The function of the retractor is to store the webbing and lock the webbing to be pulled out. It is the most complicated mechanical part of the safety belt.
Inside the retractor is a ratchet mechanism. Under normal circumstances, the occupants can pull the webbing freely and uniformly on the seat. However, once the webbing is continuously pulled out from the retractor, the ratchet mechanism will work once it stops or when the vehicle encounters an emergency. The locking action automatically locks the webbing and prevents the webbing from being pulled out. The mounting fixtures are lugs, plug-ins, bolts, etc. connected to the vehicle body or seat components. Their installation position and firmness directly affect the protection effect of the seat belt and the comfort of the occupants.
