JP2024066693A

JP2024066693A - Pipe mounting structure using pipe clamps

Info

Publication number: JP2024066693A
Application number: JP2022176276A
Authority: JP
Inventors: 典幸瀬田; 生希佐藤
Original assignee: Yokohama Rubber Co Ltd
Current assignee: Yokohama Rubber Co Ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2024-05-16

Abstract

【課題】作業効率を改善しつつコストを削減するとともに、パイプの保持力を向上させる。【解決手段】金属製のパイプクランプ１０Ａは、パイプ１２の外周面１２０２を保持する円弧状板部１４と、円弧状板部１４の周方向の両端から延在しそれらの内面が重ね合わされる一対の取り付け板部１６とを備え、一方の取り付け板部１８の内面１８０２と、この一方の取り付け板部１８が接続する円弧状板部１４の一端で円弧状板部１４の内周面１４０２が接触するパイプ１２の外周面１２０２の箇所における接線１２Ａとがなす角度θ１は９０度以下であり、他方の取り付け板部２０の内面２００２と、この他方の取り付け板部２０が接続する円弧状板部１４の他端で円弧状板部１４の内周面１４０２が接触するパイプ１２の外周面１２０２の箇所における接線１２Ｂとがなす角度θ２は鈍角である。【選択図】図６The present invention aims to improve work efficiency, reduce costs, and improve pipe holding force. [Solution] A metal pipe clamp 10A includes an arc-shaped plate portion 14 that holds an outer peripheral surface 1202 of a pipe 12, and a pair of mounting plates 16 that extend from both circumferential ends of the arc-shaped plate portion 14 and have their inner surfaces overlapped, the angle θ1 between the inner surface 1802 of one mounting plate portion 18 and a tangent 12A at a location on the outer peripheral surface 1202 of the pipe 12 where the inner peripheral surface 1402 of the arc-shaped plate portion 14 contacts at one end of the arc-shaped plate portion 14 to which the one mounting plate portion 18 is connected is 90 degrees or less, and the angle θ2 between the inner surface 2002 of the other mounting plate portion 20 and a tangent 12B at a location on the outer peripheral surface 1202 of the pipe 12 where the inner peripheral surface 1402 of the arc-shaped plate portion 14 contacts at the other end of the arc-shaped plate portion 14 to which the other mounting plate portion 20 is connected is an obtuse angle. [Selected Figure] Figure 6

Description

本発明は、パイプを保持するパイプクランプを用いたパイプの取り付け構造に関する。 The present invention relates to a pipe mounting structure using a pipe clamp to hold the pipe.

車両には様々な流体を流通させるためのパイプ（流体配管）が設けられている。
例えば、車室内空調用のエアコンに設けられたパイプには熱交換用の流体である熱媒体が流通している。
あるいは、エンジンに設けられたパイプにはオイルや冷却水、ＥＧＲガスなどの液体や気体が流通している。
このようなパイプをエンジンルームに配置する場合、パイプの中間部を、パイプクランプを介して車体に保持することになる。
例えば、パイプクランプの円弧状板部をパイプに巻き付けた後に、円弧状板部の両端から延在する一対の取り付け板部を重ね合わせ、エンジンルーム内に設けられた基台に締結具を用いて締め付けて固定する技術が開示されている（特許文献１参照）。 2. Description of the Related Art A vehicle is provided with pipes (fluid piping) for the flow of various fluids.
For example, a heat medium, which is a fluid for heat exchange, flows through pipes provided in an air conditioner for conditioning the interior of a vehicle.
Alternatively, liquids and gases such as oil, cooling water, and EGR gas flow through pipes provided in the engine.
When such a pipe is arranged in an engine compartment, the middle portion of the pipe is held to the vehicle body via a pipe clamp.
For example, a technology has been disclosed in which the arc-shaped plate portion of a pipe clamp is wrapped around a pipe, and then a pair of mounting plate portions extending from both ends of the arc-shaped plate portion are overlapped and fastened to a base provided in the engine compartment using fasteners (see Patent Document 1).

特開平１１－２１０９３５号公報Japanese Patent Application Laid-Open No. 11-210935

しかしながら、特許文献１では、パイプクランプをパイプに巻き付けた際に、パイプの外周面とパイプクランプの内面との間に大きな隙間が形成されてしまい、クランプによるパイプの保持力が低下してしまう。そうすると、走行時に車両が振動したり内燃機関が振動すると、パイプがガタついてしまうことがある。
このため、パイプの取り付けの際に溶接やろう付けを行ったり、パイプとクランプの間にゴムパッキンやゴムブッシュを充填していたが、溶接やろう付けを用いた取り付けは、技術力を有する作業であるため容易に行えず、また、ゴムパッキンやゴムブッシュを用いた取り付けは、部品数が増加してコストが上昇してしまう。
本発明は、上記事情に鑑みてなされたものであり、パイプの保持力を向上させるとともに、容易な取り付け作業により作業効率を改善しつつコストを削減するパイプクランプを用いたパイプの取り付け構造を提供することを目的とする。 However, in the case of Patent Document 1, when the pipe clamp is wrapped around the pipe, a large gap is formed between the outer surface of the pipe and the inner surface of the pipe clamp, which reduces the clamp's ability to hold the pipe in place, and this can cause the pipe to rattle when the vehicle or internal combustion engine vibrates while driving.
For this reason, pipes have traditionally been attached by welding or brazing, or by filling the gap between the pipe and the clamp with rubber gaskets or rubber bushings. However, attachment using welding or brazing requires skilled work and is not easy to perform, and attachment using rubber gaskets or rubber bushings increases the number of parts, raising costs.
The present invention has been made in consideration of the above circumstances, and aims to provide a pipe mounting structure using a pipe clamp that improves the pipe holding force and reduces costs while improving work efficiency through easy installation work.

