WO2009033857A1 - Moteur électrique - Google Patents

Moteur électrique Download PDF

Info

Publication number
WO2009033857A1
WO2009033857A1 PCT/EP2008/059237 EP2008059237W WO2009033857A1 WO 2009033857 A1 WO2009033857 A1 WO 2009033857A1 EP 2008059237 W EP2008059237 W EP 2008059237W WO 2009033857 A1 WO2009033857 A1 WO 2009033857A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature shaft
transmission housing
armature
ball bearing
electric motor
Prior art date
Application number
PCT/EP2008/059237
Other languages
German (de)
English (en)
Inventor
Armin Stubner
Jun Tao
Marco Saettele
Matthias Koesters
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
Priority to CN200880106512A priority Critical patent/CN101803153A/zh
Priority to EP08775096A priority patent/EP2201665A1/fr
Publication of WO2009033857A1 publication Critical patent/WO2009033857A1/fr

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
    • H02K7/08—Structural association with bearings
    • H02K7/081—Structural association with bearings specially adapted for worm gear drives

Definitions

  • the invention is based on an electric motor according to the preamble of claim 1.
  • a generic electric motor in which an armature shaft on which an armature packet is firmly seated, on the one hand by means of a ball bearing in a pole housing and on the other hand rotatably mounted by means of a further ball bearing in a transmission housing.
  • a worm On the free end of the armature shaft, a worm is cut, which meshes with a worm wheel.
  • the worm gear generates axial forces in the longitudinal direction of the armature shaft, which are transmitted via the ball bearings to the pole housing or the gear housing, in each case by supporting the outer bearing ring of the corresponding ball bearing with an end face on a shoulder of the pole housing or gear housing.
  • the outer bearing rings of the ball bearings are supported by spring elements with respect to the housings.
  • a spring element is provided which pushes the armature shaft with the armature stack against the gear-side ball bearing whose outer bearing ring is supported directly in the gear housing. While the outer bearing rings of the ball bearings with sliding fit are inserted in the housings, the inner bearing rings sit on the armature shaft and are supported axially towards the anchor packet via a collar.
  • an electric motor in particular for windshield wipers, in which the armature shaft is rotatably mounted on each side of the armature packet rotatably in a housing of the electric motor or in a gear housing for the worm.
  • One of the two armature shaft bearings preferably the transmission housing side bearing, is a ball bearing, the inner ring is pressed onto the axial fixing of the armature shaft to this.
  • the outer ring of the armature shaft bearing is inserted in a bearing seat in the housing and secured axially by means of a spring ring inserted into a groove in the housing.
  • the outer bearing ring of the gear-side ball bearing is supported towards the anchor packet on transverse pins, which are inserted in a plane perpendicular to the armature shaft extending into the gear housing and enclose the armature shaft between them.
  • this ball bearing is designed as a fixed bearing, while the bearing on the side of the Polgeophuses is a floating bearing.
  • the fastening elements, the transverse pins can be mounted perpendicular to the armature shaft.
  • a significantly stiffer ball bearing fixation in operation in particular in the main load direction, whereby axial forces of over 1500 N can be supported.
  • the ball bearing deflection or the armature deflection during operation in the main load direction is lower than in the prior art.
  • the concept is also suitable for fixing an armature assembly in which the ball bearing is already positively and positively connected to the armature shaft in the transmission housing on the ball bearing.
  • Fig. 2 is a simplified cross-section along the line II-II in Fig. 1 and Fig. 3 to 5 different cross-sectional variants of the transverse pins.
  • an electric motor 10 is shown only schematically, to the extent necessary to understand the invention.
  • the electric motor 10 has an armature packet 12 which is mounted on an armature shaft 14.
  • the latter is rotatably mounted on both sides of the armature pack 12 by means of ball bearings 24 and 40 in a gear housing 20 or in a pole housing 22.
  • a screw 16 is fixed, which may be integrally formed integrally on the armature shaft 14 in the usual manner or as a separate component with the armature shaft 14 fixedly connected.
  • the worm 16 generates forces in the longitudinal direction 18. These axial forces are transferred to the transmission housing 20 via the ball bearing 24, while the ball bearing 40 transmits only radial forces to the pole housing 22 as a movable bearing.
  • the ball bearings 24, 40 have inner bearing rings 28, 44 which are pressed onto the armature shaft 14.
  • the inner bearing ring 28 of the gear-side ball bearing 24 may be additionally secured axially to the anchor assembly 12 by a spring ring 32.
  • the axial forces in the longitudinal direction 18 are transmitted via bearing balls 26, 42 on outer bearing rings 30, 46, which are used with sliding seats in bearing seats 34, 50 of the gear housing 20 and the pole housing 22.
  • the outer bearing ring 30 of the transmission housing-side ball bearing 24 is supported aaxially via a spring element 36 in the form of a plate spring on a shoulder 38 of the transmission housing 20, while the oppositely directed end face of the outer bearing ring 30 is supported on transverse pins 54, which run in a plane perpendicular to the armature shaft 14 and enclose them between them.
  • the spring element 36 which serves to compensate for the bearing play can also be provided between the outer bearing ring 30 and the transverse pins 54.
  • the spring element 36 is designed so that it holds the ball bearing 24 in a play-free state under all operating conditions, so that even with a change of direction of the electric motor 10 no system change takes place in the ball bearing 24. This will be
  • the outer bearing ring 46 of the pole housing-side ball bearing 40 is supported only radially on the pole housing 22.
  • the ball bearing 40 can be replaced by a plain bearing.
  • cross pins are cylindrical pins 54 which are pressed into the gear housing 20, spring pins 56 or grooved pins 58. Furthermore, a tolerance and clearance compensation by integration of a spring element 36, for example in the form of a wave washer, a coil spring or disc spring, between the outer bearing ring 30th and the transmission housing 20 or the transverse pins 54, 56, 58 possible.
  • the transverse pins may have different cross-sectional shapes, for example, the cylindrical pins 54 have a cylindrical outer contour and are pressed into the transmission housing 20.
  • the spring pins 56 which are formed from spring steel, have a longitudinal slot 60. They are slightly compressed during assembly and are resilient against their mounting holes. Furthermore, the grooved pins 58 have longitudinal notches 62 on their circumference.
  • the protruding tips deform plastically and fill in the gaps.
  • a corrugated surface structure can also be provided.
  • the transverse pins 54, 56, 58 generally run parallel to one another in the common cross-sectional plane. However, you can also make an angle with each other so that the distance from each other at one end is greater than the distance at the other end. As a result, the attachment of the ball bearing can be better adapted to the structural conditions of the electric motor.

Landscapes

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

Abstract

L'invention concerne un moteur électrique (10) comprenant un noyau d'induit (12) monté claveté sur un arbre d'induit (14), dont une extrémité est montée tournante, par l'intermédiaire d'un roulement à billes (24), dans un carter de boîte de vitesses (20), et dont l'autre extrémité, en saillie hors du carter (20), est liée solidaire avec une vis sans fin (16), une bague de palier intérieure (28) étant montée sur l'arbre d'induit (14), cependant qu'une bague de palier extérieure (30) du roulement à billes côté boîte (24) est insérée, par une portée coulissante, dans le carter de boîte (20), et prend appui en direction de la vis sans fin (16), axialement sur ledit carter de boîte (20). L'invention est caractérisée en ce que la bague de palier extérieure (30) du roulement à bille côté boîte (24) prend appui, en direction du noyau d'induit (12), sur des goujons transversaux (54, 56, 58) qui sont insérés dans le carter de boîte (20) en s'étendant dans un plan perpendiculaire à l'arbre d'induit (14) et enfermant ce dernier (14) entre eux.
PCT/EP2008/059237 2007-09-12 2008-07-15 Moteur électrique WO2009033857A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880106512A CN101803153A (zh) 2007-09-12 2008-07-15 电动机
EP08775096A EP2201665A1 (fr) 2007-09-12 2008-07-15 Moteur électrique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007043527.6 2007-09-12
DE200710043527 DE102007043527A1 (de) 2007-09-12 2007-09-12 Elektromotor

Publications (1)

Publication Number Publication Date
WO2009033857A1 true WO2009033857A1 (fr) 2009-03-19

Family

ID=39769403

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/059237 WO2009033857A1 (fr) 2007-09-12 2008-07-15 Moteur électrique

Country Status (4)

Country Link
EP (1) EP2201665A1 (fr)
CN (1) CN101803153A (fr)
DE (1) DE102007043527A1 (fr)
WO (1) WO2009033857A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103616105A (zh) * 2013-11-27 2014-03-05 天津大学 可检测传动力并进行传动的装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006345A1 (de) * 2010-01-30 2011-08-04 Metabowerke GmbH, 72622 Anker für ein Elektrohandwerkzeuggerät
DE102011078257A1 (de) * 2011-06-29 2013-01-03 Robert Bosch Gmbh Getriebe-Antriebseinheit
DE102013209202A1 (de) 2013-05-17 2014-11-20 Robert Bosch Gmbh Antriebseinrichtung, insbesondere Stelleinrichtung in einem Fahrzeug
EP3320977B1 (fr) * 2016-11-14 2021-07-07 Alfdex AB Boîtier de séparateur centrifuge

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060044A1 (fr) * 2005-11-25 2007-05-31 Robert Bosch Gmbh Unite d'entrainement electrique, notamment moteur electrique avec boite de vitesses

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727119C1 (de) 1997-06-26 1998-07-16 Bosch Gmbh Robert Elektrische Antriebseinheit
DE10259710A1 (de) 2002-12-19 2004-07-15 Robert Bosch Gmbh Elektrische Maschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060044A1 (fr) * 2005-11-25 2007-05-31 Robert Bosch Gmbh Unite d'entrainement electrique, notamment moteur electrique avec boite de vitesses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103616105A (zh) * 2013-11-27 2014-03-05 天津大学 可检测传动力并进行传动的装置
CN103616105B (zh) * 2013-11-27 2015-07-22 天津大学 可检测传动力并进行传动的装置

Also Published As

Publication number Publication date
EP2201665A1 (fr) 2010-06-30
DE102007043527A1 (de) 2009-03-19
CN101803153A (zh) 2010-08-11

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