Combination Chair Backpack for Discreet Cord-Driven Conversion
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Solution Overview
Problem
Conventional folding chairs require manual unfolding while standing, which attracts attention and disrupts the user's surroundings, making it difficult to sit down discreetly in situations like hunting.
Innovation Solution
A combination chair backpack with a vertical backrest and a movable seat portion that can pivot between a backpack and chair position, using latches and cords to convert between positions without manual unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional folding chairs are manually unfolded while standing, then the user can set up the chair, but the motion attracts attention and disrupts the surroundings
Solution Approach 1:
The chair is pre-assembled in a compact backpack configuration with all structural components already in place. The latches and cords are pre-positioned to enable direct conversion from backpack to chair position without requiring manual unfolding or assembly steps that would create motion and attract attention.
Solution Approach 2:
The chair utilizes the user's body weight and position as part of the deployment mechanism. By sitting down directly from the backpack position, the user's own weight drives the chair into its functional configuration, eliminating the need for external manual manipulation that would generate noticeable motion.
2Ease of operation
If conventional folding chairs are carried by hand, then they are easy to transport, but they cannot be converted to chair position discreetly
Solution Approach 1:
The chair is merged with a backpack structure, combining the carrying function and chair function into a single integrated device. The backpack straps and frame become part of the chair structure, allowing the same object to serve both transportation and seating purposes without requiring separate components or visible transformation steps.
Solution Approach 2:
The chair deployment occurs in a different spatial dimension - rather than unfolding horizontally beside the user, the chair transforms vertically on the user's back. The seat portion pivots from a vertical backpack position to a horizontal chair position through a hinge mechanism that utilizes the user's back as the axis of rotation, keeping the transformation concealed against the user's body.
3Adaptability or versatility
If the seat portion is made movable for conversion, then chair functionality is achieved, but additional latches and cords increase device complexity
Solution Approach 1:
The latches and cords serve multiple functions simultaneously. The latches secure the chair in both backpack and chair positions, while the cords provide both the mechanical force for position conversion and the user interface for triggering the transformation. This multi-functionality reduces the need for separate components for each function.
Solution Approach 2:
The complex multi-step unfolding mechanisms of conventional chairs are extracted and replaced with a simplified two-position system. Only the essential elements for position conversion (latches and cords) are retained, while unnecessary intermediate folding steps and complex joint mechanisms are removed, reducing overall device complexity.
Data Source
AI summary
A combination chair backpack is carried as a backpack and is converted into a chair without the user having to manually unfold the chair while standing beside it. The combination chair backpack has a backrest portion and a seat portion connected by a hinge. A backpack-position cord raises and lowers the seat portion and also engages a latch securing the seat portion in the backpack position. A chair-position cord releases a latch securing the hinge in the chair position.