JP2001254883A - Joint for corrugate pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint for corrugate pipe capable of uniformly, securely, and firmly tightening a joint body mounted through a packing member by turning around an outer peripheral face including contact end faces substantially while the end faces of two corrugate pipes are abutted. SOLUTION: In the joint 20 for corrugate pipe in which the joint body 30 is mounted by covering an outer peripheral face of the packing member 40 wound by turning around the outer peripheral face including the contact end face 10a connecting two corrugate pipes 10, 10 substantially and the outer peripheral face of the joint main body 30 is tightened by a band 60 to seal and connect the contact end faces 10a, a support ring 82 fixed in opposition to both ends of the band 60 and fixed so that it is substantially circumscribed with the joint body 30, support bars 84 in which an insertion hole 84a drilled by passing through in the radial direction is formed and which form a pair of cylindrical bodies inserted turnably in the support ring 82, and a tightening member mounted by passing through the insertion hole 84a formed in a pair of support bars 84 are provided as tightening means 80 for tightening the band 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for a corrugated pipe.

[0002]

2. Description of the Related Art As a joint for a corrugated pipe for connecting two corrugated pipes so as not to cause liquid leakage from the contacted end faces, as shown in FIG. A joint body 30 mounted so as to cover the surface via a packing member 40, a band 60 wound around the outer peripheral surface of the joint body 30 to fasten and fix the joint body 30, and a band 60 provided at an end of the band 60. And a fastening means (fastening portion) 70 are known. This joint for corrugated pipes is tightened by covering the outer peripheral face of the packing member 40 which is wound around the outer peripheral face including the contact end faces 10a, 10a with a fixed width in a state where the end faces of the corrugated pipes 10, 10 are abutted. Corrugated pipe 1 to prevent water leakage
0 and 10 are connected.

[0003] Reference numeral 72 denotes a pair of L-shaped plate parts (angles) attached to both ends of the band 60, and includes a flange portion 72a and a base portion 72b. Flange part 7
An insertion hole (not shown) is formed in 2a. on the other hand,
The base portion 72b is located directly in contact with the outer peripheral surface. The fastening means (fastening portion) 70 has a pair of L-shaped plate parts (angles) 72, 72 attached to both ends of the band 60 with the flange portions 72a facing each other. The band 60 is tightened by passing a bolt 88 through an insertion hole (not shown) formed in the flange portion 72 a and tightening the nut 89, thereby connecting the corrugated pipes 10, 10 via the packing member 40. The contact end faces 10a, 10a are tightened. Thus, the contact end faces 10a, 10a
The watertightness of the corrugated pipe 10 is ensured, and liquid leakage from the corrugated pipe 10 is prevented.

[0004]

However, in the joint 20 for a corrugated pipe as described above, especially when the thickness of the attached joint body 30 is increased, the tightening becomes uneven. As a result, there is a problem that the flange portion 72a is deformed or damaged. Further, the flange portion 72a
Bolt 88 penetrating through an insertion hole (not shown) formed in
There is a problem that the bolt 88 is deformed or damaged. Moreover,
There is a problem in that the tightening force escapes in the radial direction of the joint body 30 and efficient tightening cannot be performed. This is because the band 60 is connected to the base 72b of the L-shaped plate part (angle) 72, but the flange 72 is separated from the base 72b.
This is because the angle a between the flange portions 72a of the pair of L-shaped plate parts (angle) 72 changes before and after the tightening.

[0005] The present invention has been made to solve the above-mentioned problems, and has an object to provide two corrugated pipes 1.
With the end faces of 0 and 10 abutted, the contact end face 10a
The joint body 30 mounted around the outer peripheral surface including the seal member 40 through the packing member 40 uniformly and reliably, and
An object of the present invention is to provide a corrugated pipe joint that can be more firmly tightened.

[0006]

SUMMARY OF THE INVENTION A joint for a corrugated pipe according to the present invention covers the outer peripheral face of a packing member wound substantially around an outer peripheral face including an abutting end face connecting two corrugated pipes, and is connected to the joint. In a corrugated pipe joint in which a main body is mounted and an outer peripheral surface of the joint main body is tightened by a band to seal and contact the contact end surface, the band is fastened to both ends of the band as tightening means for tightening the band. At the same time, a support ring fixed so as to substantially circumscribe the joint body and an insertion hole penetrated in the radial direction are formed, and are rotatably inserted into the support ring. A pair of cylindrical support members, and a tightening member that is mounted to penetrate through an insertion hole formed in the pair of support bars.

[0007] Since the joint for corrugated pipes according to the present invention is configured as described above, it can be tightened more uniformly, more securely, and more firmly than before.
Preferably, a sheet-like contact plate is provided on the outer surface of the packing member where the fastening means is arranged. With such a configuration, the watertightness of the contact end face connecting the two corrugated pipes is further improved, so that liquid leakage from the contact end face can be suitably prevented.

[0008] Preferably, an outer peripheral surface of the joint body is formed with a concave portion in cross section. When formed in this way, the band can be arranged along the recessed section formed on the outer peripheral surface of the joint body, and can be efficiently tightened.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments of the present invention will be described.
Description will be given based on the attached drawings. FIG. 1 shows a corrugated pipe joint 20 according to the present invention in which two corrugated pipes 10,
The packing member 4 is wound around the outer peripheral surface including the contact end surface 10a with a fixed width substantially in a state of being abutted with the end surfaces of the packing 10.
FIG. 5 is an explanatory view of the outer peripheral surface of the camera mounted on the outer peripheral surface of the camera. The joint 20 for a corrugated pipe of the present embodiment includes a corrugated pipe 1.
The joint main body 30 which is mounted so as to cover the outer surfaces of the butting ends of 0 and 10; a band 60 for tightening and fixing the joint main body 30; and a fastening means (fastening portion) 80 provided at both ends of the band 60. It is configured.

As shown in the figure, two corrugated tubes 1
A packing member 4 made of an elastic body such as rubber, which is made to go around the outer peripheral surface including the abutting end surface 10a to which the 0, 10 are connected at a fixed width and substantially
The joint body 30 is mounted so as to cover the outer peripheral surface of the packing member 40. In the corrugated tube 10 of this embodiment, the corrugated portion formed on the outer peripheral surface is formed in an independent ring shape. The joint body 30 is 2
End faces 10a, 10a of the two corrugated pipes 10, 10
When tightening, the corrugated pipes 10 and 10 play in the joint body 30 and the connection is incomplete even if there is a gap between the joint body 30 and the corrugated pipe 10 because the joint body 30 is tightened via the packing member 40. And the occurrence of water leakage can be prevented. Further, on the inner surface of the joint main body 30, there is provided a projection 30 b that fits into the concave portion 10 b of the corrugated portion of the corrugated pipe 10. Reference numeral 90 denotes a temporary fixing portion, and a pair of fastening pieces 92, 92 facing each other are formed at both end edges 30a of the joint body 30 so as to extend in a flange shape in the radial direction. An insertion hole is formed in each of the fastening pieces 92, 92 so as to face each other, and a bolt 94 penetrates the insertion hole, and a nut 96.
Has been tightened.

As shown in FIG. 2, when the joint body 30 is mounted on the corrugated pipe 10, both end edges 30a are separated from each other. Both ends 30a, 30 of the joint body 30
In a region N straddling a, a patch plate 5 formed in a sheet shape is provided.
0 is preferably arranged on the outer surface of the packing member 40. This is because there is no gap between the joint body 30 and the packing member 40 when tightening, and the tightening can be performed even more securely.

As shown in FIG. 1, a recess 30b is formed in the outer peripheral surface of the joint body 30 on one side and on the other side of the contact end face 10a. ing. A band 60 is arranged along the outer peripheral surface of the concave section 30b, and the joint body 30 is tightened. The band 60 is preferably a metal band having a certain tensile strength required for fastening and fixing the joint body 30.

Next, the structure of the fastening means (fastening portion) 80 will be described with reference to FIG. Reference numeral 86 denotes a connecting plate, which is attached to both ends of the band 60 one by one. This connecting plate 86 is formed wider than the band 60. A support ring 82 has a hollow ring shape. The support ring 82 is attached at regular intervals along opposing ends of the connecting plate 86. In this embodiment, two support rings 82 are provided, but the number of support rings 82a is not particularly limited.

Reference numeral 84 denotes a support rod, and a pair of support rings 8.
Each of the joints 2 and 82 is rotatably inserted, and is inserted so as to substantially circumscribe the joint body 30. The support rod 84 forms a cylindrical body as shown in the figure,
An insertion hole 84a is formed at the center in the longitudinal direction so as to penetrate in the radial direction.

A bolt 88 serving as a fastening member is provided with an insertion hole 84 formed in a pair of opposed support rods 84, 84.
a, 84a. A nut 89 is screwed into the male screw portion 88 a at the tip of the bolt 88 in contact with the outer surface of the support rod 84. The insertion hole 8 formed in the support rod 84
The size of 4a should have some backlash when the bolt 88 is inserted. This is because when the bolt 88 is inserted, the position of the insertion hole 84a can be adjusted by turning the support rod 84.

