Sound production structure unit, earphone including sound production structure unit and sound production driving method

A technology of sounding structure and earphones, which is applied in the field of sounding structural units, earphones and driving sound, can solve the problems of high harmonic distortion and poor sound quality, and achieve the effect of good sound quality, simple structure and high market competitiveness

Active Publication Date: 2016-06-29
SHENZHEN JINGTUO INNOVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the structural design of traditional piezoelectric speakers, the sound pressure frequency response curve generally has sharp fluctuations in the mid-frequency band, resulting in high harmonic distortion and poor sound quality

Method used

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  • Sound production structure unit, earphone including sound production structure unit and sound production driving method
  • Sound production structure unit, earphone including sound production structure unit and sound production driving method
  • Sound production structure unit, earphone including sound production structure unit and sound production driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The present embodiment provides a sound-generating structural unit, which includes a vibrating membrane and a piezoelectric ceramic that are separately arranged. The piezoelectric ceramic is mechanically deformed under the excitation of a driving signal from a driving circuit, thereby driving the vibrating membrane to vibrate and produce sound.

[0065] The sounding structural unit provided in this embodiment combines the transmission structure of the moving iron earphone with the piezoelectric ceramic material, retains their respective advantages and avoids their respective shortcomings, and has a simple and compact structure. The sound conversion efficiency is high, the sound quality is good, and it provides a design space for adjusting the vibration mode of the diaphragm and optimizing the sound quality.

[0066] The specific structure of the sounding structural unit will be described below in conjunction with the accompanying drawings.

[0067] figure 1 A sound-gen...

Embodiment 2

[0087] This embodiment provides a method for driving sound, the method is:

[0088] Provide diaphragm and piezoelectric ceramics, which are set separately;

[0089] Provide a driving signal to drive the piezoelectric ceramic to produce mechanical deformation;

[0090] The diaphragm is driven by piezoelectric ceramics to produce sound.

[0091] Preferably, the piezoelectric ceramic is connected or coupled to the diaphragm through a connecting piece.

[0092] The driving and sounding method provided in this embodiment uses piezoelectric ceramics to drive the diaphragm set separately from it to make sound. It has a simple and compact structure, high electro-acoustic conversion efficiency, and good sound quality. space.

Embodiment 3

[0094] This embodiment provides an earphone, including an earphone housing and the sound-generating structural unit as described in Embodiment 1 disposed in the earphone housing. The earphone provided by this embodiment adopts the above-mentioned sound-generating structural unit, has a simple and compact structure, good sound quality and high electro-acoustic conversion efficiency, and has high market competitiveness and broad market space.

[0095] Figure 10 shows the figure 1 The illustrated sounding structural unit is applied to an embodiment of an earphone. As shown in the figure, the sounding structural unit is bonded and fixed to the earphone shell 11. The earphone shell 11 is provided with an earphone sound hole 111, and the earphone sound hole 111 is connected to the sound structural unit. A sealed connection is formed between the sound holes 61.

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Abstract

The invention discloses a sound production structure unit and an earphone including the sound production structure unit, and relates to the technical field of sound production devices. The sound production structure unit comprises a diaphragm and a piezoelectric ceramic, wherein the piezoelectric ceramic is used for generating mechanical deformation under excitation of driving signals of a drive circuit so as to drive the diaphragm to vibrate and produce sound. The invention further provides an earphone utilizing the sound production structure unit. The sound production structure unit provided by the invention combines a transmission structure of a moving iron earphone and materials of the piezoelectric ceramic, which retains the advantages and avoids the deficiencies; the structure is simple and compact; the diaphragm and the piezoelectric ceramic are separately arranged, so that the electric-acoustic conversion efficiency is high, and the tone quality is excellent; furthermore, a design space is provided for adjusting a vibration mode of the diaphragm and optimizing the tone quality.

Description

technical field [0001] The invention relates to the technical field of sounding devices, in particular to a sounding structural unit, an earphone including the sounding structural unit, and a method for driving sounding. Background technique [0002] The earphone is an electric-power-acoustic electroacoustic converter, which is mostly used in mobile phones, walkmans and other equipment. The earphone is generally separated from the media player and connected with a plug. Headphones have the advantage of portability, and you can listen to the audio alone without affecting others. It can also isolate the sound of the surrounding environment, which is very helpful for those who work in a recording studio or in a noisy environment. [0003] According to the classification of electro-acoustic conversion, earphones can be divided into moving coil, electrostatic, moving iron and so on. [0004] The voice coil of the dynamic earphone is in a permanent magnetic field and connected t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R17/00
CPCH04R17/00
Inventor 张韬闫鑫
Owner SHENZHEN JINGTUO INNOVATION TECH
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