A high-precision motor convenient to assemble and disassemble

Abstract

A high-precision motor convenient to assemble and disassemble, comprising a fan blade, a base, a rotor and a stator; the base is provided with a containing cavity and a fixing frame, and the fixing clamp is provided with coaxial first and second fixing holes; the rotor comprises a shaft, a magnet sleeved in the middle part of the shaft, and first and second bearings sleeved at the first and second ends of the shaft, the rotor can pass through the containing cavity to enter the fixing frame, and the first and second bearings are installed into the first and second fixing holes respectively, and the first end of the shaft extends into the containing cavity and is inserted into the fan blade; the stator comprises an insulating frame detachably connected with the base, and a pin and a metal block installed on the insulating frame, the insulating frame is provided with a sleeve cavity movably sleeving the rotor, and the metal block partially extends into the sleeve cavity to correspond to the magnet; compared with the prior art, the scheme can simplify the assembly steps, ensure the structural stability, reduce the assembly error, prolong the service life, and facilitate disassembly and maintenance to reduce the maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, and in particular relates to a high-precision motor that is easy to assemble and disassemble. Background Technology

[0002] Electric motors are widely used as key components of mechanical equipment. Currently, there are various types of electric motors on the market. For example, invention patent application number 202411004450.8 mentions one type of electric motor (see the appendix of that patent for details). Figure 2 The main components include fan blades, front bearing housing, rotor, stator, and rear bearing housing. During assembly, the rotor must first be coaxially installed onto the front bearing housing, then the stator is used to mount the rotor, followed by the rear bearing housing being coaxially mounted onto the rotor and pressed against the stator. The rear bearing housing is then locked and fixed to the front bearing housing using fasteners such as pads, springs, and bolts. Finally, the fan blades are installed onto the rotor.

[0003] This motor can reduce its own vibration to some extent, but it still has the following drawbacks:

[0004] Firstly, the motor involves the precise assembly and debugging of multiple components. The assembly process is cumbersome and the production efficiency is low. Furthermore, during the assembly process, fasteners such as foot pads, springs, and bolts are prone to being lost, damaged, or improperly installed, which affects the overall stability.

[0005] Secondly, the motor uses a split bearing housing, which has a large assembly error. The accumulation of errors will result in insufficient concentricity between the rotor and the front and rear bearing housings, causing the motor to vibrate when running at high speed, affecting working accuracy, and may even cause fasteners to loosen, thus reducing the overall service life.

[0006] Third, the motor has many highly integrated components, making disassembly and repair difficult. Even a simple local fault may require the replacement of the entire unit, resulting in a significant increase in maintenance and usage costs.

[0007] Therefore, it is necessary to design a high-precision motor that is easy to assemble and disassemble to solve the above problems. Utility Model Content

[0008] Technical problems to be solved

[0009] This invention provides a high-precision motor that is easy to assemble and disassemble. It simplifies assembly steps and ensures structural stability, reduces assembly errors and extends service life, and also facilitates disassembly and maintenance to reduce maintenance costs.

[0010] Technical solution

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A high-precision motor that is easy to assemble and disassemble includes fan blades, a base, a rotor, and a stator. One end of the base has an outwardly opening cavity for housing the fan blades, and the other end of the base has a fixing frame. The fixing frame has a first fixing hole and a second fixing hole arranged coaxially. The rotor includes a shaft, a magnet sleeved and fixed in the middle of the shaft, and a first bearing and a second bearing sleeved and fixed at both ends of the shaft. The rotor can pass through the cavity into the fixing frame, and the first bearing and the second bearing are synchronously installed into the first fixing hole and the second fixing hole, respectively. The first end of the shaft protrudes from the first bearing into the cavity and is inserted to fix the fan blades. The stator includes an insulating frame, pins, and a metal block. The pins and the metal block are both mounted on the insulating frame. The insulating frame is detachably mounted on the base, and the insulating frame has a coaxial cavity that can movably accommodate the rotor. The metal block extends into the cavity to correspond to the magnet.

