JP6883850B2 - Tools for bending pipe materials - Google Patents

Tools for bending pipe materials Download PDF

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JP6883850B2
JP6883850B2 JP2017110563A JP2017110563A JP6883850B2 JP 6883850 B2 JP6883850 B2 JP 6883850B2 JP 2017110563 A JP2017110563 A JP 2017110563A JP 2017110563 A JP2017110563 A JP 2017110563A JP 6883850 B2 JP6883850 B2 JP 6883850B2
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engaging groove
tubular member
support portion
work tool
bending work
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JP2018202453A (en
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啓介 島
啓介 島
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イザナギコム株式会社
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本発明は、電線を挿通する金属管などの管状部材を手動により所望の角度に折り曲げるときに使用される工具に関する。 The present invention relates to a tool used when manually bending a tubular member such as a metal tube through which an electric wire is inserted to a desired angle.

一般に、建築物を建築するときにおいて電気配線を挿通する金属製で管状である管状部材が建物の内部などに配設される。このとき、建築現場において、その現場の状況に応じて金属管を所望の角度に折り曲げる作業が行われ、手動で折り曲げるための工具が使用される。 Generally, when constructing a building, a tubular member made of metal through which electrical wiring is inserted is arranged inside the building or the like. At this time, at the construction site, the work of bending the metal pipe at a desired angle is performed according to the situation of the site, and a tool for manually bending is used.

例えば、特許文献１には、管材の先端に取り付けられ、曲げようとする管をその形状に沿って曲げる湾曲部とその湾曲の上方に管を掛ける係止部を備えるベンダが開示されている。 For example, Patent Document 1 discloses a vendor that is attached to the tip of a pipe material and includes a curved portion that bends the pipe to be bent along the shape and a locking portion that hangs the pipe on the curved portion.

特開２０１６−２０９９２７号公報Japanese Unexamined Patent Publication No. 2016-209927

しかしながら、先行特許文献１に記載のベンダでは、１種類の径の管しか曲げることができず、異なる径の管を曲げるためには異なる種類のベンダを複数用意する必要があり、複数用意するとなると費用が嵩み、持ち運ぶときの可搬性が悪く、取り換える手間から作業上の効率が良くないという課題があった。 However, the vendor described in Prior Patent Document 1 can bend only one type of pipe, and it is necessary to prepare a plurality of different types of vendors in order to bend pipes having different diameters. There are problems that the cost is high, the portability when carrying is poor, and the work efficiency is not good due to the trouble of replacing.

また、例えば径が異なる２種類の管を曲げるために、一のベンダに２種類の湾曲部及び係止部を設けるとしても、湾曲部及び係止部の外側面方向から管を差し込むためには管を左右の手の間で持ち替えたり差し込みにくい体勢で管を差し込んだりする必要があるなどの作業上の効率が良くないという課題があった。 Further, for example, even if two types of curved portions and locking portions are provided in one bender in order to bend two types of pipes having different diameters, in order to insert the pipes from the outer surface direction of the curved portions and the locking portions. There is a problem that the work efficiency is not good, such as the need to switch the pipe between the left and right hands and to insert the pipe in a position that makes it difficult to insert.

そのため、本発明において、異なる２種類の金属管などの管状部材を曲げることでき、常に外側面方向からその管状部材を差し込むことにより管を左右の手の間で持ち替えたり窮屈な体勢で管を差し込んだりせずに曲げることができる折曲げ作業用工具を提供することを目的とする。 Therefore, in the present invention, a tubular member such as two different types of metal pipes can be bent, and by always inserting the tubular member from the outer surface direction, the pipe can be held between the left and right hands or the pipe can be inserted in a cramped position. It is an object of the present invention to provide a bending work tool that can be bent without sagging.

〔１〕すなわち、本発明は、使用者が把持する把持部材Ｂを取り付ける挿通孔（１２）を有する基部（１）と、前記基部（１）の一端側に前記基部（１）に対して突出した湾曲状であり、管状部材（４）を保持する折曲げ部（２）を備え、前記折曲げ部（２）が、前記管状部材（４）と当接しうる第一係合溝（２１）と、前記第一係合溝（２１）に対向し、前記管状部材（４）を保持したときの前記管状部材（４）の長手方向における長さが前記第一係合溝（２１）よりも短く、前記管状部材（４）を支持する第一支持部（２２）と、前記管状部材（４）と当接しうる第二係合溝（２３）と、前記第二係合溝（２３）に対向し、前記管状部材（４）を保持したときの前記管状部材（４）の長手方向における長さが前記第二係合溝（２３）よりも短く、前記管状部材（４）を支持する第二支持部（２４）を有し、前記第一係合溝（２１）及び前記第二係合溝（２３）が、前記基部（１）側に向かって窪み曲率半径の異なる曲面状であり、前記第一支持部（２２）と前記第二支持部（２４）が、前記管状部材（４）を保持したときの前記管状部材（４）の長手方向において所定の間隔をあけて設けられていることを特徴とする折曲げ作業用工具である。 [1] That is, in the present invention, the base portion (1) having an insertion hole (12) for attaching the gripping member B to be gripped by the user and the one end side of the base portion (1) project with respect to the base portion (1). A first engaging groove (21) that has a curved shape and is provided with a bent portion (2) that holds the tubular member (4), and the bent portion (2) can come into contact with the tubular member (4). The length of the tubular member (4) in the longitudinal direction when facing the first engaging groove (21) and holding the tubular member (4) is larger than that of the first engaging groove (21). The first support portion (22) that is short and supports the tubular member (4), the second engaging groove (23) that can come into contact with the tubular member (4), and the second engaging groove (23). The length of the tubular member (4) in the longitudinal direction when facing the tubular member (4) is shorter than that of the second engaging groove (23), and the tubular member (4) is supported. It has two support portions (24), and the first engagement groove (21) and the second engagement groove (23) are curved toward the base portion (1) side and have different radius of curvature. The first support portion (22) and the second support portion (24) are provided at predetermined intervals in the longitudinal direction of the tubular member (4) when the tubular member (4) is held. It is a bending work tool characterized by this.

〔２〕そして、前記第一支持部（２２）及び前記第二支持部（２４）が、それぞれ前 記第一係合溝（２１）及び前記第二係合溝（２３）に対して膨み、前記第一支持部（２ ２）における前記第一係合溝（２１）と対向する部分において前記第一係合溝（２１） の曲率半径と略同等の曲率半径を有し、前記第二支持部（２４）における前記第二係合 溝（２３）と対向する部分において前記第二係合溝（２３）の曲率半径と略同等の曲率 半径を有しており、湾曲状であることを特徴とする前記〔１〕に記載の折曲げ作業用工 具である。

[2] Then, the first support portion (22) and the second support portion (24) bulge with respect to the first engagement groove (21) and the second engagement groove (23) described above, respectively. , The portion of the first support portion ( 22) facing the first engaging groove (21) has a radius of curvature substantially equal to the radius of curvature of the first engaging groove (21), and the second has a radius of curvature substantially equal to the radius of curvature of the second engaging groove (23) in a portion opposed to the second engaging groove (23) in the support section (24), that the curved The bending work tool according to the above [1].

〔３〕そして、前記基部（１）の一端側の内側面に雌螺子（１３）を有することを特徴とする前記〔１〕又は前記〔２〕に記載の折曲げ作業用工具である。 [3] The bending work tool according to the above [1] or the above [2], wherein the female screw (13) is provided on the inner surface of the base portion (1) on one end side.

〔４〕そして、前記第一係合溝（２１）及び前記第一支持部（２２）の間並びに前記第二係合溝（２３）及び前記第二支持部（２４）の間であって外側面側において、それぞれ開口部（３１・３２）を有することを特徴とする前記〔１〕から前記〔３〕のいずれかに記載の折曲げ作業用工具である。 [4] Then, between the first engaging groove (21) and the first supporting portion (22), and between the second engaging groove (23) and the second supporting portion (24), the outside. The bending work tool according to any one of the above [1] to [3], which has openings (31 and 32) on the side surface side, respectively.

〔５〕そして、前記基部（１）に前記把持部材（Ｂ）が取り付けられていることを特徴とする前記〔１〕から前記〔４〕のいずれかに記載の折曲げ作業用工具である。 [5] The bending work tool according to any one of the above [1] to the above [4], wherein the grip member (B) is attached to the base portion (1).

