Wiper blade element with large contact surface for motor vehicle

Abstract

The invention relates to a wiper blade (1) of a novel form having an increased size such that the surface area of the pressing surface (10) of the wiper blade (1) pressed against the glazing surface (SV) is greater than 0.25 mm2 per linear millimeter of the wiper blade (1) measured along the longitudinal extension axis (X). Furthermore, the wiper blade (1) comprises a solid body (12) configured to allow a hinge-free connection with the supporting element of the wiper blade, and a pressing body (13) in the form of a continuous or discontinuous structure. Thus, the pressing body (13) comprises macrostructures (131) and microstructures, which make the pressing surface (10) complex and discontinuous and make it have 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 particularly, the present invention relates to a large-area wiper blade. Background Art

[0002] As is known, motor vehicles are equipped with wiping systems that are capable of washing and / or wiping the glass walls of the motor vehicle, such as windshields. Such wiping systems comprise one or two wipers that are hinged and allow the wiper blades to press against the glass surface to scrape the glass surface in order to remove water and / or particles present on its surface.

[0003] As is known, such wiper blades have a pointed profile so as to present a reduced contact area with the glazing surface. This conventional configuration is very widespread since it enables effective scraping while reducing friction, noise and wear of the wiper blade. Typically, the contact surface of the known wiper blades has a width less than or equal to 100 μm or even less than 50 μm measured along a transverse axis of extension, perpendicular to the longitudinal axis of extension of the wiper blade, considered to be the longest dimension of said wiper blade. Thus, the known wiper blades have a contact surface for contact with the glazing surface which takes the form of a very thin continuous line.

[0004] A known disadvantage of these known wiper blades is that, in order to ensure optimal effectiveness, the contact surface needs to have a clearly defined contour without defects and without geometric irregularities along the longitudinal axis of extension. Therefore, such known wiper blades have complex geometries which lead to more demanding manufacturing methods in order to ensure that the expected geometric tolerances are met.

[0005] Furthermore, when mounted on a wiping system, such known wiper blades are usually mounted on a hinge extending along a longitudinal axis of elongation to allow said wiper blade to pivot according to the direction in which it moves on the glazing surface. The hinge is usually obtained by forming a thinned neck of said hinge at the upper end, which is the end opposite to the contact surface.

[0006] It will thus be appreciated that the wiper blade has a particularly complex geometry, which leads to high manufacturing and marketing costs.

[0007] In particular, the hinge is a particularly vulnerable area due to its elongation; thus, due to the effects of UV radiation and other environmental agents, the hinge has a tendency to tear over time, even when not in use.

[0008] In addition, such wiper blades present other disadvantages associated with their operation and the reversal dynamics imposed by the wiping system associated with them. In particular, the friction of these wiper blades at the elongated contact surface causes premature wear and causes undesirable operating noise.

[0009] In addition, when such wiping systems are stationary, they exert a permanent load on the wiper blade both due to the friction between the glazing surface and the wiper blade and due to the pressure exerted by the arm of the wiping system pressed against the glazing surface. Here again, the thinned geometry of the wiper blade at its contact surface for contact with the glazing surface and the elongation of the hinge lead to premature aging and permanent deformations, which weaken the performance of the wiper blade over time.

[0010] An object of the present invention is to propose a new wiper blade in order to solve the aforementioned problems at least to a large extent and also to provide further advantages.

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

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

[0013] Another object of the present invention is to reduce the noise generated by the wiper blade when it is in operation, especially at the moment of changing direction on the glazed surface.

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

[0015] According to a first aspect of the invention, at least one of the above objects is achieved by a wiper blade for a motor vehicle wiper, the wiper blade forming a profiled body extending along a longitudinal axis of extension, the profiled body comprising a pressing face intended to come into contact against a glazed surface of a motor vehicle, the pressing face having a pressure of greater than 0.10 mm per linear millimeter of the profiled body measured along the longitudinal axis of extension. 2 , preferably greater than 0.25 mm 2 surface area.

