Structure of electrical connection portion, rotor and motor that apply same structure, and method for forming electrical connection portion

A motor, comprising:

• a terminal;
• a current-carrying component;
• a winding wire;
• and
• a structure of an electrical connector,
• wherein the terminal of the current-carrying component and the winding wire are coupled with the structure of the electrical connector,
• wherein the terminal includes:
• a lock positioned on a base end side;
• and
• a fusion portion positioned on a distal end side,
• the winding wire includes:
• a binder wound around the lock, the binder comprising one end coupled to a molten ball generated at the fusion portion;
• and
• a coupling wire tightly stretched from a main winding wire of the motor disposed in a wound state and continuous to the other end of the binder, and
• the one end of the binder is in a state where tension pulling the coupling wire to the main winding wire side does not act, and
• wherein the binder after the thermal bonding is in a state in which a bearing power is acting to retain the wound state to the lock, the bearing power being larger than the tension.

A method for forming an electrical connection portion of a terminal of a current-carrying component and a winding wire, the current-carrying component including the terminal with a lock portion on a base end side and a fusion portion on a distal end side, the terminal being thermally bonded to the winding wire of a motor, the method comprising:

• a winding of disposing a main winding wire portion, a first winding wire portion, and a second winding wire portion of the motor, the winding wire being in a wound state at the main winding wire portion, the winding wire being wound around the lock portion via a coupling wire portion with the main winding wire portion at the first winding wire portion, the winding wire being wound around the fusion portion continuous with the first winding wire portion at the second winding wire portion;
• and
• a bonding of melting the fusion portion to thermally bond the fusion portion to the second winding wire portion concurrently with or after the winding, wherein:
• the winding winds the winding wire such that a bearing power of the first winding wire portion to the lock portion becomes larger than a tension pulling the coupling wire portion to the main winding wire portion side, and
• the bonding terminates the thermal bonding maintaining a state of the bearing power being larger than the tension.