Title:
VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/054185
Kind Code:
A1
Abstract:
The present invention has: a large-diameter ball bearing 43 that is disposed between a sprocket body 1a and a fixed end section 9a of a driven member 9 to thereby bear a sprocket 1; an electric motor 8 that changes the relative rotational position of the driven member with respect to the sprocket; a speed reducing mechanism 11 that has a plurality of internal teeth 5a on the inner circumference of an internal tooth configuration part 5, and that reduces the rotation speed of a motor output shaft 13 and transmits the rotation to the driven member; and gear parts 1b provided integrally with the outer circumference of the sprocket body and disposed to be offset toward the internal teeth side. The gear parts are disposed so as to radially overlap a needle bearing 38 and a medium-diameter ball bearing 47, and the internal teeth and a roller 48. Accordingly, the generation of noise of the speed reducing mechanism can be suppressed during operation.
Inventors:
TADOKORO RYO (JP)
DOI ISAO (JP)
YAMADA YOSHIHIKO (JP)
DOI ISAO (JP)
YAMADA YOSHIHIKO (JP)
Application Number:
PCT/JP2018/032054
Publication Date:
March 21, 2019
Filing Date:
August 30, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F01L1/352; F16H1/32; H02K7/116
Foreign References:
| JPH11280423A | 1999-10-12 | |||
| JP2017008837A | 2017-01-12 | |||
| US20150133256A1 | 2015-05-14 | |||
| US20130081587A1 | 2013-04-04 | |||
| JP2015132178A | 2015-07-23 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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