JPH06307585A - Hose - Google Patents
HoseInfo
- Publication number
- JPH06307585A JPH06307585A JP5100748A JP10074893A JPH06307585A JP H06307585 A JPH06307585 A JP H06307585A JP 5100748 A JP5100748 A JP 5100748A JP 10074893 A JP10074893 A JP 10074893A JP H06307585 A JPH06307585 A JP H06307585A
- Authority
- JP
- Japan
- Prior art keywords
- hose
- straight
- bellows
- inner hose
- tube
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はホースに関する。本発明
に係るホースは例えばガソリン燃料等を送給する燃料ホ
ースに利用できる。This invention relates to hoses. The hose according to the present invention can be used, for example, as a fuel hose for feeding gasoline fuel or the like.
【０００２】[0002]
【従来の技術】近年、２重管構造のホースが開発されて
いる。例えば、実公平１−３１８３９号公報には、蛇腹
筒状のたわみ管を用い、たわみ管の端部の直筒部にプラ
スチック製の外装チューブを加熱収縮により密着させた
フレキシブルチューブが開示されている。また実開昭５
８−４２４８４号公報には、蛇腹筒状の外管内に蛇腹筒
状の薄肉の内管を略同軸的に配置すると共に、内管の蛇
腹の波高さを外管の蛇腹の波高さよりも小さくした可撓
管が開示されている。また実開昭５０−８０６２１号公
報には、直状のガイドホース部の外周側を蛇腹筒状の保
護ホースで覆った自動車用の燃料注油ホースが開示され
ている。また実開平１−１１４４２７号公報には、フュ
ーエルタンクに一体成形したフィラーパイプの軸長方向
の一部に脆弱部を形成し、フィラーパイプ全体の外周側
を可撓性ホースで覆った車両のフィラーパイプ構造が開
示されている。2. Description of the Related Art In recent years, a hose having a double pipe structure has been developed. For example, Japanese Utility Model Publication No. 1-31839 discloses a flexible tube in which a flexible tube having a bellows tubular shape is used, and a plastic outer tube is adhered to the straight tubular portion at the end of the flexible tube by heat shrinkage. See also Kai 5
In Japanese Patent Laid-Open No. 8-42484, a bellows tubular thin-walled inner tube is arranged substantially coaxially in an bellows tubular outer tube, and the wave height of the bellows of the inner tube is made smaller than the wave height of the bellows of the outer tube. A flexible tube is disclosed. Japanese Utility Model Application Laid-Open No. 50-80621 discloses a fuel injection hose for an automobile in which the outer peripheral side of a straight guide hose is covered with a bellows-shaped protective hose. Japanese Utility Model Laid-Open No. 114427/1989 discloses a vehicle filler in which a filler pipe integrally formed with a fuel tank has a fragile portion formed in a part in the axial direction and the outer peripheral side of the entire filler pipe is covered with a flexible hose. A pipe structure is disclosed.
【０００３】[0003]
【発明が解決しようとする課題】ところで、外ホース部
の内部に別体の内ホース部を配置した２重管構造のホー
スでは、外ホース部と内ホース部との組み付け性の向上
が要請されている。しかし上記した各公報にかかる技術
では、組み付け性に向上には必ずしも充分ではない。By the way, in a hose having a double pipe structure in which a separate inner hose is arranged inside the outer hose, it is required to improve the assemblability of the outer hose and the inner hose. ing. However, the techniques according to the above publications are not always sufficient to improve the assembling property.
【０００４】本発明は上記した実情に鑑みなされたもの
であり、その目的は、外ホース部と内ホース部との一体
性を向上させ、組み付け性を改良したホースを提供する
ことにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hose having an improved assembling property by improving the integrity of the outer hose portion and the inner hose portion.
