LIDHOLM, Jan (Väla Källängen, Lidköping, SE-531 97, SE)
LIDHOLM, Jan (Väla Källängen, Lidköping, SE-531 97, SE)
| CLAIMS 1. Motor-driven driving arrangement at a door system having door sections (3, 7, 11; 3' , 7' , 11' , 13, 17; 13' , 17' ) swingably arranged along essentially vertical pivot shafts (2, 4, 6, 8, 10; 2' ) where adjacent pivot shafts (4, 6; 8, 10) are arranged in pairs in a rigid mounting in a fitting (5, 9) but parallel-displaced from each other, the system being provided with members (3, 3' , 26-31) adapted to, upon motor-driven manoeuvring, impart a pivoting motion to the sections (3, 7, 11; 3' , 7' , 11' , 13, 17; 13' , 17' ) in such a direction and order that turn- ing of the sections occurs in a direction that counteracts operation of said fitting in an undesired direction, characterized in that outer door sections (17, 17' ) are commonly operatable by a driving arrangement that comprises a gear belt (25), gear chain or the like arranged between two cogwheels (23, 24) and in engagement with the cogwheels, the gear belt (25) supporting each a rod (26, 27) on opposite sides of an imaginary line between the centre of the cogwheels (23, 24), which rods are arranged to extend in the direction of the extension of the gear belt and outward in opposite directions, with the outer end of the respective rod (26, 27) arranged to be engaged with a point of action (12, 12' ; 22, 22' ) situated essentially halfway between the longitudinal edges of the outer door section (11, 11' ; 17, 17' ), at the outer door section (17, 17' ) of the respective door leaf, and in which point of action, a pulling force (A) closing the door and a pushing force (B) opening the door, respectively, can be applied, between the end of each rod (26, 27) and the respective point of action (22, 22' ) there being arranged a fixed bracket (28, 29) arranged on the rod, which is articulately united to each a short arm (30, 31) accommodating said points of action, and which short arm (30, 31) is ro- tationally fixedly arranged at said outer door section (17, 17' ) at an angle to the same. 2. Arrangement according to claim 1, characterized in that the inner door section (3, 3' ) is swin- gably arranged around a pivot shaft (2, 2' ) arranged adjacent to a doorframe (1, 1' ) and where said inner door section (3, 3' ) in the entirely closed position of the door is arranged to extend at another angle than 90° to said pivot shaft (2, 2' ) with the purpose of imparting an ini- tial direction of motion to the door sections upon action by an opening force. 3. Arrangement according to any one of the preceding claims, characterized in that the respective doorframe (1, 1) is formed as a box girder in which the folded door leaf sections (3, 7, 11; 3' , 7' , 13, 17; 13' , 17' ) are entirely recessed in the entirely open position of the door. 4. Arrangement according to any one of the preceding claims, characterized in that the outer door leaf sections (11, 11' ; 17, 17' ) on opposite sides are provided with flanges that in the closed position of the door system form an overlapping seal (32) . 5. Arrangement at a door system having door sections (3, 7, 11; 3' , 7' , 11' , 13, 17; 13' , 17' ) swin- gably arranged along essentially vertical pivot shafts (2, 4, 6, 8 10; 2' ) where adjacent pivot shafts (4, 6; 8, 10) are arranged in pairs in a rigid mounting in a fitting (5, 9) but parallel-displaced from each other, the system being provided with members (3, 3' , 26-31) adapted to, upon operation, impart a pivoting motion to the sections (3, 7, 11; 3' , 11' , 13, 17; 13' , 17' ) in such a direction and or- der that turning of the sections occurs in a direction that counteracts operation of said fitting in an undesired direction, characterized in that the inner door section (3, 3' ) is swingably arranged around a pivot shaft (2, 2' ) arranged adjacent to a doorframe (1, 1' ) and where said inner door section (3, 3' ) in the entirely closed position of the door is arranged to extend at another angle than 90° to said pivot shaft (2, 2' ) and the appurtenant doorframe (1, 1' ) with the purpose of imparting an initial direction of motion to the door sections upon action by an opening force, as well as by the other sections (7, 11 and 7' , 11' , respectively) of the respective door leaf extending in a straight line toward each other, wherein by virtue of the angulation obtained by the inner section (3, 3' ) in relation to the main extension of the other sec- tions of the door leaves, an operation of the door leaf will automatically obtain an initial direction that entails that the sections of the door leaf are operated to be swung in the desired correct direction. 6. Arrangement according to claim 5, characterized in that the outer door section (11, 11' ; 17, 17' ) has a point of action (12, 12' ; 22, 22' ) situated essentially halfway between the longitudinal edges of the door section, and in which point of attack, a pulling force (A) closing the door and a pushing force (B) opening the door, respectively, can be applied. 7. Arrangement according to claim 5, characterized in that the respective doorframe (1, V ) is formed as a box girder in which the folded door leaf sections (3, 7, 11, 3' , Ύ , 11' ; 13, 17, 13' , 17' ) are entirely recessed in the entirely open position of the door. |
The invention relates to a motor-driven driving arrangement at a door system having door sections swingably arranged along essentially vertical pivot shafts where adja- cent pivot shafts are arranged in pairs in a rigid mounting in a fitting but parallel-displaced from each other, the system being provided with members adapted to, upon motor-driven manoeuvring, impart a pivoting motion to the sections in such a direction and order that turning of the sections occurs in a direction that counteracts operation of said fitting in an undesired direction.
