Power transmission device for vehicle

Abstract

Easy and precise shifting is possible without using a shift pedal and a shift lever. The vehicle power transmission device is equipped with a speed changer installed between the engine and the driving wheels, a speed change clutch, and a motor that can control the forward and reverse rotation of the speed change clutch according to the command signal issued by the operating member operated by the driver. , which is characterized in that the motor is driven with a power ratio of 100% when the clutch is disconnected, the rotation angle of the motor is feedback controlled when the clutch is connected, and the speed of disconnecting the clutch is controlled so that the motor is driven outside the clutch connection area, at least when the clutch is connected The speed in the area is lower than that, so that the connection speed of the transmission clutch is slower than the speed of disconnection; the transmission is equipped with a gear set that can establish multiple gear stages, a shift fork that changes the meshing of the gear set, and a shift roller that drives the shift fork 1. Drive the transmission shaft of the transmission drum, the transmission clutch is connected and disconnected according to the rotation of the transmission shaft, and the motor is feedback-controlled according to the signal sent by the rotation phase detection mechanism.

Description

technical field [0001] The present invention relates to a vehicle power transmission device equipped with a transmission and a transmission clutch. The above-mentioned transmission is provided between the engine and the drive wheel, and the above-mentioned transmission clutch is provided between the driving source and the transmission. Background technique [0002] Generally, a saddle-type vehicle is equipped with a power unit in which an engine and a transmission are integrated, and the driver operates a shift pedal provided on the side of the transmission with his feet to change gears. [0003] An electric vehicle in which gears are shifted by intermittently rotating a transmission drum of a transmission by a motor is known from JP-A-5-39865. [0004] However, in the above-mentioned existing transmission mechanism using a shift pedal, because the driver operates the shift pedal with his feet, he must be very skilled when changing gears extremely quickly, and even a skille...

AI Technical Summary

Problems solved by technology

Not only does it complicate the control, but it also requires a idling mechanism to prevent excessive load from being applied to the motor for gear shifting when the gear shifting drum cannot rotate smoothly.

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