WO2017186736A1

WO2017186736A1 - Ejection device for a movable furniture part, and piece of furniture

Info

Publication number: WO2017186736A1
Application number: PCT/EP2017/059826
Authority: WO
Inventors: Stefan Klaus
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2016-04-28
Filing date: 2017-04-25
Publication date: 2017-11-02
Also published as: CN109072653B; EP3449077B1; ES2754788T3; DE102016107918A1; CN109072653A; EP3449077A1

Abstract

The invention relates to an ejection device (6, 6') for a movable furniture part (3) comprising a drive element (19, 19'), which is preloaded by at least one spring (15) and by means of which the movable furniture part (3) can be moved from a closed position into an open position, wherein the at least one spring (15) can be moved into a loaded position during a closing or opening motion of the furniture part (3) along a displacement distance and the furniture part (3) can be locked with the at least one loaded spring (15) in the closed position, wherein a backstop is provided, which limits a closing or opening motion of the movable furniture part (3) if the loading of the spring (15) during a closing or opening motion of the furniture part (3) is not yet concluded, wherein the backstop has a pinion (14) guided in a guide track (12, 12'), which pinion engages with a gear rack (11, 11') during a closing motion and can be locked by means of a locking element (17). The backstop can thus absorb high holding forces.

Description

Ejector for a movable furniture part and furniture

The present invention relates to an ejection device for a movable furniture part with a biased by at least one spring drive element, by means of which the movable furniture part is movable from a closed position to an open position, wherein at a closing or opening movement of the furniture part along a path, the at least one spring in a tensioned position is movable and the furniture part in the closed position with the at least one tensioned spring can be latched, wherein a backstop is provided which limits an opening or closing movement of the movable furniture part, when the tensioning of the spring during a closing or opening movement of the furniture part not yet completed, as well as a piece of furniture with such a jetting device.

DE 20 2006 012 976 U1 discloses a lockable ejection device which comprises a locking device which prevents ejection of the movable furniture part before completion of the charging process of the energy accumulator. Such a locking device or backstop can be used for example in push-to-open hardware to prevent ejection of the drawer during a closing movement when a force storage device of an ejector is not fully charged. For fixing, a clamping element is wedged with a contact section of a locking device in order to prevent an opening movement. However, the friction and clamping forces can be insufficient, especially in heavier furniture parts, such as loaded drawers.

It is therefore an object of the present invention to provide a discharge device for a movable furniture part, which has a backstop, which can accommodate high holding forces and is simple.

This object is achieved with an ejection device with the features of claim 1.

The ejection device for a movable furniture part according to the invention comprises a backstop, which limits an opening movement of the movable furniture part when the tensioning of the spring is not completed in a closing movement of the furniture part, wherein the backstop in a Guide track guided pinion, which is in an opening or closing movement in engagement with a rack and can be fixed via a locking element. Thus, the setting is made via a compound of the pinion and a gear and the rack, so that high holding forces are provided, which also prevents a return of a heavy drawer without damaging the parts of the backstop. In addition, it is ensured via the engagement of the pinion on the rack, that when releasing the movable furniture part during the clamping process, a comparatively quick setting of the movable furniture part, wherein the backstop is constructed simply with the rack and pinion.

Preferably, the pinion is rotatably guided in the opening or closing direction along the rack. Thereby, the pinion can be moved together with a carriage relative to a guide track on a housing, wherein the engagement of the pinion on the rack for the user is neither acoustically nor tactile felt. The pinion can be slidably mounted on a carriage, wherein the locking element is arranged on the movable carriage. When canceling the clamping operation, a relative movement of the carriage relative to the pinion can be done to block this in its rotational movement and thus to activate the backstop. In this case, a substantially L-shaped cam guide may be formed on the carriage, which allows movement of the pinion in two different directions, in particular at right angles to each other, to be able to guide the pinion in an opening and closing movement in different sections of a guideway. In addition, the pinion can then be displaced relative to the carriage for a set movement.

For a stable fixing of the pinion, the locking element may be formed as a rack section. As a result, a secure engagement in a cancellation of the clamping operation between the pinion and the locking element is provided.

In one embodiment, a guideway formed on a housing for the pinion is formed loop-shaped. The pinion may be movable during a movement of the furniture part in the opening or closing direction along the rack, while in a closing or opening movement, the pinion is guided in another portion of the guideway and thus

spaced from the rack is movable. Preferably, a latching or holding portion is provided on the guide track for the pinion on which the pinion for latching the spring in the latching position can be fixed. The function of locking the spring and the backstop is thus realized by the pinion. With the latching of the spring and the furniture part can be locked in the closed position at the same time. Alternatively, it is possible to form the function of the backstop and the latch separately. For this purpose, a first guide track for an axis of the pinion and a second guide track for a control element of a latching mechanism for latching a slide to the housing may be provided on a housing.

