WO2005124946A1 - Hammerbürste für eine elektrische maschine - Google Patents
Hammerbürste für eine elektrische maschine Download PDFInfo
- Publication number
- WO2005124946A1 WO2005124946A1 PCT/EP2005/052736 EP2005052736W WO2005124946A1 WO 2005124946 A1 WO2005124946 A1 WO 2005124946A1 EP 2005052736 W EP2005052736 W EP 2005052736W WO 2005124946 A1 WO2005124946 A1 WO 2005124946A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brush
- hammer
- arm
- brush holder
- 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.)
- Ceased
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
- H01R39/381—Brush holders characterised by the application of pressure to brush
-
- 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
Definitions
- the invention relates to a hammer brush for an electric machine according to the preamble of claim 1.
- a hammer brush for pivotal mounting on a brush holder of the electric machine usually has two
- Leaf springs comprising a fixing portion for anchoring to the brush holder, an adjoining the attachment portion arm, to which a carbon brush is attached, and an angled at the end of the arm to the attachment portion portion. To ensure the required contact force of the coal to the commutator, a bias of the hammer brushes is required. At the radial
- the preloaded hammer brushes are widened with trained as mating sections, which are supported on the commutator. This results in a high buckling load for the leaf springs of the hammer brushes, especially at the first touch of the joining aid with the commutator. The surface of the commutator can be damaged.
- the hammer brush for an electric machine with the features of claim 1 has the advantage that simplifies the assembly of the hammer brush holder, improves the positioning of the coal to the commutator and the spring force tolerances is narrowed.
- a hammer brush for pivotal mounting on a brush holder of an electric machine is provided with a leaf spring, wherein the leaf spring has a fixing portion for anchoring to the brush holder, an adjoining the attachment portion arm, on the one
- Carbon brush is attached, and comprises an angled at the end of the arm to the fastening portion out resilient portion, wherein the portion is angled to the side facing away from the carbon brush side of the arm.
- the resilient portion is angled at least at an acute angle to the arm. This results in more precisely defined spring forces.
- the arm and the resilient portion are connected to each other via an arc.
- a brush holder with two arranged on the brush holder, projecting from the brush holder hammer brushes, wherein the carbon brushes facing each other and the resilient portions facing away from each other, can be easily assembled.
- the arms when the arms are not mounted, they are arranged substantially parallel to each other.
- the contact force on a commutator during assembly is very low and is applied only towards the end of the assembly process.
- This assembly simplification also affects an electric machine with at least one such hammer brush.
- the brush holder is arranged with the hammer brushes in a recess in front, wherein the hammer brushes abut a commutator arranged in the recess and wherein the recess has two side walls, against which the resilient portions ,
- the assembly can be simplified if on the side walls joining bevels are formed for the resilient portions of the arms.
- FIG. 1 shows an electric motor in longitudinal section
- 2 shows a commutation device of the electric motor according to the section line 11-11 in FIG. 2
- FIG. 3 shows the commutating device from FIG. 2 in the assembly position.
- 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 Wegversteller, windows, wiper drive, blowers, 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 17 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 periphery of two hammer brushes 22 on two radially opposite sides.
- the hammer brushes 22 are arranged on a brush holder 24.
- the commutator 20, the hammer brushes 22 and the brush holder 24 form a commutation device 26.
- the commutator 20 and partially the hammer brushes 22 are arranged in a recess 28, which may be located for example in a transmission housing.
- 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, which is preferably made of plastic, extends substantially parallel to the shaft 16, which is not shown in detail in Figure 2; however, it may also extend perpendicular to the shaft 16.
- the brush holder 24 is arranged in the recess 28 with the hammer brush 22 ahead.
- the hammer brushes 22 abut with carbon brushes 30 on the commutator 20 arranged in the recess.
- the hammer brushes 22 in turn bear against two mutually parallel side walls 32 of the recess 28.
- the side walls 32 each have at their outer edge facing each other serving as a joining aids chamfers 34th
- the hammer brushes 22 for pivotable mounting on the brush holder 24 each include a leaf spring 36.
- Each leaf spring 36 includes a mounting portion 38, is anchored to the brush holder 24.
- the power supply of the hammer brush 22 takes place via the attachment section 38 or additional strands.
- An arm 40 in the form of a leaf spring connects to the attachment section 38.
- On the arm 40 and the carbon brush 30 is attached.
- Preferably via an arc 42 with a 1 to 3 millimeter radius is followed by the arm 40 at the end of an attachment portion 38 and the brush holder 24 toward or in the direction angled resilient portion 44.
- the angled portion 44 is in the unassembled state ( Figure 3) at an acute angle of 5 to 25 ° to the arm 40 angled.
- the resilient portion 44 is angled away from the side facing away from the carbon brush 30 side of the arm 40 out. At the end of the angled portion 44 approximately at the level of the carbon brush 30 is a weggewölbter from the arm 40, preferably arcuate, area 46 is formed. The area 46 essentially corresponds to a semicircle.
- a stiffener 48 is present between the attachment portion 38 and the bow 42.
- the stiffener 48 may be formed as a bead or as the two edge of the rope along the arm 40 may be angled. Also, a plate may be welded, for example.
- the arms 40 are arranged substantially parallel to each other at least in the unassembled state.
- the carbon brushes 30 are facing each other and the resilient portions 44 face away from each other.
- the arms 40 are used to pre-position the carbon brushes 30.
- the angled portions 44 are first compressed by means of the arcuate portions 46 coming into contact with the chamfers 34 and tensioned. This can be done so that the carbon brushes 30 are pressed radially only to the commutator 20 without tangentially along this. As a result, the surface is not scratched. However, it may be permissible for the carbon brushes 30 to drag somewhat along the surface of the commutator 20.
- the arms 40 are pivoted only by the positional offset between the commutator 20 and the brush holder 24, which is why the stiffeners can be provided so well prevent a disturbing tilting of the carbon brushes 30, which can be initiated by the torque due to the spring force
- the hammer brushes 22 can also be arranged in the recess 28 itself.
- the joining bevels 34 are then arranged in the counterpart, for example a plastic carrier or gear cover
Landscapes
- Motor Or Generator Current Collectors (AREA)
- Motor Or Generator Frames (AREA)
- Dc Machiner (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05752513A EP1761977B1 (de) | 2004-06-18 | 2005-06-14 | Hammerbürste für eine elektrische maschine |
| PL05752513T PL1761977T3 (pl) | 2004-06-18 | 2005-06-14 | Szczotka młotkowa dla maszyny elektrycznej |
| DE502005001753T DE502005001753D1 (de) | 2004-06-18 | 2005-06-14 | Hammerbürste für eine elektrische maschine |
| US11/628,245 US20080048518A1 (en) | 2004-06-18 | 2005-06-14 | Hammer Brush for an Electric Machine |
| JP2007515947A JP2008503195A (ja) | 2004-06-18 | 2005-06-14 | 電気機械用のハンマーブラシ |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004029534.4 | 2004-06-18 | ||
| DE102004029534A DE102004029534A1 (de) | 2004-06-18 | 2004-06-18 | Hammerbürste für eine elektrische Maschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005124946A1 true WO2005124946A1 (de) | 2005-12-29 |
Family
ID=34970251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/052736 Ceased WO2005124946A1 (de) | 2004-06-18 | 2005-06-14 | Hammerbürste für eine elektrische maschine |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20080048518A1 (de) |
| EP (1) | EP1761977B1 (de) |
| JP (1) | JP2008503195A (de) |
| CN (1) | CN1969432A (de) |
| AT (1) | ATE376271T1 (de) |
| DE (2) | DE102004029534A1 (de) |
| ES (1) | ES2293586T3 (de) |
| PL (1) | PL1761977T3 (de) |
| WO (1) | WO2005124946A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009059827A1 (de) * | 2007-11-08 | 2009-05-14 | Robert Bosch Gmbh | Antriebseinheit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE496914C (de) * | 1927-05-20 | 1930-04-29 | Siemens Schuckertwerke Akt Ges | Kohlebuerstenhalter fuer elektrische Maschinen mit spiralfoermiger, an ihrem einen Ende an der Buerste anliegender, mit ihrem anderen Ende an dem Buerstenhalter eingespannter Druckfeder |
| FR2265204A1 (en) * | 1974-03-21 | 1975-10-17 | Bosch Siemens Hausgeraete | Electric household appliance motor - has carbon brushes keying into holes in spring support arms whose ends form solder tags |
| JPS6173547A (ja) * | 1984-09-17 | 1986-04-15 | Matsushita Electric Ind Co Ltd | 小型整流子モ−タのブラシ保持装置 |
| WO2002050963A1 (de) * | 2000-12-19 | 2002-06-27 | K-Tec Gmbh | Halterung für eine kohlebürste |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2262409A (en) * | 1939-11-29 | 1941-11-11 | Westinghouse Electric & Mfg Co | Synchro-tie unit |
| US4238703A (en) * | 1978-07-14 | 1980-12-09 | Aupac Kabushiki Kaisha | Brush device for a miniature electric motor |
| DE10148705A1 (de) * | 2001-10-02 | 2003-04-10 | Valeo Auto Electric Gmbh | Bürstenhaltesystem und Antriebseinrichtung |
-
2004
- 2004-06-18 DE DE102004029534A patent/DE102004029534A1/de not_active Withdrawn
-
2005
- 2005-06-14 WO PCT/EP2005/052736 patent/WO2005124946A1/de not_active Ceased
- 2005-06-14 AT AT05752513T patent/ATE376271T1/de not_active IP Right Cessation
- 2005-06-14 CN CNA2005800197790A patent/CN1969432A/zh active Pending
- 2005-06-14 US US11/628,245 patent/US20080048518A1/en not_active Abandoned
- 2005-06-14 EP EP05752513A patent/EP1761977B1/de not_active Expired - Lifetime
- 2005-06-14 ES ES05752513T patent/ES2293586T3/es not_active Expired - Lifetime
- 2005-06-14 DE DE502005001753T patent/DE502005001753D1/de not_active Expired - Lifetime
- 2005-06-14 PL PL05752513T patent/PL1761977T3/pl unknown
- 2005-06-14 JP JP2007515947A patent/JP2008503195A/ja not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE496914C (de) * | 1927-05-20 | 1930-04-29 | Siemens Schuckertwerke Akt Ges | Kohlebuerstenhalter fuer elektrische Maschinen mit spiralfoermiger, an ihrem einen Ende an der Buerste anliegender, mit ihrem anderen Ende an dem Buerstenhalter eingespannter Druckfeder |
| FR2265204A1 (en) * | 1974-03-21 | 1975-10-17 | Bosch Siemens Hausgeraete | Electric household appliance motor - has carbon brushes keying into holes in spring support arms whose ends form solder tags |
| JPS6173547A (ja) * | 1984-09-17 | 1986-04-15 | Matsushita Electric Ind Co Ltd | 小型整流子モ−タのブラシ保持装置 |
| WO2002050963A1 (de) * | 2000-12-19 | 2002-06-27 | K-Tec Gmbh | Halterung für eine kohlebürste |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 010, no. 244 (E - 430) 22 August 1986 (1986-08-22) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009059827A1 (de) * | 2007-11-08 | 2009-05-14 | Robert Bosch Gmbh | Antriebseinheit |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080048518A1 (en) | 2008-02-28 |
| ES2293586T3 (es) | 2008-03-16 |
| DE102004029534A1 (de) | 2006-01-05 |
| CN1969432A (zh) | 2007-05-23 |
| PL1761977T3 (pl) | 2008-03-31 |
| EP1761977B1 (de) | 2007-10-17 |
| JP2008503195A (ja) | 2008-01-31 |
| ATE376271T1 (de) | 2007-11-15 |
| DE502005001753D1 (de) | 2007-11-29 |
| EP1761977A1 (de) | 2007-03-14 |
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