Webbing retractor

Details Webbing retractor Webbing retractor

1991-08-12

1992-12-29

Tyson, Karin L.

Land vehicles

Wheeled

Attachment

297478, 2421072, B60R 2242

Patent

active

051746042

ABSTRACT:
A webbing retractor for taking up an occupant-restraining webbing used in a seat belt apparatus for a vehicle has a takeup shaft held by a frame, and the webbing is wound around the takeup shaft. The takeup shaft is pivotally held at a substantially intermediate portion of each of a pair of arms. One end of each arm is pivotally supported by a support shaft, and the arms are adapted to rotate about the support shaft. At the time of a sudden deceleration of the vehicle, a clamp plate held at a distal end of a clamp lever is pushed upward by an actuating device including the arms to cause the webbing to be clamped, and when a clamping force exceeding a predetermined value is applied to the webbing, a projection formed at a proximal end of the clamp lever presses a thin-walled portion toward a rectangular hole so as to deform the thin-walled portion, which in turn causes the clamp plate to move in a direction in which the clamped state of the webbing is canceled, thereby setting a webbing-clamping force at a predetermined level or below.

REFERENCES:
patent: 4420126 (1983-12-01), Ando
patent: 4422593 (1983-12-01), Takada
patent: 4667894 (1987-05-01), Izuchi et al.
patent: 4687253 (1987-08-01), Ernst
patent: 5029770 (1991-07-01), Tanaka

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