A linked locking mechanism, comprising: a mounting frame which is provided with two or more mounting positions, each mounting position is provided with a mounting through hole and a clamping body provided along an outer circumferential direction of the mounting through hole, all the mounting through holes are spaced along a same circumferential direction; two or more output assemblies, each of them corresponding to a respective one of the two or more mounting positions, each output assembly includes an output shaft and an output gear which is resiliently disposed on the output shaft such that the output gear is connected to the output shaft in an axially movable manner, one end of the output gear is provided with an engaging body engageable with the clamping body and said one end of the output gear is also provided with a pressing body passing through the mounting through hole, the engaging body is disposed outside the pressing body; and a rotating bracket, which can be rotated relative to the mounting frame, the rotating bracket is provided with a pressure bearing surface that is pressed against the pressing body, wherein the rotating bracket is also provided with at least two arc-shaped embossments provided on the pressure bearing surface, all the arc-shaped embossments are spaced along a same circumferential direction, each arc-shaped embossment includes a guide end, an anti-reverse end, and a mating body provided between the guide end and the anti-reverse end, each output gear can drive the output shaft to rotate only when the respective mating body and the respective pressing body abut, and when in addition the respective engaging body and the respective clamping body are separated from each other. a mounting frame which is provided with two or more mounting positions, each mounting position is provided with a mounting through hole and a clamping body provided along an outer circumferential direction of the mounting through hole, all the mounting through holes are spaced along a same circumferential direction; two or more output assemblies, each of them corresponding to a respective one of the two or more mounting positions, each output assembly includes an output shaft and an output gear which is resiliently disposed on the output shaft such that the output gear is connected to the output shaft in an axially movable manner, one end of the output gear is provided with an engaging body engageable with the clamping body and said one end of the output gear is also provided with a pressing body passing through the mounting through hole, the engaging body is disposed outside the pressing body; and a rotating bracket, which can be rotated relative to the mounting frame, the rotating bracket is provided with a pressure bearing surface that is pressed against the pressing body, wherein the rotating bracket is also provided with at least two arc-shaped embossments provided on the pressure bearing surface, all the arc-shaped embossments are spaced along a same circumferential direction, each arc-shaped embossment includes a guide end, an anti-reverse end, and a mating body provided between the guide end and the anti-reverse end, each output gear can drive the output shaft to rotate only when the respective mating body and the respective pressing body abut, and when in addition the respective engaging body and the respective clamping body are separated from each other.