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Motor

A connecting part and arc-shaped technology, which is applied in the field of motor stator structure, can solve the problems of low space utilization of square motor casings, and achieve the effects of convenient assembly, improved utilization, convenient transportation and installation

Inactive Publication Date: 2010-06-09
JOHNSON ELECTRIC (JIANGMEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defect of low space utilization rate of the existing square motor casing, the present invention provides a motor with high space utilization rate

Method used

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] image 3 It is a schematic diagram of a radial cross-section of a motor according to an embodiment of the present invention. Such as image 3 As shown, the motor includes a stator and a rotor 20, the stator includes a casing 10 and a ring magnet 12 installed in the casing, the rotor 20 is installed in the ring magnet 12, and can rotate in the stator, and the circle represented by a dotted line in the figure is the rotor 20 outline of the . The radial cross-section of the housing 10 is a quadrangle with rounded corners, which includes four side walls 10a-10d and four arc-shaped connecting parts 11a-11d. Specifically, the arc-shaped connecting part 11a connects two adjacent sides The walls 10a and 10b, the arc-shaped connecting portion 11b connects two adjacent side walls 10b and 10c, and so on.

[0017] Such as image 3 As shown, the ring magnet 12 is inst...

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Abstract

The invention discloses a motor, which comprises a stator and a rotor (20). The stator comprises a casing (10) and an annular magnet (12) which leans against the inner side of the casing. The casing (10) has a rounded polygonal radial cross section and comprises a plurality of side walls (10a-10d) and a plurality of curved connecting parts (11a-11d) connecting two adjacent side walls. The part, corresponding to the plurality of curved connecting parts (11a-11d), of the annular magnet is thicker than the part of side walls (10a-10d) to which the annular magnet leans against, and an air gap is reserved between the inner surface of the annular magnet and the outer surface of the rotor (20), wherein the inner surface of the annular magnet is a curved surface in which the part corresponding tothe plurality of curved connecting parts (11a-11d) radially protrudes more than the part the part corresponding to the plurality of side walls (10a-10d) do, so that the air gas corresponding to the plurality of curved connecting parts (11a-11d) is narrower than air gas corresponding to the plurality of side walls (10a-10d). The motor has a polygonal casing, is conveniently to transport and install and has high space utilization rate in the casing.

Description

technical field [0001] The invention relates to the field of motors, in particular to a stator structure of a motor. Background technique [0002] figure 1 Shown is a cross-sectional view of a traditional permanent magnet DC motor, which uses a cylindrical casing 1, a rotor 3 is installed in the cylindrical casing 1, and permanent magnets 2 are fixed to the inside of the cylindrical casing 1 and distributed on the rotor 3 around. However, the motor with such an external structure has the following problems: 1) it is easy to roll during transportation; 2) it is inconvenient to install and requires an additional positioning device. [0003] figure 2 Shown is a square motor developed in the industry in recent years. This motor adopts a square shell 1', permanent magnets 2' are installed on the four side walls of the inner surface of the shell 1', and the rotor 3' is installed in the shell 1'. Magnets 2' are distributed around the rotor 3'. Although this kind of motor with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/17H02K23/04
CPCH02K23/04H02K1/17
Inventor 黄道凡于彪廖添军
Owner JOHNSON ELECTRIC (JIANGMEN) CO LTD