DE202006011766U1 - Pull-out guide for guiding furniture parts - Google Patents

Abstract

The invention proposes a pull-out guide (1) for guiding furniture parts, having a basic-structure rail (2) and a pull-out rail (3) as well as a central rail (4) which is mounted in a displaceable manner between the basic-structure and pull-out rails (2, 3). Bearing elements are arranged between the basic-structure rail (2) and the central rail (4) and between the pull-out rail (3) and the central rail (4). Also provided is a control bearing unit (12) which acts between the basic-structure rail (2) and the pull-out rail (3). According to the invention, the control bearing unit (12) comprises an elastic bearing body (14) and a comparatively hard bearing body (15). The pull-out guide (1) is designed such that the hard bearing body (15), in the pushed-in state of the pull-out guide (1), is not exposed to forces from at least one of the basic-structure and pull-out rails.

Description

The The invention relates to a pull-out guide for guide of furniture parts according to the preamble of claim 1.

State of the art

pull-out of furniture parts, in particular with so-called middle rail, which is a full extension from e.g. Allowing drawers are already known in various embodiments become.

From the German patent application DE 33 46 797 A1 For example, a device for sliding roller-type elements of furniture is known. The device consists of three guide parts:
A fixed to be mounted on the furniture, a sliding to be attached to the extendable element guide and an intermediate guide. The intermediate guide includes a roller, in a gap between the fixed to be attached to the furniture and the sliding to be attached to the extendable member guide, which is simultaneously in contact with the fixed guide and the movable guide. The roller, dragged by the friction of the movable guide as it moves relative to the fixed guide, causes the displacement of the intermediate guide. She presses on a rear or front edge of the intermediate guide.

Purpose and advantages of the invention

Of the Invention is based on the object, a pull-out with a center rail between a fixed rail and a mounted on the extendable element rail with respect to to improve the synchronization of the rail parts.

These The object is solved by the features of claim 1.

In the dependent claims are advantageous and expedient developments of the invention.

The The invention relates to a pull-out guide for guiding furniture parts, in particular drawers a carcass rail for mounting on a fixed furniture part, e.g. a drawer body, a pull-out rail for mounting a piece of furniture to be pulled out, e.g. a drawer and a center rail between the Carcass and pull-out rail is slidably mounted, off, to one comparatively wide excerpt, preferably full extension of the drawer rail to allow in relation to the carcass rail. Between the carcass rail and the center rail as well as the pull-out rail and the center rail rolling bearing elements are arranged, in particular stored in bearing cages Balls or rollers or rollers. In addition, a control bearing unit is provided which between the carcass rail and the pull-out rail acts to order to adjust the movement of the middle rail to the extension rail.

Of the The core of the invention lies in the fact that the control-bearing unit has a deformable elastic, soft rolling bearing body and a comparatively hard, in normal operation hardly or non-deforming rolling bearing body, wherein the pull-out designed is that only the hard bearing body in the retracted state of the pull-out guide with respect to forces of at least one rail of carcase and pull-out rail free is.

In order to can with the soft bearing body a Kind of "basic control" for the movement provided to the central rail, due to the fact that that the soft bearing body constantly engaged between the carcass and puller rail.

Preferably is the hard bearing body in terms of body and Excerpt rail released.

Of the hard bearing body can while the extract comparatively large bearing forces take up. The exemption is but a deformation the hard bearing roller due to forces acting between the carcass and the pull-out rail, in particular at e.g. high loads in a drawer, avoided in the retracted state of the pull-out. Such forces be from the rest Bearing elements between the rails added. The hard bearing body retains this e.g. his original Roll shape over a long period of use, with the result that the extraction process in its quality not deteriorated.

When bearing body The control-bearing unit come in particular rollers or rollers Consideration. It can but also spherical bearing body come into use.

Especially the soft bearing roller should have a connection to the center rail, to a desired Synchronization of center rail and pull-out rail in relation to To effect corpus rail. To realize an advantageous Control effect of the soft bearing body it is also suggested that the soft bearing body is more than 0.2 mm larger as a clear width of a channel between carcass and pull-out rail, in which the bearing body rolls.

In A preferred embodiment of the invention is the control-bearing unit stored on the middle rail. In this context, it is moreover advantageous when the soft and the hard bearing body an axis are arranged, preferably at the center rail is attached. Thus, the component cost can be optimized.

Of the Diameter of the hard bearing body is preferably about 0.1 mm larger than the channel between carcass and pull-out rail, in which the bearing body rolls. This is a "tight" largely backlash-free guide reached between the rails.

In one moreover preferred embodiment of the invention is to exempt the hard bearing body a recess provided in the body and / or pull-out rail. The recess should thus be arranged on at least one of the rails be that in the inserted state, the recess over or under the hard bearing body is located so that the bearing body at this point without touch is free.

