JP3349252B2 - Piping fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention seals a pipe tip so that fluid does not flow out of the pipe when not connected, and when connected, fluid flows freely between joints. In particular, the present invention relates to a pipe joint that is effective for connecting a pipe of a food plant or a cell culture device or the like which requires aseptic installation and removal of a pipe.

[0002]

2. Description of the Related Art An example of a conventional pipe joint will be described with reference to FIG. Reference numeral 01 denotes a male joint, which is a male joint main body 0 in which a cavity 011 having a through hole 02 at a closed end is formed.
3. The rear end is inserted into the through hole 02 of the male joint main body 03 to communicate the inside and outside of the fixed hollow needle 04 and the hollow needle 04 provided at the tip of the needle 04. It comprises a rubber plug 06 inserted into the distal end of the needle 04 for closing the needle hole 05, and a spring 07 attached between the distal end of the male joint main body 03 and the rear end of the rubber plug 06. A female joint 08 is provided with a female joint body 09 having a hollow portion whose tip is open to the outside, and a female joint 09
And a fixed stopper 010 fitted and fixed to the distal end of the plug.

In this pipe joint, as shown in FIG. 2A, a male joint 01 and a female joint 08 are opposed to each other, and as shown in FIG. 2B, a fixing plug 010 of the female joint 08 is used. The rubber plug 06 of the male joint 03 is pushed in, and as shown in FIG.
10 and the needle hole 05 is located in the hollow portion inside the female joint 08 to connect the piping.

When the connected male joint 01 and female joint 08 are separated from each other, the two joints 01 and 08 are moved away from each other so that the state shown in FIG.
By returning to the next state shown in FIG. 2A through the state shown in FIG. 2B, the two joints 01 and 08 are separated in a state where the rubber plug 06 and the fixed plug 010 are in contact with each other.

[0005] In such a pipe joint, as shown in FIG.
6 is pushed back to the position where the needle hole 05 is closed by the spring 07 by releasing the pressing force from the fixing plug 010 at the time of separation, but various germs are discharged to the outside between the distal end of the joint body 03 and the rear of the rubber plug 06. The bacteria may adhere to the exposed needle 04, adhere to the rubber stopper 06 pushed in by the female joint 08, and remove the pipe joint and close the needle hole 05 with the rubber stopper 06. 04, the fluid contained in the cavity 011 in the male joint 03 is
There is a possibility of contamination by various bacteria.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional pipe joints, and prevents external bacteria from entering the inside of the pipe joints during connection and separation of the pipe joints. An object of the present invention is to provide a pipe joint in which an internal fluid is not contaminated by various bacteria.

[0007]

Therefore, the pipe joint of the present invention has the following means. (1) A male joint that constitutes one of the pipe joints:-A male joint body with a cavity formed inside and a through hole provided at the closed end-A rear end is inserted and fixed in the through hole of the male joint body And
A needle formed at the tip with a needle hole connecting the hollow part formed inside and the outside; ・ When separated, the tip of the needle penetrates to the extent that the needle hole is closed, A moving stopper made of a soft material that prevents the opening to the outside and penetrates the tip of the needle at the time of connection to open the needle hole.- Between the rear end of the moving stopper and the tip of the male joint body A spring that holds the movable tap when it is separated and is separated at a position that closes the needle hole; • encloses a hollow portion provided inside the movable tap and the spring in a state in which the movable tap and the spring can move freely; A cylindrical body having a filter with an opening communicating between the hollow part and the outside, and a base end of which is fixed to the distal end of the male joint body.- A moving stopper and a hollow that move through the hollow part of the cylindrical body A seal member interposed in a sliding portion with the portion to seal the sliding portion. (2) a female joint constituting the other of the pipe joints: a female joint body in which a hollow portion whose front end is opened to the outside is formed; When separated, the hollow part is closed, and when connecting, the moving stopper that is inserted into the hollow part of the cylindrical body and moves through the needle is moved toward the male joint body against the spring force. The tip of the needle penetrating the moving stopper penetrates the inside of the moving stopper, and the needle hole is opened to the hollow part of the female joint body.

