JP2003254185A - Piping structure for fuel - Google Patents
Piping structure for fuelInfo
- Publication number
- JP2003254185A JP2003254185A JP2002050325A JP2002050325A JP2003254185A JP 2003254185 A JP2003254185 A JP 2003254185A JP 2002050325 A JP2002050325 A JP 2002050325A JP 2002050325 A JP2002050325 A JP 2002050325A JP 2003254185 A JP2003254185 A JP 2003254185A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- fuel
- tube
- pipe
- metal pipe
- 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
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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/30—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
-
- 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/01—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
-
- 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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/18—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses characterised by the use of additional sealing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、樹脂被覆金属管と
導電性樹脂チューブとの接続部分の導電性を得るのに好
適な燃料用配管構造に関する。
【０００２】
【従来の技術】車両のエンジン側と燃料タンク側とを連
結する燃料用配管には、燃料が流れることによって静電
気が発生し、燃料用配管が帯電することが知られてい
る。燃料用配管が金属製パイプであれば、車体側にアー
スされて静電気は蓄積されない。しかし、耐久性を高め
るために、樹脂製チューブや、金属製パイプを樹脂で被
覆した樹脂被覆金属パイプを、燃料用配管の一部に使用
する場合には、帯電防止策を別途講じる必要がある。
【０００３】燃料用配管の帯電を防止するための技術と
して、例えば、特開平１１−２８０５８０号公報「自動
車用燃料配管系および該配管系に使用する部品」が提案
されている。
【０００４】上記公報の図１２には、金属管５−１（符
号については、同公報に記載されているものを使用し
た。以下同じ。）の外面に樹脂被覆層５−２を形成した
燃料パイプ５の端部の樹脂被覆層５−２を剥ぎ取って、
この端部に、導電性を有する樹脂チューブ６を被せて接
続することで、燃料パイプ５と樹脂チューブ６とを電気
的に導通させるようにした自動車用燃料配管が記載され
ている。
【０００５】また、同公報の図９には、継手本体７−１
内に導電カラー７−１４を圧接し、同じく継手本体７−
１内に挿入した燃料パイプ５の金属管５−１の内面を導
電カラー７−１４に当接させて燃料パイプ５と継手本体
７−１とを導通させる構造が記載されている。
【０００６】
【発明が解決しようとする課題】上記公報の図１２で
は、燃料パイプ５の端部の樹脂被覆層５−２を剥ぎ取っ
て樹脂チューブ６と接続するために、燃料パイプ５の外
面に追加工が必要になり、作業工数が多くなる。また、
同公報の図９では、導電カラー７−１４は燃料パイプ５
内に挿入させるために導電カラー７−１４で燃料通路が
狭くなる。これでは、燃料供給時の管路の抵抗が大きく
なるので、燃料ポンプの吐出性能を高める必要があり、
コストアップを招く。
【０００７】そこで、本発明の目的は、燃料用配管構造
を改良することで、金属製パイプの樹脂被膜を剥がすこ
とがなく、しかも燃料通路を狭めることもなく、樹脂被
覆金属管と導電性樹脂チューブとの接続部の電気的な導
通を容易に得ることにある。
【０００８】
【課題を解決するための手段】上記目的を達成するため
に請求項１は、燃料タンクとエンジンとを接続する燃料
用配管において、この燃料用配管を、金属管の外周に樹
脂膜を被せた樹脂被覆金属管と、この樹脂被覆金属管の
外面に嵌合させるとともに内径を樹脂被覆金属管の内径
とほぼ同一とした導電材キャップと、この導電材キャッ
プを含んだ状態で樹脂被覆金属管に一端を被せた導電性
樹脂チューブとから構成し、燃料を樹脂被覆金属管、導
電材キャップ及び導電性樹脂チューブの順又は逆順に流
すことができるとともに、導電材キャップを樹脂被覆金
属管の端面に接触させることで、樹脂被覆金属管と導電
性樹脂チューブとを電気的に導通させたことを特徴とす
る。
【０００９】導電材キャップを樹脂被覆金属管の端面に
接触させることにより、樹脂被覆金属管と導電性樹脂チ
ューブとの電気的な導通を得ることができるため、樹脂
被覆金属管の外面の樹脂被膜を剥がす必要がなく、作業
工数が増えることもない。また、導電性キャップの内径
を樹脂被覆金属管の内径とほぼ同ーにしたため、樹脂被
覆金属管と導電性樹脂チューブとの接続部で燃料通路を
狭めることがなく、燃料の供給量を維持することができ
る。
【００１０】
【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図１は本発明に係る燃料用配管構造を説明
する説明図であり、車両用の燃料タンク１１に燃料ポン
プ１２を取付け、一方、エンジン１３の吸気管１４に燃
料噴射弁１５を接続し、この燃料噴射弁１５にデリバリ
パイプ１６を接続し、上記した燃料ポンプ１２とデリバ
リパイプ１６とを燃料用配管１７で接続したことを示
す。
【００１１】燃料用配管１７は、燃料ポンプ１２の吐出
管１８及びデリバリパイプ１６の吸入管１９にそれぞれ
着脱可能に連結した導電性を有するクイックコネクタ２
１，２１と、これらのクイックコネクタ２１，２１のそ
れぞれに連結した導電性樹脂チューブとしての樹脂チュ
ーブ２２，２２と、これらの樹脂チューブ２２，２２同
士を連結する樹脂被覆金属管としての金属パイプ２３と
からなる。
【００１２】即ち、燃料用配管１７は、車両の床下を通
る金属パイプ２３の両端に樹脂チューブ２２，２２の一
端をそれぞれ直付けし、これらの樹脂チューブ２２，２
２の他端を、一方はデリバリパイプ１６に、他方は燃料
タンク１２に、それぞれクイックコネクタ２１を介して
結合した部品である。なお、２４は燃料噴射弁１５に供
給する燃料の圧力を調整するプレッシャレギュレータで
ある。
【００１３】図２は図１の２−２線断面図であり、金属
パイプ２３と樹脂チューブ２２との接続部の断面を示
す。金属パイプ２３は、塩害等から金属部を保護するた
めに外面に後述する樹脂被膜をコーティングした管であ
り、端部に膨出部２３ａ，２３ｂを成形したものであ
る。
【００１４】樹脂チューブ２２は、導電性を得るために
内面に後述する導電性層を形成したものであり、金属パ
イプ２３の先端外周面にＯリング２７及び導電材製の導
電材キャップとしてのキャップ２８を嵌めて、これらの
Ｏリング２７及びキャップ２８と共に金属パイプ２３に
圧入して被せた部品である。
【００１５】キャップ２８は、テーパ面２８ａを備えた
外面２８ｂ、大径穴２８ｃ、小径穴２８ｄ及びこれらの
大径穴２８ｃと小径穴２８ｄとを繋ぐ段部２８ｅを形成
した部品であり、段部２８ｅを金属パイプ２３の端面２
３ｃ（ここでいう端面２３ｃとは、金属が露出している
部分をいう。）に接触させ、外面２８ｂを樹脂チューブ
２２の内面２２ａに接触させることにより、金属パイプ
２３と樹脂チューブ２２とを電気的に導通させる。キャ
ップ２８の小径穴２８ｄは、内径をｄ１とした部分であ
る。
【００１６】キャップ２８としては、金属材料（例え
ば、アルミニウム合金、銅等）、樹脂材料（例えば、
ナイロン）に導電性材料（例えば、カーボン粉末、カー
ボンファイバー等）を混合したものが好適である。ま
た、キャップ２８は、Ｏリング２７を保持するための部
材でもある。
【００１７】図３は図２の３−３線断面図であり、金属
管としての管部３１の外面に樹脂被膜３２をコーティン
グした金属パイプ２３を示す。なお、２３ｄは管部３１
の内面である。
【００１８】樹脂被膜３２としては、例えばナイロン、
フッ素樹脂が好適である。金属パイプ２３の内面２３ｄ
の径、即ち金属パイプ２３の内径をｄ２としたときに、
金属パイプ２３の内径ｄ２と、図２に示したキャップ２
８の小径穴２８ｄの内径ｄ１とをほぼ同一とする。
【００１９】このように、小径穴２８ｄの内径ｄ１を金
属パイプ２３（図３参照）の内径ｄ２（図３参照）とほ
ぼ同一にすることで、金属パイプ２３と樹脂チューブ２
２との接続部の燃料の流通を抵抗なくスムーズに行うこ
とができる。なお、小径穴２８ｄの内径ｄ１を金属パイ
プ２３の内径ｄ２と同一にしても差し支えない。
【００２０】図４は図２の４−４線断面図であり、ナイ
ロン等の樹脂からなる管部３４の内面に、フッ素樹脂等
の樹脂からなる内層３５と、この内層３５の内面に導電
性樹脂で形成した導電性層３６とから構成した樹脂パイ
プ２２を示す。導電性層３６の導電性樹脂としては、例
えば、ナイロンにカーボン粉末、カーボンファイバー、
金属粉末を添加したものが好適である。
【００２１】図５は本発明に係る燃料用配管構造の作用
