A power latch assembly for a vehicle door of a motor vehicle includes a ratchet configured for movement between striker capture and striker release positions, wherein the ratchet is biased toward the striker release position, and a pawl configured for movement between a ratchet holding position, whereat the pawl maintains the ratchet in the striker capture position, and a ratchet releasing position, whereat the pawl releases the ratchet to the striker release position. A powered actuator is energizable to move the pawl from the ratchet holding position to the ratchet releasing position, wherein a multistage reduction mechanism operably connects an output of the powered actuator to the pawl to provide a first release torque on pawl during normal use and a greater second release torque on pawl during emergency use.

A power latch assembly for a vehicle door of a motor vehicle includes a ratchet configured for movement between striker capture and striker release positions, wherein the ratchet is biased toward the striker release position, and a pawl configured for movement between a ratchet holding position, whereat the pawl maintains the ratchet in the striker capture position, and a ratchet releasing position, whereat the pawl releases the ratchet to the striker release position. A powered actuator is energizable to move the pawl from the ratchet holding position to the ratchet releasing position, wherein a multistage reduction mechanism operably connects an output of the powered actuator to the pawl to provide a first release torque on pawl during normal use and a greater second release torque on pawl during emergency use.

A transmission mechanism for a vehicle door handle is provided, the handle including a handle lever, movable between a flushing position and a ready position, the mechanism attachable to the lever and to an electric motor, and including a lever shaft connectable to the lever, a rotation of which causes motion between the positions; a reduction mechanism to adapt an output torque of the motor into a rotational motion of the shaft, including first and second reduction stages each having a worm drive, the first including a first worm and a first worm gear, and the second having a second worm and another worm gear rotationally coupled to the shaft; and a brake mechanism frictionally engaging a rotating element of one of the stages when the shaft reaches a rotational braking position between the positions to stop the shaft in a position where the lever is in the ready position.

A transmission mechanism for a vehicle door handle is provided, the handle including a handle lever, movable between a flushing position and a ready position, the mechanism attachable to the lever and to an electric motor, and including a lever shaft connectable to the lever, a rotation of which causes motion between the positions; a reduction mechanism to adapt an output torque of the motor into a rotational motion of the shaft, including first and second reduction stages each having a worm drive, the first including a first worm and a first worm gear, and the second having a second worm and another worm gear rotationally coupled to the shaft; and a brake mechanism frictionally engaging a rotating element of one of the stages when the shaft reaches a rotational braking position between the positions to stop the shaft in a position where the lever is in the ready position.

A door latch and in particular a motor vehicle door latch, which is equipped with a locking mechanism consisting substantially of a catch and a pawl, further having at least one locking mechanism sensor to determine the closing/opening state of the locking mechanism, further having a control unit for evaluating signals of the locking mechanism sensors, and having a trigger sensor for opening the locking mechanism in an electro-motoric manner. According to the invention, a multiple operation of the trigger sensor regardless of the state of the locking mechanism sensor is implemented for opening the locking mechanism.

A door latch and in particular a motor vehicle door latch, which is equipped with a locking mechanism consisting substantially of a catch and a pawl, further having at least one locking mechanism sensor to determine the closing/opening state of the locking mechanism, further having a control unit for evaluating signals of the locking mechanism sensors, and having a trigger sensor for opening the locking mechanism in an electro-motoric manner. According to the invention, a multiple operation of the trigger sensor regardless of the state of the locking mechanism sensor is implemented for opening the locking mechanism.

The present invention relates to a vehicle door latch, and more particularly, to a vehicle door latch having a safety device, which is capable of mechanically or electrically preventing an electrical malfunction of the vehicle door latch, installed at the interior or exterior thereof so that safety of the vehicle door latch is improved.

A motor control system for a closure latch assembly is provided and includes a power release motor operatively coupled to a power release gear of the closure latch assembly. A plurality of relays are coupled between one of a first motor terminal and a second motor terminal and one of a voltage supply and an electrical ground to provide one of a first motor current flow to drive the power release motor in a first direction and a second motor current flow to drive the power release motor in a second direction. An electronic control unit is coupled to the plurality of relays and configured to command the plurality of relays to provide the first motor current flow in one of a power release mode and a release mode and the second motor current flow in one of a reset mode and an unlock mode.

A motor control system for a closure latch assembly is provided and includes a power release motor operatively coupled to a power release gear of the closure latch assembly. A plurality of relays are coupled between one of a first motor terminal and a second motor terminal and one of a voltage supply and an electrical ground to provide one of a first motor current flow to drive the power release motor in a first direction and a second motor current flow to drive the power release motor in a second direction. An electronic control unit is coupled to the plurality of relays and configured to command the plurality of relays to provide the first motor current flow in one of a power release mode and a release mode and the second motor current flow in one of a reset mode and an unlock mode.

A locking device for a motor vehicle includes an actuating lever, a lock and at least one Bowden cable, which is arranged between the actuating lever and the lock, wherein the lock can be actuated by means of the actuating lever and with the help of the Bowden cable and a functional unit, which is arranged on the Bowden cable and has an electric drive, and wherein the lock can be actuated by means of the functional unit at least in an assisting manner or an actuation can be prevented.