It is preferred if two recesses are provided such that they overlap in the retracted state of the pull-out guide. conveniently, is the hard bearing body then in the overlap area arranged so that it is non-contact stands for the carcass and extension rail.

in the Furthermore, it is preferred if the bearing axis of both the soft as well as the hard bearing body runs horizontally. In this way, the hard bearing body can effectively extract weight forces from the furniture part take up.

Around an improved synchronization between the center rail and to achieve the carcass or pull-out rail is, moreover proposed that at least one of the body and pull-out rail on a runway of the soft bearing body, in the area in which the hard bearing body is still free, a surface with a comparison increased liability to the remaining runway is available. For example, a toothing, ribbing, transverse groove or other roughened surface formed in this runway area. Conceivable are also different rubberized surfaces. Preferably, such a surface is both on the slide rail as well as on the carcase rail available. This will be an undesirable Offset of the middle rail to the carcass or pull-out rail when pulling out essentially avoided.

drawings

One embodiment The invention is illustrated in the drawings and indicated further advantages and details explained in more detail below. Show it

1 a drawer extension according to the invention in a slightly open position in a side view,

2 a section through the drawer extension according to 1 along the section line JJ in 1 .

3 a section along the section line through the drawer guide according to the section line KK in 2 .

4 an enlarged view of the rectangular area L in 3 and

5 in a perspective view, a section which corresponds approximately to the area L, in which a part of the components is shown transparently, so that the view is made possible on a control roller unit according to the invention, wherein a nearly closed state of the drawer guide is shown.

Description of the embodiment

In the figures is a drawer slide 1 pictured, taken from a carcase rail 2 , a drawer rail 3 as well as a middle rail 4 consists. Such a drawer guide 1 is about mounting bracket 5 that with the carcase rail 2 are connected, mounted on the left and right of a drawer on a furniture body. At the drawer rail 3 the drawer is attached.

In the 1 to 4 is a slightly open state of the drawer slide 1 displayed. To the drawer rail 3 opposite the carcase rail 2 over the middle rail 4 to store slidably, are bearing cages 6 between the drawer rail 3 and the middle rail 4 as well as the carcase rail 2 and the middle rail 4 arranged. The camp cages 6 include rotatably mounted bearing rollers 7 ,

In a known manner, the bearing cages 6 in a U-shaped channel 8th . 9 the carcass or drawer rail 2 . 3 housed (see in particular 2 ). On opposite surfaces of the respective U-shaped channel 8th . 9 Roll the bearing rollers 7 from where between the bearing rollers 7 one angular section each 10 . 11 the middle rail 4 attacks.

This is already a comparatively play-free guidance of the rails 2 . 3 . 4 reach each other. A synchronization of these rails too each other is only inadequately possible with only the bearing cages regularly.

Therefore, a tax storage unit 12 intended.

The tax warehouse unit 12 includes at one of the middle rail 4 arranged axis 13 a soft bearing roll 14 , which is exemplary in relation to the middle rail inside and a comparatively harder outer bearing roller 15 , The soft bearing roller is preferably formed of a deformable resilient soft material, but not so soft that in the slightly compressed state, no forces between outer surfaces 2a . 3a of the respective U-shaped channel 8th . 9 can be transmitted. The soft bearing roller 14 has an excess of preferably greater than 0.2 mm. With the soft role 14 can be a "basic control" between the rails 2 . 3 . 4 provide.

The example here outside lying hard bearing roller 15 also has an oversize, but much smaller than the excess of the soft roll, and is for example 0.1 mm larger than a clear width a of the channel between the carcass rail 2 and the drawer rail 3 , As a result, the rails are also slightly braced against each other, so that a "full" leadership is given. With the hard bearing roller 15 can bearing forces between the rails 2 . 3 . 4 be transmitted.

Preferably, as in the embodiment, the axis 13 the tax warehouse unit 12 aligned horizontally. When undressing rolls both the soft and the hard role 15 on the respective outside 2a . 3a the carcass rail 2 or drawer rail 3 from. This allows a synchronization between the rails 2 . 3 . 4 to reach.

Both on the carcase rail 2 as well as on the drawer rail 3 is a recess in the present example 16 . 17 as well as a toothed area 18 . 19 intended. The toothed area lies only on the respective track of the soft role of the carcass rail 2 or the drawer rail 3 whereas the recess is only on the respective track of the hard roller 15 on the carcase rail 2 or drawer rail 3 is trained. In addition, both the respective toothed area 18 . 19 as well as the respective recess 16 . 17 so on the carcase rail 2 or drawer rail 3 attached in the collapsed state of the drawer slide 1 viewed in the vertical direction, overlap. This will achieve that hard role 15 when pushing the drawer slide 1 , ie when inserting a drawer, just before the end position is reached, through the recesses 16 . 17 , which are slightly wider than the hard bearing roller 15 even, into "emptiness" and is thus released. In this area, however, then falls the synchronization effect of the hard bearing roller 15 path. In particular, in this area, however, a secure synchronization of the rails 2 . 3 . 4 to get each other, is the running range of the soft bearing roller 14 toothed, leaving the soft bearing roller 14 can not slip.

