Microphone sound head and anti-vibration device thereof

Abstract

The utility model relates to a microphone sound head and an anti-vibration device thereof, and the anti-vibration device comprises an anti-vibration unit and a redundant anti-vibration unit. The shock-proof unit comprises an upper fixing ring, and a moving coil sound head, an upper shock-proof sleeve and an upper air chamber which are installed in the upper fixing ring and are sequentially assembled from top to bottom. The redundant anti-seismic unit is arranged on the lower side of the anti-seismic unit and comprises a lower air chamber, a lower anti-seismic sleeve and a lower fixing ring which are sequentially assembled from top to bottom. And the lower air chamber is tightly connected to the upper air chamber upwards, so that an anti-seismic space is defined by the upper air chamber, the lower air chamber, the lower anti-seismic sleeve and the lower fixing ring together. Therefore, when the microphone sound head receives external force vibration, a part of sound waves pass through the anti-vibration space and are reflected by the lower fixing ring to generate reverse vibration waves which are fed back to the moving coil sound head, and noise can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to a sound-speaking device, in particular to a sound head of a microphone. Background Art

[0002] An existing dynamic microphone capsule includes a mounting seat, a capsule and a shock-absorbing assembly mounted in the mounting seat, and an outer cover covering the upper side of the mounting seat. The shock-absorbing assembly includes a fixing ring arranged at the lower side of the capsule and a shock-absorbing rubber surrounding the outer circumference of the fixing ring. The setting of the shock-absorbing assembly can reduce the phenomenon that the capsule generates vibration noise caused by external force vibration.

[0003] However, since the shock-absorbing component only resists external vibrations through the elasticity of the shock-absorbing rubber, the anti-vibration effect is very limited. Furthermore, the shock-absorbing component is fixed between the sound head and the mounting seat with adhesive, and it takes time to wait for the adhesive to completely dry during the installation process, which is very time-consuming and not conducive to subsequent maintenance or parts recycling. Summary of the invention

[0004] The utility model aims to provide a shock-absorbing device for a microphone capsule which can overcome at least one disadvantage of the background technology.

[0005] The shock-absorbing device of the microphone capsule of the utility model comprises a shock-absorbing unit and a redundant anti-vibration unit. The shock-absorbing unit comprises an upper fixing ring, and a dynamic coil capsule, an upper shock-absorbing sleeve, and an upper air chamber which are installed in the upper fixing ring and are sequentially assembled from top to bottom. The redundant anti-vibration unit is arranged on the lower side of the shock-absorbing unit, and comprises a lower air chamber, a lower shock-absorbing sleeve, and a lower fixing ring which are sequentially assembled from top to bottom. The lower air chamber is in close contact with the upper air chamber upward, so that the upper air chamber, the lower air chamber, the lower shock-absorbing sleeve, and the lower fixing ring jointly define an anti-vibration space.

[0006] The utility model discloses a shock-absorbing device for a microphone sound head, wherein the upper air chamber is screwed and fixed to the lower side of the dynamic sound head through a screw-locking piece.

[0007] BCPI-240174 Page 2 / 5

[0008] In the shock-absorbing device of the microphone head of the utility model, the upper shock-absorbing sleeve surrounds the outer peripheral side of the upper air chamber.

[0009] The utility model discloses a shock-absorbing device for a microphone head, wherein the outer peripheral surface of the upper fixing ring is provided with a plurality of protrusions protruding radially outward, and the lower shock-absorbing sleeve is provided with a number of positioning grooves which are radially penetrated and open upward and are equal to the number of the protrusions, the lower shock-absorbing sleeve is upwardly sleeved on the lower air chamber, and the positioning grooves are respectively upwardly engaged with the protrusions of the upper fixing ring.

[0010] The utility model discloses a shock-absorbing device for a microphone head, wherein the lower fixing ring is provided with hook grooves which are radially penetrated and open downwards and whose number is equal to the number of the protrusions. The lower fixing ring is pressed upwards against the lower shock-absorbing sleeve, and the hook grooves are respectively hooked on the protrusions of the upper fixing ring, so that the lower shock-absorbing sleeve is fixed between the lower air chamber, the upper fixing ring and the lower fixing ring.

[0011] In the vibration-proof device for the microphone capsule of the utility model, the redundant vibration-proof unit further comprises a sealing ring installed between the upper air chamber and the lower air chamber.

[0012] The utility model provides a shock-absorbing device for a microphone capsule, wherein the redundant anti-vibration unit further comprises a first acoustic damper, the bottom of the lower air chamber comprises a lower opening opening facing downward, and the first acoustic damper is fixed to the bottom of the lower air chamber and covers the lower opening opening.

[0013] In the shock-absorbing device of the microphone capsule of the utility model, the redundant anti-vibration unit further comprises a second acoustic damper, the top of the lower air chamber comprises an upper opening which opens upward and is connected to the lower opening, and the second acoustic damper covers the upper opening.

[0014] Another object of the present invention is to provide a microphone capsule that can overcome at least one disadvantage of the background art.

[0015] The microphone head of the utility model comprises a shock absorbing device, a fixing plate, an extension ring, and an inner mesh head of the microphone head. The fixing plate is arranged on the upper side of the shock absorbing unit. The extension ring is arranged on the outer peripheral side of the upper fixing ring. The inner mesh head is installed on the extension ring and covers the upper side of the shock absorbing unit.

[0016] The microphone head of the utility model further comprises a base arranged at the lower side of the extension ring, and an outer cover installed on the base and covering the upper side of the inner mesh head.

[0017] The beneficial effect of the utility model is that through the setting of the redundant anti-vibration unit, when the microphone head receives external force vibration, the upper shock-absorbing sleeve of the shock-absorbing unit can absorb a part of the shock wave, and the other part of the sound wave passes through the anti-vibration space and is reflected by the lower fixing ring BCPI-240174 Page 3 / 5 to generate a reverse shock wave to feed back to the dynamic sound head, thereby effectively reducing the noise generated by external force vibration. Furthermore, the shock-absorbing unit and the redundant anti-vibration unit are both assembled and connected to each other, which can improve the efficiency of installation compared to the prior art of fixing with adhesive, and is conducive to subsequent maintenance or recycling of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a three-dimensional diagram of an embodiment of the microphone head of the utility model;

[0020] Figure 2 is a perspective exploded view of the embodiment;

[0021] Figure 3 is a side cross-sectional view of the embodiment. DETAILED DESCRIPTION

[0022] See also Figure 1 , 2 An embodiment of the microphone head 1 of the utility model comprises a shock-absorbing device 2, an outer cover 5, an inner mesh head 6, a fixing plate 7, an extension ring 8, and a base 9.

[0023] The shock absorbing device 2 includes a shock absorbing unit 3 and a redundant anti-vibration unit 4. The shock absorbing unit 3 includes an upper fixing ring 31, and a dynamic sound head 32, an upper shock absorbing sleeve 33, and an upper air chamber 34 which are installed in the upper fixing ring 31 and assembled in sequence from top to bottom. The upper air chamber 34 is screwed to the lower side of the dynamic sound head 32 by a screw lock 35. The upper shock absorbing sleeve 33 surrounds the outer peripheral side of the upper air chamber 34. The outer peripheral surface of the upper fixing ring 31 is provided with four protrusions 311 protruding radially outward.

[0024] See also Figure 3 The redundant anti-vibration unit 4 is arranged at the lower side of the shock absorbing unit 3, and comprises a lower air chamber 41, a lower shock absorbing sleeve 42, a lower fixing ring 43, a sealing ring 44, a first acoustic damper 45, and a second acoustic damper 46, which are sequentially assembled from top to bottom. The bottom of the lower air chamber 41 has a lower opening 402 with an opening facing downward, and the top has an upper opening 403 with an opening facing upward and connected to the lower opening 402. The lower air chamber 41 is located in the upper fixing ring 31, and the lower shock absorbing sleeve 42 and the lower fixing ring 43 are exposed from the upper fixing ring 31.

