EP1103095A1 - Moteur electrique - Google Patents

Moteur electrique

Info

Publication number
EP1103095A1
EP1103095A1 EP00909013A EP00909013A EP1103095A1 EP 1103095 A1 EP1103095 A1 EP 1103095A1 EP 00909013 A EP00909013 A EP 00909013A EP 00909013 A EP00909013 A EP 00909013A EP 1103095 A1 EP1103095 A1 EP 1103095A1
Authority
EP
European Patent Office
Prior art keywords
armature shaft
bearing
housing
armature
bearing seat
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Withdrawn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
EP00909013A
Other languages
German (de)
English (en)
Inventor
Hans Kobschaetzky
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 EP1103095A1 publication Critical patent/EP1103095A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/081—Structural association with bearings specially adapted for worm gear drives
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H2057/0213—Support of worm gear shafts

Definitions

  • the invention relates to an electric motor, which is provided in particular as a wiper motor in a motor vehicle, according to the preamble of claims 1 and 3.
  • An outer ring of the armature shaft bearing is inserted in a bearing seat in the housing and axially secured by means of a spring ring inserted into a groove in the housing.
  • This type of axial securing of the armature shaft bearing in the housing of the electric motor has the disadvantage that it is complex.
  • Another disadvantage of this type of axial securing of the armature shaft bearing in the bearing seat of the housing is that it is not possible if the bearing seat is not on the side is accessible, on which the spring washer is inserted into the groove in the housing.
  • the axial securing of the armature shaft bearing in the bearing seat of the housing requires an assembly opening in the housing.
  • the housing of the electric motor according to the invention with the features of claim 1 has a latching or snap connection, which holds the armature shaft bearing axially with or without play in the bearing seat.
  • the armature shaft bearing is inserted axially into the bearing seat until the snap or snap connection engages or snaps in; the armature shaft bearing is axially secured with or without play in the bearing seat simply by inserting the armature shaft bearing into the bearing seat without any further assembly steps.
  • the axial securing of the armature shaft bearing in the housing of the electric motor is thus quick, simple and inexpensive, the armature shaft bearing can already be placed on the armature shaft when inserted into the bearing seat of the housing and can be inserted with the armature shaft into the bearing seat of the housing.
  • a latching or snap connection is understood to mean a connection with a latching or snap element that is elastically pressed to the side when the armature shaft bearing is inserted into the bearing seat and springs back into its starting position when the armature shaft bearing has overcome the latching or snap element, the Locking or snap element holds the armature shaft bearing axially in the bearing seat by positive locking.
  • the armature shaft bearing is fixed in the bearing seat by caulking the housing of the electric motor in the region of the bearing seat. Due to the caulking, an inward-facing collar on the bearing seat can be produced which holds the armature shaft bearing in the bearing seat by positive locking. Another possibility is to deform the housing material by caulking into one or more recesses in the outer circumference of the armature shaft bearing, whereby the armature shaft bearing is also fixed in the bearing seat by positive locking. The caulking can also cause jamming of the armature shaft bearing in the bearing seat, that is to say a frictional connection by frictional connection. Fixing the armature shaft bearing by caulking has the advantage that the bearing seat also does not have to be accessible, since the caulking can be carried out from an outside of the housing of the electric motor.
  • the invention according to claim 4 is provided for a plain bearing as an armature shaft bearing which, unlike a roller bearing, the inner ring of which is pressed onto the armature shaft and which is consequently axially fixed on the armature shaft and can be pressed with the armature shaft into the bearing seat, is axially displaceable on the armature shaft and therefore cannot be pressed into the bearing seat with the armature shaft like a roller bearing.
  • the housing has a longitudinal play start for the armature shaft produced by shaping, which limits axial play of the armature shaft. By reshaping, the axial play is set to an intended value, which can also be zero.
  • This embodiment of the invention is particularly advantageous when the armature shaft is mounted with plain bearings, which does not permit an axial fixing of the armature shaft known from rolling bearings by arranging a fixed and a floating bearing or two support bearings.
  • Figure 1 shows an electric motor according to the invention in axial section
