JPH11108260A - Hose for low pressure piping - Google Patents

Hose for low pressure piping

Info

Publication number
JPH11108260A
JPH11108260A JP27708397A JP27708397A JPH11108260A JP H11108260 A JPH11108260 A JP H11108260A JP 27708397 A JP27708397 A JP 27708397A JP 27708397 A JP27708397 A JP 27708397A JP H11108260 A JPH11108260 A JP H11108260A
Authority
JP
Japan
Prior art keywords
hose
pressure piping
low
piping
low pressure
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
Application number
JP27708397A
Other languages
Japanese (ja)
Inventor
Hideaki Takai
秀明 高井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP27708397A priority Critical patent/JPH11108260A/en
Publication of JPH11108260A publication Critical patent/JPH11108260A/en
Pending legal-status Critical Current

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  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve inserting facility into a piping member and slip-out preventing property from the piping member by forming the inner circumferential faces of the terminal end parts of a hose for low pressure piping into recessed and projecting parts, in a hose for low pressure piping to be fitted to the outer circumference of the piping member, and fixed by fitting a hose clamp to the outer circumference of the part to be fitted. SOLUTION: When a hose for low pressure piping is manufactured, at first the one end side terminal part of a non-vulcanized rubber hose 3 is inserted between the receiving part socket 41 and the receiving part nipple 42 of a receiving part 4. Next, a mandrel 5 provided with a mandrel socket 51 and a mandrel nipple 52 is inserted from the terminal part on the other end side of the non-vulcanized rubber hose 3. After these are vulcanized at high temperature, by drawing out the receiving part 4 and the mandrel 5, the hose for low pressure piping in which the inner circumferential faces of terminal parts are formed into recessed and projecting parts is provided. By such hose for low pressure piping, inserting facility into the piping member and slip-out preventing property from the piping member of the hose for low pressure piping can be improved.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は低圧配管用ホースに
関するものである。更に詳述すれば本発明は自動車のパ
ワーステアリングのリターンホースやサクションホース
等の低圧配管用ホースに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-pressure piping hose. More specifically, the present invention relates to a low pressure piping hose such as a return hose and a suction hose of a power steering of an automobile.

【0002】[0002]

【従来の技術】近年における自動車の発展は誠に目覚ま
しいものがある。
2. Description of the Related Art The development of automobiles in recent years has been remarkable.

【0003】最近の自動車では運転性の点からパワース
テアリングを標準装備する車が多くなってきている。
[0003] In recent years, many vehicles equipped with a power steering as a standard feature in terms of drivability.

【0004】この種のパワーステアリング装備自動車の
配管には高圧油をポンブからステアリング部へ圧送する
高圧配管と、そのステアリング部のパワーステアリング
作用で圧力が低下した低圧油をポンブへ戻すリターンホ
ースやサクションホース等がある。
A high-pressure pipe for supplying high-pressure oil from a pump to a steering section, a return hose or suction for returning low-pressure oil whose pressure has been reduced by the power steering action of the steering section to the pump, are provided in a pipe of a vehicle equipped with this type of power steering. There are hoses.

【0005】ここにおいて高圧配管に用いられるパワー
ステアリングホースの接続は高圧油を圧送することか
ら、そのホース端末部に耐高圧性が優れた高価なホース
金具を締結し、そのホース金具を介して接続するように
なっている。
[0005] Here, a power steering hose used for a high-pressure pipe is connected by connecting an expensive hose fitting excellent in high-pressure resistance to a hose end portion because high-pressure oil is pressure-fed, and connected through the hose fitting. It is supposed to.

【0006】これに対してリターンホースやサクション
ホースは低圧油を戻すたけであることから、その接続で
は高価で厄介な締結作業があるホース金具を締結するこ
とがなく、簡易な接続方式を採用するようになってい
る。
On the other hand, since a return hose or a suction hose only returns low-pressure oil, a simple connection method is adopted without connecting expensive and troublesome hose fittings for connection. It has become.

【0007】即ち、リターンホースやサクションホース
の接続では、まず接続する配管部材の外周へリターンホ
ースやサクションホースの端末部を被嵌し、次いでその
被嵌した端末部外周に2ワイヤクランプや板バネクラン
プ等を被嵌し、それらのバネ力によりホースを配管部へ
緊迫させるるようになっている。
That is, in the connection of the return hose or the suction hose, first, the terminal of the return hose or the suction hose is fitted to the outer periphery of the pipe member to be connected, and then the two-wire clamp or the leaf spring is fitted to the outer periphery of the fitted terminal. A clamp or the like is fitted, and the hose is tightened against the pipe by the spring force.

【0008】しかしながらこのような2ワイヤクランプ
や板バネクランプを用いた従来の接続方式ではリターン
ホースやサクションホースのゴムホースが経時的にゴム
特有の応力緩和現象が発生するため、接続端末部外周に
被嵌した2ワイヤクランプや板バネクランプの緊迫力が
徐々に低下し、その結果接続端末部より油洩れするとい
う懸念があった。
However, in the conventional connection method using such a two-wire clamp or a leaf spring clamp, a rubber hose such as a return hose or a suction hose is subjected to a stress relaxation phenomenon peculiar to rubber with the passage of time. There is a concern that the tightening force of the fitted two-wire clamp or the leaf spring clamp gradually decreases, and as a result, oil leaks from the connection terminal.

【0009】[0009]

【発明が解決しようとする課題】本発明はかかる点に立
って為されたものであって、その目的とするところは前
記した従来技術の欠点を解消し、リターンホースやサク
ションホースのようなゴムホースがたとえ経時的にゴム
特有の応力緩和現象を起こしたとしてもその接続端末部
外周に被嵌した2ワイヤクランプや板バネクランプの緊
迫力の低下を効果的に抑止できる低圧配管用ホースを提
供することにある。
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to solve the above-mentioned disadvantages of the prior art and to provide a rubber hose such as a return hose or a suction hose. However, even if a stress relaxation phenomenon peculiar to rubber occurs with time, a hose for a low-pressure pipe capable of effectively suppressing a decrease in the tightening force of a two-wire clamp or a leaf spring clamp fitted on the outer periphery of a connection terminal portion is provided. It is in.

【0010】[0010]

【課題を解決するための手段】本発明の要旨とするとこ
ろは、接続する配管部材の外周へ被嵌してから該被嵌部
外周へホースクランプを被嵌して緊迫固定できる低圧配
管用ホースであって、その低圧配管用ホースの端末部内
周面は凹凸に成っていることを特徴とする低圧配管用ホ
ースにある。
SUMMARY OF THE INVENTION The gist of the present invention is that a hose for a low-pressure pipe is fitted on the outer periphery of a pipe member to be connected and then fitted with a hose clamp on the outer periphery of the fitted portion to be tightly fixed. The low-pressure piping hose is characterized in that the inner peripheral surface at the end of the low-pressure piping hose is uneven.

【0011】本発明の低圧配管用ホースにおいて、端末
部内周面の凹凸は曲線状凹凸であり且つその曲線状凹凸
部のホース端部側角度Aが20〜30°、ホース中心部
側角度Bが50〜60°であることを特徴とする。
In the low-pressure piping hose according to the present invention, the unevenness on the inner peripheral surface of the end portion is a curved unevenness, and the angle A of the curved end portion on the hose end side is 20 to 30 °, and the angle B on the center of the hose is B. It is characterized by being 50 to 60 °.

【0012】本発明において曲線状凹凸部のホース端部
側角度Aを20°より小さくすると接続する配管部材の
外周へ被嵌したときにおける抜け防止性が小さく、逆に
30°より大きくすると被嵌作業能率が急激に低下する
からである。
In the present invention, if the angle A of the curved uneven portion on the hose end side is smaller than 20 °, the slip-off preventing property when fitted on the outer periphery of the pipe member to be connected is small. This is because the work efficiency sharply decreases.

