JP6564540B1 - Steel bar parallel connection bracket - Google Patents

Steel bar parallel connection bracket Download PDF

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JP6564540B1
JP6564540B1 JP2019024597A JP2019024597A JP6564540B1 JP 6564540 B1 JP6564540 B1 JP 6564540B1 JP 2019024597 A JP2019024597 A JP 2019024597A JP 2019024597 A JP2019024597 A JP 2019024597A JP 6564540 B1 JP6564540 B1 JP 6564540B1
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steel bar
fastening
main body
shaped main
fastening bolt
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JP2020133148A (en
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章浩 渡
章浩 渡
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株式会社国元商会
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Abstract

【課題】1本では長さ不足の棒鋼を2本、端部どうしを互いに並列させた状態で接続一体化する手段として活用出来る棒鋼並列接続金具を提供する。【解決手段】コ形本体2の両側板部7には、凹窪部10が設けられ、頭部両側に楔状に張り出す棒鋼締結部14が形成された締結用ボルト3は、棒鋼締結部14がコ形本体2の両側板部7間から外側に突出して締結用ボルト3と凹窪部10の両内側辺との間に棒鋼を嵌入出来る非作用位置と、棒鋼締結部14が凹窪部10の両内側辺との間で2本の並列状態の棒鋼を挟持する作用位置との間で出退自在に構成された棒鋼並列接続金具において、締結用ボルト3を作用位置に引き込む付勢バネ5が設けられ、締結用ナット4を捩じ込むことにより、非作用位置にある締結用ボルト3を付勢バネ5の付勢力に抗して非作用位置から作用位置に切り換えられる構成。【選択図】図1The present invention provides a steel bar parallel connection metal fitting that can be used as a means for connecting and integrating two steel bars of insufficient length with one end in a state where end portions are parallel to each other. A fastening bolt 3 in which concave plate portions 10 are provided in both side plate portions 7 of a U-shaped main body 2 and a bar steel fastening portion 14 is formed on both sides of the head in a wedge shape is provided. Projecting outward from between both side plate portions 7 of the U-shaped main body 2 and a non-operating position where a steel bar can be inserted between the fastening bolt 3 and both inner sides of the concave part 10, and the steel bar fastening part 14 is a concave part. In the steel bar parallel connection metal fitting configured to be able to move out and withdrawn between the two parallel bars 10 between the two inner sides, the biasing spring for pulling the fastening bolt 3 into the operating position 5 is provided, and the fastening bolt 3 in the non-operating position is switched from the non-operating position to the operating position against the urging force of the urging spring 5 by screwing the fastening nut 4. [Selection] Figure 1

Description

本発明は、建設現場において、使用する棒鋼の長さが不足する場合に2本の棒鋼の端部どうしを並列状態で互いに結合一体化するための棒鋼並列接続金具に関するものである。   The present invention relates to a steel bar parallel connection fitting for joining and integrating ends of two steel bars in a parallel state when the length of the steel bar to be used is insufficient at a construction site.

この種の棒鋼並列接続金具として、筒状の金具に棒鋼を棒鋼長さ方向に挿通させるのではなく、片側が解放された金具に棒鋼を横から嵌合させることが出来るタイプの金具が、特許文献1によって知られている。この特許文献1に記載された棒鋼並列接続金具は、2本の棒鋼間で金具を貫通する締結用ボルトナットのボルトの楔状頭部と、金具の両側立ち上がり壁部との間で、2本の棒鋼を同時に締結固定出来るように構成されたものである。   This type of steel bar parallel connection metal fitting is a type of metal fitting that allows a steel bar to be fitted from the side to a metal fitting that has been released on one side, rather than inserting a steel bar in the length direction of the steel bar. Known from document 1. The steel bar parallel connection metal fitting described in Patent Document 1 includes two bolts between the wedge-shaped heads of the bolts of the fastening bolts and nuts penetrating the metal fittings between the two steel bars and the both side rising wall portions of the metal fittings. It is configured to be able to fasten and fix steel bars at the same time.

実公昭37−3644号公報Japanese Utility Model Publication No. 37-3644

上記のような特許文献1に記載された構造の棒鋼並列接続金具では、締結用ボルトナットを取り外した金具に2本の棒鋼を嵌合させ、その後に締結用ボルトナットのボルトを所定の向きで2本の棒鋼間で金具に挿通させ、金具の背面側に突出している前記ボルトにナットを螺合締結するか又は、ナットを十分に弛めると共にボルトの楔状頭部の向きを金具との間に横から棒鋼を嵌合できる向きに手で保持した状態で、金具に2本の棒鋼を嵌合させた後に、前記ナットを螺合締結しなければならず、金具を保持することとナットの締結操作以外に多くの手作業が必要であって、2本の棒鋼を並列状態で互いに接続する作業が能率良く行えなかった。   In the steel bar parallel connection fitting having the structure described in Patent Document 1 as described above, two steel bars are fitted to the metal fitting from which the fastening bolt and nut are removed, and then the bolt of the fastening bolt nut is fixed in a predetermined direction. Insert a metal fitting between two steel bars and screw the nut onto the bolt projecting to the back of the metal fitting, or loosen the nut sufficiently and set the direction of the wedge-shaped head of the bolt between the metal fitting The nut must be screwed and fastened after the two steel bars are fitted to the metal fitting in a state where the steel bar can be fitted from the side in a direction that can be fitted by hand, and the metal fitting is held and the nut is fastened. In addition to the operation, many manual operations are required, and the operation of connecting the two steel bars to each other in a parallel state cannot be performed efficiently.

