JP2571583Y2 - valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve, for example, used as a check valve, a pressure control valve or the like. And a valve that opens and closes the valve.

[0002]

2. Description of the Related Art Heretofore, there has been known a valve of this type in which a valve body 21 as shown in FIG. FIG. 4 shows the valve body 21 of the valve.
FIG. 4 is a view showing a state in which the valve body 21 is incorporated in a part of a housing 27. As shown in the figure, the valve body 21 has a spring support portion 23 for supporting a spring 26 on one surface of a metal fitting 22, The valve part 25 is attached to the other surface of the metal fitting 22. The valve part 25 closes a fluid passage (not shown) formed in the housing 27 by being incorporated into the recess 27 a of the housing 27. It is arranged so that.

[0003] In FIG. 4, a metal fitting 22 has a disk-shaped seat portion 22a, and a column-shaped spring support portion 23 is formed at the center of one surface.

[0004] A spring 26 is fitted on the spring support 23 of the metal fitting 22, and one end of the spring 26 abuts against a seat 22 a of the metal fitting 22. Here, a so-called compression coil spring is used as the spring 26, and the metal fitting 22 is biased upward in the drawing by the elastic force of the spring 26.

At this time, the spring 26 is supported by the spring support portion 23 of the metal fitting 22, thereby preventing the spring 26 from being deformed in the direction orthogonal to the axis, and stabilizing the biasing direction of the spring 26 with respect to the metal fitting 22. I have to.

A valve portion 25 is mounted on the other surface of the metal fitting 22 on which the spring support portion 23 is not formed. The valve portion 25 is made of, for example, an elastic body having good sealing properties, and is formed in a shape that closes a flow path (not shown) between the fluid inlet and the fluid outlet formed in the housing 27. You.

[0007] The valve body 21 assembled as described above is assembled into a recess 27 a formed at a predetermined location of the housing 27, so that the valve portion 25 forms a fluid flow passage in the housing 27. It will be located in the closed state.

At this time, the valve body 25 normally closes the flow passage in the housing 27 by the urging force of the spring 26, and the fluid on the inlet side is blocked by the valve part 25. I have.

Here, when the pressure of the fluid on the inflow side becomes larger than the urging force of the spring 26, the action of this pressure causes the valve body 21 to oppose the urging force of the spring 26, whereby the valve portion 25 flows. The passage is opened to allow the fluid to flow.

Next, when the pressure of the fluid on the inlet side becomes smaller than the urging force of the spring 26, the valve body 21 returns to the initial position due to the elasticity of the spring 26, whereby the valve portion 25 closes the flow passage. Therefore, the circulation of the fluid is prohibited.

However, in the valve element 21 of such a conventional valve, the spring 26 may fall off from the metal fitting 22 at the time of assembling or assembling into the housing 27.

That is, since the valve body 21 of the valve is not provided with any means for holding the spring 26, the valve body 21 has a vertical positional relationship as shown in FIG.
When assembling into the housing 27, the spring 26 may drop from the spring support 23 of the metal fitting 22 during the work.

In the case where the valve body 21 is assembled in a vertical positional relationship as shown in FIG.
The metal fitting 22 may fall off from the spring 26 in some cases.

FIG. 6 shows another conventional example. FIG. 6 is a view showing a state in which the valve element 31 of the valve is incorporated in a part of the housing 37. As shown in the figure, the valve element 31 has a spring 32 for supporting the spring 36 on the metal fitting 32 from outside. A support portion 33 is formed, and a valve portion 35 is provided outside the metal fitting 32.
The valve body 31 is assembled into the recess 37a of the housing 37 so that the valve portion 35
7 so as to close a fluid passage (not shown) formed in the fluid.

In FIG. 6, a metal fitting 32 is configured such that a spring supporting portion 33 is provided upright on an outer peripheral portion of a disc-shaped seat portion 32a so that a concave portion is formed inside the spring supporting portion 33. is there.

A spring 36 is inserted into the recess of the metal fitting 32, and one end of the spring 36 abuts on the seat 32 a of the metal fitting 32. A compression coil spring is used as the spring 36, and the metal fitting 32 is urged in the axial direction by the elastic force of the spring 36.

At this time, the spring 36 is supported by the spring support portion 33 of the fitting 32, thereby preventing the spring 36 from being deformed in the direction orthogonal to the axis, and stabilizing the biasing direction of the spring 36 with respect to the fitting 32. I have.

A valve portion 35 is attached to the metal fitting 32 at a position outside the seat portion 32a. The valve portion 35 is made of a material having a good sealing property, for example, an elastic body.
7 is formed so as to close a flow passage (not shown) between an inlet and an outlet of the fluid formed in the inside 7.

