Microphone airtight structure and intelligent device

Abstract

The utility model relates to a microphone airtight structure and intelligent equipment, and belongs to the field of intelligent equipment. A microphone airtight structure comprises: a housing assembly, which is provided with an accommodating cavity; the circuit board is arranged on the shell assembly and located in the containing cavity; the microphone device is arranged on the circuit board; the protective hard shell is arranged on the shell assembly and located in the containing cavity, and the protective hard shell is provided with a protective cavity; the protection soft sleeve is arranged on the microphone device and arranged around the microphone device, the protection soft sleeve is located in the protection cavity, and the protection hard shell is arranged around the protection soft sleeve; and the connecting piece is clamped between the protective soft sleeve and the circuit board. The protection soft sleeve is arranged around the microphone device, the gap can be filled in a self-adaptive mode by means of the flexible characteristic of the protection soft sleeve, even if assembly or part size errors exist, the protection soft sleeve can be tightly attached to the microphone device through elastic deformation, and the problem of insufficient airtightness caused by the errors is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of smart devices, and in particular to a microphone airtight structure and a smart device. Background Technology

[0002] Currently, most smart terminal devices on the market have voice intercom functionality. However, the quality of their voice intercom is generally poor. The main reason for this is a defect in the airtight method used in the microphone components within the devices, resulting in noise during voice recognition. Currently, the common method for airtightening microphones in smart terminals is using rigid structural covers. While this method achieves a certain degree of sealing, it has significant drawbacks. On one hand, improper handling during assembly or failure to strictly control component dimensional errors can lead to quality risks and insufficient airtightness. On the other hand, this airtight method also increases the difficulty of assembling the device and manufacturing the components. Utility Model Content

[0003] Therefore, it is necessary to provide a microphone airtight structure and a smart device to address the problem of poor sealing of microphone components in smart devices.

[0004] An airtight microphone structure includes: a housing assembly having a receiving cavity; a circuit board disposed on the housing assembly and located within the receiving cavity; a microphone device disposed on the circuit board; a protective hard shell disposed on the housing assembly and located within the receiving cavity, the protective hard shell having a protective cavity; a protective soft sleeve disposed on and surrounding the microphone device, the protective soft sleeve being located within the protective cavity, the protective hard shell surrounding the protective soft sleeve; and a connector sandwiched between the protective soft sleeve and the circuit board.

[0005] The above-disclosed microphone airtight structure has several key features. First, the housing assembly's cavity provides a stable and orderly mounting space for all internal components, allowing for the orderly arrangement of components such as the circuit board and protective hard shell. Second, the dual-protection structure combining a protective hard shell and a protective soft sleeve changes the traditional airtight method of using a single rigid structural component cover. The protective soft sleeve surrounds the microphone device and can adaptively fill gaps using its flexibility. Even with assembly or component size errors, it can tightly fit the microphone device through elastic deformation, effectively avoiding insufficient airtightness due to errors, greatly reducing quality risks, and significantly improving airtight reliability compared to traditional methods. The presence of the connector further strengthens this protective system. It is sandwiched between the protective sleeve and the circuit board, and its adhesive properties ensure a tight fit between the protective sleeve and the circuit board, ensuring no gaps between them. This prevents external air, moisture, and dust from entering through gaps, greatly improving the airtightness around the microphone device. The excellent airtightness allows the microphone device to work in a relatively stable environment, reducing interference from external noise, significantly improving the accuracy of voice recognition and the quality of voice communication, bringing users a clearer and smoother voice interaction experience, enhancing the competitiveness of smart terminal devices in the market, and providing reliable technical support for the performance upgrade of related products.

[0006] In one embodiment, the protective sleeve has a mounting cavity and a transmission channel. The microphone device is located in the mounting cavity, and the housing assembly has an input hole. The input hole, the transmission channel, and the mounting cavity are sequentially connected. By cooperating with the input hole of the housing assembly, the mounting cavity and transmission channel in the protective sleeve constitute an efficient and stable sound transmission and protection system. The mounting cavity provides a precisely fitted installation space for the microphone device. Its tight fit effectively reduces displacement of the microphone device due to vibration during device operation, avoiding abnormal sound acquisition caused by poor contact. Simultaneously, the cushioning effect of the soft material absorbs external impact, reducing the risk of physical damage to the microphone device. The transmission channel, connected sequentially to the input hole and the mounting cavity, forms a dedicated transmission path for the sound signal. This direct-through design minimizes sound propagation loss, ensuring that external sounds can be transmitted to the microphone device quickly and without distortion, thereby improving the clarity and accuracy of voice acquisition. Compared to the noise problems caused by sound reflection and refraction that easily occur in traditional airtight structures, this structure effectively avoids sound interference through a reasonable channel layout, ensuring the purity of the device when recognizing speech.

