Inductance Component Impact-Absorption Layer Design

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional inductance components suffer from poor impact resistance due to cracking of the resin-made base material during manufacturing and mounting processes, particularly when subjected to absorption forces or impacts from nozzle-equipped mounting devices.

Innovation Solution

Incorporating impact-absorption layers, formed as air gaps, between the electrodes and the base material, as well as between the coil and the base material, to enhance flexibility and absorb potential impacts, with a preferred thickness range of 10 nm to 2 μm and optional sealing with a silicone resin stopper layer to prevent moisture ingress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the base material is made rigid to maintain structural integrity, then the component strength is improved, but the impact resistance deteriorates due to cracking under mounting forces

Engineering Contradiction:
Improvestructural integrityVSAvoidimpact resistance
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent divides the base material into multiple layers with different properties: a rigid lower base material layer providing structural support, and a flexible upper base material layer providing impact absorption. This segmentation allows each layer to fulfill its specific function, resolving the contradiction between structural integrity and impact resistance

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses composite material structure combining rigid and flexible base material layers. The lower layer uses rigid material for structural integrity while the upper layer uses flexible material for impact absorption, creating a composite structure that simultaneously achieves both strength and impact resistance

Inventive Principle:
Principle #40Composite materials

2Reliability

If the base material is made flexible to improve impact resistance, then the impact resistance is improved, but the structural integrity deteriorates

Engineering Contradiction:
Improveimpact resistanceVSAvoidstructural integrity
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The patent segments the base material into functional layers: the lower rigid layer maintains structural integrity while the upper flexible layer provides impact resistance. This functional segmentation resolves the contradiction by assigning different mechanical properties to different layers based on their specific requirements

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by giving different mechanical properties to different regions/layers of the base material. The lower layer has rigid properties for structural support while the upper layer has flexible properties for impact absorption, allowing each region to have the quality needed for its specific function

Inventive Principle:
Principle #3Local quality

3Strength

If the base material thickness is increased to improve structural integrity, then the strength is improved, but the manufacturing precision deteriorates due to cracking during mounting

Engineering Contradiction:
Improvestructural integrityVSAvoidcrack-free mounting
Core Design Contradiction:
StrengthVSManufacturing precision

Solution Approach 1:

The patent segments the thick base material into multiple thinner layers with different properties. The lower rigid layer provides structural integrity while the upper flexible layer absorbs mounting impacts, preventing cracks. This segmentation allows achieving structural integrity without the manufacturing precision deterioration that would occur with a single thick rigid layer

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent incorporates a flexible upper base material layer that acts as a cushion before mounting operations. This layer absorbs impact forces during mounting, preventing cracks in the lower rigid layer, thereby ensuring crack-free mounting while maintaining structural integrity

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

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

The solution significantly improves the impact resistance of the inductance component by allowing the base material to absorb forces and minimize cracking, ensuring the component's structural integrity and functionality in electronic equipment like mobile phones.

Implementation Method 1

an impact-absorption layer is disposed between the electrode and the base material. Forming the impact-absorption layer between the base material and the electrode allows the base material to have flexibility even if an impact is given on the base material

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS7663464B2Inductance component
Publication Date: 2010.02.16 PANASONIC HOLDINGS CORP
  • US7663464B2 patent drawing
  • US7663464B2 patent drawing
  • US7663464B2 patent drawing

AI summary

The inductance component has a base material, a coil formed in the base material and an electrode electrically connected to the coil. In addition, an impact-absorption layer is disposed between the electrode and the base material. Forming impact-absorption layer between the base material and the electrode allows the base material to have flexibility even if an impact is given on the base material, providing the component with high impact-resistance.