Microphone and electronic device

Abstract

The utility model discloses a microphone and electronic equipment relates to microphone technical field, wherein, microphone includes shell, the shell includes base plate and casing, the base plate and casing configuration form has the accommodation cavity, install sensing chip and ASIC chip in the accommodation cavity, the sensing chip is installed in the base plate, the base plate is equipped with first sound hole, the casing is equipped with second sound hole, first sound hole with second sound hole are divided and set in the opposite sides of sensing chip, the microphone still includes waterproof membrane, the casing corresponds second sound hole and forms the installation slot or installation cavity, waterproof membrane is installed in the installation slot or in the installation cavity, and is covered and is equipped with second sound hole, the utility model provides technical scheme aims at improving waterproof membrane's installation stability to guarantee the waterproof performance of microphone.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to a microphone and electronic device. Background Technology

[0002] With the rapid development of consumer electronics, especially the widespread adoption of smartphones, tablets, wearable devices, and smart home devices, the performance requirements for microphones are increasing. As a core component for acoustic signal acquisition, microphones not only need excellent acoustic performance but also must remain stable and reliable in complex and changing real-world environments, such as resisting the intrusion of rain, sweat, and moisture. While some technologies achieve waterproofing by installing a waterproof membrane at the sound hole, this membrane is easily damaged by scratches and pressure, leading to a decrease or failure in waterproofing performance. Utility Model Content

[0003] The main purpose of this invention is to provide a microphone and electronic device that improves the installation stability of the waterproof membrane to ensure the waterproof performance of the microphone.

[0004] To achieve the above objectives, the microphone proposed in this utility model includes a housing, which includes a substrate and a shell. The substrate and the shell are configured to form a receiving cavity. A sensing chip and an ASIC chip are installed in the receiving cavity. The sensing chip is mounted on the substrate. The substrate is provided with a first sound hole, and the shell is provided with a second sound hole. The first sound hole and the second sound hole are respectively located on opposite sides of the sensing chip.

[0005] The microphone also includes a waterproof membrane. The housing has a mounting groove or mounting cavity corresponding to the second sound hole. The waterproof membrane is installed in the mounting groove or mounting cavity and covers the second sound hole.

[0006] In one embodiment, the housing includes a first housing portion, the first housing portion having the second acoustic hole and the mounting groove.

[0007] In one embodiment, the mounting groove is formed on the side of the first housing portion facing away from the receiving cavity.

[0008] In one embodiment, the housing further includes a second housing portion stacked on top of the first housing portion, the waterproof membrane being located between the first housing portion and the second housing portion, and the second housing portion having a third acoustic hole opposite to the second acoustic hole.

[0009] In one embodiment, the waterproof membrane is exposed on the outer surface of the microphone.

[0010] In one embodiment, the mounting groove is formed on the side of the first housing portion facing the receiving cavity.

[0011] In one embodiment, the thickness of the waterproof membrane is less than the depth of the mounting groove.

[0012] In one embodiment, the housing includes a first housing portion and a third housing portion, the receiving cavity is formed between the first housing portion and the substrate, the mounting cavity is formed between the first housing portion and the third housing portion, one of the first housing portion and the third housing portion is provided with a second acoustic hole, and the other is provided with a fourth acoustic hole opposite to the second acoustic hole.

[0013] In one embodiment, the first shell portion is provided with the second acoustic hole, and the waterproof membrane and the third shell portion are spaced apart.

[0014] In one embodiment, the housing includes a first housing portion and a fourth housing portion, the first housing portion and the substrate being disposed opposite to and spaced apart, the fourth housing portion being disposed between the first housing portion and the substrate and surrounding to form the receiving cavity, and the substrate, the first housing portion and the fourth housing portion being configured as a circuit board.

[0015] This invention also proposes an electronic device that includes the aforementioned microphone.

[0016] In this invention, a waterproof membrane is positioned at and covers the second sound hole, thereby blocking the path of water ingress from the external environment through the second sound hole into the receiving cavity, thus achieving a waterproof function. The waterproof membrane is installed within the mounting groove or cavity, where the wall structure of the groove or cavity provides restraint and protection. This also helps reduce the proportion of the waterproof membrane exposed to the external environment, significantly reducing the risk of scratches or pressure during assembly, drops, or daily use, and improving the installation stability of the waterproof membrane, thereby ensuring the microphone's waterproof performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the microphone provided by this utility model;

[0019] Figure 2 A schematic diagram of another embodiment of the microphone provided by this utility model;

[0020] Figure 3A schematic diagram of another embodiment of the microphone provided by this utility model;

[0021] Figure 4 This is a schematic diagram of another embodiment of the microphone provided by this utility model.

