Stator assembly and motor device

Abstract

The utility model discloses a stator assembly and a motor device, and belongs to the technical field of motor equipment. A winding wiring terminal, a lead positioning seat, a limiting boss, a lead and a rotator accommodating cavity are arranged at the end part of the stator assembly, the winding wiring terminal and the lead positioning seat are arranged around the rotator accommodating cavity, the distance between the limiting boss and the rotator accommodating cavity is smaller than that between the winding wiring terminal and the rotator accommodating cavity, and the lead is connected with the winding wiring terminal. The lead wire is led out from the lead wire positioning seat after bypassing one side, deviating from the rotator accommodating cavity, of the limiting boss, and the rotator accommodating cavity is used for being in running fit with a rotor assembly. According to the stator assembly provided by the utility model, the lead is limited through the limiting boss in the stator assembly, so that interference between the lead and the rotor assembly is avoided, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a stator component and a motor device comprising the stator component. Background Art

[0002] The three-phase wires of the motor stator need to be led out through the power cord and connected to the external drive electronic control board. In the related technology, the lead wires are limited or have no limit structure through heat shrink tubing. This method is either difficult to operate and has high cost, or it is easy to cause the motor lead wires to touch the rotating body, causing abnormal noise and safety hazards. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] Therefore, one purpose of the utility model is to provide a stator assembly that can limit the lead wires to avoid interference between the lead wires and the rotor assembly, thereby improving safety.

[0005] Another object of the present invention is to provide a motor device, the motor device comprising the aforementioned stator assembly,

[0006] According to the stator assembly of the embodiment of the utility model, the end of the stator assembly is provided with a winding terminal, a lead positioning seat, a limiting boss, a lead and a rotating body accommodating cavity, the winding terminal and the lead positioning seat are arranged around the rotating body accommodating cavity, the distance between the limiting boss and the rotating body accommodating cavity is smaller than the distance between the winding terminal and the rotating body accommodating cavity, the lead is connected to the winding terminal, and bypasses the side of the limiting boss away from the rotating body accommodating cavity and then leads out from the lead positioning seat, and the rotating body accommodating cavity is used to rotate with the rotor assembly.

[0007] According to the stator assembly of the embodiment of the utility model, the lead wire is limited by the limiting boss in the stator assembly, so as to avoid interference between the lead wire and the rotor assembly and improve safety.

[0008] In addition, the stator assembly according to the above embodiment of the utility model may also have the following additional technical features:

[0009] Optionally, the limiting boss is arranged in a first sector-shaped area constructed by a line connecting the winding terminal and the axis of the rotating body accommodating cavity and a line connecting the lead positioning seat and the axis.

[0010] Optionally, the winding terminal includes at least two, and the at least two winding terminals are arranged around the axis. The at least two winding terminals include a first terminal closest to the lead positioning seat and a third terminal farthest from the lead positioning seat. A first sector region is formed between the connection line of the third terminal and the axis and the connection line of the lead positioning seat and the axis.

[0011] Optionally, the limiting boss is closer to the first terminal than the third terminal.

[0012] Optionally, the connection line of the first terminal and the axis is a first connection line, the connection line of the limiting boss and the axis is a second connection line, and the angle α between the first connection line and the second connection line is not greater than 30°.

[0013] Optionally, the limiting boss is arranged on a side of the connection line of the first terminal and the axis close to the lead positioning seat.

[0014] Optionally, the limiting boss and the winding terminal have a first distance L in the radial direction of the stator assembly, and the first distance L is greater than or equal to φ, where φ is the outer diameter of the lead.

[0015] Optionally, the first distance L is greater than or equal to N*φ, where N is the number of leads; and / or, the first distance L is not greater than 7*N*φ.

[0016] Optionally, the distance between the winding terminal and the axis of the rotating body accommodating cavity is L1, the distance between the limiting boss and the axis is L2, and the radial dimension of the rotating body accommodating cavity is R1, where L2 > R1; or, L1 - L2 ≥ φ, where φ is the outer diameter of the lead.

[0017] Optionally, the limiting boss is configured as a circular boss; or, the limiting boss includes a plurality arranged around the rotating body accommodating cavity; or, the limiting boss is configured as an arc-shaped boss extending along the direction around the rotating body accommodating cavity.

[0018] Optionally, the stator assembly includes a stator body and an end cover. The winding terminal, the lead positioning seat, and the limiting boss are arranged at one end of the stator body in the axial direction. The end cover covers the one end of the stator body. The second distance H between the limiting boss and the end cover in the axial direction is not less than 0 and not greater than φ, where φ is the outer diameter of the lead.

[0019] According to the motor device of the embodiment of the present invention, the motor device includes the stator assembly and the rotor assembly as described above, and the rotor assembly is rotatably matched with the stator assembly.

[0020] According to the motor device of the embodiment of the present utility model, by applying the aforementioned stator assembly, interference between the lead wires in the stator assembly and the rotor assembly can be avoided, thereby improving the working stability of the motor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a stator assembly in some embodiments of the present utility model.

[0022] Figure 2 is a top view of the stator assembly in some embodiments of the present utility model (showing the first sector area).

[0023] Figure 3 is a top view of the stator assembly in some embodiments of the present utility model (showing the angle α).

[0024] Figure 4 is a top view of the stator assembly in some embodiments of the present utility model (showing the first distance L).

[0025] Figure 5 is a schematic diagram of the stator assembly in some embodiments of the present utility model (showing the second distance H).

[0026] REFERENCE SIGNS:

[0027] Stator assembly 100, winding terminal 10, first terminal 11, second terminal 12, third terminal 13, lead wire positioning seat 20, limiting boss 30, lead wire 40, first lead wire 41, second lead wire 42, third lead wire 43, rotating body accommodation cavity 50, stator main body 60, end cover 70, first sector area 80, circumferential direction A - A of the stator assembly, axial direction B - B of the stator assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0029] Referring to Figures 1 to 5 , the present utility model provides a stator assembly 100 and a motor device, which can limit the lead wire 40 to avoid interference between the lead wire 40 and the rotor assembly and improve safety. Among them, the circumferential direction of the stator assembly 100 is the direction along the axis of the rotating body accommodation cavity 50; the axial direction of the stator assembly 100 is the direction along the axis of the rotating body accommodation cavity 50.

[0030] According to the stator assembly 100 of the embodiment of the present utility model, the end of the stator assembly 100 is provided with a winding terminal 10, a lead positioning seat 20, a limiting boss 30, a lead 40 and a rotating body accommodating cavity 50.

[0031] Among them, the winding terminal 10 and the lead positioning seat 20 are arranged around the rotating body accommodating cavity 50. The distance between the limiting boss 30 and the rotating body accommodating cavity 50 is less than the distance between the winding terminal 10 and the rotating body accommodating cavity 50. The lead 40 is connected to the winding terminal 10, bypasses the side of the limiting boss 30 facing away from the rotating body accommodating cavity 50, and then leads out from the lead positioning seat 20. The rotating body accommodating cavity 50 is used for rotational cooperation with the rotor assembly; with such a setting, interference between the lead 40 and the rotor assembly can be avoided, and the safety of the motor device can be improved.

[0032] Specifically, the end of the stator assembly 100 is provided with a winding terminal 10. The winding terminal 10 can be connected to the winding of the stator core. The lead 40 can be connected to the winding terminal 10 and lead out from the stator assembly 100 through the lead positioning seat 20. The stator assembly 100 is rotationally cooperated with the rotor assembly through the rotating body accommodating cavity 50; when the motor device is working, the part of the lead 40 between the winding terminal 10 and the lead positioning seat 20 is likely to interfere with the rotor assembly, resulting in wear of the lead 40; therefore, a limiting boss 30 can be provided at the end of the stator assembly 100, and the distance between the limiting boss 30 and the rotating body accommodating cavity 50 is less than the distance between the winding terminal 10 and the rotating body accommodating cavity 50. In this way, the winding terminal 10 and the rotating body accommodating cavity 50 can be separated on the opposite sides of the limiting boss 30 in the direction from the center to the periphery of the stator assembly 100. When the stator assembly 100 is assembled, the lead 40 can be arranged on the side of the limiting boss 30 facing away from the rotating body accommodating cavity 50, thereby avoiding interference between the lead 40 and the rotor assembly.

[0033] Therefore, for the stator assembly 100 of the embodiment of the present utility model, the lead 40 is limited by the limiting boss 30 in the stator assembly 100, so as to avoid interference between the lead 40 and the rotor assembly and improve safety.

[0034] Refer to Figures 1 to 5, in some embodiments of the present utility model, the limiting boss 30 is arranged in the first sector area 80 formed by the connection line between the winding terminal 10 and the axis of the rotating body accommodating cavity 50 and the connection line between the lead positioning seat 20 and the axis of the rotating body accommodating cavity 50; it can be understood that the limiting boss 30 is arranged in the first sector area 80 between the winding terminal 10 and the rotating body accommodating cavity 50. In this way, in the direction from the rotating body accommodating cavity 50 to the winding terminal 10, the limiting boss 30 can separate the winding terminal 10 and the rotating body accommodating cavity 50 on its opposite sides; when arranging the lead 40 on the stator assembly 100, the limiting boss 30 can restrict the lead 40 connected to the winding terminal 10 to avoid interference between the lead 40 and the rotor assembly in the rotating body accommodating cavity 50.

[0035] Referring to Figures 1 to 4 , in some embodiments of the present utility model, there are at least two winding terminals 10, and the at least two winding terminals 10 are arranged around the axis of the rotating body accommodating cavity 50. The at least two winding terminals 10 include a first terminal 11, a second terminal 12, and a third terminal 13. The first terminal 11 is the closest to the lead positioning seat 20 among the three terminals, and the third terminal 13 is the farthest from the lead positioning seat 20 among the three terminals. A first sector area 80 is formed between the connection line of the third terminal 13 and the axis and the connection line of the lead positioning seat 20 and the axis; in this way, the limiting effect of the limiting boss 30 on the lead 40 can be further improved, and interference between the lead 40 and the rotor assembly can be avoided.

[0036] Specifically, the lead positioning seat 20, the first terminal 11, the second terminal 12, and the third terminal 13 are arranged along the direction around the axis. The first terminal 11 is closer to the lead positioning seat 20 than the third terminal 13. The lead 40 includes a first lead 41 arranged between the first terminal 11 and the lead positioning seat 20, a second lead 42 arranged between the second terminal 12 and the lead positioning seat 20, and a third lead 43 arranged between the third terminal 13 and the lead positioning seat 20; it can be understood that the limiting boss 30 is arranged in the first sector area 80 to correspond to the at least two winding terminals 10, so as to separate the winding terminal 10 from the rotating body accommodating cavity 50. In this way, the lead 40 connected to the winding terminal 10 can be restricted by the limiting boss 30 to avoid interference between the lead 40 and the rotating body accommodating cavity 50.

[0037] More specifically, in some examples, the limiting boss 30 can be arranged on the connection line between the first terminal 11 and the axis to avoid interference between the lead 40 and the rotor assembly in the rotating body accommodating cavity 50; in other examples, the limiting boss 30 can be arranged on the connection line between the third terminal 13 and the axis to avoid interference between the lead 40 and the rotor assembly in the rotating body accommodating cavity 50.

[0038] Furthermore, the limiting boss 30 is closer to the first terminal 11 than the third terminal 13; specifically, the third terminal 13 is farther from the lead positioning seat 20 than the other two terminals, so the third lead 43 is longer than the first lead 41 and the second lead 42. When the motor device is working, the part of the third lead 43 away from the third terminal 13 is likely to interfere with the rotor assembly in the rotating body accommodating cavity 50. Therefore, the limiting boss 30 can be arranged at a position closer to the first terminal 11 relative to the third terminal 13 to limit the third lead 43 and prevent the third lead 43 from interfering with the rotor assembly; and while the third lead 43 is limited by the limiting boss 30, the first lead 41 and the second lead 42, which are shorter than the third lead 43, can also be limited by the limiting boss 30.

[0039] Refer to Figure 1 and Figure 3 , in some embodiments of the present utility model, the connection line between the first terminal 11 and the axis is the first connection line, and the connection line between the limiting boss 30 and the axis is the second connection line. The angle α between the first connection line and the second connection line is not greater than 30°; such a setting can better limit the lead 40 and prevent the lead 40 from interfering with the rotor assembly.

