Locks – Systems – Operation and control
Patent
1998-04-23
2000-07-18
Barrett, Suzanne Dino
Locks
Systems
Operation and control
70262, 702791, 292216, E05B 5300
Patent
active
060890576
DESCRIPTION:
BRIEF SUMMARY
This invention relates to locking systems for vehicle doors and other closures of the kind in which the individual locks are interconnected through a central control unit for electrical actuation whereby locking or unlocking of all doors can be effected from a single control station actuated from within or outside the vehicle, herein referred to as "Central locking systems". More specifically the invention relates to the provision in said system of a power operated lock actuator incorporating a superlocking facility whereby the associated door latch cannot be freed from a locked condition even if access is gained to latch actuating elements within the vehicle. e.g. the interior door handle or sill button as by breaking a window or probing into or through the door.
It is known from our granted patent published GB 2285476-A to provide a power operated lock actuator with superlocking facility, said actuator including an actuator lever powered by main drive means for selectively setting lock mechanism in locked or unlocked conditions by movement between respective locked and unlocked positions; and linkage operable to drive connect a manual locking element to the actuator lever for manual shifting between said positions, the linkage including a longitudinally moveable sliding link coupled to the actuator lever and connected to the manual locking element through a floating connecting pin engaged in guide slots of said lever and element and shaped to provide a lost motion portion; superlocking being effected by selective powered shifting of an element also engaged with the pin to carry the latter into the lost motion portion whereby motion of the manual element is not transmitted to the sliding link.
The object of the invention is to provide an actuator having a remotely controllable powered superlocking facility which is convenient and reliable in operation, economical to produce, assemble and install, and which provides a high standard of security against tampering and attempted unauthorised entry to the vehicle.
According to the invention there is provided a power actuator as describe in appended claim 1.
Conveniently both the actuator element and the manual locking element are levers fulcrumed for angular movement in a plane or planes including or parallel to the connector axis, said first and second drive formations co-acting with arms of said levers.
Conveniently the actuator lever or other actuator element remains connected with the transmission connector throughout the angular movement of the latter and only the manual locking lever or equivalent element is disengaged therefrom at the disengaged position.
With the latter arrangement the assembly preferably further includes restoring means comprising a fixed camming abutment co-acting with a portion of the transmission connector remote from its axis at or near the end of its reciprocating travel towards the unlocking condition to return it automatically from the disengaged to the engaged angular position whereby connection with the manual locking element can be restored by operation of the actuator element.
To facilitate said reengagement the second drive formation and/or the coacting part of the manual locking element may include a resiliently loaded crank pin for self-engagement as restoring alignment of the components takes place.
The main drive means will conveniently include a main rotary electric drive motor with provision for alternative manual operation, for example from an external key operated lock cylinder of the respective vehicle door in use.
Said angular movement of the transmission connector is conveniently effected by a second or super locking rotary electric drive motor, for example having a pinion on its output shaft meshing with a toothed sector of the transmission connector.
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 parts of an actuator assembly, and
FIG. 2 is a section in the plane of the longitudinal axis of a transmiss
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Barrett Suzanne Dino
Meritor Light Vehicle Systems (UK) Lt.
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