JPH0361788A - Fitting method for branch connecting pipe joint to ribbed pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a branch connection pipe joint in which a saddle part is provided at the proximal end of a branch pipe connection part that receives an end of a branch pipe. The present invention relates to an attachment method for attaching to a peripheral wall of a ribbed tube.

(Prior Art) Conventionally, this type of branch connection pipe joint is known, for example, as disclosed in Japanese Unexamined Patent Publication No. 151411/1983.

As shown in FIG. 12, in this pipe joint, a branch hole is bored in the peripheral wall of the ribbed pipe a, the proximal end of the branch pipe connection C is inserted into the branch hole, and the proximal end is inserted into the branch hole. A saddle portion d protruding from the outer periphery of the ribbed tube a is applied to the outer circumferential surface of the ribbed tube a, and a protrusion e protruding from the joining line of the saddle portion d is fitted between each rib f of the ribbed tube a. This prevents the formation of a gap between the joint surface of the saddle part d and the outer peripheral surface of the ribbed pipe a, and allows the branch connection pipe joint to be firmly connected to the ribbed pipe. It is.

(Problem to be Solved by the Invention) However, in the branch connection pipe joint described above, during construction, the joint surface of the saddle part d is applied to the outer circumferential surface of the ribbed pipe a to connect the saddle part d. There was an inconvenience in that the shapes of the protrusions e protruding from the joint surfaces of the tubes and the ribs f of the ribbed tube a had to be perfectly matched for connection. Furthermore, if mud, sand, or the like adheres between the ribs f, the joining surface of the saddle portion d will lift up, resulting in an inconvenience that it will not fit properly along the outer circumferential surface of the ribbed tube a.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for attaching a branch connection pipe joint to a ribbed pipe, which can easily adhere to the ribbed pipe and provide a reliable water stop. The purpose is

(Means for Solving the Problems) In order to solve the above problems, a method for attaching a branch connection pipe joint to a ribbed pipe according to the present invention is such that the attachment method of the branch connection pipe joint to the ribbed pipe according to the present invention is such that A method for attaching a branch connecting pipe fitting provided with a saddle portion to the circumferential wall of a ribbed pipe having a large number of annular ribs on the outer circumferential surface, the method comprising: attaching a branch connecting pipe joint provided with a saddle portion to a circumferential wall of a ribbed pipe having a large number of annular ribs on the outer circumferential surface, the lower surface being larger than the saddle portion of the branch connecting pipe fitting; Temporarily attach a frame member shaped to fit with the ribs of the ribbed tube and tightly contact the peripheral wall of the liquid tube to the peripheral wall so as to surround a branch hole formed in the peripheral wall of the ribbed tube; After the joining surface of the saddle portion of the branch connection pipe joint is brought into contact with the rib outer periphery of the ribbed pipe inside the frame member, a bonding agent is applied to the gap between the inner periphery of the frame member and the outer periphery of the saddle portion. It is filled and cured.

(Function) In the attachment method of the present invention, first, the frame member is brought into close contact with the outer peripheral surface of the ribbed tube so as to surround the branch hole formed in the outer peripheral surface of the ribbed tube. Next, the saddle portion of the branch connection pipe joint is brought into close contact with the rib outer periphery of the ribbed pipe inside the frame member. Next, a bonding agent is filled into the frame members through the gap between the inner circumferential edge of the frame member and the outer circumferential edge of the saddle portion, and is cured.

At this time, the bonding agent is filled into the frame member from the gap between the inner circumferential edge of the frame member and the outer circumferential edge of the saddle portion without creating a gap. Further, the outer circumferential surface of the ribbed tube and the joint surface of the saddle portion of the pipe joint are substantially bonded together with the bonding agent.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 are process diagrams illustrating a method for attaching a branch connection pipe joint 2 (hereinafter simply referred to as a pipe joint) to a ribbed pipe P.

That is, the frame member 1 is temporarily attached to the peripheral wall so as to surround the branch hole A formed in the peripheral wall of the ribbed pipe P, and then the pipe joint 2 is attached to the outer periphery of the rib R of the ribbed pipe P inside the frame member 1.
The bonding surfaces of the saddle portions 21 are brought into contact with each other, and the bonding agent 3 is filled through the gap between the frame member 1 and the saddle portion 21 and hardened.

