WO2012086634A1 - Fuel supply device - Google Patents
Fuel supply device Download PDFInfo
- Publication number
- WO2012086634A1 WO2012086634A1 PCT/JP2011/079483 JP2011079483W WO2012086634A1 WO 2012086634 A1 WO2012086634 A1 WO 2012086634A1 JP 2011079483 W JP2011079483 W JP 2011079483W WO 2012086634 A1 WO2012086634 A1 WO 2012086634A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- pump
- case
- unit
- flange
- Prior art date
Links
Images
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
- F02M37/04—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
- F02M37/103—Mounting pumps on fuel tanks
-
- 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
- F02M37/50—Filters arranged in or on fuel tanks
Definitions
- This invention relates to a fuel supply apparatus.
- This application claims priority based on Japanese Patent Application No. 2010-288664 filed in Japan on December 24, 2010, the contents of which are incorporated herein by reference.
- a so-called in-tank type fuel supply device in which a fuel pump is disposed in a fuel tank is used as a fuel supply device for a motorcycle or a four-wheeled vehicle.
- a configuration is known in which a pump assembly (corresponding to the “fuel pump” of the present application) is accommodated in a flange unit, and an upper cup is mounted thereon (see, for example, Patent Document 1).
- an electric motor, a pump unit, a pressure regulator, and a check valve are integrally housed in a steel shell case (corresponding to the “housing case” of the present application).
- An inlet cover (corresponding to the “pump case” of the present application) is caulked and fixed to one end side of the cylindrical housing case.
- the bottom of the flange unit forms a reservoir for storing fuel.
- Positioning protrusions are provided in a state where they are raised from the reservoir portion toward the fuel pump.
- the positioning projection and one end side of the pump case are brought into contact with each other, and the upper cup is mounted from the other end side of the housing case, whereby the fuel pump is supported by the flange unit and the upper cup (Patent Document 1). (See FIG. 1).
- an impeller connected to the rotating shaft of the electric motor is accommodated inside the pump case.
- the impeller comes into contact with the inner surface of the pump case, the sliding resistance increases and the efficiency of the fuel pump decreases. Therefore, it is necessary to maintain a constant clearance between the inner surface of the pump case and the impeller and prevent contact between the impeller and the inner surface of the pump case.
- the pump case receives a reaction force of the discharge pressure, and the pump portion is deformed.
- the vibration or impact load is directly transmitted from the positioning protrusion to the pump case.
- the pump case of patent document 1 is formed from the metal by the aluminum die-casting etc. so that it may not deform
- the present invention provides a low-cost fuel supply device that suppresses deformation of a pump case made of resin and contact between the impeller and the inner surface of the pump case, and prevents reduction in fuel pump efficiency due to increase in sliding resistance. To do.
- a fuel supply device includes a fuel pump that is disposed in a fuel tank, pumps up the fuel in the fuel tank, and pumps the fuel to an internal combustion engine, and the fuel A case that supports the pump and is attached to a wall surface of the fuel tank.
- the fuel pump further includes a motor unit, a pump unit provided at a lower portion of the motor unit, and a metal housing case formed so as to cover the motor unit and the periphery of the pump unit.
- the pump part has a pump case made of resin.
- a collar portion that contacts the pump case is formed inside the housing case. And the said fuel pump is supported by the said case via the said collar part.
- the fuel pump when the fuel pump is placed in the case, the fuel pump is supported by the case via the flange portion of the housing case. Therefore, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted to the resin pump case. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented. Further, by forming the pump case from resin, the pump case can be formed at a lower cost than when the pump case is formed from metal by, for example, aluminum die casting. Therefore, a low-cost fuel supply device can be provided.
- a pedestal portion that supports the pump case is provided in the case via the flange portion.
- the fuel supply device of the second aspect of the present invention when the fuel pump is placed in the case, the base portion of the case comes into contact with the flange portion of the housing case. Therefore, the pedestal portion does not directly contact the pump case, and the fuel pump can be supported via the flange portion. As a result, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted from the pedestal portion to the pump case. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be reliably suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be effectively prevented.
- the fuel supply device is formed so as to support the pump case via the root portion of the flange portion. Since the base part of the collar part is supported by the lower end part of the housing case, it has higher strength than the tip part of the collar part.
- the pedestal portion supports the pump case via the root portion of the flange portion having strength. Therefore, deformation of the collar portion can be suppressed. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented.
- a seal member is provided between the pump case and the flange portion.
- the fuel supply device of the fourth aspect of the present invention even when an external force such as a reaction force of the discharge pressure is generated, the external force is absorbed by the seal member provided between the pump case and the flange portion. be able to. Therefore, the external force transmitted to the pump case can be reduced. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented. Furthermore, stable fuel pump performance can be maintained over a long period of time.
- the flange portion constitutes an inner flange portion formed at a lower end portion of the housing case.
- the collar portion can be formed firmly, deformation of the collar portion can be suppressed. Therefore, the deformation of the pump case formed of resin and the contact between the impeller and the inner surface of the pump case can be reliably suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented.
- the motor unit and the pump unit can be reliably integrated. Furthermore, since the sealing member, the pump case, and the collar portion are in close contact with each other, the sealing performance can be improved.
- the fuel supply apparatus which concerns on the 6th aspect of this invention is attached to the bottom wall of the said fuel tank, and the said fuel pump is mounted on the said base part currently formed in the said case.
- the above-described structure can be applied to the fuel supply device attached to the bottom wall of the fuel tank.
- the above-described structure can be suitably used particularly for a so-called submerged type fuel supply apparatus in which a flange unit is provided below the fuel pump.
- the fuel pump when the fuel pump is placed in the case, the fuel pump is supported by the case via the flange portion of the housing case. Therefore, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted to the resin pump case. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented. Further, by forming the pump case from resin, the pump case can be formed at a lower cost than when the pump case is formed from metal by, for example, aluminum die casting. Therefore, a low-cost fuel supply device can be provided.
- FIG. 1 is a perspective view of a fuel supply device according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line AA in FIG.
- FIG. 3 is an enlarged view of a region B in FIG. 2.
- It is a perspective view of the flange unit of a 1st embodiment of the present invention.
- It is a perspective view of the fuel supply apparatus of 2nd Embodiment of this invention.
- FIG. 6 is a cross-sectional view taken along the line CC in FIG. 5. It is an enlarged view of the area
- the in-tank type fuel supply apparatus includes an upper type in which the fuel pump is attached to the upper part of the fuel tank and a lower type in which the fuel pump is attached to the bottom of the fuel tank.
- the subscript type is described as an example. Further, the relative position in the axial direction of the fuel pump is simply expressed as the upper side and the lower side.
- the fuel supply device 1 is inserted from an opening 2 a formed in the bottom wall 2 b (see FIG. 2) of the fuel tank 2 and attached to the bottom wall 2 b of the fuel tank 2.
- the fuel supply device 1 includes a fuel pump 3 disposed in the fuel tank 2, an upper cup 25 that is externally inserted into the fuel pump 3, and a flange unit that is attached to the bottom wall 2 b of the fuel tank 2 and supports the fuel pump 3. 4 (“case”).
- the fuel pump 3 is formed in a substantially cylindrical shape, and includes a motor unit 30 disposed on the upper side of the fuel pump 3 and a pump unit 40 disposed on the lower side of the fuel pump 3.
- a motor unit 30 for example, a DC motor 30a with a brush (not shown) is used.
- An output shaft 30b is disposed at the center of the motor unit 30, and is pivotally supported by the upper side of the motor unit 30 and the lower side of the pump unit 40. Note that a D-cut surface (not shown) for position regulation is formed on the pump portion 40 side of the output shaft 30b as will be described later.
- a pair of motor terminals 32 that are electrically joined to the brush are provided on the upper side of the motor unit 30 in a state of standing along the central axis O on the upper side of the fuel pump 3.
- the harness 6 is connected to the pair of motor terminals 32.
- the external power source and the motor unit 30 are electrically connected by the harness 6, and power for driving the DC motor 30a is supplied from the external power source.
- the motor terminal 32 and the periphery of the brush on the upper side of the motor unit 30 are slightly reduced in diameter than other parts of the motor unit 30 to form a stepped part 30c. An upper end of a housing case 20 described later is crimped to the stepped portion 30c.
- a discharge port 31 for discharging fuel and a check valve 74 communicating with the discharge port 31 are provided above the motor unit 30.
- the discharge port 31 and the check valve 74 are connected to a fuel flow path unit 52 described later and communicate with the fuel flow path unit.
- the check valve 74 is a member for preventing the fuel discharged from the discharge port 31 from flowing backward from the fuel flow path unit 52 into the fuel pump 3.
- a non-volumetric pump having an impeller 47 is used for the pump unit 40.
- the pump unit 40 includes an impeller 47 and a pump case 45 formed so as to cover the entire impeller 47.
- the impeller 47 is a member formed in a substantially disc shape made of resin.
- An insertion hole 47 c is formed in the approximate center of the impeller 47.
- the output shaft 30b of the DC motor 30a is inserted through the insertion hole 47c.
- a D-cut surface is formed on the insertion hole 47c of the impeller 47 and the impeller 47 side of the output shaft 30b.
- the output shaft 30b is inserted into the insertion hole 47c of the impeller 47 while aligning the insertion hole 47c and the D cut surface of the output shaft 30b.
- a plurality of blade portions are formed on the outer peripheral side of the upper surface and the lower surface of the impeller 47. Between the plurality of blade portions, the lower surface and the upper surface of the impeller 47 are penetrated. Further, a fuel flow path hole (not shown) that penetrates the lower surface and the upper surface of the impeller 47 is formed between the insertion hole 47 c and the blade portion in the radial direction of the impeller 47.
- the pump case 45 that covers the entire impeller 47 includes a lower case 42, an upper case 43, and a middle case 44.
- the pump case 45 is formed so as to cover the entire impeller 47 by sandwiching the middle case 44 in which the impeller 47 is disposed on the inner side between the lower case 42 and the upper case 43.
- the lower case 42, the upper case 43, and the middle case 44 are arranged in order of the lower case 42, the middle case 44, and the upper case 43 from the lower side to the upper side along the central axis O.
- Each of the lower case 42, the upper case 43, and the middle case 44 is made of a resin having oil resistance, and is formed by, for example, injection molding.
- the lower case 42 is a substantially disk-shaped member having substantially the same outer diameter as the motor unit 30.
- a shaft support portion 42c that supports the output shaft 30b of the DC motor 30a is formed at substantially the center of the lower case 42.
- the shaft support 42c is a hole having a bottom, and a thrust plate (not shown) is disposed on the bottom. The thrust plate receives the load in the axial direction of the output shaft 30b and reduces the sliding resistance of the output shaft 30b.
- a fuel suction port 41 protruding downward is formed on the outer diameter side of the lower surface 42b of the lower case 42.
- the fuel inlet 41 is formed in a substantially cylindrical shape.
- the inside of the fuel inlet 41 constitutes a fuel passage, and the outer side of the fuel inlet 41 is fitted to a flange unit 4 described later. Therefore, the fuel suction port 41 communicates with a filter unit (not shown) provided separately from the filter discharge pipe 51 formed in the flange unit 4 and the fuel supply device 1.
- a stepped portion 48 is formed at the edge of the lower surface 42b of the lower case 42.
- the stepped portion 48 is formed by reducing the diameter of the lower surface 42 b side of the lower case 42.
- a square ring 46 as a sealing member is attached to the stepped portion 48 so as to be in contact with the bottom 48 a of the stepped portion 48. The corner ring 46 will be described later.
- a substantially C-shaped groove (not shown) is formed on the upper surface 42a of the lower case 42 when viewed in the axial direction.
- a fuel channel hole (not shown) that penetrates the lower surface 42b and the upper surface 42a of the lower case 42 is formed on one end side of the groove portion. The fuel passage hole communicates with the fuel suction port 41, and the fuel sucked from the fuel suction port 41 passes through.
- the upper case 43 is a substantially disk-like member having substantially the same outer diameter as that of the motor unit 30, similarly to the lower case 42.
- An insertion hole 43 c is formed in the approximate center of the upper case 43.
- the output shaft 30b of the DC motor 30a is inserted through the insertion hole 43c.
- a fuel flow path hole (not shown) that penetrates the lower surface 43b and the upper surface 43a of the upper case 43 is formed on the outer peripheral side of the insertion hole 43c.
- the fuel passage hole communicates with the motor unit 30 and the fuel pumped from the impeller 47 passes through.
- the middle case 44 is a substantially ring-shaped member having substantially the same outer diameter as the motor unit 30.
- the impeller 47 is arranged inside the middle case 44 so that the central axis of the middle case 44 and the central axis of the impeller 47 coincide.
- the inner diameter of the middle case 44 is formed to be slightly larger than the outer diameter of the impeller 47.
- a clearance C1 (see FIG. 3) is formed between the inner surface 44a of the middle case 44 (that is, the inner surface 44a of the pump case) and the outer peripheral surface of the impeller 47.
- the efficiency of the fuel pump 3 depends on the clearance between the pump case 45 and the impeller 47. Therefore, the clearance C1 is set to a predetermined value according to the required efficiency of the fuel pump 3.
- the middle case 44 is disposed between the upper case 43 and the lower case 42.
- the thickness of the middle case 44 in the axial direction is substantially the same as the thickness of the impeller 47 described above or slightly thicker than the thickness of the impeller 47. That is, the middle case 44 serves as a spacer that prevents contact between the upper surface 47 a of the impeller 47 and the lower surface 43 b of the upper case 43 and between the lower surface 47 b of the impeller 47 and the upper surface 42 a of the lower case 42.
- a clearance C2 (see FIG. 3) is formed between the upper surface 47a of the impeller 47 and the lower surface 43b of the upper case 43.
- a clearance C3 (see FIG. 3) is formed between the lower surface 47b of the impeller 47 and the upper surface 42a of the lower case 42.
- the clearances C2 and C3 are set to predetermined values according to the required efficiency of the fuel pump 3 in the same manner as the clearance C1 described above.
- the housing case 20 is a substantially cylindrical member made of iron or the like, and is formed by cutting a seamless tube, for example.
- the upper end portion of the housing case 20 constitutes a crimping portion 22 and is crimped to a step portion 30 c formed in the motor portion 30.
- the housing case 20 has a flange portion 21 that bends and extends inward from the lower end portion of the housing case 20.
- the flange portion 21 is an inner flange portion, which is formed by cutting the seamless tube to form the main body of the housing case 20, and then, for example, subjected to bending processing by a press or the like at the lower end portion of the housing case 20.
- the flange 21 is formed integrally with the housing case.
- the base portion 21 b of the flange portion 21 is connected to the end portion of the housing case 20.
- the inner diameter of the distal end portion 21 a of the flange portion 21 is slightly larger than the outer diameter of the side portion 48 b of the stepped portion 48 formed in the lower case 42. Therefore, the side portion 48b of the lower case 42 is disposed on the inner diameter side of the distal end portion 21a in the flange portion 21.
- a square ring 46 is provided between the stepped portion 48 of the pump case 45 and the flange portion 21 of the housing case 20.
- the square ring 46 is a member made of a material excellent in oil resistance such as a fluoro rubber having a substantially rectangular cross section.
- the axial thickness of the square ring 46 is set to be lower than the axial height of the stepped portion 48 formed in the pump case 45.
- the upper cup 25 that is externally inserted into the fuel pump 3 is a cylindrical member that has a bottom and is formed of a resin having excellent oil resistance, and is formed by, for example, injection molding or the like.
- a mounting portion 61 for the liquid level detector 60 is formed on the upper cup 25.
- the attachment portion 61 is a plate-like member formed to extend outward in the radial direction.
- the attachment portion 61 is molded by injection at the same time as the upper cup 25 is formed.
- the liquid level detector 60 is fixed to the mounting portion 61 by a snap fit or the like.
- the upper cup 25 has a cylindrical portion 24 that is externally inserted into the fuel pump 3.
- the cylindrical portion 24 includes a large diameter portion 26 disposed on the lower side and a small diameter portion 27 disposed on the upper side.
- an engagement convex portion 25 a is formed at a position corresponding to the engagement hole of the engagement piece 15 a provided in the flange unit 4.
- the engaging projections 25a of the upper cup 25 and the engaging pieces 15a of the flange unit 4 are snap-fit, and the upper cup 25 and the flange unit 4 are integrated.
- a fuel flow path unit 52 through which the fuel discharged from the fuel pump 3 passes is provided inside the cylindrical portion 24 of the upper cup 25.
- the fuel flow path unit 52 has a substantially L-shaped cross section, and is provided from the upper end surface of the small diameter portion 27 of the cylindrical portion 24 to the outer peripheral surface of the cylindrical portion 24.
- a pressure regulator 76 is provided on the inner side of the small diameter portion 27 of the upper cup 25 on the side opposite to the check valve 74 with the central axis O interposed therebetween.
- the pressure regulator 76 is a member for keeping the fuel pressure in the fuel flow path unit 52 constant.
- the pressure regulator 76 discharges the fuel in the fuel flow path unit 52 to the reservoir portion 11 when excessive fuel pressure is generated in the fuel flow path unit 52.
- the fuel supply device 1 is disposed below the fuel pump 3 and includes a flange unit 4 attached to the bottom wall 2 b of the fuel tank 2.
- the flange unit 4 is a member made of a resin having excellent oil resistance, and is formed by, for example, injection molding.
- the flange unit 4 includes a substantially disc-shaped flange portion 12, an engaging portion 15 formed on the upper side of the flange portion 12, and a unit main body 10 formed on the lower side of the flange portion 12.
- An annular portion 13 is formed in the flange portion 12 at a portion corresponding to the opening 2 a of the fuel tank 2.
- an engaging portion 15 that engages with an engaging convex portion 25a formed on an upper cup 25 described later is provided.
- the engaging portion 15 is formed in a substantially circular shape when viewed from the axial direction.
- a plurality of engaging pieces 15 a that protrude upward are formed (four in this embodiment).
- the engagement piece 15a is formed so as to be elastically deformable in the direction in which the distal end side expands in diameter. Further, the engagement piece 15a is formed with an engagement hole that can be engaged with the engagement convex portion 25a formed in the upper cup 25.
- the flange unit 4 and the upper cup 25 are fixed by snap-fitting the engaging portion 15 to the upper cup 25.
- the unit body 10 is formed in a cylindrical shape having a bottom, and is externally inserted into the fuel pump 3 from the lower side of the fuel pump 3.
- the inner peripheral surface 10 a of the unit body 10 is set to have a larger diameter than the outer diameter of the fuel pump 3.
- a clearance is formed between the inner peripheral surface 10 a of the unit body 10 and the outer peripheral surface of the fuel pump 3. This clearance forms a fuel return flow path that allows the pressure regulator 76 and the reservoir portion 11 to communicate with each other.
- a connector 14 is formed integrally with the unit body 10.
- the connector 14 is a cylindrical member having a bottom and has a connector fitting surface that opens radially outward.
- a connector terminal 34 is provided inside the connector 14.
- One end side 34 a of the connector terminal 34 protrudes inside the connector 14.
- An external connector (not shown) electrically connected to an external power source (not shown) is connected to one end side 34a of the connector terminal 34.
- the other end side 34 b of the connector terminal 34 protrudes above the flange portion 12.
- the harness 6 is connected to the other end side 34 b of the connector terminal 34, and power is supplied from the external power source to the motor unit 30 and the liquid level detector 60.
- a space is formed by the inner peripheral surface 10a and the bottom surface 10b of the unit body 10. This space functions as a reservoir portion 11 in which fuel is stored. Further, on the outside of the unit main body 10, a filter introduction pipe, a filter discharge pipe 51, and a fuel extraction pipe 57 (not shown) that communicate with the reservoir portion 11 and constitute a fuel flow path are formed.
- the filter introduction pipe and the filter discharge pipe 51 communicate with a filter unit (not shown) provided separately from the fuel supply device 1.
- the fuel stored in the reservoir 11 is introduced into the filter unit through the filter introduction pipe, filtered, and then discharged. Thereafter, the fuel pump 3 pumps fuel from the fuel suction port 41 of the pump unit 40 through the filter discharge pipe 51.
- the fuel passes through the pump case 45 and is pumped to the upper side of the motor unit 30. After passing through the fuel flow path unit 52, the fuel is transferred to the internal combustion engine (not shown) through the fuel extraction pipe 57.
- a pedestal 65 is formed inside the unit body 10.
- the pedestal portion 65 is formed by reducing the diameter of the lower side of the inner peripheral surface 10a of the unit body 10.
- the reservoir portion 11 is formed by reducing the diameter of the lower side of the inner peripheral surface 10 a of the unit body 10.
- the reservoir portion 11 forms a pedestal portion 65.
- the inner diameter of the pedestal portion 65 is set so as to be larger than the inner diameter of the distal end portion 21 a of the flange portion 21 and smaller than the outer diameter of the housing case 20.
- the inner diameter of the pedestal portion 65 is set as described above, and the fuel pump 3 is placed on the flange unit 4 with the upper surface 65a of the pedestal portion 65 and the root portion 21b of the flange portion 21 in contact with each other.
- the flange portion 21 is formed by bending the lower end portion of the housing case 20, so that the root portion 21 b of the flange portion 21 is connected to the end portion of the housing case 20.
- the base part 21b of the collar part 21 has higher strength than the tip part 21a of the collar part 21. Therefore, it is desirable to bring the upper surface 65a of the pedestal portion 65 into contact with the root portion 21b of the flange portion 21 as described above.
- the pump case 45 can be formed at a lower cost than when the pump case 45 is formed with metal by, for example, aluminum die casting. Therefore, the low-cost fuel supply device 1 can be provided.
- the pedestal portion 65 of the flange unit 4 abuts on the flange portion 21 of the housing case 20. Therefore, the fuel pump 3 can be supported via the flange portion 21 without the pedestal portion 65 directly contacting the pump case 45. Thereby, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted from the pedestal portion 65 to the pump case 45. As a result, the deformation of the pump case 45 is suppressed, and the clearances C1, C2, and C3 between the impeller 47 and the pump case 45 can be held.
- the pedestal portion 65 supports the pump case 45 via the root portion 21b of the flange portion 21 having strength, so that deformation of the flange portion 21 is suppressed. be able to. Therefore, deformation of the pump case 45 made of resin and contact between the impeller 47 and the inner surface 44a of the pump case 45 can be suppressed, and a reduction in efficiency of the fuel pump 3 due to an increase in sliding resistance can be prevented.
- the present embodiment even when an external force such as a reaction force of the discharge pressure is generated, the external force is absorbed by the square ring 46 (seal member) provided between the pump case 45 and the flange portion 21. be able to. Therefore, the external force transmitted to the pump case 45 can be reduced. Therefore, deformation of the pump case 45 made of resin and contact between the impeller 47 and the inner surface 44a of the pump case 45 can be suppressed, and a reduction in efficiency of the fuel pump 3 due to an increase in sliding resistance can be prevented. Furthermore, stable performance of the fuel pump 3 can be maintained over a long period of time.
- the collar part 21 can be formed firmly, a deformation
- the above-described structure is applied to the fuel supply device 1 attached to the bottom wall 2b of the fuel tank 2.
- the fuel pump 3 can be suitably used for a so-called under-installation type fuel supply apparatus 1 in which a flange unit 4 is provided on the lower side. Therefore, in the fuel supply device 1 fixed to the lower side of the fuel tank 2, the deformation of the pump case 45 made of resin and the contact between the impeller 47 and the inner surface 44a of the pump case 45 are reliably suppressed, and the sliding resistance It is possible to prevent a decrease in the efficiency of the fuel pump 3 due to an increase in.
- the fuel supply device 1 is inserted into an opening 2a formed in the upper wall 2c (see FIG. 6) of the fuel tank 2 and attached to the upper wall 2c of the fuel tank 2. .
- the fuel supply apparatus 1 includes a fuel pump 3 disposed in the fuel tank 2, a lower cup 100 (“case”) that is externally attached to the fuel pump 3 and supports the fuel pump 3, and an upper wall 2 c of the fuel tank 2. And a flange unit 4 to be attached.
- the fuel supply device 1 is disposed on the upper side of the fuel pump 3 and includes a flange unit 4 attached to the upper wall 2c of the fuel tank 2.
- An annular portion 13 is formed in the flange portion 12 at a portion corresponding to the opening 2 a of the fuel tank 2.
- An engaging portion 15 that engages with an engaging convex portion 25a formed on the lower cup 100 described later is provided below the flange portion 12.
- a plurality of engaging pieces 15 a projecting downward are formed on the periphery of the engaging portion 15.
- the flange unit 4 and the lower cup 100 are fixed by snap-fitting the engaging portion 15 to the lower cup 100.
- the unit main body 10 is formed in a cylindrical shape having a bottom, and is externally inserted into the fuel pump 3 from the lower side of the fuel pump 3.
- a fuel flow path unit 52 is formed inside the unit body 10. The fuel flow path unit 52 communicates with the pressure regulator 76, the check valve 74, and the fuel take-out pipe 57.
- the lower cup 100 that is externally attached to the lower side of the fuel pump 3 is a cylindrical member having a bottom formed of a resin having excellent oil resistance, and is formed by, for example, injection molding or the like.
- a mounting portion 61 of the liquid level detector 60 is formed on the radially outer side of the lower cup 100.
- the attachment portion 61 is a plate-like member formed to extend outward in the radial direction.
- the attachment portion 61 is molded by injection at the same time as the upper cup 25 is formed.
- a filter unit 90 is attached to the lower side of the lower cup 100.
- the filter unit 90 communicates with the fuel inlet 41 via the filter discharge pipe 51.
- the fuel in the fuel tank 2 is introduced into the fuel inlet 41 of the pump unit 40 through the filter unit 90 and the filter discharge pipe 51.
- the fuel passes through the pump case 45 and is pumped to the upper side of the motor unit 30. After passing through the fuel flow path unit 52, the fuel is transferred to the internal combustion engine (not shown) through the fuel extraction pipe 57.
- a pedestal 65 is formed inside the lower cup 100.
- the pedestal portion 65 is formed by reducing the diameter of the lower side of the inner peripheral surface 100 a of the lower cup 100.
- the above-described structure is applied to the fuel supply device 1 attached to the upper wall 2c of the fuel tank 2.
- the above-described structure can be suitably used for the so-called top-fitting type fuel supply apparatus 1 in which the flange unit 4 is provided above the fuel pump 3. Therefore, the fuel supply device 1 fixed to the upper side of the fuel tank 2 reliably suppresses deformation of the pump case 45 made of resin and contact between the impeller 47 and the inner surface 44a of the pump case 45, thereby reducing sliding resistance. A decrease in efficiency of the fuel pump 3 due to the increase can be prevented.
- the present invention is not limited to the embodiment described above.
- the reservoir portion 11 is formed by reducing the diameter of the lower side of the inner peripheral surface 10 a of the unit body 10, and the pedestal portion 65 is formed by the reservoir portion 11.
- the pedestal portion 65 may be formed by providing a reduced diameter portion of the inner peripheral surface 10 a separately from the reservoir portion 11.
- the first embodiment of the present invention is advantageous in that the base portion 65 is provided by effectively using the space of the flange unit 4.
- the flange portion 21 is formed by bending the lower end portion of the housing case 20 or the like.
- the collar may be connected to the end of the housing case 20 by welding or the like.
- the first embodiment of the present invention has an advantage in that the flange portion 21 is formed integrally with the housing case 20 so that the flange portion 21 can be formed at low cost and has excellent strength. is there.
- the first embodiment of the present invention employs a square ring 46 as a seal member disposed between the pump case 45 and the flange 21.
- the sealing member is not limited to the square ring 46, and may be an O-ring.
- a seal member may be disposed between the pump case 45 and the flange portion 21 by applying silicon or the like to the stepped portion 48 of the pump case 45.
- the deformation of the pump case formed of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented.
- the pump case can be formed at a low cost, and a low-cost fuel supply device can be provided.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
また、ポンプケースが樹脂で形成されることにより、例えば、アルミダイキャスト等によりポンプケースが金属で形成される場合よりも、低コストにポンプケースを形成することができる。したがって低コストな燃料供給装置を提供することができる。 According to the fuel supply device of the first aspect of the present invention, when the fuel pump is placed in the case, the fuel pump is supported by the case via the flange portion of the housing case. Therefore, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted to the resin pump case. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented.
Further, by forming the pump case from resin, the pump case can be formed at a lower cost than when the pump case is formed from metal by, for example, aluminum die casting. Therefore, a low-cost fuel supply device can be provided.
本発明の第二の態様に係る燃料供給装置によれば、ケース内に燃料ポンプを載置したとき、ケースの台座部がハウジングケースの鍔部に当接する。そのため、台座部がポンプケースに直接当接せず、鍔部を介して燃料ポンプを支持することができる。その結果、吐出圧の反力等の外力が発生しても、台座部からポンプケースに対して外力が直接伝達されない。したがって、樹脂により形成されたポンプケースの変形、およびインペラとポンプケースの内面との接触を確実に抑制し、摺動抵抗の増加による燃料ポンプの効率低下を効果的に防止することができる。 In the fuel supply apparatus according to the second aspect of the present invention, a pedestal portion that supports the pump case is provided in the case via the flange portion.
According to the fuel supply device of the second aspect of the present invention, when the fuel pump is placed in the case, the base portion of the case comes into contact with the flange portion of the housing case. Therefore, the pedestal portion does not directly contact the pump case, and the fuel pump can be supported via the flange portion. As a result, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted from the pedestal portion to the pump case. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be reliably suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be effectively prevented.
鍔部の根元部は、ハウジングケースの下方端部によって支持されているため、鍔部の先端部よりも強度を有している。本発明の第三の態様に係る燃料供給装置によれば、台座部は、強度を有する鍔部の根元部を介してポンプケースを支持している。そのため、鍔部の変形を抑制することができる。したがって、樹脂により形成されたポンプケースの変形、およびインペラとポンプケースの内面との接触を抑制し、摺動抵抗の増加による燃料ポンプの効率低下を防止することができる。 Moreover, the fuel supply device according to the third aspect of the present invention is formed so as to support the pump case via the root portion of the flange portion.
Since the base part of the collar part is supported by the lower end part of the housing case, it has higher strength than the tip part of the collar part. According to the fuel supply device according to the third aspect of the present invention, the pedestal portion supports the pump case via the root portion of the flange portion having strength. Therefore, deformation of the collar portion can be suppressed. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented.
本発明の第四の態様に係る燃料供給装置によれば、例えば吐出圧の反力等の外力が発生しても、ポンプケースと鍔部との間に設けたシール部材により、外力を吸収することができる。そのため、ポンプケースに伝達される外力を緩和することができる。したがって、樹脂により形成されたポンプケースの変形、およびインペラとポンプケースの内面との接触を抑制し、摺動抵抗の増加による燃料ポンプの効率低下を防止することができる。さらに、安定した燃料ポンプの性能を長期にわたって維持することができる。 In the fuel supply device according to the fourth aspect of the present invention, a seal member is provided between the pump case and the flange portion.
According to the fuel supply device of the fourth aspect of the present invention, even when an external force such as a reaction force of the discharge pressure is generated, the external force is absorbed by the seal member provided between the pump case and the flange portion. be able to. Therefore, the external force transmitted to the pump case can be reduced. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented. Furthermore, stable fuel pump performance can be maintained over a long period of time.
本発明の第五の態様に係る燃料供給装置によれば、鍔部を強固に形成することができるので、鍔部の変形を抑制することができる。したがって、樹脂により形成されたポンプケースの変形、およびインペラとポンプケースの内面との接触を確実に抑制し、摺動抵抗の増加による燃料ポンプの効率低下を防止することができる。また、モータ部とポンプ部とを確実に一体化することができる。さらに、シール部材と、ポンプケースおよび鍔部とが確実に密着するので、シール性を高めることができる。 In the fuel supply device according to the fifth aspect of the present invention, the flange portion constitutes an inner flange portion formed at a lower end portion of the housing case.
According to the fuel supply device according to the fifth aspect of the present invention, since the collar portion can be formed firmly, deformation of the collar portion can be suppressed. Therefore, the deformation of the pump case formed of resin and the contact between the impeller and the inner surface of the pump case can be reliably suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented. In addition, the motor unit and the pump unit can be reliably integrated. Furthermore, since the sealing member, the pump case, and the collar portion are in close contact with each other, the sealing performance can be improved.
本発明の第六の態様に係る燃料供給装置によれば、燃料タンクの底壁に取り付けられる燃料供給装置に、上述の構造を適用できる。上述の構造は、とりわけ燃料ポンプの下側にフランジユニットが設けられている、いわゆる下付けタイプの燃料供給装置に好適に用いることができる。したがって、燃料タンクの下側に固定される燃料供給装置で、樹脂により形成されたポンプケースの変形、およびインペラとポンプケースの内面との接触を確実に抑制し、摺動抵抗の増加による燃料ポンプの効率低下を防止することができる。 Moreover, the fuel supply apparatus which concerns on the 6th aspect of this invention is attached to the bottom wall of the said fuel tank, and the said fuel pump is mounted on the said base part currently formed in the said case.
According to the fuel supply device of the sixth aspect of the present invention, the above-described structure can be applied to the fuel supply device attached to the bottom wall of the fuel tank. The above-described structure can be suitably used particularly for a so-called submerged type fuel supply apparatus in which a flange unit is provided below the fuel pump. Therefore, in the fuel supply device fixed to the lower side of the fuel tank, the deformation of the pump case formed of resin and the contact between the impeller and the inner surface of the pump case are surely suppressed, and the fuel pump by increasing the sliding resistance It is possible to prevent a decrease in efficiency.
また、ポンプケースが樹脂で形成されることにより、例えば、アルミダイキャスト等によりポンプケースが金属で形成される場合よりも、低コストにポンプケースを形成することができる。したがって低コストな燃料供給装置を提供することができる。 According to the fuel supply device of the aspect of the present invention, when the fuel pump is placed in the case, the fuel pump is supported by the case via the flange portion of the housing case. Therefore, even if an external force such as a reaction force of the discharge pressure is generated, the external force is not directly transmitted to the resin pump case. Therefore, the deformation of the pump case made of resin and the contact between the impeller and the inner surface of the pump case can be suppressed, and the reduction in the efficiency of the fuel pump due to the increase in sliding resistance can be prevented.
Further, by forming the pump case from resin, the pump case can be formed at a lower cost than when the pump case is formed from metal by, for example, aluminum die casting. Therefore, a low-cost fuel supply device can be provided.
以下に、本発明の第1実施形態の燃料供給装置について、図を参照して説明する。なお、インタンク式の燃料供給装置は、燃料ポンプが燃料タンクの上部に取り付けられる上付けタイプと、燃料ポンプが燃料タンクの底部に取り付けられる下付けタイプとが存在する。本発明の第1実施形態では下付けタイプを例にして説明している。また、燃料ポンプの軸方向の相対位置を単に上側、下側と表現している。 (First embodiment, subordinate type fuel supply device)
Hereinafter, a fuel supply device according to a first embodiment of the present invention will be described with reference to the drawings. The in-tank type fuel supply apparatus includes an upper type in which the fuel pump is attached to the upper part of the fuel tank and a lower type in which the fuel pump is attached to the bottom of the fuel tank. In the first embodiment of the present invention, the subscript type is described as an example. Further, the relative position in the axial direction of the fuel pump is simply expressed as the upper side and the lower side.
