JPH0336025A - High-pressure rubber hose - Google Patents
High-pressure rubber hoseInfo
- Publication number
- JPH0336025A JPH0336025A JP17118389A JP17118389A JPH0336025A JP H0336025 A JPH0336025 A JP H0336025A JP 17118389 A JP17118389 A JP 17118389A JP 17118389 A JP17118389 A JP 17118389A JP H0336025 A JPH0336025 A JP H0336025A
- Authority
- JP
- Japan
- Prior art keywords
- rubber layer
- layer
- oil
- surface rubber
- 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.)
- Granted
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 229920006231 aramid fiber Polymers 0.000 claims abstract description 10
- 125000003118 aryl group Chemical group 0.000 claims abstract description 10
- 239000004760 aramid Substances 0.000 claims description 5
- 230000035515 penetration Effects 0.000 abstract description 7
- 238000009954 braiding Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Knitting Of Fabric (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、高圧ゴムホースに係わり、更に詳しくは油
の浸透を著しく低減させた高圧ゴムホースに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high-pressure rubber hose, and more particularly to a high-pressure rubber hose in which oil penetration is significantly reduced.
〔従来の技術］
従来、パワーステアリング等に使用されている高圧ゴム
ホースは、例えば第３図及び第４図に示すように、内面
ゴム層ｌと外面ゴム層２との間に補強層３が埋設されて
構成されており、この補強層３は、高圧ゴムホースの使
用圧力が１００ ｋｇＦ／ｄを越える場合には、硬鋼線
を編組したものが一般的に使用される。[Prior Art] Conventionally, a high-pressure rubber hose used for power steering etc. has a reinforcing layer 3 embedded between an inner rubber layer 1 and an outer rubber layer 2, as shown in FIGS. 3 and 4, for example. When the working pressure of the high-pressure rubber hose exceeds 100 kgF/d, the reinforcing layer 3 is generally made of braided hard steel wire.
ところで、パワーステアリング用等に使用されている油
は、低粘度の基油に高粘度の粘度調整油（動粘度指数向
上剤）を混ぜた混合油が一般的に使用されている。この
ような混合油を、上記のような従来の高圧ゴムホースに
使用した場合、内面ゴム層ｌが吸収した低粘度油を補強
層３の間隙Ｑを通って外面ゴム層２側へ浸透させ、外面
ゴム層２の表面より油を揮散させることから、長時間の
使用においては油の粘度が著しく上昇すると言う悪影響
があった。Incidentally, the oil used for power steering and the like is generally a mixed oil in which a low viscosity base oil is mixed with a high viscosity viscosity adjusting oil (dynamic viscosity index improver). When such a mixed oil is used in the conventional high-pressure rubber hose as described above, the low-viscosity oil absorbed by the inner rubber layer 1 penetrates into the outer rubber layer 2 side through the gap Q of the reinforcing layer 3, and Since the oil is volatilized from the surface of the rubber layer 2, there is an adverse effect that the viscosity of the oil increases significantly during long-term use.
この発明は、かかる従来の課題に着目して案出されたも
ので、補強層を芳香族アラくド繊維により密に編組して
構成することで、内面ゴム層と外面ゴム層との間の油の
浸透を遮断し、内面ゴム層から外面ゴム層へ油の浸透を
著しく低減させ、耐圧力も従来のものと同等に維持させ
ることか出来る高圧ゴムホースを提供することを目的と
するものである。This invention was devised by paying attention to such conventional problems, and by constructing the reinforcing layer by densely braiding aromatic aramid fibers, the structure between the inner rubber layer and the outer rubber layer is improved. To provide a high-pressure rubber hose that can block oil penetration, significantly reduce oil penetration from an inner rubber layer to an outer rubber layer, and maintain pressure resistance equal to that of conventional hoses.
〔課題を解決するための手段］
この発明は上記目的を遠戚するため、高圧ゴムホースの
補強層を、芳香族アラ砧ド繊維により無撚りまたは５回
／１０ｃｍ以下の甘撚りで密に編組して構成したことを
要旨とするものである。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is a method in which the reinforcing layer of a high-pressure rubber hose is densely braided with aromatic aramid fibers without twisting or with a soft twist of 5 turns/10 cm or less. The main points of this report are as follows.
この発明は上記のように構成され、内面ゴム層が吸収し
た低粘度油を外面ゴム層側へ浸透させるのを有効に防止
させて、油の粘度が著しく上昇するのを防止したことを
特徴としている。This invention is constructed as described above, and is characterized in that it effectively prevents the low-viscosity oil absorbed by the inner rubber layer from penetrating into the outer rubber layer, thereby preventing the viscosity of the oil from increasing significantly. There is.
（発明の実施例） 以下、添付図面に基づき、この発明の詳細な説明する。(Example of the invention) Hereinafter, the present invention will be described in detail based on the accompanying drawings.
なお、従来例と同一構成要素は、同一符号を付して説明
は省略する。Note that the same components as those in the conventional example are given the same reference numerals, and the description thereof will be omitted.
