JPS6133368B2 - - Google Patents
Info
- Publication number
- JPS6133368B2 JPS6133368B2 JP2731079A JP2731079A JPS6133368B2 JP S6133368 B2 JPS6133368 B2 JP S6133368B2 JP 2731079 A JP2731079 A JP 2731079A JP 2731079 A JP2731079 A JP 2731079A JP S6133368 B2 JPS6133368 B2 JP S6133368B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- rubber hose
- hose
- measuring
- fittings
- 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.)
- Expired
Links
- 229920001971 elastomer Polymers 0.000 claims description 49
- 239000005060 rubber Substances 0.000 claims description 49
- 230000006866 deterioration Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
本発明はゴムホースの劣化を測定する方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for measuring deterioration of rubber hoses.
ゴムホースは液体または気体を一方から他方に
輸送する目的で、単独でまたは機械の部品として
広く使用されているが、長期間使用しているとゴ
ムが老化し、ホースに亀裂が入り、ガスまたは液
体漏れを生ずるという欠点を有する。そのためゴ
ムホースの劣化の測定は、ガス中毒による人命の
危険を防止するためにも、また機械を安全に運転
するためにも非常に重要である。 Rubber hoses are widely used alone or as parts of machines for the purpose of transporting liquids or gases from one side to another, but after long-term use, the rubber ages and the hoses crack, causing gas or liquid It has the disadvantage of causing leakage. Therefore, measuring the deterioration of rubber hoses is very important to prevent danger to human life due to gas poisoning and to operate machinery safely.
従来ゴムホースの劣化測定方法としては、亀裂
の有無を肉眼的に観察する等の官能的な測定方法
が一般的であるが、この様な方法では定量化が困
難であり、また、自動車のラジエーターホース等
の機械部品として使用した場合、機械の運転中に
は測定できず、また複雑な機械の部品として使用
した場合には、測定毎に機械からゴムホースを取
り外して測定しなければならない等の問題があつ
た。 Conventional methods for measuring the deterioration of rubber hoses have generally been sensory methods such as visually observing the presence or absence of cracks, but such methods are difficult to quantify; When used as a machine part such as a machine, it cannot be measured while the machine is running, and when used as a part of a complex machine, there are problems such as having to remove the rubber hose from the machine each time measurements are taken. It was hot.
本発明の方法は上記の問題を解決した簡便で定
量的なゴムホースの劣化測定方法を提供するもの
である。 The method of the present invention solves the above problems and provides a simple and quantitative method for measuring the deterioration of rubber hoses.
本発明者は、ゴムホースが環境温度、オゾン、
振動による歪の繰返し、その他の原因により周方
向に亀裂が発生し、内部へ進展して行く場合、亀
裂の深さや本数が次第に増大して行く点に着目
し、ゴムホースに電導性を付与しておけば、上記
亀裂の発生度合を電気抵抗の変化によつて検知で
き、それによりゴムホースの劣化を定量的に測定
し得ることを見出し、本発明を完成した。 The inventor has discovered that the rubber hose
We focused on the fact that when cracks occur in the circumferential direction due to repeated distortion due to vibration or other causes and propagate inward, the depth and number of cracks gradually increase, and we added electrical conductivity to the rubber hose. The inventors have discovered that the degree of occurrence of the above-mentioned cracks can be detected by the change in electrical resistance, thereby making it possible to quantitatively measure the deterioration of the rubber hose, and have completed the present invention.
