Title:
VARIABLE PHASE DEVICE FOR VEHICULAR ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/183149
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a variable phase device having a short axial length, capable of achieving fine variable phase adjustment, and exhibiting excellent responsiveness. The device is for changing phase between a driving-side outer cylinder section and a driven-side inner cylinder section that are coaxially arranged with each other. The device is a variable phase device that utilizes either: an electromagnetic brake driving system equipped with an intermediate member (30) engaged via helical splines with the inner/outer cylinder sections, a return spring supported on the inner cylinder section in such a manner as to return a rotary drum (44) engaged via a thread with the intermediate member (30) to an initial position thereof, and an electromagnetic clutch (40) for applying a braking force to a rotary drum (44); or a hydraulic driving system equipped with a return spring for returning an integrated vane rotor (210) with the inner cylinder section to an initial position thereof and a pump (P) for supplying a working fluid to hydraulic chambers (116a, 116b) partitioned by the vane rotor (210). The return spring consists of a spiral coil spring in which spiral spring parts (81, 85) are integrated together while being arranged parallel to each other in an axial direction.
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Inventors:
NIIRO MASAAKI (JP)
Application Number:
PCT/JP2016/062606
Publication Date:
October 26, 2017
Filing Date:
April 21, 2016
Export Citation:
Assignee:
NITTAN VALVA (JP)
International Classes:
F01L1/34; F01L1/352; F01L1/356
Foreign References:
| US20090235884A1 | 2009-09-24 | |||
| US20090211549A1 | 2009-08-27 | |||
| JP2001107712A | 2001-04-17 |
Attorney, Agent or Firm:
YAGI Hidehito et al. (JP)
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