Extension shielding shell assembly, first terminal module and first backplane connector with improved shielding chamber and elastic piece

A first terminal module, comprising:

• an insulating bracket;
• a plurality of first conductive terminals fixed to the insulating bracket, the first conductive terminals comprising a first signal terminal and a second signal terminal;
• each of the first signal terminal and the second signal terminal comprising a first contact portion;
• a first metal shielding plate located on one side of the insulating bracket;
• a second metal shielding plate located on another side of the insulating bracket and disposed opposite to the first metal shielding plate;
• a first shielding sleeve, the first shielding sleeve being at least partially sleeved on the first metal shielding plate and the second metal shielding plate;
• and
• an extension shielding shell assembly, the extension shielding shell assembly comprising:
• a first extension shielding piece;
• a second extension shielding piece disposed opposite to the first extension shielding piece;
• a first connection shielding piece;
• a second connection shielding piece disposed opposite to the first connection shielding piece;
• the first extension shielding piece, the second extension shielding piece, the first connection shielding piece and the second connection shielding piece jointly forming a shielding chamber;
• and
• at least one elastic piece, the at least one elastic piece being fixed to at least one of the first extension shielding piece, the second extension shielding piece, the first connection shielding piece and the second connection shielding piece;
• the at least one elastic piece comprising at least one elastic arm that protrudes into the shielding chamber and is configured to abut against a second backplane connector;
• wherein the extension shielding shell assembly is in contact with the first shielding sleeve;
• the first contact portion of the first signal terminal and the first contact portion of the second signal terminal protrude into the shielding cavity of the extension shielding shell assembly.

A first terminal module, comprising:

• a first cable module, the first cable module comprising a plurality of first conductive terminals and a first cable electrically connected to the first conductive terminals;
• the first conductive terminals comprising a first signal terminal and a second signal terminal;
• each of the first signal terminal and the second signal terminal comprising a first contact portion;
• a first shielding sleeve, the first shielding sleeve being at least partially sleeved on the first cable module;
• the first contact portion of the first signal terminal and the first contact portion of the second signal terminal both extending beyond the first shielding sleeve;
• a first fixing block, the first fixing block being at least partially fixed on the first cable module;
• and
• an extension shielding shell assembly, the extension shielding shell assembly comprising:
• a first extension shielding piece;
• a second extension shielding piece disposed opposite to the first extension shielding piece;
• a first connection shielding piece;
• a second connection shielding piece disposed opposite to the first connection shielding piece;
• the first extension shielding piece, the second extension shielding piece, the first connection shielding piece and the second connection shielding piece jointly forming a shielding chamber;
• and
• at least one elastic piece, the at least one elastic piece being fixed to at least one of the first extension shielding piece, the second extension shielding piece, the first connection shielding piece and the second connection shielding piece;
• the at least one elastic piece comprising at least one elastic arm that protrudes into the shielding chamber and is configured to abut against a second backplane connector;
• wherein the extension shielding shell assembly is in contact with the first shielding sleeve;
• the first contact portion of the first signal terminal and the first contact portion of the second signal terminal protrude into the shielding cavity of the extension shielding shell assembly.