Motor assembly and motor

Abstract

The invention provides a motor assembly and a motor. The motor assembly comprises a front end cover, a stator core, a plastic package part and a rear end cover, wherein the front end cover and the stator core are arranged in the plastic package part; the conductive parts comprise a first conductive part and a second conductive part; the first conductive part is in circuit connection with the front end cover and the stator core and is arranged in the plastic package part; and the second conductive part is in circuit connection with the stator core and the rear end cover. The conductive part is arranged in the plastic package part, the front end cover is in circuit connection with the rear end cover through the stator iron core, electric corrosion caused by shaft voltage is effectively prevented, the conductive part is arranged in the plastic package part, the conductive part does not make contact with the external complex environment, the risk of aging and falling off does not exist, and reliability and stability can be greatly improved.

Description

Technical Field

[0001] The present application belongs to the field of motor technology, and specifically relates to a motor component and a motor. Background Art

[0002] In existing plastic-sealed motors, the stator core is insulated from the front and rear end covers after the stator is plastic-sealed. The shaft voltage is too high due to high-frequency current and winding imbalance, which causes the bearing raceway oil film to be broken down by the shaft voltage, and the inner and outer wheels and balls to produce electrical corrosion, which seriously affects the service life of the motor. Therefore, plastic-sealed motors must be equipped with an anti-electrocorrosion structure.

[0003] There are many common plastic-encapsulated motor anti-corrosion structures, but it is difficult to strike a balance between cost and reliability. For example, bearings with insulating structures are very reliable but costly, anti-static tapes are low cost but prone to aging and loosening, and cannot meet the needs of high-power motors. External single-core copper wire screws fixed to the front and rear end covers have a simple structure but take a long time to operate, and the built-in copper tape, which is easy to operate, cannot ensure effective contact. Summary of the invention

[0004] Therefore, the present application provides a motor assembly and a motor, which can solve the problem of the bearing raceway oil film being broken down by the shaft voltage in the prior art.

[0005] In order to solve the above problems, the present application provides a motor assembly, comprising:

[0006] A front end cover, a stator core, a plastic package and a rear end cover, wherein the front end cover and the stator core are arranged in the plastic package;

[0007] The conductive member includes a first conductive member and a second conductive member; the first conductive member is circuit-connected to the front end cover and the stator core, and is disposed in the plastic package; the second conductive member is circuit-connected to the stator core and the rear end cover.

[0008] In some embodiments,

[0009] The plastic sealing member is provided with a through hole, the through hole is located on the axial side of the stator core close to the rear end cover, and one end of the second conductive member passes through the through hole and is connected to the stator core circuit.

[0010] In some embodiments,

[0011] Both axial ends of the stator core are provided with a frame located in the plastic package, and the first conductive member and the second conductive member are both passed through the frame and abut against the stator core.

[0012] In some embodiments,

[0013] The frame is provided with a mounting hole, and the mounting hole is arranged to penetrate the stator core axially and is used for assembling the conductive member and the circuit connection end of the stator core.

[0014] In some embodiments,

[0015] The mounting hole on the skeleton near the front end cover is set as a first mounting hole; the first conductive member includes a first socket and a first clamping head, the first socket is set in the first mounting hole, and its bottom surface abuts against the stator core; one end of the first clamping head is fixedly connected to the front end cover, and the other end is clamped with the first socket.

[0016] In some embodiments,

[0017] The first clamping seat is set as a slot-shaped structure, and the outer side surface of the slot bottom abuts against the stator core; the side wall of the first clamping seat is bent and extends toward the bottom of the slot to form a first clamping portion for clamping the first clamping head.

[0018] In some embodiments,

[0019] The first clamping portion is arranged in a wave shape along the extension direction; and / or, first fixing teeth are arranged on both sides of the first clamping portion, and limiting teeth are arranged at the bottom of the groove, and the extension direction of the limiting teeth intersects with the extension direction of the groove.

[0020] In some embodiments,

[0021] The first clamping head is set as an L-shaped sheet structure, one end of which is provided with a waist-shaped hole connected to the front end cover, and the other end is provided with a second clamping part clamped with the first clamping seat, and the second clamping part includes a hook bent to both sides and a second fixing tooth protruding to both ends.

[0022] In some embodiments,

[0023] The mounting hole on the frame near the rear end cover is set as a second mounting hole; the second conductive member includes a second socket and a second clamping head, the second socket is set in the second mounting hole, and its bottom surface abuts against the stator core; one end of the second clamping head abuts against the rear end cover, and the other end is clamped with the second socket.

[0024] In some embodiments,

[0025] The second clamping seat is set as a slot-shaped structure, and the outer side surface of the slot bottom abuts against the stator core; the side wall of the second clamping seat is bent and extends toward the bottom of the slot to form a third clamping portion for clamping the second clamping head.

[0026] In some embodiments,

[0027] The third clamping portion is arranged in a wave shape along the extension direction; and / or, third fixing teeth are arranged on both sides of the third clamping portion.

[0028] In some embodiments,

[0029] The second clamping head is set as a sheet structure, one end of which is attached to the outer wall surface of the plastic packaging part and abuts against the rear end cover, and the other end is provided with a fourth clamping part clamped with the second clamping seat, and the fourth clamping part includes a hook bent to both sides and a fourth fixing tooth protruding to both ends.

[0030] According to another aspect of the present application, a motor is provided, comprising the motor assembly as described above.

[0031] A motor assembly provided in the present application includes: a front end cover, a stator core, a plastic package and a rear end cover, wherein the front end cover and the stator core are arranged in the plastic package; a conductive member, including a first conductive member and a second conductive member; the first conductive member circuit connects the front end cover and the stator core and is arranged in the plastic package; the second conductive member circuit connects the stator core and the rear end cover.

[0032] This application has the following beneficial effects:

[0033] By setting a conductive part in the plastic package, the front cover is connected to the rear cover circuit through the stator core, which can effectively prevent electrical corrosion caused by shaft voltage. The conductive part is set in the plastic package and is not exposed to the complex external environment. There is no risk of aging and falling off, which can greatly improve reliability and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the implementation methods or the prior art descriptions. The drawings described below are merely exemplary, and for those of ordinary skill in the art, other implementation drawings can be derived from the provided drawings without creative work.

[0035] Figure 1 A schematic diagram of the structure of a motor according to an embodiment of the present application;

[0036] Figure 2 This is a schematic structural diagram of a rotor assembly according to an embodiment of the present application;

[0037] Figure 3 A schematic diagram of the structure of a motor with a rotor assembly removed according to an embodiment of the present application;

[0038] Figure 4 This is a schematic structural diagram of a front end cover of an embodiment of the present application;

[0039] Figure 5This is a schematic structural diagram of the rear end cover of an embodiment of the present application;

[0040] Figure 6 A cross-sectional view of a rear end cover of an embodiment of the present application;

[0041] Figure 7 This is a schematic structural diagram of a stator assembly according to an embodiment of the present application;

[0042] Figure 8 This is a schematic structural diagram of a stator assembly after plastic packaging according to an embodiment of the present application;

[0043] Fig. 9 For the embodiment of this application Figure 8 A partial enlarged view of

[0044] Fig.10 This is a schematic structural diagram of a stator core according to an embodiment of the present application;

[0045] Fig.11 This is a schematic diagram of the structure of the lower frame of an embodiment of the present application;

[0046] Fig.12 For the embodiment of this application Fig.11 Middle partial enlarged picture;

[0047] Fig.13 This is a schematic diagram of the structure of the upper frame of an embodiment of the present application;

[0048] Fig.14 For the embodiment of this application Fig.13 Middle partial enlarged picture;

[0049] Fig.15 This is a schematic structural diagram of a first clamping head according to an embodiment of the present application;

[0050] Fig.16 This is a schematic structural diagram of the first card holder of an embodiment of the present application;

[0051] Fig.17 A schematic diagram of another viewing angle of the first card holder of the embodiment of the present application;

[0052] Fig.18 This is a schematic structural diagram of a first conductive member according to an embodiment of the present application;

[0053] Fig.19 This is a schematic diagram of the connection structure of the first conductive member according to an embodiment of the present application;

[0054] Fig. 20 This is a schematic diagram of the assembly structure of the first card holder and the upper frame of the embodiment of the present application;

[0055] Fig.21 For the embodiment of this application Fig. 20 A structural diagram from another perspective;

[0056] Fig. 22 For the embodiment of this application Fig. 20 A cross-sectional view of

[0057] Fig.23 This is a schematic structural diagram of a second card holder according to an embodiment of the present application;

[0058] Fig.24 A schematic diagram of another viewing angle of the second card holder of the embodiment of the present application;

[0059] Fig.25 This is a schematic structural diagram of a second clamping head according to an embodiment of the present application;

[0060] Fig.26 This is a schematic structural diagram of a second conductive member according to an embodiment of the present application;

[0061] Fig. 27 This is a schematic diagram of the assembly structure of the second card holder and the lower frame of the embodiment of the present application;

[0062] Fig.28 For the embodiment of this application Fig. 27 A partial enlarged view of .

[0063] The reference numerals are:

[0064] 1. Stator core;

[0065] 2. lower frame; 21. terminal post; 22. lower terminal seat; 221. lower terminal seat plane; 222. second mounting hole;

[0066] 3. upper frame; 31. upper terminal seat; 311. limiting groove; 312. first mounting hole;

[0067] 4. second clamping seat; 41. second fixing portion; 411. third fixing tooth; 412. third clamping portion; 42. second rib;

[0068] 5. second clamping head; 51. outer spring portion; 52. connecting portion; 53. mounting platform portion; 54. fourth clamping portion; 55. fourth fixing tooth; 56. double hook spring portion;

[0069] 6. first clamping head; 61. waist-shaped hole; 62. connecting part; 63. connecting part; 64. mounting platform; 65. second clamping part; 66. second fixing tooth; 67. double hook spring part;

[0070] 7. first clamping seat; 71. first fixing portion; 711. first fixing tooth; 712. first clamping portion; 72. first rib; 73. limiting tooth;

[0071] 8. Front end cover; 81. Bearing chamber; 82. Mounting hole;

[0072] 9. Rear end cover; 91. Bearing chamber; 92. Mounting part; 93. Ground wire screw hole;

[0073] 10. Winding; 11. Winding stator; 12. Rivet; 13. Stator;

[0074] 14, plastic sealing part; 141, wiring hole; 142, mounting hole; 143, end cover mounting position; 144, side wall mounting position;

[0075] 15. Plastic sealed stator;

[0076] 16. rotor assembly; 161. rotating shaft; 162. front bearing; 163. rotor; 164. rear bearing;

[0077] 17. Ground screw. DETAILED DESCRIPTION

[0078] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0079] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0080] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0081] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0082] See also Figures 1 to 28 As shown, according to an embodiment of the present application, a motor assembly includes:

[0083] A front end cover 8, a stator core 1, a plastic package 14 and a rear end cover 9, wherein the front end cover 8 and the stator core 1 are arranged in the plastic package 14;

[0084] The conductive member includes a first conductive member and a second conductive member; the first conductive member is circuit-connected between the front end cover 8 and the stator core 1 and is disposed in the plastic package 14; the second conductive member is circuit-connected between the stator core 1 and the rear end cover 9.

[0085] The present application arranges a first conductive component in the plastic package 14, and connects the front end cover 8 with the rear end cover 9 through the stator core 1, so as to effectively prevent the electrical corrosion caused by the shaft voltage. The first conductive component is arranged in the plastic package 14, is not exposed to the complex external environment, and has no risk of aging and falling off, which can greatly improve the reliability and stability.

[0086] In some embodiments,

[0087] The plastic sealing member 14 is provided with a through hole, and the through hole is located on the axial side of the stator core 1 close to the rear end cover 9 . One end of the second conductive member passes through the through hole and is connected to the stator core 1 in an electrical circuit.

[0088] In the structure in which the second conductive member connects the stator core 1 and the rear end cover 9, since the plastic sealing member 14 is used to plastic seal the entire stator core 1, it is necessary to set a through hole, i.e., a mounting hole 142, on the plastic sealing member 14 to facilitate the passage of the second conductive member, thereby realizing the circuit connection between the stator core 1 and the rear end cover 9.

[0089] In some embodiments,

[0090] Both axial ends of the stator core 1 are provided with a frame located in the plastic package 14 , and the first conductive member and the second conductive member are both passed through the frame and abut against the stator core 1 .

[0091] Both ends of the stator core 1 are usually provided with frames, specifically an upper frame 3 and a lower frame 2, and all the frames are also covered by the plastic package 14. The corresponding first conductive member and the second conductive member need to pass through the frame to establish abutment circuit connection with the stator core 1.

[0092] The first conductive member and the upper frame 3 are arranged in a corresponding position, and the second conductive member and the lower frame 2 are arranged in a corresponding position.

[0093] In some embodiments,

[0094] The frame is provided with a mounting hole, and the mounting hole is arranged to penetrate the stator core 1 axially, and is used for assembling the conductive member and the circuit connection end of the stator core 1 .

[0095] Each frame is provided with a mounting hole, and is axially through-set to facilitate the assembly of the conductive parts and the abutment with the stator core 1 .

[0096] In some embodiments,

[0097] The mounting hole on the skeleton near the front end cover 8 is set as a first mounting hole 312; the first conductive member includes a first socket 7 and a first clamping head 6, the first socket 7 is arranged in the first mounting hole 312, and its bottom surface abuts against the stator core 1; one end of the first clamping head 6 is fixedly connected to the front end cover 8, and the other end is clamped with the first socket 7.

[0098] The frame close to the front end cover 8 is the upper frame 3, on which the first mounting hole 312 is arranged; the corresponding first conductive member includes a combination structure of a first socket 7 and a first clamp head 6, the first socket 7 is arranged in the first mounting hole 312, and the bottom surface is abutted against the stator core 1, and the first clamp head 6 is clamped with the first socket 7 to achieve circuit conduction.

[0099] In some embodiments,

[0100] The first clamping seat 7 is configured as a slot-shaped structure, and the outer side surface of the slot bottom abuts against the stator core 1 ; the side wall of the first clamping seat 7 is bent and extends toward the bottom of the slot to form a first clamping portion 712 for clamping the first clamping head 6 .

[0101] The shape of the first clamping seat 7 can be set as a slot-type structure, the outer side surface of the slot bottom abuts against the stator core 1, and the side wall is bent and extended toward the bottom of the slot to form a first clamping portion 712 that can clamp the first clamping head 6, so as to facilitate the connection to form the first conductive member.

[0102] In some embodiments,

[0103] The first clamping portion 712 is arranged in a wave shape along the extension direction; and / or, first fixing teeth 711 are provided on both sides of the first clamping portion 712, and limiting teeth 73 are provided at the bottom of the groove, and the extension direction of the limiting teeth 73 intersects with the extension direction of the groove.

[0104] Since the first clamping portion 712 is formed by extending two side walls, in order to improve the stable connection between the first clamping portion 712 and the first clamping head 6, the first clamping portion 712 is configured to be wavy in the extension direction.

[0105] And / or, first fixed teeth 711 can also be arranged on the two side edges of the first clamping portion 712, and the first clamping seat 7 is arranged in the first mounting hole 312, and the first fixed teeth 711 are clamped with the side walls of the first mounting hole 312, so that the structural stability is improved, and combined with the limiting teeth 73 arranged at the bottom of the slot, the stability of the abutment between the first clamping seat 7 and the stator core 1 can be ensured to prevent the two from detaching and causing a circuit breaker.

[0106] In some embodiments,

[0107] The first clamping head 6 is set as an L-shaped sheet structure, with a waist-shaped hole 61 connected to the front end cover 8 at one end, and a second clamping portion 65 clamped to the first clamping seat 7 at the other end. The second clamping portion 65 includes a hook bent to both sides and a second fixing tooth 66 protruding to both ends.

[0108] The first clamping head 6 can be set as an L-shaped sheet structure, which is screwed to the front end cover 8 through a waist-shaped hole 61 on one end, and a second clamping portion 65 is provided at the other end. The second clamping portion 65 is provided with a hook bent on both sides and a second fixing tooth 66 protruding at both ends. The hook can hook the first clamping portion 712 to prevent the first clamping head 6 from detaching, and the second fixing tooth 66 and the first fixing tooth 711 have the same function to improve the connection stability between the first clamping head 6 and the first mounting hole 312.

[0109] In some embodiments,

[0110] The mounting hole on the frame near the rear end cover 9 is set as a second mounting hole 222; the second conductive member includes a second socket 4 and a second clamp head 5, the second socket 4 is arranged in the second mounting hole 222, and its bottom surface abuts against the stator core 1; one end of the second clamp head 5 abuts against the rear end cover 9, and the other end is clamped with the second socket 4.

