Wiper Arm Nozzle Layout for Targeted Low-Fluid Windshield Cleaning
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Solution Overview
Problem
Traditional wiper systems require excessive cleaning fluid and have a bulky design, which increases windscreen coverage and reduces aerodynamic efficiency.
Innovation Solution
A wiper system with a wiper arm, blade, and nozzles designed to direct cleaning fluid to the longitudinal side of the blade, featuring a compact conduit and nozzle arrangement that minimizes height and maximizes cleaning efficiency, allowing for targeted fluid application and reduced airflow interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover for covering the water spray body is arranged on the side of the wiper arm in a swing direction of the wiper arm, then the water spray body is protected, but the area on the windscreen covered by the wiper increases
Solution Approach 1:
The patent repositions the cover from a lateral arrangement (along the swing direction) to a longitudinal arrangement (along the extension direction of the wiper arm). This dimensional change allows the cover to protect the nozzle while extending in the direction that minimizes its projection area on the windscreen, thereby resolving the contradiction between protection and area coverage.
2Reliability
If cleaning fluid is sprayed onto the entire surface of the windscreen, then the windscreen is thoroughly cleaned, but a large amount of cleaning fluid is needed
Solution Approach 1:
The patent transitions from a full-surface spraying approach to a localized spraying approach. The nozzle is positioned to spray cleaning fluid only at the longitudinal side of the wiper blade where it is needed, rather than covering the entire windscreen. This local quality principle reduces cleaning fluid consumption while maintaining effective cleaning where the blade contacts the glass.
Solution Approach 2:
The cleaning fluid is sprayed in advance at the longitudinal side of the wiper blade before the blade makes contact with the windscreen. This preliminary action ensures that the fluid is already in place to assist the blade during wiping, improving cleaning effectiveness while using less fluid overall compared to spraying the entire surface.
3Ease of manufacture
If the conduit is arranged to extend to the longitudinal side of the wiper blade, then targeted fluid application is achieved, but the height of the wiper assembly increases
Solution Approach 1:
The patent integrates the conduit within the existing structure of the wiper arm assembly, nesting it along the extension direction where space is already available. The conduit is routed through or alongside existing components rather than adding external protrusions, allowing targeted fluid delivery to the blade's longitudinal side without significantly increasing the overall height of the assembly.
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 system achieves a better wiping effect with minimal fluid usage while maintaining a compact and aerodynamic design, enhancing driving safety and aesthetic appeal.
Implementation Method 1
a first conduit (71) for conveying a cleaning fluid under pressure to the first nozzle (50)
Data Source
AI summary
The present invention relates to a wiper and a vehicle. The present invention relates to a wiper and a vehicle. The wiper (1, 1′, 1″) comprises: a wiper arm (2) comprising a wiper arm holder (10), an extension arm (20), and a wiper arm end member (40), the wiper arm being drivable to swing back and forth in an outward swing direction and a return direction; a wiper blade (60) comprising a blade holding portion (61) and a blade rubber strip (63); a first nozzle (50) connected to the wiper arm end member (40); and a first conduit (71) for conveying a cleaning fluid under pressure to the first nozzle (50), wherein an end (71B) of the first conduit (71) that is used for connecting with the first nozzle (50) passes the wiper blade (60) between the wiper arm end member (40) and the blade holding portion (61) and extends to a first longitudinal side of the wiper blade (60).