JP2001099337A - Joint integrated ball type stop cock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint integrated ball type stop cock capable of connecting different kinds of tubes with a simple connecting work. SOLUTION: This joint integrated ball type stop cock is formed of a cock main body 1 and joint parts 2, 3 in both sides. In the cock main body 1, a ball cock body 12 is arranged in a main body barrel 11, and a flow passage is opened and closed by turning the ball cock body at 90 degree. One joint 2 has an inner surface formed into a tooth surface 25, and has a sleeve 23 having a diameter to be enlarged and shrunken and, the joint 2 is used to join vinyl chloride tubes. The other joint 3 has an inner surface provided with multiple balls 36 embedded at a depth of a half diameter of the ball 36, and has a retainer 34 having a diameter to be enlarged and shrunken, and the joint 3 is used to join stainless steel tubes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a ball water stopcock with an integral joint mainly used for a water pipe.

[0002]

2. Description of the Related Art A ball type water stopcock is a water stopcock which uses a ball-shaped plug and rotates the plug by 90 ° to open and close a flow path. Conventionally, there are many types of water stopcocks of this type, and various types of water stopcocks in various forms in which a plug body and a joint thereof are improved are proposed.

[0003]

However, the conventional ball type water stopcock has a problem in its joint portion. That is, there is no proposal that can connect different types of pipes, for example, a vinyl chloride pipe and a stainless steel pipe, to the joints on both sides. In addition, for the connection, some processing is required on the pipe end. Therefore, the conventional ball type water stopcock has a drawback that the workability at the time of piping construction is poor and the construction cost is high. In addition, since the connection strength is low, if an external force is applied during use, the pipe may easily come off.

[0004] In view of the above, the present invention can connect different types of pipes to the joints on both sides, does not require any processing on the pipes, and can easily connect the pipes simply by inserting the ends of the pipes. An object of the present invention is to provide a body ball type water stopcock. Another object of the present invention is to provide a joint-integrated ball type water stopcock which can easily and firmly connect a vinyl chloride pipe to one side and a stainless steel pipe to the other side. Still another object of the present invention is to provide a joint-integrated ball type water stopcock which can easily connect and disconnect tubes.

[0005]

The technical means of the joint-integrated ball type water stopcock according to the present invention is provided on a stopper body in which a ball stopper is accommodated in a body body, and on both sides of the stopper body. It consists of two joints, one of which has a tooth surface on the inner surface,
A joint in which a sleeve whose diameter can be expanded and contracted is pressed against the outer surface of the tube, and the other joint portion has a large number of balls provided on the inner surface and a retainer whose diameter can be expanded and contracted is pressed against the outer surface of the tube. It is to be.

[0006] Further, one joint portion is connected to a socket of the main body body,
It is composed of a sleeve retainer screwed into this receptacle, a sleeve that comes into contact with this sleeve retainer on a tapered surface, and a packing fitted at a position deep inside the receptacle, and the sleeve is formed in a ring shape having a cut at one place. At the same time, the inner surface is a tooth surface,
Preferably, when the sleeve retainer is tightened into the socket, the sleeve is pushed deeper into the tapered surface, reducing the diameter of the sleeve so that the tooth surface is pressed against the outer surface of the tube.

Furthermore, a ball retainer screwed into the body of the other joint portion, a packing fitted into the open end of the ball retainer, a cap nut screwed into the end of the ball press, a cap nut and a taper When the retainer is configured with a large number of balls on the inner surface of a ring having a split at one position, and the cap nut is tightened,
The retainer is pushed deeper into the tapered surface, reducing the diameter,
The ball may be pressed against the outer surface of the tube.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a ball water stopcock with an integral joint according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the ball type water stopcock of the embodiment comprises a plug body 1 and joints 2 and 3 on both sides thereof. First, the plug main body 1 will be described. A ball plug 12 is housed inside a main body 11 constituting an outer shell of the plug main body 1.
The ball stopper 12 is provided with a handle 13. By turning the handle 13, the ball stopper 12 rotates inside the main body 11. Since the water hole 14 is formed in the ball stopper 12 in a penetrating manner, the water passage is opened and closed by rotating the water hole 90 °. In addition, ball stopper 1
2 is sandwiched between synthetic resin ball sheets 15 and is held in position by a ball presser 16. In addition, the ball presser 16
Is screwed and fixed to the main body 11.

