A microphone holder and microphone

Abstract

This utility model relates to the field of microphone technology, specifically to a microphone holder and microphone, including a support part and a mounting part arranged vertically. Several main ribs and several secondary ribs are installed between the support part and the mounting part, and several branches are arranged in a tree-like pattern around the main ribs. The microphone holder of this utility model adopts a main-secondary dual-gradient rib array design between the support part and the mounting part: main ribs and secondary ribs are evenly and alternately arranged circumferentially, achieving dual optimization of lightweighting (35% weight reduction) and vibration suppression through differentiated stiffness distribution. This results in a discrete distribution of the structure's natural frequencies at 120Hz / 280Hz / 450Hz, effectively avoiding the 80-500Hz environmental noise band, achieving the best balance between stiffness, weight, and vibration resistance. Furthermore, the branches fork from the main ribs at a 45-degree angle, with the ends fixedly connected to the secondary ribs, forming a lightweight reinforced structure. This allows the microphone holder to improve its stiffness through a biomimetic fractal layout while maintaining high sound wave transmittance, all while only slightly increasing its weight.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, specifically to a microphone holder and a microphone. Background Technology

[0002] In the structural design of a microphone (microphone head), the bracket is a key supporting component, and its mechanical properties directly affect the sound pickup quality and the reliability of the equipment. Traditional microphone brackets usually adopt a homogeneous rib or solid structure design, which can ensure the rigidity of the foundation, but has the following technical pain points: First, the existing structure lacks differentiated control of high-frequency and low-frequency vibrations, has limited lateral bending resistance, and is prone to micro-deformation under complex working conditions, reducing sound wave transmittance;

[0003] Secondly, insufficient vibration suppression and the concentration of natural frequencies of homogeneous ribs make them prone to coupling with environmental noise (such as the common mechanical vibration frequency band of 80-500Hz), causing acoustic interference and resulting in sound pickup distortion. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a microphone holder and microphone, which can achieve synergistic optimization of stiffness, weight and vibration suppression while ensuring high sound wave transmittance, so as to solve the technical problems described in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] A microphone holder includes a support part and a mounting part arranged vertically, wherein a plurality of main ribs and a plurality of secondary ribs are evenly arranged at circumferential intervals between the support part and the mounting part.

[0007] Each of the secondary ribs is located between two adjacent main ribs, and the main ribs have several branches arranged in a tree-like pattern, with the other end of each branch fixedly connected to the secondary rib.

[0008] Furthermore, the diameter of the main rib is larger than the diameter of the secondary rib, and the diameter of the main rib near the support portion is larger than the diameter of the main rib near the mounting portion.

[0009] Furthermore, the main rib and the secondary rib are respectively provided with grooves, the grooves having a diameter of 0.3 mm and a depth of 0.1 mm.

[0010] Furthermore, the outer surface of the main rib protrudes outward to form a protrusion, and the cross-section of the main rib is teardrop-shaped.

[0011] Furthermore, the support portion is generally annular, and the inner wall of the support portion has a boss, with a rubber ring fastened above the boss.

[0012] Furthermore, the top of the support is a connector for installing the microphone, and the connector has a slot.

[0013] Furthermore, the mounting part is generally ring-shaped, and the bottom end face of the mounting part is provided with a positioning post and a connecting hole, and the positioning post is integrally formed with the mounting part.

[0014] Furthermore, the main rib, the secondary rib, and the branch are made of polyoxymethylene or nylon.

[0015] A microphone, including the microphone holder as described above.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The microphone bracket of this utility model adopts a main-auxiliary dual-gradient rib array design between the support part and the mounting part: the main ribs and the auxiliary ribs are evenly and alternately arranged along the circumference, and the differentiated stiffness distribution achieves dual optimization of lightweight (weight reduction of 35%) and vibration suppression. The main ribs ensure the fundamental frequency modal stiffness, and the auxiliary ribs act as damping units to adjust the dynamic response, so that the natural frequency of the structure is discretely distributed at 120Hz / 280Hz / 450Hz, effectively avoiding the 80-500Hz environmental noise frequency band, and achieving the best balance between stiffness, weight and vibration resistance.

[0018] 2. The main rib has several branches arranged in a tree-like pattern. The branches branch off from the main rib at a 45-degree angle and are fixedly connected to the secondary rib at their ends, forming a lightweight and reinforced structure. This improves the lateral bending resistance and allows the microphone bracket to increase its rigidity through a biomimetic fractal layout while maintaining high sound wave transmittance, all while increasing the weight slightly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the microphone holder of this utility model.

[0020] Figure 2 This is a schematic diagram of the cross-sectional shape of the main rib of the microphone holder of this utility model.

[0021] Figure 3 This is a schematic diagram of the support part of the microphone holder of this utility model.

[0022] Figure 4 This is a schematic diagram of the mounting part of the microphone holder of this utility model.

[0023] In the diagram: 1-Support part, 11-Boss, 12-Rubber ring, 13-Connector, 14-Slot, 2-Mounting part, 21-Positioning post, 22-Connecting hole, 3-Main rib, 4-Secondary rib, 5-Branch, 6-Groove, 7-Protrusion. Detailed Implementation

[0024] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0025] In the description of this application, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Please see Figure 1 , Figure 3 and Figure 4 This utility model provides a technical solution: a microphone bracket, comprising a support part 1 and a mounting part 2 arranged vertically. The support part 1 adopts a ring-shaped integrated structure. The top of the support part 1 is a connector 13 with a slot 14, which cooperates with the mating groove and locking block at the bottom of the microphone to achieve bidirectional limiting (radial anti-detachment + circumferential anti-rotation). In addition, the outer circumferential surface of the support part 1 has a lug for fixing the microphone with screws to achieve high stability installation of the microphone.

[0027] Please see Figure 1 and Figure 3 The inner wall of the support part 1 has a boss 11, and a rubber ring 12 is fitted on the boss 11 to buffer axial impact (the peak acceleration is reduced by 60% when dropped 1m in actual tests) to achieve active shock absorption protection for the microphone.

[0028] Please see Figure 1 and Figure 4 The mounting part 2 adopts a ring-shaped integrated structure, which together with the support part 1 forms a precision assembly cavity for the microphone (coaxiality ≤0.1mm). The bottom end face of the mounting part 2 is provided with a positioning post 21 and a connecting hole 22. The positioning post 21 is integrally formed with the mounting part 2. The positioning post 21 is used to assist in positioning when the mounting part 2 is installed on the bracket inside the microphone. The connecting hole 22 is used for screw connection between the mounting part 2 and the bracket inside the microphone, so as to achieve precise positioning and stable installation of the microphone assembly within a limited space.

[0029] Please see Figure 1Between the support part 1 and the mounting part 2, a number of main ribs 3 and a number of secondary ribs 4 are evenly arranged along their circumference. Each secondary rib 4 is located between two adjacent main ribs 3 (staggered arrangement). The diameter of the main rib 3 is larger than the diameter of the secondary rib 4 (differentiated diameter design). Under the same stiffness, the weight is reduced by 35% compared to using all main ribs 3 (compared to the all-main-ribs 3 scheme).

[0030] In addition, the gradient change in stiffness of the main / auxiliary ribs discretizes the structure's natural frequency, preventing resonance with the 80–500Hz environmental noise band (such as mechanical vibration and human voice interference). The secondary rib 4, as a dynamic damping unit, can suppress high-frequency resonance (reducing the resonance peak value by ≥12dB).

[0031] Please see Figure 1 The main rib 3 has several branches 5 arranged in a tree-like pattern. The branches 5 branch off from the main rib 3 at a 45-degree angle and are fixedly connected to the secondary rib 4 at their ends, forming a lightweight and reinforced structure that improves lateral bending resistance. The main rib 3, the secondary rib 4, and the branches 5 are all made of polyoxymethylene or nylon 66, making them suitable for applications that balance impact resistance and stiffness.

[0032] The branch 5 is approximately one-third the length of the main rib and has a diameter of 0.2 mm. This tree-like fractal structure allows the microphone support to increase its rigidity through a biomimetic fractal layout while maintaining high sound wave transmittance, all while only slightly increasing its weight. In addition, the end of the branch 5 adopts a 15° upward curve design (imitating the shape of plant leaf tips), which can reduce airflow vortex noise (measured turbulent sound pressure level reduction of 3 dB).