を説明する作用図である。燃料タンク１１から燃料用配
管１７を介してデリバリパイプ１６に燃料が流れると、
金属パイプ２３及び樹脂チューブ２２，２２に静電気が
発生する。
【００２２】本発明では、金属パイプ２３と樹脂チュー
ブ２２とを電気的に導通させる構造としたため、静電気
は、矢印に示すように、金属パイプ２３→樹脂チューブ
２２→クイックコネクタ２１→吸入管１９→デリバリパ
イプ１６→燃料噴射弁１５→吸気管１４→エンジン１３
の順に伝わってアースされるか、又は、金属パイプ２３
→樹脂チューブ２２→クイックコネクタ２１→吐出管１
８→燃料タンク１１→燃料タンク１１を取付けた車体側
部材（符号については、）の順に伝わって、アースされ
る。従って、金属パイプ２３の帯電による影響を無くす
ことができる。
【００２３】以上の図１、図２及び図３で説明したよう
に、本発明は、燃料タンク１１とエンジン１３とを接続
する燃料用配管１７において、この燃料用配管１７を、
管部３１の外周に樹脂被膜３２を被せた金属パイプ２３
と、この金属パイプ２３の外面に嵌合させるとともに内
径ｄ１を金属パイプ２３の内径ｄ２とほぼ同一としたキ
ャップ２８と、このキャップ２８を含んだ状態で金属パ
イプ２３に一端を被せた導電性を有する樹脂チューブ２
２とからなり、燃料を金属パイプ２３、キャップ２８及
び樹脂チューブ２２の順又は逆順に流すことができると
ともに、キャップ２８を金属パイプ２３の端面２３ｃに
接触させることで、金属パイプ２３と樹脂チューブ２２
とを電気的に導通させたことを特徴とする。
【００２４】キャップ２８を金属パイプ２３の端面２３
ｃに接触させることにより、金属パイプ２３と樹脂チュ
ーブ２２との電気的な導通を得ることができるため、金
属パイプ２３の外面の樹脂被膜３２を剥がす必要がな
く、作業工数が増えることがなくて、燃料用配管１７の
接続の作業時間を短縮することができる。また、キャッ
プ２８の内径ｄ１を金属パイプ２３の内径ｄ２とほぼ同
等にしたため、金属パイプ２３と樹脂チューブ２２との
接続部で燃料通路を狭めることがなく、燃料の供給量を
維持することができる。従って、燃料ポンプ１２の吐出
性能を高める等の必要がなく、コストアップを抑えるこ
とができる。
【００２５】また、金属パイプ２３と樹脂チューブ２２
との間に、シールのためのＯリング２７と、このＯリン
グ２７を保持するとともに金属パイプ２３の端面２３ｃ
に接触させ且つ樹脂チューブ２２の内面に接触するキャ
ップ２８とを介在させたので、Ｏリング２７を保持する
キャップ２８で導電部材を兼ねることができ、特別な部
品を追加することもなく部品数の増加を防止することが
でき、部品コストを抑えることができる。
【００２６】更に、本発明の燃料用配管構造では、樹脂
被覆付きの燃料用パイプを所定長さに切断するだけで外
面の追加工なしに使用することができるため、樹脂被覆
金属管に要するコストを低減することができる。
【００２７】尚、本発明では、燃料用配管構造に用いる
導電性樹脂チューブとして燃料タンク近傍及びキャブレ
タ近傍のものについて説明したが、これに限らず、導電
性樹脂チューブとしては燃料用配管の途中に用いるもの
であればよい。
【００２８】
【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項１の燃料用配管構造は、燃料用配管を、金
属管の外周に樹脂膜を被せた樹脂被覆金属管と、この樹
脂被覆金属管の外面に嵌合させるとともに内径を樹脂被
覆金属管の内径とほぼ同一とした導電材キャップと、こ
の導電材キャップを含んだ状態で樹脂被覆金属管に一端
を被せた導電性樹脂チューブとから構成し、燃料を樹脂
被覆金属管、導電材キャップ及び導電性樹脂チューブの
順又は逆順に流すことができるとともに、導電材キャッ
プを樹脂被覆金属管の端面に接触させることで、樹脂被
覆金属管と導電性樹脂チューブとを電気的に導通させた
ので、導電材キャップを樹脂被覆金属管の端面に接触さ
せることにより、樹脂被覆金属管と導電性樹脂チューブ
との電気的な導通を得ることができるため、樹脂被覆金
属管の外面の樹脂被膜を剥がす必要がなく、作業工数が
増えることもない。従って、燃料用配管の接続の作業時
間を短縮することができる。
【００２９】また、導電性キャップの内径を樹脂被覆金
属管の内径とほぼ同ーにしたため、樹脂被覆金属管と導
電性樹脂チューブとの接続部で燃料通路を狭めることが
なく、燃料の供給量を維持することができる。従って、
燃料ポンプの吐出性能を高める等の必要もなく、コスト
