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
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/3415—Wiper arms; Mountings therefor with means for supplying cleaning fluid to windscreen cleaners, e.g. washers
• • 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
  • B60S1/3425—Constructional aspects of the arm
  • B60S1/3436—Mounting heads
• • 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
  • B60S1/3425—Constructional aspects of the arm
  • B60S1/3436—Mounting heads
  • B60S1/3438—Manufacturing details thereof
• • 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
  • B60S1/52—Arrangement of nozzles; Liquid spreading means
  • B60S1/522—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms
  • B60S1/524—Arrangement of nozzles; Liquid spreading means moving liquid spreading means, e.g. arranged in wiper arms arranged in wiper blades

Definitions

• the invention relates to a device for wiping a window of a motor vehicle.
• the document FR2735735 describes a device for wiping a motor vehicle window, comprising a windscreen wiper extending longitudinally in a direction substantially parallel to the plane of the window.
• the wiper is attached by an arm itself connected to a drive head on a drive shaft.
• the drive shaft has an internal duct for supplying washing fluid to a sprinkler device attached to the windscreen wiper.
• the drive head has an internal channel connected to the internal conduit located in the drive shaft.
• This wiping device involves defining a cleaning fluid circulation channel inside the drive shaft and supplying the fluid via the shaft; such a definition is therefore complex.
• the object of the invention is to provide a device for wiping a motor vehicle window in which the cleaning liquid circulation channel is of a simpler definition.
• the invention proposes a device for wiping a motor vehicle window, comprising a windscreen wiper arm head, a motor housing for driving the windscreen wiper arm head, a channel of cleaning fluid circulation to the wiper extending through the drive motor housing and the wiper arm head.
• the arm head is rotatable relative to the housing around a drive shaft of the head.
• the head is located outside the vehicle and the housing located in the dry zone of the vehicle extends to the outside of the vehicle, the head and the housing being fitted into each other at the across the boundary between the dry area and the exterior of the vehicle, preferably the head is fitted into the casing.
• the liquid circulation channel extends through a circumferential cavity delimited by the head and the casing at their fitting, the cavity being sealed by internal and external circumferential seals between the head and the casing.
• a seal between the head and the housing is in one groove of the head or the housing and is biased against the other of the head or the housing.
• the seal located in the groove is O-ring with cross section in the shape of X, D, O.
• the device further comprises a recess in the head or the housing, the recess being open towards the drive shaft and towards the circumferential cavity and a seal in the recess urged against the other of head or case.
• the seal in the recess comprises branches hinged together, urged against the head and the housing by the pressure of the cleaning liquid in the circumferential cavity and a metal core in the branches.
• the cleaning fluid circulation channel opens towards a wiper blade from the head, the device further comprising a pipe for conveying the liquid between a connector on the head and a connector on the blade of the wiper, the connectors face each other and the pipe being at least partly concealed by the arm of the wiper.
• the motor housing extends from a dry area of the vehicle to the exterior of the vehicle through a seal through a window or a body element.
• the arm head comprises a part driven by the motor around a drive shaft and a part articulated to the wiper arm, the two parts being assembled together.
• the two parts are assembled together by elastic interlocking.
• the elastic interlocking of the two parts is in a direction parallel to the drive shaft or in a direction transverse to the drive shaft.
• the parts have spring-forming clips that engage elastically and removably with the other part.
• a device for wiping a window of a motor vehicle comprising a windscreen wiper arm, a windscreen wiper arm head, and a drive motor housing of the wiper arm head, the arm head comprising a part driven by the motor around a drive shaft and a part hinged to the wiper arm, the two parts being assembled together.
• the device according to this unclaimed variant may further comprise one or more of the following aspects:
• the elastic interlocking of the two parts is in a direction parallel to the drive shaft or in a direction transverse to the drive shaft.
• One of the parts has spring-like clamps which come into elastic and releasable engagement with the other part.
• the device further comprises a channel for the circulation of cleaning fluid to the windscreen wiper extending through the motor housing and the part of the arm head driven by the motor.
• the cleaning fluid circulation channel leads to a wiper blade from the head, the device further comprising a pipe for conveying the liquid between a connector on the head and a connector on the wiper blade , the connectors are opposite each other and the pipe is at least partly concealed by the arm of the windscreen wiper.
• the head is located outside the vehicle and the housing located in the dry area of the vehicle extends to the outside of the vehicle, the head and the housing being fitted together through the border between the dry zone and the exterior of the vehicle, the head being preferably fitted into the casing.
• the liquid circulation channel extends through a circumferential cavity delimited by the head and the casing at their fitting, the cavity being sealed by internal and external circumferential seals between the head and the casing.
• One of the seals between the head and the housing is in a groove of the head or the housing and is biased against the other of the head or the housing; and the other of the seals between the head and the housing is in a recess in the head or the housing, the recess being open towards the drive shaft and towards the circumferential cavity, the seal being biased against the either of the head or the case.
• the engine housing extends from a dry area of the vehicle to the exterior of the vehicle through a seal through a window or body component.
• the the shows an exemplary embodiment of the device for wiping a motor vehicle window
• the invention proposes a device for wiping a motor vehicle window comprising a windscreen wiper arm head and a motor housing for driving the windscreen wiper arm head.
• the device also includes a channel for the circulation of cleaning fluid to the windscreen wiper extending through the drive motor housing and the windscreen wiper arm head.
• the device allows a simpler definition of the liquid circulation channel.
• the device allows a simpler definition of the channel, which is without risk of corrosion of the metal parts of the engine.
• the device 10 for wiping a window 12 of a motor vehicle.
• the device 10 comprises an arm 14 driving at one of its ends a blade 15 for wiping the window 12. It may be a device 10 for wiping a front or rear window of the vehicle.
• the device 10 comprises a wiper arm head 16 at the other end of the arm 14.
• the arm head 16 allows the arm to be driven by the head 16.
• the head of the arm is arranged under a cover 18.
• Head 16 is connected to arm 14, extending to the left of the .
• the head 16 is driven in rotation by a drive shaft 20.
• the shaft 20 projects from a housing 22 of the drive motor of the shaft 20.
• the engine is in a dry area of the vehicle.
• the engine is located inside the vehicle, protected from outside weather.
• the head 16 is outside the vehicle, unprotected by external bad weather - except by the cover 18 visible on the .
• the border 12 between the dry zone and the exterior of the vehicle is for example a bodywork element or the window 12 of the .
• the device 10 comprises a joint 24 at the border between the dry zone and the exterior of the vehicle.
• the seal 24 has a groove on its circumference in which the boundary is housed – such as the bodywork or the window 12. The seal 24 provides sealing in contact with the boundary.
• Motor housing 22 is in the dry area of the vehicle, below seal 24, and extends to the exterior of the vehicle. More specifically, the motor housing 22 is circumscribed by the seal 24, at the boundary between the dry zone and the exterior of the vehicle. Thus, the housing 22 emerging outside the vehicle, the drive shaft 20 extends from the engine in the dry zone to the outside of the vehicle, in order to drive the head 16 in rotation outside of the vehicle.
• the housing 22 can be in one piece; this can be seen in Figures 5 and 6. Housing 22 extends from the dry area of the vehicle to the outside of the vehicle – across the boundary and seal 24, and even beyond. The advantage is that there are fewer constituent components of the box 22 and therefore a reduced manufacturing and assembly cost.
• the housing 22 can also comprise several parts; on the , the housing 22 comprises a part 221 in the dry zone, under the seal 24 and a part 222, circumscribed by the seal 24 and allowing the drive shaft 20 to extend to the outside of the vehicle.
• the advantage is that the casing 22 has more modularity, in the sense that the motor and its casing 22 can be used in other usage configurations.
• the seal around the shaft 20 is not described here in more detail.
• the shaft 20 allows the rotational drive of the head 16.
• the head 16 has a conformation 26 allowing meshing by a toothing 28 located at one end of the shaft 20, outside the vehicle.
• the head 16 is rotatable relative to the housing 22 around the drive shaft 20 of the head 16.
• the head 16 is rotatable while the housing 22 emerging outside the vehicle is stationary.
• Head 16 and housing 22 are fitted together across the boundary between the dry zone and the exterior of the vehicle.
• the head 16 is fitted into the housing 22. This makes it possible to guide the head 16 in rotation during its drive by the shaft 20.
• the device 10 comprises a window cleaning liquid circulation channel 12.
• the liquid reaches the brush 15, so as to ensure effective cleaning of the window 12.
• the cleaning liquid circulation channel extends to the through motor housing 22 and wiper arm head 16.
• the housing and the head are shaped to define the liquid circulation channel. This makes it easier to define a liquid path through parts of the window wiper device. Passing the liquid channel through the housing 22 and the head 16, and not through the drive shaft 20, provides greater freedom in defining the course of the channel. In addition, such a simpler definition of the channel is without risk of corrosion of the metal parts of the engine.
• the motor housing 22 and the head 16 being preferably made of plastic material, there is no risk of corrosion of these parts - which occurs if the channel passes through the drive shaft 20.
• the passage of the circulation channel through the motor casing 22 and the head 16 facilitates sealing at the border between the dry zone and the exterior of the vehicle.
• the definition of the joint 24 is not impacted by the liquid circulation channel and the joint 24 can therefore have a simple shape, namely a groove on its outer periphery to receive the border 12 and an inner wall to marry the shape of the housing 22 which is a stationary part.
• Cavity 32 is sealed by inner and outer circumferential seals 34, 36 between head 16 and housing 22. This allows cleaning fluid to spread through cavity 32 and pass from stationary housing 22 into head 16 movable in rotation without risk of leakage.
• the circulation channel is propagated in the head 16 by a duct 33.
• the duct 33 extends in the direction of the drive shaft 20 and opens into the cavity 32 – which does not hinder the demolding of the head 16 if necessary.
• the circumferential cavity 32 between the head 16 and the housing 22 allows the flow of the liquid towards the conduit 33 (according to the arrow 35), whatever the angular position of the head 16 with respect to the housing 22 (or the part 222) – which greatly facilitates the design of the circulation channel.
• the device comprises a first circumferential joint 34 between the head 16 and the housing 22.
• the joint 34 is between the head 16 and the part 222 of the housing 22.
• Seal 34 is on the outer circumference of the socket between head 16 and housing 22.
• Seal 34 is located in a groove 38 of head 16 or housing 22 and is urged against the other of head 16 or of the housing 22.
• the groove 38 is in the head 16 and the gasket 34 is biased against the housing 22. This is advantageous in the sense that the thickness of the head 16 in this zone is greater than the thickness of the housing 22, which makes it easier to define the gasket 34 and the groove 38 to fulfill the pressure and sealing constraints.
• the outer seal 34 makes it possible to withstand a pressure of between 2.5 and 5 bar of the liquid in the cavity 32. In addition, the outer seal 34 prevents the penetration of impurities from outside the vehicle, such as salt , dust and vehicle cleaning fluid.
• the presence of the gasket 34 in the groove 38 makes it possible to easily hold the gasket 34 in place. Also, this makes it possible to implement a gasket of simple shape: in section the gasket 34 can be O-ring with an X-, D- or D-shaped section. O. This is given as an example, other forms of joints could be used.
• the device comprises a second circumferential seal 36 between the head 16 and the housing 22.
• the seal 36 is between the head 16 and the part 222 of the housing 22.
• the seal 36 is on the inner circumference of the fitting between head 16 and housing 22.
• Seal 36 is located in a recess 40 in head 16 or housing 22 and is biased against the other of head 16 or housing 22.
• recess 40 is in the head 16 and the seal 36 is urged against the housing 22.
• the internal seal 36 makes it possible to withstand a pressure of between 2.5 and 5 bar of the liquid in the cavity 32.
• the internal seal 36 essentially prevents the penetration of air – the seal 36 being located further inside of the device 10 than the joint 34.
• the recess 40 is preferably in the head 16 for reasons of ease of design of the head 16 thicker in this area than the housing 22.
• the recess 40 can be open in the direction of the drive shaft 20 and in the direction of the circumferential cavity 32. The presence of a recess open in these two directions makes it possible to facilitate the operations of unmolding the head 16.
• the seal 36 in the recess 40 may comprise branches 42 hinged together which are urged against the head 16 and against the housing 22 by the pressure of the liquid in the circumferential cavity 32.
• the seal 36 may comprise several branches hinged together so as to be urged against the head 16 and the housing 22.
• the material used for seals 34 and 36 is, for example, an elastomer such as NBR or synthetic rubber such as EPDM, preferably with a lubricating additive to facilitate sliding contact with housing 22.
• the window wiper device there shows an exemplary embodiment of the window wiper device.
• the cleaning fluid circulation channel opens towards the wiper blade 15 from the head 16 – via the conduit 33.
• the head 16 comprises a connector 46 in the extension of the broom 15 also comprising a connector 48. Between the connectors 46 and 48, the device comprises a pipe 50 visible on the .
• the connector 46 on the head 16 is in the extension of the wiper blade 15 – and the same goes for the connector 48.
• the connectors 46, 48 are opposite one of the 'other and remain during the movement of the device 10.
• the pipe 50 for conveying the liquid between the two connectors 46, 48 is at least partly concealed by the arm 14 of the windscreen wiper; this makes it possible to make the pipe 50 less visible and to protect it. More specifically, the connectors 46 and 48 being in the extension of the broom 15, the pipe 50 is held in position in the movement of the device 10, at least partly hidden by the arm.
• the head 16 can be in one piece or in several parts. According to Figures 2 and 4, the head 16 is in one piece; the head is a part which is on the one hand mobile in rotation with respect to the housing 22 and on the other hand articulated to the arm 14 of the windscreen wiper.
• the flow channel extends through head 16 in conduit 33 to connector 46.
• Figures 5 and 6 show other exemplary embodiments of wiper arm head 16.
• the head 16 is made of several parts.
• the head 16 comprises a part driven by the motor around the drive shaft 20 and a part articulated to the wiper arm 14, the two parts being assembled together.
• the head 16 comprises a part 161 driven by the motor around the drive shaft 20 and a part 162 hinged to the wiper arm 14.
• the head 16 comprises a part 163 driven by the motor around the drive shaft 20 and a part 164 hinged to the wiper arm 14.
• each of the parts has clean function and clean design. This makes it easier to design the structure of these two different parts – and then put them together. In addition, such a design of the head makes it possible to reduce the volume of the head 16, and therefore of the device 10.
• the cleaning liquid circulation channel towards the windscreen wiper extends through the motor housing 22 and the part 161, 163 of the arm head 16 driven by the motor. This makes it possible to limit the extension of the liquid circulation channel to the part of the head driven by the motor. This facilitates the definition of the other part 162, 164 hinged to the arm 14. The process of unmolding this part 162, 164 is simplified due to the elimination of any liquid circulation channel in this part 162, 164.
• the parts 161, 162 and 163, 164 are assembled together by elastic interlocking - or in other words, by clipping.
• the advantage of such an assembly is that it is quick and simple.
• the elastic interlocking of the two parts is in a direction parallel to the drive shaft or in a direction transverse to the drive shaft.
• the fitting is in a direction parallel to the drive shaft, along the arrow 54.
• Such a fitting direction is for example useful when the part 162 is already in the assembled position on the housing 22 and the shaft 20 (not visible in Fig. 7). For example, this is useful when it is necessary to change the arm 14 of the device 10 already in position on a vehicle because the extraction of the part 162 is not hindered by the shaft 20.
• the fitting is in a direction transverse to the drive shaft, along the arrow 56.
• Such a fitting direction is for example useful when the part 164 is not yet in the assembled position on the housing 22 and the shaft 20 (not visible in Fig 8). This is useful when fabricating device 10.
• the elastic interlocking of the parts together can be achieved by clamps forming a spring on one of the parts and coming into elastic and releasable engagement with the other part.
• the clamps deform elastically while the parts fit together and then the clamps return to their stable position in which the parts are held together. Since the clamps are in a stable position, they are not stressed in the assembled position of the two parts together; this increases the service life of the assembly.
