JP2021145519A - Equipotential bonding metal fitting - Google Patents

Equipotential bonding metal fitting Download PDF

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JP2021145519A
JP2021145519A JP2020044006A JP2020044006A JP2021145519A JP 2021145519 A JP2021145519 A JP 2021145519A JP 2020044006 A JP2020044006 A JP 2020044006A JP 2020044006 A JP2020044006 A JP 2020044006A JP 2021145519 A JP2021145519 A JP 2021145519A
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lead wire
metal
hole
reinforcing bar
holding tool
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JP7153359B2 (en
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章浩 渡
Akihiro Watari
章浩 渡
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Kunimoto Shokai Co Ltd
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Kunimoto Shokai Co Ltd
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  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
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Abstract

To provide an equipotential bonding metal fitting which can be used as means of connecting a lead wire to a reinforcement in order to protect various electric equipment in a building at lightning when connecting both of the reinforcements or the reinforcement and a steel frame with the lead wire.SOLUTION: A equipotential bonding metal fitting is formed by: a pair of metal nipping tools 1 and 2 nipping a reinforcement R; a reinforcement fastening bolt 22 fastening the pair of metal nipping tools each other; and a lead wire attachment part 6 provided to one of the metal nipping tools. The lead wire attachment part 6 is structured by: a lead wire insertion penetration hole 7 penetrating one metal nipping tool 1 parallel to a length direction of the reinforcement R nipped by the pair of metal nipping tools 1 and 2; a metal lead wire pressing tool 3 inserted into the lead wire insertion penetration hole 7; and a lead wire fastening bolt 15 screwing and penetrating a penetration screw hole 13 penetrating a peripheral wall part of the lead wire insertion penetration hole 7, and in which an inner end is contacted to the lead wire pressing tool 3.SELECTED DRAWING: Figure 2

Description

本発明は、落雷時に鉄筋コンクリート造りの建物内に発生する電位差を抑制して、建物内の各種電気機器を保護するための等電位ボンディング金具に関するものである。
に関するものである。 The present invention relates to equipotential bonding metal fittings for suppressing potential differences generated in a reinforced concrete building during a lightning strike to protect various electrical devices in the building.
It is about.

従来周知の等電位ボンディング金具は、特許文献１にも示されるように、鉄筋を挟み付ける一対の金属製挟持具と、この一対の金属製挟持具を互いに締結する鉄筋締結用ボルトと、一方の金属製挟持具に設けられたリード線取付け部から構成され、リード線取付け部は、一方の金属製挟持具から一体に延出する平板部に、リード線の端末に固着された圧着端子板を重ねてボルトナットにより締結一体化するものであった。 As shown in Patent Document 1, conventionally known equipotential bonding metal fittings include a pair of metal holding tools for sandwiching reinforcing bars, a reinforcing bar fastening bolt for fastening the pair of metal holding tools to each other, and one of them. It is composed of a lead wire mounting part provided on a metal holding tool, and the lead wire mounting part has a crimping terminal plate fixed to a lead wire terminal on a flat plate portion extending integrally from one of the metal holding tools. It was laminated and fastened and integrated with bolts and nuts.

特開2011-155769号公報Japanese Unexamined Patent Publication No. 2011-155769

上記のような従来周知の等電位ボンディング金具では、リード線の端末に圧着端子板が固着されていることが前提になるものであるから、圧着端子板が取り付けられる前のリード線を使用することが出来なかった。 Since it is premised that the crimp terminal plate is fixed to the end of the lead wire in the conventionally well-known equipotential bonding metal fittings as described above, the lead wire before the crimp terminal plate is attached should be used. I couldn't.

本発明は、上記のような従来の問題点を解消することのできる等電位ボンディング金具を提案するものであって、本発明に係る等電位ボンディング金具は、後述する実施例との関係を理解し易くするために、当該実施例の説明において使用した参照符号を括弧付きで付して示すと、鉄筋(R)を挟み付ける一対の金属製挟持具(1,2)と、この一対の金属製挟持具(1,2)を互いに締結する鉄筋締結用ボルト(22)と、一方の金属製挟持具(1)に設けられたリード線取付け部(6)から成る等電位ボンディング金具において、リード線取付け部(6)は、一対の金属製挟持具(1,2)が挟持する鉄筋(R)の長さ方向と平行に一方の金属製挟持具(1)を貫通するリード線挿通用貫通孔(7)と、このリード線挿通用貫通孔(7)内に挿入された金属製のリード線押さえ具(3)と、リード線挿通用貫通孔(7)の周壁部を貫通する貫通ネジ孔(13)を螺合貫通して内端がリード線押さえ具(3)に当接するリード線締結用ボルト(8)から成る構成になっている。 The present invention proposes an equipotential bonding metal fitting that can solve the above-mentioned conventional problems, and the equipotential bonding metal fitting according to the present invention understands the relationship with the examples described later. For the sake of simplicity, the reference numerals used in the description of the embodiment are shown in parentheses: a pair of metal holding tools (1,2) for sandwiching the reinforcing bar (R) and a pair of metal holding tools (1,2). A lead wire in an equipotential bonding metal fitting consisting of a reinforcing bar fastening bolt (22) for fastening the holding tools (1, 2) to each other and a lead wire mounting portion (6) provided on one of the metal holding tools (1). The mounting portion (6) is a lead wire insertion through hole that penetrates one of the metal holding tools (1) in parallel with the length direction of the reinforcing bar (R) held by the pair of metal holding tools (1, 2). (7), a metal lead wire retainer (3) inserted in the lead wire insertion through hole (7), and a through screw hole penetrating the peripheral wall of the lead wire insertion through hole (7). It is composed of a lead wire fastening bolt (8) whose inner end abuts on the lead wire retainer (3) by screwing through (13).

上記本発明の構成によれば、一対の金属製挟持具間で鉄筋を挟み付けた状態で鉄筋締結用ボルトによって当該一対の金属製挟持具を互いに締結することにより、本発明の等電位ボンディング金具を鉄筋の所要位置に固定したならば、端末に従来使用されていた圧着端子板が取り付けられていないリード線の端末所定長さ領域を、一方の金属製挟持具に設けられているリード線挿通用貫通孔内の前記リード線押さえ具の内側（前記リード線締結用ボルトのある側とは反対側）に、好ましくは当該リード線の端末がリード線挿通用貫通孔の他端から突出する程度まで挿入する。この後、リード線締結用ボルトを締め付けて当該ボルトの内端で前記リード線押さえ具をリード線のある側に押圧することにより、リード線挿通用貫通孔内に挿入されたリード線をリード線押さえ具とリード線挿通用貫通孔の内面との間で挟み付ける。 According to the configuration of the present invention, the equal potential bonding metal fitting of the present invention is formed by fastening the pair of metal holding tools to each other with a reinforcing bar fastening bolt in a state where the reinforcing bars are sandwiched between the pair of metal holding tools. Is fixed at the required position of the reinforcing bar, the lead wire insertion provided in one of the metal holders in the terminal predetermined length area of the lead wire to which the crimp terminal plate conventionally used for the terminal is not attached. To the extent that the end of the lead wire protrudes from the other end of the lead wire insertion through hole to the inside of the lead wire retainer (the side opposite to the side where the lead wire fastening bolt is located) in the through hole. Insert up to. After that, by tightening the lead wire fastening bolt and pressing the lead wire retainer to the side with the lead wire at the inner end of the bolt, the lead wire inserted into the lead wire insertion through hole is pulled into the lead wire. It is sandwiched between the presser foot and the inner surface of the lead wire insertion through hole.

上記のように鉄筋を挟持させた一対の金属製挟持具の内の一方に、端末に圧着端子板が取り付けられていないリード線を簡単容易に固定することが出来るのであるが、リード線（一般的には複数本の導線を束ねて撚りをかけたもの）を直接ボルトの先端面で押圧固定する場合と比較して、ボルトの先端面でリード線を損傷させる恐れも無く、リード線と金属製挟持具との間の接触導通面積を十分に大きくすることが出来、所期の目的である等電位ボンディングの効果を確実に得ることが出来る。 As described above, a lead wire having no crimp terminal plate attached to the terminal can be easily and easily fixed to one of the pair of metal holding tools having a reinforcing bar sandwiched between them. Compared to the case where multiple conductors are bundled and twisted) directly pressed and fixed on the tip surface of the bolt, there is no risk of damaging the lead wire on the tip surface of the bolt, and the lead wire and metal The contact conduction area with the holding tool can be made sufficiently large, and the effect of equipotential bonding, which is the intended purpose, can be surely obtained.

上記本発明を実施する場合、前記リード線押さえ具の両端に金属製挟持具の両端に隣接する折曲部を形成させることによって、リード線をリード線挿通用貫通孔に挿入する場合などにリード線押さえ具の位置がリード線挿通用貫通孔の長さ方向に不測に動いてしまう恐れが無くなる。しかしながら前記リード線押さえ具(3)を、リード線挿通用貫通孔(7)内に挿入される本体(10)と、この本体(10)の一端から金属製挟持具(1)の外側に回り込む延出部(11)とを有する構造とし、前記リード線締結用ボルト(8)は、前記延出部(11)に設けられたボルト挿通孔(12)を経由して前記貫通ネジ孔(13)に螺合するように構成すれば、前記リード線締結用ボルトによってリード線押さえ具を所定位置に仮止めすることが出来、リード線をリード線挿通用貫通孔内に挿入する際にリード線押さえ具をリード線挿通用貫通孔内にセットする必要が無くなり、作業性が一段と向上する。 When the present invention is carried out, the lead wire is inserted into the lead wire insertion through hole by forming bent portions adjacent to both ends of the metal holding tool at both ends of the lead wire holding tool. There is no risk that the position of the wire retainer will unexpectedly move in the length direction of the lead wire insertion through hole. However, the lead wire retainer (3) wraps around the main body (10) inserted into the lead wire insertion through hole (7) and the outside of the metal holding tool (1) from one end of the main body (10). The structure has an extension portion (11), and the lead wire fastening bolt (8) has a through screw hole (13) via a bolt insertion hole (12) provided in the extension portion (11). ), The lead wire retainer can be temporarily fixed at a predetermined position by the lead wire fastening bolt, and the lead wire is inserted into the lead wire insertion through hole. It is no longer necessary to set the presser foot in the lead wire insertion through hole, which further improves workability.

上記の構成を採用する場合、前記リード線締結用ボルト(8,9)は、前記リード線押さえ具(3)の本体(10)の長さ方向２か所を締結出来るように２本設け、この２本のリード線締結用ボルト(8,9)の内の一本が前記リード線押さえ金具(3)の延出部(11)に設けられたボルト挿通孔(12)を挿通するように構成することにより、リード線挿通用貫通孔とリード線押さえ具の全長を長くしても、リード線をリード線挿通用貫通孔の内面とリード線押さえ具の内面とに効果的に圧接させることができ、しかも１本のリード線締結用ボルトによってリード線押さえ具を所定位置に仮止めすることが出来る。 When the above configuration is adopted, two lead wire fastening bolts (8, 9) are provided so that two positions in the length direction of the main body (10) of the lead wire retainer (3) can be fastened. One of the two lead wire fastening bolts (8, 9) inserts the bolt insertion hole (12) provided in the extension portion (11) of the lead wire holding metal fitting (3). By configuring it, even if the total length of the lead wire insertion through hole and the lead wire retainer is lengthened, the lead wire can be effectively pressed against the inner surface of the lead wire insertion through hole and the inner surface of the lead wire retainer. Moreover, the lead wire retainer can be temporarily fixed at a predetermined position by using one lead wire fastening bolt.

又、前記リード線押さえ具(3)のリード線挿通用貫通孔(7)内に挿入される領域は、前記リード線挿通用貫通孔(7)の内周面に沿う横断面円弧形に形成することにより、このリード線押さえ具のリード線挿通用貫通孔内に挿入される領域の曲げ強度が強くなって、リード線締結用ボルトで押圧される箇所を支点にリード線押さえ具がリード線から離れる方向に折れ曲がってしまう恐れが解消する。 Further, the region inserted into the lead wire insertion through hole (7) of the lead wire retainer (3) has a cross-sectional arc shape along the inner peripheral surface of the lead wire insertion through hole (7). By forming the lead wire retainer, the bending strength of the region inserted into the lead wire insertion through hole of the lead wire retainer becomes stronger, and the lead wire retainer leads the lead wire retainer with the portion pressed by the lead wire fastening bolt as a fulcrum. The risk of bending away from the line is eliminated.

尚、一対の金属製挟持具によって鉄筋を挟持締結させるための構成は特に限定されないが、好ましい構成としては、次のように構成するのが望ましい。即ち、前記リード線取付け部(6)が設けられた一方の金属製挟持具(1)は、前記リード線締結用ボルト(8,9)のある側とは反対側に、リード線挿通用貫通孔(7)と平行な全長にわたって連続するように設けられた鉄筋嵌合用凹溝部(15)を備え、他方の金属製挟持具(2)は、前記一方の金属製挟持具(1)の長さ方向に対して直交する方向の帯状天板部(16)と、この帯状天板部(16)の両側辺から前記一方の金属製挟持具(1)のある側に連設された一対の側板部(17,18)とを備えた縦断面コの字形のものであって、この他方の金属製挟持具(2)の長さ方向の一端側で前記一対の側板部(17,18)に、前記一方の金属製挟持具(1)の鉄筋嵌合用凹溝部(15)との間で鉄筋(R)を挟持する鉄筋嵌合用凹入部(19,20)が形成され、この他方の金属製挟持具(2)の長さ方向の他端側で前記帯状天板部(16)に貫通孔(21)が設けられ、この貫通孔(21)に差し込まれた前記鉄筋締結用ボルト(22)が前記一方の金属製挟持具(1)に設けられたネジ孔(23)に螺合するように構成することが出来る。この構成によれば、１本の鉄筋締結用ボルトを使用する構成でありながら、鉄筋に対し本発明金具を強固且つ簡単に、そして安定的に締結することが出来る。 The configuration for sandwiching and fastening the reinforcing bar with the pair of metal sandwiches is not particularly limited, but the preferred configuration is as follows. That is, one of the metal holding tools (1) provided with the lead wire mounting portion (6) has a lead wire insertion penetration on the side opposite to the side with the lead wire fastening bolts (8, 9). It is provided with a reinforcing bar fitting recessed groove (15) provided so as to be continuous over the entire length parallel to the hole (7), and the other metal holding tool (2) is the length of the one metal holding tool (1). A pair of strip-shaped top plate portion (16) in a direction orthogonal to the vertical direction and a pair of strip-shaped top plate portions (16) connected to one side of the metal holding tool (1) from both sides of the strip-shaped top plate portion (16). It has a U-shaped vertical cross section with side plate portions (17,18), and the pair of side plate portions (17,18) on one end side in the length direction of the other metal holding tool (2). A reinforcing bar fitting recessed portion (19, 20) for sandwiching the reinforcing bar (R) is formed between the one metal holding tool (1) and the reinforcing bar fitting recessed groove portion (15), and the other metal. A through hole (21) is provided in the strip-shaped top plate portion (16) on the other end side of the holding tool (2) in the length direction, and the reinforcing bar fastening bolt (22) inserted into the through hole (21). ) Can be configured to be screwed into the screw hole (23) provided in the one metal holding tool (1). According to this configuration, the metal fittings of the present invention can be firmly, easily, and stably fastened to the reinforcing bars, even though one bolt for fastening the reinforcing bars is used.

図１は、縦断正面図である。FIG. 1 is a vertical sectional front view. 図２は、縦断側面図である。FIG. 2 is a vertical sectional side view. 図３は、ボルト類を除いた構成部品を示す斜視図である。FIG. 3 is a perspective view showing components excluding bolts.

以下に本発明の実施例を、添付の図１〜図３に基いて説明すると、１は真鍮（C2801）製の主金属製挟持具、２は一般構造用圧延鋼材（SS400）製の副金属製挟持具、３は溶融亜鉛メッキ鋼板（SGCC）製のリード線押さえ具である。主金属製挟持具１は、角柱状の挟持具本体４と、この挟持具本体４の底面と面一に片側に延出させた張出し板状部５とから成り、リード線取付け部６を備えている。このリード線取付け部６は、挟持具本体４の中心位置を全長にわたって貫通する断面円形のリード線挿通用貫通孔７と、このリード線挿通用貫通孔７に一端から挿入されるリード線押さえ具３、及び２本のリード線締結用ボルト８，９から構成されている。リード線押さえ具３は、リード線挿通用貫通孔７の全長とほぼ等しい長さの押さえ具本体１０と、この押さえ具本体１０の一端からコの字形に折り返した、押さえ具本体１０と平行な延出部１１とから構成され、延出部１１には、円形のボルト挿通孔１２が設けられている。 Hereinafter, examples of the present invention will be described with reference to FIGS. 1 to 3, where 1 is a brass (C2801) main metal holding tool, and 2 is a general structural rolled steel (SS400) auxiliary metal. The holding tool 3 is a lead wire holding tool made of hot-dip galvanized steel plate (SGCC). The main metal holding tool 1 is composed of a prismatic holding tool main body 4 and an overhang plate-shaped portion 5 extending to one side flush with the bottom surface of the holding tool main body 4, and includes a lead wire mounting portion 6. ing. The lead wire mounting portion 6 includes a lead wire insertion through hole 7 having a circular cross section that penetrates the center position of the holding tool main body 4 over the entire length, and a lead wire holder that is inserted from one end into the lead wire insertion through hole 7. It is composed of 3 and 2 lead wire fastening bolts 8 and 9. The lead wire holding tool 3 is parallel to the holding tool main body 10 having a length substantially equal to the total length of the lead wire insertion through hole 7 and the holding tool main body 10 folded back in a U shape from one end of the holding tool main body 10. It is composed of an extension portion 11, and the extension portion 11 is provided with a circular bolt insertion hole 12.

主金属製挟持具１には、その上面の長さ方向両端から同一距離だけ離れた２か所に、内端がリード線挿通用貫通孔７に開口する貫通ネジ孔１３，１４が設けられ、これら貫通ネジ孔１３，１４に螺合貫通し且つ内端が押さえ具本体１０に当接する２本のリード線締結用ボルト８，９が設けられている。リード線押さえ具３の延出部１１は、押さえ具本体１０の全体をリード線挿通用貫通孔７内に挿入させたとき、当該延出部１１のボルト挿通孔１２が、この延出部１１のある側の貫通ネジ孔１３又は１４の真上位置に同心状に位置するように構成され、この貫通ネジ孔１３又は１４に螺合するリード線締結用ボルト８又は９は、リード線押さえ具３の延出部１１のボルト挿通孔１２を経由して貫通ネジ孔１３又は１４に螺合することになる。リード線挿通用貫通孔７内に挿入されている押さえ具本体１０は、リード線挿通用貫通孔７の内周面に沿う横断面円弧形に成形されている。 The main metal holding tool 1 is provided with through screw holes 13 and 14 whose inner ends open into lead wire insertion through holes 7 at two locations separated by the same distance from both ends in the length direction of the upper surface thereof. Two lead wire fastening bolts 8 and 9 are provided through the through screw holes 13 and 14 so as to be screwed through and the inner end abuts on the holding tool main body 10. In the extension portion 11 of the lead wire retainer 3, when the entire presser body 10 is inserted into the lead wire insertion through hole 7, the bolt insertion hole 12 of the extension portion 11 is the extension portion 11. The lead wire fastening bolts 8 or 9 screwed into the through screw holes 13 or 14 are concentrically located directly above the through screw holes 13 or 14 on the side with the lead wire holder. It will be screwed into the through screw hole 13 or 14 via the bolt insertion hole 12 of the extension portion 11 of 3. The presser body 10 inserted into the lead wire insertion through hole 7 is formed into an arc shape in cross section along the inner peripheral surface of the lead wire insertion through hole 7.

主金属製挟持具１の挟持具本体４の底面には、リード線挿通用貫通孔７と平行な全長にわたって連続するように鉄筋嵌合用凹溝部１５が刻設されている。副金属製挟持具２は、主金属製挟持具１の挟持具本体４の長さ方向に対して直交する方向の帯状天板部１６と、この帯状天板部１６の両側辺から主金属製挟持具１のある側に連設された一対の側板部１７，１８とを備えた縦断面コの字形のものであって、この副金属製挟持具２の長さ方向の一端側で前記一対の側板部１７，１８に、主金属製挟持具１の鉄筋嵌合用凹溝部１５との間で鉄筋Ｒを挟持する鉄筋嵌合用凹入部１９，２０が形成され、この副金属製挟持具２の長さ方向の他端側で前記帯状天板部１６に貫通孔２１が設けられ、この貫通孔２１に差し込まれた鉄筋締結用ボルト２２が、主金属製挟持具１の張出し板状部５に設けられた貫通ネジ孔２３に螺合するように構成されている。 A recessed groove portion 15 for fitting a reinforcing bar is engraved on the bottom surface of the holding tool main body 4 of the main metal holding tool 1 so as to be continuous over the entire length parallel to the lead wire insertion through hole 7. The sub-metal holding tool 2 is made of a strip-shaped top plate portion 16 in a direction orthogonal to the length direction of the holding tool main body 4 of the main metal holding tool 1, and a main metal from both sides of the strip-shaped top plate portion 16. It has a U-shaped vertical cross section provided with a pair of side plate portions 17 and 18 connected to the side of the holding tool 1, and the pair is on one end side in the length direction of the auxiliary metal holding tool 2. Reinforcing bar fitting recesses 19 and 20 for sandwiching the reinforcing bar R with the reinforcing bar fitting recessed groove portion 15 of the main metal sandwiching tool 1 are formed on the side plate portions 17 and 18 of the secondary metal sandwiching tool 2. A through hole 21 is provided in the strip-shaped top plate portion 16 on the other end side in the length direction, and the reinforcing bar fastening bolt 22 inserted into the through hole 21 is provided in the overhang plate-shaped portion 5 of the main metal holding tool 1. It is configured to be screwed into the provided through screw hole 23.

以上のように構成された等電位ボンディング金具は、鉄筋コンクリート製の建物に使用されている鉄筋Ｒを他の鉄筋又は鉄骨とリード線Ｌによって電気的に接続させるために使用されるものであって、主金属製挟持具１と副金属製挟持具２を連結している鉄筋締結用ボルト２２を弛めて、主金属製挟持具１の鉄筋嵌合用凹溝部１５と副金属製挟持具２の鉄筋嵌合用凹入部１９，２０との間を広げ、これら主金属製挟持具１と副金属製挟持具２とを、これらの間に鉄筋Ｒが入り込むように鉄筋Ｒに対し横から嵌合させる。この後、鉄筋締結用ボルト２２を締め込んで、主金属製挟持具１の鉄筋嵌合用凹溝部１５と副金属製挟持具２の鉄筋嵌合用凹入部１９，２０との間で鉄筋Ｒを挟持締結させる。尚、このとき、副金属製挟持具２の一対の側板部１７，１８の長さ方向両端の内、鉄筋締結用ボルト２２のある側の端部１７ａ，１８ａが主金属製挟持具１の張出し板状部５の底面に接近しているように構成されている。 The equipotential bonding metal fittings configured as described above are used to electrically connect the reinforcing bar R used in a reinforced concrete building to another reinforcing bar or steel frame by a lead wire L. Loosen the reinforcing bar fastening bolt 22 that connects the main metal holding tool 1 and the secondary metal holding tool 2, and loosen the reinforcing bar fitting recess 15 of the main metal holding tool 1 and the reinforcing bar of the secondary metal holding tool 2. The space between the fitting recesses 19 and 20 is widened, and the main metal holding tool 1 and the sub-metal holding tool 2 are fitted to the reinforcing bar R from the side so that the reinforcing bar R is inserted between them. After that, the reinforcing bar fastening bolt 22 is tightened, and the reinforcing bar R is sandwiched between the reinforcing bar fitting recessed groove portion 15 of the main metal sandwiching tool 1 and the reinforcing bar fitting recessed portions 19 and 20 of the secondary metal sandwiching tool 2. To conclude. At this time, of the ends 17a and 18 of the pair of side plate portions 17 and 18 of the auxiliary metal holding tool 2 in the length direction, the ends 17a and 18a on the side where the reinforcing bar fastening bolt 22 is located are the overhangs of the main metal holding tool 1. It is configured to be close to the bottom surface of the plate-shaped portion 5.

以上のようにして鉄筋Ｒの所定箇所に本発明の等電位ボンディング金具を取り付けたならば、主金属製挟持具１のリード線締結用ボルト８，９をねじ戻して、リード線押さえ具３の押さえ具本体１１をこれに対面するリード線挿通用貫通孔７の内面から離間させた状態において、端末に圧着端子板が取り付けられていないリード線Ｌの端末を、主金属製挟持具１のリード線挿通用貫通孔７内に、リード線押さえ具３の延出部１１のある側から、押さえ具本体１１とこれに対面するリード線挿通用貫通孔７の内面との間に挿入する。このリード線Ｌを、端末がリード線挿通用貫通孔７の他端から突出する程度までリード線挿通用貫通孔７内に十分に挿入したならば、主金属製挟持具１のリード線締結用ボルト８，９をねじ込んで、その内端でリード線挿通用貫通孔７内に挿入されているリード線押さえ具３の押さえ具本体１１をリード線Ｌ側に押圧し、当該押さえ具本体１１とリード線挿通用貫通孔７の内面との間でリード線Ｌを挟持締結させることにより、鉄筋Ｒに対するリード線Ｌの接続が完了する。 After the equipotential bonding metal fitting of the present invention is attached to the predetermined position of the reinforcing bar R as described above, the lead wire fastening bolts 8 and 9 of the main metal holding tool 1 are screwed back to form the lead wire holding tool 3. In a state where the holding tool main body 11 is separated from the inner surface of the lead wire insertion through hole 7 facing the holding tool main body 11, the terminal of the lead wire L to which the crimp terminal plate is not attached to the terminal is replaced with the lead of the main metal holding tool 1. It is inserted into the wire insertion through hole 7 from the side where the extension portion 11 of the lead wire holding tool 3 is located, between the holding tool main body 11 and the inner surface of the lead wire insertion through hole 7 facing the holding tool main body 11. When the lead wire L is sufficiently inserted into the lead wire insertion through hole 7 to the extent that the terminal protrudes from the other end of the lead wire insertion through hole 7, the lead wire fastening tool 1 is used for fastening the lead wire. Bolts 8 and 9 are screwed in, and the holding tool main body 11 of the lead wire holding tool 3 inserted into the lead wire insertion through hole 7 is pressed toward the lead wire L side at the inner end thereof, and the holding tool main body 11 and the holding tool main body 11 are pressed. By sandwiching and fastening the lead wire L with the inner surface of the lead wire insertion through hole 7, the connection of the lead wire L to the reinforcing bar R is completed.

本発明の等電位ボンディング金具は、落雷時に鉄筋コンクリート造りの建物内に発生する電位差を抑制して、建物内の各種電気機器を保護するために、鉄筋どうし又は鉄筋と鉄骨とをリード線で接続させる場合に、当該リード線を鉄筋に接続させるための手段として活用出来る。 The equipotential bonding metal fitting of the present invention suppresses the potential difference generated in a reinforced concrete building at the time of a lightning strike, and connects the reinforcing bars or the reinforcing bars and the steel frame with lead wires in order to protect various electric devices in the building. In some cases, it can be used as a means for connecting the lead wire to the reinforcing bar.

１ 主金属製挟持具
２ 副金属製挟持具
３ リード線押さえ具
４ 挟持具本体
５ 張出し板状部
６ リード線取付け部
７ リード線挿通用貫通孔
８，９ リード線締結用ボルト
１０ 押さえ具本体
１１ 延出部
１２ ボルト挿通孔
１３，１４ 貫通ネジ孔
１５ 鉄筋嵌合用凹溝部
１６ 帯状天板部
１７，１８ 一対の側板部
１７ａ，１８ａ 側板部の端部
１９，２０ 鉄筋嵌合用凹入部
２１ 貫通孔
２２ 鉄筋締結用ボルト
２３ 貫通ネジ孔
Ｒ 鉄筋
Ｌ リード線
1 Main metal holding tool 2 Secondary metal holding tool 3 Lead wire holding tool 4 Holding tool main body 5 Overhang plate-shaped part 6 Lead wire mounting part 7 Lead wire insertion through hole 8, 9 Lead wire fastening bolt 10 Holding tool main body 11 Extension part 12 Bolt insertion hole 13, 14 Through screw hole 15 Reinforcing bar fitting recessed groove part 16 Band-shaped top plate part 17, 18 Pair of side plate parts 17a, 18a Side plate part end 19, 20 Reinforcing bar fitting recessing part 21 Penetration Hole 22 Reinforcing bar fastening bolt 23 Through screw hole R Reinforcing bar L Lead wire

Claims (5)

