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Apparatus and method for shaping electric wire for stator coil of electric rotating machine

A technology for rotating electrical machines and stator coils, applied in electromechanical devices, manufacturing motor generators, electrical components, etc., can solve the problems of reducing the torque of rotating electrical machines and not being able to provide sufficient current with wires

Active Publication Date: 2010-10-13
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, sufficient current cannot be supplied to the wires, reducing the torque of the rotating electrical machine

Method used

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  • Apparatus and method for shaping electric wire for stator coil of electric rotating machine
  • Apparatus and method for shaping electric wire for stator coil of electric rotating machine
  • Apparatus and method for shaping electric wire for stator coil of electric rotating machine

Examples

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Comparison scheme
Effect test

Deformed example 1

[0106] In the above-described embodiment, the bent portion 23a of the electric wire 23 is formed by the electric wire forming device 10 so as to have Figures 13A-13B The ladder shape shown. However, by changing the forming surfaces 20a and 15a of the convex and concave forming dies 20 and 15, the electric wire forming device 10 can form the bent portion 23a to have other shapes. For example, the bent portion 23a may be curved instead of stepped. In addition, the bend 23 a can also be configured partially stepped and partially curved.

Deformed example 2

[0108] In the above embodiment, the pressing mechanism is configured to move the male forming die 20 toward the female forming die 15 to press the bent portion 23a of the electric wire 23 between the forming surfaces 20a and 15a of the male and female forming dies 20 and 15 . However, the pressing mechanism may also be configured to move the female forming die 15 towards the male forming die 20 so as to compress the bend 23a between the forming surfaces 20a and 15a.

Deformed example 3

[0110] In the above embodiments, the elastic members 12 and 13 of the restraining mechanism are realized by coil springs. However, the elastic members 12 and 13 may also be provided in other forms, such as rubber members and fluid springs.

[0111] In addition, the restraining mechanism may also include different numbers of elastic members, such as one or three.

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PUM

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Abstract

An electric wire shaping apparatus is disclosed for shaping an electric wire for a stator coil. The electric wire includes a turn portion that is to be located outside of slots of a stator core and a pair of straight portions that are connected by the turn portion and to be respectively received in two of the slots. The interval between the straight portions defines a coil pitch. The apparatus includes a shaping mechanism and a pair of coil pitch keeping mechanisms. The shaping mechanism presses the turn portion of the electric wire in its width-wise direction, thereby shaping the turn portion to have a desired shape. The coil pitch keeping mechanisms respectively press the straight portions of the electric wire toward the inside space between the straight portions, thereby preventing theinterval between the straight portions from being changed by the pressing of the turn portion.

Description

technical field [0001] The present invention generally relates to apparatus and methods for manufacturing rotating electric machines for use as electric motors and generators, for example in motor vehicles. [0002] More specifically, the present invention relates to an apparatus and method for shaping electric wires of a stator coil of a rotating electrical machine, thereby forming the coil ends of the stator coil into a desired shape. Hereinafter, a coil end refers to an axial end of a stator coil located outside a stator core slot of a rotating electric machine. Background technique [0003] Generally, in order to increase the torque density of a rotating electrical machine, it is necessary to improve the space factor of the electric wires forming the stator coils of the electric machine by, for example, using rectangular cross-section wires as the electric wires. In addition, it is also necessary to minimize the coil ends of the stator coils which contribute little to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/085
CPCH02K15/0478Y10T29/49009
Inventor 秋本明人谷口升野畑和宏
Owner DENSO CORP