JP2020060261A

JP2020060261A - Pipe joint

Info

Publication number: JP2020060261A
Application number: JP2018192253A
Authority: JP
Inventors: 昌史岸上; Masashi Kishigami
Original assignee: Tatsuki Co Ltd
Current assignee: Tatsuki Co Ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2020-04-16

Abstract

To provide a pair of pipe joints capable of easily connecting a pair of corrugated pipe materials with a simple structure.SOLUTION: A pipe joint 1 connects end portions of a pair of corrugated pipe materials 3A and 3B formed with regular projections/depressions at least on an outer peripheral surface. The pipe joint 1 is equipped with a socket 10 and a rotary lock body 30. The socket 10 has a locking piece 19 to be locked to outer peripheral projections/depressions of the corrugated pipe materials 3A and 3B when installed to the outer peripheries of the corrugated pipe materials 3A and 3B. The socket 10 is respectively equipped with a plurality of partial cylinder portions 11 and 12 configuring a part of the cylinder. The plurality of partial cylinder portions 11 and 12 are fitted with each other to be a cylindrical shape, thereby installing the socket 10 over the outer periphery of one end portion of the one corrugated pipe material 3A and the outer periphery of one end portion of the other corrugated pipe material 3B. With the outer periphery of the socket 10 installed to the pair of corrugated pipe materials 3A and 3B, the rotary lock body 30 is screwed to connect the end portions of the pair of corrugated pipe materials 3A and 3B.SELECTED DRAWING: Figure 2

Description

本開示は、複数の波付管材同士を接続する管継手に関する。 The present disclosure relates to a pipe joint that connects a plurality of corrugated pipe members to each other.

複数の波付管材の端部同士を接続する管継手が知られている。波付管材の内部には、各種ケーブル（例えば、通信ケーブル、給電ケーブル等）が挿通される。波付管材（例えば、波付硬質合成樹脂管（ＦＥＰ）等）では、規則的な波型の凹凸が、内周面および外周面に形成されている。波付管材の種類には、螺旋型および独立リング型がある。螺旋型の波付管材では、内周面および外周面の凹凸が螺旋形状に形成されている。独立リング型の波付管材では、それぞれが独立した複数のリング状の凸部が、内周面および外周面に規則的に形成されている。 A pipe joint that connects the ends of a plurality of corrugated pipe members is known. Various cables (for example, a communication cable, a power supply cable, etc.) are inserted into the corrugated pipe material. In the corrugated pipe material (for example, corrugated hard synthetic resin pipe (FEP)), regular corrugated irregularities are formed on the inner peripheral surface and the outer peripheral surface. Types of corrugated tubing include spiral type and independent ring type. In the spiral corrugated pipe material, irregularities on the inner peripheral surface and the outer peripheral surface are formed in a spiral shape. In the independent ring type corrugated pipe material, a plurality of independent ring-shaped protrusions are regularly formed on the inner peripheral surface and the outer peripheral surface.

例えば、特許文献１に記載の管継手では、略円筒状である管継手本体部材の内周面に、螺旋状凹凸条が形成されている。作業者は、管継手本体部材の両側から、一対の螺旋型の波付管材の各々を回転させながらねじ込むことで、一対の波付管材を接続する。また、円筒状の本体部材の両側から、一対の波付管材の各々が嵌め込まれた状態で、ボルトによって本体部材が締め付けられることで、一対の波付管材が接続される場合もある。 For example, in the pipe joint described in Patent Document 1, a spiral concavo-convex strip is formed on the inner peripheral surface of a pipe joint main body member having a substantially cylindrical shape. The worker connects the pair of corrugated pipe members by screwing the pair of spiral corrugated pipe members from both sides of the pipe joint body member while rotating them. In addition, a pair of corrugated pipe members may be connected by tightening the main body member with bolts in a state where the pair of corrugated pipe members are fitted from both sides of the cylindrical main body member.

特開２０１５−９０１８１号公報JP, 2005-90181, A

特許文献１に記載の管継手では、細長い波付管材の全体を回転させる作業が必要である。また、ボルトを締めつけて一対の波付管材を接続するタイプの管継手では、ボルトを締めつける細かい作業が煩雑となるうえに、管継手の構造自体も複雑となり易い。従って、従来の管継手では、一対の波付管材を簡易な構造で容易に接続することは困難であった。 In the pipe joint described in Patent Document 1, it is necessary to rotate the entire elongated corrugated pipe material. Further, in a pipe joint of a type in which a pair of corrugated pipe materials are fastened by tightening bolts, the detailed work of tightening the bolts is complicated, and the structure of the pipe joint itself tends to be complicated. Therefore, in the conventional pipe joint, it was difficult to easily connect the pair of corrugated pipe members with a simple structure.

本開示の典型的な目的は、一対の波付管材を簡易な構造で容易に接続することが可能な管継手を提供することである。 A typical object of the present disclosure is to provide a pipe joint capable of easily connecting a pair of corrugated pipe members with a simple structure.

本開示における典型的な実施形態が提供する管継手は、少なくとも外周面に規則的な凹凸が形成された一対の波付管材の端部同士を接続する管継手であって、前記波付管材の外径よりも内径が大きい円筒状となると共に、前記波付管材の外周に装着された際に前記波付管材の外周面の凹凸である外周凹凸に係止される係止片を有するソケットと、前記ソケットの外径よりも内径が大きい円筒状に形成され、前記ソケットの外周に螺合される回転ロック体と、を備え、前記ソケットは、それぞれが円筒の一部を構成する複数の部分円筒部を備え、前記複数の部分円筒部が互いに嵌め合わされて円筒状となることで、一方の前記波付管材の一端部の外周と、他方の前記波付管材の一端部の外周に亘って前記ソケットが装着され、一対の前記波付管材に装着された前記ソケットの外周に、前記回転ロック体が螺合されることで、前記一対の波付管材の端部同士が接続される。 A pipe joint provided by a typical embodiment of the present disclosure is a pipe joint that connects end portions of a pair of corrugated pipe members having regular unevenness formed on at least an outer peripheral surface thereof, A socket having a cylindrical shape having an inner diameter larger than an outer diameter, and having a locking piece that is locked to the outer peripheral unevenness which is the unevenness of the outer peripheral surface of the corrugated pipe material when mounted on the outer periphery of the corrugated pipe material. A rotary lock body formed in a cylindrical shape having an inner diameter larger than the outer diameter of the socket and screwed onto the outer circumference of the socket, wherein the socket has a plurality of parts each constituting a part of the cylinder. A cylindrical portion is provided, and the plurality of partial cylindrical portions are fitted into each other to form a cylindrical shape, so that the outer circumference of one end portion of the corrugated pipe material on one side and the outer periphery of the one end portion of the corrugated pipe material on the other side are formed. The socket is mounted and the pair of corrugated tubes The outer periphery of the socket mounted on the rotary lock body that is screwed, the end portions of the pair of corrugated tubing is connected.

本開示に係る管継手によると、一対の波付管材が簡易な構造で容易に接続される。 According to the pipe joint of the present disclosure, the pair of corrugated pipe members is easily connected with a simple structure.

一対の波付管材３Ａ，３Ｂを接続した状態の、管継手１の平面図である。It is a top view of pipe fitting 1 in the state where a pair of corrugated pipe materials 3A and 3B were connected. 図１の状態を、軸Ｏを含む断面で見た場合の断面図である。It is sectional drawing at the time of seeing the state of FIG. 1 in the cross section containing the axis O. FIG. 第１部分円筒部１１および第２部分円筒部１２が開放された状態の、ソケット１０の内周面側の斜視図である。It is a perspective view of the inner peripheral surface side of the socket 10 in a state where the first partial cylindrical portion 11 and the second partial cylindrical portion 12 are opened. 第１部分円筒部１１および第２部分円筒部１２が開放された状態の、ソケット１０の外周面側の斜視図である。It is a perspective view of the outer peripheral surface side of the socket 10 in a state where the first partial cylindrical portion 11 and the second partial cylindrical portion 12 are opened. 回転ロック体３０の斜視図である。It is a perspective view of a rotation lock body 30.

＜概要＞
本開示で例示する管継手は、一対の波付管材の端部同士を接続する。波付管材の外周面には、規則的な凹凸が形成されている。本開示で例示する管継手は、ソケットと回転ロック体を備える。ソケットは、波付管材の外径よりも内径が大きい円筒状となる。また、ソケットは、波付管材の外周に装着された際に、波付管材の外周面の凹凸である外周凹凸に形成される係止片を有する。回転ロック体は、円筒状となった状態のソケットの外径よりも内径が大きい円筒状に形成される。また、回転ロック体は、円筒状となった状態のソケットの外周に螺合される。ソケットは、それぞれが円筒の一部を構成する複数の部分円筒部を備える。複数の部分円筒部が互いに嵌め合わされて円筒状となることで、一方の波付管材の一端部の外周と、他方の波付管材の一端部の外周に亘ってソケットが装着される。一対の波付管材に装着されたソケットの外周に、回転ロック体が螺合されることで、一対の波付管材の端部同士が接続される。 <Outline>
The pipe joint illustrated in the present disclosure connects end portions of a pair of corrugated pipe members. Regular corrugations are formed on the outer peripheral surface of the corrugated pipe material. The pipe joint illustrated in the present disclosure includes a socket and a rotation lock body. The socket has a cylindrical shape having an inner diameter larger than the outer diameter of the corrugated pipe material. Further, the socket has a locking piece formed on the outer peripheral unevenness which is the unevenness of the outer peripheral surface of the corrugated pipe material when mounted on the outer periphery of the corrugated pipe material. The rotation lock body is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the socket in the cylindrical shape. Further, the rotation lock body is screwed onto the outer circumference of the cylindrical socket. The socket includes a plurality of partial cylindrical portions each forming a part of a cylinder. The plurality of partial cylindrical portions are fitted into each other to form a cylindrical shape, so that the socket is mounted over the outer circumference of one end portion of one corrugated pipe material and the outer periphery of the one end portion of the other corrugated pipe material. The end portions of the pair of corrugated pipe members are connected to each other by screwing the rotation lock body onto the outer circumferences of the sockets attached to the pair of corrugated pipe members.

本開示で例示する管継手によると、作業者は、ソケットにおける複数の部分円筒部を嵌め合わせて円筒状とするだけで、一方の波付管材の一端部と、他方の波付管材の一端部の両方に亘って容易にソケットを装着することができる。次いで、作業者は、波付管材に装着したソケットの外周に、回転ロック体を螺合することで、一対の波付管材同士を容易に接続することができる。つまり、作業者は、細長い波付管材を回転させずに、波付管材よりも軸方向の長さが短い回転ロック体を回転させることで、一対の波付管材を接続することも可能である。ボルトを締めつけるような細かい作業も不要であり、ボルトを締めつけるための複雑な構成等も必要無い。従って、一対の波付管材が、簡易な構成で容易に接続される。 According to the pipe joint illustrated in the present disclosure, an operator only needs to fit a plurality of partial cylindrical portions in the socket into a cylindrical shape, and one end portion of one corrugated pipe material and one end portion of the other corrugated pipe material. The socket can be easily attached to both of the above. Next, the worker can easily connect the pair of corrugated pipe members to each other by screwing the rotation lock body onto the outer circumference of the socket attached to the corrugated pipe members. That is, the worker can connect the pair of corrugated pipe members by rotating the rotation lock body having a shorter axial length than the corrugated pipe member without rotating the elongated corrugated pipe member. . There is no need for detailed work such as tightening bolts, and no complicated structure for tightening bolts is required. Therefore, the pair of corrugated pipe members is easily connected with a simple structure.

一例として、以下に示す実施形態の部分円筒部は２つの半円筒部である。しかし、部分円筒部の数および形状等は適宜設定できる。例えば、ソケットの本体は３つ以上の部分円筒部を備えていてもよい。 As an example, the partial cylindrical portion of the embodiment described below is two semi-cylindrical portions. However, the number and shape of the partial cylindrical portions can be set appropriately. For example, the body of the socket may include more than two partial cylinders.

