Rotor for outer rotor brushless electric motor

A technology of brushless motors and external rotors, applied in the direction of synchronous motors with stationary armatures and rotating magnets, electric components, electrical components, etc., can solve the problem of motor looseness and misalignment, operation that increases rotor costs, and increases rotor costs And other issues

Inactive Publication Date: 2018-01-02
SOLER & PALAU RESEARCH SLU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Said conventional housings for the rotor of an external rotor brushless motor must have holding means for holding the shaft on which the rotor is assembled on the applied motor, this is done by incorporating a secondary bushing into the housing Axial openings where, in addition to defining possible looseness and misalignment of the assembled bushings leading to failure of the applied motor, the bushings must also be fixed so as to be integral with the housing, which entails an increase in the cost of the rotor operate
[0005] On the other hand, for rotor applications such as driving fan propellers or impellers, it is necessary to incorporate flanges on the housing of the rotor for fastening the elements to be driven, which in turn requires operations that also increase the cost of the rotor

Method used

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  • Rotor for outer rotor brushless electric motor
  • Rotor for outer rotor brushless electric motor
  • Rotor for outer rotor brushless electric motor

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Embodiment Construction

[0016] The object of the invention is a rotor for an external rotor brushless motor which has been developed according to an embodiment which improves the rotor conventionally used in said application, e.g. figure 1 Shown is a rotor having a housing 1 formed by press-forming an iron plate, on which magnets 2 are provided on the inner part to define the operation of the rotor in the applied electric machine.

[0017] In said type of rotor, the casing 1 made of iron plate requires secondary incorporation of the bushing 3 for holding the shaft 4 that assembles the rotor in the applied motor, and the incorporation of the flange 5 into the On the outer part for holding elements that must rotate with the rotor, such as the propeller of an axial fan or the impeller of a radial fan, the incorporation of said bushing 3 and said flange 5 requires supplementary assembly and fixing operations, These operations increase the cost of the rotor and make the rotor prone to play and misalignmen...

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PUM

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Abstract

The invention relates to a rotor for an outer rotor brushless electric motor, formed by a casing containing a shaft (4) for assembly on the electric motor of application and magnets (2) for activatingthe operation, and consisting of an aluminium casing (6), produced from a single part, which defines a cylindrical body closed on one end, in the centre of which there is a structure (7) provided with an axial opening (8) in which the shaft (4) is mounted, while, on the outer part, the cylindrical body itself determines a structure (9) for holding an element that has to rotate with the rotor.

Description

technical field [0001] The invention relates to the formation of an external rotor brushless motor, while at the same time proposing a rotor for said type of motor, which is structurally developed to have characteristics that make it more advantageous with respect to the rotors currently used in such motors . Background technique [0002] Outer rotor brushless motors offer structural, functional and performance features that make this type of motor especially preferred over brushed motors which have been almost completely ignored in many applications. [0003] Due to the functional system of said motors, the rotors of these motors require a housing made of magnetic material in order to fix the magnets of the running system to the rotor; therefore, the rotors in these motors usually consist of a housing formed by pressing and forming iron plates body made to meet the requirements required for the motor in question. [0004] Said conventional housings for the rotor of an ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K21/22
CPCH02K1/28H02K5/02H02K7/14H02K21/22
Inventor M·加姆伊桑斯博乌
Owner SOLER & PALAU RESEARCH SLU
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