Integrated Wiper Blade Nozzle for Uniform Windshield Cleaning
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Solution Overview
Problem
Existing wiper blades for vehicles suffer from poor cleaning performance due to nozzles being positioned at the lower end of the windshield, leading to uneven liquid distribution and increased costs from separate protective components to shield the nozzle from external damage.
Innovation Solution
A wiper blade design where the nozzle is integrated into the wiper arm, positioned between the blade and an extension bracket, allowing for perpendicular assembly and protection from external forces, eliminating the need for a separate cover and optimizing liquid distribution to both ends of the windshield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the nozzle is positioned at the lower end of the windshield glass, then the structure is simple, but the cleaning liquid cannot be uniformly applied onto the uppermost end of the windshield glass, causing deterioration in cleaning performance
Solution Approach 1:
The nozzle is repositioned from the lower end of the windshield glass to the wiper blade assembly, changing its spatial dimension and orientation. This allows the nozzle to spray cleaning liquid along the longitudinal direction of the blade, enabling uniform distribution from the uppermost to lowermost end of the windshield glass through gravitational flow assisted by blade movement.
2Ease of manufacture
If the nozzle is positioned at the lower end of the windshield glass, then the structure is simple, but the cleaning liquid is sprayed in a direction opposite to gravity, causing scattering toward unnecessary positions such as the cowl
Solution Approach 1:
Instead of positioning the nozzle at the lower end and spraying upward against gravity, the invention inverts the approach by positioning the nozzle on the wiper blade and spraying in the longitudinal direction of the blade, allowing cleaning liquid to flow downward with gravity assistance, thereby preventing scattering toward the cowl and other unnecessary positions.
3Reliability
If the nozzle is coupled to the wiper blade and positioned adjacent to the middle portion, then cleaning performance is improved by uniform distribution, but the nozzle may be damaged by deposited snow or artificial external forces
Solution Approach 1:
The nozzle is nested within the wiper arm structure, specifically installed on an assembling part that extends outward from the installation bracket and positioned between the assembling part and the blade. This nested configuration protects the nozzle from direct exposure to external forces such as deposited snow and artificial impacts, while still enabling effective cleaning liquid distribution.
4Object-affected harmful factors
If a separate component is provided to protect the nozzle, then the nozzle is protected from damage, but compatibility between the separate component and the wiper blade becomes problematic, increasing development costs and vehicle costs
Solution Approach 1:
The protective function is merged into the existing wiper arm structure by installing the nozzle on an assembling part that extends from the installation bracket and positioning it between the assembling part and the blade. This integration eliminates the need for separate protective components, avoiding compatibility issues and reducing development and vehicle costs while maintaining nozzle protection.
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
This design enhances cleaning performance by ensuring uniform liquid distribution and reduces costs by integrating the nozzle within the wiper arm, maintaining functionality even if the outer structure is damaged, and minimizing environmental influences.
Implementation Method 1
the cleaning liquid is sprayed in a direction opposite to the gravity... the cleaning liquid is uniformly distributed to both an uppermost end and a lowermost end of the windshield glass
Implementation Method 2
The nozzle may be assembled by being fitted with the assembling part in a perpendicular direction
Data Source
AI summary
A wiper blade for a vehicle includes a wiper arm having one end installed at a windshield glass side and configured to rotate, and the other end at which an installation bracket is provided, a blade mounted on the installation bracket of the wiper arm and configured to clean a windshield glass, and a nozzle installed on an assembling part extending outward from the installation bracket of the wiper arm, the nozzle being positioned between the assembling part and the blade and configured to spray a cleaning liquid in a longitudinal direction in which the blade extends.