[0111] The skeleton close to the rear end cover 9 is the lower skeleton 2, and a second mounting hole 222 is arranged on the lower skeleton 2, so that the second socket 4 in the second conductive member is arranged in the second mounting hole 222 and abuts against the stator core 1, and one end of the second clamp head 5 abuts against the rear end cover 9, and the other end is clamped with the second socket 4 to realize the conduction of the circuit.

[0112] In some embodiments,

[0113] The second clamping seat 4 is configured as a slot-shaped structure, and the outer side surface of the slot bottom abuts against the stator core 1 ; the side wall of the second clamping seat 4 is bent and extends toward the bottom of the slot to form a third clamping portion 412 for clamping the second clamping head 5 .

[0114] The structure of the second clamping seat 4 can be set to be slot-shaped, abutting against the stator core 1 on the outer surface of the slot bottom, and the side wall is bent toward the bottom of the slot to form a third clamping portion 412 for clamping the first clamping head 6, so that the second conductive member realizes circuit connection between the rear end cover 9 and the stator core 1.

[0115] In some embodiments,

[0116] The third clamping portion 412 is arranged in a wave shape along the extension direction; and / or, third fixing teeth 411 are arranged on both sides of the third clamping portion 412 .

[0117] In order to improve the connection stability between the second clamping seat 4 and the second clamping head 5, the third clamping portion 412 is set to be wavy along the extension direction to improve the clamping strength of the third clamping portion 412 to the second clamping head 5; similarly, third fixing teeth 411 can be set on both sides of the third clamping portion 412 to improve the connection strength and stability between the second clamping seat 4 and the second mounting hole 222.

[0118] In some embodiments,

[0119] The second clamping head 5 is set as a sheet structure, one end of which is attached to the outer wall surface of the plastic packaging part 14 and abuts against the rear end cover 9, and the other end is provided with a fourth clamping part 54 clamped with the second clamping seat 4, and the fourth clamping part 54 includes a hook bent to both sides and a fourth fixing tooth 55 protruding to both ends.

[0120] The second clamping head 5 can be set as a sheet structure, one end of which is applied to the outer wall surface of the plastic sealing component 14, and the rear end cover 9 is sealed on the plastic sealing component 14 and abuts against this end; the fourth clamping part 54 at the other end is clamped with the second clamping seat 4; in order to improve the stability of the clamping, the fourth clamping part 54 includes a hook bent to both sides, which is used to prevent the second clamping head 5 from detaching from the second clamping seat 4, and fourth fixing teeth 55 are arranged on both ends of the fourth clamping part 54 to facilitate the fixation of the second clamping head 5 and the second mounting hole 222.

[0121] According to another aspect of the present application, a motor is provided, comprising the motor assembly as described above.

[0122] The following is a detailed structural description of the motor using the above-mentioned motor assembly.

[0123] The stator core 1 can be a conventional motor stator core structure; the lower frame 2 is provided with three terminals 21 for wiring the windings, and a square columnar lower terminal seat 22 is provided on one side, the top of which is a lower terminal seat plane 221, and the middle is a square through-hole-shaped second mounting hole 222.

[0124] The upper frame 3 is also provided with a square columnar upper terminal seat 31 , the middle of which is a square through-hole-shaped first mounting hole 312 , and the bottom of which is provided with four square grooves as bottom limiting grooves 311 to conveniently accommodate the limiting teeth 73 on the first clamping seat 7 .

[0125] The second clamping seat 4 is formed by stamping and bending a metal sheet, and is in a double-wing shape as a whole. The top is a second fixing portion 41 formed by bending the metal sheets on both sides inwardly, and the bottom is provided with a second rib 42. Eight symmetrically distributed barbed third fixing teeth 411 are provided downwardly from the outside, and the triangular pointed teeth are at the top, and a plurality of wavy third clamping portions 412 are provided in the middle inwardly buckled part.

