Wiper Arm Integrated Washer Nozzle for Accurate Spray
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Solution Overview
Problem
Conventional washer liquid sprayers for windshields often spray washer liquid inefficiently, failing to coincide with wiper arm operation timing and spraying outside the wiper's operation zone, leading to incomplete cleaning and liquid loss.
Innovation Solution
A washer-integrated type wiper apparatus with a washer spray nozzle positioned at the bending component of a wiper arm's retainer, featuring a hose module, main nozzle with spray ports, and a heater module to ensure accurate spraying and prevent freezing, along with a check valve for controlled liquid supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the washer liquid sprayer is fixedly installed at a cowl top cover and hood, then the structure is simple and easy to manufacture, but the washer liquid is sprayed outside the wiper arm operation zone and washing efficiency decreases
Solution Approach 1:
The washer spray nozzle is integrated into the bending component of the wiper arm, allowing the nozzle to move dynamically with the wiper arm during its reciprocating motion. This ensures the spray nozzle always positions the washer liquid within the wiper blade operation zone, resolving the contradiction between simple fixed installation and effective washing coverage.
2Device complexity
If the washer liquid is sprayed from a fixed sprayer, then the device complexity is low, but the spraying timing does not coincide with wiper arm operation timing and liquid loss increases
Solution Approach 1:
The washer spray nozzle is merged with the bending component of the wiper arm, creating an integrated assembly where both the wiper blade and spray nozzle move together. This synchronization ensures washer liquid is sprayed only when the wiper arm is in the appropriate position, eliminating liquid waste while maintaining simple device structure.
3Ease of manufacture
If the washer liquid sprayer is fixed at the hood, then the installation is simple, but the washer liquid may be sprayed up to the vehicle roof by airflow and fails to reach the appropriate zone
Solution Approach 1:
By integrating the spray nozzle into the moving wiper arm assembly rather than fixing it to the stationary hood, the system dynamically adjusts spray positioning according to the wiper arm's reciprocating motion. This ensures accurate delivery of washer liquid to the intended zone on the windshield, preventing spray drift to the vehicle roof while maintaining installation simplicity.
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 apparatus accurately sprays washer liquid within the wiper blade's operation zone, prevents freezing, and reduces wind noise by integrating components like the heater module and check valve, enhancing cleaning efficiency and product marketability.
Implementation Method 1
a heater module which is installed in the heating area defined at the main nozzle and is configured to transfer heat toward the spray ports
Data Source
AI summary
A washer-integrated type wiper apparatus is provided. The washer-integrated type wiper apparatus includes a nozzle cover that is coupled to one side of a bending component of a retainer to support a wiper blade and a hose module that extends in the longitudinal direction in the interior of the retainer and is positioned in the interior of the nozzle cover and is connected to a washer liquid storing tank. Further, a main nozzle is connected in the interior of the nozzle cover to the hose module and is formed to expose a plurality of spray ports to the outside of the nozzle cover and is configured to spray the washer liquid supplied from the washer liquid storing tank through the spray ports. A heater module is installed in the heating area.