Valve

Patent metadata

Field	Value
Publication number	US-12196464-B2
Application number	US-202118017824-A
Country	US
Kind code	B2
Filing date	Jul 27, 2021
Priority date	Aug 3, 2020
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

To provide a valve capable of suppressing contamination from being caught between a fixed iron core and a rod. The valve includes: a valve housing; a valve body; a valve seat having the valve body seated thereon; a drive source for driving the valve body by a rod; and an urging member for urging the valve body in a direction opposite to a driving direction of the drive source. One of the valve body and the rod includes a guide concave portion which guides remaining one of the valve body and the rod in a relative fitting direction.

First claim

The invention claimed is:

1. A valve, comprising:
a valve housing;
a rod configured to be movable inside the valve housing;
a valve body having a first end portion which is engaged with an axial end of the rod, a second end portion which is opposed to the first end portion in an axial direction and pivotably supported, and no sliding surface between the first end portion and the second end portion;
a valve seat configured to have the valve body seated thereon;
a cylindrical member having an insertion hole through which the rod is inserted;
a drive source configured to drive the valve body through the rod; and
an urging member configured to urge the valve body in a direction opposite to a driving direction of the drive source,
wherein
a gap is formed between an outer peripheral surface of the rod and an inner surface of the cylindrical member throughout an entire circumference, and
one of the valve body and the rod includes a guide concave portion configured to guide remaining one of the valve body and the rod in a relative fitting direction in which the valve body and the rod are fitted to each other.

2. The valve according to claim 1 ,
wherein the guide concave portion includes an inclined surface.

3. The valve according to claim 2 , further comprising:
a spring configured to urge the rod toward the valve body.

4. The valve according to claim 1 ,
wherein the remaining one of the valve body and the rod includes a guided convex portion which is fitted to the guide concave portion.

5. The valve according to claim 4 ,
wherein each of the guide concave portion and the guided convex portion includes an inclined surface.

6. The valve according to claim 5 ,
wherein the inclined surface of the guide concave portion and the inclined surface of the guided convex portion are equal to each other in inclination angle with respect to an axial direction.

7. The valve according to claim 6 ,
wherein each of the guide concave portion and the guided convex portion includes a flat surface which is orthogonal to an axial direction.

8. The valve according to claim 6 , further comprising:
a spring configured to urge the rod toward the valve body.

9. The valve according to claim 5 ,
wherein each of the inclined surfaces of the guide concave portion and the guided convex portion is part of a spherical surface defined by one mutual curvature.

10. The valve according to claim 9 , further comprising:
a spring configured to urge the rod toward the valve body.

11. The valve according to claim 5 ,
wherein each of the guide concave portion and the guided convex portion includes a flat surface which is orthogonal to an axial direction.

12. The valve according to claim 5 , further comprising:
a spring configured to urge the rod toward the valve body.

13. The valve according to claim 4 ,
wherein each of the guide concave portion and the guided convex portion includes a flat surface which is orthogonal to an axial direction.

14. The valve according to claim 13 , further comprising:
a spring configured to urge the rod toward the valve body.

15. The valve according to claim 4 , further comprising:
a spring configured to urge the rod toward the valve body.

16. The valve according to claim 1 , further comprising:
a spring configured to urge the rod toward the valve body.

Assignees

• Eagle Ind Co Ltd

Inventors

• EJIMA Takahiro
• FURUKAWA Kenshiro
• Fukudome Kohei
• Shirafuji Keigo

Classifications

• F16K17/04

  spring-loaded · CPC title

• F16K1/36

  Valve members (for double-seat valves F16K1/44 {; for butterfly valves F16K1/222, F16K1/223}) · CPC title

• B60H1/00485

  Valves for air-conditioning devices, e.g. thermostatic valves · CPC title

• F25B41/345 Primary

  by solenoids · CPC title

• F25B2341/06

  Details of flow restrictors or expansion valves · CPC title