Patent ID: 7350735

Claim:
A seat belt retractor comprising: a spool for retracting a seat belt; a locking mechanism including a locking member of which rotation in a belt-withdrawing direction is prevented in an emergency; and first and second seat belt load limiting mechanisms for limiting a load to be exerted on the seat belt when rotation of the locking member in the belt-withdrawing direction is prevented with the spool rotating relative to the locking member in the belt-withdrawing direction, wherein the second seat belt load limiting mechanism comprises: a load limit setting mechanism to set a load limit for the seat belt, wherein the load limit setting mechanism is configured to nip the seat belt against a belt recieving portion located in a main body of the load limit setting mechanism; and a load limit control mechanism to control the load limit setting mechanism to change a load limit of the seat belt in an emergency based on an emergency situation, and wherein the load limit setting mechanism is configured to be reused.