Retractor having vehicle sensitive sensor disabling mechanism

摘要

A seat belt retractor ( 10 ) includes a spool ( 104 ) about which seat belt webbing ( 18 ) is wound. The spool ( 104 ) is supported for rotation in a belt withdrawal direction and in an opposite belt retraction direction. A vehicle sensitive sensor ( 180 ) is responsive to at least one sensed vehicle condition for preventing rotation of the spool ( 104 ) in the belt withdrawal direction. The retractor ( 10 ) also includes a mechanism ( 200 ) for controlling the vehicle sensitive sensor ( 180 ). The mechanism ( 200 ) includes a ring gear ( 212 ) and a control lever ( 246 ). The ring gear ( 212 ) has internal gear teeth ( 234 ) and an external surface ( 236 ) having a cam profile. The external surface ( 236 ) of the ring gear ( 212 ) actuates the control lever ( 246 ) to enable and disable the vehicle sensitive sensor ( 180 ).