WO2006061331A1

WO2006061331A1 - Drawer slide

Info

Publication number: WO2006061331A1
Application number: PCT/EP2005/056243
Authority: WO
Inventors: Andreas KÄTHLER
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2004-12-10
Filing date: 2005-11-25
Publication date: 2006-06-15
Also published as: KR101284784B1; CN100544635C; JP2008522690A; CN101072525A; ES2551702T3; RU2007124077A; RU2366351C2; JP4620127B2; KR20070089728A; DE102004059802A1; EP1819256A1; EP1819256B1

Abstract

The invention relates to a drawer slide (1) which comprises at least three slide rails (2, 3, 4), that can be displaced in relation to each other by means of rolling bodies or ball bearings (18, 20, 22, 24). A first slide rail (2) is linked with an extensible furniture part, a second slide rail (3) is the center guide slide rail, and a third slide rail (4) is linked with the body of the furniture, the first, second and third slide rail (2, 3, 4) being fastened the one to the other so as to be displaced. The slide is also provided with a retracting device (6) by means of which the first slide rail (2) is displaced along a partial stretch of the pull-in movement into a closed position by virtue of the force of a spring. The slide is provided with means for synchronizing the movement of the slide rails (2, 3, 4) mounted on opposite sides in a controlled manner. The means for synchronizing may comprise a stop (9) which is effective before the start of the partial stretch of the retracting device.

Description

Drawer slide device

The present invention relates to a drawer guide device according to the preamble of claim 1.

A drawer guide device is known from EP 391 221, in which a pull-in device is effective on a partial route. This retraction device includes a spring to bias the movable furniture part in the closed position. With this construction it can happen that, despite a synchronization roller, slippage can occur between the rails which can be moved relative to one another or between the cages or spacers which position the rolling or rolling elements. This slip can result in the drawer not closing. The spring of the feed device is too weak to overcome the sliding friction between a roller on a middle rail and another rail. Therefore, it can happen that the middle rail does not run exactly half the way of the rail mounted on the drawer and misalignments occur.

EP 1 161 164 describes a pull-out guide set in which the movement damper is fastened on the pull-out rail and the free end of which is coupled to a slide seated on this rail. When retracting, this slide bumps against a mounting rail or a central rail, which dampens the closing movement. However, a forced synchronization of the movement of the rails, for example to correct an inclined drawer, is not shown.

EP 1 393 654 discloses a pull-out guide set for drawers in which carriages are used on which at least two rails roll against one another. In order to avoid an offset of the carriages relative to the rails, the carriages are temporarily locked and then released by the movement of the rails. However, this solution is comparatively complex mechanically. It is therefore an object of the present invention to provide a drawer guide device which ensures that a drawer is securely closed and slip which occurs can be corrected.

This object is achieved with a drawer guide device with the features of claim 1.

According to the invention, the drawer guide device comprises means for forcibly synchronizing the running movement of the rails which can be moved relative to one another, so that it is ensured that the middle rail is exactly half

Way runs like the extendable first rail. When slippage occurs between a roller mounted on the central guide rail and the first rail, the means for synchronizing can be used to achieve a desired alignment of the drawer and, if necessary, also to prevent the drawer from tilting. Even with jerky movements of the drawer or other reasons for slippage, an inclined position or an end position of the drawer spaced from the furniture body is avoided. A defined running movement is thus predetermined by the components of the drawer guide device.

According to a preferred embodiment of the invention, the means for synchronizing comprise a stop which is active before or at the beginning of the section of the feed device. As a result, the pull-in device can be used to additionally achieve a precise position of the rails at the beginning of the effectiveness of the pull-in device, wherein the closing movement of the drawer can be used for a possible corrective movement. If no correction movement is required, the means for synchronizing the running movement of the rails can remain inactive and do not hinder the closing process.

The stop can be formed on one of the rails or fixed there. A roller is preferably mounted on the middle guide rail, which abuts the first and third rails, that is to say couples these rails to one another, the middle guide rail being moved at half the speed of the extendable first rail due to the roller. On the middle one A guide rail is preferably fixed, which interacts for synchronization with a counter-stop. The counterstop can be formed on a driver of the feed device. By arranging the stop on the middle guide rail, it is possible to allow the stop to act in both directions, and thereby to compensate for slippage both in the pull-out direction and against the pull-out direction.

According to a further embodiment of the invention, the pull-in device on a driver comprises a receptacle into which an activator coupled to the first rail engages.

