Ratchet Wrench with Integrated Bicycle Toolset
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Solution Overview
Problem
Existing ratchet wrenches are larger and heavier than traditional wrenches, making it difficult to design a compact ratchet wrench that can be combined with bicycle tools without increasing size and weight.
Innovation Solution
A ratchet wrench design that incorporates a bicycle toolset, featuring a main body with a ratchet drive head and an accommodating cavity, which includes a detachable toolset with a connector, plug, and inflator adapter, allowing for a compact and lightweight combination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a ratchet wrench is designed to be compact and lightweight for bicycle use, then it becomes easier to carry and less burdensome for users, but it becomes difficult to maintain the ratchet mechanism functionality
Solution Approach 1:
The patent embeds the ratchet mechanism inside the hollow handle structure of the bicycle tool. The ratchet drive head is positioned within the handle cavity, and the ratchet pawl engages with the drive head through openings in the handle wall. This nesting approach allows the ratchet mechanism to be integrated into the compact handle without increasing overall size, maintaining both lightweight portability and functional reliability
Solution Approach 2:
The patent divides the tool into modular components: a handle with integrated ratchet mechanism, a removable tool head, and a drive shaft. The ratchet mechanism is segmented into the drive head (with drive teeth), the pawl (with engagement surface), and the spring assembly. This segmentation allows each component to be optimized for its specific function while maintaining compact overall dimensions suitable for bicycle tool portability
2Adaptability or versatility
If a ratchet wrench is combined with bicycle tools, then multi-functionality is achieved, but the device complexity increases
Solution Approach 1:
The patent designs the handle as a universal platform that can accommodate multiple tool heads through the standardized drive mechanism. The ratchet drive head can engage with various bicycle tool attachments (chain tools, spoke wrenches, etc.) by replacing the tool head while keeping the handle and ratchet mechanism intact. This universal interface approach enables multi-functionality without proportionally increasing device complexity
Solution Approach 2:
The patent merges the ratchet wrench functionality with bicycle-specific tools by integrating the ratchet mechanism into the handle of the bicycle tool. The handle serves dual purposes as both the grip for the bicycle tool and the housing for the ratchet mechanism. This merging eliminates the need for separate ratchet wrench and bicycle tool devices, achieving multi-functionality while controlling overall complexity
3Volume of moving object
If the ratchet mechanism is integrated into the handle, then compact size is achieved, but the ease of operation may be affected
Solution Approach 1:
The patent creates localized access points in the handle wall where the ratchet pawl engages with the drive head. These openings are strategically positioned to allow finger access for actuating the ratchet mechanism while maintaining the overall compact handle structure. The local modification of the handle wall provides operational access without compromising the compact integrated design
Solution Approach 2:
The patent uses the handle wall openings as intermediaries between the user's fingers and the ratchet pawl. The openings allow the user to insert fingers to push or pull the pawl for engaging or disengaging the ratchet mechanism, providing a mechanical interface that bridges the user and the internal ratchet components without requiring larger access openings that would increase handle size
Data Source
AI summary
A ratchet wrench including a bicycle toolset combined therewith includes a main body with a ratchet drive head and an accommodating cavity. A detachable toolset is housed within the cavity and includes a connector, plug, and inflator adapter. The inflator adapter provides an air channel for inflating purposes, ensuring lightweight, multifunctional usability.