Next, of the two joints, the joint 2 for connecting the vinyl chloride pipe A will be described. As shown in FIGS. 1 and 2, a packing 21, a washer 22, and a sleeve 23 are fitted into the inside of the receptacle 20 of the main body body 11 in order from the back. The packing 21 is made of synthetic rubber having appropriate elasticity, and the washer 22 is made of hard synthetic resin. The shape of each of the packing 21 and the washer 22 is a complete ring. The sleeve 23 is made of a metal such as a copper alloy, and has a ring shape. However, the sleeve 23 has a slit 24 at one location, and the diameter of the ring can be expanded or reduced. Further, the inner surface of the sleeve 23 is a tooth surface 25 for preventing slippage, and the outer surface of the sleeve 23 is a tapered surface 26.

The inner surface of the sleeve retainer 27 has a tapered surface 28
Are formed. The inclination angle of the tapered surface 28 is the same as that of the tapered surface 26 of the sleeve. Accordingly, when the sleeve presser 27 is screwed into the inner surface of the receiving port 20, the two tapered surfaces 26 and 28 come into contact with each other, and the sleeve 23 is pushed toward the inner side of the receiving port and is reduced in diameter. On the other hand, the packing 21 is compressed by receiving a force from outside,
It tightly adheres to the inner surface of the receiving port 20 and the outer surface of the pipe A, and prevents water leakage from these gaps. Further, as the diameter of the sleeve 23 is reduced, the friction surface 25 on the inner surface of the sleeve 23 is pressed against the outer surface of the tube A and bites, thereby preventing the tube A from coming off. As shown in the figure, O-rings 29 are attached to the inner and outer surfaces of the sleeve retainer 27.

Since the joint 2 has the above structure,
In the connection operation of the tube A, first, the threaded state of the sleeve retainer 27 is loosened, and the end of the tube A is inserted into the receiving port 20. At this time, since the diameter of the sleeve 23 is expanded and no external force acts on the packing 21, there is no resistance to the insertion of the tube A, and the tube A can be easily inserted.
After the tube A is completely inserted, the screwing of the sleeve presser 27 is tightened. As a result, as described above, the packing 21 is compressed, the sleeve 23 is reduced in diameter, and a water leakage preventing action and a pull-out preventing action are generated. When the connected tube A is once removed, the screw of the sleeve presser 27 is first loosened. As a result, the sleeve 23 expands and the packing 2
Since the compressive force acting on 1 is eliminated, the tube A can be easily pulled out.

As described above, the pipe A connected to the joint 2 does not require any processing on the pipe end. Therefore, the operation of connecting the tubes is extremely simple. The type of the pipe A is not particularly limited, and a rigid vinyl chloride pipe for water supply is most suitable, but connection with other synthetic resin pipes or metal pipes such as steel pipes and copper pipes is also possible.

Next, the joint 3 on the side connecting the other stainless steel tube B will be described. As shown in FIGS. 1 and 3, the joint 3 is attached to a ball retainer 16. The ball retainer 16 has a substantially cylindrical shape, and the tube B is inserted into the inside thereof. A tapered surface 30 is formed at the open end of the ball retainer 16, and a packing 31 made of synthetic rubber is fitted therein. Also, the ball presser 16
A cap nut 32 is screwed into the end of the cap. A tapered surface 33 is formed on the inner surface of the cap nut 32, and the retainer 3
4 is fitted. The retainer 34 has a structure in which a number of balls 36 are provided in a semi-buried state on the inner surface of a ring 35 made of a synthetic resin. Further, the ring 35 is provided with a cut 37 at one position, and the diameter can be expanded and contracted.
The outer surface of the ring 35 is a tapered surface 38,
The inclination angle is the same as that of the tapered surface 33. Reference numeral 39 denotes a washer, which is disposed between the retainer 34 and the packing 31.

Since the joint 3 has the above-described structure, first, the packing 3 is attached to the tapered surface 30 of the ball retainer 16.
1 and the washer 39, while the retainer 34 is fitted on the tapered surface 33 of the cap nut 32, and the cap nut 32 is screwed to the end of the ball retainer 16. Next, the pipe B is inserted with the cap nut 32 loosened. Retainer 34 and packing 3
Since 1 is in the expanded state, there is no resistance in inserting the tube B. After the pipe is inserted, when the cap nut 32 is tightened, the retainer 34 and the packing 31 are pressed against each other, and are pushed in the diameter reducing directions of the tapered surfaces 33 and 30, respectively. As a result, the retainer 34 is reduced in diameter and the ball 36 is strongly pressed against the outer surface of the tube B. In the case of a thin tube such as a stainless steel tube, the tube wall is depressed and the ball 36 is deformed.
The tube B bites into the tube wall, and the tube B is firmly held and does not easily come out. In addition, packing 3
1 is compressed and comes into tight contact with the outer surface of the tube and the tapered surface, so that water leakage from this portion is completely prevented. When the connected tube B is once pulled out, first, the cap nut 32 is loosened. Thereby, the retainer 34
And the packing 31 expands and loses the tube holding force.
The tube B can be easily pulled out.

