Integrated Wiper Nozzle Layout for Stable Washer Fluid Coverage
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Solution Overview
Problem
Existing vehicle windshield wipers face issues with washer fluid being sprayed beyond the longitudinal direction of the wiper blade due to vehicle travel wind, leading to waste and instability in fluid distribution, especially during high-speed travel.
Innovation Solution
A washer nozzle integrated with the wiper arm or blade that emits a film-like spray oriented downward at an angle towards the tip end side of the wiper blade, ensuring the washer fluid spreads uniformly within the longitudinal direction of the wiper blade, supplemented by linear sprays at the center and rear end sides to address different travel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If washer fluid is sprayed from a conventional nozzle during high-speed travel, then the spray reaches the windshield, but the fluid is blown beyond the wiper blade's longitudinal range causing waste and unstable distribution
Solution Approach 1:
The spray nozzle is designed to emit washer fluid with a film-like spray pattern specifically oriented toward the tip end side of the wiper blade, creating localized quality in fluid distribution that matches the specific operational conditions of high-speed travel with travel wind
Solution Approach 2:
The invention changes the spray parameters (spray pattern, orientation angle, and direction) to emit a film-like spray oriented downward at an angle towards the tip end side, which prevents the fluid from being blown beyond the wiper blade's longitudinal range while maintaining adequate supply
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 film-like spray effectively supplies washer fluid continuously and uniformly within the wiper blade's longitudinal range, minimizing waste and maintaining stability despite vehicle travel wind, while linear sprays ensure adequate supply to the rear end during high-speed travel.
Implementation Method 1
the washer nozzle includes a spraying portion that emits a spray of the washer fluid that is oriented downward at an angle towards at least the tip end side of the wiper blade, the spray having a film-like spread in the longitudinal direction of the wiper blade
Data Source
AI summary
A vehicle windshield wiper includes a wiper blade that wipes a wiped surface, and a wiper arm, connected to the wiper blade, that transmits driving force for a wiping operation to the wiper blade. A washer nozzle, supplying a washer fluid to the wiped surface by spraying, is integrally provided in the wiper arm or the wiper blade. When an end portion in a longitudinal direction on a side that coincides with a tip end portion of the vehicle windshield wiper is a tip end portion of the wiper blade and an end portion on an opposite side is a rear end portion of the wiper blade, the washer nozzle includes a film-like spraying portion that emits a spray of the washer fluid oriented downward at an angle towards at least the tip end side of the wiper blade, the spray having a film-like spread in the longitudinal direction.