EP3307112A1

EP3307112A1 - Ejection device for a movable furniture part

Info

Publication number: EP3307112A1
Application number: EP16734548.7A
Authority: EP
Inventors: Fredi Dubach
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2015-06-09
Filing date: 2016-05-17
Publication date: 2018-04-18
Also published as: JP2018517083A; EP3486418B1; CN107847050A; US20180087305A1; WO2016197164A1; US10508483B2; CN107847050B; JP6556267B2; AT16159U1; EP3486418A1

Abstract

The invention relates to an ejection device (1) for a movable furniture part (2), comprising a support (3) which is formed in particular as a housing; an ejection element (4) for ejecting the movable furniture part (2) from a closed position (SS) into an open position (OS) along an ejection path (A); an ejection force accumulator (5) which applies a force to the ejection element (4) in the opening direction (OR) of the movable furniture part (2), said ejection force accumulator (5) acting on the support (3) and on the ejection element (4); and a clamping device (6) for clamping the ejection force accumulator (5). The clamping device (6) has a clamping element (7), which can be coupled to the movable furniture part (2), and a movement transmission element (8), in particular a rotatable movement transmission element, between the clamping element (7) and the ejection element (4). The clamping element (7) and the ejection element (4) can be moved in opposite directions (R1, R2) in a coupled manner by the movement transmission element (8) when the ejection force accumulator (5) is clamped, and the ejection element (4), the movement transmission element (8), and the clamping element (7) can be moved together relative to the support (3) at least over a first part of the ejection path (A).

Description

Ejecting device for a movable furniture part

The invention relates to an ejection device for a movable furniture part, with a, in particular designed as a housing carrier, an ejection element for ejecting the movable furniture part from a closed position along a Ausstoßweg in an open position, the ejection element in the opening direction of the movable furniture part kraftbeaufschlagenden ejection force memory, wherein the Ejecting force storage on the one hand on the carrier and the other on the ejection element engages and a clamping device for clamping the ejection force accumulator, wherein the clamping device comprises a movable element with the movable clamping member and a, in particular rotatable, motion transmission element between clamping element and ejection element, wherein during clamping of the ejection force accumulator, the clamping element and the ejection element coupled by the motion transmitting member in opposite directions are movable. In addition, the invention relates to a piece of furniture with a furniture body, a movable furniture part and such an ejection device for the movable furniture part. In the furniture fitting industry ejection devices for movable furniture parts such as drawers, furniture doors or furniture flaps have been known for many years. Often such ejectors are also referred to as a touch-latch mechanism or as a tip-on mechanism. An example of such an ejector is shown in applicant's own WO 2013/134798 A1. Especially in the last embodiment mentioned therein, it is taught that a tensioning device is provided for tensioning the ejection force accumulator, wherein the tensioning element is pulled along by a movable magnet part when opening via a magnet. This movement of the tension member in the opening direction is converted into a movement of the ejection member in the opposite direction via a motion transmission member in the form of a gear. As a result, when the movable furniture part is pulled over the tensioning device, the ejection force accumulator is loaded. The rotatable motion transmitting element always remains in this ejection device the same place, thereby are - to load the ejection energy storage - relatively large paths of the clamping element cover.

The object of the present invention is therefore to provide a prior art alternative or improved ejection device.

This is achieved by an ejection device having the features of claim 1. Accordingly, the invention provides that the ejection element, the motion transmission element and the tensioning element are movable relative to the carrier at least over a first part of the ejection path. Thus, already part of the movement path to be performed during the tensioning movement can be covered by these three parts together. There must be no decoupling between these three parts. In addition, not as in the prior art, two elements, namely the ejection element and the clamping element, must protrude from the carrier or housing of the ejection device.

