JP2019211063A

JP2019211063A - Clamp member and electric fusion joint with clamp member

Info

Publication number: JP2019211063A
Application number: JP2018219628A
Authority: JP
Inventors: 水川　賢司; Kenji Mizukawa; 賢司水川; 剛史鈴木; Takashi Suzuki
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 2017-12-27
Filing date: 2018-11-22
Publication date: 2019-12-12
Anticipated expiration: 2038-11-22
Also published as: JP7201409B2

Abstract

To provide a clamp member that is constituted at low cost and enables construction work to efficiently connect a resin pipe to an electric fusion joint at a plurality of places while saving costs.SOLUTION: The present invention relates to a resin-made clamp member 1 which fixes a resin pipe 100 made of thermoplastic resin and an electric fusion joint 2 to which the resin pipe 100 is connected by heat sealing. The clamp member comprises: a fastening belt part 10 which is reducible in diameter so as to hold the resin pipe 100 with the resin pipe 100 inserted inside; a pair of engagement parts which engage each other in a circumferential direction around a center axis O of the electric fusion joint 2 so as to maintain the diameter reduced state of the fastening belt part 10; and a holding part 12 which is coupled to the fastening belt part 10 to hold a power supply terminal 22 of the electric fusion joint 2, and the pair of engagement parts have engagement teeth formed individually which allow relative displacement in a direction of diameter decrease of the fastening belt part 10 and also restrict relative displacement in a direction of diameter increase of the fastening belt part 10.SELECTED DRAWING: Figure 1

Description

本発明は、クランプ部材、およびクランプ部材付き電気融着継手に関する。 The present invention relates to a clamp member and an electrofusion joint with a clamp member.

従来、熱可塑性樹脂製の樹脂管が熱融着により連結される電気融着継手が知られている。電気融着継手は筒状をなしている。電気融着継手の内部に樹脂管を挿通した状態で給電端子に電流を流すことで、電気融着継手の内部に設けられた電熱線が発熱し、樹脂管の外周面が溶融されて、電気融着継手の内周面と融着される。 2. Description of the Related Art Conventionally, an electric fusion joint in which a resin pipe made of a thermoplastic resin is connected by thermal fusion is known. The electric fusion joint has a cylindrical shape. By passing a current through the power supply terminal with the resin pipe inserted inside the electric fusion joint, the heating wire provided inside the electric fusion joint generates heat, and the outer peripheral surface of the resin pipe is melted. It is fused with the inner peripheral surface of the fusion joint.

このような電気融着継手の熱融着による連結作業では、一定の時間がかかる熱融着の最中に、電気融着継手と樹脂管とが位置ずれを起こすことを防ぐために、例えば下記特許文献１に示すようなクランプ部材が用いられる。電気融着継手および樹脂管に許容される位置ずれ量としては、例えば中心軸線同士の傾きが３°以下であることが求められる。また、電気融着継手からの樹脂管の抜け量が１ｍｍ以内であることが求められる。
このクランプ部材は金属材料により形成され、熱融着における冷却中に、電気融着継手における一対の給電端子、および電気融着継手に接続される一対の樹脂管を、一体に保持した状態を維持する。 In the connection work by heat fusion of such an electric fusion joint, in order to prevent the electric fusion joint and the resin pipe from being displaced during the heat fusion that takes a certain time, for example, the following patents A clamp member as shown in Document 1 is used. As the amount of positional deviation allowed for the electric fusion joint and the resin pipe, for example, the inclination between the central axes is required to be 3 ° or less. In addition, it is required that the amount of the resin pipe coming out of the electrofusion joint is within 1 mm.
This clamp member is made of a metal material, and maintains a state in which the pair of power supply terminals in the electric fusion joint and the pair of resin pipes connected to the electric fusion joint are integrally held during cooling in the thermal fusion. To do.

特開２００７−１５５０６４号公報JP 2007-1555064 A

しかしながら、前記従来のクランプ部材では、金属材料により形成されているので、クランプ部材が高価になり、同時に複数のクランプ部材を手配するのに費用がかさむ。このため、施工作業の費用を抑えながら、熱融着における冷却中に、他の電気融着継手に樹脂管を接続することができず、作業効率が悪かった。 However, since the conventional clamp member is made of a metal material, the clamp member becomes expensive, and it is expensive to arrange a plurality of clamp members at the same time. For this reason, while suppressing the cost of construction work, the resin pipe could not be connected to another electrical fusion joint during cooling in heat fusion, and work efficiency was poor.

本発明は、前述した事情に鑑みてなされたものであって、安価な構成として費用を抑えながら、電気融着継手に樹脂管を接続する施工作業を、複数の箇所で効率的に行うことができるクランプ部材及びクランプ部材付き電気融着継手を提供することを目的とする。 The present invention has been made in view of the circumstances described above, and it is possible to efficiently perform construction work for connecting a resin pipe to an electric fusion joint at a plurality of locations while suppressing the cost as an inexpensive configuration. An object of the present invention is to provide a clamp member and an electrofusion joint with a clamp member.

前記課題を解決するために、本発明は以下の手段を提案している。
本発明に係るクランプ部材は、熱可塑性樹脂製の樹脂管と、前記樹脂管が熱融着により接続される電気融着継手と、を固定する樹脂製のクランプ部材であって、内側に前記樹脂管が挿入された状態で、前記樹脂管を保持するように縮径可能な締付帯部と、前記締付帯部の中心軸線回りに周回する周方向に互いに係合することで、前記締付帯部の縮径状態を維持する一対の係合部と、前記締付帯部に連結され、前記電気融着継手の給電端子を保持する保持部と、を備え、前記一対の係合部には、互いに係合可能な係合歯が形成されていることを特徴とする。 In order to solve the above problems, the present invention proposes the following means.
The clamp member according to the present invention is a resin clamp member that fixes a resin pipe made of a thermoplastic resin and an electric fusion joint to which the resin pipe is connected by thermal fusion, and the resin inside A fastening band part that can be reduced in diameter so as to hold the resin pipe in a state where the pipe is inserted, and a fastening band part that engages with each other in a circumferential direction that circulates around a central axis of the fastening band part. A pair of engaging portions that maintain a reduced diameter state of the first and second fastening portions, and a holding portion that is connected to the tightening band portion and holds a power supply terminal of the electrofusion joint. Engageable engaging teeth are formed.

この発明では、樹脂管を熱融着により電気融着継手に接続、固定する際に、クランプ部材における保持部が、電気融着継手の給電端子を保持した状態にしたうえで、樹脂管をクランプ部材の締付帯部の内側に挿入しながら、電気融着継手の開口部に挿入する。その後、クランプ部材における一対の係合部に各別に形成された係合歯同士を互いに係合させることで、一対の係合部同士が、互いに締付帯部が拡径する方向に相対変位するのを規制することができる。そしてこのように、クランプ部材により、電気融着継手と樹脂管とを仮固定した状態で、給電端子に電流を流すことで、電気融着継手に樹脂管が熱融着される。 In this invention, when the resin pipe is connected and fixed to the electric fusion joint by heat fusion, the holding portion of the clamp member holds the power supply terminal of the electric fusion joint, and then the resin pipe is clamped. It inserts in the opening part of an electrofusion joint, inserting in the inside of the fastening belt | band | zone part of a member. Thereafter, by engaging the engagement teeth formed separately to the pair of engagement portions of the clamp member, the pair of engagement portions are relatively displaced in the direction in which the fastening band portion expands. Can be regulated. In this way, the resin pipe is heat-sealed to the electric fusion joint by passing a current through the power supply terminal in a state where the electric fusion joint and the resin pipe are temporarily fixed by the clamp member.

ここで、本発明ではクランプ部材が樹脂製であるため、安価な構成とすることができる。このため、同時に複数のクランプ部材を手配したとしても費用がかさむことが抑えられ、電気融着継手に樹脂管を接続する施工作業を、複数の箇所で効率的に行うことができる。
また、内側に樹脂管が挿入された締付帯部の縮径状態を保持する一対の係合部に、前記係合歯が各別に形成されているので、締付帯部により確実に樹脂管を保持することができる。
また、電気融着継手の給電端子を保持する保持部が締付帯部に連結されているので、電気融着継手と別体により構成されたクランプ部材により、電気融着継手を確実に保持することができる。 Here, in the present invention, since the clamp member is made of resin, an inexpensive configuration can be obtained. For this reason, even if it arranges several clamp members simultaneously, it can suppress that cost increases, and the construction operation | work which connects a resin pipe | tube to an electrofusion joint can be performed efficiently in several places.
In addition, since the engagement teeth are formed in a pair of engagement portions that hold the reduced diameter state of the tightening band portion in which the resin tube is inserted inside, the resin tube is securely held by the tightening band portion. can do.
In addition, since the holding portion for holding the power supply terminal of the electric fusion joint is connected to the fastening band portion, the electric fusion joint can be securely held by the clamp member formed separately from the electric fusion joint. Can do.

また、前記一対の係合部の少なくとも一方には、前記中心軸線に沿う軸方向と直交する径方向の外側に向けて突出する操作部が設けられてもよい。
この場合には、一対の係合部の少なくとも一方に、径方向の外側に向けて突出する操作部が設けられている。このため、操作部を操作して、一対の係合部における係合歯同士を、締付帯部が縮径する方向に互いに相対変位させる締付作業を容易に行うことができる。 In addition, at least one of the pair of engaging portions may be provided with an operation portion that protrudes outward in the radial direction perpendicular to the axial direction along the central axis.
In this case, at least one of the pair of engaging portions is provided with an operation portion that protrudes outward in the radial direction. For this reason, it is possible to easily perform a tightening operation of operating the operation portion to relatively displace the engagement teeth in the pair of engagement portions in the direction in which the tightening band portion is reduced in diameter.

また、前記締付帯部の内周面には、前記中心軸線に沿う軸方向と直交する径方向に向けて突出する突起部が形成されてもよい。
この場合には、内側に樹脂管が挿入された締付帯部が縮径した際に、締付帯部の内周面に形成された突起部が、樹脂管の外周面に局所的に押圧されることとなる。これにより、締付帯部の内側から樹脂管が抜けるのを抑制し、クランプ部材により、強固に樹脂管を保持することができる。 In addition, a protruding portion that protrudes in a radial direction perpendicular to the axial direction along the central axis may be formed on the inner peripheral surface of the fastening band portion.
In this case, when the tightening band portion into which the resin tube is inserted is reduced in diameter, the protrusion formed on the inner peripheral surface of the tightening band portion is locally pressed against the outer peripheral surface of the resin tube. It will be. Thereby, it is possible to suppress the resin tube from coming off from the inside of the fastening band portion, and the resin tube can be firmly held by the clamp member.

また、前記保持部は、前記締付帯部における、前記中心軸線に沿う軸方向の端部に連結され、かつ前記電気融着継手の開口端縁に当接する連結片を備え、前記連結片における前記軸方向の大きさは、３ｍｍ以上であってもよい。 In addition, the holding portion includes a connecting piece that is connected to an end portion in the axial direction along the central axis line in the fastening band portion and abuts against an opening edge of the electrofusion joint, and The size in the axial direction may be 3 mm or more.

この場合には、締付帯部における軸方向の端部に連結され、電気融着継手の開口端縁と当接する連結片の軸方向の大きさが、３ｍｍ以上となっている。このため、締付帯部における軸方向の端部と、電気融着継手と、の間に３ｍｍ以上の隙間を設けることが可能になる。
したがって、例えば樹脂管の外周面に、電気融着継手への挿入の程度を示す挿入標線が設けられている場合に、外部からこの挿入標線を視認しやすくすることができる。これにより、電気融着継手に樹脂管が確実に挿入された状態とすることで、施工作業の正確性を確保することができる。 In this case, the size in the axial direction of the connecting piece that is connected to the end portion in the axial direction of the fastening band portion and abuts against the opening edge of the electrofusion joint is 3 mm or more. For this reason, it becomes possible to provide a gap of 3 mm or more between the axial end of the fastening band and the electrofusion joint.
Therefore, for example, when an insertion mark indicating the degree of insertion into the electric fusion joint is provided on the outer peripheral surface of the resin pipe, the insertion mark can be easily visually recognized from the outside. Thereby, the accuracy of the construction work can be ensured by ensuring that the resin pipe is securely inserted into the electric fusion joint.

また前記保持部は、前記締付帯部における、前記中心軸線に沿う軸方向の一方側の端部に連結され、かつ前記電気融着継手の開口端縁に当接する連結片を備え、前記一方側の端部のうち、前記中心軸線を前記径方向に挟む前記連結片の反対側に位置する部分には、前記軸方向に向けて突出する突出片が形成されてもよい。 In addition, the holding portion includes a connecting piece that is connected to an end portion on one side in the axial direction along the central axis line in the fastening band portion and abuts against an opening edge of the electrofusion joint. A projecting piece projecting in the axial direction may be formed in a portion of the end portion located on the opposite side of the connecting piece sandwiching the central axis in the radial direction.

この場合には、締付帯部における連結片が連結された、締付帯部の一方側の端部のうち、中心軸線を径方向に挟む連結片の反対側に位置する部分に、突出片が形成されている。このため、連結片が電気融着継手の開口端縁と当接することで、締付帯部の一方側の端部と、電気融着継手の開口端縁と、の間に軸方向の隙間が形成されても、突出片が電気融着継手の開口端縁に軸方向に当接する。これにより、クランプ部材が樹脂管を保持した状態で、前述した軸方向の隙間を埋めるように締付帯部が電気融着継手に対して傾くのを抑えることができる。 In this case, a projecting piece is formed at a portion located on the opposite side of the connecting piece that sandwiches the central axis in the radial direction among the end portions on one side of the fastening band portion to which the connecting piece in the fastening band portion is connected. Has been. For this reason, an axial gap is formed between the end of one side of the fastening band and the opening edge of the electrofusion joint by the contact of the connecting piece with the opening edge of the electrofusion joint. Even if it does, a protrusion piece contact | abuts to the opening edge of an electrofusion joint in an axial direction. Accordingly, it is possible to suppress the fastening band portion from being inclined with respect to the electrofusion joint so as to fill the above-described axial gap while the clamp member holds the resin pipe.

また、前記一対の係合部のうちのいずれか一方、および前記保持部それぞれにおける前記周方向の位置は、互いに同等であってもよい。
この場合には、一対の係合部のうちのいずれか一方、および保持部の周方向の位置が互いに同等である。また、保持部は、電気融着継手の給電端子を保持するため、一般に電融着継手の上側に位置している。このため、一対の係合部のうちの他方が、水平方向に延びる姿勢となりやすく、一対の係合部同士を相対変位させる作業を容易に行うことができる。
また、一対の係合部のうちの一方、および保持部の周方向の位置が同等であるため、一対の係合部が水平方向にかさ張るのを抑えることができる。 In addition, the circumferential position of any one of the pair of engaging portions and the holding portion may be equal to each other.
In this case, any one of the pair of engaging portions and the circumferential position of the holding portion are equal to each other. Moreover, in order to hold | maintain the electric power feeding terminal of an electrofusion joint, a holding | maintenance part is generally located in the upper side of an electrofusion joint. For this reason, the other of the pair of engaging portions tends to be in a posture extending in the horizontal direction, and the work of relatively displacing the pair of engaging portions can be easily performed.
Moreover, since the position of the circumferential direction of one of a pair of engaging parts and the holding | maintenance part is equivalent, it can suppress that a pair of engaging part is bulging in a horizontal direction.

前記一対の係合部のうちの前記一方と、前記保持部と、の間には、前記中心軸線に沿う軸方向の隙間が形成されてもよい。
この場合には、一対の係合部のうちの一方と、保持部と、の間に軸方向の隙間が形成されている。このため、一対の係合部それぞれにおける各係合歯同士を互いに係合させた際に、それぞれの係合部を変位しやすくすることで、円滑に各係合歯同士を係合させることができる。 An axial gap along the central axis may be formed between the one of the pair of engaging portions and the holding portion.
In this case, an axial gap is formed between one of the pair of engaging portions and the holding portion. For this reason, when each engagement tooth in each of a pair of engagement parts is mutually engaged, each engagement tooth can be smoothly engaged by making each engagement part easy to displace. it can.

前記一対の係合部のうちの他方には、前記一対の係合部の一方が前記中心軸線方向に沿う軸方向に相対的にずれることを阻止する突起部材が形成されていてもよい。
この場合には、クランプ部材の一対の係合部同士を係合させる際、一方の係合部が保持部側にずれて他方の係合部との係合面積が小さくなることを阻止し、安定してクランプできる。
なお、一対の係合部にそれぞれ形成された複数の係合歯における、いずれか一方または両方の先端側の係合歯が後続の係合歯よりも高さが低く形成されていてもよい。
この場合、一対の係合部の複数の係合歯同士を係合させる際、一方または両方の係合部の先端側の係合歯の高さが低いため比較的小さな力で初期の係合による仮締めが行え、その後は工具等を用いて比較的大きな力で後続の係合歯同士を係合させることができる。 A protruding member may be formed on the other of the pair of engaging portions to prevent one of the pair of engaging portions from relatively shifting in the axial direction along the central axis direction.
In this case, when engaging the pair of engaging parts of the clamp member, one engaging part is prevented from shifting to the holding part side and the engaging area with the other engaging part is reduced, Can clamp stably.
Note that one or both of the engagement teeth on the plurality of engagement teeth respectively formed on the pair of engagement portions may be formed lower in height than the subsequent engagement teeth.
In this case, when engaging the plurality of engaging teeth of the pair of engaging portions, the initial engagement with a relatively small force because the height of the engaging teeth on the tip side of one or both engaging portions is low. Then, the subsequent engagement teeth can be engaged with each other with a relatively large force using a tool or the like.

前記保持部には、前記電気融着継手の給電端子を挿入する挿通孔が形成され、前記挿通孔には前記給電端子に設けた突部を挿入する切欠部が形成されていてもよい。
電気融着継手の給電端子の外周面に突部を設けたことで、バーコード等のタグを取り付ける際に外れにくくなる上に、給電端子をクランプ部材の保持部の挿通孔に挿入する際に突部が挿通孔の切欠部に挿入されるため、保持部１２が外れにくく見栄えが良い。 The holding portion may be formed with an insertion hole for inserting a power supply terminal of the electric fusion joint, and the insertion hole may be formed with a notch for inserting a protrusion provided on the power supply terminal.
Providing protrusions on the outer peripheral surface of the power supply terminal of the electric fusion joint makes it difficult to come off when attaching a tag such as a barcode, and also when inserting the power supply terminal into the insertion hole of the holding part of the clamp member Since the protrusion is inserted into the cutout portion of the insertion hole, the holding portion 12 is hard to come off and looks good.

また、本発明に係るクランプ部材付き電気融着継手は、熱可塑性樹脂製の樹脂管が熱融着により接続される電気融着継手と、前述したいずれかのクランプ部材と、を備えてもよい。
この場合には、電気融着継手とクランプ材とを備えている。このため電気融着継手に樹脂管を接続する施工作業において、クランプ部材を個別に準備する必要が無く、より一層効率的に施工作業を行うことができる。しかも、クランプ部材は樹脂製であるため、締付帯部を弾性変位させて樹脂管に緊密に巻き付けて一対の係合部で係合し、固定できる。 Moreover, the electrofusion joint with a clamp member according to the present invention may include an electrofusion joint to which a resin pipe made of a thermoplastic resin is connected by thermal fusion, and any of the clamp members described above. .
In this case, an electrofusion joint and a clamp member are provided. For this reason, in the construction work which connects a resin pipe to an electric fusion joint, it is not necessary to prepare a clamp member separately and construction work can be performed still more efficiently. Moreover, since the clamp member is made of resin, it can be fixed by elastically displacing the tightening band portion and tightly winding it around the resin tube and engaging with the pair of engaging portions.

本発明によれば、安価な構成として費用を抑えながら、電気融着継手に樹脂管を接続する施工作業を、複数の箇所で効率的に行うことができる。 ADVANTAGE OF THE INVENTION According to this invention, the construction operation | work which connects a resin pipe | tube to an electric fusion joint can be efficiently performed in several places, suppressing expense as an inexpensive structure.

本発明の第１実施形態に係るクランプ付き電気融着継手の一部断面正面図である。It is a partial cross section front view of the electric fusion joint with a clamp concerning a 1st embodiment of the present invention. 図１に示すクランプ部材の斜視図である。It is a perspective view of the clamp member shown in FIG. 図１に示すクランプ部材の軸方向から見た平面図である。It is the top view seen from the axial direction of the clamp member shown in FIG. 本発明の第２実施形態に係るクランプ部材の軸方向から見た平面図である。It is the top view seen from the axial direction of the clamp member concerning a 2nd embodiment of the present invention. 図４に示すクランプ部材のＡ矢視図である。It is A arrow directional view of the clamp member shown in FIG. 本発明の第３実施形態に係るクランプ部材の斜視図である。It is a perspective view of the clamp member concerning a 3rd embodiment of the present invention. 図６に示すクランプ部材を樹脂管に取り付けて電気融着継手に連結した斜視図である。It is the perspective view which attached the clamp member shown in FIG. 6 to the resin pipe, and connected with the electrofusion joint. 電気融着継手の変形例による給電端子とタグを示す部分図である。It is a fragmentary figure which shows the electric power feeding terminal and tag by the modification of an electric fusion joint. 図８に示す電気融着継手の給電端子を保持部に挿入させたクランプ部材の変形例の図である。It is a figure of the modification of the clamp member which made the holding | maintenance part insert the electric power feeding terminal of the electric fusion joint shown in FIG. 本発明の第４実施形態に係るクランプ部材の平面図である。It is a top view of the clamp member concerning a 4th embodiment of the present invention. 図１０における第１係合部の拡大図である。It is an enlarged view of the 1st engaging part in FIG. 第４実施形態の変形例を示すものであり、第２係合部の拡大図である。The modification of 4th Embodiment is shown and it is an enlarged view of a 2nd engaging part.

（第１実施形態）
以下、図面を参照し、本発明の第１実施形態に係るクランプ部材１、およびクランプ部材付き電気融着継手３について説明する。
図１に示すように、クランプ部材付き電気融着継手３は、電気融着継手２とクランプ部材１とを備えている。電気融着継手２の両側の開口端部に、２つのクランプ部材１が各別に設けられている。 (First embodiment)
Hereinafter, a clamp member 1 and an electrofusion joint 3 with a clamp member according to a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the electrofusion joint 3 with a clamp member includes an electrofusion joint 2 and a clamp member 1. Two clamp members 1 are provided separately at the open ends on both sides of the electric fusion joint 2.

電気融着継手２には、熱可塑性樹脂製の樹脂管１００が熱融着により接続される。
クランプ部材１は、樹脂管１００が熱融着により電気融着継手２に接続、固定される際に、樹脂管１００と電気融着継手２とを仮固定する。
ここで、樹脂管１００と電気融着継手２との仮固定とは、熱融着の作業中に、樹脂管１００の中心軸線に対して電気融着継手２の中心軸線が傾いたり、樹脂管１００が電気融着継手２の開口部から抜けたりするのを防ぐことを意味する。 A resin pipe 100 made of a thermoplastic resin is connected to the electric fusion joint 2 by thermal fusion.
The clamp member 1 temporarily fixes the resin tube 100 and the electrofusion joint 2 when the resin tube 100 is connected and fixed to the electrofusion joint 2 by heat fusion.
Here, the temporary fixing between the resin pipe 100 and the electric fusion joint 2 means that the central axis of the electric fusion joint 2 is inclined with respect to the central axis of the resin pipe 100 during the heat fusion operation, or the resin pipe. This means that 100 is prevented from coming out of the opening of the electric fusion joint 2.

電気融着継手２は筒状をなしている。電気融着継手２の周壁２０のうち、内周面の近傍には、電熱線２１が樹脂管１００毎に各別に埋設されている。また、電気融着継手２の周壁２０のうち、各開口端部の近傍には、電熱線２１と導通された給電端子２２が各別に設けられている。給電端子２２から、電熱線２１に電流を流すことで、電熱線２１を発熱させて、電気融着継手２の内側に挿入された樹脂管１００を、電気融着継手２の内面に熱融着することができる。
以下の説明において、電気融着継手２の中心軸線Ｏに沿う方向を軸方向という。また、軸方向から見た平面視で中心軸線Ｏに交差する方向を径方向といい、中心軸線Ｏ回りに周回する方向を周方向という。 The electric fusion joint 2 has a cylindrical shape. A heating wire 21 is embedded for each resin pipe 100 in the vicinity of the inner peripheral surface of the peripheral wall 20 of the electric fusion joint 2. In addition, in the peripheral wall 20 of the electrofusion joint 2, power supply terminals 22 that are electrically connected to the heating wires 21 are provided in the vicinity of each opening end. By causing a current to flow from the power supply terminal 22 to the heating wire 21, the heating wire 21 generates heat, and the resin tube 100 inserted inside the electrofusion joint 2 is thermally fused to the inner surface of the electrofusion joint 2. can do.
In the following description, a direction along the central axis O of the electrofusion joint 2 is referred to as an axial direction. Further, a direction intersecting the central axis O in a plan view viewed from the axial direction is referred to as a radial direction, and a direction around the central axis O is referred to as a circumferential direction.

図１および図２に示すように、クランプ部材１は、内側に樹脂管１００が挿入された状態で、樹脂管１００を保持するように縮径可能な締付帯部１０を備えている。
図３に示すように、締付帯部１０は、軸方向から見た平面視で、周方向の一部が分断されたＣ字状をなしている。締付帯部１０のうち、周方向に分断された部分の標準状態における大きさは、中心軸線Ｏを中心とする中心角θが式（１）を満たしている。
θ＞３６０−３６０×Ｄ０／Ｄ１…（１）
ここで、Ｄ０：樹脂管１００の外径、Ｄ１：締付帯部１０の内径を指す。また、締付帯部１０の標準状態とは、図３に示すように、後述する一対の係合部１１Ａ、１１Ｂそれぞれの先端部同士が、径方向に延びる一直線状に配置された状態を指す。 As shown in FIGS. 1 and 2, the clamp member 1 includes a fastening band portion 10 that can be reduced in diameter so as to hold the resin tube 100 in a state where the resin tube 100 is inserted inside.
As shown in FIG. 3, the fastening band portion 10 has a C shape in which a part in the circumferential direction is divided in a plan view as viewed from the axial direction. Regarding the size in the standard state of the portion of the fastening band 10 that is divided in the circumferential direction, the central angle θ about the central axis O satisfies the formula (1).
θ> 360-360 × D0 / D1 (1)
Here, D0: the outer diameter of the resin tube 100, and D1: the inner diameter of the fastening band portion 10. In addition, the standard state of the fastening band portion 10 indicates a state in which tips of a pair of engaging portions 11A and 11B described later are arranged in a straight line extending in the radial direction, as shown in FIG.

またクランプ部材１は、図２および図３に示すように、周方向に互いに係合することで、締付帯部１０の縮径状態を維持する一対の係合部１１Ａ，１１Ｂと、締付帯部１０に連結され、電気融着継手２の給電端子２２を保持する保持部１２と、を備えている。
一対の係合部１１Ａ，１１Ｂ、および保持部１２は、合成樹脂材料の射出成形等により、締付帯部１０と一体に形成されている。なお、一対の係合部１１Ａ，１１Ｂ、および保持部１２を、締付帯部１０と別体に形成してもよい。 As shown in FIGS. 2 and 3, the clamp member 1 is engaged with each other in the circumferential direction to maintain a reduced diameter state of the tightening band portion 10, and a tightening band portion. 10 and a holding portion 12 that holds the power supply terminal 22 of the electrofusion joint 2.
The pair of engaging portions 11A and 11B and the holding portion 12 are integrally formed with the fastening band portion 10 by injection molding of a synthetic resin material or the like. Note that the pair of engaging portions 11 A and 11 B and the holding portion 12 may be formed separately from the fastening band portion 10.

図３に示すように、一対の係合部１１Ａ，１１Ｂは、前記平面視で、締付帯部１０における周方向の両端部に、各別に形成されている。一対の係合部１１Ａ，１１Ｂは、互いに周方向に沿って延びている。
一対の係合部１１Ａ，１１Ｂは、第１係合部１１Ａと、締付帯部１０が縮径した状態で、第１係合部１１Ａよりも径方向の外側に位置する第２係合部１１Ｂと、を備えている。 As shown in FIG. 3, the pair of engaging portions 11 A and 11 B are formed separately at both ends in the circumferential direction of the fastening band 10 in the plan view. The pair of engaging portions 11A and 11B extend along the circumferential direction.
The pair of engaging portions 11A and 11B is a second engaging portion 11B located on the outer side in the radial direction from the first engaging portion 11A in a state where the diameter of the first engaging portion 11A and the fastening band portion 10 is reduced. And.

締付帯部１０における第２係合部１１Ｂが形成された端部には、第２係合部１１Ｂよりも径方向の内側に位置し、かつ周方向に延びる案内部１０Ａが形成されている。
案内部１０Ａは、第１係合部１１Ａと第２係合部１１Ｂとが、周方向に互いに係合する際に、第１係合部１１Ａに対して径方向の内側に位置し、第１係合部１１Ａの周方向の移動を案内する。すなわち、第１係合部１１Ａは、第２係合部１１Ｂと案内部１０Ａとの径方向の間の空間に挿入される。 A guide portion 10 A is formed at the end of the tightening band portion 10 where the second engagement portion 11 B is formed, and is positioned radially inward of the second engagement portion 11 B and extends in the circumferential direction.
When the first engaging portion 11A and the second engaging portion 11B are engaged with each other in the circumferential direction, the guide portion 10A is located on the inner side in the radial direction with respect to the first engaging portion 11A. The movement of the engaging portion 11A in the circumferential direction is guided. That is, the first engaging portion 11A is inserted into the space between the second engaging portion 11B and the guide portion 10A in the radial direction.

そして本実施形態では、一対の係合部１１Ａ，１１Ｂには、締付帯部１０が縮径する方向の互いの相対変位を許容し、かつ締付帯部１０が拡径する方向の互いの相対変位を規制する係合歯１３Ａ，１３Ｂが各別に形成されている。一対の係合歯１３Ａ，１３Ｂは、前記平面視で三角形状(鋸歯状)をなし、周方向に連続して形成されている。 In the present embodiment, the pair of engaging portions 11A and 11B are allowed to be displaced relative to each other in the direction in which the tightening band portion 10 is reduced in diameter, and are relatively displaced in the direction in which the tightening band portion 10 is increased in diameter. Engagement teeth 13A and 13B that regulate the above are formed separately. The pair of engaging teeth 13A, 13B has a triangular shape (sawtooth shape) in the plan view and is formed continuously in the circumferential direction.

一対の係合歯１３Ａ，１３Ｂのうち、第１係合部１１Ａに形成された第１係合歯１３Ａは、第１係合部１１Ａにおける径方向の外側を向く外側面に形成されている。また、一対の係合歯１３Ａ，１３Ｂのうち、第２係合部１１Ｂに形成された第２係合歯１３Ｂは、第２係合部１１Ｂにおける径方向の内側を向く内側面に形成されている。
第１係合部１１Ａにおいて、第１係合歯１３Ａが形成されている部分の周方向の長さは、第２係合部１１Ｂにおいて、第２係合歯１３Ｂが形成されている部分の周方向の長さと同等となっている。 Of the pair of engaging teeth 13A and 13B, the first engaging tooth 13A formed on the first engaging portion 11A is formed on the outer surface of the first engaging portion 11A facing outward in the radial direction. Of the pair of engaging teeth 13A and 13B, the second engaging tooth 13B formed on the second engaging portion 11B is formed on the inner side surface of the second engaging portion 11B facing inward in the radial direction. Yes.
In the first engaging portion 11A, the circumferential length of the portion where the first engaging teeth 13A are formed is the circumference of the portion where the second engaging teeth 13B are formed in the second engaging portion 11B. It is equivalent to the length of the direction.

また本実施形態では、一対の係合部１１Ａ，１１Ｂには、径方向の外側に向けて突出する操作部１４Ａ，１４Ｂが各別に設けられている。操作部１４Ａ，１４Ｂは、第１係合部１１Ａに形成された第１操作部１４Ａと、第２係合部１１Ｂに形成された第２操作部１４Ｂと、を備えている。
第１操作部１４Ａは、第１係合部１１Ａの基端部に形成されている。第２操作部１４Ｂは、第２係合部１１Ｂの先端部に形成されている。 In the present embodiment, the pair of engaging portions 11A and 11B are provided with operation portions 14A and 14B that protrude outward in the radial direction. The operation units 14A and 14B include a first operation unit 14A formed on the first engagement unit 11A and a second operation unit 14B formed on the second engagement unit 11B.
The first operation portion 14A is formed at the proximal end portion of the first engagement portion 11A. The 2nd operation part 14B is formed in the front-end | tip part of the 2nd engaging part 11B.

また本実施形態では、締付帯部１０の内周面には、径方向の内側に向けて突出する突起部１５が形成されている。突起部１５は、周方向に直交する断面視で三角形状をなしている。突起部１５は、締付帯部１０の内周面における軸方向の中央部に形成されている。突起部１５は、締付帯部１０の内周面に全周にわたって連続して延びている。なお、このような態様に限られず、突起部１５は、締付帯部１０の内周面に、周方向に間隔をあけて離散的に設けられてもよい。 Further, in the present embodiment, the inner peripheral surface of the fastening band portion 10 is formed with a protruding portion 15 that protrudes inward in the radial direction. The protrusion 15 has a triangular shape in a cross-sectional view orthogonal to the circumferential direction. The projecting portion 15 is formed at the central portion in the axial direction on the inner peripheral surface of the fastening band portion 10. The protrusion 15 extends continuously on the inner peripheral surface of the fastening band 10 over the entire circumference. In addition, it is not restricted to such an aspect, The protrusion part 15 may be discretely provided in the inner peripheral surface of the fastening belt | band | zone part 10 at intervals in the circumferential direction.

また本実施形態では、図２および図３に示すように、保持部１２は、締付帯部１０における、軸方向の一方側の端部に連結され、軸方向と直交する径方向に延びる連結片１２Ａと、連結片１２Ａに連結され、電気融着継手２の給電端子２２を保持する保持片１２Ｂと、を備えている。連結片１２Ａ、および保持片１２Ｂは一体に形成されている。
連結片１２Ａは、表裏面が軸方向を向く板状部材であり、図３に示すように、軸方向から見た平面視で、２辺が径方向と平行に延びると共に、残り２辺が周方向に延びる略矩形状を呈している。 In the present embodiment, as shown in FIGS. 2 and 3, the holding portion 12 is connected to an end portion on one side in the axial direction in the fastening band portion 10 and extends in a radial direction perpendicular to the axial direction. 12A and a holding piece 12B that is connected to the connecting piece 12A and holds the power supply terminal 22 of the electric fusion joint 2. The connecting piece 12A and the holding piece 12B are integrally formed.
The connecting piece 12A is a plate-like member whose front and back faces in the axial direction, and as shown in FIG. 3, two sides extend in parallel to the radial direction and the remaining two sides are circumferential in a plan view seen from the axial direction. It has a substantially rectangular shape extending in the direction.

図１および図２に示すように、連結片１２Ａは、電気融着継手２の開口端縁に当接する。連結片１２Ａにおける軸方向の大きさＬ１は、３ｍｍ以上である。図示の例では、連結片１２Ａにおける軸方向の大きさＬ１は３ｍｍとなっている。
連結片１２Ａの表裏面のうち、軸方向の他方側（締付帯部１０側）を向く外面には、補強リブ１６が接続されている。補強リブ１６は、締付帯部１０の外周面と、連結片１２Ａの外面と、を接続し、連結片１２Ａが軸方向に変形するのを抑制している。 As shown in FIGS. 1 and 2, the connecting piece 12 A comes into contact with the opening end edge of the electrofusion joint 2. The size L1 in the axial direction of the connecting piece 12A is 3 mm or more. In the illustrated example, the axial size L1 of the connecting piece 12A is 3 mm.
A reinforcing rib 16 is connected to the outer surface of the connecting piece 12A that faces the other side in the axial direction (the tightening band portion 10 side). The reinforcing rib 16 connects the outer peripheral surface of the fastening band 10 and the outer surface of the connecting piece 12A, and suppresses the connecting piece 12A from being deformed in the axial direction.

保持片１２Ｂは、表裏面が径方向を向く板状部材である。連結片１２Ａ、および保持片１２Ｂそれぞれにおける周方向の大きさは、互いに同等となっている。保持片１２Ｂは軸方向から見た平面視で、周方向の中央部が径方向の外側に向けて突出するように湾曲している。保持片１２Ｂの表裏面のうち、径方向の内側を向く内面は、電気融着継手２の外周面に当接する。
保持片１２Ｂには、保持片１２Ｂを径方向に貫く挿通孔１２Ｃが形成されている。挿通孔１２Ｃ内に電気融着継手２の給電端子２２が挿通された状態で保持される。 The holding piece 12B is a plate-like member whose front and back surfaces face the radial direction. The sizes of the connecting piece 12A and the holding piece 12B in the circumferential direction are equal to each other. The holding piece 12B is curved so that the central portion in the circumferential direction protrudes outward in the radial direction in a plan view seen from the axial direction. Of the front and back surfaces of the holding piece 12 B, the inner surface facing the inner side in the radial direction contacts the outer peripheral surface of the electrofusion joint 2.
The holding piece 12B is formed with an insertion hole 12C that penetrates the holding piece 12B in the radial direction. The power supply terminal 22 of the electric fusion joint 2 is held in the insertion hole 12C.

また本実施形態では、締付帯部１０における軸方向の一方側の端部のうち、中心軸線Ｏを径方向に挟む連結片１２Ａの反対側に位置する部分には、軸方向に向けて突出する突出片１７が形成されている。
突出片１７の径方向の大きさは、締付帯部１０の径方向の大きさと同等となっている。図示の例では、突出片１７は、連結片１２Ａにおける周方向の中央部と、中心軸線Ｏを径方向に挟む位置に配置されている。
また、突出片１７の軸方向の大きさＬ２は、連結片１２Ａにおける軸方向の大きさＬ１と同じ３ｍｍとなっている。突出片１７は、締付帯部１０の側面に、周方向に間隔をあけて離散的に設けられてもよい。 Moreover, in this embodiment, it protrudes toward an axial direction in the part located in the other side of the connection piece 12A which pinches | interposes the center axis line O in the axial direction among the edge parts of the axial direction in the fastening belt | band | zone part 10. As shown in FIG. A protruding piece 17 is formed.
The size of the protruding piece 17 in the radial direction is the same as the size of the fastening band portion 10 in the radial direction. In the illustrated example, the protruding piece 17 is disposed at a position that sandwiches the central portion in the circumferential direction of the connecting piece 12A and the central axis O in the radial direction.
Further, the axial size L2 of the protruding piece 17 is 3 mm, which is the same as the axial size L1 of the connecting piece 12A. The protruding pieces 17 may be discretely provided on the side surfaces of the fastening band portion 10 at intervals in the circumferential direction.

次に、クランプ部材１による電気融着継手２と樹脂管１００との仮固定の作業について説明する。
図１に示すように、樹脂管１００を熱融着により電気融着継手２に接続する際には、クランプ部材１における保持部１２の挿通孔１２Ｃ内に、電気融着継手２の給電端子２２を挿通する。 Next, the operation of temporarily fixing the electric fusion joint 2 and the resin pipe 100 by the clamp member 1 will be described.
As shown in FIG. 1, when the resin tube 100 is connected to the electric fusion joint 2 by heat fusion, the feeding terminal 22 of the electric fusion joint 2 is inserted into the insertion hole 12 C of the holding portion 12 in the clamp member 1. Is inserted.

そして、保持部１２における連結片１２Ａ、および締付帯部１０に形成された突出片１７を、電気融着継手２の開口端縁に各別に当接しながら、樹脂管１００が締付帯部１０の内側を通って、電気融着継手２の開口部内に挿通できるように位置決めする。
これにより、締付帯部１０における軸方向の一方側の端部と、電気融着継手２の開口端縁と、の間に３ｍｍの隙間が形成される。 The resin pipe 100 is located inside the fastening band 10 while the connecting piece 12A in the holding part 12 and the projecting piece 17 formed on the fastening band 10 are brought into contact with the opening edge of the electrofusion joint 2 separately. And is positioned so that it can be inserted into the opening of the electric fusion joint 2.
As a result, a gap of 3 mm is formed between the end of one side in the axial direction of the fastening band 10 and the opening edge of the electrofusion joint 2.

そして、樹脂管１００をクランプ部材１の締付帯部１０の内側に挿入しながら、電気融着継手２の開口部に挿入する。この際、クランプ部材１における一対の係合部１１Ａ，１１Ｂに各別に形成された係合歯１３Ａ，１３Ｂ同士を互いに係合させる。係合部１１Ａ，１１Ｂの操作は、操作部１４Ａ，１４Ｂをペンチで締めることで行う。
係合歯１３Ａ，１３Ｂ同士が互いに係合することで、一対の係合部１１Ａ，１１Ｂ同士が、締付帯部１０が拡径する方向に、互いに相対変位するのを規制することができる。そして、クランプ部材１により、電気融着継手２と樹脂管１００とが仮固定された状態となる。 Then, the resin pipe 100 is inserted into the opening of the electrofusion joint 2 while being inserted inside the fastening band 10 of the clamp member 1. At this time, the engaging teeth 13A and 13B formed separately on the pair of engaging portions 11A and 11B in the clamp member 1 are engaged with each other. The engaging portions 11A and 11B are operated by tightening the operating portions 14A and 14B with pliers.
By engaging the engaging teeth 13A and 13B with each other, it is possible to restrict the pair of engaging portions 11A and 11B from being displaced relative to each other in the direction in which the fastening band portion 10 expands in diameter. Then, the electrofusion joint 2 and the resin pipe 100 are temporarily fixed by the clamp member 1.

最後に、給電端子２２に電流を流すことで、電気融着継手２に樹脂管１００が熱融着される。熱融着が完了した後には、クランプ部材１を電気融着継手２に付けたまま残置しておく。その後、通水試験を行ない、漏水が発生しなければクランプ部材１を残置したまま通水して、電気融着継手２や樹脂管１００からなる配管システムを使用する。なお、クランプ部材１を、電気融着継手２および樹脂管１００から取り外してもよい。
仮に、クランプ部材１を取り外す場合には、第２操作部１４Ｂを径方向の外側に引張りながら、第１操作部１４Ａを周方向のうち、第２操作部１４Ｂから離間する方向に向けて引きぬく。これにより、一対の係合部１１Ａ，１１Ｂ同士の係合が解除され、締付帯部１０を樹脂管１００から取り外し、保持部１２の挿通孔１２Ｃを給電端子２２から取り外すことができる。
また、クランプ部材１を残置する場合には、係合部１１Ａ，１１Ｂの幅を引き抜きできない程度にしておくのが好ましい。 Finally, the resin pipe 100 is heat-sealed to the electric fusion joint 2 by passing a current through the power supply terminal 22. After the heat fusion is completed, the clamp member 1 is left attached to the electric fusion joint 2. Thereafter, a water passage test is performed. If no water leakage occurs, water is passed with the clamp member 1 left, and a piping system including the electric fusion joint 2 and the resin pipe 100 is used. The clamp member 1 may be detached from the electrofusion joint 2 and the resin pipe 100.
If the clamp member 1 is to be removed, the first operating portion 14A is pulled in the circumferential direction away from the second operating portion 14B while pulling the second operating portion 14B outward in the radial direction. . Thereby, the engagement between the pair of engaging portions 11 A and 11 B is released, the fastening band portion 10 can be removed from the resin tube 100, and the insertion hole 12 C of the holding portion 12 can be removed from the power supply terminal 22.
Further, when leaving the clamp member 1, it is preferable that the width of the engaging portions 11 A and 11 B is set so as not to be pulled out.

以上説明したように、本実施形態に係るクランプ部材１によれば、クランプ部材１が樹脂製であるため、安価な構成とすることができる。このため、同時に複数のクランプ部材１を手配したとしても費用がかさむことが抑えられ、電気融着継手２に樹脂管１００を接続する施工作業を、複数の箇所で効率的に行うことができる。
また、内側に樹脂管１００が挿入された締付帯部１０の縮径状態を保持する一対の係合部１１Ａ，１１Ｂに、前記係合歯１３Ａ，１３Ｂが各別に形成されているので、締付帯部１０により確実に樹脂管１００を保持することができる。
また、電気融着継手２の給電端子２２を保持する保持部１２が締付帯部１０に連結されているので、電気融着継手２と別体により構成されたクランプ部材１により、電気融着継手２を確実に保持することができる。 As described above, according to the clamp member 1 according to the present embodiment, since the clamp member 1 is made of resin, an inexpensive configuration can be achieved. For this reason, even if a plurality of clamp members 1 are arranged at the same time, the cost is kept from increasing, and the construction work for connecting the resin pipe 100 to the electrofusion joint 2 can be performed efficiently at a plurality of locations.
In addition, since the engagement teeth 13A and 13B are formed separately on the pair of engagement portions 11A and 11B that maintain the reduced diameter state of the tightening band portion 10 in which the resin tube 100 is inserted, the tightening band The resin tube 100 can be reliably held by the portion 10.
In addition, since the holding portion 12 that holds the power supply terminal 22 of the electric fusion joint 2 is connected to the fastening band portion 10, the electric fusion joint is formed by the clamp member 1 that is formed separately from the electric fusion joint 2. 2 can be securely held.

また、締付帯部１０のうち、周方向に分断された部分の大きさが、前述した式（１）を満たしている。このため、締付帯部１０の周方向に分断された部分を除く内径が、樹脂管１００の外径よりも短いこととなり、一対の係合部１１Ａ，１１Ｂ同士を相対変位させることで、確実に締付帯部１０により樹脂管１００を保持することができる。
また、締付帯部１０、係合部１１Ａ，１１Ｂ、および保持部１２が一体に形成されているので、クランプ部材１を合成樹脂材料の射出成形等により、容易に形成することができる。
また、クランプ部材１が電気融着継手２と別体に形成されているので、射出成形により形成する場合に、金型が複雑になるのを防ぎ、製造コストを抑えることができる。 In addition, the size of the portion of the fastening band 10 that is divided in the circumferential direction satisfies the above-described formula (1). For this reason, the inner diameter excluding the portion divided in the circumferential direction of the fastening band portion 10 is shorter than the outer diameter of the resin tube 100, and the pair of engaging portions 11A and 11B are reliably displaced by relative displacement. The resin tube 100 can be held by the fastening band 10.
Further, since the fastening band portion 10, the engaging portions 11A and 11B, and the holding portion 12 are integrally formed, the clamp member 1 can be easily formed by injection molding of a synthetic resin material or the like.
Moreover, since the clamp member 1 is formed separately from the electrofusion joint 2, it is possible to prevent the mold from becoming complicated and to reduce the manufacturing cost when formed by injection molding.

また、クランプ部材１が、電気融着継手２における給電端子２２、および接続管を１つずつ保持する。このため、例えば一対の給電端子２２、および電気融着継手２に接続される一対の樹脂管１００を一体に保持する構成と比較して、クランプ部材１のサイズが大きくなるのを抑え、狭い場所での施工作業を容易に行うことができる。 Further, the clamp member 1 holds the power supply terminal 22 and the connection pipe in the electrofusion joint 2 one by one. For this reason, compared with the structure which hold | maintains a pair of power supply terminal 22 and the pair of resin pipes 100 connected to the electrofusion joint 2, for example, it suppresses that the size of the clamp member 1 becomes large, and is a narrow place The construction work at can be easily performed.

また、一対の係合部１１Ａ，１１Ｂに、径方向の外側に向けて突出する操作部１４Ａ，１４Ｂが各別に設けられている。このため、操作部１４Ａ，１４Ｂを操作して、一対の係合部１１Ａ，１１Ｂにおける係合歯１３Ａ，１３Ｂ同士を、締付帯部１０が縮径する方向に互いに相対変位させる締付作業を容易に行うことができる。 The pair of engaging portions 11A and 11B are provided with operation portions 14A and 14B that protrude outward in the radial direction. Therefore, it is easy to perform a tightening operation by operating the operation portions 14A and 14B to relatively displace the engagement teeth 13A and 13B in the pair of engagement portions 11A and 11B in the direction in which the tightening band portion 10 is reduced in diameter. Can be done.

また、締付帯部１０の内周面に、径方向に向けて突出する突起部１５が形成されている。このため、内側に樹脂管１００が挿入された締付帯部１０が縮径した際に、締付帯部１０の内周面に形成された突起部１５が、樹脂管１００の外周面に局所的に押圧されることとなる。これにより、締付帯部１０の内側から樹脂管１００が抜けるのを抑制し、クランプ部材１により、強固に樹脂管１００を保持することができる。 In addition, a projection 15 that protrudes in the radial direction is formed on the inner peripheral surface of the fastening band 10. For this reason, when the fastening band portion 10 into which the resin tube 100 is inserted is reduced in diameter, the protrusion 15 formed on the inner peripheral surface of the tightening band portion 10 is locally formed on the outer peripheral surface of the resin tube 100. It will be pressed. Thereby, it is possible to suppress the resin tube 100 from coming out from the inside of the fastening band portion 10, and to firmly hold the resin tube 100 by the clamp member 1.

また、締付帯部１０における軸方向の端部に連結され、電気融着継手２の開口端縁と当接する連結片１２Ａの軸方向の大きさＬ１が、３ｍｍ以上となっている。このため、締付帯部１０における軸方向の端部と、電気融着継手２と、の間に３ｍｍ以上の隙間を設けることが可能になる。
したがって、例えば樹脂管１００に外周面に、電気融着継手２への挿入の程度を示す挿入標線が設けられている場合に、外部からこの挿入標線を視認しやすくすることができる。これにより、電気融着継手２に樹脂管１００が確実に挿入された状態とすることで、施工作業の正確性を確保することができる。 In addition, the axial size L1 of the connecting piece 12A that is connected to the axial end of the fastening band 10 and contacts the opening edge of the electrofusion joint 2 is 3 mm or more. For this reason, it is possible to provide a gap of 3 mm or more between the axial end of the tightening band 10 and the electrofusion joint 2.
Therefore, for example, when an insertion mark indicating the degree of insertion into the electrofusion joint 2 is provided on the outer peripheral surface of the resin pipe 100, the insertion mark can be easily seen from the outside. Thereby, the accuracy of construction work can be ensured by ensuring that the resin pipe 100 is inserted into the electrofusion joint 2 reliably.

また、締付帯部１０における連結片１２Ａが連結された、締付帯部１０の一方側の端部のうち、中心軸線Ｏを径方向に挟む連結片１２Ａの反対側に位置する部分に、突出片１７が形成されている。このため、連結片１２Ａが電気融着継手２の開口端縁と当接することで、締付帯部１０の一方側の端部と、電気融着継手２の開口端縁と、の間に軸方向の隙間が形成されても、突出片１７が電気融着継手２の開口端縁に軸方向に当接する。これにより、クランプ部材１が樹脂管１００を保持した状態で、前述した軸方向の隙間を埋めるように、締付帯部１０が電気融着継手２に対して傾くのを抑えることができる。 Further, a protruding piece is formed on a portion located on the opposite side of the connecting piece 12A that sandwiches the central axis O in the radial direction among the one end of the fastening band 10 to which the connecting piece 12A of the fastening band 10 is connected. 17 is formed. For this reason, the connecting piece 12 A is in contact with the opening edge of the electrofusion joint 2, so that the axial direction is between the one end of the fastening band 10 and the opening edge of the electrofusion joint 2. Even if this gap is formed, the protruding piece 17 abuts on the opening end edge of the electrofusion joint 2 in the axial direction. Thereby, it is possible to prevent the fastening band portion 10 from being inclined with respect to the electrofusion joint 2 so as to fill the above-described axial gap while the clamp member 1 holds the resin pipe 100.