【０００５】[0005]
【課題を解決するための手段】本発明のホースは、第１
の蛇腹筒部と第１の蛇腹筒部の両端部に延設された第１
の直筒部とをもつ、ゴムを基材とする外ホース部と、外
ホース部内に略同軸的に配置され、第２の蛇腹筒部と第
２の蛇腹筒部の両端部に延設されかつ第１の直筒部の内
周面に対面する第２の直筒部とをもつ、樹脂を基材とす
る内ホース部とを具備し、内ホース部の第２の直筒部の
少なくとも一方は、一方に一体的に連設されかつ外ホー
ス部の第１の直筒部の少なくとも軸端側の外周面を覆っ
て第１の直筒部に係合する係合部をもつことを特徴とす
るものである。The hose of the present invention comprises a first hose.
The first bellows extending from both ends of the bellows tube and the first bellows
An outer hose made of rubber as a base material, which has a straight tube part of, and a substantially coaxially arranged inside the outer hose part, and extends to both ends of the second bellows tube part and the second bellows tube part. An inner hose part made of resin and having a second straight tube part facing the inner peripheral surface of the first straight tube part, wherein at least one of the second straight tube parts of the inner hose part is one And an engaging portion that is integrally connected to the outer hose portion and that covers at least the outer peripheral surface of the first straight cylindrical portion of the outer hose portion on the axial end side and that is engaged with the first straight cylindrical portion. .
【０００６】直筒部とは、蛇腹が形成されていない筒と
いう意味である。内ホース部の第２の直筒部は、これに
一体的に連設されかつ外ホース部の第１の直筒部の少な
くとも軸端側の外周面を覆って第１の直筒部に係合する
係合部をもつ。係合部は、外ホース部の第１の直筒部の
外周面を周方向に連続して覆う筒状でも、あるいは、外
ホース部の第１の直筒部の外周面の一部を部分的に覆う
形状でも良い。The straight tube portion means a tube having no bellows. The second straight cylindrical portion of the inner hose portion is integrally connected to the second straight cylindrical portion and covers the outer peripheral surface of at least the shaft end side of the first straight cylindrical portion of the outer hose portion to engage with the first straight cylindrical portion. It has a joint. The engaging portion may have a tubular shape that continuously covers the outer peripheral surface of the first straight tubular portion of the outer hose portion in the circumferential direction, or may partially cover a part of the outer peripheral surface of the first straight tubular portion of the outer hose portion. The shape to cover may be sufficient.
【０００７】外ホース部の材質は適宜選択できるが、耐
火炎性、耐摩耗性、耐油性等を考慮してニトリルゴム
（ＮＢＲ）系、ニトリルゴム（ＮＢＲ）と塩化ビニル
（ＰＶＣ）との混合物、エピクロロヒドリンゴム（Ｃ
Ｏ、ＥＣＯ）系、フッ素ゴム系（ＦＫＭ系）、ＣＨＣ系
を採用できる。内ホース部の材質は適宜選択できるが、
バリヤ性に優れたポリアミド樹脂（ＰＡ）を採用でき
る。The material of the outer hose can be appropriately selected, but in consideration of flame resistance, abrasion resistance, oil resistance, etc., a nitrile rubber (NBR) system, a mixture of nitrile rubber (NBR) and vinyl chloride (PVC). , Epichlorohydrin rubber (C
O, ECO) type, fluororubber type (FKM type), CHC type can be adopted. The material of the inner hose can be selected as appropriate,
Polyamide resin (PA) with excellent barrier properties can be used.
【０００８】[0008]
【作用】内ホース部に連設された係合部は、外ホース部
の第１の直筒部の軸端側の外周面を覆って第１の直筒部
に係合するため、内ホース部と外ホース部との一体性は
向上する。Since the engaging portion connected to the inner hose portion covers the outer peripheral surface of the first straight cylindrical portion of the outer hose portion on the shaft end side and engages with the first straight cylindrical portion, The integrity with the outer hose is improved.
【０００９】[0009]
【実施例】以下、本発明に係るホースの実施例を図１〜
図４を参照して説明する。 （実施例の構成）図１は組み付け後の状態のホース全体
の断面を示し、図２は組み付け途中の状態を示す。EXAMPLES Examples of the hose according to the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. (Structure of Embodiment) FIG. 1 shows a cross section of the entire hose after assembly, and FIG. 2 shows a state during assembly.
【００１０】図１に示すように、この例に係るホース
は、外ホース部１と、外ホース部１の中央孔１ｉ内に略
同軸的に配置された内ホース部２と、シール部材５とで
構成されている。図２に示すように、外ホース部１は、
軸長方向の中間域に位置する第１の蛇腹筒部１０と、軸
長方向の両端部に設けられた第１の直筒部１１とで形成
されている。第１の蛇腹筒部１０は蛇腹状であり、リン
グ状にのびる頂部１０ａ及び谷部１０ｃをもつ。第１の
蛇腹筒部１０の蛇腹部分の波高さは７．５〜１０ｍｍ程
度とされている。外ホース部１の周壁の厚さは２〜４ｍ
ｍ程度とされている。なお第１の直筒部１１の外周面に
はリング状の突部１１ｅ、リング状の微小突部１１ｆが
形成されており、突部１１ｅの内面側にはリング状の溝
１１ｘが形成されている。As shown in FIG. 1, the hose according to this example includes an outer hose portion 1, an inner hose portion 2 arranged substantially coaxially in a central hole 1i of the outer hose portion 1, and a seal member 5. It is composed of. As shown in FIG. 2, the outer hose portion 1 is
It is formed by a first bellows tubular portion 10 located in an intermediate region in the axial direction and first straight tubular portions 11 provided at both ends in the axial direction. The first bellows tube portion 10 has a bellows shape, and has a ring-shaped top portion 10a and a valley portion 10c. The wave height of the bellows portion of the first bellows tube portion 10 is about 7.5 to 10 mm. The thickness of the peripheral wall of the outer hose portion 1 is 2 to 4 m.
It is about m. A ring-shaped protrusion 11e and a ring-shaped minute protrusion 11f are formed on the outer peripheral surface of the first straight tube portion 11, and a ring-shaped groove 11x is formed on the inner surface side of the protrusion 11e. .
【００１１】外ホース部１の材質は、耐火炎性、耐摩耗
性、耐油性等を考慮してニトリルゴム（ＮＢＲ）と塩化
ビニル（ＰＶＣ）との混合物が採用されている。外ホー
ス部１は射出成形後に加硫して形成されている。さて、
図３は組み付け前の状態の内ホース部２を示す。図３に
示すように、内ホース部２は、軸長方向の中央域に位置
する第２の蛇腹筒部２０と、第２の蛇腹筒部２０の軸長
方向の両端部に設けられた第２の直筒部２１と、第２の
直筒部２１から径内方向に湾曲した弧状部２１ｆを介し
て一体的に連設された係合部としての係合筒部２５とで
形成されている。The outer hose 1 is made of a mixture of nitrile rubber (NBR) and vinyl chloride (PVC) in consideration of flame resistance, wear resistance, oil resistance and the like. The outer hose portion 1 is formed by vulcanization after injection molding. Now,
FIG. 3 shows the inner hose portion 2 before being assembled. As shown in FIG. 3, the inner hose portion 2 includes a second bellows tube portion 20 located in a central region in the axial length direction, and a second bellows tube portion 20 provided at both end portions in the axial length direction. It is formed of two straight cylindrical portions 21 and an engaging cylindrical portion 25 as an engaging portion integrally connected to the second straight cylindrical portion 21 via an arcuate portion 21f curved in the radial direction.
【００１２】組み付け前の状態においては、両端の係合
筒部２５に対応するぶん、内ホース部２の軸長は外ホー
ス部１の軸長に比較して長く設定されている。また内ホ
ース部２の第２の直筒部２１の外周面にはリング状の突
部２１ｘが形成されている。ここで図２から理解できる
ように、第２の直筒部２１の外径は外ホース部１の第１
の直筒部１１の内径と実質的に等しく設定されている。
第２の蛇腹筒部２０は蛇腹状をなし、リング状にのびる
頂部２０ａ及び谷部２０ｃをもつ。In the state before assembly, the axial length of the inner hose portion 2 is set longer than the axial length of the outer hose portion 1 corresponding to the engaging tubular portions 25 at both ends. A ring-shaped protrusion 21x is formed on the outer peripheral surface of the second straight cylindrical portion 21 of the inner hose portion 2. Here, as can be understood from FIG. 2, the outer diameter of the second straight tubular portion 21 is equal to that of the first hose portion 1 of the outer hose portion 1.
It is set to be substantially equal to the inner diameter of the straight cylindrical portion 11.
The second bellows tube portion 20 has a bellows shape, and has a ring-shaped top portion 20a and a valley portion 20c.
【００１３】内ホース部２の隣り合う頂部２０ａ間のピ
ッチは、外ホース部１の隣り合う頂部１０ａ間のピッチ
よりも小さく設定されている。また第２の蛇腹筒部２０
の蛇腹部分の波高さは３〜５ｍｍ程度とされ、従って、
外ホース部１の第１の蛇腹筒部１０の蛇腹部分の波高さ
より小さくされている。更に、図２から理解できる様に
内ホース部２の頂部２０ａの外径は第２の直筒部２１の
外径よりもいくぶん小さくされている。The pitch between the adjacent top portions 20a of the inner hose portion 2 is set smaller than the pitch between the adjacent top portions 10a of the outer hose portion 1. In addition, the second bellows tube portion 20
The wave height of the bellows part is about 3-5 mm, therefore
It is smaller than the wave height of the bellows portion of the first bellows tube portion 10 of the outer hose portion 1. Further, as can be seen from FIG. 2, the outer diameter of the top portion 20a of the inner hose portion 2 is made slightly smaller than the outer diameter of the second straight tubular portion 21.
【００１４】このような構成の本実施例では、ホース全
体の可撓性を確保するのに有利であり、ホースを屈曲配
置した際における外ホース部１及び内ホース部２の干渉
を避けるのに有利である。内ホース部２の内周面によ
り、流体としてのガソリン燃料等の流体が通過する通過
孔２ｉが形成されている。なお内ホース部２の周壁の厚
さは０．５〜１．０ｍｍ程度とされている。In this embodiment having such a structure, it is advantageous to ensure the flexibility of the entire hose, and to avoid interference between the outer hose portion 1 and the inner hose portion 2 when the hose is bent and arranged. It is advantageous. The inner peripheral surface of the inner hose portion 2 forms a passage hole 2i through which a fluid such as gasoline fuel as a fluid passes. The thickness of the peripheral wall of the inner hose portion 2 is about 0.5 to 1.0 mm.
【００１５】内ホース部２の材質は、バリヤ性及び柔軟
性を考慮してポリアミド樹脂（１１ナイロン、６ナイロ
ン、１２ナイロン）が採用されている。また内ホース部
２はブロー成形、射出ブロー成形、押出ブロー成形など
のいずれかにより形成されている。図４にシール部材５
を示す。図４に示すようにシール部材５は、リング状の
外シール部５１とこれに連設されたリング状の内シール
部５２とからなり、開口５３ｒを備えたリング状のシー
ル溝５３をもつ。外シール部５１はその外周面にリング
状の突部５１ａ、リング状の微小突部５１ｂをもつ。内
シール部５２はその内周面にストッパ突部５２ａをも
つ。シール部材５はニトリルゴム（ＮＢＲ）と塩化ビニ
ル（ＰＶＣ）との混合物を射出成形した後に加硫して形
成されている。 （組み付け）さて本実施例では、外ホース部１、内ホー
ス部２及びシール部材５を別々に成形する。そして、図
２に示すように、外ホース部１の内部に内ホース部２を
略同軸的に挿入し、外ホース部１の第１の直筒部１１と
内ホース部２の第２の直筒部２１とを互いに重なり合っ
た状態とする。更に内ホース部２の弧状部２１ｆを介し
て係合筒部２５を半径方向外方つまり図３に示す矢印Ｈ
１方向に折り返し、この結果図２に示すように、係合筒
部２５は、外ホース部１の第１の直筒部１１の軸端側の
外周面１１ｋを覆って第１の直筒部１１に係合する。そ
のため、内ホース部２の第２の直筒部２１と外ホース部
１の第１の直筒部１１との一体性は向上する。更に本実
施例では図２から理解できるように、内ホース部２の突
部２１ｘは外ホース部１の溝１１ｘに係合するため、両
者の一体性は一層向上するこのように一体化した第１の
直筒部１１及び第２の直筒部２１にシール部材５のリン
グ状のシール溝５３を嵌め、これによりシール部材５を
内ホース部２及び外ホース部１の軸端にそれぞれ装着す
る。As a material for the inner hose portion 2, polyamide resin (11 nylon, 6 nylon, 12 nylon) is adopted in consideration of barrier property and flexibility. The inner hose portion 2 is formed by any one of blow molding, injection blow molding, extrusion blow molding and the like. The seal member 5 is shown in FIG.
Indicates. As shown in FIG. 4, the seal member 5 is composed of a ring-shaped outer seal portion 51 and a ring-shaped inner seal portion 52 connected to the ring-shaped outer seal portion 51, and has a ring-shaped seal groove 53 having an opening 53r. The outer seal portion 51 has a ring-shaped protrusion 51a and a ring-shaped minute protrusion 51b on its outer peripheral surface. The inner seal portion 52 has a stopper protrusion 52a on its inner peripheral surface. The seal member 5 is formed by injection-molding a mixture of nitrile rubber (NBR) and vinyl chloride (PVC) and then vulcanizing the mixture. (Assembly) In this embodiment, the outer hose portion 1, the inner hose portion 2 and the seal member 5 are separately molded. Then, as shown in FIG. 2, the inner hose portion 2 is inserted substantially coaxially inside the outer hose portion 1, and the first straight tubular portion 11 of the outer hose portion 1 and the second straight tubular portion of the inner hose portion 2 are inserted. 21 and 21 are in a state of overlapping each other. Further, the engaging tube portion 25 is moved radially outward through the arcuate portion 21f of the inner hose portion 2, that is, the arrow H shown in FIG.
As a result, the engaging tubular portion 25 covers the outer peripheral surface 11k on the shaft end side of the first straight tubular portion 11 of the outer hose portion 1 to the first straight tubular portion 11 as shown in FIG. Engage. Therefore, the integrity of the second straight tubular portion 21 of the inner hose portion 2 and the first straight tubular portion 11 of the outer hose portion 1 is improved. Further, in this embodiment, as can be understood from FIG. 2, since the protrusion 21x of the inner hose portion 2 engages with the groove 11x of the outer hose portion 1, the integrity of the two is further improved. The ring-shaped seal groove 53 of the seal member 5 is fitted into the straight cylindrical portion 11 and the second straight cylindrical portion 21 of the first seal member 5, and the seal member 5 is attached to the shaft ends of the inner hose portion 2 and the outer hose portion 1, respectively.
【００１６】その後、図１から理解できる様に、先端に
リング状の拡径部７ｃをもつ相手部材である相手パイプ
７を用い、その相手パイプ７を挿入してシール部材５の
内シール部５２の内側に嵌める。その後、外側からクラ
ンプ部材４でシール部材５を外ホース部１の第１の直筒
部１１に締着する。なお、シール部材５のストッパ突部
５２ａは、相手パイプ７を挿入する際のストッパとして
機能できる。Then, as can be understood from FIG. 1, a mating pipe 7 which is a mating member having a ring-shaped expanded portion 7c at the tip is used, and the mating pipe 7 is inserted to insert the inner sealing portion 52 of the seal member 5. Fit inside. After that, the seal member 5 is fastened to the first straight tube portion 11 of the outer hose portion 1 from the outside by the clamp member 4. The stopper protrusion 52a of the seal member 5 can function as a stopper when the mating pipe 7 is inserted.
