JPH07317111A - Manhole pipe fitting - Google Patents

Abstract

PURPOSE:To obtain a manhole pipe fitting which can regulate the connecting position to a piping. CONSTITUTION:In a manhole pipe fitting 1 in order to connect a piping 12 buried under the ground to the side wall of a manhole 11, a flange 6 provided along the peripheral surface of the manhole 11 is provided on the periphery of a tube form fixed body 2 inserted into a hole 11a opened on the side wall of the manhole 11. The bottom surface (end face) 7a of the fixed body 2 at the piping 12 side is formed inclining a specific angle theta to the axial line A of the fixed body 2. A tube form movable body 3 having the front end surface (end face) 7a abutted to the bottom surface 5a, and connected to the piping 12, is provided rotatable by making a normal C of the bottom surface 5a, in the condition that the axial line B of the movable body 3 has a specific angle thetato the normal C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole fitting for connecting a pipe for pouring sewage discharged from a general house or the like into a public sewer to a side wall of a manhole.

[0002]

2. Description of the Related Art When sewage discharged from a general house is poured into a public sewer, a pipe from a general house is connected to the side wall of a manhole attached to the public sewer, and the sewage is once poured into the manhole and collected. Wastewater is discharged to public sewers.

In order to connect the pipe to the side wall of the manhole, a manhole pipe joint 31 shown in FIG. 4 described in Japanese Utility Model Laid-Open No. 6-1449 has been conventionally used.

In this manhole pipe joint 31, a pipe portion 33 is inserted into a hole 34a formed in a side wall of a concrete manhole 34, and a flange 32 extending along the outer peripheral surface of the manhole 34 is attached to the outer peripheral wall of the pipe portion 33. Is provided. The flange 32 is fixed to the side wall of the manhole 34, and the manhole fitting 31 is attached to the manhole 34.

Then, a pipe (not shown) is attached to the pipe body portion 33 to connect the pipe to the side wall of the manhole 34.

[0006]

However, in such a manhole pipe joint 31, since the pipe body portion 33 is fixed, when the pipe is attached to the pipe body portion 33, the axis of the pipe is set to the pipe body portion 33. It must be mounted according to the axis of, and the arrangement position and the arrangement form of the pipe are limited. Further, if the axis of the pipe and the axis of the tubular body portion 33 cannot be aligned, it is necessary to interpose a separate joint.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a manhole pipe joint whose connection position with a pipe can be adjusted.

[0008]

In order to achieve the above-mentioned object, the invention described in claim 1 is a manhole pipe joint for connecting a pipe buried in the ground to a side wall of a manhole, wherein the manhole is The outer circumference of the tubular fixed body inserted into the hole formed in the side wall of the fixed body is provided with a flange along the outer peripheral surface of the manhole, and the end surface of the fixed body on the pipe side is set relative to the axis of the fixed body. A tubular movable body that is formed by inclining at a predetermined angle and has an end surface that abuts against this fixed body end surface, and the axis of this movable body is relative to the normal line of the fixed body end surface. It is characterized in that it is provided so as to be rotatable around a normal to the end face of the fixed body in a state of having a predetermined angle.

The invention according to claim 2 is characterized in that a fixing means for fixing the movable body at a desired rotational position is provided.

[0010]

According to the manhole pipe joint according to the invention described in claim 1, in the state where the movable body connected to the pipe has a predetermined angle with respect to the normal line of the end face of the fixed body, Since it is possible to rotate around the normal, it is possible to connect the pipe and the movable body by rotating the movable body according to the arrangement position of the pipe.

Therefore, compared with the prior art, it is possible to alleviate the restriction on the arrangement position of the pipe, and it is not necessary to separately interpose a joint for connecting the pipe and the manhole pipe joint.

Further, since the end surface of the fixed body and the end surface of the movable body are in contact with each other, dirty water from the pipe will not be collected in the gap between the end surface of the fixed body and the end surface of the movable body.

On the other hand, according to the manhole pipe joint according to the invention described in claim 2, since the fixing means for fixing the movable body at a desired rotational position is provided, the movable body is rotated to move the pipe and the movable body. By fixing the movable body after connecting it with the body, it is possible to prevent the movable body from rotating and the connection position shifting.

