Patent ID: 8469302

Claim:
A seat belt retractor including a holder sensor assembled on a frame, a gear that locks a rotating sensor lever assembled on a spool, a sensor bracket in which a sensor ball is housed, having a slope in the form of a conical shape that maintains a fitting angle of the retractor parallel with a vehicle's dynamics, a bracket holder that is assembled by the sensor bracket and a detection sensor for detecting the vehicle's dynamic slope and rapid acceleration/deceleration, the seat belt retractor comprising: a first cylinder locked with a fastening part of the bracket holder; a second cylinder that defines a locking angle for the bracket holder in the sensor bracket; and a first hole and a second set of holes linking the first and second cylinders of the sensor bracket in the bracket holder, which maintain the detection sensor built in the seat belt retractor horizontal to the vehicle based on which of the second set of holes links the second cylinder of the sensor bracket in the bracket holder.