なお、本開示における管継手によって接続可能な波付管材は、螺旋型の波付管材であってもよいし、独立リング型の波付管材であってもよい。前述したように、螺旋型の波付管材では、内周面および外周面の凹凸が螺旋形状に形成されている。独立リング型の波付管材では、それぞれが独立した複数のリング状の凸部が、内周面および外周面に規則的に形成されている。また、ソケットのうち、波付管材の外周凹凸に係止される係止片は、螺旋型および独立リング型の両方の外周凹凸に係止される形状に形成されていてもよい。この場合、１つの管継手によって、螺旋型および独立リング型の両方の波付管材を接続することが可能である。ただし、螺旋型の波付管材の外周凹凸に係止される係止片の構造と、独立リング型の波付管材の外周凹凸に係止される係止片の構造は、異なっていてもよい。 The corrugated pipe material connectable by the pipe joint in the present disclosure may be a spiral corrugated pipe material or an independent ring corrugated pipe material. As described above, in the spiral corrugated pipe material, the irregularities on the inner peripheral surface and the outer peripheral surface are formed in a spiral shape. In the independent ring type corrugated pipe material, a plurality of independent ring-shaped protrusions are regularly formed on the inner peripheral surface and the outer peripheral surface. In addition, in the socket, the locking piece that is locked to the outer peripheral unevenness of the corrugated pipe material may be formed in a shape that is locked to both the outer peripheral unevenness of the spiral type and the independent ring type. In this case, it is possible to connect both spiral type and independent ring type corrugated pipe materials with one pipe joint. However, the structure of the locking piece that is locked to the outer peripheral irregularities of the spiral corrugated pipe material may be different from the structure of the locking piece that is locked to the outer peripheral irregularities of the independent ring corrugated pipe material. .

管継手は、１つのソケットに対して一対（２つ）の回転ロック体を備えていてもよい。波付管材に装着されたソケットの軸方向両側の各々から、一対の回転ロック体の各々が螺合されることで、一対の波付管材の端部同士が接続されてもよい。例えば、ソケットに装着された一対の回転ロック体のうちの一方に、意図しない回転力が加わってしまった場合でも、回転力が加わった回転ロック体の軸方向への移動が、他方の回転ロック体によって規制され得る。また、一対の回転ロック体のうちの一方がソケットから外れてしまった場合でも、他方の回転ロック体によってソケットの固定状態が保持される場合もある。よって、１つのソケットに対して一対の回転ロック体が使用される場合には、１つの回転ロック体が使用される場合に比べて、より確実にソケットが回転ロック体によって波付管材に固定される。ただし、１つのソケットに対して１つの回転ロック体を使用することも可能である。 The pipe joint may include a pair (two) of rotation lock bodies for one socket. The ends of the pair of corrugated pipe materials may be connected to each other by screwing each of the pair of rotation lock bodies from each of both axial sides of the socket mounted on the corrugated pipe material. For example, even if an unintended rotational force is applied to one of the pair of rotation lock bodies mounted in the socket, the axial movement of the rotation lock body to which the rotation force is applied causes the rotation lock body of the other rotation lock body to move. It can be regulated by the body. Further, even when one of the pair of rotation lock bodies is disengaged from the socket, the other rotation lock body may retain the fixed state of the socket. Therefore, when a pair of rotation lock bodies is used for one socket, the socket is more securely fixed to the corrugated pipe material by the rotation lock body as compared with the case where one rotation lock body is used. It However, it is also possible to use one rotation lock body for one socket.

ソケットは、係合部および被係合部を備えていてもよい。係合部および被係合部は、複数の部分円筒部を嵌め合わせた際に互いに係合することで、複数の部分円筒部を円筒状に接続する。この場合、作業者は、係合部および被係合部によって複数の部分円筒部が円筒状に接続された状態で、ソケットの外周に回転ロック体を螺合させることができる。従って、作業効率がさらに向上する。 The socket may include an engaging portion and an engaged portion. The engaging portion and the engaged portion engage with each other when the plurality of partial cylindrical portions are fitted to each other, thereby connecting the plurality of partial cylindrical portions into a cylindrical shape. In this case, the worker can screw the rotation lock body onto the outer circumference of the socket in a state where the plurality of partial cylindrical portions are cylindrically connected by the engaging portion and the engaged portion. Therefore, work efficiency is further improved.

ソケットはヒンジ部を備えていてもよい。ヒンジ部は、複数の部分円筒部の一端部同士を接続すると共に、ソケットの軸方向と平行な回転軸を中心として、一方の部分円筒部を他方の部分円筒部に対して回動させる。この場合、作業者は、ヒンジ部を中心として部分円筒部を回動させる（開閉させる）だけで、ソケットを容易に波付管材に装着することができる。また、複数の部分円筒部が完全に分離されている場合に比べて、部材の管理も容易である。 The socket may include a hinge portion. The hinge portion connects one end portions of the plurality of partial cylindrical portions to each other and rotates one partial cylindrical portion with respect to the other partial cylindrical portion about a rotation axis parallel to the axial direction of the socket. In this case, the worker can easily attach the socket to the corrugated pipe material only by rotating (opening and closing) the partial cylindrical portion around the hinge portion. In addition, the management of the members is easier than in the case where the plurality of partial cylindrical portions are completely separated.

ただし、ヒンジ部を設けずに、複数の部分円筒部を分離させることも可能である。この場合、作業者は、複数の部分円筒部が円筒状となるように位置を合わせながら、部分円筒部同士を嵌め合わせればよい。 However, it is also possible to separate a plurality of partial cylindrical portions without providing a hinge portion. In this case, the operator may fit the partial cylindrical parts together while aligning the positions so that the plurality of partial cylindrical parts are cylindrical.

ソケットは、回転ロック体が螺合されるネジ山を外周面に備えていてもよい。この場合、作業者は、回転ロック体を適切にソケットの外周に螺合させることができる。 The socket may be provided with a screw thread on the outer peripheral surface to which the rotation lock body is screwed. In this case, the worker can appropriately screw the rotation lock body onto the outer circumference of the socket.

なお、回転ロック体の内周面にネジ山が形成されていてもよい。この場合、ソケットの外周面には、ネジ山でなく、回転ロック体のネジ山に噛み合う爪部が形成されていてもよい。 A screw thread may be formed on the inner peripheral surface of the rotation lock body. In this case, the outer peripheral surface of the socket may be formed with a claw portion that meshes with the thread of the rotation lock body instead of the thread.