燃料ポンプ3は、略円柱形状に形成されており、燃料ポンプ3の上側に配設されたモータ部30と、燃料ポンプ3の下側に配設されたポンプ部40とを有している。
モータ部30には、例えば、ブラシ(不図示)付きの直流モータ30aが使用される。
モータ部30の中央には出力軸30bが配置されており、モータ部30の上側と、ポンプ部40の下側とにより回動自在に枢支されている。なお、出力軸30bのポンプ部40側には、後述するように位置規制用のDカット面(不図示)が形成されている。 (Fuel pump)
The
For the
An
また、モータ部30の上側におけるモータ端子32およびブラシの周辺は、モータ部30の他の部分よりも若干縮径され、段部30cが形成されている。段部30cには、後述するハウジングケース20の上端がカシメられている。 In addition, a pair of
In addition, the
チェックバルブ74は、排出ポート31から排出された燃料が、燃料流路ユニット52から燃料ポンプ3内に逆流しないようにするための部材である。 A
The
ポンプ部40には、インペラ47を有する非容積型のポンプが用いられる。ポンプ部40は、インペラ47と、インペラ47の全体を覆うように形成されたポンプケース45とにより構成されている。
インペラ47は、樹脂から構成される略円板状に形成された部材である。インペラ47の略中央には、挿通孔47cが形成されている。挿通孔47cには、直流モータ30aの出力軸30bが挿通される。インペラ47の挿通孔47cおよび出力軸30bのインペラ47側には、例えばDカット面が形成されている。そして、挿通孔47cおよび出力軸30bのDカット面を合わせつつ、インペラ47の挿通孔47cに出力軸30bが挿通されている。挿通孔47cおよび出力軸30bのDカット面により、モータ部30の直流モータ30aによりインペラ47が駆動された際に、直流モータ30aの出力軸30bとインペラ47との相対回転が規制される。 (Pump part)
A non-volumetric pump having an
The
インペラ47の全体を覆うポンプケース45は、ロワケース42とアッパーケース43とミドルケース44とにより構成されている。具体的にポンプケース45は、インペラ47が内側に配置されたミドルケース44を、ロワケース42とアッパーケース43とで挟持することにより、インペラ47の全体を覆うように形成されている。そして、ロワケース42、アッパーケース43およびミドルケース44は、中心軸Oに沿うように、下側から上側に向かってロワケース42、ミドルケース44、アッパーケース43の順に並べて設けられている。
ロワケース42、アッパーケース43およびミドルケース44の各ケースは、いずれも耐油性を有する樹脂から構成され、例えばインジェクション成型等により形成される。 (Pump case)
The
Each of the
ミドルケース44の内側には、ミドルケース44の中心軸とインペラ47の中心軸とが一致するように、インペラ47が配置される。ミドルケース44の内径は、インペラ47の外径よりも若干大きくなるように形成されている。そして、ミドルケース44の内面44a(すなわちポンプケースの内面44a)とインペラ47の外周面との間にクリアランスC1(図3参照)が形成される。ここで、燃料ポンプ3の効率は、ポンプケース45とインペラ47とのクリアランスに依存する。したがって、クリアランスC1は要求される燃料ポンプ3の効率に応じて、所定値に設定される。 The
The
ハウジングケース20の上側端部はカシメ部22を構成し、モータ部30に形成された段部30cに対してカシメられている。 Here, the
The upper end portion of the
ハウジングケース20は、ハウジングケース20の下側端部から内側に向かって屈曲して延出する鍔部21を有している。鍔部21は内フランジ部となっており、シームレス管を切断してハウジングケース20の本体を形成した後、ハウジングケース20の下側端部に、例えばプレスによる曲げ加工等が施されて形成される。鍔部21はハウジングケースと一体的に形成されている。そして、鍔部21の根元部21bは、ハウジングケース20の端部と接続されている。
鍔部21の先端部21aの内径は、ロワケース42に形成された段差部48の側部48bの外径よりも若干大きく形成されている。したがって、鍔部21における先端部21aの内径側に、ロワケース42の側部48bが配置される。 (Isobe)
The
The inner diameter of the
燃料ポンプ3に外挿されるアッパーカップ25は、耐油性に優れた樹脂により形成された、底部を有する筒状の部材であり、例えばインジェクション成型等により形成される。
アッパーカップ25の上側には、液面検出器60の取付部61が形成されている。取付部61は、径方向外側に向かって延出して形成された板状の部材である。取付部61は、アッパーカップ25が形成される際、同時にインジェクションにより成型される。液面検出器60は、取付部61にスナップフィット等により固定される。 (Upper cup)
The
A mounting
筒部24の大径部26の外周面には、フランジユニット4に設けられた係合片15aの係合孔に対応する位置に、係合凸部25aが形成されている。これらアッパーカップ25の係合凸部25aと、フランジユニット4の係合片15aとがスナップフィットし、アッパーカップ25とフランジユニット4とが一体化される。 The
On the outer peripheral surface of the large-
燃料供給装置1は燃料ポンプ3の下側に配置され、燃料タンク2の底壁2bに取り付けられるフランジユニット4を備えている。フランジユニット4は、耐油性に優れた樹脂等から構成される部材であり、例えばインジェクション成型等により形成される。
フランジユニット4は、略円盤形状のフランジ部12と、フランジ部12の上側に形成される係合部15と、フランジ部12の下側に形成されるユニット本体10とにより構成されている。 (Flange unit)
The
The
コネクタ14の内部にはコネクタ端子34が設けられている。コネクタ端子34の一端側34aはコネクタ14の内側に突出している。このコネクタ端子34の一端側34aには、外部電源(不図示)に電気的に接続された外部コネクタ(不図示)が接続される。
また、コネクタ端子34の他端側34bは、フランジ部12の上側に突出している。コネクタ端子34の他端側34bにはハーネス6が接続され、外部電源からモータ部30および液面検出器60に対して電力が供給される。 A
A
The
その後、燃料ポンプ3は、フィルタ排出管51を通じて、ポンプ部40の燃料吸入口41から燃料を汲み上げる。そして、燃料は、ポンプケース45内を通過してモータ部30の上側に圧送され、燃料流路ユニット52を通った後、燃料取出管57を通って内燃機関(不図示)に搬送される。 The filter introduction pipe and the
Thereafter, the
ユニット本体10の内側には、台座部65が形成されている。台座部65は、ユニット本体10の内周面10aの下側が縮径することにより形成される。本実施形態では、ユニット本体10の内周面10aの下側が縮径してリザーバ部11が形成されている。そして、このリザーバ部11により台座部65が形成されている。台座部65に燃料ポンプ3が載置された後、燃料ポンプ3の上側からアッパーカップ25を外挿し、フランジユニット4にアッパーカップ25を固定することで、燃料ポンプ3がフランジユニット4に支持される。 (Pedestal)
A
なお、上述のとおり鍔部21は、ハウジングケース20の下側端部を曲げることにより形成されるので、鍔部21の根元部21bは、ハウジングケース20の端部と接続されている。このため、鍔部21の先端部21aよりも鍔部21の根元部21bのほうが高い強度を有している。したがって、上述のように台座部65の上面65aと鍔部21の根元部21bとを当接させるのが望ましい。 The inner diameter of the
As described above, the
本実施形態によれば、フランジユニット4内に燃料ポンプ3が載置されたとき、燃料ポンプ3はハウジングケース20の鍔部21を介してフランジユニット4に支持される。そのため、吐出圧の反力等の外力が発生しても、樹脂製のポンプケース45に外力が直接伝達されない。これにより、ポンプケース45に伝達される外力を緩和することができるので、ポンプケース45の変形が抑制されて、インペラ47とポンプケース45とのクリアランスC1,C2およびC3を保持することができる。したがって、樹脂により形成されたポンプケース45の変形およびインペラ47とポンプケース45の内面との接触を抑制し、摺動抵抗の増加による燃料ポンプ3の効率低下を防止することができる。
