• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a wiper rubber for a windshield wiper, in particular for a vehicle, which comprises a fastening section 1 and a wiper lip section 2. In order to reduce the coefficient of friction of the wiper rubber, reduce the effects of differences in sliding friction between the wiper rubber and the window to be wiped, and to prevent the wiper rubber or wiper from squeaking and cracking, the cross-sectional area Q of the fastening section 1 and / or the wiper lip section 2 changes along the Longitudinal direction L of the squeegee. In addition, the present invention applies to a method for producing a squeegee rubber position.
    公开号:BE1022009B1
    申请号:E2013/0198
    申请日:2013-03-26
    公开日:2016-02-04
    发明作者:Andreas Ewert；Alain-Bernard Isel；Markus Liedel；Philippe Wolters
    申请人:Robert Bosch Gmbh；
    IPC主号:
    专利说明:

    Frictional value reduced squeegee
    The present invention relates to a squeegee and a method for its production.
    State of the art
    Various methods aim to reduce the frictional behavior of wiper rubbers for vehicle
    Windscreen wiper blades for different disc surface conditions, such as wet, dry and dirt to improve.
    However, current squeegee materials may age, which may involve a change in friction properties. In this case, an increase in the coefficient of friction due to the so-called stick-slip effect can adversely affect the cleaning effect and the acoustic behavior.
    Publications US 2004/0237229 A1, EP 1 390 430 BI, KR 2001091609, WO 1998/010965 A1, JP 2003-138216, DE 10 2008 004 636 A1, TW 412487 B, WO 2004/002791 and US 2003/0233722 A1 describe different possibilities for improving wiper rubbers.
    Disclosure of the invention
    The present invention is a squeegee for a windshield wiper, in particular for a vehicle, which comprises a mounting portion and a Wischlip penabschnitt.
    In order to reduce the coefficient of friction of the squeegee, to reduce the effects of sliding friction differences between the squeegee and the wheel to be wiped, and to prevent squeaking and jumping of the squeegee or wiper, it has been found advantageous to design squeegee in such a way that the cross-sectional area of the fastening portion and / or the wiper lip portion changes along the longitudinal direction of the wiper blade rubber. In other words, it has been found to be advantageous if the squeegee, in particular the fastening section and / or the wiper lip section of the squeegee, has a geometry which is not uniform or constant over the longitudinal extension of the squeegee. It has been found that in a simple manner, the friction of wiper blades (wiper blades) on the disc can advantageously be reduced to a factor of 2 to 10.
    Due to the cross-sectional area which changes along the longitudinal direction of the wiper blade rubber, such wiper rubbers can not easily be produced by an extrusion process.
    By means of injection molding, however, such a design of the wiper blade rubber is feasible.
    In a preferred embodiment, therefore, the squeegee is made by injection molding.
    A change in the cross-sectional area of the attachment portion and / or the wiper lip portion along the longitudinal direction of the squeegee can be realized by various individually formable or combinable embodiments, which will be explained in more detail below.
    In the context of one embodiment, the cross-sectional area of the fastening section and / or of the wiper lip section is smaller at the two ends of the wiper rubber than in the middle region of the wiper rubber. In the middle of the wiper blade, in particular, a region of the squeegee can be understood which extends between the two ends of the squeegee and within which the center of the squeegee is located.
    In the context of one embodiment of this embodiment, the cross-sectional area of the fastening section and / or the wiper lip section is greater lateral and / or vertical, in particular lateral, at the two ends of the wiper blade rubber than in the central region of the wiper rubber.
    In the context of another alternative or additional refinement of this embodiment, the cross-sectional area of the fastening section and / or the wiper lip section is smaller at the two ends of the wiper rubber and / or vertically, in particular vertically, smaller than in the central region of the wiper rubber.
    In this case, the term latéral denotes, in particular, a lateral extent of the wiper rubber, in particular of the fastening section and / or of the wiper lip section (see FIGS. 2 and 6 and the description of the drawing).
    In this case, with the term vertical, in particular, an extension of the wiper blade rubber along an area extending from the wiper lip section through the fastening section, independent of the spatial direction or position of the wiper blade and the direction of gravity
    Beam (see Figures 3, 4 and 5a and Figu renbeschreibung).
    Within the scope of a specific embodiment of this embodiment, the attachment section and / or the wiper lip section tapers from one end of the squeegee along the longitudinal direction of the squeegee, in particular laterally, and then widens towards the other end of the squeegee, in particular laterally.
    Within the scope of another, special embodiment of this embodiment, the fastening section and / or the wiper lip section, in particular the fastening section, initially widens, in particular vertically, from one end of the wiper blade along the longitudinal direction of the squeegee, and then tapers towards the other end of the wiper blade again, especially vertically.
    For example, the fastening section and / or the wiper lip section can widen from the two ends of the wiper blade rubber in the direction of the center of the wiper rubber, in particular laterally, tapered and / or, in particular vertically.
    By introducing such different curvatures (see also FIGS. 2 to 6) into the squeegee, the squeegee can advantageously be adapted optimally over the length with respect to the rigidity and the deflection behavior to the vehicle-specific disk and the tribological requirements.
    In the context of another embodiment, the squeegee has a profiling which is formed along the longitudinal direction of the squeegee and, in particular, changes along the longitudinal direction of the squeegee. In particular, the wiper lip section can have the profiling.
    The wiper lip section may in particular have two wiper edges, an end face formed between the wiping edges, and two side faces each adjacent to a wiper edge.
    Within the scope of an embodiment of this embodiment, the side surfaces and / or the wiping edges and / or the end face of the wiper lip section have a profiling formed along the longitudinal direction of the squeegee and, in particular, along the longitudinal direction of the wiper blade.
    The wiper lip section can be profiled both by microstructuring and by macroscopic structuring.
    In the context of a special embodiment, the longitudinal direction of the wiper blade rubber is formed by microstructuring in the side surfaces and / or the wiping edges and / or the end face of the wiper lip section. In particular, the microstructuring may be formed in the wiping edges and / or in the areas of the side surfaces of the wiper lip section adjacent to the wiping edges. The microstructuring may in particular comprise elevations and depressions, wherein the elevations have an average height and / or width of k 5 pm to 100 100 pm or 50 50 pm or 20 20 pm and the depressions have an average depth and / or width of k 5 pm to ^ 100 pm or ^ 50 pm or ^ 20 pm.
    Such a microstructuring (see also FIGS. 4, 7a to 7e) can advantageously be a lotus
    Effect can be achieved, which can have an advantageous effect on the friction properties and Wischqualitât of the squeegee.
    In the context of another, alternative or additional, special embodiment, a series of, for example, macroscopic, material fading, for example in the form of blind holes, and / or a series of, for example, macroscopic, wipes along the longitudinal direction of the wiper blade in the side surfaces of the wiper lip section. roscopic material reinforcements, for example in the form of, separated from each other, for example, nubs, surveys trained. The Materialschwâchungen and / or material reinforcements can be formed, for example, in a central region of the side surfaces of the wiper lip portion. By mak-roscopic Materialschwâchung or material reinforcement can be understood in particular a Materialschwâchung or material reinforcement of more than one or more millimeters, possibly even from one to several centimeters.
    By introducing such recesses and / or lateral protruding elements (see also Figures 5a and 6) in the squeegee, the squeegee can advantageously optimally over the length with respect to the rigidity and the Auslenkverhaltens to the vehicle-specific disc and the tribological requirements be adjusted.
    By clever combination of the design elements described above (bulges, macroscopic structuring), the deformation behavior of the wiper blade rubber can advantageously be adjusted in a targeted manner via the squeegee rubber strips. Due to the microstructuring, a lotus effect can also be achieved. By adjusting a targeted deformation behavior and / or introducing a lotus effect, the coefficient of friction of the wiper blade can advantageously be reduced, the effects of sliding friction differences between the squeegee and the wiper to be wiped reduced, and squeaking and jumping of the squeegee or Windscreen wiper can be prevented.
    Within the scope of a further embodiment, the wiper rubber comprises silicone, in particular liquid silicone (English: Liquid Silicone Rubber (LSR)) or is formed from it. By forming the squeegee made of silicone can advantageously also reduces the coefficient of friction of the squeegee, reduced the effects of Gleitrei- bungsunterschieden between the squeegee and the wi-schenden disc and squeaking and jumping of the squeegee or windscreen wiper can be prevented.
    Alternatively or additionally, this may be effected by a chemical surface treatment of the wiper blade rubber. In principle, it is possible to chemically treat the entire surface of the wiper blade rubber. Preferably, those areas of the wiper blade, for example the wiper lip section, are chemically treated, which are brought into contact with the window.
    In the context of a further embodiment, therefore, the surface of the wiper blade rubber, in particular of the wiper lip section, is chemically surface-treated, for example fluorinated. The treatment can be carried out in the gas phase, for example with halides. Preferably, hydrogen atoms are substituted by fluorine atoms in the, in particular polymeric, material on the surface of the wiper rubber. The surface of the wiper blade rubber, in particular of the wiper lip section, can be fluorinated in particular.
    In particular insofar as the squeegee is silicone-based, the squeegee is advantageously arbitrarily einfàrb-bar. The squeegee can be colored, for example, from red to yellow, blue or green, in particular matching the vehicle color. Thus, advantageously, the visual appearance of the vehicle can be improved and customized.
    In the context of a further embodiment, therefore, the squeegee is colored, for example red, blue, green or yellow. In particular, the squeegee can have a similar, in particular the same, color as the vehicle to be equipped with it.
    In a special embodiment, the squeegee is produced by means of multi-component injection molding and / or has at least one, optionally partial, encapsulation. For example, the squeegee may have at least one portion which is formed of a different injection molding component than the wiper lip portion and / or within which another, for example metallic, material is encapsulated.
    In this case, the squeegee may in particular have at least one section produced by means of multicomponent injection molding and / or overmolding, which serves as an adapter for fastening the squeegee to a windscreen wiper arm and / or as a wind deflector and / or as a spring plate, for example for producing a jointless Wi-shear ,
    Alternatively or additionally, the squeegee by means of multi-component injection molding or extrusion or Pres-sens produced subregions different Materi alqualitât, for example natural rubber (NR), chloroprene rubber (CR) or ethylene-propylene-diene monomer rubber (EPDM) or their Material combinations under each other, or physical properties, in particular with different coefficients of friction and / or different hardness or stiffness and / or different electrical conductivity and / or different wear tendency and / or different color, have. As a result, color effects and, in particular, a targeted deformation behavior via the squeegee rubber lengths can be adjusted if necessary. By setting a specific deformation behavior, the coefficient of friction of the wiper blade rubber can advantageously also be reduced, the effects of sliding friction differences between the squeegee and the wiper to be wiped reduced and squeaking and jumping of the wiper blade or wiper can be prevented.
    In particular, at least one injection-molded component can be electrically conductive. In this way, conductor tracks, for example for switching and / or signal currents, for example for a sensor or other consumer, can be advantageously provided, in particular injected and / or molded, and / or a conductive track can be applied by means of electroplating or plasma coating , Advantageously, signals can be routed via the strip conductors over the wiper rubber next to the pane.
    Furthermore, the present invention relates to a wiper blade and / or a windscreen wiper which comprises a wiper rubber according to the invention.
    With regard to further technical features and advantages of the wiper blade rubber, wiper blade and blade wiper according to the invention, reference is hereby explicitly made to the explanations in connection with the method according to the invention and the figures.
    Another object of the present invention is a method for producing a wiper blade rubber having a fastening portion and a wiper lip portion, for example a wiper rubber according to the invention.
    The method is based in particular on injection molding with an injection molding tool. The injection molding tool can be designed, in particular, to form the various wiping gum shapes described within the scope of the wiper rubber according to the invention. In particular, the cross-sectional area of the cavity of the injection molding tool can change along the longitudinal direction of the wiper rubber to be formed therein.
    In particular, the method comprises the method step a): injecting at least one injection-molding component into the cavity of the injection-molding tool.
    Furthermore, the method may include the method step b): vulcanizing or vulcanizing the injection-molded squeegee molding.
    The injection molding tool can have a microstructure, in particular in a region which serves to form a region of the wiper rubber contacting the disk during operation. In the injection or filling process of method step a), this microstructure can be imaged almost 1: 1 in the injection-molded part and later vulcanized out in process step b). In this case, even structures up to approximately 5 centimeters can be reproduced, which makes possible a particularly simple formation of a top surface with a lotus effect.
    In one embodiment, therefore, a micro-structure is introduced into the injection molding tool. In particular, the microstructuring can be introduced into the injection molding tool along the longitudinal direction of the wiper rubber to be formed. In this case, the microstructuring is preferably formed in a region of the injection-molding tool which serves to form the side surfaces and / or the wiping edges and / or the end surface, in particular the wiping edges and / or areas of the side surfaces adjoining the wiping edges, of the wiper lip section of the wiper rubber ,
    In addition, through an injection molding process, recesses and / or lateral protruding elements can advantageously be introduced into the squeegee (see FIGS. 5a and 6). These advantageously make it possible to adapt the squeegee optimally over the length with regard to the rigidity and the deflection behavior to the vehicle-specific disk and the tribological requirements.
    In a further embodiment, therefore, the injection molding tool is designed such that in the side surfaces of the wiper lip portion of the wiper blade to be formed along the longitudinal direction of the wiper blade a number of, for example, macroscopic, Material-weaknesses, for example in the form of blind holes, and / or a Series of, for example, macroscopic, material reinforcements, for example in the form of, from each other demarcated, for example, knob-like, elevations trained.
    In addition, different curvatures can be introduced into the squeegee by means of an injection-molding process (see FIGS. 2 to 6). These advantageously also make it possible to adapt the squeegee optimally over the length with regard to the rigidity and the deflection behavior to the vehicle-specific disk and the tribological requirements.
    Within the scope of an embodiment of this embodiment, the cross-sectional area of the cavity of the injection-molding tool is greater at the two ends, for example lateral and / or vertical, in particular lateral, than in the central region.
    In the context of another embodiment of this embodiment, the cross-sectional area of the cavity of the injection-molding tool at the two ends, in particular latéral and / or vertically, in particular vertically, smaller than in the central region.
    Within the scope of a special embodiment of this embodiment, the cavity of the injection-molding tool, in particular in the region of the fastening section and / or the wiper lip section of the wiper blade to be formed, tapers from one end along the longitudinal direction, in particular laterally, and then widened to the other end back again, especially latéral.
    Within the scope of another specific embodiment of this embodiment, the cavity of the injection molding tool widens, in particular in the region of the fastening section and / or the wiper lip section of the wiper rubber to be formed, from one end along the longitudinal direction, in particular vertically, and then tapers towards the other end again, especially vertically.
    The method can be based in particular on multi-component injection molding. In particular, two or more injection-molded components can be injected into the cavity of the injection molding tool in method step a).
    In the case of the injection-molding process, additional components can be simultaneously introduced into the squeegee by (partial) extrusion.
    Alternatively or additionally, therefore, in process step a) at least one, for example partial, re-injection can be realized. For example, in process step a) an injection molding component can be extrusion-coated with another injection-molding component. Or it can be encapsulated in process step a) a metallic molding with one or more injection molding components. For example, adapters for attaching the wiper to the wiper arm and / or wind deflector and / or spring plates may be formed to produce a non-articulated wiper.
    In addition, by means of multicomponent injection molding it is possible, if necessary, to realize partial regions of the wiper rubber having different material qualities or physical properties. For example, subregions with different coefficients of friction, different wear tendency, different hardness / stiffness or even different colors can be formed.
    In addition, it is possible to process two or more different injection molding components in the squeegee rubber, of which at least one injection molding component provides an electrical conductivity sufficient to pass on switching and / or signal currents from sensors. Alternatively, it is possible to set one of the injection-molded components in such a way that it can be electroplated, so that switching and / or signal currents can be conducted via this coating. Thus, advantageously via the conductive tracks signals next to the disc can be guided over the squeegee.
    In process step a), therefore, two or more different injection molding components can be used which are designed for subregions of different material quality or physical properties, in particular with different coefficients of friction and / or different hardness or stiffness and / or different electrical conductivity / or different VerschleBnei-tion and / or different color, train.
    In another embodiment, the injection molding tool is a Mehrkavitâtswerkzeug for producing a plurality of wiper blades. Thus, advantageously, several squeegees can be produced at the same time. In particular, the Mehrkavitâtswerkzeug be a stack tool, which is particularly equipped with cavities in two or more Ebe-NEN. Thus, advantageously, higher quantities can be produced.
    Within the scope of a further embodiment, the injection molding tool has modular cavities for producing wiper rubbers of different lengths with the injection molding tool. Thus, wiping rubbers of different lengths can advantageously be produced with the same injection molding tool.
    With regard to further technical features and advantages of the method according to the invention, reference is hereby explicitly made to the explanations in connection with the wiper-squeegee according to the invention and the figures.
    Zeichmmgen
    Further advantages and advantageous embodiments of the objects according to the invention are illustrated by the drawings and explained in the following description. It should be noted that the drawings are only descriptive and are not intended to limit the invention in any way. Show it
    Figure 1 is a schematic, perspective view of a conventional squeegee with a along the longitudinal direction of the wiper blade constant Quer-Querschnittsflâche.
    FIG. 2 is a schematic perspective view of one embodiment of a wiper blade rubber according to the invention, in which the fastening section and the wiper lip section are laterally tapered from the two ends towards the center of the squeegee; FIG.
    3 is a schematic perspective view of another embodiment of a wiper blade rubber according to the invention, in which the fastening section widened vertically from the two ends towards the center of the wiper rubber;
    4 shows a schematic, perspective view of a further embodiment of a wiper rubber according to the invention, in which the fastening section widened vertically from the two ends to the center of the wiper rubber and in which a microstructuring is formed in the side surfaces of the wiper lip section along the longitudinal direction of the wiper rubber;
    Fig. 5a is a schematic, perspective view of another embodiment of an inventive
    Wiper rubbers, in which the Befestigungsab-section from the two ends to the center of the wiper blade vertically widened and in which in the side surfaces of the wiper lip portion along the longitudinal direction of the squeegee, a series of macroscopic material weaknesses in the form of blind holes is formed;
    Fig. 5b is an enlarged, schematic cross-section through the wiper lip portion of the embodiment shown in Fig. 5a;
    6 is a schematic perspective view of another embodiment of a wiper blade according to the invention, in which the fastening section and the wiper lip section are latetally tapered from the two ends to the center of the squeegee and along the longitudinal direction of the squeegee in the side surfaces of the squeegee section A series of macroscopic material reinforcements in the form of mutually delimited, knob-like elevations is formed;
    7a-e show schematic cross-sectional views to illustrate different design possibilities for microstructuring;
    8a-c are schematic views for illustrating a chemical surface treatment in different embodiments of inventive wiper rubbers, and
    9a, b show schematic cross-sectional views for illustrating the active regions of a wiper blade during a wiping process.
    FIG. 1 shows a conventional squeegee with a fastening section 1 and a wiper lip section 2, in which the wiper lip section 2 is connected to the fastening section 1 via a so-called tilting web 3. FIG. 1, illustrates that the cross-sectional area Q of the fastening section 1 and the wiper lip section 2 is constant along the longitudinal direction L of the wiper blade rubber.
    FIG. 2 shows an embodiment of a wiper blade according to the invention. FIG. 2 illustrates that the wiper-rubber has a fastening section 1 and a wiper-lip-pen section 2, wherein the wiper-lip section 2 is connected to the fastening section 1 via a tilting web 3. FIG. 2 illustrates that, in this case, the cross-sectional area Q of the fastening section 1 and of the wiper lip section 2 changes in the longitudinal direction L of the wiper rubber, in contrast to the conventional wiper rubber shown in FIG. In particular, the cross-sectional area Q of the fastening section 1 and the wiper lip section 2 at the two ends of the wiper rubber is latear 1 greater than in the central region of the wiper rubber. In particular, the fastening section 1 and the wiper lip section 2 taper from one end of the squeegee along the longitudinal direction L of the squeegee first latéral 1 and then widened latéral again to the other end of the squeegee 1. Or in other words, the mounting portion 1 and the wiper lip section. 2 taper from the two ends of the squeegee towards the center of the squeegee latéral 1.
    FIG. 3 shows another embodiment of a wiper rubber according to the invention, which likewise has a fastening section 1 and a wiper lip section 2, wherein the wiper lip section 2 is connected to the fastening section 1 via a tilting web 3. FIG. 3 illustrates that the cross-sectional area Q of the fastening section 1 likewise changes along the longitudinal direction L of the wiper rubber. In particular, the cross-sectional area Q of the fastening section 1 at the two ends of the wiper rubber is vertically smaller than in the middle region of the wiper rubber. In particular, the Befestigungsab-section 1 widened by one end of the wiper blade along the longitudinal direction L of the wiper blade rubber first vertically v and then tapers back to the other end of the wiper blade back vertically v. In other words, the fastening portion 1 widens vertically from both ends of the squeegee toward the center of the squeegee.
    FIGS. 4 to 6 further show that the wiper-lip portion 2 has two wiping edges 2a, an end face 2b formed between the wiping edges 2a, and two side surfaces 2c, each adjacent to a wiping edge 2a.
    The embodiment shown in FIG. 4 differs essentially from the embodiment shown in FIG. 3 in that, in addition to the side surfaces 2c of the wiper lip section 2 adjoining the wiping edges 2a, a microstructuring 4 ', 5' is formed, which elevations 5 'and depressions 4' in the micrometer range.
    The embodiment shown in FIG. 5a differs essentially from the embodiment shown in FIG. 4 in that a number of macroscopic material weaknesses 4 in the form of blind holes are formed in the side surfaces 2c of the wiper lip section 2 along the longitudinal direction L of the wiper blade rubber. The MaterialschwÄchungen 4 are formed in particular in a central region of the Seitenflàchen 2c of the wiper lip section 2. FIG. 5b is a cross section through one of the blind-hole-shaped material weaknesses 4.
    The embodiment shown in FIG. 6 differs essentially from the embodiment shown in FIG. 2 in that, in addition, in the side surfaces 2c of the wiper lip section 2 along the longitudinal direction L of the wiper blade, a series of macroscopic material reinforcements 5 in the form of is formed from each other delimited, knob-like elevations. The material reinforcements 5 are formed in particular in a central region of the side surfaces 2 c of the wiper lip section 2.
    FIGS. 7a to 7e show some refinement possibilities for a microstructuring, which may be formed along the longitudinal direction L of the wiper blade in the side surfaces 2c and / or the wiping edges 2a and / or the end face 2b of the wiper lip section 2. The microstructuring is preferably formed in the regions of the side surfaces 2c of the wiper lip section 2 adjoining the wiping edges 2a, since these, as shown in FIGS. 9a and 9b, are essentially involved in the wiping away of water. By microstructuring a lotus effect can be effected, which can contribute to reduce the friction of the squeegee on the disc and to improve the Wischqualitât of the squeegee. FIGS. 7a to 7e illustrate that the microstructure comprises elevations 5 'and depressions 4', wherein the elevations 5 'have an average height and / or width of h 5 pm to -100 pm and the depressions 4'. have an average depth and / or width of h 5 pm to ^ 100 pm. In the embodiment shown in Figure 7a, the elevations 5 'in a plurality of spatial directions are curved flat. In the embodiment shown in FIG. 7b, the elevations 5 'have a conical tip. In the embodiment shown in FIG. 7c, the elevations 5 'are in several
    Spatial directions strongly curved. In the embodiment shown in FIG. 7d, the elevations 5 'are skewed. In the embodiment shown in Figure 7e, the elevations 5 'are semi-cylindrical and thereby strongly curved in a spatial direction.
