DE20311481U1 - Impact buffer for furniture has round plastic washer with central fixing hole - Google Patents

Abstract

The impact buffer (1) for furniture doors or drawers is formed as a plate (4) with a sealing edge (9). The plate has a central fixing hole. The impact buffer is fixed by a nail or screw (2). The nail can have a rounded head and lateral retaining ribs. The buffer can be made of soft plastic.

Description

Stop buffers, especially for furniture parts

The invention relates to a stop buffer, in particular for furniture parts such as furniture doors or drawers according to the preamble of the independent protection claim 1 or 7.

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Stop buffers are already known in numerous forms from the state of the art and are used in particular in furniture doors or drawers, which are intended to dampen the closing of the furniture door or drawers, whereby the stop buffer is located on one of the furniture parts (furniture body or furniture door or back of the front panel of the drawer).

Various methods of use are known from the state of the art, for example the stop buffer can be glued to the furniture part. The disadvantage of this is that gluing is often unsuitable for this and the stop buffer

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Postal checking account Munich 414848-808 (bank code 70010080)

then over time it migrates across the furniture and leaves behind adhesive marks, which is not particularly attractive visually.

Another method of use is known from DE 198 55 700 A1, in which a bushing with a buffer element is inserted into a pre-drilled countersunk hole in a piece of furniture so that the stop buffer is properly fixed in the piece of furniture. The disadvantage, however, is that the piece of furniture must be pre-drilled. For a furniture manufacturer, this means an additional work step that entails additional costs.

DE-GM-8130405 describes a damping element for furniture, consisting of an anchoring pin embedded in a hole in the furniture material with a profiled damping head that protrudes above the surface of the furniture, with the profile of the damping head being curved outwards in a plate shape. The disadvantage is that when a piece of furniture that is to be slowed down hits it, the damping head and the air trapped in its outer profile recess can only be deformed to a small extent, since the material can hardly deflect radially under axial load. If the deformation forces are too high (penetration), the damping element can be damaged. In addition, the hole for the anchoring pin must be made in a separate work step. Cleaning the edge of the damping head is difficult because it cannot or can only be lifted off the furniture with difficulty.

The object of the present invention is to design and develop a robust stop buffer, in particular for furniture parts, in such a way that it has a suitable damping effect and can be easily and quickly mounted on the furniture part, that it remains permanently fixed to the furniture part in the original mounting position during use and that the cleaning of the furniture part is simplified.

This problem is solved with a stop buffer having the features of independent claim 1 or 7.

This task is solved by attaching the stop buffer to the furniture part using a quick fastening element, e.g. nailed or riveted, etc.

and that it contains an open elastic part which, once fitted, forms an air cushion to provide particularly soft cushioning.

The processing or assembly of the stop buffer is preferably carried out with pre-belted or magazined material using electric or pneumatic setting machines or by means of a firing device of an air pressure machine (similar to a stapler).

The nail preferably has a wide, round head so that there is sufficient contact surface between the stop buffer and the furniture part. Furthermore, the nail preferably has barb-like tips or rings on the sides so that the friction forces between the casing of the nail shaft and the furniture material are increased.

The elastic part of the stop buffer is preferably made of soft plastic so that it can deform during processing and allows for soft buffering. The manufactured, unassembled form of the elastic part of the stop buffer is designed in such a way that it has a light, humped ring with a circumferential outer sealing surface that, when placed under pressure, first rests against the piece of furniture and can then deform sideways.

Due to the nail pressure in the direction of the furniture part, the contact surface of the elastic part of the stop buffer to the furniture part in the area of the nail head is sealed, as well as the contact ring between the sealing edge and the furniture part.

This creates a large, bumpy ring on the elastic part of the stop buffer, under which an air cushion forms. If the furniture part with the stop buffer is impacted by another furniture part, the elastic part of the stop buffer made of soft plastic will deform (become flatter) at the sealing edge, but will still remain tight.

In this case, the stop buffer achieves its damping function and has the desired advantages: it remains permanently fixed in position on the furniture part and is easy, quick and inexpensive to install and clean.

In the following, the invention is described in more detail using two embodiments, which, however, are to be understood only as examples and not as limiting.
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Show it:

Fig. 1 : a view from above of the stop buffer according to the invention

Fig. 2: a sectional view AA of Fig. 1 and the inventive

Buffer in its manufactured form

Fig. 3 : a sectional view of a first example of a strapping

Fig. 4 : a sectional view of a second example of a strapping

Fig. 5 : a sectional view of a second example of a stop buffer

In Fig. 1 and Fig. 2, the stop buffer 1 according to the invention is provided with a nail 2 that is sunk into the furniture part 3. The nail 2 penetrates through an approximately central opening 13 in the middle part 14 of the elastic part 4 of the stop buffer 1. The nail 2 can be subsequently introduced into this opening 13 in the elastic part 4 after the elastic part 4 has been manufactured, e.g. during manufacture or assembly, or during the manufacture of the elastic part 4 itself and, for example, can be injected, cast or vulcanized there.

