JP5191216B2 - Double pipe joint and basic through-piping structure using the same - Google Patents

Double pipe joint and basic through-piping structure using the same Download PDF

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JP5191216B2
JP5191216B2 JP2007301176A JP2007301176A JP5191216B2 JP 5191216 B2 JP5191216 B2 JP 5191216B2 JP 2007301176 A JP2007301176 A JP 2007301176A JP 2007301176 A JP2007301176 A JP 2007301176A JP 5191216 B2 JP5191216 B2 JP 5191216B2
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pipe
sheath
pipe joint
joint
tube
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JP2009127681A (en
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謙一郎 今久保
毅博 小林
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Kubota CI Co Ltd
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  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
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Description

この発明は、二重管継手、およびそれを用いる基礎貫通配管構造に関し、特にたとえば、建築物の基礎を貫通し、屋内排水管と屋外排水管とを接続する、二重管継手、およびそれを用いる基礎貫通配管構造に関する。 The present invention, the double pipe joint relates Contact and basic through piping structure using the same, particularly for example, through the foundation of the building, connecting the indoor drain pipe and outdoor discharge pipe, double pipe fittings, Contact and It relates to a basic through-piping structure using the same.

住設機器からの排水を屋外に排出する方法の一例として、建築物の基礎を貫通する鞘管内に内管を挿通して、屋内の排水管と屋外の排水管とを接続する方法が知られている。たとえば、特許文献１の技術では、詳細は記載されていないが、建築物のべた基礎を貫通する鞘管内に、内管として機能する曲がり可能な小径管を挿脱可能に挿通して、小径管と屋内の排水管とを、ならびに小径管と屋外の排水管とを接着接合等によって接続している。
特許第３５９２６５８号公報［Ｅ０３Ｃ １／１１２］ As an example of a method for discharging wastewater from residential equipment to the outdoors, a method of connecting an indoor drainage pipe and an outdoor drainage pipe by inserting an inner pipe into a sheath pipe that penetrates the foundation of a building is known. ing. For example, in the technology of Patent Document 1, although not described in detail, a small-diameter pipe that can be inserted and removed is inserted into a sheath pipe that penetrates the solid foundation of a building so as to be able to be inserted and removed. And a small-diameter pipe and an outdoor drain pipe are connected by adhesive bonding or the like.
Japanese Patent No. 3592658 [E03C 1/112]

特許文献１の従来技術では、内管と屋内外の排水管とは、接着接合等によって接続される。しかしながら、内管は挿脱可能な状態で鞘管に挿通されるため、たとえば内管と屋外の排水管とを接続する際に、屋内側の排水管を固定しておかないと内管が鞘管内の方向に移動してしまう。また、内管は可撓性を有するため、屋内側の排水管を固定しても、内管が鞘管内で撓んでしまい、排水性能が低下する可能性がある。したがって、特許文献１の技術では、内管と屋外の排水管とを適切に接続することができない。   In the prior art of Patent Document 1, the inner pipe and the indoor / outdoor drain pipe are connected by adhesive bonding or the like. However, since the inner pipe is inserted into the sheath pipe in a removable state, for example, when connecting the inner pipe and the outdoor drain pipe, the inner pipe must be secured unless the indoor drain pipe is fixed. It will move in the direction of the tube. Moreover, since the inner pipe has flexibility, even if the indoor drain pipe is fixed, the inner pipe may be bent in the sheath pipe and the drainage performance may be lowered. Therefore, with the technique of patent document 1, an inner pipe and an outdoor drain pipe cannot be connected appropriately.

それゆえに、この発明の主たる目的は、新規な、二重管継手、およびそれを用いる基礎貫通配管構造を提供することである。 Another object of the invention is novel, double pipe joint is to provide a contact and basic through piping structure using the same.

この発明の他の目的は、内管と屋外排水管との接続を適切に行うことができる、二重管継手、およびそれを用いる基礎貫通配管構造を提供することである。 Another object of the invention, it is possible to connect the inner tube and the outdoor discharge pipe properly, the double pipe joint is to provide a contact and basic through piping structure using the same.

この発明は、上記の課題を解決するために、以下の構成を採用した。なお、括弧内の参照符号および補足説明等は、この発明の理解を助けるために後述する実施形態との対応関係を示したものであって、この発明を何ら限定するものではない。   The present invention employs the following configuration in order to solve the above problems. Note that reference numerals in parentheses, supplementary explanations, and the like indicate correspondence with embodiments to be described later in order to help understanding of the present invention, and do not limit the present invention.

第１の発明は、建築物の基礎を貫通し、屋内排水管と屋外排水管とを接続する二重管継手であって、鞘管、鞘管内に挿通される内管、および鞘管の端部に係合手段により固定され、内管に接続される管継手を備え、管継手を係合手段により鞘管の端部に固定することによって、それと同時に第１受口の内部に内管がゴム輪を介して挿入接続され、係合手段は、互いに対応する突起と溝とを含み、鞘管と管継手とを着脱自在に係合し、係合時には、突起を溝に収容することによって管継手を管軸方向の両方向への動きを防止した状態で鞘管に固定する、二重管継手である。 1st invention is a double pipe joint which penetrates the foundation of a building and connects an indoor drain pipe and an outdoor drain pipe, Comprising: The sheath pipe, the inner pipe penetrated in a sheath pipe, and the end of a sheath pipe parts are fixed by the engagement means comprises a pipe joint which is connected to the inner tube, by fixing the end portion of the sheath tube by engaging means pipe joint therewith the inner tube inside the first receptacle simultaneously Inserted and connected via a rubber ring, the engaging means includes a protrusion and a groove corresponding to each other, detachably engages the sheath tube and the pipe joint, and stores the protrusion in the groove when engaged. It is a double pipe joint which fixes a pipe joint to a sheath pipe in the state which prevented the movement to the both directions of a pipe-axis direction.

第１の発明では、二重管継手（１０）は、建築物の基礎（１２０）を貫通する鞘管（１２）、鞘管の内部に挿通される内管（１６）および鞘管の屋外側の端部（２２）に固定される管継手（１４）を含み、屋内排水管（１２２）と屋外排水管（１２４）とを接続する。鞘管は、ポリエチレンなどの合成樹脂からなり、たとえば、別体に成形された第１鞘管部（１８）および第２鞘管部（２０）を組み合わせることによって形成される。たとえば、第１鞘管部は、その一端が屋内に開口する。たとえば、第２鞘管部は、第１鞘管部の他端から連通して、屋外に開口する。第２鞘管部は、鞘管の屋外側の端部を含み、端部には、管継手が固定される。管継手は、塩化ビニルなどの合成樹脂によって円筒状に形成され、内管と屋外排水管とを接続する。管継手の一方端には、第１受口（６０）が形成される。第１受口は、第２鞘管部に挿入されて、鞘管に固定される。また、たとえば、第１受口の内部には、内管が挿入されて、内管が接続される。このように、管継手が鞘管１２の屋外側の端部に固定されるため、管継手に接続する内管も、鞘管の屋外側の端部に固定される。   In the first invention, the double pipe joint (10) includes a sheath pipe (12) penetrating the building foundation (120), an inner pipe (16) inserted through the inside of the sheath pipe, and an outer side of the sheath pipe. A pipe joint (14) fixed to the end (22) of the indoor drain pipe (122) is connected to the outdoor drain pipe (124). The sheath tube is made of a synthetic resin such as polyethylene, and is formed, for example, by combining the first sheath tube portion (18) and the second sheath tube portion (20) formed separately. For example, one end of the first sheath tube portion opens indoors. For example, the second sheath tube portion communicates from the other end of the first sheath tube portion and opens outdoors. The second sheath pipe part includes an end part on the outdoor side of the sheath pipe, and a pipe joint is fixed to the end part. The pipe joint is formed in a cylindrical shape from a synthetic resin such as vinyl chloride, and connects the inner pipe and the outdoor drain pipe. A first receiving port (60) is formed at one end of the pipe joint. The first receiving port is inserted into the second sheath tube portion and fixed to the sheath tube. Further, for example, an inner tube is inserted into the first receiving port, and the inner tube is connected. In this way, since the pipe joint is fixed to the end portion on the outdoor side of the sheath tube 12, the inner pipe connected to the pipe joint is also fixed to the end portion on the outdoor side of the sheath pipe.