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棒鋼並列接続金具を提案するものであって、本発明に係る棒鋼並列接続金具は、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、コ形本体(2)と、このコ形本体(2)の底板部(6)を貫通する締結用ボルト(3)と、前記コ形本体(2)の底板部(6)の外側で前記締結用ボルト(3)の遊端側に螺嵌する締結用ナット(4)から構成され、前記コ形本体(2)の両側板部(7,8)には凹窪部(10)が形成されると共に、前記締結用ボルト(3)の頭部両側には楔状に張り出す棒鋼締結部(14)が形成され、前記締結用ボルト(3)は、前記棒鋼締結部(14)がコ形本体(2)の両側板部(7,8)間から外側に突出して前記締結用ボルト(3)と前記凹窪部(10)の両内側辺(10a,10b)との間に棒鋼(W1,W2)を嵌入出来る非作用位置と、前記棒鋼締結部(14)が前記凹窪部(10)の両内側辺(10a,10b)との間で2本の並列状態の棒鋼(W1,W2)を挟持する作用位置との間で出退自在に構成された棒鋼並列接続金具(1)において、
前記締結用ボルト(3)を前記作用位置に引き込む付勢バネ(5)が設けられ、前記締結用ナット(4)を捩じ込むことにより、前記非作用位置にある前記締結用ボルト(3)を前記付勢バネ(5)の付勢力に抗して前記非作用位置から前記作用位置に切り換えられる構成となっている。
The present invention proposes a steel bar parallel connection fitting that can solve the above-described conventional problems, and the steel bar parallel connection fitting according to the present invention understands the relationship with the embodiments described later. For the sake of simplicity, when the reference numerals used in the description of the embodiment are shown in parentheses, the U-shaped body (2) and the fastening through the bottom plate portion (6) of the U-shaped body (2) And a fastening nut (4) screwed to the free end side of the fastening bolt (3) outside the bottom plate portion (6) of the U-shaped body (2). The both side plate portions (7, 8) of the main body (2) are formed with recessed portions (10), and the steel bar fastening portions (14) projecting in a wedge shape on both sides of the head of the fastening bolt (3). ), And the fastening bolt (3) is configured such that the steel bar fastening portion (14) protrudes outward from between both side plate portions (7, 8) of the U-shaped main body (2). And both inner sides (10a, 10b) of the recessed portion (10) Two parallel states between the non-actuating position where the steel bars (W1, W2) can be inserted between the steel bar and the steel bar fastening part (14) between both inner sides (10a, 10b) of the concave part (10) In the steel bar parallel connection bracket (1) configured to be freely withdrawn from and retracted from the position where the steel bar (W1, W2) is sandwiched,
A biasing spring (5) for pulling the fastening bolt (3) into the operating position is provided, and the fastening bolt (3) in the non-operating position is provided by screwing the fastening nut (4). Is configured to be switched from the non-operating position to the operating position against the urging force of the urging spring (5).

上記本発明の構成によれば、使用前の状態では、ナットが締結用ボルトの遊端側に後退して付勢バネによって当該締結用ボルトが作用位置に引き込まれた状態になっている。従って使用するときは、コ形本体を把持する手の指先で締結用ボルトの遊端側をコ形本体の底板部に接近させるように押して、付勢バネの付勢力に抗して当該締結用ボルトを作用位置から非作用位置に切り換える。この結果、当該締結用ボルトの頭部の棒鋼締結部がコ形本体の両側板部間から外側に突出して当該締結用ボルトと前記凹窪部の両内側辺との間に棒鋼を嵌入させることが出来る状態になるので、コ形本体を把持し且つ締結用ボルトを非作用位置に押し込んでいる側の手とは逆の手で、2本の棒鋼を締結用ボルトの両側でコ形本体の両側板部間に跨る向きで当該両側板部に設けられている前記凹窪部内に嵌め込むことが出来る。この後、締結用ボルトを非作用位置に押し込んでいる指先を締結用ボルトから離して、締結用ボルトをフリーな状態にすれば、当該締結用ボルトは付勢バネの付勢力で非作用位置から作用位置の方向に移動し、当該締結用ボルトの頭部両側の棒鋼締結部が2本の棒鋼の間に入り込んで、両棒鋼がコ形本体の両側板部の凹窪部における各内側辺に押し付けられる状態になる。   According to the configuration of the present invention, in the state before use, the nut is retracted toward the free end side of the fastening bolt, and the fastening bolt is pulled into the operating position by the biasing spring. Therefore, when using, press the free end side of the fastening bolt with the fingertip of the hand holding the U-shaped body so that it approaches the bottom plate of the U-shaped body, and against the biasing force of the biasing spring Switch the bolt from the working position to the non-working position. As a result, the steel bar fastening portion at the head of the fastening bolt protrudes outward from between both side plate portions of the U-shaped main body, and the steel bar is inserted between the fastening bolt and both inner sides of the recessed recess. Therefore, the two steel bars should be attached to both sides of the fastening bolt with the opposite hand to the hand holding the U-shaped body and pushing the fastening bolt into the non-operating position. It can be fitted into the recessed portion provided in the both side plate portions in a direction straddling between both side plate portions. After that, if the fingertip that is pushing the fastening bolt into the non-acting position is separated from the fastening bolt to make the fastening bolt free, the fastening bolt is moved from the non-acting position by the biasing force of the biasing spring. It moves in the direction of the working position, the steel bar fastening part on both sides of the head of the fastening bolt enters between the two steel bars, and both steel bars are attached to each inner side in the recessed part of the both side plate parts of the U-shaped main body. It will be in a state of being pressed.

以上の操作によって、2本の棒鋼が互いに並列する状態でコ形本体に仮止めされた状態になるので、2本の棒鋼から離した手で次にナットの捻じ込み操作を行い、作用位置に復帰して2本の棒鋼を付勢バネの付勢力で仮止めしている締結用ボルトを、頭部両側の棒鋼締結部が棒鋼の表面に食い込むほどに強く引き込むことにより、並列する2本の棒鋼をコ形本体に強力に圧接固定し、延いては並列する2本の棒鋼どうしを互いに一体に締結させることが出来る。このように本発明の棒鋼並列接続金具によれば、極めて簡単な操作で2本の棒鋼を互いに並列する状態でコ形本体に仮止めすることが出来るので、ナットの捻じ込み操作に際して、コ形本体に嵌め込んだ2本の棒鋼が外れないように、当該コ形本体と2本の棒鋼を一方の手で握り込んで保持した状態で、他方の手でナットの捻じ込み操作を行う必要が無くなり、作業性が格段に改善される。   As a result of the above operation, the two steel bars are temporarily fixed to the U-shaped main body in a state where they are in parallel with each other. The two bolts in parallel are pulled back by pulling the fastening bolts that are temporarily restored and temporarily tightening the two steel bars with the biasing force of the biasing springs so that the steel bar fastening parts on both sides of the head bite into the surface of the steel bar. The steel bar can be strongly pressed and fixed to the U-shaped main body, and the two steel bars in parallel can be fastened together. As described above, according to the steel bar parallel connection fitting of the present invention, the two steel bars can be temporarily fixed to the U-shaped main body in a state of being parallel to each other by an extremely simple operation. It is necessary to perform the screwing operation of the nut with the other hand while holding the U-shaped main body and the two steel bars with one hand so that the two steel bars fitted in the main body do not come off. Eliminates workability.