本発明の測定方法は、ゴムホースの全外周ない
しはホースの長手方向に該ゴムホース外周面に露
出する様にして１ないし複数本の帯状または線状
の導電性ゴム層を適当な深さに埋設し、この導電
性ゴムに接触する様に取付金具２個にて該ゴムホ
ースを挾み、上記２個の金具間のゴムホースの電
気抵抗を測定し、抵抗値の大きさによりゴムホー
スの劣化度を判定することを特徴とする。 The measuring method of the present invention involves embedding one or more strip-shaped or linear conductive rubber layers at an appropriate depth so that they are exposed on the entire outer circumference of a rubber hose or on the outer circumferential surface of the rubber hose in the longitudinal direction of the hose. The rubber hose is sandwiched between two mounting fittings so as to be in contact with the conductive rubber, the electrical resistance of the rubber hose is measured between the two fittings, and the degree of deterioration of the rubber hose is determined based on the magnitude of the resistance value. It is characterized by
本発明に使用するゴムホースは、第１図に示す
様にホース１の肉厚や直径に応じて、該ホース１
の外周面に１本または複数本の導電性ゴム２を適
当な幅と深さで埋め込むことにより得られる。導
電性ゴム２を埋め込む方法は、ホース１の表面を
所定の大きさで切り取り、生じた溝に埋め込んで
も良く、またホース１の形成時にホース１の所望
部位に導電性ゴム２が線状または帯状に混入され
る様に加工したノズルを用いる方法でも良い。以
上の如くゴムホース１の一部を導電性ゴム２とす
る代りにホース１全体を導電性ゴム２で製造して
も良い。 As shown in FIG. 1, the rubber hose used in the present invention is made of
It is obtained by embedding one or more conductive rubbers 2 at an appropriate width and depth in the outer circumferential surface of. The method of embedding the conductive rubber 2 may be to cut the surface of the hose 1 to a predetermined size and embed it in the groove formed.Alternatively, when forming the hose 1, the conductive rubber 2 may be placed in a line or band shape at a desired part of the hose 1. It is also possible to use a nozzle that has been processed so that it can be mixed into the water. Instead of making a part of the rubber hose 1 from the conductive rubber 2 as described above, the entire hose 1 may be made from the conductive rubber 2.
本発明に使用する取付金具は、前記導電性ゴム
ホース１から電気的信号を取り出すために、従来
のクリツプを改良し、例えば第２図Ａ，Ｂに示す
ようにコネクタ接続用端子４，４′とゴムホース
把持部５，５′からなる。取付金具３，３′はクリ
ツプに限らず、導電性ゴムホース１から電気信号
を取り出すことのできる形状のものであれば、ど
の様なものでもよい。 In order to extract electrical signals from the conductive rubber hose 1, the mounting bracket used in the present invention is an improved conventional clip, and includes connector connection terminals 4 and 4' as shown in FIGS. 2A and 2B. It consists of rubber hose gripping parts 5, 5'. The mounting fittings 3, 3' are not limited to clips, but may be of any shape as long as they can extract electrical signals from the conductive rubber hose 1.
測定に際しては、導電性ゴム２が埋設されたゴ
ムホース１に、第３図に示す様に金具３または
３′を２個取り付け、金具３または３′上のコネク
タ接続用端子４または４′と電気抵抗計７とを電
線６で接続して、ゴムホース１の抵抗値の変化を
求め、その値よりゴムホース１の劣化程度を求め
る。 When making measurements, attach two metal fittings 3 or 3' to the rubber hose 1 in which the conductive rubber 2 is buried, as shown in Figure 3, and connect the connector connection terminals 4 or 4' on the metal fittings 3 or 3' to the electrical A resistance meter 7 is connected with an electric wire 6 to determine a change in the resistance value of the rubber hose 1, and the degree of deterioration of the rubber hose 1 is determined from that value.
本発明の測定方法は、自動車用ラジエーターホ
ースの様にエンジンルーム内にあり、運転中は外
部より見えない位置にあるホースの劣化測定方法
として特に有用である。すなわち、従来不可能で
あつた、走行中の自動車に塔載した状態でのラジ
エーターホースの劣化測定も本発明によれば容易
に行なうことができる。さらに本発明によれば、
複雑な機械内部へ取り付けたゴムホースの劣化測
定も容易であり、さらにゴムホースの経時劣化特
性の試験において、例えば電気信号の記録装置に
接続することにより、自動的、連続的に測定結果
を記録することもできる。また抵抗計の出力信号
を予め定めた特定の値と比較する回路に接続せし
め、交換時期に来た事を事前に警告し得るように
することにより、予防安全効果を期待することも
できる等多くの利点を有する。 The measuring method of the present invention is particularly useful as a method for measuring deterioration of hoses such as radiator hoses for automobiles, which are located in the engine compartment and are not visible from the outside during operation. That is, according to the present invention, it is possible to easily measure the deterioration of a radiator hose mounted on a moving vehicle, which was previously impossible. Furthermore, according to the present invention,
It is easy to measure the deterioration of rubber hoses installed inside complex machines, and when testing the aging characteristics of rubber hoses, it is possible to automatically and continuously record measurement results by connecting to an electrical signal recording device, for example. You can also do it. In addition, by connecting the output signal of the ohmmeter to a circuit that compares it with a predetermined specific value, it is possible to warn in advance that it is time to replace the ohmmeter, which can be expected to have preventive safety effects, etc. It has the following advantages.
第１図は本発明に使用するゴムホースを表わす
図、第２図Ａ，Ｂは本発明に使用する取付金具を
表わす図、第３図はゴムホーの抵抗測定法の一例
を表わす図である。
１……ゴムホース、２……導電性ゴム、３，
３′……取付金具、４，４′……コネクタ接続用端
子、５，５′……ゴムホース把持部、６……電
線、７……抵抗計。
FIG. 1 is a diagram showing a rubber hose used in the present invention, FIGS. 2A and B are diagrams showing a mounting bracket used in the present invention, and FIG. 3 is a diagram showing an example of a method for measuring the resistance of a rubber hose. 1...Rubber hose, 2...Conductive rubber, 3,
3'... Mounting bracket, 4, 4'... Connector connection terminal, 5, 5'... Rubber hose grip, 6... Electric wire, 7... Resistance meter.
Claims (1)
周面に露出する様に１ないし複数本の適当な厚さ
の帯状または線状の導電性ゴムを埋め込み、この
ようにしたホースに前記導電性ゴムに接触するよ
うに取付金具を２個取付けるとともに該金具に電
気抵抗計からの端子を接続し、これら取付金具間
の電気抵抗を測定することを特徴とするゴムホー
スの劣化測定方法。 ２ 外周面に露出する様に長手方向に１ないし複
数本の適当な厚さの帯状または線状の導電性ゴム
を埋め込んだゴムホースの導電性ゴムに接触する
ようにして取付けられるゴムホース把持部と、電
気的接続を容易にするためのコネクタ接続用端子
とからなるゴムホースの電気抵抗を測定するため
の取付金具。[Claims] 1. One or more conductive rubber strips or wires of an appropriate thickness are embedded in the longitudinal direction of the rubber hose so as to be exposed on the outer circumferential surface of the rubber hose, A method for measuring deterioration of a rubber hose, comprising: attaching two fittings so as to make contact with the conductive rubber, connecting a terminal from an electrical resistance meter to the fittings, and measuring the electrical resistance between these fittings. 2. A rubber hose gripping part that is attached to the rubber hose so as to be in contact with the conductive rubber of the rubber hose, in which one or more conductive rubber strips or lines of appropriate thickness are embedded in the longitudinal direction so as to be exposed on the outer peripheral surface; A mounting bracket for measuring the electrical resistance of a rubber hose, consisting of a connector connection terminal to facilitate electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2731079A JPS55119032A (en) | 1979-03-09 | 1979-03-09 | Method of measuring deterioration of rubber hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2731079A JPS55119032A (en) | 1979-03-09 | 1979-03-09 | Method of measuring deterioration of rubber hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55119032A JPS55119032A (en) | 1980-09-12 |
| JPS6133368B2 true JPS6133368B2 (en) | 1986-08-01 |
Family
ID=12217506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2731079A Granted JPS55119032A (en) | 1979-03-09 | 1979-03-09 | Method of measuring deterioration of rubber hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55119032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001564A1 (en) * | 1993-06-30 | 1995-01-12 | Japan Atomic Energy Research Institute | Method for detecting changes of property of rubber element |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60133300U (en) * | 1984-02-15 | 1985-09-05 | 株式会社 潤工社 | Leak detection resin tube |
| JP2011022140A (en) * | 2009-06-18 | 2011-02-03 | Nihon Univ | Load test method and damage detection method |
| JP2023088169A (en) * | 2021-12-14 | 2023-06-26 | 株式会社ブリヂストン | Estimation device, estimation method, estimation program, and learning model creation device |
-
1979
- 1979-03-09 JP JP2731079A patent/JPS55119032A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001564A1 (en) * | 1993-06-30 | 1995-01-12 | Japan Atomic Energy Research Institute | Method for detecting changes of property of rubber element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55119032A (en) | 1980-09-12 |
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