FR2744973A1 - MOTOR VEHICLE WINDSCREEN WIPER PROVIDED WITH A TRIM HOOD CARRIED BY A BRUSH JOINT CONNECTOR ON THE WIPER ARM - Google Patents

Abstract

The invention provides a motor vehicle wiper, of the type in which the wiper (10) comprises a wiper blade (14) rotatably mounted on a wiper arm (20) by via a connector (16), of the type in which the connector (16), which is rotatably mounted on the arm (20) and fixed on the brush (14), has in cross section in the shape of an inverted U and is intended to overlap the central portion of a main yoke (28) of the blade (14), characterized in that the connector (16) carries a trim cover (12) which covers the wiper blade ( 14).

Description

The invention relates to a windscreen wiper for a motor vehicle provided with a

  covering hood carried by an articulation connector of the

  wiper blade on the wiper arm.

  The invention relates more particularly to a motor vehicle windscreen wiper, of the type in which the windscreen wiper comprises a wiper blade mounted for rotation, about a transverse axis, at the free longitudinal end of a wiper arm via a connector, of the type in which the connector, which is rotatably mounted on the arm and fixed on the blade, has an inverted U-shaped cross section and is intended for

  overlap the central portion of a main caliper of the broom.

  It is particularly interesting to provide the wiper blade

  window of a covering hood because this makes it easier to integrate it into the general aesthetics of the vehicle thanks to a shape

  cleared compared to that of the broom.

  Furthermore, a covering hood covering the entire brush has the advantage of being able to support various accessories such as an aerodynamic deflector or such as a watering device for

the glass to be wiped.

  However, there is the problem of fixing the cover

  on the wiper blade.

  Generally, the wiper cover comprises means for hooking by elastic interlocking on a central stirrup of the wiper blade and it is then necessary to provide an opening in the covering cover in order to allow mounting to

  rotation of the blade at the longitudinal end of the wiper arm.

  In addition, when the user proceeds to replace the blade, he is obliged to release the wiper blade from the means

  hooking by elastic fitting of the cover.

  Given the aging of plastic materials, it is then possible for this operation to cause the attachment means to rupture, which then requires replacing the covering hood.

  at the same time as the brush is replaced.

  The invention therefore aims to provide a simple and

  economical to fix the cover on the broom.

  To this end, the invention proposes a wiper of the type seen above, characterized in that the connector carries a cover

  covering that completely covers the wiper blade.

  According to other characteristics of the invention - the covering hood is produced integrally with the connector and comprises two longitudinal lateral flanks joined by an upper back, the flanks each carry, in the central portion of the hood, a transverse stud which extends towards the outside of the covering hood, the two studs are received in holes formed in two parallel wings of a yoke arranged at the front end of the arm so as to form the rotary mounting of the connector on the arm, and the cover comprises a member for fixing and locking the brush; - The covering hood comprises at least one longitudinal end section which is pivotally mounted, about a transverse axis, on a main section of the cover; the longitudinal end section has a longitudinal connection end, two parallel longitudinal lateral flanges of which are intended to be received between the two parallel flanks of a connection end of the main section, and the flanges of the connection end of the section end comprise two transverse cylindrical pins directed outwardly, which are intended to be received in corresponding cylindrical housings formed in the sides of the main section to form the pivot of articulation of the end section on the main section; - The main stirrup of the brush carries at least one spreader mounted articulated at one of its longitudinal ends, and the hinge axis of the spreader on the stirrup corresponds substantially to the pivot axis of the end section on the main section; - The end section of the covering hood is integral with the lifter; - The end section of the covering hood is mounted on the lifter by elastic interlocking; the lifting beam carries, at a longitudinal end, a secondary lifting beam articulated, and the covering hood comprises two successive pivoting sections whose pivot axes correspond to the axes of articulation respectively of the lifting beam and of the secondary lifting beam; One of the lateral flanks of the covering hood has an internal channel which extends along its lower edge and which has projection orifices in the direction of the glass so as to form a spraying ramp; One of the lateral flanks of the covering hood comprises, on a lower longitudinal edge, a housing which extends along at least part of the hood and which is open in the direction of the window to be wiped to receive a spray bar intended to spray washing liquid on the glass; - the spray bar extends along the main section - the spray bar is made of flexible material and in that it extends along the main section and an articulated end section; - one of the lateral flanks of the covering hood forms an aerodynamic deflector; - The spray bar is carried by the lateral flank opposite to that forming an aerodynamic deflector; - The covering hood includes a series of air discharge vents trapped under the hood; - the gills are arranged in a portion of the upper back of the hood; and - the portion of the upper back of the covering hood which

  includes the gills is masked by the wiper arm.