[0013] Preferably, the magnet is bonded to the shaft by adhesive application, and the first bearing and the second bearing are press-fitted to the ends of the shaft by interference fit to form the rotor; the insulating frame, the pins and the metal block are integrally formed by adhesive coating process.

[0014] Preferably, the inner diameter of the first fixing hole is larger than the inner diameter of the second fixing hole to facilitate one-time processing and ensure concentricity; the outer diameter of the first bearing is larger than the outer diameter of the second bearing, and is adapted to the first fixing hole and the second fixing hole respectively.

[0015] Preferably, the base and the fixing frame are integrally formed. After the receiving cavity is machined on the base using a CNC machine tool, the first fixing hole and the second fixing hole are machined in one go using the CNC machine tool / drilling machine.

[0016] Preferably, the rotor further includes a rubber ring, which is coaxially mounted on the first bearing and abuts against the inner wall of the first fixing hole.

[0017] Preferably, the rotor further includes a steel sleeve that coaxially wraps around the outer circumference of the magnet.

[0018] Preferably, the rotor further includes two collars, which are coaxially fitted onto the shaft to fix it and respectively abut against both ends of the magnet.

[0019] Preferably, the two collars are press-fitted to the shaft in an interference fit.

[0020] Preferably, the side wall of the fixing frame has a plurality of circumferentially arranged hollow openings to expose the magnets of the rotor; the insulating frame has a plurality of blocks inside, the plurality of blocks blocking the plurality of hollow openings and forming the cavity; the metal block has a plurality of protrusions, the plurality of protrusions extending to the plurality of blocks to correspond synchronously with the magnets.

[0021] Preferably, there are three cutouts, and there are three corresponding blocks and three corresponding protrusions.

[0022] Preferably, there is a gap between the stop block and the cutout.

[0023] Preferably, the fixing frame has multiple heat dissipation vents on each side of the circumference of the first fixing hole, which are connected to the receiving cavity.

[0024] Preferably, the metal block is made of silicon steel sheet, and the base and the insulating frame are both made of plastic.

[0025] Preferably, the insulating frame has multiple locking positions arranged in a circumferential array; the base is provided with a limiting block and multiple supporting arms arranged in a circumferential array, the limiting block and the multiple supporting arms all extending along the length direction of the fixing frame, and each of the multiple supporting arms has a buckle at its end away from the base; wherein, the multiple supporting arms can simultaneously abut against the outer circumferential wall of the insulating frame so that the rotor is coaxially fitted into the sleeve cavity, the limiting block can abut against the insulating frame so that the metal block aligns with the magnet, and the multiple buckles can engage with the multiple locking positions one by one to install the insulating frame on the base.

[0026] Preferably, the insulating frame is provided with a limiting groove, and when the insulating frame is installed on the base, the limiting block is inserted into the limiting groove.

[0027] Preferably, adhesive is applied to the joint between the limiting block and the limiting groove for fixation.

[0028] Preferably, it also includes a cover, which is mounted on the base and covers the opening of the receiving cavity, and the cover is provided with a circular through groove communicating with the receiving cavity and the outside, and a plurality of guide vanes are arranged in a circumferential array in the circular through groove.

[0029] Preferably, the cover is bonded and fixed to the base by applying adhesive.

[0030] (III) Beneficial Effects

[0031] This utility model provides a high-precision motor that is easy to assemble and disassemble. By designing a new base to accommodate the rotor, fan blades and stator, the assembly steps can be simplified and the structural stability can be ensured. It can also reduce assembly errors and extend service life. At the same time, it is convenient to disassemble and repair to reduce maintenance costs. In addition, compared with conventional motors, the assembly method of this motor is simpler and can greatly improve assembly efficiency, which is conducive to the mass production of motors. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;

[0034] Figure 2 A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;

[0035] Figure 3 It shows Figure 2 The main view;

[0036] Figure 4 It shows Figure 3 AA section view;

[0037] Figure 5 An exploded view of the overall structure of this utility model is shown. Figure 1 ;

[0038] Figure 6 An exploded view of the overall structure of this utility model is shown. Figure 2 ;

[0039] Figure 7 A schematic diagram of the structure of the base of this utility model is shown. Figure 1 ;

[0040] Figure 8 A schematic diagram of the structure of the base of this utility model is shown. Figure 2 ;

[0041] Figure 9 An exploded view of the rotor of this utility model is shown;

[0042] Figure 10 An exploded view of the stator of this utility model is shown. Figure 1 ;

[0043] Figure 11 An exploded view of the stator of this utility model is shown. Figure 2 .

