CN210609589U

CN210609589U - Sound production device and electronic equipment

Info

Publication number: CN210609589U
Application number: CN201922495931.4U
Authority: CN
Inventors: 牛家鹏; 孙志军; 牟宗君
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-22
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a sound generating mechanism and electronic equipment, wherein, sound generating mechanism includes: the sound-absorbing device comprises a shell, a front sound cavity and a rear sound cavity, wherein the front sound cavity and the rear sound cavity are respectively arranged on two opposite sides of the shell; the loudspeaker single body is fixed on the shell, and the sound outlet end of the loudspeaker single body is communicated with the front sound cavity; the shell is provided with a leakage structure, and the leakage structure comprises a resistance silencing cavity separated from the back silencing cavity, a first leakage hole communicated with the back silencing cavity and the resistance silencing cavity, and a second leakage hole communicated with the resistance silencing cavity and the front silencing cavity. The technical scheme of the utility model the air current disturbance noise that reveals structure department on the reduction sound generating mechanism improves the symmetry of product vibration displacement to improve the acoustic performance of product.

Description

Sound production device and electronic equipment

Technical Field

The utility model relates to an electroacoustic equipment technical field, in particular to sound generating mechanism and electronic equipment.

Background

For a common sound generating device, the common sound generating device generally includes a housing and a speaker unit disposed in the housing, where a front sound cavity and a rear sound cavity are disposed on opposite sides of the housing. The housing is also typically provided with a vent to communicate the rear and front acoustic chambers. However, the leakage holes may generate airflow disturbance noise to affect the symmetry of the product vibration displacement, thereby causing the user to be unable to satisfy the stability of the product acoustic performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sound generating mechanism aims at reducing the last air current disturbance noise of revealing structure department of sound generating mechanism, improves the symmetry of product vibration displacement to improve the acoustic performance of product.

In order to achieve the above object, the utility model provides a sound generating device includes:

the sound-absorbing device comprises a shell, a front sound cavity and a rear sound cavity, wherein the front sound cavity and the rear sound cavity are respectively arranged on two opposite sides of the shell; and

the loudspeaker single body is fixed on the shell, and the sound outlet end of the loudspeaker single body is communicated with the front sound cavity;

the shell is provided with a leakage structure, and the leakage structure comprises a resistance silencing cavity separated from the back silencing cavity, a first leakage hole communicated with the back silencing cavity and the resistance silencing cavity, and a second leakage hole communicated with the resistance silencing cavity and the front silencing cavity.

Optionally, a damping mesh is covered at the first leakage hole and/or the second leakage hole.

Optionally, the damping mesh is located within the resistant sound damping cavity.

Optionally, the casing has the first surface towards the back sound chamber, the casing is equipped with the second leaks the hole, the first surface is equipped with the ring-shaped chamber spare that the hole periphery was leaked to the ring-shaped chamber spare, keeping away from of ring-shaped chamber spare the one end of casing is equipped with the chamber lid, the resistance muffling chamber does the inner chamber of ring-shaped chamber spare, be equipped with on the chamber lid first leaks the hole.

Optionally, the casing has the second surface towards preceding sound chamber, the casing is equipped with first leakage hole, the second surface is equipped with the ring-shaped cavity spare of locating first leakage hole periphery, keeping away from of ring-shaped cavity spare the one end of casing is equipped with the chamber lid, the resistance noise elimination chamber is the inner chamber of ring-shaped cavity spare, be equipped with on the chamber lid the second leakage hole.

Optionally, the annular cavity member is bonded to the housing; and/or the cavity cover is bonded with the annular cavity body.

Optionally, the cavity cover is provided as a first back glue piece; and/or the annular cavity part is set as a second back glue part.

Optionally, the casing has towards the first surface in back sound chamber, the casing orientation the protruding shaping of establishing in preceding sound chamber has relatively the heavy groove of resistance noise elimination that establishes in first surface, the tank bottom in the heavy groove of resistance noise elimination is equipped with the second leaks the hole, the inner chamber in the heavy groove of resistance noise elimination does the resistance noise elimination chamber, the notch in the heavy groove of resistance noise elimination is equipped with the chamber lid, be equipped with on the chamber lid first leaks the hole.

Optionally, the casing has towards the second surface in preceding sound chamber, the casing orientation the protruding shaping of establishing in back sound chamber has relatively the heavy groove of resistance noise elimination that establishes in second surface, the tank bottom in the heavy groove of resistance noise elimination is equipped with first leakage hole, the inner chamber in the heavy groove of resistance noise elimination does resistance noise elimination chamber, the notch in the heavy groove of resistance noise elimination is equipped with the chamber lid, be equipped with on the chamber lid the second leakage hole.

The utility model also provides an electronic equipment, including aforementioned sound generating mechanism.

The technical scheme of the utility model in add the resistance chamber of eliminating the noise, the air current passes first leakage hole from the back chamber of eliminating the noise and gets into the resistance chamber of eliminating the noise, and the resistance chamber of eliminating the noise is again followed the second and is revealed the hole department and discharge the preceding chamber of eliminating the noise. In the process of airflow flowing, the airflow passes through the first leakage hole from the rear sound cavity to be the first cross section mutation, and flows through the reactive silencing cavity, and then flows out through the second leakage hole to be the second cross section mutation, namely, the whole flowing process of the airflow is the reactive silencing process of the pipeline cross section mutation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 structural view of an embodiment of the sound generating device of the present invention;

fig. 2 is a schematic structural view of another embodiment of the sound generating device of the present invention;

fig. 3 is a schematic structural view of another embodiment of the sound generating device of the present invention;

fig. 4 is a schematic structural view of another embodiment of the sound generating apparatus of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Shell body	101	Rear acoustic cavity
103	Reactive silencing sink	20	Leakage structure
				201	Resistant anechoic chamber	202	First leakage hole
203	Second leakage hole	21	Cavity cover
				22	Annular cavity member	23	First gum piece
24	Second gum piece	30	Damping screen cloth
				102	Front acoustic cavity	11	First surface
12	Second surface

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sound production device.

Referring to fig. 1, in an embodiment of the present invention, the sound generating apparatus includes:

a shell 10, wherein a front sound cavity 102 and a rear sound cavity 101 are respectively arranged at two opposite sides of the shell 10; and

a speaker unit (not shown) fixed to the housing 10 and having a sound output end communicating with the front sound chamber 102;

the casing 10 is provided with a leakage structure 20, and the leakage structure 20 includes a reactive muffling chamber 201 separated from the rear sound chamber 101, a first leakage hole 202 communicating the rear sound chamber 101 and the reactive muffling chamber 201, and a second leakage hole 203 communicating the reactive muffling chamber 201 and the front sound chamber 102.

In this embodiment, generally, the sound generating device is mounted on an electronic device such as a mobile phone or a tablet computer. The device housing of these electronic devices usually has a mounting cavity corresponding to the sound generating device, and after the sound generating device is assembled into the mounting cavity, the housing 10 and the speaker unit divide the mounting cavity into the front sound cavity 102 and the rear sound cavity 101.

The technical scheme of the utility model in add resistant anechoic chamber 201, the air current passes first leakage hole 202 from back anechoic chamber 101 and gets into resistant anechoic chamber 201, discharges preceding anechoic chamber 102 from second leakage hole 203 again through resistant anechoic chamber 201. In the flowing process of the air flow, the air flow passes through the first leakage hole 202 from the rear sound cavity 101 to have a first cross section mutation, and flows out through the second leakage hole 203 to have a second cross section mutation after flowing through the reactive muffling cavity 201, that is, the whole flowing process of the air flow is a reactive muffling process with a sudden pipe cross section mutation, the reactive muffling cavity 201 in the working process is connected with the rear sound cavity 101 and the front sound cavity 102 to form a reactive muffler with a sudden section mutation, and the formed reactive muffler can filter the air flow disturbance noise, so that the problem of asymmetric product vibration displacement is solved, the environmental noise of the product caused by the air flow disturbance is reduced, and the acoustic performance of the product is improved.

Further, the damping mesh 30 is covered at the first leakage holes 202 and/or the second leakage holes 203. In the technical scheme, due to the addition of the damping mesh cloth 30, the formed reactive muffler can also play a role in adjusting the damping characteristic of the rear sound cavity 101, so that the airflow disturbance noise can be effectively reduced even if the volume of the reactive muffler cavity 201 is small. It will be appreciated that the sound generating device, and particularly the miniature sound generating device, is limited in space and that a smaller resistive muffling chamber 201 is more advantageous for product implementation.

Further, a damping mesh 30 is located within the resistant muffling chamber 201. It can be understood that the space for installing the sound generating device on the electronic device is usually smaller, and the damping mesh 30 is disposed in the resistant muffling cavity 201, so that the occupation of the damping mesh 30 on the external space of the sound generating device on the electronic device can be avoided. It should be noted that, in the present invention, the total thickness of the damping mesh 30 is smaller than the thickness of the resistant muffling cavity 201, so as to ensure that the resistant muffling cavity 201 has enough space to filter the air flow disturbance noise.

Referring to fig. 1, in the present embodiment, further, the housing 10 has a first surface 11 facing the rear acoustic cavity 101 and a second surface 12 facing the front acoustic cavity 102, the housing 10 is provided with the second leakage hole 203, the first surface 11 of the housing 10 is provided with an annular cavity member 22 annularly disposed on the periphery of the second leakage hole 203, one end of the annular cavity member 22 away from the housing 10 is provided with a cavity cover 21, the reactive muffling cavity 201 is an inner cavity of the annular cavity member 22, and the cavity cover 21 is provided with the first leakage hole 202. This embodiment forms the resistant muffling chamber 201 by adding an annular chamber member 22. It will be appreciated that the annular cavity member 22 is a separate component from the housing 10, which may be conveniently formed, on the one hand, and may be, but is not limited to, injection molded parts, die cast parts, cut parts, etc.; on the other hand, the annular cavity member 22 may be made of more materials, which may be more inexpensive than the material of the housing 10, and/or more favorable for noise damping (such as, but not limited to, sound absorbing material).

However, the design is not limited to this, referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the sound generating apparatus of the present invention, in this another embodiment, the first leakage hole 202 may also be opened on the casing 10, the annular cavity member 22 is arranged on the second surface 12 of the casing 10 and is annularly arranged on the periphery of the first leakage hole 202, the resistant muffling cavity 201 is an inner cavity of the annular cavity member 22, and the second leakage hole is arranged on the cavity cover 21 arranged at one end of the annular cavity member 22 away from the casing 10; obviously, in this alternative embodiment, the resistant muffling chamber 201 is also formed by adding an annular chamber element 22.

Further, the annular cavity member 22 is bonded to the housing 10; and/or the cavity cover 21 is bonded with the annular cavity member 22. It can be understood that the bonding connection mode is easy to operate and implement, and is beneficial to improving the assembly convenience among related components. Generally, the related components may be bonded to each other by a double-sided tape, an adhesive tape, or the like. However, the design is not limited thereto, and in other embodiments, the annular cavity member 22 and the housing 10, and the cavity cover 21 and the annular cavity member 22 may be connected by, but not limited to, fusion and lamination; of course, in other embodiments, the annular cavity member 22 and the cavity cover 21 may be integrally formed.

Further, the cavity cover 21 is provided as a first backing rubber 23; and/or the annular cavity member 22 is provided as a second backing member 24. Wherein, the second back glue piece 24 adopts double-sided back glue; the first backing member 23 may be a single-sided backing, or may be a double-sided backing, particularly when the damping mesh 30 is disposed on a side of the first backing member 23 away from the resistant muffling chamber 201. It can be understood that the back adhesive piece is adhesive from the area, need not additionally to scribble and establishes the stickness and glue, can save to scribble the relevant production processes who establishes the stickness and glue, simplifies the production procedure of product, improves the production efficiency of product. Referring to fig. 1 and 2, a damping mesh 30 is covered at the leakage hole on the first back glue piece 23; the first back glue piece 23 has certain rigidity and strength, and can play a role in supporting the damping mesh cloth 30, and in addition, the first back glue piece 23 has adhesive property, and the damping mesh cloth 30 can be directly adhered to the first back glue piece.

In the technical solutions of fig. 1 and 2, the resistant muffling cavity 201 is formed by adding the annular cavity member 22, but the design is not limited thereto, and in other embodiments, the resistant muffling cavity 201 may be formed by directly and integrally forming on the housing 10.

For example, referring to fig. 3, fig. 3 is a schematic structural diagram of a sound generating device according to another embodiment of the present invention; in this further embodiment, the housing 10 is convexly formed toward the front sound cavity 102 with a resistant sound attenuation sinking groove 103 sunk with respect to the first surface 11 of the housing 10, the groove bottom of the resistant sound attenuation sinking groove 103 is provided with the second leakage hole 203, the inner cavity of the resistant sound attenuation sinking groove 103 is the resistant sound attenuation cavity 201, the notch of the resistant sound attenuation sinking groove 103 is provided with a cavity cover 21, and the cavity cover 21 is provided with the first leakage hole 202. In this further embodiment, the housing 10 is a thin-walled housing, the depth of the reactive muffling sinker 103 is greater than the thickness of the housing 10, and the reactive muffling sinker 103 is formed by protruding the wall of the housing 10 toward the front sound chamber 102. Of course, in other embodiments, in the case that the wall of the housing 10 is sufficiently thick, the groove depth of the reactive sound-damping counter sink 103 is smaller than the thickness of the housing 10, in which case the wall of the housing 10 does not need to be raised toward the front sound cavity 102, and the reactive sound-damping sink 103 may be formed on the first surface 11 of the housing 10 by milling or digging a groove or the like. Of course, the housing 10 may also be an injection molded part, with the reactive noise sink 103 being injection molded directly onto the first surface 11 of the housing 10.

For another example, referring to fig. 4, fig. 4 is a schematic structural diagram of another embodiment of the sound generating device of the present invention; in this further embodiment, the reactive sound attenuation sinking groove 103 may also be a sinking groove formed by protruding the housing 10 toward the rear sound cavity 101 and sinking relative to the second surface 12 of the housing 10, the bottom of the reactive sound attenuation sinking groove 103 is provided with the first leakage hole 202, the inner cavity of the reactive sound attenuation sinking groove 103 is the reactive sound attenuation cavity 201, the notch of the reactive sound attenuation sinking groove 103 is provided with the cavity cover 21, and the cavity cover 21 is provided with the second leakage hole 203. Similarly, in this further embodiment, when the housing 10 is a thin-walled housing and the depth of the reactive sound-damping sinker 103 is greater than the thickness of the housing 10, the reactive sound-damping sinker 103 is formed by bulging the housing wall of the housing 10 toward the rear sound chamber 101.

The utility model discloses still provide an electronic equipment, this electronic equipment includes sound generating mechanism, and this sound generating mechanism's concrete structure refers to above-mentioned embodiment, because this electronic equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound generating device, comprising:

2. The sound generating apparatus of claim 1, wherein the first and/or second vent holes are covered with a damping mesh.

3. The sound-emitting device of claim 2, wherein the damping mesh is located within the resistive muffler chamber.

4. The sound generating apparatus as claimed in claim 1, wherein the casing has a first surface facing the rear sound cavity, the casing is provided with the second leakage hole, the first surface is provided with an annular cavity member surrounding the second leakage hole, an end of the annular cavity member away from the casing is provided with a cavity cover, the resistive sound-deadening cavity is an inner cavity of the annular cavity member, and the cavity cover is provided with the first leakage hole.

5. The sound generating apparatus as claimed in claim 1, wherein the casing has a second surface facing the front sound cavity, the casing is provided with the first leakage hole, the second surface is provided with an annular cavity member surrounding the first leakage hole, an end of the annular cavity member away from the casing is provided with a cavity cover, the resistive sound-deadening cavity is an inner cavity of the annular cavity member, and the cavity cover is provided with the second leakage hole.

6. The sound generating apparatus of claim 4 or 5 wherein said annular chamber member is bonded to said housing; and/or the cavity cover is bonded with the annular cavity body.

7. The sound generating apparatus of claim 6, wherein said chamber cover is provided as a first backing member; and/or the annular cavity part is set as a second back glue part.

8. The sound generating apparatus as claimed in claim 1, wherein the housing has a first surface facing the rear sound cavity, the housing is convexly formed with a reactive muffling sinking groove sinking relative to the first surface toward the front sound cavity, the second leakage hole is formed at a bottom of the reactive muffling sinking groove, the reactive muffling sinking groove has an inner cavity as the reactive muffling cavity, a notch of the reactive muffling sinking groove is provided with a cavity cover, and the first leakage hole is formed on the cavity cover.

9. The sound generating apparatus as claimed in claim 1, wherein the housing has a second surface facing the front sound cavity, the housing is convexly formed with a reactive muffling sinking groove sinking relative to the second surface toward the rear sound cavity, the bottom of the reactive muffling sinking groove is provided with the first leakage hole, the inner cavity of the reactive muffling sinking groove is the reactive muffling cavity, the notch of the reactive muffling sinking groove is provided with a cavity cover, and the cavity cover is provided with the second leakage hole.

10. An electronic device characterized by comprising the sound emitting apparatus according to any one of claims 1 to 9.