JPS5997379A - Water hose for automobile - Google Patents
Water hose for automobileInfo
- Publication number
- JPS5997379A JPS5997379A JP20526582A JP20526582A JPS5997379A JP S5997379 A JPS5997379 A JP S5997379A JP 20526582 A JP20526582 A JP 20526582A JP 20526582 A JP20526582 A JP 20526582A JP S5997379 A JPS5997379 A JP S5997379A
- Authority
- JP
- Japan
- Prior art keywords
- hose
- yarn
- thread
- rubber
- threads
- 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
Landscapes
- Laminated Bodies (AREA)
- 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】
ースなどに用いる自動車用ウォーターホースに関し.畏
寿命化とコスト低減の両者を一挙に解決した自動車用ウ
ォーターホースを提供することを目的とする。[Detailed Description of the Invention] This invention relates to a water hose for automobiles used for cars, etc. The purpose of the present invention is to provide a water hose for automobiles that solves both problems of life extension and cost reduction at once.
従来.自動車用ウォーターホースとしては。Conventional. As a water hose for automobiles.
自動車のエンジン部を冷却するためにエンジン部とラジ
ェータ一部との間を連結し,冷却水を循環する目的に使
用するラジェーターホースやエンジン部とファンヒータ
一部との間を連結し冷却水を循環する目的に使用するヒ
ーターホースなどがあり,耐熱性,耐不凍液性(耐冷却
水性)及び耐屈曲性(配管上比較的短かく且つ屈曲した
状態でニップルにクフンプ締めされて取付けられるため
。)などの特性が要求され,そのため材料面,構造面で
種々の検討が行なわれている。A radiator hose is used to connect the engine part and part of the radiator to cool the engine part of a car, and is used to circulate cooling water, and a radiator hose is used to connect the engine part and part of the fan heater to circulate the cooling water. There are heater hoses used for circulation purposes, and they are heat resistant, antifreeze resistant (cooling water resistant), and bend resistant (because they are relatively short and bent on the piping and are attached to nipples by being tightened). These characteristics are required, and therefore various studies are being conducted from the material and structural aspects.
その結果として, @@性,耐不凍液性及び耐候性Ki
れるエチレン−プロピレン−ジエンゴム(以下EPDM
と記す)配合物にて.ホー・ス内,外管を製し,その中
間にレーヨン糸にてブレード編組された補強層を配した
構成のホースが主流を占めている。As a result, @@ property, antifreeze resistance and weather resistance Ki
Ethylene-propylene-diene rubber (hereinafter referred to as EPDM)
(denoted as ) in the formulation. Most hoses have an inner and outer tube, and a reinforcing layer made of braided rayon yarn is placed in the middle.
しかしながら、最近の自動車業界の低燃費化対策,長寿
命化対策などに伴ない.従来にれなかった新たな問題が
発生しつつある。即ち,低燃費化に対しては車体の小型
化が図られ、その結果、エンジンルームのスペースが小
すくなりエンジンルームの温度上昇を惹起1し、しかも
。However, with the recent efforts in the automobile industry to improve fuel efficiency and extend lifespan. New problems that were not possible before are emerging. That is, in order to improve fuel efficiency, the vehicle body is made smaller, and as a result, the space in the engine room becomes smaller, causing an increase in the temperature of the engine room.
スペースの関係でラジェーターホースやヒーターホース
もエンジン本体に近接して取付けられているため、エン
ジン本体からの輻射熱によるゴムや補強糸の乾熱老化、
あるいは、不凍液のゴム中への浸透による補強糸の湿熱
老化が促進され、さらに、ホースと接続パイプのフラン
ツ。Due to space constraints, the radiator hose and heater hose are also installed close to the engine body, so radiant heat from the engine body can cause dry heat aging of the rubber and reinforcing threads.
Alternatively, moist heat aging of the reinforcing threads due to the penetration of antifreeze into the rubber is accelerated, and furthermore, the flange of hoses and connecting pipes.