[0126] The second clamping head 5 is formed by stamping and bending a metal sheet, and is in a double hook shape as a whole. An outer spring portion 51 is provided on the outside, and a connecting portion 52 formed by continuous bending is provided at the back. The angle of the connection between the outer spring portion 51 and the connecting portion 52 is slightly greater than 90°. The outer spring portion 51 is slightly tilted outward and retains a certain elasticity; a mounting platform portion 53 with a folded layer is provided at the back, which is arranged in a horizontal direction and can withstand sufficient pressure; a fourth clamping portion 54 is provided vertically downward, and four symmetrically distributed barbed fourth fixing teeth 55 are provided on both sides of the fourth clamping portion 54, with a triangular pointed tooth portion at the top, and a double hook spring leaf portion 56 bent to both sides into a hook shape is provided below the fourth clamping portion 54.

[0127] The first clamping head 6 is formed by stamping and bending a metal sheet, and is in a digital L shape as a whole. One end of the clamping head is provided with a waist-shaped waist hole 61, and there are connecting parts 62 and 63 perpendicular to each other at the back. Continuing downward is a mounting platform 64 folded into a horizontal shape, and a second clamping part 65 extending vertically downward. Four symmetrically distributed barbed second fixing teeth 66 are provided on both sides of the second clamping part, and the triangular pointed teeth are at the top, and the bottom is a double-hook spring leaf part 67 bent to both sides to form a hook shape.

[0128] The first clamping seat 7 is formed by stamping and bending a metal sheet, and is butterfly-shaped as a whole. The top is a first fixed portion 71 formed by bending the metal sheets on both sides inwardly, and the bottom is provided with four symmetrically distributed butterfly-shaped limiting teeth 73. The entire bottom is provided with a first rib 72, and eight symmetrically distributed barbed first fixed teeth 711 are provided downwardly from the outside, and the triangular pointed teeth are at the bottom, and the middle inward part is provided with a plurality of wavy first clamping portions 712.

[0129] The front end cover 8 is formed by stamping and stretching of sheet metal, and is in the shape of a cap as a whole, with a bearing chamber 81 in the middle and a plurality of evenly distributed mounting holes 82 at the brim flange.

[0130] The rear end cover 9 is a cast aluminum part, which is bowl-shaped as a whole, with a bearing chamber 91 in the middle, an annular mounting portion 92 on the outside, and a ground wire screw hole 93.

[0131] The first holder 7 is installed into the upper frame 3, and then the upper frame 3 and the lower frame 2 are inserted into the stator core 1, and then the winding 10 is wound to form a wound stator 11, wherein the installation of the upper and lower frames and the winding production are conventional production processes.

[0132] The first clamping seat 7 is installed into the first mounting hole 312 of the terminal seat 31 of the upper frame 3 from bottom to top, wherein the first fixing tooth 711 penetrates into the wall of the first mounting hole 312, and the butterfly-shaped limiting tooth 73 is installed into the limiting groove 311 at the bottom. The first fixing tooth 711 can prevent it from loosening, and the outer wall is slightly squeezed by the inner cavity of the first mounting hole 312 to form a pre-tightening force; after the upper frame 3 is installed into the stator core 1, the first edge bar 72 directly contacts the stator core 1, especially after the winding 10 is wound, the entire upper frame 3 is subjected to force, and the first edge bar 72 is close to the stator core 1, forming an effective, reliable and stable contact conduction.

[0133] The rivet 12 connects the front end cover 8 and one end of the first clamp 6, and the other end of the first clamp 6 is installed in the first clamp seat 7 on the winding stator 11 to form the stator 13. The rivet 12 rivets the mounting hole 82 on the front end cover 8 and the waist-shaped hole 61 of the first clamp 6, and the waist-shaped hole 61 can be adjusted within a certain range to ensure the overall positioning size; the first clamp 6 is loaded into the lower part through the installation platform 64 under force and is loaded into the middle gap of the wing-shaped bending first fixing part 71 of the first clamp seat 7, and the second clamping part 65 is fixed with the first clamping part 712 in a wavy shape, and is reliably contacted and connected by elastic force, and the second fixing tooth 66 penetrates into the wall of the first mounting hole 312 to prevent it from loosening, and the double-hook spring leaf part 67 enters the lower space after being squeezed by the first fixing part 71 and the first clamping part 712, fully releasing the elasticity of its double hooks and elastically fixed in the lower space. The second fixing teeth 66 and the double-hook spring leaf portion 67 are double insurance for the fixed position of the first clamp 6 , ensuring that it is fixed in the first mounting hole 312 and is in more sufficient and reliable contact and conduction with the first clamp 6 .

