Pivoting Bicycle Multi-Tool for Chain Breaking and Tire Plugging

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Solution Overview

Problem

Existing bicycle multi-tools do not efficiently address the need for a compact device that can both break and repair a chain and plug a tire, lacking a unified solution for these common bicycle maintenance tasks.

Innovation Solution

A multi-tool with a cylindrical body and pivotally coupled head that can be rotated between neutral and operable positions, featuring a cradle for chain support, an extractor bolt for chain links, and a tire plug fork for inserting plugs, allowing for both chain breaking and tire plugging in a single device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate tools are used for chain breaking and tire plugging, then each tool can be optimized for its specific function, but the overall device complexity and the number of tools required increases

Engineering Contradiction:
Improvemulti-functionalityVSAvoidtool integration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines chain breaking and tire plugging functions into a single multi-tool device. The head assembly integrates a chain breaker mechanism with a tire plug fork, allowing both functions to be performed with one tool rather than requiring separate tools for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The multi-tool is designed with universal functionality to perform multiple bicycle maintenance tasks. The head can be configured with different components (chain breaker or tire plug fork) to address different bicycle repair needs, making it a versatile tool for various maintenance scenarios.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If a compact multi-tool is designed to perform multiple functions, then convenience is enhanced, but the device complexity increases

Engineering Contradiction:
ImproveconvenienceVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The multi-tool is divided into distinct modular components including a handle, a head assembly, and interchangeable functional components. The head can be separated and reconfigured depending on whether chain breaking or tire plugging is needed, allowing the tool to maintain simplicity for each specific task while providing versatility when combined.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The head assembly is designed to be rotatable and reconfigurable relative to the handle. This dynamic configuration allows the user to switch between different functional components (chain breaker or tire plug fork) by rotating or detaching the head, providing ease of operation while maintaining a compact form factor.

Inventive Principle:
Principle #15Dynamics

3Quantity of substance

If a single tool performs both chain breaking and tire plugging, then the quantity of tools is reduced, but the manufacturing complexity increases

Engineering Contradiction:
Improvenumber of toolsVSAvoidmanufacturing complexity
Core Design Contradiction:
Quantity of substanceVSEase of manufacture

Solution Approach 1:

The tool is manufactured as separate modular components (handle, head, functional attachments) that can be produced independently using standard manufacturing processes. This segmentation allows each component to be manufactured separately with simpler processes, then assembled into the complete multi-functional tool, reducing overall manufacturing complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The head assembly serves as a universal component that can accommodate different functional attachments (chain breaker or tire plug fork). This universal design allows manufacturers to produce the head in larger quantities as a standard component, reducing per-unit manufacturing complexity while enabling multiple functions through interchangeable attachments.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11554475B2Multi-tool
Publication Date: 2023.01.17 WOLF TOOTH COMPONENTS LLC
  • US11554475B2 patent drawing
  • US11554475B2 patent drawing
  • US11554475B2 patent drawing

AI summary

A multi-tool includes a cylindrical body and a head extended from an end of the cylindrical body, the head to be pivoted between a first position with the head aligned with the cylindrical body and a second position with the head oriented at an angle to the cylindrical body, the head including a cradle to support a segment of a roller chain.