JPH0523908Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention relates to a connection structure to a manifold or sub-base, and is particularly effective when applied to a connection structure between a manifold, etc. and a fluid device such as a valve that controls air pressure. related to technology.

[Prior Art] In a structure for connecting a manifold or a sub-base, a manifold or the like and a fluid device such as a valve are usually connected through a sealing member.

For example, a seal member applied to this connection structure has a plurality of inner seal parts and an outer seal part formed around the outer periphery of these inner seal parts and surrounding the inner seal parts, Connection parts between fluid ports between manifolds, etc. and fluid devices such as valves are directly sealed by inner seal parts, and outer seal parts are respectively provided on opposing surfaces of the connection parts of manifolds, etc. and fluid equipment. Being close.

[Problem to be solved by the invention] By the way, when inspecting for fluid leakage from the connection parts of each pneumatic equipment, for example, during product shipping inspection of pneumatic equipment or inspection after piping, it is normal to check the connections. This is done by applying a soap solution to the area.

However, in the connection structure described above, the gap between the opposing surfaces of the connection part between the manifold, etc., in which the sealing member is interposed, and the fluid device is extremely narrow, making it difficult to inspect for fluid leakage by applying soap solution, etc. There is a problem.

An object of the present invention is to provide a connection structure to a manifold or subbase that allows easy and reliable testing for fluid leaks.

[Means for Solving the Problems] A connection structure to a manifold or sub-base of the present invention includes a manifold or sub-base, a fluid device connected to the manifold or sub-base, and the manifold or sub-base and the fluid device. and a sealing member for sealing a connection portion between the manifold or subbase and the fluid device, the structure for connecting the manifold or subbase to the manifold or subbase in which the fluid device is connected to the manifold or subbase via the sealing member, seals the connection portion between the fluid port of the manifold or sub-base and the fluid port of the fluid device;
A space is formed at a predetermined interval on the outer circumferential surface of the inner seal portion, and a space is formed at a predetermined interval on the outer circumferential surface of the inner seal portion, and a space is formed at a predetermined interval on the outer peripheral surface of the inner seal portion, and A fluid leakage inspection port is formed, which is connected to a space between the inner seal part and the outer seal part, and is opened on the outside of the space. The structure is based on

[Operation] According to the above-described means, the fluid leaking from the connection portion of each fluid port between the manifold or sub-base and the fluid device is passed through the space between the inner seal portion and the outer seal portion to the liquid leakage inspection port. Therefore, by checking whether or not fluid has flowed out from this inspection port, it is possible to easily and reliably test for fluid leakage.

[Embodiment 1] FIG. 1 is a plan view showing a connection structure to a manifold according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line - in FIG. 1.

The connection structure of this embodiment includes a block-shaped manifold 1 and a valve 3 (fluid device) such as a solenoid valve connected to this manifold 1 via a seal member 2.

The upper surface of the manifold 1 has an inlet port 1
A (fluid port), three sets of discharge ports 1b and 1c (fluid ports), and a pair of screw holes 1d are opened, and the three sets of valves 3 are connected to each other.

Further, as shown in FIG. 2, inside the manifold 1, an inflow passage 1e and discharge passages 1f and 1g extend parallel to each other along the longitudinal direction of the manifold 1, and each It is open at the end face of 1.

Each set of inlet port 1a, outlet port 1b, 1c
are in communication with the inlet passage 1e and the discharge passages 1f and 1g, respectively.

"On the lower surface of the valve 3, an inlet port (fluid port) (not shown) is connected to a set of inlet ports 1a, discharge ports 1b, 1c of the manifold 1, respectively,
A pair of discharge ports (fluid ports) are opened.

The sealing member 2 is made of an elastic material such as synthetic rubber or resin, and has a rectangular plate-like main body 2a.
, communication holes 2b, 2c, 2b that are bored along the longitudinal direction of the main body part 2a, and a pair of screw holes 2e that are bored in the substantially diagonal corners of the main body part 2a. It is equipped with

Ring-shaped inner seal portions 2f, 2g, and 2h and an outer seal portion 2i are provided in a protruding manner on one surface of the main body portion 2a.

The inner seal portions 2f, 2g, and 2h are formed along the opening edges of the communication holes 2b, 2c, and 2d, respectively.

The outer seal portion 2i is connected to the inner seal portions 2f, 2.
It is formed around the outer periphery of the main body portion 2a so as to surround g and 2h at a predetermined interval. Further, a portion of the outer seal portion 2i is discontinuous, and this discontinuous portion serves as a fluid leakage inspection port 4.

The other surface of the seal member 2 is the seal member 2 described above.
Similarly to one side of , inner seal parts 2f, 2g, 2h
, outer seal portion 2i, and fluid leakage inspection port 4
are formed respectively.