また、本実施形態に係るクランプ部材付き電気融着継手３では、クランプ部材１と、電気融着継手２と、を備えている。このため、電気融着継手２に樹脂管１００を接続する施工作業において、クランプ部材１を個別に準備する必要が無く、より一層効率的に施工作業を行うことができる。 Moreover, in the electrofusion joint 3 with a clamp member which concerns on this embodiment, the clamp member 1 and the electrofusion joint 2 are provided. For this reason, in the construction work which connects the resin pipe 100 to the electric fusion joint 2, it is not necessary to prepare the clamp member 1 separately, and the construction work can be performed more efficiently.

（第２実施形態）
次に、本発明の第２実施形態について、図４および図５を参照して説明する。なお、以下の実施形態において、第１実施形態と同一の構成については同一の符号を付してその説明は省略し、異なる点についてのみ説明する。 (Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. 4 and FIG. Note that in the following embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different points will be described.

図４に示すように、本実施形態に係るクランプ部材１Ｂでは、一対の係合部１１Ａ，１１Ｂそれぞれの周方向の位置関係が、第１実施形態に係るクランプ部材１と反対になっている。保持部１２のある側を上側としたとき、受け側の係合部１１Ｂは、挿入側の係合部１１Ａより上側となる。
そして、一対の係合部１１Ａ，１１Ｂのうちのいずれか一方、および保持部１２それぞれにおける周方向の位置は、互いに同等となっている。図示の例では、一対の係合部１１Ａ，１１Ｂのうち、径方向の外側に位置する第２係合部１１Ｂ、および保持部１２それぞれにおける周方向の位置が互いに同等となっている。 As shown in FIG. 4, in the clamp member 1B according to the present embodiment, the positional relationship in the circumferential direction between the pair of engaging portions 11A and 11B is opposite to that of the clamp member 1 according to the first embodiment. When the side where the holding portion 12 is located is the upper side, the receiving-side engaging portion 11B is located above the insertion-side engaging portion 11A.
And the position of the circumferential direction in either one of a pair of engaging part 11A, 11B and the holding | maintenance part 12 is mutually equivalent. In the illustrated example, among the pair of engaging portions 11A and 11B, the circumferential positions of the second engaging portion 11B and the holding portion 12 that are located on the outer side in the radial direction are equal to each other.

図４および図５に示すように、第２係合部１１Ｂは、補強リブ１６と一体に形成されている。そして、第２係合部１１Ｂと、保持部１２と、の間には、軸方向の隙間ＣＬが形成されている。軸方向の隙間ＣＬは、第２係合部１１Ｂのうち、周方向に延びる部分の全域と、保持部１２の連結片１２Ａと、の間に形成されている。図４に示すように、軸方向から見た平面視で、操作部１４Ａ，１４Ｂは、挿通孔１２Ｃの中心から９０度以内にある。さらには、係合部１１Ａ，１１Ｂも９０度以内にある。 As shown in FIGS. 4 and 5, the second engaging portion 11 B is formed integrally with the reinforcing rib 16. An axial gap CL is formed between the second engagement portion 11B and the holding portion 12. The axial gap CL is formed between the entire area of the second engaging portion 11B extending in the circumferential direction and the connecting piece 12A of the holding portion 12. As shown in FIG. 4, the operation portions 14A and 14B are within 90 degrees from the center of the insertion hole 12C in a plan view as viewed from the axial direction. Furthermore, the engaging portions 11A and 11B are also within 90 degrees.

以上説明したように、本実施形態に係るクランプ部材１Ｂでは、第２係合部１１Ｂおよび保持部１２の周方向の位置が互いに同等である。また、保持部１２は、電気融着継手２の給電端子２２を保持するため、電気融着継手２の上側に位置している。このため、第１係合部１１Ａが、水平方向に延びる姿勢となりやすく、一対の係合部１１Ａ，１１Ｂ同士を相対変位させる作業を容易に行うことができる。
また、第２係合部１１Ｂおよび保持部１２の周方向の位置が同等であるため、一対の係合部１１Ａ，１１Ｂが水平方向にかさ張るのを抑えることができる。また、受け側の係合部１１Ｂは、挿し側の係合部１１Ａより上側となるので、差込みやすい。 As described above, in the clamp member 1B according to the present embodiment, the circumferential positions of the second engagement portion 11B and the holding portion 12 are equal to each other. The holding portion 12 is positioned above the electrofusion joint 2 in order to hold the power supply terminal 22 of the electrofusion joint 2. For this reason, 11 A of 1st engaging parts are easy to become the attitude | position extended in a horizontal direction, and the operation | work which carries out relative displacement of a pair of engaging parts 11A and 11B can be performed easily.
Moreover, since the position of the circumferential direction of the 2nd engaging part 11B and the holding | maintenance part 12 is equivalent, it can suppress that a pair of engaging part 11A, 11B is bulky in a horizontal direction. Also, the receiving-side engaging portion 11B is located above the insertion-side engaging portion 11A, so that it is easy to insert.

また、第２係合部１１Ｂと保持部１２との間に軸方向の隙間ＣＬが形成されている。このため、一対の係合部１１Ａ，１１Ｂそれぞれにおける各係合歯１３Ａ，１３Ｂ同士を互いに係合させた際に、それぞれの係合部１１Ａ，１１Ｂを変位しやすくすることで、円滑に各係合歯１３Ａ，１３Ｂ同士を係合させることができる。 Further, an axial gap CL is formed between the second engaging portion 11B and the holding portion 12. For this reason, when each engaging tooth 13A, 13B in each of a pair of engaging part 11A, 11B is mutually engaged, each engaging part 11A, 11B is made easy to displace, and each engagement is smoothly carried out. The teeth 13A and 13B can be engaged with each other.

（第３実施形態）
次に、本発明の第３実施形態について、図６および図７を参照して説明する。本実施形態によるクランプ部材１Ｃは、第２実施形態によるクランプ部材１Ｂと基本構成を同一にしている。そのため、本実施形態によるクランプ部材１Ｃは、第２実施形態と同一の構成については同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図６において、本実施形態によるクランプ部材１Ｃは、第２係合部１１Ｂにおいて径方向外側に突出する第２操作部１４Ｂを有していない。下面側に第２係合歯１３Ｂを有する所定厚みの第２係合部１１Ｂが、締付帯部１０の周方向に沿って第１係合部１１Ａ方向に円弧状に延びて先端面１４Ｃで仕切られている。第２係合部１１Ｂは第２操作部１４Ｂを兼用している。そのため、第１操作部１４Ａと第２係合部１１Ｂをペンチ等の工具で締めることで、締付帯部１０を弾性変形させて縮径させて係合歯１３Ａ、１３Ｂ同士を係合させることができる。 (Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. The clamp member 1C according to the present embodiment has the same basic configuration as the clamp member 1B according to the second embodiment. Therefore, 1 C of clamp members by this embodiment attach the same code | symbol about the structure same as 2nd Embodiment, the description is abbreviate | omitted, and only a different point is demonstrated.
In FIG. 6, the clamp member 1 C according to the present embodiment does not have the second operation portion 14 B protruding outward in the radial direction in the second engagement portion 11 B. A second engagement portion 11B having a predetermined thickness having second engagement teeth 13B on the lower surface side extends in an arc shape in the direction of the first engagement portion 11A along the circumferential direction of the fastening band portion 10, and is partitioned by the distal end surface 14C. It has been. The second engagement portion 11B also serves as the second operation portion 14B. Therefore, by tightening the first operating portion 14A and the second engaging portion 11B with a tool such as pliers, the fastening band portion 10 can be elastically deformed and reduced in diameter to engage the engaging teeth 13A and 13B. it can.

なお、上述した第３実施形態によるクランプ部材１Ｃにおいて、上述した構成とは逆に、第２係合部１１Ｂに第２操作部１４Ｂを設け、第１係合部１１Ａに第１操作部を設けない構成を採用してもよい。この場合でも、締付帯部１０から第１係合部１１Ａに向けて外周面が径方向外側に起立するように起立部を形成すれば、この起立部と第２操作部１４Ｂとを操作できる。 In the clamp member 1C according to the third embodiment described above, the second operating portion 14B is provided in the second engaging portion 11B, and the first operating portion is provided in the first engaging portion 11A, contrary to the configuration described above. A configuration without this may be adopted. Even in this case, if the standing portion is formed so that the outer peripheral surface stands radially outward from the fastening band portion 10 toward the first engaging portion 11A, the standing portion and the second operation portion 14B can be operated.

また、第１係合部１１Ａの先端部には、その側面に軸ずれ防止用の突起部材２５が一体形成されている。突起部材２５は、第２係合部１１Ｂと保持部１２の連結片１２Ａとの間に形成された隙間ＣＬに対向する位置に設置されている。しかも、突起部材２５の厚みは隙間ＣＬの幅より小さく形成されている。この突起部材２５を隙間ＣＬ側にかしめることで、第２係合部１１Ｂと連結片１２Ａとの間の隙間ＣＬ内に延びた形状にすることができる。
これにより、クランプ部材１Ｃで締付帯部１０に挿入された樹脂管１００を締め付けて固定する際、操作部１４Ａと第２係合部１１Ｂを操作して第１係合部１１Ａを案内部１０Ａと第２係合部１１Ｂの間に挿入する。その際、突起部材２５が隙間ＣＬにガイドされて進入することで、第１係合部１１Ａと第２係合部１１Ｂとが相対的に中心軸線Ｏ方向にずれることを防止できる。そのため、図７に示すように、係合歯１３Ａと係合歯１３Ｂの係合を確実に行え、係合歯１３Ａと係合歯１３Ｂが噛合する面積が十分確保されるため、安定して樹脂管１００をクランプできる。 In addition, a protruding member 25 for preventing axial deviation is integrally formed on the side surface of the distal end portion of the first engaging portion 11A. The protruding member 25 is disposed at a position facing the gap CL formed between the second engaging portion 11B and the connecting piece 12A of the holding portion 12. Moreover, the thickness of the protruding member 25 is smaller than the width of the gap CL. By caulking the protruding member 25 toward the gap CL, the protruding member 25 can be shaped to extend into the gap CL between the second engagement portion 11B and the connecting piece 12A.
Thus, when the resin tube 100 inserted into the fastening band portion 10 is clamped and fixed by the clamp member 1C, the first engaging portion 11A and the guide portion 10A are operated by operating the operating portion 14A and the second engaging portion 11B. It inserts between the 2nd engaging parts 11B. At this time, the protrusion member 25 is guided by the gap CL and enters, so that the first engagement portion 11A and the second engagement portion 11B can be prevented from being relatively displaced in the direction of the central axis O. Therefore, as shown in FIG. 7, the engagement teeth 13A and the engagement teeth 13B can be reliably engaged, and an area where the engagement teeth 13A and the engagement teeth 13B are engaged is sufficiently secured. The tube 100 can be clamped.

