EP3138441B1 - Damping device for damping the opening movement of a movable part of a piece of furniture - Google Patents

Description

The invention relates to a damping device for damping the opening movement of a movable furniture part, comprising a stationary base unit comprising a furniture body of a furniture and a movable base unit having the movable furniture part, wherein the movable base unit is movably arranged to the stationary base unit, and with a damper unit, the first and second, under execution of a damping function, relative to each other movable damper components, of which the first damper component is arranged on the one base unit and when approaching the movable base unit in its end position an impact between the second damper component and the other base unit takes place, wherein the damping function is triggered ,

The DE 20 2004 006 410 U1 discloses a retraction automatic with damping device for drawer pull-out guides. There is provided an automatic retraction mechanism having an elongated flat latch housing which is obviously secured to a profiled guide rail to be fastened to the side wall of a cabinet body. In the pawl housing a damper cylinder is mounted linearly displaceable, wherein the front end face of the damper cylinder is located on projections of the pawl member in abutment and wherein on the rear end wall a buffer spring is applied, which presses the damper cylinder to the projections. It is one from the Damper cylinder led out piston rod provided at the free end of a pawl member is arranged.

The DE 10 2012 111 551 A1 discloses a pullout guide with a guide rail and a movably mounted track on which a pusher is fixable, the track is movable from a closed position to a maximum open position and a damping device is provided which decelerates the track before reaching the maximum opening position, wherein the damping device comprises a linear pressure damper.

Damping devices for damping the opening and / or closing movement of movable furniture parts, such as drawers, doors or flaps, have long been known. It is known, for example, to dampen the retraction movement of a drawer into the closed position. In this case, a component moving along with the drawer strikes a damper component, for example a displaceable damper housing or a displaceable damper piston, thereby triggering a damping function. In the damping of the extension movement of the drawer in the open position, the same principle is usually used.

The damping devices used in this case always have relative to each other movable damper components, for example, as mentioned, a movable damper piston which is movably guided in a damper housing or a movable damper housing, which is movably guided to a damper piston. That is, it is a movable damper component and a relative to the furniture body stationary damper component used.

However, in confined spaces, it is often difficult to accommodate suitable damping devices. In particular, in the end position damping of a drawer during its opening movement, there is a need that the damping device is in the range of the drawer opening, so that the damping function is triggered only when the drawer enters its open position. However, there is the problem here just to accommodate damping devices due to limited space.

The object of the invention is to provide a damping device of the type mentioned above, whose application is increased over conventional damping devices, in particular, which is functionally reliable even in confined spaces.

This object is achieved by a damping device having the features of independent claim 1. Further developments of the invention are shown in the subclaims.

The damping device is designed such that the first damping component is mounted so movably on a holder having attached to the associated base unit stop means that it is displaceable upon impact from a standby position in a supported by stop means working position in which the damping function is executable, wherein the Base unit not associated with the first damper component comprises a driver element which upon opening displaces the first damper component from the ready position to the working position in which the driver strikes the second damper component and displaces it together with the first damper component, the latter from the ready position to the working position is relocated.

The damper component in question is thus initially shifted from the ready position to the working position before the damping function is executed. It is conceivable, for example, that the movable base unit of the damping device, when used to dampen the opening movement of a movable furniture part in the form of a drawer initially join in the movement of the drawer until shortly before the open position, without a damping function is triggered and then short on reaching the working position is triggered before reaching the fully extended open position of the drawer. For example, the damper unit of the damping device can first be displaced from the ready position to the working position as a whole, in which case the second damper component is moved relative to the first damper component to initiate the damping function in the working position. It is for example possible that the damper unit of the damping device extends at least partially from the drawer receiver, whereby in the subsequent damping a relatively large damping stroke is available and the drawer is almost completely retracted from the drawer receiver.

It is possible for the damper unit of the damping device to be arranged on the stationary base unit or alternatively on the movable base unit. However, the arrangement of the damper unit on the stationary base unit, for example on a carcass rail of a guide unit or on a furniture carcass of a piece of furniture, is preferred.

The first damper component is movably mounted on a holder attached to the associated base unit, which identifies stop means. In this case, the holder is multifunctional and serves on the one hand to guide the first damper component between the standby position and the working position and second, it defines the working position as a stop.

As already mentioned, it is particularly preferred to arrange the first damper component on the stationary base unit. Alternatively, however, it would also be possible to arrange the first damper component on the movable base unit. In this case, the first damper component would be moved during the movement of the movable furniture part.

The non-the first damper component associated, in particular movable base unit, has a driver element, which displaces the first damper component from the standby position to the working position when opening. In this case, the driver element thus comes in contact with the damper unit when opening the movable furniture part and causes the movement of the damper component from the standby position to the working position.

