Modular Seating Frame Assembly With Hidden Pin-Bar Connection
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Solution Overview
Problem
Existing seating furniture in public spaces faces challenges in providing high sitting comfort while being easy to assemble and maintain, as the T-shaped bar connection to the leg is cumbersome and affects the optical appearance, leading to increased maintenance costs and complexity.
Innovation Solution
A seating furniture design featuring a vertical arrangement with a horizontal bar that uses a detachable, form-fitting pin connection between the frame sockets and legs, allowing for easy assembly and replacement of seat and back parts, with a standardized frame system that maintains stability and uniform appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a T-shaped bar with flange connection is used to connect frames to legs, then structural stability is achieved, but the optical appearance is compromised and assembly complexity increases
Solution Approach 1:
The patent extracts the visible T-shaped bar connection from the final assembly by introducing an intermediate socket element. The socket is recessed into the leg, hiding the connection mechanism and eliminating the cumbersome external T-bar appearance while maintaining the structural stability through the socket-bar interface.
Solution Approach 2:
The socket acts as an intermediary element between the leg and the horizontal bar. Instead of directly connecting the T-bar to the leg in a visible manner, the socket mediates this connection by receiving the bar's end portion, thereby simplifying assembly and improving optical appearance while preserving structural integrity.
2Ease of repair
If separate seat and back pads are used with removable cover plates, then ease of maintenance is improved, but the number of components increases
Solution Approach 1:
The patent segments the seating furniture into distinct modular components: removable seat pads, separate back pads, and detachable cover plates. This segmentation enables independent maintenance of each component without disassembling the entire structure, improving ease of repair despite the increased number of individual parts.
Solution Approach 2:
The cover plates are designed to be dynamically removable and reattachable, transforming from fixed structural elements to flexible maintenance access points. This dynamic design allows quick replacement of pads while maintaining a unified appearance when assembled, balancing component multiplicity with maintenance simplicity.
3Ease of manufacture
If standardized frames are used to minimize individual components, then manufacturing efficiency is improved, but adaptability to different seating configurations is reduced
Solution Approach 1:
The standardized frame design incorporates universal connection features such as sockets that can accommodate different horizontal bar configurations. The same frame type can serve multiple functions in various seating arrangements (single seats, multiple seating, intermediate positions), achieving both manufacturing efficiency and configuration adaptability through multi-functional design.
Solution Approach 2:
The patent utilizes parameter changes in the standardized frames, particularly in the socket positioning and dimensional variations, to enable different seating configurations. By adjusting key parameters like socket location and frame spacing, the same standardized frame design can adapt to various seating arrangements without requiring custom components.
Data Source
AI summary
The invention relates to seating furniture comprising two frames (2) arranged at a distance to each other on a support (1), between which frames a seat part (3) and a backrest part (4) can be mounted, and the frames (2) have one upper frame part (6) and a lower frame part (7) each which mechanically immobilize the seat part (3) and the backrest part (4) on the edges thereof. The support (1) contains a horizontal bar (11), extending between two legs (5), on which the frames (2) can be mounted as a terminal frame or intermediate frame via respective frame bases (12). The bar (11) comprises a linking piece (13) which is put on a detachable, form-fitting pin connection (14) together with the frame base (12) of a terminal frame and a leg (5) in a certain order.