External reverse gear unit of speed variator for motorcycle engine

Abstract

An external reverse gear unit for the speed variator of motorcycle is composed of a case assemblage for changing the rotational direction of driven axle, a manipulating mechanism installed on case body for driving the driven axle to change its rotational direction, and a reverse gear controlling drive for controlling the said manipulating mechanism. It features that the reverse gear can only be performed at low gear position, that is, reverse gear position "I", resulting in higher safety.

Description

(1) Technical field: [0001] The invention relates to a reverse gear, in particular to an external reverse gear widely applicable to motorcycle engine transmissions with different displacements. (two) background technology: [0002] At present, three-wheeled motorcycles equipped with reverse gears use engines with extended countershafts. Only in this way can the countershafts of the engine be sleeved on the active bevel gears of the reverse gears to rotate, and the reverse gears are fixed with miniature bolts On the engine, after the auxiliary shaft of the engine is lengthened, the bolts will slip due to the vibration of the reverse gear, causing the reverse gear to disengage from the engine to produce abnormal noise and even damage the engine bearings; The left and right sliding of the end face clutch on the driven shaft is respectively clutched and disengaged with the end faces of the bevel gears installed at both ends of the coaxial shaft, so as to realize the reversing of...

AI Technical Summary

Problems solved by technology

[0002] At present, three-wheeled motorcycles equipped with reverse gears use engines with extended countershafts. Only in this way can the countershafts of the engine be sleeved on the active bevel gears of the reverse gears to rotate, and the reverse gears are fixed with miniature bolts On the engine, after the auxiliary shaft of the engine is lengthened, the bolts will slip due to the vibration of the reverse gear, causing the reverse gear to disengage from the engine to produce abnormal noise and even damage the engine bearings; The left and right sliding of the end face clutch on the driven shaft is respectively clutched with the end face of the bevel gear installed at both ends of the coaxial shaft to realize the reversing of the shaft and the movement of the vehicle forward and backward.

Therefore, gear jumping and disengagement are prone to occur, not only the noise is loud, but also the wear and tear of related parts is aggravated. In addition, this kind of internal and external use of sliding type toggle, and no sealing device is provided, which makes it easy for lubricating oil to flow out along the clutch and shaft gap. , once the oil leaks to a certain extent, the bevel gear will run in a non-lubricated state, causing damage. What is more serious is that the existing reverse gear has several forward gears and several reverse gears, so the driver does not pay attention , there will be unexpected traffic accidents

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