WO2016088487A1 - Fuel filter - Google Patents

Fuel filter Download PDF

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Publication number
WO2016088487A1
WO2016088487A1 PCT/JP2015/080404 JP2015080404W WO2016088487A1 WO 2016088487 A1 WO2016088487 A1 WO 2016088487A1 JP 2015080404 W JP2015080404 W JP 2015080404W WO 2016088487 A1 WO2016088487 A1 WO 2016088487A1
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WO
WIPO (PCT)
Prior art keywords
fuel
filter
nonwoven fabric
fuel filter
spunbond nonwoven
Prior art date
Application number
PCT/JP2015/080404
Other languages
French (fr)
Japanese (ja)
Inventor
敏郎 鈴木
弘和 此原
耕史 吉田
洋彰 宮嵜
直亮 橋本
Original Assignee
愛三工業株式会社
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Application filed by 愛三工業株式会社 filed Critical 愛三工業株式会社
Priority to JP2016562352A priority Critical patent/JP6472816B2/en
Publication of WO2016088487A1 publication Critical patent/WO2016088487A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/38—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements with regeneration means
    • 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

Definitions

  • the present invention relates to a fuel filter that is attached to a fuel intake port in a fuel tank of a vehicle such as an automobile or a two-wheeled vehicle, and filters fuel drawn from the fuel intake port.
  • a third invention is a fuel filter according to the first or second invention, wherein a solidified portion is formed in at least a part of the outermost spunbond nonwoven fabric of the filter medium. According to this configuration, the solidified portion formed in the outermost spunbond nonwoven fabric of the filter medium can suppress damage such as fuzz and scratches in the region due to contact with other members.
  • the filter member is formed by folding the filter medium in half, and peripheral portions other than the bent portion are joined to each other by a welded portion.
  • the fuel filter is formed in the peripheral region including the bent portion. According to this configuration, the solidified portion formed in the peripheral region including the bent portion of the filter medium can suppress damage such as fuzz and scratches in the region due to contact with other members.
  • the fifth invention is a fuel filter according to the third or fourth invention, wherein the solidified portion is a coated portion formed on the outermost spunbond nonwoven fabric. According to this configuration, the solidified portion can be easily formed by forming the coating portion on the outermost spunbonded nonwoven fabric.
  • the sixth aspect of the invention is the fuel filter according to the fifth aspect of the invention, wherein the coating portion has a fuel solubility that is dissolved by fuel.
  • the solidified portion is removed by being dissolved by the fuel by using the fuel filter. For this reason, the filtration performance in the solidified part of the outermost spunbonded nonwoven fabric can be regenerated.
  • the eighth invention is the fuel filter according to the third or fourth invention, wherein the solidified portion is a welded portion of the outermost spunbond nonwoven fabric.
  • the welding part as a solidified part can be formed in the outermost spunbonded nonwoven fabric without requiring a separate member.
  • the flat surface of the innermost spunbond nonwoven fabric so as to form the inner surface of the filter member, contact with other members (for example, inner bone members arranged in the inner space of the filter member) Damage such as fuzz and scratches on the inner surface of the filter member can be suppressed.
  • the uneven surface of the innermost spunbond nonwoven fabric faces the nonwoven fabric on the outer layer side of the spunbond nonwoven fabric. For this reason, the fuzz of the uneven surface of the innermost spunbond nonwoven fabric can be suppressed.
  • FIG. 1 is a perspective view showing a fuel pump module according to Embodiment 1.
  • FIG. It is a front view which shows a fuel pump module partially broken. It is a perspective view which shows the filter for fuels. It is a front view which shows the filter for fuels. It is a bottom view which shows the filter for fuels.
  • FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4. It is a perspective view which shows the filter for fuel concerning Embodiment 2.
  • FIG. It is a front view which shows the filter for fuels. It is a bottom view which shows the filter for fuels.
  • FIG. 6 is a front view showing a fuel filter according to a third embodiment. It is a bottom view which shows the filter for fuels.
  • FIG. 11 is a cross-sectional view taken along line XIII-XIII in FIG. 10. It is a perspective view which shows the state in the middle of inserting a fuel pump module in a fuel tank. It is a perspective view which shows the state in the middle of inserting a fuel pump module in a fuel tank It is a front view which shows the filter for fuel concerning Embodiment 4. It is a bottom view which shows the filter for fuels. It is a rear view which shows the filter for fuels.
  • FIG. 9 is a cross-sectional view illustrating a part of a fuel filter according to a fifth embodiment. It is sectional drawing which shows a part of fuel filter concerning Embodiment 6.
  • Embodiment 1 The fuel filter of Embodiment 1 is provided in a fuel pump module that supplies fuel in a fuel tank of a vehicle such as an automobile or a two-wheeled automobile to an internal combustion engine (engine). Therefore, after describing the fuel pump module, the fuel filter will be described.
  • FIG. 1 is a perspective view showing a fuel supply device, and FIG. The fuel pump module will be described with reference to the top, bottom, left and right in the front view of FIG.
  • the fuel pump module 10 is a bottom-mounted fuel supply device that is attached to the bottom of the fuel tank 12.
  • the bottom wall 12a of the fuel tank 12 is formed with an opening 12b composed of a circular opening hole.
  • the fuel pump module 10 includes a lid member 14, a fuel pump 16, a pump casing 18, a fuel filter 20, a pressure control valve 22, a sender gauge 24 (see FIG. 1), and the like.
  • the lid member 14 is made of resin and is formed in a disk shape.
  • the lid member 14 is attached to the bottom wall 12a of the fuel tank 12 so as to close the opening 12b.
  • a member disposed on the upper side of the lid member 14 is inserted into the fuel tank 12 through the opening 12b.
  • a fuel discharge pipe 26, a fuel passage forming portion 28, a first electrical connector 30, a second electrical connector 32, and the like are integrally formed on the lid member 14 (see FIG. 1).
  • the fuel discharge pipe 26 is formed in an L-shaped tube projecting to the lower surface side of the lid member 14.
  • a fuel supply pipe (not shown) connected to the injector of the internal combustion engine can be connected to the fuel discharge pipe 26.
  • the fuel passage forming portion 28 is formed in a vertical tubular shape protruding on the lid member 14.
  • a pipe line in the fuel passage forming portion 28 communicates with a pipe line in the fuel discharge pipe 26, and a series of fuel passages 34 are formed.
  • a pump connection port 35 that opens to the right and a cylindrical casing connection cylinder portion 36 that surrounds the periphery of the pump connection port 35 are formed on the right side of the upper portion of the fuel passage forming portion 28.
  • Each electrical connector 30 and 32 can be connected to an external connector (not shown) connected to a power source, a control device (ECU) and the like below the lid member 14.
  • the fuel pump 16 is an in-tank Wesco-type electric pump integrally incorporated in a cylindrical pump housing 38 in a state where an electric motor portion and an impeller pump portion are arranged in parallel in the axial direction. is there.
  • a fuel inlet 39 is formed in a protruding shape on the end surface (right end surface) of the pump housing 38 on the pump portion side.
  • a fuel discharge port 40 is formed in a protruding shape on the end surface (left end surface) of the pump housing 38 on the motor unit side.
  • the fuel pump 16 is arranged in a horizontal state with the fuel inlet 39 facing right and the fuel outlet 40 facing left.
  • the fuel discharge port 40 is connected to the pump connection port 35 of the fuel passage forming portion 28 of the lid member 14 by fitting.
  • a lead wire connected to the electrical wiring of the fuel pump 16 is connected to the first electrical connector 30.
  • the fuel pump 16 boosts the fuel sucked from the fuel suction port 39 in the pump unit by driving the motor unit, and then discharges it from the fuel discharge port 40.
  • the fuel inlet 39 corresponds to the “fuel inlet in the fuel tank” in the present specification.
  • the pump casing 18 is made of resin and is formed in a horizontally-oriented bottomed cylindrical shape.
  • the opening end portion (left end portion) of the pump casing 18 is coupled to the casing connecting cylinder portion 36 of the lid member 14 by a snap fit.
  • the fuel pump 16 is held horizontally.
  • a filter connecting pipe portion 42 is formed at the bottom (right end) of the pump casing 18.
  • a fuel inlet 39 of the fuel pump 16 is connected to the filter connecting pipe portion 42 by fitting.
  • the fuel filter 20 is communicated with the fuel inlet 39 of the fuel pump 16 through the filter connecting pipe portion 42 of the pump casing 18.
  • the fuel filter 20 filters the fuel in the fuel tank 12 sucked into the fuel pump 16 from the fuel suction port 39.
  • the fuel filter 20 will be described later.
  • the pressure control valve 22 is disposed in the upper end opening of the fuel passage forming portion 28 of the lid member 14 by fitting.
  • the pressure control valve 22 is prevented from coming off by a retaining member 45 attached to the fuel passage forming portion 28 by snap fitting.
  • the pressure control valve 22 adjusts the fuel pressure in the fuel passage 34 and discharges or discharges excess fuel from the excess fuel discharge port (not shown) to the outside of the passage, that is, into the fuel tank 12.
  • the sender gauge 24 has a float 49 connected to a gauge body 47 via an arm 48.
  • the gauge body 47 is attached to the front side surface of the pump casing 18.
  • the arm 48 is supported by the rotating member of the gauge body 47 in a cantilever manner.
  • the float 49 is disposed at the free end of the arm 48.
  • the lead wire connected to the electrical wiring of the sender gauge 24 is connected to the second electrical connector 32.
  • the gauge body 47 outputs the position of the float 49 that moves up and down according to the remaining fuel amount in the fuel tank 12 as a remaining fuel signal.
  • the outer peripheral portion of the filter member 52 has a concave hexagonal shape having a series of an upper side portion 52a, a right side portion 52b, a lower side right portion 52c, a left side lower portion 52d, a lower side left portion 52e, and a left side upper portion 52f. Is formed.
  • the left side lower part 52d is formed in an inclined shape that rises obliquely upward from the left end of the lower side right part 52c toward the right end of the lower side left part 52e.
  • the filter medium 58 will be described later.
  • a pair of upper and lower attachment pieces 70 are formed on both upper and lower side surfaces of the second pipe portion 69. As shown in FIG. 2, the two attachment pieces 70 are engaged with each other with respect to a pair of upper and lower elastic locking pieces 72 protruding from the right end portion of the pump casing 18 by using the elasticity thereof. Thereby, the attachment member 56 is connected to the pump casing 18 by a snap fit. Accordingly, the second pipe portion 69 of the attachment member 56 is connected to the filter connection pipe portion 42 of the pump casing 18 by fitting.
  • the filter medium 58 has a multilayer structure (four-layer structure) formed by laminating a plurality of (for example, four) resin sheet-like nonwoven fabrics 58a, 58b, 58c, and 58d.
  • a sheet-like spunbond nonwoven fabric 58 a manufactured by a spunbond method is disposed on the outermost layer of the filter medium 58.
  • the average pore diameter of the outermost spunbond nonwoven fabric 58a is, for example, 15 to 40 ⁇ m.
  • a sheet-like spunbond nonwoven fabric 58d manufactured by a spunbond method is disposed in the innermost layer of the filter medium 58.
  • the spunbonded nonwoven fabric 58a disposed in the outermost layer of the filter medium 58 of the filter member 52 is a nonwoven fabric with extremely few falling fibers, excellent wear resistance, and high strength. Therefore, the innermost melt-blown nonwoven fabric 58b can be protected by the outermost layer spunbond nonwoven fabric 58a. For this reason, the mesh arrange
  • the spunbond nonwoven fabric 58d disposed in the innermost layer of the filter medium 58 is a nonwoven fabric having extremely few falling fibers, excellent wear resistance, and high strength, like the outermost spunbond nonwoven fabric 58a. Therefore, the melt-blown nonwoven fabric 58c on the outer layer side can be protected by the innermost spunbond nonwoven fabric 58d.
  • both spunbond nonwoven fabrics 58a and 58b have less fuzz as compared to both meltblown nonwoven fabrics 58b and 58c. For this reason, clogging of the filter member 52 due to the fluff that has fallen off from the outermost spunbond nonwoven fabric 58a can be suppressed. Further, it is possible to prevent the fluff that has fallen off from the innermost spunbond nonwoven fabric 58d from flowing into the fuel inlet 39 side.
  • fine foreign matters can be captured by the melt blown nonwoven fabrics 58b and 58c disposed between the outermost layer and the innermost layer.
  • the second solidified portion 80 (see FIGS. 10 and 11) formed on the outermost spunbond nonwoven fabric 58a of the filter medium 58 is fuzzed or damaged in the peripheral region including the bent portion due to contact with other members. Such damage can be suppressed.
  • the second solidified portion 80 of the outermost spunbond nonwoven fabric 58a in the filter member 52 of the fuel filter 20 is used as the fuel. Even if it comes into contact with the rim of the opening 12b of the tank 12, the second solidifying portion 80 can suppress damage such as fuzz and scratches in the peripheral region including the bent portion.
  • Both solidified portions 78 and 80 are also effective in preventing fuzz of the outermost spunbond nonwoven fabric 58a due to friction between the filter members 52 of the product during transportation of the fuel filter 20. is there.
  • both the solidification parts 78 and 80 are the coating parts formed in the spunbond nonwoven fabric 58a of the outermost layer. Therefore, both solidified portions 78 and 80 can be easily formed by forming a coating portion on the outermost spunbond nonwoven fabric 58a.
  • At least one of the solidified portions 82 and 84 may be formed by a welded portion by welding such as dot welding or hot plate welding instead of the heat melting portion of the outermost spunbond nonwoven fabric 58a.
  • a welded portion as a solidified portion can be formed on the outermost spunbond nonwoven fabric 58a without requiring a separate member. Further, the welded portion can be applied in the previous step of folding the filter medium 58 in half. Moreover, the welding part should just be formed in the outermost layer spunbond nonwoven fabric 58a.
  • a sheet-like spunbond nonwoven fabric 90e manufactured by a spunbond method is disposed in the innermost layer of the filter medium 90.
  • the same spunbond nonwoven fabric is used for the outermost spunbond nonwoven fabric 90a and the innermost spunbond nonwoven fabric 90e.
  • one surface 92 of the outermost spunbond nonwoven fabric 90 a of the filter medium 90 forms the outer surface of the filter member 52.
  • the flat surface 92 of the innermost spunbond nonwoven fabric 90 e of the filter medium 90 is disposed so as to form the inner surface of the filter member 52.
  • the outer surface of the filter member 52 is the surface of the fuel tank 12 (see FIG. 1) that faces the space in the tank.
  • the inner surface of the filter member 52 is the surface facing the inner space 53.

Abstract

Provided is a fuel filter that can reduce costs. The fuel filter is provided with a filter member (52) that is formed in a bag shape using a filtration material (58). A fuel intake port in the inside of a fuel tank communicates with an interior space (53) of the filter member (52). The filtration material (58) has a multi-layer structure obtained by stacking a plurality of non-woven fabric sheets (58a, 58b, 58c, 58d). A spunbonded nonwoven fabric (58a) manufactured by a spunbond method is disposed on the outermost layer of the filtration material (58).

Description

燃料用フィルタFuel filter
　本発明は、主として自動車、二輪自動車等の車両の燃料タンク内にある燃料吸入口に装着され、燃料吸入口から吸入される燃料を濾過する燃料用フィルタに関するものである。 The present invention relates to a fuel filter that is attached to a fuel intake port in a fuel tank of a vehicle such as an automobile or a two-wheeled vehicle, and filters fuel drawn from the fuel intake port.
　従来の燃料用フィルタには、濾過材により袋状に形成されたフィルタ部材の内部空間に燃料タンク内の燃料吸入口が連通されるものがある（例えば、特開２０００－２４６０２６号公報参照）。特開２０００－２４６０２６号公報において、フィルタ本体は、押出メッシュの外層、スパン結合されたスパン結合濾過媒体の一対の層、及び、スパン結合濾過媒体の一対の層間に配設される溶融吹込成形された濾過媒体の内層から成っている。なお、特開２０００－２４６０２６号公報におけるフィルタ本体は本明細書でいう「濾過材」に相当し、スパン結合濾過媒体は同じく「スパンボンド不織布」に相当し、押出メッシュは同じく「メッシュ」に相当する。 Some conventional fuel filters have a fuel intake port in a fuel tank communicated with an internal space of a filter member formed in a bag shape by a filter medium (see, for example, Japanese Patent Laid-Open No. 2000-246026). In Japanese Patent Application Laid-Open No. 2000-246026, the filter body is formed by melt blow molding, which is disposed between an outer layer of an extruded mesh, a pair of span-coupled span-coupled filtration media, and a pair of span-coupled filtration media. It consists of an inner layer of filtration media. In addition, the filter main body in Japanese Patent Laid-Open No. 2000-246026 corresponds to “filter material” in the present specification, the span-bonded filtration medium also corresponds to “spunbond nonwoven fabric”, and the extruded mesh also corresponds to “mesh”. To do.
　特開２０００－２４６０２６号公報によると、濾過材の最外層には、内層側の不織布を保護するためのメッシュが配置されているため、コストアップを招くという問題があった。本発明が解決しようとする課題は、コストを低減することのできる燃料用フィルタを提供することにある。 According to Japanese Patent Application Laid-Open No. 2000-246026, there is a problem in that the outermost layer of the filter medium is provided with a mesh for protecting the nonwoven fabric on the inner layer side, resulting in an increase in cost. The problem to be solved by the present invention is to provide a fuel filter capable of reducing the cost.
　前記課題は、本発明の燃料用フィルタにより解決することができる。第１の発明は、シート状の濾過材により袋状に形成されたフィルタ部材を備えており、前記フィルタ部材の内部空間に燃料タンク内の燃料吸入口が連通される燃料用フィルタであって、前記濾過材は、複数枚の不織布からなる多層構造を有しており、前記濾過材の最外層には、スパンボンド不織布が配置されている、燃料用フィルタである。この構成によると、フィルタ部材の濾過材の最外層に配置されたスパンボンド不織布は、脱落繊維が極めて少なく、耐摩耗性に優れ、強度の高い不織布である。したがって、最外層のスパンボンド不織布によって、その内層側の不織布を保護することができる。このため、従来の濾過材の最外層に配置されたメッシュを省略し、コストを低減することができる。 The above problem can be solved by the fuel filter of the present invention. 1st invention is provided with the filter member formed in the bag shape with the sheet-like filter material, The fuel filter with which the fuel inlet in a fuel tank is connected with the internal space of the said filter member, The filter medium has a multilayer structure composed of a plurality of nonwoven fabrics, and is a fuel filter in which a spunbond nonwoven fabric is disposed in the outermost layer of the filter medium. According to this configuration, the spunbonded nonwoven fabric disposed in the outermost layer of the filter medium of the filter member is a nonwoven fabric with extremely few falling fibers, excellent wear resistance, and high strength. Therefore, the nonwoven fabric on the inner layer side can be protected by the outermost spunbond nonwoven fabric. For this reason, the mesh arrange | positioned at the outermost layer of the conventional filter medium can be abbreviate | omitted, and cost can be reduced.
　第２の発明は、第１の発明において、前記最外層のスパンボンド不織布は、平面状のフラット面からなる一方の面と、多数の凹部又は多数の凸部を有する凹凸面からなる他方の面とを備えており、前記一方の面は、前記フィルタ部材の外表面を形成するように配置されている、燃料用フィルタである。この構成によると、最外層のスパンボンド不織布の一方の面であるフラット面は、他方の面である凹凸面と比べて、他部材との接触による繊維切れが生じ難い。このため、最外層のスパンボンド不織布のフラット面をフィルタ部材の外表面を形成するように配置することによって、燃料タンク内への燃料用フィルタの挿入時における他部材（例えば、燃料タンクの開口部の口縁部）との接触によるフィルタ部材の外表面の毛羽立ちや傷付き等の損傷を抑制することができる。また、最外層のスパンボンド不織布の凹凸面は、そのスパンボンド不織布の内層側にある不織布に面する。このため、最外層のスパンボンド不織布の凹凸面の毛羽立ちを抑制することができる。 According to a second aspect, in the first aspect, the outermost spunbonded nonwoven fabric has one surface composed of a flat flat surface and the other surface composed of a concavo-convex surface having a large number of concave portions or a large number of convex portions. The one surface is a fuel filter disposed so as to form an outer surface of the filter member. According to this configuration, the flat surface, which is one surface of the outermost spunbond nonwoven fabric, is less likely to cause fiber breakage due to contact with other members as compared to the uneven surface, which is the other surface. For this reason, by arranging the flat surface of the outermost spunbond nonwoven fabric so as to form the outer surface of the filter member, another member (for example, the opening of the fuel tank) when the fuel filter is inserted into the fuel tank. Damage of the outer surface of the filter member due to contact with the mouth edge of the filter member can be suppressed. The uneven surface of the outermost spunbond nonwoven fabric faces the nonwoven fabric on the inner layer side of the spunbond nonwoven fabric. For this reason, the fluff of the uneven surface of the outermost spunbond nonwoven fabric can be suppressed.
　第３の発明は、第１又は２の発明において、前記濾過材の最外層のスパンボンド不織布の少なくとも一部の領域には、固化部が形成されている、燃料用フィルタである。この構成によると、濾過材の最外層のスパンボンド不織布に形成された固化部によって、他部材との接触による当該領域の毛羽立ちや傷付き等の損傷を抑制することができる。 A third invention is a fuel filter according to the first or second invention, wherein a solidified portion is formed in at least a part of the outermost spunbond nonwoven fabric of the filter medium. According to this configuration, the solidified portion formed in the outermost spunbond nonwoven fabric of the filter medium can suppress damage such as fuzz and scratches in the region due to contact with other members.
　第４の発明は、第３の発明において、前記フィルタ部材は、前記濾過材が二つ折りされ、折り曲げ部以外の周縁部が溶着部により相互に接合されており、前記固化部は、前記濾過材の折り曲げ部を含む周辺領域に形成されている、燃料用フィルタである。この構成によると、濾過材の折り曲げ部を含む周辺領域に形成された固化部によって、他部材との接触による当該領域の毛羽立ちや傷付き等の損傷を抑制することができる。 In a fourth aspect based on the third aspect, the filter member is formed by folding the filter medium in half, and peripheral portions other than the bent portion are joined to each other by a welded portion. The fuel filter is formed in the peripheral region including the bent portion. According to this configuration, the solidified portion formed in the peripheral region including the bent portion of the filter medium can suppress damage such as fuzz and scratches in the region due to contact with other members.
　第５の発明は、第３又は４の発明において、前記固化部は、前記最外層のスパンボンド不織布に形成された塗装部である、燃料用フィルタである。この構成によると、最外層のスパンボンド不織布に対する塗装部の形成によって、固化部を容易に形成することができる。 The fifth invention is a fuel filter according to the third or fourth invention, wherein the solidified portion is a coated portion formed on the outermost spunbond nonwoven fabric. According to this configuration, the solidified portion can be easily formed by forming the coating portion on the outermost spunbonded nonwoven fabric.
　第６の発明は、第５の発明において、前記塗装部は、燃料で溶解される燃料溶解性を有する、燃料用フィルタである。この構成によると、燃料用フィルタの使用によって、固化部が燃料により溶解されることで除去される。このため、最外層のスパンボンド不織布の固化部における濾過性能を再生させることができる。 The sixth aspect of the invention is the fuel filter according to the fifth aspect of the invention, wherein the coating portion has a fuel solubility that is dissolved by fuel. According to this configuration, the solidified portion is removed by being dissolved by the fuel by using the fuel filter. For this reason, the filtration performance in the solidified part of the outermost spunbonded nonwoven fabric can be regenerated.
　第７の発明は、第３又は４の発明において、前記固化部は、前記最外層のスパンボンド不織布の熱溶融部である、燃料用フィルタである。この構成によると、別部材を要することなく、最外層のスパンボンド不織布に、固化部としての熱溶融部を形成することができる。 The seventh invention is the fuel filter according to the third or fourth invention, wherein the solidified part is a heat melting part of the outermost spunbond nonwoven fabric. According to this structure, the heat melting part as a solidification part can be formed in the outermost spunbonded nonwoven fabric without requiring a separate member.
　第８の発明は、第３又は４の発明において、前記固化部は、前記最外層のスパンボンド不織布の溶着部である、燃料用フィルタである。この構成によると、別部材を要することなく、最外層のスパンボンド不織布に、固化部としての溶着部を形成することができる。 The eighth invention is the fuel filter according to the third or fourth invention, wherein the solidified portion is a welded portion of the outermost spunbond nonwoven fabric. According to this structure, the welding part as a solidified part can be formed in the outermost spunbonded nonwoven fabric without requiring a separate member.
　第９の発明は、第１～８のいずれかの発明において、前記濾過材の最内層には、スパンボンド不織布が配置されている、燃料用フィルタである。この構成によると、濾過材の最内層に配置されたスパンボンド不織布は、脱落繊維が極めて少なく、耐摩耗性に優れ、強度の高い不織布である。したがって、最内層のスパンボンド不織布によって、その外層側の不織布を保護することができる。 A ninth invention is a fuel filter according to any one of the first to eighth inventions, wherein a spunbond nonwoven fabric is disposed in the innermost layer of the filter medium. According to this configuration, the spunbonded nonwoven fabric disposed in the innermost layer of the filter medium is a nonwoven fabric with extremely few falling fibers, excellent wear resistance, and high strength. Therefore, the outermost layer side nonwoven fabric can be protected by the innermost spunbond nonwoven fabric.
　第１０の発明は、第９の発明において、前記最内層のスパンボンド不織布は、平面状のフラット面からなる一方の面と、多数の凹部又は多数の凸部を有する凹凸面からなる他方の面とを備えており、前記一方の面は、前記フィルタ部材の内表面を形成するように配置されている、燃料用フィルタである。この構成によると、最内層のスパンボンド不織布の一方の面であるフラット面は、他方の面である凹凸面と比べて、他部材との接触による繊維切れが生じ難い。このため、最内層のスパンボンド不織布のフラット面をフィルタ部材の内表面を形成するように配置することによって、他部材（例えば、フィルタ部材の内部空間に配置された内骨部材）との接触によるフィルタ部材の内表面の毛羽立ちや傷付き等の損傷を抑制することができる。また、最内層のスパンボンド不織布の凹凸面は、そのスパンボンド不織布の外層側にある不織布に面する。このため、最内層のスパンボンド不織布の凹凸面の毛羽立ちを抑制することができる。 In a ninth aspect based on the ninth aspect, the innermost spunbonded nonwoven fabric has one surface composed of a flat flat surface and the other surface composed of an uneven surface having a large number of concave portions or a large number of convex portions. The one surface is a fuel filter disposed so as to form an inner surface of the filter member. According to this configuration, the flat surface, which is one surface of the innermost spunbond nonwoven fabric, is less susceptible to fiber breakage due to contact with other members than the uneven surface, which is the other surface. For this reason, by arranging the flat surface of the innermost spunbond nonwoven fabric so as to form the inner surface of the filter member, contact with other members (for example, inner bone members arranged in the inner space of the filter member) Damage such as fuzz and scratches on the inner surface of the filter member can be suppressed. Further, the uneven surface of the innermost spunbond nonwoven fabric faces the nonwoven fabric on the outer layer side of the spunbond nonwoven fabric. For this reason, the fuzz of the uneven surface of the innermost spunbond nonwoven fabric can be suppressed.
実施形態１にかかる燃料ポンプモジュールを示す斜視図である。1 is a perspective view showing a fuel pump module according to Embodiment 1. FIG. 燃料ポンプモジュールを一部破断して示す正面図である。It is a front view which shows a fuel pump module partially broken. 燃料用フィルタを示す斜視図である。It is a perspective view which shows the filter for fuels. 燃料用フィルタを示す正面図である。It is a front view which shows the filter for fuels. 燃料用フィルタを示す下面図である。It is a bottom view which shows the filter for fuels. 図４のVI－VI線矢視断面図である。FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 4. 実施形態２にかかる燃料用フィルタを示す斜視図である。It is a perspective view which shows the filter for fuel concerning Embodiment 2. FIG. 燃料用フィルタを示す正面図である。It is a front view which shows the filter for fuels. 燃料用フィルタを示す下面図である。It is a bottom view which shows the filter for fuels. 実施形態３にかかる燃料用フィルタを示す正面図である。FIG. 6 is a front view showing a fuel filter according to a third embodiment. 燃料用フィルタを示す下面図である。It is a bottom view which shows the filter for fuels. 燃料用フィルタを示す背面図である。It is a rear view which shows the filter for fuels. 図１０のXIII－XIII線矢視断面図である。FIG. 11 is a cross-sectional view taken along line XIII-XIII in FIG. 10. 燃料タンクに燃料ポンプモジュールを挿入する途中の状態を示す斜視図である。It is a perspective view which shows the state in the middle of inserting a fuel pump module in a fuel tank. 燃料タンクに燃料ポンプモジュールを挿入する途中の状態を示す斜視図であるIt is a perspective view which shows the state in the middle of inserting a fuel pump module in a fuel tank 実施形態４にかかる燃料用フィルタを示す正面図である。It is a front view which shows the filter for fuel concerning Embodiment 4. 燃料用フィルタを示す下面図である。It is a bottom view which shows the filter for fuels. 燃料用フィルタを示す背面図である。It is a rear view which shows the filter for fuels. 実施形態５にかかる燃料用フィルタの一部を示す断面図である。FIG. 9 is a cross-sectional view illustrating a part of a fuel filter according to a fifth embodiment. 実施形態６にかかる燃料用フィルタの一部を示す断面図である。It is sectional drawing which shows a part of fuel filter concerning Embodiment 6. 図２０のXXI部を示す拡大図である。It is an enlarged view which shows the XXI part of FIG. スパンボンド不織布の凹凸面を示す図である。It is a figure which shows the uneven | corrugated surface of a spun bond nonwoven fabric. スパンボンド不織布の凹凸面の変更例１を示す図である。It is a figure which shows the example 1 of a change of the uneven surface of a spunbond nonwoven fabric. スパンボンド不織布の凹凸面の変更例２を示す図である。It is a figure which shows the example 2 of a change of the uneven surface of a spunbond nonwoven fabric. スパンボンド不織布の凹凸面の変更例３を示す図である。It is a figure which shows the example 3 of a change of the uneven surface of a spunbond nonwoven fabric. スパンボンド不織布の凹凸面の変更例４を示す図である。It is a figure which shows the example 4 of a change of the uneven surface of a spun bond nonwoven fabric.
　以下、本発明を実施するための形態について図面を用いて説明する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
［実施形態１］実施形態１の燃料用フィルタは、例えば自動車、二輪自動車等の車両の燃料タンク内の燃料を内燃機関（エンジン）へ供給する燃料ポンプモジュールに備えられている。このため、燃料ポンプモジュールを説明した後、燃料用フィルタを説明する。図１は燃料供給装置を示す斜視図、図２は同じく一部破断して示す正面図である。なお、燃料ポンプモジュールについては、図２の正面図における上下左右を基準として説明を行う。 [Embodiment 1] The fuel filter of Embodiment 1 is provided in a fuel pump module that supplies fuel in a fuel tank of a vehicle such as an automobile or a two-wheeled automobile to an internal combustion engine (engine). Therefore, after describing the fuel pump module, the fuel filter will be described. FIG. 1 is a perspective view showing a fuel supply device, and FIG. The fuel pump module will be described with reference to the top, bottom, left and right in the front view of FIG.
　図１に示すように、燃料ポンプモジュール１０は、燃料タンク１２の底部に装着される底付けタイプの燃料供給装置である。燃料タンク１２の底壁１２ａには、円形の開口孔からなる開口部１２ｂが形成されている。図２に示すように、燃料ポンプモジュール１０は、蓋部材１４、燃料ポンプ１６、ポンプケーシング１８、燃料用フィルタ２０、圧力制御弁２２、センダゲージ２４（図１参照）等がモジュール化されている。 As shown in FIG. 1, the fuel pump module 10 is a bottom-mounted fuel supply device that is attached to the bottom of the fuel tank 12. The bottom wall 12a of the fuel tank 12 is formed with an opening 12b composed of a circular opening hole. As shown in FIG. 2, the fuel pump module 10 includes a lid member 14, a fuel pump 16, a pump casing 18, a fuel filter 20, a pressure control valve 22, a sender gauge 24 (see FIG. 1), and the like.
　蓋部材１４は、樹脂製で、円板状に形成されている。蓋部材１４は、燃料タンク１２の底壁１２ａに対して開口部１２ｂを塞ぐように装着されている。蓋部材１４の上側に配置される部材は、開口部１２ｂから燃料タンク１２内へ挿入されている。蓋部材１４には、燃料吐出管２６、燃料通路形成部２８、第１の電気コネクタ３０、第２の電気コネクタ３２等が一体形成されている（図１参照）。 The lid member 14 is made of resin and is formed in a disk shape. The lid member 14 is attached to the bottom wall 12a of the fuel tank 12 so as to close the opening 12b. A member disposed on the upper side of the lid member 14 is inserted into the fuel tank 12 through the opening 12b. A fuel discharge pipe 26, a fuel passage forming portion 28, a first electrical connector 30, a second electrical connector 32, and the like are integrally formed on the lid member 14 (see FIG. 1).
　燃料吐出管２６は、蓋部材１４の下面側に突出するＬ字管状に形成されている。燃料吐出管２６には、内燃機関のインジェクタにつながる燃料供給配管（不図示）が接続可能となっている。燃料通路形成部２８は、蓋部材１４上に突出する縦管状に形成されている。燃料通路形成部２８内の管路は、燃料吐出管２６内の管路と連通されており、一連の燃料通路３４が形成されている。燃料通路形成部２８の上部の右側部には、右方に開口するポンプ接続口３５、及び、ポンプ接続口３５の周囲を取り囲む円筒状のケーシング接続筒部３６が形成されている。また、各電気コネクタ３０，３２には、蓋部材１４の下側において、電源、制御装置（ＥＣＵ）等につながる外部コネクタ（不図示）がそれぞれ接続可能となっている。 The fuel discharge pipe 26 is formed in an L-shaped tube projecting to the lower surface side of the lid member 14. A fuel supply pipe (not shown) connected to the injector of the internal combustion engine can be connected to the fuel discharge pipe 26. The fuel passage forming portion 28 is formed in a vertical tubular shape protruding on the lid member 14. A pipe line in the fuel passage forming portion 28 communicates with a pipe line in the fuel discharge pipe 26, and a series of fuel passages 34 are formed. A pump connection port 35 that opens to the right and a cylindrical casing connection cylinder portion 36 that surrounds the periphery of the pump connection port 35 are formed on the right side of the upper portion of the fuel passage forming portion 28. Each electrical connector 30 and 32 can be connected to an external connector (not shown) connected to a power source, a control device (ECU) and the like below the lid member 14.
　燃料ポンプ１６は、円筒状のポンプハウジング３８内に、電動式のモータ部とインペラ式のポンプ部とが軸方向に並設する状態で一体的に組込まれたインタンク式のウエスコ型電動ポンプである。ポンプハウジング３８のポンプ部側の端面（右端面）には、燃料吸入口３９が突出状に形成されている。ポンプハウジング３８のモータ部側の端面（左端面）には、燃料吐出口４０が突出状に形成されている。燃料ポンプ１６は、燃料吸入口３９を右方に向ける一方、燃料吐出口４０を左方に向けた横置き状態で配置されている。燃料吐出口４０は、蓋部材１４の燃料通路形成部２８のポンプ接続口３５に嵌合により接続されている。燃料ポンプ１６の電気配線とつながるリード線は、第１の電気コネクタ３０に接続されている。燃料ポンプ１６は、モータ部の駆動によってポンプ部において燃料吸入口３９から吸入した燃料を昇圧した後、燃料吐出口４０から吐出する。なお、燃料吸入口３９は本明細書でいう「燃料タンク内の燃料吸入口」に相当する。 The fuel pump 16 is an in-tank Wesco-type electric pump integrally incorporated in a cylindrical pump housing 38 in a state where an electric motor portion and an impeller pump portion are arranged in parallel in the axial direction. is there. A fuel inlet 39 is formed in a protruding shape on the end surface (right end surface) of the pump housing 38 on the pump portion side. A fuel discharge port 40 is formed in a protruding shape on the end surface (left end surface) of the pump housing 38 on the motor unit side. The fuel pump 16 is arranged in a horizontal state with the fuel inlet 39 facing right and the fuel outlet 40 facing left. The fuel discharge port 40 is connected to the pump connection port 35 of the fuel passage forming portion 28 of the lid member 14 by fitting. A lead wire connected to the electrical wiring of the fuel pump 16 is connected to the first electrical connector 30. The fuel pump 16 boosts the fuel sucked from the fuel suction port 39 in the pump unit by driving the motor unit, and then discharges it from the fuel discharge port 40. The fuel inlet 39 corresponds to the “fuel inlet in the fuel tank” in the present specification.
　ポンプケーシング１８は、樹脂製で、横向きの有底円筒状に形成されている。ポンプケーシング１８の開口端部（左端部）は、蓋部材１４のケーシング接続筒部３６にスナップフィットにより連結されている。ポンプケーシング１８内には、燃料ポンプ１６が横置き状態で保持されている。ポンプケーシング１８の底部（右端部）には、フィルタ接続管部４２が形成されている。フィルタ接続管部４２には、燃料ポンプ１６の燃料吸入口３９が嵌合により接続されている。 The pump casing 18 is made of resin and is formed in a horizontally-oriented bottomed cylindrical shape. The opening end portion (left end portion) of the pump casing 18 is coupled to the casing connecting cylinder portion 36 of the lid member 14 by a snap fit. In the pump casing 18, the fuel pump 16 is held horizontally. A filter connecting pipe portion 42 is formed at the bottom (right end) of the pump casing 18. A fuel inlet 39 of the fuel pump 16 is connected to the filter connecting pipe portion 42 by fitting.
　燃料用フィルタ２０は、ポンプケーシング１８のフィルタ接続管部４２を介して燃料ポンプ１６の燃料吸入口３９に連通されている。燃料用フィルタ２０は、燃料吸入口３９から燃料ポンプ１６内に吸入される燃料タンク１２内の燃料を濾過する。なお、燃料用フィルタ２０については後で説明する。 The fuel filter 20 is communicated with the fuel inlet 39 of the fuel pump 16 through the filter connecting pipe portion 42 of the pump casing 18. The fuel filter 20 filters the fuel in the fuel tank 12 sucked into the fuel pump 16 from the fuel suction port 39. The fuel filter 20 will be described later.
　圧力制御弁２２は、蓋部材１４の燃料通路形成部２８の上端開口部内に嵌合により配置されている。圧力制御弁２２は、燃料通路形成部２８にスナップフィットにより装着された抜け止め部材４５によって抜け止めされている。圧力制御弁２２は、燃料通路３４の燃料の圧力を調整しかつ余剰燃料を余剰燃料吐出口（不図示）から通路外すなわち燃料タンク１２内へ吐出すなわち排出する。 The pressure control valve 22 is disposed in the upper end opening of the fuel passage forming portion 28 of the lid member 14 by fitting. The pressure control valve 22 is prevented from coming off by a retaining member 45 attached to the fuel passage forming portion 28 by snap fitting. The pressure control valve 22 adjusts the fuel pressure in the fuel passage 34 and discharges or discharges excess fuel from the excess fuel discharge port (not shown) to the outside of the passage, that is, into the fuel tank 12.
　図１に示すように、センダゲージ２４は、ゲージ本体４７にアーム４８を介してフロート４９が接続されてなる。ゲージ本体４７は、ポンプケーシング１８の前側面に装着されている。アーム４８は、ゲージ本体４７の回動部材に片持ち状に支持されている。フロート４９は、アーム４８の自由端部に配置されている。また、センダゲージ２４の電気配線とつながるリード線は、第２の電気コネクタ３２に接続されている。ゲージ本体４７は、燃料タンク１２内の燃料残量に応じて上下するフロート４９の位置を燃料残量信号として出力する。 As shown in FIG. 1, the sender gauge 24 has a float 49 connected to a gauge body 47 via an arm 48. The gauge body 47 is attached to the front side surface of the pump casing 18. The arm 48 is supported by the rotating member of the gauge body 47 in a cantilever manner. The float 49 is disposed at the free end of the arm 48. The lead wire connected to the electrical wiring of the sender gauge 24 is connected to the second electrical connector 32. The gauge body 47 outputs the position of the float 49 that moves up and down according to the remaining fuel amount in the fuel tank 12 as a remaining fuel signal.
　続いて、燃料ポンプモジュール１０の作動について説明する。外部電源により燃料ポンプ１６が駆動される。すると、燃料タンク１２内の燃料が、燃料用フィルタ２０により濾過された後、ポンプケーシング１８のフィルタ接続管部４２を介して、燃料ポンプ１６の燃料吸入口３９からポンプ部に吸入されかつ昇圧された後、燃料吐出口４０から蓋部材１４の燃料通路３４内へ吐出される。燃料通路３４内に吐出された燃料は、燃料供給配管を介して内燃機関に供給される。燃料通路３４の燃料の圧力は圧力制御弁２２により所定の圧力に調整される。 Subsequently, the operation of the fuel pump module 10 will be described. The fuel pump 16 is driven by an external power source. Then, after the fuel in the fuel tank 12 is filtered by the fuel filter 20, the fuel is sucked into the pump portion from the fuel inlet 39 of the fuel pump 16 through the filter connection pipe portion 42 of the pump casing 18 and the pressure is increased. After that, the fuel is discharged from the fuel discharge port 40 into the fuel passage 34 of the lid member 14. The fuel discharged into the fuel passage 34 is supplied to the internal combustion engine via the fuel supply pipe. The pressure of the fuel in the fuel passage 34 is adjusted to a predetermined pressure by the pressure control valve 22.
　次に、燃料用フィルタ２０を説明する。図３は燃料用フィルタを示す斜視図、図４は正面図、図５は同じく下面図である。図５に示すように、燃料用フィルタ２０は、フィルタ部材５２と内骨部材５４と取付部材５６とを備えている。フィルタ部材５２は、燃料を通過させる一方、燃料中の異物を除去する機能を有するシート状の濾過材５８により扁平な袋状に形成されている。フィルタ部材５２は、扁平方向（厚さ方向）を前後方向（図５において上下方向）に向けた状態で配置されている。フィルタ部材５２は、前側の平面部６０及び後側の平面部６１とを有している。フィルタ部材５２は、正面視で左下部が切欠かれた逆Ｌ字状に形成されている（図４参照）。 Next, the fuel filter 20 will be described. 3 is a perspective view showing the fuel filter, FIG. 4 is a front view, and FIG. 5 is a bottom view. As shown in FIG. 5, the fuel filter 20 includes a filter member 52, an inner bone member 54, and an attachment member 56. The filter member 52 is formed in a flat bag shape by a sheet-like filter material 58 having a function of removing the foreign matters in the fuel while allowing the fuel to pass therethrough. The filter member 52 is disposed in a state where the flat direction (thickness direction) is directed in the front-rear direction (vertical direction in FIG. 5). The filter member 52 has a front plane portion 60 and a rear plane portion 61. The filter member 52 is formed in an inverted L shape in which the lower left portion is cut out in front view (see FIG. 4).
　図４に示すように、フィルタ部材５２の外周部は、上辺部５２ａと右辺部５２ｂと下辺右部５２ｃと左辺下部５２ｄと下辺左部５２ｅと左辺上部５２ｆとを一連状に有する凹六角形状に形成されている。左辺下部５２ｄは、下辺右部５２ｃの左端部から下辺左部５２ｅの右端部に向かって斜め左上がりの傾斜状に形成されている。なお、濾過材５８については後で説明する。 As shown in FIG. 4, the outer peripheral portion of the filter member 52 has a concave hexagonal shape having a series of an upper side portion 52a, a right side portion 52b, a lower side right portion 52c, a left side lower portion 52d, a lower side left portion 52e, and a left side upper portion 52f. Is formed. The left side lower part 52d is formed in an inclined shape that rises obliquely upward from the left end of the lower side right part 52c toward the right end of the lower side left part 52e. The filter medium 58 will be described later.
　図５に示すように、内骨部材５４は、樹脂製で、格子板状の骨本体６３と、骨本体６３から一方（後方）へ向けて分散状に突出された複数の脚部６４とを有する。内骨部材５４は、フィルタ部材５２の内部空間５３（図６参照）に配置されている。内骨部材５４により、フィルタ部材５２の前側の平面部６０と後側の平面部６１との間隔が所定の間隔に保持されている。図６は図４のVI－VI線矢視断面図である。 As shown in FIG. 5, the inner bone member 54 is made of resin and includes a lattice plate-like bone main body 63 and a plurality of legs 64 protruding in a distributed manner from the bone main body 63 toward one side (backward). Have. The inner bone member 54 is disposed in the internal space 53 (see FIG. 6) of the filter member 52. By the inner bone member 54, the interval between the front plane portion 60 and the rear plane portion 61 of the filter member 52 is maintained at a predetermined interval. 6 is a cross-sectional view taken along line VI-VI in FIG.
　図３に示すように、取付部材５６は、樹脂製で、第１の管部６８と第２の管部６９とを有するＬ字管状に形成されている。第１の管部６８の開口端部は、フィルタ部材５２の前側の平面部６０の中央部において内骨部材５４の骨本体６３（図５参照）に対して溶着等によって結合されている。第２の管部６９の開口端部は、左方に指向されている。取付部材５６と内骨部材５４との間には、前側の平面部６０の中央部に形成された取付孔（不図示）の口縁部が挟持されている。これにより、取付部材５６の管路がフィルタ部材５２の内部空間５３（図６参照）に連通されている。 As shown in FIG. 3, the attachment member 56 is made of resin and is formed in an L-shaped tube having a first tube portion 68 and a second tube portion 69. The opening end portion of the first pipe portion 68 is joined to the bone main body 63 (see FIG. 5) of the inner bone member 54 by welding or the like at the central portion of the flat surface portion 60 on the front side of the filter member 52. The opening end of the second pipe portion 69 is directed leftward. Between the attachment member 56 and the inner bone member 54, a lip portion of an attachment hole (not shown) formed in the central portion of the front plane portion 60 is sandwiched. Thereby, the pipe line of the attachment member 56 is communicated with the internal space 53 (see FIG. 6) of the filter member 52.
　第２の管部６９の上下両側面には、上下一対をなす取付片７０が形成されている。図２に示すように、両取付片７０は、ポンプケーシング１８の右端部に突出された上下一対をなす弾性係止片７２に対してその弾性を利用して係合されている。これによって、取付部材５６がポンプケーシング１８にスナップフィットにより連結されている。これにともない、取付部材５６の第２の管部６９がポンプケーシング１８のフィルタ接続管部４２に嵌合により接続されている。 A pair of upper and lower attachment pieces 70 are formed on both upper and lower side surfaces of the second pipe portion 69. As shown in FIG. 2, the two attachment pieces 70 are engaged with each other with respect to a pair of upper and lower elastic locking pieces 72 protruding from the right end portion of the pump casing 18 by using the elasticity thereof. Thereby, the attachment member 56 is connected to the pump casing 18 by a snap fit. Accordingly, the second pipe portion 69 of the attachment member 56 is connected to the filter connection pipe portion 42 of the pump casing 18 by fitting.
　フィルタ部材５２を説明する。図３～図５に示すように、フィルタ部材５２は、１枚の濾過材５８が下辺右部５２ｃにおいて二つ折りされ、その折り曲げ部（下辺右部５２ｃ）以外の残りの周辺部が溶着によりシール状態に接合されることにより、袋状に形成されている。溶着による接合部により、溶着シール部７４が形成されている（図６参照）。なお、溶着シール部７４は本明細書でいう「溶着部」に相当する。また、溶着シール部７４の溶着には、例えば、ドット溶着、熱板溶着、超音波溶着、高周波溶着等を用いることができる。 The filter member 52 will be described. As shown in FIGS. 3 to 5, in the filter member 52, one filter medium 58 is folded in two at the lower side right part 52c, and the remaining peripheral part other than the bent part (lower side right part 52c) is sealed by welding. By being joined to the state, it is formed in a bag shape. A welding seal portion 74 is formed by the welded joint portion (see FIG. 6). The weld seal portion 74 corresponds to a “weld portion” in the present specification. Further, for welding of the welding seal portion 74, for example, dot welding, hot plate welding, ultrasonic welding, high frequency welding, or the like can be used.
　図６に示すように、濾過材５８は、複数枚（例えば４枚）の樹脂製のシート状の不織布５８ａ，５８ｂ，５８ｃ，５８ｄを積層してなる多層構造（４層構造）を有している。濾過材５８の最外層には、スパンボンド法により製造されたシート状のスパンボンド不織布５８ａが配置されている。最外層のスパンボンド不織布５８ａの平均孔径は、例えば、１５～４０μｍである。また、濾過材５８の最内層には、スパンボンド法により製造されたシート状のスパンボンド不織布５８ｄが配置されている。最外層のスパンボンド不織布５８ａと最内層のスパンボンド不織布５８ｄには、例えば、同じスパンボンド不織布が用いられている。また、最外層と最内層との間の２つの中間層には、メルトブロウン法により製造されたシート状の２枚のメルトブロウン不織布５８ｂ，５８ｃが配置されている。両メルトブロウン不織布５８ｂ，５８ｃには、例えば、同じメルトブロウン不織布が用いられている。両スパンボンド不織布５８ａ，５８ｄは、両メルトブロウン不織布５８ｂ，５８ｃと比べて、脱落繊維が極めて少なく、耐摩耗性に優れ、強度の高い不織布である。また、両メルトブロウン不織布５８ｂ，５８ｃは、両スパンボンド不織布５８ａ，５８ｄよりもその目（平均孔径）を細かく形成することができる不織布である。 As shown in FIG. 6, the filter medium 58 has a multilayer structure (four-layer structure) formed by laminating a plurality of (for example, four) resin sheet-like nonwoven fabrics 58a, 58b, 58c, and 58d. Yes. A sheet-like spunbond nonwoven fabric 58 a manufactured by a spunbond method is disposed on the outermost layer of the filter medium 58. The average pore diameter of the outermost spunbond nonwoven fabric 58a is, for example, 15 to 40 μm. Further, a sheet-like spunbond nonwoven fabric 58d manufactured by a spunbond method is disposed in the innermost layer of the filter medium 58. For example, the same spunbond nonwoven fabric is used for the outermost layer spunbond nonwoven fabric 58a and the innermost layer spunbond nonwoven fabric 58d. Further, two sheet-shaped meltblown nonwoven fabrics 58b and 58c manufactured by the meltblown method are disposed in the two intermediate layers between the outermost layer and the innermost layer. For example, the same meltblown nonwoven fabric is used for both meltblown nonwoven fabrics 58b and 58c. Both spunbonded nonwoven fabrics 58a and 58d are nonwoven fabrics that have very few falling fibers, excellent wear resistance, and high strength compared to both meltblown nonwoven fabrics 58b and 58c. Moreover, both melt-blown nonwoven fabrics 58b and 58c are nonwoven fabrics whose eyes (average pore diameter) can be formed more finely than both spunbond nonwoven fabrics 58a and 58d.
　上記した燃料用フィルタ２０によると、フィルタ部材５２の濾過材５８の最外層に配置されたスパンボンド不織布５８ａは、脱落繊維が極めて少なく、耐摩耗性に優れ、強度の高い不織布である。したがって、最外層のスパンボンド不織布５８ａによって、その内層側のメルトブロウン不織布５８ｂを保護することができる。このため、従来の濾過材の最外層に配置されたメッシュを省略し、コストを低減することができる。 According to the fuel filter 20 described above, the spunbonded nonwoven fabric 58a disposed in the outermost layer of the filter medium 58 of the filter member 52 is a nonwoven fabric with extremely few falling fibers, excellent wear resistance, and high strength. Therefore, the innermost melt-blown nonwoven fabric 58b can be protected by the outermost layer spunbond nonwoven fabric 58a. For this reason, the mesh arrange | positioned at the outermost layer of the conventional filter medium can be abbreviate | omitted, and cost can be reduced.
　また、濾過材５８の最内層に配置されたスパンボンド不織布５８ｄは、最外層のスパンボンド不織布５８ａと同様、脱落繊維が極めて少なく、耐摩耗性に優れ、強度の高い不織布である。したがって、最内層のスパンボンド不織布５８ｄによって、その外層側のメルトブロウン不織布５８ｃを保護することができる。 Further, the spunbond nonwoven fabric 58d disposed in the innermost layer of the filter medium 58 is a nonwoven fabric having extremely few falling fibers, excellent wear resistance, and high strength, like the outermost spunbond nonwoven fabric 58a. Therefore, the melt-blown nonwoven fabric 58c on the outer layer side can be protected by the innermost spunbond nonwoven fabric 58d.
　また、両スパンボンド不織布５８ａ，５８ｂは、両メルトブロウン不織布５８ｂ，５８ｃと比べて、毛羽立ちが少ない。このため、最外層のスパンボンド不織布５８ａから脱落した毛羽によるフィルタ部材５２の目詰まりを抑制することができる。また、最内層のスパンボンド不織布５８ｄから脱落した毛羽が燃料吸入口３９側へ流れ込むことを抑制することができる。 Also, both spunbond nonwoven fabrics 58a and 58b have less fuzz as compared to both meltblown nonwoven fabrics 58b and 58c. For this reason, clogging of the filter member 52 due to the fluff that has fallen off from the outermost spunbond nonwoven fabric 58a can be suppressed. Further, it is possible to prevent the fluff that has fallen off from the innermost spunbond nonwoven fabric 58d from flowing into the fuel inlet 39 side.
　また、最外層と最内層との間に配置された両メルトブロウン不織布５８ｂ，５８ｃによって細かな異物を捕捉することができる。 Further, fine foreign matters can be captured by the melt blown nonwoven fabrics 58b and 58c disposed between the outermost layer and the innermost layer.
　また、最外層のスパンボンド不織布５８ａの平均孔径を１５～４０μｍとしたことにより、両メルトブロウン不織布５８ｂ，５８ｃに大きな負担をかけることなく、燃料中の異物を効率よく捕捉することができる。 Further, by setting the average pore diameter of the outermost spunbond nonwoven fabric 58a to 15 to 40 μm, foreign matters in the fuel can be efficiently captured without imposing a heavy burden on both meltblown nonwoven fabrics 58b and 58c.
［実施形態２］実施形態２は、実施形態１に変更を加えたものであるから、その変更部分について説明し、重複する説明は省略する。図７は燃料用フィルタを示す斜視図、図８は同じく正面図、図９は同じく下面図である。図７～図９に示すように、燃料用フィルタ２０のフィルタ部材（符号、７６を付す）は、１枚の濾過材５８が左辺上部５２ｆにおいて二つ折りされ、その折り曲げ部（左辺上部５２ｆ）以外の残りの周辺部が溶着によりシール状態に接合されることにより、袋状に形成されている。なお、溶着による接合部により、溶着シール部７４（実施形態１と同一符号を付す）が形成されている。 [Embodiment 2] Since Embodiment 2 is a modification of Embodiment 1, only the changed portion will be described, and redundant description will be omitted. FIG. 7 is a perspective view showing the fuel filter, FIG. 8 is a front view, and FIG. 9 is a bottom view. As shown in FIGS. 7 to 9, in the filter member (reference numeral 76) of the fuel filter 20, one filter medium 58 is folded in two at the upper left side 52f, except for the bent part (upper left side 52f). The remaining peripheral portions of the slab are joined in a sealed state by welding to form a bag shape. In addition, the welding seal part 74 (it attaches | subjects the same code | symbol as Embodiment 1) is formed of the junction part by welding.
［実施形態３］実施形態３について説明する。本実施形態は、実施形態１に変更を加えたものであるから、その変更部分について説明し、重複する説明は省略する。図１０は燃料用フィルタを示す正面図、図１１は同じく下面図、図１２は同じく背面図、図１３は図１０のXIII－XIII線矢視断面図である。図１１及び図１２に示すように、本実施形態では、実施形態１における燃料用フィルタ２０のフィルタ部材５２において、濾過材５８の最外層のスパンボンド不織布５８ａ（図１３参照）の少なくとも一部の領域、例えば後側の平面部６１の左端部（図１２において右端部）の領域に、固化処理を施すことにより第１の固化部７８（図１１及び図１２において網目模様を付した部分参照）が形成されている。また、図１０及び図１１に示すように、濾過材５８の折り曲げ部すなわち下辺右部５２ｃ及びその周辺部を含む周辺領域には、固化処理を施すことにより第２の固化部８０（図１０～図１２において網目模様を付した部分参照）が形成されている。 [Embodiment 3] Embodiment 3 will be described. Since the present embodiment is a modification of the first embodiment, the changed portion will be described and redundant description will be omitted. 10 is a front view showing the fuel filter, FIG. 11 is a bottom view, FIG. 12 is a rear view, and FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG. As shown in FIGS. 11 and 12, in the present embodiment, in the filter member 52 of the fuel filter 20 in the first embodiment, at least a part of the spunbond nonwoven fabric 58a (see FIG. 13) as the outermost layer of the filter medium 58. The first solidified portion 78 (see the portion with a mesh pattern in FIGS. 11 and 12) by applying a solidification process to the region, for example, the region of the left end portion (the right end portion in FIG. 12) of the rear plane portion 61. Is formed. Further, as shown in FIGS. 10 and 11, the second solidified portion 80 (FIG. 10 to FIG. 10) is applied to the bent portion of the filter medium 58, that is, the lower side right portion 52c and the peripheral region including the peripheral portion by applying a solidification process. In FIG. 12, a portion with a mesh pattern is formed).
