发明授权
- 专利标题: Toroidal type continuously variable transmission
- 专利标题(中): 环形无级变速器
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申请号: US09329219申请日: 1999-06-10
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公开(公告)号: US06251041B1公开(公告)日: 2001-06-26
- 发明人: Kouji Ishikawa , Seiji Higuchi , Nobuo Goto , Takashi Imanishi
- 申请人: Kouji Ishikawa , Seiji Higuchi , Nobuo Goto , Takashi Imanishi
- 优先权: JP10-163633 19980611
- 主分类号: F16H1538
- IPC分类号: F16H1538
摘要:
The toroidal type continuously variable transmission includes: first and second disks concentrically disposed on each other and supported such that they can be rotated freely; a pair of trunnions; a pair of displacement shafts respectively including support shaft portions and pivot shaft portions; a plurality of power rollers interposed between and held by the first and second disks; a plurality of thrust ball bearings respectively for supporting their associated power rollers; and, a plurality of thrust needle bearings respectively interposed between the outer surfaces of outer rings respectively forming the thrust ball bearings and the inner surfaces of the trunnions. A retainer for retaining the thrust needle roller in a freely rollable manner is formed of a single plate, and is carbonitrided, while the surface hardness Hv of the retainer is set higher than or equal to 550.