アップを抑えることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel piping structure suitable for obtaining conductivity at a connection portion between a resin-coated metal tube and a conductive resin tube. 2. Description of the Related Art It is known that static electricity is generated in a fuel pipe connecting the engine side and the fuel tank side of a vehicle by flowing fuel, and the fuel pipe is charged. If the fuel pipe is a metal pipe, it is grounded on the vehicle body side and no static electricity is accumulated. However, in order to increase the durability, when using a resin tube or a resin-coated metal pipe in which a metal pipe is coated with a resin for a part of a fuel pipe, it is necessary to separately take an antistatic measure. . [0003] As a technique for preventing electrification of a fuel pipe, for example, Japanese Patent Application Laid-Open No. H11-280580 entitled "Automobile fuel pipe system and parts used in the pipe system" has been proposed. FIG. 12 of the above publication discloses a fuel in which a resin coating layer 5-2 is formed on the outer surface of a metal tube 5-1 (the reference numeral used is that described in the publication; the same applies hereinafter). Peel off the resin coating layer 5-2 at the end of the pipe 5,
An automotive fuel pipe is described in which a resin tube 6 having conductivity is placed over and connected to the end to electrically connect the fuel pipe 5 and the resin tube 6. FIG. 9 of the publication discloses a joint body 7-1.
The conductive collar 7-14 is pressed into the inside, and the joint body 7-
A structure is described in which the inner surface of the metal pipe 5-1 of the fuel pipe 5 inserted into the fuel pipe 1 is brought into contact with the conductive collar 7-14 to conduct the fuel pipe 5 and the joint body 7-1. [0006] In FIG. 12 of the above publication, the outer surface of the fuel pipe 5 is used to peel off the resin coating layer 5-2 at the end of the fuel pipe 5 and connect it to the resin tube 6. Additional work is required, and the number of work steps is increased. Also,
In FIG. 9 of the publication, the conductive collar 7-14 is a fuel pipe 5
The fuel passage is narrowed by the conductive collar 7-14 for insertion therein. In this case, since the resistance of the pipeline at the time of fuel supply becomes large, it is necessary to improve the discharge performance of the fuel pump.
This leads to higher costs. Accordingly, an object of the present invention is to improve the fuel piping structure so that the resin coating of the metal pipe is not peeled off and the fuel passage is not narrowed. An object of the present invention is to easily obtain electrical continuity of a connection portion with a tube. [0008] In order to achieve the above object, a first aspect of the present invention is a fuel pipe connecting a fuel tank and an engine, wherein the fuel pipe is provided on the outer periphery of a metal pipe with a resin film. , A conductive material cap fitted to the outer surface of the resin-coated metal tube and having an inner diameter substantially equal to the inner diameter of the resin-coated metal tube, and a resin-coated metal tube including the conductive material cap. A conductive resin tube in which one end is covered by a metal tube, the fuel can flow in the order of the resin-coated metal tube, the conductive material cap and the conductive resin tube or in the reverse order, and the conductive material cap is formed by the resin-coated metal tube. Characterized in that the resin-coated metal tube and the conductive resin tube are electrically connected to each other by contacting the end surface. By bringing the conductive material cap into contact with the end surface of the resin-coated metal tube, electrical conduction between the resin-coated metal tube and the conductive resin tube can be obtained. It is not necessary to peel off, and the number of work steps does not increase. Further, since the inner diameter of the conductive cap is substantially the same as the inner diameter of the resin-coated metal tube, the fuel supply path is maintained without narrowing the fuel passage at the connection between the resin-coated metal tube and the conductive resin tube. be able to. Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an explanatory view for explaining a fuel piping structure according to the present invention. A fuel pump 12 is attached to a fuel tank 11 for a vehicle, and a fuel injection valve 15 is connected to an intake pipe 14 of an engine 13. This shows that the delivery pipe 16 is connected to the fuel injection valve 15, and the fuel pump 12 and the delivery pipe 16 are connected by the fuel pipe 17. The fuel pipe 17 has a conductive quick connector 2 detachably connected to a discharge pipe 18 of the fuel pump 12 and a suction pipe 19 of the delivery pipe 16.
1, 21; resin tubes 22, 22 as conductive resin tubes connected to the respective quick connectors 21; 21; and metal pipes 23 as resin-coated metal tubes connecting the resin tubes 22, 22 to each other. Consists of That is, the fuel pipes 17 are formed by directly attaching one ends of resin tubes 22, 22 to both ends of a metal pipe 23 passing under the floor of a vehicle, respectively.
The other end of 2 is a part connected to the delivery pipe 16 and the other to the fuel tank 12 via the quick connector 21. Reference numeral 24 denotes a pressure regulator for adjusting the pressure of the fuel supplied to the fuel injection valve 15. FIG. 2 is a sectional view taken along the line 2-2 of FIG. 1, and shows a section of a connecting portion between the metal pipe 23 and the resin tube 22. The metal pipe 23 is a pipe whose outer surface is coated with a resin film described later in order to protect the metal part from salt damage or the like, and has bulging parts 23a and 23b formed at the ends. The resin tube 22 has a conductive layer, which will be described later, formed on the inner surface to obtain conductivity. An O-ring 27 and a cap as a conductive material cap made of a conductive material are formed on the outer peripheral surface of the tip of the metal pipe 23. 28 is a part that is press-fitted into the metal pipe 23 together with the O-ring 27 and the cap 28. The cap 28 is a component formed with an outer surface 28b having a tapered surface 28a, a large-diameter hole 28c, a small-diameter hole 28d, and a step 28e connecting the large-diameter hole 28c and the small-diameter hole 28d. 28e is the end face 2 of the metal pipe 23
3c (here, the end face 23c means a portion where the metal is exposed), and the outer surface 28b is brought into contact with the inner surface 22a of the resin tube 22, so that the metal pipe 23 and the resin tube 22 are electrically connected. Electrical conduction. The small-diameter hole 28d of the cap 28 is a portion whose inner diameter is d1. As the cap 28, a metal material (for example, aluminum alloy, copper, etc.), a resin material (for example,
A material obtained by mixing a conductive material (for example, carbon powder, carbon fiber, or the like) with nylon) is preferable. The cap 28 is also a member for holding the O-ring 27. FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, and shows a metal pipe 23 in which a resin film 32 is coated on the outer surface of a tube portion 31 as a metal tube. 23d is the tube part 31
Inside. As the resin film 32, for example, nylon,
Fluororesins are preferred. Inner surface 23d of metal pipe 23
When the diameter of the metal pipe 23 is d2,
The inner diameter d2 of the metal pipe 23 and the cap 2 shown in FIG.
The small diameter hole 28d of FIG. As described above, by making the inner diameter d1 of the small diameter hole 28d substantially the same as the inner diameter d2 (see FIG. 3) of the metal pipe 23 (see FIG. 3), the metal pipe 23 and the resin tube 2 are formed.
The fuel can be smoothly flown at the connection with the fuel cell 2 without resistance. The inner diameter d1 of the small diameter hole 28d may be the same as the inner diameter d2 of the metal pipe 23. FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG. 2, in which an inner layer 35 made of a resin such as fluororesin and an inner layer 35 made of a resin 5 shows a resin pipe 22 composed of a conductive layer 36 formed of a resin. As the conductive resin of the conductive layer 36, for example, carbon powder, carbon fiber, nylon,
It is preferable to add a metal powder. FIG. 5 is an operation diagram for explaining the operation of the fuel piping structure according to the present invention. When fuel flows from the fuel tank 11 to the delivery pipe 16 via the fuel pipe 17,
Static electricity is generated in the metal pipe 23 and the resin tubes 22, 22. In the present invention, since the metal pipe 23 and the resin tube 22 are electrically connected to each other, static electricity is dissipated from the metal pipe 23 to the resin tube 22 to the quick connector 21 to the suction pipe 19 as shown by the arrow. Delivery pipe 16 → Fuel injection valve 15 → Intake pipe 14 → Engine 13
To the ground or the metal pipe 23
→ Resin tube 22 → Quick connector 21 → Discharge tube 1
8 → the fuel tank 11 → the vehicle body side member (the reference numeral is attached) to which the fuel tank 11 is attached, and grounded. Therefore, the influence of the charging of the metal pipe 23 can be eliminated. As described above with reference to FIGS. 1, 2 and 3, in the present invention, in the fuel pipe 17 connecting the fuel tank 11 and the engine 13, this fuel pipe 17 is
Metal pipe 23 in which resin film 32 is covered on the outer periphery of tube portion 31
A cap 28 fitted to the outer surface of the metal pipe 23 and having an inner diameter d1 substantially equal to the inner diameter d2 of the metal pipe 23, and a conductive member having one end covered by the metal pipe 23 with the cap 28 included. Resin tube 2 having
2, the fuel can flow in the order of the metal pipe 23, the cap 28 and the resin tube 22 or in the reverse order, and the metal pipe 23 and the resin tube 22
Are electrically connected to each other. The cap 28 is connected to the end face 23 of the metal pipe 23.
By contacting the metal pipe 23 with the metal pipe 23, electrical conduction between the metal pipe 23 and the resin tube 22 can be obtained. Therefore, it is not necessary to peel off the resin coating 32 on the outer surface of the metal pipe 23, and the number of working steps does not increase. In addition, the operation time for connecting the fuel pipe 17 can be reduced. Further, since the inner diameter d1 of the cap 28 is substantially equal to the inner diameter d2 of the metal pipe 23, the fuel supply amount can be maintained without narrowing the fuel passage at the connection between the metal pipe 23 and the resin tube 22. . Accordingly, there is no need to increase the discharge performance of the fuel pump 12, and the cost can be suppressed. The metal pipe 23 and the resin tube 22
, An O-ring 27 for sealing, and an O-ring 27 for holding the O-ring 27 and an end face 23 c of the metal pipe 23.
And the cap 28 that contacts the inner surface of the resin tube 22 is interposed, so that the cap 28 that holds the O-ring 27 can also serve as a conductive member, and the number of components can be reduced without adding special components. The increase can be prevented, and the cost of parts can be suppressed. Furthermore, in the fuel pipe structure of the present invention, the fuel pipe with resin coating can be used without cutting the outer surface only by cutting it to a predetermined length. Can be reduced. In the present invention, the conductive resin tube used in the fuel piping structure has been described in the vicinity of the fuel tank and the carburetor. However, the present invention is not limited to this. What is necessary is just to use. According to the present invention, the following effects are exhibited by the above configuration. According to the fuel pipe structure of the first aspect, the fuel pipe is fitted to a resin-coated metal pipe in which a resin film is covered on the outer circumference of a metal pipe, and the inner diameter of the resin-coated metal pipe is fitted to the resin-coated metal pipe. It is composed of a conductive material cap having substantially the same inner diameter, and a conductive resin tube in which one end is covered on a resin-coated metal tube in a state including the conductive material cap, and the fuel is coated with the resin-coated metal tube, the conductive material cap and the conductive material. The resin-coated metal tube and the conductive resin tube are electrically connected to each other by bringing the conductive material cap into contact with the end surface of the resin-coated metal tube. By bringing the material cap into contact with the end surface of the resin-coated metal tube, electrical conduction between the resin-coated metal tube and the conductive resin tube can be obtained. Gas is not necessary, that there is no also to increase work effort. Therefore, the work time for connecting the fuel pipe can be reduced. Further, since the inner diameter of the conductive cap is substantially the same as the inner diameter of the resin-coated metal tube, the fuel passage is not narrowed at the connection portion between the resin-coated metal tube and the conductive resin tube, and the fuel supply amount is reduced. Can be maintained. Therefore,
There is no need to increase the discharge performance of the fuel pump, and the cost can be suppressed.
【図面の簡単な説明】
【図１】本発明に係る燃料用配管構造を説明する説明図
【図２】図１の２−２線断面図
【図３】図２の３−３線断面図
【図４】図２の４−４線断面図
【図５】本発明に係る燃料用配管構造の作用を説明する
作用図
【符号の説明】
１１…燃料タンク、１３…エンジン、１７…燃料用配
管、２２…導電性樹脂チューブ（樹脂チューブ）、２３
…樹脂被覆金属管（金属パイプ）、２３ｃ…樹脂被覆金
属管の端面、２３ｄ…樹脂被覆金属管の内面、２８…導
電材キャップ（キャップ）、３１…金属管（管部）、３
２…樹脂被膜、ｄ１…導電材キャップの内径、ｄ２…樹
脂被覆金属管の内径。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view illustrating a fuel piping structure according to the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. 1 FIG. 3 is a sectional view taken along line 3-3 of FIG. 4 is a sectional view taken along the line 4-4 in FIG. 2; FIG. 5 is an operation diagram for explaining the operation of the fuel piping structure according to the present invention. [Description of References] 11: fuel tank, 13: engine, 17: fuel Piping, 22 ... conductive resin tube (resin tube), 23
... resin-coated metal tube (metal pipe), 23c ... end surface of resin-coated metal tube, 23d ... inner surface of resin-coated metal tube, 28 ... conductive material cap (cap), 31 ... metal tube (tube portion), 3
2 ... resin coating, d1 ... inner diameter of conductive material cap, d2 ... inner diameter of resin-coated metal tube.
Claims (1)
用配管において、 この燃料用配管は、金属管の外周に樹脂膜を被せた樹脂
被覆金属管と、この樹脂被覆金属管の外面に嵌合させる
とともに内径を樹脂被覆金属管の内径とほぼ同一とした
導電材キャップと、この導電材キャップを含んだ状態で
樹脂被覆金属管に一端を被せた導電性樹脂チューブとか
らなり、燃料を樹脂被覆金属管、導電材キャップ及び導
電性樹脂チューブの順又は逆順に流すことができるとと
もに、前記導電材キャップを樹脂被覆金属管の端面に接
触させることで、樹脂被覆金属管と導電性樹脂チューブ
とを電気的に導通させたことを特徴とする燃料用配管構
造。Claims: 1. A fuel pipe for connecting a fuel tank and an engine, wherein the fuel pipe includes a resin-coated metal pipe having a metal film covered with a resin film on an outer periphery thereof, and a resin-coated metal pipe. A conductive material cap fitted to the outer surface of the tube and having an inner diameter substantially the same as the inner diameter of the resin-coated metal tube, and a conductive resin tube having one end covered by the resin-coated metal tube with the conductive material cap included. In addition, the fuel can be flowed in the order of the resin-coated metal tube, the conductive material cap and the conductive resin tube or in the reverse order, and by contacting the conductive material cap with the end surface of the resin-coated metal tube, A fuel piping structure, which is electrically connected to a conductive resin tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002050325A JP3964697B2 (en) | 2002-02-26 | 2002-02-26 | Fuel piping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002050325A JP3964697B2 (en) | 2002-02-26 | 2002-02-26 | Fuel piping structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003254185A true JP2003254185A (en) | 2003-09-10 |
| JP3964697B2 JP3964697B2 (en) | 2007-08-22 |
Family
ID=28662603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002050325A Expired - Fee Related JP3964697B2 (en) | 2002-02-26 | 2002-02-26 | Fuel piping structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3964697B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004090407A1 (en) * | 2003-04-08 | 2004-10-21 | Sanoh Industrial Co., Ltd. | Tube connection structure |
| JP2006090416A (en) * | 2004-09-24 | 2006-04-06 | Nitta Moore Co | Resin pipe connection structure |
| DE102006015368A1 (en) * | 2006-04-03 | 2007-10-11 | Veritas Ag | Pipeline for use in motor vehicle, has insert unit connectable with pipeline, such that walls of pipeline and unit form channel in mounted condition, and retaining section of unit and attachment section together form accommodation device |
| JP2008248719A (en) * | 2007-03-29 | 2008-10-16 | Honda Motor Co Ltd | Fuel supply device for small vehicle |
| WO2014008318A1 (en) * | 2012-07-02 | 2014-01-09 | Norma U.S. Holding Llc | Fuel line connector and method of making |
-
2002
- 2002-02-26 JP JP2002050325A patent/JP3964697B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004090407A1 (en) * | 2003-04-08 | 2004-10-21 | Sanoh Industrial Co., Ltd. | Tube connection structure |
| CN100366974C (en) * | 2003-04-08 | 2008-02-06 | 三樱工业株式会社 | Tube connection structure. |
| US7452004B2 (en) | 2003-04-08 | 2008-11-18 | Sanoh Industrial Co., Ltd. | Pipe connecting structure |
| JP2006090416A (en) * | 2004-09-24 | 2006-04-06 | Nitta Moore Co | Resin pipe connection structure |
| DE102006015368A1 (en) * | 2006-04-03 | 2007-10-11 | Veritas Ag | Pipeline for use in motor vehicle, has insert unit connectable with pipeline, such that walls of pipeline and unit form channel in mounted condition, and retaining section of unit and attachment section together form accommodation device |
| JP2008248719A (en) * | 2007-03-29 | 2008-10-16 | Honda Motor Co Ltd | Fuel supply device for small vehicle |
| WO2014008318A1 (en) * | 2012-07-02 | 2014-01-09 | Norma U.S. Holding Llc | Fuel line connector and method of making |
| US9651180B2 (en) | 2012-07-02 | 2017-05-16 | Norma U.S. Holding Llc | Fuel line connector and method of making |
| US10591099B2 (en) | 2012-07-02 | 2020-03-17 | Norma U.S. Holding Llc | Fuel line connector and method of making |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3964697B2 (en) | 2007-08-22 |
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