    Figures 8a to 8c illustrate a partial chemical surface treatment, for example fluorination, 6 of the wiper lip portion 2 of three different wiper rubber embodiments. FIGS. 8a to 8c show that, in particular, the area of the wiper lip active during wiping, in particular the areas of the side surfaces 2c adjoining the wiping edges 2a, the wiping edges 2a and the end face 2b of the wiper lip section 2, can have a chemical surface treatment 6.
    FIG. 9a shows that, in particular, the regions of the side surfaces 2c adjacent to the wiping edges 2a and the wiping edges 2a of the wiping lip section 2 are involved in wiping away water 9 from a disk 8. FIG. 9b is a great enlargement of a section from FIG. 9a. FIG. 9a furthermore shows that the fastening portion 1 of the wiper blade rubber can be inserted into a fastening rail 7 of the wiper arm.
    权利要求:
    Claims (15)
    [1]
    claims
    A squeegee for a windshield wiper, in particular for a vehicle, comprising a mounting portion (1) and a wiper lip portion (2), wherein the cross-sectional area (Q) of the mounting portion (1) and / or the wiper lip portion (2) along the Length direction (L) of the squeegee changed.
    [2]
    2. squeegee according to claim 1, wherein the cross-sectional area (Q) of the Befestigungsab-section (1) and / or the wiper lip portion (2) at the two ends of the squeegee, in particular latéral (1) and / or vertical (v), is greater as in the middle region of the wiper blade, and / or wherein the cross-sectional area (Q) of the attachment section (1) and / or the wiper lip section (2) at the two ends of the wiper blade, in particular latéral (1) and / or vertical (v) , smaller than in the middle area of the squeegee.
    [3]
    3. squeegee according to claim 1 or 2, wherein the mounting portion (1) and / or the wiper lip portion (2) of one end of the squeegee along the longitudinal direction (L) of the squeegee to the other end of the squeegee first, in particular latéral (1), tapered and then again, in particular latéral (1), widened, and / or wherein the attachment portion (1) and / or the wiper lip portion (2), in particular the attachment portion (1), from one end of the squeegee along the longitudinal direction (L) of the squeegee to the other end of the squeegee first, in particular vertically (v), widened and then again, in particular vertically (v), rejuvenated.
    [4]
    4. squeegee according to one of claims 1 to 3, wherein the wiper lip portion (2) - two wiper edges (2a), - between the wiper edges (2a) formed Stirnflche (2b) and - two, each at a wiper edge (2a) adjacent side surfaces (2c), wherein the side surfaces (2c) and / or the wiper edges (2a) and / or the end face (2b) of the Wischlippenab-section (2) formed along the longitudinal direction (L) of the wiper blade, and in particular along the Läggsrichtung (L) of the squeegee changing, profiling (4,5) have.
    [5]
    5. squeegee according to claim 4, wherein along the longitudinal direction (L) of the wiper blade a microstructure in the Seitenflachen (2c) and / or the wiper edges (2a) and / or the end face (2b) of the Wischlippenab-section (2) is formed,
    [6]
    6. squeegee according to claim 5, wherein the microstructure in the wiping edges (2a) and / or in the wiping edges (2a) adjacent areas of Seitenflä che (2c) of the wiper lip portion (2) are formed, in particular wherein the microstructure elevations and depressions, wherein the elevations have an average height and / or width of ^ 5 μη to ^ 100 pm and the depressions have an average depth and / or width of ^ 5 pi to ^ 100 pm.
