DE202004001791U1 - Damping/absorbing device for reducing the speed of moving material masses like furniture drawers, doors and flaps moves an absorber tab in and out of an absorber casing - Google Patents

Abstract

An absorber tab (1) moves in and out of an oblong sleeve/tubular damper/absorber casing (5), in which a spring steel absorber element with flexible resetting force fits to take the shape of a spiral flat spring. The absorber element can be fully or partly uncoiled or stretched by the absorber tab as this enters into the casing.

Description

The invention relates to a damping device for braking moving masses, e.g. B. furniture drawers, furniture doors, furniture flaps or like.

State of the art

For example, furniture drawers should Do not hit the end of the stroke hard, on the other hand but also do not spring back or move back from the end position. Rather, the aim is that in the end position with a small holding force against automatic opening for example vibrations are recorded.

From JP 2001-355666 (P2001-355666A) a damping device previously known, which, however, a relatively large number of individual parts has, which results in relatively high manufacturing and assembly costs result. Moreover has the damping device a fairly high design due to the large number one above the other arranged individual parts. However, this space is often mobile furniture parts such as drawers, flaps, drawers or cabinet doors are not available. Here damping devices to be provided may only take up little space and incur minimal costs. Because of the risk of pollution, there should also be no indoor air like greasy cooking fumes and no fluid as a damping agent in damping devices are used. This is particularly forbidden for furniture that be used in the food sector.

The EP 1 221 559 A2 describes a braking and damping device for moving furniture parts, which also has a large number of different components, all of which have to be processed. The large external dimensions, which are due to the circular design, reduce the possible uses of such damping devices. The use of indoor air also causes other disadvantages, which can lead to the early contamination of moving individual parts and thus render them unusable, particularly with greasy cooking vapors. Another disadvantage is that there is a restoring force due to a restoring spring when the end position of movable furniture parts is reached, so that, for example, drawers can spring out of a body of a desk or the like. Furthermore, no holding force is generated in the end position of movable furniture parts such as drawers or the like, so that a separate holding device is required, which causes additional costs.

From the EP 1 241 374 A1 and the DE 202 16 262 U1 damping devices are known in each case, which also have the disadvantages described above. In addition, a fluid is required for damping instead of indoor air. This fluid is sealed with an elastic seal to prevent leakage.

The US 6 578 832 B2 also shows a damping device for a glove box in automobiles, which has the following disadvantages: The device is also relatively large. Room air is also required for the damping process. No holding force is generated in the end position.

The JP 2002 242978 (P2002-242978A) also describes and shows a damping device for furniture parts, a damping device being used for damping, the rotatable toothed pinion of which meshes with teeth of a toothed rack. The rotary damper is filled with a fluid. The teeth of the rack or pinion can break when inserted quickly. A rotary damper with fluid and seal is also relatively expensive.

The DE 201 07 426 U1 describes and shows a damping device for furniture parts, which requires a relatively large amount of space in a cylindrical design. Indoor air or a fluid is required for steaming, which results in the disadvantages already described above. A restoring force is generated at the end of the stroke so that, for example, a drawer can be moved out of the body by a certain amount after being pushed in. This means that there is no holding force at the end of the stroke. Therefore, a special holding device is required, which increases the cost.

The DE 203 02 120 U1 and the DE 203 02 121 U1 describe a liquid damper, in particular for movable furniture parts, with a cylinder, a piston which can be moved linearly in the cylinder with a piston rod, and with an elastic displacement element, the displacement element being designed as a slotted jacket which surrounds the piston rod. The damping device has many individual parts, which increases costs, not to mention the relatively large transverse dimensions due to the cylindrical design. In addition, no holding force is generated at the stroke end, so that the mass to be braked, for example a drawer, can spring back.

From the DE 102 54 375 C1 A damping device for damping the swiveling movement in a swiveling area, limited by two end positions, of a piece of furniture piece pivotably mounted relative to a stationary piece of furniture part is known, by means of a damping element, the damping element comprising a cylinder-piston unit. For this purpose, at least one actuating element is arranged on the piece of furniture parts not supporting the cylinder-piston unit and, when the damping is activated, is coupled to the cylinder-piston unit to form a sliding wedge gear. In addition, both the actuator and the cylinder-piston unit are part of a gel kes. This device also has numerous individual parts.

The JP 2002349622 also shows a damper with a circular cross section, which is relatively large and has numerous individual parts with the disadvantages described above.

The DE 203 11 217 U1 describes an air damper with a cylinder housing in which a piston located at the end of a piston rod is slidably guided between a cover that closes the cylinder body and a base part, whereby the piston in the cylinder chamber, which has a sealing element on the wall, compresses air in the cylinder space and thus in the direction of insertion Piston rod moving towards the bottom part is damped, the piston containing in a groove a single-acting sealing ring and a two-component spraying method, which can be bulged by the compressed air and which has an additional frictional braking effect on the cylinder wall. Here too, a fluid is required again, and numerous individual parts are required that have to be machined, quite apart from the relatively large transverse dimensions, which often do not allow installation in tight spaces on the furniture.

task

The innovation is based on the task, one damping device for braking moving masses, for example furniture drawers, furniture doors, furniture flaps or the like, to create the simplest design with few individual parts and in the end position of the moving furniture without additional Holding device a certain holding force on the movable mass exerts so that they don't move back or spring back can.

solution

The task is covered by the protection claim 1 reproduced characteristics solved.

Some advantages

The innovation concerns a damping device, which are extremely simple assembled, inexpensive is to manufacture and only very little because of its very flat design Space needed so that it can also be arranged between the drawer and the cabinet without that the conventional Dimensions of the furniture to change would. In the end position, the movable furniture part, for example a drawer, no restoring force exercised. Rather, it arises at the end of the damping path a low holding force due to adhesion. For the damping process itself neither room air nor a damping fluid needed so that the damping devices of the new kind can also be used in the food sector. Damping devices of the new type are accordingly also not polluted by the air in the room and therefore cannot be theirs Lose function.

In principle, the innovation just a case and a flat spring steel coil spring needed by the damping tongue when entering the housing, that is, during the braking process. This creates proportional an increasing damping force for the braking stroke, which can drop towards zero at the end of the stroke. Due to the preload the scroll spring and possibly also its thickness and the one between the damping housing and the damping tongue on the other hand, existing play creates a holding force through frictional engagement between damping tongue on the one hand and roller spring on the other, so that a certain at the stroke end Holding force on the movable furniture part, for example a drawer, a flap or drawer. When moving back the movable furniture part, for example a drawer, the roller spring then rolls again in their original position and is again available when braking again Available. In principle, therefore, only three parts, namely the damping tongue, the damping housing and the scroll spring needs so that there is a very simple, robust, consisting of a few individual parts Construction results.

More inventive refinements

Further inventive configurations are in the protection claims 2 to 7 described.

The damping device according to protection claim 2 describes a preferred embodiment of the innovation.

Will be an embodiment according to protection claim 3 chosen, this is how the roller spring during the damping process completely stretched.

According to protection claim 4 that is damping element with a length section attached to the damper housing. This suggests Protection claim 5 a structurally simple solution.

In the embodiment according to protection claim 6 can the damping tongue the damping element also stretch slightly in the end position, as the tongue will not pass through a scraping process, but with a sliding process, i.e. frictionally touching the end of the tongue comes. Moreover allows the beading a targeted transmission of the Holding force on the damping tongue on a relatively long lever arm, measured from the remote attachment point of the damping element up to the damping housing to the bead-like shape.

Protection claim 7 describes a damping device, which is particularly advantageous Drawers or the like can be used.

In the drawing, the innovation is - partly schematic - for example illustrated. Show it:

1 a drawer with damping devices designed according to the innovation, in a perspective view;

2 a damping device in the view with the damping tongue inserted into the damping housing, without furniture;

3 a top view too 2 ;

4 a front view for 3 ;

5 a damping tongue in the view;

6 a longitudinal section through a damping housing with rolled-up damping element;

7 a representation, partly in longitudinal section, partly in the view, in which the damping tongue according to 5 according to the damping housing 6 has penetrated and the damping element has rolled up resiliently (end position).

With the reference symbol 1 is a damping tongue designated, which can be rectangular or square in cross-section, or also polygonal, or circular if necessary. The damping tongue 1 has one or more mounting holes 2 on, through the fasteners 3 , for example screws, can reach through to the damping tongue 1 to a movable mass of furniture, for example on a drawer 4 , to fix. In 1 is the damping tongue 1 with two fasteners 3 , e.g. B. by screws, rivets, pins, split pins, or the like on a side wall of the drawer 4 attached. On the opposite side of the drawer 4 can have a damping tongue that is the same in terms of shape and dimensions 1 be arranged to enable a uniform, distortion-free or torsion-free braking of the movable mass during the braking process.

As you can see from the drawing, the damping tongue 1 In the embodiment shown in the drawing, it has a rectangular cross section and a very flat design, so that it is a drawer in the gap between the body of a piece of furniture and between the movable mass without changing the usual structural dimensions 4 , can accommodate.

Any damping tongue 1 is a sleeve-shaped, elongated damping housing 5 assigned that a damping space 6 has, in which the respective damping tongue 1 suitable, but with play, can intervene.

The damping tongue 1 is on their front, the damper housing 5 facing end section, at 7 , tapering in the direction of insertion.

In the damper housing 5 is a damping element 8th arranged in the form of a roller spring, which at its out 6 apparent untensioned position a rolled-up section 9 and an attachment portion 10 has, which through an opening in a side wall of the associated damping housing 5 passed and here in a suitable manner, for example by spot welding, soldering, riveting or screwing, in one piece with the associated damping housing 5 connected is. The damping element 8th with its unrolled length largely nestles against the inner wall 11 of the damping housing 5 on or runs closely to this.

Will the moving mass of the furniture, for example the drawer 4 , inserted into the body, the damping tongues 1 in the relevant damping housing 5 and roll the roller spring made of spring steel tape 8th in the out 7 stretched position. How out 7 is recognizable, the scroll spring 8th completely stretched and is then in the gap between the damping tongue 1 and inner wall 11 of the damping housing 5 , The mass 4 braked.

The damping element 8th has a bead-shaped at its free end; towards the damping tongue 1 end portion bent at a radius or the like 12 with which the scroll spring 8th in its stretched state against a side wall of the associated damping tongue 1 supports and thus a holding force on the damping tongue 1 to the assigned moving mass 4 , in the present case a drawer, so that it cannot spring back out of the body.

The damper housing 5 shows at the 1 Embodiment shown several, in the present four openings in areas, of which only one with the reference numeral 13 respectively. 14 is designated. All of these breakthroughs 13 . 14 can be of the same size. Suitable fastening elements (not shown), for example screws or rivets, reach through the openings with which the damping housing in question 5 is attached to the associated furniture, for example the body of a desk.

The in the protection claims and described in the description and apparent from the drawing Characteristics can both individually and in any combination for the realization the innovation be essential.

bibliography

• DE 102 54 375 C1 DE 201 07 426 U1 DE 202 16 262 U1 DE 203 02 120 U1 DE 203 02 121 U1 DE 203 11 217 U1 JP 2001-355666 (P2001-355666A) JP 2002-242978 (P2002-242978A) JP 2002 - 349622 A EP 1 221 559 A2 EP 1 241 374 A1 US 6,578,832 B2

1

damping tongue

2

mounting hole

3

Fastener, Screw, rivet, pin, or the like

4

Dimensions, movable, drawer, door, Lad, shut up

5

damping housing

6

damping space

7

end the damping tongue, tapered

8th

Damping element, Coil spring, steel spring, steel spring band

9

Section, wound up, rolled up

10

attachment section

11

inner wall of the damping housing 5

12

end portion, goose-necked, of the damping element 8, expression

13

By refraction, drilling

14

","

Claims (7)

Damping device for braking moving masses ( 4 ), e.g. B. furniture drawers, furniture doors, furniture flaps, or the like, with an elongated, sleeve-shaped or tubular damping housing ( 5 ), a damping tongue that can be moved in and out of the housing ( 1 ), one in the damping housing ( 5 ) arranged, in the manner of a wound, flat roller spring (spiral spring) made of spring steel damping element ( 8th ) with resilient restoring force, which is caused by the damping tongue ( 1 ) when they enter the damping housing ( 5 ) can be completely or partially developed and stretched. Damping device according to claim 1, characterized in that when in the damping housing ( 5 ) penetrated damping tongue ( 1 ) the damping element ( 8th ) non-positive on the damping tongue ( 1 ) is applied and a holding force on the movable mass ( 4 ) can be exercised. Damping device according to claim 1 or 2, characterized in that after penetration of the damping tongue ( 1 ) in the damping housing ( 5 ) the damping element ( 8th ) is completely stretched and between the inner wall of the damping housing ( 5 ) and the damping tongue ( 1 ) with the major part of its axial extension is non-positively. Damping device according to claim 1 or one of the subsequent claims, characterized in that the damping element ( 8th ) with a length section on the damping housing ( 5 ) is attached. Damping device according to claim 4, characterized in that the damping element ( 8th ) with a length section one in the damping housing ( 5 ) penetrates the opening provided and on the outside of the damping housing ( 5 ) is attached. Damping device according to claim 1 or one of the subsequent claims, characterized in that the damping element ( 8th ) at its extreme (inner) end towards the damping tongue ( 1 ) projecting, bead-like shape bent according to a radius or the like ( 12 ) having. Damping device according to claim 1 or one of the subsequent claims, characterized in that the damping housing ( 5 ) is arranged on a wall of the furniture while the damping tongue ( 1 ) on the moving mass ( 4 ) is located.