Drawer runner for drawers preferably made of plastic

Details Drawer runner for drawers preferably made of plastic Drawer runner for drawers preferably made of plastic

1989-04-05

1991-06-04

Brittain, James R.

Supports: cabinet structure

With external guides or trackways

403335, 403375, 384 18, 384 22, A47B 8814

Patent

active

050208691

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to a drawer runner for drawers which are preferably made of plastic and have pockets in their longitudinal sides for respective drawer runners. The drawer runner is composed of an adapter as well as a withdrawal guide which is releasably connected to the adapter and the adapter is mountable in either a left or a right pocket. A slide rail of the withdrawal guide is secured to the adapter, by means of a locking device which can catch in a locking groove of the slide rail, against longitudinal shifting tending to cause separation.
It is an object of the present invention to design a drawer runner of the above type, which includes an adapter capable of being selectively mounted on the left or the right, in a simple manner and such that an adequate construction for the rightleft interchangeability of the adapter is achieved as regards the engagement between the adapter and the slide rail.
According to the invention, this object is achieved in that the locking device includes at least one detent which is symmetrical about the median plane dividing the adapter longitudinally and in that, for two detents (16), these are symmetrically arranged about the median plane (15) of the adapter.
This relatively simple structural expedient ensures that the slide rail of such a withdrawal guide will always be secured against longitudinal shifting in the same position regardless of whether the complete drawer runner is employed on the left or the right of a drawer.
It is possible, within the scope of the present invention, to arrange the detents on a common tongue of the adapter which is elastically displaceable sidewise relative to the slide rail. However, it is also conceivable to arrange each detent on a separate tongue of the adapter which is elastically displaceable sidewise relative to the slide rail.
The former structural configuration is to be preferred to the extent that it is particularly simple to achieve during manufacture of the adapter.
If, for structural reasons, which can be imposed by fixing of the adapter to a drawer, central placement of the detents on a common tongue is not possible, the second structural configuration can be employed. The underlying concept of the invention, namely, that locking of the slide rail relative to the adapter can always occur at the same location whether the installation is on the left or the right, is achievable with the second structural configuration also.
Other features of the invention constitute the subject matter of additional subclaims.
Exemplary embodiments of the invention, which are described in more detail below, are illustrated in the accompanying drawings.
There is shown:
FIG. 1 a vertical section through the left side wall of a drawer of a piece of furniture with a drawer runner consisting of an adapter and a withdrawal guide,
FIG. 2 a view of the adapter of the drawer runner in the direction of the arrow II of FIG. 1,
FIG. 3 a view similar to FIG. 2 of an adapter in accordance with another exemplary embodiment of the invention,
FIG. 4 a section along the line IV--IV of FIG. 2,
FIG. 5 a view in the direction of the arrow V of FIG. 4,
FIG. 6 a section along the line VI--VI of FIG. 4,
FIG. 7 a view of the slide rail of the drawer runner according to FIG. 1 in the viewing direction of the arrow II of FIG. 1,
FIG. 8 a view in the direction of the arrow VIII of FIG. 7, and
FIG. 9 is a view similar to that of FIG. 7 but showing a modified guide rail.
The reference numeral 10 in FIG. 1 identifies a plastic drawer which, in the illustrated left-hand longitudinal side as well as the nonillustrated right-hand longitudinal side, is provided with a pocket 11 for an elongated supporting element or adapter 12.
This adapter 12 is designed in such a manner that it can be mounted in either the left-hand or the right-hand pocket 11 of the drawer 10.
This adapter 12, together with a withdrawal guide 13 whose elongated guide element or slide rail 14 is releasably connected to the adapter 12, constitutes a drawer runner.
A locking device which is still t

REFERENCES:
patent: 3156282 (1964-11-01), Bedford, Jr.
patent: 4173380 (1979-11-01), Dupree
patent: 4653821 (1987-03-01), Faust
patent: 4717195 (1988-01-01), Okuyama et al.
patent: 4792195 (1988-12-01), Adriaansen
patent: 4810045 (1989-03-01), Lautenschlager

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