[0044] In the diagram: 1. Base, 10. Receiving cavity, 11. Fixing frame, 111. First fixing hole, 112. Second fixing hole, 113. Hollow opening, 1130. Gap, 114. Heat dissipation vent, 12. Limiting block, 13. Support arm, 130. Buckle, 2. Rotor, 21. Shaft, 211. First bearing, 212. Second bearing, 213. Abutment, 22. Magnet, 23. Rubber ring, 24. Steel sleeve, 25. Collar, 3. Stator, 31. Insulating frame, 310. Cavity, 311. Stop block, 312. Locking position, 313. Limiting groove, 32. Pin, 33. Metal block, 331. Protrusion, 4. Fan blade, 5. Cover, 51. Circular through slot, 510. Guide plate. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0046] See appendix Figure 1 -Appendix Figure 6 A high-precision motor that is easy to assemble and disassemble includes a base 1, a rotor 2, a stator 3, and fan blades 4. One end of the base 1 has an outwardly opening receiving cavity 10 for placing the fan blades 4, and the other end of the base 1 has a fixing frame 11. The fixing frame 11 has a first fixing hole 111 and a second fixing hole 112 coaxially arranged. The rotor 2 includes a shaft 21, a magnet 22 sleeved and fixed in the middle of the shaft 21, and a first bearing 211 and a second bearing 212 sleeved and fixed at both ends of the shaft 21. The bearing 212 is synchronously installed into the first fixing hole 111 and the second fixing hole 112 respectively. The first end of the shaft 21 protrudes from the first bearing 211 into the receiving cavity 10 and is inserted to fix the fan blade 4. The stator 3 includes an insulating frame 31, pins 32 and metal blocks 33. Pins 32 and metal blocks 33 are both installed on the insulating frame 31. The insulating frame 31 is detachably installed on the base 1. The insulating frame 31 has a coaxial cavity 310 that can movably accommodate the rotor 2. The metal block 33 extends to the cavity 310 to correspond to the magnet 22.

[0047] Specifically, during assembly, the rotor 2 is first placed at the opening of the receiving cavity 10, and the rotor 2 is moved through the receiving cavity 10 into the fixing frame 11, so that the first bearing 211 and the second bearing 212 are installed synchronously into the first fixing hole 111 and the second fixing hole 112 respectively. Then, the fan blade 4 is moved into the receiving cavity 10 and inserted and fixed with the head end of the shaft 21. Finally, the insulating frame 31 is installed on the base 1 so that the metal block 33 corresponds to the magnet 22. During disassembly, the staff can choose to disassemble the fan blade 4 and the stator 3 separately as needed. After disassembling the fan blade 4, the rotor 2 can be removed separately without affecting the stator 3, which is convenient for targeted maintenance.

[0048] In summary, this utility model, by designing a new base 1 to accommodate the rotor 2, fan blades 4, and stator 3, solves the defects of existing motors and has at least the following advantages:

[0049] Firstly, by reducing the number of parts, assembly and debugging are reduced, simplifying the assembly process and improving production efficiency. At the same time, the motor structure is made more compact, improving the utilization of the internal space of the motor and reducing the overall weight. Moreover, during the assembly process, the installation method of stator 3 is more flexible, no longer limited by fasteners such as feet, springs and bolts, avoiding problems of improper installation and ensuring the stability of the overall structure.

[0050] Secondly, by adopting an integrated base 1 with a coaxial first fixing hole 111 and a second fixing hole 112, the first bearing 211 and the second bearing 212 can be installed synchronously. Therefore, the coaxiality of the rotor 2 and the center line of the base 1 can be improved, assembly errors can be eliminated, the possibility of vibration of the motor during high-speed operation can be effectively reduced, the working accuracy can be guaranteed, and the loosening of components such as rotor 2 and stator 3 can be prevented, thus extending the overall service life.