[0007] In one embodiment, the protective sleeve includes a sleeve body and a protrusion. The sleeve body is disposed on the microphone device, the connector is clamped between the sleeve body and the circuit board, the protrusion is disposed on the sleeve body, the housing assembly abuts against the protrusion, the sleeve body is located in the protective cavity, the sleeve body has a mounting cavity, and the transmission channel passes through the sleeve body and the protrusion. By utilizing the mounting cavity inside the sleeve body to enclose the microphone device, combined with a stable fit, the microphone's shaking during use can be reduced, avoiding noise interference caused by vibration, while also buffering external impacts and protecting the microphone device from physical damage. The sleeve body, connector, and circuit board fit tightly together, ensuring the protective sleeve adheres firmly to the circuit board, guaranteeing stable installation of the protective sleeve, and effectively preventing airtightness failure due to loosening. The 0.3mm height of the protrusion serves a dual purpose. On one hand, it abuts against the housing assembly, filling the gap between the protective sleeve and the housing assembly, further enhancing the airtightness of the entire structure and preventing external dust, moisture, and other impurities from entering through the gaps, thus providing more robust protection for the microphone components and circuit board. On the other hand, the transmission channel runs through the main body of the sleeve and the protrusion, creating a stable channel for sound signal transmission. The protrusion, in conjunction with the input hole, optimizes the path of sound entering the mounting cavity from the outside, reducing sound loss and interference during transmission, ensuring high-quality voice acquisition, and improving the accuracy and reliability of the device's voice recognition. This structural design effectively solves the problems of high assembly difficulty, high component manufacturing requirements, and insufficient airtightness associated with traditional hard-cover airtight methods, significantly improving the practicality and stability of the microphone's airtight structure.

[0008] In one embodiment,

[0009] In one embodiment, the soft sleeve body includes a connecting surface and a sealing surface. The sealing surface abuts against the microphone device, the connecting surface is disposed on the connector, the transmission channel passes through the sealing surface, and the mounting cavity passes through the connecting surface. By tightly connecting the connecting surface and the connector, a reliable foundation is provided for the stable connection between the protective soft sleeve and the circuit board, allowing the protective soft sleeve to firmly adhere to the microphone device and the circuit board, preventing unstable sound acquisition or component displacement due to loosening, and ensuring the stability and durability of the overall structure. The sealing surface abuts against the microphone device, forming a tight sealing barrier, effectively preventing external dust, moisture, and other impurities from entering the mounting cavity from the contact area between the microphone device and the protective soft sleeve, thus improving the protection level of the microphone device. At the same time, the transmission channel passes through the sealing surface. While ensuring efficient transmission of sound signals, the sealing characteristics of the sealing surface prevent external interference sound from entering from the edge of the transmission channel, further optimizing the purity and accuracy of sound acquisition. The mounting cavity extends through the connecting surface, allowing the microphone device to be easily installed inside the protective soft sleeve. After installation, the connecting surface is tightly fixed to the circuit board via connectors, limiting and supporting the microphone device from multiple directions to ensure stable operation during use. This effectively solves the problem of insufficient airtightness caused by assembly errors in traditional rigid structural cover, reduces assembly difficulty and component manufacturing requirements, and improves the overall quality and reliability of the product.

[0010] In one embodiment, the horizontal height of the sealing surface is greater than that of the connecting surface. Designing the sealing surface to be higher than the connecting surface is a key step in providing comprehensive protection for the microphone device. This height difference allows the sealing surface to form a tighter fit and coverage of the microphone device from above and the sides. Compared to a flush structure, this effectively reduces contact gaps between the top and edges of the microphone device and the outside environment, preventing dust, moisture, and other impurities from entering the mounting cavity from above. Simultaneously, the raised portion of the sealing surface provides more buffer space for the microphone device when subjected to external impacts or vibrations, further enhancing its shock resistance and reducing the risk of damage from physical collisions. Furthermore, this height difference, combined with the overall structure of the soft sleeve body, forms a more enclosed protective space after being fixed to the circuit board via connectors, optimizing airtightness and reducing interference from external environmental factors on the microphone device's sound acquisition, thereby significantly improving the quality of voice acquisition and the stability of device operation.

[0011] In one embodiment, the connecting surface covers the same area as the sealing surface in the projection area of ​​the soft sleeve body. By covering the sealing surface in the projection area of ​​the soft sleeve body with the connecting surface, on the one hand, the large area of ​​the connecting surface covering the sealing surface allows the connector to more securely connect the protective soft sleeve to the circuit board. Under the adhesive effect of the connector, the soft sleeve body and the circuit board fit tightly together, forming a robust installation structure, reducing the risk of loosening of the protective soft sleeve due to vibration or external force, thereby ensuring the positional stability of the microphone device. On the other hand, the sealing surface being covered within the projection area of ​​the connecting surface fully utilizes its sealing effect against the microphone device. The tight contact between the sealing surface and the microphone device, combined with the secure connection between the connecting surface and the circuit board, effectively prevents external dust, moisture, and other impurities from entering through gaps between the protective soft sleeve and the microphone device / circuit board, further enhancing the airtight effect.

[0012] In one embodiment, the soft sleeve body and the protrusion are integrally formed. By designing the soft sleeve body and the protrusion as an integral unit, gaps caused by splicing in a split structure are avoided. This fundamentally eliminates the risk of external dust, moisture, and other impurities entering the mounting cavity through gaps and damaging the microphone device, greatly improving the sealing performance of the entire airtight structure and ensuring that the microphone device is always in a stable and safe working environment.

[0013] In one embodiment, the housing assembly and the protective hard shell are integrally molded. This integral design avoids gaps and loosening issues that may occur during traditional assembly methods, significantly improving the overall rigidity and stability of the microphone's airtight structure. This effectively reduces frictional noise caused by relative displacement of components and also reduces the impact of external vibrations on the microphone, resulting in more stable sound acquisition.

[0014] In one embodiment, the protrusion has a circular cross-sectional shape. By setting the cross-sectional shape of the protrusion to be circular, standardized production is easier to achieve during the manufacturing process, mold design and processing are less difficult, and production costs are reduced.

[0015] In one embodiment, the protrusion has a square cross-sectional shape. By setting the cross-sectional shape of the protrusion to square, the processing technology of square protrusions is relatively simple, and the square structure design makes it easier to achieve high-precision machining during mold manufacturing.

[0016] In one embodiment, a gap exists between the inner wall of the protective hard shell and the outer wall of the protective soft sleeve. This 0.1mm gap provides the structure with a certain degree of cushioning elasticity. When the device encounters external impact or vibration, the protective soft sleeve can shift moderately within the gap, preventing damage to itself or the microphone components due to rigid compression. This effectively absorbs and disperses external forces, enhancing the overall impact resistance of the structure. Secondly, the 0.1mm gap provides space for the thermal expansion and contraction of the protective soft sleeve. During device operation, the internal components generate heat, causing slight deformation of the material. This gap prevents the protective soft sleeve from deforming and being damaged due to hindered thermal expansion, ensuring its continuous protection of the microphone components. The protective soft sleeve is made of black silicone with a Shore hardness of 30°. This material has excellent elasticity and cushioning properties. When the protective soft sleeve is subjected to external impact, it can effectively absorb and disperse the impact force, thereby protecting the microphone components from collision damage. The connector is model 300LSE, ensuring a firm adhesion between the protective soft sleeve and the circuit board.

[0017] In one embodiment, the housing assembly includes a lower housing and an upper housing. The upper housing is disposed on the lower housing and abuts against the protective sleeve. The circuit board is disposed on the lower housing, and the upper and lower housings together form the receiving cavity. By utilizing the upper and lower housings to form the receiving cavity, a sealed space is provided for the internal circuit board, microphone devices, etc., preventing dust, moisture, foreign objects, etc., from entering and avoiding damage to electronic components, thus affecting the performance and lifespan of the microphone devices. The lower housing is used to fix the circuit board, providing a stable mounting platform for the circuit board and ensuring that all components on the circuit board, including the microphone devices, are in the correct position, preventing displacement during use. The upper housing abuts against the protective sleeve, further compressing the protective sleeve, allowing it to better surround the microphone devices and ensuring the stability of the entire airtight structure.

[0018] In one embodiment, the lower housing includes a main housing and multiple support pillars. These support pillars are disposed on the main housing, and the upper housing is disposed on the main housing. The circuit board is disposed on the multiple support pillars. By placing the multiple support pillars on the main housing, stable support is provided for the circuit board, allowing it to remain in a specific position and avoiding potential problems such as shaking, friction, or short circuits that could occur from direct contact with the main housing. Furthermore, by placing the circuit board on the support pillars, sufficient space is ensured between the circuit board and the main housing, facilitating airflow and heat dissipation, and preventing performance degradation or damage to the electronic components on the circuit board due to overheating.

[0019] A second aspect of this application discloses a smart device, which includes: the aforementioned microphone airtight structure; and a smart device body, wherein the microphone airtight structure is disposed on the smart device body.

[0020] The second aspect disclosed above discloses a smart device in which a microphone airtight structure is installed on the device body. This airtight structure forms a stable, sealed space through multiple layers of protection, including a protective hard shell and a protective soft sleeve. This isolates the microphone from external noise interference, preventing speech recognition errors caused by external noise, resulting in purer voice signal acquisition and ensuring clear and accurate sound during voice communication. Compared with traditional rigid structural cover airtight methods, this structural design reduces airtightness issues caused by assembly or component size errors, effectively reducing quality risks and improving the stability and reliability of speech recognition. Attached Figure Description

[0021] Figure 1 This is a first perspective view of the housing assembly;

[0022] Figure 2 for Figure 1 A magnified view of a portion of region A;

[0023] Figure 3 This is a second perspective view of the housing assembly;

[0024] Figure 4 for Figure 3 A magnified view of a portion of region B;

[0025] Figure 5 This is a third perspective view of the housing assembly;

[0026] Figure 6 for Figure 5 A magnified view of a portion of region C;

[0027] Figure 7 This is a cross-sectional view of the housing assembly;

[0028] Figure 8 for Figure 7 A magnified view of a portion of region D;

[0029] Figure 9 A perspective view of the housing assembly and circuit board;

[0030] Figure 10 for Figure 9 A magnified view of a portion of region E;

[0031] Figure 11 First perspective view for protecting the soft sleeve;

[0032] Figure 12 A second perspective view to protect the soft sleeve.

[0033] The correspondence between the reference numerals and the component names is as follows:

[0034] 1. Housing assembly, 11. Lower housing, 111. Main housing, 112. Support column, 12. Upper housing, 101. Receiving cavity, 102. Input hole;

[0035] 2. Circuit boards;

[0036] 3. Microphone devices;

[0037] 4. Protective hard shell, 401 protective cavity;

[0038] 5 Protective soft sleeve, 51 Soft sleeve body, 511 Connecting surface, 512 Sealing surface, 52 Protrusion, 501 Housing cavity, 502 Transmission channel;

[0039] 6 connectors. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0042] The following description, with reference to the accompanying drawings, describes some embodiments of the microphone airtight structure and intelligent device of this utility model.

[0043] Example 1

[0044] like Figures 1 to 12 As shown, this embodiment discloses an airtight microphone structure, including: a housing assembly 1, the housing assembly 1 having a receiving cavity 101; a circuit board 2, the circuit board 2 being disposed on the housing assembly 1 and located in the receiving cavity 101; a microphone device 3, the microphone device 3 being disposed on the circuit board 2; a protective hard shell 4, the protective hard shell 4 being disposed on the housing assembly 1 and located in the receiving cavity 101, the protective hard shell 4 having a protective cavity 401; a protective soft sleeve 5, the protective soft sleeve 5 being disposed on the microphone device 3 and surrounding the microphone device 3, the protective soft sleeve 5 being located in the protective cavity 401, the protective hard shell 4 surrounding the protective soft sleeve 5; and a connector 6, the connector 6 being sandwiched between the protective soft sleeve 5 and the circuit board 2.

