Portable Terminal Stand Accessory With Elastic Tube Angle Locking

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Solution Overview

Problem

Existing accessory devices for portable terminals struggle to maintain a stable angle for media viewing while allowing easy portability and non-interference with charging, particularly as terminals become slimmed and lightweighted.

Innovation Solution

An accessory device featuring a body with legs and an elastic tube that transitions between contraction and stand-up positions via applied forces, utilizing elastic forces to fix the position without full contraction or extension, and includes detachable mounting surfaces to avoid interference with charging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the accessory device is designed to maintain a stable angle for media viewing, then the viewing stability is improved, but the device becomes bulkier and less portable

Engineering Contradiction:

Improveviewing stabilityVSAvoiddevice volume

Core Design Contradiction:

Stability of the object's compositionVSVolume of moving object

Solution Approach 1:

The accessory device is divided into multiple legs that can independently adjust their positions. The legs are segmented with joints that allow individual adjustment, enabling the device to maintain viewing stability while keeping each segment compact and collapsible for portability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The accessory device transitions from a static structure to a dynamic one where the legs can move between extended and retracted positions. The joints and elastic components enable the legs to dynamically adjust angles and positions, providing viewing stability when needed and compact form when portable.

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If the accessory device is designed to maintain a stable angle for media viewing, then the viewing stability is improved, but the device becomes heavier

Engineering Contradiction:

Improveviewing stabilityVSAvoiddevice weight

Core Design Contradiction:

Stability of the object's compositionVSWeight of moving object

Solution Approach 1:

The accessory device uses thin, flexible leg structures with elastic components instead of heavy rigid materials. The legs are designed as slender elements that can bend and flex, providing the necessary structural support for viewing stability while minimizing weight through their thin-profile construction.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The device replaces heavy mechanical locking mechanisms with elastic forces and friction-based joint designs. The elastic components store and release energy to maintain leg positions, eliminating the need for heavy motors, batteries, and complex locking systems while achieving stable angle maintenance.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Stability of the object's composition

If the accessory device uses a fixed mounting structure, then the mounting stability is improved, but it interferes with charging operations

Engineering Contradiction:

Improvemounting stabilityVSAvoidcharging compatibility

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The mounting structure transitions from fixed to dynamic, allowing the legs to adjust their positions and angles. This adaptability enables the device to maintain stable mounting on various surfaces while accommodating different charging configurations, as the legs can be positioned to avoid interference with charging ports and cables.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The accessory device is designed with universal mounting capabilities that work with various surface types and charging configurations. The adjustable legs can be positioned to accommodate different device orientations and charging cable placements, providing both mounting stability and charging compatibility across multiple use scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enables easy one-handed switching between contraction and stand-up positions, maintaining a stable angle for media viewing without interfering with portability or charging.

Implementation Method 1

an elastic tube positioned to surround the body... maintained in the contraction position by a first force pressing the body in the longitudinal axis direction... maintained in the stand-up position by a second force in a direction opposite to the first force

Methodology Applied

Scientific EffectElastic force: Elasticity

Data Source

PatentEP4443856B1Accessory device for portable terminal

Publication Date: 2026.03.11 LEE JONG SU

Figure 1A
Figure 1B~1D
Figure 2~3

AI summary

The present disclosure provides an accessory device for portable terminal, comprising: a body including a plurality of legs; an elastic tube positioned to surround the body; a first plate coupled to a central portion of the body; and a second plate coupled to end portions of the legs distal from the central portion. The body of the accessory device for portable terminal is configured to be positioned in a contraction position or a stand-up position by deforming the elastic tube in a transverse axis direction according to a force applied in a longitudinal axis direction of the body in a state in which the elastic tube is placed.