Preferably, a damping or braking device is also provided, which is effective against the direction of insertion over a partial distance, the damping or. Braking device is connected on the one hand to the second rail and on the other hand to the first rail. In addition to self-closing, this can also result in a

Damping of the closing movement can be achieved to avoid slamming the drawer. The invention is explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. Show it:

Figures IA to 9 A side views of a drawer slide device according to the invention in different positions;

Figures IB to 9B are partially sectioned plan views of the drawer guide device according to Figures IA to 9 A, and

Figures IC to 9C perspective views of the drawer guide device according to Figures IA to 9 A.

In the figures IA to IC a drawer guide device 1 is shown, as it is mounted on one side of a drawer on a fixed furniture body. A corresponding drawer guide device 1 can of course be provided on both sides of the drawer, the right and left sides of the drawer guide device 1 being constructed in mirror image. Available However, only the left side of the drawer guide device 1 is shown without a centrally located drawer.

The drawer guide device 1 comprises a first rail 2, which is connected to a pull-out drawer. The first rail 2 is coupled via a central guide rail 3 to a third rail 4, which is fixed to a furniture body. The rails 2 and 4 and the guide rail 3 are slidably held against each other via rolling and rolling elements 18, 20, 22, and 24. In principle, however, the invention can also be used for drawer guide devices in which three or more than three rails 2, 3 and 4 are provided.

A roller 5 is mounted on the middle guide rail 3, which rolls both on the rail 2 and on the rail 4, so that the middle guide rail 3 is moved at half the speed like the rail 2 relative to the stationary rail 4.

A pull-in device 6 is provided on the rail 4, which interacts with a web-shaped activator 7 in order to pull the drawer into the furniture body over a partial distance before the closed position of the drawer. For this purpose, the pull-in device 6 comprises a driver 8, which can be coupled to the activator 7, the activator 7 being fixed on the movable rail 2.

The retraction device 6 comprises on a housing 14 a curve guide 11 which is bent at one end section, so that a driver 8 is moved along the curve guide 11 and is pivoted and parked on the curved section 12. In the parked position, a spring 13 connected to the stationary driver 8 is tensioned, the spring 13 being fixed to the housing 14 at the end facing away from the driver 8.

In order to be able to synchronize the running movement of the rail 3 relative to the rail 4 mounted on the furniture body, a protruding stop 9 is formed on the central guide rail 3, which can be passed through an opening 15 in the housing 14 of the pull-in device and when closing can interact with the activator 7 designed as a web-shaped driver. The function of the means for synchronizing the running movement is explained below on the basis of the individual positions:

In Figure IA to IC, the drawer guide device 1 is in a closed

Position shown, in which rolling or rolling elements 18, 20, 22 and 24, which can be held in a cage, rest against corresponding stops 17, 19, 21 and 23 on the rails 2 and 4. The drawer is held in the closed position by the force of the spring 13.

If the drawer is now opened, the first rail 2 moves to the left in accordance with FIGS. 2A to 2C, the web-shaped activator 7 also moving the driver 8 to the left against the force of the spring 13. The driver 8 is guided in the curve guide 11. Due to the roller 5, the middle guide rail 3 moves at half the speed of the rail 2, so that the stop 9 is moved only half as fast as the driver 8.

FIGS. 3A to 3C show the position of the drawer guide device 1 in which the activator 7 leaves the receptacle 16 on the driver 8. For this purpose, the driver 8 has been pivoted in the curve guide 11 on the section 12, the driver 8 being fixed by the pivoting in a parking position in which the spring 13 remains tensioned. If there is no slippage between the rails 2, 3 and 4, the driver 8 arrives in the parking position, the stop 9 being contacted by the driver 8 with a counter-stop 10, but not due to the higher displacement

Speed of the driver 8 comes to the stop 9. The stop 9 is rather moved through an opening 15 in the housing 14 of the feed device 6. When the guide rail 3 runs correctly, the stop 9 leaves the opening 15 in the housing 14, while the driver 8 remains in the parking position with the counter-stop 10.

As can be seen in FIGS. 4A to 4C, the rail 2 can now be moved further into the open position, the activator 7 receiving a receptacle 16 leaves the driver 8 and moves further to the left. The stop 9 continues to move at half the speed of the activator 7.

The open position of the drawer guide device 1 is shown in FIGS. 5A to 5C. The rolling elements 22 can rest against an end stop 25, which limit the maximum extension path.