Preferred embodiments of the present invention are generally set forth in the subclaims. Thus, it is in principle possible that the joint movement of the motion transmission element, the clamping element and the ejection element takes place only relatively short or only over a part of the ejection path of the ejection element. Preferably, however, it is provided that the ejection element, the motion transmission element and the tensioning element are jointly movable relative to the carrier over the entire ejection path. For a simple possibility of the common movement, it is preferably provided that the ejection element, the motion transmission element and the tensioning element are displaceable together, preferably linearly, along a guide track formed in the carrier and having two end stops. In order to control the clamping of the ejection force accumulator as accurately as possible, it is preferably provided that when the ejection force accumulator is tensioned, the motion-transmitting element bears against an end stop of the guideway,

In principle, it is possible for the motion transmission element to be designed, for example, in the form of a lever mechanism or otherwise. For a simpler and safe design is preferably provided that the motion transmission element is designed as a gear. Matching is additionally preferably provided that the clamping element and the ejection element each have a rack. Thus, it is particularly preferred that when clamping the ejection force accumulator the rack of the clamping element and the rack of the ejection element mesh with the motion transmission element designed as a gear and through the

Motion transmission element coupled in mutually opposite directions, preferably in the form of a 1: 1 translation, are movable. As a result, a secure transmission of the clamping movement is ensured on the ejection force storage.

In order to ensure, after tensioning the ejection force accumulator, that the clamping element does not protrude from the furniture body until the movable furniture part closes again, a return device for moving the clamping element into a return position is preferably provided, wherein the return device comprises a return element which can be coupled to the clamping element and a return element having acting restoring force memory. This return device can in principle be formed separately from the rest of the ejection device. In order to require as few components as possible, it is preferably provided that the return element is formed by the motion transmission element. Consequently, this motion transmission element fulfills a dual function, namely when tensioning the ejection force accumulator and when retrieving the tensioning element. It is particularly preferred that the return element comprises a carriage and the motion transmission element formed as a gear and rotatably mounted in the carriage. In this compact design is provided in the same manner as in the tensioning device, that the return element is mounted limitedly displaceable in the formed in the carrier and two end stops having guideway.

For the basic function of the ejection device should not be excluded that is clamped when closing the movable furniture part on the jig of the ejection energy storage. But to use the anyway after ejection usually carried out by a user active additional opening movement is preferably provided that when pulling the movable furniture part in the opening direction of the ejection force accumulator by the clamping device, preferably along a subsequent to the ejection path clamping path, can be tensioned. In order to avoid an undesired triggering of the ejection device, a locking device for locking the ejection element in a locking position is preferably provided, wherein the locking device can be unlocked by overpressing the movable furniture part in a lying behind the closed position Überdrückstellung. The locking can be done for example on the basis of the ballpoint pen principle, on friction surfaces or similar variants. Preferably, it is provided that the locking device has a trained in the carrier, preferably heart-shaped, slide track, one on the ejection element movable, preferably rotatable, mounted control lever and engaging in the slide track and arranged on the control lever control pin.

Protection is also desired for a piece of furniture with a furniture body, a movable furniture part and an ejection device according to the invention for the movable furniture part. In this case, it is irrelevant whether the ejection device itself is arranged on the movable furniture part and repels the furniture body or whether the ejection device is arranged on the furniture body and actively ejects the movable furniture part in the opening direction. The basic operating principle remains the same for both variants. Preferably, such an ejection device can also be combined with a, preferably damped, retraction device. Thus, not only a simple ejection by pressing on the movable furniture part is possible, but it is actively retracted the movable furniture part in the closing direction on the last centimeters or millimeters of the closing path. For example, such a retraction device may be integrated into a hinge of a furniture door. The ejection device and the retraction device may, but need not, be integrated into one assembly.

Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawings. Show: 1 a is a perspective view of a piece of furniture with a furniture door and an ejection device,

Fig. 1 b is a perspective view of a piece of furniture with three drawers and a respective ejection device

2 shows an ejection device in an exploded view,

Fig. 3 is a perspective view of the assembled

Ejector

Fig. 4 to 12 in a plan view of the movement of an ejection device when ejecting, clamping and retrieving and

Fig. 13 shows the movement of the ejection device overview on one side.

