Microphone

Abstract

The utility model discloses a microphone, which relates to the technical field of electronic equipment and comprises a shell, the shell is provided with an accommodating cavity and an opening, and a polar plate, an insulating annular gasket, a diaphragm, a conductive annular gasket, a diaphragm ring and a PCBA (printed circuit board assembly) are sequentially crimped in the accommodating cavity; the shell and the polar plate as well as the shell and the PCBA are electrically connected; the diaphragm, the conductive annular gasket and the diaphragm ring are electrically connected in sequence, and the diaphragm ring is electrically connected with the PCBA; the plastic ring is used for blocking the power-on connection among the diaphragm, the conductive annular gasket, the diaphragm ring and the shell; one end of the polar plate and one end of the membrane ring, which are used for crimping the conductive annular gasket, are both of a screen plate structure, a plurality of first through holes are formed in the polar plate, a plurality of second through holes are formed in the side wall of one end of the membrane ring, which is used for crimping the conductive annular gasket, and a third through hole is formed in the PCBA; air flow can penetrate through the first through holes or sequentially penetrate through the third through holes and the second through holes to be blown to the membrane. The deformation damage of the diaphragm is reduced, and the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a microphone. Background Art

[0002] Microphone products with existing structures, such as Figure 2 As shown, during the production or use process, due to excessive backblowing (blowing inward from the mesh surface), back suction (sucking air from the PCBA hole of the microphone), or high-temperature airflow (high-temperature welding, abnormal heating of IC), foreign matter enters the microphone structure from the air inlet hole on the PCB, etc., the diaphragm is abnormally deformed, causing the diaphragm to be unable to return to its original shape, causing wrinkle deformation, resulting in abnormal changes in the sensitivity of the microphone and irreversible quality problems of the product. Utility Model Content

[0003] The purpose of the utility model is to provide a microphone head to solve the problems existing in the above-mentioned prior art, reduce the deformation and damage of the diaphragm, and ensure product quality.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a microphone, comprising a shell, a pole plate, an insulating annular gasket, a diaphragm, a conductive annular gasket, a membrane ring, a plastic ring and a PCBA; the shell has a housing cavity and an opening connected to the housing cavity, and the pole plate, the insulating annular gasket, the diaphragm, the conductive annular gasket, the membrane ring and the PCBA are crimped in sequence in a direction away from the opening at one end of the housing cavity; the shell is electrically connected to the pole plate and the shell is electrically connected to the PCBA; the diaphragm, the conductive annular gasket and the membrane ring are electrically connected in sequence and the membrane ring is electrically connected to the PCBA; the A plastic ring is sleeved on the outside of the insulating annular gasket, the diaphragm, the conductive annular gasket and the membrane ring; the plastic ring is used to block the electrical connection between the diaphragm, the conductive annular gasket and the membrane ring and the outer shell; the electrode plate and the membrane ring are mesh structures at one end for crimping the conductive annular gasket, and a plurality of first through holes are provided on the electrode plate, and a plurality of second through holes are provided on the side wall of one end of the membrane ring for crimping the conductive annular gasket, and a third through hole is provided on the PCBA, and the airflow can pass through each of the first through holes and blow toward the diaphragm, and the airflow can pass through the third through hole and each of the second through holes in sequence and blow toward the diaphragm.

[0006] Preferably, the insulating annular gasket has a thickness of 25 μm to 50 μm.

[0007] Preferably, the thickness of the conductive annular gasket is 25 μm to 50 μm.

[0008] Preferably, a crimping portion is provided on the inner side of one end of the housing away from the opening, and the crimping portion abuts against one side of the PCBA board.

[0009] Preferably, a first protective net is also fixedly provided at the opening.

[0010] Preferably, a second protective net is fixedly provided at the third through hole.

[0011] Compared with the prior art, the utility model has achieved the following technical effects:

[0012] The microphone provided by the utility model adopts an insulating annular gasket and a conductive annular gasket to be crimped on the upper and lower positions of the diaphragm, thereby ensuring the stretching activity space of the diaphragm in the direction of airflow flow; and the side of the diaphragm ring close to the diaphragm and the electrode plate both adopt a mesh structure, which can limit the upper and lower positions of the diaphragm in the direction of airflow flow, preventing the diaphragm from deforming too much in this direction, resulting in exceeding the tension limit of the diaphragm.

[0013] Furthermore, the insulating annular gasket is set to have a thickness of 25 μm to 50 μm, which can meet the larger deformation and stretching activity space of the diaphragm under normal use.

[0014] Furthermore, the thickness of the conductive annular gasket is set to be 25 μm to 50 μm, which can meet the larger deformation and stretching activity space of the diaphragm under normal use.

[0015] Furthermore, the provision of the crimping portion can facilitate crimping and fixing of the PCBA.

[0016] Furthermore, the provision of the first protective net can reduce the risk of foreign matter entering and damaging the corresponding side of the diaphragm.

[0017] Furthermore, the provision of the second protective net can reduce the risk of external foreign matter entering through the third through hole and damaging the corresponding side of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the microphone provided by the utility model;

[0020] Figure 2 This is a schematic diagram of the existing microphone structure;

[0021] Figure 3It is a schematic diagram of the top view structure of the membrane ring in the existing microphone structure;

[0022] Figure 4 This is a schematic diagram of the top view of the membrane ring in the microphone provided by the utility model;

[0023] Figure 5 This is a schematic diagram of the maximum stretching amplitude position of the diaphragm of the microphone provided by the utility model when the airflow direction is upward;

[0024] Figure 6 This is a schematic diagram of the maximum stretching amplitude position of the diaphragm of the microphone provided by the utility model when the airflow direction is downward.

[0025] In the figure: 100-microphone; 1-housing; 2-electrode plate; 3-insulating ring gasket; 4-diaphragm; 5-conductive ring gasket; 6-membrane ring; 7-plastic ring; 8-PCBA; 9-first protective net; 10-first through hole; 11-second through hole; 12-third through hole; 13-crimping part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The purpose of the utility model is to provide a microphone head to solve the problems existing in the prior art, reduce the deformation and damage of the diaphragm, and ensure product quality.

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Embodiment 1

[0030] This embodiment provides a microphone 100, such as Figure 1 to Figure 6As shown, it includes a shell 1, a plate 2, an insulating annular gasket 3, a diaphragm 4, a conductive annular gasket 5, a membrane ring 6, a plastic ring 7 and a PCBA 8; the shell 1 has a housing cavity and an opening connected to the housing cavity, and the end of the housing cavity close to the opening is crimped with the plate 2, the insulating annular gasket 3, the diaphragm 4, the conductive annular gasket 5, the membrane ring 6 and the PCBA 8 in sequence in a direction away from the opening; the shell 1 is electrically connected to the plate 2 and the shell 1 is electrically connected to the PCBA 8; the diaphragm 4, the conductive annular gasket 5 and the membrane ring 6 are electrically connected in sequence and the membrane ring 6 is electrically connected to the PCBA 8; the plastic ring 7 is sleeved on the insulating The annular gasket 3, the diaphragm 4, the conductive annular gasket 5 and the outer side of the membrane ring 6; the plastic ring 7 is used to block the electrical connection between the diaphragm 4, the conductive annular gasket 5 and the membrane ring 6 and the outer shell 1; the electrode plate 2 and the membrane ring 6 are used to crimp one end of the conductive annular gasket 5. Both are mesh structures, and a plurality of first through holes 10 are provided on the electrode plate 2, and a plurality of second through holes 11 are provided on the side wall of one end of the membrane ring 6 for crimping the conductive annular gasket 5. A third through hole 12 is provided on the PCBA8, and the airflow can pass through each first through hole 10 and blow toward the diaphragm 4, and the airflow can pass through the third through hole 12 and each second through hole 11 in sequence and blow toward the diaphragm 4. By adopting the setting of insulating annular gasket 3 and conductive annular gasket 5 and crimping them on the upper and lower positions of diaphragm 4, the stretching activity space of diaphragm 4 in the direction of airflow flow is guaranteed; and the side of membrane ring 6 close to diaphragm 4 and electrode plate 2 both adopt mesh structure, which serves as the limiting support of the upper and lower positions of diaphragm 4 in the direction of airflow flow, preventing diaphragm 4 from deforming too much in this direction, resulting in exceeding the tension limit of diaphragm 4.

[0031] Specifically, the structure of the membrane ring 6 is as follows Figure 1 and Figure 4 As shown, it is similar to an inverted U-shaped structure, formed by a top plate and an annular side plate, and a plurality of second through holes 11 are provided on the top plate. Figure 2 and Figure 3 Compared with the existing membrane ring 6, a top plate with a plurality of second through holes 11 is added, and the top plate structure can limit the maximum deformation position of the diaphragm 4 downward, thereby reducing the occurrence of excessive deformation and damage of the diaphragm 4.

[0032] Specifically, the structure of the top plate can also increase the crimping area between the top plate and the conductive annular gasket 5, thereby improving and ensuring the crimping effect and ensuring a good conductive connection state.

[0033] Specifically, the second through hole 11 can ensure smooth airflow and can also greatly reduce the damage to the corresponding side of the diaphragm 4 by foreign matter entering through the third through hole 12 .

[0034] In the optional solution of this embodiment, it is more preferred that the thickness of the insulating annular gasket 3 is 25 μm to 50 μm. The thickness of the insulating annular gasket 3 is set to 25 μm to 50 μm, which can meet the larger deformation and stretching activity space of the diaphragm 4 under normal use.

[0035] In the optional solution of this embodiment, it is more preferred that the thickness of the conductive annular gasket 5 is 25 μm to 50 μm. The conductive annular gasket 5 is set to have a thickness of 25 μm to 50 μm, which can meet the larger deformation and stretching activity space of the diaphragm 4 under normal use.

[0036] Specifically, the thickness of the insulating annular gasket 3 and the conductive annular gasket 5 can be selected and determined according to actual conditions to ensure that the diaphragm 4 can achieve the best tensile deformation amplitude effect.

[0037] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, a crimping portion 13 is provided on the inner side of one end of the housing 1 away from the opening, and the crimping portion 13 abuts against one side of the PCBA 8. The setting of the crimping portion 13 can facilitate its crimping and fixing of the PCBA 8.

[0038] Among the optional solutions of this embodiment, it is more preferred that Figure 1 and Figure 5-6 As shown, a first protection net 9 is fixedly arranged at the opening. The first protection net 9 can reduce the risk of foreign matter entering and damaging the corresponding side of the diaphragm 4.

[0039] In the optional solution of this embodiment, it is more preferred that a second protection net is fixedly provided at the third through hole 12. The provision of the second protection net can reduce the risk of external foreign matter entering through the third through hole 12 and damaging the corresponding side of the diaphragm 4.

[0040] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A microphone, characterized in that: Including housing, plate, insulating ring gasket, diaphragm, conductive ring gasket, membrane ring, plastic ring and PCBA; The shell has an accommodating cavity and an opening communicating with the accommodating cavity, and the electrode plate, the insulating annular gasket, the diaphragm, the conductive annular gasket, the membrane ring and the PCBA are sequentially crimped in a direction away from the opening at one end of the accommodating cavity; the shell is electrically connected to the electrode plate and the shell is electrically connected to the PCBA; the diaphragm, the conductive annular gasket and the membrane ring are sequentially electrically connected and the membrane ring is electrically connected to the PCBA; The plastic ring is sleeved on the outside of the insulating annular gasket, the diaphragm, the conductive annular gasket and the diaphragm ring; the plastic ring is used to block the electrical connection between the diaphragm, the conductive annular gasket and the diaphragm ring and the housing; The electrode plate and the membrane ring are both mesh structures at one end for crimping the conductive annular gasket, a plurality of first through holes are provided on the electrode plate, a plurality of second through holes are provided on the side wall at one end of the membrane ring for crimping the conductive annular gasket, a third through hole is provided on the PCBA, and the airflow can pass through each of the first through holes and blow toward the diaphragm, and the airflow can pass through the third through holes and each of the second through holes in sequence and blow toward the diaphragm.

2. The microphone according to claim 1, characterized in that: The thickness of the insulating annular gasket is 25 μm to 50 μm.

3. The microphone according to claim 1, characterized in that: The thickness of the conductive annular gasket is 25 μm to 50 μm.

4. The microphone according to claim 1, characterized in that: A crimping portion is provided on the inner side of one end of the housing away from the opening, and the crimping portion abuts against one side of the PCBA.

5. The microphone according to claim 1, characterized in that: A first protective net is also fixedly arranged at the opening.

6. The microphone according to claim 1, characterized in that: A second protective net is fixedly arranged at the third through hole.

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