Title:
FLOW PASSAGE CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2024/004543
Kind Code:
A1
Abstract:
The present invention comprises: a spool valve 3 that is disposed inside a body 2 such that the spool valve can move in the axial direction, and that switches a communication state between an inlet port 7 and first and second outlet ports 8, 9 by moving in the axial direction; a communication hole 18 that has a main passage hole 20 formed in the interior axial direction of the spool valve, and that establishes communication between one end and another end in the axial direction of the spool valve; a drive unit 4 that biases the spool valve in one direction of the axial direction; a sensor unit 5 that detects a movement position of the spool valve; and a plug member 6 that is inserted and disposed in a lower end section of the main passage hole, and that has a bottom section 40c, which is contacted by a second rod 32c of the sensor unit, and a communication passage 43 that establishes communication between the inside and the outside of the communication hole. Due to the above configuration, the weight of the spool valve can be reduced, and good movement responsiveness can be ensured.
Inventors:
SOMA YUTA (JP)
JO YUKI (JP)
OIKAWA NAOKI (JP)
JO YUKI (JP)
OIKAWA NAOKI (JP)
Application Number:
PCT/JP2023/020910
Publication Date:
January 04, 2024
Filing Date:
June 06, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16K31/06; F16K37/00
Foreign References:
| JPS6091862U | 1985-06-22 | |||
| JP2020165479A | 2020-10-08 | |||
| JP2017089777A | 2017-05-25 | |||
| JP2014027026A | 2014-02-06 | |||
| JPS5030292B1 | 1975-09-30 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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