EP3092703A2 - Lame isolante - Google Patents

Lame isolante

Info

Publication number
EP3092703A2
EP3092703A2 EP14808555.8A EP14808555A EP3092703A2 EP 3092703 A2 EP3092703 A2 EP 3092703A2 EP 14808555 A EP14808555 A EP 14808555A EP 3092703 A2 EP3092703 A2 EP 3092703A2
Authority
EP
European Patent Office
Prior art keywords
winding
insulating
holding element
wire
insulating lamella
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.)
Withdrawn
Application number
EP14808555.8A
Other languages
German (de)
English (en)
Inventor
Christian Meyer
Torsten Gmuend
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3092703A2 publication Critical patent/EP3092703A2/fr
Withdrawn legal-status Critical Current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
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • 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
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/30—Windings characterised by the insulating material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Definitions

  • the invention relates to an insulating lamella for a winding of an electric motor.
  • Stator wire windings of electronically commutated EC motors are usually separated or electrically insulated with insulating lamellae of electrically non-conductive plastic from steel teeth of the stator.
  • the said conventional insulating lamellae are generally provided with a groove or rib structure in order to securely hold wire layers of the windings in their position and thus to ensure a defined degree of filling of the winding wire.
  • DE 10 2007 004 562 A1 discloses an insulating lamella for an electric machine armature.
  • the insulating lamella contains ferromagnetic material, whereby a magnetic flux through the insulating lamella is improved.
  • an object of the present invention to make different winding wires used for a winding of an electric motor improved.
  • the object is achieved with an insulating lamella for a winding of an electric motor, which is characterized in that the insulating lamella has a holding element formed from a deformable material, wherein by means of the holding element at least a portion of the winding on the insulating lamella is substantially stationary can be arranged.
  • the insulating blade according to the invention it is considered to be particularly advantageous that it is possible with the insulating blade according to the invention to make different wires with only one Isolierlamellentyp usable.
  • a defined wire position of the winding can be achieved simply and inexpensively, because in the case of different wire diameters, no complicated and unproductive set-up processes are required for providing adapted insulating lamellae.
  • the winding wire creates its groove when automated laying or winding to some extent itself.
  • Embodiments of the insulating lamella are the subject of dependent claims.
  • the holding element is formed from a thermoplastic elastomer having a defined Shore hardness.
  • a further embodiment of the insulating lamella is characterized in that the Shore hardness of the holding element is approximately> 30.
  • specifically dimensioned Shore hardnesses are used for the holding element, which cause particularly favorable performance characteristics of the thermoplastic elastomer.
  • a further embodiment of the insulating lamella is characterized in that a width of the holding element formed in an arrangement direction of the winding corresponds to approximately> half the width of the insulating lamella formed in the arrangement direction of the winding. This results in relatively long groove progressions, which generate high friction, causing the winding wire on the
  • a further embodiment of the insulating lamella is characterized in that a width of the holding element formed in an arrangement direction of the winding corresponds to approximately ⁇ half the width of the insulating lamella formed in the arrangement direction of the winding. This advantageously means that the wire of the winding during the winding process well into the narrow holding element
  • drawing in is meant here that the winding wire during the winding process due to the geometric configuration of the holding element finds a low mechanical resistance and therefore can easily penetrate into the material of the retaining element , This way is due to a deep
  • a layer thickness of the holding element is adapted to a wire thickness of the winding.
  • the layer thickness of the holding element is designed to be rather thin for rather thin types of wire, but rather large for rather thick types of wire. In this way is used within the insulating lamella according to the invention for each individual
  • Wire type supports the best possible fit.
  • FIG. 1 shows a perspective view of a motor housing with a
  • FIG. 2 is a perspective enlarged detail view of FIG. 1;
  • FIG. 2 is a perspective enlarged detail view of FIG. 1;
  • Fig. 3a shows a first embodiment of the insulating lamella
  • 3b shows another embodiment of the insulating lamella
  • Fig. 4 shows a further embodiment of the insulating lamella in the wound
  • FIG. 1 shows a perspective view of a motor housing 30 of an electronically commutated EC motor, in which a symmetrically formed stator ring with radially arranged teeth 2 (for example steel teeth) for an electrical winding 20 is arranged.
  • a symmetrically formed stator ring with radially arranged teeth 2 for example steel teeth
  • the winding 20 of the stator ring is electrically isolated from the stator ring and positioned in a defined manner.
  • Each insulating lamella 10 encases each tooth 2 in large parts.
  • a rotor (not shown) with magnets disposed thereon is rotatably disposed within the stator ring.
  • FIG. 2 shows an enlarged perspective detailed view of FIG. 1.
  • the aforementioned conventional insulating lamellae 10 for the purpose of secure fixation of the winding 20 have lateral grooves or ribs 3, by means of which the first wire layer of the winding 20 is securely held in a defined position.
  • the disadvantage means that for each individual conventional insulating lamella 10 only a specific wire can be used with a specific wire diameter, wherein the wire diameter is adapted to the groove diameter.
  • a holding element 1 which is formed from a deformable material (eg, a thermoplastic elastomer, TPE). Due to a pressure generated during a (usually automated) winding process on the wire of the winding 20 is the TPE material elastically deformed and formed a groove in the TPE material, which holds the first wire layer of the winding 20 in a defined position or fixed.
  • Fig. 3a shows a first embodiment of the insulating lamella 10 in the form of a Einzel leopardisolation with an additionally molded retaining element 1 in the form of an elastomeric rib or surface, which allows the safe location of any wire diameter.
  • FIG. 3 a shows the upper insulating lamella 10 to be placed on the tooth 2.
  • the holding element 1 is arranged on a bearing surface of the insulating lamella 10, which rests on the tooth 2.
  • Insulating lamella 10 is formed relatively small.
  • a width of the holding element 1 defined in the above sense is approximately less than or equal to a half width of the supporting surface of the insulating lamella 10 defined in the above sense.
  • the holding element 1 is relatively high in relation to an overall height of the insulating lamella 1.
  • FIG. 3b An alternative embodiment of the insulating strip 10 according to the invention is shown in Fig. 3b.
  • the holding element 1 is formed relatively wide and low, which means that a groove formed due to the pressure exerted on the wire groove is relatively long and thus a holding effect of the wire within the holding member 1 due to friction can be very good.
  • This may preferably mean that a width of the holding element 1 defined in the above sense is approximately greater than or equal to a half width of the supporting surface of the insulating lamella 10 defined in the above sense.
  • the holding element 1 is relatively low or flat in relation to an overall height of the insulating lamella 1.
  • thermoplastic elastomers with a Shore hardness of about> 30 or about> 40 for the retaining element 1 have very favorable performance properties.
  • the actual Shore hardness is matched to properties of the winding wire used (eg wire diameter, type of wire, wire material, etc.), so that the wire in the holding element 1 always finds a suitable counterpart that is able to provide sufficient mechanical resistance during winding.
  • a winding structure of the entire winding 20 is arbitrary and it is particularly important that the first wire layer of the winding 20 is arranged substantially stationary within the insulating lamella 10, wherein the result in additional wire layers of the groove structure of the first wire layer itself.
  • a variety of variants and thus manufacturing and storage costs for the insulating lamella can be greatly reduced with the insulating lamella 10 according to the invention, because for the insulating lamella 10 of any wire quality and grade is used. Thus, a danger of confusion with similar dimensions of the insulating lamella is substantially excluded.
  • a production of the insulating lamella 10 according to the invention is preferably carried out by means of a 2K injection process (two-component injection process), wherein two components are processed or manufactured successively in a corresponding tool.
  • a TPE rib or TPE surface is placed or molded onto the plastic part of the insulating lamella 10 by a second injection process.
  • This retaining element 1 generated in this way takes over the wire layer guide instead of the conventional groove structures and allows the winding of any wire diameter.
  • the insulating strip 10 As a result, with the insulating strip 10, a high degree of filling of the winding 20 can be produced and thereby a well dimensionable power factor of the electric motor, wherein the power factor depends strongly on the said degree of filling.
  • the insulating lamella 10 is of course suitable for both stator and rotor windings.
  • the insulating fin 10 is not limited to a specific type of electric motor.
  • the present invention proposes an insulating lamination for a winding of an electric motor, which advantageously makes it possible to use the same type of insulating lamella for different wire diameters.

Landscapes

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

Abstract

L'invention concerne une lame isolante (10) destinée à un enroulement (20) d'un moteur électrique. L'invention est caractérisée en ce que la lame isolante (10) comprend un élément de retenue (1) formé à partir d'un matériau déformable (1), une ou plusieurs parties de l'enroulement (20) pouvant être disposées de façon sensiblement immobile sur la lame isolante (10) au moyen de l'élément de retenue (1).
EP14808555.8A 2014-01-09 2014-11-27 Lame isolante Withdrawn EP3092703A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014200204.4A DE102014200204A1 (de) 2014-01-09 2014-01-09 Isolierlamelle
PCT/EP2014/075731 WO2015104093A2 (fr) 2014-01-09 2014-11-27 Lame isolante

Publications (1)

Publication Number Publication Date
EP3092703A2 true EP3092703A2 (fr) 2016-11-16

Family

ID=52011183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14808555.8A Withdrawn EP3092703A2 (fr) 2014-01-09 2014-11-27 Lame isolante

Country Status (4)

Country Link
EP (1) EP3092703A2 (fr)
CN (1) CN106104978A (fr)
DE (1) DE102014200204A1 (fr)
WO (1) WO2015104093A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018019564A (ja) * 2016-07-29 2018-02-01 株式会社マキタ 電動工具用モータにおけるコイルの形成方法、電動工具
DE102022204802A1 (de) 2022-05-16 2023-11-16 Volkswagen Aktiengesellschaft Verfahren zur Herstellung eines Rotors, fremderregte Synchronmaschine und Kraftfahrzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007004562A1 (de) 2007-01-30 2008-07-31 Robert Bosch Gmbh Isolierlamelle für einen Elektromaschinenanker sowie Elektromaschinenanker
DE102010064196A1 (de) * 2010-12-27 2012-06-28 Robert Bosch Gmbh Elektromotor, Isolationskappe und Verfahren zur Herstellung eines Elektromotors
DE102011083058A1 (de) * 2011-09-20 2013-03-21 Robert Bosch Gmbh Trägerzahn, elektrische Maschine und Verfahren zur Herstellung einer solchen
JP5391325B1 (ja) * 2012-06-01 2014-01-15 ファナック株式会社 電動機にコイルを固定するコイル固定装置、及び該コイル固定装置を備えた電動機
US9172289B2 (en) * 2012-11-27 2015-10-27 Regal Beloit America, Inc. Wire guide for use in an electric machine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015104093A2 *

Also Published As

Publication number Publication date
CN106104978A (zh) 2016-11-09
WO2015104093A2 (fr) 2015-07-16
WO2015104093A3 (fr) 2015-10-22
DE102014200204A1 (de) 2015-07-09

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