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Title:
WAVE GEAR SPEED REDUCER AND LINK MECHANISM ACTUATOR FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/044116
Kind Code:
A1
Abstract:
This wave gear speed reducer comprises: a rigid internal gear (27); a flexible external gear (36) arranged in the interior of the rigid internal gear (27); a wave generator (37) arranged in the interior of the flexible external gear (36); an input shaft (48) connected to a center portion of the wave generator (37); a plurality of elastic members (60a); and a plurality of spherical members (60b) each secured to one end of an elastic member (60a). The wave generator (37) and the input shaft (48) are provided with, along the circumferential direction, a plurality of recesses (48a, 371a) opening at the connection surface of the wave generator (37) and the input shaft (48). Each elastic member (60a) is arranged in a recess (48a) of the input shaft (48), and a spherical member (60b) is secured to the one end of the elastic member that is on the open side of the recess (48a). Each spherical member (60b) has a portion that protrudes into a recess (371a) of the wave generator (37).

Inventors:
SUZUKI Kenta (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
HENMI Makoto (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
IKEGUCHI Kenburaian (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
ONIGATA Junichiro (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2018/022613
Publication Date:
March 07, 2019
Filing Date:
June 13, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F16H1/32; F02B75/04; F02N15/02; F16D7/04; F16D7/06; F16D7/10; H02K7/116
Domestic Patent References:
WO2014027497A12014-02-20
WO2010142318A12010-12-16
Foreign References:
JPH11118003A1999-04-30
JPS60201143A1985-10-11
JP2016098866A2016-05-30
JP2004116581A2004-04-15
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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