Rotating electric motor

Abstract

The present invention relates to a stator subassembly with a connector, the stator subassembly with a connector comprising: a stator subassembly and a connector; the stator subassembly comprising a stator core and a rigid wiring substrate; the connector being fixed to a connector assembly portion of the rigid wiring substrate in a manner facing the stator core in a radial direction of a frame. A groove is formed on the inner circumference of the frame, the groove extending axially from an axial opening and accommodating the connector and the connector assembly portion. A window is formed on the frame, the window being used to overlap a mating connector with the connector accommodated in the groove. The window is open to the outer surface of the frame and the inner surface of the groove, and has a seamless inner circumference.

Description

Technical Field

[0001] The present invention relates to a rotating electric motor. Background Art

[0002] Patent Document 1 (Japanese Patent Gazette No. 6561308) discloses a method of assembling a bracket by connecting the wire connection portion (base plate) of a frame to a connector using a wire or similar device. However, the distance from the end of the frame to the wire connection plate is long, making it difficult to work with. This is also because the connector cannot be inserted into the frame after its receiving portion is assembled to the stator, resulting in poor workability.

[0003] Patent Document 2 (Japanese Patent Publication No. 5874934) and Patent Document 3 (Japanese Patent Publication No. 6187788) disclose methods of first attaching a connector to the wire connection portion and then inserting it into the frame. However, because the connector protrudes axially relative to the frame, the overall length increases, making miniaturization impossible. Summary of the Invention

[0004] An object of the present invention is to provide a technology for miniaturization and a technology for accommodating an intermediate assembly in a cylindrical housing even when a connector is mounted on the intermediate assembly so as to face the intermediate assembly in the radial direction of the cylindrical housing.

[0005] According to aspects of the present invention, there is provided a rotating electric motor, characterized in that it comprises:

[0006] accommodating objects; and

[0007] The stator frame is cylindrical and accommodates the object; wherein,

[0008] The accommodated objects include: intermediate components and connectors;

[0009] The intermediate component includes: a stator core and a rigid wiring substrate;

[0010] The rigid wiring substrate is arranged to face the stator core in the axial direction, and the rigid wiring substrate includes: an annular wiring substrate body and a connector mounting portion, the connector mounting portion protruding radially outward from the wiring substrate body;

[0011] In the radial direction of the stator frame, the connector is fixed to the connector assembly portion of the rigid wiring board in a manner facing the stator core, the connector comprising: a contact and a housing, the contact being welded to the connector assembly portion, and the housing holding the contact;

[0012] A groove is formed on the inner circumferential surface of the stator frame, the groove extending from the axial opening toward the axial direction and accommodating the connector and the connector assembly portion;

[0013] The stator frame is formed with a window portion, the window portion being used to overlap the mating side connector with the connector accommodated in the groove portion;

[0014] The window portion opens toward the outer surface of the stator frame and the inner surface of the groove portion, and has a seamless inner peripheral surface.

[0015] Preferably, the contacts of the connector include substrate connection portions that are soldered to the connector mounting portion of the rigid wiring substrate, and the intermediate component and the substrate connection portions of the contacts of the connector are both sealed with resin.

[0016] Preferably, the outer surface of the stator frame forms a planar sealing surface, and the inner surface of the groove portion includes a top surface parallel to the sealing surface.

[0017] Preferably, the stator frame includes a raised portion, the raised portion raised outward in the radial direction, and the window portion is formed in the raised portion.

[0018] Preferably, the contact member is in the shape of a flat plate.

[0019] Preferably, the housing is provided with a pin for positioning or fixing.

[0020] The present invention can achieve a technology for miniaturization and a technology for accommodating the intermediate assembly in the cylindrical housing even after the connector is mounted on the intermediate assembly so as to face the intermediate assembly in the radial direction of the cylindrical housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a perspective view of a rotary electric motor having a holding brake (first embodiment).

[0022] Figure 2 It is a perspective view of a rotary electric motor (first embodiment).

[0023] Figure 3 This is an exploded view of the stator (first embodiment).

[0024] Figure 4 It is a perspective view of the frame (first embodiment).

[0025] Figure 5 It is a partial cross-sectional perspective view of the frame (first embodiment).

[0026] Figure 6It is a perspective view of the frame as viewed from another angle (first embodiment).

[0027] Figure 7 It is a right side view of the frame (first embodiment).

[0028] Figure 8 It is a top view of the frame (first embodiment).

[0029] Figure 9 It is a perspective view of a stator subassembly with a connector before resin sealing (first embodiment).

[0030] Figure 10 for Figure 9 An enlarged view of part A of (first embodiment).

[0031] Figure 11 It is a perspective view of the connector (first embodiment).

[0032] Figure 12 It is a perspective view of the stator subassembly with the connector after resin sealing (first embodiment).

[0033] Figure 13 It is a perspective view of the stator (first embodiment).

[0034] Figure 14 It is a top view of the stator (first embodiment).

[0035] Figure 15 It is a perspective view of the stator (second embodiment).

[0036] Figure 16 It is a perspective view of a general electrical device (third embodiment).

[0037] Explanation of symbols

[0038] 1: Rotating motor with holding brake

[0039] 2: Rotating motor

[0040] 3: Holding brake

[0041] 4: Encoder

[0042] 5: External connector (connector on the other side)

[0043] 10: Stator

[0044] 11: Rotor

[0045] 11A: Output shaft

[0046] 12: Stator subassembly with connector (to accommodate an object)

[0047] 13: Frame (stator frame)

[0048] 13A: Axial end face

[0049] 14: Perimeter wall

[0050] 15: Bottom

[0051] 16: Opening

[0052] 17: Inner circumference

[0053] 18: Outer surface

[0054] 19: Sealing surface (outer surface)

[0055] 20: Female thread

[0056] 25: Groove

[0057] 26: Top surface (inner surface)

[0058] 27: Inside side

[0059] 30: Window

[0060] 30A: Inner surface

[0061] 31: Liang Department

[0062] 35: flange

[0063] 36: Through hole

[0064] 50: stator sub-assembly (intermediate assembly)

[0065] 51: Connector

[0066] 52: stator core

[0067] 53: Insulator

[0068] 54: Coil

[0069] 55: Wiring board

[0070] 56: Iron core body

[0071] 57: Tooth

[0072] 58: Wiring board body

[0073] 59: Connector assembly department

[0074] 59A: Upper surface

[0075] 59B: Lower surface

[0076] 60: Electrode pad

[0077] 61: Positioning hole

[0078] 70: Contact

[0079] 71: Shell

[0080] 72: Substrate connection part

[0081] 73: Contact Department

[0082] 74: Maintenance Department

[0083] 80: Buried Department

[0084] 81: Undertaking Department

[0085] 82: Positioning pin

[0086] 90: General electrical equipment

[0087] 91: Device

[0088] 92: Intermediate Component

[0089] 93: Connector

[0090] 94: Container frame

[0091] 94A: Inner surface

[0092] 94B: Open

[0093] 95: Groove

[0094] 96: Window

[0095] 96A: Inner circumferential surface DETAILED DESCRIPTION

[0096] (First embodiment)

[0097] The following reference Figures 1 to 14 , describing the first embodiment of the present invention.

[0098] Figure 1 FIG is an oblique view of a rotating motor 1 having a holding brake. Figure 1 As shown, the rotary motor 1 with a holding brake includes a rotary motor 2 , a holding brake 3 and an encoder 4 .

[0099] The rotating motor 2 is a three-phase synchronous motor and is driven to rotate by three-phase AC power supplied from an external connector 5. The rotating motor 2 may be a three-phase induction motor or may be driven to rotate by single-phase AC power.

[0100] Figure 2 It is an oblique view of the rotating motor 2. Figure 2As shown, the rotating motor 2 includes a stator 10 and a rotor 11. In this specification, the radial direction of the rotating motor 2 is simply referred to as the radial direction. Similarly, the axial direction of the rotating motor 2 is simply referred to as the axial direction.

[0101] like Figure 2 and Figure 3 As shown, the stator 10 includes a stator subassembly 12 (accommodation object) having a connector and a cylindrical frame 13 (stator frame). The cylindrical frame 13 accommodates the stator subassembly 12 having a connector.

[0102] Figures 4 to 8 The frame 13 is displayed. Figures 4 to 6 As shown, the frame 13 is a bottomed cylindrical shape. That is, the frame 13 includes a cylindrical peripheral wall 14 and a bottom 15. The frame 13 is made of a metal such as aluminum. Alternatively, the frame 13 may be made of a resin.

[0103] The peripheral wall 14 extends in the axial direction and has a cylindrical shape. The peripheral wall 14 has an opening 16, which opens in the axial direction away from the bottom 15. The peripheral wall 14 has the opening 16 in the axial direction. The peripheral wall 14 includes an inner peripheral surface 17 with a circular cross-section and an outer peripheral surface 18 (outer surface) with a rectangular cross-section.

[0104] like Figure 4 、 Figure 7 ,and Figure 8 As shown, a planar sealing surface 19 is provided on the outer peripheral surface 18. The sealing surface 19 is formed into a seamless annular shape. Figure 4 As shown, the sealing surface 19 is formed with a plurality of female threads 20 , and the female threads 20 are used to install the external connector 5 on the frame 13 .

[0105] like Figure 6 and Figure 7 As shown in FIG. 1 , the inner peripheral surface 17 of the peripheral wall 14 has a groove 25. Figure 7 As shown in FIG. 1 , the groove portion 25 is formed to be recessed from the inner peripheral surface 17 toward the sealing surface 19. Figure 6 and Figure 8 As shown, the groove 25 is formed to extend in the axial direction from the opening 16 of the frame 13 toward the bottom 15. The groove 25 is formed to extend in the axial direction from the axial end surface 13A of the frame 13 toward the bottom 15. The groove 25 extends from the opening 16 of the frame 13 to the center of the axial direction of the peripheral wall 14. Figure 7As shown, the groove portion 25 includes: a top surface 26, which is an inner surface parallel to the sealing surface 19; and two inner side surfaces 27, which are inner surfaces orthogonal to the top surface 26. Therefore, the groove portion 25 is separated by the top surface 26 and the two inner side surfaces 27. In the radial direction, the top surface 26 is away from the inner peripheral surface 17. In other words, the top surface 26 is farther away from the inner peripheral surface 17 than from the top surface 26. Figure 7 The inner peripheral surface 17, which is circular when viewed from one side, is located further outward in the radial direction. The groove 25 opens toward the inner peripheral surface 17. The groove 25 opens toward the inner side in the radial direction. Figure 6 As shown, the groove portion 25 opens toward the axial end surface 13A of the frame body 13 .

[0106] like Figure 4 、 Figure 5 、 Figure 8 As shown, the window portion 30 is formed on the peripheral wall 14 of the frame 13. The window portion 30 is rectangular when viewed from above. Figure 7 The sealing surface 19 shown is open to the top surface 26 of the groove 25. The window 30 is a through hole that penetrates the peripheral wall 14 in the radial direction. The window 30 is a through hole that penetrates the peripheral wall 14 in a direction perpendicular to the axial direction. Figure 4 As shown in FIG. 1 , the window portion 30 is formed away from the opening 16 in the axial direction. Figure 8 As shown in FIG. 1 , the sealing surface 19 surrounds the window portion 30 seamlessly when viewed from above. Figure 8 In the top view of FIG, the peripheral wall 14 can be considered to have a beam portion 31 between the window portion 30 and the opening 16. The presence of the beam portion 31 realizes the seamless annular sealing surface 19. The window portion 30 has a seamless inner peripheral surface 30A.

[0107] like Figure 4 As shown, the bottom 15 is formed with a plurality of (for example, four) flanges 35 for mounting the load side of the rotary motor 1 with a holding brake on a support frame (not shown). Figure 5 As shown, the bottom 15 is formed with a through hole 36, and the through hole 36 is provided as shown. Figure 2 The output shaft 11A of the rotor 11 is shown to pass through the rotor 11. The output shaft 11A of the rotor 11 is supported by a bearing (not shown), but illustration and description of the bearing will be omitted.

[0108] Reference Figures 9 to 12 , illustrating the stator subassembly 12 with the connector.

[0109] Figure 9The stator subassembly 12 with connectors is shown before resin sealing. Figure 12 The stator subassembly 12 with connectors is shown after resin sealing.

