Core lamination stack structure of electric machine rotor
A technology of iron core laminations and motor rotors, applied in the shape/style/structure of the magnetic circuit, rotating parts of the magnetic circuit, etc., can solve the adverse effects of the concentricity of the rotating shaft and the shaft hole, reduce the stability of the motor, and increase the motor Noise and other problems, to achieve the effect of uniform force, increased assembly size, and stable operation
Inactive Publication Date: 2009-01-21
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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Problems solved by technology
[0008] However, in the structure of the motor rotor iron core laminations in the prior art, the shaft holes 13 of the iron core laminations are circular. When the motor is assembled, the cooperation between the rotating shaft and the shaft holes is an interference fit, which is easy for the rotating shaft. cause scratches
Because it is an interference fit, it will also have a negative impact on the concentricity of the rotating shaft and the shaft hole, reducing the stability of the motor operation and increasing the noise of the motor
Method used
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[0030] The structure of the motor rotor core laminations of the present invention will be described in detail below with reference to the accompanying drawings and embodiments:
[0031] In the drawings, the same symbols are used for the same components in the present invention as in the prior art.
[0032] Such as Figure 1-6 As shown, the rotor 3 is composed of a plurality of stacked iron core laminations 16, the iron core laminations 16 are circular, and a plurality of wire grooves 17 are uniformly distributed on the outer circumference of the iron core laminations 16, and the wire grooves 17 It is oblong, and a shaft hole 18 is formed in the center of the iron core lamination 16, and more than two arcuate slots 19 are evenly distributed on the inner circumference of the shaft hole 18. The number of arcuate slots 19 is an even number and mutually symmetry. The shaft hole 18 is matched with the rotating shaft 10 .
[0033] In the present invention, because the arcuate groo...
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The present invention discloses a structure of iron-core laminated sheets of electric machine rotor, and consists of a plurality of .iron-core laminated sheets, which are piled and have a circular shape. The periphery of the iron-core laminated sheets is uniformly provided with a plurality of trunkings; a shaft hole is arranged in the center of the iron-core laminated sheets; and the internal circle of the shaft hole is uniformly provided with more than two arc grooves of an even number. The arc grooves are arranged symmetrically and match the shaft hole and the rotating shaft. The structure prevents the rotating shaft from being scraped when the rotating shaft is assembled; the bending of the iron-core laminated sheets after being assembled can be automatically eliminated without influence on the rotating shaft; the electric machine has the advantages of stable operation and low noise.
Description
technical field [0001] The invention belongs to a motor device, in particular to a structure of a motor rotor iron core lamination. Background technique [0002] Generally speaking, a motor is a machine that converts electrical energy into kinetic energy. Such a motor can be divided into a rotary motor that converts electrical energy into rotary motion and a reciprocating motor that converts electrical energy into linear reciprocating motion. [0003] Electric motors are installed as power sources in almost all products used in households such as refrigerators, air conditioners, washing machines, electric fans, and vacuum cleaners. [0004] In order to make the motor rotate continuously, a commutation rectifier is used. The function of the commutation rectifier is to convert the current sequentially, so that the rotor can rotate in a certain direction at any position. [0005] Such as Figure 1-3 As shown, the motor in the prior art includes a casing 1 with an open interior...
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Inventor 郭静
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD