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
  • B60S1/40—Connections between blades and arms
  • B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
  • B60S1/4041—Connections between blades and arms for arms provided with a channel-shaped end the channel-shaped end comprising a pivot pin mounted between the side walls
• • 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
  • B60S1/40—Connections between blades and arms
  • B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
• • 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
  • B60S1/40—Connections between blades and arms
  • B60S1/4038—Connections between blades and arms for arms provided with a channel-shaped end
  • B60S1/4045—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end
  • B60S1/4048—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm
  • B60S2001/4054—Connections between blades and arms for arms provided with a channel-shaped end comprising a detachable intermediate element mounted on the channel-shaped end the element being provided with retention means co-operating with the channel-shaped end of the arm the intermediate element engaging the back part of the arm

Definitions

• the present invention relates to a wiper, in particular for a motor vehicle, in which the axis of articulation of the wiper blade on the wiper arm is held in place by a device ensuring its transverse locking.
• a wiper comprises, on the one hand, a wiper blade which comprises a frame to which is connected, directly or not, a scraper blade intended to come to bear on the windshield and consisting of a profile stiffened elastomer, and, on the other hand, a wiper arm driving the wiper blade in an alternating movement to ensure sweeping of the windshield.
• the wiper blade is articulated on the wiper arm, at the end of it, in order to be able to ensure support of the scraper blade on the windshield during the wiping movement.
• the end of the arm carries, for this purpose, a U-shaped yoke which overlaps the central region of the frame, which generally comprises two facing wings.
• the wings of the yoke and those of the central region of the frame are provided with openings for the passage of a hinge pin, which is held in place by any suitable means.
• the present invention provides a simplification of the assembly operations of the wiper blades on the wiper arms, because it provides both simple and safe mounting.
• the articulation axis after having simply been engaged in the openings made in the wings of the yoke carried by the wiper arm and the wings of the central region of the frame, is blocked in translation by a locking piece previously introduced into the internal space delimited by the wings of the central region of the frame, where it can slide in the longitudinal direction of said frame.
• This room has a laterally open housing, intended to receive the central zone of the hinge axis which is expected to have a smaller cross section than the cylindrical lateral bearing surfaces of the axis which provide the cylindrical hinge.
• the axis In the position where the locking part has, by sliding, been brought into a position such that the central zone of the axis is disposed in the housing that said part contains, the axis is locked in translation by two side walls of the locking piece, because each of these walls is located opposite a drop zone between a lateral bearing of the hinge pin and its central zone of smaller section. It must also ensure the maintenance of the locking piece being in its locked position. This holding in position is advantageously achieved by a latching bead located along the longitudinal bottom edge of the housing.
• the mounting of the wiper blade on the wiper arm can be carried out in a very simple manner, the locking piece being introduced, into the internal space of the central area of the frame, the yoke integral with the end of the wiper arm coming to cover said central area so that these openings come opposite those of the frame, the axis then being introduced through the openings of the yoke and the frame , and the locking piece being brought by sliding, in its position for locking the axis.
• the locking piece is shaped so as to continue to ensure its own maintenance, even when the hinge pin is removed, for example to change the brush. Total removal of the locking piece is prohibited in both directions, by the presence of a safety tab and a bearing surface of the locking piece respectively, these two elements being capable of abutting on worn elements by the frame. It can also be seen that the disassembly of the wiper for the purpose, for example of the replacement of the wiper blade, is extremely easy.
