Sealing structure for microphone on PCB and earphone

Abstract

The utility model discloses a sealing structure for a microphone on a PCB (Printed Circuit Board), an earphone and the microphone are fixed on the PCB, and the PCB and the microphone are provided with a shell; the sealing structure comprises waterproof screen cloth and a microphone sleeve, and the PCB and the microphone are further provided with a fixing shell. The housing is provided with a through hole used for sound incoming. The microphone sleeve is sleeved on the microphone, a sound inlet channel is arranged in the microphone sleeve, and an inlet of the sound inlet channel is communicated with the through hole; the microphone is provided with a sound inlet used for sound input, and the sound inlet is communicated with the outlet of the sound inlet channel. One surface of the waterproof screen cloth is pasted and fixed on the inner wall of the through hole on the shell, the other surface of the waterproof screen cloth is pasted and fixed on the outer wall of the microphone sleeve at the inlet of the sound inlet channel, and the inner wall of the shell abuts against the waterproof screen cloth; the fixing shell is fixed between the shell and the PCB, and an opening is formed in the fixing shell and used for abutting against and fixing the top and the side face of the microphone sleeve. According to the utility model, the waterproof performance and the sealing performance of the microphone sleeve can be well ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of microphones, in particular to a sealing structure and an earphone for a microphone on a PCB board. Background Art

[0002] At present, earphones of various types such as ordinary in-ear Bluetooth earphones, neck-worn Bluetooth earphones, and over-ear Bluetooth earphones are all equipped with microphones. In the prior art, the sound guiding structure of the microphone of the earphone includes an earphone housing, a PCB circuit board, a microphone, and a microphone sleeve. For example, a sound guiding structure of a microphone of an earphone disclosed in Patent 202022711536.8 includes an earphone housing, a PCB circuit board, a microphone, and a microphone sleeve. A first nylon mesh is provided between the first sleeve sound guiding hole of the microphone sleeve and the first housing sound guiding hole of the earphone housing. After the first nylon mesh is provided, the first sound guiding channel can have a waterproof effect; however, simply placing the mesh between the microphone sleeve and the earphone housing may not necessarily achieve a good waterproof effect. For example, when the microphone sleeve shakes with the earphone, the position of the mesh will be moved, or a gap appears between the microphone sleeve and the earphone housing, which will affect the sealing effect and cause the waterproof effect to fail. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a sealing structure and an earphone for a microphone on a PCB board, which can ensure the waterproofness and sealing performance of the microphone sleeve.

[0004] To solve the above technical problem, in the first aspect, the utility model discloses a sealing structure for a microphone on a PCB board. The microphone is fixed on the PCB board, and the PCB board and the microphone have an outer shell; the sealing structure includes a fixed shell, a waterproof mesh, and a microphone sleeve;

[0005] A through hole for sound inlet is provided on the outer shell; the microphone sleeve is sleeved on the microphone, and a sound inlet channel is provided in the microphone sleeve, and the inlet of the sound inlet channel is communicated with the through hole;

[0006] A sound inlet for sound input is provided on the microphone, and the sound inlet is communicated with the outlet of the sound inlet channel;

[0007] One side of the waterproof mesh is fixedly adhered to the inner wall of the through hole on the outer shell, and the other side of the waterproof mesh is fixedly adhered to the outer wall of the microphone sleeve at the inlet of the sound inlet channel, and the inner wall of the outer shell presses against the waterproof mesh;

[0008] The fixed shell is fixed between the outer shell and the PCB board, and an opening is provided on the fixed shell, and the opening is used to press and fix the top and side surfaces of the microphone sleeve.

[0009] As an alternative embodiment, the microphone is located at the edge position of the PCB board.

[0010] As yet another alternative embodiment, the microphone sleeve has multiple sides, and the entrance of the sound inlet channel is provided on the target side of the microphone sleeve that is farthest from the center of the PCB board; the opening is used to press against the top of the microphone sleeve and two adjacent sides of the target side of the microphone sleeve.

[0011] As yet another alternative embodiment, the sound inlet is located at the top of the microphone.

[0012] As yet another alternative embodiment, the waterproof mesh cloth is pasted on the inner wall of the housing and the outer wall of the microphone sleeve by applying adhesive.

[0013] As yet another alternative embodiment, the fixed housing is an antenna bracket for mounting an LDS antenna.

[0014] The second aspect of the present utility model discloses an earphone, including the PCB board, the microphone and the sealing structure of the microphone as described in the first aspect of the present utility model.

[0015] Compared with the prior art, the embodiments of the present utility model have the following beneficial effects:

[0016] In the embodiments of the present utility model, the fixed housing presses against and fixes the top and sides of the microphone sleeve, which can fix the position of the microphone sleeve and reduce the situation that the passive shaking of the microphone sleeve affects the sealing performance. At the same time, the two sides of the waterproof mesh cloth are respectively pasted and fixed on the through hole of the housing and the sound inlet channel of the microphone sleeve, and the inner wall of the housing presses against the waterproof mesh cloth, which can prevent the waterproof mesh cloth from moving between the housing and the microphone sleeve, and can ensure the waterproofness and sealing performance of the microphone sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of a microphone and its sealing structure on a PCB board with a housing disclosed in the embodiments of the present utility model;

[0019] Figure 2 is a schematic cross-sectional structural diagram of a microphone and its sealing structure on a PCB board with a housing disclosed in the embodiments of the present utility model;