[0045] This application discloses an airtight microphone structure. First, the receiving cavity 101 of the housing assembly 1 provides a stable and orderly installation space for the internal components, and its structural design allows for the orderly arrangement of components such as the circuit board 2 and the protective hard shell 4. Second, the dual protective structure combining the protective hard shell 4 and the protective soft sleeve 5 changes the traditional airtight method of a single rigid structural component cover. The protective soft sleeve 5 is set around the microphone device 3 and can adaptively fill gaps using its flexible characteristics. Even with assembly or component size errors, it can tightly fit the microphone device 3 through elastic deformation, effectively avoiding airtightness problems caused by errors, greatly reducing quality risks, and significantly improving airtight reliability compared to traditional methods. The presence of connector 6 further strengthens this protective system. It is sandwiched between the protective sleeve 5 and the circuit board 2, and its adhesive properties ensure that the protective sleeve 5 and the circuit board 2 fit tightly together, ensuring that there are no gaps between them. This prevents external air, moisture and dust from entering through the gaps, greatly improving the airtightness around the microphone device 3. The good airtightness allows the microphone device 3 to work in a relatively stable environment, reducing interference from external noise, significantly improving the accuracy of voice recognition and the quality of voice communication, bringing users a clearer and smoother voice interaction experience, enhancing the competitiveness of smart terminal devices in the market, and providing reliable technical support for the performance upgrade of related products.

[0046] like Figure 2 , Figure 7 , Figure 8 and Figure 12 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the protective sleeve 5 is provided with a mounting cavity 501 and a transmission channel 502, the microphone device 3 is located in the mounting cavity 501, and the housing assembly 1 is provided with an input hole 102. The input hole 102, the transmission channel 502, and the mounting cavity 501 are sequentially connected. By cooperating with the mounting cavity 501 and the transmission channel 502 provided in the protective sleeve 5, and the input hole 102 of the housing assembly 1, an efficient and stable sound transmission and protection system is formed. The mounting cavity 501 provides a precisely fitted installation space for the microphone device 3. Its tight fit design can effectively reduce the displacement of the microphone device 3 caused by vibration during equipment operation, and avoid abnormal sound acquisition due to poor contact. At the same time, the buffering effect of the soft material can absorb external impact force and reduce the risk of physical damage to the microphone device 3. The transmission channel 502 is sequentially connected with the input hole 102 and the mounting cavity 501, forming a dedicated transmission path for the sound signal. This direct-through design minimizes sound propagation loss, ensuring that external sounds are transmitted to the microphone device 3 quickly and without distortion, thereby improving the clarity and accuracy of voice acquisition. Compared to the noise problems caused by sound reflection and refraction that are prone to occur in traditional airtight structures, this structure effectively avoids sound interference through a reasonable channel layout, ensuring the purity of the device when recognizing speech.

[0047] like Figure 7 , Figure 8 , Figure 10 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further defines: the protective sleeve 5 includes a sleeve body 51 and a protrusion 52. The sleeve body 51 is disposed on the microphone device 3, the connector 6 is sandwiched between the sleeve body 51 and the circuit board 2, the protrusion 52 is disposed on the sleeve body 51, the housing assembly 1 abuts against the protrusion 52, the sleeve body 51 is located in the protective cavity 401, the sleeve body 51 has a mounting cavity 501, and the transmission channel 502 passes through the sleeve body 51 and the protrusion 52. By using the mounting cavity 501 inside the sleeve body 51 to wrap the microphone device 3, the combined stable fit can reduce the shaking of the microphone during use, avoid noise interference caused by vibration, and at the same time buffer external impact force to protect the microphone device 3 from physical damage. The sleeve body 51 is tightly fitted with the connector 6 and the circuit board 2, so that the protective sleeve 5 is firmly adhered to the circuit board 2, ensuring the stable installation of the protective sleeve 5 and effectively preventing airtightness failure caused by loosening. The 0.3mm height of the protrusion 52 serves a dual purpose. On the one hand, it abuts against the housing assembly 1, filling the gap between the protective soft sleeve 5 and the housing assembly 1, further enhancing the sealing of the entire airtight structure and preventing external dust, moisture, and other impurities from entering through the gaps, thus providing more stringent protection for the microphone device 3 and the circuit board 2. On the other hand, the transmission channel 502 runs through the soft sleeve body 51 and the protrusion 52, creating a stable channel for sound signal transmission. The protrusion 52 cooperates with the input hole 102 to optimize the path of sound entering the mounting cavity 501 from the outside, reducing sound loss and interference during transmission, ensuring high-quality voice acquisition, and improving the accuracy and reliability of the device's voice recognition. This structural design effectively solves the problems of high assembly difficulty, high component manufacturing requirements, and insufficient airtightness in traditional hard cover airtight methods, significantly improving the practicality and stability of the microphone airtight structure.

[0048] like Figure 7 , Figure 8 , Figure 11 and Figure 12As shown, in addition to the features of the above embodiments, this embodiment further defines: the soft sleeve body 51 includes a connecting surface 511 and a sealing surface 512. The sealing surface 512 abuts against the microphone device 3, the connecting surface 511 is disposed on the connector 6, the transmission channel 502 passes through the sealing surface 512, and the mounting cavity 501 passes through the connecting surface 511. By tightly connecting the connecting surface 511 to the connector 6, a reliable foundation is provided for the stable connection between the protective soft sleeve 5 and the circuit board 2, enabling the protective soft sleeve 5 to be firmly attached to the microphone device 3 and the circuit board 2, preventing unstable sound acquisition or component displacement due to loosening, and ensuring the stability and durability of the overall structure. The sealing surface 512 abuts against the microphone device 3, forming a tight sealing barrier, effectively preventing external dust, moisture, and other impurities from entering the mounting cavity 501 from the contact area between the microphone device 3 and the protective soft sleeve 5, thereby improving the protection level of the microphone device 3. Meanwhile, the transmission channel 502 penetrates the sealing surface 512. While ensuring efficient transmission of sound signals, the sealing characteristics of the sealing surface 512 prevent external interference from entering through the edge of the transmission channel 502, further optimizing the purity and accuracy of sound acquisition. The mounting cavity 501 penetrates the connecting surface 511, allowing the microphone device 3 to be easily installed inside the protective soft sleeve 5. After installation, the connecting surface 511 is tightly fixed to the circuit board 2 via the connector 6, limiting and supporting the microphone device 3 from multiple directions, ensuring its stable operation during use. This effectively solves the problem of insufficient airtightness caused by assembly errors in traditional rigid structural cover components, reduces assembly difficulty and component manufacturing requirements, and improves the overall quality and reliability of the product.

[0049] like Figure 12 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the horizontal height of the sealing surface 512 is greater than the horizontal height of the connecting surface 511. Designing the horizontal height of the sealing surface 512 to be greater than that of the connecting surface 511 is a key step in providing all-around protection for the microphone device 3. This height difference allows the sealing surface 512 to form a tighter fit and coverage of the microphone device 3 from above and the sides. Compared to a flush structure, this effectively reduces the contact gaps between the top and edges of the microphone device 3 and the outside environment, preventing external dust, moisture, and other impurities from entering the mounting cavity 501 from above. Simultaneously, the raised portion of the sealing surface 512 provides more sufficient buffer space for the microphone device 3 when the device is subjected to external impact or vibration, further enhancing its shockproof performance and reducing the risk of damage to the microphone device 3 due to physical collisions. Furthermore, this height difference, combined with the overall structure of the soft sleeve body 51, can form a more enclosed protective space after being fixed to the circuit board 2 by the connector 6, optimizing the airtight effect and reducing the interference of external environmental factors on the sound acquisition of the microphone device 3, thereby significantly improving the quality of voice acquisition and the stability of equipment operation.

[0050] like Figure 12 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the connecting surface 511 covers the projection area of ​​the sealing surface 512 in the projection area of ​​the soft sleeve body 51. By utilizing the connecting surface 511 covering the projection area of ​​the sealing surface 512 in the projection area of ​​the soft sleeve body 51, on the one hand, the connecting surface 511 covers the sealing surface 512 over a large area, allowing the connector 6 to more securely connect the protective soft sleeve 5 to the circuit board 2. Under the adhesive effect of the connector 6, the soft sleeve body 51 and the circuit board 2 are tightly fitted, forming a solid installation structure, reducing the risk of the protective soft sleeve 5 loosening due to vibration or external force, thereby ensuring the positional stability of the microphone device 3. On the other hand, the sealing surface 512 is covered within the projection area of ​​the connecting surface 511, which can fully exert its sealing effect against the microphone device 3. The sealing surface 512 is in close contact with the microphone device 3, and combined with the stable connection between the connecting surface 511 and the circuit board 2, it can effectively prevent external dust, moisture and other impurities from entering through the gap between the protective soft sleeve 5 and the microphone device 3 and the circuit board 2, further enhancing the airtight effect.

