Foldable Chair Bracket for Adjustable Supporting Plate Angles
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Solution Overview
Problem
Conventional chair supporting plates are not adjustable, requiring separate front and back chairs and increasing installation costs, while failing to meet user-specific angle requirements.
Innovation Solution
A foldable bracket system comprising a positioning rod, first and second rotating rods, a connector, and a supporting plate, allowing the supporting plate to be adjusted to any desired angle through a series of rotating and sliding mechanisms, including springs and locking projections, to accommodate user needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional supporting plate is connected with armrests of the chair, then the supporting plate is fixed in position, but it cannot be adjusted towards a desired angle
Solution Approach 1:
The supporting plate is transformed from a fixed structure to a dynamic, adjustable structure through the incorporation of rotating rods and connectors. The first rotating rod allows adjustment of the bracket relative to the chair back, while the second rotating rod enables adjustment of the supporting plate relative to the bracket, providing multi-degree-of-freedom adjustability.
Solution Approach 2:
The bracket system is divided into multiple independent segments: the positioning rod, first rotating rod, connector, second rotating rod, and supporting plate. Each segment can be independently adjusted and positioned, allowing the supporting plate to reach various angles and orientations to suit different user needs.
2Adaptability or versatility
If separate front and back chairs are arranged to provide a supporting surface, then the supporting function is achieved, but installation cost increases
Solution Approach 1:
The supporting plate integrated into the chair back serves multiple functions: it acts as both a structural component of the chair and a functional supporting surface for books or notebooks. This eliminates the need for separate chairs arranged to provide support, reducing the total number of chairs required.
Solution Approach 2:
The supporting function is merged with the chair back structure itself. The supporting plate is integrated into the existing chair framework through the bracket system, combining the chair's structural role with the supporting surface function in a single unified system.
3Volume of moving object
If the supporting plate is made foldable, then space is saved and aesthetic appeal is enhanced, but the mechanism complexity increases
Solution Approach 1:
The bracket system incorporates dynamic folding capability through the rotating rods and connectors. When not in use, the supporting plate can be folded back against the chair back, reducing the volume it occupies. The same rotating mechanisms that provide adjustability also enable the folding action.
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
Enables adjustable supporting plates that can be positioned at various angles to suit user requirements, saving space and enhancing the chair's aesthetic appeal by allowing for folding and customizable positioning.
Implementation Method 1
The first rotating rod is rotatably coupled with the positioning rod
Implementation Method 2
The second rotating rod is rotatably coupled with the connector
Data Source
AI summary
A foldable bracket of a chair contains a positioning rod, a first rotating rod, a connector, a second rotating rod, and a supporting plate. The positioning rod is connected with the chair. The first rotating rod is rotatably coupled with the positioning rod. The connector is joined with the first rotating rod. The second rotating rod is rotatably coupled with the connector, and the supporting plate is connected to the second rotating rod.