CN108350714B

CN108350714B - Drive device for a movable furniture part

Info

Publication number: CN108350714B
Application number: CN201680065955.2A
Authority: CN
Inventors: A·S·弗洛高斯
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2015-11-12
Filing date: 2016-10-18
Publication date: 2020-04-24
Anticipated expiration: 2036-10-18
Also published as: EP3374585A1; EP3374585B1; AT517923A1; WO2017079771A1; ES2899910T3; CN108350714A

Abstract

The invention relates to a drive device (1) for a movable furniture part (2), in particular a door or flap, comprising: a carrier (3), an ejection device (4) which is movable relative to the carrier (3) and which is used to eject the movable furniture part (2) from a closed position (SS) in an opening direction (OR), wherein the ejection device (4) has an ejection element (5) which is movably mounted on the carrier (3) and an ejection energy store (6) which loads the ejection element (5) during ejection, the ejection energy store (6) has a first energy store base (K1) and a second energy store base (K2), and a tensioning device (7) for tensioning the ejection energy store (6), wherein the entire ejection energy store (6) can be moved together with the carrier (4) relative to the carrier (3), wherein the two energy store bases (K1, K2) can be moved relative to the carrier (3) during tensioning, wherein the two energy store bases (K1) during ejection, K2) can move relative to the bearing body (3).

Description

Drive device for a movable furniture part

Technical Field

The invention relates to a drive device for a movable furniture part, in particular a door or flap, comprising: a carrier; a push-out device which is movable relative to the carrier and is used for pushing out the movable furniture part from the closed position along the opening direction, wherein the push-out device comprises a push-out element movably supported on the carrier and a push-out energy accumulator loading the push-out element during push-out, and the push-out energy accumulator comprises a first energy accumulator base (Kraft thermal accumulator base) and a second energy accumulator base; and a tensioning device for tensioning the push-out energy accumulator. In addition, the invention relates to a piece of furniture having such a drive device.

Background

In the furniture fitting industry, efforts have been made for many years to assist the movement of movable furniture parts by means of furniture fittings. Examples of this are so-called touch-latch mechanisms, in which the locking device is unlocked by pressing on the movable furniture part, in which way the ejector device pushes the movable furniture part out in the opening direction. An important aspect of such a mechanism is the tensioning of the ejection accumulator necessary for ejection. The simplest variant here is: when the movable furniture part is closed, the ejection element is again tensioned by the same movement path. The disadvantages here are: the ejection element can then be extended or combined with a pull-in device for automatically pulling the movable furniture part into the closed position is complicated or completely impossible.

For this reason, solutions have already been provided in which the ejection accumulator is already pretensioned when the ejection accumulator is opened further after ejection. An example of this is given by AT 512699 a1, according to which the rear energy accumulator base can be moved relative to the carrier when the energy accumulator is charged. Thus, instead of pushing out the energy accumulator in the opposite direction, the rear energy accumulator base is pulled from the rear to the front energy accumulator base. During this pulling process, the front energy storage base is stationary relative to the support body, whereas during the pushing-out process only the rear energy storage base is stationary relative to the support body.

In addition, the invention relates to a drive device in which the entire ejection energy store can be moved together with the ejection device relative to the carrier body. Examples hereof are produced by EP 2279680 a 1.

The invention also relates to a drive device in which the two energy accumulator bases can be moved relative to the carrier when tensioned. For this purpose, see for example DE 102010008134U 11.

Disclosure of Invention

The purpose of the invention is: an alternative drive device is provided in addition to the drive device or the ejector. In particular, the tensioning and releasing of the ejection accumulator should be changed or simplified.

This is achieved by having a drive device according to the invention. According to the invention, therefore: when pushed out, the two energy accumulator bases can move relative to the carrier. In contrast to the prior art, therefore, instead of the respective one of the energy storage bases of the ejection energy storage being stationary, the two energy storage bases move at least in regions relative to the support body when tensioned and when relaxed.

Although it can be specified that: the first energy accumulator base moves in the opposite direction when tensioned and when relaxed, however, it is preferably provided that: the first energy accumulator base can be moved in the same direction, preferably in the opening direction, relative to the carrier during the ejection and during the tensioning. The same applies to the second energy accumulator base, so that the second energy accumulator base can preferably be moved in the same direction, preferably in the opening direction, relative to the carrier during the ejection and during the tensioning.

