| 摘要 |
A parking device for a reduction system of an electric vehicle is provided to add a secondary parking gear to an output axis and axis-connect a main parking gear in an input axis so that torque is reduced by gear ratio between a secondary parking gear and a main parking gear. A parking sprag is selectively bound and canceled through the operation of the parking sprag by the manipulation of a gearshift in a parking gear. A parking device for a reduction system of an electric vehicle comprises a inhibitor switch(11), a main parking gear(31), a secondary parking gear(32), a reduction gear(33), a differential gear(34), a parking sprag(12), a shift rod(13), a parking cam(14) and a guide plate(15). The inhibitor switch senses parking, moving back and neutrality. In the main parking gear, an input axis(21) operated with the power source of battery in starting is combined by spline. In the secondary parking gear, an output axis(22) of reduction system is combined by spline. The reduction gear is positioned on the same axis line as the secondary parking gear and shares the output axis. The differential gear is circumscribed with the output axis and delivers the power to a driving wheel. In the parking sprag, one side is flexibly axis-connected with the fixed bearing axis(12a) and the other side is selectively combined in the secondary parking gear. The parking sprag blocks the rotation of the secondary parking gear. The shift rod is transferred in a straight line according to the movement of the gearshift. The parking cam is formed in the shift rod and circulates the parking sprag. The guide plate guides the movement of the shift rod.
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