JP5955669B2

JP5955669B2 - Receptacle structure for conduit

Info

Publication number: JP5955669B2
Application number: JP2012151601A
Authority: JP
Inventors: 早川　和行; 和行早川
Original assignee: Mirai Kogyo KK
Current assignee: Mirai Kogyo KK
Priority date: 2012-07-05
Filing date: 2012-07-05
Publication date: 2016-07-20
Anticipated expiration: 2032-07-05
Also published as: JP2014017898A

Description

この発明は、硬質塩化ビニル電線管とか合成樹脂製の波付き電線管が接続される、電線管用の受口構造に関するものである。 The present invention relates to a receptacle structure for a conduit tube to which a hard polyvinyl chloride conduit tube or a corrugated conduit tube made of synthetic resin is connected.

従来、内外面が平滑な硬質塩化ビニル電線管が接続される接続体として、例えばケーブル引込用キャップがあった（例えば、特許文献１参照）。このケーブル引込用キャップは、ケーブル（電線）の引込孔と、電線管が挿入されて接続される受口とを有していた。そこで、ケーブルは、一旦、引込孔からキャップ内に入り、その後に、受口を通って電線管内へと配設された。 Conventionally, as a connection body to which a hard polyvinyl chloride conduit having a smooth inner and outer surface is connected, for example, there is a cable lead-in cap (for example, see Patent Document 1). This cable lead-in cap had a cable (electric wire) lead-in hole and a receiving port to which a conduit tube was inserted and connected. Therefore, the cable once entered the cap from the lead-in hole, and was then disposed in the conduit through the receiving port.

特開２００２−２３８１３２号公報JP 2002-238132 A

ところで、前記従来のケーブル引込用キャップにおいては、受口へ、内外面が平滑な硬質塩化ビニル電線管を接続するにあたっては、もっぱら接着により行なっていた。そのため、電線管とか受口に接着材を塗布したり、接着力が所要の強度に達するまで養生する必要があったりと、その接続作業に手間がかかっていた。また、一般に、電線管が接続される接続体において、その電線管が、内外面が平滑な電線管である場合と波付き電線管である場合とで、異なる接続体を用意する必要があり、施工性がよくなかった。 By the way, in the said conventional cable drawing-in cap, when connecting the rigid polyvinyl chloride electric wire pipe | tube with a smooth inner and outer surface to a receptacle, it was performed only by adhesion | attachment. For this reason, it takes time and effort to apply an adhesive to the conduit or the receptacle, or to cure the adhesive until the adhesive strength reaches a required strength. In general, in the connection body to which the conduit is connected, it is necessary to prepare different connection bodies depending on whether the conduit is a conduit with a smooth inner or outer surface or a corrugated conduit. Workability was not good.

この発明は、上記した従来の欠点を解決するためになされたものであり、その目的とするところは、配管の施工性を高めることができる、電線管用の受口構造を提供することにある。 The present invention has been made to solve the above-described conventional drawbacks, and an object of the present invention is to provide a receptacle structure for a conduit that can improve the workability of piping.

この発明に係る電線管用の受口構造は、前記目的を達成するために、次の構成からなる。すなわち、
請求項１に記載の発明に係る電線管用の受口構造は、外面に軸方向に沿って凹凸が連続して設けられて可とう性を有する合成樹脂製の波付き電線管と、前記波付き電線管の凹凸形状における最小外径よりも大きい外径を有する、内外面が平滑な硬質塩化ビニル電線管とが、選択的に接続される受口の構造である。ここで、前記受口には、その受口の内方かつ奥方へ向けて傾斜するように突出してその受口に挿入される前記硬質塩化ビニル電線管あるいは波付き電線管をその外面側において係止する複数の係止爪が、前記受口の周方向に沿って配置される。そこで、前記係止爪は、前記受口に挿入される前記硬質塩化ビニル電線管の移動に伴って前記受口の奥方側へと倒れるように傾動することにより、前記硬質塩化ビニル電線管の挿入を許容するとともに、前記受口から抜け出ようとする前記硬質塩化ビニル電線管に対しては、その硬質塩化ビニル電線管の外面を係止することにより、その硬質塩化ビニル電線管の抜け出を規制する。また、前記係止爪は、前記受口に挿入される前記波付き電線管の移動に伴って前記受口の奥方側へと倒れるように傾動することにより、前記波付き電線管の挿入を許容するとともに、前記受口から抜け出ようとする前記波付き電線管に対しては、その波付き電線管の凹凸が連続する外面を係止することにより、その波付き電線管の抜け出を規制する。そして、前記受け口には、前記硬質塩化ビニル電線管との間を密封し、また、前記波付き電線管との間を密封する、パッキンが設けられ、そのパッキンは、前記係止爪よりも手前に位置する。また、前記係止爪が、前記波付き電線管の外面における凹部に進入するようにしてその凹部の側面を係止した状態で、前記パッキンは、前記波付き電線管の外面における凸部の頂面に当接する。 The receptacle structure for a conduit according to the present invention has the following configuration in order to achieve the object. That is,
The conduit structure for a conduit according to the first aspect of the present invention includes a corrugated conduit tube made of a synthetic resin and having flexibility, with unevenness continuously provided along an axial direction on an outer surface, and the corrugated conduit This is a receiving port structure that is selectively connected to a rigid polyvinyl chloride conduit having a smooth inner and outer surfaces, and having an outer diameter larger than the minimum outer diameter in the concave-convex shape of the conduit. Here, the outer end of the receptacle is connected with the rigid polyvinyl chloride conduit or the corrugated conduit inserted into the receptacle protruding so as to incline toward the inside and the depth of the receptacle. A plurality of locking claws to be stopped are arranged along the circumferential direction of the receiving port. Therefore, the locking claw is tilted so as to fall to the back side of the receiving port as the hard vinyl chloride conduit tube inserted into the receiving port moves, whereby the insertion of the hard vinyl chloride conduit tube is performed. In addition, the hard vinyl chloride conduit tube that is about to come out of the receptacle is restricted by locking the outer surface of the hard vinyl chloride conduit tube. . In addition, the locking claw allows the insertion of the corrugated conduit by tilting so that the corrugated conduit inserted into the receiving port moves to the back side of the receiving port with the movement of the corrugated conduit. At the same time, with respect to the corrugated conduit that is about to escape from the receptacle, the corrugated conduit is prevented from coming out by engaging the outer surface where the corrugations of the corrugated conduit are continuous. The receptacle is provided with a packing that seals between the rigid polyvinyl chloride conduit and the corrugated conduit, and the packing is in front of the locking claw. Located in. Further, in the state where the locking claw is engaged with the side surface of the concave portion so as to enter the concave portion on the outer surface of the corrugated conduit, the packing is the top of the convex portion on the outer surface of the corrugated conduit. Contact the surface.

この電線管用の受口構造によると、受口には、その受口の周方向に沿って、係止爪が複数、配置される。ここにおいて、係止爪は、受口の内方かつ奥方へ向けて傾斜するように突出しており、この係止爪が、受口に挿入される硬質塩化ビニル電線管の移動に伴って、受口の奥方へと倒れるように傾動することで、硬質塩化ビニル電線管は、その挿入が阻止されることなく、受口に進入する。反対に、硬質塩化ビニル電線管の、受口からの抜け出に対しては、係止爪が硬質塩化ビニル電線管の外面を係止することで、その抜け出が規制される。そして、波付き電線管においても、前記係止爪が、受口に挿入される波付き電線管の移動に伴って、受口の奥方へと倒れるように傾動することで、波付き電線管は、その挿入が阻止されることなく、受口に進入する。反対に、波付き電線管の、受口からの抜け出に対しては、係止爪が波付き電線管の凹凸が連続する外面を係止することで、その抜け出が規制される。こうして、硬質塩化ビニル電線管または波付き電線管は、接着の必要もなく、受口に接続される。また、こうして、受口に、硬質塩化ビニル電線管と波付き電線管とを選択的に接続することができ、このため、これら硬質塩化ビニル電線管と波付き電線管とで、異なる受口構造を備えた接続体を用意する必要がない。 According to the receptacle structure for a conduit, a plurality of locking claws are arranged in the receptacle along the circumferential direction of the receptacle. Here, the locking claw protrudes so as to incline toward the inner side and the back side of the receiving port, and this locking claw is received by the movement of the rigid polyvinyl chloride conduit tube inserted into the receiving port. By tilting so as to fall to the back of the mouth, the rigid polyvinyl chloride conduit tube enters the receiving port without being prevented from being inserted. On the contrary, when the hard vinyl chloride conduit tube is pulled out from the receiving port, the latching claw locks the outer surface of the hard polyvinyl chloride conduit tube, thereby restricting the slippage. And also in a corrugated conduit, the said claw is tilted so that it may fall down to the back of a receptacle with the movement of the corrugated conduit inserted in a receptacle, , It enters the receiving port without being blocked. On the contrary, when the corrugated conduit is pulled out from the receiving port, the latching claw locks the outer surface where the corrugated conduit is continuous, thereby restricting the exit. Thus, the rigid polyvinyl chloride conduit or corrugated conduit is connected to the receptacle without the need for adhesion. In addition, in this way, the rigid polyvinyl chloride conduit and the corrugated conduit can be selectively connected to the receptacle. For this reason, a different receptacle structure is used for the rigid polyvinyl chloride conduit and the corrugated conduit. There is no need to prepare a connection body equipped with.

また、請求項２に記載の発明に係る電線管用の受口構造は、請求項１に記載の受口構造において、前記硬質塩化ビニル電線管の外径は、前記波付き電線管の前記最小外径よりも大きく、かつ、前記波付き電線管の凹凸形状における最大外径と同一またはそれより小さくなっている。こうして、硬質塩化ビニル電線管の外径を、波付き電線管に対して所要の範囲とすることで、係止爪を、硬質塩化ビニル電線管と波付き電線管とに無理なく係止させることができる。 The receptacle structure for a conduit according to the invention described in claim 2 is the receptacle structure according to claim 1, wherein the outer diameter of the rigid polyvinyl chloride conduit is the minimum outside of the corrugated conduit. It is larger than the diameter, and is equal to or smaller than the maximum outer diameter in the concavo-convex shape of the corrugated conduit. Thus, by setting the outer diameter of the hard polyvinyl chloride conduit to the required range with respect to the corrugated conduit, the latching claw can be reasonably locked to the rigid polyvinyl chloride conduit and the corrugated conduit. Can do .

この発明に係る電線管用の受口構造によれば、受口に係止爪を設けることで、電線管を接続するにあたって、接着の必要がなく、また、硬質塩化ビニル電線管と波付き電線管とで、異なる受口構造を備えた接続体を用意する必要がなく、配管の施工性を高めることができる。 According to the receptacle structure for a conduit according to the present invention, by providing a locking claw in the receptacle, there is no need for adhesion when connecting the conduit, and a rigid polyvinyl chloride conduit and a corrugated conduit Therefore, it is not necessary to prepare a connection body having a different receiving structure, and the workability of piping can be improved.

この発明の一実施の形態の、電線管連結具を示す、一部を破断した正面図である。It is the front view which fractured | ruptured one part which shows the conduit connector of one Embodiment of this invention. 同じく、要部拡大図である。Similarly, it is a principal part enlarged view. 同じく、受口に硬質塩化ビニル電線管を挿入した状態を示す、要部拡大図である。Similarly, it is a principal part enlarged view which shows the state which inserted the hard polyvinyl chloride conduit tube in the receptacle. 同じく、受口に波付き電線管を挿入した状態を示す、要部拡大図である。Similarly, it is a principal part enlarged view which shows the state which inserted the corrugated conduit in the receptacle. 同じく、係止爪体の正面図である。Similarly, it is a front view of a latching claw body. 同じく、図４におけるＡ−Ａ線による断面図である。Similarly, it is sectional drawing by the AA in FIG. この発明の他の実施の形態の、配線ボックスを示す、一部を破断した正面図である。It is the front view which fractured | ruptured partially which shows the wiring box of other embodiment of this invention. この発明のさらに他の実施の形態の、電線管端末キャップを示す、一部を破断した正面図である。It is the front view which fractured | ruptured one part which shows the conduit tube end cap of other embodiment of this invention. この発明のさらに他の実施の形態の、屈曲配線経路形成具を示す、一部を破断した正面図である。It is the front view which fractured | ruptured partially which shows the bending wiring path | route formation tool of further another embodiment of this invention. 係止爪体の変形例を示す、正面図である。It is a front view which shows the modification of a latching claw body. 受口に係止解除部材を設けた、図３−１相当図である。FIG. 3 is a view corresponding to FIG. 3A in which a latch releasing member is provided at the receiving port. フランジ部が形成された硬質塩化ビニル電線管を示す、正面図である。It is a front view which shows the hard polyvinyl chloride electric wire pipe in which the flange part was formed.

以下、この発明に係る電線管用の受口構造を実施するための形態を図面に基づいて説明する。 EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the receptacle structure for electric conduits which concerns on this invention is demonstrated based on drawing.

図１〜図５は、本発明の一実施の形態を示す。図中符号１は、内外面が平滑な硬質塩化ビニル電線管（つまり、内部に電線が配設される、硬質塩化ビニル製の管）を示す。２は、外面に軸方向に沿って凹凸が連続して設けられて可とう性を有する合成樹脂製の波付き電線管（つまり、内部に電線が配設される、波付きの管）を示す。ここで、硬質塩化ビニル電線管１は、波付き電線管２の凹凸形状における最小外径２ａよりも大きい外径を有する。５は、前記波付き電線管２と前記硬質塩化ビニル電線管１とが選択的に接続される受口を示す。 1 to 5 show an embodiment of the present invention. Reference numeral 1 in the figure denotes a hard polyvinyl chloride electric conduit having a smooth inner and outer surfaces (that is, a tube made of hard polyvinyl chloride in which an electric wire is disposed). 2 shows a corrugated conduit tube made of a synthetic resin having irregularities continuously provided along the axial direction on the outer surface (that is, a corrugated tube in which an electric wire is disposed inside). . Here, the hard polyvinyl chloride conduit 1 has an outer diameter larger than the minimum outer diameter 2a in the uneven shape of the corrugated conduit 2. Reference numeral 5 denotes a receiving port to which the corrugated conduit 2 and the rigid polyvinyl chloride conduit 1 are selectively connected.

この受口５の構造（受口構造）にあっては、受口５に、その受口５の内方かつ奥方へ向けて傾斜するように突出してその受口に挿入される硬質塩化ビニル電線管１あるいは波付き電線管２をその外面側において係止する複数の係止爪８ａが、受口５の周方向に沿って配置される。そして、受口５の、係止爪８ａよりも奥方に、硬質塩化ビニル電線管１あるいは波付き電線管２の端面が当たることでそれ以上の硬質塩化ビニル電線管１あるいは波付き電線管２の挿入を制止する制止部５ａが設けられる。もっとも、波付き電線管２の場合は、係止爪８ａが、波付き電線管２の外面の凹部に進入することを考えると、必ずしも、制止部５ａに波付き電線管２の端面が当たるわけではない。 In the structure of the receiving port 5 (receiving port structure), the rigid polyvinyl chloride electric wire that projects into the receiving port 5 so as to incline toward the inner side and the inner side of the receiving port 5 and is inserted into the receiving port. A plurality of locking claws 8 a that lock the tube 1 or the corrugated electric conduit 2 on the outer surface side thereof are arranged along the circumferential direction of the receiving port 5. Further, when the end face of the hard vinyl chloride conduit 1 or the corrugated conduit 2 is in contact with the end of the receiving port 5 beyond the locking claw 8a, the hard vinyl chloride conduit 1 or corrugated conduit 2 of the hard vinyl chloride conduit 1 or more. A restraining portion 5a for restraining insertion is provided. However, in the case of the corrugated conduit 2, considering that the locking claw 8 a enters the recess on the outer surface of the corrugated conduit 2, the end face of the corrugated conduit 2 does not necessarily hit the restraining portion 5 a. is not.

そこで、前記係止爪８ａは、受口５に挿入される硬質塩化ビニル電線管１の移動に伴って受口５の奥方側へと倒れるように傾動することにより、硬質塩化ビニル電線管１の挿入を許容する。反対に、受口５から抜け出ようとする硬質塩化ビニル電線管１に対しては、係止爪８ａは、その硬質塩化ビニル電線管１の外面を係止することにより、その硬質塩化ビニル電線管１の抜け出を規制する（図３−１参照）。また、前記係止爪８ａは、受口５に挿入される波付き電線管２の移動に伴って受口５の奥方側へと倒れるように傾動することにより、波付き電線管２の挿入を許容する。反対に、受口５から抜け出ようとする波付き電線管２に対しては、係止爪８ａは、その波付き電線管２の凹凸が連続する外面を係止することにより、その波付き電線管２の抜け出を規制する（図３−２参照）。 Then, the said latching claw 8a tilts so that it may fall to the back | inner side of the receptacle 5 with the movement of the rigid polyvinyl chloride conduit tube 1 inserted in the receptacle 5, so that the rigid vinyl chloride conduit tube 1 Allow insertion. On the contrary, with respect to the hard polyvinyl chloride conduit 1 that is about to come out from the receiving port 5, the locking claw 8 a locks the outer surface of the rigid polyvinyl chloride conduit 1, so that the rigid polyvinyl chloride conduit is 1 is controlled (see FIG. 3-1). Further, the locking claw 8a tilts so as to fall to the back side of the receiving port 5 with the movement of the wavy conduit tube 2 inserted into the receiving port 5, thereby inserting the wavy conduit tube 2 into the receiving claw 8a. Allow. On the other hand, for the corrugated conduit 2 that is about to escape from the receiving port 5, the locking claw 8 a engages the outer surface where the corrugations of the corrugated conduit 2 are continuous so that the corrugated cable The escape of the tube 2 is restricted (see FIG. 3-2).

ここで、図３−２においては、係止爪８ａは、波付き電線管２の外面における凹部に進入するようにしてその凹部の側面を係止している。そして、この波付き電線管２の凹部の側面を係止する係止爪８ａよりも、硬質塩化ビニル電線管１の外面を係止する係止爪８ａの方が、電線管１、２の軸方向（つまり、受口５の軸方向）に沿うように傾斜している。もっとも、係止爪８ａは、波付き電線管２の外面の凹部に進入するようにしてその凹部の側面を係止しなくとも、凹部に進入することなく凸部の頂面を係止してもよい。 Here, in FIG. 3-2, the locking claw 8 a locks the side surface of the concave portion so as to enter the concave portion on the outer surface of the corrugated conduit 2. And the locking claw 8a which locks the outer surface of the hard vinyl chloride conduit tube 1 is the shaft of the conduit tubes 1 and 2 rather than the locking claw 8a which locks the side surface of the concave portion of the corrugated conduit tube 2. It inclines so that it may follow a direction (namely, axial direction of the receiving port 5). However, the locking claw 8a locks the top surface of the convex portion without entering the concave portion without entering the concave portion so as to enter the concave portion on the outer surface of the corrugated conduit 2 without locking the side surface of the concave portion. Also good.

詳細には、受口５内に係止爪体８が設けられる。そして、その係止爪体８は、受口５の内面に設けられる収容凹部５ｂに配置されて受口５の周方向に延びるリング状またはＣリング状の爪体基部８ｂと、その爪体基部８ｂの内側から延出する複数の前記係止爪８ａ、８ａとからなる。 Specifically, a locking claw body 8 is provided in the receiving port 5. The locking claw body 8 includes a ring-shaped or C-ring-shaped claw body base portion 8b that is disposed in the housing recess 5b provided on the inner surface of the receiving port 5 and extends in the circumferential direction of the receiving port 5, and the claw body base portion. It consists of a plurality of the locking claws 8a, 8a extending from the inside of 8b.

また、受口５は、受口本体６と、その受口本体６とは別体であってその受口本体６に着脱可能に組み付けられる保持体７とを備えている。そして、前記収容凹部５ｂは、受口本体６に設けられて受口５の口元側を向く第１対向面６ａと、保持体７に設けられて受口５の奥側を向き第１対向面６ａと対向する第２対向面７ａとの間に形成される。つまり、受口５は、その軸方向において、収容凹部５ｂ部分で分割されている。 The receiving port 5 includes a receiving body 6 and a holding body 7 that is separate from the receiving body 6 and is detachably assembled to the receiving body 6. And the said accommodation recessed part 5b is provided in the receptacle main body 6, the 1st opposing surface 6a which faces the mouth side of the receptacle 5, and the 1st opposing surface which is provided in the holding body 7 and faces the back | inner side of the receptacle 5 It is formed between 6a and the 2nd opposing surface 7a which opposes. That is, the receiving port 5 is divided at the receiving recess 5b in the axial direction.

具体的には、受口５は、中空の本体４を備えた接続体３に設けられる。つまり、接続体３は、中空の本体４と、その本体４内に通ずる受口５を備える。特に、図示実施の形態においては、接続体３は、電線管連結具３０１（電線管用の継手）からなる。この電線管連結具３０１における本体４は、Ｔ字形状を形成するように延びる筒からなり、その筒の各先端から延出するようにして、前記受口５が設けられる。ここで、本体４と、受口５を構成する前記受口本体６とは、例えば合成樹脂材料により一体に形成される。 Specifically, the receiving port 5 is provided in the connection body 3 including the hollow main body 4. That is, the connection body 3 includes a hollow main body 4 and a receiving port 5 that communicates with the main body 4. In particular, in the illustrated embodiment, the connection body 3 is composed of a conduit coupling tool 301 (a joint for a conduit). The main body 4 in the conduit connector 301 is formed of a tube extending so as to form a T shape, and the receiving port 5 is provided so as to extend from each tip of the tube. Here, the main body 4 and the receiving port body 6 constituting the receiving port 5 are integrally formed of, for example, a synthetic resin material.

受口本体６は、筒状に形成されて、その内側が、硬質塩化ビニル電線管１や波付き電線管２の端部が挿入される、受口本体６側の挿入部６ｂとなる。そして、電線管連結具３０１は、受口本体６側の挿入部６ｂよりも奥側が径小となるように形成されて、その境界の段部が、前記制止部５ａとなる。また、受口本体６の先端面は、前記第１対向面６ａとなる。また、受口本体６側の挿入部６ｂの口元部分（つまり、受口５の内面であって、収容凹部５ｂの奥方）には、硬質塩化ビニル電線管１や波付き電線管２が挿入された際の係止爪８ａの傾動を許容する逃がし凹部６ｃが設けられている。この逃がし凹部６ｃは、係止爪８ａが、硬質塩化ビニル電線管１や波付き電線管２の軸方向（つまり、受口５の軸方向）にほぼ沿うまでに傾いた場合にも、その係止爪８ａを収容可能となるように形成されている。そこで、特に図示実施の形態においては、係止爪８ａは、硬質塩化ビニル電線管１の軸方向にほぼ沿った状態で、その硬質塩化ビニル電線管１の外面を係止する（図３−１参照）。また、受口本体６の外面には、その周に沿って、当接部としての鍔部６ｄが設けられ、その鍔部６ｄと、受口本体６の先端との間には、雄ねじ６ｅが形成されている。 The receptacle body 6 is formed in a cylindrical shape, and the inside thereof is an insertion portion 6b on the receptacle body 6 side into which the end of the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is inserted. And the conduit connector 301 is formed so that the back side is smaller in diameter than the insertion portion 6b on the receiving body 6 side, and the stepped portion at the boundary becomes the restraining portion 5a. Further, the front end surface of the receiving body 6 is the first facing surface 6a. In addition, the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 are inserted into the mouth portion of the insertion portion 6b on the receptacle main body 6 side (that is, the inner surface of the receptacle 5 and behind the housing recess 5b). An escape recess 6c is provided that allows tilting of the locking claw 8a at the time. The relief recess 6c is also provided when the locking claw 8a is inclined to substantially extend along the axial direction of the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 (that is, the axial direction of the receiving port 5). It is formed so that the pawl 8a can be accommodated. Therefore, particularly in the illustrated embodiment, the locking claw 8a locks the outer surface of the rigid polyvinyl chloride conduit 1 in a state substantially along the axial direction of the rigid polyvinyl chloride conduit 1 (FIG. 3-1). reference). Further, a flange portion 6d as a contact portion is provided on the outer surface of the receptacle body 6 along the circumference thereof, and a male screw 6e is provided between the collar portion 6d and the tip of the receptacle body 6. Is formed.

この受口本体６に組み付けられる保持体７は、例えば、合成樹脂材料により形成される。この保持体７は、筒状に形成され、その前端部分（つまり、受口５の口元部分）の内側が、硬質塩化ビニル電線管１や波付き電線管２の端部が挿入される、保持体７側の挿入部７ｂとなる。そして、この保持体７側の挿入部７ｂには、後述するパッキン９が設けられる。また、保持体７は、保持体７側の挿入部７ｂよりも後方側（つまり、受口５の奥側）が、径大となるように形成されて、その境界の段部面が、前記第２対向面７ａとなる。また、保持体７側の挿入部７ｂよりも後方側には、雌ねじ７ｃが形成され、この雌ねじ７ｃが、受口本体６における雄ねじ６ｅと螺合することで、保持体７は、受口本体６に対し、受口５の軸方向に螺進退可能に螺着される。そして、保持体７は、後方側の端部７ｄが、受口本体６の鍔部６ｄに当接することで、受口５の軸方向に対し位置決めされる。 The holding body 7 assembled to the receiving body 6 is made of, for example, a synthetic resin material. The holding body 7 is formed in a cylindrical shape, and the inside of the front end portion (that is, the mouth portion of the receiving port 5) is inserted into the end portion of the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2. It becomes the insertion part 7b on the body 7 side. And the packing 9 mentioned later is provided in the insertion part 7b by the side of this holding body 7. FIG. Further, the holding body 7 is formed so that the rear side (that is, the back side of the receiving port 5) is larger in diameter than the insertion portion 7b on the holding body 7 side, and the stepped surface of the boundary is It becomes the 2nd opposing surface 7a. Further, a female screw 7c is formed on the rear side of the insertion portion 7b on the holding body 7 side, and the female screw 7c is screwed with the male screw 6e in the receiving body 6 so that the holding body 7 is connected to the receiving body. 6 is screwed so as to be able to advance and retract in the axial direction of the receiving port 5. The holding body 7 is positioned with respect to the axial direction of the receiving port 5 by the end 7d on the rear side coming into contact with the flange portion 6d of the receiving port body 6.

