WO2009141245A1 - Module lave-glace pour véhicules et moteur d'essuie-glace destiné à être utilisé avec un module d'essuie-glace et de lave-glace - Google Patents

Module lave-glace pour véhicules et moteur d'essuie-glace destiné à être utilisé avec un module d'essuie-glace et de lave-glace Download PDF

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Publication number
WO2009141245A1
WO2009141245A1 PCT/EP2009/055706 EP2009055706W WO2009141245A1 WO 2009141245 A1 WO2009141245 A1 WO 2009141245A1 EP 2009055706 W EP2009055706 W EP 2009055706W WO 2009141245 A1 WO2009141245 A1 WO 2009141245A1
Authority
WO
WIPO (PCT)
Prior art keywords
permanent magnet
wiper
magnet arrangement
angle
wiper motor
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.)
Ceased
Application number
PCT/EP2009/055706
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English (en)
Inventor
Ralf Beuchle
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.)
Valeo Systemes dEssuyage SAS
Original Assignee
Valeo Systemes dEssuyage SAS
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 Valeo Systemes dEssuyage SAS filed Critical Valeo Systemes dEssuyage SAS
Publication of WO2009141245A1 publication Critical patent/WO2009141245A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60S1/46—Cleaning windscreens, windows or optical devices using liquid; Windscreen washers
    • B60S1/48—Liquid supply therefor
    • B60S1/481—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means
    • B60S1/482—Liquid supply therefor the operation of at least part of the liquid supply being controlled by electric means combined with the operation of windscreen wipers

