Ultrasonic Resonance Frequency Adjustment Without Product Disassembly

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Solution Overview

Problem

Ultrasonic transducers in medical and beauty devices experience resonance frequency fluctuations, leading to reduced output efficiency, excessive current, and heat generation, requiring costly and time-consuming disassembly for adjustment.

Innovation Solution

A device and method that allow for adjusting the resonance frequency of ultrasonic transducers without disassembly, using a circuit board with a frequency adjustor and switches to input offset values, generating a new resonance frequency through PWM signals and analog voltage conversion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an expert disassembles the product to adjust resonance frequency by manipulating internal circuits, then the resonance frequency can be readjusted, but unnecessary time and costs are incurred and product reliability may be adversely affected

Engineering Contradiction:

Improveproduct reliabilityVSAvoidfrequency adjustment operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

A frequency adjustor is introduced as an intermediary component that connects to the circuit board through a connector. This adjustor includes adjustment switches that can be operated from the external side of the housing, eliminating the need to disassemble the product while still enabling frequency adjustment through electrical connection to the internal circuit.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The manual manipulation of internal circuits (mechanical disassembly and circuit manipulation) is replaced with an electrical switching system. The frequency adjustor uses adjustment switches that electrically connect to the circuit board through the connector, substituting mechanical disassembly operations with electrical switching operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If the resonance frequency of an ultrasonic transducer fluctuates and does not match with the resonance frequency of an electronic circuit, then output efficiency is lowered and excessive current is input, but adjusting the frequency requires product disassembly

Engineering Contradiction:

Improveoutput efficiencyVSAvoidadjustment system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The frequency adjustor serves multiple functions: it provides frequency adjustment capability, includes protection against excessive current through the circuit board design, and can be operated from the external side. The connector design allows the same component to serve both internal circuit connection and external adjustment purposes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The frequency adjustor acts as a mediator between the external user and the internal circuit board, enabling frequency adjustment without direct manipulation of internal circuits. The connector serves as the intermediary interface that maintains electrical connection while allowing external access.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If resonance frequency adjustment is performed by manipulating internal circuits of a disassembled product, then frequency can be readjusted, but unnecessary time and costs are incurred

Engineering Contradiction:

Improvefrequency adjustment precisionVSAvoidadjustment time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The frequency adjustment capability is built into the product design from the beginning, with the frequency adjustor and connector pre-installed. This preliminary preparation allows users to perform frequency adjustments at any time without disassembly, eliminating the need for time-consuming service center visits for frequency readjustment.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The connector and frequency adjustor serve as intermediaries that provide direct access to the circuit board's frequency adjustment functions. This intermediary system eliminates the time loss associated with product disassembly and reassembly by providing external access to internal circuit functions.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enables efficient and cost-effective adjustment of resonance frequencies, reducing time and potential damage to products, while maintaining reliability and improving productivity.

Implementation Method 1

a piezoelectric element (303) mounted on the distal end of the shaft (301) and configured to generate ultrasonic vibration

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

ultrasonic transducers of medical devices and beauty devices that use the effect of vibration stimulation of ultrasonic waves

Methodology Applied

Scientific EffectUltrasonic vibration: Ultrasonic Vibration

Data Source

PatentUS12113534B2Device for adjusting ultrasonic resonance frequency and method of controlling the same

Publication Date: 2024.10.08 KIM KWANG HEE

AI summary

Provided are a device for adjusting an ultrasonic resonance frequency and a method of controlling the same. A device according to an embodiment of the present disclosure includes a circuit board configured to determine and output a resonance frequency. In addition, the device includes a frequency adjustor connected to at least one of a plurality of circuits mounted on the circuit board.