なお、突起部材２５は、予め第２係合部１１Ｂと保持部１２の連結片１２Ａとの間の隙間ＣＬに延ばして形成してもよい。この場合でも、係合歯１３Ａと係合歯１３Ｂは突起部材２５にガイドされて係合位置に相対移動できる。しかも、突起部材２５をかしめる必要がない。
また、突起部材２５は第１係合部１１Ａに代えて第２係合部１１Ｂの先端部の側面に形成されていてもよい。この場合でも、突起部材２５が標準状態で第１係合部１１Ａの側面に重なる位置に設ける構成とすれば、かしめる必要はない。また、突起部材２５は第１係合部１１Ａまたは第２係合部１１Ｂの隙間ＣＬと反対側の側面に設けてもよい。 The protruding member 25 may be formed by extending in advance to the gap CL between the second engaging portion 11B and the connecting piece 12A of the holding portion 12. Even in this case, the engaging teeth 13A and the engaging teeth 13B are guided by the protruding members 25 and can be relatively moved to the engaging positions. Moreover, it is not necessary to caulk the protruding member 25.
Further, the protruding member 25 may be formed on the side surface of the distal end portion of the second engaging portion 11B instead of the first engaging portion 11A. Even in this case, if the protruding member 25 is provided at a position overlapping the side surface of the first engaging portion 11A in the standard state, there is no need for caulking. Further, the protruding member 25 may be provided on the side surface opposite to the gap CL of the first engaging portion 11A or the second engaging portion 11B.

図８及び図９は上述した各実施形態によるクランプ部材１、１Ｂ、１Ｃ及び電気融着継手２の変形例を示すものである。これを第３実施形態によるクランプ部材付き電気融着継手３を例にとって以下に説明する。
図８に示す電気融着継手２において、給電端子２２の外周面に突部２２Ａを設けてもよい。突部２２Ａは給電端子２２の外周面の下端部に形成することが好ましい。これにより、例えば図８に示すように、バーコード等のタグ２７を取り付けるリング２７Ａを給電端子２２に取り付ける際、突部２２Ａにリング２７Ａが係止するため外れにくい利点がある。 8 and 9 show modifications of the clamp members 1, 1B, 1C and the electrofusion joint 2 according to the above-described embodiments. This will be described below by taking the electrofusion joint 3 with the clamp member according to the third embodiment as an example.
In the electric fusion joint 2 shown in FIG. 8, a protrusion 22 A may be provided on the outer peripheral surface of the power supply terminal 22. The protrusion 22 A is preferably formed at the lower end of the outer peripheral surface of the power supply terminal 22. Thus, for example, as shown in FIG. 8, when the ring 27A for attaching the tag 27 such as a barcode is attached to the power supply terminal 22, there is an advantage that the ring 27A is locked to the protruding portion 22A and is not easily detached.

また、図９に示すように、給電端子２２を挿入する保持部１２の挿通孔１２Ｃには、給電端子２２の突部２２Ａを嵌合させる溝状の切欠部１２Ｄを形成することが好ましい。これによって、給電端子２２をクランプ部材１Ｃの保持部１２の挿通孔１２Ｃに挿入させる際、突部２２Ａを切欠部１２Ｄに挿入させることができるので、保持部１２が外れにくく見栄えが良いという利点がある。 Further, as shown in FIG. 9, it is preferable to form a groove-shaped notch 12 D into which the protrusion 22 A of the power supply terminal 22 is fitted in the insertion hole 12 C of the holding portion 12 into which the power supply terminal 22 is inserted. Thus, when the power feeding terminal 22 is inserted into the insertion hole 12C of the holding portion 12 of the clamp member 1C, the protrusion 22A can be inserted into the cutout portion 12D, so that the holding portion 12 is not easily detached and has an advantage of good appearance. is there.

（第４実施形態）
次に、本発明の第４実施形態について、図１０から図１３を参照して説明する。
上述した各実施形態によるクランプ部材１、１Ｂ、１Ｃにおいて、第１係合部１１Ａの係合歯１３Ａと第２係合部１１Ｂの係合歯１３Ｂを係合させるには、先端側の係合歯１３Ａ、１３Ｂ同士のクランプは手動等、小さな力で仮締めを行い、その後のクランプはペンチ等の工具を用いて大きな力で係合させて全体をかしめて本締め(仮固定)する。複数の係合歯１３Ａ、１３Ｂ同士における先端側の１山目の係合歯１３Ａ、１３Ｂ同士の係合は工具を使用しないで、作業者の手動でできることが締め付け作業をスムーズに行う上で望ましい。 (Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS.
In the clamp members 1, 1 B, and 1 C according to the above-described embodiments, the engagement on the distal end side is used to engage the engagement teeth 13 A of the first engagement portion 11 A and the engagement teeth 13 B of the second engagement portion 11 B. The clamps between the teeth 13A and 13B are temporarily tightened with a small force such as manual operation, and the subsequent clamps are engaged with a large force using a tool such as pliers, and the whole is crimped and temporarily tightened (temporarily fixed). The engagement of the first engagement teeth 13A and 13B on the distal end side among the plurality of engagement teeth 13A and 13B is desirable for smooth tightening by an operator's manual operation without using a tool. .

ところで、第１係合部１１Ａの係合歯１３Ａと第２係合部１１Ｂの係合歯１３Ｂを係合させる際、締付帯部１０の口径が大きくなるとカシメ戻りがないように各係合歯１３Ａ、１３Ｂの山高さを高くすることが必要になる。一方で、作業者の手動によって先端側の係合歯１３Ａ、１３Ｂ同士を係合させる力には限界がある。そのため、複数の係合歯１３Ａ，１３Ｂ同士が同一形状の山高さであると、山高さが大きくなると最初の係合歯１３Ａ、１３Ｂ同士の手動による係合が困難になる。
本実施形態によるクランプ部材１Ｄは、このような問題をも解決できるようしたものであり、上述した実施形態の部材、部品と同一または同様なものは同一符号を用いて説明する。 By the way, when engaging the engagement teeth 13A of the first engagement portion 11A and the engagement teeth 13B of the second engagement portion 11B, the engagement teeth are set so that there is no caulking return when the diameter of the fastening band portion 10 is increased. It is necessary to increase the peak height of 13A and 13B. On the other hand, there is a limit to the force with which the engaging teeth 13A and 13B on the distal end side can be manually engaged by the operator. Therefore, when the plurality of engaging teeth 13A and 13B have the same height, the first engaging teeth 13A and 13B are difficult to engage manually.
The clamp member 1D according to the present embodiment can solve such a problem, and the same or similar members and parts as those of the above-described embodiment will be described using the same reference numerals.

図１０に示す本第４実施形態によるクランプ部材１Ｄでは、略Ｃ字状の締付帯部１０の両端部に設けた第１係合部１１Ａの複数の係合歯１３Ａと第２係合部１１Ｂの複数の係合歯１３Ｂとが互いに係合可能である。本実施形態では、図１１、図１２に示すように、第１係合部１１Ａにおける先端側から後端側の係合歯１３Ａを便宜的に１３Ａａ、１３Ａｂ、１３Ａｃ、…とし、第２係合部１１Ｂにおける先端側から後端側の係合歯１３Ｂを便宜的に１３Ｂａ、１３Ｂｂ、１３Ｂｃ、…とする。
そして、第１係合部１１Ａの複数の係合歯１３Ａａ、１３Ａｂ、１３Ａｃ、…における先端側の１山目の係合歯１３Ａａは後続の２山目以降の係合歯１３Ａｂ、１３Ａｃ、…より高さを低く形成した。例えば、２山目以降の係合歯１３Ａｂ，１３Ａｃ、…の山高さを１ｍｍとして、１山目の係合歯１３Ａａの山高さをその１/２の０．５ｍｍに形成した。なお、第２係合部１１Ｂの係合歯１３Ｂａ、１３Ｂｂ、１３Ｂｃの山高さは同一でよい。また、１山目の係合歯１３Ａａの山高さは他の係合歯１３Ａｂ、…の１/２の高さに限定されることなく、適宜の割合に形成してよい。 In the clamp member 1D according to the fourth embodiment shown in FIG. 10, a plurality of engagement teeth 13A and a second engagement portion 11B of the first engagement portion 11A provided at both ends of the substantially C-shaped fastening band portion 10. The plurality of engaging teeth 13B can be engaged with each other. In this embodiment, as shown in FIGS. 11 and 12, the engagement teeth 13A from the front end side to the rear end side in the first engagement portion 11A are referred to as 13Aa, 13Ab, 13Ac,. For the sake of convenience, the engagement teeth 13B from the front end side to the rear end side in the portion 11B are referred to as 13Ba, 13Bb, 13Bc,.
The first engagement teeth 13Aa on the distal end side of the plurality of engagement teeth 13Aa, 13Ab, 13Ac,... Of the first engagement portion 11A are the following engagement teeth 13Ab, 13Ac,. The height was formed low. For example, the crest height of the engagement teeth 13Ab, 13Ac,... After the second crest is 1 mm, and the crest height of the engagement teeth 13Aa of the first crest is formed to 0.5 mm of 1/2. In addition, the peak heights of the engagement teeth 13Ba, 13Bb, and 13Bc of the second engagement portion 11B may be the same. Further, the height of the first engagement teeth 13Aa is not limited to the height of 1/2 of the other engagement teeth 13Ab, but may be formed at an appropriate ratio.

そのため、作業者が第１係合部１１Ａと第２係合部１１Ｂを係合させる際、第１係合部１１Ａの最初の係合歯１３Ａａは山高さが低いため、比較的小さな力で第２係合部１１Ｂの最初の係合歯１３Ｂａと手動で係合できる。その後は、工具を用いて係合させるため、山高さが大きくても係合歯１３Ａａ、１３Ａｂ、１３Ａｃ、…と係合歯１３Ｂａ、１３Ｂｂ、１３Ｂｃ、…を大きな力で係合させることができる。手動で係合歯１３Ａａと係合歯１３Ｂａとを係合すると操作部１４Ａ、１４Ｂが位置決めされるので、ペンチ等で容易に操作部１４Ａ、１４Ｂを締めることができる。 Therefore, when the worker engages the first engagement portion 11A and the second engagement portion 11B, the first engagement teeth 13Aa of the first engagement portion 11A have a low peak height, and therefore the first engagement teeth 13Aa are relatively small in force. 2 The first engaging tooth 13Ba of the engaging portion 11B can be manually engaged. After that, since it is engaged using a tool, the engaging teeth 13Aa, 13Ab, 13Ac,... And the engaging teeth 13Ba, 13Bb, 13Bc,. When the engaging teeth 13Aa and the engaging teeth 13Ba are manually engaged, the operation portions 14A and 14B are positioned. Therefore, the operation portions 14A and 14B can be easily tightened with pliers or the like.

