Rotary button lock

The utility model relates to a rotary button lock which comprises a lock seat, a driving piece arranged on the lock seat, a swing arm, a sliding block, a support and a pressing head, a driving inserting hole is formed in one side of the lock seat, a sliding groove is formed in the other side of the lock seat, the driving piece is sleeved with the driving inserting hole, the sliding block is installed in the sliding groove, and one end of the swing arm is connected with the driving piece. The other end of the support is hinged to one end of the sliding block through a connecting rod, the support is bent, one end of the support is hinged to the lock seat, a guide groove is formed in the middle of the support, the other end of the support is connected with the pressing head, a shifting pin isarranged at the other end of the sliding block, and the end of the shifting pin extends into the guide groove. The driving piece comprises a shaft shell and an ejector rod, the shaft shell is sleevedwith the driving insertin