Preferably, the ejection device may be combined with a self-closing device, as known in the art. The self-loading devices may be separate from the ejector or form a unit with the ejector. When closing or opening the drawer, the spring of the ejector is tensioned and after or during the tensioning and locking of the spring, the self-closing device can move the drawer to the closed position.

Preferably, the ejection device may have different charging principles for the at least one spring. This means that the at least one spring of the ejection device can be loaded after opening the movable furniture part, for example when closing. Alternatively, the knock-out device may eject the movable furniture part to a first open position, and then the user may manually move the movable furniture part further in the opening direction to a second open position, such as a drawer. Then, this opening movement can be used from the first to the second opening position for tensioning the at least one spring, so that the backstop in this case can be effective during an opening movement of the movable furniture part.

According to the invention, a piece of furniture is also provided with a movable furniture part which can be moved in the opening direction via an ejection device according to the invention. The movable furniture part is preferably designed as a linearly movable furniture part, in particular as a drawer or sliding door. Alternatively, it is possible to use the ejector for doors or flaps. The invention will be explained in more detail below with reference to two embodiments with reference to the accompanying drawings. Show it :

Figures 1 and 2 show two views of a piece of furniture according to the invention with an ejection device;

FIGS. 3 to 10 show several views of the ejection device in different positions, and FIGS

Figures 1 1 to 1 3 a plurality of views of a second embodiment of an ejection device.

A piece of furniture 1 comprises a furniture body 2, in which a movable furniture part 3 in the form of a drawer can be inserted, wherein a front panel 4 is arranged on an open side of the furniture body 2. The drawer is movably mounted on two pullout guides 5, which are arranged on opposite side walls of the furniture body 2. Each pullout guide 5 is fixed in a side frame 8 of the drawer via a bracket 9 and supports the drawer via a movable running rail. Furthermore, 2 angle-shaped carrier 7 are fixed to the furniture body, which cooperate with an ejector 6 for the movable furniture part 3. By means of the ejection device 6, the movable furniture part can effect an unlocking when the front panel 4 is pushed in towards the furniture body 2 in the closing direction, in order then to eject the drawer in the opening direction by the force of at least one spring. When the drawer is moved in the closing direction, the at least one spring of the ejector 6 is stretched again.

In Figure 2, the ejector devices 6 are mounted on an underside of the bottom of the drawer and cooperate with the angular drivers 7. It is also possible to let the ejector 6 with other movable furniture parts, such as sliding doors, flaps or doors, interact or to fix the ejector 6 to the furniture body 2 or a fixed part of the pullout guide and the ejection of a movable furniture part or on a movable part of the drawer guide arranged to cause driver.

FIG. 3 shows a detailed view of the ejection device 6, which is in the latched closed position. The ejection device 6 comprises a mounted on the bottom of the drawer housing 10 to which a rack 1 1 is arranged, preferably integrally formed. As a rack 1 1 each strip-shaped element can be used that can get into engagement with a pinion, wherein the rack 1 1 instead of teeth and recesses or other stop or support elements may have.

Furthermore, a loop-shaped guide track 12 for the axis of a pinion 14 is provided on the housing 10. The pinion 14 is slidably held on a carriage 13 which is biased by a spring 15. For this purpose, an end 1 6 of the spring 15 is fixed to the carriage 13, while a second end 27 is fixed to the housing 10. As a result, the carriage 13 is biased in Figure 3 to the right, since the spring 15 is formed as a tension spring. The spring 15 can also be arranged differently and be formed for example as a compression spring.

On the carriage 13 there is a projection 19 which is supported on the angular driver 7. The projection 19 forms a drive element to move the movable furniture part after unlocking from the locking position in the opening direction.

In the latching position, the pinion 14 is held by a latching or holding portion 22 on the guideway 12 with the spring 15 tensioned. If the movable furniture part 3 is now pressed in the closing direction, the housing 10 moves relative to the carriage 13, which is supported by the projection 19 on the driver 7. As a result, an unlocking of the latching is effected, and the pinion 14 moves from the latching or holding portion in the guide track 12, as shown in Figure 5. To transmit the forces from the carriage 13 to the movable furniture part 3 and vice versa, a variety of alternatives are known in the art, which can be used here.

After unlocking the carriage 13 can now be moved relative to the housing, wherein the pinion 14 is guided with the axis in a first guide track 12A, which is arranged at a greater distance from the rack 1 1 as a second guide track 12B. In an opening movement of the movable furniture part, the pinion 14 moves in the first guide track 12A, as shown in Figures 6 and 7. The axis of the pinion 14 is guided in a cam guide 18 on the carriage 13, so that the carriage 13 is moved linearly along the housing 10, while the pinion 14 both linearly and perpendicular thereto along the cam guide 1 8 is movable. The pinion 14 can be moved along the guide track 1 2 to an end portion 28 which is adjacent to a loop-shaped portion of the guide track 1 2 is arranged. Then, the carriage 13 is in an end position on the housing 10 and the movable furniture part 3 can move away from the driver 7 and be moved independently of the ejection device 6.

