A connector (11, 11A) adapted to be connected to a flexible conductor, the connector comprising: a pushing member (14, 51) having a projection (15, 41); and a contact (13, 31) made of a conductive material and having a projection accommodating portion (13D, 31D) of recess shape into which the projection is to be inserted, wherein the projection accommodating portion (13D, 31D) includes: a protruding portion (13E, 31E) that is situated in an inner surface of the projection accommodating portion with protruding from the inner surface of the projection accommodating portion toward an inside of the projection accommodating portion and approaches a lateral surface of the projection when the projection (15, 41) is inserted into the projection accommodating portion; and a gap forming portion (13F, 31F) that is situated in the inner surface of the projection accommodating portion around the protruding portion and forms a predetermined gap between the gap forming portion and the lateral surface of the projection when the projection is inserted into the projection accommodating portion, the predetermined gap being wider than a distance between the protruding portion and the lateral surface of the projection, wherein when the projection (15, 41) of the pushing member is inserted in the projection accommodating portion (13D, 31D) of the contact together with the flexible conductor with the flexible conductor being sandwiched between the projection and the projection accommodating portion of the contact such that the projection of the pushing member is covered by the flexible conductor, the lateral surface of the projection (15, 41) is configured to press the flexible conductor against the protruding portion (13E, 31E) of the projection accommodating portion to contact the flexible conductor to the protruding portion of the projection accommodating portion, and a redundant portion of the flexible conductor generated upon being inserted into the projection accommodating portion is configured to be received in the predetermined gap, characterized in that the projection (15, 41) is in a shape of a cylindrical column, and wherein the inner surface of the projection accommodating portion (13D, 31D) is in a shape of a cylindrical tube having a central axis (C1, C2), and the projection accommodating portion includes a plurality of the protruding portions (13E, 31E) arranged at equal intervals in a circumferential direction of the inner surface of the projection accommodating portion and a plurality of the gap forming portions (13F, 31F) each formed between every adjacent two of the plurality of the protruding portions. a pushing member (14, 51) having a projection (15, 41); and a contact (13, 31) made of a conductive material and having a projection accommodating portion (13D, 31D) of recess shape into which the projection is to be inserted, wherein the projection accommodating portion (13D, 31D) includes: a protruding portion (13E, 31E) that is situated in an inner surface of the projection accommodating portion with protruding from the inner surface of the projection accommodating portion toward an inside of the projection accommodating portion and approaches a lateral surface of the projection when the projection (15, 41) is inserted into the projection accommodating portion; and a gap forming portion (13F, 31F) that is situated in the inner surface of the projection accommodating portion around the protruding portion and forms a predetermined gap between the gap forming portion and the lateral surface of the projection when the projection is inserted into the projection accommodating portion, the predetermined gap being wider than a distance between the protruding portion and the lateral surface of the projection, wherein when the projection (15, 41) of the pushing member is inserted in the projection accommodating portion (13D, 31D) of the contact together with the flexible conductor with the flexible conductor being sandwiched between the projection and the projection accommodating portion of the contact such that the projection of the pushing member is covered by the flexible conductor, the lateral surface of the projection (15, 41) is configured to press the flexible conductor against the protruding portion (13E, 31E) of the projection accommodating portion to contact the flexible conductor to the protruding portion of the projection accommodating portion, and a redundant portion of the flexible conductor generated upon being inserted into the projection accommodating portion is configured to be received in the predetermined gap, characterized in that the projection (15, 41) is in a shape of a cylindrical column, and wherein the inner surface of the projection accommodating portion (13D, 31D) is in a shape of a cylindrical tube having a central axis (C1, C2), and the projection accommodating portion includes a plurality of the protruding portions (13E, 31E) arranged at equal intervals in a circumferential direction of the inner surface of the projection accommodating portion and a plurality of the gap forming portions (13F, 31F) each formed between every adjacent two of the plurality of the protruding portions.