JPH0612986Y2 - Automotive fuel supply pipe - Google Patents
Automotive fuel supply pipeInfo
- Publication number
- JPH0612986Y2 JPH0612986Y2 JP1987078518U JP7851887U JPH0612986Y2 JP H0612986 Y2 JPH0612986 Y2 JP H0612986Y2 JP 1987078518 U JP1987078518 U JP 1987078518U JP 7851887 U JP7851887 U JP 7851887U JP H0612986 Y2 JPH0612986 Y2 JP H0612986Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- supply pipe
- fuel supply
- hose
- bellows
- 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.)
- Expired - Lifetime
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Joints Allowing Movement (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、自動車において燃料を燃料タンクに供給する
燃料供給管に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a fuel supply pipe for supplying fuel to a fuel tank in an automobile.
［従来技術］ 上記燃料供給管として、取付誤差や振動を吸収するため
中間部に可撓性のホースを介在させたものが用いられて
いる（実開昭５６−２１２２１号）。そして更に供給燃
料を増速して注入性を向上させるために燃料供給管に燃
料供給方向に先細りのテーパ部を形成したものがある。
このテーパ部としては、燃料タンクへ貫入した先端部を
テーパ状としたもの、あるいは供給管の中間部にテーパ
部材を付設したものがある（実開昭６０−１２４３３１
号）。[Prior Art] As the above-mentioned fuel supply pipe, a pipe in which a flexible hose is interposed in the middle portion in order to absorb a mounting error and vibration is used (Japanese Utility Model Publication No. 56-21221). Further, there is a fuel supply pipe in which a tapered portion is formed in the fuel supply direction in order to further accelerate the supplied fuel and improve the injection property.
As this taper part, there is a taper part at the tip part penetrating into the fuel tank or a taper member provided in the middle part of the supply pipe (actually developed Japanese Utility Model Sho 60-124331).
issue).
更にまた第２図に示すように可撓性のホース５自体にテ
ーパ部５２を一体形成したものがある。即ち、一端が自
動車ボデーの給油口（図示略）に連通する第１の管３
と、一端が燃料タンク１に連通する第２の管４が蛇腹部
５１を有する可撓性のホース５で連結されており、ホー
ス５にはテーパ部５２が一体形成してある。なお、この
テーパ部５２は注入燃料を整流して蛇腹部５１による抵
抗を少なくし、かつ燃料満タン後の吹き返しによる燃料
逆流防止作用も果たす。Further, as shown in FIG. 2, there is a flexible hose 5 itself having a tapered portion 52 integrally formed. That is, the first pipe 3 whose one end communicates with the fuel filler port (not shown) of the automobile body
The second pipe 4 having one end communicating with the fuel tank 1 is connected by a flexible hose 5 having a bellows portion 51, and the hose 5 is integrally formed with a tapered portion 52. The tapered portion 52 rectifies the injected fuel to reduce the resistance of the bellows portion 51, and also serves to prevent the backflow of fuel due to the blowback after the fuel is full.
［本考案が解決しようとする問題点］ ところで上記従来技術において、燃料供給管の先端をテ
ーパ状とするものにおいては、加工性が悪く、かつ燃料
タンクへの取付性も悪いという問題がある。[Problems to be Solved by the Present Invention] Incidentally, in the above-mentioned conventional technique, in the case where the tip of the fuel supply pipe is tapered, there is a problem that workability is poor and mountability to the fuel tank is poor.
また、燃料供給管にテーパ部材を付設するものにおいて
は、テーパ部材を別に準備する必要があり、かつこれを
供給管に取付けなければならない煩わしさがある。Further, in the case where the fuel supply pipe is provided with the taper member, it is necessary to separately prepare the taper member, and it is troublesome to attach the taper member to the supply pipe.