[0016] In the context of the present invention, the wiper blade is made of a synthetic or natural material exhibiting good elasticity and good tear or abrasion resistance.By way of non-limiting example, the material from which the wiper blade is made comprises rubber and / or plastic.

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

[0018] In the context of the present invention, the wiper blade is preferably unitary, ie formed in one piece, so that it has to be broken or damaged in order to separate one part of the wiper blade from another part.

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

[0020] In the context of the invention, the profiled body of the wiper blade forms a profile which extends along the longitudinal axis of extension with a constant or variable geometry.

[0021] In the context of the present invention, the pressing surface is located at the lower end of the profiled body, which end is intended to come into contact with the glazing surface. The pressing surface corresponds to that side of the wiper blade that performs the scraping and / or wiping of the glazing surface. The pressing surface extends along the longitudinal axis of extension of the profiled body of the wiper blade.

[0022] In the context of the present invention, the wiper blade is suitable for use on any type of glazing surface (small or large, flat or curved). By way of illustration, the glazing surface can be selected in particular from the following:

[0023] - a windscreen of a motor vehicle, or more generally any glazed surface of a motor vehicle, such as a side window or rear screen; and / or

[0024] - optical surfaces of sensors (such as in particular LIDAR); and / or

[0025] - An outer lens surrounding a headlamp of a motor vehicle.

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

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

[0028] - a transverse axis of extension extending perpendicularly to the longitudinal axis of extension between the front and rear longitudinal edges of the wiper blade;

[0029] A vertical axis of extension extending perpendicularly to both the longitudinal axis of extension and the transverse axis of extension.The vertical axis of extension extends in a direction of the pressing face perpendicularly to the longitudinal axis of extension, between said pressing face and the upper edge of the wiper blade.

[0030] Thus, the wiper blade according to the first aspect of the invention presents a pressing surface for pressing against the glazing surface which is significantly larger than known wiper blades. Instead of having a thinned profile, the pressing surface taking the form of a continuous filament, the wiper blade according to the first aspect of the invention has a large-area pressing surface whose unit surface area per linear millimeter of the wiper blade measured along the longitudinal extension axis is greater than 0.25 mm 2 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 0.25 mm on its pressing surface for pressing against the glazing surface. 2 surface area.

[0031] By way of comparison, known wiper blades with a thinned profile provide a pressure reduction of less than or equal to 0.1 mm per linear millimeter of the pressing surface measured relative to the longitudinal extension axis of the wiper blade. 2 surface area.

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

[0033] Furthermore, due to its larger proportions, the wiper blade according to the first aspect of the invention is stiffer and less sensitive to the effects of permanent deformation caused by static loads applied to the wiper blade by the wiping system when the wiping system is at rest.

[0034] The wiper blade according to the first aspect of the invention is intended to be mounted on a wiper without hinges. More precisely, the wiper blade according to the first aspect of the invention is configured to be mountable in direct engagement with one or more spine strips of said wiper, either by means of a central spine strip acting as the central core of the wiper or by means of two transverse spine strips extending longitudinally along the transverse edges of the wiper blade.

[0035] The wiper blade according to the first aspect of the invention advantageously comprises at least one of the following improvements, the technical features constituting these improvements being able to be considered individually or in combination:

[0036] - The forming body comprises (i) a solid body intended to be fixed to at least one spinal strip of the wiper; and (ii) a pressing body located in the continuation of the solid body relative to a vertical axis of extension, the vertical axis of extension extending in a direction perpendicular to the longitudinal axis of extension of a pressing surface, the pressing surface being formed by a free end of the pressing body away from the solid body. In the context of the present invention, both the solid body and the pressing body extend along the longitudinal axis of extension of the wiper blade according to the first aspect of the invention. The solid body is intended to allow the wiper blade to be fixed to the wiper. The pressing body is located in the continuation of the solid body. The pressing body is configured to provide the pressing surface with a specific geometry, continuous or discontinuous, regular or irregular, as will be further described below;

