Crimp terminal and terminal crimping device

A terminal crimping device comprising:

• a terminal supplying device that transfers a crimp terminal to a crimping position at which the crimp terminal is crimped to an electric wire;
• a crimping device that crimps the crimp terminal transferred to the crimping position to an end of the electric wire using a first die and a second die;
• and
• a driving device that reduces a gap between the first die and the second die during crimping process and increases the gap between the first die and the second die after the crimping process is completed, wherein
• the crimp terminal includes a terminal connecting portion electrically connected to a counterpart terminal, an electric wire connecting portion electrically connected to the end of the electric wire placed on an inner wall surface side by the crimping process, and a coupling portion that couples the terminal connecting portion and the electric wire connecting portion,
• the electric wire connecting portion is divided into a bottom placed on a recessed surface of the first die and on which the end of the electric wire is placed during the crimping process, a first barrel piece extending from a first end of the bottom and wound around the end of the electric wire, and a second barrel piece extending from a second end of the bottom and wound around the end of the electric wire, and
• the bottom has, in an area on which a core wire at a distal end of the electric wire is placed, a recess formed on an outer wall surface on the recessed surface side and into which a protrusion formed on the recessed surface is inserted during the crimping process, and a protrusion on the inner wall surface formed along with formation of the recess.