EP1314842A1 - Device for opening and closing a movable furniture part - Google Patents

Abstract

The device comprises two release and drive units (6), each one of which has a release part actuated by an external force. The release part is connected to a drive part (8) used to move the furniture part (3). At least one locking part (17) is provided for fixing the movable furniture part in the closed position and releasing it when an external force is applied to the release part(s). The two units are synchronised with each other and are connected in a play-free manner via a transmission mechanism (16).

Description

The invention relates to a device for opening and closing a movable furniture part, in particular a drawer, a furniture door, one Flap, or the like.

Such devices are used to open and close Drawers, doors, flaps and any other movable furniture parts to enable, for example, for aesthetic reasons no handle exhibit. Opening and closing such movable furniture parts, for example by lateral actuation of the front panel or another accessible part, is impractical and does not allow safe operation.

Fittings for opening drawers are known which are actuated by the drawer being pushed in by a predetermined distance and then being extended by a spring mechanism. This function is achieved in a known manner via so-called touch-latch fittings.
Such fittings based on the touch-latch principle are disclosed, for example, in the documents DE 100 08 350 A1, DE 198 21 014 A1 or DE 295 07 917 U1.

Similar locking mechanisms, e.g. in DE 197 53 319 A1 described, use one on a curve or scenery guide based locking mechanism. These mechanisms are relative Elaborate to manufacture.

In the case of fittings known from the prior art, it is disadvantageous that an increased resistance for tensioning the spring mechanism has to be applied in order to insert the drawer.
Furthermore, the devices require a relatively large release path and, in particular, cannot be triggered and locked from any pressure point on a drawer panel or a door etc. with exactly the same short release paths and with the same forces.

The object of the present invention is to provide a device the opening and closing of a movable furniture part by manual Actuation at any point on this piece of furniture with a small opening and Closing pressure and short release path enabled.

This object is achieved according to the invention by independent claim 1 specified features.

According to the invention, the device comprises two triggering and Drive units, each of which can be influenced by external force Release element and a drive element coupled to the release element have to move the furniture part. It is at least one Locking element for locking the furniture part in the closed Position and release of the furniture part depending on an external Force applied to at least one trigger element, the two trigger / drive units synchronously and essentially free of play are coupled to one another by path and force-transmitting means.

Advantageous embodiments and further bindings of the invention are in the dependent claims.

The two release and drive units are advantageously spaced apart from each other on opposite sides of the movable furniture part arranged.

In a preferred embodiment of the invention, each release and drive unit comprises a release lever which is directly or indirectly rotatably mounted on the movable furniture part and acted upon by a spring and which, in cooperation with a stop arranged fixedly on the furniture body, determines the closed and open position of the movable furniture part.
One end of the release lever is in the closed state of the movable furniture part against the stop of the furniture body.

To improve synchronous operation and triggering and drive behavior the device can be provided that the free end of the release lever is fork-shaped and is designed with a stationary pin Stop interacts.

The force exerted by the spring on the release lever, i.e. the Biasing the spring is preferably adjustable to the desired one Opening path of the drawer depending on the drawer size and the To be able to determine drawer dimensions.

The release lever itself is preferably as at least two legs having handlebars, the first leg of the trigger element trains and its second leg over at least one away and force-transmitting connecting element with the second leg of each other release lever of the opposite release and Drive elements is coupled.

The locking element preferably comprises one with one of the two Tripping / drive units temporarily in operative connection spring-loaded latch, which is like a well-known touch-latch lock is working. Two pawls can also be provided each act on one of the release and drive units.

The triggering / drive unit and that are advantageous Locking element on a common, on the movable furniture part too fastening mounting plate arranged, which is covered with a lid can be. The mounting plate and / or the lid is firmly attached to the movable furniture part connected.

An adjustment device can be provided on the release lever, through which the position of the first leg relative to the position of the second leg is changeable. This is a fine adjustment of the stop position of the first leg of the release lever with respect to the stop on Furniture body possible.

To achieve a controlled and reproducible opening process, can according to the invention means for limiting the drive element caused movement of the furniture part can be provided.

As a means of transmission and power transmission between the release levers of the both triggering and drive elements can be mechanical, electro-mechanical, pneumatic or hydraulic means can be provided. To the For example, the mechanical fasteners can be rigid in themselves rigid elements, designed as flexible elements or as a rope-shaped element depending on whether they can only be loaded under tension or under pressure have to.

The device according to the invention offers significant advantages over the Devices known from the prior art.

The movable furniture part opens and closes safely and reliably, regardless of where on the movable furniture part the opening and Closing pressure is exerted. The opening movement is triggered every point of the movable furniture part with almost constant, very short Release path possible. Tilting or one-sided opening or locking of the movable furniture part does not occur.

Through the device according to the invention, the impulse effect of the movable furniture part, i.e. the impact when the furniture part mass hits the furniture body is caught in the closed position without the furniture body, damage the movable furniture part or the mechanism. Doing so also prevents the latch between the jack and the Release lever due to the impact and the resulting change in direction of the movable furniture part (rebound) is unintentionally released.

Für schwere Schubladen geeignet

Für sehr breite Schubladen speziell geeignet-

Bei nicht zu breiten Schubladen ist nur einseitig ein Touch-Latsch Verund Entriegelungselement notwendig.

Der Frontspalt bei Schubladen ist einstellbar durch längenverstellbare Verbindungselemente.

Absolut synchrone Auslösung und Verriegelung

Auslösekräfte wählbar, durch verschiedene Federn oder einstellbare Federkräfte

Notentriegelung gegeben, die Schublade ist immer manuell ausziehbar Nachrüstbarkeit gegeben

Wenige und einfach herzustellende Teile. Die Teile sind links und rechts verwendbar.

niedrige Bauhöhe für Montage unter dem Ladenboden und zwischen den Schubladen.

Further advantages of the device are:

Suitable for heavy drawers

Especially suitable for very wide drawers

If the drawers are not too wide, a touch-latch locking and unlocking element is only required on one side.

The front gap on drawers can be adjusted using length-adjustable connecting elements.

Absolutely synchronous release and locking

Tripping forces selectable, through different springs or adjustable spring forces

Emergency unlocking given, the drawer can always be pulled out manually

Few and easy to manufacture parts. The parts can be used on the left and right.

low height for installation under the shop floor and between the drawers.

When used with drawers, the best functionality of the Device according to the invention in connection with a so-called Infeed device that is modern in almost all drawer runners Drawers are present and are therefore not described in detail. The The release force of the release lever is selected to be greater than the pull-in force of the Retraction device.

Due to the force of the feed device, the sensor ends become Release lever with the touch-latch pawl locked against both sides Stops of the furniture body are pulled and the drawer is thereby securely in Closed position maintained.

Below are several embodiments of the invention with reference described in more detail on the drawing figures. Based on Exemplary embodiments result in further features, advantages and Applications of the invention.

Figur 1:

eine Ansicht von unten auf eine Schublade in geschlossener Stellung mit einer ersten Ausführungsform der erfindungsgemäßen Vorrichtung;

Figur 2:

die Ausführungsform gemäß Figur 1 bei mittels der Vorrichtung geöffneter Stellung der Schublade;

Figur 3:

eine gegenüber den Figuren 1 und 2 leicht abgewandelte Ausführungsform mit Zugfeder als Kraftspeicher;

Figur 4:

eine vergrößerte Ansicht der erfindungsgemäßen Vorrichtung gemäß den Figuren 1 und 2;

Figur 5:

eine perspektivische Ansicht der erfindungsgemäßen Vorrichtung gemäß den Figuren 1, 2 und 3;

Figur 6:

eine weitere, abgewandelte Ausführungsform der erfindungsgemäßen Vorrichtung mit Zugfeder als Kraftspeicher und gabelförmigem Ausrückhebel, bei geschlossener Schublade;

Figur 7:

die Ausführungsform gemäß Figur 6 mit Torsionsfeder als Kraftspeicher, bei geöffneter Schublade;

Figur 8:

eine Ansicht der Vorrichtung gemäß Figur 4, jedoch mit zweiteiligem, in sich verstellbarem Ausrückhebel;

Figur 9:

die Ausführungsform gemäß Figur 8, bei geschlossenem Deckel, mit Rastvorrichtung zur Einstellung der Federspannung;

Figur 10:

eine gegenüber der Figur 8 abgewandelte Ausführungsform mit zweiteiligem, in sich verstellbarem Ausrückhebel in verriegelter Stellung;

Figur 11:

die Ausführungsform gemäß Figur 10 mit zweiteiligem, in sich verstellbarem Ausrückhebel in geöffneter Stellung;

Figur 12:

eine Kopplung der Auslöse- und Antriebselemente mittels zwei über Kreuz geführten Verbindungselementen;

Figur 13:

eine Kopplung der Auslöse- und Antriebselemente mittels einem auf Zug und Druck belastbaren Verbindungselement;

Figur 14:

eine Kopplung der Auslöse- und Antriebselemente mittels einem kurzen, mittleren Verbindungselement;

Figur 15:

eine direkte Kopplung der Auslöse- und Antriebselemente mittels Langlochführung;

Figur 16:

eine Kopplung der Auslöse- und Antriebselemente mittels Zahnstangengetriebe;

Figur 17:

eine Kopplung der Auslöse- und Antriebselemente mittels Zahnriemengetriebe;

Figur 18:

eine Darstellung der erfindungsgemäßen Vorrichtung mit Mitteln zur Begrenzung des Öffnungsweges.

It shows:

Figure 1:

a bottom view of a drawer in the closed position with a first embodiment of the device according to the invention;

Figure 2:

the embodiment of Figure 1 with the device open position of the drawer;

Figure 3:

a slightly modified embodiment compared to Figures 1 and 2 with tension spring as an energy store;

Figure 4:

an enlarged view of the device according to the invention according to Figures 1 and 2;

Figure 5:

a perspective view of the device according to the invention according to Figures 1, 2 and 3;

Figure 6:

a further, modified embodiment of the device according to the invention with tension spring as an energy store and fork-shaped release lever, with the drawer closed;

Figure 7:

the embodiment of Figure 6 with torsion spring as an energy store, with the drawer open;

Figure 8:

a view of the device of Figure 4, but with two-part, adjustable release lever;

Figure 9:

the embodiment of Figure 8, with the lid closed, with locking device for adjusting the spring tension;

Figure 10:

an embodiment modified from FIG 8 with a two-part, adjustable release lever in the locked position;

Figure 11:

the embodiment of Figure 10 with two-part, adjustable release lever in the open position;

Figure 12:

a coupling of the triggering and drive elements by means of two cross-connecting elements;

Figure 13:

a coupling of the triggering and drive elements by means of a connecting element that can be subjected to tensile and compressive stress;

Figure 14:

a coupling of the trigger and drive elements by means of a short, middle connecting element;

Figure 15:

direct coupling of the release and drive elements by means of an elongated hole guide;

Figure 16:

a coupling of the trigger and drive elements by means of a rack and pinion gear;

Figure 17:

a coupling of the trigger and drive elements by means of toothed belt gear;

Figure 18:

a representation of the device according to the invention with means for limiting the opening path.

The exemplary embodiments described relate exclusively to Movable furniture part in the form of a drawer, which in a known manner is arranged extendable in a furniture body. Let of course the embodiments in the same or modified form to others movable furniture parts, such as furniture doors, flaps, etc. transferred.

Figures 1 and 2 show a bottom view of a drawer 3, which in in a known manner, for example by means of pull-out rails in a furniture body 1 is held. From the drawer 3 is the drawer bottom 4 and the Drawer front 5 visible.