[0037] - the width of the wiper blade measured at the pressing body is greater than 500 μm;

[0038] - According to a first embodiment, the pressing surface is continuous both relative to the longitudinal axis of extension and relative to a transverse axis of extension perpendicular to the longitudinal axis of extension. In this embodiment, the wiper blade according to the first aspect of the invention forms a one-piece entity at the pressing surface. In other words, the wiper blade here forms a monolithic component with a contact surface that is widely distributed on the surface of the pane, instead of a thin contact line as is present in known wiper blades. Here, the contact surface is much larger;

[0039] - According to a second embodiment, the pressing surface is continuous only with respect to the longitudinal extension 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 extension axis of the wiper blade, each profile being remote from the directly adjacent profile;

[0040] - According to a third embodiment, the pressing surface is continuous only with respect to a transverse axis of extension, which is perpendicular to the longitudinal axis of extension. In this embodiment, the wiper blade according to the first aspect of the invention has one or more continuous profiles extending along the transverse axis of extension of the wiper blade, each profile being remote from the directly adjacent profile;

[0041] - Generally, according to a fourth embodiment, the pressing surface is discontinuous relative to the longitudinal extension axis and / or relative to a transverse extension axis perpendicular thereto, the pressing body of the wiper blade comprising a plurality of macrostructures, each macrostructure being remote from the other directly adjacent macrostructures. The macrostructures are in the form of protrusions extending from a solid body or the pressing body. The macrostructures are formed integrally with the pressing body;

[0042] - Each macrostructure has a height less than 500 μm, preferably less than 200 μm and more preferably less than 100 μm, measured along the vertical axis of elongation of the wiper blade, the vertical axis of elongation being perpendicular to both the longitudinal axis of elongation and the transverse axis of elongation. The height of each macrostructure is measured between the bases of said macrostructure, measured from the solid body or pressed body from which said macrostructure extends. Advantageously, the height of each macrostructure is greater than 1 μm;

[0043] - each macrostructure has a width, measured along a transverse axis of extension or along a longitudinal axis of extension, of between 1 μm and 500 μm;

[0044] - Each macrostructure takes the form of a prismatic span extending from a solid body and forming a pressing body. Each macrostructure takes the form of, for example, a cylindrical column, a parallelepiped column, a spherical or hemispherical column, or a column of any shape. Advantageously, the pressing body comprises a plurality of macrostructures forming a regular or irregular patchwork pattern. In other words, the macrostructures forming the solid body can each represent a patchwork piece, which together form the patchwork pattern of the pressing body in order to maximize the pressing surface while benefiting from a discontinuous pressing surface in order to better remove the water wiped on the surface of the mounted glass by the wiper blade according to the first aspect of the invention;

[0045] - the distance between two adjacent macrostructures measured along the transverse or longitudinal axis of extension is between 1 μm and 100 μm;

[0046] - according to a first embodiment variant, the pressing body presents macrostructures of isotropic density along the wiper blade. In this first embodiment variant, the macrostructures are uniformly distributed relative to the longitudinal extension axis and / or relative to the transverse extension axis of the wiper blade. In other words, the macrostructures have the same distribution in terms of number, same size, same surface area, or same density relative to the longitudinal extension axis and / or relative to the transverse extension axis of the wiper blade;

[0047] the macrostructures are uniformly distributed along the wiper blade and relative to the longitudinal axis of extension and / or the transverse axis of extension;

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

[0049] - the macrostructures are distributed in a five-point configuration along the wiper blade;

[0050] - According to a second embodiment variant, which is an alternative to the first embodiment variant, the pressing body presents a macrostructure of anisotropic density along the wiper blade. In this second embodiment variant, the macrostructures are unevenly distributed relative to the longitudinal extension axis and / or relative to the transverse extension axis of the wiper blade. In other words, the macrostructures present variations in number, size, surface area, or density relative to the longitudinal extension axis and / or relative to the transverse extension axis of the wiper blade. Therefore, this advantageous configuration makes it possible to provide mechanical and / or pressing and / or sliding and / or friction properties that are different depending on the position of the macrostructure on the wiper blade, which ultimately makes it possible to improve the wiping performance of the wiper blade according to the first aspect of the invention;

[0051] - In particular, the density of the macrostructures is at its minimum in the central region of the pressing body relative to the transverse extension axis. In other words, the density of the macrostructures is at its maximum in the transverse region of the pressing body, this region being remote from the longitudinal extension axis. In general, the macrostructures considered in the transverse region of the pressing body present a higher density than the density of 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 a fractal pattern along the wiper blade and along the pressing body;

[0056] - the pressing body comprises rainwater removal channels for removing rainwater scraped by the wiper blade at the pressing surface, the removal channels being formed by macrostructures that are away from each other. In particular, the removal channels are directed towards the rear edge of the wiper blade;

[0057] - the removal channel has a V-shaped or U-shaped transverse profile opening onto the pressing face of the wiper blade. By way of non-limiting example, the removal channel is formed by grooves present in the pressing body and / or between the macrostructures;

[0058] - In order to improve the interaction between the pressing surface of the wiper blade and the surface of the embedded glass and in particular to improve the sliding of said surface, the pressing body has a texture of the pressing surface. In the context of the present invention, the texture takes the form of a microstructure superimposed on the pressing body at the pressing surface. In the example where the pressing body has a macrostructure, the texture is formed on the free end of the macrostructure, which forms the pressing surface of the wiper blade according to the present invention. The size of the texture is smaller than the size of the macrostructure. The texture of the pressing surface presents a height variation of less than 50 μm measured along the vertical axis of elongation. More particularly, the texture 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 etching, or by photolithography;

[0060] - In order to improve the interaction between the pressing surface of the wiper blade and the glazing surface and in particular to improve the sliding of said surface, the pressing body of the wiper blade according to the invention has a surface treatment on the pressing surface. In the context of the invention, this 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 comprises a material deposited to a thickness between 2 μm and 15 μm, preferably equal to 10 μm;

[0061] The material deposited and forming the surface coating comprises a graphite-containing paint. Alternatively, the surface treatment is obtained by a liquid method so as to overpolymerize the material used to press the body.

[0062] A second aspect of the present invention provides a wiper, comprising:

[0063] - a wiper blade according to the first aspect of the invention or according to any of the developments thereof; and

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

[0065] In the context of the invention, the wiper can be of any size so as to be able to cooperate, for example, with large-sized glazed surfaces, such as the windshield or rear screen of a motor vehicle, or so as to be able to cooperate with smaller-sized glazed surfaces, such as the optical surface of a sensor (e.g. of the LIDAR type) or the outer lens surrounding the taillights or headlights of a motor vehicle.

[0066] Particularly cleverly, the wiper blade is connected to the support element without a hinge: the wiper blade is fixed directly to the support element by a mechanical connection that does not allow a degree of freedom during use of the wiper. In other words, the wiper blade according to the first aspect of the invention is mounted fixedly and not in an articulated manner relative to the support element.

[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 spine strip. In the context of the present invention, each spine strip takes the form of an elongated body extending along the wiper blade and more particularly extending in a profiled body or solid body of the wiper blade. At least one spine strip is preferably fixed to the solid body of the wiper blade.

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

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

[0070] - a wiper according to the second aspect of the invention, the wiper being intended to come into contact with a glazed surface;

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

[0072] - Connecting means configured to securely fix the wiper to the wiper arm.

[0073] Particularly cleverly, 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 mounted relative to the wiper arm rather than in an articulated manner.

