| 摘要 |
<p>A safety belt retractor comprises a belt winding shaft (40) including a cylindrical projecting portion (44) projected from its one end surface, a torsion bar (50) coupled at one end (52) to the end surface of the belt winding shaft and at the other end (54) to a skid mechanism integrated with a sprocket (74), which is accommodated in the belt winding shaft and the skid mechanism for restraining the torque of the torsion bar, in which the cylindrical projecting portion includes a stopper (44a) for determining the rotation of the torsion bar, the skid mechanism includes a skip member (60), which is provided with a latching portion (64) contacting with the stopper for determining the right and leftward thereof and a skid element for controlling the torque of the torsion bar, and a skid structure (70) provided with a boss (78) coupled to enable the other end of the torsion bar to be inserted thereinto and a guide groove (76) formed around the periphery of the boss on the bottom surface thereof, in which at least two pairs of blocking elements (77) are provided, thereby to control the amount of torque of the belt winding shaft. <IMAGE></p> |
