TECHNICAL FIELD

The present invention relates to door lock arrangements for mounting in doors. Some embodiments of the present invention relate to electric door lock arrangements, such as solenoid lock arrangements, solenoid locks, electric locks or the like. In particular, it is herein disclosed a door lock arrangement comprising an elongated guiding element, a door lock arrangement comprising a cam pin, an auxiliary latch bolt for installation in a door lock arrangement and a bolt assembly.

BACKGROUND

Door lock arrangements have a vast range of applications, such as at hotels, hospitals, offices or the like. For these applications, for example solenoid locks are particularly popular. A common type of solenoid locks is activated, e.g. unlocked, by means of a Radio Frequency Identification (RFID) tag, a magnetic card or the like. With a solenoid lock of this type, a locking mechanism of the solenoid lock cannot be operated through actuation of a door handle unless the solenoid lock is electrically activated (Power-To-Open type locking arrangements). Some solenoid locks allow the door handle to operate the locking mechanism without power and do instead require power to deactivate the door handle, i.e. the door is locked when electrically activated (Power-To-Lock type locking arrangements). These door lock arrangements also often include a knob for manually locking and unlocking the door, where the knob is only mounted at one side of the door, or the door lock arrangement.

A general problem with known solenoid door lock arrangements is that a housing thereof comprises many different lever arms and pivoting bodies. This makes space available for electronics to control and/or monitor the solenoid door lock arrangement severely limited. In future door lock arrangements, it is expected that further electronics will be built into the housing, e.g. in order to allow for e.g. sensors to register positions of different moving internal mechanism of the solenoid arrangements.

EP1354113 discloses a solenoid arrangement for controlling handle operation in a door lock, in which force transmission from an operation axis of a handle or the like to a follower acting on a bolt of the lock is arranged by means of a movable coupling member which receives its guidance from the solenoid arrangement. The arrangement includes a shaft element which is arranged to move through a solenoid against the force of a spring and which moves a turnable lever member selecting the operating position of said coupling member. The position of the turning axis of the said lever member with regard to the coupling member is arranged to be selectively changed to provide a desired handle operation. The solenoid arrangement is further provided with a front plate through which a bolt of the lock is movable. A lock case of the solenoid arrangement is additionally provided with an operation axis, to which a follower is installed. The follower is turnably journalled to the lock case and acts on the bolt of the lock through a separate force transmission lever. A disadvantage is thus that space available for electronics is very limited.

For door lock arrangements, there exists a solution that enable a door lock arrangement to be adapted such that the door, in which the door lock arrangement is installed, can be opened from either side of the two sides of the door, such as the inside or the outside of the door, merely by operating the handle, e.g. without using any existing electronic locking functionality.

For example, EP0620341 discloses a device for adapting a panic-safe lock to the opening direction of a door, for pre-setting the lock to open only from one side and for temporarily allowing to open it from the opposite side, comprising a pair of annular elements rotatably supportable in the lock and having coaxial polygonal seats for the side-fitting engagement of a respective handle, and threaded coaxial holes parallel to the axis of the seats, the annular elements being able to rotate in contrast with elastic means from a fixed abutment position, a lever which is pivoted between the annular elements coaxially thereto and has a slot that can be aligned with the threaded holes and in which a screw is inserted, the screw being screwed into one of the threaded holes and having such a length as to rotationally couple the lever and the annular element in which the screw has been screwed, the other annular element being free, the lever having a first arm for the actuation of the spring latch, a second arm for the simultaneous actuation of the bolt, and a pawl actuatable by means of the tumbler of a key-operated device and suitable to engage teeth of the annular elements to provide a rotational coupling between the lever and the annular elements. A disadvantage with this solution may be that there is a risk of losing the screw and that it, at times, may be time consuming and/or cumbersome to move the screw from one hole to another.

Furthermore, it is common to provide the door lock arrangement with a so called auxiliary latch bolt. When a door, in which such door lock arrangement is installed, is closed, the auxiliary latch bolt is forced into the door lock arrangement. This causes a locking bolt, such as a dead bolt or a latch bolt, to be secured in its extracted position, i.e. it is prevented that the locking bolt is pushed into the door lock arrangement. In the extracted position, the locking bolt projects through and away from a faceplate of the door lock arrangement. In this manner, an attempt to tamper with the locking bolt, e.g. by inserting a screw driver in a slit between the door and the door frame in order to push the locking bolt into the door lock arrangement to thereby be able to open the door, may be prevented.

A known auxiliary latch bolt comprises a main body adapted to guide two tiltable barring bodies such that the auxiliary latch bolt moves away from and into the door lock arrangement when a tip of any one of the barring bodies is caused to tilt, e.g. due to closing of a door in which the present door lock arrangement may be installed. Thanks to that the known auxiliary latch bolt comprises two tiltable barring bodies, the door lock arrangement may be installed in a door with the hinges to the right or left as seen by an observer towards which the door opens. A disadvantage is that, once the door has been installed, only one of the tiltable barring bodies will be in active use when the door closes. A further disadvantage with this auxiliary latch bolt is that it is somewhat complex to manufacture.

Another known auxiliary latch bolt has only one barring body. The barring body is rigidly mounted on a transversally movable main body. The barring body is typically mounted with a screw such that the barring body may be released and installed again, whereby the auxiliary latch bolt is adapted to left or right hinged doors. A few barring bodies are adapted to handle both left and right hinged doors. A disadvantage with these known auxiliary latch bolts may be that friction between a strike plate of a door frame, enclosing a door lock arrangement provided with these known auxiliary latch bolts, and the rigidly mounted barring body may cause unnecessary wear and possibly also undesired sounds when the door is closed.

Moreover, a known door lock arrangement typically has a dead bolt or the like for locking of the door in which the door lock arrangement is mounted. A position, along a longitudinal direction of a faceplate of the door lock arrangement, of the dead bolt is usually called "classic" or "modern" positioning. This means that a door with a door lock arrangement with "classic" positioning of the dead bolt should not be installed in a door frame adapted for a door lock arrangement with

"modern" positioning of the dead bolt. Since if the door would be installed in that door frame the deadbolt would not coincide with a corresponding cavity that is adapted to receive the deadbolt. In some cases, the door frame may be adapted, but in some other cases it may not be desired to adapt the door frame, e.g. due to fire safety and/or security reasons. For lock manufacturers, this implies that door lock arrangements need to be provided in different versions, one for "classic" positioning and another for "modern" positioning. A disadvantage is that maintaining different versions adds costs. A further disadvantage may be that door lock arrangements in stock may not always fit desired need in terms of "classic" or "modern" positioning. Sometimes, the term "connect" is also used to refer to the same position as "modern". SUMMARY

In view of the above, an object may be to alleviate or at least reduce one or more of the abovementioned disadvantages and/or problems.

This object, and other objects, may be achieved by the independent claims appended herewith.

According to an aspect, there is thus provided a door lock arrangement for mounting in a door leaf.

The door lock arrangement comprises a faceplate mountable in the door leaf, and a mounting plate adapted to be received by the door leaf, wherein the faceplate and the mounting plate forms a casing.

The casing comprises a rotatable gear arm adapted to translationally displace a latch bolt by rotation about a rotational axis perpendicular to the mounting plate, a lock hub adapted to receive a lock actuator spindle for manoeuvring the latch bolt, a hub arrangement adapted to allow the latch bolt to be controlled by actuation of a lever handle spindle, and an elongated guiding element that is displaceable between a first position and a second position by translation thereof in a longitudinal direction of the elongated guiding element.

The elongated guiding element is spring biased towards the first position in which the latch bolt protrudes out of the faceplate by that the latch bolt is spring biased. Additionally, the elongated guiding element, when located in the second position, is arranged to retract the latch bolt, and the elongated guiding element comprises a lock actuation element at a first end thereof in proximity of the lock hub. The lock actuation element is further arranged to convert rotation of the lock hub to a translational movement of the elongated guiding element from the first position.

