Title:
STRAIN WAVE GEAR UNIT, GEAR TRANSMISSION DEVICE, AND VALVE TIMING CHANGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/217562
Kind Code:
A1
Abstract:
This strain wave gear unit includes: a bottomed cylindrical first internal gear (20) having internal teeth (23) formed on a cylindrical part (21) and a teeth-non-formed part (24) that protrudes farther inward than the tooth bottom of the internal teeth in a corner area (CA) where a bottom wall part (22) is integrally connected to the cylindrical part; a flexible cylindrical external gear (40) having external teeth (41) that mesh with the internal teeth of the first internal gear, an opposing part (43) opposing the teeth-non-formed part with a gap therebetween, and an end part (42a) opposing the bottom wall part so as to make contact therewith; a second internal gear (50) arranged adjacent to the first internal gear and having internal teeth (52) that mesh with the external teeth; and a rotation member (70) that causes the external gear to deform in an oval shape and causes the meshing position to move while partially meshing with the first internal gear and the second internal gear.
Inventors:
SANEKATA YUUHEI (JP)
Application Number:
PCT/JP2019/035432
Publication Date:
October 29, 2020
Filing Date:
September 10, 2019
Export Citation:
Assignee:
MIKUNI KOGYO KK (JP)
International Classes:
F01L1/356; F16H1/32
Foreign References:
| JP2018155313A | 2018-10-04 | |||
| JP2015102110A | 2015-06-04 | |||
| JP2016125343A | 2016-07-11 | |||
| DE102015017188A1 | 2017-04-06 | |||
| CN107387725A | 2017-11-24 |
Attorney, Agent or Firm:
YAMAMOTO Takatoshi (JP)
Download PDF: