Single-directivity condenser microphone connecting structure
The single-directional condenser microphone connection structure addresses high costs and complex assembly by using a circular ring in a cylinder for damping, improving efficiency and enabling easy parameter adjustment.
Patent Information
- Application Number
- CN202420903325.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-28
AI Technical Summary
Existing single-directional condenser microphones face high material costs, complex assembly processes, and lack of universality due to the use of multiple copper rings for damping plates, hindering efficient production and adjustment of electrical performance parameters.
A single-directional condenser microphone connection structure utilizing a circular ring in a cylinder to form a damping plate, allowing for simplified assembly and adjustment of electrical performance parameters by positioning or replacing the ring and cylinder.
Reduces material costs, simplifies assembly, enhances production efficiency, and facilitates automated mass production while enabling easy adjustment of electrical performance parameters.
Smart Images
Figure CN222301960U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of single-directional microphones, in particular to a single-directional condenser microphone connection structure. Background Art
[0002] With the continuous advancement of electronic technology and the continuous improvement of people's living standards, electret condenser microphones (hereinafter referred to as microphones), which are the input end of electroacoustic devices, have been increasingly used, with annual production reaching billions of units, forming a relatively broad market.
[0003] The unidirectionality of a microphone refers to the property that the sensitivity of the microphone changes with the angle between it and the sound source; one method of adjusting the sensitivity and directionality of a unidirectional microphone product is to adjust the position of the damping plate in the plastic cavity; the existing assembly structure of the damping plate is to use two copper rings to sandwich the damping plate in the middle to achieve the effect of absorbing sound and achieving unidirectionality; further, the electrical performance parameters of the microphone can be adjusted by changing the thickness of the two copper rings; this damping plate structure uses more materials and the assembly method is more complicated, resulting in low assembly efficiency, high production costs, and lack of universality.
[0004] Therefore, developing and designing a single-directional condenser microphone connection structure that can reduce material costs, simplify assembly processes, achieve automated mass production, and facilitate adjustment of electrical performance parameters is a problem that needs to be solved urgently at this stage. Utility Model Content
[0005] In order to solve the problems existing in the prior art, the utility model provides a single-directional capacitive microphone connection structure, which can form a damping plate by utilizing a circular ring arranged in the cylinder, so that the structure of the damping plate is simpler, which can reduce material costs, make assembly easier, improve assembly efficiency, and facilitate automated mass production; further, when it is necessary to adjust the electrical performance parameters of the microphone, it is only necessary to adjust the position of the circular ring in the cylinder or replace the cylinder and the circular ring as a whole, and the method of adjusting the electrical performance parameters is simpler.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0007] A single-directional condenser microphone connection structure, comprising:
[0008] A printed circuit board and a parallel plate capacitor arranged in a spaced relationship;
[0009] A cylinder, wherein the cylinder is located between the printed circuit board and the parallel plate capacitor, one end of the cylinder abuts against the printed circuit board, and the other end of the cylinder abuts against the parallel plate capacitor;
[0010] A circular ring is arranged in the cylinder, and the outer edge of the circular ring is connected to the inner wall surface of the cylinder to form a damping plate.
[0011] As a preferred technical solution, the ring is detachably arranged on the cylinder.
[0012] As a preferred technical solution, the ring can move axially relative to the cylinder;
[0013] And / or, the outer edge of the ring is fixed to the inner wall of the cylinder by gluing or interference fit;
[0014] And / or, the material of the cylinder is set to copper.
[0015] As a preferred technical solution, the ring and the cylinder are configured as an integrally formed structure.
[0016] As a preferred technical solution, the axes of the printed circuit board, the parallel plate capacitor, the ring and the cylinder are all coaxially arranged.
[0017] As a preferred technical solution, damping paper is provided on the side of the ring facing the parallel plate capacitor.
[0018] As a preferred technical solution, the parallel plate capacitor includes a plate, a gasket and a diaphragm in sequence along a direction away from the printed circuit board.
[0019] As a preferred technical solution, a cavity shell is sleeved on the outside of the cylinder, the cavity shell is located between the printed circuit board and the gasket, and one end of the cavity shell abuts against the gasket.
[0020] As a preferred technical solution, it further comprises a shell, wherein the printed circuit board, the parallel plate capacitor and the cylinder are all located inside the shell.
[0021] As a preferred technical solution, a dust and water proof net is provided at one end of the housing close to the parallel plate capacitor.
[0022] The beneficial effects of the utility model are as follows:
[0023] 1. The utility model utilizes a circular ring arranged in the cylinder to form a damping plate, so that the structure of the damping plate is simpler, material costs can be reduced, assembly is easier, assembly efficiency is improved, and automated mass production is facilitated; further, when the electrical performance parameters of the microphone need to be adjusted, it is only necessary to adjust the position of the circular ring in the cylinder or replace the cylinder and the circular ring as a whole, and the adjustment method of the electrical performance parameters is simpler.
[0024] 2. When the circular ring and the cylinder of the utility model are detachably connected, the circular ring can be easily adjusted in position within the cylinder, making it very easy to adjust the electrical performance parameters of the microphone, which can effectively reduce R&D and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the overall structure of a first embodiment of a single-directional condenser microphone connection structure of the utility model;
[0026] Figure 2 for Figure 1 Exploded diagram of
[0027] Figure 3 It is a schematic diagram of the overall structure of a second embodiment of a single-directional condenser microphone connection structure of the utility model;
[0028] Figure 4 for Figure 3 Exploded diagram.
[0029] In the figure: 1-printed circuit board, 2-parallel plate capacitor, 21-electrode plate, 22-gasket, 23-diaphragm, 3-cylinder, 4-ring, 41-damping paper, 5-cavity shell, 6-outer shell, 61-dustproof and waterproof net. DETAILED DESCRIPTION
[0030] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.
[0031] Embodiment 1
[0032] Please refer to Figure 1 and Figure 2 , which is a first embodiment of a single-directional condenser microphone connection structure of the utility model, comprising a printed circuit board 1, a parallel plate capacitor 2, a cylinder 3 and a ring 4; the printed circuit board 1 and the parallel plate capacitor 2 are arranged at intervals, the cylinder 3 is located between the printed circuit board 1 and the parallel plate capacitor 2, one end of the cylinder 3 abuts against the printed circuit board 1, and the other end of the cylinder 3 abuts against the parallel plate capacitor 2, and a plastic cavity is formed inside the cylinder 3. The printed circuit board 1, the parallel plate capacitor 2 and the cylinder 3 form an acoustic-electric conversion circuit, and the acoustic-electric conversion circuit can convert acoustic energy into electrical energy; the ring 4 is arranged in the cylinder 3, and the outer edge of the ring 4 is connected to the inner wall surface of the cylinder 3 to form a damping plate. When the relative position of the ring 4 in the cylinder 3 changes, the electrical performance parameters of the microphone will be affected.
[0033] For clarification, please refer to Figure 1 and Figure 2The axes of the printed circuit board 1, the parallel plate capacitor 2, the ring 4 and the cylinder 3 should be coaxially arranged to facilitate production and installation and to ensure the performance of the microphone; at the same time, the axial direction of the utility model is based on the axis of the cylinder 3.
[0034] In this embodiment, please refer to Figure 1 and Figure 2 The ring 4 is detachably arranged on the cylinder 3, so as to facilitate adjustment of the relative position between the ring 4 and the cylinder 3, and further facilitate adjustment of the electrical performance parameters of the microphone; specifically, the ring 4 should be able to move axially relative to the cylinder 3, and the electrical performance parameters of the microphone can be adjusted when the ring 4 moves.
[0035] It should be noted that when the ring 4 moves to the target position, the outer edge of the ring 4 and the inner wall surface of the cylinder 3 can be fixed by gluing or interference fit to ensure the stability of the electrical performance parameters of the microphone; further, the material of the cylinder 3 is set to copper, which can conduct electricity stably.
[0036] In this embodiment, please refer to Figure 2 A damping paper 41 is preferably provided on the side of the ring 4 facing the parallel plate capacitor 2 .
[0037] In this embodiment, please refer to Figure 1 and Figure 2 The parallel plate capacitor 2 includes a plate 21 , a gasket 22 and a diaphragm 23 in sequence along a direction away from the printed circuit board 1 .
[0038] Based on the above examples, please refer to Figure 1 and Figure 2 The outer sleeve of the cylinder 3 is provided with a cavity shell 5, which is located between the printed circuit board 1 and the gasket 22, and one end of the cavity shell 5 abuts against the gasket 22. The cavity shell 5 can protect and position the printed circuit board 1, the parallel plate capacitor 2 and the cylinder 3.
[0039] In this embodiment, please refer to Figure 1 and Figure 2 The utility model further comprises a shell 6, wherein the printed circuit board 1, the parallel plate capacitor and the cylinder 3 are all located in the shell 6, and the shell 6 can play a protective role.
[0040] For further information, please refer to Figure 2 A dustproof and waterproof net 61 is provided at one end of the shell 6 close to the parallel plate capacitor 2. The dustproof and waterproof net 61 is installed at the end of the shell 6 close to the sound input end, which can play a dustproof and waterproof effect; further, the shell 6 and the dustproof and waterproof net 61 can make the product more compact and simple, and improve the user experience.
[0041] Embodiment 2
[0042] Please refer to Figure 3 and Figure 4 , which is a second embodiment of a single-directional condenser microphone connection structure of the utility model.
[0043] The main difference between this embodiment and the first embodiment is that the ring 4 and the cylinder 3 are set to an integrally formed structure, which makes assembly and disassembly easier; further, in order to facilitate the adjustment of the electrical performance parameters of the microphone, the integrally formed structure of the ring 4 and the cylinder 3 can be set to a variety of types according to the different positions of the ring 4 in the cylinder 3. By replacing different types of integrally formed rings 4 and cylinders 3, the electrical performance parameters of the microphone can be conveniently adjusted.
[0044] It should be noted that the integrally formed structure of the ring 4 and the cylinder 3 can be directly made of conductive material; in other embodiments, the integrally formed structure of the ring 4 and the cylinder 3 can also be made of non-conductive material (such as plastic), and conductivity is achieved through surface electroplating.
[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A single-directional condenser microphone connection structure, characterized in that: include; A printed circuit board (1) and a parallel plate capacitor (2) arranged at intervals; A cylinder (3), the cylinder (3) being located between the printed circuit board (1) and the parallel plate capacitor (2), one end of the cylinder (3) being in contact with the printed circuit board (1), and the other end of the cylinder (3) being in contact with the parallel plate capacitor (2); A circular ring (4), wherein the circular ring (4) is arranged inside the cylinder (3), and the outer edge of the circular ring (4) is connected to the inner wall surface of the cylinder (3) to form a damping plate.
2. The unidirectional condenser microphone connection structure according to claim 1, characterized in that: The circular ring (4) is detachably arranged on the cylinder (3).
3. The unidirectional condenser microphone connection structure according to claim 2, characterized in that: The ring (4) is capable of moving axially relative to the cylinder (3); And / or, the outer edge of the ring (4) and the inner wall surface of the cylinder (3) are fixed by gluing or interference fit; And / or, the material of the cylinder (3) is copper.
4. The unidirectional condenser microphone connection structure according to claim 1, characterized in that: The circular ring (4) and the cylindrical body (3) are provided as an integrally formed structure.
5. The unidirectional condenser microphone connection structure according to claim 2 or 4, characterized in that: The axes of the printed circuit board (1), the parallel plate capacitor (2), the circular ring (4) and the cylinder (3) are all coaxially arranged.
6. The unidirectional condenser microphone connection structure according to claim 1, characterized in that: Damping paper (41) is provided on the side of the circular ring (4) facing the parallel plate capacitor (2).
7. The unidirectional condenser microphone connection structure according to claim 1, characterized in that: The parallel plate capacitor (2) comprises a polar plate (21), a gasket (22) and a diaphragm (23) in sequence along a direction away from the printed circuit board (1).
8. The unidirectional condenser microphone connection structure according to claim 7, characterized in that: The outer portion of the cylinder (3) is provided with a cavity shell (5), the cavity shell (5) is located between the printed circuit board (1) and the gasket (22), and one end of the cavity shell (5) is in contact with the gasket (22).
9. The unidirectional condenser microphone connection structure according to claim 1, characterized in that: It also comprises a shell (6), wherein the printed circuit board (1), the parallel plate capacitor and the cylinder (3) are all located inside the shell (6).
10. The unidirectional condenser microphone connection structure according to claim 9, characterized in that: A dust and water proof net (61) is provided at one end of the housing (6) close to the parallel plate capacitor (2).