Connection structure of terminal fitting and connection method of terminal fitting

A connection structure of a terminal fitting, comprising:

• a terminal fitting comprising:
• a terminal body;
• and
• a plurality of terminal connection parts extended from the terminal body;
• and
• connection terminals each having a pair of caulking pieces, and each of the connection terminals configured to be connected to an end part of an electric wire,
• wherein in each of the plurality of terminal connection parts of the terminal fitting,
• the connection terminal is caulked to the terminal connection part so that the pair of caulking pieces of the connection terminal enfold outsides of a pair of caulked pieces provided on the terminal connection part in a state that a bottom face between the pair of caulking pieces faces an opening between ends portions of the pair of caulked pieces:
• or
• the connection terminal is caulked to the terminal connection part so that the pair of caulking pieces of the connection terminal enfold outsides of both side sections of the terminal connection part and end portions of the pair of caulking pieces are folded back inward and made contact with each other;
• and
• wherein the terminal fitting is connected to the electric wires through the connection terminals.