【0013】また本発明において曲線状凹凸部のホース
中心部側角度Bを50〜60°としたのは、50°より
小さくすると配管部材の外周へ被嵌したときにおけるホ
ース抜け防止性が小さく、逆に60°より大きくすると
挿入性が低下するためである。
In the present invention, the reason why the angle B of the curved uneven portion on the center side of the hose is set to 50 to 60 ° is that if the angle is smaller than 50 °, the hose is less likely to come off when fitted on the outer periphery of the pipe member. Conversely, if the angle is larger than 60 °, the insertability decreases.

【0014】この低圧配管用ホースの端末部の内周面を
曲線状凹凸とすることにより、接続する配管部材の外周
へ被嵌してからその被嵌部外周へホースクランプを被嵌
したときにおける緊迫固定力を顕著に高めることがで
き、しかもその低圧配管用ホースの端末部ゴムの応力緩
和を効果的に抑止することができる。
[0014] By forming the inner peripheral surface of the end portion of this low-pressure piping hose into a curved uneven surface, the hose clamp is fitted to the outer periphery of the pipe member to be connected, and then the hose clamp is fitted to the outer periphery of the fitted portion. The tension fixing force can be remarkably increased, and the stress relaxation of the rubber at the end of the low-pressure piping hose can be effectively suppressed.

【0015】[0015]

【発明の実施の形態】次に、本発明の低圧配管用ホース
の一実施例を図面により説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the hose for low-pressure piping according to the present invention will be described with reference to the drawings.

【0016】図1は本発明の低圧配管用ホースの一実施
例を示した縦断面図である。
FIG. 1 is a longitudinal sectional view showing one embodiment of a hose for a low-pressure pipe according to the present invention.

【0017】図1において1は本発明の一実施例の低圧
配管用ホース、2はその端末部の内周面の曲線状凹凸で
ある。
In FIG. 1, reference numeral 1 denotes a hose for a low-pressure pipe according to an embodiment of the present invention, and reference numeral 2 denotes a curved unevenness on an inner peripheral surface of a terminal portion thereof.

【0018】ここにおいて曲線状凹凸部のホース端部側
角度Aは20°であり、またホース中心部側角度Bは5
5°である。
Here, the angle A on the hose end portion side of the curved uneven portion is 20 °, and the angle B on the hose center portion side is 5 °.
5 °.

【0019】図2はこの本発明の一実施例の低圧配管用
ホースの製造方法を図解した説明図である。
FIG. 2 is an explanatory view illustrating a method of manufacturing a hose for a low-pressure pipe according to one embodiment of the present invention.

【0020】図2において3は両端末部の内周面を曲線
状凹凸としようとする未加硫ゴムホース、4はそのゴム
ホース4の一端側端末部内周面に曲線状凹凸を成形する
ことができる受部、41はその受部ルソケット、42は
同じく受部ニップル、5はゴムホース4の他端側端末部
内周面に曲線状凹凸を成形できるマンドレル、51はそ
のマンドレルソケット、52は同じくマンドレルニップ
ルである。
In FIG. 2, reference numeral 3 denotes an unvulcanized rubber hose in which the inner peripheral surfaces of both end portions are made to have curved irregularities, and 4 denotes a curved irregularity formed on the inner peripheral surface of one end side of the rubber hose 4. A receiving portion, 41 is a receiving portion socket, 42 is a receiving portion nipple, 5 is a mandrel capable of forming curved irregularities on the inner peripheral surface of the other end of the rubber hose 4, 51 is a mandrel socket, and 52 is a mandrel nipple. is there.

