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Glass plate constituent

A glass plate and structure technology, applied in glass/slag layered products, diaphragm structures, sound recording carriers, etc., can solve problems such as resonance mode, sound deterioration, residual reverberation sound, etc., to improve the damping effect, sound The reproducibility is good, and the effect of suppressing the generation of abnormal sound

Active Publication Date: 2018-12-21
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in general, the loss factor of these materials is as small as about 1 / 10 to about 1 / 100 compared with paper, so it is easy to leave unexpected reverberation sound
In addition, when excitation is performed at the natural frequency of the component, a resonance mode occurs, and a significant deterioration of the tone color may occur due to this

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0151] Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these Examples.

[0152]

[0153] (Young's modulus, longitudinal wave sound velocity value, density)

[0154]For the Young's modulus E and the sound velocity V of the glass plate, and the longitudinal wave sound velocity value V of the glass plate structure, use a test piece with a length of 60mm, a width of 12mm, and a thickness of 0.5mm to 1mm, and pass the Japanese Industrial Standard (JIS-R1602 -1995) by the ultrasonic pulse method described at 25° C. (DL35PLUS manufactured by Olympus Corporation was used). Regarding the longitudinal wave sound velocity value of the glass plate structure, the sound velocity in the plate thickness direction was measured.

[0155] The density (rho) of a glass plate was measured at 25 degreeC by the Archimedes method (Shimadzu Corporation, AUX320).

[0156] (Resonance frequency)

[0157] The loss factor of the ...

Embodiment 2～12

[0171] A glass plate structure was obtained in the same manner as in Example 1 except that the liquid layer was changed. In addition, in Example 6, instead of the glass plate 2 of the glass plate B, the glass plate 1 was used.

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Abstract

The present invention is a glass plate constituent in which the loss factor is 1*10<-2> or more and the longitudinal wave sound velocity value in the plate thickness direction is 5.5*10<3> m / s or more.

Description

technical field [0001] The present invention relates to a glass plate structure having good acoustic performance, and further relates to a vibration plate, an opening member, and a glass substrate for a magnetic recording medium using the glass plate structure. Background technique [0002] Generally, drum paper (corn paper) or resin is used as a diaphragm for a speaker or a microphone. These materials have a large loss coefficient and are less likely to generate resonant vibrations, so the reproduction performance of sound in the audible range is good. [0003] However, since the sound velocity values ​​in these materials are all low, it is difficult for the vibration of the material to follow the frequency of the sound wave when excited at a high frequency, and it is easy to generate split vibration. Therefore, it is difficult to obtain a desired sound pressure especially in the high frequency range. [0004] In recent years, especially in the case of high-resolution sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R7/06C03C21/00C03C27/06G11B5/73
CPCC03C21/00C03C27/06H04R7/06B32B17/06B32B2255/20B32B2255/26B32B2307/10B32B2307/402B32B2307/412B32B2307/422B32B2307/72G11B5/73921B32B1/00G11B5/73B32B17/10B32B17/10009B32B17/10082B32B17/10137B32B17/10321B32B17/1044B32B7/12B32B11/04B32B27/281B32B27/30B32B2255/24B32B2429/00B32B2607/00C03C3/087H04R7/04H04R2307/023
Inventor 秋山顺
Owner ASAHI GLASS CO LTD
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