Wiper blade element for a motor vehicle, having a large contact surface

Abstract

The invention relates to a novel form of wiper blade (1) having an increased size such that, for each straight 1 millimeter of the wiper blade (1) measured along the longitudinally extending axis (X), the surface area of the pressing surface (10) against which the wiper blade (1) presses against the glass surface (SV) is greater than 0.25 mm 2 Furthermore, the wiper blade (1) comprises a solid body (12) configured to enable a hinge-less connection to a wiper blade support element, and a pressing body (13) in the form of a continuous or discontinuous structure. Thus, the pressing body (13) comprises microstructures and macrostructures (131) that make the pressing surface (10) complex and discontinuous, giving it a larger surface area than known wiper blades.

Description

Technical Field

[0001] The technical background of the present invention is that of a wiper blade for a wiper. More specifically, the invention relates to a large-area wiper blade.

Summary of the Invention

[0002] Prior Art As is known, a motor vehicle comprises a wiping system capable of cleaning and / or wiping a glass wall of the motor vehicle, such as a windshield. Such a wiping system comprises one or two wipers which are articulated and which press a wiper blade against a glazed surface and rub it so as to remove the moisture and / or particles present on its surface.

[0003] As is known, such wiper blades have a pointed outer shape so as to provide a reduced area of contact with the glazed surface. This conventional configuration is very widespread because it can provide effective scraping while reducing friction, noise and wear of the wiper blade. Generally, the contact surface of a known wiper blade has a width of 100 μm or less, and more preferably 50 μm or less, measured along a transverse extension axis perpendicular to the longitudinal extension axis of the wiper blade, which is considered the longest dimension of the wiper blade. Thus, known wiper blades have a contact surface for contact with the glazed surface in the form of a very thin continuous line.

[0004] One known drawback of these known wiper blades is that, in order to ensure an optimal effect, the contact surface needs to have a sharp, well-defined outer shape without defects and without geometrical irregularities along the longitudinal extension axis. Thus, such known wiper blades have a complex shape leading to more stringent manufacturing methods in order to ensure that the expected geometrical tolerances are met.

[0005] Furthermore, when attached to a wiping system, such known wiper blades are generally attached to a hinge extending along a longitudinally extending axis so as to enable the wiper blade to pivot in accordance with the direction in which it is moved across the glass surface. The hinge is generally obtained by a thin neck forming the hinge at an upper end which is an end opposite the contact surface.

[0006] Accordingly, it will be appreciated that the wiper blade has a particularly complex shape which leads to high manufacturing and sales costs.

[0007] In particular, the hinge is a particularly fragile zone due to its thinness; thus the hinge has a tendency to crack over time due to the influence of ultraviolet light and other environmental factors even if it is not used.

[0008] Furthermore, such wiper blades have other drawbacks related to their operation and to the reverse mechanics caused by the wiping system to which they are related. In particular, the friction in the elongated contact surface of these wiper blades leads to premature wear and undesirable operating noise.

[0009] Furthermore, when such a wiping system is stationary, they permanently load the wiper blade as a result of both the frictional force between the glass surface and the wiper blade and the pressure applied to the glass surface by the arm of the wiping system. Here too, the thinned shape of its contact surface for contact with the glass surface of the wiper blade and the thinness of the hinge result in early aging and permanent deformation, which over time reduces the performance of the wiper blade.

[0010] One object of the present invention is to propose a new wiper blade in order to address at least most of the aforementioned problems and to provide further advantages.

[0011] Another object of the invention is to reduce the aging deterioration of the wiper blade when the wiping system is stationary.

[0012] Another object of the invention is to reduce wear, simplify manufacturing, and reduce manufacturing costs.

[0013] Another object of the invention is to reduce the noise generated by the wiper blade during operation, particularly at the moment of direction change on the glass surface.

[0014] Another object of the invention is to improve the quality of contact between the wiper blade and the glass surface.

[0015] Summary of the Invention According to a first aspect of the invention, at least one of the aforementioned objects is achieved by a wiper blade for a motor vehicle wiper, the wiper blade forming a profile body extending along a longitudinally extending axis, the profile body including a pressing surface intended to be brought into contact with the glass surface of the motor vehicle, the pressing surface having a surface area greater than 0.10 mm, preferably greater than 0.25 mm, per linear millimeter of the profile body measured along the longitudinally extending axis. 2 Greater, preferably 0.25 mm 2 Greater and having a surface area.

[0016] In the context of the present invention, the wiper blade is made of a synthetic or natural material that exhibits both good elasticity and good resistance to tearing or wear. As a non-limiting example, the material from which the wiper blade is made includes rubber and / or plastic.

[0017] In the context of the present invention, the wiper blade is made of a single material or a plurality of materials.

[0018] In the context of the present invention, the wiper blade is preferably monolithic, i.e., formed as a single piece, such that it need not be broken or damaged to separate a portion of the wiper blade from the other.

[0019] The wiper blade according to the first aspect of the invention is preferably made by molding. Alternatively, the wiper blade according to the first aspect of the invention is made using extrusion molding.

[0020] In the context of the present invention, the profile body of the wiper blade forms a profile extending along a longitudinally extending axis having a constant or variable shape.

[0021] In the context of the present invention, the pressing surface is located at the lower end of the profile body, and the end of the profile body is intended to contact the glass surface. The pressing surface corresponds to the surface of the wiper blade that scrapes and / or wipes the glass surface. The pressing surface extends along the longitudinally extending axis of the profile body of the wiper blade.

[0022] In the context of the present invention, the wiper blade is suitable for use on large or small sizes, flat or curved surfaces, and any type of glass surface. By way of example, the glass surface may in particular be selected from among the following:

[0023] - The front windshield of a motor vehicle, or more generally, any glass surface of a motor vehicle such as, for example, a side window or a rear screen window; and / or

[0024] - The optical surface of a sensor, particularly such as LIDAR; and / or

[0025] - The outer lens surrounding the front headlamp of a motor vehicle.

[0026] In the context of the present invention, the following reference axes for the wiper blade are defined:

[0027] - A longitudinal extension axis corresponding to the main extension direction of the wiper blade. The longitudinal extension axis extends between two lateral edges of the wiper blade. The longitudinal extension axis corresponds in particular to the longest dimension of the pressing surface for pressing against the wiper blade and / or the glass surface;

[0028] - A lateral extension axis extending perpendicular to the longitudinal extension axis between the front longitudinal edge and the rear longitudinal edge of the wiper blade;

[0029] - A vertical extension axis extending perpendicular to both the longitudinal extension axis and the lateral extension axis. The vertical extension axis extends in a direction of the pressing surface orthogonal to the longitudinal extension axis between the pressing surface and the upper edge of the wiper blade.

[0030] Thus, the wiper blade according to the first aspect of the invention exhibits a pressing surface for pressing against a glass surface that is significantly larger than that of a known wiper blade. Instead of having a thinned profile in the form of a continuous filament, the wiper blade according to the first aspect of the invention has a large-area pressing surface with a unit surface area per linear millimeter of the wiper blade measured along the longitudinal extension axis of greater than 0.25 mm 2 greater. In other words, for each linear millimeter of the wiper blade measured along the longitudinal extension axis, the wiper blade according to the first aspect of the invention has a surface area of 0.25 mm 2 on its pressing surface for pressing against the glass surface.

[0031] For comparison, a known wiper blade having a thinned profile provides a surface area of 0.1 mm or less per linear millimeter of the pressing surface measured with respect to the longitudinal extension axis of the wiper blade. 2 per linear millimeter.

[0032] As a result, the wiper blade thus has a larger pressing surface and, therefore, improves the scraping and cleaning properties of the wiper blade according to the first aspect of the invention.

[0033] Furthermore, due to its large proportion, the wiper blade according to the first aspect of the invention is more rigid and less affected by permanent deformation caused by the static load applied to the wiper blade by the wiping system when the wiping system is stationary.

[0034] The wiper blade according to the first aspect of the invention is intended to be mounted on a hingeless wiper. Rather, the wiper blade according to the first aspect of the invention can be configured to be directly engaged and attached to one or more spinal strips of the wiper by means of central spinal strips that function as the central core of the wiper or by means of two lateral spinal strips extending longitudinally along the lateral edges of the wiper blade.

