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Brushless motor

A brushless motor and component technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve problems such as hidden dangers of motor safety, fan blade falling off, fan blade axial displacement, etc., to improve work stability, prevent falling off, Avoid the effect of axial displacement

Pending Publication Date: 2018-11-30
东兴昌科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to fix the fan blade on the shaft core, the powder metallurgy bushing is usually embedded inside the fan blade, and the installation of the fan blade and the shaft core is realized through the interference fit between the bushing and the shaft core, but usually due to the gap between the two Dimensional errors cause poor assembly, and when the rotor rotates at a high speed, the fan blades and the shaft core may rotate relative to each other, causing axial displacement of the fan blades. Long-term operation of the motor may cause the fan blades to fall off from the shaft core, causing potential safety hazards for the motor

Method used

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Embodiment Construction

[0024] In order to make those skilled in the art more clearly understand the purpose, technical solutions and advantages of the present invention, the present application will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0025] see Figure 1 to Figure 8 , Figure 1 to Figure 8 A specific embodiment of the brushless motor 1 of the present invention is shown. To show the rotor assembly more clearly, Figure 1 to Figure 3 The middle stator assembly is not shown. In the embodiment shown in the drawings, the brushless motor 1 includes a stator assembly, a rotor assembly disposed in the stator assembly, and a shaft core 202 fixed on the rotor assembly. The fan blade 30; wherein, the shaft core 202 is formed with a straight knurled portion 2021, and the through hole 305 of the fan blade 30 is in interference fit with the straight knurled portion 2021 so that the fan blade 30 It is fixed on the shaft core 202. Preferably, in this embo...

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Abstract

The invention discloses a brushless motor. The brushless motor comprises a stator assembly, a rotor assembly and a fan blade, wherein the rotor assembly is arranged in the stator assembly, the fan blade is fixed on a shaft core of the rotor assembly, a straight-line knurling part is formed on the shaft core, and a through hole of the fan blade is in interference fit with the straight-line knurlingpart so that the fan blade is fixed on the shaft core. Compared with the prior art, the straight-line knurling part is formed on the shaft core of the brushless motor, and the through hole of the fanblade is in interference fit with the straight-line knurling part so that the fan blade is fixed on the shaft core; by interference fit of the fan blade and the straight-line knurling part, radial rotation of the fan blade can be prevented, axial displacement of the fan blade can be effectively prevented, so that the fan blade is prevented from falling off from the shaft core, and the working stability of the motor is improved.

Description

technical field [0001] The present invention relates to the technical field of motors, and more particularly relates to a brushless motor. Background technique [0002] The motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its function is to generate driving torque as a power source for electrical appliances or various machines. The brushless motor is a motor that uses semiconductor switching devices to achieve electronic commutation, that is, electronic switching devices are used to replace the traditional contact commutator and brushes, so that it has no mechanical noise, long life, high-speed rotation, and high precision. And easy to control and so on. A brushless motor is usually equipped with a fan blade at the end of its shaft core. When the motor is running, the rotor will release a lot of heat when it rotates at high speed. The fan blade can play the role of exhaust a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/14H02K9/06
CPCH02K7/14H02K9/06
Inventor 刘唐根杨敏如曾峰
Owner 东兴昌科技(深圳)有限公司
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