A kind of automatic free wheel hub device for vehicle and automobile

Abstract

The invention discloses an automatic free hub device for a vehicle, which comprises a half shaft, an inner shell, a transmission sleeve, a displacement pin, a one-way clutch and a hub. The half shaft cooperates with the transmission sleeve through the helical spline, and the transmission sleeve is connected with the wheel hub through the one-way clutch. In the four-wheel drive mode, the half shaft drives the transmission sleeve to drive the hub to rotate, and at the same time, the half shaft and the hub are locked together by the shift pin. In the two-wheel drive mode, the half shaft and the hub can be automatically unlocked. The invention also provides an automobile using the automatic free wheel hub device. The present invention adds a new structure and mechanical design on the basis of the structure of the traditional free hub. The processing and transformation process is relatively simple, and the transformation cost is relatively low. It relies on the cooperation between the spline screw drive sleeve and the one-way clutch of the one-way The characteristics of power transmission are used to realize the switch between four-wheel drive and two-wheel drive, and the switch between four-wheel drive and two-wheel drive can be automatically realized without manual control of the joystick or electronic control knob to realize time-sharing four-wheel drive.

Description

technical field [0001] The invention relates to an automobile driving system, in particular to a novel automatic free wheel hub for a vehicle and an automobile which realize the separation and combination of a half shaft and a wheel hub. Background technique [0002] The free wheel hub is also called the shaft clutch or the wheel locker. Its main function is to freely realize the switching between four-wheel drive and two-wheel drive according to the actual working conditions of the car, reducing unnecessary wear and saving fuel. The fuel economy of the two-wheel drive is better, and the four-wheel drive has strong passability and good stability. At present, four-wheel drive is mostly used in models such as SUVs and off-road vehicles, while most ordinary passenger cars still use two-wheel drive. Therefore, free wheels are more used in models such as off-road vehicles, while ordinary Passenger car applications are less. Most of the traditional free hubs are manual free hubs...

AI Technical Summary

Problems solved by technology

At this stage, four-wheel drive electric vehicles, especially those driven by four-wheel independent wheel or hub motors, often use a single-axis dual-motor drive when cruising with a medium load, and the other two motors follow the drive control strategy to save power consumption , but for a permanent magnet motor with relatively high drive efficiency, it will lead to the generation of induced electromotive force. Under the action of leakage current, compared with asynchronous excitation motor, it will increase reactive power loss and electromagnetic load, and reduce the electronic components of motor inverter At the same time of device life, additional driving energy loss is added

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