Hinge Structure Vibration Cancellation via Counteracting Reverse Vibrations

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Solution Overview

Problem

Conventional hinge structures in portable computing devices with touch screens are prone to vibrations when rotating or operating, causing difficulties in user interaction due to inadequate support for forces applied on the touch screen.

Innovation Solution

A hinge structure comprising first, second, and third pivoting members, where the first and second pivoting members have fixing and winding portions that wind around a shaft, with the third pivoting member's shaft located between the fixing portions, generating counteracting reverse vibrations to stabilize the first body during rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional hinge structure is used in portable computing devices with touch screens, then the device can achieve basic rotation function, but the hinge is easily prone to body vibrations when rotating the touch screen or operating the touch screen

Engineering Contradiction:
Improveoperation stabilityVSAvoidbody vibrations
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The hinge structure is divided into multiple pivoting members (first pivoting member, second pivoting member, and third pivoting member) with separate fixing portions and winding portions. This segmentation allows each component to independently manage vibration forces, with the first and second fixing portions generating counteracting reverse vibrations to cancel out harmful body vibrations during rotation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The first and second fixing portions are positioned at opposite sides of the shaft, creating a counterbalance effect. When the first body rotates, these fixing portions generate reverse vibrations that counteract each other, effectively canceling out the harmful vibrations and providing operational stability.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

2Adaptability or versatility

If the bodies are expanded to accommodate touch screen functionality, then the device can provide enhanced user interaction, but the hinge requires additional force support capability to handle touch screen operations

Engineering Contradiction:
Improvetouch screen functionalityVSAvoidforce support capability
Core Design Contradiction:
Adaptability or versatilityVSForce

Solution Approach 1:

The hinge structure serves multiple functions simultaneously: it enables rotation between bodies, supports forces applied during touch screen operation, and actively counteracts vibrations. The first and second pivoting members with their winding portions create a multi-functional system that handles both rotational movement and force support without requiring separate mechanisms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The first and second fixing portions are pre-positioned at opposite sides of the shaft before operation begins. This preliminary arrangement ensures that when rotation or touch operations occur, the counteracting reverse vibrations are already positioned to cancel out harmful forces, providing proactive vibration cancellation rather than reactive correction.

Inventive Principle:
Principle #10Preliminary action

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 hinge structure effectively cancels out vibrations, providing a stable operation interface by counteracting the reverse vibrations generated when the first body rotates relative to the second body, ensuring smooth and comfortable user interaction.

Implementation Method 1

the first winding portion and the second winding portion respectively wind around the shaft, and the first fixing portion and the second fixing portion are located at two opposite sides of the shaft... the first and the second fixing portions located at the two opposite sides of the shaft would both generate corresponding reverse vibrations when the first body rotates in relative to the second body, and with an counteract effect of the corresponding reverse vibrations

Methodology Applied
Scientific EffectVibration cancellation: Damping

Data Source

PatentUS8848354B2Hinge structure and electronic device using the same
Publication Date: 2014.09.30 ACER INC
  • US8848354B2 patent drawing
  • US8848354B2 patent drawing
  • US8848354B2 patent drawing

AI summary

A hinge structure suited for connecting between a first body and a second body is provided, such that the first and the second bodies can rotate in relative to each other. The hinge structure includes a first pivoting member, a second pivoting member, and a third pivoting member. The first pivoting member has a first fixing portion fixed to the first body and a first winding portion extending from the first fixing portion. The second pivoting member has a second fixing portion fixed to the first body and a second winding portion extending from the second fixing portion. The third pivoting member is disposed on the second body and has a shaft. The first winding portion and the second winding portion respectively wind around the shaft. The first fixing portion and the second fixing portion are located at opposite sides of the shaft. An electronic device is also provided.