Locking mechanism for webbing retractor

Details Locking mechanism for webbing retractor Locking mechanism for webbing retractor

1989-03-28

1990-05-01

Watkins, Donald

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

A62B 3500, B65H 7548

Patent

active

049211846

ABSTRACT:
A locking mechanism for looking a winding shaft wound a webbing to prevent the winding shaft from rotating at excessive movement more than a predetermined amount of acceleration in a horizontal direction. The locking mechanism has an operating member which is inclined at the excessive movement more than the predetermined amount of acceleration in the horizontal direction to lock the winding shaft. The operating body has a pair of plate-like inertia portions extended symmetrically with respect to the axis of the winding shaft in the direction to approach an outer periphery of the webbing wound around the winding shaft. The operating body is inclined by the inertia portions when the acceleration is exerted. Thus, the locking mechanism locks the winding shaft by means of these inertia portions and the locking mechanism can be made small in the vertical direction.

REFERENCES:
patent: 3831878 (1974-08-01), Griffin
patent: 3937416 (1976-02-01), Henderson
patent: 3944162 (1976-03-01), Henderson
patent: 3990651 (1976-11-01), Romanzi et al.
patent: 4015796 (1977-04-01), Higbee
patent: 4220294 (1980-09-01), DiPaola

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