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A high-speed motor rotor with grooves at both ends of a permanent magnet and a key shaft integrated

A high-speed motor and permanent magnet technology, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve problems such as motor failure, increase bonding force, increase bonding area, and reduce structural size Effect

Active Publication Date: 2019-02-22
鸣志电器(太仓)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the glue fails, the key A is loose and thrown out, causing the motor to fail

Method used

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  • A high-speed motor rotor with grooves at both ends of a permanent magnet and a key shaft integrated
  • A high-speed motor rotor with grooves at both ends of a permanent magnet and a key shaft integrated
  • A high-speed motor rotor with grooves at both ends of a permanent magnet and a key shaft integrated

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Such as image 3 As shown, a high-speed motor rotor with grooves at both ends of the permanent magnet and integrated key shaft, including permanent magnet 4 and key shaft integrated structure 1, 6, and the two ends of the permanent magnet 4 are respectively provided with key shaft integrated structure 1 , 6 are cooperatingly connected protrusions 3 and 5, and the protrusions 3 and 5 are provided with a groove 2 for inserting the integral structure of the key shaft.

[0026] The key-shaft integrated structure 1, 6 is processed on the shaft with a connection part consisting of a cylindrical groove 8 cooperating with the permanent magnet bump and a key 7 arranged in the cylindrical groove 8 and cooperating with the permanent magnet groove 2.

[0027] The permanent magnet groove 2 is an isosceles trapezoidal groove. The bottom angle of the trapezoidal groove is an obtuse angle. The connecting part is connected with the permanent magnet through glue.

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PUM

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Abstract

The invention relates to a high-speed motor rotor with slots at both ends of a permanent magnet and bond axes being integrated, which comprises a permanent magnet and bond axis integration structures, and is characterized in that two ends of the permanent magnet are respectively provided with convex blocks which are connected with the bond axis structures in a matched manner, and each convex block is provided with a groove in which the bond axis integration structure is inserted. Compared with the prior art, the high-speed motor rotor has the advantages that the permanent magnet is high in space occupation ratio, the electromagnetic performance is improved, and the like.

Description

technical field [0001] The invention relates to a high-speed motor rotor, in particular to a high-speed motor rotor with slots at both ends of the permanent magnet and integrated key shaft. Background technique [0002] In order to obtain a small moment of inertia and reduce the influence of centrifugal force on permanent magnets, high-speed small motors usually choose a permanent magnet structure with a large aspect ratio, such as figure 1 As shown, a is the rotor shaft, b is the permanent magnet, and c is the balance ring (one on each side). This structure processes elongated holes on the permanent magnet and cooperates with the shaft to form a rotating part, which has the characteristics of few parts and easy assembly. However, the space ratio of the permanent magnet is small, and the shaft section bonded to the permanent magnet occupies the space, so the space utilization rate is not high. [0003] In order to solve the impact of the slender hole structure, some litera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/28
Inventor 金万兵聂慧凡何欣雍玉芳唐斌松
Owner 鸣志电器(太仓)有限公司
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