締連結部にはヒーターパルプの開閉時に発生する最大5
〜61のくり返し水圧衝撃が負荷され連結部においてホ
ースが径方向に脈動運動をうけ、その結果、補強糸に応
力集中が起こり、糸抜けや糸切れを惹起し、内、外管の
ゴム層に応力集中が起こり、ホースが破裂するという実
用上重大な問題が生じつつある。又、前記連結部にはエ
ンジンなどからの加振振動が加わるだめ前記ホース脈動
運動ともあいまって、補強糸同志のこすれ摩耗による糸
切れが促進され、これが前記ホース破裂を助長している
ことも判明しつつある。At the fastening joint, there is a maximum of 5
- 61 repeated hydraulic shocks are applied and the hose undergoes radial pulsating motion at the joint, resulting in stress concentration on the reinforcing threads, causing threads to come out or break, and damage the rubber layers of the inner and outer tubes. Stress concentrations occur and hoses burst, which is becoming a serious problem in practice. In addition, it has been found that because vibrations from an engine or the like are applied to the connecting portion, combined with the pulsating motion of the hose, thread breakage due to frictional wear between reinforcing threads is promoted, and this promotes the hose rupture. It is being done.
以上、このような状況の中で、外国では車検制度がない
国もあり、一方日本国内では最近。Under these circumstances, some foreign countries do not have a vehicle inspection system, while in Japan there is a recent one.
車検制度の見直しく車検期間の延長など)の動きがある
ことなどから、ホースをはじめ各相1自動車部品の長寿
命化が課題となっている。As there are moves to revise the vehicle inspection system and extend the vehicle inspection period, extending the lifespan of each phase 1 auto parts, including hoses, has become an issue.
以上の事情からみて、従来のウォーターホース(レーヨ
ン糸によるブレード編組補強層を有する構成)では、前
記勢力化(乾熱劣化卦よび湿熱劣化)、水圧衝撃及び加
振振動などがあいまって、レーヨン糸の強力低下による
糸切れが発生しホース破裂が起こり、このためホースの
長寿命化は到底図れ得す、さらにブレード編組では編組
速度に制約があり1作業効率が豊くコスト面でも不利で
あるという間鮪がある。In view of the above circumstances, in the conventional water hose (configured with a braided reinforcing layer made of rayon yarn), the above-mentioned forces (dry heat deterioration and wet heat deterioration), hydraulic shock, excitation vibration, etc. are combined, and the rayon yarn Thread breakage occurs due to the decrease in strength, which causes the hose to rupture.For this reason, it is impossible to extend the life of the hose.Furthermore, with braided braiding, there is a restriction on the braiding speed, which is disadvantageous in terms of work efficiency and cost. There is tuna.
尚、前記レーヨン糸の強力低下の問題は、レーヨン糸の
糸径や!Jiii組打込数全打込数ればある程度長寿命
化への改善はできようが、それに郵ない幾多の技術的問
題をも解決しなければならず、又、コストアップにもな
り到底実用化され得るものではない。In addition, the problem of the strength reduction of the rayon thread is due to the thread diameter of the rayon thread! Although it would be possible to improve the lifespan to some extent by increasing the total number of strokes in Jiii, it would require solving numerous technical problems, and it would also increase costs, making it impossible to put it into practical use. It is not something that can be done.
本発明は以上の事情に鑑みて発明されたものであって、
長寿命化に対してはぜ強層の補強糸として、耐熱性、耐
不凍液性、耐候性及び耐摩耗性に優れるポリアミド製フ
ィラメント撚糸を用い、コストに対しては作業効率に優
れ連続生産が可能なスパイフル編組を用いれば、前記従
来の課題を解決することができると考えるのは当業者で
あれば容易に創刊しうる所であり1本発明者らは、この
考えをも含めて神々鋭意検討を重ねた結果、以下に述べ
る種々の問題点を見出した。The present invention was invented in view of the above circumstances, and
To extend the service life, polyamide filament yarn, which has excellent heat resistance, antifreeze resistance, weather resistance, and abrasion resistance, is used as the reinforcing yarn for the seam reinforcement layer, and it is cost effective and allows for continuous production. A person skilled in the art would easily believe that the above-mentioned conventional problems could be solved by using a spyful braid. As a result of repeated efforts, we discovered various problems as described below.
(1)ポリアミド製フィラメント撚糸とE P D M
配合物〔一般に接着がしにくい。〕との接着が劣る。(1) Polyamide filament twisted yarn and E PDM
Compounds [Generally difficult to adhere. ] Poor adhesion.
(2) ポリアミド製フィラメント撚糸とDPI)M
配合物との接着向上のため、ポリアミド繊維ポリエステ
ル繊維などの合成繊維に通常適用スルルFL(レゾルシ
ン−ホルマリン−ラテックス溶液)ディップ処理を施す
と、接着性は向上するがRFL溶液中のレゾルシンやホ
ルマリンなどにより糸が劣化を受け(前記乾熱及び湿熱
により経時的な劣化を受けるだめ)強力低下が起こる。(2) Polyamide filament twist yarn and DPI)M
In order to improve adhesion with compounds, synthetic fibers such as polyamide fibers and polyester fibers are treated with Surul FL (resorcinol-formalin-latex solution) dip treatment, which improves adhesion, but the resorcinol, formalin, etc. in the RFL solution improve the adhesion. This causes the yarn to deteriorate (because it is subject to deterioration over time due to the dry heat and wet heat), resulting in a decrease in strength.
又、aFL処理は糸を硬化させる傾向が大で、しかも使
用中に熱覆歴を受けるとその傾向暢さらに促進されるた
め前記クフンデ締連結部でのくり返し水圧衝撃によるホ
ースの脈動運動により、糸に応力集中がかかり、@記強
力低下ともあいまって糸切れが起こり、その結果、ゴム
層が内圧に耐えきれなくなり破裂することになり、長寿
命化が図れない。In addition, aFL treatment has a strong tendency to harden the yarn, and this tendency is further accelerated when subjected to a thermal history during use. Stress concentration is applied to the rubber layer, which causes thread breakage along with a decrease in strength.As a result, the rubber layer cannot withstand the internal pressure and ruptures, making it impossible to achieve a long service life.
(3)さらに、几FL処理直後の糸は粘着性を有する傾
向があり1編組時に編組機の糸ガイドとの摩擦抵抗が大
きくなり糸にテンションが負荷され、その結果、ホース
本体が変形するため編組が乱れてしまう。これを解決す
る手段としては、実際には編組速度を遅くする°などの
手段がとられており、加工性が悪く作業効率も低下しコ
スト面でも不利となる。(3) Furthermore, the yarn immediately after the FL treatment tends to be sticky, and during one braiding, the frictional resistance with the yarn guide of the braiding machine becomes large and tension is applied to the yarn, resulting in deformation of the hose body. The braid becomes disordered. In order to solve this problem, measures such as slowing down the braiding speed have actually been taken, which results in poor workability, reduced work efficiency, and disadvantages in terms of cost.
(4)一方、スパイク)v編組はその編組構造上。(4) On the other hand, spike) V braid is due to its braided structure.
グレード編組と比較して糸同志のゆすれ摩耗は少ないが
、ホース本体に編組鵞されたあと糸のバッグが生じやす
いこと、又、ホース製品として使用時には糸をある程度
拘束する手段を構じないと、糸の動きの自由度が大きい
ため糸同志あるいは糸とゴムとの摩擦抵抗(糸がホース
から引抜ける方向に作用する剪断力などの力)が小さく
、前記くり返し水圧衝撃や加振振動などを受けたときに
糸抜けが起き易くなり、結局の所ホース破裂に至るとい
う不具合がある。(クフンプによる締付力が小さいとこ
の傾向は顕著になる。)
(5)ポリアミド製繊維糸1例えばナイロン6.6繊維
は耐摩耗性に優れているが、前記(2)および(4)の
理由により、長寿命化を図るには前記(4)に記載する
如く、糸の切きをある程度拘束するなどの手段を構じな
いと、耐摩耗性の点でも問題がオる。Compared to grade braiding, there is less wear and tear between the threads, but it does tend to cause bags of threads after being braided into the hose body, and when used as a hose product, it is necessary to take measures to restrain the threads to some extent. , because the degree of freedom of movement of the threads is large, the frictional resistance between the threads or between the threads and the rubber (forces such as shearing force that act in the direction in which the threads are pulled out from the hose) is small, and the repeated water pressure shocks and excitation vibrations mentioned above are small. There is a problem in that the thread tends to come off when the hose is received, which eventually leads to the hose bursting. (This tendency becomes more pronounced when the tightening force of the Kufunpu is small.) (5) Polyamide fiber yarn 1 For example, nylon 6.6 fiber has excellent abrasion resistance, but the above (2) and (4) For this reason, in order to extend the service life, as described in (4) above, unless measures such as restricting thread cutting to some extent are taken, problems will arise in terms of wear resistance.
以上の知見に基づいて1本発明者らはさらに鋭意検討を
重ねた結果、長寿命化とコストの両者を満足する自動車
用ウォーターホースを提供するために、ウォーターホー
スと接続パイプとのクフング締連結部での前記くり返し
水圧衝撃エンジン等からの加振振動あるいけ編組などに
起因する糸切れや糸抜けを防止すれば、ホース破裂を解
消することができ、そのだめには、ポリアミド製繊維糸
の動きをある程度拘束し、糸の劣化を防止することが有
効であるとの考えに基づき、EPI)M配合物にて構成
した内管の外面に、ポリアミド製フィラメント撚糸を管
の軸方向に一定角度を以って交叉してスパイラ/1/編
組して補強層を形成せしめ、さらに該補強層にゴム糸接
着剤を含浸被覆せしめて該補強層全埋設せるゴム糸接着
剤層を形成せしめ、さらに該ゴム糸接着剤層の外側にE
PDM配合物にて構成した外管を配[7て一体化せしめ
て加硫接着してなる構成とすることにより、長寿命化が
図れ且つコスト間Mをも解決できることを見出し。Based on the above findings, the present inventors conducted further intensive studies, and in order to provide an automobile water hose that satisfies both long life and cost reduction, the present inventors determined that the water hose and the connecting pipe should be connected by fastening. Hose rupture can be prevented by preventing thread breakage and thread pull-out caused by vibrations or braiding caused by repeated hydraulic impact engines, etc. Based on the idea that it is effective to restrict the movement to a certain extent and prevent yarn deterioration, polyamide filament twisted yarn is placed on the outer surface of the inner tube made of EPI)M compound at a certain angle in the axial direction of the tube. The reinforcing layer is then impregnated with a rubber thread adhesive to form a rubber thread adhesive layer in which the entire reinforcing layer is embedded, and E on the outside of the rubber thread adhesive layer
It has been discovered that by integrating an outer tube made of a PDM compound and vulcanizing and adhering it, it is possible to extend the life of the tube and also solve the cost problem.
本発明を完成するに芋った。It was time to complete the invention.
以下本発明の詳細な説明する。The present invention will be explained in detail below.
本発明における内管及び外管を構成するEPDM配合物
としては、EPDMに加硫剤、加硫促進剤、補強剤、充
填剤、軟化剤、加工助剤。The EPDM compound constituting the inner tube and outer tube in the present invention includes EPDM, a vulcanizing agent, a vulcanization accelerator, a reinforcing agent, a filler, a softening agent, and a processing aid.
老化防止剤など通常用いられる配合薬品を含有するEP
DM配合物が用いられる。EP containing commonly used compounded chemicals such as anti-aging agents
A DM formulation is used.
又1本発明における補強層としては、ポリアミド製フィ
ラメント撚糸にてスパイフル編組した補強層が用いられ
る。ポリアミド製フィラメント撚糸としては、耐熱性と
耐摩耗性の点でナイロン6.6が好適に用いられる。又
、糸組織としては、スパン糸よりもフィラメント撚糸の
方が2強力及びコストの点で好適である。Further, as the reinforcing layer in the present invention, a reinforcing layer spiffle-braided with polyamide filament twists is used. As the polyamide filament twist, nylon 6.6 is preferably used in terms of heat resistance and abrasion resistance. Further, as for the yarn structure, filament twisted yarn is more suitable than spun yarn in terms of strength and cost.
又、フィラメント撚糸の糸径としては、50〜300μ
のものが用いられる。さらに、ポリアミド製フィラメン
ト撚糸にはRFL処理などの処理は施さず(几FL処理
による不具合は前記説明済)、単に湿熱処理を施すのみ
でよい。In addition, the diameter of the filament twisted yarn is 50 to 300μ.
are used. Furthermore, the polyamide filament twisted yarns may not be subjected to any treatment such as RFL treatment (the problems caused by the FL treatment have been explained above), and may simply be subjected to moist heat treatment.
この湿熱処理は糸の永久伸びを除去するためにで10分
〜60分蒸気雰囲気中で行なわれ、テンションを負荷す
るか否か、あるいはテンションを負荷する場合にはその
負荷率をどの4程度にするかは必要に応じ選択すればよ
い。又、ポリアミド製フィラメント撚糸は管の軸方向に
一定角度を以って交叉してスパイクIし編組され、その
編組角は通常静止角約110°が用いられるが耐圧性と
可“鵡性を考唱して必要に応じ変更することもできる。This moist heat treatment is carried out in a steam atmosphere for 10 to 60 minutes to remove permanent elongation of the yarn. You can choose whether to do so or not, depending on your needs. In addition, polyamide filament strands are braided with spikes that intersect at a certain angle in the axial direction of the tube, and the braiding angle is usually about 110 degrees at rest angle, but considering pressure resistance and flexibility. You can also change it as needed.
