A webbing take-up device includes a spool and a spiral spring that biases the spool in a take-up direction and a motor provided with an output shaft. The webbing take-up device further includes a first clutch that transmits forward direction rotation of th...

The belt pretensioner drive (30) has an electric motor (3), a spindle shaft (4) and a driven gear (21) coupled with a winding shaft (1). A worm gear (20) is provided, over which the driven gear is driven by the spindle shaft. A helical cut external toothin...

In the seat belt pretensioner device according to the present invention, because the buckle is pulled by urging an intermediate point of the cable, it is possible to pull the seat belt and buckle by a required stroke with a relatively small stroke of the p...