The sealing member 2 having such a structure is interposed at the connection site between the manifold 1 and the valve 3, and the manifold 1 and the valve 3 are connected by a screw 5, that is, a screw screwed into the valve body 3. 5 passes through the screw hole 2e of the seal member 2 and connects to the screw hole 1 of the manifold 1.
It is screwed and connected to d.

As shown in FIG. 2, in this connected state, the inlet port 1a of the manifold 1 and the inlet port (not shown) of the valve 3 are communicated and connected through the communication hole 2c of the seal member 2, and the connection portion is located inside. It is sealed by a seal portion 2g.

Similarly, the discharge ports 1b, 1 of the manifold 1
c and a pair of discharge ports (not shown) of the valve 3 are communicated and connected through the communication holes 2b and 2d of the sealing member 2, respectively, and their connection portions are sealed by the inner seal portions 2f and 2h. There is.

On the other hand, the outer seal portions 2i are brought into close contact with opposing surfaces of the connecting portions of the manifold 1 and the valves 3 to seal these portions.

Then, the inner seal portions 2f, 2 on the valve 3 side
A space 6a is formed between g, 2h and the outer seal portion 2i, and this space 6a communicates with the fluid leakage inspection port 4 on the same side, and the fluid leakage inspection port 4 is opened outside of the space 6a. has been done.

Further, a space 6b is formed between the inner seal portions 2f, 2g, 2h and the outer seal portion 2i on the manifold 1 side, and this space 6b communicates with the fluid leakage inspection port 4 on the same side, and the fluid leakage inspection port 4 is communicated with the fluid leakage inspection port 4 on the same side. A port 4 is opened outside the space 6b.

Next, the operation of this embodiment will be explained.

In the connection structure of this embodiment, manifold 1
When inspecting for air pressure leakage from the connecting portion between the valve 3 and the valve 3, for example, a detector or the like that senses a predetermined air pressure may be placed close to a pair of fluid leakage inspection ports 4 in either of the seal members 2. Since air pressure is flowing out from the fluid leakage inspection port 4, it is checked whether or not it is present.

In this case, if air pressure leaks from the inner seal portions 2f, 2g, 2h of any of the seal members 2, that air pressure will flow out to the space 6a or space 6b on the air pressure leak side of the seal member 2, and The fluid flows outward from the fluid leakage inspection port 4 communicating with the spaces 6a and 6b.

Therefore, by inspecting the presence or absence of air pressure leakage from the fluid leakage inspection port 4 of each sealing member 2, the presence or absence of air pressure leakage from the connection portion between the manifold 1 and each valve 3 can be easily and reliably inspected. be able to.

In addition, if air pressure leakage is confirmed in this way, by inspecting whether air pressure is flowing out from either of the pair of fluid leakage inspection ports 4 where the air pressure leakage has been confirmed, Air pressure leaks from the inner seals 2f, 2g, 2h, or the inner seals 2f, 2f on the valve 3 side.
It is possible to easily and reliably check whether there is an air pressure leak from 2g or 2h.

[Embodiment 2] FIG. 3 is a plan view showing a connection structure to a manifold according to another embodiment of the present invention, and FIG. 4 is a sectional view taken along the line - in FIG. 3.

The seal member 2 of the second embodiment has a pair of communication holes 2j on the inner side of the outer seal portion 2i in the main body portion 2a.
is bored through the valve 3 through this communication hole 2j.
The side space 6a and the space 6b on the manifold 1 side are communicated with each other.

Further, the fluid leakage inspection port 4 is formed by a flow path extending within the manifold 1, and is opened at an end surface of the manifold 1.

Three sets of fluid leakage inspection ports 4 are provided, corresponding to the number of valves 3 connected to the manifold 1.

As shown in FIG. 4, the fluid leakage inspection port 4 is communicated with a space 6b on the manifold 1 side, and is also communicated with a space 6a on the valve 3 side through the space 6b and the communication hole 2j.

In such a connection structure of Example 2, the inner seal portions 2f, 2g,
If air pressure leaks from 2h, the air pressure flows out into the space 6b or into the space 6a and flows out from the fluid leakage inspection port 4 through the communication hole 2j and the space 6b.

Therefore, by inspecting the presence or absence of air pressure outflow from each fluid leakage inspection port 4 formed in the manifold 1, it is possible to easily and reliably detect the presence or absence of air pressure leakage from the connection portion between the manifold 1 and each valve 3. Can be inspected.

[Embodiment 3] FIG. 5 is a plan view showing a connection structure to a manifold which is still another embodiment of the present invention, and FIG.
It is a sectional view taken along the - line in the figure.