[0035] The wiper blade according to the first aspect of the invention advantageously includes at least one of the following improvements, and the technical features constituting these improvements can be considered alone or in combination:

[0036] - The profile body comprises (i) a solid body intended to be fixed to at least one spiral strip of the wiper, and (ii) a pressing body located in the continuity of the solid body with respect to a vertical extending axis extending in the direction of a pressing surface perpendicular to the longitudinal extending axis. The pressing surface is formed by the free end of the pressing body distal from the solid body. In the context of the present invention, both the solid body and the pressing body extend along the longitudinal extending axis of the wiper blade according to the first aspect of the invention. The solid body is intended to enable fixing the wiper blade to the wiper. The pressing body is located in the continuity of the solid body. The pressing body is configured to provide a specific shape, continuous or discontinuous, regular or irregular, to the pressing surface, as further described below;

[0037] - The width of the wiper blade measured at the pressing body exceeds 500 μm;

[0038] - According to the first embodiment, the pressing surface is continuous simultaneously with respect to the longitudinal extending axis and with respect to a transverse extending axis perpendicular to the longitudinal extending axis. In this embodiment, the wiper blade according to the first aspect of the invention forms a monolithic assembly having a contact surface that covers the glass surface and extends over a wide area, rather than a thin linear contact as in known wiper blades. Here, the contact surface is much larger;

[0039] - According to the second embodiment, the pressing surface is continuous only with respect to the longitudinal extending axis. In this embodiment, the wiper blade according to the first aspect of the invention has one or more continuous profiles extending along the longitudinal extending axis of the wiper blade, and each profile is spaced apart from the directly adjacent profile;

[0040] - According to the third embodiment, the pressing surface is continuous only with respect to the laterally extending axis, and the laterally extending axis is perpendicular to the longitudinally extending axis. In this embodiment, the wiper blade according to the first aspect of the invention has one or more continuous profiles extending along the laterally extending axis of the wiper blade, and each profile is spaced apart from the directly adjacent profile;

[0041] - Generally, according to the fourth embodiment, the pressing surface is discontinuous with respect to the longitudinally extending axis and / or with respect to the laterally extending axis perpendicular to the longitudinally extending axis, and the pressing body of the wiper blade includes a plurality of macrostructures, and each macrostructure is spaced apart from the other directly adjacent macrostructures. The macrostructure takes the form of a solid body or a protrusion extending from the pressing body. The macrostructure is formed integrally with the pressing body;

[0042] - Each macrostructure has a height of less than 500 μm, preferably less than 200 μm, more preferably less than 100 μm, measured along the vertically extending axis of the wiper blade, and the vertically extending axis is simultaneously perpendicular to the longitudinally extending axis and the laterally extending axis. The height of each macrostructure is measured between the bases of the macrostructures and is measured from the solid body or from the pressing body from which it extends. Advantageously, the height of each macrostructure is greater than 1 μm;

[0043] - Each macrostructure has a width of 1 μm to 500 μm measured along the laterally extending axis or along the longitudinally extending axis;

[0044] - Each macrostructure takes the form of a prismatic span that extends from a solid body and forms a pressing body. Each macrostructure takes the form of, for example, a cylindrical stud, a parallelepiped stud, a spherical or hemispherical stud, or a stud of any shape. Advantageously, the pressing body comprises a plurality of macrostructures that form a regular or irregular tiling pattern. In other words, the macrostructures forming the solid body can each represent one tile, and together they form the tile pattern of the pressing body, maximizing the pressing surface while simultaneously obtaining benefits from the discontinuous pressing surface to better remove the water wiped off the glass surface by the wiper blade according to the first aspect of the invention;

[0045] - The distance between two adjacent macrostructures measured along the laterally extending axis or the longitudinally extending axis is 1 μm to 100 μm;

[0046] - According to a modification of the first embodiment, the pressing body exhibits an isotropic density of macrostructures along the wiper blade. In this modification of the first embodiment, the macrostructures are uniformly distributed with respect to the longitudinally extending axis and / or the laterally extending axis of the wiper blade. In other words, the macrostructures exhibit the same distribution, the same dimensions, the same surface area, or the same density at several points with respect to the longitudinally extending axis and / or the laterally extending axis of the wiper blade;

[0047] - The macrostructures are distributed uniformly along the wiper blade with respect to the longitudinally extending axis and / or the laterally extending axis;

[0048] - The macrostructures form a periodic arrangement along the wiper blade;

[0049] - The macrostructures are distributed in a pentagonal structure along the wiper blade;

[0050] - According to a modified example of the second embodiment, which is an alternative to the modified example of the first embodiment, the pressing body exhibits anisotropic density of the macrostructure along the wiper blade. In this modified example of the second embodiment, the macrostructures are unevenly distributed with respect to the longitudinal extension axis of the wiper blade and / or the transverse extension axis of the wiper blade. In other words, the macrostructures vary in terms of number, dimension, surface area, or density with respect to the longitudinal extension axis of the wiper blade and / or the transverse extension axis of the wiper blade. Therefore, with this advantageous configuration, it is possible to provide different mechanical properties and / or pressing properties and / or sliding properties and / or friction properties according to the position of the macrostructures on the wiper blade, and thus ultimately improve the wiping performance of the wiper blade according to the first aspect of the invention;

[0051] - In particular, the density of the macrostructure is minimized in the central region of the pressing body with respect to the transverse extension axis. In other words, the density of the macrostructure is maximized in the transverse region of the pressing body, and that region is located away from the longitudinal extension axis. Generally, the macrostructures considered in the transverse region of the pressing body exhibit a higher density than the density of the said macrostructures considered in the central region of the pressing body.

[0052] - The macrostructures form a linear pattern along the wiper blade and along the pressing body;

[0053] - The macrostructures form a non-linear pattern along the wiper blade and along the pressing body;

[0054] - The macrostructures form a curved pattern along the wiper blade and along the pressing body;

[0055] - The macrostructures form fractal patterns along the wiper blade and along the pressing body;

[0056] - The pressing body is provided with a rainwater removal channel for removing rainwater scraped off by the wiper blade on the pressing surface, and the removal channel is formed by macrostructures spaced apart from each other. In particular, the removal channel is directed towards the rear edge of the wiper blade;

[0057] - The removal channel has a V-shaped or U-shaped cross-sectional shape that opens onto the pressing surface of the wiper blade. As a non-limiting example, the removal channel is formed by grooves present in the pressing body and / or between the macrostructures;

[0058] - To improve the interaction between the pressing surface of the wiper blade and the glass surface, in particular the sliding of said surfaces, the pressing body has a texturing of the pressing surface. In the context of the present invention, the texturing takes the form of a microstructure superimposed on the pressing body on the pressing surface. When the pressing body has macrostructures, the texturing is formed at the free ends of said macrostructures, and the free ends form the pressing surface of the wiper blade according to the invention. The dimensions of the texturing are smaller than the dimensions of the macrostructures. The texturing of the pressing surface exhibits a height variation of less than 50 μm measured along a vertically extending axis. More specifically, the texturing has a roughness Ra of less than 1 μm;

[0059] - The texturing of the pressing surface is obtained, for example, by molding, by laser etching, by chemical attack, or by photoetching;

[0060] ]>- To improve the interaction between the pressing surface of the wiper blade and the glass surface, in particular the sliding of said surfaces, the pressing body of the wiper blade according to the invention has a surface treatment on the pressing surface. In the context of the present invention, the surface treatment takes the form of a thin layer of material deposited on the pressing surface of the wiper blade. In particular, the treatment of the pressing surface includes a material deposited to a thickness of 2 μm to 15 μm, preferably equal to 10 μm;

[0061] - The material deposited to form the surface coating includes a graphite-containing paint. Alternatively, the surface treatment is obtained through a liquid process to over-polymerize the material used for the pressing body.

[0062] The second aspect of the invention proposes a wiper comprising:

[0063] - A wiper blade according to either the first aspect of the invention or any one of its improvements; and

[0064] - A support element to which the wiper blade is fixed via at least one spiral strip.

[0065] In the context of the present invention, the wiper can be of any size so as to cooperate, for example, with a large-sized glass surface such as the front windshield or rear screen window of a motor vehicle, or with a smaller-sized glass surface such as the optical surface of a LIDAR-type sensor or the outer lens surrounding the tail light or front headlamp of a motor vehicle.

[0066] Particularly ingenious is that the wiper blade is connected to the support element without a hinge; the wiper blade is directly fixed to the support element by a mechanical connection that does not allow freedom during the use of the wiper. In other words, the wiper blade according to the first aspect of the invention is fixedly attached to the support element rather than being articulated.

[0067] The connection of the wiper blade according to the first aspect of the invention to the support element is provided by at least one spiral strip. In the context of the invention, each spiral strip takes the form of an elongated body extending along the wiper blade, more particularly in its profile body or solid body. At least one spiral strip is preferably fixed to the solid body of the wiper blade.

[0068] In the context of the present invention, according to a variant of the first embodiment, the connection to the support element of the wiper blade is provided by a single spiral strip fixed to the upper surface of the solid body. According to a variant of the second embodiment, the connection to the support element of the wiper blade is provided by two spiral strips each fixed to one of the lateral edges of the wiper blade, each lateral edge extending along the longitudinal extension axis of the wiper blade.

[0069] A third aspect of the invention proposes a wiping system for the glass surface of a motor vehicle, the wiping system comprising:

[0070] - a wiper according to the second aspect of the invention, intended to be brought into contact with the glass surface;

[0071] - a wiper arm configured to drive the rotational and / or translational movement of the wiper;

[0072] - a connecting device configured to securely fix the wiper to the wiper arm.

[0073] Particularly ingeniously, the connecting device establishes a connection without any degree of freedom between the wiper and the wiper arm. In other words, the wiper is fixedly attached to the wiper arm rather than being articulated.

[0074] In the context of the present invention, and as mentioned above here, the glass surface may be of the motor vehicle front windshield type, and more generally, may be any glass surface of a motor vehicle, such as, for example, a side window or a rear screen window; and / or may be the optical surface of a sensor, particularly LIDAR; and / or may be the outer lens surrounding the front headlamp of a motor vehicle.

[0075] A fourth aspect of the invention proposes a motor vehicle comprising the wiping system according to the third aspect of the invention.

[0076] Various embodiments of the invention incorporating all possible combinations of the features of the various options described herein are foreseeable.

Brief Description of the Drawings

[0077] Further features and advantages of the invention will become apparent from the following description and from the plurality of exemplary embodiments shown, without limitation, with reference to the accompanying schematic drawings:

[0078]

Figure 1

[0079]

Figure 2

[0080]

Figure 3

[0081]

Figure 4

[0082]

Figure 5

[0083]

Figure 6

Modes for Carrying Out the Invention

[0084] Detailed Description Of course, the features, modifications, and various embodiments of the invention can be combined with each other in various combinations, provided that they are not incompatible or mutually exclusive. In particular, a variant of the invention that includes only a selection of some of the features described below, separated from other described features, is also conceivable if this selection of features is sufficient to confer a technical advantage or to distinguish the invention from the prior art.

[0085] In particular, all the described variants and all the embodiments can be combined with each other provided that there is nothing from a technical point of view preventing such a combination.

[0086] In the drawings, elements common to multiple drawings are given the same reference numerals.

[0087] In the figures described below, with respect to the wiper blade 1 according to the first aspect of the invention, the following reference axes are defined:

[0088] - A longitudinal extension axis X corresponding to the main direction of extension of the wiper blade 1. The longitudinal extension axis X extends between the two lateral edges 113 of the wiper blade 1. The longitudinal extension axis X corresponds in particular to the longest dimension of the pressing surface 10 for pressing against the wiper blade 1 and / or the glass surface SV;

[0089] - A transverse extension axis Y extending perpendicular to the longitudinal extension axis X between the front longitudinal edge 112 and the rear longitudinal edge 112 of the wiper blade 1;

[0090] - A vertical extension axis Z extending perpendicular to both the longitudinal extension axis X and the transverse extension axis Y. The vertical extension axis Z extends from the upper surface 111 of the wiper blade 1 in the direction of the pressing surface 10 perpendicular to the longitudinal extension axis X, between the pressing surface 10 and the upper edge of the wiper blade 1.

[0091] Figures 1 to 4 each illustrate an embodiment of the wiper blade 1 according to the invention and depict a cut-away perspective view of such a wiper blade 1.

[0092] A wiper blade 1 for a motor vehicle wiper 2, the wiper blade 1 forms a profile body 11 extending along a longitudinally extending axis X, and the profile body 11 includes a pressing surface 10 intended to be brought into contact with the glass surface SV of the motor vehicle. The pressing surface 10 has a surface area greater than 0.25 mm per linear millimeter of the profile body 11 measured along the longitudinally extending axis X. 2 The wiper blade 1 having a larger surface area.

[0093] In FIGS. 1 to 4, the glass surface SV is drawn as a dotted line.

[0094] In FIGS. 1 to 4, the illustrated profile body 11 of the embodiment has a rectangular cross-section and takes the shape of a parallelepiped extending along the longitudinally extending axis X. Of course, in the context of the invention, the profile body 11 of the wiper blade 1 can have any shape. In particular, the profile body 11 may have the same cross-section at all points along the longitudinally extending axis X, or it may have a cross-section that can vary along the longitudinally extending axis X.

