JP2014092063A - Fuel filter - Google Patents

Fuel filter Download PDF

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JP2014092063A
JP2014092063A JP2012242618A JP2012242618A JP2014092063A JP 2014092063 A JP2014092063 A JP 2014092063A JP 2012242618 A JP2012242618 A JP 2012242618A JP 2012242618 A JP2012242618 A JP 2012242618A JP 2014092063 A JP2014092063 A JP 2014092063A
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filter
cylindrical
fuel
circumferential direction
connecting frame
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Masateru Moriya
昌輝 森谷
Shinichi Iwasaki
真一 岩崎
Kenichi Saito
健一 斎藤
Kosaku Setoriyama
幸作 世取山
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Keihin Corp
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Keihin Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Filtration Of Liquid (AREA)

Abstract

PROBLEM TO BE SOLVED: To surely reinforce a joining portion of a filter mesh while minimizing circulation resistance of a fuel, in a fuel filter configured by mold-joining a cylindrical filter mesh joined to a filter frame made of a synthetic resin and having several opening portion in a circumferential direction, one joining portion in the circumferential direction, and inserted and fixed to a fuel inlet cylinder of an electromagnetic fuel injection valve.SOLUTION: A filter frame 43 integrally has a cylindrical portion 43a, a disc-shaped end wall portion 43b disposed at an interval from the cylindrical portion 43a in an axial direction, and first and second connecting frame portions 43c, 43d connecting one end portion of the cylindrical portion 43a and the end wall portion 43b, and forming opening portions 45, 46 therebetween. The first connecting frame portion 43c in which the joining portion of the filter mesh 44 is buried and supported, has a width along a circumferential direction of the cylindrical portion 43a, larger than the second connecting frame portion 43d disposed on a position opposed to the first connecting frame portion 43c.

Description

本発明は、燃料流通用の開口部を周方向複数箇所に有する合成樹脂製のフィルタ枠に、周方向１箇所の接合部で接合されて円筒状に丸められるフィルタメッシュが、その周方向複数箇所を前記開口部に臨ませるようにしてモールド結合されて成り、電磁式燃料噴射弁が有する燃料入口筒内に挿入、固定される燃料フィルタに関する。   In the present invention, a filter mesh that is joined to a synthetic resin filter frame having a plurality of openings for fuel circulation in a circumferential direction at one joint in the circumferential direction and rounded into a cylindrical shape is provided at a plurality of places in the circumferential direction. And a fuel filter that is inserted and fixed in a fuel inlet cylinder of an electromagnetic fuel injection valve.

周方向３箇所に開口部が配置されるフィルタ枠に、フィルタメッシュがモールド結合される燃料フィルタが、たとえば特許文献１で既に知られている。   A fuel filter in which a filter mesh is mold-coupled to a filter frame in which openings are arranged at three locations in the circumferential direction is already known from Patent Document 1, for example.

特開平０８−３１２４９４号公報JP 08-31494 A

ところで燃料フィルタを流通する燃料の流通抵抗は小さく抑えたいと言う要望があり、フィルタ枠の周方向複数箇所に配置される開口部の開口面積は極力大きくしたい。一方、フィルタメッシュの周方向複数箇所は開口部の周方向両側でフィルタ枠に支持されるものであり、特にフィルタメッシュの接合部は、フィルタ枠で補強してフィルタメッシュの支持強度も確保しておきたいので開口部の開口面積を単純に広げることもできない。   By the way, there is a desire to suppress the flow resistance of the fuel flowing through the fuel filter, and it is desired to increase the opening area of the openings arranged at a plurality of locations in the circumferential direction of the filter frame as much as possible. On the other hand, a plurality of locations in the circumferential direction of the filter mesh are supported by the filter frame on both sides in the circumferential direction of the opening. In particular, the joint portion of the filter mesh is reinforced with the filter frame to secure the support strength of the filter mesh. It is not possible to simply increase the opening area of the opening because it is desired to occur.

本発明は、かかる事情に鑑みてなされたものであり、燃料の流通抵抗を極力小さくしつつフィルタメッシュの接合部も確実に補強し得るようにした燃料フィルタを提供することを目的とする。   The present invention has been made in view of such circumstances, and an object of the present invention is to provide a fuel filter that can reliably reinforce the joint portion of the filter mesh while minimizing the flow resistance of the fuel.

上記目的を達成するために、本発明は、燃料流通用の開口部を周方向複数箇所に有する合成樹脂製のフィルタ枠に、周方向１箇所の接合部で接合されて円筒状に丸められるフィルタメッシュが、その周方向複数箇所を前記開口部に臨ませるようにしてモールド結合されて成り、電磁式燃料噴射弁が有する燃料入口筒内に挿入、固定される燃料フィルタにおいて、前記フィルタ枠が、円筒部と、該円筒部から軸方向に間隔をあけて配置された円盤状の端壁部と、前記円筒部および前記端壁部間を結ぶとともに相互間に前記開口部を形成する第１および第２連結枠部とを一体に有し、前記フィルタメッシュの接合部が埋封、支持される第１連結枠部は、第１連結枠部に対向する位置に配置される第２連結枠部よりも前記円筒部の周方向に沿う幅が大きくなるように形成されることを特徴とする。   In order to achieve the above object, the present invention provides a filter that is joined to a synthetic resin filter frame having a plurality of openings for fuel circulation at a plurality of locations in the circumferential direction at one junction in the circumferential direction and rounded into a cylindrical shape. In the fuel filter, the mesh is formed by being mold-bonded so that a plurality of locations in the circumferential direction face the opening, and inserted and fixed in the fuel inlet cylinder of the electromagnetic fuel injection valve. A cylindrical portion, a disc-shaped end wall portion disposed at an interval in the axial direction from the cylindrical portion, a first portion that connects between the cylindrical portion and the end wall portion and that forms the opening portion therebetween. A second connection frame portion that is integrally disposed with a second connection frame portion, and in which the joint portion of the filter mesh is embedded and supported, is disposed at a position facing the first connection frame portion. Than the width along the circumferential direction of the cylindrical portion Characterized in that it is formed so as to hear.

本発明の上記構成によれば、燃料流通用の開口部は、第１および第２連結枠部相互間の２箇所に形成されることになり、開口部の開口面積を大きくして燃料の流通抵抗を小さく抑えることができる。しかもフィルタメッシュの接合部が埋封、支持される第１連結枠部が、第２連結枠部よりも幅広に形成されるので、第１連結枠部によるフィルタメッシュの接合部の補強効果を高め、フィルタメッシュの接合部を確実に補強することができる。   According to the above-described configuration of the present invention, the fuel circulation openings are formed at two locations between the first and second connecting frame portions, and the opening area of the opening is increased to allow fuel circulation. Resistance can be kept small. In addition, since the first connecting frame portion in which the joint portion of the filter mesh is buried and supported is formed wider than the second connecting frame portion, the reinforcing effect of the joint portion of the filter mesh by the first connecting frame portion is enhanced. The joint portion of the filter mesh can be reliably reinforced.

電磁式燃料噴射弁の縦断面図である。It is a longitudinal cross-sectional view of an electromagnetic fuel injection valve. 図１の２−２線断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG. 図２の３ー３線断面図である。FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2. 図３の４−４線断面図である。FIG. 4 is a cross-sectional view taken along line 4-4 of FIG.

以下、本発明の実施の形態について添付の図１〜図４を参照しながら説明すると、先ず図１において、エンジンＥのシリンダヘッド１１には、燃焼室１２に開口する装着孔１３が設けられ、この装着孔１３に、前記燃焼室１２に燃料を噴射するための電磁式燃料噴射弁Ｖが装着される。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4 attached. First, in FIG. 1, a cylinder head 11 of an engine E is provided with a mounting hole 13 that opens to a combustion chamber 12. An electromagnetic fuel injection valve V for injecting fuel into the combustion chamber 12 is mounted in the mounting hole 13.

前記電磁式燃料噴射弁Ｖの弁ハウジング１４は、金属製である円筒状の弁ハウジング主体１５と、この弁ハウジング主体１５の一端部に嵌合して溶接される有底円筒状の弁座部材１６と、前記弁ハウジング主体１５がその他端に有する大径部１５ａの外周に一端部が嵌合して溶接される磁性円筒体１７と、該磁性円筒体１７の他端に一端が同軸に結合される非磁性円筒体１８とで構成される。前記非磁性円筒体１８の他端には円筒状である固定コア１９の一端が同軸に結合され、該固定コア１９の他端には燃料入口筒２０が同軸にかつ一体に連設される。   The valve housing 14 of the electromagnetic fuel injection valve V includes a cylindrical valve housing main body 15 made of metal and a bottomed cylindrical valve seat member that is fitted and welded to one end of the valve housing main body 15. 16, a magnetic cylindrical body 17 having one end fitted to the outer periphery of the large diameter portion 15 a of the valve housing main body 15 at the other end, and one end coaxially coupled to the other end of the magnetic cylindrical body 17. The nonmagnetic cylindrical body 18 is made up of. One end of a cylindrical fixed core 19 is coaxially coupled to the other end of the nonmagnetic cylindrical body 18, and a fuel inlet cylinder 20 is coaxially and integrally connected to the other end of the fixed core 19.

前記磁性円筒体１７の軸方向中間部には半径方向外方に張り出すフランジ部１７ａが一体に形成されており、このフランジ部１７ａが、前記シリンダヘッド１１の外面への前記装着孔１３の開口端部に設けられて外方に臨む環状段部１３ａにクッション材２１を介して支承される。一方、前記燃料入口筒２０の他端部には、前記シリンダヘッド１１に固定される燃料分配管２２が環状のシール部材２３を介して嵌装されており、この燃料分配管２２および前記固定コア１９間に弾性保持部材２４が介装され、電磁式燃料噴射弁Ｖはシリンダヘッド１１および弾発保持部材２４間に挟持されることになる。   A flange portion 17 a that projects outward in the radial direction is integrally formed at an axially intermediate portion of the magnetic cylindrical body 17, and this flange portion 17 a opens the mounting hole 13 to the outer surface of the cylinder head 11. It is supported via a cushion material 21 on an annular step 13a provided at the end and facing outward. On the other hand, a fuel distribution pipe 22 fixed to the cylinder head 11 is fitted to the other end portion of the fuel inlet cylinder 20 via an annular seal member 23, and the fuel distribution pipe 22 and the fixed core are fitted. The elastic holding member 24 is interposed between the electromagnetic fuel injection valves V and the electromagnetic fuel injection valve V is sandwiched between the cylinder head 11 and the elastic holding member 24.

前記弁座部材１６には、テーパ状の弁座２６と、該弁座２６の中心近傍に開口する複数の燃料噴孔２７とが設けられる。また前記弁座２６に着座して前記燃料噴孔２７を閉鎖し得る球状の弁体２８が前記弁座部材１６内に摺動可能に収容されており、この弁体２８は、前記弁ハウジング１４内に同軸に収容される弁軸２９の一端に結合され、前記弁体２８の外周には燃料の通過を許容する複数の平坦面２８ａが形成される。前記弁軸２９の他端寄りには、前記固定コア１９の一端に対向するとともに前記磁性円筒体１７に摺動可能に嵌合される可動コア３０が嵌合、固着される。   The valve seat member 16 is provided with a tapered valve seat 26 and a plurality of fuel injection holes 27 opening near the center of the valve seat 26. A spherical valve body 28 that can be seated on the valve seat 26 and close the fuel injection hole 27 is slidably accommodated in the valve seat member 16. The valve body 28 is slidably accommodated in the valve housing 14. A plurality of flat surfaces 28 a are formed on the outer periphery of the valve body 28 to allow the passage of fuel. Near the other end of the valve shaft 29, a movable core 30 that is opposed to one end of the fixed core 19 and is slidably fitted to the magnetic cylindrical body 17 is fitted and fixed.

前記可動コア３０には、前記固定コア１９側に突出するようにして非磁性材料から成るカラー３１が埋設されており、このカラー３１が固定コア１９に当接することで弁体２８および弁軸２９の開弁ストロークが規定される。   A collar 31 made of a non-magnetic material is embedded in the movable core 30 so as to protrude toward the fixed core 19, and the valve body 28 and the valve shaft 29 are brought into contact with the fixed core 19. The valve opening stroke is defined.

可動コア３０には、固定コア１９内を弁ハウジング１４内に連通させる複数の連通孔４７が設けられる。また固定コア１９の他端部内には、パイプ状のリテーナ３２が圧入されており、このリテーナ３２および前記可動コア３０間にコイル状の弁ばね３３が縮設され、該弁ばね３３が発揮するばね力によって弁体２８および弁軸２９は弁体２８が弁座２６に着座する側に付勢される。   The movable core 30 is provided with a plurality of communication holes 47 that allow the inside of the fixed core 19 to communicate with the valve housing 14. A pipe-shaped retainer 32 is press-fitted into the other end portion of the fixed core 19, and a coil-shaped valve spring 33 is contracted between the retainer 32 and the movable core 30, and the valve spring 33 exhibits. The valve body 28 and the valve shaft 29 are biased toward the side on which the valve body 28 is seated on the valve seat 26 by the spring force.

前記磁性円筒体１７の他端部から前記固定コア１９に至る外周面にはボビン３４が嵌合され、該ボビン３４とともにコイル組立体３６を構成するコイル３５が前記ボビン３４に嵌装される。前記コイル組立体３６は、コイルハウジング３７に収容されており、該コイルハウジング３７の一端部は前記磁性円筒体１７のフランジ部１７ａに当接して溶接される。   A bobbin 34 is fitted to the outer peripheral surface from the other end of the magnetic cylindrical body 17 to the fixed core 19, and a coil 35 that constitutes a coil assembly 36 together with the bobbin 34 is fitted to the bobbin 34. The coil assembly 36 is accommodated in a coil housing 37, and one end portion of the coil housing 37 is in contact with and welded to the flange portion 17 a of the magnetic cylindrical body 17.

前記コイルハウジング３７の他端部外周には環状のアンカ溝３８が形成され、前記固定コア１９の外周には複数条の環状溝３９が形成されており、アンカ溝３８を含む前記コイルハウジング３７の他端部から前記環状溝３９を含む固定コア１９の他端部に至る部分は合成樹脂から成る被覆層４０で覆われる。この被覆層４０には、前記コイル３５に連なる端子４１を保持するカプラ４０ａが一側方に突出するようにして一体に形成される。   An annular anchor groove 38 is formed on the outer periphery of the other end portion of the coil housing 37, and a plurality of annular grooves 39 are formed on the outer periphery of the fixed core 19, and the coil housing 37 including the anchor groove 38 is formed. A portion from the other end to the other end of the fixed core 19 including the annular groove 39 is covered with a coating layer 40 made of synthetic resin. A coupler 40a for holding the terminal 41 connected to the coil 35 is integrally formed on the covering layer 40 so as to protrude to one side.

図２〜図４を併せて参照して、前記燃料入口筒２０内には燃料フィルタ４２が挿入、固定され、該燃料フィルタ４２は、燃料流通用の開口部４５，４６を周方向２箇所に有する合成樹脂製のフィルタ枠４３に、フィルタメッシュ４４が、その周方向２箇所を前記開口部４５，４６に臨ませるようにしてモールド結合されて成る。   2 to 4, a fuel filter 42 is inserted and fixed in the fuel inlet cylinder 20, and the fuel filter 42 has openings 45 and 46 for fuel circulation at two locations in the circumferential direction. A filter mesh 44 is molded and bonded to a filter frame 43 made of synthetic resin so that two openings in the circumferential direction face the openings 45 and 46.

前記フィルタ枠４３は、前記燃料入口筒２０内に圧入される円筒部４３ａと、該円筒部４３ａから軸方向に間隔をあけて配置された円盤状の端壁部４３ｂと、前記円筒部４３ａの一端部および前記端壁部４３ｂ間を結ぶとともに相互間に前記開口部４５，４６を形成する第１および第２連結枠部４３ｃ，４３ｄとを一体に有する。   The filter frame 43 includes a cylindrical portion 43a that is press-fitted into the fuel inlet cylinder 20, a disc-shaped end wall portion 43b that is spaced from the cylindrical portion 43a in the axial direction, and a cylindrical portion 43a. The first and second connecting frame portions 43c and 43d that connect the one end portion and the end wall portion 43b and form the openings 45 and 46 therebetween are integrally provided.

また前記フィルタ枠４３は、前記円筒部４３ａの他端から半径方向外方に張り出すフランジ部４３ｅを一体に有しており、このフランジ部４３ｅを前記燃料入口筒２０の他端に当接させるまで前記円筒部４３ａが前記燃料入口筒２０内に圧入される。   The filter frame 43 is integrally provided with a flange portion 43e that projects radially outward from the other end of the cylindrical portion 43a, and this flange portion 43e is brought into contact with the other end of the fuel inlet cylinder 20. The cylindrical portion 43a is press-fitted into the fuel inlet cylinder 20 until the cylinder portion 43a is reached.

また前記円筒部４３ａおよび前記フランジ部４３ｅには、金属製の補強部材４８がモールド結合される。この補強部材４８は、前記円筒部４３ａの外形に対応した内径を有する円筒状の補強部材主部４８ａと、前記円筒部４８ａ内に食い込むようにして前記補強部材主部４８ａの一端から半径方向内方に張り出す内向き鍔部４８ｂと、前記フランジ部４３ｅに一部が埋封されるようにして前記補強部材主部４８ａの他端から半径方向外方に張り出す外向き鍔部４８ｃとを一体に有し、前記フィルタ枠４３における前記フランジ部４３ｅの内周および前記円筒部４３ａの周方向複数箇所たとえば４箇所には、前記補強部材４８の一部を臨ませる肉抜き部４７が形成される。   A metal reinforcing member 48 is mold-bonded to the cylindrical portion 43a and the flange portion 43e. The reinforcing member 48 includes a cylindrical reinforcing member main portion 48a having an inner diameter corresponding to the outer shape of the cylindrical portion 43a, and a radially inner portion from one end of the reinforcing member main portion 48a so as to bite into the cylindrical portion 48a. An inward flange portion 48b projecting outward, and an outward flange portion 48c projecting radially outward from the other end of the reinforcing member main portion 48a so as to be partially embedded in the flange portion 43e. In the filter frame 43, a hollow portion 47 is formed at the inner periphery of the flange portion 43e and at a plurality of circumferential locations of the cylindrical portion 43a, for example, at four locations in the filter frame 43 so that a part of the reinforcing member 48 faces. The

ところで前記円筒部４３ａの外径よりも前記端壁部４３ｂの外径は小さく設定されており、燃料フィルタ４２は、前記燃料入口筒２０の内周との間の間隔が広くなるようにして前記リテーナ３２側に近づくにつれて小径となるように形成される。   By the way, the outer diameter of the end wall portion 43b is set smaller than the outer diameter of the cylindrical portion 43a, and the fuel filter 42 is arranged so that the distance from the inner periphery of the fuel inlet cylinder 20 is increased. It forms so that it may become a small diameter as it approaches the retainer 32 side.

前記フィルタメッシュ４４は、周方向１箇所の接合部４４ａでの突き合わせ溶接で接合されて円筒状に丸められるものであり、前記接合部４４ａが第１連結枠部４３ｃに埋封、支持されるようにして、前記フィルタ枠４３における前記円筒部４３ａ、前記端壁部４３ｂ、第１連結枠部４３ｃおよび第２連結枠部４３ｄにモールド結合される。   The filter mesh 44 is joined by butt welding at one joint portion 44a in the circumferential direction and rounded into a cylindrical shape, and the joint portion 44a is embedded and supported by the first connection frame portion 43c. Thus, the filter frame 43 is mold-coupled to the cylindrical portion 43a, the end wall portion 43b, the first connection frame portion 43c, and the second connection frame portion 43d.

しかもフィルタメッシュ４４の接合部４４ａが埋封、支持される第１連結枠部４３ｃと、第２連結枠部４３ｄとは、相互に対向する位置に配置されるものであり、第１連結枠部４３ｃが、第２連結枠部４３ｄよりも前記円筒部４３ａの周方向に沿う幅が大きくなるように形成される。すなわち前記円筒部４３ａの周方向に沿う第１連結枠部４３ｃの幅Ｗ１は、前記円筒部４３ａの周方向に沿う第２連結枠部４３ｄの幅Ｗ２よりも大きく設定される。   Moreover, the first connection frame portion 43c and the second connection frame portion 43d in which the joint portion 44a of the filter mesh 44 is embedded and supported are arranged at positions facing each other, and the first connection frame portion. 43c is formed so that the width | variety along the circumferential direction of the said cylindrical part 43a may become larger than the 2nd connection frame part 43d. That is, the width W1 of the first connection frame portion 43c along the circumferential direction of the cylindrical portion 43a is set larger than the width W2 of the second connection frame portion 43d along the circumferential direction of the cylindrical portion 43a.

次にこの実施の形態の作用について説明すると、電磁式燃料噴射弁Ｖの燃料入口筒２０に挿入、固定される燃料フィルタ４２は、合成樹脂製のフィルタ枠４３に、周方向１箇所の接合部４４ａで接合されて円筒状に丸められるフィルタメッシュ４４がモールド結合されて成るものであり、前記フィルタ枠４３が、円筒部４３ａと、該円筒部４３ａから軸方向に間隔をあけて配置された円盤状の端壁部４３ｂと、前記円筒部４３ａの一端部および前記端壁部４３ｂ間を結ぶとともに相互間に開口部４５，４６を形成する第１および第２連結枠部４３ｃ，４３ｄとを一体に有するので、燃料流通用の開口部４５，４６は、第１および第２連結枠部４３ｃ，４３ｄ相互間の２箇所に形成されることになり、開口部４５，４６の開口面積を大きくして燃料の流通抵抗を小さく抑えることができる。   Next, the operation of this embodiment will be described. A fuel filter 42 inserted and fixed in the fuel inlet cylinder 20 of the electromagnetic fuel injection valve V is joined to a filter frame 43 made of synthetic resin at one joint in the circumferential direction. The filter mesh 44 is joined by a mold 44a and rounded into a cylindrical shape, and the filter frame 43 includes a cylindrical portion 43a and a disk arranged at an interval in the axial direction from the cylindrical portion 43a. And the first and second connecting frame portions 43c and 43d that connect the one end portion of the cylindrical portion 43a and the end wall portion 43b and form the openings 45 and 46 therebetween. Therefore, the fuel circulation openings 45 and 46 are formed at two locations between the first and second connection frame portions 43c and 43d, and the opening area of the openings 45 and 46 is increased. The It is possible to reduce the flow resistance of the fee.

しかもフィルタメッシュ４４の接合部４４ａが埋封、支持される第１連結枠部４３ｃが、第１連結枠部４３ｃに対向する位置に配置される第２連結枠部４３ｄよりも前記円筒部４３ａの周方向に沿う幅が大きくなるように形成されるので、第１連結枠部４３ｃによるフィルタメッシュ４４の接合部４４ａの補強効果を高め、フィルタメッシュ４４の接合部４４ａを確実に補強することができる。   In addition, the first connecting frame portion 43c in which the joint portion 44a of the filter mesh 44 is embedded and supported is more of the cylindrical portion 43a than the second connecting frame portion 43d disposed at a position facing the first connecting frame portion 43c. Since it forms so that the width | variety along a circumferential direction may become large, the reinforcement effect of the junction part 44a of the filter mesh 44 by the 1st connection frame part 43c can be heightened, and the junction part 44a of the filter mesh 44 can be reinforced reliably. .

以上、本発明の実施の形態について説明したが、本発明は上記実施の形態に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行うことが可能である。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

２０・・・燃料入口筒
４２・・・燃料フィルタ
４３・・・フィルタ枠
４３ａ・・・円筒部
４３ｂ・・・端壁部
４３ｃ・・・第１連結枠部
４３ｄ・・・第２連結枠部
４４・・・フィルタメッシュ
４４ａ・・・接合部
４５，４６・・・開口部
Ｖ・・・電磁式燃料噴射弁 20 ... Fuel inlet cylinder 42 ... Fuel filter 43 ... Filter frame 43a ... Cylindrical portion 43b ... End wall 43c ... First connection frame portion 43d ... Second connection frame portion 44 ... Filter mesh 44a ... Joint 45, 46 ... Opening V ... Electromagnetic fuel injection valve

Claims (1)