[0008]

In the pipe joint of the present invention, when the male joint and the female joint are detached and separated, the moving plug of the soft material into which the tip of the needle of the male joint is inserted is inserted into the needle hole of the needle by a spring. It is held in the blocking position. At this time, the gap between the moving plug and the cylindrical body is sealed by the sealing material, and the space between the rear end of the moving plug and the front end of the male joint body formed inside the cylindrical body is completely separated from the outside air. Is not mixed.

When connecting the male joint and the female joint, when the distal ends of the male joint and the female joint are brought close to each other, the moving stopper of the male joint is opposed to the spring by the fixed stopper attached to the distal end of the female joint. It is pushed toward the base of the needle (rearward),
Subsequently, the tip of the needle penetrates through the fixing plug of the female joint and enters the inside of the female joint, and a needle hole provided at the distal end of the needle appears in a hollow portion provided inside the female joint. In this way,
The fluid inside the two joints communicates with each other through the needle holes. Even while the moving tap is moving, the sealing material seals the sliding portion between the moving tap and the peripheral surface of the cylindrical body, so that no germs enter the space inside the moving tap. In addition, when the moving stopper moves rearward, the volume of the space formed by the rear end of the moving stopper, the tip of the male joint body, and the peripheral surface of the cylindrical body is reduced, and the internal pressure increases, but the cylindrical body is closer to the male joint body. From the opening with the filter provided in the part, the air exits into the space outside the cylindrical body, so that the internal pressure is kept constant. Further, since the filter does not allow bacteria to pass through, the bacteria do not enter through the opening.

As described above, the male joint and the female joint are connected and separated without removing the moving stopper that closes the needle hole.
In connection and disconnection, the needle hole of the male joint and the entire needle do not come into contact with the outside air, and are not contaminated by bacteria or the like.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a pipe joint according to the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an embodiment of the present invention in a partially broken section, and FIG.
Indicates a connection, and FIG. 1C shows a connection. The male joint 1 includes a male joint main body 2, a needle 3, a moving stopper 4, a spring 5, a cylindrical body 6, a sealing member 7, and an opening 8 having a filter 9. The filter 9 is secured by a filter cap 10 so as not to come off the opening 8. A filter cap hole 11 is opened in the filter cap 10, and air in the cylindrical body 6 flows to and from the outside via the filter 9 and the filter cap hole 11.

The joint body 2 includes a cavity 12 having a closed end.
The root (rear end) of the needle 3 is inserted and fixed in the through hole 13 provided at the distal end. Needle 3
Is formed in a hollow shape, and a tip portion thereof is provided with a needle hole 14 communicating the outside with the inside of the cavity. The distal end of the needle 3 is inserted into the moving stopper 4 so that the needle hole 14 is closed. The connection of the moving tap 4 and the male joint body 2
A spring 5 is interposed between the movable stopper 4 and the movable stopper 4 at the position shown in FIG. The sealing material 7 seals a gap of the sliding portion between the outer peripheral surface of the moving stopper 4 and the inner peripheral surface of the hollow portion of the cylindrical body 6.

Next, the female joint 20 is formed hollow.
The female joint body 21 has a distal end that is open to the outside, and a fixing plug 22 that is fitted into the distal end of the female joint body 21 and blocks the hollow interior of the female joint body 21.

Since this embodiment is configured as described above,
When connecting the male joint 1 and the female joint 20, FIG.
As shown in (a), the male joint 1 and the female joint 20 are arranged in a state where the distal end of the movable plug 4 and the distal end of the fixed plug 22 are opposed to each other. 22 is brought into contact. Furthermore, when they are brought closer together, FIG.
As shown in (b), with the tip of the moving stopper 4 and the tip of the fixed stopper 22 in contact with each other, the moving stopper 4 moves toward the root (rear) of the needle 3 against the spring 5 and Is a fixed stopper 2
2 is inserted. At this time, the sealing member 7 attached to the outer periphery of the moving stopper 4 seals the gap between the outer peripheral surface of the moving stopper 4 and the sliding portion formed on the inner peripheral surface of the cylindrical body 6 while sealing the moving stopper 4.
At the same time, it moves toward the root (rear) of the needle 3. On the other hand, the air in the cylindrical body 6 compressed by the backward movement of the moving stopper 4 passes through the filter 9 inserted into the opening 8 and exits to the external space. When the approach of the male joint 1 and the female joint 20 is further continued, as shown in FIG. 1C, the needle 3 is moved to a position where the needle hole 14 of the needle 3 appears in the hollow interior provided inside the female joint main body 21. The fluid in both joints can penetrate through the fixing plug 22 so as to be in communication with each other.