Background of the Invention Door systems for shutting and opening door- and gateways in buildings exist in many different embodiments. Among the same, folding doors offer generally a lower space requirement for the door sections in the open position of the door or gate than for example sliding doors.
It is previously known with door systems having door sections swingably arranged along essentially vertical pivot shafts, where the pivot shaft of at least one first door section is arranged adjacent to a first doorframe or side wall in a doorway intended to be shut by the door system. At the long side of said first door section facing away from the doorframe, there is arranged a second pivot shaft that supports a rigid fitting provided with a third pivot shaft arranged at a distance from the second pivot shaft and parallel thereto that supports a second door section swingably around the third pivot shaft. The second door section is then provided with a support wheel movably sus- pended to a carrying member that extends above the doorway in the longitudinal direction of the carrying member, for the movement of the first and second door leaf between a closed position and entirely or partly open positions, with pressure-relief of the first pivot shaft.
One problem that is particularly pronounced, when a door system of this kind is provided with a motor that imparts a movement to the different door sections in the opening or closing direction, is that when the door system is in the closed position, the different sections of the door leaves are all orientated along a common straight line. Since the pivot shafts between the first and second door leaf sections and between the second and third sections, etc., are placed on opposite sides of the door leaf, it is important upon opening that the different sections are folded in the correct direction, so that the pivot shafts are not damaged and so that the different sections in the open position will be situated against each other. Examples of other foldable panels and doors that are supported foldably journalled between an extended closed position and a packed together open position, respectively, are shown in US 5,099,904 A; JP 03161675 A; GB 929847 and US 6, 098, 695 Al . Summary of the Invention
Therefore, the object of the present invention is to provide a driving arrangement at a door system of the men- tioned kind that entails that the problem described above is eliminated.
Said object is achieved by means of a motor-driven driving arrangement according to the present invention that essen- tially is characterized in that outer door sections are commonly operatable by a driving arrangement that comprises a gear belt, gear chain or the like arranged between two cogwheels and in engagement with the cogwheels, the gear belt supporting each a rod on opposite sides of an imaginary line between the centre of the cogwheels, which rods are arranged to extend in the direction of the extension of the gear belt and outward in opposite directions, with the outer end of the respective rod arranged to be engaged with a point of action situated essentially halfway between the longitudinal edges of the outer door section, at the outer door section of the respective door leaf, and in which point of action, a pulling force closing the door and a pushing force opening the door, respectively, can be applied, between the end of each rod and the respective point of action there being arranged a fixed bracket arranged on the rod, which is articulately united to each a short arm accommodating said points of action, and which short arm is rotationally fixedly arranged at said outer door section at an angle to the same.
Ά further object of the invention is that, in an arrangement at a door system having door sections swingably arranged along essentially vertical pivot shafts where adja- cent pivot shafts are arranged in pairs in a rigid mounting in a fitting but parallel-displaced from each other, and the system being provided with members adapted to, upon operation, impart a pivoting motion to the sections in such a direction and order that turning of the sections occurs in a direction that counteracts operation of said fitting in an undesired direction, be able to get the respective door leaf to open reliably upon manual as well as motor-driven operation without running the risk of the door sections being broken because of erroneous initial operation of the door leaves upon the opening.