Fig. 1 a shows a furniture 21 with a furniture body 22 and a movable furniture part 2 in the form of a furniture door. The movable furniture part 2 is pivotally mounted on the furniture body 22 via two hinges 23. In one of these hinges 23, a retraction device, not shown, for the movable furniture part 2 may be integrated. On the furniture body 22, an ejection device 1 is hingedly arranged. In this case, it can be seen that the ejection device 1 has a coupling piece 25 at its end facing the movable furniture part 2. This coupling piece 25 can be coupled with a coupling piece 24 arranged on the movable furniture part. In this Fig. 1, the movable furniture part 2 is in the open position OS.

Fig. 1 b shows a furniture 21 with a furniture body 22 and three movable furniture parts 2 in the form of drawers. The drawers are slidably mounted on drawer extension guides on the furniture body 22. On the furniture body 22, an ejection device 1 for ejecting the drawer in an open position OS (see top drawer) is arranged. However, the ejection device 1 can also be arranged on the drawer itself or on a rail of the pull-out guide.

In Fig. 2 is an exploded view of the ejection device 1 is shown. As a base part, this ejection device 1, the carrier 3. This can form a housing for the entire components of the ejection device 1 together with a cover, not shown. In the carrier 3 is a slide track 18 for the Ejection element 4 is formed. On the ejection element 4, the control lever 19 is rotatably supported via the control lever pivot bearing 31. At this control lever 19, in turn, the control pin 20 is arranged, which engages in the heart-shaped cam track 18. In addition, a guide track 34 for the clamping element 7 is formed in the carrier 3. At the front end of this clamping element 7, the coupling piece 25 is arranged, which forms the coupling device 26 together with the coupling counterpart 24. In addition, the coupling and decoupling element 27 is provided with the coupling power accumulator 40 for coupling and decoupling. This designed as a substantially V-shaped tension spring coupling power storage 40 is not shown in Fig. 2, but from Fig. 4 can be seen. In the carrier 3, the guide track 28 is formed for the coupling and decoupling element 27. Furthermore, a latch 61 is provided for the coupling and decoupling element 27, which is rotatably mounted in the bearing 62 and has a receiving trough 63 for the formed on the coupling and decoupling element 27 extension 64. The bolt stop 65 is held by the pins 66 in the recesses 67 in the carrier 3.

The ejection force accumulator 5 is connected via the spring base 29 on the one hand with the ejection element 4 and on the other hand engages the spring base 30 formed in the carrier 3. The spring base 29 is pivotally connected via the pin 68 with the ejection element 4. In addition, 29 is held in the spring base in another control pin 69 which allows targeted guidance of the spring base 29 in the region 70 of the slide track 18. At the ejection element 4, a rack 12 is formed. The tensioning element 7 is movably coupled to the motion transmission element 8. Specifically, this motion transmission member 8 is formed as a gear 10 which meshes with the rack 11 of the tension member 7 and the rack 12 of the ejection member 4. The motion transmission element 8 is displaceably mounted on the one hand in the guideway 9 formed in the carrier 3 and on the other hand rotatably mounted in the carriage 16. The guideway 9 has two end stops E1 and E2. The carriage 16 in turn is part of the return device 13 for the clamping element 7. In particular, attacks on this carriage 16 of the return force memory 15 at. In addition, this Rückholkraftspeicher 15 is attached at the other end to the formed in the carrier 3 spring base 32. In Fig. 3, the ejection device 1 is shown in the assembled state. The coupling piece 25 is connected to the coupling counterpart 24 in a loose connection. In addition, it can be seen that the clamping element 7 forms the clamping device 6 together with the motion transmission element 8. In addition, this motion transmission element 8 forms the return element 14 simultaneously with the carriage 16. This return element 14 together with the return energy store 15 in turn forms the return device 13. In this FIG. 3, the return energy store 15 - which in this case is designed as a spring, in particular as a tension spring is - in a relaxed position. In contrast, there is the ejection force accumulator 5, which is also designed as a spring, in particular as a tension spring, in the cocked position. The control pin 20 of the locking device 17 is located in the detent recess of the heart-shaped cam track 18, whereby the entire ejection device 1 is in the locked position VS.

In FIGS. 4 to 12, a plan view of the ejection device 1 in various positions is shown on the left-hand side. On the right side, the same plan view is shown, but also the actually not apparent, in each case underlying components are indicated by dashed lines.

In Fig. 4, the ejection device 1 is in the same position as in Fig. 3, namely in the locking position VS. In addition, the movable furniture part 2 is not shown here in the closed position SS. This closed position SS is represented by the coupling counterpart 24, which is indeed attached to the movable furniture part 2. In this locking position VS, the clamping element 7 abuts on the ejection element 4 via the buffer element 33. The arranged on the control lever 19 control pin 20 is located in the detent recess of the heart-shaped cam track 18 of the locking device 17. The ejection force memory 5 is stretched while the return energy storage 15 is relaxed. The latch 61 engages over its receiving recess 63, the extension 64, whereby the coupling and decoupling element 27 is located with its tip 47 in a retracted to the head portion of the coupling piece 25 position. In this position, the coupling force accumulator 40 is tensioned. The coupling force accumulator 40 is held with its two ends in the clamping element 7 and is located in a central region on the coupling and decoupling element 27 at. The coupling device 26 is in the decoupling EK, in which the coupling piece 25 and the coupling counterpart 24 are loosely connected.

If, starting from this closed position SS according to FIG. 4, the movable furniture part 2 is pressed in the closing direction SR, the ejection device 1 reaches the overpressure position ÜS according to FIG. 5. Via the coupling counterpart 24 and the coupling piece 25, the clamping element 7 is activated by this overpressing movement moved in the closing direction SR. About the buffer member 23 and the ejection element 4 is moved against the force of the ejection force memory 5 in the closing direction SR, whereby the control lever 19 and especially its control pin 20 from the detent recess of the cardioid cam track 18 passes through a corresponding deviation bevel in an ejection section of the slide track 18. As a result, the ejection element 4 is no longer locked via the locking device 17 on the carrier 3 but is in an unlocking position ES. On the right side, it can also be seen that the motion transmission element 8 has also been moved up to the end stop E2 of the guideway 9 with this overpressing movement. With this pushing-over movement, the stick 61 was also moved relative to the bolt stop 65, wherein the extension 71 of the bolt 61 has moved past the yielding end 72 of the bolt stop 65 - in the case of lateral loading direction.

As soon as a user releases the movable furniture part 2 starting from the position according to FIG. 5, the ejection force accumulator 5 can relax. As a result, the ejection device 1 first reaches the position according to FIG. 6, which corresponds to a slight open position OS of the movable furniture part 2. It can be seen that the control pin 20 has already moved in its unlocking position ES slightly in the opening direction OR through the ejection section of the slide track 18. Since the ejection force accumulator 5 pulls on the ejection element 4, this ejection element 4 also moves in the opening direction OR relative to the carrier 3. In addition, since the ejection element 4 bears against the clamping element 7 via the buffer element 33, this clamping element 7 also moves in the opening direction OR. Moreover, since the motion transmission member 8 is slidably supported in the guide track 9, the ejection member 4, the motion transmission member 8 and the tension member 7 are moved together relative to the carrier 3 via this first part of the ejection route A. By this movement of the clamping element 7 in the opening direction OR is also the latch disposed thereon 61 taken, whereby the extension 71 on - in this frontal Baufschlagungsrichtung - rigid end 72 of the bolt stop 65 is applied. Thereby, a rotational movement of the bolt 61 is initiated around the bearing 62 in a clockwise direction. The extension 64 is thereby no longer held in the receiving trough 63 of the bolt 61. As a result, according to FIG. 6, the coupling force accumulator 40 has already relaxed and the coupling and decoupling element 27, together with its tip 47, has moved into the head region of the coupling piece 25. As a result, the mutually spaced extensions of the head area can no longer bend to each other and the coupling position K of the coupling device 26 in the form of a positive retention between coupling piece 25 and coupling counterpart 24 is reached.

In Fig. 7, the ejector 1 has already completed the ejection path A. The ejection energy storage 5 has relaxed. The motion transmission element 8 in the form of the gear 10 is located at the end stop E1 of the guideway 9. With this ejection movement of the ejection element 4 and the co-movement of the motion transmission element 8 and the Rückholkraftspeicher 15 was stretched.