【0021】即ち、本発明の一実施例の低圧配管用ホー
スの製造方法は、まず受部4の受部ルソケット41と受
部ニップル42との間に未加硫ゴムホース3の一端側端
末部を挿入し、次いでその未加硫ゴムホース3の他端側
端末部側よりマンドレル5を挿入し、それからこれらを
高温で加硫し、最後に受部4及びマンドレル5を抜き取
ることにより本発明の一実施例の低圧配管用ホースを得
ることができる。
That is, in the method of manufacturing a hose for a low-pressure pipe according to one embodiment of the present invention, first, the end portion of one end of the unvulcanized rubber hose 3 is placed between the receiving portion socket 41 of the receiving portion 4 and the receiving portion nipple 42. The mandrel 5 is inserted from the other end side of the unvulcanized rubber hose 3 and then vulcanized at a high temperature, and finally, the receiving part 4 and the mandrel 5 are removed. An example low pressure piping hose can be obtained.

【0022】図3は従来の低圧配管用ホースと本発明の
一実施例の低圧配管用ホースとについて、80℃・60
日間の熱劣化〜シール圧力変化特性をみたものである。
FIG. 3 shows a conventional low-pressure piping hose and a low-pressure piping hose according to one embodiment of the present invention at 80.degree.
This is a graph showing the relationship between the heat deterioration and the seal pressure change characteristics for one day.

【0023】図3から分かるように本発明の一実施例の
低圧配管用ホースは高温で熱劣化してもシール性の低下
が極めて小さい。
As can be seen from FIG. 3, the hose for low-pressure piping according to one embodiment of the present invention has a very small decrease in sealing performance even when thermally degraded at high temperatures.

【0024】図4は従来の低圧配管用ホースと本発明の
一実施例の低圧配管用ホースとについて、挿入力とシー
ル圧力との関係を示したものである。
FIG. 4 shows the relationship between the insertion force and the sealing pressure for the conventional low-pressure piping hose and the low-pressure piping hose of one embodiment of the present invention.

【0025】図4から分かるように本発明の一実施例の
低圧配管用ホースは挿入力とシール圧力とがバランス良
く作業することができる。
As can be seen from FIG. 4, the hose for low-pressure piping according to one embodiment of the present invention can work with a good balance between the insertion force and the sealing pressure.

【0026】図5は本発明の低圧配管用ホースの曲線状
凹凸部のホース端部側角度Aとホース中心部側角度Bと
の角度表示を示した説明図である。
FIG. 5 is an explanatory diagram showing the angle display of the hose end side angle A and the hose center side angle B of the curved uneven portion of the low-pressure piping hose of the present invention.

【0027】表1は図5において角度を変えて製作した
本発明の低圧配管用ホースの実施例と比較例とについ
て、配管部材への挿入性と配管部材からのホース抜け防
止性とを比較試験した結果を示したものである。
Table 1 shows a comparison test between the embodiment of the low-pressure piping hose of the present invention and the comparative example which were manufactured by changing the angle in FIG. This shows the result of the measurement.

【0028】[0028]

【表1】 [Table 1]

【0029】表1から分かるように本発明の低圧配管用
ホースは配管部材への挿入性及び配管部材からの抜け防
止性が共に優れた結果を示した。
As can be seen from Table 1, the low-pressure piping hose of the present invention showed excellent results in both the insertability into the piping member and the prevention of removal from the piping member.

【0030】[0030]

【発明の効果】本発明の低圧配管用ホースは配管部材へ
の挿入性及び配管部材からの抜け防止性が共に優れてお
り、工業上有用である。
The hose for low-pressure piping according to the present invention is excellent in both the insertability into the piping member and the prevention of removal from the piping member, and is industrially useful.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の低圧配管用ホースの一実施例を示した
縦断面図である。
FIG. 1 is a longitudinal sectional view showing one embodiment of a low-pressure piping hose of the present invention.

【図2】本発明の一実施例の低圧配管用ホースの製造方
法を図解した説明図である。
FIG. 2 is an explanatory view illustrating a method for manufacturing a low-pressure piping hose according to one embodiment of the present invention.