In order to be able to achieve tensioning and releasing of the thrust accumulator in a simple manner, provision is made for: the first and second accumulator bases are movable relative to each other when tensioned and when pushed out. Firstly, in this case it is preferably provided that: the first and second energy storage bases can be moved at mutually different speeds relative to the carrier body during tensioning and during ejection. Depending on these different movement sequences, tensioning or releasing of the ejection accumulator takes place.

The design of the ejection accumulator itself is arbitrary. For example, the energy store can be magnetically active or configured to be magnetic. However, it is preferably provided that: the ejection accumulator is configured in the form of a spring. In this case, provision can be made for: this spring is configured as a belleville spring, a coil spring or the like. In a preferred embodiment variant, the ejection energy store is designed as a tension spring. In principle, it is also possible: the ejection energy store is configured as a spring pack.

For a simple design of the motion transmission, provision is preferably made for: the ejection element has an ejection carriage which is preferably linearly slidable and an ejection lever which is acted upon by the ejection energy store and is mounted on the ejection carriage in a movable, preferably rotatable manner. The ejection carriage is movably mounted on the carrier body via a carriage guide.

For simple deduction, provision is made for: the ejection lever bears against an ejector (absossteil) fixed relative to the carrier during ejection. In order to ideally adapt the force released by the energy store to the movement of the movable furniture part during the ejection, provision can be made for: the ejection lever bears against the guide contour of this ejection element, which is fixed relative to the carrier body.

According to a preferred embodiment of the invention, provision is made for: the tensioning device has a tensioning lever which is acted upon by the push-out energy store during tensioning and which, during tensioning, rests against a tensioning element fixed to the support body, preferably against a guide contour of this tensioning element fixed to the support body. The guide profile can also contribute to a light tensioning by its construction, so that the user feels no or little tensioning movement. The ratio of the ejection stroke to the tensioning stroke can first be varied by adjusting the guide profiles of the ejector and tensioner. In particular, the same energy must always be introduced into the push-out energy store, which is also released. By means of the special design of the guide contour, for example, a comparatively short and powerful ejection stroke can be achieved, while a longer tensioning stroke and thus a softer appearance to the operator can be achieved.

With regard to the tensioning lever, provision can preferably be made for: this tensioning lever is also mounted movably, preferably rotatably, on the ejection carriage of the ejection device.

In a particularly simple and compact embodiment variant, provision is made for: the ejection lever and the tensioning lever are fixedly connected to one another and are preferably designed in one piece. The same component thus constitutes both the push-out lever and the tensioning lever. Depending on whether tensioning or pushing-out is taking place, this component is moved in different directions.

In a preferred drive device, a locking device is provided for locking the ejection device in a locking position, wherein the locking device can be unlocked by pressing the movable furniture part into an overpressure position following the closed position. In a special embodiment variant, provision is made here for: the locking device has a locking lever mounted movably, preferably rotatably, on the ejection lever and a locking track, preferably in the shape of a heart curve, formed in or on the ejection carriage, wherein the ejection lever can be locked in a locking position in the locking track via the locking lever and a locking pin formed thereon.

In order to transmit the opening movement of the movable furniture part to the drive device, provision is made in one embodiment for: the ejection device has a push rod connected to the ejection element and a coupling head for detachably connecting the push rod to the movable furniture part. This detachable connection can be realized here via a force-controlled (kraftgetteert) connection (for example magnetic, as in AT 512699 a 1) or for example via a path-controlled (weggesteuert) coupling (for example as in the non-previously published austrian patent application a 360/2015).

In order to return the entire drive device into its initial position after tensioning, a return device is provided for moving the ejection device relative to the carrier body in the closing direction. This return device can be designed, for example, in the form of a return spring.

Furthermore, provision can be made for: the drive device also has a preferably damped retraction device for retracting the movable furniture part from the open position into the closed position.

It is also required to protect the furniture with the drive device according to the invention. In principle, it is possible to provide: the drive device is arranged on the movable furniture part and rests against the furniture body. However, it is preferably provided that: the drive device is arranged on the furniture body and pushes out or pushes away the movable furniture part. The movable furniture part can be configured as a flap, a door or a drawer.

