The invention relates to a connector
assembly and a plug and socket locking connection structure. The connector
assembly comprises a plug, a socket and a locking connection structure for locking the plug and the socket, the locking connection structure comprises a locking
wrench, the locking
wrench has a locking position and an unlocking position in the rotating process, a locking
cam is arranged at the position of the rotating axis of the locking
wrench, the locking connection structure further comprises a locking arm, a locking groove is formed in the locking arm, and the locking arm is connected with the locking
cam. The locking groove is a closing groove; when the locking wrench is located at the unlocking position, the locking
cam can enter the locking groove from the notch, and when the locking wrench is located at the locking position, the locking cam cannot be separated from the locking groove in the
insertion direction, and locking of the plug and the socket is achieved. As the locking cam is arranged at the position of the rotating axis of the locking wrench, the size of the locking wrench in the inserting direction when the locking wrench is located at the locking position can be effectively reduced, the space occupied by the connector
assembly in the inserting direction is reduced, and the requirement for installation
miniaturization of the
servo motor can be met.