MEMS microphone assembly and audio system

Abstract

This utility model discloses a MEMS microphone assembly and audio system, including a middle ring, a MEMS assembly, and a cap. The middle ring has a cavity extending through both ends, and a first connecting portion with a positioning structure is provided at the first end of the middle ring. The MEMS assembly includes a connected flexible circuit board module and a reinforcing plate. The reinforcing plate is connected to the positioning structure and has a first sound receiving hole. Electrical connecting portions are provided at both ends of the flexible circuit board module and pass through the cavity of the middle ring. The cap has an opening and a cover plate at both ends, respectively. The cover plate has a second sound receiving hole adapted to the first sound receiving hole. The opening of the cap connects to the first connecting portion, and the cover plate abuts against the reinforcing plate. This utility model enables miniaturization and improves the compactness of the internal structure.

Description

Technical Field

[0001] This utility model relates to the field of audio technology, and in particular to a MEMS microphone assembly and audio system. Background Technology

[0002] Existing MEMS (Micro-Electro-Mechanical Systems) microphones are too large, and the sealing of the assembled structures is poor. The internal structure of MEMS microphones is not compact enough, and they are prone to defects such as loosening of the structure and poor circuit contact after impact. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a MEMS microphone assembly and audio system that can achieve miniaturization and improve the compactness of the internal structure.

[0004] On one hand, this utility model embodiment provides a MEMS microphone assembly, including:

[0005] The intermediate ring has a cavity extending through both ends. The first end of the intermediate ring has a first connecting part, and the first connecting part has a positioning structure.

[0006] MEMS component, including a connected flexible circuit board module and a reinforcing plate, wherein the reinforcing plate is connected to the positioning structure and is provided with a first sound receiving hole, and both ends of the flexible circuit board module are provided with electrical connection parts and pass through the cavity of the intermediate ring.

[0007] The cap has an opening and a cover plate at each end. The cover plate has a second sound receiving hole adapted to the first sound receiving hole. The opening of the cap is connected to the first connecting part, and the cover plate abuts against the reinforcing plate.

[0008] According to some embodiments of the present invention, the positioning structure includes a first positioning part and a second positioning part, and the first positioning part and the second positioning part constitute a foolproof structure.

[0009] According to some embodiments of the present invention, the first positioning part and the second positioning part are two flanges of different sizes or shapes provided on the first connecting part, and the reinforcing plate is provided with a recess adapted to the two flanges.

[0010] According to some embodiments of the present invention, a dustproof net is provided between the cover plate and the reinforcing plate, covering the first sound receiving hole and the second sound receiving hole.

[0011] According to some embodiments of the present invention, the first connecting part is a sleeve part or a threaded connecting part.

[0012] According to some embodiments of the present invention, the second end of the intermediate ring is provided with a second connecting part, and the second connecting part is connected to a hollow sleeve.

[0013] According to some embodiments of the present invention, the sleeve is connected to an insulating sleeve, the insulating sleeve is fitted with a wire, the wire passes through the sleeve and is electrically connected to the electrical connection part of the flexible circuit board module.

[0014] According to some embodiments of the present invention, the second connecting part is a sleeve part or a threaded connecting part.

[0015] According to some embodiments of the present invention, the flexible circuit board module includes a substrate and wing plates located on both sides of the substrate. The substrate and the wing plates are an integral structure and the wing plates are bent relative to the substrate. The substrate is provided with electronic components and the wing plates are provided with electrical connection portions.

[0016] On the other hand, this utility model embodiment provides an audio system including the above-described MEMS microphone assembly.

[0017] The embodiments of this utility model have at least the following beneficial effects:

[0018] MEMS components include flexible circuit board modules and reinforcing plates. The flexible circuit board modules have high integration, enabling miniaturized and compact designs. The reinforcing plates are connected to the positioning structure of the intermediate ring, which allows for positioning and limiting. The opening of the cap is connected to the first connecting part, and the cover plate of the cap abuts against the reinforcing plate, which can fix the MEMS components and improve the assembly reliability of the MEMS components. The miniaturized MEMS components are fixed by the cooperation of the intermediate ring and the cap. The structure is simple, enables miniaturized design, and improves the compactness of the internal structure.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is an exploded view of the MEMS microphone assembly according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The diagram shows the middle ring of the MEMS microphone assembly and the exploded structure of the MEMS assembly.

[0023] Figure 3 This is a schematic diagram of the structure of the MEMS microphone assembly according to an embodiment of the present invention;

[0024] Figure 4 for Figure 3 The diagram shows an exploded view of the MEMS microphone assembly.

[0025] Figure label:

[0026] Intermediate ring 100, cavity 101, first connecting part 110, positioning structure 111, first positioning part 112, second positioning part 113, second connecting part 120, MEMS component 200, flexible circuit board module 210, substrate 211, wing plate 212, reinforcing plate 220, first sound receiving hole 221, recess 222, cap 300, cover plate 310, second sound receiving hole 311, dustproof net 400, sleeve 500, insulating sleeve 600, wire 700. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0030] This embodiment discloses an audio system, including a MEMS microphone component. Please refer to... Figure 1 and Figure 2The MEMS microphone assembly includes an intermediate ring 100, a MEMS component 200, and a cap 300. The intermediate ring 100 is a ring-shaped structure that serves as a support and connection. The intermediate ring 100 is provided with a cavity 101 that extends through both ends. The first end of the intermediate ring 100 is provided with a first connecting part 110, and the first connecting part 110 is provided with a positioning structure 111. The MEMS component 200 includes a connected flexible circuit board module 210 and a reinforcing plate 220. The reinforcing plate 220 is connected to the positioning structure 111 and is provided with a first sound receiving hole 221. The two ends of the flexible circuit board module 210 are provided with electrical connecting parts, and the two ends of the flexible circuit board module 210 pass through the cavity 101 of the intermediate ring 100. The cap 300 is provided with an opening and a cover plate 310 at both ends. The cover plate 310 is provided with a second sound receiving hole 311 that is adapted to the first sound receiving hole 221. The opening of the cap 300 is connected to the first connecting part 110, and the cover plate 310 abuts against the reinforcing plate 220. The cap 300 is an integrally molded structure. When in use, sound is transmitted to the flexible circuit board module 210 through the second sound receiving hole 311 and the first sound receiving hole 221, and is converted into an electrical signal by the flexible circuit board module 210.

[0031] The flexible circuit board module 210 has a bendable flexible structure and features high integration, light weight, and small size, enabling miniaturization and compact design. The reinforcing plate 220 has sufficient mechanical strength to support the flexible circuit board module 210, thereby fixing it in place. The positioning structure 111 of the intermediate ring 100 can position and limit the assembly of the reinforcing plate 220. The intermediate ring 100, together with the cap 300, can fix the MEMS component 200 without the need for threaded fasteners such as screws and bolts, simplifying the internal structure and achieving a compact design.

[0032] Through the above scheme, the MEMS component 200 includes a flexible circuit board module 210 and a reinforcing plate 220. The flexible circuit board module 210 has a high degree of integration, which can realize miniaturized and compact design. The reinforcing plate 220 is connected to the positioning structure 111 of the intermediate ring 100, and can be positioned and limited by the positioning structure 111. The opening of the cap 300 is connected to the first connecting part 110 and the cover plate 310 of the cap 300 abuts against the reinforcing plate 220, which can fix the MEMS component 200, which is beneficial to improving the assembly reliability of the MEMS component 200. The miniaturized MEMS component 200 is fixed by the cooperation of the intermediate ring 100 and the cap 300. The structure is simple, can realize miniaturized design and improve the compactness of the internal structure.

[0033] In some application examples, please refer to Figure 2The positioning structure 111 includes a first positioning part 112 and a second positioning part 113, which together form a foolproof structure. It is worth noting that, in order to achieve miniaturization and compact design, the assembly space of the intermediate ring 100 is limited; therefore, it is difficult to achieve a symmetrical design for the MEMS component 200. To improve the convenience and reliability of assembly, the foolproof structure formed by the first positioning part 112 and the second positioning part 113 can provide positioning and foolproofing effects for the assembly of the MEMS component 200, enabling the MEMS component 200 to connect to the intermediate ring 100 in the expected manner.

[0034] In a specific application example, please refer to... Figure 2 The first positioning part 112 and the second positioning part 113 are two flanges of different sizes or shapes provided on the first connecting part 110. The reinforcing plate 220 is provided with a recess 222 adapted to the two flanges. The intermediate ring 100 is an annular structure. The first connecting part 110 is provided at the first end in the axial direction of the intermediate ring 100. The first positioning part 112 and the second positioning part 113 protrude along the axial direction of the intermediate ring 100. Correspondingly, the reinforcing plate 220 is provided with a recess 222. The shape and size of the recess 222 are adapted to the flanges. The flanges can engage with the recess 222, thereby realizing the functions of positioning and preventing mistaken identity.

[0035] Please refer to Figure 3 and Figure 4 A dustproof mesh 400 is provided between the cover plate 310 and the reinforcing plate 220, covering the first sound receiving hole 221 and the second sound receiving hole 311. The dustproof mesh 400 can play a dustproof role in the sound transmission channel formed by the first sound receiving hole 221 and the second sound receiving hole 311, thereby protecting the MEMS component 200. The dustproof mesh 400 can be attached to the reinforcing plate 220 by adhesive or double-sided tape, or it can be attached to the reinforcing plate 220 by the abutment between the cover plate 310 and the reinforcing plate 220.

[0036] In some application examples, the first connecting part 110 is a sleeve part. For example, the first connecting part 110 of the intermediate ring 100 can be inserted into the cap 300 through the opening of the cap 300 to sleeve with the cap 300. The end of the intermediate ring 100 and the cover plate 310 of the cap 300 form an assembly space for the MEMS component 200. The MEMS component 200 is fixed by the cooperation between the positioning structure 111 of the intermediate ring 100 and the cover plate 310 of the cap 300. Since the MEMS component 200 adopts a combination structure of flexible circuit board module 210 and reinforcing plate 220, it is small in size and light in weight, and can be reliably fixed by the intermediate ring and the cap 300. Alternatively, in other application examples, the first connecting part 110 is a threaded connection part. For example, the outer side of the intermediate ring 100 is provided with an external thread, and the inner wall of the cap 300 is provided with an internal thread. The intermediate ring 100 and the cap 300 are threadedly connected by the cooperation of the external and internal threads, thereby improving the connection reliability between the intermediate ring 100 and the cap 300.

[0037] Please continue to refer to Figure 3 and Figure 4 The second end of the intermediate ring 100 is provided with a second connecting portion 120, and the second connecting portion 120 is connected to a hollow sleeve 500. The sleeve 500 is connected to the second end of the intermediate ring 100 and can extend the internal space of the second end of the intermediate ring 100 to accommodate the two end structures of the flexible circuit board module 210, such as the wing plate 212 below, and provide accommodating space for the conductor 700 below, thereby protecting the conductor 700.

[0038] Please continue to refer to Figure 3 and Figure 4 A sleeve 500 is connected to an insulating sleeve 600, which houses a wire 700. The wire 700 passes through the sleeve 500 and is electrically connected to the electrical connection portion of the flexible circuit board module 210. The insulating sleeve 600 is used to fix the wire 700, which has a positive wire and a negative wire, and the positive and negative wires are insulated from each other. The wire 700 can electrically connect to the electrical connection portion of the flexible circuit board module 210 and is protected by the sleeve 500.

[0039] The second connecting part 120 is a sleeve part or a threaded connection part. The structure of the second connecting part 120 can refer to the first connecting part 110. The connection between the intermediate ring 100 and the sleeve 500 is realized by sleeve or threaded connection, without the need for fasteners such as screws or bolts, which can achieve the effect of simplifying the structure.

[0040] Please refer to Figure 2The flexible circuit board module 210 includes a substrate 211 and wing plates 212 located on both sides of the substrate 211. The substrate 211 and the wing plates 212 are an integral structure, and the wing plates 212 are bent relative to the substrate 211. The substrate 211 is provided with electronic components, and the wing plates 212 are provided with electrical connection parts. It is worth mentioning that, in the design stage, one solution is to use the substrate 211 in the flexible circuit board module 210 and directly solder the wires 700 to the pads on the substrate 211. However, since the solder joint between the wires 700 and the substrate 211 is relatively large, it is difficult to achieve miniaturization design, and the wires 700 are prone to breakage after soldering. By designing an integrated substrate 211 and wing plate 212, sufficient space can be provided for the solder joints. Utilizing the bendable characteristics of the flexible circuit board, the solder joints can be extended into the middle ring 100 or the sleeve 500, achieving a miniaturized and compact design of the substrate 211. At the same time, sufficient space is provided for the soldering between the conductor 700 and the pad. Moreover, the bending angle of the conductor 700 after soldering is small, which helps to improve the reliability of the soldering position.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A MEMS microphone assembly, characterized in that, include: The intermediate ring (100) is provided with a cavity (101) that extends through both ends. The first end of the intermediate ring (100) is provided with a first connecting part (110), and the first connecting part (110) is provided with a positioning structure (111). MEMS component (200) includes a connected flexible circuit board module (210) and a reinforcing plate (220). The reinforcing plate (220) is connected to the positioning structure (111) and is provided with a first sound receiving hole (221). The flexible circuit board module (210) is provided with electrical connection parts at both ends and passes through the cavity (101) of the intermediate ring (100). The cap (300) has an opening and a cover plate (310) at both ends. The cover plate (310) has a second sound receiving hole (311) adapted to the first sound receiving hole (221). The opening of the cap (300) is connected to the first connecting part (110) and the cover plate (310) abuts against the reinforcing plate (220).

2. The MEMS microphone assembly according to claim 1, characterized in that, The positioning structure (111) includes a first positioning part (112) and a second positioning part (113), and the first positioning part (112) and the second positioning part (113) form a foolproof structure.

3. The MEMS microphone assembly according to claim 2, characterized in that, The first positioning part (112) and the second positioning part (113) are two flanges of different sizes or shapes provided on the first connecting part (110), and the reinforcing plate (220) is provided with a recess (222) adapted to the two flanges.

4. The MEMS microphone assembly according to claim 1, characterized in that, A dustproof net (400) is provided between the cover plate (310) and the reinforcing plate (220) to cover the first sound receiving hole (221) and the second sound receiving hole (311).

5. The MEMS microphone assembly according to any one of claims 1 to 4, characterized in that, The first connecting part (110) is a sleeve part or a threaded connecting part.

6. The MEMS microphone assembly according to claim 1, characterized in that, The second end of the intermediate ring (100) is provided with a second connecting part (120), and the second connecting part (120) is connected to a hollow sleeve (500).

7. The MEMS microphone assembly according to claim 6, characterized in that, The sleeve (500) is connected to an insulating sleeve (600), and the insulating sleeve (600) is fitted with a wire (700). The wire (700) passes through the sleeve (500) and is electrically connected to the electrical connection part of the flexible circuit board module (210).

8. The MEMS microphone assembly according to claim 6 or 7, characterized in that, The second connecting part (120) is a sleeve part or a threaded connecting part.

9. The MEMS microphone assembly according to claim 1 or 7, characterized in that, The flexible circuit board module (210) includes a substrate (211) and wing plates (212) located on both sides of the substrate (211). The substrate (211) and the wing plates (212) are an integral structure and the wing plates (212) are bent relative to the substrate (211). The substrate (211) is provided with electronic components and the wing plates (212) are provided with electrical connection parts.

10. An audio system, characterized in that, Includes the MEMS microphone assembly as described in any one of claims 1 to 9.

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