JPH03121393A - Bellows pipe - Google Patents
Bellows pipeInfo
- Publication number
- JPH03121393A JPH03121393A JP1258179A JP25817989A JPH03121393A JP H03121393 A JPH03121393 A JP H03121393A JP 1258179 A JP1258179 A JP 1258179A JP 25817989 A JP25817989 A JP 25817989A JP H03121393 A JPH03121393 A JP H03121393A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- bellows tube
- bellows pipe
- tube
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims description 13
- 238000005452 bending Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は蛇腹管に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a bellows tube.
（従来の技術）
多層蛇腹管は可撓性に富んでいて外部からの衝撃を吸収
し、また振動吸収の機能をも有するために、自動車の排
気装置の配管、船舶のエンジン廻りの配管、空調関係の
ポンプ、コンプレッサの配管などに広く使用されている
。(Prior art) Multilayer bellows pipes are highly flexible and absorb external shocks, and also have the function of absorbing vibrations, so they are used in piping for automobile exhaust systems, piping around ship engines, and air conditioning. Widely used for related pumps and compressor piping.
υＣ来の蛇腹管１は、第５図に示すように軸方向に管壁
厚みが一定に形成されている円筒体を用いて波付は成形
し、同一形状の山部２が等間隔で形成されているもので
あった。As shown in Fig. 5, the bellows tube 1 from υC is formed by forming corrugations using a cylindrical body whose tube wall thickness is constant in the axial direction, and crests 2 of the same shape are formed at equal intervals. It was something that had been done.
（発明が解決しようとする課閉）
前述の従来の蛇腹管に曲げ変位が加えられると、第５図
の多層蛇腹管１の固定部４に近傍する蛇腹部３にかかる
曲げモーメンｌ〜が大きくなるので、この部分に応力が
集中して発生し、前記蛇腹部３で蛇腹管１の折損事故の
発生が比較的多かった。(Imposition to be Solved by the Invention) When a bending displacement is applied to the conventional bellows pipe described above, the bending moment l~ applied to the bellows portion 3 near the fixed portion 4 of the multilayer bellows pipe 1 shown in FIG. 5 becomes large. As a result, stress is concentrated in this portion, and breakage accidents of the bellows tube 1 at the bellows portion 3 occur relatively frequently.
また、従来の蛇腹管では、全体の壁厚が一定で且つ等間
隔で蛇腹が形成されているために、蛇腹管が全長にわた
って同一の共振周波数を有し、この共振周波数では蛇腹
管が全長で共振するため、容易に破損事故の発生に至る
ことがあった。In addition, in conventional bellows tubes, the overall wall thickness is constant and the bellows are formed at equal intervals, so the bellows tube has the same resonant frequency over its entire length. Due to resonance, damage could easily occur.
本発明は、前述したような蛇腹管の現状に鑑みてなされ
たもので、その目的は曲げ変位が加えられても固定部近
傍における剛性を増して折損事故を防止し、また、耐振
強度も向上した蛇腹管を提供することにある。The present invention was made in view of the current state of bellows pipes as described above, and its purpose is to increase the rigidity near the fixed part even when bending displacement is applied, thereby preventing breakage accidents, and also improving vibration resistance. The purpose of the present invention is to provide a bellows tube with a high quality.
（課題を解決するための手段）
前記目的を達成するために、本発明の蛇腹管は長手軸方
向の少くとも一端部の肉厚が池の部分より厚い金属円筒
体の周面か波付は成形された構成となっている。(Means for Solving the Problems) In order to achieve the above object, the bellows pipe of the present invention has a metal cylindrical body whose wall thickness at least at one end in the longitudinal axis direction is thicker than the pond part, and the corrugation is formed on the circumference of the metal cylinder. It has a molded configuration.
（１乍用）
本発明の蛇腹管は長手軸方向の少くとも一端部の肉厚か
池の部分より厚い金属円筒体の周面を波付は成形するこ
とにより成形されているので、端部附近の剛性か池の部
分のそれより大きいなめ変形しにくく、曲げ変位が加え
られても一端部附近ての発生応力は小さくなる。従って
、蛇腹管全長に亘る応力分布を肉厚の変化により等分布
させ、折損事故の発生を防止する。(For 1 piece) The bellows pipe of the present invention is formed by forming a corrugation on the circumferential surface of a metal cylindrical body that is thicker than the wall portion at least at one end in the longitudinal axis direction. The rigidity of the surrounding area is greater than that of the pond part, making it difficult to deform, and even if bending displacement is applied, the stress generated near one end becomes small. Therefore, the stress distribution over the entire length of the bellows tube is uniformly distributed by changing the wall thickness, and breakage accidents are prevented from occurring.
また、蛇腹管の軸方向に亘って管壁が異なる部分を形成
して軸方向の各部分における蛇腹管の共振周波数を異な
らせることにより、全体が共振振動して破損しないよう
に耐振強度を向上させることが出来る。In addition, by forming different sections of the tube wall in the axial direction of the bellows tube and making the resonance frequency of the bellows tube different in each section in the axial direction, the vibration resistance strength is improved to prevent the whole body from resonant vibration and damage. I can do it.
（実施例）
以下、本発明の実施例を図面を参照して説明する。第１
図は第１の実施例の金属円筒体の断面図、第２図は第１
の実施例の蛇腹管の断面図である。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a cross-sectional view of the metal cylindrical body of the first embodiment, and the second figure is a cross-sectional view of the metal cylinder of the first embodiment.
It is a sectional view of the bellows tube of the example.
第１図に示すように、第１の実施例の金属円筒体５ａは
、軸方向に板厚が異なり、両端部側で板厚が厚くなって
いる。このような形状の金属円筒体５ａに対して公知の
波付は成形機を使用して波付は成形を施し、第２図に示
すような蛇腹管６ａが形成されている。この第１の実施
例に係る蛇腹管６ａは、固定部４ａ、４ｂに接続される
両端部側の管壁が池部分よりも厚く剛性が大となってい
る。As shown in FIG. 1, the metal cylindrical body 5a of the first embodiment has different plate thicknesses in the axial direction, and is thicker at both ends. The metal cylindrical body 5a having such a shape is subjected to corrugation forming using a known corrugation forming machine, thereby forming a bellows tube 6a as shown in FIG. In the bellows tube 6a according to the first embodiment, the tube walls at both ends connected to the fixed portions 4a and 4b are thicker and more rigid than the pond portions.
このため、蛇腹管６ａに曲げ変位が与えられても固定部
４ａ、４ｂの近傍における剛性が増して、変形しにくく
なり発生応力が小さくなるなめ全体として応力分布が等
しくなって、蛇腹管６ａが折損することがない。Therefore, even if bending displacement is applied to the bellows tube 6a, the rigidity near the fixing parts 4a and 4b increases, making it difficult to deform and generating less stress.The stress distribution becomes equal as a whole, and the bellows tube 6a becomes Will not break.
また、第１の実施例では固定部４ａ、４ｂ側の管壁がそ
の池の部分よりも厚いため、蛇腹管６ａが中央部と両端
部とで共振周波数が異なるため、蛇腹管６ａが全体的に
共振状態となって破損することが防止される。Furthermore, in the first embodiment, since the tube wall on the side of the fixed parts 4a and 4b is thicker than the pond part, the resonant frequency of the bellows tube 6a is different between the center part and both ends, so that the bellows tube 6a as a whole This prevents damage due to resonance.
なお、前記実施例では両端部を肉厚部に形成したが、両
端部での雰囲気温度が大きく異なる場合には発生する応
力も当然界なるため高温側の一端部のみに肉厚部を形成
することもできる。In the above embodiment, both ends were formed with a thick wall. However, if the ambient temperature at both ends is greatly different, it is natural that stress will occur, so the thick wall is formed only on one end on the high temperature side. You can also do that.
第３図は、第２の実施例の金属円筒体の断面図、第４図
は、第２の実施例の蛇腹管の断面図である。FIG. 3 is a sectional view of a metal cylindrical body of the second embodiment, and FIG. 4 is a sectional view of a bellows tube of the second embodiment.
