Vibrating diaphragm used for enhancing middle-frequency band outputs and preparation method thereof

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...

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

Images