Rotor and motor

Abstract

The invention provides a rotor and a motor, the rotor comprises a plurality of segments of iron cores, a rotating shaft and a plurality of self-locking assemblies, the iron cores are provided with via holes, and the hole walls of the via holes are provided with mounting grooves; the rotating shaft penetrates through the via hole and is in sliding connection with the iron core, a mounting cavity is formed in the rotating shaft, and a plurality of obliquely-arranged through holes are formed in the rotating shaft in the length direction at intervals and penetrate through the mounting cavity and the outside; the self-locking assembly can do telescopic motion in the mounting cavity, and one end of the self-locking assembly penetrates through the through hole to be connected with the mounting groove in a clamped mode. According to the invention, the iron cores are provided with the mounting grooves, the rotating shaft is provided with the mounting cavity and the plurality of obliquely arranged through holes, the mounting cavity is internally provided with the plurality of self-locking assemblies capable of doing telescopic motion, and one ends of the self-locking assemblies penetrate through the through holes to be clamped with the mounting grooves, so that the iron cores and the rotating shaft are fixed, and the magnetic poles of the plurality of iron cores are obliquely arranged; finally, a sectional skewed pole structure of the rotor is realized, so that the operation stability of the motor is improved, and the assembly efficiency and the part universality of the rotor are improved.

Description

Technical Field

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

[0002] As an important representative of modern motor technology, permanent magnet synchronous motor has broad application prospects in electric vehicles, industrial drives, wind power generation, etc. Its advantages such as high efficiency, high power density and response speed have enabled researchers and engineers to continuously explore new designs and optimization solutions to improve motor performance and efficiency.

[0003] The rotor design has a profound impact on the performance of permanent magnet synchronous motors, especially the optimization of the rotor magnetic field distribution can significantly affect the power density and stability of the motor. Traditional permanent magnet synchronous motor rotors often use an integral structure of magnetic poles, whose magnetic field distribution is fixed and difficult to adjust, limiting the performance of the motor under different working conditions. As an innovative design solution, segmented skewed pole technology divides the rotor poles into several independent parts and sets skew magnetization for each part, aiming to optimize the magnetic field distribution of the motor and reduce the adverse effects during the operation of the motor. Each pole segment can independently control its magnetization direction and strength, making the overall magnetic field distribution more uniform, improving the motor cogging torque and torque pulsation, and improving the efficiency and stability of the motor.

[0004] In the prior art, the implementation method of segmented rotor skew poles is mainly achieved by using asymmetric keyways and rotor stacks on the front and back sides. There are front and back stacking operations, and fasteners such as screws and rivets are required for fixing. The process is complicated and the assembly efficiency is low, which affects the efficiency of industrialization. Summary of the invention

[0005] The embodiments of the present invention provide a rotor and a motor to solve the problems of difficult machining and assembly of conventional rotor skew poles, difficult disassembly of parts, and inability to be universally used.

[0006] The present invention provides a rotor, comprising:

[0007] A multi-section iron core, wherein the iron core is provided with a through hole, and the hole wall of the through hole is provided with a mounting groove;

[0008] A rotating shaft, the rotating shaft passes through the through hole and is slidably connected to the iron core, a mounting cavity is provided inside the rotating shaft, a plurality of obliquely arranged through holes are provided at intervals along the length direction of the rotating shaft, and the through holes penetrate the mounting cavity and the outside;

[0009] A plurality of self-locking components are provided, wherein the self-locking components can perform telescopic movement in the installation cavity, and one end of the self-locking component passes through the through hole to be engaged with the installation groove.

[0010] In the rotor provided by the present invention, the self-locking assembly includes a spring sheet, an elastic member and a gasket, the two ends of the elastic member are respectively connected to the spring sheet and the gasket, the gasket abuts against the bottom wall of the mounting cavity, and one end of the spring sheet passes through the through hole to abut against the mounting groove.

[0011] In the rotor provided by the present invention, the spring sheet includes a supporting portion and a clamping portion, the supporting portion is located on the side of the through hole facing the mounting cavity, the clamping portion is extended upward from the top end of the supporting portion, and one end of the clamping portion passes through the through hole to clamp with the mounting groove.

[0012] In the rotor provided by the present invention, the upper end surface of the clamping portion is an inclined surface; and / or the side surface of the clamping portion abutting against the mounting groove is a plane.

[0013] In the rotor provided by the present invention, the angle α between the upper end surface and the axis of the rotating shaft is ≤45°.

[0014] In the rotor provided by the present invention, the number of the iron cores is N, and the staggered angle between two adjacent iron cores is θ, which must satisfy N*θ≦25°.

[0015] In the rotor provided by the present invention, the spring sheet also includes a first fixing portion extending downward from the bottom end of the supporting portion, the gasket includes an abutting portion and a second fixing portion extending upward from the top end of the abutting portion, the abutting portion abuts against the bottom wall of the mounting cavity, and the second fixing portion and the first fixing portion are respectively fixedly connected to the two ends of the elastic member.

[0016] In the rotor provided by the present invention, the top surface of the support portion is a circumferential surface; and / or the bottom surface of the gasket is a circumferential surface.

[0017] In the rotor provided by the present invention, the rotating shaft is further provided with a step, the step protrudes outward from the outer surface of the rotating shaft and is located on one side of the plurality of through holes.

[0018] The present invention also provides a motor, comprising:

[0019] A rotor, wherein the rotor is any one of the rotors described above.

[0020] The present application arranges the mounting groove on the through-hole wall of the iron core, and arranges the mounting cavity and a through hole that passes through the mounting cavity and the mounting groove on the rotating shaft, a plurality of the through holes are arranged obliquely, and a plurality of the self-locking components are arranged in the mounting cavity, the self-locking component can perform telescopic movement in the mounting cavity, and one end of the self-locking component can pass through the through hole and protrude outward from the outer surface of the rotating shaft, when the iron core slides until the self-locking component is engaged with the mounting groove, the iron core is fixed on the rotating shaft, and since the plurality of through holes are arranged obliquely, the magnetic poles of the plurality of iron cores are arranged obliquely, and finally a segmented inclined pole structure of the rotor is realized, thereby weakening the motor tooth slot torque, improving the running stability of the motor, improving the control accuracy, reducing electromagnetic vibration and noise, and at the same time improving the assembly efficiency and parts versatility of the rotor inclined pole, thereby solving the problems of difficult processing and assembly of traditional rotor inclined poles, difficult part disassembly, and non-commonality, and fewer assembly parts, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1a-Figure 1c A structural diagram of the steps for assembling a rotor in an embodiment of the present invention;

[0023] Figure 2 A cross-sectional view of an embodiment of the present invention when a rotor is assembled;

[0024] Figure 3 is a cross-sectional view of a rotor in an embodiment of the present invention;

[0025] Figure 4a-4b Two side views of the rotor in the embodiment of the present invention;

[0026] Figure 5a-5c It is a structural diagram of each direction of the self-locking component in the embodiment of the present invention;

[0027] Figure 6a-6d It is a structural diagram of the spring pieces in various directions in the embodiment of the present invention;

[0028] Figure 7a-7c It is a structural diagram of the iron core in various directions in an embodiment of the present invention;

[0029] Figure 8a-8c It is a structural diagram of each direction of the rotating shaft in an embodiment of the present invention;

[0030] The reference numerals in the figures are:

[0031] 1. rotor; 10. iron core; 11. through hole; 111. mounting groove; 20. rotating shaft; 21. mounting cavity; 22. through hole; 23. step; 30. self-locking assembly; 31. spring piece; 311. supporting part; 312. clamping part; 313. first fixing part; 32. elastic member; 33. gasket; 331. abutting part; 332. second fixing part. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0033] Reference Figures 1a to 8c As shown, it shows an embodiment of the rotor 1 and the motor of the present invention. The rotor 1 includes a multi-section iron core 10, a rotating shaft 20 and a plurality of self-locking components 30. The iron core 10 is provided with a through hole 11, and the hole wall of the through hole 11 is provided with a mounting groove 111; the rotating shaft 20 passes through the through hole 11 and is slidably connected with the iron core 10, and a mounting cavity 21 is provided inside the rotating shaft 20. The rotating shaft 20 is provided with a plurality of obliquely arranged through holes 22 spaced apart along its length direction, and the through holes 22 penetrate the mounting cavity 21 and the outside; the self-locking component 30 can perform telescopic movement in the mounting cavity 21, and one end of the self-locking component 30 passes through the through hole 22 to be engaged with the mounting groove 111.

[0034] Specifically, the rotor 1 is one of the important structural parts of the motor. In order to easily adjust the magnetic field distribution of the rotor 1, the magnetic poles of the rotor 1 are set to be segmented oblique poles at this stage. The rotor 1 of the present application refers to a segmented oblique pole rotor 1, and the rotor 1 includes a multi-segment iron core 10, a rotating shaft 20 and a self-locking component 30. The multi-segment iron core 10 is fixed on the rotating shaft 20, and the multiple iron cores 10 are closely arranged along the length direction of the rotating shaft 20. The iron core 10 is provided with magnetic poles and multiple magnetic steel slots for assembling permanent magnets. The iron core 10 is also provided with a through hole 11, and the through hole 11 passes through both sides of the iron core 10, so that the rotating shaft 20 can pass through it, so that the The iron core 10 can be connected to the rotating shaft 20; a mounting groove 111 is provided on the hole wall of the through hole 11, and the mounting groove 111 is formed by the hole wall of the through hole 11 being recessed inwardly, and the mounting groove 111 is used to be fixed with the self-locking component 30, so that the iron core 10 can be fixed on the rotating shaft 20; the rotating shaft 20 passes through the through hole 11 and is slidably connected to the iron core 10, and the rotating shaft 20 is a hollow structure, that is, a mounting cavity 21 is provided inside the rotating shaft 20, and the mounting cavity 21 Used to install the self-locking component 30; and the rotating shaft 20 is provided with a plurality of through holes 22, the plurality of through holes 22 are arranged at intervals along the length direction of the rotating shaft 20, and the plurality of through holes 22 are arranged obliquely, the through holes 22 pass through the installation cavity 21 and the outside, that is, the through holes 22 pass through the installation cavity 21 and the installation groove 111, so that the self-locking component 30 can pass through the through holes 22 to connect with the installation groove 111; the self-locking component 30 is assembled into the installation cavity 21, and the self-locking component 30 is elastically connected with the rotating shaft 20 in the installation cavity 21, that is, the self-locking component 30 can move up and down in the installation cavity 21, and the self-locking component 30 has a plurality of self-locking components 30, and the plurality of self-locking components 30 correspond to the plurality of through holes 22 one by one, and one end of the self-locking component 30 passes through the through hole 22 and protrudes outward from the outer surface of the rotating shaft 20, so as to be engaged with the installation groove 111, thereby fixing the iron core 10 on the rotating shaft 20.

[0035] When assembling the iron core 10 to the rotating shaft 20, the iron core 10 slides from one side of the rotating shaft 20 toward the rotating shaft 20, and the hole wall of the through hole 11 of the iron core 10 abuts against the rotating shaft 20. When the iron core 10 slides to the protruding end of the self-locking component 30, the hole wall presses the self-locking component 30, so that the iron core 10 continues to slide until the protruding part of the self-locking component 30 is aligned with the installation groove 111 on the iron core 10. At this time, the installation groove 111 is engaged with the self-locking component 30, so that the iron core 10 is fixed in the rotating shaft 20. The multi-segment iron core 10 is fixed on the rotating shaft 20, and since the multiple through holes 22 are arranged obliquely, the positions where the multiple iron cores 10 and the multiple self-locking components 30 are engaged are an inclined structure as a whole, so that the magnetic poles of the multiple iron cores 10 are arranged obliquely, thereby realizing the segmented oblique pole structure of the rotor 1; when the iron core 10 does not abut the spring piece 31, the elastic member 32 is not subjected to the force, and the elastic member 32 stretches upward. At this time, the spring piece 31 is elastically acted upon by the elastic member 32, and then performs an upward stretching movement.