Moreover, the elongated guiding element comprises a bolt displacing element at a middle portion thereof in proximity of the rotational axis of the gear arm, wherein the bolt displacing element is arranged to convert the translational movement of the elongated guiding element to a rotation of the gear arm. The elongated guiding element also comprises a lever actuation element at a second end thereof in proximity of the hub arrangement, wherein the lever actuation element is arranged to convert rotation of the hub arrangement to the translational movement of the elongated guiding element.

The elongated guiding element is displaceable along an interior face of the casing in accordance with the translational movement and the interior face is opposite to the faceplate of the door lock arrangement.

Thanks to that the elongated guiding element is adapted to be transversally movable along the interior face of the casing, space inside the casing is made available for use by electronics, such as a printed circuit board. Moreover, the elongated guiding element enables, at its second end, the hub arrangement to interact directly with the elongated guiding element. Furthermore, the elongated guiding element interacts, at the middle portion thereof, indirectly with the bolt, via the gear arm. In this manner, the transversal movement of the elongated guiding element along the interior face is translated to a transversal movement of the bolt along in parallel with a geometrical axis that is perpendicular to a main plane of a faceplate of the door lock arrangement. Space requiring pivotal or tilting movements, usually occurring at levers or arms connected to the hub arrangement, are in this fashion effectively avoided, or at least movement of e.g. the elongated guiding element is made much less space requiring. Consequently, the door lock arrangement exposes a relatively large free space that may accommodate electronics. As a result, at least one of the aforementioned objects is achieved by the door lock arrangement, having the elongated guiding element that is transversally movable along the interior face of the casing between the first and second positions.

According to another aspect, there is provided a door lock arrangement for installation in a door leaf. The door lock arrangement comprises a mounting plate adapted to be received by the door leaf.

The mounting plate supports a hub arrangement adapted to selectably control whether a bolt is retracted or not upon on actuation of at least one of a first lever handle and a second lever handle, mountable at a first side of the door leaf and a second side of the door leaf, respectively.

The hub arrangement comprises:

a first rower, wherein the second engaging arm is biased to disengage the second distal end from the second rower adapted to receive a first lever handle spindle, connectable to the first lever handle, from the first side of the door leaf,

a second rower adapted to receive a second lever handle spindle, connectable to the second lever handle, from the second side of the door leaf, and

a lever hub adapted to at least partially enclose and receive the first and second rowers.

The hub arrangement further comprises a first engaging arm and a second engaging arm.

The first engaging arm has a first proximal end and a first distal end, wherein the first engaging arm is biased to keep the first distal end spaced apart from the first rower, wherein the first proximal end is rotatably mounted at a first face of the lever hub, wherein the first face faces the first side of the door leaf, wherein the first distal end and the first rower are adapted to cause, when abutting against each other, the lever hub to rotate when the first rower is rotated while allowing the lever hub to rotate while not causing the first rower to rotate. The second engaging arm has a second proximal end and a second distal end, wherein the second engaging arm is biased to keep the second distal end spaced apart from the second rower, wherein the second proximal end is rotatably mounted at a second face of the lever hub, wherein the second face faces the second side of the door leaf, wherein the second distal end and the second rower are adapted to cause, when abutting against each other, the lever hub to rotate when the second rower is rotated while allowing the lever hub to rotate while not causing the second rower to rotate.

The lever hub comprises a through hole in which a cam pin is rotatably installed. The cam pin is rotatable about a longitudinal axis thereof between at least a first rotational position and a second rotational position, wherein the cam pin has a first end in the vicinity of the first engaging arm and a second end in the vicinity of the second engaging arm, wherein the first end comprises a first forcing surface and a first allowing surface, wherein the second end comprises a second forcing surface and a second allowing surface.

When the cam pin is in the first rotational position, the first forcing surface is adapted to abut against the first proximal end to force the first distal end, against bias of the first engaging arm, to abut against the first rower. Moreover, when the cam pin is in the first rotational position, the second allowing surface is adapted to allow the second distal end to be spaced apart from the second rower according to bias of the second engaging arm.

When the cam pin is in the second rotational position, the first allowing surface is adapted to allow the first distal end to be spaced apart from the first rower according to bias of the first engaging arm. Furthermore, when the cam pin is in the second rotational position, the second forcing surface is adapted to abut against the second proximal end to force the second distal end, against bias of the second engaging arm, to abut against the second rower.

In this manner, the door lock arrangement is easily adapted to allow the door leaf to be opened from any one side of the door leaf. According to further embodiments disclosed herein, the door lock arrangement is further easily adapted to allow the door leaf to be opened, by turning of a lever handle, from both sides of the door leaf, and/or from none of the sides of the door leaf. As a result, at least one of the aforementioned objects is achieved by the door lock arrangement, comprising a turnable cam pin, having at least a first rotational position and a second rotational position, wherein the first rotational position allows the door leaf to be opened by the first lever handle and/or the second rotational position allows the door leaf to be opened by the second lever handle.

According to a further aspect, there is hence provided an auxiliary latch bolt for installation in a door lock arrangement, wherein the auxiliary latch bolt, when mounted in the door lock arrangement, is displaceable between a locking position and an unlocking position by translation thereof in parallel with a geometrical axis that is perpendicular to a main plane of a faceplate of the door lock arrangement.

Furthermore, the auxiliary latch bolt comprises a guiding unit adapted to guide the auxiliary latch bolt when being displaced between the locking position and the unlocking position,

The guiding unit is adapted to allow a bolt of the door lock arrangement to be locked in a projecting position, in which the bolt projects through the faceplate, when the auxiliary latch bolt is located in the locking position. The guiding unit is also adapted to allow the bolt to be retracted at least partly into an interior of the door lock arrangement, when the auxiliary latch bolt is located in the unlocking position.

The auxiliary latch bolt, when mounted in the door lock arrangement, projects less, or not at all, through the faceplate in the locking position than in the unlocking position. The auxiliary latch bolt, when mounted in the door lock arrangement, is spring biased towards the unlocking position.

The auxiliary latch bolt comprises an actuation unit comprising a wedge-shaped portion, having two side surfaces meeting at a tip of the wedge-shaped portion.

The guiding unit is adapted to guide the actuation unit when the tip is caused to move away from a secondary plane that is perpendicular to the main plane of the faceplate and parallel with a longitudinal axis of the faceplate, wherein the tip is located in the secondary plane when the auxiliary latch bolt is in the unlocking position.

The actuation unit comprises a base portion having at least two supporting surfaces arranged to abut against the faceplate when the auxiliary latch bolt is located in the unlocking position. The base portion has a rounded face adapted to the guiding unit.

The guiding unit is adapted to allow the rounded face of the actuation unit to abut against the guiding unit. The rounded face is further adapted to guide the actuation unit when the tip is caused to move away from the secondary plane, and the auxiliary latch bolt is composed of only one actuation unit.

Thanks to that the auxiliary latch bolt is composed of only one actuation unit that abuts against the rounded face, the auxiliary latch bolt is easy to manufacture. A reason for this is that the auxiliary latch bolt includes few parts that have rigid shapes in that the parts includes no complex projecting parts or otherwise convoluted shapes.

According a still further aspect, there is hence provided a bolt assembly adapted to attach a bolt of a door lock arrangement, the bolt being extractable and retractable relatively a faceplate of the door lock arrangement. The bolt assembly comprises a bolt guiding member, having a first attachment portion for releasable attachment of the bolt to the bolt guiding member and being arranged to translationally guide the bolt along a geometrical axis that is perpendicular to a main plane of the faceplate for extraction and retraction of the bolt relatively the faceplate, when the bolt guiding member is mounted in the door lock arrangement. The bolt guiding member has a second attachment portion for releasable attachment of the bolt to the bolt guiding member. The second attachment portion is offset the first attachment portion along, such as parallelly with, a longitudinal axis of the faceplate when the bolt guiding member is mounted in the door lock arrangement.

In this manner, the bolt assembly enables a change or a swap of a position of the bolt in that the position of the bolt may for example be chosen according to the "classic" or "modern" positioning by attaching the bolt in the first or second attachment portion, respectively. Accordingly, a length of the offset between the first and second attachment portions may typically be defined by a difference in position of the bolt according to "classic" and "modern", respectively.

Thanks to the second attachment portion, the bolt assembly enables adaption to "classic" or "modern" positioning in an easy manner which requires few, or no, parts that are specifically provided for only one of the "classic" and "modern" positioning.

In some embodiments, the bolt assembly comprises the faceplate and a cover plate. The faceplate has a recess adapted to accommodate the cover plate. The recess may typically face away from an interior of a door lock assembly together with which the bolt assembly is used, e.g.

mounted. The cover plate is releasably mountable at the faceplate. The cover plate comprises an opening, which is adapted to allow the extraction and the retraction of the bolt when the bolt is attached to the first attachment portion and when the cover plate is mounted at the faceplate, and wherein the cover plate is adapted to cover the second attachment portion when the cover plate is mounted at the faceplate. For example, a shape of the opening in the cover plate is derived from a contour of the bolt, wherein the contour is seen in a cross-section that is parallel with the faceplate when the cover plate is mounted at the faceplate. Further, a position of the opening in the cover plate may also be located oppositely to the first attachment portion when the cover plate is mounted at the faceplate.

Thanks to the cover plate, the second attachment portion is protected. An advantage may be that manipulation of the lock with a tool, such as a picklock or the like, may be hindered, or obstructed.

In some embodiments, the cover plate is reversibly mountable at the faceplate. The opening is offset along the longitudinal axis of the faceplate relatively a center in a longitudinal direction of the cover plate when the cover plate is mounted at the faceplate. A length of the offset is adapted to allow the bolt to be alternatingly mounted at the first and second attachment portions upon reversed re-mounting of the cover plate.

As an example, the cover plate may thus be mountable in the faceplate in a first mode and a second mode. The first mode may yield a first opening position of the opening. The first opening position is located at a distance from the center, still along the longitudinal axis of the faceplate, thus also in a longitudinal direction of the cover plate. The second mode may yield a second opening position of the opening. The second opening position is located at the distance, i.e. the same distance, from the center, again still along the longitudinal axis of the faceplate, thus again also in the longitudinal direction of the cover plate. The cover plate may thus be reversibly mountable to assume the first mode or the second mode.

As a further example, the recess may snugly fit to a shape of the cover plate, whereby the center of the cover plate is at a center position, e.g. one and the same position. The center position of the center is thus assumed both when the cover plate is mounted in the first mode and when the cover plate is mounted in the second mode.

In this manner, the cover plate, i.e. one and the same cover plate, may be reversely mounted to adapt to door frames configured for "modern" or "classic" positioning of the bolt. An advantage is, hence, that the same cover plate may be used for both "modern" and "classic" positioning of the bolt. A further advantage may be that there is to bring special parts in order to be able to change the bolt position from "modern" to "classic" or the other way around. As a consequence, there is no requirement of being able to foresee the change of the bolt position, e.g. before arriving at a site of installation and/or leaving a supply of door lock parts.

In some embodiments, the faceplate is arranged to allow mounting of the cover plate at a first location and a second location. The first location is offset the second location along the longitudinal axis of the faceplate.

As an example, the recess is shaped to accommodate the cover plate both when the cover plate is mounted at the first location, e.g. within the recess, and when the cover plate is mounted at the second location, e.g. within the recess.

In some embodiments, the cover plate is non-reversibly mountable at the faceplate. The opening is offset along the longitudinal axis of the faceplate relatively an end of the faceplate. A length of the offset is adapted to allow the bolt to be mounted at the first or second attachment portions.

As an example, the cover plate may be provided as a first cover plate or a second cover plate. With the first cover plate, the length of the offset may be adapted to allow the bolt to be mounted at the first attachment portion. In more detail, the opening of the first cover plate may be positioned in line with the first attachment portion when seen along the geometrical axis, e.g. through a center of the opening of the first cover plate. With the second cover plate, the length of the offset may be adapted to allow the bolt to be mounted at the second attachment portion. In more detail, the opening of the second cover plate may be positioned in line with the second attachment portion when seen along the geometrical axis, e.g. through a center of the opening of the second cover plate. The first cover plate is thus different from the second cover plate. This means that the cover plate is provided in two different versions, one for "classic" positioning and one for "modern" positioning.

In a further example, according to the same basic principle as directly above, there may be provided a first face plate and a second face plate, each having a respective opening, whose location along the longitudinal axis of the faceplate corresponds to, or matches with, the first or second attachment portion. The first face plate is different from the second face plate. This means that the face plate is provided in two different versions, one for "classic" positioning and one for "modern" positioning.

In some embodiments, the bolt assembly further comprises an attachment portion cover adapted to be releasably mountable at the first and second attachment portion alternatingly. As an example, the attachment portion cover may be alternatingly mounted, such as releasably mounted, in the first or second attachment portion. The attachment portion cover is further adapted to present a flat surface facing away from the bolt guiding member when mounted in the first or second attachment portion.

The flat surface may be aligned with the faceplate when the bolt is in an extracted position. Alternatively, with embodiments including the cover plate, the flat surface may be aligned with a bolt guiding member surface of the bolt guiding member. The bolt guiding member surface faces the face plate when the bolt assembly is used, or mounted, together with a door lock arrangement.

An advantage may be that the attachment portion cover protects the one of the first and second attachment portions that the bolt is not mounted in. The attachment portion cover protects said the one of the first and second attachment portions from being contaminated, e.g. with dust, dirt or the like, and/or from being manipulated by a tool as mentioned above.

According to a still other aspect, the object may be achieved by a door lock arrangement for mounting in a door leaf. The door lock arrangement comprises a bolt assembly according to any one of the embodiments and/or examples disclosed herein.

BRIEF DESCRIPTION OF THE DRAWINGS

The various aspects of embodiments disclosed herein, including particular features and advantages thereof, are explained in the following detailed description and the accompanying drawings. The drawings are not to scale and any measures indicated are merely provided as examples for ease of understanding.

Figure 1 is an overview illustrating a door in which an exemplifying door lock arrangement is installed.

Figure 2 is a side view illustrating the door lock arrangement with connecting lever spindles and lever handles.

Figure 3 includes three views illustrating the exemplifying door lock arrangement.

Figure 4 includes views illustrating features relating to the elongated guiding element.

Figure 5 illustrates an exemplifying gear arm according to some examples herein.

Figure 6 illustrates an exemplifying lock hub according to some examples herein.

Figure 7 is a cross-sectional view illustrating a printed circuit board mounted in the exemplifying door lock arrangement.

Figure 8 shows plan views illustrating difference between a known printed circuit board and an exemplifying printed circuit board to be used with at least some embodiments herein.

Figure 9 includes views illustrating an exemplifying hub arrangement according to some examples herein.

Figure 10 includes views illustrating an exemplifying cam pin.

Figure 11 shows a set of views illustrating locking and unlocking positions of an auxiliary latch bolt as well as an exploded view of some parts relating to the auxiliary latch bolt.

Figure 12 illustrates an exemplifying actuation unit of the auxiliary latch bolt.

Figure 13 is a perspective view illustrating an exemplifying locking member that is adapted to cooperate with the auxiliary latch bolt to achieve locking and unlocking of an exemplifying bolt.

Figure 14a and Figure 14b are perspective views illustrating an exemplifying bolt assembly when mounted in a door lock arrangement.

Figure 15a through Figure 15c are perspective views illustrating parts of an exemplifying bolt assembly.

Figure 16 is an exploded perspective view illustrating parts of an exemplifying bolt assembly relatively a door lock arrangement in which the exemplifying bolt assembly is mountable.

Figure 17a through Figure 17e include side views, perspective view and cross-sectional views of an exemplifying bolt assembly.

Figure 18a and Figure 18b are plan views illustrating an exemplifying bolt assembly.

Figure 19a and Figure 19b are plan views illustrating another exemplifying bolt assembly.

