Electric oil pump

Abstract

To provide a structure capable of grounding a ground pattern on a base plate while suppressing the increase in size.SOLUTION: A rotary electric machine comprises: a rotor that can rotate about a center axis; a stator that faces the rotor via a gap; a base plate 70 that is electrically connected to the stator; a first metal housing that opens on one side in an axial direction and stores the stator inside; a second housing that is fixed to one side of the first housing in the axial direction, stores the base plate inside, and has insulation properties; and a conductive member 90 that electrically connects the base plate and the first housing. The base plate has a ground pattern. The conductive member has: a first connection 91c electrically connected to the first housing inside of the first housing; and a second connection 92c electrically connected to the ground pattern 72.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a rotating electric machine and a pump. [Background technology]

[0002] There is known a rotating electric machine having a structure in which a ground pattern of a board is electrically connected to a portion of a metal housing that houses the board for grounding. For example, Patent Document 1 describes a structure in which a drive device equipped with an electric motor electrically connects the ground pattern of the board to the housing with a screw. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-80471 A Summary of the Invention [Problem to be solved by the invention]

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

[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 in which the ground pattern of a circuit board can be grounded while preventing an increase in size. [Means for solving the problem]

[0006] One aspect of the rotating electric machine of the present invention includes a rotor rotatable about a central axis, a stator facing the rotor with a gap therebetween, a substrate electrically connected to the stator, a first housing made of metal that opens to one axial side and houses the stator therein, a second housing that is fixed to one axial side of the first housing, houses the substrate therein, and has 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 aspect of a pump of the present invention includes the rotating electric machine described above, and a pump mechanism connected to the rotating electric machine. Effect of the Invention

[0008] According to one aspect of the present invention, in a rotating electric machine and a pump, it is possible to ground a ground pattern of a substrate while suppressing an increase in size of the rotating electric machine. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a pump according to a first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view showing the pump in the first embodiment. [Diagram 3] FIG. 3 is an exploded perspective view showing a part of the stator, a third insulating member, and a terminal member assembly in the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing a part of the pump in the first embodiment, and is a partially enlarged view of FIG. [Diagram 5] FIG. 5 is a perspective view showing a part of the pump in the first embodiment. [Figure 6] FIG. 6 is a view of a part of the pump in the first embodiment as viewed from above. [Figure 7]FIG. 7 is an exploded perspective view showing a part of the third insulating member and a first member of the conductive member in the first embodiment. [Figure 8] FIG. 8 is a perspective view showing a conductive member in the first embodiment. [Figure 9] FIG. 9 is a perspective view showing a part of the pump according to the second embodiment. [Figure 10] FIG. 10 is a cross-sectional view showing a part of a pump according to the third embodiment. [Figure 11] FIG. 11 is a perspective view showing a part of a pump according to the third embodiment. [Figure 12] FIG. 12 is a perspective view showing a conductive member according to the third embodiment. [Figure 13] FIG. 13 is a perspective view showing a part of a pump according to the fourth embodiment. [Figure 14] FIG. 14 is a view of a part of the pump according to the fourth embodiment, seen from the direction in which the bolt for fixing the conductive member is fastened into the female screw hole. [Figure 15] FIG. 15 is a partial cross-sectional perspective view showing a part of a pump according to a fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] In each drawing, the central axis J of the pump in each embodiment is shown as appropriate. The central axis J is a virtual axis. In the following description, the direction in which the central axis J extends, that is, the axial direction of the central axis J, is simply called the "axial direction", the radial direction centered on the central axis J is simply called the "radial direction", and the circumferential direction centered on the central axis J is simply called the "circumferential direction". In each drawing, the Z axis parallel to the axial direction is shown. In the following description, the side (+Z side) of the axial direction toward which the arrow of the Z axis points is called the "upper side", and the side (-Z side) opposite to the side toward which the arrow of the Z axis points is called the "lower side". In each embodiment below, the upper side corresponds to the "one axial side", and the lower side corresponds to the "other axial side". Note that the upper side and the lower side are names simply for explaining the arrangement relationship of each part, and the actual arrangement relationship may be an arrangement relationship other than the arrangement relationship indicated by these names.

[0011] First Embodiment The pump 100 of this 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. 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 accommodated in a pump chamber 63 provided in a first housing 61 described below. 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 22 that surrounds the inner rotor 21 and meshes with the inner rotor 21.

[0013] The rotating electric machine 10 includes a rotor 30 rotatable about a central axis J, a stator 40 facing the rotor 30 with a gap therebetween, a third insulating member 50, a housing 60, and a substrate 70. The rotor 30 includes a shaft 31 extending in the axial direction, a rotor core 32 fixed to the outer circumferential surface of the shaft 31, and a plurality of magnets 33 fixed to the rotor core 32. In this embodiment, the shaft 31 is a cylindrical hollow shaft extending about the central axis J and opening on both sides in the axial direction. A 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 disposed radially outwardly of the rotor core 32, facing the rotor core 32 with a gap therebetween. As shown in Fig. 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 teeth 41b are disposed at equal intervals around the circumference. A plurality of coils 43 are attached to each of the teeth 41b via insulators 42.

[0016] As shown in FIG. 2, the insulator 42 has a first insulating member 44 having insulating properties and a second insulating member 45 having insulating properties. The first insulating member 44 is an insulating member located on the upper side of the stator core 41. The second insulating member 45 is an insulating member located on the lower side of 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 FIG. 3, the first insulating member 44 is annular and surrounds the central axis J. The first insulating member 44 has an annular portion 44a located on the upper side of the core back 41a and a plurality of extension portions 44b extending radially inward from the annular portion 44a. The plurality of extension portions 44b cover each of the plurality of teeth 41b from the upper side and both sides in the circumferential direction.

[0017] The annular portion 44a is substantially annular about the central axis J. The outer diameter of the annular portion 44a is smaller than the outer diameter of the stator core 41. The radially outer surface of the annular portion 44a is located radially inwardly away from the radially outer surface of the stator core 41. The annular portion 44a has an annular main body portion 44c, a plurality of protrusions 44d protruding radially outward from the main body portion 44c, and a plurality of claw portions 44e protruding radially outward from the main body portion 44c. The plurality of protrusions 44d are provided at portions of the annular portion 44a where the plurality of extensions 44b are connected. The plurality of protrusions 44d are arranged at equal intervals around one circumference in the circumferential direction.

[0018] The claw portions 44e are provided at intervals in the circumferential direction. The claw portions 44e are arranged at equal intervals around the circumference in the circumferential direction. For example, three claw portions 44e are provided. Each claw portion 44e is provided between the convex portions 44d adjacent in the circumferential direction. The claw portions 44e extend in the circumferential direction. The claw portions 44e connect a pair of convex portions 44d adjacent 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 at 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 portion 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 a gap in the axial direction. The first contact surface 44f is a flat surface that faces downward and is perpendicular to the axial direction. The radially outer surface of the claw portion 44e has an inclined surface 44g. The inclined surface 44g is positioned 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 on the upper side of the stator core 41. In this embodiment, the third insulating member 50 is located on the upper side of the first insulating member 44. The third insulating member 50 is attached to the first insulating member 44. The third insulating member 50 is annular in shape surrounding the central axis J. More specifically, the third insulating member 50 is substantially annular in shape centered on the central axis J.

[0021] As shown in FIG. 4, the third insulating member 50 is located inside the first housing 61. An upper end of the third insulating member 50 is located lower than an upper end of the first housing 61. A radially outer surface of the third insulating member 50 is located radially inwardly away from a radially inner surface of the first housing 61. In other words, a gap is provided between the third insulating member 50 and the first housing 61 in the radial direction. As shown in FIG. 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 annular in shape with the central axis J as its center. The annular portion 51 is plate-like with its plate surface facing the axial direction. The annular portion 51 has holes 51a penetrating the annular portion 51 in the axial direction. The holes 51a extend in the circumferential direction. A plurality of holes 51a are provided at intervals in the circumferential direction. In this embodiment, three holes 51a are provided. The plurality of holes 51a are each provided at a position overlapping with a claw main body portion 53b of the plurality of claw portions 53, which will be described later, when viewed in the axial direction.

[0023] The lead-out wire holding portion 52 is a portion that holds the coil lead-out wire 43a drawn from the coil 43. A plurality of lead-out wire holding portions 52 are provided at intervals in the circumferential direction. The lead-out wire holding portion 52 has a recess 52a into which a terminal member 81, which will be described later, is inserted. The terminal member 81 is inserted into the recess 52a from above, whereby the terminal member 81 and the coil lead-out wire 43a are electrically connected to each other.

[0024] The claw portion 53 extends downward from the annular portion 51. A plurality of the 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 extending downward from the annular portion 51, and a claw body portion 53b protruding radially inward from a lower end portion of the base portion 53a. The base portion 53a is plate-shaped with a plate surface facing in the radial direction. The base portion 53a is elastically deformable in the radial direction with an upper end portion connected to the annular portion 51 as a fulcrum.

[0025] As shown in FIG. 4, the claw body 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 that faces upward and is perpendicular to the axial direction. The second contact surface 53c contacts the first contact surface 44f from below, so that the claw portion 53 is hooked on the claw portion 44e from below. The third insulating member 50 is fixed to the first insulating member 44 of the insulator 42 by each claw portion 53 being hooked on each claw portion 44e from below. In this embodiment, the third insulating member 50 is fixed to the insulator 42 by a snap-fit ​​structure formed by the claw portion 53 and the claw portion 44e.

[0026] As shown in FIG. 5 to FIG. 7, the third insulating member 50 has a conductive member support portion 54 that supports a first member 91 of the conductive member 90 described later. In this embodiment, the conductive member support portion 54 is composed of a portion of the annular portion 51 where 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, the groove 54a is provided on the upper surface of the third insulating member 50. The groove 54a extends in the radial direction and opens to the radial outside. In this embodiment, the groove 54a also opens to the radial inside. The groove 54a is provided with one hole portion 51a. On both circumferential edge portions of the groove 54a, a convex portion 54b that protrudes upward is provided. The convex portion 54b extends in the radial direction. The convex portion 54b extends along the radial direction. One of the pair of convex portions 54b is divided in the radial direction by the hole portion 51a.

[0027] 7, the conductive member support portion 54 has a through portion 54c that axially penetrates a radially outer end of the groove 54a. The through portion 54c axially penetrates a radially outer edge portion of the annular portion 51. The through portion 54c opens radially outward. By providing the through portion 54c, the radially outer edge portion of the portion of the annular portion 51 where the groove 54a is provided is recessed radially inward relative to the radially outer edge portions of the portions of the annular portion 51 located on both circumferential sides of the groove 54a.

[0028] The conductive member support portion 54 has a support recess 54d provided on the radial outer surface of the claw portion 53. The support recess 54d is recessed radially inward from the radial 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 inner surface of the support recess 54d facing radially outward is smoothly connected to the radial outer surface of the annular portion 51 at the portion 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 an upper portion of the support recess 54d. The narrow portion 54f is a lower portion 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 on both sides in the circumferential direction beyond the narrow portion 54f. The wide portion 54e opens to the upper side and 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 to the lower side.

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

[0031] The first housing 61 accommodates the pump mechanism 20, the rotor 30, the stator 40, and the third insulating member 50 therein. The first housing 61 is made of metal. The first housing 61 is tubular and opens upward. As shown in FIG. 1, the first housing 61 is substantially cylindrical and centered on the central axis J. The first housing 61 has a first housing main body portion 61a and an attachment portion 61b.

[0032] The first housing body 61a has a generally cylindrical shape centered on the central axis J. As shown in FIG. 2, the first housing body 61a accommodates the rotor 30, the stator 40, and the third insulating member 50 therein. The first housing body 61a has a stator accommodating portion 61c, a pump mechanism accommodating portion 61d, and a pump cover 61e. The stator accommodating portion 61c and the pump mechanism accommodating portion 61d are part of the same single member. The pump cover 61e is separate from the stator accommodating portion 61c and the pump mechanism accommodating portion 61d.

[0033] The stator accommodating portion 61c is generally cylindrical and has an upward opening about the central axis J. The stator accommodating portion 61c accommodates the stator 40 therein. The outer peripheral surface of the stator core 41 is fixed to the inner peripheral surface of the stator accommodating portion 61c. The stator accommodating portion 61c has a bottom wall portion 61h located on the lower side. The bottom wall portion 61h is provided with a hole portion 61i through which the shaft 31 is passed in the axial direction.

[0034] The pump mechanism accommodating portion 61d is connected to the lower side of the stator accommodating portion 61c. The outer diameter of the pump mechanism accommodating portion 61d is smaller than the outer diameter of the stator accommodating portion 61c. The pump mechanism accommodating portion 61d has an accommodating recess 61g recessed upward from the lower surface of the pump mechanism accommodating portion 61d. At least a part of the lower opening of the accommodating recess 61g is covered by the pump cover 61e to form a pump chamber 63 that accommodates the pump mechanism 20 therein. The lower end of the shaft 31 that is passed through the hole portion 61i is inserted into the pump chamber 63. The lower end of the shaft 31 is connected to the inner rotor 21 in the pump chamber 63.

[0035] As shown in FIG. 1, the mounting portion 61b protrudes radially outward from the first housing main body portion 61a. More specifically, the mounting portion 61b protrudes radially outward from the outer circumferential surface of the upper portion of the stator accommodating portion 61c. The mounting portion 61b and the stator accommodating portion 61c are part of a single member. A plurality of mounting portions 61b are provided at intervals in the circumferential direction. In this embodiment, a pair of mounting portions 61b are provided radially sandwiching the central axis J. The mounting portion 61b has a mounting hole 61f penetrating the mounting portion 61b in the axial direction.

[0036] The mounting portion 61b is a portion that is attached to an apparatus to which the pump 100 is to be attached. In this embodiment, the mounting portion 61b is fixed to the housing of the apparatus to which the pump 100 is to be attached by fastening a bolt passed through the mounting hole 61f to the housing of the apparatus. The housing of the apparatus is made of metal, for example, and is electrically connected to the first housing 61, which is also made of metal.

[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 has insulating properties. In this embodiment, the second housing 62 is made of resin. The second housing 62 is tubular surrounding the central axis J. More specifically, the second housing 62 is substantially cylindrical with the central axis J as its center and opening downward. As shown in FIG. 2, the second housing 62 accommodates the substrate 70 therein. The second housing 62 has a cover member 62a and a support member 64. In this embodiment, the cover member 62a and the support member 64 are separate from each other.

[0038] The cover member 62a covers the substrate 70 from above. The cover member 62a is generally cylindrical and opens downward. As shown in FIG. 1, the cover 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 generally disk-shaped and expands in the radial direction. As shown in FIG. 2, the top wall portion 62b covers the substrate 70 from above. The peripheral wall portion 62c protrudes downward from the radial outer edge portion of the top wall portion 62b. The peripheral wall portion 62c is generally cylindrical and centered on the central axis J. The substrate 70 is disposed on the radial inner side of the peripheral wall portion 62c. The flange portion 62h protrudes radially outward from the lower end portion of the peripheral wall portion 62c. The flange portion 62h is generally annular and surrounds the central axis J. The flange portion 62h is in the form of a plate whose plate surface faces in the axial direction.

[0039] The fixed claw portion 62d protrudes downward from the radial outer edge of the flange portion 62h. The fixed claw portion 62d is located radially outside the upper end portion of the first housing 61. The fixed claw portion 62d has a base portion 62f protruding downward from the radial outer edge portion of the flange portion 62h, and a claw main body portion 62g protruding radially inward from the lower end portion of the base portion 62f. The claw main 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 on a portion of the inner surface of the fixing groove 61j located on the upper side. As a result, the fixed claw portion 62d is fixed to the first housing 61. As shown in FIG. 1, a plurality of fixed claw portions 62d are provided at intervals in the circumferential direction. The second housing 62 is fixed to the first housing 61 by the plurality of fixed claw portions 62d.

[0040] The connector portion 62e is provided on the top wall portion 62b. As shown in Fig. 2, the connector portion 62e protrudes from the top wall portion 62b on both sides in the axial direction. Although not shown, the connector portion 62e holds a plurality of terminals. The plurality of terminals are electrically connected to the substrate 70. A connector of an external device is connected to the connector portion 62e.

[0041] In this embodiment, the support member 64 corresponds to a "bottom" located between the substrate 70 and the stator 40 in the axial direction. The support member 64 is fitted to the radially inner side of the lower end of the peripheral wall portion 62c of the cover member 62a. As shown in FIG. 3, the support member 64 is annular and surrounds the central axis J. More specifically, the support member 64 is substantially annular and 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 made, for example, by insert molding using the terminal member 81 and a conductive member 90 (described later) as insert members. The support member 64, the terminal member 81, and the conductive member 90 constitute a terminal member assembly 80.

[0042] The support member 64 has a first annular portion 64a, a second annular portion 64b, a flange portion 64c, a board support portion 64f, a protrusion portion 64g, a terminal holding portion 64h, and a conductive member holding portion 64i. The first annular portion 64a is substantially annular in shape centered on the central axis J. As shown in FIG. 2, the first annular portion 64a is fitted to the radially inner side of the lower end portion 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 in shape surrounding the central axis J. In this embodiment, the seal member 65a is an O-ring. The seal member 65a seals 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 annular about 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 that of the first annular portion 64a. The inner diameter of the second annular portion 64b is larger than that of the first annular portion 64a. The second annular portion 64b is fitted into the inside of the upper opening of the first housing 61. The outer peripheral surface of the second annular portion 64b is provided with a seal groove 64e into which a seal member 65b is fitted. The seal groove 64e is annular and surrounds the central axis J. In this embodiment, the seal member 65b is an O-ring. The seal member 65b seals between the outer peripheral surface of the second annular portion 64b and the inner peripheral 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 about the central axis J. The flange portion 64c is plate-shaped with a plate surface facing the axial direction. The flange portion 64c is located axially between the flange portion 62h of the cover member 62a and the upper end of the first housing 61. The flange portion 64c is sandwiched in the axial direction between the flange portion 62h and the upper end of the first housing 61 while in contact with each other.

[0045] As shown in FIG. 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 has a generally rectangular shape that is long in the circumferential direction when viewed in the axial direction. A plurality of substrate support portions 64f are provided at intervals in the circumferential direction. In this embodiment, three substrate support portions 64f are provided. The plurality of substrate support portions 64f are arranged at equal intervals around the circumference in the circumferential direction. As shown in FIG. 2, the upper surface of the substrate support portion 64f contacts the lower surface of the substrate 70 at the radial outer edge portion. As a result, the support member 64 supports the substrate 70 from below.

[0046] As shown in FIG. 3, the protrusion 64g protrudes upward from the radial inner edge of the first annular portion 64a. The protrusion 64g protrudes upward from the substrate support portion 64f. The protrusion 64g is generally cylindrical. A plurality of the protrusions 64g are provided at intervals in the circumferential direction. In this embodiment, four protrusions 64g are provided. As shown in FIG. 4, the protrusion 64g is passed axially through a hole 70a provided in the substrate 70. The substrate 70 is positioned radially relative to the support member 64 by passing each of the plurality of protrusions 64g through the hole 70a.

[0047] As shown in FIG. 3, the terminal holding portion 64h protrudes radially inward from the inner peripheral surface of the first annular portion 64a. The terminal holding portion 64h holds a terminal member 81. In this way, the support member 64 supports the terminal member 81. The terminal holding portion 64h is 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 one circumference in the circumferential direction. The circumferential positions of the multiple terminal holding portions 64h are the same as the circumferential positions of the multiple board support portions 64f. Each terminal holding portion 64h is located radially inward of each board 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 the terminal holding portions 64h adjacent to each other in the circumferential direction. The conductive member holding portion 64i holds a second member 92, which will be described later. A radially inner end portion of the conductive member holding portion 64i is located radially inward relative to a radially inner end portion 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 member 81 protrudes from the terminal member 81 on both sides in the axial direction. The terminal member 81 is made of metal. The terminal member 81 has a base portion 81a, a coil connection portion 81b, and a board connection portion 81c. The base portion 81a is plate-shaped with a plate surface facing in the radial direction. 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 downward from the terminal holding portion 64h. The coil connection portion 81b is plate-shaped with a plate surface facing in the radial direction. 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 in the recess 52a. As a result, the terminal member 81 is electrically connected to the coil lead wire 43a.

[0051] The board connection portion 81c protrudes upward from the upper edge of the base portion 81a. In this embodiment, a pair of board connection portions 81c are provided with a gap therebetween in the circumferential direction. As shown in FIG. 2, the board connection portion 81c is passed axially through a hole portion 70b provided in the board 70. In this embodiment, the board connection portion 81c is a press-fit terminal that is press-fitted into the hole portion 70b to be electrically connected to the board 70. The coil connection portion 81b is electrically connected to the coil lead wire 43a, and the board connection portion 81c is electrically connected to the board 70, so that the board 70 is electrically connected to the stator 40 via the terminal member 81.

[0052] In this embodiment, the substrate 70 is plate-shaped with the plate surface facing the axial direction. The substrate 70 spreads in the radial direction. The radial outer edge of the substrate 70 contacts the upper surface of the substrate support portion 64f of the support member 64. The substrate 70 is a printed wiring board provided with a wiring pattern (not shown). In this embodiment, the substrate 70 is a multi-layer substrate. A plurality of electronic components 73 are attached to 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 a coil lead wire 43a connected to the substrate 70. This causes the rotor 30 to rotate, and the pump mechanism 20 to be driven.

[0053] As shown in FIG. 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 a plurality of layers constituting 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 in the axial direction among the plurality of layers constituting the substrate 70. The ground pattern 72 may be provided in any manner with respect to the substrate 70. The substrate 70 has a ground hole portion 71 penetrating the substrate 70 in the axial direction. A plated portion 71a is provided on the inner surface of the ground hole portion 71. The plated portion 71a is, for example, copper plated. 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 conductive. The conductive member 90 is made of metal. In this embodiment, the conductive member 90 includes a first member 91 and a second member 92. The first member 91 and the second member 92 are separate members. 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 Fig. 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 Figs. 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 the supported portion 91a, the elastic portion 91b, the first connecting portion 91c, and the protruding portion 91d.

[0056] The supported portion 91a is a portion 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 a plate surface facing the axial direction. The axial contact portion 91e has a pair of arms 91g and a connecting portion 91h. The pair of arms 91g extend in the radial direction 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 to each other.

[0057] As shown in FIG. 5, the axial contact portion 91e is fitted into the groove 54a from above. That is, a part of the supported portion 91a is fitted into the groove 54a. As a result, the supported portion 91a is caught on the circumferential inner surface of the groove 54a, and the first member 91 is prevented from being displaced in the circumferential direction relative to the third insulating member 50. 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 portion 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 bottom surface on the lower side of the groove 54a. As a result, the axial contact portion 91e is in axial contact with the third insulating member 50, and the supported portion 91a is in axial contact with the third insulating member 50. The axial contact portion 91e is supported from below by the lower bottom surface of the groove 54a. That is, 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 of the radial inner edge portion of the annular portion 51.

[0058] The radial contact portion 91f extends in the circumferential direction and connects the radially outer ends of the pair of arm portions 91g. The radial contact portion 91f is plate-shaped with a plate surface facing the radial direction. 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 contacts the surface of the inner surface of the wide portion 54e facing radially outward. As a result, the radial contact portion 91f contacts the third insulating member 50 in the radial direction, and the supported portion 91a contacts the third insulating member 50 in the radial direction. That is, the first member 91 contacts the radially outer surface of the third insulating member 50. As a result, the first member 91 is positioned in the radial direction 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 FIG. 8, the elastic portion 91b has a curved portion 91i, a third extending portion 91j, and an elastic contact portion 91k. That is, the conductive member 90 has the curved portion 91i, the third extending portion 91j, and the elastic contact portion 91k.

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

[0061] The third extension portion 91j is a rectangular plate extending obliquely 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 extending in a curved 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 with each other, the elastic contact portion 91k is pressed downward by the second member 92, so that the curved portion 91i is elastically deformed, and the third extension portion 91j and the elastic contact portion 91k are elastically displaced downward with the curved portion 91i as a fulcrum. In this embodiment, when the elastic portion 91b is in contact with the second member 92, the elastic portion 91b is in a state of being elastically deformed downward in the axial direction, and applies an upward force 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, so that any misalignment in the axial direction between the first member 91 and the second member 92 can be absorbed by the elastic deformation of the elastic portion 91b, and the elastic force of the elastic portion 91b can be utilized to bring the first member 91 and the second member 92 into suitable contact while pressed against each other.

[0062] The first connection portion 91c protrudes downward from the radially outer end of the supported portion 91a. More specifically, the first connection portion 91c protrudes downward from the circumferential center of the lower edge of the radial contact portion 91f. As shown in FIG. 4, the first connection 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 connection portion 91c is located radially between the radially outer surface of the claw portion 53 and the inner circumferential surface of the stator accommodating portion 61c. The first connection portion 91c has a first extension portion 91m, an axially curved portion 91p, a second extension portion 91r, and a contact protrusion 91s.

[0063] As shown in FIG. 5, the first extension portion 91m extends downward from the radial contact portion 91f. The first extension portion 91m has a rectangular plate shape with a plate surface facing the radial direction and elongated in the axial direction. The first extension portion 91m is inserted into the narrow width portion 54f of the support recess 54d. This allows the first extension portion 91m to be caught in the circumferential direction by the inner side surfaces on both sides of the circumferential direction of the narrow width portion 54f, suppressing the circumferential position of the first connection portion 91c from being shifted. The first extension portion 91m contacts the surface of the inner surface of the narrow width portion 54f facing radially outward. This allows the first connection portion 91c to be in radial contact with the third insulating member 50.

[0064] The axially curved portion 91p is a plate-like shape that extends in a curved arc shape that is convex downward when viewed in the circumferential direction. The axially curved portion 91p is disposed on the upper side of the core back 41a so as to face the core back 41a with a gap therebetween. The provision of the axially curved portion 91p allows the first connection portion 91c to elastically deform in the radial direction.

[0065] The second extension portion 91r extends upward from the radially outer end of the axially curved portion 91p. The second extension portion 91r is plate-shaped with a plate surface facing the radial direction. The second extension portion 91r is located radially outside the first extension portion 91m. The second extension portion 91r faces the first extension portion 91m in the radial direction with a gap therebetween. The upper edge of the second extension portion 91r is arc-shaped and convex upward when viewed in the radial direction. The upper end of the second extension portion 91r is located lower than the upper end of the first extension portion 91m.

[0066] The contact protrusion 91s protrudes radially outward from the second extending portion 91r. In this embodiment, the contact protrusion 91s is a hemispherical shell shape that protrudes radially outward. The contact protrusion 91s is formed, for example, by crimping a part of the second extending portion 91r radially outward. As shown in FIG. 4 and FIG. 6, the contact protrusion 91s contacts the inner circumferential surface of the stator accommodating portion 61c. That is, the first connecting portion 91c contacts the radially inner surface of the first housing 61. As a result, the first connecting portion 91c is electrically connected to the first housing 61 inside the first housing 61.

[0067] The first connection portion 91c is in contact with the first housing 61 in a state in which the second extension portion 91r and the contact protrusion 91s are elastically deformed in a direction in which they are elastically displaced radially inward with the axial curved portion 91p as a fulcrum. This allows the contact protrusion 91s to be pressed against the first housing 61 from the radially inner side, and the first connection portion 91c can be suitably electrically connected to the first housing 61. Thus, according to the present embodiment, the first connection portion 91c is elastically deformable in the radial direction, is positioned radially between the radially outer side surface of the third insulating member 50 and the radially inner side surface of the first housing 61, and is in contact with the radially inner side surface of the first housing 61, so that the first connection portion 91c can be suitably electrically connected to the first housing 61.

