Wireless Tag Boundary Perforation for Tool-Free Antenna Separation

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Solution Overview

Problem

Existing wireless tags used in applications like inventory management and security require a method to easily disconnect the antenna portion for reducing communication performance, which is challenging due to their flame-resistant packaging, typically requiring tools like shears or knives.

Innovation Solution

A wireless tag design with a boundary portion between the integrated circuit and antenna that is easily torn apart, utilizing a perforation pattern in the packaging to facilitate separation without tools, thereby reducing communication performance when separated.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the package is made flame-resistant and integral, then the reliability and protection of the wireless tag are improved, but the ease of separation between antenna and integrated circuit deteriorates

Engineering Contradiction:
Improveprotection of wireless tagVSAvoidease of separation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The package is divided into a first portion containing the integrated circuit and a second portion containing the antenna, with a boundary portion between them. The boundary portion has reduced thickness or is formed with a tear-line pattern, creating a predetermined separation path that allows easy division while maintaining the overall integral structure during normal use.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The boundary portion of the package has locally reduced thickness or different structural properties compared to the rest of the package. This localized modification creates a weak point that is easier to separate, while the main body of the package maintains its flame-resistant and protective properties.

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If tools like shears or knives are used to disconnect the antenna, then the manufacturing precision and clean separation are improved, but the device complexity and operation difficulty increase

Engineering Contradiction:
Improveclean separationVSAvoidoperation difficulty
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The package is pre-formed with a boundary portion that has reduced thickness or a tear-line pattern during manufacturing. This preliminary preparation creates a predetermined separation path that guides the separation process, eliminating the need for complex cutting tools and operations while ensuring clean separation.

Inventive Principle:
Principle #10Preliminary action

3Stability of the object's composition

If the package structure is made robust and integral, then the stability and protection are improved, but the ease of manufacture and assembly deteriorate

Engineering Contradiction:
Improveintegral package structureVSAvoidease of assembly
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The package is designed as an integral structure that can be easily divided into two portions along a predetermined boundary. The boundary portion has reduced thickness or tear-line patterns that facilitate separation, allowing the package to maintain its integral and protective properties during manufacturing and assembly while enabling easy division when needed.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8973839B2Wireless tag
Publication Date: 2015.03.10 FUJITSU LTD
  • US8973839B2 patent drawing
  • US8973839B2 patent drawing
  • US8973839B2 patent drawing

AI summary

A wireless tag includes: an antenna; an integrated circuit configured to be electrically connected to the antenna; a package configured to integrally subject the antenna and the integrated circuit to packaging; and a boundary portion configured to be located between a first portion including the integrated circuit in the package and a second portion not including the integrated circuit, wherein the boundary portion is configured so as to be more easily torn apart than a portion other than the boundary portion in the package.