Patent ID: 8061742

Claim:
A door locking system for a vehicle, comprising: a striker adapted to be provided at a vehicle body; a latch adapted to be mounted to a vehicle door, the latch engaging with the striker and rotating; a pawl engaging with the latch, the pawl allowing the latch to rotate in a locking direction that strengthens the engagement between the latch and the striker and regulating the latch to rotate in a lock releasing direction that is a reverse direction of the locking direction; a lock release operating portion moving the pawl to a release position to release the regulation on the rotation of the latch; a latch driving motor rotationally driven in one direction to rotationally drive the latch in the locking direction to shift the door to a fully closed state in which the door is completely closed when the vehicle door falls into a half closed state, the latch driving motor rotationally driven in the other direction to move the pawl to the release position when the lock release operating portion is operated; a power transmission system switching mechanism disposed between the latch driving motor, the pawl and the latch, the power transmission system switching mechanism connecting a motor output shaft of the latch driving motor, which is rotationally driven in the one direction, to the latch for rotationally driving the latch in the locking direction, and connecting the motor output shaft of the latch driving motor, which is rotationally driven in the other direction, to the pawl for moving the pawl to the release position, the power transmission system switching mechanism including a first canceling mechanism for switching a power state between a power transmitting state, in which power and a reaction force are transmitted from the motor output shaft to the pawl, and a power shutoff state, in which the power and the reaction force are shut off from the motor output shaft and the pawl; and wherein the latch includes plural latches and the pawl includes plural pawls provided for a single vehicle door, the latch driving motor being provided for the single vehicle door, the power transmission system switching mechanism being configured so that the motor output shaft rotationally driven in the one direction is connected to all of the plural latches and the motor output shaft rotationally driven in the other direction is connected to all of the pawls.