CN218648901U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a miniature speaker, the power distribution box comprises a box body, the box includes ante-chamber and back chamber, be equipped with the speaker monomer in the ante-chamber, be equipped with the intercommunication on the box back chamber and external windowing and covering the screen cloth of windowing, the volume of back chamber is 0.3cm ³ ～1.0cm ³ The area of the window is 10mm ² ～45mm ² The area of the window is inversely proportional to the volume of the rear cavity, and the mesh number of the mesh cloth is 230-530 meshes/inch. The box body of the micro loudspeaker is provided with a window communicated with the rear cavity, and the area of the window and the volume of the rear cavityThe phase-match to cover the screen cloth in the department of windowing, according to the size of windowing and the air input of the chamber behind the density adjustment of mesh on the screen cloth, and then improve the low frequency performance of speaker, make the consumer obtain better sense of hearing and experience, and can ensure the performance of mobile terminal speaker under the condition of low-voltage, improve consumer's use and experience.

Description

Miniature loudspeaker

Technical Field

The utility model relates to an electroacoustic conversion equipment technical field especially relates to a miniature speaker.

Background

The box body of the miniature loudspeaker adopted in the mobile terminal generally comprises a front cavity and a rear cavity, the front cavity is internally provided with a loudspeaker monomer, the front cavity plays a role in adjusting high-frequency response in the miniature loudspeaker, and the rear cavity plays a role in preventing acoustic short circuit and enhancing low-frequency response.

Along with the development of mobile terminal technique, the full face screen, the fingerprint under the screen, wireless charging and the application of techniques such as many camera modules on mobile terminal, the space of the inside other parts of mobile terminal has been compressed, so that the volume of the back chamber of some miniature speakers at present is constantly compressed, in order to give full play to the free performance of speaker, often can add in the back chamber and inhale sound absorbing material such as sound cotton or BASS powder, and increase and can reduce the Q value of box behind the sound absorbing material, lead to miniature speaker's low frequency performance to reduce, influence consumer's use experience.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a micro speaker having a good low frequency performance is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a micro loudspeaker, includes the box, the box includes front chamber and back chamber, the front chamber is equipped with the speaker monomer, be equipped with the intercommunication on the box back chamber and external windowing and cover the screen cloth of windowing, the volume in back chamber is 0.3cm ³ ～1.0cm ³ The area of the window is 10mm ² ～45mm ² The area of the window is inversely proportional to the volume of the rear cavity, and the mesh number of the mesh cloth is 230-530 meshes/inch.

Further, the shape of the window is round, rectangular or honeycomb.

Furthermore, the mesh cloth is bonded with the box body through glue or in hot-pressing connection.

Furthermore, the box body comprises an upper shell and a lower shell which are matched, the upper shell and the lower shell enclose the front cavity and the rear cavity, and the upper shell is provided with the window.

Furthermore, the lower shell is provided with a sound outlet communicated with the front cavity.

Furthermore, the opening of the sound outlet is covered with a sound outlet mesh.

Further, still be equipped with FPC in the inferior valve, FPC with speaker monomer switches on.

Furthermore, sound absorption materials are filled in the rear cavity.

The beneficial effects of the utility model reside in that: set up the windowing with the back chamber intercommunication on micro speaker's box, the area of windowing matches with the volume in back chamber to cover the screen cloth in the department of windowing, according to the air input in the density adjustment back chamber of mesh on the size of windowing and the screen cloth, and then improve the low frequency performance of speaker, make the consumer obtain better sense of hearing and experience, and can ensure the performance of mobile terminal speaker under the condition of low-voltage, improve consumer's use and experience.

Drawings

Fig. 1 is a partial exploded view of a micro-speaker according to a first embodiment of the present invention;

fig. 2 is an exploded view of a micro-speaker according to a first embodiment of the present invention.

Description of the reference symbols:

1. a box body; 2. a front cavity; 3. a rear cavity; 4. a speaker unit; 5. an upper shell; 51. windowing; 52. mesh cloth; 6. a lower case; 61. a sound outlet; 62. mesh cloth at the sound outlet; 7. and (3) FPC.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 and 2, a micro speaker includes a box body 1, the box body 1 includes a front cavity 2 and a rear cavity 3, a speaker unit 4 is disposed in the front cavity 2, a window 51 communicating the rear cavity 3 with the outside and a mesh 52 covering the window 51 are disposed on the box body 1, and the volume of the rear cavity 3 is 0.3cm ³ ～1.0cm ³ The area of the window 51 is 10mm ² ～45mm ² The area of the open window 51 is inversely proportional to the volume of the rear cavity 3, and the mesh number of the mesh cloth 52 is 230-530 meshes/inch.

The utility model discloses a structure principle brief follows as follows: the method comprises the steps that a window 51 communicated with a rear cavity 3 is arranged on a box body 1 of the micro-speaker, the area of the window 51 is matched with the volume of the rear cavity 3, a mesh cloth 52 covers the window 51, the air inflow of the rear cavity 3 is adjusted according to the size of the window 51 and the density of meshes on the mesh cloth 52, the smaller the area of the window 51 is, the smaller the rise of the low-frequency sensitivity of the micro-speaker is, the larger the area of the window 51 is, the more obvious the rise of the low-frequency sensitivity of the micro-speaker is, the larger the density of the meshes is, the smaller the rise of the sensitivity of the micro-speaker is, the smaller the density of the meshes is, the more obvious the rise of the low-frequency sensitivity of the micro-speaker is, the size of the window 51 determines the whole low-frequency sensitivity performance of the micro-speaker, and fine adjustment is carried out by adjusting the density of the meshes on the mesh cloth 52, so that the micro-speaker obtains the best low-frequency performance.

From the above description, the beneficial effects of the present invention are: by adjusting the area of the windowing 51 and finely adjusting the density of meshes on the mesh cloth 52 covering the windowing 51, the low-frequency sensitivity of the micro-speaker is adjusted, so that the micro-speaker obtains the best low-frequency performance, a consumer obtains good hearing experience, the performance of the speaker of the mobile terminal under the condition of low voltage can be guaranteed, and the use experience of the consumer is improved.

Further, the shape of the open window 51 is round, rectangular or honeycomb.

As can be seen from the above description, the shape of the open window 51 can be set as required, so as to ensure that the open window 51 has a certain area and is adapted to the shape of the box body 1.

Further, the mesh cloth 52 is bonded with the box body 1 through glue or hot-pressed.

As can be seen from the above description, the mesh 52 is mounted on the cabinet 1 by gluing or hot pressing, so that the mesh 52 is tightly connected with the cabinet 1 and is not easy to fall off, and the micro-speaker is convenient to assemble.

Furthermore, box 1 includes matched with epitheca 5 and inferior valve 6, epitheca 5 with inferior valve 6 encloses become the antetheca 2 with back chamber 3, be equipped with on the epitheca 5 windowing 51.

As can be seen from the above description, the cabinet 1 is divided into the upper shell 5 and the lower shell 6 which are matched with each other, so as to facilitate installation of other components such as the speaker unit 4 and the like in the cabinet 1, and facilitate assembly of the micro-speaker.

Further, the lower shell 6 is provided with a sound outlet 61 communicated with the front cavity 2.

Further, the opening of the sound outlet 61 is covered with a sound outlet mesh 62.

As can be seen from the above description, the lower shell 6 is provided with the sound outlet 61 for the sound emitted by the speaker unit 4 to come out, and the opening of the sound outlet 61 covers the sound outlet mesh 62, so as to prevent dust from entering the micro speaker and affecting the normal operation of the speaker unit 4.

Further, an FPC7 is further arranged in the lower shell 6, and the FPC7 is conducted with the loudspeaker single body 4.

As can be seen from the above description, the FPC7 which is conducted with the speaker unit 4 is arranged in the lower shell 6, so that the connection of the micro speaker and external electronic components is facilitated, and the speaker unit 4 is normally connected.

Further, the rear cavity 3 is filled with sound-absorbing material.

As can be seen from the above description, the filling of the sound-absorbing material in the rear cavity 3 can further improve the performance of the micro-speaker.

Example one

Referring to fig. 1 and fig. 2, a first embodiment of the present invention is: a micro loudspeaker comprises a box body 1, wherein the box body 1 comprises an upper shell 5 and a lower shell 6 which are matched, the upper shell 5 and the lower shell 6 enclose a front cavity 2 and a rear cavity 3, and a loudspeaker monomer 4 is arranged in the front cavity 2.

As shown in fig. 1, be equipped with on the epitheca 5 communicate external with the 51 of windowing of back chamber 3, the area of windowing 51 with the volume looks adaptation of back chamber 3, it can be circular, oval, rectangle or honeycombed etc. to open window 51, the shape of windowing 51 reaches it sets up as required to window 51 with interval between the speaker monomer 4, makes it has certain area and with to open window 51 the shape of epitheca 5 suits can, still be equipped with the cover on the epitheca 5 the screen cloth 52 of back chamber 3, the shape and the size of screen cloth 52 with it cooperatees to open window 51, be equipped with intensive mesh on the screen cloth 52, air in the external environment passes through the mesh gets into in the back chamber 3. The utility model provides a micro loudspeaker is through the adjustment the size of windowing 51 reaches the density adjustment of mesh the air input of back chamber 3 makes the air with back chamber 3 fully functions is in order to improve micro loudspeaker's low frequency performance, wherein the size of windowing 51 has decided the holistic low frequency sensitivity performance of micro loudspeaker, the area of windowing 51 is less, micro loudspeaker's low frequency sensitivity rises less, the area of windowing 51 is big more, micro loudspeaker's low frequency sensitivity rises more obviously, and the density of mesh is big more, micro loudspeaker's sensitivity rises less, the density of mesh is less, micro loudspeaker's low frequency sensitivity rises more obviously, sets up reasonable area windowing 51 and adjustment the density of mesh is finely tuned on the screen cloth 52 to make micro loudspeaker obtain the best low frequency performance, make the user obtain better sense of hearing experience, guaranteed simultaneously mobile terminal under the condition of low-voltage micro loudspeaker's performance. Preferably, the back chamber 3 intussuseption is filled with and inhales sound absorbing material such as sound cotton or BASS powder, gets into the air current and the sound absorbing material full play of back chamber 3 further promotes micro-speaker's performance improves user's use experience.

In the present embodiment, the volume of the back chamber 3 is 0.3cm ³ ～1.0cm ³ The area of the window 51 is 10mm ² ～45mm ² The area of the opening window 51 is inversely proportional to the volume of the rear cavity 3, the mesh number of the mesh cloth 52 is 230 to 530 meshes/inch, optionally, the meshes can be round holes, elliptical holes or rhombic holes and the like, and when the meshes are round holes, the aperture of the meshes is 22 to 41 microns.

Preferably, the mesh 52 is bonded or thermally pressed to the upper case 5 by glue, so as to ensure that the mesh 52 is tightly connected to the upper case 5, prevent air from entering the rear cavity 3 from a gap between the mesh 52 and the upper case 5, and facilitate the assembly of the micro-speaker.

As shown in fig. 2, the lower shell 6 is provided with a sound outlet 61 communicated with the front cavity 2, sound generated by the speaker unit 4 is transmitted out of the box body 1 through the sound outlet 61, a sound outlet mesh 62 covering the sound outlet 61 is further arranged at an opening of the sound outlet 61, and the sound outlet mesh 62 plays a role in isolating impurities such as dust in the external environment, so that the dust is prevented from entering the micro speaker to affect normal operation of the speaker unit 4. Still be equipped with in inferior valve 6 with the FPC7 that speaker monomer 4 switched on, FPC7 is connected in order to switch on with outside electronic components speaker monomer 4. Preferably, the upper case 5 is engaged with the lower case 6, so that the speaker unit 4 and the FPC7 are installed in the micro-speaker, and then the upper case 5 is connected to the lower case 6, thereby improving the assembly efficiency of the micro-speaker.

To sum up, the utility model provides a micro loudspeaker makes micro loudspeaker obtain the best low frequency performance through the density of mesh on the area that the adjustment was windowed and the screen cloth, for the user provides better sense of hearing and experiences, has guaranteed micro loudspeaker normal work under the low-voltage simultaneously, has improved user's use and has experienced.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims (8)

1. The utility model provides a miniature speaker, includes the box, the box includes front chamber and back chamber, be equipped with speaker monomer, its characterized in that in the front chamber: the box body is provided with a window for communicating the rear cavity with the outside and a mesh cloth for covering the window, and the volume of the rear cavity is 0.3cm ³ ～1.0cm ³ The area of the window is 10mm ² ～45mm ² The area of the window is inversely proportional to the volume of the rear cavity, and the mesh number of the mesh cloth is 230-530 meshes/inch.

2. The micro-speaker of claim 1, wherein: the shape of the window is round, rectangular or honeycomb.

3. The micro-speaker of claim 1, wherein: the mesh cloth is bonded with the box body through glue or connected in a hot pressing mode.

4. The micro-speaker of claim 1, wherein: the box body comprises an upper shell and a lower shell which are matched, the upper shell and the lower shell enclose the front cavity and the rear cavity, and the upper shell is provided with the window.

5. The micro-speaker of claim 4, wherein: and the lower shell is provided with a sound outlet communicated with the front cavity.

6. The micro-speaker of claim 5, wherein: the opening of the sound outlet is covered with sound outlet mesh.

7. The micro-speaker of claim 4, wherein: still be equipped with FPC in the inferior valve, FPC with speaker monomer switches on.

8. The micro-speaker of claim 1, wherein: and the rear cavity is filled with sound absorption materials.

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