JPH0344580Y2 - - Google Patents
Info
- Publication number
- JPH0344580Y2 JPH0344580Y2 JP1984067717U JP6771784U JPH0344580Y2 JP H0344580 Y2 JPH0344580 Y2 JP H0344580Y2 JP 1984067717 U JP1984067717 U JP 1984067717U JP 6771784 U JP6771784 U JP 6771784U JP H0344580 Y2 JPH0344580 Y2 JP H0344580Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- expansion chamber
- tank body
- tank
- breather
- 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
- 239000000446 fuel Substances 0.000 claims description 26
- 239000002828 fuel tank Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は車両などに搭載された燃料タンクに
関する。[Detailed description of the invention] Industrial application field This invention relates to a fuel tank mounted on a vehicle or the like.
従来技術
従来車両などに搭載された燃料タンクとして
は、第６図に示すようにタンク本体ａの上部に膨
張室ｂを設け、この膨張室ｂにブリーザｃを設け
たものが公知である。BACKGROUND ART As shown in FIG. 6, a conventional fuel tank mounted on a vehicle is one in which an expansion chamber b is provided in the upper part of a tank body a, and a breather c is provided in the expansion chamber b.
考案が解決しようとする問題点
しかし上記のような燃料タンクでは膨張室ｂ内
に膨張した燃料の一部が冷えて収縮した際自然に
タンク本体ａ内に戻るように、膨張室ｂをタンク
本体ａより高い位置へ設ける必要があるため、タ
ンクの全高が高くなつて、タンクを設置するのに
多くの場所を必要とする不具合がある。Problems that the invention aims to solve However, in the above-mentioned fuel tank, the expansion chamber b is separated from the tank body so that when a part of the fuel expanded in the expansion chamber b cools and contracts, it naturally returns to the tank body a. Since it is necessary to install the tank at a higher position than a, the total height of the tank increases, resulting in a problem that a large amount of space is required to install the tank.
また車両が傾斜して燃料の一部が膨張室ｂ内へ
逆流した場合でもブリーザｃより燃料が漏れない
ようタンク本体ａと膨張室ｂの位置関係を考慮す
る必要があり、設置に制限を受けるなどの不具合
もあつた。 In addition, even if the vehicle is tilted and some of the fuel flows back into the expansion chamber b, it is necessary to consider the positional relationship between the tank body a and the expansion chamber b so that the fuel will not leak from the breather c, which imposes restrictions on installation. There were also other problems.
この考案は上記不具合を改善する目的でなされ
たものである。 This invention was made for the purpose of improving the above-mentioned problems.
問題点を解決するための手段及び作用
タンク本体の上部に開口された口部よりタンク
本体内に挿脱自在な給油口ユニツト内に、タンク
本体内及びブリーザを介して大気と連通する膨張
室を設けて、温度変化して伴う燃料の膨張収縮を
上記膨張室で吸収するようにした燃料タンク。Means and effects for solving the problem An expansion chamber that communicates with the atmosphere inside the tank body and through a breather is provided in the fuel filler unit, which can be inserted into and removed from the tank body through a mouth opening at the top of the tank body. A fuel tank is provided so that expansion and contraction of fuel caused by temperature changes is absorbed in the expansion chamber.
実施例
考案の一実施例を図面を参照して詳述すると、
図において１は密閉構造をなす角形のタンク本体
で、上部に口部２を有しており、この口部２より
給油口ユニツト３が挿脱自在に挿入されている。
上記給油口ユニツト３は下端が閉鎖された管状を
なしていて、上端部に給油キヤツプ４が着脱自在
に螺合された給油口４ａがフランジ５を介して取
付けられている。上記フランジ５は中央部にスト
レーナ１１を取付けた透孔５ｄを有していて、上
記本体１の口部２に液密、かつ着脱自在に取付け
られている。またフランジ５内には２路の通路５
ａ，５ｂが形成されている。上記通路５ａ，５ｂ
のうち一方５ａの一端はフランジ５ａの下面に開
口されていて、フランジ５ａの下面に接続された
オーバフロー管６の上端に連通されている。オー
バフロー管６の下端は、給油口ユニツト３内を透
孔３ａを介してタンク本体１内に連通する上室３
１と膨張室３2に区割する仕切板７を貫通して膨張
室３2の底部付近に達していると共に、通路５ａ
の他端は上室３1内に開口されている。Example An example of the invention will be described in detail with reference to the drawings.
In the figure, reference numeral 1 denotes a rectangular tank body having a sealed structure, and has a mouth 2 at the top, through which a fuel filler port unit 3 is removably inserted.
The refueling port unit 3 has a tubular shape with a closed lower end, and a refueling port 4a to which a refueling cap 4 is removably screwed is attached to the upper end via a flange 5. The flange 5 has a through hole 5d in the center to which a strainer 11 is attached, and is attached to the mouth 2 of the main body 1 in a liquid-tight manner and detachable. In addition, there are two passages 5 inside the flange 5.
a, 5b are formed. Said passages 5a, 5b
One end of one of them 5a is opened on the lower surface of the flange 5a, and communicates with the upper end of an overflow pipe 6 connected to the lower surface of the flange 5a. The lower end of the overflow pipe 6 is connected to an upper chamber 3 which communicates inside the fuel filler unit 3 with the inside of the tank body 1 through a through hole 3a.
It passes through the partition plate 7 that divides the expansion chamber 3.1 and the expansion chamber 3.2 and reaches near the bottom of the expansion chamber 3.2.
The other end is opened into the upper chamber 31 .
一方通路５ｂの一端はフランジ５の下面に接続
された通気管８の上端に連通されている。通気管
８の他端は仕切板７を貫通して上記膨張室３2の
上部に達していると共に、通路５ｂの他端はフラ
ンジ５の外周面に開口されていて、可撓管９を介
してブリーザ１０に接続されている。 On the other hand, one end of the passage 5b is communicated with the upper end of a ventilation pipe 8 connected to the lower surface of the flange 5. The other end of the ventilation pipe 8 passes through the partition plate 7 and reaches the upper part of the expansion chamber 32 , and the other end of the passage 5b is opened to the outer circumferential surface of the flange 5, and the other end of the passage 5b is opened to the outer peripheral surface of the flange 5. and is connected to the breather 10.
次に作用を説明すると、タンク本体１内に燃料
が充満されている状態でも、第４図に示すように
膨張室３2には燃料が充満されない。従つてこの
状態で気温などの上昇により燃料が膨張すると、
膨張した燃料は第５図に示すように通路５ａより
オーバフロー管６を通つて膨張室３2へ流入し、
膨張室３2内の空気は通気管８よりブリーザ１０
を介して大気へ放出される。その後燃料温度が低
下してタンク本体１内の燃料が収縮すると、タン
ク本体１内が減圧状態となるため、膨張室３2内
にオーバフローした燃料はオーバフロー管６を介
してタンク本体１内へ戻される。また燃料を消費
してタンク本体１内の液位が低下した場合もタン
ク本体１内は減圧状態となるため、膨張室３2内
の燃料タンクは本体１内へ吸上げられると同時
に、膨張室３2内にブリーザ１０を介して大気が
吸入されるようになる。 Next, the operation will be explained. Even when the tank body 1 is filled with fuel, the expansion chamber 32 is not filled with fuel as shown in FIG. Therefore, in this state, if the fuel expands due to a rise in temperature, etc.,
As shown in FIG. 5, the expanded fuel flows from the passage 5a through the overflow pipe 6 into the expansion chamber 32 .
The air in the expansion chamber 32 is passed through the breather 10 through the ventilation pipe 8.
released into the atmosphere via After that, when the fuel temperature decreases and the fuel in the tank body 1 contracts, the pressure inside the tank body 1 becomes reduced, so that the fuel that overflowed into the expansion chamber 32 is returned to the tank body 1 through the overflow pipe 6. It can be done. Also, when the liquid level inside the tank body 1 decreases due to fuel consumption, the inside of the tank body 1 becomes depressurized. Atmospheric air is sucked into the chamber through the breather 10.
考案の効果
この考案は以上詳述したように、膨張室をタン
ク本体内に組込んだので、タンクの全高が低くな
り、これによつて車両などへの設置も容易とな
る。Effects of the invention As detailed above, in this invention, the expansion chamber is built into the tank body, so the overall height of the tank is reduced, which makes it easier to install it in a vehicle or the like.
また給油口ユニツトに設けられた膨張室は密閉
構造となつていて、燃料タンク内の下部に位置す
るようになつており、燃料タンクに燃料を充満し
ても膨張室内には燃料が浸入しない構造となつて
いることから、タンク内に燃料を充満した状態で
気温が上昇しても、膨張した燃料は膨張室内に流
入するため、燃料タンク外へ漏洩することがな
い。 In addition, the expansion chamber provided in the fuel filler unit has a sealed structure and is located at the bottom of the fuel tank, so that even if the fuel tank is filled with fuel, fuel will not seep into the expansion chamber. Therefore, even if the temperature rises while the tank is full of fuel, the expanded fuel will flow into the expansion chamber and will not leak out of the fuel tank.
またブリーザが燃料タンクより離れた高い位置
に設けられていて、燃料タンク内の下部に設けら
れた膨張室と通気管を介して接続されているた
め、車体が走行中に傾むいても、燃料タンク内の
燃料がブリーザより外部へ漏洩することもない。 In addition, the breather is installed at a high position away from the fuel tank, and is connected to the expansion chamber provided at the bottom of the fuel tank via a ventilation pipe, so even if the vehicle body leans while driving, the Fuel in the tank will not leak to the outside from the breather.
図面はこの考案の一実施例を示し、第１図は断
面図、第２図は分解斜視図、第３図は給油口ユニ
ツトの詳細図、第４図及び第５図は作用説明図、
第６図は従来例の説明図である。
１はタンク本体、２は口部、３は給油口ユニツ
ト、４ａは給油口、３2は膨張室、６はオーバフ
ロー管、８は通気管、１０はブリーザ。
The drawings show an embodiment of this invention, with FIG. 1 being a sectional view, FIG. 2 being an exploded perspective view, FIG. 3 being a detailed view of the fuel filler unit, and FIGS.
FIG. 6 is an explanatory diagram of a conventional example. 1 is the tank body, 2 is the mouth, 3 is the fuel filler unit, 4a is the fuel filler port, 32 is the expansion chamber, 6 is the overflow pipe, 8 is the ventilation pipe, and 10 is the breather.
Claims (1)
して、この口部２に上部に給油口４ａを有する給
油口ユニツト３を挿脱自在に嵌挿し、上記給油ユ
ニツト３の下部には、タンク本体１内の下部に位
置するように膨張室３2を設け、この膨張室３2は
タンク本体１の上部内面に開口するオーバーフロ
ー管６によりタンク本体１内と連通すると共に、
上記タンク本体１より離れた高い位置に設けられ
たブリーザ１０と、上記膨張室３2内を通気管８
で連通してなる燃料タンク。 A mouth part 2 is opened in the upper part of the tank body 1 having a sealed structure, and a fuel filler unit 3 having a fuel filler port 4a at the upper part is removably inserted into the mouth part 2. An expansion chamber 32 is provided at the lower part of the tank body 1, and this expansion chamber 32 communicates with the inside of the tank body 1 through an overflow pipe 6 that opens on the inner surface of the upper part of the tank body 1.
A breather 10 is provided at a high position away from the tank body 1, and a ventilation pipe 8 is installed inside the expansion chamber 32 .
A fuel tank that communicates with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6771784U JPS60179527U (en) | 1984-05-11 | 1984-05-11 | fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6771784U JPS60179527U (en) | 1984-05-11 | 1984-05-11 | fuel tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60179527U JPS60179527U (en) | 1985-11-28 |
| JPH0344580Y2 true JPH0344580Y2 (en) | 1991-09-19 |
Family
ID=30601793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6771784U Granted JPS60179527U (en) | 1984-05-11 | 1984-05-11 | fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60179527U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145691U (en) * | 1974-10-02 | 1976-04-03 |
-
1984
- 1984-05-11 JP JP6771784U patent/JPS60179527U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145691U (en) * | 1974-10-02 | 1976-04-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60179527U (en) | 1985-11-28 |
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