Device for preventing a belt from being pulled from a retractor

• US 4,185,791 A
• Filed: 10/10/1978
• Issued: 01/29/1980
• Est. Priority Date: 10/24/1977
• Status: Expired due to Term

• Current Assignee: Takata Sogyo Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Original Assignee: Takata Sogyo Corporation (Ningbo Junsheng Investment Group Co., Ltd.)
• Inventors: Takada, Juichiro
• Primary Examiner(s): Jillions, John M.
• Application Number:
  US05/950,019
• Time in Patent Office: 476 Days
• Field of Search: 242/107.2, 242/107.4 R, 242/107.4 B, 242/107.3, 297/388, 297/389, 280/744-747, 188/136, 188/188
• US Class Current: 242/381.4
• CPC Class Codes: A44B 11/10 sliding wedge
• CPC Class Codes: B60R 22/06 having the belt or harness connected to a member slidable in a vehicle-mounted track
• CPC Class Codes: B60R 22/1855 the means being sensitive to belt tension

Abstract

A device for preventing a belt from being pulled from a retractor comprises a clamp holder and a base member having closely spaced surfaces defining a gap through which the belt passes and from which the belt runs off forwardly at an angle away from the base member. The holder receives a clamp which has a gripping surface protruding slightly from the holder surface and, in part, defining the gap. The holder is pivoted on the base member, and the clamp and holder are spring-loaded about the pivot axis in a direction which holds the clamp out of engagement with the belt. An abrupt force tending to pull the belt abruptly forward through the gap forces the holder to pivot or rock rearwardly, thus engaging the gripping surface of the clamp with the belt. Forwardly oblique, transverse wedging surfaces on the clamp and clamp holder wedge the clamp tightly against the belt and prevent it from being pulled forward.

Claims

1. A device for preventing a belt from being pulled from an emergency locking retractor or the like comprising a clamp holder and a base member having closely spaced surfaces defining a narrow gap through which the belt passes and from which the belt runs off forwardly at an angle generally away from the base member around a forward nose portion of the clamp holder, a clamp received by the clamp holder and having a belt-gripping surface which is generally continuous to but protrudes from said surface of the clamp holder and defines part of the belt-receiving gap, generally matching wedge surfaces on the clamp holder and clamp oriented forwardly obliquely and transversely to the belt-receiving gap and adapted selectively to wedge the clamp into engagement with the belt upon abrupt movement of the belt forwardly through the gap, means mounting the clamp holder for pivotal movement about an axis transverse to the direction of movement of the belt, spaced from the gap and intermediate of the forward end of said gap and the rearward end of the gripping surface of the clamp, and means resiliently urging the clamp and clamp holder about the pivot axis in a direction tending to move the nose portion of the clamp holder toward said surface of the base member and to hold the clamp away from the belt, the resilient means yielding to a force exerted on the nose portion of the clamp holder upon an abrupt forward pull of the belt such that the clamp and clamp holder rotate about the pivot axis in a direction which brings the clamp into engagement with the belt, whereupon the clamp is pulled forward and is wedged toward said surface of the base and grips the belt and the belt is locked against forward movement.