Self-suction tail door lock assembly

The invention provides a self-suction tail door lock assembly. The self-suction tail door lock assembly includes a shell, a lock body, a self-suction locking mechanism and an electric unlocking mechanism, wherein the lock body is arranged in the shell, the self-suction locking mechanism is arranged in the shell and used for locking the lock body, and the electric unlocking mechanism is arranged inthe shell and used for unlocking the lock body. The lock body includes a ratchet wheel, a pawl and a lock pin, and the pawl meshes and locks with the ratchet wheel. A first supporting shaft and a second supporting shaft are arranged in the shell, the first supporting shaft is sleeved with the ratchet wheel, the second supporting shaft is sleeved with the pawl, the first supporting shaft is further sleeved with a ratchet wheel resetting torsional spring, one end of the ratchet wheel resetting torsional spring is connected with the ratchet wheel. The first supporting shaft is further sleeved with a pawl resetting torsi