ソケットの内周面のうち、軸方向における少なくともいずれかの位置に、内周面の周方向に亘って、波付管材の外周面とソケットの内周面の間を密封して液体の浸透を防止する止水材が設けられていてもよい。この場合、管継手による一対の波付管材の接続部分から液体（例えば水）が内部へ浸透することが、止水材によってさらに抑制される。 At least at any position in the axial direction on the inner peripheral surface of the socket, the space between the outer peripheral surface of the corrugated pipe material and the inner peripheral surface of the socket is sealed over the circumferential direction of the inner peripheral surface to prevent the permeation of liquid. A water blocking material for preventing may be provided. In this case, penetration of the liquid (for example, water) into the inside from the connecting portion of the pair of corrugated pipe materials by the pipe joint is further suppressed by the water blocking material.

＜実施形態＞
（各部材の概略）
以下、本開示における典型的な実施形態について、図面を参照して説明する。まず、図１および図２を参照して、本実施形態の管継手１が備える各部材について、概略的に説明する。本実施形態の管継手１は、ソケット１０および回転ロック体３０を備える。 <Embodiment>
(Outline of each member)
Hereinafter, typical embodiments of the present disclosure will be described with reference to the drawings. First, each member included in the pipe joint 1 of the present embodiment will be schematically described with reference to FIGS. 1 and 2. The pipe joint 1 of the present embodiment includes a socket 10 and a rotation lock body 30.

ソケット１０は、一対の波付管材３Ａ，３Ｂの外周に装着される。詳細には、ソケット１０は、一方の波付管材３Ａの一端部（図１および図２では紙面右側の端部）の外周と、他方の波付管材３Ｂの一端部（図１および図２では紙面左側の端部）の外周に亘って装着される。波付管材３Ａ，３Ｂに装着された状態のソケットの形状は、円筒状となる。 The socket 10 is mounted on the outer circumference of the pair of corrugated pipe members 3A and 3B. More specifically, the socket 10 has an outer circumference of one end portion (an end portion on the right side of the paper surface in FIGS. 1 and 2) of one corrugated pipe material 3A and one end portion of the other corrugated pipe material 3B (in FIGS. 1 and 2). It is mounted over the outer periphery of the left side of the paper). The shape of the socket mounted on the corrugated pipe materials 3A and 3B is a cylindrical shape.

回転ロック体３０は、円筒状の部材であり、波付管材３Ａ，３Ｂに装着されたソケット１０の外周に螺合される。つまり、作業者によって回転ロック体３０が回転されると、回転ロック体３０は、波付管材３Ａ，３Ｂおよびソケット１０に対して、軸Ｏに沿う方向に移動する。回転ロック体３０がソケット１０に螺合されて装着されることで、波付管材３Ａ，３Ｂに対してソケット１０が固定される。その結果、一対の波付管材３Ａ，３Ｂが管継手１によって接続される。 The rotation lock body 30 is a cylindrical member and is screwed onto the outer periphery of the socket 10 mounted on the corrugated pipe members 3A and 3B. That is, when the rotation lock body 30 is rotated by the worker, the rotation lock body 30 moves in the direction along the axis O with respect to the corrugated pipe members 3A and 3B and the socket 10. When the rotation lock body 30 is screwed into the socket 10 and attached, the socket 10 is fixed to the corrugated pipe members 3A and 3B. As a result, the pair of corrugated pipe members 3A and 3B are connected by the pipe joint 1.

（波付管材）
図１および図２を参照して、本実施形態の管継手１によって接続固定される波付管材３Ａ，３Ｂについて説明する。波付管材３Ａ，３Ｂには、適度に撓むことが可能なＦＥＰ管等を用いることができる。波付管材３Ａ，３Ｂの材質には、例えば、ポリエチレン、ポリカーボネート、ＡＢＳ、ポリプロピレン等の種々の材質を採用できる。波付管材３Ａ，３Ｂの外周面（本実施形態では、外周面および内周面の各々）には、規則的な波型の凹凸が形成されている。 (Corrugated pipe material)
With reference to Drawing 1 and Drawing 2, corrugated pipe materials 3A and 3B which are connected and fixed by pipe fitting 1 of this embodiment are explained. As the corrugated pipe materials 3A and 3B, it is possible to use an FEP pipe or the like that can be appropriately bent. As the material of the corrugated pipe materials 3A and 3B, various materials such as polyethylene, polycarbonate, ABS and polypropylene can be adopted. Regular corrugated irregularities are formed on the outer peripheral surfaces (in the present embodiment, the outer peripheral surface and the inner peripheral surface) of the corrugated pipe materials 3A and 3B.

詳細には、本実施形態の管継手１は、螺旋型の波付管材３Ａ，３Ｂを接続するために用いられる。螺旋型の波付管材３Ａ，３Ｂでは、外周面に形成された外周凹凸、および、内周面に形成された内周凹凸が、共に螺旋状に形成されている。ただし、本実施形態で例示する技術は、一対の独立リング型の波付管材を接続する管継手にも適用できる。独立リング型の波付管材では、それぞれが独立した複数のリング状の凸部が、外周面に規則的に形成されている。また、本実施形態で例示する技術は、種類が互いに異なる一対の波付管材（例えば、螺旋型の波付管材と、独立リング型の波付管材）を接続する管継手にも適用できる。 Specifically, the pipe joint 1 of the present embodiment is used for connecting the spiral corrugated pipe members 3A and 3B. In the spiral corrugated pipe materials 3A and 3B, both the outer peripheral irregularities formed on the outer peripheral surface and the inner peripheral irregularities formed on the inner peripheral surface are spirally formed. However, the technique illustrated in the present embodiment can be applied to a pipe joint that connects a pair of independent ring type corrugated pipe members. In the independent ring type corrugated pipe material, a plurality of independent ring-shaped protrusions are regularly formed on the outer peripheral surface. The technique illustrated in the present embodiment can also be applied to a pipe joint that connects a pair of corrugated pipe members of different types (for example, a spiral corrugated pipe member and an independent ring corrugated pipe member).