In Fig. 2, the stop buffer 1 with the elastic part 4 is shown in its unassembled, originally manufactured form 4 (dash-dotted line), in its assembled form 4' (solid line) after the nail 2 has been inserted into the furniture part 3, and in the deformed state 4" (solid line) during impact with a furniture part. The elastic part 4 is designed like a plate with a sealing edge 9. In the unassembled form, the elastic part 4 is flatter in the middle in the bead area 12 than the assembled elastic part 4'. The elastic part 4 in its manufactured unassembled form 4 is provided with a nail 2 in its middle. The nail pressure presses the middle of the elastic part 4 of the stop buffer 1 onto the furniture part 3 and the contact surface 8 of the middle part 14 presses sealingly against the furniture part 3. The Elastic part 4 of the stop buffer 1 is also deformed under pressure and a tight contact ring is formed on the sealing edge 9. This creates

an air cushion in a compression space 7 between the sealing edge 9 and the contact surface 8 and the furniture part 3.

Between the central contact surface 8 and the peripheral outer sealing edge 9, a bead 12 is formed, under which the compression space 7 with the air cushion is located, which additionally acts as a damping between the furniture parts 3, as does the elastic material of the elastic part 4' itself and the friction when the sealing edge 9 moves radially outwards on the furniture part 3. When a furniture part impacts downwards in the axial deformation direction 17 on the furniture part 3, the bead 12 is deformed, the air in the compression chamber 7 is compressed and the outer sealing edge 9 of the elastic part 4' moves radially outwards in the radial deformation direction 16 against the frictional force. The elastic part 4' rolls over the sealing edge 9 and the inner curved sealing surface 15 on the furniture part 3 and the entire bead 12 with curved sealing surface 15 and sealing edge 9 slides radially outwards in the radial deformation directions 16. The elastic part 4" thus has an axially flattened bead 12 and an enlarged outer diameter D" for a short time after impacting the furniture part to be braked and resulting deformation in the radial deformation directions 16 and in the axial deformation direction 17, whereby the air cushion 7 is compressed in the still sealed interior of the bead 12. The outer diameter D of the unmounted elastic part 4 is larger than the outer diameter D' of the mounted elastic part 4', but smaller than the maximum outer diameter D" of the deformed elastic part 4" under maximum permissible load in direction 17.

The nail 2 has a round, broad head 5 and lateral, barb-like tips 6 or rings.

In Fig. 3 and Fig. 4 examples of taping for efficient processing are shown.
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In Fig. 3, the stop buffers in their manufactured form 4 form the belt, whereby the stop buffers are each connected at their sealing edge 9.

In Fig. 4, an adhesive belt is shown on the nails 2, preferably on the nail tips.

Figure 5 shows a second embodiment of the stop buffer 1 according to Figures 1-4, whereby this stop buffer 18, in contrast, has a radially inward-facing tip 9 which moves radially inward in the radial deformation direction 19 during the deformation of the elastic part 4' (left half of the image) into the shape according to 4" (right half of the image). While in the first embodiment according to Figures 1-4 the stop buffer 1 deforms mainly by moving radially outward in the radial deformation direction 16 and thereby compresses the air cushion 7, the stop buffer 18 compresses the air cushion 7 mainly by moving axially downward in the axial deformation direction 17, since the radial, inward-facing deformation direction 19 is limited by the tip 19 abutting against the central part 14.

The curvature 20 of the arcuate sealing edge 9 of the stop buffer 18 according to Figure 5 is therefore directed radially inward towards the central part 14, in contrast to the stop buffer 1 according to Figures 1-4, where the curvature 15 is directed radially outward away from the central part 14.

The overall result is a stop buffer 1, 18 with variable damping characteristics depending on the dimensions and choice of material, whereby the stop buffer is quick and easy to install and remains permanently in the position once installed.

A convenient cleaning option is provided by the open plate shape of the stop buffer, which is only attached centrally to the furniture part via the nail 2 and can therefore be easily cleaned even under the sealing edge 9 of the stop buffer.