In a particularly preferred manner, the driver element triggers the damping function. It is therefore possible that the driver element in the working position of the first damper component causes a displacement of the first damper component relative to the second damper component, whereby a damping function is triggered.

The driver element impinges on the second damper component and displaces it together with the first damper component, the latter being displaced from the ready position to the working position.

It is therefore possible that the driver element in the working position of the first damper component for triggering the Damping function moves the second damper component relative to the first damper component.

In a further development of the invention, the damper unit is designed as a linear damper with mutually linearly movable damper components for triggering the damping function or as a rotary damper with mutually rotationally movable damper components for triggering the damping function.

In a further development of the invention, return means are provided for resetting the first damper component from the working to the ready position.

It is possible that the return means comprise at least one spring element whose spring force is the first damper component returns to the standby position as soon as the base unit not associated with the first damper component is out of contact with the first damper component.

Alternatively or additionally, it is possible for the restoring means to comprise a functional section of the base unit not assigned to the first damper component, which displaces the first damper component into the standby position during closing.

The invention further comprises a piece of furniture, with at least one movable furniture part, in particular a drawer, characterized by a damping device according to one of claims 1 to 12.

Figur 1

Eine perspektivische Darstellung eines bevorzugten Ausführungsbeispiels der erfindungsgemäßen Dämpfungsvorrichtung mit der ersten Dämpferkomponente in der Bereitschaftsstellung,

Figur 2

eine perspektivische Darstellung der Dämpfungsvorrichtung von Figur 1, wobei die erste Dämpferkomponente in die Arbeitsposition verlagert ist,

Figur 3

eine perspektivische Darstellung der Dämpfungsvorrichtungen gemäß Figur 1, wobei eine Dämpfungsfunktion eingeleitet ist und

Figur 4

eine perspektivische Darstellung der Dämpfungsvorrichtung von Figur 1, wobei die zweite Dämpferkomponente den maximalen Dämpfungshub zurückgelegt hat.

A preferred embodiment of the invention is illustrated in the drawing and will be explained in more detail below. In the drawing show:

FIG. 1

A perspective view of a preferred embodiment of the damping device according to the invention with the first damper component in the standby position,

FIG. 2

a perspective view of the damping device of FIG. 1 wherein the first damper component is displaced to the working position,

FIG. 3

a perspective view of the damping devices according to FIG. 1 , wherein a damping function is initiated and

FIG. 4

a perspective view of the damping device of FIG. 1 , wherein the second damper component has covered the maximum damping stroke.

The FIGS. 1 to 4 show a preferred embodiment of the damping device 11 of the invention. The damping device is shown here by way of example when used for damping the opening movement of a movable furniture part 12 in the form of a drawer and described.

The drawer (not shown) by means of a guide device relative to a furniture body (not shown) slidably mounted. The guide device comprises a plurality of guide units (not shown), of which two guide units are assigned to mutually opposite side edges of the drawer.

The guide units each have a carcass rail, which may be equipped, for example, as a bent sheet metal component. The carcass rail is fastened in a fixed position via suitable fastening means on an associated side wall of a drawer receiver formed in the furniture carcass. On the carcass rail, a middle rail (not shown) is displaceably mounted on which in turn a pull-out rail or rail is guided displaceably by means of bearing means. The drawer rail is assigned to the drawer and runs below the drawer bottom in the depth direction. The combination of carcase rail, center rail and pull-out rail is called full extension. However, it is conceivable to use guide units without middle rail.

The damping device 11 comprises a stationary base unit 13 having the furniture body of the furniture. The damping device 11 further comprises a drawer having the drawer movable base unit 14, wherein the movable base unit 14 is arranged to be movable relative to the stationary base unit 13.

The stationary base unit 13 has an accessory carrier 15, which has at least one mounting interface 16 for tool-free attachment to the furniture component and at least one attachment interface for attachment of accessories to the accessory carrier 15.

As in the FIGS. 1 to 4 shown, the accessory carrier 15 is formed as a flat body, for example in the form of a carrier plate. The accessory carrier 15 is expediently made of plastic. Advantageously, the accessory carrier 15 is a plastic injection molded part, with which it is often reproducible and can be produced in a simple and cost-effective manner.

In the example 2 shown, the mounting interface 16 is located on an upper side 18 of the accessory carrier 15. The mounting interface 16 has first and second holding means 19a, 19b, via which the accessory carrier 15 can be detachably fastened to a mounting section of an associated mounting bracket of the carcass rail.

