Electric motor, power device and unmanned aircraft using the power device

A technology of unmanned aerial vehicles and power devices, applied in the field of unmanned aerial vehicles, can solve problems such as large vibration and noise, and unstable operation of brushless motors

Active Publication Date: 2016-10-26
SZ DJI OSMO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inherent radial clearance of the bearing, when the stator and the rotor rotate relative to each other, there will be a small amount of radial movement, resulting in relatively unstable operation of the brushless motor and large vibration noise

Method used

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  • Electric motor, power device and unmanned aircraft using the power device
  • Electric motor, power device and unmanned aircraft using the power device
  • Electric motor, power device and unmanned aircraft using the power device

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Embodiment Construction

[0057] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0058] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or t...

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Abstract

Disclosed are an electric motor, a power device using the electric motor and an unmanned aircraft. The unmanned aircraft comprises an aircraft body, an electric motor provided on the aircraft body, and a propeller provided on the electric motor. The electric motor comprises a base, a rotor, a rotating shaft and a bearing. The rotor is rotatably sheathed on the base, the rotating shaft has one end thereof fixedly provided on the rotor, and the other end rotatably connected to the base via the bearing. The propeller is connected to the rotating shaft. The bearing comprises an inner ring, an outer ring and a roller, wherein the inner ring is fixedly sheathed on the rotating shaft, the outer ring is fixed provided on the base and surrounds the inner ring, and the roller is movably provided between the inner ring and the outer ring. The outer ring and the base are connected by means of an interference fit. The operation noises of the above-mentioned unmanned aircraft and the electric motor thereof are relatively small.

Description

technical field [0001] The invention relates to a motor, a power device using the motor and an unmanned aerial vehicle using the power device. Background technique [0002] Due to the advantages of low loss, low noise, smooth operation and long life, brushless motors are widely used in the field of mechatronics applications. Generally, a brushless motor includes a base, a stator mounted on the base, and a rotor rotated on the stator. Bearings are usually arranged between the stator and the rotor to reduce friction during relative rotation between the stator and the rotor. Due to the inherent radial clearance of the bearing, when the stator and the rotor rotate relative to each other, there will be a small amount of radial movement, resulting in relatively unstable operation of the brushless motor and relatively large vibration and noise. Contents of the invention [0003] In view of the above-mentioned situation, it is necessary to provide a motor with relatively low ope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/173B64C27/14
CPCB64C27/14H02K5/1732B64U50/19B64U2101/30B64U10/10F16C43/08H02K1/22H02K5/16
Inventor 耶方明
Owner SZ DJI OSMO TECH CO LTD
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