また、ポンプケース45を樹脂で形成することにより、例えば、アルミダイキャスト等によりポンプケース45を金属で形成する場合よりも、低コストでポンプケース45を形成することができる。したがって低コストな燃料供給装置1を提供することができる。 (effect)
According to this embodiment, when the
Moreover, by forming the
次に、本発明の第2実施形態について、図5から図8を用いて説明する。第1実施形態では、燃料ポンプが燃料タンク2の底部に取り付けられる、いわゆる下付けタイプの燃料供給装置1に本発明を適用した場合について説明した。しかし、第2実施形態では、燃料ポンプが燃料タンク2の上部に取り付けられる、いわゆる上付きタイプの燃料供給装置1に本発明を適用した場合について説明する。この点で、本発明の第2実施形態は本発明の第1実施形態とは異なる。なお、本発明の第1実施形態および本発明の第1実施形態の変形例と同様の構成部分については、詳細な説明を省略する。 (Second Embodiment, Upper-Supply Type Fuel Supply Device)
Next, a second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the case in which the present invention is applied to the so-called subordinate type
燃料供給装置1は燃料ポンプ3の上側に配置され、燃料タンク2の上壁2cに取り付けられるフランジユニット4を備えている。
フランジ部12には、燃料タンク2の開口部2aに対応する部位に、環状部13が形成されている。燃料タンク2にフランジ部12を取付けることにより、フランジ部12よりも上側が燃料タンク2の外部に露出する。また、フランジ部12よりも下側が燃料タンク2内の燃料に浸漬される。 (Flange unit)
The
An
燃料流路ユニット52は、プレッシャレギュレータ76、チェックバルブ74、および燃料取出管57と連通している。 The unit
The fuel
燃料ポンプ3の下側に外挿されるロワーカップ100は、耐油性に優れた樹脂により形成された、底部を有する筒状の部材であり、例えばインジェクション成型等により形成される。
ロワーカップ100の径方向外側には、液面検出器60の取付部61が形成されている。取付部61は、径方向外側に向かって延出して形成された板状の部材である。取付部61は、アッパーカップ25が形成される際、同時にインジェクションにより成型される。 (Lower cup)
The
A mounting
フィルタユニット90は、フィルタ排出管51を介して、燃料吸入口41と連通している。燃料タンク2内の燃料は、フィルタユニット90およびフィルタ排出管51を介して、ポンプ部40の燃料吸入口41に導入される。そして、燃料は、ポンプケース45内を通過してモータ部30の上側に圧送され、燃料流路ユニット52を通った後、燃料取出管57を通って内燃機関(不図示)に搬送される。 A
The
また、図7および図8に示すように、ロワーカップ100の内側には、台座部65が形成されている。台座部65は、ロワーカップ100の内周面100aの下側が縮径することにより形成される。ロワーカップ100の台座部65に燃料ポンプ3が載置された後、燃料ポンプ3の上側からフランジユニット4を外挿し、ロワーカップ100にフランジユニット4が固定される。その結果、燃料ポンプ3のハウジングケース20がロワーカップ100の台座部65に当接した状態で支持される。 (Pedestal)
As shown in FIGS. 7 and 8, a
本実施形態によれば、燃料タンク2の上壁2cに取り付けられる燃料供給装置1に、上述の構造が適用されている。上述の構造は、とりわけ燃料ポンプ3の上側にフランジユニット4が設けられている、いわゆる上付けタイプの燃料供給装置1に好適に用いることができる。したがって、燃料タンク2の上側に固定される燃料供給装置1で、樹脂により形成されたポンプケース45の変形およびインペラ47とポンプケース45の内面44aとの接触を確実に抑制し、摺動抵抗の増加による燃料ポンプ3の効率低下を防止することができる。 (Effect of 2nd Embodiment)
According to this embodiment, the above-described structure is applied to the
本発明の第1実施形態では、ユニット本体10の内周面10aの下側を縮径させてリザーバ部11が形成され、このリザーバ部11により台座部65が形成されている。しかし、リザーバ部11とは別に内周面10aの縮径部を設けることにより台座部65が形成されてもよい。ただし、フランジユニット4のスペースを有効に使って台座部65を設けている点で、本発明の第1実施形態に優位性がある。 The present invention is not limited to the embodiment described above.
In the first embodiment of the present invention, the
2 燃料タンク
2b 底壁
3 燃料ポンプ
4 フランジユニット(ケース)
20 ハウジングケース
21 鍔部
21b 根元部
30 モータ部
40 ポンプ部
46 角リング(シール部材)
65 台座部 DESCRIPTION OF
20
65 pedestal
Claims (6)
- 燃料タンク内に配置され、前記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、
前記燃料ポンプを支持すると共に、前記燃料タンクの壁面に取り付けられるケースとを備えた燃料供給装置において、
前記燃料ポンプは、
モータ部と、
前記モータ部の下部に設けられたポンプ部と、
前記モータ部および前記ポンプ部の周囲を覆うように形成された金属製のハウジングケースと、
を備え、
前記ポンプ部は、樹脂により形成されたポンプケースを有し、
前記ハウジングケースの内側には、前記ポンプケースに当接する鍔部が形成されており、
前記燃料ポンプは、前記鍔部を介して、前記ケースに支持されることを特徴とする燃料供給装置。 A fuel pump disposed in the fuel tank and pumping up the fuel in the fuel tank and pumping it to the internal combustion engine;
A fuel supply device comprising a case that supports the fuel pump and is attached to a wall surface of the fuel tank.
The fuel pump is
A motor section;
A pump unit provided at a lower portion of the motor unit;
A metal housing case formed to cover the periphery of the motor part and the pump part;
With
The pump part has a pump case made of resin,
On the inner side of the housing case, a collar portion that contacts the pump case is formed,
The fuel supply device according to claim 1, wherein the fuel pump is supported by the case via the flange. - 前記ケース内に、前記鍔部を介して、前記ポンプケースを支持する台座部が設けられたことを特徴とする請求項1に記載の燃料供給装置。 2. The fuel supply device according to claim 1, wherein a pedestal for supporting the pump case is provided in the case via the flange.
- 前記台座部は、前記鍔部の根元部を介して、前記ポンプケースを支持するように形成されていることを特徴とする請求項2に記載の燃料供給装置。 3. The fuel supply device according to claim 2, wherein the pedestal portion is formed to support the pump case via a base portion of the flange portion.
