Microphone charcoal box assembly

Abstract

The utility model belongs to the technical field of microphones, and provides a microphone charcoal box assembly, which comprises a heat-insulating sealing shell, a heat-conducting block is arranged at the lower end of the heat-insulating sealing shell, a plurality of through holes V are formed in the surface of the heat-conducting block, and a heat-insulating pad is arranged at the lower end of the heat-conducting block; the motor drives the fan blades to rotate around the driving disc to generate swirling airflow around the heat conduction block, heat and moisture of the charcoal box assembly are taken away by means of airflow flowing, the drying rods can absorb part of moisture in the charcoal box assembly, the heat conduction block can absorb heat in the airflow, and the heat conduction columns conduct the heat in the airflow to the heat conduction block. The heat conduction columns enhance the effect that the heat conduction block absorbs heat in the charcoal box assembly, and the heat dissipation fins enlarge the heat dissipation area of the heat conduction block so that the heat conduction block can dissipate more heat out of the charcoal box assembly, and the humidity and temperature in the charcoal box assembly can be reduced. The problem that the anti-wind performance of an existing microphone carbon box assembly is easily affected by the change of environment temperature and humidity is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of microphones, and provides a carbon microphone cartridge assembly. Background Art

[0002] A microphone is a conversion device that converts sound signals into electrical signals. The structure of a carbon microphone mainly consists of a carbon disk and a diaphragm, with loosely contacting carbon grains filled between them; when sound acts on the diaphragm, it causes the diaphragm to vibrate, changing the tightness of the contact between the carbon grains. This change causes the resistance of the carbon grains to change, thereby changing the magnitude of the current in the circuit; as the sound changes, the elastic diaphragm can vibrate irregularly in response to sound waves, converting the sound signal into an electrical signal, enabling the microphone to achieve the effect of sound collection, and the collected sound is output in the form of an electrical signal.

[0003] Affected by the use environment, the carbon microphone cartridge assembly is vulnerable to changes in environmental temperature and humidity. A high-humidity environment can cause the carbon cartridge to get damp, and high temperatures can accelerate the aging, cracking, and deformation of the carbon cartridge, affecting the performance of the microphone. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and solve the problem that the existing carbon microphone cartridge assembly is easily affected by changes in environmental temperature and humidity, which affects the performance of the microphone.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a carbon microphone cartridge assembly, including a heat-insulating and sealing shell:

[0006] A heat-conducting block is installed at the lower end of the heat-insulating and sealing shell. A plurality of through holes five are formed on the surface of the heat-conducting block. A heat-insulating pad is installed at the lower end of the heat-conducting block. A driving disk is arranged below the heat-insulating pad, and multiple fan blades are fixed on the outer surface of the driving disk;

[0007] A cavity is formed at the lower end of the heat-insulating and sealing shell. A carbon disk is arranged inside the heat-insulating and sealing shell. A plurality of through holes four are formed at the lower end of the carbon disk, and the through holes four communicate with the cavity;

[0008] A carbon grain box is arranged inside the carbon disk, and multiple drying rods are arranged around the periphery of the carbon grain box;

[0009] A plurality of through holes six communicating with the inside of the carbon grain box are formed at the lower end of the carbon grain box. A shielding sheet is inlaid at the upper end of the carbon grain box, and a through hole two communicating with the inside of the carbon grain box is formed on the surface of the shielding sheet;

[0010] A ring is threadedly connected to the upper end of the heat-insulating and sealing shell, and a diaphragm located above the carbon grain box is installed on the inner wall of the ring.

[0011] In a preferred technical solution of the utility model, a plurality of cooling fins are fixed to the periphery of the heat conductive block, a motor is transmission-connected to the lower end of the driving disk, a junction box is installed on either side of the outer surface of the heat insulating sealing shell, and the junction box is respectively connected to the vibration membrane, the carbon disk, and the carbon particle box through wires, and a five-millimeter spacing is maintained between the driving disk and the heat insulating pad.

[0012] In a preferred technical solution of the utility model, a plurality of pads surrounding the cavity are fixed to the bottom end of the heat-insulating sealed shell, and the pads are tightly attached to the lower end of the carbon disc.

