EP2649906A2 - Device for opening and closing a movable furniture part - Google Patents

Abstract

The device (11) has an ejection unit (18) which presses the movable furniture component (12) for a predetermined distance and then ejects the movable furniture component. A damper equipped with a damping device, is integrated into the ejection unit. The damper is provided for damping the closing movement of the movable furniture component, when the movable furniture component is moved into the closed position. Independent claims are included for the following: (1) movable furniture component; and (2) furniture.

Description

The invention relates to a device for opening and closing a movable furniture part, in particular drawer, door or flap, with an ejection unit, via which the movable furniture part a predetermined distance can be pressed and then ejected.

Such a device is for example from the WO 2006/066774 A1 known. The closing and opening device described therein is intended for drawer pull-out guides, which are in turn equipped with a guide rail to be fastened to a cabinet wall of a piece of furniture and a sliding rail mounted on the drawer, possibly with the intermediary of a middle rail. The closing and opening device comprises a touch-latch mechanism having a pivotally mounted on the end of a coupling rod lever on which a control projection is formed, which engages in a formed like a heart cam cam, whereby the coupling rod in two in its longitudinal direction locked positions can be locked. This locking takes place by means of a coil under compression pretensioned coil which tries to push the coupling rod from the interior of a housing. By inserting the coupling rod is the tax advantage pushed out of the respective detent position of the control cam, whereby the drawer is ejected.

In such ejection units, there is the problem that in a dynamic closing operation, an unintentional triggering (so-called rebound effect), the ejection unit can take place, whereby the movable furniture part, such as drawer, is extended again.

In a dynamic closing of the movable furniture part may cause another problem:

If the movable furniture part is closed with more energy than necessary to effect a locking of the ejection unit, it may happen that despite the ejection unit being locked, components formed by the excess energy and the inertia of the movable furniture part on the movable furniture part or its guide Components of the locked ejection unit are demolished.

Finally, such devices should be suitable for an emergency opening in which the movable furniture part can be opened without activating the touch-latch function of the ejection unit from the closed position, with the ejection unit locked, with corresponding components moving along with the movable furniture part in a simple manner to separate from the components of the ejection unit.

The object of the invention is therefore to provide a device for opening and closing a movable furniture part of the type mentioned above, which is reliable and easy to handle and with which in particular can avoid the problems described above.

This object is achieved by a device for opening and closing a movable furniture part with the features of independent claim 1 and by a device for opening and closing a movable furniture part having the features of independent claim 10. Further developments of the invention are illustrated in the corresponding subclaims.

The device according to the invention according to claim 1 is characterized in that a damping device equipped with at least one damper is provided for damping the closing movement of the furniture part when entering the closed position.

The equipment of the device with a damping device does not seem sensible at first glance, since the ejection unit is charged when closing the movable furniture part, so that their stored ejection energy is provided in the subsequent activation. In general, the ejection unit is equipped for this purpose with spring means, which are stretched when closing the movable furniture part. However, as already mentioned above, in the case of such an embodiment, the so-called rebound effect may occur if the movable furniture part is moved into the closed position with excess energy, so that the ejection unit is triggered accidentally. This rebound effect is triggered mainly by the hard stop of the movable furniture part or the associated guide device on a stationary counter-attack. This is where the invention begins, ie the excess energy present in a dynamic closing operation is reduced by the damping device.

In a further development of the invention, the at least one damper of the damping device is integrated into the ejection unit. This results in a particularly compact design of the entire device.

Alternatively or additionally, however, it is possible for the at least one damper to be a separate component from the ejection unit, which cooperates with a component of the ejection unit that can be coupled with the closing movement of the furniture part via coupling means. So it is at least provided an external damper. In the coupling means which can be coupled or disconnected to the movement of the movable furniture part, it may be, for example, a latch.

In a particularly preferred manner, the component of the ejection unit which can be coupled with the closing movement of the furniture part is an ejector part which is displaceably guided on a stationarily mountable base part of the ejection unit.

The ejector part may have an ejector housing in which an ejector ram is guided linearly displaceably between a locking position generated by means of locking means and an extension position which can be captured by means of spring force of an ejection spring, wherein the ejector ram acts on the at least one damper.

It is particularly expedient if the ejector ram passes through the ejector housing and emerges from the rear end of the ejector housing in the closing direction of the movable furniture part and cooperates there with the damper arranged behind the ejector housing.

In a particularly preferred manner, the damper is designed as a fluid damper, in particular as an air damper. Alternatively, however, it is also possible to use a hydraulic damper, for example oil damper.

