To eliminate influence of a seal member on a leak test performed by filling with gas.SOLUTION: A seal member 90 for sealing between an outer peripheral surface of a steering shaft 11 and an inner peripheral surface of an accommodation part 81 in which the steering shaft 11 is accommodated, comprises an annular body part 91 provided between the outer peripheral surface of the steering shaft 11 and the inner peripheral surface of the accommodation part 81, and a filter 99 that is permeable to gas but not to liquid. The body part 91 is provided with a ventilation part 97 that penetrates the body part 91 in an axial direction. The filter 99 is provided in the ventilation part 97.SELECTED DRAWING: Figure 5
【課題】気体を充填して行うリークテストへのシール部材の影響をなくす。【解決手段】ステアリングシャフト11の外周面とステアリングシャフト11が収容される収容部81の内周面との間をシールするシール部材90は、ステアリングシャフト11の外周面と収容部81の内周面との間に設けられる環状の本体部91と、気体を透過するとともに液体を透過しないフィルタ99と、を備え、本体部91には、本体部91を軸方向に貫通する通気部97が形成され、フィルタ99は、通気部97に設けられる。【選択図】図5
SEAL MEMBER
シール部材
2025-02-07
Patent
Electronic Resource
Japanese