上述した目的を達成するため本発明の一実施の形態は、金属製のパイプクランプを用いたパイプの取り付け構造であって、前記パイプクランプは、パイプの外周面を保持する円弧状板部と、前記円弧状板部の周方向の両端から延在しそれらの内面が重ね合わされる一対の取り付け板部と備え、前記一対の取り付け板部のうちの一方の取り付け板部の内面と、この一方の取り付け板部が接続する前記円弧状板部の両端のうちの一端で前記円弧状板部の内周面が接触する前記パイプの外周面の箇所における接線とがなす角度は９０度以下であり、前記一対の取り付け板部のうちの他方の取り付け板部の内面と、この他方の取り付け板部が接続する前記円弧状板部の両端のうちの他端で前記円弧状板部の内周面が接触する前記パイプの外周面の箇所における接線とがなす角度は鈍角であることを特徴とする。
また、本発明の一実施の形態は、前記一方の取り付け板部と、前記円弧状板部の両端のうちの一端とは第１湾曲部を介して接続され、前記他方の取り付け板部と、前記円弧状板部の両端のうちの他端とは第２湾曲部を介して接続され、前記第１取り付け板部と前記第２取り付け板部の厚さを共にＴ１とすると、前記第１湾曲部の頂部と前記第２湾曲部の頂部との間の距離は前記Ｔ１よりも小さい値で形成されていることを特徴とする。
また、本発明の一実施の形態は、前記一対の取り付け板部の内面が重ね合わされた箇所のうち前記パイプの外周面に最も近い箇所と前記パイプの外周面との距離は、前記Ｔ１よりも小さい値で形成されていることを特徴とする。
また、本発明の一実施の形態は、前記一対の取り付け板部の前記円弧状板部から離れた端部にボルト挿通孔が形成され、前記一対の取り付け板部の前記ボルト挿通孔に挿通されたボルトが被取り付け面に締結されることで前記パイプクランプを前記被取り付け面に取り付けることを特徴とする。 In order to achieve the above-mentioned object, one embodiment of the present invention is a pipe mounting structure using a metal pipe clamp, the pipe clamp comprising an arc-shaped plate portion for holding an outer peripheral surface of a pipe, and a pair of mounting plates extending from both circumferential ends of the arc-shaped plate portion and having their inner surfaces overlapping, wherein an angle formed by an inner surface of one of the pair of mounting plates and a tangent to a location on the outer peripheral surface of the pipe where the inner peripheral surface of the arc-shaped plate portion contacts at one of both ends of the arc-shaped plate portion to which the one mounting plate portion is connected is 90 degrees or less, and an angle formed by an inner surface of the other of the pair of mounting plates and a tangent to a location on the outer peripheral surface of the pipe where the inner peripheral surface of the arc-shaped plate portion contacts at the other of both ends of the arc-shaped plate portion to which the other mounting plate portion is connected is an obtuse angle.
In addition, one embodiment of the present invention is characterized in that the one mounting plate portion and one of the two ends of the arc-shaped plate portion are connected via a first curved portion, and the other mounting plate portion and the other of the two ends of the arc-shaped plate portion are connected via a second curved portion, and when the thicknesses of the first mounting plate portion and the second mounting plate portion are both T1, the distance between the apex of the first curved portion and the apex of the second curved portion is formed at a value smaller than T1.
In addition, one embodiment of the present invention is characterized in that the distance between the outer peripheral surface of the pipe and the point where the inner surfaces of the pair of mounting plate portions are overlapped and that point is closest to the outer peripheral surface of the pipe is formed to a value smaller than T1.
In addition, one embodiment of the present invention is characterized in that a bolt insertion hole is formed at the end portion of the pair of mounting plate portions away from the arc-shaped plate portion, and the pipe clamp is attached to the mounting surface by fastening a bolt inserted into the bolt insertion hole of the pair of mounting plate portions to the mounting surface.

本発明の一実施の形態によれば、金属製のパイプクランプが、パイプの外周面を保持する円弧状板部と、円弧状板部の周方向の両端から延在しそれらの内面が重ね合わされる一対の取り付け板部とを備え、一方の取り付け板部の内面と、この一方の取り付け板部が接続する円弧状板部の一端で円弧状板部の内周面が接触するパイプの外周面の箇所における接線とがなす角度は９０度以下であり、他方の取り付け板部の内面と、この他方の取り付け板部が接続する円弧状板部の他端で円弧状板部の内周面が接触するパイプの外周面の箇所における接線とがなす角度は鈍角であるため、パイプの外周面とパイプクランプの内面との間の隙間を減少させてパイプを取り付けることができる。したがって、円弧状板部の内周面とパイプの外周面との接触面積を大きく確保し、パイプの保持力を向上させるとともに、容易な取り付け作業により作業効率を改善しつつコストを削減する上で有利となる。
また、第１湾曲部の頂部と第２湾曲部の頂部との間の距離を、一方の取り付け板部と他方の取り付け板部の厚さＴ１よりも小さい値で形成すれば、パイプの外周面とパイプクランプの内面との間の隙間を確実に減少させるため、円弧状板部の内周面とパイプの外周面との接触面積を大きく確保し、パイプの保持力を向上させる上で有利となる。
また、一対の取り付け板部の内面が重ね合わされた箇所のうちパイプの外周面に最も近い箇所と、パイプの外周面との距離を、一方の取り付け板部と他方の取り付け板部の厚さＴ１よりも小さい値で形成すれば、パイプの外周面とパイプクランプの内面との間の隙間を確実に減少させるため、円弧状板部の内周面とパイプの外周面との接触面積を大きく確保し、パイプの保持力を向上させる上で有利となる。
また、一対の取り付け板部の円弧状板部から離れた端部にボルト挿通孔が形成され、一対の取り付け板部のボルト挿通孔に挿通されたボルトが被取り付け面に締結されることでパイプクランプを被取り付け面に取り付ける構成とすれば、円弧状板部とボルトとの間で所定の距離を確保できるため、近傍に配置された他のパイプとの接触を回避する上で有利となる。 According to one embodiment of the present invention, a metal pipe clamp includes an arc-shaped plate portion for holding an outer peripheral surface of a pipe, and a pair of mounting plates extending from both circumferential ends of the arc-shaped plate portion and overlapping their inner surfaces, the angle between the inner surface of one mounting plate portion and a tangent line at a portion of the outer peripheral surface of the pipe where the inner peripheral surface of the arc-shaped plate portion contacts the inner peripheral surface of the arc-shaped plate portion at one end of the arc-shaped plate portion connected to the one mounting plate portion is 90 degrees or less, and the angle between the inner surface of the other mounting plate portion and a tangent line at a portion of the outer peripheral surface of the pipe where the inner peripheral surface of the arc-shaped plate portion contacts the inner peripheral surface of the arc-shaped plate portion at the other end of the arc-shaped plate portion connected to the other mounting plate portion is an obtuse angle, so that the pipe can be mounted with a reduced gap between the outer peripheral surface of the pipe and the inner surface of the pipe clamp. This ensures a large contact area between the inner peripheral surface of the arc-shaped plate portion and the outer peripheral surface of the pipe, improves the holding force of the pipe, and is advantageous in improving work efficiency and reducing costs by making the installation work easier.
Furthermore, if the distance between the top of the first curved portion and the top of the second curved portion is formed to be smaller than the thickness T1 between one mounting plate portion and the other mounting plate portion, the gap between the outer surface of the pipe and the inner surface of the pipe clamp is reliably reduced, thereby ensuring a large contact area between the inner surface of the arc-shaped plate portion and the outer surface of the pipe, which is advantageous in improving the holding force of the pipe.
Furthermore, if the distance between the outer peripheral surface of the pipe and the point where the inner surfaces of the pair of mounting plates are overlapped and that point is closest to the outer peripheral surface of the pipe is made smaller than the thickness T1 of one mounting plate and the other mounting plate, the gap between the outer peripheral surface of the pipe and the inner surface of the pipe clamp can be reliably reduced, thereby ensuring a large contact area between the inner surface of the arc-shaped plate and the outer peripheral surface of the pipe, which is advantageous in improving the holding force of the pipe.
In addition, if a bolt insertion hole is formed at the end of the pair of mounting plate portions away from the arc-shaped plate portions, and the bolt inserted into the bolt insertion hole of the pair of mounting plate portions is fastened to the mounting surface to attach the pipe clamp to the mounting surface, a predetermined distance can be secured between the arc-shaped plate portions and the bolt, which is advantageous in avoiding contact with other pipes placed nearby.

