Electric AMT gear selecting and shifting mechanism

Abstract

The invention discloses an electric AMT gear selecting and shifting mechanism. The electric AMT gear selecting and shifting mechanism comprises a gear selecting driving motor and a gear shifting driving motor, which are fixed on a housing; the output shaft of the gear selecting driving motor is matched with the head end of a gear selecting lead screw in a transmitting manner through a gear selecting coupler; the output shaft of the gear shifting driving motor is matched with the head end of a gear shifting lead screw in a transmitting manner through a gear shifting coupler; the gear selecting lead screw and the gear shifting lead screw are perpendicular to each other; the gear selecting lead screw is matched with a gear selecting and shifting block in a transmitting manner in the medial axis direction of the gear selecting lead screw through a gear selecting slide block; the gear shifting lead screw is matched with the gear selecting and shifting block in a transmitting manner in the medial axis direction of the gear shifting lead screw. According to the invention, not only the gear selecting and shifting force output by the gear selecting and shifting mechanism can be improved, but also the layout space of the gear selecting and shifting mechanism in the vertical direction can be reduced, and power transfer stability of the gear selecting and shifting mechanism is improved.

Description

technical field [0001] The present invention relates to an automatic shift mechanism, in particular to an electric AMT shift mechanism, which is particularly suitable for increasing the output shift force of the shift mechanism and reducing the layout space of the shift mechanism in the vertical direction , Improve the stability of the power transmission of the gear selection and shifting mechanism. Background technique [0002] AMT automatic transmission (Automated Mechanical Transmission, referred to as AMT) is formed by adding an automatic transmission control system on the basis of a traditional manual transmission. The computer controls the actuator to replace the manpower to complete the operation of gear selection and clutch, so as to realize the automatic shifting operation of the manual transmission. [0003] AMT actuators can be divided into three types: hydraulic, pneumatic and electric. Among them, the hydraulic actuator needs to be equipped with an independent...

AI Technical Summary

Problems solved by technology

[0005] 1. When shifting gears in this invention, the gear shift lever shaft drives the gear shift lever through the gear shift rocker arm, and the gear shift lever receives a parallel moment along the direction of the shift screw, and the torque is affected by the shift lever shaft. Due to length and rigidity constraints, the output shifting force of the shift lever is greatly limited, making it difficult for the invention to be applied to gearboxes with large shifting force

[0006] 2. Only one end of the gear selection screw of this invention is fixed on the gear selection drive motor I, and the gear selection screw is in a cantilever state, so the structural stability is poor; The parallel torque in the direction of the gear screw is also restricted by the length and rigidity of the shift lever shaft, so that the output selection force of the shift lever is greatly limited, making it difficult for the invention to be applied to gears with a relatively large shift force. gearbox

[0007] 3. The invention requires a large layout space in the vertical direction, which makes it difficult for the invention to be applied to vehicles with a small height layout space; and the complex structure of the invention makes it difficult to process and high in tooling costs, which is not conducive to actual production

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