Magnetic Ejection System for Mobile Terminal Stopper

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Solution Overview

Problem

Existing stopper ejection systems for mobile terminals are either aesthetically unpleasing due to large fasteners, prone to damage, or require auxiliary tools, making manual extraction difficult and inconvenient.

Innovation Solution

Incorporation of a magnetic module within a U-shaped bracket that controls the stopper body's ejection using magnetism, eliminating the need for fasteners and auxiliary tools, and enabling automatic and simple operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a fastener is used for manual opening of the stopper, then the stopper can be extracted, but the fastener becomes large in size and inaesthetic, and frequent opening may easily damage the fastener

Engineering Contradiction:
Improvemanual opening convenienceVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The patent replaces the mechanical fastener system with a magnetic field-based ejection system. The magnetic module generates magnetic force to automatically eject the stopper body, eliminating the need for manual fastener operation and large opening mechanisms, thereby improving aesthetic appearance while maintaining ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The stopper ejection system operates automatically through magnetic force generation when electrical signal is applied, without requiring manual manipulation of fasteners or other mechanical components. The system serves itself by converting electrical energy to magnetic force for automatic ejection.

Inventive Principle:
Principle #25Self-service

2Ease of operation

If a fastener is used for manual opening of the stopper, then the stopper can be extracted, but frequent opening may easily damage the fastener to make it impossible to continue extracting the stopper

Engineering Contradiction:
Improverepeated extraction capabilityVSAvoidfastener durability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent replaces the mechanical fastener system with a magnetic field-based ejection system. The magnetic module generates magnetic force to automatically eject the stopper body, eliminating the need for manual fastener operation and large opening mechanisms, thereby improving aesthetic appearance while maintaining ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The stopper ejection system operates automatically through magnetic force generation when electrical signal is applied, without requiring manual manipulation of fasteners or other mechanical components. The system serves itself by converting electrical energy to magnetic force for automatic ejection.

Inventive Principle:
Principle #25Self-service

3Extent of automation

If a pin-poking stopper is used, then the stopper can be ejected by pushing and pressing, but an auxiliary tool such as a pin is required and operation becomes difficult

Engineering Contradiction:
Improveautomatic ejection capabilityVSAvoidoperation simplicity
Core Design Contradiction:
Extent of automationVSEase of operation

Solution Approach 1:

The patent replaces manual mechanical ejection methods with an electromagnetic ejection system. The magnetic module generates magnetic force to automatically eject the stopper body when electrical signal is applied, eliminating the need for auxiliary tools like pins and simplifying operation to just activating the electrical signal.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The stopper ejection system operates automatically through magnetic force generation when electrical signal is applied, without requiring manual manipulation of fasteners or other mechanical components. The system serves itself by converting electrical energy to magnetic force for automatic ejection.

Inventive Principle:
Principle #25Self-service

4Extent of automation

If a pin-poking stopper is used, then the stopper can be ejected by pushing and pressing, but the stopper may not be extracted because an auxiliary tool is not carried

Engineering Contradiction:
Improveautomatic ejection capabilityVSAvoidindependence from auxiliary tools
Core Design Contradiction:
Extent of automationVSAdaptability or versatility

Solution Approach 1:

The patent replaces manual mechanical ejection methods with an electromagnetic ejection system. The magnetic module generates magnetic force to automatically eject the stopper body when electrical signal is applied, eliminating the need for auxiliary tools like pins and simplifying operation to just activating the electrical signal.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The stopper ejection system operates automatically through magnetic force generation when electrical signal is applied, without requiring manual manipulation of fasteners or other mechanical components. The system serves itself by converting electrical energy to magnetic force for automatic ejection.

Inventive Principle:
Principle #25Self-service

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 module allows for automatic and aesthetically enhanced stopper ejection, providing a new user experience by simplifying the extraction process and preventing damage to the mobile terminal.

Implementation Method 1

a magnetic module (4) arranged at the same horizontal line with the limiting lug boss (101)... The magnetic field formed after energization and a magnetic field of the limiting lug boss (101) are mutually attracted to separate the limiting lug boss (101) from the limiting groove (201)

Methodology Applied
Scientific EffectMagnetism: Magnetism

Data Source

PatentEP3197134B1Mobile terminal stopper ejection system, mobile terminal and mobile terminal stopper ejection method
Publication Date: 2020.05.06 ZTE CORP
  • EP3197134B1 patent drawingFigure 1~2
  • EP3197134B1 patent drawingFigure 3~4

AI summary

A mobile terminal stopper ejection system is described, and includes a bracket and a stopper body which may be placed in the bracket, wherein a limiting lug boss is arranged on an inner side of a sidewall of the bracket, the limiting lug boss is partially or totally a magnetic substance, the stopper body is provided with an accommodation space, a limiting groove corresponding to the limiting lug boss is formed in an outer wall of the stopper body, the stopper body is fixed in the bracket by clamping between the limiting lug boss and the limiting groove, an ejecting spring is arranged between the stopper body and the bracket, the ejecting spring is arranged to eject the stopper body, the system further includes a magnetic module, and the magnetic module is an electromagnetic module, and attracts the limiting lug boss to be separated from the limiting groove when being energized. The system for ejecting the stopper of the mobile terminal implements automatic ejecting of the stopper of the mobile terminal.