EP0098991A1 - Dispositif de porte-balais pour machines électriques - Google Patents

Dispositif de porte-balais pour machines électriques Download PDF

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Publication number
EP0098991A1
EP0098991A1 EP83105918A EP83105918A EP0098991A1 EP 0098991 A1 EP0098991 A1 EP 0098991A1 EP 83105918 A EP83105918 A EP 83105918A EP 83105918 A EP83105918 A EP 83105918A EP 0098991 A1 EP0098991 A1 EP 0098991A1
Authority
EP
European Patent Office
Prior art keywords
brush
brush holder
busbar
receptacle
holding device
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
EP83105918A
Other languages
German (de)
English (en)
Other versions
EP0098991B1 (fr
Inventor
Martin Mayer
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 EP0098991A1 publication Critical patent/EP0098991A1/fr
Application granted granted Critical
Publication of EP0098991B1 publication Critical patent/EP0098991B1/fr
Expired 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
    • 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
    • H01R39/14—Fastenings of commutators or slip-rings to shafts
    • H01R39/16—Fastenings of commutators or slip-rings to shafts by means of moulded or cast material applied during or after assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49011—Commutator or slip ring assembly

Definitions

  • the invention is based on a brush holder device according to the preamble of the main claim.
  • the base plate on which the brush holders are arranged is provided with holding means for fastening the busbar.
  • the base plate and thus the brush holder is, however, attached to a different part of the electrical machine than the field winding, which is connected to the busbar.
  • it is therefore disadvantageous that manufacturing tolerances of the brush holding device or parts carrying the field winding cannot be compensated for.
  • Tensions occur at the connection point between the busbar and the field winding. If the field winding is soldered to the busbar, the solder joint can break. If the field winding is detachably fastened to the busbar, additional means for compensating for the axial and radial deviations of the connection point on the field winding and busbar are required.
  • the brush holder according to the invention with the characterizing features of the main claim has the advantage that the field winding can be attached to the busbar without tension, regardless of the axial and radial deviations from the field winding and the housing accommodating it, as well as the brush holder with the busbar and the device holding bearing cover, which in turn closes the housing of the electrical machine.
  • Another advantage is that the busbar is accommodated on the brush holders in a space-saving manner and is suitable for automatic assembly and is radially and axially resilient to the longitudinal axis of the electrical machine.
  • the measures listed in the subclaims permit advantageous developments of the brush holding device specified in the main claim.
  • the receptacle for the busbar can be formed directly on the brush holder, and the busbar can be held in the receptacle by spring means.
  • FIG. 1 shows a part of the electrical machine with a first embodiment of a brush Holding device, partly in section
  • FIG. 2 shows the brush holding device in section along the line II-II in FIG. 1
  • FIG. 3 shows a section along the line III-III in FIG. 1
  • FIG. 4 shows part of the electrical machine with a second exemplary embodiment of the brush holding device, partly in section
  • FIG. 5 shows a section along the line VV in FIG. 4.
  • the brush holder has a metal bearing plate 1 in which a central bore 2 is formed.
  • a drive shaft 4 which carries a commutator 3, of an electrical machine, for example a starting motor of a starting device for internal combustion engines, projects through the central bore 2.
  • a recess 5 is provided for one brush holder 6 each.
  • each brush holder 6 made of metal with a substantially rectangular cross section have a bent-out tab 7 on one narrow side, which has an end bent approximately parallel to the narrow side.
  • a slot 8 is formed which is open towards the commutator 3 and from which a strand 9 of a brush 10 is led out.
  • the brush 10 is guided over its entire length in the brush holder 6. It rests with one end face on the commutator 3 and on its other end face lies one end each of two brush pressure springs 11, which are also accommodated in the brush holder 6.
  • the other end of the brush pressure springs 11 supports from a bracket 12.
  • the strip-shaped bracket 12 has a U-shaped recess 13 in the middle and bent ends of the U-legs, which form the system for the brush pressure springs 11.
  • the bracket 12 is inserted with the recess 13 inwards into the brush holder 6.
  • Two tabs 14 are formed on the broad sides of the spring-side edge of the brush holder 6, which are bent on the outside of the bracket 12.
  • the bracket 12 is held in the brush holder 6 in the radial direction to the longitudinal axis of the starting device.
  • a slot 15 which is open toward the spring-side end, is provided on both broad sides of the brush holder 6, a slot 15, which is open toward the spring-side end, is provided.
  • a receiving part 16 made of insulating plastic for a busbar 17 is inserted into the slots 15 and the recess 13 of the bracket.
  • the receiving part 16 also has a U-shaped cross section. Two webs 18 are formed on the outside of its legs. The webs 18 run perpendicular to the bottom of the receiving part 16 and lie against the inside of the broad sides of the brush holder 6. The receiving part 16 is narrower than the width of the slots 15, so that it can be moved together with the bracket 12 parallel to the broad sides of the brush holder 6.
  • the brush holders 6 are each received on an insulating part 19 made of plastic.
  • the insulating part 19 has a tab 20 formed on its underside which has an end running approximately parallel to the underside.
  • the brush holder 6 is placed on the insulating part 19 so that the tab 7 of the brush holder 6 engages around the tab 20 of the insulating part 19.
  • the brush holder 6, brush pressure springs 11 and bracket 12 containing brush holder 6 is arranged together with the insulating part 19 on the bearing plate 1.
  • the tabs 7 and 20 protrude through the associated recess 5.
  • the brush pressure springs 11 hold the Brush holder 6 with the insulating part 19 on the bearing plate 1 by pushing the brush holder 6 and insulating part 19 radially away from the commutator 3 so that the tab 20 of the insulating part 19 abuts the outer side of the recess 5 and the end of the tab 20 hook-shaped around the edge the recess 5 engages.
  • the substantially semicircular busbar 17 made of non-insulated conductor material is received in three receiving parts 16, which are used on three brush holders 6.
  • the busbar 17 is in each case a limited amount in the circumferential direction and radially to the longitudinal axis of the starter in the receiving part 16 of the middle brush holder 6 displaceable and pivotable about the receiving part 16 of the middle brush holder 6.
  • the ends of the busbar 17 are guided in the receiving part 16 of the brush holder 6 receiving the opposite plus brushes 10.
  • the associated strands 9 of the plus brushes 10 are fastened to the busbar 17, for example by resistance welding.
  • the strands 9 of the two minus brushes 10 are attached to the bearing plate 1 as a ground connection.
  • the brush holding device designed in this way is automatically preassembled and forms a complete structural unit with all the brushes 10 that are already connected.
  • the structural unit is only to be connected to a current connection 21 of the excitation winding 22 of the starting motor 4.
  • the busbar 17 is provided with a cranked connection area 23 in which a through hole 24 is formed.
  • the power connection 21 extends with its end provided with a threaded hole 25 into the connection area 23 of the Busbar 17, where the power connection 21 of the excitation winding 22 is fastened with a screw 26 to the busbar 17, which is connected to the plus brushes 10.
  • a bearing cap 27 is placed over the assembly, to which the bearing plate 1 of the brush holding device forming the assembly is screwed with screws 28.
  • the bearing cap 27 lies against the end face of the housing 29 of the starter motor with the interposition of a seal and is known per se and not attached in more detail to the housing 29 of the starter motor.
  • the field winding 22 is fastened in the housing 29 and the brush holder on the bearing cap 27.
  • displacements of the power connection 21 of the excitation winding 22 with respect to the connection area 23 of the busbar 17 of the brush holder can occur in the radial, axial and circumferential direction, so that the holes 24 and 25 are not aligned.
  • a nonetheless forced connection would cause stresses at the welding points 9, 17; 9, 1 and shear force on the screw 26 and on the bearing plate 1, 5 and brush holder 6, insulating part 19, 20, which lead to damage to the starting device.
  • the busbar 17 is movably inserted in the receiving parts 16 used on three brush holders 6 in an inventive manner.
  • Equalization in the radial and circumferential direction takes place by moving the busbar 17 in the plane in which it is guided in the receiving parts 16.
  • the receiving parts 16 together with the bracket 12 are moved parallel to the broad sides of the brush holder 6.
  • the brushes pressing springs 11 exerted force acts on the tabs 14 via the brackets 12. This causes friction forces between the brackets 12 and the tabs 14 when the receiving parts 16 are moved with the brackets 12.
  • the frictional forces caused by the brush pressure springs 11 also ensure that the busbar 17 is held firmly in the screwed position, which is particularly necessary in the case of rough operation in motor vehicles.
  • a second embodiment of the brush holder the parts that are the same as those in the first embodiment are given the same reference numerals.
  • Four brush holders 31 are formed from insulating plastic and each provided with a hook 32 which protrudes on a narrow side of the brush holder 31.
  • a recess 33 is formed on the other narrow side and the back of the brush holder 31. It serves as a receptacle for the busbar 17 and is somewhat wider than the busbar 17.
  • a slot 34 which is open toward the commutator 3 is formed on each broad side of the brush holder 31.
  • the strand 9 of a brush 10 guided in the brush holder 31 is led out of each of the slots 34.
  • the brush 10 is pressed against the commutator 3 by a brush pressure spring 35.
  • the spring 35 is supported on the bottom of the brush holder 31. As with the first execution, it also stops play the brush holder 31 in its position on the bearing plate 1.
  • a projection 36 is formed on the outside, which is provided with an insertion bevel 37 and a locking edge 38 and a lateral guide 39.
  • a spring 40 made of round wire is arranged on the broad side of the brush holder 31 facing away from the lead 9.
  • the spring 40 is approximately U-shaped with a shorter leg 41 and a longer leg 42. Both ends of the legs are bent.
  • the shorter leg 41 engages over the busbar 17 placed in the receptacle 33.
  • the longer leg 42 is pushed over the insertion slope 37 of the brush holder 31, 36 and snapped behind the locking edge 38.
  • the leg end 42 is secured behind the guide 39 against lateral slipping off the brush holder 31.
  • a groove 43 can be formed for guiding one of the springs 40.
  • the displacement of the busbar 17 in the circumferential direction is limited.
  • the displacement of the busbar 17 radially to the longitudinal axis of the starting device is ensured by the width of the receptacle 33 of the brush holder 31.
  • the substantial displacement in the axial direction is counter to the force of the spring 40 is made possible by the insertion bevel 37 on the projection 36 of the brush holder 31, on which the longer leg 42 of the spring 40 can be moved and yet the busbar 17 is required for the respective tolerance compensation Location holds.
  • the power connection 21 is in turn screwed to the busbar 17 in its connection area 23 in an assembly-friendly manner.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)
EP83105918A 1982-07-10 1983-06-16 Dispositif de porte-balais pour machines électriques Expired EP0098991B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823225939 DE3225939A1 (de) 1982-07-10 1982-07-10 Buerstenhaltevorrichtung fuer elektrische maschinen
DE3225939 1982-07-10

Publications (2)

Publication Number Publication Date
EP0098991A1 true EP0098991A1 (fr) 1984-01-25
EP0098991B1 EP0098991B1 (fr) 1986-10-01

Family

ID=6168191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105918A Expired EP0098991B1 (fr) 1982-07-10 1983-06-16 Dispositif de porte-balais pour machines électriques

Country Status (4)

Country Link
US (1) US4475053A (fr)
EP (1) EP0098991B1 (fr)
JP (1) JPH0655016B2 (fr)
DE (2) DE3225939A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553813A2 (fr) * 1992-01-31 1993-08-04 Mitsubishi Denki Kabushiki Kaisha Dispositif à balais
WO2010023107A1 (fr) * 2008-08-29 2010-03-04 Robert Bosch Gmbh Machine électrique
CN102025211A (zh) * 2010-12-07 2011-04-20 陕西宝成航空仪表有限责任公司 一种电机电刷架组件及制备新工艺
CN112385097A (zh) * 2018-07-10 2021-02-19 美尔森法国亚眠公司 用于在旋转元件与固定元件之间传递电力的系统

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6188742A (ja) * 1984-10-03 1986-05-07 Nippon Denso Co Ltd 回転電機のブラシ装置
JPH0811031Y2 (ja) * 1986-03-05 1996-03-29 三菱電機株式会社 ブラシ装置
JPH062455Y2 (ja) * 1989-04-25 1994-01-19 株式会社三ツ葉電機製作所 六極四刷子式直流電動機の刷子配置構造
JPH0318658U (fr) * 1989-06-28 1991-02-25
JPH0732569B2 (ja) * 1989-08-31 1995-04-10 株式会社三ツ葉電機製作所 電動モータにおける刷子ホルダの構造および該刷子ホルダ製造用の金型構造
US5266022A (en) * 1989-08-31 1993-11-30 Mitsuba Electric Manufacturing Co., Ltd. Mold structure for manufacturing brush holder as part of an integrated molding process for an electric motor gear frame housing
US5113104A (en) * 1989-10-19 1992-05-12 General Electric Company Structured product dynamoelectric machine
US5237231A (en) * 1989-10-19 1993-08-17 General Electric Company Structured product dynamoelectric machine
JPH03207234A (ja) * 1990-01-08 1991-09-10 Mitsubishi Electric Corp 回転電機のブラシ装置
FR2665986B1 (fr) * 1990-07-30 1994-03-18 Peugeot Automobiles Dispositif porte-balais pour machine electrique a collecteur.
US5047679A (en) * 1990-08-30 1991-09-10 Baader Edward J Casing for a small motor assembly
DE9106978U1 (de) * 1991-06-07 1992-10-01 Robert Bosch Gmbh, 7000 Stuttgart Elektrischer Kleinmotor mit einem eine Öffnung aufweisenden Gehäuse
US5332940A (en) * 1992-01-31 1994-07-26 Mitsubishi Denki Kabushiki Kaisha Brush device
US5252878A (en) * 1992-12-17 1993-10-12 General Motors Corporation Brush holder assembly
US5517755A (en) * 1994-04-08 1996-05-21 Reltec Corporation Method for making a litz wire connection
DE19704472A1 (de) * 1997-02-06 1998-08-13 Bosch Gmbh Robert Elektromotor
US6100617A (en) * 1998-10-01 2000-08-08 Johnson Electric Automotive, Inc. Electrical insulation barrier for an electric motor
MXPA02008074A (es) * 2000-12-21 2003-02-27 Valeo Equip Electr Moteur Maquina electrica con ensamble de portaescobillas y proceso de montaje de una maquina electrica que cuenta con este ensamble.
US7014432B2 (en) * 2002-03-28 2006-03-21 Denso Corporation Fuel pumping unit, with a plurality of commutator brush assemblies with engaging members for restricting brush movement toward the pump motor section
US7705512B2 (en) 2006-10-06 2010-04-27 Remy International, Inc. Dynamoelectric machine conductor
US7696666B2 (en) 2006-10-06 2010-04-13 Remy Technologies, L.L.C. Dynamoelectric machine grommet
US7466056B2 (en) 2006-10-06 2008-12-16 Remi International, Inc Dynamoelectric machine brush holder assembly and method
US20100068976A1 (en) * 2008-09-12 2010-03-18 Boris Zelenko Systems and methods for preparation of conductors for electric motors
JP7211257B2 (ja) * 2019-05-16 2023-01-24 株式会社デンソー 直流モータのブラシホルダアッセンブリ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3794869A (en) * 1972-11-15 1974-02-26 Ford Motor Co Dynamoelectric machine end plate and mounting means
GB1410646A (en) * 1972-10-17 1975-10-22 Shapiro Ab Chernyavsky V P Electric machine rotor current collector devices

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US2753477A (en) * 1953-08-31 1956-07-03 Gen Motors Corp Electrical brush assembly
US3159763A (en) * 1960-03-07 1964-12-01 Gen Motors Corp Brush rigging
DE1613033A1 (de) * 1967-10-05 1970-12-23 Bosch Gmbh Robert Elektrische Maschine,insbesondere Kleinmotor
US3525891A (en) * 1969-02-28 1970-08-25 Singer Co Brush mounting arrangement for dynamoelectric machines
US3654504A (en) * 1971-03-29 1972-04-04 Gen Electric Brush mechanism
US3792298A (en) * 1972-08-24 1974-02-12 Eaton Stamping Co Electric motor brush card
DE2812214A1 (de) * 1978-03-20 1979-09-27 Siemens Ag Buerstenhalteranordnung fuer einen gleichstrom-kleinstmotor
DE2914853A1 (de) * 1979-04-12 1980-10-30 Bosch Gmbh Robert Elektrische kleinmaschine, insbesondere kleinmotor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1410646A (en) * 1972-10-17 1975-10-22 Shapiro Ab Chernyavsky V P Electric machine rotor current collector devices
US3794869A (en) * 1972-11-15 1974-02-26 Ford Motor Co Dynamoelectric machine end plate and mounting means

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0553813A2 (fr) * 1992-01-31 1993-08-04 Mitsubishi Denki Kabushiki Kaisha Dispositif à balais
EP0553813A3 (en) * 1992-01-31 1996-04-24 Mitsubishi Electric Corp A brush device
WO2010023107A1 (fr) * 2008-08-29 2010-03-04 Robert Bosch Gmbh Machine électrique
CN102204035A (zh) * 2008-08-29 2011-09-28 罗伯特·博世有限公司 电机
CN102025211A (zh) * 2010-12-07 2011-04-20 陕西宝成航空仪表有限责任公司 一种电机电刷架组件及制备新工艺
CN102025211B (zh) * 2010-12-07 2013-01-23 陕西宝成航空仪表有限责任公司 一种电机电刷架组件及制备新工艺
CN112385097A (zh) * 2018-07-10 2021-02-19 美尔森法国亚眠公司 用于在旋转元件与固定元件之间传递电力的系统
US11569625B2 (en) 2018-07-10 2023-01-31 Mersen France Amiens Sas System for transferring power between a rotating element and a fixed element
CN112385097B (zh) * 2018-07-10 2024-01-09 美尔森法国亚眠公司 用于在旋转元件与固定元件之间传递电力的系统

Also Published As

Publication number Publication date
JPS59127561A (ja) 1984-07-23
EP0098991B1 (fr) 1986-10-01
DE3225939A1 (de) 1984-01-12
US4475053A (en) 1984-10-02
JPH0655016B2 (ja) 1994-07-20
DE3366574D1 (en) 1986-11-06

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