[0074] In the context of the present invention, and as described above, the glazed surface may be of the motor vehicle windshield type, or more generally any glazed surface of a motor vehicle, such as a side window or a rear screen window; and / or an optical surface of a sensor (such as in particular LIDAR); and / or an outer lens enclosing a headlight of a motor vehicle.

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

[0076] Different embodiments of the invention are foreseeable, combining the various optional features described here in all possible combinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Further characteristics and advantages of the invention will become more apparent from the following description and from a number of exemplary embodiments given as non-limiting illustrations with reference to the attached schematic drawings, in which:

[0078] Figure 1 A first embodiment of a wiper blade according to the first aspect of the invention is shown;

[0079] Figure 2 A second embodiment of the wiper blade according to the first aspect of the invention is shown;

[0080] Figure 3 A third embodiment of a wiper blade according to the first aspect of the invention is shown;

[0081] Figure 4 A fourth embodiment of a wiper blade according to the first aspect of the invention is shown;

[0082] Figure 5 A detailed view showing the pressing surface of a fifth embodiment of a wiper blade according to the first aspect of the invention; and

[0083] Figure 6 A wiper according to a second aspect of the invention is presented. DETAILED DESCRIPTION

[0084] Of course, the features, variants and different embodiments of the present invention can be combined with each other in various combinations, as long as they are compatible or not mutually exclusive. In particular, it is conceivable that the variants of the present invention only include the features selected to be described in isolation from the other features described below, provided that this selection of features is sufficient to provide a technical advantage or distinguish the present invention from the prior art.

[0085] In particular, all variants and all embodiments described can be combined with one another if nothing prevents this from a technical point of view.

[0086] In the figures, elements common to several figures retain the same reference numerals.

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

[0088] a longitudinal extension axis X which corresponds to the main extension direction 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 wiper blade 1 and / or of the pressing surface 10 for pressing against the glazing surface SV;

[0089] - a transverse extension axis Y extending perpendicularly 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 axis of extension Z extending perpendicularly to both the longitudinal axis of extension X and the transverse axis of extension Y. The vertical axis of extension Z extends from the upper face 111 of the wiper blade 1 and in a direction of the pressing face 10 perpendicular to the longitudinal axis of extension X, between said pressing face 10 and the upper edge of the wiper blade 1 .

[0091] Figures 1 to 4 An embodiment of a wiper blade 1 according to the invention is described in each case, a truncated perspective view of such a wiper blade 1 being depicted.

[0092] A wiper blade 1 for a motor vehicle wiper 2, the wiper blade 1 forming a profiled body 11 extending along an axis of longitudinal extension X, the profiled body 11 comprising a pressing face 10 intended to come into contact against a glazed surface SV of the motor vehicle, the pressing face 10 having a linear thickness per linear millimeter of the profiled body 11 measured along the axis of longitudinal extension X greater than 0.25 mm 2 surface area.

[0093] exist Figures 1 to 4 In FIG. 8 , the glazed surface SV is depicted by a dotted line.

[0094] exist Figures 1 to 4 , the profiled body 11 of the illustrated embodiment takes the shape of a parallelepiped having a rectangular cross section and extending along the longitudinal axis of extension X. Of course, in the context of the invention, the profiled body 11 of the wiper blade 1 may take any shape. In particular, the profiled body 11 may have a cross section that is the same at every point along the longitudinal axis of extension X, or may have a cross section that may vary along the longitudinal axis of extension X.

[0095] exist Figures 1 to 4 In the embodiment shown, the pressing surface 10 is located at the lower end of the profiled body 11, which end is intended to come into contact with the glazing surface SV. The pressing surface 10 corresponds to that face of the wiper blade 1 which performs the scraping and / or wiping of the glazing surface SV. The pressing surface 10 extends both along the longitudinal extension axis X and along the transverse extension axis Y. Therefore, according to the invention, the pressing surface 10 is much larger on the wiper blade 1 according to the invention than on known wiper blades.