[0095] In the embodiment shown in FIGS. 1 to 4, the pressing surface 10 is located at the lower end of the profile body 11, and this end is intended to be brought into contact with the glass surface SV. The pressing surface 10 corresponds to the surface of the wiper blade 1 that scrapes and / or wipes the glass surface SV. The pressing surface 10 extends simultaneously along the longitudinally extending axis X and along the laterally extending axis Y. Therefore, according to the invention, the pressing surface 10 is much larger in the wiper blade 1 according to the invention than in known wiper blades.

[0096] For this purpose, in the embodiment shown in FIGS. 1 to 4, the profile body 11 forming the wiper blade 1 includes the following:

[0097] - A solid body 12 intended to be fixed to at least one spiral strip of the wiper 2. The solid body 12 is intended to enable the wiper blade 1 to be fixed to one or more spiral strips so that the wiper blade 1 can be attached to the wiper 2. The solid body 12 extends along a longitudinally extending axis X, preferably with a non-changing profile. The width of the wiper blade 1 measured by the pressing body 13 is preferably greater than 500 μm measured along the laterally extending axis Y; and

[0098] - A pressing body 13 located in the continuity of the solid body 12 with respect to a vertically extending axis Z extending in the direction of the pressing surface 10 perpendicular to the longitudinally extending axis X, wherein the pressing surface 10 is formed by the free end of the pressing body 13 distal from the solid body 12. The pressing body 13 may extend along the longitudinally extending axis X and along the laterally extending axis Y with a profile that may not deform as depicted in FIGS. 2 to 4 or with a profile that may be variable as depicted in FIG. 5.

[0099] For this purpose, in the embodiment shown in FIGS. 2 to 4, the pressing body 13 takes the form of a profile having a constant cross-section along the longitudinal axis:

[0100] - In the embodiment shown in FIG. 2, the pressing body 13 takes the form of a circular or semi-circular profile extending along the longitudinally extending axis X;

[0101] - In the embodiment shown in FIG. 3, the pressing body 13 takes the form of a rectangular or polygonal profile extending along the longitudinally extending axis X;

[0102] - In the embodiment shown in FIG. 4, the pressing body 13 takes the form of a regular or irregular sawtooth profile extending along the longitudinally extending axis X.

[0103] In contrast, the embodiment shown in FIG. 5 shows a pressing body 13 having a shape that is discontinuous along both the vertically extending axis and the horizontally extending axis Y.

[0104] The cross-section is considered in a plane formed by the horizontally extending axis Y and the vertically extending axis Z.

[0105] The end portion of the pressing body 13 considered along the vertically extending axis Z forms a pressing surface 10 that presses against the glass surface SV, that is, against the surface of the wiper blade 1 that cooperates with the glass surface SV for wiping and / or scraping.

[0106] Particularly advantageously, the wiper blade 1 according to the invention has a structure and a specific shape along the vertically extending axis Z. Thus, as described above, the wiper blade 1 comprises a solid body 12 and a pressing body 13. Further, the pressing body 13 comprises a plurality of macrostructures 131, and each macrostructure 131 is spaced apart from other directly adjacent macrostructures 131 along the longitudinally extending axis X and / or along the horizontally extending axis Y.

[0107] The macrostructures 131 take the form of protrusions extending along the vertically extending axis Z from the solid body 12 or the pressing body 13.

[0108] Each macrostructure 131 has a height of 1 μm to 100 μm measured along the vertically extending axis Z of the wiper blade 1, and / or has a width of 1 μm to 500 μm measured along the horizontally extending axis Y or along the longitudinally extending axis X;

[0109] Each macrostructure 131 takes the form of a span extending along the vertically extending axis Z in any variable or invariable shape along the longitudinally extending axis X and / or along the horizontally extending axis Y. The free end of each macrostructure 131 distal from the solid body 12 forms the pressing surface 10 of the wiper blade 1 according to the invention.

[0110] In the embodiment shown in FIG. 2, the macrostructure 131 forming the pressing body 13 takes the form of a circular or semi-circular profile extending along the longitudinal extension axis X. Accordingly, each macrostructure 131 takes the form of a cylindrical or semi-cylindrical span extending along the longitudinal extension axis X, and each macrostructure 131 is arranged at an interval from the directly adjacent macrostructure 131 along the transverse extension axis Y. The dimension and / or distance between two adjacent macrostructures 131 along the transverse extension axis Y may be constant or variable depending on the position of the corresponding macrostructure 131 with respect to the longitudinal extension axis X.