[0068] 5, the protruding portion 91d protrudes upward from the radially outer end of the supported portion 91a. Therefore, when assembling the first member 91, the protruding portion 91d can be pinched with a jig or the like. This makes it easier to insert the first connecting portion 91c of the first member 91 from above into the radial gap between the third insulating member 50 and the first housing 61. This makes it easier to assemble the first member 91.

[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 has a plate surface facing the radial direction and is a generally rectangular plate that is long in the axial direction. The upper end of the protrusion 91d is located lower than 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 arranged at a position overlapping the first connecting portion 91c when viewed in the axial direction. Therefore, when the protrusion 91d is pinched to assemble the first member 91, 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 arranged at a position overlapping the first extending 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 contact with the first member 91 in the axial direction. As shown in FIG. 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 as the bottom in the axial direction. A part 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 connection portion 92c. That is, the conductive member 90 has the first wall portion 92a, the second wall portion 92b, and the second connection portion 92c.

[0071] The first wall portion 92a is a rectangular plate whose plate surface faces the axial direction. The first wall portion 92a is embedded in the lower surface of the conductive member holding portion 64i. The lower surface of the first wall portion 92a is disposed at the same position in the axial direction as the lower surface of the conductive member holding portion 64i and is exposed to the outside of the conductive member holding portion 64i. The elastic contact portion 91k of the first member 91 contacts the lower surface of the first wall portion 92a. The upper surface of the first wall portion 92a contacts the lower surface 64j of the conductive member holding portion 64i. The lower surface 64j of the conductive member holding portion 64i supports the first wall portion 92a that receives a reaction force of an elastic force caused by the elastic portion 91b of the first member 91 being elastically deformed 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 a plate-like member with a plate surface facing in the radial direction. As shown in FIG. 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 connection portion 92c extends upward from the upper end of the second wall portion 92b. In this embodiment, the second connection portion 92c extends upward from the circumferential center of the upper end of the narrow portion 92e. In this embodiment, the second connection portion 92c has an elongated, approximately rectangular prism shape extending in the axial direction. The second connection portion 92c is passed through the ground hole portion 71 provided in the substrate 70 in the axial direction. The second connection portion 92c is in contact with the plated portion 71a provided on the inner surface of the ground hole portion 71. This allows the second connection portion 92c to be 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. Therefore, the second housing 62 that houses the substrate 70 can be made of an insulating member such as resin, and the ground pattern 72 can be grounded via the conductive member 90 and the first housing 61. This makes it possible to stabilize the reference potential of the ground pattern 72, and to suppress the generation of noise caused by the current flowing through the substrate .

[0074] According to the present embodiment, the first connection portion 91c is electrically connected to the first housing 61 inside the first housing 61. Therefore, there is no need to make a member for grounding the ground pattern 72 of the substrate 70 protrude outside the second housing 62, and the size of the rotating electric machine 10 can be suppressed. Therefore, according to the present embodiment, the ground pattern 72 of the substrate 70 can be grounded while suppressing the size of the rotating electric machine 10 from being increased. Furthermore, the rotating electric machine 10 can be easily assembled compared to a case where a member for grounding the ground pattern 72 is protruded outside the second housing 62 and connected to the first housing 61 from the outside. Furthermore, unlike a case where the substrate 70 is directly fixed to a metal housing by screwing, there is no need to place an insulating member between the substrate 70 and the second housing 62. Furthermore, it is possible to suppress problems such as loosening of the fixing of the substrate 70 due to deformation caused by aging of the insulating member.

[0075] According to this embodiment, the first housing 61 has the mounting portion 61b protruding radially outward from the first housing body portion 61a. Therefore, by fixing the mounting portion 61b to the housing of the device to which the rotating electric machine 10 is attached, the ground pattern 72 can be electrically connected to the housing of the device 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 suitably.

[0076] Furthermore, according to the present embodiment, the conductive member 90 axially penetrates the support member 64 serving as the bottom. Therefore, by providing the support member 64 serving as the bottom and supporting the terminal member 81, it is possible to easily electrically connect the stator 40 and the board 70, while the conductive member 90 can suitably electrically connect the board 70 and the first housing 61.

[0077] According to the present 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 in axial contact with the first member 91. This makes it possible to adopt an assembly method in which the first member 91 is assembled and then the second member 92 is assembled. This makes it possible to prevent the conductive member 90 from protruding significantly upward in the axial direction from within the first housing 61 during the period from when the first member 91 is assembled to when the second member 92 is assembled, compared to when the conductive member 90 is a single member. This makes it easier to carry out the assembly process after the first member 91 is assembled. This improves the ease of assembly of the rotating electric machine 10 and the pump 100.

[0078] Moreover, 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 in a state in which the second member 92 is held. This allows the second member 92 to be assembled and brought into contact with the first member 91 in a state in which the second connection portion 92c of the second member 92 is not connected to the board 70. Therefore, before performing the operation of connecting the second member 92 and the board 70, a continuity check operation can be performed to check whether the first member 91 and the second member 92 are electrically connected.

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

[0080] The worker or the like assembling the pump 100 described above places the stator 40 in the first housing 61, and then inserts the third insulating member 50 into the first housing 61 from the opening on the upper side. The worker or the like 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 or the like holds the coil lead wire 43a drawn from the coil 43 in the recess 52a of the lead wire holding portion 52 of the third insulating member 50 in a state in which the third insulating member 50 is fixed to the stator 40. The worker or the like holds the protruding portion 91d with a jig and inserts the first member 91 into the first housing 61 from the opening on the upper side. The worker or the like attaches the first member 91 to the third insulating member 50 while inserting the first connecting portion 91c between the radially outer surface of the third insulating member 50 and the radially inner surface of the first housing 61. When the first connection portion 91c is inserted, the first connection portion 91c comes into contact with the radial outer surface of the third insulating member 50 and the radial inner surface of the first housing 61, and is pushed by the radial outer surface of the third insulating member 50 and the radial inner surface of the first housing 61, thereby elastically deforming in the radial direction.

[0081] Next, a worker or the like 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. By performing an electrical continuity test between the second member 92 and the first housing 61 in this state, it is possible to check whether the first member 91 and the second member 92 are electrically connected before arranging the board 70.

[0082] Next, the worker inserts the rotor 30 into the first housing 61 and places it therein. The rotor 30 may be placed before the terminal member assembly 80 is placed in the first housing 61. Next, the worker places the board 70 on the upper side of the terminal member assembly 80. At this time, the worker moves the board 70 closer to the board support portion 64f while positioning the board 70 in the radial direction by inserting each protrusion 64g into each hole portion 70a of the board 70. As a result, by moving the board 70 until it comes into contact with the board support portion 64f, the board connection portion 81c can be suitably pressed into the hole portion 70b of the board 70, while the second connection portion 92c can be suitably pressed into the ground hole portion 71 of the board 70. In this way, in this embodiment, the terminal member 81 and the conductive member 90 can be easily connected to the board 70 by simply moving the board 70 closer to the terminal member assembly 80 from above. Next, the worker or the like hooks the fixing claws 62d into the fixing grooves 61j of the first housing 61 to fix the cover member 62a to the first housing 61. In this manner, the rotating electric machine 10 is assembled.

