Vibration sounding apparatus

A technology of a sounding device and a vibration system, which is applied to sensors, electrical components, etc., can solve the problems of large thickness, complex structure, and low magnetic field strength of the vibration sounding device, and achieve good overall performance, high acoustic sensitivity, and high magnetic field strength. Effect

Active Publication Date: 2015-11-25
GOERTEK INC
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the cylindrical voice coil occupies a large space, the magnetic circuit system needs to reserve a magnetic gap for it, and it also needs to reserve a vibration space for it in the vertical direction, resulting in the thickness of the existing vibration and sound generating devices. , unable to meet the requirements of thinning and miniaturization of portable electronic equipment
At the same time, due to the existence of the magnetic gap, the volume of the magnet is small, so that the magnetic field strength is small, and the Lorentz force received by the voice coil in the magnetic field is small, which in turn leads to low acoustic sensitivity of the vibration sounding device. It is also weak, and the overall performance is poor, and it is difficult to meet people's increasing consumer demand for portable electronic devices
Moreover, the existing vibrating and sounding device has complex structure, difficult assembly and low production efficiency

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0041] Such as figure 1 , figure 2 and image 3 Commonly shown, a kind of vibrating and sounding device comprises shell, and shell is made of upper shell 10, lower shell 12 and side cover 14 that combine together, and lower shell 12 is rectangular structure, and the edge of its opposite two short sides The parts are respectively vertically provided with one side wall, and the upper case 10 is buckled on the side walls on both sides, one long side of the lower case 12 is combined with the upper case 10 through the side cover 14, and the other long side is combined There is a fixing part 16, which is used to fix the voice coil bobbin 32 of the vibration system, and here forms the side wall of the housing. A vibrating system and a magnetic circuit system are accommodated in the housing. A sound outlet 140 is provided in the middle of the side cover 14 , and the outside of the sound outlet 140 is covered with a dust-proof net 20 . The side where the upper casing 10 is combined...

Embodiment 2

[0052] This embodiment is basically the same as Embodiment 1, the difference is that:

[0053] Such as Figure 8 As shown, the bending part 466b of the elastic support is provided with a hollow 4660, that is, an opening extending along the bending direction of the bending part 466b is provided on the four bending parts 466b, and the setting of the hollow 4660 can further The compliance of the elastic support is improved, and the resonant frequency of the vibration and sound generating device is reduced.

[0054] Such as figure 1 As shown, the working principle of the vibrating and sounding device of the present invention is as follows:

[0055]When an alternating current is passed to the voice coil 34, the voice coil 34 will be subjected to the Lorentz force in the magnetic field generated by the magnet 40, and the magnetic field lines generated by the magnet 40 will pass through the voice coil 34 vertically. According to the left-hand rule, the voice coil 34 will be subjec...

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Abstract

The invention discloses a vibration sounding apparatus which relates to the technical field of electro-acoustic products; the apparatus comprises a housing, a vibration system and a magnetic circuit system. The vibration system and the magnetic circuit system are arranged in the housing. One side face of the housing is provided with a sound releasing hole. The vibration system comprises a vibration film, a voice coil and a voice coil framework to have the vibration film and the voice coil connected. The voice coil is designed with a flat structure; the voice coil plane is perpendicular to the vibration film plane. The magnetic circuit system comprises a magnet; the magnet plane is in parallel with the voice coil plane. The vibration sounding apparatus further comprises a mass block and an elastic support component; the elastic support component makes the mass block and the magnet suspend inside the housing. The elastic support component is designed with a circular structure and the mass block and the magnet are arranged at the inner side of the elastic support component. The two side edges of the elastic support component facing each other are fixedly connected with the magnet and the other two side edges of the elastic support component are fixedly arranged on the housing.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a vibration and sound generating device used in portable electronic equipment. Background technique [0002] The vibration and sound generating device is a multifunctional acoustic device, which has the function of a vibration motor in addition to the vibration and sound function of a common speaker. The vibration and sound generating device combines the functions of two important components (speaker and vibration motor) in the original portable electronic equipment, which not only simplifies the assembly process of the portable electronic equipment, but also effectively saves the internal space of the portable electronic equipment, reduces the The production cost of portable electronic equipment is lower, so the vibration sound generating device with sound and vibration functions has been more and more widely used in the field of portable electronic equipment. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06H04R9/02
CPCH04R9/025H04R9/06H04R2499/11H04R9/02H04R9/046
Inventor 朱跃光王超
Owner GOERTEK INC
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