[0036] The present application provides the installation groove 111 on the hole wall of the through hole 11 of the iron core 10, and provides the installation cavity 21 and the through hole 22 that penetrates the installation cavity 21 and the installation groove 111 on the rotating shaft 20, a plurality of the through holes 22 are arranged obliquely, and a plurality of the self-locking components 30 are provided in the installation cavity 21, the self-locking components 30 can perform telescopic movement in the installation cavity 21, and one end of the self-locking component 30 can pass through the through hole 22 and protrude from the outer surface of the rotating shaft 20, when the iron core 10 slides to the point where the self-locking component 30 and the rotating shaft 20 are in contact, the self-locking components 30 can be moved in a telescopic manner, and ... When the mounting groove 111 is engaged, the iron core 10 is fixed on the rotating shaft 20. Since the plurality of through holes 22 are arranged obliquely, the magnetic poles of the plurality of iron cores 10 are arranged obliquely, and finally a segmented oblique pole structure of the rotor 1 is realized, thereby weakening the motor tooth slot torque, improving the running stability of the motor, improving the control accuracy, reducing electromagnetic vibration and noise, and improving the assembly efficiency and parts versatility of the rotor 1 oblique pole, thereby solving the problems of difficult machining and assembly of the conventional rotor 1 oblique pole, difficult parts disassembly, and non-commonality, and fewer assembly parts, thereby reducing production costs.

[0037] At the same time, the iron core 10 of each section of the segmented skew-pole rotor 1 of the present application is the same, and only one punching sheet needs to be processed, which reduces the difficulty of designing the mold of the iron core 10 and reduces the investment in multiple sets of molds.

[0038] In one embodiment, referring to Figure 5a to Figure 5cAs shown, the self-locking component 30 includes a spring piece 31, an elastic member 32 and a gasket 33, the two ends of the elastic member 32 are respectively connected to the spring piece 31 and the gasket 33, the gasket 33 abuts against the bottom wall of the mounting cavity 21, and one end of the spring piece 31 passes through the through hole 22 to abut against the mounting groove 111. Specifically, the self-locking component 30 is installed in the mounting cavity 21, and one end of the self-locking component 30 passes through the through hole 22 and protrudes outward from the outer side of the rotating shaft 20, the self-locking component 30 includes a spring piece 31, an elastic member 32 and a gasket 33, wherein the spring piece 31 is used to be clamped with the mounting groove 111; the elastic member 32 has compression and extension functions to drive the spring piece 31 to perform compression and extension movements; the gasket 33 is used to support the elastic member 32 and the gasket 33 to ensure the normal movement of the spring piece 31; the spring piece 31 The two ends of the elastic member 32 are respectively fixedly connected to the spring sheet 31 and the gasket 33, the gasket 33 is located at the bottom of the installation cavity 21, and the gasket 33 abuts against the bottom wall of the installation cavity 21, the spring sheet 31 is located at the top of the installation cavity 21, one end of the spring sheet 31 passes through the through hole 22 and protrudes outward from the outer surface of the rotating shaft 20 to be engaged with the installation groove 111, the gasket 33, the elastic member 32 and the spring sheet 31 are stably fixed in the installation cavity 21, and the spring sheet 31 can perform telescopic movement under the action of force.