第１の発明によれば、鞘管内での内管の位置が固定されるため、管継手に屋外排水管を接続する際に、内管が鞘管内の方向に移動しない。したがって、屋内排水管側で内管を固定しなくても、内管と屋外排水管との接続を適切に行うことができる。   According to 1st invention, since the position of the inner pipe in a sheath pipe is fixed, when connecting an outdoor drainage pipe to a pipe joint, an inner pipe does not move in the direction in a sheath pipe. Accordingly, the inner pipe and the outdoor drain pipe can be appropriately connected without fixing the inner pipe on the indoor drain pipe side.

第２の発明は、第１の発明に従属し、鞘管と管継手とに当接するシール材をさらに備え、管継手を係合手段により鞘管の端部に固定することによって、それと同時に第１受口の内部に内管がゴム輪を介して挿入接続され、かつ管継手と鞘管との隙間がシール材によって水密状態でシールされるようにした。 A second invention is dependent on the first invention and further comprises a seal member that abuts the sheath pipe and the pipe joint, and the pipe joint is fixed to the end of the sheath pipe by the engaging means. The inner pipe was inserted and connected to the inside of one receiving port via a rubber ring, and the gap between the pipe joint and the sheath pipe was sealed in a watertight state by a sealing material.

第３の発明は、第１または２の発明に従属し、管継手は、鞘管内に挿通される直管部を有し、直管部の先端が前記内管に接続される。 A third invention is dependent on the first or second invention, and the pipe joint has a straight pipe portion inserted into the sheath pipe, and a tip of the straight pipe portion is connected to the inner pipe.

第４の発明は、第１ないし３のいずれかの発明の二重管継手を用いて建築物の基礎を貫通し、屋内排水管と屋外排水管とを接続する、基礎貫通配管構造であり、第１ないし第４のいずれかの発明と同様の効果を奏する。
第５の発明は、第４の発明に従属し、管継手は鞘管の屋外側の端部に固定され、鞘管をその屋外側の管端が基礎の屋外側の側面と面一になるように配置した。 4th invention is the foundation penetration piping structure which penetrates the foundation of a building using the double pipe joint of any invention of the 1st thru / or 3, and connects an indoor drain pipe and an outdoor drain pipe, The same effects as in any one of the first to fourth inventions are achieved.
5th invention is dependent on 4th invention, a pipe joint is fixed to the edge part of the outdoor side of a sheath pipe, and the pipe end of the outdoor side of a sheath pipe becomes flush with the side of the outdoor side of a foundation Arranged.

この発明によれば、鞘管内での内管の位置が固定されるため、内管と屋外排水管との接続を適切に行うことができる。   According to this invention, since the position of the inner pipe within the sheath pipe is fixed, the inner pipe and the outdoor drain pipe can be appropriately connected.

この発明の上述の目的，その他の目的，特徴および利点は、図面を参照して行う以下の実施例の詳細な説明から一層明らかとなろう。   The above object, 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.

図１および図２を参照して、この発明の一実施例である二重管継手１０は、鞘管１２、管継手１４および内管１６を備え、建築物の基礎１２０を貫通して、屋内排水管１２２と屋外排水管１２４とを接続する。   1 and 2, a double pipe joint 10 according to an embodiment of the present invention includes a sheath pipe 12, a pipe joint 14, and an inner pipe 16, and penetrates a building foundation 120 to form an indoor structure. The drain pipe 122 and the outdoor drain pipe 124 are connected.

図３に示すように、鞘管１２は、ポリエチレンなどの合成樹脂からなり、たとえば、ブロー成形によって別体に成形された第１鞘管部１８および第２鞘管部２０を組み合わせることによって、略Ｌ字状に形成される。ただし、第１鞘管部１８と第２鞘管部２０とを一体に成形して、鞘管１２を形成してもよい。第１鞘管部１８は、垂直方向に延びて、その一端が屋内に開口する。第２鞘管部２０は、第１鞘管部１８の他端から水平方向に延びて、屋外に開口する。第２鞘管部２０は、鞘管１２の屋外側の端部２２を含み、端部２２には、詳細は後述する管継手１４が固定される（図２参照）。   As shown in FIG. 3, the sheath tube 12 is made of a synthetic resin such as polyethylene. For example, by combining the first sheath tube portion 18 and the second sheath tube portion 20 which are separately molded by blow molding, It is formed in an L shape. However, the sheath tube 12 may be formed by integrally molding the first sheath tube portion 18 and the second sheath tube portion 20. The first sheath pipe portion 18 extends in the vertical direction, and one end thereof opens indoors. The second sheath tube portion 20 extends in the horizontal direction from the other end of the first sheath tube portion 18 and opens outdoors. The 2nd sheath pipe part 20 contains the edge part 22 by the side of the outdoor of the sheath pipe 12, and the pipe joint 14 mentioned later for details is fixed to the edge part 22 (refer FIG. 2).

図４に示すように、第１鞘管部１８は、垂直方向に延びる第１筒部２４を含み、詳細は後述する屈曲内管部８４および第１内管部８６を収容する。第１筒部２４は、たとえば、垂直方向の断面が馬蹄形状を有する筒状に形成される。また、第１筒部２４の下端である底面には、詳細は後述する屈曲内管部８４の当接部９４が当接する。   As shown in FIG. 4, the 1st sheath pipe part 18 contains the 1st cylinder part 24 extended in a perpendicular direction, and accommodates the bending inner pipe part 84 and the 1st inner pipe part 86 which are mentioned later for details. The 1st cylinder part 24 is formed in the cylinder shape in which the cross section of a perpendicular direction has a horseshoe shape, for example. Further, a contact portion 94 of a bent inner tube portion 84, which will be described in detail later, is in contact with the bottom surface which is the lower end of the first tube portion 24.

第１筒部２４の一端は、垂直上方向に開口しており、そこに屋内に開口する第１開口部２６が形成される。第１開口部２６は、第１筒部２４よりも大きな径の短円筒状に形成され、第１筒部２４の上端から段差状に拡径する。たとえば、第１開口部２６の呼び径は１７０ｍｍである。   One end of the first cylinder portion 24 is open vertically upward, and a first opening portion 26 that opens indoors is formed there. The first opening 26 is formed in a short cylindrical shape having a larger diameter than the first cylindrical portion 24, and expands in a step shape from the upper end of the first cylindrical portion 24. For example, the nominal diameter of the first opening 26 is 170 mm.

また、第１筒部２４の他端は、水平方向に開口しており、そこに水平方向に向けて短円筒状に突出する第２開口部２８が形成される。たとえば、第２開口部２８の呼び径は１２０ｍｍである。また、たとえば、第２開口部２８の内周面には、後述する第２鞘管部２０に形成される雄ネジ４２と螺合する、雌ネジ３０が形成される。   Moreover, the other end of the 1st cylinder part 24 is opened in the horizontal direction, and the 2nd opening part 28 which protrudes in a short cylindrical shape toward the horizontal direction is formed there. For example, the nominal diameter of the second opening 28 is 120 mm. Further, for example, on the inner peripheral surface of the second opening portion 28, a female screw 30 that is screwed with a male screw 42 formed on the second sheath tube portion 20 described later is formed.

さらに、第１筒部２４には、配筋固定部３２が形成される。配筋固定部３２は、第１筒部２４の外周面から外側に突出する板状に形成され、鞘管１２を建築物の基礎型枠に設ける際に、配筋１２６或いは別途配筋１２６に設けられる鞘管１２固定用の固定筋１２８を挟み込むことで、第１鞘管部１８と配筋１２６とを固定する。   Further, a bar arrangement fixing portion 32 is formed in the first tube portion 24. The bar arrangement fixing portion 32 is formed in a plate shape that protrudes outward from the outer peripheral surface of the first tube portion 24. When the sheath tube 12 is provided on the foundation formwork of the building, the bar arrangement 126 or the additional bar arrangement 126 is provided. The first sheath tube portion 18 and the reinforcing bar 126 are fixed by sandwiching the fixing muscle 128 for fixing the sheath tube 12 provided.

上述したように、第１鞘管部１８には、水平方向に延びて、屋外に開口する第２鞘管部２０が接続される（図１参照）。   As described above, the first sheath tube portion 18 is connected to the second sheath tube portion 20 that extends in the horizontal direction and opens outdoors (see FIG. 1).

