JP2002213009A - Branched joint for sewage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent sewage flowing from a mounting pipe from flowing into a space for communication cable so as to prevent sewage from coming into contact with a communication cable and branch the communication cable easily by merely putting the communication cable into the space for communication cable from a sewage main pipe. SOLUTION: A branched joint 10 for sewage has a branched pipe 34 and is attached to the sewage main pipe 16 by a saddle 38. A partitioning plate 36 is provided inside the branched pipe 34 to partition into an upper space 40 for communication cable and a lower space 42 for drainage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage branch joint, and more particularly to a sewage branch joint used for attaching a mounting pipe from a sewage pipe to a house or a public square, and having a space for a communication cable such as an optical fiber cable inside. The present invention relates to a sewage branch joint.

[0002]

2. Description of the Related Art An example in which a communication cable can be laid in an existing sewer pipe is disclosed in Japanese Patent Application Laid-Open No. Hei 10-110465 [E0].
3F3 / 04, F16L3 / 22 3/223, H02
G1 / 06 9/06]. In this conventional sewer pipe, as shown in FIG. 12 (FIG. 1 of Japanese Patent Application Laid-Open No. H10-110465), a support plate member 1a is inserted closer to the upper part of a sewer pipe (existing sewer pipe) 1b. The upper cable housing 1d through which the communication cable 1c passes through the inside of the sewer pipe 1b and the lower sewer flow lower part 1 by the member 1a.
e. The support plate member 1a is formed by pressing the inner surface of the sewer pipe 1b with the support side plate portions 1f formed on both sides, or by bonding the outer surface of the support side plate portion 1f and the inner surface of the sewer pipe 1b. Is held within. Although not shown, the existing sewage pipe 1b is provided with a sewage branch pipe for inflowing drainage from a house or public square.

[0003] By the way, the cable storage section 1 of the sewer pipe 1b.
In the case where the communication cable 1c housed in d is inserted into the inside of the communication cable 1c using the conventional sewage branch pipe and branched toward the side of the house, for example, to the cable storage section 1d and the lower part of the sewage flow 1e, A straddling opening is provided above the sidewall of the sewer pipe 1b. The support plate member 1a is provided with a notch for allowing sewage to flow from the sewage branch pipe, and the sewage pipe 1b
It is necessary to connect a sewage branch pipe to the opening provided in the sewage.

[0004]

However, in such a case, the sewage pipe 1 may be passed through a sewage branch pipe from a place in the house.
The sewage drained to the b side may flow into the cable storage section 1d of the existing sewer pipe 1b, and may contact the communication cable laid there. The reason is that the inside of the conventional sewage branch pipe is not separated into a communication cable space and a drainage space. As a result, there is a problem that the communication cable is deteriorated.

When the communication cable 1c disposed in the cable storage portion 1d of the existing sewer pipe 1b is branched through the sewage branch pipe, the communication cable 1c is connected to the lower part of the sewage flow of the existing sewer pipe 1b. May contact sewage flowing through 1e. Therefore, it is difficult to branch the communication cable 1c disposed in the existing sewer pipe 1b through the sewer branch pipe.

[0006] Therefore, a main object of the present invention is to provide a sewage branch joint in which a communication cable laid in a sewer pipe can be easily branched and the communication cable does not contact the sewage. .

[0007]

SUMMARY OF THE INVENTION The present invention relates to a sewage branch joint for attaching a mounting pipe from a sewer pipe to a house or a public square, which comprises a saddle along an outer surface of the sewer pipe and a branch pipe inserted into the saddle. , And a sewage branch joint provided in the branch pipe and provided with a partition plate for partitioning a communication cable space and a drainage space.

[0008]

[Function] Since the inside of the sewage branch joint is separated into a communication cable space and a drainage space by a partition plate, sewage flowing from the mounting pipe can be drained into the sewage pipe through the drainage space. it can. This allows
The sewage flowing from the attachment pipe can be prevented from flowing into the communication cable space. If the communication cable inserted into the sewer pipe is passed through the communication cable space in the sewer branch joint, the communication cable can be branched to the attachment pipe.

