Direct-current brushless driving wheel structure of electric wheelchair

Abstract

The invention provides a direct-current brushless driving wheel structure of an electric wheelchair and belongs to an article for daily use of people. The direct-current brushless driving wheel structure comprises tires, a motor, a speed reducing mechanism, a wheel hub driving disc and a power-losing braking mechanism, and is characterized in that the motor comprises a stator shell, a stator winding, a rotor and a rotor shaft, wherein the stator shell is provided with a stator winding cavity, and a stator winding is arranged in the stator winding cavity; the rotor is arranged in a rotor containing cavity of the stator winding; a rotor shaft hole is formed at the center of the rotor; the rotor shaft is arranged on the rotor in a penetrating manner; one end of the rotor shaft is connected with the speed reducing mechanism, and the other end of the rotor shaft is matched with the power-losing braking mechanism; the speed reducing mechanism comprises a box body of a speed reducing box, a first-grade planetary speed reducing device and a second-grade planetary speed reducing device; the box body of the speed reducing box is fixed with the stator shell; the first-grade planetary speed reducing device is matched with one end of the rotor shaft; and the second-grade planetary speed reducing device is matched with the first-grade planetary speed reducing device and the wheel hub driving disc. The direct-current brushless driving wheel structure disclosed by the invention is high in transmission efficiency, good in energy-saving effect, high in operation efficiency, simple in structure, convenient to manufacture and assembly, convenient to maintain and flexible to use.

Description

technical field [0001] The invention belongs to the technical field of daily necessities for human beings, and in particular relates to a DC brushless driving wheel structure of an electric wheelchair. Background technique [0002] Electric wheelchairs, also known as electric wheelchairs, are transportation tools for special groups such as the disabled, elderly and infirm, and medical and clinical rehabilitation patients. There is also a lot of technical information about electric wheelchairs in published Chinese patent documents, such as Authorized announcement number CN2745544Y recommends "multifunctional electric wheelchair" (four-wheel structure), CN201379725Y provides "obstacle avoidance electric wheelchair", CN101589979B introduces "multifunctional electric wheelchair" and CN201684098U discloses "electric wheelchair", etc. Wait. [0003] Not limited to the power part of the driving wheel of the electric wheelchair listed above usually includes a motor, a reduction bo...

AI Technical Summary

Problems solved by technology

[0003] Not limited to the power part of the driving wheel of the electric wheelchair listed above usually includes a motor, a reduction box that is a reduction mechanism and a power-off braking mechanism. Since the motor is a high-speed DC brush motor, the carbon brush is easy to wear and has a short service life, and The operating efficiency is about 60-70%, and the energy loss is relatively large; the reduction mechanism is composed of a worm gear and a spur gear reducer, and the operating efficiency is also about 60-70%; the power-off brake mechanism is a power-off brake Although it has the characteristics of rel

Images