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The present invention refers to a system for anchoring a door closer to a profile frame. More precisely, the present invention refers to a system for connecting an overhead door closer to a portion of profile frame, for instance of a door and the respective frame.

Door closers are used to guarantee the secure and automatic closure of a door, for instance of doors provided in public places and/or work environments in correspondence of a service passage or a safety exit.

A door closer of known type, in particular an overhead slide type door closer, generally comprises two box-shaped bodies connected to each other by a connecting arm.

In particular, said door closer has a main body fixed to the door and a secondary body fixed to the frame, so that the sliding of a first end of the arm in the secondary body is guided by the rotation of the arm itself with respect to the main body and ensures movement of the door from an opening configuration to a closure configuration.

A further overhead door closer of known type is the door closer with compass arm. In this case, the door closer has a main body fixed to the door and a secondary body fixed to the frame and the compass-shaped arm is rotatably bound in correspondence of its ends respectively in correspondence of the two bodies. The presence of a central rotation hinge allows the door to be moved from an opening configuration to a closure configuration.

In any case, in the prior art, for the installation of door closers, the use of screwed fixing elements, for instance screws or rivets, is provided.

Hence, mounting of the door closers of known type comprises making of holes on both the door and the frame for fixing said components through screws or rivets.

A disadvantage of the door closer of known type is that, in the case where it is desired to remove the door closer, the holes made on both the door and the frame for the mounting would remain in sight.

The problems deriving from the fact that both the door and the frame must be perforated to allow the door closer to be fixed are not just aesthetic in nature.

In fact, a further disadvantage is that the making of the holes on the profile elements of the door or frame entails the elimination of the surface paint layer of the profile element, with consequent possibility of initiation of cracks in the protective coating layer.

Also, removal of the protective layer causes metal to be exposed to atmospheric agents, with consequent possibility of progress of corrosion phenomena in correspondence of the holes.

A still further disadvantage is that the making of the holes along a thickness of the profile element entails problems related to the localized structural weakening of the profile.

Therefore, the technical problem set out and solved by the present invention is to provide a door closer system allowing to obviate the drawbacks mentioned above with reference to the prior art.

Such problem is solved by the subject matter of the present invention.

It is specific subject matter of the present invention an anchorage assembly configured to anchor a door closer, having a main body and a secondary body, to a profile frame having a housing channel, comprising:

at least one fixing element configured to fix a body, selected between the main body and the secondary body of the door closer, to the profile frame;

at least one stabilising element configured to be inserted into the housing channel of the profile frame,

wherein said at least one fixing element is substantially L-shaped and has a base configured to at least partially snap fit into the housing channel of the profile frame, and a wall transverse to said base having a coupling portion configured to receive the body selected between the main body and the secondary body of the door closer, wherein the anchorage assembly further comprises binding screwed elements configured to bind said at least one stabilising element to the base of said at least one fixing element whereby an adjustment of screwing of said binding screwed elements is configured to guarantee a stability of the fixing of the body, selected between the main body and the secondary body of the door closer, to the profile frame.

According to another aspect of the invention, said at least one fixing element may have, in correspondence of a proximal end of the element itself, a cantilever-shaped portion of the base that is configured to be inserted under a first projecting wing of the housing channel of the profile frame and to bind said at least one fixing element to the profile frame.

According to a further aspect of the invention, said at least one stabilising element may have a substantially trapezoidal cross-section and is positioned at a position configured to cause, in a mounting configuration of the door closer, a first inclined portion to abut a bottom surface of said at least one fixing element and a cantilevered terminal end of a second inclined portion to abut a second projecting wing of the housing channel of the profile frame.

According to an additional aspect of the invention, the anchorage assembly may further comprise a support plate configured to be coupled to the at least one fixing element and to support the body, selected between the main body and the secondary body of the door closer, said support plate being configured to be positioned, in a mounting configuration of the door closer, between said body and a profile frame portion.

According to another aspect of the invention, said support plate and said at least one fixing element may be coupled to each other according to a male-female coupling.

According to a further aspect of the invention, a portion of said support plate may have a receiving rail configured to receive a protrusion made in correspondence of a distal end of said at least one fixing element.

According to an additional aspect of the invention, said receiving rail and said distal end of said at least one fixing element may be configured to be coupled to each other by shape coupling.

According to another aspect of the invention, the anchorage assembly may also comprise binding means, optionally screws or rivets, configured to bind the support plate to said at least one fixing element.

According to a further aspect of the invention, said support plate and said at least one fixing element may be coupled to each other by magnetic coupling.

According to an additional aspect of the invention, the anchorage assembly may comprise additional binding means, optionally screws or rivets, configured to bind the body, selected between the main body and the secondary body of the door closer, to said at least one fixing element.

