WO2008017616A1 - Moteur électrique - Google Patents

Moteur électrique Download PDF

Info

Publication number
WO2008017616A1
WO2008017616A1 PCT/EP2007/057874 EP2007057874W WO2008017616A1 WO 2008017616 A1 WO2008017616 A1 WO 2008017616A1 EP 2007057874 W EP2007057874 W EP 2007057874W WO 2008017616 A1 WO2008017616 A1 WO 2008017616A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
electric motor
spring element
recess
spring
Prior art date
Application number
PCT/EP2007/057874
Other languages
German (de)
English (en)
Inventor
Stephan Kohl
Ngoc-Thach Nguyen
Waldemar Zgraja
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 WO2008017616A1 publication Critical patent/WO2008017616A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

Definitions

  • the invention relates to an electric motor, in particular an auxiliary or servomotor for a motor vehicle. Specifically, the invention relates to an auxiliary or servomotor for power-operated adjustment of elements of a
  • an electric motor which can be designed specifically as a window or sunroof motor.
  • the known electric motor has a rotor and a stator which serve to drive a shaft.
  • the shaft is engaged with a gear.
  • a fixed bearing and, on the other hand, a movable bearing are provided, wherein the movable bearing allows a certain compensation of temperature-induced changes in length of the shaft.
  • the electric motor according to the invention with the features of claim 1 has the advantage that the stator can be easily mounted in the housing part.
  • the indirect connection of the stator with the housing part allows a certain temperature compensation and tolerance compensation when the stator and the housing part change in their size by different thermal expansion coefficients.
  • the spring element is configured as a train-pressure spring, as worm spring or as a dowel pin.
  • the tension-compression spring is preferably mounted so that in the assembled state, a load substantially in one
  • This embodiment has the advantage that a connection between the stator and the housing part with a high resistance to external influences, such as temperature influences and accelerations, can be achieved.
  • the stator and / or the housing for receiving a spring element has a recess into which the spring element is partially inserted.
  • the recess is designed as a longitudinal recess, that the spring element in its longitudinal direction has a relatively large extent and that the spring element is partially inserted into the L Lucassaus ⁇ perception.
  • a bias of the spring element in the result a relatively high connection force be applied.
  • an opening width of the longitudinal recess is smaller than a width of the spring element, wherein the width of the spring element with respect to a with respect to the
  • Longitudinal extension of the spring element is considered perpendicular cross-sectional area of the spring element.
  • a diameter of the spring element may be greater than the opening width of the longitudinal recess.
  • three or more spring elements are provided, which are preferably arranged equidistant around a circumference of the stator, so that a multi-sided connection of the stator is provided with the housing part.
  • the spring elements are preferably arranged parallel to a rotation axis of the shaft and partially inserted into suitable recesses of the stator.
  • a corresponding bias of the spring elements By a corresponding bias of the spring elements then a reliable positioning and fixing of the stator can be ensured with respect to the housing part of the housing of the electric motor. In this case, compensation for different radial thermal expansions of the stator and the housing part as well as protection against external influences is given.
  • FIG. 1 shows an electric motor in an excerpted Thomasdar- position according to an embodiment of the
  • Fig. 2 is a section through that shown in Fig. 1
  • Fig. 4 shows a partial section of a trained as a train-pressure spring spring element of the embodiment of the invention in a detailed representation
  • Fig. 5 shows an alternative embodiment of a spring element in a perspective view.
  • Fig. 1 shows an embodiment of an electric motor 1 of the invention.
  • the electric motor 1 can in particular be designed as an auxiliary or servomotor for a motor vehicle, especially as a power steering motor for an electric power steering or as a servomotor for power-operated adjustment of elements of a motor vehicle.
  • Electric motor 1 is also suitable for other applications.
  • the electric motor 1 has a housing 4 consisting of a plurality of housing parts 2, 3.
  • a stator 5, which consists of a plurality of stator blades (laminations) and a winding, and a rotor 6 are arranged, which consists of a plurality of rotor blades (laminations) and a winding or of magnets.
  • the stator 5 and the rotor 6 serve to drive a shaft 7 which is partially arranged in the housing 4 and projects out of the housing 4 at an opening 8 of the housing 4.
  • the shaft 7 has an interface 9, which is connected directly or via a transmission with elements of a servo-motor.
  • the shaft 7 is mounted in the housing 4 of the electric motor 1 via a roller bearing 10 designed as a fixed bearing and via a roller bearing 11 configured as a floating bearing.
  • the rolling bearing 10 is clamped over a flange 12 of the housing part 2, so that especially in an axial direction, i. along a rotational axis 13 of the shaft 7, no play between the housing part 2 and the rolling bearing 10 is made.
  • the roller bearing 10 is pressed onto the shaft 7 and abuts against a shoulder 14 of the shaft 7, so that there is no play along the axis of rotation 13 between the rolling bearing 10 and the shaft 7.
  • the roller bearing 11 is either pressed onto the shaft 7 or pressed into the housing part 3 of the housing 4. As a result, an adjustment of the shaft 7 in relation to the housing 4 in the direction of the axis of rotation 13 is made possible, for example, to compensate for temperature-induced changes in length of the shaft 7.
  • a positioning spring 15 acts on the roller bearing 11 with a contact force.
  • the rotor 6 is suitably connected to the shaft 7.
  • the stator 5 is indirectly connected to the housing part 2 of the housing 4.
  • the spring elements 16A to 16F have a relatively large extent in their longitudinal direction and are arranged with respect to their respective longitudinal axis 20 (FIG. 4) parallel to the axis of rotation 13 of the shaft 7.
  • the spring elements 16A to 16F are located on a cylindrical inner wall 21 of the first housing part 2 of the
  • the inner wall of the housing part 2 also has a conical section 22, wherein the inner wall in the region of the stator 5 is designed as a cylindrical inner wall 21.
  • the spring elements 16A to 16F are biased with respect to a respective associated radial direction 23, which points to the respectively considered spring element 16A to 16F and is oriented perpendicular to the axis of rotation 13. This results in a centering of the stator 5 with respect to the axis of rotation 13 of the shaft 7, so that a reliable operation of the electric motor 1 is ensured.
  • the stator 5 has a front face 24, over which the Federele ⁇ elements 16A to 16F protrude somewhat. Furthermore, the spring elements 16A to 16F project beyond an outer surface 25 of the stator 5.
  • FIG. 2 shows a section through the electric motor 1 of the exemplary embodiment of the invention shown in FIG. 1 along the section line designated by II.
  • the radial direction 23 is shown with respect to the spring element 16A.
  • the stator 5 has a plurality of recesses 26A, 26B, 26C, 26D, 26E, 26F, which are distributed equidistantly over the outer surface 25 of the stator 5.
  • the angular separation between adjacent recesses 26A to 26F thus results as a fractional value with a counter equal to 360 ° and a denominator equal to the number of recesses 26A to 26F distributed over the outer surface 25.
  • This angular distance between adjacent recesses 26A to 26F is 60 ° for this embodiment in which the number of recesses 26A to 26F is six.
  • each of the recesses 26A to 26F one of the spring members 16A to 16F is disposed, so that also, the spring elements 16A to 16F are distributed in a circumferential direction 27 equidistant over the outer surface 25.
  • the spring element 16A is biased in the radial direction 23 against the cylindrical inner wall 21.
  • the other spring elements 16 B to 16 F are biased in their respective radial direction against the cylindrical inner wall 21.
  • the recesses 26A to 26F are designed as longitudinal recesses. Furthermore, the recesses 26A to 26F on the end face 24 of the stator 5 are designed to be open, so that the spring elements 16A to 16F for mounting the electric motor 1 or for pre-assembly of the stator 5 from the end face 24 of the stator 5 ago in the recesses 26A to 26F can be introduced.
  • the number of recesses 26A to 26F equal to the number of spring members 16A to 16F is six.
  • a reliable Zentrie ⁇ tion of the stator 5 in the housing part 2 is possible.
  • the number of recesses 26A to 26F in the stator 5 and the number of the spring members 16A to 16F provided in the recesses 26A to 26F are in relation to the particular application, and specifically those expected Loads, especially external influences selected.
  • FIG. 3 shows the section of the electric motor 1 designated III in FIG. 2 in a partially sectioned illustration in further detail.
  • the spring element 16 is partially in the
  • Recess 26 D inserted, wherein it is located substantially within the recess 26 D and protrudes beyond the outer surface 25 of the stator 5. Furthermore, the recess 26D designed as a longitudinal recess widens in a bag-shaped manner with respect to its cross-section shown in FIG. 3 and has an opening width 30 which is smaller than a width 31 of the spring element 16D. The wider part of the spring element 16D is located within the recess 26D, so that the spring element 16D in the preassembled state in which the stator 5 is not yet installed in the housing part 2, not from the
  • the cross section of the spring member 16D shown in FIG. 3 is substantially circular so that the width 31 of the spring member 16D is equal to the diameter 31 of the spring member 16D.
  • the spring element 16D is introduced via the end face 24 of the stator 5 in the recess 26D.
  • the spring element 16D can also be elastically deformed and clicked into the recess 26D from the outer surface 25.
  • the spring element 16D is designed as a train-pressure spring or worm spring.
  • the spring element 16D has, in the direction of the longitudinal axis 20, an extension L1, which is preferably substantially larger than the diameter 31 of FIG.
  • Spring element 16D is. Further, an end portion 32 of the length L2 is provided, in which the spring coils are smaller in diameter and are stepped designed to facilitate the insertion of the stator 5 in the housing 4.
  • Fig. 5 shows an alternative embodiment of a spring element 16D.
  • the spring element 16D is configured essentially as a dowel pin, which has a sleeve-shaped main body 33, preferably consisting of a spring steel or of aluminum, with a longitudinal slot 34.
  • the spring element 16D can be inserted in the recess 26D in a prestressed state.
  • the embodiment of the electric motor 1, in particular the spring element 16D and the recess 26D of the stator 5, described with reference to FIGS. 3 to 5, is to be regarded as an example of an embodiment, and that the other spring elements 16A, 16B, 16C, 16E, 16F and Recesses 26A, 26B, 26C, 26E, 26F of the stator 5 can be configured accordingly.
  • the recesses 26A to 26F may also have a different cross-sectional shape and thus a different groove shape.
  • the number of recesses 26A to 26F and spring elements 16A to 16F and generally the entire geometry and the spring elements 16A to 16F serving as connecting elements are preferably designed so that a compensation of different coefficients of thermal expansion and component tolerances and thus different thermal expansions between stator 5 and housing 4 allows is. In this case, preferably within the predetermined temperature limits, a radial minimum bias of the spring elements 16A to 16F guaranteed to ensure safe positioning and centering of the stator 5 in the housing 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Un moteur électrique (1) sert en particulier comme moteur auxiliaire ou servomoteur pour un véhicule. Le moteur électrique (1) présente un rotor (6) et un stator (5) qui entraînent un arbre (7) relié au rotor (6). Le rotor (6) et le stator (5) sont logés dans un boîtier (4) qui présente au moins une partie de boîtier (2). Le stator (5) est ici disposé espacé d'une paroi intérieure cylindrique (21) de la partie de boîtier (2), une liaison entre le stator (5) et la partie de boîtier (2) ayant lieu par l'intermédiaire de plusieurs éléments élastiques (16A - 16F). Ces éléments élastiques (16A - 16F) ont de préférence la forme de ressorts de traction et de compression.
PCT/EP2007/057874 2006-08-07 2007-07-31 Moteur électrique WO2008017616A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006036836.3 2006-08-07
DE200610036836 DE102006036836A1 (de) 2006-08-07 2006-08-07 Elektromotor

Publications (1)

Publication Number Publication Date
WO2008017616A1 true WO2008017616A1 (fr) 2008-02-14

Family

ID=38683510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/057874 WO2008017616A1 (fr) 2006-08-07 2007-07-31 Moteur électrique

Country Status (2)

Country Link
DE (1) DE102006036836A1 (fr)
WO (1) WO2008017616A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2528195A4 (fr) * 2010-01-19 2017-01-18 Toyota Jidosha Kabushiki Kaisha Stator et machine électrique tournante

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7847444B2 (en) 2008-02-26 2010-12-07 Gm Global Technology Operations, Inc. Electric motor assembly with stator mounted in vehicle powertrain housing and method
DE202008015575U1 (de) * 2008-11-24 2010-04-22 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektromotor einer Antriebsanordnung in einem Kraftfahrzeug
DE102009028884A1 (de) 2009-08-26 2011-03-03 Robert Bosch Gmbh Stator-Einheit für eine elektrische Maschine und Verfahren zum Herstellen einer Stator-Einheit
DE102009029181A1 (de) 2009-09-03 2011-03-10 Robert Bosch Gmbh Spannstift zur Fixierung eines Stators in einem Gehäuse
DE102018205785A1 (de) * 2018-04-17 2019-10-17 Siemens Aktiengesellschaft Elektrische Maschine mit zumindest einem Federelement zum Halten eines Stators an einem Gehäuse sowie dazugehöriges Herstellungsverfahren
DE102019200023A1 (de) 2019-01-03 2020-07-09 Robert Bosch Gmbh Stator für eine elektrische Maschine, eine elektrische Maschine und Verfahren zum Herstellen eines solchen Stators
DE102022108755A1 (de) 2022-04-11 2023-10-12 Bayerische Motoren Werke Aktiengesellschaft Elektrische Maschine sowie Kraftfahrzeug
FR3134930A1 (fr) 2022-04-22 2023-10-27 Nidec Psa Emotors Machine électrique tournante

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525730A (en) * 1949-01-25 1950-10-10 Carnegie Illinois Steel Corp Resilient cushion utilizing sideloaded helical spring
US3414749A (en) * 1964-04-01 1968-12-03 Oerlikon Maschf Cooling and securing motor laminations
DE4334202A1 (de) * 1993-10-07 1995-04-13 Bosch Gmbh Robert Elektromotor mit einem zumindest annähernd rohrförmigen Gehäuseabschnitt
EP0957564A2 (fr) * 1998-05-02 1999-11-17 Normalair-Garrett (Holdings) Limited Combinaison d'un dispositif de stator et de rotor
DE10019512A1 (de) * 2000-02-19 2001-08-23 Bosch Gmbh Robert Motorgehäuse und Poltopf, insbesondere für Fensterheber- oder Schiebedachmotoren
WO2004062067A1 (fr) * 2002-12-27 2004-07-22 Robert Bosch Gmbh Machine electrique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525730A (en) * 1949-01-25 1950-10-10 Carnegie Illinois Steel Corp Resilient cushion utilizing sideloaded helical spring
US3414749A (en) * 1964-04-01 1968-12-03 Oerlikon Maschf Cooling and securing motor laminations
DE4334202A1 (de) * 1993-10-07 1995-04-13 Bosch Gmbh Robert Elektromotor mit einem zumindest annähernd rohrförmigen Gehäuseabschnitt
EP0957564A2 (fr) * 1998-05-02 1999-11-17 Normalair-Garrett (Holdings) Limited Combinaison d'un dispositif de stator et de rotor
DE10019512A1 (de) * 2000-02-19 2001-08-23 Bosch Gmbh Robert Motorgehäuse und Poltopf, insbesondere für Fensterheber- oder Schiebedachmotoren
WO2004062067A1 (fr) * 2002-12-27 2004-07-22 Robert Bosch Gmbh Machine electrique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2528195A4 (fr) * 2010-01-19 2017-01-18 Toyota Jidosha Kabushiki Kaisha Stator et machine électrique tournante

Also Published As

Publication number Publication date
DE102006036836A1 (de) 2008-02-14

Similar Documents

Publication Publication Date Title
WO2008017616A1 (fr) Moteur électrique
EP1797353B1 (fr) Procede de fabrication d'une transmission et transmission ainsi fabriquee
EP1961101B1 (fr) Systeme de palier pour moteur électrique et moteur électrique
DE10246711A1 (de) Getriebevorrichtung, insbesondere für Verstelleinrichtungen in Kraftfahrzeugen
EP0918671B1 (fr) Unite d'entrainement electrique
DE102019127242B4 (de) Anordnung eines Getriebes und einer Elektromaschine
DE102005059018B4 (de) Elektromotor und Verbindung zwischen einer Rotorwelle und einem Rotorblechpaket
WO2018019609A1 (fr) Dispositif d'entraînement pour un système d'entraînement de confort d'un véhicule à moteur et système d'entraînement de confort
DE102010043974A1 (de) Getriebe-Antriebseinheit
DE10336867B4 (de) Fahrzeuglenkung mit elektrischem Hilfsantrieb
EP2735088A2 (fr) Dispositif d'entraînement de transmission
EP1281884B1 (fr) Game d'arbres et procédé de leur fabrication
EP1281883B1 (fr) Game d'arbres et procédé de leur fabrication
EP1576714B1 (fr) Unit d'entraïnement pour mécanismes de commande de véhicule moteur
WO2012089418A1 (fr) Dispositif de palier pour une unité d'entraînement, et entraînement de réglage présentant un dispositif de palier
DE102006059346B4 (de) Lagersitzanordnung zur axialen und radialen Fixierung
EP2072846B1 (fr) Boîtier doté d'un arbre d'entraînement et procédé de fixation d'un moyen sur un arbre d'entraînement
DE202006019194U1 (de) Getriebeeinheit eines Verstellsystems und Gehäuse einer solchen Getriebeeinheit
DE102018204637A1 (de) Rotor einer elektrischen Maschine in Modulbauweise
EP2424083B1 (fr) Moteur électrique et son procédé de fabrication
EP1719238B1 (fr) Unite d'entrainement electrique
DE102009024830B4 (de) Elektromechanische Lenkung
DE102020215707A1 (de) Elektromotor und Verfahren zur Herstellung eines solchen Elektromotors
EP4283161A1 (fr) Train épicycloïdal pourvu de collier de palier améliorée
DE102022204120A1 (de) Servogetriebe für ein elektromechanisches Lenksystem eines Kraftfahrzeugs

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07788070

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: RU

122 Ep: pct application non-entry in european phase

Ref document number: 07788070

Country of ref document: EP

Kind code of ref document: A1