EP1066773A1 - Slide - Google Patents

Abstract

The guide (10) has at least two guide rails (14,18,26), which slide in one other in the longitudinal direction. A bearing unit has several cylindrical rollers held between the guide rails, with one roller (52,57) horizontal and the other two rollers (53-56) inclined to form a triangle. Each guide rail engages the triangle formed by the rollers by a support bar between the rollers. The guide (10) has at least two guide rails (14,18,26), which slide in one other in the longitudinal direction. One guide rail is fixed to a furniture part (12) and a further guide rail is fixed to a drawer (20). A bearing unit has several cylindrical rollers held between the guide rails with their axes perpendicular to the withdrawal direction. At least one roller (52,57) is arranged horizontally between the guide rails and at least two rollers (53-56) are inclined to the horizontal between the guide rails, so that the roller axes form a triangle in the withdrawal direction. Each guide rail engages the triangle formed by the rollers by a support bar (27) between the horizontal and the inclined rollers.

Description

The invention relates to a pull-out guide according to the preamble of the claim 1. Such pull-out guides or telescopic pull-outs are used for pull-out furniture parts, e.g. Furniture drawers or worktops, used, with a guide rail the pull-out guide on a fixed part, such as the furniture body is attached and another guide rail on the pull-out furniture part itself is attached. Depending on the size and weight of the furniture part to be pulled out the pull-out guide is primarily due to the vertical forces caused by gravity record, but also ensure a safe lateral guidance.

Pull-out guides are known, e.g. by DE 44 43 063 C1. At that one Pull-out guide shown are a first and third guide profile almost U-shaped executed and point horizontally into the same with the open sides of the "U" Direction. A second guide rail is also U-shaped and points with its U-legs in the opposite direction, reaches between them U-legs of the first and third guide rails, each on both sides U-legs of the second guide rail balls are arranged, by means of which the rails are slidably guided.

The use of balls allows only a limited load, because of the Geometry of the balls there are only point contacts with the raceways. On Flat contact of the balls differs due to the different ball radius in relation to the axis of rotation. Furthermore, because of the low availability standing space for such pull-out guides to achieve the balls a favorable wing loading cannot be chosen arbitrarily large. This will especially in the prior art given by DE 3127701 A1. Here a triangular outer profile is proposed, the inner corners have raceways adapted to the diameter of balls. The inner corners, Forming wall areas of the equilateral triangle close an angle of 60 °, which means that the inner profile is also formed at an acute angle must be what inevitably only very narrow raceways on the inner profile for the bullets.

To remedy this defect, the generic DE 36 23 743 C2 proposed a pull-out guide with two rails, the one with cylindrical Rolling bodies is equipped, whose central axes are extended beyond their end faces form a triangle. Contrary to the use of balls, by the scope of which can only serve small areas of power transmission, the entire length of the cylindrical roller body for power transmission to the opposite Walls available. With the proposed construction has the outer, a hollow profile rail, a downward Slot that forms the passage for the second rail. The interior of the Hollow profile tapers in the direction of the slot so that two acute angles for vertical runways for the rolling elements are formed.

A disadvantage of the pull-out guide shown in DE 36 23 743 C2 is that the two runways running at an angle to each other under the influence of loads in elastic Spread the area like a wedge. The extension guide is in the extended state in the front area of the extended furniture part due to gravity claimed below while tending to leverage in the rear area is claimed upwards. In this area there is therefore a spread of two legs, which are on the one hand over the cage of the rolling elements on the horizontal Impacting rolling elements and on the other hand the outer rail is deformed in such a way that the tread is curved relative to the horizontal rolling element. These two effects of spreading inevitably lead to worse ones Running properties and greater wear of the horizontal rolling element.

Based on the above knowledge, the invention is therefore based on the object to design and develop the pull-out guide of the type described above, that deformation of the guide rails under load is avoided and the good running properties of the guide rails even with greater loads to be kept.

This task is performed with a pull-out guide with the features of the claim 1 solved.

