Compact Speaker Diaphragm Structure for Balanced Low-Frequency Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional cone speakers in vehicles face issues of large structural size, low efficiency, and significant low-frequency vibration, failing to meet the requirements of high sound quality, flexible layout, low power consumption, and small vibration.
Innovation Solution
A speaker design featuring a vibration system with a diaphragm assembly, first and second elastic wave assemblies, and a connecting wall with symmetric suspension portions, integrated into a compact rectangular frame, utilizing internal space efficiently and enhancing vibration balance and acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a traditional cone speaker structure is used, then the speaker can produce sound, but the structural size becomes large
Solution Approach 1:
The diaphragm assembly is divided into multiple independent suspension portions (first suspension portion, second suspension portion, third suspension portion) that are symmetrically distributed. Each suspension portion connects to elastic wave assemblies, creating a segmented vibration system that reduces overall size while maintaining acoustic performance through distributed vibration sources.
Solution Approach 2:
The patent transitions from a traditional single-cone vertical structure to a multi-dimensional arrangement with symmetric suspension portions extending in multiple directions. The elastic wave assemblies are positioned at different spatial locations and orientations, utilizing three-dimensional space more efficiently to achieve compact size without sacrificing sound quality.
2Object-generated harmful factors
If a traditional cone speaker structure is used, then the speaker can produce sound, but low-frequency vibration becomes great
Solution Approach 1:
The symmetric suspension portions are positioned to create counterbalancing vibration forces. The first, second, and third suspension portions with their associated elastic wave assemblies are arranged symmetrically around the dome, causing low-frequency vibrations to cancel each other out through destructive interference, thereby reducing harmful vibrations while maintaining acoustic output.
Solution Approach 2:
While the overall structure employs symmetry for vibration cancellation, the individual suspension portions and elastic wave assemblies have asymmetric geometries optimized for their specific locations. The connecting wall structure and suspension arm configurations are asymmetrically designed to achieve optimal vibration distribution and cancellation patterns.
3Use of energy by moving object
If a traditional cone speaker structure is used, then the speaker can produce sound, but efficiency becomes low
Solution Approach 1:
The elastic wave assemblies provide dynamic vibration control, allowing the system to adapt vibration patterns to different frequency requirements. The flexible suspension portions and elastic wave structures enable efficient energy transfer across a wide frequency range, improving overall system efficiency while maintaining high sound quality through dynamic response optimization.
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 design achieves improved space utilization, reduced size, balanced vibration, and enhanced acoustic performance, meeting the demands of high sound quality, flexible layout, and low power consumption.
Implementation Method 1
a voice coil assembly driving the diaphragm assembly to vibrate and sound
Implementation Method 2
a first elastic wave assembly fixed with the frame, and a second elastic wave assembly fixed with the frame
Data Source
AI summary
A speaker includes a frame, a magnetic circuit system with a magnetic gap, and a vibration system, the vibration system includes a diaphragm assembly, a voice coil assembly, a first elastic wave assembly fixed, and a second elastic wave assembly, the diaphragm assembly includes a dome, a suspension, and a connecting wall extending from the dome to the voice coil assembly, the connecting wall includes a connecting portion connected with the dome the suspension, and a first suspension portion and a second suspension portion located at a side away from the dome, one end of the first elastic wave assembly away from the frame is connected with the first suspension portion, one end of the second elastic wave assembly away from the frame is connected with the second suspension portion. Compared with the related art, the speaker disclosed by the present disclosure could improve space utilization.