Winch Tension Detection for Attic Lifting Stability
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Solution Overview
Problem
Existing lifting systems for accessing attic spaces are unsafe, costly, and inefficient due to the need for skilled labor, high costs, and lack of adaptability to varying ceiling heights and structural variations, often resulting in unstable platforms and increased risk of injury.
Innovation Solution
A lifting system featuring a winch motor, tension detection switch assembly, and a biasing mechanism that automatically adjusts the lifting platform and closure platform to securely and safely move objects between floors, using a tether system to raise and lower a platform assembly with a closure platform that seals the opening, reducing the need for complex guide tracks and ensuring stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If prior art lift systems are installed, then lifting capability is provided, but installation complexity and cost increase due to requiring skilled labor and special wiring
Solution Approach 1:
The lifting system is designed to be self-installing without requiring skilled electricians or special wiring. The system uses existing electrical outlets and standard wiring that any homeowner can work with, eliminating the need for professional installation services.
Solution Approach 2:
The system replaces expensive, custom-built elevator installations with an affordable, standardized lifting platform that can be easily installed and removed. The modular design allows for cost-effective deployment without long-term commitment to complex infrastructure.
2Adaptability or versatility
If prior art lift systems are used, then lifting function is achieved, but adaptability to varying ceiling heights and structural variations is poor
Solution Approach 1:
The lifting platform incorporates adjustable components that can be dynamically configured to match different ceiling heights and structural conditions. The system adapts to various installations through adjustable mounting options and flexible cable lengths rather than requiring custom-built solutions.
Solution Approach 2:
The lifting system is designed as a universal solution that works across multiple ceiling heights and structural configurations. Standardized mounting interfaces and adjustable components allow the same basic system to serve diverse installation environments without customization.
3Stability of the object's composition
If roller guide tracks and telescoping columns are added to prior art systems, then platform stability improves, but device complexity and cost increase
Solution Approach 1:
The system removes complex guide tracks, rails, and telescoping columns from the design. Instead, it uses a simplified cable-suspended platform that achieves stability through proper cable routing and tensioning rather than mechanical guidance structures.
Solution Approach 2:
Mechanical guide structures are replaced with a cable-based suspension system. The platform is stabilized through cable tension and winch control rather than physical rails or tracks, reducing mechanical complexity while maintaining stability.
4Manufacturing precision
If complex guide tracks and rails are installed, then platform alignment improves, but installation cost and time increase
Solution Approach 1:
The platform achieves self-alignment through the natural geometry of the cable routing and winch positioning. The system automatically centers itself during operation without requiring precise pre-installation of guide structures or complex alignment procedures.
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 system provides a safe, affordable, and adaptable solution for moving objects between floors, reducing the risk of injury and cost by eliminating the need for complex installations and ensuring stable, efficient operation with automatic tension detection and adjustment.
Implementation Method 1
a winch motor adapted to rotate a winch member in opposing first and second directions to wrap/unwrap a portion of a cable on/from the winch member
Implementation Method 2
a biasing member which exerts a bias force upon the winch member to nominally deflect the winch member to a first position which sets the switch to deactivate the winch motor in an absence of tension in the cable
Implementation Method 3
A presence of tension in the cable from the lifting platform assembly deflects the winch member to a second position which sets the switch to facilitate activation of the winch motor
Data Source
AI summary
Apparatus for raising and lowering objects. In accordance with some embodiments, a winch motor is adapted to rotate a winch member in opposing first and second directions to wrap/unwrap a portion of a cable on/from the winch member to raise and lower a lifting platform assembly, respectively. A tension detection switch assembly includes an on/off switch connected to the winch motor and a biasing member which exerts a bias force upon the winch member to nominally deflect the winch member to a first position which sets the switch to deactivate the winch motor in an absence of tension in the cable from the lifting platform assembly. A presence of tension in the cable from the lifting platform assembly deflects the winch member to a second position which sets the switch to facilitate activation of the winch motor.