本発明の折曲げ作業用工具によれば、異異なる２種類の金属管などの管状部材を曲げることでき、常に外側面方向からその管状部材を差し込むことにより管を左右の手の間で持ち替えたり窮屈な体勢で管を差し込んだりせずに曲げることができる。 According to the bending work tool of the present invention, it is possible to bend a tubular member such as two different types of metal pipes, and by always inserting the tubular member from the outer surface direction, the pipe can be held between the left and right hands. You can bend it in a cramped position without inserting a tube.

本発明の一実施例における折曲げ作業用工具の正面側上方から見た斜視図である。It is a perspective view seen from the front side upper side of the bending work tool in one Example of this invention. 本発明の一実施例における折曲げ作業用工具の背面側下方から見た斜視図である。It is a perspective view seen from the lower part of the back side of the bending work tool in one Example of this invention. 本発明の一実施例における折曲げ作業用工具の正面図である。It is a front view of the bending work tool in one Example of this invention. 本発明の一実施例における折曲げ作業用工具のＡ−Ａ線断面図である。FIG. 5 is a cross-sectional view taken along the line AA of the bending work tool according to an embodiment of the present invention. 本発明の一実施例における折曲げ作業用工具の平面図である。It is a top view of the bending work tool in one Example of this invention. 本発明の一実施例における折曲げ作業用工具の使用状態を示す斜視図である。It is a perspective view which shows the use state of the bending work tool in one Example of this invention.

以下、本発明に係る折曲げ作業用工具に関する実施の形態について、添付の図面に基づいて詳しく説明する。なお、以下に説明する実施形態は、本発明を実施するに好ましい具体例であるから、技術的に種々の限定がなされているが、本発明は、以下の説明において特に発明を限定する旨が明記されていない限り、この形態に限定されるものではない。 Hereinafter, embodiments of the bending work tool according to the present invention will be described in detail with reference to the accompanying drawings. Since the embodiments described below are specific examples preferable for carrying out the present invention, various technical restrictions are made, but the present invention is intended to particularly limit the invention in the following description. Unless otherwise stated, it is not limited to this form.

本件出願において、上下方向及び前後方向は、図３における上下方向及び左右方向にそれぞれ対応するものである。 In the present application, the vertical direction and the front-back direction correspond to the vertical direction and the left-right direction in FIG. 3, respectively.

図１から図６は、本発明における折曲げ作業用工具の一実施例を示すものであり、斜視図、正面図、断面図、平面図及びそれらの使用状態に関する図である。 1 to 6 show an embodiment of a bending work tool in the present invention, and are a perspective view, a front view, a cross-sectional view, a plan view, and a view relating to a usage state thereof.

図１から図５に示すように、本発明の折曲げ作業用工具は、使用者が把持する把持部材Ｂを取り付ける挿通孔１２を有する基部１と、その上方に位置し基部１に対して突出したように湾曲する形状を有し、折り曲げようとする金属管などの管状部材４を保持する折曲げ部２を備えている。そして、図６に示すように、把持部材Ｂを基部１に取付け、そして、管状部材４を折曲げ部２に保持して適宜箇所を好適の角度に手動で湾曲させることができる。 As shown in FIGS. 1 to 5, the bending work tool of the present invention has a base portion 1 having an insertion hole 12 for attaching a gripping member B to be gripped by the user, and a base portion 1 located above the base portion 1 and projecting with respect to the base portion 1. It has a curved shape as described above, and includes a bent portion 2 for holding a tubular member 4 such as a metal tube to be bent. Then, as shown in FIG. 6, the gripping member B can be attached to the base portion 1, and the tubular member 4 can be held by the bent portion 2 to manually bend the portion at an appropriate angle.

基部１は、使用者が把持する把持部材Ｂを取り付ける部材であり、折曲げ作業用工具の基礎的な部分であり、略円筒形状を有している。そして、基部１の他端側である下方側から把持部材Ｂを挿通するための挿通孔１２が穿設されており把持部材Ｂを挿通孔１２に挿通することができる。さらに、挿通孔の奥である基部１の内面には雌螺子１３が螺設されており、把持部の一端側に設けられた雄螺子と螺合して着脱自在とされている。基部１と把持部材Ｂを着脱自在となる構造を有することにより、折曲げ作業用工具を嵩張らずに保管することができ、また、把持部材Ｂを他の折曲げ作業用工具に対しても使用することができるので使用する把持部材Ｂの本数を減らすことができる。なお、本実施形態において、基部１の内面には雌螺子１３が螺設されているが、他の実施形態において雄螺子とし、把持部材Ｂの一端側を雌螺子として着脱自在にすることもできるし、また、基部１の内面に突起を設けて把持部材Ｂの一端側にその突起と係合する係合部分を設けるなどの方法により基部１と把持部材Ｂを着脱自在とすることができるし、さらに、基部１の外側からボルトを差し込むなどして把持部材Ｂを固定して着脱自在とすることができる。また、図１、図２に示すように、基部１の側面に軽量化のために肉盗みとして孔を穿設することもできる。そして、図６に示すように、基部１に把持部材Ｂが予め取り付けられた状態で本発明に係る折曲げ作業用工具を流通することができる。 The base portion 1 is a member for attaching the gripping member B to be gripped by the user, is a basic part of a bending work tool, and has a substantially cylindrical shape. Then, an insertion hole 12 for inserting the grip member B is formed from the lower side which is the other end side of the base portion 1, and the grip member B can be inserted into the insertion hole 12. Further, a female screw 13 is screwed on the inner surface of the base portion 1 which is the back of the insertion hole, and is screwed with a male screw provided on one end side of the grip portion to be detachable. By having a structure in which the base portion 1 and the gripping member B are detachable, the bending work tool can be stored without being bulky, and the gripping member B can also be used for other bending work tools. Therefore, the number of gripping members B to be used can be reduced. In the present embodiment, the female screw 13 is screwed on the inner surface of the base 1, but in other embodiments, it may be a male screw and one end side of the gripping member B may be detachable as a female screw. Further, the base portion 1 and the gripping member B can be detached by providing a protrusion on the inner surface of the base portion 1 and providing an engaging portion that engages with the protrusion on one end side of the gripping member B. Further, the gripping member B can be fixed and detachable by inserting a bolt from the outside of the base 1. Further, as shown in FIGS. 1 and 2, holes can be formed in the side surface of the base 1 as a meat steal for weight reduction. Then, as shown in FIG. 6, the bending work tool according to the present invention can be distributed in a state where the gripping member B is attached to the base portion 1 in advance.

折曲げ部２は、折り曲げようとする金属管などの管状部材４と当接しうる第一係合溝２１と、第一係合溝２１に対向し、管状部材４を保持したときの管状部材４の長手方向、すなわち図３における左右方向における長さが第一係合溝２１よりも短く、管状部材４を支持する第一支持部２２を有している。第一係合溝２１は、管状部材４を下から支える部材であり、図４に示すように、下方の基部１側に向かって窪んだ曲面状である。また、第一支持部２２は、管状部材４を上から支える部材であり、下方の基部１とは反対側に向かって窪んだ湾曲した形状を有している。第一係合溝２１と第一支持部２２により、図６に示すように、管状部材４を支持して、使用者が把持する箇所を力点、第一係合溝２１と当接する箇所を支点、第一支持部２２と当接する箇所を作用点として、てこの原理により管状部材４を所望の角度に曲げることができる。本実施形態において、第一係合溝２１は、直径が１９ｍｍの金属管と適合するように湾曲しているが、他の実施形態において、第二係合溝２３と湾曲率が異なる限りにおいて他の金属管と適合するように湾曲させることができる。 The bent portion 2 has a first engaging groove 21 that can come into contact with a tubular member 4 such as a metal tube to be bent, and a tubular member 4 that faces the first engaging groove 21 and holds the tubular member 4. The length in the longitudinal direction of the above, that is, in the left-right direction in FIG. 3, is shorter than that of the first engaging groove 21, and has a first support portion 22 that supports the tubular member 4. The first engaging groove 21 is a member that supports the tubular member 4 from below, and has a curved surface shape that is recessed toward the lower base portion 1 side as shown in FIG. Further, the first support portion 22 is a member that supports the tubular member 4 from above, and has a curved shape that is recessed toward the side opposite to the lower base portion 1. As shown in FIG. 6, the first engaging groove 21 and the first supporting portion 22 support the tubular member 4, the point where the user grips is the point of effort, and the point where the tubular member 4 is in contact with the first engaging groove 21 is the fulcrum. The tubular member 4 can be bent at a desired angle by the principle of leverage, with the point of contact with the first support portion 22 as the point of action. In the present embodiment, the first engaging groove 21 is curved so as to be compatible with a metal tube having a diameter of 19 mm, but in other embodiments, the first engaging groove 21 is different from the second engaging groove 23 as long as the curvature is different. Can be curved to fit the metal tube of.