If in a bearing unit several rolling elements forming a triangle between two guide rails are arranged, and one guide rail each over one Support web between the substantially horizontally arranged rolling element and an inclined roller into the through the roller axes engages formed triangle, the slot runs in the outer guide rail Do not pass the inner guide rail between the two at an incline Rolling bodies but rather laterally horizontally in a lower load Area. Thus, when these rolling elements are loaded, they become dimensionally stable Guidance of all rolling elements guaranteed. The essentially horizontal arrangement of the rolling element comprises smaller angles of inclination of up to 15 ° can be useful for special applications. The angle of inclination of the triangle formed by the rolling elements can be designed, e.g. with heavy vertical loads and a relatively large amount of space, small angles of inclination are preferable.

In a preferred embodiment of the invention, the guide rail has with the support web on triangular treads, on each of which Rolling element rests. This enables simple and inexpensive production the corresponding guide rail, for example by folding a metal part.

A guide rail preferably engages around the rolling elements and the guide rail with the supporting web and accordingly has a laterally arranged Slot for the passage of the supporting bridge. The integral training of the outside The guide rail brings with it a particularly high degree of dimensional stability.

A compact size of the pull-out guide is obtained if the comprehensive Guide rail is five-sided in cross section, with three edges as Treads serve and two edges connect two treads to each other. The guide rail could also be triangular, it would but then need more space in cross section.

A greater stability of the pull-out guide is obtained if a storage unit has a plurality of rolling elements arranged one behind the other in the direction of displacement, so that the load can be distributed to several rolling elements at the same time. Preferably are two bearing units between two guide rails provided so that a front storage unit in the pull-out direction rather vertically is claimed below and the rear bearing unit by the leverage is strained vertically upwards in the extended state.

In one embodiment of a pull-out guide in which part of the pull-out Furniture part remains in the furniture body, are only two guide rails intended. This means that the maximum travel of the pull-out guide is relatively strong limited, but the construction costs are particularly low.

Alternatively, three guide rails can be provided for the pull-out guide, wherein a first guide rail is connected to the fixed part, a third guide rail is connected to the pull-out furniture part and one second guide rail to both the first guide rail and the third Guide rail is slidably mounted. This embodiment enables one Pull out the furniture part beyond the furniture body. It is also possible, use four or more guide rails so that the maximum running distance the excerpt is enlarged.

A compact design of the embodiment with three guide rails is obtained if the second guide rail is C-shaped and both of them free legs are each provided with an angle on which the treads are formed for the inclined rolling elements. Preferably form the two free legs of the second guide rail each have a tread for one horizontally arranged rolling elements and are connected by a connecting bar interconnected so that only a minimal number of individual components for the Extending guide is necessary.

If a roller is mounted on the connecting web, the circumference is in contact with the first guide rail and the third guide rail, becomes a smooth movement of the second and third guide rail in a simple manner preserved relative to the first guide rail.

In the embodiments with three or more guide rails, the shape of the guide rails depending on the space available and the expected load can be varied, the second guide rail or the middle guide rails depending on the available space and load, preferably Z-shaped, X-shaped, E-shaped or S-shaped.

Fig. 1

eine Querschnittsansicht durch ein erstes Ausführungsbeispiel einer erfindungsgemäßen Ausziehführung;

Fig. 2

eine Abwandlung des ersten Ausführungsbeispieles, bei dem nur die zweite Führungsschiene gezeigt ist;

Fig. 3

eine Abwandlung des ersten Ausführungsbeispieles, bei dem nur die zweite Führungsschiene gezeigt ist;

Fig. 4

eine Ansicht einer Abwinklung eines Schenkel einer Führungsschiene;

Fig. 5

eine Ansicht einer Abwinklung eines Schenkels einer Führungsschiene als massiv ausgebildetes Profil;

Fig. 6

ein zweites Ausführungsbeispiel mit S-förmiger zweiter Führungsschiene;

Fig. 7

ein drittes Ausführungsbeispiel mit E-förmiger zweiter Führungsschiene;

Fig. 8

eine Ansicht eines viertens Ausführungsbeispieles;

Fig. 9

eine Ansicht eines fünften Ausführungsbeispieles;

Fig. 10

eine Ansicht eines sechsten Ausführungsbeispieles;

Fig. 11

eine Ansicht eines siebten Ausführungsbeispieles;

Fig. 12

ein achtes Ausführungsbeispiel einer erfindungsgemäßen Ausziehführung, bei der nur zwei Führungsschienen vorgesehen sind;

Fig. 13

eine Abwandlung des in Fig. 12 gezeigten Ausführungsbeispieles;

Fig. 14

eine Abwandlung des in Fig. 12 gezeigten Ausführungsbeispieles, und

Fig. 15

eine Abwandlung des in Fig. 12 gezeigten Ausführungsbeispieles.

The invention is explained in more detail below using several exemplary embodiments with reference to the accompanying drawings. Show it:

Fig. 1

a cross-sectional view through a first embodiment of a pull-out guide according to the invention;

Fig. 2

a modification of the first embodiment, in which only the second guide rail is shown;

Fig. 3

a modification of the first embodiment, in which only the second guide rail is shown;

Fig. 4

a view of an angle of a leg of a guide rail;

Fig. 5

a view of an angle of a leg of a guide rail as a solid profile;

Fig. 6

a second embodiment with an S-shaped second guide rail;

Fig. 7

a third embodiment with an E-shaped second guide rail;

Fig. 8

a view of a fourth embodiment;

Fig. 9

a view of a fifth embodiment;

Fig. 10

a view of a sixth embodiment;

Fig. 11

a view of a seventh embodiment;

Fig. 12

an eighth embodiment of a pull-out guide according to the invention, in which only two guide rails are provided;

Fig. 13

a modification of the embodiment shown in Fig. 12;

Fig. 14

a modification of the embodiment shown in Fig. 12, and

Fig. 15

a modification of the embodiment shown in Fig. 12.

In Fig. 1, a first embodiment of a pull-out guide 10 is shown a first guide rail 14 connected to the fixed furniture part 12 has, in this embodiment, the attachment with the furniture part 12 takes place via a mounting bracket 16. A third guide rail 18 is included a drawer 20 connected. The type of fortifications is known per se and can e.g. be designed as a clamp, adhesive screw or rivet connection. The third guide rail 18 can be reinforced by the fastening means be so that the rigidity of the guide rail 18 is increased.

The guide rail 14 is designed as a hollow profile and has one to the furniture part 12 have horizontal / lateral slot 22. Through this slot 22 the Guide rails 14 engage the parallel leg 24 of a second C-shaped A guide rail 26, wherein the inner surface of the C-leg a first Tread 28 forms and edges produced by folding / bending a second Form tread 32 and third tread 34. The individual treads 28, 30 and 32 thus form a triangular guide profile.

Cylindrical rolling elements 55, 56, 57 roll on the running surfaces 28, 30 and 32, which are made of metal or plastic. Opposite the treads 28, 30 and 32 corresponding treads are formed on the first guide rail 14.

Similarly, the second guide rail 26 forms treads in the upper region 33, 34, 35, on which rolling elements 52, 53, 54 are arranged, on the opposite side on corresponding treads 40, 42 and 44 of the third Guide rail 18 abut. The cylindrical rolling elements 52, 53, 54, 55, 56, 57 are spaced apart in cages 66. But it is also possible that Form guide rails 14, 18 and 26 so that they the rolling elements 52, 53, 54, Hold 55, 56, 57 in position without a cage.

This arrangement allows both the first guide rail 14 to be relatively the second guide rail 26 and the second guide rail 26 relative to move the third guide rail 18. One can use the second guide rail 26 connected to a connecting web 25 by means of a bearing pin 65 Roller 67 on running surfaces 60, 62 of the first and third guide rails 14, 18 unroll. This roller 67 can both increase the load on the entire pull-out guide 10 serve as well as the support of the synchronous Sequence of the three guide profiles 14, 18, 26 in the sense that the second guide rail 26 covers half of the pull-out movement of the third rail 18.

