Female Terminal Fitting

A female terminal fitting comprising:

• a female terminal main body having a terminal fitting unit with a quadrangular tube shape, into which a contact flat plate section of a male terminal fitting is inserted as a connection counterpart;
• and
• a terminal contact spring member which is mounted on the terminal fitting unit in a state of being in contact with an inner surface of the female terminal main body,
• wherein the terminal contact spring member includes:
• a first frame having substantially a quadrangular shape which is inscribed in a front end portion of the terminal fitting unit as an insertion side of the contact flat plate section,
• a second frame having substantially a quadrangular shape which is inscribed in a rear end portion of the terminal fitting unit,
• a first flat spring which straddles over first facing walls of the first frame and the second frame which face one surface of the contact flat plate section which is inserted into the terminal fitting unit, and comes into elastic contact with the one surface of the contact flat plate section, and
• a second flat spring which straddles over second facing walls of the first frame and the second frame which face the other surface of the contact flat plate section which is inserted into the terminal fitting unit, and comes into elastic contact with the other surface of the contact flat plate section, and
• wherein a height dimension of side wall sections of the first frame and the second frame in a sheet thickness direction of the contact flat plate section before being mounted is greater than an inner height dimension of the terminal fitting unit corresponding thereto, and
• a curved shape portion, which enables the height dimension of the side wall sections to extend and contract in the height direction, is provided on the side wall section.