In a particularly preferred manner, the damper on a damper housing and a damper housing mounted in the damper piston, which are mounted relative to each other displaceable. To initiate a damping process, the ejector plunger can press, for example, on the damper piston. Alternatively to the design of a piston damper, a rotary damper can also be used.

In a further development of the invention, the device has a coupling device synchronously coupled in motion by means of the rails of a guide device for the movable furniture part, wherein the at least one damper cooperates with the coupling device. It is possible for the at least one damper to be detachably connected to the coupling device, which may also be referred to as synchronizing unit, for example, being placed on the coupling device.

The invention further comprises a device for opening and closing a movable furniture part having the features of independent claim 10. This device comprises an ejection unit, via which the movable furniture part can be pressed in a predetermined distance and then ejected, wherein the ejection unit is a base part and a displaceable Has guided on the base part and stored by spring means ejector. The device is characterized in that the ejector part in the closing direction of the movable furniture part by means of support means on the base part supported and resiliently mounted in the opening direction by means of the spring means.

Due to the spring mounting of the ejector part in the opening direction, the aforementioned problem is avoided in that components of the ejection unit and components moving together with the movable furniture part do not separate from one another in a destructive manner if the movable furniture part is moved into the closed position with excess energy. Further, in an emergency opening of the movable furniture part easy release of the components of the ejection unit and with the movable furniture part mitbewegten components is possible because the whole system is resiliently mounted in the ejection direction. Although a hard stop is not prevented in the end position, but the rebound energy is collected after striking by means of the spring means.

In a further development of the invention, the spring means comprise at least one compression spring, which is supported on the one hand on the base part and on the other hand on the Auswerferteil. However, there are also other types of springs used, such as tension springs or the like. The spring means may be configured as a helical spring or as a plate spring. As material for the spring means is metal and / or plastic. The spring means may also comprise, for example, a resilient strip of material of the ejection unit.

In a development of the invention, the ejector part has an ejector housing which can be displaced in a linearly displaceable manner on the base part in order to set a defined front gap of the movable furniture part by means of adjusting means.

It is possible that the adjusting means have an adjusting nut which is rotatably mounted stationary on the base part, wherein the adjusting nut has a control head and an attached smaller-diameter, provided with a threaded actuator society, which cooperates with a arranged in the ejector housing counter thread, wherein the compression spring concentric sits on the society and supported on the one hand on the control head and on the other hand on a base part formed on the spring bearing. Alternatively, it is possible that instead of the compression spring in front of the adjusting nut a disc spring is arranged. Further, it is conceivable that the housing elements / housing lugs are elastic or resilient formed before the adjusting nut, which can be dispensed with a pull / pressure or plate spring.

The invention further comprises a furniture part having the features of independent claim 14 and a piece of furniture having the features of independent claim 15.

Figur 1

eine Draufsicht auf ein erstes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung,

Figur 2

eine vergrößerte Darstellung der Einzelheit X aus Figur 1,

Figur 3

eine vergrößerte Darstellung der Einzelheit Y von Figur 1,

Figur 4

eine nochmalig vergrößerte Darstellung der Einzelheit X von Figur 1,

Figur 5

eine perspektivische Darstellung eines zweiten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung,

Figur 6

eine perspektivische Darstellung eines dritten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung,

Figur 7

eine perspektivische Darstellung eines vierten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung und

Figur 8

eine vergrößerte seitlich perspektivische Ansicht der Einzelheit Z von Figur 7.

Preferred embodiments of the invention are illustrated in the drawings and will be explained in more detail below. In the drawing show:

FIG. 1

a plan view of a first embodiment of the device according to the invention,

FIG. 2

an enlarged view of the detail X from FIG. 1 .

FIG. 3

an enlarged view of the detail Y of FIG. 1 .

FIG. 4

a further enlarged view of the detail X of FIG. 1 .

FIG. 5

a perspective view of a second embodiment of the device according to the invention,

FIG. 6

a perspective view of a third embodiment of the device according to the invention,

FIG. 7

a perspective view of a fourth embodiment of the device according to the invention and

FIG. 8

an enlarged side perspective view of the detail Z of FIG. 7 ,

The FIGS. 1 to 4 show a first embodiment of the device 11 according to the invention for opening and closing a movable furniture part 12. The device 11 is shown and described here by way of example when using a designed as a drawer movable furniture part 12. It is of course possible to use the device on other movable furniture parts, for example on a door or on a flap.

