JP2933257B2 - Rubber ring joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber ring joint, and more particularly to a rubber ring joint used for, for example, water supply piping.

[0002]

2. Description of the Related Art A conventional rubber ring joint 1 shown in FIG.
It includes a receiving port 4 having a rubber ring receiving portion 3 for receiving the rubber ring 2, and an end of a pipe 5 to be joined to the receiving port 4 is inserted.

[0003]

In the above-mentioned prior art,
The inner surface of the receiving port 4 and the outer surface of the pipe 5 are sealed by the rubber ring 2. However, if the mounting position of the rubber ring 2 is shifted, sufficient waterproofness cannot be obtained, and water leakage or the like may occur. is there. Therefore, conventionally, it is necessary to insert a check gauge between the receiving port 4 and the pipe 5 and insert the pipe 5 into the receiving port 4 while confirming that the rubber ring 2 is mounted at an appropriate position. However, there is a problem that workability is poor.

[0004] Therefore, a main object of the present invention is to provide a rubber ring joint which can improve workability.

[0005]

According to a first aspect of the invention is a rubber ring bonded joint comprising a receptacle having a rubber wheel receiving portion, forming a hole penetrating the rubber ring receiving portion in the peripheral wall of the receptacle, rubber Wheel bearing
A rubber ring joint joint characterized by mounting a rubber ring on a container. A second invention provides a rubber ring joint having an end, a ring receiving portion, a partition and a rubber ring receiving portion formed in this order from a pipe end side. If, while a distal end inner diameter of the rubber ring that will be mounted in the rubber ring receiving portion in the same size, the peripheral wall of the receptacle
A rubber-ring joint is characterized in that a hole is formed in the rubber-ring receiving portion .

[0006]

According to the first aspect of the present invention, the mounting state of the rubber ring can be easily confirmed visually or the like from the hole penetrating the rubber ring receiving portion formed on the peripheral wall of the receiving port. In the second invention,
The pipe inserted into the receptacle can be centered by the inner surface of the end of the receptacle and the inner surface of the partition wall. Further, since the inner diameter of the tip of the rubber ring and the inner diameter of the partition wall are the same size, the tip of the pipe does not directly hit the tip surface of the rubber ring. Therefore, there is no problem that the end of the pipe pushes the rubber ring to shift the rubber ring. In addition, formed on the peripheral wall of the socket
The mounting state of the rubber ring from the hole
It can be easily confirmed by visual inspection or the like.

[0007]

According to the present invention, workability can be improved. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
Includes a pipe body 12. A receiving port 14 is formed at an end of the pipe body 12, and a rubber ring receiving section 16 is formed on an inner peripheral surface of the receiving port 14. A plurality of holes 18 penetrating through the rubber ring receiving portion 16 are formed on the peripheral wall of the receiving port 14 so as to be distributed in the circumferential direction. The rubber ring 20 is mounted on the rubber ring receiving portion 16.

At the time of joining, the pipe 22 to be joined is inserted into the receiving port 14 while visually checking the mounting state of the rubber ring 20 from the hole 18 or using a check gauge or the like (not shown). If the mounting position of the rubber ring 20 shifts due to the tip of the pipe 22 pressing the rubber ring 20 or the like, the pipe 22 is pulled out, the rubber ring 20 is returned to an appropriate position, and the pipe 22 is inserted again. .

