JP6564321B2 - Drainage pipe structure and joint used in the drainage pipe structure - Google Patents

Description

  The present invention relates to a drainage pipe structure that guides drainage flowing out from a building downstream, and a joint used in the drainage pipe structure.

  In recent years, in large urban areas, a space between a boundary with a neighboring land and a building is narrow, and it is difficult to construct a drainage pipe structure for treating drainage flowing out from a building. For this reason, in the construction of the drainage pipe structure, there is an increasing demand to bury the drainage main pipe buried in parallel with the wall surface of the building as close as possible to the building.

  For example, Patent Document 1 discloses a drainage dredge apparatus in which an elbow body is integrally attached to a branch pipe formed in a dredger body. Thus, by attaching the elbow body integrally to the branch pipe, it becomes possible to join the drainage to the main body.

Japanese Utility Model Publication No. 3-93890

  However, as shown in FIG. 6, when the drainage device 110 as described above is employed, the distance Lx between the side wall surface 102 of the building and the drainage main pipe 104 is the depth dimension in the elbow pipe 120 as a joint. Therefore, as long as the conventional elbow pipe 120 is used, there is a limit in reducing the separation distance Lx.

  Accordingly, an object of the present invention is to provide a drainage pipe structure in which a pipe embedded around a building can be constructed as close as possible to the side wall surface of the building, and a joint used in the drainage pipe structure. .

The present invention includes a joint having a straight pipe-shaped inflow side connection part and a straight pipe-shaped outflow side connection part, and the inflow side connection part of the joint protrudes from the side wall surface of the building. A drainage pipe structure in which the outflow side connection part of the joint is connected to a straight pipe-shaped downstream pipe connection part located on the downstream side of the joint, The inflow side connection portion opens laterally toward the side wall surface, and the outflow side connection portion of the joint is positioned below the inflow side connection portion and faces the downstream side pipe connection portion. And at least a part of the outflow side connection portion is arranged at a position closer to the side wall surface than the downstream end of the inflow side connection portion , and the inflow An end portion on the side wall surface side including an end surface of the side connection portion, and the side of the outflow side connection portion And the end surface side is a drain pipe structure, characterized in that located on the same imaginary line along the vertical direction.

  In such a configuration, it is possible to arrange the downstream side pipe connection portion closer to the side wall surface of the building than in the past. That is, in order to connect a joint to the drainage outflow part protruding from the side wall surface, the inflow side connection part of the joint needs to be a straight pipe shape. In this case, at least a part of the outflow side connection portion is arranged at a position closer to the side wall surface side than the downstream end portion of the inflow side connection portion. Therefore, by adopting such a configuration, it is possible to embed a pipe (for example, a drainage main pipe) or the like communicating with the downstream pipe connecting portion as close as possible to the side wall surface of the building.

  Here, an intermediate portion that guides the drainage flowing through the inflow side connection portion to the outflow side connection portion is provided at the downstream end of the inflow side connection portion in the joint, and in the intermediate portion, It is desirable that an inner bulging peripheral wall portion that has a curved shape that bulges toward the side wall surface side and that approaches the side wall surface side toward the downstream side is formed at a position facing the side wall surface.

  In such a configuration, the outflow side connection portion can be suitably disposed near the side wall surface of the building, and the drainage flowing through the joint can be smoothly flowed down from upstream to downstream. In addition, since the outflow side connecting portion is disposed immediately below the inner bulging peripheral wall portion, it is possible to reduce the height dimension of the joint in the vertical direction as much as possible, and the drainage pipe structure as a whole. Can be made compact.

  Furthermore, an outer retreating peripheral wall portion that approaches the side wall surface side toward the downstream side is formed at a position facing the inner bulging peripheral wall portion in the intermediate portion of the joint, and the inner surface of the outer retreating peripheral wall portion Is preferably formed of a curved surface inclined downward from the upstream side to the downstream side.

  In such a configuration, since the concave portion where the drainage is accumulated is not formed from the upstream end to the downstream end of the joint, the drainage flowing into the joint is upstream. It can be smoothly flowed down from the downstream.

