JPS61192988A - High-pressure hose - Google Patents
High-pressure hoseInfo
- Publication number
- JPS61192988A JPS61192988A JP3226685A JP3226685A JPS61192988A JP S61192988 A JPS61192988 A JP S61192988A JP 3226685 A JP3226685 A JP 3226685A JP 3226685 A JP3226685 A JP 3226685A JP S61192988 A JPS61192988 A JP S61192988A
- Authority
- JP
- Japan
- Prior art keywords
- inner tube
- hose
- layer
- wire
- pressure hose
- 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.)
- Pending
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、一般の油圧用高圧配管等に用いる高圧ホース
に関し、更に詳しくは、内管と外管との間にワイヤ補強
Ａｌｌを設けてなる高圧ホースの耐熱硬化寿命およびイ
ンバルヌ耐圧性を改良することを目的としたものである
。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a high-pressure hose used for general hydraulic high-pressure piping, etc. More specifically, the present invention relates to a high-pressure hose used for general hydraulic high-pressure piping, etc. The purpose is to improve the heat-resistant curing life and Inverne pressure resistance of high-pressure hoses.
（従来技術）
従来、上記用途に用いられる高圧ホースとしては、第３
図に示す如く、内管（ａ）、糸編組又は布層（ｂ）、中
間層（Ｃ）、およびワイヤブレード補強層（１）、 （
２）、 （３）、 （４）と中間層（１１）。(Prior art) Conventionally, as a high pressure hose used for the above purpose, the third
As shown in the figure, an inner tube (a), a thread braid or fabric layer (b), an intermediate layer (C), and a wire braid reinforcement layer (1), (
2), (3), (4) and the middle class (11).
（１２）、 （１３）の積層構造からなるものや第４図
に示すように、内管（ａ）、ワイヤブレード補強層（５
）の積層構造からなるものなどがある。尚。(12) and (13), as shown in Figure 4, the inner tube (a), the wire braid reinforcing layer (5
) has a laminated structure. still.
最外周層には外管（ｄ）が設けられている。An outer tube (d) is provided in the outermost layer.
かかる構造のホースは１通常、製品成形時及び製品使用
時（加圧時）の内管材料のワイヤ目抜けを防止するため
、内管としては、ＪＩＳ−Ａ硬さで８０〜８５稈度のか
なり高硬度のゴム等の高分子材料が用いられ、特に第３
図に示す構造の場合にはかかる現象が顕著であるため。A hose with such a structure is usually made of a material with a JIS-A hardness of 80 to 85 culm for the inner tube to prevent the wire from coming through the inner tube material during product molding and product use (when pressurized). Polymer materials such as rubber with considerably high hardness are used, especially in the third
This phenomenon is remarkable in the case of the structure shown in the figure.
糸編組又は布層（ｂ）が、高圧ホースの製造工程中にお
いて、第１ワイヤスパイクル補強層（１）のワイヤが内
管（ａ）に喰い込むのを防止するために、内管（＆）の
外周に施される。The yarn braid or fabric layer (b) is used to prevent the wires of the first wire spikele reinforcing layer (1) from digging into the inner tube (a) during the manufacturing process of the high pressure hose. ) is applied to the outer periphery of the
（発明が解決しようとする問題点）
しかしながら、上記の如き従来の構造の高圧ホースにお
いては１次のような欠点がある。(Problems to be Solved by the Invention) However, the high pressure hose having the conventional structure as described above has the following drawbacks.
即ち、従来の高圧ホースは、内管が高硬度の材料にて形
成されているため、ホースの柔軟性に欠けると共に、材
料の伸びが小さいため耐熱硬化寿命が短いという問題が
ある。即ち、ホースが繰老化を受けると、ホース自身に
折曲げ力が作用したり、あるいは油圧ポンプからのイン
パルスチャージに対して、ホースが径方向に膨張・収ｉ
ｉ＜り返すいわゆる脈動運動を伴なうと、内管にクラッ
クが発生し、流体洩れが生じ。That is, in conventional high-pressure hoses, since the inner tube is formed of a highly hard material, the hose lacks flexibility, and the elongation of the material is small, resulting in a short heat-resistant hardening life. In other words, when a hose undergoes repeated aging, bending force acts on the hose itself, or the hose expands and contracts in the radial direction in response to an impulse charge from a hydraulic pump.
When accompanied by a so-called pulsating motion, i<, cracks occur in the inner tube, causing fluid leakage.