[0040] Specifically, in combination with the foregoing, the lead positioning seat 20, the first terminal 11, the second terminal 12, and the third terminal 13 are arranged along the direction around the axis. The third lead 43 is longer than the first lead 41 and the second lead 42. Therefore, the part of the third lead 43 away from the lead positioning seat 20 and away from the third terminal 13 is likely to interfere with the rotor assembly in the rotating body accommodating cavity 50; more specifically, the third lead 43 can include a first line segment, a second line segment, and a third line segment. The first line segment, the second line segment, and the third line segment are connected in sequence. The first line segment is arranged on the lead positioning seat 20, and the third line segment is arranged on the third terminal 13. Since the second line segment is away from the lead positioning seat 20 and the third terminal 13, it is likely to interfere with the rotor assembly as the motor device works. Therefore, the angle α between the first connection line and the second connection line can be made not greater than 30°, so as to limit the second line segment of the third lead 43 and prevent the third lead 43 from interfering with the rotor assembly; it can be understood that when the second connection line is on the side of the first connection line close to the lead positioning seat 20, if the angle α is greater than 30°, the limiting boss 30 limits the first line segment of the third lead 43, which is likely to cause the second line segment of the third lead 43 to interfere with the rotor assembly; when the second connection line is on the side of the first connection line facing away from the lead positioning seat 20, if the angle α is greater than 30°, the limiting boss 30 limits the third line segment of the third lead 43, which is likely to cause the second line segment of the third lead 43 to interfere with the rotor assembly. Among them, the angle α can be 0°, 5°, 15°, 25°, 30°, etc.

[0041] Reference Figure 1 and Figure 3 In some embodiments of the present utility model, the limiting boss 30 is provided on the side close to the lead positioning seat 20 of the connection line between the first wiring terminal 11 and the axis of the rotating body accommodating cavity 50; so as to improve the limiting effect of the limiting boss 30 on the lead 40, thereby improving the working stability of the motor device.

[0042] Specifically, when arranging the lead 40, at least a part of the first lead 41, the second lead 42 and the third lead 43 is arranged on the side close to the lead positioning seat 20 of the connection line between the first wiring terminal 11 and the axis, so as to be led out through the lead positioning seat 20; therefore, in order to enable the limiting boss 30 to play a constraining role on the first lead 41, the second lead 42 and the third lead 43, the limiting boss 30 can be arranged on the side close to the lead positioning seat 20 of the connection line between the first wiring terminal 11 and the axis, so as to play a limiting role on the first lead 41, the second lead 42 and the third lead 43, thereby avoiding interference between the lead 40 and the rotor assembly.

[0043] Furthermore, referring to Figure 1 and Figure 4 In some embodiments of the present utility model, the limiting boss 30 and the winding connection terminal 10 have a first distance L in the radial direction of the stator assembly 100, and the first distance L is greater than or equal to φ, where φ is the outer diameter of the lead 40; such a setting can provide a routing space for the lead 40 and facilitate the arrangement of the lead 40.

[0044] Specifically, in the radial direction of the stator assembly 100, one side of the limiting boss 30 faces the rotating body accommodating cavity 50, the other side of the limiting boss 30 faces the winding connection terminal 10, and there is a first distance L between the limiting boss 30 and the winding connection terminal 10. The first distance L can provide a clearance space for the lead 40 between the winding connection terminal 10 and the lead positioning seat 20, facilitating the arrangement of the lead 40, where the first distance L is greater than or equal to φ, and φ is the outer diameter of the lead 40.

[0045] More specifically, the first distance L is greater than or equal to N*φ, where N is the number of leads; where the lead 40 includes the first lead 41, the second lead 42 and the third lead 43, and the outer diameters of the first lead 41, the second lead 42 and the third lead 43 are all φ. Therefore, the first distance L can be greater than 3*φ to provide a clearance space for the three leads 40, facilitating the three leads 40 to bypass from the side of the limiting boss 30 facing away from the rotating body accommodating cavity 50; of course, if the outer diameters of the first lead 41, the second lead 42 and the third lead 43 are different, the average value of the outer diameters of the first lead 41, the second lead 42 and the third lead 43 can be taken for calculation.

[0046] Furthermore, referring to Figure 1And Figure 4 In some embodiments of the present utility model, the first distance L is not greater than 7 * N * φ. With this setting, it can be avoided that the limiting boss 30 is far away from the winding terminal 10, which affects the limiting effect of the limiting boss 30 on the lead wire 40.

[0047] Among them, the first distance L can be 1 * N * φ, 1.1 * N * φ, 2 * N * φ, 5 * N * φ, 5.5 * N * φ, 7 * N * φ.

[0048] Refer to Figure 4 In some embodiments of the present utility model, the distance between the winding terminal 10 and the axis of the rotating body accommodating cavity 50 is L1, the distance between the limiting boss 30 and the axis of the rotating body accommodating cavity 50 is L2, and the radial dimension of the rotating body accommodating cavity 50 is R1. Among them, L2 > R1; it can be understood that the distance between the limiting boss 30 and the axis should be greater than the radial dimension of the rotating body accommodating cavity 50 to avoid interference between the lead wire 40 bypassing from the side of the limiting boss 30 away from the rotating body accommodating cavity and the rotor assembly in the rotating body accommodating cavity 50.

[0049] In addition, L1 - L2 ≥ φ, where φ is the outer diameter of the lead wire 40; with this setting, it can provide a routing space for the lead wire 40 and facilitate the arrangement of the lead wire 40.

[0050] Refer to Figures 1 to 5 In some embodiments of the present utility model, the limiting boss 30 is configured as a circular boss. The outer peripheral surface of the circular boss is smoother than the outer peripheral edge of the polygonal boss. When the lead wire 40 bypasses from the side of the circular boss away from the rotating body accommodating cavity 50, the wear on the lead wire 40 can be reduced, thereby improving the service life of the motor device.

[0051] In some other embodiments of the present utility model, there are multiple limiting bosses 30, and the multiple limiting bosses 30 are arranged around the axis to avoid interference between the lead wire 40 and the rotor assembly and improve the safety of the motor device.

[0052] In still some other embodiments of the present utility model, the limiting boss 30 is configured as an arc-shaped boss extending along the direction around the axis to avoid interference between the lead wire 40 and the rotor assembly and improve the safety of the motor device.

[0053] Refer to Figures 1 to 5, in some embodiments of the present utility model, the stator assembly 100 includes a stator body 60 and an end cover 70. The winding terminal 10, the lead positioning seat 20, the limiting boss 30, and the lead 40 are arranged at one end of the stator body 60 along the axial direction. The end cover 70 covers one end of the stator body 60. The second distance H between the limiting boss 30 and the end cover 70 in the axial direction is not less than 0 and not greater than φ, where φ is the outer diameter of the lead 40. Thus, interference between the lead 40 and the rotor assembly can be avoided, and safety can be improved.

[0054] Specifically, the rotating body accommodating cavity 50 of the stator body 60 is rotationally matched with the rotor assembly. During assembly, the lead 40 can be arranged on the end face of the stator body 60, connected to the winding connection strip terminal, and led out from the lead positioning seat 20 after bypassing the side of the limiting boss 30 facing away from the rotating body accommodating cavity 50, and then the end cover 70 is sealed on the stator body 60. Among them, the second distance H between the limiting boss 30 and the end cover 70 in the axial direction is not less than 0 and not greater than φ. More specifically, if the second distance is less than 0, due to processing and assembly errors, the end cover 70 will be interfered by the limiting boss 30 and cannot be well assembled on the end face of the stator body 60. If the second distance is greater than φ (i.e., the outer diameter of the lead 40), the lead 40 may cross over the limiting boss 30 from the gap between the limiting boss 30 and the end cover 70, thus interfering with the rotor assembly and affecting the safety of the motor device. Therefore, the second distance H needs to be not less than 0 and not greater than φ.

[0055] Combined with the foregoing embodiments, the lead 40 includes a first lead 41, a second lead 42, and a third lead 43. If the outer diameters of the first lead 41, the second lead 42, and the third lead 43 are different, the smallest lead outer diameter is taken.

[0056] Refer to Figures 1 to 5 , according to the motor device of the embodiment of the present utility model, the motor device includes the stator assembly 100 and the rotor assembly in the above embodiments. The rotor assembly is rotatably matched with the stator assembly 100. By applying the foregoing stator assembly 100, interference between the lead 40 in the stator assembly 100 and the rotor assembly can be avoided, thereby improving the working stability of the motor device.

[0057] Specifically, the end face of the stator body 60 is provided with a winding terminal 10, a lead positioning seat 20, a limiting boss 30, a lead 40, and a rotating body accommodating cavity 50. The rotating body accommodating cavity 50 can be rotationally matched with the rotating shaft of the rotor assembly. The lead 40 can be connected to the winding terminal 10 and led out from the lead positioning seat 20, but the lead 40 is likely to interfere with the rotating shaft in the rotating body accommodating cavity 50. Therefore, the lead 40 can be bypassed from the side of the limiting boss 30 facing away from the rotating body accommodating cavity 50, and the lead 40 is limited by the limiting boss 30.

[0058] More specifically, the winding terminal 10 includes a first terminal 11, a second terminal 12, and a third terminal 13. The lead wire 40 includes a first lead wire 41 disposed between the first terminal 11 and the lead wire positioning seat 20, a second lead wire 42 disposed between the second terminal 12 and the lead wire positioning seat 20, and a third lead wire 43 disposed between the third terminal 13 and the lead wire positioning seat 20. The lead wire positioning seat 20, the first terminal 11, the second terminal 12, and the third terminal 13 are arranged in a direction around the axis. The third terminal 13 is the farthest from the lead wire positioning seat 20, and the third lead wire 43 is the longest. The portion of the third lead wire 43 away from the third terminal 13 is prone to interference with the rotating shaft. Therefore, the limiting boss 30 can be made closer to the first terminal 11 relative to the third terminal 13, so as to better limit the third lead wire 43. And since the third lead wire 43 is the longest, while satisfying the limitation of the third lead wire 43, the limitations of the first lead wire 41 and the second lead wire 42 can be satisfied at the same time.

[0059] Furthermore, for the middle portion of the third lead wire 43 away from the third terminal 13 and the lead wire positioning seat 20, due to the lack of structural limitation, the middle portion of the third lead wire 43 is prone to interference with the rotating shaft. Therefore, an angle α not greater than 30° can be provided between the first connection line and the second connection line. The first connection line is the connection line between the first terminal 11 and the axis, and the second connection line is the connection line between the limiting boss 30 and the axis; so that the limiting boss 30 corresponds to the middle portion of the third lead wire 43, thereby improving the limiting effect on the third lead wire 43. Similarly, the middle portions of the first lead wire 41 and the second lead wire 42 can also be limited by the limiting boss 30.

[0060] In addition, in the direction of the connection line between the winding terminal 10 and the axis, the limiting boss 30 and the winding terminal 10 have a first distance L. The first distance L is greater than N*φ and not greater than 7*N*φ, so as to form a clearance space between the limiting boss 30 and the winding terminal 10, facilitating the arrangement of the lead wire 40 in the clearance space and preventing the limiting boss 30 from being too close to the rotating body accommodation cavity 50, which may affect the limiting effect of the limiting boss 30.

[0061] Furthermore, the limiting boss 30 is configured as a circular boss. Compared with a polygonal boss, the smoothness of the outer peripheral surface of the circular boss is higher, which can reduce the wear of the lead wire 40.

[0062] In addition, the end cover 70 covers the end face of the stator main body 60. In the axial direction, the second distance H between the limiting boss 30 and the end cover 70 is not less than 0 and not greater than φ. In this way, it is convenient for the installation and cooperation of the end cover 70 and the stator main body 60, and it is prevented that the lead wire 40 passes through the gap between the limiting boss 30 and the end cover 70 and crosses the limiting boss 30, thereby interfering with the rotating shaft.

[0063] In some specific examples of the present utility model, the stator assembly 100 of the motor device includes a stator body 60, a lead wire 40, and a limiting boss 30.

[0064] Among them, the limiting boss 30 is integrally molded with the stator body 60, and the material of the limiting boss and the stator molding material can be the same.

[0065] Specifically, the lead wire 40 is connected to the three-phase pins (i.e., the winding connection terminals 10) to lead out the three-phase wires of the motor device for connection with an external electronic control board to realize the driving operation of the motor device. The limiting boss 30 isolates the lead wire 40 from the rotating body (i.e., the rotor assembly), preventing the lead wire 40 from moving due to vibrations during the operation / transportation of the motor device and touching the internal rotating body, which may cause frictional abnormal sounds or long-term friction to damage the power cord, resulting in electrical safety problems caused by power cord damage.

[0066] More specifically, the optimal distance between the limiting boss 30 and the three-phase pins (i.e., the winding connection terminals 10) is: 1.1*(N*φ) ≤ L ≤ 7*(N*φ), where N represents the number of lead wires 40 between the limiting boss 30 and the three-phase connection pins, and φ represents the outer diameter of the lead wire 40. This ensures that the lead wire 40 can be smoothly placed between the limiting boss 30 and the expected three-phase pins, without causing inconvenience in operation due to too tight a fit.

[0067] In addition, the three-phase pins and the lead wire 40 grooves are named in order of increasing distance as the first pin (i.e., the first connection terminal 11), the second pin (i.e., the second connection terminal 12), and the third pin (i.e., the third connection terminal 13). The limiting boss 30 is preferably set at an angle of ±30° on both sides with the straight line connecting the midpoint of the first pin and the center of the stator as the reference and the center of the stator as the origin.

