FR2534306A1 - WINDOW REGULATOR FOR A MOTOR VEHICLE DOOR, INCLUDING AN ELECTRONIC WINDOW POSITION CONTROL CIRCUIT - Google Patents

Abstract

WINDOW REGULATOR FOR AUTOMOTIVE VEHICLE DOORS INCLUDING AN ELECTRONIC CONTROL CIRCUIT FOR THE POSITION OF THE GLASS V, CONNECTED TO A POSITION CONTROL UNIT 15 PLACED IN THE INTERIOR OF THE VEHICLE, THIS CONTROL CIRCUIT COOPERATING WITH A DETECTOR DEVICE 18 THE POSITION OF GLASS V WHICH PROVIDES IT WITH AN ELECTRICAL POSITION SIGNAL, IN WHICH, IN ADDITION, A GUIDE RAIL 9 IS INTENDED TO BE FITTED A LITTLE VERTICALLY IN THE DOOR C COOPERATES WITH A TROLLEY 13 WHICH SLIDES ON THIS RAIL AND WHICH IS RIGIDLY CONNECTED TO THE WINDOW WHILE COUPLING TO AN ELECTRIC MOTOR DEVICE 1 CAPABLE OF CAUSING THE SLIDING OF THE CART 13 ALONG THE RAIL 9 UNDER THE CONTROL OF THE ELECTRONIC CIRCUIT, THIS WINDOW REGULATOR IS CHARACTERIZED AS ITS CIRCUIT CONTROL ELECTRONICS IS MOUNTED IN A BOX 14 WHICH FORMED A MONOBLOC UNIT WITH ITS MOTOR DEVICE 1 AND IN THAT THE POSITION DETECTOR 17 IS ASSEMBLED WITH THE GUIDE RAIL 9.

Description

The present invention relates to window regulators for

motor vehicles.

  More particularly, the invention relates to a lifter

  be electrically operated by means of which an occupant of a vehicle

  the can operate the door window by means of a control button placed for example on a console located between the

two front seats.

  Such window regulators are already known. They generally include an electronic control circuit for the position of the window which cooperates with a device for detecting the position of the window, a detector which supplies it with an electrical position signal. This signal can represent a single position of the window or being an image of any position thereof during its opening or closing stroke On the mechanical level, such a window lifter comprises a guide rail which is

  intended to be mounted approximately vertically in the door.

  On this rail, can slide a carriage which is connected to the window and which is driven by an electric motor device, so that the window can occupy any position under the control of the electronic circuit So far, the components of the lifter glass such as the drive unit, the control circuit, the mechanism of the guide rail and the carriage are produced in the form of independent units, the control circuit being more often than not mounted near the control button

control in the passenger compartment.

  As a result, the installation of the window regulator requires a fairly large workforce, because each individual component must be mounted separately in the door or in the passenger compartment,

  while a bundle made up of relatively large numbers of conductors

  A large space must be provided between the door and the control circuit. Finally, the position detector being placed near the window in the door, - a beam must be provided connecting this

  position detector on the control circuit.

  The object of the invention is to provide a window regulator whose mounting is convenient and which requires a minimum of electrical conductors.

  The subject of the invention is therefore a window regulator for

  motor vehicle body comprising an electronic window position control circuit, connected to a position control member placed in the vehicle interior, this control circuit cooperating with a device for detecting the position of the window which provides an electrical position signal, window lifter in which, in addition, a guide rail intended to be mounted approximately vertically in the door cooperates with a carriage which slides on this rail and which is rigidly connected to the window while being coupled to an electric motor device capable of causing the carriage to slide along the rail under the control of the electronic circuit, this window lifter being characterized in that said electronic control circuit is mounted in a housing which forms a one-piece unit with said motor device and in that

  the position detector is assembled with the guide rail.

  Thanks to these characteristics, a set of

  ble of the window regulator which can be mounted in the door

  using some fasteners, such as screws.

  As electrical conductors leading to the passenger compartment of the vehicle, it suffices to have a harness bringing to the window regulator, the supply voltage and the signals coming from the control button which is generally a two-position switch, which returns to a

  bundle of five conductors only In addition, these characteristics

  have the advantage of allowing mechanical adjustment

  pic of the various parts of the window regulator outside the door

  which further facilitates installation.

  Other characteristics and advantages of the invention

  will appear during the description which follows, given

  by way of example only and with reference to the appended drawings, in which: FIG. 1 is a schematic elevation view of a window regulator according to the invention, the constituent parts of this

  window regulators being represented in the position they occupy

  in a vehicle door; Fig 2 is a window lift wiring diagram according to Fig l; Fig 3 shows a variant of the window regulator position detector; and FIG. 4 represents another variant of a position detector. In the embodiment shown in FIGS. 1 and 2, it is, by way of example, a window regulator driven by

  cable However, the invention is not limited to this particular mode.

  link mechanical drive In addition, the invention also applies to various types of electronic window regulators and in particular those using the conventional control in which the window can move at a single speed under the action of the button control, the movement being continued as long as the user presses this control button, or even those more complex in which the control circuit allows

  two-speed motor drive In this case, approx.

  Sage a potentiometer command associated with a window copying potentiometer or a so-called sequential command in which the duration of actuation of the button determines the speed of

  movement of the glass There are descriptions of circuits

  control electronics for such window regulators in FR 2 460 383 of June 28, 1979, 2 484 168 of June 5, 1980 and 81 01 793 of

  January 1981, all filed in the name of the Claimant.

  That said, FIG. 1 schematically represents the chassis C of a door of a motor vehicle in which is mounted a motor device 1 comprising an electric motor 2 provided with a reduction gear 3 which drives a pulley 4 shown in

dashed in Fig l.

  The drive pulley 4 cooperates with a cable 5 at

  Bowden type of which a few turns of the inner core 6 are coiled

  lées around the pulley 4 This core also passes over deflection pulleys 7 and 8 secured to a guide rail 9 The outer sheath of the cable 5 has a first part ila extending between the motor device 1 and a plate mounting 11 of the guide rail 9 and a second part l Ob which extends between this drive device and another mounting plate 12 of this rail The latter extends approximately vertically in the frame C while a carriage 13 is slidably mounted on this rail while being attached to the core 6 of the cable The carriage 13 carries the pane V. The arrangement which has just been described is known and does not

has no special features.

  According to the invention, the electronic control circuit of the motor 2 is mounted in a housing 14 which forms an integral part with the casing of this motor and which therefore constitutes a monobloc assembly with the motor device 1 This electronic circuit which can be of the type described in one of the aforementioned patents, comprises a first connection plug 14a intended to be connected on the one hand to the control button 15 (Fig 2) and on the other hand to the power source 16 of the vehicle The bootmaker ' 14 also includes a second connection socket 14 b which is intended to be connected to a position detector 17. In the variant of FIG. 1, this detector is mounted on the plate 11 of the guide rail 9 and is formed by a switch limit switch 18 The position detector 17 also includes an actuating button 19 for the switch 18 and this button is slidably mounted in an opening 20 of a support tongue 21 forming part of the plate 11 and folded at the square by rap port thereon The button 19 cooperates with an adjustable pusher 22

secured to the carriage 13.

  FIG. 2 shows the wiring diagram for the window regulator which has just been described. It can be seen that the sockets 14 a and 14 b are connected respectively to plugs 23 a and 23 b, one connected to a bundle F1 and the other to a bundle F 2 The bundle Fl is connected to the power source 16 and to the control button 15

  located in the passenger compartment of the vehicle at a suitable location.

  The harness F 2 connects the socket 14b to the switch 18.

  It can be seen that the mounting of this window regulator is very convenient. First of all, the assembly shown in FIG. 1 is unitary and can therefore be easily mounted in the door by simple screws associated respectively with the plates 11 and 12 and with the motor device 1, while for electrical connection, just two bundles of Fl and F 2 of conductors, one comprising only five conductors in total and the other not

comprising only two.

  It will be noted that advantageously, the stop 22 is provided with a nozzle 22 a whose diameter O is chosen to be larger than the diameter d of the pusher 20 actuating the switch 18, so that when the carriage 13 is brought towards its high position, the tongue 21 can constitute a movement stop, which prevents deterioration of the switch if the assembly comes to

to be deregulated.

  In FIG. 3, a variant of the position detector is shown. In this case, provision is made between the motor device 1

  on the one hand and the mounting plate-11 on the other hand (not shown

  shown in Fig 3), a cable sheath 23, a part 24 of which is formed by non-contiguous turns of a wire wound in a helix, usual in cables of the Bowden type. A mounting plate 25 is secured to the casing of the motor device. 1 and this plate supports a switch 26 cooperating with a thrust plate 27 preferably constituted by a washer fixed on the sheath of the cable 23 Thanks to this washer, the switch 26 can

  be mounted in any angular position around the cable.

  Under these conditions, when the drive device is

  pressed and the window is at the end of its travel, continue it

  te of the action of the motor device on the cable 23 brings the

  non-contiguous turns of portion 24 of each other by com-

  axial pressure, so that the switch 26 approaches the plate 27 to finally be actuated This interrupts

  the power supply to the motor device in this particular position

free from running.

