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

Inactive Publication Date: 2015-03-11
WHIRLPOOL CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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; When it is taken out, it will be cooled and deformed, which will crack the magnetic steel

Method used

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  • Magnetic steel fixing structure of permanent magnet motor
  • Magnetic steel fixing structure of permanent magnet motor
  • Magnetic steel fixing structure of permanent magnet motor

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing:

[0013] like figure 1 , figure 2 The magnet fixing structure of a permanent magnet motor shown includes a rotor core 1 and a plurality of magnets 2 evenly spaced along the inner circle of the rotor core 1. The circle is tightly fit, and there is an injection molded part 3 between the rotor iron core 1 and the magnetic steel 2, which is filled with both and integrally injection-molded. The magnetic steel groove 4, the magnetic steel groove 4 wraps and positions the magnetic steel 2. The rotor core is generally made of silicon steel sheets by stamping. The rotor core is a magnetically conductive material that provides a conductive magnetic circuit for the magnet steel and provides structural support for the magnet steel. The outer circle of the magnet steel is tightly connected to the inner circle of the rotor core. Fitting, so that the magnetic steel can be locked in the ...

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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.

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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Application Information

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IPC IPC(8): H02K1/28
CPCH02K1/27
Inventor 许平建丁洪涛
Owner WHIRLPOOL CHINA
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