Automatic seat belt take-up mechanism - has return spring mounted on same side as inertial blocking system to save space

摘要

The design concerns an automatic seat belt take-up mechanism, on which the interia blocking assembly is fitted on the same side as the return spring. Hereby savings in space requirement for the mechanism are achieved. One end of spool (14) is seated in bearing (14) is seated in bearing (15) combined with lid (16) fitted to one leg of the U-shaped frame (10). The other end of the spool has a shaft stub (17) carrying in loose rotation fit the inertia disc (18) working in conjunction with catch (19) fitted with teeth (20) meshing with internal toothing (21) of wheel (22). The movements of the inertia disc are governed by spiral spring (22) with outer end connected to the inertia disc, the inner end connected to hub (24) of roller (25) on which rolling spring (26) operates. The operational length of the spring is coiled on storage roll (27).