Wiper Arm Nozzle Protrusion for Window Cleaning
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Solution Overview
Problem
Existing wiper devices for motor vehicles often have nozzle elements that are not optimally positioned or designed for efficient water distribution across the wiper blade, leading to incomplete window cleaning and potential interference with the driver's view.
Innovation Solution
A wiper device with a nozzle element directly connected to the wiper arm, positioned to protrude at least 10 mm below the arm's lower edge, featuring multiple spray channels angled to target both the inner and outer circles of the wiper blade, ensuring comprehensive water distribution without obstructing the driver's view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the nozzle element is positioned higher on the wiper arm, then the driver's view is less obstructed, but the wiper water cannot be effectively applied to the wiper lip
Solution Approach 1:
The nozzle element is extended in the vertical dimension to protrude below the lower edge of the wiper arm, achieving effective water application to the wiper lip without requiring horizontal positioning that would obstruct the driver's view. This dimensional extension resolves the spatial conflict between functional effectiveness and visual obstruction.
2Ease of operation
If the nozzle element protrudes significantly below the wiper arm, then the wiper water can be effectively applied to the wiper lip, but the nozzle element may interfere with the driver's view
Solution Approach 1:
The nozzle element is designed with selective protrusion - it extends below the wiper arm's lower edge only in the specific region where water application is needed, while maintaining a compact profile in other areas. This localized extension achieves effective water distribution to the wiper lip while minimizing overall visual obstruction.
3Ease of manufacture
If the nozzle element is integrated into the wiper arm as a single component, then manufacturing is simplified, but the nozzle element cannot be easily replaced or adjusted
Solution Approach 1:
The wiper arm assembly is divided into separable components - the nozzle element is designed as a distinct, detachable part that can be independently replaced or adjusted. This segmentation maintains manufacturing simplicity while enabling easy maintenance and repair of the nozzle element without replacing the entire wiper arm.
4Ease of operation
If the nozzle element is positioned to spray water in all directions, then comprehensive water distribution is achieved, but water may spray towards the driver impairing visibility
Solution Approach 1:
The nozzle element employs asymmetric spray channel positioning and angling - the spray channels are oriented at specific angles that distribute water comprehensively across the wiper lip while directing the spray away from the driver's position. This asymmetric configuration achieves thorough water distribution without creating harmful spray patterns toward the driver.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for effective and efficient cleaning of the motor vehicle window, ensuring the wiper water is applied advantageously across the wiper lip, enhancing visibility and ease of use by preventing water from impairing the driver's view.
Implementation Method 1
a nozzle element that is provided for spraying a wiper water
Data Source
Figure 1~2
Figure 3
AI summary
The invention is based on a wiper device with at least one wiper arm (10a; 10b; 10c) and with at least one nozzle element (12a; 12b, 14b; 12c) which is provided for spraying wiping water. It is proposed that the at least one nozzle element (12a; 12b, 14b; 12c) is directly connected in a low position to the wiper arm (10a; 10b; 10c).