WO2009100963A1 - Moteur électrique - Google Patents

Moteur électrique Download PDF

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Publication number
WO2009100963A1
WO2009100963A1 PCT/EP2009/050408 EP2009050408W WO2009100963A1 WO 2009100963 A1 WO2009100963 A1 WO 2009100963A1 EP 2009050408 W EP2009050408 W EP 2009050408W WO 2009100963 A1 WO2009100963 A1 WO 2009100963A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
motor according
bearing
housing
deep groove
Prior art date
Application number
PCT/EP2009/050408
Other languages
German (de)
English (en)
Inventor
Lothar Schröder
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2009100963A1 publication Critical patent/WO2009100963A1/fr

Links

Classifications

    • 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
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Definitions

  • the present invention relates to an electric motor with a housing and a rotor which is mounted in the housing via a fixed / floating bearing, wherein a deep groove ball bearing with an inner ring and an outer ring is provided as a fixed bearing.
  • Electric motors find, for example in the automotive industry multiple use, such as drives for throttle valve actuators, camshaft adjuster or fan, just to name a few examples. These are usually designed as DC motors electric motors, which are used in conjunction with a transmission. These electric motors consist of a stator and a rotor, which is accommodated within a housing by means of a solid / loose bearing consisting of two deep groove ball bearings.
  • the deep groove ball bearing which acts as a fixed bearing fixes the rotor rigidly in the axial direction by rigidly clamping the outer ring of the deep groove ball bearing in the housing and the inner ring on the rotor. Such a deep groove ball bearing is always subject to an axial play.
  • the rotor of such an electric motor can experience a certain force in the axial direction during normal operation, the z. B. originates from the transmission and presses with the rotor on the fixed bearing. It has been shown that due to the axial play of the fixed bearing of the rotor, which as such represents an unsprung mass, due to vibrations in a motor vehicle, which is excited on the one hand by the crank mechanism of an internal combustion engine and on the other hand by driving over bumps to natural oscillations and then the rotor with its mass can strike dynamically against the rigidly clamped fixed bearing, whereby impermissibly high axial loads occur, which can eventually damage the fixed bearing.
  • the invention is therefore based on the object, in electric motors of the type mentioned in an unacceptably high Axi albelastung used as a fixed bearing, with an axial play afflicted deep groove ball bearings.
  • the tensioning device acts as a spring element which axially elastically supports the rotor and elastically intercepts the axial shocks of the rotor against the fixed bearing which are caused by the vehicle vibrations in the case of the axial play of the fixed bearing.
  • the clamping device is preferably designed as a axially resiliently biased against the fixed bearing sheet metal disc.
  • the sheet-metal disc on a connectable to the housing portion and an axially pressed against the fixed bearing, elastic portion.
  • a sheet-metal disc can be connected directly to the housing, so that no additional Angurück is required.
  • Sheet metal disk consists of at least one protruding from the rigid portion projection which is pressed against either the inner ring or the outer ring of the ball bearing.
  • the rigid portion of the sheet metal disc is preferably welded to the housing.
  • the at least one projection is configured substantially T-shaped and arched concavely with respect to the landing sites on the ball bearing. This results in a selective introduction of force.
  • the projection may be from the sheet metal disk, or, alternatively, be formed by cutting out of the sheet metal disk by means of a laser and subsequent to the cutting process forming.
  • the material is suitably spring steel is used.
  • the clamping device acts with an elastic clamping force on the clamped ring, which corresponds to a multiple of the axial load of the ball bearing in normal operation. This avoids that the clamped ring can shift due to normal operating forces.
  • the elastic clamping force preferably corresponds to at least ten times the axial load of the ball bearing in normal operation.
  • the respectively elastically clamped inner ring or outer ring of the deep groove ball bearing in its seat on a suitable fit which allows a frictional, damping axial movement of the respective bearing ring when exceeding the clamping force.
  • the friction damping of the movement supports the reduction of dynamic forces.
  • FIG. 1 is a sectional view of an inventive elastic clamping a deep groove ball bearing by means of a sheet-metal disc
  • FIG. 2 shows a plan view of the sheet-metal disk illustrated in FIG. 1, FIG.
  • Fig. 3 is a side view of the sheet metal disc shown in FIG. 1 and
  • elastic clamping 2 shows a housing 4 of a throttle actuator for the intake tract of an internal combustion engine.
  • deep groove ball bearing 16 is arranged with a on the rotor (not shown) fixed The inner race 10 and an outer ring 8.
  • the deep groove ball bearing 6 is part of a roller bearing pair, which serves to support a rotor, not shown here, a DC motor, which forms the electric actuator for the Drosselklap- penstellglied.
  • the outer ring 8 of the deep groove ball bearing 6 is elastically clamped in the housing 4 by means of a metal disk 22 acting as a tensioning device. The clamping force is significantly above normal operating forces, so that the bearing behaves in this range below the threshold as a normal rigid fixed bearing.
  • the sheet-metal disc 22 which is made of a spring steel, has a rigid section 18 connected to the housing 4 and an elastic section 20 which presses axially against the fixed bearing 6.
  • the rigid portion 18 is welded to the housing 4.
  • the elastic portion 20 consists of four distributed over the circumference and projecting from the rigid portion 18 projections 20, each press against the outer ring 8 of the deep groove ball bearing 6.
  • the projections 20 which have been cut out or punched out by means of laser technology are in each case configured substantially T-shaped or in some other suitable form and concavely curved relative to the ball bearing or angled towards the bearing at the ends (FIGS. 2, 3), so that the ends 24 The T-shaped protrusions abut punctually on the outer ring of the deep groove ball bearing.
  • the disc plate 22 is welded to the housing 4 in such a relative position that it is biased with an elastic clamping force against the deep groove ball bearing 6, the z. B. corresponds approximately to ten times the axial load of the deep groove ball bearing in normal operation. This factor may differ significantly in other applications.
  • the outer ring 8 of the deep groove ball bearing 6 has a transition fit, which allows a frictional, damping axial movement of the outer ring 8 in its fitting fit.
  • the deep groove ball bearing 6 elastically clamping sheet metal disc 22 acts as a spring element, which supports the rotor axially elastic in the housing 4.
  • the sheet-metal disc 22 is able to elastically attenuate the vibrations of the rotor made possible by the axial play of the fixed bearing and excited by vehicle vibrations and the axial shocks of the rotor caused thereby against the fixed bearing. These force peaks are above the clamping force, so that the ring in question can then perform the desired axial movement.
  • the friction effect as
  • the resulting during the relative movement of the outer ring friction damping 8 supports the friction damping of the sheet metal disc.
  • the sheet metal disc consists of a spring steel, which allows welding to the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Support Of The Bearing (AREA)

Abstract

L'invention concerne un moteur électrique avec un boîtier 4 et un rotor qui est monté dans le boîtier 4 au moyen d’un palier libre et d’un palier fixe 6 qui est réalisé sous forme de roulement rainuré à billes avec une bague intérieure 10 et une bague extérieure 8. Afin d’adoucir les pointes de force dynamique, la bague intérieure 10 ou la bague extérieure 8 du palier fixe 6 est maintenue élastiquement dans le boîtier 4 ou encore sur le rotor au moyen d’un dispositif de serrage.
PCT/EP2009/050408 2008-02-13 2009-01-15 Moteur électrique WO2009100963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008008965.6 2008-02-13
DE102008008965A DE102008008965A1 (de) 2008-02-13 2008-02-13 Elektromotor

Publications (1)

Publication Number Publication Date
WO2009100963A1 true WO2009100963A1 (fr) 2009-08-20

Family

ID=40637818

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/050408 WO2009100963A1 (fr) 2008-02-13 2009-01-15 Moteur électrique

Country Status (2)

Country Link
DE (1) DE102008008965A1 (fr)
WO (1) WO2009100963A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012156119A1 (fr) * 2011-05-13 2012-11-22 Robert Bosch Gmbh Ensemble palier

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015213021A1 (de) * 2015-07-13 2017-01-19 Bühler Motor GmbH Elektromotor
JP6827331B2 (ja) 2017-01-30 2021-02-10 シナノケンシ株式会社 アウターロータ型モータ
DE102017109148A1 (de) * 2017-04-28 2018-10-31 Schaeffler Technologies AG & Co. KG Lagerring mit Sicherungselement zur Lagervorspannung sowie Verdrehsicherung, Wälzlager und Gehäuse-Welle-Anordnung
DE102018111855A1 (de) * 2018-05-17 2019-11-21 Valeo Systèmes d'Essuyage Elektrische Antriebseinrichtung und Scheibenwischermotor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620876A1 (fr) * 1987-09-22 1989-03-24 Equip Electr Moteur Palier a roulement a billes pour machine electrique tournante, et plus particulierement pour alternateur de vehicule automobile
DE4019749A1 (de) * 1990-06-21 1992-01-09 Bosch Gmbh Robert Elektromagnetischer drehsteller
DE102005058078A1 (de) * 2005-12-06 2007-06-21 Robert Bosch Gmbh Lagersystem für einen Elektromotor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH240887A (de) * 1944-10-23 1946-01-31 Oerlikon Maschf Einrichtung zum federnden Begrenzen des Längsspiels der in Wälzlagern laufenden Welle von Elektrokleinmaschinen.
US3469897A (en) * 1968-02-21 1969-09-30 Smith Corp A O Lock plate for fixed motor rotor bearing
DE19805844A1 (de) * 1998-02-13 1999-08-19 Itt Mfg Enterprises Inc Elektromotor mit verrastetem Festlager
DE19934000A1 (de) * 1999-07-20 2001-01-25 Mannesmann Vdo Ag Elektromotor
DE19946383A1 (de) * 1999-09-28 2001-04-05 Weck Manfred Regelung der axialen Lagerverspannung durch Zwangspositionierung der Außenringe
DE10324621A1 (de) * 2003-05-28 2004-12-16 Robert Bosch Gmbh Elektrische Maschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620876A1 (fr) * 1987-09-22 1989-03-24 Equip Electr Moteur Palier a roulement a billes pour machine electrique tournante, et plus particulierement pour alternateur de vehicule automobile
DE4019749A1 (de) * 1990-06-21 1992-01-09 Bosch Gmbh Robert Elektromagnetischer drehsteller
DE102005058078A1 (de) * 2005-12-06 2007-06-21 Robert Bosch Gmbh Lagersystem für einen Elektromotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012156119A1 (fr) * 2011-05-13 2012-11-22 Robert Bosch Gmbh Ensemble palier
CN103620248A (zh) * 2011-05-13 2014-03-05 罗伯特·博世有限公司 轴承装置

Also Published As

Publication number Publication date
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