WO2009065676A2 - Machine à courant continu - Google Patents

Machine à courant continu Download PDF

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Publication number
WO2009065676A2
WO2009065676A2 PCT/EP2008/063789 EP2008063789W WO2009065676A2 WO 2009065676 A2 WO2009065676 A2 WO 2009065676A2 EP 2008063789 W EP2008063789 W EP 2008063789W WO 2009065676 A2 WO2009065676 A2 WO 2009065676A2
Authority
WO
WIPO (PCT)
Prior art keywords
brush holder
machine according
machine
brush
ribs
Prior art date
Application number
PCT/EP2008/063789
Other languages
German (de)
English (en)
Other versions
WO2009065676A3 (fr
Inventor
Jae Yong Shin
Frank Kopf
Oliver Scheib
Markus Liedel
Michael Kupferer
Michael Strupp
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 WO2009065676A2 publication Critical patent/WO2009065676A2/fr
Publication of WO2009065676A3 publication Critical patent/WO2009065676A3/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
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
    • H02K5/148—Slidably supported brushes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/06—Machines characterised by means for keeping the brushes in a retracted position during assembly

Definitions

  • the invention relates to a DC machine, in particular a DC motor for use in a motor vehicle, according to the preamble of the independent claim.
  • DC machines with a plastic brush holder are basically known, for example from DE 38 18 891 C2.
  • This document shows a DC machine with a disc-shaped, there called the base brush holder, which consists entirely of plastic and is connected in a predetermined position to the commutator of the machine fixed to the pole housing.
  • the publication only makes statements regarding the terminal lugs of the brushes, which are electrically connected and fixed to the connecting leads of the machine in a contact piece.
  • the design according to the invention has the advantage that the production and / or assembly of a DC machine can be significantly facilitated and improved by aligning the brush holder of the machine on the one hand itself exactly and permanently in the machine housing and on the other hand appropriate attachment and
  • a centered tension of the brush holder in the pole housing and thus an improvement in the positioning accuracy of the brush holder on the complained components, reduced power dispersion and noise reduction is preferably due to several similar oblique ribs or tabs, which can also be molded in one piece with the brush holder made of plastic , Due to the oblique orientation, the introduction of the brush holder into the pole housing during assembly is greatly facilitated and automatically results in the centering with respect to the pole housing.
  • a substantially rigid design of the ribs or tabs ensures a particularly tight interference fit of the brush holder, while an elastic design of the ribs or tabs, either in the form of spring tabs or in the form of flexibly connected to the brush holder ribs or tabs, even greater tolerances in alignment allows the parts during assembly.
  • centering ribs are expediently distributed over the sector of the brush holder not occupied by the brushes, essentially symmetrically with respect to the arrangement of the brushes, so that a uniform pressure is achieved when the commutator is inserted and thus give a perfect centering of a brush retaining ring used during assembly.
  • a further advantageous design possibility of the brush holder with respect to a simplification of assembly and a secure attachment of the pressure springs for the brush results when they are locked with a Z-shaped end portion at the commutator end of the brush holder.
  • Such a design of the spring end ensures on the one hand the independent alignment of the spring when attached to the brush holder, on the other hand is ensured by the Z-shape secure locking during operation.
  • the locking and adjustment of the Bürstenand Wegfeder here can be further improved if the Z-shaped end portion of the pressure spring has an opening for the passage of a positioning pin on the brush holder. In this way, the pressure spring is kept accurate.
  • Brush holder on the pole housing it is advantageous if this has a mounting flange at its periphery, which is only selectively attached to flexible elements of the base plate of the brush holder, which has recesses for deflections in this area.
  • Mounting flange is clamped between the pole housing and the adjacent bearing cap and the brush holder thereby largely decoupled from the metal housing of the machine, which on the one hand different thermal expansion on the pole housing and the brush holder can be formed individually, without deforming the plastic brush holder.
  • this design in addition a noise decoupling between the brush holder and the housing, since vibrations be transferred to the brush holder only to a limited extent on the housing.
  • FIG. 2 is a schematic sectional view of the pole housing and the brush holder to be inserted, with a centering rib formed on its edge;
  • Figure 3 is a partial perspective view of
  • FIG. 4 shows an overall perspective view of the unpopulated brush holder
  • Figure 5 is a partial perspective view of
  • Brush holder in the area of the brush quiver Figure 6 is a plan view of one with brushes and
  • Figure 7 is a partial perspective view of
  • FIG. 1 is denoted by 10 a DC machine in the embodiment as a DC motor for use in a motor vehicle.
  • the machine has a cup-shaped pole housing 12, which is closed on one side by a bearing cap 14. Within the pole housing 12 is a
  • Stator 16 formed by permanent magnets 18 which are fixed to the pole housing 12 in a known manner.
  • a rotor 20 of the machine sits on a shaft 22, which is rotatably mounted on the one hand in the pole housing 12 and on the other hand in the bearing cap 14.
  • a commutator 24 is further arranged, which is supplied via brushes 26, the excitation current for the rotor 20.
  • the brushes 26 and other components, in particular the required interference suppression of the machine, are on one
  • Brush holder 28 held.
  • a suppression choke 30 and a capacitor 32 can be seen in FIG.
  • the locking of the brush holder 28 in the pole housing 12 is effected by a mounting flange 34 which extends over the entire circumference of the brush holder and is clamped between the pole housing 12 and the bearing cap 14 in the fully assembled state of the machine.
  • a mounting flange 34 which extends over the entire circumference of the brush holder and is clamped between the pole housing 12 and the bearing cap 14 in the fully assembled state of the machine.
  • Figure 2 shows a schematic representation of the pole housing 12 of the machine and the brush holder to be arrested 28.
  • wall portions 46 At sections on the circumference of the brush holder 28 formed wall portions 46 a plurality of similar oblique ribs 48 are formed, usually three ribs for proper centering of the brush holder 28 in the pole housing 12 suffice.
  • Ribs 48 the centering of the brush holder 28 when inserted into the pole housing 12 significantly easier and depending on the design of the skew a more or less strong interference fit of the brush holder 28 in the pole housing 12 achieved.
  • the brush holder 28 in the arrangement according to FIG. 3 has resilient tabs 50, which on the one hand are elastically formed and, on the other hand, additionally elastically held on a bow-shaped wall section 46.
  • the tabs 50 may be formed obliquely similar to the ribs 48 in Figure 2 or they have at their free end a projection 52 which resiliently applied to the inner wall of the pole housing 12.
  • Figure 4 shows a perspective view of the unpopulated brush holder 28.
  • its base plate 54 has a plurality of mounting recesses 56 for mounting a variable number of brush quivers not shown in this figure.
  • the brush holder 28 according to Figure 4 has four Be Glaungsaussparitch 56 of which, depending on the design of the DC machine optionally two, three or four can be fitted in a known manner with brush holders 28. By fitting variants on the basis of the same base plate 54, the variety of components can be significantly reduced.
  • FIG. 6 shows a plan view of a brush holder 28 equipped with brushes 26 and suppressor components 30, 31 and 32, from which the distribution of the component components on the brush carrier can be seen.
  • the illustration shows that the mounting recesses 56 for the
  • Brush holder 28 are arranged on the base plate 54, that the brush in a first, approximately over the upper half of the base plate extending sector and the electrical interference suppression means 30, 31, 32 in a second Sector on the lower half of the base plate 54 lie.
  • EMC electromagnetic compatibility
  • centering ribs 72 In the lower region of the central opening 68 in the brush holder 28, three centering ribs 72 can be seen, which protrude approximately equally into the central opening 68 of the brush holder 28 as the brushes 26 even with their contacting support on the commutator 24, not shown in FIG Design is indicated by a dashed circle 74. In this way, the centering of a in its design substantially the dashed line 74 corresponding insertion aid for introducing the commutator 24 in the central opening 68 in the brush holder 28 is significantly facilitated. For reasons of symmetry, the centering ribs 72 are distributed uniformly over the lower sector of the brush holder 28, which is not occupied by the brushes 26.
  • the design of the mounting flange 34 for the brush holder 28 is still shown in Figure 6, which extends over the entire circumference of the brush holder 28, but this is only selectively connected via a plurality of circumferentially distributed webs 88.
  • the mounting flange 34 and the webs 88 are molded in one piece with the brush holder 28 made of plastic.
  • the flange 34 between the edge of the pole housing 12 and the firmly clamped opposite edge of the bearing cap 14, whereby a secure support and exact positioning of the brush holder 28 are ensured.
  • Brush carrier body largely decoupled from the pole housing 12, so that different thermal expansion of the brush holder 28 and the pole housing 12 can form individually, without the base plate 54 of the brush holder 28 bends. In addition, one is created
  • Figure 7 shows a partial perspective view of
  • Brush holder 28 in the region of a brush 26, from which the arrangement of a trained as a roll spring spring 76 for pressing the brush 26 to the commutator 24 can be seen.
  • the spring protrudes with its rolled end 78 into the brush holder 64 and presses the brush 26 in the direction of the commutator, with its commutator 24 facing Z-shaped end portion, it surrounds the brush holder 64 and is latched to it.
  • the Z-shaped end portion 80 of the spring 76 still has an opening 82 for the passage of a positioning pin 84 on

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)
  • Dc Machiner (AREA)

Abstract

L'invention concerne une machine à courant continu, en particulier un moteur à courant continu (10) destiné à être mis en oeuvre dans un véhicule automobile. La machine à courant continu selon l'invention comprend un bâti (12), un stator (18) placé sur le bâti, un rotor (20) logé à rotation dans le bâti (12) et présentant un collecteur (24), ainsi qu'un porte-balais (28) fabriqué pour l'essentiel en plastique et servant à la fixation d'au moins deux balais (26) ainsi que d'autres éléments (30, 31; 32). Selon l'invention, le porte-balais (28) présente des moyens servant à améliorer et/ou à faciliter la fabrication et/ou le montage de la machine.
PCT/EP2008/063789 2007-11-22 2008-10-14 Machine à courant continu WO2009065676A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710056325 DE102007056325A1 (de) 2007-11-22 2007-11-22 Gleichstrommaschine
DE102007056325.8 2007-11-22

Publications (2)

Publication Number Publication Date
WO2009065676A2 true WO2009065676A2 (fr) 2009-05-28
WO2009065676A3 WO2009065676A3 (fr) 2010-01-28

Family

ID=40410543

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/063789 WO2009065676A2 (fr) 2007-11-22 2008-10-14 Machine à courant continu

Country Status (2)

Country Link
DE (1) DE102007056325A1 (fr)
WO (1) WO2009065676A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3083028B1 (fr) * 2018-06-25 2020-09-04 Valeo Equip Electr Moteur Demarreur comprenant un porte balai centre sur la culasse

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026432A (en) * 1960-07-01 1962-03-20 Ford Motor Co Dynamoelectric machine
JPS58144552A (ja) * 1982-02-22 1983-08-27 Matsushita Seiko Co Ltd 小型電動機
EP0257407A1 (fr) * 1986-08-27 1988-03-02 SWF Auto-Electric GmbH Machine électrique, en particulier moteur électrique
US5237231A (en) * 1989-10-19 1993-08-17 General Electric Company Structured product dynamoelectric machine
US5650676A (en) * 1992-10-24 1997-07-22 Licentia Patent-Verwaltungs-Gmbh Electric motor with improved seal
DE10309724A1 (de) * 2003-03-06 2004-09-16 Pierburg Gmbh Halteeinrichtung für Schleifkontakte sowie Elektromotor
US20040241009A1 (en) * 1999-10-25 2004-12-02 Dieter Dinkel Motor pump aggregate
DE102005000120A1 (de) * 2005-09-20 2007-03-22 Hilti Ag Elektromotor mit Bürstenplatte

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH038073Y2 (fr) 1987-06-10 1991-02-27

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026432A (en) * 1960-07-01 1962-03-20 Ford Motor Co Dynamoelectric machine
JPS58144552A (ja) * 1982-02-22 1983-08-27 Matsushita Seiko Co Ltd 小型電動機
EP0257407A1 (fr) * 1986-08-27 1988-03-02 SWF Auto-Electric GmbH Machine électrique, en particulier moteur électrique
US5237231A (en) * 1989-10-19 1993-08-17 General Electric Company Structured product dynamoelectric machine
US5650676A (en) * 1992-10-24 1997-07-22 Licentia Patent-Verwaltungs-Gmbh Electric motor with improved seal
US20040241009A1 (en) * 1999-10-25 2004-12-02 Dieter Dinkel Motor pump aggregate
DE10309724A1 (de) * 2003-03-06 2004-09-16 Pierburg Gmbh Halteeinrichtung für Schleifkontakte sowie Elektromotor
DE102005000120A1 (de) * 2005-09-20 2007-03-22 Hilti Ag Elektromotor mit Bürstenplatte

Also Published As

Publication number Publication date
WO2009065676A3 (fr) 2010-01-28
DE102007056325A1 (de) 2009-05-28

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