If the drawer is now moved back into the closed position, the positions described in the opening process can be run through again according to FIGS. 1 to 4, provided that no slippage has occurred between the rails 2, 3 and 4. In the following, however, it is assumed that due to a movement of the drawer or other reasons, there has been a certain displacement of the rails 2, 3 and 4 relative to one another and thus there is slippage, in particular the guide rail is arranged too far in the furniture body in relation to the correct path .

The drawer is then moved towards the closed position until the position shown in Figures 6A to 6C is reached. In contrast to the position in FIGS. 3A to 3C, the stop 9 and the activator 7 are positioned offset from one another with respect to the original arrangement, the stop 9 first abutting the driver 8 in the region of the counterstop 10 before the activator 7 Record 16 has reached. Due to the kinetic energy when closing the drawer, however, the sliding friction required to move the rail 2 relative to the guide rail 3 and rail 4 can be easily overcome, so that the roller 5 is slipped. The middle guide rail 3 is held stationary for a short time by the stop 9, since the stop 9 bears against the counter stop 10 of the driver 8 and the driver 8 remains in the park position due to the tilted position.

As a result, the position shown in FIGS. 7A to 7C can be achieved in that the rail 2 is displaced relative to the guide rail 3 and thus the activator 7 rests on the driver 8 and can pivot it again from the parking position. The activator 7 ensures a pivoting movement of the driver 8 so that it is moved out of the parking position. In a further step, the pull-in device 6 is activated, the driver 8 being moved again along the curve guide 11 and the drawer being biased into the closed position by the spring 13 (FIGS. 8A to 8C). Since the stop 9 only moves at half speed relative to the activator 7 and the driver 8, the two components move away from each other again.

FIGS. 9A to 9C again show the closed position of the drawer guide device 1, in which the rolling or rolling bodies 18, 20, 22 and 24 rest against corresponding stops 17, 19, 21 and 23 on the rails 2 and 4. The drawer is held in the closed position by the spring 13 of the pull-in device 6.

In the exemplary embodiment shown, no damping or braking device is shown, which can be provided in particular in the region of the section in which the pull-in device 6 is also effective. Corresponding damping devices are known and can additionally be installed or coupled to the feed device 6.

The means for forcibly synchronizing the running movement can be effective in both directions, the synchronization also being able to take place in the position shown in FIGS. 3A to 3C when the driver 8 comes to rest against the stop 9 with the counter-stop 10.

Claims

1. Drawer guide device (1) with at least three rails (2, 3, 4) which can be displaced relative to one another by means of rolling or rolling bodies (18, 20, 22, 24), a first rail (2) being connected to an extendable furniture part, a second Rail (3) forms a central guide rail, and a third rail (4) is connected to a furniture body and the first, second and third rails (2, 3, 4) are slidably held to one another, a feed device (6) being provided is, by means of which the first rail (2) in a

Part of the insertion movement can be moved into a closed position by means of spring force, characterized in that means (9, 10) are provided for forcibly synchronizing the running movement of the rails (2, 3, 4) which can be moved relative to one another.

2. Drawer guide device according to claim 1, characterized in that the means for synchronizing comprise a stop (9) which is effective before the start of the section of the feeder device (6).

3. Drawer guide device according to claim 1 or 2, characterized in that on the central guide rail (3) a roller (5) is mounted, which rests on the first and third rails (2, 4).

4. Drawer guide device according to claim 3, characterized in that on the central guide rail (3) a stop (9) is fixed, which cooperates with a counter-stop (10) for synchronization.

5. Drawer guide device according to claim 4, characterized in that the counter-stop (10) on a driver (8) of the pull-in device (6) is formed.

6. Drawer guide device according to one of claims 1 to 5, characterized in that the pull-in device (6) on a driver (8) egg ne receptacle (16) into which an activator (7) coupled to the first rail (2) engages.

7. drawer guide device according to one of claims 1 to 6, characterized in that the pull-in device (6) on the rail connected to the furniture body (4) is fixed.

8. Drawer guide device according to one of claims 1 to 7, characterized in that a damping or braking device is effective against the insertion direction over a section of the insertion direction, the damping or braking device on the one hand with the third rail (4) and on the other hand is connected to the first rail (2) or the second rail (3).

9. Drawer guide device according to one of claims 1 to 8, characterized in that the pull-in device (6) has a housing (14) which has an opening (15) for carrying out the stop (9).

10. Cabinet furniture with a furniture body and at least one drawer, characterized in that the drawer on each side has a

Drawer guide device according to one of the preceding claims is held on the furniture body.