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Sounding device, acoustic module and electronic equipment equipped with the sounding device

A technology of sounding device and electronic equipment, which is applied in the field of acoustics, can solve the problems of not being able to improve the low frequency band, damage the acoustic performance of the sounding unit, and affect the service life of the sounding unit, so as to achieve the effect of increasing the equivalent volume and improving the low frequency sensitivity

Active Publication Date: 2021-11-26
GEER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are problems in the above two methods. The first method of adding sound-absorbing materials to the cabinet needs to achieve good sealing and packaging of the sound-absorbing materials. Otherwise, if the sound-absorbing materials enter the sound-generating unit, it will damage the acoustic performance of the sound-generating unit and affect the sound-generating unit. service life; the second scheme using a passive radiator can only improve the sensitivity of the frequency band near the resonance point, but cannot improve the sensitivity of all low frequency bands

Method used

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  • Sounding device, acoustic module and electronic equipment equipped with the sounding device
  • Sounding device, acoustic module and electronic equipment equipped with the sounding device
  • Sounding device, acoustic module and electronic equipment equipped with the sounding device

Examples

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Effect test

Embodiment 1

[0035] like Figure 1 to 3 As shown, the sounding device provided by the present invention includes a vibrating assembly and a magnetic circuit assembly 3, wherein the vibrating assembly includes a diaphragm 1 and a voice coil 41 bonded to the lower side of the diaphragm 1, wherein "upper" "under" figure 2 The structure shown is accurate. The diaphragm 1 includes an intermediate portion 11 located in an intermediate position and a folding ring portion 12 located at the edge position, wherein the intermediate portion 11 is a hard material, and the intensity of the intermediate portion 11 is greater than the strength of the folding ring portion 12, intermediate during the vibration process. The portion 11 does not modify it. The magnetic circuit assembly 3 is located below the diaphragm 1, and the magnetic circuit assembly 3 is a dual magnetic circuit structure including a central magnetic circuit located in a central position and a side magnetic circuit located between the edge posi...

Embodiment 2

[0052] like Figure 4 As shown, the main difference between the present embodiment is three points, and the flexible variable portion 2 is bonded to the composite sheet 20, and the flexible variable portion 2 is bonded to the lower side surface of the upper conductive magnetic plate 311, and the flexible variable portion 2 and the upper A support 5 is provided between the magnetic plates 311.

[0053] In this embodiment, the intermediate portion 21 of the flexible variable portion 2 is bonded to a flat-shaped composite sheet 20, the composite sheet 20 is a hard material, and it is possible to prevent the intermediate portion 21 from separating the vibration in high frequency band, that is, the case where vibration is not synchronized. The vibration of the flexible variable portion 2 is more stable. Wherein, the intermediate portion 21 can be a sheet-like structure illustrated, or may be the intermediate hollow only retain the inner edge portion of the composite of the composite she...

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Abstract

The invention provides a sound generating device, which includes a vibrating assembly and a magnetic circuit assembly, the vibrating assembly includes a diaphragm, and the vibrating diaphragm generates sound waves, wherein the middle area of ​​the magnetic circuit assembly is hollowed out to pass through the magnetic circuit assembly The expansion cavity of the magnetic circuit assembly is provided with a flexible deformation part in the area of ​​the expansion cavity; the flexible deformation part covers the port of the expansion cavity or the flexible deformation part separates the expansion cavity It is two parts isolated from each other; the flexible deformation part is arranged directly to the diaphragm, and can vibrate according to the change of air pressure. The sound generating device increases the equivalent volume of the sound cavity behind the sound generating device, and improves the low-frequency sensitivity of the sound generating device.

Description

Technical field [0001] The present invention relates to the field of acoustic technology, and more particularly to a sounding device and an acoustic module and an electronic device mounted with the sound absorbing device. Background technique [0002] In general, the acoustic system of conventional structures includes a closed casing and a sound unit disposed on the closed casing, forming a chamber between the closed casing and the sound unit, due to the volume limitation of the chamber in the acoustic system, acoustic system In particular, the small acoustic system is difficult to achieve satisfactory bass reproduction effect. Conventionally, in order to achieve satisfactory bass reproduction in the acoustic system, two means are usually used, one is to set the sound absorbing material in the box body of the acoustic system, used to adsorb or remove the gas in the box, and act Increasing the effect of reducing the low frequency resonant frequency, the other is to provide a passi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R7/16H04R7/26
CPCH04R7/16H04R7/26H04R7/04H04R9/025H04R1/2834H04R1/2819H04R9/027H04R9/04H04R9/06H04R2209/022
Inventor 葛连山王兴龙
Owner GEER TECH CO LTD
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