EP3154398A1

EP3154398A1 - Drive mechanism for a movable furniture part

Info

Publication number: EP3154398A1
Application number: EP15729065.1A
Authority: EP
Inventors: Bernd König; Marc MEUSBURGER
Original assignee: Julius Blum GmbH
Current assignee: Julius Blum GmbH
Priority date: 2014-06-16
Filing date: 2015-05-04
Publication date: 2017-04-19
Anticipated expiration: 2035-05-04
Also published as: CN106455812A; TWI595849B; EP3154398B1; JP2017518116A; US20170095084A1; CN106455812B; MY178802A; TW201603754A; US10143303B2; EP3957209A1; JP6412594B2; ES2900833T3; WO2015192153A1; AT14687U1

Abstract

Drive mechanism (1) for a movable furniture part (2), in particular a drawer, having a first and a second lockable pushing-out mechanism (3a, 3b) and a synchronizing mechanism (4) for synchronizing the two pushing-out mechanisms (3a, 3b), wherein the synchronizing mechanism (4) has a synchronizing rod (5) and a first and a second synchronizing element (6a, 6b), which can be connected to the synchronizing rod (5), and wherein relative movement takes place between the synchronizing elements (6a, 6b) and the pushing-out mechanisms (3a, 3b) during synchronizing operation, wherein, in an active synchronizing mode (S₁), during synchronizing operation, movement is transmitted from the first pushing-out mechanism (3a), via the first synchronizing element (6a), the synchronizing rod (5) and the second synchronizing element (6b), to the second pushing-out mechanism (3b) and, in an inactive synchronizing mode (S₀), the synchronizing rod (5) is removed and the synchronizing elements (6a, 6b) each remain in contact with one of the pushing-out mechanisms (3a, 3b).

Description

Drive device for a movable Möbeltei!

The invention relates to a drive device for a movable furniture part, in particular for a drawer, with a first and a second lockable ejection device and a synchronization device for synchronizing the two ejection devices, wherein the synchronization device comprises a synchronization rod and a first and a second with the

Synchronization rod has connectable synchronization element and wherein between the synchronization elements and the ejection devices takes place during synchronization, a relative movement. In addition, the invention relates to a piece of furniture with a furniture body and a movably mounted on the furniture body furniture part and such a drive device.

In general, numerous applications are already known in the furniture sector, in which a synchronization is usually for the reason to move the movable furniture part evenly and to allow no skewing.

Examples of non-generic synchronizations in furniture flaps are given in WO 201 1/047396 A1 and WO 2013/04061 1 A1. Thus, actuators of flap fittings are synchronized via synchronization devices. In this case, each movement of the adjusting devices is always transmitted to the other adjusting device via the synchronization rod. There is no relative movement between the synchronization rods and the actuators during synchronization. In the second mentioned writing is also of a

so-called touch-latch device for ejecting movable furniture parts the speech, however, is always synchronized via the synchronization rod shown in this document, the movement of the entire adjusting devices and not directly synchronized these touch-latch devices. Rather, each is

Synchronization rod fixed with a corresponding arm each

Actuator connected. There is no relative movement between the

Synchronization rod and this arm of the respective actuator.

Furthermore, synchronization devices are also in non-generic

Side stabilizations known. Reference may be made to EP 2 515 710 B1 become. These side stabilizers serve to synchronize the movements of the drawer rails. It is found in this

non-generic font no kind of ejector. A similar device for lateral stabilization is disclosed in WO 2012/159136 A1. This is mainly about the fact that an overload protection device is arranged between partial waves of a synchronization bar.

In contrast, EP 2 429 339 B1 shows a generic state of the art. In this arrangement for locking and ejecting a movable furniture part synchronization is achieved in that at the end of a

Synchronization rod is arranged a gear-shaped rotary member which meshes with a mounted on the ejector rack. The disadvantage here is that when attaching the synchronization rod, the rotary element complicated to be threaded into a retaining sleeve. This can lead to tooth defects between the teeth of the rotary member and the rack, whereby the entire synchronization rod could be installed even undesirably oblique. In addition, the rack must be quite complex formed with a spring element to adjust the synchronization rod length

allow different distances between the two-sided ejection devices. This complex telescoping of the rack is necessary to allow even the insertion and subsequent holding of the synchronization rod to the two ejectors.

Another generic state of the art does not come from the

previously published Austrian patent application with the application number A 785/2013 (AT 514 865 A1). According to this document, a gear arranged at the end of a toothed rack meshes with a gear forming the slide track

Coupling element (transmission element). Again, the same disadvantages are given when inserting and connecting as in the previous document.

