Automatic clutch driving mechanism, engine and motorcycle

Abstract

The invention discloses an automatic clutch driving mechanism, an engine and a motorcycle. The automatic clutch driving mechanism comprises a clutch cam disc and a clutch operating rocker arm, wherein an open groove is formed in the clutch cam disc; the clutch operating rocker arm drives the clutch cam disc to rotate through the open groove, and separation and reunion of a clutch are achieved; a curve formed by the cross section of the open groove on the side wall is a driving line; the driving line is integrally symmetrical and is gradually increased from inside to outside; and the single side edge of the driving line sequentially comprises a first linear section and a curve section from inside to outside. According to the automatic clutch driving mechanism, driving resistance of the automatic clutch driving mechanism is prevented from being relatively large, resistance suffered by the clutch operating rocker arm is improved through the curve section, blocking is avoided, smoothness of automatic clutch driving is improved, and comfort during gear shifting operation is guaranteed.

Description

technical field [0001] The invention relates to a shift auxiliary mechanism, an engine and a motorcycle, in particular to an automatic clutch drive mechanism, an engine and a motorcycle. Background technique [0002] The automatic clutch drive mechanism is an important mechanism for engine gear shifting. The clutch is controlled by the clutch control rocker arm installed on the shift shaft. When the driver drives the shift shaft to rotate, the clutch control rocker arm rotates before the transmission drum, thereby realizing automatic Clutch shifting is convenient for the driver to shift gears. Generally, the clutch control rocker arm is rotated and provided with rollers. The rollers are used to cooperate with the profiled line rolling drive of the clutch cam disc on the clutch to realize the reciprocating swing of the clutch cam disc along the circumferential direction. And then realize the separation and combination of the clutch; while the profiles set on the clutch cam di...

AI Technical Summary

Problems solved by technology

[0002] The automatic clutch drive mechanism is an important mechanism for engine gear shifting. The clutch is controlled by the clutch control rocker arm installed on the shift shaft. When the driver drives the shift shaft to rotate, the clutch control rocker arm rotates before the transmission drum, thereby realizing automatic Clutch shifting is convenient for the driver to shift gears. Generally, the clutch control rocker arm is rotated and provided with rollers. The rollers are used to cooperate with the profiled line rolling drive of the clutch cam disc on the clutch to realize the reciprocating swing of the clutch cam disc along the circumferential direction. And then realize the separation and combination of the clutch; while the profiles set on the clutch cam disc in the prior art are two straight lines distributed along the radial direction, but the rollers revolve and rotate at the same time when the clutch control rocker arm rotates, while the rollers At the same time, it is subject to the driving force of the clutch control rocker arm and the resistance of the shape line, resulting in complex force conditions, large driving resistance, and prone to drive jamming, and poor ride comfort; at the same time, the drive stroke of the clutch control rocker arm is relatively large, making the The drive efficiency of clutch cam disc oscillation is low

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