Rotating Chain Trap for Compact Barbell Safety Locking
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Solution Overview
Problem
Home weightlifting environments lack safety mechanisms due to spatial constraints and the absence of compact, economical solutions for securing heavily weighted barbells, which are typically found in commercial gyms with large equipment.
Innovation Solution
A compact, moving-part-free chain trap that can be attached to various surfaces and chains, allowing secure locking and unlocking by rotating the device, enabling safe and versatile use in both vertical and horizontal planes, and incorporating features for auto-release mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional safety mechanisms are used in home gyms, then safety is improved, but space requirements and cost increase significantly
Solution Approach 1:
The safety mechanism is divided into separate modular components: a wall-mounted base unit and a barbell-integrated chain trap. This segmentation allows the safety function to be distributed across multiple smaller elements rather than requiring one large monolithic device, thus reducing overall space requirements while maintaining safety functionality.
Solution Approach 2:
The chain trap mechanism is nested within the barbell structure itself, with the trap body integrated into the barbell tube and the chain linkage contained within the same structural envelope. This nesting eliminates the need for separate safety equipment and reduces the space required for safety mechanisms.
2Reliability
If traditional safety mechanisms are used in home gyms, then safety is improved, but device complexity and cost increase
Solution Approach 1:
The complex mechanical components of traditional safety mechanisms (springs, latches, multiple moving parts) are extracted and replaced with a simplified chain-based trapping mechanism. The safety function is achieved through the geometric configuration of the chain links and trap body rather than complex mechanical assemblies, reducing both complexity and cost.
Solution Approach 2:
The chain trap mechanism is designed to be self-actuating through the natural motion of the barbell and chain tension. The trap automatically engages when the barbell reaches the safety position and automatically releases when the barbell is properly positioned, eliminating the need for complex control systems, sensors, or manual operation mechanisms.
3Ease of operation
If the chain trap body is rotated through an acute angle for unlocking, then ease of operation is improved, but the mechanism requires precise angular control
Solution Approach 1:
The locking and unlocking mechanism utilizes dynamic chain tension rather than static angular positioning. The acute rotation of the trap body creates a dynamic geometric configuration that naturally locks or unlocks based on chain tension forces, eliminating the need for precise angular control while maintaining ease of operation.
Data Source
AI summary
A chain catch that is capable of being attached to various bases so as to allow the quick and simple affixation of the chain catch to any vertical chain. The chain catch has an upper body and a lower body. The upper body is designed to trap a vertical chain within its internal design while it remains within its vertical orientation, and the lower body is designed to attach to a load and to the upper body. When the tension is taken off of the chain within the chain catch and the upper body is tilted, the chain may be vertically raised, free from the chain catch or the chain catch and its attached barbell can be vertically raised.