Gear choosing and gear shifting device for vehicle

Abstract

Gear-shift mechanism for motor vehicle. Through transition gear unit with linear / rotation transform function, connect one end of gear-shift mechanism bar of to-and-fro movement and / or sway around the shaft of the long shaft axis to eccentric sway part of eccentric sway unit drove by driver; when sway range is on limit place, the acute included angle between radial direction of eccentric connection part and linear motion direction of transition gear unit is 0~30Deg. As location with high precision, this device can compensate the error of auto executive mechanism from electron and electric apparatus, fits and satisfies the position request for high precision.

Description

technical field [0001] The invention relates to a gear selection and shifting device of a motor vehicle, in particular to a gear selection and shifting device in an automatic control vehicle transmission. Background technique [0002] The gear shifting device in the current motor vehicle transmission gear shifting technology includes two mechanisms of gear selection and gear shifting. These two mechanisms are operated by a shift fork fixedly connected to the selector shift lever that can reciprocate in the axial direction and / or rotate and swing around the axis. When the selector shift lever rotates, the shift fork selects the Corresponding to the shifting groove on the gear slide rod, a gear selection action is completed; when the shift lever is moved in the axial direction, the shift fork drives the slide rod to move through the shifting groove to complete a gear shifting action. Depending on the configuration of the internal structure of the transmission, there may also ...

AI Technical Summary

Problems solved by technology

It can be understood from the general mechanical principle that the pin mentioned above can only be a cylindrical pin, and can only be in a line contact relationship with the shift fork. Resulting in increased friction travel between the pin and the fork, which is not conducive to the working life of the mechanism

[0007] The Chinese patent literature with the notification number CN2323999Y also discloses a "vehicle automatic gear shift controller", in which an eccentric slider is fixedly connected to one end of the gear selection lever, and the slider is embedded in a groove of a circular cam , through the rotation of the cam to drive the axial rotation and movement of the gear selection lever, so as to realize the automatic operation of the gear selection, although the error formed by the actuator in the gear shifting can be obtained, but because it acts on the gear selection shaft The selection and shifting force is a kind of component force. Under heavy load conditions, the useless component force in a certain direction is applied to the transmission case and the selection and shifting lever, causing wear between the two, thus affecting the transmission gear. The meshing accuracy is not good, so the load characteristics of the shifting process are not good

Images