[0083] Hereinafter, embodiments different from the above-described embodiments will be described. In the following description of each embodiment, the description of the same configuration as that described above in the description of each embodiment may be omitted by appropriately assigning the same reference numerals. In addition, the parts corresponding to the respective parts of the configuration described above in the description of each embodiment may be assigned the same names and different reference numerals to describe the differences from the above-described configuration, and the description of the similarities to the above-described configuration may be omitted. Note that, as the configuration whose description is omitted in each of the following embodiments, the same configuration as that described above in the description of each embodiment may be adopted within a range that does not contradict.

[0084] <Second embodiment> 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 extends in the radial direction and has a generally rectangular plate shape with a plate surface facing the axial direction. The supported portion 291a is supported from below by the annular portion 51.

[0085] The first connecting portion 291c has an extending portion 291m, a connecting portion 291t, and a pair of contact protrusions 291u. The extending portion 291m is a generally rectangular plate extending obliquely downward and radially inward from the radially outer end of the supported portion 291a. The extending portion 291m is located away from the radially outer side of the claw portion 253 of the third insulating member 250. The third insulating member 250 is similar to the third insulating member 50 of the first embodiment, except that the 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 extending portion 291m. The connecting portion 291t is plate-shaped with a plate surface facing in the radial direction. The connecting portion 291t protrudes on both sides in the circumferential direction beyond the lower end of the extending portion 291m. The connecting portion 291t is in contact with the radial outer surface of the base portion 253a of the claw portion 253. As a result, the first member 291 is in contact with the radial outer surface of the third insulating member 250.

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

[0088] <Third embodiment> As shown in FIG. 10 and FIG. 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 from each other. The cylindrical portion 362c is cylindrical and opens on both axial sides. 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 form a lid member substantially similar to the lid member 62a of the first embodiment. As shown in FIG. 11, the cylindrical portion 362c has a board support portion 362j that supports the board 70 from below, and a protrusion portion 362k that protrudes upward from the board support portion 362j. The protrusion portion 362k is passed through a hole provided in the board 70 in the axial direction.

[0089] As shown in FIG. 10, the bottom 364 has a bottom main body 366 and a coil lead-out wire support 367. The bottom main body 366 and the coil lead-out wire support 367 are separate from each other. The coil lead-out wire support 367 is fixed to the upper side of the bottom main body 366. The coil lead-out wire support 367 has a hole through which the coil lead-out wire 343a passes in the axial direction, and supports the coil lead-out wire 343a passed through the hole. As a result, the bottom 364 supports the coil lead-out wire 343a drawn from the coil 43. The coil lead-out wire 343a supported by the coil lead-out wire support 367 protrudes upward from the coil lead-out wire support 367 and is electrically connected to the substrate 70. In this embodiment, the coil lead-out wire support 367 supports two coil lead-out wires 343a. Although not shown in the drawing, a plurality of coil lead wire supporting portions 367 are provided at intervals in the circumferential direction.

[0090] The bottom main body portion 366 has a structure substantially similar to that of the support member 64 of the first embodiment, except that it has a bottom wall portion 364m. The bottom wall portion 364m expands in the radial direction. The radial outer edge portion of the bottom wall portion 364m is connected to the radial inner edge portion of the first annular portion 64a. The bottom wall portion 364m is provided with a first through hole 364k penetrating the bottom wall portion 364m in the axial direction. That is, the bottom portion 364 has a first through hole 364k penetrating the bottom portion 364 in the axial direction. As shown in FIG. 11, in this embodiment, the first through hole 364k is provided in the radial outer edge portion of the bottom wall portion 364m. The first through hole 364k is a rectangular shape with rounded corners when viewed in the axial direction. The peripheral portion of the first through hole 364k is a frame-shaped portion 364r protruding 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. That is, the bottom portion 364 has the elastic retaining portion 368. In this embodiment, the elastic retaining portion 368 is provided in a portion of the frame-shaped portion 364r located on the radially inner side. As shown in FIG. 10, the elastic retaining portion 368 has a first extending portion 368a, an arc portion 368b, a second extending portion 368c, and a pressing claw portion 368d. The first extending portion 368a protrudes upward from the frame-shaped portion 364r. The arc portion 368b is connected to an upper end portion of the first extending portion 368a. When viewed in the circumferential direction, the arc portion 368b extends in a semicircular arc shape that is convex upward from the upper end portion of the first extending portion 368a toward the radially outer side.

[0092] The second extension portion 368c extends downward from the radially outer end of the arc portion 368b. The second extension portion 368c is passed through the first through hole 364k in the axial direction. As a result, in this embodiment, a part of the elastic holder 368 is located inside the first through hole 364k. The entire elastic holder 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 pressing 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 pressing claw portion 368d is an inclined surface 368e that is located radially outward as it goes upward.

[0093] The elastic holder 368 is elastically deformable. In this embodiment, the elastic holder 368 is elastically deformable in the radial direction. More specifically, the second extending portion 368c is elastically deformable inward in the radial direction with the arc portion 368b as a fulcrum. As shown in Fig. 11, a pair of the elastic holders 368 are provided with a gap therebetween in the circumferential direction.

[0094] As shown in Fig. 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 when the conductive member 390 is composed of a plurality of members. The conductive member 390 has a main body portion 391, a coupling 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 a plate surface facing in the radial direction. The main body portion 391 has a through hole 391a that passes through the main body portion 391 in the radial direction. The through hole 391a extends in the axial direction.

[0095] As shown in FIG. 10 and FIG. 11, the main body 391 is passed through the first through hole 364k in the axial direction. Thus, the conductive member 390 is passed 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 holding portion 368 is in contact with the radially inner surface of the main body 391. Thus, the conductive member 390 is in contact with the elastic holding portion 368 and the inner surface of the first through hole 364k. Therefore, the conductive member 390 can be stably held in the first through hole 364k by the elastic holding portion 368. Furthermore, even if it becomes necessary to finely adjust 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 holding portion 368. Therefore, the conductive member 390 can be easily connected to the board 70. In this embodiment, the elastic holding 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 holding portion 368. Therefore, the conductive member 390 can be more stably held in the first through hole 364k.

[0096] As shown in FIG. 12, the connecting portion 392 is a plate-like portion extending from the lower end of the main body portion 391. The connecting portion 392 has a root portion 392a, a curved portion 392b, and a radially extending portion 392c. The root portion 392a protrudes downward from the lower end of the main body portion 391. The curved portion 392b extends downward from the lower end of the root portion 392a in a semicircular arc shape that is convex radially inward. That is, in this embodiment, the conductive member 390 has the curved portion 392b that is curved 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, it is easier to transmit the force applied to the conductive member 390 from the first housing 361 to the connection portion between the conductive member 390 and the board 70. In addition, the position of the conductive member 390 can be finely adjusted by elastically deforming the conductive member 390, making it easier to assemble the conductive member 390. The radially extending portion 392c extends radially outward from the lower end of the curved portion 392b. The radially extending portion 392c has a generally rectangular plate shape with the plate surface facing the axial direction.

[0097] The first connection portion 393 extends downward from the radially outer end of the radial extension portion 392c. The first connection portion 393 has an extension portion 393a connected to the radial extension portion 392c and a connection body portion 393b connected to the lower end of the extension portion 393a. The connection body portion 393b is substantially cylindrical and opens on both axial sides. The lower end of the extension portion 393a is connected to the radially inner portion of the connection body portion 393b. A slit 393c extending in the axial direction is provided in the radially outer portion of the connection body portion 393b. The slit 393c divides the connection body portion 393b in the circumferential direction centered on the central axis of the substantially cylindrical connection body portion 393b. By providing the slit 393c, the connection body portion 393b has a substantially C-shape that opens radially outward when viewed in the axial direction.

[0098] As shown in FIG. 10, the first housing 361 has a hole 361k that opens into the inside of the first housing 361. The hole 361k is provided in a connected portion 361p that is provided on the radially inner surface of the stator accommodating portion 361c in the first housing main 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 disposed opposite to the lower side of the second annular portion 364b with a gap therebetween.

[0099] The first connecting portion 393 is press-fitted into the hole 361k. Therefore, the first connecting portion 393 can be fixed to the first housing 361 by simply inserting the first connecting portion 393 into the hole 361k by press-fitting, and the first connecting portion 393 can be easily electrically connected to the first housing 361. In this embodiment, the connection main body 393b of the first connecting portion 393 is press-fitted into the hole 361k. Since the connection main body 393b is substantially cylindrical with a portion divided by the slit 393c, when the connection main body 393b is press-fitted into the hole 361k, the connection main body 393b is easily elastically deformed in a direction in which the slit 393c narrows. This makes it easier to press 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 from above by the second housing 362, and the first connection portion 393 can be prevented from slipping out of the hole portion 361k to the upper side. Furthermore, when the second housing 362 is attached to the first housing 361 from above, the second housing 362 can press the conductive member 390 from above, and the first connection portion 393 can be pushed into the hole portion 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 contacts the upper end of the first connecting portion 393 of the conductive member 390, that is, the upper end of the extension portion 393a. In other words, the contact portion 364p contacts the upper end of the first connecting portion 393. This allows the second housing 362 to suitably hold the first connecting portion 393 in the hole portion 361k. In addition, when the second housing 362 presses the first connecting portion 393 into the hole portion 361k, it is easy to suitably apply an axial force to the first connecting portion 393, and it is easy to suitably press the first connecting portion 393 into the hole portion 361k.

[0102] The second connection portion 394 has a plurality of connection terminal portions 394c penetrating the substrate 70. This makes it possible to increase the area over which the ground pattern 72 of the substrate 70 and the second connection portion 394 are connected. This makes it possible to easily and suitably connect the conductive member 390 electrically to the ground pattern 72. In this embodiment, the plurality of connection terminal portions 394c are each passed through a ground hole portion 71 provided in the substrate 70 in the axial direction. Each connection terminal portion 394c is electrically connected to a plated portion 71a in the ground hole portion 71 by, for example, solder.

[0103] As shown in FIG. 11, the multiple connection terminals 394c include a pair of connection terminals 394a at different circumferential positions and a connection terminal 394b at a different radial position from 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 of the pair of connection terminals 394a. The circumferential position of the connection terminals 394b is a circumferential position between the pair of connection terminals 394a. The connection terminals 394b are located on the upper side between the pair of elastic holders 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 holders 368.

[0104] <Fourth embodiment> 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 coupling portion 492, a first connecting portion 493, and a second connecting portion 394. The main body portion 491 is a plate-like member extending in the axial direction with the plate surface facing in the radial direction. The coupling portion 492 has a curved portion 492b that is curved in a direction that is convex radially inward from the lower end portion of the main body portion 491, and a radial extension portion 492c that extends radially outward from the lower end portion of the curved portion 492b.

[0105] The first connection portion 493 has a generally rectangular plate shape extending obliquely radially inward and downward from a radially outer end of the radial extension portion 492c. The first connection portion 493 is fixed to the inner surface of the first housing 461 by a bolt 469. Therefore, the first connection portion 493 can be firmly fixed to the first housing 461 by the axial force of the bolt 469, and the first connection portion 493 can be suitably electrically connected to the first housing 461. This allows the first connection portion 493 and the first housing 461 to be more suitably electrically connected to each other.

[0106] The bolt 469 is passed through a hole provided in the first connecting portion 493 and screwed into a female screw hole 461k provided in the first housing 461. That is, the first housing 461 has a female screw hole 461k into which the bolt 469 is screwed. The female screw hole 461k is provided in a connected portion 461p provided in the first housing 461. The connected portion 461p is provided on a radially inner surface of the stator accommodating portion 461c in the first housing main 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 inside of the first housing 461.

[0107] The conductive member 490 has a second through hole 491a penetrating 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 extending portion 492c. The second through hole 491a is provided in the circumferential center of each portion. By providing the second through hole 491a, the curved portion 492b is divided into two in the circumferential direction.

[0108] 14, a part of the second through hole 491a overlaps with the bolt 469 when viewed in the direction in which the bolt 469 is fastened into the female threaded hole 461k. Therefore, a tool such as a screwdriver for fastening the bolt 469 can be allowed to escape through the second through hole 491a, and the tool can be prevented from contacting the conductive member 490. This makes it easier to perform the task of fixing the first connection portion 493 to the first housing 461. In this embodiment, a radially inner end of a portion of the second through hole 491a provided on the curved portion 492b overlaps with a part of the head of the bolt 469 when viewed in the direction in which the bolt 469 is fastened into the female threaded hole 461k.

[0109] <Fifth embodiment> As shown in FIG. 15, in the rotating electric machine 510 of the pump 500 of this embodiment, the conductive member 590 has a fixing portion 596, a second connecting portion 594, and a cable 595. In this embodiment, the fixing portion 596 is a crimp terminal. The fixing portion 596 has a crimp portion 596a and a first connecting portion 593. The first connecting portion 593 is fixed to the inner surface of the first housing 461 by a bolt 569 in the same manner as the first connecting portion 493 of the fourth embodiment. As a result, the fixing portion 596 is fixed to the first housing 461. The cable 595 connects the fixing portion 596 and the second connecting portion 594. In this way, by using the cable 595 as the portion connecting the fixing portion 596 having the first connecting portion 593 and the second connecting portion 594, the degree of freedom of handling from the first connecting portion 593 to the second connecting portion 594 can be improved. Therefore, the conductive member 590 can be easily arranged.

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

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

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

[0113] The rotating electric machine to which the present invention is applied is not limited to a motor, and may be a generator. The use of the rotating electric machine is not particularly limited. The rotating electric machine may be mounted on equipment other than a pump. The use of the pump is not particularly limited, and may be mounted on equipment other than a vehicle.

