Gear shifting mechanism and two-gear automatic gear shifting system

Abstract

The invention discloses a gear shifting mechanism and a two-gear automatic gear shifting system.The gear shifting mechanism comprises an input shaft and a second shaft which are arranged in parallel, one end of the input shaft is used for being connected with a power input end of an engine or a motor, and the other end of the input shaft is provided with a driving high-speed tooth through a clutch. A driving low-speed gear is further arranged in the middle of the input shaft; the second shaft is provided with a driven high-speed tooth meshed with the driving high-speed tooth and a driven low-speed tooth meshed with the driving low-speed tooth, and the driven low-speed tooth is installed on the second shaft through an overrun clutch. The gear shifting mechanism and the two-gear automatic gear shifting system have the advantages of being ingenious in structural design, smooth in gear shifting, small in impact force, beneficial to improving driving experience and improving gear shifting reliability and the like.

Description

technical field [0001] The invention relates to the technical field of power transmission systems, in particular to a shift mechanism and a two-speed automatic shift system. Background technique [0002] At present, when the existing two-speed electric vehicles change gears, they need to manually reduce the vehicle speed or interrupt the power to change gears, which directly affects the overall sense of driving continuity. At the same time, when the vehicle speed is reduced and the power is interrupted to change gears, when the shift slider is combined with another gear, due to the instantaneous speed change, the shift slider needs to overcome the moment of inertia of the drive motor, so that the shift slider The block and the gear teeth will produce a very large impact force at the moment of combination (especially when the high-speed gear is changed to a low-speed gear), resulting in obvious impact sound and impact force. Over time, this impact force will damage the gear a...

AI Technical Summary

Problems solved by technology

[0002] At present, when the existing two-speed electric vehicles change gears, they need to manually reduce the vehicle speed or interrupt the power to change gears, which directly affects the overall sense of driving continuity.

At the same time, when the vehicle speed is reduced and the power is interrupted to change gears, when the shift slider is combined with another gear, due to the instantaneous speed change, the shift slider needs to overcome the moment of inertia of the drive motor, so that the shift slider The block and the gear teeth will produce a very large impact force at the moment of combination (especially when the high-speed gear is changed to a low-speed gear), resulting in obvious impact sound and impact force. Over time, this impact force will damage the gear and reduce the life of the gear. There are potential safety hazards, which also greatly affect the riding comfort

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