[0025] The sealing ring 44 is installed between the upper air chamber 34 and the lower air chamber 41.

[0026] In the embodiment, the sealing ring 44 is an O-ring.

[0027] The first acoustic damper 45 is fixed to the bottom of the lower air chamber 41 and covers the lower opening 402, and the second acoustic damper 46 covers the upper opening 403. In this embodiment, the first acoustic damper 45 and the second acoustic damper 46 are formed by stacking multiple pieces of acoustic damping materials, but in other embodiments of the present invention, this is not limited to the above, and the first acoustic damper 45 and the second acoustic damper 46 can also be a single piece of acoustic damping material.

[0028] The lower shock-absorbing sleeve 42 is sleeved on the lower opening 402 of the lower air chamber 41, and is provided with positioning grooves 404, which are radially penetrated and open upward, and the number of which is equal to the number of the protrusions 311. The lower shock-absorbing sleeve 42 is upwardly engaged with the protrusions 311 of the upper fixing ring 31 by the positioning grooves 404. The lower fixing ring 43 is provided with hook grooves 405, which are radially penetrated and open downward, and the number of which is equal to the number of the protrusions 311. The lower fixing ring 43 is upwardly pressed against the lower shock-absorbing sleeve 42, and the hook grooves 405 are respectively hooked with the protrusions 311 of the upper fixing ring 31, so that the lower shock-absorbing sleeve 42 is tightly fixed between the lower air chamber 41, the upper fixing ring 31 and the lower fixing ring 43.

[0029] In this embodiment, the upper shock-absorbing sleeve 33 and the lower shock-absorbing sleeve 42 are made of silicone.

[0030] Since the lower air chamber 41 is in close contact with the upper air chamber 34 upwards through the sealing ring 44, and the lower shock-absorbing sleeve 42 and the lower fixing ring 43 are airtightly installed on the lower side of the lower air chamber 41, the upper air chamber 34, the lower air chamber 41, the lower shock-absorbing sleeve 42, and the lower fixing ring 43 jointly define an anti-vibration space 401. The anti-vibration space 401 is a closed space that is not connected to the outside except that it is connected to the dynamic sound head 32 upwards. When the microphone sound head 1 receives external force vibration, part of the shock wave is absorbed by the upper shock-absorbing sleeve 33 of the shock-absorbing unit 3, and the other part of the shock wave passes through the anti-vibration space 401 and is transmitted downwards. After being adjusted by the first sound damping 45 and the second sound damping 46 in sequence, the shock wave is reflected in the lower fixing ring 43 to generate a reverse shock wave that is fed back to the dynamic sound head 32, thereby effectively reducing the noise generated by the external force vibration. Furthermore, because the second acoustic damper 46 and the first acoustic damper 45 are respectively disposed on the upper and lower sides of the lower air chamber 41 , they have a series superposition effect, which is suitable for more subtle optimization and correction.

[0031] The fixing plate 7 is arranged on the upper side of the upper fixing ring 31 of the shock absorbing unit 3. The extension ring 8 is arranged on the outer peripheral side of the upper fixing ring 31. The inner mesh head 6 is installed on the extension ring 8 and covers the upper side of the shock absorbing unit 3. The base 9 is arranged on the extension ring 8.

[0032] The outer cover 5 is mounted on the extension ring 8 and covers the upper side of the inner mesh head 6.

[0033] In the present embodiment, the number of the protrusion 311 of the upper fixing ring 31, the positioning groove 404 of the lower shock-absorbing sleeve 42, and the hook groove 405 of the lower fixing ring 43 are all four, but this is not limited to other variations and implementations of the present invention, and can also be one, two, three, etc., as long as the number of the protrusion 311 of the upper fixing ring 31, the positioning groove 404 of the lower shock-absorbing sleeve 42, and the hook groove 405 of the lower fixing ring 43 corresponds to each other.

