Helical Thread Insert With Tapered Lead-In for Tool-Free Fastening
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Solution Overview
Problem
Existing fastening technologies, such as helical coil and tangless inserts, require dedicated tools, leading to increased operational time and costs, and there is a need for further reduction in fastening time and elimination of the need for dedicated tools.
Innovation Solution
A fastening aid formed into a helical shape with a tapered portion and a body portion, designed to reinforce the female thread of a tapped hole, allowing fastening with a general-purpose tool and reducing the need for a dedicated tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dedicated tool is used for fastening the fastening aid, then the fastening operation can be performed, but the cost increases and operational time increases
Solution Approach 1:
The fastening aid is designed with a head portion that can be engaged by general-purpose tools such as hex keys or Allen keys, eliminating the need for dedicated fastening tools. This universal compatibility allows the same fastening mechanism to be used with standard tools available in most workshops, thereby reducing operational time and costs while maintaining ease of operation.
Solution Approach 2:
The fastening aid采用简单易制造的结构，可以使用 inexpensive 的材料和通用的加工方法制成。通过采用这种低成本的设计，即使是一次性使用，也能显著降低整体成本，同时避免了专用工具的高成本投入。
2Ease of operation
If a dedicated tool is used for fastening the fastening aid, then the fastening operation can be performed, but the cost increases
Solution Approach 1:
The fastening aid is designed with a head portion that can be engaged by general-purpose tools such as hex keys or Allen keys, eliminating the need for dedicated fastening tools. This universal compatibility allows the same fastening mechanism to be used with standard tools available in most workshops, thereby reducing operational time and costs while maintaining ease of operation.
Solution Approach 2:
The fastening aid采用简单易制造的结构，可以使用 inexpensive 的材料和通用的加工方法制成。通过采用这种低成本的设计，即使是一次性使用，也能显著降低整体成本，同时避免了专用工具的高成本投入。
3Productivity
If existing fastening technologies are used, then the fastening operation can be performed, but the fastening time increases
Solution Approach 1:
The fastening aid is pre-assembled with the bolt in a kit, so that when installation is needed, the operator only needs to insert the pre-assembled unit into the tapped hole and tighten it. This preliminary assembly eliminates the need for separate operations of installing the fastening aid and then the bolt, thereby significantly reducing fastening time and improving productivity.
Solution Approach 2:
The fastening aid is designed with a head portion that can be engaged by general-purpose tools such as hex keys or Allen keys, eliminating the need for dedicated fastening tools. This universal compatibility allows the same fastening mechanism to be used with standard tools available in most workshops, thereby reducing operational time and costs while maintaining ease of operation.
Data Source
Figure 1
Figure 2(a)~2(c)
AI summary
Problem to be Solved: To provide a fastening aid that can be fastened without using a dedicated tool. Solution to the Problem: A fastening aid, formed of a wire processed into a helical shape, for reinforcing a female thread portion of a tapped hole formed in a fastening target of a bolt, wherein an insertion side into the tapped hole has a tapered portion, and an inner diameter of the tapered portion is equal to or smaller than a root diameter of a male thread portion of the bolt.