Patent ID: 8448889
Filing Date: 2013-05-28
Classification: B60R

Abstract:
1. A webbing take-up device comprising: a tube-shaped spool to which a base end side in a longitudinal direction of an elongated band-shaped webbing belt is connected, and which takes up the webbing belt from the base end side of the webbing belt by rotation thereof in a take-up direction; and a lock section that includes an acceleration sensor which is actuated in a case in which an acceleration at a time of a rapid deceleration of a vehicle is a predetermined value or more, and a lock section main body that is actuated by actuation of the acceleration sensor and that regulates rotation of the spool in a pull-out direction that is opposite to the take-up direction, wherein the acceleration sensor includes: an inertial mass body; a sensor frame on which the inertial mass body is placed, the sensor frame allowing inertial movement of the inertial mass body when the acceleration is the predetermined value or more; a trigger member that is provided at the sensor frame at the upper side of the inertial mass body, the trigger member being pushed up by the inertially moving inertial mass body to be rotated around a rotating shaft, and actuating the lock section main body by rotation thereof; and a supporting member that is provided at the sensor frame and that supports the rotating shaft in a rotatable manner by elastically press-contacting end portions of the rotating shaft which are at both sides in an axis direction of the rotating shaft to press the rotating shaft from the both sides.