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A diaphragm for enhancing mid-frequency band output and its preparation method

A frequency band and thin-film technology, which is applied in the field of diaphragm and its preparation to enhance the output of the mid-frequency band, can solve the problems of high resonance, cold sound of the moving iron unit, etc., to reduce high-frequency loss, ease the reduction of mechanical strength, The effect of improving the coldness of the sound

Active Publication Date: 2016-04-13
SUZHOU YICHUAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The generating unit includes a moving iron unit, a shielding shell and a sounding tube. The moving iron unit is the main part of the sound. The moving iron unit includes a diaphragm and a magnetic drive mechanism. The magnetic drive mechanism of the traditional moving iron unit has a high electromagnetic conversion efficiency. The resonance of the iron sheet in the mechanism is high, so the sound in the middle and high frequency range will be produced, which will cause the sound from the moving iron unit to be colder. One method is to open a cavity on the main body of the diaphragm and partially reduce the vibration of the diaphragm. Mechanical strength to increase the low-frequency output, which can produce low-frequency compensation with the high-frequency resonance of the iron sheet, thus improving the cold sound of the original moving iron unit, but in many cases, the sound output of the sound unit is required to have a mid-frequency range , there is an urgent need for a sound unit with a simple structure and easy fabrication to solve the above problems

Method used

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  • A diaphragm for enhancing mid-frequency band output and its preparation method
  • A diaphragm for enhancing mid-frequency band output and its preparation method
  • A diaphragm for enhancing mid-frequency band output and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 , as shown in the illustration, a diaphragm that enhances the output of the mid-frequency band includes a diaphragm main body 1, two connecting parts 2, a diaphragm support 3 and a prestressed film 4, and the prestressed film 4 is fixed and tight. Can be sealed on the diaphragm support 3; one end of the diaphragm main body 1 is connected to the diaphragm support 3 through the connecting part 2, the diaphragm main body 1 includes a front and a back; the front or back is in contact with the prestressed film 4; the diaphragm The main body 1 is provided with a cavity 11; the cavity 11 communicates with the above-mentioned front and back; the cavity 11 is connected with a partition 12.

[0025] The cross-sectional area of ​​the cavity 11 on the front and back is 25% of the area of ​​the front and back respectively, and the cross-sectional area of ​​the partition 12 on the front and back is 40% of the cross-sectional area of ​​the cavity 11 respectively.

[0026...

Embodiment 2

[0033] see figure 2 , as shown in the legend therein, the rest is the same as that of Embodiment 1, the difference is that the cross section of the cavity 11 is elliptical, and the cross section of the partition 12 is elliptical.

[0034] The diaphragm main body 1 , the connecting portion 2 and the diaphragm support 3 are made of copper or aluminum-magnesium alloy.

Embodiment 3

[0036] see image 3 , as shown in the legend therein, the rest is the same as that of Embodiment 1, except that the cross section of the cavity 11 is elliptical, and the cross section of the partition 12 is grid-shaped.

[0037] The diaphragm main body 1 , the connecting portion 2 and the diaphragm holder 3 are made of iron-nickel alloy.

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Abstract

The invention discloses a vibrating diaphragm used for enhancing a middle-frequency band output. The vibrating diaphragm comprises a vibrating diaphragm main body, a connecting portion, a vibrating diaphragm holder and a prestress force thin diaphragm. The prestress force thin diaphragm is tightly fixed on the vibrating diaphragm holder. One end of the vibrating diaphragm main body is connected with the vibrating diaphragm holder through the connecting portion. The vibrating diaphragm main body comprises an obverse face and a reverse face. The obverse face or the reverse face is tightly contacted with the prestress force thin diaphragm in a fit mode. The vibrating diaphragm main body is provided with a cavity body. The cavity is communicated with the obverse face and the reverse face. A partition is connected in the cavity body. The cavity body which is formed in the vibrating diaphragm can be with high-frequency resonance of a metal plate to producing low-frequency compensation so as to improve the phenomenon that the sound hearing feelings of the moving-iron unit are inclined to be cold. The partition which is additionally arranged in the cavity body can solve the problem that mechanical strength of the vibrating diaphragm is reduced because the cavity body is installed. The high-frequency loss of a sound unit can be decreased to obtain a middle-frequency band sound output. The invention further discloses a preparation method of the vibrating diaphragm.

Description

technical field [0001] The invention relates to a vibrating membrane, in particular to a vibrating membrane that enhances the output of the middle frequency band and a preparation method thereof. Background technique [0002] The generating unit includes a moving iron unit, a shielding shell and a sounding tube. The moving iron unit is the main part of the sound. The moving iron unit includes a diaphragm and a magnetic drive mechanism. The magnetic drive mechanism of the traditional moving iron unit has a high electromagnetic conversion efficiency. The resonance of the iron sheet in the mechanism is high, so the sound in the middle and high frequency range will be produced, which will cause the sound from the moving iron unit to be colder. One method is to open a cavity on the main body of the diaphragm and partially reduce the vibration of the diaphragm. Mechanical strength to increase the low-frequency output, which can produce low-frequency compensation with the high-freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/02H04R31/00
Inventor 李梁周巍
Owner SUZHOU YICHUAN TECH CO LTD
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