Definitions

  • Windscreen washer module for vehicles and wiper motor for use with a windscreen wiper and washer module
  • the invention concern a windscreen washer module for vehicles according to the generic term of patent claim 1 and a wiper motor according to the generic term of patent claim 18.
  • Windscreen washer modules for vehicles and specifically in this case for road vehicles and private cars are known in various embodiments and fundamentally consist of a supply unit, which in the activated state, provides the cleaning and washing fluid (water with cleaning and/or antifreeze additives, if appropriate) to be emitted by at least one washer jet onto the vehicle screen, for example the vehicle front windscreen, at the necessary volume flow and pressure.
  • the supply unit generally consists in this case of a container or tank to receive the washing and cleaning fluid and of at least one electrically driven pump (washer pump), the outlet of which is connected via at least one supply line to the at least one washer jet for emission of the washing and cleaning fluid on to the vehicle screen.
  • the windscreen washer module and the supply unit are generally activated and deactivated by switching the pump motor on and off.
  • supply units with several outlets, for example with two outlets, which are individually controllable, so that depending on different control criteria, emission of the washing and cleaning fluid at different washer jets or groups of washer jets is possible.
  • the at least two outlets are formed in this case of the outlets of a so-called "Bl pump” for example, which on activation of the pump motor for a rotating movement in one direction, supplies the washing and cleaning fluid at one outlet and on activation of the pump motion for an opposite direction of rotation, supplies the washing and cleaning fluid at the other outlet.
  • the purpose of the invention is to demonstrate a windscreen washer module which, with a simplified structural design, allows control as a function of the wiping angle of the supply unit for the washing and cleaning fluid with a high degree of operational safety.
  • Control of the supply unit as a function of the wiping angle is to be taken to mean very generally in the sense of the invention that the supply unit and provision of the washing and cleaning fluid at the at least one outlet of the supply unit and therefore also at the at least one washer jet connected to this outlet occur depending on the position or angular position of the at least one wiper arm of a windscreen wiper module and depending on the rotational position of the wiper motor corresponding to this position.
  • a sensor unit which consists of the permanent magnet arrangement and the at least one sensor element, which responds to the magnetic field of the magnetic pole pairs of the permanent magnet arrangement, a contract-free and wear-free control of the supply unit for provision of the washing and cleaning fluid as a function of the wiping angle and therefore a high level of operational safety is achieved.
  • the at least one sensor element is preferably a Hall sensor, by means of which activation and deactivation of the supply unit is possible owing to the different polarity of the magnetic pole pairs acting in conjunction with the Hall sensor and to be more precise with control electronics that only require an extremely limited number of components and can therefore be realised very cheaply and with a small constructional volume.
  • the embodiment according to the invention makes it possible to easily integrate the components of the sensor unit and the corresponding electronics into wiper motors of already existing design and namely also particularly with simplified assembly, all the more so since a spatial distance is possible between the permanent magnet arrangement provided for example on the motor shaft or the output shaft of the wiper motor or on a wheel arranged on this shaft and the at least one sensor element, for example a Hall sensor, without the functionality of the sensor unit being impaired as a result.
  • the at least one sensor element owing to the polarity of the one magnetic pole pair of the permanent magnet arrangement, causes activation of the supply unit and owing to the opposite polarity of the magnetic pole pair, deactivation of the supply unit.
  • the supply unit By use of at least two sensor elements, it is possible to control the supply unit not only as a function of the wiping angle, i.e. depending on the angular position, but also as a function of the wiping direction, i.e. depending on the direction of movement of the wiper arm and the wiper blade and namely in such a way for example that in both directions of the pivoting movement of the wiper arm and the wiper blade, the washing and cleaning fluid is always applied to the vehicle screen ahead of the wiper blade.
  • FIG. 1 shows a very simplified schematic partial presentation of a windscreen washer module for the front windscreen of a road vehicle, for example a private car, together with a windscreen wiper module for emission of a washing and cleaning fluid as a function of the wiping angle onto the vehicle screen;
  • FIG. 2 shows a cam disc in addition to a corresponding PCB presenting two Hall sensors of control electronics for control as a function of the wiping angle of a BI pump (washer pump) of the windscreen washer module in figure 1 ;
  • FIG. 3 shows a simplified presentation of a block or functional diagram of the control electronics
  • Fig. 4 - 9 shows the position of the cam disc in relation to the PCB of the control electronics and to the Hall sensors in different wiping angle positions;
  • FIG. 10 shows a presentation as in figure 2 with a further embodiment of the invention
  • 1 is a windscreen wiper module for a vehicle front windscreen 2, for a sloped front screen of a private car for example.
  • Elements of this wiper module illustrated include among others the wiper arm 4 and wiper blade pivotable around the axis of a wiper shaft 3 in addition to an electric wiper motor 6 designed as a geared motor, which when the windscreen wiper module is switched on, causes pivoting of the wiper arm 4 between a parked position PP or a turning position WP1 adjacent to the latter and a turning position WP2 and which is connected to the wiper arm for this purpose in the manner of a drive via a crank mechanism.
  • crank mechanism is only schematically implied in figure 1 by the crank 7 provided on the motor shaft or output shaft 6.1 of the wiper motor, by the crank 8 provided on the wiper shaft 3 and by the coupling element 9 connecting the two cranks.
  • the wiper motor 6 is designed for rotary running, i.e. the crank 7 rotates continuously in the direction of the arrow A with the windscreen wiper module 1 switched on and during wiping operation.
  • the windscreen wiper module 1 is furthermore equipped with a windscreen washer module, which namely essentially consists of a tank 10 to receive a washing and cleaning fluid, for example water with cleaning and/or antifreeze additives, if appropriate, and of a pump 11 with an electric motor 11a (figure 3).
  • the tank 10, pump 11 and electric motor 11a together form a supply unit 12 for supply of the washing and cleaning fluid.
  • the pump 11 is designed as a BI pump, i.e. with a pump inlet 11.1 leading to the tank 10 and with two pump outlets 11.2 and 11.3. Changing the direction of rotation of the electric motor 11a controls supply of the washing and cleaning fluid with the necessary volume flow and pressure at either outlet 11.2 or outlet 11.3.
  • the wiper blade 5 is equipped with several washer jets for the washing and cleaning fluid on both its long sides and therefore also on both sides of the conventional wiping lip lying against the vehicle screen 2, which form a group 13 and 14 of washer jets on each long side of the wiper blade.
  • Each group 13 and 14 is connected via at least partially flexible hose lines to a pump outlet 11.2 and 11.3 and namely all washer jets of group 13 to the pump outlet 11.2 and all washer jets of group 14 to the pump outlet 11.3.
  • the electric motor 11a is controlled in the manner described in further detail below synchronously with the rotating movement of the wiper motor 6 as a function of the wiping angle so that with the windscreen wiper module 1 switched on and with the windscreen washer module switched on during the pivoting movement of the wiper arm 4 and therefore the wiper blade 5 from the turning position WP1 in the direction of the turning position WP2 , the washing fluid is emitted onto the vehicle screen 2 exclusively from the washer jets of the group 13 running ahead of this pivoting movement and conversely during the pivoting movement of the wiper arm 4 and therefore the wiper blade 5 from the turning position WP2 to the turning position WP1 or to the parked position PP, exclusively from the washer jets of the group 14 running ahead of this movement.
  • a cam disc 16 is provided on the output shaft 6.1 of the wiper motor 6 for this control as a function of the wiping angle of the electric motor 11a and therefore the pump 11 , on which (cam disc) in the embodiment presented two permanent magnets 17 and 18 are arranged offset by an first degree of angle, for example by an angle of 90° or at approximately 90° in relation to one another and namely in the embodiment presented in such a way that the connecting line between the poles N and S (north pole and south pole) of each permanent magnet 17 and 18 is oriented approximately parallel to the tangent on the circumference of the disc-shaped cam disc 16, i.e.
  • the magnetic field lines also run between the respective pole pair S/N on at least one side of the cam disc 16 in the direction of the circumference of this cam disc.
  • the two permanent magnets 17 and 18 have reverse polarity on the cam disc 16 and indeed in such a way that in the embodiment presented, the north pole N of the permanent magnet 17 runs ahead of the corresponding south pole S in an assumed circumferential direction of the cam disc 16, for example in the direction of rotation A, whereas in case of the permanent magnet 18 the south pole S runs ahead of the north pole N in the assumed circumferential direction.
  • the cam disc 16 is for example an additional cam disc arranged on the output shaft 6.1 of the wiper motor 6 and rotating with this output shaft or a gear wheel arranged on the output shaft 6.1 is preferably used as the cam disc, for example the worm wheel of a worm gear of the wiper motor 6 acting in conjunction with a worm on the armature shaft of the electric motor.
  • Two Hall sensors 20 and 21 are allocated to the two permanent magnets 17 and 18, which (Hall sensors) in the embodiment presented are provided offset in relation to one another by a second degree of angle which is larger than the first degree of angle and corresponds to approximately twice the first degree of angle, i.e. by approximately 180° around the axis of the output shaft 6.1 and of the cam disc 16 and namely in the same radial distance from this axis as that of the two permanent magnets 17 and 18.
  • the Hall sensors 20 and 21 are designed for example as bistable sensors or a sensor element such that they are controllable between an activated and deactivated status by applying a magnetic field of different polarity and the respective status is maintained until further triggering.
  • the electric motor 11a which is connectable by its two connections 11a.1 and 11a.2 via two relays 22 and 23 either to the switching earth (negative pole) of the vehicle on-board power supply or to a connection 24 connected to the positive pole of the vehicle on-board power supply.
  • the two relays 22 and 23 are designed in such a way in the embodiment presented that each relay contact connected to the motor connection 11a.1 and 11 a.2 is connected in the neutral status with the vehicle earth.
  • the relays 22 and 23 are each triggered respectively via the output of a driving stage 25 designed as an integrated switching circuit, the inputs of which (driving stage) are respectively connected to one of the two Hall sensors 20 and 21.
  • the relay 22 On activation of the Hall sensor 20, the relay 22 is activated via the driving stage 25 and thereby the motor connection 11a.1 is connected to the positive pole of the supply network and to be more precise for a direction of rotation of the motor 11a therefore of the pump 11 in such a way that the pump 11 supplies the washing and cleaning fluid at its outlet 11.2.
  • the relay 23 On activation of the Hall sensor 21 , the relay 23 is activated via the driving stage, so that the connection 11a.2 is subsequently connected to the positive pole of the on-board power supply and consequently the pump 11 is driven by the motor 11a in a direction of rotation for supply of the washing fluid at the pump outlet 11.3.
  • Figures 4 - 9 show the interaction of the permanent magnets 17 and 18 with the Hall sensors 20 and 21 and the control of switching on and off of the motor 11a and the pump 11 thereby achieved, in addition to control of the direction of rotation of the motor 11 a and the driven pump 11.
  • both Hall sensors 20 and 21 are arranged outside the effective area of the permanent magnets 17 and 18 and are inactive.
  • the pump 11 is not driven by the electric motor 11a. This status is illustrated in figure 4.
  • the output shaft 6.1 and the crank 7 are in their initial position.
  • the Hall sensor 20 arrives in the range of action of the permanent magnet 18, which has opposite polarity to the permanent magnet 17 and which consequently causes deactivation of the Hall sensor 20 and thereby deactivation of the relay 22 and switching off of the motor 11a.
  • This status which lies approximately in the middle of the wiping field formed between the turning positions WP1 and WP2, is illustrated in figure 6.
  • a particular advantage of the windscreen wiper module 1 and the windscreen washer module lies among other aspects in optimum washer pump control as a function of the wiping angle in such a way that the washing and cleaning fluid is applied to the vehicle screen 2 in each case ahead of the wiping movement of the wiper blade 5.
  • a considerable advantage also lies in the fact that control is performed on a contact-free basis by means of the permanent magnets 17 and 18 and the Hall sensors 20 and 21 ; sliding contacts susceptible to faults and subject to wear, corresponding contact segments etc. on the cam disc 16 and other mechanical contacts are avoided.
  • the embodiment according to the invention furthermore have the advantage that the sensor unit consisting of the permanent magnets 17 and 18 and of the Hall sensors 20 and 21 , including the electronics 15 can be integrated without difficulty in already developed wiper motors.
  • the entire control system is also extremely economical to produce, since it only consists of a few components, that is to say, the two Hall sensors 20 and 21 , the driving stage 25, the two relays 22 and 23 and if appropriate also interference suppression and protection components. Furthermore, in particular installation of the PCB 19 bearing the Hall sensors and the electronics 15 in the housing of the wiper motor 6, for example in the gear housing or gear cover of this motor is unproblematic, all the more so since the distance between the Hall sensors 20 and 21 and the permanent magnets 17 and 18 may be several millimetres wide with perfect control.
  • a cam disc 16 with the two permanent magnets 17 and 18 is provided on the output shaft 6.1 , wherein the cam disc 16 is preferably formed by the gear wheel of the worm gear of the wiper motor 6.
  • An embodiment is presented in figure 10 in which, on the output shaft 6.1 of the wiper motor 6, a two-pole round magnet 27 is arranged adjacent to the gear wheel 26 at this position, which (magnet) forms a south pole S on a smaller section of its ring segment and a north pole N on the larger section of its ring segment, so that two magnetic gaps or pole pairs between magnetic field lines running between a north pole and a south pole are retained.
  • the magnetic gaps 28 and 29 correspond in their function to the pole pairs of the permanent magnets 17 and 18 and are also offset in relation to one another by the same angular interval as that which the permanent magnets 17 and 18 present in relation to one another.
  • the two-pole round magnet 27 and its magnetic gaps 28 and 29 interact in the same manner as described for the permanent magnets 17 and 18 with the Hall sensors 20 and 21 for control of the washer pump 11 as a function of the wiping angle.
  • the washer jets for emission of the washing and cleaning fluid are provided on the wiper blade 5 and on the latter's long sides.
  • Other embodiments are of course possible, in which for the wiper arm 4 presents these washer jets for example.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention porte sur un module lave-glace pour véhicules, doté d'une unité d'alimentation (12) pour l'alimentation en fluide de lavage et de nettoyage devant être délivré sur un pare-brise de véhicule (2), et doté d'une unité de capteur (17, 18, 27, 20, 21) pour l'acquisition de la position respective ou de la position angulaire d'au moins un bras d'essuie-glace (4) ou d'un arbre, relié au bras d'essuie-glace (4) à la manière d'un entraînement, d'un module essuie-glace (1) pour la commande de l'unité d'alimentation en fonction de l'angle d'essuyage.
PCT/EP2009/055706 2008-05-20 2009-05-12 Module lave-glace pour véhicules et moteur d'essuie-glace destiné à être utilisé avec un module d'essuie-glace et de lave-glace Ceased WO2009141245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008024346A DE102008024346A1 (de) 2008-05-20 2008-05-20 Scheibenwaschanlage für Fahrzeuge sowie Wischermotor zur Verwendung bei einer Scheibenwisch- und waschanlage
DE102008024346.9 2008-05-20

Publications (1)

Publication Number Publication Date
WO2009141245A1 true WO2009141245A1 (fr) 2009-11-26

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PCT/EP2009/055706 Ceased WO2009141245A1 (fr) 2008-05-20 2009-05-12 Module lave-glace pour véhicules et moteur d'essuie-glace destiné à être utilisé avec un module d'essuie-glace et de lave-glace

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DE (1) DE102008024346A1 (fr)
WO (1) WO2009141245A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104118399A (zh) * 2014-07-29 2014-10-29 高翔 一种嵌入式车辆打蜡抛光机
CN104973019A (zh) * 2015-08-05 2015-10-14 浙江三凯机电有限公司 一种电动雨刷器
WO2016102263A1 (fr) * 2014-12-23 2016-06-30 Valeo Systèmes d'Essuyage Moteur d'essuie-glace et appareil d'essuyage pour essuyer la vitre d'un véhicule
JP2016132381A (ja) * 2015-01-20 2016-07-25 本田技研工業株式会社 ウォッシャ噴射装置
WO2020001316A1 (fr) * 2018-06-28 2020-01-02 Changshu Valeo Automotive Wiper Systems Co., Ltd Système d'essuie-glace et véhicule automobile comprenant le système d'essuie-glace
CN117068103A (zh) * 2023-09-23 2023-11-17 重庆赛力斯新能源汽车设计院有限公司 雨刮喷水控制方法、装置、设备及计算机可读存储介质

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010054687A1 (de) * 2010-12-16 2012-06-21 GM Global Technology Operations LLC Scheibenwisch- und Wascheinrichtung für Kraftfahrzeuge
NL2026336B1 (en) * 2020-08-25 2022-04-29 Mci Mirror Controls Int Netherlands B V Modular cleaning system for cleaning a sensor window of an optical sensing device of a motor vehicle

Citations (4)

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DE4116099A1 (de) * 1991-05-17 1992-11-19 Swf Auto Electric Gmbh Wisch- und waschanlage, insbesondere fuer scheiben an kraftfahrzeugen
JPH05286417A (ja) * 1992-04-07 1993-11-02 Nissan Motor Co Ltd ワイパー装置
US5789917A (en) * 1990-12-05 1998-08-04 Moving Magnet Technologie Sa Magnetic position sensor with hall probe formed in an air gap of a stator
US20080083081A1 (en) * 2006-10-10 2008-04-10 Rhodes Robert V Wiper assembly for sweeping a glass surface on a vehicle

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DE19639801A1 (de) * 1996-09-27 1998-04-02 Bosch Gmbh Robert Sensoranordnung zur Positionserfassung von bewegbaren Teilen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789917A (en) * 1990-12-05 1998-08-04 Moving Magnet Technologie Sa Magnetic position sensor with hall probe formed in an air gap of a stator
DE4116099A1 (de) * 1991-05-17 1992-11-19 Swf Auto Electric Gmbh Wisch- und waschanlage, insbesondere fuer scheiben an kraftfahrzeugen
JPH05286417A (ja) * 1992-04-07 1993-11-02 Nissan Motor Co Ltd ワイパー装置
US20080083081A1 (en) * 2006-10-10 2008-04-10 Rhodes Robert V Wiper assembly for sweeping a glass surface on a vehicle

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104118399A (zh) * 2014-07-29 2014-10-29 高翔 一种嵌入式车辆打蜡抛光机
WO2016102263A1 (fr) * 2014-12-23 2016-06-30 Valeo Systèmes d'Essuyage Moteur d'essuie-glace et appareil d'essuyage pour essuyer la vitre d'un véhicule
CN107107871A (zh) * 2014-12-23 2017-08-29 法雷奥系统公司 擦拭器马达和用于擦拭车辆窗口的擦拭装置
JP2018500236A (ja) * 2014-12-23 2018-01-11 ヴァレオ システム デシュヤージュＶａｌｅｏ Ｓｙｓｔｅｍｅｓ Ｄ’Ｅｓｓｕｙａｇｅ ワイパーモータおよび車両の窓を拭くワイパー装置
US10882494B2 (en) 2014-12-23 2021-01-05 Valeo Systèmes d'Essuyage Wiper motor and wiping apparatus for wiping a vehicle window
JP2016132381A (ja) * 2015-01-20 2016-07-25 本田技研工業株式会社 ウォッシャ噴射装置
CN104973019A (zh) * 2015-08-05 2015-10-14 浙江三凯机电有限公司 一种电动雨刷器
WO2020001316A1 (fr) * 2018-06-28 2020-01-02 Changshu Valeo Automotive Wiper Systems Co., Ltd Système d'essuie-glace et véhicule automobile comprenant le système d'essuie-glace
CN117068103A (zh) * 2023-09-23 2023-11-17 重庆赛力斯新能源汽车设计院有限公司 雨刮喷水控制方法、装置、设备及计算机可读存储介质

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