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
• • 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
  • B60S1/0896—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to a vehicle driving condition, e.g. speed

Definitions

• the present invention relates to a control device of a wiper system of a window of a motor vehicle. It still relates to a window wiper system comprising such a device or to a motor vehicle comprising such a device.
• the 4-wire geared motors have four electrical terminals, three power terminals and an information terminal, namely:
• the information of the fixed stop position is intended for a computer to inform the wiper system that the brushes are in the rest position (called “parking") and that the system can stop feeding the gear motor.
• a switch connected to the information terminal is controlled by the position of the gearmotor and changes state depending on the position of the brushes.
• the "5-wire geared motors" have five electrical terminals, five power terminals, ie:
• connection terminal supplied by the vehicle electrical network via the previous terminal until the gearmotor is in the position corresponding to the rest position of the brushes.
• a switch is formed between the last two terminals, this switch is controlled by the geared motor position and is closed when the brushes are not in the rest position while it is open when the brushes are in the rest position. In addition, when the brushes are in the rest position, a contact is established between the last connection terminal and the ground terminal.
• a wiper system 300 comprising a "4-wire” geared motor is hereinafter described with reference to FIG. It mainly comprises a computer 301, a man-machine interface 302 called “control member under steering wheel” and the gear motor 303.
• the control member under the steering wheel is of the low power type, that is to say that no power signal passes through the control member under the steering wheel.
• a selector 312 makes it possible to connect a power supply terminal 31 1 to one of the terminals 313, 314, 315 or 316, depending on whether the driver wishes to respectively stop the wiper system, to put it into intermittent operation, to make it operate slow speed or run at high speed.
• These terminals 313, 314, 315 and 316 are respectively connected to inputs 317, 318, 319 and 320 of the computer.
• the calculator presents also an input 321 connected to a terminal 306 of the geared motor, the information terminal of the fixed stop position mentioned above.
• the computer supplies one or the other of its outputs 322 and 323 which are respectively connected to terminals 307 of high speed and 308 speed of the geared motor.
• the computer comprises two controlled switches 304 and 305.
• the use of such control means, with two controlled switches, is expensive.
• 5-wire geared motors are older geared motors that can be controlled by means of very simple and economical control means.
• a wiper system 200 comprising a "5-wire" geared motor is described below with reference to FIG. 2. It mainly comprises a computer 201, a man-machine interface 202 called a "steering control device" and the geared motor 203. .
• the control member under the steering wheel is of high power type, that is to say that power signals pass through the control member under the steering wheel. Coupled selectors 205 and 206 enable the wiper system to be stopped, intermittently operated, operated at low speed, or operated at a high speed.
• the selector 206 is connected to a terminal 215 supplied by the on-board electrical network of the vehicle.
• the computer 201 comprises only a controlled switch 204 controlling a short circuit between the terminals 216 and 217 or the supply of the terminal 217 by the on-board electrical network of the vehicle.
• the calculator also comprises two inputs 220 and 221, one of information of the position of the gearmotor and an information of the position of the selector 206.
• the input 220 is in the high state only when the selectors are in a position controlling the intermittent operation.
• the input 221 is in the low state only when the gearmotor is in its fixed off position.
• the steering wheel control member also comprises a terminal 207 connected to the above-mentioned terminal 217, a terminal 208 connected to a low-speed terminal 210 of the geared motor 203 and a terminal 209 connected to a high-speed terminal 21 1 of the geared motor 203 .
• the object of the invention is to provide a control device of a motor wiper system wiper glass to overcome the problem mentioned above and improving the known control devices of the prior art.
• the invention proposes a simple and economical control device for controlling a "4-wire" geared motor.
• the device controls a geared motor of a wiper system of a window of a motor vehicle.
• the geared motor comprises a first winding causing the rotation of the gear motor to a first gear when powered and a second winding causing rotation of the gearmotor at a second speed when powered.
• the device comprises a control member for feeding either the first winding or the second winding. It is characterized in that the control device permanently comprises a controlled switch and a selector of the control member arranged in series on the supply line of the first and second windings.
• the control device may comprise positions of the control member corresponding to the following states of the wiper system:
• the control device may comprise a computer and n positions of the control member corresponding to n states of the wiping system, the computer being informed of n-1 positions of the control member by the state of n-1. inputs of the computer, the calculator deducing that the control member is in the n th position if it is not in one of the n-1 other positions. n may be equal to 4 and / or the n th position of the control member may correspond to operation at the highest speed of the wiper system.
• the control device can control an opening of the controlled switch in the event of the gearmotor being locked.
• the control device can control, via the controlled switch, an intermittent operation of the wiper system when the control member is in a position corresponding to the first-speed operation of the wiper system and when the vehicle is traveling at a speed less than a first threshold, especially when the vehicle is stationary.
• the control device may be intended for controlling a "4-wire" geared motor.
• the wiper system of a window of a motor vehicle comprises a control device defined above and a geared motor comprising a geared motor.
• the motor vehicle may comprise a wiper system defined above.
• the attached drawing shows, by way of example, an embodiment of a control device according to the invention.
• Figure 1 is a diagram of a first wiper system known from the prior art.
• Figure 2 is a diagram of a second wiper system known from the prior art.
• Figure 3 is a diagram of an embodiment of a wiper system according to the invention.
• Figure 4 is a diagram of an embodiment of a wiper system controller according to the invention.
• Figure 5 is a diagram of an embodiment of a geared motor position sensor.
• the wiper system 100 shown in FIG. 3, mainly comprises a "four-wire" geared motor 103, a computer 101 and a man-machine interface 102 called “control member” or “control member under the steering wheel".
• the system is intended for wiping a window of a motor vehicle.
• the computer and control unit constitutes a control device.
• the geared motor comprises a motor 107 having three supply terminals 1 13, 1 14 and 1 15. To rotate at high speed, a first motor winding is supplied between the terminal 1 13 and the ground terminal 1 and to turn low speed, a second motor winding is supplied between the terminal 1 14 and the ground terminal 1 15.
• the geared motor also includes a switch 130 to determine if it is in its fixed stop position.
• the geared motor comprises an information output terminal 1 12 which is for example connected to the ground terminal when the geared motor is in its fixed stop position, the switch being kept open in the opposite case.
• a switch which can also be used in the various wiper systems described in this application, can be produced as shown in FIG. Figure 5 using three conductive tracks 2, 3, 4 movable relative to latches 5, 6, 7 respectively resting on them.
• the fixed stop track 4 gives information to the computer thanks to a low current. Therefore, it does not need to be complete and can be performed by a portion of the track, i.e. a reduced track width relative to the other tracks.
• the "5-wire” geared motor must, in order to operate, comprise a complete fixed stop track, since this transmits a strong current necessary to power the geared motor.
• the "5-wire” geared motor must imperatively include the three latches 5, 6, 7.
• the controller 102 comprises two selectors 105 and 106 coupled to each other. It can be positioned in four positions:
• the selector 105 makes it possible to send to the computer a position information of the selectors. For example, an information input 108 of the computer is set to a low state when the selectors are in the first "0" position, an information input 109 of the computer is set to a low state when the selectors are in the "0" position. the second position "Int”, an information input 1 10 of the computer is set low when the selectors are in the third position "LS" and all information inputs 108 to 1 10 are in the state up when the selectors are in the fourth position "HS".
• the states of the selectors may be encoded in any other way. These states are interpreted by a means 1 16 for controlling the controlled switch 104.
• the computer 101 also includes an information input 1 1 1 connected to the terminal 1 12 of the geared motor. This input is also connected to the control means. This input is for example in the high state when the geared motor is not in its fixed stop position and in the low state when the geared motor is in its fixed stop position.
• the control means 1 16 comprises a module 170 and an OR logic gate 180. The output of the OR logic gate makes it possible to control the switch 104.
• the two inputs of the OR logic gate are connected to the information input 1 1 1 and an output of the module 170.
• the module 170 is attacked by the information inputs 108 to 1 10. It can also be attacked by the CAN network of the vehicle supplying in particular vehicle speed information.
• the module 170 comprises hardware and / or software means, such as a computer program, making it possible to generate an output signal as a function of the signals it receives as input.
• This module and in particular these means, make it possible to define the control strategies of the wiping system and / or the protection strategies of the wiper system.
• the output signal may consist of a continuous high logic signal when the wiper system is to be operated at low continuous speed or continuous high speed.
• the output signal may consist of a high and low state alternating logic signal to define an intermittent operating timing of the wiper system.
• the controlled switch can be controlled according to the position of the selectors and the position of the geared motor.
• the controlled switch 104 makes it possible to connect according to its state the terminals 1 17 or 1 19 to the power supply of the on-board network of the motor vehicle or to the ground.
• the controlled switch 104 of the device according to the invention is not an on-board power supply switch for supplying the on-board network from a battery.
• An electrical system including the control device according to the invention obviously comprises an on-board power supply switch in addition to the controlled switch 104.
• An on-board power supply switch is controlled by a control member of the control system. power supply as ignition key.
• the controlled switch 104 of the device according to the invention is controlled by the control means 1 16 depending in particular on the position of the selector and the position of the motor shaft 107.
• the windings of the small and high speed motor are arranged in two parallel branches selectively connected by means of the selector 106 in series with the controlled switch 104 between the ground and a source of electrical energy such as the electricity network of the electric vehicle.
• the control device permanently comprises the controlled switch and the selector of the control member arranged in series on the supply line of the first and second windings. In other words, the control device is arranged so that any current supplying the motor passes through the controlled switch and the selector switch 106.
• control device comprises a single controlled switch.
• control member 102 comprises, for example, four parallel conducting tracks 151, 152, 153 and 154 and two integral sliders 155 and 156 movable in four positions. indexed “0”, “Int”, “LS” and “HS” and in respective contacts with tracks 151 and 152 and with tracks 153 and 154.
• the motor 240 is directly controlled by the control member in strong current, including during its return phase to the fixed stop position via the fixed stop track requiring a fifth + 12V power supply wire.
• the only information sent to the computer is intermittency control information, which triggers an opening / closing cycle of the low speed control relay.
• the architecture according to the invention makes it possible to control the intermittent operation and the low speed by the computer using a single and only controlled switch 104.
• the stop, intermittent operation low speed and high speed operation as well as position information of the geared motor are sent to the computer.
• Two pieces of information are added with respect to the architecture of Figure 2.
• a power wire of high section is removed between the motor and the controller.
• a status information of the control member, for example a control information of the high speed is deduced in the computer, in particular in the control means of the controlled switch.
• a state of the controller is deduced from the fact that the controller is not in the other possible states.
• the gearmotor position information and the intermittent operating state cause one or more switchovers of the controlled switch by the control means which preferably comprises the OR logic gate 180.
• the controlled switch is positioned so as to supply the terminals 1 17 and 1 19.
• the control unit returns When the switch is in the off position, the relay remains in this position until the gearmotor returns to its fixed stop position. Because, in this case, it is the position information of the geared motor that keeps the switch controlled in this state through the logic gate OR 180 evoked.
• the controlled switch connects the terminal 1 17 to ground and the gearmotor is immediately braked until it stops completely.
• a clocking cycle is defined by switching of the switch controlled by the output of the module 170, via the logic OR gate of the control means 1 16.
• the cut-off time between the states is that of a change of conductive track in the control member: this very short time is imperceptible by the user.
• the timing cycle is canceled, however, if the motor is not in the fixed stop position the controlled switch is held in a feed position of terminal 1 , as long as the engine does not return to its fixed stop position.
• the invention it is possible to protect the geared motor in case of blockage, since the computer controls the controlled power supply switch and it continuously monitors the motor position signal indicating whether the engine is running.
• it is possible to program an automatic transition from low speed operation to intermittent operation when the vehicle speed is zero and, conversely, an automatic transition from intermittent operation to low speed operation. when the vehicle leaves. It is also possible to program, for example through a time delay, a specific position of the wiper blades for their change (service position).
• the invention also makes it possible to eliminate the bell effect (rebound) by controlling the power supply by the computer.
• the invention also makes it possible to minimize the number of electric cables of large section to supply the motor.
• the invention allows standardization: it is possible to use "4-wire" engines on all vehicles regardless of wiper functions more or less advanced required by the specifications of vehicles.
• the electric motor 107 is a DC motor.
• the control member is operable, for example manually, by the driver of the vehicle. It allows the latter to select the desired state of the wiper system. It preferably comprises a lever for positioning the selectors 105 and 106.
• the control device comprises only a controlled switch, that is to say a single switch whose state is controlled according to the position of the control member.
• other controlled switches may be between the control device and the electric power source of the motor vehicle, that is to say between this source and the APC symbol shown in the figures.
• the economic advantage of the invention is multiple: the electronic architecture used is simple and therefore inexpensive, the geared motor used is modern and produced in large series, and therefore inexpensive,
• the geared motor may have only two latches
• the gearmotor may have only a portion of the runway as fixed stop track.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Control Of Electric Motors In General (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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• 2009
  • 2009-10-09 FR FR0957059A patent/FR2951122B1/fr not_active Expired - Fee Related
• 2010
  • 2010-10-08 BR BR112012008170A patent/BR112012008170A2/pt not_active IP Right Cessation
  • 2010-10-08 EP EP10781957A patent/EP2485924A1/de not_active Withdrawn
  • 2010-10-08 RU RU2012118711/11A patent/RU2012118711A/ru unknown
  • 2010-10-08 WO PCT/FR2010/052121 patent/WO2011042670A1/fr active Application Filing

Non-Patent Citations (1)

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