そして、折曲げ部２は、管状部材４と当接しうる第二係合溝２３と、第二係合溝２３に対向し、管状部材４を保持したときの管状部材４の長手方向、すなわち図３における左右方向における長さが第二係合溝２３よりも短く、管状部材４を支持する第二支持部２４を有している。第二係合溝２３は、管状部材４を下から支える部材であり、図４に示すように、下方の基部１側に向かって窪んだ曲面状である。また、第二支持部２４は、管状部材４を上から支える部材であり、下方の基部１とは反対側に向かって窪んだ湾曲した形状を有している。第二係合溝２３と第二支持部２４により、図６と同様に、管状部材４を支持して、使用者が把持する箇所を力点、第二係合溝２３と当接する箇所を支点、第二支持部２４と当接する箇所を作用点として、てこの原理により管状部材４を所望の角度に曲げることができる。本実施形態において、第二係合溝２３は、直径が２５ｍｍの金属管と適合するように湾曲しているが、他の実施形態において、第一係合溝２１と湾曲率が異なる限りにおいて他の金属管と適合するように湾曲させることができる。 Then, the bent portion 2 faces the second engaging groove 23 that can come into contact with the tubular member 4 and the second engaging groove 23, and is in the longitudinal direction of the tubular member 4 when the tubular member 4 is held, that is, the figure. The length in the left-right direction of No. 3 is shorter than that of the second engaging groove 23, and has a second support portion 24 that supports the tubular member 4. The second engaging groove 23 is a member that supports the tubular member 4 from below, and has a curved surface shape that is recessed toward the lower base portion 1 side as shown in FIG. Further, the second support portion 24 is a member that supports the tubular member 4 from above, and has a curved shape that is recessed toward the side opposite to the lower base portion 1. Similar to FIG. 6, the second engaging groove 23 and the second supporting portion 24 support the tubular member 4, and the point where the user grips is the point of effort, and the point where the tubular member 4 is in contact with the second engaging groove 23 is the fulcrum. The tubular member 4 can be bent at a desired angle by the principle of leverage, with the point of contact with the second support portion 24 as the point of action. In the present embodiment, the second engaging groove 23 is curved to fit a metal tube having a diameter of 25 mm, but in other embodiments, the second engaging groove 23 is different from the first engaging groove 21 as long as the curvature is different. Can be curved to fit the metal tube of.

そして、第一係合溝２１及び第二係合溝２３が、基部１側に向かって窪んでおり、それぞれ曲率半径の異なる曲面状である。図４に示すように、相対的に第一係合溝２１の曲率半径が小さく、第二係合溝２３の曲率半径が大きくなっている。このように構成することにより、例えば、直径が１９ｍｍ、２５ｍｍなどの２種類の異なる管状部材４に対しても、ひとつの折曲げ作業用工具で加工でき、管状部材４の直径によっていちいち折曲げ作業用工具を取り換える必要がないため作業効率を向上させることができる。また、図５に示すように、第一係合溝２１及び第二係合溝２３は略平行に並設されている。 The first engaging groove 21 and the second engaging groove 23 are recessed toward the base 1 side, and each has a curved surface shape having a different radius of curvature. As shown in FIG. 4, the radius of curvature of the first engaging groove 21 is relatively small, and the radius of curvature of the second engaging groove 23 is relatively large. With this configuration, for example, two different types of tubular members 4 having diameters of 19 mm and 25 mm can be processed with one bending work tool, and bending work can be performed one by one according to the diameter of the tubular member 4. Work efficiency can be improved because there is no need to replace the tools. Further, as shown in FIG. 5, the first engaging groove 21 and the second engaging groove 23 are arranged side by side in substantially parallel manner.

