Web clamping retractor mechanism with swinging housing

A retraction mechanism comprising:

• a winding housing having a wedge pusher member;
• a spool having an axis of rotation fixedly supported within the winding housing, the spool rotationally supported in the winding housing having webbing wound thereon;
• a rewind spring for rewinding the webbing onto the spool;
• sensor means responsive to one of vehicle deceleration or web acceleration in excess of a determinable limit for pre-blocking the rotation of the spool prior to the initiation of web clamping;
• support frame means for rotationally supporting the winding housing, web clamping means supported in the support frame means, in a deactivated condition, for clamping the webbing when activated, wherein after the pre-blocking of the spool and in response to a continued force on the web the winding housing rotates against a bias force of a bias spring located between the winding housing and the support frame means urging the web pusher member into engagement with the web clamping means to clamp the web therebetween.