JP2002144894A - Filler cap sealing structure - Google Patents

Filler cap sealing structure

Info

Publication number
JP2002144894A
JP2002144894A JP2000337789A JP2000337789A JP2002144894A JP 2002144894 A JP2002144894 A JP 2002144894A JP 2000337789 A JP2000337789 A JP 2000337789A JP 2000337789 A JP2000337789 A JP 2000337789A JP 2002144894 A JP2002144894 A JP 2002144894A
Authority
JP
Japan
Prior art keywords
seal member
fuel
filler
fuel vapor
filler cap
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
JP2000337789A
Other languages
Japanese (ja)
Inventor
Toshiaki Ichitani
寿章 市谷
Shigetoshi Muramatsu
成利 村松
Ryuji Fujino
竜二 藤野
Makoto Kobayashi
誠 小林
Yoshihiro Shimizu
良浩 清水
Takeshi Suzuki
武 鈴木
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2000337789A priority Critical patent/JP2002144894A/en
Publication of JP2002144894A publication Critical patent/JP2002144894A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a filler cap sealing structure for blocking a filler port of a filler tube for a fuel tank with a filler cap, compatibly preventing the permeation of a fuel vapor at a high temperature and the leak of the fuel at a low temperature. SOLUTION: A first seal member S1 out of first and second seal members S1, S2 provided in the filler cap 13 has higher permeation preventing performance for the fuel vapor at a high temperature than the second seal member S2. Therefore, even at the high temperature where the fuel vapor is easily permeable, the permeation of the fuel vapor is prevented by the first seal member S1. The second seal member S2 has higher leak preventing performance for the fuel at a low temperature than the first seal member S1. Therefore, even at the low temperature where the seal member is easily lower in elasticity, the leak of the fuel is prevented by the second seal member S2. As a result, the permeation of the fuel vapor at the high temperature and the leak of the fuel at the low temperature can be compatibly prevented.

Description

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

【発明の属する技術分野】本発明は、燃料タンクのフィ
ラーチューブの給油口を閉塞するフィラーキャップのシ
ール構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filler cap sealing structure for closing a filler port of a filler tube of a fuel tank.

【従来の技術】自動車用の燃料タンクはタンク本体から
上方に立ち上がるフィラーチューブの上端に給油ガンか
ら燃料を供給する給油口を備えており、この給油口はフ
ィラーキャップで開閉自在に閉塞される。フィラーチュ
ーブの給油口とフィラーキャップとの隙間から燃料蒸気
が大気中に拡散するのを防止すべく、フィラーキャップ
にゴム製のシール部材が設けられる(例えば、特開平1
0−129280号公報参照)。
2. Description of the Related Art A fuel tank for an automobile is provided with a filler port for supplying fuel from a filler gun at an upper end of a filler tube rising upward from a tank body, and the filler port is closed and opened by a filler cap. A rubber seal member is provided on the filler cap to prevent the fuel vapor from diffusing into the atmosphere from the gap between the filler port of the filler tube and the filler cap (see, for example,
0-129280).

【発明が解決しようとする課題】ところで、フィラーキ
ャップのシール部材に要求される性質には、 高温時にも燃料蒸気が透過し難いこと 低温時にも弾力性を失わずに燃料のシール性を確保で
きること がある。しかしながら、現在のところ上記,の性質
を兼ね備えたシール部材の材料は知られておらず、上記
の性質を満たす材料を選択すると、高温時に燃料蒸気
の透過を抑えることができても、低温時にシール性が低
下して燃料の漏洩が発生する問題がある。また上記の
性質を満たす材料を選択すると、低温時にシール性を確
保して燃料の漏洩を防止することができても、高温時に
燃料蒸気の透過量が増加する問題がある。本発明は前述
の事情に鑑みてなされたもので、高温時における燃料蒸
気の透過防止と低温時における燃料の漏洩防止とを両立
させ得るフィラーキャップのシール構造を提供すること
を目的とする。
By the way, the properties required for the sealing member of the filler cap include that it is difficult for fuel vapor to permeate even at a high temperature, and that the sealing property of the fuel can be secured without losing elasticity even at a low temperature. There is. However, at present, a material for the sealing member having the above properties is not known, and if a material satisfying the above properties is selected, even if the permeation of fuel vapor can be suppressed at a high temperature, the sealing at a low temperature can be suppressed. There is a problem in that the fuel leaks due to a decrease in fuel efficiency. Further, when a material satisfying the above properties is selected, there is a problem that the amount of fuel vapor permeated at a high temperature increases even if the sealing property can be secured at a low temperature to prevent fuel leakage. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a seal structure of a filler cap that can prevent both permeation of fuel vapor at high temperatures and prevention of fuel leakage at low temperatures.

【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に記載された発明によれば、燃料タンクの
フィラーチューブの給油口を閉塞するフィラーキャップ
のシール構造において、フィラーキャップに第1シール
部材および第2シール部材を設け、第1シール部材は第
2シール部材よりも高温時の燃料蒸気の透過防止性能が
高く、かつ第2シール部材は第1シール部材よりも低温
時の燃料の漏洩防止性能が高いことを特徴とするフィラ
ーキャップのシール構造が提案される。上記構成によれ
ば、フィラーキャップに設けた第1シール部材および第
2シール部材のうち、第1シール部材は第2シール部材
よりも高温時の燃料蒸気の透過防止性能が高いので、燃
料蒸気が透過し易い高温時においても、第1シール部材
で燃料蒸気の透過を抑制することができ、しかも第2シ
ール部材は第1シール部材よりも低温時の燃料の漏洩防
止性能が高いので、シール部材の弾力性が低下し易い低
温時においても、第2シール部材で燃料の漏洩を防止す
ることができる。従って、高温時における燃料蒸気の透
過防止と低温時における燃料の漏洩防止とを両立させる
ことが可能となる。また請求項2に記載された発明によ
れば、請求項1の構成に加えて、第1シール部材を第2
シール部材よりもフィラーチューブの給油口の開口端側
に配置したことを特徴とするフィラーキャップのシール
構造が提案される。上記構成によれば、第1シール部材
を第2シール部材よりもフィラーチューブの給油口の開
口端側に配置したので、高温時に第2シール部材を透過
して第1シール部材との間に浸入した燃料蒸気は、第2
シール部材を逆方向に透過して燃料タンク側に戻ること
ができ、第1シール部材を通過して大気に拡散する燃料
蒸気の量は極僅かなものとなる。それに対して、第1シ
ール部材および第2シール部材の位置関係を上記と逆に
すると、低温時に第1シール部材から漏洩して第2シー
ル部材との間に浸入した燃料は、第1シール部材を逆方
向に漏洩して燃料タンク側に戻ることができないため、
いずれは第2シール部材から漏洩して大気に拡散してし
まう。従って、第1シール部材および第2シール部材を
本発明の如く配置することにより、燃料蒸気の大気への
拡散量を更に減少させることができる。
According to the first aspect of the present invention, there is provided a filler cap sealing structure for closing a filler port of a filler tube of a fuel tank. A first seal member and a second seal member are provided. The first seal member has a higher performance of preventing fuel vapor permeation at a high temperature than the second seal member, and the second seal member has a lower temperature at a lower temperature than the first seal member. There has been proposed a filler cap sealing structure characterized by high fuel leakage prevention performance. According to the above configuration, of the first seal member and the second seal member provided on the filler cap, the first seal member has a higher performance of preventing fuel vapor permeation at a higher temperature than the second seal member. Even at a high temperature at which the fuel gas easily permeates, the first seal member can suppress the permeation of fuel vapor, and the second seal member has a higher fuel leakage prevention performance at a low temperature than the first seal member. Even at a low temperature at which the elasticity of the fuel cell tends to decrease, fuel leakage can be prevented by the second seal member. Therefore, it is possible to achieve both prevention of fuel vapor permeation at high temperatures and prevention of fuel leakage at low temperatures. According to the second aspect of the invention, in addition to the configuration of the first aspect, the first seal member is provided with the second seal.
There is proposed a seal structure for a filler cap, wherein the seal structure is disposed closer to the opening end of the filler port of the filler tube than the seal member. According to the above configuration, since the first seal member is disposed closer to the opening end of the filler port of the filler tube than the second seal member, the first seal member penetrates through the second seal member at a high temperature and penetrates between the first seal member and the first seal member. Fuel vapor is
The fuel can pass through the seal member in the reverse direction and return to the fuel tank side, and the amount of the fuel vapor that passes through the first seal member and diffuses into the atmosphere becomes very small. On the other hand, if the positional relationship between the first seal member and the second seal member is reversed, the fuel that leaks from the first seal member at a low temperature and enters the space between the first seal member and the second seal member will be removed by the first seal member. Leaks in the opposite direction and cannot return to the fuel tank side.
Eventually, it leaks from the second seal member and diffuses into the atmosphere. Therefore, by disposing the first seal member and the second seal member as in the present invention, it is possible to further reduce the diffusion amount of the fuel vapor into the atmosphere.

