JPH0434312Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention relates to a pipe joint, and more specifically, a rectangular body plate, a rectangular body plate, and a body plate that is bent in an arc shape to connect opposite ends thereof, thereby forming a body plate. The present invention relates to a pipe joint comprising a plate wrapped around both parts of a pair of circular pipes, such as a pair of corrugated pipes, which are in abutting state, and a connecting part capable of sealingly joining the two circular pipes.

(B) Prior Art Conventionally, the connecting portion of this type of pipe joint is made up of a pair of bent pieces extending outward from opposite ends of the body plate in a plane parallel to the axis of the circular pipe, and It consists of a bolt and a nut that fasten a pair of bent pieces.
Note that a sealing material (ring-shaped packing) is usually interposed between each circular tube and the body plate to increase the degree of sealing joint between the two circles.

(c) Problems to be solved by the invention However, in the conventional connection structure as described above, when a bolt or nut is tightened, 1
The pair of bent pieces (particularly near their bases) were prone to bending, and as a result, there was a risk that the areas near both ends of the body plate would separate from the circular tube, reducing the sealing effect.

(d) Means and action for solving the problem This invention is a pair of corrugated pipes having spiral concave and convex striations, which are in a butt state, and which are wrapped around each concave striation, and the convex A pair of seal rings that continue over the strip, a rectangular body plate that is divided into one or two parts, and this body plate is bent into an arc shape to connect the opposite ends of the body plate. Then, the body plate is wrapped around both parts of the pair of corrugated pipes in the abutted state through both seal rings, and one or two connections are made that can sealingly join both the corrugated pipes. and at least one of the connecting parts includes a vertical piece extending outward from the front side of one end of the body plate in a plane substantially parallel to the corrugated pipe, and a vertical piece extending from the one end side of the body plate to the outside of the vertical piece. a bent piece that bends and extends from the other end side of the body plate to the outer surface up to the base, and then bends and extends outward along the vertical piece;
This pipe joint includes a fastening means for fastening the bent piece and the vertical piece.

In other words, this idea is to provide a vertical piece outward from the front of one end of the body plate, and insert the part from one end of the body plate to the base of the vertical piece between the bent piece and the corrugated pipe. Therefore, even if the vicinity of the base of the bent piece and the upright piece are bent when the bent piece and the upright piece are fastened together, a gap can be prevented from forming between the body plate and the seal ring. In particular, since the sealing ring becomes linear and thin, it is necessary to tighten the pipe joint to the corrugated pipe strongly to improve the sealing effect, and the deviation near the base of the two pieces becomes large. However, since one end is embedded between the bent piece and the corrugated pipe, it is possible to prevent a gap from forming even in that case.

Here, the distance from one end of the body plate to the base of the vertical piece is specifically 30 to 150 mm, preferably 50 to 100 mm.
It is. However, body plate thickness: 0.2~5mm, length: 50
-500mm, outer diameter of corrugated pipe: 50-3000mm, height of vertical piece and bent piece (outward): 30-150mm.

Furthermore, by providing bent pieces from opposite ends of the body plate, and using a specific packing that extends bifurcated from between these bent pieces and is inserted between the body plate and the corrugated pipe, the above structure and the like can be achieved. Similarly, it is possible to prevent a gap from forming between the body plate and the corrugated pipe.

Here, the length of the fin-like part of the packing that is inserted between the body plate and the corrugated pipe is 10 to 150 mm, preferably 20 to 80 mm. However, the thickness of the body plate: 0.2~
5mm, length: 50-500mm, outer diameter of corrugated pipe:
50~3000mm, height of bent piece (outward): 30~150
mm, packing material: Rubber material such as neoprene rubber (any material used as packing in this field can be selected as appropriate).

In these designs, the fastening means means a means for tightening the above-mentioned vertical piece and bent piece, or the bent pieces together, and specifically, a combination structure of bolts and nuts, or a combination structure of bolts and nuts, or by wrapping and bending both pieces together. Preferable examples include a wrap-around structure in which the material is tightened.

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

First, in FIGS. 1 to 3, the pipe joint 1 includes rectangular body plates 2 and 3 divided into two, and these body plates are bent into an arc shape to form opposite end sides 4, 5, 6,
7 is connected, thereby spanning both parts of a pair of corrugated pipes 8 and 9 whose shell plates are butted together, and wrapped around the bodies through seal rings 10 and 11, respectively, to seal both pipes 8 and 9. It has two connecting parts 12 and 13 that can be joined together.

One of the connecting portions 12 includes an upright piece 14 extending outward (in the centrifugal direction) from the front side of one end side 5 of the rectangular body plate 3 in a plane substantially parallel to the axes of the corrugated pipes 8 and 9;
It bends and extends from the other end side 4 of the rectangular body plate 2 to the outer surface from the one end side 5 of the rectangular body plate 3 to the base of the vertical piece 14, and then extends outward along the vertical piece 14. It consists of a bent piece 15 that is bent and extends, and bolts 16 and nuts 17 as fastening means for fastening this bent piece and the vertical piece 14.

In this way, the vertical piece 14 and the bent piece 15 are connected to each other by the bolt 16.
Even if the bent parts (roots) of both pieces are bent and a gap is created by tightening with the nut 17,
A vertical piece 14 is inserted from one end side 5 between the bent piece 15 and the corrugated pipes 8, 9, or more precisely, the seal rings 10, 11.
Since the corrugated pipes 8 and 9 are screwed in up to the base, there is almost no influence from this, and it is possible to seal the corrugated pipes 8 and 9 together.

These corrugated pipes 8 and 9 are buried deep in the soil, for example, as drainage pipes, but if the seams are well sealed, water in the soil may enter the corrugated pipes 8 and 9, or vice versa. This prevents wastewater from leaking and makes it easier to manage the flow rate of wastewater.

The other connecting portion 13 is formed by overlapping the bent pieces 18 and 19 corresponding to the vertical piece 14 and bent piece 15 of the one connecting portion 12 and folding them together.
Other than tightening 8 and 19, one of the connecting parts 12
It is similar to When the bent pieces 18 and 19 are rolled up and bent, even if the bent portions (roots) of both pieces are bent, the two corrugated pipes 8 and 9 can be sealed in the same manner as in the case of one of the connecting parts. becomes possible.

Note that the seal ring 10 has a connecting portion 20 that goes over the spiral protruding portion 21 of the corrugated pipe 8,
As a result, it is formed into an endless ring shape.

Unlike the above embodiments, the rectangular body plate of the pipe joint may be constructed of only one piece, as shown in FIG.

Next, an example will be given in which packing is used for the connecting portion of a pipe joint. That is, in FIGS. 6 and 7, the connecting portion 12b connects the opposite end sides 4 of the rectangular body plates 2b and 3b.
two bending pieces 14b that bend b, 5b outward;
15b, a packing 22b interposed between these bent pieces, and a bolt 16b and a nut 17b that pass through this packing and fasten the two bent pieces 14b and 15b.

Therefore, the packing 22b includes the double-folded pieces 14b,
15b, and fin-like parts 24b, 25b extending in two from the inner edge of this plate-like part between the body plates 2b, 3b and the corrugated pipes 8b, 9b. It is made of neoprene rubber.

In this way, even when both bent pieces 14b and 15b are fastened with the bolt 16b and nut 17b, the plate-like portion 23b of the packing 22b is interposed between the both bent pieces, and the fin-like portions 24b and 25b of the packing 22b are interposed between the bent pieces 14b and 15b.
extends between the body plates 2b, 3b and the corrugated pipes 8b, 9b, so the double-bent pieces 14b, 15 slightly
Even if the bent portion b is bent, a high degree of sealing effect can be obtained, and both the corrugated pipes 8b and 9b can be sealed together, making it easy to manage the flow rate of drainage as in the previous embodiment. . Note that the configuration of the connecting portion 13b is the same as that of the connecting portion 12b described above, so a description thereof will be omitted.

(f) Effects of the device According to this device, a bent piece and a vertical piece extending from opposite ends of the body plate, or two bent pieces, are fastened together, whereby the bent portions on both sides are bent. Also, since it is difficult to form a gap between the body plate and the corrugated pipe, it is possible to seal the corrugated pipes that are butted together.

[Brief explanation of the drawing]

Fig. 1 is an explanatory cross-sectional configuration diagram showing one embodiment of this invention, Fig. 2 is a partial longitudinal sectional configuration explanatory diagram thereof, and Fig. 3 is a perspective view of a seal ring used in the embodiment. Figure 4 is a side view of the same, Figures 5 and 6 are views corresponding to Figure 1 showing other embodiments, and Figure 7 is a side view of the same.
The figure is a perspective view of the packing used in the embodiment of FIG. 6. 1... Pipe joint, 2, 3... Rectangular body plate, 4-7...
... Opposite end, 8, 9... Corrugated pipe, 10...
Seal ring, 12, 13... Connecting portion, 14... Standing piece, 15... Bent piece, 16... Bolt, 17...
Natsuto.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of corrugated pipes that have spiral concave and convex striations and are in abutting condition, and are wrapped around the body along each concave striation, and continue beyond the convex striations. to be done1
A pair of seal rings, a rectangular body plate divided into one or two halves, and the body plates are bent into an arc shape to connect opposite ends of the body plates, thereby bringing the body plates into the abutting state. one or two connecting portions that are wrapped around both parts of the pair of corrugated pipes through both seal rings, and capable of sealingly joining both corrugated pipes; One is a vertical piece that extends outward from the front of one end of the body plate in a plane substantially parallel to the axis of the corrugated pipe, and the other is a vertical piece that extends outward from the front of one end of the body plate in a plane substantially parallel to the axis of the corrugated pipe, and a vertical piece of the body plate that extends from the one end of the body plate to the base of the vertical piece. A pipe joint consisting of a bent piece that bends and extends from the other end side and comes into close contact with each other, and then bends and extends outward along the upright piece, and a fastening means that fastens the bent piece and the upright piece. 2 A pair of corrugated pipes having spiral concave and convex striations, which are in abutting state, are wrapped along each concave striation, and continue beyond the convex striations 1
A pair of seal rings, a rectangular body plate divided into one or two halves, and the body plates are bent into an arc shape to connect opposite ends of the body plates, thereby bringing the body plates into the abutting state. one or two connecting portions that are wrapped around both parts of the pair of corrugated pipes through both seal rings, and capable of sealingly joining both corrugated pipes; One is two bent pieces extending outward from opposite ends of the body plate in a plane substantially parallel to the axis of the corrugated pipe, a plate-like part interposed between these bent pieces, and this plate-like part. A packing consisting of a fin-like part integrally extending into two parts between the body plate and the corrugated pipe from the inner end of the part, and a fastening means for passing through the plate-like part of the packing and fastening the two bent pieces. A pipe joint consisting of.