[0009]

According to the present invention, the communication cable does not come into contact with the sewage, so that the deterioration of the communication cable due to the contact with the sewage can be prevented. In addition, the operation of branching the communication cable inserted into the sewer pipe can be easily performed.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A sewage branch joint (hereinafter referred to as a "branch joint") 10 of this embodiment shown in FIG. 1 is connected to a house yard 12 or a public sash as shown in FIGS. 9 and 10, for example. It connects the drainage end of the attached pipe (sewage branch pipe) 14 to the sewage main pipe 16. As shown in FIG. 1, the sewage main pipe 16 has an inner pipe for sewage pipe (hereinafter, referred to as “inner pipe”) 18 inserted therein. This is a downflow space 20. A communication cable mounting portion 18a is formed at the top of the inner tube 18. Communication cable mounting part 1
8 a is formed substantially horizontally in the axial direction of the pipe 16, and a space between the upper surface of the communication cable mounting portion 18 a and the inner surface of the sewage main pipe 16 is formed as a communication cable passage space 22. A plurality of sheath tubes (protective tubes) 28 into which the communication cable 24 is inserted are laid in the communication cable passage space 22. In addition, the sewage main pipe 16, the inner pipe 18, the branch joint 10, the mounting pipe 14, and the house yard 12
Is made of a synthetic resin material such as vinyl chloride or polyethylene, and the communication cables 24 and 26 are, for example, optical fiber cables.

The sewage main pipe 16 into which the inner pipe 18 is inserted is connected to a manhole 30 shown in FIG. A connection box 32 is provided in the manhole 30. The connection box 32 is for connecting each end of the communication cable 24 laid in the communication cable passage space 22 of each sewage main pipe 16 connected to the manhole 30.

[0013] The branch joint 10 is connected to the existing sewer main pipe 1 shown in FIG.
6 can be used for branching the communication cable 24 laid in the communication cable space 22. That is, the connection pipe 14 and the existing sewage main pipe 16 are connected via the branch joint 10, and the communication cable 26 is connected to the communication cable space 22 of the sewage main pipe 16, the branch joint 10, the mounting pipe 14, and Pass through Masu 12 in the house. Then, one end of the communication cable 26 is guided into the connection box 32, and is connected to an end of the predetermined communication cable 24 guided into the connection box 32, thereby branching the communication cable 26 into the residential land. Can be done.

The branch joint 10 includes a branch pipe 34, a partition plate 36
And a saddle 38. As shown in FIGS. 2 and 3, the branch pipe 34 is partitioned by a partition plate 36 whose inside is parallel to the axial direction of the pipe 34, and is divided into an upper communication cable space 40 and a lower drain space 42. Are separated. The drainage space 42 and the communication cable space 40 of the branch pipe 34 where the partition plate 36 is provided have a cross section orthogonal to the axial direction of the branch pipe 34 in the drainage direction of the drainage space 42. It is expanding according to. That is, the partition plate 36 of the branch pipe 34
The portion provided with is expanded in diameter in the drainage direction. A connection pipe 44 for connecting the attachment pipe 14 is provided on the drain side of the branch pipe 34 on the inlet side of the drainage.

The connecting cylinder 44 is of a short cylindrical shape, and the inner end of the outlet of the sewage of the mounting pipe 14 is fitted and connected as shown by a two-dot chain line in FIG. The inlet of the branch pipe 34 connected to the connection tube 44 is also opened in a circular shape. And
The direction in which the cross section orthogonal to the axial direction of the branch pipe 34 expands is
As shown in FIG.
As it goes to the b side, it spreads in a direction 46 corresponding to the axial direction of the sewage main pipe 16. The direction 46 corresponding to the axial direction of the sewer main pipe 16 is a direction parallel to the axial direction of the sewer main pipe 16 in a state where the branch joint 10 is attached to the sewer main pipe 16. In this way, by expanding the outlet 42b of the sewage of the branch pipe 34 beyond the inlet 42a, the base of the base to which the saddle 38 of the drainage space 42 formed in the branch pipe 34 shown in FIG. The cross-sectional area F ′ is made substantially equal to the opening area F at the end of the mounting tube 14 connected to the connection tube 44. This mounting pipe 14
And the cross-sectional area of the opening on the inlet side of the sewage of the branch pipe 34 is the same and is F.

As shown in FIG. 1 to FIG.
It is formed of a resin integrally with the branch pipe 34, is a flat body having a predetermined thickness, and extends from the inlet portion of the sewage of the branch pipe 34 toward the outlet portion, and further slightly from the outlet portion toward the outside. It is protruding. And the branch pipe 3 of the partition plate 36
The edge along the inner surface of 4 is connected to the inner surface.

As shown in FIG. 1, the saddle 38 has a curved shape along the outer surface of the sewage main pipe 16, and is formed by resin molding integrally with the branch pipe 34. The joint of the saddle 38 with the branch pipe 34 is at a predetermined position between the inlet and the outlet of the sewage of the branch pipe 34. Therefore, the branch pipe 34 has a shape inserted through the saddle 38. Then, as shown in FIG. 8A, the saddle 38 is inserted into the branch pipe insertion hole 48 provided in the existing sewage main pipe 16, and the saddle 38 is inserted into the outer surface of the sewage main pipe 16. It is possible to completely cover the branch pipe insertion hole 48 provided in the sewage main pipe 16 with the saddle 38 in the abutted state (the state where the branch joint 10 is attached to the sewage main pipe 16 as shown in FIG. 1). It is formed in the size that can be done.

