Title:
VALVE-TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2015/137323
Kind Code:
A1
Abstract:
The present invention is equipped with: inner teeth (19a), a plurality of which are formed in the inner circumference of a tubular inner tooth structure (19) integrally included in a sprocket; an outer ring (47b) of a ball bearing (47), the inner ring of which is press-fitted to an eccentric shaft; a plurality of rollers (48) that are rotatably provided between each inner tooth and the outer ring at approximately equal intervals in the circumferential direction; and a plurality of roller retaining holes (41b) that are provided to a retaining apparatus (41), which is integrally included in a driven member, and restrict the circumferential direction movement of each roller whilst allowing the radial direction movement of the same. The backlash (B), which is the movement in the circumferential direction that a roller is able to make within each roller retaining hole, is formed to be an angle of 0.01-0.4° from a center line (P), which is extended in the radial direction from a rotation axis center (X) of a motor output shaft (13), towards the circumferential direction. Thus, a knocking sound can be effectively suppressed, and a decline in operational responsiveness can be suppressed.
Inventors:
YAMANAKA ATSUSHI (JP)
DOI ISAO (JP)
TSURUTA SEIJI (JP)
DOI ISAO (JP)
TSURUTA SEIJI (JP)
Application Number:
PCT/JP2015/056973
Publication Date:
September 17, 2015
Filing Date:
March 10, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F01L1/344; F01L9/20
Domestic Patent References:
| WO2014010550A1 | 2014-01-16 |
Foreign References:
| JP2011231700A | 2011-11-17 | |||
| JPH05296300A | 1993-11-09 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
Hiromichi Kobayashi (JP)
Hiromichi Kobayashi (JP)
Download PDF: