Motor and pump equipment

Abstract

To provide a motor which can inhibit contact between a connector terminal and a stator when a resin sealing member is molded, and to provide a pump device.SOLUTION: A motor includes: a stator 5 disposed around a rotor 4; a resin sealing member 6 covering the stator 5 and including a cylinder part 65 which is open at the other side L2 along a rotation axis L; a connector terminal assembly 7 including connector terminals 71 and a resin holding part 72 holding the connector terminals 71; and a substrate 8 which is housed in the cylinder part 65 and in which the connector terminals 71 and a coil 53 of the stator 5 are connected. The connector terminal 71 includes an extension portion 73 extending from one side L1 of the substrate 8 to the radial outer side of the stator core 51 of the stator 5. The holding part 72 is covered with the resin sealing member 6 and covers the extension portion 73 in a portion overlapping with the stator core 51 when viewed in a direction orthogonal to the rotation axis L.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a motor and a pump device.

Background Art

[0002] The motor used in the pump device is described in Patent Document 1. The motor in this document includes a stator disposed around a rotor, a stator having a stator core and a coil wound around the stator core, a resin sealing member that covers the stator and has a cylindrical portion that opens on the other side along the rotation axis, a plurality of connector terminals covered by the resin sealing member, a substrate housed in the cylindrical portion, and the plurality of connector terminals and the coil are electrically connected from one side along the rotation axis. The resin sealing member is integrally formed with the stator and the connector terminals by insert molding using a mold.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above document, the plurality of connector terminals include an extending portion extending from one side of the substrate and a bent portion bent radially outward from one end of the extending portion. The extending portion extends to a position that does not overlap the stator core when viewed in a direction orthogonal to the rotation axis. The bent portion is located between the substrate and the stator core. The bent portion is covered by the resin sealing member, and the tip of the bent portion protrudes outward from the resin sealing member. The tip of the bent portion is a connector pin, and a connector for supplying power to the motor is connected to the tip of the bent portion.

[0005] Here, a motor is desired in which the connector pins are positioned so as to overlap with the stator core when viewed from a direction perpendicular to the axis of rotation. In this case, the extended portion of the connector terminals extends radially outward from the stator core and is covered together with the stator core by the resin sealing member. However, in such a configuration, when the resin sealing member is molded using a mold, the extended portion of the connector terminals may come into contact with the stator core due to the flow of the resin. A motor in which the resin sealing member is formed in a contact state will be a defective product.

[0006] In view of the above problems, the object of the present invention is to provide a motor that can suppress contact between the connector terminals and the stator core even when the connector terminals are extended to the radially outer side of the stator core, and a pump device using this motor. [Means for solving the problem]

[0007] To solve the above problems, the motor of the present invention comprises a rotor that rotates around a rotation axis, a stator arranged around the rotor and comprising a stator core and coils wound around the stator core, a resin sealing member that covers the stator and has a cylindrical portion that opens on the other side along the rotation axis, a connector terminal assembly that is partially covered by the resin sealing member and comprises a plurality of connector terminals and a resin holding portion that holds the plurality of connector terminals, and a substrate housed inside the cylindrical portion, to which the plurality of connector terminals and the coils of the stator are each electrically connected from one side along the rotation axis, wherein the plurality of connector terminals comprises an extended portion that extends from one side of the substrate to the radially outer side of the stator core and a bent portion that bends radially outward from the end of the extended portion on one side, and the holding portion is covered by the resin sealing member and is perpendicular to the rotation axis The extension portion is characterized by covering the portion that overlaps with the stator core when viewed from a particular direction.

[0008] According to the present invention, the connector terminal assembly is partially covered by a resin sealing member and comprises a plurality of connector terminals and a resin holding portion that holds the plurality of connector terminals. The plurality of connector terminals comprises an extended portion that extends from one side of the substrate to the radially outer side of the stator core and a bent portion that bends radially outward from one end of the extended portion. The holding portion is covered by the resin sealing member and covers the extended portion in the portion that overlaps with the stator core when viewed from a direction perpendicular to the rotation axis. In this way, when viewed from a direction perpendicular to the rotation axis, the extended portion in the portion that overlaps with the stator core is covered by the holding portion, so when the resin sealing member of the motor is molded using a mold, the extended portions of the plurality of connector terminals do not come into contact with the stator core. This makes it possible to position the bent portion radially outward of the stator core and suppresses the occurrence of defective motors.

[0009] In the present invention, it is preferable that the first end face on the other side of the holding portion is exposed from the resin sealing member toward the interior of the cylindrical portion. In this way, the connector terminal assembly can be supported by the mold when the resin sealing member of the motor is molded. This makes it possible to improve the positioning accuracy of the connector terminal assembly relative to the resin sealing member.

[0010] In the present invention, the second end face on the other side of the stator core is exposed from the resin sealing member toward the interior of the cylindrical portion, and it is preferable that the first end face and the second end face coincide when viewed from a direction perpendicular to the rotation axis. In this way, the stator core and connector terminal assembly can be supported by the mold when the resin sealing member of the motor is molded. This makes it possible to improve the positioning accuracy of the stator core and connector terminal assembly relative to the resin sealing member. Furthermore, since the first end face and the second end face coincide when viewed from a direction perpendicular to the rotation axis, the positioning accuracy of the connector terminal assembly relative to the stator core in the direction along the rotation axis can be improved.

[0011] In the present invention, it is preferable that the holding portion comprises a main body portion that covers the extended portion and flange portions that protrude from the other end of the main body portion on both sides in the circumferential direction around the rotation axis. Therefore, since the flange portions protrude from the main body portion on both sides in the circumferential direction, the first end face can be made wider, making it easier to support the connector terminal assembly with a mold.

[0012] In the present invention, it is preferable that the retaining portion abuts against the outer circumferential surface of the stator core. This allows for higher radial positioning accuracy of the connector terminal assembly relative to the stator core. In this case, it is preferable that the retaining portion has a side wall surface corresponding to the shape of the outer circumferential surface of the stator core, and that the side wall surface abuts against the outer circumferential surface of the stator core. This makes it easier to bring the retaining portion into contact with the outer circumferential surface of the stator core.

[0013] The motor according to the present invention can be used in a pump device, in which case the pump device has an impeller that is rotationally driven by the motor. [Effects of the Invention]

[0014] In this invention, when viewed from a direction perpendicular to the axis of rotation, the extended portion that overlaps with the stator core is covered by the holding portion. Therefore, even if the extended portions of multiple connector terminals extend radially outward from the stator core, the extended portions of the multiple connector terminals do not come into contact with the stator core when the resin sealing member of the motor is molded using a mold. This makes it possible to suppress the occurrence of defective motors. [Brief explanation of the drawing]

[0015] [Figure 1] This is a cross-sectional view of a pump device to which the present invention is applied. [Figure 2] This is a perspective view of the motor from one side. [Figure 3] This is a perspective view of the motor from the other side. [Figure 4]It is an exploded perspective view of a motor showing the state with the cover removed. [Figure 5] It is an exploded perspective view of a motor showing the state with the substrate removed from the state shown in FIG. 4. [Figure 6] It is a plan view of the resin-sealed member seen from the other side. [Figure 7] It is a partial cross-sectional view of the motor. [Figure 8] It is a perspective view of the rotor, stator, and connector terminal assembly. [Figure 9] It is a perspective view of the connector terminal assembly. [Figure 10] It is a cross-sectional perspective view of the connector terminal assembly. [Figure 11] It is a cross-sectional perspective view showing the relationship between the stator and the connector terminal assembly.

Embodiments for Carrying out the Invention

[0016] Hereinafter, a pump device including an impeller according to the present invention will be described with reference to the drawings. In the following description, L1 is attached to one side along the rotation axis L, and L2 is attached to the other side for explanation. Also, in the following description, the radial direction and the circumferential direction centered on the rotation axis are simply referred to as the "radial direction" and the "circumferential direction", respectively.

[0017] (Pump Device) FIG. 1 is a cross-sectional view of a pump device 100 to which the present invention is applied. As shown in FIG. 1, the pump device 100 includes a motor 1 having a rotor 4 and a stator 5, a case 2 disposed on one side L1 along the rotation axis L with respect to the motor 1, and an impeller 3 disposed in a pump chamber 20 inside the case 2.

[0018] The case 2 includes a suction pipe 21 extending along the rotation axis L and a discharge pipe (not shown) extending in a direction orthogonal to the rotation axis L. The suction pipe 21 is provided concentrically with respect to the rotation axis L. The discharge pipe is located on the outer side in the radial direction of the impeller 3.

[0019] The pump device 100 moves the fluid in the pump chamber 20 by the impeller 3 rotating together with the rotor 4 around the rotation axis L. As a result of the rotation of the impeller 3 inside the pump chamber 20, a negative pressure is created inside the pump chamber 20, causing the fluid to be drawn into the pump chamber 20 from the suction pipe 21 and discharged from the discharge pipe.

[0020] (motor) Figure 2 is a perspective view of motor 1 seen from one side L1. Figure 3 is a perspective view of motor 1 seen from the other side L2. Figure 4 is an exploded perspective view of motor 1 with the cover member 9 removed. Figure 5 is an exploded perspective view of motor 1 with the circuit board 8 removed from the state shown in Figure 4. Figure 6 is a plan view of the resin sealing member 6 seen from the other side L2. Figure 7 is a partial cross-sectional view of motor 1. Figure 8 is a perspective view of the rotor 4, stator 5, and connector terminal assembly 7.

[0021] As shown in Figures 2 and 3, the motor 1 is cylindrical. As shown in Figures 1 and 7, the motor 1 comprises a rotor 4, a stator 5 arranged around the rotor 4, a resin sealing member 6 made of resin that covers the stator 5, a connector terminal assembly 7 partially covered by the resin sealing member 6, a substrate 8 to which a plurality of connector terminals 71 of the connector terminal assembly 7 and the coil 53 of the stator 5 are connected, and a cover member 9 that covers the substrate 8 from the other side L2.

[0022] As shown in Figures 1 and 7, the rotor 4 includes a cylindrical portion 40 that extends along the rotation axis L from a position facing the stator 5 radially inward to the pump chamber 20. It opens in the pump chamber 20. A cylindrical magnet 10 is held on the outer surface of the cylindrical portion 40, facing the stator 5 radially inward. The magnet 10 is, for example, a neodymium bonded magnet.

[0023] A disc-shaped flange portion 41 is formed at one end L1 of the cylindrical portion 40. As shown in Figure 1, a disc 31 is connected to the flange portion 41 from one end L1. A central hole 310 is formed in the center of the disc 31. On the surface of the disc 31 facing the flange portion 41, a plurality of blade portions 32 are formed at equal angular intervals, extending radially outward in an arc shape from around the central hole 310. The disc 31 is fixed to the flange portion 41 via the blade portions 32. Thus, the flange portion 41 and the disc 31 constitute the impeller 3 connected to the cylindrical portion 40 of the rotor 4.

[0024] As shown in Figures 1 and 7, a cylindrical radial bearing 11 is held radially inside the cylindrical portion 40. The rotor 4 is rotatably supported on the support shaft 12 via the radial bearing 11. The other end L2 of the support shaft 12 is held in a shaft hole 63a formed in the bottom 63 of the resin sealing member 6. An annular plate member 13 is attached to one end L1 of the support shaft 12. The plate member 13 abuts against the one end L1 of the radial bearing 11.

[0025] As shown in Figures 1, 7, and 8, the stator 5 has a stator core 51 and coils 53 wound around the stator core 51 via an insulator 52. As shown in Figure 8, the stator core 51 has an annular portion 54 surrounding the rotor 4 and a plurality of salient poles 55 projecting radially inward from the annular portion 54. As shown in Figure 1, the coils 53 are wound between a radially inward first flange portion 521 and a radially outward second flange portion 522 of the insulator 52 covering the salient poles 55. In this embodiment, the motor 1 is a three-phase motor, and the coils 53 include U-phase coils, V-phase coils, and W-phase coils.

[0026] As shown in Figure 8, one end L of the insulator 52 holds three winding terminals 56 and one common terminal 57. One end of a winding that makes up three coils 53 connected in series is connected to each of the three winding terminals 56, and the other end is electrically connected to the common terminal 57.

[0027] As shown in Figures 7 and 8, the connector terminal assembly 7 comprises a plurality of connector terminals 71 and a holding portion 72 that holds the plurality of connector terminals 71. In this embodiment, there are four connector terminals 71. The connector terminals 71 are made of metal plate members. The connector terminals 71 comprise an extended portion 73 that extends from one side L1 of the substrate 8 to the radially outer side of the stator core 51, and a bent portion 74 that bends radially outward from the end of one side L1 of the extended portion 73. The tip portion 74a of the bent portion 74 protrudes from the resin sealing member 6. The tip portion 74a of the bent portion 74 is a connector pin. As shown in Figure 5, the extended portion 73 protrudes from the resin sealing member 6 to the other side L2 and is exposed.

[0028] As shown in Figures 1 and 7, the resin sealing member 6 comprises a first partition wall portion 61 that opposes the side wall 23 of the pump chamber 20, a second partition wall portion 62 interposed between the stator 5 and the magnet 10, a bottom portion 63 that faces the other end face L2 of the rotor 4, and a cylindrical body portion 64 that covers the stator 5 from the radially outside. In this embodiment, the resin sealing member 6 is a resin sealing member that covers the stator 5 from the radially outside and radially inside, as well as from both sides in the direction along the rotation axis L.

[0029] The resin sealing member 6 is formed by insert molding using a mold. Specifically, after the stator 5 and connector terminal assembly 7 are placed in the mold, resin is poured into the mold to form the resin sealing member 6 so that it becomes one with the stator 5 and connector terminal assembly 7. The material of the resin encapsulating member 6 is, for example, polyphenylene sulfide (PPS: Poly Phenylene sulfide, BMC (Bulk Molding Compound), etc., can be used.

[0030] As shown in Figures 1 and 5, the body portion 64 includes a cylindrical portion 65 that opens to the other side L2. The substrate 8 is housed inside the cylindrical portion 65. The inner circumferential surface of the cylindrical portion 65 is provided with an annular stepped portion 66 that protrudes radially inward. Inside the cylindrical portion 65, there is a mounting portion 67 that protrudes from the bottom portion 63 to the other side L2.

[0031] As shown in Figures 2, 3, and 7, the body portion 64 includes a connector housing 68 that covers the tip portion 74a of the connector terminal 71 that is electrically connected to the substrate 8. As shown in Figure 7, when viewed from a direction perpendicular to the rotation axis L, the connector housing 68 overlaps with the stator 5.

[0032] As shown in Figures 1 and 4, the substrate 8 is provided with circuits for controlling the power supply to the coil 53. The substrate 8 is placed on the stepped portion 66 and the mounting portion 67 from the other side L2 and fixed to the mounting portion 67 by screws 15.

[0033] The extended portion 73 of the connector terminal 71 is electrically connected to the substrate 8 from one side L1. Additionally, the winding terminal 56 and the common terminal 57 are each electrically connected to the substrate 8 from one side L1. In other words, the coil 53 is electrically connected to the substrate 8 from one side L1 via the winding terminal 56 and the common terminal 57. In this embodiment, the extended portion 73 of the connector terminal 71, the winding terminal 56, and the common terminal 57 are electrically connected to the substrate 8 by solder.

