Gear selecting and shifting actuator of automatic gearbox

Abstract

The invention relates to a gear selecting and shifting actuator of an automatic gearbox, which comprises a gear selecting motor, a gear shifting motor, a gear selecting screw rod, a gear selecting paddle shifter, a gear shifting gearwheel, a gear shifting gearwheel shaft, a plurality of gear shifting fork shafts and a plurality of gear shifting forks, wherein the gear selecting motor is in driving connection with the gear selecting screw rod, one end of the gear selecting paddle shifter is formed into a driving nut which is sheathed on the gear selecting screw rod, the other end of the gear selecting paddle shifter is in shifting connection with the gear shifting gearwheel, the gear shifting motor is in driving connection with the gear shifting gearwheel shaft, the gear shifting gearwheel which is installed on the gear shifting gearwheel shaft can be rotated together along with the gear shifting gearwheel shaft and can be moved along a straight line in the axis direction of the gear shifting gearwheel shaft, each gear shifting fork shaft is provided with a gear rack in a position corresponding to the gear shifting gearwheel, and the gear shifting forks are respectively installed on the gear shifting fork shafts. The gear selecting and shifting actuator disclosed by the invention has the advantages of simple structure, less space occupation, low manufacturing cost, high driving efficiency and easiness in spatial arrangement of a whole vehicle.

Description

technical field [0001] The invention relates to a gear shifting component of an automobile, in particular to a gear selection actuator of an automatic transmission. Background technique [0002] With the advancement of science and technology, the way automobiles realize shifting has gradually evolved from manual shifting to automatic shifting, and automatic shifting is realized through automatic transmissions. When the automatic transmission realizes automatic shifting, it needs to select the system component of the shift actuator, and its function is to realize the function of automatic shifting. [0003] The gear selection actuator can be divided into two types according to the structure, one is the hydraulic actuator, and the other is the electromechanical actuator. Although the hydraulic actuator has a fast response speed, which is beneficial to the improvement of vehicle comfort and driving performance, the hydraulic energy loss is large and the transmission efficiency...

AI Technical Summary

Problems solved by technology

Although the hydraulic actuator has a fast response speed, which is beneficial to the improvement of vehicle comfort and driving performance, the hydraulic energy loss is large and the transmission efficiency is low, which affects the fuel economy of the vehicle; the traditional electromechanical actuator has high transmission efficiency. The energy loss is small, which is beneficial to the fuel economy of the whole vehicle, but the response speed is slow, which is not conducive to the improvement of the comfort and driving performance of the vehicle, and the structure is complex, takes up a large space, high manufacturing cost, and is not conducive to the layout of the vehicle, etc.

[0004] The electromechanical gear selection and shifting actuators used in existing automatic transmissions need to pass through two or more stages of transmission before the driving torque of the motor can be transmitted to the shift fork. The structure is complex, it takes up a lot of space, and the cost is high. , the space layout of the vehicle is difficult

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