Coil Assembly Coating for Stable Terminal Soldering

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Solution Overview

Problem

Conventional coil structures in wireless transmitters face challenges in maintaining the stability and performance of winding turns during soldering processes, as the terminal parts of the metal wire can become loose, and positioning issues arise during electrical connections.

Innovation Solution

A coating layer is formed to encapsulate the terminal parts and winding turns of the coil, using materials like resin, silicone, or plastic, to stabilize the structure and facilitate automatic soldering processes, ensuring secure electrical connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the terminal part of the metal wire is exposed from the insulating layer for electrical connection, then electrical connection is enabled, but the terminal part cannot be positioned firmly during soldering process

Engineering Contradiction:
Improveelectrical connectionVSAvoidpositioning of terminal part
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The coating layer is formed on the insulating layer before the soldering process, preliminarily establishing a positioning structure that will guide and secure the terminal part during subsequent soldering operations. This preliminary action prevents positioning issues before they occur.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The coating layer acts as an intermediary between the insulating layer and the external environment, providing a surface that facilitates both electrical connection and firm positioning during soldering. It mediates between the need for wire exposure and the need for stable positioning.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the coil undergoes soldering process for electrical connection, then electrical connection is achieved, but the winding turns become loose and relative positions change

Engineering Contradiction:
Improvesoldering processVSAvoidrelative positions of winding turns
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The coating layer is applied to the insulating layer before soldering, preliminarily securing the winding turns in their correct relative positions. This prevents the turns from becoming loose during the soldering process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The coating layer provides beforehand cushioning protection to the winding turns, acting as a stabilizing structure that prevents displacement and loosening during the thermal and mechanical stresses of the soldering process.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Manufacturing precision

If a coating layer is formed to encapsulate the terminal part and winding turns, then positioning stability and structure rigidity are improved, but the complexity of the manufacturing process increases

Engineering Contradiction:
Improvepositioning stabilityVSAvoidmanufacturing process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The coating layer combines multiple functions into a single structure: it provides positioning stability, protects the insulating layer, and maintains the rigidity of the terminal part. This merging reduces the need for separate components and simplifies the overall manufacturing process.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The coating layer serves multiple purposes simultaneously: it acts as a positioning structure, a protective layer, and a rigidity-enhancing element. This multi-functionality reduces the number of separate manufacturing steps and components needed.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11791079B2Coil assembly
Publication Date: 2023.10.17 CYNTEC
  • US11791079B2 patent drawing
  • US11791079B2 patent drawing
  • US11791079B2 patent drawing

AI summary

A coating layer is formed on a coil made of an insulated conductive wire comprising a metal wire and an insulating layer encapsulating the metal layer, wherein the coating layer encapsulates at least one portion of the insulating layer of the insulated conductive wire so that a terminal part of the metal wire exposed from the insulating layer can be positioned firmly while going through an automatic soldering process for electrically connecting with an external circuit.