JP2000193057A5

JP2000193057A5 -

Info

Publication number: JP2000193057A5
Application number: JP1998372342A
Authority: JP
Filing date: 1998-12-28
Publication date: 2005-07-21
Anticipated expiration: 2018-12-28

Description

又、上記外輪３１に形成した外輪軌道３７よりも内径側部分の４個所で円周方向等間隔位置に、上記外輪３１の両面同士を連通させる給油孔３８、３８を、この外輪３１の中心軸に対し平行に設けている。そして、これら４本の給油孔３８、３８のうちの２本の給油孔３８、３８を、上記トラニオン６の長さ方向に配置している。又、上記スラスト玉軸受２９を構成する保持器３９の両面には給油溝４０、４０を形成している。 Further, refueling holes 38, 38 that allow both sides of the outer ring 31 to communicate with each other at four positions on the inner diameter side of the outer ring 31 formed at the outer ring 31 at equal intervals in the circumferential direction are provided as the central axis of the outer ring 31. It is provided parallel to. Then, two of the four lubrication holes 38, 38 are arranged in the length direction of the trunnion 6. Further, oil supply grooves 40, 40 are formed on both surfaces of the cage 39 constituting the thrust ball bearing 29.

トロイダル型無段変速機の運転時、駆動ロッド３２（図１１）及びトラニオン６の内部に設けた給油通路４１を通じて供給され、上記トラニオン６の中間部内側面に吐出した潤滑油は、上記変位軸７の枢支軸部２６内に設けた第二の給油通路４２を通じて上記スラスト玉軸受２９の内径側及びラジアルニードル軸受２８部分に供給する他、上記各給油孔３８、３８及び給油溝４０、４０を介して、上記スラスト玉軸受２９を構成する玉４３、４３の転動面と、上記外輪軌道３７及びパワーローラ８の内端面に形成した内輪軌道４４との当接部に送り込まれる。 When the toroidal stepless transmission is in operation, the lubricating oil supplied through the drive rod 32 (FIG. 11) and the oil supply passage 41 provided inside the trunnion 6 and discharged to the inner surface of the intermediate portion of the trunnion 6 is the displacement shaft 7. In addition to supplying the inner diameter side of the thrust ball bearing 29 and the radial needle bearing 28 portion through the second lubrication passage 42 provided in the pivot shaft portion 26 of the above, the lubrication holes 38, 38 and the lubrication grooves 40, 40 are provided. Through, the rolling surface of the balls 43, 43 constituting the thrust ball bearing 29 is sent to the contact portion between the outer ring track 37 and the inner ring track 44 formed on the inner end surface of the power roller 8.