燃料流通用の開口部（４５，４６）を周方向複数箇所に有する合成樹脂製のフィルタ枠（４３）に、周方向１箇所の接合部（４４ａ）で接合されて円筒状に丸められるフィルタメッシュ（４４）が、その周方向複数箇所を前記開口部（４５，４６）に臨ませるようにしてモールド結合されて成り、電磁式燃料噴射弁（Ｖ）が有する燃料入口筒（２０）内に挿入、固定される燃料フィルタにおいて、前記フィルタ枠（４３）が、円筒部（４３ａ）と、該円筒部（４３ａ）から軸方向に間隔をあけて配置された円盤状の端壁部（４３ｂ）と、前記円筒部（４３ａ）の一端部および前記端壁部（４３ｂ）間を結ぶとともに相互間に前記開口部（４５，４６）を形成する第１および第２連結枠部（４３ｃ，４３ｄ）とを一体に有し、前記フィルタメッシュ（４４）の接合部（４４ａ）が埋封、支持される第１連結枠部（４３ｃ）が、第１連結枠部（４３ｃ）に対向する位置に配置される第２連結枠部（４３ｄ）よりも前記円筒部（４３ａ）の周方向に沿う幅が大きくなるように形成されることを特徴とする燃料フィルタ。   A filter mesh that is joined to a synthetic resin filter frame (43) having a plurality of openings (45, 46) for circulating fuel at one joint (44a) in the circumferential direction and rounded into a cylindrical shape. (44) is molded and joined so that a plurality of circumferential positions thereof face the opening (45, 46), and is inserted into the fuel inlet cylinder (20) of the electromagnetic fuel injection valve (V). In the fixed fuel filter, the filter frame (43) includes a cylindrical portion (43a), and a disk-shaped end wall portion (43b) disposed at an interval in the axial direction from the cylindrical portion (43a). The first and second connecting frame parts (43c, 43d) connecting the one end part of the cylindrical part (43a) and the end wall part (43b) and forming the opening part (45, 46) therebetween. And the filter mesh The second connecting frame portion (43d) in which the first connecting frame portion (43c) in which the joint portion (44a) of the nut (44) is embedded and supported is disposed at a position facing the first connecting frame portion (43c). ) Is formed so that a width along the circumferential direction of the cylindrical portion (43a) is larger than that of the cylindrical portion (43a).
JP2012242618A 2012-11-02 2012-11-02 Fuel filter Pending JP2014092063A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017127794A (en) * 2016-01-18 2017-07-27 株式会社ケーヒン Filtration apparatus
CN112403068A (en) * 2019-08-22 2021-02-26 株式会社利富高 Filter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09324717A (en) * 1996-06-07 1997-12-16 Keihin Seiki Mfg Co Ltd Filter in fuel injection valve
JPH1190121A (en) * 1997-09-22 1999-04-06 Nippon Abs Ltd Method for arranging cylindrical filter and filter
JP2002355509A (en) * 2001-05-31 2002-12-10 Nifco Inc Mesh and producing method thereof, and filter using mesh and producing method thereof
JP2011148312A (en) * 2011-02-09 2011-08-04 Nifco Inc Mesh, filter using the same, and method for manufacturing the filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09324717A (en) * 1996-06-07 1997-12-16 Keihin Seiki Mfg Co Ltd Filter in fuel injection valve
JPH1190121A (en) * 1997-09-22 1999-04-06 Nippon Abs Ltd Method for arranging cylindrical filter and filter
JP2002355509A (en) * 2001-05-31 2002-12-10 Nifco Inc Mesh and producing method thereof, and filter using mesh and producing method thereof
JP2011148312A (en) * 2011-02-09 2011-08-04 Nifco Inc Mesh, filter using the same, and method for manufacturing the filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017127794A (en) * 2016-01-18 2017-07-27 株式会社ケーヒン Filtration apparatus
CN112403068A (en) * 2019-08-22 2021-02-26 株式会社利富高 Filter
JP2021030143A (en) * 2019-08-22 2021-03-01 株式会社ニフコ filter
JP7048154B2 (en) 2019-08-22 2022-04-05 株式会社ニフコ filter
CN112403068B (en) * 2019-08-22 2022-06-21 株式会社利富高 Filter

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