Transmission mechanism with border-crossing protection function, and financial equipment

The invention discloses a transmission mechanism with a border-crossing protection function, and financial equipment. The transmission structure comprises a rack capable of moving in a reciprocating mode, a gear used for driving the rack to move in the reciprocating mode, and a protection unit used for preventing the gear from crossing the rack; the rack comprises a transmission part and a borderpart connected to the end of the transmission part; the protection unit comprises a moving device and a detection device, and the moving device is at least partially overlapped with the border part ofthe rack and moves in a reciprocating mode along with the rack; and the gear is engaged with the border part, and meanwhile makes contact with the moving device and drives the moving device to move,and the detection device is used for detecting the moving device which makes contact with the gear and then moves so as to issue a trigger command which changes the motion state of the gear. The transmission mechanism with the