Surface-mounted rotor structure and motor
A rotor structure, surface mount technology, applied in the magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc., can solve the magnetic leakage phenomenon at the edge of the magnetic steel, reduce the motor back EMF constant and back EMF distortion rate and other problems , to reduce the distortion rate, strengthen the strength, and reduce the difficulty of assembly
Pending Publication Date: 2020-09-15
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0004] Surface-mounted motor rotor, the edge of the magnetic steel will produce serious magnetic flux leakage, thereby reducing the back EMF constant and back EMF distortion rate of the motor
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[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] combine Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a surface-mounted rotor structure, including: a rotor body 1; the outer peripheral wall of the rotor body 1 is provided with a plurality of evenly spaced main magnets 2, and the two peripheral edges of the main magnets 2 are Both are equipped with auxiliary magnets 3 ;...
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Abstract
The invention provides a surface-mounted rotor structure and a motor. The rotor structure comprises a rotor body, wherein the outer peripheral wall of the rotor body is provided with a plurality of pieces of main magnetic steel which are uniformly arranged at intervals, and two peripheral edges of the main magnetic steel are provided with auxiliary magnetic steel; the magnetizing directions of theauxiliary magnetic steel and the main magnetic steel are the same; and the adjacent pieces of auxiliary magnetic steel abut against each other along the circumferential direction of the rotor body. According to the surface-mounted rotor structure, two pieces of auxiliary magnetic steels are arranged on two sides of the main magnetic steel, the magnetic flux density of the edge of the main magnetic steel is increased, the back electromotive force distortion rate of a motor wire is reduced, the main magnetic steel is fixed at the same time, the current under the rated torque of the motor can beeffectively reduced, the heating and vibration of the motor are reduced, and the rotor magnetic steel is tightly attached, so that the overall magnetic steel strength is enhanced, the relative movement with the rotor is avoided, the positioning precision is improved, and the assembling difficulty of the rotor magnetic steel is reduced.
Description
technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a surface-mounted rotor structure and a motor. Background technique [0002] Compared with ordinary motors, permanent magnet synchronous motors have smaller speed fluctuations, higher motor power density, and higher efficiency. They are generally used in high-end precision fields such as machine tools and servo robots. [0003] Traditional permanent magnet motor rotors can be divided into three types: built-in type, surface type and claw pole type. Since the surface-mounted permanent magnet rotor has relatively small magnetic flux leakage between poles, its pole arc coefficient and cross-sectional shape can be determined according to the air gap flux. The spatial distribution of the density is required to be adjusted arbitrarily, and its manufacturing process is relatively simple, so the rotors of many permanent magnet motors often use surface-mounted magnetic steel st...
Claims
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IPC IPC(8): H02K1/27H02K1/28
CPCH02K1/278H02K1/28H02K2201/03H02K2213/03
Inventor 谢芳程宽宽刘伟健张智超卓明刘建国吴世历张育州
Owner GREE ELECTRIC APPLIANCES INC