JPH06219461A - Cap for fuel tank - Google Patents
Cap for fuel tankInfo
- Publication number
- JPH06219461A JPH06219461A JP5027206A JP2720693A JPH06219461A JP H06219461 A JPH06219461 A JP H06219461A JP 5027206 A JP5027206 A JP 5027206A JP 2720693 A JP2720693 A JP 2720693A JP H06219461 A JPH06219461 A JP H06219461A
- Authority
- JP
- Japan
- Prior art keywords
- inner lid
- lid
- fuel
- outer lid
- fuel tank
- 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
- 239000002828 fuel tank Substances 0.000 title claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 39
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000003566 sealing material Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Closures For Containers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料タンク用キャップ
に係り、特に、自動車の燃料タンクの給油口を閉塞する
キャップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank cap, and more particularly to a cap for closing a fuel filler port of an automobile fuel tank.
【０００２】[0002]
【従来の技術】自動車の燃料タンクの給油口を閉塞する
キャップには、燃料タンク内の圧力が上昇したり負圧と
なったりするのを防止するため、エアベント機構を備え
たものがある。2. Description of the Related Art Some caps for closing a fuel filler port of a fuel tank of an automobile are provided with an air vent mechanism in order to prevent the pressure in the fuel tank from rising or becoming negative.
【０００３】従来この種のキャップとしては、例えば外
蓋の内方に嵌着された内蓋が、燃料タンクに連設された
燃料供給管の開口端部内に嵌合される有底筒状の嵌合部
と、燃料供給管の開口端部内に嵌合される有底筒状の嵌
合部と、燃料供給管の開口縁部を受入れる環状溝状の受
入れ部と、装着時に燃料供給管の外方に位置する外周鍔
部とを備え、嵌合部の底壁部と外周鍔部とにガス抜き孔
を穿設することにより、両ガス抜き孔と、外蓋と内蓋と
の間の間隙とによりガス抜き用の通路を形成したものが
ある。Conventionally, as a cap of this type, for example, an inner lid fitted inside the outer lid is fitted into the open end of a fuel supply pipe connected to the fuel tank and has a bottomed cylindrical shape. The fitting portion, the cylindrical fitting portion having a bottom fitted in the opening end portion of the fuel supply pipe, the annular groove-shaped receiving portion for receiving the opening edge portion of the fuel supply pipe, and the An outer peripheral flange portion located on the outside is provided, and a gas vent hole is formed in the bottom wall portion and the outer peripheral flange portion of the fitting portion, so that both the gas vent holes and the outer lid and the inner lid are provided. There is one in which a passage for degassing is formed by the gap.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上述のような
単純な構造のものでは、底壁部に穿設したガス抜き孔か
ら、気化ガスと共に、燃料が漏れるおそれがある。ま
た、この問題を解決するために、底壁部のガス抜き孔部
分にキャップ内外の圧力差が一定値以上になると開弁す
るようにしたバルブを設けたものがあるが、コスト高に
なる等の問題点がある。However, in the case of the simple structure as described above, the fuel may leak together with the vaporized gas from the gas vent hole formed in the bottom wall portion. Further, in order to solve this problem, there is a gas vent hole portion of the bottom wall provided with a valve that opens when the pressure difference between the inside and outside of the cap exceeds a certain value, but the cost is high. There is a problem.
【０００５】本発明は、上記問題点を解消するためにな
されたもので、燃料タンク外部へ燃料が漏れるのを防止
した燃料タンク用キャップを提供することを目的とした
ものである。The present invention has been made to solve the above problems, and an object of the present invention is to provide a fuel tank cap in which fuel is prevented from leaking to the outside of the fuel tank.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、外蓋の内方に嵌着された内蓋が、燃料タ
ンクに連設された燃料供給管の開口端部内に嵌合される
有底筒状の嵌合部と、燃料供給管の開口縁部を受入れる
環状溝状の受入れ部と、装着時に燃料供給管の外方に位
置する外周鍔部とを備え、嵌合部の底壁部と外周鍔部と
にガス抜き孔を穿設することにより、両ガス抜き孔と、
外蓋と内蓋との間の間隙とによりガス抜き用の通路を形
成してなる燃料タンク用キャップにおいて、外蓋と内蓋
の受入れ部との間の間隙内に、外蓋側の凸部が内蓋外の
凹部に、かつ内蓋側の凸部が外蓋側の凹部にそれぞれ順
次嵌合することにより、前記ガス抜き用の通路の一部を
なす蛇行状通路を形成する凹凸部を形成したことを特徴
としたものである。In order to achieve the above object, the present invention provides an inner lid fitted inside an outer lid inside an open end of a fuel supply pipe connected to a fuel tank. A bottomed tubular fitting portion to be fitted, an annular groove-shaped receiving portion that receives the opening edge portion of the fuel supply pipe, and an outer peripheral flange portion that is located outside the fuel supply pipe when mounted, By forming gas vent holes in the bottom wall portion of the joint and the outer peripheral flange portion, both gas vent holes,
In a fuel tank cap in which a passage for degassing is formed by a gap between an outer lid and an inner lid, a convex portion on the outer lid side is provided in a gap between the receiving portion of the outer lid and the inner lid. Are sequentially fitted into the concave portion outside the inner lid, and the convex portion on the inner lid side is fitted into the concave portion on the outer lid side, respectively, to form an uneven portion forming a meandering passage forming a part of the gas vent passage. It is characterized by being formed.
【０００７】[0007]
【作用】外蓋と内蓋の受入れ部との間の間隙内に、外蓋
側の凸部が内蓋側の凹部に、かつ内蓋側の凸部が外蓋側
の凹部にそれぞれ順次嵌合することにより、前記ガス抜
き用の通路の一部をなす蛇行状通路を形成する凹凸部を
設けたことにより、気化ガスのみが燃料用キャップの外
部へ向かって、通路内を移動することができ、液体の燃
料は、この蛇行状通路によって外部へ向っての移動が阻
止されるので、燃料漏れのおそれを著しく低減すること
ができる。In the gap between the outer lid and the receiving portion of the inner lid, the convex portion on the outer lid side is fitted into the concave portion on the inner lid side, and the convex portion on the inner lid side is fitted into the concave portion on the outer lid side. Due to the provision of the concavo-convex portion that forms a meandering passage forming a part of the gas vent passage, only the vaporized gas can move in the passage toward the outside of the fuel cap. In addition, since the liquid fuel is prevented from moving outward by the meandering passage, the risk of fuel leakage can be significantly reduced.
【０００８】[0008]
【実施例】次に、本発明の一実施例を図面を参照して説
明する。図１中、(１)は燃料タンクであって、この燃料
タンク(１)の開口部(1a)には、耐燃料性に秀れ、かつ密
着性にまさる材質の円環形状のシール材(２)を介して、
燃料供給管(３)がねじ(４)により固着されている。An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, (1) is a fuel tank, and the opening (1a) of the fuel tank (1) has a ring-shaped sealing material (material excellent in fuel resistance and excellent in adhesion). Via 2)
The fuel supply pipe (3) is fixed by screws (4).
【０００９】(５)は、燃料供給管(３)の開口端部を閉塞
するキャップであって、内蓋(６)と外蓋(７)とにより構
成されている。(5) is a cap that closes the open end of the fuel supply pipe (3) and is composed of an inner lid (6) and an outer lid (7).
【００１０】内蓋(６)は、キャップ(５)装着時に、燃料
供給管(３)の開口端部に嵌合される有底筒状の嵌合部(6
a)と、同じく装着時に、燃料供給管(３)の開口縁部を受
け入れる環状溝状の受入れ部(6b)と、同じく装着時に、
燃料供給管(３)の外方に位置する外周鍔部(6c)とを備え
ている。The inner lid (6) is a bottomed tubular fitting portion (6) fitted to the open end of the fuel supply pipe (3) when the cap (5) is attached.
a), the annular groove-shaped receiving portion (6b) that receives the opening edge of the fuel supply pipe (3) at the time of mounting, and the same at the time of mounting
An outer peripheral collar portion (6c) located outside the fuel supply pipe (3) is provided.
【００１１】この内蓋(６)の外周鍔部(6c)が、外蓋(７)
の内面(7a)に一体的に設けられた環状の内向き突片(7b)
に係合することにより、内蓋(６)は外蓋(７)内に抜け止
めされて嵌着されている。The outer flange (6c) of the inner lid (6) is the outer lid (7).
An annular inward projecting piece (7b) integrally provided on the inner surface (7a) of the
By engaging with the inner lid (6), the inner lid (6) is fitted in the outer lid (7) so as not to come off.
【００１２】嵌合部(6a)の底壁部(6a')と外周鍔部(6c)
とには、円周方向に等間隔のそれぞれ３個ずつのガス抜
き孔(8)(8')が穿設され、この両ガス抜き孔(８)(8')及
び内蓋(６)と外壁(７)との間の間隙(９)とによりガス抜
き用の通路(Ａ)が形成されている。The bottom wall portion (6a ') of the fitting portion (6a) and the outer peripheral flange portion (6c)
And three gas vent holes (8) (8 ') are formed at equal intervals in the circumferential direction, and these gas vent holes (8) (8') and the inner lid (6) are A gap (9) between the outer wall (7) and the outer wall (7) forms a passage (A) for venting gas.
【００１３】図２に示すように、内蓋(６)の下面には、
３つの矩形の係止片(10)がほぼ120゜間隔で各々ねじ(1
1)によって固着されている。As shown in FIG. 2, on the lower surface of the inner lid (6),
The three rectangular locking pieces (10) are each screw (1
It is fixed by 1).
【００１４】この３つの係止片(10)を内蓋(６)に設けら
れた切欠き(12)に同時に嵌入した後、キャップ(５)全体
を所定方向に回転させることにより、係止片(10)が燃料
供給管(３)の内向折曲部(3a)の下縁に係止され、キャッ
プ(５)は燃料供給管(3)の開口端部に装着される。After the three locking pieces (10) are simultaneously fitted into the notches (12) provided in the inner lid (6), the entire cap (5) is rotated in a predetermined direction to thereby lock the locking pieces. (10) is locked to the lower edge of the inward bent portion (3a) of the fuel supply pipe (3), and the cap (5) is attached to the open end of the fuel supply pipe (3).
【００１５】なお、(13)は、円環形状のシール材であっ
て、予め受入れ部(6b)の下面に配設され、キャップ(５)
の閉塞時に、燃料供給管(３)の上端部に圧接することに
より、燃料供給管(３)とキャップ(５)との間隙をシール
する。Reference numeral (13) is a ring-shaped sealing material, which is disposed in advance on the lower surface of the receiving portion (6b) and has a cap (5).
When the fuel supply pipe (3) is closed, it is pressed against the upper end of the fuel supply pipe (3) to seal the gap between the fuel supply pipe (3) and the cap (5).
【００１６】(14)は、外周部が外蓋(７)と内蓋(６)との
間に挾設され、かつ中間部に、適所に、後述する蛇行状
通路(A')と内蓋(６)の嵌合部(6a)側のガス抜き孔(８)と
を連通する連通孔(8")が穿設された中間板である。The outer peripheral portion of (14) is sandwiched between the outer lid (7) and the inner lid (6), and the meandering passage (A ') and the inner lid, which will be described later, are provided at appropriate positions in the middle portion. The intermediate plate is provided with a communication hole (8 ") communicating with the gas vent hole (8) on the fitting portion (6a) side of (6).
【００１７】外蓋(７)と中間板(14)との間の間隙内(Ｂ)
には、外蓋(７)側の凸部(15a)が中間板(14)の凹部(16a)
に、かつ中間板(14)の凸部(16b)が外蓋(７)側の凹部(15
b)にそれぞれ順次嵌合することにより、ガス抜き用通絡
(Ａ)の一部をなし、外蓋(７)の中心より、放射状に延び
る蛇行状通路(A')を形成する櫛歯形状の凹凸部(15)(16)
が設けられている。この蛇行状通路(A')の上下巾及び左
右巾は、ガスは通過するが燃料は通過しにくい櫛歯形状
にする。In the gap (B) between the outer lid (7) and the intermediate plate (14)
The convex portion (15a) on the outer lid (7) side is the concave portion (16a) of the intermediate plate (14).
And the convex portion (16b) of the intermediate plate (14) is the concave portion (15) on the outer lid (7) side.
By sequentially fitting in b)
Comb-shaped uneven parts (15) (16) that form a part of (A) and form a meandering passage (A ') extending radially from the center of the outer lid (7).
Is provided. The vertical width and the horizontal width of the meandering passage (A ′) are comb-shaped so that gas can pass through but fuel cannot pass through easily.
【００１８】上記のように蛇行状通路(A')を形成する凹
凸部(15)(16)を設けたのでこの凹凸部(15)(16)によっ
て、空気及び気化ガスは外部へ向って蛇行状通路(A')内
を移動できるが、液体の燃料は移動が阻止される。Since the uneven portions (15) and (16) that form the meandering passage (A ') are provided as described above, the uneven portions (15) and (16) meander the air and the vaporized gas toward the outside. Although it can move in the channel (A '), liquid fuel is blocked from moving.
【００１９】したがって燃料漏れを起こすおそれがほと
んどない。なお、蛇行状通路(A')は、上記実施例に限ら
れず、外蓋(７)下面と中間板(14)との全周に設けてもよ
い。また、螺旋状のものでもよい。Therefore, there is almost no risk of fuel leakage. The meandering passage (A ') is not limited to the above embodiment, but may be provided on the entire circumference of the lower surface of the outer lid (7) and the intermediate plate (14). Also, a spiral shape may be used.
【００２０】[0020]
【発明の効果】本発明は、下記の効果を奏する。 (ａ) 外蓋と内蓋の受入れ部との間の間隙内に、外蓋側
の凸部が内蓋側の凹部に、かつ内蓋側の凸部が外蓋側の
凹部にそれぞれ順次嵌合することにより、前記ガス抜き
用の通路の一部をなす蛇行状通路を形成する凹凸部を設
けたことにより、気化ガスのみが燃料用キャップの外部
へ向って通路内を移動することができ、液体の燃料は、
この蛇行状通路によって、外部へ向っての移動が阻止さ
れるので、燃料漏れのおそれを著しく低減することがで
きる。The present invention has the following effects. (a) In the gap between the outer lid and the receiving portion of the inner lid, the convex portion on the outer lid side is fitted into the concave portion on the inner lid side, and the convex portion on the inner lid side is fitted into the concave portion on the outer lid side, respectively. Due to the provision of the concavo-convex portion which forms a meandering passage forming a part of the gas vent passage, only the vaporized gas can move inside the passage toward the outside of the fuel cap. , Liquid fuel,
This meandering passage prevents movement toward the outside, so that the risk of fuel leakage can be significantly reduced.
【図１】本発明の一実施例を示す縦断側面図である。FIG. 1 is a vertical side view showing an embodiment of the present invention.
【図２】II−II線に沿って見た底面図である。FIG. 2 is a bottom view taken along the line II-II.
(１)燃料タンク (1a)開口部 (２)シール材 (３)燃料供
給管 (3a)内向折曲部 (４)ねじ (５)キャップ (６)内蓋 (6a)嵌合部 (6a')底壁
部 (6b)受入れ部 (6c)外周鍔
部 (７)外蓋 (7a)内面 (7b)上向き突片 (８)(8')ガ
ス抜き孔 (8")連通孔 (９)間隙 (10)係止片 (11)ねじ (12)切欠き (13)シール
材 (14)中間板 (15)(16)凹
凸部 (15a)(16b)凸部 (15b)(16a)
凹部 (Ａ)通路 (A')蛇行状
通路 (Ｂ)間隙(1) Fuel tank (1a) Opening (2) Sealing material (3) Fuel supply pipe (3a) Inward bent part (4) Screw (5) Cap (6) Inner lid (6a) Fitting part (6a ' ) Bottom wall (6b) Receiving part (6c) Outer flange (7) Outer lid (7a) Inner surface (7b) Upward projecting piece (8) (8 ') Gas vent hole (8 ") Communication hole (9) Gap (10) Locking piece (11) Screw (12) Notch (13) Seal material (14) Intermediate plate (15) (16) Concavo-convex part (15a) (16b) Convex part (15b) (16a)
Recess (A) Passage (A ') Meandering Passage (B) Gap
Claims (3)
ンクに連設された燃料供給管の開口端部内に嵌合される
有底筒状の嵌合部と、燃料供給管の開口縁部を受入れる
環状溝状の受入れ部と、装着時に燃料供給管の外方に位
置する外周鍔部とを備え、嵌合部の底壁部と外周鍔部と
にガス抜き孔を穿設することにより、両ガス抜き孔と、
外蓋と内蓋との間の間隙とによりガス抜き用の通路を形
成してなる燃料タンク用キャップにおいて、外蓋と内蓋
の受入れ部との間の間隙内に、外蓋側の凸部が内蓋外の
凹部に、かつ内蓋側の凸部が外蓋側の凹部にそれぞれ順
次嵌合することにより、前記ガス抜き用の通路の一部を
なす蛇行状通路を形成する凹凸部を形成したことを特徴
とする燃料タンク用キャップ。1. A bottomed tubular fitting portion, in which an inner lid fitted inside the outer lid is fitted into an open end of a fuel supply pipe connected to a fuel tank, and a fuel supply. An annular groove-shaped receiving portion that receives the opening edge portion of the pipe and an outer peripheral flange portion that is located outside the fuel supply pipe when mounted is provided, and a gas vent hole is formed in the bottom wall portion and the outer peripheral flange portion of the fitting portion. By drilling, both gas vent holes,
In a fuel tank cap in which a passage for degassing is formed by a gap between an outer lid and an inner lid, a convex portion on the outer lid side is provided in a gap between the receiving portion of the outer lid and the inner lid. Are sequentially fitted into the concave portion outside the inner lid, and the convex portion on the inner lid side is fitted into the concave portion on the outer lid side, respectively, to form an uneven portion forming a meandering passage forming a part of the gas vent passage. A fuel tank cap characterized by being formed.
部を、一部が外蓋と内蓋との間に挾設され、かつ他部に
蛇行状通路と内蓋の嵌合部側のガス抜き孔とを連通する
連通孔が穿設された中間板に設けてなる請求項１記載の
燃料タンク用キャップ。2. The uneven portion on the inner lid side facing the uneven portion on the outer lid side is partially sandwiched between the outer lid and the inner lid, and the meandering passage and the inner lid are fitted to the other portion. The fuel tank cap according to claim 1, wherein the intermediate plate is provided with a communication hole that communicates with the gas vent hole on the joint portion side.
設けてなる請求項１又は２記載の燃料タンク用キャッ
プ。3. The fuel tank cap according to claim 1, wherein the meandering passage is provided radially from the center of the outer lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5027206A JPH0767949B2 (en) | 1993-01-25 | 1993-01-25 | Fuel tank cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5027206A JPH0767949B2 (en) | 1993-01-25 | 1993-01-25 | Fuel tank cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06219461A true JPH06219461A (en) | 1994-08-09 |
| JPH0767949B2 JPH0767949B2 (en) | 1995-07-26 |
Family
ID=12214632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5027206A Expired - Lifetime JPH0767949B2 (en) | 1993-01-25 | 1993-01-25 | Fuel tank cap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0767949B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010121472A (en) * | 2008-11-17 | 2010-06-03 | Yanmar Co Ltd | Fuel filter |
| US7823611B2 (en) | 2006-05-29 | 2010-11-02 | Masashi Iwami | Filler cap of fuel tank |
| JP2013163483A (en) * | 2012-02-13 | 2013-08-22 | Nifco Inc | Connector for fuel tank |
| US8657140B2 (en) | 2011-09-25 | 2014-02-25 | Masashi Iwami | Filler cap for fuel tank |
| US9610839B2 (en) | 2014-06-16 | 2017-04-04 | Masao Iwami | Filler cap for fuel tank |
| JP2018047761A (en) * | 2016-09-20 | 2018-03-29 | 政夫 岩見 | Valve body device of fuel tank |
| US10377230B2 (en) | 2015-12-14 | 2019-08-13 | Masao Iwami | Filler cap for fuel tank |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3019101U (en) * | 1995-06-08 | 1995-12-12 | 株式会社加島サドル製作所 | Belt for fixing shoes on racing bicycles |
-
1993
- 1993-01-25 JP JP5027206A patent/JPH0767949B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3019101U (en) * | 1995-06-08 | 1995-12-12 | 株式会社加島サドル製作所 | Belt for fixing shoes on racing bicycles |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7823611B2 (en) | 2006-05-29 | 2010-11-02 | Masashi Iwami | Filler cap of fuel tank |
| JP2010121472A (en) * | 2008-11-17 | 2010-06-03 | Yanmar Co Ltd | Fuel filter |
| US8657140B2 (en) | 2011-09-25 | 2014-02-25 | Masashi Iwami | Filler cap for fuel tank |
| JP2013163483A (en) * | 2012-02-13 | 2013-08-22 | Nifco Inc | Connector for fuel tank |
| US9610839B2 (en) | 2014-06-16 | 2017-04-04 | Masao Iwami | Filler cap for fuel tank |
| US10377230B2 (en) | 2015-12-14 | 2019-08-13 | Masao Iwami | Filler cap for fuel tank |
| US10723221B2 (en) | 2015-12-14 | 2020-07-28 | Masao Iwami | Filler cap for fuel tank |
| US10737570B2 (en) | 2015-12-14 | 2020-08-11 | Masao Iwami | Valve body device for fuel tank |
| JP2018047761A (en) * | 2016-09-20 | 2018-03-29 | 政夫 岩見 | Valve body device of fuel tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0767949B2 (en) | 1995-07-26 |
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