Patent ID: 9738250
Date: 2017-08-22
CPC Classifications: B60R

Claim:
1. A seatbelt retractor comprising: a housing having a first side wall portion and a second side wall portion facing each other; a take-up drum supported rotatably by and between the first side wall portion and the second side wall portion, and adapted to take up a webbing thereon; a ratchet gear provided at one end of the take-up drum; a pawl rotatably supported at the first side wall portion and which does not engage with the ratchet gear in normal state but engages therewith in response to a predetermined acceleration of a vehicle or a predetermined pull-out acceleration of the webbing to prevent rotation of the take-up drum in a pull-out direction of the webbing; a pretensioner mechanism mounted on the second side wall portion and actuated in case of vehicle collision to cause the take-up drum to rotate in a take-up direction of the webbing; and a locking mechanism adapted to hold the pawl in a state of engaging with the ratchet gear by actuation of the pretensioner mechanism, wherein the locking mechanism comprises: wherein in the actuation of the pretensioner mechanism, when the pawl, pressed by the pressing portion and in contact with the ratchet gear rotating in the take-up direction, passes over each of teeth of the ratchet gear, the coupling member is elastically twisted and deformed between the arm portion and the pressing portion to hold the pawl in a state of being urged toward the engagement direction with the ratchet gear.