WO2003010873A2 - Improved brush holder for d.c. commutator motor with permanaent magnets - Google Patents

Improved brush holder for d.c. commutator motor with permanaent magnets Download PDF

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Publication number
WO2003010873A2
WO2003010873A2 PCT/SI2002/000020 SI0200020W WO03010873A2 WO 2003010873 A2 WO2003010873 A2 WO 2003010873A2 SI 0200020 W SI0200020 W SI 0200020W WO 03010873 A2 WO03010873 A2 WO 03010873A2
Authority
WO
WIPO (PCT)
Prior art keywords
commutator
bearing guard
spring
brush
motor
Prior art date
Application number
PCT/SI2002/000020
Other languages
French (fr)
Other versions
WO2003010873A3 (en
Inventor
Bojan Bertoncelj
Original Assignee
Domel Elektromotorji In Gospodinjski Aparati, D.D.
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 Domel Elektromotorji In Gospodinjski Aparati, D.D. filed Critical Domel Elektromotorji In Gospodinjski Aparati, D.D.
Priority to AU2002321978A priority Critical patent/AU2002321978A1/en
Publication of WO2003010873A2 publication Critical patent/WO2003010873A2/en
Publication of WO2003010873A3 publication Critical patent/WO2003010873A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
    • H02K11/026—Suppressors associated with brushes, brush holders or their supports
    • 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

Definitions

  • the invention involves the improved bearing guard on the commutator side with the D.C. commutator motor with permanent magnets that in addition to simple connection of the electric voltage to the motor enables reliable brush control and simple mounting of other necessary elements (capacitor, rectifier circuit) without any special additional work operations.
  • the invention has been classified into class H 02K 5/26 of the International Patent Classification.
  • the technical problem successfully solved by the invention in question involves the design and the construction of such bearing guard on the side of the brushes of the D.C. commutator motor with permanent magnets that will enable a reduction in the number of component parts along with reduction and simplification of technological operations concerning the connection of the supply voltage to the motor and the subsequent electric coupling to the spring and to the capacitor for elimination of radiofrequency disturbances;
  • the version is supposed to enable connection of the supply voltage through standard coupling elements and shall allow for the maximum possible space utilization and robust version of the motor whereby, for quality reason, the brushes should be guided in the way to provide for a more stable contact with the motor commutator.
  • the version referred to in this invention and its space utilization should enable the mounting of the rectifier electronic circuit with attenuation elements directly to the basic motor version, whereby the basic length of the motor shall not be extended.
  • bearing guards in particular those on the side of the brushes with D.C. commutator motors, are constructed in the way to enable guidance of a pair of brushes and the corresponding mounting of springs that press the brushes against the commutator, at the same time solving the problem of connection of the electric voltage to the motor.
  • the bearing guard on the brush side is provided with adequate guides that enable guidance of brushes, and the corresponding attachments for mounting of the spring. All electric connections, including the brushes electric connections are such as to require soldering, which again requires additional work operations.
  • the invention involves an improved bearing guard on the commutator side with the D.C. commutator motor with permanent magnets, provided with a built-in standard coupling element whereof the mounting enables, in addition to its voltage connection function, the function of appropriate electric coupling with the spring of the brush and with the capacitor, whereby the spring that presses the brush against the commutator is shaped in the way that it also creates the component of the force that presses the brush against the walls of the guide and thereby reduces the unwanted noise, improves the commutation with the commutator, whereby the structure of the improved bearing guard also enables simple superstructure of the D.C. commutator motor with a rectifier circuit that may be directly fixed to the above bearing guard and due to the good utilization of space does not prolong the basic length of the motor.
  • Figure 1 shows the D.C. commutator motor with permanent magnets, provided with the mounted improved bearing guard on the commutator side, such as referred to in this invention, as a side view of partial longitudinal cross-section and as a side-view of the bearing guard on the commutator side;
  • Figure 2 shows the axionometric view of a part of the commutator motor with improved bearing guard on the commutator side, such as referred to in the invention
  • Figure 3 shows a detail of the fixing of the coupling element 15 to the bearing guard referred to in this invention
  • Figure 4 shows a detail of the guide 11 with the inserted brush 12 and the action of the forces on the inserted brush 12 due to the operation of the operating end 24 of the spring 13;
  • Figure 5 shows the spring 13 as a side view from the front, from the back and in the sense of the main axle;
  • Figure 6 shows the D.C. commutator motor with permanent magnets, wits an improved bearing guard on the commutator side, such as referred to in this invention, including a mounted rectifier circuit.
  • the invention in question involves the D.C. commutator motor with permanent magnets.
  • the commutator motor is shown in Figure 1 and actually consists of the housing 1 containing fixed permanent magnets 2 and the rotor 3.
  • the rotor consists of the shaft 4, rotor blades 5 with copper winding 6 and of the commutator 7. Adequate position of the rotor is secured by two rotors 8 that are built into the bearing guard 9 and bearing guard 10.
  • the bearing guard 9 lies on the driving side of the motor, while the bearing guard 10 lies on the commutator 7 side.
  • On the commutator 7 side the bearing guard is made of thermoplastic material, including also the guides 11 of the brushes 12.
  • the brushes 12 provide for transmission of the D.C. voltage to the commutator 7 and therethrough to the rotor copper winding 6.
  • the electricity supply to the brushes 12 is possible via the spring 13. Due to the legal regulations on electromagnetic compatibility there shall be the corresponding capacitor 14 connected between the supply voltage and the housing 1 of the motor.
  • the bearing guard 10 On the commutator 7 side, the bearing guard 10 contains a mechanically fixed coupling element 15, such as shown in detail in Figure 3. In addition to its basic supply voltage connection function, it also provides for appropriate electric coupling with the spring (13) of the brush (12) and with the capacitor (14).
  • the triple function of the standard coupling element 15 is very favourable from both technical and economic point of view because it does not require any additional coupling elements and the corresponding mounting procedures; at the same time it is suitable for mounting the standard attachments for supply voltage connection.
  • the bearing guard 10 such as referred to in this invention, is shaped in the way as to allow for adequate mounting of the standard coupling element 15 in the manner to enable all three listed functions.
  • the bearing guard 10 is provided with two boreholes, while the coupling element is provided with two pins 17.
  • the coupling element 15 is fixed into the bearing guard 10 with the pins of the coupling element 17 that are pushed into the boreholes 18 in the bearing guard 10 and are further mechanically curved at the bottom in order to provide for sufficient mechanical strength of the coupling.
  • the pin 16 of the capacitor 14 too, is inserted into the borehole 18 where an adequate electric coupling between the coupling element 15 and the capacitor 14 is secured through the correctly selected size of the borehole 18.
  • the support 19 of the bearing guard 10 is provided with a groove 20 into which there comes stuck the flat end 21 of the spring 13 that is flexibly attached to the protuberance 23.
  • the groove protects the spring 13 from falling out when worn and torn; in combination with the position of the protuberance 23 it also provided for appropriate position of the flat end 21 of the spring 13, leading to adequate electric contact between the coupling element 15 and the brush 12 through the spring 13.
  • the bearing guard 10 contains the seat 22 that enables and provides to the capacitor 14 correct mounting and accordingly prevents from incorrect mounting or subsequent moving of the capacitor 14, in turn eliminating the possibility of insufficient electric distances between the connection voltage and the motor housing 1.
  • the spring 13 mounted on the protuberance 23 and pressing against the brush 12 is constructed in the way that the brush 12 with its shape, in addition to the basic component of the force in the direction of the arrow F1 that presses with the brush 12 on the commutator 7 also creates the transversal Information lateral component of the force in the direction of the arrow F2, such as shown in Figure 4.
  • the lateral component of the force in the direction of the arrow F2 covers at least 10% and is in the concrete case achieved through the decline of the operating end 24 of the spring 13 from the normal position for angle A that is at least 5°.
  • the shape of the spring 13 and the angle A are evident from Figure 5.
  • the brush 12 Due to the transversal and/or lateral component of the force in the direction of the arrow F2 the brush 12 also presses against the wall of the guide 25 of the brush 12. Such pressure reduces the vibrations of the brush 12 in the guide 11 and as a consequence reduces the unwanted noise level and improves the commutation of the brush 12 with the commutator 7.
  • the coupling element 15, the capacitor 14 and the spring 13 are located on the outer side of the motor, which allows for easier mounting of the brushes 12, because the spring 13 may only be mounted on the protuberance 23 in the final phase of the assemblage.
  • the version allows for mounting the coupling elements of the following widths: 2.8, 4.8 or 6.3 mm at such spots that they do not extend the total length of the motor.
  • the superstructure of the basic motor version may also include the rectifier circuit 26, mounted at the front of the motor housing 1 on the commutator side and centered on the bearing guard 10 as shown in Figure 6.
  • the rectifier circuit 26 is through its electric connections 27 directly coupled with the coupling elements of the motor 15, thereby securing the mechanical and the electric coupling between the rectifier circuit 26 and the motor.
  • Such coupling mode allows for simple and economical motor superstructure whereby, due to the good utilization of space, the elements of the circuit 28 may be turned inwards towards the motor and, accordingly, do not prolong the basic length of the motor. In case that bigger elements are also required on the rectifier circuit, they must be turned outwards, which prolongs the motor for at maximum 20 mm.

Landscapes

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

Abstract

The invention involves the improved bearing guard on the commutator side with the D.C. commutator motor with permanent magnets that in addition to simple connection of the electric voltage to the motor enables reliable brush control and simple mounting of other necessary elements (capacitor, rectifier circuit) without any special additional work operations. The improved bearing guard (10) on the commutator side with the D.C. commutator motor including permanent magnets is provided with a built-in standard coupling element (15) whereof the mounting enables, in addition to its voltage connection function, the function of appropriate electric coupling with the spring (13) of the brush (12), such as attached to the protuberance (23), and with the capacitor (14) pin (16), requiring no additional work operations, whereby the spring (13) that presses the brush (12) against the commutator is shaped in the way that it also creates the component of the force in the direction of the arrow (F2) that presses the brush (12) against the walls of the guide (25) and thereby reduces the unwanted noise, improves the commutation with the commutator, whereby the structure of the improved bearing guard also enables simple superstructure of the D.C. commutator motor with a rectifier circuit that may be directly fixed to the above bearing guard and due to the good utilization of space does not prolong the basic length of the motor.

Description

IMPROVED BEARING GUARD ON THE COMMUTATOR SIDE WITH THE D.C. COMMUTATOR MOTOR WITH PERMANENT MAGNETS
The invention involves the improved bearing guard on the commutator side with the D.C. commutator motor with permanent magnets that in addition to simple connection of the electric voltage to the motor enables reliable brush control and simple mounting of other necessary elements (capacitor, rectifier circuit) without any special additional work operations. The invention has been classified into class H 02K 5/26 of the International Patent Classification.
The technical problem successfully solved by the invention in question involves the design and the construction of such bearing guard on the side of the brushes of the D.C. commutator motor with permanent magnets that will enable a reduction in the number of component parts along with reduction and simplification of technological operations concerning the connection of the supply voltage to the motor and the subsequent electric coupling to the spring and to the capacitor for elimination of radiofrequency disturbances; the version is supposed to enable connection of the supply voltage through standard coupling elements and shall allow for the maximum possible space utilization and robust version of the motor whereby, for quality reason, the brushes should be guided in the way to provide for a more stable contact with the motor commutator. The version referred to in this invention and its space utilization should enable the mounting of the rectifier electronic circuit with attenuation elements directly to the basic motor version, whereby the basic length of the motor shall not be extended.
The known versions of bearing guards, in particular those on the side of the brushes with D.C. commutator motors, are constructed in the way to enable guidance of a pair of brushes and the corresponding mounting of springs that press the brushes against the commutator, at the same time solving the problem of connection of the electric voltage to the motor.
With more simple versions the brushes are mounted without special guides and their required position is secured only by the position and by the force of the pressure springs. Such solution does not enable any reliable guidance of brushes or simple connection of the electric voltage to the motor. Mounting and connection of other required elements is not possible in a simple manner, accordingly such version is suitable only with electric motor versions from lower price range.
With better solutions, the bearing guard on the brush side is provided with adequate guides that enable guidance of brushes, and the corresponding attachments for mounting of the spring. All electric connections, including the brushes electric connections are such as to require soldering, which again requires additional work operations.
The invention, however, involves an improved bearing guard on the commutator side with the D.C. commutator motor with permanent magnets, provided with a built-in standard coupling element whereof the mounting enables, in addition to its voltage connection function, the function of appropriate electric coupling with the spring of the brush and with the capacitor, whereby the spring that presses the brush against the commutator is shaped in the way that it also creates the component of the force that presses the brush against the walls of the guide and thereby reduces the unwanted noise, improves the commutation with the commutator, whereby the structure of the improved bearing guard also enables simple superstructure of the D.C. commutator motor with a rectifier circuit that may be directly fixed to the above bearing guard and due to the good utilization of space does not prolong the basic length of the motor.
The invention will be explained in detail on the basis of the concrete example and with reference to the pictures whereof:
Figure 1 shows the D.C. commutator motor with permanent magnets, provided with the mounted improved bearing guard on the commutator side, such as referred to in this invention, as a side view of partial longitudinal cross-section and as a side-view of the bearing guard on the commutator side;
Figure 2 shows the axionometric view of a part of the commutator motor with improved bearing guard on the commutator side, such as referred to in the invention;
Figure 3 shows a detail of the fixing of the coupling element 15 to the bearing guard referred to in this invention;
Figure 4 shows a detail of the guide 11 with the inserted brush 12 and the action of the forces on the inserted brush 12 due to the operation of the operating end 24 of the spring 13;
Figure 5 shows the spring 13 as a side view from the front, from the back and in the sense of the main axle;
Figure 6 shows the D.C. commutator motor with permanent magnets, wits an improved bearing guard on the commutator side, such as referred to in this invention, including a mounted rectifier circuit.
The invention in question involves the D.C. commutator motor with permanent magnets. The commutator motor is shown in Figure 1 and actually consists of the housing 1 containing fixed permanent magnets 2 and the rotor 3. The rotor consists of the shaft 4, rotor blades 5 with copper winding 6 and of the commutator 7. Adequate position of the rotor is secured by two rotors 8 that are built into the bearing guard 9 and bearing guard 10. The bearing guard 9 lies on the driving side of the motor, while the bearing guard 10 lies on the commutator 7 side. On the commutator 7 side the bearing guard is made of thermoplastic material, including also the guides 11 of the brushes 12. The brushes 12 provide for transmission of the D.C. voltage to the commutator 7 and therethrough to the rotor copper winding 6. The electricity supply to the brushes 12 is possible via the spring 13. Due to the legal regulations on electromagnetic compatibility there shall be the corresponding capacitor 14 connected between the supply voltage and the housing 1 of the motor.
On the commutator 7 side, the bearing guard 10 contains a mechanically fixed coupling element 15, such as shown in detail in Figure 3. In addition to its basic supply voltage connection function, it also provides for appropriate electric coupling with the spring (13) of the brush (12) and with the capacitor (14). The triple function of the standard coupling element 15 is very favourable from both technical and economic point of view because it does not require any additional coupling elements and the corresponding mounting procedures; at the same time it is suitable for mounting the standard attachments for supply voltage connection.
The bearing guard 10, such as referred to in this invention, is shaped in the way as to allow for adequate mounting of the standard coupling element 15 in the manner to enable all three listed functions. For the purpose of fixing the coupling element 15 the bearing guard 10 is provided with two boreholes, while the coupling element is provided with two pins 17. The coupling element 15 is fixed into the bearing guard 10 with the pins of the coupling element 17 that are pushed into the boreholes 18 in the bearing guard 10 and are further mechanically curved at the bottom in order to provide for sufficient mechanical strength of the coupling. In addition to the coupling element 15, the pin 16 of the capacitor 14, too, is inserted into the borehole 18 where an adequate electric coupling between the coupling element 15 and the capacitor 14 is secured through the correctly selected size of the borehole 18.
The support 19 of the bearing guard 10 is provided with a groove 20 into which there comes stuck the flat end 21 of the spring 13 that is flexibly attached to the protuberance 23. The groove protects the spring 13 from falling out when worn and torn; in combination with the position of the protuberance 23 it also provided for appropriate position of the flat end 21 of the spring 13, leading to adequate electric contact between the coupling element 15 and the brush 12 through the spring 13.
Furthermore, the bearing guard 10 contains the seat 22 that enables and provides to the capacitor 14 correct mounting and accordingly prevents from incorrect mounting or subsequent moving of the capacitor 14, in turn eliminating the possibility of insufficient electric distances between the connection voltage and the motor housing 1.
The spring 13 mounted on the protuberance 23 and pressing against the brush 12 is constructed in the way that the brush 12 with its shape, in addition to the basic component of the force in the direction of the arrow F1 that presses with the brush 12 on the commutator 7 also creates the transversal Information lateral component of the force in the direction of the arrow F2, such as shown in Figure 4. The lateral component of the force in the direction of the arrow F2 covers at least 10% and is in the concrete case achieved through the decline of the operating end 24 of the spring 13 from the normal position for angle A that is at least 5°. The shape of the spring 13 and the angle A are evident from Figure 5. Due to the transversal and/or lateral component of the force in the direction of the arrow F2 the brush 12 also presses against the wall of the guide 25 of the brush 12. Such pressure reduces the vibrations of the brush 12 in the guide 11 and as a consequence reduces the unwanted noise level and improves the commutation of the brush 12 with the commutator 7.
The coupling element 15, the capacitor 14 and the spring 13 are located on the outer side of the motor, which allows for easier mounting of the brushes 12, because the spring 13 may only be mounted on the protuberance 23 in the final phase of the assemblage. The version allows for mounting the coupling elements of the following widths: 2.8, 4.8 or 6.3 mm at such spots that they do not extend the total length of the motor.
The superstructure of the basic motor version may also include the rectifier circuit 26, mounted at the front of the motor housing 1 on the commutator side and centered on the bearing guard 10 as shown in Figure 6. The rectifier circuit 26 is through its electric connections 27 directly coupled with the coupling elements of the motor 15, thereby securing the mechanical and the electric coupling between the rectifier circuit 26 and the motor. Such coupling mode allows for simple and economical motor superstructure whereby, due to the good utilization of space, the elements of the circuit 28 may be turned inwards towards the motor and, accordingly, do not prolong the basic length of the motor. In case that bigger elements are also required on the rectifier circuit, they must be turned outwards, which prolongs the motor for at maximum 20 mm.

Claims

PATENT CLAIMS
1. The improved bearing guard on the commutator side with the D.C. 5 commutator motor including permanent magnets characterized in that the integrated guides (11) of the brushes (12), the positioning of the protuberance (23) and the mechanical fixing of the coupling element (15) provide for electric connection between the capacitor (14) pin (16), o the brush (12) via the spring (13) and the electric connection of the motor requiring no additional work operations after the assemblage, whereby the coupling element (15), the capacitor (14) and the spring (13) of the brush (12) are mounted on the external side of the motor.
5
2. The improved bearing guard on the commutator side with the D.C. commutator motor including permanent magnets, according to claim 1 , characterized in that the seat (22) in the bearing guard (10) provides the exactly defined o position of the capacitor (14).
3. The improved bearing guard on the commutator side with the D.C. commutator motor including permanent magnets, according to claims 1 and 2, characterized in that next to the guide (11) of the brush (12) there is the groove (20) into which the flat end (21) of the spring (13) is propped upon the mounting of the spring (13) on the protuberance (23), while the operating end (24) of the spring (13) is propped on the coupling element (15).
4. The improved bearing guard on the commutator side with the D.C. commutator motor including permanent magnets, according to claims 1 through 3, characterized in that the operating end (24) and the flat end (21) of the spring (13) are separated for angle (A), due to their shape and in combination with their being mounted not only for pushing the brush (12) against the commutator (7), but also create considerable transversal and/or lateral component of the force.
5. The improved bearing guard on the commutator side with the D.C. commutator motor including permanent magnets, according to claim 4, characterized in that the lateral component of the force in the direction of the arrow (F2) represents at least 10% of the basic component of the force in the direction of the arrow (F1).
6. The improved bearing guard on the commutator side with the D.C. commutator motor including permanent magnets, according to claim 4, characterized in that the angle (A) between the flat end (21) and the operating end (24) of the spring (13) is at least 5°.
7. The improved bearing guard on the commutator side with the D.C. commutator motor including permanent magnets, according to claims 1 through 6, characterized in that the rectifier circuit (26) mounted on the front and centered on the bearing guard (10) is directly coupled with the two coupling elements (15) through its electric connections (27).
PCT/SI2002/000020 2001-07-23 2002-07-23 Improved brush holder for d.c. commutator motor with permanaent magnets WO2003010873A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002321978A AU2002321978A1 (en) 2001-07-23 2002-07-23 Improved brush holder for d.c. commutator motor with permanaent magnets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SIP-200100195 2001-07-23
SI200100195A SI21004A (en) 2001-07-23 2001-07-23 Improved bearing shield of direct current comutator motor with permanent magnets

Publications (2)

Publication Number Publication Date
WO2003010873A2 true WO2003010873A2 (en) 2003-02-06
WO2003010873A3 WO2003010873A3 (en) 2003-11-06

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PCT/SI2002/000020 WO2003010873A2 (en) 2001-07-23 2002-07-23 Improved brush holder for d.c. commutator motor with permanaent magnets

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AU (1) AU2002321978A1 (en)
SI (1) SI21004A (en)
WO (1) WO2003010873A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003073588A2 (en) * 2002-02-27 2003-09-04 BSH Bosch und Siemens Hausgeräte GmbH Electric motor
EP1763123A1 (en) * 2005-09-08 2007-03-14 Siemens Aktiengesellschaft System of brushes for an electric motor, casing comprising said system, electric motor with casing for brushes and actuator comprising said motor
DE102012221112A1 (en) 2011-11-18 2013-05-23 Domel d.o.o. Choke coil assembly for direct current commutator motor, has end shield which is provided with hole into which lower electrical terminal of choke coil is inserted, and leg is pressed against the spiral spring

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1280481A (en) * 1969-01-13 1972-07-05 Lucas Industries Ltd Brush assemblies for use in dynamo electric machines
FR2544927A1 (en) * 1983-04-21 1984-10-26 Bosch Gmbh Robert Small electrical commutator motor
US4501983A (en) * 1978-01-01 1985-02-26 Papst Motoren Kg Electric machine
GB2172754A (en) * 1985-02-25 1986-09-24 Mabuchi Motor Co Electric motor
EP0509683A2 (en) * 1991-04-16 1992-10-21 Mabuchi Motor Kabushiki Kaisha Miniature motor
EP0607032A1 (en) * 1993-01-14 1994-07-20 Mabuchi Motor Kabushiki Kaisha Miniature motor
EP0714154A1 (en) * 1994-11-24 1996-05-29 VORWERK & CO. INTERHOLDING GmbH Brush holder for an electric motor
DE19902433C1 (en) * 1999-01-22 2000-09-28 Buhler Motor Gmbh Commutator motor has brush bridge with holder slot for capacitor connecting wire connected to housing via contact element with plate with slot as part of clamp blade connector

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1280481A (en) * 1969-01-13 1972-07-05 Lucas Industries Ltd Brush assemblies for use in dynamo electric machines
US4501983A (en) * 1978-01-01 1985-02-26 Papst Motoren Kg Electric machine
FR2544927A1 (en) * 1983-04-21 1984-10-26 Bosch Gmbh Robert Small electrical commutator motor
GB2172754A (en) * 1985-02-25 1986-09-24 Mabuchi Motor Co Electric motor
EP0509683A2 (en) * 1991-04-16 1992-10-21 Mabuchi Motor Kabushiki Kaisha Miniature motor
EP0607032A1 (en) * 1993-01-14 1994-07-20 Mabuchi Motor Kabushiki Kaisha Miniature motor
EP0714154A1 (en) * 1994-11-24 1996-05-29 VORWERK & CO. INTERHOLDING GmbH Brush holder for an electric motor
DE19902433C1 (en) * 1999-01-22 2000-09-28 Buhler Motor Gmbh Commutator motor has brush bridge with holder slot for capacitor connecting wire connected to housing via contact element with plate with slot as part of clamp blade connector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003073588A2 (en) * 2002-02-27 2003-09-04 BSH Bosch und Siemens Hausgeräte GmbH Electric motor
WO2003073588A3 (en) * 2002-02-27 2004-02-05 Bsh Bosch Siemens Hausgeraete Electric motor
US7365459B2 (en) 2002-02-27 2008-04-29 Bsh Bosch Und Siemens Hausgeraete Gmbh Electric motor
HRP20040770B1 (en) * 2002-02-27 2009-10-31 Bsh Bosch Und Siemens Hausgerte Gmbh Electric motor
EP1763123A1 (en) * 2005-09-08 2007-03-14 Siemens Aktiengesellschaft System of brushes for an electric motor, casing comprising said system, electric motor with casing for brushes and actuator comprising said motor
DE102012221112A1 (en) 2011-11-18 2013-05-23 Domel d.o.o. Choke coil assembly for direct current commutator motor, has end shield which is provided with hole into which lower electrical terminal of choke coil is inserted, and leg is pressed against the spiral spring
CN103124116B (en) * 2011-11-18 2017-08-04 德梅尔有限公司 A kind of choke coil equipment of the Radio frequency interference of the rectifier motor with permanent magnet
DE102012221112B4 (en) 2011-11-18 2019-12-24 Domel d.o.o. Arrangement of a choke coil of a collector motor with permanent magnets to avoid RF interference

Also Published As

Publication number Publication date
SI21004A (en) 2003-02-28
AU2002321978A1 (en) 2003-02-17
WO2003010873A3 (en) 2003-11-06

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