PROBLEM TO BE SOLVED: To provide a pretensioner which achieves reduction of the number of components and manufacturing costs while maintaining comfort, and to provide a retractor and a seat belt device.SOLUTION: A pretensioner 3 comprises: a ring gear 31 connected to a spool 2; a power transmission member 32 which transmits power to the ring gear 31 in emergency; a pipe 33 which houses the power transmission member 32; a gas generator 34 which is disposed in the pipe 33 and applies power to the power transmission member 32; and a gas seal material 35 disposed between the power transmission member 32 and the gas generator 34. The gas seal material 35 includes: a head 35a which is stored contacting with the power transmission member 32 and deformed; a leg 35c which forms a gas generation space V with the gas generator 34; and a trunk part which connects the head 35a with the leg 35c.SELECTED DRAWING: Figure 1
【課題】快適性を維持しつつ、部品点数及び製造コストの削減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に接続されたリングギア31と、緊急時にリングギア31に動力を伝達する動力伝達部材32と、動力伝達部材32を収容するパイプ33と、パイプ33に配置され動力伝達部材32に動力を付与するガス発生器34と、動力伝達部材32とガス発生器34との間に配置されたガスシール材35と、を備え、ガスシール材35は、動力伝達部材32に接触して変形した状態で収容される頭部35aと、ガス発生器34との間でガス発生空間Vを形成する脚部35cと、頭部35a及び脚部35cを接続する胴部と、を備えている。【選択図】図1
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
2016-12-22
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |