• 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:
    In the case of a wiper blade for a windshield wiper, with a wiper strip (12) and at least one support rail (14), the at least one support rail (14) is designed with an essentially constant cross section in its axial direction and has a spring element (15), the one has a varying cross-section in the axial direction of the support rail (14).
    公开号:BE1019136A5
    申请号:E2010/0073
    申请日:2010-02-11
    公开日:2012-03-06
    发明作者:Block Peter De
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    description
    title
    Wiper blade for a windscreen wiper prior art
    The present invention relates to a wiper blade for a windshield wiper, with a wiper strip and at least one mounting rail.
    WO 2008/074551 A1 describes such a wiper blade, in which the support rail is realized by means of a spring unit formed by a spring steel sheet and enclosed by the wiper strip. This has on its top side of recesses formed on, notch-like formations, which, starting from a central region of the spring unit in the longitudinal direction respectively to the ends of the spring unit out towards differentiated to achieve a decreasing bending stiffness.
    A disadvantage of the prior art is that the notch-like formations are each different and form in an additional step on the spring unit. The preparation of the support rail forming spring unit is thus complicated and complicated.
    Disclosure of the invention
    An object of the invention is therefore to provide a new wiper blade for a windshield wiper, with an easy to manufacture support rail, which has a varying bending stiffness in the axial direction.
    This problem is solved by a wiper blade for a windshield wiper, with a .Wischleiste and at least one mounting rail. The min. At least one support rail is formed in its axial direction with a substantially constant cross-section and has a spring element which has a varying in the axial direction of the support rail cross-section.
    The invention thus makes it possible to provide a wiper blade with a carrier rail to be produced in a simple manner with a substantially constant cross section, the bending stiffness of which varies in the axial direction as a function of the respective cross section of the spring element. Thus, by the spring element, a substantially constant force distribution in the longitudinal extent of the wiper blade over different disc sections during use of the wiper blade can be generated.
    According to one embodiment, the spring element at least in sections, a rail-like solid profile.
    Thus, a simple and stable spring element can be provided.
    The rail-like solid profile preferably has a width in cross-section which is greater in the region of the wiper blade center than in the region of axial wiper blade ends. The rail-like solid profile preferably has a height in cross-section which is greater in the region of the wiper blade center than in the region of axial wiper blade ends.
    The invention thus makes it possible to provide a simple and inexpensive spring element, which has a greater rigidity in the region of the wiper blade center than in the region of the axial wiper blade ends.
    According to one embodiment, the spring element at least in sections on a rail-like hollow profile.
    Thus, a simple and stable spring element can be provided.
    In cross section, the rail-like hollow profile preferably has a wall thickness which is greater in the region of the wiper blade center than in the region of axial wiper blade ends.
    The invention thus makes it possible to provide a simple and inexpensive spring element, which has a greater rigidity in the region of the wiper blade center than in the region of the axial wiper blade ends.
    The spring element preferably has hardened steel, titanium, aluminum and / or plastic.
    The invention thus enables the provision of a stable spring element.
    According to one embodiment, the support rail on a plastic casing, which surrounds the spring element in the axial direction of the support rail at least in sections.
    Thus, a support rail with a predetermined corrosion resistance can be provided.
    The support rail has in cross-section preferably a width and height which are constant in the axial direction of the support rail.
    t
    Thus, the support rail according to the invention can be found in a variety of different wiper blades application, which are designed to use support rails with a constant cross-section.
    The wiper strip preferably has a back strip connected to a wiper lip, in the region of which the at least one support rail is arranged.
    The invention thus enables the provision of a simple, joint-free wiper blade.
    Brief description of the drawings
    The invention is explained in more detail in the following description with reference to exemplary embodiments illustrated in the drawings. Show it:
    1 is a side view of a wiper blade according to the invention,
    2 shows a perspective sectional view of the wiper blade of FIG. 1 with a mounting rail according to a first embodiment,
    3 is a sectional view of the support rail of FIG. 2, approximately in the region of the wiper blade center,
    4, a sectional view of the support rail of FIG. 2, approximately in the region of a wiper blade end, FIG.
