PROBLEM TO BE SOLVED: To provide a pretensioner which achieves weight reduction of the device by improving slidability of a power transmission member used in the pretensioner, and to provide a retractor and a seat belt device.SOLUTION: A pretensioner 3 includes: a driving wheel 4 which rotates a spool 2; and power transmission means 5 which transmits power to the driving wheel 4 during an emergency. The power transmission means 5 includes: a power transmission member 51 which rotates the driving wheel 4; a pipe 52 which houses the power transmission member 51; a gas generator 53 which supplies an operative gas to the interior of the pipe 52; and a housing 54 forming a passage 54a of the power transmission member 51 at an outer periphery of the driving wheel 4. The housing 54 has a slide member 541 which is disposed at an outlet part of the pipe 52 and reduces a frictional force occurring between the housing 54 and the power transmission member 51.SELECTED DRAWING: Figure 2
【課題】プリテンショナに用いられる動力伝達部材の摺動性を向上することによって装置の軽量化を図ることができる、プリテンショナ、リトラクタ及びシートベルト装置を提供する。【解決手段】プリテンショナ3は、スプール2を回転させる駆動輪4と、緊急時に駆動輪4に動力を伝達する動力伝達手段5と、を備え、動力伝達手段5は、駆動輪4を回転させる動力伝達部材51と、動力伝達部材51を収容するパイプ52と、パイプ52内に作動ガスを供給するガス発生器53と、駆動輪4の外周に動力伝達部材51の通路54aを形成するハウジング54と、を備え、ハウジング54は、パイプ52の出口部に配置され動力伝達部材51との摩擦力を低減する滑動部材541を有している。【選択図】図2
PRETENSIONER, RETRACTOR, AND SEAT BELT DEVICE
プリテンショナ、リトラクタ及びシートベルト装置
2017-09-14
Patent
Elektronische Ressource
Japanisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Pretensioner, seat belt retractor, and seat belt device
Europäisches Patentamt | 2016
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