Camera Shutter Magnetic Actuation Wear Reduction

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Solution Overview

Problem

Current camera shutters in portable electronic devices face issues with wear and jamming due to manual control mechanisms, making them difficult to use accurately and reliably for exposing and shielding the camera.

Innovation Solution

A camera shutter design utilizing a winding assembly and magnetic attraction to automatically control the movement of a movable cover, which shields or exposes the camera, reducing friction and wear by using a magnetic conductive sheet and magnet for precise positioning and movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual control mechanism is used for camera shutter, then ease of operation is improved, but reliability deteriorates due to wear and jamming between components

Engineering Contradiction:

Improvemanual controlVSAvoidwear and jamming

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the manual mechanical control system with an automatic control system using a magnetic field generating device. The controller automatically controls the magnetic field generating device to generate a magnetic field that drives the movable cover, eliminating the need for manual mechanical operation and thereby solving the wear and jamming problems between manual control components.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the controller and the movable cover. The magnetic field generating device generates a magnetic field that interacts with the magnetic component on the movable cover, enabling contactless actuation and eliminating direct mechanical contact between components, thus preventing wear and jamming.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If manual control mechanism is used for camera shutter, then device complexity is reduced, but reliability deteriorates due to wear between components

Engineering Contradiction:

Improvestructural designVSAvoidadhesion and jamming

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The controller automatically controls the magnetic field generating device based on shooting parameters, enabling the system to self-regulate the opening and closing of the movable cover without manual intervention. This automatic self-service mechanism eliminates the need for manual operation components and their associated wear issues.

Inventive Principle:

Principle #25Self-service

3Reliability

If magnetic field generating device is used for automatic control, then reliability is improved by reducing wear, but device complexity increases

Engineering Contradiction:

Improvewear reductionVSAvoidassembly structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the magnetic field generating device and the magnetic component into a coordinated electromagnetic actuation system. The magnetic field generating device and the movable cover with magnetic component work together as an integrated system, allowing automatic control while maintaining structural compactness. This merging approach manages the complexity by creating a unified electromagnetic actuation mechanism rather than separate complex mechanical assemblies.

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 solution enables reliable and accurate automatic control of camera exposure and shielding, simplifying the assembly structure and reducing wear between components, thus addressing the limitations of manual control mechanisms.

Implementation Method 1

the winding assembly is capable of driving the magnet to move the movable cover along a first direction while a first current passes through the winding assembly to form a first magnetic field

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

a magnet disposed on the magnetic side of the movable cover and is located on the first surface of the movable cover; the winding assembly is capable of driving the magnet to move the movable cover

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS11619862B2Camera shutter

Publication Date: 2023.04.04 LANTO ELECTRONIC LIMITED

AI summary

A camera shutter for exposing or shielding a camera including a supporting portion, a winding assembly, a movable cover, and a magnet is provided. The winding assembly is capable of driving the magnet to move the movable cover along a first direction while a first current passes through the winding assembly to form a first magnetic field, and to make the shielding side of the movable cover shield the camera. The winding assembly is also capable of driving the magnet to move the movable cover along a second direction while a second current passes through the winding assembly to form a second magnetic field, and to make the shielding side of the movable cover away from the camera to expose the camera.