WO2019208078A1 - Pompe à huile électrique - Google Patents

Pompe à huile électrique Download PDF

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Publication number
WO2019208078A1
WO2019208078A1 PCT/JP2019/013338 JP2019013338W WO2019208078A1 WO 2019208078 A1 WO2019208078 A1 WO 2019208078A1 JP 2019013338 W JP2019013338 W JP 2019013338W WO 2019208078 A1 WO2019208078 A1 WO 2019208078A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
rotor
discharge port
axial direction
suction port
Prior art date
Application number
PCT/JP2019/013338
Other languages
English (en)
Japanese (ja)
Inventor
慈裕 片岡
小林　喜幸
Original Assignee
日本電産トーソク株式会社
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 日本電産トーソク株式会社 filed Critical 日本電産トーソク株式会社
Priority to JP2020516129A priority Critical patent/JP7310804B2/ja
Priority to CN201990000648.5U priority patent/CN214036097U/zh
Publication of WO2019208078A1 publication Critical patent/WO2019208078A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to an electric oil pump.
  • Patent Document 1 discloses an electric oil pump in which a motor unit, a pump unit, and an inverter unit having a circuit board are integrated.
  • the pump unit includes a pump body that houses the pump rotor, and a pump cover that is attached to one axial side of the pump body.
  • the pump cover has a suction port for sucking oil and a discharge port for discharging oil.
  • the suction port and the discharge port are provided on the end surface on one axial side of the pump cover.
  • the suction port opens at an end portion on one axial side of the suction port protruding from the end surface.
  • the discharge port opens at an end portion on one side in the axial direction of the discharge port protruding from the end surface.
  • the suction port and the discharge port are disposed adjacent to the end surface in the radial direction.
  • the protruding length of the discharge port in the axial direction is longer than the protruding length of the suction port in the axial direction. For this reason, the oil passage can be easily brought into contact with each of the suction port and the discharge port.
  • An object of the present invention is to provide an electric oil pump capable of suppressing an increase in axial size of the electric oil pump.
  • An exemplary first invention of the present application is a motor unit having a shaft centered on a central axis extending in the axial direction, and is positioned on one axial side of the motor unit and driven by the motor unit via the shaft.
  • a pump housing that is provided with a pump rotor, an intake port that sucks in the oil, and a discharge port that discharges the oil, and houses the pump rotor
  • the pump housing includes a pump body having a housing portion that houses the pump rotor, and a pump cover that is attached to one axial side of the pump body.
  • An end face provided on one side and a cylindrical side face connected to the peripheral edge of the end face and extending to the other side in the axial direction, and the suction port is provided on one of the end face and the side face,
  • the discharge port is provided on the other of the end surface and the front side surface.
  • the first exemplary invention of the present application it is possible to provide an electric oil pump capable of suppressing an increase in axial size of the electric oil pump.
  • an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system.
  • the Z-axis direction is a direction parallel to the axial direction of the central axis J shown in FIG.
  • the X-axis direction is a direction parallel to the short direction of the electric oil pump shown in FIG. 1, that is, a direction orthogonal to the paper surface of FIG.
  • the Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction.
  • the side facing the arrow shown in the figure is the + side and the opposite side is the-side.
  • the positive side (+ Z side) in the Z-axis direction is described as “rear side”
  • the negative side ( ⁇ Z side) in the Z-axis direction is described as “front side”.
  • the rear side and the front side are simply names used for explanation, and do not limit the actual positional relationship and direction.
  • the direction parallel to the central axis J (Z-axis direction) is simply described as “axial direction”
  • the radial direction centered on the central axis J is simply described as “radial direction”
  • the center The circumferential direction around the axis J that is, the circumference of the central axis J ( ⁇ direction) is simply referred to as “circumferential direction”.
  • extending in the axial direction means not only extending in the axial direction (Z-axis direction) but also extending in a direction inclined by less than 45 ° with respect to the axial direction. Including. Further, in this specification, the term “extend in the radial direction” means 45 ° with respect to the radial direction in addition to the case where it extends strictly in the radial direction, that is, the direction perpendicular to the axial direction (Z-axis direction). Including the case of extending in a tilted direction within a range of less than.
  • FIG. 1 is a perspective view of the electric oil pump according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing the internal structure of the electric oil pump.
  • the electric oil pump 1 of this embodiment has the motor part 10, the pump part 40, and the inverter part 70, as shown in FIG.1 and FIG.2.
  • the motor unit 10 and the pump unit 40 are arranged along the axial direction.
  • the motor unit 10 includes a shaft 11 disposed along a central axis J extending in the axial direction.
  • the pump unit 40 is located on one side (front side) in the axial direction of the motor unit 10 and is driven by the motor unit 10 via the shaft 11 to discharge oil.
  • the inverter unit 70 is located on the other axial side (rear side) of the motor unit 10 and is fixed to the motor unit 10.
  • each constituent member will be described in detail.
  • the inverter unit 70 includes an inverter housing 73 having a circuit board housing part 73 a for housing the circuit board 75.
  • the inverter housing 73 has a bottomed cylindrical shape having a bottom portion 73b on the motor unit 10 side.
  • the inverter housing 73 extends radially outward from the other axial side (rear side) of the motor housing 13.
  • the inverter housing 73 is made of a resin material and has a rectangular shape when viewed in the axial direction.
  • the inverter unit 70 further includes a cover unit 90 that covers an opening 73 c that opens to the other axial side (rear side) of the inverter housing 73.
  • the inverter housing 73 has a recess 73 e that is recessed to the inside of the inverter housing 73 on a side surface 73 d in a direction orthogonal to a direction extending radially outward when viewed in the axial direction.
  • the recesses 73e are both ends of the inverter housing 73 in the X-axis direction, and are positioned on the radially outer side of the cylindrical part 14 and on the negative side ( ⁇ Y side) of the cylindrical part 14 in the Y-axis direction. It is provided at a position close to the flange portion 77.
  • a total of four recesses 73e are provided, two at each of the side surfaces 73d on both sides in the X-axis direction of the inverter housing 73.
  • a recess 73e provided on one side in the X-axis direction of the inverter housing 73 and a recess 73e provided on the other side in the X-axis direction of the inverter housing 73 intersect with the central axis J and extend in the Y-axis direction (see FIG. 5).
  • the flange portion 77 will be described later.
  • a plurality of flange portions 77 extending radially with respect to the central axis J are provided on the side surfaces 73d on both sides in the X-axis direction of the inverter housing 73.
  • four flange portions 77 are provided at intervals in the circumferential direction.
  • the flange portion 77 is provided with a fixing hole portion 77a for passing a bolt.
  • the fixing hole 77a is a hole through which a bolt for fixing the electric oil pump 1 to a fixing object (not shown) is passed.
  • FIG. 3 is an enlarged sectional view of the fixing member.
  • FIG. 4 is an enlarged side view of the fixing member.
  • the recessed portion 73 e has a surface portion 73 e 1 that is recessed from a position having a predetermined distance from the end surface 73 f to the other axial side (rear side) of the side surface 73 d of the inverter housing 73.
  • the end surface 73 f is a surface facing the motor unit 10 side of the inverter housing 73.
  • the recess 73e has a pair of side surface portions 73e2 extending in the axial direction on both sides in the extending direction of the inverter housing 73 while extending from the surface portion 73e1 to the other side (rear side) in the side surface 73d.
  • the distance L between the pair of side surface portions 73e2 is larger than the width W of the crimped portion 31.
  • the caulking portion 31 will be described later.
  • the motor unit 10 includes a motor housing 13, a rotor 20, a shaft 11, and a stator 22.
  • the motor unit 10 is, for example, an inner rotor type motor, in which the rotor 20 is fixed to the other axial side (rear side) of the shaft 11, and the stator 22 is positioned on the radially outer side of the rotor 20.
  • the motor housing 13 accommodates the rotor 20 and the stator 22. Further, the motor housing 13 includes a cylindrical portion 14 and a base plate 25. The cylindrical portion 14 is located outside the stator 22 in the radial direction and surrounds the stator 22. The base plate 25 is connected to the end portion of the cylindrical portion 14 on the inverter portion 70 side, is disposed on one side (front side) in the axial direction of the inverter housing 73, and spreads in the radial direction with respect to the central axis J.
  • the cylindrical portion 14 extends in the axial direction and has a through hole 14a therein.
  • the shaft 11, the rotor 20, and the stator 22 of the motor unit 10 are disposed in the through hole 14a.
  • the outer surface of the stator 22, that is, the outer surface of a core back portion 22a described later is fitted to the inner surface 14b of the cylindrical portion 14. As a result, the stator 22 is accommodated in the cylindrical portion 14.
  • the cylinder part 14 is made of a metal material.
  • the base plate 25 is connected to the end of the cylindrical portion 14 on the inverter portion 70 side. As shown in FIGS. 1 and 2, the base plate 25 is plate-shaped and extends in a direction along the end surface 73 f on one axial side of the inverter housing 73 to cover the end surface 73 f. In the present embodiment, the base plate 25 protrudes radially outward from the cylindrical portion 14 and has a rectangular shape in the Y-axis direction when viewed in the axial direction. The negative side ( ⁇ Y side) of the base plate 25 in the Y axis direction protrudes larger than the plus side.
  • the cylindrical portion 14 and the base plate 25 of the motor housing 13 are an integrated object by drawing.
  • FIG. 5 is a bottom view of the electric oil pump.
  • a plurality of flange portions 25 a projecting radially are provided outside the base plate 25 in the radial direction of the cylindrical portion 14.
  • four flange portions 25a are provided at intervals in the circumferential direction.
  • the flange portion 25a is provided with a fixing hole portion 25b for allowing the bolt to pass therethrough.
  • the fixing hole portion 25b is a hole through which a bolt for fixing the electric oil pump 1 to a fixed object is passed.
  • the fixing hole portion 25b of the base plate 25 and the fixing hole portion 77a of the inverter housing 73 communicate with each other.
  • the cover 90 that covers the opening of the inverter housing 73 is provided with a hole that communicates with the fixing hole 77 a of the inverter housing 73. For this reason, the inverter housing 73 and the cover part 90 are fastened together via a bolt passed through the base plate 25 and are integrally coupled.
  • the base plate 25 includes a fixing member 30 that is provided integrally with the base plate 25 and fixes the inverter housing 73 at least in the axial direction.
  • the fixing member 30 is located at both ends of the base plate 25 in a direction intersecting with a direction extending outward in the radial direction of the base plate 25 when viewed in the axial direction.
  • the fixing member 30 is close to the flange portion 25a located at both ends of the base plate 25 in the X-axis direction, on the radially outer side of the cylindrical portion 14 and on the negative side of the cylindrical portion 14 in the Y-axis direction. Provided in position. That is, a total of four fixing members 30 are provided at two positions on both ends of the base plate 25 in the X-axis direction.
  • the fixing member 30 provided on one side of the base plate 25 in the X-axis direction and the fixing member 30 provided on the other side of the base plate 25 in the X-axis direction intersect the virtual axis A that intersects the central axis J and extends in the Y-axis direction. Opposed to each other.
  • the fixing member 30 has a caulking portion 31 protruding from each of the end portions on both sides of the base plate 25, as shown in FIGS.
  • the caulking portion 31 is bent to the other side (rear side) in the axial direction with respect to the base plate 25 and is bent into the recess 73e, thereby fixing the inverter housing 73 to the base plate 25.
  • the caulking portion 31 is in contact with the surface portion 73e1 while being bent in the recess 73e. For this reason, the inverter housing 73 can be fixed to the base plate 25 at least in the axial direction by the caulking portion 31.
  • the caulking portion 31 is in contact with the surface portion 73e1 while being bent in the recess 73e, and the front end portion of the caulking portion 31 is indicated on the one side in the axial direction (front side). ) May be bent further.
  • the backlash that the inverter housing 73 moves in the X-axis direction with respect to the base plate 25 can be further suppressed.
  • the caulking portion 31 is provided at both end portions in the X-axis direction of the base plate 25. Therefore, when the inverter housing 73 is fixed by the caulking portion 31, the inverter housing 73 is attached to the base plate 25. It can be firmly fixed without rattling.
  • the caulking portion 31 is in a position in which the end portions on both sides in the width direction of the caulking portion 31 face the pair of side surface portions 73 e 2 of the concave portion 73 e in a state where the caulking portion 31 is in contact with the surface portion 73 e 1 of the concave portion 73 e. Placed in. For this reason, when the crimping part 31 is bent in the recessed part 73e, it can suppress that the crimping part 31 contacts the side part 73e2 of the recessed part 73e.
  • the end portions on both sides in the width direction of the caulking portion 31 come into contact with the side surface portion 73e2 of the recess 73e, and the Y-axis of the inverter housing 73 Directional deviation can be suppressed.
  • the rotor 20 has a rotor core 20a and a rotor magnet 20b.
  • the rotor core 20a is fixed to the shaft 11 so as to surround the shaft 11 around the axis ( ⁇ direction).
  • the rotor magnet 20b is fixed to the outer surface along the axis ( ⁇ direction) of the rotor core 20a.
  • the rotor core 20a and the rotor magnet 20b rotate together with the shaft 11.
  • the rotor 20 may be an embedded magnet type in which a permanent magnet is embedded in the rotor 20.
  • the embedded magnet type rotor 20 can reduce the peeling of the magnet due to centrifugal force, and actively uses the reluctance torque. can do.
  • the stator 22 surrounds the rotor 20 around the axis ( ⁇ direction), and rotates the rotor 20 around the central axis J.
  • the stator 22 includes a core back portion 22a, a teeth portion 22c, a coil 22b, and an insulator (bobbin) 22d.
  • the shape of the core back portion 22a is a cylindrical shape concentric with the shaft 11.
  • the teeth part 22c extends toward the shaft 11 from the inner surface of the core back part 22a.
  • a plurality of teeth portions 22c are provided, and are arranged at equal intervals in the circumferential direction of the inner surface of the core back portion 22a.
  • the coil 22b is provided around the insulator (bobbin) 22d.
  • An insulator (bobbin) 22d is attached to each tooth portion 22c.
  • the shaft 11 extends along the central axis J and penetrates the motor unit 10.
  • the front side ( ⁇ Z side) of the shaft 11 protrudes from the motor unit 10, is supported by the bearing 17, and extends into the pump unit 40.
  • the rear side (+ Z side) of the shaft 11 protrudes from the rotor 20 and is supported by the bearing 16. For this reason, the rotor 20 is in a state where both ends are supported.
  • the pump unit 40 is located on one axial side of the motor unit 10, specifically, on the front side ( ⁇ Z side).
  • the pump unit 40 is driven through the shaft 11 by the motor unit 10.
  • the pump unit 40 includes a pump rotor 47 and a pump housing 51.
  • the pump housing 51 includes a pump body 52 and a pump cover 57.
  • the pump body 52 is fixed to the front side ( ⁇ Z side) of the motor housing 13 on the front side ( ⁇ Z side) of the motor unit 10.
  • the pump body 52 has a recess 54 that is recessed from the rear side (+ Z side) surface to the front side ( ⁇ Z side).
  • the bearing 17 and the seal member 18 are accommodated in the recess 54.
  • the pump body 52 has a housing portion 53 having a side surface 53 a that faces the peripheral surface of the pump rotor 47 and a bottom surface 53 b that is located on the rear side (+ Z side) of the pump portion 40.
  • the accommodating portion 53 opens to the front side ( ⁇ Z side) and is recessed to the rear side (+ Z side).
  • the shape of the accommodating portion 53 viewed from the axial direction is a circular shape.
  • the pump cover 57 covers the pump body 52 from the front side ( ⁇ Z side), thereby providing an accommodating portion 53 between the pump body 52 and the pump cover 52.
  • the pump body 52 has a through hole 55 penetrating along the central axis J.
  • Through-holes 55 are open at both ends in the axial direction to allow the shaft 11 to pass therethrough, a rear side (+ Z side) opening is opened in the recess 54, and a front side ( ⁇ Z side) opening is opened in the accommodating portion 53.
  • the through hole 55 functions as a slide bearing 45 that supports the shaft 11 rotatably.
  • a pump-side flange portion 52 a that protrudes radially outward and extends in the axial direction is provided on the outer side surface of the pump body 52.
  • a plurality of the pump-side flange portions 52a are provided at intervals in the circumferential direction.
  • the pump side flange portion 52a is provided with a through hole (not shown) penetrating in the axial direction.
  • the pump body 52 is detachably fixed to the motor housing 13 through a bolt 56 passed through the through hole.
  • the pump cover 57 includes an end surface 58 provided on one side (front side) in the axial direction, and a cylindrical side surface 61 that is connected to the peripheral portion of the end surface 58 and extends to the other side in the axial direction. And having.
  • a suction port 63 is provided on one of the end surface 58 and the side surface 61, and a discharge port 64 is provided on the other of the end surface 58 and the side surface 61.
  • the end surface 58 has a circular shape when viewed in the axial direction.
  • the suction port 63 is provided on the end surface 58.
  • the discharge port 64 is provided on the side surface 61.
  • the suction port 63 is disposed at a peripheral portion on one side in the radial direction of the end surface, and the discharge port 64 is disposed at a position facing the suction port 63 with respect to the central axis J.
  • the suction port 63 has a circular shape when viewed in the axial direction.
  • the discharge port 64 has a long hole shape extending in the circumferential direction of the side surface 61.
  • the opening area of the discharge port 64 is the same as the opening area of the suction port 63.
  • the opening area of the discharge port 64 may be slightly smaller than the opening area of the suction port 63.
