Electromagnetic Driving Module Vibration Damping via Localized Glue

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Solution Overview

Problem

Existing driving modules in camera devices experience instability and reliability issues due to the fracturing of energy-absorbing glue under vibration, leading to degraded image quality.

Innovation Solution

An electromagnetic driving module with a movable member, stationary member, and suspension member, where the energy-absorbing glue is strategically applied between the suspension member and the movable member, including flanges and notches to enhance adhesion and prevent detachment, using a viscoelastic material like silicon-based mixtures to improve stability and damping.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If energy-absorbing glue is applied between the movable member and stationary member to improve stability, then the reliability of the driving module is improved, but under vibration the drawing force fractures the glue causing image quality to degrade

Engineering Contradiction:

Improvestability of driving moduleVSAvoidadhesion strength of energy-absorbing glue

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent applies energy-absorbing glue specifically at the suspension member connection points rather than uniformly across the entire movable member-stationary member interface. This localized application concentrates the adhesive strength where it is most needed to resist vibration-induced drawing forces while maintaining overall module stability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses a composite structure combining the suspension member with the movable member through energy-absorbing glue, creating a hybrid connection that leverages both mechanical suspension and chemical adhesion to resist vibration forces more effectively than either method alone.

Inventive Principle:

Principle #40Composite materials

2Stability of the object's composition

If the suspension member is connected to the movable member with energy-absorbing glue to reduce resonance, then the stability is improved, but the glue may detach under vibration causing reliability to worsen

Engineering Contradiction:

Improveresonance reductionVSAvoidconnection reliability under vibration

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The energy-absorbing glue acts as a pre-applied cushioning layer between the suspension member and movable member, designed to absorb and dissipate vibration energy before it can cause detachment or resonance amplification. This proactive energy absorption prevents the harmful effects of vibration.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent changes the physical-chemical parameters of the connection interface by using energy-absorbing glue with specific viscoelastic properties, allowing the connection to dynamically adjust its stiffness and damping characteristics in response to vibration frequencies, thereby maintaining reliability across different operating conditions.

Inventive Principle:

Principle #35Parameter 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

The solution provides enhanced stability and reliability of the driving module, reducing resonance and preventing glue detachment, thereby maintaining image quality even under vibration.

Implementation Method 1

a segment of the suspension member is covered in the energy-absorbing glue, and the energy-absorbing glue connects the suspension member to the movable member

Methodology Applied

Scientific EffectVibration damping: Damping

Implementation Method 2

using a viscoelastic material like silicon-based mixtures to improve stability and damping

Methodology Applied

Scientific EffectViscoelasticity: Viscoelasticity

Implementation Method 3

an electromagnetic driving module which converts electrical energy into mechanical energy

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Data Source

PatentUS10254505B2Electromagnetic driving module and camera device using the same

Publication Date: 2019.04.09 ACTUTEK CORP

AI summary

An electromagnetic driving device is provided, which includes a movable member, a stationary member, a suspension member, and an energy-absorbing glue. The movable member and the stationary member are arranged along a main axis. The suspension member extends along a direction parallel to the main axis, and the two ends thereof are respectively connected to the movable member and the stationary member so as to enable the movable member to be suspended over the stationary member. A segment of the suspension member is covered in the energy-absorbing glue, and the energy-absorbing glue connects the suspension member to the movable member.