また、受口５の内径は、制止部５ａに達する奥端（つまり、受口本体６側の挿入部６ｂの奥端）が最も小径であって、かつ、奥端の内径５ｃが、硬質塩化ビニル電線管１の外径１ａ（好ましくは、寸法誤差を含めた最大外径）と同一またはその外径１ａよりも大となるように形成される。 Further, the inner diameter of the receiving port 5 is the smallest diameter at the back end (that is, the back end of the insertion portion 6b on the receiving port body 6 side) reaching the restraining portion 5a, and the inner diameter 5c at the back end is hard chloride. It is formed so as to be the same as or larger than the outer diameter 1a (preferably the maximum outer diameter including dimensional error) of the vinyl conduit 1.

そして、収容凹部５ｂにおいては、係止爪体８が受口５の径方向に移動可能となるよう、その収容凹部５ｂの幅（つまり、受口５の軸方向における幅）が爪体基部８ｂの厚さよりも大きく形成され、かつ、爪体基部８ｂの外側に遊び空間５ｄを有するように形成される。 And in the accommodation recessed part 5b, the width | variety of the accommodation recessed part 5b (namely, width in the axial direction of the receiving port 5) is the nail body base part 8b so that the latching claw body 8 can move to the radial direction of the receiving port 5. And a play space 5d is formed outside the nail base 8b.

また、受口５には、硬質塩化ビニル電線管１や波付き電線管２との間を密封するパッキン９が設けられる。図示実施の形態においては、パッキン９は、受口５の口元部分（つまり、保持体７の先端部分）の内側に嵌められるようにして配置される。このパッキン９は、Ｖ字状に折り返されるように形成されており、その内側の片が、硬質塩化ビニル電線管１や波付き電線管２の外面を圧接する。 In addition, the receiving port 5 is provided with a packing 9 for sealing between the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2. In the illustrated embodiment, the packing 9 is disposed so as to be fitted inside the mouth portion of the receiving port 5 (that is, the tip portion of the holding body 7). The packing 9 is formed so as to be folded in a V shape, and the inner piece presses the outer surface of the hard vinyl chloride conduit 1 or the corrugated conduit 2.

係止爪体８は、例えば、鋼板とか銅合金板等のバネ性を有する金属板材からなる。この係止爪体８における爪体基部８ｂは、リング状に形成され、特に、図示実施の形態においては、その全周が繋がって形成されている。そして、爪体基部８ｂから延出する係止爪８ａは、複数が、爪体基部８ｂの内側において、周方向に、間隔をあけて均等に並ぶように設けられる。そして、各係止爪８ａは、先端側ほど幅狭となる、台形形状に形成されている。もっとも、複数の係止爪８ａ、８ａは、間隔をあけて並ばなくとも、密接して並んでもよい。また、係止爪８ａは、台形形状に形成されなくとも、先端が尖るように形成されてもよい。 The locking claw body 8 is made of, for example, a metal plate material having spring properties such as a steel plate or a copper alloy plate. The claw base portion 8b of the locking claw body 8 is formed in a ring shape, and in particular, in the illustrated embodiment, the entire circumference is connected. A plurality of locking claws 8a extending from the claw body base portion 8b are provided so as to be evenly arranged at intervals in the circumferential direction inside the claw body base portion 8b. And each latching claw 8a is formed in the trapezoid shape which becomes narrow as the front end side. However, the plurality of locking claws 8a, 8a may be arranged closely without being spaced apart. Further, the locking claw 8a may be formed so as to have a sharp tip without being formed in a trapezoidal shape.

次に、以上の構成からなる受口５の構造（受口構造）の作用効果について説明する。この受口構造によると、受口５には、その受口５の周方向に沿って、係止爪８ａが複数、配置される。ここにおいて、係止爪８ａは、受口５の内方かつ奥方へ向けて傾斜するように突出しており、この係止爪８ａが、受口５に挿入される硬質塩化ビニル電線管１の移動に伴って、受口５の奥方へと倒れるように傾動することで、硬質塩化ビニル電線管１は、その挿入が阻止されることなく、受口５に進入する。そして、硬質塩化ビニル電線管１は、受口５の奥方の制止部５ａに当たることで、その挿入が完了する。反対に、硬質塩化ビニル電線管１の、受口５からの抜け出に対しては、係止爪８ａが硬質塩化ビニル電線管１の外面を係止することで、その抜け出が規制される。 Next, the effect of the structure of the receiving port 5 (receiving port structure) having the above-described configuration will be described. According to this receiving port structure, a plurality of locking claws 8 a are arranged in the receiving port 5 along the circumferential direction of the receiving port 5. Here, the locking claw 8 a protrudes so as to incline toward the inner side and the inner side of the receiving port 5. Accordingly, the hard vinyl chloride conduit tube 1 enters the receiving port 5 without being prevented from being inserted by tilting so as to fall to the back of the receiving port 5. And the insertion of the hard vinyl chloride conduit tube 1 is completed when it hits the stop part 5a at the back of the receiving port 5. On the contrary, when the hard vinyl chloride conduit 1 is pulled out from the receiving port 5, the locking claw 8 a locks the outer surface of the hard polyvinyl chloride conduit 1, so that the pull-out is regulated.

波付き電線管２においても、前記係止爪８ａが、受口５に挿入される波付き電線管２の移動に伴って、受口５の奥方へと倒れるように傾動することで、波付き電線管２は、その挿入が阻止されることなく、受口５に進入する。そして、波付き電線管２は、受口５の奥方の制止部５ａに当たることで、その挿入が完了する。反対に、波付き電線管２の、受口５からの抜け出に対しては、係止爪８ａが波付き電線管２の凹凸が連続する外面を係止することで、その抜け出が規制される。 Also in the corrugated conduit 2, the locking claw 8 a tilts so as to fall to the back of the receptacle 5 with the movement of the corrugated conduit 2 inserted into the receptacle 5. The conduit 2 enters the receiving port 5 without being prevented from being inserted. And the corrugated conduit 2 hits the stop part 5a in the back of the receptacle 5, and the insertion is completed. On the contrary, when the corrugated conduit 2 is pulled out from the receiving port 5, the latching claw 8 a latches the outer surface where the irregularities of the corrugated conduit 2 are continuous, so that the exit is regulated. .

こうして、硬質塩化ビニル電線管１または波付き電線管２は、接着の必要もなく、受口５に接続される。また、こうして、受口５に、硬質塩化ビニル電線管１と波付き電線管２とを選択的に接続することができ、このため、これら硬質塩化ビニル電線管１と波付き電線管２とで、異なる受口構造を備えた電線管連結具３０１（接続体３）を用意する必要がない。すなわち、この電線管用の受口構造によれば、受口５に係止爪８ａを設けることで、電線管１、２を接続するにあたって、接着の必要がなく、また、硬質塩化ビニル電線管１と波付き電線管２とで、異なる受口構造を備えた電線管連結具３０１（接続体３）を用意する必要がなく、配管の施工性を高めることができる。 Thus, the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is connected to the receiving port 5 without the need for adhesion. In addition, in this way, the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 can be selectively connected to the receiving port 5. For this reason, the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 There is no need to prepare a conduit coupler 301 (connector 3) having a different receiving structure. That is, according to the receptacle structure for the conduit, by providing the catch claw 8a in the receptacle 5, there is no need for adhesion when connecting the conduits 1 and 2, and the rigid polyvinyl chloride conduit 1 It is not necessary to prepare a conduit coupling tool 301 (connector 3) having a different receiving structure between the corrugated conduit 2 and the corrugated conduit 2, and the workability of piping can be improved.

また、受口５には、前記係止爪８ａ、８ａが、爪体基部８ｂの内側から延出して形成された、係止爪体８が設けられている。ここで、硬質塩化ビニル電線管１や波付き電線管２を受口５に挿入していくと、硬質塩化ビニル電線管１や波付き電線管２の端面は、係止爪体８の内側から内方かつ奥方へと傾斜するように突出する係止爪８ａ、８ａに当たる。このとき、爪体基部８ｂが配置される収容凹部５ｂは、その幅（つまり、受口５の軸方向における幅）が爪体基部８ｂの厚さよりも大きく、かつ、爪体基部８ｂの外側（つまり、係止爪体８の外側）に遊び空間５ｄを有することから、受口５に挿入された硬質塩化ビニル電線管１の外径１ａや波付き電線管２の外径（特に、凹凸形状における最大外径２ｂ）と係止爪体８の内径との軸心がずれている場合であっても、その軸心が合うように係止爪体８が移動する。これにより、硬質塩化ビニル電線管１や波付き電線管２が挿入される受口５および係止爪体８の寸法精度を、それほど高くしなくとも、硬質塩化ビニル電線管１や波付き電線管２と係止爪体８との軸心を合わせることができ、硬質塩化ビニル電線管１や波付き電線管２に対して、複数の係止爪８ａ、８ａを均等に係止させることができる。また、これによって、係止爪８ａ、８ａに過剰な力がかかることを抑えることができ、この電線管連結具３０１を長く使うことができる。 The receiving mouth 5 is provided with a locking claw body 8 in which the locking claws 8a, 8a are formed extending from the inside of the claw body base portion 8b. Here, when the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 are inserted into the receiving port 5, the end surfaces of the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 are from the inside of the locking claws 8. It hits the locking claws 8a and 8a that protrude so as to incline inward and backward. At this time, the accommodating recess 5b in which the nail body base portion 8b is arranged has a width (that is, a width in the axial direction of the receiving port 5) larger than the thickness of the nail body base portion 8b and the outside of the nail body base portion 8b ( That is, since the play space 5d is provided on the outer side of the latching claw body 8), the outer diameter 1a of the hard polyvinyl chloride conduit 1 inserted into the receiving port 5 and the outer diameter (particularly uneven shape) of the corrugated conduit 2. Even when the axial center between the maximum outer diameter 2b) and the inner diameter of the locking claw body 8 is deviated, the locking claw body 8 moves so that the axial center is aligned. Thereby, the rigid polyvinyl chloride conduit 1 and the corrugated conduit can be obtained without increasing the dimensional accuracy of the receptacle 5 and the locking claw body 8 into which the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 are inserted. 2 and the locking claw body 8 can be aligned with each other, and the plurality of locking claws 8a, 8a can be evenly locked to the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2. . Moreover, it can suppress that excessive force is applied to the latching claws 8a and 8a by this, and this conduit connector 301 can be used for a long time.

また、受口５の内径は、制止部５ａに達する奥端が最も小径であって、かつ、その奥端の内径５ｃが、硬質塩化ビニル電線管１の外径１ａと同一またはその外径１ａよりも大となるよう形成されている。これは、硬質塩化ビニル電線管１を受口５に接着により接続する場合には、硬質塩化ビニル電線管１と受口５の内面との密着性を高める必要があることから、受口５の奥側で圧入気味となるように受口５の内径の寸法を設定する必要があるのに対して、この係止爪８ａを用いた接続においては、その必要がないことによる。そして、このように、受口５の内径を設定することで、硬質塩化ビニル電線管１を受口５に、大きな力を要せず、かつ、確実に挿入することができ、その硬質塩化ビニル電線管１を、受口５に簡単に接続することができる。 Further, the inner diameter of the receiving port 5 is the smallest at the far end reaching the restraining portion 5a, and the inner diameter 5c at the far end is the same as the outer diameter 1a of the rigid polyvinyl chloride conduit 1, or its outer diameter 1a. It is formed so as to be larger than. This is because, when the rigid polyvinyl chloride conduit 1 is connected to the receptacle 5 by adhesion, it is necessary to improve the adhesion between the rigid polyvinyl chloride conduit 1 and the inner surface of the receptacle 5, so This is because the size of the inner diameter of the receiving port 5 needs to be set so as to make a press fit on the back side, but this is not necessary in the connection using the locking claw 8a. And by setting the inner diameter of the receiving port 5 in this way, the hard vinyl chloride conduit tube 1 can be securely inserted into the receiving port 5 without requiring a large force. The conduit 1 can be easily connected to the receiving port 5.

また、受口５が、保持体７を備えることで、収容凹部５ｂの形成が容易となり、また、受口本体６に保持体７を組み付ける際に、受口本体６（詳しくは、第１対向面６ａ）と保持体７（詳しくは、第２対向面７ａ）との間に係止爪体８の爪体基部８ｂを差し入れるようにすれば、この係止爪体８を収容凹部５ｂ部分に簡単に配置することができる。そして、硬質塩化ビニル電線管１または波付き電線管２が接続されている受口５に対し、受口本体６から保持体７を外すことで、硬質塩化ビニル電線管１または波付き電線管２を、係止爪体８が付いた状態で、受口本体６から取り出すことができる。そこで、硬質塩化ビニル電線管１や波付き電線管２の、係止爪体８が付いた端部部分を切除することで、残りの部分を再利用することができ、また、電線管連結具３０１においても、係止爪体８を除き、再利用することができる。もっとも、係止爪体８においても、その係止爪体８を、硬質塩化ビニル電線管１や波付き電線管２の端部部分から、切断側に抜き取ることができ、抜き取った係止爪体８に破損がなければ、その係止爪体８を再利用することができる。 In addition, since the receiving port 5 includes the holding body 7, it is easy to form the housing recess 5 b, and when the holding body 7 is assembled to the receiving port body 6, the receiving port body 6 (specifically, the first opposing surface). If the nail body base portion 8b of the latching claw body 8 is inserted between the surface 6a) and the holding body 7 (specifically, the second opposing surface 7a), the latching claw body 8 is part of the housing recess 5b. Can be easily arranged. And the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is removed by removing the holding body 7 from the receptacle main body 6 with respect to the receptacle 5 to which the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is connected. Can be taken out from the receiving body 6 with the locking claw body 8 attached. Therefore, by cutting off the end portion of the rigid polyvinyl chloride conduit tube 1 and the corrugated conduit tube 2 with the locking claws 8, the remaining portion can be reused, and the conduit connector Also in 301, the latching claw body 8 can be removed and reused. Of course, also in the latching claw body 8, the latching claw body 8 can be extracted to the cutting side from the end portions of the hard vinyl chloride conduit tube 1 and the corrugated conduit tube 2, and the latching claw body thus removed is removed. If the 8 is not damaged, the locking claw body 8 can be reused.

また、硬質塩化ビニル電線管１の外径１ａは、波付き電線管２の凹凸形状における最小外径２ａより大きいが、それに加えて、硬質塩化ビニル電線管１の外径１ａは、波付き電線管２の凹凸形状における最大外径２ｂと同一またはそれより小さいのが好ましい。すなわち、硬質塩化ビニル電線管１は、その外径１ａが、波付き電線管２の凹凸形状における最小外径２ａを越え最大外径２ｂ以下となる範囲にあるのが好ましい。こうして、硬質塩化ビニル電線管１の外径１ａを、波付き電線管２に対して所要の範囲とすることで、係止爪８ａを、硬質塩化ビニル電線管１と波付き電線管２とに無理なく係止させることができる。ここで、図示実施の形態においては、硬質塩化ビニル電線管１の外径１ａは、波付き電線管２の凹凸形状における最大外径２ｂと同一となっている。 Further, the outer diameter 1a of the rigid polyvinyl chloride conduit 1 is larger than the minimum outer diameter 2a in the concavo-convex shape of the corrugated conduit 2, but in addition, the outer diameter 1a of the rigid polyvinyl chloride conduit 1 is corrugated. It is preferable that it is equal to or smaller than the maximum outer diameter 2b in the uneven shape of the tube 2. That is, it is preferable that the outer diameter 1a of the rigid polyvinyl chloride conduit 1 is in a range that exceeds the minimum outer diameter 2a in the concavo-convex shape of the corrugated conduit 2 and is equal to or less than the maximum outer diameter 2b. Thus, by setting the outer diameter 1a of the rigid polyvinyl chloride conduit 1 to a required range with respect to the corrugated conduit 2, the locking claw 8a can be changed into the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2. It can be locked without difficulty. Here, in the illustrated embodiment, the outer diameter 1 a of the rigid polyvinyl chloride conduit 1 is the same as the maximum outer diameter 2 b in the concavo-convex shape of the corrugated conduit 2.

なお、本発明は、上述した実施の形態に限定されるわけではなく、その他種々の変更が可能である。例えば、接続体３は、電線管連結具３０１でなくとも、図６に示すように、配線ボックス３０２であってもよい。ここにおいて、配線ボックス３０２は、底壁４ａとその底壁４ａから立設する周壁４ｂとを有して、内部の空間４ｃに導かれた電線が結線または分岐されあるいは配線器具に接続される、本体４と、その本体４内に通ずる受口５とを備えている。そして、前述したように、受口５に、内外面が平滑な硬質塩化ビニル電線管１あるいは波付き電線管２の端部が挿入されて接続される。 In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the connection body 3 may be a wiring box 302 as shown in FIG. Here, the wiring box 302 has a bottom wall 4a and a peripheral wall 4b erected from the bottom wall 4a, and an electric wire led to the internal space 4c is connected or branched or connected to a wiring device. A main body 4 and a receiving port 5 communicating with the main body 4 are provided. As described above, the end portion of the hard vinyl chloride conduit 1 or the corrugated conduit 2 having a smooth inner and outer surface is inserted into and connected to the receptacle 5.

また、接続体３は、図７に示すように、電線管端末キャップ３０３であってもよい。この電線管端末キャップ３０３は、エントランスキャップとかターミナルキャップとか呼ばれるたぐいのものである。この電線管端末キャップ３０３は、電線を屈曲配線する内部空間４ｄを有するとともに、その内部空間４ｄから電線を引き出す引出口４ｅを１つまたは複数備えた、本体４と、その本体４内に通ずる受口５とを備えている。そして、前述したように、受口５に、内外面が平滑な硬質塩化ビニル電線管１あるいは波付き電線管２の端部が挿入されて接続される。 Moreover, the connection body 3 may be a conduit end cap 303 as shown in FIG. The conduit end cap 303 is a type called an entrance cap or a terminal cap. The conduit end cap 303 has an inner space 4d for bending and wiring the electric wire, and has one or more outlets 4e for drawing out the electric wires from the inner space 4d, and a receptacle that communicates with the main body 4. It has a mouth 5. As described above, the end portion of the hard vinyl chloride conduit 1 or the corrugated conduit 2 having a smooth inner and outer surface is inserted into and connected to the receptacle 5.

また、接続体３は、図８に示すように、電線管連結具３０１としての屈曲配線経路形成具３０４であってもよい。この屈曲配線経路形成具３０４は、ノーマルベンドと呼ばれるたぐいのものであり、中空筒状の本体４と、その本体４の両端に設けられてその本体４内に通ずる受口５とを備えている。そして、受口５の開口方向が互いに直角となるように本体４が硬質合成樹脂により湾曲状態を維持して形成される。そして、前述したように、受口５に、内外面が平滑な硬質塩化ビニル電線管１あるいは波付き電線管２の端部が挿入されて接続される。 Moreover, the connection body 3 may be a bent wiring path forming tool 304 as a conduit coupling tool 301 as shown in FIG. The bent wiring path forming tool 304 is a so-called normal bend, and includes a hollow cylindrical main body 4 and receiving ports 5 provided at both ends of the main body 4 and leading into the main body 4. . Then, the main body 4 is formed of a hard synthetic resin while maintaining a curved state so that the opening directions of the receiving ports 5 are perpendicular to each other. As described above, the end portion of the hard vinyl chloride conduit 1 or the corrugated conduit 2 having a smooth inner and outer surface is inserted into and connected to the receptacle 5.

また、接続体３は、電線管連結具３０１とか配線ボックス３０２とか電線管端末キャップ３０３とか屈曲配線経路形成具３０４とかに限るものではなく、内外面が平滑な硬質塩化ビニル電線管１や波付き電線管２が接続される受口５を備えるものであれば、どのようなものでもよい。 The connecting body 3 is not limited to the conduit connector 301, the wiring box 302, the conduit terminal cap 303, or the bent wiring path forming tool 304, and the rigid polyvinyl chloride conduit tube 1 having a smooth inner and outer surface or corrugated. Any device may be used as long as it has a receiving port 5 to which the conduit 2 is connected.

また、係止爪体８における爪体基部８ｂは、その全周が繋がって形成されなくとも、その周方向の一部が分断されて（図９参照）、その分断部分８ｃを広げるように爪体基部８ｂを強制的に変形させることで係止爪８ａを硬質塩化ビニル電線管１や波付き電線管２から離して係止爪体８を硬質塩化ビニル電線管１や波付き電線管２から取り外し可能となってもよい。これにより、硬質塩化ビニル電線管１あるいは波付き電線管２が接続されている受口５に対し、受口本体６から保持体７を外し、硬質塩化ビニル電線管１あるいは波付き電線管２を、係止爪体８が付いた状態で、受口本体６から取り出し、さらに、爪体基部８ｂの分断部分８ｃを広げて、係止爪８ａを硬質塩化ビニル電線管１あるいは波付き電線管２から離して係止爪体８を硬質塩化ビニル電線管１あるいは波付き電線管２から取り外すことができる。このため、この硬質塩化ビニル電線管１や波付き電線管２を、端部部分を切断することなく、再利用することができ、また、接続体３においても、係止爪体８を除き、再利用することができる。もっとも、係止爪体８においても、破損がなければ再利用することができる。なお、爪体基部８ｂの分断部分８ｃは、図９においては、その分断部分８ｃの各端が互いに離れることで、爪体基部８ｂがＣリング状となっているが、分断部分８ｃの各端が互いに接触して形成されてもよい。また、この図９においては、分断部分８ｃの各端が僅かに離れているが（すなわち、分断部分８ｃがスリット８ｄによって形成されているが）、分断部分８ｃの各端が大きく離れていても構わない。 Further, the claw body base portion 8b in the locking claw body 8 is not formed by connecting all the circumferences thereof, but a part of the circumferential direction is divided (see FIG. 9), and the claw body 8b is widened. By forcibly deforming the body base 8b, the locking claw 8a is separated from the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2, and the locking claw body 8 is separated from the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2. It may be removable. Accordingly, the holder 7 is removed from the receiving body 6 with respect to the receiving port 5 to which the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is connected, and the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is removed. In the state where the latching claw body 8 is attached, it is taken out from the receptacle body 6, and further, the divided portion 8c of the claw body base portion 8b is widened, and the latching claw 8a is connected to the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2. The latching claw body 8 can be detached from the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 apart from the above. For this reason, the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 can be reused without cutting the end portion, and the connecting body 3 also excludes the locking claws 8, Can be reused. However, the locking claw body 8 can be reused if it is not damaged. In FIG. 9, the divided portion 8c of the nail body base 8b has a C-ring shape because the ends of the divided portion 8c are separated from each other. However, each end of the divided portion 8c May be formed in contact with each other. Further, in FIG. 9, each end of the divided portion 8c is slightly separated (that is, the divided portion 8c is formed by the slit 8d), but each end of the divided portion 8c is greatly separated. I do not care.

また、図１０に示すように、受口５には、その受口５の内面と、挿入された硬質塩化ビニル電線管１や波付き電線管２の外面との間に、硬質塩化ビニル電線管１や波付き電線管２を係止している係止爪８ａを押して受口５の奥方に傾動させるための係止解除部材１０を差込み可能な、差込み空間５ｅが設けられてもよい（図は、硬質塩化ビニル電線管１を例として示す。）。こうして、硬質塩化ビニル電線管１あるいは波付き電線管２が接続された受口５に対し、係止解除部材１０を、差込み空間５ｅに差し込んで、受口５の奥方へと進めることで、その係止解除部材１０で、係止爪８ａを押して受口５の奥方へ傾動させることができ、これによって、硬質塩化ビニル電線管１や波付き電線管２への係止爪８ａの係止を解除することができる。したがって、この係止解除部材１０を受口５の奥方へと進めた状態で、硬質塩化ビニル電線管１あるいは波付き電線管２を引けば、その硬質塩化ビニル電線管１あるいは波付き電線管２を受口５から取り出すことができる。図示実施の形態においては、係止解除部材１０は、筒状に形成されて、予め、差込み空間５ｅに差し込まれている。そこで、受口５の口元から外部に突出する係止解除部材１０の端部１０ａを押し込むことで、この係止解除部材１０は、受口５の奥方へと進み、その係止解除部材１０の進む側の端部１０ｂ（つまり、奥側の端部）が、係止爪８ａを押して、その係止爪８ａの硬質塩化ビニル電線管１あるいは波付き電線管２への係止を解除する。もっとも、係止解除部材１０は、予め、受口５の差込み空間５ｅに差し込まれていなくとも、係止を解除する際に、差込み空間５ｅに差し込まれてもよい。また、係止解除部材１０は、予め差込み空間５ｅに埋設された解除部材本体と、その解除部材本体を受口５の奥方へと押し進める、解除部材本体とは別体の解除具とから構成されてもよい。 Further, as shown in FIG. 10, the receiving port 5 includes a hard polyvinyl chloride conduit between the inner surface of the receiving port 5 and the outer surface of the inserted rigid polyvinyl chloride conduit 1 or corrugated conduit 2. An insertion space 5e may be provided in which a locking release member 10 for pushing the locking claw 8a locking the 1 or the corrugated conduit 2 and tilting it toward the back of the receiving port 5 can be inserted (see FIG. Shows a hard vinyl chloride conduit 1 as an example). In this way, by inserting the locking release member 10 into the insertion space 5e with respect to the receiving port 5 to which the rigid polyvinyl chloride conduit tube 1 or the corrugated conduit tube 2 is connected, With the unlocking member 10, the locking claw 8 a can be pushed and tilted to the back of the receiving port 5, thereby locking the locking claw 8 a to the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2. It can be canceled. Therefore, if the hard vinyl chloride conduit 1 or the corrugated conduit 2 is pulled in a state where the locking release member 10 is advanced to the back of the receiving port 5, the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is drawn. Can be taken out from the receiving port 5. In the illustrated embodiment, the lock release member 10 is formed in a cylindrical shape and is inserted in the insertion space 5e in advance. Therefore, by pushing the end portion 10a of the unlocking member 10 protruding outward from the mouth of the receiving port 5, the unlocking member 10 advances to the back of the receiving port 5, and the locking releasing member 10 The advancing end portion 10b (that is, the back end portion) pushes the locking claw 8a to release the locking claw 8a from being locked to the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2. However, even if the locking release member 10 is not inserted into the insertion space 5e of the receiving port 5 in advance, it may be inserted into the insertion space 5e when releasing the locking. Further, the locking release member 10 includes a release member main body embedded in the insertion space 5e in advance, and a release tool separate from the release member main body that pushes the release member main body toward the back of the receiving port 5. May be.