結局は耐圧性等が低下し、高圧ホースとしての機能が損
なわれるという問題がある。Eventually, there is a problem that the pressure resistance etc. deteriorate and the function as a high pressure hose is impaired.
一方、かかる耐熱硬化寿命を改善するためには、内管と
して耐熱性の材料を選択することはもちろんだが、特に
材料の硬さを低硬度にする必要がある。しかし、内管を
低硬度の材料にて形成すると、上記の如き油圧ポンプか
らのインパルスチャージに伴なって生ずるホースの脈動
運動によって、内管材料がワイヤ補強ｍを突き、抜けて
突出するという問題が生ずる。On the other hand, in order to improve the heat-resistant hardening life, it is necessary to select a heat-resistant material for the inner tube, but it is also necessary to particularly reduce the hardness of the material. However, when the inner tube is made of a material with low hardness, there is a problem in that the inner tube material pierces the wire reinforcement m and protrudes due to the pulsating motion of the hose that occurs due to the impulse charge from the hydraulic pump as described above. occurs.
本考案はかかる事情に基づいて発明されたものであって
、上述した欠点を伴なうことのない特に耐熱硬化寿命を
改善すると共に、イノパルス耐圧性に優れた高圧ホース
を提供することを目的としたものである。The present invention was invented based on the above circumstances, and the purpose is to provide a high-pressure hose that does not have the above-mentioned drawbacks, particularly improves the heat-resistant hardening life, and has excellent Innopulse pressure resistance. This is what I did.
（解決手段）
本発明は、内管と外管との間にワイヤ補強層を設けてな
る高圧ホースにおいて、内管ｔ−ＪＩ８−Ａ硬さ６０〜
７５の高分子材料で形成すると共に、該内管の外周とワ
イヤ補強層との間に。(Solution Means) The present invention provides a high-pressure hose in which a wire reinforcing layer is provided between an inner tube and an outer tube, and the inner tube has a hardness of t-JI8-A of 60 to 60.
75 of polymeric material, and between the outer periphery of the inner tube and the wire reinforcement layer.
短繊維を配合した高分子材料からなる中間層を設けたこ
とを特徴とする。It is characterized by having an intermediate layer made of a polymeric material containing short fibers.
内管および該内管の外周とワイヤ補強層との間に設ける
中間層の高分子材料としては、押出し又は圧延可能なゴ
ム、樹脂、熱可塑性エラストマー等の高分子材料が用い
られる。もちろん。As the polymer material of the inner tube and the intermediate layer provided between the outer periphery of the inner tube and the wire reinforcing layer, extrudable or rollable polymer materials such as rubber, resin, thermoplastic elastomer, etc. are used. of course.
他の中間層および外管にもかかる高分子材料が同様にし
て用いられる。Such polymeric materials are similarly used for other intermediate layers and outer tubes.
内管の外周とワイヤ補強層との間に設ける中間層に配合
する短繊維は、高分子材料との接着性に優れ、押出し又
は圧延加工性に優れ、適当な切断強度を有する。七μロ
ース系繊維、ポリビニールアμコール系繊維、ポリアミ
ド系繊維。The short fibers blended into the intermediate layer provided between the outer periphery of the inner tube and the wire reinforcing layer have excellent adhesion to the polymeric material, excellent extrusion or rolling processability, and appropriate cutting strength. 7μ loin fiber, polyvinyl alcohol fiber, polyamide fiber.
ポリエステル系繊維、芳香族ポリアミド系ａ＆維。Polyester fiber, aromatic polyamide a&fiber.
ガラス繊維等の短繊維が用いられる。繊維径は０．５〜
２０デニーＩｖ（以下、デニールをｄと記す）の細いも
のが好擾しぐ、繊維長さは１〜１５ｍｍ程度が好ましく
、１５ｍｇを超えると混合加工、押出し加工が内軸とな
る。また、短繊維の配合量は、高分子材料の特性を失な
わずに押出し又は圧延できる程度の量であればよく。Short fibers such as glass fibers are used. Fiber diameter is 0.5~
A thin fiber of 20 denier Iv (hereinafter denier is referred to as d) works well, and the fiber length is preferably about 1 to 15 mm, and if it exceeds 15 mg, mixing processing and extrusion processing become difficult. Further, the amount of short fibers to be blended may be such that it can be extruded or rolled without losing the properties of the polymer material.
通常高分子材料の全量の２〜５０重量％が好ましい。Usually 2 to 50% by weight of the total amount of polymeric material is preferred.
また１本発明の高圧ホースは、用途、仕様等によっても
多少異なるが、内管の肉厚および内管の外周に設ける短
繊維を配合した中間層の肉厚は、柔軟性、金具による締
付は性、耐圧性等を考慮して、各々ｌ〜３ｍ屑、 ０．
３〜１．０＊ｊ１ｇ程度に形成され、さらＫかかる中間
層の硬さは。In addition, the high-pressure hose of the present invention differs somewhat depending on the application, specifications, etc., but the thickness of the inner tube and the thickness of the intermediate layer containing short fibers provided on the outer periphery of the inner tube are determined by the flexibility, tightening by the metal fittings, etc. Taking into consideration the strength, pressure resistance, etc., each of 1 to 3 m of scrap, 0.
The hardness of the intermediate layer is approximately 3 to 1.0*j1g, and is approximately K.
特に限定するものではないが１通常６０以上。Although not particularly limited, 1 is usually 60 or more.
好ましくは７０〜９０の硬さに形成される。It is preferably formed to have a hardness of 70 to 90.
尚、上記の各高分子材料中には、カーボンブラック、白
色フィラー、加工助剤、軟化剤、可塑剤、表化防止剤、
加硫促進剤、加硫剤等が必要に応じ適宜選択して用いら
れる。In addition, each of the above polymer materials contains carbon black, white filler, processing aid, softener, plasticizer, anti-surface agent,
A vulcanization accelerator, a vulcanizing agent, etc. are appropriately selected and used as required.
（発明の効果）
以上の構成とせる本発明によれば、内管を硬度６０〜７
５の高分子材料で形成したちので。(Effects of the Invention) According to the present invention configured as above, the inner tube has a hardness of 60 to 7.
It is made of 5 polymeric materials.
内管の耐熱硬化寿命全大幅に向上することができ、長期
にわたって硬化クラック等の発生のない柔軟性が維持さ
れると共に、該内管の外周とワイヤ補強層との間に短繊
維を配合した中間層を設けたので、イノパルス耐圧性に
優れる。また１本発明によれば、内管の耐熱硬化寿命が
優れ、金具連結部における内管クラックの発生がなくな
り、シール性が向上するし、さらに、ワイヤスパイフル
補強層ヲ有する高圧ホースにおいては、従来のようにワ
イヤの内管への喰い込み防止用の糸編組または布層を設
ける必要がなく、製造が簡略化され且つコヌトも安価に
なるなどの効果をも奏する。The heat-resistant curing life of the inner tube can be greatly improved, and flexibility without curing cracks can be maintained over a long period of time. Since the intermediate layer is provided, Innopulse has excellent pressure resistance. In addition, according to the present invention, the heat-resistant hardening life of the inner tube is excellent, the occurrence of inner tube cracks at the fitting connection part is eliminated, and the sealing performance is improved. It is not necessary to provide a thread braid or a cloth layer to prevent the wire from biting into the inner tube as in the conventional method, and the manufacturing process is simplified and the conut is also inexpensive.
（実施例） 以下に１本発明の実施例を示しその優位性を実証する。(Example) An example of the present invention will be shown below to demonstrate its superiority.
第１図に示す如きワイヤブレード補強層を有するホース
（但し、実施例においては糸編組層はなし）ｔ−公知の
手法に基づいて製造した。A hose having a wire braid reinforcing layer as shown in FIG. 1 (however, there was no yarn braided layer in the examples) was manufactured based on a known method.
かかるホースの製造においては、内管（Ａ）の外周と補
強層（１）との間に設けた中間層（Ｂ）には、ポリアミ
ド製短繊維（径５ｄ、長さ３ ｍ ｍ。In manufacturing such a hose, the intermediate layer (B) provided between the outer periphery of the inner tube (A) and the reinforcing layer (1) is made of short polyamide fibers (diameter 5 d, length 3 mm).
、比重１．１４）を配合した。また、補強層（１）、
（２）、 （３）、 （４）は、グラスメッキワイヤ素
線径ｏ、ｓｏ＊ｍφのワイヤを打込数８０本、密度９２
％にて編組して形成した。また、ホースの内径は１９１
１１１ｍ内管側から第２層目、第３１１１目。, specific gravity 1.14). In addition, the reinforcing layer (1),
(2), (3), and (4) are glass-plated wire wires with diameter o and so*mφ, the number of implants is 80, and the density is 92.
It was formed by braiding at %. Also, the inner diameter of the hose is 191
111m 2nd layer from the inner tube side, 3111th.
