Insertion system and method to insert insulators and coils in slots of stator of electric machine

A technology of insertion system, stator, applied in the field of electric motors, which can solve the problems of increased manufacturing costs, troublesome operation of slot liners, damage to motors, etc.

Inactive Publication Date: 2014-03-12
TM4 INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, handling many slot liners is cumbersome
Furthermore, the removal or folding of excess material is an extra step which increases manufacturing costs
Third, since the teeth of the stack are not completely covered by the slot liners, accidental contact may occur between the stack and the coils and damage the motor

Method used

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  • Insertion system and method to insert insulators and coils in slots of stator of electric machine
  • Insertion system and method to insert insulators and coils in slots of stator of electric machine
  • Insertion system and method to insert insulators and coils in slots of stator of electric machine

Examples

Experimental program
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Embodiment Construction

[0047] Turning now to the attached Figures 1 to 5 , an exemplary insertion system 30 according to a first illustrative embodiment will be described.

[0048] The insertion system 30 is designed for inserting a continuous insulating paper 32 in a longitudinal slot 36 of a stator 38 from a continuous paper roll 34 .

[0049]Insertion system 30 includes a rotating stator holder 42, schematically shown with four spokes 44, and two interconnected radially movable pre-coil holding and pushing members, referred to as pre-coil holders 46. The exemplary insertion system 30 optionally includes a radially moveable interface paper retaining member 48 and a radially moveable wedge retaining member 50 .

[0050] In fact, as those skilled in the art will readily understand, the insertion of the illustrated systems and methods discussed herein is also designed to insert interface insulating paper and wedges, which are optional and can be omitted.

[0051] If the system 30 is a manual syst...

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PUM

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Abstract

The insertion of electrically insulating paper from a continuous roll into slots of a stator created by outwardly projecting teeth is described herein. The insertion of the insulating paper is done by the insertion of prewound coils in the stator slots. The electrically insulating paper is not cut prior to its insertion in the slots, thereby completely covering the outer surface of the stator. The insertion systems and methods described herein are also optionally concerned with the insertion of interphase insulation paper between the different coils inserted in the stator slots and with the insertion of slot closing wedges.

Description

technical field [0001] The present invention relates to electric motors. More particularly, the present invention relates to systems and methods for inserting insulators and pre-wound coils in slots of a stator of an electrical machine. Background technique [0002] The stator and rotor of an electric machine are usually made of stacked laminations provided with coil receiving slots defined by protruding teeth therebetween. These slots generally need to be insulated from the coils that will be inserted there. Insulating paper materials have been developed for this purpose. [0003] Traditionally, rolls of this insulating paper are cut and folded to form individual slot liners, which are manually or automatically inserted into the slots. These pads are generally U-shaped with arms dimensioned to extend outside the slot, thus helping to guide the coils there while preventing contact between the coils and the stacked laminations. Once the coil is inserted, the excess materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K15/00H02K15/06H02K15/10
CPCH02K15/063H02K15/10H02K3/345H02K15/066Y10T29/53152Y10T29/49009
Inventor B.卡彭迪尔M.霍尔S.波林
Owner TM4 INC
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