[0096] To this end, Figures 1 to 4 In the embodiment shown, the molded body 11 forming the wiper blade 1 comprises:

[0097] a solid body 12 intended to be fixed to at least one spinal strip of the wiper 2. The solid body 12 is intended to allow the wiper blade 1 to be fixed to one or more spinal strips so that the wiper blade 1 can be mounted on the wiper 2. The solid body 12 extends along the longitudinal axis of extension X with a preferably non-varying profile. The width of the wiper blade 1 measured at the pressing body 13, measured along the transverse axis of extension Y, is preferably greater than 500 μm; and

[0098] - a pressing body 13, which is located in the continuation of the solid body 12 with respect to the vertical extension axis Z, which extends in a direction perpendicular to the longitudinal extension axis X of the pressing face 10, the pressing face 10 being formed by the free end of the pressing body 13 remote from the solid body 12. The pressing body 13 is arranged along the longitudinal extension axis X and along the transverse extension axis Y with a profile that may be constant (e.g. Figures 2 to 4 depicted) or with a contour that can be variable (such as Figure 5 depicted) extension.

[0099] To this end, Figures 2 to 4 In the embodiment shown, the pressing body 13 takes the form of a profile with a non-variable cross section along the longitudinal axis:

[0100] -exist Figure 2 In the embodiment shown, the pressing body 13 takes the form of a circular or semicircular profile extending along an axis of longitudinal elongation X;

[0101] -exist Figure 3 In the embodiment shown, the pressing body 13 takes the form of a rectangular or polygonal profile extending along an axis of longitudinal elongation X;

[0102] -exist Figure 4 In the embodiment shown, the pressing body 13 takes the form of a regular or irregular sawtooth profile extending along the axis X of longitudinal extension.

[0103] In contrast, Figure 5 The embodiment illustrated in FIG. 1 shows a pressing body 13 presenting a geometry that is discontinuous both along the longitudinal axis of extension and along the transverse axis of extension Y.

[0104] The cross section is considered to be in the plane formed by the transverse axis of elongation Y and the vertical axis of elongation Z.

[0105] The terminal end of the pressing body 13 considered along the vertical axis of extension Z forms the pressing face 10 pressed against the glazing surface SV, ie that face of the wiper blade 1 which cooperates with the glazing surface SV in order to perform wiping and / or scraping.

[0106] Particularly advantageously, the wiper blade 1 according to the invention comprises an architecture and a specific geometry along the vertical axis of extension Z. Thus, as previously described, the wiper blade 1 comprises a solid body 12 and a pressing body 13. In addition, the pressing body 13 comprises a plurality of macrostructures 131, each macrostructure 131 being remote from other macrostructures 131 directly adjacent along the longitudinal axis of extension X and / or along the transverse axis of extension Y.

[0107] The macrostructure 131 takes the form of a protrusion extending from the solid body 12 or the pressed body 13 and along the vertical axis of elongation Z.

[0108] Each macrostructure 131 has a height, measured along the vertical axis of extension Z of the wiper blade 1 , of between 1 μm and 100 μm and / or a width, measured along the transverse axis of extension Y or along the longitudinal axis of extension X, of between 1 μm and 500 μm;

[0109] Each macrostructure 131 takes the form of a span extending along the vertical axis of extension Z, having any shape variable or non-variable along the longitudinal axis of extension X and / or along the transverse axis of extension Y. The free end of each macrostructure 131 remote from the solid body 12 forms the pressing face 10 of the wiper blade 1 according to the invention.

[0110] exist Figure 2 In the embodiment shown, the macrostructures 131 forming the pressing body 13 take the form of a circular or semicircular profile extending along the longitudinal axis of extension X. Thus, each macrostructure 131 takes the form of a cylindrical or semi-cylindrical span extending along the longitudinal axis of extension X, each macrostructure 131 being spaced apart from the macrostructure 131 directly adjacent along the transverse axis of extension Y. The size and / or distance between two adjacent macrostructures 131 along the transverse axis of extension Y may be constant or variable, depending on the position of the macrostructure 131 concerned relative to the longitudinal axis of extension X.

