EP1747606A1 - Kohlebürste für eine elektrische maschine - Google Patents
Kohlebürste für eine elektrische maschineInfo
- Publication number
- EP1747606A1 EP1747606A1 EP05729618A EP05729618A EP1747606A1 EP 1747606 A1 EP1747606 A1 EP 1747606A1 EP 05729618 A EP05729618 A EP 05729618A EP 05729618 A EP05729618 A EP 05729618A EP 1747606 A1 EP1747606 A1 EP 1747606A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carbon
- brush
- brush holder
- carbon brush
- carbon brushes
- 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
Links
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
- H01R39/39—Brush holders wherein the brush is fixedly mounted in the holder
-
- 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
- H01R39/381—Brush holders characterised by the application of pressure to brush
Definitions
- the invention relates to a carbon brush for an electric machine according to the preamble of claim 1.
- a carbon brush is pivotally mounted on a
- Brush holder of the electrical machine stored.
- the carbon brush is mounted in a plastic part, which in turn is pivotally mounted on the brush holder.
- the position of the contact area of the carbon brush to the commutator can change greatly due to the temperature coefficient of the plastic.
- parts made of metal, weight and costs increase.
- pivotable carbon brushes are hammer brushes, wherein the carbon brush is attached to a leaf spring.
- the power is supplied via a wire or directly via the leaf spring, which is welded to the carbon brush. Manufacturing tolerances can cause a height offset between the carbon brush and the ideal contact height at the commutator. Noise development can not be excluded.
- the carbon brush for an electrical machine with the features of claim 1 has the advantage that the position of the carbon brush to the commutator does not change very strong even with strong temperature fluctuations. Furthermore, the carbon brush can be well positioned in a brush holder, which ensures an accurate assignment to the commutator.
- a carbon brush for an electric machine for pivotable mounting on a brush holder of the electric machine is provided, wherein on the coal itself a Lageräbêt is formed for pivotal mounting of the coal.
- a simple implementation of the carbon brush is given if adjoins the bearing portion of the carbon brush, a pivot arm, of which a support portion for support protrudes transversely on a commutator of a commutator motor or a slip ring of a generator.
- the carbon brush can be attached to a brush holder which extends parallel to the shaft of an electrical machine.
- bearing portion Simple embodiments of the bearing portion are possible if it is designed as a cylindrical portion for receiving in a bearing shell or if it has a bore for receiving a bearing pin.
- an electrical pigtail is attached to the pivot arm or the support section, as this favorable electrical connections are possible.
- the spring is attached to the pivot arm and passes over an arcuate portion in a spring arm, which extends substantially along the pivot arm in the direction of the bearing portion.
- Brush holder with bearings for the pivotal mounting of carbon brushes and with such carbon brushes on which even bearing sections are formed, which are accommodated in the camps, are inexpensive.
- the brush holder has bearing shells or pins on which the carbon brushes are mounted, which allows a cost-effective manner of storage.
- FIG. 1 shows an electric motor in longitudinal section
- FIG. 2 shows a first commutation device of the electric motor
- FIG. 3 shows a second commutation device and FIG. 4 shows a third commutation device.
- an electric motor 10 which may also be a generator, simplified in a longitudinal section shown.
- the electric motor 10 can be used in a motor vehicle, for example in a window regulator, wiper drive, blower, etc.
- the electric motor 10 comprises a housing 12 and an armature 14 arranged therein.
- the armature 14 has a shaft 16 and an armature package 1 7 with an armature winding, not shown.
- the armature winding is connected via wires 18 to a commutator 20.
- the commutator 20 is acted on the circumference of two carbon brushes 22 on two radially opposite sides.
- the carbon brushes 22 are arranged on a brush holder 24.
- the commutator 20, the carbon brushes 22 and the brush holder 24 form a commutation device 26.
- the commutation device 26 is shown in a side view from the left in relation to the longitudinal section of FIG.
- the brush holder 24 has two bearings in the form of pins 28, which extend parallel to the commutator axis, for the pivotable mounting of the carbon brushes 22.
- the distance of the pins 28 from each other is preferably at least as large as the diameter of the commutator 20.
- the distance of the pins 28 to the commutator axis is at least 1.5 times the commutator radius.
- each have a pivot arm 32 connects.
- the length of the pivot arm 32 preferably corresponds approximately to the radius of the commutator 20.
- the length of the pivot arm 32 is dimensioned so that support portions 34 for resting on the commutator 20 of the two carbon brushes 22 are diametrically opposed to the commutator 20.
- the respective contact region 34 projects transversely or diagonally from the pivot arm 32 and has a shorter length than the pivot arm 32.
- the cross-sectional area of the carbon brush 22 is rectangular, preferably square.
- spring arms 38 are arranged.
- the spring arms 38 act on the carbon brushes 22 so that they are pressed against the commutator 20.
- the carbon brushes 22 are shown in a position they occupy when the commutator 20 is absent.
- the spring arms 38 are preferably integrally formed on the brush holder 24, made of plastic and cher in a plane. It is advantageous if they are directed towards each other. As a result, a space-saving arrangement is given as if they are directed away from each other.
- a stranded wire 40 is still attached to the carbon brushes 22 for electrical contacting.
- the strand 40 is preferably welded to the pivot arm 32, in particular electrically welded.
- the carbon brushes 22 are placed on the pins 28. At the same time, the spring arms 38 are inserted into the slots 36. As a result, then the angular position of the carbon brushes 22 is secured and optionally an intermediate storage possible.
- the commutation device 26 is pressed with the carbon brushes 22 ahead against the commutator 20. As a result, the carbon brushes 22 are pressed apart until the Kommut réellesvorachtung 26 reaches its final position.
- two slightly modified carbon brushes 22.1 and 22.2 are shown. Both carbon brushes 22.1, 22.2 have a kind of storage in common, which differs from the previously described.
- the carbon brushes 22.1 and 22.2 instead of a bore 30, the carbon brushes 22.1 and 22.2 as a bearing section on a cylindrical portion 42 for receiving in a bearing shell 44, wherein the bearing portions integral with the carbon brushes 22.1, 22.2 or integrally formed therewith.
- the longitudinal axis of the cylindrical portion 42 is parallel to the commutator axis.
- the bearing shell 44 is designed so that on the one hand the carbon brushes 22.1 and 22.2 can be mounted via a snap or clip connection. On the other hand, the carbon brushes 22.1 and 22.2 can be pivoted sufficiently.
- the carbon brushes 22.1 and 22 also have a pivoting arm 32 and a support region 34, the dimensions of which correspond to those of the carbon brush 22 of FIG. Of course, a storage according to Figure 2 is also possible here.
- a spring 46.1 or 46.2 for applying a compressive force to the pivot arm 32 or the support portion 34 is attached.
- Both springs 46.1 are preferably made of resilient flat steel. Both springs 46.1 and 46.2 are fixed to the pivot arm 32 and go over an arcuate portion 48.1 and 48.2 in a spring arm 50.1 and 50.2, which extends substantially along the pivot arm 32 in the direction of the bearing shells 44.
- the spring 46.1 is connected via a pin 52 with the carbon brush 22.
- the spring 46.2 is on
- Swivel arm 32 of the carbon brush 22 welded. This makes this part easy to prefabricate and handle.
- the spring arms 50.1 and 50.2 of the springs 46.1 and 46.2 are inserted into receiving bores 54 of the brush holder 56, in which they are supported on the brush holder 56. This training allows that at the same time the suspension and the power supply is ensured.
- FIG. 4 shows another commenting device with an annular brush holder 58.
- the brush holder 58 can be mounted axially on a shaft 16 with the commutator 20.
- two further carbon brushes 22.3 are pivotally mounted.
- the carbon brushes 22.3 essentially have a shape corresponding to the carbon brushes 22.1, 22.2. That is, they also have a cylindrical portion 42, a pivot arm 32 and a support portion 34.
- a leg spring or torsion spring 60 is disposed on the bearing shell 44 in addition to the cylindrical portion 42.
- the central portion 62 of the torsion spring 60 which is preferably helically wound, is in this case the bearing shell 44 is arranged.
- the length of the bearing shell 44 is dimensioned so that they can accommodate the cylindrical portion 42 and the central portion 62, if they are arranged one behind the other.
- a pin about which the central portion 62 of the torsion spring 60 is arranged may be provided on the cylindrical portion 42, a pin about which the central portion 62 of the torsion spring 60 is arranged.
- the illustration in Figure 4 is the same in the case. This also applies to a storage with pins 28 of Figure 2.
- a first leg 64 of the torsion spring 60 is supported on the bearing shell 44 or another component.
- a second leg 66 so hangs on the pivot arm 32, that the torsion spring 60 when mounted brush holder 58, the support area 34 against the
- Commutator 20 presses.
- the torsion spring 60 which may be mounted on bearings in the form of the pins 28, the bearing shells 44 or even the Kohlbebürsten 22.3 itself, allows a comparatively simple structure.
- the power supply is possible via strands 40, as shown in Figure 2, or can also be via Drebfedern 60 when they are welded, for example, to the carbon brushes 22.3.
- the leg 64 can then be used for example as a connector.
- the bearing sections which are formed on the carbon brushes 22, 22.1, 22.2, 22.3 itself or integrally or integrally with these, allow the elimination of additional components for the pivotal mounting of the carbon brushes 22, 22.1, 22.2, 22.3, such as leaf springs in hammer brushes or plastic holder ,
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Carbon And Carbon Compounds (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05729618T PL1747606T3 (pl) | 2004-05-12 | 2005-03-04 | Szczotka węglowa do maszyny elektrycznej |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004023398A DE102004023398A1 (de) | 2004-05-12 | 2004-05-12 | Kohlebürste für eine elektrische Maschine |
PCT/EP2005/050984 WO2005112205A1 (de) | 2004-05-12 | 2005-03-04 | Kohlebürste für eine elektrische maschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1747606A1 true EP1747606A1 (de) | 2007-01-31 |
EP1747606B1 EP1747606B1 (de) | 2008-01-23 |
Family
ID=34963037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05729618A Not-in-force EP1747606B1 (de) | 2004-05-12 | 2005-03-04 | Kohlebürste für eine elektrische maschine |
Country Status (8)
Country | Link |
---|---|
US (1) | US20080030099A1 (de) |
EP (1) | EP1747606B1 (de) |
CN (1) | CN100511877C (de) |
AT (1) | ATE385058T1 (de) |
DE (2) | DE102004023398A1 (de) |
ES (1) | ES2301002T3 (de) |
PL (1) | PL1747606T3 (de) |
WO (1) | WO2005112205A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2600503B1 (de) * | 2011-12-02 | 2019-02-13 | Lakeview Innovation Ltd. | Bürstendeckel für einen bürstenkommutierten Elektromotor und Elektromotor |
WO2016095959A1 (en) * | 2014-12-16 | 2016-06-23 | Aktiebolaget Skf | Bearing arrangement |
DE102016225984A1 (de) * | 2016-12-22 | 2018-06-28 | Robert Bosch Gmbh | Bürstenhalter für eine elektrische Maschine |
CN110752494B (zh) * | 2019-10-30 | 2020-12-29 | 哈尔滨电机厂有限责任公司 | 一种均压式恒压碳刷支撑装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3229135A (en) * | 1963-05-31 | 1966-01-11 | Cav Ltd | Brush assemblies for dynamoelectric machines |
DE1916392U (de) * | 1963-06-25 | 1965-05-26 | Ringsdorff Werke Gmbh | Buerstenhalter-kombination. |
DE1226702B (de) * | 1964-12-24 | 1966-10-13 | Ernst Weiss Dipl Kfm | Haltevorrichtung fuer Kollektorbuersten von Klein- bzw. Kleinstmotoren |
FR2022966A1 (de) * | 1968-11-09 | 1970-08-07 | Nippon Denso Co | |
DE2812214A1 (de) * | 1978-03-20 | 1979-09-27 | Siemens Ag | Buerstenhalteranordnung fuer einen gleichstrom-kleinstmotor |
DE3023803A1 (de) * | 1980-06-25 | 1982-01-21 | Siemens AG, 1000 Berlin und 8000 München | Kollektormotor |
CH673356A5 (de) * | 1986-04-14 | 1990-02-28 | Portescap | |
DE9207590U1 (de) * | 1992-06-04 | 1992-08-20 | Interelectric Ag, Sachseln, Ch | |
DE29605114U1 (de) * | 1996-03-19 | 1996-07-11 | Interelectric Ag | Bürstendeckel für Gleichstrommaschinen |
DE19904728A1 (de) * | 1999-02-05 | 2000-08-10 | Interelectric Ag Sachseln | Elektromotor mit einem Kommutator |
JP3898942B2 (ja) * | 2001-11-30 | 2007-03-28 | 並木精密宝石株式会社 | ブラシ装置及びブラシ付きモータ |
US6707220B1 (en) * | 2003-02-12 | 2004-03-16 | Siemens Vdo Automotive, Inc. | Electric motor brush holder for suppressing audible and electromagnetic noise |
-
2004
- 2004-05-12 DE DE102004023398A patent/DE102004023398A1/de not_active Withdrawn
-
2005
- 2005-03-04 WO PCT/EP2005/050984 patent/WO2005112205A1/de active IP Right Grant
- 2005-03-04 CN CNB2005800151369A patent/CN100511877C/zh not_active Expired - Fee Related
- 2005-03-04 EP EP05729618A patent/EP1747606B1/de not_active Not-in-force
- 2005-03-04 PL PL05729618T patent/PL1747606T3/pl unknown
- 2005-03-04 AT AT05729618T patent/ATE385058T1/de not_active IP Right Cessation
- 2005-03-04 ES ES05729618T patent/ES2301002T3/es active Active
- 2005-03-04 DE DE502005002672T patent/DE502005002672D1/de active Active
- 2005-03-04 US US11/587,437 patent/US20080030099A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2005112205A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20080030099A1 (en) | 2008-02-07 |
WO2005112205A1 (de) | 2005-11-24 |
PL1747606T3 (pl) | 2008-07-31 |
CN100511877C (zh) | 2009-07-08 |
CN1954467A (zh) | 2007-04-25 |
DE502005002672D1 (de) | 2008-03-13 |
DE102004023398A1 (de) | 2005-12-08 |
ATE385058T1 (de) | 2008-02-15 |
EP1747606B1 (de) | 2008-01-23 |
ES2301002T3 (es) | 2008-06-16 |
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