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Stator, motor, vehicle, and coil manufacturing method

A coil and stator technology, applied in the field of stator, can solve problems such as poor workability of armature coils, and achieve the effect of easy manufacture and improvement of occupancy rate

Inactive Publication Date: 2020-09-04
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Thus, in the case of the structure of Patent Document 1, although the occupation ratio of the armature coil in the slot can be increased, the workability of winding the armature coil around the stator core is not so good.

Method used

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  • Stator, motor, vehicle, and coil manufacturing method
  • Stator, motor, vehicle, and coil manufacturing method
  • Stator, motor, vehicle, and coil manufacturing method

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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code|symbol is attached|subjected to the same or corresponding part in a figure, and the description is not repeated. In addition, the dimensions of the components in the drawings do not faithfully represent the dimensions of the actual components, the dimensional ratios of the components, and the like.

[0026] In addition, in the following description, the direction parallel to the central axis of the motor is called "axial direction", and the direction perpendicular to the central axis is called "radial direction". The direction of the arc is called "circumferential". However, the definition of the vertical direction is not intended to limit the direction when the motor of the present invention is used.

[0027] In addition, in the following description, expressions such as "fixing", "connecting" and "mounting" (hereinafter referred to...

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Abstract

A stator, a motor, a vehicle, and a method for manufacturing a coil are provided, which can increase occupation rate of coils in slots of the stator core and manufacture is easy. A stator (2) has a stator core (21) and the coils (26) housed in the slots (24) in a radially laminated state. Each coil (26) has: a plurality of straight portions (27); and a curved connecting portion (28) which is samewith the straight portions. The two straight portions (27) outside the slots (24) are connected. The straight portions (27) of the plurality of coils (26) housed in the predetermined slots (24) have concave portions (27a) located outside the coil (26) in the radial direction and convex portions (27b) located outside the coils (26) in the radial direction. The cross-sectional shape of at least a portion of the connecting portion (28) is a shape composed of a curved line without a concave portion.

Description

technical field [0001] The present invention relates to a stator, a motor having the stator, a vehicle on which the motor is mounted, and a coil manufacturing method. Background technique [0002] In order to increase the occupation rate of the plurality of coils housed in the slots of the stator core of the motor, a configuration using flat wire coils having a rectangular cross-section as the coils has been studied. However, coils of flat wires are more expensive than coils of round wires having a circular cross section, and are difficult to bend. [0003] Therefore, a structure in which the coils are squashed in the slots of the stator core to increase the footprint has been studied. As such a configuration, for example, an armature coil disclosed in Patent Document 1 is known. The armature coil of Patent Document 1 is inserted into a slot of a stator core, and has a V-shaped cross-section by a front end portion of a pressing plate pressed into the slot. Thereby, the oc...

Claims

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Application Information

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IPC IPC(8): H02K3/04H02K3/12H02K3/28H02K15/04
CPCH02K3/04H02K3/12H02K3/28H02K15/04H02K15/0414
Inventor 中村雅之
Owner NIDEC CORP