Title:
TWO-SPEED SWITCHING VALVE FOR HYDRAULIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/171706
Kind Code:
A1
Abstract:
The inner peripheral surface of an accommodation hole (71) in which a spool (75) is accommodated is formed with: a first annular groove (81) connected to a first actuator port (51); a second annular groove (82) connected to a second actuator port (52); a third annular groove (83) connected to a first motor port (53); a fourth annular groove (84) connected to a second motor port (54); a fifth annular groove (85) connected to a first drain port (55); and a sixth annular groove (86) connected to a second drain port (56). The first annular groove (81) is located between the third annular groove (83) and the fifth annular groove (85). The second annular groove (82) is located between the fourth annular groove (84) and the sixth annular groove (86). With respect to the center O between the first annular groove (81) and the second annular groove (82), the third annular groove (83) and the fourth annular groove (84) are symmetrically located, and the fifth annular groove (85) and the sixth annular groove (86) are symmetrically located.
Inventors:
SUZUKI KENJI (JP)
SUZUKI JUN (JP)
SUZUKI JUN (JP)
Application Number:
PCT/JP2023/008790
Publication Date:
September 14, 2023
Filing Date:
March 08, 2023
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F16K11/07; F03C2/00
Foreign References:
| JP2011106606A | 2011-06-02 | |||
| JP2019060373A | 2019-04-18 | |||
| JP2006214561A | 2006-08-17 | |||
| JP2003028102A | 2003-01-29 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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