  Other characteristics and advantages of the invention

  will appear better on reading the description which follows and which is

  made by way of nonlimiting example with reference to the accompanying drawings in which: - Figure 1 is an exploded perspective view of a wiper blade provided with a covering hood in accordance with the teachings of the invention ; - Figure 2 is a view similar to that of Figure 1 in which the wiper is shown assembled; - Figure 3 is a cross-sectional view along line 3-3 of Figure 2 showing the means for assembling the brush on the cover and the cover on the arm; - Figure 4 shows an alternative embodiment of the invention in which the cover is provided with an articulated end section; - Figure 5 is an exploded perspective view of the pivoting assembly means of the end section on the main section of the cover; - Figure 6 is a cross-sectional view showing the pivoting assembly means of the end section on the main section; - Figure 7 is a cross-sectional view showing an alternative embodiment of the invention in which the covering hood has a lateral flank forming an aerodynamic deflector; and - Figure 8 is a view similar to that of Figure 7 showing an alternative embodiment of the invention in which the

  cover cover carries a spray bar.

  FIG. 1 shows a wiper 10 for a motor vehicle comprising a cover 12 for covering a wiper blade 14, a central portion 16 of which forms a connector allowing mounting to be rotated, around a transverse axis A1, of the blade 14 at the front longitudinal end 18 of a wiper arm 20. The wiper arm 20 has a rear longitudinal end 22 by which it is rotatably mounted, around a transverse axis A0, on a drive head (not

  shown) in alternating scan.

  The covering cover 12 has, in cross section, an inverted U shape so as to form a housing 25 delimited transversely by two longitudinal lateral flanks 24, and delimited upwards by a transverse upper back 26 which connects the

two sides 24.

  The brush 14 is thus capable of being received inside the housing 25 delimited by the cover 12 so as to be hidden on

  over its entire length and over almost its entire height.

  In accordance with the teachings of the invention, the central part 16 of the cover acts as a connector allowing mounting to

  rotation of the brush 14 on the arm 20.

  Such a type of connector has been described and represented in the

document No. FR-A-2.700.309.

  As can be seen more particularly in FIG. 3, the central part 16 of the cover 12 is intended to overlap a part

  center of a main caliper 28 of the brush 14.

  In known manner, the main stirrup 28 has in cross section an inverted U shape formed by two wings

  longitudinal parallel 30 joined by an upper back 31.

  In the central part of the main stirrup 28, a longitudinal opening 33 has been formed by cutting the upper back 31 and an upper portion of each of the two wings 30 which are moreover connected together by a transverse rod 32, d 'axis

  transverse A2, arranged in the opening 33.

  A locking member 34 is slidably mounted longitudinally in a rectangular longitudinal slot 36

  formed in the upper back 26 of the central part 16 of the cover 12.

  The locking member 34 comprises a hook 38 which is formed on a lower face 40 and which has the shape of a pin

  hair open longitudinally backwards.

  The locking member 34 is intended to slide longitudinally in the light 36 between a first advanced mounting position in which the lock is arranged longitudinally in front of the transverse rod 32 so that, when the brush 14 is introduced vertically from the bottom towards the top in the housing delimited by the cover 12, the transverse rod 32 of the brush 14 is opposite the open end of the hook

  lock 38 in hairpin.

  When the locking member 34 is moved longitudinally rearward to a second locking position, the transverse rod of the brush 14 is received at the bottom of the

  hook 38, which makes it possible to secure the cover 12 and the brush 14.

  Means (not shown) are also provided which make it possible to axially block the cover 12 relative to the brush 14, for example by cooperation with transverse edges of

  the opening 33 of the main stirrup 28.

  To allow the hood 12 to be rotatably mounted on the front longitudinal end 18 of the arm 20, the central part 16 of the hood 12 has, on each of its sides 24, a transverse stud

42 which extends outwards.

  The front longitudinal end 18 of the arm 20 is in the form of a yoke and comprises two parallel longitudinal flanges 44 between which is received the central part 16 of the cover 12. The flanges 44 of the arm 20 are each provided with a cylindrical bore 46 of axis A1 in which the transverse studs 42 of the cover 12 are received. In order to improve the aesthetic integration of the cover 12 and of the arm 20, the lateral flanks 24 of the cover 12 are each provided with a transverse recess 48 which is arranged in before the corresponding transverse stud 42, and which delimits a front part of the cover 12 of the same transverse width as the flanges 44 of

the end 18 of the arm 20.

  In a known manner, a jumper (not shown) can be interposed between the arm 20 and the central part 16 of the cover 12. Such a jumper notably includes sockets interposed between the studs 42 of the cover 12 and the holes 46 of the arm 20 to avoid wear

premature studs 42.

  FIGS. 4 to 6 show a second embodiment of the invention in which the covering hood 12 is provided

  of an articulated end section 50.

  Indeed, the wiper blade 14 generally comprises at least one lifting beam 52 mounted articulated, around a transverse axis

  A3, at one of the longitudinal ends of the main stirrup 28.

  This lifter 52 carries a flexible wiping squeegee 56 either directly or via a secondary lifter 54

  also mounted articulated at one of its ends.

  The main stirrup 28, the lifter 52 and the secondary lifter 54 thus form an articulated structure which is deformable in a longitudinal plane substantially perpendicular to the plane of the window to be wiped and which allows to press, over its entire length, the

  squeegee 56 against the glass so as to follow its curve.

  However, the curve of the glass is generally most pronounced at its peripheral edges which are intended to be

  wiped by the front longitudinal end of the broom.

  In this way, the lifter 52 which is arranged at the front longitudinal end of the stirrup 28 is capable of pivoting at a significant angle around its axis of articulation A3 relative to the main stirrup. It therefore appears advantageous to provide that the end section 50 of the cover 12 which covers the lifter 52 can pivot relative to a main section 58 of the cover 12, fixed relative to

main caliper 28.

  For its pivoting mounting, the end section 50 comprises a connecting end 60 in the form of a yoke provided with two parallel longitudinal flanges 62 which are intended to be received between the two lateral flanks 24 of a connection end 64

of the main section 58.

  The flanges 62 carry transverse lugs 66 directed towards the outside, which are intended to be received each in a blind cylindrical housing 68 corresponding formed in the face

  internal of each of the sides 24 of the main section 58.

  For mounting the end section 50, it suffices to pinch the two flanges 62 of the end section 50 transversely towards one another by elastically deforming the section 50 to engage the two transverse lugs 66 between the two sides 24 of the main section 58 until they are opposite the corresponding housings 68. The flanges 62 then move transversely to resume their initial shape and the transverse pins 66 are received in the cylindrical housings 68 so as to form a

  hinge pivot for the end section 50.

  Of course, it is preferable that, when the cover 12 is mounted on the brush 14, the axis A4 of the articulation pivot of the end section 50 corresponds to the axis A3 of articulation of the lifter 52 on the stirrup main 28 of the brush 14. It is then possible to resiliently fit the end section 50 onto the lifter 52 so that the end section 50 of the cover faithfully follows the pivots of the spreader 52 when the wiper 10 sweeps the window

to wipe.

  It can also be provided that, in the case (not shown) where the front longitudinal end of the lifter 52 carries a secondary lifter 54, the end section 50 is itself produced in two successive sections, pivotally mounted one by report

to the other.

  The lateral flanks 24, respectively of the main section 58 and of the end section 50, have at the connection ends, respectively 64, 60, a cut in an arc centered on the axis A4 so as not to prevent the pivoting

relative of the two sections 50, 58.

  FIG. 7 shows an alternative embodiment of the invention in which one of the sides 24 of the covering cover 12 is profiled so as to form an aerodynamic deflector 70 making it possible to combat the tendency of the brush to come off.

  when the vehicle is traveling at high speed.

  The sidewall 24 which forms the deflector 70 must be that which is

  arranged upstream in the air flow circulating around the vehicle.

  Provision may be made to provide the lower edge 72 of the sidewall 24 forming a deflector with a flexible lip making it possible to cushion any

  impact of cover 12 against the surface of the windshield.

  In the alternative embodiment which is shown in FIG. 8, one of the sides 24 of the covering cover 12 carries a spraying ramp 74 intended to spray washing liquid against the window to be wiped. The spray bar 74 can be made integrally with the cover 12, in the form of an internal channel formed in a lower edge of the sidewall 24 and comprising projection orifices facing the window to be wiped or, as well is shown in Figure 8, in the form of an independent part received in a housing 76 which is formed on the lower edge of the sidewall 24 and which is open in

direction of the window to be wiped.

  In the embodiment which is shown in FIG. 8, the cover 12 has a sidewall 24 which forms an aerodynamic deflector 70 while the opposite sidewall 24 carries the ramp

74.

  It is also possible to provide a covering cover 12 (not shown) comprising a pivoting end section 50 and

  carrying an aerodynamic deflector and / or a spray bar 74.

  In the latter case, the spray bar 74 may only extend over the length of the main section 58 of the cover 12 to avoid

  disturb the pivoting of the end section 50.

  Finally, it may be necessary to provide a means of evacuating the air capable of being engulfed inside the hood when the vehicle is traveling at high speed to prevent this air from causing

lifting the wiper.

