Driving system of rim

Abstract

The invention provides a driving system of a rim and the driving system is installed inside the rim so as to drive or brake the rim. The system comprises a motor system within wheels, a two-piece rim, a wheel cover which does not rotate and is in a static state, and a braking device, wherein the motor system within the wheels comprises a ring-shaped rotor, an inner wheel bearing, an outer wheel bearing, a ring-shaped stator, an inner ring-shaped knuckle, an outer ring-shaped knuckle, a motor connector set, an inverter connector set and a ring-shaped inverter. The two-piece rim comprises a main rim and an outer rim. The braking device comprises a ring-shaped braking disc and braking calibers. The two-piece rim which is assembled with a rotor bracket has a groove depth which is bigger than that of a standard rim, the thin-wall wheel bearing with a long diameter, the ring-shaped knuckle with large inside space, the static wheel cover without rotation and the ring-shaped inverter fixed on the axial outer side of the outer ring-shaped knuckle. The system has the advantages of being convenient to assemble and maintain, improving comfort and driving safety of a car and improving dynamic characteristic of the car.

Description

technical field [0001] The invention relates to the technical field of vehicle drive, in particular to a wheel drive device, in particular to a wheel rim drive system which is easy to assemble and disassemble and is equipped with an inverter inside the wheel. Background technique [0002] Existing wheel driving devices mainly contain two types, one is a high-speed motor driving device with a speed reducer, and the other is a low-speed motor driving device without a speed reducer. The former is mostly implemented by a high-speed, permanent magnet, air-cooled or water-cooled inner rotor motor with a speed of 12,000-15,000rpm, and the gear ratio of the matched reducer is about 10-12. The latter is usually achieved by an external rotor motor with a pole number of 20-24, concentrated winding, permanent magnet, air-cooled or water-cooled, and its maximum speed is 1500-2000rpm. Compared with the former, the latter has a more compact structure, and the outer rotor motor used has a ...

AI Technical Summary

Problems solved by technology

However, since the motor controller and its cooling water jacket extend radially inward, occupying a certain annular area, the outer rotor bracket must extend to the hub unit for connection to transmit power, and wrap the motor controller and its cooling water jacket Therefore, the above-mentioned disclosed technical solutions have the same obvious problem, that is, it is difficult to assemble and disassemble, and the steering knuckle and the wheel drive system must be assembled first, and perhaps the cooling pipeline and the DC power cable must be connected first and then assembled to the suspension. on the shelf

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