WO2021221072A1 - Fuel supply device - Google Patents

Fuel supply device Download PDF

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Publication number
WO2021221072A1
WO2021221072A1 PCT/JP2021/016846 JP2021016846W WO2021221072A1 WO 2021221072 A1 WO2021221072 A1 WO 2021221072A1 JP 2021016846 W JP2021016846 W JP 2021016846W WO 2021221072 A1 WO2021221072 A1 WO 2021221072A1
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WO
WIPO (PCT)
Prior art keywords
fuel
flow path
filter
discharge port
supply device
Prior art date
Application number
PCT/JP2021/016846
Other languages
French (fr)
Japanese (ja)
Inventor
太一 中村
浩 佐藤
Original Assignee
株式会社ミツバ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ミツバ filed Critical 株式会社ミツバ
Priority to CN202180029791.9A priority Critical patent/CN115461534A/en
Publication of WO2021221072A1 publication Critical patent/WO2021221072A1/en

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Classifications

    • 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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • 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
    • 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
    • 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 supply device.
  • a fuel supply device for supplying fuel from a fuel tank to an internal combustion engine has been used in a vehicle.
  • a fuel supply device includes, for example, a fuel pump that pumps fuel in a fuel tank and pumps it to an internal combustion engine, a holder portion (holder) that houses the fuel pump, and a fuel that is formed inside the holder portion.
  • the discharge port (communication hole) where the fuel pumped by the pump is discharged, the fuel take-out pipe (supply pipe) that guides the fuel discharged from the discharge port to the internal combustion engine, and the fuel pressure inside the fuel flow path are constant.
  • a structure including a pressure regulator (pressure regulating valve) that suppresses the value is disclosed (see, for example, Patent Document 1).
  • the pressure regulator is provided in the return flow path branched from the fuel flow path between the discharge port and the fuel take-out pipe.
  • the fuel supply device is a filter (secondary filter) formed in a mesh shape with fine holes on the upstream side of the return flow path in the middle of the fuel flow path between the discharge port and the fuel take-out pipe. It has. The filter filters the fuel discharged from the discharge port and removes foreign matter from the fuel.
  • the filter not only filters the fuel flowing through the fuel flow path between the discharge port and the fuel outlet pipe, but also the fuel flowing through the return flow path.
  • a part of the wax (for example, copper powder) obtained by welding the brush and the pigtail may be peeled off and mixed as a foreign substance in the fuel.
  • abrasion powder generated by sliding between the brush and the commitator may be mixed as foreign matter in the fuel.
  • Foreign matter generated in such a fuel pump may clog the pressure regulator, and the function of the pressure regulator may not be maintained.
  • the present invention provides a fuel supply device capable of suppressing clogging of the pressure regulator with foreign matter in the fuel and maintaining the function of the pressure regulator.
  • the fuel supply device has a discharge port for pumping fuel and discharging the pumped fuel, and pumps the fuel to the internal combustion engine via the discharge port.
  • a pressure regulator that communicates with the discharge port via the fuel flow path and suppresses the fuel pressure of the fuel discharged from the discharge port to a constant value, and the discharge port and the pressure of the fuel flow path. It is characterized by including a filter which is arranged between the regulator and filters the fuel.
  • the fuel flow path branches from the fuel take-out flow path for communicating the discharge port and the internal combustion engine to the side opposite to the internal combustion engine, and the discharge port and the pressure
  • the filter may be arranged in the return flow path, having a return flow path for communicating with the regulator.
  • a holder portion for accommodating the fuel pump may be provided, and the holder portion may have the fuel flow path.
  • the filter includes a conical frame body and a mesh-shaped filter body attached to the frame body, and the frame body is a portion of the fuel flow path where the filter is arranged. It has an annular portion that is formed in an annular shape when viewed from the axial direction, and a side surface portion that extends from the annular portion along the axial direction and is formed tapered as it is separated from the annular portion.
  • the filter body may be attached to the side surface portion.
  • the holder portion and the frame body may be formed of a resin material.
  • the ring-shaped portion may have a metal frame on the inner peripheral portion.
  • the filter may be provided directly below the discharge port in the fuel flow direction.
  • the present invention it is possible to provide a fuel supply device capable of suppressing clogging of a pressure regulator with foreign matter in fuel and maintaining the function of the pressure regulator.
  • FIG. 1 is a cross-sectional view of the fuel supply device 1.
  • the fuel supply device 1 is arranged so as to be immersed in fuel in a fuel tank 2 of a vehicle such as an automobile or a motorcycle, and pumps up the fuel in the fuel tank 2 to create an internal combustion engine (not shown). ) Is pumped.
  • the upper side in the vertical direction is simply referred to as the upper side
  • the lower side in the vertical direction is simply referred to as the lower side.
  • the fuel supply device 1 includes a fuel pump 3, a holder portion 4 fixed to the upper wall 2a of the fuel tank 2 and accommodating the fuel pump 3 inside, and a pressure regulator 6 accommodated inside the holder portion 4. It includes a filter 30 and a filter unit 5 provided on the suction side (lower side of the fuel pump 3) of the fuel pump 3.
  • the fuel pump 3 is an upper pump that is attached to the upper wall 2a of the fuel tank 2 via the holder portion 4 and pumps fuel from the inside 2b of the fuel tank 2 and pumps it to the internal combustion engine.
  • the fuel pump 3 is formed in a cylindrical shape.
  • the fuel pump 3 has a pump unit 3a arranged on the filter unit 5 side and a motor unit 3b attached to the upper side of the pump unit 3a.
  • the pump unit 3a for example, a non-volumetric pump having an impeller 16 is used.
  • the pump portion 3a is composed of an impeller 16 and a pump case 17 formed so as to cover the entire impeller 16.
  • the impeller 16 is a disk-shaped member made of resin.
  • the impeller 16 is formed with a fuel flow path hole (not shown) penetrating in the wall thickness direction.
  • the impeller 16 is rotated by driving the motor unit 3b. Then, the fuel is pumped from the lower side to the upper side of the impeller 16 through the fuel flow path hole.
  • a suction portion 21 is provided in the lower portion 17a of the pump case 17 (that is, the bottom portion of the fuel pump 3) that covers the entire impeller 16.
  • the suction portion 21 is formed in a tubular shape. Fuel is pumped from the suction unit 21 into the pump unit 3a.
  • the motor unit 3b uses a DC motor with a brush (not shown). One end of a pigtail (not shown) is connected to the brush to supply electric power. The brush and pigtail are brazed using, for example, copper powder.
  • the output shaft 10 is arranged at the center of the motor unit 3b in the radial direction D2. The output shaft 10 is rotatably supported by the upper side of the motor portion 3b and the lower side of the pump portion 3a. The output shaft 10 is connected to the impeller 16 of the pump unit 3a. However, the impeller 16 is non-rotatably connected to the output shaft 10.
  • An outlet cover 11 is provided on the upper part of the motor unit 3b.
  • a discharge port 11a is formed on the outlet cover 11.
  • the discharge port 11a is a portion for discharging the fuel pumped by the fuel pump 3.
  • the fuel is pumped to the internal combustion engine via the discharge port 11a.
  • the discharge port 11a is provided with a check valve 12 for preventing backflow of fuel.
  • a step portion 11b is formed on the lower outer periphery of the outlet cover 11.
  • the pump portion 3a and the motor portion 3b are covered with the housing case 13.
  • the upper end portion of the housing case 13 is configured as a crimping portion 13a.
  • the crimping portion 13a is crimped to the stepped portion 11b of the outlet cover 11, and the outlet cover 11 is integrated with the motor portion 3b.
  • the pump unit 3a and the motor unit 3b are integrated.
  • the integrated pump portion 3a and motor portion 3b (that is, the fuel pump 3) are supported inside the holder portion 4.
  • the holder portion 4 is made of a resin material.
  • the holder portion 4 is composed of a lower cup 9, an upper cup 8 provided on the upper side of the lower cup 9, and a flange unit 7 provided on the upper side of the upper cup 8 and fixed to the upper wall 2a of the fuel tank 2. There is.
  • the lower cup 9 is formed in a bottomed cylindrical shape.
  • the axial direction of the lower cup 9 is along the axial direction D1 of the fuel pump 3.
  • the outer peripheral surface of the lower cup 9 is provided with an engaging convex portion (not shown) that projects outward in the radial direction D2.
  • the lower cup 9 is engaged with the upper cup 8 by the engaging protrusion.
  • the upper cup 8 includes a cylindrical cup body 8a that covers the outer peripheral surface of the fuel pump 3.
  • the axial direction of the cup body 8a is along the axial direction D1 of the fuel pump 3.
  • engaging pieces (not shown) extending downward are formed at equal intervals in a plurality of circumferential directions.
  • An engaging hole (not shown) is formed in the engaging piece.
  • the engaging hole of the engaging piece engages with the engaging convex portion provided on the lower cup 9.
  • the integrated upper cup 8 and lower cup 9 support the fuel pump 3.
  • the flange unit 7 provided on the upper side of the upper cup 8 includes a disk-shaped unit body 7a.
  • the unit main body 7a is inserted from the outside (upper side) into the opening 2h formed in the upper wall 2a of the fuel tank 2 and attached to the upper wall 2a. At this time, the upper surface of the flange unit 7 is exposed to the outside of the fuel tank 2.
  • the flange unit 7 is provided with a fuel take-out pipe 7b that communicates with the discharge port 11a of the fuel pump 3.
  • the fuel discharged from the discharge port 11a is pressure-fed to an internal combustion engine (not shown) via the fuel take-out pipe 7b.
  • the flange unit 7 is provided with a connector 7d that opens outward in the radial direction D2.
  • the connector 7d is capable of connecting a power supply harness connected to an external power source and a signal harness connector (neither shown) for outputting a sender gauge detection signal to an external control device.
  • a fuel flow path 7e communicating with the discharge port 11a is formed inside the flange unit 7.
  • the fuel discharged from the discharge port 11a flows through the fuel flow path 7e.
  • the fuel flow path 7e has a fuel take-out flow path 7f that communicates the discharge port 11a with the internal combustion engine, and a return flow path 7g that branches from the fuel take-out flow path 7f to the side opposite to the internal combustion engine.
  • the fuel take-out flow path 7f extends upward from the discharge port 11a.
  • the upper end of the fuel take-out flow path 7f communicates with the fuel take-out pipe 7b.
  • the return flow path 7g communicates the discharge port 11a with the pressure regulator 6.
  • the return flow path 7g is a horizontal flow path 40 extending in the horizontal direction from the upper end of the fuel take-out flow path 7f, and a vertical flow path 40 extending downward from the end of the horizontal flow path 40 opposite to the fuel take-out pipe 7b. It has a flow path 41 and.
  • a pressure regulator 6 is arranged in the vertical DC path 41 of the return flow path 7 g.
  • the pressure regulator 6 communicates with the discharge port 11a via the fuel flow path 7e.
  • the pressure regulator 6 suppresses the fuel pressure of the fuel discharged from the discharge port 11a to a constant value.
  • FIG. 2 is a perspective view of the filter 30.
  • FIG. 3 is a plan view of the annular portion 33 of the filter 30.
  • FIG. 3 is a plan view of the annular portion 33 as viewed from below.
  • a filter 30 is arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
  • the filter 30 is arranged in the vertical DC path 41 of the return flow path 7 g.
  • the filter 30 is provided in the immediate vicinity of the pressure regulator 6.
  • the filter 30 filters the fuel discharged from the discharge port 11a.
  • the filter 30 includes a frame body 31 formed in a conical shape and a mesh-shaped filter body 32 attached to the frame body 31.
  • the frame 31 is made of a resin material.
  • the length of the frame 31 in the axial direction D1 is, for example, 20 ⁇ m to 30 ⁇ m.
  • the frame body 31 has an annular portion 33 and a side surface portion 34.
  • the annular portion 33 is formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e.
  • the annular portion 33 is fixed to the vertical DC path 41 by, for example, being press-fitted.
  • the annular portion 33 is press-fitted so that dust is not generated during press-fitting.
  • the annular portion 33 has a metal frame 35 formed in an annular shape on the inner peripheral portion 33a.
  • the metal frame 35 is made of a metal material such as stainless steel that does not easily rust.
  • the metal frame 35 is provided in the annular portion 33 inside the annular portion 33 by, for example, insert molding.
  • the metal frame 35 and the portion of the annular portion 33 formed of the resin material have the same length in the axial direction D1.
  • the metal frame 35 is exposed at both ends of the annular portion 33 in the axial direction D1.
  • the side surface portion 34 extends upward from the annular portion 33 along the axial direction D1 and is formed to taper as it is separated from the annular portion 33.
  • the side surface portion 34 has an annular end portion 34a at an end portion of the end portion in the axial direction D1 opposite to the annular portion 33, and a rod-shaped portion 34b connecting the annular portion 33 and the annular end portion 34a. ing.
  • the annular end portion 34a is formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e.
  • the inner diameter of the annular end portion 34a is smaller than the inner diameter of the annular portion 33.
  • the rod-shaped portion 34b is a rod-shaped member extending in a straight line. A plurality of rod-shaped portions 34b are provided between the annular portion 33 and the annular end portion 34a.
  • the filter body 32 is attached to the frame 31 from the inside. Specifically, the filter main body 32 is attached to the inside of the annular end portion 34a and between the annular portion 33 and the annular end portion 34a. The filter main body 32 attached between the annular portion 33 and the annular end portion 34a is attached along the rod-shaped portion 34b. For example, a corrosive cloth is used for the filter body 32.
  • the filter unit 5 is connected to the pump portion 3a of the fuel pump 3 on the lower side of the lower cup 9.
  • the filter unit 5 includes a suction filter 5a that filters fuel.
  • the suction filter 5a communicates with the suction portion 21 of the pump portion 3a via the suction pipe 5b. Therefore, when the fuel in the fuel tank 2 is sucked by the fuel pump 3, the fuel in the fuel tank 2 is filtered by the suction filter 5a.
  • the filtered fuel is introduced into the suction section 21 of the pump section 3a via the suction pipe 5b.
  • the fuel introduced into the suction unit 21 passes through the inside of the pump unit 3a and is pumped to the upper side of the motor unit 3b.
  • the pumped fuel passes through the fuel flow path 7e. Then, the fuel that has passed through the fuel flow path 7e is pumped to the internal combustion engine (not shown) through the fuel take-out pipe 7b.
  • the fuel discharged from the discharge port 11a of the fuel pump 3 is pressure-fed to the internal combustion engine via the fuel flow path 7e and the fuel take-out pipe 7b.
  • a part of the fuel also fills the inside of the return flow path 7g. That is, the fuel in the fuel take-out flow path 7f, the fuel take-out pipe 7b, and the return flow path 7g has the same pressure.
  • the pressure regulator 6 acts, and a part of the fuel is returned from the pressure regulator 6 into the holder portion 4.
  • the fuel in the return flow path 7 g flows through the filter 30 to the pressure regulator 6.
  • the fuel pressure in the fuel flow path 7e, the fuel take-out pipe 7b, and the return flow path 7g is returned within a certain value.
  • the filter 30 is arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
  • the wax for example, copper powder
  • the abrasion powder generated by the sliding between the brush and the commitator is mixed in the fuel as foreign matter.
  • burrs generated during molding of the holder portion 4 may flow into the fuel as foreign matter.
  • the fuel discharged from the discharge port 11a can be filtered before reaching the pressure regulator 6.
  • the fuel flow path 7e branches from the fuel take-out flow path 7f, which communicates the discharge port 11a with the internal combustion engine, and the fuel take-out flow path 7f to the opposite side of the internal combustion engine, and communicates the discharge port 11a with the pressure regulator 6. It has a return flow path of 7 g.
  • the filter 30 is arranged in the return flow path 7g. According to the above configuration, by providing the filter 30 in the return flow path 7g, the internal combustion engine by the filter 30 can be obtained as compared with the case where the filter 30 is provided in the middle of the flow path from the discharge port 11a to the internal combustion engine. It is possible to reduce the resistance of the flowing fuel. Therefore, the fuel can be smoothly pumped to the internal combustion engine.
  • the fuel flowing through the return flow path 7g can be filtered before reaching the pressure regulator 6, it is possible to prevent foreign matter from clogging the pressure regulator 6. As a result, the function of the pressure regulator 6 can be maintained. Therefore, the function of the pressure regulator 6 can be maintained while smoothly pumping the fuel to the internal combustion engine. Further, since the fuel pumped to the internal combustion engine does not pass through the filter 30, the filter 30 can be miniaturized accordingly. Therefore, the fuel supply device 1 can be miniaturized.
  • the fuel supply device 1 includes a holder portion 4 that houses the fuel pump 3 inside.
  • the holder portion 4 has a fuel flow path 7e.
  • the fuel pump 3 and the pressure regulator 6 and the filter 30 arranged in the fuel flow path 7e can be provided inside the holder portion 4.
  • each component of the fuel supply device 1 can be integrated by the holder portion 4, so that the fuel supply device 1 can be easily assembled to the fuel tank 2. Further, the number of parts can be reduced, and the manufacturing cost of the fuel supply device 1 can be reduced.
  • the filter 30 includes a conical frame 31 and a mesh-shaped filter body 32 attached to the frame.
  • the frame 31 extends from the annular portion 33 formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e, and the annular portion 33 along the axial direction D1. It has a side surface portion 34, which is formed so as to be separated from the 33.
  • the filter main body 32 is attached to the side surface portion 34.
  • the frame body 31 is composed of only the annular portion 33, and the surface area of the filter main body 32 can be increased as compared with the case where the filter main body 32 is attached to the annular portion 33. Therefore, the corresponding years of the filter main body 32 can be extended. Further, since the amount of fuel passing through the filter main body 32 at one time can be increased, the fuel can be filtered more efficiently.
  • the holder portion 4 and the frame body 31 are formed of a resin material. According to the above configuration, since the holder portion 4 and the frame body 31 can be formed of the same resin material, the fuel supply device 1 can be efficiently manufactured. That is, the productivity of the fuel supply device 1 can be improved. By using the same material for the holder portion 4 and the frame body 31, the coefficient of linear expansion of the holder portion 4 and the frame body 31 can be made the same. As a result, it is possible to prevent the frame 31 once press-fitted and fixed to the fuel flow path 7e from being displaced.
  • the annular portion 33 has a metal frame 35 on the inner peripheral portion 33a.
  • the annular portion 33 receives a reaction force from the fuel flow path 7e.
  • the annular portion 33 may be deformed and the annular portion 33 may be loosened.
  • the metal frame 35 made of a metal material having a rigidity higher than that of the resin material presses the annular portion 33 from the inner peripheral portion 33a side toward the fuel flow path 7e. As a result, the annular portion 33 can be reliably fixed to the fuel flow path 7e.
  • FIG. 4 is a cross-sectional view of the fuel supply device 1.
  • the second embodiment is different from the first embodiment described above in that, as shown in FIG. 4, the filter 30 is provided directly below the discharge port 11a in the fuel distribution direction.
  • the filter 30 is provided directly below the discharge port 11a in the fuel distribution direction. As a result, the fuel supply device 1 can be reduced in the axial direction D1 and downsized.
  • the pump unit 3a is, for example, a non-volumetric pump having an impeller 16, but the present invention is not limited to this.
  • the pump unit 3a may pump fuel and pump it.
