Supports: cabinet structure – With movable components – Horizontally movable
Patent
1997-10-24
1999-11-23
Brittain, James R.
Supports: cabinet structure
With movable components
Horizontally movable
312333, 3123341, 31233447, A47B 8800
Patent
active
059887800
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a pull-out guide assembly for a drawer and including a supporting rail to be attached to a furniture wall, at pull-out rail to be attached to the drawer, and an intermediate rail arranged between such two rails on each side of the drawer. Rollers are arranged between the rails and transmit the load of the drawer between the rails. A locking device is mounted on the intermediate rail on at least one side of the drawer by means of which the intermediate rail and the pull-out rail can be coupled during a rear part of their displacement. A closing device preferably is mounted on the support rail and engages the intermediate rail in the rear part of its displacement to move the intermediate rail together with the pull-out rail coupled thereto into a rearmost position when the drawer is inserted.
EP 0 548 706 A1 discloses a pull-out guide for a drawer whereby a pull-out rail and a support rail are arranged on each side of the drawer. Rollers are mounted between the rails and transmit the load of the drawer from the pull-out rail to the support rail. A closing device is mounted on the support rail and engages the pull-out rail in the rear part of its displacement and moves the pull-out rail together with the drawer by means of a spring into its rearmost final position. This prevents a drawer which is not fully closed from protruding from the article of furniture. Further examples of such closing devices are described in EP 0 391 221 B1 and US-PS 52 07 781.
EP 0 664 984 A2 shows a differential pull-out guide for a drawer with a pull-out rail, a support rail and an intermediate rail running differentially between such two rails on each side of the drawer. The differential movement of the pull-out rails and the intermediate rails is controlled by means of a control cable. The support rail is provided with a closing device having a tilting member, which is acted upon by a spring and which engages a peg of the intermediate rail in the rear part of its displacement and moves the intermediate rail to its rearmost final position. By means of the control cable the pull-out rail is moved into the rearmost final position and the drawer is closed correctly. When the closing device engages the intermediate rail the latter is coupled to the pull-out rail. There is no relative motion between these two rails. In the front part of the displacement of the pull-out guide assembly, however, the pull-out rail, the intermediate rail and the support rail run differentially with respect to each other.
SUMMARY OF THE INVENTION
It is the object of the invention to provide an improved pull-out guide assembly of the afore-mentioned type including a pull-out rail, a differentially running intermediate rail and a support rail, but such that an improved transition to the differential movement of the rails is achieved when the closing device is released and such that this differential movement is subsequently controlled. Such object is achieved in that a driving roller is mounted on the intermediate rail and runs on running flanges of the support rail and the pull-out rail and in that a clearance is provided between the driving roller and the support rail at a position or area to render the driving roller inactive.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following embodiments of the invention will be described in detail with reference to the accompanying drawings, wherein:
FIGS. 1 and 2 are cross sectional views of a pull-out guide assembly according to the invention;
FIG. 3 is a side view of the pull-out guide assembly in the region of a locking device in a released position, the locking device being a slide;
FIG. 4 is a side view the same as FIG. 3 but in a position close to locking an intermediate rail with a pull-out rail;
FIG. 5 is the same side view during locking of the pull-out rail with the intermediate rail;
FIG. 6 is the same view, the rails of the pull-out guide assembly being in a fully inserted position;
FIGS. 7a to 7f are side views of a pull-out guide assembly accordin
REFERENCES:
patent: 2726905 (1955-12-01), Sundquist
patent: 2859070 (1958-11-01), Gomersall
patent: 3123419 (1964-03-01), Maxwell
patent: 4749242 (1988-06-01), Rechberg
patent: 5292198 (1994-03-01), Rock et al.
patent: 5344227 (1994-09-01), Rock
Brustle Klaus
Rock Erich
Brittain James R.
Julius Blum Gesellschaft m.b.H.
Schwing Karlena D.
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