KR20070089728A - Drawer slides - Google Patents

Abstract

The invention relates to a drawer slide (1) comprising at least three slide rails (2, 3, 4) which are mutually displaceable by a rolling body or ball bearings (18, 20, 22, 24), in which case the first The slide rail 2 is connected to the retractable furniture part, the second slide rail 3 forms a central guide slide rail, the third slide rail 4 is connected to the furniture body, and the first, The second and third slide rails 2, 3, 4 are mutually fixed to be displaceable. Also provided is a retracting device 6, by which the first slide rail 2 can be moved to the closed position by elastic force along a partial section of the retracting motion. The slide according to the invention is provided with means for forcibly synchronizing the sliding action of the slide rails 2, 3, 4 arranged on opposite surfaces. In this case the synchronization means may comprise a stop member 9 which acts before the partial section of the retracting device starts.

Description

Drawer slides {DRAWER SLIDE}

The invention relates to a drawer slide according to the preamble of claim 1.

In EP 391 221 a drawer slide is known in which a retracting device acts in one partial section. The retracting device is provided with a spring for pressing the movable furniture part to the closed position. In such a structure, a sliding phenomenon may occur between the slide rails which are mutually displaceable even in the presence of the synchronization ball, or between cages or spacers for setting the position of the rolling body or the ball bearing. Such a sliding phenomenon may prevent the drawer from closing. The spring of the known retracting device is too weak to overcome the sliding friction between the ball in the center guide slide rail and the ball in the additional slide rail. As such, an error situation may occur when the center guide slide rail has not traveled exactly half the distance of the slide rail mounted to the drawer.

EP 1 161 164 describes a draw-out slide device in which a motion damper is fixed on a drawer slide rail and the free end of the damper is connected to a slide on the slide rail. When it enters inside, the closing motion is stopped because the slide collides with the supporting slide rail or the center guide slide rail. However, there is no description of forcibly synchronizing the movement of the slide rails, for example to correct oblique drawers.

In EP 1 393 654 a drawer slide drawer for drawers is known, in which a moving pulley is used, on which two or more slide rails extend oppositely on the moving pulley. In order to prevent the movable pulley from being displaced relative to the slide rail, the movable pulley is temporarily braked and later released by the operation of the slide rail. However, such a solution is relatively complicated from a mechanical point of view.

An object of the present invention is to produce a drawer slide, which ensures a safe closing operation of the drawer and at the same time the slip phenomenon that occurs can be corrected.

The problem is solved by a drawer slide having the features of claim 1.

According to the present invention, by providing means for forcibly synchronizing the sliding motion of the slide rails on which the drawer slides can move relative to each other, the center guide slide rail slides exactly half the distance of the first retractable slide rail. Thus, even when a sliding occurs between the ball supported on the center guide slide rail and the first slide rail, the drawer can be aligned in a desired state by the synchronizing means, and in some cases the tilt of the drawer The condition can also be prevented. Thus, even when the shaking motion occurs in the drawer or when other sliding factors exist, the inclined state or the final position of the drawer is prevented from deviating from the furniture body. Thus, the defined sliding action is predetermined by the drawer slide parts.

According to one preferred embodiment of the present invention, the synchronization means has a stop member which acts before or at the beginning of the partial section of the retracting device. According to this embodiment, the drawing device can be used for the purpose of further adjusting the exact position of the slide rail at the start of the drawing device, in which case the closing action of the drawer can be used for an executable calibration operation. have. If no corrective action is required, the means for synchronizing the slide action of the slide rail can be kept inoperative so that it does not interfere with the closing process.

The stop member may be formed on or fixed to one of the slide rails. On the center guide slide rail it is preferably adjacent the first slide rail and the third slide rail-in other words the slide rails are connected to each other-the ball is supported, in which case the center guide slide rail is the first slide retractable due to the ball. Move at half speed of rail. A stop member is preferably fixed on the center guide slide rail, the stop member interacting with a corresponding stop member for synchronization. In this case, the corresponding stop member may be formed on a follower of the drawing device. By placing the stop member on the center guide slide rail, it is possible to cause the stop member to act in both directions, thereby making it possible to compensate the sliding phenomenon not only in the drawing direction but also in the direction opposite to the drawing direction.

According to a further embodiment of the invention, the retracting device has a receptacle on the follower, in which an activator connected to the first slide rail is coupled.

There is also preferably provided a damping- or braking device which acts over a partial section as opposed to the retraction direction, in which case the damping- or braking device is connected to the second slide rail on the one hand and the first on the other hand. It is connected to the slide rail. Thereby, in order to avoid accidental closing of the drawer, an operation for damping the closing of the drawer in addition to the automatic retracting operation can also be executed. The invention is described in detail below with reference to embodiments associated with the accompanying drawings.

1A-9A are side views illustrating drawer slides according to the invention in different positions,

1B to 9B are plan views, partially cut, of the drawer slide according to FIGS. 1A to 9A;

1C-9C are perspective views of the drawer slide according to FIGS. 1A-9A.

1A-1C, a drawer slide 1 is shown mounted on one side of the drawer in a fixed furniture body. In this case, of course, drawer slides 1 corresponding to both sides of the drawer can be provided, and the right and left sides of the drawer slide 1 are configured in reflective symmetry. In this case, however, only the left side of the drawer slide 1 is shown without a centrally arranged drawer.

The drawer slide 1 comprises a first slide rail 2 connected to a drawable drawer. The first slide rail 2 is connected to a second slide rail 4 fixed to the furniture body via a central guide slide rail 3. The slide rails 2 and 4 and the guide slide rail 3 are supported to be mutually displaceable through the rolling body and the ball bearings 18, 20, 22 and 24. In principle, however, the invention can also be used for drawer slides provided with three or three or more slide rails 2, 3 and 4.

A ball 5 is supported on the center guide slide rail 3, and the ball is rolled on the slide rail 4 as well as on the slide rail 2, whereby the center guide slide rail 3 is connected to the slide rail ( At half speed of 2) it moves relative to the fixed slide rail 4.

In order to draw the drawer into the furniture body over a partial section before the drawer reaches the closed position, a retracting device 6 which interacts with an activator 7 formed in the form of a bar is provided with the slide rail 4. Is provided. For this purpose the inlet device 6 comprises a follower 8 which can engage the activator 7, in which case the activator 7 is fixed on the movable slide rail 2.

By the drawer device 6 having a curved guide device 11 on the housing 14 with one end section bent, the follower 8 moves along the curved guide device 11, and the curved In section 12 it is pivoted and braked. In the braking position, the spring 13 connected to the driven part 8 in a stationary state is expanded, in which case the spring 13 is fixed at the end facing away from the follower 8 on the housing 14. .

In order to be able to synchronize the sliding motion of the slide rail (3) moving relative to the slide rail (4) mounted on the furniture body, the central guide slide rail (3) is formed with a protruding stop member (9) The stop member can penetrate the opening 15 in the housing 14 of the retraction device and in the case of closure can interact with the activator 7 formed as a follower in the form of a bar. The function of the means for synchronizing the slide action is described below with reference to the individual positions:

1A to 1C the drawer slide 1 is shown in the closed position, in which the rolling body or ball bearings 18, 20, 22 and 24, which can be supported inside the cage, slide rails 2 and 4. Adjacent corresponding stop members 17, 19, 21, and 23 on. In this case the drawer is fixed in the closed position by the power of the spring 13.

When the drawer is opened, the first slide rail 2 moves to the left corresponding to FIGS. 2A to 2C, in which case the bar-shaped activator 7 moves the follower 8 against the power of the spring 13. Similarly move it to the left. At this time, the follower 8 is guided inside the curved guide device 11. By moving the center guide slide rail 3 at half speed relative to the slide rail 2 by means of the ball 5, the stop member 9 is moved only at half speed of the follower 8.

3A-3C, the position of the drawer slide 1 is shown in which the activator 7 leaves the receptacle on the follower 8. At this time, the driven part 8 is pivoted in the section 12 inside the curved guide device 11, in which case the driven part 8 is fixed to the parking position by the turning motion, and the spring 13 in the parking position. ) Is kept in an expanded state. As long as there is no sliding between the slide rails 2, 3 and 4, the follower 8 will reach the parking position, in which case the stop member 9 will be stopped by the follower 8 correspondingly. Although contact is always made with the member 10, no displacement is caused because the speed of the follower 8 is faster than the stop member 9. The stop member 9 will rather pass through the opening 15 in the housing 14 of the pulling device 6. When the sliding state of the guide slide rail 3 is corrected, the stop member 9 leaves the opening 15 in the housing 14, while the follower 8 is parked by the corresponding stop member 10. Will be maintained.

As can be seen in FIGS. 4A-4C, the slide rail 2 can be further moved to the open position, in which case the activator 7 is again left out of the receiving portion 16 on the follower 8. Go to. The stop member 9 moves further at half speed relative to the activator 7.

5A-5C the open position of the drawer slide 1 is shown. The rolling body 22 is then adjacent to the final stop member 25 which limits the maximum withdrawal distance.

If the drawer is further moved to the closed position, the positions corresponding to FIGS. 1 to 4 described in the opening process can be cycled again as long as no sliding occurs between the slide rails 2, 3 and 4. In the following, however, some mutually relative displacement of the slide rails 2, 3 and 4 has occurred due to the movement of the drawer or for other reasons, resulting in a sliding phenomenon, in particular a guide slide rail at a calibrated slide distance. It is assumed that the situation is placed too far inside the furniture body.