又1本発明に2けるゴム系接着剤としては。In addition, as the rubber adhesive according to 1.2 of the present invention.
クロロプレンゴム、ハイパロンゴム、4素化ゴムなどを
主成分とする塩化ゴム系接着剤、あるいは内、外管に用
いるE P D M配合物と同種又は類似の配合物溶液
(共糊)、あるいはこれらの混合接着剤が用いられる、
又、このゴム系接着剤は補強層に施すことにより、ポリ
アミド製フィラメント撚糸を含浸被覆し、補強層を被覆
埋設せるゴム系接着剤層が形成される。Chlorinated rubber adhesives whose main components are chloroprene rubber, Hypalon rubber, tetracomponent rubber, etc., or compound solutions (co-glues) that are the same or similar to the E PDM compound used for the inner and outer pipes, or these. A mixed adhesive of
Further, by applying this rubber adhesive to the reinforcing layer, a rubber adhesive layer is formed in which the polyamide filament twist is impregnated and coated, and the reinforcing layer is covered and embedded.
ゴム系接着剤層は1編組加工後の糸のバラクを防止し、
実使用下においては糸の動きをほどよ〈拘束し、lI記
くり返し水圧衝撃によるホース径方向のj駆動運動に対
しては、糸への応力集中を緩和し、さらに糸と糸′1と
のこすれ摩耗全防止し、又加振振動に対しても、交叉し
たスパイク/L’ 編組の内糸と外糸とのこすれ摩耗の
促進を防止するなどの効果を奏せしめる。The rubber adhesive layer prevents the yarn from becoming loose after the first braiding process.
In actual use, the movement of the thread is loosened and restrained, and stress concentration on the thread is alleviated against the drive movement in the radial direction of the hose due to repeated hydraulic shocks, and the friction between the thread and the thread is reduced. It completely prevents abrasion, and also has the effect of preventing acceleration of friction wear between the inner thread and outer thread of the crossed spike/L' braid against vibration.
そのため補強層を完全に被覆埋設する程度のゴム系接着
剤層の厚みが必要であり1通常、その岐借厚みは10μ
〜100μが好ましい。被覆厚みが10μ以下では前記
効果は小さく。Therefore, the thickness of the rubber adhesive layer is required to completely cover the reinforcing layer.1 Usually, the thickness of the rubber adhesive layer is 10 μm.
~100μ is preferred. The above effect is small when the coating thickness is 10 μm or less.
100 tt以上では加工上、コスト上の点で不利であ
る。A thickness of 100 tt or more is disadvantageous in terms of processing and cost.
又、ゴム系接着剤の性状は1作業性などの点から、11
′¥1常固形分5〜30重量%、粘度50〜2000セ
ンチポイズのものが好倣に用いられる@又1本発明にお
ける一体加硫接着は、長尺巻取成形あるいは短尺成形し
たものを、加硫缶にて蒸気加硫して行なわれる。In addition, the properties of rubber adhesives are 11 from the viewpoint of workability, etc.
'¥1 One with a normal solid content of 5 to 30% by weight and a viscosity of 50 to 2000 centipoise is preferably used. It is performed by steam vulcanization in a sulfur can.
次に1本発明を比較例を引用し、実施例に基づいてに祝
する。Next, the present invention will be described based on Examples with reference to Comparative Examples.
以下の比1咬例及び実施例においては、Ell)M配合
物をまず押出機にて内管を押出し、その後表−1に示す
如く条件にて各繊維糸を編組しく実施例においてはさら
にゴム系接着剤を適用する)、その外側に内管と同一の
EPDM配合物を外管として押出し?jJ覆した。それ
を長尺巻取成形あるいは短尺成形し、150”CX30
分茎
の癲気加硫を行ない、仕様内径16問、肉厚4纏のウォ
ーターホースを製した。そして、これらのホースを用い
各種性峠評価を行なった。その結果を表−2に示す。In the ratio 1 bite examples and examples below, the inner tube of the Ell)M compound was first extruded using an extruder, and then each fiber thread was braided under the conditions shown in Table 1. system adhesive), and extrude the same EPDM compound as the inner tube on the outside as the outer tube? jJ overturned. It is rolled up into a long length or formed into a short length to form a 150”CX30
The stems were air-vulcanized to produce water hoses with 16 internal diameters and 4 wall thicknesses. Then, various characteristics were evaluated using these hoses. The results are shown in Table-2.
