A rotor core structure of a permanent magnet motor
A technology of rotor iron core and permanent magnet motor, which is applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., and can solve the problem of difficult positioning of magnetic steel and magnetic steel spacers, expensive magnetic steel, waste of resources, etc. Problems, achieve simple and convenient positioning, simple processing, and reduce the effect of magnetic flux leakage between magnetic steels
Active Publication Date: 2017-01-04
NINGBO ANXIN CNC TECH
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Problems solved by technology
The rotor core with this structure has the following problems: 1) It is difficult to locate the magnetic steel and the magnetic steel spacer; 2) The magnetic steel and the magnetic steel spacer are usually pasted on the outer surface of the iron core with glue, which is difficult to process
The rotor core of this structure has the following problems: 1) There is serious flux leakage between the magnets, and the adjacent magnets are partially ineffective; 2) Since NdFeB magnets are usually used at present, this kind of magnets is expensive, Therefore, the invalidity of adjacent magnetic steel parts will cause serious waste of resources
Method used
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Embodiment Construction
[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0016] The rotor core structure of a kind of permanent magnet motor that the present invention proposes, such as Figure 3 to Figure 5 As shown, it includes a plurality of rotor punches 31, a plurality of magnets 32, and a magnet buckle 34 for fixing all the magnets. Part of the outer circular surface of the rotor punches 31 is evenly stamped with the same number of magnets. When all the rotor punches 31 are stacked together, the positioning spacers 33 in the axial direction are aligned. Each piece of magnetic steel 32 is inserted between two adjacent positioning spacers 33 in the circumferential direction. The magnetic steel buckle sleeve 34 sleeves are set outside all magnetic steel 32. That is, the rotor punch 31 of the rotor core is divided into two types of rotor punches with different structures, one is a rotor punch with positioning sp...
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The invention discloses a rotor core structure of a permanent magnet motor, which comprises a plurality of rotor punches, a plurality of magnetic steels and magnetic steel buckle sleeves, and the outer circular surface of part of the rotor punches is evenly and integrally stamped with magnetic steel, etc. When all the rotor punches are stacked together, the positioning spacers in the axial direction are aligned. Each piece of magnetic steel is inserted between two adjacent positioning spacers in the circumferential direction, and the magnetic steel buckle is sleeved on all magnetic steel. The advantage is that by stamping the positioning spacer on part of the rotor punch, not only the positioning of the magnetic steel is conveniently realized, but also the structure of the rotor core is simplified. The positioning spacer has little influence on the inductance of the motor; in addition, since the positioning spacer is integrally arranged on the rotor punch, the magnetic steel only needs to be inserted between two circumferentially adjacent positioning spacers to achieve a good performance. Positioning simplifies the processing process.
Description
technical field [0001] The invention relates to a motor, in particular to a rotor core structure of a permanent magnet motor. Background technique [0002] At present, the commonly used rotor cores of permanent magnet motors mainly have the following two structures. [0003] The rotor core of the first structure is as figure 1 As shown, it includes a cylindrical iron core 11, a magnetic steel 12, a magnetic steel spacer 13 and a magnetic steel buckle 14, and each piece of magnetic steel 12 is pasted on the outer surface of the iron core 11 along the axial direction of the iron core 11 The magnetic steel spacer 13 is located between two adjacent magnetic steels 12 and pasted on the outer circular surface of the iron core 11, the magnetic steel buckle 14 is sleeved on all the magnetic steel 12 and the magnetic steel spacer 13 by the magnetic Steel buckle cover 14 protection and fastening. The rotor core with this structure has the following problems: 1) It is difficult to l...
Claims
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IPC IPC(8): H02K1/27H02K1/28
Inventor 褚先章王必生陈平华林井福宋立斌张波李爽鲁刚刚
Owner NINGBO ANXIN CNC TECH