The drawer moves in the direction of the closed position until it reaches the position shown in Figures 6A-6C. Unlike in the positions shown in FIGS. 3A-3C, the stop member 9 and the activator 7 are mutually displaced with respect to their original arrangement, in which case the stop member 9 is first accommodated by the activator 7. Before reaching the part 16, it will collide with the follower 8 in the region of the corresponding stop member 10. However, due to the dynamic energy at the closing of the drawer, the sliding friction required to move the slide rail 2 relative to the guide slide rail 3 and the slide rail 4 can be overcome without any problem, The ball 5 is over-sliding. In this case, the central guide slide rail 3 is fixedly supported by the stop member 9 for a short time, because the stop member 9 is adjacent to the corresponding stop member 10 of the follower 8, This is because the eastern part 8 stays in the parking position because of the inclined state.

Thereby, the slide rail 2 is moved relative to the guide slide rail 3 and the activator 7 is able to pivot the follower from the parking position again adjacent to the follower 8, FIG. 7A. To the position shown at 7C. In this case, the activator 7 ensures the pivoting operation of the follower 8 so that the follower is out of the parking position.

In a further step, the inlet device 6 is activated, in which case the follower 8 again moves along the curved guide device 11 and the drawer is pushed to the closed position by the spring 13 (FIG. 8A). To 8C). Since the stop member 9 moves relative to the activator 7 and the follower 8 only at half the speed, the two parts are again separated from each other.

9A-9C again shows the closed position of the drawer slide 1, in which the rolling body or ball bearings 18, 20, 22 and 24 have corresponding stop members 17, 19, 21 and 23. Adjacent to the slide rails (2 and 4). The drawer is fixed in the locked position by the spring 13 of the retracting device 6.

In the illustrated embodiment, no damping- or braking device is shown which can be provided in particular in the region of the partial section, in which the drawing device 6 also acts. Corresponding damping devices are known and can be further mounted or connected to the pulling device 6.

Means for forcibly synchronizing the sliding motion can act in two directions, in which case the follower 8 is adjacent to the stop member 9 by means of a corresponding stop member 10 as shown in FIGS. 3A-3C. Synchronization may also take place at locations.

Claims (10)

A drawer slide (1) comprising three or more slide rails (2, 3, 4) that are mutually displaceable by rolling bodies or ball bearings (18, 20, 22, 24), The first slide rail 2 is connected to the retractable furniture part, the second slide rail 3 forms a central guide slide rail, the third slide rail 4 is connected to the furniture body, The first, second and third slide rails 2, 3, 4 are displaceably fixed to each other, In the drawer slide provided with a pulling device 6, and configured to be movable by the pulling device so that the first slide rail 2 is moved to the closed position by elastic force along a partial section of the pulling motion, Characterized in that it comprises synchronization means (9, 10) for forcibly synchronizing the sliding motion of the slide rails (2, 3, 4), which are relatively movable to each other, Drawer slides. The method of claim 1, Said synchronizing means comprises a stop member 9, said stop member acting before the partial section of the retracting device 6 starts, Drawer slides. The method according to claim 1 or 2, A ball 5 is supported on the center guide slide rail 3, the ball being adjacent to the first slide rail 2 and the third slide rail 4, Drawer slides. The method of claim 3, wherein A stop member 9 is fixed to the center guide slide rail 3, the stop member interacting with a corresponding stop member 10 for synchronization purposes, Drawer slides. The method of claim 4, wherein The corresponding stop member 10 is characterized in that it is formed in the driven part 8 of the drawing-in device 6, Drawer slides. The method according to any one of claims 1 to 5, The retracting device (6) is provided with a receiving portion (16) in the follower (8), the inside of the receiving portion is characterized in that the activator (7) connected to the first slide rail (2) is coupled, Drawer slides. The method according to any one of claims 1 to 6, The draw-in device 6 is characterized in that it is fixed to the slide rail 4 connected to the furniture body, Drawer slides. The method according to any one of claims 1 to 7, A damping or braking device acts over a partial section of the drawing device in opposition to the drawing direction, the damping or braking device is connected to the third slide rail 4 on the one hand and the first slide rail 2 on the other hand. ) Or to the second slide rail 3, Drawer slides. The method according to any one of claims 1 to 8, Characterized in that the drawing device 6 has a housing 14, which has an opening 15 through which the stop member 9 can pass. Drawer slides. In a dresser with a furniture body and at least one drawer, The drawer is fixed to the furniture body over the drawer slide according to any one of claims 1 to 9 in all respects. wardrobe.

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