[0013] In a preferred technical solution of the utility model, a lower spacer located below the carbon particle box is provided at the bottom inner end of the carbon concentrate disk, and a distance of more than five millimeters is maintained between the lower spacer and the carbon particle box. A plurality of through holes three which are connected with through holes four are provided on the surface of the lower spacer, and the through holes three and six are staggered with each other.

[0014] In a preferred technical solution of the utility model, a heat-conducting column is interspersed on the inner center line of the charcoal particle box and penetrates downward to the upper end of the heat-conducting block. The heat-conducting block and the heat-conducting column are filled with thermal grease. The charcoal particle box is filled with charcoal particles surrounding the heat-conducting column. The shielding sheet covers the upper surface of the charcoal particles. Ring brackets surrounding the charcoal particle box are inserted at the upper and lower ends of the multiple drying rods, and the drying rods are filled with desiccant.

[0015] In a preferred technical solution of the utility model, an upper spacer is arranged between the vibration membrane and the shielding plate, and a distance of more than five millimeters is maintained between the upper spacer and the shielding plate. A plurality of through holes 1 are opened on the surface of the upper spacer, and the through holes 1 and 2 are staggered with each other.

[0016] Compared with the prior art, the utility model achieves the following beneficial effects:

[0017] The motor drives the fan blade to rotate around the driving disk, generating a swirling air current around the heat conduction block. The swirling air current causes the atmospheric pressure around the heat conduction block to be lower than the atmospheric pressure inside the carbon cartridge assembly. The air current inside the carbon cartridge assembly will flow outwards to the outside in sequence through through-hole one, through-hole two, through-hole six, through-hole three, through-hole four, the cavity, and through-hole five. When the air current flows from the inside to the outside in the carbon cartridge assembly, it will flow past the drying rod, the heat conduction column, and the surface of the heat conduction block respectively. Relying on the air current flow, the heat and moisture of the carbon cartridge assembly are taken away. The drying rod can absorb part of the moisture inside the carbon cartridge assembly, the heat conduction block can absorb the heat in the air current, the heat conduction column conducts the heat in the air current to the heat conduction block, and the heat conduction column strengthens the effect of the heat conduction block absorbing the heat inside the carbon cartridge assembly. The heat dissipation fins increase the heat dissipation area of the heat conduction block so that the heat conduction block can dissipate more heat to the outside of the carbon cartridge assembly, reducing the humidity and temperature inside the carbon cartridge assembly, avoiding the carbon cartridge assembly from aging, cracking, and deforming due to high temperature and high humidity, and preventing adverse effects on performance. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall external structure of the present utility model;

[0019] Figure 2 Exploded view of the overall internal structure of the present utility model;

[0020] Figure 3 Cross-sectional view of the overall internal structure of the present utility model;

[0021] Figure 4 Schematic diagram of the external structure of the carbon granule box of the present utility model.

[0022] In the figure: 1. Vibration membrane; 2. Ring; 3. Upper spacer; 4. Shading sheet; 5. Ring support; 6. Drying rod; 7. Lower spacer; 8. Carbon disk; 9. Heat insulation and sealing shell; 10. Junction box; 11. Heat conduction column; 12. Carbon granule box; 13. Spacer block; 14. Cavity; 15. Heat conduction block; 16. Heat dissipation fins; 17. Heat insulation pad; 18. Fan blade; 19. Motor; 20. Driving disk; 21. Through-hole one; 22. Through-hole two; 23. Through-hole three; 24. Through-hole four; 25. Through-hole five; 26. Through-hole six. Detailed Description of the Invention

