Title:
VALVE OPENING/CLOSING TIMING CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2019044628
Kind Code:
A
Abstract:
To constitute a valve opening/closing timing control device which can finely adjust fluid without causing the elongation of a spool of a control valve.SOLUTION: A control valve 50 comprises a plunger 53a for increasing a protrusion amount accompanied by an increase of power supplied to an electromagnetic solenoid 53, a first spool 51 for controlling the supply and discharge of fluid with respect to a lock member 41, a compressor-coil type first spring 51S, a second spool 52 for controlling the supply and discharge of the fluid with respect to a fluid pressure chamber C, and a compressor-coil type second spring 52S, along a spool axial core in this order. In a situation that a spring constant of the first spring 51S is set smaller than a spring constant of the second spring 52S, and power is not supplied to the electromagnetic solenoid 53, the first spool 51 maintains the lock member 41 at a lock position.SELECTED DRAWING: Figure 4
Inventors:
KANEDA YOJI
HAYASHI JUNKI
HAYASHI JUNKI
Application Number:
JP2017165984A
Publication Date:
March 22, 2019
Filing Date:
August 30, 2017
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F01L1/356
Attorney, Agent or Firm:
Patent business corporation r&c