注7)接着性
ホースの外管を一部剥ぎ取り補強糸を取出し、オースグ
ラフにて補強糸をほぼホース径線
接数方向に引抜き、引抜力を測定した。引抜速度は25
0諸/分。Note 7) Part of the outer tube of the adhesive hose was peeled off to remove the reinforcing thread, and the reinforcing thread was pulled out using an Ausgraph in the direction tangent to the hose diameter, and the pulling force was measured. The withdrawal speed is 25
0 pieces/minute.
注8)耐熱性
ホース中に水/エチレングリコール:50150(容積
比)の組成の不凍液を封入し、125℃雰囲気中にて所
定時間老化させた後、ホースに内圧を負荷しその破裂圧
を測定した。テ゛−タはブランクに対するホース破裂圧
保持率r%〕 で示した。Note 8) Antifreeze with a composition of water/ethylene glycol: 50150 (volume ratio) is sealed in a heat-resistant hose, and after aging in an atmosphere of 125°C for a specified period of time, internal pressure is applied to the hose and its burst pressure is measured. did. The data was expressed as the hose bursting pressure retention rate (r%) relative to the blank.
注9)耐屈曲性
長さ200■のホースの両端會接続パイプに連結し、水
/エチレングリコール= 5015 Q(容積比)の組
成の不凍液をホース中に封入して、125℃にて所定時
間老化させる。その後、封入液を抜取り、ホースの一端
を固定し他端を水平位置から下方へ35層くり返し可動
させ、これを常温にて200万回の屈曲試験を行なった
後、ホースに内圧を負荷しその破裂圧(常温)を測定し
た。データはブランクに対するホース破裂圧保持率〔%
〕で示した。尚、ホースと接続パイプの連結部はクラン
プ締め(締付ト?レク 15即・傭)されている。Note 9) Connect both ends of a hose with a bending resistance length of 200 cm to the connection pipe, fill the hose with antifreeze having a composition of water/ethylene glycol = 5015 Q (volume ratio), and hold it at 125°C for a specified period of time. age. After that, the sealed liquid was extracted, one end of the hose was fixed, and the other end was moved downward from a horizontal position 35 times repeatedly. After conducting a bending test 2 million times at room temperature, internal pressure was applied to the hose and the Bursting pressure (at room temperature) was measured. The data is the hose bursting pressure retention rate [%] relative to the blank.
]. In addition, the joint between the hose and the connecting pipe is tightened with a clamp (tightening torque 15).
注10)耐水圧衝撃性
第1図に示す如く1曲管ホースをクランプ締め(締付ト
ルク15に9・cm0但し実施例5は10即・備)にて
接続パイプにて接続し、水/エチレングリコ−ρ= ”
0150 (容積比)のM或の不凍液を循環させ、液
温95℃、雰囲気温冷常温(加温なし)1(て6回/分
のくり返し水圧哨撃を負荷させ、ホース端部からの糸抜
けの状9貝、ホース破裂の有無を調べた。Note 10) Water Pressure Impact Resistance As shown in Figure 1, connect one curved hose with a connecting pipe by tightening the clamp (tightening torque 15 to 9cm0, but in Example 5, prepare 10cm), and Ethylene glyco-ρ=”
0150 (volume ratio) M antifreeze solution was circulated, the liquid temperature was 95°C, the ambient temperature was cooled to room temperature (no heating), and hydraulic pressure was repeatedly applied 6 times/min. Nine shellfish were found to be missing and the presence of hose rupture was investigated.
循環液の液圧は7¥#とじた。データは糸抜は又はホー
ス破裂の起こる水圧衝撃回数で示した。(JA80
M2O3−76参考)以上の比較例及び実施例に示す如
く、比較例1は補強層全構成するレーヨン糸自身の熱劣
化(雰囲気中での転塾劣化及び内管’e ?Ij−透し
た不凍液にする湿熱劣化)による弾力低下が激しく。The fluid pressure of the circulating fluid was 7 yen #. Data are expressed as the number of hydraulic shocks that result in thread removal or hose rupture. (JA80
M2O3-76 reference) As shown in the above Comparative Examples and Examples, Comparative Example 1 shows thermal deterioration of the rayon yarn itself that constitutes the entire reinforcing layer (deterioration due to deterioration in the atmosphere and antifreeze liquid passing through the inner tube). The elasticity decreases significantly due to moisture and heat deterioration.
