Spliced stator structure and motor

Abstract

The invention discloses a spliced stator structure and a motor, and the structure comprises a first iron core which is provided with a first inner yoke part and a plurality of first tooth parts, the plurality of first tooth parts are arranged at the periphery of the first inner yoke part at equal intervals in a surrounding manner, the first tooth parts are sleeved with a first coil holder, one end of each first tooth part is provided with a first outer yoke part, and the first outer yoke part is connected with the first inner yoke part; a first butt joint groove is formed between every two first outer yoke parts; the second iron core is provided with a second inner yoke part and a plurality of second tooth parts, the second tooth parts are arranged on the periphery of the second inner yoke part at equal intervals in a surrounding mode, the second tooth parts are sleeved with second coil holders, one end of each second tooth part is provided with a second outer yoke part, the second outer yoke parts are connected with the second inner yoke part, and a second butt joint groove is formed between every two outer yoke parts; the first inner yoke part is in butt joint with the second inner yoke part, the first outer yoke part is in butt joint with the second butt joint groove, the second outer yoke part is in butt joint with the first butt joint groove, and when the first iron core or the second iron core is wound independently, due to the fact that the distance between the first tooth parts or the distance between the second tooth parts is large, the winding difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to a split stator structure and a motor. Background Art

[0002] Electric Motor is a device that converts electrical energy into mechanical energy based on the principle of electromagnetic induction. It is widely used in industries, transportation, home appliances, etc. Its core function is to generate torque through the interaction between electromagnetic field and current to drive mechanical movement.

[0003] The types of motors include inner rotor motors and outer rotor motors. The core feature of inner rotor motors is that the rotor is located inside the stator and is usually composed of permanent magnets or electromagnets, while the stator is composed of winding coils; outer rotor motors are a motor with a special structure, in which the rotor is located outside the stator, and the stator is fixed in the center position, and the rotor is driven to rotate through magnetic field interaction.

[0004] The stator is the stationary part of the motor, usually composed of an iron core and windings. The iron core is laminated with silicon steel sheets to reduce eddy current losses, and the windings generate a magnetic field when energized. In an AC motor, the stator windings form a rotating magnetic field through three-phase current; in a DC motor, the stator may contain permanent magnets or electromagnets.

[0005] The motor stator usually adopts a full-circle iron core structure, which is composed of multiple adjacent teeth. A boot is provided at the end of each tooth, and a slot structure is formed between adjacent boots. In order to facilitate the winding operation, the slot size between adjacent teeth needs to be large enough so that the winding equipment can pass smoothly and complete the winding process. Too small a slot will lead to process problems such as winding difficulties, low efficiency and insufficient slot fill rate, while too large a slot will cause the adverse effect of increased cogging torque. Summary of the invention

[0006] In order to overcome the disadvantages of the prior art that the stator in the motor generally uses a whole round iron core, the iron core includes a plurality of adjacent teeth, and a larger slot is required between the adjacent teeth for the convenience of winding. If the slot is too narrow, it will cause difficulty in winding, low winding efficiency, and low slot fill rate. A larger slot will increase the tooth torque.

[0007] First aspect

[0008] The present invention provides a split stator structure, comprising:

[0009] The first iron core is provided with a first inner yoke and a plurality of first teeth, the plurality of first teeth are equidistantly arranged around the outer periphery of the first inner yoke, a first wire frame is sleeved on the first teeth, a first outer yoke is provided at one end of the first teeth, the first outer yoke is connected to the first inner yoke, and first butt joint grooves are provided between the first outer yokes;

[0010] The second iron core is provided with a second inner yoke and a plurality of second teeth. The plurality of second teeth are equidistantly arranged around the outer periphery of the second inner yoke. A second wire frame is sleeved on the second tooth. A second outer yoke is provided at one end of the second tooth. The second outer yoke is connected to the second inner yoke. Second docking grooves are provided between the outer yokes. The first inner yoke is docked with the second inner yoke, the first outer yoke is docked with the second docking groove, and the second outer yoke is docked with the first docking groove.

[0011] Optionally, the height of the first inner yoke is smaller than the height of the first outer yoke, the first inner yoke is located in the upper half of the first outer yoke, the height of the second inner yoke is smaller than the height of the first outer yoke, the second inner yoke is located in the lower half of the second outer yoke, the height of the first outer yoke is the same as the height of the second outer yoke, and the sum of the heights of the first inner yoke and the second inner yoke is equal to the height of the first outer yoke or the second outer yoke.

[0012] Optionally, a first positioning groove is provided on the inner wall of the first inner yoke portion, and a second positioning groove is provided on the inner wall of the second inner yoke portion, and the positions of the first positioning groove and the second positioning groove correspond to each other.

[0013] Optionally, a first boot is provided at the other end of the first tooth portion, and a second boot is provided at the other end of the second tooth portion. There is a tooth groove between the first boot of the first tooth portion and the first outer yoke portion, and there is also a tooth groove between the second boot of the second tooth portion and the second outer yoke portion.

[0014] Optionally, there is a notch between the first boot portion and the second boot portion, and the width of the notch is 0.5 mm to 1.5 mm.

[0015] Optionally, the first wire rack includes:

[0016] A first limiting ring, which is the same size as the first inner yoke and butts against the top of the first inner yoke;

[0017] A plurality of first bracket sleeves are equidistantly mounted around the outer periphery of the first limiting ring, corresponding to the first tooth portions one by one, and provided with first receiving grooves, wherein the tops of the first tooth portions are located in the first receiving grooves;

[0018] A plurality of second frame sleeves are respectively corresponding to the first tooth portions and are provided with second receiving grooves. The bottom of the first tooth portion is located in the second receiving groove. The first receiving groove and the second receiving groove are connected to form a receiving cavity.

[0019] Optionally, a PIN needle connection groove is provided on the first frame sleeve, and first limiting parts are respectively provided at both ends of the first frame sleeve; a PIN needle connection groove is provided on the second frame sleeve, and second limiting parts are respectively provided at both ends of the second frame sleeve.

[0020] Optionally, the second wire rack includes:

[0021] A second limiting ring, which is the same size as the second inner yoke and butts against the top of the second inner yoke;

[0022] A plurality of third bracket sleeves are equidistantly mounted around the outer periphery of the second limiting ring, corresponding to the second tooth portions one by one, and provided with third receiving grooves, wherein the bottom of the second tooth portion is located in the third receiving grooves;

[0023] A plurality of fourth frame sleeves correspond to the second tooth portions one by one and are provided with fourth receiving grooves. The top of the second tooth portion is located in the fourth receiving groove. The third receiving groove and the fourth receiving groove are connected to form a receiving cavity.

[0024] Optionally, the third frame sleeve is provided with a PIN needle connection groove, and the third frame sleeve is provided with third limiting parts at both ends respectively, the fourth frame sleeve is provided with a PIN needle connection groove, and the second frame sleeve is provided with fourth limiting parts at both ends respectively.

[0025] Second aspect

[0026] The present invention provides a motor, comprising the split stator structure described in the first aspect.

[0027] The beneficial effects of the present invention are as follows: when winding the first core or the second core individually, due to the large spacing between the first tooth portions or the second tooth portions, the winding equipment can perform winding in the large spacing, which greatly reduces the difficulty of winding. Due to the increase in spacing, the difficulty of winding is reduced, and thus winding with a high slot fill rate can be achieved more conveniently. In general, the stator core is divided into the first core and the second core, and the winding is performed separately and then connected, which greatly reduces the difficulty of winding. The reduction in the difficulty of winding facilitates the improvement of the slot fill rate after winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 is a schematic diagram of the structure of the combined stator structure after winding in some embodiments;

[0030] Figure 2 is a schematic diagram of assembling a spliced ​​stator structure in some embodiments;

[0031] Figure 3 is a schematic diagram of the structural disassembly of the spliced ​​stator structure in some embodiments;

[0032] Figure 4 is a schematic diagram of the structural disassembly of the spliced ​​stator structure in some embodiments;

[0033] Figure 5 is a schematic diagram of the structural disassembly of the first core in some embodiments;

[0034] Figure 6 It is a schematic diagram of the structural disassembly of the second core in some embodiments.

[0035] Description of reference numerals:

[0036] 1. Assembled stator structure; 2. Enameled wire; 3. First iron core; 301. First inner yoke; 302. First tooth; 303. First bobbin; 304. First outer yoke; 305. First docking groove; 4. Second iron core; 401. Second inner yoke; 402. Second tooth; 403. Second bobbin; 404. Second outer yoke; 405. Second docking groove; 306. First positioning groove; 406. Second positioning groove; 307. First shoe; 407. The second boot portion; 101, notch; 308, first limiting ring; 309, first frame; 310, first receiving slot; 311, second frame; 312, second receiving slot; 5, PIN needle connecting slot; 313, first limiting portion; 314, second limiting portion; 408, second limiting ring; 409, third frame; 410, third receiving slot; 411, fourth frame; 412, fourth receiving slot; 413, third limiting portion; 414, fourth limiting portion. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0038] The present invention provides a split stator structure 1, which is applied to the internal structure of a motor and serves as a stationary component inside the motor. After being energized, a magnetic field is generated to drive the rotor to rotate, and the structure comprises: a first iron core 3, which is provided with a first inner yoke 301 and a plurality of first teeth 302, wherein the plurality of first teeth 302 are equidistantly arranged around the outer periphery of the first inner yoke 301, a first wire frame 303 is sleeved on the first teeth 302, a first outer yoke 304 is provided at one end of the first teeth 302, the first outer yoke 304 is connected to the first inner yoke 301, and a first butt joint groove 305 is provided between the first outer yokes 304; The second core 4 is provided with a second inner yoke 401 and a plurality of second teeth 402. The plurality of second teeth 402 are equidistantly arranged around the outer periphery of the second inner yoke 401. A second wire frame 403 is sleeved on the second tooth 402. A second outer yoke 404 is provided at one end of the second tooth 402. The second outer yoke 404 is connected to the second inner yoke 401. Second docking grooves 405 are provided between the outer yokes. The first inner yoke 301 is docked with the second inner yoke 401. The first outer yoke 304 is docked with the second docking groove 405. The second outer yoke 404 is docked with the first docking groove 305.

[0039] During implementation, a first bobbin 303 is installed on the first tooth portion 302 of the first core 3, and a wire is wound on the first bobbin 303 of each first tooth portion 302, and finally a winding is formed on the first bobbin 303; similarly, a second bobbin 403 is installed on the second tooth portion 402 of the second core 4, and a wire is wound on the second bobbin 403 of the second tooth portion 402, and finally a winding is formed on the second bobbin 403; when the first bobbin 303 on the first core 3 forms a winding and the second bobbin 4 on the second core 4 forms a winding, After the winding is formed on 403, the first iron core 3 and the second iron core 4 are connected. First, the first inner yoke 301 is connected to the second inner yoke 401, the first outer yoke 304 is connected to the second connection groove 405, and the second outer yoke 404 is connected to the first connection groove 305. After the connection, there is a second tooth 402 between every two first tooth portions 302, and similarly, there is a first tooth 302 between every two second tooth portions 402, and finally a complete stator core with winding is formed; the present invention In the provided split stator structure 1, the split stator structure 1 is divided into a first core 3 and a second core 4. When winding, the wires are wound on the first core 3 and the second core 4 respectively. Since the core needs to be butted together to form a complete core, the spacing between each two first teeth 302 of the first core 3 will be larger than that between traditional stator teeth. Similarly, the spacing between each two second teeth 402 of the second core 4 will also be larger than that between traditional stator teeth. When winding the first core 3 or the second core 4 separately, due to the large spacing between the first teeth 302 or the second teeth 402, the winding equipment can run the winding in a large spacing, which greatly reduces the difficulty of winding. Due to the increase in spacing and the reduction in winding difficulty, winding with a high slot fill rate can be more conveniently achieved. In general, the stator core is divided into the first core 3 and the second core 4, and the winding is done separately and then butted together, which greatly reduces the difficulty of winding. The reduction in winding difficulty makes it easier to improve the slot fill rate after winding.

[0040] Furthermore, the first inner yoke 301 is annular, the first outer yoke 304 on the first tooth 302 is a portion extending from the end to both sides, the width of the first outer yoke 304 is greater than the width of the first tooth 302, the first outer yoke 304 is integrally formed with the first inner yoke 301, the first tooth 302 and the first outer yoke 304 are also integrally formed, and the first iron core 3 is formed by stamping and riveting silicon steel sheets. Similarly, the second inner yoke 401 is annular, the second outer yoke 404 on the second tooth 402 is a portion extending from the end to both sides, the width of the second outer yoke 404 is greater than the width of the second tooth 402, the second outer yoke 404 is integrally formed with the second inner yoke 401, the second tooth 402 and the second outer yoke 404 are also integrally formed, and the second iron core 4 is formed by stamping and riveting silicon steel sheets.

[0041] In some embodiments, the height of the first inner yoke 301 is less than the height of the first outer yoke 304, the first inner yoke 301 is located in the upper half of the first outer yoke 304, the height of the second inner yoke 401 is less than the height of the first outer yoke 304, the second inner yoke 401 is located in the lower half of the second outer yoke 404, the first outer yoke 304 and the second outer yoke 404 have the same height, and the sum of the heights of the first inner yoke 301 and the second inner yoke 401 is equal to the height of the first outer yoke 304.

[0042] During implementation, after the first inner yoke 301 and the second inner yoke 401 are connected, the lower half of the first outer yoke 304 contacts the side of the second inner yoke 401, and the upper half of the second outer yoke 404 contacts the side wall of the first inner yoke 301. The total height of the first inner yoke 301 and the second inner yoke 401 after connection is the same as the first outer yoke 304 or the second outer yoke 404, so that the first outer yoke 304 and the second outer yoke 404 just surround the side walls of the first inner yoke 301 and the second inner yoke 401 at equal distances, and a completed stator core is formed after splicing.

[0043] Furthermore, the first inner yoke 301 and the second inner yoke 401 are annular. When the spliced ​​stator structure 1 provided by the present invention is installed on the motor, the first inner yoke 301 and the second inner yoke 401 are sleeved on the motor shaft. The height of the first inner yoke 301 is equal to half of the height of the first outer yoke 304. The first inner yoke 301 is located in the upper half of the first outer yoke 304. The top of the first inner yoke 301 is flush with the top of the first outer yoke 304. The height of the second inner yoke 401 is equal to half of the height of the second outer yoke 404. The bottom of the second inner yoke 401 is flush with the bottom of the second outer yoke 404. After docking, the bottom of the first inner yoke 301 conflicts with the top of the second inner yoke 401, the top of the first inner yoke 301 is flush with the top of the second outer yoke 404, and the bottom of the second inner yoke 401 is flush with the bottom of the first outer yoke 304, forming a stator core with complete inner yoke and outer yoke.

[0044] In some embodiments, a first positioning groove 306 is provided on the inner wall of the first inner yoke 301 , and a second positioning groove 406 is provided on the inner wall of the second inner yoke 401 . The positions of the first positioning groove 306 and the second positioning groove 406 correspond to each other.

[0045] When the first core 3 or the second core 4 is wound, it is necessary to position the first core 3 or the second core 4. A first positioning groove 306 is set on the first inner yoke 301, and the first positioning groove 306 can be used to position the first core 3. Similarly, a second positioning groove 406 is set on the second inner yoke 401, and the second positioning groove 406 can also be used to position the second core 4. The positions of the first positioning groove 306 and the second positioning groove 406 correspond to each other. When the first core 3 and the second core 4 are connected, they can also be spliced ​​according to the positions of the first positioning groove 306 and the second positioning groove 406. Moreover, positioning is also required when the first core 3 and the second core 4 are spliced. The first positioning groove 306 and the second positioning groove 406 can also play a positioning role when the first core 3 and the second core 4 are spliced.