The valve body 31 assembled as described above is assembled into a recess 37a formed at a predetermined position of the housing 37, so that the valve portion 35 is connected to the fluid flow passage in the housing 37. Will be positioned in a closed state.

After the assembly into the housing 37 is completed, the valve 3
In 1, the valve portion 35 closes the flow passage by the urging force of the spring 36 in a normal state, and the fluid on the inflow side is blocked by the valve portion 35.

Here, when the pressure of the fluid on the inflow side becomes larger than the urging force of the spring 36, the valve element 31 resists the urging force of the spring 36 by the action of this pressure, whereby the valve portion 35 flows. When the fluid is allowed to flow by opening the passage, and then the pressure of the fluid on the inlet side becomes smaller than the urging force of the spring 36, the valve element 31 is restored by the elasticity of the spring 36. Is closed and the flow of the fluid is prohibited.

However, even in the valve element 31 of such a conventional valve, the spring 36 may fall off from the fitting 32 at the time of assembling or assembling into the housing 37.

That is, since the valve element 31 of this valve is not provided with any means for holding the spring 36, when the valve element 31 is assembled into the housing 37 in a vertical positional relationship as shown in FIG. In some cases, during the operation, the spring 36 may fall from a concave portion formed by the spring support portion 33 of the metal fitting 32.

When the valve element 31 is assembled in a vertical position as shown in FIG. 7, the metal fitting 32 may fall off from the spring 36 during the operation.

Further, in addition to the conventional examples described above, various valves described in Japanese Utility Model Laid-Open No. 62-104082, Japanese Utility Model Publication No. 1-18353, Japanese Utility Model Application Laid-open No. Sho 62-10448 and the like are already known. However, all of these may cause the spring to fall off when the valve body is assembled.

This invention solves the above-mentioned problems, and in particular, prevents a spring or a metal fitting from dropping off during assembling and assembling, and facilitates assembling into a housing. An object of the present invention is to provide a valve having:

[0027]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is provided in a housing having a flow passage formed between a fluid inlet and a fluid outlet, and is provided with a spring. In a valve that opens and closes the flow passage with a urged valve element, the valve element includes a valve portion, a metal fitting provided on one surface of the valve portion, and a spring provided on the other surface of the metal fitting and holding the spring inside or outside. A spring supporting portion for supporting the spring, the spring supporting portion is formed with a convex or concave spring holding portion at a portion corresponding to the peripheral surface of the spring, and the spring holding portion is formed by a screw thread. It is configured to be formed.

[0028]

[Function] This invention adopts the above-mentioned means,
When assembling the valve body into the housing, the spring for biasing the valve body does not fall off the fitting.

That is, since the spring is supported by the spring supporting portion while being held by the spring holding portion, the spring and the metal fitting can be integrated, whereby the spring drops from the spring supporting portion. You can prevent it.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. FIG. 1 is a view showing a first embodiment of a valve according to the present invention, and particularly shows a valve body which is a main part thereof.

That is, the valve body 1 of the valve shown in FIG. 1 comprises a valve portion 5, a metal fitting 2, and a spring support portion 3, and has a spring holding portion 4 on one surface of the metal fitting 2 and a spring 6 The valve is formed by projecting a spring supporting portion 3 for supporting the valve member, and a valve portion 5 is attached to the other surface of the metal fitting 2. The valve body 1 is assembled into a housing (not shown) to form a valve. You. At this time, the valve portion 5 is positioned so as to close the fluid passage formed in the housing (not shown), and the valve element 1 opens and closes the passage according to the pressure of the fluid. Valve body 1
The spring 6 is held by a spring holding portion 4 formed on the metal fitting 2.

In FIG. 1, a metal fitting 2 has a disc-shaped seat 2.
a, and a columnar spring support 3 is formed at the center of one surface thereof.

A spring 6 is fitted on the spring support 3 of the metal fitting 2, and one end of the spring 6 is
To the seat 2a. Here, a compression coil spring is used as the spring 6, and the elastic force of the spring 6 urges the metal fitting 2 in the axial direction.

At this time, the spring 6 is supported by the spring supporting portion 3 of the metal fitting 2, whereby the spring 6
Is designed to prevent deformation in the direction perpendicular to the axis and to stabilize the biasing direction of the spring 6 against the metal fitting 2.

The spring support 3 of the metal fitting 2 is formed with a convex spring holder 4. The spring holding portion 4 has a protrusion having a barbed cross section formed in the same winding direction as the spring 6 on the outer peripheral surface of the spring support portion 3 to form a screw thread having a required pitch. When the spring 6 is fitted on the spring support 3, the spring support 3 is screwed into the spring 6 and fitted therein, so that the inside of the spring 6 is engaged with the spring holder 4. .