【図3】従来の低圧配管用ホースと本発明の一実施例の
低圧配管用ホースとについて、80℃・60日間の熱劣
化〜シール圧力変化特性をみたものである。
FIG. 3 is a graph showing characteristics of heat deterioration at 80 ° C. for 60 days to change in seal pressure for a conventional low-pressure piping hose and a low-pressure piping hose of one embodiment of the present invention.

【図4】従来の低圧配管用ホースと本発明の一実施例の
低圧配管用ホースとについて、挿入力とシール圧力との
関係を示したものである。
FIG. 4 shows the relationship between the insertion force and the sealing pressure for the conventional low-pressure piping hose and the low-pressure piping hose of one embodiment of the present invention.

【図5】本発明の低圧配管用ホースの曲線状凹凸部のホ
ース端部側角度Aとホース中心部側角度Bとの角度表示
を示した説明図である。
FIG. 5 is an explanatory diagram showing an angle display of a hose end side angle A and a hose center side angle B of a curved uneven portion of the low-pressure piping hose of the present invention.

【符号の説明】[Explanation of symbols]

1 本発明の低圧配管用ホース 2 曲線状凹凸 3 未加硫ゴムホース 4 受部 41 受部ルソケット 42 受部ニップル 5 マンドレル 51 マンドレルソケット 52 マンドレルニップル DESCRIPTION OF SYMBOLS 1 Low-pressure piping hose of the present invention 2 Curved unevenness 3 Unvulcanized rubber hose 4 Receiving part 41 Receiving part socket 42 Receiving part nipple 5 Mandrel 51 Mandrel socket 52 Mandrel nipple

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】接続する配管部材の外周へ被嵌してから該
被嵌部外周へホースクランプを被嵌して緊迫固定できる
低圧配管用ホースであって、該低圧配管用ホースの端末
部内周面は凹凸に成っていることを特徴とする低圧配管
用ホース。
1. A hose for a low-pressure pipe which is fitted on the outer circumference of a pipe member to be connected, and is then tightly fixed by being fitted with a hose clamp on the outer circumference of the fitting part. Hose for low pressure piping characterized in that the surface is uneven.
【請求項2】凹凸が曲線状凹凸であり且つ該曲線状凹凸
部のホース端部側角度Aが20〜30°、ホース中心部
側角度Bが50〜60°であることを特徴とする請求項
1記載の低圧配管用ホース。
2. The method according to claim 1, wherein the irregularities are curved irregularities, and the angle A on the hose end side of the curved irregularities is 20 to 30 °, and the angle B on the center of the hose is 50 to 60 °. Item 7. A low-pressure piping hose according to item 1.
JP27708397A 1997-10-09 1997-10-09 Hose for low pressure piping Pending JPH11108260A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27708397A JPH11108260A (en) 1997-10-09 1997-10-09 Hose for low pressure piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27708397A JPH11108260A (en) 1997-10-09 1997-10-09 Hose for low pressure piping

Publications (1)

Publication Number Publication Date
JPH11108260A true JPH11108260A (en) 1999-04-20

Family

ID=17578550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27708397A Pending JPH11108260A (en) 1997-10-09 1997-10-09 Hose for low pressure piping

Country Status (1)

Country Link
JP (1) JPH11108260A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7137903B2 (en) 2004-04-21 2006-11-21 Acushnet Company Transitioning hollow golf clubs
JP2007092883A (en) * 2005-09-29 2007-04-12 Kurashiki Kako Co Ltd Hose and its manufacturing method
JP2020079582A (en) * 2018-11-14 2020-05-28 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh Intake hose deterioration determination method and vehicle operation control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7137903B2 (en) 2004-04-21 2006-11-21 Acushnet Company Transitioning hollow golf clubs
US7147571B2 (en) 2004-04-21 2006-12-12 Acushnet Company Transitioning hollow golf clubs
JP2007092883A (en) * 2005-09-29 2007-04-12 Kurashiki Kako Co Ltd Hose and its manufacturing method
JP2020079582A (en) * 2018-11-14 2020-05-28 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh Intake hose deterioration determination method and vehicle operation control device

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