図１２は第１係合部１１Ａの１山目の係合歯１３Ａａに代えて、第２係合部１１Ｂの１山目の係合歯１３Ｂａを２山目以降の係合歯１３Ｂｂ、…の山高さ(例えば１ｍｍ)より低く、例えば１/２の高さ（例えば５ｍｍ）に形成したものである。この場合でも同様に、第１係合部１１Ａの１山目の係合歯１３Ａａと第２係合部１１Ｂの１山目の係合歯１３Ｂａを手動の小さな力で係合でき、その後の係合は工具を用いて大きな力で行うことができる。
或いは、第１係合部１１Ａの１山目の係合歯１３Ａａと第２係合部１１Ｂの１山目の係合歯１３Ｂａの両方を、それぞれ２山目以降の係合歯１３Ａｂ、…、係合歯１３Ｂｂ、…より低く形成してもよい。この場合には各係合歯１３Ａａ、１３Ｂａの山高さは他の山高さの１/２より大きく形成することが、係合を確実にするために好ましい。 In FIG. 12, instead of the first tooth 13Aa of the first engaging portion 11A, the first tooth 13Ba of the second engaging portion 11B is replaced with the second and subsequent engaging teeth 13Bb,. The height is lower than the peak height (for example, 1 mm), for example, 1/2 height (for example, 5 mm). Similarly in this case, the engagement tooth 13Aa of the first mountain of the first engagement portion 11A and the engagement tooth 13Ba of the first mountain of the second engagement portion 11B can be engaged with a small manual force, and the subsequent engagement Can be done with a large force using a tool.
Alternatively, both the engagement teeth 13Aa of the first crest of the first engagement portion 11A and the engagement teeth 13Ba of the first crest of the second engagement portion 11B are respectively connected to the engagement teeth 13Ab of the second crest and later. The engagement teeth 13Bb, ... may be formed lower. In this case, it is preferable to form the peak height of each engagement tooth 13Aa, 13Ba larger than 1/2 of the other peak heights in order to ensure the engagement.

第４実施形態によるクランプ部材１Ｄについて図１１の構成で試験した。
他の実施形態のクランプ部材１，１Ｂ、１Ｃ等では、第１係合部１１Ａの複数の係合歯１３Ａと第２係合部１１Ｂの複数の係合歯１３Ｂが略同一山高さ（１ｍｍ）であった。この場合、１山目の係合歯１３Ａと係合歯１３Ｂ同士の係合力を計測すると１５０Ｎであり、手動で係合できる係合力の限界である約１００Ｎを超える力を要していた。
これに対し、本第４実施形態によるクランプ部材１Ｄでは、最初の係合歯１３Ａａと係合歯１３Ｂａの手動による係合は８０Ｎの力で係合できた。そのため、第１係合部１１Ａの複数の係合歯１３Ａと第２係合部１１Ｂの複数の係合歯１３Ｂの山高さに関わらず、最初の係合歯１３Ａａと係合歯１３Ｂ同士をスムーズに仮締めできる。 The clamp member 1D according to the fourth embodiment was tested with the configuration of FIG.
In the clamp members 1, 1B, 1C, etc. of other embodiments, the plurality of engagement teeth 13A of the first engagement portion 11A and the plurality of engagement teeth 13B of the second engagement portion 11B are substantially the same height (1 mm). Met. In this case, when the engagement force between the engagement teeth 13A and the engagement teeth 13B of the first mountain is measured, it is 150 N, and a force exceeding about 100 N which is the limit of the engagement force that can be manually engaged is required.
On the other hand, in the clamp member 1D according to the fourth embodiment, the first manual engagement of the engaging teeth 13Aa and the engaging teeth 13Ba can be engaged with a force of 80N. Therefore, the first engagement teeth 13Aa and the engagement teeth 13B can be smoothly connected regardless of the height of the plurality of engagement teeth 13A of the first engagement portion 11A and the plurality of engagement teeth 13B of the second engagement portion 11B. Can be temporarily tightened.

なお、本発明の技術的範囲は前記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

例えば、上記実施形態においては、一対の係合部１１Ａ，１１Ｂに、操作部１４Ａ，１４Ｂがそれぞれ、または一方に設けられている構成を示したが、このような態様に限られない。一対の係合部１１Ａ，１１Ｂに操作部１４Ａ，１４Ｂが設けられなくてもよい。また、上記実施形態においては、締付帯部１０の内周面に突起部１５が形成された構成を示したが、このような態様に限られない。締付帯部１０の内周面に、突起部１５が形成されなくてもよい。 For example, in the said embodiment, although the operation parts 14A and 14B were each provided in the pair of engaging parts 11A and 11B, or one side was shown, it is not restricted to such an aspect. The operation parts 14A and 14B may not be provided in the pair of engaging parts 11A and 11B. Moreover, in the said embodiment, although the structure in which the projection part 15 was formed in the internal peripheral surface of the fastening belt | band | zone part 10 was shown, it is not restricted to such an aspect. The protrusion 15 does not have to be formed on the inner peripheral surface of the fastening band 10.

また、上記実施形態においては、電気融着継手２の開口端縁に当接する連結片１２Ａの軸方向の大きさＬ１が、３ｍｍ以上である構成を示したが、このような態様に限られない。連結片１２Ａの軸方向の大きさＬ１は、３ｍｍ未満であってもよい。
また、上記実施形態においては、締付帯部１０における一方側の端部のうち、中心軸線Ｏを径方向に挟む連結片１２Ａの反対側に位置する部分に、突出片１７が形成されている構成を示したが、このような態様に限られない。締付帯部１０における一方側の端部のうち、中心軸線Ｏを径方向に挟む連結片１２Ａの反対側に位置する部分に、突出片１７が形成されなくてもよい。 Moreover, in the said embodiment, although the magnitude | size L1 of the axial direction of 12 A of connection pieces contact | abutted to the opening edge of the electrofusion joint 2 showed 3 mm or more, it was not restricted to such an aspect. . The size L1 in the axial direction of the connecting piece 12A may be less than 3 mm.
Moreover, in the said embodiment, the protrusion piece 17 is formed in the part located in the other side of the connection piece 12A which pinches | interposes the center axis line O in the radial direction among the edge parts of the one side in the fastening belt | band | zone part 10. FIG. However, the present invention is not limited to such a mode. The protruding piece 17 does not need to be formed in the portion located on the opposite side of the connecting piece 12A that sandwiches the central axis O in the radial direction among the one end portion of the fastening band portion 10.

その他、本発明の趣旨に逸脱しない範囲で、前記実施形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記した変形例を適宜組み合わせてもよい。 In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the gist of the present invention, and the above-described modified examples may be appropriately combined.

１、１Ｂ、１Ｃクランプ部材
２電気融着継手
３クランプ部材付き電気融着継手
１０締付帯部
１１Ａ第１係合部（係合部）
１１Ｂ第２係合部（係合部）
１２保持部
１２Ａ連結片
１２Ｄ切欠部
１３Ａ第１係合歯（係合歯）
１３Ｂ第２係合歯（係合歯）
１４Ａ第１操作部（操作部）
１４Ｂ第２操作部（操作部）
１５突起部
１７突出片
２２給電端子
２２Ａ突部
２５突起部材
１００樹脂管
ＣＬ隙間 DESCRIPTION OF SYMBOLS 1, 1B, 1C Clamp member 2 Electric fusion joint 3 Electric fusion joint with a clamp member 10 Fastening belt | band | zone part 11A 1st engaging part (engaging part)
11B 2nd engaging part (engaging part)
12 holding part 12A connection piece 12D notch part 13A 1st engagement tooth (engagement tooth)
13B Second engaging tooth (engaging tooth)
14A 1st operation part (operation part)
14B 2nd operation part (operation part)
15 Projection 17 Projection Piece 22 Feed Terminal 22A Projection 25 Projection Member 100 Resin Pipe CL Clearance

Claims

A resin clamp member that fixes a resin pipe made of thermoplastic resin and an electric fusion joint to which the resin pipe is connected by thermal fusion,
With the resin tube inserted inside, a tightening band that can be reduced in diameter so as to hold the resin tube;
A pair of engaging parts that maintain a reduced diameter state of the fastening band part by engaging each other in a circumferential direction that circulates around a central axis of the fastening band part;
A holding portion that is connected to the tightening band portion and holds a power supply terminal of the electric fusion joint, wherein the pair of engaging portions are formed with engaging teeth that can be engaged with each other. A clamp member.

2. The clamp according to claim 1, wherein at least one of the pair of engaging portions is provided with an operation portion that protrudes outward in a radial direction perpendicular to the axial direction along the central axis. Element.

3. The clamp member according to claim 1, wherein a projecting portion that protrudes in a radial direction orthogonal to the axial direction along the central axis is formed on an inner peripheral surface of the fastening band portion. 4. .

The holding portion includes a connecting piece that is connected to an end portion in the axial direction along the central axis line in the fastening band portion and abuts on an opening edge of the electrofusion joint,
The clamp member according to any one of claims 1 to 3, wherein a size of the connecting piece in the axial direction is 3 mm or more.

The holding portion includes a connecting piece that is connected to an end portion on one side in the axial direction along the central axis in the fastening band portion, and abuts against an opening edge of the electrofusion joint,
A projecting piece projecting in the axial direction is formed in a portion located on the opposite side of the connecting piece that sandwiches the central axis in the radial direction among the end portions on the one side. The clamp member according to any one of claims 1 to 4.

6. The clamp member according to claim 1, wherein positions in the circumferential direction in any one of the pair of engaging portions and in each of the holding portions are equal to each other. .

The clamp member according to claim 6, wherein an axial gap along the central axis is formed between the one of the pair of engaging portions and the holding portion. .

The other of the pair of engaging portions is formed with a protruding member that prevents one of the pair of engaging portions from relatively shifting in the axial direction along the central axis direction. The clamp member according to any one of claims 1 to 7.

The holding portion is formed with an insertion hole for inserting a power supply terminal of the electric fusion joint, and the insertion hole is formed with a notch for inserting a protrusion provided on the power supply terminal. The clamp member according to any one of claims 1 to 8.

An electric fusion joint in which a resin pipe made of thermoplastic resin is connected by thermal fusion;
An electrofusion joint with a clamp member, comprising: the clamp member according to claim 1.