　両固化部７８，８０にかかる固化処理は、濾過材５８の最外層のスパンボンド不織布５８ａ（図１３参照）に対する塗装である。すなわち、両固化部７８，８０は、濾過材５８の最外層のスパンボンド不織布５８ａに形成された塗装部である。塗装は、濾過材５８を二つ折りする前工程で施してもよいし、フィルタ部材の製造後の後工程で施してもよい。また、塗装部は、燃料で溶解される燃料溶解性を有している。燃料溶解性を有する塗装部の材料としては、例えば、溶剤系接着剤の商品名「エスダイン２８０ＰＫ（積水フーラー製）」を用いることができる。 The solidification treatment applied to both solidified portions 78 and 80 is a coating on the outermost spunbond nonwoven fabric 58a (see FIG. 13) of the filter medium 58. That is, both the solidified portions 78 and 80 are painted portions formed on the outermost spunbond nonwoven fabric 58a of the filter medium 58. The coating may be performed in a pre-process for folding the filter medium 58 in half, or may be performed in a post-process after manufacturing the filter member. Moreover, the coating part has the fuel solubility melt | dissolved with a fuel. As a material for the coating portion having fuel solubility, for example, a trade name “Sdyne 280PK (manufactured by Sekisui Fuller)” of a solvent-based adhesive can be used.
　本実施形態によると、濾過材５８の最外層のスパンボンド不織布５８ａに形成された第１の固化部７８（図１１～図１３参照）によって、他部材との接触による当該領域の毛羽立ちや傷付き等の損傷を抑制することができる。例えば、図１４に示すように、上下反転した燃料タンク１２に燃料ポンプモジュール１０を挿入する際、燃料用フィルタ２０のフィルタ部材５２における最外層のスパンボンド不織布５８ａの第１の固化部７８が燃料タンク１２の開口部１２ｂの口縁部に接触したとしても、第１の固化部７８によって当該領域の毛羽立ちや傷付き等の損傷を抑制することができる。なお、燃料タンク１２の開口部１２ｂの口縁部は本明細書でいう「他部材」に相当する。 According to the present embodiment, the first solidified portion 78 (see FIGS. 11 to 13) formed on the outermost spunbond nonwoven fabric 58a of the filter medium 58 causes fuzz and scratches in the region due to contact with other members. Such damage can be suppressed. For example, as shown in FIG. 14, when the fuel pump module 10 is inserted into the vertically inverted fuel tank 12, the first solidified portion 78 of the outermost spunbond nonwoven fabric 58a in the filter member 52 of the fuel filter 20 is used as the fuel. Even if it comes into contact with the rim of the opening 12b of the tank 12, the first solidified portion 78 can suppress damage such as fuzz and scratches in the region. The opening edge of the opening 12b of the fuel tank 12 corresponds to “another member” in this specification.
　また、濾過材５８の最外層のスパンボンド不織布５８ａに形成された第２の固化部８０（図１０及び図１１参照）によって、他部材との接触による折り曲げ部を含む周辺領域の毛羽立ちや傷付き等の損傷を抑制することができる。例えば、図１５に示すように、上下反転した燃料タンク１２に燃料ポンプモジュール１０を挿入する際、燃料用フィルタ２０のフィルタ部材５２における最外層のスパンボンド不織布５８ａの第２の固化部８０が燃料タンク１２の開口部１２ｂの口縁部に接触したとしても、第２の固化部８０によって折り曲げ部を含む周辺領域の毛羽立ちや傷付き等の損傷を抑制することができる。 Further, the second solidified portion 80 (see FIGS. 10 and 11) formed on the outermost spunbond nonwoven fabric 58a of the filter medium 58 is fuzzed or damaged in the peripheral region including the bent portion due to contact with other members. Such damage can be suppressed. For example, as shown in FIG. 15, when the fuel pump module 10 is inserted into the vertically inverted fuel tank 12, the second solidified portion 80 of the outermost spunbond nonwoven fabric 58a in the filter member 52 of the fuel filter 20 is used as the fuel. Even if it comes into contact with the rim of the opening 12b of the tank 12, the second solidifying portion 80 can suppress damage such as fuzz and scratches in the peripheral region including the bent portion.
　また、燃料用フィルタ２０のフィルタ部材５２の折り曲げ部以外の周辺部は、溶着シール部７４すなわち溶着部である。このため、図１５に示すように、燃料タンク１２に燃料ポンプモジュール１０を挿入する際、燃料用フィルタ２０のフィルタ部材５２の溶着シール部７４（例えば、上辺部５２ａ（図１０参照））が燃料タンク１２の開口部１２ｂの口縁部に接触したとしても、溶着シール部７４によって毛羽立ちや傷付き等の損傷を抑制することができる。 Further, the peripheral portion other than the bent portion of the filter member 52 of the fuel filter 20 is a weld seal portion 74, that is, a weld portion. Therefore, as shown in FIG. 15, when the fuel pump module 10 is inserted into the fuel tank 12, the welding seal portion 74 (for example, the upper side portion 52 a (see FIG. 10)) of the filter member 52 of the fuel filter 20 is the fuel. Even if it contacts the rim of the opening 12 b of the tank 12, damage such as fuzzing or scratching can be suppressed by the welding seal portion 74.
　また、両固化部７８，８０（図１１及び図１２参照）は、燃料用フィルタ２０の搬送時における製品のフィルタ部材５２同士の擦れによる最外層のスパンボンド不織布５８ａの毛羽立ちの防止にも有効である。 Both solidified portions 78 and 80 (see FIGS. 11 and 12) are also effective in preventing fuzz of the outermost spunbond nonwoven fabric 58a due to friction between the filter members 52 of the product during transportation of the fuel filter 20. is there.
　また、両固化部７８，８０は、最外層のスパンボンド不織布５８ａに形成された塗装部である。したがって、最外層のスパンボンド不織布５８ａに対する塗装部の形成によって、両固化部７８，８０を容易に形成することができる。 Moreover, both the solidification parts 78 and 80 are the coating parts formed in the spunbond nonwoven fabric 58a of the outermost layer. Therefore, both solidified portions 78 and 80 can be easily formed by forming a coating portion on the outermost spunbond nonwoven fabric 58a.
　また、両固化部７８，８０の塗装部は、燃料で溶解される燃料溶解性を有する。したがって、燃料用フィルタ２０の使用によって、両固化部７８，８０が燃料により溶解されることで除去される。このため、最外層のスパンボンド不織布５８ａの両固化部７８，８０における濾過性能を再生させることができる。 Moreover, the coating part of both the solidification parts 78 and 80 has the fuel solubility melt | dissolved with a fuel. Therefore, by using the fuel filter 20, both solidified portions 78 and 80 are removed by being dissolved by the fuel. For this reason, the filtration performance in both the solidification parts 78 and 80 of the outermost spunbond nonwoven fabric 58a can be regenerated.
　また、両固化部７８，８０のうちの少なくとも一方の固化部には、燃料溶解性を有していない塗装部、例えば接着剤を用いてもよい。また、接着剤の塗布厚さは、例えば１μｍ以下とし、接着剤の塗布による燃料用フィルタ２０の性能変化を抑制するのが望ましい。また、両固化部７８，８０のうちの少なくとも一方の固化部である塗装部の材料には、フッ素樹脂等の摺動性向上剤を用いてもよい。 Also, at least one of the solidified portions 78 and 80 may be a painted portion that does not have fuel solubility, such as an adhesive. Further, it is desirable that the adhesive application thickness is 1 μm or less, for example, to suppress the performance change of the fuel filter 20 due to the adhesive application. In addition, a sliding property improver such as a fluororesin may be used as the material of the painted portion which is at least one of the solidified portions 78 and 80.
［実施形態４］実施形態４は、実施形態３に変更を加えたものであるから、その変更部分について説明し、重複する説明は省略する。図１６は燃料用フィルタを示す正面図、図１７は同じく下面図、図１８は同じく背面図である。図１６～図１８に示すように、本実施形態では、濾過材５８の第１の固化部（符号、８２を付す）及び第２の固化部（符号、８４を付す）が、最外層のスパンボンド不織布５８ａを熱溶融させることによって形成されている。すなわち、両固化部７８，８０は、最外層のスパンボンド不織布５８ａの溶着部である。したがって、別部材を要することなく、最外層のスパンボンド不織布５８ａに、両固化部８２，８４としての溶着部を形成することができる。 [Fourth Embodiment] Since the fourth embodiment is a modification of the third embodiment, the changed portion will be described, and a duplicate description will be omitted. 16 is a front view showing the fuel filter, FIG. 17 is a bottom view, and FIG. 18 is a rear view. As shown in FIGS. 16 to 18, in the present embodiment, the first solidified portion (labeled 82) and the second solidified portion (marked 84) of the filter medium 58 are the outermost layer spans. It is formed by thermally melting the bond nonwoven fabric 58a. That is, both solidified portions 78 and 80 are welded portions of the outermost spunbond nonwoven fabric 58a. Therefore, the welding part as both the solidification parts 82 and 84 can be formed in the outermost spunbond nonwoven fabric 58a without requiring a separate member.
　また、両固化部８２，８４のうちの少なくとも一方の固化部は、最外層のスパンボンド不織布５８ａの熱溶融部に代え、ドット溶着、熱板溶着等の溶着による溶着部により形成してもよい。この場合も、別部材を要することなく、最外層のスパンボンド不織布５８ａに、固化部としての溶着部を形成することができる。また、溶着部は、濾過材５８を二つ折りする前工程で施すことができる。また、溶着部は、少なくとも最外層のスパンボンド不織布５８ａに形成されていればよい。 In addition, at least one of the solidified portions 82 and 84 may be formed by a welded portion by welding such as dot welding or hot plate welding instead of the heat melting portion of the outermost spunbond nonwoven fabric 58a. . Also in this case, a welded portion as a solidified portion can be formed on the outermost spunbond nonwoven fabric 58a without requiring a separate member. Further, the welded portion can be applied in the previous step of folding the filter medium 58 in half. Moreover, the welding part should just be formed in the outermost layer spunbond nonwoven fabric 58a.
［実施形態５］実施形態５は、実施形態４に変更を加えたものであるから、その変更部分について説明し、重複する説明は省略する。図１９は燃料用フィルタの一部を示す断面図である。図１９に示すように、本実施形態では、実施形態４における濾過材５８の後側の平面部６１において、最外層のスパンボンド不織布５８ａと最内層のスパンボンド不織布５８ｄとの溶着部により第１の固化部（符号、８６を付す）が形成されている。また、これと同様に、実施形態４における第２の固化部８４（図１６～図１８参照））を形成してもよい。 [Fifth Embodiment] Since the fifth embodiment is a modification of the fourth embodiment, the changed portion will be described, and a duplicate description will be omitted. FIG. 19 is a sectional view showing a part of the fuel filter. As shown in FIG. 19, in the present embodiment, in the flat portion 61 on the rear side of the filter medium 58 in the fourth embodiment, a first welded portion between the outermost spunbond nonwoven fabric 58a and the innermost spunbond nonwoven fabric 58d is used. Solidified portion (reference numeral 86 is attached). Similarly, the second solidified portion 84 (see FIGS. 16 to 18) in the fourth embodiment may be formed.
