howseatbeltswork安全帶工作原理(存儲(chǔ)版)
【正文】 rear of the car that collapse relatively easily ? Car seatbelts have the ability to extend and retract ? You can lean forward easily, belt stays fairly taut ? In a collision, belt tightens up and holds you in place Seat Belt Retractors ? Retractor mechanism A spiraled spring rotates the spool to keep the seatbelt webbing taut Retractor has a locking mechanism Two types of locking mechanisms: 1) Systems triggered by the car’s movement 2) Systems triggered by the belt’s movement Weighted pendulum triggered by car movement ? When the car es to a sudden stop the inertia causes the pend
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