  • the discharge port 64 is disposed at a position having a predetermined distance from the end on one side in the axial direction of the side surface 61 to the other side in the axial direction.
  • a sealing member 66 is provided in an annular shape so that a supply oil passage for supplying oil to the suction port 63 is in close contact with the side surface 61.
  • the suction port is provided on the end surface and the discharge port is provided on the side surface is shown, but the present invention is not limited to this.
  • the discharge port may be provided on the end surface, and the suction port may be provided on the side surface.
  • the relative positions of the suction port and the discharge port and the area of the opening are the same as in the above-described embodiment.
  • the pump rotor 47 is attached to the shaft 11. More specifically, the pump rotor 47 is attached to the front side ( ⁇ Z side) of the shaft 11.
  • the pump rotor 47 includes an inner rotor 47a attached to the shaft 11 and an outer rotor 47b surrounding the radially outer side of the inner rotor 47a.
  • the inner rotor 47a is annular.
  • the inner rotor 47a is a gear having teeth on the radially outer surface.
  • the inner rotor 47a is fixed to the shaft 11. More specifically, the front side ( ⁇ Z side) end of the shaft 11 is press-fitted inside the inner rotor 47a.
  • the inner rotor 47a rotates around the axis ( ⁇ direction) together with the shaft 11.
  • the outer rotor 47b has an annular shape surrounding the radially outer side of the inner rotor 47a.
  • the outer rotor 47b is a gear having teeth on the radially inner side surface.
  • the inner rotor 47a and the outer rotor 47b mesh with each other, and the outer rotor 47b rotates as the inner rotor 47a rotates. That is, the pump rotor 47 is rotated by the rotation of the shaft 11. In other words, the motor unit 10 and the pump unit 40 have the same rotation axis. Thereby, it can suppress that the electric oil pump 1 enlarges to an axial direction.
  • a suction port 63 a is disposed on the rear side (+ Z side) of the negative pressure region of the pump rotor 47. Further, a discharge port 64 a is disposed on the rear side (+ Z side) of the pressurizing region of the pump rotor 47.
  • the oil sucked into the accommodating portion 53 from the suction port 63 provided in the pump cover 57 is accommodated in a volume portion between the inner rotor 47a and the outer rotor 47b and sent to the pressurizing region. Thereafter, the oil is discharged from the discharge port 64 through the discharge port 64a.
  • the pump cover 57 of the electric oil pump 1 is provided with a suction port 63 on one of the end surface 58 and the side surface 61, and the end surface 58 and the side surface 61.
  • One of the other is provided with a discharge port 64.
  • the suction port 63 and the discharge port 64 are located away from each other, the positions of the suction port 63 and the discharge port 64 are compared with the case where the suction port 63 and the discharge port 64 are disposed in close proximity. There is no need to shift the direction. For this reason, since the oil passage can be directly connected to each of the suction port 63 and the discharge port 64, an increase in the size of the electric oil pump 1 in the axial direction can be suppressed.
  • the suction port 63 is disposed at a peripheral portion on one side in the radial direction of the end surface 58, and the discharge port 64 is disposed at a position facing the suction port 63 with respect to the central axis J.
  • the relative positions of the suction port 63 and the discharge port 64 can be arranged at positions separated from each other.
  • operativity at the time of connecting an oil path to each of the suction inlet 63 and the discharge outlet 64 can be made easy.
  • the suction port 63 has a circular shape when viewed in the axial direction, and the discharge port 64 has a long hole shape extending in the circumferential direction of the side surface 61. Since the shapes of the suction port 63 and the discharge port 64 are different, it is possible to prevent an erroneous operation of erroneously connecting the corresponding oil passages.
  • the opening area of the discharge port 64 is the same as or slightly smaller than the opening area of the suction port 63. For this reason, when the oil sucked from the suction port 63 flows through the discharge port 64, it is possible to suppress a decrease in pressure loss and prevent a decrease in the flow rate of the oil flowing out from the discharge port 64.
  • a seal member 66 is provided in an annular shape between the end on one side in the axial direction of the side surface 61 and the discharge port 64 so that the supply oil passage for supplying oil to the suction port 63 is in close contact with the side surface. .
  • the oil passage for supplying oil to the suction port 63 can be connected to the pump cover 57 in a state of being in close contact with the side surface 61. For this reason, intrusion of air can be prevented, and a decrease in the flow rate of oil sucked into the suction port 63 can be prevented.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Rotary Pumps (AREA)

