Brushless motor and method of manufacturing the brushless motor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsShigeru Yoshida, Kodo Fukuoka, Masafumi Kumoi, Koji Kuyama
Life of this patent
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Abstract
A brushless motor, comprising a rotor having a magnet, a coil for generating a magnetic field for drivingly rotating the rotor, and a power supply terminal for supplying a power to the coil from outside, wherein all electrical connection parts ranging from the power supply terminal to the end of the coil are connected to each other through welded parts.
Claims15
A brushless motor, comprising:
- a rotor having a magnet;
- a coil for generating a magnetic field for rotatively driving the rotor;
- and
- a power supply terminal for supplying a power to the coil from outside,
- wherein all electrical connection portions ranging from the power supply terminal to an end of the coil are joined by welding.
A brushless motor, comprising:
- a rotor having a magnet;
- a coil for generating a magnetic field for rotatively driving the rotor;
- a core for winding the coil;
- and
- a plurality of power supply terminals composed of metallic members,
- wherein
- the core has a ring part and a plurality of salient poles extending radially from the ring part, the coil being wound around the salient pole,
- each terminal has a metal exposure surface for connecting an earth electrode for welding, and
- an end of the coil is connected to the terminal by winding and then the end is joined by arc welding.
A method of manufacturing a brushless motor, characterized by comprising the steps of:
- winding a coil around a core;
- connecting an end, of the coil to a terminal by winding, the terminal being composed of a metallic member;
- connecting an earth electrode for welding to a metal exposure surface of the terminal;
- and
- joining by arc welding a portion on which the end of the coil is connected to the terminal by winding.
A method of manufacturing a brushless motor, characterized by comprising the steps of:
- arranging a plurality of terminals radially and connecting the terminals via a connecting member;
- overlaying the terminal on a surface of a salient pole on a core having a ring part and a plurality of the salient poles extending radially from the ring part;
- winding a coil so as to bind the salient pole and the terminal;
- connecting an end of the coil to the terminal by winding;
- connecting an earth electrode to the connecting member and joining by arc welding a portion on which the end of the coil is connected to the terminal by winding;
- and
- cutting and removing the connecting member.
Dependencies are inferred from the claim text.