鉄筋を挟み付ける一対の金属製挟持具と、この一対の金属製挟持具を互いに締結する鉄筋締結用ボルトと、一方の金属製挟持具に設けられたリード線取付け部から成る等電位ボンディング金具において、リード線取付け部は、一対の金属製挟持具が挟持する鉄筋の長さ方向と平行に一方の金属製挟持具を貫通するリード線挿通用貫通孔と、このリード線挿通用貫通孔内に挿入された金属製のリード線押さえ具と、リード線挿通用貫通孔の周壁部を貫通する貫通ネジ孔を螺合貫通して内端がリード線押さえ具に当接するリード線締結用ボルトから構成されている、等電位ボンディング金具。 In an equipotential bonding metal fitting consisting of a pair of metal holding tools for sandwiching reinforcing bars, a reinforcing bar fastening bolt for fastening the pair of metal holding tools to each other, and a lead wire attachment portion provided on one of the metal holding tools. , The lead wire mounting portion is provided in a lead wire insertion through hole that penetrates one of the metal holders in parallel with the length direction of the reinforcing bar held by the pair of metal holders, and in the lead wire insertion through hole. Consists of an inserted metal lead wire retainer and a lead wire fastening bolt whose inner end abuts on the lead wire retainer by screwing through a through screw hole that penetrates the peripheral wall of the lead wire insertion through hole. Equal potential bonding metal fittings. 前記リード線押さえ具は、リード線挿通用貫通孔内に挿入される本体と、この本体の一端から金属製挟持具の外側に回り込む延出部とを有し、前記リード線締結用ボルトは、前記延出部に設けられたボルト挿通孔を経由して前記貫通ネジ孔に螺合するように構成されている、請求項１に記載の等電位ボンディング金具。 The lead wire retainer has a main body inserted into the lead wire insertion through hole, and an extension portion that wraps around from one end of the main body to the outside of the metal holding tool. The equipotential bonding metal fitting according to claim 1, which is configured to be screwed into the through screw hole via a bolt insertion hole provided in the extension portion. 前記リード線締結用ボルトは、前記リード線押さえ具の本体の長さ方向２か所を締結出来るように２本設けられ、この２本のリード線締結用ボルトの内の一本が前記リード線押さえ金具の延出部に設けられたボルト挿通孔を挿通するように構成されている、請求項２に記載の等電位ボンディング金具。 Two lead wire fastening bolts are provided so that two lead wire fastening bolts can be fastened in the length direction of the main body of the lead wire retainer, and one of the two lead wire fastening bolts is the lead wire. The equipotential bonding metal fitting according to claim 2, which is configured to insert a bolt insertion hole provided in an extension portion of the holding metal fitting. 前記リード線押さえ具のリード線挿通用貫通孔内に挿入される領域は、前記リード線挿通用貫通孔の内周面に沿う横断面円弧形に形成されている、請求項１〜３の何れか１項に記載の等電位ボンディング金具。 3. The equipotential bonding metal fitting according to any one of the items. 前記リード線取付け部が設けられた一方の金属製挟持具は、前記リード線締結用ボルトのある側とは反対側に、リード線挿通用貫通孔と平行な全長にわたって連続するように設けられた鉄筋嵌合用凹溝部を備え、他方の金属製挟持具は、前記一方の金属製挟持具の長さ方向に対して直交する方向の帯状天板部と、この帯状天板部の両側辺から前記一方の金属製挟持具のある側に連設された一対の側板部とを備えた縦断面コの字形のものであって、この他方の金属製挟持具の長さ方向の一端側で前記一対の側板部に、前記一方の金属製挟持具の鉄筋嵌合用凹溝部との間で鉄筋を挟持する鉄筋嵌合用凹入部が形成され、この他方の金属製挟持具の長さ方向の他端側で前記帯状天板部に貫通孔が設けられ、この貫通孔に差し込まれた前記鉄筋締結用ボルトが前記一方の金属製挟持具に設けられたネジ孔に螺合するように構成されている、請求項１〜４の何れか１項に記載の等電位ボンディング金具。
The one metal holding tool provided with the lead wire mounting portion was provided on the side opposite to the side with the lead wire fastening bolt so as to be continuous over the entire length parallel to the lead wire insertion through hole. The metal sandwiching tool provided with the recessed groove portion for fitting the reinforcing bar is the strip-shaped top plate portion in the direction orthogonal to the length direction of the one metal sandwiching tool, and the strip-shaped top plate portion from both sides of the strip-shaped top plate portion. It has a U-shaped vertical cross section with a pair of side plates connected to one side of the metal holding tool, and the pair on one end side in the length direction of the other metal holding tool. A reinforcing bar fitting recess for sandwiching the reinforcing bar is formed on the side plate portion of the metal sandwiching tool with the reinforcing bar fitting concave groove portion of the one metal holding tool, and the other end side in the length direction of the other metal holding tool. A through hole is provided in the strip-shaped top plate portion, and the reinforcing bar fastening bolt inserted into the through hole is screwed into a screw hole provided in the one metal holding tool. The equipotential bonding metal fitting according to any one of claims 1 to 4.
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Citations (6)

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Publication number Priority date Publication date Assignee Title
JPS5789275U (en) * 1980-11-20 1982-06-02
JPH0973929A (en) * 1995-09-05 1997-03-18 Osaka Hiraishin Kogyo Kk Reinforcing steel connecting fitting of lightning conductor and lightning conductor assembly fitting
US6297447B1 (en) * 2000-03-23 2001-10-02 Yazaki North America, Inc. Grounding device for coaxial cable
JP2012164564A (en) * 2011-02-08 2012-08-30 Toda Constr Co Ltd Conductive connection hardware and conductive connection method
US20160344112A1 (en) * 2015-05-20 2016-11-24 Thomas & Betts International Llc Floor Ground Clamp
JP3225871U (en) * 2020-01-31 2020-04-09 株式会社村田電機製作所 Lead terminal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5789275B2 (en) 2012-02-03 2015-10-07 エーエスエムエル ネザーランズ ビー．ブイ． Lithography model for simulation of 3D resist profiles

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789275U (en) * 1980-11-20 1982-06-02
JPH0973929A (en) * 1995-09-05 1997-03-18 Osaka Hiraishin Kogyo Kk Reinforcing steel connecting fitting of lightning conductor and lightning conductor assembly fitting
US6297447B1 (en) * 2000-03-23 2001-10-02 Yazaki North America, Inc. Grounding device for coaxial cable
JP2012164564A (en) * 2011-02-08 2012-08-30 Toda Constr Co Ltd Conductive connection hardware and conductive connection method
US20160344112A1 (en) * 2015-05-20 2016-11-24 Thomas & Betts International Llc Floor Ground Clamp
JP3225871U (en) * 2020-01-31 2020-04-09 株式会社村田電機製作所 Lead terminal

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