Multi-Tool Storage With Sliding Connection, No Steer-Tube Threads
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Solution Overview
Problem
Existing bicycle tool storage solutions face issues such as reduced usability due to smaller diameters, difficulty in installation and removal of tools, requirement for threading the fork steer tube, and incompatibility with certain materials, leading to weakened frames and voided warranties.
Innovation Solution
A multi-tool assembly with interconnected tool bits and a container, allowing easy assembly and disassembly, and a headset tightener that does not require threading, ensuring compatibility with various materials and maintaining the fork tube's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If threads are cut in the inner surface of the fork steer tube to install a threaded top cap for headset preload, then the headset assembly can be preloaded, but the internal diameter for inserting a tool assembly is reduced and the fork steer tube is weakened
Solution Approach 1:
The invention divides the headset tightening function into two separate components: an external tightening tool that applies force to the top cap, and a star nut internal component that distributes the preload force. This segmentation avoids cutting threads in the steer tube, maintaining its structural integrity while still achieving the required headset preload.
Solution Approach 2:
The star nut acts as an intermediary component between the top cap and the headset bearings. Instead of directly threading into the steer tube, the star nut engages with the top cap externally and transfers the preload force to the bearings through its internal geometry, eliminating the need for threaded holes in the steer tube.
2Reliability
If a threaded top cap is installed to preload the headset, then the headset assembly can be tightened, but a special tool is required for adjusting the headset preload
Solution Approach 1:
The top cap is designed with a universal interface that can be operated with common bicycle tools (such as hex keys or screwdrivers) rather than requiring a special proprietary tool. The star nut's external hex or flat interface allows adjustment using standard tools included in most bicycle tool kits, making the system universally compatible and easier to operate.
3Reliability
If the internal diameter of the top cap is made smaller to achieve headset preload, then the preload function is achieved, but the outer diameter of the tool kit is reduced and usability is affected
Solution Approach 1:
Instead of reducing the top cap's internal diameter to achieve preload (which shrinks the tool kit), the invention inverts the approach by using an external tightening mechanism. The top cap maintains its full internal diameter for tool kit insertion, while the star nut's external hex interface provides the tightening function, effectively swapping the location where dimensional constraints apply.
4Reliability
If the fork steer tube is threaded to install a top cap, then the headset can be preloaded, but the fork warranty is voided and compatibility with certain materials is restricted
Solution Approach 1:
The invention extracts the threading operation from the steer tube and relocates it to the star nut component. By taking out the requirement for threaded holes in the steer tube, the system becomes compatible with all steer tube materials (aluminum, steel, carbon fiber) and maintains factory warranties, while the threading function is preserved in the removable star nut assembly.
Data Source
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AI summary
A tool storage assembly, comprising a container assembly, and at least a multi-tool assembly, removably connected to said container assembly, wherein said container assembly and said multi-tool assembly comprise respective sliding connection portions that engage each other.