[0023] Please refer to Figures 1-4, the present utility model provides a technical solution: a carbon microphone cartridge assembly, including a heat-insulating and sealing shell 9, a heat-conducting block 15 is installed at the lower end of the heat-insulating and sealing shell 9, a plurality of through holes five 25 are opened on the surface of the heat-conducting block 15, a heat-insulating pad 17 is installed at the lower end of the heat-conducting block 15, a driving disk 20 is arranged below the heat-insulating pad 17, and a plurality of fan blades 18 are fixed on the outer surface of the driving disk 20; a cavity 14 is opened at the lower end of the heat-insulating and sealing shell 9, a carbon disk 8 is arranged inside the heat-insulating and sealing shell 9, a plurality of through holes four 24 are opened at the lower end of the carbon disk 8, and the through holes four 24 communicate with the cavity 14; a carbon granule box 12 is arranged inside the carbon disk 8, and a plurality of drying rods 6 are arranged around the periphery of the carbon granule box 12; a plurality of through holes six 26 communicating with the inside of the carbon granule box 12 are opened at the lower end of the carbon granule box 12, a shielding sheet 4 is inlaid at the upper end of the carbon granule box 12, and a through hole two 22 communicating with the inside of the carbon granule box 12 is opened on the surface of the shielding sheet 4; a ring 2 is threadedly connected to the upper end of the heat-insulating and sealing shell 9, and a vibration film 1 located above the carbon granule box 12 is installed on the inner wall of the ring 2; a junction box 10 is installed on any one side of the outer surface of the heat-insulating and sealing shell 9, and the junction box 10 is respectively connected to the vibration film 1, the carbon disk 8, and the carbon granule box 12 through wires. Relying on the junction box 10, it is convenient to connect the vibration film 1, the carbon disk 8, and the carbon granule box 12 to the microphone and form a circuit; a distance of five millimeters is maintained between the driving disk 20 and the heat-insulating pad 17. The heat-insulating pad 17 is installed as a support member of the carbon microphone cartridge assembly on the horizontal installation surface inside the microphone. The heat-insulating pad 17 keeps the part of the carbon microphone cartridge assembly above the heat-insulating pad 17 suspended from the upper end of the driving disk 20. The lower end of the driving disk 20 is drivingly connected to a motor 19. The motor 19 is installed at another position inside the microphone to support the driving disk 20. The motor 19 provides the power for the driving disk 20 to rotate. The motor 19 drives the driving disk 20 to rotate below the heat-insulating pad 17. The fan blades 18 revolve around the driving disk 20 as the driving disk 20 rotates. The motor 19 drives the fan blades 18 to rotate around the periphery of the driving disk 20 to generate a swirling air flow around the heat-conducting block 15. The swirling air flow makes the atmospheric pressure around the heat-conducting block 15 lower than the atmospheric pressure inside the carbon microphone cartridge assembly, and the air flow flows from top to bottom inside the carbon microphone cartridge assembly;

[0024] An upper spacer 3 is arranged between the vibration film 1 and the shielding sheet 4. The air flow flows through the surface of the upper spacer 3 from the lower end of the vibration film 1. A distance of more than five millimeters is maintained between the upper spacer 3 and the shielding sheet 4. A plurality of through holes one 21 are opened on the surface of the upper spacer 3. The air flow flows through the surface of the upper spacer 3 from below the vibration film and flows into the inside of the through holes one 21. The air flow flows from the inside of the through holes one 21 to the upper surface of the shielding sheet 4. The air flow flows from the upper surface of the shielding sheet 4 into the inside of the through hole two 22. The air flow flows from the inside of the through hole two 22 into the inside of the carbon granule box 12. The through holes one 21 and the through hole two 22 are laid staggeredly. Dust particles in the air will be blocked on the upper surface of the shielding sheet 4 to avoid the dust particles flowing along with the air flow and ensure the smoothness of the air flow;

[0025] A heat conducting column 11 is inserted through the center line inside the carbon granule box 12 and penetrates downward to the upper end of the heat conducting block 15. The inside of the carbon granule box 12 is filled with carbon granules surrounding the periphery of the heat conducting column 11. The shielding piece 4 covers the upper surface of the carbon granules. At both the upper and lower ends of the multiple drying rods 6, a ring support 5 surrounding the periphery of the carbon granule box 12 is sleeved. The upper and lower ring supports 5 connect the multiple drying rods 6 into an integrated ring-shaped structure. The ring support 5 surrounds the multiple drying rods 6 around the carbon granule box 12. The inside of the drying rod 6 is filled with a desiccant. Fine capillary pores are evenly distributed on the surface of the drying rod 6 and communicate with the desiccant, and the desiccant is relied on to absorb moisture in the air flow to make the air flow drier;

[0026] The air flow flows downward along the through hole two 22 into the inside of the carbon granule box 12. The air flow contacts the carbon granule box heat conducting column 11 inside the carbon granule box 12. The air flow flows downward to the through hole six 26. A lower spacer 7 located below the carbon granule box 12 is provided at the inner bottom end of the carbon electrode plate 8. The air flow flows from the through hole six 26 onto the surface of the lower spacer 7. Multiple through holes three 23 communicating with the through hole four 24 are provided on the surface of the lower spacer 7. The air flow flows along the lower spacer 7 into the through hole three 23. A distance of more than five millimeters is maintained between the lower spacer 7 and the carbon granule box 12, so that sufficient space is reserved between the lower spacer 7 and the carbon granule box 12. After the air flow passes through the through hole six 26, it is convenient for the air flow to flow between the lower spacer 7 and the carbon granule box 12, and the air flow passes through the through hole three 23 to penetrate the lower spacer 7 and flow downward into the through hole four 24 inside. The through hole three 23 and the through hole six 26 are staggeredly laid. Dust particles in the air will be blocked on the upper surface of the lower spacer 7, preventing the dust particles from flowing along with the air flow and ensuring the smoothness of the air flow;

[0027] Multiple pads 13 surrounding the cavity 14 are fixed to the inner bottom end of the heat insulation and sealing shell 9. The pads 13 are closely attached to the lower end of the carbon electrode plate 8. The pads 13 form a distance between the lower end of the carbon electrode plate 8 and the inner bottom end of the heat insulation and sealing shell 9 to facilitate the air flow to pass through the cavity 14. The air flow flows downward from the cavity 14 to the surface of the heat conducting block 15. The air flow flows along the upper surface of the heat conducting block 15 into the through hole five 25. The air flow flows out of the through hole five 25 around the heat conducting block 15 along this through hole five 25. The air flow flows out around the heat conducting block 15 to supplement the air flow around the heat conducting block 15. The above steps are repeated. The air flow passes through the surfaces of the heat conducting column 11 and the heat conducting block 15, and the heat adheres to the surfaces of the heat conducting column 11 and the heat conducting block 15. The heat conducting block 15 and the heat conducting column 11 are filled with heat conducting silicone grease. The heat in the air flow will be absorbed by the heat conducting silicone grease in the heat conducting column 11 and the heat conducting block 15;

[0028] The upper and lower ends of the heat-conducting column 11 respectively form support points on the central axis inside the carbon granule box 12 for the center of the inner bottom end of the carbon granule box 12 and the center of the lower end of the shielding piece 4. The heat-conducting column 11 props up the center of the lower end of the shielding piece 4 upward. The heat-conducting column 11 strengthens the stability of the shielding piece 4 at the upper end of the carbon granule box 12, and relies on the shielding piece 4 to tightly shield the carbon granules inside the carbon granule box 12;

[0029] Combining the above steps, the air flow inside the carbon cartridge assembly will successively flow to the outside along the first through hole 21, the second through hole 22, the sixth through hole 26, the third through hole 23, the fourth through hole 24, the cavity 14, and the fifth through hole 25, forming an effect that the air flow continuously flows from top to bottom inside the carbon cartridge assembly. When the air flow flows from inside to outside in the carbon cartridge assembly, it will respectively flow through the surfaces of the drying rod 6, the heat-conducting column 11, and the heat-conducting block 15. The drying rod 6 can absorb part of the moisture inside the carbon cartridge assembly, the heat-conducting block 15 can absorb the heat in the air flow, and the heat-conducting column 11 conducts the heat in the air flow to the heat-conducting block 15. The heat-conducting column 11 strengthens the effect of the heat-conducting block 15 absorbing the heat inside the carbon cartridge assembly;

[0030] As the air flow continuously flows from top to bottom inside the carbon cartridge assembly, the air flow continuously takes out the heat and moisture inside the carbon cartridge assembly. Relying on the air flow to take away the heat and moisture of the carbon cartridge assembly, multiple heat dissipation fins 16 are fixed around the heat-conducting block 15. The heat dissipation fins 16 increase the heat dissipation area of the heat-conducting block 15 so that the heat-conducting block 15 can dissipate more heat to the outside of the carbon cartridge assembly, reducing the accumulation of heat and moisture inside the low-carbon cartridge assembly, thereby reducing the humidity and temperature inside the carbon cartridge assembly, avoiding aging, cracking, and deformation of the carbon cartridge assembly due to high temperature and high humidity, and preventing adverse effects on performance;

[0031] Unscrew the ring 2 from the upper end of the heat-insulating and sealing shell 9, remove the ring 2, and then the vibration membrane 1 can be removed. Then, the upper spacer 3 can be removed in turn to expose the carbon granule box 12, the ring support 5 and the drying rod 6 around the carbon granule box 12. Remove the drying rod 6 by removing the ring support 5 around the carbon granule box 12, which is convenient for replacing the drying rod 6. Then, reinstall it according to the above steps to achieve the function of replacing the drying rod 6.