[0039] When the core 10 slides on the shaft 20, the hole wall of the core 10 presses the spring sheet 31 to compress the elastic member 32 downward, so that the spring sheet 31 moves toward the gasket 33, so that one end of the spring sheet 31 is compressed into the inside of the shaft 20 to avoid the core 10, so that the core 10 continues to slide. When the core 10 does not abut the spring sheet 31, the elastic member 32 does not receive the force, and the elastic member 32 stretches upward. At this time, the spring sheet 31 is elastically acted upon by the elastic member 32 and then stretches upward. The core 10 slides to the installation groove 111 of the core 10 and engages with the spring sheet 31 of one of the self-locking components 30. At this time, the self-locking component 30 fixes the core 10, and finally realizes the fixed connection between the core 10 and the shaft 20. The self-locking component 30 in this embodiment has a simple structure, is easy to produce, and has high structural stability.

[0040] In a specific embodiment, refer to Figures 5a to 6dAs shown, the spring piece 31 includes a supporting portion 311 and a clamping portion 312, the supporting portion 311 is located on the side of the through hole 22 facing the mounting cavity 21, the clamping portion 312 is extended upward from the top of the supporting portion 311, and one end of the clamping portion 312 passes through the through hole 22 to clamp with the mounting groove 111. Specifically, one end of the spring piece 31 is used to be clamped with the mounting groove 111, and the spring piece 31 includes a supporting portion 311 and a clamping portion 312, and the supporting portion 311 and the clamping portion 312 are fixedly connected, and the supporting portion 311 is located on the side of the through hole 22 facing the mounting cavity 21. It can be seen that the size of the supporting portion 311 is larger than the size of the through hole 22, and the size includes length and width, so that the supporting portion 311 clamps the spring piece 31 in the mounting cavity 21 to prevent the spring piece 31 from escaping from the mounting cavity 21; the clamping portion 312 is extended upward from the top of the supporting portion 311, and one end of the clamping portion 312 away from the supporting portion 311 passes through the through hole 22 and protrudes out of the outer surface of the rotating shaft 20, that is, the size of the clamping portion 312 is less than or equal to the size of the through hole 22, and the size includes When the clamping portion 312 is compressed by the iron core 10, the clamping portion 312 moves toward the bottom end of the mounting cavity 21, thereby avoiding the iron core 10 and allowing the iron core 10 to continue to slide; when the clamping portion 312 is not subjected to the force, the spring sheet 31 is elastically acted upon by the elastic member 32, the spring sheet 31 extends upward, the clamping portion 312 moves upward and one end of the clamping portion 312 passes through the through hole 22, at which time the top end of the support portion 311 abuts against the top end of the mounting cavity 21, thereby preventing the clamping portion 312 from continuing to extend upward and preventing the spring sheet 31 from detaching from the mounting cavity 21, so as to improve the structural stability of the spring sheet 31 and limit the moving distance of the spring sheet 31, until the clamping portion 312 abuts against the mounting groove 111, thereby fixing the iron core 10 on the rotating shaft 20.

[0041] In one embodiment, referring to Figures 5a to 6dAs shown, the upper end surface of the clamping portion 312 is an inclined surface; and / or the side surface of the clamping portion 312 abutting against the mounting groove 111 is a plane. Specifically, the upper end surface of the clamping portion 312 is set as an inclined surface, and the inclined direction of the inclined surface is opposite to the sliding direction of the iron core 10, and the iron core 10 slides from one side of the rotating shaft 20 to the other side of the rotating shaft 20, that is, the inclined surface is set to be inclined downward from the side of the clamping portion 312 away from the rotating shaft 20 to the side close to the rotating shaft 20, so that when the iron core 10 slides from one side of the rotating shaft 20 to the other side of the rotating shaft 20 to abut against the clamping portion 312, the inclined surface has a guiding effect, making it easier for the iron core 10 to slide toward the other side of the rotating shaft 20, and making the clamping portion 312 easier to be pressed by the iron core 10 into the mounting cavity 21 and the through hole 22, thereby improving assembly efficiency.

[0042] At the same time, the side of the clamping portion 312 is a plane, that is, the four sides of the clamping portion 312, front, back, left, and right, are all set to be planes, especially when the clamping portion 312 is clamped with the mounting groove 111, the side of the clamping portion 312 abutting against the mounting groove 111 is a plane, so that the clamping portion 312 and the mounting groove 111 are easily abutted, so that the clamping portion 312 can limit the axial and circumferential positions of the iron core 10 to prevent the iron core 10 from moving, so that the iron core 10 is fixed to the rotating shaft 20. The structure of the clamping portion 312 is simple, and the stability of the fixing of the iron core 10 to the rotating shaft 20 is improved.

[0043] More specifically, the clamping portion 312 is configured as a triangular structure or a trapezoidal structure, thereby ensuring that the iron core 10 and the rotating shaft 20 are easier to assemble and improving assembly efficiency.

[0044] In a specific embodiment, the angle α between the inclined surface and the axis of the rotating shaft 20 is ≤45°. Specifically, the axis of the rotating shaft 20 refers to the axis parallel to the length direction of the rotating shaft 20, and the angle between the inclined surface and the axis is less than or equal to 45°, so that the clamping part 312 can fix the iron core 10, and at the same time, the clamping part 312 can be easily pressed down by the iron core 10, wherein the optimal value of the angle is 30°. When the angle between the inclined surface and the axis of the rotating shaft 20 is 30°, the iron core 10 is slid at this time, and the iron core 10 is most likely to press down the clamping part 312, thereby improving the assembly efficiency of the rotor 1.

[0045] In one embodiment, the number of the iron cores 10 is N, and the staggered angle between two adjacent iron cores 10 is θ, which needs to satisfy N*θ≦25°. Specifically, the rotor 1 includes a plurality of sections of iron cores 10, and the plurality of sections of iron cores 10 are fixed on the rotating shaft 20 in sequence. The number of the iron cores 10 is N. Since the plurality of through holes 22 are arranged obliquely, the magnetic poles of the plurality of sections of iron cores 10 are also arranged obliquely, that is, the two adjacent iron cores 10 are staggered, and the staggered angle between the two adjacent iron cores 10 is θ, wherein the staggered angle θ refers to the staggered angle between two adjacent through holes 22 on the circumferential surface of the rotating shaft 20. The relationship between the number of the iron cores 10 N and the staggered angle θ needs to satisfy N*θ≦25°, thereby weakening the motor cogging torque while taking into account other performances of the motor equipped with the rotor 1, and enabling the plurality of sections of iron cores 10 to be arranged on the rotating shaft 20 at corresponding angles, thereby improving the structural stability of the rotor 1.

[0046] In a specific embodiment, refer to Figures 5a to 6d As shown, the spring piece 31 also includes a first fixing portion 313 extending downward from the bottom end of the supporting portion 311, and the gasket 33 includes an abutting portion 331 and a second fixing portion 332 extending upward from the top end of the abutting portion 331, the abutting portion 331 abuts against the bottom wall of the mounting cavity 21, and the second fixing portion 332 and the first fixing portion 313 are fixedly connected to the two ends of the elastic member 32 respectively. Specifically, in addition to the supporting portion 311 and the clamping portion 312, the spring piece 31 also includes a first fixing portion 313, and the first fixing portion 313 is extended downward from the bottom end of the supporting portion 311; the gasket 33 is located below the spring piece 31, and the gasket 33 includes an abutting portion 331 and a second fixing portion 332, the abutting portion 331 is fixedly connected to the second fixing portion 332, and the second fixing portion 332 is extended upward from the top end of the abutting portion 331, the first fixing portion 313 and the second fixing portion 332 are arranged facing each other, and the first fixing portion 313 and the The second fixing portion 332 is fixedly connected to the two ends of the elastic member 32 respectively. The first fixing portion 313 and the second fixing portion 332 fix the elastic member 32 so that the elastic member 32 can perform telescopic movement between the gasket 33 and the spring 31. The gasket 33 supports the elastic member 32. The elastic member 32 drives the spring 31 to perform telescopic movement. The structure of the self-locking component 30 is simple, and the fixation of the elastic member 32 to the first fixing portion 313 and the second fixing portion 332 is more stably, thereby improving the structural stability of the self-locking component 30.

[0047] More specifically, the first fixing portion 313 and the second fixing portion 332 are cylindrical structures, the elastic member 32 is a spring, and the two ends of the spring are respectively sleeved on the outside of the first fixing portion 313 and the second fixing portion 332 to achieve stable fixation of the spring, the spring sheet 31 and the gasket 33.

[0048] In one embodiment, referring to Figures 5a to 6d As shown, the top surface of the support portion 311 is a circumferential surface; and / or, the bottom surface of the gasket 33 is a circumferential surface. Specifically, since the top of the support portion 311 abuts against the top of the installation cavity 21 to prevent the self-locking component 30 from being separated from the rotating shaft 20, the rotating shaft 20 is a cylindrical structure with a hollow middle portion. In order to make the elastic sheet 31 and the gasket 33 fit the installation cavity 21 more closely, the top surface of the support portion 311 is set as a circumferential surface, and / or, the bottom surface of the gasket 33 is set as a circumferential surface, so that the support portion 311 and the gasket 33 can fit closely with the top and bottom ends of the installation cavity 21, so that the self-locking component 30 can perform telescopic movement in the installation cavity 21 more stably.

[0049] In a specific embodiment, refer to Figures 1a to 4a , Figures 8a to 8cAs shown, the rotating shaft 20 is further provided with a step 23, and the step 23 protrudes from the outer surface of the rotating shaft 20 and is located on one side of the multiple through holes 22. Specifically, the multiple sections of the iron core 10 are closely arranged on the rotating shaft 20, and the iron cores 10 are all fixed by the self-locking assembly 30. In order to ensure the stability of the fixation of the iron core 10, the rotating shaft 20 is further provided with a step 23, and the step 23 protrudes from the outer surface of the rotating shaft 20 and is located on one side of the multiple through holes 22, that is, the step 23 is provided on one side of the through hole 22 at the edge, and the multiple through holes 22 are spaced and arranged obliquely along the length direction of the rotating shaft 20 by one side of the step 23, and the step 23 is located at the end of the multiple sections of the iron core 10 along the sliding direction of the rotating shaft 20, so that when the iron core 10 passes through the rotating shaft 20 and slides from one end of the rotating shaft 20 to the other end, the iron core 10 slides When it moves to the through hole 22 at the outermost edge and is fixedly connected with the self-locking component 30, the side of the iron core 10 away from the end of the rotating shaft 20 abuts against the step 23, and then the multiple iron cores 10 are assembled to the rotating shaft 20 in sequence, and the step 23 cooperates with the multiple self-locking components 30, so as to fix the iron core 10 axially, so as to achieve the axial and circumferential stable fixation of the iron core 10, improve the stability of the fixation of the iron core 10 and the rotating shaft 20, thereby improving the structural stability of the rotor 1, and at the same time, during assembly, screws, rivets and other fasteners are no longer needed to play a fixing role, thereby improving the assembly efficiency of the rotor 1, the parts have good versatility, and the number of assembly parts is small, thereby reducing the production cost.

