Piercing Needle Fastener for Trace-Free Fabric Joining
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Solution Overview
Problem
Conventional methods for forming a handbag by wrapping cloth require the opening to remain open, and using metal fittings necessitates cumbersome processes like caulking or sewing, which are time-consuming and leave traces on the material.
Innovation Solution
A fastening tool featuring a piercing needle and pierce catch mechanism that allows for easy attachment and detachment of cloth or leather materials without requiring any processing, using magnetic or ball catch structures to securely close and open the opening portion, enabling multiple binding positions and reuse of materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If normal metal fittings or fasteners are used, then the opening portion can be closed, but troublesome processes such as caulking and sewing are required
Solution Approach 1:
The invention extracts the piercing needle from the traditional fastener structure, allowing it to be separately inserted through the material without requiring pre-drilled holes or complex assembly. The needle is taken out as a separate functional element that can penetrate directly through the fabric to secure the fastener components.
Solution Approach 2:
The fastener components (male and female parts) are prepared in advance with integrated piercing needles and retention structures. The needles are pre-positioned within the fastener housings, so that when the fastener is applied, the piercing action and securing action occur simultaneously without requiring separate preparatory steps like drilling or caulking.
2Ease of operation
If piercing needle and pierce catch mechanism are used, then attachment and detachment are easy without processing, but secure holding of the needle is required
Solution Approach 1:
The piercing needle is nested within the pierce catch structure, which provides a housing that contains the needle when not in use. The catch mechanism features internal geometric interlocking where the needle shaft fits into recesses and is retained by spring-loaded or friction-based holding elements, creating a nested configuration that protects and secures the needle.
Solution Approach 2:
The pierce catch mechanism incorporates dynamic elements such as springs or movable retaining walls that automatically adjust to hold the needle securely during insertion and provide controlled release during removal. The mechanism transitions between locked and unlocked states through simple user actions, maintaining reliability while enabling ease of operation.
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
Enables the formation of bags, scarves, or cloaks without leaving traces, with easy attachment and detachment, allowing for multiple uses and optimal opening/closing forces, and can be applied to various positions, such as tote bags, without the need for complex processing.
Implementation Method 1
using magnetic or ball catch structures to securely close and open the opening portion
Implementation Method 2
using magnetic or ball catch structures to securely close and open the opening portion
Data Source
Figure 1a~2b
Figure 3a~4b
Figure 5a~6b
AI summary
To provide a fastening tool that can solve problems that are raised upon locking the opening portion of clothing, baggage or the like, and can also positively lock the portion to be locked at a desired position without the necessity of any processing jobs, such as caulking, sewing and the like, so as to be freely detachably locked. The fastening tool is provided with at least a pair of fastening members a and b which have detachably attaching portions that are freely detachably attached to each other, and each of the fastening members a and b has a substrate with a piercing needle formed on one of the surfaces, a bottom plate that is penetrated by the piercing needle, a pierce catch made of a cap-shaped member to cover the tip of the penetrated piercing needle, and detachably attaching portions that are freely detachably engaged with each other.