（Ａ）は第１の実施の形態のパイプクランプを用いたパイプの取り付け構造の平面図であり、（Ｂ）は第１の実施の形態のパイプクランプを用いたパイプの取り付け構造の正面図である。1A is a plan view of a pipe mounting structure using a pipe clamp of a first embodiment, and FIG. 1B is a front view of the pipe mounting structure using a pipe clamp of the first embodiment. FIG. 金型による成型前のパイプクランプを示す説明図である。FIG. 2 is an explanatory diagram showing the pipe clamp before molding with a die. 金型がパイプクランプに接した状態を示す説明図である。FIG. 13 is an explanatory diagram showing a state in which the mold is in contact with a pipe clamp. 金型がパイプクランプを押圧している状態を示す図である。FIG. 13 is a diagram showing a state in which the die presses the pipe clamp. 金型により成型されたパイプクランプを示す説明図である。FIG. 1 is an explanatory diagram showing a pipe clamp molded by a die. 一対の取り付け板部が重ね合わされた箇所の拡大図である。13 is an enlarged view of a portion where a pair of mounting plate portions are overlapped. FIG. 第２の実施の形態のパイプクランプを用いたパイプの取り付け構造の正面図である。FIG. 13 is a front view of a pipe mounting structure using a pipe clamp according to a second embodiment.

（第１の実施の形態）
以下、本発明の実施の形態について図面を参照して説明する。
本実施の形態のパイプクランプ１０Ａにより保持されて取り付けられるパイプ１２は、例えば、車室内空調用のエアコンに用いられる熱交換用の流体が流通するパイプであり、エンジンルーム内に配置されている。
本実施の形態のパイプ１２は金属製であるが、合成樹脂製やゴム製（ゴムホース）であっても取り付け可能となっている。
また、パイプクランプ１０Ａは金属製であって、例えば炭素鋼ＳＴＫＭなど従来公知の様々な材料が適用可能となっている。 (First embodiment)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The pipe 12 held and attached by the pipe clamp 10A of this embodiment is, for example, a pipe through which a heat exchange fluid flows for use in an air conditioner for conditioning the interior of a vehicle, and is arranged in an engine compartment.
In this embodiment, the pipe 12 is made of metal, but it is also possible to attach a pipe made of synthetic resin or rubber (rubber hose).
The pipe clamp 10A is made of metal, and various conventionally known materials such as carbon steel STKM can be used.

パイプクランプ１０Ａは、図１に示すように、パイプ１２の外周面１２０２を保持する円弧状板部１４と、円弧状板部１４の周方向の両端から延在しそれらの内面が重ね合わされる一対の取り付け板部１６とを備えている。
一対の取り付け板部１６のうちの一方の取り付け板部１８と、一方の取り付け板部１８が接続する円弧状板部１４の両端のうちの一端とは、第１湾曲部１００２を介して接続されている。
また、一対の取り付け板部１６のうちの他方の取り付け板部２０と、他方の取り付け板部２０が接続する円弧状板部１４の両端のうちの他端とは第２湾曲部１００４を介して接続されている。 As shown in FIG. 1, the pipe clamp 10A comprises an arc-shaped plate portion 14 that holds the outer peripheral surface 1202 of the pipe 12, and a pair of mounting plate portions 16 extending from both circumferential ends of the arc-shaped plate portion 14 and having their inner surfaces overlapped.
One mounting plate portion 18 of the pair of mounting plate portions 16 and one of the two ends of the arc-shaped plate portion 14 to which the one mounting plate portion 18 is connected are connected via a first curved portion 1002 .
In addition, the other mounting plate portion 20 of the pair of mounting plate portions 16 and the other end of the arc-shaped plate portion 14 to which the other mounting plate portion 20 is connected are connected via a second curved portion 1004.

