A cover has both ends in an extension direction being connected to an insulating member body. A dividing portion formed in a part of the extension direction divides the cover into a first section and a second section. The first section and the second section come into contact with a spring contact when a male terminal contact portion is inserted between a pair of female terminal contact portions. On contact with the spring contact, the first section and the second section elastically deform at least in an opposing direction.