JPS6348857Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe joint that allows a socket without a built-in valve body to be easily changed to a socket with a built-in valve body.

Conventional sockets for pipe joints include those with a structure that does not include a valve body, and those with a structure that includes a valve body in both or one of the plug and the socket, and the valve body opens and closes when the plug is attached or removed.

Therefore, if a consumer who only owns a socket without a valve body needs a socket with a built-in valve body, he or she must separately purchase a socket with a built-in valve body. , it was extremely uneconomical. In addition, when a type with a built-in valve body and a type without a built-in valve body are to be used, that is, when it is necessary to replace the valve body, a tool such as a wrench must be used to perform the replacement, which is time consuming.

The present invention has been developed in view of these conventional drawbacks, and has a structure that includes a plug portion with a circumferential groove on the outer periphery, and a sleeve on the outer periphery to which an advancing force is applied by a compression spring, and the sleeve is used to restrain or A socket portion provided with a locking ball to be released is formed into an integral structure with their axes aligned with each other, and an opening for installing a plug in the socket portion is formed in communication with a fluid passage of the plug portion, and a hole is formed in the opening. The valve body built-in type has a seal ring that seals the inserted plug, and a valve body that opens in the fluid passage of the plug part against the elastic force of the spring due to the pressing force from the opening side. a first socket having a fluid passage in its axial center that communicates with the fluid passage of the socket, one end of which is fitted with the plug part of the first socket, and the circumferential groove of the plug part. A non-valve body having a ball locking means for engagement, a seal ring for sealing the plug part inside, and a connecting part such as a male thread, a female thread, a hose nipple, etc. for connecting to piping or a hose at the other end. It is characterized by comprising a built-in second socket.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Reference numeral 1 designates a main body part of a first socket 35, which will be described later.An insertion tube 2 is provided at one end to be inserted and connected to a second socket 40, which will also be described later. A trunk portion 4 having a large diameter is formed. A circumferential groove 5 is formed in the central portion of the outer periphery of the body, and the insertion tube 2 and the body 4 having the circumferential groove 5 form a plug portion 6. Reference numeral 7 denotes a locking wall that is continuous with the body portion 4 and is formed to stand up in the centrifugal direction.

Inside the plug portion 6, a valve port 9 is provided at the inner end of a fluid passage 8 provided in the axial direction from the tip of the plug portion and at a position corresponding to the center portion of the main body portion 1.
Reference numeral 10 denotes a latch piece installed in the fluid passage 8, and 11 denotes a spring that has one end hooked to the latch piece 10 and the other end hooked to the back side of the valve body 12 installed in the fluid passage 8. The resilient force causes the valve body 12 to sit on the valve port 9, and a protrusion 12a provided at the tip of the valve body is made to protrude into a small diameter chamber 16, which will be described later.

32 is a socket portion integrally provided at the other end of the main body portion 1 with its axis aligned with the plug portion 6;
A storage chamber 14, which is the main part, is located inside the end of the socket part.
A small diameter chamber 16 is formed inside a tapered portion 15 that is continuous with the storage chamber. A seal ring 18 is installed in the inner circumferential groove 17 provided on the inner wall surface of the small diameter chamber, and the valve port 9 is opened at the center of a locking wall surface 19 provided continuously in the centripetal direction inside the small diameter chamber 16. . The small diameter chamber 16 provided inside this socket portion and the accommodation chamber 14 provided at the end portion collectively form an opening 20 for plug insertion,
The opening 20 communicates via a valve port 9 with a fluid passage 8 provided in the plug part 6.

A smooth surface portion 21 is formed on the outer periphery of the socket portion 32 from the end side, and a guide portion 23 having a slightly larger diameter is formed via a step portion 22 provided continuously to the smooth surface portion 21. The locking convex portion 24 formed by
is continuous with the locking wall 7. Tapered holes 25 are provided in the wall of the receiving window 14 of the socket part from the centrifugal direction at regular intervals, and a locking ball 26 having a diameter longer than the wall thickness of the wall is loosely fitted into each taper hole.

A first sleeve 27 is attached to the outer periphery of the socket portion 32 so as to be movable forward and backward, and has a smooth surface portion 21 on the inner surface of one end.
Pressing surface 2 that slides on the top and presses the locking ball 26
8, and the guide cylinder part 27a provided via the hooking part 29 formed continuously on the pressing surface 28 is connected to the first guide cylinder part 27a.
This slides the sleeve 27 in the axial direction, and springs a compression spring 30 between the stepped portion 22 of the socket portion and the hook portion 29 of the first sleeve. Further, in order to prevent the first sleeve 27 from coming off, a stop ring 31 is attached to the outer periphery of one end of the smooth surface portion 21.

The plug part 6 has the circumferential groove 5 on the outer periphery and the valve body 12 inside, and the socket part 32 has the first sleeve 27 for attaching and removing the plug on the outer periphery and has a seal ring inside. are formed into an integral structure to form a first socket 35 with a built-in valve body.