Drawings

Further details and advantages of the invention are further elucidated with reference to the embodiments shown in the drawing with the aid of the description of the drawing. Wherein:

fig. 1 shows a piece of furniture with a door and a drive device;

fig. 2 shows a piece of furniture with a flap and a drive device;

fig. 3 shows an exploded view of the drive device;

fig. 4a to 15a each show a top view of a movement sequence of the drive device;

fig. 4b to 15b show perspective views of the drive device corresponding to fig. 4a to 15 a.

Detailed Description

Fig. 1 shows a piece of furniture 21 having a furniture body 22 and a movable furniture part 2 in the form of a door (movable about a vertical axis). The drive device 1 is mounted on the inner side of the furniture carcass 22. From this drive device 1, a push rod 18 can be seen, which can be coupled to a coupling element 23 mounted on the movable furniture part 2.

Fig. 2 also shows a piece of furniture 21, in which case the movable furniture part 2 is in the form of a flap which is mounted movably on a furniture body 22 via a flap fitting 24 and a corresponding lever assembly. The drive device 1 is shown in the lower region of the furniture carcass 22.

Fig. 3 shows an exploded view of a specific embodiment of the drive device 1. The drive device 1 has a carrier 3, which can also be designed in the form of a housing. A carriage guide 33 for pushing out the carriage 8 is formed on this carrier body 3. This ejection carriage 8 together with the ejection lever 9 forms the ejection element 5. In this embodiment variant, the ejection lever 9 is again formed in one piece with the tensioning lever 12. The push-out lever 9 is rotatably supported on the push-out carriage 8 via a rotary bearing 32 and a rotary pin 29. A push-out roller 30 is preferably rotatably mounted on the front end of the push-out lever 9. A tensioning roller 31 is preferably rotatably mounted on the tensioning lever 12 in the same manner. A second energy accumulator base K2, to which one end of the ejection energy accumulator 6 is connected, is also provided on the ejection lever 9. This ejection energy store 6 is in this exemplary embodiment designed as a tension spring. A first energy accumulator base K1 is arranged at the other end of the ejection energy accumulator 6 and is attached to the ejection carriage 8. The locking lever 16 is mounted on the ejection lever 9 movably, preferably rotatably, via a lever bearing (Hebellager) 35. A locking pin 36 is formed at one end of this locking lever 16, which pin is inserted into the locking rail 17. The locking rail 17 is formed in this case on a plate-like component which is fitted on the ejection carriage 8. However, the locking track 17 can also be formed directly on the ejector carriage 8. The locking rail 17 together with the locking lever 16 form the locking device 15. The push rod 18 is fitted on the push-out carriage 8 via a connection 38. This push rod 18 can be detachably connected via a coupling head 19, which is not visible here, to a coupling element 23, which can be mounted on the movable furniture part 2. A push rod guide 25 is mounted on the carrier body 3, by which the push rod 18 is guided. Furthermore, a push-off element 10 is provided on the carrier 3, on which a guide contour 11 corresponding to the push-off roller 30 is formed. A tensioning member 13 is also provided on the carrier body 3 and has a guide profile 14 corresponding to the tensioning roller 31. A return prevention stop (rueckfachrschichplug) 28 is attached to the carrier 3. This anti-return stop corresponds to an anti-return lever 26 rotatably supported on the push-out carriage 8 and an anti-return spring 27.

Fig. 4a shows the drive device 1 in the assembled state in the closed position SS of the movable furniture part 2. The position of the movable furniture part 2, which is not shown here, is represented by a coupling element 23 provided on the movable furniture part 2. In fig. 4a, the locking device 15 is in the locking position VS. The locking pin 36 of the locking lever 16 is held in the latching recess of the locking rail 17. The ejector roller 30 bears against the guide contour 11 of the push-apart element 10. The ejection energy store 6 is tensioned and connected to the ejection carriage 8 via a first energy store base K1. Illustrated again in fig. 4b corresponding to fig. 4a is: the ejection element 5 consists of an ejection carriage 8 and an ejection lever 9. The ejection element 5 in turn forms an ejection device 4 together with the ejection energy store 6, the ejection roller 30 and the push rod 18. This ejection device 4 can be moved in its entirety relative to the carrier 3.