  • the electric motor 10 according to the invention shown in FIG. 1 is provided for driving a windshield wiper of a motor vehicle via a worm gear (not shown).
  • the electric motor 10 has an armature 12 an armature shaft 14, which is rotatably mounted in a motor housing 16 (pole pot).
  • a worm housing 18, which is also part of the motor housing, is flanged coaxially to the motor housing 16.
  • the cup-shaped 16 On a bottom 20, the cup-shaped 16 has a hollow cylindrical shape, which forms a bearing seat 22 and into which a plain bearing as an armature shaft bearing 24 is pressed.
  • the armature shaft 14 is rotatably supported at one end in the armature shaft bearing 24.
  • the electric motor 10 has a further armature shaft bearing 26, which is also designed as a plain bearing.
  • This armature shaft bearing 26 is rotatably arranged on the armature shaft 14 between the armature or more precisely between a commutator 28 of the armature 12 and a worm 30 integral with the armature shaft 14.
  • the worm 30 is produced by reshaping, in the illustrated and described embodiment of the invention, by rolling the armature shaft 14 at one end.
  • the worm 30 has a larger outer diameter than the armature shaft 14 over its remaining length, so that the armature shaft bearing 26 must be placed on the armature shaft 14 before the worm 30 is manufactured.
  • the armature shaft bearing 26 placed on the armature shaft 14 is inserted with the armature shaft 14, on which the entire armature 12 including the commutator 28 is mounted, into a bearing seat 32 which is designed as a hollow cylindrical section of the worm housing 18.
  • the armature shaft bearing 26 is held axially in the bearing seat 32 by one or more locking elements 34 arranged distributed over the circumference.
  • the latching element 34 has a spring tongue, also denoted by 34, which engages over the armature shaft bearing 26 on the circumference parallel to the circumference and which has a latching lug 36 at its free end which engages behind the armature shaft bearing 26 on an end face facing the armature 12 and thereby holds it axially in the bearing seat 32 .
  • the locking element 34 When the armature shaft bearing 26 is inserted into the bearing seat 32, the locking element 34 is removed from the Armature shaft bearing 26 pressed elastically to the side as indicated in FIG. 1 with dashed lines. After the armature shaft bearing 26 has overcome the locking lug 36 of the locking element 34, the locking element 34 springs back into its starting position, in which the locking lug 36 holds the armature shaft bearing 26 axially in the bearing seat 32.
  • a spacer sleeve 38 is placed on the armature shaft 14 between the commutator 28 and the armature shaft bearing 26.
  • the armature shaft bearing 26 is thus pressed with the armature 12, on the armature shaft 14 of which it is placed, into the bearing seat 32 until the latching element 34 engages.
  • the bearing seat 32 must therefore not be accessible for inserting the armature shaft bearing 26.
  • the worm housing 14 has a longitudinal play 42 which fixes the armature shaft 14 with or without axial play in the motor and worm housing 16, 18.
  • the longitudinal play 42 is made by reshaping, for example by means of an embossing die (not shown), the longitudinal play 42 is only produced after the armature shaft bearing 26 arranged between the commutator 28 and the screw 30 has been inserted into the bearing seat 32, so that sufficient for inserting the armature shaft bearing 26 There is free space for the armature shaft 14 in the axial direction.
  • the longitudinal play 42 subsequently produced by shaping, the axial play of the armature shaft 14 can be set exactly to an intended value, which can also be zero.
  • the armature shaft bearing 32 arranged between the commutator 28 and the worm 30 is axially fixed in the bearing seat 32 by a circumferential, inwardly facing collar 44.
  • the collar 44 is produced by reshaping the worm housing 18 after the armature shaft bearing 26 has been inserted into the bearing seat 32.
  • the reshaping of the collar 44 can be produced all around, for example with the pressure roller 46 indicated by broken lines. Instead of a circumferential collar 44, reshaping can also take place only at one or a few points on the circumference of the bearing seat 32.
  • the armature shaft bearing 26 arranged between the commutator 28 and the screw 30 has depressions 48 on its outer circumference. Material 50 of the bearing seat 32 is deformed into these recesses 48, for example by means of the plunger 52 shown in dashed lines in FIG. 3, and the armature shaft bearing 26 is thereby axially fixed in the bearing seat 32. Since the plunger 52 in FIG. 3 and the pressure roller 46 in FIG. 2 are attached from the outside, the bearing seat 32 does not have to be accessible for inserting and fixing the armature shaft bearing 26.
  • the reshaping of the bearing seat 32 for axially fixing the armature shaft bearing 26 as well as the reshaping of the longitudinal play 42 can be carried out, for example, thermally by means of ultrasound, by quay reshaping or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

L'invention concerne un moteur électrique (10), en particulier un moteur d'essuie-glace pour un véhicule automobile. L'invention vise à permettre le montage d'un palier d'arbre d'induit (26) dans un siège de palier inaccessible (32) dans un carter (16, 18) du moteur électrique (10). A cet effet, on fixe le palier d'arbre d'induit (26) axialement dans le siège de palier (32) au moyen d'un élément d'encliquetage (34, 36). Il est ainsi possible de monter le palier d'arbre d'induit (26) posé sur l'arbre d'induit (14) avec l'induit (12) dans le siège de palier (32).
EP00909013A 1999-06-09 2000-02-08 Moteur electrique Withdrawn EP1103095A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19926171 1999-06-09
DE19926171A DE19926171A1 (de) 1999-06-09 1999-06-09 Elektromotor
PCT/DE2000/000376 WO2000077912A1 (fr) 1999-06-09 2000-02-08 Moteur electrique

Publications (1)

Publication Number Publication Date
EP1103095A1 true EP1103095A1 (fr) 2001-05-30

Family

ID=7910599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00909013A Withdrawn EP1103095A1 (fr) 1999-06-09 2000-02-08 Moteur electrique

Country Status (10)

Country Link
US (1) US6664684B1 (fr)
EP (1) EP1103095A1 (fr)
JP (1) JP2003502995A (fr)
KR (1) KR20010072252A (fr)
CN (1) CN1314021A (fr)
AU (1) AU758137B2 (fr)
BR (1) BR0006684A (fr)
DE (1) DE19926171A1 (fr)
RU (1) RU2264021C2 (fr)
WO (1) WO2000077912A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916998A1 (de) * 1999-04-15 2000-10-19 Bosch Gmbh Robert Verfahren zur Anbringung einer Schnecke an einer Ankerwelle eines Ankers eines Elektromotors und mit dem Verfahren hergestellter Anker
DE10118275A1 (de) 2001-04-12 2002-10-31 Bosch Gmbh Robert Gehäuse mit zumindest einem Funktionselement einer elektrischen Maschine
JP4145083B2 (ja) * 2002-07-11 2008-09-03 ミネベア株式会社 モータおよび計器
DE102004015541B4 (de) * 2003-04-01 2012-06-21 Aisan Kogyo K.K. Schrittmotor und Strömungsregelungsventil, das einen solchen Schrittmotor aufweist
DE102004045626A1 (de) * 2004-09-21 2006-04-06 Robert Bosch Gmbh Elektrische Maschine
DE102005030217A1 (de) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Elektromotor und Getriebe-Antriebseinheit für Stellantriebe im Kraftfahrzeug
DE102005046354A1 (de) * 2005-09-28 2007-03-29 Robert Bosch Gmbh Getriebe-Antriebseinheit mit einer axialspielfreien Lagerbefestigung, insbesondere zum Verstellen eines beweglichen Teils im Kraftfahrzeug
US20070080593A1 (en) * 2005-10-07 2007-04-12 O'donnell Steven B Bearing sleeve
KR100740704B1 (ko) * 2006-04-19 2007-07-18 동양기전 주식회사 모터 조립체
DE102006042340A1 (de) * 2006-09-08 2008-03-27 Robert Bosch Gmbh Elektromotor, insbesondere für einen Scheibenwischerantrieb eines Kraftfahrzeugs mit einer verbesserten Aufnahme der Lagerung der Ankerwelle
DE102008054507A1 (de) 2008-12-11 2010-06-17 Robert Bosch Gmbh Elektromotor sowie Montageverfahren
DE102011081043A1 (de) * 2011-08-16 2013-02-21 Robert Bosch Gmbh Getriebe-Antriebseinrichtung
DE102012103910A1 (de) * 2012-05-04 2013-11-07 Valeo Systèmes d'Essuyage Scheibenwischermotor
JP6132612B2 (ja) * 2013-03-22 2017-05-24 株式会社ミツバ 電動モータ装置、ワイパ駆動用電動モータ装置
DE102016216888A1 (de) * 2016-09-06 2018-03-08 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Antriebsvorrichtung für einen Fensterheber, mit einem Lagerelement zum Fixieren eines Stators in einem Gehäuse
JP7684056B2 (ja) * 2021-02-26 2025-05-27 ミネベアミツミ株式会社 モータ

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4491752A (en) * 1983-03-31 1985-01-01 Black & Decker Inc. Electrical connection system for switches
JPH026264Y2 (fr) * 1986-12-09 1990-02-15
US5113104A (en) * 1989-10-19 1992-05-12 General Electric Company Structured product dynamoelectric machine
JPH03234915A (ja) * 1990-02-07 1991-10-18 Mabuchi Motor Co Ltd 小型モータの軸受装置及びその製造方法
US5895207A (en) * 1993-06-17 1999-04-20 Itt Automotive Europe, Gmbh Electric motor-pump assembly
DE4422492A1 (de) * 1993-07-19 1995-01-26 Teves Gmbh Alfred Motor mit einem Umlaufgetriebe
US5485044A (en) * 1993-09-30 1996-01-16 United Technologies Automotive, Inc. Motor with end play insert
RU2080729C1 (ru) * 1994-10-18 1997-05-27 АК "Туламашзавод" Электродвигатель для бытовых швейных машин
DE29513700U1 (de) * 1995-08-25 1996-09-19 Siemens AG, 80333 München Motor-Getriebe-Antriebseinheit, insbesondere für einen Kraftfahrzeug-Fensterheberantrieb o.dgl.
DE19712361B4 (de) * 1997-03-25 2009-07-09 Robert Bosch Gmbh Verfahren zum Einstellen eines Axiallagers eines Aggregates

Non-Patent Citations (1)

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Title
See references of WO0077912A1 *

Also Published As

Publication number Publication date
BR0006684A (pt) 2001-05-02
AU758137B2 (en) 2003-03-13
AU3145800A (en) 2001-01-02
DE19926171A1 (de) 2000-12-14
KR20010072252A (ko) 2001-07-31
WO2000077912A1 (fr) 2000-12-21
JP2003502995A (ja) 2003-01-21
CN1314021A (zh) 2001-09-19
RU2264021C2 (ru) 2005-11-10
US6664684B1 (en) 2003-12-16

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