EP4005071A1 - Moteur électrique à courant continu sans balais pour système d'essuyage de véhicule automobile - Google Patents
Moteur électrique à courant continu sans balais pour système d'essuyage de véhicule automobileInfo
- Publication number
- EP4005071A1 EP4005071A1 EP20734245.2A EP20734245A EP4005071A1 EP 4005071 A1 EP4005071 A1 EP 4005071A1 EP 20734245 A EP20734245 A EP 20734245A EP 4005071 A1 EP4005071 A1 EP 4005071A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- rotor
- electronic card
- motor
- magnet
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 5
- 230000005355 Hall effect Effects 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- 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
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
-
- 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
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Definitions
- the subject of the invention is an electric motor, preferably brushless, for a motor vehicle wiping system.
- an electric motor mainly comprises a rotor and a stator.
- the stator includes a plurality of rotor electromagnetic excitation coils while the rotor includes a multi-pole magnet.
- the electric motor is configured so that when the coils are supplied with electric current, a magnetic field is created, generating rotational movement of the multipolar magnet which drives a rotating motor shaft.
- the motor shaft carries a worm gear meshing a toothed wheel integral with an output shaft.
- the electric motor Due to the insertion of the electric motor in the wiper system of the electric vehicle, the electric motor must be as compact and light as possible.
- a brushless electric motor in particular for a wiping device of a motor vehicle, comprising a first part, called an electrical part, comprising a stator and a rotor, the stator comprising a plurality of electromagnetic excitation coils and the rotor being mounted to drive a motor shaft in rotation about an axis of rotation, the motor also comprising a second part, called electronic, comprising an output shaft and a reduction mechanism, the reduction mechanism comprising a worm of the motor shaft and a toothed wheel shaped to be meshed by the endless portion and to drive the output shaft in rotation, the electric motor comprising at least one bearing for guiding the rotation of the motor shaft , and a multipolar magnet for measuring the position of the rotor, the bearing being arranged on the motor shaft between said rotor position measuring magnet and the worm, so that said electrical part includes the rotor position measuring magnet.
- the motor has compartmentalisation between the electrical part on the one hand and the electronic part on the other hand, which simplifies assembly and ensures better resistance of the motor shaft to bending.
- the motor comprises an electronic card provided with a first part, called the main part, and with a second part, called the transverse part, projecting out of the main part towards the electrical part, the part transverse carrying a magnetic sensor configured to cooperate with the multipolar magnet.
- the transverse part is arranged opposite the multipolar magnet.
- the motor comprises a part, called an intermediate part, comprising a ring configured to be mounted around the motor shaft and comprising a connector.
- the connector is configured for the transmission of power signals to the stator and the transmission of rotor position signals.
- the motor comprises an auxiliary electronic card dedicated to determining the position of the rotor.
- the auxiliary electronic card is arranged in an orientation parallel or perpendicular to said main part.
- the electronic card is arranged opposite the multipolar magnet and is provided with a magnetic sensor configured to cooperate with the multipolar magnet.
- the auxiliary electronic card is supported by at least the ring and / or the connector of the intermediate part.
- Figure 1 illustrates a perspective view of an electric motor according to a first embodiment of the invention
- Figure 2 illustrates a bottom view of the motor of Figure 1, a cover not being illustrated;
- Figure 3 illustrates a perspective side view of the motor of Figure 1, without housing
- Figure 4 illustrates a perspective view of an electric motor according to a second embodiment of the invention
- Figure 5 illustrates a perspective side view of the motor of Figure 4, without housing
- Figure 6 illustrates another perspective side view of the motor of Figure 4, without housing
- Figure 7 illustrates a perspective view of an intermediate part of the electric motor of Figure 4.
- Figure 8 illustrates a perspective view of a housing portion of the electric motor of Figure 4.
- the invention relates to a brushless electric motor, preferably continuous, for a motor vehicle wiping system, referenced 1 in the figures.
- the invention is now described with reference to the first embodiment of Figures 1 to 4.
