Patent Application
20130047514
The invention relates to a fastening plate for a door closer according to the preamble of claim 1. Furthermore, the invention relates to a door closing device comprising such a fastening plate.
A door closer is used for the purpose of automatically closing a building door. Such door closers are also used, e.g., in fire doors. The automatic closing movement is caused by a closing mechanism and/or closing electrical system integrated in the door closer.
So-called fastening plates (installation plates) are known for fastening such a door closer from the prior art, which are fastenable with a support side on a substrate provided for this purpose, e.g., a wall, a doorframe, a door leaf, or the like, and have a receptacle side opposite to the support side for receiving the door closer to be fastened. Such a fastening plate is known from DE 20 2007 005 265 U1.
Firstly, the fastening plate is fastened using the support side on the substrate provided for this purpose. The door closer is then installed on the receptacle side of the fastening plate. For this purpose, the door closer must be aligned relative to the fastening plate. This is performed in that the door closer having inserted fastening screws is pushed back and forth on the already fixed fastening plate to find the matching screw holes in the fastening plate. This is extraordinarily cumbersome in particular in the case of overhead installation.
The invention is therefore based on the object of remedying the above-mentioned disadvantages and improving the installation friendliness.
This object is achieved by a door closing device and a fastening plate according to the independent claims. Preferred refinements are specified in the dependent claims.
According to the invention, a fastening plate for a door closer is proposed, having a receptacle side provided for receiving the door closer and having a support side opposite to the receptacle side, these sides being separated by a peripheral edge and at least one projection that protrudes outward on the edge being formed on this peripheral edge, the projection being provided for the purpose of engaging in a formfitting manner in a corresponding recess on the door closer to be fastened, in order to thus cause an alignment of the door closer to be fastened relative to the fastening plate.
The projection, which protrudes outward or projects on the edge beyond the outer contour of the fastening plate, is used for the purpose of engaging in a formfitting manner in a corresponding recess, e.g., a groove or the like, on the door closer to be fastened, this recess preferably being formed in the housing (door closer housing) of the door closer. “Outer contour” means the outline of the geometrical basic shape (with respect to the horizontal projection, i.e., viewing direction perpendicular to the planar extension of the fastening plate). A plurality of projections are preferably provided on the fastening plate, which engage in a corresponding plurality of recesses on the door closer or door closer housing. Alignment and preferably also locking (fixing) of the door closer to be fastened is thus caused on the fastening plate. When the door closer is put on or pushed back and forth, a projection on the fastening plate catches in a recess provided for this purpose on the door closer or door closer housing, whereby the installation is substantially simplified. In addition to the alignment and optional locking function, a holding/fastening function can also be caused via the interlock produced between door closer and fastening plate. The fastening plate according to the invention can be produced in a cost-neutral manner in relation to the fastening plate known from DE 20 2007 005 265 U1.
According to a preferred refinement, it is provided that the fastening plate is implemented as essentially planar, and the at least one projection extends within the plane of the fastening plate. This means that the projection protruding outward on the edge is not angled or tailored in another manner. If multiple projections are provided, they preferably all lie within the plane of the fastening plate.
According to a preferred refinement, it is provided that the projection is implemented as a tongue. This tongue (in the horizontal projection) preferably has a substantially rectangular contour or shape. In particular, the width of the tongue is a multiple of the protruding length. The transitions between the peripheral edge and a projection or a tongue are preferably implemented as optimized with respect to the occurring tension curves. In the case of a plurality of projections or tongues, they are preferably implemented identically.
According to a preferred refinement, it is provided that the fastening plate has a substantially rectangular outer contour. The rectangular shape relates to a geometric basic shape of the fastening plate recognizable in horizontal projection, Deviations from the recognizable rectangular shape, e.g., rounded areas and/or waists, are preferably also to be included.
According to a preferred refinement, it is provided that the fastening plate comprises an even number of projections, which are arranged diametrically opposite in pairs on the long sides of the rectangular outer contour, A total of four projections are preferably provided.
According to a preferred refinement, it is provided that the fastening plate is implemented as a one-piece sheet-metal molded part. Such a sheet-metal molded part may be produced, e.g., as a stamped part in one work step. The thickness of the sheet-metal material is preferably in the range of 1 to 5 mm. In particular, this is a sheet steel material.
According to a preferred refinement, it is provided that the fastening plate has bores (through bores for fastening on a substrate), threaded bores (screw holes for screwing down the door closer), recesses, depressions, protrusions, and/or stiffening elements. (At least one individual one of the listed elements). In particular, it can be provided with respect to the bores and/or the threaded bores that multiple hole patterns are formed, whereby different installation positions are made possible, so that the fastening plate can also be used as an adapter plate. The bores and/or threaded bores can be implemented as countersunk on the receptacle side.
Furthermore, a door closing device is proposed according to the invention, comprising a fastening plate according to the invention and a door closer, the door closer being implemented having a door closer housing which receives the closing mechanism and/or closing electrical system, and which has a collar section, which at least partially overlaps and covers the peripheral edge of the fastening plate in the fastened state (i.e., with installed or fastened door closer), at least one recess (e.g., a groove) corresponding to the projection on the fastening plate being arranged in this collar section, which is intended for the formfitting engagement of the projection upon the fastening of the door closer on the fastening plate, in order to thus cause an alignment and optional locking of the door closer to be fastened relative to the fastening plate. Furthermore, the door closing device according to the invention can optionally comprise a cover (hood).
With the door closing device according to the invention, the installation or fastening of the door closer on the fastening plate can be performed rapidly and precisely. Through the interlocking engagement of the projection of the fastening plate in the recess provided for this purpose, an aligned position of the door closer relative to the fastening plate is exactly predefined. The door closer housing can also have multiple recesses in relation to one projection, however, whereby various alignment positions are made possible. It is preferably provided that the fastening plate has multiple projections and exactly one corresponding recess is provided in the collar section of the door closer housing for each of these projections, whereby multiple interlocking engagements can be caused.
An essential aspect of the door closing device according to the invention can also be seen in that the collar section of the door closer housing at least partially and preferably completely covers the edge of the fastening plate, so that the fastening plate is no longer visible when the door closer is installed or fastened (i.e., in the fastened state). This has technical and aesthetic advantages.
According to a preferred refinement, it is provided that the at least one recess in the collar section of the door closer housing is implemented as a recess which completely penetrates the housing wall. When the door closer is installed, the projection of the fastening plate engaging in a corresponding recess is therefore (externally) still visible. In this way, the installation can be simplified, since the projection and the corresponding recess can be brought into engagement in an obvious manner very easily. If there is a plurality of recesses, all recesses are preferably implemented in this manner.
According to another preferred refinement, it is provided that the at least one recess in the collar section of the door closer housing is only implemented on the inner side of the housing wall. I.e., the recess does not entirely penetrate the housing wall, but rather extends, e.g., only up to the middle of the door closer housing wall. When the door closer is installed, the projection of the fastening plate engaging in a corresponding recess is therefore not (externally) visible. If there is a plurality of recesses, all recesses are preferably implemented in this manner.
The invention is explained in greater detail hereafter in a nonrestrictive manner on the basis of an exemplary embodiment illustrated in the figures. In the figures:
On the long sides of the peripheral edge 103, a total of four projections 105a to 105d, implemented as tongues, are arranged diametrically opposite in pairs, which are oriented outward or point outward in relation to the rectangular outer contour of the fastening plate 100 (according to the dashed auxiliary lines). The projections 105a to 105d have a rectangular shape in the horizontal projection, The width of the projections 105a to 105d is a multiple of the protruding length (in relation to the outer contour). The projections 105a to 105d are implemented as identical in the example, but can also have a differing implementation with respect to the shape and/or the dimensions.
Furthermore, the fastening plate 100 has multiple bores (through bores) 106 and threaded bores 107, which are arranged in the example in a row lying between the opposing projections 105a/105b and 105c/105d. Further bores are identified by 106′. In addition, the fastening plate 100 has a central recess 108 and a longitudinal notch 109, which is used as a stiffening element.
The fastening plate 100 is fastened using the support side 101 on a substrate provided for this purpose (e.g., a wall, a doorframe, a door leaf, or the like), the fixing being performed by means of screws, which are guided coming from the receptacle side 102 through the bores 106. On the receptacle side 102 (not visible in the illustration), the bores 106 can be implemented as countersunk bores. A door closer 200 can accordingly be installed or fastened on the receptacle side 102, as shown in
In order to simplify the installation of the door closer 200, it is placed on the receptacle side 102 of the fastening plate 100, which is already fastened on the substrate, and aligned relative to the fastening plate 100. The alignment is performed by multiple recesses 205a-205d, which are located in a collar section 203 of the door closer housing 201 and which are provided so that the projections or tongues 105a-105d on the fastening plate 100 can engage therein in a formfitting manner. Thus through the interlocking engagement of the projections 105a-105d in the respective corresponding recesses 205a-205d, the door closer 200 is brought into the correct position in relation to the fastening plate 100 and in particular aligned with the threaded bores 107. Screwing down is accordingly possible without problems. Through the interlocking engagement, forces and torques occurring during operation on the door closer 200 can also be dissipated into the fastening plate 100, so that a holding/fastening function can also be caused via the interlock thus caused.
As shown in
Alternatively, the recesses 205a-205d in the color section 203 of the door closer housing 201 can only be implemented on the inner side of the housing wall, so that the projections 105a-105d are no longer visible when the door closer 200 is installed.
The door closing unit according to the invention includes the fastening plate 100 and the door closer 200. The door closing unit according to the invention is identified as a whole in
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2010 012 264.5 | Mar 2010 | DE | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP11/01426 | 3/22/2011 | WO | 00 | 10/26/2012 |