The drawer is slidably mounted by means of a guide device 13 relative to a furniture body (not shown). The guide device 13 comprises a plurality of guide units 14, which are arranged on mutually opposite side edges of the drawer. Of the guide units 14 only one example is shown. The guide unit 14 has a carcass rail 15, which may be configured, for example, as a bent sheet-metal component. The carcass rail 15 is connected via suitable fastening means on an associated side wall of a furniture body trained drawer mount fixed position. On the carcass rail 15, a middle rail 16 is slidably mounted, on which in turn a pull-out rail 17 by means of bearing means (not shown) is displaceably guided. The pull-out rail 17, which can also be referred to as a movement rail, is assigned to the drawer and extends below the drawer bottom in the depth direction. The combination of carcass rail 15, middle rail 16 and pull-out rail 17 is called full extension. However, it is also conceivable to use guide units without middle rail.

The device comprises an ejection unit 18, via which the drawer can be pressed in for a predetermined distance and then ejected. The ejection unit 18 is designed as a preassembled module in such a way that it can be fastened or fastened to the drawer or to a device part attached or attachable to the drawer by means of fastening means. The device part according to the first embodiment is the carcass rail 15. The ejection unit 18 is consequently attached to the carcass rail 15 as a preassembled module. The ejection unit 18 could also be referred to as a touch-latch device.

As in particular in FIG. 1 shown, the ejection unit 18 has a stationary on the carcass rail 15 mountable base part 19, which is designed for example like a rail and according to the first embodiment consists of plastic. The ejection unit 18 further comprises an ejector part 20, which is displaceably guided on the base part 19. The ejector part 20 in turn comprises an ejector housing 21, in which an ejector ram 22 between a locking position generated by means of locking means and a by means of spring force of an ejection spring 23 engageable extension position is guided linearly displaceable. At the front end of the ejector ram 22, a coupling part is provided, which is coupled to the front end of the ejector ram 22, for example by means of a latching coupling 24. This latching coupling is in the manner described in more detail later in the emergency opening of the drawer from the ejector ram 22 solvable. At the latching coupling 24, a latching pawl 25 is pivotally mounted, which in turn can be coupled with a driver on the pull-out rail 17. When the drawer is opened by activating the ejection unit 18, there is a coupling between the ejector plunger 22 and the drawer via the detent pawl 22 and the drawer, whereby the ejection spring 23 transmits its spring energy via the ejector plunger 22 and the latching pawl 25 to the drawer, which is then ejected , Upon further opening of the drawer, the latch engages in a provided on the base part 19 of the ejection unit 18 notch 26, whereby a decoupling of latch and driver, such as fishing hooks, so that the drawer can be pulled out independently of pawl 25 and ejector ram 22 even further ,

The ejection unit 18 has locking means with which the ejector plunger can be locked in a locking position. The locking means comprise a control lever (not shown) which is pivotally mounted at the end of the ejector plunger opposite the other end provided with the detent coupling. The control lever engages, for example, with a projecting from the control lever down control pin in a formed on the ejector 21 control cam, which is designed in the manner of a heart curve and thus defines defined positions of the control lever. The embodiment of such Locking means is for example the WO 2006/066774 A1 refer to.

The ejection spring 23 is arranged concentrically to the ejector ram 22 and tries to push the ejector ram 22 out of the ejector housing 21 with spring force. In this case, the ejection spring 23 is supported at the rear end of the ejector 21 and on the other hand presses on the ejector ram. When closing the drawer must therefore be pressed against the force of the ejection spring 23 until the control pin engages the control lever in a detent position of the heart cam curve, whereby on the one hand the ejection spring tensioned and on the other hand the ejector 22 is secured against extension from the ejector 21.

As in particular in FIG. 4 illustrated, the ejector housing 21 for adjusting a defined front gap of the drawer by means of adjusting means linearly displaceable on the base part 19 is adjustably mounted. The adjusting means comprise an adjusting nut 27, displaceably mounted relative to the base part 19. The adjusting nut has a control head 28 and an attached therewith smaller-diameter, provided with a threaded adjustment Stül 30, which cooperates with a arranged on the ejector 21 counter thread. The mating thread 31 is formed, for example, by a protruding on the end face of the ejector 21, integrally formed with this threaded portion. Here, the mating thread 31 passes through an abutment portion 32, which is in particular integrally formed on the base part 19 and projects into the Verstellausnehmung or recording of the ejector 21 in the base part 19. The abutment portion 32 and the rear end of the ejector housing receptacle define a Stellausnehmung 33 for the adjusting nut 27, whose length is shorter than the length of the adjusting recess 33rd

