EP4342056A1 - Couvercle coulissant, procédé de montage d'un couvercle coulissant et outil pour la mise en oeuvre du procédé - Google Patents

Couvercle coulissant, procédé de montage d'un couvercle coulissant et outil pour la mise en oeuvre du procédé

Info

Publication number
EP4342056A1
EP4342056A1 EP22740798.8A EP22740798A EP4342056A1 EP 4342056 A1 EP4342056 A1 EP 4342056A1 EP 22740798 A EP22740798 A EP 22740798A EP 4342056 A1 EP4342056 A1 EP 4342056A1
Authority
EP
European Patent Office
Prior art keywords
cover slide
tool
driver
stator
cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22740798.8A
Other languages
German (de)
English (en)
Inventor
Michael Bernhardt
Vladislav JOSIEK
Klaus Kirchner
Jan Uherek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Innomotics GmbH
Original Assignee
Innomotics GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innomotics GmbH filed Critical Innomotics GmbH
Publication of EP4342056A1 publication Critical patent/EP4342056A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H02K3/487—Slot-closing devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0018—Applying slot closure means in the core; Manufacture of slot closure means

Definitions

  • the invention relates to a cover slide, a method for installing a cover slide and a tool for carrying out the method.
  • Electric motors typically have a so-called stator with a hollow-cylindrical, magnetically conductive body that has, on one of its lateral surfaces, partially open slots that run essentially axially and in which windings are arranged.
  • slot box serves as the slot lining. This is a folded surface insulating material whose cross-sectional shape is adapted to the contour of the slot and rests against the slot wall.
  • the slot lining forms an additional flat electrical barrier between the winding system, in particular between the copper windings made of enameled wire and the magnetically conductive body of the stator.
  • the slot is closed with a cover slide, which also consists of a folded surface insulating material and has two important functions.
  • cover slide also consists of a folded surface insulating material and has two important functions.
  • the necessary air gaps and creepage distances are realized in this way, since the cover slide and groove box overlap at the edges.
  • the slot box wedges itself with the slot tooth and thus mechanically fixes the winding in the slot, so that no individual wires can get through the can slide back into the area of the air gap or the rotor.
  • cover slides can be done either manually or automatically.
  • the cover slide is attached to the slot on the face of the stator, which is already equipped with a winding and basic insulation, and pushed axially into the slots.
  • the cover slide is pressed into the slot together with the windings using a tool which is already fitted with the cover slides and pre-wound coils.
  • this is done with a cover slide of the type mentioned at the outset, the cover slide having a latching element for a driver at its front end in the direction of insertion.
  • the latching element can advantageously be designed as a recess in a tapering front area of the cover slide.
  • a likewise advantageous variant of the latching element can be obtained by attaching a fold to the front edge of the cover slide in the direction of insertion.
  • Insertion of the cover slide is now simplified by means of a tool that engages in the snap-in element.
  • the tool can be used for both manual and automated assembly.
  • the tool preferably has a rotatably mounted base body, from which an extension protrudes as a driver, with a spring element being provided, by means of which the driver is pressed against the cover slide during the insertion process in such a way that when the driver moves forwards against the latching element protrudes.
  • a favorable embodiment of the tool is obtained when the rotatably mounted base body is flat and its outline corresponds approximately to the shape of a bell and when a diamond-shaped extension protrudes from the bottom of the bell as a driver.
  • the cover slide according to the invention can be introduced with the help of the tool sat in a fully automated production.
  • FIG. 1 shows a section through a stator of an electrical machine
  • FIG. 2 shows a first embodiment of a cover slide according to the invention
  • 3 shows a second embodiment of a cover slide according to the invention
  • FIG. 4 shows an example of a tool for installing a cover slide according to the invention.
  • the stator 9 of an electrical machine has a plurality of stator slots 10 .
  • the stator slots 10 run parallel to the axis of rotation 11 of the electrical machine. They are distributed in a circle around the axis of rotation 11 .
  • the stator slots 10 are open toward the axis of rotation 11—that is, radially inward.
  • the stator slots 10 At their end facing the axis of rotation 11 , the stator slots 10 have a tapered area 12 .
  • the main sections of windings 13 of a stator winding system are arranged in the stator slots 10 .
  • slot box 14 serves as the slot lining. This is a folded flat insulating material, the cross-sectional shape of which is adapted to the contour of the slot 10 and rests against the slot wall.
  • the slot lining forms an additional flat electrical barrier between the copper windings 13 made of enameled wire and the magnetically conductive body of the stator 9
  • the cover slide 1 according to FIG. 2 is designed in the longitudinal direction as an open trapezoid made of a surface insulating material. Its dimensions are adapted to the groove to be closed. Cover slides can be made from materials of all insulation classes. Most of the deck slides are made from polyester film (Mylar, Hostaphan), DMD (Triflexil, Evitherm, Voltaflex, Flexiso), NMN (Triflexil, Trivoltherm, Isonom, Flexiso) and Nomex.
  • the cover slide according to the invention has a taper 2, which is formed by beveling the side surfaces of the trapezoid.
  • a recess 3 is provided as a latching element in the base of the trapezium.
  • the contour of the recess can, for example, correspond to the number eight.
  • the exemplary tool as shown in Figure 4, has a base body 5, on which it is mounted at a pivot point 8 and is held in a working position by means of spring element 7 during the forward movement, in which the driver 6 of the tool moves into the recess 3 intervenes.
  • a favorable shape for the base body 5 has been found to be an approximate bell shape, one side of which forms a stop during the forward movement in a working position and, in conjunction with the spring element 7 , fixes the position of the driver 6 in the recess 3 .
  • This driver 6 preferably protrudes from the bell bottom as a rhombus-shaped extension, with one side surface of the rhombus running parallel to the base of the cover slide 1 in the working position and two side surfaces of the rhombus in a pulling direction at an angle of about 45° to the base of the cover slide 1.
  • FIG. 1 A second embodiment of a cover slide 1 according to the invention can be seen from FIG.
  • the cover slide 1 has a fold 4 on its front side, by means of which an edge is created in the course of the cover slide 1, which serves as a latching element for the driver during the insertion process.
  • the attachment of a fold 4 can be carried out easily in the case of thermally deformable plastics, i.e. thermoplastics, and thus presents a favorable alternative to the embodiment according to FIG.
  • cover slides according to the invention also enable (partially) automated production, for example in connection with the automated assembly of windings, as is known from WO 2020/058048 A1.
  • a winding tool for assembling a winding is also equipped with cover slides and the tool for assembling a cover slide. reference list

