Importance

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Abstract

A safety belt retraction apparatus is provided for use in a vehicle having at least one door and a chassis. The apparatus includes a safety belt retractor mechanism having a reel about which the webbing of the safety belt is wound. The reel is adapted to let out and take up the webbing. The safety belt retraction apparatus further includes a ratchet wheel associated with the take-up reel and a locking member mounted on a frame of the retractor mechanism for engagement with the ratchet wheel to stop protraction of the belt therefrom. An inertia member having a movable head is mounted on the frame, and the head is movable with inertia forces. The head is supported by a threaded adjustment member which is movable in discrete steps. The safety belt retractor mechanism also includes a transfer bar pivotally mounted on the frame and having a portion engageable with the head of the inertia member. The transfer bar has a free end which, when moved, contacts the locking member, urging it for movement into the ratchet wheel. The transfer bar is made of resilient material to store spring energy which increases the urging force in the event that the locking member is not free to travel its full extent into the ratchet wheel.

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First Claim