Abstract: The present invention discloses a male plug mechanism, a female socket mechanism and a circular connector using same. In the present invention, the male plug shell assembly is arranged to protect the male plug terminal assembly and prevent damage to the male plug terminal assembly, and the outer shell is connected with an outer side of the inner shell through the clamping member to prevent circumferential deviation of the outer shell relative to the inner shell, so that the male plug mechanism is easy to align with the female socket mechanism during use, and the outer shell will not be moved axially in vibration and other environments, having a good stability of connection with the inner shell and the female socket mechanism.

Abstract: The present invention discloses a terminal assembly, a female socket mechanism, a male plug mechanism and a circular connector using same. The terminal assembly comprises an insulator and terminal bodies arranged on an outer circumferential wall of the insulator. When the present invention is used, by assembling the terminal bodies on the outer circumferential wall of the insulator, assembly cost is reduced, and at the same time, assembly space of the terminal bodies on the insulator is expanded, so that the terminal assembly has a smaller size and a wider application range.