Pretensioner

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 22/46 (2006.01)

Patent

CA 2367374

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.

L'invention concerne un dispositif de mise en tension pouvant réduire la taille d'un appareil complet. Un dispositif de mise en tension de type à crémaillère est installé sur le côté extérieur d'une deuxième plaque de pied (18) d'un enrouleur à sangle (10). Le mécanisme d'entraînement du dispositif de mise en tension comprend, comme éléments principaux, un piston (116) construit comme une barre de crémaillère, et un pignon (102). Le pignon (102), qui inclut une partie dentée (104) et une partie embrayage (106), est directement relié à un arbre d'enroulement. Ainsi, par comparaison avec une construction dans laquelle un pignon intermédiaire est interposé entre le pignon (102) et la barre de crémaillère, la taille du dispositif de mise en tension complet peut être réduite radialement et axialement.

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Profile ID: LFCA-PAI-O-1982932

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