Patent ID: 11971112
Assignee: CKD CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An electromagnetic valve manifold, comprising:
an electromagnetic valve including a discharge port;
a manifold base including a placement surface on which the electromagnetic valve is placed and a discharge passage that is open in the placement surface and is connected to the discharge port; and
a check valve that permits fluid to flow from the discharge port to the discharge passage and prevents fluid from flowing from the discharge passage to the discharge port, wherein
the check valve includes:
a valve member;
a valve housing including a valve seat on which the valve member is seated; and
an urging member that urges the valve member toward the valve seat,

the valve housing includes:
a valve chamber that accommodates the valve member;
a peripheral wall that defines the valve chamber;
a valve hole that connects the valve chamber to the discharge port; and
a discharge opening that connects the valve chamber to the discharge passage,

the valve seat is part of the valve housing and is an annular portion around an opening of the valve hole that opens to the valve chamber, the valve seat protruding into the valve chamber,
the valve member is configured to move toward and away from the valve seat by reciprocating in the valve chamber in an axial direction of the peripheral wall,
the check valve is disposed in the discharge passage,
the discharge opening is formed in the peripheral wall so as to at least partially overlap with the valve seat in a direction orthogonal to a moving direction of the valve member, or extend, in the moving direction of the valve member, over at least a moving range of a surface of the valve member in contact with the valve seat,
the discharge passage includes:
a first passage extending from the placement surface toward a surface of the manifold base opposite to the placement surface, the first passage including a first end portion opening in the placement surface and a second end portion opposite to the first end portion; and
a second passage connected to the second end portion of the first passage and extending in a direction intersecting with an extending direction of the first passage

an axial direction of the peripheral wall agrees with the extending direction of the first passage,
at least a portion of the peripheral wall in which the discharge opening is formed protrudes from the first passage to the second passage, and
the discharge opening is connected to the second passage in a state in which an axial direction of the discharge opening agrees with an extending direction of the second passage.