[0046] In some embodiments, a first boot 307 is provided at the other end of the first tooth portion 302, and a second boot 407 is provided at the other end of the second tooth portion 402. There is a tooth groove between the first boot 307 of the first tooth portion 302 and the first outer yoke portion 304, and there is also a tooth groove between the second boot 407 of the second tooth portion 402 and the second outer yoke portion 404.

[0047] During implementation, the first shoe 307 and the first outer yoke 304 form a tooth groove on the first tooth portion 302. After the first wire frame 303 is sleeved on the first tooth portion 302, the wire is wound on the first wire frame 303 and the wire is located at a position corresponding to the tooth groove.

[0048] Furthermore, the first outer yoke portion 304 is a portion extending from one end of the first tooth portion 302 to both sides, and the width of the first outer yoke portion 304 is greater than that of the first tooth portion 302; the second outer yoke portion 404 is a portion extending from one end of the second tooth portion 402 to both sides, and the width of the second outer yoke portion 404 is also greater than that of the second tooth portion 402; the first boot portion 307 is a portion extending from the other end of the first tooth portion 302 to both sides, and the width of the first boot portion 307 is greater than that of the first tooth portion 302, and tooth grooves are formed on both sides of the first tooth portion 302; the second boot portion 407 is a portion extending from the other end of the second tooth portion 402 to both sides, and tooth grooves are formed on both sides of the second tooth portion 402.

[0049] In order to facilitate winding, a conventional stator needs to leave a larger slot 101 between adjacent teeth, that is, a larger slot 101 is left between the boots of each tooth. However, a larger slot 101 will increase the cogging torque.

[0050] In some embodiments, a notch 101 is provided between the first boot portion 307 and the second boot portion 407 , and the width of the notch 101 is 0.5 mm to 1.5 mm.

[0051] During implementation, since the first core 3 and the second core 4 are wound separately in the present application, a large spacing is left between the first teeth 302 on the first core 3, and a large spacing is also left between the second teeth 402 of the second core 4. The width of the slot 101 of the first boot 307 and the second boot 407 after splicing can be preset. After the winding is completed, the first core 3 and the second core 4 are spliced, the first tooth 302 and the second tooth 402 are adjacent, the first boot 307 on the first tooth 302 and the second boot 407 on the second tooth 402 have a slot 101, and the width range of the slot 101 is 0.5mm to 1.5mm. The slot 101 is very small and can greatly reduce the tooth torque. The first core 3 and the second core 4 are wound separately, and there is no need to consider increasing the width of the slot 101 between the first boot 307 and the second boot 407 for the convenience of winding.

[0052] In some embodiments, the first wire frame 303 includes: a first limiting ring 308, which is the same size as the first inner yoke portion 301 and docked with the top of the first inner yoke portion 301; a plurality of first frame sleeves 309, which are equidistantly arranged around the outer circumference of the first limiting ring 308, which correspond one-to-one to the first tooth portion 302, and are provided with a first receiving groove 310, and the top of the first tooth portion 302 is located in the first receiving groove 310; a plurality of second frame sleeves 311, which correspond one-to-one to the first tooth portion 302, and are provided with a second receiving groove 312, and the bottom of the first tooth portion 302 is located in the second receiving groove 312, and the first receiving groove 310 and the second receiving groove 312 are docked to form a receiving cavity.

[0053] During implementation, the first limiting ring 308 is docked with the top of the first inner yoke 301, and each first frame sleeve 309 is docked with each first tooth portion 302 one by one, so that the top of the first tooth portion 302 enters the first receiving groove 310 of the first frame sleeve 309, and each second frame sleeve 311 is also docked with each first tooth portion 302 one by one, so that the bottom of the first tooth portion 302 enters the second receiving groove 312. After assembly, the first frame sleeve 309 and the second frame sleeve 311 are docked on the first tooth portion 302, and the first receiving groove 310 and the second receiving groove 312 form a receiving cavity. The first tooth portion 302 is located in the receiving cavity. When winding, just wind on the first frame sleeve 309 and the second frame sleeve 311.

