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Hollow cup brush DC motor and robot

A brushed DC motor and coreless technology, applied in the direction of DC commutators, electromechanical devices, electrical components, etc., can solve the problems of uneven distribution of air gap magnetic density, high cost of motors, large torque fluctuations, etc., to achieve increased Air-gap magnetic density, improved overall performance, and reduced torque ripple

Inactive Publication Date: 2019-09-24
UBTECH ROBOTICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a hollow cup brushed DC motor, which is used to solve the problems of large magnetic flux leakage, uneven and reduced magnetic density distribution of the air gap, high motor cost and low torque in the existing hollow cup brushed DC motor. Volatile Technical Issues

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  • Hollow cup brush DC motor and robot
  • Hollow cup brush DC motor and robot
  • Hollow cup brush DC motor and robot

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Embodiment Construction

[0051] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with specific drawings and specific embodiments. Wherein, the same or similar symbols in the drawings of the specific embodiments of the present invention indicate the same or similar elements, or elements with the same or similar functions. It should be understood that the specific embodiments described below are intended to explain the present invention, not to limit the present invention.

[0052] It should be noted that when an element is referred to as being “fixed on” or “mounted on” or “provided on” or “connected to” another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "le...

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Abstract

The invention belongs to the technical field of motor, and aims at providing a hollow cup brush DC motor and a robot. The hollow cup brush DC motor comprises a pull pipe sleeving on a motor rotating shaft, an inner magnetic ring sleeving on the pull pipe and a hollow cup winding assembly movably sleeving on the inner magnetic ring. An outer magnetic ring is fixedly connected on a shell, and the motor rotating shaft drives a load. The inner magnetic ring is set as an annular magnetic ring with more even poles so as to ensure that the N pole and the S pole of the inner and outer magnetic rings correspond to each other, and the sinusoidal magnetization mode is used, the magnetic flux leakage of the motor is effectively reduced, the magnetic density waveform of the internal air gap of the motor is improved, the inner magnetic ring can exert the maximum magnetic performance in the unit volume and thus the output torque and the output efficiency of the motor can be increased, the torque fluctuation of the motor can be reduced and the cost of the motor can be reduced.

Description

technical field [0001] The invention belongs to the technical field of motors, and more specifically relates to a coreless brushed DC motor and a robot. Background technique [0002] The coreless motor belongs to the DC permanent magnet servo and control motor. Because it adopts the ironless rotor, it completely eliminates the power loss caused by the eddy current formed by the iron core in the traditional motor. Therefore, it has outstanding energy-saving characteristics and is sensitive and convenient. Control characteristics and stable running characteristics. Generally, coreless motors are divided into two types: brushed and brushless. Taking the type of brush as an example, the existing coreless brushed DC motor is equipped with a magnetically conductive thin stainless steel drawing tube inside the permanent magnet, and a bearing is installed in the drawing tube, and the rotating shaft of the motor passes through the bearing, and the drawing tube There is an air gap b...

Claims

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Application Information

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IPC IPC(8): H02K5/04H02K7/08H02K23/04H02K23/58H02K1/22H02K1/27H02K3/04H02K3/28H02K3/47
CPCH02K1/22H02K1/2733H02K3/04H02K3/28H02K3/47H02K5/04H02K7/083H02K23/04H02K23/58
Inventor 戴耿志范文华周彦熊友军庞建新
Owner UBTECH ROBOTICS CORP LTD
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