Attachment structure for suspension seating
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Solution Overview
Problem
Suspension seating structures face challenges in properly sizing and assembling carrier members to achieve desired tension and load-carrying capabilities due to non-linear frame perimeters and difficulties in securing suspension materials effectively.
Innovation Solution
A seating structure design featuring a frame with specific attachment features and a carrier system that engages these features to securely attach a suspension material over an opening, ensuring proper tension and load distribution, including the use of ribs and lips to support the suspension material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the suspension material is trapped or captured by the frame, then the assembly is simplified, but the load-carrying capability and tension control are insufficient
Solution Approach 1:
A carrier member is introduced as an intermediary component between the frame and suspension material. The carrier includes attachment features that engage with the frame and secure the suspension material, enabling both simple assembly and adequate load-carrying capability without requiring complex frame structures
2Stability of the object's composition
If the frame forms a ring or non-linear perimeter, then the structural integrity is improved, but the carrier sizing and assembly become difficult
Solution Approach 1:
The attachment features on the carrier are segmented into multiple discrete engagement points distributed around the carrier perimeter. This segmentation allows the carrier to be assembled onto complex ring or non-linear frame perimeters by engaging individual attachment features sequentially, simplifying the assembly process while maintaining structural integrity
3Ease of operation
If the suspension material is put in tension over the opening, then the seating functionality is achieved, but the tension control and load distribution become difficult
Solution Approach 1:
The carrier member is pre-configured with attachment features and attachment means before assembly with the frame. This preliminary preparation allows for controlled tensioning of the suspension material during assembly, ensuring proper tension distribution across the opening without requiring complex adjustment mechanisms
Data Source
AI summary
A seating structure includes a frame, a carrier, and a suspension material. The frame includes first and second side frame members and first and second cross frame members forming a closed loop and defining an opening therebetween. The frame also includes a plurality of first attachment features on an outer perimeter of the frame. The carrier includes first and second side carrier members and first and second cross carrier members that form a closed loop. The carrier also includes a plurality of second attachment features on an inner perimeter of the carrier. The plurality of second attachment features engages the plurality of first attachment features to attach the carrier to the frame. The suspension material is attached to the carrier and extends over the opening in the frame to define a continuous seat and backrest.