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Drawing legend

1. Stop buffer

2. Nail

3. Furniture part

4. Elastic part in manufactured, unassembled form, 4' in assembled state and 4" in deformed state

5. Nail head

6. lateral barb-like tips 7. compression space with air cushion

8. Contact surface

9. Sealing edge of 4 and 4' 10. Belt

11. Adhesive belt 12.Bead 13.Central opening

14. Middle section

15. Curvature radially outward from

16. radial deformation directions of

17. axial deformation direction of 1 and

18. Stop buffer

19. radial deformation directions of

20. Curvature radially inward from

Claims (15)

1. Stop buffer ( 1 ), in particular for furniture parts such as furniture doors or drawers, characterized in that the stop buffer in its manufactured form ( 4 ) is designed like a plate with a sealing edge ( 9 ) and that it is fixed in its center ( 14 ) to the furniture part ( 3 ). 2. Stop buffer ( 1 ) according to claim 1, characterized in that the stop buffer ( 1 ) is fastened in the furniture part ( 3 ) with a nail ( 2 ) or a screw. 3. Stop buffer ( 1 ) according to claim 1 or 2, characterized in that the nail ( 2 ) has a round nail head ( 5 ) and/or lateral tips ( 6 ) or rings. 4. Stop buffer ( 1 ) according to one of claims 1 to 3, characterized in that a compression space ( 7 ) with an air cushion is present between a bead ( 12 ) and the furniture part ( 3 ), wherein the bead ( 12 ) of the stop buffer ( 1 ) rests on the furniture part ( 3 ). 5. Stop buffer ( 1 ) according to one of claims 1 to 4, characterized in that the stop buffer ( 1 ) is made of soft plastic. 6. Stop buffer ( 1 ) according to one of claims 1 to 11, characterized in that the stop buffer ( 1 ) is belted or stored in a magazine. 7. Stop buffer ( 1 ), in particular for furniture parts such as furniture doors or drawers, with a fastening part ( 2 ) for fastening to a first element ( 13 ) and with an elastic part ( 4 ) for springing/damping the relative movement between the first ( 13 ) and a second element towards one another, characterized in that the elastic part ( 4 ) is plate-shaped and has a central part ( 14 ) arranged on the fastening part ( 2 ), to which an intermediate bead ( 12 ) adjoins on the outside, which opens into a circumferential, outer sealing edge ( 9 ) which, after assembly, lies essentially airtight on the first element ( 13 ), whereby the bead ( 12 ) and the sealing edge ( 9 ) move both radially and axially when acted upon by the second element. 8. Stop buffer ( 1 ) according to claim 7, characterized in that after the stop buffer ( 1 ) has been assembled, a compression chamber ( 7 ) filled with air is formed within the outer sealing edge ( 9 ) and at least below the intermediate bead ( 12 ) and the first element ( 13 ), in which this air is compressed in a movement-damping manner during the cushioning of the movement of the first ( 13 ) or second element and thus during the deformation of the elastic part ( 4 ). 9. Stop buffer ( 1 ) according to claim 7 or 8, characterized in that the fastening element ( 2 ) creates a positive connection between the stop buffer ( 1 ) and the first element ( 13 ) and is a nail, a rivet, a wire or a screw with a self-tapping thread. 10. Stop buffer ( 1 ) according to one of claims 7 to 9, characterized in that the fastening element ( 2 ) has an enlarged head ( 5 ) and/or barb-like tips ( 6 ) or rings in the shaft part. 11. Stop buffer ( 1 ) according to one of claims 7 to 10, characterized in that the elastic part ( 4 ) of the stop buffer ( 1 ) is made of plastic. 12. Stop buffer ( 1 ) according to one of claims 7 to 11, characterized in that the elastic part ( 4 ) of the stop buffer ( 1 ) is rotationally symmetrical. 13. Stop buffer ( 1 ) according to one of claims 7 to 12, characterized in that the elastic part ( 4 ) of the stop buffer ( 1 ) is circular, elliptical, square, rectangular, triangular or polygonal in the base area. 14. Stop buffer ( 1 ) according to one of claims 7 to 13, characterized in that the fastening element ( 2 ) has a head ( 5 ) which is integrated in the middle part ( 14 ) of the elastic part ( 4 ), so that after assembly a lower contact surface ( 8 ) of the middle part ( 14 ) rests sealingly on the first element ( 13 ). 15. Stop buffer ( 1 ) according to claim 14, characterized in that at least the head ( 5 ) of the fastening element ( 2 ) is injected, cast, vulcanized, glued or clamped in the middle part ( 14 ) of the elastic part ( 4 ).