- the motor 1 comprises an electrical part 2 and an electronic part 3.
- the electrical part 2 comprises a rotor 4 and a stator 5.
- the stator 5 comprises a plurality of electromagnetic excitation coils 6 of the rotor 4.
- the rotor 4 comprises a multipolar magnet mounted to be driven in a rotational movement around an axis of rotation, referenced L.
- the electric motor 1 is configured so that the rotor 4 rotates in the stator 5, which causes a rotation of a shaft 8, said motor shaft, 8, integral with the rotor 4.
- the motor shaft 8 extends along the axis of rotation L.
- the electronic part 3 comprises a worm 9 of the motor shaft 8 and a toothed wheel 10 mounted to be meshed by the worm 9.
- the electronic part 3 also comprises an output shaft 11 shaped to be driven rotating by the toothed wheel 10.
- the threaded part 9 and the toothed wheel 10 form a gear motor mechanism M, the speed of rotation of the output shaft 1 1 being less than the speed of rotation of the motor shaft 8.
- the output shaft 1 1 is substantially perpendicular to the motor shaft 8.
- a bearing 12 ensures the guidance of the drive shaft 8.
- the bearing comprises, as is known to those skilled in the art, an inner ring and an outer ring separated by a cage provided rolling elements, the inner and outer rings being decoupled from one another.
- the electric motor 1 comprises a multipolar magnet 15 disposed in the electrical part 2, the bearing 12 being mounted between the multipolar magnet 15 and the worm 9.
- the magnet 15 forming an integral part of the electric part 2 the electric motor 1 is compartmentalized between the electric part 2 on the one hand and the electronic part 3 on the other hand. Due to this clear separation of functions between electric 2 and electronic parts 3, the electric motor 1 is made more reliable and more compact.
- the position of the bearing 12 as close as possible to the wheel 10 makes it possible to ensure better resistance to bending, that is to say that the motor shaft 8 has a deformation or a break for a higher bending force.
- the multipole magnet 15 is a flat cylinder mounted on the motor shaft 8.
- the electric motor 1 also comprises an electronic card 16, illustrated in Figures 2 and 3, comprising a first part 17, said main, and a second part 18, called transverse, and projecting out of the main part 17 towards the electrical part 2.
- the electronic card (16) includes the circuits and electronic components necessary for powering and switching the stators and for controlling the motor.
- the main part is arranged opposite the worm 9 of the motor shaft 8.
- the transverse part 18 is arranged opposite the multipolar magnet 15 and carries a magnetic sensor 19, for example Hall effect, to detect the changes of poles of the multipolar magnet 15, so that the assembly formed by the multipolar magnet 15 and the magnetic sensor 19 constitutes a sensor for measuring the position of the rotor 4.
- a magnetic sensor 19 for example Hall effect
- each of the main 17 and transverse parts 18 has the general shape of a parallelepiped, the transverse part 18 having a width less than a length of the main part 17.
- the transverse part 18 is a narrow protuberance, which makes it possible to install other elements of the motor 1 in the space between the main part 17 and the transverse part 18 and thus to increase the compactness of the electric motor 1.
- the electronic card 16 also includes pins 20 for supplying the coils 6.
- the electric motor 1 comprises a housing 21 having a cover 22 and a cover 23 integral with one another so as to form a housing for the mechanism M and for the electronic card 16.
- the housing 21 also includes a housing 24 for the rotor 4 and stator 5 assembly.
- the cover 23 is shaped to cover in particular the toothed wheel 10 and the electronic card 16 and comprises a restriction 25 permitted by the fine projection that constitutes the transverse part 18 relative to the part 17, which ensures, as already indicated , better compactness of the engine 1.
- the motor 1 comprises an electrical part 2 and an electronic part 3.
- the electrical part 2 comprises a rotor 4 and a stator 5.
- the stator 5 comprises a plurality of electromagnetic excitation coils 6.
- the rotor 4 comprises a multipolar magnet mounted to be driven in a rotational movement around it. an axis of rotation, referenced L.
- the electric motor 1 is configured so that the rotor 4 rotates in the stator 5, which causes a rotation of a shaft 8, said motor shaft, 8, integral with the rotor 4.
- the motor shaft 8 extends along the axis of rotation L.
- the electronic part 3 comprises a worm 9 of the motor shaft 8 and a toothed wheel 10 mounted to be meshed by the worm 9.
- the electronic part 3 also comprises an output shaft 1 1 shaped to be driven in rotation by the toothed wheel 10.
- the threaded part 9 and the toothed wheel 10 form a gear motor mechanism M, the speed of rotation of the output shaft 1 1 is lower than the speed of rotation of the motor shaft 8.
- the output shaft 1 1 is substantially perpendicular to the motor shaft 8.
- a bearing 12 provides guidance for the drive shaft 8.
- the bearing comprises, as is known to those skilled in the art, a inner ring and outer ring separated by a cage provided with rolling elements, the inner and outer rings being decoupled from each other.
- the electric motor 1 comprises a multipolar magnet 15 disposed in the electrical part 2, the bearing 12 being mounted between the multipolar magnet 15 and the worm 9.
- the electric motor 2 is compartmentalized between the electrical part 2 on the one hand and the electronic part 3 on the other hand. Due to this clear separation of functions between electric 2 and electronic 3 parts, the electric motor 1 is made more reliable and more compact.
- the position of the bearing 12 as close as possible to the wheel 10 makes it possible to ensure better resistance to bending, that is to say that the motor shaft 8 presents a deformation or a break for a higher bending force.
- the multipolar magnet 15 is a ring mounted on the motor shaft 8.
- the electric motor 1 also comprises an electronic card 16 carrying pins 20 for supplying the coils 6.
- the electronic card 16 has a general parallelepipedal shape.
- the electric motor 1 also comprises an intermediate part 26 disposed between the multipolar magnet 15 and the guide bearing 12.
- the intermediate part 26 comprises a ring 27 shaped to be mounted around the motor shaft 8 and surmounted by an electrical connector 28 integral with the ring 27.
- Ring 27 ensures the mechanical alignment of the arrangement.
- the electrical connector 28 provides for the transmission of power signals (ie, the currents for the electrical supply to the coils), as well as the transmission of rotor position signals, as will now be explained.
- the intermediate part 26 allows the combination of the three functions which are the mechanical alignment, the power transmission (power supply to the stator coils) and the control transmission (position of the rotor).
- the connector 28 comprises a housing portion 29 extending from the ring 27 to the magnet 15 and a housing portion 30 extending from the ring 27 to the electronic card 16, the notches 20 of supply to the coils passing through the housings 29 and 30.
- the connector 28 also comprises an auxiliary electronic card 31 disposed opposite the multipolar magnet 15.
- the electronic card 31 carries a magnetic sensor 19, for example Hall effect, in order to detect the changes in the poles of the multipolar magnet 15, so that the assembly formed by the multipolar magnet 15 and the magnetic sensor 19 constitutes an angular position sensor of the rotor 4.
- the auxiliary electronic card 31 is advantageously dedicated only to the sensor 19, which ensures that it is compact.
- the auxiliary electronic card is arranged in an orientation parallel to the electronic card 16.
- the auxiliary electronic card 31 could be arranged in an orientation perpendicular to the electronic card 16.
- the auxiliary electronic card 31 is preferably carried by the ring 27 or the connector 28, but could also be mounted freely in the housing in another orientation and electrically connected to the electronic card by eg flexible conductors.
- the electric motor 1 comprises a housing 21 comprising a cover 22 and a cover 23 integral with one another so as to form a housing of the mechanism M and of the electronic card 16.
- the housing 21 also comprises a housing 24 of the rotor 4, stator 5 assembly.
- the cover 22 comprises a housing 32 for receiving the ring 27 and an orifice 33 for housing the connector 28.
- the intermediate part 26 keeps a housing unchanged from the state of the art, which avoids modifying the production lines of known electric motors.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1908797A FR3099659B1 (fr) | 2019-07-31 | 2019-07-31 | Moteur électrique à courant continu sans balais pour système d’essuyage de véhicule automobile |
PCT/EP2020/068312 WO2021018496A1 (fr) | 2019-07-31 | 2020-06-29 | Moteur électrique à courant continu sans balais pour système d'essuyage de véhicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4005071A1 true EP4005071A1 (fr) | 2022-06-01 |
Family
ID=68654713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20734245.2A Pending EP4005071A1 (fr) | 2019-07-31 | 2020-06-29 | Moteur électrique à courant continu sans balais pour système d'essuyage de véhicule automobile |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220348166A1 (fr) |
EP (1) | EP4005071A1 (fr) |
JP (1) | JP7432706B2 (fr) |
CN (1) | CN114128105B (fr) |
FR (1) | FR3099659B1 (fr) |
WO (1) | WO2021018496A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3134259A1 (fr) | 2022-03-29 | 2023-10-06 | Valeo Systèmes D’Essuyage | Ensemble moteur pour un dispositif d’essuyage |
FR3143493A1 (fr) | 2022-12-15 | 2024-06-21 | Valeo Systèmes D’Essuyage | Ensemble moteur pour un dispositif d’essuyage |
FR3143492A1 (fr) | 2022-12-15 | 2024-06-21 | Valeo Systèmes D’Essuyage | Ensemble moteur pour un dispositif d’essuyage |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69607371T2 (de) * | 1995-11-16 | 2000-08-24 | Lucas Industries Ltd | Verbesserungen in elektrischen stellgliedern für fahrzeugsysteme |
US6756711B2 (en) * | 2000-12-27 | 2004-06-29 | Asmo Co., Ltd. | Motor having control circuit board for controlling its rotation |
DE102013006854A1 (de) * | 2012-04-26 | 2013-10-31 | Asmo Co., Ltd. | Motor |
DE102013206400A1 (de) * | 2013-04-11 | 2014-10-16 | Robert Bosch Gmbh | Elektrischer Antrieb für ein Kraftfahrzeug |
CN103978954B (zh) * | 2014-05-23 | 2016-08-24 | 电子科技大学 | 一种新型气动雨刮器 |
WO2016010021A1 (fr) * | 2014-07-15 | 2016-01-21 | 株式会社ミツバ | Moteur d'essuie-glace sans balais |
DE102015220900A1 (de) * | 2015-10-27 | 2017-04-27 | Robert Bosch Gmbh | Wischerdirektantrieb |
FR3056355B1 (fr) * | 2016-09-22 | 2018-09-07 | Valeo Systemes D'essuyage | Moteur electrique a courant continu sans balais pour systeme d'essuyage de vehicule automobile |
FR3066970B1 (fr) * | 2017-06-02 | 2021-01-01 | Valeo Systemes Dessuyage | Moto-reducteur pour systeme d'essuyage de vehicule automobile |
-
2019
- 2019-07-31 FR FR1908797A patent/FR3099659B1/fr active Active
-
2020
- 2020-06-29 EP EP20734245.2A patent/EP4005071A1/fr active Pending
- 2020-06-29 US US17/627,411 patent/US20220348166A1/en active Pending
- 2020-06-29 CN CN202080052831.7A patent/CN114128105B/zh active Active
- 2020-06-29 JP JP2022506205A patent/JP7432706B2/ja active Active
- 2020-06-29 WO PCT/EP2020/068312 patent/WO2021018496A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
FR3099659B1 (fr) | 2022-06-24 |
CN114128105B (zh) | 2024-06-11 |
CN114128105A (zh) | 2022-03-01 |
FR3099659A1 (fr) | 2021-02-05 |
WO2021018496A1 (fr) | 2021-02-04 |
US20220348166A1 (en) | 2022-11-03 |
JP7432706B2 (ja) | 2024-02-16 |
JP2022542604A (ja) | 2022-10-05 |
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