Expandable Step System with Scissor Mechanism for Cabinet Storage
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Solution Overview
Problem
Accessing elevated locations safely and efficiently is challenging due to the instability and storage issues of traditional step ladders and stools, which can lead to accidents and occupy valuable space, necessitating a safer, more compact, and expandable solution.
Innovation Solution
An expandable step system with a frame and scissor mechanism that allows for vertical expansion of multiple steps, enabling safe access to elevated areas without additional tools, and can be stored under a cabinet for easy retrieval and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional step ladders or stools are used to reach elevated locations, then individuals can access high items independently, but the devices are unstable and occupy valuable storage space
Solution Approach 1:
The step system transitions from a static structure to a dynamic one that can expand and collapse. The scissor mechanism allows the steps to extend vertically when needed and collapse into a compact form for storage, providing both stability during use and space efficiency when stored.
Solution Approach 2:
The step system is divided into multiple expandable sections connected by scissor mechanisms. This segmentation allows the device to adjust its height by expanding individual sections, providing stable support at various elevations while maintaining a compact form when collapsed.
2Ease of operation
If traditional step ladders or stools are used to reach elevated locations, then individuals can access high items independently, but the devices occupy valuable storage space
Solution Approach 1:
The step system employs a nesting principle where the steps collapse into a compact configuration that fits within the cabinet space. When not in use, the expandable steps retract into a minimal volume, similar to nested dolls, eliminating the need for separate storage space.
Solution Approach 2:
The dynamic expansion and collapse capability allows the device to transition between a large operational state and a compact storage state. This dynamic behavior enables the system to provide full step ladder functionality when needed while occupying minimal space during storage.
3Ease of operation
If chairs are used to reach elevated storage spaces, then individuals can access items independently, but chairs can easily tip over causing severe injuries
Solution Approach 1:
Instead of using a single-point support structure like a chair that can tip, the invention inverts the approach by using a wide-base step system with multiple contact points. The scissor mechanism creates a stable triangular support structure that resists tipping forces.
Solution Approach 2:
The dynamic scissor mechanism maintains stability throughout the expansion range by continuously adjusting the support geometry. As the steps extend, the mechanism ensures that the center of gravity remains within the base of support, preventing tipping.
4Volume of moving object
If rods or sticks are used to reach elevated items, then the solution is simple and compact, but these items lack stability and can easily break leading to accidents
Solution Approach 1:
The system transitions from a simple static rod to a dynamic expandable structure. The scissor mechanism provides mechanical advantage and distributes loads across multiple members, increasing strength and stability while maintaining compact storage when collapsed.
Solution Approach 2:
Instead of a single rod, the system uses multiple segmented members connected by hinges. This segmentation allows the structure to distribute forces across multiple components, increasing overall strength and stability while enabling compact folding for storage.
Data Source
AI summary
An expandable step system designed to replace traditional step ladders, makeshift stools, and similar devices for reaching elevated locations. The step system includes a frame that includes a plurality of steps, each step is configured to be raised vertically using a scissor system wherein the steps form ladder steps enabling a user to stand on the steps to reach elevated locations. The step system is stored at the bottom of a cabinet when not in use and can be pulled out of the cabinet by applying a slight force on the front surface thereof, wherein the force pushes the push latches positioned on the rear surface of the system. The system can be made in any size and weight limit and can be installed under one or multiple cabinets in a kitchen area.