Linear movement buffering type speed change control mechanism and automatic speed change device

Abstract

The invention provides an automatic speed change device and a linear movement buffering type speed change control mechanism thereof. The linear movement buffering type speed change control mechanism comprises a transmission screw rod fixed to an output shaft of a servo motor, a screw meshed to the transmission screw rod and capable of moving in the direction of the axis of the transmission screw rod, a shifting fork mounted between two buffering springs and capable of being pushed by the two buffering springs to horizontally move, a sensing element arranged on the screw and used for indicating moving distance of the shifting fork, and a gear sensor. A meshing portion and a spring mounting groove which are meshed are formed on the screw, the two buffering springs are mounted in the spring mounting groove which is arranged at the other end opposite to the meshing portion, and when the sensing element is detected, corresponding shifting end signals are given out. The scheme combining embedded computer control with mechanical fault-tolerant technology is adopted, so that shifting comfortability, reliability and practicability are all improved effectively, and the problem of gear shifting of a two-gear-type automatic speed changer is solved.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a linear movement buffer type speed change control mechanism and an automatic speed change device. Background technique [0002] During the "Eighth Five-Year Plan" period, pure electric vehicles were listed as key research and development projects. During the "Ninth Five-Year Plan" period, pure electric vehicles were listed as a major scientific and technological industry project. During the "Tenth Five-Year Plan" period, the "863 Plan" major scientific and technological projects for pure electric vehicles were established. During the "Eleventh Five-Year Plan" period, the "863 Plan" energy-saving and new energy vehicle major projects were established. According to the current national energy development strategy, urban air, environmental protection requirements and the needs of the vast rural market, the research and development, application and promotion of pure electric vehicles...

AI Technical Summary

Problems solved by technology

[0004] At present, compared with foreign countries, domestic pure electric vehicles still have problems such as lack of compact vehicle structure and loose coordination between various assemblies.

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