［実施形態６］実施形態６は、実施形態１に変更を加えたものであるから、その変更部分について説明し、重複する説明は省略する。図２０は燃料用フィルタの一部を示す断面図である。図２０に示すように、フィルタ部材５２の濾過材（符号、９０を付す）は、複数枚（例えば５枚）の樹脂製のシート状の不織布９０ａ，９０ｂ，９０ｃ，９０ｄ，９０ｅを積層してなる多層構造（５層構造）を有している。濾過材９０の最外層には、スパンボンド法により製造されたシート状のスパンボンド不織布９０ａが配置されている。スパンボンド不織布９０ａの平均孔径は、例えば、１５～４０μｍである。また、濾過材９０の最内層には、スパンボンド法により製造されたシート状のスパンボンド不織布９０ｅが配置されている。最外層のスパンボンド不織布９０ａと最内層のスパンボンド不織布９０ｅには、例えば同じスパンボンド不織布が用いられている。 [Sixth Embodiment] Since the sixth embodiment is a modification of the first embodiment, the changed portion will be described, and a duplicate description will be omitted. FIG. 20 is a sectional view showing a part of the fuel filter. As shown in FIG. 20, the filter material (labeled with reference numeral 90) of the filter member 52 is formed by laminating a plurality of (for example, five) resin sheet nonwoven fabrics 90a, 90b, 90c, 90d, and 90e. It has a multilayer structure (5-layer structure). In the outermost layer of the filter medium 90, a sheet-like spunbond nonwoven fabric 90a manufactured by a spunbond method is disposed. The average pore diameter of the spunbond nonwoven fabric 90a is, for example, 15 to 40 μm. Further, in the innermost layer of the filter medium 90, a sheet-like spunbond nonwoven fabric 90e manufactured by a spunbond method is disposed. For example, the same spunbond nonwoven fabric is used for the outermost spunbond nonwoven fabric 90a and the innermost spunbond nonwoven fabric 90e.
　また、最外層と最内層との間の３つの中間層には、メルトブロウン法により製造されたシート状のメルトブロウン不織布９０ｂ，９０ｃ，９０ｄが配置されている。スパンボンド不織布９０ａ，９０ｅは、脱落繊維が極めて少なく、耐摩耗性に優れ、強度の高い不織布である。また、メルトブロウン不織布９０ｂ，９０ｃ，９０ｄは、スパンボンド不織布９０ａ，９０ｅよりもその目（平均孔径）を細かく形成することができる不織布である。また、メルトブロウン不織布９０ｂ，９０ｃ，９０ｄには、例えば、同じメルトブロウン不織布が用いられている。 Further, in the three intermediate layers between the outermost layer and the innermost layer, sheet-shaped meltblown nonwoven fabrics 90b, 90c, and 90d manufactured by the meltblown method are disposed. The spunbonded nonwoven fabrics 90a and 90e are nonwoven fabrics with extremely few falling fibers, excellent wear resistance, and high strength. The meltblown nonwoven fabrics 90b, 90c, and 90d are nonwoven fabrics that can form finer eyes (average pore diameter) than the spunbonded nonwoven fabrics 90a and 90e. Moreover, the same meltblown nonwoven fabric is used for the meltblown nonwoven fabric 90b, 90c, 90d, for example.
　図２１は図２０のXXI部を示す拡大図である。図２１に示すように、両スパンボンド不織布９０ａ，９０ｅは、平面状のフラット面からなる一方の面９２と、凹凸面からなる他方の面９４とを備えるシート状のスパンボンド不織布である。他方の面９４は、多数の凹部９４ａを有する凹凸面９４（他方の面と同一符号を付す）からなる。 FIG. 21 is an enlarged view showing the XXI portion of FIG. As shown in FIG. 21, both spunbond nonwoven fabrics 90a and 90e are sheet-like spunbond nonwoven fabrics provided with one surface 92 made of a flat flat surface and the other surface 94 made of an uneven surface. The other surface 94 is composed of a concavo-convex surface 94 having a large number of concave portions 94a (the same reference numerals are assigned to the other surface).
　図２２はスパンボンド不織布の凹凸面を示す図である。図２２に示すように、凹凸面９４の凹部９４ａは、四角形溝状に形成されており、隣り合う凹部９４ａの側辺同士が所定間隔を隔てて平行状をなすように多数個配列されている。凸部９４ｂは、隣り合う凹部９４ａの相互間に形成されており、全体的には格子状に形成されている。 FIG. 22 is a view showing an uneven surface of a spunbond nonwoven fabric. As shown in FIG. 22, the concave portions 94a of the concave-convex surface 94 are formed in a rectangular groove shape, and a large number of side portions of adjacent concave portions 94a are arranged in parallel with a predetermined interval therebetween. . The convex portions 94b are formed between the adjacent concave portions 94a, and are formed in a lattice shape as a whole.
　凹凸面９４の形状は、図２３～図２６に示される変更例１～４のものでもよい。図２３は、多数の凹部９４ａを、図２２における隣り合う凹部９４ａの間隔を縦方向及び横方向に広げるようにして配置したものである。また、図２４は、凹部９４ａを、丸形溝状に形成したものである。また、図２５は、凹部９４ａを、帯形溝状に形成したものである。また、図２６は、凹部９４ａを、十文字形溝状に形成したものである。 The shape of the concavo-convex surface 94 may be that of the modified examples 1 to 4 shown in FIGS. FIG. 23 shows a large number of recesses 94a arranged such that the interval between adjacent recesses 94a in FIG. 22 is increased in the vertical and horizontal directions. In FIG. 24, the recess 94a is formed in a round groove shape. In FIG. 25, the recess 94a is formed in a belt-like groove shape. In FIG. 26, the recess 94a is formed in a cross-shaped groove shape.
　なお、凸部９４ｂの数を増やしてもよい。また、凹部９４ａと凸部９４ｂとを逆配置として形成、すなわち凹部９４ａの形状で凸部９４ｂを形成し、凸部９４ｂの形状で凹部９４ａを形成してもよい。また、凹部９４ａ及び凸部９４の形状、配置形態等は適宜変更してもよい。また、異なる形状の凹部９４ａを組み合わせてもよい。また、異なる形状の凸部９４ｂを組み合わせてもよい。 In addition, you may increase the number of the convex parts 94b. Alternatively, the concave portion 94a and the convex portion 94b may be formed in an opposite arrangement, that is, the convex portion 94b may be formed in the shape of the concave portion 94a, and the concave portion 94a may be formed in the shape of the convex portion 94b. Moreover, you may change suitably the shape, arrangement | positioning form, etc. of the recessed part 94a and the convex part 94. FIG. Moreover, you may combine the recessed part 94a of a different shape. Moreover, you may combine the convex part 94b of a different shape.
　また、スパンボンド不織布９０ａ，９０ｅは、例えば、原料を紡糸し、紡糸した繊条を冷却しつつエジェクターにて引取り延伸し、ベルトコンベア上に開繊、捕集してウエブを形成し、そのウエブを熱エンボスローラーと熱フラットロールとの間で熱圧着するとともにエンボス加工した後、巻き取ることによって得られる。なお、熱エンボスローラーによりスパンボンド不織布９０ａ，９０ｅの凹凸面９４が形成されていると共に、熱フラットロールによりスパンボンド不織布９０ａ，９０ｅのフラット面９２が形成されている。なお、凹凸面９４は、「エンボス面」ともいう。 The spunbonded nonwoven fabrics 90a and 90e are, for example, spun raw materials, drawn and stretched by an ejector while cooling the spun filaments, opened and collected on a belt conveyor to form a web, The web is obtained by thermocompression bonding between a hot embossing roller and a hot flat roll, embossing, and winding. The uneven surface 94 of the spunbond nonwoven fabrics 90a and 90e is formed by the hot embossing roller, and the flat surface 92 of the spunbond nonwoven fabric 90a and 90e is formed by the heat flat roll. The uneven surface 94 is also referred to as an “embossed surface”.
　図２１に示すように、濾過材９０の最外層のスパンボンド不織布９０ａの一方の面９２すなわちフラット面９２（一方の面と同一符号を付す）は、フィルタ部材５２の外表面を形成するように配置されている。また、濾過材９０の最内層のスパンボンド不織布９０ｅのフラット面９２は、フィルタ部材５２の内表面を形成するように配置されている。なお、フィルタ部材５２の外表面は、燃料タンク１２（図１参照）のタンク内空間に面する側の表面である。また、フィルタ部材５２の内表面は、内部空間５３に面する側の表面である。 As shown in FIG. 21, one surface 92 of the outermost spunbond nonwoven fabric 90 a of the filter medium 90, that is, the flat surface 92 (the same reference numeral as that of one surface) forms the outer surface of the filter member 52. Has been placed. Further, the flat surface 92 of the innermost spunbond nonwoven fabric 90 e of the filter medium 90 is disposed so as to form the inner surface of the filter member 52. Note that the outer surface of the filter member 52 is the surface of the fuel tank 12 (see FIG. 1) that faces the space in the tank. Further, the inner surface of the filter member 52 is the surface facing the inner space 53.
　スパンボンド不織布９０ａ，９０ｅのフラット面９２と凹凸面９４との比較試験を行った。比較試験は、燃料タンク１２（図１参照）に対してフラット面９２と凹凸面９４とをそれぞれ意地悪的に所定回数（例えば、２０回）擦りつけることによって行った。そして、フラット面９２と凹凸面９４とを表面観察したところ、フラット面９２が、凹凸面９４と比べて、明らかに毛羽立ちが少ないことが判明した。すなわち、フラット面９２は、凹凸面９４と比べて、他部材との接触による繊維切れが生じ難いといえる。その理由としては、スパンボンド不織布９０ａ，９０ｅは長繊維でできており、フラット面９２では繊維切れはない又はほとんどないが、凹凸面９４では凸部９４ｂの先端側の断面角部で繊維切れが生じやすいためと考えられる。 The comparison test of the flat surface 92 and the uneven surface 94 of the spunbond nonwoven fabrics 90a and 90e was performed. The comparative test was performed by rubbing the flat surface 92 and the uneven surface 94 against the fuel tank 12 (see FIG. 1) a predetermined number of times (for example, 20 times). Then, when the surface of the flat surface 92 and the uneven surface 94 was observed, it was found that the flat surface 92 clearly had less fuzz as compared with the uneven surface 94. That is, it can be said that the flat surface 92 is less likely to cause fiber breakage due to contact with other members than the uneven surface 94. The reason is that the spunbonded nonwoven fabrics 90a and 90e are made of long fibers, and the flat surface 92 has no or almost no fiber breakage, but the uneven surface 94 has no fiber breakage at the cross-sectional corner on the tip side of the projection 94b. It is thought that it is likely to occur.
　したがって、最外層のスパンボンド不織布９０ａのフラット面９２をフィルタ部材５２の外表面を形成するように配置することによって、燃料タンク１２内への燃料用フィルタ２０の挿入時における他部材（例えば、燃料タンク１２の開口部１２ｂの口縁部）との接触によるフィルタ部材５２の外表面の毛羽立ちや傷付き等の損傷を抑制することができる。また、最外層のスパンボンド不織布９０ａの凹凸面９４は、そのスパンボンド不織布９０ａの内層側にある不織布９０ｂに面する。このため、最外層のスパンボンド不織布９０ａの凹凸面９４の毛羽立ちを抑制することができる。 Accordingly, by arranging the flat surface 92 of the outermost spunbond nonwoven fabric 90a so as to form the outer surface of the filter member 52, other members (for example, fuel) when the fuel filter 20 is inserted into the fuel tank 12 are disposed. It is possible to suppress damage such as fluffing and scratches on the outer surface of the filter member 52 due to contact with the mouth edge of the opening 12b of the tank 12. The uneven surface 94 of the outermost spunbond nonwoven fabric 90a faces the nonwoven fabric 90b on the inner layer side of the spunbond nonwoven fabric 90a. For this reason, the fluff of the uneven surface 94 of the outermost spunbond nonwoven fabric 90a can be suppressed.
