Patent ID: 8708269
Filing Date: 2014-04-29
Classification: B60R

Abstract:
1. A webbing take-up device comprising: a spool to which a base end side of webbing is anchored and that takes up the webbing by rotating in a take-up direction; a lock portion that restricts rotation of the spool in a pullout direction opposite to the take-up direction, in a coupled state capable of transmitting rotation force to the spool; a sensor portion that actuates in a state of rapid vehicle deceleration in which a vehicle is being decelerated with a deceleration of a specific value or greater, a state in which the spool is rapidly rotated with an acceleration of a specific value or greater in the pullout direction, or a combination thereof; a drive portion that rotates the spool in the take-up direction by forward driving force output and that actuates the sensor portion; and a clutch portion that couples the spool and the lock portion by actuation of the sensor portion, wherein the lock portion is interposed between the drive portion and the spool, and enables rotation force output from the drive portion to be transmitted to the spool side; and the clutch portion is interposed between the spool and the lock portion, and actuates the sensor portion by output from the drive portion of forward driving force such that a same clutch portion can transmit both said driving force to said spool from said drive portion and a rotating restricting force to said spool from the lock portion.