糸切れを卸こし充分な耐久性が得られない、(実用寿命
は約5年が限度)
又比I咬例には、補強層を構「戊するナイロンへ6フイ
ラメント撚糸にけRF L処理が施されているだめ、雰
囲気中の熱による糸硬化及び糸劣化が促進され、糸切れ
金起こし充分な耐久性が得られない。In addition, in cases where thread breakage occurs and sufficient durability cannot be obtained (practical life is limited to about 5 years), RF L treatment is applied to the 6-filament twisted nylon to form a reinforcing layer. The heat in the atmosphere accelerates yarn hardening and yarn deterioration, making it impossible to obtain sufficient durability when raising yarn scraps.
比較例3けナイロン6.6フイラメント撚糸ハR、F
L処すljなどの未硬化全惹起する処理は施していない
ので耐熱性、1附属曲性は良好であるが。Comparative example 3 strands of nylon 6.6 filament twisted yarn C, F
Since it is not subjected to any treatment that induces uncured conditions such as L treatment, it has good heat resistance and 1-attached bendability.
ナイロン6.6フイラメント撚糸の糸抜けに対する拘束
手段がないため、くり返し水圧斬撃により糸抜けが惹起
されホース破裂が発生する。Since there is no means to restrain the nylon 6.6 filament twisted yarn from coming off, repeated water pressure slashing causes the thread to come off, causing the hose to burst.
一方、実施例1〜4 においては、ナイロン6゜6フイ
ラメント撚糸は比較例3と同様ILFL処理などid施
していないので糸伸化はなく、該ナイロン6.6フイラ
メント撚糸はゴム糸接着剤層によって被覆されて糸がほ
どよく拘束されているので、糸抜けは抑制され、ホース
破裂には至らない。(実用寿命は比較例1の2倍以上で
ある。)
以上説明した如く1本発明の自動車用ウォーターホース
は補強層を構成するポリアミド製フィラメント撚糸には
、R,FL処岬などの処理は施していないので糸硬化及
び糸劣化は噌とんどなく、又、前記使用条件において、
糸抜けに対して問題があるヌパイラ/I/編組に対して
、該編組補強層を被覆するゴム系接着削−を用いた構成
としているだめ、ホースと接続パイプブとのクランプ締
連結部でのくり返し水圧衝撃によるホースの脈動運動や
エンジンなどからの加振振動に対して、糸の動き(ゴム
から糸が剪断力によって引抜けようとする動き)をj・
王どよく拘束し。On the other hand, in Examples 1 to 4, the nylon 6.6 filament twisted yarn was not subjected to ID such as ILFL treatment as in Comparative Example 3, so there was no yarn elongation, and the nylon 6.6 filament twisted yarn was coated with the rubber thread adhesive layer. Since the threads are properly restrained by the covering, the threads are prevented from coming off, and the hose does not burst. (The practical service life is more than twice that of Comparative Example 1.) As explained above, in the automobile water hose of the present invention, the polyamide filament strands constituting the reinforcing layer are not subjected to treatments such as R and FL treatment. There is almost no yarn hardening or yarn deterioration, and under the above usage conditions,
For Nupaira/I/braid, which has a problem with thread pull-out, the structure uses a rubber-based adhesive to cover the braid reinforcement layer, which prevents repeated clamping at the joint between the hose and the connecting pipe. The movement of the thread (the movement of the thread trying to pull out from the rubber due to shearing force) is
The king was restrained.
糸と糸及び糸とゴムとの摩擦抵抗を大きくし糸のこすれ
鮪耗切れを防止するとともに、 14層組糸へ応力集中
が起こらないようにするなどの効果を奏し、クランプに
よる締付力が多少剥い場合でも糸切れ、糸抜けがなくな
るだめホース破裂がなく、信頼性の高い長寿命化が図れ
るという効果がある。It increases the frictional resistance between threads and threads and rubber, prevents the threads from rubbing and breaking, and also prevents stress from concentrating on the 14-layer braided yarn, reducing the tightening force of the clamp. Even if there is some peeling, there will be no thread breakage or thread coming out, so there will be no hose rupture, and a highly reliable and long service life can be achieved.