[0051] like Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the soft sleeve body 51 and the protrusion 52 are integrally formed. By designing the soft sleeve body 51 and the protrusion 52 as an integral unit, gaps caused by splicing in a split structure are avoided, fundamentally eliminating the risk of external dust, moisture, and other impurities entering the housing cavity 501 through gaps and thus damaging the microphone device 3. This greatly improves the sealing performance of the entire airtight structure and ensures that the microphone device 3 is always in a stable and safe working environment.

[0052] like Figure 1 , Figure 3 and Figure 4 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the housing assembly 1 and the protective hard shell 4 are integrally formed. By designing the housing assembly 1 and the protective hard shell 4 as an integral unit, problems such as gaps and looseness that may occur in the connection between the two in traditional assembly methods are avoided, significantly improving the overall rigidity and stability of the microphone's airtight structure. This effectively reduces frictional noise caused by the relative displacement of components and also reduces the impact of external vibrations on the microphone device 3, making sound acquisition more stable.

[0053] like Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional shape of the protrusion 52 is circular. By setting the cross-sectional shape of the protrusion 52 to be circular, standardized production is easier to achieve during the manufacturing process, the mold design and processing difficulty is lower, and production costs are reduced.

[0054] like Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional shape of the protrusion 52 is square. By setting the cross-sectional shape of the protrusion 52 to square, the processing technology of the square protrusion is relatively simple, and the design of the square structure is easier to achieve high-precision processing during the mold manufacturing process.

[0055] like Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further specifies that there is a gap between the inner wall of the protective hard shell 4 and the outer wall of the protective soft shell 5. By utilizing the 0.1mm gap between the protective hard shell 4 and the protective soft shell 5, the structure is given a certain degree of buffering elasticity. When the device encounters external impact or vibration, the protective soft shell 5 can move moderately within the gap range, avoiding damage to itself or the microphone device 3 due to rigid compression, effectively absorbing and dispersing external forces, and enhancing the overall impact resistance of the structure. Secondly, the 0.1mm gap provides space for the thermal expansion and contraction of the protective soft shell 5. During the operation of the device, the internal components generate heat, causing slight deformation of the material. This gap can prevent the protective soft shell 5 from deforming and being damaged due to hindered thermal expansion, ensuring its continuous protection capability for the microphone device 3. The protective soft shell 5 is made of black silicone with a Shore hardness of 30°. This material has excellent elasticity and buffering performance. When the protective soft shell 5 is subjected to external impact, it can effectively absorb and disperse the impact force, thereby protecting the microphone device 3 from collision damage. The connector 6 is model 300LSE, which ensures that the protective sleeve 5 is firmly bonded to the circuit board 2.

[0056] like Figure 1 , Figure 3 and Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further defines: the housing assembly 1 includes a lower housing 11 and an upper housing 12. The upper housing 12 is disposed on the lower housing 11 and abuts against the protective soft sleeve 5. The circuit board 2 is disposed on the lower housing 11, and the upper housing 12 and the lower housing 11 enclose and form a receiving cavity 101. By utilizing the upper housing 11 and the lower housing 12 to enclose and form the receiving cavity 101, a closed space is provided for the internal circuit board 2, microphone device 3, etc., which can prevent dust, moisture, foreign objects, etc. from entering, avoiding these factors from damaging electronic components and affecting the performance and service life of the microphone device 3. The lower housing 12 is used to fix the circuit board 2, providing a stable mounting platform for the circuit board 2, ensuring that all components on the circuit board 2, including the microphone device 3, are in the correct position and preventing displacement during use. The upper housing 11 abuts against the protective soft sleeve 5, further compressing the protective soft sleeve, so that the protective soft sleeve 5 can better surround the microphone device 3, ensuring the stability of the entire airtight structure.

[0057] like Figure 3 , Figure 5 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines: the lower housing 11 includes a main housing 111 and support columns 112, with multiple support columns 112 disposed on the main housing 111, the upper housing 12 disposed on the main housing 111, and the circuit board 2 disposed on the multiple support columns 112. By disposing of the multiple support columns 112 on the main housing 111, stable support is provided for the circuit board 2, enabling the circuit board 2 to be held in a specific position and avoiding potential problems such as shaking, friction, or short circuits that may occur due to direct contact with the main housing 111. By disposing of the circuit board 2 on the support columns 112, a certain space is ensured between the circuit board 2 and the main housing 111, which facilitates air circulation, heat dissipation, and prevents the electronic components on the circuit board 2 from degrading in performance or being damaged due to overheating.