図１、図６に示すように、円弧状板部１４の一端から他端に至るまでの内周面１４０２は、パイプ１２の外周面１２０２に圧接している。
そして、パイプクランプ１０Ａの内面（パイプクランプ１０Ａの第１湾曲部１００２の内面および第２湾曲部１００４の内面）と、パイプ１２の外周面１２０２とにより囲まれた箇所には、隙間Ｓが形成されている。
図１（Ｂ）に示すように、一対の取り付け板部１６は、パイプ１２側の端部から、後述するボルトＢ側の端部までの内面が重ね合わされており、それらの長手方向の中間部には第１屈曲部１６０２および第２屈曲部１６０４が形成されている。
したがって、図１（Ｂ）に示すように、一方の取り付け板部１８は、パイプ１２側の端部から順に、第１上平坦部１８０４、第１屈曲部１６０２、上傾斜部１８０６、第２屈曲部１６０４、および第２上平坦部１８０８が形成されている。
また、他方の取り付け板部２０は、パイプ１２側の端部から順に、第１下平坦部２００４、第１屈曲部１６０２、下傾斜部２００６、第２屈曲部１６０４、第２下平坦部２００８が形成されている。
一対の取り付け板部１６の円弧状板部１４から離れた端部には、ボルトＢを挿通するボルト挿通孔２２が形成されている。 As shown in FIGS. 1 and 6 , an inner peripheral surface 1402 of the arcuate plate portion 14 from one end to the other end is in pressure contact with an outer peripheral surface 1202 of the pipe 12 .
A gap S is formed in the area surrounded by the inner surface of the pipe clamp 10A (the inner surface of the first curved portion 1002 and the inner surface of the second curved portion 1004 of the pipe clamp 10A) and the outer peripheral surface 1202 of the pipe 12.
As shown in FIG. 1B, the inner surfaces of a pair of mounting plate portions 16 are overlapped from the end on the pipe 12 side to the end on the bolt B side described later, and a first bent portion 1602 and a second bent portion 1604 are formed in the middle of their longitudinal lengths.
Therefore, as shown in FIG. 1B, one of the mounting plate portions 18 is formed, in order from the end on the pipe 12 side, with a first upper flat portion 1804, a first bent portion 1602, an upper inclined portion 1806, a second bent portion 1604, and a second upper flat portion 1808.
The other mounting plate portion 20 is formed with, in order from the end on the pipe 12 side, a first lower flat portion 2004, a first bent portion 1602, a lower inclined portion 2006, a second bent portion 1604, and a second lower flat portion 2008.
A bolt insertion hole 22 for inserting a bolt B is formed at the end of each of the pair of mounting plate portions 16 away from the arc-shaped plate portion 14 .

図６（Ｂ）に示すように、一方の取り付け板部１８の内面１８０２と、一方の取り付け板部１８が接続する円弧状板部１４の両端のうちの一端で円弧状板部１４の内周面１４０２が接触するパイプ１２の外周面１２０２の箇所における接線１２Ａとがなす角度θ１は、隙間Ｓを減少させ円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保するため９０度以下となっている。
本実施の形態の角度θ１はおおよそ８５度となっている。
角度θ１は、９０度以下であればよく、パイプ１２の外径やパイプクランプ１０Ａの厚さなどにより湾曲可能な角度が定められる。なお、角度θ１の下限値は、曲げ加工上の観点からして６０度前後となる。 As shown in Figure 6 (B), the angle θ1 between the inner surface 1802 of one mounting plate portion 18 and the tangent 12A at the point on the outer peripheral surface 1202 of the pipe 12 where the inner peripheral surface 1402 of the arc-shaped plate portion 14 contacts at one of the two ends of the arc-shaped plate portion 14 to which the one mounting plate portion 18 is connected is 90 degrees or less in order to reduce the gap S and ensure a large contact area between the inner peripheral surface 1402 of the arc-shaped plate portion 14 and the outer peripheral surface 1202 of the pipe 12.
In this embodiment, the angle θ1 is approximately 85 degrees.
The angle θ1 may be any angle equal to or less than 90 degrees, and the angle at which the pipe 12 can be bent is determined by the outer diameter of the pipe 12, the thickness of the pipe clamp 10A, etc. The lower limit of the angle θ1 is approximately 60 degrees from the viewpoint of bending processing.

また、図６（Ｂ）に示すように、他方の取り付け板部２０の内面２００２と、他方の取り付け板部２０が接続する円弧状板部１４の両端のうちの他端で円弧状板部１４の内周面１４０２が接触するパイプ１２の外周面１２０２の箇所における接線１２Ｂとがなす角度θ２は、隙間Ｓを減少させ円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保するため鈍角となっている。
本実施の形態の角度θ２はおおよそ１２０度となっている。
角度θ２は、鈍角であるため９０度＜θ２＜１８０度であればよく、角度θ１と同様にパイプ１２の外径やパイプクランプ１０Ａの厚さなどにより湾曲可能な角度が定められる。 Also, as shown in Figure 6 (B), the angle θ2 between the inner surface 2002 of the other mounting plate portion 20 and the tangent 12B at the point on the outer peripheral surface 1202 of the pipe 12 where the inner peripheral surface 1402 of the arc-shaped plate portion 14 contacts the other end of the arc-shaped plate portion 14 to which the other mounting plate portion 20 is connected is an obtuse angle in order to reduce the gap S and ensure a large contact area between the inner peripheral surface 1402 of the arc-shaped plate portion 14 and the outer peripheral surface 1202 of the pipe 12.
In this embodiment, the angle θ2 is approximately 120 degrees.
Since angle θ2 is an obtuse angle, it is sufficient that 90 degrees<θ2<180 degrees. As with angle θ1, the angle at which bending can be performed is determined by the outer diameter of pipe 12, the thickness of pipe clamp 10A, and the like.

また、一方の取り付け板部１８と他方の取り付け板部２０の厚さ（板部の厚さ）を共にＴ１とすると、第１湾曲部１００２の頂部１００２Ａと第２湾曲部１００４の頂部１００４Ａとの間の距離Ｄ１は、隙間Ｓを減少させ円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保するため板部の厚さＴ１よりも小さい値で形成されている。
なお、第１湾曲部１００２の頂部１００２Ａは、第１湾曲部１００２がパイプ１２の外周面１２０２に接した箇所と、第１湾曲部１００２が他方の取り付け板部２０に接した箇所との間の中央部をいう。また、第２湾曲部１００４の頂部１００４Ａは、第２湾曲部１００４がパイプ１２の外周面１２０２に接した箇所と、第２湾曲部１００４が一方の取り付け板部１８に接した箇所との間の中央部をいう。 Furthermore, if the thickness (thickness of the plate portions) of both the one mounting plate portion 18 and the other mounting plate portion 20 are T1, the distance D1 between the top 1002A of the first curved portion 1002 and the top 1004A of the second curved portion 1004 is formed at a value smaller than the thickness T1 of the plate portions in order to reduce the gap S and ensure a large contact area between the inner surface 1402 of the arc-shaped plate portion 14 and the outer surface 1202 of the pipe 12.
The apex 1002A of the first curved portion 1002 refers to the center between the point where the first curved portion 1002 contacts the outer circumferential surface 1202 of the pipe 12 and the point where the first curved portion 1002 contacts the other mounting plate portion 20. The apex 1004A of the second curved portion 1004 refers to the center between the point where the second curved portion 1004 contacts the outer circumferential surface 1202 of the pipe 12 and the point where the second curved portion 1004 contacts one mounting plate portion 18.

また、一対の取り付け板部１６の内面が重ね合わされた箇所、すなわち一方の取り付け板部１８の内面１８０２と他方の取り付け板部２０の内面２００２とが重ね合わされた箇所のうち、パイプ１２の外周面１２０２に最も近い箇所と、パイプ１２の外周面１２０２との距離Ｄ２は、板部の厚さＴ１よりも小さい値で形成されている。
このように、角度θ１、角度θ２、距離Ｄ１、および距離Ｄ２を所定範囲内に定めることで、パイプ１２の外周面１２０２とパイプクランプ１０Ａの内面との間の隙間Ｓの体積を減少させ、隙間Ｓを減少させ円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保でき、パイプ１２の保持力を向上させる上で有利となる。 In addition, among the points where the inner faces of a pair of mounting plate portions 16 are overlapped, i.e., the points where the inner face 1802 of one mounting plate portion 18 and the inner face 2002 of the other mounting plate portion 20 are overlapped, the distance D2 between the point closest to the outer peripheral surface 1202 of the pipe 12 and the outer peripheral surface 1202 of the pipe 12 is formed to a value smaller than the thickness T1 of the plate portions.
In this way, by setting the angle θ1, the angle θ2, the distance D1, and the distance D2 within specified ranges, the volume of the gap S between the outer surface 1202 of the pipe 12 and the inner surface of the pipe clamp 10A is reduced, and by reducing the gap S, a large contact area between the inner surface 1402 of the arc-shaped plate portion 14 and the outer surface 1202 of the pipe 12 can be ensured, which is advantageous in improving the holding force of the pipe 12.

次に、パイプクランプ１０Ａによるパイプ１２の取り付け方法について図２～図５を参照して説明する。
図２に示すように、厚さが均一な一枚の金属板からなるパイプクランプ１０Ａは、パイプ１２を保持する前ではパイプ１２が挿脱できるように円弧状板部１４が開き、一対の取り付け板部１６が離れた状態で直線状に延在している。
パイプ１２をエンジンルーム内に取り付けるには、開いた円弧状板部１４にパイプ１２を挿入し、上型３２および下型３４を有する金型３０により成型加工を行う。 Next, a method for attaching the pipe 12 using the pipe clamp 10A will be described with reference to FIGS.
As shown in FIG. 2, the pipe clamp 10A, which is made of a single metal plate of uniform thickness, has an arc-shaped plate portion 14 that opens before holding the pipe 12 so that the pipe 12 can be inserted and removed, and a pair of mounting plate portions 16 that extend linearly and are spaced apart.
To install the pipe 12 in the engine compartment, the pipe 12 is inserted into the open arc-shaped plate portion 14 and then molded using a mold 30 having an upper mold 32 and a lower mold 34 .

図２に示すように、上型３２は、支軸部３２０２を中心に揺動可能となっており、本実施の形態では、成型加工時に時計回りに揺動する。
上型３２の型面３２Ａには、パイプクランプ１０Ａの円弧状板部１４をパイプ１２に巻き付ける円弧状上型部３２０４、第１湾曲部１００２を形成する第１湾曲上型部３２０６、第１上平坦部１８０４を形成する第１上平坦型部３２１２、第１屈曲部１６０２を形成する第１屈曲上型部３２０８、上傾斜部１８０６を形成する上傾斜型部３２１４、第２屈曲部１６０４を形成する第２屈曲上型部３２１０、第２上平坦部１８０８を形成する第２上平坦型部３２１６が設けられている。 As shown in FIG. 2, the upper mold 32 is capable of swinging about a support shaft 3202, and in this embodiment, swings clockwise during molding.
The mold surface 32A of the upper mold 32 is provided with an arc-shaped upper mold portion 3204 for wrapping the arc-shaped plate portion 14 of the pipe clamp 10A around the pipe 12, a first curved upper mold portion 3206 for forming the first curved portion 1002, a first upper flat mold portion 3212 for forming the first upper flat portion 1804, a first bent upper mold portion 3208 for forming the first bent portion 1602, an upper inclined mold portion 3214 for forming the upper inclined portion 1806, a second bent upper mold portion 3210 for forming the second bent portion 1604, and a second upper flat mold portion 3216 for forming the second upper flat portion 1808.

また、下型３４は、上下に移動可能となっており、本実施の形態では、成型加工時に上昇する。
下型３４の型面３４Ａには、パイプクランプ１０Ａの円弧状板部１４をパイプ１２に巻き付ける円弧状下型部３４０２、第２湾曲部１００４を形成する第２湾曲下型部３４０４、第１下平坦部２００４を形成する第１下平坦型部３４１０、第１屈曲部１６０２を形成する第１屈曲下型部３４０６、下傾斜部２００６を形成する下傾斜型部３４１２、第２屈曲部１６０４を形成する第２屈曲下型部３４０８、第２下平坦部２００８を形成する第２下平坦型部３４１４が設けられている。 The lower die 34 is movable up and down, and in this embodiment, rises during molding.
The mold surface 34A of the lower mold 34 is provided with an arc-shaped lower mold portion 3402 for wrapping the arc-shaped plate portion 14 of the pipe clamp 10A around the pipe 12, a second curved lower mold portion 3404 for forming the second curved portion 1004, a first lower flat mold portion 3410 for forming the first lower flat portion 2004, a first bent lower mold portion 3406 for forming the first bent portion 1602, a lower inclined mold portion 3412 for forming the lower inclined portion 2006, a second bent lower mold portion 3408 for forming the second bent portion 1604, and a second lower flat mold portion 3414 for forming the second lower flat portion 2008.

図３に示すように、パイプクランプ１０Ａの成型加工が開始されると、上型３２は時計回りに揺動して型面３２Ａが一方の取り付け板部１８のパイプ１２と反対側の端部を時計回りに押圧し、他方の取り付け板部２０に向けて移動させる。
また、下型３４は上昇し、他方の取り付け板部２０のパイプ１２側の端部を上方に押圧する。
これにより、パイプクランプ１０Ａの円弧状板部１４がパイプ１２に巻き付いていく。
上型３２がさらに揺動し、下型３４がさらに上昇すると、図４に示すように、上型３２により一方の取り付け板部１８が上型３２の型面３２Ａに設けられた型部に沿って変形されていき、下型３４により他方の取り付け板部２０が下型３４の型面３４Ａに設けられた型部に沿って変形されていく。 As shown in Figure 3, when molding processing of the pipe clamp 10A begins, the upper mold 32 swings clockwise and the mold surface 32A presses the end of one mounting plate portion 18 opposite the pipe 12 clockwise, moving it toward the other mounting plate portion 20.
Furthermore, the lower die 34 rises and presses the end of the other mounting plate portion 20 on the pipe 12 side upward.
As a result, the arcuate plate portion 14 of the pipe clamp 10A wraps around the pipe 12.
As the upper mold 32 further oscillates and the lower mold 34 further rises, as shown in Figure 4, the upper mold 32 deforms one of the mounting plate portions 18 along the mold portion provided on the mold surface 32A of the upper mold 32, and the lower mold 34 deforms the other mounting plate portion 20 along the mold portion provided on the mold surface 34A of the lower mold 34.

