| 摘要 |
There is provided a pretensioner which can as a whole be made smaller. A rack and pinion type pretensioner is disposed outside a second leg plate 18 of a webbing take-up device 10. A driving mechanism of the pretensioner includes, as principal components, a piston 116 formed as a rack bar, and a pinion 102. The pinion 102 includes a toothed portion 104 and a clutch portion 106, and is directly connected to a winding shaft. Accordingly, as compared with a conventional system in which intermediate gears are disposed between the pinion 102 and the rack bar, the pretensioner can as a whole be made smaller both in radial and axial directions thereof. <IMAGE> |
