Magnetic steel fixing structure of permanent magnet motor

A fixed structure, permanent magnet motor technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve the problems of unsightly appearance, poor consistency, cracking of magnetic steel, etc., to avoid cracking, Less usage, better appearance consistency
CN104410189AInactive Publication Date: 2015-03-11WHIRLPOOL CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WHIRLPOOL CHINA
Publication Date
2015-03-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a magnetic steel fixing structure of a permanent magnet motor. The magnetic steel fixing structure of the permanent magnet motor comprises rotor cores and a plurality of magnetic steels uniformly arranged along inner circles of the rotor cores at intervals, excircles of the magnetic steels are tightly adhered to the inner circles of the rotor cores, injection molding units filling and integrally injection molding the rotor cores and the magnetic steels are arranged between the rotor cores and the magnetic steels, the position where the injection molding units is matched with the magnetic steels is provided with magnetic steel grooves for accommodating the magnetic steels, and the magnetic steel grooves wrap up and locate the magnetic steels. By means of the above technical scheme, the magnetic steel fixing structure of the permanent magnet motor is small in package material portions of the magnetic steel through the fixing structure of the magnetic steel slots to the magnetic steels, avoids drawing breakage caused when the magnetic steels are wrapped by a large area of materials but the materials shrink, and reduces material use and uniform in appearance.
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Description

technical field

[0001] The invention relates to a permanent magnet motor, in particular to a magnetic steel fixing structure of the permanent magnet motor. Background technique

[0002] At present, permanent magnet motor rotors used for washing machines or other purposes are generally made of permanent magnets, rotor cores, mounting plates, transmission splines, etc., by integral injection molding with fillers such as PBT and BMC, to make motor rotors. This fixed structure involves the fixing of the magnetic steel on the motor rotor. The traditional method is to directly wrap the magnetic steel with fillers such as PBT and BMC for injection molding. This type of fixed structure is simple in design, but due to the magnetic steel and rotor iron The cores all have theoretical deviations. Some of the products produced have a lot of material in the magnetic steel, and some of the magnetic steel is partially exposed. The consistency is poor and the appearance is not beautiful; Wh...

Claims

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