JPH0872565A - Fuel counterflow preventing tool - Google Patents
Fuel counterflow preventing toolInfo
- Publication number
- JPH0872565A JPH0872565A JP6214074A JP21407494A JPH0872565A JP H0872565 A JPH0872565 A JP H0872565A JP 6214074 A JP6214074 A JP 6214074A JP 21407494 A JP21407494 A JP 21407494A JP H0872565 A JPH0872565 A JP H0872565A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- fuel
- valve body
- supply pipe
- oil supply
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
- B60K2015/0458—Details of the tank inlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
- B60K15/05—Inlet covers
- B60K2015/0515—Arrangements for closing or opening of inlet cover
- B60K2015/053—Arrangements for closing or opening of inlet cover with hinged connection to the vehicle body
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、燃料タンク内に挿入
された給油パイプの開口に取付けられる燃料逆流防止具
の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a fuel backflow preventer which is attached to an opening of a fuel supply pipe inserted in a fuel tank.
【０００２】[0002]
【従来の技術】図６に示すように、車両などの燃料タン
ク１００は、内部に給油パイプ１０２が挿入された構造
となっており、挿入側の開口１０４には燃料逆流防止具
１０６が取り付けられ、いったん燃料タンク１００内に
供給された燃料が給油パイプ１０２内に逆流しないよう
になっている。2. Description of the Related Art As shown in FIG. 6, a fuel tank 100 for a vehicle or the like has a structure in which a refueling pipe 102 is inserted, and a fuel backflow preventive tool 106 is attached to an opening 104 on the insertion side. The fuel once supplied into the fuel tank 100 is prevented from flowing back into the refueling pipe 102.
【０００３】この燃料逆流防止具１０６は、ヒンジ１１
０によって開閉可能に軸支された弁体１０８を備えてお
り、弁体１０８の下端には錘１１２が設けられている。
この錘１１２によって弁体１０８が閉じ、振動によって
弁体１０８がバタつかないようになっている。また、錘
１１２によるモーメントが大きくなるように、ヒンジ１
１０から錘１１２までの距離を大きくするため、ヒンジ
１１０は給油パイプ１０２に固定加工されたアーム１１
４の上に設けられる。This fuel backflow preventer 106 includes a hinge 11
The valve body 108 is pivotally supported so that it can be opened and closed by 0, and a weight 112 is provided at the lower end of the valve body 108.
The weight 112 closes the valve body 108, and the vibration prevents the valve body 108 from fluttering. In addition, the hinge 1 is designed so that the moment generated by the weight 112 becomes large.
In order to increase the distance from 10 to the weight 112, the hinge 110 is an arm 11 fixed to the oil supply pipe 102.
4 is provided above.
【０００４】しかしながら、従来の燃料逆流防止具１０
６では、給油パイプ１０２にアーム１１４を固定する加
工を行う必要があり、工数を増やすものであった。ま
た、弁体１０８が閉じた状態で、錘１１２が機能するた
めには、給油パイプ１０２の開口１０４を斜め上向きに
加工する必要がある。このように重量との関係を考慮す
る必要があるため、給油パイプ１０２の取付自由度が小
さかった。また、ヒンジ１１０は弁体１０８から離れた
位置にあるので、燃料タンク１００内の燃料が揺れた場
合などに、弁体１０８の基端部１０８Ａに燃料の圧力が
働き、弁体１０８が不用意に開き、弁体１０８がバタつ
くということもある。However, the conventional fuel backflow prevention device 10
In No. 6, it is necessary to perform processing for fixing the arm 114 to the oil supply pipe 102, which increases the number of steps. Further, in order for the weight 112 to function with the valve body 108 closed, the opening 104 of the oil supply pipe 102 needs to be processed obliquely upward. Since it is necessary to consider the relationship with the weight as described above, the degree of freedom in mounting the oil supply pipe 102 is small. Further, since the hinge 110 is located away from the valve body 108, when the fuel in the fuel tank 100 shakes, the fuel pressure acts on the base end portion 108A of the valve body 108, and the valve body 108 is not prepared. There is a case where the valve body 108 flaps when opened.
【０００５】[0005]
【発明が解決しようとする課題】本発明は以上の問題点
を考慮して、給油パイプを複雑な加工する必要がなく、
取付自由度が大きく、燃料の圧力によって弁体がバタつ
かない燃料逆流防止具を提供することを目的とする。SUMMARY OF THE INVENTION In consideration of the above problems, the present invention eliminates the need for complicated processing of the refueling pipe,
An object of the present invention is to provide a fuel backflow preventive device which has a large degree of freedom of attachment and which does not flap the valve body due to fuel pressure.