According to the invention are close to the side edges of the drawer bottom 4 the drawer front 5, trigger and drive elements 6 are arranged. The Release and drive elements 6 comprise a mounting plate 7 on which an approximately T-shaped release lever 8 is rotatably arranged in a pivot bearing 9 is. In the area of the pivot bearing 9, a torsion spring 10 is arranged, which exerts a spring force on the release lever 8, so that one Trigger element forming leg 11 with its feeler roller 12 on one Stop 2 of the furniture body 1 rests. On the leg 11 is also a Locking projection 13 is provided, in which a spring-loaded, pivotable Pawl 17 engages as a single element a known touch-latch fitting trains and holds the release lever 8 in a cocked position. At the ends of the legs 14 of the release lever 8 are Connecting elements 16 articulated. Connect the connecting elements 16 the leg 14 each with the leg 14 of the release lever 8 of the opposite, other trigger and drive unit 6. That means that the two opposite release levers 8 free of play and synchronously are interconnected so that the movement of a release lever 8 in is transferred to the other release lever 8 in the same way.

Now the drawer 3 is based on that shown in Figure 1 Initial state slightly pushed in by arrow 18, see above the release levers 8 are pivoted slightly because their feeler rollers 12th rest on the stops 2 of the furniture basket 1. By moving the Release lever 8 releases the pawl 17 from the locking projection 3 and gives the Release lever 8 free, due to the force of the spring 10 at the stop 2 press the furniture body 1, the drawer 3 due to the spring force extends to the end position of the release lever in the direction of arrow 19, as in Figure 2 is shown. In this position the drawer is freely movable and can be opened completely by the user. It is important that the manual Push in the drawer to trigger the device on any one Place of the front panel can be done as every movement of the drawer due to the connecting elements 16 to the same extent on both tripping and Drive units 6 is transmitted, so that the pawl 17 is always safe reacts and releases or locks the assigned release lever 8.

When the drawer is closed, the sensor rollers 12 hit the release lever 8 on the stops 2 on the furniture body 1. The release lever 8 are at further movement of the drawer swung in, the spring 10 tensioned becomes. In the release position, that is, in the almost fully inserted position, starts the pawl 17 a release lever 8 and locked in, with the Connecting elements 6, the other release lever 8 is locked. In this position, the drawer is preferably by in the Known pull-in devices provided for pull-out guides (not shown) kept closed.

FIG. 3 shows the embodiment of the device according to FIGS. 1 and 2, however, the torsion spring 10 of the release lever 8 by a tension spring 22nd is replaced, which fulfills the same function.

FIG. 4 shows an enlarged view of a triggering and drive element 6 according to Figures 1 and 2. You can see the mounting plate 7 on which of Release lever 8 is rotatably mounted in the pivot bearing 9 and through the Torsion spring 10 is biased. The leg 11 of the release lever supports from the sensor roller 12 on the stop 2 of the furniture body 1. The spring-loaded pawl 17 is rotatably mounted in the pivot bearing 20 and also biased by a torsion spring 23. The pawl 17 engages in the Locking projection 13 of the release lever 8 a. On the leg 14 of the Release lever 8 are the connecting elements 16 in a rotary bearing 21 pivoted.

Figure 5 shows the release and drive element 6 in a perspective View, recognizing that the entire facility is preferably of a cover 15 is covered, which together with the mounting plate 17 on Bottom 4 of the drawer 3 is attached.

The design of FIGS. 6 and 7 corresponds in principle to the design of Figures 1 and 2, but here the release lever 8 in turn a tension spring 22 is biased and a fork-shaped leg 24 have, which engages in a stop pin 25 on the furniture body 1. By the fork-like leg 24 and the associated stop pins 25 can be achieve an even better synchronous movement of the release lever 8.

Figure 8 shows an embodiment of the release and drive element 6 with a two-part release lever 26. The release lever comprises a sensor part 27, on which the sensor roller 12 is arranged, and a control part 28 which the connecting elements 16 are articulated. The control part 28 has a pivot bearing 29, by means of which the sensor part 27 is pivotally mounted is. At a distance from the pivot bearing 29, the sensor part 27 has an elongated hole 30 on, in the one arranged on the control part adjusting screw with eccentric pin intervenes. If the adjusting screw 31 is rotated, the sensor part pivots 27 around the rotary bearing 29, the sensor roller 12 moving in the direction of the arrow 32 can be adjusted. This allows the gap spacing of the drawer front 5 determine for furniture body 1. Furthermore, the stop position of the a release lever 8 with the stop position of the opposite Adjust release lever 8.

