Portable Bleacher Chair with Foldable Assembly for Compact Storage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional foldable bleacher chairs maintain a large volume even when folded due to their design, making them cumbersome to carry.
Innovation Solution
A portable bleacher chair with a base and rotatably connected backrest, featuring a foldable assembly with parallel main rods, X-shaped cross structures, and a telescopic rod system that allows for compact folding by varying the distance between the main rods, along with adjustable components for tensioning seat and backrest cloths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional foldable bleacher chairs only fold the backrest and base relative to each other, then the folding operation is simple, but the volume remains large and portability is poor
Solution Approach 1:
The base is segmented into multiple main rods that can independently fold relative to each other through the foldable assembly. This segmentation allows the base to collapse into a compact configuration, dramatically reducing the overall volume of the chair when folded, while maintaining structural integrity through the modular rod-and-assembly design.
Solution Approach 2:
The foldable assembly enables the main rods to nest within each other when folded, similar to nested dolls. The telescopic nature of the foldable assembly allows one rod to be contained within another, minimizing the external dimensions and creating a compact portable form factor without requiring complex disassembly.
2Ease of operation
If the base includes a foldable assembly that varies the distance between main rods, then the portability is improved, but the structural complexity increases
Solution Approach 1:
The foldable assembly introduces dynamic, movable connections between the main rods, allowing the structure to transition between extended and folded states. This dynamic mechanism enables the chair to adapt its configuration for either stability during use or compactness for transport, improving portability while the modular nature keeps the added complexity manageable.
Solution Approach 2:
The foldable assembly operates by changing the spatial relationship between main rods in multiple dimensions. By allowing rods to move relative to each other in length and angle, the structure achieves compact folding through dimensional transformation rather than simple rotation, enhancing portability while distributing the mechanical complexity across multiple degrees of freedom.
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 design results in a compact, easy-to-carry bleacher chair that maintains comfort and support while reducing storage and transport volume.
Implementation Method 1
a foldable assembly connected between the pair of main rods; wherein the foldable assembly is configured to be in a folded state or an unfolded state, and a distance between the pair of main rods varies with a transition between the folded state and the unfolded state
Implementation Method 2
The telescopic rod includes a telescopic locking structure
Implementation Method 3
a base and a backrest rotatably connected to an end of the base
Data Source
AI summary
The portable bleacher chair provided by the present disclosure includes a base and a backrest rotatably connected to amend of the base. The base includes a pair of main rods arranged in parallel and a foldable assembly connected between the pair of main rods. The foldable assembly is configured to be in a folded state or an unfolded state, and a distance between the pair of main rods varies with a transition between the folded state and the unfolded state of the foldable assembly. Since the base includes the foldable assembly, the portable bleacher chair provided by the present disclosure is small, compact, and easy to carry in the folded state.