Weightlifting Rack Bracket Assembly for High-Load J-Cup Strength
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Solution Overview
Problem
Existing weightlifting brackets and hooks, such as J-cups, face issues with safety and strength, particularly under high usage and weight loads, leading to potential failure and premature deformation, which can result in bodily injury and require frequent replacement.
Innovation Solution
A bracket assembly design featuring a back plate with a pin opening and a clasp member forming a channel to securely engage with the rack beam, combined with an extension member providing a support surface, where a pin with an enlarged head is welded to enhance mechanical strength and stability, and optional protective panels for added safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional J-cup brackets are used with pins and channels, then the device complexity is low and ease of manufacture is good, but the strength and reliability are insufficient under high weight loads and repeated usage
Solution Approach 1:
The patent combines multiple structural elements into an integrated bracket assembly: the back plate with pin opening, the clasp member forming the channel, and the extension member with support surface are merged into a single cohesive unit. This integration strengthens the overall structure while maintaining manufacturability through standardized components.
Solution Approach 2:
The bracket assembly utilizes composite construction with the back plate, clasp member, and extension member potentially made from different materials or material treatments optimized for their specific functions. The welded joint between the pin head and back plate creates a composite structure that distributes stress more effectively than traditional single-material brackets.
2Adaptability or versatility
If brackets are positioned at multiple locations on beams for different exercises, then the adaptability is improved, but the reliability decreases due to increased usage and deformation
Solution Approach 1:
The bracket assembly is segmented into distinct functional components: the back plate for mounting, the clasp member for beam engagement, and the extension member for support. This segmentation allows each component to be optimized for its specific function while maintaining overall reliability through modular construction that can be manufactured and replaced independently.
3Strength
If the pin is simply inserted through the back plate without welding, then the ease of manufacture is high, but the strength and stability are insufficient
Solution Approach 1:
The pin head is pre-formed with an enlarged portion that fits into a corresponding recess in the back plate before welding. This preliminary shaping ensures proper alignment and positioning prior to the welding process, making the manufacturing sequence more efficient while achieving superior connection strength.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The enhanced bracket assembly significantly improves mechanical strength and safety by providing a secure and stable support for weightlifting equipment, reducing the risk of injury and extending the lifespan of the equipment by withstanding increased usage and weight loads.
Implementation Method 1
The head is welded to the outer side of the back plate
Data Source
AI summary
A bracket assembly includes a back plate with outer and inner sides and a pin opening extending therethrough. A clasp member has an extending portion and an encasing portion extending from the extending portion. The extending and encasing portions and the inner side of the body define a channel configured to receive a rack beam. A pin seated in the pin opening has a shank, and a head at the outer side of the back plate. The shank extends through the opening into the channel. The shank is configured to engage the rack beam within the channel. The head is welded to the outer side of the back plate. An extension member defines a support surface and includes pair of substantially J-shaped plates and a cover nested with the plates such that it forms the entire support surface and is substantially flush with sides of the substantially J-shaped plates.