Wiper arm, in particular for motor vehicle

Abstract

The invention relates to a wiper arm, in particular for a motor vehicle. The wiper arm includes a substantially inverted U-shaped fastener, a hinge, and a hose. According to the invention, the fastener has a connecting piece for fixing the hose.

Description

Field of the Invention

[0001] The present invention relates to a wiper arm according to the preamble of the independent claim. Background Art

[0002] Some wiper arms are known which have a substantially inverted U-shaped fastening member, a hinge member, and a hose. A cleaning fluid can be guided through the hose and applied to the window pane to be wiped either by a wiper blade mounted at the end of the wiper arm or by a nozzle arranged at the wiper arm. Summary of the Invention

[0003] Advantages of the present invention.

[0004] The wiper arm having the features of the main claim according to the present invention has the advantage that the fastening member has a connecting piece for fixing the hose. Thereby, it is reliably and inexpensively prevented that the hose touches and thereby wears the window pane to be wiped.

[0005] Furthermore, advantageous improvements and refinements of the features specified in the main claim are obtained by the measures recited in the dependent claims.

[0006] Advantageously, the inverted U-shaped fastening member has a base, a first arm, and a second arm, and the connecting piece extends from the first arm, in particular from the edge of the first arm facing away from the base, in the direction of the second arm and / or the base, since in this way the hose is reliably clamped and is hardly visible, in particular from above and from the side.

[0007] A particularly reliable and thus advantageous clamping of the hose is obtained in that the length of the connecting piece transverse to the longitudinal direction of the fastening member corresponds to at least one third, in particular at least half, of the width of the spacing (A) between the first arm and the second arm.

[0008] Advantageously, an even more reliable clamping is obtained by the connecting piece having a fixing member for fixing the hose.

[0009] Simple, inexpensive and thus advantageous, the fixing member includes a further connecting piece.

[0010] Particularly advantageous here is that the further connecting piece is formed from the inner region of the connecting piece. This is inexpensive and easy in terms of manufacturing.

[0011] A particularly good and thus advantageous fixing of the hose is obtained in that at least one further fixing member for the hose is provided at the fastening member, the further fixing member being arranged, in particular, at the end of the fastening member.

[0012] It is simple, cost-effective and thus advantageous for the fastener to be integrally constructed, in particular as a sheet metal bent part.

[0013] In a cost-effective embodiment, the fastener has two ends with respect to its longitudinal extension, wherein a fastening part, in particular a fastening hole, is provided in the region of one end, and a hinge section for fastening a hinge part is provided in the region of the other end. Description of the Drawings

[0014] The drawings show embodiments of the invention and are explained in more detail in the following description. Among them:

[0015] Figure 1 The wiper arm and the wiper blade according to the invention are shown in a schematic top view. Figure 2 The fastener of the wiper arm according to the invention is shown from below, and

[0016] Figure 3 Details of the fastener of the wiper arm according to the invention are shown. Detailed Description of the Invention

[0017] In Figure 1 the wiper arm 10 and the wiper blade 12 according to the invention are shown in a schematic top view, i.e., from above. The wiper arm 10 has a substantially longitudinally elongated shape with a longitudinal extension L and includes a fastener 14 for fastening the wiper arm 10 to the output shaft of a window pane wiper device. In addition, the wiper arm 10 includes a hinge part 16 which is hingedly connected to the fastener 14.

[0018] At the end of the hinge part 16 facing away from the fastener 14 with respect to the longitudinal extension L, a wiper rod 18 is fastened to the hinge part, and at the end of the wiper rod facing away from the hinge part 16, a fastening device 20 for fastening the wiper blade 12 is arranged.

[0019] At least one nozzle 22 is arranged at the fastening device 20, and a cleaning liquid can be supplied to the nozzle through a hose 24 ( Figure 2 ). The hose 24 is arranged inside the hinge part 16 and the fastener 14 below the wiper rod 18 here and is thus not visible.

[0020] In Figure 2 the fastener 14 is shown from below.

[0021] The fastener 14 has a shape that is inverted U-shaped in a transverse cross-section, or U-shaped in a view from below, and thus has a base 26 from which a first arm 28 and a second arm 30 extend.

[0022] The fastening element 14 has a first end 32 and a second end 34 along its longitudinal extension L. The first end 32 faces the hinge 16 and has a hinge part 36, so that the fastening element 14 is connected to the hinge 16 in an articulated manner. The second end 34 of the fastening element 14 facing away from the first end 32 along the longitudinal extension L has a fastening part 38, which is designed here as a fastening hole, that is, as a circular opening. The fastening part 38 serves to fasten the fastening element 14 to the output shaft of the windshield wiper device in a rotationally fixed manner.

[0023] The hose 24 is guided in the inner cavity formed by the base 26 and the arms 28 , 30 . The hose 24 is guided substantially between a first end 32 and a second end 34 of the fastener 14 .

[0024] A connecting piece 40 is arranged on the first branch 28 on the side facing away from the base 26 in a transverse section.

