Electric oil pump

Abstract

The present invention provides a rotating electric machine and a pump that have a structure that allows the ground pattern of the substrate to be grounded while suppressing an increase in size. [Solution] The electric oil pump comprises a motor unit having a rotatable rotor and a stator facing the rotor with a gap between them, a motor unit having a shaft extending in the axial direction, a circuit board electrically connected to the stator, a housing housing the motor unit, a pump mechanism connected to the motor unit, and a support member located between the circuit board and the stator. The support member is housed inside the housing and supports a terminal member electrically connecting the stator and the circuit board, and a conductive member electrically connecting the circuit board and the housing.

Description

Technical Field

[0006] , , , ,

[0001] The present invention relates to an electric oil pump. <第5項の電動オイルポンプにおいて、前記第1項に記載の回転電機は、前記筐体のうち前記基板を収容する部分が、樹脂などの絶縁性を有する材料で構成されており、前記基板のグランドパターンを接地するために、前記グランドパターンに接続された金属製の部材が、前記筐体の外部に突出しており、前記回転電機は、前記筐体のうち前記基板を収容する部分に形成された貫通孔を通して、前記金属製の部材を前記筐体の外部に突出させる構造を有することを特徴とする。

Background Art

[0002] There is known a rotating electric machine having a structure in which a ground pattern of a substrate is electrically connected to a portion of a metal housing that houses the substrate and is grounded. For example, Patent Document 1 describes a structure in which a ground pattern of a substrate and a housing are electrically connected by a screw in a drive device including an electric motor.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a rotating electric machine, a portion of the housing that houses the substrate may be made of an insulating material such as resin. In this case, in order to ground the ground pattern of the substrate, it is conceivable to project a metal member connected to the ground pattern to the outside of the housing and ground the metal member. However, in this case, there is a problem that the rotating electric machine becomes large-sized.

[0005] In view of the above circumstances, an object of the present invention is to provide a rotating electric machine and a pump having a structure capable of grounding a ground pattern of a substrate while suppressing an increase in size.

Means for Solving the Problems

[0006] <第5項の電動オイルポンプにおいて、前記第1項に記載の回転電機は、前記筐体のうち前記基板を収容する部分が、樹脂などの絶縁性を有する材料で構成されており、前記基板のグランドパターンを接地するために、前記グランドパターンに接続された金属製の部材が、前記筐体の外部に突出しており、前記回転電機は、前記筐体のうち前記基板を収容する部分に形成された貫通孔を通して、前記金属製の部材を前記筐体の外部に突出させる構造を有することを特徴とする。 One embodiment of the rotating electric machine of the present invention comprises a rotor rotatable about a central axis, a stator facing the rotor with a gap between them, a substrate electrically connected to the stator, a first metal housing opening on one axial side and housing the stator inside, a second housing fixed to one axial side of the first housing, housing the substrate inside and having insulating properties, and a conductive member electrically connecting the substrate and the first housing. The substrate has a ground pattern. The conductive member has a first connection portion electrically connected to the first housing inside the first housing and a second connection portion electrically connected to the ground pattern.

[0007] One embodiment of the pump of the present invention comprises the above-mentioned rotating electric machine and a pump mechanism connected to the rotating electric machine. [Effects of the Invention]

[0008] According to one aspect of the present invention, in a rotating electric machine and a pump, the ground pattern of the substrate can be grounded while suppressing an increase in the size of the rotating electric machine. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing the pump in the first embodiment. [Figure 2] Figure 2 is a cross-sectional view showing the pump in the first embodiment. [Figure 3] Figure 3 is an exploded perspective view showing a part of the stator, the third insulating member, and the terminal member assembly in the first embodiment. [Figure 4] Figure 4 is a cross-sectional view showing a part of the pump in the first embodiment, and is a partially enlarged view of Figure 2. [Figure 5] Figure 5 is a perspective view showing a part of the pump in the first embodiment. [Figure 6] Figure 6 is a view of a part of the pump in the first embodiment, seen from above. [Figure 7]Figure 7 is an exploded perspective view showing a part of the third insulating member and the first conductive member in the first embodiment. [Figure 8] Figure 8 is a perspective view showing the conductive member in the first embodiment. [Figure 9] Figure 9 is a perspective view showing a part of the pump in the second embodiment. [Figure 10] Figure 10 is a cross-sectional view showing a part of the pump in the third embodiment. [Figure 11] Figure 11 is a perspective view showing a part of the pump in the third embodiment. [Figure 12] Figure 12 is a perspective view showing a conductive member in the third embodiment. [Figure 13] Figure 13 is a perspective view showing a part of the pump in the fourth embodiment. [Figure 14] Figure 14 shows a part of the pump in the fourth embodiment, viewed in the direction in which the bolts that secure the conductive member are tightened into the female screw holes. [Figure 15] Figure 15 is a partial cross-sectional perspective view showing a portion of the pump in the fifth embodiment. [Modes for carrying out the invention]

[0010] Each figure shows the central axis J of the pump in each of the following embodiments, as appropriate. The central axis J is a virtual axis. In the following description, the direction in which the central axis J extends, i.e., the axial direction of the central axis J, will be simply referred to as the "axial direction," the radial direction centered on the central axis J will be simply referred to as the "radial direction," and the circumferential direction centered on the central axis J will be simply referred to as the "circumferential direction." In each figure, the Z-axis parallel to the axial direction is shown. In the following description, the side of the axial direction in which the Z-axis arrow points (+Z side) will be referred to as the "upper side," and the side of the axial direction opposite to the side in which the Z-axis arrow points (-Z side) will be referred to as the "lower side." In each of the following embodiments, the upper side corresponds to "one side of the axial direction," and the lower side corresponds to "the other side of the axial direction." Note that the upper side and lower side are merely names used to describe the arrangement of each part, etc., and the actual arrangement may be other than the arrangement indicated by these names.

[0011] <First Embodiment> The pump 100 of the present embodiment shown in FIG. 1 is, for example, an electric pump mounted on a vehicle. The fluid pumped by the pump 100 is, for example, oil. Note that the fluid pumped by the pump 100 is not particularly limited and may be a fluid other than oil such as water. As shown in FIG. 2, the pump 100 includes a rotating electric machine 10 and a pump mechanism 20 connected to the rotating electric machine 10.

[0012] The pump mechanism 20 is driven by the rotating electric machine 10 to pump the fluid. The pump mechanism 20 is housed in a pump chamber 63 provided in a first housing 61 described later. The pump mechanism 20 has an inner rotor 21 that is rotated about a central axis J by the rotating electric machine 10, and an outer rotor 2 surrounding the inner rotor 21 and meshing with the inner rotor 21.

[0013] The rotating electric machine 10 includes a rotor 30 that is rotatable about a central axis J, a stator 40 that faces the rotor 30 with a gap therebetween, a third insulating member 50, a housing 60, and a substrate 70. The rotor 30 has a shaft 31 extending in the axial direction, a rotor core 32 fixed to the outer peripheral surface of the shaft 31, and a plurality of magnets 33 fixed to the rotor core 32. In the present embodiment, the shaft 31 extends about the central axis J and is a cylindrical hollow shaft that opens at both axial ends. The lower end of the shaft 31 is connected to the inner rotor 21.

[0014] The stator 40 is located radially outside the rotor 30. The stator 40 is annular and surrounds the rotor 30. The stator 40 has a stator core 41, an insulator 42 attached to the stator core 41, and a plurality of coils 43 attached to the stator core 41 via the insulator 42.

[0015] The stator core 41 is positioned opposite the rotor core 32, with a gap between them, on the radially outer side. As shown in Figure 3, the stator core 41 has an annular core back 41a surrounding the central axis J, and a plurality of teeth 41b extending radially inward from the core back 41a. The plurality of teeth 41b are arranged at equal intervals around the circumference. Each of the plurality of coils 43 is attached to the plurality of teeth 41b via an insulator 42.

[0016] As shown in Figure 2, the insulator 42 includes a first insulating member 44 and a second insulating member 45. The first insulating member 44 is an insulating member located above the stator core 41. The second insulating member 45 is an insulating member located below the stator core 41. In this embodiment, the first insulating member 44 and the second insulating member 45 are made of resin. As shown in Figure 3, the first insulating member 44 is an annular shape surrounding the central axis J. The first insulating member 44 has an annular portion 44a located above the core back 41a and a plurality of extended portions 44b extending radially inward from the annular portion 44a. The plurality of extended portions 44b cover each of the plurality of teeth 41b from both the top and circumferential sides.

[0017] The annular portion 44a is substantially circular with respect to the central axis J. The outer diameter of the annular portion 44a is smaller than the outer diameter of the stator core 41. The radial outer surface of the annular portion 44a is located radially inward from the radial outer surface of the stator core 41. The annular portion 44a has an annular main body portion 44c, a plurality of protrusions 44d projecting radially outward from the main body portion 44c, and a plurality of claw portions 44e projecting radially outward from the main body portion 44c. The plurality of protrusions 44d are provided at the points where the plurality of extension portions 44b are connected within the annular portion 44a. The plurality of protrusions 44d are arranged at equal intervals around the circumference in the circumferential direction.

[0018] Multiple claw portions 44e are provided at intervals in the circumferential direction. The multiple claw portions 44e are arranged at equal intervals around the circumference. For example, there are three claw portions 44e. Each claw portion 44e is provided between adjacent convex portions 44d in the circumferential direction. The claw portion 44e extends in the circumferential direction. The claw portion 44e connects a pair of adjacent convex portions 44d in the circumferential direction. The radially outer end of the claw portion 44e is located radially inward from the radially outer end of the convex portion 44d. The upper end of the claw portion 44e is provided on the upper end of the outer circumferential surface of the main body portion 44c. The lower end of the claw portion 44e is located above the radially inner edge of the core back 41a.

[0019] The lower surface of the claw portion 44e is a first contact surface 44f that faces the upper surface of the core back 41a with an axial gap between them. The first contact surface 44f is a flat surface facing downwards and perpendicular to the axial direction. The radially outer surface of the claw portion 44e has an inclined surface 44g. The inclined surface 44g is located radially inward as it moves upward. The upper end of the inclined surface 44g is the upper end of the radially outer surface of the claw portion 44e.

[0020] The third insulating member 50 has insulating properties. In this embodiment, the third insulating member 50 is made of resin. The third insulating member 50 is an insulating member located above the stator core 41. In this embodiment, the third insulating member 50 is located above the first insulating member 44. The third insulating member 50 is attached to the first insulating member 44. The third insulating member 50 is an annular shape surrounding the central axis J. More specifically, the third insulating member 50 is a substantially circular annular shape centered on the central axis J.

[0021] As shown in Figure 4, the third insulating member 50 is located inside the first housing 61. The upper end of the third insulating member 50 is located below the upper end of the first housing 61. The radial outer surface of the third insulating member 50 is located radially inward from the radial inner surface of the first housing 61. In other words, a gap is provided radially between the third insulating member 50 and the first housing 61. As shown in Figure 3, the third insulating member 50 has an annular portion 51, a lead wire holding portion 52, and a claw portion 53.

[0022] The annular portion 51 is substantially circular with a central axis J at its center. The annular portion 51 is plate-shaped with its plate surface facing axially. The annular portion 51 has a hole 51a that penetrates the annular portion 51 in the axial direction. The hole 51a extends in the circumferential direction. Multiple holes 51a are provided at intervals in the circumferential direction. In this embodiment, three holes 51a are provided. The multiple holes 51a are each provided at positions that overlap with the claw body portions 53b of the multiple claw portions 53, which will be described later, when viewed in the axial direction.

[0023] The lead wire holder portion 52 is the part that holds the coil lead wire 43a drawn out from the coil 43. Multiple lead wire holder portions 52 are provided at intervals in the circumferential direction. The lead wire holder portion 52 has a recess 52a into which a terminal member 81, described later, is inserted. By inserting the terminal member 81 into the recess 52a from above, the terminal member 81 and the coil lead wire 43a are electrically connected.

[0024] The claw portion 53 extends downward from the annular portion 51. Multiple claw portions 53 are provided at intervals in the circumferential direction. In this embodiment, three claw portions 53 are provided. The claw portion 53 has a base portion 53a that extends downward from the annular portion 51, and a claw body portion 53b that protrudes radially inward from the lower end of the base portion 53a. The base portion 53a is plate-shaped with its plate surface facing radially. The base portion 53a is elastically deformable radially with its upper end connected to the annular portion 51 as a fulcrum.

[0025] As shown in Figure 4, the claw body portion 53b has a second contact surface 53c that contacts the first contact surface 44f from below. The second contact surface 53c is a flat surface facing upward and perpendicular to the axial direction. By the second contact surface 53c contacting the first contact surface 44f from below, the claw portion 53 is hooked onto the claw portion 44e from below. Each claw portion 53 is hooked onto each claw portion 44e from below, thereby fixing the third insulating member 50 to the first insulating member 44 of the insulator 42. In this embodiment, the third insulating member 50 is fixed to the insulator 42 by a snap-fit ​​structure composed of the claw portions 53 and 44e.

[0026] As shown in Figures 5 to 7, the third insulating member 50 has a conductive member support portion 54 that supports the first member 91 of the conductive member 90, which will be described later. In this embodiment, the conductive member support portion 54 is composed of a portion of the annular portion 51 on which one claw portion 53 is provided and the one claw portion 53. The conductive member support portion 54 has a groove 54a provided on the upper surface of the annular portion 51. That is, a groove 54a is provided on the upper surface of the third insulating member 50. The groove 54a extends radially and opens radially outward. In this embodiment, the groove 54a also opens radially inward. A hole portion 51a is provided in the groove 54a. On both circumferential edges of the groove 54a, there are convex portions 54b that project upward. The convex portions 54b extend radially. The convex portions 54b extend along the radial direction. One of the pair of convex portions 54b is radially divided by the hole portion 51a.

[0027] As shown in Figure 7, the conductive member support portion 54 has a through portion 54c that penetrates the radially outer end of the groove 54a in the axial direction. The through portion 54c penetrates the radially outer edge of the annular portion 51 in the axial direction. The through portion 54c opens radially outward. As a result of the provision of the through portion 54c, the radially outer edge of the portion of the annular portion 51 in which the groove 54a is provided is recessed radially inward than the radially outer edge of the portions of the annular portion 51 located on both sides of the groove 54a in the circumferential direction.

[0028] The conductive member support portion 54 has a support recess 54d provided on the radially outer surface of the claw portion 53. The support recess 54d is recessed radially inward from the radially outer surface of the base portion 53a of the claw portion 53. The support recess 54d is open on both sides in the axial direction. The radially outward-facing surface of the inner surface of the support recess 54d is smoothly connected to the radially outer surface of the portion of the annular portion 51 where the through portion 54c is provided.

[0029] The support recess 54d has a wide portion 54e and a narrow portion 54f. The wide portion 54e is the upper part of the support recess 54d. The narrow portion 54f is the lower part of the support recess 54d. The circumferential dimension of the wide portion 54e is greater than the circumferential dimension of the narrow portion 54f. The wide portion 54e protrudes more than the narrow portion 54f on both sides in the circumferential direction. The wide portion 54e opens on the upper side and on one side in the circumferential direction. The narrow portion 54f is connected to the lower side of the wide portion 54e. The narrow portion 54f opens on the lower side.

[0030] As shown in Figure 2, the housing 60 houses the pump mechanism 20, rotor 30, stator 40, third insulating member 50, and substrate 70. The housing 60 has a first housing 61 and a second housing 62. In other words, the rotating electric machine 10 comprises a first housing 61 and a second housing 62.

[0031] The first housing 61 houses the pump mechanism 20, rotor 30, stator 40, and third insulating member 50. The first housing 61 is made of metal. The first housing 61 is cylindrical with an opening on the top. As shown in Figure 1, the first housing 61 is substantially cylindrical with a central axis J. The first housing 61 has a first housing body portion 61a and a mounting portion 61b.

[0032] The first housing body 61a is substantially cylindrical with respect to the central axis J. As shown in Figure 2, the first housing body 61a houses the rotor 30, the stator 40, and the third insulating member 50 inside. The first housing body 61a has a stator housing section 61c, a pump mechanism housing section 61d, and a pump cover 61e. The stator housing section 61c and the pump mechanism housing section 61d are part of the same single component. The pump cover 61e is separate from the stator housing section 61c and the pump mechanism housing section 61d.

[0033] The stator housing 61c is substantially cylindrical, with a central axis J at its center and opening upwards. The stator housing 61c houses the stator 40 inside. The outer surface of the stator core 41 is fixed to the inner surface of the stator housing 61c. The stator housing 61c has a bottom wall portion 61h located on its lower side. The bottom wall portion 61h is provided with a hole 61i through which the shaft 31 passes in the axial direction.

[0034] The pump mechanism housing 61d is connected to the lower side of the stator housing 61c. The outer diameter of the pump mechanism housing 61d is smaller than the outer diameter of the stator housing 61c. The pump mechanism housing 61d has a housing recess 61g that is recessed upward from the lower surface of the pump mechanism housing 61d. At least a portion of the opening on the lower side of the housing recess 61g is covered by the pump cover 61e, thereby forming a pump chamber 63 that houses the pump mechanism 20. The lower end of the shaft 31, which is passed through the hole 61i, is inserted into the pump chamber 63. The lower end of the shaft 31 is connected to the inner rotor 21 within the pump chamber 63.

[0035] As shown in Figure 1, the mounting portion 61b protrudes radially outward from the first housing body portion 61a. More specifically, the mounting portion 61b protrudes radially outward from the outer circumferential surface of the upper portion of the stator housing portion 61c. The mounting portion 61b and the stator housing portion 61c are part of the same single component. Multiple mounting portions 61b are provided spaced apart in the circumferential direction. In this embodiment, a pair of mounting portions 61b are provided, straddling the central axis J in the radial direction. The mounting portion 61b has a mounting hole 61f that penetrates the mounting portion 61b in the axial direction.

[0036] The mounting portion 61b is the part that is attached to the equipment on which the pump 100 is mounted. In this embodiment, the mounting portion 61b is fixed to the housing of the equipment on which the pump 100 is mounted by tightening a bolt passed through the mounting hole 61f into the housing of the equipment. The housing of the equipment is, for example, made of metal and is electrically connected to the metal first housing 61.

[0037] The second housing 62 is fixed to the upper side of the first housing 61. The second housing 62 closes the upper opening of the first housing 61. The second housing 62 is insulating. In this embodiment, the second housing 62 is made of resin. The second housing 62 is cylindrical, surrounding the central axis J. More specifically, the second housing 62 is substantially cylindrical, with the central axis J as its center and opening to the lower side. As shown in Figure 2, the second housing 62 houses the substrate 70 inside. The second housing 62 has a lid member 62a and a support member 64. In this embodiment, the lid member 62a and the support member 64 are separate from each other.

[0038] The lid member 62a covers the substrate 70 from above. The lid member 62a is substantially cylindrical with an opening on the bottom. As shown in Figure 1, the lid member 62a has a top wall portion 62b, a peripheral wall portion 62c, a flange portion 62h, a fixing claw portion 62d, and a connector portion 62e. The top wall portion 62b is substantially disc-shaped, expanding radially. As shown in Figure 2, the top wall portion 62b covers the substrate 70 from above. The peripheral wall portion 62c protrudes downward from the radial outer edge of the top wall portion 62b. The peripheral wall portion 62c is substantially cylindrical with a central axis J as its center. The substrate 70 is positioned radially inside the peripheral wall portion 62c. The flange portion 62h protrudes radially outward from the lower end of the peripheral wall portion 62c. The flange portion 62h is substantially annular, surrounding the central axis J. The flange portion 62h is plate-shaped with its surface facing axially.

[0039] The fixing claw portion 62d protrudes downward from the radial outer edge of the flange portion 62h. The fixing claw portion 62d is located radially outward from the upper end of the first housing 61. The fixing claw portion 62d has a base portion 62f that protrudes downward from the radial outer edge of the flange portion 62h, and a claw body portion 62g that protrudes radially inward from the lower end of the base portion 62f. The claw body portion 62g is inserted into a fixing groove 61j provided on the outer circumferential surface of the first housing 61 and is hooked from below onto the upper part of the inner surface of the fixing groove 61j. In this way, the fixing claw portion 62d is fixed to the first housing 61. As shown in Figure 1, multiple fixing claw portions 62d are provided at intervals in the circumferential direction. The second housing 62 is fixed to the first housing 61 by multiple fixing claw portions 62d.

[0040] The connector section 62e is provided on the top wall section 62b. As shown in Figure 2, the connector section 62e protrudes from the top wall section 62b on both sides in the axial direction. Although not shown in the figure, the connector section 62e holds a plurality of terminals. These terminals are electrically connected to the circuit board 70. Connectors of external devices are connected to the connector section 62e.

[0041] In this embodiment, the support member 64 corresponds to the "bottom" located between the substrate 70 and the stator 40 in the axial direction. The support member 64 is fitted radially inward of the lower end of the peripheral wall portion 62c of the lid member 62a. As shown in Figure 3, the support member 64 is annular in shape surrounding the central axis J. More specifically, the support member 64 is substantially annular in shape centered on the central axis J. In this embodiment, the support member 64 is a member that holds the terminal member 81. The support member 64 is manufactured, for example, by insert molding using the terminal member 81 and the conductive member 90 (described later) as insert members. The terminal member assembly 80 is composed of the support member 64, the terminal member 81 and the conductive member 90.

[0042] The support member 64 has a first annular portion 64a, a second annular portion 64b, a flange portion 64c, a substrate support portion 64f, a projection portion 64g, a terminal holding portion 64h, and a conductive member holding portion 64i. The first annular portion 64a is substantially annular with respect to the central axis J. As shown in Figure 2, the first annular portion 64a is fitted radially inward at the lower end of the peripheral wall portion 62c. A seal groove 64d into which a seal member 65a is fitted is provided on the outer circumferential surface of the first annular portion 64a. The seal groove 64d is annular surrounding the central axis J. In this embodiment, the seal member 65a is an O-ring. The seal member 65a seals the space between the outer circumferential surface of the first annular portion 64a and the inner circumferential surface of the peripheral wall portion 62c.

[0043] The second annular portion 64b is substantially circular with respect to the central axis J. The second annular portion 64b is connected to the lower side of the first annular portion 64a. The outer diameter of the second annular portion 64b is larger than the outer diameter of the first annular portion 64a. The inner diameter of the second annular portion 64b is larger than the inner diameter of the first annular portion 64a. The second annular portion 64b is fitted into the upper opening of the first housing 61. A seal groove 64e into which a seal member 65b is fitted is provided on the outer circumferential surface of the second annular portion 64b. The seal groove 64e is circular surrounding the central axis J. In this embodiment, the seal member 65b is an O-ring. The seal member 65b seals the space between the outer circumferential surface of the second annular portion 64b and the inner circumferential surface at the upper end of the first housing 61.

[0044] The flange portion 64c protrudes radially outward from the lower end of the first annular portion 64a. The flange portion 64c is substantially annular with respect to the central axis J. The flange portion 64c is plate-shaped with its plate surface facing axially. The flange portion 64c is located between the flange portion 62h of the lid member 62a and the upper end of the first housing 61 in the axial direction. The flange portion 64c is sandwiched in the axial direction, in contact with the flange portion 62h and the upper end of the first housing 61.

[0045] As shown in Figure 3, the substrate support portion 64f protrudes upward from the upper surface of the first annular portion 64a. In this embodiment, the substrate support portion 64f is substantially rectangular in shape, elongated in the circumferential direction when viewed in the axial direction. Multiple substrate support portions 64f are provided at intervals in the circumferential direction. In this embodiment, three substrate support portions 64f are provided. The multiple substrate support portions 64f are arranged at equal intervals around the entire circumference in the circumferential direction. As shown in Figure 2, the upper surface of the substrate support portion 64f is in contact with the lower surface of the radial outer edge of the substrate 70. As a result, the support member 64 supports the substrate 70 from below.

[0046] As shown in Figure 3, the projection 64g protrudes upward from the radial inner edge of the first annular portion 64a. The projection 64g protrudes above the substrate support portion 64f. The projection 64g is substantially cylindrical. Multiple projections 64g are provided at intervals in the circumferential direction. In this embodiment, four projections 64g are provided. As shown in Figure 4, the projections 64g are passed through holes 70a provided in the substrate 70 in the axial direction. By passing each of the multiple projections 64g through the holes 70a, the substrate 70 is positioned radially with respect to the support member 64.

[0047] As shown in Figure 3, the terminal holding portion 64h protrudes radially inward from the inner circumferential surface of the first annular portion 64a. The terminal holding portion 64h holds the terminal member 81. In this way, the support member 64 supports the terminal member 81. Multiple terminal holding portions 64h are provided at intervals in the circumferential direction. In this embodiment, three terminal holding portions 64h are provided. The multiple terminal holding portions 64h are arranged at equal intervals around the circumference. The circumferential positions of the multiple terminal holding portions 64h are the same as the circumferential positions of the multiple substrate support portions 64f. Each terminal holding portion 64h is located radially inward of each substrate support portion 64f.

[0048] The conductive member holding portion 64i protrudes radially inward from the inner circumferential surface of the first annular portion 64a. The conductive member holding portion 64i is located between adjacent terminal holding portions 64h in the circumferential direction. The conductive member holding portion 64i holds the second member 92, which will be described later. The radially inward end of the conductive member holding portion 64i is located radially inward than the radially inward end of the terminal holding portion 64h.

[0049] Each terminal member 81, held by each terminal holding portion 64h, is partially embedded in the terminal holding portion 64h. The terminal members 81 protrude from the terminal member 81 on both sides in the axial direction. The terminal members 81 are made of metal. The terminal member 81 has a base portion 81a, a coil connection portion 81b, and a substrate connection portion 81c. The base portion 81a is plate-shaped with its surface facing radially. The base portion 81a is held by the terminal holding portion 64h.

[0050] The coil connection portion 81b is connected to the lower end of the base portion 81a and protrudes below the terminal holding portion 64h. The coil connection portion 81b is plate-shaped with its surface facing radially. The coil connection portion 81b is inserted from above into the recess 52a of the third insulating member 50 and is electrically connected to the coil lead wire 43a held within the recess 52a. As a result, the terminal member 81 is electrically connected to the coil lead wire 43a.

[0051] The substrate connection portion 81c protrudes upward from the upper edge of the base portion 81a. In this embodiment, a pair of substrate connection portions 81c are provided spaced apart in the circumferential direction. As shown in Figure 2, the substrate connection portion 81c is passed axially through a hole 70b provided in the substrate 70. In this embodiment, the substrate connection portion 81c is a press-fit terminal that is electrically connected to the substrate 70 by being press-fitted into the hole 70b. The coil connection portion 81b is electrically connected to the coil lead wire 43a, and the substrate connection portion 81c is electrically connected to the substrate 70, thereby electrically connecting the substrate 70 to the stator 40 via the terminal member 81.

[0052] In this embodiment, the substrate 70 is plate-shaped with its surface oriented axially. The substrate 70 extends radially. The radial outer edge of the substrate 70 is in contact with the upper surface of the substrate support portion 64f of the support member 64. The substrate 70 is a printed circuit board with a wiring pattern (not shown) provided on it. In this embodiment, the substrate 70 is a multilayer substrate. Multiple electronic components 73 are mounted on the substrate 70. Although not shown, the substrate 70 is provided with an inverter circuit that supplies power to the stator 40. The inverter circuit supplies current to the coil 43 via a terminal member 81 and coil lead wire 43a connected to the substrate 70. This causes the rotor 30 to rotate and drives the pump mechanism 20.

[0053] As shown in Figure 4, the substrate 70 has a ground pattern 72. The ground pattern 72 is, for example, a solid pattern made of copper foil. In this embodiment, the ground pattern 72 constitutes one of the multiple layers that make up the substrate 70, which is a multilayer substrate. The ground pattern 72 is, for example, a layer located between the uppermost layer and the lowermost layer of the multiple layers that make up the substrate 70 in the axial direction. The ground pattern 72 may be provided on the substrate 70 in any way. The substrate 70 has a grounding hole 71 that penetrates the substrate 70 in the axial direction. A plated portion 71a is provided on the inner surface of the grounding hole 71. The plated portion 71a is, for example, copper plating. The plated portion 71a is electrically connected to the ground pattern 72.

[0054] The rotating electric machine 10 includes a conductive member 90 that electrically connects the substrate 70 and the first housing 61. The conductive member 90 is electrically conductive. The conductive member 90 is made of metal. In this embodiment, the conductive member 90 has a first member 91 and a second member 92. The first member 91 and the second member 92 are separate entities. In this embodiment, the first member 91 and the second member 92 are sheet metal members. The first member 91 and the second member 92 are in axial contact with each other.

[0055] As shown in Figure 5, in this embodiment, the first member 91 is supported by the third insulating member 50. More specifically, the first member 91 is supported by the conductive member support portion 54. As shown in Figures 7 and 8, the first member 91 has a supported portion 91a, an elastic portion 91b, a first connecting portion 91c, and a protruding portion 91d. In other words, the conductive member 90 has a supported portion 91a, an elastic portion 91b, a first connecting portion 91c, and a protruding portion 91d.

[0056] The supported portion 91a is the part supported by the third insulating member 50. The supported portion 91a has an axial contact portion 91e and a radial contact portion 91f. The axial contact portion 91e is plate-shaped with its surface facing axially. The axial contact portion 91e has a pair of arms 91g and a connecting portion 91h. The pair of arms 91g extend radially and are spaced apart in the circumferential direction. The connecting portion 91h extends in a direction perpendicular to the radial direction in which the pair of arms 91g extend and connects the radially inner ends of the pair of arms 91g.

[0057] As shown in Figure 5, the axial contact portion 91e is fitted into the groove 54a from above. In other words, a part of the supported portion 91a is fitted into the groove 54a. This causes the supported portion 91a to catch on the circumferential inner surface of the groove 54a, suppressing circumferential displacement of the first member 91 relative to the third insulating member 50. Alternatively, the entire supported portion 91a may be fitted into the groove 54a. In this embodiment, a pair of arm portions 91g are fitted into the groove 54a. The radially inner ends of the pair of arm portions 91g protrude radially inward from the radially inner edge of the annular portion 51 through the radially inner opening of the groove 54a. The pair of arm portions 91g are in contact with the lower bottom surface of the groove 54a. As a result, the axial contact portion 91e contacts the third insulating member 50 in the axial direction, and the supported portion 91a contacts the third insulating member 50 in the axial direction. The axial contact portion 91e is supported from below by the lower bottom surface of the groove 54a. In other words, the first member 91 is supported from below by the third insulating member 50. As a result, the first member 91 is positioned in the axial direction by the third insulating member 50. The connecting portion 91h is located radially inward from the radial inner edge of the annular portion 51.

[0058] The radial contact portion 91f extends circumferentially and connects the radially outer ends of the pair of arm portions 91g. The radial contact portion 91f is plate-shaped with its surface facing radially. The radial contact portion 91f protrudes downward from the radially outer ends of the pair of arm portions 91g. The radial contact portion 91f is inserted into the wide portion 54e of the support recess 54d. The radial contact portion 91f is in contact with the radially outward-facing surface of the inner surface of the wide portion 54e. As a result, the radial contact portion 91f is in radial contact with the third insulating member 50, and the supported portion 91a is in radial contact with the third insulating member 50. In other words, the first member 91 is in contact with the radially outer surface of the third insulating member 50. As a result, the first member 91 is radially positioned by the third insulating member 50.

[0059] The elastic portion 91b is a portion that can be elastically deformed in the axial direction. The elastic portion 91b protrudes upward from the radially inner end of the supported portion 91a. In this embodiment, the elastic portion 91b protrudes upward from the circumferential center of the radially inner edge of the connecting portion 91h. As shown in Figure 8, the elastic portion 91b has a curved portion 91i, a third extended portion 91j, and an elastic contact portion 91k. In other words, the conductive member 90 has a curved portion 91i, a third extended portion 91j, and an elastic contact portion 91k.

[0060] The curved portion 91i is the part connected to the supported portion 91a. The curved portion 91i is a plate-like shape that extends in a curved arc that is convex radially inward when viewed in the circumferential direction. In other words, the curved portion 91i is curved in a direction that is convex in the direction intersecting the axial direction. This makes it easier to elastically deform the elastic portion 91b in the axial direction. The curved portion 91i may also be a plate-like shape that extends axially from the supported portion 91a and then curves in a curved arc that is convex radially outward when viewed in the circumferential direction.

[0061] The third extension portion 91j is a rectangular plate shape that extends diagonally upward and radially outward from the upper end of the curved portion 91i. The elastic contact portion 91k is connected to the upper and radially outward end of the curved portion 91i. The elastic contact portion 91k is a plate shape that curves and extends in an arc shape that is convex upward when viewed in the circumferential direction. The elastic contact portion 91k is in contact with the second member 92. When the first member 91 and the second member 92 are brought into contact, the elastic contact portion 91k is pushed downward by the second member 92, causing the curved portion 91i to elastically deform, and the third extension portion 91j and the elastic contact portion 91k are elastically displaced downward with the curved portion 91i as the fulcrum. In this embodiment, when in contact with the second member 92, the elastic portion 91b is elastically deformed downward in the axial direction, and an upward force is applied to the second member 92. In this way, the first member 91 and the second member 92 come into contact with each other via the elastic portion 91b, which allows the axial displacement between the first member 91 and the second member 92 to be absorbed by the elastic deformation of the elastic portion 91b, and the elastic force of the elastic portion 91b can be used to bring the first member 91 and the second member 92 into suitable contact while pressing them against each other.

[0062] The first connecting portion 91c protrudes downward from the radially outer end of the supported portion 91a. More specifically, the first connecting portion 91c protrudes downward from the circumferential center of the lower edge of the radial contact portion 91f. As shown in Figure 4, the first connecting portion 91c is located radially between the radially outer surface of the third insulating member 50 and the radially inner surface of the first housing 61. In this embodiment, the first connecting portion 91c is located radially between the radially outer surface of the claw portion 53 and the inner circumferential surface of the stator housing portion 61c. The first connecting portion 91c has a first extension portion 91m, an axially curved portion 91p, a second extension portion 91r, and a contact projection portion 91s.

[0063] As shown in Figure 5, the first extension portion 91m extends downward from the radial contact portion 91f. The first extension portion 91m is a rectangular plate with its surface facing radially and elongated in the axial direction. The first extension portion 91m is inserted into the narrow portion 54f of the support recess 54d. This allows the first extension portion 91m to catch on the inner surfaces on both sides of the narrow portion 54f in the circumferential direction, thereby preventing the circumferential position of the first connection portion 91c from shifting. The first extension portion 91m is in contact with the radially outward-facing surface of the inner surface of the narrow portion 54f. As a result, the first connection portion 91c is in radial contact with the third insulating member 50.

[0064] The axially curved portion 91p is a plate-like shape that curves and extends in an arc shape that is convex downwards when viewed in the circumferential direction. The axially curved portion 91p is positioned opposite the upper side of the core back 41a with a gap between them. The presence of the axially curved portion 91p allows the first connecting portion 91c to be elastically deformable in the radial direction.

[0065] The second extension 91r extends upward from the radially outer end of the axially curved portion 91p. The second extension 91r is plate-shaped with its surface facing radially. The second extension 91r is located radially outward from the first extension 91m. The second extension 91r faces the first extension 91m radially with a gap between them. The upper edge of the second extension 91r is arc-shaped, convex upward when viewed radially. The upper end of the second extension 91r is located lower than the upper end of the first extension 91m.

[0066] The contact projection 91s protrudes radially outward from the second extension portion 91r. In this embodiment, the contact projection 91s is a hemispherical shell shape that protrudes radially outward. The contact projection 91s is made, for example, by crimping a part of the second extension portion 91r radially outward. As shown in Figures 4 and 6, the contact projection 91s is in contact with the inner circumferential surface of the stator housing portion 61c. In other words, the first connection portion 91c is in contact with the radially inner surface of the first housing 61. As a result, the first connection portion 91c is electrically connected to the first housing 61 inside the first housing 61.

[0067] The first connecting portion 91c is in contact with the first housing 61 in a state in which the second extending portion 91r and the contact projection 91s are elastically deformed in a direction in which they are elastically displaced radially inward, with the axially curved portion 91p as a fulcrum. This allows the contact projection 91s to be pressed against the first housing 61 from the radially inward side, and the first connecting portion 91c can be suitably electrically connected to the first housing 61. Thus, according to this embodiment, by configuring the first connecting portion 91c to be elastically deformable in the radial direction, located radially between the radially outer surface of the third insulating member 50 and the radially inner surface of the first housing 61, and in contact with the radially inner surface of the first housing 61, the first connecting portion 91c can be suitably electrically connected to the first housing 61.

[0068] As shown in Figure 5, the protrusion 91d protrudes upward from the radially outer end of the supported portion 91a. Therefore, when assembling the first member 91, the protrusion 91d can be grasped with a jig or the like. This makes it easier to insert the first connecting portion 91c of the first member 91 into the radial gap between the third insulating member 50 and the first housing 61 from above. Thus, the first member 91 can be assembled more easily.

[0069] In this embodiment, the protrusion 91d protrudes upward from the circumferential center of the upper edge of the radial contact portion 91f. The protrusion 91d is a substantially rectangular plate shape with its plate surface facing radially and elongated in the axial direction. The upper end of the protrusion 91d is located below the upper end of the elastic portion 91b. The protrusion 91d is located radially outward from the elastic portion 91b. The protrusion 91d is located above the first connecting portion 91c and is positioned to overlap with the first connecting portion 91c when viewed in the axial direction. Therefore, when assembling the first member 91 by grasping the protrusion 91d, the first connecting portion 91c, located below the protrusion 91d, can be more easily inserted from above into the radial gap between the third insulating member 50 and the first housing 61. In this embodiment, the protrusion 91d is positioned to overlap with the first extension portion 91m of the first connecting portion 91c when viewed in the axial direction.

[0070] The second member 92 is located above the first member 91 and is in axial contact with the first member 91. As shown in Figure 4, in this embodiment, the second member 92 penetrates the support member 64 in the axial direction. As a result, the conductive member 90 penetrates the support member 64, which acts as the bottom, in the axial direction. A portion of the second member 92 is embedded in the conductive member holding portion 64i. As a result, the second member 92 is held by the support member 64. The second member 92 has a first wall portion 92a, a second wall portion 92b, and a second connecting portion 92c. In other words, the conductive member 90 has a first wall portion 92a, a second wall portion 92b, and a second connecting portion 92c.

[0071] The first wall portion 92a is a rectangular plate with its surface oriented axially. The first wall portion 92a is embedded in the lower surface of the conductive member holder portion 64i. The lower surface of the first wall portion 92a is positioned at the same axial location as the lower surface of the conductive member holder portion 64i and is exposed to the outside of the conductive member holder portion 64i. The elastic contact portion 91k of the first member 91 is in contact with the lower surface of the first wall portion 92a. The upper surface of the first wall portion 92a is in contact with the lower surface 64j of the conductive member holder portion 64i. The lower surface 64j of the conductive member holder portion 64i supports the first wall portion 92a, which is subjected to a reaction force of elastic force caused by the elastic deformation of the elastic portion 91b of the first member 91 downward in the axial direction.

[0072] The second wall portion 92b protrudes upward from the radially outer end of the first wall portion 92a. The second wall portion 92b is plate-shaped with its surface facing radially. As shown in Figure 5, the second wall portion 92b has a wide portion 92d connected to the radially outer end of the second wall portion 92b, and a narrow portion 92e connected to the upper side of the wide portion 92d. The circumferential dimension of the wide portion 92d is the same as the circumferential dimension of the first wall portion 92a, and is larger than the circumferential dimension of the narrow portion 92e. The narrow portion 92e extends upward from the circumferential center of the wide portion 92d.

[0073] The second connecting portion 92c extends upward from the upper end of the second wall portion 92b. In this embodiment, the second connecting portion 92c extends upward from the circumferential center of the upper end of the narrow portion 92e. In this embodiment, the second connecting portion 92c is an elongated, roughly rectangular prism shape extending in the axial direction. The second connecting portion 92c is passed axially through the grounding hole portion 71 provided in the substrate 70. The second connecting portion 92c is in contact with the plated portion 71a provided on the inner surface of the grounding hole portion 71. As a result, the second connecting portion 92c is electrically connected to the ground pattern 72 via the plated portion 71a. Therefore, the conductive member 90 can electrically connect the ground pattern 72 of the substrate 70 to the first housing 61. Thus, the second housing 62 housing the substrate 70 can be made of an insulating material such as resin, while the ground pattern 72 can be grounded via the conductive member 90 and the first housing 61. This stabilizes the reference potential of the ground pattern 72 and suppresses noise caused by the current flowing through the substrate 70.

[0074] Furthermore, according to this embodiment, the first connection portion 91c is electrically connected to the first housing 61 from inside the first housing 61. Therefore, there is no need to have a member for grounding the ground pattern 72 of the substrate 70 protrude from the outside of the second housing 62, and the size of the rotating electric machine 10 can be suppressed. Thus, according to this embodiment, the ground pattern 72 of the substrate 70 can be grounded while suppressing the size of the rotating electric machine 10. In addition, compared to the case in which a member for grounding the ground pattern 72 protrudes from the outside of the second housing 62 and is connected to the first housing 61 from the outside, the rotating electric machine 10 can be assembled more easily. Also, unlike the case in which the substrate 70 is directly fixed to the metal housing by screws, there is no need to place an insulating member between the substrate 70 and the second housing 62. Furthermore, problems such as the fixing of the substrate 70 loosening due to deformation due to aging deterioration of the insulating member can be suppressed.

[0075] Furthermore, according to this embodiment, the first housing 61 has a mounting portion 61b that protrudes radially outward from the first housing body portion 61a. Therefore, by fixing the mounting portion 61b to the housing of the equipment to which the rotating electric machine 10 is mounted, the ground pattern 72 can be electrically connected to the housing of the equipment via the conductive member 90, the first housing body portion 61a, and the mounting portion 61b. This allows the ground pattern 72 to be grounded more effectively.

[0076] Furthermore, according to this embodiment, the conductive member 90 penetrates the support member 64, which serves as the bottom, in the axial direction. Therefore, by providing the support member 64 as the bottom to support the terminal member 81, it is possible to facilitate the electrical connection between the stator 40 and the substrate 70, while the conductive member 90 can suitably electrically connect the substrate 70 and the first housing 61.

[0077] Furthermore, according to this embodiment, the conductive member 90 includes a first member 91 having a first connecting portion 91c, and a second member 92 having a second connecting portion 92c and contacting the first member 91 in the axial direction. Therefore, it is possible to adopt an assembly method in which the second member 92 is assembled after the first member 91 has been assembled. As a result, during the period between the assembly of the first member 91 and the assembly of the second member 92, the conductive member 90 does not protrude significantly upward in the axial direction from inside the first housing 61 compared to when the conductive member 90 is a single member. Therefore, the assembly process after the assembly of the first member 91 can be made easier. Thus, the ease of assembly of the rotating electric machine 10 and the pump 100 can be improved.

[0078] Furthermore, according to this embodiment, the second member 92 penetrates the support member 64 in the axial direction and is held by the support member 64. Therefore, the second member 92 can be assembled by assembling the support member 64 with the second member 92 in place. This allows the second member 92 to be assembled and brought into contact with the first member 91 without connecting the second connecting portion 92c of the second member 92 to the substrate 70. Thus, before performing the work of connecting the second member 92 and the substrate 70, a continuity check can be performed to confirm whether the first member 91 and the second member 92 are electrically connected.

[0079] As shown in Figure 5, the second connector 92c has a press-fit portion 92f that bulges in the circumferential direction. The press-fit portion 92f is located in the axial center of the second connector 92c. The press-fit portion 92f is provided with a hole 92g that penetrates the press-fit portion 92f radially. The press-fit portion 92f is elastically deformable in a direction that compresses the hole 92g. In this embodiment, the second connector 92c is fixed to the substrate 70 by press-fitting the press-fit portion 92f into the grounding hole 71. The second connector 92c is a press-fit terminal. The press-fit portion 92f is in contact with the plated portion 71a. As shown in Figure 4, the upper end of the second connector 92c is inserted into a recess 62i that is recessed upward from the lower end of the connector portion 62e.

[0080] The worker assembling the pump 100 described above places the stator 40 inside the first housing 61, and then inserts the third insulating member 50 into the first housing 61 from the upper opening. The worker fixes the third insulating member 50 to the stator 40 by a snap-fit ​​structure in which the claw portion 53 of the third insulating member 50 is hooked onto the claw portion 44e of the insulator 42. The worker holds the coil lead wire 43a drawn out from the coil 43 in the recess 52a of the lead wire holding portion 52 of the third insulating member 50, which is fixed to the stator 40. The worker grasps the protruding portion 91d with a jig and inserts the first member 91 into the first housing 61 from the upper opening. The worker attaches the first member 91 to the third insulating member 50 by inserting the first connecting portion 91c between the radial outer surface of the third insulating member 50 and the radial inner surface of the first housing 61. When the first connecting portion 91c is inserted, the first connecting portion 91c comes into contact with the radially outer surface of the third insulating member 50 and the radially inner surface of the first housing 61, and is pressed by the radially outer surface of the third insulating member 50 and the radially inner surface of the first housing 61, causing it to elastically deform radially.

[0081] Next, the worker inserts the terminal member assembly 80 into the first housing 61 from the upper opening and fits it into the upper end of the first housing 61. As a result, the coil connection portion 81b of the terminal member 81 held by the support member 64 is electrically connected to the coil lead wire 43a, and the second member 92 held by the support member 64 is electrically connected to the first member 91. In this state, an electrical test is performed between the second member 92 and the first housing 61 to confirm whether the first member 91 and the second member 92 are electrically connected before placing the circuit board 70.

[0082] Next, the worker inserts and positions the rotor 30 into the first housing 61. Note that the rotor 30 may be positioned before positioning the terminal member assembly 80 into the first housing 61. Next, the worker positions the substrate 70 above the terminal member assembly 80. At this time, the worker inserts each projection 64g into each hole 70a of the substrate 70 to position the substrate 70 radially, and then moves the substrate 70 closer to the substrate support 64f. By moving the substrate 70 until it contacts the substrate support 64f, the substrate connection part 81c can be suitably press-fitted into the hole 70b of the substrate 70, while the second connection part 92c can be suitably press-fitted into the grounding hole 71 of the substrate 70. Thus, in this embodiment, the terminal member 81 and the conductive member 90 can be easily connected to the substrate 70 simply by bringing the substrate 70 closer to the terminal member assembly 80 from above. Next, the worker hooks the fixing claw portion 62d into the fixing groove 61j of the first housing 61 and fixes the cover member 62a to the first housing 61. The rotating electric machine 10 is then assembled.

[0083] The following describes embodiments that differ from those described above. In the following descriptions of each embodiment, components similar to those described in the section above may be omitted from the description by using the same reference numerals as appropriate. Also, for parts corresponding to the components described in the section above each embodiment, the same name and different reference numerals will be used to explain the differences from the above-described configuration, while the explanation of similar components may be omitted. Note that, within the scope of consistency, components similar to those described in the section above each embodiment may be adopted as components whose description is omitted.

[0084] <Second Embodiment> As shown in Figure 9, in the rotating electric machine 210 of the pump 200 of this embodiment, the conductive member 290 has a first member 291 and a second member 92. The first member 291 has a supported portion 291a, an elastic portion 91b, and a first connecting portion 291c. The supported portion 291a is a substantially rectangular plate shape that extends radially and has its plate surface facing axially. The supported portion 291a is supported from below by an annular portion 51.

[0085] The first connecting portion 291c has an extended portion 291m, a connecting portion 291t, and a pair of contact protrusions 291u. The extended portion 291m is a substantially rectangular plate shape that extends diagonally downward and radially inward from the radially outer end of the supported portion 291a. The extended portion 291m is located radially outward and away from the claw portion 253 of the third insulating member 250. The third insulating member 250 is the same as the third insulating member 50 of the first embodiment, except that a support recess 54d is not provided on the radially outer surface of the base portion 253a of the claw portion 253.

[0086] The connecting portion 291t is connected to the lower end of the extension portion 291m. The connecting portion 291t is plate-shaped with its surface facing radially. The connecting portion 291t protrudes circumferentially from the lower end of the extension portion 291m on both sides. The connecting portion 291t is in contact with the radially outer surface of the base portion 253a of the claw portion 253. As a result, the first member 291 is in contact with the radially outer surface of the third insulating member 250.

[0087] The pair of contact protrusions 291u are connected to both sides of the connecting portion 291t in the circumferential direction. The pair of contact protrusions 291u extend circumferentially from the connecting portion 291t. The pair of contact protrusions 291u are plate-like in shape, extending in a substantially V-shape that protrudes radially outward when viewed in the axial direction. The radially outward tops of the pair of contact protrusions 291u, which are substantially V-shaped when viewed in the axial direction, are in contact with the inner circumferential surface of the first housing 61. As a result, the first connecting portion 291c is electrically connected to the first housing 61 inside the first housing 61. Therefore, the ground pattern 72 of the substrate 70 is electrically connected to the metal first housing 61 by the conductive member 290.

[0088] <Third Embodiment> As shown in Figures 10 and 11, in the rotating electric machine 310 of the pump 300 of this embodiment, the second housing 362 has a bottom portion 364, a lid portion 362a, and a cylindrical portion 362c. The bottom portion 364, the lid portion 362a, and the cylindrical portion 362c are separate parts. The cylindrical portion 362c is cylindrical with openings on both sides in the axial direction. The lid portion 362a is fixed to the upper side of the cylindrical portion 362c and closes the upper opening of the cylindrical portion 362c. The lid portion 362a and the cylindrical portion 362c constitute a lid member substantially the same as the lid member 62a of the first embodiment. As shown in Figure 11, the cylindrical portion 362c has a substrate support portion 362j that supports the substrate 70 from below, and a projection portion 362k that protrudes upward from the substrate support portion 362j. The projection portion 362k is passed through a hole provided in the substrate 70 in the axial direction.

[0089] As shown in Figure 10, the bottom portion 364 has a bottom body portion 366 and a coil lead wire support portion 367. The bottom body portion 366 and the coil lead wire support portion 367 are separate parts. The coil lead wire support portion 367 is fixed to the upper side of the bottom body portion 366. The coil lead wire support portion 367 has a hole through which the coil lead wire 343a passes axially, and supports the coil lead wire 343a passed through the hole. In this way, the bottom portion 364 supports the coil lead wire 343a drawn out from the coil 43. The coil lead wire 343a supported by the coil lead wire support portion 367 protrudes above the coil lead wire support portion 367 and is electrically connected to the substrate 70. In this embodiment, the coil lead wire support portion 367 supports two coil lead wires 343a. Although not shown in the diagram, multiple coil lead wire support sections 367 are provided at intervals in the circumferential direction.

[0090] The base body portion 366 has a structure substantially the same as the support member 64 of the first embodiment, except that it has a base wall portion 364m. The base wall portion 364m extends radially. The radial outer edge of the base wall portion 364m is connected to the radial inner edge of the first annular portion 64a. The base wall portion 364m is provided with a first through hole 364k that penetrates the base wall portion 364m in the axial direction. In other words, the base portion 364 has a first through hole 364k that penetrates the base portion 364 in the axial direction. As shown in Figure 11, in this embodiment, the first through hole 364k is provided on the radial outer edge of the base wall portion 364m. The first through hole 364k is a rounded rectangle when viewed in the axial direction. The peripheral edge of the first through hole 364k is a frame-shaped portion 364r that protrudes upward. The frame-shaped portion 364r is a substantially rectangular frame shape.

[0091] The frame-shaped portion 364r is provided with an elastic retaining portion 368. In other words, the bottom portion 364 has an elastic retaining portion 368. In this embodiment, the elastic retaining portion 368 is provided in the portion of the frame-shaped portion 364r that is located radially inward. As shown in Figure 10, the elastic retaining portion 368 has a first extension portion 368a, an arc portion 368b, a second extension portion 368c, and a retaining claw portion 368d. The first extension portion 368a protrudes upward from the frame-shaped portion 364r. The arc portion 368b is connected to the upper end of the first extension portion 368a. When viewed in the circumferential direction, the arc portion 368b extends in a semi-circular arc shape that is convex upward radially outward from the upper end of the first extension portion 368a.

[0092] The second extension portion 368c extends downward from the radially outer end of the arc portion 368b. The second extension portion 368c is axially passed through the first through hole 364k. As a result, in this embodiment, a part of the elastic retaining portion 368 is located inside the first through hole 364k. Alternatively, the entire elastic retaining portion 368 may be located inside the first through hole 364k. The lower end of the second extension portion 368c protrudes downward from the first through hole 364k. The retaining claw portion 368d protrudes radially outward from the lower end of the second extension portion 368c. The lower portion of the radially outer surface of the retaining claw portion 368d is an inclined surface 368e that is located radially outward as it moves upward.

[0093] The elastic holding portion 368 is elastically deformable. In this embodiment, the elastic holding portion 368 is elastically deformable in the radial direction. More specifically, the second extension portion 368c is elastically deformable radially inward with the arc portion 368b as a fulcrum. As shown in Figure 11, a pair of elastic holding portions 368 are provided spaced apart in the circumferential direction.

[0094] As shown in Figure 12, in this embodiment, the conductive member 390 is a single member. Therefore, the number of parts of the rotating electric machine 310 can be reduced compared to the case where the conductive member 390 is composed of multiple members. The conductive member 390 has a main body portion 391, a connecting portion 392, a first connecting portion 393, and a second connecting portion 394. The main body portion 391 extends in the axial direction. The main body portion 391 is plate-shaped with its plate surface facing radially. The main body portion 391 has a through hole 391a that penetrates the main body portion 391 in the radial direction. The through hole 391a extends in the axial direction.

[0095] As shown in Figures 10 and 11, the main body 391 is axially inserted through the first through-hole 364k. This allows the conductive member 390 to pass through the first through-hole 364k. The radially outer surface of the main body 391 is in contact with the radially outer surface of the inner surface of the first through-hole 364k. The pressing claw portion 368d of the elastic retaining portion 368 is in contact with the radially inner surface of the main body 391. As a result, the conductive member 390 is in contact with both the elastic retaining portion 368 and the inner surface of the first through-hole 364k. Therefore, the conductive member 390 can be stably held within the first through-hole 364k by the elastic retaining portion 368. Furthermore, even if it becomes necessary to fine-tune the radial position of the conductive member 390, the radial position of the conductive member 390 can be easily adjusted by elastically deforming the elastic retaining portion 368. Therefore, the conductive member 390 can be easily connected to the substrate 70. In this embodiment, the elastic retaining portion 368 is in contact with the conductive member 390 in an elastically deformed state. As a result, the conductive member 390 is pressed against the inner surface of the first through hole 364k by the elastic retaining portion 368. Therefore, the conductive member 390 can be held more stably within the first through hole 364k.

[0096] As shown in Figure 12, the connecting portion 392 is a plate-shaped portion extending from the lower end of the main body portion 391. The connecting portion 392 has a base portion 392a, a curved portion 392b, and a radially extended portion 392c. The base portion 392a protrudes downward from the lower end of the main body portion 391. The curved portion 392b, when viewed in the circumferential direction, extends downward from the lower end of the base portion 392a in a semi-circular arc shape that is convex radially inward. In other words, in this embodiment, the conductive member 390 has a curved portion 392b that curves in a direction that is convex in a direction intersecting the axial direction. This makes it easier to elastically deform the conductive member 390 in the axial direction. Therefore, the force applied to the conductive member 390 from the first housing 361 is less likely to be transmitted to the connection portion between the conductive member 390 and the substrate 70. In addition, since the position of the conductive member 390 can be finely adjusted by elastically deforming the conductive member 390, the conductive member 390 can be easily assembled. The radially extended portion 392c extends radially outward from the lower end of the curved portion 392b. The radially extended portion 392c is a roughly rectangular plate with its surface oriented axially.

[0097] The first connecting portion 393 extends downward from the radially outer end of the radially extended portion 392c. The first connecting portion 393 has an extended portion 393a connected to the radially extended portion 392c and a connecting body portion 393b connected to the lower end of the extended portion 393a. The connecting body portion 393b is substantially cylindrical, opening on both sides in the axial direction. The lower end of the extended portion 393a is connected to the radially inner portion of the connecting body portion 393b. A slit 393c extending in the axial direction is provided in the radially outer portion of the connecting body portion 393b. The slit 393c divides the connecting body portion 393b in the circumferential direction with respect to the central axis of the substantially cylindrical connecting body portion 393b. With the provision of the slit 393c, the connecting body portion 393b has a substantially C-shape, opening radially outward when viewed in the axial direction.

[0098] As shown in Figure 10, the first housing 361 has a hole 361k that opens into the interior of the first housing 361. The hole 361k is provided in a connected portion 361p located on the radially inner surface of the stator housing portion 361c in the first housing body portion 361a. The connected portion 361p protrudes radially inward. The hole 361k is recessed downward from the upper surface of the connected portion 361p. The hole 361k is a hole that opens upward and has a bottom on the lower side. The upper opening of the hole 361k is positioned opposite the second annular portion 364b with a gap between them.

[0099] The first connecting portion 393 is press-fitted into the hole 361k. Therefore, by simply pressing the first connecting portion 393 into the hole 361k, the first connecting portion 393 can be fixed to the first housing 361, and the first connecting portion 393 can be easily electrically connected to the first housing 361. In this embodiment, the connecting body portion 393b of the first connecting portion 393 is press-fitted into the hole 361k. Since the connecting body portion 393b is substantially cylindrical with a portion divided by the slit 393c, it is easy to elastically deform the connecting body portion 393b in the direction that narrows the slit 393c when press-fitting the connecting body portion 393b into the hole 361k. This makes it easier to press-fit the first connecting portion 393 into the hole 361k.

[0100] In this embodiment, the second housing 362 has a contact portion 364p that contacts a part of the conductive member 390 from above. Therefore, the conductive member 390 can be pressed down from above by the second housing 362, and the first connecting portion 393 can be prevented from coming out upward from the hole 361k. Also, when attaching the second housing 362 to the first housing 361 from above, the second housing 362 can push the conductive member 390 from above, pushing the first connecting portion 393 into the hole 361k.

[0101] In this embodiment, the contact portion 364p is the lower end of the second annular portion 364b in the bottom body portion 366. The contact portion 364p is in contact with the upper end of the first connecting portion 393 of the conductive member 390, that is, the upper end of the extended portion 393a. In other words, the contact portion 364p is in contact with the upper end of the first connecting portion 393. This allows the second housing 362 to suitably hold the first connecting portion 393 in place within the hole portion 361k. Furthermore, when the second housing 362 pushes the first connecting portion 393 into the hole portion 361k, it is easier to suitably apply axial force to the first connecting portion 393 and to suitably press-fit the first connecting portion 393 into the hole portion 361k.

[0102] The second connection portion 394 has a plurality of connection terminal portions 394c that penetrate the substrate 70. Therefore, the area over which the ground pattern 72 of the substrate 70 and the second connection portion 394 are connected can be increased. This makes it easier to electrically connect the conductive member 390 to the ground pattern 72 in a suitable manner. In this embodiment, each of the plurality of connection terminal portions 394c is passed axially through a grounding hole portion 71 provided in the substrate 70. Each connection terminal portion 394c is electrically connected to the plated portion 71a in the grounding hole portion 71, for example, by solder.

[0103] As shown in Figure 11, the multiple connection terminals 394c include a pair of connection terminals 394a whose circumferential positions are different from each other, and a pair of connection terminals 394b whose radial position is different from that of the pair of connection terminals 394a. Therefore, the second connection portion 394 can be stably connected to the substrate 70. The connection terminals 394b are located radially inward from the pair of connection terminals 394a. The circumferential position of the connection terminals 394b is the circumferential position between the pair of connection terminals 394a. The connection terminals 394b are located above the pair of elastic retaining portions 368 in the circumferential direction. When the conductive member 390 is inserted into the first through hole 364k from below, the connection terminals 394b are passed axially between the pair of elastic retaining portions 368.

[0104] <Fourth Embodiment> As shown in Figures 13 and 14, in the rotating electric machine 410 of the pump 400 of this embodiment, the conductive member 490 is a single member, similar to the third embodiment. The conductive member 490 has a main body portion 491, a connecting portion 492, a first connecting portion 493, and a second connecting portion 394. The main body portion 491 is plate-shaped, extending in the axial direction with its plate surface facing radially. The connecting portion 492 has a curved portion 492b that curves radially inward from the lower end of the main body portion 491, and a radially extended portion 492c that extends radially outward from the lower end of the curved portion 492b.

[0105] The first connecting portion 493 is a substantially rectangular plate shape that extends diagonally inward and downward from the radially outer end of the radially extended portion 492c. The first connecting portion 493 is fixed to the inner surface of the first housing 461 by a bolt 469. Therefore, the first connecting portion 493 can be firmly fixed to the first housing 461 by the axial force of the bolt 469, and the first connecting portion 493 can be suitably electrically connected to the first housing 461. This allows for more suitable electrical connection between the first connecting portion 493 and the first housing 461.

[0106] The bolt 469 is passed through a hole provided in the first connecting portion 493 and tightened into a female screw hole 461k provided in the first housing 461. In other words, the first housing 461 has a female screw hole 461k into which the bolt 469 is tightened. The female screw hole 461k is provided in the connected portion 461p provided in the first housing 461. The connected portion 461p is provided on the radially inner surface of the stator housing portion 461c in the first housing body portion 461a and protrudes radially inward. The upper surface of the connected portion 461p faces upward and radially inward. The female screw hole 461k opens on the upper surface of the connected portion 461p and opens upward and radially inward. As a result, the female screw hole 461k opens into the interior of the first housing 461.

[0107] The conductive member 490 has a second through-hole 491a that penetrates the conductive member 490. In this embodiment, the second through-hole 491a is provided across the main body portion 491, the curved portion 492b, and the radially extended portion 492c. The second through-hole 491a is provided in the circumferential center of each portion. As a result of providing the second through-hole 491a, the curved portion 492b is divided into two in the circumferential direction.

[0108] As shown in Figure 14, a portion of the second through-hole 491a overlaps with the bolt 469 when viewed in the direction in which the bolt 469 is tightened into the female screw hole 461k. Therefore, the second through-hole 491a allows tools such as screwdrivers used to tighten the bolt 469 to move away from it, preventing the tool from coming into contact with the conductive member 490. This makes it easier to fix the first connecting portion 493 to the first housing 461. In this embodiment, the radially inner end of the portion of the second through-hole 491a provided in the curved portion 492b overlaps with a portion of the head of the bolt 469 when viewed in the direction in which the bolt 469 is tightened into the female screw hole 461k.

[0109] <Fifth Embodiment> As shown in Figure 15, in the rotating electric machine 510 of the pump 500 of this embodiment, the conductive member 590 has a fixed part 596, a second connecting part 594, and a cable 595. In this embodiment, the fixed part 596 is a crimp terminal. The fixed part 596 has a crimp part 596a and a first connecting part 593. The first connecting part 593 is fixed to the inner surface of the first housing 461 by a bolt 569, similar to the first connecting part 493 in the fourth embodiment. Thus, the fixed part 596 is fixed to the first housing 461. The cable 595 connects the fixed part 596 and the second connecting part 594. In this way, by making the part connecting the fixed part 596 having the first connecting part 593 and the second connecting part 594 a cable 595, the degree of freedom in routing from the first connecting part 593 to the second connecting part 594 can be improved. Therefore, the conductive member 590 can be positioned more easily.

[0110] In this embodiment, a crimped portion 596a is fixed to one end of the cable 595. A second connecting portion 594 is fixed to the other end of the cable 595. The second connecting portion 594 penetrates the substrate 70 in the axial direction and is connected to the substrate 70. Although not shown in the figures, the second connecting portion 594 is electrically connected to the substrate 70 by, for example, solder, and is electrically connected to the ground pattern 72 of the substrate 70.

[0111] The present invention is not limited to the embodiments described above, and other configurations and methods may be adopted within the scope of the technical idea of ​​the present invention. The conductive member may have any shape as long as it has a first connection portion electrically connected to the first housing inside the first housing and a second connection portion electrically connected to the ground pattern of the substrate. The conductive member may consist of three or more members. The method of connecting the first connection portion to the first housing and the method of connecting the second connection portion to the ground pattern are not particularly limited. If the conductive member has a first member and a second member, the second member may have an elastic portion that is elastically deformable in the axial direction, or both the first member and the second member may have an elastic portion.

[0112] The support member that supports the substrate from the other axial side (bottom side) may have a bottom wall portion that separates the inside of the first housing from the inside of the second housing, as in the bottom portion 364 of the third embodiment, or it may be annular, as in the support member 64 of the first embodiment. The insulating member that supports the first conductive member from the other axial side and whose radially outer surface contacts the first member may be a member that constitutes the stator insulator. In other words, in the first embodiment described above, instead of the third insulating member 50, the first member 91 may be supported from below by the first insulating member 44, or the first member 91 may contact the radially outer surface of the first insulating member 44. The substrate may have any structure as long as it has a ground pattern.

