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Method for separating windings of electric motor

A motor and winding technology, which is applied in the field of insulating film peeling, can solve the problems of deterioration of motor defect rate and deterioration of welding quality.

Active Publication Date: 2014-09-24
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, although the removal of the aluminum oxide layer as described in the patent literature is an important issue, no countermeasures have been taken for the disconnection and insulation coating residue in the previous process, that is, when the insulation coating of the electric wire is peeled off. Therefore, motor production Deterioration of defect rate and deterioration of welding quality have become problems
In particular, becomes a greater problem with thinner wires

Method used

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  • Method for separating windings of electric motor
  • Method for separating windings of electric motor
  • Method for separating windings of electric motor

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Embodiment approach

[0018] Embodiments of the present invention will be described below using the drawings. figure 1 It is a configuration diagram showing a partial cross section of a motor according to an embodiment of the present invention. figure 2 It is a figure which shows the specific structural example of the winding finished product (stator finished product) 17 of this motor. In this embodiment, an example of a motor, that is, a brushless motor mounted in an air conditioner as an electric device and used for driving a blower fan will be described. In addition, in this embodiment, the example of the solder connection between an electric wire conductor and a terminal is given and demonstrated. and, figure 2 The illustrated finished wire winding product 17 is constituted by using a winding wire obtained by peeling off the insulation coating film at the tip of the electric wire covered with the insulation coating by the winding stripping method of the motor according to the present invent...

Embodiment 1

[0029]In the description of the embodiment, the electric wire 20 is used in which the conductor material is aluminum, the conductor diameter is 0.3 mm, the material of the insulating coating 19 is PEWN, and the insulating coating thickness is 0.012 mm. In addition, a tension of 30 MPa was applied to the conductor of the electric wire in the direction of tension applied to the winding end portion 4, and the cutting blade 101 was rotated at a rotation speed of 1500 r / min, thereby peeling off the insulating coating 19 . At this time, the cutting tool moving direction 105 is the same as the tension application direction. In addition, the cut-in prevention stopper of the cutting tool 101 was adjusted so that the portion of the conductor 18 having a depth of 0.002 mm was peeled off at the same time. Under these conditions, 1,000 motors were produced, and the disconnection failure rate when the insulation coating was peeled off, the insulation coating residue failure rate after peeli...

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Abstract

This method for separating windings of an electric motor is a method for separating an insulating film on an end part of a winding that is wound on a magnetic pole of a stator. This winding-separation method is characterized in that a winding end part is pulled into a tensioned state, and an insulating-film-separating device having a rotating cutting blade is moved, separating the insulating film. It is thereby possible to separate the insulating film without breaking the wire. Even if aluminum, which is weaker than copper wire or iron wire, is employed in a conductor of a winding, it will be possible to prevent breakage when the insulating film is being separated.

Description

technical field [0001] The present invention relates to a technique of peeling off the insulating coating covering the tip of an electric wire covered with at least one insulating coating to expose a core wire, and joining the core wire to another member by welding. In particular, it relates to a method of peeling off a wire wound around a stator of an electric motor or the like. Background technique [0002] Conventionally, copper wires have been mainly selected as conductors of electric wires used in motors (electric motors). However, the price of copper wires has increased in recent years, and the improvement of the weight of the motor itself has been promoted, and the use of electric wires using conductors other than copper has gradually increased. [0003] Such wires other than copper wires, such as aluminum wires, have a solid aluminum oxide layer on their surface. Therefore, if the insulating coating and aluminum oxide layer are not removed, it is very difficult to s...

Claims

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Application Information

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IPC IPC(8): H02K15/04H01F41/06H02G1/12
CPCH02K15/0075H01F41/0616H01F41/066H02K15/0068
Inventor 渡边彰彦高野笃史长谷川武彦畑矢英儿刘裕午近藤宪司
Owner PANASONIC CORP
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