また第２図に示すものにおいては、ホース５の成形性に
問題がある。即ち、このホース５をインジェクション成
形する場合、テーパ部５２の先端５２ａの前方にエア溜
りを設ける必要があり、従って先端５２ａの形状が一定
しないため成形後に所定形状に切削加工しなければなら
ない煩わしさがあるとともに、ホース５の本体とテーパ
部５２との分岐部の品質が不安定である。Further, in the structure shown in FIG. 2, there is a problem in the moldability of the hose 5. That is, when the hose 5 is injection-molded, it is necessary to provide an air reservoir in front of the tip 52a of the tapered portion 52. Therefore, since the shape of the tip 52a is not constant, it is necessary to cut the hose 5 into a predetermined shape after molding. In addition, the quality of the branch portion between the main body of the hose 5 and the tapered portion 52 is unstable.
そこで本考案は、蛇腹部を有する可撓性のホースを備え
た燃料供給管において、燃料の整流性および燃料吹き返
し防止作用にすぐれ、かつホースの成形性も容易な燃料
供給管を提供し、もって従来の問題点を解決することを
目的とするものである。Therefore, the present invention provides a fuel supply pipe provided with a flexible hose having a bellows portion, which is excellent in fuel rectification property and fuel blowback prevention action, and is easy in hose formability. It is intended to solve the conventional problems.
［問題点を解決するための手段］ 本考案は、第１図に示すように燃料供給管２に介在せし
める可撓性のホース５に蛇腹部５１を形成するととも
に、燃料供給方向に先細りとなり、内径を蛇腹部の内径
よりも小さくした先端が蛇腹部５１に接続するテーパ部
５２を形成したことを特徴とする。[Means for Solving the Problems] In the present invention, as shown in FIG. 1, a bellows portion 51 is formed in a flexible hose 5 which is interposed in a fuel supply pipe 2, and is tapered in the fuel supply direction. It is characterized in that a taper portion 52 having a tip whose inner diameter is smaller than that of the bellows portion is connected to the bellows portion 51 is formed.
［作用効果］ テーパ部５２により燃料は流速を増すとともに、矢印Ａ
で示すように供給管２の中心方向へ整流されるから、燃
料タンク１への燃料注入性は良好となる。またまた燃料
の吹き返しも矢印Ｂで示すように蛇腹壁５１１で阻止さ
れる。[Effect] The tapered portion 52 increases the flow velocity of the fuel, and the arrow A
Since the flow is rectified toward the center of the supply pipe 2 as shown by, the fuel injection property into the fuel tank 1 becomes good. Further, the blowback of the fuel is also blocked by the bellows wall 511 as shown by the arrow B.
［実施例］ 第１図に示す実施例において、第１の管３の一端は自動
車ボデーの給油口（図示略）に開口し、第２の管４の一
端は燃料タンク１に貫入してボルトにて固着せしめてあ
る。管３、４は金属製で相対向する他端は可撓性のゴム
ホース５により連結され、燃料供給管２を構成してい
る。ゴムホース５の両端はそれぞれ管３、４の他端に嵌
着せしめ、金属バンド６ａ、６ｂにより固定せしめてあ
る。[Embodiment] In the embodiment shown in FIG. 1, one end of the first pipe 3 is opened to an oil supply port (not shown) of an automobile body, and one end of the second pipe 4 is inserted into the fuel tank 1 to be bolted. It has been fixed at. The pipes 3 and 4 are made of metal, and the other ends facing each other are connected by a flexible rubber hose 5 to form a fuel supply pipe 2. Both ends of the rubber hose 5 are fitted to the other ends of the tubes 3 and 4, respectively, and fixed by metal bands 6a and 6b.
ゴムホース５はインジェクション成形品であって、中央
が蛇腹部５１としてあり、第１の管３と蛇腹部５１との
間の部分は燃料供給方向、即ち蛇腹部５１方向へ先細り
のテーパ部５２としてある。そしてテーパ部５２の先端
は径方向外方へ立上る蛇腹壁５１１に接続している。テ
ーパ部５２の先端の内径は蛇腹部５１の内径よりも小さ
くしてある。The rubber hose 5 is an injection molded product, and has a bellows portion 51 at the center, and a portion between the first pipe 3 and the bellows portion 51 has a taper portion 52 tapering in the fuel supply direction, that is, the bellows portion 51 direction. . The tip of the tapered portion 52 is connected to the bellows wall 511 that rises radially outward. The inner diameter of the tip of the tapered portion 52 is smaller than the inner diameter of the bellows portion 51.
しかして上記構成の燃料供給管において燃料は、インレ
ットガン７により第１の管３から供給される。この場
合、燃料はテーパ部５２により増速され、かつ、たとえ
ガン７が傾斜方向に挿入されてもテーパ部５２により矢
印Ａに示すように燃料は燃料供給管２の中心方向に整流
されて蛇腹部５１の抵抗を少なくし、スムースに燃料タ
ンク１に注入される。Thus, in the fuel supply pipe having the above structure, the fuel is supplied from the first pipe 3 by the inlet gun 7. In this case, the fuel is accelerated by the tapered portion 52, and even if the gun 7 is inserted in the inclined direction, the fuel is rectified in the central direction of the fuel supply pipe 2 by the tapered portion 52 as shown by the arrow A, and the bellows is formed. The resistance of the portion 51 is reduced and the fuel is smoothly injected into the fuel tank 1.
また、燃料満タン後の吹き返しは、矢印Ｂに示す蛇腹壁
５１１で阻止されることにより緩和される。Further, the blowback after the fuel is full is alleviated by being blocked by the bellows wall 511 shown by the arrow B.
更にまた、ゴムホース５は両端部、蛇腹部５１およびテ
ーパ部５２が一連となっているから、インジェクション
成形により安定した品質のものが作業性よく生産され
る。Furthermore, since the rubber hose 5 has a series of both end portions, the bellows portion 51 and the taper portion 52, a stable quality product can be produced by injection molding with good workability.
なお、テーパ部５２のテーパ角は燃料を整流し、かつ流
通を阻害しない角度が選ばれ、例えば第１の管３の内径
を５０mmとした場合、テーパ部長さ６０mm程度、先端内
径３０mm程度が適当である。The taper angle of the taper portion 52 is selected such that the fuel is rectified and the flow is not hindered. For example, when the inner diameter of the first tube 3 is 50 mm, the taper portion length is about 60 mm and the tip inner diameter is about 30 mm. Is.
第１図は本考案の一実施例を示す断面図、第２図は従来
例の断面図である。 １……燃料タンク ２……燃料供給管 ５……可撓性ホース ５１……蛇腹部 ５２……テーパ部FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional example. 1 ... Fuel tank 2 ... Fuel supply pipe 5 ... Flexible hose 51 ... Bellows portion 52 ... Tapered portion
Claims (1)
あって、供給管の中間部に、蛇腹部を有する可撓性のホ
ースを介在せしめたものにおいて、上記ホースに燃料供
給方向に先細りとなり、内径を蛇腹部の内径よりも小さ
くした先端が蛇腹部に接続するテーパ部を形成したこと
を特徴とする自動車用燃料供給管。1. A fuel supply pipe for supplying fuel to a fuel tank, wherein a flexible hose having a bellows portion is interposed in an intermediate portion of the supply pipe, wherein the hose is tapered in the fuel supply direction. A fuel supply pipe for an automobile, characterized in that a taper portion is formed whose tip has an inner diameter smaller than that of the bellows portion and is connected to the bellows portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987078518U JPH0612986Y2 (en) | 1987-05-25 | 1987-05-25 | Automotive fuel supply pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987078518U JPH0612986Y2 (en) | 1987-05-25 | 1987-05-25 | Automotive fuel supply pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63188224U JPS63188224U (en) | 1988-12-02 |
| JPH0612986Y2 true JPH0612986Y2 (en) | 1994-04-06 |
Family
ID=30927539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987078518U Expired - Lifetime JPH0612986Y2 (en) | 1987-05-25 | 1987-05-25 | Automotive fuel supply pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612986Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4499076B2 (en) * | 2006-06-01 | 2010-07-07 | 東海興業株式会社 | Injection connector and inlet structure of liquid container |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915700U (en) * | 1982-07-22 | 1984-01-30 | 愛知車輌株式会社 | Work vehicle operating device |
| JPS6137025U (en) * | 1984-08-09 | 1986-03-07 | マツダ株式会社 | fuel injection device |
-
1987
- 1987-05-25 JP JP1987078518U patent/JPH0612986Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63188224U (en) | 1988-12-02 |
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