Fig. 5a shows the unlocking of the locking device 15. This is achieved in that the movable furniture part 2 which was previously located in the closed position SS is pressed in the closing direction SR. The coupling element 23 and thus the push rod 18 and the push-out carriage 8 move together with this coupling element in the closing direction SR. The rotation pin 29 is also moved with the ejection carriage 8 in the closing direction SR, and in this way the ejection lever 9 also performs this movement. However, made ofSince the ejection lever 9 bears against the guide contour 11 of the ejection element 10, this ejection lever 9 is also rotated or ejected in the clockwise direction. The locking lever 16 arranged on the ejection lever 9 is therefore also moved relative to the ejection carriage 8. Since the locking track 17 is also formed on or in this ejection carriage 8, the locking pin 36 moves out of the latching recess and is pressed against the ejection ramp 37, so that the locking pin 36 comes out of the locking section into the ejection section of the locking track 17. In this way, the locking device 15 is in this overpressure position

And (4) unlocking. Fig. 5b shows this overpressure position

In a perspective view, it can be clearly seen that the ejector roller 30 bears against the guide profile 11 and that the ejector lever 9 is pivoted slightly about the pivot pin relative to the ejector carriage 8.

As soon as the locking pin 36 reaches the ejection section and the user no longer presses the movable furniture part 2, the ejection energy store 6 can be released immediately. This release is achieved according to fig. 6a by the ejection energy store 6, which is embodied as a tension spring, contracting. Since this ejection energy store 6 acts on the ejection lever 9 via the second energy store base K2 and this ejection lever 9 bears against the ejection element 10, the retraction of the ejection energy store 6 causes not only a rotation of the ejection lever 9 in the counterclockwise direction, but also a movement of the ejection carriage 8 via the first energy store base K1 in the opening direction OR. As a result of the connection of the ejector carriage 8 with the push rod 18 and the coupling element 23, the movable furniture part 2 is moved in the opening direction OR and into the open position OS. During the rotational movement of the ejection lever 9, the locking lever 16 also continues to move in the ejection section of the locking track 17. During this pushing out of the movable furniture part 2, both the first energy accumulator base K1 and the second energy accumulator base K2 move relative to the carrier 3. The rotational movement of the ejection lever 9 relative to the ejection carriage 8 also produces a relative movement of the first energy accumulator base K1 and the second energy accumulator base K2 relative to each other. The push-out movement is controlled via the guide profile 11. Fig. 6a also shows a return device 20 in the form of a tension spring. This return device 20 is mounted at one end on the carrier 3 and at the other end on the ejection carriage 8. Fig. 6b corresponds to the view shown in fig. 6 a.

In fig. 7a, the push-out motion continues further. The locking lever 16 continues to move in the locking track 17. As the ejection accumulator 6 contracts further, the ejection lever 9 continues to rotate about the rotation pin 29. The accumulator bases K1 and K2 are therefore closer together. The return-prevention lever 26 bears against a return-prevention stop 28, wherein this return-prevention lever 26 is rotated in the clockwise direction relative to the ejection carriage 8 and is tensioned by a return-prevention spring 27, which is embodied as a tension spring. Fig. 7b corresponds to fig. 7 a.

In fig. 8a, the ejection energy store 6 is completely released, so that the ejection lever 9 is rotated in the counterclockwise direction to such an extent that the tensioning lever 12 bears against the guide contour 14 of the tensioning element 13 via the tensioning roller 31. This guide contour 14 of the tensioning element 13 forms the tensioning device 7 together with the tensioning roller 31 and the tensioning lever 12. In this position shown in fig. 8a, the ejection process is ended and a direct transition to the tensioning process ensues. If the movable furniture part 2 is not actively pulled in the opening direction OR in this position, the return movement of the ejection device 4 is prevented via the return device 20 in that the anti-return lever 26 can catch on one of the teeth of the anti-return stop 28. Fig. 8b shows a perspective view of the drive device 1 corresponding to fig. 8 a.

