Microphone module and wearable device including the microphone module

Abstract

This invention provides a microphone module, comprising: a housing; a microphone unit disposed within the housing and located at the bottom of the housing; a top sound hole area located at the top of the housing; a first windproof mesh covering the top sound hole area; a windproof cotton unit disposed between the top sound hole area and the microphone unit; and a second windproof mesh disposed between the windproof cotton unit and the microphone unit. This invention also provides a wearable device, including the microphone module described above. This invention provides a microphone module with excellent windproof and noise-canceling capabilities, which can ensure clear call quality even in winds up to 9 m / s or even 11 m / s. Furthermore, this microphone module is small in size and modular, and can be embedded in wearable devices of any form.

Description

Technical Field

[0001] The present invention relates to a microphone module and a wearable device including the microphone module. Background Technology

[0002] Currently, wearable devices are increasingly appearing in people's lives, including smart helmets, smart glasses, TWS earphones, OWS earphones, sports headphones, over-ear headphones, hearing aids, smartwatches, and more. As people's needs increase, the functions of these wearable devices are also expanding. For example, many wearable devices need to incorporate voice call functionality, thus requiring the inclusion of microphones.

[0003] Additionally, users may use wearable devices outdoors or while exercising, such as in windy weather, at the beach, in the mountains, or while running or driving with the windows open. In these situations, the air currents can interfere with the microphone's pickup capabilities, making it difficult for the other party to hear the user clearly.

[0004] To address this issue, existing technologies have proposed adding wind noise reduction measures to microphones. However, even with these measures, current microphones can only generally meet call requirements in wind speeds of up to 5 m / s.

[0005] Therefore, there is a need in the art for a microphone module that can clearly pick up the user's voice during voice calls even in conditions of higher wind speeds. Summary of the Invention

[0006] In response to the problems and needs mentioned above, this disclosure proposes a novel technical solution that solves the aforementioned problems and brings about other technical effects by adopting the following technical features.

[0007] The present invention provides a microphone module, comprising: a housing; a microphone unit disposed in the housing and located at the bottom of the housing; a top sound hole area located at the top of the housing; a first windproof net covering the top sound hole area; a windproof cotton unit disposed between the top sound hole area and the microphone unit; and a second windproof net disposed between the windproof cotton unit and the microphone unit.

[0008] Preferably, the density of the windproof cotton unit is greater than 25 kg / m³. 3 .

[0009] Preferably, the windproof cotton unit has a microporous structure comprising multiple micropores, and the pore size of each micropore is 1μm to 1mm.

[0010] Preferably, the windproof cotton unit includes ceramic sponge, open-cell foam plastic, or sponge rubber.

[0011] Preferably, the surface of the windproof cotton unit opposite to the first windproof net includes a plurality of protrusions or a plurality of recesses.

[0012] Preferably, the surface of the windproof cotton unit opposite to the first windproof net includes multiple protrusions and multiple recesses, wherein the multiple protrusions and multiple recesses form a wavy texture, and the multiple protrusions constitute the peaks of the wavy texture, and the multiple recesses constitute the troughs of the wavy texture. The shapes of the peaks and troughs are one of arc, triangle, sine curve, and square.

[0013] Preferably, the top acoustic hole area has a circular shape and a diameter D of 0.15-0.55 mm.

[0014] Preferably, the top acoustic hole area has a polygonal shape and the diameter of the outer or inner circle of the polygonal shape is 0.15-0.55 mm.

[0015] Preferably, the top acoustic aperture area includes a plurality of sub-acoustic apertures, wherein: each sub-acoustic aperture has a polygonal shape and the diameter of the circumscribed circle or the diameter of the inscribed circle of the polygonal shape of each sub-acoustic aperture is less than or equal to 0.05 mm; or each sub-acoustic aperture has a circular shape and the diameter is less than or equal to 0.05 mm.

[0016] Preferably, the top acoustic aperture area is formed by machining the housing, or the microphone module includes an acoustic aperture plate connected to the top opening of the housing and including the top acoustic aperture area.

[0017] Preferably, one or both of the first and second windbreak nets have multiple mesh openings, each mesh opening having a circular shape and a diameter less than or equal to 0.05 mm, or each mesh opening having a polygonal shape and the diameter of the circumscribed circle or the inscribed circle of the polygonal shape being less than or equal to 0.05 mm.

[0018] Preferably, the shell is integrally formed of metal material, and the first windproof net and the second windproof net are made of metal material.

[0019] The present invention also provides a wearable device, including the microphone module as described above.

[0020] This invention provides a microphone module with excellent windproof and noise-canceling capabilities, ensuring clear call quality even in winds up to 9 m / s or even 11 m / s. Furthermore, this microphone module is small and modular, allowing it to be embedded in wearable devices of any form. Attached Figure Description

[0021] Figure 1 This is a schematic diagram and an enlarged view of the top sound hole area of ​​a microphone module according to a preferred embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of a windproof cotton unit according to a preferred embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this disclosure may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Where the number of components is not specified, the number of components may be one or more; similarly, the terms “a,” “the,” “described,” and similar terms do not necessarily indicate a quantity limitation. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “install,” “set,” “connect,” or “link,” and similar terms are not limited to physical or mechanical installation, setting, or connection, but may include electrical installation, setting, or connection, whether direct or indirect. The terms “top,” “bottom,” “upper,” “lower,” “left,” and “right,” etc., are used only to indicate the relative positional relationship of the equipment during use or the positional relationship shown in the accompanying drawings; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] The microphone module according to the present invention will now be described with reference to the accompanying drawings. Figure 1A preferred embodiment provides a microphone module, including: a housing 1; a microphone unit 2 disposed within the housing 1 and located at the bottom of the housing 1; and a top sound hole area 3 located at the top of the housing 1. The top sound hole area 3 may be configured as a through hole or may include multiple sub-sound holes (as described below), primarily for allowing sound to pass through and be transmitted to the microphone unit 2. The microphone unit 2 may, for example, be fixedly mounted to the bottom of the housing 1, and may be provided with necessary sealing devices, support devices, shielding devices, etc. for the microphone unit 2. Electrical leads 20 of the microphone unit 2 may be led out from the bottom for connection to circuit components of a wearable device.

[0027] In addition, to achieve better windproof and noise reduction effects, the microphone module also includes a first windproof net 41, which covers the top sound hole area 3; a windproof cotton unit 5, which is disposed between the top sound hole area 3 and the microphone unit 2; and a second windproof net 42, which is disposed between the windproof cotton unit 5 and the microphone unit 2. It should be understood that the first windproof net 41, the windproof cotton unit 5, and the second windproof net 42 can be sequentially installed from the bottom of the housing 1, followed by the insertion of the microphone unit 2. The housing 1 may also include a cover plate 9 for sealing its bottom, which can be installed into the opening of the housing 1 after all components of the microphone module have been assembled into the housing 1.

[0028] The microphone module of this invention incorporates windproof and noise-reducing measures. For example, during voice calls in windy weather, sound can pass through the first windproof net 41, the top sound hole area 3, the windproof cotton unit 5, and the second windproof net 42 to reach the microphone unit 2 normally. Simultaneously, the wind blowing towards the microphone module is first dispersed by the first windproof net 41, and its speed is reduced; further wind encountering the windproof cotton unit 5 will be further obstructed. Furthermore, even if some wind still manages to pass through the windproof cotton, it will be dispersed and slowed down again by the second windproof net 42. In this process, sound can reach the microphone unit 2 with virtually no loss, while wind noise is almost completely attenuated. Tests have shown that the microphone module according to this invention can maintain clear communication even in winds of 9 m / s or even 11 m / s.

[0029] More preferably, to further ensure the superior windproof and noise-reducing effect of the present invention, the density of the windproof cotton unit 5 can be greater than 25 kg / m³. 3 Furthermore, the density of the windproof cotton unit 5 can be kept as low as possible to avoid excessively increasing the weight of the microphone module.

[0030] Furthermore, the windproof cotton unit 5 preferably has a microporous structure comprising multiple micropores. The smaller the micropores, the better the windproof effect. At the same time, considering the need to ensure clear voice communication, the pore size of each micropore is preferably set to 1μm to 1mm.

[0031] More preferably, the windproof cotton unit 5 may include ceramic sponge, open-cell foam plastic, or sponge rubber.

[0032] The surface 50 of the windproof cotton unit 5 opposite to the first windproof net 41 may preferably include a plurality of protrusions 61 and / or a plurality of recesses 62.

[0033] For example, see Figure 2 In the cross-sectional view, the surface 50 of the windproof cotton unit 5 opposite to the first windproof net 41 can have multiple protrusions 61 and multiple recesses 62, and the multiple protrusions 61 and multiple recesses 62 form a wavy texture. At this time, the multiple protrusions 61 form the crests of the wavy texture, and the multiple recesses 62 form the troughs of the wavy texture, and the shape of the crests and troughs is one of the following: arc, triangle, sine curve, and square.

[0034] although Figure 2 An embodiment showing continuously formed corrugated protrusions and recesses is illustrated. It should be understood that the protrusions and recesses can be implemented individually. For example, multiple protrusions 61, such as spherical protrusions, cylindrical protrusions, pyramidal protrusions, etc., may be provided on the surface of the windproof cotton unit 5 opposite to the first windproof net 41 (e.g., a flat surface); or multiple recesses 62, such as spherical recesses, cylindrical recesses, pyramidal recesses, etc., may be provided on the surface of the windproof cotton unit 5 opposite to the first windproof net 41 (e.g., a flat surface).

[0035] By setting this protrusion 61 / recess 62, the wind entering from the top sound control area 3 will change direction at the protrusion 61, for example... Figure 2 As indicated by the arrow, the wind may reflect multiple times between the protrusions and recesses, and some air may even reflect back towards the top sound control area 3, thus creating a space of air turbulence between the top sound control area 3 and the windproof cotton unit 5, further increasing the blocking and attenuation effect on the wind.

[0036] More preferably, the windproof cotton unit 5 includes a plurality of windproof cotton sub-units stacked in a direction from the top of the housing toward the bottom.

[0037] See back Figure 1 As shown in the enlarged view, the top acoustic hole area 3 can be circular in shape with a diameter D of 0.15-0.55 mm. According to a preferred embodiment not shown, the top acoustic hole area 3 can also be polygonal in shape with a circumscribed circle diameter or inscribed circle diameter of 0.15-0.55 mm.

[0038] More preferably, the top acoustic aperture region 3 may further include multiple sub-acoustic apertures 30, such as... Figure 1As shown in the enlarged view, each sub-sound hole 30 can have a hexagonal shape as shown, and the diameter of the circumscribed circle or the inscribed circle of the hexagon can be less than or equal to 0.05 mm. With this arrangement, the airflow can be further dispersed and resistance increased at the top sound hole area 3, while ensuring that sufficient sound passes through the top sound control area 3.

[0039] According to a preferred variation, each sub-sound hole can have a polygonal shape. For example, in addition to the hexagonal sub-sound hole mentioned above, it can also be a triangular, square, pentagonal, or other shaped sub-sound hole. The circumcircle diameter or incircle diameter of the polygonal shape of each sub-sound hole is also less than or equal to 0.05 mm.

[0040] According to another preferred variation, each sub-sound hole 30 may have a circular shape and a diameter of less than or equal to 0.05 mm.

[0041] More preferably, the top acoustic hole region 3 is formed by machining the top wall 10 of the housing 1. In this case, the top wall 10 and the side wall 11 of the housing 1 can be formed integrally, and the top acoustic hole region 3, whether it includes a through hole or multiple sub-acoustic holes, is also formed together during the forming process of the housing 1. The latter top acoustic hole region 3 can be machined by drilling or other methods after the housing 1 is formed.

[0042] According to another preferred embodiment (not shown), the microphone module may include an additional perforation plate that includes the top perforation area and can be connected to the top opening of the housing 1 (e.g., by welding or bonding). Configuring an additional perforation plate facilitates the assembly of the microphone module and its replacement in case of damage.

[0043] More preferably, one or both of the first windbreak net 41 and the second windbreak net 42 may have multiple mesh openings. Figure 1 (not shown in the cross-sectional view), each mesh has a circular shape and a diameter less than or equal to 0.05 mm, or each mesh has a polygonal shape (e.g., a hexagonal shape) and the circumcircle diameter or incircle diameter of the polygonal shape is less than or equal to 0.05 mm.

[0044] On the other hand, since the microphone module also requires shielding against electromagnetic interference, the housing 1 can be integrally formed from metal, and the first windproof mesh 41 and the second windproof mesh 42 are also made of metal. Furthermore, the first windproof mesh 41 and the second windproof mesh 42 can be welded or bonded to the housing 1.

[0045] In summary, this invention provides a microphone module with excellent windproof and noise-canceling capabilities, ensuring clear call quality even in winds as high as 9 m / s or even 11 m / s. Furthermore, this microphone module is small and modular, allowing it to be embedded in wearable devices of any form.

[0046] The exemplary embodiments of this disclosure have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A microphone module, comprising: Shell (1); A microphone unit (2) is disposed in the housing (1) and located at the bottom of the housing (1); Top acoustic hole area (3) is located at the top of the housing (1); The first windproof net (41) covers the top sound hole area (3); A windproof cotton unit (5) is disposed between the top sound hole area (3) and the microphone unit (2); and The second windproof net (42) is set between the windproof cotton unit (5) and the microphone unit (2).

2. The microphone module as described in claim 1, wherein, The density of the windproof cotton unit (5) is greater than 25 kg / m³. 3 .

3. The microphone module as described in claim 1, wherein, The windproof cotton unit (5) has a microporous structure including multiple micropores, and the pore size of each micropore is 1μm to 1mm.

4. The microphone module as described in claim 1 or 2, wherein, The windproof cotton unit (5) includes ceramic sponge, open-cell foam plastic or sponge rubber.

5. The microphone module as described in claim 1 or 2, wherein, The surface (50) of the windproof cotton unit (5) opposite to the first windproof net (41) includes a plurality of protrusions (61) or a plurality of recesses (62).

6. The microphone module as described in claim 1 or 2, wherein, The surface (50) of the windproof cotton unit (5) opposite to the first windproof net (41) includes a plurality of protrusions (61) and a plurality of recesses (62), wherein the plurality of protrusions (61) and the plurality of recesses (62) form a wavy texture, and the plurality of protrusions (61) constitute the crests of the wavy texture, and the plurality of recesses (62) constitute the troughs of the wavy texture. The shape of the crests and troughs is one of arc, triangle, sine curve, or square.

7. The microphone module as claimed in claim 1, wherein, The top acoustic hole area (3) has a circular shape and a diameter D of 0.15-0.55 mm.

8. The microphone module as claimed in claim 1, wherein, The top acoustic hole area (3) has a polygonal shape and the diameter of the outer or inner circle of the polygonal shape is 0.15-0.55 mm.

9. The microphone module as claimed in claim 7 or 8, wherein, The top acoustic hole area (3) is formed by machining the top wall (10) of the housing (1), or; The microphone module includes a sound hole plate that is connected to the top opening of the housing (1) and includes the top sound hole area.

10. The microphone module as claimed in claim 7, wherein, The top acoustic aperture region (3) includes a plurality of sub-acoustic apertures (30), wherein: Each sub-sound hole (30) has a polygonal shape, and the circumcircle diameter or incircle diameter of the polygonal shape of each sub-sound hole (30) is less than or equal to 0.05 mm; or Each sub-sound hole (30) has a circular shape and a diameter of less than or equal to 0.05 mm.

11. The microphone module as claimed in claim 1, wherein, One or both of the first windbreak net (41) and the second windbreak net (42) have multiple mesh openings, each mesh opening having a circular shape and a diameter less than or equal to 0.05 mm, or each mesh opening having a polygonal shape and a circumscribed circle diameter or inscribed circle diameter less than or equal to 0.05 mm.

12. The microphone module as claimed in claim 1, wherein, The shell (1) is integrally formed of metal material, and the first windproof net (41) and the second windproof net (42) are made of metal material.

13. A wearable device comprising a microphone module as claimed in any one of claims 1-12.

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