2 to 10 are modifications of the embodiment shown in FIG. 1 shown, with the modifications, the guide rails 14, 18 and 26 are only shown schematically, since the other components are those shown in FIG. 1 Components can correspond.

1, the multiple folds / bends of the second guide rail 26 directed away from each other, they have the guide rail according to FIG. 2 26 'in one direction. As a result, the shape of the guide rail 14th can be adapted to the shape of the guide rail 26 '. Without the scope of the invention could leave the bends / bends forming the treads 3 also between the legs of the second guide rail 26 '' towards each other so that the first and third guide rails would have to adapt to this profile with the rolling elements in between.

Fig. 4 shows a further modification of a leg of a guide rail, wherein the tread 32 'is first formed by a first turning / folding and only then the treads 30 'and 32'. The function of the end shown otherwise corresponds to the lower leg of the second guide rail 26 according to Fig. 1.

As shown in Fig. 5, it is within the scope of the invention to replace the tread by an angled hollow profile made of metal by one with the leg Guide rail connected to create full profile 38 ''. For example, also a extruded one-piece profile can be provided.

It is also within the scope of the invention, instead of a C-profile as a second guide rail to use an approximately S-shaped profile as the second guide rail 126, as shown in FIG. 6. Instead of the drawer is in this embodiment a worktop 20 'is connected to the third guide rail 18'. The second guide rail 126 'encompasses the third guide rail 18' and the first guide rail 14 ', the cylindrical between the guide rails Rolling elements are held.

In FIG. 7, the first guide rail 218 and the third guide rail point 214 formed inner triangles both down and to the right with theirs Support bars led out of the second guide rail 226, so that the second guide rail 226 receives an E-shape.

8, the two inner triangles of the first and third guide rails 218 ', 214 'facing each other and the second guide rail 226' is made of two Individual profiles are formed, which are permanently soldered, welded and glued together or connected in some other way.

In the embodiment shown in Fig. 9 is the third guide rail 218 '' to the other side out of the second guide rail 226 '' as in the previous embodiment. 10 shows only that second guide rail 226 '' 'in one-piece form, as shown in FIG. 9 Extending guide can be used.

11, the inner triangles of the first guide rail 314 and the third guide rail 318 laterally offset from one another arranged so that the rolling elements arranged between the two inner triangles on opposite sides of the same section of the second guide rail 326 concerns.

The embodiment of a pull-out guide 80 shown in FIG. 12 is only included equipped with two guide rails. A first guide rail 84 is over one Mounting flange 78 attached to a furniture wall 82. A second guide rail 88 is via a fastener, not shown, with a drawer 86 connected. Between the first guide rail 84 and the second guide rail 88 are three rolling elements 90, 91 and 92 arranged on corresponding ones Unroll the running surfaces on the guide rails. The rolling elements 90, 91 and 92 are connected to one another via a cage 96. The first guide rail 84 and the second guide rail 88 are slidably mounted, the maximum Extending distance in comparison to embodiments with more guide rails is reduced.

The embodiment shown in Fig. 13 represents a modification of the previous one Embodiment in which the first guide rail 84 'with has a downward-facing triangular profile. The second guide rail 88 'is accordingly horizontally flat at the top, what for the attachment of the drawer 86 can be advantageous.

14, the first guide rail 84 ″ is over a separately formed mounting flange 78 ″ connected to the furniture wall 82. In contrast to the previous exemplary embodiments, the first embraces here Guide rail 84 "the second guide rail 88".

15, the mounting flange 78 '' 'is additionally with an inclined guide surface to align the first guide rail 84 '' '. This makes it easier mounting the first and second guide rails 84 '' 'and 88' '' the furniture wall 82.

The exemplary embodiments shown are each only in the cross-sectional view represented by a storage unit. The full extension guide includes in Pull-out direction at least two storage units with several arranged one behind the other Rolling elements, the pull-out furniture part at least on both Pages is equipped with a pull-out guide according to the invention.

Reference list

10 pull-out guide

12 furniture part

14, 114, 214, 314 first guide rail

16 mounting brackets

18, 118, 218, 318 third guide rail

20 drawers

22 slot

24 legs

25 connecting bridge

26, 126, 226, 326 second guide rail

27 supporting bridge

28 tread

30 second tread

32 third tread

33, 34, 35 treads

38 folding

40, 42, 44 treads

41, 43 connecting bars

52, 53, 54, 55, 56, 57 rolling elements

60.62 treads

65 journals

66 cage

67 roller

78 mounting flange

80 pull-out guide

82 furniture wall

84 first guide rail

85 supporting bridge

86 drawer

88 second guide rail

90, 91, 92 rolling elements

96 cage

Claims (13)

Pull-out guide for drawers, worktops and other pull-out furniture parts (16) with at least two guide rails (14, 18, 26, 84, 88) which are held in the longitudinal direction so as to be displaceable relative to one another by bearing units, one guide rail on a fixed part (12, 82) , such as a furniture body, can be fastened and a further guide rail can be fastened to the pull-out furniture part (20, 86), a bearing unit a plurality of cylindrical rolling elements (52, 53, 54; 55, 56, 57; 90, 91, 92) held between two guide rails ), the rolling element axes of which are arranged perpendicular to the direction of displacement, at least one rolling element (52, 57, 90) of a bearing unit being installed essentially horizontally between two guide rails and two rolling elements (53, 54; 55, 56; 91, 92 ) are arranged with the rolling element axis inclined to the horizontal between the two guide rails, such that the rolling element axes of the Wä lz body of a storage unit seen in the direction of displacement form a triangle,
characterized in that
one guide rail each via a support web (27, 85) between the substantially horizontally arranged rolling element (52, 57, 90) and an inclined rolling element (53, 54, 55, 56, 91, 92) into the triangle formed by the rolling element axes intervenes. Pull-out guide according to claim 1, characterized in that the guide rail with the supporting web (27, 85) has triangularly arranged running surfaces (28, 30, 32; 33, 34, 35), against which a rolling element rests. Pull-out guide according to claim 1 or 2, characterized in that a guide rail (14, 18, 88) engages around the rolling elements and the guide rail (26, 84) with the supporting web (27, 85) and has a slot for the carrying-through of the supporting web. Pull-out guide according to claim 3, characterized in that the encompassing guide rail (14, 18, 88) has a five-sided cross section, three edges serving as running surfaces (42, 44, 46) and two edges (41, 43) each having two running surfaces connect. Pull-out guide according to one of claims 1 to 4, characterized in that a bearing unit has a plurality of rolling elements arranged one behind the other in the direction of displacement. Pull-out guide according to one of claims 1 to 5, characterized in that two bearing units are provided between two guide rails. Pull-out guide according to one of claims 1 to 6, characterized in that two guide rails (84, 88) are provided, one guide rail (88) encompassing the other guide rail (84) and the rolling elements (90, 91, 92). Pull-out guide according to one of Claims 1 to 6, characterized in that three guide rails (14, 18, 26) are provided, a first guide rail (14) being connected to the fixed part (12) and a third guide rail (18) to the Pull-out furniture part (20) is connected and a second guide rail (26) is slidably mounted both to the first guide rail (14) and to the third guide rail (18). Pull-out guide according to claim 8, characterized in that the second guide rail (26) is C-shaped and is provided on both of its free legs with a bend (38) on which the running surfaces (30, 32; 34, 35) for the inclined rolling elements (53, 54; 55, 56) are formed. Pull-out guide according to claim 9, characterized in that the two free legs (24) of the second guide rail (26) each form a running surface (28) for a horizontally arranged rolling element (52, 57) and are connected to one another via a connecting web (25). Pull-out guide according to Claim 10, characterized in that a roller (56) is mounted on the connecting web (25), the roller being in contact with the first guide rail (14) and the third guide rail (18) on its circumference. Pull-out guide according to claim 8, characterized in that the second guide rail (226) is Z-shaped. Pull-out guide according to claim 8, characterized in that the second guide rail (126) is S-shaped.

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