JPH0424235Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention relates to pipe joints, and specifically allows corrugated pipes such as drainage pipes and communication cable pipes to be easily connected underground. Regarding pipe fittings for corrugated pipes.

(b) Prior Art Examples of pipe joints for corrugated pipes include the following pipe joints. In other words, the pipe joint is made by bending a rectangular body plate into an arc shape, forming bent pieces at opposite ends, and fastening these bent pieces with bolts and nuts, whereby the body plates are butted together. It is wrapped around both parts of a pair of corrugated pipes, and the two corrugated pipes are hermetically joined. In addition, a sealing material (ring-shaped packing) is usually interposed in the gap between both corrugated pipes and the body plate, thereby increasing the degree of sealing of both corrugated pipes.

(c) Problems that the invention aims to solve Usually, drainage pipes must be connected at the site where they are buried in the ground. Therefore, when using the above-mentioned pipe joint to connect drain pipes, it is necessary to wrap a rectangular body plate around the corrugated pipe at the site, and then attach and tighten bolts and nuts, which makes it difficult to work in a narrow work area. This fastening work was difficult.

This invention was made in view of the above circumstances, and its purpose is to provide a pipe joint that can be easily connected on site.

(d) Means for Solving the Problems and Their Effects This invention consists of two or more divided cylindrical members that form one cylindrical body by being connected, and each divided cylindrical member has a body portion having an arcuate cross section. and a connecting part formed on the axial edge of the body, the joint part of the two pipes that are butted together is wrapped around the body with a plurality of split cylindrical members, and the pair of opposing connecting parts are fastened together with bolts. In a pipe joint that joins pipes by fastening, the pair of connecting portions include a pair of belt-shaped flanges each extending integrally from an axial edge of the body and each having at least one through hole. a member, at least one strip having a hole corresponding to the through hole of the strip flange member, a hole of the strip flange corresponding to the through hole of the strip flange member, and then a through hole of the strip flange member. at least another strip having a threaded portion for screwing a fastening bolt passing through the strip; and a strip temporary holding member capable of temporarily holding the two strips in a predetermined position on the strip flange member before fastening with the fastening bolt. It is a pipe joint consisting of.

In addition, in the above-mentioned pipe joint, the divided cylinder member has a substantially semicircular cross section and approximately 1/4 of the lower body.
Consisting of two upper trunks each having a circumferential cross section, the lower trunk and the upper trunk are connected by a universal joint provided at the axial edges of both trunks, and the upper trunk A pair of connecting parts that connect the members correspond to a pair of band-shaped collar members that extend integrally from the axial edge of the body and each have at least one through hole, and the through holes of the band-shaped collar members. at least one strip having a hole, and a threaded portion corresponding to the through hole of the strip flange member to screw a fastening bolt passing through the hole of the strip and then the through hole of the strip flange member. and a band-like temporary holding member that can temporarily hold the two band-like pieces in a predetermined position on the band-like collar member before fastening with a fastening bolt.

In other words, this idea covers the joining part of both corrugated pipes that are butted together with a split cylindrical member, and by configuring the two corrugated pipes to be joined by simply tightening the connecting parts with bolts, it can be easily joined at the work site. This allows corrugated pipe joining work to be performed easily.

(e) Examples This invention will be described in detail based on the examples shown in the figures below. Note that this invention is not limited thereby.

In FIGS. 1 to 3 and 8, the pipe joint 1 is made of synthetic resin and consists of two halves of semi-cylindrical body plates 2 and 3, and the axial edge of the body plate 2 is Connecting portions 4 and 5 are formed, respectively, and connecting portions 6 and 7 are formed at the axial edges of the body plate 3, respectively.
8a and 8b are bolts that fasten the connecting parts 4 and 6, and 9a and 9b are bolts that fasten the connecting parts 5 and 7. 10a to 10c, 11 shown in FIG.
A to 11c are reinforcing ribs of the body plate 2, and 12a and 13a shown in FIG. 1 are reinforcing ribs of the body plate 3.

The connecting portion 4 in the body plate 2 has two holes 13 and 1, as shown in the enlarged sectional view taken along the line B-B in FIG.
4, which extends integrally from the edge of the body plate 2, and extends from the body plate 2 in the horizontal direction. The connecting portion 4 is connected to the reinforcing rib 1.
It is reinforced by being connected to 0a, 10b, and 10c. Reference numerals 15 and 16 indicate metal strips having holes having approximately the same diameter as the holes 13 and 14 provided in the connecting portion 4, and portions corresponding to the holes 13 and 14 in the connecting portion 4. can be attached to each. 17 and 18 are holding members for temporarily fixing the strip 15, and 19 and 20 are holding members for temporarily fixing the strip 16. The holding members 17 and 18 are formed to protrude from the connecting portion 4 in a hook shape, and function to allow the strip 15 to be slid and attached. Note that 17a and 18a are through holes necessary for molding the holding members 17 and 18, and more specifically, when molding the hook-shaped protruding parts (especially the shape of the back part) of the holding members 17 and 18. This is a through hole for cutting out the mold. To explain in more detail, the holding members 17 and 18 are molded integrally with the connecting member 4, and the molding method thereof is as follows.
A hook-shaped tongue piece is formed, and through-holes 17a and 18b are provided to enable mold release. Note that this type of molding by die-cutting can be performed using conventionally known techniques.
Furthermore, since the holding members 17 and 18 are made of synthetic resin, they can be deformed within their elastic limits. Thereby, when the metal strip 15 is attached, it functions as a spring to facilitate the attachment, and after attachment, it acts to fix the strip 15.

Reference numerals 21a to 21c are positioning ribs, which are used to fix the strip 15 at a predetermined position on the connecting portion 4. That is, as shown in Figure 10,
The positioning ribs 21a to 21c have the purpose of connecting and reinforcing the connecting portion 4 and the body plate 2, and the purpose of connecting the holding member 17,
It is formed for the purpose of supporting the lower edge of the strip 15 held by the strip 18 and fixing the strip 15 in a predetermined position. Reference numeral 22 denotes a raised portion, which is formed to be slightly raised from the edge portion of the connecting portion 4. More specifically, the raised part 22 is formed at a height of about 1 mm from the surface of the connecting part 4, and the raised part 22 is formed at a height of about 1 mm from the surface of the connecting part 4, and the raised part 22 is formed at a height of about 1 mm from the surface of the connecting part 4.
This is to prevent it from falling off after it is held at 7 and 18. Therefore, the strip 15 is attached by sliding the strip 15 along the inner walls of the holding members 17 and 18 in the direction of the arrow M and allowing it to ride over the raised portion 22. After being attached, the strip 15 is sandwiched between the positioning ribs 21a to 21c and the raised portion 22, so that the strip 15 is held in a predetermined position.

The temporary fixing structure of the strip 16 is also the same as that of the strip 15 described above.
It is the same as the temporary fixing structure. and strip 15,
The side where 16 is attached is the side where the bolt is attached.

On the other hand, 23 and 24 are strip pieces attached to the side opposite to the bolt attachment side. strip 2
The temporary fixing structure of 3 and 24 is the same as the temporary fixing structure described above, but the holes 25 and 26 of the strips 23 and 24 are
A female thread is formed in each. Therefore, two bolts 8a, 8 are provided between the connecting portion 4 and the connecting portion 6.
b, and also attach 2 to the connecting part 5 and the connecting part 7.
By attaching the main bolts 9a and 9b, the body plate 2 and body plate 3 can be tightened without using nuts.
and can be joined. The purpose of connecting using strips in this way is that when two bolts are installed, the strip 16 of the coupling section 4 is connected to the strip 24 of the coupling section 6, and the strip 17 of the coupling section 4 is connected. Part 6
The connecting portions 4 and 6 correspond to the strips 23 of the
The purpose is to ensure that the materials are in close contact with each other over a wide surface. Therefore, with this configuration, the connection work that was conventionally performed using a large number of bolts and nuts can be reduced to just two.
This can be done easily using just a bolt. Note that FIGS. 9 and 10 are assembly diagrams showing the bolt attachment method.

FIG. 4 is a perspective view showing the above-described pipe joint 1 in use. In the figure, 30 is one corrugated pipe, and 31 is the other corrugated pipe.
The pipe joint 1 is wrapped around the joint parts of two corrugated pipes that are butted against each other, and bolts 8a, 8 are attached to the connecting parts.
b, 9a and 9b are screwed together.

In the embodiment shown in FIGS. 5 and 6, the pipe joint 40 includes one lower body plate 41 having an approximately semicircular cross section and two lower body plates 41 having an approximately quarter circumferential cross section. It is composed of upper body plates 42 and 43, and a lower body plate 41.
The connecting portion between the lower body plate 41 and the upper body plate 42 and the connecting portion between the lower body plate 41 and the upper body plate 43 are connected by universal joints 44 and 45. The universal joint 44 is connected to the body plate 41
A boss 46 arranged in the axial direction of the lower body plate 41
It is comprised of a plurality of support members 47 that extend from the upper body plate 40 and engage with the boss 46, and a plurality of support members 48 that extend from the upper body plate 40 and engage with the boss 46. The structure of the universal joint 45 is the same as that of the universal joint 44.