[0134] After the stator 13 completes the conventional injection molding process, it forms a plastic-encapsulated stator 15 with the plastic-encapsulated part 14, which is provided with three circular wiring holes 141 for exposing the terminal 21, and a square mounting hole 142 for exposing the lower terminal seat 22 on the upper frame 2, wherein the lower terminal seat plane 221 is partially exposed, and there is no plastic-encapsulated material in the second mounting hole 222, where the stator core 1 is directly exposed. There is an end cover mounting position 143 with a circle of annular steps on the outside, and there is a groove near the mounting hole 142 as a side wall mounting position 144. The remaining part of the stator 13 is wrapped in the plastic-encapsulated part 14, forming a conventional injection-molded stator structure.

[0135] The second clamping seat 4 and the second clamping head 5 are sequentially installed in the second mounting hole 222 in a vertical downward direction, wherein the outer spring portion 51 is installed on the side wall mounting position 144 and slightly springs outward, and the second rib 42 at the bottom directly contacts the stator core 1. The second clamping seat 4 and the second clamping head 5 are effectively in contact and conduction with the stator core 1.

[0136] First, the second clamping seat 4 is installed, the second fixing part 41 is stressed, the third fixing tooth 411 is inserted into the second mounting hole 222 for fixing, and after being installed to the bottom, the second rib 42 directly contacts the stator core 1 for contact and conduction. Then, the second clamping head 5 is installed by the mounting platform 53 under stress, and is pressed to the bottom of the mounting platform 53 to contact the second fixing part 41, the fourth clamping part 54 is fixed in the third clamping part 412 under elastic action, the fourth fixing tooth 55 is inserted into the second mounting hole 222 for fixing, and the double hook spring part 56 is elastically released in the space below the third clamping part 412, and the double hooks are elastically supported and fixed.

[0137] The rotor assembly 16 in the motor is composed of a front bearing 162, a rotor 163, and a rear bearing 164 mounted on a rotating shaft 161 in sequence. The rotor assembly 16 is installed in the plastic-encapsulated stator 15, the rear end cover 9 is closed, and the grounding screw 17 is installed in the grounding screw hole 93 thereof to achieve grounding, and the motor assembly is completed.

[0138] The front bearing 162 is installed in the bearing chamber 81 of the front cover, the rear bearing 164 is installed in the bearing chamber 91 of the rear cover, the mounting portion 92 of the rear cover 9 is installed in the end cover mounting position 143, and the slightly outwardly-sprung outer spring portion 51 is squeezed and contacted by the mounting portion 92 to realize the conduction between the second clamp 5 and the rear cover 9. At this point, the bearing chamber 81 and the bearing chamber 91 are connected in circuit, the front bearing 162 and the rear bearing 164 are connected in circuit, and the conduction channels are all wrapped in the plastic package 14 or in the inner cavity of the motor, which is less affected by the external environment, can adapt to harsh environments, and can be used for anti-electrical corrosion of models with large shaft voltages.

[0139] Assembly sequence:

[0140] 1. The first card holder 7 is installed into the upper frame 3;

[0141] 2. The lower frame 2 and the upper frame 3 are mounted on the stator core 1;

[0142] 3. Winding the winding 10 to form a winding stator 11;

[0143] 4. The rivet 12 connects the front end cover 8 and the first clamp 6, and the first clamp 6 is installed in the first clamp seat 7 to form a stator 13;

[0144] 5. The stator 13 and the plastic sealing part 14 are injection molded to form an injection molded stator 15;

[0145] 6. The second holder 4 and the second clamp 5 are installed in the injection-molded stator 15;

[0146] 7. Install the rotor assembly 16 into the injection-molded stator 15, close the rear end cover 9, screw in the ground screw 17, and complete the motor assembly.

[0147] The circuit conduction structure of the front and rear bearings is: front bearing 162 - front end cover 8 - rivet 12 - first clamp 6 - first clamp seat 7 - stator core 1 - second clamp seat 4 - second clamp 5 - rear end cover 9 - rear bearing 164. After being assembled into a motor, the front and rear bearings can be connected and a circuit can be formed to effectively prevent electrical corrosion caused by shaft voltage. In addition, the structure is sealed in injection molding material and is not exposed to the complex external environment, so there is no risk of aging and falling off.

[0148] It is easy for those skilled in the art to understand that the above-mentioned implementation modes can be freely combined and superimposed without conflict.

[0149] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A motor assembly, It is characterized in that include: A front end cover (8), a stator core (1), a plastic sealing member (14) and a rear end cover (9), wherein the front end cover (8) and the stator core (1) are arranged in the plastic sealing member (14); The conductive member comprises a first conductive member and a second conductive member; the first conductive member is circuit-connected between the front end cover (8) and the stator core (1) and is disposed in the plastic package (14); the second conductive member is circuit-connected between the stator core (1) and the rear end cover (9).

2. The motor assembly according to claim 1, Features: The plastic sealing member (14) is provided with a through hole, the through hole being located on the axial side of the stator core (1) close to the rear end cover (9), and one end of the second conductive member passes through the through hole to be connected to the stator core (1) circuit.

3. The motor assembly according to claim 1 or 2, Features: Both axial ends of the stator core (1) are provided with a frame located inside the plastic sealing member (14); the first conductive member and the second conductive member are both passed through the frame and abut against the stator core (1).

4. The motor assembly according to claim 3, Features: The frame is provided with a mounting hole, which is arranged to penetrate the stator core (1) axially and is used for assembling the conductive member and the circuit connection end of the stator core (1).

5. The motor assembly according to claim 4, Features: The mounting hole on the frame close to the front end cover (8) is set as a first mounting hole (312); the first conductive member includes a first clamping seat (7) and a first clamping head (6); the first clamping seat (7) is arranged in the first mounting hole (312), and its bottom surface is in contact with the stator core (1); one end of the first clamping head (6) is fixedly connected to the front end cover (8), and the other end is clamped with the first clamping seat (7).

6. The motor assembly according to claim 5, Features: The first clamping seat (7) is configured as a slot-shaped structure, and the outer side surface of the slot bottom abuts against the stator core (1); the side wall of the first clamping seat (7) is bent and extends toward the bottom of the slot to form a first clamping portion (712) that clamps the first clamping head (6).

7. The motor assembly according to claim 6, Features: The first clamping portion (712) is arranged in a wave shape along the extension direction; and / or, first fixing teeth (711) are provided on both sides of the first clamping portion (712), and limiting teeth (73) are provided at the bottom of the groove, and the extension direction of the limiting teeth (73) intersects with the extension direction of the groove.

8. The motor assembly according to any one of claims 5 to 7, Features: The first clamping head (6) is configured as an L-shaped sheet structure, one end of which is provided with a waist-shaped hole (61) connected to the front end cover (8), and the other end of which is provided with a second clamping portion (65) clamped to the first clamping seat (7), wherein the second clamping portion (65) includes a hook bent to both sides and a second fixing tooth (66) protruding to both ends.

9. The motor assembly according to claim 4, Features: The mounting hole on the frame near the rear end cover (9) is set as a second mounting hole (222); the second conductive member comprises a second clamping seat (4) and a second clamping head (5); the second clamping seat (4) is arranged in the second mounting hole (222), and its bottom surface is in contact with the stator core (1); one end of the second clamping head (5) is in contact with the rear end cover (9), and the other end is clamped with the second clamping seat (4).

10. The motor assembly according to claim 9, Features: The second clamping seat (4) is configured as a slot-shaped structure, the outer side surface of the slot bottom abutting against the stator core (1); the side wall of the second clamping seat (4) is bent and extends toward the bottom of the slot to form a third clamping portion (412) for clamping the second clamping head (5).

11. The motor assembly according to claim 10, Features: The third clamping portion (412) is arranged in a wave shape along the extension direction; and / or third fixing teeth (411) are arranged on both sides of the third clamping portion (412).

12. The motor assembly according to any one of claims 9 to 11, Features: The second clamping head (5) is configured as a sheet-like structure, one end of which is attached to the outer wall surface of the plastic sealing component (14) and abuts against the rear end cover (9), and the other end is provided with a fourth clamping portion (54) clamped with the second clamping seat (4), and the fourth clamping portion (54) includes a hook bent to both sides and a fourth fixing tooth (55) protruding to both ends.

13. A motor, It is characterized in that Comprising a motor assembly as claimed in any one of claims 1-12.

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