Belt retractor with tongue/buckle controlled locking cam

摘要

A retractor having means for controlling the withdrawal of belt therefrom being operated by insertion of a tongue into a buckle. A retractor frame has a spring biased rotatably mounted spool wrappingly receiving one end of a belt harness with the belt harness having an opposite end with buckle fixed thereto to receive a tongue mounted adjacent the retractor frame. A spring biased locking bar is engageable with ratchet shaped end plates of the spool. A cam plate pivotally mounted adjacent the spool is contactable against the locking bar. Insertion of the tongue into the buckle causes movement of the cam plate allowing the cam plate to rotate away from the locking bar. The locking bar is then pivotable into the ratchet shaped spool end plate preventing further withdrawal of the belt harness.