Reinforced Lens Driving Structure for Impact-Stable Camera Modules

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Solution Overview

Problem

Camera module driving devices are prone to separation and component damage due to external impacts or vibrations, particularly affecting the driving magnet, which is easily detached from the lens barrel and housing.

Innovation Solution

A camera module design incorporating a reinforcing member integrated with the lens barrel and movable frame, featuring protrusions and a body portion to support the driving magnet, enhancing rigidity and preventing separation and damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the driving magnet is attached to the lens barrel and housing without reinforcement, then the device complexity is reduced, but the driving magnet is easily separated or components are damaged due to external impacts or vibrations

Engineering Contradiction:

Improvestructure complexityVSAvoiddriving magnet attachment stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The reinforcing member is divided into multiple functional segments: a body portion for primary support, a first protrusion extending toward the driving coil for additional anchoring, and a second protrusion extending in the opposite direction for balanced reinforcement. This segmentation allows each part to perform its specific function while collectively providing comprehensive protection against separation and damage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first protrusion and second protrusion are designed with different extension lengths, creating an asymmetric structure. The first protrusion extends longer toward the driving coil to provide enhanced anchoring in the direction of magnetic interaction, while the second protrusion provides balanced counterweight and structural support in the opposite direction, optimizing both attachment stability and center of gravity.

Inventive Principle:

Principle #4Asymmetry

2Strength

If the lens barrel and housing collide due to external impacts, then the structural integrity is tested, but the driving magnet separates or components are damaged

Engineering Contradiction:

Improvestructural integrityVSAvoidcomponent durability

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The reinforcing member is pre-installed and integrated with the lens barrel before external impacts occur. The protrusions are positioned in advance to engage with corresponding structures on the housing and driving coil, creating a pre-established protective framework that actively prevents separation and damage when impacts occur.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The reinforcing member acts as a preventive cushioning structure by distributing impact forces across multiple contact points (body portion, first protrusion, second protrusion) before they can concentrate on the driving magnet or cause component separation. This beforehand reinforcement protects against both collision and vibration-induced damage.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If the reinforcing member includes protrusions extending in opposite directions, then the driving magnet support is enhanced, but the manufacturing complexity increases

Engineering Contradiction:

Improvedriving magnet support stabilityVSAvoidreinforcing member fabrication

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The body portion, first protrusion, and second protrusion are merged into a single integrated reinforcing member structure. This unified design allows the entire component to be manufactured as one piece using processes like injection molding or CNC machining, avoiding the need for separate assembly steps while providing comprehensive support stability through the combined geometry of all three elements.

Inventive Principle:

Principle #5Merging (Combining)

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 reinforcing member significantly reduces the separation of the driving magnet and minimizes damage to internal components by improving the rigidity of the lens barrel and movable frame, ensuring stable operation under external impacts and vibrations.

Implementation Method 1

The driving device of the camera module may include a driving magnet and a driving coil. The driving magnet and the driving coil may be disposed to oppose a lens barrel and a housing, respectively, and may provide a driving force necessary to drive the lens barrel.

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

Methodology Applied

Scientific EffectMechanical reinforcement:

Data Source

PatentUS12474624B2Camera module with reinforced lens driving device

Publication Date: 2025.11.18 SAMSUNG ELECTRO MECHANICS CO LTD

AI summary

A camera module is provided. The camera module includes a lens barrel configured to accommodate a lens; a barrel holder coupled to the lens barrel; a driving device configured to drive the barrel holder; and a first reinforcing member integrated with the barrel holder, and configured to support a driving magnet of the driving device, wherein the first reinforcing member includes a body portion disposed to oppose the driving magnet and extending in a length direction of the driving magnet; a first protrusion which extends from a first end of the body portion in a direction opposing a driving coil of the driving device; and a second protrusion which extends from a second end of the body portion in a direction opposite to an extending direction of the first protrusion.