（ソケット）
図３および図４を参照して、ソケット１０について説明する。ソケット１０は、硬質の材質（例えば樹脂等）によって形成される。本実施形態のソケット１０は、複数の部分円筒部１１，１２を備える。複数の部分円筒部１１，１２は、それぞれが円筒の一部を構成し、組み付けられた際の形状が円筒状となる部材である。一例として、本実施形態では、それぞれが半円筒状である第１部分円筒部１１および第２部分円筒部１２が互いに嵌め合わされることで、ソケット１０の本体が円筒状となる。円筒状となった状態のソケット１０の内径は、波付管材３Ａ，３Ｂの外径（最大外径）よりも大きい。 (socket)
The socket 10 will be described with reference to FIGS. 3 and 4. The socket 10 is made of a hard material (for example, resin). The socket 10 of this embodiment includes a plurality of partial cylindrical portions 11 and 12. Each of the plurality of partial cylindrical portions 11 and 12 is a member that constitutes a part of a cylinder and has a cylindrical shape when assembled. As an example, in the present embodiment, the first partial cylindrical portion 11 and the second partial cylindrical portion 12 each having a semi-cylindrical shape are fitted to each other, so that the body of the socket 10 has a cylindrical shape. The inner diameter of the socket 10 in the cylindrical shape is larger than the outer diameter (maximum outer diameter) of the corrugated pipe members 3A and 3B.

ソケット１０は、ヒンジ部１７を備える。本実施形態のヒンジ部１７は、２つの部分円筒部１１，１２のうち、軸方向に交差する方向の一端部同士を接続する。また、ヒンジ部１７は、ソケット１０の軸方向と平行な回転軸を中心として、一方の部分円筒部を他方の部分円筒部に対して回動させる。従って、作業者は、ヒンジ部１７を中心として部分円筒部１１，１２を回動させるだけで、ソケット１０を容易に円筒状に嵌め合わせることができる。 The socket 10 includes a hinge portion 17. The hinge portion 17 of the present embodiment connects one end portion of the two partial cylindrical portions 11 and 12 in the direction intersecting the axial direction. Further, the hinge part 17 rotates one partial cylindrical part with respect to the other partial cylindrical part about a rotation axis parallel to the axial direction of the socket 10. Therefore, the worker can easily fit the socket 10 into a cylindrical shape simply by rotating the partial cylindrical portions 11 and 12 about the hinge portion 17.

ソケット１０は、係合部１４および被係合部１５を備える。係合部１４および被係合部１５は、２つの部分円筒部１１，１２が円筒状に嵌め合わされた際に互いに係合することで、２つの部分円筒部１１，１２を円筒状の状態で接続する。一例として、本実施形態では、第１部分円筒部１１におけるヒンジ部１７と反対側の部位のうち、軸方向における両端部の各々と、軸方向における中央部に、爪状の係合部１４が設けられている。また、第２部分円筒部１２におけるヒンジ部１７と反対側の部位のうち、３つの係合部１４の各々と軸方向に一致する位置に、矩形孔である被係合部１５が設けられている。ヒンジ部１７を中心として部分円筒部１１，１２が回動されると、係合部１４が被係合部１５に係合する。なお、係合部１４および被係合部１５の数、位置、および形状等を適宜変更できることは言うまでもない。 The socket 10 includes an engaging portion 14 and an engaged portion 15. The engaging portion 14 and the engaged portion 15 engage with each other when the two partial cylindrical portions 11 and 12 are fitted into each other in a cylindrical shape, so that the two partial cylindrical portions 11 and 12 are in a cylindrical state. Connecting. As an example, in the present embodiment, the claw-shaped engaging portion 14 is provided at each of both end portions in the axial direction and the central portion in the axial direction of the portion of the first partial cylindrical portion 11 opposite to the hinge portion 17. It is provided. Further, the engaged portion 15 which is a rectangular hole is provided at a position on the opposite side of the hinge portion 17 in the second partial cylindrical portion 12 to each of the three engaging portions 14 in the axial direction. There is. When the partial cylindrical portions 11 and 12 are rotated around the hinge portion 17, the engaging portion 14 engages with the engaged portion 15. It goes without saying that the numbers, positions, shapes, etc. of the engaging portions 14 and the engaged portions 15 can be changed as appropriate.

図３に示すように、ソケット１０は係止片１９を備える。係止片１９は、ソケット１０が波付管材３Ａ，３Ｂの外周に装着された際に、波付管材３Ａ，３Ｂの外周凹凸に係止される。一例として、本実施形態の係止片１９は、部分円筒部１１，１２の内周面から内側に突出するリブである。詳細には、本実施形態の係止片１９は、２つの部分円筒部１１，１２が円筒状に組み付けられた際に、波付管材３Ａ，３Ｂの外周凹凸の螺旋形状に一致する螺旋形状に延びるリブである。係止片１９をリブ状とする場合には、突起等を用いる場合に比べて、波付管材３Ａ，３Ｂの外周凹凸と係止片１９の接触面積がより広くなり、接続固定の安定性が向上する。また、係止片１９をリブ状とする場合には、後述する止水材５（図２参照）が充填される範囲が係止片１９によって適切に区画される。 As shown in FIG. 3, the socket 10 includes a locking piece 19. When the socket 10 is mounted on the outer circumferences of the corrugated pipe materials 3A and 3B, the locking pieces 19 are locked to the outer peripheral irregularities of the corrugated pipe materials 3A and 3B. As an example, the locking piece 19 of the present embodiment is a rib that protrudes inward from the inner peripheral surfaces of the partial cylindrical portions 11 and 12. Specifically, the locking piece 19 of the present embodiment has a spiral shape that matches the spiral shape of the outer peripheral irregularities of the corrugated pipe materials 3A and 3B when the two partial cylindrical portions 11 and 12 are assembled in a cylindrical shape. It is a rib that extends. When the locking piece 19 is formed in a rib shape, the contact area between the outer peripheral irregularities of the corrugated pipe materials 3A and 3B and the locking piece 19 is wider than in the case of using a projection or the like, and the stability of connection and fixation is improved. improves. When the locking piece 19 is formed in a rib shape, the locking piece 19 appropriately partitions the range where the water blocking material 5 (see FIG. 2) described later is filled.