Figure 20a and Figure 20b are perspective views illustrating details of a still further exemplifying bolt assembly. DETAILED DESCRIPTION

Figure 1 illustrates a door lock arrangement 1 when installed, or mounted, in a door leaf 2, or door for short.

To the left in Figure 1, illustrating a plan view of the door leaf 2, it is shown that the door lock arrangement 1 comprises a first hub 4 for receiving a lock lever (not shown) and a second hub 6 for receiving a lever handle 8. The door leaf 2 is usually mounted in a door frame via hinges 9.

To the right in Figure 1, illustrating a cross-sectional view of the door leaf 2, it is shown that the door leaf 2 may be provided with one handle at each side of the door leaf 2, i.e. a first handle 8a and a second handle 8b.

Turning to Figure 2, a more detailed cross-sectional view of the door lock arrangement 1 is provided. As illustrated, the first hub 4 may be adapted to receive a lock actuator spindle 202 that may be connected to a knob 204 for manually manoeuvring the door lock arrangement. By use of the knob 204, opening and/or closing of the door may be enabled.

Additionally, the second hub 6 is adapted to receive at least one of a first lever handle spindle 206 and a second lever handle spindle 208. In turn, each of the first and second lever handle spindles 206, 208 may be connected to a respective lever handle, such as the first and second handles 8a, 8b.

Figure 3 shows, in a cross-sectional view and two different perspective views as enumerated from the left to right, an exemplifying door lock arrangement 1 according to some embodiments herein. The exemplifying door lock arrangement 1 includes all aspects disclosed herein for reasons of simplicity. It shall, however, be understood that the aspects disclosed herein may be implemented separately. Accordingly, there may be provided other door lock arrangements that include any one or more of the aspects of the present invention.

Generally, with reference to the cross-sectional view of Figure 3, the door lock arrangement 1 for mounting in the door leaf 2 comprises a faceplate 10 mountable in the door leaf 2, and a mounting plate 12 adapted to be received by the door leaf 2. The faceplate 10 comprises a first opening 52 adapted to receive an auxiliary latch bolt and a second opening 54 adapted to receive a bolt 18. The faceplate 10 and the mounting plate 12 forms a casing 14.

The casing 14 comprises a rotatable gear arm 16 adapted to translationally displace the bolt 18 by rotation about a rotational axis 20 perpendicular to the mounting plate 12. The bolt 18 may be a latch bolt, a dead bolt or the like depending on realization of the door lock arrangement 1. It is well known that some door lock arrangements include one or more bolts selected from a group comprising at least a latch bolt, a dead bolt and the like.

Moreover, the casing 14 comprises a lock hub 22 adapted to receive a lock actuator spindle 202 for manoeuvring the bolt 18. The lock hub 22 may typically connect to a knob for manually displacing the bolt 18, whereby opening of the door is possible in case being closed in the first place.

The casing 14 further comprises a hub arrangement 24 adapted to allow the bolt 18 to be controlled by actuation of a lever handle spindle, such as the first and second lever handle spindles 206, 208 as shown in Figure 2. The lever handle spindle may have a square cross-section. Therefore, the hub arrangement 24 may be a square hub arrangement.

The hub arrangement 24 may comprise a rower 25 adapted to receive the lever handle spindle, and a lever hub 29 adapted to at least partially enclose and receive the rower 25. In order to cooperate well with the hub arrangement 24 the rower may comprise a square-shaped cavity for receiving the lever handle spindle.

In one exemplifying embodiment of the door lock arrangement 1 of Figure 3, the casing 14 further comprises an elongated guiding element 26 that is displaceable between a first position 401 and a second position 402 by translation thereof in a longitudinal direction 406 of the elongated guiding element 26 as illustrated in Figure 4.

The elongated guiding element 26 is spring biased towards the first position 401 in which the bolt 18 protrudes out of the faceplate 10 by that the bolt 18 is spring biased. In Figure 4, spring biasing towards the first position is achieved by a spring 405.

The elongated guiding element 26 is arranged to retract the bolt 18, when the elongated guiding element 26 is located in the second position 402.

Moreover, the elongated guiding element 26 comprises a lock actuation element 28 at a first end 411 thereof in proximity of the lock hub 22. The lock actuation element 28 is arranged to convert rotation of the lock hub 22 to a translational movement of the elongated guiding element 26 from the first position 401, e.g. in a direction away from the first position. Preferably, a one-way conversion of the rotation of the loch hub 22 to translational movement of the elongated guiding element 26 is provided. In this manner, the lock hub 22 is not necessarily rotated when the elongated guiding element 26 is displaced from the first position 401 to the second position 402.

The elongated guiding element 26 comprises a bolt displacing element 30 at a middle portion 413 thereof in proximity of the rotational axis 20 of the gear arm 16, wherein the bolt displacing element 30 is arranged to convert the translational movement of the elongated guiding element 26 to a rotation of the gear arm 16.

The elongated guiding element 26 comprises a lever actuation element 32 at a second end 412 thereof in proximity of the hub arrangement 24, wherein the lever actuation element 32 is arranged to convert rotation of the hub arrangement 24 to the translational movement of the elongated guiding element 26.

The elongated guiding element 26 is displaceable along an interior face 34 of the casing 14 in accordance with the translational movement, wherein the interior face 34 is opposite to the faceplate 10 of the door lock arrangement 1. The interior face 34 may be parallel with the faceplate 10.

It may be noted that the elongated guiding element 26 may abut directly to the lock hub 22 at the first end 411 of the elongated guiding element 26, abut directly to the hub arrangement 24 at the second end 412 of the elongated guiding element 26 and abut directly to the gear arm 16 at the middle portion 413 of the elongated guiding element 26 between the first and second ends 411, 412. Typically, the gear arm 16 is adapted to displace the bolt 18 when rotated by translation of the elongated guiding element 26.

The elongated guiding element 26 may further be operable by means of actuation of the lever handle spindle 206, 208 and the lock actuator spindle 202 to be displaced between the first and second positions 401, 402. Hence, in this manner, the elongated guiding element may be displaced between the first and second positions 401, 402 according to operation be e.g. a user, a human, a person or any one attempting to open and/or close the door.

The lock actuation element 28 may comprise a fork 420 adapted to be received by at least one groove 850 of the lock hub 22 to convert the rotation of the lock hub 22 to the translational movement of the elongated guiding element 26. In this manner, the rotation of the lock hub 22 is efficiently converted to the translational movement of the elongated guiding element 26 while requiring a very limited amount of space in the casing 14. For example, the rotation of the lock hub 22 does not cause arms or levers to rotate, which normally would require relatively large amounts of space within the casing 14. The fork 420 together with said at least one groove 850 of the lock hub 22 forms an exemplifying mechanism to achieve the abovementioned one-way conversion.

The bolt displacing element 30 may comprise a projecting part 31 adapted to convert the rotation of the hub arrangement 24 to the translational movement of the elongated guiding element 26 to cause the bolt 18 to be retracted.

The lever actuation element 32 may comprise a first set of gear teeth 430 adapted to be received by a second set of gear teeth 910 of the lever hub 29, as shown in more detail in Figure 9, to convert the rotation of the lever hub 29 to the translational movement of the elongated guiding element 26. In this manner, clockwise or counter-clockwise rotation of the lever hub 29 may be transferred to the translation of the elongated guiding element 26, while only requiring the lever hub 29 and the elongated guiding element 26 to connect, or abut, with each other at one small section, e.g. 90 degrees or less, of an imaginary circle that is concentric with a rotational axis of the lever hub 29.

As described above, this means that the elongated guiding element 26 is arranged to be displaceable without rotation (from a first position 401) to a second position 402, in which the bolt 18 is retracted.

Again, the elongated guiding element 26 is arranged to be biased towards the first position 401 in which the lock hub 22 is in a first rotational hub position. When the lock hub 22 is rotated, e.g. by means of a knob, the lock hub 22 leaves the first rotational hub position, counter-clockwise or clockwise, while the elongated guiding element 26 at the same time is forced to leave its first biased position 401.

The lock hub 22 is connected to the guiding element 26 to provide a one-way conversion of spindle rotation to translational movement of the elongated guiding element, e.g. thanks to the aforementioned fork as an exemplifying realization.

Figure 5 illustrates the gear arm 16 according to an exemplifying realization. A lever portion 550 of the gear arm 16 is spaced away from the mounting plate in order to allow the printed circuit board to fit under the lever portion 550. The gear arm 16 comprises a projection 552 projecting from a cylindrical housing 554 enclosing the rotational axis 20 (shown in Figure 3) of the gear arm 16.

At a distal portion 556 of the gear arm 16, a preventing surface 558 is adapted to prevent that the bolt is locked in the extracted position when the elongated guiding element 26 is displaced towards its second position 402.

Figure 6 illustrates the lock hub 22 according to an exemplifying realization. In this example, the groove 850 extends along somewhat more than half of the circumference of the lock hub 22. Notably, the lock hub 22 comprises two abutting surfaces 852, 854, which are adapted to cause the elongated guiding element 26 to be displaced from its first position 401 when desired.

Figure 7 illustrates an exemplifying printed circuit board 752 which takes advantage of the space made available, amongst others thanks to the elongated guiding element 26. Other shapes of the exemplifying printed circuit board may be contemplated by the skilled person. Figure 8 shows two plan views, to the left one of a known printed circuit board 754 using the space available in a known door lock arrangement, and to the right the printed circuit 752 board of Figure 7.

Figure 9 illustrates in more detail an exemplifying hub arrangement 24. In this example, the hub arrangement 24 comprises a cam pin 510, which may be rotated between at least a first rotational position and a second rotational position to selectively cause either of the first or second lever handle 8a, 8b to be operational for opening of the door 2.

Flence, according to another aspect, there may be provided a door lock arrangement 1 for installation in a door leaf 2. Again, the door lock arrangement 1 comprises a mounting plate 12 adapted to be received by the door leaf 2.

The mounting plate 12 supports, or upholds, a hub arrangement 24.

The hub arrangement 24 is adapted to selectably control whether a bolt is retracted or not upon on actuation of at least one of a first lever handle 8a and a second lever handle 8b, mountable at a first side 5 of the door leaf 2 and a second side 7 of the door leaf 2, respectively.

The hub arrangement 24 further comprises a first rower 25a, wherein the second engaging arm 504 is biased to disengage the second distal end 506 from the second rower 25b adapted to receive a first lever handle spindle, connectable to the first lever handle 8a, from the first side of the door leaf 2, and a second rower 25b adapted to receive a second lever handle spindle, connectable to the second lever handle 8b, from the second side of the door leaf 2.

Moreover, the hub arrangement 24 comprises a lever hub 29 adapted to at least partially enclose and receive the first and second rowers 25a, 25b.

Firstly, the hub arrangement 24 further comprises a first engaging arm 501 having a first proximal end 502 and a first distal end 503, wherein the first engaging arm 501 is biased to keep the first distal end 503 spaced apart from the first rower 25a, wherein the first proximal end 502 is rotatably mounted at a first face of the lever hub 29, wherein the first face faces the first side of the door leaf 2, wherein the first distal end 503 and the first rower 25a are adapted to cause, when abutting against each other, the lever hub 29 to rotate when the first rower 25a is rotated while allowing the lever hub 29 to rotate while not causing the first rower 25a to rotate.

Secondly, the hub arrangement 24 further comprises a second engaging arm 504 having a second proximal end 505 and a second distal end 506, wherein the second engaging arm 504 is biased to keep the second distal end 506 spaced apart from the second rower 25b, wherein the second proximal end 505 is rotatably mounted at a second face of the lever hub 29, wherein the second face faces the second side of the door leaf 2, wherein the second distal end 506 and the second rower 25b are adapted to cause, when abutting against each other, the lever hub 29 to rotate when the second rower 25b is rotated while allowing the lever hub 29 to rotate while not causing the second rower 25b to rotate.

Returning to the cam pin 510, the lever hub 29 comprises a through hole in which the cam pin 510 is rotatably installed.

The cam pin 510 is rotatable about a longitudinal axis thereof between at least a first rotational position and a second rotational position. A difference in rotation between the first and second rotational positions may be 90 degrees, 180 degrees or another suitable value. An advantage with 90 degrees compared to 180 degrees may be that the cam pin 510 need be rotated less to change which lever handle that active, i.e. effective for causing the retraction of the bolt.

As shown in Figure 10, the cam pin 510 has a first end 602 in the vicinity of the first engaging arm 501 and a second end 610 in the vicinity of the second engaging arm 504, wherein the first end 602 comprises a first forcing surface 604 and a first allowing surface 606, wherein the second end 610 comprises a second forcing surface 612 and a second allowing surface 614.

When the cam pin 510 is in the first rotational position, the first forcing surface 604 is adapted to abut against the first proximal end 502 to force the first distal end 503, against bias of the first engaging arm 501, to abut against the first rower 25a. Moreover, when the cam pin 510 is in the first rotational position, the second allowing surface 614 is adapted to allow the second distal end 506 to be spaced apart from the second rower 25b according to bias of the second engaging arm 504.

When the cam pin 510 is in the second rotational position, the first allowing surface 606 is adapted to allow the first distal end 503 to be spaced apart from the first rower 25a according to bias of the first engaging arm 501. Furthermore, when the cam pin 510 is in the second rotational position, the second forcing surface 612 is adapted to abut against the second proximal end 505 to force the second distal end 506, against bias of the second engaging arm 504, to abut against the second rower 25b.

The mounting plate 12 may preferably comprise an opening 50 adapted to reveal a butt 620, provided at the second end 610 of the cam pin 510, that is adapted to allow the cam pin 510 to be rotated by engagement with the butt 620. In this manner, the cam pin 510 may be rotated while the hub arrangement 24 remains installed at the mounting plate 12.

In some embodiments, the door lock arrangement 1 may be an electric door lock arrangement 1. In these embodiments, the mounting plate 12 may hold an electrically activatable moving member 40 having a displaceable element 42 that is displaceable between an engaging position and a non-engaging position based on electrical activation of the electrically activatable moving member 40. The electrically activatable moving member may be a solenoid, an electric motor or the like. The displaceable element 42 ensures that both the first and second engaging arms 501, 504 are engaged with the first and second rowers 25a, 25b, respectively, when the displaceable element 42 is in the engaging position and wherein the displaceable element 42 allows both the first and second engaging arms 501, 504 to disengage with the first and second rowers 25a, 25b, respectively, when the displaceable element 42 is in the non-engaging position.

It may here be noted that according to prior art, a solenoid always activates both arms, i.e. there is no means to against the bias of the arm to force the arm to always be engaged with the respective rower, e.g. the first and/or second rower 25a, 25b. An idea of the cam pin is thus that the cam pin by rotation exposes different sides, or faces, thereof to the first and second engaging arms 501, 504 at the first and second ends 602, 610, respectively.

Therefore, the first forcing surface 604 and the second forcing surface 612 may have many different shapes that may suitably achieve that the first and/or second engaging arms 501, 504 becomes engaged against their biases. For example, the first and second forcing surfaces 604, 612 may be convex, protruding or the like. Similarly, the first and second allowing surfaces 606, 614 may have many different shapes that may suitably achieve that the first and/ second engaging arms 501, 504 are allowed to be spaced apart from its respective rower 25a, 25b. For example, the first and second allowing surfaces 606, 614 may be concave, formed as a recess or the like.

The lever hub 29 may have a throughbore that emanates from the through hole and that is perpendicular to the through hole, wherein a ball spring plunger 520 is installed in the throughbore to secure the cam pin 510. As a result, rotation of the cam pin 510 is made inert to avoid

unintentional rotation thereof.

