Multi-control valve device

Patent metadata

Field	Value
Publication number	US-11828305-B2
Application number	US-202017756898-A
Country	US
Kind code	B2
Filing date	Oct 16, 2020
Priority date	Dec 6, 2019
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

A multi-control valve device includes: a valve block including a plurality of valve holes; a plurality of spools movably housed in the plurality of valve holes in a one-to-one correspondence; one or more attachment parts provided on the valve block; and a plurality of solenoid valves provided on the one or more attachment parts in a one-to-one correspondence with the plurality of spools and each of which reduces a primary pressure, outputs a secondary pressure to a corresponding one of the plurality of spools, and moves the spool. The valve block includes a primary pressure supply passage through which the primary pressure is supplied to each of the plurality of solenoid valves.

First claim

The invention claimed is:

1. A multi-control valve device comprising:
a valve block including a plurality of valve holes;
a plurality of spools movably housed in the plurality of valve holes in a one-to-one correspondence;
one or more attachment parts provided on the valve block;
a plurality of spring mechanisms each of which is housed in a corresponding one of the one or more attachment parts and returns a corresponding one of the plurality of spools to a neutral position; and
a plurality of solenoid valves each provided on the corresponding one of the one or more attachment parts in a one-to-one correspondence with the plurality of spools and each of which reduces a primary pressure, outputs a secondary pressure to a corresponding one of the plurality of spools, and moves the spool, wherein:
the valve block includes a primary pressure supply passage through which the primary pressure is supplied to each of the plurality of solenoid valves.

2. The multi-control valve device according to claim 1 , wherein:
the plurality of valve holes are aligned in a predetermined direction in the valve block;
the primary pressure supply passage extends in the predetermined direction; and
the valve block is formed to be separable into a plurality of sub-blocks in the predetermined direction.

3. The multi-control valve device according to claim 1 , wherein:
the plurality of solenoid valves include drain ports from each of which the primary pressure is discharged;
the valve block includes a drain communicating part connected to each of the drain ports; and
the drain communicating part includes a plurality of individual passages individually connected to the drain ports in a one-to-one correspondence and a shared part connected to the plurality of individual passages.

4. The multi-control valve device according to claim 3 , wherein:
the plurality of valve holes are aligned in a predetermined direction in the valve block;
the primary pressure supply passage includes a main passage extending in the predetermined direction;
the valve block is formed to be separable into a plurality of sub-blocks in the predetermined direction; and
the shared part is a space extending in a plane and is formed outside the main passage in the valve block.

5. The multi-control valve device according to claim 1 , wherein:
each of the plurality of solenoid valves includes a secondary port from which the secondary pressure is output;
each of the plurality of spools moves by receiving the secondary pressure guided into a pressure-receiving chamber; and
each of the one or more attachment parts forms the pressure-receiving chamber and includes a secondary-side passage connecting the pressure-receiving chamber and the secondary port.

6. The multi-control valve device according to claim 5 , wherein:
each of the plurality of solenoid valves includes a primary port to which the primary pressure is supplied and a drain port from which the primary pressure is discharged;
each of the one or more attachment parts further includes a primary-side passage connecting the primary port and the primary pressure supply passage and a drain passage connected to the drain port; and
the primary-side passage, the second-side passage, and the drain passage are disposed with spacing therebetween around an axial line of a corresponding one of the plurality of solenoid valves.

7. The multi-control valve device according to claim 1 , wherein:
the one or more attachment parts are a plurality of attachment parts provided to individually attach the plurality of solenoid valves to the valve block;
each of the plurality of solenoid valves includes a primary port to which the primary pressure is supplied; and
in each of the plurality of attachment parts, a primary-side passage connecting the primary port and the primary pressure supply passage is formed.

Assignees

• Kawasaki Heavy Ind Ltd

Inventors

• Aoki Seiji
• Tode Yoshiyuki
• Yamasaki Koji

Classifications

• F15B13/0842 Primary

  Monoblock type valves, e.g. with multiple valve spools in a common housing · CPC title

• F15B13/0821

  Attachment or sealing of modular units to each other · CPC title

• F15B13/0871

  Channels for fluid · CPC title

• E02F9/2267

  Valves or distributors (position of valves arrangements on upper-structures E02F9/0875) · CPC title

• F15B13/0433

  the pilot valves being pressure control valves (F15B13/0435, F15B13/0436, F15B13/0438 take precedence) · CPC title