Further, as shown in FIG.
The opening of the communication cable space 40 on the side of the mounting pipe 14 is closed by a lid 50. As shown in the perspective view of FIG. 6, the lid 50 has a short cylindrical skirt portion 50a, a plate portion 50b for closing an upper opening of the skirt portion 50a, and a short cylindrical shape provided on the plate portion 50b. Projections 52 and 54 are provided.

The skirt portion 50a is in contact with the circular arc portion contacting the inner surface of the branch tube 34 and the upper surface of the partition plate 36 with the lid 50 closing the opening of the communication cable space 40 on the attachment tube 14 side. It is a shape composed of a plate-like portion.

As shown in FIG. 6, a hole 50c for passing a communication cable is formed in the plate portion 50b.
Cylindrical projections 52 and 54 are provided on the upper and lower surfaces of b. The inner holes of the upper and lower projections 52, 54 communicate with the holes 50c, and the inner holes of the respective projections 52, 54 and the holes 50c.
Have the same central axis. As shown in FIG. 7, the outer diameter of the upper projection 52 is fitted over one of the open ends of the sheath tube 56a (56) inserted into the attachment tube 14,
The size to be connected. The outer diameter of the lower projection 54 is fitted over one of the open ends of the sheath tube 56b (56) inserted into the communication cable space 40,
The size to be connected.

Further, an annular packing 58 is attached to the outer periphery of the skirt portion 50a, and water tightness and air tightness are ensured when the cover 50 closes the opening of the communication cable space 40 on the mounting tube 14 side. are doing. A handle 60 is provided on the upper surface of the lid 50.

Next, a procedure for attaching the branch joint 10 to the sewer main pipe 16 will be described. First, as shown in FIG. 8A, a branch pipe insertion hole 48 is provided in the sewage main pipe 16, and a drainage inflow hole 62 is provided in the inner pipe 18. The branch pipe insertion hole 48 is formed over the communication cable passage space 22 and the drainage inflow hole 62. Then, as shown in FIG. 8 (B), the distal end of the sewage outlet side of the branch pipe 34 is inserted into the branch pipe insertion hole 48 and the drainage inflow hole 62, and the saddle 38 is attached to the outer surface of the existing sewage main pipe 16. Adhere. The saddle 38 and the outer surface of the existing sewage main pipe 16 are bonded with an adhesive. Thus, the attachment of the branch joint 10 to the sewer main pipe 16 is completed. Then, the attachment pipe 14 is connected to the connection tube 44 of the branch joint 10, and the joint 64 is connected to the attachment pipe 14.
The home interior 12 is connected via a straight pipe 66 and the like.

After the branch joint 10 is attached to the sewer main pipe 16 or in parallel with the work, the communication cable 2
6 can be performed. That is, for example, the sheath tube 56 through which the communication cable 26 is inserted is passed through the communication cable passage space 22, the branch joint 10, the attachment tube 14, and the in-house casket 12 of the sewage main pipe 16. Then, one end of the communication cable 26 is connected to the manhole 3.
By connecting the communication cable 26 to the end of the predetermined communication cable 24 guided into the connection box 32 inside the connection box 32, the communication cable 26 can be branched into the residential land.

FIG. 7 is a sectional view showing a structure in which the sheath tube 56 (56a, 56b) into which the communication cable 26 is inserted is connected to the lid 50. One of the projections 52 provided on the lid 50 has a sheath tube 56a inserted into the attachment tube 14.
Are covered and fitted together and connected. The other projection 54 is fitted over and fitted with one open end of the sheath tube 56b inserted into the communication cable space 40. The communication cable 26 has an inner hole of the two protrusions 56a and 56b and the lid 5.
It is inserted through a hole 50c formed in the “0”. As shown in FIG. 1, the lid 50
No. 0 is inserted into the opening on the side of the mounting pipe 14 to seal the opening.

Then, with the branch joint 10 attached to the sewer main pipe 16 and the inner pipe 18 provided with the branch pipe insertion hole 48 and the drainage inflow hole 62, as shown in FIG. The sewage outlet side edge is the drainage inflow hole 62
Abuts on the edge of the communication cable mounting portion 18a forming
The upper surface of the partition plate 36 is in contact with the edge of the communication cable mounting portion 18a. Then, the distal end portion 36a of the partition plate 36
Protrudes a little toward the inside of the inner tube 18 from the position of contact with the edge of the communication cable mounting portion 18a. The outlet side of the sewage on the side wall forming the drainage space 42 of the branch pipe 34 projects inside the inner pipe 18.

