Patent ID: 7211729

Claim:
An improved jack structure, comprising: a main body having a fillister formed at a center portion thereof, two jack holes formed at an upper portion thereof and two insertion holes formed at a lower portion thereof, the fillister having two connection axis holes formed therein and an insertion slot formed at a lower portion thereof, the two jack holes, the two insertion holes and the fillister being open to one another; a cover plate having two connection holes formed at an upper portion thereof and disposed within the fillister of the main body in such a manner that the connection holes are aligned to the connection axis holes; two protective covers each having a rotation axis disposed at a corresponding one of two sides thereof, a protruding post at one of the two sides, an urging portion at a front side thereof, and a protrusion at a lower portion thereof, wherein each protective cover is connected pivotally through the respective rotation axis at a first position to one of the connection axis holes of the main body and at a second position to one of the connection holes of the cover plate, and wherein a spring is respectively disposed at the first position, the spring having an end sleeving on the respective protruding post of the protective post; a lock piece having two urging bumps extending horizontally thereon and inserting the insertion slot of the main body at a lower end; and two conductive pieces each having a mating bump disposed thereon through which each conductive piece is fixed within the main body when inserted into the main body.