【０００６】[0006]
【課題を解決するための手段】請求項１に記載の燃料逆
流防止具は、燃料タンクに挿入された給油パイプの開口
に取付けられる燃料逆流防止具において、前記給油パイ
プの開口へ挿入固定される筒体と、前記筒体の開口縁に
設けられた軸部へ開閉可能に軸支され筒体の開口を密閉
可能な弁体と、前記軸部へ設けられ弁体を前記筒体の開
口側へ付勢する付勢手段と、を有することを特徴として
いる。A fuel backflow prevention device according to claim 1 is a fuel backflow prevention device which is attached to an opening of a fuel supply pipe inserted into a fuel tank, and is fixed to the opening of the fuel supply pipe. A tubular body, a valve body axially supported by a shaft portion provided at an opening edge of the tubular body so as to be openable and closable, and capable of sealing the opening of the tubular body, and a valve body provided on the shaft portion having an opening side of the tubular body And an urging means for urging to.
【０００７】請求項２に記載の燃料逆流防止具は、前記
付勢手段がコイルばねで構成され、その一端が前記筒体
側に係止され、他端が前記弁体の表面に当たり弁体の中
心点が描く開閉軌跡上にあることを特徴としている。In the fuel backflow prevention device according to a second aspect of the present invention, the urging means is constituted by a coil spring, one end of which is locked to the cylinder body side, and the other end abuts on the surface of the valve body, and the center of the valve body. The feature is that it is on the opening and closing locus drawn by dots.
【０００８】請求項３に記載の燃料逆流防止具は、前記
弁体の外周部と係合可能なリング状の段部が、前記筒体
の開口に形成されたことを特徴としている。The fuel backflow preventer according to claim 3 is characterized in that a ring-shaped step portion engageable with the outer peripheral portion of the valve body is formed in the opening of the cylindrical body.
【０００９】[0009]
【作用】請求項１に記載の燃料逆流防止具では、その筒
体が、燃料タンクに挿入された給油パイプの開口に挿入
固定される。このため、給油パイプに複雑な加工を行う
必要がなくなる。In the fuel backflow preventer according to the first aspect of the present invention, the tubular body is inserted and fixed in the opening of the fuel supply pipe inserted in the fuel tank. Therefore, it is not necessary to perform complicated processing on the oil supply pipe.
【００１０】この筒体の開口には、開閉可能に弁体が軸
支されており、筒体の開口を密閉できるようになってい
る。また、付勢手段によって、弁体は、筒体の開口側へ
付勢されている。従って、従来の錘式の逆流防止具と比
較すると、重量との関係を考慮する必要がないので取付
の自由度が大きくなる。A valve element is rotatably supported by the opening of the cylindrical body so that the opening of the cylindrical body can be sealed. Further, the valve body is biased toward the opening side of the tubular body by the biasing means. Therefore, as compared with the conventional weight-type backflow preventive device, it is not necessary to consider the relationship with the weight, so that the degree of freedom in mounting is increased.
【００１１】また、従来のように軸部を弁体から離れた
位置に設ける必要がないので、軸部の付近に働く燃料の
圧力で弁体が不用意に開くということもなくなる。Further, since it is not necessary to provide the shaft portion at a position away from the valve body as in the conventional case, the valve body does not accidentally open due to the pressure of the fuel working near the shaft portion.
【００１２】請求項２に記載の燃料逆流防止具では、さ
らに、コイルばねの一端が筒体側に係止され、他端が弁
体の表面に当たり、弁体を筒体の開口に押し付けてい
る。In the fuel backflow prevention device according to the second aspect of the present invention, one end of the coil spring is further locked to the cylinder body side and the other end contacts the surface of the valve body, and the valve body is pressed against the opening of the cylinder body.
【００１３】そして、コイルばねの他端が弁体の中心点
が描く開閉軌跡上にあることで、押圧力が弁体に均等に
作用し、弁体のガタ付きがなくなる。Since the other end of the coil spring is on the opening / closing locus drawn by the center point of the valve element, the pressing force acts evenly on the valve element and the rattling of the valve element is eliminated.