[0054] Furthermore, the first limiting ring 308 and the first frame sleeve 309 are integrally connected, and the plurality of second frame sleeves 311 are each a separate component.

[0055] In some embodiments, the first frame sleeve 309 is provided with a PIN needle connecting groove 5, and the first frame sleeve 309 has first limiting portions 313 at both ends. The second frame sleeve 311 is provided with a PIN needle connecting groove 5, and the second frame sleeve 311 has second limiting portions 314 at both ends.

[0056] During implementation, a PIN needle connecting groove 5 is set on the first frame sleeve 309 and the second frame sleeve 311. When the spliced ​​stator structure 1 provided in the present application is installed in the motor, the motor is provided with a PCB board, and the PIN needles on the PCB board are connected to the PIN needle connecting groove 5 to realize the electrical connection between the PCB board and the spliced ​​stator structure 1. The first limiting portion 313 and the second limiting portion 314 are used to limit the wound wire.

[0057] In some embodiments, the second wire rack 403 includes: a second limiting ring 408, which is the same size as the second inner yoke 401 and docked with the top of the second inner yoke 401; a plurality of third frame sleeves 409, which are equidistantly arranged around the outer circumference of the second limiting ring 408, which correspond one-to-one to the second tooth portion 402, and are provided with a third accommodating groove 410, and the bottom of the second tooth portion 402 is located in the third accommodating groove 410; a plurality of fourth frame sleeves 411, which correspond one-to-one to the second tooth portion 402, and are provided with a fourth accommodating groove 412, and the top of the second tooth portion 402 is located in the fourth accommodating groove 412, and the third accommodating groove 410 is docked with the fourth accommodating groove to form an accommodating cavity.

[0058] During implementation, the second limiting ring 408 is docked with the bottom of the second inner yoke 401, and each third frame sleeve 409 is docked with each second tooth portion 402 one by one, so that the bottom of the second tooth portion 402 enters the third receiving groove 410 of the third frame sleeve 409, and each fourth frame sleeve 411 is also docked with each second tooth portion 402 one by one, so that the top of the second tooth portion 402 enters the fourth receiving groove 412. After assembly, the third frame sleeve 409 and the fourth frame sleeve 411 are docked on the second tooth portion 402, and the third receiving groove 410 and the fourth receiving groove 412 form a receiving cavity. The second tooth portion 402 is located in the receiving cavity. When winding, just wind on the third frame sleeve 409 and the fourth frame sleeve 411.

[0059] Furthermore, the second limiting ring 408 and the third frame sleeve 409 are integrally connected, and the plurality of fourth frame sleeves 411 are each a separate component.

[0060] In some embodiments, the third frame sleeve 409 is provided with a PIN needle connecting groove 5, and the third frame sleeve 409 is provided with third limiting parts 413 at both ends. The fourth frame sleeve 411 is provided with a PIN needle connecting groove 5, and the second frame sleeve 311 is provided with fourth limiting parts 414 at both ends.

[0061] During implementation, a PIN needle connecting groove 5 is set on the third frame sleeve 409 and the fourth frame sleeve 411. When the spliced ​​stator structure 1 provided in the present application is installed in the motor, the motor is provided with a PCB board, and the PIN needles on the PCB board are connected to the PIN needle connecting groove 5 to realize the electrical connection between the PCB board and the spliced ​​stator structure 1. The third limiting portion 413 and the fourth limiting portion 414 are used to limit the wound wire.

[0062] The present invention provides a motor, including the split stator structure 1 in the above embodiment. The split stator structure 1 has been described in detail in the above embodiment and will not be repeated here. It should be noted that the split stator structure 1 described in the embodiment of the present invention is applied to an outer rotor motor.

[0063] During implementation, the spliced ​​stator structure 1 is installed in a motor, and the stator in the motor is usually wrapped with BMC (Bulk Molding Compound) material to improve the stability, insulation, pressure resistance, mechanical strength and heat dissipation performance of the spliced ​​stator structure 1.

[0064] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A spliced ​​stator structure, characterized in that: include: The first iron core is provided with a first inner yoke and a plurality of first teeth, the plurality of first teeth are equidistantly arranged around the outer periphery of the first inner yoke, a first wire frame is sleeved on the first teeth, a first outer yoke is provided at one end of the first teeth, the first outer yoke is connected to the first inner yoke, and first butt joint grooves are provided between the first outer yokes; The second iron core is provided with a second inner yoke and a plurality of second teeth. The plurality of second teeth are equidistantly arranged around the outer periphery of the second inner yoke. A second wire frame is sleeved on the second tooth. A second outer yoke is provided at one end of the second tooth. The second outer yoke is connected to the second inner yoke. Second docking grooves are provided between the outer yokes. The first inner yoke is docked with the second inner yoke, the first outer yoke is docked with the second docking groove, and the second outer yoke is docked with the first docking groove.

2. The split stator structure according to claim 1, characterized in that: The height of the first inner yoke part is smaller than the height of the first outer yoke part, and the first inner yoke part is located in the upper half of the first outer yoke part. The height of the second inner yoke part is smaller than the height of the first outer yoke part, and the second inner yoke part is located in the lower half of the second outer yoke part. The height of the first outer yoke part is the same as that of the second outer yoke part, and the sum of the heights of the first inner yoke part and the second inner yoke part is equal to the height of the first outer yoke part or the second outer yoke part.

3. The split stator structure according to claim 1, characterized in that: A first positioning groove is arranged on the inner wall of the first inner yoke part, and a second positioning groove is arranged on the inner wall of the second inner yoke part, and the positions of the first positioning groove and the second positioning groove correspond to each other.

4. The split stator structure according to claim 1, characterized in that: A first shoe is provided at the other end of the first tooth portion, and a second shoe is provided at the other end of the second tooth portion. A tooth groove is formed between the first shoe of the first tooth portion and the first outer yoke portion, and a tooth groove is formed between the second shoe of the second tooth portion and the second outer yoke portion.

5. The split stator structure according to claim 1, characterized in that: A notch is provided between the first shoe portion and the second shoe portion, and the width of the notch is 0.5 mm to 1.5 mm.

6. The split stator structure according to claim 1, characterized in that: The first wire frame includes: A first limiting ring, which is the same size as the first inner yoke and butts against the top of the first inner yoke; A plurality of first bracket sleeves are equidistantly mounted around the outer periphery of the first limiting ring, corresponding to the first tooth portions one by one, and provided with first receiving grooves, wherein the tops of the first tooth portions are located in the first receiving grooves; A plurality of second frame sleeves are respectively corresponding to the first tooth portions and are provided with second receiving grooves. The bottom of the first tooth portion is located in the second receiving groove. The first receiving groove and the second receiving groove are connected to form a receiving cavity.

7. The split stator structure according to claim 6, characterized in that: The first frame sleeve is provided with a PIN needle connection groove, and the two ends of the first frame sleeve are respectively provided with first limiting parts. The second frame sleeve is provided with a PIN needle connection groove, and the two ends of the second frame sleeve are respectively provided with second limiting parts.

8. The split stator structure according to claim 1, characterized in that: The second wire frame includes: A second limiting ring, which is the same size as the second inner yoke and butts against the top of the second inner yoke; A plurality of third bracket sleeves are equidistantly mounted around the outer periphery of the second limiting ring, corresponding to the second tooth portions one by one, and provided with third receiving grooves, wherein the bottom of the second tooth portion is located in the third receiving grooves; A plurality of fourth frame sleeves correspond to the second tooth portions one by one and are provided with fourth receiving grooves. The top of the second tooth portion is located in the fourth receiving groove. The third receiving groove and the fourth receiving groove are connected to form a receiving cavity.

9. The split stator structure according to claim 8, characterized in that: The third frame sleeve is provided with a PIN needle connection groove, and the two ends of the third frame sleeve are respectively provided with third limiting parts. The fourth frame sleeve is provided with a PIN needle connection groove, and the two ends of the second frame sleeve are respectively provided with fourth limiting parts.

10. A motor, characterized in that: It comprises the split stator structure as described in any one of claims 1 to 9.

Images