• the present invention therefore relates to the new industrial product that constitutes a wiper intended, in particular, for wiping a windshield for a motor vehicle, comprising, first of all, a wiper arm, of which the end is provided with a U-shaped articulation yoke, the wings of said yoke having two opposite circular openings, and, secondly, a wiper blade to the frame of which is connected a scraper blade which is intended to come to rest on the windshield to be wiped, the central region of said frame comprising two wings, which have two circular perforations facing each other, the yoke of the arm overlapping the central region of the frame, a hinge pin being disposed substantially perpendicular to the wings of said central region of the frame and to the wings of said yoke, through their respective orifices and perforations, said axis comprising cylindrical lateral bearing surfaces having substantially the same diameter as that of the orifices and perforations associated therewith to ensure a cylindrical articulation, characterized in that the articulation axi
• the latter comprises, facing each wing of the central region of the frame, a bearing surface intended to cooperate, with a view to transverse locking, with the corresponding connection zone existing between the central zone of the articulation axis and the corresponding cylindrical lateral span.
• each of the circular perforations of the wings of the central region of the frame is bordered by a cylindrical collar projecting into the internal space between the wings, the locking piece comprising, facing opposite each wing, two longitudinal guide ribs, which cooperate with sliding, respectively, with the highest part and with the most low part of the associated collar.
• the locking piece preferably comprises a retaining means constituted by at least one latching element, the latter consisting in particular of a latching bead disposed along the lateral opening of the housing intended for the zone. center of the axis.
• the locking piece may also include a retaining means preventing its complete separation from the frame even when the hinge pin is removed, this means consisting on the one hand, of a safety tab located on the side opposite to that comprising the housing of the central zone of the axis and, on the other hand, of a bearing located on the side comprising said housing, said tongue and said bearing being capable of abutting on the aforementioned collars.
• the central zone of the latter is cylindrical and, in this case, the housing of the central zone of the axis is, preferably, also cylindrical.
• the connection zones between the central zone and the lateral bearings of the axis are frustoconical.
• said locking piece is a plastic part comprising, firstly, a central core having two opposite side walls parallel to each other , secondly, an upper plate having a curved upper surface intended to come into abutment against the inner surface of the core joining the wings of the U-shaped section of the frame and projecting laterally from the core, on both sides other of the latter, to constitute two longitudinal ribs for guiding the locking piece on the collars, thirdly, a lower plate projecting laterally from the core, on either side thereof, to constitute two longitudinal ribs for guiding the locking piece under the collars, the lower plate having its end furthest from the housing folded back towards said housing to form the safety tab, the bearing surface preventing, with said safety tab, the complete separation of the locking piece from the frame being formed on the central core.
• the wiper comprises, between the yoke and the central region of the frame, an anti-noise plastic stirrup, integral with the yoke.
• an anti-noise plastic stirrup integral with the yoke.
• FIG. 2 is a view in partial longitudinal section, taken in the central region of the frame and showing the locking part when it slides in place,
• FIG. 3 is a view similar to Figure 2 and a sectional view along III-III of Figure 4, showing the locking part in its locking position of the hinge pin;
• - Figure 4 shows a cross-sectional view along IV-IV of Figure 3;
• - Figure 5 is a perspective view of the locking piece fitted to the wiper according to the invention
• - Figure 6 is a partial longitudinal sectional view taken in the central region of the frame and showing an alternative embodiment of the locking piece;
• Figure 7 is a top view relative to Figure 6;
• FIG. 8 is a partial perspective view of the frame equipped with another variant of the locking piece.
• a wiper blade comprising, in the usual manner, a frame 1 carrying two spreaders 2, 3, articulated on pivots, respectively, 4, 5 located each at one end of the frame 1.
• Each of the ends of the lifting beams 2, 3 carries a pair of claws, the pairs of claws being designated, respectively, by the numbers of reference 6, 7 and 8, 9.
• These claws are curved around a profile 10 of plastic material, into which is introduced, through its upper part, the elastomer profile of the scraper blade 11 of the wiper blade.
• the latter is driven in an alternating movement, in order to wipe the windshield of a motor vehicle, by a wiper arm 12 which is connected to the frame 1 by a hinge yoke 13 in the form of U.
• the yoke 13 is constituted by a core 14 and by two wings 15 whose lower free edge is rounded.
• the core 14 has, along its longitudinal axis, two holes 14a, spaced from one another, for the passage of rivets 16 ensuring the fixing of said yoke 13 on the wiper arm 12, the outer face of the core 14 being applied against the flat underside of the arm 12, at the end of the latter, the arm 12 also having two holes 12a in correspondence with those 14a made in the core 14 for the purpose of fixing by the rivets 16.
• the wings 15 of the yoke 13 have two circular orifices 17 arranged opposite one another and each located in the central part of the wing 15 concerned in the vicinity of its rounded lower edge.
• the yoke 13 comes, in the assembly position of the wiper arm 12 on the frame 1, to overlap the central region 18 of the latter which consists of a U-shaped profile comprising a core 19 and two wings 20.
• the dimensions of the yoke 13 and the U-shaped profile constituting the central region 18 of the frame 1 are such that in the mounting position of the wiper, the webs 14 and 19 are spaced relatively one of the other, while the wings 15 and 20, which come opposite, are relatively close to each other.
• the wings 20 have, moreover, each a circular perforation 21.
• perforations 21 are arranged opposite one another and have substantially the same diameter as the orifices 17 which are formed in the wings 15 of the yoke 13, and vis-à-vis which they are placed in the assembled position of the wiper.
• each of the perforations 21 is bordered internally by a collar 22 formed by a fold inward at right angles to the wall constituting the wings 20.
• An articulation axis 23 is disposed perpendicular to the wings 20 of the U-shaped section the central region 18 of the frame 1 and the wings 15 of the yoke 13, this axis 23 passing through the orifices 17 and perforations 21 which are provided for this purpose.
• the articulation axis 23 consists of a cylindrical rod, the end walls 24 of which are rounded, and the central region 25 of which is intended to occupy the internal space of the U-profile forming the central region 18 of the armature 1 has a smaller diameter than the two cylindrical lateral surfaces 26 which frame it.
• the connection zones 27 between the cylindrical lateral surfaces 26 and the central region 25 of smaller diameter are frustoconical.
• each cylindrical lateral bearing 26 and the frustoconical part 27 which is associated with it comes to be housed substantially in the orifices 17, the perforations 21 and the interior space of the collars 22, the smaller diameter end of the connection zone 27 situated approximately at the level of the vicinity of the end edge of the collars 22 and the cylindrical part 26 also projecting slightly outside the wings 15 of the yoke 13.
• an anti-noise stirrup 28 made of plastic is interposed between the yoke 13 and the U-shaped section which constitutes the central region 18 of the frame 1.
• the stirrup 28 comes substantially to marry the internal wall of the yoke 13, so that its core 29 is applied against the soul 14 of the yoke 13 and that its wings 30 come to be placed against the wings 15 of the yoke 13 and occupy , in the lower region of the internal space of the yoke 13, the gap between the wings 15 and the wings 20 of the U-shaped section constituting the part central 18 of the frame 1.
• the core 29 has two orifices 29a. for the passage of the rivets 16, and the wings 30 also have two openings 31 facing each other to allow the passage of the hinge pin 23.
• the noise-canceling stirrup 28 has, over its entire front edge, a bead 32 intended to come to cover the front edge of the wiper arm 12 and the corresponding front edge of the yoke 13. Similarly, on its rear edge, the noise-canceling stirrup 28 has a bead 33 intended to come s '' apply against the whole of the corresponding rear edge of the yoke 13.
• the locking of the axis 23 is ensured by a locking piece designated by the reference numeral 34.
• the locking piece 34 which can be seen in more detail in FIG. 5, is a plastic part comprising a central core 35 disposed between a lower plate 36 and an upper plate 37.
• the core 35 comprises a central element 38 which has the shape of a rectangular parallelepiped in a side wall of which a recess is formed, the bottom of which constitutes a cylindrical housing 39 , with an axis perpendicular to two opposite side walls 40 of the element 38, this housing 39 opening into these two walls 40 and also opening laterally.
• the lower edge of the housing 39 is connected to an inclined wall 41 which joins the lower edge of the element 38 which is perpendicular to the walls 40, so as to form, at the entrance to the housing 39, a latching bead 42 , and its upper edge is tangentially connected to the flat lower face and parallel to the base of the part 38 of a projection 43 having the shape of a flat rectangular parallelepiped which extends beyond said element 38 and which has walls side 44 located in the extension of the walls 40, a front face 45, and an upper face situated in the same plane as that of the element 38.
• the element 38 comprises, on its opposite lateral face to that in which the recess ending in the housing 39 is made, another projecting part 46 whose side walls 47 lie in the same plane as the side walls of the upper plate 37, the upper face of which is in the extension of that of the element 38, and which has a height substantially greater than that of the projecting part 43.
