PULL-OUT GUIDE FOR DRAWERS

GUIDE ESCAMOTABLE POUR TIROIRS

English Abstract

A drawer pull-out guide that consists of a guide rail 11 that can be fastened to a piece of furniture 12, a slide rail 14 guided by means of rolling elements and attachable to the drawer 16, and a profiled rail 16 having tracks for the rolling elements at one end area or at both end areas is to be made in a simple to construct manner in such a way that the lateral stability of the drawer pull-out guide is clearly improved without increasing the structural parts. In the drawer pull-out guide 10 of the invention, the area of the profiled rail 13 adjoining the tracks is staggered, at least by area, vis-à-vis the vertical in such a way that this area is situated in direction or almost in direction of the resulting lateral forces acting on the drawer pull-out guide 10. For this reason, the area of the profiled rail adjoining the tracks is diagonal vis-à-vis the vertical, however, it is essentially straight or also curved, nevertheless, this area can also be bent repeatedly in the same or opposite directions or have a zigzag shape. The drawer pull-out guide of the invention is particularly suitable for house furniture.

French Abstract

Cet extrait concerne un dispositif pour tiroir comprenant un rail de guidage (11) qui peut être fixé sur un meuble (12), une glissière (14) fonctionnant à l'aide d'organes de roulement et pouvant être montée sur un tiroir (16), ainsi qu'un rail profilé (16) doté, à l'une des extrémités ou aux deux, de voies destinées aux organes de roulement. Le dispositif doit être construit de telle manière que la stabilité latérale soit améliorée sans avoir à augmenter le nombre des pièces structurelles. Avec cette invention, la zone associée au rail profilé (13), qui est adjacente aux voies, est étagée, au moins par endroits, par rapport à la verticale, de telle manière que cette zone soit située, ou presque, dans la direction des forces latérales qui s'exercent sur le dispositif pour tiroir (10). C'est la raison pour laquelle la zone associée au rail profilé (13) qui est adjacente aux voies est placée diagonalement par rapport à la verticale, tout en étant néanmoins droite ou incurvée. Cette zone peut également être courbée à maintes reprises dans des directions identiques ou opposées ou encore selon une forme en S. Le dispositif pour tiroir convient parfaitement à un meuble.

Claims

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CLAIMS:


1. Drawer pull-out guide with a guide rail designed
for mounting on a furniture body and a slide rail designed
for mounting on a drawer and guided by means of rolling
bodies, and with a profiled rail having tracks for the
rolling bodies and one or both end sections, wherein a
section of the profiled rail which adjoins the tracks is
offset against vertical, so that the section lies in a
direction or approximately in a direction of resulting
transverse forces acting on the drawer pull-out guide,
wherein three tracks of the profiled rail which are assigned
to a slide rail are produced by multiple offsetting while
forming a groove into which an end web of the profiled rail
produced by bending is inserted.

2. Drawer pull-out guide according to claim 1,
wherein the section of the profiled rail which adjoins the
tracks is essentially straight but arranged at an angle to
the vertical.

3. Drawer pull-out guide according to claim 1,
wherein the section of the profiled rail which adjoins the
tracks is essentially arcuate.

Description

CA 02270317 1999-04-28

Description
Pull-Out Guide for Drawers

The invention concerns a pull-out guide for drawers, having a
guide rail that can be fastened to a piece of furniture and a
slide rail that can be attached to the drawer and guided by
means of rolling elements and having profiled rails provided
with tracks for the rolling elements at one end area or at
both end areas. Many versions of suitable pull-out guides for
drawers are known.

If the drawer pull-out guide is made as a single pull-out, the
guide rail is made as one piece with the profiled rail. The
slide rail is then fastened to the drawer. In these
embodiments, the drawer can only be partially pulled out of
the piece of furniture. In a complete pull-out, the drawer
pull-out guide is furnished with two slide rails, one of which
is fastened to the drawer and the other to the guide rail.
However, other versions are also known in which the fixed
slide rail is made as one piece with the guide rail.

In these embodiments, the profiled rail is furnished with
bearing surfaces for the rolling elements at both ends. When
the drawer is pulled out, the profiled rail also travels
along. In the previously known designs, the area adjacent to
the tracks is parallel to the side wall of the piece of
furniture to which the guide rail is fastened, both in a
single pull-out and in a complete pull-out version.
Therefore, as a rule, the adjoining area is perpendicular.


