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
• • 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
  • B60S1/0488—Wiper arrangement for crash protection or impact absorption
• • 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
  • B60S1/3479—Means to cover the wiper parts
  • B60S1/3481—Means to cover the wiper parts for mounting head

Definitions

• the invention relates to an arrangement for fixing a wiping device for a motor vehicle.
• the invention relates more particularly to an arrangement for fixing a wiping device for a motor vehicle, of the type comprising at least one bearing for guiding in rotation and for fixing a drive shaft in alternating sweep of an arm. wiper, which extends axially in a substantially vertical direction, of the type in which the bearing is fixed with an element of the vehicle body structure by means which allow at least partial separation of the bearing from the element body structure when the wiping device is subjected to an impact.
• the part of the wiper mechanism which projects generally outside the vehicle constitutes a blunt object which is liable to cause injury.
• the wiping device which is arranged in the engine compartment near the passenger compartment, could penetrate inside the passenger compartment through the windshield bay shock.
• the invention therefore provides an arrangement of the type described above, characterized in that it comprises means allowing separation of the wiping arm from the drive shaft during the separation of the bearing from the element body structure.
• the wiping arm is connected to the drive shaft by means of a drive head which extends longitudinally forward from an upper portion of the drive shaft and which comprises a rear element fixed to the upper end of the drive shaft and a front element carrying the wiper arm at its free front longitudinal end, and the rear element and the front element are interconnected by means of link which allow a separation of the rear element from the front element during the separation of the bearing from the body structure element;
• the connecting means comprise at least one initiation zone at break
• the rear element and the front element are two parts of the drive head which are connected by the initiation zone at break;
• the drive head is covered by a cap which comprises means which are capable of acting on the initiation zone at break to initiate the break upon impact;
• the cap comprises at least one projecting element in the form of a wedge which extends substantially vertically downwards and which is received in a housing complementary to the initiation zone at break;
• the connecting means comprise at least one intermediate connecting part interposed between the rear element and the front element, and the intermediate part comprises the initiation zone at break;
• the connecting means comprise at least one elastically deformable element which is able to deform during the separation of the bearing from the body structure element;
• the connecting means comprise at least one intermediate connecting piece which is connected to the rear element and / or to the front element by an elastically deformable element;
• the rear element consists of a socket which extends substantially vertically and which at least partly crosses a vertical hole complementary to the front element, the external wall of the socket and the internal wall of the hole being connected by cooperation of shapes complementary;
• the intermediate piece consists of a transverse pin which is received in complementary housings of the rear element and the front element;
• the connecting means comprise elements of complementary shapes which are nested one inside the other and which are able to disengage when the bearing is detached from the body structure element;
• the rear element is able to pivot overall downward relative to the front element, around a transverse axis during the disengagement of the elements of complementary shapes;
• the rear element and the front element each comprise at least one longitudinal finger, the free longitudinal end of which is bent downwards and is received in a complementary housing, respectively of the front element and the rear element, which is open at its upper face;
• the connecting means comprise at least one element which is capable of deforming plastically during the separation of the bearing from the body structure element; - the rear element is received in a complementary housing of the front element, one face of which is open, and the front element comprises at least one locking tab of the rear element inside the housing of the front element .
• FIG. 1 is a schematic perspective representation of an arrangement according to the invention in which the wiper arm and the drive shaft are shown in their normal operating state;
• FIG. 2 is a view similar to that of Figure 1 in which the wiper arm is shown during its separation from the drive shaft during an impact;