[0068] In addition, the optimal axial distance between the limiting boss 30 and the top end cover 70 is: 0 ≤ H < φ, where φ represents the outer diameter of the lead wire 40. This prevents the lead wire 40 from crossing the limiting boss 30 when subjected to axial vibration and touching the rotating body, which may cause frictional abnormal sounds or electrical safety problems.

[0069] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0070] In the present utility model, unless otherwise clearly specified or limited, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0071] In the present utility model, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0072] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A stator assembly, characterized in that: The end of the stator assembly is provided with a winding terminal (10), a lead positioning seat (20), a limiting boss (30), a lead (40) and a rotating body accommodating cavity (50); the winding terminal (10) and the lead positioning seat (20) are arranged around the rotating body accommodating cavity (50); the distance between the limiting boss (30) and the rotating body accommodating cavity (50) is smaller than the distance between the winding terminal (10) and the rotating body accommodating cavity (50); the lead (40) is connected to the winding terminal (10) and leads out from the lead positioning seat (20) after bypassing a side of the limiting boss (30) away from the rotating body accommodating cavity (50); the rotating body accommodating cavity (50) is used for rotationally cooperating with the rotor assembly.

2. The stator assembly according to claim 1, characterized in that: The limiting boss (30) is arranged in a first sector-shaped area (80) formed by a line connecting the winding connection terminal (10) and the axis of the rotating body accommodating cavity (50) and a line connecting the lead wire positioning seat (20) and the axis.

3. The stator assembly according to claim 2, characterized in that: The winding connection terminals (10) include at least two winding connection terminals (10), the at least two winding connection terminals (10) are arranged around the axis, the at least two winding connection terminals (10) include a first connection terminal (11) closest to the lead positioning seat (20) and a third connection terminal (13) farthest from the lead positioning seat (20), The first fan-shaped area (80) is constructed between the line connecting the third connecting terminal (13) and the axis and the line connecting the lead positioning seat (20) and the axis.

4. The stator assembly according to claim 3, characterized in that: The limiting boss (30) is closer to the first connecting terminal (11) than the third connecting terminal (13).

5. The stator assembly according to claim 3, characterized in that: The line connecting the first connecting terminal (11) and the axis is a first line, the line connecting the limiting boss (30) and the axis is a second line, and the angle α between the first line and the second line is not greater than 30°.

6. The stator assembly according to claim 3, characterized in that: The limiting boss (30) is arranged on a side of a line connecting the first connecting terminal (11) and the axis close to the lead positioning seat (20).

7. The stator assembly according to any one of claims 1 to 6, characterized in that: The limiting boss (30) and the winding terminal (10) have a first distance L in the radial direction of the stator assembly, and the first distance L is greater than or equal to φ, where φ is the outer diameter of the lead wire (40).

8. The stator assembly according to claim 7, characterized in that The first distance L is greater than or equal to N*φ, wherein N is the number of the leads (40); and / or the first distance L is less than or equal to 7*N*φ.

9. The stator assembly according to any one of claims 1 to 6, characterized in that: The distance between the winding terminal (10) and the axis of the rotating body accommodating cavity (50) is L1, the distance between the limiting boss (30) and the axis is L2, and the radial dimension of the rotating body accommodating cavity (50) is R1, wherein L2>R1; or, L1-L2≥φ, wherein φ is the outer diameter of the lead wire (40).

10. The stator assembly according to any one of claims 1 to 6, characterized in that: The limiting boss (30) is configured as a circular boss; or, the limiting boss (30) includes a plurality of bosses arranged around the rotating body accommodating cavity (50); or, the limiting boss (30) is configured as an arc-shaped boss extending in a direction around the rotating body accommodating cavity (50).

11. The stator assembly according to any one of claims 1 to 6, characterized in that: The stator assembly comprises a stator body (60) and an end cover (70); the winding connection terminal (10), the lead wire positioning seat (20) and the limiting boss (30) are arranged at one end of the stator body (60) in the axial direction; the end cover (70) is arranged on the one end of the stator body (60); a second distance H between the limiting boss (30) and the end cover (70) in the axial direction is not less than 0 and not greater than φ, wherein φ is the outer diameter of the lead wire (40).

12. A motor device, characterized in that: include: A stator assembly according to any one of claims 1 to 11; A rotor assembly is rotatably matched with the stator assembly.

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