FR2676694A3 - WIPER BLADE FOR MOTOR VEHICLE COMPRISING A DEFLECTION LISTEL FOR REMOVING SNOW OR ICE FORMATION. - Google Patents

Abstract

a) Wiper blade for motor vehicles having a deflection strip to eliminate the formation of snow or ice, b) Wiper characterized in that an air deflection strip (36, 38) is connected on the longitudinal side of the cover, making only one piece; and in that all the articulations of the frame (24) are covered by overlapping. c) The invention applies to wiper blades for motor vehicles.

Description

Wiper blade for a motor vehicle comprising a list of

  This invention relates to a motor vehicle windscreen wiper with a sweeping blade that is transversely displaceable with respect to its longitudinal extent on the windshield. breeze, squeegee which has10 a support frame with a sweeping listel, maintained by this frame, applied on the windshield and which is provided with a cover engaging with the squeegee at least on its longitudinal sides and open towards the windshield A windscreen wiper blade is already known (US Pat. No. 4,342,126), in which the wiper blade is covered by

  a bonnet disposed on the carrier frame to prevent breakdowns in the operation of the broom caused by inclement weather In the case of high vehicle speeds, this scraper squeege very disadvantageous with respect to the flow is raised from the screen.

  breeze, so that the result of the scan is at least defective. Advantages of the invention The scanning device according to the invention is characterized in that an air deflection strip is connected to the longitudinal side of the device.

  recovery by making one piece.

  This device has the advantage that the wind deflector listel eliminates the disadvantage of the hood, without any other measures must be taken, the covering protecting the carrier frame and the

  sweep list of snow and ice.

  It is particularly advantageous in the case of a wiper squeegee with a multi-membered carrier frame, which has a main yoke, on the middle zone of which engages a driven sweeping arm, and whose other chord member frame is hinged to at least one end section of the main yoke, constituting the middle yoke as a cover for the other frame members and further forming the cover

  in one piece on the main stirrup.

  According to one characteristic of the invention, all the joints of the frame are covered by

the cover.

  According to another characteristic of the invention, the cover is formed in the manner of a hood and covers the squeegee

scanning.

  According to another characteristic of the invention, the main stirrup is constituted as

  a blanket for other frames of the frame.

  According to another characteristic of the invention, the covering is formed of a single

piece on the main stirrup.

  According to another characteristic of

  the invention, the covering is

  parts and other covering parts are connected, preferably snapped, to the stirrup

  principal or partial recovery formed by that

  this. According to another characteristic of the invention, the main stirrup is manufactured at the same time as its metal covering part and in that the other covering parts are made of plastic. According to another characteristic of the invention, the main stirrup having in cross section a U-shaped end section, has in its U-branches bores aligned with each other, which serve to receive eyelets latching which are formed on the other parts

recovery.

  According to another characteristic of the invention, the other covering parts are formed in the region of the U-shaped latching eyelets and are adapted as regards their measured external measurement from branch to branch to the internal measurement between the U-branches of the main yoke and the snap-in grommets are

  arranged on the outer sides of the branches of the U.

  According to another characteristic of the invention, the branches of the TU of the covering parts can be elastically pressed into

  the area of the latching eyelets.

  According to another characteristic of the invention, the latching eyelets are pierced by rolling bores aligned with each other, which serve to receive a frame axis which

  hingedly supports another frame member.

  Drawings The embodiments of the invention are shown in the drawings and explained in more detail.

  detail in the following description.

  Figure 1 shows a view of a wiper blade made of a first embodiment of the invention that is part of a motor vehicle windshield wiper. FIG. 2 is a view from above of the

  squeegee blade according to Figure 1.

  Figure 3 shows the cross sections, which result from a section along the line III-III in Figure 1, in an enlarged representation. FIG. 4 is a view according to FIG. 1 of a wiper squeegee, which is constituted

  according to another embodiment of the invention.

  FIG. 5 is a view from above of the

  squeegee blade according to Figure 4.

  Figure 6 shows the cross-section, which appears from a section along the line VI-VI to the

  Figure 4, in an enlarged representation.

  FIG. 7 is a view from above of a main stirrup forming part of the windscreen wiper blade according to FIGS. 4 to 6, in a

enlarged representation.

  FIG. 8 is a view from above of an extension of the main stirrup according to the squeegee

wiper in Figures 4 to 6.

  Figure 10 is a side view of the extension of the main stirrup according to Figure 9; and Fig. 11 is the cross-section, which shows through a section through the extension of the main stirrup along the line XI-XI to the

  Figure 10, in an enlarged representation.

