A dustproof device, a device host and a smart home device

Abstract

The utility model discloses a dustproof device, equipment host computer and smart home equipment relates to dustproof technical field, the utility model discloses can be sealed to the area of the first side wall on installing terminal through the sealing gasket, and the first cavity and the second cavity are sealed in cooperation with the sealing gasket, the extension rib subassembly and the upper cover plate, thereby forming at least two closed cavities between the upper cover plate and the sealing gasket, can reduce the possibility that the air in the external environment of lower casing carries dust and flows into the accommodating cavity, thereby improve the operation stability of host board.

Description

Technical Field

[0001] This utility model relates to the field of dust prevention technology, and in particular to a dust prevention device, a main unit of the device, and a smart home device. Background Technology

[0002] Currently, with the development of smart home technology, smart home devices such as smart speakers, smart TVs, and smart air conditioners are commonly integrated into different locations within the home environment. Since smart home devices typically need to operate for extended periods and generally have internal ventilation or heat dissipation structures, these structures create airflow pathways connecting the inside and outside of the device.

[0003] However, the airflow path design causes dust in the environment to be carried by the airflow and eventually deposit inside home appliances. The main control board in home appliances is usually installed directly inside the appliance or enclosed by a simple casing. This can lead to dust entering the appliance being carried by the airflow and depositing on the surface of the main control board, thus affecting its operational stability. Utility Model Content

[0004] This invention addresses the problem that dust from the external environment can enter the interior of home appliances through airflow and accumulate on the surface of the main control board, affecting its operational stability. The invention provides a dustproof device, main unit, and smart home appliance that overcomes or at least partially solves the aforementioned problems.

[0005] Based on a first aspect of the present invention, a dustproof device is provided, the dustproof device comprising: The lower housing has a receiving cavity and a terminal mounting hole. The receiving cavity communicates with the terminal mounting hole, and the terminal mounting hole penetrates the first side wall of the lower housing. The terminal mounting hole is used for the terminals of the main control board to pass through. A sealing gasket is located within the accommodating cavity and is sealed to the first side wall, wherein the sealing gasket is used to limit the movement of the main control board; An upper cover plate, which cooperates with the lower housing to close the accommodating cavity; An extension rib assembly is located on the end face of the upper cover plate near the lower housing and is disposed near the first sidewall. The extension rib assembly is shaped to fit the upper cover plate to form at least a first cavity and a second cavity. The sealing gasket, the extension rib assembly, and the upper cover plate cooperate to seal the first cavity and the second cavity.

[0006] In one optional utility model, the distance between the first cavity and the first sidewall is less than the distance between the second cavity and the first sidewall; wherein, The sealing gasket abuts against the extended rib assembly to seal the first cavity, and the sealing gasket extends into the second cavity and abuts against the upper cover plate to seal the second cavity.

[0007] An optional utility model includes an extension rib assembly integrally formed with the upper cover plate. The extension rib assembly includes a first extension rib, a second extension rib, and a third extension rib. The first extension rib, the second extension rib, and the upper cover plate surround and form the first cavity. The first extension rib contacts the first sidewall. The second extension rib, the third extension rib, and the upper cover plate surround to form the second cavity, and the first extension rib and the second extension rib respectively abut against the sealing gasket.

[0008] In one optional utility model, the third extending rib abuts against the sealing gasket.

[0009] An optional utility model embodiment, wherein the extension rib assembly is integrally formed with the upper cover plate, the extension rib assembly and the upper cover plate are shaped to fit together, and a third cavity is also formed; The extension rib assembly includes a first extension rib, a second extension rib, a third extension rib, and a fourth extension rib. The first extension rib, the second extension rib, and the upper cover plate surround and form the first cavity, wherein the first extension rib contacts the first sidewall. The second extending rib, the third extending rib, and the upper cover plate surround to form the second cavity, and the third extending rib, the fourth extending rib, and the upper cover plate surround to form the third cavity. The first extending rib, the second extending rib, and the third extending rib abut against the sealing gasket, respectively.

[0010] In one optional utility model, the inner surface of the first sidewall is inclined, and the sealing gasket has an abutment surface for contacting the first sidewall. The abutment surface is inclined, and when the sealing gasket is pressed down, the sealing gasket abuts against the first sidewall.