    5 is a sectional view of a mounting rail according to a second embodiment, for example in the region of the wiper blade center, and
    Fig. 6 is a sectional view of the support rail of Fig. 5, approximately in the region of a wiper blade end.
    Description of the embodiments
    1 shows a wiper blade 10 with a wiper strip 12, which has a back strip 24 and a wiper lip 29. An adapter unit 16 for connecting a wiper arm 18, e.g. via a hinge pin 69, attached. With the aid of the wiper arm 18, the wiper blade 10 can be wiped over a dash-dotted disk 22, e.g. a vehicle window, are guided. According to one embodiment, the wiper blade 10 is designed as a joint-free wiper blade.
    In Fig. 1, the wiper blade 10 is not yet fully placed on the disc 22, there are only the axial wiper blade ends 21, 23 on the disc 22, while the wiper blade 12 in wiper blade center 26, i. approximately in the region of the adapter unit 16, is still spaced from the disc 22. If an intended contact pressure force is exerted on the A-daptereinheit 16 via the wiper arm 18, the wiper strip 12 bears against the pane 22 under the tension of an associated support rail (14 in FIG. 2). This tension ensures that a consistent contact pressure is maintained over the entire length of the wiper blade, even if the disc curvature changes as the wiper moves.
    FIG. 2 shows the wiper strip 12 of FIG. 1 with the wiper lip 29, which is connected to the back strip 24 via a tilting web 27. The back strip 24 has an example formed as a hollow channel longitudinal guide 25 for receiving a support rail 14, which is preferably designed as a spring rail.
    It should be understood, however, that the use of a single mounting rail is described by way of example only and not by way of limitation of the invention. Rather, several mounting rails can be used. For example, may be provided instead of the individual longitudinal guide 25 has two lateral guide grooves in the region of the back strip 24, in each of which a corresponding support rail is angéordnet.
    The support rail 14 preferably has a made of hardened steel, titanium, aluminum and / or plastic spring element 15 with a in a-xialer direction of the support rail 14 varying cross section, as described below. The spring element 15 may be encased in the axial direction of the support rail 14 at least in sections by a plastic casing 17.
    According to one embodiment, the support rail 14 has a substantially constant cross section in its axial direction or its longitudinal extension, i. the support rail 14 preferably has a width 11 and a height 13 which are constant in the axial direction of the support rail 14. The width 11 and the height 13 correspond approximately to the width and height of the hollow channel 25, in which the support rail 14 is inserted.
    Fig. 2 shows a first embodiment of the support rail .14. This will be described below with reference to FIGS. 3 and 4.
    FIG. 3 shows the support rail 14 of FIG. 2, in which the spring element 15 encased by the plastic jacket 17 is formed, at least in sections, by a rail-like solid profile 35. In particular, FIG. 3 shows a cross section of the mounting rail 14 formed approximately in the region of the wiper blade center 26 of FIG. 1.
    As can be seen from FIG. 3, in the region of the wiper blade center 26 of FIG. 1, the solid profile 35 has a width 31 and a height 32 which are only slightly smaller than the width 11 and height 13 of the support rail 14 of FIG. 2, for example. Thus, the plastic sheath 17 is formed in the region of the wiper blade center 26 of Fig. 1 only comparatively thin-walled. However, this is sufficient to ensure a given corrosion resistance of the support rail 14.
    FIG. 4 shows a cross-section of the support rail 14 of FIG. 3 approximately in the area of the axial wiper blade ends 21, 23 of FIG. 1. In this region, the solid profile 35 has a width 41 and a height 42 in cross-section, which are smaller, for example, than width 31 and height 32 of FIG. 3, ie Width and height of the solid profile in the region of the wiper blade center 26 of Fig. 1. Thus, the plastic sheath 17 in the region of the axial wiper blade ends 21, 23 of FIG. 1 is comparatively thick-walled, so that the support rail 14 in this area about the same width 11 and Has height 13 of Fig. 2, as in the region of the wiper blade center 26 of Fig. 1st
    As can be seen from FIGS. 3 and 4, the cross-sectional area of the solid profile 35 in the region of the wiper blade center 26 of FIG. 1 is greater than in the region of the axial wiper blade ends 21, 23 of FIG. 1, so that the spring element 15 in the region of the wiper blade center 26 has a greater size Stiffness than in the region of the axial wiper blade ends 21, 23. In this case, both the width, and the height of the solid profile 35 were varied over the longitudinal extent of the support rail 14, for example linear. It should be noted, however, that it is also possible to vary only one of these parameters and leave the other constant. For example, For example, the width 31 of FIG. 3 may be constant over the longitudinal extent of the support rail 14, while the height of the solid profile decreases toward the axial wiper blade ends 21, 23 of FIG.
    In the manufacture of the support rail 14 of Figures 3 and 4, the solid profile 35 is e.g. formed by rolling and profile cutting from a suitable round wire, and cured if necessary and shortened to a required length. The thus formed solid profile 35 is inserted for example in a plastic injection molding tool and encapsulated to form the plastic casing 17 with plastic. Subsequently, the support rail 14 produced in this way is bent. The plastic of the plastic casing 17 must therefore be comparatively soft, so that it does not crack during bending. Finally, the support rail 14 is mounted on the wiper blade 10 of Fig. 1, e.g. by insertion into the longitudinal guide 25 of FIG.
    Second
    5 shows a second embodiment of a support rail 54 with the spring element 15 of FIG. 2. In this case, the spring element 15 is at least partially formed by a rail-like hollow profile 55. FIG.
    FIG. 5 shows a cross section of the mounting rail 54 formed approximately in the region of the wiper blade center 26 of FIG. 1.
    As can be seen from FIG. 5, the hollow profile 55 in the region of the wiper blade center 26 of FIG. 1 has a wall thickness or thickness 51 in cross-section. According to one embodiment, the hollow profile 55 is merely painted in order to ensure a required corrosion resistance. Alternatively, however, the hollow profile 55 may also be encased by the plastic casing 17 of Fig. 2.
    FIG. 6 shows a cross-section of the support rail 54 of FIG. 5 approximately in the area of the axial wiper blade ends 21, 23 of FIG. 1. In this region, the hollow profile 55 has a wall thickness 61 in cross-section which is smaller than the wall thickness 51 of FIG 5, so that the cavity formed in the interior of the hollow profile 55 in the region of the axial wiper blade ends 21, 23 of FIG. 1 is comparatively larger than in the region of the wiper blade center 26 of FIG.
    As can be seen in Figures 5 and 6, the cross-sectional area of the hollow profile 55, i. 1, so that the spring element 15 has a greater rigidity in the region of the wiper blade center 26 than in the region of the axial wiper blade ends 21, 23. In this case, by way of example only the wall thickness of the hollow profile 55 was varied over the longitudinal extent of the support rail 14. It should be noted, however, that it is also possible to vary other dimensions of the hollow profile 55. For example, its width and / or height can be varied as in the solid profile 35 of Fig. 3 and 4.
    权利要求:
    Claims (14)
    [1]
    Ansprüche
    [2]
    1. Wischblatt (10) für einen Scheibenwischer, mit einer Wischleiste (12) und mindestens einer Tragschiene (14), dadurch charactnzeichnet, dass die mindestens eine Tragschiene (14) in ihrer axialen Richtung mit einem im Wesentlichen constants Querschnitt ausgebin element ist. (15) aufweist, das einen in axialer Richtung der Tragschiene (14) varying Querschnitt aufweist.
    [3]
    2. Wischblatt nach Anspruch 1, dadurch charactnzeichnet, dass das Federelement (15) zumindest abschnittsweise ein schienenartiges Vollprofil (35) aufweist.
