J-Hook Adapter for Smaller Rack Stability
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Solution Overview
Problem
Users of smaller-sized 2×2 exercise racks face difficulties in finding commercially available j-hooks with a pin diameter that fits their equipment, as few companies manufacture j-hooks specifically for this size, while larger-sized j-hooks with suitable pin diameters are readily available.
Innovation Solution
A spacer adapter is designed to fit between the oversized j-hook and the smaller rack upright, featuring lateral overhangs that engage with the j-hook channels to prevent lateral movement and secure the adapter in place, allowing oversized j-hooks to be used on smaller racks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an oversized j-hook is used on a smaller rack, then the pin diameter compatibility issue is resolved, but the j-hook slides forward and becomes unstable
Solution Approach 1:
The adapter acts as an intermediary component between the oversized j-hook and the smaller rack upright. It fills the excess space and provides a mechanical interface that prevents the j-hook from sliding forward while maintaining pin diameter compatibility. The adapter's channel receives the j-hook's pin and its body fills the gap between the j-hook and upright, ensuring stability.
2Manufacturing precision
If a custom j-hook for 2×2 racks is manufactured, then the fit is perfect, but the cost and availability become problematic
Solution Approach 1:
The solution segments the problem into two separate components: the existing oversized j-hook (which is widely available) and the new adapter component (which provides the size adaptation). This allows users to keep using standard j-hooks while adding only the necessary adapter piece, rather than requiring completely custom j-hooks.
Solution Approach 2:
The adapter serves as an intermediary that enables compatibility between standard oversized j-hooks and smaller 2×2 racks. Instead of manufacturing entirely new j-hooks, the adapter mediates the interface between existing components and the rack, making the solution more accessible and cost-effective.
3Reliability
If the j-hook channel is positioned closer to the upright, then stability is improved, but the pin cannot be inserted through the upright holes
Solution Approach 1:
The adapter's channel structure mediates between the j-hook pin and the upright. The channel receives and secures the pin, allowing the j-hook to be positioned optimally for stability while maintaining ease of pin insertion through the adapter's accessible opening.
Solution Approach 2:
The adapter introduces an additional dimensional element between the j-hook and upright. By adding this intermediate component with its own channel structure, the system gains flexibility in positioning while maintaining both pin accessibility and j-hook stability.
Data Source
AI summary
A self-supporting apparatus of varying dimensions, which occupies the gap between the bracket of a j-hook channel and the adjoining squat rack upright. Spacer body is appropriately sized to encompass the excess space existing between the back channel of an oversized j-hook and the back side of the smaller squat rack upright, thereby providing a generalized means of adapting a larger bracket such that it may be coupled to a rack or rig of smaller size.