Abstract

La présente invention concerne une pompe à huile électrique (1) possédant une unité moteur (10), une unité pompe (40) et une unité onduleur (70) fixée à l'unité moteur (10). L'unité moteur (10) possède un rotor, un stator et un carter de moteur (13) qui loge le rotor et le stator. L'unité pompe (40) possède un rotor de pompe, un orifice d'aspiration (63) pour aspirer de l'huile, un orifice d'évacuation (64) pour évacuer de l'huile et un logement de pompe (51) qui loge le rotor de pompe. Le logement de pompe (51) possède un corps de pompe (52) qui loge le rotor de pompe et un couvercle de pompe (57) fixé au corps de pompe. Le couvercle de pompe (57) possède une surface d'extrémité (58) agencée sur un côté dans la direction axiale et une surface latérale cylindrique (61) reliée à une section périphérique de la surface d'extrémité (58) et s'étendant vers l'autre côté dans la direction axiale. L'orifice d'aspiration (63) est agencé dans une surface quelconque parmi la surface d'extrémité (58) et la surface latérale (61), et l'orifice d'évacuation (64) est agencé dans l'autre.
PCT/JP2019/013338 2018-04-24 2019-03-27 Pompe à huile électrique WO2019208078A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020516129A JP7310804B2 (ja) 2018-04-24 2019-03-27 電動オイルポンプ
CN201990000648.5U CN214036097U (zh) 2018-04-24 2019-03-27 电动油泵

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018083415 2018-04-24
JP2018-083415 2018-04-24

Publications (1)

Publication Number Publication Date
WO2019208078A1 true WO2019208078A1 (fr) 2019-10-31

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Application Number Title Priority Date Filing Date
PCT/JP2019/013338 WO2019208078A1 (fr) 2018-04-24 2019-03-27 Pompe à huile électrique

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JP (1) JP7310804B2 (fr)
CN (1) CN214036097U (fr)
WO (1) WO2019208078A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013241837A (ja) * 2012-05-17 2013-12-05 Aisin Seiki Co Ltd 電動ポンプ
JP2015172350A (ja) * 2014-03-12 2015-10-01 日立オートモティブシステムズ株式会社 電動オイルポンプ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013241837A (ja) * 2012-05-17 2013-12-05 Aisin Seiki Co Ltd 電動ポンプ
JP2015172350A (ja) * 2014-03-12 2015-10-01 日立オートモティブシステムズ株式会社 電動オイルポンプ

Also Published As

Publication number Publication date
JP7310804B2 (ja) 2023-07-19
JPWO2019208078A1 (ja) 2021-05-13
CN214036097U (zh) 2021-08-24

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