[0110] like Figure 9 As shown, the stator subassembly 12 with a connector includes a stator subassembly 50 (intermediate assembly) and a connector 51. The connector 51 is mounted on the stator subassembly 50 so as to face the stator subassembly 50 in the radial direction. In other words, the connector 51 is fixed to the stator subassembly 50 so as to face the stator subassembly 50 in the radial direction. The connector 51 is disposed on the outer circumference of the stator subassembly 50. The connector 51 is disposed radially outward of the stator subassembly 50.

[0111] The stator subassembly 50 includes a stator core 52 , an insulator 53 , a plurality of coils 54 , and a wiring substrate 55 .

[0112] The stator core 52 is a stack of electromagnetic steel sheets and includes an annular core body 56 and a plurality of teeth 57 protruding from the core body 56 toward the inside in the radial direction.

[0113] The insulator 53 is disposed so as to cover the plurality of teeth 57 .

[0114] The plurality of coils 54 are respectively disposed on the plurality of teeth 57 through the insulator 53 .

[0115] The wiring substrate 55 is a rigid wiring substrate, and is configured to face the stator core 52 in the axial direction. The plate thickness direction of the wiring substrate 55 is parallel to the axial direction. The wiring substrate 55 includes: a ring-shaped wiring substrate body 58 and a connector assembly portion 59, and the connector assembly portion 59 protrudes from the wiring substrate body 58 toward the outside of the radial direction. The wiring substrate body 58 is formed with a circuit pattern, and the coil windings of each coil 54 are electrically connected to this circuit pattern. Figure 9 and Figure 10 As shown, the connector assembly portion 59 includes an upper surface 59A and a lower surface 59B facing the axial direction. The upper surface 59A is the surface opposite to the lower surface 59B, and the upper surface 59A faces away from the stator core 52. The lower surface 59B faces toward the stator core 52. The upper surface 59A of the connector assembly portion 59 is formed with a plurality of electrode pads 60. The connector assembly portion 59 is formed with a plurality of positioning holes 61. In this embodiment, as an example, the connector assembly portion 59 is formed with six electrode pads 60 and two positioning holes 61.

[0116] like Figure 10 As shown, the connector 51 is fixed to the connector mounting portion 59 of the wiring substrate 55. Figure 11 As shown, the connector 51 includes a plurality of contacts 70 and a housing 71 made of insulating resin. The housing 71 holds and neatly arranges the plurality of contacts 70 .

[0117] Each contact 70 is formed in a flat plate shape. Each contact 70 includes a substrate connection portion 72, the substrate connection portion 72 being welded to each electrode pad 60, and the electrode pad 60 being arranged on a Figure 10 The upper surface 59A of the connector assembly portion 59 of the wiring substrate 55 shown; the contact portion 73, which contacts the contact piece of the external connector 5 (the contact piece on the connection object side); and the retaining portion 74, which is buried and retained in the shell 71.

[0118] Each substrate connection portion 72 is pin-shaped and extends in the axial direction.

[0119] Each contact portion 73 is formed in a flat plate shape. The contact portions 73 of the plurality of contact members 70 are arranged in a direction perpendicular to the axial direction. The plate thickness direction of the plurality of contact portions 73 is the same as the parallel direction of the plurality of contact portions 73.

[0120] In this embodiment, the connector 51 includes, by way of example, six contacts 70. Three of the contacts 70 are connected to the plurality of coils 54 of the rotary motor 2. Another contact 70 is connected to the neutral point of the rotary motor 2. The remaining two contacts 70 can be connected to, for example, the holding brake 3 or the encoder 4.

[0121] The housing 71 includes: an embedded portion 80 in which the retaining portion 74 of the plurality of contacts 70 is embedded; a receiving portion 81 for receiving the contact portion 73 of the plurality of contacts 70; and two positioning pins 82 (pins). The embedded portion 80 and the receiving portion 81 form an L-shape when viewed in the parallel direction of the plurality of contacts 70. The two positioning pins 82 protrude from the embedded portion 80 toward the axial direction. In addition, the housing 71 may have only one positioning pin 82 or more than three positioning pins 82. The positioning pins 82 may also be used to fix the connector 51 to the wiring substrate 55.

[0122] Then, if Figure 10As shown, the connector 51 is assembled to the lower surface 59B of the connector assembly portion 59 of the wiring substrate 55. Specifically, the positioning pins 82 of the shell 71 of the connector 51 are inserted into the positioning holes 61 of the connector assembly portion 59 of the wiring substrate 55, and the substrate connection portion 72 of each contact 70 of the connector 51 is welded to the electrode pads 60 of the connector assembly portion 59 of the wiring substrate 55. The shell 71 of the connector 51 is opposite to the lower surface 59B of the connector assembly portion 59 of the wiring substrate 55 in the axial direction. In addition, for the convenience of the diagram, Figure 10 The state before each substrate connection portion 72 is soldered to each electrode pad 60 is shown.

[0123] Then, if Figure 12 As shown, the stator subassembly 50 is sealed with resin. In this manner, the stator subassembly 12 with the connector is completed. Furthermore, the substrate connection portions 72 of each contact 70 of the connector 51 are also sealed with resin at the same time as the stator subassembly 50 is sealed with resin. Meanwhile, the contact portions 73 of each contact 70 of the connector 51 are not encapsulated with resin and are exposed.

[0124] Figure 3 The figure shows the situation when the stator subassembly 12 with the connector is about to be inserted into the frame 13 . Figure 13 The figure shows a state where the stator subassembly 12 with the connector is inserted into the frame 13 and the frame 13 accommodates the stator subassembly 12 with the connector.

[0125] like Figure 3 and Figure 13 As shown, the stator subassembly 12 with a connector is inserted into the frame 13. The connector 51 of the stator subassembly 12 with a connector is inserted into the groove 25 of the frame 13, moves along the groove 25 in the axial direction within the groove 25, and is accommodated in the groove 25 together with the connector fitting portion 59 of the connector 51. Before inserting the stator subassembly 12 with a connector into the frame 13, the frame 13 may be preheated to expand in the radial direction. This allows the stator subassembly 12 with a connector to be shrink-fitted into the frame 13. Alternatively, the stator subassembly 12 with a connector may be fitted into the frame 13 with clearance, and the gap may be filled with an adhesive or the like.

[0126] Figure 14 A top view of the stator 10 is shown after the stator subassembly 12 with connector is inserted into the frame 13 . Figure 14In the top view of FIG, when the stator subassembly 12 with the connector is inserted into the frame 13, the contact portions 73 of the contacts 70 constituting the connector 51 can be identified through the window portion 30. Figure 14 In the top view of FIG, the contact portion 73 of each contact member 70 is located inside the seamless inner peripheral surface 30A of the window portion 30. Figure 13 As shown, the connector 51 is located radially further inward than the sealing surface 19. The connector 51 accommodated in the groove 25 can be connected from the outside through the window 30. Therefore, the external connector 5 can overlap the connector 51 through the window 30.

[0127] However, as long as the connector 51 accommodated in the groove 25 can be connected from the outside through the window portion 30, the contact portions 73 of the respective contacts 70 constituting the connector 51 may not be recognizable through the window portion 30 when the stator subassembly 12 having the connector is inserted into the frame 13.

[0128] Next, a method for manufacturing the stator 10 of the rotary electric machine 2 will be described.

[0129] S1: Installation steps

[0130] First, if Figure 10 As shown, the connector 51 is mounted on the lower surface 59B of the connector mounting portion 59 of the wiring substrate 55 of the stator sub-assembly 50 .

[0131] S2: Sealing step

[0132] Then, if Figure 12 As shown, the stator subassembly 50 is sealed with resin. However, this sealing step may be omitted.

[0133] S3: Accommodation step

[0134] Then, if Figure 3 and Figure 13 As shown, the stator subassembly 12 with the connector is inserted into and accommodated in the frame 13 .

[0135] In this embodiment, the radial direction of the rotary motor 2 is the same as the radial direction of the frame 13 , and the axial direction of the rotary motor 2 is the same as the axial direction of the frame 13 .

[0136] The preferred embodiments of the present application have been described above, and the embodiments have the following features.

[0137] like Figures 1 to 14As shown, the rotary electric motor 2 includes a stator subassembly 12 (accommodating an object) with a connector and a cylindrical frame 13 (stator frame) that accommodates the stator subassembly 12 with the connector. The stator subassembly 12 with the connector includes a stator subassembly 50 (intermediate assembly) and a connector 51. The connector 51 is mounted on the stator subassembly 50 so as to face the stator subassembly 50 in the radial direction (the radial direction of the frame 13). The groove 25 is formed on the inner circumferential surface 17 of the frame 13. The groove 25 extends axially from the axial opening 16 of the frame 13 and accommodates the connector 51. The frame 13 is formed with a window 30 for engaging the external connector 5 (the mating connector) with the connector 51 accommodated in the groove 25. The window portion 30 opens toward the sealing surface 19 (outer surface) of the outer circumferential surface 18 of the frame 13 and the top surface 26 (inner surface) of the groove 25, and has a seamless inner circumferential surface 30A. This structure enables miniaturization of the rotary electric motor 2. This structure also enables the stator subassembly 50 to remain housed in the frame 13 even after the connector 51 is mounted on the stator subassembly 50 so that it faces the stator subassembly 50 in the radial direction of the cylindrical frame.

[0138] In other words, if the connector 51 is installed on the stator subassembly 50 after the stator subassembly 50 is inserted into the frame 13, automating the installation process would be difficult due to insufficient space for the installation work. On the other hand, in this embodiment, the connector 51 is installed on the stator subassembly 50 before the stator subassembly 50 is inserted into the frame 13, thereby automating the installation process.

[0139] The rotating electric motor 2 includes a stator subassembly 12 (an object to be accommodated) with a connector and a cylindrical frame 13 (a stator frame) that accommodates the stator subassembly 12 with a connector. The stator subassembly 12 with a connector includes a stator subassembly 50 (an intermediate assembly) and the connector 51. The stator subassembly 50 includes a stator core 52 and a wiring board 55 (a rigid wiring board). The wiring board 55 is arranged to face the stator core 52 in the axial direction. The wiring board 55 includes an annular wiring board body 58 and a connector mounting portion 59 that protrudes radially outward from the wiring board body 58. The connector 51 is fixed to the connector mounting portion 59 of the wiring board 55 so that it faces the stator core 52 in the radial direction of the frame 13. The connector 51 includes contacts 70 soldered to the connector mounting portion 59 and a housing 71 that holds the contacts 70. The inner circumferential surface 17 of the frame 13 is formed with the groove 25, which extends from the axial opening 16 of the frame 13 in the axial direction and accommodates the connector 51 and the connector mounting portion 59. The frame 13 is formed with the window 30, which is used to allow the external connector 5 (the mating connector) to overlap the connector 51 accommodated in the groove 25. The window 30 is open to the sealing surface 19 (outer surface) of the outer circumferential surface 18 of the frame 13 and the top surface 26 (inner surface) of the groove 25, and has the seamless inner circumferential surface 30A.

[0140] A first technical effect of the above structure is that, by arranging the connector 51 so as to face the stator core 52 in the radial direction, the rotating electric motor 2 can be miniaturized in the axial direction, compared to a case where the connector 51 is not arranged so as to face the stator core 52 in the radial direction. A second technical effect of the above structure is that, even if the inner circumferential surface 30A of the window portion 30 remains seamless to ensure sealing, the stator core 52 can still be accommodated in the frame 13 after the connector 51 is mounted on the wiring substrate 55 so as to face the stator core 52 in the radial direction. In particular, the second technical effect is that, because the connector 51 can be mounted on the wiring substrate 55 before the stator core 52 is accommodated in the frame 13, manufacturing becomes easier and manufacturing costs can be reduced. As described above, the above structure can simultaneously achieve the three effects of miniaturization, sealing, and reduced manufacturing costs.

[0141] Furthermore, if Figure 9As shown in FIG. 5 , the connector 51 is supported by the wiring substrate 55 . However, the connector 51 may be supported by the stator core 52 or the insulator 53 as an alternative.

[0142] Furthermore, if Figure 9 As shown, the connector 51 is soldered to the wiring substrate 55. However, as an alternative, the connector 51 may be mounted on the wiring substrate 55 by adhesive.

