B - Operations – Transporting – 60 – R
Patent
B - Operations, Transporting
60
R
B60R 22/42 (2006.01) B60R 22/36 (2006.01) B60R 22/405 (2006.01)
Patent
CA 2122341
This invention relates to locking means of a seat belt retractor equipped with an emergency lock which in an emergency locks the withdrawal of webbing. The locking means of this retractor comprises a ratchet wheel (16) and a pawl (32); the pawl comprises two teeth, and the pawl and the ratchet wheel are positioned in such a way that when the load on the webbing is relatively small only one of the teeth of the pawl engages with a tooth of the ratchet wheel and there is a small gap between the other tooth of the pawl and the tooth of the ratchet wheel corresponding thereto and when the load on the webbing is relatively large both of the teeth of the pawl engage with teeth of the ratchet wheel. As a result, because the load on each tooth is half of what it is when the pawl has one tooth only, twice the torque can be withstood and the diameter of the ratchet wheel can be reduced.
Amatsu Toshihiro
Nakaya Hidekazu
Ashimori Kogyo Kabushiki Kaisha
Kirby Eades Gale Baker
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