According to this embodiment, the rubber ring 2 is
Since the mounting state of 0 can be easily checked visually or by a check gauge or the like, workability can be improved. The rubber ring joint 24 of another embodiment shown in FIGS. 2 and 3 includes a pipe body 26. At the end of the pipe body 26, a socket 28
Are formed, and an end portion 30, a ring storage portion 32, a partition wall 34, and a rubber ring receiving portion 36 are formed on the inner peripheral surface of the receiving port 28 from the tube end side. A plurality of holes 38 penetrating the rubber ring receiving portion 36 are formed in the peripheral wall of the receiving port 28 in a circumferential direction, and a hole 40 penetrating the ring housing portion 32 is formed extending in the circumferential direction. . Then, a separation prevention ring 42 and a rubber ring 44 are attached to the ring storage portion 32 and the rubber ring receiving portion 36, respectively. The detachment prevention ring 42
The inner peripheral portion of the separation prevention ring 42 is formed in a substantially C shape by a metal such as stainless steel. It is formed in a sawtooth shape. The minimum inner diameter of the end portion 30 and the inner diameter of the partition wall 34 are the same as the inner diameter of the distal end portion of the rubber ring 44 mounted on the rubber ring receiving portion 36. Further, a locking projection 48 (FIG. 3) for locking one end when the diameter of the separation preventing ring 42 is expanded is formed near the circumferential end of the hole 40 on the inner surface of the ring storage portion 32.

At the time of joining, a pipe 46 to be joined to the receiving port 28 is inserted while checking the mounting state of the rubber ring 44 from the hole 38. At this time, since the pipe 46 is centered by the inner surface of the end portion 30 and the inner surface of the partition wall 34,
Can be inserted straight into the rubber ring 44. Further, since the inside diameter of the tip of the rubber ring and the inside diameter of the partition wall are the same size, the tip of the pipe 46 does not directly hit the tip surface of the rubber ring 44. Therefore, there is almost no problem that the tip of the pipe 46 pushes the rubber ring 44 to shift the rubber ring 44. Still, when the mounting position of the rubber ring 44 is shifted, as shown in FIG.
0, the diameter of the separation prevention ring 42 is expanded,
The pipe 46 is pulled out with the separation prevention ring 42 separated from the outer surface of the pipe 46. Then, after returning the rubber ring 44 to an appropriate position, the insertion of the pipe 46 is performed again.

After joining the pipe 46, the pipes 26 and 4
In a case where the pipe including the pipe 6 is elongated due to heating or the like, the pipe 46 is further inserted deep into the receptacle 28.
On the other hand, when the pipe is contracted due to cooling or the like, the pipe 46 is pulled out from the receiving port 28 according to the amount of contraction. When the pipe 46 is pulled out, the separation prevention ring 4
2 moves in the ring storage section 32 in the axial direction,
Is pulled out by a certain length, the separation prevention ring 42 comes into contact with the tapered surface of the ring storage portion 32. When the pipe 46 is to be further pulled out, the detachment prevention ring 42 is reduced in diameter by the tapered surface, and the inner peripheral portion having a substantially saw-tooth cross section bites into the outer peripheral surface of the pipe 46. Therefore, the pipe 46 is not drawn out any further.

Also in this embodiment, since the mounting state of the rubber ring 44 can be easily checked from the hole 38 visually or by a check gauge or the like, workability can be improved.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is an illustrative view showing another embodiment of the present invention;

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is an illustrative view showing a conventional technique;

[Description of Signs] 10 ... Rubber ring joint 12,26 ... Pipe 14,28 ... Receptacle 16,36 ... Rubber ring receiving part 18,38,40 ... Hole 20,44 ... Rubber ring 30 ... End 32 ... Ring Storage part 34 ... Partition wall 42 ... Separation prevention ring

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroaki Sakamoto 64 Ishizu-Kitacho, Sakai-shi, Osaka Inside the Kubota Vinyl Pipe Plant (72) Inventor Takashi Kosugi 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Vinyl Co., Ltd. (56) References JP-A-53-37911 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16L 21/02 F16L 21/08

Claims (2)

(57) [Claims] 1. A rubber ring bonded joint comprising a receptacle having a rubber wheel receiving portion, forming a hole penetrating the rubber ring receiving portion in a peripheral wall of the socket, the rubber ring on the rubber ring receiving portion A rubber-joint joint, characterized by being mounted . 2. A rubber ring joint having an end, a ring receiving portion, a partition, and a rubber ring receiving portion formed in this order from a pipe end side . and an inner diameter, a distal end inner diameter of the rubber ring rubber ring that will be attached to the receiving unit with the same size, the rubber ring receiving portion in a peripheral wall of said receptacle
A rubber ring joint, wherein a through hole is formed .