To allow a seat belt retractor to be easily assembled and to be made compact while effectively operating a pretensioner and an energy absorbing mechanism. A plurality of balls 20 rotate a ring gear 25 by gas generated in the event of an emergency. Since in...

In a first cup 2, a second cup 12 of an ignitor 4 is inserted in an engaged state, a sealing member 19 is disposed between an end 2c of the first cup 2 and the ignitor 4, and the end 2c and the ignitor 4 are fixed by co-fastening due to crimping a holder 5...

The invention relates to a drive for a seat belt retractor for safety belts with a drive chamber formed by two parallel plates connected to one another, and with a drive belt (20) whose both ends are fastened to a drive shaft (10) in such a manner that the...

In order to provide a seat belt retractor which achieves a more stable performance of a pretensioner, a seat belt retractor has a spool (2) for winding up a belt (S) thereon. The spool (2) has a shaft portion (2A), a spool gear (2B), and a spring-biased sh...

In order to provide a pretensioner which achieves more stable operation and reduction in power loss of the pretensioner, a pretensioner (10) is provided in which a gas release hole (11X) is formed in a surface of a lower portion of a straight part (11B) of...