[0011] In one optional utility model, the sealing gasket has an assembly groove for assembling the main control board, wherein the thickness of the sealing gasket located between the assembly groove and the lower housing is less than the thickness of the sealing gasket located between the assembly groove and the upper cover plate, so that when the main control board is assembled with the lower housing, the sealing gasket deforms upon contact.

[0012] In one optional utility model, a first assembly step is provided around the top wall of the lower housing near the upper cover plate, and a second assembly step is provided around the perimeter of the upper cover plate. The first assembly step and the second assembly step are shaped to fit together to define the assembly position of the lower housing and the upper cover plate.

[0013] In one optional utility model, the side wall of the lower housing is provided with a snap-fit ​​groove, and the upper cover is provided with a snap-fit ​​member. The snap-fit ​​member is shaped to match the snap-fit ​​groove so that the lower housing and the upper cover are snap-fitted and fixed.

[0014] Based on a second aspect of this utility model, a device host is also provided, the device host comprising: Dustproof device as described in any of the above utility model contents; The main control board is located within the accommodating cavity and is connected to the lower housing.

[0015] In one optional utility model, the lower housing is further provided with at least two positioning ribs, the main control board is located on the positioning ribs and is threadedly connected to the lower housing.

[0016] Based on a third aspect of this utility model, a smart home device is also provided, the smart home device including a device host as described in any of the above utility model contents.

[0017] Compared with the prior art, this utility model includes a lower housing, a sealing gasket, an upper cover plate, and an extension rib assembly. The lower housing has a receiving cavity and a terminal mounting hole. The receiving cavity communicates with the terminal mounting hole, which penetrates a first sidewall of the lower housing and is used for the through-hole of a terminal of the main control board. The sealing gasket is located in the receiving cavity and is sealed to the first sidewall, wherein the sealing gasket is used for limiting the main control board. The upper cover plate cooperates with the lower housing to close the receiving cavity. The extension rib assembly is located on the end face of the upper cover plate near the lower housing and is disposed near the first sidewall. The extension rib assembly and the upper cover plate are shaped to form at least a first cavity and a second cavity. The sealing gasket, the extension rib assembly, and the upper cover plate cooperate to seal the first cavity and the second cavity. The sealing gasket can seal the area where the terminals are installed on the first sidewall. The sealing gasket, the extended rib assembly, and the upper cover plate work together to seal the first cavity and the second cavity, thereby forming at least two sealed cavities between the upper cover plate and the sealing gasket. This reduces the possibility of dust being carried by air from the external environment of the lower housing into the accommodating cavity, thereby improving the operational stability of the main control board.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0020] In the attached diagram: Figure 1 This is a cross-sectional structural schematic diagram of a dustproof device provided in an embodiment of this application; Figure 2 This is an exploded structural diagram of a dustproof device provided in an embodiment of this application; Figure 3 This is a bottom view structural diagram of an upper cover plate provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an extension rib assembly provided in an embodiment of this application; Figure 5 This is a schematic diagram of another extended rib assembly provided in an embodiment of this application; Figure 6 This is a schematic diagram of the assembly structure of a sealing gasket and a main control board provided in an embodiment of this application; Figure 7 This is a three-dimensional structural diagram of a top cover provided in an embodiment of this application; Figure 8 This is a top view of a lower shell structure provided in an embodiment of this application; Figure label: 100. Lower housing; 101. Accommodating cavity; 102. Terminal mounting hole; 103. Snap-fit ​​groove; 110. First sidewall; 120. First assembly step; 130. Positioning rib; 200. Sealing gasket; 201. Assembly groove; 210. Abutment surface; 300. Upper cover plate; 310. Second assembly step; 320. Snap-fit ​​component; 321. Deformation body; 322. Lug; 400. Extension rib assembly; 401. First cavity; 402. Second cavity; 403. Third cavity; 410. First extension rib; 420. Second extension rib; 430. Third extension rib; 440. Fourth extension rib; 500. Main control board. Detailed Implementation

[0021] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0022] Currently, with the development of smart home technology, smart home devices such as smart speakers, smart TVs, and smart air conditioners are commonly integrated into different locations within the home environment. Since smart home devices typically need to operate for extended periods and generally have internal ventilation or heat dissipation structures, these structures create airflow pathways connecting the inside and outside of the device.

[0023] However, the airflow path design causes dust in the environment to be carried by the airflow and eventually deposit inside home appliances. The main control board in home appliances is usually installed directly inside the appliance or enclosed by a simple casing. This can lead to dust entering the appliance being carried by the airflow and depositing on the surface of the main control board, thus affecting its operational stability.

