Bi-directional pickup silicon microphone

Abstract

The utility model discloses a bi-directional pickup silicon microphone, which belongs to the technical field of microphones and comprises a supporting base, a rotating rod rotatably mounted in the supporting base, a fixed handle fixedly mounted on one side of the rotating rod, a rotating connecting rod rotatably mounted on the rotating rod, and a large extrusion disc in threaded connection with the rotating rod. A large extrusion groove matched with the large extrusion disc is formed in one side of the rotating connecting rod, a movable square plate is integrally formed at the bottom end of the large extrusion disc, a movable groove matched with the large extrusion disc is formed in the supporting base, a first pull rod is slidably installed in the rotating connecting rod, a second pull rod is slidably installed in the first pull rod, and a rotating disc is rotatably installed at the top end of the second pull rod. A rotating block is fixedly installed at the top end of the rotating disc and rotationally provided with a connecting rotating block. According to the utility model, a plurality of components are matched to store the folding chair, so that the folding chair is more convenient to carry, the angle can be freely adjusted, and the folding chair can meet the requirements of different people in different occasions.

Description

Technical Field

[0001] The utility model relates to the technical field of microphones, in particular to a dual-directional sound pickup silicon microphone. Background Art

[0002] The working principle of the dual-directional pickup silicon microphone is to subtract the two signals through a differential amplifier and then amplify them to obtain an enhanced sound signal. Secondly, they have a wide range of uses, from mobile phones, hearing aids, smart speakers, computers to vehicles. In addition, the directivity of the dual-directional pickup silicon microphone refers to the sensitivity of the microphone when the sound wave is incident at an angle of θ. Common directivities include omnidirectional, figure-8, cardioid, etc., while the dual directivity is achieved by setting the rear sound hole so that the silicon microphone can achieve a dual-directional pickup range, and the front sound hole and the rear sound hole are facing the direction where the sound needs to be picked up, so that the sound to be picked up is clearer.

[0003] The patent document with publication number CN205946167U discloses a dual-directional sound pickup silicon microphone. The silicon microphone of the utility model includes a shell and a circuit board. The shell covers the circuit board and forms a accommodating cavity. A MEMS sensor is arranged in the accommodating cavity. The MEMS sensor is electrically connected to the circuit board. The shell is provided with a front sound hole, and the circuit board is provided with a rear sound hole. The MEMS sensor covers the rear sound hole.

[0004] In the above technical solution, sound is collected through the MEMS sensor and the rear sound hole opened on the circuit board and the front sound hole opened on the shell. The whole structure needs to be fixed in the recording device, which is inconvenient to carry and cannot adapt to different occasions and people. Therefore, we propose a dual-directional sound pickup silicon microphone to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to provide a dual-directional sound pickup silicon microphone to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A dual-directional sound pickup silicon microphone comprises: a supporting base, a rotating rod rotatably installed in the supporting base, a fixed handle fixedly installed on one side of the rotating rod, a rotating connecting rod rotatably installed on the rotating rod, a large extrusion disk threadedly connected to the rotating rod, a large extrusion groove matching the large extrusion disk is provided on one side of the rotating connecting rod, a movable square plate is integrally formed at the bottom of the large extrusion disk, a movable groove matching the large extrusion disk is provided in the supporting base, a first pull rod is slidably installed in the rotating connecting rod, a second pull rod is slidably installed in the first pull rod, a rotating disk is rotatably installed on the top of the second pull rod, a rotating block is fixedly installed on the top of the rotating disk, a connecting rotary block is rotatably installed on the rotating block, and a microphone is fixedly installed on the top of the connecting rotary block.

[0008] Preferably, a rotating rod is rotatably mounted on the rotating block, and a rotating hole matching the rotating rod is provided on the rotating block and the connecting rotating block. A small extrusion disk is threadedly connected to the rotating rod, and a small extrusion groove matching the small extrusion disk is provided on one side of the connecting rotating block. A fixed round block is fixedly mounted on one side of the rotating block, and the fixed round block movably abuts against one side of the connecting rotating block.

[0009] Preferably, a large spring is fixedly installed in the second pull rod, a lower rotating plate is fixedly installed on the top of the large spring, an upper rotating plate is fixedly installed on the bottom of the rotating disk, a plurality of triangular blocks are integrally formed on the top of the lower rotating plate, and a triangular groove matching the lower rotating plate is opened at the bottom of the upper rotating plate.

[0010] Preferably, sliding grooves are provided on both sides of the second pull rod, a second spring is fixedly installed in the sliding groove, a second buckle is fixedly installed on one side of the second spring, and two second buckle grooves matching the second buckle are respectively provided on both sides of the inner wall of the first pull rod.

[0011] Preferably, movable grooves are provided on both sides of the first pull rod, a first spring is fixedly installed in the movable groove, a first buckle is fixedly installed on one side of the first spring, and two first buckle grooves matching the first buckle are respectively provided on both sides of the inner wall of the rotating connecting rod.

[0012] Preferably, a circular groove is formed on the second pull rod, a telescopic rod is fixedly installed in the circular groove, the top end of the telescopic rod is fixedly connected to the lower rotating plate, the lower rotating plate is slidably installed in the circular groove, and the large spring is fixedly installed in the circular groove.

[0013] Preferably, a sliding square plate is integrally formed at the bottom of the small extrusion disk, a sliding square groove matching the sliding square plate is provided at the top of the rotating disk, a plurality of support blocks are fixedly installed at the bottom of the support base, and a placement groove matching the rotating connecting rod is provided on the support base.

[0014] In the utility model, the described bidirectional sound pickup silicon microphone, by rotating the fixed handle, allows the fixed handle to drive the rotating rod to rotate, drives the large extrusion disk to move along the moving groove provided on the supporting base, releases the extrusion of the rotating connecting rod, allows the rotating connecting rod to adjust the angle, and then rotates the microphone, allows the microphone to drive the connecting rotating block to rotate, the connecting rotating block drives the rotating block, the rotating disk and the upper rotating plate to rotate, allows the upper rotating plate to squeeze the lower rotating plate, allows the lower rotating plate to be pressed down by the large spring, rotates the microphone to a suitable angle, and then stores it;

[0015] In the utility model, the dual-directional sound pickup silicon microphone is adjusted by rotating the fixed handle to move the large extrusion plate when it is used, and then the microphone can be pulled to adjust the height. The first pull rod and the second pull rod are adjusted in height by the cooperation of the first spring, the first buckle, the second spring, and the second buckle. Then the microphone can be rotated to adjust left and right. The upper rotating plate is restricted by the cooperation of the lower rotating plate, the large spring, and the telescopic rod to facilitate left and right adjustment. Finally, the small extrusion plate can be controlled to move by rotating the fixed round block to adjust its angle.

[0016] The utility model has a reasonable structural design and can be stored by the cooperation of multiple parts, making it more convenient to carry and can be freely adjusted in angle to meet the needs of different occasions and different people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a dual-directional sound pickup silicon microphone proposed by the utility model;

[0018] Figure 2 It is a partial structural cross-sectional schematic diagram of a dual-directional sound pickup silicon microphone proposed by the utility model;

[0019] Figure 3 It is a schematic cross-sectional view of the local structure of a dual-directional sound pickup silicon microphone proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the partial structural disassembly of a dual-directional sound pickup silicon microphone proposed by the utility model.

[0021] In the figure: 1. support base; 2. microphone; 3. rotating connecting rod; 4. support block; 5. rotating rod; 6. large extrusion disk; 7. fixed handle; 8. rotating disk; 9. rotating block; 10. small extrusion disk; 11. rotating rod; 12. fixed round block; 13. first pull rod; 14. second pull rod; 15. first spring; 16. first buckle; 17. second spring; 18. second buckle; 19. large spring; 20. lower rotating plate; 21. telescopic rod; 22. upper rotating plate; 23. connecting rotating block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-4 A bidirectional sound pickup silicon microphone comprises: a supporting base 1, a rotating rod 5 is rotatably installed in the supporting base 1, a fixed handle 7 is fixedly installed on one side of the rotating rod 5, a rotating connecting rod 3 is rotatably installed on the rotating rod 5, a large extrusion disk 6 is threadedly connected on the rotating rod 5, a large extrusion groove matching the large extrusion disk 6 is opened on one side of the rotating connecting rod 3, a movable square plate is integrally formed at the bottom of the large extrusion disk 6, a movable groove matching the large extrusion disk 6 is opened in the supporting base 1, a first pull rod 13 is slidably installed in the rotating connecting rod 3, a second pull rod 14 is slidably installed in the first pull rod 13, a rotating disk 8 is rotatably installed on the top of the second pull rod 14, a rotating block 9 is fixedly installed on the top of the rotating disk 8, a connecting rotary block 23 is rotatably installed on the rotating block 9, and a microphone 2 is fixedly installed on the top of the connecting rotary block 23.

[0024] In this embodiment, a rotating rod 11 is rotatably installed on the rotating block 9, and a rotating hole matching the rotating rod 11 is provided on the rotating block 9 and the connecting rotating block 23. A small extrusion disk 10 is threadedly connected to the rotating rod 11, and a small extrusion groove matching the small extrusion disk 10 is provided on one side of the connecting rotating block 23. A fixed round block 12 is fixedly installed on one side of the rotating block 9, and the fixed round block 12 is movably abutted against one side of the connecting rotating block 23 for better angle adjustment. A large spring 19 is fixedly installed in the second pull rod 14, and a lower rotating plate 20 is fixedly installed on the top of the large spring 19. An upper rotating plate 22 is fixedly installed on the bottom end of the rotating disk 8. A plurality of triangular blocks are integrally formed on the top of the lower rotating plate 20, and a triangular groove matching the lower rotating plate 20 is provided at the bottom end of the upper rotating plate 22, which imposes certain restrictions when adjusting left and right.

[0025] In this embodiment, sliding grooves are provided on both sides of the second pull rod 14, and a second spring 17 is fixedly installed in the sliding groove. A second buckle 18 is fixedly installed on one side of the second spring 17. Two second buckle grooves matching the second buckle 18 are respectively provided on both sides of the inner wall of the first pull rod 13 to better control the length. Moving grooves are provided on both sides of the first pull rod 13, and a first spring 15 is fixedly installed in the moving groove. A first buckle 16 is fixedly installed on one side of the first spring 15. Two first buckle grooves matching the first buckle 16 are respectively provided on both sides of the inner wall of the rotating connecting rod 3 to better lengthen.

[0026] In this embodiment, a circular groove is opened on the second pull rod 14, and a telescopic rod 21 is fixedly installed in the circular groove. The top of the telescopic rod 21 is fixedly connected to the lower rotating plate 20. The lower rotating plate 20 is slidably installed in the circular groove. The large spring 19 is fixedly installed in the circular groove for better rotation.

[0027] In this embodiment, a sliding square plate is integrally formed at the bottom of the small extrusion disk 10, a sliding square groove matching the sliding square plate is provided at the top of the rotating disk 8, a plurality of support blocks 4 are fixedly installed at the bottom of the support base 1, and a placement groove matching the rotating connecting rod 3 is provided on the support base 1 for better support.

[0028] In the present embodiment, when in use, by rotating the fixed handle 7, the fixed handle 7 drives the rotating rod 5 to rotate, and the large extrusion disk 6 threadedly connected to the rotating rod 5 moves along with the moving groove provided on the supporting base 1 to release the extrusion on the rotating connecting rod 3, so that the rotating connecting rod 3 can be adjusted in angle, and then the microphone 2 is rotated, and the microphone 2 drives the connecting rotating block 23 to rotate, and the connecting rotating block 23 drives the rotating block 9, the rotating disk 8 and the upper rotating plate 22 to rotate, and the upper rotating plate 22 squeezes the lower rotating plate 20, and the lower rotating plate 20 is pressed down with the large spring 19 to rotate the microphone 2 to a suitable angle, and then the fixed round block 12 is rotated to allow the small extrusion disk 10 to release the extrusion on the connecting rotating block 23, and then the rotating connecting rod 3 is rotated to transfer it onto the supporting base 1. In the placement slot opened, adjust the angle of the microphone 2 at the same time, so that the bottom end of the microphone 2 coincides with the top end of the supporting base 1, and then it can be restricted by the fixed handle 7. When it is to be used, the fixed handle 7 is rotated to move the large extrusion disk 6 for adjustment, and then the microphone 2 can be pulled to adjust the height. The first spring 15, the first buckle 16 and the second spring 17, the second buckle 18 cooperate to adjust the height of the first pull rod 13 and the second pull rod 14, and then the microphone 2 can be rotated to adjust left and right. The upper rotating plate 22 is restricted by the cooperation of the lower rotating plate 20, the large spring 19 and the telescopic rod 21 to facilitate left and right adjustment. Finally, the small extrusion disk 10 can be controlled to move by rotating the fixed round block 12 to adjust its angle.

