Automatic clutch gear shifting arm assembly, engine and motorcycle

Abstract

The invention discloses an automatic clutch gear shifting arm assembly, an engine and a motorcycle. The automatic clutch gear shifting arm assembly comprises a gear shifting shaft, a limiting plate, a moving plate, a clutch operating arm and a return torsional spring used for enabling the gear shifting shaft to return, and further comprises a guide part rotatably sleeving the gear shifting shaft, wherein the moving plate movably sleeves the gear shifting shaft and axially presses the limiting plate fixed to the gear shifting shaft under the action of elastic force; the clutch operating arm is fixedly arranged on the gear shifting shaft in the circumferential direction; the gear shifting shaft drives the moving plate to achieve gear shifting through rotational hysteresis with the clutch operating arm; and the guide part performs sliding guiding on the moving plate in the axial direction. According to the automatic clutch gear shifting arm assembly, a gear shifting moving block stably slides in a reciprocating manner in the axial direction through the guide part, reliability of motion of the moving block is improved, automatic clutch gear shifting is smooth, and the structure is simple and compact.

Description

technical field [0001] The invention relates to motorcycle parts, in particular to an automatic clutch shift arm assembly, an engine and a motorcycle. Background technique [0002] When the motorcycle is shifting gears while driving, the engine can only shift gears after the driver manually manipulates the separation clutch. When the driver is operating the motorcycle to change gears, he needs to cooperate with his hands and feet. While manipulating the clutch handle with his hands, he also uses his feet to step on the shift pedal to change gears. Large, the engine is often damaged due to improper human operation. In order to solve the above problems, an automatic clutch shift mechanism has appeared, which automatically realizes the clutch disconnection and closure while operating the shift pedal; in the prior art, generally in the shift shaft A clutch control arm for driving the clutch is installed on the top, and the shift shaft drives the clutch control arm and the shift...

AI Technical Summary

Problems solved by technology

When the driver is operating the motorcycle to change gears, he needs to cooperate with his hands and feet. While manipulating the clutch handle with his hands, he also uses his feet to step on the shift pedal to change gears. Large, the engine is often damaged due to improper human operation. In order to solve the above problems, an automatic clutch shift mechanism has appeared, which automatically realizes the clutch disconnection and closure while operating the shift pedal; in the prior art, generally in the shift shaft A clutch control arm for driving the clutch is installed on the top, and the shift shaft drives the clutch control arm and the shift plate to rotate successively to realize the automatic clutch shift function. The shifting drum is rotated to realize gear shifting. The shifting plate is provided with a driving hole for accommodating the swing of the shifting fork along the circumference. The shifting fork rotates a certain angle in the driving hole to drive the shifting plate to rotate. The return torsion spring, and the shift plate has reciprocating sliding in the axial direction during the working process, and is generally guided in the axial direction by the shift fork. The working force and the reliability of the parts are poor; the shift fork and the shift shaft are connected by welding, the welding deformation is large, the welding tooling is complicated, and the welding efficiency is low. At the same time, once a single part of the shift fork fails or the shift fork is used If it is damaged, it will lead to the scrapping of the shift shaft, shift plate, pressure spring, and other parts at the same time

In addition, the guide surface of the shift paddle only has one side of the force-bearing surface, and the guidance is unreliable, which affects the flexibility of the paddle in the axial swing, and is likely to cause a decrease in the matching accuracy of the paddle and related components, accelerate wear, and easily lead to During the entire shifting process, the shift fork is separated from the shift plate at the initial stage of the shift plate return, causing the shift plate to lose its guidance, destroying the flexibility of the shift plate in the axial direction, and easily It will cause the matching accuracy of the shift plate and related parts to decrease, accelerate wear, and easily cause the shift plate to be stuck, and even lead to shift failure

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