  In the variant of FIG. 4, the device for detecting the position of the window comprises a linear potentiometer mounted on the rail 9 of the window regulator. This potentiometer first of all comprises a cursor 28 secured to the carriage 13 as well as two tracks 29 and 30 provided on the guide rail 9 Track 29 is

  of the resistive type and is glued to an adhesive insulating support, itself

  even fixed on the guide rail 9 Preferably, it is reinforced by hot polymerization on the rail 9 Of course, the wiper 28 is isolated from the carriage 13 This wiper can return the signal by the track 30 which is constituted by a layer conductive brought in an identical manner on the rail 9 as the track 29 Thus, one can avoid a mobile electrical connection by flexible wires between the wiper 28 and the corresponding input

of the electronic circuit 14.

  Of course, a connector provided at the bottom or at the top of tracks 29 and 30 is connected to the electronic circuit 14 by the socket 14b as described above with regard to Fig 2 The tracks 29 and can also be constituted by deposits of a varnish or an insulating enamel on the rail 9 then the deposit or roller or

  by screen printing of the conductive elements of tracks 29 and 30.

  As the rail 9 is made of metal, the tracks thus formed can be polymerized or baked at high temperature, which gives them

  very high friction resistance.

ï

Claims (6)

  1 window regulator for the door of a motor vehicle comprising an electronic control circuit for the position of the window (V), connected to a position control member (15) placed in the passenger compartment of the vehicle, this control circuit cooperating with a device (18; 26; 28) for detecting the position of the window (V) which supplies it with an electrical position signal, window lifter in which, in addition, a guide rail (9) intended to be roughly mounted vertically in the door (C) cooperates with a carriage (13) which slides on this rail and which is rigidly connected to the window while being coupled to an electric motor device (1) capable of causing the carriage (13) to slide along the rail (9) under the control of the electronic circuit, this window regulator being characterized in that said electronic control circuit is mounted in a housing (14) which forms a monobloc unit with said motor device (1) and in that that the position detector (17; 26; 28) is assembled with the guide rail (9).   2 window regulator according to claim 1, characterized in that said housing (14) of the electronic control circuit comprises, for the connection of the window regulator with said control member (15) and to the power source (16) of the vehicle, a single connection socket (14a) intended to cooperate with the plug   (23 a) of a single bundle (Fl) of conductors, which are pre-   reference to the number of five in this bundle (Fl).   3 Window regulator according to any one of the claims   1 and 2, characterized in that said boot (14) for the   electronic control circuit further comprises for the con-   connection with said position detector (17; 26; 28), a second socket (14 b) intended to cooperate with a plug (23 b) of a second bundle (F 2) of conductors which are at least two in number in this beam (F 2).   4 Window regulator according to any one of the claims   1 to 3, characterized in that said position detector (17) comprises a limit switch (18) intended to detect the extreme upper position of the window (V), in that this switch (18) is mounted on a support (11) of the guide rail in front of a stop member (21), on the opposite side of which is intended to come to apply in the upper position of the window (V) a pusher (22) preferably adjustable, able to operate   the switch (18) through said stop member (21).   Window regulator according to claim 4, characterized in that said stop member (21) is a plate placed in the extension of the path of said pusher (22 a), the latter having in section a dimension (D) greater than that ( d) a hole (20) made in the plate and behind which is the member   switch control unit (18).   6 Window regulator according to any one of the claims   1 to 3, characterized in that tracks (29,30) with predetermined electrical conduction are affixed to said guide rail (9) and in that a cursor (28) in contact with these tracks (29,30) is integral with said carriage (13) to form with said tracks   a linear potentiometer cooperating with said electro- circuit   control as a window position detector (Y). 7 window regulator according to claim 6, characterized in that one of said tracks (29) has a predetermined ohmic resistance, in that the other track has a negligible ohmic resistance and in that the tracks are connected by the a   from their ends to said second beam (F 2) by means of a con nector.   8 Window regulator according to any one of the claims   1 to 3, in which said motor device (1) is coupled to said carriage (13) via the core (6) of a transmission cable (5) with an outer sheath of helically wound spring wire, characterized in that said sheath (23) comprises a portion (24) with non-contiguous turns, in that said position detector is a limit switch (26) fixedly mounted in the vicinity of said portion (24) with non-contiguous turns and in this   that the cable (23) comprises an actuating member (27) solidai-   re of one of the extreme turns of said portion (24) with turns   not joined so as to actuate said switch (26) when   that said carriage (13) has reached the upper end of travel and   continues to be requested by said motor device (1) with   axial pressure of said portion (24) with non-contiguous turns.