Patent ID: 7416151

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, 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, rotation corresponding to the rotation of the output shaft, mechanical connection of the first connecting mechanism to the take-up shaft being switchable; and a second connecting mechanism connecting the output shaft and the take-up shaft by a frictional clutch mechanism so as to transmit the rotation of the output shaft to the take-up shaft, wherein when the first connecting mechanism is switched so as to connect to the take-up shaft, the first connecting mechanism overrides transmission of power to the take-up shaft by the second connecting mechanism and wherein the first connecting mechanism has a first rotating body which is driven to rotate by the rotation of the output shaft; a second rotating body for transmitting rotation to the take-up shaft by receiving rotation of the first rotating body; and a gear train which is disposed so as to be able to transmit rotation of the first rotating body to the second rotating body, when the first connecting mechanism is switched so as to connect to the take-up shaft, the gear train having at least one planetary gear, and due to the planetary gear revolving, the rotation of the first rotating body is transmitted to the second rotating body.