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motor and stator

A motor and stator technology, applied in the field of motors and stators, can solve the problems of long takt time, inability to improve the mass production of motors, and inability to fully realize cost reduction, etc., to achieve shortened takt time, improved mass production, and low cost the effect of

Active Publication Date: 2021-03-05
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In this way, in the technology disclosed in Japanese Laid-Open Publication No. 2006-87278, the movement of the winding nozzle is increased. As a result, the takt time during winding becomes longer, the mass productivity of the motor cannot be improved, and low costing

Method used

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Embodiment Construction

[0041] Embodiments are described below with reference to the drawings.

[0042] In the embodiments, descriptions of configurations or elements other than the main part of the present invention are simplified or omitted for easy understanding of the descriptions. In addition, in the drawings, the size, shape, number, etc. of each element are just examples, and are not intended to be limited thereto.

[0043] In addition, in the following description, an axial direction is defined as the direction in which the rotor (axis) of the motor extends, that is, the direction in which the central axis of the rotor extends. In addition, the radial direction is defined as a direction perpendicular to the central axis of the rotor, and the circumferential direction is defined as a direction surrounding the central axis of the rotor. The circumferential direction is centered on the rotor, and one revolution is 360°.

[0044] In addition, the axial front side is defined as the side where th...

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Abstract

The present invention provides a motor and a stator. The motor includes: a rotor capable of rotating around a central axis; an annular iron core arranged in a circumferential direction surrounding the central axis; and a casing surrounding the rotor and the ring. Shaped core. At least one end of the rotor protrudes from the housing in an axial direction in which the central axis extends. The annular iron core includes: a plurality of core segments; and a plurality of connecting portions that connect the plurality of core segments in a circumferential direction. The plurality of core segments include: a first coil having a first phase; a second coil having a second phase; and a third coil having a third phase. The first coil, the second coil, and the third coil are respectively wound on tooth portions extending in a radial direction perpendicular to the central axis. The winding directions of the first coil and the third coil are both the first winding direction. The winding direction of the second coil is a second winding direction different from the first winding direction.

Description

technical field [0001] The invention relates to a motor and a stator. Background technique [0002] Motors such as a brushless DC (BLDC) motor can be reduced in size and cost by, for example, narrowing the spaces between the plurality of slots, that is, the slots. Here, the tooth space refers to the space between the two tooth portions around which the lead wire is wound. [0003] However, when the slots become narrower, it becomes a problem to increase the speed and improve the quality of the winding process of winding the lead wire around the teeth. This is because, in such a case, as the speed of the operation of the winding nozzle of the winding machine is increased, the vibration of the operation of the winding nozzle increases, and the winding nozzle may come into contact with the stator core. [0004] A straight iron core is effective for solving this problem. The straight core has a core back and a tooth portion extending in a vertical direction relative to the li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/14H02K3/18H02K3/28
CPCH02K1/148H02K3/18H02K3/28
Inventor 连记宏德牧野祐辅
Owner NIDEC CORP