[0143] Furthermore, if Figure 11 As shown, the connector 51 includes: the plurality of contacts 70, and the housing 71 that holds and neatly arranges the plurality of contacts 70. Each contact 70 includes the contact portion 73, and the contact portion 73 contacts the counterpart contact of the external connector 5. Each contact portion 73 is formed into a flat plate. Compared to a case where each contact portion 73 has a pin shape, the above structure helps reduce the height of the connector 51 while ensuring that each contact portion 73 has a sufficient surface area. In other words, compared to a case where each contact portion 73 has a pin shape, the above structure helps reduce the height of the connector 51 while ensuring that each contact portion 73 has a sufficient contact area with the counterpart contact. Furthermore, by reducing the height of the connector 51, the radial dimension of the rotary motor 2 can be reduced.

[0144] Furthermore, if Figure 14 As shown, the sealing surface 19 of the outer peripheral surface 18 of the frame 13 encloses the window portion 30 in a seamless plane. In other words, the sealing surface 19 is an annular, seamless plane. This structure achieves a high level of sealing performance when the external connector 5 is mounted on the sealing surface 19 of the frame 13. The sealing surface 19 serves as the joint surface between the external connector 5 and the frame 13, thereby achieving high airtightness of the window portion 30.

[0145] Furthermore, if Figure 12 As shown, the stator subassembly 50 is sealed with resin. However, as an alternative, the stator subassembly 50 may not be sealed with resin.

[0146] The method for manufacturing the stator 10 of the rotary electric motor 2 sequentially includes the mounting step (S1) and the housing step (S3). In the mounting step (S1), the connector 51 is mounted on the stator subassembly 50. In the housing step (S3), the stator subassembly 50 is housed in the cylindrical frame 13. Then, in the housing step (S3), the connector 51 is moved along the groove 25. The above method achieves a manufacturing method in which the stator subassembly 50 is housed in the frame 13 after the connector 51 is mounted on the stator subassembly 50.

[0147] In addition, after the installation step (S1) and before the accommodation step (S3), the method further includes the sealing step (S2) of sealing the stator subassembly 50 with resin. This method can seal the stator subassembly 50 with resin using low-cost equipment.

[0148] The above embodiment can be modified as follows, for example.

[0149] In the above embodiment, Figure 9 As shown, the connector 51 and the stator core 52 are not facing each other in the radial direction. However, the entire connector 51 may face the stator core 52 in the radial direction, or at least a portion of the connector 51 may face the stator core 52 in the radial direction.

[0150] In the above embodiment, Figure 9 As shown, the entire connector 51 is located radially outward relative to the stator core 52. However, as an alternative, at least a portion of the connector 51 may be located radially outward relative to the stator core 52, with the remaining portion facing the stator core 52 in the axial direction.

[0151] Furthermore, the sealing surface 19 may be further provided with a sealing member or a sealing mechanism for sealing the joint surface when the mating connector is mounted on the sealing surface 19 .

[0152] Furthermore, if Figure 4As shown, the sealing surface 19 surrounding the window 30 is located radially outward relative to the outer peripheral surface 18 of the peripheral wall 14. That is, near the window 30, the peripheral wall 14 is formed to protrude radially outward. The peripheral wall 14 of the frame 13 includes a raised portion 14A that protrudes radially outward. The window 30 is provided on the raised portion 14A so as to radially penetrate the raised portion 14A. This structure allows the groove 25 to be positioned radially outward compared to a case where the peripheral wall 14 does not protrude radially outward near the window 30. Consequently, the connector 51 can also be positioned radially outward, thereby ensuring a large diameter for the stator subassembly 50. The sealing surface 19 surrounding the window 30 is provided on the raised portion 14A.

[0153] In addition, if Figure 1 and Figure 2 As shown, the connector 51 may also be configured close to the holding brake 3 or close to the output shaft 11A.

[0154] (Second embodiment)

[0155] Below, refer to Figure 15 Hereinafter, the second embodiment will be described, focusing on the differences between this embodiment and the first embodiment, and any duplicate descriptions will be omitted.

[0156] In the first embodiment, Figure 4 As shown, the sealing surface 19 surrounding the window 30 is located radially outward relative to the outer peripheral surface 18 of the peripheral wall 14. That is, the peripheral wall 14 is formed to protrude radially outward near the window 30. The peripheral wall 14 of the frame 13 includes a raised portion 14A that protrudes radially outward. The window 30 is provided on the raised portion 14A so as to penetrate the raised portion 14A in the radial direction.

[0157] On the other hand, in this embodiment, Figure 15 As shown, the sealing surface 19 surrounding the window 30 and the outer peripheral surface 18 of the peripheral wall 14 are located in the same plane. In other words, the sealing surface 19 surrounding the window 30 is flush with the outer peripheral surface 18 of the peripheral wall 14. The raised portion 14A is omitted. This structure can reduce the size of the frame 13 in the radial direction.

[0158] (Third embodiment)

[0159] Below, refer to Figure 16Hereinafter, the third embodiment will be described. The differences between this embodiment and the first embodiment will be mainly described, and repeated descriptions will be omitted.

[0160] Figure 16 A general electric device 90 is shown. The general electric device 90 includes a machine 91 (an object to be accommodated) and a cylindrical housing frame 94 that accommodates the machine 91 .

[0161] The mechanism 91 includes an intermediate assembly 92 and a connector 93 . The connector 93 is mounted on the intermediate assembly 92 so as to face the intermediate assembly 92 in the radial direction of the housing frame 94 .

[0162] A groove 95 is formed on an inner peripheral surface 94A of the housing frame 94 . The groove 95 extends in the axial direction from an axial opening 94B of the housing frame 94 and accommodates the connector 93 .

[0163] The receiving frame 94 is formed with a window 96 for overlapping the mating connector with the connector 93 received in the groove 95 .

[0164] The window portion 96 is open toward the outer surface of the housing frame 94 and the inner surface of the groove portion 95 , and has a seamless inner peripheral surface 96A.

[0165] The intermediate component 92 may include, for example, a mechanical component, a printed circuit board, or a movable component. Electronic components may be mounted on the printed circuit board.

[0166] The above structure can achieve a technology for miniaturizing the general electrical device 90. Furthermore, the above structure can achieve a technology for storing the intermediate assembly 92 in the housing frame 94 even after the connector 93 is mounted on the intermediate assembly 92 so as to face the intermediate assembly 92 in the radial direction of the cylindrical housing frame 94.

[0167] Although the first to third embodiments have been described above, the embodiments can be combined and implemented as appropriate without departing from the technical concept of the present invention.

[0168] This application claims priority based on Japanese Patent Application No. 2019-235738, filed on December 26, 2019, the disclosure of which is incorporated herein in its entirety.

Claims

1. A rotating electric motor, characterized in that: Include: accommodating objects; and The stator frame is cylindrical and accommodates the object; wherein, The accommodated objects include: intermediate components and connectors; The intermediate component includes: a stator core and a rigid wiring substrate; The rigid wiring substrate is arranged to face the stator core in the axial direction, and the rigid wiring substrate includes: an annular wiring substrate body and a connector mounting portion, the connector mounting portion protruding radially outward from the wiring substrate body; In the radial direction of the stator frame, the connector is fixed to the connector assembly portion of the rigid wiring board in a manner facing the stator core, the connector comprising: a contact and a housing, the contact being welded to the connector assembly portion, and the housing holding the contact; A groove is formed on the inner circumferential surface of the stator frame, the groove extending from an opening in the axial direction toward the axial direction and accommodating the connector and the connector assembly portion; The stator frame is formed with a window portion, the window portion being used to overlap the mating side connector with the connector accommodated in the groove portion; The window portion opens toward the outer surface of the stator frame and the inner surface of the groove portion, and has a seamless inner peripheral surface.

2. The rotating electric motor according to claim 1, wherein The contact of the connector includes a substrate connecting portion that is soldered to the connector mounting portion of the rigid wiring substrate; The intermediate component and the substrate connecting portion of the contact of the connector are both sealed with resin.

3. The rotating electric motor according to claim 1 or 2, wherein: The outer surface of the stator frame is formed with a planar sealing surface; The inner surface of the groove portion includes a top surface parallel to the sealing surface.

4. The rotating electric motor according to claim 1 or 2, wherein: The stator frame includes a raised portion, and the raised portion is raised toward the outer side in the radial direction; The window portion is formed in the raised portion.

5. The rotating electric motor according to claim 1 or 2, wherein: The contact piece is in the shape of a flat plate.

6. The rotating electric motor according to claim 1 or 2, wherein: The housing is provided with a pin for positioning or fixing.

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