Gear shifting mechanism of automatic transmission

The utility model discloses an automatic transmission gear shifting mechanism which comprises a shell, a nut is arranged in the shell, the nut is axially positioned through a bearing and can slide along the axis, and an output shaft of a driving motor is connected with the nut through a gear set and drives the nut to rotate around the axis of the nut. A lead screw section is arranged on the shifting fork shaft, the lead screw section is matched with the internal thread of the nut, and the shifting fork shaft is fixedly connected with the shifting fork. The utility model has the advantages that: an operating rod is cancelled, so that corresponding space and related parts can be saved, and the structure is simplified. And the nut is matched with the shifting fork shaft, so that the required space is smaller. The occupied space is small. The torque is amplified through the gear set, the motor requirement and size are reduced, and the mechanism space and cost are saved. 本实用新型公开了一种自动变速器换挡机构，包括壳体，在所述壳体内设置有螺母，所述螺母通过