JP5755131B2 - Wire clamp - Google Patents

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JP5755131B2
JP5755131B2 JP2011274019A JP2011274019A JP5755131B2 JP 5755131 B2 JP5755131 B2 JP 5755131B2 JP 2011274019 A JP2011274019 A JP 2011274019A JP 2011274019 A JP2011274019 A JP 2011274019A JP 5755131 B2 JP5755131 B2 JP 5755131B2
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wire
electric wire
clamp body
clamp
insertion hole
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JP2013126306A (en
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育宏 深田
育宏 深田
健介 米枡
健介 米枡
光司 岩田
光司 岩田
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Sanwa Tekki Corp
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Sanwa Tekki Corp
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Description

本発明は、鋼心アルミより線から成る送電線等の電線の延線工事において電線を引き留めて、これを引き回す牽引ワイヤに接続するための延線クランプに関するものである。   The present invention relates to a wire drawing clamp for securing an electric wire and connecting it to a pulling wire for routing the wire in a wire drawing work such as a power transmission line made of a steel core aluminum wire.

従来、電力ケーブルの先端部に取り付けられるくさび式延線クランプであって、くさび部材を導体先端から差し込んで導体を拡径し、円筒状の本体部材をケーブルの導体端部周りに取り囲ませ、ケーブルの先端部へ向けて導体上を移動させることにより締め付け、この本体部材の先端部に、牽引用のワイヤを接続するキャップ部材を取り付けるものがある(特許文献1参照)。
また、電線の端部の鋼心の外周上に圧縮固定される鋼クランプと,電線のアルミ線部から鋼クランプの外周にわたって被せ、圧縮により鋼クランプに固定されるアルミスリーブとを備えた圧縮式引留クランプがある(特許文献2の図23参照)。
さらに、鋼心線をくさび部材で把持して鋼クランプのテーパ孔に挿入し、鋼クランプをアルミより線にかけてアルミスリーブで一体に圧縮する圧縮くさび式延線クランプがある。
引留クランプのアルミスリーブの口元部のアルミより線を保護するために、アルミスリーブの口元部の電線外周に装着する弾性合成樹脂製の電線保護カバーがある(特許文献3参照)。
Conventionally, it is a wedge-type wire extension clamp attached to the tip of a power cable, the wedge member is inserted from the tip of the conductor to expand the diameter of the conductor, and the cylindrical body member is surrounded around the conductor end of the cable. There is a type in which a cap member for connecting a pulling wire is attached to the distal end portion of the main body member by tightening by moving on the conductor toward the distal end portion (see Patent Document 1).
Also, a compression type provided with a steel clamp that is compressed and fixed on the outer periphery of the steel core at the end of the electric wire, and an aluminum sleeve that covers the outer periphery of the steel clamp from the aluminum wire portion of the electric wire and is fixed to the steel clamp by compression. There is a retaining clamp (see FIG. 23 of Patent Document 2).
Further, there is a compression wedge type wire extension clamp in which a steel core wire is gripped by a wedge member and inserted into a taper hole of the steel clamp, and the steel clamp is applied to the wire from the aluminum and compressed together with an aluminum sleeve.
In order to protect the wire from the aluminum at the mouth portion of the aluminum sleeve of the retention clamp, there is a wire protective cover made of elastic synthetic resin that is attached to the outer periphery of the wire at the mouth portion of the aluminum sleeve (see Patent Document 3).

特開平11-069538JP 11-069538 A 特開平9-065557JP 9-065557 特開平9-266618JP-A-9-266618

上記従来の各延線クランプは、延線工事における金車通過時に円筒状本体部材又はアルミスリーブの口元部分で電線が屈曲するため、アルミスリーブの口元に電線が押し当てられ、アルミ素線が破損することがある。これに対して、電線保護カバーを装着するには、対応する取付け部を形成しなければならず、構造的にコスト高になる。
そこで、本発明は、金車通過時に鋼心アルミより線のアルミ素線へのダメージを低減し、また容易に装着でき、簡易構造で安価な延線クランプを提供することを課題とする。
In each of the above conventional wire clamps, the wire bends at the mouth of the cylindrical body member or the aluminum sleeve when passing through the gold wheel during wire drawing work, so the wire is pressed against the mouth of the aluminum sleeve and the aluminum wire is damaged. There are things to do. On the other hand, in order to mount the electric wire protection cover, a corresponding mounting portion must be formed, resulting in a high cost in terms of structure.
Accordingly, an object of the present invention is to provide a wire-drawing clamp that has a simple structure and is inexpensive, capable of reducing damage to the aluminum strand of the steel core aluminum wire when passing through the gold wheel.

本発明においては、上記課題を解決するため、鋼心アルミより線から成る電線Eの端部に固定され、牽引ワイヤに接続する延線クランプ1において、電線Eを圧縮接続するクランプ本体2の一端部に牽引ワイヤを接続するための引手2aを、他端に電線Eの端部が挿入されるより線挿入穴2bを、中間部により線挿入穴2bから挿入されたアルミより線E2から延長する鋼心線E1を挿入する鋼心線挿入穴2cを設ける。クランプ本体2は、鋼心線E1を圧縮固定する圧縮領域P1と、アルミより線E2を圧縮領域P1より緩く圧縮し、金車通過時の金車に沿った電線E2の湾曲による内外のアルミ素線の相対変位を許容する半圧縮領域P2と、より線挿入穴2bの口元部に圧縮しない非圧縮領域P3とを有する。クランプ本体2に挿入された電線Eのクランプ本体2の隣接部分周りに緩衝部材を被覆し、金車通過時に金車に沿ってクランプ本体2に対して傾斜させ、クランプ本体2の口元部の電線の屈曲を緩和する。
緩衝部材を合成樹脂製の弾性カバー3で構成し、電線Eと共にクランプ本体2のより線挿入穴2bに挿入し、弾性カバー3によってアルミより線E2に対する圧縮を緩和する一方、アルミより線E2をクランプ本体2から抜け止めする半圧縮領域P2を形成する。
緩衝部材は、クランプ本体6に隣接して圧縮され電線E上に固定される一つ又は電線方向に並ぶ互いに傾斜可能な複数の保護リング7で構成する。
緩衝部材に隣接して、緩衝部材の電線方向のずれを阻止する固定リング4,8のような固定手段を設ける。
In the present invention, in order to solve the above-mentioned problem, one end of a clamp body 2 that compresses and connects the electric wire E in the wire clamp 1 that is fixed to the end portion of the electric wire E made of a steel core aluminum wire and connected to the pulling wire. The pull handle 2a for connecting the pulling wire to the part, the strand insertion hole 2b into which the end of the electric wire E is inserted into the other end, and the aluminum inserted from the wire insertion hole 2b through the intermediate portion from the wire E2 are extended. A steel core wire insertion hole 2c for inserting the steel core wire E1 is provided. The clamp body 2 includes a compression region P1 for compressing and fixing the steel core wire E1, and an aluminum element inside and outside due to the bending of the electric wire E2 along the gold wheel when the wire passes through the gold wheel, and the aluminum wire E2 is compressed more loosely than the compression region P1. It has a semi-compression region P2 that allows relative displacement of the line, and an uncompressed region P3 that is not compressed at the mouth of the strand insertion hole 2b. A buffer member is covered around the adjacent portion of the clamp body 2 of the electric wire E inserted into the clamp body 2, and is inclined with respect to the clamp body 2 along the gold wheel when passing the gold wheel. Relieve bending.
The buffer member is composed of an elastic cover 3 made of synthetic resin, and is inserted into the stranded wire insertion hole 2b of the clamp body 2 together with the electric wire E. The elastic cover 3 relaxes the compression of the wire E2 from the aluminum, while the stranded wire E2 is A semi-compression region P2 that prevents the clamp body 2 from coming off is formed.
The buffer member is composed of one or a plurality of protective rings 7 which are compressed adjacent to the clamp body 6 and fixed on the electric wire E and which can be inclined with respect to each other in the electric wire direction.
Adjacent to the buffer member, fixing means such as fixing rings 4 and 8 for preventing the buffer member from shifting in the electric wire direction are provided.

