JPS5950291A - Flexible joint for pipe joint - 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 The present invention relates to a 7 lexipul joint such as a humuum W to be buried underground. The joints for underground water tanks, etc. are of the two types, as shown in Figure 1: the FA-type pipe connection (hereinafter referred to as FA type), and the socket-type connection of male and female pipes as shown in Figure 2. (hereinafter referred to as type B). This type of A81 and B type joints are connected at the bottom)
For ffl construction, in the case of type A shown in Figure 1, a concrete collar t is placed at the joint of the straight pipe body a1a, and mortar material m is filled between the pipe bodies and the joint part is connected. In the case of the B-claw, as shown in Fig. 2, a female pipe bt to be connected to the pipe body a is fitted, and an elastic packing pft is fitted in the fitting part. However, with the above-mentioned joint structure, due to earthquakes, uneven ground due to soft ground at the construction site, etc., the fitting pipes may become centered, the joint may pull out or fall, or the pipes, including the joint, may be bent. There was also one point in the body that was susceptible to cracks and damage, which could lead to water leakage. For example, Iai ψ of the A-shaped mouth in Figure 1, power? Since it is mounted on a joint structure consisting of -1 and mortar material M, it is hard, but on the other hand, it is prone to cracks due to bending action, and B in Fig. 2.
In the case of molded pipes, in order to prevent the tightly fitted rubber seal P from slipping or falling out, it is possible to make the socket wb very deep, for example, but due to manufacturing There were four points in which the water supply effect could not be fully exerted because the structure could not exceed the permissible limit. In addition, a cylindrical joint member for type A using an elastic material is also known, but the housing is easy to remove and the water-stopping effect is higher than tJ of 1.
Points are awarded.

This invention is a method for joining the joints described above, which is known as a joint or backing structure. The object of the present invention is to provide a joint structure that has flexibility and durability, and does not reduce water-stopping performance. The gist of the present invention relates to the structures set forth in claims 5 and 5. A concrete compressor according to the present invention will be illustrated and explained below.

6th v from Figure 218! Reference numeral J indicates an embodiment described in claims 1 to 4, and is a joint structure in the case of an A type in which the joint part is a nine-tooth Q body. 1 in the figure is a short circular tubular joint body made of hard rubber that fits into the barbed joint. The joint body is hard
It is more effective to use a structure containing cloth or short fibers within the rubber, as this will enhance the toughness and resistance to bending action. When making a hard rubber body containing short fibers, process waste from the tire production process 4!4 or waste tires (containing short fibers) are used.

) is advantageous in reducing processing costs. 3. Real J! r&M has made these into hard rubber. In addition to rubber, the material may be an elastic material such as plus deck. 2 is a U-shaped groove installed on the outside of the center of the joint body, which absorbs overcurrent loads and acts as a counterweight against uneven pressure and bending pressure on the joint. ! ShiLzu. 14 Width dimension is 2oI for 210 r71rTl in the breeze body in the example.
'i'' approximately 1m is appropriate. 8 is a joint convex part provided in a ring on the inner circumference of the joint body that fits J15 in the U-shaped groove, and when the position is rested, an A-shaped pipe that fits -1 on both sides of the return convex part is suitable. ASa is joined to provide the function of a-operating the extraction part of the pipe bodies. 4 is a projecting ring embedded in the horizontal direction in the joint part 1h. In this case, the mouth part a'a of the tube body is placed on the secondary surface of the edge stand convex part 1.
The pipes are pressed together in a flat manner by the bending of the tube to prevent gaps from being created in the joint due to the elastic reaction force of the soft packing when the core part separates.

