LOAD LIMITER RETRACTOR OPERATION

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1.  Initial state

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2.  If shock is applied to the belt, rotation of the retraction shaft is stopped and the retractor is in the ELR condition. Under the ELR condition, the belt locks to secure the passenger’s body.

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3.  Depending on the increase in weight applied to the belt under the ELR condition, the drum takes in rotation force in the direction that the belt webbing is being fed out.

4.  If the weight applied to the belt exceeds the specified value, the drum begins to rotate, the torsion bar twists, and the wire transfers to the guide drum. As a result, belt webbing is fed out, and the restraining force of the belt loosens. (Load limiter conditioner)

5.  If the drum rotates beyond a certain level (belt webbing has been fed out), the wire pulls out from the guide drum. If the weight applied to the belt increases further above the specified value, the load limiter condition is maintained by the torsion bar.

6.  When the load applied to the belt decreases below the specified level of the torsion bar, the load limiter condition is canceled.

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