It is still specific subject matter of the present invention a connection system configured to connect a door closer to a profile frame portion, comprising:

an assembly to anchor a first body of the door closer to the door profile edge, as just described; and/or

an assembly to anchor a second body of the door closer to the frame profile edge, as just described.

Preferred features of the present invention are present in the dependent claims.

Advantageously, the anchorage assembly and the door closer system which are subject matter of the present invention allows in a simple, reliable, efficient and inexpensive way to carry out the installation or replacement of a door closer without any need for making holes on the door itself for fixing the components. Other advantages, features and modes of use of the present invention will be evident from the following detailed description of some embodiments, presented by way of example and not by way of limitation.

The present invention will be now described, by way of illustration and not by way of limitation, according to its preferred embodiments, by particularly referring to the Figures of the annexed drawings, in which:

Figure 1 shows a cross section view of a system, according to an embodiment of the present invention, for anchoring a door closer with slide arm;

Figure 2 shows a cross section view of a system, according to a further embodiment of the present invention, for anchoring a door closer with compass arm;

Figure 3 shows an enlarged perspective view of a particular of the connection system for door closers of Figure 1 in a semi-open configuration of the door closer;

Figure 4 shows an enlarged perspective view of a particular of the connection system for door closers of Figure 1 in a semi-closed configuration of the door closer;

Figure 5 shows a cross section view of an assembly for anchoring the main body of the door closer to the profile edge of the door, according to the embodiment of the present invention shown in Figure 1;

Figure 6 shows a cross section view of an assembly for anchoring the secondary body of the door closer to the profile edge of the frame, according to the embodiment of the present invention shown in Figure 1;

Figure 7 a cross section view of an assembly for anchoring the main body of the door closer to the profile edge of the door, according to the embodiment of the present invention shown in Figure 2.

As it will be shown in greater detail later, reference will be made to preferred embodiment of the invention.

All the embodiments achieve the same advantages listed above with reference to the system according to the invention, through the same technical solution of a relative connection between a body of the door closer and a profile edge of the door or frame.

In the following description, components common to different embodiments will be identified with the same numeration.

A first embodiment according to the present invention has an anchorage assembly 10, 20 and a connection system for door closers - overall indicated with 100 - comprising the same. As shown in Figures 3-5, the anchorage assembly 10 has an element 6 fixing the main body of the door closer to the profile edge of the door. The fixing element 6 has a substantially L-shaped main transverse cross section having a base 2 configured to snap fit into a housing channel made on the profile.

As shown in Figures 5 to 7, the edges of the door and the respective frame are made through profiles - for instance Euro groove profiles - having a channel for housing accessory elements, such as hinges.

The housing channel (into which the base 2 of the fixing element 6 snap fits) is made as a rail defined between two side profiles 11A and 11B. Each side profile 11A and 11B has, in correspondence of an upper end, a projecting wing 12A and 12B protruding towards the other profile (respectively 11B and 11A) so as to create a housing channel for an end of the fixing element 6, as better described later.

In correspondence of a proximal end P of the fixing element 6, a portion of the base 2 of the element 6 itself is cantilever shaped - as shown in Figure 5 - so as to be capable to be inserted under the first projecting wing 12A defining the housing channel of the profile and to bind the fixing element 6 to the door profile.

Once that the proximal end P is inserted into the channel of the profile, it is possible to further bind the fixing element 6 to the door through a stabilising element 8 that is configured to insert into the housing channel of the profile, between the base 2 of the fixing element 6 and the second projecting wing 12B defining said receiving channel.

The stabilising element 8 has a substantially trapezoidal cross-section and is positioned so that, in a mounting configuration of the door closer, a first inclined portion abuts a bottom surface of the fixing element 6 and a cantilevered terminal end of a second inclined portion abuts the second projecting wing 12B of the housing channel of the profile.

The base 2 of the fixing element 6 and the stabilising element 8 are coupled to each other by a binding screwed element 7, for instance a screw, that adjust the relative distance thereof and thus the adhesion of said abutting edges to the receiving space of the channel of the profile.

In fact, advantageously, through an adjustment of screwing of the binding screwed element 7, a stability of the fixing of the door closer to the profile frame is guaranteed.

The cantilever shaped second portion of the stabilising element 8 has a transversely extended abutting surface, so as to allow the use thereof on a different profile, for instance having a wider receiving channel. The specific shape of the stabilising element 8 and the specific mode of connection to the fixing element 6 advantageously allow to adapt the components to various width of the channel, for instance replacing - when necessary - only the size of the stabilising element 8 employed.

The fixing element 6 is shaped so as to have, in a mounting configuration, a portion 5 projecting from the profile, i.e. a portion of wall transverse to the base 2. In correspondence of such portion 5, the fixing element 6 is connected to the main body of the door closer.

In particular, the anchorage assembly 10 comprises a support plate 4 configured to be coupled to the fixing element 6 and to be positioned between the main body of the door closer and the fixing element 6.

In particular, the plate 4 has a coupling planar surface configured to be coupled to the plane surface of the profile, and sized so as to receive, for the coupling, the surface extension of a face of the main body so as to guarantee the adhesion thereof to the upper edge of the door and to avoid possible insertion of undesired extraneous bodies between the main body of the door closer and the door profile.

The plate 4 also has a portion configured to project upwards from the profile edge of the door, in a mounting configuration of the door closer. In particular, said portion is shaped as a protrusion longitudinally that extends along the extension of an edge of the plate 4 itself and that is preferably sized so as to be capable to be resting in correspondence of an upper edge of the door, in a mounting configuration of the door closer.

In an embodiment of the present invention, the fixing element 6 and said support plate

4 are connected to each other through a male-female connection and locking screwed elements, in particular in correspondence of a distal end of the fixing element 6.

Preferably, the support plate 4 has a receiving housing for the fixing element 6. In particular, as shown in Figure 5, the protrusion of the plate 4 has a slide rail, made internally to the protrusion, and preferably along the whole longitudinal extension of the protrusion itself.

In correspondence of a distal end of the fixing element 6 a protruding element 60 is present that is configured to be received, preferably by shape coupling, within the rail of the plate 4.

Advantageously, the slide rail is shaped so as to allow the protruding element 60 to slide inside the rail, along an axis of longitudinal extension of the rail, and to contain possible transverse movements thereof.

In particular, as shown in the Figures, both the slide rail and the protruding element 60 have a truncated cone cross section directed so that the major base of the truncated cone cross section is positioned inside the rail and the minor base of the truncated cone cross section is positioned in correspondence of the aperture of the rail.

In this way, i.e. thanks to the undercuts of the geometry of said coupling, the protruding element 60 longitudinally sliding inside the slide rail is bound with respect to a transverse direction.

Projections within the slide surface of the rail can be provided to slidingly bind and longitudinally block the protruding element 60 with respect to the rail, for instance through mechanical interference.

Preferably, as shown in Figures 3-5, a binding element 3, for instance a screw or rivet, as described above, is configured to block the positioning of the protruding element 60 with respect to the plate 4 and thus to bind the plate 4 to the fixing element 6.

Depending on the specific implementation needs, a male-female coupling different from what described above can be provided. For instance, in embodiments not shown in the Figures, the male coupling component can be made in correspondence of the protrusion of the plate 4, and the female coupling component can be made in correspondence of the distal end 60 of the fixing element 6.

In addition or alternatively, the fixing element 6 and the support plate 4 may be connected to each other by magnetic coupling.

The assembly 10 described so far allows a quick disassembly of the door closer from the profile of the door itself, advantageously without leaving holes and/or anchorage elements on the door surface in sight.

The assembly for anchoring the compass door closer to the door profile is substantially identical to the assembly described above with reference to the slide type door closer. Therefore, the two assemblies 10 are identified with the same numeral in both Figure 1 and Figure 2.

In particular, the anchorage system according to the invention is particularly advantageous when applied to a door closer with compass arm of the multi-force or selectable force type. In fact, as known, the force is a characteristic of the door closer relating the door closer itself to the leaf size. The multi-force or selectable force door closer may express a plurality of forces and thus be adapted to a plurality of door size; to this end, the main body of the door closer is fixed to the door positioning it in a predetermined position on the leaf with respect to the hinges of the leaf itself. By way of example, for a door 900 millimetres wide, the door closer necessary for its closure must be of force EN3 (according to the reference standard EN 1154) and, when the door closer is of the multi-force or selectable force type, to express force EN3 the main body of the door closer must be positioned at a distance from the hinges of the door of 200 millimetres. However, sometimes it happens that the climatic conditions impose the mounting of the main body of the door closer in a position expressing a una force greater than those indicated for a certain door size, and it is frequent that is ascertained only after that the main body of the door closer has been mounted and thus after that the door has been perforated, with the need of perforating again the door to position the main body of the door closer in a different position. The anchorage system according to the invention allows to reposition the main body of the door closer easily and without any need of perforating the door.

Instead, as regards the connection to the frame profile, the anchorage assembly of the slide type door closer and the anchorage assembly of the compass door closer present some differences and therefore they are identified with 20 and 20', respectively.

As shown in Figures 6 and 7, both the assemblies 20 and 20' have an element 16 fixing the door closer to the frame profile. The fixing element 16 has a substantially L-shaped main transverse cross section having a base 2 configured to snap fit into a housing channel made on the profile. The housing channel is made as a rail defined between two side profiles 21A and 21B. Each side profile 21A and 21B has, in correspondence of an upper end, a projecting wing 22A and 22B protruding towards the other profile (respectively 21B and 21A) so as to create a housing channel for an end of the fixing element 16, as described above.