[0034] The cover member 9 is made of resin. In this embodiment, the cover member 9 is made of the same resin as the resin sealing member 6. The cover member 9 covers the cylindrical portion 65 from the other side L2. The cover member 9 is fixed to the cylindrical portion 65 by welding. Ultrasonic welding or vibration welding can be used as the welding method.

[0035] (Details of the connector terminal assembly) Figure 9 is a perspective view of the connector terminal assembly 7. Figure 10 is a cross-sectional perspective view of the connector terminal assembly 7.

[0036] As shown in Figures 5 and 7, the connector terminal assembly 7 is covered by the resin sealing member 6, except for the other end L2 of the extended portion 73 and the tip 74a of the bent portion 74. Correspondingly, a projection 60 is formed inside the cylindrical portion 65 to cover the extended portion 73 of the connector terminal assembly 7. The projection 60 protrudes inward from the cylindrical portion 65.

[0037] As shown in Figures 7, 9, and 10, the extended portion 73 comprises a first portion 731 electrically connected to the substrate 8, a second portion 732 bent radially outward from the other end L2 of the first portion 731, and a third portion 733 extending from the end of the second portion 732 to the other L2. The one end L1 of the first portion 731 is electrically connected to the substrate 8 by solder. The third portion 733 extends to the other end L2 of the stator core 51.

[0038] The retaining portion 72 is made of resin. In this embodiment, the retaining portion 72 is made of the same resin as the resin sealing member 6. As shown in Figures 7 to 10, the retaining portion 72 comprises a main body portion 721 and flange portions 722 that protrude circumferentially from the other end L2 of the main body portion 721. The main body portion 721 comprises a first portion 723 that covers the extended portion 73 and a second portion 724 that bends radially outward from the end L1 of the first portion 723 to cover the bent portion 74. More specifically Specifically, the first portion 723 of the main body 721 covers the third portion 733 of the extended portion 73 in the portion that overlaps with the stator core 51 when viewed from a direction perpendicular to the rotation axis L. The second portion 724 of the main body 721 covers the bent portion 74, except for the tip portion 74a of the bent portion 74. Note that the main body 721 may also be configured without the second portion 724.

[0039] The holding portion 72 includes a first end face 72a on the other side L2 and a side wall surface 72b corresponding to the shape of the outer circumferential surface 51b of the annular portion 54. The first end face 72a is a plane perpendicular to the rotation axis L. As shown in Figures 7 and 8, the first end face 72a coincides with the second end face 51a on the other side L2 of the stator core 51 when viewed from a direction perpendicular to the rotation axis L. As shown in Figures 8 and 9, the side wall surface 72b has a concave shape corresponding to the circular shape of the outer circumferential surface 51b and abuts against the outer circumferential surface 51b.

[0040] Here, Figure 11 is a cross-sectional perspective view showing the relationship between the stator 5 and the connector terminal assembly 7. As shown in Figures 6 and 11, holes 69 are provided at both radial ends of the projection 60 covering the connector terminal assembly 7 inside the cylindrical portion 65. The holes 69 penetrate the bottom portion 63, and the first end face 72a and the second end face 51a are exposed from the resin sealing member 6 toward the inside of the cylindrical portion 65. Also, as shown in Figure 11, a recess 60a is formed on the other end face L2 of the projection 60, recessed toward one side L1. The recess 60a extends in the circumferential direction. The second portion 732 is exposed from the recess 60a. This allows the second portion 732 of the connector terminal 71 to be supported by the mold when the resin sealing member 6 of the motor 1 is molded, thereby improving the positioning accuracy of the connector terminal assembly 7 relative to the resin sealing member 6.

