Patent ID: 8499183

Claim:
A plug assembly adapted to an adapter and a computer device, comprising: a first plug comprising a main body being substantially a spherical structure whereon a first positive electrode, a first negative electrode and a first engaging portion are formed; wherein the first engaging portion is a ring-shaped recess surrounding to the surface of the spherical structure; and a second plug having a chamber structure being substantially a spherical chamber structure for containing the main body, a second positive electrode, a second negative electrode coupled to a grounding end, and a second engaging portion being formed on the chamber structure and respectively located in positions corresponding to the first positive electrode, the first negative electrode and the first engaging structure, the second positive electrode and the second negative electrode being respectively coupled to the first positive electrode and the first negative electrode, wherein the second engaging portion is a ring-shaped protrusion, and the spherical structure guides the ring-shaped protrusion to engage the ring-shaped recess when the spherical structure is inserted into the chamber structure, such that the main body is held inside the chamber structure as the chamber structure completely contains the main body; wherein one of the first engaging portion and the second engaging portion is a hook structure, and the other one of the first engaging portion and the second engaging portion is a slot structure; wherein one of the first plug and the second plug is coupled to the adapter, and the other one of the first plug and the second plug is coupled to the computer device.