[0051] Thirdly, the integrated base 1 allows the rotor 2, stator 3 and fan blades 4 to be installed independently. During disassembly, only one side of the components needs to be handled, which is convenient for staff to disassemble and reduces the difficulty of maintenance. In addition, when a partial fault occurs in the motor, staff can disassemble the damaged parts for maintenance without replacing the whole unit, which reduces maintenance and usage costs.

[0052] It should be noted that there are various ways to fix the components of rotor 2 and stator 3, and this utility model does not limit them. In order to improve the stability of use and make the dynamic balance of rotor 2 meet the requirements, in this embodiment, magnet 22 is glued to shaft 21, and first bearing 211 and second bearing 212 are press-fitted to the two ends of shaft 21 with interference fit to form rotor 2; while insulating frame 31, pin 32 and metal block 33 can be integrally formed by rubber coating process.

[0053] See appendix Figure 4-Appendix Figure 8 The inner diameter of the first fixing hole 111 is larger than the inner diameter of the second fixing hole 112 to facilitate one-time machining; the outer diameter of the first bearing 211 is larger than the outer diameter of the second bearing 212, and they are respectively adapted to the first fixing hole 111 and the second fixing hole 112; the one-time machining design of the first fixing hole 111 and the second fixing hole 112 can ensure that the concentricity tolerance between them is ≤0.005mm, so that after the first bearing 211 and the second bearing 212 are installed, the rotor 2 and the base 1 have a high degree of coaxiality, thereby reducing the assembly error when the rotor 2 is installed on the fixing frame 11, improving the coaxiality of the rotor 2 and the base 1 axis, and reducing the possibility of vibration of the motor when running at high speed.

[0054] Furthermore, in this embodiment, the base 1 and the fixing frame 11 are integrally formed to provide installation stability for the rotor 2 and the stator 3, and to help reduce vibration and maintain the dynamic balance of the rotor 2. The integrally formed base 1 and fixing frame 11 also make it convenient for workers to use CNC machine tools to process the receiving cavity 10 on the base 1, and then directly process the first fixing hole 111 and the second fixing hole 112 in one go using CNC machine tools / drilling machines.

[0055] See appendix Figure 4 -Appendix Figure 6 and attached Figure 9 The rotor 2 also includes a rubber ring 23, which is coaxially mounted on the first bearing 211 and abuts against the inner wall of the first fixing hole 111. The design of the rubber ring 23 allows the first bearing 211 to be stably mounted in the first fixing hole 111, while reducing the wear of the first bearing 211 or the first fixing hole 111 and maintaining the coaxiality of the rotor 2 and the base 1 axis. In addition, the rubber ring 23 also has the functions of shock absorption and maintaining the dynamic balance of the rotor 2.

[0056] Furthermore, in order to further improve the installation stability of rotor 2, after the first bearing 211 is inserted into the first fixing hole 111, glue can be applied to the connection between the two for fixation; when disassembling, a hot air blower is needed to dissolve the glue before disassembly.

[0057] See appendix Figure 4 -Appendix Figure 6 and attached Figure 9 The rotor 2 also includes a steel sleeve 24, which coaxially wraps the outer circumference of the magnet 22. The design of the steel sleeve 24 can protect the magnet 22 and reduce the possibility of damage to the magnet 22 during installation and use.

[0058] See appendix Figure 4 -Appendix Figure 6 and attached Figure 9 The rotor 2 also includes two collars 25, which are coaxially fitted onto the fixed shaft 21 and respectively abut against the two ends of the magnet 22.

[0059] Specifically, before installing the first bearing 211 and the second bearing 212, first install a collar 25 onto the shaft 21, then install the magnet 22 onto the shaft 21 with the collar 25 abutting against one end of the magnet 22. Next, install another collar 25 onto the shaft 21 with the other end of the magnet 22. Finally, install the first bearing 211 and the second bearing 212 onto the beginning and end of the shaft 21 respectively. The design of the two collars 25 can not only restrict and fix the magnet 22 onto the shaft 21, improving the installation stability of the magnet 22, but also help maintain the dynamic balance of the rotor 2.