In correspondence of a proximal end P' of the fixing element 16, a portion of the base 2 of the fixing element 16 is cantilever shaped - as shown in Figures 6 and 7 - so as to be capable to be inserted inside the first projecting wing 22A of the housing channel of the profile and to bind the fixing element 16 to the frame profile.

Once that the proximal end P' has been inserted into the profile channel, it is possible to further bind the fixing element 16 to the frame through a stabilising element 18 that is configured to insert into the housing channel, between the base 2 of the fixing element 16 and the second projecting wing 22B defining the receiving channel.

The stabilising element 18 has a substantially trapezoidal cross-section and is positioned so that, in a mounting configuration of the door closer, a first inclined portion abuts a bottom surface of the fixing element 16 and a cantilevered terminal end of a second inclined portion abuts the second projecting wing 22B of the housing channel of the profile.

The base 2 of the fixing element 16 and the stabilising element 18 are coupled to each other by a binding screwed element 17, for instance a screw, that adjust the relative distance thereof and thus the more or less intense adhesion of said abutting edges to the receiving space of the profile.

In fact, advantageously, through an adjustment of screwing of the binding screwed element 17, a stability of the fixing of the door closer to the profile frame is guaranteed.

The cantilever shaped second portion of the stabilising element 18 has a transversely extended abutting surface, so as to allow the use thereof on a different profile, for instance having a wider receiving channel.

As stated above, the specific shape of the stabilising element 18 and the specific mode of connection to the fixing element 16 advantageously allow to adapt the components to various width of the channel, for instance replacing, when necessary, only the size of the stabilising element 18 employed.

As shown in Figure 7 (related to the pin of the compass arm), the fixing element 16 has a wall 5, transverse to the base 2, configured to support the secondary body of the door closer. In an embodiment not shown in the Figure a magnetic connection between the surfaces which are in contact in a mounting configuration is provided. In addition or alternatively, a distal end 61 of the wall 5 of the element 16 is configured to house, for the coupling, for instance by shape coupling, the secondary body of the door closer. In particular, the assembly 20' comprises additional binding means 13, for instance screws or rivets, configured to bind the secondary body of the compass door closer to the fixing element 16.

As shown in Figure 6 (related to the rail of the slide arm), the assembly 20 for anchoring a slide arm door closer to the frame profile also comprises a support plate 14 configured to be coupled to the fixing element 16 and to be positioned, in a mounting configuration of the door closer, between the secondary body and the fixing element 16.

The plate 14 has a planar surface configured to be coupled to the plane surface of the body of the door closer through additional binding means 13 such as screws or rivets. A further surface of the plate is configured to be coupled to the distal portion of the fixing element 16.

In an embodiment according to the present invention, the fixing element 16 and the plate

14 are magnetically connected to each other. In addition or alternatively, the fixing element 16 and the support plate 14 are connected to each other through a male-female coupling, in particular a shape coupling.

As shown in Figure 6, in correspondence of the distal portion of the fixing element 16, a protruding element 61 is provided that is configured to be received, preferably by shape coupling, inside a housing obtained in the plate 14.

Depending on the specific implementation needs, a male-female coupling different from what described above can be provided. For instance, in embodiments not shown in the Figures, the male coupling component can be made in correspondence of the plate 14, and the female coupling component can be made in correspondence of the distal end of the fixing element 16.

Advantageously, the use of the plate 14 allows to use the same fixing element 16 for mounting both a compass door closer and a slide door closer, thus also optimising possible maintenance and/or replacement steps.

Moreover, the plate 14 has a plurality of holes that in a mounting configuration of the assembly are not visible to a user but which allow the mounting of door closers on both right- opening doors and left-opening doors, ensuring in both cases the maintenance of the required geometric symmetry during use and further optimising possible door closer maintenance and/or replacement steps.

The assembly 20, 20' described so far allows a quick disassembly of the body of a door closer from the frame profile, advantageously without leaving holes and/or anchorage elements on the frame surface in sight.

Therefore, advantageously the connection system 100 allows a quick assembly of an overhead door closer to a door and to the respective frame leaving unchanged their load-bearing structure.

Also, for instance in case of maintenance or partial replacement of the components of a door closer and/or of one of the profile of the door or frame, it is provided that the connection system 100 may be adapted to comprise at least one of the two anchorage assemblies 10 and/or 20, or 20', and it may be connected to at least the door or the frame without any need of making holes.

The preferred embodiments of this invention have been described and a number of variations have been suggested hereinbefore, but it should be understood that those skilled in the art can make other variations and changes without so departing from the scope of protection thereof, as defined by the attached claims.