[0029] The above is a detailed introduction to a dual-directional sound pickup silicon microphone provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A dual-directional sound pickup silicon microphone, characterized in that: include: A support base (1), wherein a rotating rod (5) is rotatably installed in the support base (1), a fixed handle (7) is fixedly installed on one side of the rotating rod (5), a rotating connecting rod (3) is rotatably installed on the rotating rod (5), a large extrusion disk (6) is threadedly connected to the rotating rod (5), a large extrusion groove matching the large extrusion disk (6) is opened on one side of the rotating connecting rod (3), a movable square plate is integrally formed at the bottom end of the large extrusion disk (6), a movable groove matching the large extrusion disk (6) is opened in the support base (1), a first pull rod (13) is slidably installed in the rotating connecting rod (3), a second pull rod (14) is slidably installed in the first pull rod (13), a rotating disk (8) is rotatably installed on the top of the second pull rod (14), a rotating block (9) is fixedly installed on the top of the rotating disk (8), a connecting rotary block (23) is rotatably installed on the rotating block (9), and a microphone (2) is fixedly installed on the top of the connecting rotary block (23).

2. The dual-directional sound pickup silicon microphone according to claim 1, characterized in that: A rotating rod (11) is rotatably mounted on the rotating block (9); a rotating hole matching the rotating rod (11) is provided on the rotating block (9) and the connecting rotating block (23); a small extrusion disk (10) is threadedly connected to the rotating rod (11); a small extrusion groove matching the small extrusion disk (10) is provided on one side of the connecting rotating block (23); a fixed round block (12) is fixedly mounted on one side of the rotating block (9); and the fixed round block (12) is movably abutted against one side of the connecting rotating block (23).

3. The dual-directional sound pickup silicon microphone according to claim 1, characterized in that: A large spring (19) is fixedly installed inside the second pull rod (14), a lower rotating plate (20) is fixedly installed on the top of the large spring (19), an upper rotating plate (22) is fixedly installed on the bottom of the rotating disk (8), a plurality of triangular blocks are integrally formed on the top of the lower rotating plate (20), and a triangular groove matching the lower rotating plate (20) is formed on the bottom of the upper rotating plate (22).

4. The dual-directional sound pickup silicon microphone according to claim 1, characterized in that: The second pull rod (14) is provided with sliding grooves on both sides, a second spring (17) is fixedly installed in the sliding groove, a second buckle (18) is fixedly installed on one side of the second spring (17), and two second buckle grooves matching the second buckle (18) are respectively provided on both sides of the inner wall of the first pull rod (13).

5. The dual-directional sound pickup silicon microphone according to claim 1, characterized in that: The first pull rod (13) is provided with movable grooves on both sides, a first spring (15) is fixedly installed in the movable groove, a first buckle (16) is fixedly installed on one side of the first spring (15), and two first buckle grooves matching the first buckle (16) are respectively provided on both sides of the inner wall of the rotating connecting rod (3).

6. The dual-directional sound pickup silicon microphone according to claim 3, characterized in that: The second pull rod (14) is provided with a circular groove, a telescopic rod (21) is fixedly installed in the circular groove, the top end of the telescopic rod (21) is fixedly connected to the lower rotating plate (20), the lower rotating plate (20) is slidably installed in the circular groove, and the large spring (19) is fixedly installed in the circular groove.

7. The dual-directional sound pickup silicon microphone according to claim 2, characterized in that: A sliding square plate is integrally formed at the bottom end of the small extrusion disk (10), a sliding square groove matching the sliding square plate is provided at the top end of the rotating disk (8), a plurality of support blocks (4) are fixedly mounted at the bottom end of the support base (1), and a placement groove matching the rotating connecting rod (3) is provided on the support base (1).

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