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Motor shell, brushless direct current motor and unmanned aerial vehicle

A technology of brushing DC motors and casings, applied in the directions of casings/covers/supports, electrical components, electromechanical devices, etc., can solve the problems of poor concentricity between the casing and the motor shaft, shaft bending, etc., and achieve small coaxiality. , Reduce the installation pressure, the effect of tight fit

Pending Publication Date: 2020-04-24
深圳市科创兴电机科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the interference between the motor shaft and the casing increases, the shaft bending phenomenon will occur during the assembly process of the motor shaft and the casing, and the concentricity between the casing and the motor shaft will be poor.

Method used

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  • Motor shell, brushless direct current motor and unmanned aerial vehicle
  • Motor shell, brushless direct current motor and unmanned aerial vehicle
  • Motor shell, brushless direct current motor and unmanned aerial vehicle

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Embodiment Construction

[0022] 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 those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0023] It should be noted that, in the case of no conflict, the following embodiments may be combined.

[0024] see figure 1 One embodiment of the motor casing in the embodiment of the present invention includes: the motor casing includes a casing 10, a main shaft 20 connected to the casing 10 with an interference fit, and a reinforcement sleeve 30 fixed to the main shaft 20, the The reinforcement sleeve 30 abuts against the casing 10 and is fixedly connected with the casing ...

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Abstract

The embodiment of the invention discloses a motor shell, a brushless direct current motor and an unmanned aerial vehicle. The motor shell is characterized in that the motor shell comprises a shell body, a main shaft connected to the shell body in an interference fit mode and a reinforcing sleeve fixed to the main shaft, and the reinforcing sleeve abuts against the shell body and is fixedly connected with the shell body. The main shaft and the shell body are in interference connection and are in close fit. Furthermore, the reinforcing sleeve is fixed to the main shaft, and the reinforcing sleeve and the shell body are fixed to each other, so that the fixed connection strength of the main shaft and the shell body is further improved, and the capacity of the main shaft for resisting externalaxial impact force can be improved. Moreover, the reinforcing sleeve reduces the mounting pressure on the main shaft during assembly, and the influence on the coaxiality of the main shaft is small.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor casing, a brushless DC motor and an unmanned aerial vehicle. Background technique [0002] The brushless DC motor includes a rotor assembly and a stator assembly. The rotor assembly includes a casing and a main shaft fixed to the casing. The motor shaft is connected to the casing through a plug-in interference fit to improve the concentricity and Matching precision. In the related art, the push-off force of the motor shaft is distributed in the range of 15-20KG. When the impact force of the motor falling is greater than the push-off force of the motor shaft, the motor shaft will loosen and shift. When the interference between the motor shaft and the casing increases, the shaft bending phenomenon will occur during the assembly process of the motor shaft and the casing, and the concentricity between the casing and the motor shaft will be poor. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/16H02K5/04H02K29/00
CPCH02K5/16H02K5/04H02K29/00
Inventor 周少平叶立厚唐小龙
Owner 深圳市科创兴电机科技有限公司
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