  • the filter 30 is provided in the immediate vicinity of the pressure regulator 6 (first embodiment), or the filter 30 is provided directly below the discharge port 11a in the fuel flow direction (second embodiment). ), but it is not limited to this.
  • the filter 30 may be arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
  • the filter 30 is arranged so that the annular portion 33 is on the lower side and the side surface portion 34 is on the upper side, but the present invention is not limited to this.
  • the filter 30 may be able to filter the fuel.
  • the filter 30 may be arranged so that the annular portion 33 is on the upper side and the side surface portion 34 is on the lower side.
  • the filter 30 is not limited to the case where the annular portion 33 of the frame body 31 is press-fitted and fixed to the fuel flow path 7e.
  • the filter 30 may be arranged so that the annular portion 33 of the frame body 31 is annular when viewed from the axial direction D1.
  • the gap between the annular portion 33 and the fuel flow path 7e can be eliminated, so that there is an advantage in that all the fuel passing through the filter 30 can be filtered.
  • the frame 31 of the filter 30 is formed in a conical shape, but the present invention is not limited to this.
  • the frame 31 may have a shape that allows the filter 30 to satisfy the filtration function.
  • the frame body 31 may be composed of only the annular portion 33. That is, the frame body 31 may be formed in an annular shape.
  • the frame 31 of the filter 30 is made of a resin material, but the present invention is not limited to this.
  • the frame 31 may be made of an elastically deformable material for press fitting into the fuel flow path 7e.
  • the frame 31 may be made of a metal material.
  • the length of the frame 31 in the axial direction D1 is, for example, 20 ⁇ m to 30 ⁇ m, but the length is not limited to this.
  • the frame 31 may be large enough to be arranged in the fuel flow path 7e.
  • the annular portion 33 of the frame body 31 has a metal frame 35 on the inner peripheral portion 33a, but the present invention is not limited to this.
  • the annular portion 33 may be press-fitted into the fuel flow path 7e, and may not have the metal frame 35 on the inner peripheral portion 33a.
  • the metal frame 35 and the portion formed by the resin material of the annular portion 33 have the same length in the axial direction D1, but the length is not limited to this.
  • the metal frame 35 may be provided on the inner peripheral portion 33a of the annular portion 33.
  • the length of the metal frame 35 and the portion of the annular portion 33 formed of the resin material do not have to be the same in the axial direction D1.
  • the metal frame 35 is exposed at both ends of the annular portion 33 in the axial direction D1, but the present invention is not limited to this.
  • the metal frame 35 may be provided on the inner peripheral portion 33a of the annular portion 33.
  • the metal frame 35 does not have to be exposed.
  • the metal frame 35 may be exposed only at the lower end of the annular portion 33 in the axial direction D1.
  • the metal frame 35 may be exposed inside the radial direction D2 of the annular portion 33.
  • the filter main body 32 is attached to the inside of the annular end portion 34a and between the annular portion 33 and the annular end portion 34a, but the present invention is not limited to this.
  • the filter body 32 may be attached so that the fuel can be filtered.
  • the filter body 32 may also be attached to the inside of the annular portion 33.

Abstract

Provided is a fuel supply device that can prevent foreign matter contained in fuel from clogging a pressure regulator, and that can maintain the function of the pressure regulator. This fuel supply device 1 comprises: a fuel pump 3 that draws up fuel, has a discharge port 11a for discharging the fuel that has been drawn up, and pumps the fuel to an internal combustion engine via the discharge port 11a; a pressure regulator 6 that communicates with the discharge port 11a via a fuel passage 7e and regulates the fuel pressure of the fuel discharged from the discharge port 11a to a fixed value; and a filter 30 that is disposed in the fuel passage 7e between the discharge port 11a and the pressure regulator 6 to filter the fuel.

Description

燃料供給装置Fuel supply device
　本発明は、燃料供給装置に関する。 The present invention relates to a fuel supply device.
　従来から、車両において燃料を燃料タンクから内燃機関へと供給するための燃料供給装置が用いられている。このような燃料供給装置としては、例えば、燃料タンク内の燃料を汲み上げて内燃機関へと圧送する燃料ポンプと、燃料ポンプを収容するホルダ部（ホルダ）と、ホルダ部の内部に形成され、燃料ポンプによって汲み上げられた燃料が吐出される吐出ポート（連通孔）と、吐出ポートから吐出された燃料を内燃機関へと導く燃料取出管（供給管）と、燃料流路の内部の燃圧を一定の値に抑えるプレッシャレギュレータ（圧力調整弁）と、を備えた構造が開示されている（例えば、特許文献１参照）。 Conventionally, a fuel supply device for supplying fuel from a fuel tank to an internal combustion engine has been used in a vehicle. Such a fuel supply device includes, for example, a fuel pump that pumps fuel in a fuel tank and pumps it to an internal combustion engine, a holder portion (holder) that houses the fuel pump, and a fuel that is formed inside the holder portion. The discharge port (communication hole) where the fuel pumped by the pump is discharged, the fuel take-out pipe (supply pipe) that guides the fuel discharged from the discharge port to the internal combustion engine, and the fuel pressure inside the fuel flow path are constant. A structure including a pressure regulator (pressure regulating valve) that suppresses the value is disclosed (see, for example, Patent Document 1).
　特許文献１に記載の燃料供給装置において、プレッシャレギュレータは、吐出ポートと燃料取出管との間の燃料流路から分岐したリターン流路中に設けられている。
　また、上記燃料供給装置は、吐出ポートと燃料取出管との燃料流路の途中であって、リターン流路よりも上流側に、細かな孔でメッシュ状に形成されたフィルタ（２次フィルタ）を備えている。フィルタは、吐出ポートから吐出された燃料をろ過して、燃料から異物を除去する。 In the fuel supply device described in Patent Document 1, the pressure regulator is provided in the return flow path branched from the fuel flow path between the discharge port and the fuel take-out pipe.
Further, the fuel supply device is a filter (secondary filter) formed in a mesh shape with fine holes on the upstream side of the return flow path in the middle of the fuel flow path between the discharge port and the fuel take-out pipe. It has. The filter filters the fuel discharged from the discharge port and removes foreign matter from the fuel.
特開２０１３－９６２５４号公報Japanese Unexamined Patent Publication No. 2013-96254
　上述のような燃料供給装置において、フィルタは、吐出ポートと燃料取出管との間の燃料流路を流通する燃料をろ過するだけでなく、リターン流路を流通する燃料もろ過する。
　ところで、ブラシ付きの燃料ポンプにおいて、ブラシとピグテールとを溶接したロウ（例えば銅紛）の一部が剥離し、燃料内に異物として混流する可能性があった。また、ブラシとコンミテータとの摺動で発生する摩耗粉が燃料内に異物として混流する可能性もあった。このような燃料ポンプ内で発生した異物がプレッシャレギュレータに詰まってしまい、プレッシャレギュレータの機能が維持できなくなる可能性があった。 In the fuel supply device as described above, the filter not only filters the fuel flowing through the fuel flow path between the discharge port and the fuel outlet pipe, but also the fuel flowing through the return flow path.
By the way, in a fuel pump with a brush, a part of the wax (for example, copper powder) obtained by welding the brush and the pigtail may be peeled off and mixed as a foreign substance in the fuel. In addition, there is a possibility that abrasion powder generated by sliding between the brush and the commitator may be mixed as foreign matter in the fuel. Foreign matter generated in such a fuel pump may clog the pressure regulator, and the function of the pressure regulator may not be maintained.
　そこで、本発明は、燃料中の異物がプレッシャレギュレータに詰まることを抑制し、プレッシャレギュレータの機能を維持できる燃料供給装置を提供する。 Therefore, the present invention provides a fuel supply device capable of suppressing clogging of the pressure regulator with foreign matter in the fuel and maintaining the function of the pressure regulator.
　上記の課題を解決するために、本発明に係る燃料供給装置は、燃料を汲み上げ、汲み上げられた前記燃料を吐出する吐出ポートを有し、前記吐出ポートを介して内燃機関へと前記燃料を圧送する燃料ポンプと、前記吐出ポートに燃料流路を介して連通され、前記吐出ポートから吐出された前記燃料の燃圧を一定の値に抑えるプレッシャレギュレータと、前記燃料流路の前記吐出ポートと前記プレッシャレギュレータとの間に配置され、前記燃料をろ過するフィルタと、を備えることを特徴とする。 In order to solve the above problems, the fuel supply device according to the present invention has a discharge port for pumping fuel and discharging the pumped fuel, and pumps the fuel to the internal combustion engine via the discharge port. A pressure regulator that communicates with the discharge port via the fuel flow path and suppresses the fuel pressure of the fuel discharged from the discharge port to a constant value, and the discharge port and the pressure of the fuel flow path. It is characterized by including a filter which is arranged between the regulator and filters the fuel.
　上記構成において、前記燃料流路は、前記吐出ポートと前記内燃機関とを連通させる燃料取出流路と、前記燃料取出流路から前記内燃機関とは反対側に分岐し、前記吐出ポートと前記プレッシャレギュレータとを連通させるリターン流路と、を有し、前記フィルタは、前記リターン流路に配置されてもよい。 In the above configuration, the fuel flow path branches from the fuel take-out flow path for communicating the discharge port and the internal combustion engine to the side opposite to the internal combustion engine, and the discharge port and the pressure The filter may be arranged in the return flow path, having a return flow path for communicating with the regulator.
　上記構成において、前記燃料ポンプを内部に収容するホルダ部を備え、前記ホルダ部は、前記燃料流路を有してもよい。 In the above configuration, a holder portion for accommodating the fuel pump may be provided, and the holder portion may have the fuel flow path.
　上記構成において、前記フィルタは、円錐形状の枠体と、前記枠体に張り付けられたメッシュ状のフィルタ本体と、を備え、前記枠体は、前記燃料流路における前記フィルタが配置された箇所の軸方向から見て環状に形成されている環状部と、前記環状部から、前記軸方向に沿って延び、前記環状部から離間するにしたがって先細りに形成されている側面部と、を有し、前記フィルタ本体は、前記側面部に張り付けられていてもよい。 In the above configuration, the filter includes a conical frame body and a mesh-shaped filter body attached to the frame body, and the frame body is a portion of the fuel flow path where the filter is arranged. It has an annular portion that is formed in an annular shape when viewed from the axial direction, and a side surface portion that extends from the annular portion along the axial direction and is formed tapered as it is separated from the annular portion. The filter body may be attached to the side surface portion.
　上記構成において、前記ホルダ部と前記枠体とは、樹脂材料により形成されていてもよい。 In the above configuration, the holder portion and the frame body may be formed of a resin material.
　上記構成において、記環状部は、内周部に金属枠を有してもよい。 In the above configuration, the ring-shaped portion may have a metal frame on the inner peripheral portion.
　上記構成において、前記フィルタは、前記燃料の流通方向において前記吐出ポートの直下に設けられていてもよい。 In the above configuration, the filter may be provided directly below the discharge port in the fuel flow direction.
　本発明によれば、燃料中の異物がプレッシャレギュレータに詰まることを抑制し、プレッシャレギュレータの機能を維持できる燃料供給装置を提供できる。 According to the present invention, it is possible to provide a fuel supply device capable of suppressing clogging of a pressure regulator with foreign matter in fuel and maintaining the function of the pressure regulator.
本発明の第１実施形態における燃料供給装置の断面図である。It is sectional drawing of the fuel supply apparatus in 1st Embodiment of this invention. 第１実施形態におけるフィルタの斜視図である。It is a perspective view of the filter in 1st Embodiment. 第１実施形態におけるフィルタの環状部の平面図である。It is a top view of the annular part of the filter in 1st Embodiment. 本発明の第２実施形態における燃料供給装置の断面図である。It is sectional drawing of the fuel supply apparatus in 2nd Embodiment of this invention.
（第１実施形態）
（燃料供給装置）
　次に、図１から図３に基づいて本発明の第１実施形態を説明する。
　図１は、燃料供給装置１の断面図である。
　図１に示すように、燃料供給装置１は、自動車及び自動二輪車等の車両の燃料タンク２内に燃料に浸漬されて配置されており、燃料タンク２内の燃料を汲み上げて内燃機関（不図示）に圧送するものである。
　以下、燃料タンク２に燃料供給装置１を取り付けた状態で、鉛直方向上側を単に上側、鉛直方向下側を単に下側と表現して説明する。 (First Embodiment)
(Fuel supply device)
Next, the first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is a cross-sectional view of the fuel supply device 1.
As shown in FIG. 1, the fuel supply device 1 is arranged so as to be immersed in fuel in a fuel tank 2 of a vehicle such as an automobile or a motorcycle, and pumps up the fuel in the fuel tank 2 to create an internal combustion engine (not shown). ) Is pumped.
Hereinafter, with the fuel supply device 1 attached to the fuel tank 2, the upper side in the vertical direction is simply referred to as the upper side, and the lower side in the vertical direction is simply referred to as the lower side.
　燃料供給装置１は、燃料ポンプ３と、燃料タンク２の上壁２ａに固定されていると共に燃料ポンプ３を内部に収容するホルダ部４と、ホルダ部４の内部に収容されたプレッシャレギュレータ６およびフィルタ３０と、燃料ポンプ３の吸入側（燃料ポンプ３の下側）に設けられているフィルタユニット５と、を備えている。 The fuel supply device 1 includes a fuel pump 3, a holder portion 4 fixed to the upper wall 2a of the fuel tank 2 and accommodating the fuel pump 3 inside, and a pressure regulator 6 accommodated inside the holder portion 4. It includes a filter 30 and a filter unit 5 provided on the suction side (lower side of the fuel pump 3) of the fuel pump 3.
（燃料ポンプ）
　燃料ポンプ３は、ホルダ部４を介して燃料タンク２の上壁２ａに取り付けられ、燃料タンク２の内部２ｂから燃料を汲み上げて内燃機関へと圧送する上付きポンプである。燃料ポンプ３は、円柱形状に形成されている。燃料ポンプ３は、フィルタユニット５側に配設されたポンプ部３ａと、ポンプ部３ａの上側に取り付けられたモータ部３ｂと、を有している。 (Fuel pump)
The fuel pump 3 is an upper pump that is attached to the upper wall 2a of the fuel tank 2 via the holder portion 4 and pumps fuel from the inside 2b of the fuel tank 2 and pumps it to the internal combustion engine. The fuel pump 3 is formed in a cylindrical shape. The fuel pump 3 has a pump unit 3a arranged on the filter unit 5 side and a motor unit 3b attached to the upper side of the pump unit 3a.
　ポンプ部３ａは、例えばインペラ１６を有する非容積型のポンプを用いる。ポンプ部３ａは、インペラ１６と、インペラ１６の全体を覆うように形成されたポンプケース１７とにより構成されている。 For the pump unit 3a, for example, a non-volumetric pump having an impeller 16 is used. The pump portion 3a is composed of an impeller 16 and a pump case 17 formed so as to cover the entire impeller 16.
　インペラ１６は、樹脂からなる円板状に形成された部材である。インペラ１６には、肉厚方向に貫通する燃料流路孔（不図示）が形成されている。インペラ１６は、モータ部３ｂの駆動により回転する。すると、燃料が燃料流路孔を通ってインペラ１６の下側から上側に向かって圧送される。 The impeller 16 is a disk-shaped member made of resin. The impeller 16 is formed with a fuel flow path hole (not shown) penetrating in the wall thickness direction. The impeller 16 is rotated by driving the motor unit 3b. Then, the fuel is pumped from the lower side to the upper side of the impeller 16 through the fuel flow path hole.
　インペラ１６の全体を覆うポンプケース１７の下部１７ａ（すなわち、燃料ポンプ３の底部）には、吸入部２１が設けられている。吸入部２１は、管状に形成されている。吸入部２１からポンプ部３ａ内に燃料が汲み上げられる。 A suction portion 21 is provided in the lower portion 17a of the pump case 17 (that is, the bottom portion of the fuel pump 3) that covers the entire impeller 16. The suction portion 21 is formed in a tubular shape. Fuel is pumped from the suction unit 21 into the pump unit 3a.
　モータ部３ｂは、ブラシ（不図示）付きの直流モータを用いる。ブラシには、電力を供給する為にピグテール（不図示）の一端部が接続されている。ブラシとピグテールとは、例えば銅紛等を用いてロウ付けされている。モータ部３ｂの径方向Ｄ２の中央には、出力軸１０が配置されている。出力軸１０は、モータ部３ｂの上側と、ポンプ部３ａの下側とにより回動自在に支持されている。出力軸１０は、ポンプ部３ａのインペラ１６に連結されている。ただし、インペラ１６は、出力軸１０に対して相対回転不能に連結されている。 The motor unit 3b uses a DC motor with a brush (not shown). One end of a pigtail (not shown) is connected to the brush to supply electric power. The brush and pigtail are brazed using, for example, copper powder. The output shaft 10 is arranged at the center of the motor unit 3b in the radial direction D2. The output shaft 10 is rotatably supported by the upper side of the motor portion 3b and the lower side of the pump portion 3a. The output shaft 10 is connected to the impeller 16 of the pump unit 3a. However, the impeller 16 is non-rotatably connected to the output shaft 10.
　モータ部３ｂの上部には、アウトレットカバー１１が設けられている。アウトレットカバー１１には、吐出ポート１１ａが形成されている。吐出ポート１１ａは、燃料ポンプ３により汲み上げられた燃料を吐出する部位である。燃料は、吐出ポート１１ａを介して内燃機関へと圧送される。吐出ポート１１ａには、燃料の逆流を防止するためのチェックバルブ１２が設けられている。アウトレットカバー１１の下部外周には、段差部１１ｂが形成されている。 An outlet cover 11 is provided on the upper part of the motor unit 3b. A discharge port 11a is formed on the outlet cover 11. The discharge port 11a is a portion for discharging the fuel pumped by the fuel pump 3. The fuel is pumped to the internal combustion engine via the discharge port 11a. The discharge port 11a is provided with a check valve 12 for preventing backflow of fuel. A step portion 11b is formed on the lower outer periphery of the outlet cover 11.
　ここで、ポンプ部３ａおよびモータ部３ｂは、ハウジングケース１３により覆われている。ハウジングケース１３の上側端部は、加締め部１３ａとして構成されている。この加締め部１３ａがアウトレットカバー１１の段差部１１ｂに加締められて、アウトレットカバー１１がモータ部３ｂと一体化される。これにより、ポンプ部３ａおよびモータ部３ｂが一体化される。一体化されたポンプ部３ａおよびモータ部３ｂ（すなわち燃料ポンプ３）は、ホルダ部４の内部に支持されている。 Here, the pump portion 3a and the motor portion 3b are covered with the housing case 13. The upper end portion of the housing case 13 is configured as a crimping portion 13a. The crimping portion 13a is crimped to the stepped portion 11b of the outlet cover 11, and the outlet cover 11 is integrated with the motor portion 3b. As a result, the pump unit 3a and the motor unit 3b are integrated. The integrated pump portion 3a and motor portion 3b (that is, the fuel pump 3) are supported inside the holder portion 4.
