Speaker Module Vertical Movement for Slim TV Sound Efficiency

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Solution Overview

Problem

Slim TVs with large screens require a design that minimizes the visibility of speaker modules to maintain a neat front, but this often results in decreased sound transfer efficiency due to side-mounted speakers.

Innovation Solution

A sound apparatus with a speaker module that vertically moves and is exposed only when in use, utilizing a mechanism of upper and lower links, hinge gears, and a motor to rotate the speaker module from a rear position to a lower position, allowing it to be exposed forward for optimal sound transfer without the need for additional lateral space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If the speaker module is disposed at the side to maintain a neat front design, then the aesthetic appearance is improved, but the sound transfer efficiency to viewers deteriorates

Engineering Contradiction:
Improvefront design appearanceVSAvoidsound transfer efficiency
Core Design Contradiction:
ShapeVSReliability

Solution Approach 1:

The speaker module is made movable rather than fixed, allowing it to dynamically change position between a retracted state (improving front design appearance) and an extended state (improving sound transfer efficiency). The module can vertically move and rotate to optimize its position based on usage conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Instead of placing the speaker module laterally at the side, the invention utilizes the vertical dimension by allowing the module to move up and down. This vertical movement enables the speaker to be hidden during non-use while still being positioned optimally during use, resolving the contradiction between appearance and performance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If the speaker module is exposed at the front for optimal sound transfer, then the sound transfer efficiency is improved, but the aesthetic appearance of the neat front deteriorates

Engineering Contradiction:
Improvesound transfer efficiencyVSAvoidfront design appearance
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The speaker module transitions from a static to a dynamic configuration, automatically adjusting its position based on operational needs. During non-use, it retracts to maintain aesthetic appearance; during use, it extends to optimize sound transfer, thus resolving the appearance-performance contradiction.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The speaker module is positioned in advance to the optimal location for sound transfer when needed, and retracted to the aesthetic position when not needed. This preliminary positioning action ensures that the system is always in the optimal state for its current operational condition.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If additional lateral space is provided for speaker placement, then the sound transfer efficiency is improved, but the space utilization of the device deteriorates

Engineering Contradiction:
Improvesound transfer efficiencyVSAvoidlateral space requirement
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The invention transitions the speaker module from lateral placement to vertical movement, utilizing the vertical dimension instead of consuming lateral space. This allows optimal sound transfer positioning without increasing the device's lateral footprint, thus resolving the contradiction between sound efficiency and space utilization.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The speaker module uses vertical movement and rotation mechanisms to achieve optimal positioning for sound transfer without requiring additional lateral space. The dynamic adjustment within the existing lateral boundaries resolves the contradiction between needing space for performance and maintaining compact dimensions.

Inventive Principle:
Principle #15Dynamics

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

Enhances design aesthetics by hiding the speaker module when not in use and ensures efficient sound transfer by positioning it forward only during operation, minimizing lateral movement and maintaining space utilization.

Implementation Method 1

a first hinge gear coupled to the other end of each of the upper links and a second hinge gear coupled to the one end of each of the lower links, the first hinge gear and the second hinge gear rotating in engagement with each other during rotation of the upper links and the lower links

Methodology Applied
Scientific EffectGear mechanism: Gear

Implementation Method 2

a damper adjoining at least one end of each of the upper links or the lower links to apply frictional force to reduce a rotational speed of the upper links and the lower links

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS9628882B2Sound apparatus
Publication Date: 2017.04.18 LG ELECTRONICS INC
  • US9628882B2 patent drawing
  • US9628882B2 patent drawing
  • US9628882B2 patent drawing

AI summary

A sound apparatus is disclosed. The sound apparatus includes a body, a bracket coupled to a lower portion of a rear surface of the body, a plurality of upper links, one end of each of the upper links being hinge-coupled to the bracket, a middle frame hinge-coupled to the other end of each of the upper links, a plurality of lower links, one end of each of the lower links being hinge-coupled to the middle frame, and at least one speaker module hinge-coupled to the other end of each of the lower links to vertically move according to rotational movement of the upper links and the lower links, wherein a direction of rotation of the upper link is opposite to a direction of rotation of the lower links, and the middle frame moves in a lateral direction during the rotational movement of the upper links and the lower links.