そして、さらに上型３２が揺動するとともに下型３４が上昇すると、図５に示すように、一対の取り付け板部１６が重ね合わされていく。
このとき、図５、図１（Ｂ）に示すように、円弧状上型部３２０４および円弧状下型部３４０２により、円弧状板部１４がパイプ１２の外周面のほぼ全周に亘って巻き付けられ、第１湾曲上型部３２０６により第１湾曲部１００２が形成され、第２湾曲下型部３４０４により第２湾曲部１００４が形成される。
そして、一方の取り付け板部１８の内面１８０２と他方の取り付け板部２０の内面２００２とが重ね合わされながら、第１屈曲上型部３２０８および第１屈曲下型部３４０６により第１屈曲部１６０２が形成され、第２屈曲上型部３２１０および第２屈曲下型部３４０８により第２屈曲部１６０４が形成される。
それと同時に、一方の取り付け板部１８には、第１上平坦型部３２１２により第１上平坦部１８０４が形成され、上傾斜型部３２１４により上傾斜部１８０６が形成され、第２上平坦型部３２１６により第２上平坦部１８０８が形成される。
また、他方の取り付け板部２０には、第１下平坦型部３４１０により第１下平坦部２００４が形成され、下傾斜型部３４１２により下傾斜部２００６が形成され、第２下平坦型部３４１４により第２下平坦部２００８が形成される。 Then, when the upper die 32 further swings and the lower die 34 rises, the pair of mounting plate portions 16 are overlapped with each other as shown in FIG.
At this time, as shown in Figures 5 and 1 (B), the arc-shaped plate portion 14 is wrapped around almost the entire circumference of the outer surface of the pipe 12 by the arc-shaped upper mold portion 3204 and the arc-shaped lower mold portion 3402, the first curved portion 1002 is formed by the first curved upper mold portion 3206, and the second curved portion 1004 is formed by the second curved lower mold portion 3404.
Then, while the inner surface 1802 of one mounting plate portion 18 and the inner surface 2002 of the other mounting plate portion 20 are overlapped, the first bent portion 1602 is formed by the first bent upper mold portion 3208 and the first bent lower mold portion 3406, and the second bent portion 1604 is formed by the second bent upper mold portion 3210 and the second bent lower mold portion 3408.
At the same time, on one of the mounting plate portions 18, a first upper flat portion 1804 is formed by a first upper flat portion 3212, an upper inclined portion 1806 is formed by an upper inclined portion 3214, and a second upper flat portion 1808 is formed by a second upper flat portion 3216.
In addition, on the other mounting plate portion 20, a first lower flat portion 2004 is formed by a first lower flat mold portion 3410, a lower inclined portion 2006 is formed by a lower inclined mold portion 3412, and a second lower flat portion 2008 is formed by a second lower flat mold portion 3414.

パイプクランプ１０Ａの成型加工が完了したら、上型３２を反時計回りに揺動させ、下型３４を下降させて成型されたパイプクランプ１０Ａを取り出す。そして、図１に示すように、一対の取り付け板部１６のボルト挿通孔２２にボルトＢを通し、一対の取り付け板部１６をエンジンルーム内に設けられたブラケット２６の被取り付け面２６０２に載せ、ブラケット２６の雌ねじ２６０４にボルトＢを螺合し、ボルトＢを締結する。
これにより円弧状板部１４がパイプ１２に巻き付いて円弧状板部１４の内周面１４０２がパイプ１２の外周面１２０２に接触することでパイプ１２が保持され、重ね合わされた一対の取り付け板部１６がボルトＢの頭部とブラケット２６の被取り付け面２６０２とにより挟持されることでパイプクランプ１０Ａがブラケット２６に取り付けられる。 When the molding of the pipe clamp 10A is completed, the upper die 32 is swung counterclockwise and the lower die 34 is lowered to remove the molded pipe clamp 10A. Then, as shown in Figure 1, the bolts B are passed through the bolt insertion holes 22 of the pair of mounting plate parts 16, the pair of mounting plate parts 16 are placed on the mounting surface 2602 of the bracket 26 provided in the engine compartment, and the bolts B are screwed into the female threads 2604 of the bracket 26 and tightened.
As a result, the arc-shaped plate portion 14 wraps around the pipe 12 and the inner surface 1402 of the arc-shaped plate portion 14 comes into contact with the outer surface 1202 of the pipe 12, thereby holding the pipe 12, and the pair of overlapping mounting plate portions 16 are clamped between the head of the bolt B and the mounting surface 2602 of the bracket 26, thereby attaching the pipe clamp 10A to the bracket 26.