本発明においては、鋼心アルミより線からなる電線の端部の鋼心線を圧縮領域において強固に固定して、十分な強度で接続する一方、電線が金車通過時にクランプ本体に対して傾斜して金車に沿って湾曲しても、緩衝部材により被覆されるので、クランプ本体の口元での電線の屈曲を緩和するし、非圧縮領域P3によりクランプ本体の口元に電線が押し当てられることもなく、しかも半圧縮領域において湾曲による外側のアルミ素線が引っ張りに応じて電線方向に移動し、金車を通過すれば復帰するので、アルミより線に無理な力が集中せず、アルミより線の素線切れを防止することができる。また、緩衝部材を圧縮するのでクランプ本体と間に特別な係合部を形成する必要がないので、簡易な構造で安価に提供することができるし、装着も容易に行うことができる。   In the present invention, the steel core wire at the end of the electric wire made of the steel core aluminum wire is firmly fixed in the compression region and connected with sufficient strength, while the electric wire is inclined with respect to the clamp body when passing the gold wheel Even if it is curved along the gold wheel, it is covered with the buffer member, so that the bending of the electric wire at the mouth of the clamp body is eased, and the electric wire is pressed against the mouth of the clamp body by the non-compressed region P3. In addition, in the semi-compression region, the outer aluminum wire due to bending moves in the direction of the electric wire according to the tension and returns when passing through the gold wheel, so that excessive force does not concentrate on the wire than aluminum, Wire breakage of the wire can be prevented. In addition, since the buffer member is compressed, there is no need to form a special engagement portion between the clamp body, so that it can be provided at a low cost with a simple structure and can be easily mounted.

本発明の第1実施例に係る延線クランプの正面図である。It is a front view of the wire clamp which concerns on 1st Example of this invention. 図1のクランプ本体の延線クランプの分解斜視図である。It is a disassembled perspective view of the wire extension clamp of the clamp main body of FIG. 本発明の第2実施例に係る延線クランプの正面図である。It is a front view of the wire clamp which concerns on 2nd Example of this invention. 図3のクランプ本体の延線クランプの分解斜視図である。It is a disassembled perspective view of the wire extension clamp of the clamp main body of FIG.

本発明の実施の一形態を図面を参照して説明する。
図1,図2において、延線クランプ1は、クランプ本体2と弾性カバー3と固定リング4とから構成される。クランプ本体2は円柱状鋼材から成り、一端部に電線の延線工事において電線を引き留めて引き回す牽引ワイヤを接続するための引手2aを備えている。クランプ本体2の他端部には、弾性カバー3を装着した鋼心アルミより線からなる電線Eの端部を突き合わせて挿入するための軸線方向のより線挿入穴2bを備えている。より線挿入穴2bに連続して、電線Eのアルミより線E2を段剥きして露出させた鋼心線E1を引手2aに向かって近傍位置まで挿入するためにより線挿入穴2bより小径に軸線上に設けられた鋼心線挿入穴2cを備えている。
An embodiment of the present invention will be described with reference to the drawings.
1 and 2, the wire clamp 1 includes a clamp body 2, an elastic cover 3, and a fixing ring 4. The clamp main body 2 is made of a cylindrical steel material, and has a handle 2a for connecting a pulling wire for pulling and drawing the electric wire in one end of the wire drawing work. The other end portion of the clamp body 2 is provided with a strand insertion hole 2b in the axial direction for abutting and inserting the end portion of the electric wire E made of a steel core aluminum wire to which the elastic cover 3 is attached. Continuously inserted into the wire insertion hole 2b, the steel core wire E1 stripped and exposed from the aluminum of the electric wire E is inserted to the near position toward the handle 2a, so that the shaft has a smaller diameter than the wire insertion hole 2b. The steel core wire insertion hole 2c provided on the wire is provided.