As shown in FIG. 7, the frame member 1 includes two frame plates 11 and 11 facing each other along the circumferential direction of the ribbed tube P;
It is framed in a rectangular shape with two frame plates 12 and 12 facing each other along the axial direction.

Among these, the bottom sides of the frame plates 11.11 that face each other along the circumferential direction are curved to the same curvature as the curvature of the outer periphery of the ribbed tube P so as to follow the outer periphery of the ribbed tube P.

On the other hand, the bottom sides of the frame plates 12.12 that face each other along the axial direction are fitted with a rib R with a depth equal to the height of the rib R so as to fit into the rib R and follow the axial direction of the ribbed pipe P. Recessed portion 12a...
・are formed at the same spacing as the rib R spacing. The area of this frame member 1 is made slightly larger than the area of the saddle portion 21 of the pipe joint 2. The frame member 1 can be made of various materials such as plastic, metal, and paper.

Note that the frame member 1 is not limited to the rectangular frame as described above, and when the frame member 1 is temporarily attached to the ribbed tube P, there is a saddle portion 21 on the inside of the frame member 1. Any structure may be used as long as it can form a space 10 that can be filled with the bonding agent 3 in the same area. For example, as shown in FIG. 8, a configuration may be adopted in which only the frame plates 12.degree. 12 are opposed along the axial direction of the ribbed tube P. In this case, the space 10 can be formed by the frame plate 12° 12 and the ribs R. Moreover, when the outer periphery of the saddle part 21 is circular,
It is preferable to have a circular configuration as shown in FIG.
It may also be formed in accordance with the outer peripheral shape of the saddle portion 21, such as a seed circular shape or a polygonal shape.

The pipe joint 2 includes a saddle part 21 made of synthetic resin that is curved so as to roughly follow the outer circumference of the ribs of the ribbed pipe P, and a branch pipe connection part 23 that is fitted into a sleeve 22 that protrudes from the saddle part 21. It is composed of

The saddle portion 21 is curved approximately along the outer periphery of the rib R as described above, and is curved so as to be in close contact with the rib R and to ensure water stoppage at the outer periphery of the rib R. It is desirable that the inner diameter is the same as or slightly smaller than the outer diameter of the rib R.

The branch pipe connection part 23 has one end formed as a socket part 24 for receiving the end of a branch pipe (not shown), and the other end edge formed in an arc shape having a curvature approximately equal to the inner diameter of the ribbed pipe P. has been done. The branch pipe connecting portion 23 configured as described above is installed and fixed within a sleeve 22 that is provided protruding from the substantially central portion of the saddle portion 21, and protrudes below the saddle portion 21. In addition,
In this embodiment, this branch pipe connection part 23 is made separate from the saddle part 21 and is fixedly installed in the sleeve 22 of the saddle part 21, but it may be formed integrally with the saddle part 21.

Next, the attachment method according to the present invention will be explained.

First, a branch hole A is formed at a predetermined location of the ribbed pipe P, as shown in FIGS. 1 and 2.

Subsequently, after fitting the lip fitting recesses 12a of the frame member 1 to the ribs R of the ribbed pipe P and temporarily attaching them, the lip R of the ribbed pipe P inside the frame member l is As shown in FIGS. 3 and 4, the saddle portion 21 of the pipe joint 2 is brought into close contact with the pipe joint 2, and the branch pipe connection portion 23 of the pipe joint 2 is fitted into the branch hole A of the ribbed pipe P.

Next, from the gap between the inner peripheral edge of the frame member 1 and the outer peripheral edge of the saddle part 21, a space is formed between the frame member 1 and the saddle part 21, as shown in FIGS. 5 and 6. 1
0 is filled with bonding agent 3. As the bonding agent 3, epoxy-based, urethane-based, silicone-based, etc. are preferably used. Further, it is preferable to fill the bonding agent 3 in excess so that the space 10 is sufficiently filled. Note that between each fitting recess 12a of the frame plates 12, 12 of the frame member 1, there is a
If a confirmation hole 13 is provided as shown in the figure or a confirmation groove 14 is provided as shown in FIG. The bonding agent 3 will leak out from the groove 14, so that it can be confirmed whether or not the bonding agent 3 is sufficiently filled. Further, in order to prevent the bonding agent 3 from leaking into the ribbed pipe P, a seal ring 4 may be interposed between the branch pipe connection part 23 and the branch hole A.

