WO2004021552A1 - Direct current motor - Google Patents
Direct current motor Download PDFInfo
- Publication number
- WO2004021552A1 WO2004021552A1 PCT/EP2003/008621 EP0308621W WO2004021552A1 WO 2004021552 A1 WO2004021552 A1 WO 2004021552A1 EP 0308621 W EP0308621 W EP 0308621W WO 2004021552 A1 WO2004021552 A1 WO 2004021552A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- motor
- stator
- bearings
- sensor device
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/10—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using light effect devices
-
- 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
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
Definitions
- the invention relates to a DC motor according to the preamble of claim 1 (DE 43 35 966 AI).
- the invention relates to the field of electronically commutated, brushless DC motors, which can be configured as internal rotor motors or external rotor motors.
- the invention relates to an internal rotor motor with a shaft, a rotor assembly having one or more permanent magnets arranged on the shaft, and with a stator assembly, e.g. comprises stator bodies constructed from sheet metal and phase windings. Two bearings are axially spaced on the shaft on the same side of the rotor magnet (s) to support the rotor assembly on one side relative to the stator assembly.
- This motor design in which the shaft is only supported on one side of the rotor assembly, is also referred to as the cantilever design.
- the motor according to the invention further comprises a sensor device for detecting a variable which is related to the rotational position, speed and / or torque of the rotor assembly relative to the stator assembly.
- the sensor device includes, for example, a position sensor.
- the DC motor according to the invention is intended for applications in the automotive sector, e.g. to support the steering or to drive a cooling water pump of a motor vehicle.
- Such engines are often used in the combustion engine compartment, where they are exposed to high ambient temperatures, pollution, splash water and the like, as well as strong vibrations.
- the motors must therefore be protected against these external influences and constructed as robustly as possible.
- Single-sided motors are often designed so that the shaft is mounted in a motor flange.
- the free end of the shaft and thus of the rotor faces an end cover of the motor, with connections for the power supply and signal lines.
- Electronically commutated direct current motors generally have a sensor for detecting the rotational position of the rotor relative to the stator in order to derive the commutation signal therefrom.
- this sensor is usually attached to the free rotor end of the motor, since this is freely accessible, is close to the external connections and therefore allows simple installation.
- the document DE 43 35 966 AI describes a drive device with a single-sided collectorless DC motor in which the stator consists of a ring that can be wound using ring winding technology. In order to achieve a compact structure, active and inactive components of the DC motor are arranged in the interior of the stator.
- the sensor device is arranged in the region of the shaft between the two bearings.
- a position for the sensor system was found in which the smallest positional deviations of the shaft occur in the radial direction. Even when the shaft is subjected to lateral loads, for example due to impacts or a belt drive, the deflection of the shaft in the radial direction between the two bearings is minimal, so that the change in the air gap between the motor shaft and the sensor system can be reduced to a minimum.
- the arrangement of the sensor device according to the invention between the two bearings has the additional advantage that the temperature inside the motor becomes lower with increasing distance from the motor coil system and is subject to fewer fluctuations, so that more stable operation of the sensor device can also be expected for this reason.
- an inductive sensor device which comprises an excitation coil and a measuring coil, which are positioned in a defined and reproducible position in the motor in order to generate a signal when the shaft rotates, which is related to the rotational position, speed and / or torque of the rotor assembly.
- two tooth tracks running around the circumference of the shaft are applied to the shaft, e.g. imprinted, which are designed according to the vernier principle.
- the excitation coil and the measuring coil are arranged relative to the shaft in such a way that, in conjunction with these tooth tracks, they can generate a high-resolution output signal which is a measure of the rotational position and speed of the motor shaft.
- the sensor device generates a position signal with high resolution, a position signal with low resolution and a speed signal, which are used to generate highly precise commutation signals.
- the two bearings are in particular mounted in a flange or a base plate of the motor, which is connected to an end face of the stator assembly.
- the mass of the flange and the bearing system not only form a stable bearing for the clamped end of the motor shaft, but can also largely compensate for temperature fluctuations.