  Description of the embodiments

  A wiper blade designated by reference numeral 10, shown in FIGS. 1 and 2, shows a support bracket frame 12, which is formed of a plurality of individual stirrups connected to each other in the manner of a balance beam. and so articulated Thus the wiper blade 10 has a main stirrup 14, which is provided with a point

  16 to connect a wiper arm

  The main stirrup 14 has a substantially U-shaped base structure. In the branches of the U 20 and 21 are arranged articulations 24 and 26, on which so-called intermediate stirrups 28 are mounted. At the ends of the intermediate stirrups 28 are articulated so-called clamps 30, which grip with cleats 32 a sweep strip 34 made of a material similar to rubber This construction is known per se and has been used in millions of times In the case of the squeegee 10 according to FIGS. 1 and 3, however, the main stirrup 14 is made in the form of a hood. Thus one of the branches 20 of the main stirrup 14 has an extension 36, which

  away from the brush strip 34 shown in Figure 3.

  This extension 36 is constituted such that it acts as a so-called wind deflector listel or spoiler For this, this extension has at its free end another appendage 38 directed towards the windshield The other branch of the U 21 of the main yoke 14 is extended to the windshield 35 by means of a skirt 40 In its longitudinal extent the main yoke 14 is extended by means of the end sections 37 on the hinge points 24 These end sections 37 extend over the ends of the brush strip 34, so that the entire support bracket system 28, 30 is covered by the cover thus formed. The cover 14, 20, 21 , 36, 37, 38, 40 covers all the hinges of the frame between the main stirrup and the intermediate stirrups as well as between the intermediate stirrups and the stirrup stirrups 30. The nose-shaped appendage 38 and the skirt 40 arrive almost until windshield 35, so that no swirling of the air flow in the space 44 surrounded by the hood is observed. In this way a particularly quiet movement of the movement is obtained when the squeegee is moved. In this case, the deflector 36, 38 formed on the main yoke 14 ensures advantageous use of the air flow coming into the vehicle, indicated by the arrow 46, so that the windscreen wiper 10 on the windscreen 35 that permanently there is the regulatory support pressure (arrow 47) of the squeegee 10 on the window 35 As further shown in Figure 3, an intermediate layer 48 of plastic material is disposed between the main stirrup 14 and the intermediate stirrup 28, which layer carries a hinge pin 50, which serves for the pendular suspension of the intermediate stirrup 28. One of the intermediate plastic layers 48 preventing contact of the metal stirrups 14 and 28 is engaged in bores with c latching lugs 52, which are arranged in the branches 20 and 21 of the main yoke 14 In the spacer 58 connecting the two branches 54 and 56 of the U-shaped plastic intermediate layers 48 is arranged a passage 60, which allows the snap-fastening of the intermediate layer 48 in the main yoke 14 In summary, it can thus be said that in the case of the embodiment of the invention according to FIGS. 1 to 3, the covering 36, 37, 38, 40 is formed directly and in one piece on the main yoke 14 In this case one of the longitudinal sides of the cover is constituted as a deflector listel Finally, it is still necessary to mention that in the case of this form embodiment of the hood 14, 36, 37, 38, 40 is

  made of light metal, preferably aluminum.

  In another embodiment of the invention, which is shown in particular in Figures 4 to 6, the cover of the squeegee 100 is constructed in three parts It has a central part 114, which corresponds approximately to the center piece of the form embodiment of Figures 1 to 3 The length of the main yoke 114 is however not greater than the need for the support of the stirrup groups 28, 30 subordinate to the hinge points 24, In the end zones 116, 118 of the main yoke 114, extension pieces 120, 122 are fastened in such a way that a cover is obtained which corresponds completely to the bonnet already described 14. 36, 37, 38, 40 Thus, the central piece is provided at its two end regions with end pieces 120, 122, which are constituted and arranged in such a way that a closed, rounded cover, open in direction of the bumper This construction will be described in more detail from FIGS. 7 to 11. FIGS. 7 and 8 show the central part 114, which in addition to its main stirrup function also has an extension 136 with a nose 138 directed towards the front - Breeze and an extension corresponding to the skirt 40 (Figure 3) On the end sections 116, 118 are disposed the end pieces 120 122 preferably made of plastic, one piece

  end 120 is shown in Figures 9 and 10.

  A representation of the other end piece 122 is superfluous, because it completely corresponds to the end piece 120, moreover it is carried out symmetrically with respect thereto. FIG. 11 shows the section through the end piece. 120 along the lines VI-VI in Fig. 10 The cut passes through an attachment point, on which the end piece 120 is attached to the main yoke 114 The end piece 120 made of plastic material extends the shape of the main stirrup 114 so that a completely closed hood is again obtained, when the main stirrup 114 is provided with two end pieces 120, 122. The end piece 120 is constructed in substantially U-shaped form. U 140, whose outer dimension measured on the two branches of the U 142, 144 is adjusted to the inner measurement between the two branches 20 and 21 of the main yoke 114, so that, as it has been shown in FIG. 6, it can be housed in the longitudinal channel surrounded by the main stirrup. For this purpose, on the two branches of the U 142, 144 snap-on grommets 146, 148 have been placed. also receive a support pin 150 (Figure 6), which serves for the articulated mounting of the intermediate stirrup 28 A recess in the base zone 140 of the end piece 120 ensures the elasticity necessary to snap the latching eyelet 146,148 in the bores which are arranged in the branches 20, 21 of the main yoke 114 As FIG. 6 further shows, one of the branches 144 of the U is formed with a skirt 140, whereas the yoke 142 of the end piece 120 is transformed into an extension, which is provided with a nose 138 directed towards the windshield This extension 136 is in direct continuation of the extension 136 of the central piece or the main stirrup 114, so that that we also get from n optics a closed hood in round, which covers the

  complete system of caliper support of the squeegee 100.

  By departing from the embodiment according to FIGS. 1 to 3, however, the covering is constructed in three parts. It comprises, in addition to the main stirrup 114, the continuation end pieces 120, 122 which are constituted in the manner already described and are connected to the end sections 116, 118 of the main yoke 114 For a seat without clearance of the end pieces in the main yoke are provided adjustment shoulders 160 which cooperate with end edges 161, resting thereon, branches 20, 21 of the main yoke 114 The construction of the squeegee according to FIGS. 4 to 6, shown in detail and explained from FIGS. 7 to 11, with respect to the embodiment according to FIGS. advantage that the intermediate layer of plastic material 48 (FIG. 3) can be omitted The function of this intermediate layer is assumed in the case of the embodiment according to FIGS. 11 by the branches 142, 144 of the end pieces 120, 122 is also preferably made in the case of this embodiment the main stirrup 114 with its extensions 136, 138, 140 metal, preferably a light metal parts However, in this case it is possible to have, in addition to the possible saving in weight, also the insertion of a colored component into the squeegee 100.

Claims (11)

R E V E N D I C A T IO N S   1) Scanning device for windscreens of motor vehicles with a sweeping squeegee that can move transversely with respect to its longitudinal extent on the windscreen, squeegee which has a support frame with a sweeping listel, maintained by this frame , applied on the windshield and which is provided with a cover engaging the squeegee at least on its longitudinal sides and open towards the windscreen, a sweeping device characterized in that a deflection listel of the air (36, 38 or 136, 138) is connected to the longitudinal side of the cover single piece.   2) Sweeping device according to claim 1, wherein the support frame has several members interconnected in an articulated manner, characterized in that all the joints of the frame (24, 26) are covered by recovery.   3) Scanning device according to one of   1 or 2, characterized in that the   cover is shaped like a hood and   covers the scraping blade (12, 32) in a circle.   4) Scanning device according to one of   2 or 3, wherein the support frame   a plurality of ribs to a main yoke, the central zone of which is hingedly connected to a driven sweeping arm and in which another chord of the frame is hinged at least on an end section of the main yoke, characterized in that that the main stirrup (14 or 114) is constituted as a cover for   other frames of the frame (28, 30).   5) Sweeping device according to claim 4, characterized in that the cover (36, 38, 40) is formed in one piece on the stirrup principal (14).   6) Sweeping device according to claim 4, characterized in that the cover (114, 120, 122) consists of several parts and the other cover parts (120, 122 are connected, preferably snapped, to the main stirrup (114) or partial recovery (136, 138) formed by it.   7) A scanning device according to claim 6, characterized in that the main yoke (114) is manufactured together with its metal covering part (136, 138, 140) and the other parts ( 120, 122) are made of plastic.   8) A scanning device according to claim 7, characterized in that the main yoke (114), having a U-shaped end section in cross-section, has aligned bores in its U-branches (20, 21). with each other, which serve to receive latching eyelets (146, 148), which are formed on the   other cover portions (120, 122).   9) Scanning device according to claim 8, characterized in that the other cover portions (120, 122) are formed in the region of the U-shaped latching eyes (146, 148) and are adapted for their measured external measurement from branch to branch to the internal measurement between the legs (20, 21) of the U of the main yoke (114) and that the latching eyelets (146, 148) are arranged on the sides   external branches of the U (142, 144).   10) Sweeping device according to claim 9, characterized in that the legs of the U (142, 144) of the covering parts (120, 122) can be pressed elastically in the area of   latching eyelets (146, 148).   11) Scanning device according to one of   claims 9 or 10, characterized in that the   latching eyelets (146, 148) are pierced by aligned rolling bores, which serve to receive a frame pin (150), which carries   hinged another frame member (28).