An important aspect of the invention is that the ejector part is supported in the closing direction of the movable furniture part by means of support means on the base part and is resiliently mounted in the opening direction by means of spring means. As in particular in FIG. 4 shown, the ejector housing 21 can be moved together with the adjusting nut 27 within the Auswerfergehäuse recording. In this case, the adjusting head 28 of the adjusting nut 27 counts to the support means, as in FIG. 2 shown, with its front side to the rear end of the ejector housing receptacle and rear end of the adjusting recess 33 can be stopped. The spring means comprise a compression spring 34 which is supported on the one hand on the abutment portion 32 of the base part 19 and on the other hand on the underside of the adjusting head 28 of the adjusting nut, wherein the compression spring 34 concentrically surrounds the stomping 30. As in particular in the Figures 2 and 4 shown, the total length of the adjusting nut 27 is shorter than the length of the adjusting recess 33, so that, for example, in the in FIG. 2 represented situation of the society is at a distance from the abutment portion 32.

By the compression spring 34, a spring mounting of the ejector part is achieved in the opening direction, resulting in the following advantages:

During dynamic closing of the drawer, the drawer is moved by the user with excess energy into the closed position. The closing force is directed against the spring force of the ejection spring 23, which is tensioned when closing. At the same time the Auswerststößel 22 is pressed into the ejector housing 21 and the cam on Control lever at the end of the ejector ram drives along the cardioid-like cam. As in FIG. 2 shown the ejector member 20 is displaced in total, until in the end position of the drawer, the end face of the adjusting head 28 of the adjusting nut 27 abuts against the rear end of the adjusting recess 33. Since the drawer with excess energy enters the closed position, there is a need that this excess energy is reduced, even if the control cam is engaged in its detent position in the heart curve. The reduction of the excess energy via the compression spring 34, which acts in the opening direction and therefore the energy after the stop of the Auswerferteils, when this then moves back in the opening direction, receives. This situation is in FIG. 4 shown. The compression spring is tensioned. The travel is limited by the dimension of the adjusting nut 27, the underside of the stem comes into abutment with the abutment portion 32. The spring-mounted ejector 20 thus prevents after the drawer is struck in its end position in the subsequent return movement in the opening direction with locking ejector plunger so large forces on the connection between the ejector and the detent coupling come that there is a tearing or breaking of the Material is coming. Further, the compression spring allows a reliable emergency opening of the drawer without activating the touch-latch function of the ejection unit. Then namely the drawer is opened in its closed position without pressing, the ejector ram 22 remains engaged. The ejector plunger can therefore not be pulled out of the ejector housing. Nevertheless, there is a connection between the drawer over the latch and the detent with the ejector plunger, which must be solved in the emergency opening. Due to the resilient mounting of Auswerferte this is also possible without further notice and without material.

Finally, the compression spring also prevents a rebound effect, i. an unintentional triggering of the touch latch function, namely, when the touch latch function is triggered unintentionally by the control pin comes out of its detent position.

FIG. 5 shows a second embodiment of the inventive device 11. This embodiment differs from the first embodiment described above in that instead of the spring means a damping device 35 is provided with at least one damper 36 for damping the closing movement of the drawer when retracting into the closed position. According to the second embodiment, the damper 36 is a separate from the ejection unit 18 component, which sits in the opening direction behind the ejector according to the second embodiment. Here, the ejector ram 22 passes through the ejector housing 21 and emerges at the back of the ejector 21, wherein the rear end of the ejector ram 22 cooperates with the damper 36. Otherwise, the structure of the ejection unit 18 with base part 19, ejector part 20, ejector housing 21 and the control cam housed there and the ejector ram 22 with latch 25 and control lever is identical to the first embodiment, so that the description also applies here.

The damper 36 is designed as a piston damper, with a damper housing 37 and a damper piston 37 mounted in the damper housing 38, which are mounted relative to each other displaceable. In the example, the damper housing 37 is fixedly secured to the base part of the ejection unit 18 while the damper piston 38 is slidably mounted in the damper housing 37. The rear end of the ejector ram 22 cooperates with the damper piston 38.

Upon dynamically closing the drawer with excess energy, the ejector plunger 22 is moved relative to the ejector housing 21, with the rear end of the ejector plunger coming into contact with the damper piston 38, thereby initiating a steaming operation, so that the excess energy is dissipated. This will produce the previously described rebound effect, i. prevents unwanted reopening of the drawer.

