WO2017186729A1

WO2017186729A1 - Ejection device for a moveable furniture part and piece of furniture

Info

Publication number: WO2017186729A1
Application number: PCT/EP2017/059817
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: CN109068851B; EP3448204B1; ES2801475T3; DE102016107917A1; EP3448204A1; CN109068851A

Abstract

The invention relates to an ejection device (6) for a moveable furniture part (3), comprising a drive element (35) which is tensioned by at least one spring (12) and which moves the movable furniture part (3) from a closed position into and open position, the at least one spring (12) can be moved into a tensioned position along a path during a closing and opening movement of the furniture part (3), and the furniture part (3) can be blocked at the closed position with at least one tensioned spring (12). A return stop limits an opening or closing movement of the moveable furniture part (3) when the spring (12) is tensioned during a closing or opening movement of the furniture part (3) is not yet completed, is provided. The return stop comprises a blocking lever (17) which can be moved along a path (33) and which, during a closing or opening movement of the movable furniture part, can be engaged with a rack (16) when the tensioning process is interrupted. As a result, the return stop maintains the moveable furniture part securely counter to ejection.

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 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 finished yet.

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 fittings to a closing movement

To prevent ejection of the drawer when an energy storage device of an ejector is not fully charged. For fixing, a clamping member is keyed to a abutting portion of a locking device to prevent opening movement. However, the friction and clamping forces can be insufficient, especially in heavier furniture parts, such as loaded drawers.

DE 20 2010 009 796 U1 discloses an ejection device for a movable furniture part, which clamps a force accumulator during a closing movement. In order to avoid ejection in such a clamping operation, a curved spring is provided, which is pressed against a tooth when it rests against a pawl. This is intended to block an opening movement. However, the thin-walled spring can be easily damaged in the opening direction for larger loads.

It is therefore an object of the present invention to provide a discharge device for a movable furniture part, which provides a simple design a stable trained backstop. This object is achieved with an ejection device with the features of claim 1.

According to the invention, the backstop comprises a locking lever which can be moved along a guide track and which can be brought into engagement with a toothed rack during a closing movement of the movable furniture part when the clamping operation is interrupted. This locking lever is forcibly guided over the guideway and can absorb relatively high holding forces when the closing or opening operation is interrupted.

The ejection device preferably has a housing, on which a carriage, which is biased by the at least one spring, is guided linearly with the drive element. By a relative movement of the carriage to the housing then ejection can be effected via the drive element. The locking lever may have a control which is in engagement with a cam guide on the carriage, so that during a relative movement of the carriage to the housing and the locking lever is moved. The locking lever can additionally be moved via a guide element along a guide track on the housing, so that both a rotational position and the position of the locking lever is predetermined on the guide track. It can thereby be achieved that the locking lever does not contact the rack during a closing movement or opening movement, as long as the clamping operation is not interrupted. As a result, a noiseless tensioning of the at least one spring is made possible, and the locking lever only comes into engagement with the rack when an interruption of the clamping operation takes place.

Preferably, the ejection device may be combined with a self-closing device, as known in the art. The Selbsteinzugsvorrichtungen may be designed separately 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 into the closed position and optionally also slow down.

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 Pusher eject the movable furniture part in a first opening position, and then the user can manually move the movable furniture part further in the opening direction to a second opening position, for example in a drawer. Then, this opening movement can be used from the first to the second opening position for clamping the at least one spring, so that the backstop in this case can be effective during an opening movement of the movable furniture part.

The guideway preferably has a loop-shaped section. In this case, a first section of the guide track for the clamping operation can be arranged closer to the rack than a second section of the guide track for the opening movement. The locking lever can be biased by a tension spring in the engaged position, so that when interrupting the clamping operation, the tension spring ensures rapid engagement of the Sperrhe- lever on the rack.

The locking lever preferably has an engagement element. The engagement element is advantageously guided during the clamping operation spaced from the rack, so that locking or grinding noise can be avoided. For this purpose, the engagement element can be guided substantially linearly and parallel to the rack or the locking bar.

In a further embodiment, a latching or holding section for latching the movable furniture part in the closed position is provided on the guide track. The movable along the guideway locking lever can thus take on the one hand the function of the backstop and in addition also the function of a locking of the movable furniture part. For unlocking the movable furniture part is then pressed or pushed and released the locking lever from the locking or holding section.

For a compact construction of the locking lever may be rotatably mounted about the guide member, wherein the guide element between an engagement member for engagement with the rack and a control element is arranged.

