US Patent 10446986 Electrical connector with additional shielding

A electrical connector includes an insulative elongated housing and first and second metallic shells covering the housing. The housing includes a top surface, a bottom surface, two sides surfaces and a middle surface between the top surface and the bottom surface so as to form a step structure thereof. The primary shell covers the top surface, the bottom surface and two side surfaces, and the secondary shell covers the middle surface and the rear surface which is roughly joined with the middle surface, and further the primary shell on the bottom surface in an overlapped manner so as to avoid any electrical leaking along the front-to-back direction between the primary shell and the secondary shell.