Cap

A high-voltage connector, comprising:

• a case having a surface side, a back face side opposite the surface side, and a fastening passageway extending through the case from the surface side to the back face side;
• a fastener inserted into the fastening passageway from the surface side of the case, the fastener having a fastening portion projecting from the back face side of the case for fastening the connector to a mating device, a flange portion abutting against a portion of the surface side around the fastening passageway, a head portion forming an end of the fastener on the surface side of the case and separated from the flange portion, and a neck portion disposed between the head portion and the flange portion and having a smaller diameter than a largest diameter of the head portion;
• and
• a cap including a securing base removably supported on the neck portion, the securing base having a plurality of elastic beams defining a head portion passageway receiving the head portion, the elastic beams are elastically deformed by the head portion during passage of the head portion through the head portion passageway, a hinge portion connected to the securing base, and a covering portion connected to the hinge portion and movable between an open position exposing the head portion and a covering position covering the head portion and overlapping with the securing base.