Backplane connector with guiding elements

A backplane connector comprising:

• a housing having a top, a bottom and an expansion slot defined in the top of the housing;
• and
• multiple terminal assemblies mounted in the bottom of the housing and each terminal assembly having
• a first insulating base and a second insulating base connected to each other and mounted in the bottom of the housing;
• and
• two pairs of signal transmission terminals mounted respectively through the first insulating base and the second insulating base, the signal transmission terminals of each pair arranged symmetrically and each of the signal transmission terminals having
• a first mounting section mounted on one of the first insulating base or the second insulating base;
• a first resilient arm formed on and protruding upward from the first mounting section;
• a first contacting section formed on and protruding upward from the first resilient arm and having
• an inner side, wherein the inner sides of the first contacting sections of the signal transmission terminals of each pair are opposite and face each other;
• a curved guiding element formed on the inner side;
• and
• an angled protruding element formed on the inner side and disposed under and adjacent to the curved guiding element;
• a first soldering section formed on and protruding downward from first mounting section and extending out of the bottom of the housing,
• wherein the housing further has two pressing bars formed longitudinally in the expansion slot and are arranged symmetrically to each other;
• the first contacting section of each signal transmission terminal further has a first abutting section formed on and protruding upward from the first contacting section and tightly abutting one of the pressing bars of the housing;
• and
• a second contacting section of a grounding terminal mounted through a mounting slot of the housing, further has a second abutting section formed on and protruding upward from the second contacting section and tightly abutting one of the pressing bars of the housing,
• wherein the first abutting section is L-shaped, and the second abutting section is L-shaped,
• wherein the curved guiding elements of the signal transmission terminals are convex and a curved guiding element of the grounding terminal is convex, and
• wherein the first soldering sections of the signal transmission terminals of each terminal assembly are arranged in a single transverse row relative to the housing.