PROBLEM TO BE SOLVED: To provide a pretensioner which can increase the maximum winding quantity of webbing while inhibiting the size increase of the pretensioner, and to provide a retractor and a seat belt device.SOLUTION: A retractor includes: a spool which winds webbing for restraining an occupant; and a pretensioner 3 which winds the webbing to remove looseness during an emergency. The pretensioner 3 includes: a driving wheel 4 which is disposed so as to rotate the spool; and power transmission means which transmits power to the driving wheel 4 during the emergency. The power transmission means includes: a resin elongated object 51 which rotates the driving wheel 4; a pipe 52 which houses the resin elongated object 51; and a gas generator which supplies an operation gas to the interior of the pipe 52. The resin elongated object 51 discharged from the pipe 52 is configured to rotate the driving wheel 4 while maintaining a state that the resin elongated object 51 is wound around the driving wheel 4.SELECTED DRAWING: Figure 3
【課題】プリテンショナの大型化を抑制しつつウェビングの巻き取り最大量を増やすことができる、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】リトラクタは、乗員を拘束するウェビングの巻き取りを行うスプールと、緊急時にウェビングを巻き取って弛みを除去するプリテンショナ3と、を備え、プリテンショナ3は、スプールを回転可能に配置された駆動輪4と、緊急時に駆動輪4に動力を伝達する動力伝達手段と、を備え、動力伝達手段は、駆動輪4を回転させる樹脂製長尺物51と、樹脂製長尺物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と、を備え、パイプ52から排出された樹脂製長尺物51は、駆動輪4に巻き付いた状態を保持したまま駆動輪4を回転させるように構成されている。【選択図】図3
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
2018-02-15
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |