Modular Pivoting Wrench Structure for Extendable Reach
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Solution Overview
Problem
Conventional bendable spanners have a fixed number of pivot units, limiting the extendability of their pivotal mechanism and utility, and lack additional driving mechanisms beyond the driving head.
Innovation Solution
A wrench structure with a first body, second body, first connecting member, and pivot members, allowing for a three-stage or multi-stage pivotal mechanism through serial connections, and incorporating Y- or H-shaped connecting members to expand the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional bendable spanner uses a fixed pivot unit connected between the driving head and the holding portion, then the structure is simple, but the pivotal mechanism cannot be extended and the utility is limited
Solution Approach 1:
The wrench is divided into multiple independent modules: driving head, connecting members (Y-shaped or H-shaped), pivot units, and holding portions. Each module can function independently or be combined with others, allowing the pivotal mechanism to be extended by adding more modules without redesigning the entire structure.
Solution Approach 2:
The connecting members are designed with universal interfaces that can connect to multiple types of pivot units and holding portions. The Y-shaped and H-shaped connecting members can accommodate different configurations, enabling a single connecting member design to serve multiple functions and extend the utility of the wrench system.
2Adaptability or versatility
If only a single driving head is used in the conventional bendable spanner, then the structure is simple, but the driving mechanism utility is limited
Solution Approach 1:
The wrench system incorporates multiple driving mechanisms (first driving mechanism in the driving head and second driving mechanism in the connecting member) that can both perform driving functions. This allows the user to select different driving points depending on the application, significantly expanding the utility of the driving mechanism while maintaining a relatively simple overall structure.
Solution Approach 2:
The connecting member acts as an intermediary between the driving head and the holding portion, and itself possesses driving capability. This intermediary component transfers and transmits driving force while also providing an additional driving interface, thereby expanding the driving mechanism utility without requiring direct connection between multiple driving heads.
3Adaptability or versatility
If the pivot unit is fixed between the driving head and holding portion, then the structure is stable, but the number of pivot units cannot be added
Solution Approach 1:
The pivotal mechanism is segmented into multiple independent pivot units that can be distributed along the connecting members. Instead of having a single fixed pivot unit, the structure allows for multiple pivot units to be added at different locations, enabling extension of the bending mechanism while maintaining structural stability through modular assembly.
Solution Approach 2:
The pivot units are arranged not only in the primary bending dimension but also in spatial configurations enabled by the Y-shaped and H-shaped connecting members. This allows pivot units to be added in additional spatial dimensions, expanding the pivotal mechanism's capability without simply extending the linear configuration.
Data Source
AI summary
A wrench structure includes a first body, a second body, a first connecting member, and two pivot members. The first body is provided with a first pivot portion, two first recesses, and a first through hole. The second body is provided with a second pivot portion, a second recess, and a second through hole. The first connecting member is pivotally connected between the first body and the second body and has a first end provided with a third pivot portion, a third recess, and a third through hole and a second end provided with a fourth pivot portion, two fourth recesses, and a fourth through hole. One of the pivot members extends through the third through hole and the first through hole, and the other one the pivot members extends through the second through hole and the fourth through hole.