Bicycle Rack Assembly Features for Solo Subassembly Alignment
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Solution Overview
Problem
Existing equipment racks, such as bicycle racks, are often delivered in a partially assembled state, making it difficult for end users to hold sizable components in place during assembly due to their weight and size, requiring assistance or additional costs for assembly.
Innovation Solution
The equipment rack features a support member with an upper chamfer portion and a platform member with a saddle, utilizing attachment features like apertures, protrusions, and indentations to temporarily hold subassemblies in place, allowing for easier assembly and disassembly without the need for multiple fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If sizable components are used to ensure structural strength, then the rack can support heavy loads, but it becomes difficult for end users to hold components in place during assembly
Solution Approach 1:
The patent applies preliminary action by providing pre-assembled subassemblies (platform members with support members already attached) that users can install as complete units rather than assembling individual components. This allows the heavy structural elements to be pre-positioned and secured together, reducing the difficulty of handling sizable components during assembly while maintaining structural strength.
Solution Approach 2:
The patent uses an intermediary mechanism in the form of a temporary holding feature (such as a detent, clip, or positioning element) that temporarily secures the platform member to the support member during assembly. This intermediary feature allows the heavy components to be held in place without requiring the user to manually support them, facilitating easier assembly while maintaining the structural integrity of the final assembly.
2Strength
If multiple fasteners are used to secure subassemblies, then the connection strength is improved, but the assembly complexity and number of steps increase
Solution Approach 1:
The patent merges multiple fastening functions into a single integrated fastening feature. The temporary holding feature combines positioning, alignment, and securing functions that would otherwise require multiple separate fasteners. This reduces assembly complexity by minimizing the number of fastening operations while maintaining adequate connection strength through the combined action of the integrated feature.
Solution Approach 2:
The patent applies universality by designing the temporary holding feature to perform multiple functions simultaneously: it provides temporary mechanical support, ensures proper alignment, prevents rotation or mispositioning, and facilitates easy removal during disassembly. This multi-functional feature replaces what would traditionally require multiple specialized fasteners, reducing overall assembly complexity while maintaining connection strength.
Data Source
AI summary
Equipment such as bicycle racks are often delivered to the end user in a partially assembled state. The component subassemblies may be heavy or unwieldy in size, making it difficult for the end user to hold the subassemblies in the correct positions with respect to each other while attaching the fasteners that hold the subassemblies together while the equipment is in use. An equipment rack is described having features that hold the subassemblies in an assembled configuration while the operational fasteners are added or engaged to hold the equipment rack in its final, assembled configuration. These features may be surface features that the end user is able to engage with each other to provide support to subassemblies and hold them in the proper orientation and position while the operational fasteners are aligned, inserted, tightened, or otherwise affixed to the assembled parts.