In the present embodiment starts at the point where on the path for the hard bearing roller 15 the respective recess 16 . 17 occurs on the path of the soft bearing roller 14 the respective toothed area 18 . 19 (See in particular the perspective view according to 5 ).

In the 1 . 2 . 3 and 4 have the respective bearing rollers 14 . 15 the toothed area 18 . 19 or the recesses 16 . 17 not reached yet.

In 5 On the other hand, the bearing rollers are located 14 . 15 already in the respective areas, although not yet the final fully inserted position of the drawer slide 1 is reached. It can be seen, however, that even with "free" hard bearing role 15 the soft bearing roll by rolling on the respective toothed area 18 . 19 on the outside 3a respectively. 2a the carcass rail 2 a secure synchronization until the drawer slide is fully inserted 1 can provide.

In addition, by the soft bearing roller 14 ensured that the hard bearing roll 15 at the transition from the respective recess 16 . 17 under safe guidance of the rails to each other on the respective path to the carcass rail 2 or drawer rail 3 is lifted. It is preferred that the recesses 16 . 17 are dimensioned in length so that the hard roll 15 not at the same time both on the track on the carcase rail 2 as well as on the drawer rail 3 is lifted. This is in 5 clarified. It can be seen that the hard bearing roller 15 straight on the path of the carcass rail 2 is lifted, but still in the recess 17 the drawer rail 3 is positioned. By such offset lifting the hard bearing roller 15 on the respective path is as uniform as possible extension of the drawer slide 1 reached.

By exempting the hard role 15 the occurrence of a "stand plate" is avoided on the hard role in the inserted state of the pull-out.

1

drawer guide

2

cabinet member

3

drawer rail

4

middle rail

5

mounting Brackets

6

bearing cage

7

bedroll

8th

U-shaped channel

9

U-shaped channel

10

angle section

11

angle section

12

Tax-bearing unit

13

axis

14

soft bearing roller

15

hardness bearing roller

16

recess

17

recess

18

toothed Area

19

toothed Area

Claims (7)

Pull-out guide ( 1 ) for guiding furniture parts with a carcass rail ( 2 ) for mounting on a fixed furniture part, a pull-out rail ( 3 ) for mounting on a piece of furniture to be pulled out and a middle rail ( 4 ) between the carcass and the extension rail ( 2 . 3 ) is arranged displaceably mounted, wherein rolling bearing elements between the carcass rail ( 2 ) and the middle rail ( 4 ) and the pull-out rail ( 3 ) and the middle rail ( 4 ), and wherein a control storage unit ( 12 ) provided between the carcass rail ( 2 ) and the pull-out rail ( 3 ), characterized in that the control storage unit ( 12 ) a deformable, elastically soft rolling bearing body ( 14 ) and a comparatively hard, in normal operation hardly or not deforming rolling bearing body ( 15 ), wherein the pull-out guide ( 1 ) is configured such that the hard bearing body ( 15 ) in the retracted state with regard to forces of at least one rail of carcass and pull-out rail ( 2 . 3 ) is released. Pull-out guide according to claim 1, characterized in that the soft bearing body ( 14 ) is more than approximately 0.2 mm larger than a channel between the body and pull-out rail ( 2 . 3 ), in which the bearing body ( 14 ) rolls off. Pull-out guide according to claim 1 or 2, characterized in that the control bearing unit ( 12 ) on the middle rail ( 4 ) is stored. Pull-out guide according to one of the preceding claims, characterized in that a soft and hard bearing body ( 14 . 15 ) on one axis ( 13 ) is arranged. Pull-out guide according to one of the preceding claims, characterized in that for the release of the hard bearing body ( 15 ) a recess ( 16 . 17 ) in the carcass and / or pull-out rail ( 2 . 3 ) is provided. Pull-out guide according to one of the preceding claims, characterized in that for the release of the hard bearing body ( 15 ) Recesses ( 16 . 17 ) in the carcass and the pull-out rail ( 2 . 3 ) are provided such that they overlap in the retracted state of the pull-out. Pull-out guide according to one of the preceding claims, characterized in that on at least one of the carcass and pull-out rail ( 2 . 3 ) on a runway of the soft bearing body ( 14 ) in the area in which the hard bearing body ( 15 ) is still free, a surface is formed with increased compared to the remaining runway liability.