JPH036510Y2 - - Google Patents
Info
- Publication number
- JPH036510Y2 JPH036510Y2 JP1983027199U JP2719983U JPH036510Y2 JP H036510 Y2 JPH036510 Y2 JP H036510Y2 JP 1983027199 U JP1983027199 U JP 1983027199U JP 2719983 U JP2719983 U JP 2719983U JP H036510 Y2 JPH036510 Y2 JP H036510Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- suction
- fuel tank
- suction head
- reservoir
- 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 70
- 239000002828 fuel tank Substances 0.000 claims description 34
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は自動車用燃料タンクの燃料吸込装置に
関するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a fuel suction device for an automobile fuel tank.
燃料タンクの燃料残量が少くなると、車体が傾
いた場合に燃料が燃料タンクの片側へ移動し、燃
料吸込管の吸込口に燃料がなくなり、一時的に内
燃機関へ燃料が供給されなくなる。
When the amount of fuel remaining in the fuel tank becomes low, if the vehicle body is tilted, the fuel will move to one side of the fuel tank, and the suction port of the fuel suction pipe will run out of fuel, temporarily stopping the supply of fuel to the internal combustion engine.
このような燃料切れ現象を解消するために、実
開昭48−59911号公報には、燃料吸込管の端部に
可撓性ホースを介して吸込ヘツドを接続し、吸込
ヘツドを燃料タンクの底壁に沿つて移動可能に配
設した燃料吸込装置が提案されている。しかし、
これは吸込ヘツドが車体振動に伴つて常に移動す
るので、可撓性ホースの耐久性が問題となる。 In order to eliminate such fuel shortage phenomenon, Japanese Utility Model Application No. 48-59911 discloses that a suction head is connected to the end of the fuel suction pipe via a flexible hose, and the suction head is placed at the bottom of the fuel tank. Fuel suction devices have been proposed that are movably arranged along a wall. but,
This is because the suction head constantly moves as the vehicle body vibrates, making the durability of the flexible hose a problem.
また、実開昭57−174125号公報には、燃料タン
クの底壁へ向つて垂直に延びる燃料吸込管の端部
に、燃料吸込管の端部を軸として回転可能の揺動
箱を支持し、揺動箱の底壁の燃料吸込管から離れ
た部分に吸込口を配設した燃料タンクの燃料吸込
装置が開示される。 Furthermore, Japanese Utility Model Application Publication No. 57-174125 discloses that a rocking box rotatable around the end of the fuel suction pipe is supported at the end of the fuel suction pipe that extends vertically toward the bottom wall of the fuel tank. , discloses a fuel suction device for a fuel tank in which a suction port is disposed in a portion of the bottom wall of a rocking box that is remote from a fuel suction pipe.
上述の燃料吸込装置では、車体が傾くと揺動箱
が燃料吸込管を中心として回転し、吸込口が燃料
タンクの低い方つまり燃料流動方向へ移動する。
揺動箱の吸込口は、燃料のゆつくりとした動きに
はほぼ追随移動するが、車体の激しい瞬間的な動
きには必ずしも追随できないので、上述の燃料吸
込装置は燃料切れ現象を完全に防止しえるとは言
いがたい。また、上述の燃料吸込装置では、燃料
タンクの変形に伴つて底壁がせりあがり、揺動箱
に接触すると、揺動箱は車体の傾きに対応した回
転が不可能となり、燃料切れ現象を回避できなく
なる。 In the above-described fuel suction device, when the vehicle body is tilted, the rocking box rotates around the fuel suction pipe, and the suction port moves toward the lower part of the fuel tank, that is, toward the fuel flow direction.
The suction port of the rocking box moves to almost follow the slow movement of the fuel, but it cannot necessarily follow the rapid movement of the vehicle body, so the above-mentioned fuel suction device completely prevents the phenomenon of running out of fuel. It's hard to say that it's a good idea. In addition, in the above-mentioned fuel suction device, when the bottom wall rises as the fuel tank deforms and comes into contact with the rocking box, the rocking box becomes unable to rotate in response to the tilt of the vehicle body, thereby avoiding the fuel shortage phenomenon. become unable.
これに対して、第１図に示すように、燃料タン
ク１の内部に小容量の燃料溜３を配設し、燃料溜
３の内部へ突出する燃料吸込管２に、ラツパ状の
吸込ヘツド４を結合した燃料吸込装置が提案され
ている。この燃料吸込装置では、燃料吸込管２が
吸込ヘツド４と一緒に燃料タンクに固定されてい
るので、上述したような問題はないが、次のよう
な問題がある。 On the other hand, as shown in FIG. 1, a small-capacity fuel reservoir 3 is disposed inside a fuel tank 1, and a flap-shaped suction head 4 is attached to a fuel suction pipe 2 that protrudes into the inside of the fuel reservoir 3. A fuel suction device that combines the two has been proposed. In this fuel suction device, since the fuel suction pipe 2 is fixed to the fuel tank together with the suction head 4, there is no problem as described above, but there is the following problem.