In some embodiments, the cam pin 510 is rotatable about the longitudinal axis thereof between at least the first and second rotational positions and a third rotational position. In these embodiments, the first end 602 comprises a further first allowing surface 607, and the second end 610 comprises a further second allowing surface 615. Additionally, when the cam pin 510 is in the third rotational position, the first further allowing surface 607 is adapted to allow the first distal end 503 to be spaced apart from the first rower 25a according to bias of the first engaging arm 501. This further means that, when the cam pin 510 is in the third rotational position, both the first forcing surface 604 and the first allowing surface 606 are directed towards other direction than the first rower 25a.

When the cam pin 510 is in the third rotational position, the second further allowing surface 615 is adapted to allow the second distal end 506 to be spaced apart from the second rower 25b according to bias of the second engaging arm 504. This further means that, when the cam pin 510 is in the third rotational position, both the second forcing surface 612 and the second allowing surface 614 are directed towards other direction than the first rower 25a.

As illustrated by the dotted lines of the cross-sectional views of the first and second ends 602, 610 of the cam pin 510 in the upper portion of Figure 10, the first and the further first allowing surfaces 606, 607 and the second and the further second allowing surface 614, 614 may be different portions of a respective common surface.

According to the embodiment of Figure 10, the rotational difference between the first and second rotational positions is 180 degrees, and the third rotational position may be located between the first and second rotational positions, e.g. at 90 degrees. Other embodiments may have different values of the angle for rotational difference.

In Figure 11, a further aspect of the present invention is illustrated. Three portions of Figure 11 illustrate locking and unlocking positions of an exemplifying auxiliary latch bolt 800 for installation in a door lock arrangement, such as the one described above or similar door lock arrangement.

The auxiliary latch bolt 800, when mounted in the door lock arrangement 1, is displaceable between a locking position 704, 706 and an unlocking position 702 by translation thereof in parallel with a geometrical axis 63 that is perpendicular to a main plane 60 of a faceplate 10 of the door lock arrangement 1.

The auxiliary latch bolt 800 comprises a guiding unit 802 adapted to guide the auxiliary latch bolt 800 when being displaced between the locking position 704, 706 and the unlocking position 702.

The guiding unit 802 is adapted to allow a bolt 18 of the door lock arrangement 1 to be locked in a projecting position, in which the bolt projects through the faceplate 10, when the auxiliary latch bolt 800 is located in the locking position 704, 706. The bolt 18 is allowed to, unless locked by the auxiliary latch bolt 800, be retracted while being biased to be extracted through the faceplate 10.

The guiding unit 802 is adapted to allow the bolt to be retracted at least partly into an interior of the door lock arrangement 1, when the auxiliary latch bolt 800 is located in the unlocking position 702.

The auxiliary latch bolt 800, when mounted in the door lock arrangement 1, projects less, or not at all, through the faceplate 10 in the locking position 704, 706 than in the unlocking position

702. The auxiliary latch bolt 800, when mounted in the door lock arrangement 1, is spring biased towards the unlocking position 702.

The auxiliary latch bolt 800 comprises an actuation unit 801 comprising a wedge-shaped portion 804, having two side surfaces 806, 808 meeting at a tip 810 of the wedge-shaped portion 804.

The guiding unit 802 is adapted to guide the actuation unit 801 when the tip is caused to move away from a secondary plane 61 that is perpendicular to the main plane 60 of the faceplate 10 and parallel with a longitudinal axis 62 of the faceplate 10, wherein the tip 810 is located in the secondary plane 61 when the auxiliary latch bolt 800 is in the unlocking position 702.

The actuation unit 801 comprises a base portion 812 having at least two supporting surfaces 816, 818 arranged to abut against the faceplate 10 when the auxiliary latch bolt 800 is located in the unlocking position 702. The wedge-shaped portion 804 typically projects from and tapers in a direction away from said at least two supporting surfaces 816, 818.

The base portion 812 has a rounded face 814 adapted to the guiding unit 802. The base portion 812 may thus be formed as a cylindric segment, a box with heavily rounded corners or the like.

In particular, the guiding unit 802 is adapted to allow the rounded face 814 of the actuation unit 801 to abut against the guiding unit 802. The rounded face 814 is further adapted to guide the actuation unit 801 when the tip 810 is caused to move away from the secondary plane 61. This means that a portion of the guiding unit 802 towards the actuation unit 801 may be concave and formed as an inner surface 803 of a cylindric segment.

Furthermore, the auxiliary latch bolt 800 is composed of only one actuation unit 801. Since there is only one actuation unit 801, there is e.g. less risk of that dirt or other debris may cause the actuation unit 801 to malfunction. With two actuation units, as in the prior art, debris may get stuck between the two moving and tilting actuation units and cause malfunction of the auxiliary latch bolt 800.

The actuation unit 801 may preferably be symmetric with respect to the secondary plane 61, being centrally located with respect to the faceplate 10. In this manner, the auxiliary latch bolt 800 may be equally well adapted for a right-hand opened door or a left-hand opened door.

An angle between the secondary plane 61 and the side surfaces 806, 808 may be between 20 and 60 degrees, more preferably between 25 and 40 degrees. By adjusting the magnitude of the angle, the displacement of the auxiliary latch bolt 800 into the interior of the door lock arrangement 1. E.g. the lesser the angle, the larger the displacement into the interior of the door lock arrangement 1. The angle may also depend on a depth of the faceplate, where the depth is measured

perpendicularly to the secondary plane 61.

Figure 12 illustrates a series of views illustrating the exemplifying auxiliary latch bolt 800.

In this exemplary embodiment of the actuation unit 801, the aforementioned angle is about 28 degrees, e.g. +/- two degrees.

Said at least two supporting surfaces 816, 818 may be one and the same surface, or they may be separated by e.g. a groove 817 or other indentation. An idea of said at least two supporting surfaces 816, 818 is that the actuation unit 801 of the auxiliary latch bolt 800 is caused to rotate about one of said at least two supporting surfaces 816, 818 when being displaced in a secondary direction perpendicular to the secondary plane 61.

Figure 13 shows an exemplifying locking member 13 that is adapted to cooperate with the auxiliary latch bolt 800 to achieve locking and unlocking of an exemplifying bolt, such as the bolt 18.

The locking member 13 has a hook portion 1010 adapted to engage with the bolt, whereby the bolt is prevented from being further retracted into the casing 14. Moreover, the locking member 13 has a protruding locking support 1020 adapted to engage with the guiding unit 802 when the auxiliary latch bolt 800 is in the unlocking position 702. Furthermore, the locking member 13 is biased to rotate such that the hook portion 1010 engages with the bolt unless the locking member 13 is inhibited by e.g. the gear arm 16.

Figure 14a and Figure 14b shown an exemplifying bolt assembly when mounted in a door lock arrangement 1, e.g. a door lock arrangement 1 for mounting in a door leaf 2 as shown above.

The door lock arrangement 1 comprises a bolt assembly according to any one of the exemplifying embodiments illustrated herein with reference to Figure 14 through Figure 20.

The bolt assembly 1500, shown in more detailed with reference to Figure 15 below, is adapted to attach a bolt 18 of the door lock arrangement 1. Figure 14a illustrates when the bolt assembly 1500 is mounted in the door lock arrangement 1 and when the bolt assembly 1500 is adapted to "modern" positioning of the bolt 18. Oppositely, Figure 14b illustrates when the bolt assembly 1500 is mounted in the door lock arrangement 1 and when the bolt assembly 1500 is adapted to "classic" positioning of the bolt 18. "modern" positioning may be referred to as a first configuration of the position of the bolt 18, e.g. along the longitudinal direction of the face place when mounted in the door lock arrangement 1. Further, "classic" positioning may be referred to as a second configuration of the position of the bolt 18, , e.g. along the longitudinal direction of the face place when mounted in the door lock arrangement 1. Generally, the bolt 18 is extractable and retractable relatively a faceplate 10 of the door lock arrangement 1, i.e. when the bolt assembly 1500 is mounted in the door lock arrangement 1. When the door lock assembly 1 is mounted in a door, which is mounted in a suitable door frame, retraction, e.g. complete or almost complete retraction, of the bolt 18 allows the door to freely swing in and out of the door frame, e.g. without being obstructed by the bolt 18. Further, extraction, e.g. complete or almost complete extraction, of the bolt 18 secures the door in the door frame by means of the bolt 18. This means that it is not possible to open the door without operating a handle of the door, or a key for the door lock arrangement 1.

Furthermore, the bolt assembly 1500 comprises a bolt guiding member 1509, having a first attachment portion 1502 for releasable attachment of the bolt 18 to the bolt guiding member 1509 and being arranged to translationally guide the bolt 18 along a geometrical axis 63 that is perpendicular to a main plane 60 of the faceplate 10 for extraction and retraction of the bolt 18 relatively the faceplate 10, when the bolt guiding member 1509 is mounted in the door lock arrangement 1. The first attachment portion 1502 may thus enable adaption of the bolt assembly to "classic" positioning.

Moreover, the bolt guiding member 1509 has a second attachment portion 1504 for releasable attachment of the bolt 18 to the bolt guiding member 1509. The second attachment portion 1504 is offset the first attachment portion 1502 along a longitudinal axis 62 of the faceplate 10 when the bolt guiding member 1509 is mounted in the door lock arrangement 1. The second attachment portion 1504 may thus enable adaption of the bolt assembly to "modern" positioning.

Releasable attachment of the bolt 18 may refer to that the bolt may be inserted into the attachment portion and temporarily fastened therein and to that the bolt may, e.g. at a later point in time, be released from the attachment portion, e.g. to be moved to the other attachment portion or replaced with a further bolt, which may be different (for left/right hinged door) alternatively the same or similar as the released bolt.

In this manner, the bolt assembly enables a change or a swap of a position of the bolt in that the position of the bolt may for example be chosen according to the "classic" or "modern" positioning by attaching the bolt in the first or second attachment portion, respectively. The bolt 18 may be released and fastened by proper screwing at screws 1702, 1704 (see Figure 17c) which are accessible, since the casing of the door lock arrangement 1 comprises suitable openings 1420, 1422. The screws may not need to be completely unscrewed to release the bolt 18.

Additionally, the bolt guiding member 1509 may guide the bolt 18 between an extracted position and a retracted position, wherein the bolt 18 protrudes out of the faceplate 10 in the extracted position, and wherein the bolt 18 is retracted towards an interior of the casing 14 in the retracted position.

According to some embodiments, the bolt assembly 1500 comprises the faceplate 10 and a cover plate 1506. The cover plate 1506 and/or the faceplate 10 may be realized in according to different examples, some of which being illustrated herein.

In these examples, the faceplate 10 has a recess 1508 that is adapted to accommodate the cover plate 1506. The cover plate 1506 is releasably mountable at the faceplate 10. The cover plate 1506 comprises an opening 1507, which is adapted to allow the extraction and the retraction of the bolt 18 when the bolt 18 is attached to the first attachment portion 1502 and when the cover plate

1506 is mounted at the faceplate 10. The cover plate 1506 is adapted to cover the second attachment portion 1504 when the cover plate 1506 is mounted at the faceplate 10.

In one example of the cover plate 1506 and/or the faceplate 10 is illustrated in Figure 15a through Figure 15c. In this example, which is also illustrated in Figure 14a and Figure 14b, one and the same cover plate 1506 may be used for both "classic" and "modern" positioning depending on how the cover plate 1506 is mounted, i.e. in terms of orientation. E.g. when the cover plate 1506 is mounted with a first end 1401 towards a first end 1411 of the face plate, it may be that the bolt assembly is adapted to "modern" positioning. Similarly, e.g. when the cover plate 1506 is mounted with a second end 1402 towards the first end 1411 of the face plate, it may be that the bolt assembly is adapted to "classic" positioning. The first and second ends 1401, 1402 of the cover plate 1506 are located in opposite ends of the cover plate, e.g. relatively a longitudinal direction 1505 thereof.

Furthermore, the cover plate 1506 is reversibly mountable at the faceplate 10. The opening

1507 is offset along the longitudinal axis 62 of the faceplate relatively a center 1501 in the longitudinal direction 1505 of the cover plate 1506 when the cover plate 1506 is mounted at the faceplate 10. The center is thus located at a middle point of the cover plate 1506 when considering distance to distal ends in the longitudinal direction 1505 of the cover plate 1506. A length of the offset is adapted to allow the bolt 18 to be alternatingly mounted at the first and second attachment portions 1502, 1504 upon reversed re-mounting of the cover plate 1506.

"Reversibly mountable" may refer to that the orientation of the cover plate 1506 may be switched, such as swapped, changed or the like. As described above, the cover plate 1506 may be oriented in two different ways, one for "classic" positioning and one for "modern" positioning.

As an example, the cover plate may thus be mountable in the faceplate 10 in a first mode and a second mode as illustrated in Figure 14a and Figure 14b, respectively.

The first mode may yield a first opening position of the opening 1507. The first opening position is located at a distance from the center 1501, still along the longitudinal axis of the faceplate, thus also in the longitudinal direction 1505 of the cover plate 1506. The second mode may yield a second opening position of the opening 1507. The second opening position is located at the distance, i.e. the same distance, from the center 1501, again still along the longitudinal axis of the faceplate, thus again also in the longitudinal direction of the cover plate 1506. The cover plate 1506 may thus be reversibly mountable to assume the first mode or the second mode, e.g. to switch from the first mode to the second mode or to switch from the second mode to the first mode.

Furthermore, Figure 15c illustrates the first attachment portion 1502 and the second attachment portion 1504. One or more of the first and second attachment portions 1502, 1504 may be a hole, a cavity, a socket, an outlet or the like. Typically, one or more of the first and second attachment portions 1502, 1504 have a bottom, but through-hole or the like is also conceivable depending on use case. A cross-section of the first and/or second attachment portions 1502, 1504, taken perpendicularly to a longitudinal direction thereof, may be circular, rectangular, square, triangular, polygonal or the like. Inner walls of the first and second attachment portions 1502, 1504 are typically smooth, such as even, flat or the like. In some examples, the inner walls may be threaded. In general, the first and second attachment portions 1502, 1504 may be adapted to, or configured to, receive the bolt 18, in particular the portion 1710, such as a protrusion, of the bolt 18 as shown in Figure 17d.

The recess 1508, shown in Figure 15b, may be adapted to snugly fit, such as formfit with or the like, a shape of the cover plate 1506. As an example, the recess 1508 has a geometric shape that is defined by the cover plate 1506.

As shown in Figure 15a to Figure 15c, the bolt assembly 1500 comprises the bolt guiding member 1509. In some examples, the bolt assembly 1500 further comprises an embodiment of the faceplate 10 and an embodiment of the cover plate 1506. Accordingly, the faceplate 10 and the cover plate 1506 are.

Figure 16 illustrates an exemplifying bolt assembly 1500 relatively a door lock arrangement 1 in which the exemplifying bolt assembly 1500 is mountable. In this Figure, two screw holes 1601, 1602 and corresponding screw 1603, 1604 for mounting of the cover plate 1506 at the faceplate 10 are shown.

Figure 17a through Figure 17e include side views and a cross-sectional view of an exemplifying bolt assembly.

Figure 17a shows the first and second attachment portions 1502, 1504 inside the guiding member 1509. Moreover, the bolt 18 is shown as mounted for "modern" positioning, i.e. mounted in the second attachment portion 1504.

Figure 17b shows that the first attachment portion 1502 may be vacant, in case the bolt 18 is mounted in the second attachment portion 1504.

Figure 17c illustrates two screws 1702, 1704 for securing the bolt 18. Normally, only one screw is needed, since said only one screw may be used in either of two screw holes, illustrated in more detail with reference to Figure 17e, in one or the other of the first and second attachment portions 1502, 1504. In this example, the bolt 18 is mounted at the second attachment portion 1504 by means of the screw 1704.

Figure 17d illustrates a top view of the bolt guiding member 1509 and the bolt 18. A cross- sectional view across a plane A is illustrated in Figure 17e. In Figure 173, it may be seen that a portion of the bolt 18 is adapted to be received by and inserted into the bolt guiding member 1509, preferably by a tight fit, snug fit or the like. The portion may be referred to as a protrusion 1710. At a distal end of the protrusion 1710 a heel 1712, or shoulder, is located in order to prevent the bolt 18 from sliding out of the first or second attachment portionl502, 1504, should the screw 1702, 1704 not be tightened sufficiently.

Figure 17e shows the aforementioned cross-sectional view in the plane A. The bolt guiding member 1509 is provided with two screw holes 1706, 1708, one for each of the first and second attachment portions 1502, 1504 as mentioned above. The two screw holes 1706, 1708 may have a respective threaded inner surface. The screw holes 1706, 1708 penetrate through the bolt guiding member 1509 from an interior of the first and second attachment portions 1502, 1504 to a side surface 1720 of the bolt guiding member 1509. The side surface 1720 is shown in Figure 17c.

Figure 18a and Figure 18b illustrates an exemplifying cover plate 1506 and an exemplifying faceplate 10 of an exemplifying bolt assembly 1500.

In this example, the faceplate 10 is arranged to allow mounting of the cover plate 1506 at a first location 1802 and a second location 1804, e.g. within the recess 1508. This may be achieved by that a recess length 1806 of the recess 1508, e.g. in the longitudinal direction of the faceplate 10, is greater than a cover plate length 1808 of the cover plate 1506. The first location 1802 and the second location 1804 may be given with reference to one of two distal ends 1811, 1812 of the faceplate 10, e.g. distal in the longitudinal direction of the faceplate. Other ways of defining the first and second location 1802, 1804 are also possible, e.g. in terms of distance from a distal end of the recess 1508. A difference between the recess length 1806 and the cover plate length 1808 is given by a difference in positions of the bolt 18 for "classic" and "modern" positioning, respectively.

In embodiments, including the recess 1508 and the cover plate 1506, it is preferred that a depth of the recess 1508 is equal to, or approximately equal to, a depth of the cover plate 1506. In this context, these depths are measured along the geometrical axis 63, e.g. when the cover plate 1506 is mounted at the faceplate 10. The first location 1802 is offset the second location 1804 along the longitudinal axis 62 of the faceplate 10. As exemplified above, a distance between the first and second locations 1802, 1804 may be given by the difference in positions of the bolt 18 for "classic" and "modern" positioning.

As an example, the faceplate 10 may be provided with a first set of screw holes 1821, 1822 and a second set of screw holes 1823, 1824. The first set of screw holes 1821, 1822 is offset the second set of screw holes 1823, 1824 along the longitudinal axis 62, e.g. according to the difference in positions of the bolt 18 for "classic" and "modern" positioning as mentioned above.

Figure 19a and Figure 19b are plan views illustrating another exemplifying bolt assembly.

In one example, while disregarding the dotted lines, there is provided a first faceplate 10a and a second faceplate 10b for each of the "classic" and "modern" positioning of the bolt 18. This is thus in contrast to the examples of Figure 16, Figure 18a and Figure 18b, where the same faceplate 10 is used for both "classic" and "modern" positioning of the bolt 18. This kind of specially adapted faceplates 10a, 10b are known in the art. In this example, the bolt guiding member 1509 having the first and second attachment portions 1502, 1504, alone provides for at least some of the advantages mentioned herein.

Flowever, in one example - now considering the dotted cover plates 1506a, 1506b in Figure 19a and Figure 19b - it may be that one and the same faceplate 10 is used for door lock

arrangements adapted to either "classic" and "modern" positioning of the bolt 18. Such faceplate 10 may typically have a faceplate recess 1901 that fits closely to a peripheral contour of the cover plate 1506a as well as a peripheral contour of the cover plate 1506b. The depths of the faceplate recess 1901 is matched to thickness of the cover plate 1506a, 1506b.

In Figure 19a, a first cover plate 1506a has an opening 1507, whose position in the longitudinal direction of the first cover plate 1506a is chosen such that the bolt 18 is extractable and retractable though the opening 1507 when the bolt 18 is mounted in the first bolt attachment portion 1502. This means that the first cover plate 1506a is adapted to "classic" positioning of the bolt 18.

In Figure 19b, a second cover plate 1506b has an opening 1507, whose position in the longitudinal direction of the second cover plate 1506b is chosen such that the bolt 18 is extractable and retractable though the opening 1507 when the bolt 18 is mounted in the second bolt attachment portion 1504. This means that the second cover plate 1506b is adapted to "modern" positioning of the bolt 18.

The cover plate 1506 is thus exemplified by the first and second cover plates 1506a, 1506b, which may be considered to be different versions of the cover plate 1506, one version for "classic" and another version for "modern".

With reference to the embodiment indicated by the dashed lines in Figure 19a and Figure 19b, the cover plate 1506, according to some embodiments, is non-reversibly mountable at the faceplate 10. The opening 1507 is offset along the longitudinal axis 62 of the faceplate 10 relatively an end 1902 of the faceplate 10, previously referred to as the distal end 1812. A length of the offset is adapted to allow the bolt 18 to be mounted at the first or second attachment portions 1502, 1504 and also e.g. extractable and retractable through the opening 1507.

As described above, a purpose of the different embodiments of the cover plate 1506 is to protect the one of the first and second attachment portions 1502, 1504 in which the bolt 18 is not installed, or mounted. Said one of the first and second attachment portions 1502, 1504 may hence be protected from being contaminated with dirt, dust or debris of any kind that may obscure normal operation of the door look assembly 1. Moreover, the door lock assembly 1 is protected, at least to some extent, from being tampered with, e.g. thanks to that said one of the first and second attachment portions 1502, 1504 is not accessible with a tool, such as a picklock or the like.

Figure 20a and Figure 20b are perspective views illustrating details of a still further exemplifying bolt assembly. With this embodiment, said one of the first and second attachment portions 1502, 1504 is at least protected from dirty, but it may also, at least to some extent - though possibly less than in the previously disclosed embodiments, protect against tampering or the like.

Flence, in some embodiments, the bolt assembly 1500 further comprises an attachment portion cover 2002 adapted to be releasably mountable at the first and second attachment portion 1502, 1504 alternatingly. As an example, the attachment portion cover 2002 is thus mounted in said one of the first and second attachment portions 1502, 1504. In these embodiments, two screws 1702, 1704 may be required. In some examples, the attachment portion cover 2002 may be integrated with the bolt 18. In case the bolt 18 is asymmetric with reference to the secondary plane 61, see Figure 3, it may be that there is one bolt including attachment portion cover for the "classic" positioning and another bolt including attachment portion for the "modern" positioning. Since the attachment portion cover 2002 is integrated with the bolt 18 only one screw 1702, 1703 may be required.

The attachment portion cover 2002 is further adapted to present a flat surface 2004 facing away from the bolt guiding member 1509 when mounted in the first or second attachment portion 1502, 1504. The flat surface 2004 may be aligned with the faceplate 10 when the bolt 18 is extracted, e.g. completely extracted.

Alternatively, with embodiments including the cover plate, the flat surface 2004 may be aligned with a bolt guiding member surface 2010 of the bolt guiding member. The bolt guiding member surface 2010 faces the face plate 10 when the bolt assembly 1500 is used, or mounted, together with a door lock arrangement 1. As used herein, the term "bias", "biased", "biasing" or the like may refer to mechanical biasing by means of a spring, a plate spring or the like.

As used herein, the term "along an axis" may refer to parallelly with the axis and/or coinciding with the axis.

Each embodiment, example or feature disclosed herein may, when physically possible, be combined with one or more other embodiments, examples, or features disclosed herein.

Even though embodiments of the various aspects have been described above, many different alterations, modifications and the like thereof will become apparent for those skilled in the art. The described embodiments are therefore not intended to limit the scope of the present disclosure.