Clutchless automatic transmission

Abstract

The invention discloses a clutchless automatic transmission comprising two transmission shafts and a plurality of pairs of shift gears. Each pair of the shift gears comprises a movable gear and a fixed gear; the movable gear is hollowly sleeved in one transmission shaft and is connected with the transmission shaft through a synchronizing device; the fixed gear is fixedly arranged on the other transmission shaft; the end part of each movable gear is fixedly connected with one synchronizing wheel; the synchronizing wheel comprises a combining part and an outer thread is arranged on the outer circumference of the combining part; a synchronizing slide sleeve is connected with the transmission shaft through a spline and the end part of the synchronizing slide sleeve is provided with a combining groove; the combining groove is internally provided with an inner thread; and when the synchronizing slide sleeve slides along the transmission shaft, the combining part of the synchronizing wheel is inserted into the combining grrove of the synchronizing slide sleeve and is connected with the combining part of the synchronizing slide sleeve through a thread. The clutchless automatic transmission has a simple and compact structure; in a gear shifting process, no power interruption is needed and the clutchless automatic transmission is very rapid and stable; the gear shifting loss is lowered and the whole performance is improved; and the riding comfort is extremely improved and the service life of parts is effectively prolonged.

Description

technical field [0001] The invention relates to a transmission, in particular to a clutchless automatic control shift transmission. Background technique [0002] With the development of new energy technology, whether it is a pure electric vehicle or a hybrid vehicle, the motor is used more and more widely as the driving power of the vehicle. Compared with the traditional internal combustion engine, the motor drive has the characteristics of large torque at low speed, smooth change of output torque with speed, and small change of high-speed power. In order to adapt to this dynamic characteristic, how to smoothly and efficiently couple the power of the motor into the mechanical transmission system has become an urgent and core issue in the field of new energy. [0003] Chinese invention patent application CN1974262A discloses a clutchless transmission system for a motor-driven car, including a manual transmission system and an automatic transmission system, which includes: a ...

AI Technical Summary

Problems solved by technology

[0005] However, the clutchless transmission systems disclosed in the above two patent applications only involve the shift control system and control method. How to improve the mechanical structure of the existing transmission to meet the requirements of clutchless shifting is still a technical problem to be solved.

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