[0024] Based on the aforementioned technical problems, this application proposes an embodiment that may include a lower housing, a sealing gasket, an upper cover plate, and an extension rib assembly. The lower housing has a receiving cavity and a terminal mounting hole. The receiving cavity communicates with the terminal mounting hole, which penetrates a first sidewall of the lower housing and is used for the through-hole of a terminal of the main control board. The sealing gasket is located within the receiving cavity and is sealed to the first sidewall, wherein the sealing gasket is used for limiting the main control board. The upper cover plate cooperates with the lower housing to close the receiving cavity. The extension rib assembly is located on the end face of the upper cover plate near the lower housing and is disposed near the first sidewall. The extension rib assembly and the upper cover plate are shape-fitted to form at least a first cavity and a second cavity. The sealing gasket, the extension rib assembly, and the upper cover plate cooperate to seal the first cavity and the second cavity. The sealing gasket can seal the area where the terminals are installed on the first sidewall. The sealing gasket, the extended rib assembly, and the upper cover plate work together to seal the first cavity and the second cavity, thereby forming at least two sealed cavities between the upper cover plate and the sealing gasket. This reduces the possibility of dust being carried by air from the external environment of the lower housing into the accommodating cavity, thereby improving the operational stability of the main control board.

[0025] Reference Figures 1-8This application provides a dustproof device, which may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400. The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102, and the terminal mounting hole 102 penetrates through a first sidewall 110 of the lower housing 100, allowing terminals of a main control board 500 to pass through. The sealing gasket 200 is located within the receiving cavity 101 and is sealed to the first sidewall 110, wherein the sealing gasket 200 is used for limiting the main control board 500. The upper cover plate 300 cooperates with the lower housing 100 to close the receiving cavity 101. The extension rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extension rib assembly 400 is shaped to fit the upper cover plate 300 to form at least a first cavity 401 and a second cavity 402. The sealing gasket 200, the extension rib assembly 400 and the upper cover plate 300 cooperate to seal the first cavity 401 and the second cavity 402.

[0026] In this embodiment of the application, the dustproof device may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400.

[0027] The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102. The sealing gasket 200, the extension rib assembly 400, and the main control board 500 of the device host are respectively located within the receiving cavity 101. The terminals of the main control board 500 pass through the terminal mounting hole 102 to make electrical connections with electronic devices located outside the lower housing 100. The receiving cavity 101 communicates with the terminal mounting hole 102 and extends through the first sidewall 110 of the lower housing 100. The first sidewall 110 may be the side of the lower housing 100 most susceptible to airflow entering the receiving cavity 101 due to the airflow path within the device.

[0028] The sealing gasket 200 is located within the accommodating cavity 101 and is sealed to the first side wall 110, thereby sealing the connection gap between the terminals of the main control board 500 and the terminal mounting holes 102. This prevents dust from the outside of the lower housing 100 from entering the accommodating cavity 101. The sealing gasket 200 is positioned and engaged with the main control board 500, thus the structural strength of the main control board 500 provides rigid structural support for the sealing gasket 200.

[0029] The upper cover plate 300 covers the lower housing 100 and is shaped to fit the lower housing 100, thereby sealing the accommodating cavity 101. This provides dust protection for the main control board 500 located within the accommodating cavity 101.

[0030] The extended rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extended rib assembly 400 can be understood as a rib extending from the upper cover plate 300 toward the lower housing 100, and it can fit the shape of the upper cover plate 300 to form a first cavity 401 and a second cavity 402 opening toward the lower housing 100. The first cavity 401 and the second cavity 402 are sealed by the sealing gasket 200, the extended rib assembly 400, and the upper cover plate 300. Thus, at least two sealed cavities are formed at the connection gap between the lower housing 100 and the upper cover plate 300 near the first sidewall 110. This reduces the amount of dust carried by air from the external environment flowing into the accommodating cavity 101. For example, even if dust enters the accommodating cavity 101 from the connection gap between the lower housing 100 and the upper cover 300, it will accumulate in one of the cavities, the first cavity 401 and the second cavity 402.

[0031] In one example, if the first cavity 401 is close to the first sidewall 110, the incoming dust will accumulate in the first cavity 401 beforehand. If the second cavity 402 is close to the first sidewall 110, the incoming dust will accumulate in the second cavity 402 beforehand. If the dust is to accumulate on the surface of the main control board 500, it needs to pass through the second cavity with the airflow, thereby preventing dust from contacting the main control board 500 and improving the operational stability of the main control board 500.

[0032] In summary, this application discloses a dustproof device, which may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400. The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102, and the terminal mounting hole 102 penetrates through a first sidewall 110 of the lower housing 100. The terminal mounting hole 102 is used for the terminals of the main control board 500 to pass through. For example, depending on the type of terminals of the main control board 500, the number of terminal mounting holes 102 can be multiple, and they can be adapted to the shape of the terminals. The sealing gasket 200 is located inside the receiving cavity 101 and is sealed to the first sidewall 110. The sealing gasket 200 is used for limiting the main control board 500. The upper cover plate 300 cooperates with the lower housing 100 to close the receiving cavity 101. The extension rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extension rib assembly 400 is shaped to fit the upper cover plate 300, forming at least a first cavity 401 and a second cavity 402. The sealing gasket 200, the extension rib assembly 400, and the upper cover plate 300 cooperate to seal the first cavity 401 and the second cavity 402. Thus, the sealing gasket 200 can seal the area on the first sidewall 110 where terminals are mounted. The combined sealing of the sealing gasket 200, the extension rib assembly 400, and the upper cover plate 300 seals the first cavity 401 and the second cavity 402, thereby forming at least two sealed cavities between the upper cover plate 300 and the sealing gasket 200. This reduces the possibility of dust carried by air from the external environment flowing into the accommodating cavity 101, thereby improving the operational stability of the main control board 500.

[0033] In one or more embodiments, refer to Figure 4 As shown, the distance between the first cavity 401 and the first sidewall 110 is less than the distance between the second cavity 402 and the first sidewall 110. The sealing gasket 200 abuts against the extended rib assembly 400 to seal the first cavity 401, and the sealing gasket 200 extends into the second cavity 402, abutting against the upper cover plate 300 to seal the second cavity 402.

[0034] In this embodiment, the distance between the first cavity 401 and the first sidewall 110 is less than the distance between the second cavity 402 and the first sidewall 110. This can be understood as the first cavity 401 being closer to the first sidewall 110 (i.e., closer to the connection gap between the upper cover plate 300 and the lower housing 100) than the second cavity 402. External airflow then flows in through this connection gap, first into the first cavity 401, and then into the second cavity 402. The sealing gasket 200 and the extension rib assembly 400 abut against and seal the first cavity 401. In other words, the extension rib assembly 400 compresses the sealing gasket 200, forming a seal in the first cavity 401 and improving its airtightness. Therefore, when external airflow flows into the first cavity 401, the sealing effect between the extension rib assembly 400 and the sealing gasket 200 greatly reduces the possibility of dust entering the first cavity 401 with the airflow.

[0035] The sealing gasket 200 extends into the second cavity 402 and abuts against the upper cover plate 300. By compressing the sealing gasket 200, the second cavity 402 is sealed, and the airtightness of the second cavity 402 is improved. When airflow flows from the first cavity 401 into the second cavity 402, the sealing connection between the extended rib assembly 400 and the sealing gasket 200, and the sealing connection between the sealing gasket 200 and the upper cover plate 300, will prevent dust from entering the second cavity 402 with the airflow.

[0036] Based on the above structural design, two sealed cavities are provided at the connection gap between the lower housing 100 and the upper cover plate 300 near the first side wall 110 to reduce the possibility of airflow carrying dust into the accommodating cavity 101. This improves the dustproof performance of the dustproof device and prevents dust from accumulating on the surface of the main control board 500 in the accommodating cavity 101. This improves the operational stability and service life of the main control board 500 of the device host.

[0037] In one or more embodiments, the extension rib assembly 400 is integrally formed with the upper cover plate 300. The extension rib assembly 400 may include a first extension rib 410, a second extension rib 420, and a third extension rib 430. The first extension rib 410, the second extension rib 420, and the upper cover plate 300 surround to form the first cavity 401, wherein the first extension rib 410 contacts the first sidewall 110. The second extension rib 420, the third extension rib 430, and the upper cover plate 300 surround to form the second cavity 402. The first extension rib 410 and the second extension rib 420 respectively abut against the sealing gasket 200.

[0038] In this embodiment of the application, the extension rib assembly 400 includes at least a first extension rib 410, a second extension rib 420, and a third extension rib 430.

[0039] In one example, the length directions of the first extending rib 410, the second extending rib 420, and the third extending rib 430 are parallel to the length direction of the first sidewall 110. For example, the extending rib assembly 400 can be integrally formed with the upper cover plate 300 (or the extending rib assembly 400 and the upper cover plate 300 can be referred to as an integral structure), which can be manufactured by injection molding.

[0040] The first extending rib 410, the second extending rib 420, and the upper cover plate 300 surround and form the first cavity 401, thereby allowing the first cavity 401 to have an opening facing the sealing gasket 200. The first extending rib 410 contacts the first sidewall 110. When the upper cover plate 300 closes the accommodating cavity 101, the provision of the first extending rib 410 increases the contact area between the upper cover plate 300 and the lower housing 100, and changes the airflow path at the connection gap. This allows air, under the action of airflow, to enter downwards from the connection gap between the upper cover plate 300 and the lower housing 100 into the connection gap between the first extending rib 410 and the lower housing 100, and through the abutment of the first extending rib 410 against the sealing gasket 200, achieves the first sealing of the accommodating cavity 101.

[0041] The contact between the first extending rib 410 and the sealing gasket 200, and the contact between the second extending rib 420 and the sealing gasket 200, seals the first cavity 401, thereby improving its airtightness. When external airflow flows into the first cavity 401, the contact between the second extending rib 420 and the sealing gasket 200 creates a second seal in the receiving cavity 101, significantly reducing the possibility of dust entering the receiving cavity 101 from the first cavity 401 with the airflow.

[0042] The second extending rib 420, the third extending rib 430, and the upper cover plate 300 surround and form the second cavity 402, such that the second cavity 402 has an opening facing the sealing gasket 200. The sealing gasket 200 extends into the second cavity 402, that is, into the region between the second extending rib 420 and the third extending portion, and abuts against the upper cover plate 300 through the sealing gasket 200, sealing the second cavity 402 located between the second extending rib 420 and the sealing gasket 200, and achieving a third seal for the accommodating cavity 101.

[0043] Based on the above structural design, through the structural cooperation of the first extending rib 410, the second extending rib 420, the upper cover plate 300, and the lower housing 100, at least two sealed cavities are provided at the connection gap between the lower housing 100 and the upper cover plate 300 near the first side wall 110 to reduce the possibility of airflow carrying dust into the accommodating cavity 101. This improves the dustproof performance of the dustproof device and prevents dust from accumulating on the surface of the main control board 500 in the accommodating cavity 101. This improves the operational stability and service life of the main control board 500 of the device host.

[0044] In one or more embodiments, the third extension rib 430 and the sealing gasket 200 abut against each other, thereby sealing the second cavity 402 located between the sealing gasket 200 and the third extension rib 430, and achieving a fourth seal of the accommodating cavity 101.

[0045] Based on the above structural design, through the structural cooperation of the first extending rib 410, the second extending rib 420, the third extending rib 430, the upper cover plate 300, and the lower housing 100, two sealed cavities are provided at the connection gap between the lower housing 100 and the upper cover plate 300 near the first side wall 110 to reduce the possibility of airflow carrying dust into the accommodating cavity 101. This improves the dustproof performance of the dustproof device and prevents dust from accumulating on the surface of the main control board 500 in the accommodating cavity 101. This improves the operational stability and service life of the main control board 500 of the device host.

[0046] In one or more embodiments, refer to Figure 5 As shown, the extension rib assembly 400 is integrally formed with the upper cover plate 300. The extension rib assembly 400 and the upper cover plate 300 are shaped to fit together, and a third cavity 403 is also formed. The extension rib assembly 400 includes a first extension rib 410, a second extension rib 420, a third extension rib 430, and a fourth extension rib 440. The first extension rib 410, the second extension rib 420, and the upper cover plate 300 surround to form the first cavity 401, wherein the first extension rib 410 contacts the first sidewall 110. The second extension rib 420, the third extension rib 430, and the upper cover plate 300 surround to form the second cavity 402. The third extension rib 430, the fourth extension rib 440, and the upper cover plate 300 surround to form the third cavity 403. The first extension rib 410, the second extension rib 420, and the third extension rib 430 abut against the sealing gasket 200.