すなわち、燃料が気化して燃料タンクの外部へ
発散するのを防止するために、燃料タンクは密閉
構造となつているので、燃料タンクに気化器を経
て連通する内燃機関の吸気管の負圧により燃料タ
ンクの内圧が負圧になる傾向がある。燃料タンク
の負圧が所定値を超えると、燃料タンクの内部を
外部に連通させて大気圧に戻す負圧弁が備えられ
てはいるが、車体の軽量化のために、燃料タンク
に板厚の薄いものが用いられるようになつたため
に、負圧弁の作動点以下でも燃料タンクが外圧に
より変形されることがある。 In other words, in order to prevent the fuel from vaporizing and escaping outside the fuel tank, the fuel tank has a sealed structure. The internal pressure of the fuel tank tends to become negative. When the negative pressure in the fuel tank exceeds a predetermined value, the fuel tank is equipped with a negative pressure valve that connects the inside of the fuel tank to the outside and returns it to atmospheric pressure. Because thinner fuel tanks have come to be used, the fuel tank may be deformed by external pressure even below the operating point of the negative pressure valve.
このような場合、第２図に示すように、特に平
坦で広い底壁１ａがせりあげられた状態に変形し
やすいので、底壁１ａのせりあがりにより、燃料
溜３の底壁３ａが吸込ヘツド４へ押し付けられる
と、吸込ヘツド４が塞がれ、燃料を吸い込むこと
ができなくなる。 In such a case, as shown in FIG. 2, the flat and wide bottom wall 1a is particularly likely to be deformed into a raised state. 4, the suction head 4 is blocked and cannot suck in fuel.
本考案の目的は、燃料タンクの変形による吸込
ヘツドの閉鎖を防止し得る、自動車用燃料タンク
の燃料吸込装置を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel suction device for an automobile fuel tank that can prevent the suction head from closing due to deformation of the fuel tank.
上記目的を達成するために、本考案の構成は燃
料タンクの底部に箱形の燃料溜を結合し、燃料溜
の内部へ突出する燃料吸込管の端部に、弾性材料
からなるラツパ状の吸込ヘツドを結合し、燃料溜
の底壁に設けた放射状に延びる突条の上へ吸込ヘ
ツドの下縁部を当接してなるものである。
In order to achieve the above object, the present invention has a structure in which a box-shaped fuel reservoir is connected to the bottom of the fuel tank, and a bulge-shaped suction pipe made of an elastic material is attached to the end of the fuel suction pipe that protrudes into the fuel reservoir. The lower edge of the suction head is brought into contact with a radially extending protrusion provided on the bottom wall of the fuel reservoir.
燃料溜の底壁に放射状の突条を一体に成形する
ことにより、突条の間に形成される溝通路を通じ
て、燃料溜の燃料が吸込ヘツドの内部に流入し得
るので、燃料タンクが変形しても、吸込ヘツドは
閉鎖されない。
By integrally molding radial protrusions on the bottom wall of the fuel reservoir, the fuel in the fuel reservoir can flow into the interior of the suction head through the groove passage formed between the protrusions, thereby preventing the fuel tank from deforming. Even if the suction head is closed, the suction head will not close.
第３図に示すように、燃料タンク１の底壁１ａ
に箱形の燃料溜３が固定され、燃料溜３の内部へ
突出する燃料吸込管２の端部に弾性材料からなる
ラツパ状の吸込ヘツド４が結合されるのは従来例
と同様である。
As shown in FIG. 3, the bottom wall 1a of the fuel tank 1
As in the conventional example, a box-shaped fuel reservoir 3 is fixed to the fuel reservoir 3, and a flap-shaped suction head 4 made of an elastic material is connected to the end of the fuel suction pipe 2 projecting into the fuel reservoir 3.
本考案は燃料溜３の底壁３ａに、燃料吸込管２
と対向する部分を中心として放射状に延びる複数
の突条６をプレス成型により形成し、突条６の上
に吸込ヘツド４の下端のフランジ４ａを載置し、
突条６の間の溝通路７により燃料溜３と吸込ヘツ
ド４の内部とを連通させたものである。 In the present invention, a fuel suction pipe 2 is attached to the bottom wall 3a of the fuel reservoir 3.
A plurality of protrusions 6 are formed by press molding, and the flange 4a at the lower end of the suction head 4 is placed on the protrusions 6.
A groove passage 7 between the protrusions 6 communicates the fuel reservoir 3 with the inside of the suction head 4.
第４図に示すように、吸込ヘツド４のフランジ
４ａは燃料溜３の底壁３ａに形成した突条６の上
に支持され、フランジ４ａの周方向に沿つて突条
６の間に溝通路７が形成されるから、燃料タンク
１の内圧低下により燃料タンク１が変形し、底壁
１ａがせりあがつて吸込ヘツド４に当つても、吸
込ヘツド４は伸縮するだけで、溝通路７は塞がれ
ない。燃料溜３の燃料が溝通路７を経て燃料吸込
管２へ流れるので、燃料切れ現象が回避される。 As shown in FIG. 4, the flange 4a of the suction head 4 is supported on a protrusion 6 formed on the bottom wall 3a of the fuel reservoir 3, and a groove passageway is formed between the protrusions 6 along the circumferential direction of the flange 4a. 7 is formed, so even if the fuel tank 1 is deformed due to a drop in the internal pressure of the fuel tank 1 and the bottom wall 1a rises and hits the suction head 4, the suction head 4 will only expand and contract and the groove passage 7 will remain Can't be blocked. Since the fuel in the fuel reservoir 3 flows through the groove passage 7 to the fuel suction pipe 2, a fuel shortage phenomenon is avoided.
本考案は上述のように、燃料タンクの底部に箱
形の燃料溜を結合し、燃料溜の内部へ突出する燃
料吸込管の端部に、弾性材料からなるラツパ状の
吸込ヘツドを結合し、燃料溜の底壁に設けた放射
状に延びる突条の上へ吸込ヘツドの下縁部を当接
したから、突条により燃料タンクの底壁の剛性が
向上され、燃料タンクの変形に伴つて燃料溜の底
壁がせりあがつても、吸込ヘツドは単に押し縮め
られるだけで、突条間に形成される溝通路を経て
燃料溜の燃料が吸込ヘツドの内部へ流入し得る状
態が保持されるので、燃料切れ現象を起きすこと
がない。
As described above, the present invention connects a box-shaped fuel reservoir to the bottom of the fuel tank, and connects a flap-shaped suction head made of an elastic material to the end of the fuel suction pipe that protrudes into the fuel reservoir. Since the lower edge of the suction head is brought into contact with the radially extending protrusions provided on the bottom wall of the fuel reservoir, the rigidity of the bottom wall of the fuel tank is improved by the protrusions, and as the fuel tank deforms, the fuel Even if the bottom wall of the fuel reservoir rises, the suction head is simply compressed and a state is maintained in which the fuel in the fuel reservoir can flow into the interior of the suction head through the groove passage formed between the protrusions. Therefore, there is no possibility of running out of fuel.
また、構成部材には何ら可動部分がないので耐
久性に優れる。 Furthermore, since there are no moving parts in the structural members, it has excellent durability.
突条は燃料溜の成形と同時に成形されるから、
コスト増を来さない。 The protrusions are formed at the same time as the fuel reservoir, so
No cost increase.
第１図は従来の自動車用燃料タンクの燃料吸込
装置の側面断面図、第２図は同燃料吸込装置にお
ける燃料タンクの変形状態を示す側面断面図、第
３図は本考案に係る自動車用燃料タンクの燃料吸
込装置の側面断面図、第４図は同装置の吸込ヘツ
ド部を周方向に切断して示す展開断面図である。
１……燃料タンク、１ａ，３ａ……底壁、２…
…燃料吸込管、３……燃料溜、４……吸込ヘツ
ド、４ａ……フランジ、５……切欠、６……突
条、７……溝通路。
FIG. 1 is a side cross-sectional view of a conventional fuel suction device for an automobile fuel tank, FIG. 2 is a side cross-sectional view showing a deformed state of the fuel tank in the same fuel suction device, and FIG. 3 is a side cross-sectional view of a fuel suction device for an automobile fuel tank according to the present invention. FIG. 4 is a side sectional view of the fuel suction device for the tank, and FIG. 4 is a developed sectional view showing the suction head portion of the device cut in the circumferential direction. 1...fuel tank, 1a, 3a...bottom wall, 2...
...Fuel suction pipe, 3...Fuel reservoir, 4...Suction head, 4a...Flange, 5...Notch, 6...Protrusion, 7...Groove passage.
Claims (1)
料溜の内部へ突出する燃料吸込管の端部に、弾性
材料からなるラツパ状の吸込ヘツドを結合し、燃
料溜の底壁に設けた放射状に延びる突条の上へ吸
込ヘツドの下縁部を当接してなる、自動車用燃料
タンクの燃料吸込装置。 A box-shaped fuel reservoir is connected to the bottom of the fuel tank, and a flap-shaped suction head made of an elastic material is connected to the end of the fuel suction pipe that protrudes into the fuel reservoir, and is installed on the bottom wall of the fuel reservoir. A fuel suction device for an automobile fuel tank, in which the lower edge of a suction head is brought into contact with a radially extending protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2719983U JPS59133324U (en) | 1983-02-28 | 1983-02-28 | Fuel suction device for automotive fuel tanks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2719983U JPS59133324U (en) | 1983-02-28 | 1983-02-28 | Fuel suction device for automotive fuel tanks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59133324U JPS59133324U (en) | 1984-09-06 |
| JPH036510Y2 true JPH036510Y2 (en) | 1991-02-19 |
Family
ID=30158093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2719983U Granted JPS59133324U (en) | 1983-02-28 | 1983-02-28 | Fuel suction device for automotive fuel tanks |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59133324U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081954Y2 (en) * | 1989-03-29 | 1996-01-24 | 加藤発条株式会社 | Fuel supply system for vehicles |
| JP6740195B2 (en) * | 2017-09-26 | 2020-08-12 | 愛三工業株式会社 | Fuel inlet member |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6329610Y2 (en) * | 1981-04-28 | 1988-08-09 |
-
1983
- 1983-02-28 JP JP2719983U patent/JPS59133324U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59133324U (en) | 1984-09-06 |
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