Electrical connector

An electrical connector which can be coupled with a mating connector inserted from a tip side thereof, comprising:

• a pair of contact pins;
• and
• an insulating housing for containing the pair of contact pins therein in a state that the pair of contact pins are insulated from each other;
• wherein each of the pair of contact pins includes a horizontally extending portion which is located in the housing and linearly extends in an insertion and extraction direction of the mating connector,
• wherein the horizontally extending portion has a pair of surfaces facing each other,
• wherein the housing includes:
• a cylindrical portion which linearly extends in the insertion and extraction direction of the mating connector and contains the horizontally extending portions of the pair of contact pins therein, and
• a pair of rectangular insertion holes which pass through the cylindrical portion in the insertion and extraction direction of the mating connector and into which the horizontally extending portions of the pair of contact pins are respectively inserted,
• wherein each of the pair of insertion holes includes:
• a first wall surface which faces one surface of the pair of surfaces of the horizontally extending portion,
• a second wall surface which faces another surface of the pair of surfaces of the horizontally extending portion, and
• a flat receiving portion which is formed on the first wall surface, and
• wherein the second wall surface of the insertion hole presses the other surface of the horizontally extending portion of the contact pin corresponding to the insertion hole toward an inner side of the insertion hole, thereby pressing the contact pin corresponding to the insertion hole onto the receiving portion of the insertion hole.