また、本実施形態では、ソケット１０の軸方向に異なる位置に、複数の係止片１９が設けられている。詳細には、本実施形態の係止片１９は、ソケット１０（部分円筒部１１，１２）の内周面のうち、軸方向の中央よりも一端側の部位と他端側の部位の各々に設けられている。その結果、接続固定の安定性が向上する。 Further, in the present embodiment, the plurality of locking pieces 19 are provided at different positions in the axial direction of the socket 10. Specifically, the locking piece 19 of the present embodiment is provided on each of the inner peripheral surface of the socket 10 (partial cylindrical portions 11 and 12) on one end side and the other end side of the axial center. It is provided. As a result, the stability of connection fixing is improved.

さらに、本実施形態の係止片１９には補強部２０が設けられている。補強部２０は、リブ状の係止片１９の板面と、部分円筒部１１，１２の内周面との間に設けられる。一例として、本実施形態の補強部２０は複数の小型のリブである。補強部２０が設けられることで、係止片１９の強度が向上すると共に、接続固定の安定性もさらに向上する。 Further, the locking piece 19 of this embodiment is provided with a reinforcing portion 20. The reinforcing portion 20 is provided between the plate surface of the rib-shaped locking piece 19 and the inner peripheral surfaces of the partial cylindrical portions 11 and 12. As an example, the reinforcing portion 20 of the present embodiment is a plurality of small ribs. By providing the reinforcing portion 20, the strength of the locking piece 19 is improved and the stability of connection and fixing is further improved.

図３に示すように、ソケット１０（部分円筒部１１，１２）の内周面には、止水材５（図２参照）が充填される止水材充填部２１が形成されている。止水材充填部２１は、軸方向における少なくともいずれかの位置において、内周面の周方向全体に亘って形成されている。一例として、本実施形態では、ソケット１０の内周面のうち、一対の波付管材３Ａ，３Ｂ（図１および図２参照）の各々の端部が配置される軸方向中央部分に重複するように、２つの係止片１９によって囲まれる略円筒状の領域が、止水材充填部２１とされる。止水材５は、第１部分円筒部１１の内周面における２つの係止片１９の間の領域と、第２部分円筒部１１の内周面における２つの係止片１９の間の領域の各々に、周方向に隙間なく充填される。 As shown in FIG. 3, a water blocking material filling portion 21 filled with the water blocking material 5 (see FIG. 2) is formed on the inner peripheral surface of the socket 10 (partial cylindrical portions 11 and 12). The waterproofing material filling portion 21 is formed over the entire circumferential direction of the inner circumferential surface at least at any position in the axial direction. As an example, in the present embodiment, the ends of the pair of corrugated pipe members 3A and 3B (see FIGS. 1 and 2) on the inner peripheral surface of the socket 10 are overlapped with the central portion in the axial direction. In addition, the substantially cylindrical region surrounded by the two locking pieces 19 serves as the water blocking material filling portion 21. The water blocking material 5 is a region between the two locking pieces 19 on the inner peripheral surface of the first partial cylindrical portion 11 and a region between the two locking pieces 19 on the inner peripheral surface of the second partial cylindrical portion 11. Each of them is filled with no gap in the circumferential direction.

ただし、係止片１９および止水材充填部２１の数、形状、大きさ等を変更することも可能である。例えば、リブ状の係止片１９の代わりに、または、リブ状の係止片１９と共に、リブ状でない係止片が設けられていてもよい。この場合、係止片の形状は、例えば突起状であってもよいし、一部分が開放された略環状のリブであってもよい。係止片の数は、１つでもよいし、３つ以上であってもよい。また、本実施形態では、止水材充填部２１は、２つの係止片１９によって区画されている。しかし、係止片１９とは異なる部材によって止水材充填部が区画されていてもよい。 However, it is also possible to change the number, shape, size, etc. of the locking piece 19 and the water blocking material filling portion 21. For example, instead of the rib-shaped locking piece 19, or together with the rib-shaped locking piece 19, a non-rib-shaped locking piece may be provided. In this case, the shape of the locking piece may be, for example, a protruding shape, or may be a substantially annular rib with a part opened. The number of locking pieces may be one, or may be three or more. Further, in the present embodiment, the water blocking material filling portion 21 is partitioned by the two locking pieces 19. However, the water blocking material filling portion may be partitioned by a member different from the locking piece 19.

止水材充填部２１に充填される止水材５（図２参照）には、種々の止水材を用いることができる。例えば、シリコン系の止水材、およびブチル系の止水材等の少なくともいずれかを、本実施形態の止水材５として使用してもよい。止水材５は、可撓性を有し変形しやすい物質であることが望ましい。この場合、防水性がさらに向上する。また、止水材５は、水および酸素を吸収および透過しない性質を有することが望ましい。この場合、止水材５の劣化等が生じにくい。 Various water blocking materials can be used as the water blocking material 5 (see FIG. 2) filled in the water blocking material filling portion 21. For example, at least one of a silicon-based water blocking material and a butyl-based water blocking material may be used as the water blocking material 5 of the present embodiment. It is desirable that the water blocking member 5 is a flexible and easily deformable substance. In this case, the waterproof property is further improved. Further, it is desirable that the water blocking material 5 has a property of not absorbing and transmitting water and oxygen. In this case, the water blocking material 5 is less likely to deteriorate.

図４に示すように、ソケット１０の外周面にはネジ山２２が設けられている。本実施形態のネジ山２２は、２つの部分円筒部１１，１２の各々外周面に形成されている。２つの部分円筒部１１，１２が円筒状に組み付けられた際に、ネジ山２２は螺旋状となる。ネジ山２２の外周面には回転ロック体３０が螺合される。 As shown in FIG. 4, a screw thread 22 is provided on the outer peripheral surface of the socket 10. The screw thread 22 of the present embodiment is formed on the outer peripheral surface of each of the two partial cylindrical portions 11 and 12. When the two partial cylindrical portions 11 and 12 are assembled in a cylindrical shape, the screw thread 22 has a spiral shape. A rotation lock body 30 is screwed onto the outer peripheral surface of the thread 22.