＠４層目の各々の層間には、硬さ６５の高分子材料から
なる肉厚Ｑ、 ３ ｙｍ ｍの中間層（１１）、 （１
２）。Between each of the fourth layers, there are intermediate layers (11), (11) and (1
2).
（１３）を配設し、さらに外管（ｄ）としては、硬さ６
５、肉厚１．５ ｍ ｍの高分子材料を用いた。かかる
ホースの構成の特徴点のみを表−１に示す。(13), and the outer tube (d) has a hardness of 6
5. A polymer material with a wall thickness of 1.5 mm was used. Table 1 shows only the features of the configuration of such a hose.
一方、第２図に示す如きワイヤブレード補強層を有する
ホース（但し実施例及び比較例４においては内管と補強
層間に中間層を設けた）を公知の手法に基づいて製造し
た。中間層（Ｂ）にには、ポリエステル製短繊ｉＩ（径
４ｄ、長さ３ｍｍ、比重１．３８）を配合した。また、
補強層（５）は、素線径０．３２ｍｔｌｌφのプラスメ
ッキワイヤを６本引揃え、打込数２４．密度９４％にて
編組して形成した。また、ホースの内径は９ｍｍ、外管
（ｄ）としては、硬さ６５．肉厚１．５ｍｍの高分子材
料を用いた。かかるホースの構成の特徴点のみを表−２
に示す。On the other hand, a hose having a wire braid reinforcing layer as shown in FIG. 2 (however, in Example and Comparative Example 4, an intermediate layer was provided between the inner tube and the reinforcing layer) was manufactured based on a known method. Polyester short fibers iI (diameter 4d, length 3mm, specific gravity 1.38) were blended into the intermediate layer (B). Also,
The reinforcing layer (5) is made of six plus plated wires with a wire diameter of 0.32 mtllφ, and the number of implants is 24. It was formed by braiding at a density of 94%. The inner diameter of the hose is 9 mm, and the outer tube (d) has a hardness of 65 mm. A polymer material with a wall thickness of 1.5 mm was used. Table 2 shows only the features of the configuration of such a hose.
Shown below.
以上の構成とせる各ホースについて、各種ホース性能を
評価した。それらの結果を表−１及び表−２に各々併記
した。尚、各種ホース性能の評価方法は次の通りである
。Various hose performances were evaluated for each hose configured as described above. The results are also listed in Table-1 and Table-2, respectively. The evaluation method for various hose performances is as follows.
１３５°Ｃの作動油（鉱物油）をホースアセンブリ内に
４８０時間循環させ、その後ホースを折曲げ、内管の硬
化クラックの発生状況ｔ−調べた。表中では、異常なし
を○印。Hydraulic oil (mineral oil) at 135°C was circulated in the hose assembly for 480 hours, and then the hose was bent to examine the occurrence of hardening cracks in the inner tube. In the table, mark ○ if there is no abnormality.
硬化クラック発生をＸ印で示した。The occurrence of curing cracks is indicated by an X mark.
油温を１２０℃とする以外、ＪＩＳＢ−１３３６０衝撃
圧力試験に準拠して行なった。The impact pressure test was conducted in accordance with JISB-13360 except that the oil temperature was 120°C.
ホースは、オリジナル品（Ｐ！！老化なし）と熱老化品
（１３５°ＣＸ ２４０時間熱老化）の２種について、
インパルス全チャージし耐久性を調べた。表中では、１
００万回で異常なしをＱ印、内管のワイヤ目抜けもしく
は硬化クラック発生（油洩れ）をＸ印で示した。There are two types of hoses: the original product (P!! No aging) and the heat aged product (heat aged at 135°C for 240 hours).
I fully charged the Impulse and checked its durability. In the table, 1
No abnormality after 1,000,000 cycles is indicated by a Q mark, and an X mark indicates that a wire is missing in the inner tube or hardening cracks have occurred (oil leakage).
ホースアセンブリ内に作動油を封入し、１２０°ＣＸ３
３６時間熱老化後、耐圧試験（ＪＩＳＢ−８３６９準拠
）を行なった串表中では、１０００’ｆｒ／−加圧で異
常なしをＯ印、１０００’？’／−未満で油洩れ発生を
Ｘ印で示した。Hydraulic oil is sealed in the hose assembly and heated to 120°C
After heat aging for 36 hours, a pressure test (according to JISB-8369) was carried out on the skewer table, where no abnormality was found under 1000'fr/- pressure, and 1000'? The occurrence of oil leakage below '/- is indicated by an X mark.