• FIG. 3 is a view similar to that of Figure 1, in which the wiping arm is shown after its separation from the drive shaft;
• FIG. 4 is a detail on a larger scale and in top view of a first alternative embodiment of the invention, in which the drive head is covered by a cap;
• FIG. 5 is a vertical sectional view along line V-V of the arrangement shown in Figure 4;
• - Figure 6 is a schematic perspective representation of the cap shown in Figure 4;
• Figure 7 is a view similar to that of Figure 1 showing a second embodiment of the invention.
• FIG. 8 is a view similar to that of Figure 2, in accordance with the second embodiment of the invention.
• FIG. 9 is a view similar to that of Figure 3, in accordance with the second embodiment of the invention.
• - Figure 10 is a perspective detail on a larger scale and exploded view of the drive head according to the second embodiment of the invention;
• FIG. 1 1 is a perspective view from below of the exploded view of the drive head shown in Figure 10;
• FIG. 12 is a view similar to that of Figure 10, showing a variant of the second embodiment of the invention.
• FIG. 13 is a view similar to that of Figure 1 showing a third embodiment of the invention.
• FIG. 14 is a view similar to that of Figure 2, in accordance with the third embodiment of the invention.
• - Figure 15 is a view similar to that of Figure 3, in accordance with the third embodiment of the invention.
• - Figure 16 is a perspective detail on a larger scale and exploded of the drive head in the third embodiment of the invention;
• FIG. 17 is a perspective view from below of the exploded view of the drive head shown in Figure 16;
• - Figure 18 is a view similar to that of Figure 1 showing a fourth embodiment of the invention;
• FIG. 19 is a view similar to that of Figure 3, in accordance with the fifth embodiment of the invention.
• FIG. 20 is a perspective view from below of the arrangement showing an alternative embodiment of the fifth embodiment of the invention.
• FIG. 1 shows a device for wiping 30 a window of a motor vehicle 32 which comprises a bearing 34 and a drive shaft 36 for driving a wiper arm 38.
• the bearing 34 allows the guiding in rotation and the fixing of the drive shaft 36. It comprises a tubular barrel 40 of vertical axis A1 which is designed to receive, in rotation about its axis A1, the drive shaft 36.
• the bearing 34 For its attachment to a body structure element 42 of the vehicle, the bearing 34 comprises a sole 44 which extends longitudinally rearwards from the barrel 40.
• the bearing 34 also comprises a stump 46 which extends longitudinally towards the 'front from the barrel 40 and which serves to connect the bearing 34 with the drive system (not shown) of the wiping device 30.
• means are provided for fixing the bearing 34 with the body structure element 42 which allow the bearing 34 to be separated from the body structure element 42 when the wiping device 30 is subjected to a violent impact.
• these fixing means consist of a zone of initiation at break 48 made in the sole 44.
• these means can have a completely different design, such as for example an intermediate piece for fixing the sole 44 with the body structure element 42 which is able to deform plastically or elastically for the separation of the bearing 34 from the body structure element 42.
• the wiper arm 38 is connected to the drive shaft 36 via a drive head 50 which extends longitudinally forward from an upper portion of the drive shaft 36.
• the drive head 50 comprises means which allow the wiping arm to be separated from the drive shaft 36 when the bearing 34 is detached from the structural element of box 42.
• the drive head 50 comprises a front element 52 at the free front longitudinal end 52a of which the wiping arm 38 is mounted articulated about a transverse axis A2.
• the free end 52a of the front element 52 also carries means for fixing one end of a spring 55, which keeps the wiper blade 38 (shown in Figure 1 1) in abutment against the glass 32.
• the drive head 50 also includes a rear element 54 which is fixed to the upper portion of the drive shaft 36 by means of a notched conical bearing surface 55 shown in FIG. 4.
• the front element 52 and the rear element 54 are interconnected by the connecting means allowing separation of the wiping arm from the drive shaft 36 during the separation of the bearing 34 from the body structure element 42.
• these connecting means consist of an initiation zone at break 56.
• the front element 52 and the rear element 54 are two parts of the drive head 50 and they are connected by the rupture initiation zone 56 which here consists of a hole with a vertical axis.
• the initiation zone at break which can be of any shape, is designed so that the drive head 50 is strong enough to transmit the drive forces from the drive shaft 36 to the arm d wiping 38, and it must break under impact.
• the wiping device 30 is in the form shown in FIG. 1, in which the drive head 50 consists of a single piece.
• the initiation zone at break 48 of the sole 44 gives way, thereby separating the bearing 34 from l body element 42. This results in a downward movement of the assembly formed by the bearing 34 and the drive shaft 36.
• the drive shaft 36 and the front element 52 remain in abutment on the glass 32 so that they do not follow the downward movement of the bearing 34 and so that the initiation zone at break 56 begins to break. After the impact, as shown in FIG. 3, the initiation zone at break 56 broke, so that the front element 52 and the rear element 54 are completely separated.
• the assembly formed by the bearing 34, the drive shaft 36 and the rear element 54 is then separated from the body structure element 42 and from the assembly formed by the wiping arm 38 and the front element 52.
• the initiation zone at break 56 is produced in a transverse vertical plane passing through the axis A1 of the drive shaft 36 and it comprises two conical holes 60 made in the upper face 50s of the drive head 50.
• the wiping device also comprises a cap 58 which covers the rear element 54 and the rear end 52b of the front element 52.
• the cap 58 comprises a crown 62 which extends vertically downwards from the horizontal upper wall 58s of the cap 58 and the free lower end of which is extended by lugs 64 which are of conical shape complementary to the conical holes 60.
• the legs 64 do not bear against the bottom of the conical holes 60, so that on impact, the cap 60 the crown 62 and the legs 64 are pushed down.
• the paws are of conical shape complementary to the conical holes 60.
• the lugs 64 each have a shoulder 65 on which a support washer 66 rests for a fixing nut 68 of the drive shaft 36 with the drive head 50.
• the crown 62 is a separate element from the cap 58 whose upper end 62s is embedded in an annular complementary housing 70 of the cap 58 to allow locking in position of the cap 58. so that the crown 62 is previously attached to the drive head 50 before being attached to the cap 58.
• the means for connecting the front element 52 with the rear element 54 comprise a transverse pin 72 which is interposed between the front element 52 and the 'rear element 54.
• the section and the material of the pin 72 are determined so that it breaks on impact to guarantee the separation of the front element 52 from the rear element 54.
• the pin 72 is received in complementary holes
• the pin constitutes a transverse axis, or rod, of articulation of the front element 52 with the rear element 54.
• the two vertical wings 78 of the rider 76 each have a longitudinal groove 80 which receives a complementary rib 82 of the front element 52 and of the rear element 54.
• the grooves 80 and the ribs 82 prevent on the one hand any rotation of the front element 52 relative to the rear element
• the drive head 50 forms a sufficiently rigid assembly for the normal operation of the wiping device 30.
• the initiation zone at break 48 of the sole 44 gives way, thereby separating the bearing 34 from l body element 42. This results in a downward movement of the assembly formed by the bearing 34 and the drive shaft 36.
• the drive shaft 36 and the front element 52 remain in abutment on the glass 32 so that they do not follow the downward movement of the bearing 34, thus causing a downward rotation of the rear element 54 relative to the front element 52 around the pin 72, forcing the ribs 82 to come out of the grooves of the jumper 76 which then dissociates from the front element 52 and from the rear element 54. Then, the amplitude of the impact force causes the pin 72 to break.
• the pin 72 is connected to the rear element 54 by means of two hooks 84 which are open upwards.
• the hooks 84 are designed so as to deform elastically to allow the pin 72 to be detached from the rear element 54 on impact, and therefore the front element 52 to be detached from the rear element 54.
• connecting means comprise elements of complementary shapes which are fitted into each other to connect the front element 52 with the rear element 54 , and which are able to dislodge on impact.
• these elements of complementary shape comprise a first finger 86 which extends longitudinally towards the rear from the rear longitudinal end 52b of the front element 52, and whose free end rear 86b is in the form of a hook bent downwards.
• the free end 86b of the first fingers 86 is capable of being received in a complementary housing 88 of the front end 54a of the rear element 54.
• the elements of complementary shape also include second fingers 90 which extend longitudinally towards the 'front from the front longitudinal end 54a of the rear element 54, and whose front free ends 90a are in the form of hooks bent downwards.
• the free ends 90a of second fingers 90 are able to be received in complementary housings 92 of the rear end 52b of the front element 52.
