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Wiper arm

A technology of wiper arm and bolt rod, which is applied in the field of wiper arm to achieve the effect of material saving

Active Publication Date: 2013-07-24
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a loss of support for the wiper arm, since the spring length is shortened due to the spring embedded in the plate
In addition, dimples and burrs on the surface of the spring carrier resulting from the production of the spring carrier can lead to undesirable noise generation during operation of the wiper arm

Method used

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  • Wiper arm
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 Wiper arm 10 is shown with hinged part 11 and fastening part 12 . The articulation part 11 is articulated on the fastening part 12 , so that a wiper blade, not shown in detail here, is pivotably arranged on the wiper arm 10 . In this way, the wiper blade can be pivoted away from the window glass and can be pivoted into engagement on the window glass.

[0030] A C-shaped hook 14 is hung at the bolt bar 13, a spring 15 is hung in the hook, and the spring 15 is hung at the hinge 11 again in the same way.

[0031] figure 2 A fastening part 20 with two webs 21 and 22 and a pin 23 is shown. The webs 21 and 22 are bent towards the inside of the fixing part 20 . As a result, the bolt rod 23 has a relatively short length. Due to the relatively short length of the pin 23 , deflections can be reduced and thus a maximum bearing force of the wiper arm 10 can be ensured.

[0032] Tab 21 has a through hole 30 (see image 3 ), the bolt rod 23 passes through the throug...

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Abstract

The arm (10) has a sheet metal fastening part (12) provided with two lugs for retaining bolts (13), where one of the lugs is bent to an interior of the fastening part. The lugs comprise u-shaped or L-shaped recesses, where the bolts arranged in the u-shaped recesses are clamped. An independent claim is also included for a method for manufacturing a sheet metal fastening part of a wiper arm.

Description

technical field [0001] The invention relates to a wiper arm of a wiper device with a fastening element. Background technique [0002] Following the development from cast mountings to sheet metal mountings (Blechbefestigungsteilen), with this development a spring carrier made of sheet metal for receiving the spring is also provided on the sheet metal mounting. However, with a spring carrier made of sheet metal, it can happen that the spring becomes embedded in the sheet metal of the spring carrier over time. This results in a loss of support for the wiper arm, since the spring length is shortened due to the spring embedded in the sheet metal. In addition, dimples and burrs on the surface of the spring carrier resulting from the production of the spring carrier can lead to the generation of undesired noises during operation of the wiper arm. Contents of the invention [0003] It is therefore the object of the present invention to improve a wiper arm of the type mentione...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60S1/34
CPCB60S1/3438B60S1/3468
Inventor S·迈耶A·斯米特
Owner ROBERT BOSCH GMBH
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