Since, as of the open position OS according to FIG. 7, the motion transmission element 8 can no longer move in the opening direction OR with the tensioning element 7 due to the abutment of the motion transmission element 8 on the end stop E1, the further movement of the movable furniture part 2 in the opening direction OR occurs Specifically, the tension member 7 moves further in the direction R1, whereby the motion transmission member 8 rotates counterclockwise. By this rotation of the motion transmission member 8, the ejection member 4 is moved via the rack 12 in the opposite direction R2. As a result, the ejection force memory 5 is stretched again. Thus, the clamping element 7 forms together with the motion transmission element 8, the clamping device 6 for the ejection force memory 5. This ejection force memory 5 is shown in Fig. 8 and also in Figs. 9, 10 and 13 (partially) purely schematically as a solid line to the length to illustrate. In FIG. 8, the extension 64, which simultaneously forms a stop 45 for the coupling and decoupling element 27, abuts the carrier 3. As a result, the predetermined opening path VO is reached. If now further in the opening direction OR is pulled on the movable furniture part 2, the coupling and decoupling element 27 can not move with the coupling piece 25 co-forming clamping element 7. According to FIG. 9, this clamping movement has continued beyond the clamping element 7 so far that the tip 47 of the coupling and decoupling element 27 has completely withdrawn from the head region of the coupling piece 25, as a result of which the coupling device 26 is decoupled (decoupling position EK), so that the coupling counterpart 24 and therefore the movable furniture part 2 is no longer coupled to the ejection device 1. The extension 64 is held again in the receiving trough 63 of the bolt 61. The coupling power storage 40 is charged again. By this clamping movement, the control lever 20 has moved back into a position in the slide track 20, which lies behind the latching recess. In Fig. 9, the entire opening path O has been covered by the ejector 1, which is composed of the ejection path A and the subsequent tensioning path S. According to FIG. 9, the movable furniture part 2 can now be moved freely.

Since now no more forces from the movable furniture part 2 on the ejector 1 act (ie it is no longer active on the clamping element 7 and thus pulled on the ejection element 4), the ejection force memory 5 again briefly and easily relax until, according to FIG. 10, the control pin 20 locked in the detent recess of the heart-shaped slide track 18. As a result, the locking position VS of the locking device 17 or of the ejection element 4 is reached again.

Then begins according to FIG. 11, the return energy storage 15 to relax. Since this Rückholkraftspeicher 15 pulls on the carriage 16 of the return member 14, the ejection element 4 but due to the locking of the locking device 17 is fixed, the motion transmission element 8 begins to move in the form of the gear 10 on the one hand in the guideway 9 in the direction R2 and on the other hand in the carriage 16 in To turn clockwise. As a result of this rotation of the transmission element 8, the tensioning element 7 - in this case twice as fast as the motion transmission element 8 - is also moved in the direction R2. The movable furniture part 2 is still in the open position OS, while the ejection device 1 is already in the locking position VS of the locking device 17.

In Fig. 12, the Rückholkraftspeicher 15 has completely relaxed, whereby the clamping element 7 rests again on the ejection element 4. In this case, the striking of the clamping element 7 is attenuated on the ejection element 4 via the buffer element 33. From the return device 13, the clamping element 7 has been moved in the return position R. In contrast to FIG. 4, the movable furniture part 2 is still in the open position OS in FIG. 12. If the movable furniture part 2 is manually closed again by this open position OS, then in the last closing section the coupling counterpart 24 returns to the coupling piece 25 in a loose connection, whereby the position according to FIG. 4 would again be reached.

In FIG. 13, the individual positions according to FIGS. 4 to 12 are again shown clearly in a sequence. In comparison of the third image with the fourth image of this Fig. 13 it can be seen how according to the invention, the ejection element 4, the motion transmission element 8 and the clamping element 7 via the ejection path A together relative to the carrier 3 are movable.