[0047] In this embodiment of the application, the extension rib assembly 400 is shaped to fit the upper cover plate 300 and also forms a third cavity 403. The extension rib assembly 400 includes at least a first extension rib 410, a second extension rib 420, a third extension rib 430 and a fourth extension rib 440.

[0048] In one example, the length directions of the first extending rib 410, the second extending rib 420, the third extending rib 430, and the fourth extending rib 440 are parallel to the length direction of the first sidewall 110. For example, the extending rib assembly 400 can be integrally formed with the upper cover plate 300 (or the extending rib assembly 400 and the upper cover plate 300 can be referred to as an integral structure), and it can be manufactured by injection molding.

[0049] The first extending rib 410, the second extending rib 420, and the upper cover plate 300 surround and form the first cavity 401, such that the first cavity 401 has an opening facing the sealing gasket 200. The first extending rib 410 contacts the first sidewall 110. When the upper cover plate 300 closes the accommodating cavity 101, the provision of the first extending rib 410 increases the contact area between the upper cover plate 300 and the lower housing 100, and changes the airflow path at the connection gap. This allows air, under the action of airflow, to enter downwards from the connection gap between the upper cover plate 300 and the lower housing 100 into the connection gap between the first extending rib 410 and the lower housing 100, and through the abutment of the first extending rib 410 against the sealing gasket 200, achieves the first sealing of the accommodating cavity 101.

[0050] The contact between the first extending rib 410 and the sealing gasket 200, and the contact between the second extending rib 420 and the sealing gasket 200, seals the first cavity 401, thereby improving its airtightness. When external airflow flows into the first cavity 401, the contact between the second extending rib 420 and the sealing gasket 200 creates a second seal in the receiving cavity 101, significantly reducing the possibility of dust entering the receiving cavity 101 from the first cavity 401 with the airflow.

[0051] In one example, the second extending rib 420, the third extending rib 430, and the upper cover plate 300 surround to form the second cavity 402, such that the second cavity 402 has an opening toward the sealing gasket 200. The sealing gasket 200 extends into the second cavity 402, that is, into the region between the second extending rib 420 and the third extending portion, and abuts against the upper cover plate 300 through the sealing gasket 200, sealing the second cavity 402 located between the second extending rib 420 and the sealing gasket 200, and achieving a third seal for the accommodating cavity 101.

[0052] The third extending rib 430, the fourth extending rib 440, and the upper cover plate 300 surround and form the third cavity 403, so that the third cavity 403 has an opening facing the sealing gasket 200. The third extending rib 430 and the fourth extending rib 440 respectively abut against the sealing gasket 200 to achieve a seal of the third cavity 403.

[0053] In another example, the second extending rib 420, the third extending rib 430, and the upper cover plate 300 surround to form the second cavity 402, such that the second cavity 402 has an opening facing the sealing gasket 200. The contact between the second extending rib 420 and the sealing gasket 200, and the contact between the third extending rib 430 and the sealing gasket 200, achieves a seal between the two cavities and improves the airtightness of the second cavity 402. When the airflow in the first cavity 401 flows to the second cavity 402, the contact between the third extending rib 430 and the sealing gasket 200 achieves a third seal for the receiving cavity.

[0054] The third extending rib 430, the fourth extending rib 440, and the upper cover plate 300 surround and form the third cavity 403, such that the third cavity 403 has an opening facing the sealing gasket 200. The sealing gasket 200 extends into the third cavity 403, that is, into the region between the third extending rib 430 and the fourth extending portion, and abuts against the upper cover plate 300 through the sealing gasket 200, sealing the third cavity 403 located between the third extending rib 430 and the sealing gasket 200. The fourth extending rib 440 can also abut against the sealing gasket 200, sealing the third cavity 403 located between the fourth extending rib 440 and the sealing gasket 200.

[0055] Based on the above structural design, through the structural cooperation of the first extending rib 410, the second extending rib 420, the third extending rib 430, the fourth extending rib 440, the upper cover plate 300, and the lower housing 100, three sealed cavities are provided at the connection gap between the lower housing 100 and the upper cover plate 300 near the first side wall 110 to reduce the possibility of airflow carrying dust into the accommodating cavity 101. This improves the dustproof performance of the dustproof device and prevents dust from accumulating on the surface of the main control board 500 in the accommodating cavity 101. This improves the operational stability and service life of the main control board 500 of the device host.

