• 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 blade and a method for producing a wiper blade.
    公开号:BE1019205A5
    申请号:E2010/0130
    申请日:2010-03-02
    公开日:2012-04-03
    发明作者:Eric Pieters
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    description
    title
    wiper blade
    The present invention relates to a wiper blade and a method for producing a wiper blade.
    State of the art
    It is known wiper blades, especially for motor vehicles, made of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR), ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM), nitrile Rubber (NBR), styrene-butadiene rubber (SBR) or nitrile rubber / polyvinyl chloride (NBR / PVC).
    Due to their frictional properties, however, such wiper blades can cause noise during operation and have high abrasion.
    To improve the friction properties of such wiper blades can be provided with a powder coating of ultra-high molecular weight polyethylene (UHMW-PE, • "ultra high molecular weight polyethylene"). One problem with ultra-high molecular weight polyethylene, however, is that it can not be coextruded with the rubber materials in one process step. On the other hand, ultra-high-molecular-weight polyethylene currently has very few suppliers, so that in the event that ultra-high-molecular-weight polyethylene is no longer available or only available in insufficient quantities, alternatives are sought.
    DE 199 44 274 A1 proposes a wiper blade for improving the friction properties, which comprises a thermoplastic elastomer composition comprising a thermoplastic resin as a continuous phase and a dynamically crosslinked elastomer composition as a dispersed phase. However, thermoplastic elastomer compositions, especially when heated at least temporarily to a temperature near the melting range, have a poor resistance to deformation (English: "Permanent Set").
    Disclosure of the invention
    The present invention is a wiper blade, in particular for motor vehicles, which has a first region, which is an elastomer selected from the group consisting of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR), ethylene-propylene Diene rubber (EPDM), ethylene-propylene rubber (EPM), nitrile rubber (NBR), styrene-butadiene rubber (SBR), nitrile rubber / polyvinyl chloride (NBR / PVC) and mixtures thereof, and at least a second region at least partially connected to the first region, and characterized in that the second region comprises a fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units.
    The use of fluorine and / or chlorine polymers has the advantage that this reduces the friction and thus improves the wiping quality properties and endurance properties and the noise and abrasion can be reduced. The hydrogen atoms and / or ethylene units of the fluorine and / or chlorine polymers have the advantage that they, in particular compared with perfluorinated polymers such as polytetrafluoroethylene (PTFE), which have no or no sufficient binding to the elastomers of the first region, allow or improve the connection to the elastomers of the first area.
    Preferably, the first region comprises only non-thermoplastic elastomers or no thermoplastic resins and / or elastomers. This can advantageously result in improved deformation resistance. For example, it includes an elastomer selected from the group consisting of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR), ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM). , Nitrile rubber (NBR), styrene-butadiene rubber (SBR) and mixtures thereof,
    In one embodiment of the present invention, the first region is an elastomer selected from the group consisting of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR), ethylene-propylene-diene rubber (EPDM). , Ethylene-propylene rubber (EPM), nitrile rubber (NBR), styrene-butadiene rubber (SBR), nitrile rubber / polyvinyl chloride (NBR / PVC) and mixtures thereof, for example consisting of natural rubber (NR), isoprene Rubber (IR), chloroprene rubber (CR), ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM), nitrile rubber (NBR), styrene-butadiene rubber (SBR), and blends of it, educated. Here, the term "formed" means that the first region has no other polymers than the listed elastomers. However, the term "formed" does not exclude that the first range may include other compounds, for example, additives such as fillers, lubricants, etc.
    In a further embodiment of the present invention, the second region is formed from a fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units. Here, the term "formed" means that the second region has no other polymers than fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units. However, the term "formed" does not exclude that the first range may include other compounds, for example, additives such as fillers, lubricants, etc.
    In the context of a particularly preferred embodiment of the present invention, the first region comprises a wiper blade base body, a wiper lip extension and a wiper lip tip, wherein the wiper blade base body is connected to the wiper lip extension and the wiper lip attachment to the wiper lip tip, wherein the second region comprises a coating which at least the Wischlippenspitze partially covered. For example, the first region may consist of the wiper blade main body, the wiper lip extension and the wiper lip tip and / or the second region of the coating.
