Wood Capacitive Touch Panel for Durable Musical Toys

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Solution Overview

Problem

Existing interactive children's toys with capacitive touch sensing technologies face challenges in providing durable, easy-to-clean, and sensitive user input surfaces that effectively simulate musical instruments while preventing debris accumulation and interference with internal electronics.

Innovation Solution

The integration of a capacitive touch sensor system within a user interface panel made from natural or synthetic wood, with a seamless exterior surface and varying thickness for improved sensitivity and durability, sandwiched between a base housing and an electronic input-output control system, allowing for capacitive touch inputs to generate distinct sound outputs and interactive features.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional electronic instrument structure with separate sensor layer and art layer is used, then the capacitive touch sensing function is achieved, but the durability and ease of cleaning are compromised due to gaps and crevices that accumulate debris

Engineering Contradiction:

ImprovedurabilityVSAvoiddebris accumulation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent merges the sensor layer and art layer into a single integrated user interface panel with a seamless exterior surface. The capacitive touch sensors are incorporated directly into the panel structure, eliminating gaps and crevices between separate layers. This integration prevents debris accumulation while maintaining capacitive touch functionality, as the seamless surface can be easily cleaned and does not trap particles.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The user interface panel employs a thin film structure that provides a seamless exterior surface while incorporating capacitive touch sensors within the panel thickness. This thin film approach maintains the protective barrier function while enabling touch sensitivity through the surface, preventing debris accumulation in gaps while preserving the capacitive sensing capability.

Inventive Principle:

Principle #30Flexible shells and thin films

2Measurement precision

If the user interface panel is made thin for improved capacitive touch sensitivity, then the touch sensitivity is enhanced, but the structural strength and durability are reduced

Engineering Contradiction:

Improvetouch sensitivityVSAvoidstructural strength

Core Design Contradiction:

Measurement precisionVSStrength

Solution Approach 1:

The user interface panel utilizes composite material construction that combines materials with different properties to achieve both thinness for sensitivity and strength for durability. The composite structure allows the panel to be thin enough for capacitive touch sensitivity while maintaining sufficient structural strength through the synergistic properties of the combined materials.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The panel employs local quality variations in thickness and material properties, with thinner regions over the capacitive sensor areas for maximum touch sensitivity and thicker or reinforced regions at edges and non-sensitive areas for structural strength. This localized differentiation allows the panel to be thin where needed for sensitivity while maintaining overall structural integrity.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If a seamless exterior surface is used to prevent debris accumulation, then ease of cleaning is improved, but the ability to provide distinct tactile feedback for different input areas is reduced

Engineering Contradiction:

Improveease of cleaningVSAvoidtactile feedback differentiation

Core Design Contradiction:

Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The seamless user interface panel incorporates visual differentiation through color changes or color-coded regions that correspond to different functional input areas. This visual feedback system allows children to easily distinguish between different input zones (such as different drum pads or keyboard keys) without requiring tactile or textural variations, maintaining the seamless easy-to-clean surface while providing clear area differentiation.

Inventive Principle:

Principle #32Color changes

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

This solution provides a durable, easy-to-clean, and sensitive user input surface that effectively simulates musical instruments, preventing debris accumulation and enhancing the interactive experience by generating distinct sound outputs and interactive features through capacitive touch inputs.

Implementation Method 1

the sensor layer generates a sensor signal based on and responsive to user input contact with the user interface panel

Methodology Applied

Scientific EffectCapacitance: Capacitance

Implementation Method 2

The electronic control system processes the sensor signal and generates sound output in response to detected user input

Methodology Applied

Scientific EffectElectroacoustic conversion:

Data Source

PatentEP3848103B1Children's toys with capacitive touch interactivity

Publication Date: 2022.12.07 KIDS II HAPE JOINT VENTURE LTD

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AI summary

A children's toy with capacitive touch interactivity. The children's toy generally includes a user input overlay panel and one or more capacitive touch sensors. The overlay panel may be formed from a capacitive touch conductive natural organic material such as wood. The toy can be shaped and ornamented to resemble a musical instrument, and configured to play music in response to user input applied to the user input overlay panel and sensed by the capacitive touch sensors.