[0022] Explanation of icon numbers:

[0023] 100. Outer shell; 101. First acoustic port; 102. Second acoustic port; 103. Third acoustic port; 104. Fourth acoustic port; 105. Receiving cavity; 106. Mounting slot; 107. Mounting cavity;

[0024] 110. Substrate; 120. Housing; 121. First housing portion; 122. Second housing portion; 123. Third housing portion; 124. Fourth housing portion;

[0025] 210. Sensor chip; 220. ASIC chip; 300. Waterproof membrane.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a microphone.

[0031] Please see Figures 1 to 4 In one embodiment of this utility model, the microphone includes a housing 100, which includes a substrate 110 and a shell 120. The substrate 110 and the shell 120 are configured to form a receiving cavity 105. A sensor chip 210 and an ASIC (Application-Specific Integrated Circuit) chip 220 are installed in the receiving cavity 105. The sensor chip 210 is mounted on the substrate 110. The substrate 110 is provided with a first sound hole 101, and the shell 120 is provided with a second sound hole 102. The first sound hole 101 and the second sound hole 102 are respectively located on opposite sides of the sensor chip 210. In this way, dual-sided sound intake can be achieved to optimize frequency response and sensitivity and improve the microphone's sound pickup effect. The sensing chip 210 can be a MEMS (Micro-Electro-Mechanical System) chip. After the sound wave enters the receiving cavity 105 through the sound hole, it acts on the diaphragm of the sensing chip 210. The sensing chip 210 converts the sound pressure into an electrical signal and transmits the electrical signal to the ASIC chip 220. The ASIC chip 220 integrates functional modules for processing the electrical signal.

[0032] The microphone also includes a waterproof membrane 300. The housing 120 has a mounting groove 106 or a mounting cavity 107 corresponding to the second sound hole 102. The waterproof membrane 300 is installed in the mounting groove 106 or the mounting cavity 107 and covers the second sound hole 102. That is, the waterproof membrane 300 is located at the second sound hole 102 and covers the second sound hole 102, thereby blocking the path of water ingress from the external environment through the second sound hole 102 into the receiving cavity 105, thus achieving a waterproof function. The waterproof membrane 300 is installed in the mounting groove 106 or the mounting cavity 107. The wall structure of the mounting groove 106 or the mounting cavity 107 limits and protects the waterproof membrane 300. Simultaneously, it helps reduce the proportion of the waterproof membrane 300 exposed to the external environment, significantly reducing the risk of the waterproof membrane 300 being scratched or squeezed during assembly, drops, or daily use, and improving the installation stability of the waterproof membrane 300, thereby ensuring the waterproof performance of the microphone.

[0033] It should be noted that a waterproof membrane structure (not shown) is also provided at the first sound hole 101, thereby further ensuring the microphone's waterproof performance. In addition, the membrane structures at each sound hole can be fixed by adhesive, which can provide waterproofing and dust protection while not blocking the transmission of sound waves.

[0034] In one implementation, please refer to Figures 1 to 4 The housing 120 includes a first housing portion 121 and a fourth housing portion 124. The first housing portion 121 and the substrate 110 are disposed opposite to each other and spaced apart. The fourth housing portion 124 is disposed between the first housing portion 121 and the substrate 110 and surrounds the receiving cavity 105. The second sound hole 102 can be opened in the first housing portion 121 to achieve bidirectionality, or it can be opened in the fourth housing portion 124 to adapt to electronic devices with relatively thin thickness.

[0035] The substrate 110, the first shell portion 121, and the fourth shell portion 124 are all configured as circuit boards with conductive layers. The enclosure formed by the substrate 110, the first shell portion 121, and the fourth shell portion 124 creates an electromagnetic shield, which helps ensure the microphone's sound pickup effect. Functional circuitry can be located on at least one of the substrate 110, the first shell portion 121, and the fourth shell portion 124. The ASIC chip 220 can be mounted on any of these three components and electrically connected to the sensor chip 210.

[0036] In other embodiments, only the substrate 110 may be configured as a circuit board, while the first shell portion 121 and the fourth shell portion 124 may be configured as other conductive materials, such as metal or carbon fiber. The first shell portion 121 and the fourth shell portion 124 may be formed separately or as a single piece.

[0037] In one implementation, please refer to Figures 1 to 3 The housing 120 includes a first housing portion 121, which has a second acoustic hole 102 and a mounting groove 106. Specifically, the mounting groove 106 is a recessed groove structure located on one side surface of the first housing portion 121, and the second acoustic hole 102 extends from the other side surface of the second housing portion 122 into the mounting groove 106. The waterproof membrane 300 is installed in the mounting groove 106 to cover the second acoustic hole 102, thereby ensuring the waterproof performance at the second acoustic hole 102. It should be noted that the first housing portion 121 can be opposite to the substrate 110 or can be erected on the substrate 110.

[0038] In one embodiment, the mounting groove 106 is formed on the side of the first housing portion 121 facing away from the receiving cavity 105. This facilitates the inspection and replacement of the waterproof membrane 300.

[0039] Among them, it can be, such as Figure 1 As shown, the housing 120 also includes a second housing portion 122 stacked on top of the first housing portion 121. The waterproof membrane 300 is located between the first housing portion 121 and the second housing portion 122, which helps to enhance the limiting and protective functions of the waterproof membrane 300, thereby ensuring the installation stability of the waterproof membrane 300. The second housing portion 122 is provided with a third sound hole 103 opposite to the second sound hole 102, forming a channel for sound waves to enter. In addition, the thickness of the waterproof membrane 300 is less than the depth of the mounting groove 106, so the waterproof membrane 300 will not protrude relative to the surface of the first housing portion 121. During the assembly process of the second housing portion 122 being stacked on the first housing portion 121, the waterproof membrane 300 will not be subjected to the force of the second housing portion 122, which helps to ensure the installation stability of the waterproof membrane 300. After assembly, there is a gap between the waterproof membrane 300 and the second housing portion 122, allowing the waterproof membrane 300 to vibrate slightly under the action of sound waves, reducing the suppression of acoustic performance.

[0040] It could also be, such as Figure 2 As shown, the waterproof membrane 300 is exposed on the outer surface of the microphone. In addition, the thickness of the waterproof membrane 300 is less than the depth of the mounting groove 106, which can prevent the waterproof membrane 300 from protruding from the groove of the mounting groove 106. That is, the waterproof membrane 300 will not protrude relative to the outer surface of the housing 120, which significantly reduces the risk of the waterproof membrane 300 being scratched or squeezed during assembly, drops or daily use.

[0041] In one implementation, please refer to Figure 3The mounting groove 106 is formed on the side of the first housing portion 121 facing the receiving cavity 105. Thus, the waterproof membrane 300 is essentially located inside the receiving cavity 105 and is not exposed to the outside, being protected by the housing 120. By preventing the waterproof membrane 300 from direct contact with the external environment, it is essentially protected from scratches, pressure, and other damaging forces, which helps improve the installation stability of the waterproof membrane 300, thereby further ensuring the microphone's waterproof performance.

[0042] In one implementation, please refer to Figure 4 The housing 120 includes a first housing portion 121 and a third housing portion 123. The receiving cavity 105 is formed between the first housing portion 121 and the substrate 110. The mounting cavity 107 is formed between the first housing portion 121 and the third housing portion 123. One of the first housing portion 121 and the third housing portion 123 is provided with the second sound hole 102, and the other is provided with a fourth sound hole 104 opposite to the second sound hole 102.

[0043] It is understood that the waterproof membrane 300 needs to cover the second acoustic hole 102, and the waterproof membrane 300 is positioned in either the first shell portion 121 or the third shell portion 123 where the second acoustic hole 102 is located. When the first shell portion 121 forms the second acoustic hole 102, the third shell portion 123 will form the fourth acoustic hole 104. The waterproof membrane 300 is covered on the side of the first shell portion 121 facing the third shell portion 123. The second acoustic hole 102 is directly connected to the receiving cavity 105, and the sound waves enter the receiving cavity 105 sequentially through the fourth acoustic hole 104 and the second acoustic hole 102. When the first shell portion 121 forms the fourth acoustic hole 104, the third shell portion 123 will form the second acoustic hole 102. The waterproof membrane 300 is covered on the side of the third shell portion 123 facing the first shell portion 121, and the sound waves enter the receiving cavity 105 sequentially through the second acoustic hole 102 and the fourth acoustic hole 104.

