Movable Chair Tablet Support With Offset Load Transfer
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Solution Overview
Problem
Existing chair designs with moveable tablet arms are costly due to complex joint or bracket systems required to withstand substantial user forces, increasing manufacturing expenses.
Innovation Solution
A chair design featuring a support member with an offset section that transfers a significant portion of the tablet's load to the chair base, reducing the load on the attachment mechanism and allowing for cost-effective manufacturing while maintaining the ability to move the tablet from a raised to a lowered position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex joint or bracket system is used to permit tablet movement, then the tablet can be moved from raised to lowered position, but the manufacturing cost increases substantially
Solution Approach 1:
The support member is divided into multiple sections (first section, second section, third section) with the third section offset inwardly to engage the tablet. This segmentation allows each section to perform a specific function: the first and second sections provide structural support while the third section enables tablet engagement and movement, simplifying the overall design compared to complex joint systems.
Solution Approach 2:
The offset third section of the support member acts as an intermediary element between the base and the tablet. It transfers a substantial portion of the load from the tablet to the base while enabling the tablet to be moved between raised and lowered positions, replacing the need for expensive fastening mechanisms.
2Reliability
If a robust fastening mechanism is used to withstand substantial user forces, then the tablet remains stable during use, but the device complexity and manufacturing cost increase
Solution Approach 1:
The support member is segmented into functional sections where the third section is offset inwardly to engage the tablet. This segmentation creates a simple yet effective load transfer path that ensures tablet stability during use without requiring complex fastening mechanisms.
Solution Approach 2:
The offset third section of the support member automatically engages the tablet and provides load support through its geometric configuration. The structure itself performs the fastening and load-bearing function through its design, eliminating the need for additional complex fastening components.
Data Source
AI summary
A chair includes a base, a seat supported on the base, and a support member having an upper portion and at least one lower portion that is lower than the upper portion. The at least one lower portion of the support member is attached to at least one of the base and the seat. The upper portion of the at least one support member is attached to the at least one lower portion. A portion of the upper portion defines an offset positioned inwardly toward the seat relative to other sections of the upper portion. A tablet is moveably attached to the upper portion such that it is moveable from a first position to a second position. The offset is positioned so it supports the tablet when the tablet is in the second position and transfers a substantial amount of load supported by the offset to the support member.