Supports: cabinet structure – With movable components – Horizontally movable
Patent
1993-01-08
1994-03-08
Dorner, Kenneth J.
Supports: cabinet structure
With movable components
Horizontally movable
31233418, 31233421, 384 19, A47B 8800
Patent
active
052921921
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a profiled bar of metal plate with an approximately U-shaped cross-section provided as a guide rail for roller drawer guides in articles of furniture which may be screwed with its web surface onto the support wall of the associated cupboard carcass and on whose strip-shaped limb sections projecting from the web surface runs the running roller of the associated profiled running track, which is to be mounted on the withdrawable furniture portion, and which at its front end at the exterior of the carcass carries a substantially flat surfaced fastening flange as an extension of the web surface from which the pivot pin for the fixed running roller running on the running rail also projects.
Roller drawer guides of the type in question have been successful to an increasing extent in recent years in furniture construction for the slidable mounting of drawers and other withdrawable furniture in the associated furniture carcass since they ensure easy running of the furniture portions which are to be withdrawn from the cupboard body and may be loaded with the required weights provided that the guide and running rails are profiled of metal plate of sufficient material thickness. A sufficient load bearing ability of such drawer guides is assumed to be present if on the one hand a drawer which is mounted with the roller drawer guide in question in a cupboard body and is loaded with a predetermined weight has survived a predetermined number of withdrawing/pushing in cycles without damage in tests and if further more the drawer sinks at the front opening side only by a small amount as a consequence of elastic deformation of the profiled rails when loaded with a predetermined maximum weight and in the fully withdrawn state. These conditions are fulfilled by the drawer guides currently offered on the market, but the material thickness of the metal plate used for the profiling of the guide rail currently generally has a lower threshold of about 2 mm. Tests have now shown that when manufacturing the guide rail from metal plates of smaller thickness the required number of withdrawing/pushing in cycles may also be achieved but, however, the guide rail is then--particularly if it is secured at its front end not in the region of the fastening flange but offset somewhat into the interior of the cupboard--too flexible in order to prevent sinking of the fully loaded drawer in the fully withdrawn state by more than the acceptable amount. Fastening of the front end of guide rails in a support which is inwardly displaced with respect to the fastening flange is, however, frequently effected if the support wall of the cupboard carcass is in any event provided with the usual rows of bores for receiving compartment base carriers. However, the fastening flange carrying the running roller of the guide rail then projects beyond the actual fastening point and the aforementioned sinking of the drawer occurs in the withdrawn state.
It is the object of the invention so to develop the guide rail of the roller drawer guides in question that it has the required load bearing ability in the installed state even when it is profiled from metal plate of lesser material thickness.
Starting from a guide rail of the type referred to above this object is solved in accordance with the invention if the fastening flange is bent with respect to the plane of the web surface of the profiled rail about an axis extending substantially transverse to the longitudinal direction of the profiled rail such that when the profiled rail is placed against the associated carcass support wall initially only the end of the profiled rail in the interior of the carcass and the vertical front edge of the fastening flange engage the support wall whilst in the intervening regions there is a small gap between the support wall and the associated flat sides of the web surface and of the fastening flange. When fastening the guide rail to the support wall of the cupboard carcass the guide rail is then drawn into engagement with the support wall by appropriate tigh
REFERENCES:
patent: 4173380 (1979-11-01), Dupree
patent: 4508394 (1985-04-01), Rock
patent: 4615572 (1986-10-01), Nelson
patent: 4639145 (1987-01-01), Lautenschlager
patent: 4799802 (1989-01-01), Lautenschlager
patent: 5039181 (1991-08-01), Lautenschlager
Dorner Kenneth J.
MEPLA-Werke Lautenschlager GmbH & Co. KG
Mulcare Nancy
LandOfFree
Guide rail for roller drawer guides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Guide rail for roller drawer guides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Guide rail for roller drawer guides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-149799