  Also, it is possible, for example, to provide holes (not shown) in the upper back 26 of the cover 12 so as to allow the air to escape. These louvers can advantageously be arranged in a portion of the cover located behind its central portion 16 so that the louvers are at least partially masked by the wiper arm 20 which covers

this portion of the hood.

O10

Claims (17)

  1. Motor vehicle windscreen wiper, of the type in which the windscreen wiper (10) comprises a windscreen wiper blade (14) mounted for rotation about a transverse axis (A1), at the front longitudinal end (18) of a wiper arm (20) via a connector (16), of the type in which the connector (16), which is rotatably mounted on the arm (20) and fixed on the brush (14), which has an inverted U-shaped cross section and is intended to overlap the central portion of a main stirrup (28) of the brush (14), characterized in that the connector (16) carries a cover dressing   (12) which covers the wiper blade (14).   2. Wiper according to claim 1, characterized in that the covering hood (12) is made integrally with the connector (16) and comprises two longitudinal lateral flanks (24) joined by an upper back (26) , in that, in the central portion (16) of the cover (12), the sides (24) each carry a transverse stud (42) which extends towards the outside of the covering cover (12), in that that the two studs (42) are received in holes (46) formed in two parallel wings (44) of a yoke arranged at the front end (18) of the arm (20) so as to form the rotational mounting of the connector (16) on the arm (20), and in that the cover (12) comprises   a member (34) for fixing and locking the brush (14).   3. Wiper according to claim 2, characterized in that the covering hood (12) comprises at least one longitudinal end section (50) which is pivotally mounted, about an axis   transverse (A4), on a main section (58) of the cover (12).   4. Wiper according to claim 3, characterized in that the longitudinal end section (50) has a longitudinal connecting end (60) including two parallel longitudinal side flanges (62) are intended to be received between the two sides parallel (24) of a connection end (64) of the main section (58), and in that the flanges (62) of the connection end (60) of the end section (50) comprise two cylindrical pins transverse (66), of axis (A4), directed outwards, which are intended to be received in corresponding cylindrical housings (68) formed in the sides (24) of the main section (58) there to form the pivot of articulation of the end section (50) on the main section (58).   5. Wiper according to any one of claims 3   or 4, characterized in that the main stirrup (28) of the brush (14) carries at least one lifter (52) mounted articulated at one of its longitudinal ends, and in that the articulation axis (A3 ) of the spreader (52) on the stirrup (28) corresponds substantially to the pivot axis (A4)   of the end section (50) on the main section (58).   6. Wiper according to claim 5, characterized in that the end section (50) of the covering hood (12) is integral spreader (52).   7. Wiper according to claim 6, characterized in that the end section (50) of the covering hood (12) is mounted   on the lifting beam (52) by elastic interlocking.   8. Wiper according to any one of claims 5   7, characterized in that the lifter (52) carries, at a longitudinal end, a secondary lifter (54) hinged, and in that the covering hood (12) comprises two successive pivoting sections whose pivot axes correspond to the articulation axes of the lifter (52) and the lifter respectively secondary (54).   9. Wiper according to any one of claims   previous, characterized in that one of the lateral flanks (24) of the covering hood (12) has an internal channel which extends along its lower edge and which has projection orifices in   direction of the window so as to form a spray bar.   10. Wiper according to any one of claims   1 to 9, characterized in that one of the lateral flanks (24) of the covering hood (12) comprises, on a lower longitudinal edge, a housing (76) which extends along at least part of the cover (12) and which is open in the direction of the window to be wiped to receive a spray bar (74) intended to spray washing liquid onto the window.   11. Wiper according to one of claims 9 or 10   taken in combination with claim 3, characterized in that the   watering ramp (74) extends along the main section (58).   12. The wiper according to claim 10 taken in combination with claim 3, characterized in that the spray bar (74) is made of flexible material and in that it extends along the main section (58 ) and an end section articulated (50).   13. Wiper according to any one of claims   2 to 12, characterized in that one of the lateral flanks (24) of the cover   covering (12) forms an aerodynamic deflector (70).   14. Wiper according to one of claims 9 to 12   taken in combination with claim 13, characterized in that the spray bar (74) is carried by the lateral flank (24) opposite to   that forming an aerodynamic deflector (70).   15. Wiper according to any one of claims   previous, characterized in that the covering hood (12) comprises   a series of air exhaust vents trapped under the hood.   16. Wiper according to claim 15 taken in combination with claim 2, characterized in that the louvers are arranged in a portion of the upper back (26) of the cover (12). 17. Wiper according to claim 16, characterized in that the portion of the upper back (26) of the covering hood (12) which   comprises the gills is masked by the wiper arm (20).