Said further object is achieved by means of an arrangement according to the kind mentioned that essentially is char- acterized in that the inner door section is swingably arranged around a pivot shaft arranged adjacent to a doorframe and where said inner door section in the entirely closed position of the door is arranged to extend at another angle than 90° to said pivot shaft and the appurte- nant doorframe with the purpose of imparting an initial direction of motion to the door sections upon action by an opening force, as well as by the other sections of the respective door leaf extending in a straight line toward each other, wherein by virtue of the angulation obtained by the inner section in relation to the main extension of the other sections of the door leaves, an operation of the door leaf will automatically obtain an initial direction that entails that the sections of the door leaf are operated to be swung in the desired correct direction. Brief Description of the Drawings
In the following, the invention will be described in more detail, reference being made to the embodiment examples illustrated in the accompanying figures, wherein
Fig. 1 shows in perspective a door leaf with three sections retracted in a doorframe, Fig. 2 illustrates schematically in a view from above a door system that embraces two door leaves having three sections each in an arrangement according to the invention and in an entirely closed position, Fig. 3 is a view corresponding to Fig. 2 with the two door leaves in a partly open position.
Fig. 4 is a view that corresponds to Figs. 2 and 3 and shows the two door leaves in an entirely open position concealed in the respective doorframe,
Fig. 5 is a view corresponding to a part of Fig. 3 and with a point of action and directions of action of a motor-driven operating device,
Fig. 6 shows in a schematic view from above an alternative embodiment of a door system according to the invention in an entirely open position, Fig. 7 is a view corresponding to Fig. 6 with the door sections in a partly open position, and Fig. 8 is a view of the door system according to Figs. 6 and 7 in an entirely closed position.
Detailed Description of Preferred Embodiments
Fig. 1 shows a perspective view of a doorframe 1 having a pivot shaft 2 that is arranged in connection thereto and turnably supports one edge of an inner section 3 of a door leaf. At the opposite edge of the inner section 3, there is arranged a second pivot shaft 4 that via a fitting 5 supports a third pivot shaft 6 at a distance from the second pivot shaft 4 and parallel to the second pivot shaft 4. Around this third pivot shaft 6, a second door section 7 is turnably suspended, which along its side facing away from the third pivot shaft 6 is provided with a fourth pivot shaft 8 that via a second fitting 9 communicates with a fifth pivot shaft 10 that turnably supports a third door leaf section 11. It should be noted that the two fittings 5 and 9 that connect the pivot shafts 4 and 6 and 8 and 10, respectively, with each other, are situated on opposite sides of the door leaf. In Fig. 1, the door leaf is shown in a partly open position. Each door leaf may naturally also have more than three sections 3, 7, 11, every second pivot shaft fitting being placed on the opposite side I, II of the door leaf compared with the adjacent fittings .
In Fig. 2, in a schematic view from above, there is illustrated a door system embracing two door leaves of the kind illustrated in Fig. 1, each of which having three sections 3, 7, 11 and 3' , 7' , 11' , respectively. In the view shown in Fig. 2, the doorway is entirely closed, and the two outer sections 11 and 11' are placed edge to edge with each other with the outwardly facing edges thereof. Alternatively, the outer edges of the two outer sections 11, 11' may also be formed to overlap each other (not shown) in order to provide a strengthened sealing function be- tween the two door leaves in the closed position of the door .
As is illustrated in Fig. 1, the inner door leaf sections 3, 3' , which are turnably arranged around the first pivot shafts 2, 2' belonging to the respective doorframe 1 and 1' , respectively, in the entirely closed position of the door, are arranged to extend at an angle from the respective pivot shaft, while the two other sections 7, 11 and 7' , 11' , respectively, extend in a straight line toward each other.
By virtue of the angulation obtained by the inner section 3, 3' in relation to the main extension of the other sections of the door leaves, an operation of the door leaf will automatically obtain an initial direction that entails that the sections of the door leaf are swivelled in the correct direction.
The point of action of an operation of the door leaves in the opening or closing direction lies at a middle part of the outer section, 11, 11' and is designated by the reference designation 12, 12' in the drawing, irrespective of whether the manoeuvring of the door system is carried out by means of motor operation or manually.
Fig. 3 shows in a view corresponding to Fig. 2 the positions of the different door sections when the door has been opened (or closed) halfway, and in Fig. 4, there is shown how each of the respective door leaves with their sections 3, 7, 11 and 3' , 7' , 11' , respectively, is concealed within the respective doorframe 1, 1' when the door is entirely open.
Fig. 5 shows in a schematic view from above a half open door leaf, corresponding to the upper part in Fig. 3, there being also shown how a pulling force A or a pushing force B is imparted to the point 12 at the middle of the outer section 11 in order to close and open, respectively, the door system.
In Fig. 6, in a schematic view from above, there is shown an alternative embodiment of a door system according to the invention, and where the door system is shown with the entire opening uncovered, i.e., the two sections of the respective door leaf are foldingly placed retracted in the recessed doorframes 1, 1' . In contrast to the embodiment illustrated in Figs. 1 to 5, the variant shown here has only two sections 13, 17 and 13' , 17' , respectively, instead of three sections in each door leaf. As in the previous embodiment, a drive · mechanism is articulately attached to a point 22, 22' situated principally halfway between the ends of the outer door section 17 and 17' , respectively, of each door leaf.
Above the doorway, there is schematically shown a driving arrangement for the manoeuvring of the door system, manually or by means of a motor, not shown.
In this embodiment, like an embodiment at the door system according to the initially mentioned previously known door system, the driving arrangement is made of two rotatably mounted cogwheels, 23, 24, which support and are in en ¬ gagement with a gear belt 25 or the like. Two rods 26 are attached to opposite sides of the gear belt 25, 27 and extend toward the respective doorframe 1, 1' and essentially in the same direction as the gear belt 25. At the outer end of the respective rod 26, 27, there is arranged each a fixed bracket 28, 29; 29' that at its outer end at the point of attachment 22 and 22' , respectively, articulately supports a short arm 30, 31 each, which, at its end facing away from the bracket via attachments 32 and 33, respectively, is rotationally fixedly attached to the outer door section 17, 17' in each door leaf, and then arranged so that the short arm 30, 31 always is obligue in relation to the appurtenant door leaf. When the doorway is entirely uncovered, as is shown in Fig. 6, the rods 26, 27 are in their outer positions and the sections 13, 17; 13' , 17' of the door leaves are folded so that they abut against each other and are entirely inserted in the respective doorframe .
By the rods 26, 27 being mounted connected with the gear belt 25 on opposite sides of a line between the cogwheels 23, 24, the outer door section 17, 17' and the inclined short arm 30, 31 will be influenced by an angled force di- rection, by which the respective door leaf obtains a correct orientation of the folding of the door sections when the drive mechanism is operated.
In Fig. 7, the door system according to Fig. 6 is shown during a closing movement in progress or in a partly closed position, and in Fig. 8, there is shown, on a greater scale, the same door system in an entirely closed position . In Fig. 8, there is seen more clearly the mounting of the inner door sections 13, 13' to the respective doorframe 1, 1' and also how the two sections 13, 17; 13' , 17' of the respective door leaf are united by means of each a fitting 5, 5' , which implies that the pivot shafts 4, 6; 4' , 6' in the different door sections 13, 17; 13' , 17' will be par ¬ allel-displaced from each other. In this figure, it is moreover seen how the two door leaves in the entirely closed position of the door overlap each other with a flange each at edges meeting each other in a common point of intersection 3 . Also by the design of the door system according to the invention shown in Figs. 6 to 8, by the placement of the rods 26, 27 and by the short, inclined arms 30, 31, the different sections 13, 17 and 13' , 17' , respectively, will, upon operation of the motor-driven driving arrange- ment, be simultaneously folded in the correct direction, so that pivot shafts and fittings do not become damaged in the opening and closing movements of the door leaves .
The invention is not limited to the embodiments illus- trated in the appended drawings and described in connec ¬ tion with the same, but modifications and variants may oc ¬ cur within the scope of the appended claims.