JPH0953784A - Flexible rubber coupling having separation preventing means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly prevent the shearing movement of an outside rubber ring in a flexible rubber ring which is formed for connecting between a manhole and an inlet and a pipe conduit and so on, by forming the outside rubber ring in a U-shaped cross section so as to be sandwiched and fitted to the side holes of the manhole and the inlet or the pipe conduit. SOLUTION: An outside rubber ring 3 fitted to the side hole 2 of a main pipe 1 has a ring body part 3a and side piece parts 3b, 3c and is formed in a U-shaped cross section so as to hold, stop and fit the edge of the side hole 2 from both inside and outside. The outside rubber ring 3 is formed in a curved shape, and also formed in a widened part 4 by outwardly extending the side piece parts 3b, 3c. In a separation preventing tool 5, several stages of downward cross sections 6a are arranged in the width direction of the back surface of the back plate 5a thereof, and fitted to the outside rubber ring 3 from the inside. A spacer ring body 7 is press-fitted to the inner surface of the outside rubber ring 3 so that a mounting pipe 9 fitted and inserted to the side hole 2 is fitted by the outside end part of a flexible rubber cylinder 8, and after that, the outside of the flexible rubber cylinder 8 is fastened by a band 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible rubber joint for connecting a manhole or basin to a pipe, or between a pipe and a mounting pipe, and more specifically, to prevent the spacer ring body from returning and coming off due to the return. The present invention relates to a flexible rubber joint provided with means.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 7-1 discloses a connection joint of this type.
There is a 74281 publication. The publication discloses (a) a concrete structure having a mounting hole in a side wall, and (b) a mounting pipe having an insertion portion inserted into the mounting hole of the concrete structure,
(c) No. 1 that is liquid-tightly adhered to the outer periphery of the insertion part of this mounting tube
A tubular portion, a second tubular portion that is liquid-tightly adhered to the inner periphery of the mounting hole of the concrete structure, and an annular block that closes one end side of the first tubular portion and one end side of the second tubular portion. An elastic seal member having a portion, (d) fixing means for fixing the first cylinder portion to the outer periphery of the insertion portion of the mounting pipe, and (e) the second cylinder to the inner periphery of the mounting hole of the concrete structure. A connecting joint for a mounting pipe is provided, which comprises an adhesive for bonding parts.

[0003]

However, there is a problem in that the second tubular portion (outer tubular portion) described in this publication has a flat shape and is displaced with respect to the side surface hole of the manhole to be fitted. In addition, there is a problem in that the insert (the spacer ring body in the present application) for pressing the outer cylindrical portion into pressure contact with the side surface hole returns and moves or separates so that the pressure contact does not occur.

[0004]

According to the present invention, an outer rubber ring is fitted to a side hole formed on a side surface of a manhole or a basin or a pipe for connection between a manhole or basin and a pipe or between a pipe and a mounting pipe. , The spacer ring is pressed into the inner surface of the outer rubber ring by pressing or pushing to press the outer rubber ring into the side surface hole, and the pipe or the attachment pipe is attached to the flexible rubber cylinder extending from the inner end of the outer rubber ring. In a flexible rubber joint adapted to be fitted and band-tightly connected, the outer rubber ring is formed in a U-shaped cross section including a wheel body portion and two side piece portions, and is fitted into the side hole by being clamped. In addition, a detachment prevention tool having a U-shaped body provided with a step surface for preventing biting on the back is fitted to a part of the outer rubber ring, and the step surface for preventing biting prevents the outer surface of the spacer ring body from being The spacer ring is formed by blocking the stepped surface provided in part So as to prevent separation caused by the return of the return, it is intended to solve such problems.

[0005]

According to the present invention, the outer rubber ring is sandwiched between the manholes, the troughs, or the side surface holes of the pipes and fitted, and then the detachment prevention tool is fitted to a part of the outer rubber ring, and the chewing step surface While stopping, the spacer ring body is tapped or pushed in to prevent the return looseness of the spacer ring body and the accompanying detachment.

[0006]

EXAMPLE An example will be described below with reference to a connecting portion between a main pipe as a pipe and a mounting pipe.

An outer rubber ring 3 is fitted into a side surface hole 2 provided on the side surface of the main pipe 1. As shown in FIG. 1, the outer rubber ring 3 has a wheel body portion 3a and side piece portions 3b and 3c, and is formed in a U-shape in cross section. To do.
The outer rubber ring 3 is similarly formed in a curved shape so as to correspond to the side hole 2 being bent along the cylinder of the main pipe 1 in a curved shape.

As shown in FIG. 2, the outer rubber ring 3 is formed by expanding side portions 3b and 3c at two locations in the axial direction of the main pipe 1 to the outside to form a widened portion 4, and a back plate 5a and both side portions 5b. Fitting bag into which both side portions 5b and 5c of the separation preventing tool 5 having a U-shaped cross section are fitted.
4a and fitting groove 4b are provided.

The disengagement prevention member 5 is formed of a synthetic resin such as ABS resin having rigidity, and a downward step surface 6a is provided in several steps in the width direction of the back surface of the back plate 5a to prevent it from biting outside. The rubber ring 3 is fitted from the inside, and both side portions 5b and 5c are fitted in the fitting bag 4a and the fitting groove 4b, respectively.

Then, similarly, the spacer ring body 7 formed of ABS resin or the like with rigidity is press-fitted into the inner surface of the outer rubber ring 3. As shown in FIG. 1, the spacer ring body 7 is formed in a curved shape along the shape of the outer rubber ring 3 on the tip side to be press-fitted, and as shown in FIG.
The inside of two places corresponding to is made thickened to be a thickened portion 7a, and a recessed portion 7b into which the back plate 5a of the separation prevention tool 5 is fitted is provided on the outer surface thereof.
An upward step surface 6b that meshes with the downward step surface 6a is provided in the width direction of the concave portion 7b, and the downward step surface 6b is pressed in the process of press fitting.
The spacer ring 7 is engaged with 6a to prevent the return slack of the spacer ring body 7 and the accompanying disengagement. In addition, 7c is a collar body provided around the upper end of the spacer ring body 7.

The outer rubber ring 3 is pressed into the side hole 2 more and more by the press-fitting of the spacer ring body 7, and the flexible rubber tube 8 is extended from the side of the fitting bag 4a to the inside to gradually extend outward with a small diameter. At the outer end, the mounting tube 9 fitted into the side surface hole 2 is fitted,
Tighten the band 10 from the outside of the outer end of the flexible rubber tube 8,
Therefore, the main pipe 1 and the mounting pipe 9 are connected.

When press-fitting the spacer ring body 7, in addition to tapping with the collar body 7c, as shown in FIG. You can also

Further, since the side surface hole formed on the side surface of the square (not shown) having a square shape in plan view has a planar shape,
The outer rubber ring 3 fitted in the side surface hole of the basin also remains flat. In addition, the detachment prevention tool 5 may be fitted in one or three or more places.

[0014]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in the flexible rubber ring formed for connecting the manhole or between the rod and the pipe or between the pipe and the mounting pipe, the outer rubber ring has a U-shaped cross section. The outer rubber ring fitted into the side hole is prevented from slipping and moving because the side rubber is inserted into the side hole of the pipe or the trough or pipe.

A detachment prevention tool is fitted to the outer rubber ring fitted in the side surface hole, and the stepped surface provided on the spacer ring body is press-fitted inward by the bite prevention stepped surface provided on the detachment prevention tool. Since this is done, there is an effect that the return slack of the spacer ring body and the separation due to the return can be prevented.

As described above, the effect that the outer rubber ring can be connected to the side hole in a watertight manner is produced.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment in which a mounting pipe is connected to a main pipe.

FIG. 2 is a vertical side view of the same.

FIG. 3 is a top view of the same as seen from the mounting pipe side.

FIG. 4 is a partial vertical cross-sectional side view showing a state in which the spacer ring body is pushed in by the clamp.

[Explanation of symbols]

 1 is a main pipe 2 is a side surface hole 3 is an outer rubber ring 3a is a body part 3b, 3c is a side piece part 4 is a widening part 4a is a fitting bag 4b is a fitting groove 5 is a detachment prevention tool 5a is a back plate 5b, 5c is both side parts 6a is a downward step 6b is an upward cross section 7 is a spacer ring 7a is a thick part 7b is a recess 7c A collar 8 is a flexible rubber tube 9 is a mounting tube 10 is a band 11 is a clamp

Claims (3)

[Claims] 1. An outer rubber ring is fitted into a side hole formed on a side surface of the manhole or basin or pipe for connection between a manhole or basin and a pipe or between a pipe and a mounting pipe, and an inner surface of the outer rubber ring is fitted. The outer ring is pressed into the side surface hole by tapping or pushing the spacer ring into, and the pipe or the mounting pipe is inserted into the flexible rubber tube extending from the inner end of the outer ring to tighten the band. In the flexible rubber joint described above, the outer rubber ring is formed in a U-shaped cross-section including a wheel body portion and two side piece portions, and is fitted into the side hole by being clamped. A part of the rubber ring is fitted with a separation prevention tool having a U-shaped rear surface with a step surface for preventing biting, and the step surface provided on a part of the outer surface of the spacer ring body is attached to the step surface for preventing biting. Retaining the spacer ring body by stopping biting and separation accompanying the return A flexible rubber joint having detachment preventing means. 2. A spacer ring body is provided with a thickened portion having an increased inner surface side, and a recessed portion into which a back plate portion of a separation prevention tool is fitted is provided on an outer surface of the thickened portion, and the inside of the recessed portion is provided. The flexible rubber joint according to claim 1, wherein a stepped surface that is prevented from being bitten by is formed. 3. A widened portion that expands outward is provided at a part of the two side piece portions forming the outer rubber ring, and the two widened side piece portions are fitted with fitting bags on both sides of the separation preventing tool. The flexible rubber joint according to claim 1, wherein each groove is formed.