Wiper Nozzle Unit for Uniform Water Distribution
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Solution Overview
Problem
Existing wiper devices for vehicle windows often fail to achieve a good wiping result while minimizing wash water consumption, and they do not provide uniform water distribution effectively across the window surface.
Innovation Solution
A wiper device with a nozzle unit comprising multiple nozzle elements arranged on opposite sides of the wiper arm, connected to flexible hoses, which discharge wash water in a fan shape parallel to the wiper arm's longitudinal direction, ensuring efficient water distribution and low consumption by alternating water flow between sides during up and down strokes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If wash water is applied to only one side of the wiper blade, then the device structure is simple, but the water distribution uniformity and wiping effectiveness are insufficient
Solution Approach 1:
The nozzle unit is divided into multiple independent nozzle elements (first nozzle element, second nozzle element, third nozzle element) arranged on opposite sides of the wiper arm. Each nozzle element can be independently connected to wash water hoses, allowing water to be distributed uniformly across both sides of the wiper blade, thereby resolving the contradiction between water distribution uniformity and structural complexity.
Solution Approach 2:
Different nozzle elements are positioned at specific locations on opposite sides of the wiper arm to create localized water application zones. The first and third nozzle elements apply water to the first side of the wiper blade, while the second nozzle element applies water to the second side, ensuring optimal local water distribution where needed most.
2Productivity
If multiple nozzle elements are used to apply water to both sides of the wiper blade, then wiping efficiency is improved, but the device complexity increases
Solution Approach 1:
Multiple nozzle elements are merged into a single integrated nozzle unit that is mounted on the wiper arm. This unified structure allows simultaneous water application to both sides of the wiper blade through multiple nozzle elements, improving wiping efficiency while maintaining a compact and manageable device structure.
Solution Approach 2:
The nozzle unit serves multiple functions: it can apply water to both sides of the wiper blade simultaneously, can be selectively connected to different wash water hoses, and can operate in different modes (both sides or single side water application). This multi-functionality improves wiping efficiency without proportionally increasing device complexity.
3Ease of operation
If wash water is supplied through separate hoses to different nozzle elements, then water distribution control is improved, but the hose management and device complexity increase
Solution Approach 1:
The system allows dynamic selection of water supply paths through flexible hose connections. The wash water distribution unit can selectively connect different hoses to different nozzle elements based on operational requirements, enabling dynamic control of water distribution to different sides of the wiper blade while maintaining operational simplicity.
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 achieves a high wiping efficiency with reduced wash water usage by ensuring uniform water distribution and precise application on both sides of the wiper blade, effectively wetting a larger window surface while minimizing water waste.
Implementation Method 1
the at least one first nozzle element and the at least one second nozzle element are designed to discharge wash water in a fan shape in a direction which runs parallel to a wiper arm longitudinal direction
Data Source
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Figure 3
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AI summary
The invention relates to a wiper device, comprising a nozzle unit (10a -10c), which is provided for arrangement on a wiper arm (12a; 12c) and for applying washing water on a vehicle window (14a - 14c). It is proposed that the nozzle unit (10a - 10c) is designed to apply in one operating state washing water on both sides of a wiper blade (16a - 16c) fixed to the wiper arm (12a -12c) on the vehicle window (14a - 14c).