Backplane connector with improved structural strength

1. A backplane connector, comprising:

a housing; and

a plurality of wafers assembled to the housing, each wafers comprising:

a plurality of conductive terminals, each conductive terminal comprising a contact portion and a connection portion connected to the contact portion;

an insulating frame fixed with the connection portions of the conductive terminals, the contact portions extending beyond the insulating frame;

a metal shield disposed at least on one side of the insulating frame;

wherein the housing comprises an insulating housing and a metal shell fixed to the insulating housing, the insulating housing comprises a plurality of slots for positioning the wafers, the metal shell comprises a mating surface and a plurality of terminal receiving grooves extending through the mating surface, and the contact portions of the conductive terminals are exposed in corresponding terminal receiving grooves.

2. The backplane connector according to claim 1 , wherein the insulating housing comprises a frame portion which comprises a first wall portion, a second wall portion opposite to the first wall portion, a third wall portion connecting one side of the first wall portion and the second wall portion, and a fourth wall portion connecting the other side of the first wall portion and the second wall portion; and wherein the first wall portion, the second wall portion, the third wall portion and the fourth wall portion are enclosed to form an opening to receive the metal shell.

3. The backplane connector according to claim 2 , wherein the first wall portion and/or the second wall portion comprise a protrusion block protruding into the opening; and wherein the metal shell comprises a receiving groove to receive the protrusion block.

4. The backplane connector according to claim 2 , wherein the first wall portion comprises a plurality of first locking grooves extending upwardly through the first wall portion, the second wall portion comprises a plurality of second locking grooves extending downwardly through the second wall portion, the insulating frame comprises a plurality of first locking protrusions locked in the first locking grooves and a plurality of second locking protrusions locked in the second locking grooves.

5. The backplane connector according to claim 4 , wherein each slot comprises a first slot disposed on a bottom surface of the first wall portion and a second slot disposed on a top surface of the second wall portion; and

wherein the first slot is in communication with the first locking groove, and the second slot is in communication with the second locking groove.

6. The backplane connector according to claim 2 , wherein the frame portion comprises a front surface which is flush with the mating surface; wherein the first wall portion and/or the second wall portion comprise a positioning protrusion protruding forwardly beyond the front surface; and wherein the positioning protrusion comprises a guiding inclined surface at an end thereof.

7. The backplane connector according to claim 1 , wherein the conductive terminals comprise differential signal terminals, a first ground terminal and a second ground terminal;

wherein the differential signal terminals are located between the first ground terminal and the second ground terminal; wherein the terminal receiving grooves are disposed in multiple rows along a left-right direction, and two adjacent rows of terminal receiving grooves are disposed in a staggered manner in a top-bottom direction; and wherein the contact portions of each group of differential signal terminals are exposed in corresponding terminal receiving grooves.

8. The backplane connector according to claim 7 , wherein the metal shield comprises a first metal shield and a second metal shield; wherein the first metal shield comprises a first extension portion located on one side of the contact portions of the conductive terminals; and wherein the second metal shield comprises a second extension portion located on the other side of the contact portions of the conductive terminals.

9. The backplane connector according to claim 8 , wherein the first extension portion comprises a first bulge protruding toward the first ground terminal and a second bulge protruding toward the second ground terminal;

wherein the second extension portion comprises a third bulge protruding toward the first ground terminal and a fourth bulge protruding toward the second ground terminal; and

wherein the first bulge and the third bulge are in contact with opposite side surfaces of the contact portion of the first ground terminal, respectively; the second bulge and the fourth bulge are in contact with opposite side surfaces of the contact portion of the second ground terminal, respectively; and the first extension portion, the second extension portion, the first ground terminal and the second ground terminal jointly form a shielding space enclosing the contact portions of the differential signal terminals.

10. The backplane connector according to claim 8 , wherein the metal shell comprises an inner surface opposite to the mating surface and a plurality of contact protrusions extending beyond the inner surface in a direction away from the mating surface; the terminal receiving grooves extend through the mating surface and the inner surface; the contact protrusions are disposed opposite to the first ground terminal and the second ground terminal; The first extension portion is electrically connected to one side surfaces of the contact protrusions, and the second extension portion is electrically connected to the other side surfaces of the contact protrusions.

11. The backplane connector according to claim 1 , wherein the metal shell is fixed to the insulating shell by assembling or insert-molding.