[0111] In the embodiment shown in FIG. 3, the macrostructure 131 forming the pressing body 13 takes the form of a rectangular profile extending along the longitudinal extension axis X. Accordingly, each macrostructure 131 takes the form of a prismatic span extending along the longitudinal extension axis X, and each macrostructure 131 is arranged at an interval from the directly adjacent macrostructure 131 along the transverse extension axis Y. The dimension and / or distance between two adjacent macrostructures 131 along the transverse extension axis Y may be constant or variable depending on the position of the corresponding macrostructure 131 with respect to the longitudinal extension axis X.

[0112] In the embodiment shown in FIG. 5, the macrostructure 131 forming the pressing body 13 takes the form of a rectangular stud separated from the directly adjacent studs along the longitudinal extension axis X or the transverse extension axis Y. The macrostructures 131 forming the solid body 12 thus form a regular or irregular two-dimensional array so as to maximize the area of the pressing surface 10 and to better remove the water wiped on the glass surface SV by the wiper blade 1 according to the invention.

[0113] In the example shown in FIG. 5, the distance between two adjacent macrostructures 131 measured along the transverse extension axis Y or the longitudinal extension axis X is 1 μm to 1000 μm (1 mm).

[0114] Generally, the macrostructures 131 can be distributed regularly or irregularly along the wiper blade 1, depending on the effects required, particularly from the viewpoints of frictional force, heating, wear, wiping ability, or the ability to remove rainwater present on the glass surface SV. In particular, the macrostructures 131 forming the pressing body 13 may show variations in terms of the number and / or dimensions and / or surface area and / or density with respect to the longitudinal extension axis X and / or the transverse extension axis Y of the wiper blade 1, or the macrostructures 131 forming the pressing body 13 may be invariant in terms of the dimensions and / or surface area and / or density with respect to the longitudinal extension axis X and / or the transverse extension axis Y of the wiper blade 1.

[0115] In the embodiment shown in FIG. 5, the macrostructures 131 are spaced apart from each other such that the pressing body 13 has a rainwater removal channel 132 for removing the rainwater scraped off by the pressing surface 10 of the wiper blade 1 pressing on the glass surface SV. The removal channels 132 are formed by the macrostructures 131 spaced apart from each other. The removal channels 132 have a V-shaped or U-shaped cross-sectional shape opening to the pressing surface 10 of the wiper blade 1.

[0116] Finally, in order to improve the interaction between the pressing surface 10 of the wiper blade 1 and the glass surface SV, particularly the sliding of said surfaces, the pressing body 13 has the following:

[0117] - A texturing 14 of the pressing surface 10, which takes the form of a fine structure superimposed on the pressing surface 10, particularly on the macrostructures 131, on the pressing body 13. The dimensions of the texturing 14 are smaller than those of the macrostructures 131. The texturing 14 of the pressing surface 10 shows a height variation of less than 50 μm measured along the vertically extending axis Z. More specifically, the texturing 14 has a roughness Ra of less than 1 μm; and / or

[0118] - A surface treatment including a thin layer of material deposited on the pressing surface 10 of the wiper blade 1. In particular, the treatment of the pressing surface 10 includes a material deposited to a thickness of 2 μm to 15 μm, preferably 10 μm. The deposited material forming the surface coating includes a graphite-containing paint.

[0119] As shown in FIG. 5, the texturing 14 of the pressing surface 10 can take a number of different forms within the context of the invention. In particular, it can take the form of an arrangement of one-dimensional or two-dimensional crenellations forming ridges that are inclined or upright with respect to the longitudinally extending axis X and / or the laterally extending axis Y and / or the vertically extending axis Z. Also, the texturing 14 can take the form of a maze-like structure or a microtile-like structure forming a complex shape. The technical effect of these microstructures is that they increase the surface area of the pressing surface 10, leading to better removal of scraped-off rainwater and providing removal channels 132 on the pressing surface 10.

[0120] As shown in FIG. 6, the invention also relates to a wiper 2 comprising:

[0121] - The wiper blade 1 described above here; and

[0122] - A support element 21 to which the wiper blade 1 is fixed via at least a single spiral strip.