[0060] It should be noted that there are various ways to fix the collar 25 and the shaft 21, and this utility model does not limit this. For ease of understanding, in this embodiment, the two collars 25 are fixed to the shaft 21 by press fitting with an interference fit. On the other hand, abutment blocks 213 for synchronously abutting the collar 25 and the second bearing 212 can also be designed on the shaft 21 to further improve the installation stability of the collar 25 and the second bearing 212.

[0061] See appendix Figure 1 -Appendix Figure 6 and attached Figure 10 -Appendix Figure 11 The side wall of the fixed frame 11 has a circumferential array of multiple cutouts 113 to expose the magnets 22 of the rotor 2; the insulating frame 31 has multiple blocks 311 inside, which block the multiple cutouts 113 one by one and form a cavity 310; the metal block 33 has multiple protrusions 331, which extend to the multiple blocks 311 to correspond to the magnets 22 synchronously; the cooperation of the cutouts 113 and the blocks 311 allows the multiple protrusions 331 on the metal block 33 to accurately correspond to the magnets 22, thereby ensuring that the stator 3 can stably drive the rotor 2 to rotate.

[0062] Furthermore, in this embodiment, there are three cutouts 113, and the stop block 311 and the protrusion 331 are all corresponding to the cutouts 113. This design allows the metal block 33 to act on the three sides of the circumference of the magnet 22 at the same time. Under this design, the stator 3 can continuously drive the rotor 2 to rotate stably and helps to reduce the vibration of the rotor 2.

[0063] See appendix Figure 4 -Appendix Figure 6Traditional motors have poor heat dissipation performance, and their compact structure makes it difficult for internal heat to dissipate. They are prone to overheating during long-term high-load operation, which affects their lifespan and performance. Moreover, under high-temperature environments, the magnet 22 may undergo irreversible demagnetization, resulting in a decrease in working efficiency. To solve this problem, in this utility model, there is a gap 1130 between the stop block 311 and the hollow opening 113. This design allows the heat generated by the magnet 22 and the protrusion 331 during the operation of the rotor 2 to escape to the outside through the gap 1130, thereby effectively reducing the internal temperature of the motor, preventing the magnet 22 from demagnetizing, ensuring the service life and performance of the motor, and improving working efficiency.

[0064] See appendix Figure 4 -Appendix Figure 8 The mounting bracket 11 has multiple heat dissipation ports 114 connected to the receiving cavity 10 on each side of the circumference of the first mounting hole 111. This design allows the heat generated by the rotor 2 and the stator 3 to enter the receiving cavity 10 through the heat dissipation ports 114. At the same time, the rotation of the fan blades 4 can also be used to dissipate the heat from the opening of the receiving cavity 10, giving full play to the role of the fan blades 4 and further improving the heat dissipation efficiency.

[0065] See appendix Figure 1 -Appendix Figure 9 The metal block 33 is made of silicon steel sheet, and the base 1 and the insulating frame 31 are both made of plastic. In addition to the above materials, other materials can also be used to make the metal block 33, the base 1 and the insulating frame 31. Since there are many types of related materials, this utility model does not limit them.

[0066] See appendix Figure 2 -Appendix Figure 6 and attached Figure 11 The insulating frame 31 has multiple locking positions 312 arranged in a circular array; the base 1 is provided with a limiting block 12 and multiple support arms 13 arranged in a circular array. The limiting block 12 and the multiple support arms 13 extend along the length direction of the fixing frame 11. The limiting block 12 is used to abut against and limit the insulating frame 31. The multiple support arms 13 can abut against the outer circumferential wall of the insulating frame 31 at the same time, and the ends of the support arms 13 away from the base 1 are provided with buckles 130 for the locking positions 312.