このように、本実施の形態によれば、金属製のパイプクランプ１０Ａは、パイプ１２の外周面１２０２を保持する円弧状板部１４と、円弧状板部１４の周方向の両端から延在しそれらの内面が重ね合わされる一対の取り付け板部１６とを備え、一方の取り付け板部１８の内面１８０２と、この一方の取り付け板部１８が接続する円弧状板部１４の一端で円弧状板部１４の内周面１４０２が接触するパイプ１２の外周面１２０２の箇所における接線１２Ａとがなす角度θ１は９０度以下であり、他方の取り付け板部２０の内面２００２と、この他方の取り付け板部２０が接続する円弧状板部１４の他端で円弧状板部１４の内周面１４０２が接触するパイプ１２の外周面１２０２の箇所における接線１２Ｂとがなす角度θ２は鈍角であるため、パイプ１２の外周面１２０２とパイプクランプ１０Ａの内面（パイプクランプ１０Ａの第１湾曲部１００２の内面および第２湾曲部１００４の内面）との間の隙間Ｓを減少させ、円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保してパイプ１２を取り付けることができる。
したがって、パイプ１２の保持力を向上させるとともに、容易な取り付け作業により作業効率を改善しつつコストを削減する上で有利となる。
また、第１湾曲部１００２の頂部１００２Ａと第２湾曲部１００４の頂部１００４Ａとの間の距離Ｄ１を、一方の取り付け板部１８と他方の取り付け板部２０の厚さ（板部の厚さ）Ｔ１よりも小さい値で形成しているため、パイプ１２の外周面１２０２とパイプクランプ１０Ａの内面との間の隙間Ｓを確実に減少させ、円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保できるため、パイプ１２の保持力を向上させる上で有利となる。
また、一対の取り付け板部１６の内面が重ね合わされた箇所のうちパイプ１２の外周面１２０２に最も近い箇所と、パイプ１２の外周面１２０２との距離Ｄ２を、一方の取り付け板部１８と他方の取り付け板部２０の厚さ（板部の厚さ）Ｔ１よりも小さい値で形成しているため、パイプ１２の外周面１２０２とパイプクランプ１０Ａの内面との間の隙間Ｓを確実に減少させ、円弧状板部１４の内周面１４０２とパイプ１２の外周面１２０２との接触面積を大きく確保できるため、パイプ１２の保持力を向上させる上で有利となる。
また、一対の取り付け板部１６の円弧状板部１４から離れた端部にボルト挿通孔２２が形成され、一対の取り付け板部１６のボルト挿通孔２２に挿通されたボルトＢが被取り付け面２６０２に締結されることでパイプクランプ１０Ａが被取り付け面２６０２に取り付けられる構成とすれば、円弧状板部１４とボルトＢとの間で所定の距離を確保できるため、近傍に配置された他のパイプとの接触を回避する上で有利となる。 Thus, according to this embodiment, the metal pipe clamp 10A includes an arc-shaped plate portion 14 that holds an outer peripheral surface 1202 of a pipe 12, and a pair of mounting plates 16 that extend from both circumferential ends of the arc-shaped plate portion 14 and have their inner surfaces overlapped, and the angle θ1 between the inner surface 1802 of one mounting plate portion 18 and a tangent 12A at a location of the outer peripheral surface 1202 of the pipe 12 where the inner peripheral surface 1402 of the arc-shaped plate portion 14 contacts at one end of the arc-shaped plate portion 14 to which the one mounting plate portion 18 is connected is 90 degrees or less, and the angle θ1 between the inner surface 20 of the other mounting plate portion 20 is 90 degrees or less. 002 and the tangent 12B at the point of the outer peripheral surface 1202 of the pipe 12 where the inner peripheral surface 1402 of the arc-shaped plate portion 14 contacts the other end of the arc-shaped plate portion 14 to which the other mounting plate portion 20 is connected is an obtuse angle, so that the gap S between the outer peripheral surface 1202 of the pipe 12 and the inner surface of the pipe clamp 10A (the inner surface of the first curved portion 1002 and the inner surface of the second curved portion 1004 of the pipe clamp 10A) is reduced, and the contact area between the inner surface 1402 of the arc-shaped plate portion 14 and the outer peripheral surface 1202 of the pipe 12 is increased, allowing the pipe 12 to be attached.
Therefore, the holding force of the pipe 12 is improved, and the installation work is simplified, which is advantageous in terms of improving work efficiency and reducing costs.
In addition, the distance D1 between the top 1002A of the first curved portion 1002 and the top 1004A of the second curved portion 1004 is formed to be smaller than the thickness (plate thickness) T1 between one mounting plate portion 18 and the other mounting plate portion 20, thereby reliably reducing the gap S between the outer surface 1202 of the pipe 12 and the inner surface of the pipe clamp 10A and ensuring a large contact area between the inner surface 1402 of the arc-shaped plate portion 14 and the outer surface 1202 of the pipe 12, which is advantageous in improving the holding force of the pipe 12.
In addition, the distance D2 between the point where the inner surfaces of the pair of mounting plate portions 16 are overlapped and the outer surface 1202 of the pipe 12 is closest to the outer surface 1202 of the pipe 12, is formed to be smaller than the thickness (plate thickness) T1 of one mounting plate portion 18 and the other mounting plate portion 20.This reliably reduces the gap S between the outer surface 1202 of the pipe 12 and the inner surface of the pipe clamp 10A and ensures a large contact area between the inner surface 1402 of the arc-shaped plate portion 14 and the outer surface 1202 of the pipe 12, which is advantageous in improving the holding force of the pipe 12.
In addition, if a bolt insertion hole 22 is formed at the end of the pair of mounting plate portions 16 away from the arc-shaped plate portions 14, and the bolt B inserted into the bolt insertion hole 22 of the pair of mounting plate portions 16 is fastened to the mounting surface 2602, the pipe clamp 10A is attached to the mounting surface 2602, a predetermined distance can be secured between the arc-shaped plate portion 14 and the bolt B, which is advantageous in avoiding contact with other pipes placed nearby.

（第２の実施の形態）
第１の実施の形態のパイプクランプ１０Ａは、一方の取り付け板部１８の内面１８０２と他方の取り付け板部２０の内面２００２とが重ね合わされ、第１湾曲部１００２、第２湾曲部１００４、第１屈曲部１６０２、および第２屈曲部１６０４が形成されていたが、第２の実施の形態のパイプクランプ１０Ｂは、第１湾曲部１００２および第２湾曲部１００４が形成され、第１屈曲部１６０２および第２屈曲部１６０４が形成されていない構成となっている。
なお、以下の実施の形態の説明では、第１の実施の形態と同様な個所、部材に同一の符号を付してその説明を省略し、第１の実施の形態と異なった個所について重点的に説明する。 Second Embodiment
In the pipe clamp 10A of the first embodiment, the inner surface 1802 of one mounting plate portion 18 and the inner surface 2002 of the other mounting plate portion 20 are overlapped to form a first curved portion 1002, a second curved portion 1004, a first bent portion 1602, and a second bent portion 1604. In contrast, in the pipe clamp 10B of the second embodiment, the first curved portion 1002 and the second curved portion 1004 are formed, but the first bent portion 1602 and the second bent portion 1604 are not formed.
In the following description of the embodiment, the same parts and members as those in the first embodiment are denoted by the same reference numerals and their description will be omitted, and the description will focus on the parts that are different from the first embodiment.