また、保持体７は、受口本体６に対し、受口５の軸方向に螺進退可能に螺着されるが、この保持体７を受口５の奥方へ螺進させることにより、受口本体６の第１対向面６ａと保持体７の第２対向面７ａとで爪体基部８ｂを挟持可能としてもよい。上述した一実施の形態においては、受口本体６に設けられる鍔部６ｄを控えて位置させることで、受口本体６と保持体７とで（詳しくは、第１対向面６ａと第２対向面７ａとで）、爪体基部８ｂを挟持可能とすることができる。これにより、硬質塩化ビニル電線管１あるいは波付き電線管２を受口５に挿入した後に、保持体７を受口５の奥方へ螺進させるようにして締め付けて、爪体基部８ｂを挟持することで、硬質塩化ビニル電線管１や波付き電線管２をがたつき無く受口５に接続することができる。ここにおいて、係止爪体８が受口５の径方向に移動可能となる、爪体基部８ｂが挟持される手前の位置で、受口本体６に対する保持体７の螺進が、一旦止まるように、受口本体６と保持体７との間に、節度を付与する節度手段を設けるのが好ましい。この節度手段としては、受口本体６の鍔部６ｄと保持体７の後方側の端部７ｄとの間に、スプリングワッシャとかパッキン等の弾性部材を介在させたり、爪体基部８ｂが挟持される手前の位置から、受口本体６に対して保持体７が圧入されるような構造を設けたりすることが考えられる。 In addition, the holding body 7 is screwed to the receiving body 6 so as to be able to be screwed back and forth in the axial direction of the receiving opening 5. The nail body base 8b may be clamped between the first facing surface 6a of the main body 6 and the second facing surface 7a of the holding body 7. In the above-described embodiment, the hook body 6d provided on the receiving body 6 is positioned so as to be positioned between the receiving body 6 and the holding body 7 (specifically, the first facing surface 6a and the second facing surface). The nail base 8b can be clamped with the surface 7a. Thus, after inserting the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 into the receptacle 5, the holder 7 is tightened so as to be screwed into the interior of the receptacle 5 to clamp the nail base 8b. Thus, the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 can be connected to the receiving port 5 without rattling. Here, the screwing of the holding body 7 with respect to the receiving body 6 temporarily stops at a position just before the nail body base 8b is sandwiched so that the locking claw body 8 can move in the radial direction of the receiving hole 5. Further, it is preferable that a moderation means for providing moderation is provided between the receiving body 6 and the holding body 7. As the moderation means, an elastic member such as a spring washer or packing is interposed between the flange portion 6d of the receiving body 6 and the rear end portion 7d of the holding body 7, or a claw body base portion 8b is sandwiched. It is conceivable to provide a structure in which the holding body 7 is press-fitted into the receiving body 6 from a position before the front.

また、収容凹部５ｂは、爪体基部８ｂがその内周側ほど受口５の奥方へ変位するようにたわみ変形可能となるよう、その収容凹部５ｂの幅が爪体基部８ｂの厚さよりも大きく形成されてもよい。ここで、前述した一実施の形態においては、係止爪体８が受口５の径方向に移動可能となればよいが、ここにおいては、爪体基部８ｂがその内周側ほど受口５の奥方へ変位するようにたわみ変形可能となる程度まで、収容凹部５ｂの幅が爪体基部８ｂの厚さよりも大きく形成される必要がある。もっとも、爪体基部８ｂがその内周側ほど受口５の奥方へ変位するようにたわみ変形可能となる限りにおいて、爪体基部８ｂの外縁と対応する部分の収容凹部５ｂの幅は、その外縁を挟持するまで小さく形成されても構わない。この構成により、硬質塩化ビニル電線管１あるいは波付き電線管２を受口５に挿入し、その硬質塩化ビニル電線管１あるいは波付き電線管２が係止爪８ａを押すと、爪体基部８ｂは、その内周側ほど受口５の奥方へ変位するようにたわむ。こうして、爪体基部８ｂがたわむことから、受口５に挿入される硬質塩化ビニル電線管１あるいは波付き電線管２の移動に伴って、係止爪８ａは、容易に受口の奥方へと傾動し、これによって、硬質塩化ビニル電線管１や波付き電線管２を、受口５に、容易に挿入することができる。 The accommodating recess 5b has a width larger than the thickness of the nail body base 8b so that the nail body base 8b can be flexibly deformed so that the nail body base 8b is displaced toward the inner side of the receiving port 5. It may be formed. Here, in the above-described embodiment, it is only necessary that the locking claw body 8 is movable in the radial direction of the receiving port 5, but here, the claw body base portion 8 b is closer to the inner peripheral side thereof. The width of the housing recess 5b needs to be larger than the thickness of the nail base 8b to the extent that it can be flexibly deformed so as to be displaced inward. However, as long as the nail body base 8b can be flexibly deformed so that the inner circumference side is displaced toward the back of the receiving port 5, the width of the housing recess 5b corresponding to the outer edge of the nail body base 8b is the outer edge thereof. It may be formed small until it is sandwiched. With this configuration, when the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 is inserted into the receiving port 5 and the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 presses the locking claw 8a, the nail body base 8b Is bent so that the inner peripheral side is displaced toward the back of the receiving port 5. Since the claw body base portion 8b bends in this way, the locking claw 8a can be easily moved to the back of the receptacle as the rigid polyvinyl chloride conduit 1 or the corrugated conduit 2 inserted into the receptacle 5 moves. By tilting, the rigid polyvinyl chloride conduit 1 and the corrugated conduit 2 can be easily inserted into the receptacle 5.

また、保持体７は、受口本体６に対し、螺着されなくとも、例えば、受口本体６を、係止爪体８を内部に収めるまで延出し、その受口本体６内に保持体７を挿入し、受口５の軸方向と直交する方向において受口本体６を貫通するようなピンを着脱可能に設けて、そのピンで保持体７を抜け止めするようにしてもよい。 Even if the holding body 7 is not screwed to the receiving body 6, for example, the receiving body 6 is extended until the locking claw body 8 is accommodated therein, and the holding body is placed in the receiving body 6. 7 may be inserted, and a pin that penetrates the receptacle body 6 in a direction orthogonal to the axial direction of the receptacle 5 may be detachably provided, and the holding body 7 may be prevented from coming off with the pin.

また、本体４と受口本体６とは、一体に形成されなくとも（つまり、一部品からならなくとも）、別体に形成されて、それら本体４と受口本体６とが、例えば接着により一体化されてもよい。 Further, the main body 4 and the receiving body 6 are not formed integrally (that is, not formed of one component), but are formed separately, and the main body 4 and the receiving body 6 are bonded to each other by, for example, bonding. It may be integrated.

また、受口５は、受口本体６と保持体７とで構成されるように、その軸方向において分割されなくとも、その径方向おいて分割、例えば半割りにされて、それらが組み付けられるものであってもよい。また、この径方向における分割は、受口５のみであっても、本体４を含めて分割されてもよい。 Further, the receptacle 5 is constituted by the receptacle body 6 and the holding body 7, but is not divided in the axial direction, but is divided in the radial direction, for example, divided in half, and they are assembled. It may be a thing. Further, the division in the radial direction may be performed only on the receiving port 5 or on the main body 4.

また、受口５は、受口本体６と保持体７とで構成されなくとも、一体に形成されていてもよい。ここで、収容凹部５ｂ部分への係止爪体８の配置は、例えば、係止爪体８（爪体基部８ｂ）をＣリング状とし、その係止爪体８を、Ｃリング形状の両端を近づけるように縮径させて受口５内に挿入し、収容凹部５ｂ部分で、その縮径した係止爪体８を元に戻すようにしてもよい。 Further, the receiving port 5 may not be formed by the receiving body 6 and the holding body 7 but may be integrally formed. Here, the arrangement of the latching claw body 8 in the housing recess 5b portion is, for example, that the latching claw body 8 (claw body base 8b) has a C-ring shape, and the latching claw body 8 has both ends of the C-ring shape. The diameter of the engaging claw body 8 having the reduced diameter may be returned to the original position at the receiving recess 5b.