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When a drawer is pulled out, lateral forces also act on the
pull-out guide. In the previously described structures, the
lateral stability of the pull-out guide is not especially
high. This results in disadvantages, especially when the
drawer travels in and out since, in particular, the area of
the profiled rail outside of the track is elastically
deformed.

The object of the invention is to provide a pull-out guide for
drawers of the type described in greater detail above that is
simple to construct, such that the lateral stability of the
drawer pull-out guide is clearly improved without increasing
the structural parts.

The object of the invention is solved thereby that the area of
the profiled rail adjoining the tracks is staggered, at least
by area, vis-a-vis the vertical in such a way that this area
is in direction or almost in the direction of the resultant
forces of the lateral forces acting on the pull-out guide.
In contrast to the previously known constructions, the area
adjoining the tracks now no longer runs parallel to the side
wall of the piece of furniture to which the guide rail is
fastened, but this area is at least partially diagonal
thereto. With respect to a drawer pull-out guide designed
such that it can be completely pulled out, this area lies
between the tracks of both ends. Thus, this is the middle
area. With respect to a drawer pull-out guide designed as a
single pull-out, this area lies between the angular guide rail
and the track. The angle of inclination vis-a-vis the
vertical depends on the type of design. With an appropriate
inclination, it can be assumed that the lateral forces acting
thereon do not produce an elastic deformation of the said


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area.

This said area can be designed in various ways. Thus,
according to a first embodiment, the area adjoining the
track is essentially straight, yet inclined vis-a-vis the

vertical. However, it is also feasible that the area of the
profiled rail adjoining the track is bent once or several
times in the same or in opposite directions. The bend can
thereby be such that the webs aligned to one another extend
in direction of the vertical. The said area could, however,

also be formed in a saw-toothed, curved or like manner.
In one broad aspect, there is provided a drawer pull-out
guide with a guide rail designed for mounting on a furniture
body and a slide rail designed for mounting on a drawer and
guided by means of rolling bodies, and with a profiled rail
having tracks for the rolling bodies and one or both end
sections, wherein the section of the profiled rail which
adjoins the tracks is offset against vertical, so that the
section lies in a direction or approximately in a direction
of resulting transverse forces acting on the drawer pull-out

guide, wherein three tracks of the profiled rail which are
assigned to a slide rail are produced by multiple offsetting
while forming a groove into which an end web of the profiled
rail produced by bending is inserted.

The invention shall be described in greater detail with
reference to the attached drawings, showing:

Figure 1 a drawer pull-out guide according to the invention
in the form of a single pull-out,

Figure 2 a drawer pull-out guide according to the invention
in the form of a complete pull-out.


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The drawer pull-out guide 10 shown in Figures 1 and 2 has a
guide rail 11 which is angular in shape and fastened to a
side wall 12 of a piece of furniture (not otherwise shown).
In the embodiment of Figure 1, the profiled rail 13 forms a
one-piece rail with the guide rail 11.

In the embodiment of Figure 2, this one-piece rail is formed
from the guide rail 11 and a stationary slide rail 14. A
slide rail 15 which is almost the same in cross-section is
fastened to the drawer 16 (shown in outline). Thus, in the
embodiment of Figure 1, slide rail 14 is missing. The
profiled rail 13 is provided with three tracks in the


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embodiment of Figure 1. In the embodiment of Figure 2, both
ends are formed in the same way, so that three tracks are
again produced in each case. Several rolling elements 17 in
the form of balls arranged in succession are allocated to each
track of the profiled rail 13. In particular, Figure 2 shows
that the area of the profiled rail 13 situated between the
tracks on the end extends diagonally to the vertical. This is
also true for the embodiment of Figure 1, however, the angle
of the area formed adjacent to the tracks or lying between the
tracks is made such that it extends in direction of the
resultant forces produced by the lateral forces that act on
the drawer pull-out guide 10. This said area does not have to
extend in a straight line or in a curved manner, but can also
be bent, preferably repeatedly bent.

A profiling, for example, a zigzag-like arrangement would also
be feasible, so that, depending on the formation of this area,
certain parts are staggered vis-a-vis the vertical or are
diagonal thereto. Remaining parts could thereby also extend
in direction of the vertical.

In the embodiments shown, three tracks allocated to a slide
rail 14 and 15 are produced by repeated bending. A groove 18
is formed thereby into which an end web 19 is inserted by
bending.

The invention is not restricted to the embodiments shown. The
area adjoining the tracks or lying between the tracks, which
deviates from the vertical and which can be formed in various
ways, is essential, so that the elasticity caused by the
lateral forces is reduced.

Representative Drawing