WO2019148361A1 - Système d'essuie-glace et véhicule à moteur comprenant le système d'essuie-glace - Google Patents

Système d'essuie-glace et véhicule à moteur comprenant le système d'essuie-glace Download PDF

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Publication number
WO2019148361A1
WO2019148361A1 PCT/CN2018/074705 CN2018074705W WO2019148361A1 WO 2019148361 A1 WO2019148361 A1 WO 2019148361A1 CN 2018074705 W CN2018074705 W CN 2018074705W WO 2019148361 A1 WO2019148361 A1 WO 2019148361A1
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WO
WIPO (PCT)
Prior art keywords
washer
wiper
windscreen
wiper means
switch module
Prior art date
Application number
PCT/CN2018/074705
Other languages
English (en)
Inventor
Yiwen XING
Denis Grandjean
Raphael Meneguz
Masato Oshima
Original Assignee
Changshu Valeo Automotive Wiper Systems Co. , Ltd.
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 Changshu Valeo Automotive Wiper Systems Co. , Ltd. filed Critical Changshu Valeo Automotive Wiper Systems Co. , Ltd.
Priority to CN201880085861.0A priority Critical patent/CN111770860B/zh
Priority to PCT/CN2018/074705 priority patent/WO2019148361A1/fr
Publication of WO2019148361A1 publication Critical patent/WO2019148361A1/fr

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    • 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
    • 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

  • the present disclosure relates to a wiper system, more particularly to a wiper system comprising a first washer system and a second washer system controlled by a bidirectional pump and allow the first washer system and the second washer system be controlled separately.
  • a washer system is normally incorporated in a wiper system in a vehicle such as a motor vehicle.
  • a wiper system includes a wiper means for wiping the windscreen of the vehicles such as a front windscreen and a rear windscreen with washing liquid sprayed thereon by a washer system, wherein the wiper means generally includes two wiper arms each having a wiper blade in sliding contact with the windscreen.
  • washing liquid continuously spraying on the windscreen of the vehicle during reciprocating movement of the wiper arm, it may strike on the wiper means and scatter over a wide area of window, which may result in economy penalty of the washing liquid and may have a negative effect for the clear view of the driver.
  • a wiper system may further includes a washer switch module to open or close depending on the angular position of the wiper means to cooperate the activation of the pump for the washer system with the reciprocating movement of the wiper means.
  • the object of the present disclosure is to provide a wiper system which is cost efficiency and the components of which cooperate well.
  • a wiper system for a motor vehicle comprises at least one wiper means configured to wipe at least one windscreen of the motor vehicle, a first washer system and a second washer system configured to spray washing liquid to the at least one windscreen, a bidirectional pump configured to pump washing liquid to the first washer system upon acting in a first direction and to the second washer system upon acting in a second direction, a washer power module configured to selectively apply a positive voltage or a negative voltage to the bidirectional pump so that the bidirectional pump act in the first direction or in the second direction respectively, a washer switch module connected in series with the washer power module and the bidirectional pump and configured to open or close depending on the angular position of one of the at least one wiper means, and a unidirectional unit connected in parallel with the washer switch module and configured to open when the washer switch applies one of the positive voltage and the negative voltage and to close so that the washer switch module is bypassed when the washer switch applies the other of the positive voltage and the negative voltage.
  • the bidirectional pump is used to deliver washing liquid from a reservoir to the first washer system when the pump act in one direction and to a second washer system when the pump act in the other direction.
  • the advantages of use the bidirectional pump are the reduced cost of the wiper system is reduced and the reduced complexity of the wiper system.
  • the present disclosure it is possible to control the first washer system and the second washer system separately due to the unidirectional unit.
  • the washer switch module control the first washer system without controlling the second washer system.
  • the unidirectional unit may include a diode.
  • the advantages of use of the diode are that the wiper system is more simple and cost efficiency.
  • the washer switch module may include a first part configured to rotate with the rotation of a wiper motor driving the one of the at least one wiper means and a second part which is stationary, and the first part and the second part are configured to cooperate with each other so that allow the washer switch module open or a close depending on the angular position of the one of the at least wiper means.