    Within the scope of a further, particularly preferred embodiment of the present invention, the first region comprises a wiper blade main body and a wiper lip extension, wherein the wiper blade main body is connected to the wiper lip extension, wherein the second region comprises a wiper lip tip, which is connected to the wiper lip extension. By way of example, the first region can consist of the wiper blade main body and the wiper lip extension and / or the second region can consist of the wiper lip tip.
    In the context of the present invention, the wiper blade main body may comprise a connecting element for fastening the wiper blade.
    Within the scope of a further, particularly preferred embodiment of the present invention, the fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units is extrudable and / or vulcanizable in the same temperature range as the elastomer of the first range. For example, the fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units may be extrudable at a temperature in a range of> 70 ° C to <150 ° C and / or at a temperature of> 180 ° C to <260 ° C, in particular from> 200 ° C to <240 ° C, vulcanizable and / or at a temperature of> 180 ° C to <260 ° C, in particular from> 200 ° C to <240 ° C, be resistant to processing. This has the advantage that the first and the second region can be coextruded in one process step.
    In a further, particularly preferred embodiment of the present invention, the fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units is selected from the group consisting of ethylene-tetrafluoroethylene copolymer (ETFE), ethylene-chlorotrifluoroethylene copolymer ( E-CTFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF) and mixtures thereof. These polymers have proven to be particularly advantageous in the context of the present invention.
    The wiper blade base body, the wiper lip extension and the wiper lip tip are preferably designed in one piece within the scope of the present invention.
    In a further, particularly preferred embodiment of the present invention, the coating covers the part of the wiper lip tip and / or the wiper lip attachment which, in the mounted state of the wiper lip
    J
    Blatts a glass, in particular windshield glass, contacted. In particular, the coating may cover at least the side surfaces and / or the end face of the wiper lip tip. Furthermore, the coating can at least partially cover the wiper lip approach. In addition, the coating may at least partially cover the wiper blade main body.
    In the context of a further, particularly preferred embodiment of the present invention, the wiper blade main body, the wiper lip extension and the wiper lip tip, in particular completely, are coated with the coating. The complete wiper blade may be coated with the coating. This has advantages, in particular with regard to the workability and installation of the wiper blade.
    For example, the coating may have a layer thickness ds of> 2μιτι to <100 μιτι, in particular of> 5 μιτι to <80 μιτι, preferably of> 10 μηη to <50 μιτι have.
    In another particularly preferred embodiment of the present invention, the coating is a powder coating, a co-extruded coating, a cast film, or a coating made by immersion in a solution comprising the fluoro- and / or chlorine polymer. In particular, the coating may be a powder coating.
    The average grain diameter of the powder of the powder coating is preferably in a range of> 1 μηη to <50 μηη, in particular from> 5 μηη to <30 μιτι, preferably from> 10 μιτι to <20 μιτι.
    In the context of a further, particularly preferred embodiment of the present invention, the wiper lip tip and the wiper lip approach are interconnected by co-extrusion.
    A further subject of the present invention is a process for producing a wiper blade according to the invention, in which a first element which is an elastomer selected from the group consisting of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR), Ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM), nitrile rubber (NBR), styrene-butadiene rubber (SBR), nitrile rubber / polyvinyl chloride (NBR / PVC) and mixtures thereof, and at least one second element comprising a fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units on at least a portion of the first element, by spraying a powder, in particular electrostatic powder coating Co-extrusion, by attaching a cast film or by immersion in a solution comprising the fluorine and / or chlorine polymer is formed.
    In the finished wiper blade, the first element represents the first region of the wiper blade and the second element represents the second region of the wiper blade. For example, the wiper blade body, the wiper lip extension and the wiper lip tip as the first element and the coating as the second element; or the wiper blade body and the squeegee approach as the first element and the. Wischlippenspitze be formed as a second element.
    The provision of the first element and the formation of the second element can advantageously take place in a method step in the case of coextrusion.
    Within the scope of one embodiment of the method according to the invention, therefore, the second element is coextruded with the first element, in particular at a temperature of> 70 ° C. to <150 ° C.
    In a further embodiment of the method according to the invention, the first and second element, in particular at a temperature of> 180 ° C to <260 ° C, in particular from> 200 ° C to <240 ° C, vulcanized.
    Within the scope of a further embodiment of the method according to the invention, the solution comprising fluorine and / or chlorine polymer has a temperature of> 90 ° C., in particular of> 110 ° C.
    With regard to further technical features of the method according to the invention, reference is hereby explicitly made to the statements in connection with the wiper blade according to the invention.
    drawings
    Further advantages and advantageous embodiments of the subject invention are illustrated by the drawings and explained in the following description. It should be noted that the drawings have only descriptive character and are not intended to limit the invention in any way. Show it:
    1 shows a schematic cross section through a first embodiment of a wiper blade according to the invention, in which the wiper lip tip and the wiper lip approach are at least partially covered with a powder coating;
    2 shows a schematic cross section through a second embodiment of a wiper blade according to the invention, in which the wiper blade base body, the wiper lip extension and the wiper lip tip are completely coated with a powder coating;
    3 shows a schematic cross section through a third embodiment of a wiper blade according to the invention, in which the wiper lip tip and the wiper lip approach are at least partially covered by a coating produced by coextrusion; and FIG. 4 shows a schematic cross section through a fourth embodiment of a wiper blade according to the invention, in which the wiper lip tip comprises a fluorine and / or chlorine polymer containing hydrogen atoms and / or ethylene units.
    Figures 1 to 4 show that a wiper blade according to the invention is integrally formed and a wiper blade body 1, a squeegee lip 2a and a wiper lip tip 2b comprises, the wiper blade body 1 is connected to the Wischfippenansatz 2a and the wiper lip extension 2a with the wiper lip tip 2b. Figures 1 to 4 further show that the wiper blade main body 1 in the embodiments shown comprises a connecting element 4 for securing the wiper blade.
    In the context of the embodiments shown in FIGS. 1 to 3, the wiper blade main body 1, the wiper lip extension 2a and the wiper lip tip 2b are made of an elastomer selected from the group consisting of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR ), Ethylene-propylene-diene rubber (ERDM), ethylene-propylene rubber (EPM), nitrile rubber (NBR), stryric-butadiene rubber (SBR) and mixtures thereof, wherein at least one coating 3, which is formed from a hydrogen and / or ethylene units containing fluorine and / or chlorine polymer, at least the wiper lip tip 2b partially covered.
    In the context of the first embodiment shown in FIG. 1, the coating 3 is a powder coating. FIG. 1 shows that the two side surfaces 5 of the wiper lip tip 2b and part of the two side surfaces 6 of the wiper lip attachment 2a are each covered with a powder coating 3. The end face 7 of the wiper lip tip 2b is not coated in the context of the embodiments shown in FIGS. 1 and 3.
    However, as shown in FIG. 2, in the context of the present invention, the end face 7 of the wiper lip tip 2 b may also be covered with a coating 3. The coating 3 shown in FIG. 2 is, analogously to the coating 3 shown in FIG. 1, a powder coating. In contrast to the first embodiment shown in FIG. 1, in the context of the second embodiment shown in FIG. 2, the wiper blade base body 1, the wiper lip extension 2 a and the wiper lip tip are completely coated with a powder coating 3.
    In the third embodiment shown in FIG. 3, the coating 3 is a coating produced by coextrusion. FIG. 3 shows that, analogously to the coatings 3 shown in FIG. 1, the two side surfaces 5 of the wiper lip tip 2b and a part of the two side surfaces 6 of the wiper lip attachment 2a are each covered with a coating 3.
    FIG. 4 shows a fourth embodiment of a wiper blade according to the invention. In the context of these embodiments, the wiper blade main body 1 and the wiper lip extension 2a are made of an elastomer selected from the group consisting of natural rubber (NR), isoprene rubber (IR), chloroprene rubber (CR), ethylene-propylene-diene rubber (EPDM ), Ethylene-propylene rubber (EPM), nitrile rubber (NBR), styrene-butadiene rubber (SBR), and mixtures thereof, wherein the wiper lip tip 2b is made of a fluorine atom containing hydrogen atoms and / or ethylene units / or chlorine-polymer is formed. In the context of this embodiment, the wiper lip extension 2a and the wiper lip tip 2b were interconnected by co-extrusion.
    权利要求:
    Claims (18)
    [1]
    ANSPRÜCHE
    [2]
    Ansprüche
    [3]
    1. Wischblatt, aufweisend
    [4]
    einen ersten Bereich (1,2a, 2b; 1,2a), welcher ein Elastomer, ausgewählt aus der Gruppe besthend aus Naturkautschuk (NR), Isopren-Kautschuk (IR), Chloropren-Kautschuk (CR), Ethylen-propylen-Servie Kautschuk (EPDM), Ethylen-Propylen-Kautschuk (EPM), Nitrile-Kautschuk (NBR), Stryrol-Butadien-Kautschuk (SBR), Nitrile-Kautschuk / Polyvinyl chloride (NBR / PVC) und Mischungen davon, umfasst, und
    [5]
    mindestens einen mit dem ersten Bereich (1,2a, 2b; 1, 2a) zumindest teilweise verbundenen zweiten Bereich (3; 2b), wobei der zweite Bereich (3; 2b) a Wasserstoffatome und / oder Ethylen-Einheiten enthaltendes Fluor- und / oder Chlor-Polymer umfasst, dadurch charactnzeichnet, dass das Wasserstoffatome und / oder Ethylen-Einheiten enthaltende Fluor und / or Chlor-Polymer aus der Gruppe, besthend aus Ethylen-Tetrafluorethylen-Copolymer, Ethylen-Chlortrifluorofluorophenyl-ethylene-polyphenyl-polyfluoro-ethylen-polyfluorophone-ethylene-polyfluoroprene ausgewählt ist.
    [6]
    2. Wischblatt nach Anspruch 1, dadurch charactnzeichnet, dass
    [7]
    der erste Bereich (1,2a, 2b) einen Wischblattgrundkörper (1), einen Wischlippenansatz (2a) und eine Wischlippenspitze (2b) umfasst, wobei der Wischblattgrundkörper (1) mit dem Wischlippenansatz (2a) und der Wischlippansatz (der) 2) 2b) bünden ist, wobei der zweite Bereich (3) eine Beschichtung (3) umfasst, welche zumindest covering Wischlippenspitze (2b) teilweise, und / oder der erste Bereich (1, 2a) einen Wischblattgrundkörper (1) und einen Wischlippen (1) ) umfasst, wobei der Wischblattgrundkörper (1) mit dem Wischlippenansatz (2a) connected, wobei der zweite Bereich (2b) eine Wischlippenspitze (2b) umfasst, welche mit dem Wischlippenansatz (2c) connected.
    [8]
    3. Wischblatt nach Anspruch 1 oder 2, dadurch charactnzeichnet, dass das das Wasserstoffatome und / oder Ethylen-Einheiten enthaltende Fluor- und / or Chlor-Polymer des zweiten Bereiches (3; 2b) im gleichen Temperaturbereich
    [9]
    die das Elastomer des ersten Bereiches (1, 2a, 2b; 1, 2a) extrudierbar und / or vulcanisierbar ist.
    [10]
    4. Wischblatt nach Anspruch 2 or 3, dadurch charactnzeichnet, dicht die Beschichtung (3) the Teil der Wischlippenspitze (2b) and / or the Wischlippenansatzes (2a), welcher im montierten Zustand des Wischblatts eine Glasscheibe contact.
    [11]
    5. Wischblatt nach einem der Ansprüche 2 bis 4, dadurch charactnzeichnet, dass der Wischblattgrundkörper (1), der Wischlippenansatz (2a) und die Wischlippenspitze (2b) mit der Beschichtung (3) überzogen sind.
    [12]
    6. Wischblatt nach einem der Ansprüche 2 bis 5, dadurch charactnzeichnet, dass die Beschichtung (3) eine Pulverbeschichtung, eine durch Co-Extrusion hergestellte Beschichtung, eine Gießfolie oder eine durch Eintauchen in eine das Fluor- und / oder Chlorassen-Polymer-umfung hergestellte Beschichtung ist.
    [13]
    7. Wischblatt nach Anspruch 6, dadurch charactnzeichnet, das der Korndurchmesser des Pulvers der Pulverbeschichtung in a 1 hour bis <50 pm lie.