また、本実施形態におけるソケット１０の軸方向の長さは、回転ロック体３０（図５参照）の軸方向の長さよりも長く設計されている。従って、作業者は、ソケット１０が周方向に回転しないようにソケット１０の一部を押さえつつ、回転ロック体３０をソケット１０の外周に螺合させることも可能である。詳細には、本実施形態におけるソケット１０の軸方向の長さは、２つの回転ロック体３０の軸方向の長さよりも長い。従って、２つの回転ロック体３０を用いてソケット１０を波付管材３Ａ，３Ｂの外周面に固定する場合でも、作業者は、ソケット１０の一部を押さえた状態で作業を行い易い。また、ソケット１０の軸方向の長さが長いので、波付管材３Ａ，３Ｂの外周面とソケット１０の内周面の間に隙間が生じにくい。 Moreover, the axial length of the socket 10 in the present embodiment is designed to be longer than the axial length of the rotation lock body 30 (see FIG. 5). Therefore, the worker can screw the rotation lock body 30 onto the outer periphery of the socket 10 while holding a part of the socket 10 so that the socket 10 does not rotate in the circumferential direction. Specifically, the axial length of the socket 10 in this embodiment is longer than the axial lengths of the two rotation lock bodies 30. Therefore, even when the socket 10 is fixed to the outer peripheral surfaces of the corrugated pipe members 3A and 3B using the two rotation lock bodies 30, the worker can easily perform the work while holding a part of the socket 10. Further, since the axial length of the socket 10 is long, a gap is unlikely to be formed between the outer peripheral surfaces of the corrugated pipe members 3A and 3B and the inner peripheral surface of the socket 10.

（回転ロック体）
図５を参照して、回転ロック体３０について説明する。詳細は後述するが、本実施形態では、１つのソケット１０を波付管材３Ａ，３Ｂに固定するために、２つの回転ロック体３０が使用される。ここで、本実施形態では、１つのソケット１０に対して使用される２つの回転ロック体３０の構成は同一である。従って、以下では、１つの回転ロック体３０について説明を行う。 (Rotation lock body)
The rotation lock body 30 will be described with reference to FIG. Although details will be described later, in this embodiment, two rotation lock bodies 30 are used to fix one socket 10 to the corrugated pipe members 3A and 3B. Here, in this embodiment, the configuration of the two rotation lock bodies 30 used for one socket 10 is the same. Therefore, one rotation lock body 30 will be described below.

回転ロック体３０は、硬質の材質（例えば樹脂等）によって形成される。回転ロック体３０の形状は、円筒状となった状態のソケット１０の外径よりも内径が大きい円筒状である。 The rotation lock body 30 is formed of a hard material (for example, resin). The shape of the rotation lock body 30 is a cylinder whose inner diameter is larger than the outer diameter of the socket 10 in the cylindrical shape.

回転ロック体３０をソケット１０の外周に螺合させるために、回転ロック体３０には螺合爪３２が設けられている。図２に示すように、本実施形態では、回転ロック体３０の本体の内周面において互いに対向する位置に、複数対の螺合爪３２が内側に向けて突出している。その結果、ソケット１０に対する回転ロック体３０の螺合が安定して行われる。 In order to screw the rotation lock body 30 onto the outer periphery of the socket 10, the rotation lock body 30 is provided with a screw claw 32. As shown in FIG. 2, in this embodiment, a plurality of pairs of screwing claws 32 project inward at positions facing each other on the inner peripheral surface of the main body of the rotation lock body 30. As a result, the rotation lock body 30 is screwed into the socket 10 in a stable manner.

回転ロック体３０のうち、軸方向における一方の端部（図５では紙面左下側の端部）には、フランジ部３４が設けられている。フランジ部３４は、回転ロック体３０の一方の端部の全周から外側に向けて延びる環状の部材である。詳細は後述するが、本実施形態では、２つの回転ロック体３０の各々のフランジ部３４が互いに密着するように、２つの回転ロック体３０の各々がソケット１０の外周に螺合される。２つの回転ロック体３０は、各々のフランジ部が大きい圧力で互いに密着された状態で固定される。従って、フランジ部３４が設けられていない場合に比べて、回転ロック体３０によるソケット１０の固定が安定する。 A flange portion 34 is provided at one end of the rotation lock body 30 in the axial direction (the end on the lower left side of the paper surface in FIG. 5). The flange portion 34 is an annular member that extends outward from the entire circumference of one end of the rotation lock body 30. Although details will be described later, in the present embodiment, each of the two rotation lock bodies 30 is screwed onto the outer periphery of the socket 10 so that the respective flange portions 34 of the two rotation lock bodies 30 are in close contact with each other. The two rotation lock bodies 30 are fixed in a state where their respective flange portions are in close contact with each other with a large pressure. Therefore, as compared with the case where the flange portion 34 is not provided, the fixing of the socket 10 by the rotation lock body 30 is stable.

回転ロック体３０の外周面には、軸方向に延びる補強片３６が複数設けられている。それぞれの補強片３６の先端はフランジ部３４に繋がっている。従って、回転ロック体３０の本体およびフランジ部３４の強度が、補強片３６によって増加する。また、補強片３６は、作業者が回転ロック体３０を回転（螺合）させる際の滑り止めとしても機能する。 A plurality of reinforcing pieces 36 extending in the axial direction are provided on the outer peripheral surface of the rotation lock body 30. The tip of each reinforcing piece 36 is connected to the flange portion 34. Therefore, the strength of the main body of the rotation lock body 30 and the flange portion 34 is increased by the reinforcing piece 36. The reinforcing piece 36 also functions as a slip stopper when the worker rotates (screws) the rotation lock body 30.

（一対の波付管材の接続方法）
図２を参照して、本実施形態の管継手１によって一対の波付管材３Ａ，３Ｂを接続する方法について説明する。作業者は、円筒状である２つの回転ロック体３０の各々に、一対の波付管材３Ａ，３Ｂの各々を予め挿通させておく。ここで、作業者は、２つの回転ロック体３０の各々のフランジ部３４が互いに対向するように、２つの回転ロック体３０の向きを調整した状態で、回転ロック体３０に波付管材３Ａ，３Ｂを挿通させる。 (How to connect a pair of corrugated pipe materials)
With reference to FIG. 2, a method of connecting the pair of corrugated pipe members 3A and 3B by the pipe joint 1 of the present embodiment will be described. The operator inserts each of the pair of corrugated pipe members 3A and 3B in advance into each of the two cylindrical rotation lock bodies 30. Here, the operator adjusts the orientations of the two rotation lock bodies 30 so that the respective flange portions 34 of the two rotation lock bodies 30 face each other, and the corrugated pipe material 3A is attached to the rotation lock body 30. Insert 3B.