    [7]
    7. squeegee according to any one of claims 1 to 6, wherein the squeegee is made by injection molding.
    [8]
    8. squeegee according to one of claims 1 to 7, wherein the squeegee silicone, in particular liquid silicone, um-sums, in particular wherein the surface of the wiper gum-mis, in particular the wiper lip portion, is chemically surface-treated.
    [9]
    9. squeegee according to one of claims 1 to 8, wherein the. Squeegee is colored, for example, red, blue, green or yellow, in particular wherein the squeegee has a Ähn-Liche, in particular the same color as the vehicle to be equipped with it.
    [10]
    10. squeegee according to one of claims 1 to 9, wherein the squeegee is produced by means of multi-component injection molding and / or at least one encapsulation, wherein the squeegee has at least one prepared by means of multi-component injection molding and / or overmolding section which serves as an adapter for fastening of the wiper blade on a windshield wiper arm and / or as a wind deflector and / or as a spring plate, for example for producing a joint-free Wi-shear, and / or wherein the squeegee produced by multicomponent injection partial areas of different material qualitât or physical properties, in particular with different coefficients of friction and / or different hardness or stiffness and / or different electrical conductivity and / or different wear tendency and / or different color, and / or wherein at least one injection-molded component is electrically conductive, in in particular to provide printed conductors, for example for switching and / or signal currents, for example for a sensor or other consumer, and / or to enable the application of a conductor track by means of electroplating or plasma coating.
    [11]
    A method of manufacturing a squeegee having a mounting portion (1) and a wiper lip portion (2) by injection molding with an injection molding tool, wherein the cross-sectional area (Q) of the cavity of the molding tool is along the lengthwise direction (L) of therein changing wiper rubbers to be formed comprising the method steps of: a) injecting at least one injection molding component, in particular of two or more injection molding components, into the cavity of the injection molding tool; and b) optionally vulcanizing or volatilizing the injection-molded squeegee molding.
    [12]
    12. The method according to claim 11, wherein along the longitudinal direction (L) of the wiper rubber to be formed, a micro-structuring is introduced into the injection mold, in particular wherein the microstructure is formed in a region of the injection mold which is used to form the side surfaces (2c) and / or of the wiping edges (2a) and / or the end face (2b), in particular of the wiping edges (2a) and / or areas of the side surfaces (2c) adjoining the wiping edges (2a), of the wiper lip section (2) of the wiper blade rubber.
    [13]
    13. The method of claim 11 or 12, wherein the Kavitât of the injection mold, in particular in the region of the mounting portion (1) and / or the wiper lip portion (2) of the wiper rubber to be formed, from one end along the longitudinal direction (L) to the other end at least, in particular latéral (1), tapered and then widened again, in particular latéral (1).
    [14]
    14. The method according to any one of claims 11 to 13, wherein the Kavitât of the injection molding tool, in particular in the region of the attachment portion (1) and / or the wiper lip portion (2) of the wischgum-misc to be formed from one end along the longitudinal direction (L) at the other end, in particular vertically (v), widened and then rejuvenated, in particular vertically (v).
    [15]
    15. A method according to any one of claims 11 to 14, wherein the injection molding tool is a Mehrkavitâtswerkzeug for producing a plurality of wiper blades, in particular wherein the Mehrkavitâtswerkzeug a stack tool, in particular with cavities in two or more levels and / or wherein the injection mold modular Kavitâten for production having wiper rubbers of different length with the injection molding tool.
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    同族专利:
    公开号 | 公开日
    FR2988357A1|2013-09-27|
    FR2988357B1|2018-10-05|
    DE102012204748A1|2013-09-26|
    引用文献:
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    法律状态:
    2020-12-23| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200331 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012204|2012-03-26|
    DE201210204748|DE102012204748A1|2012-03-26|2012-03-26|Wiping rubber for windscreen wiper of vehicle, has mounting portion and wiping lip portion comprising cross-section area that is changed along longitudinal direction of rubber, which is formed from liquid silicone in red- and blue colors|
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