Closure fasteners – Bolts – Swinging
Patent
1998-11-23
2000-09-26
Dayoan, B.
Closure fasteners
Bolts
Swinging
292201, 292DIG23, E05C 306
Patent
active
061233714
DESCRIPTION:
BRIEF SUMMARY
This invention relates to lock actuator mechanism for doors and other closures of vehicles. It has particular 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".
The object of the invention is to provide actuator mechanism incorporating a child safety 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 the respective door to be secured even if powered operation should break down or fail.
According to the invention there is provided vehicle door lock actuator mechanism including connection to an interior manually actuable element (e.g. an interior door handle) selectively operable to shift said lever about its fulcrum axis between first and second angular positions; whereby displacement of the output lever from a first to a second angular position releases the door from a latched condition in use; said levers so that it is positively displaced on angular movement thereof and engaging a drive formation of the other of said levers extending longitudinally of an arm thereof and having a portion shaped to permit relative movement between the dog and said arm laterally of the latter; between first and second positions to shift the dog longitudinally of said lever arm between an engaged condition respective to the first position at which the dog couples the levers for angular movement in unison, and a lost motion child safety condition respective to the second position at which the dog is aligned with said portion so that angular movement of the input lever between its first and second positions is not transmitted to the output lever for releasing the latch, said actuator being manually operable by means rendered inaccessible by the closing of the door; by a main power actuator between a locked condition at which the associated latch is secured against release and an unlocked position freeing the latch for release; and locking element permitting operation of the locking element without affecting the setting of the security actuator to its said first and second positions, but movement of that actuator to a third position carrying the locking element to the locked condition whereby the mechanism can be set to lock the door on closing for securing the vehicle without operation of the power actuator.
Conveniently the output lever is fulcrummed on the mounting formation co-axially with the input lever and an arm of the output lever is in substantially face to face relationship with an arm of the input lever when both levers are at the same angular position, the drive dog engaging drive formations extending longitudinally of both arms and being shifted therealong by the security actuator.
The security actuator and the main locking element may both be levers and may be fulcrummed co-axially, the drive dog being carried on a link pivotally connected to an arm of the security actuator lever and said lost motion connection including a pin carried by the actuator lever arm co-acting in an arcuate slot in an arm of the locking lever.
Said actuator lever will be operatively enclosed in the door structure except for an operating button or other formation exposed in or on a surface part of the door which is accessible for manual engagement only when the door is open.
An example of the invention is now more particularly described with reference to the accompanying drawings wherein:
FIG. 1 a side elevation of components of a lock actuator mechanism;
FIGS. 2 and 3 are elevations of said components showing them in respective different operating positions, and
FIG. 4 is a like elevation of a modified form of said components.
The mechanism described wi
REFERENCES:
patent: 4334704 (1982-06-01), Yamada
patent: 4492395 (1985-01-01), Yamada
patent: 4978154 (1990-12-01), Kleefeldt
patent: 5069491 (1991-12-01), Weinerman
patent: 5538298 (1996-07-01), Ikeda
Dayoan B.
Estremsky Gary
Meritor Light Vehicle Systems
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