• the end face of the projection 46 carries the reference numeral 48.
• a reinforcing rib 49 connects the underside of the projection 46 and the side wall of the element 38 located at the rear of the housing 39.
• the element 38 rests on and is integral with the lower plate 36 which consists of a strip of material having the shape of an elongated rectangular parallelepiped of small thickness projecting on either side of the side walls 40 to form ribs 50 and extending beyond the inclined wall 41 so as to be finally folded back towards the housing 39 by forming a tongue 51.
• the upper plate 37 completely covers the upper surface of the core 35 and it projects laterally to form lateral ribs 52 which overhang the side walls 40 and 44, and which stop on a cylindrical surface 47a formed by the projecting part 46 which projects laterally, on either side of the central element 38 of the core 35.
• the upper surface 53 of the upper plate 37 is curved so as to be able to come to bear on the Inner face of the core 19 of the central part 18 of the frame 1.
• the mounting of the wiper blade on the wiper arm 12 is carried out as follows:
• the locking piece is introduced into the internal space of the central zone 18 of the frame 1 by presenting the piece 34 by its side carrying the tongue 51, the lower ribs 50 and upper 52 of the piece 34 cooperating with sliding respectively with the lowest part and with the uppermost part of the collars 22, the tongue 51 disappearing for its passage under said collars 22.
• the part 34 is made to slide in order to bring it into a position where its housing 39 is located beyond the perforations 21, these being located, with respect to the part 34, at the level of the region separating the inclined wall 41 and the front edge of the tongue 51.
• the windscreen wiper arm 12 is then placed, of which the yoke 13 and its anti-noise caliper 28 have been made integral with the rivets 16, so that said yoke 13 overlaps the central region 18 of the frame 1, Ci being arranged in such a way that the safety tab 51 of the locking piece 34 is located opposite the front edge of the arm 12. It is arranged that the orifices 17 of the yoke 13 and the perforations 21 of the 'armature 1 are located opposite.
• the axis 23 is then put in place so that one is in the position shown in FIG. 2. It can be seen that in this position, the translation of the axis 23, once in place, is theoretically prevented by following cooperation between the lower edge of the walls 44 and the connection zones 27.
• the locking piece 134 of FIGS. 6 and 7 has an extension 54, preferably provided on the side of the housing 39 opposite the axis 23.
• This extension 54 is provided, at its end, with a protrusion 55 projecting from through an elongated opening 56 formed in the core 19 of the frame 101.
• This opening 56 as visible in FIG. 7, has a rectangular shape whose angles have been rounded; the length of this opening is sufficient to allow, by acting on the protuberance 55, and making it slide, to release the axis 23 from the housing 39.
• This protuberance 55 can be arranged in the form of a sort of rectangular button (FIG. 7) projecting from the upper face of the core 19 of the frame 101; a part 57, of smaller cross section, of this button 55, passes through the opening 56 and is connected to the end of the extension 54.
• the protuberance 55 is therefore a separate part from the extension 54; when this protuberance is assembled with the extension 54, in particular by gluing, the core 19 of the frame 101 is trapped between the protuberance 55 and the end of the extension 54 as visible in figure 7.
• FIG. 7 offers easy access to the protrusion 55 and therefore makes it easier to control the sliding of the locking piece 134 to lock or unlock the axis 23.
• FIG. 8 illustrates, schematically, another alternative embodiment according to which the extension 54 shown in FIG. 6 is provided with a protuberance 58 which protrudes, transversely, on one of the wings of the U-shaped section of the armature 101.
• the solution of FIG. 3 makes it possible to maintain easy control of the sliding of the part 134 while avoiding having to provide, in the core 19 of the armature, an opening such as the opening 56 of the solution of Figures 6 and 7.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pivots And Pivotal Connections (AREA)
• Connection Of Plates (AREA)
• Transmission Devices (AREA)
• Vehicle Step Arrangements And Article Storage (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9290402

Family Applications (1)

Country Status (5)

Cited By (5)

Families Citing this family (2)

Citations (5)

• 1983
  • 1983-07-01 FR FR8310967A patent/FR2548116B1/fr not_active Expired
• 1984
  • 1984-06-26 DE DE19843490325 patent/DE3490325T1/de not_active Withdrawn
  • 1984-06-26 WO PCT/FR1984/000161 patent/WO1985000328A1/fr active Application Filing
  • 1984-06-29 ES ES1984289089U patent/ES289089Y/es not_active Expired
• 1985
  • 1985-02-28 SU SU853862500A patent/SU1326187A3/ru active

Patent Citations (5)

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