【００１４】請求項３に記載の燃料逆流防止具では、さ
らに、筒体の開口にリング状の段部が形成され、弁体の
外周部が係合するようになっている。このため、弁体が
筒体の開口からずれる事がない。In the fuel backflow preventer according to the third aspect, further, a ring-shaped step portion is formed in the opening of the cylindrical body so that the outer peripheral portion of the valve body is engaged. Therefore, the valve body will not be displaced from the opening of the cylindrical body.
【００１５】[0015]
【実施例】図５に示すように、給油パイプ１２は、車両
に搭載された燃料タンク１０の上部の隅部から斜め下方
向へ挿入されている。図３に示すように、この給油パイ
プ１２の開口には、燃料逆流防止具１６を構成する筒体
１８が挿入されている。この筒体１８の開口側面は、コ
字状に切り込まれ弾性片２０とされている。この弾性片
２０の中央部には爪２２が突設され、筒体１８が給油パ
イプ１２へ挿入されたとき、給油パイプ１２の外周面に
穿設された係止孔１４に係止されるようになっている。
これによって、燃料逆流防止具１６をワンタッチで給油
パイプ１２に取付けることができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 5, a refueling pipe 12 is inserted obliquely downward from the upper corner of a fuel tank 10 mounted on a vehicle. As shown in FIG. 3, a cylinder 18 that constitutes the fuel backflow preventive tool 16 is inserted into the opening of the refueling pipe 12. The side surface of the opening of the cylindrical body 18 is cut into a U-shape to form an elastic piece 20. A claw 22 is projectingly provided at a central portion of the elastic piece 20 so that when the tubular body 18 is inserted into the oil supply pipe 12, it is engaged with an engagement hole 14 formed in an outer peripheral surface of the oil supply pipe 12. It has become.
As a result, the fuel backflow preventive tool 16 can be attached to the refueling pipe 12 with one touch.
【００１６】一方、筒体１８の開口縁から、鍔２４が外
側に張り出している。鍔２４の外周部には、リング状の
フランジ２６が形成されており、筒体１８との間に給油
パイプ１２の外周端と係合する環状の係合溝２８を、ま
た、鍔２４との間に傾斜面を有する段部２４Ａを構成し
ている。On the other hand, a brim 24 projects outward from the opening edge of the cylindrical body 18. A ring-shaped flange 26 is formed on the outer peripheral portion of the collar 24, and an annular engagement groove 28 that engages with the outer peripheral end of the oil supply pipe 12 is formed between the flange 24 and the tubular body 18, and is also formed. A step portion 24A having an inclined surface therebetween is configured.
【００１７】この段部２４Ａには、円板状の弁体３０の
外周部が係合し、筒体１８の開口を密閉して、給油パイ
プ１２への燃料の逆流を防止するようになっている。ま
た、弁体３０の外周部は中心に向かって傾斜する恰好で
縁取りされており、段部２４Ａの傾斜面と当接するよう
になっている。The stepped portion 24A is engaged with the outer peripheral portion of the disc-shaped valve body 30 to seal the opening of the cylindrical body 18 and prevent the reverse flow of fuel to the fuel supply pipe 12. There is. Further, the outer peripheral portion of the valve element 30 is framed with a shape that is inclined toward the center, and is in contact with the inclined surface of the step portion 24A.
【００１８】また、弁体３０の表面には、補強用の２条
のリブ３２、３４が形成されている。このリブ３２、３
４は、弁体３０の中心点から一定の間隔をおいて、平行
に弁体３０の外側にまで延長されている。リブ３４の端
部には、リブ３２に向かって屈曲する支持壁３６が形成
されている。この支持壁３６の終端とリブ３２の端部と
から、弁体３０の外側へ突出する軸体３８が形成されて
いる。換言すれば、この軸体３８は、弁体３０の中心点
が描く開閉軌跡上から横にオフセットされた位置に形成
されている。また、軸体３８の終端には、ストッパー３
８Ａ設けられ、後述するベース板４０に当たって、弁体
３０の開度を９０°に制限している（図３参照） 一方、筒体１８の開口に設けられたフランジ２６には、
外側へ張り出すベース板４０が設けられており、このベ
ース板４０の両端には、側板４２、４４が立設されてい
る。この側板４２、４４には、軸体３８を軸支するシャ
フト４６の両端が支持されている。Further, two reinforcing ribs 32 and 34 are formed on the surface of the valve body 30. These ribs 32, 3
Reference numeral 4 extends parallel to the outside of the valve body 30 at a constant distance from the center of the valve body 30. A support wall 36 that bends toward the rib 32 is formed at the end of the rib 34. A shaft body 38 projecting to the outside of the valve body 30 is formed from the end of the support wall 36 and the end of the rib 32. In other words, the shaft body 38 is formed at a position laterally offset from the opening / closing locus drawn by the center point of the valve body 30. The stopper 3 is provided at the end of the shaft 38.
8A is provided and hits a base plate 40 described later to limit the opening degree of the valve body 30 to 90 ° (see FIG. 3). On the other hand, the flange 26 provided at the opening of the tubular body 18 is
A base plate 40 that projects outward is provided, and side plates 42 and 44 are provided upright at both ends of the base plate 40. Both ends of a shaft 46 that supports the shaft 38 are supported by the side plates 42 and 44.
【００１９】このシャフト４６は、図５に示すように、
軸体３８に貫通される部位が大径とされ、また、側板４
２側には、ストッパー４８が形成されている。このスト
ッパー４８は、シャフト４６に挿通されたコイルばね５
０の軸方向へのズレを防止している。This shaft 46, as shown in FIG.
The part penetrated by the shaft 38 has a large diameter, and the side plate 4
A stopper 48 is formed on the second side. The stopper 48 is the coil spring 5 inserted into the shaft 46.
It prevents the displacement of 0 in the axial direction.
【００２０】コイルばね５０の一端は、ベース板４０に
形成された切欠５２に係止され、また、他端は、支持壁
３６に形成された切欠５４に係止されている。これによ
って、弁体３０を筒体１８の開口へ付勢する押圧力を付
与している。さらに、コイルばね５０の他端の先端部５
０Ａは、図２に示すように、弁体３０の中心点を指して
おり、押圧力が弁体３０全体に均等に作用するようにな
っている。One end of the coil spring 50 is locked in a notch 52 formed in the base plate 40, and the other end is locked in a notch 54 formed in the support wall 36. As a result, a pressing force that urges the valve body 30 toward the opening of the cylindrical body 18 is applied. Further, the tip portion 5 at the other end of the coil spring 50
As shown in FIG. 2, 0A indicates the center point of the valve body 30, and the pressing force acts uniformly on the entire valve body 30.
【００２１】次に、本実施例に係る燃料逆流防止具の作
用を説明する。燃料逆流防止具１６の給油パイプ１２へ
の取付けは、筒体１８を給油パイプ１２の開口から挿入
することで行われる。このとき、弾性片２０の爪２２が
給油パイプ１２の内壁に押されて弾性片２０が内側へ弾
性変形し、爪２２が係止孔１４に至ると、弾性復帰して
爪２２が係止孔１４に係止される。また、このとき、給
油パイプ１２の開口縁が係合溝２８に係合して、燃料逆
流防止具１６が給油パイプ１２に取付けられる。Next, the operation of the fuel backflow preventer according to this embodiment will be described. The fuel backflow preventive tool 16 is attached to the refueling pipe 12 by inserting the tubular body 18 from the opening of the refueling pipe 12. At this time, when the claw 22 of the elastic piece 20 is pushed by the inner wall of the oil supply pipe 12 and the elastic piece 20 is elastically deformed inward and the claw 22 reaches the locking hole 14, the claw 22 is elastically restored and the claw 22 is locked. 14 is locked. At this time, the opening edge of the fuel supply pipe 12 engages with the engagement groove 28, and the fuel backflow preventive tool 16 is attached to the fuel supply pipe 12.
【００２２】このように、給油パイプ１２に特別な加工
を行うことなく、筒体１８が給油パイプ１２へワンタッ
チで固定される。In this way, the cylinder 18 is fixed to the oil supply pipe 12 with one touch without special processing of the oil supply pipe 12.
【００２３】ここで、給油パイプ１２から給油が行われ
ると、流れ込む燃料の圧力がコイルばね５０の付勢力に
抗して、弁体３０を開き、燃料が燃料タンク１０内へ供
給され、給油を停止すると、コイルばね５０の付勢力で
弁体３０が閉じる。When refueling is performed from the refueling pipe 12, the pressure of the inflowing fuel resists the biasing force of the coil spring 50 and opens the valve body 30 to supply the fuel into the fuel tank 10 for refueling. When stopped, the valve element 30 is closed by the biasing force of the coil spring 50.