緩衝部材である弾性カバー3は、電線Eを挿入させる内径を有するウレタンのような弾性合成樹脂製管材で構成され、クランプ本体2のより線挿入穴2b及び鋼心線挿入穴2cの深さを合わせたものとほぼ同じ長さを有する。弾性カバー3は電線Eを挿入した状態で突き合わせた端部をクランプ本体2のより線挿入穴2bに挿入される。   The elastic cover 3 as a buffer member is made of an elastic synthetic resin tube material such as urethane having an inner diameter into which the electric wire E is inserted, and the depths of the strand insertion hole 2b and the steel core wire insertion hole 2c of the clamp body 2 are set. Has approximately the same length as the combined. The elastic cover 3 is inserted into the stranded wire insertion hole 2 b of the clamp body 2 at the end faced with the electric wire E inserted.

固定リング4は、電線Eの外径より大きな内径を有する環状鋼材から成る。固定リング4は、電線Eを貫通させて電線E上の弾性カバー3に隣接する位置に圧縮されて固定され、弾性カバー3の電線E上のすべりを阻止する固定手段となる。
なお、固定リング4は、弾性カバー3がクランプ本体2に圧縮固定されてクランプ本体2から抜け出ない程度の電線E上の移動がなければ設けなくてもよい。
また、固定リング4は、弾性カバー3の電線E上のすべりを阻止する固定手段であれば、これに代えて電線E上の弾性カバー3の隣接位置にテープやワイヤ等を巻くなどの簡易に装着できるものでもよい。
The fixing ring 4 is made of an annular steel material having an inner diameter larger than the outer diameter of the electric wire E. The fixing ring 4 is compressed and fixed at a position adjacent to the elastic cover 3 on the electric wire E through the electric wire E, and serves as a fixing means for preventing the elastic cover 3 from slipping on the electric wire E.
The fixing ring 4 may not be provided if the elastic cover 3 is compressed and fixed to the clamp body 2 and does not move on the electric wire E so as not to come out of the clamp body 2.
Further, if the fixing ring 4 is a fixing means for preventing the elastic cover 3 from slipping on the electric wire E, instead of this, a tape, a wire or the like can be easily wound around the elastic cover 3 on the electric wire E. It may be one that can be worn.

この延線クランプ1は、予め電線Eの端部のアルミより線E2を段剥きして、鋼心線E1をクランプ本体2の鋼心線挿入穴2cに合わせて露出させておき、この電線Eを固定リング4及び弾性カバー3に通し、鋼心線E1をクランプ本体2の鋼心線挿入穴2cに挿入すると共に弾性カバー3を電線Eと共により線挿入穴2bの突き当たりまで挿入する。次いで、クランプ本体2の口元部を除いた、鋼心線挿入穴2cからより線挿入穴2bにかけた外周の対応位置を引手2a側から軸線方向に複数回に分けて圧縮工具で圧縮し、クランプ本体2を電線Eに固定する。最後に弾性カバー3に固定リング4をあてがい固定リング4を圧縮工具で圧縮して電線Eに固定する。
延線クランプ1は、鋼心線E1を圧縮固定した圧縮領域P1により、延線作業に十分な強度で電線Eを接続する。弾性カバー3はアルミより線E2を被覆し、金車通過時にクランプ本体2に対して金車に沿って柔軟に湾曲するので、電線E自体の曲がりやクランプ本体2の口元での電線Eの屈曲を固定リング4と共に緩和するし、クランプ本体2の口元部に電線Eが押し当てられることもなく、電線Eに負担がかからない。クランプ本体2の口元部の非圧縮領域P3を除いた弾性カバー3の挿入部分には、弾性カバー3の弾性により圧縮領域P1より緩く圧縮された半圧縮領域P2が形成される。この半圧縮領域P2のアルミより線E2は、金車通過時に湾曲部外側のアルミ素線が電線方向に引っ張られるが、これに応じて移動し、また湾曲から復帰すると戻るのでアルミ素線に無理な引っ張り力が集中しない。固定リング4は電線E上での弾性カバー3の滑りを止めてクランプ本体2からの抜けを防止する。弾性カバー3はクランプ本体2に挿入されこれと共に電線Eに一体に圧縮固定されるので、クランプ本体2との特別な係合部を形成する必要がなく、係合操作も不要となる。