また、第一係合溝２１及び第二係合溝２３は、外側面側から、すなわち図３における紙面手前から奥側又は紙面奥側から手前側の方向から見ると、基部１側から突出するように、一定の曲率半径を有し、管状部材４を保持したときの管状部材４の長手方向、すなわち図３における左右方向に基部１の上端側を覆って湾曲状に形成されており、その長さは第一係合溝２１よりも第二係合溝２３の方が長くなっている。 Further, the first engaging groove 21 and the second engaging groove 23 project from the base 1 side when viewed from the outer surface side, that is, from the front side to the back side of the paper surface or from the back side of the paper surface to the front side in FIG. As described above, the tubular member 4 has a constant radius of curvature and is formed in a curved shape so as to cover the upper end side of the base 1 in the longitudinal direction of the tubular member 4 when the tubular member 4 is held, that is, in the left-right direction in FIG. The length of the second engaging groove 23 is longer than that of the first engaging groove 21.

そして、第一支持部２２と第二支持部２４が、管状部材４を保持したときの管状部材４の長手方向、すなわち図３における左右方向において所定の間隔をあけて設けられている。第一支持部２２と第二支持部２４の基端は、第一係合溝２１及び第二係合溝２３の間である中央側の端部の境界からそれぞれ立設して、それぞれ第一係合溝２１及び第二係合溝２３を覆うように湾曲している。第一支持部２２と第二支持部２４が、隣り合わせではなく、図３における左右方向において所定の間隔をあけて設けられていることにより、図６に示すように、１９ｍｍの金属管である管状部材４を外側から後述する開口部３を介して第一係合溝２１と第一支持部２２との間に挿入して折り曲げることができ、そして、前後方向に１８０°反転させることにより、２５ｍｍの金属管も同様に外側から後述する開口部３を介して第二係合溝２３と第二支持部２４との間に挿入して折り曲げることができるというように、使用者が右利きであれば常に外側から金属管を挿入することができるので、作業性を向上することができる。なお、使用者が左利きであれば、第一支持部２２と第二支持部２４の配置を前後逆にするなどの変更によって、同様に、常に外側から金属管を挿入することができるので、やはり作業性を向上することができる。 The first support portion 22 and the second support portion 24 are provided at predetermined intervals in the longitudinal direction of the tubular member 4 when the tubular member 4 is held, that is, in the left-right direction in FIG. The base ends of the first support portion 22 and the second support portion 24 are erected from the boundary of the central end portion between the first engagement groove 21 and the second engagement groove 23, respectively, and are first. It is curved so as to cover the engaging groove 21 and the second engaging groove 23. As shown in FIG. 6, the first support portion 22 and the second support portion 24 are provided not adjacent to each other but at predetermined intervals in the left-right direction in FIG. 3, so that the tubular body is a 19 mm metal tube. The member 4 can be inserted and bent from the outside between the first engaging groove 21 and the first support portion 22 via the opening 3 described later, and is inverted by 180 ° in the front-rear direction to 25 mm. The metal tube of the above can also be inserted between the second engaging groove 23 and the second support portion 24 from the outside through the opening 3 described later and bent, so that the user is right-handed. For example, since the metal tube can always be inserted from the outside, workability can be improved. If the user is left-handed, the metal tube can always be inserted from the outside by changing the arrangement of the first support portion 22 and the second support portion 24 by reversing the arrangement of the first support portion 22 and the second support portion 24. Workability can be improved.

そして、第一支持部２２及び第二支持部２４が、それぞれ第一係合溝２１及び第二係合溝２３に対して膨んで、そしてそれぞれの曲率半径が異なる湾曲した形状である。第一支持部２２は、第一係合溝２１と対向する部分において第一係合溝２１の曲率半径と略同等の曲率半径を有する板状部材であり、第二支持部２４は、第二係合溝２３と対向する部分において第二係合溝２３の曲率半径と略同等の曲率半径を有する板状部材であることから、それぞれに対応する直径を有する管状部材４を安定して支持することができる。 The first support portion 22 and the second support portion 24 are curved with respect to the first engagement groove 21 and the second engagement groove 23, respectively, and their respective radii of curvature are different. The first support portion 22 is a plate-shaped member having a radius of curvature substantially equal to the radius of curvature of the first engagement groove 21 at a portion facing the first engagement groove 21, and the second support portion 24 is a second support portion 24. Since the plate-shaped member has a radius of curvature substantially equal to the radius of curvature of the second engaging groove 23 at the portion facing the engaging groove 23, the tubular member 4 having a corresponding diameter is stably supported. be able to.

そして、第一係合溝２１及び第一支持部２２の間であって外側面側において、第一開口部３１を有しており、より具体的には第一係合溝２１の外側面側と第一支持部２２の外側面側において、所定の管状部材４を挿入することが間隔を有する第一開口部３１を有している。そして、第二係合溝２３及び第二支持部２４の間であって外側面側において、第二開口部３２を有しており、より具体的には第二係合溝２３の外側面側と第二支持部２４の外側面側において、所定の管状部材４を挿入することが間隔を有する第二開口部３２を有している。第一開口部３１及び第二開口部３２などの開口部３を備えることにより、管状部材４を折曲げ作業用工具の外側面側から挿入することができるので、数ｍなど長さの長い金属管の中間位置などの途中部分を折り曲げようとするときに折曲げ作業用工具に設置させやすくなる。 The first opening 31 is provided between the first engaging groove 21 and the first support portion 22 on the outer surface side, and more specifically, the outer surface side of the first engaging groove 21. And on the outer surface side of the first support portion 22, there is a first opening portion 31 at which a predetermined tubular member 4 is inserted. A second opening 32 is provided between the second engaging groove 23 and the second support portion 24 on the outer surface side, and more specifically, the outer surface side of the second engaging groove 23. And on the outer surface side of the second support portion 24, there is a second opening 32 at which a predetermined tubular member 4 is inserted. By providing the opening 3 such as the first opening 31 and the second opening 32, the tubular member 4 can be inserted from the outer surface side of the bending work tool, so that a metal having a long length such as several meters can be inserted. When trying to bend an intermediate part such as an intermediate position of a pipe, it becomes easy to install it on a bending work tool.

連結部５は、基部１と折曲げ部２を連結する部材であり、基部１側面から板状の部材として立設され折曲げ部２の下面と固設されることにより、基部１と折曲げ部２を連結している。本実施形態において、基部１、折曲げ部２及び連結部５は一体的に成形されている。また、本実施形態において、基部１、折曲げ部２と接続する部材として連結部５が設けられているが、他の実施形態において、連結部５が設けずに、基部１と折曲げ部２を直接的に結び付けて一体的に形成することもできる。 The connecting portion 5 is a member that connects the base portion 1 and the bent portion 2, and is erected as a plate-shaped member from the side surface of the base portion 1 and fixed to the lower surface of the bent portion 2 to bend the base portion 1. Part 2 is connected. In the present embodiment, the base portion 1, the bent portion 2, and the connecting portion 5 are integrally molded. Further, in the present embodiment, the connecting portion 5 is provided as a member for connecting to the base portion 1 and the bending portion 2, but in other embodiments, the connecting portion 5 is not provided and the base portion 1 and the bending portion 2 are provided. Can also be formed integrally by directly connecting them.

基部１、折曲げ部２及び連結部５の材質は、金属管などの管状部材４を折り曲げるときに管状部材４との当接箇所に生じる力に耐え得るために金属などの材質であることが好ましく、鉄、鋼、鋳鉄、硬質アルミ、ステンレスなどであることが好ましい。 The material of the base portion 1, the bent portion 2 and the connecting portion 5 may be a material such as metal in order to withstand the force generated at the contact portion with the tubular member 4 when the tubular member 4 such as a metal tube is bent. It is preferably iron, steel, cast iron, hard aluminum, stainless steel or the like.

