CN118205520A

CN118205520A - Wiper lever

Info

Publication number: CN118205520A
Application number: CN202311733129.9A
Authority: CN
Inventors: A·斯坦尼西奇
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2022-12-16
Filing date: 2023-12-15
Publication date: 2024-06-18
Also published as: DE102022213749A1; FR3143499A1

Abstract

The invention relates to a wiper lever (10), in particular for a motor vehicle. The wiper arm comprises a wiper blade (14) and a wiper arm (12) having a hinge part (18) and a fastening part (16) fastened thereto by means of a hinge (20) for fastening thereto a wiper device, the fastening part having at least one first holding element (36) for a channel element (32), in particular a hose. According to the invention, a first holding element (36) is arranged in the region of the hinge (20) and a second holding element (38) is arranged in the region of the cover surface (40) of the fastening part (16).

Description

Wiper lever

Technical Field

The present invention relates to a wiper lever of the type specified in the independent claim, in particular for motor vehicles.

Background

A large number of wiper levers are known, which have a wiper blade and a wiper arm with a hinge part and a fastening part fastened at the hinge part by means of a hinge for fastening at a wiper device. At least one holding element for a passage element, in particular a hose, is provided.

Disclosure of Invention

The invention has the advantages.

The wiper lever according to the invention having the features of the main claim has the advantage that the first holding element is arranged in the region of the hinge and the second holding element is arranged in the region of the covering surface of the fastening part. In this way, the hose is reliably prevented from coming into contact with the window pane to be wiped during wiping.

Advantageous refinements and improvements of the features specified in the main claim result from the measures recited in the dependent claims.

In an easy, inexpensive and thus advantageous embodiment, the first holding element is configured as a holding clip.

A particularly efficient and thus advantageous embodiment is obtained by: the second holding element is configured as an opening with a fastening element.

In this case, it is easy, inexpensive and therefore advantageous for the fastening element to be designed as a clamping finger.

In particular, it is inexpensive, easy and therefore advantageous if the fastening part is formed from sheet metal, in particular as a stamped bent part.

It is furthermore considered to be advantageous if the fastening part has, at least in sections, an inverted U-shaped structure with a base, which forms a cover surface, and two limbs. Such an inverted U-shaped structure advantageously has a high stability with low material outlay.

In this case, it is efficient, inexpensive and therefore advantageous for the first holding element to be arranged on at least one of the support arms.

It is particularly efficient and therefore advantageous for the first holding element to hold the channel element movably.

In an advantageous manner, the hinge part and the fastening part are connected in a spring-loaded manner by means of a tension spring. Good wiping results are thereby obtained in an advantageous manner.

In this case, it is particularly advantageous if the tension spring is fastened to the fastening part by means of a spring holding means, and the spring holding means is arranged close to the first holding element for guiding the channel element, since a cost-effective holding of the channel element is thereby obtained.

Drawings

Embodiments of the invention are illustrated in the accompanying drawings and explained in more detail in the following description. Wherein:

Figure 1 shows a schematic side view of a wiper arm according to the invention without a wiper blade,

Figure 2 shows in a perspective view the fastening part of the wiper arm according to the invention together with the channel element,

Figure 3 shows in a perspective view the fastening part of the wiper lever according to the invention,

Fig. 4 shows a first holding element of a wiper arm according to the invention, and

Fig. 5 shows a second holding element of a wiper arm according to the invention.

Detailed Description

Fig. 1 shows a schematic side view of a wiper lever 10 according to the invention. The wiper arm 10 according to the invention comprises a wiper arm 12 and a wiper blade 14. The wiper arm 12 in turn comprises a fastening part 16 and a hinge part 18. The fastening part 16 and the hinge part 18 are connected in a hinged manner to each other by means of a hinge 20.

The fastening part 20 has an elongated shape and is constructed in the shape of an inverted U in cross section. At the end of the longitudinal extension of the fastening part, a fastening hole 22 is provided for fastening the fastening part 20 at the wiper shaft of a windscreen wiper device of a motor vehicle. At the other end of the longitudinal extension of the fastening part a hinge 20 is arranged, by means of which the fastening part 16 is connected with the hinge part 18.

The hinge part 18 is likewise elongate in shape and is connected in an articulated manner from its end of the longitudinal extension to the fastening part 16 by means of a hinge 20. Facing away from the hinge 20, the hinge part 18 has along its longitudinal extension a free end 24, at which the wiper blade 14 is arranged. Along its longitudinal extension, the hinge part 18 here has a fastening section 26 which is arranged at the side facing the hinge 20 and is configured in an inverted U-shape like the fastening part 16. On the side facing away from the hinge 20, i.e. facing the free end 24, the hinge part 18 has a rod section 28, which is connected, for example crimped, to the fastening section 26.

When the fastening part 16 is fastened to the wiper shaft, the hinge part 18 can be turned upwards by the hinge 20 along the directional arrow P into the assembly position, for example if the wiper blade 14 should be replaced.

The hinge part 18 and the fastening part 16 are furthermore connected in a spring-loaded manner by means of a spring means 30, for example a leaf spring or a tension spring. The spring means 30 is responsible for pressing the free end 24 of the wiper arm 12 and thus the wiper blade 14 against the window pane to be wiped, i.e. against the directional arrow P, during operation.

For transporting the cleaning agent in the direction of the free end 24 of the wiper arm 12, a channel element 32 is furthermore provided, which is typically designed as a hose. The channel element 32 is arranged essentially, in particular in the region of the hinge part 18, along the longitudinal extension L of the wiper arm 12 on the underside of the wiper arm 12 facing the window pane to be wiped.

The channel element 32 is introduced into the fastening part 16 from above through the cover surface 34 (fig. 3) and extends therefrom at the underside of the fastening part 16 and the hinge part 18 facing the window pane to be wiped in the direction of the free end 24.

In order to be able to turn the hinge part 18 in the direction of the directional arrow P, the channel element 32 has an excess length, which is formed by a U-shaped snap ring 34.

For this purpose, the fastening part 16 has a first holding element 36 (fig. 2) and a second holding element 38 (fig. 2), between which the snap ring 34 is formed.

Fig. 2 shows a perspective view of the fastening part 16 of the wiper arm 10 according to the invention together with the channel element 32.

The fastening part 16 is of inverted U-shaped design and thus has a cover surface 40 from the edges of which the limbs 42 each extend. The channel element 32, i.e. the hose, is guided through the cover surface 40 and is fastened there by the second holding element 38. Below the fastening part 16, the channel element 32 is guided with the formation of the snap ring 34 towards the first holding element 36.

The first holding element 36 is embodied in the manner of a clip and extends from the free end of one of the arms 42 in the direction of the other arm 42, i.e. in the direction of the inner side of the fastening part 16.

Furthermore, the fastening part 16 has a spring retaining element 44. The spring retaining element 44 is here embodied as a screw, which extends from the arm 42 toward the other arm 42. In a variant of the invention, the spring retaining element 44 can however also be configured differently, for example as a plate web. The spring retaining element 44 serves to fasten the spring means 30 (fig. 1) at the fastening part 16.

The channel member 32 is held between the first holding member 36 and the spring holding member 44. The channel element 32 is held in this case in such a way that it can be moved along its longitudinal extension. The hose forming the channel element 32 can thus be displaced between the spring retaining element 44 and the first retaining element 36 embodied as a clip.

The second retaining element 38 is arranged in the cover surface 40. The second holding element 38 holds the channel element 32, i.e. the hose, in such a way that the channel element 32 cannot be pushed over, but rather is held firmly.

Above the spring holding means 44, i.e. closer to the cover surface 40 of the fastening part 16 than the spring holding means 44, a hinge hub 46 is furthermore arranged, which is part of the hinge 20 (fig. 1) and serves to fasten the hinge part 18.

The fastening part 16 is shown from below in a perspective view in fig. 3. The channel element 32 has been omitted from this figure for clarity reasons.

The fastening part 16 is constructed as an elongated stamped bent piece of sheet material and has a substantially inverted U-shape. Thereby providing a cover surface 40 with arms 42. At the end of the longitudinal extension of the fastening part a fastening hole 22 is arranged. At the end of the longitudinal extension of the fastening part facing away from the fastening hole 22, a hinge hub 46 is arranged. Adjacent to the hinge hub 46, however slightly spaced apart, are arranged spring retaining means 44 and first retaining element 36, through which the channel element 32 from fig. 2 can pass.

The shielding surface 40 has the second retaining element 38 adjacent to the fastening hole 22, however at a slight distance. The second retaining element 38 is arranged in the opening 48 and is configured as a retaining clip.

The region of the first retaining element 36 from the fastening component 16 of fig. 3 is again shown in detail in fig. 4. The arm 42 extends from the cover surface 40. A hinge hub 46 is disposed between the arms 42. Above the hinge hubs 46, spring retaining means 44 are arranged, which extend between the arms 42. The free end of one of the arms 42 facing away from the cover surface 40 has a collar-like projection which forms the first holding element 36. The diameter of the channel member 32 (fig. 2) is slightly smaller than the spacing between the first retaining element 36 and the spring retaining means 44.

In fig. 5, the region of the cover surface 40, in which the second retaining element 38 is arranged, is shown in detail, viewed from below.

From the cover surface 40, the limb 42 protrudes at the edge of the cover surface. The cover surface 40 has an opening 48 in which the second holding element 38 is arranged.

The opening 48 is configured in a door-like manner, i.e. approximately rectangular, but is configured semi-circular on the sides. The semicircular sides are arranged on the sides of the opening 48 facing away from the fastening hole 22. On the planar side facing away from the semicircular side, a second holding element 38 is provided, which is of clip-like design, i.e. comprises two clamping clips as fastening elements 50, which protrude from the planar side in the direction of the semicircular side of the opening 48. Thereby, a narrow region is obtained at the free end of the clamping band, through which the channel element 32 can be introduced.

The channel element 32 is held firmly between the clamping jaws of the fastening element 50 as the second holding element 38 in the assembled position and cannot be displaced. The term "non-displaceable" in this respect is to be understood as a firm connection in the case of normal operating conditions. The channel element 32 can be pulled out of the clamping collar as the fastening element 50, i.e. out of the second holding element 38, with increased power consumption.

The opening 48 with the second holding element 38 is produced by punching from the cover surface 40. Typically, this stamping is already achieved prior to the bending process of the fastening part 16.

If the hinge part 18 is turned over in the assembled position, i.e. when the fastening part 16 is firmly connected to the wiper shaft of the windscreen wiper device, the snap ring 34 of the channel element 32 is narrowed such that no tensile stress loads the channel element 32 between the second holding element 38 and the hinge part 18. The size of the snap ring 34 is selected such that, on the one hand, touching of the region of the motor vehicle underneath the wiper arm 12 by the channel element 32 is prevented, and, on the other hand, tensile loads on the channel element 32 are prevented when the hinge part 18 is inverted.

Claims

1. A wiper lever (10), in particular for a motor vehicle, comprising a wiper blade (14) and a wiper arm (12) having a hinge part (18) and a fastening part (16) fastened thereto by means of a hinge (20) for fastening at a wiper device, the fastening part having at least one first holding element (36) for a channel element (32), in particular a hose,

Characterized in that the first holding element (36) is arranged in the region of the hinge (20) and in that a second holding element (38) is arranged in the region of a cover surface (40) of the fastening part (16).

2. The wiper lever (10) according to claim 1, characterized in that the first holding element (36) is configured as a holding clip.

3. The wiper lever (10) according to one of the preceding claims, characterized in that the second holding element (38) is configured as an opening with a fixing element (50).

4. A wiper blade (10) according to claim 3, characterized in that the fixing element (50) is configured as a clamping clip.

5. The wiper lever (10) according to one of the preceding claims, characterized in that the fastening part (16) is formed from a sheet material, in particular as a stamped bent part.

6. The wiper lever (10) according to one of the preceding claims, characterized in that the fastening part (16) has, at least in sections, an inverted U-shaped structure with a base, which forms the cover surface (40), and two limbs (42).

7. The wiper lever (10) according to claim 6, characterized in that the first holding element (36) is arranged at least one of the arms (42).

8. The wiper lever (10) according to one of the preceding claims, characterized in that the first holding element (36) movably holds the channel element (32).

9. The wiper lever (10) according to one of the preceding claims, characterized in that the hinge part (18) and the fastening part (16) are connected in a spring-tensioned manner by means of a spring device (30).

10. The wiper lever (10) according to claim 9, characterized in that the tension spring is fastened at the fastening part (16) by means of a spring retaining means (30), and in that the spring retaining means (44) are arranged close to the first retaining element (36) for guiding the channel element (32).