　また、最内層のスパンボンド不織布９０ｅのフラット面９２をフィルタ部材５２の内表面を形成するように配置することによって、他部材（例えば、フィルタ部材５２の内部空間５３に配置された内骨部材５４）との接触によるフィルタ部材５２の内表面の毛羽立ちや傷付き等の損傷を抑制することができる。また、最内層のスパンボンド不織布９０ｅの凹凸面９４は、そのスパンボンド不織布９０ｅの外層側にある不織布９０ｄに面する。このため、最内層のスパンボンド不織布９０ｅの凹凸面９４の毛羽立ちを抑制することができる。なお、内骨部材５４は本明細書でいう「他部材」に相当する。 Further, by arranging the flat surface 92 of the innermost spunbond nonwoven fabric 90e so as to form the inner surface of the filter member 52, another member (for example, the inner bone member 54 disposed in the inner space 53 of the filter member 52). It is possible to suppress damage such as fluffing or scratching on the inner surface of the filter member 52 due to contact with the surface. The uneven surface 94 of the innermost spunbond nonwoven fabric 90e faces the nonwoven fabric 90d on the outer layer side of the spunbond nonwoven fabric 90e. For this reason, the fluff of the uneven surface 94 of the innermost spunbond nonwoven fabric 90e can be suppressed. The inner bone member 54 corresponds to “another member” in this specification.
　また、フラット面９２と凹凸面９４とを備えるスパンボンド不織布９０ａ，９０ｅは、表裏両面がフラット面であるスパンボンド不織布と比べると、強度が高く、厚さのばらつきを小さくできる。また、フラット面９２と凹凸面９４とを備えるスパンボンド不織布９０ａ，９０ｅは、表裏両面が凹凸面（エンボス面）であるスパンボンド不織布と比べると、コストが低い。このため、フラット面９２と凹凸面９４とを備えるスパンボンド不織布９０ａ，９０ｅによると、コスト面を考慮しつつ所定の強度を確保することができる。 Moreover, the spunbonded nonwoven fabrics 90a and 90e having the flat surface 92 and the uneven surface 94 have higher strength and smaller variations in thickness than the spunbonded nonwoven fabric in which both the front and back surfaces are flat surfaces. Moreover, the cost of the spunbonded nonwoven fabrics 90a and 90e having the flat surface 92 and the uneven surface 94 is lower than that of the spunbonded nonwoven fabric having both uneven surfaces (embossed surfaces). For this reason, according to the spunbonded nonwoven fabrics 90a and 90e provided with the flat surface 92 and the uneven surface 94, a predetermined strength can be ensured while considering the cost.
［他の実施形態］本発明は実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における変更が可能である。例えば、燃料用フィルタ２０は、燃料タンク１２内の燃料吸入口３９が連通されるものであればよく、その配置方法は限定されない。また、燃料用フィルタ２０は、燃料タンク１２の上面部に装着される上付けタイプの燃料供給装置に適用してもよい。また、濾過材５８，９０の最外層のスパンボンド不織布５８ａ，９０ａ以外の不織布には、実施形態以外の種々の不織布を用いてもよい。また、濾過材５８，９０は、少なくとも２枚以上の不織布が積層されていればよい。また、最外層のスパンボンド不織布５８ａ，９０ａと最内層のスパンボンド不織布５８ｄ，９０ｅには、異なるスパンボンド不織布を用いてもよい。また、最外層のスパンボンド不織布５８ａ，９０ａ及び／又は最内層のスパンボンド不織布５８ｄ，９０ｅには、表裏両面がフラット面あるいは凹凸面（エンボス面）であるスパンボンド不織布を用いてもよい。また、最外層のスパンボンド不織布９０ａの凹凸面９４をフィルタ部材５２の内表面を形成するように配置してもよい。また、最内層のスパンボンド不織布９０ｅの凹凸面９４をフィルタ部材５２の内表面を形成するように配置してもよい。また、最外層と最内層との間の中間層のメルトブロウン不織布５８ｂ，５８ｃ，９０ｂ～９０ｄには、異なるメルトブロウン不織布が用いてもよい。また、濾過材５８，９０は、上辺部５２ａ又は右辺部５２ｂにおいて二つ折りされ、その折り曲げ部以外の残りの周辺部が溶着等によりシール状態に接合されたものでもよい。また、濾過材５８，９０は、２枚の面材の周縁部が溶着等により全周に亘ってシール状態に接合されたものでもよい。また、固化部は、例えば燃料タンク１２の底壁１２ａに接触する濾過材５８の接触領域に形成してもよい。また、固化部の個数、固化部を形成する範囲等は、適宜選定することができる。また、固化部は、濾過材５８の前側の平面部６０に形成してもよい。
                                                                                   [Other Embodiments] The present invention is not limited to the embodiments and can be modified without departing from the gist of the present invention. For example, the fuel filter 20 is not limited as long as the fuel suction port 39 in the fuel tank 12 is communicated with the fuel filter 20. Further, the fuel filter 20 may be applied to an upper type fuel supply device mounted on the upper surface portion of the fuel tank 12. Moreover, you may use various nonwoven fabrics other than embodiment for nonwoven fabrics other than the spun bond nonwoven fabrics 58a and 90a of the outermost layer of the filter media 58 and 90. FIG. Moreover, the filter media 58 and 90 should just laminate | stack at least 2 or more nonwoven fabric. Further, different spunbond nonwoven fabrics may be used for the outermost spunbond nonwoven fabrics 58a and 90a and the innermost spunbond nonwoven fabrics 58d and 90e. Further, as the outermost layer spunbond nonwoven fabric 58a, 90a and / or the innermost layer spunbond nonwoven fabric 58d, 90e, a spunbond nonwoven fabric in which both front and back surfaces are flat surfaces or uneven surfaces (embossed surfaces) may be used. Further, the uneven surface 94 of the outermost spunbond nonwoven fabric 90 a may be arranged so as to form the inner surface of the filter member 52. Further, the uneven surface 94 of the innermost spunbond nonwoven fabric 90e may be disposed so as to form the inner surface of the filter member 52. Further, different melt-blown nonwoven fabrics may be used for the melt-blown nonwoven fabrics 58b, 58c, 90b to 90d in the intermediate layer between the outermost layer and the innermost layer. Moreover, the filter media 58 and 90 may be folded in two at the upper side portion 52a or the right side portion 52b, and the remaining peripheral portions other than the bent portion may be joined in a sealed state by welding or the like. Moreover, the filter media 58 and 90 may be one in which the peripheral portions of the two face materials are joined in a sealed state over the entire circumference by welding or the like. Further, the solidified portion may be formed in the contact region of the filter medium 58 that contacts the bottom wall 12a of the fuel tank 12, for example. In addition, the number of solidified portions, the range in which the solidified portions are formed, and the like can be selected as appropriate. Further, the solidified portion may be formed on the flat portion 60 on the front side of the filter medium 58.

Claims (10)

  1. 　シート状の濾過材により袋状に形成されたフィルタ部材を備えており、
    　前記フィルタ部材の内部空間に燃料タンク内の燃料吸入口が連通される燃料用フィルタであって、
    　前記濾過材は、複数枚の不織布からなる多層構造を有しており、
    　前記濾過材の最外層には、スパンボンド不織布が配置されている、燃料用フィルタ。     It is provided with a filter member formed into a bag shape with a sheet-like filter material,
    A fuel filter in which a fuel inlet in a fuel tank communicates with an internal space of the filter member,
    The filter medium has a multilayer structure composed of a plurality of nonwoven fabrics,
    A fuel filter in which a spunbond nonwoven fabric is disposed on the outermost layer of the filter medium.
  2. 　請求項１に記載の燃料用フィルタであって、
    　前記最外層のスパンボンド不織布は、平面状のフラット面からなる一方の面と、多数の凹部又は多数の凸部を有する凹凸面からなる他方の面とを備えており、
    　前記一方の面は、前記フィルタ部材の外表面を形成するように配置されている、燃料用フィルタ。     The fuel filter according to claim 1,
    The outermost layer spunbonded nonwoven fabric has one surface composed of a flat flat surface and the other surface composed of a concavo-convex surface having a large number of concave portions or a large number of convex portions,
    The fuel filter, wherein the one surface is disposed so as to form an outer surface of the filter member.
  3. 　請求項１又は２に記載の燃料用フィルタであって、
    　前記濾過材の最外層のスパンボンド不織布の少なくとも一部の領域には、固化部が形成されている、燃料用フィルタ。     The fuel filter according to claim 1 or 2,
    A fuel filter, wherein a solidified portion is formed in at least a part of the outermost spunbond nonwoven fabric of the filter medium.
  4. 　請求項３に記載の燃料用フィルタであって、
    　前記フィルタ部材は、前記濾過材が二つ折りされ、折り曲げ部以外の周縁部が溶着部により相互に接合されており、
    　前記固化部は、前記濾過材の折り曲げ部を含む周辺領域に形成されている、燃料用フィルタ。     The fuel filter according to claim 3,
    In the filter member, the filter medium is folded in two, and peripheral portions other than the bent portion are joined to each other by a welded portion,
    The solidified portion is a fuel filter formed in a peripheral region including a bent portion of the filter medium.
  5. 　請求項３又は４に記載の燃料用フィルタであって、
    　前記固化部は、前記最外層のスパンボンド不織布に形成された塗装部である、燃料用フィルタ。     The fuel filter according to claim 3 or 4,
    The said solidification part is a filter for fuels which is the coating part formed in the spunbond nonwoven fabric of the said outermost layer.
  6. 　請求項５に記載の燃料用フィルタであって、
    　前記塗装部は、燃料で溶解される燃料溶解性を有する、燃料用フィルタ。     The fuel filter according to claim 5,
    The said coating part is a fuel filter which has the fuel solubility melt | dissolved with a fuel.
  7. 　請求項３又は４に記載の燃料用フィルタであって、
    　前記固化部は、前記最外層のスパンボンド不織布の熱溶融部である、燃料用フィルタ。     The fuel filter according to claim 3 or 4,
    The solidified part is a fuel filter, which is a heat melting part of the outermost spunbonded nonwoven fabric.
  8. 　請求項３又は４に記載の燃料用フィルタであって、
    　前記固化部は、前記最外層のスパンボンド不織布の溶着部である、燃料用フィルタ。     The fuel filter according to claim 3 or 4,
    The solidified portion is a fuel filter, which is a welded portion of the outermost spunbond nonwoven fabric.
  9. 　請求項１～８のいずれか１つに記載の燃料用フィルタであって、
    　前記濾過材の最内層には、スパンボンド不織布が配置されている、燃料用フィルタ。     A fuel filter according to any one of claims 1 to 8,
    A fuel filter in which a spunbond nonwoven fabric is disposed in the innermost layer of the filter medium.
  10. 　請求項９に記載の燃料用フィルタであって、
    　前記最内層のスパンボンド不織布は、平面状のフラット面からなる一方の面と、多数の凹部又は多数の凸部を有する凹凸面からなる他方の面とを備えており、
    　前記一方の面は、前記フィルタ部材の内表面を形成するように配置されている、燃料用フィルタ。
                                                                                         The fuel filter according to claim 9, wherein
    The innermost layer spunbonded nonwoven fabric has one surface composed of a flat flat surface and the other surface composed of a concavo-convex surface having a large number of concave portions or a large number of convex portions,
    The fuel filter, wherein the one surface is disposed so as to form an inner surface of the filter member.
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JP2019019724A (en) * 2017-07-14 2019-02-07 株式会社ケーヒン Fuel supply device

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