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WO2018131403A1 - Pompe à huile à entraînement électrique - Google Patents

Pompe à huile à entraînement électrique Download PDF

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Publication number
WO2018131403A1
WO2018131403A1 PCT/JP2017/045643 JP2017045643W WO2018131403A1 WO 2018131403 A1 WO2018131403 A1 WO 2018131403A1 JP 2017045643 W JP2017045643 W JP 2017045643W WO 2018131403 A1 WO2018131403 A1 WO 2018131403A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
housing
motor
oil pump
electric oil
Prior art date
Application number
PCT/JP2017/045643
Other languages
English (en)
Japanese (ja)
Inventor
豪 坂田
河村　清美
雄一郎 定永
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to JP2018561887A priority Critical patent/JPWO2018131403A1/ja
Priority to CN201780082665.3A priority patent/CN110168224A/zh
Publication of WO2018131403A1 publication Critical patent/WO2018131403A1/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
    • 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 that electrically drives an oil pump, and more particularly to a structure of an electric oil pump in which a motor unit and an oil pump unit are integrated.
  • FIG. 7A is a longitudinal sectional view showing a configuration example of such a conventional electric oil pump
  • FIG. 7B is a transverse sectional view thereof.
  • the conventional electric oil pump 901 includes the oil pump 902 and the electric motor 903 as described above.
  • the electric motor 903 includes a rotating rotor 904, and a stator 905 fixed to the outside of the outer peripheral surface of the rotor 904.
  • the rotor 904 is configured by arranging a plurality of permanent magnets 904b along the circumferential direction on the outer periphery of the rotating shaft 904a.
  • the rotating shaft 904a is a rotating shaft shared by the electric motor 903 and the oil pump 902.
  • the stator 905 is formed by winding a coil 905b around an insulator 905c attached to a core 905a, and is integrally molded with a motor housing molded with a resin 905d.
  • the oil pump 902 has an inner rotor 902a and an outer rotor 902b as shown in FIG. 7B.
  • the inner rotor 902a illustrated in FIG. 7B has four external teeth connected to the tip of the rotating shaft 904a.
  • the outer rotor 902b illustrated in FIG. 7B has five inner teeth that mesh with the outer teeth.
  • the oil pump 902 performs a pump operation using the gap 902c between the external teeth and the internal teeth.
  • the electric oil pump of the present invention includes an oil pump in which a pump rotor is rotatably supported in a pump chamber formed between a pump plate and a pump housing, a rotary shaft fixed to the pump rotor, and a cylindrical motor A motor that has a housing and is directly connected to the rotation shaft and is directly connected to the rotation shaft and rotationally drives the pump rotor.
  • the end surface on the motor side of the pump housing and the end surface on the pump housing side of the motor housing are adjacent to each other in the axial direction of the rotating shaft.
  • the oil pump and the motor are fastened in the axial direction by a plurality of fastening bolts on the inner side of the outer diameter of the motor housing and the outer diameter of the motor side of the pump housing with respect to the axis of the rotary shaft. .
  • the pump housing and the motor housing are fastened and fixed radially inside the outer shape of the motor housing of the motor, the motor does not increase in the radial direction and the electric oil pump is mounted on the vehicle. Improves.
  • a sealing component is sandwiched between the fastening surfaces, and water can be prevented from entering from the outside.
  • FIG. 1 is a front view of an electric oil pump according to Embodiment 1 of the present invention.
  • FIG. 2 is a longitudinal sectional view showing a schematic configuration of the electric oil pump as seen from the XX direction in FIG.
  • FIG. 3 is a front view of the electric oil pump according to Embodiment 2 of the present invention.
  • FIG. 4 is a longitudinal sectional view showing a schematic configuration of the electric oil pump as seen from the YY direction in FIG.
  • FIG. 5 is a front view of an electric oil pump according to another configuration example of Embodiment 2 of the present invention.
  • 6 is a longitudinal sectional view showing a schematic configuration of the electric oil pump as viewed from the YY direction in FIG.
  • FIG. 7A is a longitudinal sectional view of a conventional example.
  • FIG. 7B is a cross-sectional view of a conventional example.
  • FIG. 1 is a front view of an electric oil pump according to Embodiment 1 of the present invention
  • FIG. 2 is a longitudinal sectional view showing a schematic configuration of the electric oil pump viewed from the XX direction in FIG.
  • the electric oil pump 101 includes an oil pump 201 and an electric motor (hereinafter simply referred to as a motor) 301 that drives the oil pump 201 to be adjacent to each other so that they are integrated. Is unitized.
  • a rotation drive shaft (hereinafter referred to as a rotation shaft as appropriate) 305 extends from the motor 301 to the oil pump 201.
  • the direction in which the rotating shaft 305 extends that is, the axial direction is the axial direction, and in the plane orthogonal to the axial direction, the direction extending from the center of the rotating shaft 305 is the radial direction, and the direction around the center is the circumferential direction. Will be described.
  • the side on which the oil pump 201 is disposed will be described as the front
  • the side on which the motor 301 is disposed will be the rear
  • the surface on the front side will be the front surface
  • the surface on the rear side will be the rear surface.
  • the oil pump 201 is, for example, an internal gear pump that uses gears of external teeth and internal teeth like the conventional oil pump shown in FIG. 7B. And the electric oil pump 101 provided with such an oil pump 201 is used for the hydraulic pump for transmission of a motor vehicle, etc., for example.
  • the motor 301 is a brushless motor in which a rotor rotates by three-phase AC driving using an inverter.
  • the pump plate 203 and the pump housing 204 that constitute the housing 202 of the oil pump 201 are formed of a metal nonmagnetic material such as aluminum die casting, for example. In addition, you may integrally mold with resin.
  • the motor housing 302 that houses the motor 301 has a metal frame structure formed by pressing a steel plate, which is a metal plate, with a press.
  • the bracket 303 is made of a thermoplastic resin material such as polyphenylene sulfide resin.
  • the heat radiating plate 304 is made of a nonmagnetic metal material such as aluminum die cast.
  • the housing body of the electric oil pump 101 includes the pump plate 203, the pump housing 204, the motor housing 302, the bracket 303, and the heat radiating plate 304.
  • a sealing member 102 such as an O-ring, for example, is disposed between the above components so as to be waterproof.
  • a trochoid curve type pump which is an inscribed gear type is used as the oil pump 201.
  • the oil pump 201 is used as a pump, as in FIG. 7B, as the pump rotor, the outer rotor 205 having the inner teeth of the trochoidal tooth profile on the inner peripheral side, and the outer teeth meshing with the inner teeth on the outer peripheral side.
  • the inner rotor 206 is provided.
  • the inner rotor 206 is disposed in a space formed inside the outer rotor 205, thereby forming a pump chamber 207 including a gap 207a between the two rotors.
  • the inner rotor 206 is fitted into the front end portion of the rotating shaft 305 and rotates around the rotating shaft 305.
  • the outer rotor 205 has one more internal tooth than the outer tooth of the inner rotor 206.
  • the outer rotor 205 is disposed so as to be rotatable in the pump housing 204 around the position eccentric with respect to the inner rotor 206 connected to the rotation shaft 305 as described above.
  • the outer teeth of the inner rotor 206 mesh with the inner teeth of the outer rotor 205 at a part of the entire circumference, and the outer teeth are inscribed in the inner surface of the outer rotor 205 at various locations around the entire circumference. It is configured to rotate.
  • gap 207a is formed in the location where the said external tooth and internal tooth are not fully meshing
  • the volume of the gap 207a between the inner teeth and the outer teeth of the oil pump 201 increases and decreases during one rotation of the rotating shaft 305. Will repeat. And the pump operation
  • the pump housing 204 has a thick plate shape that expands in the radial direction, and has a circular pump hole 204p opened at the front side at the center thereof.
  • the pump chamber 207 as described above is formed in the pump hole 204p.
  • a pump plate 203 is fixed to the front surface of the pump housing 204 via an O-ring 209 as the seal member 102, and the front surface of the pump chamber 207 is closed.
  • the outer rotor 205 constituting the oil pump 201 is rotatably accommodated in the pump chamber 207.
  • An inner rotor 206 that meshes with the outer rotor 205 is disposed inside the outer rotor 205.
  • the pump plate 203 is provided with the suction port 210 and the discharge port 211 shown in FIG.
  • the suction port 210 and the discharge port 211 are openings that penetrate in the axial direction, and a suction pipe (not shown) is connected to the suction port 210, and a discharge pipe (not shown) is connected to the discharge port 211. Then, oil is supplied from the suction pipe to the suction port 210 and the oil pump 201 is operated, whereby the supplied oil is discharged from the discharge port 211 to the discharge pipe.
  • the motor 301 includes a rotating rotor 306 and a stator 313 disposed outside the outer peripheral surface of the rotor 306. Further, in the motor 301, the stator 313 is fixed inside the motor housing 302 having a cylindrical shape. The front end surface of the motor housing 302 and the rear end surface of the pump housing 204 are fixed to each other. A bracket 303 is attached to the motor housing 302 so as to close the opening on the rear side of the motor housing 302.
  • the rotor 306 is formed by fixing a rotor core 307 to an intermediate portion of the rotating shaft 305 and arranging a plurality of permanent magnets 308 inside or on the outer peripheral surface of the rotor core 307.
  • a rotating shaft 305 is shared by the motor 301 and the oil pump 201.
  • the sensor magnet 312 for detecting the rotational position of the rotor 306 is held on the rotating shaft 305 via the holding ring 312a on the rear side of the rotor 306. Yes.
  • the rotating shaft 305 is supported by a pair of bearings 309 and 310 so as to be rotatable. That is, first, a cylindrical portion having a smaller diameter than the motor housing 302 is formed at the center of the rear end surface of the pump housing 204, and a cup-shaped bearing housing 212 is inserted into the cylindrical portion. Further, a bearing 309 is fitted inside the bearing housing 212. On the other hand, a cylindrical portion is also formed at the center of the bracket 303, and a cup-shaped bearing housing 311 is inserted and the bearing 310 is fitted. A portion extending to the front side of the rotating shaft 305 is supported by the bearing 309, and a rear end portion of the rotating shaft 305 is supported by the bearing 310.
  • the bearings 309 and 310 are both ball bearings which are rolling bearings, and two bearings constitute a double-supported bearing.
  • the inner rings of the bearings 309 and 310 are fixed to the rotary shaft 305 and the outer rings are fixed to the bearing housings 212 and 311.
  • the rotary shaft 305 that is rotatably supported in this way extends forward, penetrates through a hole formed in the rear wall of the pump housing 204, and enters the pump chamber 207.
  • the front end of the rotating shaft 305 is connected to the inner rotor 206.
  • an oil seal 208 is provided around the rotary shaft 305 in a portion of the pump housing 204 in front of the bearing 309 in order to prevent oil leakage.
  • the stator 313 is disposed outside the rotor 306 and faces the outer peripheral surface of the rotor 306 in the radial direction through a slight air gap.
  • the stator 313 includes a stator core 314, an insulator 316, and a coil 315.
  • the stator core 314 includes an annular yoke and a plurality of teeth (not shown) protruding inwardly from the yoke (not shown). In the present embodiment, an example having 12 teeth is given.
  • Each tooth of the stator core 314 is formed with a coil 315 in which a winding is wound via an insulator 316.
  • the insulator 316 is a resin (for example, PPS, polyphenylene sulfide) for insulating the coil 315 from the stator core 314, and is attached to each of the teeth from both ends in the axial direction.
  • a stator subassembly is formed by winding the winding of the coil 315 around one tooth.
  • a stator 313 having a three-phase coil 315 is configured by a plurality of stator subassemblies. The stator 313 is press-fitted into the motor housing 302 and is fixed to the inner periphery of the motor housing 302.
  • an inlay 302a as shown in FIG. 2 is further formed on the front side.
  • the inlay 302 a is in contact with the outer peripheral surface of the fitting portion 204 a formed on the rear side of the pump housing 204. That is, by fitting the fitting portion 204a of the pump housing 204 into the inlay 302a of the motor housing 302, they are coupled with their centers aligned. At this time, the annular top surface portion 302b on the front surface side of the motor housing 302 and the annular bottom surface portion 204b on the rear surface side of the pump housing 204 are in surface contact. Furthermore, a groove portion 204c that is recessed forward is formed in the bottom surface portion 204b of the pump housing 204. By mounting the O-ring 213 in the groove 204c, the sealing performance with the motor housing 302 is maintained.
  • the motor housing 302 and the pump housing 204 are fixed by a fastening member in a state where the top surface portion 302b of the motor housing 302 and the bottom surface portion 204b of the pump housing 204 are in surface contact.
  • a bolt hole 302d through which a bolt passes is provided in the top surface portion 302b of the motor housing 302
  • a female screw portion 204d that is a hole for screwing the bolt is provided in the bottom surface portion 204b of the pump housing 204.
  • three bolt holes 302d and female screw portions 204d are formed at equal intervals in the circumferential direction with respect to the rotation center.
  • the motor housing 302 and the pump housing 204 are firmly fixed to each other by screwing the fastening bolt 103 into the female screw portion 204d through the bolt holes 302d at these three locations.
  • the groove portion 204c and the female screw portion 204d are further formed in the bottom surface portion 204b so that the groove portion 204c is positioned radially outside the female screw portion 204d in the bottom surface portion 204b of the pump housing 204 described above. is doing.
  • these fastening bolts 103 are not visible from the pump housing 204 side in FIG. 1, and in FIG. 1, the fastening bolts 103 are indicated by dotted circles.
  • bolt holes are also formed in the outer peripheral edge of the pump plate 203.
  • a pump chamber 207 is formed by bolting a fastening bolt 203a as a fastening member to the pump housing 204 through these bolt holes.
  • four fastening bolts 203a are arranged at substantially equal intervals in the circumferential direction with respect to the rotation center.
  • a control signal for controlling the motor 301 is supplied from an external controller to the electric oil pump 101 of the present embodiment.
  • the electric oil pump 101 has a connector pin in the connector shell of the motor housing 302, and a control signal is connected to the connector pin.
  • the external controller is equipped with an inverter circuit that converts a direct current power source into alternating current and supplies a drive current to each coil 315 of the motor 301, and a control circuit unit that includes a control circuit that controls the inverter circuit.
  • the pump housing 204 of the metal oil pump 201 and the motor housing 302 of the motor 301 are arranged in the axial direction coaxially with the rotation center.
  • the fastening bolt 103 inserted from the inner side of the motor housing 302 is fastened and fixed to the female screw portion 204d of the pump housing 204 through the bolt hole 302d.
  • the bolt fastening is performed at the location where the top surface portion 302b of the motor housing 302 and the bottom surface portion 204b of the pump housing 204 are in surface contact. For this reason, the fastening bolt 103 is disposed radially inward from the outer diameter of the motor 301.
  • the axial force of the fastening bolt 103 is received by the pump housing 204.
  • an O-ring 213 mounted on the radially outer side than the position of the fastening bolt 103 is sandwiched.
  • the fitting outer peripheral surface which is the fitting portion 204a of the pump housing 204 and the fitting inner peripheral surface which is the inlay 302a of the motor housing 302 are inlay-fitted and fitted coaxially with the rotation center.
  • the electric oil pump 101 does not increase in the radial direction of the motor 301.
  • the O-ring 213 exists on the outer side in the radial direction of the fastening bolt 103, water does not enter the motor 301 from the outside.
  • the motor housing 302 and the pump housing 204 are formed of inlays, the alignment accuracy of the outer rotor 205 and inner rotor 206 in the pump chamber 207 and the stator 313 of the motor housing 302 is improved.
  • the sealing property between the pump housing 204 of the oil pump 201 and the motor housing 302 is ensured, and the outer rotor 205, the inner rotor 206, and the stator 313 in the pump chamber 207 can be easily assembled.
  • the mounting property to a vehicle improves by size reduction of the motor 301 in the radial direction.
  • FIG. 3 is a front view of the electric oil pump according to Embodiment 2 of the present invention
  • FIG. 4 is a longitudinal sectional view showing a schematic configuration of the electric oil pump viewed from the YY direction in FIG.
  • the fastening bolt 103 is inserted from the inside of the motor housing 302, the pump housing 204 and the motor housing 302 are fastened, and the fastening bolt 103 is connected.
  • the O-ring 213 is arranged on the outer side in the radial direction.
  • the pump housing 204 has a plurality of bolt through holes 201 a on its outer shell. Then, the fastening bolts 103 are inserted into the bolt through holes 201a from the outer periphery of the pump housing 204 on the pump plate 203 side, and the pump housing 204 and the motor housing 302 are fastened.
  • an example of fastening with three fastening bolts 103 is shown.
  • an O-ring 213 is arranged inside the fastening bolt 103 in the radial direction. That is, these bolt through holes 201 a are formed on the radially outer side of the O-ring 213 that is the seal member 102 and on the radially inner side of the outer diameter of the motor housing 302.
  • the motor housing 302 of the present embodiment is configured such that a non-penetrating flanged collar 317 is press-fitted into the motor frame 319 and a liquid gasket 318 is applied to the flange surface of the flanged collar 317.
  • the flanged collar 317 has a structure having a non-penetrating flange together with the female screw portion. Then, with the fastening bolts 103 respectively inserted into the bolt through holes 201a from the outer portion of the pump housing 204 on the pump plate side toward the motor housing 302, the motor frame 319 is sandwiched between the female thread portion of the flanged collar 317 and the screw. Match. In this way, the pump housing 204 and the motor housing 302 are fastened.
  • the electric oil pump 101 can be both downsized and waterproof. Furthermore, when there is a margin in the axial dimension, the thickness of the end face of the motor frame 319 is increased, and an internal thread portion is formed on the end face of the motor frame 319 to reduce the number of parts, thereby constituting the electric oil pump 101. It is possible.
  • FIG. 5 is a front view of an electric oil pump according to another configuration example of Embodiment 2 of the present invention
  • FIG. 6 is a longitudinal sectional view showing a schematic configuration of the electric oil pump viewed from the YY direction in FIG. FIG.
  • the pump plate 203 and the pump housing 204 having the shapes shown in FIGS. 5 and 6 are provided, and the fastening bolt 103 is inserted from the outer periphery of the pump housing 204 on the pump plate 203 side. 302 is fastened.
  • Such a configuration may be adopted.
  • the present invention is not limited to this, and a rotary pump using a vane drive or an external gear may be used. .
  • a rotary pump using a vane drive or an external gear may be used.
  • the inner teeth of the outer rotor 205 and the outer teeth of the inner rotor 206 are not necessarily formed in a clear so-called tooth shape, and may be protrusions, protrusions, or engaging portions.
  • the motor 301 is applied to the electric oil pump 101 .
  • the present invention is not limited to this and is applied to other products using the same motor 301. May be.
  • a motor with a brush can be applied.
  • a plurality of permanent magnets 308 are arranged and fixed inside the rotor core 307 as the rotor 306 of the motor 301 has been described.
  • a plurality of permanent magnets 308 are fixed to the outer peripheral portion of the rotor core 307.
  • the magnet 308 may be disposed, or one ring-shaped permanent magnet 308 may be fixed.
  • the controller is provided separately from the motor 301.
  • the present invention is not limited to this.
  • the controller is incorporated in the housing of the electric oil pump 101, and the substrate is mounted.
  • the structure fixed to the rear-end part of the motor housing 302 may be sufficient.
  • the electric oil pump of the present invention is useful for, for example, a hydraulic pump for automobile transmission.

