Locking device for cabinet or cupboard doors

Details Locking device for cabinet or cupboard doors Locking device for cabinet or cupboard doors

1995-10-11

1998-03-03

Dino, Suzanne

Locks

Special application

For control and machine elements

70451, 70462, 70448, 70116, 292 39, 2923363, B60R 2502

Patent

active

057222690

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
This invention relates to a locking device for cabinet or cupboard doors and, more particularly, to the doors of modular cupboard systems which are intended to house electronic equipment or units in the work places of electronic engineers or technicians.
In order to be able to manufacture cupboards or cabinets with a 19 inch construction and also in metric form, and in order to have a large, easily accessible and usable interior, it is recommended to use a very narrow counterstop, e.g. a narrow hollow frame or section, as a frame member. Side and rear walls, as well as doors, are fixed to the frame member.
It is known to secure removable side and/or rear walls from the exterior or interior and to provide a cupboard door with a locking device, e.g. in the form of a door lock, in order to prevent unauthorized access to the equipment housed therein. In addition, in most cases it is also necessary to provide, in the door area, a seal against the entry of dust and water. A HF shielding, which also presupposes a reliable door tumbler, is also needed.
For locking plates to be fitted as a counterstop at the cupboard side and having bolt receptacles for horizontally adjustable bolts, standard locking devices require correspondingly wide frame members. Such frame members can only be installed with difficulty in cupboard constructions with narrower frame sections.
The object of the invention is to provide an inexpensive, operationally reliable locking device having a design which still permits installation in narrow cupboard and cabinet frame profiles and independently of the door fixing side.
The invention is based on the idea of subdividing a locking device into two areas. A tumbler and a bolt mechanism are constructed and arranged so that a locking movement, initiated by a handle, leads to a deflection of approximately 90.degree. in the direction of a counterstop. A closing or opening position of at least one locking element in a cupboard or cabinet-side receptacle is achieved.
According to the invention, a locking device with a handle located in the vicinity of a door plate and a bolt mechanism operable by a tumbler are constructed in a bipartite manner. The door plate located on the outer face of a door leaf is also given a bipartite construction.
The bipartite door plate has a first plate area with a base plate. A rocking lever, a clamp handle, a key or the like can be arranged on the base plate as a handle. As a second door plate area, an attached plate which, in the direction towards the door edge, engages the longitudinal side of the base plate can be arranged. Inside of the attached plate as the second door plate area, and on the outer face of the door leaf, is provided, in vertically adjustable manner, a sliding plate as the tumbler. The sliding plate is operable by the handle and is in operative connection with a bolt mechanism. The bolt mechanism has a locking rod which is preferably parallel and perpendicular to the sliding plate. The bolt mechanism also has at least one locking element and an appropriate rod guide for the locking rod, as well as a dog as a connection between the sliding plate and the locking rod. As a result of a closing movement of the handle, adjustment in a vertical construction, by a toothed wheel acting as the nut of a lock or a hinge-pinion and meshing teeth of the thrust plate, is transferred to the dog of the locking rod in the form of a vertical movement. When the door is closed, the at least one locking element comes into positive and/or non-positive engagement with the at least one cabinet or cupboard-side receptacle.
The bipartite construction of the door plate is, in particular, made possible by a space-saving, almost positive reception of the toothed wheel or the hinge-pinion and the sliding plate in a relatively flat intermediate space. This space is formed by the base plate and the attached plate as the first and second door plate areas and a door outside and by the approximately 90.degree. deflection between the sl

REFERENCES:
patent: 4063763 (1977-12-01), Van Herpen
patent: 4616864 (1986-10-01), Douglas
patent: 4631937 (1986-12-01), Debus et al.
patent: 4754624 (1988-07-01), Fleming et al.
patent: 4848811 (1989-07-01), Laufenburg et al.
patent: 4930325 (1990-06-01), Ramsauer
patent: 4998757 (1991-03-01), Ramsauer
patent: 5118143 (1992-06-01), Gerard
patent: 5171047 (1992-12-01), Korb et al.
patent: 5318333 (1994-06-01), Dreifert
patent: 5419167 (1995-05-01), Yamada et al.

Affiliated with

Also associated with

Rating

Locking device for cabinet or cupboard doors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Locking device for cabinet or cupboard doors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Locking device for cabinet or cupboard doors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2239589