[0020] Figure 3 It is a partial structural schematic diagram of a microphone on a PCB board and its sealing structure disclosed in an embodiment of the present utility model;

[0021] Figure 4 It is a structural schematic diagram of a microphone sleeve disclosed in an embodiment of the present utility model;

[0022] Figure 5 It is a structural schematic diagram of a fixing shell disclosed in an embodiment of the present utility model. Specific embodiments

[0023] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Refer to Figures 1-5 , an embodiment of the present utility model discloses a sealing structure for a microphone 2 on a PCB board 1. The microphone 2 is fixed on the PCB board 1, and the PCB board 1 and the microphone 2 have a housing 3; the sealing structure includes a fixing shell 4, a waterproof mesh cloth 5 and a microphone sleeve 6;

[0026] A through hole 31 for sound inlet is provided on the housing 3; the microphone sleeve 6 is sleeved on the microphone 2, and a sound inlet channel 61 is provided in the microphone sleeve 6, and the inlet of the sound inlet channel 61 is communicated with the through hole 31;

[0027] A sound inlet (not shown in the drawings) for sound input is provided on the microphone 2, and the sound inlet is communicated with the outlet of the sound inlet channel 61;

[0028] One side of the waterproof mesh cloth 5 is fixedly adhered to the inner wall of the housing 3 at the through hole 31, the other side of the waterproof mesh cloth 5 is fixedly adhered to the outer wall of the microphone sleeve 6 at the inlet of the sound inlet channel 61, and the inner wall of the housing 3 presses against the waterproof mesh cloth 5;

[0029] The fixing shell 4 is fixed between the housing 3 and the PCB board 1, and an opening 41 is provided on the fixing shell 4 for pressing and fixing the top and side surfaces of the microphone sleeve 6.

[0030] In this embodiment, the fixed housing 4 is set to press against the top and side of the microphone sleeve 6, which can fix the position of the microphone sleeve 6 and reduce the situation that the microphone sleeve 6 shakes passively and affects the sealing performance. At the same time, the two sides of the waterproof mesh cloth 5 are respectively pasted and fixed on the through hole 31 of the housing 3 and the sound inlet channel 61 of the microphone sleeve 6, and the inner wall of the housing 3 presses against the waterproof mesh cloth 5, which can prevent the waterproof mesh cloth 5 from moving between the housing 3 and the microphone sleeve 6, and can ensure the waterproofness and sealing performance of the microphone sleeve 6.

[0031] In an alternative embodiment, the microphone 2 is located at the edge position of the PCB board 1; so that the microphone 2 is close to the housing 3, which is convenient for receiving sound and reducing sound attenuation.

[0032] In yet another alternative embodiment, the microphone sleeve 6 has multiple sides, and the inlet of the sound inlet channel 61 is provided on the target side of the microphone sleeve 6 that is farthest from the center of the PCB board 1; the opening 41 is used to press against the top of the microphone sleeve 6 and the two adjacent sides of the target side of the microphone sleeve 6.

[0033] In yet another alternative embodiment, the sound inlet is located at the top of the microphone 2.

[0034] In yet another alternative embodiment, the waterproof mesh cloth 5 is pasted on the inner wall of the housing 3 and the outer wall of the microphone sleeve 6 by applying adhesive.

[0035] In yet another alternative embodiment, the fixed housing 4 is an antenna bracket for installing an LDS antenna.

[0036] Embodiment Two

[0037] An embodiment of the present utility model discloses an earphone, including the PCB board, the microphone and the sealing structure of the microphone as described in Embodiment One.

[0038] What is disclosed in the content disclosed in the embodiments of the present utility model is only the preferred embodiments of the present utility model, which are only used to illustrate the technical solutions of the present utility model and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A sealing structure for a microphone on a PCB, wherein the microphone is fixed on the PCB, and the PCB and the microphone have a housing; characterized in that: Includes fixed shell, waterproof mesh and microphone cover; The shell is provided with a through hole for sound intake; the microphone sleeve is sleeved on the microphone, a sound intake channel is provided in the microphone sleeve, and the entrance of the sound intake channel is communicated with the through hole; The microphone is provided with a sound inlet for sound input, and the sound inlet is communicated with the outlet of the sound inlet channel; One side of the waterproof mesh is glued and fixed to the inner wall of the through hole on the outer shell, and the other side of the waterproof mesh is glued and fixed to the outer wall of the microphone cover at the entrance of the sound inlet channel, and the inner wall of the outer shell presses against the waterproof mesh; The fixing shell is fixed between the outer shell and the PCB board, and an opening is provided on the fixing shell, and the opening is used to press and fix the top and side of the microphone cover.

2. The sealing structure according to claim 1, characterized in that: The microphone is located at the edge of the PCB board.

3. The sealing structure according to claim 2, characterized in that: The microphone cover has multiple sides, and the entrance of the sound inlet channel is arranged on the target side of the microphone cover farthest from the center of the PCB board; the opening is used to press against the top of the microphone cover and two adjacent sides of the target side on the microphone cover.

4. The sealing structure according to claim 1, characterized in that: The sound inlet is located on the top of the microphone.

5. The sealing structure according to claim 1, characterized in that: The waterproof mesh is adhered to the inner wall of the shell and the outer wall of the microphone cover by applying adhesive.

6. The sealing structure according to claim 2, characterized in that: The fixing shell is an antenna bracket, which is used for installing the LDS antenna.

7. A headset, characterized in that: It comprises a PCB board, a microphone and a sealing structure of the microphone as described in any one of claims 1 to 6.

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