Direct-drive hub motor of wheelchair

Abstract

The invention relates to a direct-drive hub motor of a wheelchair. The direct-drive hub motor of the wheelchair comprises a hub, a rotor core, magnetic steel, a supporting seat, a stator, a motor shaft, a stator plate, a rotor plate, a friction plate, a spring, an unlocking handle, a transmission rod and a magnetic brake seat. The stator is connected with the motor shaft to form a stator component; a rotor component consisting of the hub, the rotor core, the magnetic steel and a supporting seat wheel is rotatably supported on the motor shaft, wherein the rotor core is fixedly connected in therotor groove; the stator plate is connected with the magnetic brake seat with an interval L, the friction plate and the rotor plate are axially and movably arranged in the interval, the sum of the thicknesses of the friction plate and the rotor plate is smaller than L, and the spring is arranged between the rotor plate and the magnetic brake seat; the unlocking handle sleeves the motor shaft and is circumferentially distributed with a plurality of lugs, the lugs are provided with arc slotted holes, the upper ends of the arc slotted holes are provided with spiral surfaces, the transmission rodpenetrates the arc slotted holes and one end of the magnetic brake seat to be connected with the rotor plate, and one end of the transmission rod is connected with the unlocking handle. The direct-drive hub motor of a wheelchair has good dynamic balance and braking response, and the brake state can be manually released in a power-off state.

Description

technical field [0001] The invention relates to a direct drive internal brake motor of a wheelchair. Background technique [0002] Most of the drive motors used in existing wheelchairs are brushless or brushless toothed hub motors with complex internal structures. The rotor assembly is formed by mechanical connections of multiple parts. The braking part of the vehicle is completed relying on the external mechanical brake structure, such as disc brakes, servo brakes, drum brakes, etc., with brake lines and manual brake handles to achieve vehicle braking. This type of braking method has a long transmission line and a relatively complicated structure. In addition, the brake parts are exposed, and dust and sand enter the period, causing the corresponding brake components to wear and weaken the braking effect; at the same time, some operations of the operating parts will produce some unnecessary Even unsafe actions, such as manual brake levers, the wheels will rotate freely when...

AI Technical Summary

Problems solved by technology

[0002] Most of the drive motors used in existing wheelchairs are brushless or brushless toothed hub motors with complex internal structures. The rotor assembly is formed by mechanical connections of multiple parts. The braking part is completed relying on the external mechanical brake structure, such as disc brakes, servo brakes, drum brakes, etc., with brake lines and manual brake handles to achieve vehicle braking

This type of braking method has a long transmission line and a relatively complicated structure. In addition, the brake parts are exposed, and dust and sand enter the period, causing the corresponding brake components to wear and weaken the braking effect; at the same time, some operations of the operating parts will produce some unnecessary Even unsafe actions, such as manual brake levers, the wheels will rotate freely when released, causing the car to slide; in addition, the brake levers and brake lines affect the appearance of the whole vehicle, making it not have the aesthetic feeling of a modern vehicle, and occupying the whole vehicle At the same time, the overall cost of space is relatively high

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