Acoustic support and condenser microphone

Abstract

The utility model provides an acoustic support, comprising a pickup head frame which comprises a pickup head fixing ring and a vertical support column located below the pickup head fixing ring; the horizontal base plate is provided with a long hole, and a sliding rail is arranged in the circumferential direction of the long hole; the connecting ring is arranged on the periphery of the vertical supporting column in a sleeving mode so that the vertical supporting column can slide in the vertical direction; the connecting piece is fixedly connected with the connecting ring, the connecting piece comprises a lap joint part, and the lap joint part is embedded in the sliding rail and can slide in the horizontal direction. According to the acoustic support, the position of the pickup head fixing ring can be adjusted in the horizontal direction, so that the first distance between the vibrating diaphragm of the pickup head and the side plane is adjusted, and then the high-frequency directivity is adjusted; and the position of the pickup head fixing ring can be adjusted in the vertical direction, so that the second distance between the vibrating diaphragm of the pickup head and the bottom plane is adjusted, and then the low-frequency directivity is adjusted. The utility model also provides a condenser microphone comprising the acoustic support.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to an acoustic support and a condenser microphone. Background Technology

[0002] Traditional microphone designs typically employ fixed distances from the diaphragm to its bottom and side planes, resulting in a lack of flexibility in adjusting its frequency response and directivity. This fixed-distance design limits the microphone's adaptability and performance optimization across various applications. Some applications require microphones with different frequency responses and directivity. For example, in audio recording, a microphone needs to capture a wide frequency range and possess a relatively balanced frequency response. In conference rooms or presentation settings, a microphone with good directivity is needed to reduce interference from ambient noise and reflected sound. Utility Model Content

[0003] In view of this, the present invention proposes an acoustic support that can solve the aforementioned existing technical problems. The present invention provides the following technical solution:

[0004] The acoustic support according to this utility model includes: a microphone head frame, the microphone head frame including a microphone head fixing ring and a vertical support column located below the microphone head fixing ring; a horizontal base plate, the horizontal base plate having an elongated hole extending in the horizontal direction at its center, and a slide rail arranged circumferentially along the elongated hole; a connecting ring, the connecting ring being configured to be sleeved around the vertical support column so that the vertical support column can slide in the vertical direction; and a connector, the connector being fixedly connected to the connecting ring, the connector including an overlapping portion, the overlapping portion being configured to be fitted into the slide rail and able to slide in the horizontal direction along the slide rail.

[0005] Optionally, the vertical support column passes through the elongated hole, the microphone head fixing ring is located above the horizontal plane of the horizontal base plate, and the connecting ring and connector are located below the horizontal plane of the horizontal base plate.

[0006] Optionally, the connector is a U-shaped plate, the top of which has the overlapping portion, and the bottom of which has a snap-fit ​​mounting hole for installing the connecting ring.

[0007] Optionally, the connecting ring has a waistline groove, the shape and size of which match the shape and size of the snap-fit ​​mounting hole.

[0008] Optionally, the U-shaped plate is formed by stamping a metal plate.

[0009] Optionally, the connecting ring is made of an elastic material.

[0010] Optionally, the connecting ring has an elastic adjustment gap.

[0011] Optionally, the width of the elongated hole is greater than or equal to the width of the microphone head fixing ring, and the width of the elongated hole is greater than or equal to the diameter of the vertical support column.

[0012] Optionally, the center point of the pickup head fixing ring is located on the extension line of the axis of the vertical support column.

[0013] The condenser microphone according to this utility model includes: a pickup head, a protective cover, and an acoustic support proposed in this utility model, wherein the pickup head is fixed in the pickup head fixing ring, and the protective cover is used to cover the pickup head and the acoustic support.

[0014] According to the technical solution of this utility model, on the one hand, the position of the pickup head fixing ring can be adjusted in the horizontal direction, thereby adjusting the first distance between the diaphragm of the pickup head and the side plane, and thus adjusting the high-frequency directivity; on the other hand, the position of the pickup head fixing ring can be adjusted in the vertical direction, thereby adjusting the second distance between the diaphragm of the pickup head and the bottom plane, and thus adjusting the low-frequency directivity. This utility model has the advantages of simple structure, convenient use, easy adjustment, and wide applicability. Attached Figure Description

[0015] For illustrative and not limiting purposes, the present invention will now be described with reference to preferred embodiments, and particularly with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a three-dimensional schematic diagram of the acoustic support of this utility model;

[0017] Figure 2 This is a front view schematic diagram of the acoustic support of this utility model;

[0018] Figure 3 This is a side view of the acoustic support of this utility model;

[0019] Figure 4 This is a top view of the acoustic support of this utility model;

[0020] Figure 5 This is a bottom view of the acoustic support of this utility model.

[0021] Figure 6 This is a schematic diagram of the capacitor microphone of this utility model;

[0022] Figure 7 for Figure 6 The diagram shown is a front view of the condenser microphone with the protective mesh screen omitted.

[0023] Figure 8 for Figure 6 The diagram shown is a top view of the condenser microphone with the protective mesh screen omitted.

[0024] In the picture:

[0025] 1-Pickup head frame; 11-Pickup head fixing ring; 12-Vertical support column; 2-Horizontal base plate; 21-Slide rail; 3-Connecting ring; 4-Connector; 41-Overlapping part; 5-Pickup head; 6-Protective cover. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1 to 5 As shown, the acoustic support of this utility model mainly includes: a pickup head frame 1, a horizontal base plate 2, a connecting ring 3, and a connector 4.

[0029] The microphone head frame 1 includes a microphone head fixing ring 11 and a vertical support column 12 located below the microphone head fixing ring 11. The microphone head fixing ring 11 is used to fix the microphone head, and the vertical support column 12 is used to support the microphone head fixing ring 11. The center point of the microphone head fixing ring 11 can be located on the extension line of the axis of the vertical support column 12, so that the microphone head frame 1 is aesthetically pleasing and symmetrical, with a central center of gravity, and is easy to maintain vertical stability during installation and use. A symmetrical design is preferred. If an asymmetrical design is used, additional counterweights must be added to prevent the microphone head frame 1 from tilting or falling over due to its own weight when subjected to external forces. The fixing ring 11 can be made of a material with a certain degree of elasticity, such as rubber, to facilitate the installation and fixing of the microphone head, while also having the effect of shock absorption and reducing solid-borne noise. The vertical support column 12 can be made of a rigid material for structural support and fixing the position of the microphone head.

[0030] The horizontal base plate 2 has an elongated hole extending horizontally in the center, and a slide rail 21 is arranged circumferentially along the hole. The width of the elongated hole is greater than or equal to the width of the microphone head fixing ring 11, and the width of the elongated hole is greater than or equal to the diameter of the vertical support column 12. The "width" refers to the projected length of the object on the y-axis. Because the width of the elongated hole is wide enough, the microphone head frame 1 (including the microphone head fixing ring 11 and the vertical support column 12) can be drilled through the elongated hole as a whole and then removed from under the horizontal base plate 2. Therefore, if the microphone head malfunctions during product use, the microphone head frame 1 can be pulled down and removed without disassembling the horizontal base plate 2, and the faulty microphone head can be replaced.

[0031] The connecting ring 3 is configured to be sleeved around the vertical support column 12, allowing the vertical support column 12 to slide along the vertical direction. The connecting member 4 is fixedly connected to the connecting ring 3. The connecting member 4 includes an overlapping portion 41, which is configured to fit into the slide rail 21 and slide horizontally along the slide rail 21. This design means that, since the relative position of the connecting ring 3 and the vertical support column 12 is adjustable, the microphone head fixing ring 11 can move along the Z-axis, and consequently, the distance between the center point of the microphone head fixing ring 11 (i.e., the location of the microphone head) and the bottom plane is adjustable. Furthermore, since the relative position of the connecting member 4 and the horizontal base plate 2 is adjustable, the microphone head fixing ring 11 can move along the X-axis, and consequently, the distance between the center point of the microphone head fixing ring 11 (i.e., the location of the microphone head) and the side plane is adjustable.

[0032] Preferably, the vertical support column 12 can pass through the elongated hole, the microphone head fixing ring 11 is located above the horizontal plane of the horizontal base plate 2, and the connecting ring 3 and the connector 4 are located below the horizontal plane of the horizontal base plate 2. This allows the microphone head to operate above the horizontal base plate 2 during installation and use, while the connecting ring 3 and the connector 4 are hidden below the horizontal base plate 2, which is discreet and aesthetically pleasing, does not cause acoustic interference, and makes the overall center of gravity of the acoustic bracket low and more stable.

[0033] Preferably, the connector 4 can be a U-shaped plate with an overlapping portion 41 at the top and a snap-fit ​​mounting hole at the bottom for mounting the connecting ring 3. The connector 4 can also have other shapes and can be connected to the connecting ring 3 in other ways, such as riveting, welding, bolting, snap-fitting, etc.

[0034] The connecting ring 3 may have a waistline groove, the shape and size of which match the shape and size of the snap-fit ​​mounting hole. Size matching means that the vertical height of the waistline groove is equal to the thickness of the U-shaped plate, and the diameter of the connecting ring 3 at the waistline groove position is equal to the diameter of the snap-fit ​​mounting hole. In this way, the connecting ring 3 can be perfectly fitted into the snap-fit ​​mounting hole and will not loosen or fall off.

[0035] The U-shaped plate is preferably made of stamped metal sheet. Due to the inherent properties of metal, the metal sheet accumulates stress after processing and deformation. Under the action of this force, the overlapping portions 41 at both ends of the U-shaped plate tend to move outward and downward. This increases the pressure of the overlapping portions 41 on the slide rail 21, thereby increasing the friction between the overlapping portions 41 and the slide rail 21, allowing the overlapping portions 41 to be more stably embedded in the slide rail. The U-shaped plate can also be an injection-molded plastic part, which has the advantage of low cost.

[0036] The connecting ring 3 is preferably made of an elastic material, such as silicone, rubber, sponge, or other polymer materials, which are inexpensive and easy to process and install. The coefficient of friction between the elastic material and the vertical support column 12 is typically high, resulting in a large frictional force between the pickup head frame 1 and the connecting ring 3. This prevents relative displacement without external force, ensuring a stable and reliable relative position between the pickup head frame 1 and the connecting ring 3. As shown in the figure, the fixed connection between the pickup head frame 1 and the connecting ring 3 can be achieved without other auxiliary parts, resulting in a simple structure. Furthermore, the connecting ring 3, made of elastic material, can be moved on the outer surface of the vertical support column 12 by applying external force, facilitating adjustment.

[0037] To facilitate the installation and movement of the elastic material connecting ring 3, the connecting ring 3 may also have an elastic adjustment gap. Because the connecting ring 3 itself may deform under pressure or expand and contract with temperature changes, it is usually necessary to slightly adjust the shape of the connecting ring 3 in practice, and the narrow elastic adjustment gap can provide room for shaping operations.

[0038] As can be seen from the above, the acoustic bracket of this utility model can, on the one hand, adjust the position of the pickup head fixing ring in the horizontal direction, thereby adjusting the first distance between the pickup head diaphragm and the side plane, and thus adjusting the high-frequency directivity; on the other hand, it can adjust the position of the pickup head fixing ring in the vertical direction, thereby adjusting the second distance between the pickup head diaphragm and the bottom plane, and thus adjusting the low-frequency directivity. This utility model has the advantages of simple structure, convenient use, easy adjustment, and wide applicability.

[0039] like Figures 6 to 8 As shown, the condenser microphone of this embodiment mainly includes: a pickup head 5, a protective cover 6, and an acoustic support of this embodiment. The pickup head 5 is fixed in the pickup head fixing ring 11, and the protective cover 6 is used to cover the pickup head 5 and the acoustic support.

[0040] For this condenser microphone, the frequency response curves of the microphone unit in the forward (0°) and reverse (180°) directions were measured respectively. Comparing the frequency response curves before and after raising and moving the microphone head forward verifies that both raising and moving the microphone head position can change the acoustic performance of the microphone unit to some extent. Raising the microphone head position, i.e., increasing the distance between the microphone head and the bottom plane, has a certain boosting effect on high frequencies, and significantly enhances the directivity of mid and high frequencies. Moving the microphone head position to the left, i.e., changing the horizontal position of the microphone head, can achieve high-frequency boost optimization, as well as improved directivity of mid and high frequencies.

[0041] In summary, this utility model provides an acoustic support for adjusting the distance between the diaphragm of the pickup head and its bottom and side planes, as well as a condenser microphone incorporating the same. The technical solution of this utility model allows for flexible adjustment of the frequency response characteristics and directivity of the sound transmission device to adapt to different application scenarios and needs, and has at least the following advantages:

[0042] (1) Simplified design: Traditional digital signal processing or mechanical adjustment methods may require complex circuits or mechanical structures to achieve frequency response and directivity adjustment. However, the technical solution of this utility model utilizes changes in acoustic structure to adjust the distance of the diaphragm from the bottom plane and the side plane, thereby achieving frequency response and directivity adjustment without increasing complex circuits or mechanical structures, simplifying the design and manufacturing process.

[0043] (2) Real-time adjustment: By adjusting the distance from the diaphragm to the bottom and side planes, real-time frequency response and directivity adjustment can be achieved. Traditional digital signal processing methods may require introducing delays in the signal processing chain, while the technical solution of this utility model can achieve instant adjustment to adapt to different sound environments and application requirements.

[0044] (3) Adaptive performance: By changing the acoustic structure, the frequency response and directivity are adjusted, giving the microphone better adaptive performance. The technical solution of this utility model can be steplessly adjusted according to the acoustic characteristics of the actual environment, providing more accurate and optimized sound capture and transmission effects.

[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An acoustic support, characterized in that, include: The microphone head frame (1) includes a microphone head fixing ring (11) and a vertical support column (12) located below the microphone head fixing ring (11); A horizontal substrate (2) has an elongated hole extending in the horizontal direction in the center of the horizontal substrate (2), and a slide rail (21) is provided along the circumference of the elongated hole. A connecting ring (3) is configured to be sleeved around the vertical support column (12) so that the vertical support column (12) can slide along the vertical direction; The connector (4) is fixedly connected to the connecting ring (3). The connector (4) includes an overlap (41), which is configured to fit into the slide rail (21) and be able to slide horizontally along the slide rail (21).

2. The acoustic support according to claim 1, characterized in that, The vertical support column (12) passes through the elongated hole, the microphone head fixing ring (11) is located above the horizontal plane of the horizontal base plate (2), and the connecting ring (3) and the connector (4) are located below the horizontal plane of the horizontal base plate (2).

3. The acoustic support according to claim 1, characterized in that, The connector (4) is a U-shaped plate with the overlapping part (41) at the top and a snap-fit ​​mounting hole at the bottom for installing the connecting ring (3).

4. The acoustic support according to claim 3, characterized in that, The connecting ring (3) has a waistline groove, the shape and size of which match the shape and size of the snap-fit ​​mounting hole.

5. The acoustic support according to claim 3, characterized in that, The U-shaped plate is made by stamping a metal plate.

6. The acoustic support according to claim 1, characterized in that, The connecting ring (3) is made of elastic material.

7. The acoustic support according to claim 1, characterized in that, The connecting ring (3) has an elastic adjustment gap.

8. The acoustic support according to claim 1, characterized in that, The width of the elongated hole is greater than or equal to the width of the pickup head fixing ring (11), and the width of the elongated hole is greater than or equal to the diameter of the vertical support column (12).

9. The acoustic support according to claim 1, characterized in that, The center point of the pickup head fixing ring (11) is located on the extension line of the axis of the vertical support column (12).

10. A capacitor microphone, characterized in that, include: The microphone (5), the protective cover (6), and the acoustic bracket according to any one of claims 1 to 9, wherein the microphone (5) is fixed in the microphone fixing ring (11), and the protective cover (6) is used to cover the microphone (5) and the acoustic bracket.

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