[0034] In summary, the microphone head 1 and its shock-absorbing device 2 of the utility model, when the microphone head 1 receives external force vibration, the upper shock-absorbing sleeve 33 of the shock-absorbing unit 3 can absorb a part of the shock wave, and through the setting of the redundant anti-vibration unit 4, another part of the sound wave passes through the anti-vibration space 401, and is reflected by the lower fixing ring 43 to generate a reverse shock wave to feedback to the dynamic head 32, thereby effectively reducing the noise generated by the external force vibration. On the other hand, the shock-absorbing unit 3 and the redundant anti-vibration unit 4 are both assembled and connected to each other, which can improve the efficiency of installation compared to the prior art method of fixing with adhesive, and is conducive to subsequent maintenance or recycling of parts, so the purpose of the utility model can be achieved.

[0035] The above are merely embodiments of the present invention and should not be used to limit the scope of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention still fall within the scope of the present invention.

Claims

1. A shock-absorbing device for a microphone capsule, characterized in that: Include: The shock-absorbing unit comprises an upper fixing ring, and a dynamic sound head, an upper shock-absorbing sleeve, and an upper air chamber which are installed in the upper fixing ring and assembled in sequence from top to bottom; and The redundant anti-vibration unit is arranged at the lower side of the shock-absorbing unit, and includes a lower air chamber, a lower shock-absorbing sleeve, and a lower fixing ring which are sequentially assembled from top to bottom. The lower air chamber is closely connected to the upper air chamber upward, so that the upper air chamber, the lower air chamber, the lower shock-absorbing sleeve, and the lower fixing ring jointly define an anti-vibration space.

2. The shock-absorbing device for a microphone capsule according to claim 1, characterized in that: The upper air chamber is screwed and fixed to the lower side of the dynamic sound head through a screw lock piece.

3. The shock-absorbing device for a microphone capsule according to claim 1, characterized in that: The upper shock-absorbing sleeve surrounds the outer peripheral side of the upper air chamber.

4. The shock-absorbing device for a microphone capsule according to claim 1, characterized in that: The outer circumferential surface of the upper fixing ring is provided with a plurality of protrusions protruding radially outward, and the lower shock-absorbing sleeve is provided with a number of positioning grooves which are radially penetrated and open upward and are equal to the number of the protrusions. The lower shock-absorbing sleeve is upwardly sleeved on the lower air chamber, and the positioning grooves are respectively upwardly engaged with the protrusions of the upper fixing ring.

5. The shock-absorbing device for a microphone capsule according to claim 4, characterized in that: The lower fixing ring is provided with hook grooves which are radially penetrated and open downwards, and the number of the hook grooves is equal to the number of the protrusions. The lower fixing ring is pressed upwards against the lower shock-absorbing sleeve, and the hook grooves are respectively hooked on the protrusions of the upper fixing ring, so that the lower shock-absorbing sleeve is fixed between the lower air chamber, the upper fixing ring and the lower fixing ring.

6. The shock-absorbing device for a microphone capsule according to claim 1, characterized in that: The redundant anti-vibration unit further includes a sealing ring installed between the upper air chamber and the lower air chamber.

7. The shock-absorbing device for a microphone capsule according to claim 1, characterized in that: The redundant anti-vibration unit further includes a first acoustic damper. The bottom of the lower air chamber has a lower opening opening facing downward. The first acoustic damper is fixed to the bottom of the lower air chamber and covers the lower opening opening.

8. The shock-absorbing device for a microphone capsule according to claim 7, characterized in that: The redundant anti-vibration unit further includes a second acoustic damper, the top of the lower air chamber has an upper opening which opens upward and is connected to the lower opening, and the second acoustic damper covers the upper opening.

9. A microphone capsule, characterized in that: Include: A shock-absorbing device for a microphone capsule according to any one of claims 1 to 8; A fixing plate, arranged on the upper side of the shock absorbing unit; An extension ring, disposed on the outer circumference of the upper fixing ring; and The inner net head is installed on the extension ring and covers the upper side of the shock absorbing unit.

10. The microphone capsule according to claim 9, characterized in that: The microphone head also includes a base arranged at the lower side of the extension ring, and an outer cover installed on the base and covering the upper side of the inner mesh head.

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