上記本発明を実施する場合、前記付勢バネは、前記コ形本体の底板部と前記締結用ナットとの間に介装されたコイルバネで構成することも出来るが、コイルバネを限界まで圧縮させたときのコ形本体の底板部と締結用ナットとの間の間隔が比較的大きくなるのに対し、例えば帯状の板バネ材(17)をV字形に曲げたものをコ形本体(2)の底板部(6)と前記締結用ナット(4)との間に介装した場合、コ形本体の底板部に隣接する板状部分と締結用ナットに隣接する板状部分とが互いに当接する限界まで圧縮させたときのコ形本体の底板部と締結用ナットとの間の間隔が、板バネ材2枚分相当に非常に小さくなるので、締結用ボルトが作用位置にあるときのコ形本体の底板部からの締結用ナット(締結用ボルト)の突出量を小さく抑えることが出来る。この結果、コ形本体を把持した手の指先で締結用ボルトの遊端を押し込んで、締結用ボルトを作用位置から非作用位置に切り換える操作が容易に行える。   When carrying out the present invention, the biasing spring can be constituted by a coil spring interposed between the bottom plate portion of the U-shaped main body and the fastening nut, but the coil spring is compressed to the limit. Whereas the distance between the bottom plate portion of the U-shaped main body and the fastening nut becomes relatively large, for example, a belt-shaped leaf spring material (17) bent into a V-shape is formed on the U-shaped main body (2). When interposed between the bottom plate portion (6) and the fastening nut (4), the limit that the plate-like portion adjacent to the bottom plate portion of the U-shaped main body and the plate-like portion adjacent to the fastening nut contact each other The distance between the bottom plate portion of the U-shaped main body and the fastening nut when compressed to a very small extent is equivalent to two leaf spring materials, so the U-shaped main body when the fastening bolt is in the operating position The amount of protrusion of the fastening nut (fastening bolt) from the bottom plate portion of the steel plate can be kept small. As a result, the operation of switching the fastening bolt from the operating position to the non-operating position by pushing the free end of the fastening bolt with the fingertip of the hand holding the U-shaped main body can be easily performed.

上記のように付勢バネを板バネ材で構成する場合、当該板バネ材(17)を、前記締結用ボルト(3)が貫通する第一貫通孔(18)を備え且つ前記締結用ナット(4)の底面に隣接する第一帯板部(17a)と、この第一帯板部(17a)の一端から折り返し連設されると共に前記締結用ボルト(3)が貫通する第二貫通孔(17b)を備え且つ前記コ形本体(2)の底板部(6)の外側に隣接する第二帯板部(17b)と、この第二帯板部(17b)の遊端部から折曲連設され且つ前記コ形本体(2)の両側板部(7,8)の内の一方の外側面に隣接する第三帯板部(17c)を備えた構造とすることにより、付勢バネ(板バネ材)が締結用ボルトを中心に回転するのを前記第三帯板部によって防止出来るので、締結用ボルトから横側方に突出することになる第一帯板部と第二帯板部との間の折り返し部の位置が一定になり、種々の面で取り扱いが容易になる。   When the urging spring is composed of a leaf spring material as described above, the leaf spring material (17) includes a first through hole (18) through which the fastening bolt (3) passes and the fastening nut ( 4) a first strip plate portion (17a) adjacent to the bottom surface of the first strip plate portion (17a) and a second through-hole through which the fastening bolt (3) passes and is continuously connected from one end of the first strip plate portion (17a). 17b) and a second strip plate portion (17b) adjacent to the outside of the bottom plate portion (6) of the U-shaped main body (2), and a bent end from the free end portion of the second strip plate portion (17b). By providing a structure including a third belt plate portion (17c) adjacent to one outer side surface of both side plate portions (7, 8) of the U-shaped main body (2), a biasing spring ( Since the third strip plate portion can prevent the leaf spring material) from rotating around the fastening bolt, the first strip plate portion and the second strip plate portion that protrude laterally from the fastening bolt. The position of the folded part between the Easy to handle in various ways.

又、前記締結用ボルト(3)の頭部は、前記コ形本体(2)の両側板部(7,8)の内側面に隣り合う両側辺を備えた扁平板状に形成し、この扁平板状頭部(13)の両側面に楔状に張り出す前記棒鋼締結部(14)を形成し、前記コ形本体(2)には、前記扁平板状頭部(13)に隣接して前記締結用ボルト(3)を回り止めする突起部(15a〜16b)を設けることが出来る。この構成によれば、前記締結用ボルトは、その頭部を指先で把持して自転を阻止しておかなくとも、楔状に張り出す前記棒鋼締結部がコ形本体の両側板部間を横断する向きの棒鋼に対面する状態に保持されるので、締結用ボルトを共回りさせることなく締結用ナットの捻じ込み操作を行えることと相まって、締結用ナットの捻じ込み操作による棒鋼の締結操作を容易且つ確実に行うことが出来る。   Further, the head of the fastening bolt (3) is formed in a flat plate shape having both sides adjacent to the inner surface of the side plates (7, 8) of the U-shaped body (2). The steel bar fastening portion (14) projecting in a wedge shape is formed on both side surfaces of the flat plate-shaped head (13), and the U-shaped main body (2) is adjacent to the flat plate-shaped head (13). Protrusions (15a to 16b) for preventing the fastening bolts (3) from rotating can be provided. According to this configuration, even if the fastening bolt does not prevent its rotation by gripping its head with a fingertip, the steel bar fastening portion extending in a wedge shape crosses between both side plate portions of the U-shaped main body. Since it is held in a state facing the facing steel bar, it is easy to perform the fastening operation of the steel bar by the screwing operation of the fastening nut, coupled with the fact that the fastening nut can be screwed in without rotating the fastening bolt together. It can be done reliably.

この場合の前記突起部は、前記扁平板状頭部の両側辺の内の一方のみを挟む2つの突起部で構成しても良いし、前記扁平板状頭部の両側辺の同一側の側面に隣接する2つの突起部で構成しても良いが、前記扁平板状頭部の両側辺を各別に挟むように一対ずつ、合計4つの突起部(15a〜16b)で構成するのが望ましい。   In this case, the protrusion may be composed of two protrusions that sandwich only one of both sides of the flat plate-shaped head, or the same side surface on both sides of the flat plate-shaped head. However, it is desirable to form a pair of four protrusions (15a to 16b) in pairs so as to sandwich the both sides of the flat plate-shaped head.

図1は、棒鋼並列接続金具の正面図である。FIG. 1 is a front view of a steel bar parallel connection fitting. 図2は、同上金具の側面図である。FIG. 2 is a side view of the same metal fitting. 図3は、棒鋼並列接続金具から取り外した締結用ボルトナットのボルトの平面図である。FIG. 3 is a plan view of the bolt of the fastening bolt and nut removed from the steel bar parallel connection fitting. 図4は、同上ボルトの側面図である。FIG. 4 is a side view of the bolt. 図5は、同上ボルトの正面図である。FIG. 5 is a front view of the bolt. 図6は、棒鋼並列接続金具から取り外したバネの斜視図である。FIG. 6 is a perspective view of the spring removed from the steel bar parallel connection fitting. 図7は、棒鋼並列接続金具の使用準備段階の正面図である。FIG. 7 is a front view of a use preparation stage of the steel bar parallel connection fitting. 図8は、棒鋼並列接続金具の使用準備段階の側面図である。FIG. 8 is a side view of the use preparation stage of the steel bar parallel connection fitting. 図9は、棒鋼並列接続金具の使用状態を示す正面図である。FIG. 9 is a front view showing a usage state of the steel bar parallel connection fitting. 図10は、棒鋼並列接続金具の使用状態を示す縦断正面図である。FIG. 10 is a longitudinal sectional front view showing a usage state of the steel bar parallel connection fitting. 図11は、棒鋼並列接続金具の使用状態を示す側面図である。FIG. 11: is a side view which shows the use condition of a steel bar parallel connection metal fitting. 図12は、棒鋼並列接続金具の使用状態を示す縦断側面図である。FIG. 12 is a longitudinal side view showing a usage state of the steel bar parallel connection fitting. 図13は、棒鋼並列接続金具の使用状態を示す底面図である。FIG. 13 is a bottom view showing a usage state of the steel bar parallel connection fitting. 図14は、棒鋼並列接続金具の使用状態を示す横断底面図である。FIG. 14 is a transverse bottom view showing a usage state of the steel bar parallel connection fitting.

図1及び図2において、1は本発明に係る棒鋼並列接続金具であって、コ形本体2と締結用ボルト3、締結用ナット4、及び付勢バネ5から構成されている。コ形本体2は、必要な板厚の板材の裁断と曲げ加工によって構成されたもので、長方形状の底板部6と、この底板部6の両長辺全域から同一側へ直角に折曲された両側板部7,8を備え、底板部6の中央位置には貫通孔9が設けられている。両側板部7,8のそれぞれには、両側板部7,8の前後方向長さの中央位置で底板部6と平行な外側辺から切り込み形成された凹窪部10と、各凹窪部10によって形成された前後一対の突出片11が設けられている。   1 and 2, reference numeral 1 denotes a steel bar parallel connection fitting according to the present invention, which includes a U-shaped main body 2, a fastening bolt 3, a fastening nut 4, and a biasing spring 5. The U-shaped main body 2 is formed by cutting and bending a plate material having a necessary thickness, and is bent at right angles from the rectangular bottom plate portion 6 and the entire long side of the bottom plate portion 6 to the same side. Both side plate portions 7 and 8 are provided, and a through hole 9 is provided at the center position of the bottom plate portion 6. Each of the side plate portions 7 and 8 has a recessed portion 10 formed by cutting from the outer side parallel to the bottom plate portion 6 at the center position of the length in the front-rear direction of the both side plate portions 7 and 8, and each recessed portion 10. A pair of front and rear projecting pieces 11 are provided.

これら合計4つの突出片11は、その基部を折曲位置として全体が内側にほぼ45度の角度に折曲されて、底板部6の短辺方向に互いに対面する突出片11の先端どうしが互いに接近するように構成されており、凹窪部10は、これら合計4つの突出片11の底板部6に対して垂直な前後一対の内側辺10a,10bと底辺10cによって形成されている。尚、凹窪部10の底辺10cには、当該底辺10cを前後方向に2分割する台形状突起部10dが形成されている。   The total of these four protruding pieces 11 are bent at an angle of approximately 45 degrees inward with the base portion as the bent position, and the tips of the protruding pieces 11 facing each other in the short side direction of the bottom plate portion 6 are mutually connected. The recessed portion 10 is formed by a pair of front and rear inner sides 10a, 10b and a bottom side 10c perpendicular to the bottom plate portion 6 of the total four protruding pieces 11. A trapezoidal protrusion 10d that divides the base 10c into two in the front-rear direction is formed on the base 10c of the recessed part 10.

図3〜図5に示すように、締結用ボルト3は、螺軸部12と頭部13から構成されている。頭部13は、図1及び図2に示すように、螺軸部12を直径方向両側から加圧して、底板部6に対する両側板部7,8の高さとほぼ同一の軸心方向長さを有する扁平板状に成型され、この扁平板状頭部13の平坦な両側面に、この扁平板状頭部13の先端側ほど突出高さと幅が大きくなる断面山形状で互いに並列する2本の楔状突条14a,14bがそれぞれ一体成型され、これら楔状突条14a,14bによって、扁平板状頭部13の両側面それぞれに棒鋼締結部14が形成されている。尚、楔状突条14a,14bの外端部間には、これら両楔状突条14a,14bどうしを最大高さ位置で互いに連結一体化する横方向連結部14cが一体成型されている。   As shown in FIGS. 3 to 5, the fastening bolt 3 includes a screw shaft portion 12 and a head portion 13. As shown in FIGS. 1 and 2, the head 13 pressurizes the screw shaft portion 12 from both sides in the diametrical direction so that the axial direction length is substantially the same as the height of the side plate portions 7 and 8 with respect to the bottom plate portion 6. The flat plate-shaped head portion 13 is formed in a flat plate shape on both side surfaces of the flat plate-shaped head portion 13 and parallel to each other in a cross-sectional mountain shape in which the protruding height and width increase toward the distal end side of the flat plate-shaped head portion 13. The wedge-shaped ridges 14 a and 14 b are integrally formed, and the bar-shaped fastening portions 14 are formed on both side surfaces of the flat plate-shaped head portion 13 by the wedge-shaped ridges 14 a and 14 b. In addition, between the outer ends of the wedge-shaped ridges 14a and 14b, a lateral connection portion 14c that integrally connects the wedge-shaped ridges 14a and 14b with each other at the maximum height position is integrally formed.

