Abstract:
A latch assembly includes a chassis and a rotatable claw-type latch bolt moveably mounted on the chassis. The latch bolt has a closed position for retaining a striker and an open position for releasing the striker. The latch bolt is provided with a latch abutment remote from a center of rotation. The latch assembly further includes a pawl rotatable about a pawl axis and having an engaged position for holding the latch bolt in the closed position and a disengaged position that allows the latch bolt to move to the open position. The latch assembly includes an eccentric arrangement defining a first axis and the pawl axis remote from the first axis. The latch assembly also includes a reset lever rotatably fixed to the eccentric arrangement for mutual rotation with the eccentric arrangement about the first axis. The latch assembly includes a biasing lever configured to transmit a biasing force to the reset lever at a position remote from the first axis and to the latch bolt via the latch abutment. The latch assembly includes a biasing device arranged to apply the biasing force to the biasing lever. The latch assembly is configured such that when the pawl retains the latch bolt in the closed position, the biasing lever applies a force to the reset lever to promote disengagement of the pawl, and such that when the pawl is disengaged, the biasing lever promotes the rotation of the latch bolt into the open position.
Abstract:
A power release mechanism for a vehicle door latch includes a rotary claw having a mouth to releasably retain a striker, a pawl abutment and a cam surface. The power release mechanism includes a pivotably mounted pawl resiliently biased to contact the pawl abutment to retain the claw in a latched condition and to contact the cam surface when in a released condition. A power drive formation includes an input member configured to receive drive from a power actuator and an output member. One of the input member and the output member includes first and second stall abutments, and the other of the input member and the output member includes a follower configured for contact with the first and second stall abutments during power release of the pawl. Each of the first and second stall abutments is configured to retain the follower and thereby stall the power actuator. The first stall abutment is contactable by the follower to lift the pawl from the claw. The second stall abutment is contactable by virtue of the cam surface of the claw pivoting the output member away from the input member such that the follower disengages the first stall abutment, resulting in the retention of the follower at the second stall abutment until the pawl relatches with the claw.
Abstract:
An actuator includes an electromagnetic coil arrangement that is movable relative to a magnetic field generator; between a first position and a second position of the actuator. The actuator is arranged such that, when the actuator is in the first position, a pulse of current through the electromagnetic coil arrangement produces a region of magnetic field that repels the magnetic field generator from the first position and attracts the magnetic field generator towards the second position to move the actuator to the second position.
Abstract:
An injection molding method and system for an electrical circuit utilized in vehicle door latch mechanisms is disclosed herein. A mold is generally provided in which a mold cavity is formed therein from walls of the mold. An electrical circuit associated with vehicle door latch and/or integrated with the vehicle door latch can be located within the mold cavity. A plastics material can then be injection molded into the mold cavity of the mold, wherein the plastics material covers and seals the electrical circuit to provide insulation and environmental protection to the electrical circuit.
Abstract:
A vehicle closure locking system comprising person sensing means, authorization device detection means and a controller, the sensing means being capable of determining whether a person is located in the vehicle and the authorization device detection means being capable of detecting the presence of a co-operating authorization device within the vehicle, wherein the controller is programmed to instruct the detection means and sensing means to commence detecting and sensing respectively in response to a predetermined event and is further programmed to control the locked state of vehicle closure(s) in response to signals supplied periodically by the sensing means and signals supplied periodically by the authorization device detection means.
Abstract:
A method of assembly of a first and second component comprising the steps of providing the first component with a projection providing a second component with a plastics engagement surface assembling the first and second components such that the projection is held substantially rigid relative to the first component and the plastics engagement surface is plastically deformed around the projection then allowing the plastics engagement surface to further creep around the projection such that the force required to disassemble the first and second components increases.
Abstract:
Actuator for vehicle door locks provides powered shifting of a mechanism component while permitting manual operation thereof. A motor powers a driver annulus having internal teeth and notches in respective axial zones with each tooth being diametrically opposite a notch. A spring-loaded index across the annulus interior has a tail co-acting with the notches and a head co-acting with the teeth and is guided by fixed structure that it can only move angularly to displace the component to which it is linked, by indexing past a tooth when its tail is in a notch. Powered movement of the annulus causes the teeth to selectively shift the index, but manual displacement of the component causes the index to spring past the relevant tooth.
Abstract:
A latch mechanism includes a latch bolt moveable between an open position, a first safety position and a closed position. The latch mechanism further includes a power closure system operable to move the latch bolt from the first safety position to the closed position. The power closure system has a transmission path including a drive lever rotatable about a drive lever axis and being engageable with a drive surface of a further transmission path component. The transmission path is operable to connect a power actuator to the latch bolt. The latch mechanism has a first position at which the latch bolt is in the first safety position, the drive lever axis is in a first drive lever axis position, and the drive lever is engaged with the drive surface of the further transmission path component, a second position at which the latch bolt is in the closed position, the drive lever axis is in the first drive lever axis position, and the drive lever is engaged with the drive surface of the further transmission path component, and a third position at which the latch bolt is in the open position, the drive lever axis is in a second drive lever axis position, and the drive lever is disengaged from the drive surface of the further transmission path component.
Abstract:
A scissor apparatus for a latch assembly is disclosed, which includes a spring comprising a plurality of fingers for controlling the motion one or more sliders associated with said latch assembly, wherein said spring comprises a spring control independent of the actuation of such sliders. The fingers are generally integrated with the spring. Such a one-piece spring can be implemented as a stamped component with 2-off, 3-off or 6-off fingers to control the motion of the sliders. The stamped spring can clip onto existing latch assembly components in order to promote retention, and overcome friction with the latch assembly and return the sliders to a neutral position thereof.
Abstract:
A latch mechanism includes a latch plate and a latching element attached to the latch plate. A pawl engages the latching element at an interface. Applying a force to the pawl releases the latch mechanism. The latch mechanism also includes an enclosure for enclosing a portion of the latching mechanism.