又、ポリアミド製フィラメント(撚糸にはルFL処理な
どの処理を施していないので、糸自身が粘511′性を
有する傾向もなく1編組時の糸とfJi+1組機の糸ガ
イドとの11抵抗が小さく且つ糸送ホースが変形して真
円でなくなるため、編組が乱れる。)従って9編組速度
を速くすることが’iil能となり1作業効率が向上す
るので(連続生産が可能)、従来のレーヨン使用且プV
−ド編組の構成と比較して、約10〜20q6のコスト
低減が図れるという効果がある。In addition, since the polyamide filament (twisted yarn is not subjected to processing such as FL treatment), the yarn itself does not tend to have viscosity, and the resistance between the yarn during one braiding and the yarn guide of the fJi+1 braiding machine is (The yarn feed hose is deformed and becomes no longer a perfect circle, resulting in disordered braiding.) Therefore, it is possible to increase the braiding speed, improving work efficiency (continuous production is possible). Use and print V
This has the effect of reducing costs by about 10 to 20q6 compared to the structure of a -do braid.
以上の如く9本発明によれば、長寿命化とコスト低減の
両者を解決した自動車用ウォーターホースを提供するこ
とができ、その実用上の利益は甚大である。As described above, according to the present invention, it is possible to provide a water hose for an automobile that achieves both longevity and cost reduction, and its practical benefits are enormous.
第1図は本発明を説明するだめの耐水圧衝撃性試験の装
置概略を示す部分側面図である。
1・・・ホース、2・・・接続パイプ、3・・・フラン
グ4・・・循環液(不凍液)
特許出願人FIG. 1 is a partial side view schematically showing an apparatus for a hydraulic shock resistance test to explain the present invention. 1...Hose, 2...Connection pipe, 3...Flang 4...Circulating fluid (antifreeze) Patent applicant
Claims (1)
内管の外面に、ポリアミド製フィラメント然糸を内管の
軸方向に一定角度を以って交叉してスパイラ/L/綱組
【7で補強層を形成せしめ、さらに該補強層にゴム系接
着剤を含浸被覆だ外管を配して一体化し加硫接着してな
ることを特徴とする自動車用ウォーターホース。[Claims] On the outer surface of the inner tube made of an ethylene-propylene-diene rubber compound, polyamide filament threads are intersected at a certain angle in the axial direction of the inner tube to create a spiral/L/wire structure. [An automobile water hose characterized in that a reinforcing layer is formed in step 7, and an outer tube impregnated with a rubber adhesive is disposed on the reinforcing layer, which is then integrated and vulcanized and bonded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20526582A JPS5997379A (en) | 1982-11-22 | 1982-11-22 | Water hose for automobile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20526582A JPS5997379A (en) | 1982-11-22 | 1982-11-22 | Water hose for automobile |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5997379A true JPS5997379A (en) | 1984-06-05 |
JPH0156311B2 JPH0156311B2 (en) | 1989-11-29 |
Family
ID=16504115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20526582A Granted JPS5997379A (en) | 1982-11-22 | 1982-11-22 | Water hose for automobile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5997379A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61206888A (en) * | 1985-03-08 | 1986-09-13 | 豊田合成株式会社 | High-pressure rubber hose |
JPH0231095A (en) * | 1988-07-19 | 1990-02-01 | Yokohama Rubber Co Ltd:The | Hose |
JPH0356787A (en) * | 1989-07-25 | 1991-03-12 | Toyoda Gosei Co Ltd | Brake hose |
-
1982
- 1982-11-22 JP JP20526582A patent/JPS5997379A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61206888A (en) * | 1985-03-08 | 1986-09-13 | 豊田合成株式会社 | High-pressure rubber hose |
JPH0522112B2 (en) * | 1985-03-08 | 1993-03-26 | Toyoda Gosei Kk | |
JPH0231095A (en) * | 1988-07-19 | 1990-02-01 | Yokohama Rubber Co Ltd:The | Hose |
JPH0356787A (en) * | 1989-07-25 | 1991-03-12 | Toyoda Gosei Co Ltd | Brake hose |
Also Published As
Publication number | Publication date |
---|---|
JPH0156311B2 (en) | 1989-11-29 |
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