Locks – Systems – Operation and control
Patent
1998-07-23
1999-08-03
Gall, Lloyd A.
Locks
Systems
Operation and control
702791, 292201, 292DIG27, E05B 4700
Patent
active
059310340
DESCRIPTION:
BRIEF SUMMARY
This invention relates to lock actuator mechanism for doors and other closures of vehicles. It has particular but not exclusive application to actuator mechanisms forming part of locking systems of the kind in which the individual locks are power operable and interconnected through a central control unit for electrical actuation whereby locking or unlocking of all doors can be effected from a single control station operable from within or outside the vehicle, herein referred to as "central locking systems".
More specifically the invention relates to mechanism providing a superlocking facility whereby the latch of the door operatively associated with the particular mechanism cannot be freed from a locked condition even if access is gained to the interior door handle or other manual actuating elements within the vehicle, for example in attempting unauthorised intrusion by breaking a window or probing into or through the door.
It is known from DE-U-29511451 to provide power operable mechanism incorporating a superlocking facility which can be set or cancelled by remote operation, and including provision for key controlled manual override that the respective door can be opened to provide authorized access even if the power operation should malfunction or fail; the superlocking operating by shifting a coupling element transmitting down from an input to an output member of the mechanism to an inoperative position authorized overriding operating by automatically returning said element to its drive position independently of power actuation.
The object of the invention is to provide actuator mechanism having a remotely controllable powered or other superlocking facility which is convenient and reliable in operation, of simple and durable construction, which can readily be provided by modification of existing patterns of latch and locking assemblies, and which enables authorized access to the vehicle even if powered operation should break down or fail, for example if the vehicle has been left locked and parked and the battery has gone flat, by a particularly convenient and economical construction.
BRIEF DESCRIPTION OF THE DRAWINGS
An example of the invention is now more particularly described with reference to the accompanying drawings wherein:
FIG. 1 is an exploded perspective view of components of a lock actuator mechanism;
FIGS. 2-5 are elevations of said components in their assembled relationship and showing them in a sequence of different operating positions, and
FIG. 6 is a like elevation of a modified form of said components.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The mechanism described will be incorporated into a vehicle door latch and locking assembly of known kind having remotely controlled power operation as part of a central locking system of the vehicle. Only such parts of the latching cad locking mechanisms of the assembly as are necessary to the understanding of these examples of the invention are here described and shown in the drawings.
The assembly will include latching means (not shown) releasably retaining the door at the closed position, the latching means being released for opening the door by the operation of interior or exterior door handles (not shown).
Said assembly includes a mounting formation 8 (shown only in part in FIG. 1) locating its various components and constructed to form a housing substantially containing and protecting them both from ingress of dirt and from any unauthorised probing or other access with a view to tampering with the mechanism.
Referring now to FIGS. 1-5 of the drawings said assembly includes lock actuator mechanism having a main locking lever 10 secured on a drive shaft 12 of a main powered actuator 14 (FIG. 1) incorporating an electric drive motor. Actuator 14 is selectively operated from the central system to shift lever 10 angularly between a locked position shown in FIGS. 2 and 4 with its arms generally horizontal, and an unlocked position shown in FIGS. 3 and 5 rotated clockwise by about 30.degree. from the locked position. Lever 10 is conn
REFERENCES:
patent: 4334704 (1982-06-01), Yamada
patent: 5618068 (1997-04-01), Mitsui et al.
Gall Lloyd A.
Meritor Light Vehicle Systems (UK) Ltd.
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