第１図は、補強Ｎ４の平面図、第２図は高圧コムホース
の一部断面図を示し、内面ゴム１１と外面ゴム層２との
間には、芳香族アラミド繊維により構成した補強Ｎ４が
埋設されている。Figure 1 shows a plan view of the reinforcement N4, and Figure 2 shows a partial sectional view of the high-pressure comb hose. Between the inner rubber layer 11 and the outer rubber layer 2, the reinforcement N4 made of aromatic aramid fiber is buried. has been done.
この補強層４は、無撚りまたは５回／１０ｃｍ＋以下の
甘撚りの上記芳香族アラミド繊維を使用し、編組は、編
組糸間に間隙が生じないように密に編組する。This reinforcing layer 4 uses the above-mentioned aromatic aramid fibers that are untwisted or lightly twisted at 5 times/10 cm+ or less, and are densely braided so that there are no gaps between the braided yarns.
この発明では、補強層４を、上記のように無撚りまたは
５回／１０ｃｍ以下の甘撚りで密に編組して構成したの
で、内面ゴム層１が吸収した低粘度油を外面ゴム層２側
へ浸透させるのを有効に防止出来、従って、ホース内の
混合油の粘度が上昇するのを防止出来るのである。In this invention, since the reinforcing layer 4 is constructed by densely braiding the reinforcing layer 4 with no twist or with a gentle twist of 5 times/10 cm or less as described above, the low viscosity oil absorbed by the inner rubber layer 1 is transferred to the outer rubber layer 2. This effectively prevents the mixed oil from penetrating into the hose, and therefore prevents the viscosity of the mixed oil in the hose from increasing.
〔発明の効果）
この発明は、上記のように高圧ゴムホースの補強層を、
芳香族アラミド繊維により無撚りまたは５回／１００以
下の甘撚りで密に編組して構成したので、内面ゴム層と
外面ゴム層と０間の油の浸透を遮断し、内面ゴム層から
外面ゴム層へ油の浸透を著しく低減させてホース内の混
合油の粘度が上昇するのを有効に防止出来、また耐圧力
も従来のものと同等に維持させることが出来る効果があ
る。[Effects of the Invention] As described above, the present invention provides a reinforcing layer of a high pressure rubber hose.
It is made of aromatic aramid fibers that are densely braided with no twist or with a gentle twist of 5 times/100 or less, so it blocks oil penetration between the inner rubber layer and the outer rubber layer. It has the effect of significantly reducing the penetration of oil into the layer, effectively preventing the viscosity of the mixed oil in the hose from increasing, and maintaining the same pressure resistance as conventional ones.
第１図は、この発明を実施した補強層の平面図、第２図
は高圧ゴムホースの一部断面図、第３図は従来の硬鋼線
を′Ｎｉ１組した補強層の平面図、第４図は従来の高圧
ゴムホースの一部断面図である。
ｌ・・・内面ゴム層、２・・・外面ゴム層、４・・・芳
香族アラミド繊維により構成した補強層。Fig. 1 is a plan view of a reinforcing layer embodying the present invention, Fig. 2 is a partial sectional view of a high-pressure rubber hose, Fig. 3 is a plan view of a reinforcing layer made of one set of conventional hard steel wires, and Fig. 4 is a plan view of a reinforcing layer in which the present invention is implemented. The figure is a partial cross-sectional view of a conventional high-pressure rubber hose. 1... Inner surface rubber layer, 2... Outer surface rubber layer, 4... Reinforcement layer composed of aromatic aramid fiber.
Claims (1)
なる高圧ゴムホースにおいて、前記補強層を、芳香族ア
ラミド繊維により無撚りまたは５回／１０ｃｍ以下の甘
撚りで密に編組して構成したことを特徴とする高圧ゴム
ホース。In a high-pressure rubber hose comprising a reinforcing layer buried between an inner rubber layer and an outer rubber layer, the reinforcing layer is densely braided with aromatic aramid fibers without twisting or with a gentle twist of 5 turns/10 cm or less. A high pressure rubber hose characterized by the following structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17118389A JP2769869B2 (en) | 1989-07-04 | 1989-07-04 | High pressure rubber hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17118389A JP2769869B2 (en) | 1989-07-04 | 1989-07-04 | High pressure rubber hose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0336025A true JPH0336025A (en) | 1991-02-15 |
| JP2769869B2 JP2769869B2 (en) | 1998-06-25 |
Family
ID=15918544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17118389A Expired - Fee Related JP2769869B2 (en) | 1989-07-04 | 1989-07-04 | High pressure rubber hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2769869B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268221A (en) * | 1990-02-23 | 1993-12-07 | Bando Chemical Industries, Ltd. | Fiber reinforced rubber articles |
| EP0641965A1 (en) * | 1993-09-07 | 1995-03-08 | Phoenix Aktiengesellschaft | Hollow, tubular element, especially a steam resistant hose, a compensator, and an air spring |
-
1989
- 1989-07-04 JP JP17118389A patent/JP2769869B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268221A (en) * | 1990-02-23 | 1993-12-07 | Bando Chemical Industries, Ltd. | Fiber reinforced rubber articles |
| EP0641965A1 (en) * | 1993-09-07 | 1995-03-08 | Phoenix Aktiengesellschaft | Hollow, tubular element, especially a steam resistant hose, a compensator, and an air spring |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2769869B2 (en) | 1998-06-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |