Coupling Member for Electric Power Tool Hanging Member Retention
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Solution Overview
Problem
Conventional coupling members for electric power tools fail to prevent damage when the holding portion breaks upon impact, leading to the hanging member being detached.
Innovation Solution
A coupling member designed to attach to the electric power tool main body, featuring a fastening body and attachment bodies coupled via hinges, allowing the hanging member to be hooked and maintained even if the holding portion breaks, with hook parts and engagement portions to distribute load and prevent detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional holding portion is used to attach the hanging member, then the structure is simple, but the holding portion breaks upon impact causing the hanging member to detach
Solution Approach 1:
The coupling member is divided into a fastening body and an attachment body that can open and close. The attachment body is further divided into multiple attachment portions that can independently engage with the electric power tool main body. This segmentation allows the structure to remain relatively simple while distributing the load across multiple engagement points, preventing single-point failure that would occur with a conventional simple holding portion.
Solution Approach 2:
The coupling member is designed with a structure that can withstand impact forces before they occur. The fastening body and attachment body are configured to maintain engagement even when subjected to sudden impact loads. The multiple attachment portions and engagement portions create redundant connection paths that prevent detachment upon impact, providing beforehand cushioning against the breaking failure mode of conventional simple holding portions.
2Stability of the object's composition
If the coupling member uses a rigid fixed structure, then the attachment is stable, but the coupling member cannot open and close smoothly
Solution Approach 1:
The coupling member transitions from a static fixed structure to a dynamic structure with movable components. The attachment body can open and close relative to the fastening body, allowing the system to adapt between two stable states: closed for secure attachment and open for removal or inspection. This dynamic capability enables smooth opening and closing while maintaining attachment stability when closed.
Solution Approach 2:
A hinge connects the attachment body to the fastening body, serving as an intermediary mechanism that enables controlled movement between the two bodies. The hinge allows the attachment body to rotate and open/close smoothly while maintaining a stable connected state when closed. This intermediary component resolves the contradiction by providing both mobility for operation and stability for attachment.
3Reliability
If the holding portion is designed to be strong against impact, then the attachment reliability improves, but the device complexity increases
Solution Approach 1:
Instead of designing a single complex impact-resistant holding portion, the structure is segmented into a fastening body and an attachment body with multiple attachment portions. Each portion can be relatively simple in design, but collectively they provide impact resistance through distributed engagement. This segmentation achieves impact resistance without requiring any single component to be overly complex.
Solution Approach 2:
The fastening body and attachment body are merged into a single coupling member assembly that functions as an integrated impact-resistant attachment system. The multiple attachment portions work together in unison to distribute impact forces, combining several simple elements into a unified structure that provides enhanced reliability without the complexity of a single monolithic impact-resistant component.
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
Ensures the hanging member remains attached to the coupling member, enhancing fall prevention and maintaining the attachment state even if the holding portion breaks, while allowing smooth opening and closing of the coupling member.
Implementation Method 1
one or more attachment bodies openably/closably coupled to the fastening body via one or more hinge
Data Source
AI summary
A coupling member for an electric power tool is provided. The coupling member can keep a hanging member being held, even when a holding portion of the tool for holding the hanging member breaks. A coupling member for an electric power tool is configured to hook a hanging member to an electric power tool main body and can fasten the electric power tool main body therein, when one of its parts opens or closes. Further, this coupling member can be attached to the electric power tool main body with the electric power tool main body fastened therein or removed therefrom. Further, the hanging member can be hooked to the coupling member.