• the hook shape of the first and second fingers 86, 90 ensures longitudinal locking of the front element 52 relative to the rear element 54.
• the first and second fingers 86, 90 are distributed transversely so to allow the transmission of the sweeping forces to the wiping arm 38.
• the second fingers 90 are arranged on either side of the first finger 86.
• the rear element 54 is able to pivot down around a transverse axis so that the free ends 86b, 90a of the fingers 86, 90 no longer cooperate with the complementary housings 88, 92, the front element 52 is then able to slide generally longitudinally forward.
• the drive head 50 includes a jumper 76 similar to the jumper 76 of the second embodiment of the invention.
• the two vertical wings 78 of the rider 76 each have a longitudinal groove 80, and each groove 80 receives a complementary rib 82 of the front element 52 and of the rear element 54.
• the drive head 50 forms a sufficiently rigid assembly for the normal operation of the wiping device 30.
• the zone of initiation at break 48 of the sole 44 gives way, thereby separating the bearing 34 from l body element 42.
• the drive shaft 36 and the front element 52 remain in abutment on the glass 32 so that they do not follow the downward movement of the bearing 34, thus causing a downward rotation of the rear element 54 relative to the front element 52 around a transverse axis, forcing the ribs 82 to leave the grooves of the jumper 76 which then separates from the front element 52 and from the rear element 54.
• the assembly formed by the bearing 34, the drive shaft 36 and the rear element 54 are separated from the body structure element 42 and from the assembly formed by the wiping arm 38 and the front element 52.
• the rear element 54 consists of a socket with a vertical axis and which is coaxial with the drive shaft 36.
• the rear element 54 is received in a complementary vertical hole 94 of the front element 52, in addition, the external cylindrical wall 54e of the rear element 54 and the internal cylindrical wall 94i of the vertical hole 94 are linked by cooperation of shapes. complementary, for example by knurling, so that the connection between the front element 52 and the rear element 54 is capable of transmitting the driving forces of the wiping arm 38.
• the front element 52 and the 'rear element 54 must be able to separate during impact.
• the rear element 54 is designed so as to be able to deform elastically or plastically to allow sliding. of the rear element 54 relative to the front element 52 on impact, as shown in FIG. 19.
• the front element 52 is a hollow element, for example made of folded or stamped sheet metal, which defines a housing 96 open at its lower face.
• the rear element 54 is of complementary shape to the housing 96 and it is received inside the housing 96.
• the rear element 54 is fixed to the drive shaft 36 by a nut 68.
• the front element 52 and the rear element 54 are connected together before they are fixed to the drive shaft 36.
• the front element 52 comprises an access port, not shown, which is crossed by the nut 68.
• the shapes of the housing 96 and of the rear element 54 are such that they allow the transmission of the driving forces of the wiper arm 38.
• the front element 52 has two locking tabs 98 which extend vertically downwards from the lower edges 100i of the side walls 100 of the housing 96 and which have been folded horizontally so as to partially cover the lower face 54i of the element rear 54 to vertically lock in position the rear element 54 inside the housing 96.
• the dimensions of the locking tabs 98 are determined so that upon impact, they deform plastically to extend it vertically downwards, thereby separating the rear element 54 from the front element
• the fingers 86, 90 can be rectilinear and have a projecting shape at their underside.
• the invention makes it possible to have a separation of the wiping arm 38 from the drive shaft 36, so that the wiping arm 38 no longer constitutes an element capable of causing injury in the event of a violent impact. .

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vibration Dampers (AREA)
• Transmission Devices (AREA)
• Pivots And Pivotal Connections (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=29558764

Family Applications (1)

Country Status (6)

Families Citing this family (15)

Family Cites Families (6)

• 2002
  • 2002-05-28 FR FR0206480A patent/FR2840270B1/fr not_active Expired - Fee Related
• 2003
  • 2003-05-26 CN CNA038120542A patent/CN1655974A/zh active Pending
  • 2003-05-26 JP JP2004507120A patent/JP2005527428A/ja active Pending
  • 2003-05-26 AU AU2003238395A patent/AU2003238395A1/en not_active Abandoned
  • 2003-05-26 WO PCT/EP2003/005476 patent/WO2003099620A1/fr not_active Application Discontinuation
  • 2003-05-26 EP EP03732461A patent/EP1507690A1/de not_active Withdrawn

Non-Patent Citations (1)

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