To provide a configuration which can suppress occurrence of allophone due to screw shaft runout.SOLUTION: The seat rail device is provided with an oil-impregnated bush 80a, which pivotally supports a rear side end 41 of a screw 40 and where an outer peripheral surface 82a excluding an end face 83a on an axial direction one side and an end face 84a on an axial direction other side is formed into a spherical surface shape, and a rear side bracket 70a and a spring 90a, which support the oil-impregnated bush 80a and in which an insertion port 73a and an insertion port 94a through which the screw 40 pivotally supported by the oil-impregnated bush 80a is inserted are formed. The rear side bracket 70a and the spring 90a have inner surfaces which constitute a space which is connected to the insertion port 73a and the insertion port 94a and accommodates at least a part of the oil-impregnated bush 80a, and are formed into a concaved spherical surface shape so as to be brought into surface contact with the spherical surface-shaped outer peripheral surface 82a.SELECTED DRAWING: Figure 3
【課題】スクリューネジの軸振れに起因する異音の発生を抑制し得る構成を提供する。【解決手段】スクリューネジ40の後側端部41を軸支し、軸方向一側の端面83a及び軸方向他側の端面84aを除く外周面82aが球面状に形成される含油ブッシュ80aと、含油ブッシュ80aを支持し、含油ブッシュ80aにより軸支されたスクリューネジ40が挿通する挿通口73a及び挿入口94aが形成される後側ブラケット70a及びスプリング90aと、が設けられる。そして、後側ブラケット70a及びスプリング90aは、挿通口73aと挿入口94aとに連結し含油ブッシュ80aの少なくとも一部を収容するための空間を構成する内面が、球面状の外周面82aに面接触するように凹球面状に形成される。【選択図】図3
SEAT RAIL DEVICE
シートレール装置
2021-06-24
Patent
Elektronische Ressource
Japanisch
IPC: | B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet |