Microphone

Abstract

The utility model discloses a microphone, which comprises a shell, the shell is provided with an installation groove, the installation groove is arranged at the middle position of the top of the shell and is used for installing a microphone core, the microphone core is a unidirectional microphone core, a vibrating diaphragm of the microphone core is arranged at the upper part, the shell is provided with a first air inlet hole communicated with the installation groove, and the first air inlet hole is communicated with the installation groove. A first air inlet hole is formed in the shell and located above the microphone core, a cavity is formed in the shell and located below the microphone core, a plurality of second air inlet holes are formed in the side wall of the shell and communicated with the cavity, and when the microphone core obtains a sound signal, the first air inlet hole and the second air inlet hole are communicated with each other. The cavity and the mounting groove are not communicated with each other, and gas respectively passes through the first gas inlet hole and the second gas inlet hole to enter the mounting groove or the cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of audio equipment, and particularly relates to a microphone. Background Art

[0002] The existing microphones generally adopt a microphone core design with a single air inlet hole. In a complex acoustic environment, especially when the sound source is strong or the frequency is high, it is difficult for a single air inlet hole to ensure a stable pressure difference is formed above and below the diaphragm of the microphone core, and the pressure below the microphone core is prone to leakage, thereby affecting the sound capture and transmission quality and easily generating whistling or other harsh sounds. Content of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a microphone, which can effectively balance the pressure distribution around the microphone core, reduce pressure leakage, prevent whistling and harsh sounds, and thus improve the sound output effect and stability of the microphone.

[0004] The microphone according to the first aspect embodiment of the utility model includes a housing, the housing is provided with an installation groove, the installation groove is located at the middle position of the top of the housing and is used for installing the microphone core, the microphone core is a unidirectional microphone core, the diaphragm of the microphone core is located in the upper part, the housing is provided with a first air inlet hole communicating with the installation groove, the first air inlet hole is located above the microphone core, a cavity is arranged inside the housing, the cavity is located below the microphone core, the side wall of the housing is provided with a plurality of second air inlet holes, and the plurality of second air inlet holes communicate with the cavity. When the microphone core acquires a sound signal, the cavity and the installation groove do not communicate with each other, and gas enters the installation groove or the cavity through the first air inlet hole and the second air inlet hole respectively.

[0005] The microphone according to the embodiment of the utility model has at least the following beneficial effects: The housing is made of high-strength plastic material, an installation groove is opened at the center of the top, and a unidirectional microphone core is installed in the groove, with the diaphragm of the microphone core facing upward. A first air inlet hole is opened above the center of the top of the housing to guide the sound signal to the microphone core. A cavity is formed from the bottom of the housing to below the microphone core, and an equal number of second air inlet holes are opened on both sides of the housing, which are evenly distributed and all communicate with the inside of the cavity. When in use, the sound signal directly acts on the diaphragm of the microphone core through the first air inlet hole. At the same time, the air pressure in the cavity is balanced with the outside through the second air inlet hole, effectively reducing the pressure leakage and whistling phenomenon. Through the synergistic effect of the first air inlet hole and the second air inlet hole, the pressure distribution around the microphone core is effectively balanced, the sound quality fluctuation caused by pressure leakage is reduced, and the stability of the sound signal is improved.

[0006] According to some embodiments of the present utility model, the housing is further provided with a plurality of third air inlets, and the plurality of third air inlets are arranged on the front and back surfaces of the housing and communicate with the cavity.

[0007] According to some embodiments of the present utility model, both the third air inlet and the second air inlet are long holes.

[0008] According to some embodiments of the present utility model, the side wall of the housing is inclined downward from the first air inlet towards both sides, and the plurality of second air inlets are evenly arranged at the inclined part to guide gas into the cavity.

[0009] According to some embodiments of the present utility model, a sound baffle is arranged in the housing, and the sound baffle and the inner side wall of the housing jointly form the cavity, and the sound baffle is located below the installation groove.

[0010] According to some embodiments of the present utility model, the installation groove is located above the middle of the sound baffle, and the sound baffle is inclined downward from the middle towards both sides.

[0011] According to some embodiments of the present utility model, the housing is provided with an installation cavity, the sound baffle separates the cavity from the installation cavity, and a power supply component and a controller are arranged in the installation cavity.

[0012] According to some embodiments of the present utility model, the sound baffle is provided with a through hole, and the electric wire of the microphone core passes through the through hole to electrically connect the controller and the power supply component.

[0013] According to some embodiments of the present utility model, a mesh cover is arranged on the surface of the housing, and the mesh cover can completely cover the first air inlet, the second air inlet and the third air inlet.

[0014] According to some embodiments of the present utility model, the housing includes a first shell and a second shell connected to each other, and the first shell and the second shell are fixedly connected by fasteners.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0017] Figure 1 is a cross-sectional schematic view of a microphone according to an embodiment of the present utility model;

[0018] Figure 2Schematic diagram of the decomposed state of the microphone core of the embodiment of the present utility model;

[0019] Figure 3 Schematic diagram of the microphone of the embodiment of the present utility model.

[0020] Reference numerals: housing 100; cavity 101; installation cavity 102; first air inlet hole 110; second air inlet hole 120; third air inlet hole 130; installation groove 140; microphone core 200; partition plate 300; controller 400; power supply assembly 500; mesh cover 600. Detailed implementation manners

[0021] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0023] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the recited number, and "above", "below", "within", etc. are understood as including the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0024] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. shall be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution. In the description of the present utility model, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0025] Referring to Figure 1 , Figure 2 and Figure 3 , the present utility model provides a microphone, which includes a housing 100. The housing 100 is provided with a mounting groove 140 located at the middle position of the top of the housing 100 for mounting a microphone element 200. The microphone element 200 is a unidirectional microphone element 200, and the diaphragm of the microphone element 200 is located at the upper part. The housing 100 is provided with a first air inlet hole 110 communicating with the mounting groove 140, and the first air inlet hole 110 is located above the microphone element 200. A cavity 101 is provided inside the housing 100, and the cavity 101 is located below the microphone element 200. A plurality of second air inlet holes 120 are provided on the side wall of the housing 100, and the plurality of second air inlet holes 120 communicate with the cavity 101. When the microphone element 200 obtains a sound signal, the cavity 101 and the mounting groove 140 are not in communication with each other, and gas passes through the first air inlet hole 110 and the second air inlet holes 120 respectively to enter the mounting groove 140 or the cavity 101.

[0026] Specifically, the housing 100 serves as the main bearing component of the microphone. An installation groove 140 is provided at the middle position of the top of the housing 100 for precisely installing the microphone element 200. The first air inlet hole 110 is provided at the top of the housing 100 and is directly connected to the installation groove 140, located above the microphone element 200, for guiding the sound signal to directly act on the diaphragm of the microphone element 200, ensuring the directness and efficiency of sound transmission. The microphone element 200 is a unidirectional microphone element 200, and its diaphragm is located in the upper part, that is, the position closest to the first air inlet hole 110, to maximize the efficiency of air flow into the microphone element 200, reduce losses, and thus improve the integrity of sound signal acquisition. A cavity 101 is provided inside the housing 100, and the cavity 101 is located below the microphone element 200. Through physical isolation, the leakage of pressure below the microphone element 200 is reduced, and at the same time, the structural stability of the microphone is enhanced. And a plurality of second air inlet holes 120 are evenly distributed on the side wall of the housing 100 and are connected to the cavity 101, which not only maximizes the sound pickup efficiency, but also helps to balance the air pressure at the upper and lower positions of the microphone element 200, and can also reduce the noise interference caused by the direct impact of external air flow on the microphone element 200 to a certain extent.

[0027] In a specific embodiment, the housing 100 is made of a high-strength plastic material. An installation groove 140 is opened at the center of the top, and a unidirectional microphone element 200 is installed in the groove with the diaphragm of the microphone element 200 facing upward. A first air inlet hole 110 is opened above the center of the top of the housing 100 for guiding the sound signal to the microphone element 200. A cavity 101 is formed from the bottom of the housing 100 to below the microphone element 200. Equal numbers of second air inlet holes 120 are opened on both sides of the housing 100, evenly distributed, and are all connected to the inside of the cavity 101. During use, the sound signal directly acts on the diaphragm of the microphone element 200 through the first air inlet hole 110. At the same time, the air pressure in the cavity 101 is balanced with the outside through the second air inlet holes 120, effectively reducing the pressure leakage and howling phenomenon. Through the synergistic effect of the first air inlet hole 110 and the second air inlet holes 120, the pressure distribution around the microphone element 200 is effectively balanced, the sound quality fluctuation caused by pressure leakage is reduced, and the stability of the sound signal is improved.

[0028] Refer to Figure 1 and Figure 2, Further, in some embodiments, in addition to the previously mentioned first air inlet hole 110 and second air inlet hole 120, the housing 100 is further provided with a plurality of third air inlet holes 130. These third air inlet holes 130 are cleverly arranged on the front and back sides of the housing 100, that is, the front and rear sides, and each third air inlet hole 130 is directly communicated with the cavity 101, further enhancing the balance ability of the internal air pressure of the microphone, and enabling stable sound quality output even in complex and changeable environments. Optionally, both the third air inlet hole 130 and the second air inlet hole 120 are designed as long holes. The design of the long holes not only increases the air intake area and improves the air intake efficiency, but also helps to reduce the noise generated by the too-fast air flow, making the microphone capture sound more purely and naturally. By adding the third air inlet holes 130 and optimizing the shape and position layout of the second air inlet holes 120, it helps to reduce the sound quality fluctuation phenomenon caused by air pressure fluctuation and improves the stability of the sound quality.

[0029] Refer to Figure 1 and Figure 2 , Specifically, the side wall of the housing 100 starts from the first air inlet hole 110 and is inclined downward to both sides. This design enables a plurality of second air inlet holes 120 to be evenly distributed on the inclined side wall, and utilizes the principles of gravity and natural air flow to effectively guide the gas into the cavity 101, further improving the airtightness and stability of the microphone.

