Electromagnetic boosting type gear shifting mechanism

Abstract

The invention discloses an electromagnetic boosting type gear shifting mechanism. The electromagnetic boosting type gear shifting mechanism comprises a self-locking device, a sliding shifting fork, a guide rail shaft, a first coil mounting rack, first coils, a sector gear, middle coils, a second coil mounting rack, second coils, a locating bearing, an assembly support, an infrared photoelectric reflective sensor and an ECU. When the electromagnetic boosting type gear shifting mechanism is in a neutral gear, the sliding shifting fork is located in the middle position of the guide rail shaft. The ECU controls connection and disconnection of electricity and current conditions of the first coils, the middle coils and the second coils to enable the first coils, the second coils and the middle coils to generate electromagnetic force simultaneously and act on the mounting ends of the middle coils. By means of the lever principle, the rotating arm force of the mounting ends of the middle coils is greater than that of the gear end. Under the energizing action of the sector gear, the sliding shifting fork is made to slide on the guide rail shaft to achieve the gear shifting action. Moreover, when the sliding shifting fork stops sliding, the self-locking device conducts self-locking.

Description

technical field [0001] The invention relates to the field of vehicle shifting mechanisms, in particular to an electromagnetic booster shifting mechanism. Background technique [0002] At present, automatic mechanical transmissions (AMT) generally use electro-hydraulic, electric, and all-electric shift mechanisms, in which electro-hydraulic and electric shift mechanisms use hydraulic energy storage devices to complete gear selection and shift actions through the control of solenoid valves. The disadvantages are large size, complex structure, high manufacturing cost, and power loss during the operation process. However, the all-electric shift mechanism uses an orthogonal two-motor arrangement to complete the gear selection and shift actions. The disadvantage is that it is difficult to control and easily leads to shifting. Stuck phenomenon. [0003] Chinese patent (CN202612594U) discloses an automatic electromagnetic shifting device for an electric vehicle. An electromagnetic ...

AI Technical Summary

Problems solved by technology

[0005] In the above patents, the electromagnetic attraction generated by the coil directly acts on the shift fork, and there is a problem of insufficient shifting force.

Images