The design of the soft packing may be changed as appropriate. 5.5 is a soft water-stop packing provided with an embedded protrusion on the inner periphery of the joint body 6.6 on both ends of the joint body a.
In the embodiment, the protruding portion that acts as a water stopper on the outer periphery is protruded by 1ψ in an arc shape, but the design may be modified to suit the shape of the sawtooth pond. The material rt and °C are
Natural rubber with a strong reaction force, synthetic wood, or expansion rubber that expands in volume when in contact with water may be used.
It is a corrosion-resistant and strong stainless steel ring with a high-tensile band that is forcibly fitted around the outer periphery. ? In addition to the i6 tension cover band binding, a plastic material may also be used. The band is made of paper that is slightly smaller than the outer diameter of the joint! i! 11 system taX reinforces the water-stop action of the water-stop backing 5, and also strengthens the 'lZ body of the joint body.
t (reinforcing the tightness 41 force). Figure 6 shows another example of the tension band, which is embedded in the joint book F, and when using the Kinke 14 band. The assembly has the advantage of preventing corrosion and improving durability, as well as preventing the band from falling off due to a decline in the ability of external bolts or the band itself.
In addition to the d-shaped body, one or more twisted sea lions or rondo bodies (not shown in the figure, 1.i) may be lowered or buried. 8 is U-shaped ^
The sponge outer cover that fits into the U-shaped groove prevents the U-shaped groove from becoming clogged with mud and gravel, thereby preventing the end of the U-shaped groove from becoming buffered and reducing the load-absorbing function. Therefore, if the fitting body is the above-mentioned U
Shaped groove machine IiFk Sponge that does not deteriorate k part 1
Next, we will explain the foundation of the Bf:J joint shown in Fig. 7 as a row of planted fruits as described in Section 5 of ILII of the 1st request for that soft elastic body. The 7 lexipul joint, which has a socket-shaped surface made of male RFA and female pipes, is a short cylindrical body with a step 9 provided approximately in the center of the joint body l in the 1] direction, and the step 9 has a U-shape. JJ groove 2! Set up The U-shaped groove is provided near the small-diameter end 12 of the joint body, and a soft water-stop packing 5 is embedded in a protruding ring on the inner periphery of the large-diameter end 11 of the joint body. A water-stop gasket 5 is protruded in an embedded manner on the outer periphery. The high-tension tube door is provided at the large-diameter end 11 of the joint main body in correspondence with the water-stop gasket 5, and as a means for that purpose, it is a J body similar to the case of the A-type tube described in claims 2 to a. Forcibly fit around the outside of the body, or implanted in a ring inside the body. As shown in Fig. 7, the construction means for the B-type 7-hour sipple joint of the present IA invention is as shown in Fig. 7.
Insert the male W-a into the large-diameter end it side of the joint body, and fit the female gb into the small-diameter end 12 side to form the pipe body aSb.
join. In this case, the joint end 12 is inserted into the female pipe and is tightly fitted, and the sonut portion b' of the female pipe serves as a hypertonic cover door for the joint body.

In addition, in the case of type B, the male lJa is connected to the inner periphery of the stepped part 9 of the joint body, and the female lja is connected to the side of the small-diameter mouth of the joint body to prevent collisions between the tube bodies. . The soft elastic body 8 that fits into the U-shaped groove 2 is suitably installed depending on the construction situation. The functions of the U-shaped groove water stop backing and the A tension band are the same as those of the A-type joint. As detailed above, the present invention provides a pipe body buried underground with the above-mentioned function. This is a flexible joint used in joints.The short circular tubular joint body is made of 11mm hard elastic material, and the whole joint has an elastic function that follows compression, tension, deformation, and bending. It has a 4rm effect that prevents damage and cracks in the joint pipe body by absorbing and reducing collisions, disconnections, and bending of both sides of the joint and mating pipe bodies, and also provides a water-stopping effect. The superior features and effects compared to the conventional fl structure are due to the novel structure of this wR invention, and if we list them, - First of all, 7 By installing a U-shaped brocade 2 around the center of the lexiple joint, the joint part can sufficiently absorb the deformation and bending pressure caused by the compressive force and tensile force applied to the body. It is much improved compared to , and does not cause unreasonable stress on either the joint body or the IF body.

Second, by forcibly fitting or embedding the high-tension cover door on the outer periphery of the end of the joint body or inside the joint body, the tight adhesion of the water-stop backing 5 to the pipe body of the joint part is strengthened to +9, and the joint body and pipe are strengthened. The joint body is expanded by the action of water pressure inside the U-shaped groove, and the joint body is expanded by the action of the water pressure inside the joint, and the water-stop backing and the body are the same. We are proud of its water-stopping effect, which completely prevents the problem of gaps in the water.

