Magnetic Moving Structure for Mobile Functional Module

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Solution Overview

Problem

Existing functional modules in mobile devices face difficulties in moving normally over time due to mechanical wear and non-uniform spring forces in PUSH-PUSH structures, making it challenging to arrange and use them outside the terminal effectively.

Innovation Solution

A magnetic moving structure comprising a fixed part, a moving part, and magnetic components, including an electromagnet and a permanent magnet, which allows the functional module to move along a specified trajectory using magnetic forces, ensuring stable operation over time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a PUSH-PUSH structure with spring and mechanical components is used to move the functional module, then the functional module can be moved between inside and outside the terminal, but the spring force changes with service time causing the functional module to become difficult to move normally

Engineering Contradiction:

Improvefunctional module mobilityVSAvoidmoving mechanism reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces the mechanical spring-based PUSH-PUSH structure with an electromagnetic driving system. The electromagnetic driving component generates magnetic fields to drive the movable component along the moving trajectory, eliminating the need for mechanical springs and their associated wear and force degradation problems over time.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental operating parameter from mechanical elastic force (spring) to electromagnetic force. By using electromagnetic fields whose strength can be controlled through current parameters, the system maintains consistent driving force without the degradation inherent in mechanical spring systems.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If mechanical structures and springs are used in the moving mechanism, then the functional module can be actuated, but mechanical wear occurs making the functional module difficult to move after prolonged use

Engineering Contradiction:

Improvefunctional module actuationVSAvoidmechanical wear

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent eliminates mechanical contact and wear by substituting the electromagnetic driving component and magnetic components for the mechanical spring and structure. The electromagnetic field acts on the movable component without physical contact, preventing wear accumulation over time.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces magnetic fields as an intermediary between the driving mechanism and the movable component. This field-based interaction replaces direct mechanical contact, allowing force transmission without the wear that occurs in mechanical systems.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the functional module is arranged outside the terminal, then it is more accessible to the user, but it becomes difficult to maintain stable movement over time with mechanical structures

Engineering Contradiction:

Improveuser accessibilityVSAvoidmovement stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent replaces the unstable mechanical spring system with an electromagnetic system that can maintain consistent force output. The electromagnetic driving component can be precisely controlled to provide stable driving force for the movable component throughout its service life, ensuring reliable operation when the functional module is positioned outside the terminal.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 magnetic moving structure enables the functional module to move reliably and efficiently between inside and outside the terminal, maintaining normal functionality even after prolonged use by utilizing magnetic attraction and repulsion forces.

Implementation Method 1

providing a current in a first current direction for an electromagnet to move a moving part along one direction of a specified trajectory through a magnetic force between the electromagnet and a magnet

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

a magnetic force between the electromagnet and a magnet

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentEP3594777B1Functional component, method for controlling functional component, and terminal

Publication Date: 2022.02.09 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

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AI summary

Aspects of the disclosure provide apparatuses, methods for controlling the apparatuses, and terminal devices containing the apparatuses in the field of mobile solutions. In an example, an apparatus includes a magnetic moving structure (11) and a functional module (12). The magnetic moving structure (11) has a fixed part (111), a moving part (112) configured to be movable along a specified trajectory (t) of the fixed part (11), and a magnetic part (113). The functional module (12) is connected with the moving part (112) and is configured to move with the moving part (112). The magnetic part (113) includes a first magnet (m1) located on the fixed part (111) and a second magnet (m2) located on the moving part (112) and the magnetic part (113) is configured to generate a magnetic force to move the moving part (112) along the specified trajectory (t).