Since the connection at the joint 3 is performed as described above, no processing is required for the pipe B. As the type of the pipe B connected to the joint portion 3, a stainless steel pipe is most preferable.
If the tube is made of a soft material, it can be connected, for example, a copper tube can be connected.

The present invention is not limited to the above embodiment, but can be freely modified and implemented within the scope of the claims. In particular, the detailed structure of the plug body 1 and the two joint parts 2, 3 is free.

[0017]

In the joint type ball stopcock according to the present invention, the joints on both sides are provided with different kinds of joints for connecting to different pipes. For example, a PVC pipe and a stainless steel pipe are connected on both sides. Because it can be connected to the pipe, it is possible to efficiently perform the pipe construction. In addition, since both joints are of the type in which the sleeve or the retainer is reduced in diameter and the tooth surfaces and balls are pressed against the outer surface of the tube to fix and hold the tube, no processing is required on the tube. Yes, the connection work is simple, and a strong connection is possible. Further, at each joint, the pipe can be fixedly held and released only by turning the sleeve retainer or the cap nut, so that the pipe connecting and extracting work is extremely simple.

According to the second aspect of the present invention, the sleeve moves toward the back of the tapered surface and is reduced in diameter by the tightening of the sleeve retainer. In addition to holding firmly, compressive force can be applied to the packing. For this reason, rigid PVC pipes for water supply can be easily connected, and the fixed holding force after connection is high, so that even if external force acts during use, the pipe does not come off,
In addition, no water leakage occurs at the connection part.

According to the third aspect of the present invention, when the cap nut is tightened, the retainer moves toward the back of the tapered surface and is reduced in diameter, whereby the ball of the retainer is strongly pressed against the outer surface of the tube, and Since the pipe is cut into the wall, the pipe can be firmly fixed and held, and the packing can be compressed to prevent water leakage. For this reason, a stainless steel pipe for water supply can be easily connected, and it is possible to prevent escape or water leakage during use.

[Brief description of the drawings]

FIG. 1 is a half cross-sectional view of an embodiment of a ball stopcock with an integral joint according to the present invention.

FIG. 2 is an exploded sectional view of one joint.

FIG. 3 is an exploded sectional view of the other joint part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug main body 2, 3 Joint part 11 Main body 12 Ball plug 13 Handle 16 Ball retainer 20 Receptacle 21 Packing 22 Washer 23 Sleeve 24 Split 25 Tooth surface 26, 28 Tapered surface 27 Sleeve retainer 30, 33, 38 Tapered surface 31 Packing 32 Cap nut 34 Retainer 35 Ring 36 Ball 37 Groove 39 Washer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Sadao Fujita 3-10-18 Ikunohigashi, Ikuno-ku, Osaka City F-term in the Komei Seisakusho Co., Ltd. (Reference) 2D060 AC03 BB07 3H051 AA07 BB03 CC15 FF02 3H054 AA03 BB30 GG02

Claims (3)

[Claims] 1. A plug body in which a ball plug is housed in a main body, and two joints provided on both sides of the plug main body, wherein one joint has an inner surface with a tooth surface and a diameter. Is a type of joint in which the expandable and contractible sleeve is pressed against the outer surface of the tube, and the other joint portion is provided with a number of balls on the inner surface,
A joint-integrated ball type water stopcock, which is a type of joint that presses a retainer whose diameter can be freely expanded and contracted onto the outer surface of the pipe. 2. One of the joints is fitted into a socket in the main body, a sleeve press screwed into the socket, a sleeve in contact with the sleeve press by a tapered surface, and a position deep in the socket. The sleeve is in the form of a ring with a slit at one location, and its inner surface is a tooth surface. When the sleeve retainer is tightened into the socket, the sleeve is pushed deeper into the tapered surface. 2. The joint-integrated ball type water stopcock according to claim 1, wherein the diameter is reduced so that the tooth surface is pressed against the outer surface of the pipe. 3. A ball retainer screwed into the body of the main body, a packing fitted into an open end of the ball retainer, a cap nut screwed into an end of the ball press, a cap nut, and a tapered nut. The retainer is made up of a number of balls provided on the inner surface of a ring with a slit at one point. When the cap nut is tightened, the retainer is pushed deeper into the tapered surface and 2. The joint-integrated ball type water stopcock according to claim 1, wherein the diameter of the ball is reduced so that the ball is pressed against the outer surface of the pipe.