Motor and method of manufacturing the same

Abstract

The invention relates to a motor and a method of manufacturing the same. The motor includes a rotor having a shaft which has its center on a center axis extending in one direction; a stator which surrounds the rotor in the axial circumference, and includes a plurality of coils; and bus bars connecting coil ends extending from the coils. The bus bars may include a plate shape member bent in a thickness direction, a width direction of the bus bars being identical to an axial direction of the motor. Each of the bus bars may include a main body portion, and a coil end connection portion which extends from the main body portion and grips one of the coil ends at an opening that is open toward one direction within a plane perpendicular to the axial direction.

Description

technical field [0001] The present invention relates to a motor and a method of manufacturing the motor. Background technique [0002] There is known a motor having bus bars for wiring the coil ends at any position. [0003] Japanese Patent No. 3650372 describes a connecting conductor having a coil connection terminal portion formed by bending a lead wire. The coil connection terminal portion of the connecting conductor is a linear wire that protrudes outward and is folded back, and the folded and returned linear wires are welded to each other. [0004] Japanese Laid-Open Patent Publication No. 2010-11690 describes a splice coil in which two linear conductors are overlapped. The connecting coil has a connecting portion connected to the winding end of the stator coil, and the connecting portion is formed by bending two linear conductors to be connected while sandwiching the winding end. [0005] There is a problem that the connection conductors described in Japanese Patent...

AI Technical Summary

Problems solved by technology

[0005] There is a problem that the connection conductors described in Japanese Patent No. 3650372 are arranged in such a way that the respective connection conductors formed by bending the lead wires are arranged in the grooves of the connection conductor holder so that the coil connection terminals face outward in the radial direction. In order to weld the part where the two lead wires are arranged and the lead wires are not expanded, the connecting conductor holder that becomes deeper in the radial direction requires a welding process in the manufacturing method, which increases the manufacturing cost

[0006] In addition, since the terminal coil described in Japanese Laid-Open Patent No. 2010-11690 is easy to form the terminal coil, two linear conductors are required for one terminal part, so the number of parts increases and the problem of high manufacturing cost arises.

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