As described above, the inside of the branch joint 10 is divided into the communication cable space 40 above the partition plate 36 and the drainage space 42 below the partition plate 36.
The sewage outlet side of the partition plate 36 and the side wall of the branch pipe 34 forming the second pipe 2 is inserted into the drainage inflow hole 62 and protrudes toward the inside of the inner pipe 18. Can be drained through the lower drainage space 42 into the inner pipe 18, that is, into the sewage drainage space 20, without flowing into the upper communication cable space 40.

Thus, the sheath tube 56b accommodated in the communication cable space 40 of the branch joint 10 and the communication cable 26 inserted in the sheath tube 56b can be prevented from being wet by sewage. Further, the sheath pipe 28 laid in the communication cable passage space 22 of the existing sewage main pipe 16 and the communication cable 24 inserted through the sheath pipe 28 are also prevented from being wet by the sewage from the attachment pipe 14. can do. This can prevent the communication cables 24 and 26 from being deteriorated due to contact with sewage. The sheath tubes 28, 56a, 56b have a waterproof structure.

Then, the sheath tube 56b and the communication cable 26 inserted through the sheath tube 56b are separated by the partition plate 36.
Can be prevented from contacting the sewage in the communication cable space 40, so that, for example, the sheath pipe 56 inserted into the communication cable passage space 22 or the attachment pipe 14 of the sewage main pipe 16, and the sheath pipe 56 The communication cable 26 inserted into the sheath tube 56 is passed through the communication cable space 40 of the branch joint 10 so that the communication cable 26 does not get wet with the sewage, and the communication cable space of the attachment pipe 14 or the sewage main pipe 16 is provided. The branching operation of the communication cable for guiding the inside of the communication cable 22 can be easily performed.

Then, as shown in FIG.
The cross section orthogonal to the axial direction of the joint of the drainage space 42 of the branch joint 10 expands toward the drainage direction, and the cross-sectional area F ′ of the root portion of the branch joint 10 to which the saddle 38 is attached is attached to the connection tube 44. The opening area F at the end of the connection pipe 14 to be connected is made to match. Therefore, the drainage resistance of the sewage passing through the drainage space 42 can be reduced,
The sewage flow performance that requires the drainage space 42 can be ensured. Therefore, it is possible to eliminate the reduction in the flow-down performance due to the reduction in the cross-sectional area of the drainage space 42 on the inlet side due to the provision of the communication cable space 40 in the branch pipe 34.

Further, as shown in FIG. 1, since the opening of the communication cable space 40 on the side of the mounting pipe 14 can be sealed by the lid 50, even if a large amount of sewage flows down from the mounting pipe 14, Can be prevented from flowing into the communication cable space 40, and the sheath tube 56b and the sheath tube 5 housed in the communication cable space 40 can be prevented.
Deterioration due to contact with the sewage of the communication cable 26 inserted through 6b can be reliably prevented. Of course, this lid 50
The space 2 for communication cable passage of the sewage main pipe 16
2 can be prevented from flowing into the sewage, and the sheath tube 28 laid there and the communication cable 24 inserted through the sheath tube 28 are also prevented from being wet by the sewage from the attachment tube 14. be able to. Also, this lid 5
Since the communication cable 26 can be inserted through the hole 50c provided in the communication cable 26, the communication cable 26 can be relatively easily laid between the communication cable space 40 and the inside of the mounting pipe 14 through the hole 50c. can do.

Further, as shown in FIG. 7, one open end of the sheath tube 56a inserted into the attachment tube 14 can be put on and connected to one projection 52 provided on the lid 50, Then, one open end of the sheath tube 56b inserted into the communication cable space 22 and the communication cable space 40 of the sewage main pipe 16 is connected to the other projection 54 provided on the lid 50 and connected. can do.
Accordingly, the ends of the sheath tubes 56a and 56b inserted into the attachment tube 14 and the communication cable space 40 can be easily connected to each other. In addition, the communication cable 26 is connected to both the sheath tubes 56a and 56b and the lid 50.
The communication cable 26 can be inserted through the holes 50c provided in the housings 50 and the inner holes provided in the projections 52 and 54.
It is possible to surely prevent the contact with the sewage by coating with 54.