【００２４】従って、従来の錘式の逆流防止具と比較す
ると、重量との関係を考慮する必要がないので取付の自
由度が大きくなり、燃料タンク１０の上方から給油パイ
プ１２を挿入することもできる。Therefore, as compared with the conventional weight-type backflow preventive, it is not necessary to consider the relationship with the weight, so that the degree of freedom in mounting is increased, and the refueling pipe 12 may be inserted from above the fuel tank 10. it can.
【００２５】次に、車両の急発進などで燃料タンク１０
内の燃料が揺れても、筒体１８の段部２４Ａに弁体３０
の外周部が係合しているので、弁体３０が筒体１８の開
口からずれることがない。さらに、弁体３０は給油パイ
プ１２の外形よりはみ出していないので、従来のよう
に、燃料タンク１０内の燃料の圧力が裏面から作用する
ことがない。このため、弁体３０が不用意に開いてバタ
付くということがない。Next, when the vehicle suddenly starts, the fuel tank 10
Even if the fuel inside is shaken, the valve body 30
Since the outer peripheral portion of the valve body 30 is engaged, the valve body 30 is not displaced from the opening of the cylindrical body 18. Further, since the valve body 30 does not extend beyond the outer shape of the fuel supply pipe 12, the pressure of the fuel in the fuel tank 10 does not act from the back surface as in the conventional case. Therefore, the valve body 30 does not open accidentally and flutter.
【００２６】また、コイルばね５０の他端が弁体３０の
中心点が描く開閉軌跡上にあることで、押圧力が弁体３
０に均等に作用し、弁体３０のガタ付きがなくなる。な
お、押圧力を弁体３０に均等に作用させる方法として、
軸体３８をオフセットさせずに、軸体３８を弁体３０の
中心点が描く開閉軌跡上に持ってきて、２つのコイルば
ね５０を軸体３８の両側に取付けることも考えられる。Since the other end of the coil spring 50 is on the opening / closing locus drawn by the center point of the valve body 30, the pressing force is applied to the valve body 3.
It acts evenly on 0, and rattling of the valve body 30 is eliminated. In addition, as a method of applying the pressing force to the valve body 30 uniformly,
Without offsetting the shaft body 38, it is also possible to bring the shaft body 38 on the opening / closing locus drawn by the center point of the valve body 30 and attach the two coil springs 50 to both sides of the shaft body 38.
【００２７】[0027]
【発明の効果】本発明は以上のような構成としたので、
給油パイプを複雑な加工をする必要がなく、取付自由度
が大きく、燃料の圧力によって弁体がバタつくことがな
い。Since the present invention has the above-mentioned structure,
There is no need for complicated processing of the oil supply pipe, there is a large degree of freedom in mounting, and the valve body does not flutter due to fuel pressure.
【図１】本実施例に係る燃料逆流防止具の斜視図であ
る。FIG. 1 is a perspective view of a fuel backflow preventer according to the present embodiment.
【図２】本実施例に係る燃料逆流防止具の正面図であ
る。FIG. 2 is a front view of a fuel backflow preventer according to the present embodiment.
【図３】本実施例に係る燃料逆流防止具が給油パイプに
取付いた状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the fuel backflow preventive tool according to the present embodiment is attached to an oil supply pipe.
【図４】本実施例に係る燃料逆流防止具が給油パイプに
取付いた状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which the fuel backflow preventer according to the present embodiment is attached to an oil supply pipe.
【図５】本実施例に係る燃料逆流防止具と燃料タンクと
の関係を示した断面図である。FIG. 5 is a cross-sectional view showing the relationship between the fuel backflow preventer and the fuel tank according to the present embodiment.
【図６】従来の燃料逆流防止具を示す概略図である。FIG. 6 is a schematic view showing a conventional fuel backflow prevention device.
１８ 筒体 ２４Ａ 段部 ３０ 弁体 ５０ コイルばね（付勢手段） 18 Cylindrical body 24A Step portion 30 Valve body 50 Coil spring (biasing means)
Claims (3)
口に取付けられる燃料逆流防止具において、 前記給油パイプの開口へ挿入固定される筒体と、前記筒
体の開口縁に設けられた軸部へ開閉可能に軸支され筒体
の開口を密閉可能な弁体と、前記軸部へ設けられ弁体を
前記筒体の開口側へ付勢する付勢手段と、を有すること
を特徴とする燃料逆流防止具。1. A fuel backflow preventive device attached to an opening of a fuel supply pipe inserted into a fuel tank, wherein a tubular body inserted into and fixed to the opening of the fuel supply pipe and a shaft portion provided at an opening edge of the tubular body. A valve body that is openably and closably rotatably supported and that can seal the opening of the tubular body; and a biasing unit that is provided on the shaft portion and biases the valve body toward the opening side of the tubular body. Fuel backflow prevention device.