【００１７】このように組み付けた状態では、図１から
理解できる様に、内ホース部２の第２の直筒部２１の内
周面とシール部材５の内シール部５２との境界域、内ホ
ース部２の第２の直筒部２１と外ホース部１の第１の直
筒部１１との境界域、外ホース部１の第１の直筒部１１
とシール部材５の外シール部５１との境界域、相手パイ
プ７の外周面とシール部材５の内シール部５２との境界
域はシールされる。従ってホース内を流れるガソリン燃
料等の流体が各境界域から透過することが抑止される。In this assembled state, as can be understood from FIG. 1, the boundary area between the inner peripheral surface of the second straight tubular portion 21 of the inner hose portion 2 and the inner seal portion 52 of the seal member 5, the inner hose. A boundary region between the second straight tubular portion 21 of the portion 2 and the first straight tubular portion 11 of the outer hose portion 1, the first straight tubular portion 11 of the outer hose portion 1
And a boundary area between the outer seal portion 51 of the seal member 5 and a boundary area between the outer peripheral surface of the mating pipe 7 and the inner seal portion 52 of the seal member 5 are sealed. Therefore, the fluid such as gasoline fuel flowing in the hose is prevented from permeating from each boundary area.
【００１８】また上記した様に組み付けた状態では、図
１に示すように、第２の蛇腹筒部２０と第１の蛇腹筒部
１０との間には、筒状空気層３が形成されており、従っ
てホースが撓み変形する際、第１の蛇腹筒部１０と第２
の蛇腹筒部２０とはそれぞれ独立して変形でき、ホース
の柔軟性の確保に有利である。 （実施例の効果）以上説明した様に本実施例では、内ホ
ース部２の係合筒部２５は、外ホース部１の第１の直筒
部１１の軸端側の外周面１１ｋを覆って第１の直筒部１
１に係合するため、内ホース部２の第２の直筒部２１と
外ホース部１の第１の直筒部１１との一体性は向上す
る。そのため外ホース部１に対する内ホース部２の第２
の直筒部２１の相対変位は抑えられる。したがって、第
２の直筒部２１及び第１の直筒部１１は一体的に挙動す
る。よって、シール部材５を装着して組み付ける際にお
いても、あるいは、相手パイプ７を挿入して組み付ける
際においても、組み付け性の向上が図られる。In the assembled state as described above, as shown in FIG. 1, a tubular air layer 3 is formed between the second bellows tubular portion 20 and the first bellows tubular portion 10. And therefore when the hose flexes and deforms, the first bellows barrel 10 and the second bellows
It can be deformed independently of the bellows tube portion 20 and is advantageous for ensuring the flexibility of the hose. (Effects of Embodiment) As described above, in this embodiment, the engaging tubular portion 25 of the inner hose portion 2 covers the outer peripheral surface 11k of the first straight tubular portion 11 of the outer hose portion 1 on the shaft end side. First straight tube portion 1
Since the first straight cylinder portion 21 of the inner hose portion 2 and the first straight cylinder portion 11 of the outer hose portion 1 are integrated with each other, the integrity is improved. Therefore, the second of the inner hose 2 with respect to the outer hose 1
The relative displacement of the straight cylindrical portion 21 is suppressed. Therefore, the second straight tubular portion 21 and the first straight tubular portion 11 behave integrally. Therefore, even when the seal member 5 is mounted and assembled, or when the mating pipe 7 is inserted and assembled, the assembling property is improved.
【００１９】加えて本実施例では、組み付け時には、内
ホース部２の突部２１ｘが外ホース部１の溝１１ｘに係
合するので、両者の一体性が一層確保される。また本実
施例では、シール部材５のリング状のシール溝５３に外
ホース部１の第１の直筒部１１と内ホース部２の第２の
直筒部２１とを互いに重なり合った状態で嵌めている。
そして、相手パイプ７を内ホース部２の第２の直筒部２
１内に挿入し、クランプ部材４によりシール部材５を締
着するものである。従って前述した様に上記した各境界
域におけるシール性が確保され、ガソリン燃料等の流体
の透過が抑止される。In addition, in this embodiment, the projection 21x of the inner hose portion 2 engages with the groove 11x of the outer hose portion 1 during assembly, so that the integrity of the two is further ensured. Further, in this embodiment, the first straight cylindrical portion 11 of the outer hose portion 1 and the second straight cylindrical portion 21 of the inner hose portion 2 are fitted in the ring-shaped seal groove 53 of the seal member 5 in a state of overlapping each other. .
Then, the mating pipe 7 is connected to the second straight cylindrical portion 2 of the inner hose portion 2.
1 and the sealing member 5 is fastened by the clamp member 4. Therefore, as described above, the sealing property in each of the above-mentioned boundary areas is secured, and the permeation of fluid such as gasoline fuel is suppressed.
【００２０】また本実施例では、内ホース部２がバリヤ
性に優れたポリアミド樹脂で形成されているため、ガソ
リン燃料の透過抑止、蒸発抑止に有利である。また本実
施例では、外ホース部１は加硫ゴムで形成されているの
で、火炎や衝撃に対する内ホース部２の保護性が確保さ
れる。更に、内ホース部２と外ホース部１との間に形成
された筒状空気層３は、空気断熱層としても作用するた
め、ホース外の熱が内ホース部２に伝達されにくくな
り、内ホース部２に対する断熱性、内ホース部２の耐火
炎性が一層確保される。 （適用例）図５は車両の燃料タンクに適用した適用例を
示す。図５において９０は車両に装備される燃料タン
ク、９１は本願発明のホースに相当するフューエルイン
レットホース、９２はフューエルインレットパイプを示
す。Further, in this embodiment, since the inner hose portion 2 is formed of polyamide resin having excellent barrier properties, it is advantageous in suppressing permeation and evaporation of gasoline fuel. Further, in this embodiment, since the outer hose portion 1 is made of vulcanized rubber, the protection of the inner hose portion 2 against flames and impacts is ensured. Furthermore, since the tubular air layer 3 formed between the inner hose portion 2 and the outer hose portion 1 also functions as an air heat insulating layer, it becomes difficult for heat outside the hose to be transferred to the inner hose portion 2, The heat insulation of the hose portion 2 and the flame resistance of the inner hose portion 2 are further secured. (Application example) FIG. 5 shows an application example applied to a fuel tank of a vehicle. In FIG. 5, 90 is a fuel tank mounted on the vehicle, 91 is a fuel inlet hose corresponding to the hose of the present invention, and 92 is a fuel inlet pipe.
【００２１】その他、本発明のホースは、上記しかつ図
面に示した例にのみ限定されるものではなく、例えば、
内ホース部２の材質が比較的硬質であり、係合筒部２５
の折り返し性が充分でない場合には、内ホース部２の弧
状部２１ｆあるいはこれに相当する部分に溝や孔等を形
成したり薄肉化したりし、係合筒部２５の折り返し性を
確保することもでき、また上記した各寸法は上記した値
に限定されるものではない等、要旨を逸脱しない範囲内
で必要に応じて適宜変更して実施し得るものである。In addition, the hose of the present invention is not limited to the examples described above and shown in the drawings.
The material of the inner hose portion 2 is relatively hard, and the engagement tube portion 25
When the foldability of the engaging tube portion 25 is not sufficient, the foldability of the engagement tubular portion 25 is ensured by forming grooves or holes in the arc-shaped portion 21f of the inner hose portion 2 or a portion corresponding to the arc-shaped portion 21f or thinning it. Further, the above-mentioned dimensions are not limited to the above-mentioned values, and may be appropriately changed and implemented within a range not departing from the gist.
【００２２】[0022]
【発明の効果】本発明に係るホースによれば、内ホース
部に連設した係合部は、外ホース部の第１の直筒部の軸
端側の外周面を覆って第１の直筒部に係合するため、内
ホース部の第２の直筒部と外ホース部の第１の直筒部と
の一体性は向上する。そのため組み付けの際において、
内ホース部の第２の直筒部と外ホース部の第１の直筒部
との一体挙動性が確保される。従って組み付け性の向上
が図られる。According to the hose of the present invention, the engaging portion connected to the inner hose portion covers the outer peripheral surface of the outer hose portion on the shaft end side of the first straight tubular portion, and the first straight tubular portion. , The second straight tubular portion of the inner hose portion and the first straight tubular portion of the outer hose portion are integrated with each other. Therefore, when assembling,
The integrated behavior of the second straight tubular portion of the inner hose portion and the first straight tubular portion of the outer hose portion is ensured. Therefore, the assemblability can be improved.
【図１】実施例に係るホースの上半分を断面にして示す
側面図である。FIG. 1 is a side view showing a cross section of an upper half of a hose according to an embodiment.
【図２】外ホース部の内部に内ホース部を配置した状態
の要部の断面図である。FIG. 2 is a cross-sectional view of a main part in a state where an inner hose portion is arranged inside an outer hose portion.
【図３】組付け前の状態における内ホース部の断面図で
ある。FIG. 3 is a cross-sectional view of an inner hose portion in a state before assembly.
【図４】組付け前の状態におけるシール部材の上半分を
断面にして示す側面図である。FIG. 4 is a side view showing a cross section of the upper half of the seal member before assembly.
【図５】適用例を示す斜視図である。FIG. 5 is a perspective view showing an application example.
図中、１は外ホース部、１０は第１の蛇腹筒部、１１は
第１の直筒部、２は内ホース部、２０は第２の蛇腹筒
部、２１は第２の直筒部、２１ｆは弧状部、２５は係合
筒部（係合部）、５はシール部材、５１は外シール部、
５２は内シール部、５３はシール溝を示す。In the figure, 1 is an outer hose portion, 10 is a first bellows tubular portion, 11 is a first straight tubular portion, 2 is an inner hose portion, 20 is a second bellows tubular portion, 21 is a second straight tubular portion, 21f. Is an arcuate portion, 25 is an engagement cylinder portion (engagement portion), 5 is a seal member, 51 is an outer seal portion,
Reference numeral 52 indicates an inner seal portion, and 53 indicates a seal groove.
Claims (1)
部に延設された第１の直筒部とをもつ、ゴムを基材とす
る外ホース部と、 該外ホース部内に略同軸的に配置され、第２の蛇腹筒部
と該第２の蛇腹筒部の両端部に延設されかつ該第１の直
筒部の内周面に対面する第２の直筒部とをもつ、樹脂を
基材とする内ホース部とを具備し、 該内ホース部の第２の直筒部の少なくとも一方は、 該一方に一体的に連設されかつ該外ホース部の第１の直
筒部の少なくとも軸端側の外周面を覆って該第１の直筒
部に係合する係合部をもつことを特徴とするホース。1. A rubber-based outer hose portion having a first bellows tube portion and first straight tube portions extending at both ends of the first bellows tube portion, and the outer hose. A second straight tube portion that is disposed substantially coaxially in the portion, extends to both ends of the second bellows tube portion, and that faces the inner peripheral surface of the first straight tube portion. And an inner hose portion made of a resin as a base material, wherein at least one of the second straight cylindrical portions of the inner hose portion is integrally connected to the one and the first hose portion of the outer hose portion. A hose having an engaging portion that covers at least the outer peripheral surface of the straight tubular portion on the axial end side and is engaged with the first straight tubular portion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5100748A JPH06307585A (en) | 1993-04-27 | 1993-04-27 | Hose |
| US08/538,802 US5829483A (en) | 1992-10-30 | 1995-10-03 | Hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5100748A JPH06307585A (en) | 1993-04-27 | 1993-04-27 | Hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06307585A true JPH06307585A (en) | 1994-11-01 |
Family
ID=14282160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5100748A Pending JPH06307585A (en) | 1992-10-30 | 1993-04-27 | Hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06307585A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478341B1 (en) | 1999-05-27 | 2002-11-12 | Tokai Rubber Industries, Ltd. | Tube clamping structure |
| JP2010001899A (en) * | 2008-06-18 | 2010-01-07 | Evuc Kk | Synthetic resin hose and its manufacturing method |
| CN102278564A (en) * | 2010-06-10 | 2011-12-14 | 株式会社东全 | Flexible pipe |
-
1993
- 1993-04-27 JP JP5100748A patent/JPH06307585A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6478341B1 (en) | 1999-05-27 | 2002-11-12 | Tokai Rubber Industries, Ltd. | Tube clamping structure |
| JP2010001899A (en) * | 2008-06-18 | 2010-01-07 | Evuc Kk | Synthetic resin hose and its manufacturing method |
| CN102278564A (en) * | 2010-06-10 | 2011-12-14 | 株式会社东全 | Flexible pipe |
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