Moves the movable furniture part 3 again in the closing direction, the projection 19 comes against the driver 7 and moves the carriage 1 3 in Figure 8 to the left, so that the pinion 14 is moved out of the end portion 28 and hits against a run-on slope 29, so that the pinion 14 is now guided in the second guide track 1 2B, which is arranged closer to the rack 1 1 as the first guide track 1 2A. As a result, the pinion 14 engages with its teeth in engagement with the rack 1 1 and is now rotated, and due to the low weight of the pinion 14, which may be made of plastic, for example, no noise or forces are felt or audible to the user. If the movable furniture part 3 is moved further in the closing direction, moves the carriage 1 3 relative to the housing 1 0 to tension the spring 1 5. Now, if the movable furniture part 3 is released, so that the tensioning of the spring 15 is broken, a backstop prevents the ejection of the movable furniture part 3. For this purpose, a locking member 1 7 is formed on the carriage, which acts as a rack portion in engagement with the teeth of the pinion 14th can be brought. If the clamping operation is interrupted, pulls the spring 1 5, the carriage 13 in Figure 9 to the right, while the pinion 14 remains due to the cam guide 1 8 on the rack 1 1 in the position, so that formed on the carriage 13 locking element 1 7 in Engagement with the teeth of the pinion 14 passes. Thereby, a rotational movement of the pinion 14 relative to the carriage 1 3 is prevented, and since the pinion 14 is also engaged with the teeth on the rack 1 1, a movement of the pinion 14 and the carriage 13 is blocked relative to the housing 1 0 , An opening movement of the movable furniture part 3 is thus prevented.

If now the movable furniture part 3 to be moved further in the closed position, the user presses the movable furniture part against the force of the spring

1 5 in the closing direction, so that the locking element 1 7 is removed from the pinion 14 again, so that the carriage 1 3 with the pinion 14 further in Closing direction is moved, wherein the pinion along the guide track 1 2B is moved to a latching or holding portion 22 which is formed on the guide track 1 2. If necessary, the pinion 14 can be set again on the locking element 1 7. Each locking of the backstop, the pinion 14 is moved to the L-shaped cam guide 18.

In the latched position of the pinion 14, a slider 20 is in engagement with the axis of the pinion 14, wherein on the slider 20, a detent recess 21 is provided, which is positioned adjacent to a holding portion 22 on the guide track 1 2. By a relative movement of the slider 20 to the holding portion 22, the axis of the pinion 14 is released, which then can get back into the first guide track 1 2A, to effect an opening movement on the ejector 6. The slider 20 is biased by a spring 23 in the latched position, so that after unlocking a second latching of the pinion 14 on the holding portion 22 and the detent recess 21 can take place.

In the embodiment of Figures 3 to 1 0, the locking of the movable furniture part in the closed position and the backstop is implemented by a ne single guide rail 1 2, and it is also possible, this

Separate functions. In FIGS. 1 1 to 1 3, a modified ejection device 6 'is shown, which can be used in a movable furniture part 3 according to FIGS. 1 and 2. The ejection device 6 'comprises a housing 10', on which a rack 1 1 'is formed, which serves as in the previous embodiment for fixing a pinion 14 which is along a guide track 1 2' movable. Adjacent to the pinion 14, a locking element 1 7 in the form of a rack on a carriage 1 3 'is arranged, which is linearly along the housing 10' movable. The carriage 1 3 'is biased by two springs 1 5, which are fixed with one end to the housing 1 0' and with the opposite end to the carriage 1 3 '.

Formed on the housing 10 ', in addition to the guide track 12', is a second guide track 30, into which a control element 31 of a latching mechanism is guided. The guideway 30 is loop-shaped or formed as a "heart curve guide", wherein at one end a latching receptacle 21 'is provided for fixing the control element 31 in a latching position. The latching receptacle 21 'is formed on a slider 20', which by a spring 23 is biased in the latched position. The control element 31 can be latched between a holding section 22 'and the latching receptacle 21'.

