Receptacle connector, plug connector and connector assembly

A receptacle connector which is fitted to either of a plug connector having a first fitting section and a plug connector having a second fitting section different in shape from the first fitting section along a same fitting axis, comprising:

• a receptacle shell in which a first reception section for receiving the first fitting section and a second reception section for receiving the second fitting section are formed to overlap at least partly with each other;
• and
• a receptacle contact array A and a receptacle contact array B, both having a plurality of contact portions that are arranged in a region of the receptacle shell where the first reception section and the second reception section overlap with each other,
• wherein the plurality of contact portions of the receptacle contact array A and the plurality of contact portions of the receptacle contact array B face in opposite directions to each other,
• wherein when the plug connector having the first fitting section is fitted to the receptacle connector, at least the plurality of contact portions of the receptacle contact array B out of the plurality of contact portions of the receptacle contact array A and the plurality of contact portions of the receptacle contact array B are connected to the plug connector having the first fitting section, and when the plug connector having the second fitting section is fitted to the receptacle connector, the plurality of contact portions of the receptacle contact array A are connected to the plug connector having the second fitting section,
• wherein the receptacle contact array A and the receptacle contact array B are arranged to overlap with each other with a predetermined space therebetween in a direction perpendicular to their arrangement directions, and the plurality of contact portions of the receptacle contact array A and the plurality of contact portions of the receptacle contact array B are arranged at a same position in the fitting axis direction, and
• wherein the receptacle shell includes a convex section in which a part of the receptacle shell facing the receptacle contact array B swells in a direction perpendicular to an arrangement direction of the plurality of receptacle contacts, and a part of the first reception section is formed in the convex section.