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
  • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
  • B60S1/58—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows
  • B60S1/583—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows including wiping devices
• • 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
  • B60S1/0452—Position of the wipers relative to the vehicle
  • B60S1/0469—Devices for assisting the wiper positioning on the vehicle
• • 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
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/342—Wiper arms; Mountings therefor with means for temporarily uncoupling the wiper arm from the drive

Definitions

• the invention relates to a drive device for a wiper blade, in particular a motor vehicle. It relates more specifically to a drive device of a wiper arm of a motor vehicle, comprising a first motor part secured to a support part fixed on the vehicle body, driving a second part comprising a shaft of driving the wiper arm, this second part being fixed on a bearing integral with a movable element relative to the body, in particular a rear window, this device being associated with a mounting piece, called wedge, providing a connection provision of said first and second portions to ensure correct relative positioning of said portions.
• the first part comprises a motor whose shaft rotates a plate, the motor and the plate being integral with said support piece, the plate being intended to drive a ratchet finger of a crank driving an axis of wiper arm drive included in the second part.
• the plate can be made of plastic or metal and is mounted on the output shaft of the engine. Its role is to drive the drive shaft of the arm with a ratchet finger that is mounted in an oblong hole of this plate.
• An arrangement of this type is described in patent application US 2004/0255424. It is known to use, when mounting the drive device, a shim providing a temporary connection of the first and second parts.
• This shim has two functions namely to ensure a coaxiality between the axis of the bearing and the axis of the motor and ensure that the fixed stop of the axis of the bearing coincides with the fixed stop of the wiper motor, the stop fixed is the position of the broom on the glass when the engine is stopped. It is known to use a wedge constituting a separate piece and usable once or several times. In the case where the hold is reusable, it is necessary to organize its return to the supplier after assembly of the wiper motor on the line of the vehicle assembly.
• the assembly can be decomposed as follows: a) the operator mounts the bearing equipped with the hold and the engine on the tailgate; b) it fixes the motor on the support part integral with the bodywork; c) it adjusts the respective positions of the engine and the bearing using the wedge; (d) fix the landing on the telescope; (e) remove the hold from the bearing and the engine; f) it throws or returns the shim in the assembly circuit.
• the disadvantage of this solution is the significant cost of the hold which can be used only once, and that of the logistics if the hold is used several times.
• the invention solves this problem and, for this purpose, it proposes a device for driving a wiper arm of a motor vehicle, comprising a first motor part secured to a support part fixed to the body of the vehicle, causing a second part comprising a drive shaft of the wiper arm, this second part being fixed on a bearing integral with a movable element relative to the body, in particular a rear window, this device being associated with a piece of mounting, said shim, providing a temporary connection of said first and second parts to ensure a correct relative positioning of said parts, characterized in that said shim is integral with said first portion or said second portion by means of breakable tabs. Thanks to the invention, the operations of withdrawal of the wedge, return and management in the assembly circuit are deleted. This results in a saving of time during the assembly of the wiper.
• said first part comprises a motor whose shaft rotates a plate, the motor and the plate being secured to said support member, said plate being intended to drive a ratchet pin.
• a crank driving a drive shaft of the wiper arm included in said second portion and in that said shim is integral with said plate or said crank via said breakable tabs.
• the shim is an integral part of the plate, resulting from the molding operation of the latter.
• the wedge consists of a tubular element coaxial with the plate and connected thereto by said breakable tongues.
• This tubular element also plays an aesthetic role because it can hide elements of the wiper system such as for example the tray nut or the axis.
• the shim has at its free end of the interlocking and snap-fitting parts of the arm of said crank.
• the shim is a separate part and comprises at least two parts connected by said breakable tabs.
• the first of said parts comprises two parallel rails, facing each other and receiving the longitudinal edges of the crank arm.
• Said first part may also comprise a central half-sphere intended for self-centering by clipping on the end of the motor shaft.
• the second of said parts consists of a tubular element coaxial with the drive axis of the wiper arm having means for locking in rotation relative to the plate and provided with an axial attachment means to the plate .
• said wedge may comprise a third portion extending said first portion through breakable tongues and having a tight interlocking orifice of a pin arranged on the bearing of said second portion.
• said wedge is associated with an accessory part ensuring the maintenance of the crank arm and connected to the bearing by a breakable tongue
• Figure 1 is a perspective view of the first integral drive part of a support part fixed to the vehicle body according to a first embodiment of the invention.
• FIGS. 2 to 4 are perspective views illustrating the mounting of a second part fixed on a bearing intended to be integral with a movable element with respect to the bodywork, in particular a rear window, according to the same embodiment variant of FIG. the invention.
