Magnetic Speaker Fixation for Thin Display Stability
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Solution Overview
Problem
Thin display devices face challenges in securely fixing speakers due to reduced thickness, leading to potential contact with the display unit and increased vibration, which affects the speaker's stability and noise generation.
Innovation Solution
A speaker configuration for display devices that includes a speaker main body attached to a first cover member, a second cover member, a retaining member, and a magnet, where the magnet is attached to the first cover member's outer surface to fix the speaker to the rear housing, reducing the number of screw fixing points and enhancing stability through magnetic and fastening member attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the thickness of the display device is reduced, then the device becomes thinner and more compact, but the screw tips contact the display unit causing the speaker to become unstable and generate noise
Solution Approach 1:
The patent replaces the traditional mechanical screw fixation system with a magnetic field-based fixation system. The magnet generates a magnetic field that attracts the speaker frame to the rear housing, eliminating the need for screws and avoiding contact with the display unit. This substitution maintains speaker stability while enabling thinner device design.
Solution Approach 2:
The patent changes the fixation mechanism from mechanical (screws) to magnetic (magnetic field strength). By adjusting the magnetic field parameters (magnet strength, positioning), the speaker can be firmly fixed without requiring deep penetration into the device structure, thus allowing reduced thickness while maintaining reliability.
2Device complexity
If the number of screw fixing points is reduced, then the device structure becomes simpler, but the speaker fixation force is reduced causing vibration and noise
Solution Approach 1:
The patent replaces multiple mechanical screw fixing points with a single magnetic field-based fixation system. The magnet provides distributed magnetic force across the speaker frame, achieving reliable fixation with fewer components. This reduces device complexity while maintaining or even improving fixation force through the uniform magnetic field distribution.
Solution Approach 2:
The magnet serves multiple functions simultaneously: it provides the primary fixation force, distributes stress across the speaker frame, and eliminates the need for separate screw fasteners. This multi-functionality achieves reliable speaker fixation while reducing the overall number of fixing points and simplifying the device structure.
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
This configuration reduces the number of screw fixing points, suppresses vibration-induced noise, and improves the speaker's strength against external forces, ensuring firm fixation and reduced noise generation in thin display devices.
Implementation Method 1
a magnet attached to an outer surface of the first cover member and fixing the speaker main body to the rear housing
Data Source
AI summary
A display device comprises a display unit having a display surface, a light source that irradiates light onto the display unit, a rear housing attached to an opposite side of the display unit from the display surface, a rear cover that covers a part of the rear housing, and a speaker attached to the rear housing. The speaker includes a speaker main body, a first cover member to which the speaker main body is attached and having an outer surface facing the rear housing, a second cover member disposed so as to face the first cover member across the speaker main body, a retaining member disposed between the speaker main body and the first cover member and fixed to the rear housing by a fastening member, and a magnet attached to the outer surface of the first cover member and fixing the speaker main body to the rear housing.