図５および図６に示すように、第２鞘管部２０は、第２筒部３４を含む。第２筒部３４は、水平方向に延びる円筒状に形成され、たとえばその呼び径は１００ｍｍであり、その長さは２６０ｍｍである。第２筒部３４には、リブ３６が形成される。リブ３６は、第２筒部３４の管壁を外側に突き出して形成され、第２筒部３４の外面から環状に突出する。リブ３６は、第２筒部３４の管軸方向に等間隔をあけて複数（この実施例では５つ）形成され、第２筒部３４の剛性を高める。   As shown in FIGS. 5 and 6, the second sheath tube portion 20 includes a second tube portion 34. The 2nd cylinder part 34 is formed in the cylindrical shape extended in a horizontal direction, for example, the nominal diameter is 100 mm, and the length is 260 mm. Ribs 36 are formed on the second cylindrical portion 34. The rib 36 is formed by projecting the tube wall of the second cylindrical portion 34 outward, and protrudes annularly from the outer surface of the second cylindrical portion 34. A plurality of ribs 36 (five in this embodiment) are formed at equal intervals in the tube axis direction of the second cylindrical portion 34 to enhance the rigidity of the second cylindrical portion 34.

また、第２筒部３４の両端は、水平方向に向けて開口しており、そこに短円筒状の第３開口部３８および第４開口部４０がそれぞれ形成される。   Further, both ends of the second cylindrical portion 34 are opened in the horizontal direction, and a short cylindrical third opening 38 and a fourth opening 40 are formed therein, respectively.

第３開口部３８は、第２筒部３４の一端に形成され、第１鞘管部１８の第２開口部２８に挿入して接続される。たとえば、第３開口部３８の外面には、上述の雌ネジ３０と螺合する雄ネジ４２が形成される。   The third opening 38 is formed at one end of the second cylindrical portion 34 and is inserted into and connected to the second opening 28 of the first sheath tube portion 18. For example, on the outer surface of the third opening 38, a male screw 42 that is screwed with the above-described female screw 30 is formed.

また、第４開口部４０は、第２筒部３４の他端に形成され、第２筒部３４の端から段差状に少し拡径する。たとえば、第４開口部４０の呼び径は、１３５ｍｍである。第４開口部４０は、鞘管１２の屋外側の端部２２を含み、屋外に開口する。   The fourth opening 40 is formed at the other end of the second cylindrical portion 34 and slightly expands in a step shape from the end of the second cylindrical portion 34. For example, the nominal diameter of the fourth opening 40 is 135 mm. The fourth opening 40 includes the end 22 on the outdoor side of the sheath tube 12 and opens to the outdoors.

鞘管１２の屋外側の端部２２には、詳細は後述する、管継手１４を固定するための係止部４４が形成される。係止部４４は、環状係止部４６、第１係止部４８および第２係止部５０を含む。環状係止部４６は、第４開口部４０の管壁を内側に窪ませて形成され、第４開口部４０の内面から環状に突出する。   A locking portion 44 for fixing the pipe joint 14, which will be described in detail later, is formed at the end portion 22 on the outdoor side of the sheath tube 12. The locking part 44 includes an annular locking part 46, a first locking part 48 and a second locking part 50. The annular locking portion 46 is formed by recessing the tube wall of the fourth opening 40 inward, and protrudes annularly from the inner surface of the fourth opening 40.

また、環状係止部４６よりも少し端部２２側には、第１係止部４８および第２係止部５０が形成される。環状係止部４６と第１係止部４８および第２係止部５０との間には、詳細は後述する管継手１４の係合部６８を収容する係止溝５２が形成される。第１係止部４８および第２係止部５０は、第４開口部４０の管壁を内側に窪ませて形成され、第４開口部４０の内面から周方向に長い直方体状に突出する。たとえば、それぞれ２つの第１係止部４８と第２係止部５０とが、第４開口部４０の周方向に等間隔をあけて１つずつ交互に形成される。第１係止部４８と第２係止部５０との間には、詳細は後述する管継手１４の係合部６８を導入する導入溝５４が形成される。   Further, a first locking portion 48 and a second locking portion 50 are formed on the end 22 side slightly from the annular locking portion 46. Between the annular locking part 46, the first locking part 48, and the second locking part 50, a locking groove 52 for receiving an engaging part 68 of the pipe joint 14 described later in detail is formed. The first locking portion 48 and the second locking portion 50 are formed by recessing the tube wall of the fourth opening 40 inward, and project from the inner surface of the fourth opening 40 in a rectangular parallelepiped shape that is long in the circumferential direction. For example, the two first locking portions 48 and the second locking portions 50 are alternately formed one by one at equal intervals in the circumferential direction of the fourth opening 40. Between the 1st latching | locking part 48 and the 2nd latching | locking part 50, the introduction groove | channel 54 which introduces the engaging part 68 of the pipe joint 14 mentioned later for details is formed.

図７−図９に示すように、第１係止部４８には、その周方向の一方端から環状係止部４６側に延出する第１ストッパ５６が形成される。第１ストッパ５６は、第１係止部４８と環状係止部４６とを連通している。また、第２係止部５０には、その周方向の一方端、具体的には第１係止部４８とは周方向反対側の一方端から環状係止部４６側に少しだけ延出する第２ストッパ５８が形成される。なお、第２ストッパ５８は、詳細は後述する、管継手１４に不測の回転力が生じた場合に、その係合部６８を掛止する機能を果たす。   As shown in FIGS. 7 to 9, the first locking portion 48 is formed with a first stopper 56 that extends from one circumferential end to the annular locking portion 46 side. The first stopper 56 communicates the first locking portion 48 and the annular locking portion 46. Further, the second locking portion 50 slightly extends from one end in the circumferential direction, specifically, from one end on the opposite side to the first locking portion 48 toward the annular locking portion 46. A second stopper 58 is formed. The second stopper 58 has a function of hooking the engaging portion 68 when an unexpected rotational force is generated in the pipe joint 14, which will be described in detail later.

また、上述したように、鞘管１２には、管継手１４が固定される（図１および図２参照）。   Moreover, as mentioned above, the pipe joint 14 is fixed to the sheath pipe 12 (refer FIG. 1 and FIG. 2).

図１０および図１１に示すように、管継手１４は、塩化ビニルなどの合成樹脂からなり、射出成形によって円筒状に形成される。たとえば、その呼び径は１１０ｍｍであり、その長さは１３６ｍｍである。また、管継手１４の両端には、それぞれ第１受口６０と第２受口６２とが形成される。第１受口６０は、第２鞘管部２０の第４開口部４０に挿入されて、鞘管１２の屋外側の端部２２に固定される部位であると共に、その内部に後述する第２内管部８８が挿入されて、内管１６を接続する部位である。また、第２受口６２には、屋外排水管１２４が挿入されて、接着接合される。   As shown in FIGS. 10 and 11, the pipe joint 14 is made of a synthetic resin such as vinyl chloride, and is formed in a cylindrical shape by injection molding. For example, the nominal diameter is 110 mm and the length is 136 mm. Moreover, the 1st receiving port 60 and the 2nd receiving port 62 are formed in the both ends of the pipe joint 14, respectively. The first receiving port 60 is a part that is inserted into the fourth opening 40 of the second sheath tube portion 20 and is fixed to the end portion 22 on the outdoor side of the sheath tube 12, and a second that will be described later. The inner pipe portion 88 is inserted to connect the inner pipe 16. In addition, the outdoor drain pipe 124 is inserted into the second receiving port 62 and adhesively bonded.

図１２に示すように、第１受口６０には、凹部６４が形成される。凹部６４は、たとえば、管継手１４の外周面に沿って形成された環状の溝であって、内側に向って窪んでいる。凹部６４は、たとえば管継手１４と鞘管１２との固定時における、環状係止部４６の位置に合わせて形成される。凹部６４には、シール材６６が設けられる。シール材６６は、ゴム輪などによって形成され、環状係止部４６の第２鞘管部１８の内面側と当接する。   As shown in FIG. 12, a recess 64 is formed in the first receiving port 60. The recess 64 is, for example, an annular groove formed along the outer peripheral surface of the pipe joint 14 and is recessed toward the inside. The concave portion 64 is formed, for example, in accordance with the position of the annular locking portion 46 when the pipe joint 14 and the sheath pipe 12 are fixed. A sealing material 66 is provided in the recess 64. The sealing material 66 is formed of a rubber ring or the like and abuts on the inner surface side of the second sheath tube portion 18 of the annular locking portion 46.

また、凹部６６より少し第２受口６２側には、係合部６８が形成される。係合部６８は、たとえば、管継手１４の外周面に沿って形成された略直方体状の突起であって、外側に向かって突き出している。図１３に示すように、たとえば、複数（この実施例では４つ）の係合部６８が、第１受口６０の周方向に等間隔をあけて形成され、前述の導入溝５４の位置に対応している。係合部６０には、その側面を面取りした案内部７０が形成される。案内部７０は、たとえば管継手１４中央側かつ前述の第２ストッパ５８が突出する回転方向側の角に形成される。   Further, an engaging portion 68 is formed on the second receiving port 62 side slightly from the concave portion 66. The engaging portion 68 is, for example, a substantially rectangular parallelepiped protrusion formed along the outer peripheral surface of the pipe joint 14 and protrudes outward. As shown in FIG. 13, for example, a plurality of (four in this embodiment) engaging portions 68 are formed at equal intervals in the circumferential direction of the first receiving port 60, and at the position of the introduction groove 54 described above. It corresponds. The engaging portion 60 is formed with a guide portion 70 whose side surfaces are chamfered. The guide portion 70 is formed, for example, at the corner on the rotational direction side where the second stopper 58 protrudes from the center of the pipe joint 14.

また、図１４に示すように、係合部６８より少し第２受口６２側には、第１受口６０の外周面から径方向の外側に突出する複数（この実施例では８つ）の補強板７２が形成され、管継手１４の剛性を保持している。   Further, as shown in FIG. 14, a plurality of (eight in this embodiment) projecting radially outward from the outer peripheral surface of the first receiving port 60 on the second receiving port 62 side slightly from the engaging portion 68. A reinforcing plate 72 is formed, and the rigidity of the pipe joint 14 is maintained.

さらに、補強板７２より少し第２受口６２側には、フランジ７４が形成される。フランジ７４は、たとえば、管継手１４の外周面に沿って形成された環状の突起であって、外側に向かって突き出している。たとえば、フランジ７４には、２つの窪み７６が形成される。図１５に示すように、窪み７６は、係合部６８が後述する第２受口６２側から目視可能となるように、係合部６８の位置に合わせて形成される。ただし、窪み７６は４つ形成してもよい。この場合には、全ての係合部６８を目視可能であるため、たとえば可視領域が小さい場合でも、管継手１４を鞘管１２から取り外すことができる。   Further, a flange 74 is formed slightly closer to the second receiving port 62 than the reinforcing plate 72. The flange 74 is, for example, an annular protrusion formed along the outer peripheral surface of the pipe joint 14 and protrudes outward. For example, two recesses 76 are formed in the flange 74. As shown in FIG. 15, the recess 76 is formed in accordance with the position of the engaging portion 68 so that the engaging portion 68 can be viewed from the second receiving port 62 side described later. However, four depressions 76 may be formed. In this case, since all the engaging portions 68 are visible, the pipe joint 14 can be detached from the sheath pipe 12 even when the visible region is small, for example.

また、第１受口６０の内面には、ゴム溝７８が形成される。ゴム溝７８は、たとえば、管継手１４の内周面に沿って形成された環状の溝であって、内側に向って窪んでいる（図１２参照）。ゴム溝７８には、ゴム輪８０が設けられる。そして、たとえば、第１受口６０の内部には後述する第２内管部８８が挿入されて、水密状態でゴム輪接合される。   A rubber groove 78 is formed on the inner surface of the first receiving port 60. The rubber groove 78 is, for example, an annular groove formed along the inner peripheral surface of the pipe joint 14 and is recessed toward the inside (see FIG. 12). A rubber ring 80 is provided in the rubber groove 78. Then, for example, a second inner pipe portion 88 to be described later is inserted into the first receiving port 60, and rubber rings are joined in a watertight state.

さらに、ゴム溝７８より少し第２受口６２側には、制止部８２が形成される（図１２参照）。制止部８２は、たとえば、管継手１４の内周面に沿って形成された環状の突起であって、内側に向かって突き出している。   Further, a restraining portion 82 is formed slightly on the second receiving port 62 side from the rubber groove 78 (see FIG. 12). The restraining portion 82 is, for example, an annular protrusion formed along the inner peripheral surface of the pipe joint 14 and protrudes inward.

また、上述したように、鞘管１２の内部には、内管１６が挿通される（図１および図２参照）。   As described above, the inner tube 16 is inserted into the sheath tube 12 (see FIGS. 1 and 2).

内管１６は、たとえば、それぞれ別体として成形した屈曲内管部８４、第１内管部８６および第２内管部８８を組み合わせることによって形成される。ただし、内管１６は、可撓管などによって一体に形成してもよい。たとえば、屈曲内管部８４および第１内管部８６は、第１鞘管部１８内に設けられ、第２内管部８８は第２鞘管部２０内に設けられる（図３参照）。   The inner tube 16 is formed, for example, by combining a bent inner tube portion 84, a first inner tube portion 86, and a second inner tube portion 88 that are formed as separate bodies. However, the inner tube 16 may be integrally formed by a flexible tube or the like. For example, the bent inner tube portion 84 and the first inner tube portion 86 are provided in the first sheath tube portion 18 and the second inner tube portion 88 is provided in the second sheath tube portion 20 (see FIG. 3).

図１６に示すように、屈曲内管部８４は、たとえば、ポリ塩化ビニルなどの合成樹脂からなり、射出成形によって形成される。屈曲内管部８４には、垂直上方向に開口する流入口９０、および水平方向に開口する流出口９２が形成される。屈曲内管部８４は、その流入口９０と流出口９２とが第１鞘管部１６内に収まるよう形成され、平面視で馬蹄形状を有している。また、屈曲内管部８４の外周面には、下方向に突き出す当接部９４が形成される。当接部９４は、たとえば、その外縁が第１鞘管部１８の底面の形状に相当する円弧状に形成される板状体である。   As shown in FIG. 16, the bent inner tube portion 84 is made of, for example, a synthetic resin such as polyvinyl chloride, and is formed by injection molding. The bent inner pipe portion 84 is formed with an inflow port 90 that opens in the vertical upward direction and an outflow port 92 that opens in the horizontal direction. The bent inner tube portion 84 is formed such that the inlet 90 and the outlet 92 are accommodated in the first sheath tube portion 16, and has a horseshoe shape in plan view. Further, a contact portion 94 protruding downward is formed on the outer peripheral surface of the bent inner tube portion 84. The contact portion 94 is a plate-like body whose outer edge is formed in an arc shape corresponding to the shape of the bottom surface of the first sheath tube portion 18, for example.

屈曲内管部８４の流入口９０には、垂直上方向に延びる第１内管部８６が接続される。第１内管部８６は、流入口９０の内径に等しい外径を有する塩化ビニル管などが用いられる。第１内管部８６は、その一端が屈曲内管部８４の流入口９０に挿入されて、屈曲内管部８４と接着接合される。また、第１内管部８６は、その他端に屋内排水管１２２が挿入されて、屋内排水管と接着接合される。   A first inner tube portion 86 extending vertically upward is connected to the inlet 90 of the bent inner tube portion 84. As the first inner pipe portion 86, a vinyl chloride pipe having an outer diameter equal to the inner diameter of the inflow port 90 is used. One end of the first inner tube portion 86 is inserted into the inlet 90 of the bent inner tube portion 84 and is bonded to the bent inner tube portion 84 by adhesive bonding. In addition, the first inner pipe portion 86 is bonded to the indoor drain pipe by inserting the indoor drain pipe 122 at the other end.