- the motor according to the invention is preferably enclosed in a motor housing which surrounds the stator body of the stator assembly.
- the motor housing is closed at one end with a cover cap or the like, which has a connection device for power supply and signal lines.
- the other end of the motor housing is connected to the flange, the sensor device being arranged in the region of the flange between the two bearings.
- a flexible ribbon cable a so-called flex cable, is preferably provided, which is to be guided between the outer circumference of the stator body and the inside of the motor housing.
- Figure 1 is a schematic sectional view through a DC motor according to the invention.
- Figure 2 is a schematic sectional view of the arrangement of flange and rotor assembly to illustrate essential features of the DC motor according to the invention.
- FIG. 3 shows a perspective illustration of the stator body
- FIG. 4 shows a view similar to FIG. 3, a part of the housing surrounding the stator body being additionally shown;
- FIG. 5 shows a perspective illustration of a support plate for positioning and fixing the sensor device
- FIG. 6 shows a perspective enlarged view of a part of the flange with the carrier plate and the sensor device, parts of the flange being broken away for clarification;
- FIG. 7 is a view similar to FIG. 6 from a different angle
- FIG. 8 shows a perspective top view of a housing cover of the direct current motor
- 10a is a partial perspective view of a cylindrical motor housing
- FIG. 10b is a partial sectional view of the motor housing of FIG. 10a with the end cap inserted;
- FIG. 10c shows a sectional enlarged illustration of the detail X from FIG. 10b;
- FIG. 12 shows a schematic representation of a device for forming an axial positioning aid on a shaft of a DC motor
- Fig. 13 is a sectional view through part of the device of Fig. 12; 14 is a schematic perspective view of a shaft on which positioning projections are formed by plastic deformation; and
- Fig. 15 is a schematic perspective view of a shaft on which a ball bearing is mounted.
- Fig. 1 shows a schematic sectional view through a brushless DC motor according to the invention.
- the DC motor shown in FIG. 1 comprises a flange or a base plate 10 for fastening the motor, for example in a motor vehicle.
- the flange 10 is non-rotatably connected to a stator 12 which e.g. constructed from sheet metal stator body 14 and phase windings 16 comprises.
- a rotor 18 is rotatably connected to a shaft 20 and rotates relative to the flange 10 and the stator 12.
- the rotor 18 comprises a rotor magnet 22 and an iron yoke 24.
- the rotor 18 and the shaft 20 are in particular ball bearings via two roller bearings 26, 28 , One-sided bearing in the flange 10.
- a cylindrical motor housing 30 extends from the flange 10 to a housing cover 32 and engages around the stator body 14.
- the housing cover 32 has a first connection socket 34 for the power supply to the motor and a second connection socket 36 for control and signal lines.
- a connection pin 38 is indicated, which is connected to one of the windings 40.
- the housing cover 32 On its inside, the housing cover 32 has a relay holder 42, in which a switching relay 44 is held.
- a sensor device 46 is provided in the flange 10, which is assigned to a signal transmitter device 48 on the shaft.
- the signal generator 48 is formed by two tracks with vernier graduation stamped on the shaft, which are opposed by a position sensor 46.
- the sensor device 46 is connected via a ribbon cable 50 to connections (not shown) in the second socket 36 of the housing cover 32.
- the ribbon cable 50 is a so-called flex cable with, for example, new lines. It is guided through an oblique bore 52 between the two bearings 26, 28 out of the flange and runs on the outside of the stator body 14 between the stator body and the wall of the motor housing 30. The bore 52 is guided so that it is ensured that the Bearing seats in flange 10 cannot be weakened.
- the motor shaft 20 with the rotor 18 is clamped on one side in the flange 10 via the two bearings 26, 28, so that the rotor 18 is easily accessible.
- lateral stress on the shaft and flange can increase the radial deflection.
- the radial deflection of the shaft 20 at its free end 54 can become so great that reliable detection of the rotational position at this point is no longer guaranteed.
- the invention therefore proposes to accommodate the sensor device 46 in the region of the flange 10 between the two bearings 26, 28, where the radial deflection of the shaft 20 is least. Not only is the mechanical mounting of the sensor between the bearings 26, 28 the most stable, in this area the temperature fluctuations are also the smallest for the reasons explained.
- FIG. 2 shows a schematic sectional illustration of the arrangement of the flange 10 and the rotor assembly 18, which largely corresponds to an enlarged partial view of FIG. 1.
- the stator 12 and the housing cover 32 are omitted in this illustration.
- the same or corresponding parts are identified by the same reference numerals and are not described again.
- This ribbon cable 50 connects the sensor device 46 to connections in the housing cover 32. It leads from the sensor device 46 through the oblique bore 52 between the flange 10 and the phase winding 16 of the stator (not shown in FIG. 2) and extends along the outer circumference of the stator 12 (not shown in Fig. 2).
- FIG. 3 schematically shows a perspective illustration of a stator body, for example the stator body 14 from FIG. 1.
- the stator body 14 is constructed from a plurality of stator laminations which are layered one above the other and are not shown in detail in FIG. 3.
- the stator body can also be made from a single component.
- the round motor housing 30, see also FIG. 4, is completely filled by the stator with the phase windings, the outside of the stator body 14 abutting against the inside diameter of the housing 30 or only a small radial distance this one has.
- the stator body is designed as shown in FIG. 3.
- the stator body 14 is preferably constructed from a plurality of stator laminations layered one above the other and basically has a cylindrical diameter 60.
- the cylindrical diameter 60 serves for the central guidance of the stator body 14 in the cylindrical housing 30, as shown in FIG. 4.
- the outer circumference of the stator body 14 also has flats 62 and welding grooves 64 for connection to the housing 30.
- pin connections 66 are also indicated, which also serve to fasten the stator body 14 within the motor housing.
- a recess or space for the passage of the ribbon cable 50 is formed between each flat 62 and the inner diameter of the motor housing 30.
- the flats 62, welding grooves 64 and pin connections 66 are evenly distributed on the circumference of the stator body 14.
- the flattenings are preferably always arranged opposite a pole pair of the stator, because the flux density is minimal here.
- a uniform distribution of the flats 62 and welding grooves 64 on the circumference of the stator body 14 makes it possible to realize a twisted stamped package of stator laminations by arranging the flats 62 and weld grooves 64 with the same angular pitch as the twist angle during the packaging.
- stator body 14 With the design of the stator body 14 according to the invention, an easy-to-implement guide for a ribbon cable between the stator body 14 and the housing 30 is created.
- the distributed over the circumference of the stator body 14 several flattenings 62 have in addition to ensuring a uniform flow distribution the advantage that when installing the stator 12 in the flange 10 and the motor housing 30 whose angular position relative to the bore 50 in the flange 10 is relatively uncritical because the ribbon cable 50 can be guided past the stator at each of the flats 62.
- FIGS. 5 to 7 show a carrier plate 70 for fastening the sensor of the sensor device 46, which is applied to one end of the ribbon cable 50.
- the Strom ⁇ latte 70 has pins 72 for receiving the sensor, which can be pressed into the Träg ⁇ latte 70, for example.
- the Träg ⁇ latte 70 comprises on both longitudinal sides of crush beads 74 for mounting and holding the Träg ⁇ latte 70 in the motor flange 10, as explained in more detail below.
- FIGS. 6 and 7 show the support plate 70 with the sensor 46 mounted thereon in its installed position in the flange 10, parts of the flange being broken away for illustration.
- the sensor 46 is arranged on one end of the ribbon cable 50 and is soldered to it, for example.
- the end of the ribbon cable 50 with the sensor 46 thereon is fastened to the support plate 70 via the pins 72.
- the Spar ⁇ latte 72 is inserted into a pocket or guide groove 76, 76 ', which is formed on the flange 10.
- the Träg ⁇ latte 70 with its side edges, on which pinch beads 74 are formed, is firmly pressed into the pocket 76, 76 '.
- the crimped beads 74 deform and thus ensure that the carrier plate 70 is firmly seated in the flange 10.
- the ribbon cable 50 is led out of the flange 10 through the bore 52.
- the Träg ⁇ latte 70 can for example be made of a steel sheet, the pin 72 and the crimping beads 74 are formed by pressing the sheet.
- the carrier plate 70 is preferably manufactured as a stamped and bent part.
- the ribbon cable 50 with the sensor 46 thereon is connected to the pin 72, for example by riveting. For strain relief, it can be secured on the support plate 70 with an additional washer.
- FIG. 8 and 9 show a perspective top view and a perspective bottom view of the housing cover 32, which tightly seals the motor housing 30 and provides the necessary connections for the power supply and signal lines.
- the housing cover is as an end cap 32 is formed and has a plug / socket section 80 for the power supply lines and a plug / socket section 82 for signal lines. These are made in one piece with a disk-shaped cover 84.
- the plug / socket section 80 three connection pins 86 are provided for connecting the supply lines to the phase windings.
- the plug / socket section 82 in turn has a series of connection pins 88, 16 connection pins in the embodiment shown, for signal lines. While FIG. 8 shows the outer or upper side of the housing cover 32, which in the assembled state lies outside the motor, FIG. 9 shows the inner or lower side of the housing cover 32, the same components being identified with the same reference symbols.
- connection pins 86 for the phase windings can be seen, as well as bores 90 for receiving signal lines, which correspond to the connection pins 88 of the plug / socket section 82.
- a holder 92 for an electromechanical component, in particular a power switching component, such as a relay, is also provided on the inside of the housing cover 32. This holder 92 is also formed in one piece with the disk-shaped cover 84 and the plug / socket sections 80, 82 of the housing cover 32.
- FIG. 3 also shows a pressed-on ground contact 94, which is designed as a stamped and bent part.
- a housing cover is proposed according to the invention in which all electrical connections, for phase windings and signal lines, are made via plug connections and the associated plug / socket sections 80, 82 are integrally formed with the housing cover.
- the bracket 92 for a power switching component, in particular a relay 96 is also formed integrally with the housing cover. This further reduces the outlay for assembly.
- other functions such as the mounting and fixing of other motor components, can be integrated in the housing cover.
- the housing cover is designed as an end cap 32, which is preferably produced as an integral component by injection molding.
- 10a to 10c and 11a to 11c schematically show a first and a second embodiment for connecting the housing cover 32 to the motor housing 30, with FIG. 10c an enlarged partial view of FIG. 10b and FIG. 11c an enlarged partial view of FIG. 11b , each in the area of the circle marked with X.
- a cavity 104 is formed between a surface 100 of the motor housing and an adjacent surface 102 of the housing cover in order to seal and simultaneously glue the motor housing 30 and the housing cover 32 together.
- the cavity 104 is formed by an annular recess or groove on the outer circumference of the housing cover 32, which is inserted into the motor housing 30.
- a similar annular depression could alternatively or additionally be formed on the inner circumference of the housing 30.
- At least one opening 106 is made in the housing wall and is designed, for example, as a counterbore. To connect and seal the two parts 30, 32, a plastic with a sealing and adhesive function is injected into the annular cavity 104 via the opening 106.
- the cavity 104 forms a channel, and the material injected in the liquid state flows along this annular channel until it is completely filled.
- the material injected in the liquid state flows along this annular channel until it is completely filled.
- thermoplastic elastomers or two-component adhesives based on PU can be used as the material. After the material has solidified, the connection between the housing 30 and the housing cover 32 along the connection point can be subjected to mechanical loads and is sealed at the same time.
- connection and sealing compound can be routed to further sealing surfaces via a sprue point and a suitable further channel (not shown in the figures).
- connection and sealing of the two components When choosing the material for producing the connection and sealing of the two components, it must be taken into account that these can consist of different materials, such as metal or plastic, and that the material must form a tight connection with all materials.
- at least one ventilation opening for the sealing material should also be provided.
- the described device for connecting and sealing two components can be used wherever a mechanical connection of two surfaces with simultaneous sealing is necessary.
- it is applied to the described Electric motor for connecting the housing cover to the motor housing or the motor housing to the flange.
- the motor according to the invention in a motor vehicle, for example as an auxiliary motor for steering or driving the cooling water pump, this ensures that the motor is protected against environmental influences, such as splash water and other contaminants.
- FIG. 12 and 13 schematically show a device for producing an axial securing device on a shaft in a perspective or sectional view, and FIG. 14 shows the machined shaft.
- Fig. 12 shows schematically a shaft 20 with a rotor 18 which is mounted on the shaft.
- An annular groove 110 is formed in the shaft 20, as also shown in FIG. 14.
- a support and guide block 112 serves to hold the shaft 20 and guide a deformation tool 1 14, e.g. a stamp.
- a deformation tool 1 e.g. a stamp.
- This positive stop 116 serves as an axial stop for mounting components on the shaft.
- the stop is realized with minimal use of materials and effort for additional parts. This represents a significant improvement over the prior art.
- Several types of positive definition of axial bearing positions are known from the prior art. For example, a shoulder can be produced on a turned part, which prevents axial displacement. It is also known to snap a snap ring into a groove.
- the known methods usually require at least the use of several components or a starting material for the shaft which has a larger diameter than the final diameter of the shaft.
- positive stops for a component to be mounted on the shaft are formed on the shaft without the need for additional components or a shaft with a larger output diameter.
- the method also has the advantage that the stops can also be formed if components are already installed on the shaft in an earlier operation. These components can even be sensitive components such as ball bearings or magnetic rings.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03790854A EP1527508A1 (en) | 2002-08-09 | 2003-08-04 | Direct current motor |
JP2004531855A JP2005536177A (en) | 2002-08-09 | 2003-08-04 | DC motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10236704.3 | 2002-08-09 | ||
DE2002136704 DE10236704B3 (en) | 2002-08-09 | 2002-08-09 | DC motor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004021552A1 true WO2004021552A1 (en) | 2004-03-11 |
Family
ID=29723915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/008621 WO2004021552A1 (en) | 2002-08-09 | 2003-08-04 | Direct current motor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1527508A1 (en) |
JP (1) | JP2005536177A (en) |
DE (1) | DE10236704B3 (en) |
WO (1) | WO2004021552A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1386020A (en) * | 1918-12-23 | 1921-08-02 | Rosanoff Process Company | Fractionating apparatus |
JPH0378457A (en) * | 1989-08-17 | 1991-04-03 | Seiko Epson Corp | Motor provided with encoder |
US5072181A (en) * | 1986-12-22 | 1991-12-10 | Siemens Aktiengesellschaft | Angle position transmitter having a static magnetic field sensor and a magnet on the transmitter shaft for detecting a full revolution of the transmitter shaft |
JPH05284709A (en) * | 1992-03-27 | 1993-10-29 | Daikin Ind Ltd | Dc brushless motor |
DE4335966A1 (en) * | 1993-10-21 | 1995-04-27 | Licentia Gmbh | Drive device for a washing machine or a similar machine having a DC motor without a commutator |
JP2000086127A (en) * | 1998-09-14 | 2000-03-28 | Hitachi Ltd | Elevator |
-
2002
- 2002-08-09 DE DE2002136704 patent/DE10236704B3/en not_active Expired - Fee Related
-
2003
- 2003-08-04 EP EP03790854A patent/EP1527508A1/en not_active Withdrawn
- 2003-08-04 JP JP2004531855A patent/JP2005536177A/en active Pending
- 2003-08-04 WO PCT/EP2003/008621 patent/WO2004021552A1/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1386020A (en) * | 1918-12-23 | 1921-08-02 | Rosanoff Process Company | Fractionating apparatus |
US5072181A (en) * | 1986-12-22 | 1991-12-10 | Siemens Aktiengesellschaft | Angle position transmitter having a static magnetic field sensor and a magnet on the transmitter shaft for detecting a full revolution of the transmitter shaft |
JPH0378457A (en) * | 1989-08-17 | 1991-04-03 | Seiko Epson Corp | Motor provided with encoder |
JPH05284709A (en) * | 1992-03-27 | 1993-10-29 | Daikin Ind Ltd | Dc brushless motor |
DE4335966A1 (en) * | 1993-10-21 | 1995-04-27 | Licentia Gmbh | Drive device for a washing machine or a similar machine having a DC motor without a commutator |
JP2000086127A (en) * | 1998-09-14 | 2000-03-28 | Hitachi Ltd | Elevator |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 250 (E - 1082) 26 June 1991 (1991-06-26) * |
PATENT ABSTRACTS OF JAPAN vol. 018, no. 073 (E - 1503) 7 February 1994 (1994-02-07) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22) * |
Also Published As
Publication number | Publication date |
---|---|
EP1527508A1 (en) | 2005-05-04 |
DE10236704B3 (en) | 2004-01-15 |
JP2005536177A (en) | 2005-11-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1397853B1 (en) | Relay support device for an electric motor, in particular for an electrically commutated dc motor | |
EP3273577B1 (en) | Electric machine | |
EP1422809B1 (en) | Electric motor for a pump drive | |
EP1969700B1 (en) | Rotor and an electrical machine comprising such a rotor | |
DE102012109863A1 (en) | Brushless motor | |
WO2015048956A2 (en) | Positioning an overmolded stator for a clutch actuator or a transmission actuator and introducing a rotor position magnet into such an actuator | |
DE102014218034A1 (en) | Positioning a molded stator for a clutch actuator or a gear actuator and introducing a rotor magnet in such an actuator | |
WO2002033804A1 (en) | Rotor unit for an electromotor and an internal rotor electromotor | |
DE102013020094A1 (en) | Electric motor, in particular radiator fan motor | |
DE102008064131A1 (en) | Electric machine e.g. brushless direct current motor, has stator enclosing rotor, arrangements provided on faces of stator, flange components comprising connecting surface adjoining faces of stator, and winding wound onto stator and surface | |
DE102014201875A1 (en) | Electric motor with retaining washer and method for its assembly | |
DE10130117A1 (en) | Housing cover for an electric motor, in particular for an electronically commutated direct current motor | |
DE10236700B4 (en) | Device for holding and fixing a sensor device in a DC motor | |
DE10236702B3 (en) | Electronically-commutated brushless DC motor for automobile power steering or water pump, has sensor device coupled via flat ribbon cable to termination device at opposite end of motor housing | |
DE102006059135A1 (en) | Electrical machine, particularly brushless direct current motor for hard disk drives, motor vehicle area, has driving shaft, which is arranged in center of machine and is connected with rotor arrangement by cast part | |
WO2017118556A1 (en) | Torque sensor device for a motor vehicle, electric steering system, and motor vehicle comprising such a torque sensor device | |
DE102005050271A1 (en) | Inexpensive electrical machine, e.g. for vehicle seat adjustment, has circuit board loosely pre-mounted in pre-assembly group, circuit board and elastic element fixed between plug carrier, flange with clamp connector when machine assembled | |
DE10130139C1 (en) | Flange for an electric motor, especially for an electronically commutated DC motor | |
EP3391509B1 (en) | Electric motor | |
DE102020202680A1 (en) | Electric machine, a brake unit containing an electric machine and method for producing such a brake unit | |
EP1527286A1 (en) | Device and method for the axial positioning of a component on a shaft | |
DE10236704B3 (en) | DC motor | |
DE10236699A1 (en) | Housing cover for DC electric motor for automobile applications provided as injection moulded component with integral plug/socket sections on outside and component holder on inside | |
DE102012213075A1 (en) | Rotor assembly for an electric machine and bearing of the rotor assembly | |
DE102013101914A1 (en) | Modular-drive arrangement e.g. pump-drive arrangement, for driving impeller of liquid pump in e.g. washing machine, has housing base body connected with housing closure body and application-specific housing closure bodies for applications |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP US |
|
AL | Designated countries for regional patents |
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 IT LU MC NL PT RO SE SI SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003790854 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004531855 Country of ref document: JP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003790854 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2003790854 Country of ref document: EP |