In fig. 9a, the movable furniture part 2 is actively pulled in the opening direction OR. The ejector carriage 8 is thus moved relative to the carrier 3 via the coupling element 23 and the push rod 18. Since the rotation pin 29 also performs this movement of the ejection carriage 8, while the tensioning roller 31 bears against the tensioning element 13, the tensioning lever 12 is rotated in the clockwise direction relative to the ejection carriage 8. A relative movement between the second energy storage base K2 and the first energy storage base K1 is thus also produced, by which means the energy storage device 6 is pushed out to be tensioned again. In this tensioning movement, the two energy accumulator bases K1 and K2 also move relative to the carrier 3. In this tensioning movement, the locking lever 16 is again moved relative to the ejector carriage 8 along the locking track 17 in the direction of the latching recess. Fig. 9b corresponds to fig. 9a, wherein it can also be clearly seen that the guide contour 14 on the tensioning element 13 is of comparatively long design, so that the tensioning movement is longer in the movement region of the movable furniture part 2 than the pushing-out movement. The tensioning movement is therefore more portable for the user.

In fig. 10a, the tensioning lever 12 continues to rotate together with the ejection lever 9 in the clockwise direction, so that the ejection energy accumulator 6 is tensioned further in that the energy accumulator bases K1 and K2 move further apart from one another. In fig. 10a, the return device 20 is also tensioned further. The locking lever 16 is closer to the latching recess. Fig. 10b again shows a perspective view of the drive device 1.

In fig. 11a, the tensioning lever 12 is pivoted about the pivot pin 29 by contact with the guide contour 14 to such an extent that the locking lever 16 is locked again in the latching recess of the locking rail 17. The ejection energy store 6 is also fully tensioned again. The accumulator bases K1 and K2 are moved away from each other again. In this open position OS, the locking position VS is thus reached and the tensioning movement is also ended after the ejection movement. Fig. 11b again corresponds to this fig. 11 a.

As a result of the locking position VS being reached, the push rod 18 can now be decoupled from the coupling element 23 according to fig. 12 a. In fig. 12a it can also be seen that the coupling head 19 of the push rod 18 has been disengaged from the coupling element 23. This separation can be done force controlled or path controlled. Fig. 12b corresponds to fig. 12 a.

After this separation has been completed, the energy accumulator of the restoring means 20 can be released and the entire ejection means 4 can be moved in the closing direction SR (fig. 13a and 13b) relative to the carrier body 3.

This return movement is further continued in fig. 14a and 14b, in which the return-prevention lever 26 slides with its flattened side along the tooth of the return-prevention stop 28.

In fig. 15a and 15b, the ejection device 4 is completely retracted into the carrier 3 by the return device 20. The movable furniture part 2 is however still in the open position OS.

If the movable furniture part 2 is then closed again manually and/or by means of a pull-in device, the initial position shown in fig. 4a and 4b is finally reached again, in which the coupling element 23 comes into contact with the coupling head 19 of the push rod 18.

Claims

1. Drive device (1) for a movable furniture part (2), comprising:

a carrier body (3),

a push-out device (4) which is movable relative to the carrier (3) and is used for pushing out the movable furniture part (2) from the closed position (SS) along an opening direction (OR), wherein the push-out device (4) comprises a push-out element (5) movably supported on the carrier (3) and a push-out energy accumulator (6) for loading the push-out element (5) during push-out, the push-out energy accumulator (6) comprises a first energy accumulator base (K1) and a second energy accumulator base (K2), and

a tensioning device (7) for tensioning the push-out energy accumulator (6),

wherein the entire ejection energy store (6) can be moved jointly with the ejection device (4) relative to the carrier (3), wherein the first energy store base (K1) and the second energy store base (K2) can be moved relative to the carrier (3) when tensioned, characterized in that: the first energy storage base (K1) and the second energy storage base (K2) can move relative to the bearing body (3) when pushed out,

the ejection element (5) has an ejection carriage (8) and an ejection lever (9) which is acted upon by the ejection energy store (6) and is mounted movably on the ejection carriage (8), one end of the ejection energy store (6) acting on a first energy store base (K1) mounted on the ejection carriage (8), and the other end of the ejection energy store (6) acting on a second energy store base (K2) arranged on the ejection lever (9).

2. The drive apparatus according to claim 1, characterized in that: the movable furniture part (2) is a door or a flap.

3. The drive apparatus according to claim 1, characterized in that: the first energy accumulator base (K1) can be moved in the same direction relative to the carrier body (3) during the ejection and during the tensioning.

