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A brushless DC motor with hollow shaft

A brushed DC motor and hollow shaft technology, which is applied to synchronous motors with stationary armatures and rotating magnets, electromechanical devices, electrical components, etc. The efficiency of assembly, the effect of reducing assembly difficulty and cost

Pending Publication Date: 2019-01-04
SHENZHEN HENGDRIVER MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with ordinary motors, the hollow shaft motor has a hollow shaft. The rotor shell assembly of the hollow shaft motor in the prior art is composed of a cylinder with magnets, a rotor cover and a hollow shaft. The cylinder, rotor cover and hollow shaft are The parts that are isolated from each other need to be produced separately, and the accuracy of each other is difficult to guarantee, which affects the normal service life of the motor, and the assembly is difficult, the assembly efficiency is low, and the production cost is high.

Method used

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  • A brushless DC motor with hollow shaft
  • A brushless DC motor with hollow shaft
  • A brushless DC motor with hollow shaft

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Embodiment Construction

[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of...

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Abstract

A brushless DC motor with hollow shaft, the motor includes a magnet, coils and stator cores, the motor further comprises a barrel, At one end of that barrel, a rotor end cover is formed to extend inward, A middle part of that rotor end cover is formed with a hollow, the hollow edge extends in a direction perpendicular to the rotor end cover to form a hollow shaft body, the hollow shaft body and the cylinder body are mutually parallel, Between that hollow shaft body and the cylinder body is for a magnet accommodating the magnet, A space between the coil and the stator core, a hollow shaft rotorshell integrally formed between the cylinder, the rotor end cover and the hollow shaft body, and the motor support comprises a bearing end portion extending inwardly to form a nesting portion, wherein a support portion is formed on the nesting portion, and an inner side of the stator core rests on the support portion. The invention improves the precision of the parts, reduces the assembly difficulty, improves the assembly efficiency, realizes the integrated molding, and reduces the cost.

Description

technical field [0001] The invention relates to a hollow-shaft brushless DC motor and relates to the technical field of motors. Background technique [0002] A brushless DC motor is composed of a motor body and a driver, also known as a commutatorless motor, and is a typical mechatronic product. DC motors have fast response, large starting torque, and the ability to provide rated torque from zero speed to rated speed. The brushless DC motor is a kind of synchronous motor. The speed of the motor rotor is affected by the speed of the rotating magnetic field of the motor stator and the number of rotor poles (p). The power supply can be directly input by DC (generally 24v) or AC (110v / 220v). If the input is AC, it needs to be converted to DC by a converter. [0003] Compared with ordinary motors, the hollow shaft motor has a hollow shaft. The rotor shell assembly of the hollow shaft motor in the prior art is composed of a cylinder housing magnets, a rotor cover and a hollow sh...

Claims

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Application Information

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IPC IPC(8): H02K21/22H02K1/27H02K7/08H02K5/04H02K29/08
CPCH02K1/2786H02K5/04H02K7/088H02K21/22H02K29/08
Inventor 张国华张琪洪军旗张磊钱梦娴
Owner SHENZHEN HENGDRIVER MOTOR CO LTD
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