Similarly to the above-described second embodiment, the sealing member 2 of the third embodiment also has a pair of communication holes 2j formed on the inner side of the outer seal portion 2i in the main body portion 2a, and the communication holes 2j allow the valve to be closed. The space 6a on the third side and the space 6b on the manifold 1 side are communicated with each other.

Further, the fluid leakage inspection port 4 is formed by a groove cut into the upper surface of the manifold 1, and is opened at the end of the upper surface of the manifold 1.

As shown in FIG.
communicates with the space 6b on the manifold 1 side, and also communicates with the space 6a on the valve 3 side through the space 6b and the communication hole 2j.

In the connection structure of the third embodiment as well, similarly to the second embodiment described above, the connection between the manifold 1 and each valve 3 is checked by inspecting the presence or absence of air pressure outflow from each fluid leakage inspection port 4. The presence or absence of air pressure leakage from a site can be easily and reliably inspected.

Although the present invention has been specifically explained based on Examples above, the present invention is not limited to the above-mentioned Examples 1 to 3, and various changes can be made without departing from the gist thereof.

For example, in Examples 1 to 3, the valve 3 is connected to the manifold 1, but in the present invention, the structure is such that the valve 3 is connected to the manifold 1 by being interposed between the manifold and a fluid device such as a valve. It is also possible to apply it to the connection structure to the sub-base.

Further, it is possible to have a structure in which fluid devices other than the valve 3 are connected to the manifold 1 or the sub-base.

Furthermore, in Examples 1 to 3, the fluid leakage inspection port 4 is described as functioning only to inspect fluid leakage, but for example, it functions as a discharge port for fluid leaked from a sealing member, that is, the fluid It is also possible to adopt a structure that also has the function of preventing contamination of the clean space etc. by leaked fluid by reliably discharging the fluid out of the clean space such as a clean room. In the case of such a structure, for example, the fluid leakage inspection port 4
It is conceivable to have a structure in which a pipe for discharging leakage fluid is connected to the pipe.

[Effects of the invention] According to the invention, the sealing member that seals the connection area between the manifold or sub-base and the fluid device includes a connection area between the fluid port of the manifold or sub-base and the fluid port of the fluid device. an inner seal portion that is sealed and protrudes from the opposing surface of the manifold or sub-base and the fluid device, and a space is formed at a predetermined interval around the outer periphery of the inner seal portion; and an outer seal portion protruding from the opposing surface of the fluid device, and a fluid leakage inspection port that communicates with a space between the inner seal portion and the outer seal portion and opens outside the space. By forming this, the following effects can be obtained.

(1) Fluid leaking from the connection site of each fluid port between the manifold or sub-base and the fluid device flows out from the fluid leakage inspection port through the space between the inner seal part and the outer seal part. By inspecting the presence or absence of fluid outflow from the inspection port, fluid leakage can be easily and reliably inspected.

(2) Due to the effect of (1), it is possible to improve the reliability of the connection structure between the manifold or sub-base and the fluid equipment.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a connection structure to a manifold that is an embodiment of the present invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a manifold that is another embodiment of the invention. 4 is a sectional view taken along the - line in FIG. 3,
FIG. 5 is a plan view showing a connection structure to a manifold according to still another embodiment of the present invention, and FIG. 6 is a sectional view taken along the - line in FIG. 5. 1... Manifold, 1a... Inlet port (fluid port), 1b, 1c... Discharge port (fluid port), 1d... Threaded hole, 1e... Inflow path,
1f, 1g...Discharge path, 2...Seal member, 2a
...Main part, 2b, 2c, 2d... Distribution hole, 2e
...Screw hole, 2f, 2g, 2h...Inner seal portion, 2i...Outer seal portion, 2j...Communication hole, 3
... Valve (fluid equipment), 4 ... Fluid leak inspection port,
5...Screw, 6a, 6b...Space.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of a manifold or sub-base, a fluid device connected to the manifold or sub-base, and a sealing member for sealing a connection portion between the manifold or sub-base and the fluid device, A connection structure to a manifold or sub-base in which the manifold or sub-base and the fluid device are connected via the seal member, wherein the seal member includes a fluid port of the manifold or sub-base and a connection structure for the fluid. an inner seal portion that seals a connection portion with a fluid port of a device and is provided protrudingly on the opposing surface of the manifold or sub-base and the fluid device; and a space at a predetermined interval around the outer periphery of the inner seal portion. and communicates with the space between the manifold or sub-base and the facing surface of the fluid device, respectively, and the space between the inner seal part and the outer seal part, and communicates with the space outside the space. A connection structure to a manifold or sub-base, characterized in that a fluid leakage inspection port is formed that is opened at the manifold or sub-base. 2. The connection structure to a manifold or sub-base according to claim 1, wherein the fluid device is a valve.