Invention Grant
- Patent Title: Single-cavity toroidal continuously variable transmission
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Application No.: US15028065Application Date: 2014-04-02
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Publication No.: US10247284B2Publication Date: 2019-04-02
- Inventor: Hirotaka Kishida , Junji Ono
- Applicant: NSK LTD.
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2013-212418 20131010
- International Application: PCT/JP2014/059728 WO 20140402
- International Announcement: WO2015/052950 WO 20150416
- Main IPC: F16H15/38
- IPC: F16H15/38 ; F16H61/664

Abstract:
A single-cavity toroidal continuously variable transmission capable of suppressing gyro slippage and achieving mitigation of bearing loss and a longer service life. A pitch circle diameter (PCD) of the output-side bearing is smaller than that of the input-side bearing and a ball diameter of the output-side bearing is smaller than that of the input-side bearing. Therefore, centrifugal force acting on the ball of the output-side bearing on a speed increasing side with a low load can be suppressed. Therefore, gyro slippage can be suppressed and mitigation of bearing loss can be achieved. Furthermore, with a groove R ratio of the output-side bearing smaller than that of the input-side bearing, a longer service life can be achieved even when the pitch circle diameter (PCD) and ball diameter of the output-side bearing are smaller than those of the input-side bearing.
Public/Granted literature
- US20160238112A1 SINGLE-CAVITY TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION Public/Granted day:2016-08-18
Information query
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