    [14]
    8. Wischblatt nach einem der Ansprüche 2 bis 7, dadurch charactnzeichnet, dass die Beschichtung eine Schichtdicke von> 2 pm bis <100 pm aufweist.
    [15]
    9. Wischblatt nach einem der Ansprüche 2 bis 8, dadurch charactnzeichnet, dass die Wischlippenspitze (2b) und der Wischlippenansatz (2a) durch Co-Extrusion miteinander binded sind.
    [16]
    10. Verfahren zur Herstellung eines Wischblatts nach einem der Ansprüche 1 bis 9, in dem
    [17]
    Element in element (1, 2a, 2b; 1, 2a), Welches in Elastomer, ausgewählt aus der Gruppe bestehend aus Naturkautschuk (NR), Isopren-Kautschuk (IR), Chloropren-Kautschuk (CR), Ethylen-propylen-Serv- Kautschuk (EPDM), Ethylen-Propylen-Kautschuk (EPM), Nitrile-Kautschuk (NBR), Stryrol-Butadien-Kautschuk (SBR), Nitrile-Kautschuk / Polyvinyl chloride (NBR / PVC) und Mischungen davon, umfasst, ready-to-assemble wird,
    [18]
    auf zumindest einem Teil des ersten Elementes (1, 2a, 2b; 1, 2a) mindestens ein zweites Element (3; 2b), welches ein Wasserstoffatome und / oder Ethylen-Einheiten enthaltendes Fluor- und / or Chlor-Polymer umfasst, durch Aufsprühen eines Pulvers, durch Co-Extrusion, durch Anbringen einer Gießfolie oder durch Endings in a tie Fluor-und / or Chlor-Polymer umfassende Lösung ausgebildet wird.
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    同族专利:
    公开号 | 公开日
    FR2942757A1|2010-09-10|
    DE102009001365A1|2010-09-09|
    FR2942757B1|2014-12-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB2154864A|1984-03-02|1985-09-18|Honda Motor Co Ltd|Wiper blade|
    EP0437806A2|1990-01-08|1991-07-24|Acushnet Company|Windshield wiper blade|
    JPH0597015A|1991-10-03|1993-04-20|Polytec Design:Kk|Wiper blade for car|
    DE19615421A1|1996-04-19|1997-10-23|Bosch Gmbh Robert|Strong environmentally-resistant windscreen wiper blade|
    WO1999039948A1|1998-02-09|1999-08-12|Robert Bosch Gmbh|Wiper blade|
    WO2003078511A1|2002-03-19|2003-09-25|Robert Bosch Gmbh|Windshield wiper blade and method for the production thereof|
    DE102005000851A1|2004-02-09|2005-08-25|Robert Bosch Gmbh|Window wiper blade for a vehicle has a rubber wiper lip onto which polymer film or granulate is applied|
    DE19612081A1|1996-03-27|1997-10-02|Bosch Gmbh Robert|wiper blade|
    DE19814804A1|1998-04-02|1999-10-07|Bosch Gmbh Robert|Wiper rubber with a protective layer|
    JP3476676B2|1998-05-22|2003-12-10|横浜ゴム株式会社|Wiper blade|
    DE102007036780A1|2007-08-03|2009-02-05|Robert Bosch Gmbh|Process for producing a coated elastomer profile, an elastomer profile and its use|DE102012209233A1|2012-05-31|2013-12-05|Robert Bosch Gmbh|Squeegee profile of an elastomeric material, useful for cleaning glass surfaces of motor vehicles, comprises a base portion and a lip portion, in which the lip portion has a surface made of a material with a lower frictional coefficient|
    DE102013201093B4|2013-01-24|2020-10-22|Robert Bosch Gmbh|Squeegee rubber with replacement notice|
    DE102016213862A1|2016-07-28|2018-02-01|Robert Bosch Gmbh|Method and tool for producing a wiper blade for wiper blades of windscreen wipers|
    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
    DE200910001365|DE102009001365A1|2009-03-06|2009-03-06|Wiper blade for motor vehicle, has wiping cloth attachment connected with wiping cloth tip, and powder-coating region partially connected with another region and including hydrogen atom and/or ethylene-unit with fluoro- and/or choro-polymer|
    DE102009001365|2009-03-06|
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