EP0615316A2 - Porte-balai pour un moteur électrique avec commuté mécanique - Google Patents

Porte-balai pour un moteur électrique avec commuté mécanique Download PDF

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Publication number
EP0615316A2
EP0615316A2 EP94102266A EP94102266A EP0615316A2 EP 0615316 A2 EP0615316 A2 EP 0615316A2 EP 94102266 A EP94102266 A EP 94102266A EP 94102266 A EP94102266 A EP 94102266A EP 0615316 A2 EP0615316 A2 EP 0615316A2
Authority
EP
European Patent Office
Prior art keywords
commutator
guide
pressure spring
brush holder
support plate
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.)
Granted
Application number
EP94102266A
Other languages
German (de)
English (en)
Other versions
EP0615316A3 (fr
EP0615316B1 (fr
Inventor
Hugo Herrmann
Werner Decker
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 EP0615316A2 publication Critical patent/EP0615316A2/fr
Publication of EP0615316A3 publication Critical patent/EP0615316A3/fr
Application granted granted Critical
Publication of EP0615316B1 publication Critical patent/EP0615316B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/41—Brush holders cartridge type
    • H01R39/415—Brush holders cartridge type with self-recoiling spring

Definitions

  • the invention relates to a brush holder according to the preamble of the main claim.
  • a brush holder is already known (EP-OS 0 397 973), in which, in order to mount the brush holder, the pressure spring with its section located between the rollers must be guided through the guide quiver, so that spring sections are located between the inner wall of the holder and the grinding brush are located. Such an assembly is cumbersome and therefore expensive.
  • the brush holder according to the invention with the characterizing features of the main claim has the advantage that the pressure spring can be pushed over the open edge side of the slots into its working position in which the central portion of the pressure spring located between the rollers lies in the recesses in the side walls of the guide quiver is coming.
  • FIG. 1 shows a plan view of a brush support plate with two grinding brushes arranged in guide pockets, of which a guide holder and the grinding brush are shown in section
  • FIG. 2 shows the guide holder shown in section in section, in enlarged view
  • FIG. 3 shows the guide holder according to FIG Shown from below
  • FIG. 4 shows the guide holder according to FIG. 2 along the line IV-IV
  • FIG. 5 shows a view of the guide holder in the direction of arrow V in FIG. 4
  • FIG. 6 shows an exploded view of a brush holder, a grinding brush assigned to it and an associated pressure spring .
  • a brush holder 10 shown in FIG. 1 belongs to a mechanically commutated electric motor, not shown. It has a support plate 12 fixedly connected to the frame or the housing of the motor, to which two shaft-like guide quivers 14 and 16 are fastened in the exemplary embodiment.
  • a grinding brush 18 is slidably disposed in the shafts of the two guide quivers 14 and 16.
  • the guide quiver 14 and 16 are oriented such that the direction of displacement for the grinding brushes 18 is approximately radial to a commutator 20 of the electric motor, indicated by dash-dotted lines in FIG.
  • On the support plate 12 there are further contact points 22 to which lead cables 24 belonging to the working circuit of the electric motor. Brush strands 26 lead from the contact points 22 to the grinding brushes 18.
  • the guide quiver 16 has a tubular cross section which is essentially rectangular to square in cross section. This can be seen in particular from FIG. 3. With its rear wall 27, it faces the support plate 12 and is connected to it in a manner known per se via bending tongues 28.
  • the rear wall 27 is adjoined by two side walls 30 (FIG. 3), which extend transversely to the plane of the support plate 12 when the guide quiver 16 is mounted.
  • the two side walls 30 merge into a front wall 32 which is at a distance from the rear wall 27 and extends substantially parallel to the latter.
  • the cross-sectional shape of the abrasive brush 18 is matched to the resulting cross-sectional shape of the interior of the shaft in such a way that it can be displaced in the direction of the shaft axis without substantial play.
  • the grinding brush 18 lies against the jacket of the commutator 20 with a grinding surface 34 (FIG. 6).
  • Correct contact of the grinding brush 18 on the commutator of the electric motor is achieved by a pressure spring 40, which is shown in FIG. 6.
  • the pressure spring 40 is designed as a strip-shaped leaf spring, the two end sections of which are rolled up in opposite directions so that rollers 42 result.
  • the guide quiver 16 each has a cutout 50 in its side walls 30, which extends from that of Commutator 20 facing away from the end of the guide quiver 16 is open.
  • the cutouts 50 are formed in that support legs 52 are sheared out and bent out of the side walls 30.
  • the depth 53 of the recesses extends beyond the center of the length of the quiver 16.
  • Their width 54 is at least as large as the width 56 of the pressure spring 40.
  • the legs 52 which are bent out of the side walls 30 serve to support the rollers 42 of the pressure spring 40.
  • Each support leg 52 has a slot 58 in the transition area to its side wall (FIG. 3), whose depth 60 is at least as large as the width 56 of the pressure spring 40. It is clear that the depth 60 of the slots 58 is always smaller than the width of the legs 52, which results from the width 54 of the recesses 50.
  • the slots 58 are open to the edge on the side of the support legs 52 facing away from the support plate 12.
  • One longitudinal side of the slots 58 is open to the recess 50 located in its side wall 30, so that the slots 58 merge into the recesses 50 adjacent to them.
  • the length 62 of the legs 52 is dimensioned such that it is greater than the radius of the rollers 42.
  • the free end sections of the legs are bent in such a way that their free ends point approximately towards the commutator 20.
  • FIGS. 2, 3 and 5 in particular show that the arrangement of tabs on the longitudinal edges of the support legs 52 has already been taken into account when pulling out, which, as can be seen from the figures mentioned, are placed up to the commutator 20 and guide stops 64 for the rollers 42 form.
  • FIGS. 1 and 2 also show that the front wall 32 of the guide sleeve 16 has a passage slot 66 for the strand 26, which is open at the edge on the side of the guide sleeve 16 facing away from the commutator
  • the pressure spring 40 is pushed into the slots 58 until it abuts the end edge of the slots 58.
  • care must be taken that the rollers 42 come to rest on the support surfaces 78 of the legs 52 facing the commutator 20.
  • the pressure spring is secured between the end edges of the slots 58 and the guide stops (tab 64) facing them.
  • the central section 44 of the pressure spring 40 bears against the end face 48 of the grinding brush 18.
  • the partially rolled-up rollers 42 now result in a pretension, by means of which the grinding brush is spring-loaded in the direction of the arrow 70 towards the commutator 20.
  • the assembly of the brush holder according to the invention is comparatively simple because the pressure spring 40 no longer has to be threaded through the shaft of the guide quiver, but because it can only be installed from the outside in the direction of arrow 75. In its assembly position, it then lies with its U-legs 76 in the recesses 50 of the side walls 30. As the abrasive brush 18 progressively wears, the current-carrying wire 26 passes ever deeper into the lead-through slot 66, in which you already insert the abrasive brush 18 during the assembly described enters the guide quiver 16.
  • EP 0 397 973 A2 already mentioned at the beginning, which was assumed when the claim was drawn up and whose disclosure thus becomes the disclosure of the present application for industrial property rights.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
EP94102266A 1993-03-10 1994-02-15 Porte-balai pour un moteur électrique commuté mécaniquement Expired - Lifetime EP0615316B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4307451 1993-03-10
DE4307451A DE4307451A1 (de) 1993-03-10 1993-03-10 Bürstenhalter für mechanisch kommutierte Elektromotoren

Publications (3)

Publication Number Publication Date
EP0615316A2 true EP0615316A2 (fr) 1994-09-14
EP0615316A3 EP0615316A3 (fr) 1994-10-26
EP0615316B1 EP0615316B1 (fr) 1997-05-28

Family

ID=6482359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94102266A Expired - Lifetime EP0615316B1 (fr) 1993-03-10 1994-02-15 Porte-balai pour un moteur électrique commuté mécaniquement

Country Status (4)

Country Link
US (1) US5397952A (fr)
EP (1) EP0615316B1 (fr)
DE (2) DE4307451A1 (fr)
ES (1) ES2102079T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001878A1 (fr) * 1995-06-28 1997-01-16 Siemens Electric Limited Ensemble porte-balai comportant de nouveaux porte-balai
US5773907A (en) * 1994-04-28 1998-06-30 Siemens Canada Ltd. Brush holder assemblies having novel brush holders
EP0881754A1 (fr) * 1997-05-30 1998-12-02 Valeo Systemes D'essuyage Cage pour balai de moteur électrique à ailettes de refroidissement

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2850768B2 (ja) * 1994-09-30 1999-01-27 アスモ株式会社 ブラシ装置
US5818142A (en) * 1995-07-27 1998-10-06 Black & Decker Inc. Motor pack armature support with brush holder assembly
US5753992A (en) * 1996-11-07 1998-05-19 Delco Remy America Inc Single piece brush fixture for dynamoelectric machine
US5808393A (en) * 1997-05-23 1998-09-15 Mpc Products Corporation Brush holder for producing a constant brush pressure
JP3251597B2 (ja) * 1997-05-26 2002-01-28 三菱電機株式会社 ブラシ保持装置
US5955802A (en) * 1997-12-19 1999-09-21 Black & Decker Inc. Reversing mechanism for electric motors
DE19858233A1 (de) * 1998-12-17 2000-06-29 Bosch Gmbh Robert Elektrischer Getriebemotor für Fahrzeugaggregate
US6144134A (en) * 1999-10-15 2000-11-07 Lin; Shoei-Cherng Structure hidden mount for electric motor carbon brushes
FR2810168B1 (fr) * 2000-06-08 2005-06-17 Meritor Light Vehicle Sys Ltd Moteur electrique notamment motoreducteur pour l'activation d'equipements fonctionnels de vehicules
US6617744B2 (en) * 2000-08-23 2003-09-09 Siemens Vdo Automotive Inc. DC motor brush card assembly having attaching structures and multiple choke coils with elongated portions
JP3940046B2 (ja) * 2002-07-19 2007-07-04 アスモ株式会社 ブラシ装置
US6707220B1 (en) 2003-02-12 2004-03-16 Siemens Vdo Automotive, Inc. Electric motor brush holder for suppressing audible and electromagnetic noise
US6909218B2 (en) * 2003-02-26 2005-06-21 Black & Decker Inc. End cap and brush box assembly
US7235005B2 (en) * 2005-03-24 2007-06-26 Black & Decker Inc. Belt sander
US7410412B2 (en) * 2005-01-21 2008-08-12 Black & Decker Inc. Belt sander
US7503838B2 (en) 2005-03-24 2009-03-17 Black & Decker Inc. Belt sander
ATE412997T1 (de) 2005-11-18 2008-11-15 Metabowerke Gmbh Bürstenhalter für elektromotor eines werkzeuggeräts
US7466056B2 (en) * 2006-10-06 2008-12-16 Remi International, Inc Dynamoelectric machine brush holder assembly and method
US20080084133A1 (en) * 2006-10-06 2008-04-10 Steven Burton Dynamoelectric machine brush and method
US7696666B2 (en) * 2006-10-06 2010-04-13 Remy Technologies, L.L.C. Dynamoelectric machine grommet
US7705512B2 (en) * 2006-10-06 2010-04-27 Remy International, Inc. Dynamoelectric machine conductor
US8618943B2 (en) 2007-05-24 2013-12-31 Cutsforth, Inc. Brush holder assembly monitoring apparatus, assembly, system and method
US7402933B1 (en) * 2007-08-16 2008-07-22 Phoenix Electric Mfg. Co. Constant force modular integrated internal brush holder
US20090085425A1 (en) * 2007-09-27 2009-04-02 Wen-Chia Chang Flat Spring and Voice Coil Motor using the same
DE102007053272A1 (de) * 2007-11-08 2009-05-14 Robert Bosch Gmbh Antriebseinheit
DE102007056323A1 (de) * 2007-11-22 2009-05-28 Robert Bosch Gmbh Gleichstrommaschine
CN101540466B (zh) 2008-02-04 2012-10-03 德昌电机(深圳)有限公司 用于电机的碳刷组件及电机
CN102651587B (zh) * 2011-02-25 2017-11-07 德昌电机(深圳)有限公司 引擎冷却系统及其冷却模组和电机
US8446062B2 (en) * 2011-08-08 2013-05-21 Wabtec Holding Corp. Brush holder assemblies
US9099827B2 (en) 2012-03-14 2015-08-04 Cutsforth, Inc. Brush holder marking system and associated maintenance
US9178327B2 (en) 2012-03-14 2015-11-03 Cutsforth, Inc. Brush lead guide for a brush holder assembly
US9252643B2 (en) 2013-03-14 2016-02-02 Cutsforth, Inc. System and method for monitoring the status of one or more components of an electrical machine
JP6212283B2 (ja) * 2013-05-23 2017-10-11 マブチモーター株式会社 モータおよび移動規制構造の製造方法
CN103746498B (zh) * 2013-11-21 2017-02-08 珠海凯邦电机制造有限公司 稳压泵用电机的后端盖结构
CN105099050B (zh) * 2014-04-18 2020-02-18 德昌电机(深圳)有限公司 电刷组件及包括其的电机
FR3032840B1 (fr) * 2015-02-13 2018-04-13 Valeo Equip Electr Moteur Porte-balais
WO2016196484A1 (fr) 2015-06-01 2016-12-08 Cutsforth, Inc. Surveillance de l'usure et des vibrations d'un balai
US9853407B2 (en) * 2015-09-08 2017-12-26 Helwig Carbon Products, Inc. Brush assembly
US10371726B2 (en) 2016-01-11 2019-08-06 Cutsforth, Inc. Monitoring system for grounding apparatus
DE102016215552A1 (de) * 2016-08-18 2018-02-22 Robert Bosch Gmbh Bürstenträgereinrichtung für einen Elektromotor, Elektromotor und Verfahren zur Montage eines Elektromotors
US11355991B2 (en) 2018-10-04 2022-06-07 Cutsforth, Inc. System and method for monitoring the status of one or more components of an electrical machine
EP3861605A1 (fr) 2018-10-04 2021-08-11 Cutsforth, Inc. Système et procédé pour surveiller l'état d'un ou plusieurs composant(s) d'une machine électrique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430084A (en) * 1966-07-06 1969-02-25 Rockwell Mfg Co Electric motor and brush assembly for a portable tool
US4371803A (en) * 1980-09-29 1983-02-01 The Singer Company Commutator brush holder quadrature spring
US4800313A (en) * 1987-10-29 1989-01-24 General Signal Corporation Long-life motor brush holder
EP0397973B1 (fr) * 1989-05-16 1995-05-10 Asmo Co., Ltd. Structure de porte-balai pour moteur

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US3127533A (en) * 1961-02-24 1964-03-31 Gen Motors Corp Brush lead connection for dynamoelectric machine
US3277325A (en) * 1964-02-12 1966-10-04 G I Company Brush holder mechanism for electric motor
US3430915A (en) * 1966-05-16 1969-03-04 Ametek Inc Non-cumulative force electric motor or generator brush spring
US3983432A (en) * 1975-04-22 1976-09-28 Alexander Rankin Brush holder assembly
US4389588A (en) * 1982-03-24 1983-06-21 Alexander Rankin Current carrying constant force brush holder assembly
US5059846A (en) * 1991-01-22 1991-10-22 General Motors Corporation Brush holding apparatus for a dynamoelectric machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430084A (en) * 1966-07-06 1969-02-25 Rockwell Mfg Co Electric motor and brush assembly for a portable tool
US4371803A (en) * 1980-09-29 1983-02-01 The Singer Company Commutator brush holder quadrature spring
US4800313A (en) * 1987-10-29 1989-01-24 General Signal Corporation Long-life motor brush holder
EP0397973B1 (fr) * 1989-05-16 1995-05-10 Asmo Co., Ltd. Structure de porte-balai pour moteur

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5689148A (en) * 1994-04-28 1997-11-18 Siemens Electric Limited Multi-pole, two-speed brush holder assembly
US5773907A (en) * 1994-04-28 1998-06-30 Siemens Canada Ltd. Brush holder assemblies having novel brush holders
WO1997001878A1 (fr) * 1995-06-28 1997-01-16 Siemens Electric Limited Ensemble porte-balai comportant de nouveaux porte-balai
EP0881754A1 (fr) * 1997-05-30 1998-12-02 Valeo Systemes D'essuyage Cage pour balai de moteur électrique à ailettes de refroidissement
FR2764132A1 (fr) * 1997-05-30 1998-12-04 Valeo Systemes Dessuyage Cage pour balai de moteur electrique a ailettes de refroidissement
US6229242B1 (en) 1997-05-30 2001-05-08 Valeo Systemes D'essuvage Case for electric motor brushes comprising cooling fins

Also Published As

Publication number Publication date
US5397952A (en) 1995-03-14
EP0615316A3 (fr) 1994-10-26
DE4307451A1 (de) 1994-09-15
DE59402866D1 (de) 1997-07-03
EP0615316B1 (fr) 1997-05-28
ES2102079T3 (es) 1997-07-16

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