[0067] Specifically, during the assembly of the stator 3, the cavity 310 of the insulating frame 31 is aligned with the fixing frame 11, and then the insulating frame 31 is moved to accommodate the base 1. During this process, the insulating frame 31 compresses the multiple support arms 13, causing adaptive deformation. After the insulating frame 31 is fully inserted into the space enclosed by the multiple support arms 13, the limiting block 12 abuts against the insulating frame 31, so that the metal block 33 aligns with the magnet 22. At the same time, the multiple support arms 13 return to their original shape and simultaneously abut against the outer circumference of the insulating frame 31 to limit... The sleeve cavity 310 is coaxial with the rotor 2 and prevents the protrusion 331 from contacting the magnet 22. During the process of restoring the multiple support arms 13 to their original state, multiple buckles 130 can be driven to engage multiple slots 312 one by one to install the insulation frame 31 on the base 1. Similarly, when disassembling the stator 3, the multiple support arms 13 are simultaneously pried off the insulation block, and the connection between the multiple buckles 130 and the multiple slots 312 is released. In addition, the stator 3 can be removed by moving the insulation block away from the base 1.

[0068] In summary, using this mounting structure to assemble and disassemble the insulation frame 31 and the base 1 allows the motor to be completely free of screws, springs and other fasteners, making the motor easier to assemble and reducing assembly errors, and also further achieving the weight reduction of the motor.

[0069] It should be noted that, in addition to the above-mentioned installation structure, the insulating frame 31 and the base 1 can also be bonded with glue, fixed with screws, or directly welded with welding rods. The specific installation method is quite flexible, so this utility model does not impose any restrictions on it.

[0070] See appendix Figure 1 -Appendix Figure 6 and attached Figure 10 The insulating frame 31 is provided with a limiting groove 313. When the insulating frame 31 is installed on the base 1, the limiting block 12 is inserted into the limiting groove 313. The cooperation between the limiting block 12 and the limiting groove 313 can not only limit the rotation of the insulating frame 31 and improve the installation stability of the insulating frame 31, but also help the buckle 130 to align with the buckle insertion position 312 due to the convenience of observation.

[0071] Furthermore, in order to improve the installation stability of the insulating frame 31, after the limiting block 12 is inserted into the limiting groove 313, glue is applied to the insertion point of the limiting block 12 and the limiting groove 313 for fixation; when disassembling the stator 3, a hot air blower is needed to dissolve the glue before disassembly.

[0072] See appendix Figure 1 -Appendix Figure 6 It also includes a cover 5, which is mounted on the base 1 and covers the opening of the receiving cavity 10. The cover 5 is provided with a circular through groove 51 that connects the receiving cavity 10 and the outside. Multiple guide vanes 510 are arranged in a circular array inside the circular through groove 51.

[0073] Specifically, the design of the casing 5 protects the fan blades 4 from damage; while the design of multiple guide vanes 510 can reduce the flow obstruction rate, stabilize the intake power, effectively reduce power consumption, further improve the stability of the motor, and extend the service life of the motor.

[0074] Furthermore, there are various ways to fix the cover 5 and the base 1, and this utility model does not limit this. For ease of understanding, in this embodiment, the cover 5 is glued to the base 1. When disassembling the cover 5, a hot air blower is needed to dissolve the glue before disassembly.

[0075] To facilitate the assembly of finished motors by staff, this embodiment illustrates the assembly method of the above motors, specifically including the following steps:

[0076] Step S1: Perform concentricity testing on the first fixing holes 111 and the second fixing holes 112 of several bases 1, and determine whether the bases 1 are qualified based on the concentricity test results; perform dynamic balance testing on several rotors 2 and several fan blades 4, select the corresponding fan blades 4 of each rotor 2 to combine them, and perform dynamic balance testing on the combination, and determine whether the combination is qualified based on the dynamic balance test results.

[0077] Step S2: Select a qualified rotor 2 and place it at the opening of the receiving cavity 10 of the qualified base 1. Then, use a jig to press the rotor 2 into the fixing frame 11 through the receiving cavity 10 so that the second bearing 212 and the first bearing 211 are pressed into the second fixing hole 112 and the first fixing hole 111 respectively, ensuring the coaxiality of the shaft 21 with the first bearing 211 and the second bearing 212.