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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)
  • Rotary Pumps (AREA)

Abstract

L'invention concerne une pompe à huile à entraînement électrique comprenant : une pompe à huile ayant un rotor de pompe supporté rotatif à l'intérieur d'une chambre de pompe située entre une plaque de pompe et un boîtier de pompe ; un arbre rotatif fixé au rotor de pompe ; et un moteur qui comporte un carter de moteur, est directement relié à l'arbre rotatif et entraîne en rotation le rotor de pompe. En outre, la surface d'extrémité côté moteur du boîtier de pompe et la surface d'extrémité côté boîtier de pompe du carter de moteur sont adjacentes l'une à l'autre. De plus, la pompe à huile et le moteur sont fixés axialement l'un à l'autre par une pluralité de boulons de fixation à des positions radialement à l'intérieur à la fois du diamètre externe du carter de moteur et du diamètre externe côté moteur du boîtier de pompe.
PCT/JP2017/045643 2017-01-11 2017-12-20 Pompe à huile à entraînement électrique WO2018131403A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018561887A JPWO2018131403A1 (ja) 2017-01-11 2017-12-20 電動オイルポンプ
CN201780082665.3A CN110168224A (zh) 2017-01-11 2017-12-20 电动油泵

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017002245 2017-01-11
JP2017-002245 2017-01-11

Publications (1)

Publication Number Publication Date
WO2018131403A1 true WO2018131403A1 (fr) 2018-07-19

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PCT/JP2017/045643 WO2018131403A1 (fr) 2017-01-11 2017-12-20 Pompe à huile à entraînement électrique

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JP (1) JPWO2018131403A1 (fr)
CN (1) CN110168224A (fr)
WO (1) WO2018131403A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111934485B (zh) * 2020-07-15 2023-03-03 浙江睿驰同利汽车电子有限公司 一种电子油泵
CN111934484B (zh) * 2020-07-15 2023-04-07 浙江睿驰同利汽车电子有限公司 一种盘式电子油泵

Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2003129966A (ja) * 2001-10-24 2003-05-08 Aisin Seiki Co Ltd 電動オイルポンプ
JP2007049866A (ja) * 2005-08-12 2007-02-22 Toshiba Industrial Products Manufacturing Corp キャンドモータ用樹脂製キャン及びその製造方法、射出成形金型、キャンドモータ、キャンドモータポンプ
JP2013199875A (ja) * 2012-03-26 2013-10-03 Jtekt Corp 電動オイルポンプ装置
JP2013247761A (ja) * 2012-05-25 2013-12-09 Jtekt Corp 電動オイルポンプ装置

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Publication number Priority date Publication date Assignee Title
JPS61118568A (ja) * 1984-11-14 1986-06-05 Tokyo Tatsuno Co Ltd ポンプ装置の気液分離室
CN100389284C (zh) * 2004-03-24 2008-05-21 陈杰余 一种内燃机机油泵
CN201041283Y (zh) * 2007-06-12 2008-03-26 胡方坤 双向驱动机油润滑泵
JP5760891B2 (ja) * 2011-09-17 2015-08-12 株式会社ジェイテクト 電動オイルポンプ
CA2898451A1 (fr) * 2013-03-14 2014-09-18 Allison Transmission, Inc. Pompe electrique pour un vehicule hybride
JP6385762B2 (ja) * 2014-09-03 2018-09-05 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003129966A (ja) * 2001-10-24 2003-05-08 Aisin Seiki Co Ltd 電動オイルポンプ
JP2007049866A (ja) * 2005-08-12 2007-02-22 Toshiba Industrial Products Manufacturing Corp キャンドモータ用樹脂製キャン及びその製造方法、射出成形金型、キャンドモータ、キャンドモータポンプ
JP2013199875A (ja) * 2012-03-26 2013-10-03 Jtekt Corp 電動オイルポンプ装置
JP2013247761A (ja) * 2012-05-25 2013-12-09 Jtekt Corp 電動オイルポンプ装置

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JPWO2018131403A1 (ja) 2019-11-07
CN110168224A (zh) 2019-08-23

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