また、屈曲内管部２０の流出口９２には、水平方向に延びる第２内管部８８が接続される。第２内管部８８は、塩化ビニルなどの合成樹脂からなり、ブロー成形によって円筒状に形成される。たとえば、第２内管部８８の呼び径は１１０ｍｍであり、その長さは３００ｍｍである。第２内管部８８は、その一端が屈曲内管部８４の流出口９２に挿入されて、屈曲内管部８４とゴム輪接合される。また、第２内管部８８は、その他端が管継手１４の第２受口６２に挿入されて、管継手１４と水密状態でゴム輪接合される。   A second inner pipe portion 88 extending in the horizontal direction is connected to the outlet 92 of the bent inner pipe portion 20. The second inner pipe portion 88 is made of a synthetic resin such as vinyl chloride and is formed in a cylindrical shape by blow molding. For example, the nominal diameter of the second inner tube portion 88 is 110 mm, and its length is 300 mm. One end of the second inner tube portion 88 is inserted into the outlet 92 of the bent inner tube portion 84 and is joined to the bent inner tube portion 84 with a rubber ring. The other end of the second inner pipe portion 88 is inserted into the second receiving port 62 of the pipe joint 14 and is joined to the pipe joint 14 with a rubber ring in a watertight state.

図１７および図１８を参照して、上述のような鞘管１２、管継手１４、および内管１６によって、二重管継手１０の接続構造を形成する方法を以下に示す。   With reference to FIG. 17 and FIG. 18, the method of forming the connection structure of the double pipe joint 10 by the sheath pipe 12, the pipe joint 14, and the inner pipe 16 as mentioned above is shown below.

先ず、鞘管１２に形成される係止部４４によって管継手１４を固定する。具体的には、図１７に示すように、第１受口６０の外面に形成される係合部６８の位置と、第４開口部４０に形成される導入溝５４の位置とを合わせて、管継手１４を矢印Ａ方向すなわち鞘管１２内の方向に押し込む。そして、図１８に示すように、その状態からさらに、係合部６８が第１ストッパ５６に当接するまで管継手１４を矢印Ｂ方向に回転させて係止溝５２に収容し、係合部６８と第１係止部４８および第２係止部５０とを係合する。   First, the pipe joint 14 is fixed by the locking portion 44 formed on the sheath pipe 12. Specifically, as shown in FIG. 17, the position of the engaging portion 68 formed on the outer surface of the first receiving port 60 and the position of the introduction groove 54 formed in the fourth opening 40 are combined, The pipe joint 14 is pushed in the direction of arrow A, that is, the direction in the sheath pipe 12. Then, as shown in FIG. 18, from this state, the pipe joint 14 is further rotated in the direction of arrow B until the engaging portion 68 comes into contact with the first stopper 56, and is received in the locking groove 52. And the first locking portion 48 and the second locking portion 50 are engaged.

また、管継手１４と内管１６とを接続する。具体的には、管継手１４を矢印Ａ方向に押し込む際に、第１受口６０の内部に第２内管部８８を挿入させながら、係合部６８が環状係止部４６に当接するまで押し込む。   Further, the pipe joint 14 and the inner pipe 16 are connected. Specifically, when the pipe joint 14 is pushed in the direction of arrow A, the second inner pipe portion 88 is inserted into the first receiving port 60 until the engaging portion 68 comes into contact with the annular locking portion 46. Push in.

なお、鞘管１２と管継手１４とを取り外す場合には、一旦、管継手１４を矢印Ａ方向（図１７参照）すなわち鞘管１２内の方向に押し込む。次に、その状態からさらに、管継手１４を矢印Ｂ方向（図１８参照）とは反対方向に回転させて、管継手１４と鞘管１２との係合状態（ロック状態）を解除する。具体的には、第２受口６２側からフランジ７４に形成される窪み７６を目視した際に、係合部６８が確認可能になる位置に、係合部６８を移動させる。そして、係合部６８を導入溝５４から引き出して、管継手１４を鞘管１２から取り外す。   In addition, when removing the sheath pipe 12 and the pipe joint 14, the pipe joint 14 is once pushed in the arrow A direction (refer FIG. 17), ie, the direction in the sheath pipe 12. As shown in FIG. Next, from this state, the pipe joint 14 is further rotated in the direction opposite to the arrow B direction (see FIG. 18), and the engagement state (locked state) between the pipe joint 14 and the sheath pipe 12 is released. Specifically, the engagement portion 68 is moved to a position where the engagement portion 68 can be confirmed when the recess 76 formed in the flange 74 is viewed from the second receiving port 62 side. Then, the engaging portion 68 is pulled out from the introduction groove 54, and the pipe joint 14 is removed from the sheath pipe 12.

また、上述したような二重管継手１０によって、建築物の基礎１２０を貫通する、基礎貫通配管構造を形成する方法を以下に示す。   Moreover, the method of forming the foundation penetration piping structure which penetrates the foundation 120 of a building with the double pipe joint 10 as mentioned above is shown below.

先ず、建築物の基礎１２０を作るための基礎型枠（図示せず）を形成して、基礎型枠内に配筋１２６を配置する。また、配筋１２６には、別途鞘管１２を固定するための固定筋１２８を配置する。   First, a base formwork (not shown) for making the foundation 120 of the building is formed, and the reinforcing bar 126 is arranged in the base formwork. In addition, the reinforcing bar 126 is provided with a fixing bar 128 for fixing the sheath tube 12 separately.

そして、鞘管１２内に、内管１６を挿通する。ただし、内管１６は、後述するコンクリート打設後に鞘管１２に挿通してもよい。   Then, the inner tube 16 is inserted into the sheath tube 12. However, the inner pipe 16 may be inserted into the sheath pipe 12 after concrete placement described later.

次に、鞘管１２の一端が屋内に開口して、他端が屋外に開口するように、基礎型枠内に鞘管１２を配置する。この際は、市販の支持具１３０を用いる、或いは配筋支持部３２に固定筋１２８を嵌め込むなど、適宜の方法によって鞘管１２を配筋１２６に固定する。   Next, the sheath tube 12 is disposed in the basic mold so that one end of the sheath tube 12 opens indoors and the other end opens outdoors. At this time, the sheath tube 12 is fixed to the reinforcing bar 126 by an appropriate method such as using a commercially available support tool 130 or fitting the fixing bar 128 to the reinforcing bar support portion 32.

そして、基礎型枠内にコンクリートを打設して基礎１２０を形成する。コンクリートが乾いたら、基礎１２０より上部に露出した鞘管１２、内管１６或いはその両方を適宜切断する。   And concrete is cast in a foundation formwork, and foundation 120 is formed. When the concrete dries, the sheath tube 12 and / or the inner tube 16 exposed above the foundation 120 are appropriately cut.

次に、上述のような接続構造を有する二重管継手１０を用いて、内管１４と屋内排水管１０６とを接続する。この実施例では、垂直内管２２の上端に屋内排水管１０６を挿入して、接着接合する。   Next, the inner pipe 14 and the indoor drain pipe 106 are connected using the double pipe joint 10 having the connection structure as described above. In this embodiment, the indoor drain pipe 106 is inserted into the upper end of the vertical inner pipe 22 and bonded.

最後に、管継手１４と屋外排水管１２４とを接着接合する。この実施例では、第２受口６２の内面、および屋外排水管１２４の外面に接着剤を塗布する。そして、屋外排水管１２４を、制止部８２に当接するまで、第２受口６２の内部に挿入する。   Finally, the pipe joint 14 and the outdoor drain pipe 124 are adhesively bonded. In this embodiment, an adhesive is applied to the inner surface of the second receiving port 62 and the outer surface of the outdoor drain pipe 124. Then, the outdoor drain pipe 124 is inserted into the second receiving port 62 until it comes into contact with the stop portion 82.

このように、二重管継手１０では、管継手１４が鞘管１２の係止部４４に固定されることによって、管継手１４の第１受口６０に接続する第２内管部８８も、鞘管の屋外側の端部２２に固定される。これにより、鞘管１２内での内管１６の位置が固定されるため、管継手１４の第２受口６２に屋外排水管１２４を接続する際に、内管１６が鞘管１２内の方向に移動しない。したがって、屋内排水管１２２側で内管１６を固定しなくても、内管１６と屋外排水管１２４との接続を適切に行うことができる。   Thus, in the double pipe joint 10, the second inner pipe part 88 connected to the first receiving port 60 of the pipe joint 14 is also obtained by fixing the pipe joint 14 to the locking part 44 of the sheath pipe 12. It is fixed to the end portion 22 on the outdoor side of the sheath tube. Thereby, since the position of the inner pipe 16 in the sheath pipe 12 is fixed, when the outdoor drain pipe 124 is connected to the second receiving port 62 of the pipe joint 14, the inner pipe 16 is oriented in the sheath pipe 12. Do not move to. Therefore, the inner pipe 16 and the outdoor drain pipe 124 can be appropriately connected without fixing the inner pipe 16 on the indoor drain pipe 122 side.

また、二重管継手１０では、鞘管１２の内部で管継手１４と内管１６とがゴム輪接合されると共に、鞘管１２の外部で管継手１４と屋外排水管１２４とが接続される。すなわち、接着接合による内管１６と屋外配水管１２４との接続は、鞘管１２の外部で行われる。よって、たとえば接続に用いた接着剤がはみ出て鞘管１２の内部に固着するなどの危険性がない。したがって、支障なく鞘管１２から内管１６を取り出すことができる。   Further, in the double pipe joint 10, the pipe joint 14 and the inner pipe 16 are rubber ring joined inside the sheath pipe 12, and the pipe joint 14 and the outdoor drain pipe 124 are connected outside the sheath pipe 12. . That is, the connection between the inner pipe 16 and the outdoor water distribution pipe 124 by adhesive bonding is performed outside the sheath pipe 12. Therefore, for example, there is no risk that the adhesive used for connection protrudes and adheres to the inside of the sheath tube 12. Therefore, the inner tube 16 can be taken out from the sheath tube 12 without hindrance.

さらに、二重管継手１０は、鞘管１２と管継手１４との係合手段を備え、鞘管１２と管継手１４とが着脱自在に固定される。これにより、鞘管１２から管継手１４を取り外して、屋外側から内管１６の交換を行うことができる。したがって、内管１６の補修を容易に行うことができる。   Furthermore, the double pipe joint 10 includes engagement means for the sheath pipe 12 and the pipe joint 14, and the sheath pipe 12 and the pipe joint 14 are detachably fixed. Thereby, the pipe joint 14 can be removed from the sheath pipe | tube 12, and the inner pipe | tube 16 can be replaced | exchanged from the outdoor side. Therefore, the inner pipe 16 can be repaired easily.

また、係合部６８の面取りを行い、案内部７０を形成した。これにより、管継手１４をＡ方向に押し込んだ後、管継手１４を矢印Ｂ方向に回転させる際に、係合部６８を第２ストッパ５８に接触させずに、導入溝５４から係止溝５２内に円滑に移動させることができる。したがって、鞘管１２と管継手１４とを容易に固定することができる。   Further, the engaging portion 68 was chamfered to form the guide portion 70. Thus, after the pipe joint 14 is pushed in the A direction, when the pipe joint 14 is rotated in the arrow B direction, the engaging portion 68 is not brought into contact with the second stopper 58, and the engaging groove 52 is engaged with the engaging groove 52. It can be moved smoothly in. Therefore, the sheath tube 12 and the pipe joint 14 can be easily fixed.

さらにまた、管継手１４の外面に形成される凹部６４にシール材６６を設けた。シール材６６は、管継手１４と鞘管１２との固定時において、第２鞘管部２０の内面と当接して、管継手１４と鞘管１２との隙間を水密状態でシールすることができる。したがって、鞘管１２と管継手１４との隙間からの、建築物内への水や虫などの浸入が防止される。   Furthermore, a sealing material 66 is provided in a recess 64 formed on the outer surface of the pipe joint 14. When the pipe joint 14 and the sheath pipe 12 are fixed, the seal material 66 is in contact with the inner surface of the second sheath pipe portion 20 and can seal the gap between the pipe joint 14 and the sheath pipe 12 in a watertight state. . Therefore, intrusion of water, insects, and the like into the building from the gap between the sheath pipe 12 and the pipe joint 14 is prevented.

なお、この実施例では、管継手１４は、第２内管部８８に接続されたが、これに限定される必要はなく、管継手１４と屈曲内管部８４とを直接接続してもよい。この場合には、たとえば、図１９に示すように、管継手１４の第１受口６０に、直管部１００を形成するとよい。直管部１００は、管継手１４の管軸方向に延びる円筒状に形成され、たとえば、その呼び径は１００ｍｍであり、その長さは３００ｍｍである。図２０に示すように、直管部１００は、屈曲内管部８４の終端として水平方向に開口する流出口９２に挿入されて、ゴム輪接合される。   In this embodiment, the pipe joint 14 is connected to the second inner pipe portion 88, but is not limited to this, and the pipe joint 14 and the bent inner pipe portion 84 may be directly connected. . In this case, for example, as shown in FIG. 19, the straight pipe portion 100 may be formed in the first receiving port 60 of the pipe joint 14. The straight pipe portion 100 is formed in a cylindrical shape extending in the pipe axis direction of the pipe joint 14. For example, the nominal diameter is 100 mm and the length is 300 mm. As shown in FIG. 20, the straight pipe portion 100 is inserted into an outlet 92 that opens in the horizontal direction as an end of the bent inner pipe portion 84 and is joined to a rubber ring.

また、図２１に示すように、第２鞘管部２０に形成されるリブ３６の鞘管１２内面側に、シール材１０２をさらに設けることもできる。シール材１０２は、ゴム輪などによって形成され、第２内管部８８の外面と当接する。これにより、鞘管１２と内管１６との隙間は、水密状態でシールされる。   Further, as shown in FIG. 21, a sealing material 102 can be further provided on the inner surface side of the sheath tube 12 of the rib 36 formed in the second sheath tube portion 20. The sealing material 102 is formed of a rubber ring or the like and abuts on the outer surface of the second inner tube portion 88. Thereby, the gap between the sheath tube 12 and the inner tube 16 is sealed in a watertight state.

図２２に示すこの発明のさらに他の実施例である二重管継手１０は、管継手１４の外面にシール材６６が設けられる代わりに、第２内管部８８の外面にシール材１０４が設けられる。   In the double pipe joint 10 which is still another embodiment of the present invention shown in FIG. 22, the seal material 104 is provided on the outer surface of the second inner pipe portion 88 instead of the seal material 66 provided on the outer surface of the pipe joint 14. It is done.

図２２に示すように、シール材１０４は、ゴム輪などによって形成され、第２内管部８８の外面に設けられる。シール材１０４は、管継手１４と鞘管１２との固定時に、管継手１４の第１受口６０側の先端および第２鞘管部２０の内面に当接する位置に設けられる。シール材１０４は、管継手１４と鞘管１２との固定時に、管継手１４の第１受口６０の先端、第４開口部４０の内面および第２内管部８８の外面に当接する。よって、シール材１０４は、鞘管１２と管継手１４、および鞘管１２と内管１６との隙間を水密状態でシールすることができる。したがって、鞘管１２と管継手１４、および鞘管１２と内管１４との隙間からの、建築物内への水や虫などの浸入が防止される。したがって、鞘管１２と内管１６との隙間からの、建築物内への水や虫などの浸入が防止される。   As shown in FIG. 22, the sealing material 104 is formed by a rubber ring or the like and is provided on the outer surface of the second inner pipe portion 88. The sealing material 104 is provided at a position where it abuts the tip of the pipe joint 14 on the first receiving port 60 side and the inner surface of the second sheath pipe portion 20 when the pipe joint 14 and the sheath pipe 12 are fixed. When the pipe joint 14 and the sheath pipe 12 are fixed, the seal material 104 contacts the tip of the first receiving port 60 of the pipe joint 14, the inner surface of the fourth opening 40, and the outer surface of the second inner pipe portion 88. Therefore, the sealing material 104 can seal the gap between the sheath tube 12 and the pipe joint 14 and between the sheath tube 12 and the inner tube 16 in a watertight state. Therefore, infiltration of water, insects, and the like into the building from the gaps between the sheath tube 12 and the pipe joint 14 and between the sheath tube 12 and the inner tube 14 is prevented. Therefore, intrusion of water, insects, and the like into the building from the gap between the sheath tube 12 and the inner tube 16 is prevented.

図２３に示すこの発明の他の実施例である二重管継手１０では、垂直方向に立ち上がる鞘管１２の屋外側の端部２２に係止部４４が形成されるのではなく、湾曲して斜め方向に立ち上がる鞘管１２の屋外側の端部２２に係止部４４が形成される。以下、図１に示す二重管継手１０と同様である部分に関しては、詳細な説明は省略する。   In the double pipe joint 10 which is another embodiment of the present invention shown in FIG. 23, the engaging portion 44 is not formed at the end portion 22 on the outdoor side of the sheath tube 12 rising in the vertical direction, but is curved. A locking portion 44 is formed at the end portion 22 on the outdoor side of the sheath tube 12 that rises in an oblique direction. Hereinafter, detailed description of the same parts as those of the double pipe joint 10 shown in FIG. 1 will be omitted.

図２３に示すように、鞘管１２は、ポリエチレンなどの合成樹脂からなり、たとえば、湾曲して斜め方向に立ち上がる曲管によって形成される。鞘管１２は、一端が屋内側に開口して、他端が屋外側に開口する。鞘管１２の屋外側の端部２２には、係止部４４が形成され、上述したような接続構造によって管継手１４が固定される。また、鞘管１２内に挿通される内管１６は、ポリ塩化ビニルなどの合成樹脂からなり、たとえば、曲がり可能な可撓管によって形成される。内管１６の鞘管１２に挿通される部分は、たとえば、その外面が蛇腹状に形成され、その内面が平滑に形成される。内管１６は、その一端が管継手１４の第１受口６０に接続され、その他端が屋内排水管１２２に接続される。   As shown in FIG. 23, the sheath tube 12 is made of a synthetic resin such as polyethylene, and is formed by, for example, a curved tube that curves and rises in an oblique direction. One end of the sheath tube 12 opens to the indoor side, and the other end opens to the outdoor side. A locking portion 44 is formed at the end portion 22 on the outdoor side of the sheath tube 12, and the pipe joint 14 is fixed by the connection structure as described above. Moreover, the inner tube | pipe 16 penetrated in the sheath tube 12 consists of synthetic resins, such as polyvinyl chloride, for example, is formed by the flexible tube which can be bent. For example, the outer surface of the portion of the inner tube 16 that is inserted into the sheath tube 12 is formed in a bellows shape, and the inner surface thereof is formed smoothly. One end of the inner pipe 16 is connected to the first receiving port 60 of the pipe joint 14, and the other end is connected to the indoor drain pipe 122.

このように、湾曲して斜め方向に立ち上がる鞘管１２によって二重管継手１０を形成しても、垂直方向に立ち上がる鞘管１２によって二重管継手１０を形成した場合と同様の効果を得ることができる。   Thus, even if the double pipe joint 10 is formed by the sheath pipe 12 that is curved and rises in an oblique direction, the same effect as when the double pipe joint 10 is formed by the sheath pipe 12 that rises in the vertical direction can be obtained. Can do.

さらに、内管１６は、鞘管１２の屋外側の端部２２に固定されるため、たとえば屋外排水管１２４と管継手１４とを接続する際に、内管が鞘管１２内の方向に圧縮されて鞘管１２内で撓むことがない。したがって、内管１６を可撓管によって形成しても、排水性能を低減させることなく、屋外排水管１２４と接続することができる。   Furthermore, since the inner pipe 16 is fixed to the end portion 22 on the outdoor side of the sheath pipe 12, for example, when the outdoor drain pipe 124 and the pipe joint 14 are connected, the inner pipe is compressed in the direction within the sheath pipe 12. And does not bend in the sheath tube 12. Therefore, even if the inner pipe 16 is formed of a flexible pipe, it can be connected to the outdoor drain pipe 124 without reducing the drainage performance.

なお、図２４に示すように、屈曲して斜め上方向に立ち上がる鞘管１２の屋外側の端部２２に係止部４４を形成してもよい。   In addition, as shown in FIG. 24, you may form the latching | locking part 44 in the edge part 22 of the outdoor side of the sheath pipe 12 which bends and stands up diagonally upward.

また、図示は省略するが、垂直方向或いは水平方向に延びる直管によって形成される鞘管１２の屋外側或いは屋内側の端部２２に各係止部４４を形成してもよい。   Moreover, although illustration is abbreviate | omitted, you may form each latching | locking part 44 in the edge part 22 of the outdoor side or indoor side of the sheath pipe 12 formed with the straight pipe extended in a perpendicular direction or a horizontal direction.

さらに、鞘管１２と係止部４４とを別体に形成することもできる。たとえば、図示は省略するが、射出成形などによって短円筒状の係止部４４を形成し、湾曲或いは屈曲して斜め方向に立ち上がる曲管や、垂直方向或いは水平方向に延びる直管の端部に接着接合してもよい。   Furthermore, the sheath tube 12 and the locking portion 44 can be formed separately. For example, although not shown in the drawings, a short cylindrical locking portion 44 is formed by injection molding or the like, and is bent or bent to rise in an oblique direction, or to the end of a straight pipe extending in the vertical or horizontal direction. Adhesive bonding may be used.

図２５に示すこの発明のさらに他の実施例である二重管継手１０は、管継手１４に第２受口６２が形成される代わりに、挿口１０６が形成される。   In the double pipe joint 10 which is still another embodiment of the present invention shown in FIG. 25, an insertion opening 106 is formed instead of the second receiving opening 62 formed in the pipe joint 14.

図２５に示すように、管継手１４の一端には、第１受口６０が形成され、他端には、挿口１０６が形成される。挿口１０６は、第１受口６０側から少し縮径して、その内面が制止部８２の先端と連なるように形成される。すなわち、挿口１０６の内面は、第１受口６０に挿入される内管１６の内面と面一となるよう形成される。たとえば、挿口１０６は、屋外排水管１２４に挿入されて、接着接合される。   As shown in FIG. 25, a first receiving port 60 is formed at one end of the pipe joint 14 and an insertion port 106 is formed at the other end. The insertion opening 106 is formed so that its diameter is slightly reduced from the first receiving opening 60 side, and its inner surface is connected to the tip of the restraining portion 82. That is, the inner surface of the insertion opening 106 is formed to be flush with the inner surface of the inner tube 16 inserted into the first receiving port 60. For example, the insertion opening 106 is inserted into the outdoor drain pipe 124 and bonded.

また、上述の各実施例ではいずれも、鞘管１２と管継手１４との係合手段として、管継手１４に係合部６８を形成して、第２鞘管部２０に係止部４４を形成したが、これに限定される必要はない。たとえば、図示は省略するが、係合手段として、管継手１４の外面に雄ネジを形成し、第２鞘管部２０の内面に雌ネジを形成して、螺合することもできる。また、バヨネット方式（或いはターンアップ方式）を係合手段として採用してもよい。   In each of the above-described embodiments, as an engaging means between the sheath tube 12 and the pipe joint 14, an engaging portion 68 is formed in the pipe joint 14, and the locking portion 44 is provided in the second sheath pipe portion 20. Although formed, it is not necessary to be limited to this. For example, although illustration is omitted, as an engaging means, a male screw can be formed on the outer surface of the pipe joint 14 and a female screw can be formed on the inner surface of the second sheath tube portion 20 to be screwed together. Moreover, you may employ | adopt a bayonet system (or turn-up system) as an engaging means.

なお、上で上げた寸法の具体的な数字はいずれも単なる一例であり、必要に応じて適宜変更可能である。   In addition, all the specific numbers of the dimensions raised above are merely examples, and can be appropriately changed as necessary.

この発明の一実施例の二重管継手によって屋内排水管と屋外排水管とを接続した様子を示す断面図である。It is sectional drawing which shows a mode that the indoor drain pipe and the outdoor drain pipe were connected by the double pipe coupling of one Example of this invention. 図１の二重管継手の接続構造を示す断面図である。It is sectional drawing which shows the connection structure of the double pipe coupling of FIG. 図１の二重管継手を示す図解図である。It is an illustration figure which shows the double pipe coupling of FIG. 図１の二重管継手の第１鞘管部を示す斜視図である。It is a perspective view which shows the 1st sheath pipe part of the double pipe coupling of FIG. 図１の二重管継手の第２鞘管部を示す斜視図である。It is a perspective view which shows the 2nd sheath pipe part of the double pipe coupling of FIG. 図５の第２鞘管部を示す平面図である。It is a top view which shows the 2nd sheath pipe part of FIG. 図６のVII―VII線における第２鞘管部の断面を示す断面図である。It is sectional drawing which shows the cross section of the 2nd sheath pipe part in the VII-VII line of FIG. 図６のVIII―VIII線における第２鞘管部の断面を示す断面図である。It is sectional drawing which shows the cross section of the 2nd sheath pipe part in the VIII-VIII line of FIG. 図６のIX―IX線における第２鞘管部の断面を示す断面図である。It is sectional drawing which shows the cross section of the 2nd sheath pipe part in the IX-IX line of FIG. 図１の二重管継手の管継手を示す斜視図である。It is a perspective view which shows the pipe joint of the double pipe joint of FIG. 図１０の管継手を示す平面図である。It is a top view which shows the pipe joint of FIG. 図１０の管継手を示す断面図である。It is sectional drawing which shows the pipe joint of FIG. 図１１のXIII―XIII線における管継手の断面を示す斜視図である。It is a perspective view which shows the cross section of the pipe joint in the XIII-XIII line | wire of FIG. 図１１のXIV―XIV線における管継手の断面を示す斜視図である。It is a perspective view which shows the cross section of the pipe joint in the XIV-XIV line | wire of FIG. 図１１のXV―XV線における管継手の断面を示す斜視図である。It is a perspective view which shows the cross section of the pipe joint in the XV-XV line | wire of FIG. 図１の二重管継手の屈曲内管部を示す斜視図である。It is a perspective view which shows the bending inner pipe part of the double pipe coupling of FIG. 管継手と鞘管とを係合する様子を示す図解図である。It is an illustration figure which shows a mode that a pipe joint and a sheath pipe are engaged. 管継手と鞘管とを係合する様子を示す図解図である。It is an illustration figure which shows a mode that a pipe joint and a sheath pipe are engaged. この発明の他の一実施例の二重管継手の管継手を示す斜視図であるIt is a perspective view which shows the pipe joint of the double pipe joint of other one Example of this invention. 図１９の二重管継手によって屋内排水管と屋外排水管とを接続した様子を示す断面図である。It is sectional drawing which shows a mode that the indoor drain pipe and the outdoor drain pipe were connected by the double pipe coupling of FIG. この発明の他の一実施例の二重管継手のシール材を示す図解図である。It is an illustration figure which shows the sealing material of the double pipe coupling of other one Example of this invention. この発明の他の一実施例の二重管継手のシール材を示す図解図である。It is an illustration figure which shows the sealing material of the double pipe coupling of other one Example of this invention. この発明の他の一実施例の二重管継手によって屋内排水管と屋外排水管とを接続した様子を示す断面図である。It is sectional drawing which shows a mode that the indoor drain pipe and the outdoor drain pipe were connected by the double pipe coupling of other one Example of this invention. この発明の他の一実施例の二重管継手によって屋内排水管と屋外排水管とを接続した様子を示す断面図である。It is sectional drawing which shows a mode that the indoor drain pipe and the outdoor drain pipe were connected by the double pipe coupling of other one Example of this invention. この発明の他の一実施例の二重管継手の管継手を示す図解図である。It is an illustration figure which shows the pipe joint of the double pipe joint of other one Example of this invention.

符号の説明Explanation of symbols

１０…二重管継手
１２…鞘管
１４…管継手
１６…内管
１８…第１鞘管部
２０…第２鞘管部
８４…屈曲内管部
８６…第１内管部
９０…第２内管部
１２０…基礎
１２２…屋内排水管
１２４…屋外排水管
１２６…配筋 DESCRIPTION OF SYMBOLS 10 ... Double pipe joint 12 ... Sheath pipe 14 ... Pipe joint 16 ... Inner pipe 18 ... 1st sheath pipe part 20 ... 2nd sheath pipe part 84 ... Bending inner pipe part 86 ... 1st inner pipe part 90 ... 2nd inside Pipe part 120 ... Foundation 122 ... Indoor drain pipe 124 ... Outdoor drain pipe 126 ... Reinforcement

Claims (5)

建築物の基礎を貫通し、屋内排水管と屋外排水管とを接続する二重管継手であって、
鞘管、
前記鞘管内に挿通される内管、および
前記鞘管の端部に係合手段により固定され、前記内管に接続される管継手を備え、
前記管継手を前記係合手段により前記鞘管の端部に固定することによって、それと同時に前記管継手と前記内管とがゴム輪を介して接続され、
前記係合手段は、互いに対応する突起と溝とを含み、前記鞘管と前記管継手とを着脱自在に係合し、係合時には、前記突起を前記溝に収容することによって前記管継手を管軸方向の両方向への動きを防止した状態で前記鞘管に固定する、二重管継手。 A double pipe joint that penetrates the foundation of a building and connects an indoor drain pipe and an outdoor drain pipe,
Sheath tube,
An inner pipe inserted into the sheath pipe, and a pipe joint fixed to an end of the sheath pipe by an engagement means and connected to the inner pipe,
By fixing the pipe joint to the end of the sheath pipe by the engaging means, the pipe joint and the inner pipe are simultaneously connected via a rubber ring,
The engaging means includes a protrusion and a groove corresponding to each other, and detachably engages the sheath tube and the pipe joint, and when engaged, the protrusion is accommodated in the groove, thereby fitting the pipe joint. A double pipe joint that is fixed to the sheath pipe in a state in which movement in both directions in the pipe axis direction is prevented. 前記鞘管と前記管継手とに当接するシール材をさらに備え、
前記管継手を前記係合手段により前記鞘管の端部に固定することによって、それと同時に前記管継手と前記内管とがゴム輪を介して接続され、かつ前記管継手と前記鞘管との隙間が前記シール材によって水密状態でシールされるようにした、請求項１記載の二重管継手。 A seal member that contacts the sheath pipe and the pipe joint;
By fixing the pipe joint to the end of the sheath pipe by the engaging means, at the same time, the pipe joint and the inner pipe are connected via a rubber ring, and the pipe joint and the sheath pipe are connected to each other. gap was to be sealed in a watertight state by the sealing member, according to claim 1, wherein the double-fitting. 前記管継手は、前記鞘管内に挿通される直管部を有し、前記直管部の先端が前記内管に接続される、請求項１または２記載の二重管継手。 The double pipe joint according to claim 1 or 2 , wherein the pipe joint has a straight pipe part inserted into the sheath pipe, and a tip of the straight pipe part is connected to the inner pipe. 請求項１ないし３のいずれかに記載の二重管継手を用いて建築物の基礎を貫通し、屋内排水管と屋外排水管とを接続する、基礎貫通配管構造。 It claims 1 through a foundation of a building using a double pipe joint according to any one of 3, and connects the indoor drain pipe and outdoor drain pipe, basic through piping structure. 前記管継手は前記鞘管の屋外側の端部に固定され、
前記鞘管をその屋外側の管端が前記基礎の屋外側の側面と面一になるように配置した、請求項４記載の基礎貫通配管構造。 The pipe joint is fixed to an end portion on the outdoor side of the sheath pipe,
The foundation through-pipe structure according to claim 4 , wherein the sheath pipe is disposed so that a pipe end on the outdoor side is flush with a side face on the outdoor side of the foundation.
JP2007301176A 2007-11-21 2007-11-21 Double pipe joint and basic through-piping structure using the same Active JP5191216B2 (en)

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JP5645388B2 (en) * 2009-10-28 2014-12-24 積水化学工業株式会社 Basic through piping structure
JP2011137504A (en) * 2009-12-28 2011-07-14 Takiron Co Ltd Connecting structure of socket and spigot and ring used therefor
JP5760216B2 (en) * 2010-04-20 2015-08-05 アロン化成株式会社 Foundation buried drain pipe and method for adjusting the length of the foundation buried drain pipe
JP2011226153A (en) * 2010-04-20 2011-11-10 Aron Kasei Co Ltd Drainage structure in snow drop prevention roof
JP2013002211A (en) * 2011-06-20 2013-01-07 Aron Kasei Co Ltd Drain piping structure of building
JP6177650B2 (en) * 2013-10-07 2017-08-09 株式会社トップ Connecting device
JP5922737B2 (en) * 2014-10-24 2016-05-24 積水化学工業株式会社 Basic through piping structure
JP6788289B2 (en) * 2019-03-20 2020-11-25 早川ゴム株式会社 Foundation through-tube structure
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