[0078] Step S3: Press the qualified fan blade 4 onto the head end of the shaft 21, and place the fan blade 4 into the receiving cavity 10.

[0079] In step S4, the stator 3 is manually or using a fixture to install it onto the base 1 so that the bushings coaxially surround the rotor 2, thereby assembling the finished motor.

[0080] Furthermore, in step S2, the first bearing 211 and the second bearing 212 are press-fitted to the first fixing hole 111 and the second fixing hole 112 respectively, and glue is applied to the connection between the first bearing 211 and the first fixing hole 111 for fixation; in step S3, the fan blade 4 is press-fitted to the shaft 21 for interference fit; in step S4, if the base 1 is provided with a limiting block 12, a limiting groove 313 is formed on the insulating frame 31, and after the limiting block 12 is inserted into the limiting groove 313, glue is applied to the insertion point of the two for fixation.

[0081] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision motor that is easy to assemble and disassemble, comprising fan blades, characterized in that, Also includes: The base has an outwardly opening receiving cavity at one end and a fixing frame at the other end, with a first fixing hole and a second fixing hole coaxially arranged on the fixing frame. The rotor includes a shaft, a magnet sleeved and fixed in the middle of the shaft, and a first bearing and a second bearing sleeved and fixed at both ends of the shaft. The rotor can pass through the receiving cavity into the fixing frame, and the first bearing and the second bearing are synchronously installed into the first fixing hole and the second fixing hole, respectively. The first end of the shaft protrudes into the receiving cavity through the first bearing and is inserted and fixed to the fan blade. The stator includes an insulating frame, pins, and a metal block. The pins and the metal block are both mounted on the insulating frame. The insulating frame is detachably mounted on the base. The insulating frame has a coaxial cavity that can movably accommodate the rotor. The metal block extends into the cavity to correspond to the magnet.

2. The high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The inner diameter of the first fixing hole is larger than the inner diameter of the second fixing hole, and the outer diameter of the first bearing is larger than the outer diameter of the second bearing, so as to fit the first fixing hole and the second fixing hole respectively.

3. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The rotor also includes a rubber ring, which is coaxially mounted on the first bearing and abuts against the inner wall of the first fixing hole.

4. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The rotor also includes two collars, which are coaxially fitted onto the shaft and respectively abut against the two ends of the magnet.

5. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The side wall of the fixing frame has a circumferential array of multiple cutouts to expose the magnets of the rotor; the interior of the insulating frame has multiple blocks, which block the multiple cutouts one by one to form the cavity; the metal block has multiple protrusions, which extend to the multiple blocks one by one to correspond to the magnets synchronously.

6. A high-precision motor that is easy to assemble and disassemble according to claim 5, characterized in that, There is a gap between the block and the cutout to allow heat to escape.

7. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The mounting bracket has multiple heat dissipation vents on each side of the circumference of the first mounting hole, which connect to the receiving cavity.

8. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The insulating frame has multiple locking positions arranged in a circular array; the base is provided with a limiting block and multiple supporting arms arranged in a circular array. The limiting block and the multiple supporting arms extend along the length direction of the fixing frame, and each of the multiple supporting arms has a buckle at its end away from the base. The multiple supporting arms can simultaneously abut against the outer circumferential wall of the insulating frame so that the rotor is coaxially fitted into the cavity. The limiting block can abut against the insulating frame so that the metal block is aligned with the magnet. The multiple buckles can engage with the multiple locking positions one by one to install the insulating frame onto the base.

9. A high-precision motor that is easy to assemble and disassemble according to claim 8, characterized in that, The insulating frame is provided with a limiting groove. When the insulating frame is installed on the base, the limiting block is inserted into the limiting groove.

10. A high-precision motor that is easy to assemble and disassemble according to any one of claims 1-9, characterized in that, It also includes a cover, which is mounted on the base and covers the opening of the receiving cavity. The cover is provided with a circular through groove that connects the receiving cavity to the outside. Multiple guide vanes are arranged in a circular array inside the circular through groove.

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