EP1704631A1 - Electromotive drive - Google Patents
Electromotive driveInfo
- Publication number
- EP1704631A1 EP1704631A1 EP04803454A EP04803454A EP1704631A1 EP 1704631 A1 EP1704631 A1 EP 1704631A1 EP 04803454 A EP04803454 A EP 04803454A EP 04803454 A EP04803454 A EP 04803454A EP 1704631 A1 EP1704631 A1 EP 1704631A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive according
- section
- shielding element
- shaft
- opening
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- 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
- H02K11/30—Structural association with control circuits or drive circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/006—Structural associations of commutators
-
- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Definitions
- the invention relates to an electric motor drive, in particular auxiliary drive for use in vehicles, according to the preamble of claim 1.
- Auxiliary electric motor drives for use in vehicles for example in windshield wiper systems, power windows, electric seat adjustment devices, etc., are known in various designs and generally consist of an electric motor and a gear unit flanged to the electric motor or its housing.
- the motor or armature shaft of the electric motor extends through a through opening from the inside of the motor housing into the gear housing and is supported there in the area of the through opening or on a housing flange forming this through opening in a bearing (ball bearing).
- a control magnet is also often provided on the motor shaft within the transmission housing, which rotates with the motor shaft and interacts with at least one sensor which forms a control circuit for the motor Board is provided within the gearbox in the immediate vicinity of the orbit of the control magnet.
- the electric motors used in auxiliary drives of this type are fundamentally those in which the current supply and control to the armature winding take place via a commutator and carbon brushes interacting with it.
- the object of the invention is to show a drive which avoids damage to the bearing of the armature shaft and a malfunction of the electrical motor control in a particularly simple and inexpensive manner.
- the design according to the invention results in a simple and inexpensive solution for shielding the gear housing and the functional elements accommodated in this gear housing, in particular the bearing for the shaft and the circuit board against carbon abrasion or dust.
- the shielding element is at the same time a further functional element, for example a carrier element for the at least one control magnet, or forms this control magnet.
- the shielding element it is also possible for the shielding element to be provided on the commutator of the electric motor or to be part of this commutator.
- the shielding element is preferably an injection molded part made of plastic. If the control magnet is part of the shielding element, it can be produced by simply extrusion-coating at least one permanent magnet forming the control magnet. Additional measures to protect the circuit board against coal dust or abrasion, for example painting, ie covering the circuit board, the conductor tracks there and / or the contacts, the components, etc. with an insulating layer is no longer necessary in the configuration according to the invention. In particular, no shielding walls or shielding covers are necessary for the circuit board in the gearbox.
- Figure 1 in a simplified partial representation of the shaft of an electromotive drive together with a commutator, the brushes interacting with the commutator and the bearing of the shaft in a gear housing flanged to the electric motor, together with a magnet provided on the shaft with a shielding bush.
- FIG. 3 shows a representation similar to FIG. 1, but in a further embodiment
- FIG. 4 is a perspective view of the control magnet and the shielding bushing of the embodiment in FIG. 3.
- 1 is the armature shaft of an electromotive auxiliary drive, for example a reversing windshield wiper drive, which essentially consists of an electric motor and a gear unit flanged to the housing of the electric motor.
- an electromotive auxiliary drive for example a reversing windshield wiper drive
- FIGS. 1 and 2 of the electric motor Shown in FIGS. 1 and 2 of the electric motor is only the armature shaft 1, the commutator 2 arranged on the armature shaft 1 and rotating with this armature shaft, and the brush holder 3 for the carbon brushes 4 interacting with the commutator 2.
- the brush holder 3 is made in a known manner from a circuit board 5, which includes a circuit board opening 6 for the Passage of the armature shaft 1 and on which, among other things, two guides or holders for the brush brushes 3 forming quiver 7 are provided.
- the diameter of the circuit board opening 6 is larger than the diameter of the armature shaft 1.
- the periphery of the circuit board 5 is held in a shell-shaped housing flange 8.1 of the gear housing 8 in such a way that the surface 5 of the circuit board 5 is oriented perpendicular to the axis of the armature shaft 1 ,
- the housing (not shown) of the electric motor on the transmission side is closed with the flange 8.1.
- the armature shaft 1 extends through a through opening 9, which is provided in the housing flange 8.1, into the interior of the transmission enclosed by the gear housing 8 and is supported, among other things, in the gear housing with the ball bearing 10.
- the bearing 10 is located within the gear housing 8 at an axial distance from the through opening 9 or from the housing flange 8.1.
- a further circuit board 11 which is arranged parallel to the axis of the armature shaft 1 and is designed, for example, as a printed circuit board and has a large number of electrical components which serve to control the motor.
- a sensor 12 which e.g. is designed as a Hall sensor or chip and which interacts with an annular control magnet 13 which is provided on the armature shaft 1 on the same axis and rotates with the armature shaft 1.
- the control magnet 13, the z. B. in a ring e.g. made of plastic has at least one, but preferably a plurality of permanent magnets, is used to control and / or monitor the electric motor, for example to monitor and / or control the speed and / or the reversing movement.
- the control magnet 13 is located within the transmission housing at a distance from the through opening 9, for which a relative Large cross section is required because the bearing 10, but also the control magnet 13 must be mounted through the through opening 9.
- control magnet 13 is located on a hub-shaped or disk-shaped section 14 of a shielding element 15 made as a molded part made of plastic.
- This shielding element 15 furthermore has a sleeve-shaped section 16, which protrudes beyond an end face of the section 14, and a disk-shaped section 17, which is integrally formed on the end of section 16 which is remote from section 14.
- the shielding element 15 is mounted on the armature shaft 1 in a rotationally fixed manner, in such a way that the sections 14, 16 and 17 enclose the armature shaft 1 and the disk-shaped section 17 oriented with its end faces perpendicular to the axis of the armature shaft 1 is located in the through opening 9 and this Opening almost completely, d. H. closes except for an annular gap of narrow width.
- the circular disk-shaped section 17 has an outer diameter that is only slightly smaller than the diameter of the likewise circular through opening 9, so that the interior of the gear housing 8 is effectively protected against the ingress of carbon brush dust by the disk 17 or by the shielding element formed by the molded part 15 is.
- FIGS. 3 and 4 show a further possible embodiment of the invention, in which a shielding bushing or shielding element 15a is used instead of the shielding bushing or the shielding element 15, which in turn is produced as a molded body made of plastic, with a circular cylindrical shape on the outer surface Section 18, on which the control magnet 13 is arranged, and a section 19 axially adjoining the section 18, which is also circular cylindrical in shape on the outer surface and extends in the assembled state with an axial partial length into the through opening 9 of the housing flange 8.1.
- Both sections 18 and 19 lie with their axes coaxially with the axis of that not shown in FIGS. 3 and 4 Armature shaft 1.
- the outer diameter of the section 19 is only slightly smaller than the diameter of the through opening 9.
- the shielding element 15a is located between the through opening 9 and the bearing 10, which is provided within the gear housing 8.
- the two sections 18 and 19 are provided with a multiplicity of chambers 20 and 21, which, however, are closed by a central web running radially to the axis of the shielding element 15a in the interior of the shielding element.
- the respective shielding element 15 or 15a is located in the area of the gear housing 8 or the housing flange 8.1 and that the shielding element also serves as a carrier or hub for the control magnet 13.
- the shielding element or the shielding bushing it is also possible for the shielding element or the shielding bushing to be produced in one piece with the control magnet.
- the shielding element extends from the motor side into the through opening 9 and in this case is made, for example, in one piece with the commutator 2 or the insulating body of this commutator.
- control magnet 13 directly as a shielding element and to arrange it for this purpose at least over part of its axial width in the through opening 9, the control magnet then having the at least one permanent magnet on the end face, and with it the interior of the gear housing 8 facing end cooperates with at least one radially projecting over the circuit board 11 sensor (z. B. Hall sensor or chip).
