Webbing retractor

Details Webbing retractor Webbing retractor

1992-11-06

1994-04-12

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

B60R 2238

Patent

active

053018940

ABSTRACT:
In a webbing retractor, a winding shaft has both ends rotatably supported by a frame and serves to wind-up an occupant securing webbing in a layer fashion. A lock ring is supported relatively rotatably with the winding shaft. The lock ring is usually rotated according to the winding shaft, and operated to block a rotation of the winding shaft in a webbing drawing-out direction when relatively rotated with the winding shaft. An inertial mass body is integrally secured to the lock ring so as to rotate the lock ring relatively with the winding shaft by inertial force when rapidly rotating the winding shaft. A restricting member is provided for the inertial mass body so as to engage the winding shaft, and serves to restrict relative rotation between the winding shaft and the lock ring within a predetermined range.

REFERENCES:
patent: 4058272 (1977-11-01), Takada
patent: 4083512 (1978-04-01), Rumpf
patent: 4310129 (1982-01-01), Morinaga
patent: 4518131 (1985-05-01), Butenop et al.
patent: 4597543 (1986-07-01), Mori et al.
patent: 4597544 (1986-07-01), Fohl
patent: 4905928 (1990-03-01), Katsuno et al.

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