JPH0537119Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention consists of placing a plug with a built-in valve that closes the open end of a fluid passage in a box embedded in a wall, and connecting a socket on the fluid distribution side to the plug. This relates to a type of pipe fitting that fits.

[Prior Art] The above types of pipe joints are mainly used as joints for heating piping that supplies hot water from a boiler installed outdoors to a generator placed indoors.
For example, a hot water supply line and a water return line coexist and must be treated as joints at the same time, so a pair of plugs is installed at the open end of the fluid passage that is piped inside the wall and opens on the wall surface. A pair of sockets installed in indoor piping are connected to the plug at the same time and separated. The plug protruding from the wall is generally embedded in the wall and the space around the plug is very narrow.
For this reason, it is desirable that the means for fixing the socket to the plug protruding into the narrow space on the wall surface be of simple structure, easy to operate, and securely fixable. Conversely, when separating the plug and socket, since hot water is circulating,
Care must be taken to prevent careless manipulation.

The conventional plug-socket connection means and separation means are all complicated in structure, making their operation cumbersome.

[Problems that the invention aims to solve] As mentioned above, conventional pipe fittings have a complicated structure for fixing the plug and socket, making it difficult to operate in a narrow and limited space. The problem is that it takes a lot of time, making the work of connecting and disconnecting the socket to the plug a tedious task.

Also, it was necessary to take care to prevent the plug and socket from being separated inadvertently.

In view of the above-mentioned points, this invention provides a pipe joint that facilitates and securely connects and secures a socket to a plug, while also preventing accidental separation.

[Means for Solving the Problems] In order to achieve the above object, this invention fixes a piping block having a pair of fluid passages to a box having a space buried in the wall, and the piping block has a , a pair of plugs each having a spring-biased closing valve connected to the fluid passage are fixed so as not to protrude from the box, and an engagement pin having a locking groove at an intermediate position between the pair of plugs; On the other hand, the socket block has a pair of sockets each having a built-in closing valve facing the plug and biased by a spring in the fluid passage, and housing the pin in a position facing the engaging pin. A fixing rod is provided with a hole perpendicular to the hole and has a locking portion that engages with the locking groove of the pin, and is biased by a spring, and the fixing rod is operated. The operating tip of the fixing rod is provided at a position protruding from the socket block, and when the plug and socket are in a connected state, the operating tip of the fixing rod is located within the box.

[Function] When the socket of the socket block is fitted into the plug fixed in the box inside the wall, the engagement pin provided on the piping block toward the axial direction of the plug enters the hole provided in the socket block,
A fixing rod that is slidably provided orthogonally to the hole is biased by a spring, and its locking portion elastically engages with the locking groove of the engagement pin that has entered, and this The socket block is fixed to the piping block by the engagement between the engagement groove of the pin and the locking part of the fixing rod, and the connected state of the plug and socket is maintained.

When the operating tip of the fixing rod is pushed in against the bias of the spring, the engagement between the pin and the fixing rod is released, and the action of the spring biases the closing valves of both the plug and the socket. At this point, the socket pops out from the plug, and the piping block and socket block are separated, and at the same time, the fluid passage between the plug and the socket is closed by the closing valve.

[Example] Hereinafter, this invention will be described in detail based on an example shown in the drawings, but this invention is not limited to the example.

The embodiment shown in the drawings shows a pipe joint used as a joint for piping having two lines, water supply and water distribution, and has a wall 1 and a space 8 buried in the wall 1. Box, 3 is Box 2
4, the piping block 3 has a pair of fluid passages 2,2.

5 is a fluid passage 2, 2 that opens into the piping block 3;
The plugs 5 are fixed so as not to protrude from the box 24 to the outside of the wall 1.

Reference numeral 6 represents a closing valve that is built into the plug 5 and closes off the fluid passages 2, 2, and 7 represents a spring that biases the closing valve 6 in the closing direction. Reference numeral 9 designates an engagement pin that is provided at an intermediate position between the plugs 5, 5 in the space 8 of the box 24 and protrudes from the piping block 3 in the axial direction of the plug 5. A locking groove 10 is formed on the outer peripheral surface of the distal end of the engagement pin 9, and a conical head 11 is formed on the distal end.

Reference numeral 12 denotes a socket block, which incorporates sockets 25, 25 that fit into the plugs 5, 5. A closing valve 15 is provided in the fluid passage 13 of the sockets 25, 25, and is biased by a spring 14 to close the fluid passage 13. The closing valves 6, 15 are pressed against each other and retracted to open the fluid passages 2, 13.

16 is a sealing member. Reference numeral 17 denotes a hole for accommodating the engagement pin 9 provided at a position facing the engagement pin 9 of the socket block 12;
Reference numeral 7 is designed to allow and house the engagement pin 9 when the socket 25 is fitted into the plug 5 and connected. 18 is socket block 12
A fixing rod is slidably provided at an eccentric position of the socket block 12 so as to be perpendicular to the hole 17, and a hole 19 having the same diameter or a larger diameter as the hole 17 is formed in the fixing rod 18. A locking portion 20 that engages with the locking groove 10 of the engagement pin 9 inserted into the hole 17 is formed at the inner peripheral end of the hole 19 . Reference numeral 21 denotes a spring that urges the fixing rod 18 in the engaging direction. When the engaging pin 9 is not inserted into the hole 17, the fixing rod 18 is pressed against the spring 2.
1, the operating tip 22 protrudes from the socket block 12, and the hole 19 formed in the fixing rod 18 overlaps the hole 17 by approximately half.