  • the advantages of use of the first part and the second part are that the washer switch module may close or open depending on the angular position of one of the at least one wiper means more accurately and in real time.
  • the first part may be a cam mounted on a wheel configured to rotate with the rotation of a wiper motor driving the one of the at least one wiper means and the second part is a pair of stationary contacts, and the cam may include a conductive track able to electrically connect or disconnect the pair of stationary contacts so as to allow the washer switch module open or close depending on the angular position of the one of the at least one wiper means.
  • the advantages of use of the cam and the contact are that the washer switch module may have a simpler structure and lower cost.
  • the cam may further include a second conductive track for controlling the one of the at least one wiper means.
  • the advantages of having the second conductive are that movement of the one of the at least one wiper means may be linked with the spraying of the first washer system as needed.
  • the at least one wiper means may include a first wiper means and a second wiper means.
  • the at least one windscreen may include a first windscreen and a second windscreen.
  • the first wiper means may be configured to wipe the first windscreen with the washing liquid sprayed from the first washing system and the second wiper means is configured to wipe the second windscreen with the washing liquid sprayed from the second washing system.
  • the first windscreen may be a front windscreen of the motor vehicle and the second windscreen may be a rear windscreen of the motor vehicle.
  • both the first washer system used to spray washing liquid on the front windscreen and a second washer system used to spray washing liquid on the rear windscreen may be pumped by the bidirectional pump and it is possible to control the first washer system and the second washer system separately.
  • the washer power module may apply the positive voltage or the negative voltage in response to a signal received from a control module of the motor vehicle.
  • a motor vehicle comprising the wiper system set forth above is also provided.
  • Fig. 1 is a schematic view showing a conventional wiper system of a vehicle
  • Fig. 2 is a schematic view showing the wiper system according to an embodiment of the present disclosure
  • Fig. 3 is a schematic view showing the washer switch module according to another embodiment of the present disclosure.
  • Fig. 4 is a schematic view showing the washer switch module according to still another embodiment of the present disclosure.
  • the system 1 comprises a wiper means 11 having two wiper arms each provided with a wiper blade at its free end for wiping the windscreen 12 of the vehicles, a wiper motor (not shown) configured to drive the wiper means via a linkage unit (not shown) converting the rotation movement of the wiper motor into the reciprocating movement of the wiper arms, a washer system (not shown) configured to spray washing liquid on the windscreen 12 of the vehicles, a pump 13 connected to a reservoir of washing liquid and configured to supply washing liquid to the washer means, a wiper switch 14 configured to control the power supply of the pump 13, a washer power module 15 configured to control the power supply of the washer system, and a control module such as a body control module (BCM) 16 configured to control the wiper switch 14 and the washer power module 15 for example according to the command from the users and the signals received from various sensors.
  • BCM body control module
  • the wiper motor may include a high-speed terminal (HS) to deliver a high-speed current for a high-speed wiping and a low-speed terminal (LS) to deliver a low-speed current for a low-speed wiping, a ground (GND) terminal connected to the ground and a park terminal to bring rotation of the wiper motor stop.
  • HS high-speed terminal
  • LS low-speed terminal
  • GND ground terminal
  • the wiper means 11 may further include a front wiper means for the front windscreen and a rear wiper means for the rear windscreen.
  • the wiper motor may include a front wiper motor to drive the front wiper means and the rear wiper motor to drive the rear wiper means.
  • the washer system may include a front washer system and a rear washer system, each including a pipe and a nozzle connected to the pump 13 via the pipe and able to deliver a jet of washing liquid on the front windscreen and the rear windscreen.
  • the washer power module 15 may apply a positive voltage or a negative voltage to the pump 13 in response to a signal received from BCM of the motor vehicle.
  • the pump 13 may be a bidirectional pump which is able to act in two directions, for example, to rotate in two directions.
  • the pump 13 when the pump 13 is supplied with the positive voltage through the washer power module 15, it rotates in a first direction so that the rear washer system sprays washing liquid and when the pump 13 is supplied with the negative voltage through the washer power module 15, it rotates in a second direction opposite to the first direction so that the front washer system sprays washing liquid.
  • a wiper system 1 may further include a washer switch module 17 shown in Fig. 2 connected in series with the wiper switch 14 and the pump 13.
  • the washer switch module 17 includes a cam mounted on a wheel configured to rotate with the rotation of a wiper motor driving the wiper means 11 and two stationary contacts 172, 173 such us spring contacts, fixed to face the cam on the wiper motor and connected to the two terminals of the pump 13 respectively.
  • one stationary contact 172 connects to one terminal of the pump 13 and the other stationary contact 173 connects to the other terminal of the pump 13 through the washer power module 15.
  • the wheel may be in concentric rotation with a output shaft of the wiper motor which drives the reciprocating movement of the wiper means 11, and thus the angular position of the wheel corresponds to the angular position of the wiper means 11 since the angular position of the wiper means 11 is a function of an the angular position of wiper motor.
  • the cam has a conductive track 171 in concentric to the wheel which is able to connection or disconnect the two stationary contacts 172, 173 depending on the angular position of the wiper means 11 so as to allow the washer switch module 17 open or close depending on the angular position of the wiper means 11.
  • the washer switch module 17 may manage the spray of the washing liquid on the windscreen 12 accurately depending on the angular position of the wiper means 11.
  • both the front washer system for the front windscreen and the rear washer system for the rear windscreen are controlled by a washer switch module 17 configured to open or close depending on the angular position of one wiper means, which is not desirable.
  • the one wiper means is the front wiper means
  • both the front washer system and the rear washer system are controlled depending on the angular position of the front wiper means, and it is not desirable to control the rear washer system according to the angular position of the front wiper means.
  • Fig. 2-Fig. 4 illustrate the embodiments of the present disclosure. Like reference numerals refer to like elements as described above, and descriptions thereof will be omitted.
  • the wiper system 2 comprises a front wiper means 111 and a second wiper means (not shown) for wiping a front wiper windscreen 121 and a rear windscreen (not shown) of the motor vehicles respectively, a front wiper motor (not shown) and a rear wiper motor (not shown) configured to drive the front wiper means 111 and the rear wiper means respectively, a front washer system (not shown) and a rear washer system (not shown) configured to spray washing liquid on the front windscreen 121 and the rear windscreen respectively, a bidirectional pump 13 configured to pump the washing liquid from a reservoir to the rear washer system when it rotates in a first direction and to pump the washing liquid to the front washer system when it rotates in a second direction, a wiper switch 14 configured to control the power supply of the front wiper means 111 and the second wiper means, a washer power module 15 configured to control the power supply of the pump 13, especially the electrical polarity of
  • the washer power module 15 applies a positive voltage or a negative voltage to the pump 13 in response to the signal received from the BCM 16.
  • the washer power module 15 applies the positive voltage to the pump 13, the pump 13 rotates in the first direction.
  • washer power module 15 applies the negative voltage to the pump 13, the pump 13 rotates in the second direction.
  • the washer switch module 17 includes a cam mounted on a wheel rotating with the rotation of the front wiper motor and two stationary contacts 172, 173 connected to the two terminals of the pump 13 respectively.
  • the cam has a conductive track 171 in concentric to the wheel which is able to electrically connect or disconnect between the two stationary contacts 172, 173 depending on the angular position of the front wiper means 111 so as to allow the washer switch module 17 open or close depending on the angular position of the front wiper means 111.
  • the wiper system 2 further includes a diode 18 connected in parallel with the washer switch module 17.
  • the diode 18 allows a positive current flow from its positive terminal to its negative terminal and impedes the negative current to flow from its negative terminal to its positive terminal.
  • the diode 18 is configured to act as an open circuit when the washer power module 15 applies the positive voltage and act as a close circuit when the washer power module 15 applies the negative voltage.
  • the diode 18 In the case where the negative voltage is applied to the pump 13 through the washer power module 15, the diode 18 has very high resistance so that the diode 18 acts as an open circuit and is unable to bypass the washer switch module 17. In this case, the turn on/off of the pump 13 is controlled by the washer switch module 17.
  • the conductive track 171 of the cam make a connection between the two stationary contacts 172, 173 in a certain angular position, a negative current are generated and cause the pump 13 to rotate in the second direction which leads to the spraying of the front washer system on the front windscreen 121.
  • the wiper system 2 works as follows.