The object of the present invention is therefore to provide a comparison with the prior art improved drive device. In particular, the synchronization should be as simple and uncomplicated as possible. This is achieved by a drive device having the features of claim 1. Accordingly, it is envisaged that in an active synchronization mode during synchronization a movement transfer from the first ejection device via the first synchronization element, the synchronization rod and the second synchronization element to the second ejection device takes place and in an inactive synchronization mode, the synchronization bar is removed and the synchronization elements respectively in contact with a of the

Ejectors remain. In other words, the

Sync elements no longer installed together with the sync bar and also removed again, but the synchronization elements remain associated with the respective ejector. Thus, each remains

Synchronization element always in matching constant contact with the

Ejector, which makes it no unwanted bevel

Assembling, for example, with a tooth defect, can come. In other words, even in an inactive synchronization mode, the synchronization elements always participate in part in the movements of the ejection device. Due to the lack of synchronization bar but no

Forwarding this movement between the two synchronization elements.

In the relative movement between the synchronization elements and, preferably all components, the ejection device can be a

Movement conversion of a rotational movement in a translational movement take place. It is preferably provided that the motion conversion takes place from a rotational movement about a first axis of rotation into a rotational movement about a differently oriented axis of rotation (preferably these axes of rotation are at right angles to one another). Accordingly, it may be particularly preferred that the

Ejecting devices each having a housing and a housing on the movable, preferably rotatable, mounted transmission element, wherein the synchronization elements in each case with one of the transmission elements

are motion coupled. In principle, in this case the movement coupling can be done for example via friction wheels. Preferably, however, the movement coupling is achieved via a positive connection. Accordingly, it is preferably provided in that each synchronizing element has a toothed wheel and each transmission element has a rack-shaped area, the toothed wheels each meshing with one of the rack-shaped areas. It should not be excluded that the synchronization elements are rack-shaped, and possibly translationally movable, formed while the transmission elements are designed as gears.

In general, the ejection device can be configured as desired, as long as an active ejection of the movable furniture part from a closed position in

Opening direction is possible. It is particularly preferred that each

A jetting device a kraftbeaufschlagtes ejection element for ejecting the movable furniture part from a closed position to an open position and a locking device for locking the ejection element in a

Has locking position, wherein by overpressing the movable

Furniture part in a lying behind the closed position Überdrückstellung the

Locking device can be unlocked. Particularly preferably, it is provided that the locking device has a locking pin and a trained in the housing, preferably heart-shaped, slide track. Furthermore, it can be provided that each transmission element in each case a part of

Sliding track, preferably a detent recess of the heart-shaped slide track, mitbildet. Thus, only a small part of the movement of the ejection device is synchronized by the synchronization device, namely the part in which the transmission element is due to the release movement shortly after

Override moves. In other words, it is envisaged that of the

Synchronization device only a portion of the movements of the

Ejectors - preferably only a first portion of a

Opening movement of the movable furniture part, directly on the

Overpressure follows - can be synchronized. In terms of content, reference may be made to the unpublished Austrian patent application A 785/2013.

To easily hold the synchronization elements to the

It is preferred that each of them be provided with discharge devices

Synchronization element in each case via a bearing element on the housing Ejecting device, preferably rotatable and preferably axially fixed, is mounted. Due to the rotatable mounting and the axial fixed, the synchronization element can join every movement of the transmission element, without a misalignment between these parts can occur.

For the good transmission of motion in the active synchronization mode, it is preferably provided that the synchronization rod has a non-circular cross section at both end regions and each synchronization element has a receiving region adapted at least in sections to the outer contour of the end regions of the synchronization rod. With this non-circular cross section, a positive connection between the involved

Achieved components. This non-circular cross-section may for example be triangular. It is also possible that this end region is circular in the majority and only has a flattened portion. However, this non-circular cross section is particularly preferably square. This has the advantage of easy production. In addition, a twisting of the entire synchronization bar by 90 ° is virtually impossible. So far, a tooth distortion was already possible by a slight twisting. In addition, since the gear or the synchronization element is pre-mounted on the ejector, such errors are now excluded.

In operating state, the synchronization element is insoluble with the

Ejector connected. Only the synchronization rod is non-destructively releasably inserted or connected to the synchronization element.

In principle, the synchronization rod can be formed in one piece and just have the corresponding end regions. For example, the

Synchronization rod be designed as a continuous square.

Preferably, however, it is provided that the synchronization rod has a round rod-shaped, preferably over the entire length as a hollow profile with the same inner diameter formed base part and two attachable to the ends of the base part, the end portions forming Ansteckteile. A particular advantage over previous versions of the

Synchronization rod is that the synchronization rod is formed length variably. That is, the synchronization bar does not have to be telescopically formed. Rather, the fact that the receiving area of the synchronization elements is elongated, a certain distance tolerance is achieved. In addition, only a torque transfer is performed via this synchronization bar.

Protection is also desired for a piece of furniture with a furniture body, an am

Furniture carcass, preferably via a pullout guide, movably mounted

Furniture part and a drive device according to the invention. The drive device can be arranged on the furniture body or attached via a carcass rail. Preferably, the drive device is associated with the movable furniture part, particularly preferably mounted on the underside of the movable furniture part.

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 is a perspective view of the furniture,

Fig. 2 is a view of the movable furniture part from below in the active

Synchronization mode,

3 shows a view of the movable furniture part from below in the inactive

Synchronization mode,

FIGS. 4 and 5 show details of FIG. 2,

6 shows a detail of FIG. 3,

7 shows a partial section through the region of

Synchronization rod and a synchronization element,

8 shows the synchronization rod before insertion into a

Bearing element,

9 and 10 a plan view of the storage area of

Synchronization rod with different depths in the

Bearing element protruding end regions, Fig. 1 1 to 13 Details of the ejection device at different positions of the synchronization device.

In Fig. 1, a furniture 20 with a furniture body 21 and two movably mounted therein movable furniture parts 2 is shown. These two movable

Furniture parts 2 are designed as drawers, wherein the upper drawer is in an open position OS and the lower drawer in a closed position SS.

As can be seen in Fig. 2, such a movable furniture part 2 via a

Pull-out guide 22 connected to the furniture body 21, not shown here. On the underside of the movable furniture part 2, in particular on the drawer bottom, ejection devices 3a and 3b are arranged on both sides. These ejection devices 3a and 3b are each at least partially with

Coupled 24 drivers. These drivers 24 are in turn attached via holding plates 23 to the pull-out guides 22, in particular to their cabinet rails 25. When ejecting thus the movable furniture part 2 comes across the two

Ejectors 3a and 3b on the body-fixed drivers 24 and moves the movable furniture part in the opening direction. In order to prevent skewing of the drawer during ejection, especially with wide drawers (from about 60 cm), a synchronization device 4 is provided. These

Synchronization device 4 forms with the two lockable

Ejectors 3a and 3b together drive device 1. In this case, the drive device 1 is in an active synchronization mode S-i.

In contrast, the drive device 1 in Fig. 3 is in an inactive synchronization mode S _0, in which the synchronization rod 5 of

Synchronization device 4 is removed. The two synchronizing elements 6a and 6b remain in this inactive synchronization mode S ₀ each in direct contact with one of the ejection devices 3a and 3b and in particular with the transmission members 8a and 8b. Thus, the

Synchronization elements 6a and 6b - in contrast to the generic state of the art - always associated with the ejection devices 3a and 3b and are not removed with the removal of the sync bar 5 as well. The synchronization elements 6a and 6b are thus preassembled on the ejection devices 3a and 3b and inextricably connected to these in the operating state.

Fig. 4 shows again in detail above all the carcass rail 25 and attached thereto via the support plate 23 driver 24. In the pull-out 22 can also be a retraction device for, preferably damped, pulling the movable furniture part 2 from an open position OS in the closed position SS be provided. The ejection device 3a has a housing 7 as a separate or independent structural unit, on which the bearing element 16 for the

Synchronization device 4 is arranged. This bearing element 16 may be formed integrally with the housing 7.

As can be seen in FIG. 5, however, the bearing element 16 is formed separately from the housing 7. Preferably, the bearing element 16 itself has two components, namely the rotary bearing part 26 and the bearing part 27. On the pivot bearing part 26 is the

Synchronization element 6a rotatably supported and axially fixed or held, while the support member 27 rests above all the synchronization rod 5 and is guided. It can also be seen in this FIG. 5 that the synchronization element 6a has, on the one hand, the toothed wheel 9 and, on the other hand, the receiving region 17. The synchronization element 6a is preferably formed separately from all components (actuating elements) of the ejection device 3a. This is preferred

Synchronizing element 6a integrally formed. In contrast, the

Synchronization rod 5 preferably two-piece or three-piece and has at both end portions E an Ansteckteil 19, which is inserted into the base part 18. Together form the synchronization bar 5 and the two

Synchronization elements 6a and 6b, the synchronization device 4. As already well visible in this Fig. 5, the synchronization rod 5 at both end portions E has a non-circular cross-section. Suitably, each synchronization element 6a and 6b has an outer contour of the end regions E of the synchronization rod 5 at least in sections

adapted receiving area 17 on. In Fig. 6, the synchronization rod 5 is removed, bringing the

Drive device 1 is in an inactive synchronization mode S ₀ . Clearly visible in FIG. 6, the synchronizing element 6a also remains in the inactive synchronization mode S ₀ at the ejection device 3a.

