Sounder module

A technology of sound generator and module, applied in speaker screen, speaker transducer fixing, sensor and other directions, can solve the problems of intensified polarization of vibration system, large sound pressure release, asymmetric distribution of sound field, etc., to reduce harmonic distortion , Improve harmonic distortion, reduce the effect of system polarization

Active Publication Date: 2015-09-09
GOERTEK INC
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to meet the structural design of the overall system, some sound generator modules often have a raised upper sound port design, that is, the sound outlet channel is longer, and its port is higher than the outer surface of the shell; The requirements of system assembly often cannot make it located in the center of the vibration system
This kind of asymmetric riser-type sound outlet will lead to asymmetric distribution of the sound field of the front acoustic cavity of the sound generator module, the sound pressure release at the sound outlet is relatively large, the sound field energy at the sound outlet is relatively concentrated, and the sound energy is relatively concentrated The reaction force of the area to the vibration system is greater, resulting in an asymmetric distribution of sound pressure on the diaphragm surface, such as Figure 5 shown
The asymmetrically set sound outlet will lead to asymmetric distribution of the acoustic load force on the surface of the diaphragm, which will directly lead to increased polarization of the vibration system and increased harmonic distortion

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, a sounder module includes a casing, and the casing is composed of an upper casing 10 and a lower casing 20 combined together, and a vibration system and a magnetic circuit system are accommodated in the space enclosed by the upper casing 10 and the lower casing 20 . The vibration system includes a diaphragm 30 whose edge is fixed between the upper case 10 and the lower case 20, a spherical top 32a is fixed in the middle of one side of the diaphragm 30 close to the upper case 10, and a voice coil is fixed on the other side of the diaphragm 30. 34. The magnetic circuit system includes a pot frame 40 fixed on the inner side of the lower shell 20, a magnet 42 and a washer 44 are fixed in the center of the inner side of the pot frame 40 in turn, and a magnetic gap is provided between the magnet 42, the washer 44 and the side wall of the pot frame 40 , the end of the voice coil 34 is located in the magnetic gap. The voice coil 34 reciprocates up ...

Embodiment 2

[0033] This embodiment is basically the same as Embodiment 1, the difference is that:

[0034] Such as image 3 and Figure 4 Commonly shown, the position corresponding to the orthographic projection area of ​​the sound outlet 12 on the dome 32b is provided with a pressure regulating portion 320b, the pressure regulating portion 320b includes a central portion 322 of a planar structure, and the periphery of the central portion 322 is connected to the dome through a connecting portion 324. The other parts of 32b are joined together, and the connection part 324 is an approximately tapered annular slope structure.

[0035] The structure of the pressure regulating part is not limited to the structure described in the above two embodiments, it can also be a wave surface structure with a depression in the middle, as long as it can play the role of balancing the sound pressure of the front acoustic cavity.

[0036] In the present invention, the spherical dome is arranged as an asym...

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Abstract

The invention discloses a sounder module, and relates to the technical field of electroacoustic products. The sounder module comprises a shell, wherein a vibration system and a magnetic circuit system are accommodated in the shell; the shell is provided with a sound outlet corresponding to the position of the vibration system; the sound outlet is formed in a way of being deviated from the center position of the vibration system, and the sound outlet is a rising port higher than the surface of the shell; the vibration system comprises a vibrating diaphragm; the middle part which is close to the sound outlet side of the vibrating diaphragm is provided with a globe-roof; a voltage regulating part is arranged in a right projection area corresponding to the sound outlet on the globe-roof; and the voltage regulating part is higher than other positions of the globe-roof, and projects towards the sound outlet. Through adoption of the sounder module, the technical problem of asymmetrical sound field distribution of a front sound cavity of the sounder module in the prior art is solved. Asymmetrical sound field distribution of the front sound cavity can be balanced; the sound pressure distribution on the surface of the vibrating diaphragm is increased locally, and is balanced with the other parts; the system polarization is reduced effectively; and harmonic distortion is reduced.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a sounder module. Background technique [0002] The sounder module is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signals and sound signals, and is an energy conversion device. Existing sounder modules usually include a housing in which a vibration system and a magnetic circuit system are accommodated. The position corresponding to the vibration system on the housing is provided with a sound outlet of the sounder module. Usually, the sound outlet corresponds to the center of the vibration system. The position is set, and the port of the sound outlet will be flush with the outer surface of the housing. However, in order to meet the structural design of the overall system, some sound generator modules often have a raised upper sound port design, that is, the sound outlet channel is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02
CPCH04R1/2811H04R1/023H04R1/025H04R1/2888H04R7/127H04R9/025H04R31/00
Inventor 祖峰磊郭晓冬
Owner GOERTEK INC
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