Next, the second socket 40 without a built-in valve body, which is detachably connected to the plug portion 6 of the first socket 35, will be described.A fluid passage 41 for accommodating the plug portion 6 of the first socket is provided inside the front end. A locking ball 43 is loosely fitted into a plurality of tapered holes 42 provided at regular intervals in the end circumferential wall of this fluid passage 41, and a pressure force for pressing the ball is provided on the inner surface of the tip of a second sleeve 44 that operates the ball 43. The spring 4 forms a surface 45 between a hook 46 provided at one end of the inner surface of the sleeve and a step 48 provided on the socket body 47.
A stop ring 50 is attached to the outer periphery of the front end of the socket main body 47 to prevent the second sleeve 44 from coming off. Reference numeral 51 denotes a locking portion that stops the rearward movement of the second sleeve 44, and the fluid passage 41 is connected to the piping 5 connected to the rear part of the second socket 40.
It communicates with 5.

At the rear of the second socket 40, there is provided a connecting portion 56 consisting of a female thread or a male thread for connecting a pipe 55, a hose nipple for connecting a hose, or the like. Note that a seal ring 52 is installed in a groove provided in the peripheral wall of the fluid passage 41.

Note that the sleeve can also be used to lock a ring in addition to the ball that serves as the locking means.

Furthermore, by making the inner diameter of the socket portion of the first socket different from the inner diameter of the front end of the second socket, plugs of different diameters can be connected. in this case,
The outer diameter of the plug portion of the first socket is set so that it can fit into the second socket.

Next, the operation of this embodiment will be explained with respect to the above embodiment.

The pipe joint of the present invention has an integral structure of a plug portion having a circumferential groove 5 on its outer periphery and a socket portion 32 having a sleeve on its outer periphery that is biased with advancing force by a compression spring to restrain or release the ball. A first socket 35 with a built-in valve body, a connecting portion 56 at the other end, a fluid passage 41 communicating with the fluid passage 8 of the first socket at the axial center, and a first socket 35 on the outer periphery. The second socket 40 has a ball locking means that engages with the circumferential groove 5 of the socket 35, and is equipped with a seal ring 52 for sealing the plug portion inside. As shown in FIG. 2, if the plug part 6 of the first socket 35 is removed from the fluid passage 41 of the second socket 40, the pipe can be connected between the second socket 40 and a plug (not shown) that does not have a built-in valve body. Configure the fitting. 2nd socket 40
Because it does not have a built-in valve body, it cannot be used when flowing fluids that are harmful to the human body, but it is convenient when flowing a large amount of fluid because there are few obstacles in the fluid passage 41.

When connecting a plug with a built-in valve body (not shown), if the plug portion 6 of the first socket 35 is connected to the fluid passage 41 of the second socket 40 (see Figure 1), the plug without a built-in valve body can be connected. A certain second socket can be easily modified into a socket with a built-in valve body. in this case,
Since there is no need to use tools such as spanners, changes can be made easily. Therefore, the consumer does not have to keep a large number of sockets of different types, which is economical and does not require a lot of storage space.

The present invention has the following effects.

There are three types of second sockets: one with a male thread type, one with a female thread type, and one with a hose nipple type.
Even if the socket does not have a built-in valve body, the first socket can be easily connected and separated from the second socket.
Since the socket has a built-in valve body, it is possible to easily change a socket without a valve body to a type with a built-in valve body. There is no need to have a separate built-in socket, and there is no need to use tools such as spanners when replacing, so work efficiency can be significantly improved.

The connection part of the second socket part varies depending on the diameter and diameter of the pipe and hose. Therefore, by configuring the connection part of the second socket part according to these dimensions, it is possible to connect to pipes and hoses of different diameters. In such a case, the second socket, which is considerably cheaper than the first socket, can be easily prepared in the dimensions to be used depending on the purpose of use.

By using a circumferential groove provided on the outer periphery of the plug portion of the first socket and locking a locking member such as a ball of the second socket, the first and second sockets can be easily rotated relative to each other. Can be connected.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view showing a state in which the pipe joints are connected, and FIG. 2 is a longitudinal cross-sectional view showing the state in which the pipe joints are separated. 5... Circumferential groove, 6... Plug portion, 8, 41...
Fluid passage, 12... Valve body, 18, 52... Seal ring, 20... Opening, 26... Locking ball,
27, 44...Sleeve, 32...Socket part,
35...first socket, 40...second socket.

Claims (1)

[Scope of utility model registration request] A plug part having a circumferential groove on the outer periphery, a socket part having a sleeve on the outer periphery to which advancing force is applied by a compression spring, and a locking ball to be restrained or released by the sleeve are aligned so that their axes coincide. It has an integral structure, and has an opening for installing the plug in the socket part that communicates with the fluid passage of the plug part, and a seal ring that seals the inserted plug in the opening, and a seal ring that seals the inserted plug. A first socket with a built-in valve element is provided in the passageway and has a valve element that opens against the elastic force of the spring due to the pressing force from the opening side, and the first socket communicates with the fluid passage of the socket at the axial center. It has a fluid passage, and has ball locking means at one end that is mutually fitted with the plug part of the first socket and engages with the circumferential groove of the plug part, and seals the plug part inside. A pipe joint comprising a seal ring and a second socket without a built-in valve body, the other end of which is provided with a connection part such as a male thread, a female thread, or a hose nipple for connection to piping or a hose.