Collapsible Chair Structure With Bent Back Pole for Stable Headrest
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing portable chairs have a large number of components, leading to increased manufacturing costs, weight, and safety issues due to concentrated load distribution, which results in instability and inability to provide a stable headrest function.
Innovation Solution
A collapsible chair design featuring coupling holes, telescopic insert parts, and elastic cables connecting support poles to absorb load and prevent top folding, eliminating the need for additional connecting members and allowing easy assembly and folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional portable chairs use multiple hubs and frames with numerous connecting holes, then the chair structure can be assembled, but the number of components increases leading to increased weight, manufacturing costs, and device complexity
Solution Approach 1:
The patent merges multiple separate components (hubs, frames, connecting members) into a single integrated main body structure. The main body includes coupling holes and insertion holes that directly receive support poles, eliminating the need for separate hubs and connecting members. This consolidation reduces the number of components and simplifies the overall structure.
Solution Approach 2:
The main body serves multiple functions simultaneously: it acts as the central connection point for all support poles, provides structural support, and integrates the coupling and insertion mechanisms. This multi-functionality eliminates the need for separate specialized components for each function.
2Reliability
If traditional portable chairs concentrate load on rear pole frames connected to both hubs, then the structure is simplified, but the load concentration causes the chair to tumble back and creates safety issues
Solution Approach 1:
The patent segments the load-bearing function across multiple independent support poles (front support pole, rear support pole, seat support poles) rather than concentrating it on a single rear frame. Each pole independently supports specific portions of the load, distributing the stress and preventing tumbling.
Solution Approach 2:
The patent introduces a bent portion in the seat back pole that extends in a direction different from the main body axis. This dimensional change allows the bent portion to effectively counterbalance the user's backrest load, providing stability in a different spatial dimension rather than relying solely on rear frame strength.
3Ease of operation
If traditional portable chairs use retractable rear pole frames for portability, then the chair can be folded, but the top of the seat folds when the user sits, causing instability and losing headrest function
Solution Approach 1:
The patent incorporates a headrest that is预先 installed on the seat in advance. This preliminary action ensures that when the user sits down, the headrest is already in position to provide support and prevent the seat top from folding, maintaining stability during use.
Solution Approach 2:
The bent portion of the seat back pole is configured to extend in a direction different from the main body axis. When the user leans back, this bent portion effectively counterbalances the load in a different spatial dimension, preventing the seat top from folding inward and maintaining structural stability.
4Ease of manufacture
If traditional portable chairs have numerous components and connecting members, then the structure can be assembled, but the weight of the chair increases
Solution Approach 1:
The patent combines multiple separate components into a single main body structure that integrates all connection points and support mechanisms. This merging eliminates the weight of separate hubs, frames, and connecting members while maintaining full assembly capability through the integrated coupling and insertion holes.
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 reduces weight, saves resources, enhances safety by distributing load through a bent seat back pole, and provides a comfortable seating experience with a built-in headrest function, improving convenience and stability.
Implementation Method 1
the load transmitted to the seat back pole through the seat by the bent portion formed on the seat back pole is supported flexibly
Implementation Method 2
front support poles whose one end is inserted into the coupling hole of the main body through a telescopic insert part housed therein
Data Source
AI summary
Disclosed is a collapsible chair including a cylindrical main body 101 which is a major component of a collapsible chair, front and rear support poles 111 and 131 which support the main body 101 at a predetermined angle on front and rear side, respectively, seat back poles 121 and seat support poles 141 which are connected to the main body 101 to extend forward and upward, and a seat 151 whose opposite end portions are fixed by the seat back poles 121 and the seat support poles 141. The main body 101 has coupling holes 102 formed on opposite end portions thereof at a predetermined angle, first insertion holes 103 formed on opposite end portions thereof at a predetermined angle and an interval with the coupling hole 102.