【発明の実施の形態】以下、本発明の実施の形態を、添
付図面に示した本発明の実施例に基づいて説明する。図
1〜図3は本発明の第1実施例を示すもので、図1はフ
ィラーパイプの給油口およびフィラーキャップの縦断面
図、図2は温度に対するシール部材の燃料洩れ量の変化
を示すグラフ、図3は温度に対するシール部材の燃料蒸
気透過量を示すグラフである。図1に示すように、自動
車用の燃料タンクのタンク本体から上方に立ち上がるフ
ィラーチューブ11の上端に給油口12が設けられてお
り、この給油口12は着脱自在なフィラーキャップ13
により閉塞される。フィラーチューブ11の給油口12
の内周面に突出するように形成された雌ねじ12aに、
フィラーキャップ13の本体部14の外周面に形成した
雄ねじ14aが螺合することにより、フィラーキャップ
13が給油口12に固定される。フィラーキャップ13
の本体部14から半径方向外向きに断面L字状の鍔部1
5が突出しており、この鍔部15の下面に、給油口12
の開口端を外向きに折り曲げたフランジ12bの上面に
当接可能な環状の第1シール部材S1が装着される。ま
たフィラーキャップ13の本体部14における雄ねじ1
4aの上方にシール部材保持溝14bが形成されてお
り、このシール部材保持溝14bに嵌合する環状の第2
シール部材S2が給油口12の内周面に当接する。本実
施例において、第1シール部材S1は、フッ化ビニリデ
ンの重合体よりなるフッ素ゴムで構成され、また第2シ
ール部材S2は、ブタジエンと、水素化ブタジエンと、
アクリロニトリルとの重合体よりなる水素化ニトリルゴ
ムで構成される。図2はシール部材を通しての燃料洩れ
量を示すグラフであって、特に0℃以下の低温時におけ
る燃料洩れ量は、第2シール部材S2の方が第1シール
部材S1に比べて大幅に少なくなっている。図3はシー
ル部材を通しての燃料蒸気透過量を示すグラフであっ
て、特に0℃以上の高温時における燃料蒸気透過量は、
第1シール部材S1の方が第2シール部材S2に比べて
大幅に少なくなっている。而して、第1、第2シール部
材S1,S2を通しての燃料洩れ量が小さい高温時(図
2参照)においては、図3に示すようにタンク本体に近
い第2シール部材S2を通しての燃料蒸気透過量が大き
くなるが、タンク本体から遠い第1シール部材S1を通
しての燃料蒸気透過量が小さいため、その第1シール部
材S1の作用で燃料蒸気の大気拡散を効果的に防止する
ことができる。また第1、第2シール部材S1,S2を
通しての燃料蒸気透過量が小さい低温時(図2参照)に
おいては、図2に示すようにタンク本体から遠い第1シ
ール部材S1を通しての燃料洩れ量が大きくなるが、タ
ンク本体に近い第2シール部材S2を通しての燃料洩れ
量が小さいため、この第2シール部材S2の作用で燃料
蒸気の大気拡散を効果的に防止することができる。以上
のように、高温時の燃料蒸気の透過防止性能は第1シー
ル部材S1が第2シール部材S2よりも高く、かつ低温
時の燃料の漏洩防止性能は第2シール部材S2が第1シ
ール部材S1よりも高いので、高温時における燃料蒸気
の透過防止性能と低温時における燃料の漏洩防止性能と
を両立させることができる。また第1シール部材S1を
第2シール部材S2よりもフィラーチューブ11の給油
口12の開口端側に配置したことにより、以下のような
効果を発揮させることができる。即ち、高温時にタンク
本体に近い側の第2シール部材S2を透過して第1、第
2シール部材S1,S2間に入り込んだ燃料蒸気は、タ
ンク本体から遠い側の第2シール部材S2から外部に透
過することはなく、第2シール部材S2を逆方向に透過
してタンク本体に戻ることもある。それに対して、仮に
第2シール部材S2を第1シール部材S1よりもフィラ
ーチューブ11の給油口12の開口端側に配置したとす
ると、低温時にタンク本体に近い側の第1シール部材S
1から漏洩して第1、第2シール部材S1,S2間に入
り込んだ燃料は、第1シール部材S1を逆方向に漏洩し
てタンク本体に戻ることはまず無く、いずれはタンク本
体から遠い側の第2シール部材S2から外部に漏洩して
しまう。従って、第1シール部材S1を第2シール部材
S2よりもフィラーチューブ11の給油口12の開口端
側に配置することにより、燃料蒸気の大気への拡散量を
更に減少させることができる。次に、図4に基づいて本
発明の第2実施例を説明する。第1実施例では、第2シ
ール部材S2がフィラーキャップ13の本体部14のシ
ール部材保持溝14bに保持されているが、第2実施例
では、フィラーキャップ13の鍔部15の下面における
第1シール部材S1の半径方向内側に第2シール部材S
2が配置される。この第2実施例によっても、前記第1
実施例と同様の作用効果を達成することができる。以
上、本発明の実施例を詳述したが、本発明はその要旨を
逸脱しない範囲で種々の設計変更を行うことが可能であ
る。例えば、実施例では自動車用の燃料タンクを例示し
たが、本発明は他の任意の用途の燃料タンクに対して適
用することができる。また第1シール部材S1および第
2シール部材S2の材料は実施例のものに限定されず、
特許請求の範囲に記載された要件を満たすものであれ
ば、任意の材料を採用することがきる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on embodiments of the present invention shown in the accompanying drawings. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a filler port of a filler pipe and a filler cap, and FIG. 2 is a graph showing a change in a fuel leakage amount of a seal member with respect to a temperature. FIG. 3 is a graph showing the fuel vapor permeation amount of the seal member with respect to the temperature. As shown in FIG. 1, a filler port 12 is provided at an upper end of a filler tube 11 which rises upward from a tank body of a fuel tank for an automobile, and the filler port 12 is provided with a detachable filler cap 13.
Is closed by Filling port 12 of filler tube 11
Female screw 12a formed to project from the inner peripheral surface of
The male screw 14 a formed on the outer peripheral surface of the main body 14 of the filler cap 13 is screwed together, so that the filler cap 13 is fixed to the filler port 12. Filler cap 13
L-shaped section 1 extending radially outward from main body 14
5 protrudes, and the lower surface of the flange portion 15
An annular first seal member S1 that can be brought into contact with the upper surface of the flange 12b whose outside end is bent outward is mounted. The male screw 1 in the main body 14 of the filler cap 13
4a, a seal member holding groove 14b is formed, and an annular second fitting fitted into the seal member holding groove 14b.
The seal member S2 comes into contact with the inner peripheral surface of the fuel filler port 12. In the present embodiment, the first seal member S1 is made of fluororubber made of a polymer of vinylidene fluoride, and the second seal member S2 is made of butadiene, hydrogenated butadiene,
It is composed of a hydrogenated nitrile rubber consisting of a polymer with acrylonitrile. FIG. 2 is a graph showing the amount of fuel leakage through the seal member. In particular, the amount of fuel leakage at a low temperature of 0 ° C. or lower is much smaller in the second seal member S2 than in the first seal member S1. ing. FIG. 3 is a graph showing the amount of fuel vapor permeated through the seal member.
The first seal member S1 is significantly smaller than the second seal member S2. At a high temperature (see FIG. 2) where the amount of fuel leakage through the first and second seal members S1 and S2 is small (see FIG. 2), the fuel vapor passes through the second seal member S2 close to the tank body as shown in FIG. Although the permeation amount is large, the permeation amount of the fuel vapor through the first seal member S1 far from the tank main body is small, so that the effect of the first seal member S1 can effectively prevent the diffusion of the fuel vapor into the atmosphere. Also, at low temperatures when the amount of fuel vapor permeated through the first and second seal members S1 and S2 is small (see FIG. 2), the amount of fuel leakage through the first seal member S1 far from the tank body as shown in FIG. Although it becomes large, the amount of fuel leakage through the second seal member S2 close to the tank main body is small, so that the action of the second seal member S2 can effectively prevent the diffusion of fuel vapor into the atmosphere. As described above, the first seal member S1 has higher fuel vapor permeation prevention performance at high temperature than the second seal member S2, and the second seal member S2 has lower fuel leakage prevention performance at low temperature. Since it is higher than S1, it is possible to achieve both the fuel vapor permeation prevention performance at high temperatures and the fuel leakage prevention performance at low temperatures. Further, by disposing the first seal member S1 closer to the opening end of the filler port 12 of the filler tube 11 than the second seal member S2, the following effects can be exerted. That is, at a high temperature, the fuel vapor that has passed through the second seal member S2 on the side closer to the tank body and entered between the first and second seal members S1 and S2 is externally transmitted from the second seal member S2 farther from the tank body. And may pass through the second seal member S2 in the opposite direction and return to the tank body. On the other hand, if the second seal member S2 is arranged closer to the opening end of the filler port 12 of the filler tube 11 than the first seal member S1, the first seal member S2 on the side closer to the tank body at low temperatures.
The fuel leaked from 1 and entering between the first and second seal members S1 and S2 is unlikely to leak back through the first seal member S1 in the opposite direction and return to the tank body. From the second seal member S2. Therefore, by disposing the first seal member S1 closer to the opening end of the filler port 12 of the filler tube 11 than the second seal member S2, the amount of diffusion of the fuel vapor into the atmosphere can be further reduced. Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the second seal member S2 is held in the seal member holding groove 14b of the body portion 14 of the filler cap 13, but in the second embodiment, the first seal member S2 is provided on the lower surface of the flange portion 15 of the filler cap 13. A second seal member S is provided radially inward of the seal member S1.
2 are arranged. Also according to the second embodiment, the first
The same operation and effect as the embodiment can be achieved. Although the embodiments of the present invention have been described in detail, various design changes can be made in the present invention without departing from the gist thereof. For example, in the embodiments, a fuel tank for an automobile is illustrated, but the present invention can be applied to a fuel tank for any other use. Further, the materials of the first seal member S1 and the second seal member S2 are not limited to those of the embodiment,
Any material can be adopted as long as it satisfies the requirements described in the claims.

【発明の効果】以上のように請求項1に記載された発明
によれば、フィラーキャップに設けた第1シール部材お
よび第2シール部材のうち、第1シール部材は第2シー
ル部材よりも高温時の燃料蒸気の透過防止性能が高いの
で、燃料蒸気が透過し易い高温時においても、第1シー
ル部材で燃料蒸気の透過を抑制することができ、しかも
第2シール部材は第1シール部材よりも低温時の燃料の
漏洩防止性能が高いので、シール部材の弾力性が低下し
易い低温時においても第2シール部材で燃料の漏洩を防
止することができる。従って、高温時における燃料蒸気
の透過防止と低温時における燃料の漏洩防止とを両立さ
せることが可能となる。また請求項2に記載された発明
によれば、第1シール部材を第2シール部材よりもフィ
ラーチューブの給油口の開口端側に配置したので、高温
時に第2シール部材を透過して第1シール部材との間に
浸入した燃料蒸気は、第2シール部材を逆方向に透過し
て燃料タンク側に戻ることができ、第1シール部材を通
過して大気に拡散する燃料蒸気の量は極僅かなものとな
る。それに対して、第1シール部材および第2シール部
材の位置関係を上記と逆にすると、低温時に第1シール
部材から漏洩して第2シール部材との間に浸入した燃料
は、第1シール部材を逆方向に漏洩して燃料タンク側に
戻ることができないため、いずれは第2シール部材から
漏洩して大気に拡散してしまう。従って、第1シール部
材および第2シール部材を本発明の如く配置することに
より、燃料蒸気の大気への拡散量を更に減少させること
ができる。
As described above, according to the first aspect of the present invention, of the first seal member and the second seal member provided on the filler cap, the first seal member has a higher temperature than the second seal member. Since the fuel vapor permeation prevention performance at the time is high, even at a high temperature where the fuel vapor easily permeates, the first seal member can suppress the permeation of the fuel vapor, and the second seal member is more effective than the first seal member. Also, since the fuel leakage prevention performance at a low temperature is high, the second seal member can prevent the fuel leakage even at a low temperature at which the elasticity of the seal member tends to decrease. Therefore, it is possible to achieve both prevention of fuel vapor permeation at high temperatures and prevention of fuel leakage at low temperatures. According to the second aspect of the present invention, the first seal member is disposed closer to the opening end of the filler port of the filler tube than the second seal member. The fuel vapor that has entered between the seal member and the second seal member can pass through the second seal member in the reverse direction and return to the fuel tank side, and the amount of fuel vapor that diffuses to the atmosphere through the first seal member is extremely small. It will be slight. On the other hand, if the positional relationship between the first seal member and the second seal member is reversed, the fuel that leaks from the first seal member at a low temperature and enters the space between the first seal member and the second seal member will be removed by the first seal member. Leaks in the reverse direction and cannot return to the fuel tank side, and eventually leaks from the second seal member and diffuses into the atmosphere. Therefore, by disposing the first seal member and the second seal member as in the present invention, it is possible to further reduce the diffusion amount of the fuel vapor into the atmosphere.

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

【図1】フィラーパイプの給油口およびフィラーキャッ
プの縦断面図
FIG. 1 is a longitudinal sectional view of a filler pipe filler port and a filler cap.

【図2】温度に対するシール部材の燃料洩れ量の変化を
示すグラフ
FIG. 2 is a graph showing a change in a fuel leakage amount of a seal member with respect to a temperature.

【図3】温度に対するシール部材の燃料蒸気透過量を示
すグラフ
FIG. 3 is a graph showing a fuel vapor permeation amount of a seal member with respect to a temperature.

【図4】第2実施例に係るフィラーパイプの給油口およ
びフィラーキャップの縦断面図
FIG. 4 is a longitudinal sectional view of a filler port and a filler cap of a filler pipe according to a second embodiment.

【符号の説明】[Explanation of symbols]

11 フィラーチューブ 12 給油口 13 フィラーキャップ S1 第1シール部材 S2 第2シール部材 DESCRIPTION OF SYMBOLS 11 Filler tube 12 Filling port 13 Filler cap S1 First seal member S2 Second seal member

───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤野 竜二 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 (72)発明者 小林 誠 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 (72)発明者 清水 良浩 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 (72)発明者 鈴木 武 埼玉県和光市中央1丁目4番1号 株式会 社本田技術研究所内 Fターム(参考) 3D038 CA22 CA25 CB01 CC15 3J040 AA17 BA02 CA02 HA30 3J046 AA07 BB03 BC05 BC16 DA10 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ryuji Fujino 1-4-1 Chuo, Wako-shi, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Makoto Kobayashi 1-4-1 Chuo, Wako-shi, Saitama Inside Honda R & D Co., Ltd. (72) Yoshihiro Shimizu, Inventor 1-4-1 Chuo, Wako-shi, Saitama Prefecture Inside Honda R & D Co., Ltd. (72) Takeshi Suzuki 1-4-1, Chuo, Wako-shi, Saitama Pref. F-term in Honda R & D Co., Ltd. (reference) 3D038 CA22 CA25 CB01 CC15 3J040 AA17 BA02 CA02 HA30 3J046 AA07 BB03 BC05 BC16 DA10

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 燃料タンクのフィラーチューブ(11)
の給油口(12)を閉塞するフィラーキャップ(13)
のシール構造において、 フィラーキャップ(13)に第1シール部材(S1)お
よび第2シール部材(S2)を設け、第1シール部材
(S1)は第2シール部材(S2)よりも高温時の燃料
蒸気の透過防止性能が高く、かつ第2シール部材(S
2)は第1シール部材(S1)よりも低温時の燃料の漏
洩防止性能が高いことを特徴とするフィラーキャップの
シール構造。
1. A filler tube (11) for a fuel tank.
Filler cap (13) that closes the oil filler port (12)
In the sealing structure of (1), a first seal member (S1) and a second seal member (S2) are provided on the filler cap (13), and the first seal member (S1) is a fuel at a higher temperature than the second seal member (S2) The second seal member (S
2) A filler cap sealing structure characterized by having higher fuel leakage prevention performance at low temperatures than the first seal member (S1).
【請求項2】 第1シール部材(S1)を第2シール部
材(S2)よりもフィラーチューブ(11)の給油口
(12)の開口端側に配置したことを特徴とする、請求
項1に記載のフィラーキャップのシール構造。
2. The method according to claim 1, wherein the first seal member (S1) is disposed closer to the opening end of the filler port (12) of the filler tube (11) than the second seal member (S2). The seal structure of the described filler cap.
JP2000337789A 2000-11-06 2000-11-06 Filler cap sealing structure Pending JP2002144894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000337789A JP2002144894A (en) 2000-11-06 2000-11-06 Filler cap sealing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000337789A JP2002144894A (en) 2000-11-06 2000-11-06 Filler cap sealing structure

Publications (1)

Publication Number Publication Date
JP2002144894A true JP2002144894A (en) 2002-05-22

Family

ID=18813117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000337789A Pending JP2002144894A (en) 2000-11-06 2000-11-06 Filler cap sealing structure

Country Status (1)

Country Link
JP (1) JP2002144894A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006082765A1 (en) * 2005-02-02 2006-08-10 Toyota Jidosha Kabushiki Kaisha Seal structure of high-pressure tank
DE102009030950A1 (en) * 2009-06-29 2010-12-30 Daimler Ag Pressure tank i.e. water tank, for gaseous medium in motor vehicle, has circularly rotating seal provided with U-shaped cross section and directing groove-like recess radially inward, and metallic spring ring arranged in recess of seal
US8096438B2 (en) 2008-06-03 2012-01-17 Briggs & Stratton Corporation Fuel tank cap for a fuel tank
US8915234B2 (en) 2010-10-25 2014-12-23 Briggs & Stratton Corporation Fuel cap
CN108674293A (en) * 2018-05-03 2018-10-19 江苏润宇环境工程有限公司 Gasoline vapor recovery sealing cover

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006082765A1 (en) * 2005-02-02 2006-08-10 Toyota Jidosha Kabushiki Kaisha Seal structure of high-pressure tank
JPWO2006082765A1 (en) * 2005-02-02 2008-06-26 トヨタ自動車株式会社 High pressure tank seal structure
US7971852B2 (en) 2005-02-02 2011-07-05 Toyota Jidosha Kabushiki Kaisha Seal structure of high-pressure tank
JP4715841B2 (en) * 2005-02-02 2011-07-06 トヨタ自動車株式会社 High pressure tank seal structure
DE112006000286B4 (en) * 2005-02-02 2012-02-09 Toyota Jidosha Kabushiki Kaisha Sealing system for a high-pressure tank
US8096438B2 (en) 2008-06-03 2012-01-17 Briggs & Stratton Corporation Fuel tank cap for a fuel tank
US8408415B2 (en) 2008-06-03 2013-04-02 Briggs & Stratton Corporation Fuel tank cap for a fuel tank
DE102009030950A1 (en) * 2009-06-29 2010-12-30 Daimler Ag Pressure tank i.e. water tank, for gaseous medium in motor vehicle, has circularly rotating seal provided with U-shaped cross section and directing groove-like recess radially inward, and metallic spring ring arranged in recess of seal
DE102009030950B4 (en) * 2009-06-29 2011-05-26 Daimler Ag Pressure vessel with a seal
US8915234B2 (en) 2010-10-25 2014-12-23 Briggs & Stratton Corporation Fuel cap
CN108674293A (en) * 2018-05-03 2018-10-19 江苏润宇环境工程有限公司 Gasoline vapor recovery sealing cover

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