図７に示すように、第２の実施の形態のパイプクランプ１０Ｂは、一方の取り付け板部４８の内面４８０２と他方の取り付け板部５０の内面５００２とが重ね合わされ、第１湾曲部１００２および第２湾曲部１００４が形成され、一対の取り付け板部４６の内面が重ね合わされた箇所はボルト挿通孔２２側の端部まで直線状に延在している。
このような本実施の形態のパイプクランプ１０Ｂを成型する金型３０では、上型３２の型面３２Ａに、円弧状上型部３２０４、第１湾曲上型部３２０６が設けられ、下型３４の型面３４Ａに、円弧状下型部３４０２、第２湾曲下型部３４０４が設けられ、一対の取り付け板部４６を押圧する箇所は直線状に延在している。
パイプクランプ１０Ｂによるパイプ１２の取り付け方法については、第１の実施の形態と同様である。 As shown in Figure 7, in the second embodiment of the pipe clamp 10B, the inner surface 4802 of one mounting plate portion 48 and the inner surface 5002 of the other mounting plate portion 50 are overlapped to form a first curved portion 1002 and a second curved portion 1004, and the area where the inner surfaces of the pair of mounting plate portions 46 are overlapped extends in a straight line to the end on the bolt insertion hole 22 side.
In the mold 30 for molding the pipe clamp 10B of this embodiment, an arc-shaped upper mold portion 3204 and a first curved upper mold portion 3206 are provided on the mold surface 32A of the upper mold 32, and an arc-shaped lower mold portion 3402 and a second curved lower mold portion 3404 are provided on the mold surface 34A of the lower mold 34, and the points for pressing the pair of mounting plate portions 46 extend in a straight line.
The method of attaching the pipe 12 using the pipe clamp 10B is the same as in the first embodiment.

このような本実施の形態のパイプクランプ１０Ｂによっても、第１の実施の形態と同様の効果を奏する。
また、パイプ１２の下方にブラケット２６の被取り付け面２６０２が配置されていない場合、第１屈曲部１６０２および第２屈曲部１６０４を形成せずに取り付け可能である。したがって、本実施の形態のパイプクランプ１０Ｂは容易に成型する上で有利となる。 The pipe clamp 10B of this embodiment also provides the same effects as the first embodiment.
Furthermore, in the case where the mounting surface 2602 of the bracket 26 is not disposed below the pipe 12, mounting is possible without forming the first bent portion 1602 and the second bent portion 1604. Therefore, the pipe clamp 10B of this embodiment is advantageous in terms of easy molding.

１０Ａ、１０Ｂパイプクランプ
１００２Ａ、１００４Ａ頂部
１２パイプ
１４円弧状板部
１６、４６一対の取り付け板部
１８、４８一方の取り付け板部
１８０４第１上平坦部
１８０６上傾斜部
１８０８第２上平坦部
２０、５０他方の取り付け板部
２００４第１下平坦部
２００６下傾斜部
２００８第２下平坦部
２２ボルト挿通孔
２６ブラケット
２６０２被取り付け面
３０金型
３２上型
３２Ａ型面
３２０２支軸部
３２０４円弧状上型部
３２０６第１湾曲上型部
３２０８第１屈曲上型部
３２１０第２屈曲上型部
３２１２第１上平坦型部
３２１４上傾斜型部
３２１６第２上平坦型部
３４下型
３４Ａ型面
３４０２円弧状下型部
３４０４第２湾曲下型部
３４０６第１屈曲下型部
３４０８第２屈曲下型部
３４１０第１下平坦型部
３４１２下傾斜型部
３４１４第２下平坦型部 10A, 10B Pipe clamp 1002A, 1004A Top portion 12 Pipe 14 Arc-shaped plate portion 16, 46 Pair of mounting plate portions 18, 48 One mounting plate portion 1804 First upper flat portion 1806 Upper inclined portion 1808 Second upper flat portion 20, 50 Other mounting plate portion 2004 First lower flat portion 2006 Lower inclined portion 2008 Second lower flat portion 22 Bolt insertion hole 26 Bracket 2602 Mounting surface 30 Mold 32 Upper mold 32A Mold surface 3202 Support shaft portion 3204 Arc-shaped upper mold portion 3206 First curved upper mold portion 3208 First bent upper mold portion 3210 Second bent upper mold portion 3212 First upper flat mold portion 3214 Upper inclined mold portion 3216 Second upper flat mold part 34 Lower mold part 34A Mold surface 3402 Arc-shaped lower mold part 3404 Second curved lower mold part 3406 First bent lower mold part 3408 Second bent lower mold part 3410 First lower flat mold part 3412 Lower inclined mold part 3414 Second lower flat mold part

Claims

A pipe mounting structure using a metal pipe clamp,
The pipe clamp includes an arc-shaped plate portion that holds an outer peripheral surface of a pipe, and a pair of mounting plate portions that extend from both ends of the arc-shaped plate portion in the circumferential direction and have their inner surfaces overlapped with each other,
an angle formed by an inner surface of one of the pair of mounting plate portions and a tangent at a location of an outer circumferential surface of the pipe where the inner circumferential surface of the arc-shaped plate portion contacts with one of both ends of the arc-shaped plate portion to which the one mounting plate portion is connected is 90 degrees or less;
an angle formed by an inner surface of the other of the pair of mounting plate portions and a tangent at a location of the outer circumferential surface of the pipe where the inner circumferential surface of the arc-shaped plate portion contacts the other end of the arc-shaped plate portion to which the other mounting plate portion is connected is an obtuse angle;
2. A pipe mounting structure using a pipe clamp.

the one mounting plate portion and one of both ends of the arc-shaped plate portion are connected via a first curved portion,
The other mounting plate portion and the other end of the arc-shaped plate portion are connected via a second curved portion,
If the thickness of the first mounting plate portion and the thickness of the second mounting plate portion are both T1,
The distance between the apex of the first curved portion and the apex of the second curved portion is smaller than T1.
2. A pipe mounting structure using the pipe clamp according to claim 1.

The distance between the outer circumferential surface of the pipe and a point closest to the outer circumferential surface of the pipe among the points where the inner surfaces of the pair of mounting plate parts are overlapped is smaller than T1.
3. A pipe mounting structure using a pipe clamp according to claim 2.

A bolt insertion hole is formed at an end of the pair of mounting plate portions away from the arc-shaped plate portion,
The pipe clamp is attached to the mounting surface by fastening the bolts inserted into the bolt insertion holes of the pair of mounting plate portions to the mounting surface.
2. A pipe mounting structure using a pipe clamp according to claim 1.