また、収容凹部５ｂは、その幅が爪体基部８ｂの厚さよりも大きく形成されたり、爪体基部８ｂの外側に遊び空間５ｄを有するように形成されたりしているが、爪体基部８ｂが収容凹部５ｂに密着して配置されてもよい。そして、この場合には、複数の係止爪８ａ、８ａが、爪体基部８ｂを介して一体となっていなくとも、個々の係止爪８ａ、８ａがばらばらとなるよう爪体基部８ｂが分割されてもよい。 The accommodating recess 5b is formed to have a width larger than the thickness of the nail base 8b or to have a play space 5d outside the nail base 8b. You may arrange | position closely_contact | adhere to the accommodation recessed part 5b. In this case, the claw body base 8b is divided so that the individual claw 8a and 8a are separated even if the plurality of locking claws 8a and 8a are not integrated via the claw body base 8b. May be.

また、受口５の内面には、係止爪８ａの傾動する側に、その係止爪８ａに当接して、係止爪８ａの傾動を所定の範囲に制限する、傾動規制部が設けられてもよい。 In addition, on the inner surface of the receiving port 5, a tilt restricting portion is provided on the tilting side of the locking claw 8 a so as to abut against the locking claw 8 a and limit the tilting of the locking claw 8 a to a predetermined range. May be.

また、受口５には、パッキン９が、係止爪８ａよりも手前に設けられるが、このパッキン９は、係止爪８ａよりも奥側に設けられてもよい。また、このパッキン９は、設けられなくともよい。 Moreover, although the packing 9 is provided in the near side rather than the latching claw 8a in this receptacle 5, this packing 9 may be provided in the back | inner side rather than the latching claw 8a. Further, the packing 9 may not be provided.

また、波付き電線管２の凹凸は、リング状に形成されるものであっても、螺旋状に形成されるものであってもよい。また、硬質塩化ビニル電線管１の外径と、波付き電線管２の凹凸形状における最大外径（つまり、凸部の頂面の外径）とは、電線管のがたつき防止のためには、その差が１ｍｍ以内であるのが望ましい。 Moreover, the unevenness | corrugation of the corrugated conduit 2 may be formed in a ring shape, or may be formed in a spiral shape. The outer diameter of the rigid polyvinyl chloride conduit 1 and the maximum outer diameter of the corrugated shape of the corrugated conduit 2 (that is, the outer diameter of the top surface of the convex portion) are for preventing the rattling of the conduit. The difference is preferably within 1 mm.

また、この接続体３は、合成樹脂製、特に、難燃性あるいは自己消化性を有する合成樹脂（例えば、硬質塩化ビニル）製の電線管付属品であるが、必ずしも合成樹脂製に限定されるものではない。 The connecting body 3 is a conduit accessory made of a synthetic resin, in particular, a flame retardant or self-digestible synthetic resin (for example, hard vinyl chloride), but is not necessarily limited to a synthetic resin. It is not a thing.

また、接続体３における本体４、つまり制止部５ａよりも奥方には、電線が通過したかを視認可能に形成された（つまり、透明な、半透明な、あるいは光が透過して電線の影が見える程度に透ける）視認部が設けられてもよい。 Further, in the back of the main body 4 in the connection body 3, that is, the restraining portion 5a, it is formed so as to be able to visually recognize whether the electric wire has passed (that is, transparent, translucent, or light is transmitted through and the shadow of the electric wire is transmitted). A visual recognition part may be provided which is transparent to the extent that can be seen.

また、受口５への硬質塩化ビニル電線管１の接続強度は、３０〜４０秒の間に５００〜５１０Ｎの値になるように連続的に増加する引張荷重を加えた後、２分±１０秒後に荷重を取り去った際に接続状態に異常無きように、少なくとも５００Ｎの引き抜きに耐える（つまり、手では容易に引き抜けない）接続強度（係止強度）を有するのがよい。すなわち、受口５への硬質塩化ビニル電線管１の接続強度は、軸方向の荷重（引張荷重）に対して、少なくとも５００Ｎに耐える（つまり、手では容易に引き抜けない）係止力を備えることが望ましい。 Further, the connection strength of the rigid polyvinyl chloride conduit 1 to the receiving port 5 is 2 minutes ± 10 after applying a tensile load that continuously increases so as to become a value of 500 to 510 N in 30 to 40 seconds. It should have a connection strength (locking strength) that can withstand at least 500 N pull-out (that is, it cannot be pulled out easily by hand) so that the connection state does not become abnormal when the load is removed after 2 seconds. That is, the connection strength of the rigid polyvinyl chloride conduit 1 to the receiving port 5 has a locking force that can withstand at least 500 N against an axial load (tensile load) (that is, it cannot be easily pulled out by hand). It is desirable.

また、軸方向の荷重（引張荷重）に対して、少なくとも５００Ｎに耐える（つまり、手では容易に引き抜けない）係止力を備えるとともに、引き抜き方向に荷重（引張荷重）をかけながら周方向に硬質塩化ビニル電線管１を回動させることで引き抜くことができる（詳しくは、硬質塩化ビニル電線管１の外面に係止爪８ａによる螺旋タップが形成されるようにして引き抜くことができる）ような、係止状態としてもよい。もっとも、軸方向の荷重（引張荷重）に対して、少なくとも５００Ｎに耐える（つまり、手では容易に引き抜けない）係止力を備えるとともに、引き抜き方向に荷重（引張荷重）をかけながら周方向に硬質塩化ビニル電線管１を回動させたときに、係止爪８ａにより硬質塩化ビニル電線管１の外面の材料が掻き集められることによりフランジ部１ｂが形成されてその外面のフランジ部１ｂにより引き抜きが阻止されるような（図１１参照）、係止状態としてもよい。 In addition, it has a locking force that can withstand at least 500 N against an axial load (tensile load) (that is, it cannot be pulled out easily by hand) and in the circumferential direction while applying a load (tensile load) in the pull-out direction. It can be pulled out by rotating the hard vinyl chloride conduit 1 (specifically, it can be pulled out so that a spiral tap is formed by the locking claw 8a on the outer surface of the rigid polyvinyl chloride conduit 1). It is good also as a locked state. However, it has a locking force that can withstand at least 500 N against an axial load (tensile load) (that is, it cannot be pulled out easily by hand) and in the circumferential direction while applying a load (tensile load) in the pull-out direction. When the rigid polyvinyl chloride conduit 1 is rotated, the outer clad 8a scrapes the material of the outer surface of the rigid polyvinyl chloride conduit 1 to form the flange portion 1b, and the outer flange portion 1b pulls out the flange portion 1b. It is good also as a locked state which is blocked | prevented (refer FIG. 11).

１硬質塩化ビニル電線管
１ａ外径
２波付き電線管
２ａ最小外径
２ｂ最大外径
５受口
８ａ係止爪
９パッキン 1 Hard Vinyl Chloride Conduit 1a Outer Diameter 2 Corrugated Conduit 2a Minimum Outer Diameter 2b Maximum Outer Diameter 5 Receiving Port 8a Locking Claw 9 Packing

Claims

A corrugated conduit tube made of a synthetic resin that is provided with irregularities continuously along the axial direction on the outer surface and has an outer diameter larger than the minimum outer diameter of the corrugated shape of the corrugated conduit tube, A rigid polyvinyl chloride conduit with a smooth inner and outer surface is a structure of a receptacle that is selectively connected,
A plurality of the receptacles, which protrudes so as to incline toward the inside and the back of the receptacle and are inserted into the receptacle, to lock the hard vinyl chloride conduit or corrugated conduit on the outer surface side. Are arranged along the circumferential direction of the receptacle,
The locking claw allows the insertion of the rigid polyvinyl chloride conduit tube by tilting so as to fall to the back side of the receptacle with the movement of the rigid polyvinyl chloride conduit tube inserted into the receptacle. At the same time, for the rigid polyvinyl chloride conduit that tries to come out of the receptacle, the outer surface of the rigid polyvinyl chloride conduit is locked to regulate the exit of the rigid polyvinyl chloride conduit, ,
The locking claw allows the insertion of the corrugated conduit by tilting so that the corrugated conduit inserted into the receptacle tilts to the back side of the receptacle with the movement of the corrugated conduit. In addition, for the corrugated conduit that is about to escape from the receptacle, by locking the outer surface where the corrugation of the corrugated conduit continues, the escape of the corrugated conduit is regulated,
The receptacle is provided with a packing that seals between the rigid polyvinyl chloride conduit and the corrugated conduit, and the packing is positioned in front of the locking claw. And
With the locking claw entering the recess on the outer surface of the corrugated conduit tube and locking the side surface of the recess, the packing is on the top surface of the convex portion on the outer surface of the corrugated conduit tube. A receptacle structure for a conduit tube, which abuts .

The outer diameter of the rigid polyvinyl chloride conduit is larger than the minimum outer diameter of the corrugated conduit and is equal to or smaller than the maximum outer diameter of the corrugated shape of the corrugated conduit. The receptacle structure for a conduit according to claim 1.