[0041] (Effects and Benefits) In this embodiment, the connector terminal assembly 7 is partially covered by the resin sealing member 6 and includes a plurality of connector terminals 71 and a resin holding portion 72 that holds the plurality of connector terminals 71. The plurality of connector terminals 71 include an extended portion 73 that extends from one side L1 of the substrate 8 to the radially outer side of the stator core 51, and a bent portion 74 that bends radially outward from the end of one side L1 of the extended portion 73. The holding portion 72 is covered by the resin sealing member 6 and covers the extended portion 73 in the portion that overlaps with the stator core 51 when viewed from a direction perpendicular to the rotation axis L. Therefore, when viewed from a direction perpendicular to the rotation axis L, the extended portion 73 in the portion that overlaps with the stator core 51 is covered by the holding portion 72, so when the resin sealing member 6 of the motor 1 is molded, the extended portions 73 of the plurality of connector terminals 71 do not come into contact with the stator core 51. This makes it possible to position the tip 74a (connector pin) of the bent portion 74 on the radially outer side of the stator core 51, and also helps to suppress the occurrence of defective motors 1.

[0042] In this embodiment, the first end face 72a of the other side L2 of the holding portion 72 is exposed from the resin sealing member 6 toward the interior of the cylindrical portion 65. Therefore, when the resin sealing member 6 of the motor 1 is molded, the connector terminal assembly 7 can be supported by the mold. This makes it possible to improve the positioning accuracy of the connector terminal assembly 7 relative to the resin sealing member 6.

[0043] In this embodiment, the second end face 51a on the other side L2 of the stator core 51 is exposed from the resin sealing member 6 toward the interior of the cylindrical portion 65. When viewed from a direction perpendicular to the rotation axis L, the first end face 72a and the second end face 51a coincide. Therefore, when the resin sealing member 6 of the motor 1 is molded, the stator core 51 and the connector terminal assembly 7 can be supported by the mold. This allows for high positioning accuracy of the stator core 51 and the connector terminal assembly 7 relative to the resin sealing member 6. Furthermore, since the first end face 72a and the second end face 51a coincide when viewed from a direction perpendicular to the rotation axis L, the positioning accuracy of the connector terminal assembly 7 relative to the stator core 51 in the direction along the rotation axis L can be increased.

[0044] In this embodiment, the holding portion 72 comprises a main body portion 721 that covers the extended portion 73, and flange portions 722 that protrude circumferentially from the other end L2 of the main body portion 721 on both sides. Therefore, since the flange portions 722 protrude circumferentially from the main body portion 721 on both sides, the first end face 72a can be made wider, making it easier to support the connector terminal assembly 7 with a mold.

[0045] In this embodiment, the holding portion 72 is provided with a side wall surface 72b that corresponds to the shape of the outer circumferential surface 51b of the stator core 51. The side wall surface 72b abuts against the outer circumferential surface 51b of the stator core 51. Therefore, it is easy to bring the holding portion 72 into contact with the outer circumferential surface 51b of the stator core 51, and thus the radial positioning accuracy of the connector terminal assembly 7 relative to the stator core 51 can be improved.

[0046] Furthermore, this technology can be configured as follows:

[0047] (1) A rotor that rotates around a rotation axis, A stator is arranged around the rotor and comprises a stator core and coils wound around the stator core. A resin sealing member that covers the stator and has a cylindrical portion that opens on the other side along the rotation axis, A connector terminal assembly is provided, which is partially covered by the resin sealing member and includes a plurality of connector terminals and a resin holding part for holding the plurality of connector terminals, A circuit board is housed inside the cylindrical portion, and the plurality of connector terminals and the stator coil are each electrically connected from one side along the rotation axis, It has, Each of the aforementioned plurality of connector terminals comprises an extended portion that extends from one side of the substrate to the radially outer side of the stator core, and a bent portion that bends radially outward from the end of the extended portion on one side. The motor is characterized in that the holding portion is covered by the resin sealing member, and the extended portion is covered in the portion that overlaps with the stator core when viewed from a direction perpendicular to the rotation axis.

[0048] (2) The motor according to (2), characterized in that the first end face on the other side of the holding portion is exposed from the resin sealing member toward the interior of the cylindrical portion.

[0049] (3) The second end face on the other side of the stator core is exposed from the resin sealing member toward the interior of the cylindrical portion. The motor according to (2), characterized in that the first end face and the second end face coincide when viewed from a direction perpendicular to the rotation axis.

