#$%^&*AU2016101383A420161117.pdf#####Title: HIGHER-SAFETY WHEEL HUB CLUTCH FOR ELECTRIC WHEELCHAIR Abstract The present invention relates to a higher-safety wheel hub clutch for an electric wheelchair, including a wheel hub, a motor shaft, a wheel axle core, and a clutch switch the wheel axle core is fixed to the motor shaft, and the wheel axle core is located in an axial center hole of the wheel hub the clutch switch is located in the axial center hole of the wheel hub and coordinated with the wheel axle core a number of first bulges which are annularly spaced apart are formed on a circumferential edge of the wheel axle core, a number of second bulges which are annularly spaced apart are formed on an end face of a side of the clutch switch, and a number of stepped bulges are formed in a circumference of the axial center hole of the wheel hub limiting columns are formed on part of the stepped bulges, a number of limiting notches are formed on the end face, on which the second bulges are arranged, of the clutch switch, and a limiting column corresponds to a limiting notch the length of the limiting columns along the wheel hub axis is greater than that of the second bulges along the wheel hub axis, and the coordination of the clutch switch with the wheel axle core can locate the second bulges between two first bulges, and can locate the limiting columns in the limiting notches, a first positioning groove which is axially arranged along the motor shaft is formed on a surface of the motor shaft, and a second positioning groove which is axially arranged along the wheel axle core is formed on a surface of the wheel axle core the wheel axle core is sleeved on the motor shaft and maintains circumferential fixation of the wheel axle core by a positioning block and the positioning block is located between the first positioning groove and the second positioning groove. g&~s1
