CN111836177B

CN111836177B - Sound production device

Info

Publication number: CN111836177B
Application number: CN202010712062.0A
Authority: CN
Inventors: 范双双
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-09-17
Anticipated expiration: 2040-07-22
Also published as: CN111836177A

Abstract

The invention discloses a sounding device which comprises a shell, a sounding monomer, sound-absorbing powder and an isolation net, wherein the sounding monomer, the sound-absorbing powder and the isolation net are arranged in the shell, the isolation net and the shell are encircled to form an accommodating cavity, the sound-absorbing powder is filled in the accommodating cavity, the isolation net comprises at least one conductive net, and the conductive net is used for electrically connecting an external circuit and a voice coil of the sounding monomer. According to the technical scheme, the external circuit and the voice coil are electrically connected by arranging the conductive net, so that FPCB and cable lines in the traditional sound production device can be replaced, the space occupied by the cavity is saved, and the powder filling space is enlarged.

Description

Sound production device

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sounding device.

Background

The sound production device is an important acoustic component of portable electronic equipment, is used for completing conversion between an electric signal and an acoustic signal, and is an energy conversion device. The free unit of sound production carries out electroacoustic conversion, and the free vibration subassembly of sound production includes the voice coil loudspeaker voice coil of vibrating diaphragm and drive vibrating diaphragm vibration, and the free voice coil loudspeaker voice coil is connected in order to realize being connected with external circuit through cable line or the flexible circuit board electricity in with the sound production device inside, and on line to naked pad through the voice coil loudspeaker voice coil lead wire, cable line or flexible circuit board switched on with the pad and then realize the electric connection of voice coil loudspeaker voice coil and external circuit. The arrangement of cable wires or flexible circuit boards needs to occupy the cavity space of the sounding device, so that the powder filling space is reduced, and the thinning arrangement of the sounding device is not facilitated.

Disclosure of Invention

The invention mainly aims to provide a sounding device, and aims to solve the technical problem that the arrangement of a cable wire or a flexible circuit board occupies the cavity space of the sounding device and is not beneficial to the thinning arrangement of the sounding device.

In order to achieve the purpose, the sound production device provided by the invention comprises a shell, a sound production unit, sound absorption powder and an isolation net, wherein the sound production unit, the sound absorption powder and the isolation net are arranged in the shell, the isolation net and the shell are surrounded to form an accommodating cavity, the sound absorption powder is filled in the accommodating cavity, the isolation net comprises at least one conductive net, and the conductive net is used for electrically connecting an external circuit and a voice coil of the sound production unit.

Preferably, the number of the conductive nets is multiple, and the multiple conductive nets are arranged to form an isolation net.

Preferably, the gap between two adjacent conductive nets is filled with an insulating sealant.

Preferably, the isolating net is further provided with filling holes for filling sound-absorbing powder, and the sound generating device further comprises a sealing element for sealing the filling holes.

Preferably, the conductive mesh includes a first terminal for electrically connecting to an external circuit, a second terminal for electrically connecting to the voice coil, and a connection mesh connecting the first terminal and the second terminal, and the sound-absorbing powder is filled between the connection mesh and the case.

Preferably, the number of the conductive nets is two, and the second terminals of the two conductive nets are respectively connected with the input end and the output end of the voice coil.

Preferably, the casing includes the inferior valve, the lid is located upper cover on the inferior valve and locating installation barricade on the inferior valve, the border lid of separation net is located on the installation barricade, the installation barricade the inferior valve with the separation net encloses into accept the chamber.

Preferably, a plurality of notches are formed in the mounting retaining wall, and the first terminal and the second terminal respectively penetrate through the notches to be connected with the connecting net.

Preferably, the second terminal includes certainly the connecting network to the first connecting portion that the sound production monomer extends, certainly first connecting portion to the second connecting portion that the inferior valve was buckled to extend and certainly the third connecting portion that first connecting portion was buckled to extend, first connecting portion pass the breach, the second connecting portion with installation barricade laminating sets up, the third connecting portion with the inferior valve laminating sets up, the free voice coil loudspeaker voice coil of sound production with the third connecting portion electricity is connected.

Preferably, a plurality of supporting columns are further arranged on the lower shell and used for supporting the connecting net.

Preferably, the conductive net is provided with a plurality of pores communicated with the containing cavity, and the pore diameter of the pores is smaller than the particle size of the sound-absorbing powder.

Preferably, the conductive net is any one of an iron net, a steel net, a copper net, a silver net and an aluminum-plated silver net.

In the invention, the containing cavity is formed by enclosing the isolation net and the shell, so that the sound-absorbing powder can be filled in the containing cavity, and the sound quality of the product is improved; through the electrically conductive net that adopts electrically conductive material, realize simultaneously that sealed chamber and the function of electrically conductive voice coil loudspeaker voice coil and external circuit of acceping replaces FPCB and cable line in traditional sound production device, saves occupation space, and the increase is irritated the powder space and is of value to the slim setting of sound production device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a disassembled structure of a sound device according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an isolation net according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of a portion A of the sound producing device of FIG. 1;

fig. 4 is an enlarged schematic structural view of a part B of the sound production device shown in fig. 2.

Examples reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Sound production device	1	Sound monomer
11	Lower casing	12	Mounting step
				13	Upper cover	14	Gap
15	Mounting barricade	17	Support column
				2	Containing cavity	3	Isolation net
31	Conductive net	311	First terminal
				313	Second terminal	3131	First connecting part
3133	Second connecting part	3135	Third connecting part
				315	Connecting net	32	Filling hole
33	Insulating sealant	314	Pores of

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sounding device.

Referring to fig. 1 and 2, a sound generating device 100 according to the present invention includes a housing (not shown), a sound generating unit 1 disposed in the housing, sound absorbing powder, and an isolation mesh 3, where the isolation mesh 3 and the housing surround to form an accommodation cavity 2, the sound absorbing powder (not shown) is filled in the accommodation cavity 2, the isolation mesh 3 includes at least one conductive mesh 31, and the conductive mesh 31 is used to electrically connect an external circuit and a voice coil of the sound generating unit 1.

Specifically, the diaphragm of the sound generating unit 1 divides the casing into a front cavity and a rear cavity, and the accommodating cavity 2 is communicated with the rear cavity through the pores 314 on the conductive net 31, so that the sound quality of the sound generating unit 1 is improved. Of course, the containing cavity 2 may be disposed at other positions of the housing as required by those skilled in the art, for example, a sound outlet channel connecting the front cavity and the outside is further disposed on the housing, and the containing cavity 2 is communicated with the sound outlet channel through the aperture 314 on the conductive mesh 31. Set up the hole 314 that the chamber 2 was acceptd in a plurality of intercommunications on the electrically conductive net 31, the aperture of hole 314 is less than the particle diameter of inhaling the sound powder to make the air current circulated, avoid inhaling the sound powder simultaneously and get into back chamber, play sound passageway or front chamber in. The conductive net 31 may be any one of an iron net, a steel net, a copper net, a silver net and an aluminum-plated silver net, and the conductive net 31 is made of only conductive material, and the specific material is not limited. One end of the conductive net 31 is directly connected to the voice coil, the other end of the conductive net 31 is directly connected to an external circuit, and the external circuit and the voice coil can be electrically connected through the conductive net 31.

In the invention, the containing cavity 2 is formed by the isolation net 3 and the shell in a surrounding way, so that sound-absorbing powder can be filled in the containing cavity 2, and the sound quality of a product is improved; through the electrically conductive net 31 that adopts electrically conductive material for electrically conductive net 31 can communicate voice coil loudspeaker voice coil and external circuit, makes separation net 3 can realize simultaneously inhaling the sound powder sealed and to the electrically conductive function of voice coil loudspeaker voice coil, and the flexible circuit board and/or the cable line of connecting voice coil loudspeaker voice coil and external circuit in the fungible tradition sounder spare save occupation space, increase filling space.

Referring to fig. 4, the number of the conductive nets 31 is plural, and a plurality of the conductive nets 31 are arranged to form the isolation net 3. The number of conductive meshes 31 may be set by those skilled in the art according to the number of circuits to be conducted in the housing. For example: two voice coils connected in parallel are arranged in the housing, and 4 conductive nets 31 may be arranged to be connected to the output and input ends of the two voice coils, respectively.

Further, the gap between two adjacent conductive nets 31 is filled with an insulating sealant 33. In order to avoid the leakage of sound absorption powder, the gaps between the conductive nets 31 are sealed by filling the insulating sealant 33, and meanwhile, the insulating sealing piece can prevent the conduction of the adjacent conductive nets 31. It is of course also possible to connect adjacent conductive webs 31 by insulating seals to increase the structural stability of the spacer web 3.

The isolation net 3 is further provided with filling holes 32 for filling sound-absorbing powder, and the sound generating device 100 further comprises a sealing element for sealing the filling holes 32. When the sound generating device 100 is assembled, the isolation net 3 is connected with the shell, sound-absorbing powder is filled in the accommodating cavity 2 through the filling hole 32, and the filling hole 32 is sealed through a sealing member. The sealing member may be a film attached to the filling hole 32, a solid glue coated on the filling hole 32, or a plug body plugged in the filling hole 32. The material and shape of the sealing member are not limited in the present invention. The filling hole 32 may be specifically formed in one isolation net 3, or through holes may be formed in a plurality of isolation nets 3, and the plurality of through holes are communicated to form one filling hole 32.

In one embodiment, the conductive mesh 31 includes a first terminal 311 for electrically connecting to an external circuit, a second terminal 313 for electrically connecting to the voice coil, and a connection mesh 315 for connecting the first terminal 311 and the second terminal 313, and the sound absorbing powder is filled between the connection mesh 315 and the housing. Pads may be disposed on the first terminal 311 and the second terminal 313, so that the voice coil and the external circuit are electrically connected to the terminals and the connection network 315 by being connected to the pads, and thus electrically connected to each other. The shape and orientation of the first terminal 311 and the second terminal 313 can be set by those skilled in the art according to actual needs, and the first terminal 311 and the second terminal 313 are set to facilitate circuit connection.

In this embodiment, the number of the conductive nets 31 is two, and the second terminals 313 of the two conductive nets 31 are respectively connected to the input end and the output end of the voice coil. The first terminal 311 and the second terminal 313 are respectively connected with two opposite sides of one connecting net 315, current is input from the first terminal 311 of one conductive net 31, is input from the input end of the voice coil through the connecting net 315 and the second terminal 313 of the conductive net 31, and is output through the output end of the voice coil, the second terminal 313 of the other conductive net 31, the connecting net 315 and the first terminal 311, so that a loop is formed, and the circuit conduction of the voice coil is realized.

Referring to fig. 3, the housing includes a lower casing 11, an upper cover 13 covering the lower casing 11, and a mounting wall 15 covering the lower casing 11, the edge of the separation net 3 covers the mounting wall 15, and the mounting wall 15, the lower casing 11, and the separation net 3 enclose the accommodation cavity 2. A sound channel can be formed between the upper cover 13 and the isolation net 3. The mounting retaining wall 15 can be provided with a mounting step 12, and the edge of the separation net 3 is connected with the mounting step 12, so that the separation net 3 is further convenient to mount and fix.

Furthermore, a plurality of notches 14 are formed in the mounting retaining wall 15, and the first terminal 311 and the second terminal 313 respectively penetrate through the notches 14 to be connected with the connection net 315. In order to ensure the sealing performance between the connecting net 315 and the mounting wall 15, the end of the mounting wall 15 far away from the lower shell 11 is in the same plane with the connecting net 315 or higher than the plane of the connecting net 315, and in order to ensure that the first terminal 311 and the second terminal 313 are connected with the connecting net 315 in the same plane, the notch 14 is provided to achieve the above purpose.

