Motor

Abstract

A delta-connection three-phase brushless motor having six or more poles is provided with a stator having a plurality of coils, a rotor rotating about the central axis extending in a vertical direction, and a first bus bar, a second bus bar, and a third bus bar to which the lead-out wires of the coils are respectively connected, wherein: the first bus bar has a first connection portion to which twolead-out wires are connected; the second bus bar has a second connection portion to which two lead-out wires are connected; the third bus bar has a third connection portion to which one lead-out wireis connected and a fourth connection portion to which one lead-out wire is connected; and the first and second connection portions are disposed side by side in the circumferential direction and the third and fourth connection portions are disposed sandwiching the first and second connection portions in the circumferential direction.

Description

technical field [0001] This invention relates to motors. Background technique [0002] Conventionally, a motor having a plurality of bus bars is known. For example, in the motor of Patent Document 1, a bus bar is disclosed that Y-Δ connects coils of a plurality of systems. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2013-223295 Contents of the invention [0006] The problem to be solved by the invention [0007] In existing motors, at least four bus bars are required for each system's three-phase circuit for Y-connection. Therefore, in the case of configuring a plurality of three-phase circuits, there is a problem that the arrangement of the bus bars tends to become complicated, and the bus bars overlap each other in the axial direction, thereby increasing the size of the motor in the axial direction. [0008] In view of the above problems, one aspect of the present invention has an object of provi...

AI Technical Summary

Problems solved by technology

Therefore, in the case of configuring a three-phase circuit of a plurality of systems, etc., there is a problem that the arrangement of the bus bars tends to become complicated, and the bus bars overlap each other in the axial direction, thereby increasing the size of the motor in the axial direction.

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