Swage fastening structure, fastening part structure, and image forming apparatus

A swage fastening structure comprising:

• a first plate member;
• and
• a second plate member, wherein
• the first plate member includes a plate main body and a T-shaped swaging piece formed to project from the plate main body in a direction extending along a plane of the plate main body,
• the second plate member includes a fastening hole through which the swaging piece passes,
• the swage fastening structure fastens the first and second plate members by swaging the swaging piece in a state where the swaging piece has passed through the fastening hole,
• the swaging piece includes:
• a shaft portion projecting from the plate main body in a projecting direction in which the swaging piece projects;
• and
• a pair of holding pieces that is formed to be continuous with the shaft portion at a part of the shaft portion away from the plate main body and to project from the shaft portion in both intersecting directions intersecting the projecting direction, and holds the second plate member between the plate main body and thereof,
• the pair of holding pieces is configured such that an end surface of each holding piece close to the plate main body is inclined in a direction of gradually getting away from the plate main body from one end close to the shaft portion to the other end thereof, and is formed such that a dimension between the plate main body and one end of the end surface close to the shaft portion is smaller than a plate thickness of the second plate member and a dimension between the plate main body and the other end of the end surface is larger than the plate thickness of the second plate member, and
• in a state where the swaging piece has passed through the fastening hole, the shaft portion is twisted about the shaft portion so that the shaft portion is plastically deformed, thereby the swaging piece is swaged with respect to the fastening hole, and the first plate member and the second plate member are fastened.