- 前記ポンプケースと前記鍔部との間に、シール部材が設けられたことを特徴とする請求項1から請求項3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 1 to 3, wherein a seal member is provided between the pump case and the flange portion.
- 前記鍔部は、前記ハウジングケースの下方端部に形成された内フランジ部であることを特徴とする請求項1から請求項4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 1 to 4, wherein the flange portion is an inner flange portion formed at a lower end portion of the housing case.
- 前記ケースは、前記燃料タンクの底壁に取り付けられ、前記ケースに形成されている前記台座部上に、前記燃料ポンプが載置されたことを特徴とする請求項1から請求項5のいずれか1項に記載の燃料供給装置。 6. The fuel cell according to claim 1, wherein the case is attached to a bottom wall of the fuel tank, and the fuel pump is placed on the pedestal portion formed in the case. The fuel supply apparatus according to item 1.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013016016-0A BR112013016016B1 (en) | 2010-12-24 | 2011-12-20 | fuel delivery device |
CN201180061187.0A CN103261654B (en) | 2010-12-24 | 2011-12-20 | Fuel supplying device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-288664 | 2010-12-24 | ||
JP2010288664A JP5777878B2 (en) | 2010-12-24 | 2010-12-24 | Fuel supply device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012086634A1 true WO2012086634A1 (en) | 2012-06-28 |
Family
ID=46313903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/079483 WO2012086634A1 (en) | 2010-12-24 | 2011-12-20 | Fuel supply device |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP5777878B2 (en) |
CN (1) | CN103261654B (en) |
BR (1) | BR112013016016B1 (en) |
WO (1) | WO2012086634A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015146335A1 (en) * | 2014-03-28 | 2015-10-01 | 株式会社ケーヒン | Fuel supply device |
JP2015190425A (en) * | 2014-03-28 | 2015-11-02 | 株式会社ケーヒン | Fuel supply device |
JP2015190426A (en) * | 2014-03-28 | 2015-11-02 | 株式会社ケーヒン | Fuel supply device |
JP2016169673A (en) * | 2015-03-13 | 2016-09-23 | 株式会社ケーヒン | Fuel supply device |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10056800B2 (en) * | 2015-07-30 | 2018-08-21 | Delphi Technologies Ip Limited | Fluid delivery module |
CN106533133A (en) * | 2016-12-01 | 2017-03-22 | 南通沃特光电科技有限公司 | Packaging method of high-voltage frequency converter power unit |
WO2019151296A1 (en) * | 2018-02-01 | 2019-08-08 | 株式会社デンソー | Fuel supply device |
JP6661736B1 (en) * | 2018-11-30 | 2020-03-11 | 株式会社ケーヒン | Fuel supply device |
JP6840274B1 (en) * | 2020-01-08 | 2021-03-10 | 三菱電機株式会社 | Fuel supply device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010133263A (en) * | 2008-12-02 | 2010-06-17 | Mitsuba Corp | Fuel supply system |
JP2010180856A (en) * | 2009-02-09 | 2010-08-19 | Mitsuba Corp | Fuel pump and fuel supply device using fuel pump |
WO2010104058A1 (en) * | 2009-03-09 | 2010-09-16 | 株式会社ミツバ | Pressure regulator and fuel supply device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW493038B (en) * | 1999-04-16 | 2002-07-01 | Mitsuba Corporationhonda | Fuel system |
WO2007004676A1 (en) * | 2005-07-06 | 2007-01-11 | Mitsuba Corporation | Fuel pump |
-
2010
- 2010-12-24 JP JP2010288664A patent/JP5777878B2/en not_active Expired - Fee Related
-
2011
- 2011-12-20 CN CN201180061187.0A patent/CN103261654B/en not_active Expired - Fee Related
- 2011-12-20 WO PCT/JP2011/079483 patent/WO2012086634A1/en active Application Filing
- 2011-12-20 BR BR112013016016-0A patent/BR112013016016B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010133263A (en) * | 2008-12-02 | 2010-06-17 | Mitsuba Corp | Fuel supply system |
JP2010180856A (en) * | 2009-02-09 | 2010-08-19 | Mitsuba Corp | Fuel pump and fuel supply device using fuel pump |
WO2010104058A1 (en) * | 2009-03-09 | 2010-09-16 | 株式会社ミツバ | Pressure regulator and fuel supply device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015146335A1 (en) * | 2014-03-28 | 2015-10-01 | 株式会社ケーヒン | Fuel supply device |
JP2015190425A (en) * | 2014-03-28 | 2015-11-02 | 株式会社ケーヒン | Fuel supply device |
JP2015190426A (en) * | 2014-03-28 | 2015-11-02 | 株式会社ケーヒン | Fuel supply device |
JP2015190423A (en) * | 2014-03-28 | 2015-11-02 | 株式会社ケーヒン | Fuel supply device |
CN106103965A (en) * | 2014-03-28 | 2016-11-09 | 株式会社京浜 | Fuel supply system |
CN106103965B (en) * | 2014-03-28 | 2019-01-01 | 株式会社京浜 | Fuel supply system |
JP2016169673A (en) * | 2015-03-13 | 2016-09-23 | 株式会社ケーヒン | Fuel supply device |
Also Published As
Publication number | Publication date |
---|---|
CN103261654B (en) | 2016-02-17 |
BR112013016016B1 (en) | 2020-12-29 |
BR112013016016A2 (en) | 2018-07-10 |
CN103261654A (en) | 2013-08-21 |
JP5777878B2 (en) | 2015-09-09 |
JP2012136975A (en) | 2012-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2012086634A1 (en) | Fuel supply device | |
US9476392B2 (en) | Fuel pump assembly | |
EP2256331B1 (en) | Fuel supply module | |
JP6423747B2 (en) | Pressure control device and fuel supply device | |
US8323004B2 (en) | Fuel supply device | |
JP4923123B2 (en) | Fuel supply device | |
JP5663624B2 (en) | Fuel supply device | |
JP2008184954A (en) | Fuel pump module | |
JP2010133263A (en) | Fuel supply system | |
JP4922868B2 (en) | Fuel supply device | |
JP6793606B2 (en) | Pressure control device and fuel supply device | |
JPWO2006115014A1 (en) | Fuel supply device | |
JP4246118B2 (en) | Fuel supply device | |
JP5285057B2 (en) | Fuel supply device | |
JP5756354B2 (en) | Fuel supply device | |
JP4871400B2 (en) | Fuel supply device | |
JP6979798B2 (en) | Fuel pump and fuel supply system | |
JP6373488B2 (en) | Valve device | |
JP5745878B2 (en) | Fuel supply device | |
JP5688964B2 (en) | Fuel supply device | |
JP2010144594A (en) | Fuel pump | |
US7950898B2 (en) | Fuel pump having impeller | |
JP6921666B2 (en) | Pressure controller and fuel supply | |
JP2013064329A (en) | Fuel supply device | |
WO2017203589A1 (en) | Pressure control device and fuel supply device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180061187.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11851685 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11851685 Country of ref document: EP Kind code of ref document: A1 |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112013016016 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112013016016 Country of ref document: BR Kind code of ref document: A2 Effective date: 20130621 |