FIG. 6 shows a third embodiment of the device 11 according to the invention. The structure of the ejection unit 18 is identical to the first embodiment, so that its description also applies to the third embodiment. In particular, as in the first embodiment, a compression spring clamped between adjusting nut and abutment section is also provided here. In contrast to the second embodiment described above, the damper 36 is integrated in the ejection unit 18 in this embodiment. This results in a total of a relatively compact design. This can be done, for example, that the ejector housing 21 also acts as a damper housing 37 and the damper piston (not shown) sits on the ejector ram 22.

Finally, the show FIGS. 7 and 8 A fourth embodiment of the device 11 according to the invention. The construction of the ejection unit 18 is identical to the first embodiment, so that its description also applies to the fourth embodiment. In particular, as in the first embodiment, a compression spring clamped between adjusting nut and abutment section is also provided here. The device 11 comprises a coupling device 39 by means of the rails of the guide device 14, for example, the two slide rails 17 are synchronously coupled motion. In the example, the damper cooperates with the coupling device 39. The coupling device 39, which can also be referred to as a synchronizing unit, is fastened in the example as a structural unit to the guide unit 14, wherein the damper 36 is placed on the coupling device 39. The coupling device 39 comprises relatively movable components, of which one component acts on the damper piston 38 when closing the drawer and thereby initiates a damping process.

Claims (15)

Device for opening and closing a movable furniture part (12), in particular a drawer, door or flap, with an ejection unit (18), via which the movable furniture part (12) can be pressed in a predetermined distance and then ejected, characterized by a with at least one damper (36) equipped damping device (35) for damping the closing movement of the movable furniture part (12) when retracting into the closed position. Apparatus according to claim 1, characterized in that the at least one damper (36) in the ejection unit (18) is integrated. Device according to Claim 1 or 2, characterized in that the at least one damper (36) is a separate component from the ejection unit (18), which component can be coupled with the closing movement of the furniture part (12) via coupling means (25). 18) cooperates. Apparatus according to claim 3, characterized in that it is at the with the closing movement of the furniture part (12) bewegungskoppelbaren component to an ejector part (20) of the ejection unit (18), which is fixed to a mountable base part (19) of the ejection unit (18) is guided displaceably. Apparatus according to claim 4, characterized in that the Auswerferteil (20) comprises an ejector (21) in which an ejector ram (22) guided linearly displaceable between a locking position generated by means of locking means and by means of spring force of an ejection spring (23) retractable extension position is, wherein the ejector ram (22) acts on the at least one damper. Apparatus according to claim 5, characterized in that the ejector ram (22) passes through the ejector housing (21) and emerges from the rear end of the ejector housing (21) in the closing direction of the movable furniture part (12) and there with the rear one behind the ejector housing (21). arranged damper (36) cooperates. Device according to one of the preceding claims, characterized in that the damper (36) as a fluid damper, in particular air damper is formed. Device according to one of the preceding claims, characterized in that the damper (36) has a damper housing (37) and a damper piston (38) mounted in the damper housing (37), which are mounted displaceably relative to one another. Device according to one of the preceding claims, characterized by a coupling means by means of the rails of a guide means (14) for the movable furniture part (12) are synchronously coupled in motion, wherein the at least one damper (36) cooperates with the coupling device (39). Device for opening and closing a movable furniture part, in particular drawer, door or flap, with an ejection unit, via which the movable furniture part (12) can be pressed in and pushed out by a predetermined distance, wherein the ejection unit (18) comprises a base part (19) and a slidably on the base part (19) guided and by means of spring means (34) mounted ejector part (20), characterized in that the ejector part (20) in the closing direction of the movable furniture part (12) supported by supporting means on the base part and resiliently mounted in the opening direction by means of the spring means is. Apparatus according to claim 10, characterized in that the spring means comprise at least one compression spring (34) which is supported on the one hand on the base part (19) and on the other hand on the Auswerferteil (20). Apparatus according to claim 10 or 11, characterized in that the Auswerferteil (20) comprises an ejector housing (21) which is adjustable to adjust a defined front gap of the movable furniture part (12) by means of adjusting linearly displaceable on the base part (19). Device according to one of claims 10 to 12, characterized in that the adjusting means comprise an adjusting nut (27) which is rotatably mounted on the base part (19), wherein the adjusting nut (27) has a control head (28) and a diameter-reduced thereon, with An actuating thread (30) which cooperates with a arranged on the ejector housing mating thread (31), wherein the compression spring (34) concentrically on the Stellschaft (30) sits and on the one hand on the adjusting head (28) and on the other hand on one of the base part (19 ) formed spring bearing is supported. Furniture part, in particular drawer, characterized by a device according to one of claims 1 to 13. Furniture, with at least one movable furniture part, in particular drawer, characterized by a device according to one of claims 1 to 13.

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