4. A drive apparatus according to claim 3, wherein: the first energy accumulator base (K1) can be moved in the opening direction (OR) relative to the carrier (3) during the ejection and during the tensioning.

5. The drive apparatus according to any one of claims 1 to 4, characterized in that: the second energy accumulator base (K2) can be moved in the same direction relative to the support body (3) during the ejection and during the tensioning.

6. The drive apparatus according to claim 5, wherein: the second energy accumulator base (K2) can be moved in the opening direction (OR) relative to the carrier (3) when pushed out and when tensioned.

7. The drive apparatus according to any one of claims 1 to 4, characterized in that: the first energy storage base (K1) and the second energy storage base (K2) can move relative to each other when tensioned and when pushed out.

8. The drive apparatus according to any one of claims 1 to 4, characterized in that: the first energy storage base (K1) and the second energy storage base (K2) can move at different speeds relative to the carrier body (3) when tensioning and when pushing out.

9. The drive apparatus according to claim 1, characterized in that: the push-out carriage (8) can slide linearly.

10. The drive apparatus according to claim 1, characterized in that: the ejection lever (9) is rotatably mounted on the ejection carriage (8).

11. The drive apparatus according to claim 1, characterized in that: the ejection lever (9) rests against an ejection element (10) fixed relative to the carrier during ejection.

12. The drive apparatus according to claim 11, wherein: the ejection lever (9) bears against a guide contour (11) of an ejection element (10) fixed to the carrier during ejection.

13. The drive apparatus according to any one of claims 1 to 4, characterized in that: the tensioning device (7) has a tensioning lever (12) which is acted upon by the thrust energy accumulator (6) during tensioning and which, during tensioning, rests against a tensioning element (13) which is fixed relative to the support body.

14. The drive apparatus as recited in claim 13, wherein: the tensioning lever (12) bears against a guide contour (14) of a tensioning element (13) fixed to the support body when tensioned.

15. The drive apparatus as recited in claim 13, wherein: the tensioning lever (12) is mounted movably on an ejection carriage (8) of the ejection device (4).

16. The drive apparatus as recited in claim 15, wherein: the tensioning lever (12) is rotatably mounted on a push-out carriage (8) of the push-out device (4).

17. The drive apparatus as recited in claim 13, wherein: the ejection element (5) has an ejection carriage (8) and an ejection lever (9) which is acted upon by an ejection energy store (6) and is mounted movably on the ejection carriage (8), wherein the ejection lever (9) and the tensioning lever (12) are fixedly connected to one another.

18. The drive apparatus as recited in claim 17, wherein: the ejection lever (9) is formed in one piece with the tensioning lever (12).

19. The drive apparatus according to any one of claims 1 to 4, characterized in that: a locking device (15) is provided for locking the ejection device (4) in a locking position (VS), wherein the locking device (15) can be unlocked by overpressing the movable furniture part (2) into an overpressure position following the closed position (SS).

20. The drive apparatus as recited in claim 19, wherein: the ejection element (5) has an ejection carriage (8) and an ejection lever (9) which is acted upon by the ejection energy store (6) and is mounted movably on the ejection carriage (8), and the locking device (15) has a locking lever (16) mounted movably on the ejection lever (9) and a locking track (17) formed in or on the ejection carriage (8), wherein the ejection lever (9) can be locked in a locking position (VS) in the locking track (17) by means of the locking lever (16).

21. The drive apparatus as recited in claim 20, wherein: the locking lever (16) is rotatably mounted on the ejection lever (9).

22. The drive apparatus as recited in claim 20, wherein: the locking track (17) is heart-shaped and curved.

23. The drive apparatus according to any one of claims 1 to 4, characterized in that: the ejection device (4) has a push rod (18) connected to the ejection element (5) and a coupling head (19) for detachably connecting the push rod (18) to the movable furniture part (2).

24. The drive apparatus according to any one of claims 1 to 4, characterized in that: a return device (20) is provided for moving the ejection device (4) relative to the carrier (3) in a closing direction (SR).

25. Furniture (21) with a drive device (1) according to one of claims 1 to 24.