[0050] (4) The motor according to any one of (1) to (3), characterized in that the holding portion comprises a main body portion that covers the extended portion and flange portions that protrude from the other end of the main body portion on both sides in the circumferential direction around the rotation axis.

[0051] (5) The motor according to any one of (1) to (4), characterized in that the holding portion abuts against the outer circumferential surface of the stator core.

[0052] (6) The retaining portion has a side wall surface corresponding to the shape of the outer circumferential surface of the stator core, The motor according to (5), characterized in that the side wall surface abuts against the outer circumferential surface of the stator core.

[0053] (7) A pump device equipped with a motor as described in any of (1) to (6), A pump device characterized by having an impeller that is rotationally driven by the motor. [Explanation of Symbols]

[0054] 1...Motor, 2...Case, 3...Impeller, 4...Rotor, 5...Stator, 6...Resin sealing member, 7...Connector terminal assembly, 8...Circular board, 9...Cover member, 10...Magnet, 11...Radial bearing, 12...Support shaft, 13...Plate member, 15...Screw, 20...Pump chamber, 21...Suction pipe, 23...Side wall, 31...Disc, 32...Blade section, 40...Cylindrical section, 41...Flange section, 51...Stator core, 51a...Second end face, 51b...Outer circumference, 52...Insulator, 53...Coil, 54...Ring section, 55...Sailing pole, 56...Winding terminal, 57...Common terminal, 60...Protrusion, 60 a...recess, 61...first partition, 62...second partition, 63...bottom, 63a...shaft hole, 64...body, 65...tube, 66...step, 67...mounting part, 68...connector housing, 69...hole, 71...connector terminal, 72...holding part, 72a...first end face, 72b...side wall, 73...extended part, 74...bent part, 74a...tip, 100...pump device, 310...central hole, 521...first flange, 522...second flange, 721...main body, 722...flange, 723...first part, 724...second part, 731...first part, 732...second part, 733...third part

Claims

1. A rotor that rotates around a rotation axis, A stator is arranged around the rotor and comprises a stator core and coils wound around the stator core. A resin sealing member that covers the stator and has a cylindrical portion that opens on the other side along the rotation axis, A connector terminal assembly is provided, which is partially covered by the resin sealing member and includes a plurality of connector terminals and a resin holding part for holding the plurality of connector terminals, A circuit board is housed inside the cylindrical portion, and the plurality of connector terminals and the stator coil are each electrically connected from one side along the rotation axis, It has, Each of the aforementioned plurality of connector terminals comprises an extended portion that extends from one side of the substrate to the radially outer side of the stator core, and a bent portion that bends radially outward from the end of the extended portion on one side. The motor is characterized in that the holding portion is covered by the resin sealing member, and the extended portion is covered in the portion that overlaps with the stator core when viewed from a direction perpendicular to the rotation axis.

2. The motor according to claim 1, characterized in that the first end face on the other side of the holding portion is exposed from the resin sealing member toward the inside of the cylindrical portion.

3. The second end face on the other side of the stator core is exposed from the resin sealing member toward the interior of the cylindrical portion. The motor according to claim 2, characterized in that the first end face and the second end face coincide when viewed from a direction perpendicular to the rotation axis.

4. The motor according to claim 1, characterized in that the holding portion comprises a main body portion that covers the extended portion and flange portions that protrude from the other end of the main body portion on both sides in the circumferential direction around the rotation axis.

5. The motor according to claim 4, characterized in that the holding portion abuts against the outer circumferential surface of the stator core.

6. The retaining portion has a side wall surface corresponding to the shape of the outer circumferential surface of the stator core, The motor according to claim 5, characterized in that the side wall surface abuts against the outer circumferential surface of the stator core.

7. A pump device comprising a motor according to any one of claims 1 to 6, A pump device characterized by having an impeller that is rotationally driven by the motor.

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