The wire clamp 1 is formed by stripping the wire E2 from the aluminum at the end of the electric wire E in advance and exposing the steel core wire E1 in accordance with the steel core wire insertion hole 2c of the clamp body 2. Is inserted through the fixing ring 4 and the elastic cover 3, the steel core wire E1 is inserted into the steel core wire insertion hole 2c of the clamp body 2, and the elastic cover 3 is inserted together with the electric wire E to the end of the wire insertion hole 2b. Next, the outer periphery corresponding position from the steel core wire insertion hole 2c to the wire insertion hole 2b, excluding the mouth portion of the clamp body 2, is divided into a plurality of times in the axial direction from the handle 2a side and compressed with a compression tool. The main body 2 is fixed to the electric wire E. Finally, the fixing ring 4 is applied to the elastic cover 3, and the fixing ring 4 is compressed with a compression tool and fixed to the electric wire E.
The wire clamp 1 connects the electric wire E with sufficient strength for wire drawing work by a compression region P1 in which the steel core wire E1 is compressed and fixed. The elastic cover 3 covers the wire E2 from the aluminum, and flexes along the gold wheel with respect to the clamp body 2 when passing through the gold wheel. Therefore, the wire E itself is bent or the wire E is bent at the mouth of the clamp body 2. Is relaxed together with the fixing ring 4, and the electric wire E is not pressed against the mouth portion of the clamp body 2, so that the electric wire E is not burdened. In the insertion portion of the elastic cover 3 excluding the non-compression region P3 in the mouth portion of the clamp body 2, a half-compression region P2 that is loosely compressed by the elasticity of the elastic cover 3 than the compression region P1 is formed. The aluminum strand E2 in the semi-compressed region P2 is pulled in the direction of the electric wire when passing through the gold wheel, but moves in response to this and returns when it returns from the curve. Tension is not concentrated. The fixing ring 4 prevents slipping of the elastic cover 3 on the electric wire E and prevents the elastic cover 3 from coming off from the clamp body 2. Since the elastic cover 3 is inserted into the clamp body 2 and is integrally compressed and fixed to the electric wire E together with the elastic cover 3, it is not necessary to form a special engagement portion with the clamp body 2, and an engagement operation is not necessary.

