Emergency locking device for safety belt retractor

Details Emergency locking device for safety belt retractor Emergency locking device for safety belt retractor

1982-07-15

1984-02-07

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

A62B 3502, B65H 7548

Patent

active

044298412

ABSTRACT:
An emergency locking device equipped with a safety belt retractor wherein a reel (2) for winding a safety belt (1) thereon is rotatably mounted on a fixed reel support (4) with a shaft (3) fixed to the reel (2) being journaled on the support (4) and the reel (2) is biased to rotate in a belt rewinding direction by a return spring (5). In order to initiate the locking operation of the emergency locking device, there is provided a locking initiating inertia member (21) having its peripheral surface radially offset from the central axis of the shaft (3). The locking initiating inertia member (21) is rotatably mounted on the shaft (3). The movement of the locking initiating inertia member (21) is transmitted to a locking transmission pawl 19, the locking transmission pawl (19) is then engaged with one of inner ratchet teeth (14) of a drum-shaped clutching wheel (12) whereby the rotation of the shaft (3) is transmitted to the clutching wheel ( 12), the rotation of which makes a locking pawl 9 moved to be engaged with a ratchet wheel (8) fixed to the reel (2), so that the rotation of the shaft (3) is prohibited and, therefore, the withdrawal of the safety belt (1) is consequently prohibited.

REFERENCES:
patent: Re29594 (1978-03-01), Takada
patent: 3410153 (1968-11-01), Merna
patent: 3552676 (1971-01-01), Weber
patent: 3955774 (1976-05-01), Weman
patent: 4177962 (1979-12-01), Hildebrandt
patent: 4310129 (1982-01-01), Morinaga

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