Overrunning gear-shifting device

Abstract

The invention discloses an overrunning gear-shifting device, which comprises a driving shaft and a driven shaft. A first-gear driving sprocket and a second-gear driving sprocket are fixedly sleeved on the driving shaft, a first-gear driven one-way clutch is fixedly sleeved on the driven shaft, a first-gear driven sprocket in the first-gear driven one-way clutch is connected with the first-gear driving sprocket, the first-gear driving sprocket drives the first-gear driven one-way clutch to rotate, and the first-gear driven one-way clutch drives the driven shaft to rotate. Besides, a second-gear driven one-way/two-way clutch is sleeved on the driven shaft, the second-gear driving sprocket meshes with the second-gear driven sprocket in the second-gear driven one-way/two-way clutch, the second-gear driving sprocket drives the second-gear driven one-way/two-way clutch to rotate, and the second-gear driven one-way/two-way clutch drives the driven shaft to rotate. The overrunning gear-shifting device is simple and novel, capable of realizing gear shifting by the aid of the one-way clutch, the one-way/two-way clutch and a ratchet mechanism, and has the advantages of simple structure, small size, easiness in maintenance and low cost.

Description

technical field [0001] The invention relates to an engine auxiliary device, in particular to an overrunning shifting device capable of realizing overrunning shifting. Background technique [0002] In the prior art, various automobiles, motorcycles, and electric bicycle transmissions are of a great variety, but they are inseparable from each other. The transmissions mainly include manual transmissions, automatic transmissions and continuously variable transmissions. The manual transmission relies on the driver to change the speed manually, which requires very high experience of the driver. The level of the driver directly affects the safety of driving and the service life of the vehicle. For inexperienced drivers, when the speed changes suddenly, It will cause the engine to run under unsteady conditions, and it is prone to problems such as off-gear and flameout; the transmission ratio rotation and shifting of the automatic transmission are carried out automatically, and the c...

AI Technical Summary

Problems solved by technology

The manual transmission relies on the driver to change the speed manually, which requires very high experience of the driver. The level of the driver directly affects the safety of driving and the service life of the vehicle. For inexperienced drivers, when the speed changes suddenly, It will cause the engine to run under unsteady conditions, and it is prone to problems such as off-gear and flameout; the transmission ratio rotation and shifting of the automatic transmission are carried out automatically, and the conversion of each gear of the mechanical transmission is based on reflecting the engine load and The vehicle speed signal system is used to control the actuators of the shift system. The driver only needs to manipulate the accelerator pedal to control the vehicle speed. However, the automatic transmission still needs to go through two processes of separation and engagement when shifting gears. The driving force is cut off before the gear, so you can obviously feel the frustration, and the mechanism is complicated and difficult to repair. At the same time, due to the limitation of the sensor technology, the response to the speed change is slow, and it is not as sensitive as the manual gear; the continuously variable transmission can realize the continuous transmission ratio. Change, so as to get the best match between the transmission system and the engine operating conditions, theoretically improve the fuel economy and power of the vehicle, improve the driver's handling convenience and the passenger's ride comfort, so it is ideal in theory Motor vehicle transmissions, therefore, are widely used in existing scooters. However, CVTs are basically used in small vehicles such as motorcycles to use belt drives, and the load torque is limited. When the torque is large, the engine will lose Turning phenomenon directly affects the power, economy and safety of the car

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