Panel Speaker Vibration Actuator Fixation via Resin Screw Mediator
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Solution Overview
Problem
Conventional panel speakers with vibration actuators attached using metal screws experience insufficient vibration due to inadequate fixation configurations.
Innovation Solution
A panel speaker design that includes a vibration actuator with first and second surfaces, a bracket between the actuator and the panel, a spacer adjacent to the actuator's second surface, and a screw passing through the spacer, bracket, and actuator to securely fasten them to the panel, ensuring even vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the vibration actuator is firmly fixed to the display panel using a metal screw, then the fixation strength is improved, but the vibration efficiency deteriorates
Solution Approach 1:
The patent introduces a resin screw as an intermediary component between the metal screw and the display panel. The resin screw acts as a mediator that transmits vibration more effectively while still providing adequate fixation strength. The resin material has better vibration transmission properties compared to direct metal-to-glass contact, thus resolving the contradiction between fixation strength and vibration efficiency.
Solution Approach 2:
The patent changes the material parameter of the screw from metal to resin. This material parameter change allows the screw to maintain fixation strength while improving vibration transmission. The resin material has different mechanical properties (lower density, better damping characteristics) that enable it to transmit vibrations more effectively to the display panel compared to traditional metal screws.
2Device complexity
If the vibration actuator is fixed directly to the panel, then the device complexity is reduced, but the vibration distribution becomes insufficient
Solution Approach 1:
The resin screw serves as a mediator that improves vibration distribution across the display panel. By distributing the vibration force through its material properties and contact area, it ensures more uniform vibration transmission compared to direct point-contact fixation, while adding minimal structural complexity.
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 enhances the vibration efficiency of the panel speaker, allowing for effective sound wave output by ensuring proper fixation and even vibration distribution across the panel.
Implementation Method 1
a vibration actuator that vibrates the panel, the vibration actuator having first and second oppositely-facing surfaces
Data Source
AI summary
A panel speaker includes: a panel; a vibration actuator that vibrates the panel, the vibration actuator having first and second oppositely-facing surfaces, the first surface facing the panel; a bracket that is located between the first surface of the vibration actuator and the panel; a spacer that is located adjacent to the second surface of the vibration actuator, the spacer occupying a first area that is encompassed by a second area occupied by the bracket when the panel speaker is viewed in a direction that is perpendicular to a plane of the second surface; and a screw that passes through the spacer, the vibration actuator, and the bracket to fasten the spacer, the vibration actuator, and the bracket to the panel. The vibration actuator, disposed between the bracket and the spacer, is fastened by the screw to the panel.