- circuit board 11 sensor z. B. Hall sensor or chip
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10357018A DE10357018A1 (en) | 2003-12-05 | 2003-12-05 | Electromotive drive |
PCT/EP2004/013715 WO2005055394A1 (en) | 2003-12-05 | 2004-12-02 | Electromotive drive |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1704631A1 true EP1704631A1 (en) | 2006-09-27 |
Family
ID=34638423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04803454A Withdrawn EP1704631A1 (en) | 2003-12-05 | 2004-12-02 | Electromotive drive |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080211325A1 (en) |
EP (1) | EP1704631A1 (en) |
JP (1) | JP2007513598A (en) |
KR (1) | KR20060113731A (en) |
CN (1) | CN100555804C (en) |
DE (1) | DE10357018A1 (en) |
WO (1) | WO2005055394A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006012489U1 (en) * | 2006-08-14 | 2007-12-27 | Vorwerk & Co. Interholding Gmbh | High speed electric motor |
DE102007058348B4 (en) * | 2006-12-05 | 2014-04-03 | Mitsuba Corp. | Engine with reduction mechanism |
DE202012000412U1 (en) * | 2012-01-18 | 2012-04-17 | Dewertokin Gmbh | Electric geared motor for furniture adjustment |
USRE47564E1 (en) * | 2012-04-26 | 2019-08-06 | Denso Corporation | Motor |
DE102014110602A1 (en) * | 2014-02-28 | 2015-09-03 | Johnson Electric Germany GmbH & Co. KG | Device with a moving component |
DE102014210725A1 (en) * | 2014-06-05 | 2015-12-17 | Em-Motive Gmbh | Magnetic sensor for a rotor shaft of an electric machine and electric machine |
US11316412B2 (en) * | 2017-02-21 | 2022-04-26 | Denso Corporation | Motor including sensor magnet |
DE102017204415A1 (en) * | 2017-03-16 | 2018-09-20 | Robert Bosch Gmbh | EC motor with an annular sensor magnet |
DE102017223061A1 (en) * | 2017-12-18 | 2019-06-19 | Bühler Motor GmbH | COMMUTATOR ENGINE AND SERIES OF COMMUTATOR MOTORS |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3159354A (en) * | 1962-05-16 | 1964-12-01 | Gen Electric | Series motor construction for a food waste disposal unit |
DE2259900A1 (en) * | 1972-12-07 | 1974-06-12 | Bosch Gmbh Robert | CRAFT MACHINE |
USRE37058E1 (en) * | 1980-05-10 | 2001-02-20 | Papst Licensing Gmbh & Co. Kg | Disk storage device having contamination seals |
US4779165A (en) * | 1981-09-07 | 1988-10-18 | Papst-Motoren Gmbh & Co. Kg | Disk storage drive |
USRE38662E1 (en) * | 1980-05-10 | 2004-11-30 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a sealed bearing tube |
US5216557A (en) * | 1981-09-07 | 1993-06-01 | Papst-Motoren Gmbh & Co. Kg | Disk storage device having a brushless dc drive motor |
USRE38673E1 (en) * | 1980-05-10 | 2004-12-21 | Papst Licensing Gmbh & Co. Kg | Disk storage device having a hub sealing member feature |
USRE38601E1 (en) * | 1980-05-10 | 2004-09-28 | Papst Licensing, GmbH & Co. KG | Disk storage device having a radial magnetic yoke feature |
USRE35792E (en) * | 1981-09-07 | 1998-05-12 | Papst Licensing, Gmbh | Disk storage drive |
USRE34412E (en) * | 1981-09-07 | 1993-10-19 | Papst-Motoren Gmbh & Co. Kg | Disk storage drive having motor drive with non-corrodible hub |
JPH0782699B2 (en) * | 1984-06-01 | 1995-09-06 | パプスト ライセンシング ゲーエムベーハー | Disk drive |
US4882511A (en) * | 1984-06-01 | 1989-11-21 | Papst-Motoren Gmbh & Co. Kg | Brushless three-phase D.C. motor |
EP0601228B1 (en) * | 1992-12-08 | 1994-10-19 | Siemens Aktiengesellschaft | Electric motor drive |
DE9406702U1 (en) * | 1993-07-29 | 1994-06-30 | Siemens AG, 80333 München | Drive unit |
US6417595B1 (en) * | 2000-05-24 | 2002-07-09 | Mcmillan Electric Company | Spark suppression dust sealing for a motor apparatus |
GB0111535D0 (en) * | 2001-05-11 | 2001-07-04 | Johnson Electric Sa | Gear motor for power tool |
DE50301345D1 (en) * | 2002-02-18 | 2006-02-23 | Ebm Papst St Georgen Gmbh & Co | ELECTRONICALLY COMMUTED INTERIOR MOTOR |
-
2003
- 2003-12-05 DE DE10357018A patent/DE10357018A1/en not_active Withdrawn
-
2004
- 2004-12-02 US US10/596,172 patent/US20080211325A1/en not_active Abandoned
- 2004-12-02 JP JP2006541899A patent/JP2007513598A/en active Pending
- 2004-12-02 CN CNB2004800361432A patent/CN100555804C/en not_active Expired - Fee Related
- 2004-12-02 WO PCT/EP2004/013715 patent/WO2005055394A1/en active Application Filing
- 2004-12-02 KR KR1020067011724A patent/KR20060113731A/en not_active Application Discontinuation
- 2004-12-02 EP EP04803454A patent/EP1704631A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2005055394A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005055394A1 (en) | 2005-06-16 |
DE10357018A1 (en) | 2005-08-25 |
CN1890860A (en) | 2007-01-03 |
JP2007513598A (en) | 2007-05-24 |
CN100555804C (en) | 2009-10-28 |
US20080211325A1 (en) | 2008-09-04 |
KR20060113731A (en) | 2006-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20060526 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WALTHER, BERND Inventor name: HEUBERGER, CHRISTOF Inventor name: RIENHARDT, HANS-PETER |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20070511 |
|
GRAJ | Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR1 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090925 |