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EP0397811A1 - Essuie-glace pour vehicules a moteur - Google Patents

Essuie-glace pour vehicules a moteur

Info

Publication number
EP0397811A1
EP0397811A1 EP19890910835 EP89910835A EP0397811A1 EP 0397811 A1 EP0397811 A1 EP 0397811A1 EP 19890910835 EP19890910835 EP 19890910835 EP 89910835 A EP89910835 A EP 89910835A EP 0397811 A1 EP0397811 A1 EP 0397811A1
Authority
EP
European Patent Office
Prior art keywords
wiper
sensor
lever
wiper device
wiping
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Withdrawn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
EP19890910835
Other languages
German (de)
English (en)
Inventor
Gerd Kuehbauch
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 EP0397811A1 publication Critical patent/EP0397811A1/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Withdrawn legal-status Critical Current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
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0814—Wipers or the like, e.g. scrapers characterised by the drive electrically driven using several drive motors; motor synchronisation circuits
    • 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
    • B60S1/04—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
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/185—Means for transmitting drive mechanically with means for stopping or setting the wipers at their limit of movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S318/00—Electricity: motive power systems
    • Y10S318/02—Windshield wiper controls

Definitions

  • the invention relates to a wiper device according to the preamble of the main claim.
  • a wiping device is already known (DE-OS 29 34 879), in which the size of the wiping area swept by the wiper blades on the windshield and its position on the windshield is subject to considerable changes, which the motor vehicle manufacturers and their customers consider are extremely annoying.
  • the reason for this are the fluctuating frictional relationships between the windshield and the wiping element, changing friction speeds of the wiping element on the windshield which, in connection with inertial forces, elasticities and play in the wiping system and tolerances in the body, prevent compliance with the structurally predetermined or optimal wiping field, although the distances between all articulation points of the wiper device cannot be changed from one another during operation.
  • the wiping area should always come as close as possible to the side edge of the window.
  • the wiper device according to the invention with the characterizing features of the main claim has the advantage that the sensor can be placed and / or adjusted so that the return movement of the wiper lever is only initiated when it is located near the left edge of the window. This happens regardless of all influences that try to affect the way to work and the wiping area on the window.
  • FIG. 1 shows a schematic diagram of a pendulum wiper device for windshields of motor vehicles, with two wiper levers which are connected to one another via a gear linkage and are driven by a common drive unit
  • FIG. 2 shows a schematic diagram of a pendulum wiper device with two wiper levers which are driven independently of one another each have their own drive unit and work in synchronism
  • FIG. 3 shows an embodiment of a pendulum wiper device shown in FIG. 2, in which the two wiper levers work in opposite directions.
  • a wiper device shown in FIG. 1 has an electromotive drive unit 10, the output rotation of which takes place on a crank 12 in the direction of arrow 14.
  • a push rod 17 consisting of two parts 15 and 16 is articulated to the crank 12, the end of which is facing away from the drive unit 10 is connected in an articulated manner to a rocker arm 18 which in turn is attached to a pendulum-mounted wiper shaft 20 is attached.
  • a second rocker arm 22 is fixedly connected to the wiper shaft 20, at the free end of which one end of a second push rod 24 is articulated. With the other end of the push rod 24, the free end of a rocker 26 is articulated, the other end of which is firmly connected to a second wiper shaft 28.
  • a wiper lever 30 and 32 is firmly connected to each of the two wiper shafts 20, 28.
  • the wiper lever 30 has a wiper arm 34, at the free end of which a wiper element 36 designed as a wiper blade is articulated.
  • the wiper lever 32 has a wiper arm 38, on the free end of which a wiper blade 40 is also articulated.
  • the two wiper levers 30 and 32 each rest with their wiper blades 36 and 40 on a disk 42 of a motor vehicle, not shown. This pane can be both the windshield and the rear window of a motor vehicle.
  • FIG. 1 the arrangement according to FIG. 1 is drawn as it appears from the interior of the motor vehicle.
  • the wiper lever 30 is therefore on the driver's side, while the wiper lever 32 is responsible for the passenger side.
  • a sensor 44 which is connected to control electronics 48 via a control line 46, is arranged on the disk 42 near the edge 43 of the disk 42 on the driver's side.
  • a second sensor 50 is arranged on the passenger side of the window 42, close to its lower edge 45, which is connected to the control electronics 48 via a control line 52.
  • the sensor 50 is located outside of the wiping blade. 40 swept area of the pane 42, specifically below the wiping field 54, which is swept by the wiper blade 40 at a pendulum angle Q.
  • the pendulum angle of the wiper blade 36 has also been designated C when the wiper device is in operation.
  • the second sensor 50 lies below or outside the wiper field 54 by an amount, which has been designated by the angle in FIG. 1.
  • the wiper field of the wiper blade 36 for the driver's side has been provided with reference number 55 in FIG.
  • an electric drive motor 58 is attached to the first push rod, namely on the part 15, the output shaft 60 of which has a threaded nut 62.
  • the other part 16 of the push rod has a threaded spindle 64 which cooperates with the threaded nut 62.
  • the electric drive motor 58 is connected to the electronic control device 48 via a control line 66.
  • Another control line 68 leads from the control device 48 to the drive unit 10.
  • the crank 12 of the drive unit 10 rotates in the direction of the arrow 14, so that the push rod 17 executes an essentially reciprocating movement (double arrow 70).
  • the rockers 18 and 22 swing about the pendulum axis of the wiper shaft 20, so that the push rod 24 also executes a reciprocating movement, indicated by a double arrow 25.
  • the rocker arm 26 oscillates about the pendulum axis of the wiper shaft 28.
  • the two wiper levers 30 and 32 also oscillate via the pendulum angles designated by O, so that the two wiper fields 54 and 55 result on the window.
  • the size, the pendulum angle Q is determined by the design of the pendulum gear 12, 17, 18, 22, 24, 26.
  • the position of the two wiping fields 54 and 55 is determined solely by the sensor 44, which reports to the control electronics 48 when the wiper blade 36 has reached the sensor 44. If this cannot be achieved due to the above-mentioned circumstances, there is a further control impulse from the control electronics 48 on the drive motor 58, which drives the threaded nut 62 in the direction that the effective length of the push rod 17 is shortened so that the wiper fields 55, 54 are displaced such that the wiper blade 36 is detected by the sensor 44.
  • the drive motor 58 together with the gear nut 62 and the threaded spindle 64, thus forms an adjusting element for adjustment the effective length of the push rod 17.
  • the drive unit 10 is switched off by the control electronics 48 when the wiper levers 30 and 32 are in the positions shown in FIG. 1.
  • the drive motor 58 then receives a corresponding command from the control electronics 48 so that it extends the effective length of the push rod 15, 16 to such an extent that the rockers 18, 22 and 26 are pivoted through an angle ⁇ in the direction of arrow 72, so that the two wiper levers 30, 32 or their wiper blades 36, 40 are transferred to a so-called Abl geStellung 73, 75, in which the position of the wiper blade 40 is detected by the second sensor 50 and reported to the control electronics 48 via the control line 52 becomes. Thereafter, the drive motor 58 is also switched off.
  • the drive motor 58 shortens the effective length of the push rod 17 in such a way that the two wiper fields 54 and 55 return to the position shown in FIG.
  • the windshield 100 is also assigned two wiper levers 102 and 104.
  • each wiper lever has a wiper arm 106 or 108 and a wiper blade 110 or 112 articulated thereon.
  • Each wiper lever is mounted such that it can swing in the body of a motor vehicle (not shown) via a wiper shaft 114 or 116.
  • a rocker 118 or 120 is firmly connected to each wiper shaft.
  • a push rod 122 and 124 is articulated, the other end of which is articulated to the free end of a driven crank 126 and 128.
  • Cranks 126 and 128 are each driven by an electromotive drive unit 130 and 132.
  • the drive units 130 and 132 give an output movement to the cranks 126 and 128, which is indicated by the two double arrows 134 and 135, respectively.
  • This drive movement is transmitted to the respective wiper lever 102 or 104 via the gear linkage 122, 118 or 124, 120.
  • Each wiper lever lies with its wiper blade 110 or 112 on the pane 100.
  • the wiper blades 110 and 112 each sweep over a wiping field 136 and 138, in that they oscillate on the window over an angle J * - ⁇ .
  • the drive units 130 and 132 are controlled by control electronics 140, which are connected via control lines 142, 144 and 146, 148 to sensors 150, 152 and 154, 156 attached to the windshield 100. Furthermore, the drive units 130 and 132 are connected to the control electronics 140 by control lines 160, 162.
  • the sensors 150 and 152 assigned to the wiper blade 110 for the wiper field 136 are arranged on the pane in such a way that the pendulum angle f corresponds to the requirements. This also applies to the sensors 154 and 156, which are assigned to the wiper blade 112 responsible for the wiper field 138. It should be noted, however, that the sensor 154 in the position shown in FIG.
  • the control electronics 140 does not signal the control electronics 140 when the pendulum reversal position has been reached, but rather only signals that a certain wiper blade position has been reached. This is because the sensor 154 must lie outside the wiper field 136 of the wiper blade 110 so that it cannot be influenced by the wiper blade 110.
  • the control electronics. 140 must So take into account that in order to obtain the prescribed wiping field or the required overlap of the two wiping fields 136, 138, the wiper lever 104 still has to travel a certain distance so that the required pendulum angle "results , This also applies to the sensor 152 for the wiper blade 110, which is responsible for the other pendulum reversal position of the wiper blade 110.
  • the two wiper levers continue to run downward beyond their drawn position until the wiper blades 110 and 112 are detected by the two sensors 164 and 166, respectively.
  • the electronic control unit 140 then switches off the drive units 130 and 132, respectively, so that the two wiper levers 102 and 104 are stopped in a so-called storage position, which lies outside the two wiper fields 136 and 138 by the angle C °.
  • the sensor 154 can also be coded in such a way that it only responds to the wiper blade 112. In such a case, the sensor 154 can then likewise be arranged directly in the reversed position of the wiper blade 112, because then the wiper blade 110 can then cause no reaction in the sensor 154.
  • a windshield 200 which is assigned a wiper device which has two wiper levers 202, 204.
  • Each wiper lever 202, 204 has a pendulum-driven wiper arm 206 or 208.
  • Each wiper arm carries at one end a wiper blade 210 or 212 resting on the window 200.
  • Each wiper lever 202 or 204 is in a frame-fixed bearing 214 or 216 pendulum mounted.
  • a wiper shaft is mounted in each of the two so-called wiper bearings 214 and 216, to each of which a rocker arm 218 and 220 is attached.
  • a rocker arm 218 and 220 On each of the free ends of the rockers 218 and 220, one end of a push rod 222 and 224 is articulated, the other end of which is connected in an articulated manner to a crank 226 and 228 driven to swing back and forth.
  • the cranks 226, 228 each belong to a drive unit 230 or 232, which ensure a pendulum movement of the wiper levers 202 and 204, respectively.
  • the wiper blades 210 and 212 resting on the windshield swing over an angle over the windshield 200 and in each case process a wiping field 238 and 240, respectively.
  • the two drive units 230 and 232 are connected to control electronics 238 via control lines 234 and 236, from which further control lines 241, 242, 244, 246, 248, 250, 252, 254 lead to sensors attached to the pane 200, the position of which is indicated below:
  • a sensor 264 and 266 are also arranged in the reversal positions of the wiper blade 212.
  • Each of these four sensors 260, 262, 264, 266 is assigned a further sensor which is located within the pendulum angles 234 and 236 and at least partially within the wiping fields 238 and 240.
  • the two sensors 260, 262 are assigned two sensors 261 and 263, which are connected to the control electronics 238 via the control lines 252 and 244.
  • Sensor 264 includes a another sensor 265, and another sensor 267 'is assigned to the sensor 266 ' .
  • the two further sensors 265 and 267 are connected to the control electronics 238 via the control lines 240 and 254.
  • the sensors 260 and 262 or 264 and 266 take care of reversing the drive units 230, 232, so that the wiper levers 202 and 204 carry out the required pendulum movement (double arrows 227).
  • the further sensors 263, 267, 261 and 265 can serve to emit a distant signal to the control electronics 238, by means of which, for example, the working speed of the drive units 230, 232 is reduced, so that the reversal of the drive units can take place without any problems when the main signals from sensors 262, 260, 264, 266.
  • this also applies analogously to the other reversal position for which sensors 260, 261 and 264, 265 are responsible.
  • the output shaft of the drive unit directly as a wiper shaft, so that the linkage ratios 218, 220, 222, 224, 226, 228 can be omitted.
  • the sensors in front of, in or behind the pane.
  • the sensors as so-called proximity switches, which are arranged in the window frame, on or in the body of the vehicle.
  • the sensors can not only be arranged on the windshield or on the body itself, but also on the wiper lever.
  • further sensors which stop the wiper device in a so-called assembly position, in which, for example, work on the wiper lever can be carried out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Transmission Devices (AREA)
  • Window Of Vehicle (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

Un essuie-glace pour véhicules à moteur comprend un bras (30, 32, 102, 104, 202, 204) qui possède un élément d'essuyage (36, 40, 110, 112, 210, 212) en contact avec le pare-brise (42, 100, 200) et est animé d'un mouvement alternatif entre deux positions inversées, par une unité d'entraînement comprenant un moteur d'entraînement électrique (10, 130, 132, 230, 232). Pour obtenir un essuie-glace particulièrement fiable, silencieux et précis, au moins un capteur (44, 50, 150, 152, 154, 156, 164, 166, 262, 263, 266, 267, 260, 261, 264, 265), lequel détecte une position de fonctionnement donnée du bras d'essuie-glace (30, 32, 102, 104, 202, 204) et coopère avec un dispositif de commande (48, 140, 238) qui régit le moteur d'entraînement électrique (10, 130, 132, 230, 232), est agencé sur le véhicule à moteur.
EP19890910835 1988-11-22 1989-10-04 Essuie-glace pour vehicules a moteur Withdrawn EP0397811A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839382A DE3839382C2 (de) 1988-11-22 1988-11-22 Wischvorrichtung für Scheiben von Kraftfahrzeugen
DE3839382 1988-11-22

Publications (1)

Publication Number Publication Date
EP0397811A1 true EP0397811A1 (fr) 1990-11-22

Family

ID=6367622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890910835 Withdrawn EP0397811A1 (fr) 1988-11-22 1989-10-04 Essuie-glace pour vehicules a moteur

Country Status (6)

Country Link
US (1) US5157314A (fr)
EP (1) EP0397811A1 (fr)
JP (2) JPH03502313A (fr)
DE (1) DE3839382C2 (fr)
ES (1) ES2017421A6 (fr)
WO (1) WO1990005654A2 (fr)

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CN110108198B (zh) * 2019-05-31 2024-03-08 湖南联诚轨道装备有限公司 一种气动刮雨器马达位置检测装置
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Also Published As

Publication number Publication date
US5157314A (en) 1992-10-20
WO1990005654A2 (fr) 1990-05-31
JP2607673Y2 (ja) 2002-03-04
DE3839382C2 (de) 1998-07-09
ES2017421A6 (es) 1991-02-01
JP2000000041U (ja) 2000-05-30
JPH03502313A (ja) 1991-05-30
WO1990005654A3 (fr) 1990-07-26
DE3839382A1 (de) 1990-05-23

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