When the socket 25 is fitted and connected to the plug 5, the engaging pin 9 is inserted into the socket block 12.
The head 11 formed at the tip of the engagement pin 9 enters the hole 19 of the fixing rod 18 perpendicular to the hole 17, and the head 11 connects the fixing rod 18 to the spring 21. When the head 11 passes through the hole 19, the fixing rod 18, which had been retreated by the head 11, moves forward due to the elastic force of the spring 21, and the engagement formed in the hole 19 of the fixing rod 18 moves forward. The stop portion 20 elastically engages with the stop groove 10 of the engagement pin 9. As a result, the socket block 12 is fixed to the piping block 3, and the connection between the plug 5 and the socket 25 is maintained.

When the socket 25 is to be removed from the plug 5, the operating tip 22 of the fixing rod 18 protruding from the socket block 12 is pressed to release the locking portion 20 from the locking groove 10 of the engagement pin 9. That's fine.

That is, when the operating tip 22 of the fixing rod 18 is pushed in against the bias of the spring 21, the engagement between the pin 9 and the fixing rod 18 is released, and the plug 5 is released.
The socket 25 automatically pops out from the plug 5 by the action of the springs 7, 21 which bias the closing valves 6, 15 of both the piping block 3 and the socket 25, and the piping block 3 and the socket block 12 are separated, and at the same time the plug 5 and the socket 25 are separated. The fluid passages 2, 13 of 25 are closed by closing valves 6, 15.

[Effects of the invention] As described above, according to this invention, a piping block having a pair of fluid passages is fixed to a box having a space to be buried in a wall, and a piping block having a pair of fluid passages is provided in the piping block so as not to protrude from the box. As shown in FIG. The socket has a pair of sockets facing the plug and each having a closing valve biased by a spring in the fluid passage, and has a hole for accommodating the engagement pin at a position opposite to the engagement pin. A fixing rod having a hole having a locking portion that engages with the locking groove of the pin is disposed perpendicularly to the hole and biased by a spring, and the operating tip of the fixing rod is removed from the socket block. It is provided in a protruding position, and when the plug and socket are in a connected state, the operating tip of the fixing rod is located within the box, so when connecting the socket to the plug, simply connect the plug to the socket. Since both can be fixed by a simple method such as inserting a socket, it is easy to fit the socket to the plug, and both can be fixed securely. It is extremely convenient as a pipe joint when space is narrow, and furthermore, since it has a simple structure, it is easy to handle and can be easily manufactured.

Furthermore, since the tip of the fixing rod for separating the plug and socket is located inside the box and can only be operated by a trained person, an amateur may carelessly remove the fixing rod for this operation. It is safe because it will not come off accidentally by touching the rod. In addition, since the disconnection is automatically performed by the spring force of the closing valve spring built into the plug and socket, it is safe and prevents leakage of hot water. In particular, since the plug is placed inside the box, if the box is equipped with a lid, it is safe to avoid touching the plug in the hot water supply line with bare hands.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a front view showing the plug side, Figure 2 is a plan view of the socket connected to the plug shown in Figure 1, Figure 3 is a sectional view taken along line C-C in Figure 2, and Figure 4 is A in Figure 1. -A
5 is a sectional view taken along line DD in FIG. 2, FIG. 6 is a sectional view taken along line BB in FIG. The figure is a left side view of FIG. 2, and FIG. 9 is a sectional view taken along line E--E of FIG. 5. DESCRIPTION OF SYMBOLS 1... Wall body, 2... Fluid passage, 3... Piping block, 4... Open end, 5... Plug, 6... Closing valve, 7... Spring, 9... Engaging pin,
10...Latching groove, 12...Socket block, 1
3...Fluid passage, 14...Spring, 15...
Closing valve, 17...hole, 18...fixing rod, 19
... hole, 20 ... locking part, 21 ... spring,
22... Operating tip, 24... Box, 25
...Socket.

Claims (1)

[Scope of utility model registration request] A piping block having a pair of fluid passages is fixed to a box having a space buried in the wall,
A pair of plugs each having a spring-biased closing valve connected to the fluid passage are fixed to the piping block so as not to protrude from the box, and a locking groove is provided at an intermediate position between the pair of plugs. The socket block is provided with a pair of sockets each having a closing valve opposite to the plug and biased by a spring in the fluid passage, and having a position opposite to the engaging pin. a hole for accommodating the pin is bored in the hole, and a fixing rod is disposed perpendicularly to the hole and has a hole having a locking portion that engages with the locking groove of the pin, and is biased by a spring. A pipe joint in which the operating tip of the fixing rod is provided at a position protruding from the socket block, and the operating tip of the fixing rod is located within the box when the plug and socket are in a connected state. .