Stepless speed change mechanism

Abstract

The invention discloses a stepless speed change mechanism, and belongs to the technical field of speed changers. The stepless speed change mechanism comprises an input shaft, a first outer gear, a second outer gear, a first mechanism, a second mechanism, a third mechanism, a fourth mechanism, an output shaft and a speed adjusting mechanism; the input shaft is connected with the first outer gear and the first mechanism; the first mechanism is connected with the fourth mechanism; the first outer gear is meshed with the second outer gear; the second outer gear is connected with the third mechanism; the second mechanism is connected with the third mechanism; the first mechanism is connected with the second mechanism; the third mechanism is connected with the fourth mechanism; the output shaftis connected with the fourth mechanism; and the speed adjusting mechanism is connected with the second mechanism and the third mechanism. According to the stepless speed change mechanism, through thecooperation of the gear, the first mechanism, the second mechanism, the third mechanism, the fourth mechanism and the speed adjusting mechanism, stepless speed change of the output end is achieved, neutral gear and reverse gear can be achieved, and the stepless speed change mechanism has the advantages of being simple and reliable in structure, low in manufacturing cost, convenient to maintain, wide in speed regulating range and wide in applicable working condition.

Description

technical field [0001] The invention relates to the technical field of transmissions, in particular to a continuously variable transmission mechanism. Background technique [0002] As the society's requirements for environmental protection are getting higher and higher, electric vehicle technology has become the mainstream research direction of major car companies. Since the working characteristic of the motor is constant torque at low speed, and the torque decreases at high speed, the torque and vehicle speed are only adjusted by adjusting the motor speed. The motor needs to take into account the vehicle's climbing ability and maximum speed, resulting in high energy consumption and low efficiency. At present, the automatic transmission mostly used in electric vehicles still belongs to the stepped transmission, which only realizes automatic gear shifting through electronic control. The disadvantage is that the structure of the transmission mechanism is complicated, the manuf...

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Problems solved by technology

[0003] In order to solve the problems of complex structure, high manufacturing cost and difficult maintenance of existing transmission mechanisms, the present invention provides a continuously variable transmission mechanism, which includes an input shaft, a first external gear, a second external gear, a first mechanism, a second The second mechanism, the third mechanism, the fourth mechanism, the output shaft, the speed regulating mechanism and the connecting shaft; the input shaft is respectively connected with the first external gear and the first mechanism; the first mechanism is connected with the fourth mechanism; the first external gear is connected with the second mechanism The two external gears mesh; the second external gear is connected with the third mechanism; the second mechanism is connected with the third mechanism; the first mechanism is connected with the second mechanism; the third mechanism is connected with the fourth mechanism; the output shaft is connected with the fourth mechanism; The speed regulating mechanism is respectively connected with the second mechanism and the third mechanism

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