Title:
VALVE TIMING ADJUSTMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/172263
Kind Code:
A1
Abstract:
A valve timing adjustment device (100a-100f) is equipped with: a hydraulic fluid control valve (10), which has a tubular outer sleeve (30a-30f) having on the outer circumference thereof a protruding part (35a-35f), an inner sleeve (40) arranged inside the outer sleeve, and a spool (50) that moves forward and backward inside the inner sleeve along a rotational axis AX of the outer sleeve; an actuator (160) for controlling the forward and backward movement of the spool; and a vane rotor (130, 130f), which changes the rotation phase of a driven shaft relative to a drive shaft in accordance with the hydraulic pressure of a hydraulic fluid supplied from the hydraulic fluid control valve. A reference shape section (35ac-35fc), which serves as a reference when positioning relative to the inner sleeve is carried out, is provided at the outer periphery of the protruding part. A seating surface (35az-35fz) of the protruding part, which secures the vane rotor between an end portion 321 of the driven shaft or the drive shaft and the seating surface, has a rotationally symmetrical shape relative to the rotational axis.
Inventors:
KOKUMAI HIKARU (JP)
KAWAMURA FUTOSHI (JP)
TAKAHASHI KINYA (JP)
KAWAMURA FUTOSHI (JP)
TAKAHASHI KINYA (JP)
Application Number:
PCT/JP2021/006593
Publication Date:
September 02, 2021
Filing Date:
February 22, 2021
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F01L1/356
Foreign References:
| JP2020024018A | 2020-02-13 | |||
| JP2019132209A | 2019-08-08 | |||
| JP2018178972A | 2018-11-15 |
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN MEISEI INTERNATIONAL PATENT FIRM (JP)
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