[0050] For example, when assembling the multi-segment core 10 to the shaft 20, the core 10 moves to the left, the hole wall of the through hole 11 of the core 10 contacts the spring 31 on the shaft 20, so that the elastic member 32 inside the shaft 20 is compressed, and the spring 31 moves downward. When the protruding portion of the spring 31 is aligned with the mounting groove 111 on the core 10, the elastic member 32 restores its original length, the spring 31 cooperates with the mounting groove 111, and the core 10 is fixed. Fixed; wherein, when the first section of the iron core 10 is assembled, the circumferential rotation of the iron core 10 is limited by the clamping portion 312, the axial leftward movement of the iron core 10 is limited by the step 23, and the axial rightward movement is limited by the rear end face of the clamping portion 312, and the first section of the iron core 10 is fixed; repeat the above operation, assemble the various sections of the segmented oblique pole iron core 10, and the assembly of the segmented oblique pole rotor 1 is completed. At this time, the iron core 10 of each section has been arranged at a corresponding angle to achieve the oblique pole effect. At the same time, since the axial and circumferential directions of the iron core 10 are fixed, screws, rivets and other fasteners are no longer needed to fix it, thereby improving assembly efficiency and parts versatility.

[0051] This embodiment also provides a motor (not shown in the figure), which includes a rotor 1. The rotor 1 can adopt any rotor 1 provided by the present invention. Since the specific structure and working principle of the rotor 1 have been introduced in detail in the previous description, they will not be repeated here for the sake of brevity.

[0052] The motor in this embodiment adopts the rotor 1 provided by the present invention. The rotor 1 is a segmented oblique pole structure, which is simple to assemble and has high assembly efficiency, thereby making the motor have high assembly efficiency and high parts versatility. At the same time, it can weaken the motor cogging torque and improve the operating stability of the motor.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A rotor, characterized in that: include: A multi-section iron core, wherein the iron core is provided with a through hole, and the hole wall of the through hole is provided with a mounting groove; A rotating shaft, the rotating shaft passes through the through hole and is slidably connected to the iron core, a mounting cavity is provided inside the rotating shaft, a plurality of obliquely arranged through holes are provided at intervals along the length direction of the rotating shaft, and the through holes penetrate the mounting cavity and the outside; A plurality of self-locking components are provided, wherein the self-locking components can perform telescopic movement in the installation cavity, and one end of the self-locking component passes through the through hole to be engaged with the installation groove.

2. The rotor according to claim 1, characterized in that The self-locking assembly includes a spring sheet, an elastic member and a gasket, the two ends of the elastic member are respectively connected to the spring sheet and the gasket, the gasket abuts against the bottom wall of the installation cavity, and one end of the spring sheet passes through the through hole to abut against the installation groove.

3. The rotor according to claim 2, characterized in that The spring sheet includes a supporting portion and a clamping portion, wherein the supporting portion is located on a side of the through hole facing the mounting cavity, the clamping portion is extended upward from the top end of the supporting portion, and one end of the clamping portion passes through the through hole to be clamped with the mounting slot.

4. The rotor according to claim 3, characterized in that The upper end surface of the clamping portion is an inclined surface; and / or the side surface of the clamping portion abutting against the mounting groove is a flat surface.

5. The rotor according to claim 4, characterized in that The included angle α between the upper end surface and the axis of the rotating shaft is ≤45°.

6. The rotor according to any one of claims 1 to 5, characterized in that: The number of the iron cores is N, and the staggered angle between two adjacent iron cores is θ, which must satisfy N*θ≦25°.

7. The rotor according to claim 3, characterized in that The spring sheet also includes a first fixing portion extending downward from the bottom end of the supporting portion, the gasket includes an abutting portion and a second fixing portion extending upward from the top end of the abutting portion, the abutting portion abuts against the bottom wall of the mounting cavity, and the second fixing portion and the first fixing portion are fixedly connected to the two ends of the elastic member respectively.

8. The rotor according to claim 3, characterized in that The top surface of the support portion is a circumferential surface; and / or the bottom surface of the gasket is a circumferential surface.

9. The rotor according to claim 1, characterized in that The rotating shaft is further provided with a step, which protrudes outward from the outer surface of the rotating shaft and is located at one side of the plurality of through holes.

10. A motor, characterized in that: include: A rotor, wherein the rotor is the rotor according to any one of claims 1 to 9.

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