Cable assembly with insert-molded lead-frame assembly
A cable assembly includes a cable module including a first metallic strip integrally formed with an insulative bar via a first insert-molding process; and a second metallic strip integrally formed with the insulative bar via a second-molding process following the first insert-molding process. The second metallic strip includes plural pairs of contacts originally connected thereto via corresponding linking portions. The insulative bar forms a plurality of openings and the first metallic strip forms a plurality of corresponding punching openings respectively aligned with each other and further aligned with the corresponding linking portions, respectively, in a transverse direction so as to remove the corresponding linking portions after the second insert-molding process.
1. A cable assembly comprising:
an organizer;
a first cable module and a second cable module stacked with each other in a transverse direction and received within the organizer, each of the first and second cable modules comprising:
an insulative bar defining a plurality of projecting portions and recesses at a front side thereof in a transverse direction and alternately arranged along a longitudinal direction perpendicular to the transverse direction;
a front grounding bar embedded with the insulative bar and exposed upon the projecting portions and the recesses at the front side;
pairs of contacts embedded with the insulative bar, each of the projecting portions and the recesses exposed with one pair of contacts, each contact comprising a mounting leg extending downward from the insulative bar; and
a plurality of differential-pair wires each having an inner conductor mechanically and electrically connected to a corresponding contact, and a metallic braiding layer mechanically and electrically connected to the front grounding bar;
wherein the insulative bar of the first cable module further defines a plurality of projecting portions and recesses at a rear side thereof in the transverse direction and alternately arranged in the longitudinal direction, and the projecting portions and the recesses of the second cable module match with the corresponding recesses and projecting portions at the rear side of the first cable module.
2. The cable assembly as claimed in claim 1 , wherein the first cable module further comprises a rear grounding bar embedded with the insulative bar and exposed upon the projecting portions and the recesses at the rear side thereof, and the rear grounding bar is mechanically and electrically connected to the corresponding metallic braiding layer of the differential-pair wires of the second cable module.
3. The cable assembly as claimed in claim 2 , further comprising:
an assisting bar having a plurality of projecting portions and recesses at a rear side thereof in the transverse direction; and
a rear grounding bar embedded in the assisting bar and exposed upon the projecting portions and recesses thereof, and wherein
the projecting portions and the recesses of the assisting bar match with the corresponding recesses and projecting portions at the front side of the first cable module, and
the rear grounding bar on the assisting bar is mechanically and electrically connected to the corresponding metallic braiding layers of the differential-pair wires of the first cable module.
4. The cable assembly as claimed in claim 3 , wherein the rear grounding bars in the first cable module and the assisting bar define spring tabs exposed upon the projecting portions and the recesses and touch the corresponding metallic braiding layers of the differential-pair wires.
5. The cable assembly as claimed in claim 1 , wherein in each of the first and second cable modules, the contacts are originally connected to the front grounding bar via linking portions, respectively, and then the corresponding linking portions are removed after the front grounding bar is embedded in the insulative bar.
6. The cable assembly as claimed in claim 1 , further comprising a printed circuit board, wherein the mounting legs of the contacts extend into corresponding holes in the printed circuit board, and the front ground bar further comprises a plurality of grounding legs extending into the corresponding holes of the printed circuit board.