The invention is used in particular in a piece of furniture in which a drawer or a sliding door is moved out of a closed position in the opening direction via the ejection device. However, it is also possible to use the ejection device in the case of doors, flaps or other movable furniture parts. enforce. On the furniture may preferably be provided a self-closing, which acts in addition to the ejection device on the movable furniture part before reaching the closed position to the movable furniture part in the

Keep closed position and, if necessary, slow down a closing movement.

The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. Show it:

Figure 1 is an exploded perspective view of a movable furniture part with a discharge device;

Figure 2 is a perspective view of the movable furniture part of Figure 1 in the mounted position;

FIG. 3 shows a detailed view of the ejection device of FIGS. 1, and

FIG. 4 shows a detailed view of the ejection device of FIG. 3 in an opening movement.

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 arranged in a side frame 8 of the drawer and fixed by 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. About the ejector 6 can take place in an indenting the front panel 4 in the closing direction to the furniture body 2 out to unlock the drawer then 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 allow the ejection devices 6 to interact with other movable furniture parts, such as sliding doors, flaps or doors, or the ejection device 6 to the furniture body 2 or a fixed To fix stationary part of the pullout guide and to cause the ejection via a arranged on the movable furniture part or on a movable part of the pullout guide driver. In Figure 3, the ejector 6 is shown, which has a fixable on the movable furniture part 3 housing 10 to which a carriage 1 1 is held linearly movable. The carriage 1 1 is biased by a spring 1 2 to the housing 1 0, for which purpose a first end 1 3 is fixed to the carriage 1 1 and an opposite end 14 on the housing 10. On the carriage 1 1 is a projection 35th provided as a drive element which is supported on the angular driver 7 to eject the movable furniture part 3 by a relative movement of the carriage 1 1 on the housing 1 0. For transmitting the forces of the carriage 1 1 on the movable furniture part 3 and vice versa various alternatives are known in the art, which can be used here. The spring 1 2 is designed as a tension spring, which is fixed to the second end 14 to a holder 1 5 of the housing 1 0. It is also possible to use a compression spring instead of a tension spring, in which case the second end 14 in FIG. 3 would have to be fixed to a holder on the opposite left side.

On the housing 1 0 a rack 1 6 or a locking bar is also formed, on which a locking lever 1 7 as a backstop can be brought into engagement. A rack 1 6 has teeth for locking the locking lever 1 7 and locking bar, which can replace the rack 1 6, has other locking elements, such as openings or recesses. Of the

Locking lever 17 has an engagement element 1 8 in the form of a hook or tooth, which can be inserted into the tooth contour of the rack 1 6. The locking lever 1 7 is mounted on a guide element 1 9 in a guideway 33 movable, which is formed on the housing 10. The guide element 1 9 also forms an axis of rotation for the locking lever 1 7, which is guided with a control element 23 in a cam guide 24 on the carriage 11. The control element 23 is positioned on the opposite side to the engagement element 18. In Figure 3, the ejector 6 is shown in an open position in which the spring 1 2 is at least partially relaxed and the locking lever 1 7 has arrived in an end position on the guide rail 33. If the ejector 6 to be re-tensioned, the carriage 1 1 is moved over the engagement on the angular driver 7 and the projection 35, whereby the Füh- Retention element 1 9, which may be formed for example as a pin, along the end portion 32 of the guide rail 33 is moved until the guide member 1 9 impinges on a run-on slope 25, which moves the locking lever 1 7 in the direction of the rack 1 6. As a result, the engagement element 1 8 enters a position immediately adjacent to the rack 1. 6

Now, if the clamping operation is interrupted, a tension spring 20 pulls the locking lever 17 in an engaged position and thus fixes the locking lever 17 on the rack 1 6. The tension spring 20 is held at one end to a holder 21 on the housing 10 and at the opposite end an attachment point 22 fixed to the locking lever 1 7. The attachment point 22 is located between the guide member 1 9 and the engagement member 1 8. By fixing the locking lever 1 7 on the rack 1 6, the carriage 1 1 can no longer be moved by the force of the spring 1 2 in the housing 1 0 now be so that an ejection movement is interrupted.