Claims

claims

1. ejection device (1) for a movable furniture part (2), with

- A, in particular designed as a housing, carrier (3),

an ejection element for ejecting the movable furniture part from a closed position along an ejection path into an open position,

- The ejection element (4) in the opening direction (OR) of the movable furniture part (2) kraftbeaufschlagenden ejection force memory (5), wherein the ejection force accumulator (5) on the one hand on the carrier (3) and on the other hand on the ejection element (4) engages and

- A clamping device (6) for clamping the ejection force accumulator (5), wherein the clamping device (6) with the movable furniture part (2) coupleable clamping element (7) and a, in particular rotatable, motion transmission element (8) between clamping element (7) and ejection element (4), wherein when the ejection force accumulator (5) is tensioned, the tensioning element (7) and the ejection element (4) are movable in mutually opposite directions (R1, R2), coupled by the motion transmission element (8),

characterized in that the ejection element (4), the motion transmission element (8) and the tensioning element (7) are movable relative to the carrier (3) at least over a first part of the ejection path (A).

2. Ejecting device according to claim 1, characterized in that the ejection element (4), the motion transmission element (8) and the clamping element (7) over the entire ejection path (A), preferably by the same distance and without a relative movement to each other, together relative to the carrier (3) are movable.

3. Ejecting device according to claim 1 or 2, characterized in that the ejection element (4), the motion transmission element (8) and the clamping element (7) along a common in the carrier (3) and two end stops (E1, E2) having guide track (9), preferably linear, are displaceable.

4. Ejecting device according to claim 3, characterized in that when tensioning the ejection force accumulator (5), the motion transmission element (8) bears against an end stop (E1) of the guide track (9).

5. Ejecting device according to one of claims 1 to 4, characterized in that the motion transmission element (8) is designed as a gear (10).

6. Ejecting device according to one of claims 1 to 5, characterized in that the clamping element (7) and the ejection element (4) each have a rack (11, 12).

7. Ejecting device according to claim 5 and 6, characterized in that during clamping of the ejection force memory (5), the rack (11) of the clamping element (7) and the rack (12) of the ejection element (4) with the gear as a (10) formed motion transmission element (8) and are movable by the motion transmitting member (8) in mutually opposite directions (R1, R2), preferably in the form of a 1: 1 translation, are movable.

8. Ejecting device according to one of claims 1 to 7, characterized by a return device (13) for moving the clamping element (7) in a return position (R), wherein the return device (13) with the clamping element (7) coupled to the return element (14) and a the Rückholelement (14) acting on Rückholkraftspeicher (15).

9. Ejecting device according to claim 8, characterized in that the return element (14) by the motion transmission element (8) is mitgebildet.

10. Ejecting device according to claim 9, characterized in that the return element (14) comprises a carriage (16) and the gear formed as a (10) and in the carriage (16) rotatably mounted motion transmission element (8).

11.Eußoßvorrichtung according to any one of claims 8 to 10, characterized in that the return element (14) in the carrier (3) formed and two end stops (E1, E2) having guideway (9) is mounted displaceably limited.

12. Ejecting device according to one of claims 1 to 11, characterized in that when pulling the movable furniture part (2) in

Opening direction (OR) of the ejection force memory (5) by the clamping device (6), preferably along a to the ejection path (A) subsequent clamping path (S), can be tensioned.

13. Ejecting device according to one of claims 1 to 12, characterized by a locking device (17) for locking the ejection element (4) in a locking position (VS), wherein the locking device (17) by overpressing the movable furniture part (2) in a behind the Closed position (SS) lying overpressure position (ÜS) can be unlocked.

14. Ejecting device according to claim 13, characterized in that the locking device (17) formed in the carrier (3), preferably heart-shaped, slide track (18), one on the ejection element (4) movable, preferably rotatable, mounted control lever (19) and a in the link track (18) engaging and arranged on the control lever (19)

Control pin (20).

15. Furniture (21) with a furniture body (22), a movable furniture part (2) and an ejection device (1) according to one of claims 1 to 14 for the movable furniture part (2).

16. Furniture according to claim 15, characterized in that the movable furniture part (2) is designed as a furniture door, wherein the furniture door via two hinges (23) on the furniture body (22) is pivotally mounted and the Ejector (1) is arranged at a location spaced from the hinges (23).

17. Furniture according to claim 16, characterized in that the ejection device (1) on one of the hinges (23) opposite region of

Furniture carcass (22) is arranged.