    [4]
    3. Wischblatt nach Anspruch 2, dadurch charactnzeichnet, das das schienenartige Vollprofil (35) in the Querschnitt eine Breite (31,41) aufweist, which im Bereich der Wischblattmitte (26) as the Bereich axial Wischblattenden (21, 23).
    [5]
    4. Wischblatt nach Anspruch 2 or 3, dadurch charactnzeichnet, das das schienenartige Vollprofil (35) im Querschnitt eine Höhe (32, 44) aufweist, that im Bereich der Wischblattmitte (26) größer ist as im Bereich axialer Wischblattenden (21, 23) .
    [6]
    5. Wischblatt (10) für einen Scheibenwischer, mit einer Wischleiste (12) und einer Tragschiene (14), dadurch charactnzeichnet, dass die Tragschiene (14) ein Federelement (15) aufweist, das einen in axialer Richtung der Tragschiene (14) variantsden Querschnitt und zumindest abschnittsweise ein schienenartiges Hohlprofil (55) aufweist.
    [7]
    6. Wischblatt nach Anspruch 5, dadurch charactnzeichnet, das das schienenartige Hohlprofil (55) im Querschnitt eine Wanddicke (51, 61) aufweist, that im Bereich der Wischblattmitte (26) größer ist as im Bereich axialer Wischblattenden (21,23).
    [8]
    7. Wischblatt nach einem der vorhergehenden Ansprüche, dadurch charactnzeichnet, dass das Federelement (15) gehärteten Stahl, Titan, Aluminum and / or Kunststoff aufweist.
    [9]
    8. Wischblatt nach einem der vorhergehenden Ansprüche, dadurch
    [10]
    charactnzeichnet, dass die Tragschiene (14) eine Kunststoffummantelung (17) aufweist, that das Federelement (15) in axialer Richtung der Tragschiene (14) zumindest abschnittsweise.
    [11]
    9. Wischblatt nach einem der vorhergehenden Ansprüche, dadurch
    [12]
    charactnzeichnet, dass die Tragschiene (14) im Querschnitt eine Breite (11) und Höhe (13) aufweist, which is constantly found in the axialer Richtung der Tragschiene (14).
    [13]
    10. Wischblatt nach einem der vorhergehenden Ansprüche, dadurch
    [14]
    charactnzeichnet, dass die Wischleiste (12) eine mit einer Wischlippe (29) aunt Rückenleiste (24) aufweist, in the Bereich that tragschiene (14) angeordnet ist.
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    同族专利:
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    FR2942186A1|2010-08-20|
    DE102009000870A1|2010-08-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1074429B|1960-01-28|Robert Bosch Gmbh Stuttgart|Pendulum wipers|
    DE3936597A1|1989-11-03|1991-05-16|Bosch Gmbh Robert|WIPER BLADE|
    US6836925B1|1998-10-09|2005-01-04|Trico Products Corporation|Windscreen wiper|
    US6951043B1|1998-10-12|2005-10-04|Trico Products Corporation|Windscreen wiper|
    WO2002004266A2|2000-07-06|2002-01-17|Trico Products Corporation|Beam blade wiper assembly having varying cross-section|
    EP2135781A2|2008-06-10|2009-12-23|Robert Bosch Gmbh|Suspension spring, production method and wiper for cleaning, in particular a vehicle screen|
    DE202006009435U1|2006-06-16|2006-08-17|Fu Gang Co., Ltd., Chungho|Windscreen wiper, comprising central holding element and joint element with insertion pin|
    DE102006059926A1|2006-12-19|2008-06-26|Robert Bosch Gmbh|wiper blade|FR3014795B1|2013-12-16|2016-01-22|Valeo Systemes Dessuyage|WIPER BLADE FOR A VEHICLE GLASS WIPING SYSTEM AND METHOD OF ASSEMBLING THE SAME|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102009000870|2009-02-16|
    DE102009000870.5A|DE102009000870B4|2009-02-16|2009-02-16|Wiper blade for a windshield wiper|
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