[0058] Example 2

[0059] like Figures 1 to 12 As shown, this embodiment discloses a smart device, including: the above-mentioned microphone airtight structure; and a smart device body, wherein the microphone airtight structure is disposed on the smart device body.

[0060] The second aspect of this application discloses a smart device in which a microphone airtight structure is disposed on the device body. This airtight structure, through multiple layers of protection including a protective hard shell 4 and a protective soft sleeve 5, forms a stable, sealed space, isolating the microphone from external noise interference and preventing speech recognition errors caused by external noise intrusion. This results in purer voice signal acquisition and ensures clear and accurate sound during voice communication. Compared with traditional rigid structural cover airtight methods, this structural design reduces airtightness issues caused by assembly or component dimensional errors, effectively reducing quality risks and improving the stability and reliability of speech recognition.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A microphone airtight structure, characterized in that, The aforementioned microphone airtight structure includes: A housing assembly (1) having a receiving cavity (101); Circuit board (2), said circuit board (2) is disposed on said housing assembly (1) and located in said receiving cavity (101); A microphone device (3) is disposed on the circuit board (2); A protective hard shell (4) is disposed on the housing assembly (1) and located in the receiving cavity (101), and the protective hard shell (4) is provided with a protective cavity (401); A protective soft sleeve (5) is disposed on and around the microphone device (3), the protective soft sleeve (5) is located in the protective cavity (401), and the protective hard shell (4) is disposed around the protective soft sleeve (5); A connector (6) is sandwiched between the protective sleeve (5) and the circuit board (2).

2. The microphone airtight structure according to claim 1, characterized in that, The protective soft sleeve (5) is provided with a mounting cavity (501) and a transmission channel (502). The microphone device (3) is located in the mounting cavity (501). The housing assembly (1) is provided with an input hole (102). The input hole (102), the transmission channel (502) and the mounting cavity (501) are connected in sequence.

3. The microphone airtight structure according to claim 2, characterized in that, The protective sleeve (5) includes a sleeve body (51) and a protrusion (52). The sleeve body (51) is disposed on the microphone device (3). The connector (6) is sandwiched between the sleeve body (51) and the circuit board (2). The protrusion (52) is disposed on the sleeve body (51). The housing assembly (1) abuts against the protrusion (52). The sleeve body (51) is located in the protective cavity (401). The sleeve body (51) has a mounting cavity (501). The transmission channel (502) passes through the sleeve body (51) and the protrusion (52).

4. The microphone airtight structure according to claim 3, characterized in that, The soft sleeve body (51) includes a connecting surface (511) and a sealing surface (512). The sealing surface (512) abuts against the microphone device (3). The connecting surface (511) is disposed on the connector (6). The transmission channel (502) passes through the sealing surface (512). The mounting cavity (501) passes through the connecting surface (511).

5. The microphone airtight structure according to claim 4, characterized in that, The horizontal height of the sealing surface (512) is greater than the horizontal height of the connecting surface (511); And / or the connecting surface (511) wraps the sealing surface (512) in the projection area of ​​the soft sleeve body (51).

6. The microphone airtight structure according to claim 3, characterized in that, The soft sleeve body (51) and the protrusion (52) are integrally formed; And / or the housing assembly (1) and the protective hard shell (4) are integrally formed; And / or the cross-sectional shape of the protrusion (52) is circular; Or the cross-sectional shape of the protrusion (52) is square.

7. The microphone airtight structure according to claim 1, characterized in that, There is a gap between the inner wall of the protective hard shell (4) and the outer wall of the protective soft sleeve (5).

8. The microphone airtight structure according to claim 1, characterized in that, The housing assembly (1) includes a lower housing (11) and an upper housing (12). The upper housing (12) is disposed on the lower housing (11) and abuts against the protective soft sleeve (5). The circuit board (2) is disposed on the lower housing (11). The upper housing (12) and the lower housing (11) together form the receiving cavity (101).

9. The microphone airtight structure according to claim 8, characterized in that, The lower housing (11) includes a main housing (111) and support columns (112). There are multiple support columns (112), and the multiple support columns (112) are disposed on the main housing (111). The upper housing (12) is disposed on the main housing (111), and the circuit board (2) is disposed on the multiple support columns (112).

10. A smart device, characterized in that, The smart devices include: The microphone airtight structure according to any one of claims 1 to 9; The smart device body, wherein the microphone airtight structure is disposed on the smart device body.

Images