[0114] The present technology can be configured as follows. (1) A rotor rotatable about a central axis, a stator facing the rotor with a gap therebetween, a board electrically connected to the stator, a first housing made of metal opening on one axial side and accommodating the stator therein, a second housing fixed to one axial side of the first housing, accommodating the board therein and having insulating properties, and a conductive member electrically connecting the board and the first housing, wherein the board 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 has a first housing main body portion that accommodates the stator therein, and a mounting portion that protrudes radially outward from the first housing main body portion. (3) A rotating electric machine as described in (1) or (2), wherein the second housing has a bottom portion located axially between the substrate and the stator, the bottom portion supports 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 portion in the axial direction. (4) A rotating electric machine as described in (3), wherein the bottom portion has a first through hole that penetrates the bottom portion in the axial direction and through which the conductive member is passed, and an elastic retaining portion, at least a portion of which is located inside the first through hole and is elastically deformable, and the conductive member is in contact with the elastic retaining portion and the inner surface of the first through hole. (5) A rotating electric machine according to any one of (1) to (4), wherein the conductive member includes a first member having the first connection portion and a second member having the second connection portion and in axial contact with the first member. (6) The rotating electric machine described in (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) A rotating electric machine as described in (6), wherein the second housing has a support member that supports the board from the other axial side and a cover member that covers the board from one axial side, and the second member penetrates the support member in the axial direction and is held by the support member. (8) A rotating electric machine as described in (6) or (7), further comprising an insulating member located on one axial side of a stator core in the stator, the insulating member located inside the first housing, a gap being provided radially between the insulating member and the first housing, the first member being supported from the other axial side by the insulating member and in contact with the radial outer surface of the insulating member, the first connection portion being elastically deformable in the radial direction, being located radially between the radial outer surface of the insulating member and the radial inner surface of the first housing, and in contact with the radial inner surface of the first housing. (9) A rotating electric machine as described in (8), wherein the first member has a supported portion that contacts the insulating member in the axial and radial directions, the elastic portion that protrudes to one axial side from a radially inner end of the supported portion, and a protruding portion that protrudes to one axial side from a radially outer end of the supported portion. (10) A rotating electric machine as described in (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 portion 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) A rotating electric machine according to any one of (1) to (4), wherein the conductive member has the first connection portion, a fixed portion fixed to the first housing, and a cable connecting the fixed portion and the second connection portion. (13) A rotating electric machine according to any one of (1) to (7), wherein the first housing has a hole portion opening into the interior of the first housing, and the first connection portion is pressed into the hole portion. (14) The rotating electric machine according to (13), wherein the hole portion opens to 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 portion is fixed to an inner surface of the first housing by a bolt. (16) The first housing has a female threaded hole that opens into the inside of the first housing and into which the bolt is fastened, 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 a direction in which the bolt is fastened into the female threaded hole. (17) The rotating electric machine according to any one of (1) to (16), wherein the conductive member has a curved portion that is curved 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 penetrating the substrate. (19) The rotating electric machine according to (18), wherein the plurality of connection terminal portions include a pair of connection terminal portions that are located at different circumferential positions from each other, and a connection terminal portion that is located at a different radial position from the pair of connection terminal portions. (20) A rotating electric machine according to any one of (1) to (19), a pump mechanism connected to the rotating electric machine; A pump comprising:

[0115] The configurations and methods described in this specification can be combined as appropriate within the scope of not being mutually inconsistent. [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 portion, 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 portion, 91b...elastic portion, 91c, 291c, 393, 493, 593...first connection portion, 91d...projection portion, 91i, 392b, 492b...curved portion, 92...second member, 92c, 394, 594...second connection portion, 100, 200, 300, 400, 500...pump, 361k...hole portion, 362a...cover portion, 364...bottom portion, 364k...first through hole, 364p...contact portion, 368...elastic retaining portion, 391a...through hole, 394a, 394b, 394c...connection terminal portion, 461k...female thread hole, 469, 569...bolt, 491a...second through hole, 595...cable, 596...fixing portion, J...center axis

Claims

1. A motor unit having a rotatable rotor with a shaft extending in the axial direction, and a stator facing the rotor with a radial gap between them, A circuit board electrically connected to the stator, A metal housing that houses the stator inside, A pump unit driven by the motor unit via the shaft, A conductive member that electrically connects the substrate and the housing, Equipped with, The motor unit is located on one axial side of the pump unit, The substrate has a ground pattern, The conductive member is Inside the housing, there is a first connection part that is electrically connected to the housing, A second connection part electrically connected to the ground pattern, An electric oil pump having

2. The electric oil pump according to claim 1, wherein the first connecting portion has a curved portion that protrudes in the other direction in the axial direction.

3. The first connecting portion has a first extended portion and a second extended portion that are radially opposite to each other with a gap in between. The electric oil pump according to claim 2, wherein the curved portion connects the first extended portion and the second extended portion.

4. The curved portion is arranged opposite to the stator on one axial side with a gap between them, as described in claim 2 of the electric oil pump.

5. The electric oil pump according to claim 1, wherein the conductive member has a contact projection that is pressed against the inside of the housing.

6. The electric oil pump according to claim 1, wherein the conductive member is elastically deformable.

7. The system includes a support member located between the stator and the substrate in the axial direction, The stator is, An annular stator core centered on the aforementioned shaft, Multiple coils attached to the stator core, An insulating member disposed between the stator core and the coil, It has, The electric oil pump according to claim 1, wherein at least a portion of the conductive member is supported by the support member.

8. The electric oil pump according to claim 5, wherein the contact projection is hemispherical in shape and convex radially outward.

9. The electric oil pump according to claim 5, wherein the contact projection protrudes radially outward and contacts the radially inner surface of the housing.

10. The conductive member is The first member having the first connecting portion, A second member having the second connecting portion and in contact with the first member, An electric oil pump according to any one of claims 1 to 9, having the following features.

11. The conductive member is The first member having the first connecting portion, A second member having the second connecting portion and in contact with the first member, It has, The electric oil pump according to claim 7, wherein the second member penetrates the support member in the axial direction.

12. The second connecting portion has a press-fit portion, The electric oil pump according to claim 1, wherein the substrate has a portion into which the press-fit portion is press-fitted.

13. The press-fit portion has a hole that penetrates the press-fit portion in the radial direction, The substrate has a grounding hole that penetrates the substrate, The electric oil pump according to claim 12, wherein the press-fit portion is press-fitted into the grounding hole portion.

14. The aforementioned housing is First inner diameter portion and A second inner diameter portion has an inner diameter dimension smaller than that of the first inner diameter portion and is located on the other axial side of the first inner diameter portion, It has, The electric oil pump according to claim 1, wherein the conductive member is in contact with the second inner diameter portion.

15. The electric oil pump according to claim 14, wherein the housing has a third inner diameter portion located axially between the first inner diameter portion and the second inner diameter portion, the inner diameter of which increases from the second inner diameter portion toward the first inner diameter portion.

16. The electric oil pump according to any one of claims 1 to 9, wherein the conductive member is composed of a plurality of members.

17. The electric oil pump according to any one of claims 1 to 9, wherein the conductive member comprises a first member and a second member.

18. The electric oil pump according to claim 17, wherein the first member contacts the second member in a deformed state.

19. The electric oil pump according to claim 17, wherein the first member has a plate-shaped contact portion that contacts the second member.

20. The substrate is provided with a cover member that covers one side in the axial direction, The electric oil pump according to claim 7, wherein the support member is housed inside the housing and the lid member.

21. The electric oil pump according to claim 1, wherein the second connection portion is located radially inward from the first connection portion.

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