Transmission gear shifting device

Abstract

The invention discloses a transmission gear shifting device and belongs to the field of electric vehicles. The shifting device comprises a push-pull mechanism, a rotating mechanism and a shifting mechanism, wherein the push-pull mechanism comprises a linear reciprocating motion mechanism and a connecting rod or a lever connected with the linear reciprocating motion mechanism; the rotating mechanism comprises a push-pull barrel and a shifting rotating barrel opposite to the push-pull barrel; fixing sleeves are arranged on the peripheries of the push-pull barrel and the shifting rotating barrel; and a motion decomposition mechanism is arranged on the inner circumference of the fixing sleeve, the motion decomposition mechanism transmits axial motion to the shifting fork and simultaneously performs circumferential rotation, the circumferential rotation changes the pause position of the axial motion, and the shifting rotating barrel pauses once at the starting point or the ending point of the axial motion every time the axial motion is performed, so that the shifting rotating barrel is shifted once between a low-speed gear and a high-speed gear. According to the transmission gear shifting device, the gear shifting mode can be simplified, the gear shifting speed is increased, the driving hidden danger in the vehicle driving process is reduced, and the vehicle driving safety is improved.

Description

technical field [0001] The invention relates to a gear switching structure, in particular to a transmission gear switching device, which belongs to the field of electric vehicles. Background technique [0002] As a vehicle with low energy consumption, no pollution, and convenient and fast movement, electric tricycles have been basically popularized in cities. In order to develop customers in hilly and mountainous areas, electric vehicle manufacturers have improved the shifting structure of electric vehicles. By shifting gears, it is possible to drive at high speed on flat roads or under no-load conditions, and to use high torque to move forward at low speeds under climbing or load conditions, which basically solves the problem of using electric vehicles in hills and mountains. There are two working conditions during the operation of the motor. When the vehicle needs to output a large torque, the forward speed can be reduced. In this case, it is suitable to use the low-speed ...

AI Technical Summary

Problems solved by technology

[0006] The above two patents switch between the two operating conditions manually, which invisibly increases the complexity of the operation. It is necessary to manually slide the gear during driving, and it needs to be switched during operation when shifting gears, which requires an occupation of One hand is used to operate the gear shift, and the other hand is used to drive the handle, and during the switching process, a switching process and operation time are required. Since the electric tricycle is basically operated by the handle, when one hand leaves the operating handle, it needs Distract driving attention, divert part of attention to shifting, bring potential danger to vehicle driving, especially when climbing a hill, when it is necessary to switch gears due to insufficient power, the potential danger is even greater. , for some female drivers, it is necessary to pay a certain amount of switching arm strength, which brings a certain degree of difficulty to driving. How to realize the automatic switching of gears is a goal most sought by those skilled in the art

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