Tailgate Rear Window Washer Module Without Long Fluid Lines
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Solution Overview
Problem
Existing vehicle window washer systems often require complex fluid supply lines between the front and rear windshields, making them difficult to install and maintain, and increasing the risk of fluid leakage.
Innovation Solution
A rear window washer system with a self-contained fluid reservoir and nozzle mounted on the tailgate, independent of the front windshield washer system, featuring a pump and wiper assembly that operates independently, eliminating the need for a fluid supply line between the two systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex fluid supply lines are used to connect front and rear windshield washer systems, then fluid can be supplied to both windshields, but the system becomes difficult to install and maintain, and the risk of fluid leakage increases
Solution Approach 1:
The washer system is divided into independent front and rear sections. The rear window washer system has its own separate fluid reservoir, pump, and nozzle assembly mounted on the tailgate, eliminating the need for long fluid supply lines connecting to the front system. This segmentation reduces leakage risks and simplifies the overall system architecture.
Solution Approach 2:
The fluid reservoir and pump are extracted from the front windshield washer system and relocated to the rear tailgate area. This extraction creates an independent rear washer system that operates autonomously without requiring fluid supply lines from the front, thereby reducing complexity and leakage potential.
2Adaptability or versatility
If fluid supply lines are connected between front and rear windshields, then a unified washer system can be achieved, but installation and removal of cabin-enclosure assembly becomes difficult
Solution Approach 1:
The fluid reservoir and associated components are extracted from the cabin-enclosure assembly and mounted independently on the tailgate. This allows the cabin-enclosure assembly to be installed or removed without disconnecting or reconnecting fluid supply lines, as the rear washer system operates independently with its own fluid source.
Solution Approach 2:
The washer system is segmented into separate functional units: the front windshield system remains with the cabin-enclosure assembly while the rear window system is mounted on the tailgate with its own fluid reservoir. This segmentation allows independent installation and removal of the cabin-enclosure assembly without affecting fluid connections.
3Ease of manufacture
If unnecessary components and connections are included in the washer system, then complete fluid supply coverage can be achieved, but manufacturing complexity increases
Solution Approach 1:
Unnecessary fluid supply lines and intermediate connections are extracted from the system. The rear window washer system uses its own locally mounted fluid reservoir and pump, eliminating the need for long fluid supply lines and multiple connections that would increase manufacturing complexity while still achieving complete fluid supply coverage for the rear window.
Solution Approach 2:
The system is segmented into independent modules where each section (front and rear) has its own fluid supply components. This eliminates the need for a unified complex fluid distribution network, reducing manufacturing complexity while ensuring adequate fluid supply to each window surface.
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
Enables quick and easy installation and removal of the cabin enclosure assembly without disconnecting fluid supply lines, reduces the risk of leakage, and simplifies manufacturing by allowing for preassembly of the rear window washer system as a module.
Implementation Method 1
a pump may be disposed in a housing or shell defining the fluid reservoir. The pump may be in communication with a switch that provides an electrical connection between an electrical power source and the pump to selectively prevent and allow the nozzle from ejecting window washer fluid.
Data Source
AI summary
A window washer system for a vehicle may include a fluid reservoir and a nozzle. The fluid reservoir may be disposed on an exterior side of a tailgate of the vehicle and may be adapted to store a quantity of window washer fluid. The nozzle may be in fluid communication with the fluid reservoir and may be operable to deposit the window washer fluid onto a rear window of the vehicle. The window washer system may be disposed proximate a spare tire carrier.