（ホルダ部）
　ホルダ部４は、樹脂材料により形成されている。ホルダ部４は、ロワーカップ９と、ロワーカップ９の上側に設けられたアッパーカップ８と、アッパーカップ８の上側に設けられ、燃料タンク２の上壁２ａに固定されたフランジユニット７とにより構成されている。 (Holder part)
The holder portion 4 is made of a resin material. The holder portion 4 is composed of a lower cup 9, an upper cup 8 provided on the upper side of the lower cup 9, and a flange unit 7 provided on the upper side of the upper cup 8 and fixed to the upper wall 2a of the fuel tank 2. There is.
　ロワーカップ９は、有底筒状に形成されている。ロワーカップ９の軸方向は、燃料ポンプ３の軸方向Ｄ１に沿っている。ロワーカップ９の外周面には、径方向Ｄ２の外側に向けて突出する係合凸部（不図示）が設けられている。ロワーカップ９は、係合凸部によってアッパーカップ８と係合している。 The lower cup 9 is formed in a bottomed cylindrical shape. The axial direction of the lower cup 9 is along the axial direction D1 of the fuel pump 3. The outer peripheral surface of the lower cup 9 is provided with an engaging convex portion (not shown) that projects outward in the radial direction D2. The lower cup 9 is engaged with the upper cup 8 by the engaging protrusion.
　アッパーカップ８は、燃料ポンプ３の外周面を覆う筒状のカップ本体８ａを備える。カップ本体８ａの軸方向は、燃料ポンプ３の軸方向Ｄ１に沿っている。カップ本体８ａには、下方に向けて延びる係合片（不図示）が複数周方向に等間隔で形成されている。係合片には係合孔（不図示）が形成されている。係合片の係合孔は、ロワーカップ９に設けられた係合凸部と係合する。これにより、アッパーカップ８およびロワーカップ９は、一体化される。一体化されたアッパーカップ８とロワーカップ９とは、燃料ポンプ３を支持する。 The upper cup 8 includes a cylindrical cup body 8a that covers the outer peripheral surface of the fuel pump 3. The axial direction of the cup body 8a is along the axial direction D1 of the fuel pump 3. On the cup body 8a, engaging pieces (not shown) extending downward are formed at equal intervals in a plurality of circumferential directions. An engaging hole (not shown) is formed in the engaging piece. The engaging hole of the engaging piece engages with the engaging convex portion provided on the lower cup 9. As a result, the upper cup 8 and the lower cup 9 are integrated. The integrated upper cup 8 and lower cup 9 support the fuel pump 3.
　アッパーカップ８の上側に設けられたフランジユニット７は、円板状のユニット本体７ａを備える。ユニット本体７ａは、燃料タンク２の上壁２ａに形成されている開口部２ｈに外側（上側）から挿入され、上壁２ａに取り付けられている。このとき、フランジユニット７の上面は、燃料タンク２の外部に露出した状態となる。
　フランジユニット７には、燃料ポンプ３の吐出ポート１１ａと連通する燃料取出管７ｂが設けられている。吐出ポート１１ａから吐出された燃料は、燃料取出管７ｂを介して内燃機関（不図示）へと圧送される。 The flange unit 7 provided on the upper side of the upper cup 8 includes a disk-shaped unit body 7a. The unit main body 7a is inserted from the outside (upper side) into the opening 2h formed in the upper wall 2a of the fuel tank 2 and attached to the upper wall 2a. At this time, the upper surface of the flange unit 7 is exposed to the outside of the fuel tank 2.
The flange unit 7 is provided with a fuel take-out pipe 7b that communicates with the discharge port 11a of the fuel pump 3. The fuel discharged from the discharge port 11a is pressure-fed to an internal combustion engine (not shown) via the fuel take-out pipe 7b.
　フランジユニット７には、径方向Ｄ２の外側に向けて開口するコネクタ７ｄが設けられている。コネクタ７ｄは、外部電源に接続された電源用ハーネスと、センダゲージの検出信号を外部制御機器に出力する信号用ハーネスのコネクタ（何れも図示せず）とが接続可能とされている。
　フランジユニット７の内部には、吐出ポート１１ａに連通する燃料流路７ｅが形成されている。燃料流路７ｅには、吐出ポート１１ａから吐出された燃料が流通する。燃料流路７ｅは、吐出ポート１１ａと内燃機関とを連通させる燃料取出流路７ｆと、燃料取出流路７ｆから内燃機関とは反対側に分岐するリターン流路７ｇと、を有している。
　燃料取出流路７ｆは、吐出ポート１１ａから上側に向かって延びている。燃料取出流路７ｆの上端は、燃料取出管７ｂに連通している。
　リターン流路７ｇは、吐出ポート１１ａとプレッシャレギュレータ６とを連通させる。リターン流路７ｇは、燃料取出流路７ｆの上端から水平方向に延びる水平流路４０と、水平流路４０の端部のうち燃料取出管７ｂとは反対側の端部から下側に延びる鉛直流路４１と、を有している。 The flange unit 7 is provided with a connector 7d that opens outward in the radial direction D2. The connector 7d is capable of connecting a power supply harness connected to an external power source and a signal harness connector (neither shown) for outputting a sender gauge detection signal to an external control device.
Inside the flange unit 7, a fuel flow path 7e communicating with the discharge port 11a is formed. The fuel discharged from the discharge port 11a flows through the fuel flow path 7e. The fuel flow path 7e has a fuel take-out flow path 7f that communicates the discharge port 11a with the internal combustion engine, and a return flow path 7g that branches from the fuel take-out flow path 7f to the side opposite to the internal combustion engine.
The fuel take-out flow path 7f extends upward from the discharge port 11a. The upper end of the fuel take-out flow path 7f communicates with the fuel take-out pipe 7b.
The return flow path 7g communicates the discharge port 11a with the pressure regulator 6. The return flow path 7g is a horizontal flow path 40 extending in the horizontal direction from the upper end of the fuel take-out flow path 7f, and a vertical flow path 40 extending downward from the end of the horizontal flow path 40 opposite to the fuel take-out pipe 7b. It has a flow path 41 and.
（プレッシャレギュレータ）
　リターン流路７ｇの鉛直流路４１には、プレッシャレギュレータ６が配置されている。プレッシャレギュレータ６は、吐出ポート１１ａに燃料流路７ｅを介して連通されている。プレッシャレギュレータ６は、吐出ポート１１ａから吐出された燃料の燃圧を一定の値に抑えるものである。 (Pressure regulator)
A pressure regulator 6 is arranged in the vertical DC path 41 of the return flow path 7 g. The pressure regulator 6 communicates with the discharge port 11a via the fuel flow path 7e. The pressure regulator 6 suppresses the fuel pressure of the fuel discharged from the discharge port 11a to a constant value.
（フィルタ）
　図２は、フィルタ３０の斜視図である。
　図３は、フィルタ３０の環状部３３の平面図である。図３は、環状部３３を下側から見た平面図である。
　図１から図３に示すように、燃料流路７ｅの吐出ポート１１ａとプレッシャレギュレータ６との間に、フィルタ３０が配置されている。本実施形態において、フィルタ３０は、リターン流路７ｇの鉛直流路４１に配置されている。フィルタ３０は、プレッシャレギュレータ６の直近に設けられている。フィルタ３０は、吐出ポート１１ａから吐出された燃料をろ過するものである。フィルタ３０は、円錐形状に形成された枠体３１と、枠体３１に張り付けられたメッシュ状のフィルタ本体３２と、を備えている。 (filter)
FIG. 2 is a perspective view of the filter 30.
FIG. 3 is a plan view of the annular portion 33 of the filter 30. FIG. 3 is a plan view of the annular portion 33 as viewed from below.
As shown in FIGS. 1 to 3, a filter 30 is arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6. In the present embodiment, the filter 30 is arranged in the vertical DC path 41 of the return flow path 7 g. The filter 30 is provided in the immediate vicinity of the pressure regulator 6. The filter 30 filters the fuel discharged from the discharge port 11a. The filter 30 includes a frame body 31 formed in a conical shape and a mesh-shaped filter body 32 attached to the frame body 31.
　枠体３１は、樹脂材料により形成されている。枠体３１の軸方向Ｄ１の長さは、例えば２０μｍから３０μｍである。枠体３１は、環状部３３と側面部３４とを有している。
　環状部３３は、燃料流路７ｅにおけるフィルタ３０が配置された箇所の軸方向Ｄ１から見て環状に形成されている。環状部３３は、例えば圧入されることにより、鉛直流路４１に固定されている。環状部３３は、圧入時にごみが発生しないように圧入される。環状部３３は、内周部３３ａに、環状に形成された金属枠３５を有している。金属枠３５は、錆びつきにくいステンレス等の金属材料により形成されている。金属枠３５は、環状部３３に例えばインサート成形により環状部３３の内部に設けられている。金属枠３５と、環状部３３の樹脂材料により形成された部分とは、軸方向Ｄ１の長さが同一である。金属枠３５は、環状部３３の軸方向Ｄ１の両端で露出している。 The frame 31 is made of a resin material. The length of the frame 31 in the axial direction D1 is, for example, 20 μm to 30 μm. The frame body 31 has an annular portion 33 and a side surface portion 34.
The annular portion 33 is formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e. The annular portion 33 is fixed to the vertical DC path 41 by, for example, being press-fitted. The annular portion 33 is press-fitted so that dust is not generated during press-fitting. The annular portion 33 has a metal frame 35 formed in an annular shape on the inner peripheral portion 33a. The metal frame 35 is made of a metal material such as stainless steel that does not easily rust. The metal frame 35 is provided in the annular portion 33 inside the annular portion 33 by, for example, insert molding. The metal frame 35 and the portion of the annular portion 33 formed of the resin material have the same length in the axial direction D1. The metal frame 35 is exposed at both ends of the annular portion 33 in the axial direction D1.