The valve portion 5 is mounted on the other surface of the metal fitting 2, that is, the surface of the seat portion 2a on which the spring support portion 3 is not formed. The valve portion 5 is made of, for example, an elastic material having good sealing properties, and is formed in a shape that closes a flow passage between a fluid inlet and a fluid outlet formed in a housing (not shown).

Next, the operation of the above will be described. The valve element 1 of the valve assembled as described above is incorporated in a part of a housing (not shown) to thereby provide a valve portion 5.
Are located in a state of closing a flow passage (not shown) to constitute a valve.

At this time, the valve body 1 of the valve normally closes the flow passage by the urging force of the spring 6, and the fluid on the inlet side is blocked by the valve part 5.

Here, when the pressure of the fluid on the inflow side becomes larger than the urging force of the spring 6, the valve element 1 moves against the urging force of the spring 6 by the action of this pressure.
As a result, the valve section 5 opens the flow passage to allow the fluid to flow.

Next, when the pressure of the fluid on the inlet side becomes smaller than the urging force of the spring 6, the elasticity of the spring 6 causes the valve body 1 to return to the initial position and move, whereby the valve portion 5 flows. The passage is closed and the flow of the fluid is prohibited.

And, in the valve element 1 of this valve,
At the time of assembling or assembling into the housing, the spring 6 does not fall off from the metal fitting 2.

That is, the valve body 1 is assembled in a state where the inside of the spring 6 is engaged with the spring holding portion 4 formed on the outer peripheral surface of the spring supporting portion 3 of the metal fitting 2 and forming a thread. , The spring 6 is firmly held by the spring supporting portion 3, whereby the spring 6 and the metal fitting 2 are integrally formed.

Accordingly, not only when assembling the valve body 1 but also when the valve body 1 is assembled into the housing in a vertical positional relationship as shown in FIG. Dropping from the holding portion 3 is prevented.

Also, even when the valve body 1 is assembled into the housing with the vertical position shown in FIG. 1 inverted, similarly, the fitting 2 is prevented from falling off from the spring 6 during the assembly work. I have.

In the above embodiment, the spring holding portion 4 has a barbed cross section. However, the spring holding portion 4 has a rectangular cross section as shown in FIG. May be formed, and the shape is not limited.

Further, in the above embodiment, the screw spring is formed to form the convex spring holding portion 4, but this spring holding portion 4 is formed by forming a screw groove on the outer peripheral surface of the spring supporting portion 3 to form a concave shape. Alternatively, the spring 6 may be engaged with the concave portion.

Next, a second embodiment shown in FIG. 3 will be described. That is, the valve body 11 of the valve shown in FIG.
Comprises a valve part 15, a metal fitting 12, and a spring supporting part 13, the spring supporting part 13 forming a concave portion for supporting the spring 16, and the valve part 1 outside the metal fitting 12.
5 and is formed by attaching
A spring holding portion 14 is formed on the inside of the inside, and a spring 16 is held by the metal fitting 12 with the spring holding portion 14.

The valve body 11 is installed in a housing (not shown) so that the valve portion 15 is positioned so as to close a flow passage formed in the housing (not shown). Open and close the flow passage.

In FIG. 3, the metal fitting 12 has an annular spring supporting portion 13 erected on the outer periphery of a disk-shaped seat portion 12a.
A recess is formed in the substrate.

A spring 16 is inserted into the recess of the metal fitting 12, and one end of the spring 16 is brought into contact with the seat 12 a of the metal fitting 12. Here, a compression coil spring is used as the spring 16, and the elastic force of the spring 16 urges the metal fitting 12 in the axial direction.

At this time, the spring support 1 of the metal fitting 12 is
The spring 16 is supported by 3, whereby the deformation of the spring 16 in the direction orthogonal to the axis is prevented, and the biasing direction of the spring 16 against the fitting 12 is stabilized.

A convex spring holding portion 14 is formed on the spring support portion 13 of the metal fitting 12. The spring holding portion 14 is formed by forming a ridge having a barbed cross-section on the inner peripheral surface of the spring support portion 13 in the same winding direction as the spring 16 to form a screw thread having a required pitch. When the spring 16 is inserted into the recess formed by the spring support 13, the spring 16 is screwed into the spring support 13 so as to be fitted.
6 is brought into a state where the spring holding portion 14 is engaged.

The valve portion 15 is attached to the other surface of the metal fitting 12, that is, the surface of the seat portion 12a on which the spring support portion 13 is not formed. The valve portion 15 is made of, for example, an elastic body having good sealing properties and is formed in a shape that closes a fluid passage (not shown).

Next, the operation of the above will be described. The valve body 11 of the valve assembled as described above is incorporated into a part of a housing (not shown), so that the valve portion 1 is formed.
5 is located in a state of closing a fluid passage (not shown),
A valve is configured.

At this time, in the normal state, the valve portion 15 closes the flow passage in the housing by the urging force of the spring 16, and the fluid on the inflow side is blocked by the valve portion 15.

Here, the pressure on the inflow port side is
Is greater than the urging force, the valve element 11 moves against the urging force of the spring 16 by the action of this pressure, whereby the valve portion 15 opens the flow passage and allows the flow of fluid,
Next, when the pressure of the fluid on the inlet side becomes smaller than the urging force of the spring 16, the elasticity of the spring 16 causes the valve body 11 to move.
Is restored, whereby the valve section 15 closes the flow passage and the flow of the fluid is prohibited.

In the valve element 11 of this valve, the spring 16 does not fall off from the metal fitting 12 at the time of assembling or assembling into the housing.

That is, the valve body 11 is assembled in a state where the outside of the spring 16 is engaged with the spring holding portion 14 formed on the inner peripheral surface of the spring support portion 13 of the metal fitting 12 and forming a thread. Therefore, the spring holding portion 14
As a result, the spring 16 is firmly held by the spring support portion 13, whereby the spring 16 and the metal fitting 12 are integrally formed.

Therefore, not only when assembling the valve element 11, but also in the state of the vertical position as shown in FIG.
Even when the housing 1 is installed in a housing (not shown), the spring 16 is prevented from dropping from the recess of the metal fitting 12 formed by the spring support 13 during the installation work.

The same applies to the case where the valve body 11 is assembled into the housing with the vertical positional relationship shown in FIG. 3 inverted, and the fitting 12 is prevented from falling off from the spring 16 during the assembling work. ing.

In the second embodiment, the shape of the spring holding portion 14 is shown as having a barbed cross section. However, the shape is not limited to this. Alternatively, a thread may be formed as a whole.

In the second embodiment, the thread is formed to form the convex spring holding portion 14. The spring holding portion 14 has a thread groove formed on the inner peripheral surface of the spring support portion 13. Alternatively, the spring 16 may be engaged with the concave portion.

In other words, the spring holding portion only needs to be formed on the peripheral surface of the spring supporting portion of the metal fitting corresponding to the spring in a convex or concave shape so that the spring can be engaged. The shape is not limited to this.

In the first and second embodiments, the springs 6, 16 are urged toward the metal fittings 2, 12 using a compression coil spring. However, the present invention is not limited to this. It is.

[0065]

As described above, according to the present invention, a convex or concave spring holding portion for engaging a spring with a spring supporting portion formed on a metal fitting of a valve body biased by a spring in a valve. Is formed, the valve body is assembled in a state where the spring is firmly held by the spring supporting portion, and as a result, the spring is prevented from dropping from the metal fitting or the metal fitting from being prevented from falling off from the spring. Can be.

Accordingly, since the spring and the metal fitting are integrated, the spring and the metal fitting can be simultaneously and reliably assembled when the valve body is assembled into the housing. There is an effect that it can be easily performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a modification of the first embodiment of the present invention.

FIG. 3 is a diagram showing a second embodiment of the present invention.

FIG. 4 is a diagram showing a conventional example.

FIG. 5 is a diagram showing a conventional example.

FIG. 6 is a diagram showing another conventional example.

FIG. 7 is a diagram showing another conventional example.

[Explanation of symbols]

 1, 11, 21, 31 ... valve body 2, 12, 22, 32 ... metal fittings 2a, 12a, 22a, 32a ... seats 3, 13, 23, 33 ... spring support parts 4, 14 Spring holding part 5, 15, 25, 35 Valve part 6, 16, 26, 36 Spring 27, 37 Housing 27a, 37a Recess

Claims (2)

(57) [Scope of request for utility model registration] And a spring (6) provided in a housing having a flow passage formed between a fluid inlet and a fluid outlet.
In the valve which opens and closes the flow passage with the valve elements (1) and (11) biased in (16), the valve elements (1) and (11) are
Valve parts (5) and (15), metal fittings (2) and (12) provided with the valve parts (5) and (15) on one surface, and metal fittings (2) and (1)
2) The spring (6) (1)
And (6) a spring support (3) and (13) for supporting the inner side or the outer side, and the spring support (3).
(13) A valve characterized in that a convex or concave spring holding portion (4) (14) is formed at a portion corresponding to the peripheral surface of the spring (6) (16). 2. The spring holding part (4) (14).
The valve according to claim 1, wherein the valve is formed by a thread.