の一端が前記筒体側に係止され、他端が前記弁体の表面
に当たり弁体の中心点が描く開閉軌跡上にあることを特
徴とする請求項１に記載の燃料逆流防止具。2. The urging means is composed of a coil spring, one end of which is locked to the cylinder body side, and the other end of which is on the opening / closing locus drawn by the center point of the valve body when it hits the surface of the valve body. The fuel backflow preventer according to claim 1, which is characterized in that.
段部が、前記筒体の開口に形成されたことを特徴とする
請求項１または請求項２に記載の燃料逆流防止具。3. The fuel backflow prevention according to claim 1 or 2, wherein a ring-shaped step portion that can be engaged with the outer peripheral portion of the valve body is formed in the opening of the cylindrical body. Ingredient
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6214074A JPH0872565A (en) | 1994-09-07 | 1994-09-07 | Fuel counterflow preventing tool |
| KR1019950006256A KR960010317A (en) | 1994-09-07 | 1995-03-23 | Fuel backflow prevention mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6214074A JPH0872565A (en) | 1994-09-07 | 1994-09-07 | Fuel counterflow preventing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0872565A true JPH0872565A (en) | 1996-03-19 |
Family
ID=16649821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6214074A Pending JPH0872565A (en) | 1994-09-07 | 1994-09-07 | Fuel counterflow preventing tool |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0872565A (en) |
| KR (1) | KR960010317A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1128938A (en) * | 1997-07-14 | 1999-02-02 | Piolax Inc | Check valve |
| JP2007008295A (en) * | 2005-06-29 | 2007-01-18 | Piolax Inc | Fuel check valve |
| JP2007022216A (en) * | 2005-07-13 | 2007-02-01 | Piolax Inc | Fuel check-valve |
| JP2007022217A (en) * | 2005-07-13 | 2007-02-01 | Piolax Inc | Fuel check-valve |
| WO2008143317A1 (en) * | 2007-05-24 | 2008-11-27 | Nifco Inc. | Opening/closing lid attachment structure |
| JP2010132117A (en) * | 2008-12-04 | 2010-06-17 | Piolax Inc | Check valve for fuel tank |
| JP2013148121A (en) * | 2012-01-17 | 2013-08-01 | Nifco Inc | Valve device |
| JP2019127149A (en) * | 2018-01-24 | 2019-08-01 | いすゞ自動車株式会社 | Fuel tank |
-
1994
- 1994-09-07 JP JP6214074A patent/JPH0872565A/en active Pending
-
1995
- 1995-03-23 KR KR1019950006256A patent/KR960010317A/en not_active Application Discontinuation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1128938A (en) * | 1997-07-14 | 1999-02-02 | Piolax Inc | Check valve |
| JP2007008295A (en) * | 2005-06-29 | 2007-01-18 | Piolax Inc | Fuel check valve |
| JP4576298B2 (en) * | 2005-06-29 | 2010-11-04 | 株式会社パイオラックス | Fuel check valve |
| JP2007022216A (en) * | 2005-07-13 | 2007-02-01 | Piolax Inc | Fuel check-valve |
| JP2007022217A (en) * | 2005-07-13 | 2007-02-01 | Piolax Inc | Fuel check-valve |
| JP4621084B2 (en) * | 2005-07-13 | 2011-01-26 | 株式会社パイオラックス | Fuel check valve |
| JP4657040B2 (en) * | 2005-07-13 | 2011-03-23 | 株式会社パイオラックス | Fuel check valve |
| WO2008143317A1 (en) * | 2007-05-24 | 2008-11-27 | Nifco Inc. | Opening/closing lid attachment structure |
| JP2010132117A (en) * | 2008-12-04 | 2010-06-17 | Piolax Inc | Check valve for fuel tank |
| JP2013148121A (en) * | 2012-01-17 | 2013-08-01 | Nifco Inc | Valve device |
| JP2019127149A (en) * | 2018-01-24 | 2019-08-01 | いすゞ自動車株式会社 | Fuel tank |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960010317A (en) | 1996-04-20 |
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