[0014]

EXAMPLES The present invention will be described below based on examples.

FIG. 1 shows an embodiment of the present invention.

First, the structure will be described.
The manhole pipe joint in this embodiment is roughly divided into a fixed body 2 and a movable body 3.
The manhole fitting 1 is made of resin such as vinyl chloride, and the manhole 11 is made of concrete.

The fixed body 2 has a tubular shape and has an insertion portion 4
And a receiving portion 5. A flange 6 is formed on the outer periphery of the insertion portion 4 along the outer peripheral surface of the manhole 11. Then, the insertion portion 4 is inserted into the hole 11a formed in the side wall of the manhole 11, the flange 6 and the manhole 11 are fastened with a binding band (not shown), and the fixing portion 2 is attached to the manhole 11. ing.

The receiving portion 5 has a substantially bowl shape, and the bottom surface 5a as the "end surface of the fixed body" is inclined by a predetermined angle θ with respect to the axis A of the fixed body 2. And the receiving part 5 is formed in the normal line C direction of this bottom face 5a. Further, a plurality of hooks 9 as "fixing means" are attached to the outer circumference of the receiving portion 5 on the circumference.

On the other hand, the movable body 3 has a tubular shape and comprises a sliding portion 7 and a connecting portion 8.

The sliding portion 7 has a shape along the inner wall of the receiving portion 5, and its inner diameter is the same as the inner diameter of the receiving portion 5. Also, an "end face" that abuts the bottom surface 5a of the receiving portion 5
A tubular groove 7b is cut in the front end surface 7a, and an O-ring 10 is inserted into the groove 7. Further, a convex locking edge 7c is formed on the outer periphery of the sliding portion 7, and the hook 9 is locked to the locking edge 7c to fasten the fixed body 2 and the movable body 3. .

Further, the inner diameter of the connecting portion 8 is larger than the inner diameter of the sliding portion 7, and the pipe 12 is inserted into the connecting portion 8,
The movable body 3 and the pipe 12 are connected. At this time, the inner diameters of the pipe 12, the sliding portion 7, and the connecting portion 8 are determined such that the inner diameter of the sliding portion 7 is the same as or larger than the inner diameter of the piping 12. As a result, when dirty water flows in from the pipe 12, the dirty water does not accumulate at the connection between the pipe 12 and the movable portion 3.

Next, the operation of the manhole pipe joint 1 having such a structure will be described.

Here, it is assumed that the pipe 12 is provisionally arranged in advance at a predetermined position in the ground.

First, as described above, the manhole fitting 1
Is attached to the side wall of the manhole 11, and all the hooks 9 are removed from the locking edges 7c. Then, the movable part 3 is moved so that the connecting part 8 is aligned with the tip of the pipe 12. At this time, since the normal line C of the bottom surface 5a of the receiving part 5, that is, the axis line C of the receiving part 5 is inclined by the angle θ with respect to the axis line B of the movable body 3, the movable body 3 is centered on the normal line C. Can rotate.

Then, after the connecting portion 8 is aligned with the tip of the pipe 12, the hook 9 is locked to the locking edge 7c to move the movable body 3
To fix. At this time, the O-ring 10 is crushed by the locking force of the hook 9, and the fixed body 2 and the movable body 3 are sealed.

Finally, the pipe 12 is inserted into and connected to the connecting portion 8 to complete the connection work between the manhole 11 and the pipe 12.

In the manhole fitting 1 having such a structure, the movable body 3 connected to the pipe 12 is rotated about the normal line C with a predetermined angle θ with respect to the normal line C. Therefore, the movable body 3 can be rotated according to the arrangement position of the pipe 12 to connect the pipe 12 and the movable body 3.

Therefore, compared to the conventional case, it is possible to relax the restriction on the arrangement position of the pipe 12, and it is not necessary to separately interpose a joint for connecting the pipe 12 and the manhole pipe joint 1.

Since the bottom surface 5a of the receiving portion 5 and the tip surface 7a of the sliding portion 7 are in contact with each other, the bottom surface 5a and the tip surface 7 are formed.
Sewage from the pipe 12 does not collect in the gap with a.

Furthermore, since the hook 9 for fixing the movable body 3 is provided, the movable body 3 is rotated to a desired rotation position to connect the pipe 12 and the movable body 3, and then the movable body 3 is fixed. By doing so, it is possible to prevent the movable body 3 from rotating and shifting the connection position.

Although the embodiments of the present invention have been described with reference to the drawings, the specific structure is not limited to the above-mentioned embodiments, and there are design changes and the like within the scope not departing from the gist of the present invention. However, it is included in the present invention.

For example, in the above embodiment, the movable body 3 is fixed by the hook 9, but it may be "fixing means" as shown in FIG. That is, in this manhole pipe joint 21, a screw is cut on the outer periphery of the receiving portion 25 of the fixed body 22, and a union nut 24 as a "fixing means" to be screwed with this screw is provided on the movable body 23 side. Then, by tightening the union nut 24, the movable body 23 is pressed against the fixed body 22 to fix the movable body 23, and by loosening the union nut 24, the movable body 23 becomes rotatable.

A cam type "fixing means" as shown in FIG. 3 may be used.

In this fixing means, on the circumference of the receiving portion 27,
A plurality of cams 28 that are slidable in the radial direction are attached, and a tapered surface 28b is formed at a tip end portion 28a of the cam 28. On the other hand, on the outer circumference of the sliding portion 26, the cam 28
Is formed, and the surface 29a of the locking groove 29 that is in sliding contact with the tapered surface 28b is formed to have a taper at the same angle as the tapered surface 28b. With the cam 28 being locked in the locking groove 29, the sliding portion 26 is pressed against the receiving portion 27 and fixed. Then, by pulling out the sliding portion 26 in the arrow F direction, the cam 28 moves upward, the fixed state of the sliding portion 26 is released, and the sliding portion 26 becomes rotatable. It should be noted that the cam 28 is directly pulled up by the hand so that the sliding portion 26
The fixed state of may be released.

[0035]

As described above, according to the manhole pipe joint of the invention described in claim 1, the movable body connected to the pipe has a predetermined angle with respect to the normal to the end face of the fixed body. In this state, it is possible to rotate around the normal line of the end surface of the fixed body, so rotate the movable body according to the position where the pipe is arranged,
The pipe and the movable body can be connected.

Therefore, compared to the prior art, it is possible to alleviate the restrictions on the location of the pipes, and it is not necessary to separately interpose a joint for connecting the pipe and the manhole pipe joint.

Further, since the end surface of the fixed body and the end surface of the movable body are in contact with each other, sewage from the pipe does not collect in the gap between the end surface of the fixed body and the end surface of the movable body.

On the other hand, according to the manhole pipe joint according to the invention described in claim 2, since the fixing means for fixing the movable body at a desired rotational position is provided, the movable body is rotated to move the pipe and the movable body. By fixing the movable body after connecting it with the body, it is possible to prevent the movable body from rotating and the connection position shifting.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a manhole pipe joint is attached to a manhole according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a manhole pipe joint having another fixing means is attached to a manhole.

FIG. 3 is an enlarged sectional view showing a cam type fixing means.

FIG. 4 is a cross-sectional view showing a state in which a manhole pipe joint is attached to a manhole in a conventional example.

[Explanation of symbols]

 1 Manhole fitting 2 Fixed body 3 Movable body 5a Bottom surface (end surface of fixed body) 6 Flange 7a Tip surface (end surface of movable body) 11 Manhole 12 Piping

Claims (2)

[Claims] 1. A manhole pipe joint for connecting a pipe buried in the ground to a side wall of a manhole, wherein the manhole is attached to the outer periphery of a tubular fixed body inserted into a hole formed in the side wall of the manhole. A flange along the outer peripheral surface is provided, and the end surface of the fixed body on the pipe side is
A tubular movable body that is formed by inclining at a predetermined angle with respect to the axis of the fixed body and has an end surface that abuts the end surface of the fixed body, and that is connected to the pipe, is provided such that the axis of the movable body is the fixed body. A manhole pipe joint, wherein the manhole pipe joint is provided so as to be rotatable around a normal line of the end surface of the fixed body at a predetermined angle with respect to a normal line of the end surface. 2. The manhole pipe joint according to claim 1, further comprising fixing means for fixing the movable body at a desired rotational position.