第３図に示すように第２の実施例の金属円筒体５１）は
、軸方向の両端部と中央部に肉厚部が形成されている。As shown in FIG. 3, the metal cylindrical body 51) of the second embodiment has thick parts formed at both ends and at the center in the axial direction.
このような形状の金属円＠体５ｂに対して公知の波付は
成形機による波付けが行われ、第・４図に示すような蛇
腹管６ｂか形成されている。The metal circle body 5b having such a shape is subjected to known corrugation using a forming machine, and a bellows tube 6b as shown in FIG. 4 is formed.
この第２の実施例に係る蛇腹管６ｂは、固定部４ａ、４
ｂに接続される両端部側と中央部の管壁が、池部分より
厚く剛性が大となっている。The bellows tube 6b according to the second embodiment has fixed parts 4a, 4
The tube walls at both ends connected to b and at the center are thicker and more rigid than the pond portion.
このため、蛇腹管６ｂに曲げ変位が与えられて、固定部
４ａ、４ｂの近傍の剛性が高まり薄肉部分に比べて変形
しにくく発生応力が小さくなる。従って全長に亘って応
力分布が等しくなり蛇腹管６ａの折損が防止されると共
に、この実施例の蛇腹管６ｂでは、中央部と両端部の管
壁が池部分よりも厚くなっているので、中央部と両端部
とで蛇腹管６ｂの共振周波数が異なり、蛇腹管６ｂが全
体的に共振状態となって破損することが防止される。Therefore, bending displacement is applied to the bellows tube 6b, and the rigidity near the fixing portions 4a, 4b increases, making it less likely to deform than the thin-walled portions and generating less stress. Therefore, the stress distribution is equal over the entire length, preventing breakage of the bellows tube 6a, and in the bellows tube 6b of this embodiment, the tube walls at the center and both ends are thicker than the pond portions, so the center The resonance frequency of the bellows tube 6b differs between the end portion and both ends, and the bellows tube 6b is prevented from being in a resonant state as a whole and being damaged.
また、第１の実施例及び第２の実施例においては、軸方
向にそれぞれ２個所或いは３個所の肉厚部か形成され、
異なる共振周波数を有する音響通過域がそれぞれ形成さ
れるので、騒音の減衰効果をも高めることが出来る。In addition, in the first embodiment and the second embodiment, two or three thick portions are formed in the axial direction, respectively.
Since acoustic passbands having different resonance frequencies are formed, the noise attenuation effect can also be enhanced.
なお、第２の実施例においては、軸方向の３個所におい
て管壁に肉厚部が形成され、蛇腹管の両端部が固定部に
接続される構成のものを示したか、本発明は実施例に限
定されるものでなく、例えば軸方向の少くとも一端部を
含めて５個所において管壁に肉厚部を形成し、蛇腹管の
中央部の肉厚部を固定部に接続する構成とすることも出
来る。In addition, in the second embodiment, thick portions are formed in the tube wall at three locations in the axial direction, and both ends of the bellows tube are connected to the fixed portion. For example, the pipe wall may have thick parts at five locations including at least one end in the axial direction, and the thick part at the center of the bellows pipe may be connected to the fixed part. You can also do that.
（発明の効果）
以上詳細に説明したように、本発明によると、固定部近
傍での剛性が高められ、曲げ変位が与えられても固定部
近傍において折損事故が発生することがなく、かつ高温
側における応力低下について効果があり、さらに耐振強
度が向上し、騒音の減衰効果も高められる。(Effects of the Invention) As described above in detail, according to the present invention, the rigidity near the fixed part is increased, breakage accidents do not occur near the fixed part even when bending displacement is applied, and high temperature This has the effect of reducing stress on the sides, and also improves vibration resistance and noise damping.