• Figure 5 is a perspective view of a shim according to a second embodiment of the invention.
• Figures 6 and 7 are perspective views illustrating the mounting of a second portion fixed on a bearing intended to be secured to a movable member relative to the body, in particular a rear window, according to the same embodiment variant of FIG. the invention.
• Figure 8 is a perspective view of a shim according to a third embodiment of the invention.
• the drive device of a wiper arm of a motor vehicle comprises a first driving part 1 integral with a support part 10 fixed to the body of the vehicle, driving a second part 2 comprising an axis training 23 of wiper arm.
• This second part 2 is fixed on a bearing 20 secured to a movable member relative to the body, in particular a rear window.
• This device is associated with a mounting piece, called shim 3, providing a temporary connection of the first and second parts 1, 2 to ensure a correct relative positioning of these parts and secured to the first part 1 or the second part 2 via breakable tabs.
• the mounting piece 3 is mounted coaxially with the drive shaft 23 and may consist of a tubular element 31, coaxial with a plate 12
• the first part 1 comprises a motor 11 whose shaft rotates the plate 12 provided with an oblong hole 13, the motor and the plate being integral with the support part 10 and the plate 12 being intended to drive a pawl 21 a crank 22 driving the drive shaft 23 of the wiper arm included in said second portion 2.
• This pawl finger 21 is intended to be received in the oblong hole 13 of the plate 12.
• FIG. 1 shows a first embodiment of the invention.
• the wedge 3 is an integral part of the plate 12, resulting from the molding operation of the latter and is secured to the plate by means of the breakable tongues 30.
• the wedge 3 consists of a tubular element 31 coaxial with the plate 12 and connected thereto by the breakable tongues 30. It has at its free end interlocking and latching portions 32 of the crank 22 of the second part 2 of the device.
• the second part 2 of the device is mounted radially in the shim 3 as illustrated in FIGS. 2 to 4.
• the arm 22 of the crank is received between two interlocking and detent portions 32A.
• the crank arm 22 advantageously comprises two not visible lateral notches cooperating with the lateral edge 32C of these interlocking and latching parts, in order to ensure clipping of the crank arm.
• these interlocking and latching parts 32A each comprise an abutment rib ensuring the engagement of the crank arm 22 in a direction parallel to the axis of the plate.
• the crank arm 22, at the end of the mounting stroke abuts against a third interlocking portion 32B also provided with a retaining rib.
• the crank arm 22 is locked relative to the plate 12 in a plane parallel and perpendicular to the axis of the motor shaft.
• the ratchet finger 21 is introduced into the oblong hole 13 of the plate by virtue of an inclined plane 13A arranged at its radial inlet.
• the oblong hole 13 may be open radially.
• the connection of the striker and the lock ensures an additional point of connection between the two parts 1, 2.
• FIG. 5 represents a second variant embodiment of the invention.
• the shim 3 is a separate part and comprises three parts 3A, 3B, 3C connected by the breakable tongues 30, 30 '.
• a first part 3A is fitted on the crank arm 22 of the second part 2 of the device. To do this, it comprises two rails 35A, 35B parallel, facing each other and receiving the longitudinal edges of the crank arm 22.
• This first portion 3A also comprises a central half-sphere 38 for self-centering by clipping on the end of the motor shaft carried by the first part 1 of the device.
• a second portion 3B consists of a tubular element coaxial with the drive shaft of the wiper arm and having three axial peripheral ribs 40 for locking in rotation in the plate in a position ensuring the synchronism of the two parts 1 , 2 of device.
• This tubular element is also provided with at least one axial attachment means to the plate 12.
• This means consists of a finger 36 parallel to the drive axis of the wiper arm and having at its end a ratchet snap-fastener intended to abut against the face of the plate 12, opposite to the second part 2 of the device. This finger ensures the temporary maintenance of the first and second part 1, 2 before mounting on the vehicle, then maintaining the portion 3B of the wedge with the plate 12, when the breakable tongues 30 are broken.
• a third portion 3C extends the first portion 3A and comprises a hole 37 of tight engagement of a pin 24 arranged on the bearing 20 of the second part 2 of the device.
• the shim 3 is mounted on the crank arm 22 at the end of the axis 23 of the wiper arm output bezel and the axis is mounted on the bearing 20. Then the third portion 3C of the wedge is tightly mounted on the pin 24 of the bearing 20. Then the assembly comprising the shim and the second part 2 of the device is clipped on the plate 12 of the first part 1 of the device.
• the shim 3 comprises a first part 3A and a second part 3B identical to those of the second variant previously described, but does not comprise a third part.
• the shim is associated with an accessory part tightened on the crank arm 22 at the pawl 21 and secured the bearing 20 by a breakable tongue 30 "This part is used to correctly position the assembly on the bearing and not to lose this positioning during transport.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Power-Operated Mechanisms For Wings (AREA)
• Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=35422803

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (6)

• 2005
  • 2005-03-25 FR FR0503000A patent/FR2883536B1/fr not_active Expired - Fee Related
• 2006
  • 2006-03-24 WO PCT/EP2006/002722 patent/WO2006100092A1/fr active Application Filing
  • 2006-03-24 US US11/886,209 patent/US20080189895A1/en not_active Abandoned
  • 2006-03-24 EP EP06723702A patent/EP1861296A1/de not_active Withdrawn

Non-Patent Citations (1)

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