Band Coupling Structure with Rotating Conductive Wires

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Solution Overview

Problem

Conductive wristwatch-type radio receivers face challenges with antenna resonance due to conductive materials in the main body case, leading to poor reception of high-frequency radio waves, and existing band coupling structures lack adjustability and secure electrical connections, causing discomfort and unfitness when worn.

Innovation Solution

A band coupling structure with a projection pin section and lock pin mechanism that allows bands to rotate and adjust, maintaining electrical connection and enabling easy attachment/detachment, while incorporating an energizing mechanism to ensure constant contact and secure fit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If an antenna is enclosed in a main body case made of conductive material, then the structure is compact and protected, but the magnetic flux is absorbed and resonance phenomenon is prevented, deteriorating the receiving function

Engineering Contradiction:
Improvestructural protectionVSAvoidreceiving function
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent divides the conductive material structure into segmented sections with non-conductive spacers inserted between them. This segmentation prevents continuous magnetic flux absorption while maintaining structural protection, allowing resonance phenomenon to occur and receiving function to be maintained.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Non-conductive spacers are introduced as intermediary elements between conductive material sections. These spacers act as mediators that prevent magnetic flux absorption while maintaining the protective structure, enabling the antenna to resonate properly within the compact housing.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the opening area of an antenna is enlarged to improve antenna gain, then the receiving performance is improved, but the main body is enlarged, deteriorating portability and external appearance

Engineering Contradiction:
Improveantenna gainVSAvoidmain body size
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The patent extends the antenna structure into the width direction of the band rather than enlarging the main body. By utilizing the band width dimension, the antenna achieves larger opening area and improved gain while keeping the main body compact and portable.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Strength

If bands are made rigid for secure structure, then structural strength is improved, but adjustability and comfort when worn are deteriorated

Engineering Contradiction:
Improvestructural strengthVSAvoidadjustability
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The patent introduces a rotation mechanism that allows the bands to dynamically adjust their relative positions. The bands can rotate to different angles to accommodate various wrist sizes and shapes, providing adjustability and comfort while maintaining structural strength through the coupling section.

Inventive Principle:
Principle #15Dynamics

4Reliability

If conductive wires are connected through fixed band coupling structures, then electrical connection is established, but the connection becomes insecure during band rotation, causing discomfort and unfitness

Engineering Contradiction:
Improveelectrical connectionVSAvoidwear comfort
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent employs a dynamic connection mechanism where conductive wires are positioned to maintain contact during band rotation. The connection structure adapts to the rotation movement, ensuring continuous electrical connection between antenna members while allowing the bands to adjust for comfort.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent uses intermediate connection elements that facilitate electrical contact between bands during rotation. These intermediaries ensure secure electrical connection while accommodating the dynamic movement and adjustment of the bands for wear comfort.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS7397437B2Band coupling structure incorporating conductive wires
Publication Date: 2008.07.08 CITIZEN WATCH CO LTD
  • US7397437B2 patent drawing
  • US7397437B2 patent drawing
  • US7397437B2 patent drawing

AI summary

A band coupling structure incorporating conductive wires, in the case in which the bands are coupled with each other, the edge portion of the connection pin is abutted to and electrically connected to the connection pin fitting section, and one coupling part and another coupling part of the band coupling section can rotate to each other in the width direction of the bands on the axis of the band coupling section by locking the band coupling lock pin with the lock pin locking section.