Eighth, as a construction feature of the present invention, as shown in Fig. 8, the joint of the pipe body is directly connected to the manhole 18 constructed in a fixed manner, so that the manhole and the pipe line have relatively different sinking effects, so that the pond can be easily removed. It is particularly effective as a joint for pipe fittings in areas where damage and cracks are more likely to occur than in the construction site.Fourthly, as mentioned above, the 471 construction of the joint body is made of hard rubber with short rust penetration, as in the actual example. However, if the raw materials and processed scraps from tire manufacturing and waste tires are recycled, it will not only contribute to resource conservation, but also reduce the initial production cost of unexploded products by 91%. Therefore, its economic efficiency and practicality are remarkable because it can be provided to users at a low cost.

In solving this problem, many bending tests were conducted in the section of the present invention. As a result, the water-stop gasket 5 at the end of the joint is tightened by the tightening force of the rib cage door, for example, as shown in Fig. 9.
l for a bending angle of 10 degrees for a 50φ Huume pipe joint.
Even when the water pressure inside the snowy road was applied to 9 kg, there was no leakage, and the phenomenon of water sliding around the outer circumference of the pipe and coming out was also observed.On the other hand, the U-shaped r+'92 part had the buffering and absorbing function as intended. Because of this, there was no deterioration in the water-stopping function due to bending or the like. In other words, it has been proven that the U-shaped tia and hypertonic rim construction applied to the Japan-India Foreign Office are joint products that fully demonstrate their respective functions and effects.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional ff1t diagram of type A showing the joint part of the pipe body, Figure 2
The figure is a sectional view of the B type, FIG. 8 is a sectional view showing an embodiment of the present invention used for an A type joint pipe, FIG. 4 is a sectional front view of the same, and FIG. A partially broken overall view, FIG. 6 is a sectional view of another embodiment of the high tension band, FIG. 7 is a sectional view showing another embodiment of the present invention used for a B-type joint pipe, and FIG. 8 is a sectional view of another embodiment of the present invention. On Nagiko! Usage example vLP showing the features!
Figure 9 is a cross-sectional view of the joint showing the bending test, 1 in the figure.
2 is the U-shaped n18 joint protrusion, 4 is the soft backing, 5 is the water-stop backing, 7 is the sieve cover, 8 is the sponge outer cover, 9 is the stepped part, 1
1 indicates the joint end on the large diameter side, and 12 indicates the joint end on the small diameter side, respectively. Application agent: Attorney Ishii *Figure 1, Figure 2, Figure 3, Figure 7

Claims (7)

[Claims] (1) In a circular tube-shaped elastic joint that fits into a housing joint part buried underground, 1. of the joint body made of a hard elastic material. '11 Corresponding to the joint arrow provided in the center, a U-shaped l is provided on the outer peripheral surface thereof, and corresponding to the water-stop backing embedded in the inner periphery of both ends of the joint body in a protruding manner. Flexible pull joints for R joints each characterized by a high tension band provided on the joint body. (2) Scope of Patent No. 67J: The hypertension cut described in item 1 is tightly fitted to the outer periphery of the joint body? , 7 lexi pull joint for tJ M hand. (3) Claim 1 fjlit! This is a 7 reciprocating joint for ``VF joints'', which is characterized by the above-mentioned high-tension joint being attached to the joint body. (4) A 7 lexiple joint for a pipe joint, characterized in that the U-shaped groove according to claim 1 is fitted with an elastic body within a range that does not reduce its effect. (5) In the circular tube-shaped elastic joint that fits into the tube joint part buried in JtIX, the joint body made of a hard elastic material is configured as a circular tube with all steps in the width direction from the center of the width. , a U-shaped groove is formed on the outer periphery of the stepped part, and a water-stop backing is protrudingly embedded in the inner periphery of the large-diameter end and the outer periphery of the small-diameter end of the joint, and the inner periphery of the large-diameter end is This is a 7-way shipple joint for 87 joints, which is characterized by having an rh tension cover band on the joint body in response to water-stop backing. (6) Scope of Patent Claims A 7 lexiple joint for a double-joint, characterized in that the high tension band described in item 5 is tightened and fitted around the outer periphery of the joint body. (7) A flexible pull joint for an f-joint, characterized in that the high-tension coupler described in claim 5 is installed IM in the joint body.