[0030] It should be noted that a sound baffle is added inside the housing 100, and the baffle and the inner side wall of the housing 100 together enclose the cavity 101. The sound baffle is located below the installation groove 140, effectively isolating the space below the microphone element 200, reducing the reflection and interference of sound waves inside the microphone, and improving the clarity of the sound. Further, the sound baffle is inclined downward from the middle to both sides. This enables the sound baffle to better guide the sound waves and air flow downward, reducing the reflection and standing wave phenomenon of the sound waves on the baffle, and further improving the sound quality performance of the microphone. The setting of the sound baffle effectively isolates the space below the microphone element 200, reducing the reflection and interference of sound waves inside the microphone. At the same time, in cooperation with the second air inlet holes 120 and the third air inlet holes 130, the microphone captures sound more purely and naturally, thereby reducing the occurrence probability of the howling phenomenon.

[0031] Refer to Figure 1, Further, an installation cavity 102 is also provided inside the housing 100, and the installation cavity 102 is isolated from the cavity 101 by a sound baffle. Inside the installation cavity 102, electronic components such as a power supply assembly 500 and a controller 400 are provided, which not only ensures the safe operation of the electronic components but also avoids their interference with sound signals. Optionally, through holes are provided in the sound baffle. These through holes allow the electrical wires of the microphone element 200 to pass through to achieve electrical connection between the microphone element 200, the controller 400, and the power supply assembly 500. This not only meets the requirements of electrical connection but also ensures the integrity and sound insulation effect of the sound baffle.

[0032] Referring to Figure 3 , a mesh cover 600 is also provided on the surface of the housing 100. This mesh cover 600 can completely cover the first air inlet hole 110, the second air inlet hole 120, and the third air inlet hole 130, playing a role in dust prevention, dirt prevention, and protecting the internal structure. At the same time, the breathability of the mesh cover 600 also ensures the smooth transmission of sound signals. The setting of the mesh cover 600 plays a role in dust prevention, dirt prevention, and protecting the internal structure. It effectively blocks the erosion of external impurities and moisture on the internal components of the microphone and extends the service life of the microphone.

[0033] In some embodiments, the housing 100 is composed of a first shell and a second shell that are connected to each other. These two parts of the housing 100 are firmly fixed together by fasteners (such as screws, buckles, etc.). This assembly structure not only facilitates the manufacture and maintenance of the microphone but also ensures its structural stability and durability. The housing 100 adopts a split design and is fixed by fasteners, such a structure not only facilitates manufacture and maintenance but also ensures the overall stability of the microphone.

[0034] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A microphone, characterized in that, Comprising: A housing is provided with a mounting groove located at the middle position of the top of the housing for mounting a microphone element. The microphone element is a unidirectional microphone element, and the diaphragm of the microphone element is located at the upper part. The housing is provided with a first air inlet hole communicating with the mounting groove, and the first air inlet hole is located above the microphone element. A cavity is provided inside the housing, and the cavity is located below the microphone element. A plurality of second air inlet holes are provided on the side wall of the housing, and the plurality of second air inlet holes communicate with the cavity. When the microphone element acquires a sound signal, the cavity and the mounting groove do not communicate with each other, and gas enters the mounting groove or the cavity through the first air inlet hole and the second air inlet hole respectively.

2. The microphone according to claim 1, wherein The housing is further provided with a plurality of third air inlet holes, and the plurality of third air inlet holes are provided on the front and back sides of the housing and both communicate with the cavity.

3. The microphone according to claim 2, wherein, Both the third air inlet hole and the second air inlet hole are elongated holes.

4. The microphone according to claim 1, characterized in that, The side wall of the housing is inclined downward from the first air inlet hole towards both sides, and the plurality of second air inlet holes are evenly arranged at the inclined part to guide gas into the cavity.

5. The microphone according to claim 1, characterized in that, A sound baffle is provided inside the housing, and the sound baffle and the inner side wall of the housing together form the cavity. The sound baffle is located below the mounting groove.

6. The microphone according to claim 5, wherein, The mounting groove is located above the middle part of the sound baffle, and the sound baffle is inclined downward from the middle part towards both sides.

7. The microphone according to claim 6, characterized in that, The housing is provided with a mounting cavity, the sound baffle separates the cavity from the mounting cavity, and a power supply component and a controller are provided in the mounting cavity.

8. The microphone according to claim 7, wherein The sound baffle is provided with a through hole, and the electric wire of the microphone element passes through the through hole to be electrically connected to the controller and the power supply component.

9. The microphone according to claim 2, characterized in that, A mesh cover is provided on the surface of the housing, and the mesh cover can completely cover the first air inlet hole, the second air inlet hole and the third air inlet hole.

10. The microphone according to claim 1, characterized in that, The housing includes a first shell and a second shell that are connected to each other, and the first shell and the second shell are fixedly connected by fasteners.

Images