他の実施形態を図3,図4に示す。延線クランプ5におけるクランプ本体6は、先の実施形態と同様の牽引ワイヤを接続する引手6aと鋼心線E1を挿入する鋼心線挿入穴6cとを備えている。クランプ本体6のより線挿入穴6bは、電線Eの外径より大きな内径を有し、クランプ本体6を電線Eと共に圧縮すると電線Eを緩く圧縮することとなる。より線挿入穴6bの縁部には係合凹部6dを備えている。延線クランプ5は、先の実施形態における弾性カバー3に代えて電線E上に並ぶ複数の保護リング7を備える。緩衝部材である保護リング7は、クランプ本体6とほぼ同じ外径と電線Eを挿通させる内径とを有する。保護リング7の一端部には軸線方向に突出する係合凸部7aを、他端部には係合凸部7aに対応する係合凹部7bを有する。係合凸部7aはクランプ本体6の係合凹部6d又は隣接の保護リング7の係合凹部7bに嵌合し、クランプ本体6から電線E上を互いに係合しながら固定リング8まで並んで装着される。保護リング7は隣接のクランプ本体6又は他の保護リング7に対して傾斜し、金車通過時に互いにクランプ本体6に対して金車に沿って柔軟に湾曲する。固定リング8は、先の実施形態と同様に、電線Eの外径より大きな内径を有する環状鋼材から成る。
この延線クランプ5は、クランプ本体6の鋼心線挿入穴6cに対応する外周部分を軸線方向に複数回に分けて圧縮工具で圧縮し、クランプ本体6を電線Eに固定する。次にクランプ本体6及び保護リング7を互いに係合させて最後部に固定リング8をあてがい、圧縮工具で固定リング8を緩く圧縮して電線E上に保護リング7を固定する。
この延線クランプ5は、鋼心線E1を圧縮固定した圧縮領域P1により十分な強度で電線Eを接続する。保護リング7がクランプ本体6や他の保護リング7と係合凸部7a及び係合凹部6d,7bにより係合し互いに傾斜してアルミより線E2を被覆し、金車通過時にクランプ本体6に対して金車に沿って柔軟に湾曲するので、電線E自体の曲がりやクランプ本体6の口元での電線Eの屈曲を固定リング8と共に緩和するし、クランプ本体6の口元部に電線Eが押し当てられることもなく、電線Eに負担がかからない。クランプ本体6の非圧縮領域P3を除いた電線Eの挿入部分には、電線Eが圧縮領域P1より緩く圧縮される半圧縮領域P2を形成する。この半圧縮領域P2のアルミより線E2は、金車通過時に湾曲部外側のアルミ素線が電線方向に引っ張られるが、これに応じて移動し、また湾曲から復帰すると戻るので素線に無理な引っ張り力が集中しない。
Another embodiment is shown in FIGS. The clamp body 6 in the wire clamp 5 is provided with a pull handle 6a for connecting a pulling wire similar to the previous embodiment and a steel core wire insertion hole 6c for inserting the steel core wire E1. The strand insertion hole 6b of the clamp body 6 has an inner diameter larger than the outer diameter of the electric wire E, and when the clamp body 6 is compressed together with the electric wire E, the electric wire E is loosely compressed. An engaging recess 6d is provided at the edge of the strand insertion hole 6b. The extension clamp 5 includes a plurality of protective rings 7 arranged on the electric wire E instead of the elastic cover 3 in the previous embodiment. The protection ring 7 as a buffer member has an outer diameter that is substantially the same as that of the clamp body 6 and an inner diameter through which the electric wire E is inserted. One end portion of the protective ring 7 has an engaging convex portion 7a protruding in the axial direction, and the other end portion has an engaging concave portion 7b corresponding to the engaging convex portion 7a. The engaging projection 7a fits into the engaging recess 6d of the clamp body 6 or the engaging recess 7b of the adjacent protective ring 7 and is mounted side by side from the clamp body 6 to the fixing ring 8 while engaging each other on the electric wire E. Is done. The protection ring 7 is inclined with respect to the adjacent clamp body 6 or another protection ring 7, and is flexibly bent along the gold wheel with respect to the clamp body 6 when passing the gold wheel. The fixing ring 8 is made of an annular steel material having an inner diameter larger than the outer diameter of the electric wire E, as in the previous embodiment.
The wire clamp 5 fixes the clamp body 6 to the electric wire E by dividing the outer peripheral portion corresponding to the steel core wire insertion hole 6c of the clamp body 6 into a plurality of times in the axial direction and compressing it with a compression tool. Next, the clamp body 6 and the protective ring 7 are engaged with each other, the fixing ring 8 is applied to the rearmost part, and the fixing ring 8 is loosely compressed with a compression tool to fix the protective ring 7 on the electric wire E.
This wire clamp 5 connects the electric wire E with sufficient strength by the compression region P1 in which the steel core wire E1 is compressed and fixed. The protective ring 7 is engaged with the clamp body 6 and the other protective ring 7 by the engaging convex portion 7a and the engaging concave portions 6d and 7b, and is inclined to cover the wire E2 from the aluminum. On the other hand, since it bends flexibly along the gold wheel, the bending of the electric wire E itself and the bending of the electric wire E at the mouth of the clamp body 6 are eased together with the fixing ring 8, and the electric wire E is pushed to the mouth of the clamp body 6. The electric wire E is not burdened without being hit. A semi-compression region P2 in which the electric wire E is compressed more loosely than the compression region P1 is formed in the insertion portion of the electric wire E excluding the non-compression region P3 of the clamp body 6. The aluminum strand E2 in the semi-compressed region P2 is unreasonable for the strand because the aluminum strand outside the bending portion is pulled in the direction of the electric wire when passing through the gold wheel, but moves in response to this and returns when returning from the curvature. The tensile force is not concentrated.

1 延線クランプ
2 クランプ本体
2b より線挿入穴
2c 鋼心線挿入穴
3 弾性カバー
4 固定リング
5 延線クランプ
6 クランプ本体
6b より線挿入穴
6c 鋼心線挿入穴
6d 係合凹部
7 保護リング
7a 係合凸部
7b 係合凹部
8 固定リング
P1 圧縮領域
P2 半圧縮領域
P3 非圧縮領域
E 電線
E1 鋼心線
E2 アルミより線
DESCRIPTION OF SYMBOLS 1 Wire extension clamp 2 Clamp body 2b Strand insertion hole 2c Steel core wire insertion hole 3 Elastic cover 4 Fixing ring 5 Wire extension clamp 6 Clamp body 6b Strand insertion hole 6c Steel core wire insertion hole 6d Engaging recess 7 Protective ring 7a Engaging convex part 7b Engaging concave part 8 Fixing ring P1 Compression area P2 Semi-compression area P3 Non-compression area E Electric wire E1 Steel core wire E2 Aluminum stranded wire

Claims (4)

鋼心アルミより線から成る電線の端部に固定され、牽引ワイヤを接続する延線クランプにおいて、
一端部に前記牽引ワイヤを接続するための引手と、他端部に前記電線の端部が挿入されるより線挿入穴と、中間部により線挿入穴に挿入されたアルミより線から延長する鋼心線を挿入する鋼心線挿入穴とを備え、鋼心線を圧縮固定する圧縮領域と、アルミより線を前記圧縮領域より緩く圧縮し、金車通過時の金車に沿った電線の湾曲による内外のアルミ素線の相対変位を許容する半圧縮領域と、前記より線挿入穴の口元部に圧縮しない非圧縮領域とを有するクランプ本体と、
前記クランプ本体に挿入された電線のクランプ本体の隣接部分周りを被覆し、金車通過時に金車に沿ってクランプ本体に対して傾斜し、クランプ本体の口元部の電線の屈曲を緩和する緩衝部材とを具備することを特徴とする延線クランプ。
In the wire extension clamp that is fixed to the end of the electric wire made of steel core aluminum wire and connects the pulling wire,
A steel wire extending from the wire inserted into the wire insertion hole by the intermediate portion, a wire insertion hole in which the end portion of the electric wire is inserted in the other end portion, and a handle for connecting the pulling wire to one end portion A steel core wire insertion hole for inserting a core wire, a compression region for compressing and fixing the steel core wire, and an aluminum strand wire being compressed more loosely than the compression region, and bending of the electric wire along the gold wheel when passing through the gold wheel A clamp body having a semi-compressed region that allows relative displacement of the inner and outer aluminum strands, and a non-compressed region that is not compressed at the mouth portion of the strand insertion hole;
A buffer member that covers the vicinity of the adjacent portion of the clamp body of the electric wire inserted into the clamp body, and is inclined with respect to the clamp body along the gold wheel when passing through the gold wheel, thereby relaxing the bending of the electric wire at the mouth of the clamp body A wire clamp characterized by comprising:
前記緩衝部材は、被覆する電線と共に前記クランプ本体のより線挿入穴に挿入される合成樹脂製の弾性カバーであり、
前記半圧縮領域は、前記弾性カバーにより前記アルミより線に対する圧縮を緩和する一方、前記アルミより線をクランプ本体から抜け止めすることを特徴とする請求項1に記載の延線クランプ。
The buffer member is an elastic cover made of synthetic resin that is inserted into a stranded wire insertion hole of the clamp body together with an electric wire to be covered,
The wire clamp according to claim 1, wherein the semi-compression region relaxes compression of the aluminum strands by the elastic cover, and prevents the aluminum strands from coming off from a clamp body.
前記緩衝部材は、前記クランプ本体に隣接して電線上に固定される一つ又は電線方向に並ぶ互いに傾斜可能な複数の保護リングであることを特徴とする請求項1に記載の延線クランプ。   The wire clamp according to claim 1, wherein the buffer member is one of a plurality of protective rings which are fixed on the electric wire adjacent to the clamp body and which can be inclined with respect to the electric wire direction. 前記緩衝部材に隣接して、前記緩衝部材の電線方向のずれを阻止する固定手段を備えることを特徴とする請求項1ないし3のいずれかに記載の延線クランプ。   The wire extension clamp according to any one of claims 1 to 3, further comprising a fixing unit that is adjacent to the buffer member and prevents a shift of the buffer member in the electric wire direction.
JP2011274019A 2011-12-15 2011-12-15 Wire clamp Active JP5755131B2 (en)

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