Quarter-inch three-dimensional vector microphone

Abstract

The utility model relates to the technical field of three-dimensional vector microphones, and discloses a quarter-inch three-dimensional vector microphone, which comprises a shell and a circuit board arranged in the shell, a disassembly and assembly mechanism is arranged in the shell, a tightening connection mechanism is arranged on the circuit board, and the tightening connection mechanism is connected with the shell. The dismounting mechanism comprises a fixing plate arranged on the outer wall of the circuit board, the outer wall of the fixing plate extrudes a positioning rod, then drives the positioning rod to move and extrudes a spring at the same time, and when the fixing plate continues to move to drive a positioning hole in the outer wall to move to the position of the positioning rod, the spring is fixed. When the vector generator is disassembled, only the push rod needs to be pressed to drive the ejector block to extrude the connecting rod, so that the positioning rod can be driven to move, the positioning rod is separated from the inner wall of the positioning hole, disassembly is completed, the vector generator can be quickly disassembled, assembled and overhauled, and the disassembly and assembly efficiency is improved. And maintenance personnel can conveniently carry out maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of three-dimensional vector microphone technology, specifically, it relates to a quarter-inch three-dimensional vector microphone. Background Technology

[0002] Vector microphones can simultaneously measure sound pressure and particle velocity to obtain sound field vector information, combining the advantages of high low-frequency sensitivity, small size, and better suppression of ambient noise. A three-dimensional vector microphone integrates three hot-wire particle velocity sensors and one sound pressure sensor.

[0003] The connection and installation of the vector microphone to the external housing is quite complicated, requiring the use of fastening bolts. This greatly extends the time required for disassembly and assembly, making it inconvenient for maintenance personnel to quickly disassemble and repair the device.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] To address the aforementioned technical problem that the connection and installation of the vector microphone to the external housing is cumbersome, requiring the use of fastening bolts, which greatly prolongs the time required for disassembly and assembly, thus hindering maintenance personnel from quickly disassembling and repairing it, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] A quarter-inch three-dimensional vector microphone, including a housing;

[0007] A circuit board is disposed inside the housing, and a disassembly and assembly mechanism is provided inside the housing. A tightening connection mechanism is provided on the circuit board, and the disassembly and assembly mechanism includes a fixing plate mounted on the outer wall of the circuit board.

[0008] A fixing block is installed on the outer wall of the housing. A sliding hole is opened on one side of the outer wall of the fixing block. A spring is fixedly connected to the inner wall of the sliding hole. A positioning rod is fixedly connected to the end of the spring away from the inner wall of the sliding hole. A connecting rod is fixedly connected to the outer wall of the positioning rod. A limit frame is installed on one side of the outer wall of the housing. The outer wall of the connecting rod away from the positioning rod movably passes through the outer wall of the limit frame. A through hole is opened on the outer wall of the limit frame. A push rod is movably installed on the inner wall of the through hole. A top block is fixedly connected to one end of the push rod.

[0009] In a preferred embodiment of this utility model, a socket is installed at the bottom of the outer wall of the circuit board, a sound pressure sensor is installed on the top outer wall of the circuit board, a mass velocity sensor is connected to the outer wall of the circuit board, and a connecting hole is opened on the outer wall of the housing.

[0010] In a preferred embodiment of this utility model, there are two fixing plates, which are distributed symmetrically on the outer wall of the circuit board, and positioning holes are provided on the outer wall of the fixing plates.

[0011] In a preferred embodiment of this utility model, the outer wall of the positioning rod is fitted to the inner wall of the positioning hole on the outer wall of the fixing plate, and the bottom of the positioning rod is provided with an inclined surface.

[0012] In a preferred embodiment of this utility model, the outer wall of the connecting rod away from the positioning rod is provided with a force-bearing inclined surface, the outer wall of the fixing block is provided with a connecting groove, and the outer wall of the connecting rod is movably disposed on the inner wall of the connecting groove.

[0013] In a preferred embodiment of this utility model, there are three sound pressure sensors and three mass velocity sensors, which are arranged in a mutually orthogonal manner on the circuit board.

[0014] In a preferred embodiment of this utility model, the overall size of the entire vector microphone is one-quarter inch.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention uses the outer wall of a fixed plate to press on a positioning rod, causing the positioning rod to move and simultaneously pressing on a spring. As the fixed plate continues to move, the positioning hole on the outer wall moves to the position of the positioning rod, at which point the spring rebounds and pushes the positioning rod to engage with its inner wall, completing the installation between the circuit board and the housing. Disassembly is simple: pressing the push rod causes the top block to press on the connecting rod, thus moving the positioning rod and disengaging it from the inner wall of the positioning hole, completing the disassembly. This allows for quick disassembly and repair of the vector generator, facilitating maintenance by personnel.

[0017] This invention combines three particle velocity sensors orthogonally on a single circuit board, thereby achieving simultaneous directional characterization. The intersecting distance between the three particle velocity sensors is smaller, resulting in better performance. The microphone housing is made of metal, and the overall size is smaller, about a quarter inch.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the disassembly and assembly mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of part of the disassembly and assembly mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the compression connection mechanism of this utility model.

[0025] In the diagram: 1. Housing; 2. Circuit board; 31. Assembly / disassembly mechanism; 311. Fixing plate; 312. Fixing block; 313. Spring; 314. Positioning rod; 315. Connecting rod; 316. Limiting frame; 317. Top block; 318. Push rod; 32. Tightening connection mechanism; 321. Socket; 322. Sound pressure sensor; 323. Mass velocity sensor; 324. Connecting hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] like Figures 1 to 5 As shown, a quarter-inch three-dimensional vector microphone includes a housing 1, a circuit board 2 disposed inside the housing 1, a disassembly and assembly mechanism 31 disposed inside the housing 1, and a tightening connection mechanism 32 disposed on the circuit board 2. The disassembly and assembly mechanism 31 includes a fixing plate 311 mounted on the outer wall of the circuit board 2, a fixing block 312 mounted on the outer wall of the housing 1, a sliding hole being formed on one side of the outer wall of the fixing block 312, a spring 313 being fixedly connected to the inner wall of the sliding hole, a positioning rod 314 being fixedly connected to the end of the spring 313 away from the inner wall of the sliding hole, a connecting rod 315 being fixedly connected to the outer wall of the positioning rod 314, a limiting frame 316 being mounted on one side of the outer wall of the housing 1, the connecting rod 315 being movably inserted through the outer wall of the limiting frame 316 at the end away from the positioning rod 314, a through hole being formed on the outer wall of the limiting frame 316, a push rod 318 being movably disposed on the inner wall of the through hole, and a top block 317 being fixedly connected to one end of the push rod 318.

[0028] Furthermore, there are two fixing plates 311, which are distributed symmetrically on the outer wall of the circuit board 2. The outer wall of the fixing plates 311 is provided with positioning holes, so that the left and right sides of the circuit board 2 can be evenly supported, thereby improving the stability of the circuit board 2 after it is installed in a limited position.

[0029] Furthermore, the outer wall of the positioning rod 314 fits snugly against the inner wall of the positioning hole on the outer wall of the fixing plate 311, and the bottom of the positioning rod 314 is provided with an inclined surface, which ensures the stability of the positioning rod 314 after it is engaged with the positioning hole.

[0030] Furthermore, the outer wall of the connecting rod 315 away from the positioning rod 314 has a force-bearing inclined surface, and the outer wall of the fixing block 312 has a connecting groove. The outer wall of the connecting rod 315 is movably disposed on the inner wall of the connecting groove. Through the force-bearing inclined surface, it can be squeezed, thereby moving and driving the positioning rod 314 to move, which facilitates disassembly.

[0031] A socket 321 is installed at the bottom of the outer wall of the circuit board 2, a sound pressure sensor 322 is installed on the top outer wall of the circuit board 2, a mass velocity sensor 323 is connected to the outer wall of the circuit board 2, and a connecting hole 324 is opened on the outer wall of the housing 1.

[0032] Furthermore, there are three sound pressure sensors 322 and three particle velocity sensors 323, which are arranged in an orthogonal manner on the circuit board 2. This makes the three particle velocity sensors 323 closer together and improves their sensitivity.

[0033] Furthermore, the overall size of the entire vector microphone is only a quarter inch, making it smaller and easier to measure acoustic parameters in confined spaces.

[0034] The implementation principle of a quarter-inch three-dimensional vector microphone in this embodiment is as follows: First, when installing the vector microphone and housing 1, the overall equipment circuit board 2 is inserted into the housing 1. The fixing plate 311 on the outer wall of the circuit board 2 will move upwards inside the housing 1. During this movement, the fixing plate 311 will contact and press against the inclined surface at the bottom of the positioning rod 314. The positioning rods 314, under this pressure, will move to the left and right sides. Simultaneously, the positioning rods 314 will press against the spring 313. As the fixing plate 311 continues to move upwards, the positioning hole on its outer wall will move upwards. Once the positioning hole reaches the position of the positioning rod 314, the spring 313 will... The springback resets the positioning rod 314, causing it to move back to its original position. The outer walls of the positioning rods 314 on both sides then engage with the inner walls of the positioning holes on the outer walls of the fixing plate 311, thus limiting and fixing the fixing plate 311. This allows for the limited installation of the circuit board 2. For disassembly, simply press the push rod 318 to move the top block 317 inwards. During this movement, the top block 317 will press against the inclined surfaces on the outer walls of the connecting rod 315, causing the connecting rod 315 to move to the left and right, thereby moving the positioning rods 314. This allows the outer walls of the positioning rods 314 to disengage from the inner walls of the positioning holes, releasing the limiting effect. This enables quick disassembly and repair of the vector generator, facilitating maintenance by personnel.

[0035] By orthogonally combining three particle velocity sensors 323 on a circuit board 2, a figure-eight directional property is simultaneously achieved. The intersection distance between the three particle velocity sensors 323 is smaller, resulting in better performance. The microphone housing 1 is made of metal, with a smaller overall quarter-inch size and a robust structure. At the same time, connecting holes 324 are provided on both sides of the housing 1, which facilitates the transmission of sound waves to the sensors. The socket 321 base connector below the circuit board 2 makes contact with the corresponding hole, thereby providing power and signal acquisition for the microphone.

Claims

1. A quarter-inch three-dimensional vector microphone, comprising a shell (1); - a circuit board (2) arranged inside the housing (1), characterized in that A dismounting mechanism (31) is arranged inside the shell (1), and a compact connecting mechanism (32) is arranged on the circuit board (2); the dismounting mechanism (31) comprises a fixed plate (311) arranged on the outer wall of the circuit board (2): A fixed block (312) is arranged on the outer wall of the shell (1), one side of the outer wall of the fixed block (312) is provided with a sliding hole, a spring (313) is fixedly connected to the inner wall of the sliding hole, one end of the spring (313) away from the inner wall of the sliding hole is fixedly connected with a positioning rod (314), the outer wall of the positioning rod (314) is fixedly connected with a connecting rod (315), a limiting frame (316) is arranged on one side of the outer wall of the shell (1), the outer wall of one end of the connecting rod (315) away from the positioning rod (314) is movably penetrated through the outer wall of the limiting frame (316), a through hole is formed in the outer wall of the limiting frame (316), and a push rod (318) is movably arranged in the inner wall of the through hole; one end of the push rod (318) is fixedly connected with a top block (317).

2. A quarter-inch three-dimensional vector microphone according to claim 1, wherein A socket (321) is arranged at the bottom of the outer wall of the circuit board (2), a sound pressure sensor (322) is arranged at the top of the outer wall of the circuit board (2), and a particle vibration speed sensor (323) is arranged on the outer wall of the circuit board (2) in communication; and a communication hole (324) is formed in the outer wall of the shell (1).

3. A quarter-inch three-dimensional vector microphone according to claim 1, wherein, The number of the fixed plates (311) is two, the fixed plates (311) are symmetrically arranged on the outer wall of the circuit board (2), and the outer wall of the fixed plate (311) is provided with a positioning hole.

4. A quarter-inch three-dimensional vector microphone according to claim 1, wherein, The outer wall of the positioning rod (314) is matched with the inner wall of the positioning hole formed in the outer wall of the fixed plate (311), and the bottom of the positioning rod (314) is provided with an inclined surface.

5. A quarter-inch three-dimensional vector microphone according to claim 1, wherein, A stress inclined surface is formed in the outer wall of one end of the connecting rod (315) away from the positioning rod (314), a communication sliding groove is formed in the outer wall of the fixed block (312), and the outer wall of the connecting rod (315) is movably arranged in the inner wall of the communication sliding groove.

6. A quarter-inch three-dimensional vector microphone according to claim 2, wherein, The number of the sound pressure sensor (322) and the particle vibration speed sensor (323) is three, and they are arranged in a mutually orthogonal state on the circuit board (2).

7. A quarter-inch three-dimensional vector microphone according to claim 2, wherein The size of the whole vector microphone is one quarter inch.

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