　側面部３４は、環状部３３から軸方向Ｄ１に沿って上側に延び、環状部３３から離間するにしたがって先細りに形成されている。側面部３４は、軸方向Ｄ１における端部のうち環状部３３とは反対側の端部に環状端部３４ａと、環状部３３と環状端部３４ａとを接続する棒状部３４ｂと、を有している。
　環状端部３４ａは、燃料流路７ｅにおけるフィルタ３０が配置された箇所の軸方向Ｄ１から見て環状に形成されている。環状端部３４ａの内径は、環状部３３の内径よりも小さい。
　棒状部３４ｂは、直線状に延びる棒状の部材である。棒状部３４ｂは、環状部３３と環状端部３４ａとの間に複数設けられている。 The side surface portion 34 extends upward from the annular portion 33 along the axial direction D1 and is formed to taper as it is separated from the annular portion 33. The side surface portion 34 has an annular end portion 34a at an end portion of the end portion in the axial direction D1 opposite to the annular portion 33, and a rod-shaped portion 34b connecting the annular portion 33 and the annular end portion 34a. ing.
The annular end portion 34a is formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e. The inner diameter of the annular end portion 34a is smaller than the inner diameter of the annular portion 33.
The rod-shaped portion 34b is a rod-shaped member extending in a straight line. A plurality of rod-shaped portions 34b are provided between the annular portion 33 and the annular end portion 34a.
　フィルタ本体３２は、枠体３１に内側から張り付けられている。具体的には、フィルタ本体３２は、環状端部３４ａの内側と、環状部３３と環状端部３４ａとの間と、に張り付けられている。環状部３３と環状端部３４ａとの間に張り付けられたフィルタ本体３２は、棒状部３４ｂに沿って張り付けられている。フィルタ本体３２には、例えば腐食布が用いられている。 The filter body 32 is attached to the frame 31 from the inside. Specifically, the filter main body 32 is attached to the inside of the annular end portion 34a and between the annular portion 33 and the annular end portion 34a. The filter main body 32 attached between the annular portion 33 and the annular end portion 34a is attached along the rod-shaped portion 34b. For example, a corrosive cloth is used for the filter body 32.
（フィルタユニット）
　図１に示すように、ロワーカップ９の下側において、フィルタユニット５が燃料ポンプ３のポンプ部３ａに連結されている。フィルタユニット５は、燃料をろ過するサクションフィルタ５ａを備える。サクションフィルタ５ａは、吸入管５ｂを介して、ポンプ部３ａの吸入部２１と連通する。そのため、燃料ポンプ３によって燃料タンク２内の燃料を吸入する際、燃料タンク２内の燃料は、サクションフィルタ５ａによってろ過される。ろ過された燃料は、吸入管５ｂを介して、ポンプ部３ａの吸入部２１に導入される。吸入部２１に導入された燃料は、ポンプ部３ａ内を通過してモータ部３ｂの上側に圧送される。圧送された燃料は、燃料流路７ｅを通過する。そして燃料流路７ｅを通過した燃料は、燃料取出管７ｂを通って内燃機関（不図示）へと圧送される。 (Filter unit)
As shown in FIG. 1, the filter unit 5 is connected to the pump portion 3a of the fuel pump 3 on the lower side of the lower cup 9. The filter unit 5 includes a suction filter 5a that filters fuel. The suction filter 5a communicates with the suction portion 21 of the pump portion 3a via the suction pipe 5b. Therefore, when the fuel in the fuel tank 2 is sucked by the fuel pump 3, the fuel in the fuel tank 2 is filtered by the suction filter 5a. The filtered fuel is introduced into the suction section 21 of the pump section 3a via the suction pipe 5b. The fuel introduced into the suction unit 21 passes through the inside of the pump unit 3a and is pumped to the upper side of the motor unit 3b. The pumped fuel passes through the fuel flow path 7e. Then, the fuel that has passed through the fuel flow path 7e is pumped to the internal combustion engine (not shown) through the fuel take-out pipe 7b.
　このような構成のもと、燃料ポンプ３の吐出ポート１１ａから吐出された燃料は、燃料流路７ｅ、燃料取出管７ｂを介して内燃機関へと圧送される。この際、燃料の一部は、リターン流路７ｇ内も満たす。つまり、燃料取出流路７ｆ、燃料取出管７ｂ、リターン流路７ｇ内の燃料は、同圧である。
　ここで、燃料取出流路７ｆや燃料取出管７ｂの燃圧が一定以上に高まるとプレッシャレギュレータ６が作用して、このプレッシャレギュレータ６から燃料の一部がホルダ部４内へと戻される。この際、リターン流路７ｇの燃料は、フィルタ３０を通ってプレッシャレギュレータ６へと流れていく。これにより、燃料流路７ｅ、燃料取出管７ｂ、リターン流路７ｇ内の燃圧が一定値以内に戻される。 Under such a configuration, the fuel discharged from the discharge port 11a of the fuel pump 3 is pressure-fed to the internal combustion engine via the fuel flow path 7e and the fuel take-out pipe 7b. At this time, a part of the fuel also fills the inside of the return flow path 7g. That is, the fuel in the fuel take-out flow path 7f, the fuel take-out pipe 7b, and the return flow path 7g has the same pressure.
Here, when the fuel pressure of the fuel take-out flow path 7f or the fuel take-out pipe 7b rises above a certain level, the pressure regulator 6 acts, and a part of the fuel is returned from the pressure regulator 6 into the holder portion 4. At this time, the fuel in the return flow path 7 g flows through the filter 30 to the pressure regulator 6. As a result, the fuel pressure in the fuel flow path 7e, the fuel take-out pipe 7b, and the return flow path 7g is returned within a certain value.
（作用効果）
　上述した実施形態によれば、フィルタ３０は、燃料流路７ｅの吐出ポート１１ａとプレッシャレギュレータ６との間に配置されている。
　ところで、ブラシとピグテールとを溶接したロウ（例えば銅粉）が一部剥離して燃料内に混流したり、ブラシとコンミテータとの摺動で発生する摩耗粉が燃料内に異物として混流したりすることがある。また、ホルダ部４の成形時に発生するバリが燃料内に異物として混流することもある。上記構成によれば、吐出ポート１１ａから吐出された燃料を、プレッシャレギュレータ６に到達する前にろ過できる。これにより、剥離したロウや摩耗粉、バリ等の燃料ポンプ３やホルダ部４内で発生した大きい粒径の異物を除去できるので、異物がプレッシャレギュレータ６に詰まることを抑制できる。したがって、プレッシャレギュレータ６の機能を維持できる。 (Action effect)
According to the above-described embodiment, the filter 30 is arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
By the way, the wax (for example, copper powder) obtained by welding the brush and the pigtail is partially peeled off and mixed in the fuel, or the abrasion powder generated by the sliding between the brush and the commitator is mixed in the fuel as foreign matter. Sometimes. In addition, burrs generated during molding of the holder portion 4 may flow into the fuel as foreign matter. According to the above configuration, the fuel discharged from the discharge port 11a can be filtered before reaching the pressure regulator 6. As a result, foreign matter having a large particle size generated in the fuel pump 3 and the holder portion 4, such as peeled wax, abrasion powder, and burrs, can be removed, so that foreign matter can be prevented from being clogged in the pressure regulator 6. Therefore, the function of the pressure regulator 6 can be maintained.
　燃料流路７ｅは、吐出ポート１１ａと内燃機関とを連通させる燃料取出流路７ｆと、燃料取出流路７ｆから内燃機関とは反対側に分岐し、吐出ポート１１ａとプレッシャレギュレータ６とを連通させるリターン流路７ｇと、を有している。フィルタ３０は、リターン流路７ｇに配置されている。
　上記構成によれば、リターン流路７ｇにフィルタ３０を設けることで、吐出ポート１１ａから内燃機関へと向かう流路の途中にフィルタ３０を設ける場合と比較して、このフィルタ３０による内燃機関へと流れる燃料の抵抗を受けにくくすることができる。このため、内燃機関まで燃料をスムーズに圧送させることができる。
　また、リターン流路７ｇを流通する燃料をプレッシャレギュレータ６に到達する前にろ過できるので、異物がプレッシャレギュレータ６に詰まることを抑制できる。これにより、プレッシャレギュレータ６の機能を維持できる。
　したがって、燃料を内燃機関へスムーズに圧送しつつ、プレッシャレギュレータ６の機能を維持できる。
　また、内燃機関へと圧送される燃料は、フィルタ３０を通過しないので、その分だけフィルタ３０を小型化できる。したがって、燃料供給装置１を小型化できる。 The fuel flow path 7e branches from the fuel take-out flow path 7f, which communicates the discharge port 11a with the internal combustion engine, and the fuel take-out flow path 7f to the opposite side of the internal combustion engine, and communicates the discharge port 11a with the pressure regulator 6. It has a return flow path of 7 g. The filter 30 is arranged in the return flow path 7g.
According to the above configuration, by providing the filter 30 in the return flow path 7g, the internal combustion engine by the filter 30 can be obtained as compared with the case where the filter 30 is provided in the middle of the flow path from the discharge port 11a to the internal combustion engine. It is possible to reduce the resistance of the flowing fuel. Therefore, the fuel can be smoothly pumped to the internal combustion engine.
Further, since the fuel flowing through the return flow path 7g can be filtered before reaching the pressure regulator 6, it is possible to prevent foreign matter from clogging the pressure regulator 6. As a result, the function of the pressure regulator 6 can be maintained.
Therefore, the function of the pressure regulator 6 can be maintained while smoothly pumping the fuel to the internal combustion engine.
Further, since the fuel pumped to the internal combustion engine does not pass through the filter 30, the filter 30 can be miniaturized accordingly. Therefore, the fuel supply device 1 can be miniaturized.
　燃料供給装置１は、燃料ポンプ３を内部に収容するホルダ部４を備えている。ホルダ部４は、燃料流路７ｅを有している。
　上記構成によれば、燃料ポンプ３と、燃料流路７ｅに配置されるプレッシャレギュレータ６およびフィルタ３０と、をホルダ部４の内部に設けることができる。これにより、燃料供給装置１の各部品をホルダ部４によって一体化できるので、燃料タンク２に燃料供給装置１を組付けることが容易になる。
　また、部品点数が減少して燃料供給装置１の製造コストを低減できる。 The fuel supply device 1 includes a holder portion 4 that houses the fuel pump 3 inside. The holder portion 4 has a fuel flow path 7e.
According to the above configuration, the fuel pump 3 and the pressure regulator 6 and the filter 30 arranged in the fuel flow path 7e can be provided inside the holder portion 4. As a result, each component of the fuel supply device 1 can be integrated by the holder portion 4, so that the fuel supply device 1 can be easily assembled to the fuel tank 2.
Further, the number of parts can be reduced, and the manufacturing cost of the fuel supply device 1 can be reduced.
　フィルタ３０は、円錐形状の枠体３１と、前記枠体に張り付けられたメッシュ状のフィルタ本体３２と、を備えている。枠体３１は、燃料流路７ｅにおけるフィルタ３０が配置された箇所の軸方向Ｄ１から見て環状に形成されている環状部３３と、環状部３３から、軸方向Ｄ１に沿って延び、環状部３３から離間するにしたがって先細りに形成されている側面部３４と、を有している。フィルタ本体３２は、側面部３４に張り付けられている。
　上記構成によれば、枠体３１が環状部３３のみから構成され、環状部３３にフィルタ本体３２が張り付けられる場合と比較して、フィルタ本体３２の表面積を拡大できる。したがって、フィルタ本体３２の対応年数を延ばすことができる。また、フィルタ本体３２を一度に通過する燃料の量を増加させることができるので、燃料をより効率的にろ過することが可能となる。 The filter 30 includes a conical frame 31 and a mesh-shaped filter body 32 attached to the frame. The frame 31 extends from the annular portion 33 formed in an annular shape when viewed from the axial direction D1 at the location where the filter 30 is arranged in the fuel flow path 7e, and the annular portion 33 along the axial direction D1. It has a side surface portion 34, which is formed so as to be separated from the 33. The filter main body 32 is attached to the side surface portion 34.
According to the above configuration, the frame body 31 is composed of only the annular portion 33, and the surface area of the filter main body 32 can be increased as compared with the case where the filter main body 32 is attached to the annular portion 33. Therefore, the corresponding years of the filter main body 32 can be extended. Further, since the amount of fuel passing through the filter main body 32 at one time can be increased, the fuel can be filtered more efficiently.
　ホルダ部４と枠体３１とは、樹脂材料により形成されている。
　上記構成によれば、ホルダ部４と枠体３１とを同じ樹脂材料で形成できるので、燃料供給装置１を効率良く製造できる。すなわち、燃料供給装置１の生技性を向上できる。
　ホルダ部４と枠体３１とに同じ材料を用いることで、ホルダ部４と枠体３１との線膨張係数を同じにできる。これにより、燃料流路７ｅに一旦圧入固定した枠体３１の位置がずれてしまうことを防止できる。 The holder portion 4 and the frame body 31 are formed of a resin material.
According to the above configuration, since the holder portion 4 and the frame body 31 can be formed of the same resin material, the fuel supply device 1 can be efficiently manufactured. That is, the productivity of the fuel supply device 1 can be improved.
By using the same material for the holder portion 4 and the frame body 31, the coefficient of linear expansion of the holder portion 4 and the frame body 31 can be made the same. As a result, it is possible to prevent the frame 31 once press-fitted and fixed to the fuel flow path 7e from being displaced.
　環状部３３は、内周部３３ａに金属枠３５を有している。
　ところで環状部３３が燃料流路７ｅに圧入固定される場合、環状部３３は燃料流路７ｅから反力を受ける。これにより、環状部３３が変形して、環状部３３の固定が緩んでしまう可能性がある。
　上記構成によれば、樹脂材料よりも剛性の大きい金属材料で形成された金属枠３５は、環状部３３を内周部３３ａ側から燃料流路７ｅに向けて押し付ける。これにより、燃料流路７ｅに環状部３３を確実に固定できる。 The annular portion 33 has a metal frame 35 on the inner peripheral portion 33a.
By the way, when the annular portion 33 is press-fitted and fixed to the fuel flow path 7e, the annular portion 33 receives a reaction force from the fuel flow path 7e. As a result, the annular portion 33 may be deformed and the annular portion 33 may be loosened.
According to the above configuration, the metal frame 35 made of a metal material having a rigidity higher than that of the resin material presses the annular portion 33 from the inner peripheral portion 33a side toward the fuel flow path 7e. As a result, the annular portion 33 can be reliably fixed to the fuel flow path 7e.
（第２実施形態）
　次に、図４に基づいて本発明の第２実施形態を説明する。なお、第２実施形態の構成のうち、第１実施形態と同様の構成については、同一の符号を付しその説明を省略する。
　図４は、燃料供給装置１の断面図である。
　第２実施形態では、図４に示すように、フィルタ３０が燃料の流通方向において吐出ポート１１ａの直下に設けられている点で、上述した第１実施形態と相異している。 (Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. Of the configurations of the second embodiment, the same configurations as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
FIG. 4 is a cross-sectional view of the fuel supply device 1.
The second embodiment is different from the first embodiment described above in that, as shown in FIG. 4, the filter 30 is provided directly below the discharge port 11a in the fuel distribution direction.
　フィルタ３０は、燃料の流通方向において吐出ポート１１ａの直下に設けられている。これにより、燃料供給装置１を軸方向Ｄ１に縮小させ、小型化することができる。 The filter 30 is provided directly below the discharge port 11a in the fuel distribution direction. As a result, the fuel supply device 1 can be reduced in the axial direction D1 and downsized.
　以上、本発明の好ましい実施形態を説明したが、本発明はこれら実施形態に限定されることはない。本発明の趣旨を逸脱しない範囲で、構成の付加、省略、置換、及びその他の変更が自在である。本発明は前述した説明によって限定されることはなく、添付の特許請求の範囲によってのみ限定される。 Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. The configuration may be added, omitted, replaced, and other changes may be freely made without departing from the spirit of the present invention. The present invention is not limited by the above description, but only by the appended claims.
　なお、上述の実施形態では、ポンプ部３ａは、例えばインペラ１６を有する非容積型のポンプとしたが、これに限られない。ポンプ部３ａは、燃料を汲み上げて圧送できればよい。 In the above-described embodiment, the pump unit 3a is, for example, a non-volumetric pump having an impeller 16, but the present invention is not limited to this. The pump unit 3a may pump fuel and pump it.
　上述の実施形態では、フィルタ３０がプレッシャレギュレータ６の直近に設けられている（第１実施形態）、またはフィルタ３０が燃料の流通方向において吐出ポート１１ａの直下に設けられている（第２実施形態）、としたが、これに限られない。フィルタ３０は、燃料流路７ｅの吐出ポート１１ａとプレッシャレギュレータ６との間に配置されていればよい。 In the above-described embodiment, the filter 30 is provided in the immediate vicinity of the pressure regulator 6 (first embodiment), or the filter 30 is provided directly below the discharge port 11a in the fuel flow direction (second embodiment). ), But it is not limited to this. The filter 30 may be arranged between the discharge port 11a of the fuel flow path 7e and the pressure regulator 6.
　上述の実施形態では、フィルタ３０は、環状部３３が下側、側面部３４が上側となるように配置されているが、これに限られない。フィルタ３０は、燃料をろ過できればよい。フィルタ３０は、環状部３３が上側、側面部３４が下側となるように配置されてもよい。 In the above-described embodiment, the filter 30 is arranged so that the annular portion 33 is on the lower side and the side surface portion 34 is on the upper side, but the present invention is not limited to this. The filter 30 may be able to filter the fuel. The filter 30 may be arranged so that the annular portion 33 is on the upper side and the side surface portion 34 is on the lower side.
　上述の実施形態では、フィルタ３０は、枠体３１の環状部３３が圧入されて燃料流路７ｅに固定されているとしたが、これに限られない。フィルタ３０は、枠体３１の環状部３３が軸方向Ｄ１から見て環状となるように配置されていればよい。ただし、環状部３３が圧入されている場合は、環状部３３と燃料流路７ｅとの隙間をなくすことができるので、フィルタ３０を通過する全ての燃料をろ過できるという点で優位性がある。 In the above-described embodiment, the filter 30 is not limited to the case where the annular portion 33 of the frame body 31 is press-fitted and fixed to the fuel flow path 7e. The filter 30 may be arranged so that the annular portion 33 of the frame body 31 is annular when viewed from the axial direction D1. However, when the annular portion 33 is press-fitted, the gap between the annular portion 33 and the fuel flow path 7e can be eliminated, so that there is an advantage in that all the fuel passing through the filter 30 can be filtered.
　上述の実施形態では、フィルタ３０の枠体３１は、円錐形状に形成されているとしたが、これに限られない。枠体３１は、フィルタ３０がろ過機能を満足できる形状であればよい。例えば、枠体３１は、環状部３３のみから構成されていてもよい。すなわち、枠体３１は、環状に形成されていてもよい。 In the above-described embodiment, the frame 31 of the filter 30 is formed in a conical shape, but the present invention is not limited to this. The frame 31 may have a shape that allows the filter 30 to satisfy the filtration function. For example, the frame body 31 may be composed of only the annular portion 33. That is, the frame body 31 may be formed in an annular shape.
　上述の実施形態では、フィルタ３０の枠体３１は、樹脂材料により形成されているとしたが、これに限られない。枠体３１は、燃料流路７ｅ内に圧入するために弾性変形可能な材料で形成されていればよい。例えば、枠体３１は、金属材料により形成されていてもよい。 In the above-described embodiment, the frame 31 of the filter 30 is made of a resin material, but the present invention is not limited to this. The frame 31 may be made of an elastically deformable material for press fitting into the fuel flow path 7e. For example, the frame 31 may be made of a metal material.
　上述の実施形態では、枠体３１の軸方向Ｄ１の長さは、例えば２０μｍから３０μｍであるとしたが、これに限られない。枠体３１は、燃料流路７ｅに配置できる程度の大きさであればよい。 In the above-described embodiment, the length of the frame 31 in the axial direction D1 is, for example, 20 μm to 30 μm, but the length is not limited to this. The frame 31 may be large enough to be arranged in the fuel flow path 7e.
　上述の実施形態では、枠体３１の環状部３３は、内周部３３ａに金属枠３５を有しているとしたが、これに限られない。環状部３３は、燃料流路７ｅに圧入できればよく、内周部３３ａに金属枠３５を有していなくてもよい。 In the above-described embodiment, the annular portion 33 of the frame body 31 has a metal frame 35 on the inner peripheral portion 33a, but the present invention is not limited to this. The annular portion 33 may be press-fitted into the fuel flow path 7e, and may not have the metal frame 35 on the inner peripheral portion 33a.
　上述の実施形態では、金属枠３５と、環状部３３の樹脂材料により形成された部分とは、軸方向Ｄ１の長さが同一であるとしたが、これに限られない。金属枠３５は、環状部３３の内周部３３ａに設けられていればよい。金属枠３５と、環状部３３の樹脂材料により形成された部分とは、軸方向Ｄ１の長さが同一でなくてもよい。 In the above-described embodiment, the metal frame 35 and the portion formed by the resin material of the annular portion 33 have the same length in the axial direction D1, but the length is not limited to this. The metal frame 35 may be provided on the inner peripheral portion 33a of the annular portion 33. The length of the metal frame 35 and the portion of the annular portion 33 formed of the resin material do not have to be the same in the axial direction D1.
　上述の実施形態では、金属枠３５は、環状部３３の軸方向Ｄ１の両端で露出しているとしたが、これに限られない。金属枠３５は、環状部３３の内周部３３ａに設けられていればよい。金属枠３５は、露出していなくてもよい。また、金属枠３５は、環状部３３の軸方向Ｄ１の下端でのみ露出していてもよい。また、金属枠３５は、環状部３３の径方向Ｄ２の内側で露出していてもよい。 In the above-described embodiment, the metal frame 35 is exposed at both ends of the annular portion 33 in the axial direction D1, but the present invention is not limited to this. The metal frame 35 may be provided on the inner peripheral portion 33a of the annular portion 33. The metal frame 35 does not have to be exposed. Further, the metal frame 35 may be exposed only at the lower end of the annular portion 33 in the axial direction D1. Further, the metal frame 35 may be exposed inside the radial direction D2 of the annular portion 33.
　上述の実施形態では、フィルタ本体３２は、環状端部３４ａの内側と、環状部３３と環状端部３４ａとの間と、に張り付けられているとしたが、これに限られない。フィルタ本体３２は、燃料をろ過できるように張り付けられていればよい。フィルタ本体３２は、環状部３３の内側にも張り付けられていてもよい。 In the above-described embodiment, the filter main body 32 is attached to the inside of the annular end portion 34a and between the annular portion 33 and the annular end portion 34a, but the present invention is not limited to this. The filter body 32 may be attached so that the fuel can be filtered. The filter body 32 may also be attached to the inside of the annular portion 33.
　その他、本発明の趣旨を逸脱しない範囲で、上述した実施形態における構成要素を周知の構成要素に置き換えることは適宜自在であり、また、上述した各変形例を適宜組み合わせても構わない。 In addition, as long as the gist of the present invention is not deviated, the constituent elements in the above-described embodiments can be replaced with well-known constituent elements as appropriate, and the above-described modified examples may be appropriately combined.
１…燃料供給装置、３…燃料ポンプ、４…ホルダ部、６…プレッシャレギュレータ、７ｅ…燃料流路、７ｆ…燃料取出流路、７ｇ…リターン流路、１１ａ…吐出ポート、３０…フィルタ、３１…枠体、３２…フィルタ本体、３３…環状部、３３ａ…内周部、３４…側面部、３５…金属枠、Ｄ１…軸方向
 
  1 ... Fuel supply device, 3 ... Fuel pump, 4 ... Holder, 6 ... Pressure regulator, 7e ... Fuel flow path, 7f ... Fuel take-out flow path, 7g ... Return flow path, 11a ... Discharge port, 30 ... Filter, 31 ... frame body, 32 ... filter body, 33 ... annular portion, 33a ... inner peripheral portion, 34 ... side surface portion, 35 ... metal frame, D1 ... axial direction

Claims (7)

  1. 　燃料を汲み上げ、汲み上げられた前記燃料を吐出する吐出ポートを有し、前記吐出ポートを介して内燃機関へと前記燃料を圧送する燃料ポンプと、
    　前記吐出ポートに燃料流路を介して連通され、前記吐出ポートから吐出された前記燃料の燃圧を一定の値に抑えるプレッシャレギュレータと、
    　前記燃料流路の前記吐出ポートと前記プレッシャレギュレータとの間に配置され、前記燃料をろ過するフィルタと、
    　を備えることを特徴とする燃料供給装置。     A fuel pump having a discharge port for pumping fuel and discharging the pumped fuel, and pumping the fuel to an internal combustion engine via the discharge port.
    A pressure regulator that communicates with the discharge port via the fuel flow path and suppresses the fuel pressure of the fuel discharged from the discharge port to a constant value.
    A filter arranged between the discharge port of the fuel flow path and the pressure regulator to filter the fuel,
    A fuel supply device characterized by being provided with.
  2. 　前記燃料流路は、
    　前記吐出ポートと前記内燃機関とを連通させる燃料取出流路と、
    　前記燃料取出流路から前記内燃機関とは反対側に分岐し、前記吐出ポートと前記プレッシャレギュレータとを連通させるリターン流路と、を有し、
    　前記フィルタは、前記リターン流路に配置されることを特徴とする請求項１に記載の燃料供給装置。     The fuel flow path is
    A fuel take-out flow path that connects the discharge port and the internal combustion engine,
    It has a return flow path that branches from the fuel take-out flow path to the side opposite to the internal combustion engine and communicates the discharge port and the pressure regulator.
    The fuel supply device according to claim 1, wherein the filter is arranged in the return flow path.
  3. 　前記燃料ポンプを内部に収容するホルダ部を備え、
    　前記ホルダ部は、前記燃料流路を有することを特徴とする請求項１または請求項２に記載の燃料供給装置。     A holder portion for accommodating the fuel pump is provided.
    The fuel supply device according to claim 1 or 2, wherein the holder portion has the fuel flow path.
  4. 　前記フィルタは、
    　　円錐形状の枠体と、
    　　前記枠体に張り付けられたメッシュ状のフィルタ本体と、を備え、
    　前記枠体は、
    　　前記燃料流路における前記フィルタが配置された箇所の軸方向から見て環状に形成されている環状部と、
    　　前記環状部から、前記軸方向に沿って延び、前記環状部から離間するにしたがって先細りに形成されている側面部と、を有し、
    　前記フィルタ本体は、前記側面部に張り付けられていることを特徴とする請求項３に記載の燃料供給装置。     The filter
    With a conical frame
    A mesh-shaped filter body attached to the frame body is provided.
    The frame is
    An annular portion formed in an annular shape when viewed from the axial direction of the portion where the filter is arranged in the fuel flow path, and an annular portion.
    It has a side surface portion extending from the annular portion along the axial direction and tapered away from the annular portion.
    The fuel supply device according to claim 3, wherein the filter main body is attached to the side surface portion.
  5. 　前記ホルダ部と前記枠体とは、樹脂材料により形成されていることを特徴とする請求項４に記載の燃料供給装置。 The fuel supply device according to claim 4, wherein the holder portion and the frame body are formed of a resin material.
  6. 　前記環状部は、内周部に金属枠を有することを特徴とする請求項４または請求項５に記載の燃料供給装置。 The fuel supply device according to claim 4 or 5, wherein the annular portion has a metal frame on the inner peripheral portion.
  7. 　前記フィルタは、前記燃料の流通方向において前記吐出ポートの直下に設けられていることを特徴とする請求項４から請求項６のいずれか１項に記載の燃料供給装置。
     
          The fuel supply device according to any one of claims 4 to 6, wherein the filter is provided directly below the discharge port in the fuel distribution direction.
PCT/JP2021/016846 2020-04-30 2021-04-27 Fuel supply device WO2021221072A1 (en)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2004232495A (en) * 2003-01-28 2004-08-19 Mikuni Corp Fuel supply system
JP2007291863A (en) * 2006-04-21 2007-11-08 Keihin Corp Fuel supply module
JP2017210899A (en) * 2016-05-24 2017-11-30 愛三工業株式会社 Fuel passage structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4840342B2 (en) * 2007-11-30 2011-12-21 三菱電機株式会社 Vehicle fuel supply system
JP5818433B2 (en) * 2010-12-24 2015-11-18 株式会社ミツバ Fuel supply device
JP2013096254A (en) 2011-10-28 2013-05-20 Keihin Corp Fuel supply unit
JP6487750B2 (en) * 2015-03-31 2019-03-20 株式会社ケーヒン Fuel supply device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004232495A (en) * 2003-01-28 2004-08-19 Mikuni Corp Fuel supply system
JP2007291863A (en) * 2006-04-21 2007-11-08 Keihin Corp Fuel supply module
JP2017210899A (en) * 2016-05-24 2017-11-30 愛三工業株式会社 Fuel passage structure

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