Built-in motor driving lock body

The utility model relates to the technical field of locks, in particular to a built-in motor driving lock body, which is characterized in that a power output tooth is meshed with a transmission rack tooth group, the transmission rack tooth group is screwed in a lock shell, the transmission rack tooth group is meshed with teeth at one end of a rack transmission strip, and the other end of the rack transmission strip is connected with a rack transmission strip power transmission rivet; the rear end of the rack transmission strip power transmission rivet penetrates through a strip-shaped hole in the main board starting pull plate and then is movably clamped with the bottom of a locking piece movably arranged on the back face of the main board starting pull plate. The other end of the main plate starting pull plate is sleeved with a main plate starting pull plate power transmission rivet and a latch bolt starting power transmission rivet which are fixed to the front face of a spring bolt set plate starting rocker