Inertia operated seat-belt locking mechanism - has catch pushed against spring and into engagement with ratchet by sliding pin controlled by pendulum

摘要

The seat belt webbing is coiled on a spool rotating on an axle (25) and fitted on one end with a ratchet wheel (35). A catch (34) snaps into engagement with the ratchet if pushed against the force of spring (36). The catch is pushed into engagement with the ratchet by the sliding motion of pin (51) operating in a guide bushing (48). The sliding motion is induced by the tilting movement of disc-shaped head (45) of a pendulum (41) when the vehicle is subjected to sudden deceleration or acceleration.