  And this invention is a coupling used for the said piping structure, Comprising: It is an integrally molded article which consists of non-flexible materials, It is a coupling characterized by the above-mentioned.

  By adopting such a joint, the above-described piping structure can be easily constructed.

  The drainage pipe structure of the present invention has an effect that the drainage pipe buried around the building can be constructed as close as possible to the side wall surface of the building.

  Moreover, the joint of this invention has an effect which can construct | assemble the above-mentioned piping structure easily.

1 is a schematic diagram illustrating a drain piping structure according to Embodiment 1. FIG. It is a perspective view which shows the outline | summary of a coupling. An outline of a joint is shown, (a) is a front view, (b) a rear view, (c) is a plan view, and (d) is a bottom view. It is an expanded longitudinal cross-sectional view which shows the modification of a coupling. 5 is a schematic diagram showing a drainage pipe structure according to Embodiment 2. FIG. It is explanatory drawing which shows the conventional drain piping structure.

  Hereinafter, the embodiment which materialized the drain piping structure of the present invention and the joint used for the drain piping structure is described in detail. The drainage pipe structure of the present invention is not limited to the drainage pipe structures 1A and 1B shown below, and the design can be changed as appropriate. Similarly, the joint of the present invention is not limited to the joints 20A, 20B, and 20C shown below, and the design can be changed as appropriate.

[Example 1]
A drainage pipe structure 1A of the present embodiment will be described with reference to FIG.
As shown in FIG. 1, the drainage piping structure 1 </ b> A has a piping structure for discharging wastewater discharged from a building to piping (for example, the drainage main pipe 5) embedded outside the building.

  More specifically, for example, on the side wall surface 2 standing along the substantially vertical direction of the building, a drainage outflow portion 4 having a straight pipe shape and substantially horizontal is provided so as to protrude outward. From the drainage outflow portion 4, drainage discharged from the drainage facility in the building flows out. In addition, the said side wall surface 2 shall also include the side surface of the foundation in a building, for example, and the drainage outflow part 4 may be comprised with what is called a sleeve.

  A joint 20 </ b> A is attached to the drainage outflow portion 4. Specifically, a straight pipe-shaped inflow side connection portion 21 as shown in FIGS. 1 to 3 is formed at the upstream end of the joint 20A, and the inflow side connection portion 21 is the drainage outflow portion. 4 is connected.

  A drainage drain 10 is attached to the downstream side of the joint 20 </ b> A via an elbow portion 14. Specifically, a straight pipe-shaped outflow side connection portion 22 as shown in FIGS. 1 to 3 is formed at the downstream end of the joint 20A, and the outflow side connection portion 22 is substantially in the vertical direction. The elbow part 14 is attached through a straight pipe (hidden and cannot be seen) as a relay member along.

  Further, a drain main 5 buried in the building is connected to the drain 10 and the drain main 5 is connected to a not shown sewage main.

  In such a configuration, the waste water discharged from the building flows into the joint 20A through the inflow side connection portion 21 that opens laterally toward the side wall surface 2, and then opens downward toward the elbow portion 14. It flows into the elbow part 14 through the outflow side connection part 22, and flows into the drainage basin 10 and is guided to the sewage main pipe through the drainage main pipe 5.

  Here, as shown in FIG. 1, in the joint 20A, the end portion on the side wall surface 2 side of the outflow side connection portion 22 is arranged at a position close to the side wall surface 2 side, and the separation distance L1 Becomes as small as possible, and the drainage main pipe 5 can be buried at a position as close as possible to the side wall surface 2.

  Next, the joint 20B according to the modification will be described in detail. The joint 20B is slightly different in appearance from the joint 20A shown in FIGS. 1 to 3, and a shape that takes into account the manufacturing process is adopted. This will be described in detail below.

  As shown in FIG. 4, an intermediate portion 30 is formed to extend from the downstream end portion 21 a of the inflow side connection portion 21 in the joint 20 </ b> B, and flows through the inflow side connection portion 21 by the guiding action of the intermediate portion 30. Drainage is guided downward. Further, an outflow side connecting portion 22 is formed to extend from the downstream end of the intermediate portion 30. The outflow side connection portion 22 is connected to the elbow portion 14 via a straight pipe-shaped downstream side pipe connection portion 15. In addition, the pipe diameter of the inflow side connection part 21 and the pipe diameter of the outflow side connection part 22 are made into the same dimension. Moreover, the tube axis in the inflow side connection part 21 is along the substantially horizontal direction, and the end surface in the inflow side connection part 21 is formed along the substantially vertical direction. Further, the tube axis in the outflow side connection portion 22 is substantially along the vertical direction, and the end face of the outflow side connection portion 22 is formed in the substantially horizontal direction.

  As shown in FIG. 4, an inner bulging peripheral wall portion 31 is formed in the intermediate portion 30 at a position immediately below the inflow side connection portion 21 and facing the side wall surface 2. The inner bulging peripheral wall portion 31 has a curved shape that swells toward the side wall surface 2 side of the building, and approaches the side wall surface 2 side as it goes downstream.

  For example, in FIG. 4, the inner bulging peripheral wall portion 31 is configured by a curved convex surface that is convex outward with respect to the inside of the joint 20 </ b> B.

  And the outflow side connection part 22 is formed in the downstream end part 31a of the inner side bulging peripheral wall part 31 continuously.

  On the other hand, in the intermediate portion 30, an outer bulging peripheral wall portion 34 is formed at a position extending from the inflow side connection portion 21 along the direction away from the side wall surface 2. The outer bulging peripheral wall portion 34 has a curved shape that bulges in a direction away from the side wall surface 2 toward the downstream side.

  Further, an outer retreating peripheral wall portion 35 is formed in the intermediate portion 30 at a position immediately below the outer bulging peripheral wall portion 34 and facing the inner bulging peripheral wall portion 31. The outer retreating peripheral wall portion 35 is closer to the side wall surface 2 as it goes downstream, and the inner surface of the outer retreating peripheral wall portion 35 is configured by a curved surface that is inclined downward from the upstream side to the downstream side.

  The outflow side connecting portion 22 is formed on the downstream side of the outer retreating peripheral wall portion 35.

  In the joint 20B, the end on the side wall surface 2 side including the end surface of the inflow side connection portion 21 and the end portion on the side wall surface 2 side of the outflow side connection portion 22 are virtually along the vertical direction. Located on line P.

  Such a joint 20B has no part where the inner diameter of the joint 20B is extremely reduced and the flow rate is restricted, and there is no hollow part on the inner peripheral surface, so that drainage does not accumulate in the joint 20B. Drainage flows smoothly from upstream to downstream.

  The joint 20 </ b> B has a structure in which an inner bulging peripheral wall portion 31 is disposed immediately below the inflow side connection portion 21, and a straight pipe-shaped portion is formed between the inflow side connection portion 21 and the outflow side connection portion 22. Therefore, the distance h (see FIG. 4) between the inflow side connection portion 21 and the outflow side connection portion 22 can be made as small as possible, and the drainage pipe structure 1A can be made compact as a whole. Can do.

  Furthermore, as described above, the end portion on the side wall surface 2 side including the end surface of the inflow side connection portion 21 and the end portion on the side wall surface 2 side of the outflow side connection portion 22 are substantially imaginary lines P along the vertical direction. Since the structure is located on the upper side, when the inflow side connection portion 21 of the joint 20B is inserted and connected to the drainage outflow portion 4 protruding from the side wall surface 2 standing substantially vertically, the inflow side connection portion 21 is When connected to the proper position, the end of the outflow side connecting portion 22 on the side wall surface 2 side is placed at the proper position closest to the side wall surface 2. For this reason, the joint 20B can make the outflow side connection portion 22 as close as possible to the side wall surface 2 side, and the inner bulging peripheral wall portion 31 interferes with the side wall surface 2 when connected to the drainage outflow portion 4. Can be prevented.

  When the end on the side wall surface 2 side of the outflow side connection portion 22 comes closer to the side wall surface 2 than the end on the side wall surface 2 side including the end surface of the inflow side connection portion 21, the inflow side relatively The separation distance between the connection portion 21 and the side wall surface 2 is increased, the bonding length between the inflow side connection portion 21 and the drainage outflow portion 4 is shortened, and the bonding strength is reduced.

  The joint 20B is preferably integrally formed using an inflexible resin material. For example, a joint 20B made of vinyl chloride can be suitably selected. By setting it as this structure, it can prevent that the coupling | joint 20B bends in a use condition and the site | part in which waste_water | drain retains arises.

[Example 2]
The drainage pipe structure 1B of Example 2 will be described with reference to FIG. In addition, what has the structure similar to Example 1 attaches | subjects the same code | symbol, and abbreviate | omits or abbreviate | omits description.

  As shown in FIG. 5, the joint 20 </ b> C in the drainage pipe structure 1 </ b> B is provided on the downstream side of the first inflow side connection portion 24 having a straight pipe shape connected to the drainage outflow portion 4 and the first inflow side connection portion 24. And an intermediate portion 36 formed.

  Further, the intermediate portion 36 is composed of an upstream outer parallel peripheral wall portion 37 and a downstream outer retreat peripheral wall portion 35.

  The outer parallel peripheral wall portion 37 has a surface parallel to the side wall surface 2, and a straight pipe-shaped second inflow side connection portion 25 opened in a substantially vertical direction is formed on the upper surface thereof. The second inflow side connecting portion 25 is connected to another drainage outflow portion 51 different from the drainage outflow portion 4.

  As in this configuration, a plurality of inflow side connection portions 24 and 25 may be formed for a single joint 20C. However, also in the joint 20 </ b> C, portions corresponding to the outer retreating peripheral wall portion 35 and the inner bulging peripheral wall portion 31 in the intermediate portion 36 have a curved shape in which a straight pipe-shaped portion is not formed.

  In the first and second embodiments described above, the dimensional shape of each part can be freely selected as appropriate. For example, the curved shapes of the inner bulging peripheral wall portion 31 and the outer retreating peripheral wall portion 35 may be other forms. However, it is desirable that the drainage flow smoothly from the upstream to the downstream, the drainage does not stay in the joints 20A and 20B, and the strength can be sufficiently secured.

1A, 2A Drainage pipe structure 2 Side wall surface 4 Drainage outflow portion 14 Downstream pipe connection portion 20A, 20B Joint 21 Inflow side connection portion 21a End portion 22 Outflow side connection portion 30 Intermediate portion 31 Inner bulging peripheral wall portion 31a End portion 35 Outside Retreating peripheral wall

Claims (4)

A straight pipe-shaped drainage outflow part having a straight pipe-shaped inflow side connection part and a straight pipe-shaped outflow side connection part, wherein the inflow side connection part of the joint protrudes from the side wall surface of the building A drainage pipe structure in which the outflow side connection part of the joint is connected to a straight pipe-shaped downstream pipe connection part located on the downstream side of the joint,
The inflow side connection portion of the joint is opened sideways toward the side wall surface,
The outflow side connection part of the joint is located below the inflow side connection part and opens downward toward the downstream side pipe connection part,
At least a part of the outflow side connection portion is disposed at a position closer to the side wall surface side than the downstream end portion of the inflow side connection portion, and includes the end surface of the inflow side connection portion. A drainage pipe structure , wherein an end portion on the side wall surface side and an end portion on the side wall surface side of the outflow side connection portion are located on the same imaginary line along the vertical direction . At the downstream end of the inflow side connection portion in the joint,
An intermediate portion is provided for guiding drainage flowing through the inflow side connection portion to the outflow side connection portion;
An inner bulging peripheral wall portion that has a curved shape that bulges toward the side wall surface side and approaches the side wall surface side toward the downstream side is formed at a position facing the side wall surface in the intermediate portion. The drain piping structure according to claim 1. An outer retreating peripheral wall portion that approaches the side wall surface side toward the downstream side is formed at a position facing the inner bulging peripheral wall portion in the intermediate portion of the joint, and the inner surface of the outer retreating peripheral wall portion is The drainage pipe structure according to claim 2, wherein the drainage pipe structure is configured by a curved surface inclined downward from the upstream side to the downstream side. A joint used in the drainage pipe structure according to any one of claims 1 to 3,
A joint characterized by being an integrally molded product made of a non-flexible material.

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