[0111] exist Figure 3 In the illustrated embodiment, the macrostructures 131 forming the pressing body 13 take the form of a rectangular profile extending along the longitudinal axis of extension X. Thus, each macrostructure 131 takes the form of a prismatic span extending along the longitudinal axis of extension X, each macrostructure 131 being spaced apart from the macrostructure 131 directly adjacent along the transverse axis of extension Y. The size and / or distance between two adjacent macrostructures 131 along the transverse axis of extension Y may be constant or variable, depending on the position of the macrostructure 131 concerned relative to the longitudinal axis of extension X.

[0112] exist Figure 5In the embodiment shown, the macrostructures 131 forming the pressing body 13 take the form of rectangular columns that are separated from the columns directly adjacent 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 in order to maximize the area of ​​the pressing face 10 and better remove water wiped on the glass surface SV by the wiper blade 1 according to the invention.

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

[0114] In general, the macrostructures 131 may be regularly or irregularly distributed along the wiper blade 1, depending on the effect sought, in particular in terms of friction, heating, wear, wiping ability, or the ability to remove rainwater present on the glazing surface SV. In particular, the macrostructures 131 forming the pressing body 13 may present a variation in number and / or size and / or surface area and / or density relative to the longitudinal extension axis X and / or relative to the transverse extension axis Y of the wiper blade 1, or the macrostructures 131 forming the pressing body 13 may be invariable in terms of size and / or surface area and / or density relative to the longitudinal extension axis X and / or relative to the transverse extension axis Y of the wiper blade 1.

[0115] exist Figure 5 In the illustrated embodiment, the macro structures 131 are spaced apart from each other so that the pressing body 13 has rainwater removal channels 132 for removing rainwater scraped by the pressing surface 10 of the wiper blade 1 pressed against the glass surface SV. The removal channels 132 are formed by the macro structures 131 spaced apart from each other. The removal channels 132 have a V-shaped or U-shaped transverse profile leading 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 glazing surface SV and in particular to improve the sliding of said surfaces, the pressing body 13 has:

[0117] a texture 14 of the pressing face 10, which takes the form of a microstructure superimposed on the pressing body 13 and in particular on the macrostructure 131 at the pressing face 10. The dimensions of the texture 14 are smaller than those of the macrostructure 131. The texture 14 of the pressing face 10 presents a height variation of less than 50 μm measured along the vertical axis of elongation Z. More particularly, the texture 14 has a roughness Ra of less than 1 μm; and / or

[0118] - a surface treatment comprising a thin layer of material deposited onto the pressing face 10 of the wiper blade 1. In particular, the treatment of the pressing surface 10 comprises a material deposited to a thickness between 2 μm and 15 μm, preferably equal to 10 μm. The material deposited and forming the surface coating comprises a graphite-containing coating.

[0119] As in Figure 5 As can be seen in the figure, the texture 14 of the pressing surface 10 can take many different forms in the context of the present invention. It can in particular take the form of a one-dimensional or two-dimensional sawtooth array forming a comb-like portion, which is inclined or upright relative to the longitudinal extension axis X and / or the transverse extension axis Y and / or the vertical extension axis Z. The texture 14 can also take the form of a labyrinth structure forming a complex geometric shape or a micro-stitching structure. The technical effect of these microstructures is that they increase the surface area of ​​the pressing surface 10, so that the scratched rainwater is better removed and a removal channel 132 is provided at the pressing surface 10.

[0120] As in Figure 6 As can be seen in the figure, the present invention also relates to a wiper 2, which comprises:

[0121] - a wiper blade 1 as described above; and

[0122] - A supporting element 21 to which the wiper blade 1 is fixed via at least one spine strip.

