Sound Generator Structure Using Moving Speaker Mass for Vibration
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Solution Overview
Problem
Existing multifunctional sound generating devices face issues with large installation space requirements due to high mass block volume and poor vibration and acoustic performance due to poor buffering and support of the sound generating unit.
Innovation Solution
A multifunctional sound generating device with a sound generating unit movably supported by elastic members, where the elastic members are connected to the elastic members, the sound generating device includes a housing, the sound generating device, and the housing defines an opening for sound output. The device includes a driving coil interacting with a magnetic circuit system to drive the sound generating unit to move perpendicular to the vibration direction, utilizing the sound generating unit's weight for mass effect and forming a closed rear cavity with a deformable sealing film to improve acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mass block is added to improve vibration performance, then vibration effect is improved, but installation space is increased
Solution Approach 1:
The patent merges the mass block function with the sound generating unit housing. The sound generating unit itself serves as the mass block, eliminating the need for a separate mass block component. This integration reduces the overall installation space while maintaining the vibration performance enhancement.
Solution Approach 2:
The sound generating unit housing is given multiple functions: it serves both as the enclosure for the vibration system and as the mass block for vibration enhancement. This multi-functionality reduces the number of components and overall device volume.
2Stability of the object's composition
If the sound generating unit is fixed on the housing, then structural stability is improved, but vibration buffering effect is poor
Solution Approach 1:
The patent transitions from a fixed connection to a movable connection between the sound generating unit and housing. The sound generating unit can move relative to the housing along the vibration direction, allowing the housing to buffer vibrations while maintaining structural stability through the movable connection mechanism.
3Stability of the object's composition
If the sound generating unit is fixed on the housing, then structural stability is improved, but acoustic performance is poor
Solution Approach 1:
The movable connection allows the sound generating unit to move freely during operation, improving acoustic performance by reducing constraint on vibration while maintaining structural stability through the designed movable connection 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
The device achieves reduced installation space, enhanced vibration performance, and improved acoustic performance by using the sound generating unit's weight for mass effect and a deformable sealing film to isolate air and sound pressure, enhancing overall device functionality.
Implementation Method 1
at least one elastic member configured to movably support the sound generating unit in the housing
Implementation Method 2
the driving coil interacts with the magnetic circuit system to drive the sound generating unit to move back and forth
Implementation Method 3
a vibration system fixed to a side of two opposite sides of the basin frame, wherein the magnetic circuit system is configured to drive the vibration system to vibrate and output sound
Implementation Method 4
the sealing film is deformable on condition that the sound generating unit moves back and forth in the direction perpendicular to the vibration direction of the vibration system
Data Source
AI summary
Embodiments of the disclosure relate in general to the field of electro-acoustic conversion technologies, and provide a multifunctional sound generating device, which includes a housing, a sound generating unit, and at least one elastic member. The sound generating unit includes a basin frame, a vibration system, and a magnetic circuit system configured to drive the vibration system to vibrate and output sound. The housing defines an opening. The multifunctional sound generating device further includes a driving coil fixed to the housing, and the driving coil interacts with the magnetic circuit system to drive the sound generating unit to move back and forth in a direction perpendicular to a vibration direction of the vibration system. Compared with the related technologies, the multifunctional sound device of the present invention has a simple overall structure, good vibration effect, and better acoustic performance.