[0033] Please see Figure 1 and Figure 2 The outer surface of the main rib 3 protrudes outward to form a protrusion 7, and the cross-section of the main rib 3 is teardrop-shaped. The outer surface of the main rib 3 adopts a teardrop-shaped cross-sectional profile, which suppresses the turbulence around the sound wave through streamlined geometry, reducing the insertion loss of the high-frequency band (3kHz) sound wave by 0.4dB (compared to the traditional circular cross-section). At the same time, this cross-sectional shape, through optimized material distribution, can improve the bending strength under the same weight.

[0034] The diameter of the main rib 3 near the support part 1 is larger than the diameter of the main rib 3 near the mounting part 2 (gradual diameter structure). The root near the support part 1 (upper part) is thickened to 0.5mm (to improve bending stiffness), and linearly thins to 0.2mm towards the mounting part 2 (lower part) (weight reduction at the end). (When the mounting part 2 is at the bottom, the upper part of the main rib 3 bears greater tensile stress. Thickening the root meets the stress requirements. High-frequency sound waves mainly radiate upwards, and the thinner diameter structure at the bottom reduces sound wave reflection).

[0035] Furthermore, this design, through optimization with equal-strength beams, achieves an overall weight reduction of 22% (compared to the equal-diameter scheme) while ensuring critical load capacity (≥8N static pressure). Thickening at the root suppresses stress concentration, while the narrow-diameter structure at the end adapts to the lightweight requirements of acoustic components.

[0036] Please see Figure 1 The main rib 3 and the secondary rib 4 each have grooves 6 formed on their surfaces. The grooves 6 have a diameter of 0.3 mm and a depth of 0.1 mm, and their spacing is arranged according to a 1 / 4 wavelength gradient of the target noise frequency band (500-800Hz) (e.g., 8.6 mm spacing for 500Hz). This design selectively absorbs humming frequency noise through the Helmholtz resonance principle (measured noise reduction ≥6dB), while only reducing the weight of the ribs, having minimal impact on overall stiffness.

[0037] This utility model also relates to a microphone, including the microphone holder of the above embodiment.

[0038] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A microphone holder, characterized in that: It includes a support part (1) and an installation part (2) arranged vertically. Between the support part (1) and the installation part (2), a number of main ribs (3) and a number of secondary ribs (4) are evenly arranged at circumferential intervals. Each of the secondary ribs (4) is located between two adjacent main ribs (3), and the main ribs (3) are arranged in a tree-like manner with several branches (5), the other end of which is fixedly connected to the secondary ribs (4).

2. The microphone holder according to claim 1, characterized in that: The diameter of the main rib (3) is greater than the diameter of the secondary rib (4), and the diameter of the main rib (3) near the support part (1) is greater than the diameter of the main rib (3) near the mounting part (2).

3. The microphone holder according to claim 1, characterized in that: The main rib (3) and the secondary rib (4) are respectively provided with grooves (6), the grooves (6) having a diameter of 0.3 mm and a depth of 0.1 mm.

4. The microphone holder according to claim 1, characterized in that: The outer surface of the main rib (3) protrudes outward to form a protrusion (7), and the cross-section of the main rib (3) is teardrop-shaped.

5. The microphone holder according to claim 1, characterized in that: The support part (1) is generally ring-shaped, and the inner wall of the support part (1) has a boss (11), and a rubber ring (12) is fitted on the top of the boss (11).

6. The microphone holder according to claim 2, characterized in that: The top of the support (1) is a connector (13) for installing the microphone, and the connector (13) has a slot (14).

7. The microphone holder according to claim 1, characterized in that: The mounting part (2) is generally ring-shaped, and the bottom end face of the mounting part (2) is provided with a positioning post (21) and a connecting hole (22). The positioning post (21) is integrally formed with the mounting part (2).

8. The microphone holder according to claim 1, characterized in that: The main rib (3), the secondary rib (4), and the branch (5) are made of polyoxymethylene or nylon.

9. A microphone, characterized in that: Includes the microphone holder as described in any one of claims 1 to 8.

Images