With the above configuration, the insertion holes 84a, 84a formed in the support rods 84, 84 as shown in FIG.
By turning and tightening the nut 89 attached to the male screw portion 88a at the end of the bolt 88 that has penetrated through, the spacing between the support rods 84, 84 is reduced, the end faces of the joint body 30 approach each other, and the packing member 40 is removed. End face 10a to which corrugated pipes 10 and 10 are connected via
Is tightened. At this time, at the protrusion 30b provided on the inner surface of the joint main body 30, the packing member 40 is strongly tightened to improve the sealing performance, and has an effect of preventing the two corrugated pipes 10, 10 from coming off. Further, the entire fastening force acting via the support rods 84, 84 acts in the circumferential direction, and the entire fastening force directly acts as a pulling force on the band 60. Since the fastening means (fastening portion) 80 is provided with a cylindrical support rod 84 as a component, like the flange portion 72a of the L-shaped plate component (angle) 72 shown in FIG.
Do not fall down. Further, the size of the insertion hole 84 a formed in the support rod 84 is formed so that when the bolt 88 penetrates, the support rod 84 has a certain amount of play, and the support rod 84 rotates inside the support ring 82. Because it is freely inserted, when tightening the bolt with 88 and nut 89,
When the support rod 84 moves, the angle can be adjusted naturally, and the entire outer periphery can be efficiently and uniformly and firmly tightened.

The above description is a preferred example of an embodiment according to the present invention, and the present invention is not limited to this embodiment, and may be modified in various ways without departing from the spirit of the invention. Of course to get. For example, the corrugated tube 10 is not limited to a corrugated portion formed on the outer peripheral surface in an independent ring shape, but is also applicable to a corrugated tube formed in a spiral shape. In addition, the joint body 30 may be attached by combining a member formed by dividing a cylindrical body in a circumferential direction and forming a semicircular cross section. Corrugated pipe 10
This is because, when the diameter of the lens becomes large, the work at the time of mounting becomes easy to perform, and it is efficient. Further, instead of the temporary fixing portion 90, a fastening means (fastening portion) 80 for fastening the band 60 may be provided. Further, the support ring 82 and the connecting plate 86 may be formed integrally. Also,
The band 60 may be a narrow wire as long as the band 60 is made of a metal having a certain tensile strength necessary for tightening the joint body 30.

[0018]

As described above, according to the joint for a corrugated pipe according to the present invention, a band fastening means (fastening) for fastening a joint body to be mounted so as to cover an outer peripheral surface including an abutting end face of two connected corrugated pipes. As a component of the part), a pair of opposed cylindrical support rods are provided and are rotatably inserted into the support ring, so that the angle adjustment is automatically performed during tightening, and the support rod is The entire tightening force acting through the band acts in the circumferential direction and acts as it is as a pulling force on the band. Therefore, the entire outer peripheral surface of the joint body can be uniformly and reliably tightened more securely.

[0019]

[Brief description of the drawings]

FIG. 1 is a side view of a joint for a corrugated pipe according to the present invention.

FIG. 2 is a view showing a part of a sectional front view of a joint for a corrugated pipe according to the present invention.

FIG. 3 is a view showing a fastening means (fastening portion) of the joint for a corrugated pipe according to the present invention.

FIG. 4 is a view of a conventional corrugated pipe joint mounted state viewed from directly above.

[0020]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Corrugated pipe 10a Contact end face 10b Recess 20 Joint 30 Joint main body 30a Both end edges 30b Recess 30c Projection 30d Fastening piece 40 Packing member 50 Backing plate 60 Band 70 Fastening means (fastening portion) 72 L-shaped plate part (angle) ) 72a flange portion 72b base portion 80 fastening means (tightening portion) 82 support ring 84 support rod 84a insertion hole 86 connecting plate 88 bolt 88a male screw portion 89 nut 90 temporary fixing portion 92 fastening piece 94 bolt 96 nut N area

Claims (4)

[Claims] 1. A joint body is mounted to cover an outer peripheral surface of a packing member wound around the outer peripheral surface including an abutting end surface connecting two corrugated pipes, and an outer peripheral surface of the joint main body is banded. In the joint for corrugated pipes, which is connected by sealing the abutting end face by tightening, as a fastening means for fastening the band, it is fixed opposite to both ends of the band, and almost circumscribes the joint body. A fixed support ring, a pair of cylindrical support rods, each having a pair of cylindrical bodies rotatably inserted into the support ring and having an insertion hole formed therethrough in a radial direction. A joint for a corrugated pipe, characterized in that a fastening member is provided to be inserted through an insertion hole formed in the support rod. 2. The joint for a corrugated pipe according to claim 1, wherein a patch plate formed in a sheet shape is provided on an outer surface of the packing member where the tightening means is arranged. 3. The joint for a corrugated pipe according to claim 1, wherein a concave section is formed on an outer peripheral surface of the joint body. 4. The joint for a corrugated pipe according to claim 3, wherein the band arranges the joint main body along a concave section formed on an outer peripheral surface of the joint main body.