Microphone and electronic equipment

Abstract

The invention provides a microphone and electronic equipment. The microphone comprises a first housing; the second shell is connected with the first shell, an inner cavity is formed between the second shell and the first shell, the inner cavity is communicated with the outside through a first sound hole, a groove is formed in the side, away from the inner cavity, of the second shell, and the groove is communicated with the first sound hole; the waterproof membrane assembly is arranged in the inner cavity, and the waterproof membrane assembly is arranged opposite to the first sound hole; and the dustproof net is arranged in the groove. The waterproof performance of the microphone can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of microphones, and more specifically, to a microphone and an electronic device. Background Art

[0002] With the development of intelligent vehicles, microphones are gradually being placed on the outside of vehicles. However, when the vehicle is driving, the external water flow will generate a large impact force, which will easily damage the waterproof membrane of the microphone when the water flow directly hits the microphone, thus seriously affecting the waterproof performance of the microphone.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the invention

[0004] An object of the present invention is to provide a new technical solution for a microphone and an electronic device.

[0005] According to a first aspect of the present invention, a microphone is provided, wherein the microphone comprises:

[0006] a first shell;

[0007] a second shell, the second shell being connected to the first shell, an inner chamber being formed between the second shell and the first shell, the inner chamber being connected to the outside through a first sound hole, a groove being provided on a side of the second shell facing away from the inner chamber, the groove being connected to the first sound hole;

[0008] A waterproof membrane assembly, wherein the waterproof membrane assembly is disposed in the inner chamber, and the waterproof membrane assembly is disposed opposite to the first sound hole;

[0009] A dustproof net is arranged in the groove.

[0010] Optionally, a third shell is further included, which is arranged on a side of the second shell facing away from the first shell, and the orthographic projection of the third shell toward the first shell covers the orthographic projection of the second shell toward the first shell.

[0011] Optionally, the third shell includes a second sound hole, a plurality of the second sound holes are provided, and the plurality of the second sound holes are staggered with the first sound hole.

[0012] Optionally, a sealing ring is further included, and the sealing ring is arranged between the second shell and the third shell.

[0013] Optionally, it further comprises a substrate, the substrate is arranged in the inner chamber, and the substrate comprises a third sound hole;

[0014] The waterproof membrane assembly includes a supporting portion and a waterproof membrane, one end of the supporting portion is connected to the second shell, and the other end of the supporting portion is connected to the substrate, a accommodating cavity is formed between the supporting portion, the second shell and the substrate, and the waterproof membrane can separate the accommodating cavity into a first chamber connected to the first sound hole and a second chamber connected to the third sound hole.

[0015] Optionally, a MEMS chip is further included, wherein the MEMS chip is arranged on a side of the substrate away from the waterproof membrane assembly, and the MEMS chip is arranged opposite to the third sound hole.

[0016] Optionally, a support member is further included, one end of the support member abuts against the first shell, and the other end of the support member abuts against the substrate.

[0017] Optionally, the waterproof membrane is made of ePTFE.

[0018] Optionally, the support portion is made of foam.

[0019] According to a second aspect of the present invention, there is provided an electronic device, comprising a microphone as described in any one of the first aspects.

[0020] The microphone in the embodiment of the present application has a groove arranged on the second housing so that the dustproof net is arranged in the groove, so that when the water flow hits the microphone, the impact force of the water flow can be effectively reduced. Moreover, the groove is connected to the first sound hole so that the waterproof membrane assembly is located on the inner side of the dustproof net, thereby further improving the waterproof performance of the microphone.

[0021] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0023] Figure 1 is a cross-sectional view of a microphone according to an embodiment of the present invention.

[0024] Figure 2 is an exploded view of a microphone in one embodiment of the present invention.

[0025] Figure 3 Schematic diagram of the structure of a microphone in one embodiment of the present invention.

[0026] Figure 4 is an assembly diagram of a microphone in one embodiment of the present invention.

[0027] Figure 5 is an assembly diagram of a microphone in another embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. A first shell;

[0030] 2. second shell; 201. first sound hole; 202. groove;

[0031] 3. Inner chamber;

[0032] 4. Waterproof membrane assembly; 401. Supporting part; 402. Waterproof membrane;

[0033] 5. Dust-proof net;

[0034] 6. third shell; 601. second sound hole;

[0035] 7. Sealing ring;

[0036] 8. substrate; 801. third sound hole;

[0037] 9. MEMS chip;

[0038] 10. Supporting parts;

[0039] 11. Accommodating chamber; 1101. First chamber; 1102. Second chamber. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0041] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0042] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] According to one embodiment of the present application, a microphone is provided, which includes a first shell 1, a second shell 2, a waterproof membrane assembly 4 and a dustproof net 5, the second shell 2 is connected to the first shell 1, an inner chamber 3 is formed between the second shell 2 and the first shell 1, the inner chamber 3 is connected to the outside through a first sound hole 201, and a groove 202 is provided on the side of the second shell 2 facing away from the inner chamber 3, and the groove 202 is connected to the first sound hole 201; the waterproof membrane assembly 4 is arranged in the inner chamber 3, and the waterproof membrane assembly 4 is arranged opposite to the first sound hole 201; the dustproof net 5 is arranged in the groove 202.

[0044] Specifically, Figure 1 As shown, the microphone of the embodiment of the present application includes a first shell 1 and a second shell 2, wherein the first shell 1 is a shell with an opening, and the second shell 2 is a plate-like structure that can close the opening of the first shell 1. The second shell 2 can be formed into an integral structure with the first shell 1 by welding, bonding, screwing or riveting, so as to form an inner chamber 3 between the second shell 2 and the first shell 1. The inner chamber 3 can be fixed with electronic components such as MEMS (Micro Electro Mechanical Systemwe, micro electromechanical system) chips, ASIC (Application Specific Integrated Circuit, integrated circuit) chips, integrated circuits, connectors and processors, and multiple electronic components are connected to each other to form the circuit of the microphone. A first sound hole 201 is provided on the second shell 2, and the first sound hole 201 passes through the second shell 2, and the first sound hole 201 can connect the inner chamber 3 with the outside. A groove 202 is also provided on the side of the second shell 2 away from the inner chamber 3, and the groove 202 is connected to the first sound hole 201.

[0045] The microphone further includes a waterproof membrane assembly 4 and a dustproof net 5. The waterproof membrane assembly 4 is disposed in the inner chamber 3, and the waterproof membrane assembly 4 is disposed opposite to the first sound hole 201, so that when external water flows into the inner chamber 3 through the first sound hole 201, the waterproof membrane assembly 4 can isolate the water flow to prevent the water flow from damaging the various electronic components in the inner chamber 3, thereby effectively improving the waterproof performance of the microphone. The dustproof net 5 is disposed in the groove 202, so that tiny particles such as dust and wood chips in the air can be isolated from the outside of the microphone, thereby effectively improving the dustproof effect of the microphone.

[0046] Among them, since the dustproof net 5 can be set in the groove 202 on the side of the second shell 2 away from the inner chamber 3, when the external water flow hits the microphone, the second shell 2 can prevent the water flow from directly hitting the dustproof net 5 located in the groove 202, thereby effectively weakening the impact force of the water flow. In addition, since the groove 202 is also connected to the first sound hole 201, when the water flow hits the dustproof net 5 through the second shell 2, the dustproof net 5 can further weaken the impact force of the water flow, so that the impact force of the water flow entering the inner chamber 3 through the first sound hole 201 is greatly reduced, thereby further improving the waterproof performance of the microphone.

[0047] In addition, in the embodiment of the present application, the material of the first shell 1 can be metal, plastic, rubber, wood, glass, carbon fiber or a composite material, etc., and the material of the second shell 2 can be metal, plastic, rubber, wood, glass, carbon fiber or a composite material, etc. Technical personnel in this field can choose according to actual needs, and this application does not make any specific restrictions here.

[0048] In one embodiment, the microphone further includes a third shell 6 , which is disposed on a side of the second shell 2 facing away from the first shell 1 , and an orthographic projection of the third shell 6 toward the first shell 1 covers an orthographic projection of the second shell 2 toward the first shell 1 .

[0049] Specifically, Figure 1 , Figures 3 to 5 As shown, the microphone described in the embodiment of the present application includes a third shell 6, and the third shell 6 can be connected to the side of the second shell 2 facing away from the first shell 1 by welding, bonding, screwing or riveting, and the orthographic projection of the third shell 6 toward the first shell 1 covers the orthographic projection of the second shell 2 toward the first shell 1.

[0050] Thus, when external water flow hits the microphone, the third shell 6 can first weaken the impact force of the water flow, and then weaken the impact force of the water flow through the second shell 2, so that when the water flow hits the dustproof net 5, the impact force of the water flow is greatly weakened, thereby effectively improving the stability and reliability of the dustproof net 5.

[0051] The third shell 6 is provided with a through hole that penetrates the third shell 6, so that the external airflow can enter the inner chamber 3 through the through hole. The through hole can be circular, square or other irregular shapes, as long as the external airflow can pass through. In addition, the through hole can also be provided with one, two or more, and those skilled in the art can select according to actual needs, and this application does not make any specific restrictions here.

[0052] In addition, the material of the third shell 6 described in the embodiment of the present application can be metal, plastic, rubber, wood, glass, carbon fiber or composite material, etc. Those skilled in the art can choose according to actual needs, and the present application does not make any specific restrictions here.

[0053] In one embodiment, the third shell 6 includes a second sound hole 601 , and a plurality of the second sound holes 601 are provided, and the plurality of the second sound holes 601 are alternately arranged with the first sound hole 201 .

[0054] Specifically, Figures 3 to 5 As shown, the through hole in the embodiment of the present application is a second sound hole 601, so that the external airflow can enter the inner chamber 3 through the second sound hole 601 and the first sound hole 201 in sequence. There are multiple second sound holes 601, and the multiple second sound holes 601 and the first sound holes 201 are staggered.

[0055] Therefore, when external water flow hits the microphone, since the multiple second sound holes 601 and the first sound holes 201 are staggered, the water flow will not directly hit the first sound hole 201 located on the second shell 2 after passing through the second sound holes 601 on the third shell 6, thereby effectively weakening the impact force of the water flow.

[0056] In one embodiment, the microphone further includes a sealing ring 7 , and the sealing ring 7 is disposed between the second shell 2 and the third shell 6 .

[0057] Specifically, Figure 2 and Figure 4 As shown, the embodiment of the present application arranges the sealing ring 7 between the second shell 2 and the third shell 6, which, on the one hand, avoids the leakage of external airflow from between the second shell 2 and the third shell 6 and causes the acoustic performance of the microphone to decrease, and on the other hand, improves the connection reliability between the second shell 2 and the third shell 6.

[0058] In one embodiment, the microphone also includes a substrate 8, which is arranged in the inner chamber 3, and the substrate 8 includes a third sound hole 801; the waterproof membrane assembly 4 includes a supporting portion 401 and a waterproof membrane 402, one end of the supporting portion 401 is connected to the second shell 2, and the other end of the supporting portion 401 is connected to the substrate 8, and an accommodating cavity 11 is formed between the supporting portion 401, the second shell 2 and the substrate 8, and the waterproof membrane 402 can separate the accommodating cavity 11 into a first chamber 1101 connected to the first sound hole 201 and a second chamber 1102 connected to the third sound hole 801.

[0059] Specifically, Figure 1 and Figure 2 As shown, the microphone of the embodiment of the present application further includes a substrate 8, which is disposed in the inner chamber 3, and electronic components such as a MEMS chip 9, an ASIC chip, an integrated circuit, a connector, and a processor can be fixedly disposed on the substrate 8 to support various electronic components. The substrate 8 includes a third sound hole 801, which passes through the substrate 8, and after the second shell 2 is connected to the first shell 1, the third sound hole 801 is disposed opposite to the first sound hole 201.

[0060] The waterproof membrane assembly 4 includes a support portion 401 and a waterproof membrane 402. The support portion 401 is a circular ring with a through hole, and the waterproof membrane 402 is fixedly arranged in the through hole. During assembly, one end of the support portion 401 is connected to the second shell 2, and the other end of the support portion 401 is connected to the substrate 8, so that a receiving cavity 11 is formed between the support portion 401, the second shell 2 and the substrate 8. At this time, since the waterproof membrane 402 is fixedly arranged in the through hole of the support portion 401, the waterproof membrane 402 can separate the receiving cavity 11 into a first chamber 1101 connected to the first sound hole 201 and a second chamber 1102 connected to the third sound hole 801.

[0061] Thus, when external water flows into the inner chamber 3 through the first sound hole 201, the waterproof membrane 402 can isolate the water flow in the first chamber 1101, preventing the water flow from the second chamber 1102 from flowing into the third sound hole 801 and damaging the various electronic components arranged on the substrate 8.

[0062] In one embodiment, the microphone further includes a MEMS chip 9 , which is disposed on a side of the substrate 8 facing away from the waterproof membrane assembly 4 , and the MEMS chip 9 is disposed opposite to the third sound hole 801 .

[0063] Specifically, Figure 1 As shown, the inner chamber 3 described in the embodiment of the present application can be fixedly provided with a MEMS chip 9, and the MEMS chip 9 can be fixed to the side of the substrate 8 away from the waterproof membrane assembly 4 by means of solder connection, conductive glue connection, gold-tin solder sheet connection, etc., so that the microphone can directly use the substrate 8 to arrange and support the MEMS chip 9 without setting up an additional supporting structure.

[0064] Among them, the substrate 8 includes a third sound hole 801 passing through the substrate 8, and the MEMS chip 9 is arranged opposite to the third sound hole 801, so that the external airflow can enter the MEMS chip 9 through the second sound hole 601, the first sound hole 201 and the third sound hole 801 in sequence.

[0065] In one embodiment, the microphone further includes a support member 10 , one end of the support member 10 abuts against the first housing 1 , and the other end of the support member 10 abuts against the substrate 8 .

[0066] Specifically, Figure 1 and Figure 2 As shown, the microphone described in the embodiment of the present application also includes a support member 10, which is arranged in the inner chamber 3, and one end of the support member 10 abuts against the first shell 1, and the other end of the support member 10 abuts against the substrate 8 to support the substrate 8.

[0067] For example, during assembly, one end of the support member 10 can be first fixed to the first shell 1 by welding or bonding, and then the substrate 8 can be set on the support member 10, and finally the substrate 8 and the support member 10 can be connected and fixed by hot riveting or fastening the upper and lower shells.

[0068] In addition, the material of the support member 10 described in the embodiment of the present application can be metal, plastic, rubber, wood, glass, carbon fiber or composite material, etc. Technical personnel in this field can choose according to actual needs, and this application does not make any specific restrictions here.

[0069] In addition, the number of the supporting members 10 in the embodiment of the present application can be two, three or four to ensure the stability and reliability of supporting the substrate 8.

[0070] In one embodiment, the waterproof membrane 402 is made of ePTFE (Expanded Polytetrafluoroethylene).

[0071] Specifically, the embodiment of the present application effectively enhances the waterproof performance of the waterproof membrane 402 by setting the material of the waterproof membrane 402 to ePTFE, so that the waterproof membrane 402 can better isolate the water flow in the first chamber 1101, thereby preventing the water flow from the second chamber 1102 from flowing into the third sound hole 801 and damaging the various electronic components arranged on the substrate 8.

[0072] In addition, the embodiment of the present application balances the air pressure of the first chamber 1101 and the second chamber 1102 by setting the material of the waterproof membrane 402 to ePTFE, so that the external air pressure, the air pressure of the first chamber 1101, the air pressure of the second chamber 1102 and the air pressure of the inner chamber 3 are all the same, thereby preventing the acoustic performance of the microphone from being reduced due to the inconsistency of the air pressure of the first chamber 1101, the air pressure of the second chamber 1102 and the air pressure of the inner chamber 3 when the external air pressure changes.

[0073] In one embodiment, the support portion 401 is made of foam.

[0074] Specifically, the embodiment of the present application sets the material of the support part 401 to foam. On the one hand, it seals the sound channel between the second shell 2 and the substrate 8, thereby preventing external airflow from leaking between the second shell 2 and the substrate 8 and causing the acoustic performance of the microphone to decrease; on the other hand, the support part 401 made of foam material also provides a certain installation margin for the installation between the second shell 2 and the substrate 8, thereby further improving the installation efficiency of the microphone.

[0075] According to another embodiment of the present application, an electronic device is provided, wherein the electronic device includes the microphone described in the embodiment of the present application.

[0076] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0077] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A microphone, characterized in that: include: A first housing (1); A second shell (2), the second shell (2) being connected to the first shell (1), an inner chamber (3) being formed between the second shell (2) and the first shell (1), the inner chamber (3) being in communication with the outside through a first sound hole (201), a groove (202) being provided on a side of the second shell (2) facing away from the inner chamber (3), the groove (202) being in communication with the first sound hole (201); A waterproof membrane assembly (4), the waterproof membrane assembly (4) being arranged in the inner chamber (3), and the waterproof membrane assembly (4) being arranged opposite to the first sound hole (201); A dustproof net (5), wherein the dustproof net (5) is arranged in the groove (202).

2. The microphone according to claim 1, characterized in that It also comprises a third shell (6), which is arranged on a side of the second shell (2) facing away from the first shell (1), and the orthographic projection of the third shell (6) toward the first shell (1) covers the orthographic projection of the second shell (2) toward the first shell (1).

3. The microphone according to claim 2, characterized in that The third shell (6) comprises a second sound hole (601), and a plurality of the second sound holes (601) are provided, and the plurality of the second sound holes (601) and the first sound hole (201) are arranged in an alternating manner.

4. The microphone according to claim 2, characterized in that It also comprises a sealing ring (7), wherein the sealing ring (7) is arranged between the second shell (2) and the third shell (6).

5. The microphone according to claim 1, characterized in that It also includes a substrate (8), the substrate (8) is arranged in the inner chamber (3), and the substrate (8) includes a third sound hole (801); The waterproof membrane assembly (4) comprises a support portion (401) and a waterproof membrane (402); one end of the support portion (401) is connected to the second shell (2), and the other end of the support portion (401) is connected to the substrate (8); a receiving cavity (11) is formed between the support portion (401), the second shell (2) and the substrate (8); and the waterproof membrane (402) is capable of dividing the receiving cavity (11) into a first chamber (1101) connected to the first sound hole (201) and a second chamber (1102) connected to the third sound hole (801).

6. The microphone according to claim 5, characterized in that It also comprises a MEMS chip (9), wherein the MEMS chip (9) is arranged on a side of the substrate (8) facing away from the waterproof membrane assembly (4), and the MEMS chip (9) is arranged opposite to the third sound hole (801).

7. The microphone according to claim 5, characterized in that It also comprises a support member (10), one end of the support member (10) abuts against the first shell (1), and the other end of the support member (10) abuts against the base plate (8).

8. The microphone according to claim 5, characterized in that The waterproof membrane (402) is made of ePTFE.

9. The microphone according to claim 5, characterized in that The support part (401) is made of foam.

10. An electronic device, characterized in that: A microphone comprising the microphone described in any one of claims 1-9.

Images