Vehicle Wiper Washer Nozzle Dynamic Spray Direction
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Solution Overview
Problem
Existing vehicle wiper apparatuses face challenges in efficiently supplying washing liquid to both driver's and passenger's seat sides due to wind interference and the need for complex and expensive control circuits, leading to uneven washing liquid distribution and potential interference with the driver's field of view.
Innovation Solution
A vehicle wiper apparatus with two wiper arms and blades, where one wiper arm is equipped with a washer nozzle that adjusts the washing liquid spray direction from the front to the rear as it moves, ensuring effective coverage of both wiping areas without the need for complex control circuits, and reducing manufacturing complexity by placing nozzles only on the passenger's seat side wiper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the washer nozzle is arranged on the engine hood, then the structure is simple, but wind interference causes washing liquid to be supplied to incorrect positions at high speeds
Solution Approach 1:
The patent applies the dynamics principle by making the washer nozzle movable rather than fixed. The nozzle is integrated with the wiper blade assembly and moves together with the wiper arm and blade during their back-and-forth motion. This dynamic positioning allows the nozzle to maintain a consistent relative position to the wiping surface regardless of vehicle speed or wind conditions, ensuring accurate washing liquid delivery to the intended area.
2Quantity of substance
If the washer nozzle is arranged on each wiper blade, then washing liquid can be supplied to both wiping areas, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies the universality principle by designing a single washer nozzle on the passenger-side wiper blade that performs multiple functions. This single nozzle supplies washing liquid to both the passenger-side wiping area and the driver-side wiping area. The nozzle is positioned and angled to cover both regions, eliminating the need for separate nozzles and hoses for each side, thus reducing device complexity while maintaining comprehensive coverage.
3Quantity of substance
If control circuits are added to detect wiper position and direction, then washing liquid can be supplied continuously at the front side, but the device becomes expensive
Solution Approach 1:
The patent applies the self-service principle by designing a passive washing liquid supply system that does not require active control circuits or sensors. The washer nozzle is positioned and angled to naturally supply washing liquid to the front side of the wiping area during the wiper's forward motion, utilizing the inherent mechanical motion of the wiper system. This eliminates the need for expensive position detection circuits while achieving continuous washing liquid supply at the appropriate location.
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 solution ensures efficient and uniform washing liquid distribution across both wiping areas, minimizing wind interference and reducing manufacturing costs by simplifying the nozzle placement, thus enhancing the driver's field of view and operational efficiency.
Implementation Method 1
A washer nozzle is arranged on the first wiper to supply washing liquid to the second wiping area
Data Source
AI summary
A vehicle wiper apparatus is applied to a vehicle provided with a wiping surface including a first wiping area at a passenger's seat side and a second wiping area at a driver's seat side. A first wiper includes a first wiper blade configured to wipe the first wiping area. A second wiper includes a second wiper blade configured to wipe the second wiping area. A washer nozzle is arranged on the first wiper to supply washing liquid to the second wiping area. The washer nozzle sprays washing liquid so that the supply of washing liquid toward a front side in an advancing direction of the second wiper blade switches to a rear side in the advancing direction when the second wiper blade moves from the first reversing position to the second reversing position during the wiping operation of the first and second wipers.