[0123] Particularly cleverly, the wiper blade 1 is connected to the supporting element 21 without a hinge: the wiper blade 1 is fixed directly to the supporting element 21 by a mechanical connection that does not allow freedom during use of the wiper 2 , the wiper blade 1 being mounted fixedly with respect to the supporting element 21 and not in an articulated manner.

[0124] In summary, the invention relates to a novel form of wiper blade 1 having increased dimensions so that, for each linear millimeter of the wiper blade 1 measured along the longitudinal extension axis X, the surface area of ​​the pressing face 10 of the wiper blade 1 pressed against the glazing surface SV is greater than 0.25 mm 2 In addition, the wiper blade 1 comprises a solid body 12 configured to allow a hingeless connection with the support element 21 of the wiper 2 and a pressing body 13, which takes the form of a continuous or discontinuous structure. The pressing body 13 thus comprises macrostructures 131 and microstructures which make the pressing face 10 complex and discontinuous and give it a larger surface area than known wiper blades.

[0125] Of course, the present invention is not limited to the examples just described, and many modifications may be made to these examples without departing from the scope of the present invention. In particular, the various features, forms, variants and embodiments of the present invention may be combined with each other in various combinations, as long as they are mutually compatible or not mutually exclusive. In particular, all variants and embodiments previously described may be combined with each other.

Claims

1. A wiper blade (1) for a motor vehicle wiper (2), the wiper blade (1) forming a profiled body (11) extending along a longitudinal axis of extension (X), the profiled body (11) comprising a pressing surface (10) intended to come into contact against a glazed surface (SV) of the motor vehicle, characterized in that The pressing surface (10) has a linear width of the shaped body (11) measured along the longitudinal axis (X) of greater than 0.10 mm per linear millimeter. 2 , preferably greater than 0.25 mm 2 surface area.

2. The wiper blade (1) according to the preceding claim, wherein The molded body (11) comprises: - a solid body (12) intended to be fixed to at least one spinal strip of the wiper (2); and - a pressing body (13), which is located in the continuation of the solid body (12) relative to the vertical extension axis (Z), and the vertical extension axis extends in a direction perpendicular to the longitudinal extension axis (X) of the pressing surface (10), and the pressing surface (10) is formed by the free end of the pressing body (13) away from the solid body (12).

3. The wiper blade (1) according to claim 2, wherein: The pressing surface (10) is continuous both relative to the longitudinal extension axis (X) and relative to a transverse extension axis (Y) perpendicular to the longitudinal extension axis (X).

4. The wiper blade (1) according to claim 2, wherein: The pressing surface (10) is discontinuous relative to the longitudinal extension axis (X) and / or relative to the transverse extension axis (Y) perpendicular to the longitudinal extension axis (X), and the pressing body (13) of the wiper blade (1) includes a plurality of macro structures (131), each macro structure (131) being away from other directly adjacent macro structures (131).

5. The wiper blade (1) according to the preceding claim, wherein Each macrostructure (131) has a width, measured along said transverse axis of extension (Y) or along said longitudinal axis of extension (X), between 1 μm and 500 μm.

6. The wiper blade (1) according to any one of claims 4 and 5, wherein: The pressing body (13) presents a macroscopic structure (131) with isotropic density 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) at the pressing surface (10), and the removal channel (132) is formed by macro structures (131) that are spaced apart from each other.

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

9. A wiper (2), comprising: - A wiper blade (1) according to any one of the preceding claims; as well as - A supporting element (21) to which said wiper blade (1) is fixed via at least one spine strap.

10. A wiping system (3) for wiping a glass surface (SV) of a motor vehicle, the wiping system (3) comprising: - a wiper (2) according to the preceding claim, said wiper (2) being intended to come into contact with said glazed surface (SV); - a wiper arm, the wiper arm being configured to drive the wiper (2) in rotation; - Connecting means (31) configured to securely fix the wiper (2) to the wiper arm.

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