Protective Phone Case With External Vibration Audio Module
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Solution Overview
Problem
The miniaturization of mobile communication devices is hindered by the space required for vibrators and amplifiers used in traditional vibrating acoustic systems, which also increase manufacturing costs.
Innovation Solution
A protection case for mobile communication devices integrates a main circuit board, amplifier, and vibrator with a flexible printed circuit board, allowing the device to generate audible sound through vibration without the need for these components being housed within the device, thereby enabling miniaturization and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional vibrating acoustic system with vibrator and amplifier is used inside the mobile communication device, then audible sound can be generated, but the device size increases and manufacturing cost increases
Solution Approach 1:
The vibrator and amplifier are extracted from the mobile communication device and relocated to an external protection case. The protection case contains the vibrating acoustic driving module with the vibrator connected to the main circuit board via FPC, allowing the device to generate audible sound without housing these components internally, thus reducing device size while maintaining sound generation capability
Solution Approach 2:
The protection case is designed to serve multiple functions: it provides physical protection for the mobile communication device, houses the vibrating acoustic driving module for audible sound generation, and eliminates the need for internal vibrator and amplifier components. This multi-functional design resolves the contradiction by combining protection and acoustic functions in the external case
2Reliability
If a traditional vibrating acoustic system with vibrator and amplifier is used inside the mobile communication device, then audible sound can be generated, but manufacturing cost increases
Solution Approach 1:
By extracting the vibrator and amplifier from the device and placing them in the protection case, the device itself requires fewer components and simpler assembly, reducing manufacturing complexity and cost. The protection case becomes a self-contained acoustic module that can be separately manufactured and assembled
Solution Approach 2:
The protection case with the vibrating acoustic driving module serves as a self-contained unit that provides audible sound generation without requiring the device to include these components. This shifts the acoustic function to an accessory that serves both protective and acoustic purposes, reducing device manufacturing requirements
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 allows for the generation of audible sound while minimizing space and manufacturing costs, facilitating the miniaturization of mobile communication devices and enhancing their protection.
Implementation Method 1
the vibrator 4, the FPC 5 and the main circuit board 2 (with the amplifier 3 thereon) cooperatively form a vibrating acoustic driving module for driving the main body 1 or other vibrating medium to vibrate and produce audible sound
Data Source
AI summary
A protection case for a mobile communication device includes a main body for receiving the mobile communication device, a main circuit board with an amplifier installed thereon, and a vibrator electrically connected to the amplifier. The amplifier comprises audio signal input terminals for receiving audio signals from the mobile communication device, and audio signal output terminals for outputting the audio signals which are amplified by the amplifier to the vibrator; the vibrator is driven to vibrate in accordance with the audio signals output by the amplifier.