Title:
摩擦ローラ式減速機
Document Type and Number:
Japanese Patent JP6702310
Kind Code:
B2
Abstract:
A friction roller-type reduction gear comprising a sun roller arranged concentrically with an input shaft, a ring roller arranged concentrically with the sun roller at an outer periphery-side of the sun roller, a plurality of intermediate rollers supported to be rotatable about a rotation shaft parallel with the input shaft between an outer peripheral surface of the sun roller and an inner peripheral surface of the ring roller and configured to be in rolling contact with the outer peripheral surface of the sun roller and the inner peripheral surface of the ring roller, a coupling part configured to couple the ring roller and an output shaft, and a loading cam mechanism configured to change a contact surface pressure of a rolling contact surface of each roller, wherein the ring roller includes a pair of roller elements provided in parallel in an axial direction of the input shaft, wherein at least one of the pair of roller elements is a moveable roller element configured to be moveable axially, wherein the loading cam mechanism is arranged at only an outer end face-side of the moveable roller element in the axial direction and is configured to displace the moveable roller element towards the other roller element in correspondence to rotation torque of the input shaft, wherein the outer peripheral surface of the sun roller is a concave curved surface of which a shape of an outer edge in an axial cross-section is a concave curve, and wherein an outer peripheral surface of the intermediate roller is a convex curved surface of which a shape of an outer edge in an axial cross-section is a convex curve.
More Like This:
| JPH0637221 | [Name of invention] Rotational friction drive device |
| WO/2016/043178 | POWER TRANSMISSION ROLLER |
Inventors:
Hiroshi Kawahara
Hiroyasu Yoshioka
Toru Takehara
Yuji Shimomura
Hiroyasu Yoshioka
Toru Takehara
Yuji Shimomura
Application Number:
JP2017509388A
Publication Date:
June 03, 2020
Filing Date:
February 24, 2016
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
F16H13/04; F16H13/10
Domestic Patent References:
| JP2014196825A | ||||
| JP2014040892A |
Foreign References:
| WO2013174740A1 |
Attorney, Agent or Firm:
Patent business corporation glory patent office