前記締結用ボルト3は、図1及び図2に示すように、扁平板状頭部13の扁平板面がコ形本体2の底板部6の短辺方向と平行になる向きで、螺軸部12を底板部6の貫通孔9に内側から挿通し、底板部6から外側に突出する螺軸部12の遊端に締結用ナット4が螺嵌されることによって、コ形本体2に組み付けられるが、貫通孔9に対する螺軸部12の挿入最大深さは、扁平板状頭部13の基部が貫通孔9の内周縁に当接した深さに制限される。このとき当該扁平板状頭部13のほぼ全体がコ形本体2の両側板部7,8間に嵌まり込んだ状態になると共に、扁平板状頭部13の下半部の両側辺が、コ形本体2の両側板部7,8の凹窪部10より底板部6側の内側面に隣接する状態になるので、前記両側板部7,8の内側面に、前記扁平板状頭部13の下半部の両側辺を前後両側から挟むそれぞれ一対の回り止め用突起部15a,15b及び16a,16bが押し出し成形されている。尚、螺軸部12から締結用ナット4が外れないように、螺軸部12に締結用ナット4をカシメなどにより固着するか又は、螺軸部12の遊端に、ネジ山を潰すなどして締結用ナット4の外れ止め部を設けておくことが出来る。   As shown in FIGS. 1 and 2, the fastening bolt 3 has a screw shaft portion in a direction in which the flat plate surface of the flat plate head portion 13 is parallel to the short side direction of the bottom plate portion 6 of the U-shaped main body 2. 12 is inserted into the through-hole 9 of the bottom plate portion 6 from the inside, and the fastening nut 4 is screwed to the free end of the screw shaft portion 12 protruding outward from the bottom plate portion 6 to be assembled to the U-shaped main body 2. However, the maximum insertion depth of the screw shaft portion 12 with respect to the through hole 9 is limited to a depth at which the base portion of the flat plate-shaped head portion 13 is in contact with the inner peripheral edge of the through hole 9. At this time, almost the entire flat plate-like head 13 is in a state of being fitted between both side plate portions 7 and 8 of the U-shaped main body 2, and both side sides of the lower half of the flat plate-like head 13 are Since it will be in the state adjacent to the inner surface by the side of the bottom plate part 6 from the recessed part 10 of the both-sides board parts 7 and 8 of the U-shaped main body 2, the said flat-plate-shaped head will be in the inner side surface of the said both-sides board parts 7 and A pair of anti-rotation projections 15a, 15b and 16a, 16b sandwiching both sides of the lower half of the 13 from the front and rear sides are extruded. In order to prevent the fastening nut 4 from being detached from the screw shaft portion 12, the fastening nut 4 is fixed to the screw shaft portion 12 by caulking or the like, or a screw thread is crushed at the free end of the screw shaft portion 12. Thus, it is possible to provide a locking portion for the fastening nut 4.

付勢バネ5は、図1、図2、及び図6に示すように、締結用ボルト3の螺軸部12の直径の2倍程度の横巾を有する帯状板ばね材17から成るものであって、外端部に前記締結用ボルト3の螺軸部11を貫通させることが出来る直径の第一貫通孔18を備え且つ前記締結用ナット4の底面に隣接する第一帯板部17aと、この第一帯板部17aの一端から折り返し連設されると共に前記締結用ボルト3の螺軸部12を貫通させることが出来る、帯状板ばね材17の長さ方向に長い矩形状の第二貫通孔19を備え且つ前記コ形本体2の底板部6の外側に隣接する第二帯板部17bと、この第二帯板部17bの遊端部から折曲連設され且つ前記コ形本体2の一方の側板部7の外側面に隣接する第三帯板部17cを備えている。この付勢バネ5は、前記締結用ボルト3の螺軸部12をコ形本体2の底板部6の貫通孔9に内側から挿通させるときに、第一帯板部17aと第二帯板部17bとを弾性に抗して互いに接近させるように弾性変形させた状態で、第二貫通孔19と第一貫通孔18に前記貫通孔9から突出する締結用ボルト3の螺軸部12を挿通させ、第一貫通孔18から突出する螺軸部12の遊端に締結用ナット4を螺嵌させることにより組み付けられる。   As shown in FIGS. 1, 2, and 6, the urging spring 5 is composed of a strip-shaped leaf spring material 17 having a lateral width that is about twice the diameter of the screw shaft portion 12 of the fastening bolt 3. A first band plate portion 17a having a first through hole 18 having a diameter capable of penetrating the screw shaft portion 11 of the fastening bolt 3 at the outer end portion and adjacent to the bottom surface of the fastening nut 4. A rectangular second through-hole that is long in the length direction of the strip-shaped leaf spring material 17 and is connected continuously from one end of the first strip plate portion 17a and can penetrate the screw shaft portion 12 of the fastening bolt 3. A second strip plate portion 17b provided with a hole 19 and adjacent to the outside of the bottom plate portion 6 of the U-shaped main body 2, and a bent end portion of the second strip plate portion 17b, and the U-shaped main body 2 The third belt plate portion 17c adjacent to the outer surface of the one side plate portion 7 is provided. The urging spring 5 is provided with a first strip plate portion 17a and a second strip plate portion when the screw shaft portion 12 of the fastening bolt 3 is inserted through the through hole 9 of the bottom plate portion 6 of the U-shaped main body 2 from the inside. 17b is inserted into the second through hole 19 and the first through hole 18 with the screw shaft portion 12 of the fastening bolt 3 protruding from the through hole 9 in a state of being elastically deformed so as to approach each other. The fastening nut 4 is screwed into the free end of the screw shaft portion 12 protruding from the first through hole 18 and assembled.

以上にように付勢バネ5を組み付けて棒鋼並列接続金具1を完成させた状態では、付勢バネ5の付勢力、即ち、第一帯板部17aと第二帯板部17bとが互いに離間しようとする弾性力によって、締結用ボルト3が、その扁平板状頭部13がコ形本体2の底板部6に当接する限界まで両側板部7,8間に嵌まり込んだ作用位置に保持されている。このとき図示の実施例では、図2に示すように付勢バネ5の第一帯板部17aが締結用ナット4の底面に面接触する、コ形本体2の底板部6と平行な状態にあって、付勢バネ5の第二帯板部17bが、第一帯板部17aの端部からコ形本体2の底板部6と側板部7との間の出隅部に向かう斜め姿勢となり、第三帯板部17cがコ形本体2の側板部7の外側に隣接する状態になっている。しかし、付勢バネ5の付勢力で締結用ボルト3が作用位置に保持されているときの付勢バネ5の姿勢は、上記の図2に示す姿勢に限定されない。例えば、第一帯板部17aと第二帯板部17bとが締結用ボルト3の螺軸部12に対して横向きV字形姿勢をとり、第一帯板部17aと第二帯板部17bとが、締結用ナット4の底面とコ形本体2の底板部6とに対して斜めになる状態に構成しても良いし、第一帯板部17aが締結用ナット4の底面に対して斜めになると共に、第二帯板部17bがコ形本体2の底板部6と面接触する平行姿勢になるように構成しても良い。   In the state where the urging spring 5 is assembled as described above to complete the steel bar parallel connection fitting 1, the urging force of the urging spring 5, that is, the first strip portion 17a and the second strip portion 17b are separated from each other. The fastening bolt 3 is held in the working position where it is fitted between the side plate portions 7 and 8 to the limit where the flat plate-like head portion 13 abuts against the bottom plate portion 6 of the U-shaped main body 2 by the elastic force to be applied. Has been. At this time, in the illustrated embodiment, as shown in FIG. 2, the first strip plate portion 17 a of the urging spring 5 is in surface contact with the bottom surface of the fastening nut 4 and is in a state parallel to the bottom plate portion 6 of the U-shaped main body 2. And the 2nd strip part 17b of the urging | biasing spring 5 becomes a diagonal attitude | position which goes to the protrusion corner part between the bottom plate part 6 and the side plate part 7 of the U-shaped main body 2 from the edge part of the 1st strip board part 17a. The third band plate portion 17 c is adjacent to the outside of the side plate portion 7 of the U-shaped main body 2. However, the posture of the biasing spring 5 when the fastening bolt 3 is held at the operating position by the biasing force of the biasing spring 5 is not limited to the posture shown in FIG. For example, the first strip plate portion 17a and the second strip plate portion 17b take a lateral V-shaped posture with respect to the screw shaft portion 12 of the fastening bolt 3, and the first strip plate portion 17a and the second strip plate portion 17b However, it may be configured to be inclined with respect to the bottom surface of the fastening nut 4 and the bottom plate portion 6 of the U-shaped main body 2, and the first strip plate portion 17 a is inclined with respect to the bottom surface of the fastening nut 4. In addition, the second band plate portion 17b may be configured to be in a parallel posture in surface contact with the bottom plate portion 6 of the U-shaped main body 2.

以下、使用方法を説明すると、最初に図1及び図2に示すように、付勢バネ5の付勢力で締結用ボルト3が作用位置に保持されている初期状態にある棒鋼並列接続金具1のコ形本体2を片手で把持した状態で、そのコ形本体2を把持する片手の指先で、締結用ナット4又は当該締結用ナット4から少し突出している螺軸部12の端面を、付勢バネ5の付勢力に抗してコ形本体2の底板部6の方に押し込む。この結果、前記作用位置にある締結用ボルト3が、コ形本体2の両側板部7,8間から扁平板状頭部13が外方に脱出する方向に移動することになる。このとき、扁平板状頭部13の下半部の両側辺が両側板部7,8側のそれぞれ一対の回り止め用突起部15a,15b間及び16a,16b間に嵌合して回り止めされているので、扁平板状頭部13は、その両側辺がコ形本体2の両側板部7,8の内側面に隣接する向きを保持した状態で移動することになる。   Hereinafter, the method of use will be described. First, as shown in FIG. 1 and FIG. 2, the steel bar parallel connection fitting 1 in the initial state in which the fastening bolt 3 is held in the operating position by the biasing force of the biasing spring 5. In a state where the U-shaped main body 2 is held with one hand, the fastening nut 4 or the end surface of the screw shaft portion 12 slightly protruding from the fastening nut 4 is urged with the fingertip of one hand holding the U-shaped main body 2. The spring 5 is pushed toward the bottom plate portion 6 of the U-shaped main body 2 against the urging force of the spring 5. As a result, the fastening bolt 3 at the operating position moves from the side plate portions 7 and 8 of the U-shaped main body 2 in the direction in which the flat plate-shaped head portion 13 escapes outward. At this time, both sides of the lower half of the flat-plate-shaped head 13 are fitted and prevented from rotating between the pair of anti-rotation projections 15a and 15b and between the pair of anti-rotation projections 15a and 15b and 16a and 16b. Therefore, the flat plate-like head portion 13 moves in a state in which the both side sides thereof hold the direction adjacent to the inner side surfaces of the both side plate portions 7 and 8 of the U-shaped main body 2.

上記操作により、図7及び図8に示すように、締結用ナット4とコ形本体2の底板部6の間で付勢バネ5の第一帯板部17aと第二帯板部17bとが互いに平行に重なる状態に挟み付けられて締結用ボルト3の移動が阻止され、締結用ボルト3の扁平板状頭部13の全体が、コ形本体2の両側板部7,8の凹窪部10の底辺10c(台形状突起部10d)から外側に突出する状態になって、締結用ボルト3が非作用位置に切り換わる。この過程において、扁平板状頭部13の両側辺は、両側板部7,8側のそれぞれ一対の回り止め用突起部15a,15b間及び16a,16b間から外方に離脱しているが、指先が締結用ナット4又は螺軸部12の端面に圧接しているので、締結用ボルト3が回転することは無い。   By the above operation, as shown in FIGS. 7 and 8, the first strip plate portion 17 a and the second strip plate portion 17 b of the biasing spring 5 are moved between the fastening nut 4 and the bottom plate portion 6 of the U-shaped main body 2. The fastening bolt 3 is prevented from moving by being sandwiched in a state of being overlapped in parallel with each other, and the entire flat plate-like head portion 13 of the fastening bolt 3 is recessed in the side plate portions 7 and 8 of the U-shaped main body 2. 10 is protruded outward from the bottom 10c (trapezoidal protrusion 10d), and the fastening bolt 3 is switched to the non-operation position. In this process, both sides of the flat plate-shaped head 13 are separated outward from between the pair of anti-rotation projections 15a and 15b and between 16a and 16b on the side plates 7 and 8, respectively. Since the fingertip is in pressure contact with the fastening nut 4 or the end surface of the screw shaft portion 12, the fastening bolt 3 does not rotate.

以上のように操作して締結用ボルト3を非作用位置に切り換えたならば、遊んでいる反対側の手で図7及び図8にそれぞれ仮想線で示すように、互いに接続する2本の棒鋼W1,W2を、その端部が一定長さ互いに並列する状態にして、各棒鋼W1,W2の端部を、コ形本体2における両側板部7,8間を横断する向きで、締結用ボルト3の扁平板状頭部13の前後両側で凹窪部10内に嵌合させる。凹窪部10内に嵌合した各棒鋼W1,W2は、扁平板状頭部13の棒鋼締結部14より螺軸部12側に外れた位置で扁平板状頭部13の両側に位置している。   When the fastening bolt 3 is switched to the non-acting position by operating as described above, the two bars connected to each other as shown by phantom lines in FIGS. Fastening bolts with W1 and W2 in a state where their end portions are parallel to each other for a certain length, and the end portions of the steel bars W1 and W2 crossing between both side plate portions 7 and 8 in the U-shaped main body 2 3 is fitted into the recessed portion 10 on both front and rear sides of the flat plate-shaped head portion 13. The steel bars W1 and W2 fitted in the recessed part 10 are located on both sides of the flat plate-like head 13 at positions dislocated to the screw shaft part 12 side from the steel bar fastening part 14 of the flat plate-like head 13. Yes.

次に締結用ナット4を締め込み方向に回転操作して、締結用ボルト3をコ形本体2の底板部6から引き抜くように操作すると、締結用ボルト3の扁平板状頭部13が並列する2本の棒鋼W1,W2間をコ形本体2の底板部6側へ移動し、当該扁平板状頭部13の前後両側の棒鋼締結部14が棒鋼W1,W2間に進入することになる。この結果、図9〜図14に詳細に示すように、締結用ナット4が付勢バネ5の第一帯板部17aと第二帯板部17bをコ形本体2の底板部6との間で挟み付け、第一帯板部17aと第二帯板部17bとが互いに重なった状態で締結用ナット4とコ形本体2の底板部6との間で挟持固定され、更に締結用ボルト3の扁平板状頭部13の基部がコ形本体2の底板部6の貫通孔9の周囲に当接して、それ以上の締結用ボルト3の引き込みが出来なくなることにより、締結用ナット4の締め付け操作が完了する。この過程において、棒鋼W1,W2間に進入する扁平板状頭部13の前後両側の棒鋼締結部14における楔状突条14a,14bは、棒鋼W1,W2を凹窪部10の内側辺10a,10bと底辺10cとの間の入隅部に押し込みながら、これら棒鋼W1,W2の周面に食い込むことになる。   Next, when the fastening nut 4 is rotated in the tightening direction and the fastening bolt 3 is pulled out from the bottom plate portion 6 of the U-shaped main body 2, the flat plate heads 13 of the fastening bolt 3 are arranged in parallel. The two steel bars W1 and W2 are moved to the bottom plate 6 side of the U-shaped main body 2, and the steel bar fastening portions 14 on both the front and rear sides of the flat plate-like head 13 enter between the steel bars W1 and W2. As a result, as shown in detail in FIGS. 9 to 14, the fastening nut 4 connects the first strip plate portion 17 a and the second strip plate portion 17 b of the urging spring 5 to the bottom plate portion 6 of the U-shaped main body 2. Are clamped between the fastening nut 4 and the bottom plate portion 6 of the U-shaped main body 2 in a state where the first strip plate portion 17a and the second strip plate portion 17b overlap each other, and the fastening bolt 3 When the base portion of the flat plate-shaped head portion 13 abuts around the through hole 9 of the bottom plate portion 6 of the U-shaped main body 2 and the fastening bolt 3 cannot be pulled further, the fastening nut 4 is tightened. The operation is complete. In this process, the wedge-shaped ridges 14a and 14b in the steel bar fastening portions 14 on both front and rear sides of the flat plate-like head 13 entering between the steel bars W1 and W2 are formed by connecting the steel bars W1 and W2 to the inner sides 10a and 10b of the recessed part 10. And biting into the peripheral surfaces of the steel bars W1 and W2 while being pushed into the corner between the base 10c and the bottom 10c.

上記作用により、2本の並列する棒鋼W1,W2は、締結用ボルト3によってコ形本体2に締結一体化され、凹窪部10から外側へ離脱することは、コ形本体2の両側板部7,8における凹窪部10の内側辺10a,10bと、締結用ボルト3の扁平板状頭部13における棒鋼締結部14の楔状突条14a,14bとの間の間隙が、棒鋼W1,W2の直径より十分に狭まっているので、完全に阻止されている。又、棒鋼W1,W2がコ形本体2に対して軸方向に相対移動することも、これら棒鋼W1,W2の周面に対し、締結用ボルト3の扁平板状頭部13における棒鋼締結部14の楔状突条14a,14bが食い込んでいることにより、完全に阻止されている。   Due to the above action, the two parallel steel bars W1 and W2 are fastened and integrated with the U-shaped main body 2 by the fastening bolts 3 and are separated from the recessed portion 10 to the outside. 7 and 8, the gaps between the inner sides 10 a and 10 b of the recessed portion 10 and the wedge-shaped ridges 14 a and 14 b of the steel bar fastening portion 14 in the flat plate-like head portion 13 of the fastening bolt 3 are steel bars W 1 and W 2. Since it is sufficiently narrower than the diameter, it is completely blocked. Also, the steel bars W1 and W2 move in the axial direction relative to the U-shaped main body 2, and the steel bar fastening portion 14 of the flat plate head 13 of the fastening bolt 3 with respect to the peripheral surface of the steel bars W1 and W2 is also possible. The wedge-shaped protrusions 14a and 14b are completely blocked by the bite.

尚、締結用ボルト3の扁平板状頭部13の両側に設けられる棒鋼締結部14の楔状突条14a,14bの本数は、上記実施例の片面2本に限らず、1本でも3本でも良い。又、コ形本体2の両側板部7,8に凹窪部10を形成する突出片11は、内側へ45度程度傾斜させて、棒鋼W1,W2の凹窪部10を横断する部分が、締結用ボルト3の扁平板状頭部13の両側に設けられている棒鋼締結部14の楔状突条14a,14bによって、コ形本体2の両側板部7,8間に凹入するように変形するのを抑制出来るように構成しているが、当該突出片11の傾斜角度は最大90度まで大きくすることも出来るし、場合によっては、傾斜させないでコ形本体2の両側板部7,8と面一に構成することも可能である。   The number of wedge-shaped ridges 14a and 14b of the steel bar fastening portion 14 provided on both sides of the flat plate-like head portion 13 of the fastening bolt 3 is not limited to two on one side of the above embodiment, and may be one or three. good. Moreover, the protruding piece 11 which forms the recessed part 10 in the both-sides board parts 7 and 8 of the U-shaped main body 2 inclines about 45 degree | times inside, and the part which crosses the recessed part 10 of steel bar W1, W2 is The wedge-shaped protrusions 14a and 14b of the steel bar fastening portion 14 provided on both sides of the flat plate head portion 13 of the fastening bolt 3 are deformed so as to be recessed between the both side plate portions 7 and 8 of the U-shaped main body 2. However, the angle of inclination of the projecting piece 11 can be increased up to a maximum of 90 degrees. In some cases, both side plates 7 and 8 of the U-shaped main body 2 are not inclined. It is also possible to configure the same.

更に、使用する付勢バネ5は、先にも述べたように、帯状板バネ材17から成るものに限定されないが、その弾性の強さは、使用前の段階で締結用ボルト3を作用位置まで引き込むことが出来ると共に、当該締結用ボルト3を指先での押し込み操作で作用位置から非作用位置に切り換えた後に押し込み操作から開放したとき、再び締結用ボルト3を、凹窪部10内に嵌め込んだ棒鋼W1,W2をコ形本体2から外れない程度に保持出来る弾性復帰力で作用位置側へ復帰移動させることが出来る程度のものであれば良く、それ以上の繰り返し使用に耐え得るほどの弾性力を持たない、換言すれば多少の塑性変形を伴うものであっても実用上問題は無い。   Further, as described above, the biasing spring 5 to be used is not limited to the one made of the strip-shaped leaf spring material 17, but its elastic strength is such that the fastening bolt 3 is moved to the working position before use. When the fastening bolt 3 is released from the pushing operation after the fastening bolt 3 is switched from the working position to the non-working position by pushing the fingertip, the fastening bolt 3 is again fitted in the recessed portion 10. It is sufficient that the steel bars W1 and W2 can be moved back to the operating position with an elastic return force that can hold the steel bars W1 and W2 so as not to be detached from the U-shaped body 2, and can withstand repeated use beyond that. Even if it does not have elastic force, in other words, it involves some plastic deformation, there is no practical problem.

本発明の棒鋼並列接続金具は、建設現場などにおいて、1本では長さ不足の棒鋼を2本、端部どうしを互いに並列させた状態で接続一体化する手段として活用出来る。   The steel bar parallel connection metal fitting of the present invention can be used as a means for connecting and integrating two steel bars that are insufficient in length and having the ends parallel to each other at a construction site or the like.

1 棒鋼並列接続金具
2 コ形本体
3 締結用ボルト
4 締結用ナット
5 付勢バネ
6 底板部
7,8 側板部
9 貫通孔
10 凹窪部
10a,10b 内側辺
10c 底辺
10d 台形状突起部
11 突出片
12 螺軸部
13 扁平板状頭部
14 棒鋼締結部
14a,14b 楔状突条
14c 横方向連結部
15a〜16b 回り止め用突起部
17 帯状板ばね材
17a 第一帯板部
17b 第二帯板部
17c 第三帯板部
18 第一貫通孔
19 第二貫通孔
W1,W2 棒鋼
DESCRIPTION OF SYMBOLS 1 Steel bar parallel connection metal fitting 2 Co-shaped main body 3 Fastening bolt 4 Fastening nut 5 Energizing spring 6 Bottom plate part 7, 8 Side plate part 9 Through-hole 10 Recessed part 10a, 10b Inner side 10c Bottom side 10d Trapezoidal protrusion part 11 Protrusion Piece 12 Screw shaft portion 13 Flat plate head portion 14 Steel bar fastening portion 14a, 14b Wedge-like protrusion 14c Lateral connection portion 15a-16b Non-rotating projection portion 17 Strip-shaped leaf spring material 17a First strip plate portion 17b Second strip plate Part 17c Third strip 18 First through hole 19 Second through hole W1, W2 Steel bar

Claims (5)

コ形本体と、このコ形本体の底板部を貫通する締結用ボルトと、前記コ形本体の底板部の外側で前記締結用ボルトの遊端側に螺嵌する締結用ナットから構成され、前記コ形本体の両側板部には凹窪部が形成されると共に、前記締結用ボルトの頭部両側には楔状に張り出す棒鋼締結部が形成され、前記締結用ボルトは、前記棒鋼締結部がコ形本体の両側板部間から外側に突出して前記締結用ボルトと前記凹窪部の両内側辺との間に棒鋼を嵌入出来る非作用位置と、前記棒鋼締結部が前記凹窪部の両内側辺との間で2本の並列状態の棒鋼を挟持する作用位置との間で出退自在に構成された棒鋼並列接続金具において、
前記締結用ボルトを前記作用位置に引き込む付勢バネが設けられ、前記締結用ナットを捩じ込むことにより、前記非作用位置にある前記ボルトを前記付勢バネの付勢力に抗して前記非作用位置から前記作用位置に切り換えられるように構成された、棒鋼並列接続金具。
A U-shaped main body, a fastening bolt that penetrates the bottom plate portion of the U-shaped main body, and a fastening nut that is screwed onto the free end side of the fastening bolt outside the bottom plate portion of the U-shaped main body, Recesses are formed on both side plates of the U-shaped main body, and steel bar fastening portions are formed on both sides of the head portion of the fastening bolt so as to be wedge-shaped, and the fastening bolt has the steel bar fastening portion. A non-operating position in which a steel bar can be inserted between the fastening bolts and both inner sides of the concave part, projecting outward from between both side plate parts of the U-shaped main body, and the steel bar fastening part is located on both sides of the concave part. In the steel bar parallel connection bracket configured to be freely retractable between the inner side and the working position for sandwiching the two steel bars in parallel with each other,
An urging spring for pulling the fastening bolt into the operating position is provided, and by screwing the fastening nut, the bolt in the non-operating position is resisted against the urging force of the urging spring. A steel bar parallel connection fitting configured to be switched from the working position to the working position.
前記付勢バネは、帯状の板バネ材をV字形に曲げたものから成り、この付勢バネを前記コ形本体の底板部と前記締結用ナットとの間に介装した、請求項1に記載の棒鋼並列接続金具。   The said biasing spring consists of what bent the strip | belt-shaped leaf | plate spring material in the V shape, and this biasing spring was interposed between the bottom plate part of the said U-shaped main body, and the said nut for a fastening. Steel bar parallel connection bracket as described. 前記付勢バネは、板バネ材から成り、この板バネ材は、前記締結用ボルトが貫通する第一貫通孔を備え且つ前記締結用ナットの底面に隣接する第一帯板部と、この第一帯板部の一端から折り返し連設されると共に前記締結用ボルトが貫通する第二貫通孔を備え且つ前記コ形本体の底板部の外側に隣接する第二帯板部と、この第二帯板部の遊端部から折曲連設され且つ前記コ形本体の両側板部の内の一方の外側面に隣接する第三帯板部を備えている、請求項1に記載の棒鋼並列接続金具。 The biasing spring is made of a leaf spring material, and the leaf spring material includes a first belt plate portion having a first through hole through which the fastening bolt passes and adjacent to a bottom surface of the fastening nut. A second band plate portion which is continuously provided from one end of the one band plate portion and has a second through hole through which the fastening bolt passes and which is adjacent to the outside of the bottom plate portion of the U-shaped main body; 2. The steel bar parallel connection according to claim 1, further comprising a third strip plate portion that is bent from a free end portion of the plate portion and is adjacent to one outer side surface of both side plate portions of the U-shaped main body. Hardware. 前記締結用ボルトの頭部は、前記コ形本体の両側板部の内側面に隣り合う両側辺を備えた扁平板状に形成され、この扁平板状頭部の両側面に楔状に張り出す前記棒鋼締結部が形成され、前記コ形本体には、前記扁平板状頭部に隣接して前記締結用ボルトを回り止めする突起部が設けられている、請求項1〜3の何れか1項に記載の棒鋼並列接続金具。   The head portion of the fastening bolt is formed in a flat plate shape having both sides adjacent to the inner side surface of the both side plate portions of the U-shaped main body, and the wedge-like projecting on both side surfaces of the flat plate head portion. A steel bar fastening portion is formed, and the U-shaped main body is provided with a protrusion that prevents the fastening bolt from rotating adjacent to the flat plate-shaped head. The steel bar parallel connection bracket described in 1. 前記突起部は、前記コ形本体の両側板部それぞれの内側面に、前記扁平板状頭部の両側辺を挟むように一対ずつ設けられている、請求項4に記載の棒鋼並列接続金具。
The steel bar parallel connection bracket according to claim 4, wherein the protrusions are provided in pairs on the inner side surfaces of both side plate portions of the U-shaped main body so as to sandwich both side sides of the flat plate-shaped head.
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