The first and second holding means 19a, 19b overlap in the assembled state of the accessory carrier 15, the mounting portion on the mounting bracket.

The accessory carrier 15 has a transverse to the longitudinal extension slot 20 which is open to a longitudinal side of the accessory carrier 15 out. The slot 20 is formed by suitable demolding in the manufacture of the existing plastic material accessory carrier 15 with the same. The slot 20 diverges to the longitudinal side of the accessory carrier 15. In other words, the slot width of Slit 20 increases towards the longitudinal side of the accessory carrier 15 out.

The slot 20 separates the accessory carrier 15 into a first and a second carrier part 21a, 21b. The two carrier parts 21a, 21b are movable relative to one another such that the distance between the two holding means 19a, 19b for mounting the accessory carrier 15 on the associated mounting portion of the mounting bracket of the carcass rail with enlargement of the slot 20 can be increased. The two carrier parts 21a, 21b are connected together at the bottom of the slot 20 via a solid-state joint 22.

In the slot 20 spring means 23 are arranged, the spring force against the expansion of the slot 20 acts. The spring means 23 are integrally connected to the two support parts 21a, 21b. The spring means 23 comprise, in the example, two loop-shaped leaf springs 24a, 24b which are integrally formed at one end on the one and at the other end on the other support part 21a, 21b. The leaf springs 24 a, 24 b each have a loop portion 25 which is located in the slot width direction approximately in the center of the slot 20. The loop portions 25 of the leaf springs 24a, 24b face each other.

As in the FIGS. 1 to 4 illustrated, the accessory carrier 15 has a plurality of attachment interfaces 17, one of which is on the longitudinal side of the accessory carrier 15, which is opposite to the longitudinal side, to which the slot 20 opens toward, is formed. The attachment interface 17 on the longitudinal side of the accessory carrier 15 has a substantially in the entire length of the accessory carrier 15 extending holder in the form of a guide bar 26, on the a damper unit 27 of the damping device 11 is guided linearly movable. The guide rail 26 forms a sliding guide for guiding the damper unit 27 on the accessory carrier 15. The guide rail 26 has a guide rail 28 which forms the outer longitudinal end of the accessory carrier 15. In the direction of the center of the accessory carrier 15 is located on the top and bottom of the accessory carrier 15 each a parallel to the guide rail 28 extending guide groove 29th

As particularly shown in the figures, the damper unit 27 has a first damper component 30 and a second damper component 31, which are movable relative to each other.

In the example shown, the first damper component is displaceably guided on the guide rail 26 of the accessory carrier 15 between a ready position 32 and a working position 33.

For this purpose, the first damper component 30 has a slide-like guide element 34, which encompasses the guide rail 28 on its upper and lower sides and dips into the guide grooves 29 arranged behind it on the upper and lower sides of the accessory carrier 15. The carriage-like guide member 34 is, as the synopsis of FIGS. 1 to 4 shows, between the standby position 32 and the working position 33 linearly movably guided on the guide rail 26 of the accessory carrier 15.

The first damper component 30 further has an elongated base unit 35, which is laterally attached to the carriage-like guide member 34, in particular integrally connected thereto. The base unit 35 is thus moved along during the movement of the guide element 34. The longitudinal extension the base unit 35 is significantly larger than that of the guide element 34.

The base unit 35 has an in the longitudinal direction of the base unit 35 extending particular semi-cylindrical damper mount 36 for receiving and guiding the second damper component 31. The damper seat 36 has a transversely to the longitudinal extension of the damper recording aligned end stop 37, which is formed by a closure wall 38.

As in particular in FIG. 1 shown, the guide rail 26 has stop means 39 which define the working position 33 of the first damper component 30. To the stop means 39 count on the guide rail 28 at its upper and lower edges formed notches 40 which are arranged in pairs, that is, on the upper edge of the guide rail 28 has two notches, which are arranged spaced from each other in the longitudinal direction of the guide rail and of which one in the region of the front and the other is arranged in the region of the rear end of the guide rail, and which are respectively associated with the lower edge of the guide rail 28 corresponding notches 40. The notches 40 correspond to projections formed on the carriage-like guide member 34 (not shown).

The first damper component 30 further comprises components of a linear damper 41, namely a damper piston assembly 42, with a piston rod 43, which is attached on the one hand to the end wall 38 of the base unit 35 and is stationary with respect to the base unit 35. At the other end of the piston rod 43 is a damper piston 44. The damper piston 44 is received in a damper housing 45, which forms the main component of the second damper component 31. The damper housing 45 is guided in the damper mount 36 linearly movable relative to the damper piston assembly 42 with piston rod 43 and damper piston 44.