When the filling of the bonding agent 3 is completed as described above, the bonding agent 3 protruding from the gap between the inner peripheral edge of the frame member 1 and the outer peripheral edge of the saddle portion 21 is wiped off, and the bonding agent 3 is sufficiently hardened. , this completes the work. Note that after the bonding agent hardens, the frame member 1 may be removed or may remain fixed together with the bonding agent 3.

In the present invention, as described above, it is not necessarily necessary to fill the space 10 with the bonding agent from the gap between the inner circumferential edge of the frame member 1 and the outer circumferential edge of the saddle portion 21, but instead to fill the bonding agent between the inner circumferential edge of the frame member 1 and the saddle portion It is sufficient that only the gap between the outer circumferential edge of 21 and the outer circumferential edge of 21 is closed with the bonding agent.

In the above, the outer peripheral surface of the ribbed pipe P and the inner surface of the saddle part 21 are as follows.
It is essentially bonded by the bonding agent 3, and if there are variations in the shape of the ribbed pipe P or the inner surface of the saddle part 21 of the pipe joint 2, or if there is mud or sand on the surface of the ribbed pipe P. Even if it is attached, sufficient water-stopping properties are ensured.

(Effects of the Invention) As described above, according to the attachment method of the present invention, the saddle is fixed by the bonding agent filled in the gap between the inner circumferential edge of the frame member and the outer circumferential edge of the saddle portion in the frame member. Since the water path existing on the inner periphery of the tube and the outer periphery of the ribbed tube is closed, sufficient water-stopping properties can be ensured.

In addition, since the outer circumferential surface of the ribbed tube and the joining surface of the pipe fitting are essentially glued together using a bonding agent, there are variations in the shape of the knobbed tube and the inner surface of the saddle of the pipe fitting. Even if mud, sand, etc. adhere to the surface of the ribbed pipe,
Sufficient water-stopping properties can be ensured without creating gaps.

[Brief explanation of drawings]

1 to 11 show an embodiment of the method of attaching a branch connection pipe joint to a ribbed pipe according to the present invention, FIG. 1 is a front view showing how the frame member is attached, and FIG. 3 is a front view showing how the branch connection pipe joint is installed, FIG. 4 is a side view of the same, and FIG. 5 is a partially cutaway front view showing the state after construction.
Fig. 6 is a partially cutaway side view of the same part, Fig. 7 is a perspective view showing the frame member, Fig. 8 is a perspective view showing a modified example of the frame member, and Fig. 9 is a circular cross-sectional view of the frame member used in the circular saddle. FIG. 10 is a front view showing a confirmation hole formed in the frame plate of the frame member, FIG. 11 is a front view showing a confirmation groove temporarily formed in the frame of the frame member, and FIG. 12 is a conventional example. FIG. 1...Frame member 10...Space 11...Frame plate work 2...Frame plate 12a...Rib fitting recess 13...Confirmation hole 14...Confirmation groove 2...Branch Connection pipe joint 21...saddle part (joint surface) 22...sleeve 23...branch pipe connection part 3...bonding agent P...ribbed pipe R...annular rib A...branch hole

Claims (1)

[Claims] 1) A branch connection pipe joint in which a saddle part is provided at the base end of a branch pipe connection part that receives an end of a branch pipe is attached to the peripheral wall of a ribbed pipe having a large number of annular ribs on the outer peripheral surface. A method for attaching a frame member, the frame member being larger than the saddle portion of the branch connection pipe joint and having a shape in which a lower surface fits into a rib of the ribbed pipe and comes into close contact with the peripheral wall of the pipe. temporarily attached to the circumferential wall of the ribbed pipe so as to surround a branch hole formed in the circumferential wall, and the joint surface of the saddle portion of the branch connection pipe joint is brought into contact with the rib outer periphery of the ribbed pipe inside the frame member. Thereafter, a bonding agent is filled in the gap between the inner peripheral edge of the frame member and the outer peripheral edge of the saddle portion, and the adhesive is cured.