Furthermore, the structure of the connecting parts 49 and 50 is approximately the same as that of the connecting parts 4 and 6 of the pipe fitting 1 explained in FIG.
2a, 52b, and 52c, and are formed to have a predetermined length. Note that 56 and 57 are connecting portions 4
This is a bolt for fastening parts 9 and 50.

FIG. 7 is a perspective view showing the state in which the above-mentioned pipe joint 40 is used. In the figure, 54 is one corrugated pipe, and 55 is the other corrugated pipe. The pipe joint 40 is wrapped around the joint portion of two butted corrugated pipes, and a bolt 5 is attached to the connecting portion.
6,57 is attached.

(f) Effects of the invention According to this invention, it is possible to connect both corrugated pipes by simply covering the joined parts of corrugated pipes that are butted together with split cylindrical members and tightening the joints with bolts, which makes it possible to connect the two corrugated pipes, especially in narrow work sites. Corrugated pipe joining work can be easily performed.

[Brief explanation of the drawing]

Figure 1 is a side view showing an embodiment of this invention, Figure 2 is a side view showing an embodiment of this invention.
The figure is a plan view of Fig. 1, Fig. 3 is an enlarged cross-sectional view for explaining the structure of the connecting part in Fig. 2, Fig. 4 is a perspective view for explaining the usage state of the embodiment, and Fig. 5 is this. FIG. 6 is a side view showing the second embodiment of the invention, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is a perspective view illustrating the state of use of the second embodiment. FIG. 8 is a sectional view taken along the line C--C in FIG. 2, and FIGS. 9 and 10 are assembly diagrams showing the bolt attachment method of the embodiment. 1... Pipe joint, 2, 3... Split tube member, 4, 5
... Band-shaped collar member, 15, 16, 23, 24... Band-shaped piece, 8a, 8b, 9a, 9b... Fastening bolt,
17, 18, 19, 20...band-shaped piece temporary holding member,
41...Lower body part, 42, 43...Upper body part, 4
4, 45... Universal joint.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of two or more divided cylindrical members that form one cylindrical body by being connected, each divided cylindrical member has a body portion having an arcuate cross section, and an axial direction in the body portion. The joint part of the two pipes, which are formed from the connecting part formed at the edge and are brought into contact with each other, is wrapped around the body with a plurality of split cylinder members, and the pair of opposing connecting parts are fastened together with a fastening bolt. In the pipe joint, the pair of connecting portions include a pair of band-shaped collar members each integrally extending from an axial edge of the body portion and each having at least one through hole; At least one strip having a hole corresponding to the through hole, a fastening bolt passing through the hole in the strip corresponding to the through hole of the strip flange member, and then through the through hole of the strip flange member is screwed. A pipe joint comprising: at least one other strip having a threaded portion; and a strip temporary holding member capable of temporarily holding the two strips in a predetermined position on the strip collar member before fastening with a fastening bolt. 2 Consisting of two or more divided cylindrical members that form one cylindrical body by being connected, each divided cylindrical member has a trunk portion having an arcuate cross section and a connecting portion formed at the axial edge of the trunk portion. In a pipe joint that joins the pipes by wrapping the joint part of two pipes that are butted together with a plurality of split cylinder members and fastening the opposing connecting parts with a fastening bolt, The cylindrical member is composed of one lower body part having a substantially semicircular cross section and two upper body parts having a substantially quarter circumferential cross section, and the lower body part and the upper body part. The connecting portions are connected by a universal joint provided on the axial edges of both body portions, and a pair of connecting portions connecting the upper body portions are integrally extended from the axial edges of the body portions, and at least a pair of band-like collar members each having one or more through holes; at least one band-like piece having a hole corresponding to the through hole of the belt-like collar member; and the above-mentioned belt-like member corresponding to the through hole of the belt-like collar member. At least one other strip-shaped piece has a screw portion for screwing a fastening bolt that passes through a hole in the piece and then a through-hole in the strip-shaped collar member, and the two strip-shaped pieces are attached to a predetermined position of the strip-shaped collar member before being fastened with the fastening bolt. A pipe joint consisting of a band-like temporary holding member that can be temporarily held in position.