• the clamps form a removable spring in the sense that it is easy to disassemble the assembly of the parts. This is useful during the lifetime of the device to change a part.
• the clamps can be opened with bare hands – which makes dismantling easy – or with a tool – which makes assembly safer.
• One or more clamps allow assembly; it is preferable to have several of them, for example two in number, on either side of the drive shaft 20 to ensure good stability of the assembly.
• the clamps 52 are carried by the part 161 driven by the motor shaft. Clamps 52 extend in the direction of the drive shaft (not visible). This facilitates the dismantling of the clamps if necessary, since they are accessible from above the device 10. The interlocking in this direction of the parts 161 and 162 causes the deformation of the clamps 52 then the return to the stable position to maintain the parts 161 and 162 together.
• the clamps 52 are carried by the part 163 driven by the motor shaft. This offers an alternative to the assembly of Figures 5 and 7. The clamps 52 extend in the direction transverse to the drive shaft (not visible). The interlocking in this direction of the parts 163 and 164 causes the deformation of the clamps 52 then the return to the stable position to hold the parts 163 and 164 together.
• the parts 161 and 163 driven by the motor around a drive shaft support the conduit 33 and the connector 46 for the connection of the pipe 50 with the connector 48 of brush 15.
• Connectors 46 and 48 face each other and remain so during movement of device 10.
• the cleaning liquid circulation channel through the housing 22.
• the housing 22 is in one piece and extends from the dry area of the vehicle to the outside of the vehicle – across the border, and even beyond.
• the circulation channel extends through the housing 22 by a conduit 58 into the circumferential cavity 32. Again, the presence of the cavity 32 allows the supply from the housing 22 into the head 16 independently of the angular position of the head 16.
• the conduit 33 is not shown on the .
• the seals 34 and 36 the shape of which is by way of example, the other embodiments of the seals of the are conceivable.
• FIGS. 6 and 8 There shows the assembly of the parts 163 and 164 according to FIGS. 6 and 8.
• the elastic fitting is in a direction transverse to the drive shaft.
• Part 163 is driven by the motor around the drive shaft and part 164 is hinged to the wiper arm.
• the interlocking is carried out by the clamps 52, extending in the direction transverse to the shaft 20; the clamps 52 carried by the part 163 come into engagement with a respective shoulder 54 of the part 164 hinged to the arm 14 (not visible on the because it is a cut – but visible on the ).
• the presence of two clamps 52 ensures the stability of the assembly.
• the cleaning liquid circulation channel through the housing 22.
• the housing 22 is in one piece and extends from the dry area of the vehicle to the outside of the vehicle – across the border, and even beyond.
• the circulation channel extends through the housing 22 by a conduit 58 into the circumferential cavity 32. Again, the presence of the cavity 32 allows the supply from the housing 22 into the head 16 independently of the angular position of the head 16.
• the conduit 33 is not shown on the .
• the seals 34 and 36 the shape of which is by way of example, the other embodiments of the seals of the are conceivable.
• Figures 5 and 6 show a connector 60 on the housing 22, in the dry zone of the vehicle.
• Connector 60 could also be connected to housing part 222 at arrow 30 of the .
• the liquid circulation channel can extend from the connector 60, towards the duct 58 or even the part 222, then towards the cavity 32, the duct 33 in the one-piece head 22 or in the part 161 or 163 of the head 16 in several parts, then to the broom 15 via the pipe 50 between the connectors 46 and 48.
• Such a channel ensures a simpler definition of the elements of the device (as well as a reduction in the number of elements because it n is not necessary to provide a separate pipe all the way through the channel in the housing and the head), their method of manufacture and the tightness of the device itself but also across the boundary between the dry zone and the exterior of the vehicle.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pivots And Pivotal Connections (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=82748126

Family Applications (1)

Country Status (2)

Family Cites Families (6)

• 2022
  • 2022-07-27 WO PCT/EP2022/071134 patent/WO2023006845A1/fr active Application Filing
  • 2022-07-27 EP EP22748382.3A patent/EP4377163A1/de active Pending

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