[0113] The rotating electric machine to which the present invention applies is not limited to a motor, but may also be a generator. The application of the rotating electric machine is not particularly limited. The rotating electric machine may be mounted on equipment other than pumps. The application of the pump is not particularly limited, and may be mounted on equipment other than vehicles.

[0114] Furthermore, this technology can be configured as follows: (1) A rotor rotatable about a central axis; a stator facing the rotor with a gap between them; a substrate electrically connected to the stator; a first metal housing opening on one axial side and housing the stator inside; a second housing fixed to one axial side of the first housing, housing the substrate inside and being insulating; and a conductive member electrically connecting the substrate and the first housing, wherein the substrate has a ground pattern, and the conductive member has a first connection portion electrically connected to the first housing inside the first housing and a second connection portion electrically connected to the ground pattern. (2) The rotating electric machine according to (1), wherein the first housing comprises a first housing body portion that houses the stator inside, and a mounting portion that protrudes radially outward from the first housing body portion. (3) The rotating electric machine according to (1) or (2), wherein the second housing has a bottom located between the substrate and the stator in the axial direction, the bottom supporting a coil lead wire drawn from the coil of the stator or a terminal member electrically connected to the coil lead wire, and the conductive member penetrates the bottom in the axial direction. (4) The rotating electric machine according to (3), wherein the bottom portion has a first through-hole that penetrates the bottom portion axially and through which the conductive member passes, and an elastic holding portion that is elastically deformable and at least a portion of which is located inside the first through-hole, and the conductive member is in contact with the elastic holding portion and the inner surface of the first through-hole. (5) The rotating electric machine according to any one of (1) to (4), wherein the conductive member comprises a first member having the first connecting portion and a second member having the second connecting portion and in axial contact with the first member. (6) The rotating electric machine according to (5), wherein at least one of the first member and the second member has an elastic portion that is elastically deformable in the axial direction, and the first member and the second member are in contact with each other via the elastic portion. (7) The rotating electric machine according to (6), wherein the second housing has a support member that supports the substrate from the other axial side and a cover member that covers the substrate from one axial side, and the second member penetrates the support member in the axial direction and is held by the support member. (8) The rotating electric machine according to (6) or (7), comprising an insulating member located on one axial side of the stator core in the stator, wherein the insulating member is located inside the first housing, a gap is provided between the insulating member and the first housing in the radial direction, the first member is supported by the insulating member from the other axial side and contacts the radial outer surface of the insulating member, the first connecting portion is elastically deformable in the radial direction and is located between the radial outer surface of the insulating member and the radial inner surface of the first housing and contacts the radial inner surface of the first housing. (9) The rotating electric machine according to (8), wherein the first member has a supported portion that contacts the insulating member in the axial and radial directions, an elastic portion that protrudes in one axial direction from the radially inner end of the supported portion, and a protruding portion that protrudes in one axial direction from the radially outer end of the supported portion. (10) The rotating electric machine according to (9), wherein a groove extending radially and opening radially outward is provided on one axial side surface of the insulating member, and at least a part of the supported portion is fitted into the groove. (11) The rotating electric machine according to any one of (1) to (4), wherein the conductive member is a single member. (12) The rotating electric machine according to any one of (1) to (4), wherein the conductive member has a fixed portion that has the first connecting portion and is fixed to the first housing, and a cable that connects the fixed portion and the second connecting portion. (13) The rotating electric machine according to any one of (1) to (7), wherein the first housing has a hole opening into the interior of the first housing, and the first connecting portion is press-fitted into the hole. (14) The rotating electric machine according to (13), wherein the hole is open on one side in the axial direction, and the second housing has a contact portion that contacts a part of the conductive member from one side in the axial direction. (15) The rotating electric machine according to any one of (1) to (7), wherein the first connection is fixed to the inner surface of the first housing by bolts. (16) The first housing has a female screw hole that opens into the interior of the first housing and into which the bolt is tightened, and the conductive member has a second through hole that penetrates the conductive member, The rotating electric machine according to (15), wherein a portion of the second through hole overlaps with the bolt when viewed in the direction in which the bolt is tightened into the female screw hole. (17) The rotating electric machine according to any one of (1) to (16), wherein the conductive member has a curved portion that curves in a direction that is convex in a direction intersecting the axial direction. (18) The rotating electric machine according to any one of (1) to (17), wherein the second connection portion has a plurality of connection terminal portions that penetrate the substrate. (19) The rotating electric machine according to (18), wherein the plurality of connection terminals include a pair of connection terminals having different circumferential positions from each other, and a connection terminal that has a different radial position from the pair of connection terminals. (20) A rotating electric machine as described in any one of items (1) to (19), A pump mechanism connected to the aforementioned rotating electric machine, A pump equipped with the following features.

[0115] The configurations and methods described herein can be combined as appropriate, within the bounds of non-inconsistency. [Explanation of Symbols]

[0116] 10, 210, 310, 410, 510… Rotating electric machine, 20… Pump mechanism, 30… Rotor, 40… Stator, 41… Stator core, 43… Coil, 43a, 343a… Coil lead wire, 50… Third insulating member (insulating member), 54a… Groove, 60… Housing, 61, 361, 461… First housing, 61a, 361a, 461a… First housing main body, 61b… Mounting part, 62, 362… Second housing, 62a… Cover member, 64… Support member (bottom), 70… Substrate, 72… Ground pattern, 81… Terminal member, 90, 290, 390, 490, 590… Conductive member, 91, 291… First member, 9 1a, 291a... Supported part, 91b... Elastic part, 91c, 291c, 393, 493, 593... First connection part, 91d... Protruding part, 91i, 392b, 492b... Curved part, 92... Second member, 92c, 394, 594... Second connection part, 100, 200, 300, 400, 500... Pump, 361k... Hole part, 362a... Cover part, 364... Bottom part, 364k... First through hole, 364p... Contact part, 368... Elastic holding part, 391a... Through hole, 394a, 394b, 394c... Connection terminal part, 461k... Female screw hole, 469, 569... Bolt, 491a... Second through hole, 595... Cable, 596... Fixing part, J... Central axis

Claims

1. It is an electric oil pump, A motor unit having a rotatable rotor with a shaft extending in the axial direction, and a stator facing the rotor with a gap between them, A circuit board electrically connected to the stator, A housing for the motor section, A pump mechanism connected to the motor section, An insulating member located between the substrate and the stator, Equipped with, The insulating member is It is housed inside the aforementioned housing, and A terminal member electrically connects the stator and the substrate, and a conductive member electrically connects the substrate and the housing, The conductive member is Axial curved section, A first extension portion located on one side of the axial curvature of the axially curved portion, It has a second extension located on one side in the axial direction of the axially curved portion and radially outward of the first extension portion, The aforementioned axially curved portion is curved in an arc shape that is convex to the other axial direction when viewed in the circumferential direction. The first extension extends from the radially inward end of the axially curved portion to one side in the axial direction, The second extension extends from the radially outer end of the axially curved portion toward one side in the axial direction, The insulating member has a recess that extends radially inward from the radially outer surface, The recess is located radially inward from the second extension and overlaps with at least a portion of the second extension when viewed radially, in an electric oil pump.

2. The conductive member is A first connecting portion in contact with the housing, A second connection portion that contacts the substrate, It has, The electric oil pump according to claim 1, wherein the first connecting portion is in contact with the inner surface of the housing.

3. The electric oil pump according to claim 2, wherein the inner surface is the radial inner surface of the housing.

4. The conductive member is The first member having the first connecting portion, A second member having the second connecting portion and in axial contact with the first member, An electric oil pump according to claim 2, having the following features.

5. The electric oil pump according to claim 4, wherein both the first member and the second member have elastic portions.

6. The housing has a cylindrical portion, The electric oil pump according to claim 1, wherein the conductive member is electrically connected to the inner surface of the cylindrical portion.

7. The electric oil pump according to any one of claims 1 to 6, wherein the insulating member is located between the substrate and the stator in the axial direction.

8. The rotor has a shaft that extends in the axial direction, The substrate is arranged on one axial side of the motor section. One axial side of the terminal member is electrically connected to the substrate. The other axial side of the terminal member is electrically connected to the stator. The stator is, A ring-shaped stator core, A coil section having a plurality of coil body portions mounted on the stator core, An insulator is disposed between the stator core and the coil section, It has, The terminal member electrically connects the coil portion and the substrate. The aforementioned housing is At least one of the motor sections, a motor housing section that houses the stator, A pump mechanism housing section that houses the aforementioned pump mechanism, A hole is located between the motor housing and the pump mechanism housing in the axial direction, through which the shaft passes in the axial direction, It has, The aforementioned hole connects the inside of the pump mechanism housing and the inside of the motor housing. The electric oil pump according to claim 7, wherein the insulating member has an opening passing through a virtual central axis passing through the center of the shaft.

9. The housing has a pump cover, The pump cover has a through hole that penetrates the pump cover in the axial direction, The shaft has hollow sections that open on both sides in the axial direction. The electric oil pump according to claim 8, wherein the through hole and the hollow portion overlap each other when viewed in the axial direction.

10. The rotor is rotatable about a central axis, The electric oil pump according to any one of claims 1 to 6, wherein the insulating member is an annular shape surrounding the central axis.

11. The electric oil pump according to any one of claims 1 to 6, wherein the substrate is arranged on one axial side of the stator.

12. The electric oil pump according to any one of claims 1 to 6, wherein the conductive member has a contact projection that is pressed against the inside of the housing.

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