Glass Plate Diaphragm with Liquid Layer for Independent Vibration
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Solution Overview
Problem
Conventional diaphragms for loudspeakers, including glass sheet and laminated glass with a butyral-based resin layer, face difficulties in performing two-channel stereophonic or multiphonic reproduction due to interference between different vibration modes on a single sheet.
Innovation Solution
A glass sheet composite is created with a first glass sheet, a second sheet opposite the first, and a liquid layer sealed between them, surrounded by a seal material and partitioning parts, allowing independent vibration areas for enhanced stereophonic or multiphonic reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single glass sheet is used as a diaphragm, then high sound propagation velocity is achieved, but different vibration modes interfere with each other when multiple vibrators are disposed on the sheet
Solution Approach 1:
The glass sheet is divided into multiple independent vibration areas by disposing partitioning parts (first and second partitioning parts) that extend in different directions. These partitioning parts create separate regions where vibrators can operate independently without vibration mode interference, while each region maintains the high sound propagation velocity of glass material.
2Adaptability or versatility
If multiple vibrators are disposed on a single glass sheet to perform stereophonic reproduction, then sound reproduction capability is improved, but vibration modes of different areas interfere with each other
Solution Approach 1:
The glass sheet is segmented into multiple independent vibration areas by partitioning parts extending in different directions. This segmentation allows multiple vibrators to be disposed on different areas for stereophonic reproduction while preventing vibration mode interference between areas, as each area vibrates independently.
3Loss of energy
If cone paper or resin is used as diaphragm material, then high loss coefficient and good sound reproduction are achieved, but low acoustic velocity causes poor high-frequency reproduction
Solution Approach 1:
The invention uses a glass sheet as the base material which provides high acoustic velocity for good high-frequency reproduction. The glass sheet itself serves as the diaphragm material, combining the advantages of high sound propagation velocity with appropriate damping characteristics through its inherent properties and the partitioning 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 glass sheet composite enables independent vibration areas, facilitating stereophonic, multiphonic, and local sound reproduction, improving sound reproduction quality and allowing image-sound linkage, particularly suitable for high-frequency sound reproduction.
Implementation Method 1
a liquid layer formed by sealing up a liquid between the first glass sheet and the second sheet
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(d)
Figure 3(a)~3(d)
AI summary
A glass plate construct provided with a first glass plate, a second plate disposed facing the first glass plate, and a liquid layer formed by sealing a liquid between the first glass plate and the second plate, the glass plate construct having a plurality of vibration areas that are independent from each other in a plan view. The glass plate construct is a diaphragm including at least one vibrator installed on one side or both sides of the glass plate construct. Independent vibration in each of the vibration areas is made possible, thus enabling stereophonic or multidimensional reproduction, as well as enabling local reproduction matched to a video. Furthermore, because the present invention is a diaphragm that includes a vibrator, sound reproduction is exceptional.