As in particular in FIG. 1 1, the movable base unit 14 has the drawer, at the drawer rear wall of which a driver element 46 projecting beyond the drawer bottom is arranged.

When opening the drawer, the driver element 46 comes into contact with the damper housing 45 of the second damper component 31 on the stationary base unit 13. This situation is in FIG. 1 shown. Upon impact of the driver element 46 on the rear end side of the damper housing 45, the complete damper unit 27 and thus in the standby position 32 (FIG. FIG. 1 ) located first damper component 30 with the base unit 35 and the damper piston assembly 42 shifted by the slide-like guide member 34 is linearly displaced on the associated guide rail 28 of the guide rail 26. The force that has to be expended for the displacement of the complete damper unit 27 is less than that which is required for the displacement of the damper housing 45 with respect to the damper piston arrangement 42. Therefore, 45 no damping function is triggered on impact of the driver element 46 on the rear end side of the damper housing, but the damper housing 45 is displaced together with the damper piston assembly 42 and the base unit 35 of the first damper component 30.

The first damper component 30 with the base unit 35 and the damper piston assembly 42 becomes the standby position 32 displaced into the working position 33, which is predetermined by the rear notch pair in the displacement direction.

It is characteristic that the base unit 35 in the working position 33 of the first damper component 30 with the damper piston arrangement 42 has moved out of the drawer receiver. So far, a damping function has not taken place and the drawer can be moved almost to the full open position until the damping function begins.

When the working position 33 of the first damper component 30 is reached, then the damper housing 45 is then moved relative to the damper piston assembly 42, that is, a damper function is triggered. The damper housing 45 moves while, as in the FIGS. 3 and 4 shown in the damper receptacle 36, wherein the damper piston 44 received in the damper piston 44 by displacement of damping medium, in particular hydraulic oil or air, generates a damping function, so that the retraction of the drawer is slowed down and damped in the open position.

When retracting the drawer, the rear of the drawer front comes into contact with the first damper component 30, whereby it is reset by the sliding guide of the carriage-like guide member 34 on the guide rail 28 from the working position 33 to the standby position 32. Previously, the damper housing 45 has already been reset by loss of contact with the driver element 46 in the starting position.

Claims (9)

1. Damping device for damping the opening movement of a movable furniture part (12), with a stationary base unit (13) which has a furniture carcass of a piece of furniture, and a movable base unit (14) which has the movable furniture part (12), wherein the movable base unit (14) is mounted movably relative to the stationary base unit (13), and with a damper unit (27) which has first and second damper components (30, 31), movable relative to one another to perform a damping function, of which the first damper component (30) is mounted on the one base unit (13, 14) wherein, when the movable base unit (14) approaches its end position an impact takes place between the second damper component (31) and the other base unit (13, 14), wherein the first damper component (30) is movably mounted on a holder (26), fastened to the assigned base unit (13, 14) and having stop means (39), in such a way that it may be displaced on impact from a standby position (32) into a working position (33) supported by the stop means (39), in which the damping function may be executed, wherein the base unit (13, 14) not assigned to the first damper component (30) has a driving element (46) which, on opening, displaces the first damper component (30) from the standby position (32) into the working position (33), by means of the driving element (46) striking the second damper component (31) and displacing the latter together with the first damper component (30), wherein the latter is displaced from the standby position (32) into the working position (33).
2. Damping device according to any of the preceding claims, characterised in that the first damper component (30) is mounted on the stationary base unit (13).
3. Damping device according to claim 1 or 2, characterised in that the driving element (46) triggers the damping function.
4. Damping device according to any of the preceding claims, characterised in that the driving element (46) in the working position (33) of the first damper component (30) moves the second damper component (31) relative to the first damper component (30).
5. Damping device according to any of the preceding claims, characterised in that the damper unit (27) is in the form of a linear damper with damper components capable of linear movement towards one another to trigger the damping function, or as a rotation damper with damper components capable of rotary movement towards one another to trigger the damping function.
6. Damping device according to any of the preceding claims, characterised by resetting means for resetting the first damper component (30) from the working position into the standby position (33, 32).
7. Damping device according to claim 6, characterised in that the resetting means have at least one spring element, the spring force of which resets the first damper component (30) into the standby position (32) as soon as the base unit (13, 14) not assigned to the first damper component (30) is out of contact with the first damper component (30).
8. Damping device according to claim 6 or 7, characterised in that the resetting means include a function section of the base unit (13) not assigned to the first damper component (30) which, on closing, displaces the first damper component (30) into the standby position (32).
9. Piece of furniture with at least one movable furniture part, in particular a drawer, characterised by a damping device (11) according to any of claims 1 to 8.

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