In Figure 1, the ejector 6 'is shown in an open position, in which the springs 15 are at least partially relaxed. Now, if the movable furniture part moves in the closing direction, the springs 15 are tensioned, and the pinion 14 moves along the second guide track 12 B ', which is closer to the rack 1 1' arranged as the first guide track 12 A '. Now, if the closing movement is interrupted, the pinion 14 remains in the position on the rack 1 1 'stand, while the carriage 13' is moved by the force of the springs 15 to the right, so that the locking element 17 in engagement with the teeth of the pinion fourteenth reaches, as shown in Figure 13. As a result, a rotational movement of the pinion 14 is blocked, and the catch 7 resting against the projection 19 'is fixed, so that no ejection movement takes place. By a renewed insertion, the locking element 17 is lifted from the pinion 14, so that the pinion can be further moved along the second guide track 12 B '. At the same time, the control element 31 is moved along the guide track 30 until the control element 31 is latched between the holding section 22 'and the latching receptacle 21'. The latching is thus effected by the latching mechanism with the control element 31 and not via the pinion 14, which is guided without latching along the guideway 12 '. On the carriage 13 'is again an L-shaped cam guide 18 for allowing a relative movement of the pinion 14 to the carriage 13' is formed.

If the ejection device 6, 6 'is combined with a self-closing device, the spring 15 can already be latched with the spring loaded before reaching the closed position on the latching or holding section 22, 22'. The closed position may then be e.g. be held by the Selbsteinzugsvorrichtung or another element. The self-closing can also a

Decelerate closing movement of the movable furniture part also. In principle, the closing position need not be predetermined by the latching or holding section 22, 22 'for the spring 15 or the carriage 13. LIST OF REFERENCE NUMBERS

1 furniture

2 furniture carcass

3 furniture part

4 front panel

5 pullout guide

6, 6 'ejection device

7 drivers

8 side frame

9 brackets

10, 10 'housing

1 1, 1 1 'rack

12, 12 'guideway

12A, 12A 'guideway

12B, 12B 'guideway

13, 13 'slide

14 pinions

15 spring

1 6 end

17 locking element

18 curve guide

19, 19 'lead

20, 20 'slide

21 resting recess

21 'locking recess

22, 22 'holding section

23 spring

27 end

28 end section

29 starting slope

30 guideway

31 control

Claims

claims

1 . Ejection device (6, 6 ') for a movable furniture part (3), with a

by at least one spring (15) biased drive element (19, 19 '), by means of which the movable furniture part (3) is movable from a closed position to an open position, wherein at a closing or opening movement of the furniture part (3) along a path the at least a spring (15) is movable into a tensioned position and the furniture part (3) in the closed position with the at least one tensioned spring (15) can be latched, wherein a backstop is provided which an opening or closing movement of the movable furniture part (3) limited when the tensioning of the spring (15) in a closing or opening movement of the furniture part (3) is not yet completed, characterized in that the backstop in a guideway (12, 12 ') guided pinion (14), the is in a closing or opening movement in engagement with a rack (1 1, 1 1 ') and via a locking element (17) can be fixed.

2. ejection device according to claim 1, characterized in that the pinion (14) in the closing or opening direction rotatable along the rack (1 1, 1 1 ') is guided.

3. Ejecting device according to claim 1 or 2, characterized in that the locking element (17) on a movable carriage (13) is arranged, on which the pinion (14) is displaceably mounted.

4. Ejecting device according to claim 3, characterized in that the carriage (13) with the drive element (19, 19 ') is movable together.

5. Ejecting device according to claim 3 or 4, characterized in that on the carriage (13) has a substantially L-shaped cam guide (18) is formed, in which an axis of the pinion (14) is displaceably mounted.

6. Ejecting device according to one of the preceding claims, characterized in that the locking element (17) is designed as a rack section.

7. ejection device according to one of the preceding claims, characterized in that the guide track (12, 12 ') for the pinion (14) is loop-shaped and the pinion (14) during a movement of the furniture part (3) and during a clamping operation of the spring (15) in closing or opening direction along the rack (1 1, 1 1 ') is movable, while in an opening movement, the pinion (14) spaced from the rack (1 1, 1 1') is movable.

8. Ejecting device according to one of the preceding claims, characterized in that the guide track (12) has a latching or holding portion (22) on which the pinion (14) for latching the spring (15) or the carriage (13) can be fixed ,

9. Ejecting device according to one of claims 1 to 7, characterized in that on a housing (10 ') has a first guide track (12') for an axis of the pinion (14) and a second guide track (30) for a control (31) a latching mechanism for latching a carriage (13 ') on the housing (10') is provided.

10. Ejecting device according to one of the preceding claims, characterized in that the ejection device is combined with a separate or integrated self-closing device.

1 1. Furniture with a movable furniture part (3) in the form of a drawer or a sliding door, characterized in that the movable furniture part (3) with an ejection device (6, 6 ') according to one of the preceding claims is movable.

12. Furniture with a movable furniture part as a door or as a flap, characterized in that the movable furniture part with an ejection device (6, 6 ') according to one of the preceding claims is movable.