第１図及び第２図は第１の実施例を説明する図で、第１
図は金属円筒体の断面図、第２図は蛇腹管の断面図、第
３図及び第４図は第２の実施例を１・・・山部、
筒体、６ａ、
４．４ａ、
４ｂ・・・固定部、５ａ、５ｂ・・・金属円６ｂ・・・
蛇腹管。FIG. 1 and FIG. 2 are diagrams explaining the first embodiment.
The figure is a cross-sectional view of a metal cylindrical body, Figure 2 is a cross-sectional view of a bellows tube, and Figures 3 and 4 show the second embodiment. ...Fixed part, 5a, 5b...Metal circle 6b...
Bellows tube.
Claims (1)
金属円筒体の周面が波付け成形されてなる蛇腹管。A bellows tube formed by corrugating the circumferential surface of a metal cylindrical body whose wall thickness at least at one end in the longitudinal axis direction is thicker than the pond part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258179A JP2750459B2 (en) | 1989-10-03 | 1989-10-03 | Bellows tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1258179A JP2750459B2 (en) | 1989-10-03 | 1989-10-03 | Bellows tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03121393A true JPH03121393A (en) | 1991-05-23 |
| JP2750459B2 JP2750459B2 (en) | 1998-05-13 |
Family
ID=17316618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1258179A Expired - Fee Related JP2750459B2 (en) | 1989-10-03 | 1989-10-03 | Bellows tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2750459B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007017106A1 (en) * | 2005-08-06 | 2007-02-15 | Witzenmann Gmbh | Coolant conduit |
| WO2007105313A1 (en) * | 2006-03-13 | 2007-09-20 | Osaka Rasenkan Kogyo Co., Ltd. | Flexible tube and method of producing the same |
| DE102005032034B4 (en) * | 2004-07-08 | 2009-04-02 | Denso Corp., Kariya-shi | Pressure resistant vibration damping hose and method for its manufacture |
| DE102005033271B4 (en) * | 2004-07-15 | 2009-05-28 | Tokai Rubber Industries, Ltd., Komaki | High pressure resistant vibration damping hose and method for its manufacture |
| JP2010183707A (en) * | 2009-02-04 | 2010-08-19 | Yazaki Corp | Grommet |
| WO2018139577A1 (en) * | 2017-01-27 | 2018-08-02 | 日本精工株式会社 | Hollow torque transmission member, manufacturing method therefor, intermediate shaft, and automobile steering device |
-
1989
- 1989-10-03 JP JP1258179A patent/JP2750459B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005032034B4 (en) * | 2004-07-08 | 2009-04-02 | Denso Corp., Kariya-shi | Pressure resistant vibration damping hose and method for its manufacture |
| DE102005033271B4 (en) * | 2004-07-15 | 2009-05-28 | Tokai Rubber Industries, Ltd., Komaki | High pressure resistant vibration damping hose and method for its manufacture |
| WO2007017106A1 (en) * | 2005-08-06 | 2007-02-15 | Witzenmann Gmbh | Coolant conduit |
| WO2007105313A1 (en) * | 2006-03-13 | 2007-09-20 | Osaka Rasenkan Kogyo Co., Ltd. | Flexible tube and method of producing the same |
| JP2010183707A (en) * | 2009-02-04 | 2010-08-19 | Yazaki Corp | Grommet |
| WO2018139577A1 (en) * | 2017-01-27 | 2018-08-02 | 日本精工株式会社 | Hollow torque transmission member, manufacturing method therefor, intermediate shaft, and automobile steering device |
| CN110226050A (en) * | 2017-01-27 | 2019-09-10 | 日本精工株式会社 | Hollow torque transmission member and its manufacturing method and jackshaft and automobile steering device |
| US20190388947A1 (en) * | 2017-01-27 | 2019-12-26 | Nsk Ltd. | Hollow Torque Transmission Member and Manufacturing Method Thereof, Intermediate Shaft, and Steering Apparatus for Automobile |
| CN110226050B (en) * | 2017-01-27 | 2022-04-29 | 日本精工株式会社 | Hollow torque transmission member, method for manufacturing same, intermediate shaft, and steering device for automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2750459B2 (en) | 1998-05-13 |
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Legal Events
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