Chair Backrest Hook Assembly with Hidden Fastener Mounting
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Solution Overview
Problem
Traditional seating units lack flexibility and adequate storage solutions for accessories, particularly in learning environments, as they often have limited storage capacity, cumbersome assembly processes, and aesthetic drawbacks, and fail to accommodate diverse user sizes and postures.
Innovation Solution
A seating unit design featuring a backrest with an outwardly protruding rim and a hook assembly that securely couples to the backrest using hidden fasteners, allowing for dynamic support and easy access to accessories, while maintaining a compact and visually appealing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hook assembly is attached to the backrest using visible fasteners, then the hook assembly can be securely mounted, but the aesthetic appearance of the chair is compromised
Solution Approach 1:
The fastening mechanism is extracted and hidden within the backrest structure. The fasteners are inserted into recesses or channels formed in the backrest, concealing them from external view while maintaining their structural function of securing the hook assembly.
Solution Approach 2:
An intermediate mounting structure is introduced that mediates between the hook assembly and the backrest. This intermediate structure allows secure attachment while hiding the fastening elements within the backrest's internal geometry.
2Quantity of substance
If storage bins are placed beneath the seat, then accessory articles can be stored, but the seating unit cannot be stacked and access to articles is cumbersome
Solution Approach 1:
The storage function is relocated from the horizontal plane (bins beneath the seat) to the vertical plane (hooks on the backrest). This dimensional shift allows accessories to be suspended upward, improving accessibility and maintaining stackability while preserving storage capacity.
Solution Approach 2:
The storage system is segmented into multiple individual hook points on the backrest, allowing selective access to different accessories without moving entire storage bins. This segmentation improves ease of operation while maintaining overall storage capacity.
3Stability of the object's composition
If the backrest is rigidly connected to the seat, then structural stability is improved, but comfort and adaptability to user posture are reduced
Solution Approach 1:
The connection between the backrest and seat is transformed from rigid to dynamic. The support member incorporates flexibility or movement capability, allowing the backrest to adapt to user posture while maintaining structural stability through controlled mechanical interaction.
Data Source
AI summary
A seating unit includes a chair with a backrest and a hook assembly. The backrest includes a rear surface having an outwardly protruding rim. The hook assembly comprises a cover plate and a weldment, and the cover plate may include a hook being integrally formed on an exterior face. The hook assembly is configured to be securely coupled on or within the outwardly protruding rim of the backrest, and a secure coupling between the hook assembly and the backrest is formed via insertion of a fastening member, which is inserted through an apertures on a bottom surface of the cover plate, such that the fastener is aligned substantially parallel to the rear surface.