If now the movable furniture part 3 is moved further in the closing direction, the carriage 1 1 presses on the cam guide 24 on the locking lever 1 7, and this is unlocked from the rack 1 6. The guide member 1 9 is further moved along the first portion 34 of the guide rail 33 which is adjacent to the rack 1 6 until the guide member 1 9 impinges on a run-on slope 26 and away from the rack 1 6 to a latching or holding portion 27th is moved. Adjacent to the latching or holding section 27 is a slide 28 with a latching receptacle 29, wherein the slide 28 is biased by a spring 30 into the latching position. The locking lever 1 7 with the guide element 1 9 can be latched to the latching or holding portion 27 with tensioned spring 12, so that the movable furniture part 3 is held in the closed position. If the ejection device is combined with a self-closing device, the spring 1 2 can already be latched with the spring loaded before reaching the closing position on the latching or holding section 27. The closed position can then be held, for example, by the self-closing device or another element. In principle, the closing position need not be predetermined by the latching or holding section 27 for the spring 12. To eject the movable furniture part in the opening direction, the movable furniture part is pressed or pushed and thereby the slider 28 against the force of the spring 30 of the locking or holding portion 27 is lifted so that the locking lever 17 and the guide member 1 9 are released so that the Guide member 19 can be moved along a second portion 31 along the guide rail 33, the further away from the rack 16 than the first section 34. The blocking element 17 can now be moved along the guide track 33 to the end section 32 up to an end position. The position of the locking lever 17 during an opening movement is shown in FIG. The locking lever 17 is spaced from the rack 1 6 and is forcibly guided by the guide member 19 and the cam guide 24 on the carriage 1 1. As soon as the locking lever 17 has reached an end position, the movable furniture part can be moved further in the opening direction, independently of the ejection device 6, before the next closing and clamping operation can begin.

LIST OF REFERENCE NUMBERS

1 furniture

2 furniture carcass

3 furniture part

4 front panel

5 pullout guide

6 ejection device

7 drivers

8 side frame

9 brackets

10 housing

1 1 slide

12 spring

13 end

14 end

15 holders

1 6 rack

17 locking lever

18 engagement element

19 guide element

20 tension spring

21 holders

22 attachment point

23 control

24 curve guide

25 run-up slope

26 starting slope

27 holding section

28 slides

29 locking recess

30 spring

31 section

32 end section

33 guideway

34 section

35 lead

Claims

claims

Ejection device (6) for a movable furniture part (3), with a by at least one spring (12) biased drive element (35) 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 which at least one spring (12) is movable into a cocked position and the furniture part (3) in the closed position with at least one tensioned spring (12) can be latched, wherein a backstop is provided, the one Opening or closing movement of the movable furniture part (3) limited when the tensioning of the spring (12) in a closing or opening movement of the furniture part (3) is not yet completed, characterized in that the backstop one along a guideway (33 ) has movable locking lever (17), which in a closing or opening movement of the movable furniture part when interrupting the Spannvor ganges in engagement with a rack (1 6) or a locking bar can be brought.

Ejecting device according to claim 1, characterized in that the

Ejecting device (6) has a housing (10) on which a biased by the at least one spring (12) slide (1 1) with the drive element (35) is linearly guided.

Ejecting device according to claim 2, characterized in that the locking lever (17) has a control element (23) which is in engagement with a cam guide (24) on the carriage (1 1).

Ejecting device according to one of the preceding claims, characterized in that the locking lever (17) via a guide element (19) along the guide (33) formed on the housing (10) is movable.

Ejecting device according to one of the preceding claims, characterized in that the guide track (33) has a loop-shaped section.

6. Ejecting device according to claim 5, characterized in that a first portion (34) of the guide track (33) for the clamping operation closer is arranged on the rack (1 6) as a second portion (31) of the guide path (33) for the opening movement.

7. Ejecting device according to one of the preceding claims, characterized in that the locking lever (17) via a tension spring (20) is biased in the engaged position.

8. Ejecting device according to one of the preceding claims, characterized in that on the guide track (33) has a latching or holding portion (27) for latching the spring (12) is provided in the cocked position.

9. Ejecting device according to one of the preceding claims, characterized in that the locking lever (17) about the guide element (19) is rotatably mounted and the guide element (19) between an engagement element (18) for engagement with the rack (1 6) or the locking bar and a control (23) is arranged.

10. Ejecting device according to one of the preceding claims, characterized in that the locking lever (17) has an engagement element (18).

1 1. Ejecting device according to claim 10, characterized in that the engagement element (18) during the clamping operation spaced from the rack (1 6) is guided.

12. Ejecting device according to claim 1 1, characterized in that the engagement element (18) moves during the clamping operation substantially linear.

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

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

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