Cylindrical Ratchet Handle Integrating Multi-Tool Assembly

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Solution Overview

Problem

Conventional ratchet handles with a single tool are inconvenient for use on various occasions, leading to tool redundancy and increased storage and loss issues due to separate tools.

Innovation Solution

A cylindrical ratchet handle with an accommodation cavity housing a multi-tool assembly that is rotatable, featuring a first and second outer casing with ratchet teeth and a detent-spring mechanism, allowing multiple tools to be integrated into a single unit for convenience and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate tools are used to meet different occasion demands, then tool functionality and versatility are improved, but storage complexity and risk of loss increase

Engineering Contradiction:
Improvetool functionalityVSAvoidstorage complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple separate tools are merged into a single integrated ratchet handle assembly. The patent combines a ratchet mechanism with multiple interchangeable tool bits (screwdriver bits, socket bits, etc.) into one unified structure, allowing users to access different tool functions without managing separate tools. This reduces storage complexity while maintaining versatility.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The ratchet handle is designed as a universal tool that can perform multiple functions through interchangeable bits. The handle incorporates a ratcheting mechanism that works with various tool types (flathead, Phillips, socket bits), making it a multi-functional device that replaces several separate tools while maintaining adaptability to different occasions.

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

2Adaptability or versatility

If multiple separate tools are used to meet different occasion demands, then tool functionality and versatility are improved, but the risk of loss increases

Engineering Contradiction:
Improvetool functionalityVSAvoidrisk of loss
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

Multiple separate tools are merged into a single integrated ratchet handle assembly. The patent combines a ratchet mechanism with multiple interchangeable tool bits (screwdriver bits, socket bits, etc.) into one unified structure, allowing users to access different tool functions without managing separate tools. This reduces storage complexity while maintaining versatility.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If a single tool is used in the ratchet handle, then the structure is simple, but convenience for use on various occasions is reduced

Engineering Contradiction:
Improvestructure simplicityVSAvoidconvenience for use
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The ratchet handle incorporates a dynamic bit selection mechanism that allows users to quickly interchange tool bits during operation. The handle features a removable bit holder that can be easily detached and reattached with different bits, enabling the structure to adapt dynamically to different operational needs while maintaining overall structural simplicity.

Inventive Principle:
Principle #15Dynamics

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 integrated multi-tool design enhances usability by allowing quick access to desired tools, reducing waste and storage complexity while maintaining a compact, easy-to-hold cylindrical form.

Implementation Method 1

A spring is provided between the detent and the accommodation groove

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The interior of the first outer casing is provided with ratchet teeth

Methodology Applied
Scientific EffectRatchet mechanism: Ratchet

Data Source

PatentEP3127659B1Ratchet tool
Publication Date: 2020.04.22 SHANGHAI QIMAI HARDWARE
  • EP3127659B1 patent drawingFigure 1~2
  • EP3127659B1 patent drawingFigure 3~4
  • EP3127659B1 patent drawingFigure 5~7

AI summary

A ratchet tool comprises a cylindrical ratchet handle (1) and a multi-tool assembly (2). The multi-tool assembly is fixed to the ratchet handle and can rotate with respect to the ratchet handle. The multi-tool assembly is provided with a plurality of tools. The ratchet tool can save time and effort, and the housing of the ratchet handle is cylindrical so as to facilitate a user to hold.