Fig. 7 shows a section through the drive device 1 in the region of

Synchronization rod 5. As can be clearly seen in this Fig. 7, the base member 18 rests on the support member 27. The synchronization element 6a is rotatably mounted in the rotary bearing part 26 and meshes with the transmission element 8a. Furthermore, a Tiefenverstellrad 28 is shown in this Fig. 7.

FIG. 8 shows the synchronization rod 5 with the end region E before insertion into the receiving region 17 of the synchronization element 6a.

In comparison between FIGS. 9 and 10, it can be seen that due to the length of the receiving region 17, the synchronization rod 5 and its attachment part 19 protrude at different depths into the receiving region 17. This enables uncomplicated synchronization of the drive device 1 in the active synchronization mode Si, even if the ejection devices 3a and 3b should be different distances from each other. This is especially the case when different widths drawer side shelves or shelves

be used. This width of the floor is in turn dependent on the thickness of the furniture carcass side wall. Namely, if at the same

Furniture body outer dimension thinner furniture body side walls (16 instead of 19 mm) are used, so are also mounted on the furniture cabinet side walls pull-out guides 22 and thus the drawer side walls by 6 mm further apart, which in turn is compensated by a wider drawer bottom.

FIGS. 1 to 13 also show details of the ejection device 3a.

Essential in the area of the ejection device 3a is the locking lever 29 and the locking pin 13 arranged thereon, which engage in the housing 7

trained heart curved gate track 14 engages or is guided in this. Together, these components form the locking device 12 for the lockable ejector 3a and 3b, respectively. Not shown in these Figs. 1 1 to 13 is the ejection element, which is designed as a carriage movably mounted in the housing. This slide is from a discharge spring

with force. In addition, components are provided to allow a coupling of this movement of the ejection carriage with the driver 24 (catch and coupling element). According to Fig. 1 1, the locking pin 13 is in the only slightly recognizable locking recess 15. This detent recess 15 is also mitges formed by the extension 30. This extension 30 is part of the transmission element 8a. This transmission element 8a is rotatably mounted on the housing 7 about a preferably vertical axis of rotation. At this transmission element 8a and the rack-shaped portion 10 is formed, which is connected to the gear 9 of the

Synchronizing element 6a meshes. The ejection device 3a is due to the position of the locking pin 13 in the locking position VS. The drive device 1 is due to the not yet used

Synchronization rod 5 in the inactive synchronization mode S ₀ .

In contrast, the drive device 1 is shown in FIG. 12 in the active

Synchronization mode Si, since the synchronization rod 5 is inserted via the Ansteckteil 19 in the receiving area 17. The ejector 3a is still in the locked position VS.

On the other hand, according to FIG. 13, an overpressing movement has already been carried out. As a result, the movable furniture part 2 and the locking pin 13 from the detent recess 15 in a (not shown) overpressure position. During subsequent movement in the ejection direction of this locking pin 13 and the extension 30 is taken, whereby the transmission element 8a in

Turning clockwise. With this rotation of the transmission element 8a, a movement of the toothed wheel 9 and thus of the synchronization rod 5 counterclockwise is triggered via the rack-shaped region 10. Compared to FIG. 12, the synchronization rod 5 has rotated almost 270 °. During this rotation, the positive connection between the receiving area 17 and the

Ansteckteil 19 obtained mainly by the fact that the synchronization rod 5 in Bearing element 16 is held axially and radially fixed. At the next

Ejection process is no longer synchronization. Rather, in this synchronization device 4 only the unlocking of the

Locking pin 13 synchronized from the detent recess 15. Of course, upon insertion of the locking pin 13 in the locking position VS, the transmission element 8 is moved back via the lever 31 back into the position shown in FIG.

Depending on which side in an uneven release first unlocking, then this movement is forwarded accordingly to the other side, so that there the extension 30 is also moved away due to the synchronization, whereby the locking pin 13 can no longer hold in the detent recess 15 and thus on both sides at the same time

Ejecting process at the same time or synchronously relaxing

Ejector energy storage (not shown) takes place.