スパイフル補強ホースの場合は金具による締率５０％、
グレード補強ホースの場合は締率５５％にて各々ホース
をアセンブリし。In the case of Spyful reinforced hose, the tightening rate by metal fittings is 50%,
For grade reinforced hoses, assemble each hose at a tightening rate of 55%.
作動油を封入し、１２０°ＣＸ７０時間熱老化後のバル
ジの発生状況を調べた。表中では、バルジ発生なしを○
印、バルジ発生ありをＸ印で示した。Hydraulic oil was sealed and the occurrence of bulges after heat aging at 120°C for 70 hours was investigated. In the table, ○ indicates no bulge.
The presence of bulges is indicated by an X mark.
注２）内管の外周に糸編組層あり
表−２
以との結果から明らかなように、実施例のものは、耐熱
硬化寿命に優れ、長期にわたって柔軟性ｔｍ持し、その
結果、インパルス耐圧性にも優れる。Note 2) There is a yarn braided layer on the outer periphery of the inner tube.As is clear from the results shown in Table 2, the examples have excellent heat-resistant hardening life, maintain flexibility tm over a long period of time, and as a result, have a high impulse pressure resistance. It is also excellent in sex.
第１図および第２図は、各々本発明の高圧ホースの一例
を示す正面視説明図であり、第３図および第４図は、各
々従来の高圧ホースの一例を示す正面視説明図である。
ａ・・・内管、 ｂ・・・糸編岨又は布層、 Ｃ・
・・中間層Ａ・・・内管（硬さ６０〜７５）、 Ｂ
・・・中間層（短礒維配合；樟念客愈：＝立）。
Ｌ２４４・・・ワイヤスパイラル補強層。
５・・・ワイヤグレード補強層、ＬＬ１２．１３・・・
中間層。
ｄ・・・外管
特許出順人FIGS. 1 and 2 are explanatory front views showing an example of a high pressure hose of the present invention, and FIGS. 3 and 4 are explanatory front views showing an example of a conventional high pressure hose, respectively. . a... Inner tube, b... Thread knitting cap or cloth layer, C.
...Middle layer A...Inner tube (hardness 60-75), B
...Middle layer (contains short fibrous fibers; Shunen Customer Yu: = standing). L244...Wire spiral reinforcement layer. 5... Wire grade reinforcement layer, LL12.13...
middle class. d... Outer tube patent applicant
Claims (1)
スにおいて、 前記内管をＪＩＳ−Ａ硬さ６０〜７５の高分子材料で形
成すると共に、該内管の外周とワイヤ補強層との間に、
短繊維を配合した高分子材料からなる中間層を設けたこ
とを特徴とする高圧ホース。[Scope of Claims] A high-pressure hose including a wire reinforcing layer between an inner tube and an outer tube, wherein the inner tube is made of a polymeric material with a JIS-A hardness of 60 to 75, and the inner tube between the outer periphery and the wire reinforcement layer,
A high-pressure hose characterized by having an intermediate layer made of a polymeric material containing short fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3226685A JPS61192988A (en) | 1985-02-20 | 1985-02-20 | High-pressure hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3226685A JPS61192988A (en) | 1985-02-20 | 1985-02-20 | High-pressure hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61192988A true JPS61192988A (en) | 1986-08-27 |
Family
ID=12354200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3226685A Pending JPS61192988A (en) | 1985-02-20 | 1985-02-20 | High-pressure hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61192988A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01193492A (en) * | 1988-01-25 | 1989-08-03 | Honda Motor Co Ltd | Water hose material |
| WO2022123906A1 (en) * | 2020-12-11 | 2022-06-16 | 株式会社ブリヂストン | Multilayer hose |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997381A (en) * | 1982-11-24 | 1984-06-05 | 横浜ゴム株式会社 | High-pressure hose |
-
1985
- 1985-02-20 JP JP3226685A patent/JPS61192988A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5997381A (en) * | 1982-11-24 | 1984-06-05 | 横浜ゴム株式会社 | High-pressure hose |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01193492A (en) * | 1988-01-25 | 1989-08-03 | Honda Motor Co Ltd | Water hose material |
| WO2022123906A1 (en) * | 2020-12-11 | 2022-06-16 | 株式会社ブリヂストン | Multilayer hose |
| EP4261449A4 (en) * | 2020-12-11 | 2024-05-29 | Bridgestone Corporation | Multilayer hose |
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