FIG. 9 shows the control part 28 of the release lever 26 shown in FIG. 8, which is pivotally attached to the mounting plate 7. The release lever 26 will biased by a torsion spring 33, which in this embodiment has an extended adjusting lever, by means of which the spring force, i.e. the bias of the spring 33 is adjustable. For this purpose, the cover 15 has a Toothing 34 on, which makes it possible to move the adjusting lever of the spring 33 in different positions of the toothing 34 engage, each position corresponds to a specific bias of the spring 33. Thus, the on Release lever 8 total force exerted. The gearing 34 with adjustable spring 33 can also be clearly seen in FIG. 18.

The bearing for the connecting elements 16 can also be seen in FIG Leg 28, which may have an eccentric bush 35, whereby compensate for the differences in length of the connecting elements.

Figures 10 and 11 show a further embodiment of the trigger and Drive element 6 with two-part release lever 36. There are each shown two possible end positions of the release lever 36. The Release lever 36 comprises a sensor part 37 with a sensor stop 38 instead of a feeler roller. The sensor stop 38 preferably consists of a noise-absorbing, soft plastic or rubber material. The Control part 40, on which the connecting elements 16 are articulated, points at front end of a rotary bearing 39, in which the sensor part 37 is rotatable is stored. The sensor part 37 is by means of a snap connection 43 with the Control part 40 connectable. An elongated hole 41 is arranged in the control part 40, an eccentric pin of an adjusting screw 42 engaging in the elongated hole 41, which is held in the sensor part 37. As already in connection with FIG. 8 has been described, is an adjustment by turning the adjusting screw 42 the position of the sensor stop 38 in relation to the stop 2 of the Furniture body 1 possible. You can also see that with an adjustment lever trained torsion spring 33, which is an adjustment of the spring force of the Spring 33 allowed. Figure 10 shows the release lever in the engaged position Pawl 17 with the drawer closed, whereas FIG. 11 shows the release lever in shows its end position with the drawer open.

FIGS. 12 to 17 show different variants and configurations of the Connection elements 16 shown. Figure 12 shows those in the previous Figures shown T-shaped release lever 8 with connecting elements in Form of a double cross-connection, each Connection element 16 is only loaded on train. The Connecting elements 16 can be in the form of strips or rods or but be designed as cables or bow pulls.

Figure 13 shows approximately L-shaped release lever 44 with a simple Cross-connection by means of a loaded under tension and pressure Connecting element 16, which in this embodiment, for example, as rigid profile element is formed.

In Figure 14 are straight, about halfway in the bearings 9 stored Release lever 45 shown, the one as a short, middle handlebar formed connecting element 16 are interconnected.

In FIG. 15, straight release levers are designed similar to those in FIG shown, the one release lever 46 has a pin which in a Elongated hole of the other release lever 47 engages and the two release levers 46 and 47 coupled together to transmit and transmit power.

Figure 16 shows the possibility of coupling the release lever by means of a Rack 49, both release levers 48 one fixed to the lever Have gear and are rotatable about the axis of rotation 9.

Figure 17 shows a cross connection by means of chain, toothed belt or the like, wherein a release lever 50 is provided with a gear, which is connected to a gear 52 via a toothed belt or a chain 51. The gear 52 meshes with another gear of the opposite Release lever 50 and thus ensures the necessary reversal of direction for one synchronous movement of the release lever 50.

Figure 18 shows a way to limit the automatic Opening movement of the drawer by the spring-loaded release lever 8. You can see the pull-out guide 53 of the drawer and a Drawer bottom (not shown) attached trigger and drive element 6. On the cover 15 of the release and drive element 6 is approximately parallel to Pull-out guide 53 aligned leaf spring 54 attached. This leaf spring 54 moves together with the drawer and the trigger and Drive element 8 parallel to the pull-out guide 53. The automatic The drawer is now opened by the leaf spring after a certain opening path stopped by a bevel 55 of the Leaf spring on one of the pull-out guide 53 or the furniture body arranged stop 56 strikes. The drawer can now be under Overcoming the spring tension of the leaf spring 54 manually are pulled out, the stop bevel 55 over the stop 56th slides and releases the drawer. One slides when the drawer is pushed in Entry slope 57 of the leaf spring 54 with little resistance over the Stop 56. The leaf spring 54 is now able to Stop opening the drawer.