[0044] In this embodiment, the mounting cavity 107 is formed by the first shell portion 121 and the second shell portion 122. The waterproof membrane 300 is installed in the mounting cavity 107 and can be strongly protected. At the same time, when the first shell portion 121 is set as a circuit board, there is no need to cut a groove on the first shell portion 121. The third shell portion 123 can be made of metal. The first shell portion 121 is provided with solder pads, and the third shell portion 123 is connected to the solder pads by welding, thereby fixing the first shell portion 121 and the third shell portion 123.

[0045] Furthermore, the first housing portion 121 is provided with the second sound hole 102, and the waterproof membrane 300 and the third housing portion 123 are spaced apart. That is, the waterproof membrane 300 is disposed on the first housing portion 121, and the gap between the waterproof membrane 300 and the third housing portion 123 prevents the third housing portion 123 from transmitting external force to the waterproof membrane 300 when subjected to external force, thereby reducing the risk of deformation of the waterproof membrane 300 and ensuring the waterproof effect of the microphone. At the same time, the gap allows the waterproof membrane 300 to vibrate slightly under the action of sound waves, reducing the suppression of acoustic performance.

[0046] This utility model also proposes an electronic device, which includes a microphone. The specific structure of the microphone is as described in the above embodiments. Since this electronic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here. Specifically, the electronic device can be a smartphone, tablet computer, wearable device, or smart home device.

[0047] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A microphone, characterized in that, The microphone includes a housing, which includes a substrate and a shell. The substrate and shell are configured to form a receiving cavity. A sensor chip and an ASIC chip are installed in the receiving cavity. The sensor chip is mounted on the substrate. The substrate has a first sound hole, and the shell has a second sound hole. The first sound hole and the second sound hole are respectively located on opposite sides of the sensor chip. The microphone also includes a waterproof membrane. The housing has a mounting groove or mounting cavity corresponding to the second sound hole. The waterproof membrane is installed in the mounting groove or mounting cavity and covers the second sound hole.

2. The microphone as described in claim 1, characterized in that, The housing includes a first housing portion, which has the second acoustic hole and the mounting groove.

3. The microphone as described in claim 2, characterized in that, The mounting groove is formed on the side of the first housing portion facing away from the receiving cavity.

4. The microphone as described in claim 3, characterized in that, The housing further includes a second housing portion stacked on the first housing portion, the waterproof membrane being located between the first housing portion and the second housing portion, and the second housing portion being provided with a third acoustic hole opposite to the second acoustic hole; Alternatively, the waterproof membrane may be exposed on the outer surface of the microphone.

5. The microphone as described in claim 2, characterized in that, The mounting groove is formed on the side of the first housing portion facing the receiving cavity.

6. The microphone as claimed in claim 2, characterized in that, The thickness of the waterproof membrane is less than the depth of the mounting groove.

7. The microphone as claimed in claim 1, characterized in that, The housing includes a first housing portion and a third housing portion, the receiving cavity is formed between the first housing portion and the substrate, the mounting cavity is formed between the first housing portion and the third housing portion, one of the first housing portion and the third housing portion is provided with the second acoustic hole, and the other is provided with a fourth acoustic hole opposite to the second acoustic hole.

8. The microphone as claimed in claim 7, characterized in that, The first shell portion is provided with the second acoustic hole, and the waterproof membrane and the third shell portion are spaced apart.

9. The microphone as claimed in any one of claims 1 to 8, characterized in that, The housing includes a first housing portion and a fourth housing portion. The first housing portion and the substrate are disposed opposite to each other and spaced apart. The fourth housing portion is disposed between the first housing portion and the substrate and surrounds the receiving cavity. The substrate, the first housing portion and the fourth housing portion are all configured as circuit boards.

10. An electronic device, characterized in that, Includes the microphone as described in any one of claims 1 to 9.

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