JPS6030200Y2 - fuel tank cap - Google Patents
fuel tank capInfo
- Publication number
- JPS6030200Y2 JPS6030200Y2 JP15450682U JP15450682U JPS6030200Y2 JP S6030200 Y2 JPS6030200 Y2 JP S6030200Y2 JP 15450682 U JP15450682 U JP 15450682U JP 15450682 U JP15450682 U JP 15450682U JP S6030200 Y2 JPS6030200 Y2 JP S6030200Y2
- Authority
- JP
- Japan
- Prior art keywords
- breather chamber
- valve
- fuel tank
- groove
- hole
- 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
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Closures For Containers (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Description
【考案の詳細な説明】
本考案は車両用燃料タンクの注入口に装着されるタンク
キャップに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tank cap attached to an inlet of a vehicle fuel tank.
この種キャップには、タンク内の内圧の変化に対応し得
るようにブリーザ弁を設けているが、車両の急停止や衝
突又はオートバイのように転倒したときタンク内のガソ
リンが、該ブリーザ弁のブリーザ孔を介して漏洩する不
都合を有する。This type of cap is equipped with a breather valve to respond to changes in the internal pressure inside the tank, but when the vehicle suddenly stops, collides, or falls over like a motorcycle, the gasoline in the tank leaks out of the breather valve. This has the disadvantage of leakage through the breather hole.
本考案はか）る不都合を改良することを目的としたもの
で、燃料タンク１の注入口２０縁を遮うフランジ部３と
、該フランジ部３から内方に突出されて注入口２内に嵌
挿されるシリンダ錠内装のボデ一部４とからなる燃料タ
ンクキャップにおいて、前記ボデ一部４に、前記フラン
ジ部３の外周に開口する大気孔５に連る軸方向の第１溝
６と、前記フランジ部３の内周に開口するブリジ一孔７
に連る軸方向の第２溝８とを形成すると共に、該第１溝
６に連る第１ブリザー室９と該第２溝８に連る第２ブリ
ザー室１０とを弁座１１を介して上下に形成せしめ、該
第１ブリザー室９に前記弁座１１に開口した弁孔１２を
開閉すべく該弁座１１にばね１３を介して弾着される弁
体１４を設け、該弁体１４に前記第２ブリザー室１０内
の高圧で閉じる第１逆止弁１５を設けると共に前記第２
ブ、リザー室１０にタンク１内の高圧で閉じる第２逆止
弁１６を設けたことを特徴とする。The present invention is aimed at improving the above disadvantages, and includes a flange portion 3 that blocks the edge of the inlet 20 of the fuel tank 1, and a flange portion 3 that protrudes inward from the flange portion 3 and is inserted into the inlet 2. In a fuel tank cap consisting of a body part 4 inside a cylinder lock to be fitted, the body part 4 has a first groove 6 in the axial direction connected to an air hole 5 opening on the outer periphery of the flange part 3; A bridge hole 7 opened on the inner periphery of the flange portion 3
A second axial groove 8 connected to the first groove 6 is formed, and a first breather chamber 9 connected to the first groove 6 and a second breather chamber 10 connected to the second groove 8 are connected via the valve seat 11. A valve body 14 is provided in the first breather chamber 9 and is elastically attached to the valve seat 11 via a spring 13 in order to open and close a valve hole 12 opened in the valve seat 11. 14 is provided with a first check valve 15 that closes at high pressure in the second breather chamber 10, and the second
The second check valve 16 is provided in the reservoir chamber 10 and is closed by the high pressure in the tank 1.
図面でボデ一部４は注入口２内に嵌挿されて図示シない
シリンダ錠のロックバーがタンクの装着部の端縁に係合
すると該ボデ一部４の外周に遊嵌されるガイド１７がば
ね１８の附勢により前記フランジ部３の内面に取付けた
環状のシールラバー１９を注入口２の口縁に圧接して締
付状態に施錠されるようになっており、タンク内の内圧
は該シールラバー１９の上面に形成した通路とガイド１
７のボデ一部４との遊隙とを介してブリジ一孔７に到達
するようにした。In the drawing, when the body part 4 is fitted into the inlet 2 and the lock bar of a cylinder lock (not shown) engages with the edge of the mounting part of the tank, a guide 17 is loosely fitted around the outer periphery of the body part 4. The annular seal rubber 19 attached to the inner surface of the flange portion 3 is pressed against the rim of the injection port 2 by the bias of the spring 18, and the internal pressure inside the tank is reduced. Passage and guide 1 formed on the upper surface of the seal rubber 19
The bridge hole 7 is reached through the clearance between the body part 4 and the bridge hole 7.
図中２０は第２溝８に設けたフィルタを示す。In the figure, 20 indicates a filter provided in the second groove 8.
次にその作動を説明すると、外気温度の上昇により気化
ガスがタンク１内の内圧を高めるとき、常時は気孔を開
放している第１逆止弁１５と第２逆止弁１６とは閉じ、
更に、その内圧の上昇による気化ガスは、シールラバー
１９に設けた通路とガイド１７の遊隙とを介してブリチ
一孔７より第２溝８を通過して、第２ブリザー室１０に
至り、該室１０の内圧が、弁体１４を附勢するばね１３
の弾発力にまさるとき弁体１４は弁座１１より上昇して
弁孔１２を第１ブリザー室９に連通ずるため、第１溝６
と大気孔５とを介して大気に連る第１ブリザー室９はタ
ンク内の内圧を大気圧と等しく低下させ、かくて開放さ
れる第２逆止弁１６を介して気化ガスと共に第２ブリザ
ー室１０に貯溜される燃料はタンク１内に戻され、又エ
ンジンが可動してその振動と燃料の消費によってタンク
内の負圧が高まった時は、各逆止弁１５，１６は開く方
に作用されて、大気の導入が円滑に行われてタンク内を
常圧に保持するものである。Next, to explain its operation, when the vaporized gas increases the internal pressure inside the tank 1 due to a rise in outside air temperature, the first check valve 15 and the second check valve 16, which normally open their pores, close.
Furthermore, the vaporized gas due to the increase in internal pressure passes through the second groove 8 from the first hole 7 through the passage provided in the seal rubber 19 and the clearance of the guide 17, and reaches the second breather chamber 10. The internal pressure of the chamber 10 causes a spring 13 that biases the valve body 14.
When the elastic force exceeds the elastic force of
The first breather chamber 9, which is connected to the atmosphere through the air hole 5 and the air hole 5, lowers the internal pressure within the tank to be equal to the atmospheric pressure, and the vaporized gas and the second breather chamber 9 are connected to the atmosphere through the second check valve 16, which is opened. The fuel stored in the chamber 10 is returned to the tank 1, and when the engine is running and the negative pressure in the tank increases due to its vibrations and fuel consumption, each check valve 15, 16 is opened. This allows atmospheric air to be introduced smoothly and maintains the pressure inside the tank at normal pressure.
このように本考案によるときは、フランジ部３の内周に
ブリチ一孔７を開口させたから、該ブリチ一孔７は油面
より最も離間されて、走行時のタンク内の波動によるも
燃料が該ブリチ一孔７に達することができないので走行
時の燃料の流出を有効に防止でき而も該ブリチ一孔７に
連る弁座は大気側に通じる第１ブリザー室９とタンク側
に通じる第２ブリザー室１０とに形成され、その第１ブ
リザー室９に設けた弁体１４とその第２ブリザー室１０
とにそれぞれ第１逆止弁１５と第２逆止弁１６とを設け
たものであるからタンク１内の内圧が異常に上昇した時
または車が転倒した時に第２ブリザー室１０に侵入した
気化ガスが第１ブリザー室９へ侵入することがなく安全
であると共に、その弁体１４の開放時には各逆止弁１５
．１６直ちに開放されて第２ブリザー室１０に貯溜され
る燃料の復帰が円滑に行われる等の効果を有する。In this way, according to the present invention, since the burr hole 7 is opened on the inner circumference of the flange portion 3, the burr hole 7 is farthest away from the oil level, and the fuel can be prevented from flowing due to waves in the tank during running. Since the valve seat cannot reach the breech hole 7, it is possible to effectively prevent fuel from flowing out during driving. 2 breather chambers 10, and a valve body 14 provided in the first breather chamber 9 and the second breather chamber 10.
Since a first check valve 15 and a second check valve 16 are provided in each of the tank 1 and the tank 1, vaporization that enters the second breather chamber 10 when the internal pressure inside the tank 1 rises abnormally or when the car overturns. It is safe because gas does not enter the first breather chamber 9, and each check valve 15 is closed when the valve body 14 is opened.
．． 16, the fuel stored in the second breather chamber 10 is immediately opened and the fuel stored in the second breather chamber 10 can be returned smoothly.
図面は本考案の一実施例を示すもので第１図は縦断面図
、第２図は第１図■−■線断面図、第３図は第２図■−
■線縦断面図である。
１・・・・・・燃料タンク、２・・・・・・注入口、３
・・・・・・フランジ部、４・・・・・・ボデ一部、５
・・・・・・大気口、６・・・・・・第１溝、７・・・
・・・ブリチ一孔、訃・・・・・第２溝、９・・・・・
・第１ブリザー室、１０・・間第２ブリザー室、１１・
・・・・・弁座、１２・・・・・・弁孔、１３・・・・
・・ばね、１４・・・・・・弁体、１５・・・・・・第
１逆止弁、１６・・・・・・第２逆止弁。The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a cross-sectional view along the line ■-■ in FIG.
■It is a vertical cross-sectional view. 1...Fuel tank, 2...Inlet, 3
...Flange part, 4...Body part, 5
...Air port, 6...First groove, 7...
...Burichi 1st hole, butthole...2nd groove, 9...
・1st breather room, 10・・2nd breather room, 11・
... Valve seat, 12 ... Valve hole, 13 ...
... Spring, 14 ... Valve body, 15 ... First check valve, 16 ... Second check valve.
Claims (1)
フランジ部３から内方に突出されて注入口２内に嵌挿さ
れるシリンダ錠内装のボデ一部４とからなる燃料タンク
キャップにおいて、前記ボデ一部４に、前記フランジ部
３の外周に開口する大気孔５に連る軸方向の第１溝６と
、前記フランジ部３の内周に開口するブリジ一孔７に連
る軸方向の第２溝８とを形成すると共に、該第１溝６に
連る第１ブリザー室９と該第２溝８に連る第２ブリザー
室１０とを弁座１１を介して上下に形成せしめ、該第１
ブリザー室９に前記弁座１１に開口した弁孔１２を開閉
すべく該弁座１１にばね１３を介して弾着される弁体１
４を設け、該弁体゛１４に前記第２ブリザー室１０内の
高圧で閉じる第１逆止弁１５を設けると共に前記第２ブ
リザー室１０にタンク１内の高圧で閉じる第２逆止弁１
６を設けたことを特徴とする燃料タンクキャップ。A fuel tank cap consisting of a flange portion 3 that blocks the edge of an injection port 20 of a fuel tank 1, and a body portion 4 inside a cylinder lock that projects inward from the flange portion 3 and is fitted into the injection port 2. , a first groove 6 in the axial direction connected to the air hole 5 opened on the outer periphery of the flange part 3 in the body part 4, and a shaft connected to a bridge hole 7 opened in the inner periphery of the flange part 3; A first breather chamber 9 connected to the first groove 6 and a second breather chamber 10 connected to the second groove 8 are formed vertically via the valve seat 11. Seshime, the first
A valve body 1 is attached to the valve seat 11 via a spring 13 to open and close a valve hole 12 opened in the valve seat 11 in the breather chamber 9.
A first check valve 15 is provided in the valve body 14 to be closed by the high pressure in the second breather chamber 10, and a second check valve 1 which is closed by the high pressure in the tank 1 is provided in the second breather chamber 10.
A fuel tank cap characterized by having 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15450682U JPS6030200Y2 (en) | 1982-10-14 | 1982-10-14 | fuel tank cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15450682U JPS6030200Y2 (en) | 1982-10-14 | 1982-10-14 | fuel tank cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5960155U JPS5960155U (en) | 1984-04-19 |
| JPS6030200Y2 true JPS6030200Y2 (en) | 1985-09-11 |
Family
ID=30341518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15450682U Expired JPS6030200Y2 (en) | 1982-10-14 | 1982-10-14 | fuel tank cap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6030200Y2 (en) |
-
1982
- 1982-10-14 JP JP15450682U patent/JPS6030200Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5960155U (en) | 1984-04-19 |
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