Wiper Blade Tip Liquid Spraying Device Integration
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Solution Overview
Problem
Current windshield wiper systems lack an industrial and economically viable solution for effectively spraying window-washing liquid on vehicle windows, particularly in a manner that is compatible with existing wiper blade configurations and does not require adaptation of wiper blade length.
Innovation Solution
A projection device mounted on the longitudinal end of a wiper blade, featuring a body with a liquid circulation channel and internal housing that securely fits over the wiper blade tip, utilizing lugs for fixation and ensuring reliable, efficient liquid distribution close to the wiping area without requiring length adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a projection device is mounted on the wiper blade tip, then liquid spraying capability is improved, but the device complexity increases
Solution Approach 1:
The projection device is merged with the wiper blade tip by receiving the tip within a housing that is integrally formed as part of the projection device body. The tip passes through the housing, and the projection device is fixed to the tip, creating a unified assembly that combines the spraying function with the existing wiper blade structure.
Solution Approach 2:
The projection device is designed to be mounted on standard wiper blade tips without requiring adaptation of the wiper blade length or structure. The housing accommodates the tip in a universal manner, allowing the same projection device to be used with different wiper blade configurations while maintaining the spraying capability.
2Reliability
If the projection device is fixedly connected to the wiper blade, then reliability is improved, but ease of manufacture deteriorates
Solution Approach 1:
The projection device is segmented into distinct components: a body with an internal housing, a tip that passes through the housing, and fixing means (such as lugs or clips) that secure the assembly. This segmentation allows each component to be manufactured separately using standard processes, then assembled through simple fixation mechanisms that ensure reliability without complex manufacturing steps.
3Reliability
If the housing covers the tip completely, then protection is improved, but ease of operation deteriorates
Solution Approach 1:
The housing is designed with openings or gaps that allow the tip to be inserted and removed dynamically. The tip passes through the housing rather than being completely enclosed, enabling easy installation and removal while the housing still provides sufficient coverage and protection. The fixing means can be engaged or disengaged to secure or release the tip as needed.
Data Source
Figure 1
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AI summary
The invention relates to a liquid projection device (12) intended to be mounted on an end-piece (11) that can be attached to a longitudinal end of a wiper blade (70), comprising a body (23) and a liquid flow channel (13) made as a single unit, wherein said channel (13) comprises an inlet opening (15) and a spraying opening (16), and wherein the body (23) comprises an inner wall (29) that defines a recess (27) for receiving the end piece (11). The invention can be used in the automotive industry.