[0123] Particularly ingeniously, the wiper blade 1 is connected to the support element 21 without a hinge: the wiper blade 1 is directly fixed to the support element 21 via a mechanical connection that does not allow freedom during the use of the wiper 2, and the wiper blade 1 is fixedly attached to the support element 21 rather than being articulated.

[0124] In summary, for each 1 millimeter of straight line of the wiper blade 1 measured along the longitudinally extending axis X, the invention has a surface area of the pressing surface 10 of 0.25 mm 2Regarding a novel form of wiper blade 1 with increased dimensions so as to be larger, the wiper blade 1 is pressed against the glass surface SV via the pressing surface 10. Further, the wiper blade 1 includes a solid body 12 configured to enable a hinge-less connection to the support element 21 of the wiper 2, and a pressing body 13 that takes the form of a continuous structure or a discontinuous structure. Thus, the pressing body 13 includes a micro-structure and a macro-structure body 131 that make the pressing surface 10 complex and discontinuous, and gives it a larger surface area than known wiper blades.

[0125] Of course, the invention is not limited to the examples described herein, and numerous changes can be made to these examples without departing from the scope of the invention. In particular, the various features, forms, variations, and embodiments of the invention can be combined with each other in various combinations as long as they are not mutually incompatible or mutually exclusive. In particular, all of the variations and embodiments described above can be combined with each other.

Claims

1. A wiper blade (1) for a motor vehicle wiper (2), wherein the wiper blade (1) forms a profile body (11) extending along a longitudinally extending axis (X), the profile body (11) having a pressing surface (10) intended to be brought into contact with the glass surface (SV) of the motor vehicle, the pressing surface (10) having a surface area greater than 0.10 mm ２ per millimeter of straight line of the profile body (11) measured along the longitudinally extending axis (X), preferably greater than 0.25 mm ２ A wiper blade (1) for a motor vehicle wiper (2), characterized by having a surface area greater than that.

2. The profile body (11) comprises: - A solid body (12) intended to be fixed to at least one spiral strip of the wiper (2); and - A pressing body (13) located in the continuity of the solid body (12) with respect to a vertical direction extending axis (Z) extending in the direction of the pressing surface (10) perpendicular to the longitudinal direction extending axis (X), the pressing surface (10) being formed by the free end of the pressing body (13) distal from the solid body (12). The wiper blade (1) according to claim 1, comprising the above.

3. The wiper blade (1) according to claim 2, wherein the pressing surface (10) is continuous simultaneously with respect to the longitudinal direction extending axis (X) and with respect to a transverse direction extending axis (Y) perpendicular to the longitudinal direction extending axis (X).

4. The wiper blade (1) according to claim 2, wherein the pressing surface (10) is discontinuous with respect to the longitudinal direction extending axis (X) and / or with respect to a transverse direction extending axis (Y) perpendicular to the longitudinal direction extending axis (X), and the pressing body (13) of the wiper blade (1) comprises a plurality of macrostructures (131), each macrostructure (131) being spaced apart from other directly adjacent macrostructures (131).

5. The wiper blade (1) according to claim 4, wherein each macrostructure (131) has a width of 1 μm to 500 μm measured along the transverse direction extending axis (Y) or along the longitudinal direction extending axis (X).

6. The wiper blade (1) according to any one of claims 4 and 5, wherein the pressing body (13) exhibits an isotropic density of the macrostructures (131) along the wiper blade (1).

7. The wiper blade (1) according to any one of claims 4 to 6, wherein the pressing body (13) comprises a rainwater removal channel (132) for removing rainwater scraped by the wiper blade (1) on the pressing surface (10), the removal channel (132) being formed by macrostructures (131) spaced apart from each other.

8. The wiper blade (1) according to claim 7, wherein the pressing body (13) has a texturing (14) of the pressing surface (10).

9. - The wiper blade (1) according to any one of claims 1 to 8; and - A support element (21) to which the wiper blade (1) is fixed via at least one spiral strip, A wiper (2) comprising the same.

10. A wiping system (3) for wiping a glass surface (SV) of a motor vehicle, the wiping system (3) comprising: - The wiper (2) according to claim 9, which is intended to be brought into contact with the glass surface (SV); - A wiper arm configured to drive the rotation of the wiper (2); - A connecting device (31) configured to firmly fix the wiper (2) to the wiper arm, A wiping system (3) comprising the same.

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