Patent ID: 7090161

Claim:
A webbing retractor for an elongated, strip-shaped webbing belt used for application to a body of a vehicle occupant riding in a vehicle, the webbing retractor comprising: a take-up shaft which is held so as to be rotatable, and to which one end of the webbing belt is anchored, and which winds the webbing belt around the take-up shaft; a driving mechanism which has an output shaft driven by a motor, and which, by driving and rotating the output shaft in a predetermined direction, rotates the take-up shaft at least in a take-up direction; and a power transmitting mechanism which transmits rotation of the output shaft to the take-up shaft, the power transmitting mechanism having: a first connecting mechanism for transmitting, to the take-up shaft, motor driven rotation of the output shaft, mechanical connection of the first connecting mechanism to the take-up shaft being dependent upon a preselected state of the motor driving the output shaft; and a second connecting mechanism connecting the output shaft and the take-up shaft by a frictional clutch mechanism so as to transmit motor driven rotation of the output shaft to the take-up shaft, wherein when the preselected state of said motor occurs the first connecting mechanism transmits power from the output shaft to the take-up shaft, and cancels transmission of power from the output shaft to the take-up shaft by the second connecting mechanism.