[0025] The connecting piece 40 extends from the edge of the first arm 28 facing away from the base 26 in the direction of the second arm 30 approximately parallel to the base 26 of the fastening element 14. However, in a variant of the invention, the connecting piece 40 can also extend partially in the direction of the base 26. In a further variant of the invention, the connecting piece 40 can also extend from an inner region of the first arm 28 instead of extending from the edge.

[0026] The width B of the connecting piece 40 is at least 1 / 3 of the distance A, which corresponds to the distance between the first arm 28 and the second arm 30. In a variant of the invention, the width B of the connecting piece 40 can also be greater than half of the distance A, in particular greater than 2 / 3 of the distance A.

[0027] The length of the connecting piece 40 in the region of the first leg 28 is here slightly greater than 1 / 3 of the total length of the fastening element 14. However, in a variant of the invention, the length of the connecting piece 40 can also be only approximately 1 / 5 of the total length of the fastening element 14 or up to 4 / 5 of the total length of the fastening element 14. In a further variant, the length of the connecting piece 40 can be between one quarter and three quarters of the total length of the fastening element 14.

[0028] The thickness of the connecting piece 40 corresponds to the thickness of the first leg 28. This allows an integral design, since the connecting piece 40 can be bent directly from the first leg 28 if the fastening element 14 is formed from sheet metal.

[0029] The connecting piece 40 furthermore has a fixing part 42. The fixing part 42 itself is formed as a tab-shaped section by bending the connecting piece 40 in the direction of the base 26. For this purpose, the connecting piece 40 has a substantially U-shaped cutout 44 which, in particular on its upper open side, faces away from the first arm 28, such that the interior of the U-shaped shape forms a tab-shaped section and thus the fixing part 42. The tab-shaped section is bent in the direction of the base 26 such that a projection is formed in the interior between the first arm 28 and the second arm 30, which projection limits the hose 24 in terms of its mobility. In a variant of the invention, the fixing part 42 can also be formed by a further projection, for example by a screw head or a rivet head, by a pin or the like.

[0030] In the region of the first end 32 of the fastening part 14, a further fixing part 46 is constructed, which further fixing part is likewise formed as a connecting piece and fixes the hose 24 downwards, i.e. in this view from below upwards, in the region of the articulation part 36.

[0031] In the region of the second end 34, an additional fixing part 48 is provided, which additional fixing part is formed as an opening in the second arm 30 and likewise fixes the hose 24. Alternatively, the additional fixing part 48 can also be arranged in the first arm 28. In Figure 3 the additional fixing part 48 is shown in detail again.

[0032] In Figure 3 the side wall of the fastening part 14 with the additional fixing part 48, i.e. the second arm 30, is shown in detail. The fixing part 48 has a keyhole-shaped design and thus comprises an opening which tapers in the direction of the edge of the second arm 30 facing away from the base 26, thereby producing a back cut. Through the back cut, the hose 24 can be pressed into the opening of the additional fixing part 48 and clamped securely there.

[0033] The fastening part 14 is integrally formed as a sheet metal bend. However, in a variant of the invention, the fastening part 14 can also be formed in multiple parts. A design as a casting is also considered. The hose 24 is made of plastic and is flexible.

Claims

1. A wiper arm (10), in particular for a motor vehicle, comprising a substantially inverted U-shaped fastening element (14), a hinge (16) and a hose (24), characterized in that: The fastening element (14) has a connecting piece (40) for fixing the hose (24).

2. The wiper arm (10) according to claim 1, characterized in that The inverted U-shaped fastening element (14) comprises a base (26), a first branch arm (28) and a second branch arm (30), and the connecting piece (40) extends from the first branch arm (28), in particular from an edge of the first branch arm (28) facing away from the base (26), in the direction of the second branch arm (30) and / or the base (26).

3. The wiper arm (10) according to claim 2, characterized in that A width (B) of the connecting piece (40) transversely to the longitudinal direction (L) of the fastening element (14) corresponds to at least one third, in particular at least half, of a width of a distance (A) between the first leg (28) and the second leg (30).

4. The wiper arm (10) according to any one of the preceding claims, characterized in that The connecting piece (40) has a fixing part (42) for fixing the hose (24).

5. The wiper arm (10) according to claim 4, characterized in that The fixing element (42) comprises an additional connecting piece.

6. The wiper arm (10) according to claim 5, characterized in that The further connecting piece is formed from an inner region of the connecting piece (40).

7. The wiper arm (10) according to any one of the preceding claims, characterized in that At least one further fastening element (46) for the hose (24) is provided on the fastening element (14), the further fastening element being arranged in particular at the end of the fastening element (14).

8. The wiper arm (10) according to any one of the preceding claims, characterized in that The fastening element (14) is designed in one piece, in particular as a bent sheet metal part.

9. The wiper arm (10) according to any one of the preceding claims, characterized in that The fastening element (14) has two ends (32, 34) with respect to its longitudinal extension, and a fastening component (38), in particular a fastening hole, is provided in the region of one end, and a hinge section (36) for fastening a hinge (16) is provided in the region of the other end.

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