When the connected male joint 1 and female joint 20 are separated from each other, the two joints 1 and 20 are moved away from each other so that the state shown in FIG. By returning to the state shown in FIG. 1A through the state, the two joints are separated in a state where the tip of the movable plug 4 and the tip of the fixed plug 22 are in contact with each other. Also at this time, the sealing member 7 attached to the moving stopper 4 moves toward the tip (forward) of the needle 3 together with the moving stopper 4 while sealing the gap between the stopper 4 and the cylindrical body 6. The air in the cylindrical body 6 is decompressed by the movement of the moving stopper 4, so that air enters the cylindrical body 6 through the filter 9 from outside. Since the air enters through the filter 9, no germs enter the air.

As described above, in the present embodiment, the air inside the cylindrical body 6 travels to and from the outside through the filter 9 that does not allow bacteria to pass through, and furthermore, the root portion of the needle 3 that does not penetrate the moving stopper 4 and the fixing stopper 22. Since the fluid is also isolated from the outside by the cylindrical body 6, the fluid accommodated in the pipe joint is not contaminated with various bacteria.

[0017]

According to the pipe joint of the present invention, the air in the cylindrical body flows to and from the outside through a filter that does not pass through various germs by the configuration described in the claims.
The connection and disconnection of the piping joint can be performed without contaminating not only the needle hole and the tip of the needle covered with the movable plug and the fixing plug of the soft material but also the root of the needle with various bacteria.

[Brief description of the drawings]

FIG. 1 shows one embodiment of a pipe joint of the present invention, and FIG.
FIG. 1 is a side view showing a partly broken section of the pipe joint when it is separated, and FIG.
FIG. 1B shows the state shown in FIG. 1A while FIG. 1C shows the state shown in FIG.
Are shown when connected.

FIG. 2 shows an example of a pipe joint, FIG. 2 (A) is a side view showing a partially broken cross section at the time of separation, and FIG.
FIG. 2C shows the connection in FIG. 2A during the connection in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Male joint 2 Male joint main body 3 Needle 4 Moving plug 5 Spring 6 Cylindrical body 7 Sealing material 8 Opening 9 Filter 10 Filter cap 11 Filter cap hole 12 Male joint main body cavity 13 Male joint main body through hole 14 Needle hole 20 Female joint 21 Female joint body 22 Fixing plug

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeaki Negishi 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe-shi Inside Kobe Shipyard, Mitsubishi Heavy Industries, Ltd. (72) Inventor Kazuhide Uemura Komatsudori, Hyogo-ku, Kobe-shi, Hyogo 5-1-16-1 Shinryo High-Tech Co., Ltd. (56) References JP-A-6-201079 (JP, A) JP-A-5-106770 (JP, A) JP-A-2-66395 (JP, A) JP-A-55-86464 (JP, A) JP-A-1-80892 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16L 37/28-37/47 F16L 29/00 -29/04 F16L 21/00

Claims (1)

(57) [Claims] 1. A male joint body having a cavity formed therein and having a through hole at a distal end thereof, and a needle hole having a rear end inserted into the through hole and fixed to the male joint main body and having a distal end communicating with the outside. A movable needle formed of a soft material into which the tip of the needle penetrates and closes the needle hole; a spring interposed between the male joint body and the movable stopper; A cylindrical body provided with a hollow portion that movably accommodates a plug and a spring, and a cylindrical body provided with an opening portion provided with a filter at a base end portion connected to the distal end of the male joint main body; A male joint made of a sealing material provided on a sliding portion of the plug, a female joint body having a hollow portion whose front end is open to the outside, and a female joint body fitted into the front end of the female joint body to resist the spring. The tip of the needle penetrating the moving stopper that moves And a female joint comprising a fixed stopper.