Adapted Power Window Switch Lever Retrofit Kit
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Solution Overview
Problem
Power window controls in vehicles often require significant hand control and finger dexterity, making them difficult or impossible for individuals with physical disabilities to use, and existing adaptive solutions are expensive, complex, and not universally compatible with all vehicles.
Innovation Solution
A mechanical adaptation that converts power window switches into easy-to-actuate vertical lever systems, allowing for less hand/finger coordination and force required, with a lever element placed on top of the switch and an adapter for universal fit, enabling DIY installation without structural modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional low profile power window switches are used, then the vehicle maintains original control design, but persons with physical disabilities cannot operate them due to required finger dexterity and hand control
Solution Approach 1:
The patent introduces a lever adapter as an intermediary component that attaches to the existing power window switch. This adapter includes a lever element that provides mechanical advantage, allowing users with limited hand control to operate the switch. The adapter serves as a mediator between the user's limited motor control and the original switch mechanism, resolving the contradiction by maintaining adaptability while improving ease of operation.
Solution Approach 2:
The patent changes the operational parameters of the power window control by adding a lever mechanism that increases the movement distance and reduces the force required. The lever provides mechanical advantage through its length and pivot point design, transforming the original switch actuation requirements into a more accessible form that accommodates persons with physical disabilities while preserving the original switch functionality.
2Ease of operation
If expensive electronic adaptation systems are installed, then persons with disabilities can control power windows, but the cost and complexity increase significantly
Solution Approach 1:
The patent employs a simple, inexpensive mechanical adapter that can be easily manufactured and installed without requiring complex electronic systems. The adapter is a standalone mechanical component that attaches to the existing switch, providing a cost-effective solution that avoids the high costs and complexities of electronic adaptation systems while achieving the same functional goal of enabling persons with disabilities to control power windows.
Solution Approach 2:
The adapter is designed to be easily installed by the user themselves without requiring professional installation or complex setup procedures. The simple mechanical design allows for straightforward attachment to the existing power window switch, enabling persons with disabilities to independently adapt their vehicle controls without relying on expensive professional services or complex electronic configuration.
3Ease of operation
If custom electronic systems are professionally installed, then power window control is adapted, but installation cost and time increase
Solution Approach 1:
The mechanical adapter is designed as a simple, inexpensive component that can be easily manufactured and installed without requiring professional services. The adapter's straightforward design allows for quick attachment to the existing power window switch using basic tools or even hand installation, dramatically reducing both installation cost and time compared to custom electronic systems that require professional installation.
Solution Approach 2:
The adapter is specifically designed to enable user-friendly, do-it-yourself installation without requiring professional technical expertise or specialized installation equipment. The simple mechanical attachment mechanism allows persons with disabilities or their assistants to easily install the adapter themselves, eliminating the need for expensive professional installation services and reducing installation time to minutes.
4Ease of operation
If lever elements are added to power window switches, then mechanical advantage is provided for persons with limited motor control, but the switch assembly becomes more complex
Solution Approach 1:
The patent divides the power window control system into two separate components: the original power window switch and the added lever adapter. This segmentation allows the lever element to be attached to the existing switch rather than integrating it into the switch housing, providing mechanical advantage while keeping the overall system relatively simple. The modular approach maintains ease of operation through the lever's mechanical advantage while minimizing complexity by preserving the original switch design.
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 adapted power window control system allows individuals with limited motor control to easily operate power windows with minimal effort, providing a universal, cost-effective, and easy-to-install solution that does not void vehicle warranties, with levers of different heights to prevent unintended switch activation.
Implementation Method 1
Lever provides improved mechanical advantage so the person can activate it with minimal movement and effort
Data Source
AI summary
A mechanical adaptation to a vehicle power window controls is provided that require less hand/finger coordination and less force to actuate, therefore becoming useful for persons with limited control of their hands (e.g., arthritis, muscular dystrophy, multiple sclerosis, cerebral palsy, and spinal cord injury, among others). A power window control includes four levers, one on each control switch. Two of the levers are long and the other two are shorter. The long levers are provided on the two switches further away from the user (which control the front and rear left side windows). The short levers are attached to the two switches closer to the user (which control the front and rear right side windows). The base of each lever can be attached to the corresponding switch through a heavy-duty double-sided tape, where for flat switches, the lever is attached directly to the switch surface and for contoured switches, an adapter can be provided between the base of the lever and the surface of the power window switch.