Webbing retractor
AssigneesToyota Jidosha Kogyo Kabushiki Kaisha, Kabushiki Kaisha Tokai Rika Denki Seisakusho
InventorYuji Nishimura
Life of this patent
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Abstract
A lock mechanism adapted to be actuated by an acceleration sensor in an emergency of a vehicle prevents webbing windoff, whereby an occupant is restrained. After completion of a collision, the manual operation of a release lever releases the action of the lock mechanism, so that the occupant can unfasten the webbing from himself to escape from the vehicle to outside. Thereafter, when the webbing is wound up the release lever is restored, so that the lock mechanism can lock again, thereby enabling to secure the restraint of the occupant for a subsequent emergency.
Claims9
A webbing retractor for use in a seatbelt system for restraining and protecting an occupant in an emergency of a vehicle, comprising:
- (a) a takeup shaft for winding up a webbing for restraining the occupant;
- (b) a lock mechanism for preventing the webbing windoff rotation of said takeup shaft in an emergency of the vehicle so as to restrain the occupant with the webbing;
- (c) a release lever for releasing the locking action of said lock mechanism in operation to allow the webbing to be wound off from the takeup shaft;
- (d) a retaining arm for retaining an actuated position of said release lever to maintain an unlocked condition of the lock mechanism;
- and
- (e) a release plate for releasing the retention of the release lever by said retaining arm during webbing windup rotation of said takeup shaft to allow the release lever to be restrored;
- whereby the webbing windoff by the occupant resumes the action of the lock mechanism during the fastening of the webbing to the occupant.
Dependencies are inferred from the claim text.