Webbing retractor
AssigneesToyota Jidosha Kogyo Kabushiki Kaisha, Kabushiki Kaisha Tokai Rika Denki Seisakusho
InventorsToshimasa Yamamoto, Mamoru Mori, Eiichi Kinaga
Life of this patent
Estimating the term…
Abstract
A webbing retractor for winding an occupant restraining webbing in an emergency of a vehicle, wherein one end of one of resilient members, which are serially connected to each other, is connected to a takeup shaft, and, when a vehicle door is closed, a locking device is adapted to lock connecting portions of the resilient members, whereby bias of one of the resilient members is prevented from acting on said takeup shaft to lighten a takeup force, thereby relieving the oppressive feeling applied to the occupant.
Claims9
A webbing retractor for winding by its bias a webbing to restrain and protect an occupant in an emergency of a vehicle, comprising:
- (a) a takeup shaft for winding the occupant restraining webbing;
- (b) a first and a second resilient members serially connected to said takeup shaft for biasing said takeup shaft in series in the windup direction of said webbing;
- and
- (c) a locking device for locking the connecting portions of said first and second resilient members when a vehicle door is closed, whereby bias of one of the resilient members is prevented from acting on said takeup shaft, thereby decreasing the oppressive feeling applied to the occupant.
A webbing retractor for winding an occupant restraining webbing in a seatbelt system for protecting an occupant in an emergency of a vehicle, comprising:
- (a) a frame secured to a center pillar of the vehicle;
- (b) a takeup shaft pivotally supported on said frame for winding one end of said occupant restraining webbing;
- (c) a first spiral spring secured at one end thereof to said takeup shaft;
- (d) a ratchet wheel pivotally supported on said frame and secured thereto with the other end of said first spiral spring;
- (e) a second spiral spring being stronger in bias than said first spiral spring, secured at one end thereof to said ratchet wheel and secured at the other end thereof to said frame;
- and
- (f) a locking device, part of which is disposed within a moving path of the vehicle door for preventing said ratchet wheel from rotating in the windup direction of the webbing when the vehicle door is closed.
Dependencies are inferred from the claim text.