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne un couvercle coulissant, en particulier destiné à fermer une encoche dans un stator d'un moteur électrique, ledit couvercle coulissant étant plié sous la forme d'un trapèze ouvert constitué d'un matériau d'isolation plat, et l'extrémité avant du couvercle coulissant dans la direction d'insertion étant pourvue d'un élément de verrouillage pour un cliquet. Le couvercle coulissant de l'invention est plus facile et plus rapide à monter.
EP22740798.8A 2021-06-29 2022-06-24 Couvercle coulissant, procédé de montage d'un couvercle coulissant et outil pour la mise en oeuvre du procédé Pending EP4342056A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21182538.5A EP4113799A1 (fr) 2021-06-29 2021-06-29 Glissière, procédé de montage d'une glissière et outil de mise en uvre du procédé
PCT/EP2022/067383 WO2023274882A1 (fr) 2021-06-29 2022-06-24 Couvercle coulissant, procédé de montage d'un couvercle coulissant et outil pour la mise en œuvre du procédé

Publications (1)

Publication Number Publication Date
EP4342056A1 true EP4342056A1 (fr) 2024-03-27

Family

ID=76708122

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21182538.5A Withdrawn EP4113799A1 (fr) 2021-06-29 2021-06-29 Glissière, procédé de montage d'une glissière et outil de mise en uvre du procédé
EP22740798.8A Pending EP4342056A1 (fr) 2021-06-29 2022-06-24 Couvercle coulissant, procédé de montage d'un couvercle coulissant et outil pour la mise en oeuvre du procédé

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP21182538.5A Withdrawn EP4113799A1 (fr) 2021-06-29 2021-06-29 Glissière, procédé de montage d'une glissière et outil de mise en uvre du procédé

Country Status (3)

Country Link
EP (2) EP4113799A1 (fr)
CN (1) CN117693887A (fr)
WO (1) WO2023274882A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630183C3 (de) 1976-07-05 1986-07-31 Otto 7980 Ravensburg Rist Vorrichtung zum Einziehen von Wicklungen in Nuten von Statoren von Elektromotoren
JP3450124B2 (ja) * 1996-07-03 2003-09-22 山洋電気株式会社 回転電気機器用ステータの製造方法
JP2009077468A (ja) * 2007-09-19 2009-04-09 Hitachi Ltd 回転電機、および回転電機の製造方法
JP5098610B2 (ja) * 2007-12-07 2012-12-12 三菱電機株式会社 コイル挿入方法
JP5098611B2 (ja) * 2007-12-07 2012-12-12 三菱電機株式会社 コイル・ウェッジ挿入装置及びコイル・ウェッジ挿入方法。
EP3624314A1 (fr) 2018-09-17 2020-03-18 Siemens Aktiengesellschaft Insertion d'enroulements dans un paquet de tôles de stator

Also Published As

Publication number Publication date
EP4113799A1 (fr) 2023-01-04
CN117693887A (zh) 2024-03-12
WO2023274882A1 (fr) 2023-01-05

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