Zeichungslegende

1

furniture body

2

attack

3

drawer

4

drawer base

5

drawer front

6

Release and drive element

7

mounting plate

8th

Release lever (T-shaped)

9

pivot bearing

10

torsion spring

11

leg

12

probe role

13

catch projection

14

leg

15

cover

16

fasteners

17

pawl

18

arrow

19

arrow

20

pivot bearing

21

pivot bearing

22

mainspring

23

torsion spring

24

fork legs

25

stop pin

26

Release lever (two parts)

27

sensor part

28

control part

29

pivot bearing

30

Long hole

31

Adjusting screw with eccentric

32

arrow

33

Torsion spring with adjusting

34

gearing

35

Exztenterbuchse

36

Release lever (two parts)

37

sensor part

38

probe stop

39

pivot bearing

40

control part

41

Long hole

42

Adjusting screw with eccentric

43

locking connection

44

Release lever (L-shaped)

45

Release lever (straight)

46

Release lever (with pin)

47

Release lever (with slot)

48

Release lever (with gear)

49

rack

50

Release lever (with gear)

51

toothed belt

52

gear

53

pull-out guide

54

leaf spring

55

stop bevel

56

attack

57

run-in slope

Claims (12)

Device for opening and closing a movable furniture part, in particular a drawer, door or flap,
characterized by : two release and drive units (6), each having a release element that can be influenced by external force and a drive element (8) coupled to the release element for moving the have movable furniture part (3), and at least one locking element (17) for locking the furniture part (3) in the closed position and releasing the furniture part depending on an external force on at least one trigger element (8), the two release and drive units (6) being coupled to one another synchronously and essentially without play by means of path and force-transmitting means (16). Device according to claim 1, characterized in that the triggering and drive units (6) are arranged on opposite sides of the movable furniture part (3). Device according to one of the preceding claims, characterized in that each triggering and drive unit (6) comprises a release lever (8) which is rotatably mounted directly or indirectly on the movable furniture part and acted on by a spring (10) and which, in cooperation with a lever on the furniture body ( 1) fixed stop (2) determines the closed and open position of the movable furniture part (3). Device according to one of the preceding claims, characterized in that one end of the release lever (8) in the closed state of the movable furniture part rests against the stop (2) of the furniture body (1). Device according to one of the preceding claims, characterized in that the bias of the spring (10) is adjustable. Device according to one of the preceding claims, characterized in that the release lever (8) is designed as a link having at least two legs (11; 14), the first leg (11) of which forms the release element and the second leg (14) of which has at least one path and force transmitting connecting element (16) is coupled to the second leg (14) of the respective other release lever. Device according to one of the preceding claims, characterized in that the locking element comprises a spring-loaded pawl (17) which is temporarily operatively connected to one of the two triggering / drive units (6). Device according to one of the preceding claims, characterized in that the end of the first leg (24) of the release lever is fork-shaped and interacts with a stop designed as a fixed pin (25). Device according to one of the preceding claims, characterized in that the release / drive unit (6) and the locking element (17) are arranged on a common mounting plate (7) to be fastened to the movable furniture part (3). Device according to one of the preceding claims, characterized in that an adjustment device is provided on the release lever (8), by means of which the position of the first leg (27; 37) can be changed relative to the position of the second leg (28; 40). Device according to one of the preceding claims, characterized in that means (54, 56) are provided for limiting the movement of the furniture part (3) caused by the release and drive unit (6). Device according to one of the preceding claims, characterized in that the means (16) for path and power transmission are mechanical, electro-mechanical, pneumatic or hydraulic means.

Images