１・・・基部
１２・・・挿通孔
１３・・・雌螺子
２・・・折曲げ部
２１・・・第一係合溝
２２・・・第一支持部
２３・・・第二係合溝
２４・・・第二支持部
３・・・開口部
３１・・・第一開口部
３２・・・第二開口部
４・・・管状部材
５・・・連結部
Ｂ・・・把持部材 1 ... Base 12 ... Insertion hole 13 ... Female screw 2 ... Bending part 21 ... First engaging groove 22 ... First support part 23 ... Second engaging groove 24 ... Second support 3 ... Opening 31 ... First opening 32 ... Second opening 4 ... Tubular member 5 ... Connecting part B ... Gripping member

Claims (5)

使用者が把持する把持部材を取り付ける挿通孔を有する基部と、
前記基部の一端側に前記基部に対して突出した湾曲状であり、管状部材を保持する折曲 げ部を備え、
前記折曲げ部が、
前記管状部材と当接しうる第一係合溝と、
前記第一係合溝に対向し、前記管状部材を保持したときの前記管状部材の長手方向にお ける長さが前記第一係合溝よりも短く、前記管状部材を支持する第一支持部と、
前記管状部材と当接しうる第二係合溝と、
前記第二係合溝に対向し、前記管状部材を保持したときの前記管状部材の長手方向にお ける長さが前記第二係合溝よりも短く、前記管状部材を支持する第二支持部を有し、
前記第一係合溝及び前記第二係合溝が、前記基部側に向かって窪み曲率半径の異なる曲 面状であり、
前記第一支持部と前記第二支持部が、前記管状部材を保持したときの前記管状部材の長 手方向において所定の間隔をあけて設けられている
ことを特徴とする折曲げ作業用工具。 A base having an insertion hole for attaching a gripping member to be gripped by the user,
One end side of the base portion is provided with a bent portion that is curved with respect to the base portion and holds a tubular member.
The bent part
The first engaging groove that can come into contact with the tubular member,
A first support portion that faces the first engaging groove and has a length in the longitudinal direction of the tubular member when the tubular member is held, which is shorter than the first engaging groove and supports the tubular member. When,
A second engaging groove that can come into contact with the tubular member,
A second support portion that faces the second engaging groove and has a length in the longitudinal direction of the tubular member when the tubular member is held, which is shorter than the second engaging groove and supports the tubular member. Have,
The first engaging groove and the second engaging groove are curved toward the base side and have different radii of curvature.
A bending work tool, wherein the first support portion and the second support portion are provided at a predetermined distance in the lateral direction of the tubular member when the tubular member is held. 前記第一支持部及び前記第二支持部が、それぞれ前記第一係合溝及び前記第二係合溝に 対して膨み、前記第一支持部における前記第一係合溝と対向する部分において前記第一 係合溝の曲率半径と略同等の曲率半径を有し、前記第二支持部における前記第二係合溝 と対向する部分において前記第二係合溝の曲率半径と略同等の曲率半径を有しており、 湾曲状であることを特徴とする請求項１に記載の折曲げ作業用工具。 In a portion where the first support portion and the second support portion bulge with respect to the first engagement groove and the second engagement groove, respectively, and face the first engagement groove in the first support portion. It has a radius of curvature substantially equal to the radius of curvature of the first engaging groove, and has a curvature substantially equivalent to the radius of curvature of the second engaging groove at a portion of the second support portion facing the second engaging groove. The bending work tool according to claim 1, wherein the tool has a radius and is curved. 前記基部の一端側の内側面に雌螺子を有することを特徴とする請求項１又は請求項２に 記載の折曲げ作業用工具。 The bending work tool according to claim 1 or 2, wherein the female screw is provided on the inner surface of one end side of the base portion. 前記第一係合溝及び前記第一支持部の間並びに前記第二係合溝及び前記第二支持部の間 であって外側面側において、それぞれ開口部を有することを特徴とする請求項１から請 求項３のいずれかに記載の折曲げ作業用工具。 Claim 1 is characterized in that an opening is provided between the first engaging groove and the first supporting portion and between the second engaging groove and the second supporting portion on the outer surface side, respectively. The bending work tool according to any one of claims 3. 前記基部に前記把持部材が取り付けられていることを特徴とする請求項１から請求項４ のいずれかに記載の折曲げ作業用工具。 The bending work tool according to any one of claims 1 to 4, wherein the gripping member is attached to the base.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2232819A (en) * 1937-07-22 1941-02-25 Greenlee Bros & Co Tube bender
US2233292A (en) * 1938-09-10 1941-02-25 Jacob W Lewin Pipe bender
US2695538A (en) * 1951-03-19 1954-11-30 Tal Bender Inc Ratchet and pawl actuated lightweight tube benders
JPS557296Y2 (en) * 1977-08-20 1980-02-19
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