Webbing take-up device

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.