In general, it should be noted that, of course, the corresponding

Components are formed on the other side mirror-symmetrical. Thus, if in the description of only one part of a page reference is made, this applies mutatis mutandis to the other side.

LIST OF REFERENCE NUMBERS

1 drive device

2 movable furniture part

3a first lockable ejection device

3b second lockable ejection device

4 synchronization device

5 synchronization bar

6a, b synchronization elements

7 housing

8a, b transmission elements

9 gear 10 rack-shaped area

12 locking device

13 locking pin

14 slide track

15 detent recess

16 bearing element

17 recording area

18 base part

19a, b plug-in parts

20 furniture

21 furniture carcass

22 pull-out guide

23 retaining plate

24 drivers

25 carcass rail

26 pivot bearing part

27 support part

28 depth adjustment wheel

29 locking lever

30 extension

31 lever

ST active sync mode

S ₀ inactive synchronization mode

SS closed position

OS open position

VS locking position

E end areas

Claims

claims

1 . Drive device (1) for a movable furniture part (2), in particular a drawer, with a first and a second lockable

A jetting device (3a, 3b) and a synchronizing device (4) for synchronizing the two ejecting devices (3a, 3b), wherein the synchronizing device (4) comprises a synchronizing rod (5) and a first and a second synchronizing element (6a, 6b) connectable to the synchronizing rod (5) , 6b) and wherein between the synchronization elements (6a, 6b) and the ejection devices (3a, 3b) takes place during synchronization, a relative movement, characterized in that

in an active synchronization mode (S 1) during synchronization a movement transfer from the first ejection device (3 a) via the first synchronization element (6 a), which

Synchronization rod (5) and the second synchronization element (6b) on the second ejection device (3b) takes place and

- in an inactive synchronization mode (So) the

Synchronization rod (5) is removed and the

Synchronization elements (6a, 6b) each in contact with one of the ejection devices (3a, 3b) remain.

2. Drive device according to claim 1, characterized in that the ejection devices (3a, 3b) each have a housing (7) and a housing (7) movable, preferably rotatable, mounted transmission element (8a, 8b), wherein the synchronization elements (6a , 6b) are in each case movement-coupled to one of the transmission elements (8a, 8b).

3. Drive device according to claim 2, characterized in that each synchronization element (6a, 6b) a gear (9) and each

Transmission element (8a, 8b) has a rack-shaped portion (10), wherein the gears (9) each with one of

mesh rack-shaped areas (10).

4. Drive device according to claim 2 or 3, characterized in that each ejection device (3a, 3b) a kraftbeaufschlagtes ejection element for ejecting the movable furniture part (2) from a closed position (SS) in an open position (OS) and a locking device (12) Locking of the ejection element in a locking position (VS), wherein by overpressing the movable furniture part (2) in a behind the closed position (SS) lying overpressure the

Locking device (12) can be unlocked.

5. Drive device according to claim 4, characterized in that the locking device (12) has a locking pin (13) and in the housing (7) formed, preferably cardioid, slide track (14).

6. Drive device according to claim 5, characterized in that each transmission element (8 a, 8 b) in each case a part of the slide track (14), preferably a detent recess (15) of the heart-shaped slide track (14) mitbildet.

7. Drive device according to one of claims 1 to 6, characterized

characterized in that each synchronization element (6a, 6b) in each case via a bearing element (16) on the housing (7) of the ejection device (3a, 3b), preferably rotatably and preferably axially fixed, is mounted.

8. Drive device according to one of claims 1 to 7, characterized

characterized in that the synchronization rod (5) at both

End regions (E) has a non-circular cross section and each synchronization element (6a, 6b) one of the outer contour of the end regions (E) of the synchronization rod (5) at least in sections

has adapted receiving area (17).

9. Drive device according to claim 8, characterized in that the synchronization rod (5) is a rod-shaped, preferably over the entire length as a hollow profile with the same inner diameter

has formed, base part (18) and two at the ends of the base part (18) attachable, the end regions (E) forming Ansteckteile (19a, 19b).

10. Drive device according to one of claims 1 to 9, characterized

characterized in that the synchronization rod (5)

lengthenveränderlich trained.

1 1 .Antriebsvorrichtung according to any one of claims 1 to 10, characterized

characterized in that of the synchronization device (4) only a portion of the movements of the ejection devices (3a, 3b) - preferably only a first portion of an opening movement of the movable furniture part (2), which immediately follows the overpressure - synchronized.

12. Furniture (20) with a furniture body (21), one on the furniture body (21),

preferably via a pull-out guide (22), movably mounted

Furniture part (2) and a drive device (1) according to one of claims 1 to 1 1.