Claims

1. A microphone capsule assembly, comprising a heat-insulating sealed shell (9), characterized in that: A heat conducting block (15) is installed at the lower end of the heat insulating sealing shell (9), a plurality of through holes (25) are provided on the surface of the heat conducting block (15), a heat insulating pad (17) is installed at the lower end of the heat conducting block (15), a driving disk (20) is arranged below the heat insulating pad (17), and a plurality of fan blades (18) are fixed on the outer surface of the driving disk (20); A cavity (14) is provided at the lower end of the heat-insulating sealed shell (9), a carbon disc (8) is arranged inside the heat-insulating sealed shell (9), a plurality of through holes (24) are provided at the lower end of the carbon disc (8), and the through holes (24) are connected to the cavity (14); A carbon particle box (12) is arranged inside the carbon concentrate disk (8), and a plurality of drying rods (6) are arranged around the carbon particle box (12); The lower end of the carbon particle box (12) is provided with a plurality of through holes (26) which are communicated with the interior thereof, the upper end of the carbon particle box (12) is inlaid with a shielding sheet (4), and the surface of the shielding sheet (4) is provided with through holes (22) which are communicated with the interior of the carbon particle box (12); The upper end of the heat-insulating sealing shell (9) is threadedly connected with a ring (2), and the inner wall of the ring (2) is installed with a vibration membrane (1) located above the carbon particle box (12).

2. A microphone capsule assembly as claimed in claim 1, characterized in that: A plurality of heat dissipation fins (16) are fixed to the periphery of the heat conductive block (15); the lower end of the driving disk (20) is connected to a motor (19) in a transmission manner; a junction box (10) is installed on either side of the outer surface of the heat insulating sealing shell (9); the junction box (10) is respectively connected to the vibration membrane (1), the carbon disk (8), and the carbon particle box (12) through wires; and a five-millimeter spacing is maintained between the driving disk (20) and the heat insulating pad (17).

3. A microphone capsule assembly as claimed in claim 1, characterized in that: A plurality of pads (13) surrounding the cavity (14) are fixed to the inner bottom end of the heat-insulating sealing shell (9), and the pads (13) are tightly attached to the lower end of the carbon disc (8).

4. A microphone capsule assembly as claimed in claim 1, characterized in that: The bottom end of the carbon concentrate disc (8) is provided with a lower spacer (7) located below the carbon particle box (12), and a distance of more than five millimeters is maintained between the lower spacer (7) and the carbon particle box (12). A plurality of through holes (23) are provided on the surface of the lower spacer (7) and are connected to the through holes (24). The through holes (23) and the through holes (26) are staggered with each other.

5. The microphone capsule assembly according to claim 1, characterized in that: A heat-conducting column (11) is inserted on the inner center line of the carbon particle box (12) and penetrates downward to the upper end of the heat-conducting block (15); the heat-conducting block (15) and the heat-conducting column (11) are filled with thermal grease; the carbon particle box (12) is filled with carbon particles surrounding the outer periphery of the heat-conducting column (11); the shielding sheet (4) covers the upper surface of the carbon particles; the upper and lower ends of the plurality of drying rods (6) are both inserted with a ring support (5) surrounding the outer periphery of the carbon particle box (12); and the drying rods (6) are filled with desiccant.

6. The microphone capsule assembly according to claim 1, characterized in that: An upper spacer (3) is arranged between the vibration membrane (1) and the shielding plate (4), and a distance of more than five millimeters is maintained between the upper spacer (3) and the shielding plate (4). A plurality of through holes (21) are provided on the surface of the upper spacer (3), and the through holes (21) and the through holes (22) are arranged in a staggered manner.

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