Wire Gripper Pin Reinforcement for High-Load Swing Attachment
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Solution Overview
Problem
Existing wire grippers face issues with excessive force applied during tension maintenance of hung electric wires, leading to potential damage or breakage of components.
Innovation Solution
An attachment structure comprising a first pin member, a reinforcement member, and a fixing member that supports bending and torsional loads, preventing the swing member from coming out of the pin member and distributing loads effectively across the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a simple pin connection is used to attach the swing member to the first member, then the device complexity is reduced, but the strength and reliability are insufficient to withstand high loads
Solution Approach 1:
The attachment structure is divided into separate functional components: a first pin member for basic connection, a reinforcement member for load distribution, and a fixing member for securing. This segmentation allows each component to specialize in a specific function, achieving high strength without excessive overall complexity.
Solution Approach 2:
The attachment structure uses a composite design combining multiple members (pin member, reinforcement member, fixing member) made of different materials or structural characteristics. This composite approach enables the structure to withstand high loads by distributing stresses across different components with optimized properties.
2Reliability
If the swing member is directly attached to the first member without reinforcement, then the device complexity is minimized, but the reliability fails under excessive tension loads
Solution Approach 1:
The reinforcement member is pre-installed on the first pin member before the swing member is attached. This preliminary action ensures that the reinforcement structure is already in place to distribute loads, preventing failure under tension without requiring complex real-time adjustment mechanisms.
Solution Approach 2:
The reinforcement member acts as an intermediary element between the first pin member and the swing member. It mediates the load transfer, distributing the tension forces from the swing member across the first pin member and preventing direct stress concentration that would cause failure.
3Strength
If a reinforcement structure is added to support bending and torsional loads, then the strength is improved, but the ease of manufacture decreases
Solution Approach 1:
The reinforcement function is segmented into a separate reinforcement member rather than being integrated into the pin member or swing member. This allows the reinforcement member to be manufactured independently using optimized processes, then assembled through simple fitting and fixing operations.
Solution Approach 2:
The fitting groove design provides geometric feedback that guides the reinforcement member into proper alignment during assembly. The groove's shape and position ensure correct orientation and fit, reducing the need for complex alignment procedures or precision adjustments during manufacturing.
4Reliability
If multiple components are used in the attachment structure, then the reliability under high load is improved, but the device complexity increases
Solution Approach 1:
The fixing member combines multiple functions: it secures the reinforcement member to the first pin member, maintains proper positioning, and provides structural support. By merging these functions into a single component, the number of parts is minimized while maintaining reliability.
Solution Approach 2:
The first pin member serves multiple functions: it provides the basic rotational connection between the swing member and first member, serves as a mounting surface for the reinforcement member, and acts as a load transfer element. This multi-functionality reduces the need for separate specialized components.
Data Source
AI summary
The object is to provide an attachment structure that is for attaching a swing member to a first member of an operation tool and can withstand a high load acting on the swing member and to provide a wire gripper having the attachment structure. The attachment structure for attaching a swing member to a first member of an operation tool includes: the first member having a first through hole; the swing member having a second through hole; a first pin member having a shaft portion inserted through the first through hole and the second through hole; a reinforcement member that prevents the first member and the swing member from coming out of the first pin member and supports at least a part of a bending load or a torsional load received by the swing member; and a fixing member that fixes the reinforcement member to the first pin member. A fitting groove is provided in an outer circumference surface of the shaft portion of the first pin member. The reinforcement member includes an insertion portion inserted in the fitting groove and a retaining portion protruding out of the fitting groove. The fixing member fixes the reinforcement member to the first pin member with the reinforcement member being fit into the first pin member.