As shown in FIG. 1, the branch pipe 34 is
The upper surface at the top of the tube and the lower surface at the bottom of the tube
8 are formed so as to contact the upper and lower edges of the branch joint 8, so that when the branch joint 10 is inserted into the branch pipe insertion hole 48 and attached to the sewage main pipe 16, The circumferential positioning of the tube 16 can be reliably performed.

However, in the above embodiment, as shown in FIG. 3, the left and right side walls 34, 3
4b inclines and spreads at a predetermined angle θ1 of less than 90 ° with respect to the axial direction of the sewage main pipe 16, but instead of this, as shown in FIG. May be formed into a branch pipe 68 that is bent by 90 ° so as to face the direction in which the sewage flows in the sewage main pipe 16. Also in this case, the drainage space 42 of the branch joint 10 is used.
Of the drainage space 42 formed in the branch pipe 68 to which the saddle 38 is attached, the cross-sectional area F ′ of the root portion of the drainage space 42.
Is made to correspond to the opening area F at the end of the mounting tube 14 connected to the connection tube 44.

In the above embodiment, the partition plate 36 and the branch pipe 34 are integrally formed by resin molding. Alternatively, the partition plate 36 and the branch pipe 34 may be separately formed, and the molding may be performed. The partition plate 36 may be fitted and attached to the branch pipe 34, or both may be bonded by bonding with an adhesive.

Although not shown, an inner drainage pipe is inserted inside the branch pipe 34, and the inner side of the inner pipe is used as a drainage space 42 through which sewage flows. Then, the top of the inner tube is formed as a flat partition plate 36. A space between the partition plate 36 and the inner surface of the branch pipe 34 may be formed as a communication cable space 40.

Further, in the above embodiment, as shown in FIG. 3, the portion of the branch pipe 34 where the partition plate 36 is provided is configured such that the diameter thereof is increased in the direction of drainage.
It is good also as a branch pipe of a substantially short cylindrical shape, without using the structure which expanded the diameter.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state in which an embodiment of the present invention is attached to an existing sewage main pipe.

FIG. 2 is a longitudinal sectional view showing the embodiment of FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a diagram showing the embodiment of FIG. 1 as viewed from the inlet side of sewage.

FIG. 5 is a perspective view showing the embodiment of FIG. 1 as viewed from the sewage outlet side.

FIG. 6 is a perspective view showing a lid provided in the embodiment of FIG. 1;

FIG. 7 is an enlarged vertical sectional view showing a lid provided in the embodiment of FIG. 1;

8A and 8B show a procedure for attaching the embodiment of FIG. 1 to a sewage main pipe, wherein FIG. 8A shows a sewage main pipe and an inner pipe in which a branch pipe insertion hole and a drainage inflow hole are formed, and FIG. It is a longitudinal cross-sectional view which shows the state which attaches a branch joint to a pipe and an inner pipe.

FIG. 9 is a view showing a use state of the embodiment in FIG. 1, viewed from an axial direction of a sewage main pipe.

FIG. 10 is a view showing a use state of the embodiment in FIG. 1, viewed from a direction orthogonal to an axial direction of a sewage main pipe.

FIG. 11 is a sectional view of another embodiment of the present invention viewed from the same direction as FIG. 3;

FIG. 12 is a longitudinal sectional view showing a conventional sewage main pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Branch pipe for sewage 12 ... In the house 14 ... Mounting pipe 16 ... Main pipe 24, 26 ... Communication cable 28, 56 (56a, 56b) ... Sheath pipe 34 ... Branch pipe 36 ... Partition plate 38 ... Saddle 40 ... Communication Cable space 42… Drainage space 50… Lid

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshihiko Nakanishi 1-2-47, Shikitsuhigashi, Naniwa-ku, Osaka City F-term (reference) 2D063 BA11 BA22 BA35

Claims (4)

[Claims] 1. A sewage branch joint for attaching a mounting pipe from a sewer pipe to a house or a public square, comprising: a saddle along an outer surface of the sewer pipe; a branch pipe inserted into the saddle; and a branch pipe provided in the branch pipe. A sewage branch joint including a partition plate for separating a communication cable space and a drainage space. 2. The sewage branch joint according to claim 1, wherein a portion of the branch pipe at which the partition portion is provided is expanded in diameter in a drainage direction. 3. A lid having a skirt portion along the partition plate and the branch pipe and a plate portion for closing an inner hole of the skirt portion, and further having a cover formed with a hole for communication cable passage in the plate portion. The sewage branch joint according to claim 1 or 2, further comprising: 4. The sewage branch joint according to claim 3, further comprising an inner hole communicating with the hole, and a cylindrical projection formed on both side surfaces of the plate portion so as to cover an end of a sheath tube of the communication cable. .