次いで、作業者は、一方の波付管材３Ａの一端部（図２では紙面右側の端部）の外周と、他方の波付管材３Ｂの一端部（図２では紙面左側の端部）の外周に亘ってソケット１０を装着する。ソケット１０は、波付管材３Ａ，３Ｂの外周に装着されると、波付管材３Ａ，３Ｂの外周凹凸への係止片１９の係止によって、軸Ｏの方向への移動が規制される。また、ソケット１０の止水材充填部２１に充填された止水材５が、波付管材３Ａ，３Ｂの外周面と、ソケット１０の内周面の間の隙間を密封する。その結果、管継手１による一対の波付管材３Ａ，３Ｂの接続部分から液体（例えば水）が内部へ浸透することが、止水材５によってさらに抑制される。 Next, the operator determines the outer circumference of one end of the corrugated pipe 3A (the end on the right side of the paper in FIG. 2) and the outer circumference of the one end of the corrugated pipe 3B (the end on the left side of the paper in FIG. 2). The socket 10 is attached over the entire length. When the socket 10 is mounted on the outer peripheries of the corrugated pipe materials 3A and 3B, the movement of the socket 10 in the direction of the axis O is regulated by the locking pieces 19 locking the outer peripheral irregularities of the corrugated pipe materials 3A and 3B. Further, the water blocking material 5 filled in the water blocking material filling portion 21 of the socket 10 seals the gap between the outer peripheral surfaces of the corrugated pipe materials 3A and 3B and the inner peripheral surface of the socket 10. As a result, the water stop material 5 further suppresses permeation of liquid (for example, water) into the inside from the connecting portion of the pair of corrugated pipe materials 3A and 3B by the pipe joint 1.

次いで、作業者は、２つの回転ロック体３０の各々をソケット１０の外周に螺合させ、各々の回転ロック体３０をソケット１０の中央部に近づく方向に移動させていく。各々の回転ロック体３０のフランジ部３４が互いに接触すると、作業者は、２つの回転ロック体３０の少なくとも一方をさらに締め付ける。その結果、２つの回転ロック体３０は、各々のフランジ部が大きい圧力で互いに密着された状態で固定される。以上の作業によって、一対の波付管材３Ａ，３Ｂは、高い防水性が保たれた状態で、簡易な工程によって接続される。 Next, the worker screws each of the two rotation lock bodies 30 onto the outer periphery of the socket 10 and moves each of the rotation lock bodies 30 toward the center of the socket 10. When the flange portions 34 of the respective rotation lock bodies 30 come into contact with each other, the worker further tightens at least one of the two rotation lock bodies 30. As a result, the two rotary lock bodies 30 are fixed in a state where their respective flange portions are in close contact with each other with a large pressure. Through the above work, the pair of corrugated pipe members 3A and 3B are connected by a simple process while maintaining high waterproofness.

１管継手
３Ａ，３Ｂ波付管材
５止水材
１０ソケット
１１第１部分円筒部
１２第２部分円筒部
１４係合部
１５被係合部
１７ヒンジ部
１９係止片
２１止水材充填部
２２ネジ山
３０回転ロック体
３２螺合爪
３４フランジ部

DESCRIPTION OF SYMBOLS 1 Pipe joints 3A, 3B Corrugated pipe material 5 Water blocking material 10 Socket 11 First partial cylindrical portion 12 Second partial cylindrical portion 14 Engaging portion 15 Engaged portion 17 Hinge portion 19 Locking piece 21 Water blocking material filling portion 22 Screw thread 30 rotation lock body 32 screwing claw 34 flange portion

Claims

A pipe joint that connects the ends of a pair of corrugated pipe materials having at least an outer peripheral surface with regular irregularities,
A locking member that has a cylindrical shape with an inner diameter larger than the outer diameter of the corrugated pipe material and that is locked to the outer peripheral irregularities of the outer peripheral surface of the corrugated pipe material when mounted on the outer periphery of the corrugated pipe material. A socket having a piece,
A rotation lock body which is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the socket and is screwed onto the outer periphery of the socket,
Equipped with
The socket includes a plurality of partial cylindrical portions each forming a part of a cylinder,
The plurality of partial cylindrical portions are fitted to each other into a cylindrical shape, so that the socket is mounted over the outer circumference of one end of the corrugated pipe material on one side and the outer circumference of the one end portion of the other corrugated pipe material. ,
A pipe joint characterized in that ends of the pair of corrugated pipe members are connected to each other by screwing the rotation lock body onto the outer periphery of the socket mounted on the pair of corrugated pipe members.

The pipe joint according to claim 1, wherein
A pair of the rotation lock bodies,
The end portions of the pair of corrugated pipe members are connected to each other by screwing each of the pair of rotation lock bodies from each of both axial sides of the socket mounted on the pair of corrugated pipe members. A pipe joint characterized by the following.

The pipe joint according to claim 1 or 2, wherein
The socket is
A pipe joint comprising: an engaging portion and an engaged portion that connect the plurality of partial cylindrical portions in a cylindrical shape by engaging with each other when the plurality of partial cylindrical portions are fitted together.

The pipe joint according to any one of claims 1 to 3,
The socket is
A hinge portion that connects one end portions of the plurality of partial cylindrical portions to each other and rotates one of the partial cylindrical portions with respect to the other of the partial cylindrical portions about a rotation axis parallel to the axial direction of the socket. A pipe joint characterized by being further provided.

The pipe joint according to any one of claims 1 to 4,
The socket is
A pipe joint characterized in that a screw thread with which the rotation lock body is screwed is provided on an outer peripheral surface.

The pipe joint according to any one of claims 1 to 5,
At least at any position in the axial direction of the inner peripheral surface of the socket, the liquid is sealed between the outer peripheral surface of the corrugated pipe material and the inner peripheral surface of the socket over the circumferential direction of the inner peripheral surface. A pipe joint, which is provided with a water blocking material for preventing the permeation of water.