Patent ID: 9694784
Date: 2017-07-04
CPC Classifications: B60R

Claim:
1. A webbing take-up device comprising: a spool that takes up a webbing by rotating in a take-up direction; a lock mechanism that regulates rotation of the spool in a pull-out direction, which is opposite to the take-up direction, by switching from an actuatable state to an actuated state; a switch member having one end that is rotatably supported on one side of a support body, the switch member rotating in a direction about a rotational axis on its one end such that an opposite end of the switch member moves toward an opposite side of the support body as a result of a certain amount or more of the webbing being pulled out from the spool so as to switch the lock mechanism from the actuatable state to the actuated state, the switch member rotating in an opposite direction about the rotational axis away from the opposite side of the support body as a result of a certain amount or more of the webbing being taken up onto the spool so as to switch the lock mechanism from the actuated state to the actuatable state; a window portion that is formed in the support body and at which a regulation wall is formed, the regulation wall having an inner surface that is orthogonal to the rotational axis of the switch member; an opening that is formed in the support body, a portion of the window portion which is at the one side of the support body communicating with the opening; and an engagement portion that is formed at the switch member at the opposite end, the engagement portion being entered inside the window portion by rotating with respect to the window portion from the opening toward the opposite side of the support body in the direction about the rotational axis of the switch member so that a distal end side of the engagement portion, which is entered inside the window portion, faces and is captured by the inner surface of the regulation wall in the axis direction of the rotational axis of the switch member in a state in which the distal end side of the engagement portion is located at a third side of the support body in the axis direction of the rotational axis of the switch member and the regulation wall is located at the a fourth side of the support body that is opposite to the third side such that the distal end side of the engagement portion comes into contact with the regulation wall when the switch member is displaced in a direction away from the support body in the axis direction of the rotational axis of the switch member.