Fastener Structure for Quick Coupling and Easy Unfastening

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Solution Overview

Problem

Conventional fastening methods using screws make it difficult to unfasten coupled objects, rendering the coupling process cumbersome and inefficient.

Innovation Solution

A fastener structure comprising a head portion, a rod member, and a fitting member, which allows for quick coupling and easy unfastening by penetrating and separating objects using a resilient component and a tool-operated mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If screws are used to fasten two objects together, then the coupling strength and firmness are improved, but the ease of unfastening deteriorates

Engineering Contradiction:
Improvecoupling strengthVSAvoidease of unfastening
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The fastening system is divided into separate components: a fastener with a head portion and a rod member that can be independently inserted and removed. This segmentation allows the objects to be firmly coupled when assembled while enabling easy separation by simply withdrawing the rod member, eliminating the need to undo threaded connections.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of using threads that require rotational undoing, the invention inverts the fastening mechanism to a linear insertion-removal system. The rod member is inserted through the objects to create a firm connection, and unfastening is achieved by simply pulling the rod member out, reversing the conventional screw fastening approach.

Inventive Principle:
Principle #13The other way round (Inversion)

2Stability of the object's composition

If screws are used to fasten two objects together, then the coupling firmness is improved, but the complexity of the coupling process increases

Engineering Contradiction:
Improvecoupling firmnessVSAvoidcoupling process complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The fastening system is divided into separate components: a fastener with a head portion and a rod member that can be independently inserted and removed. This segmentation allows the objects to be firmly coupled when assembled while enabling easy separation by simply withdrawing the rod member, eliminating the need to undo threaded connections.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If a simple fastening structure is used, then the ease of operation is improved, but the coupling strength deteriorates

Engineering Contradiction:
Improveease of useVSAvoidcoupling strength
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The invention merges the simplicity of a linear insertion mechanism with the strength of a secured connection. The rod member passes through both objects and is retained by the head portion's receiving cavity and positioning structures, combining the ease of simple insertion with the firmness of a secured fastening that prevents accidental separation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The fastening system incorporates dynamic elements such as resilient members that can deform to accommodate assembly variations and provide continuous contact force. This allows the simple insertion operation to result in a dynamically secure connection that maintains coupling strength while preserving ease of operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12565906B2Method of assembling fastener structure
Publication Date: 2026.03.03 WANG TING JUI
  • US12565906B2 patent drawing
  • US12565906B2 patent drawing
  • US12565906B2 patent drawing

AI summary

A fastener structure includes a head portion, rod member and fitting member. The head portion has a lateral holding portion and vertical receiving portion. The rod member has a lateral attaching portion and engaging member. The rod member is penetratingly disposed at the receiving portion to allow the attaching portion to correspond in position to the holding portion. The fitting member is penetratingly disposed at the attaching portion and the holding portion to fit the head portion and the rod member together. To couple two objects together, the head portion drives an engaging portion of the rod member, such that the engaging portion penetrates one object before being fastened to the other object. To unfasten the objects, the head portion is moved reversely to remove the engaging portion from the other object, effecting separation of the objects, so as to achieve quick coupling and easy unfastening.