Middle-mounted wheel core drive electric drive automatic speed change system

An automatic shifting and driving electric technology, applied to vehicle gearboxes, bicycles, motor vehicles, etc., can solve problems such as difficulty in setting up deceleration and shifting mechanisms, inability to use high-speed motors, and unsatisfactory motor efficiency, etc., to reduce distance changes , strong climbing and heavy load capacity, and the effect of extending the deceleration transmission path

CN112537405APending Publication Date: 2021-03-23SOUTHWEST UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-23

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Abstract

The invention discloses a middle-mounted wheel core driving electric driving automatic speed change system. The system comprises a power input mechanism, a driving wheel, a gear shifting transmissionmechanism arranged on a middle shaft outside the wheel, a middle shaft inside the wheel connected with the middle shaft outside the wheel through a chain transmission assembly, and a speed reduction output mechanism arranged on a wheel mounting shaft, wherein the gear shifting transmission mechanism comprises a single-side synchronizer, an overrunning clutch and a speed reduction assembly. The system is advantaged in that the speed reduction output mechanism is additionally arranged at the wheel core position of the driving wheel, the speed reduction ratio is increased, and therefore a high-speed motor can be adopted for driving, motor efficiency is greatly improved, the endurance mileage is increased, meanwhile, a chain transmission mode is reserved, and acceleration and deceleration impact of the two-wheeled vehicle can be buffered; the distance change between the chain wheels caused by up-and-down oscillation of a suspension system is reduced, two-gear gear shifting can be achieved,the electric two-wheeled vehicle has the high climbing and heavy load capacity, the motor can be located on an efficient platform all the time, and motor efficiency is further improved.
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Description

technical field

[0001] The invention relates to the technical field of electric drive systems of two-wheel vehicles, in particular to a center-mounted wheel core drive electric drive automatic transmission system. Background technique

[0002] The design structure of the chain drive has the advantages of simple structure, light weight, low cost, etc., and the advantage that the final reduction ratio can be easily changed by replacing the sprocket, so it is adopted by most two-wheeled vehicles. In addition, the chain can buffer the impact of acceleration and deceleration of the vehicle, and can also reduce the change in the distance between the sprockets caused by the up and down vibration of the suspension system.

[0003] The existing two-wheeled electric drive system capable of shifting gears usually sets the power input mechanism (motor, etc.) and the deceleration and shifting mechanism in the middle of the two-wheeled vehicle (below the seat), and then directly drives th...

Examples

Embodiment Construction

[0029] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0030] Such as figure 1 As shown, a center-mounted wheel core-driven electric drive automatic transmission system mainly includes a power input mechanism, a driving wheel 2, a shifting transmission mechanism arranged on the outer intermediate shaft 3, and the outer intermediate shaft through a chain transmission assembly. 3 connected to the in-wheel intermediate shaft 16 and the deceleration output mechanism arranged on the wheel installation shaft 17, the power input mechanism sequentially transmits power to the The deceleration output mechanism drives the drive wheel 2 to rotate by the deceleration output mechanism.

[0031] The shifting transmission mechanism includes a one-sided synchronizer 4, an overrunning clutch 15 and a reduction assembly. The one-side synchronizer 4, the overrunning clutch 15 and the first-stage deceleration driving gear 6 of the r...