EP3254363A1 - Unité d'entraînement pour un système d'essuie-glace - Google Patents

Unité d'entraînement pour un système d'essuie-glace

Info

Publication number
EP3254363A1
EP3254363A1 EP16701175.8A EP16701175A EP3254363A1 EP 3254363 A1 EP3254363 A1 EP 3254363A1 EP 16701175 A EP16701175 A EP 16701175A EP 3254363 A1 EP3254363 A1 EP 3254363A1
Authority
EP
European Patent Office
Prior art keywords
drive
output shaft
shaft
drive unit
transmission
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Withdrawn
Application number
EP16701175.8A
Other languages
German (de)
English (en)
Inventor
Peter Braun
Michael Forscht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3254363A1 publication Critical patent/EP3254363A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B60S1/16—Means for transmitting drive
    • B60S1/166—Means for transmitting drive characterised by the combination of a motor-reduction unit and a mechanism for converting rotary into oscillatory movement
    • 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
    • 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
    • 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
    • H02K7/10—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

Definitions

  • the present invention relates to a drive unit for a wiper system, with an electronically commutated drive motor having a drive shaft, and with a transmission having an output shaft drivable by the drive shaft. Moreover, the present invention relates to a method for
  • Such drive units for wiper systems are known from the prior art.
  • DE 10 2009 047 566 A1 describes a drive unit for a windshield wiper, in which a drive shaft is driven by an electric motor and connected via a worm gear with an output element, wherein the electric motor is pivotally mounted, so that a distance between the axis of the output element and the drive shaft is adjustable.
  • a drive unit for a wiper system in which a drive motor and a worm gear are arranged in a common housing. Furthermore, from DE 10 2009 055 396 A1 a sensor for detecting a rotational position of a rotor of the drive motor is known, which is arranged in the common housing in order to control the electrical control of the drive motor forming brushless DC motor. From DE 10 2010 064 151 A1 a wiper motor is also known, the one
  • Gearbox is assigned, in which a driven via a drive wheel output shaft is rotatably mounted.
  • a contact fastened which is designed to short circuit of two arranged in the transmission housing shorting elements to allow for switched off wiper motor displacement of the wiper motor driven by wiper arms in an associated parking position.
  • An object of the invention is therefore to provide a drive unit for a wiper system, which is inexpensive to produce and in particular can dispense with a drive shaft associated with an angular position sensor for controlling a corresponding, electronically commutated drive motor.
  • a drive unit for a wiper system with an electronically commutated drive motor having a drive shaft, and with a transmission having an output shaft driven by the drive shaft.
  • the output shaft of the transmission is associated with at least one angular position sensor for determining a respective angular position of the output shaft.
  • the drive motor is designed in the manner of a brushless DC motor.
  • a brushless DC motor is particularly easy and accurate to control and regulate, so that a particularly precise speed control even at low speeds, as they typically occur in drive units for wiper systems, is possible.
  • the drive shaft of the drive motor and the output shaft of the transmission are arranged at a predetermined angle to each other, in particular at right angles. This makes it possible to realize a compact and space-saving design of the drive unit, whereby the transmission housing can be made compact and small, which saves weight and manufacturing costs. Thus, the goal of a relatively inexpensive drive unit is achieved.
  • Gear is arranged a driven by the drive shaft of the drive motor gear, which is designed in particular as a gear.
  • the at least one angular position sensor is arranged at least partially on the gear wheel.
  • the at least one angular position sensor has a signal transmitter and a signal receiver operatively connected to the signal receiver, wherein the signal transmitter is arranged on the gear wheel.
  • the signal generator is designed as a magnet.
  • a magnet can be easily and inexpensively integrated into the gear and requires no additional power supply, but permanently emits a signal in the form of its magnetic field. This signal is reliable, easy and inexpensive to detect with known signal receivers and sufficiently accurate for a determination of an angular position.
  • the signal generator is designed as an optical signal generator.
  • the transmission has a gear housing, in which the drive shaft of the drive motor and the output shaft of the transmission are arranged at least in sections at the predetermined angle to each other.
  • the gear housing Through the gear housing, the meshing teeth of the drive shaft and the output shaft are protected from contamination.
  • a bearing of the drive shaft or the output shaft can be integrated in such a transmission housing, whereby the maintenance of the predetermined angle between the drive shaft and output shaft is facilitated and a bend, or a deflection of the respective shaft can be reduced.
  • the transmission housing has a cover, wherein in the cover an evaluation and / or a control unit are integrated.
  • the gear housing can be closed at least on one side, whereby the risk of contamination and damage is reduced. Integrating the controller and or transmitter in the lid offers several advantages. On the one hand, a short way and thus ne short signal line between evaluation and control unit can be realized, which protects the signal from interference. On the other hand, a receptacle for the control unit and / or the evaluation can be easily integrated into the lid, especially when the lid is designed as a plastic injection molded part. In addition, the control unit and transmitter are protected by the lid against contamination and damage, which in turn increases the longevity of the drive unit as a whole.
  • the at least one angular position sensor is an absolute angle sensor.
  • the transmission is designed in the manner of a worm gear.
  • Worm gears are particularly suitable for high gear ratios at low speeds and are therefore preferred in the proposed drive unit for a wiper system.
  • the problem is also solved by a method for determining an angular position of a drive shaft of an electronically commutated drive motor of a drive unit for a wiper system, wherein the drive unit has a transmission with an output shaft driven by the drive shaft.
  • a Abtnebswellenwinkellage the output shaft of the transmission is determined in a first step by means of at least one of the output shaft associated angular position sensor, and in a second step, a drive shaft angular position of the drive shaft of the drive motor is determined based on the determined Abtnebswellenwinkellage.
  • An improvement of the proposed method is that based on the drive shaft angle position of the drive shaft, a commutation of the drive motor is controlled.
  • the drive motor can be commutated at the optimum time, which reduces the energy requirement of the drive motor.
  • the signal of the signal receiver can easily be prepared electronically and transmitted to the control unit.
  • the controller can be used to control the electronically commutated drive motor at the determined, respectively optimal times.
  • Fig. 1 is an exploded view of a drive unit according to the invention for a wiper system.
  • the drive unit 100 preferably has an electronically commutated drive motor 10, which is preferably designed as a brushless DC motor 1 1 in the illustrated embodiment and for the invention.
  • This drive motor 10 illustratively has a rotor 20 which is non-rotatably connected to a drive shaft 15 and drives this drive shaft 15.
  • the drive motor 10 also has a housing 25 and at least one bearing 29, wherein the drive shaft 15 of the drive motor 10 or the rotor 20 is preferably mounted rotatably in the housing 25 via the bearing 29.
  • the drive unit 100 further has a gear 50 with an output shaft 60 which can be driven by the drive shaft 15.
  • the drive shaft 15 of the drive motor 10 and the output shaft 60 of the transmission 50 are preferably arranged at a predetermined angle to each other, preferably as shown in the embodiment perpendicular to each other.
  • the output shaft 60 of the transmission 50 is assigned at least one angular position sensor 80, preferably exactly one angular position sensor 80, for determining a respective angular position of the output shaft 60.
  • the angular position sensor 80 is preferably designed as an absolute angle sensor.
  • the transmission 50 preferably has a gear housing 55, in which the drive shaft 15 of the drive motor 10 and the output shaft 60 of the transmission 50 are at least partially arranged at the predetermined angle to each other, wherein in the embodiment, the preferred rectangular arrangement of drive shaft 15 and output shaft 60 shown is.
  • a bearing bush 51 is preferably introduced, in which the output shaft 60 is rotatably mounted, wherein the bearing bush 51 is preferably fixed with a snap ring 53 in the gear housing 55.
  • the angular position sensor 80 is at least partially disposed on the gear 70.
  • the angular position sensor 80 preferably has a signal transmitter 72 and a signal receiver 52 operatively connected to the signal receiver 52, wherein the signal transmitter 72 is arranged on the gear 70.
  • the signal generator 72 is formed as a magnet 73, which is preferably arranged approximately centrally in the middle of the gear 70.
  • the position shown in FIG. 1 serves only to illustrate the possible use of a magnetic signal transmitter 73, but not to determine a specific position on the gear 70, which is preferably centric as described above.
  • the signal generator 72 may be formed, for example, as an optical signal generator 74. The with this signal generator 72 in operative connection standing signal receiver 52 is arranged for example in the transmission housing 55.
  • the transmission housing 55 preferably has a cover 90 into which an evaluation electronics 92 and a control unit 94 are integrated. Alternatively, only the transmitter 92 or only the controller 94 may be integrated into the lid 90. Furthermore, it is possible to arrange the signal receiver 52 in the cover 90 of the transmission housing 55.
  • the drive shaft 15 and the output shaft 60 are connected to each other via a worm gear, wherein the drive shaft 15 is formed by way of example as a worm shaft which engages in the example designed as a gear gear 70 of the output shaft 60.
  • a worm gear is preferred due to a possible speed ratio and current production costs.
  • the electronically commutated drive motor 10 is energized and thus brings the drive shaft 15 to rotate. About trained in the manner of a worm gear 50, the rotation of the drive shaft 15 is transmitted to the output shaft 60.
  • an angular position of the output shaft 15 can be determined by the angular position sensor 80 via the signal generator 72 and the signal receiver 52, which generate a signal for the control unit 94 by the evaluation electronics 92.
  • a drive shaft angle position of the drive shaft 15 of the drive motor 10 can be determined in a second step.
  • a commutation of the drive motor 10 can be controlled by the controller 94.
  • a respective optimal commutation time is programmed for the respective electronically commutated drive motor 10 and a position of the rotor 20 relative to a respective absolute angle on the output shaft 60 is specified.
  • the current position of the absolute angle sensor 80 is determined on the gear 70 and stored and made a reference to the optimal commutation of the drive motor 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Unité d'entraînement (100) pour un système d'essuie-glace, qui comporte un moteur d'entraînement (10) à commutation électronique pourvu d'un arbre d'entraînement (15), et une transmission (50) pourvue d'un arbre de sortie (60) pouvant être entraîné par l'arbre d'entraînement (15). Selon l'invention, au moins un capteur de position angulaire (80) est associé à l'arbre de sortie (60) de la transmission (50), pour déterminer la position angulaire de l'arbre de sortie (60).
EP16701175.8A 2015-02-05 2016-01-22 Unité d'entraînement pour un système d'essuie-glace Withdrawn EP3254363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015202031.2A DE102015202031A1 (de) 2015-02-05 2015-02-05 Antriebseinheit für ein Wischersystem
PCT/EP2016/051290 WO2016124416A1 (fr) 2015-02-05 2016-01-22 Unité d'entraînement pour un système d'essuie-glace

Publications (1)

Publication Number Publication Date
EP3254363A1 true EP3254363A1 (fr) 2017-12-13

Family

ID=55182341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16701175.8A Withdrawn EP3254363A1 (fr) 2015-02-05 2016-01-22 Unité d'entraînement pour un système d'essuie-glace

Country Status (4)

Country Link
EP (1) EP3254363A1 (fr)
CN (1) CN107206969B (fr)
DE (1) DE102015202031A1 (fr)
WO (1) WO2016124416A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016217710A1 (de) 2016-09-16 2018-03-22 Robert Bosch Gmbh Gehäuse für eine Antriebseinrichtung und Anordnung mit einem Gehäuse
DE102016218649A1 (de) 2016-09-28 2018-03-29 Robert Bosch Gmbh Antriebsvorrichtung für eine Fahrzeugkomponente
DE102019113549A1 (de) * 2019-05-21 2020-11-26 Valeo Systèmes d'Essuyage Verfahren zur Erfassung der Drehwinkelpositionen von drehenden Teilen eines Scheibenwischermotors und Scheibenwischermotor
DE102020206966A1 (de) 2020-06-04 2021-12-09 Robert Bosch Gesellschaft mit beschränkter Haftung Wischervorrichtung und Getrieberadeinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936091A2 (fr) * 2006-12-22 2008-06-25 GEZE GmbH Actionnement de porte ou de fenêtre
DE102012211464A1 (de) * 2012-07-03 2014-01-09 Robert Bosch Gmbh Automatische Identifizierung eines elektronisch kommutierten Motors
JP2014014238A (ja) * 2012-07-04 2014-01-23 Asmo Co Ltd モータアクチュエータ

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130065C2 (de) * 1991-09-11 1993-12-02 Licentia Gmbh Elektrischer Scheibenwischerantrieb
DE4138194C2 (de) * 1991-11-18 2000-06-29 Brose Fahrzeugteile Verfahren und Vorrichtung zur Erfassung der Position und Bewegungsrichtung translatorisch und/oder rotatorisch bewegter Aggregate
DE10258036B4 (de) * 2002-12-12 2024-06-06 Robert Bosch Gmbh Elektromotor, insbesondere für eine Scheibenwischvorrichtung sowie Scheibenwischvorrichtung, insbesondere für ein Kraftfahrzeug
DE10313226A1 (de) * 2003-03-25 2004-10-07 Robert Bosch Gmbh Elektrische Antriebseinheit
DE102005038050B4 (de) * 2005-08-10 2009-09-24 Küster Automotive Door Systems GmbH Elektromotorisch betriebene Antriebseinheit für Kraftfahrzeuge
DE102005040646A1 (de) * 2005-08-27 2007-03-01 Valeo Systèmes d`Essuyage Elektromotorischer Hilfsantrieb für Fahrzeuge
JP5022932B2 (ja) * 2008-02-04 2012-09-12 株式会社ミツバ 電動モータ
JP4997152B2 (ja) * 2008-03-14 2012-08-08 株式会社ミツバ 電動モータおよびその製造方法
DE102009047209A1 (de) 2009-11-25 2011-05-26 Robert Bosch Gmbh Antriebseinheit und Scheibenwischerantrieb mit einer Antriebseinheit
DE102009055396A1 (de) * 2009-12-30 2011-07-07 Robert Bosch GmbH, 70469 Elektrischer Antrieb mit Schneckengetriebe
JP5595100B2 (ja) * 2010-04-26 2014-09-24 株式会社ミツバ モータ装置
DE102010064151A1 (de) 2010-12-27 2012-06-28 Robert Bosch Gmbh Wischermotor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936091A2 (fr) * 2006-12-22 2008-06-25 GEZE GmbH Actionnement de porte ou de fenêtre
DE102012211464A1 (de) * 2012-07-03 2014-01-09 Robert Bosch Gmbh Automatische Identifizierung eines elektronisch kommutierten Motors
JP2014014238A (ja) * 2012-07-04 2014-01-23 Asmo Co Ltd モータアクチュエータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016124416A1 *

Also Published As

Publication number Publication date
DE102015202031A1 (de) 2016-08-11
CN107206969A (zh) 2017-09-26
WO2016124416A1 (fr) 2016-08-11
CN107206969B (zh) 2020-03-17

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