Still further, the second terminal 313 includes a first connection portion 3131 extending from the connection net 315 to the sound generating unit 1, a second connection portion 3133 extending from the first connection portion 3131 to the lower shell 11 in a bending manner, and a third connection portion 3135 extending from the first connection portion 3131 in a bending manner, the first connection portion 3131 passes through the notch 14, the second connection portion 3133 is attached to the mounting retaining wall 15, the third connection portion 3135 is attached to the lower shell 11, and the voice coil of the sound generating unit 1 is electrically connected to the third connection portion 3135. Through setting up second connecting portion 3133 with installation barricade 15 laminating sets up, third connecting portion 3135 with the laminating of inferior valve 11 sets up, and installation barricade 15 and inferior valve 11 have certain supporting role to second terminal 313 to avoid second terminal 313 to remove in the casing.

A plurality of support columns 17 are further arranged on the lower shell 11, and the support columns 17 are used for supporting the connecting net 315. Because the isolation net 3 has a certain area, and the isolation net 3 is composed of a plurality of conductive nets 31, the connection area between the conductive net 31 positioned in the middle and the mounting retaining wall 15 is small, and the supporting columns 17 are arranged to prevent the conductive nets 31 from moving or sinking towards the direction close to the lower shell 11 to extrude sound-absorbing powder.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The sound production device is characterized by comprising a shell, a sound production unit, sound absorption powder and a separation net, wherein the sound production unit, the sound absorption powder and the separation net are arranged in the shell, the separation net and the shell are surrounded to form an accommodating cavity, the sound absorption powder is filled in the accommodating cavity, the separation net comprises at least one conductive net, and the conductive net is used for electrically connecting an external circuit and a voice coil of the sound production unit.

2. The sound production device of claim 1, wherein the number of the conductive mesh is plural, and a plurality of the conductive meshes are arranged to form an isolation mesh.

3. The sound production device as claimed in claim 2, wherein a gap between two adjacent conductive meshes is filled with an insulating sealant.

4. The sounding device according to claim 2, wherein the isolation net further comprises a filling hole for filling sound-absorbing powder, and the sounding device further comprises a sealing member for sealing the filling hole.

5. The sound-producing device as claimed in claim 2, wherein the conductive mesh includes a first terminal for electrical connection with an external circuit, a second terminal for electrical connection with the voice coil, and a connecting mesh connecting the first terminal and the second terminal, and the sound-absorbing powder is filled between the connecting mesh and the case.

6. The sound device of claim 5, wherein the number of the conductive mesh is two, and second terminals of the two conductive meshes are respectively connected to an input terminal and an output terminal of the voice coil.

7. The sound-producing device as claimed in claim 5, wherein the housing includes a lower casing, an upper cover covering the lower casing, and a mounting wall covering the lower casing, wherein the edge of the isolating net covers the mounting wall, and the mounting wall, the lower casing and the isolating net define the receiving cavity.

8. The sound-producing device as claimed in claim 7, wherein the mounting wall has a plurality of notches formed therein, and the first terminal and the second terminal are connected to the connecting net through the notches, respectively.

9. The sound production device of claim 8, wherein the second terminal comprises a first connecting portion extending from the connecting net to the sound production unit, a second connecting portion extending from the first connecting portion to the lower case in a bending manner, and a third connecting portion extending from the second connecting portion in a bending manner, the first connecting portion passes through the notch, the second connecting portion is attached to the mounting retaining wall, the third connecting portion is attached to the lower case, and the voice coil of the sound production unit is electrically connected to the third connecting portion.

10. The sound production device of claim 7, wherein a plurality of support posts are also provided on the lower casing for supporting the connecting mesh.

11. The sound production device as claimed in any one of claims 1 to 10, wherein the conductive mesh is provided with a plurality of pores communicating with the housing cavity, and the pore diameter of the pores is smaller than the particle size of the sound absorption powder.

12. The sound production device of any one of claims 1-10, wherein the conductive mesh is any one of an iron mesh, a steel mesh, a copper mesh, a silver mesh, and an aluminum-plated silver mesh.