  • the control module such as BCM 16 sends a command signal to the washer power module 15 which leads to the washer power module 15 apply a positive voltage to the pump 13.
  • the pump 13 rotates continuously in the second direction regardless of the state of the washer switch module 17 due to the bypass of the diode 18.
  • the rear washer system continuously sprays on the rear windscreen regardless of the angular position of the front wiper means 111.
  • the control module such as BCM 16 sends another command signal to the washer power module 15 which leads to the washer power module 15 to apply a negative voltage to the pump 13.
  • the diode 18 acts as an open circuit.
  • the pump 13 rotates according to the control by the washer switch module 17.
  • the front washer system sprays on the front wiper windscreen 121 depending on the angular position of the front wiper means 111.
  • the washer switch module 17 may include a crank of a linkage for converting the rotary movement of an output shaft of the wiper motor into reciprocating wiping movement of the wiper arms, and a means for detecting the passage of the crank at predefined angular position around the output shaft.
  • the washer switch module 17 is configured to act as a close circuit when detecting the crank passing the first predefined angular position and to act as an open circuit when detecting the crank passing the second predefined position subsequently.
  • the means for detecting the passage of the crank may be sensors such as proximity sensors cooperating with a metal element of the crank.
  • the component to bypass the washer switch module 17 may be a unidirectional circuit in other form than a diode, as long as the unidirectional unit open for one of a positive voltage and a negative voltage and close for the other of the positive voltage and a negative voltage.
  • the unidirectional unit 18 may include a plurality of triodes or the unidirectional unit 18 may include other kinds of unidirectional controlling circuit.
  • the front washer system and the rear washer system are not necessary for the present disclosure.
  • the present disclosure may be used with a first washer system and a second washer system, as long as the first washer system and the second washer system are pumped by a bidirectional pump in two different directions respectively.
  • the first washer system is controlled by the washer switch module 17 according to the position of a wiper means and the second washer system is not controlled by the washer switch module 17.
  • both the front windscreen and the rear windscreen are not necessary for the present disclosure. Both the first washer system and the second washer system may be used for the same windscreen.
  • the first washer system may be a washer system for spraying the washing liquid in front of a wiper means when the wiper means are on its upward path
  • the second washer system may be a washer system for spraying the washing liquid in front of the wiper means when the wiper means are on its downward path.
  • the cam of the washer switch module 17 may include additional conductive tracks and additional contacts for controlling the wiper means.
  • the conductive tracks and their respective contacts may be arranged to cooperate to achieve a certain function of the wiper system.
  • Fig. 3 and Fig. 4 show another two embodiments of the washer switch module.
  • the washer switch module 17’s hown in Fig. 3 includes a cam mounted on a wheel rotating correspondingly to the wiper means and two pairs of stationary contacts.
  • the two pairs of stationary contacts include a pair of stationary contacts 172, 173 used for control of the washer system (refered to as “washer contact” herein) and a pair of additional stationary contacts 174, 175 used for control of the wiper means (refered to as “park contact” herein) .
  • the cam has a conductive track 171 (refered to as “washer track” herein) used for the control of the washer system and cooperating with the washer contacts and a conductive track 176 (refered to as “park track” herein) used for the control of the wiper means and cooperating with the park contacts.
  • the washer track is able to make and break an electric connection between the washer contacts 172, 173 depending on the angular position of the wiper means so that allow the washer switch module 17’a ct as an open circuit or an close circuit depending on the angular position of the wiper means.
  • the park track is able to make and break an electric connection between the park contacts 174, 175 depending on the angular position of the wiper means so that allow a parking signal be generated to cause the wiper means to stop and thus to cause the wiper means stop.
  • Fig. 4 shows a different arrangement of the park contacts 174, 175, the park track 176, the washer contacts 172, 173 and the washer track 171 of the washer switch module 17” from that in Fig. 3. It should be understood by the skilled in the art that the arrangement of these components can vary as needed to link the movement of the wiper means and the spraying of the front washer system differently.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Control Of Multiple Motors (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

L'invention concerne un système d'essuie-glace (1), lequel système comprend au moins un moyen formant essuie-glace (12, 121), un premier système de lave-glace et un second système de lave-glace pompés par une pompe bidirectionnelle (13) dans deux directions, respectivement, un module d'alimentation de lave-glace (15) configuré de manière à appliquer de façon sélective une tension positive ou une tension négative à la pompe bidirectionnelle (13) de telle sorte que la pompe bidirectionnelle (13) agit dans la première direction ou dans la seconde direction, respectivement, un module de commutation de lave-glace (17, 17', 17") connecté en série au module d'alimentation de lave-glace (15) et à la pompe bidirectionnelle (13), et configuré de façon à s'ouvrir ou à se fermer en fonction de la position angulaire de l'un du ou des moyens formant essuie-glace (12, 121), et une unité unidirectionnelle (18) connectée en parallèle au module de commutation de lave-glace (17, 17', 17"), et configurée de façon à s'ouvrir quand le module d'alimentation de lave-glace (15) applique l'une parmi la tension positive et la tension négative, et de façon à se fermer de telle sorte que le module de commutation de lave-glace (17, 17', 17") est contourné quand le module d'alimentation de lave-glace (15) applique l'autre de la tension positive et de la tension négative. L'invention concerne également un véhicule à moteur ayant le système d'essuie-glace (1). Le premier système de lave-glace et le second système de lave-glace peuvent être commandés séparément.
PCT/CN2018/074705 2018-01-31 2018-01-31 Système d'essuie-glace et véhicule à moteur comprenant le système d'essuie-glace WO2019148361A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880085861.0A CN111770860B (zh) 2018-01-31 2018-01-31 刮水器系统和包括该刮水器系统的机动车辆
PCT/CN2018/074705 WO2019148361A1 (fr) 2018-01-31 2018-01-31 Système d'essuie-glace et véhicule à moteur comprenant le système d'essuie-glace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/074705 WO2019148361A1 (fr) 2018-01-31 2018-01-31 Système d'essuie-glace et véhicule à moteur comprenant le système d'essuie-glace

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WO2019148361A1 true WO2019148361A1 (fr) 2019-08-08

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4275477A (en) * 1979-12-04 1981-06-30 Nissan Motor Company, Limited Vehicle window glass washing system
DE3743520A1 (de) * 1987-12-22 1989-07-13 Swf Auto Electric Gmbh Elektrischer schalter zur steuerung zweier scheibenreinigungsanlagen eines kraftfahrzeugs
GB2309799A (en) * 1996-02-01 1997-08-06 Automotive Components Dunstabl Controller for reversible electric motor
US5909096A (en) * 1996-02-29 1999-06-01 Valeo Systemes D'essuyage Control system for a vehicle screen wiping apparatus
FR2927295A1 (fr) * 2008-02-12 2009-08-14 Valeo Systemes Dessuyage Systeme d'essuyage pour vehicule automobile avec systeme de lave-vitre integre
CN106536297A (zh) * 2014-07-17 2017-03-22 法雷奥系统公司 用于机动车辆的具有玻璃清洗系统的擦拭器系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015123877A (ja) * 2013-12-26 2015-07-06 アスモ株式会社 ワイパ・ウォッシャ制御装置
JP6643926B2 (ja) * 2016-03-19 2020-02-12 株式会社ミツバ ワイパシステム及びワイパシステム制御方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4275477A (en) * 1979-12-04 1981-06-30 Nissan Motor Company, Limited Vehicle window glass washing system
DE3743520A1 (de) * 1987-12-22 1989-07-13 Swf Auto Electric Gmbh Elektrischer schalter zur steuerung zweier scheibenreinigungsanlagen eines kraftfahrzeugs
GB2309799A (en) * 1996-02-01 1997-08-06 Automotive Components Dunstabl Controller for reversible electric motor
US5909096A (en) * 1996-02-29 1999-06-01 Valeo Systemes D'essuyage Control system for a vehicle screen wiping apparatus
FR2927295A1 (fr) * 2008-02-12 2009-08-14 Valeo Systemes Dessuyage Systeme d'essuyage pour vehicule automobile avec systeme de lave-vitre integre
CN106536297A (zh) * 2014-07-17 2017-03-22 法雷奥系统公司 用于机动车辆的具有玻璃清洗系统的擦拭器系统

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