Multifunctional Sound Device With Low-Interference Perpendicular Vibration
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Solution Overview
Problem
Conventional multifunctional sound devices are bulky, interfere magnetically, and have poor acoustic and vibration performance due to independent control of sound units and motor assemblies, with magnets not on the same plane, leading to increased thickness and interference.
Innovation Solution
A multifunctional sound device design with a housing, sound unit, and motor assembly, where the sound unit and motor assembly are integrated with perpendicular vibration directions, utilizing a mounting groove in the magnetic circuit system to minimize magnetic interference and reduce thickness, featuring a voice coil and stator for independent vibration control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the motor assembly is disposed below the sound unit, then the sound unit and motor assembly can be independently controlled, but the thickness of the device is increased
Solution Approach 1:
The patent combines the motor assembly and sound unit into a shared housing structure, where both components are accommodated within the same housing rather than stacking them vertically. This merging approach allows independent control of both functions while maintaining a compact thickness by utilizing horizontal space arrangement.
2Adaptability or versatility
If the magnet of the sound unit and magnet of the motor assembly are not on the same plane, then both functions can be achieved, but magnetic field driving forces interfere with each other
Solution Approach 1:
The patent extracts the magnets from both the sound unit and motor assembly and positions them on the same plane within the housing. By removing the vertical offset arrangement, the magnetic fields of both components are aligned horizontally, preventing mutual interference while maintaining both sound and motor functions.
3Adaptability or versatility
If the conventional multifunctional sound device uses multiple magnets for sound unit and motor assembly, then both functions can be achieved, but the device volume is increased
Solution Approach 1:
The patent merges the magnetic field generation for both sound and motor functions into a shared magnetic circuit system. By using the same magnet and magnetic circuit structure to serve both the voice coil for sound production and the motor assembly for vibration, the device achieves multifunctionality without increasing volume from additional magnets.
4Ease of operation
If the vibration direction is perpendicular to the vibrating diaphragm of the sound unit, then vibration function is achieved, but only one direction of vibration is provided
Solution Approach 1:
The patent implements a dynamic vibration system where the motor assembly can drive the housing to vibrate in multiple directions. By positioning the motor assembly within the same housing and using the housing itself as the vibration surface, the system achieves multi-directional vibration capability while maintaining the sound unit's primary vibration direction.
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 device achieves reduced size, improved acoustic performance, and enhanced vibration capabilities by minimizing magnetic interference and thickness, allowing for independent vibration in two perpendicular directions.
Implementation Method 1
The voice coil is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and generate sound along a first direction
Implementation Method 2
The first elastic component suspends the magnetic circuit system in the accommodating space. A first end of the first elastic component is fixed to the frame. A second end of the first elastic component is elastically connected to the magnetic circuit system.
Implementation Method 3
The stator is spaced apart from the magnetic circuit system and drives the magnetic circuit system to vibrate along a second direction, so as to drive the sound unit to vibrate along the second direction. The first direction and the second direction are perpendicular to each other.
Implementation Method 4
The second elastic components suspend the sound unit in the accommodating space. The stator is fixed to the housing.
Data Source
AI summary
A multifunctional sound device includes a housing, a sound unit, and a motor assembly. The sound unit includes a frame, a vibration system, a magnetic circuit system, and a first elastic component. The vibration system includes a vibrating diaphragm and a a voice coil. The voice coil drives the vibrating diaphragm to vibrate and generate sound along a first direction. A first end of the first elastic component is fixed to the frame. A second end of the first elastic component is elastically connected to the magnetic circuit system. The voice coil drives the magnetic circuit system to vibrate along the first direction. A mounting groove is defined on the magnetic circuit system. The motor assembly includes a stator and second elastic components. The stator is fixed to the housing. The stator is spaced apart from the magnetic circuit system and drives the magnetic circuit system to vibrate.