[0056] In one or more embodiments, refer to Figure 1 and Figure 4 As shown, the inner surface of the first sidewall 110 is inclined, and the sealing gasket 200 has an abutment surface 210 for contacting the first sidewall 110. The abutment surface 210 is inclined, and when the sealing gasket 200 is pressed down, the sealing gasket 200 abuts against the first sidewall 110.

[0057] In this embodiment, the inner surface of the first sidewall 110 is inclined, with an angle α1 to the horizontal direction. For example, the lower housing 100 can be an injection molded part, and the inclined inner surface of the first sidewall 110 facilitates the demolding of the lower housing 100.

[0058] The sealing gasket 200 has an abutment surface 210 for contacting the first sidewall 110. The abutment surface 210 is inclined, forming an angle α2 with the horizontal direction. The inclination angle of the abutment surface 210 corresponds to the inclination angle of the inner surface of the first sidewall 110, and the sum of the included angles α1 and α2 is 180 degrees. For example, α1 is 89 degrees and α2 is 91 degrees. This ensures that the inner surface of the first sidewall 110 maintains surface contact with the abutment surface 210.

[0059] During the assembly of the main control board 500 and the lower housing 100, the sealing gasket 200 is simultaneously pressed down under the limiting action of the main control board 500. This causes the sealing gasket 200 to abut against the first sidewall 110, deforming it and improving the sealing performance between the sealing gasket 200 and the first sidewall 110. This reduces the possibility of dust entering the accommodating cavity 101 through the connection gap between the sealing gasket 200 and the terminal mounting hole 102 on the first sidewall, carried by airflow.

[0060] Based on the above structural design, demolding is facilitated when the lower housing 100 is manufactured using injection molding. Through an inclined fit, when the main control board 500 is vertically assembled to the lower housing 100, the contact (or pressure contact) between the sealing gasket 200 and the first sidewall 110 is ensured, improving the sealing performance between the sealing gasket 200 and the first sidewall 110 and avoiding poor sealing performance caused by assembly errors between the sealing gasket 200 and the first sidewall 110. This significantly improves the dustproof effect of the dustproof device.

[0061] In one or more embodiments, refer to Figure 1 and Figure 6 As shown, the sealing gasket 200 has an assembly groove 201 for assembling the main control board 500. The thickness of the sealing gasket 200 located between the assembly groove 201 and the lower housing 100 is less than the thickness of the sealing gasket 200 located between the assembly groove 201 and the upper cover plate 300, so that when the main control board 500 is assembled with the lower housing 100, the sealing gasket 200 is deformed by pressure.

[0062] In this embodiment of the application, the sealing gasket 200 has an assembly groove 201 for assembling the main control board 500. The assembly groove 201 may include a circuit board groove and a terminal groove. Thus, the assembly accuracy of the sealing gasket 200 on the main control board 500 can be improved by matching the shape of the assembly groove 201 with that of the main control board 500.

[0063] The thickness H1 of the sealing gasket 200 located between the assembly groove 201 and the lower housing 100 is less than the thickness H2 of the sealing gasket 200 located between the assembly groove 201 and the upper cover plate 300. That is, when the main control board 500 and the lower housing 100 are vertically assembled, the sealing gasket 200 located between the assembly groove 201 and the lower housing 100 is thinner, making it easier to deform and come into contact with the first side wall 110 under downward pressure, thereby further improving the sealing performance between the sealing gasket 200 and the first side wall 110.

[0064] In one or more embodiments, the thickness of the sealing gasket 200 located between the assembly groove 201 and the lower housing 100 may be less than half the thickness of the sealing gasket 200 located between the assembly groove 201 and the upper cover plate 300. The sealing gasket 200 may be made of soft materials such as silicone or rubber. Those skilled in the art can determine the material of the sealing gasket 200 according to actual design requirements, and no further limitations are imposed here.

[0065] Based on the above structural design, when the main control board 500 and the lower housing 100 are vertically assembled, the sealing gasket 200 located between the assembly groove 201 and the lower housing 100 is thinner, making it easier to deform and abut against the first side wall 110 under downward pressure, thereby further improving the connection sealing between the sealing gasket 200 and the first side wall 110.

[0066] In one or more embodiments, refer to Figure 1 , Figure 4 as well as Figure 5 As shown, the lower housing 100 is provided with a first assembly step 120 around the top wall near the upper cover plate 300, and the upper cover plate 300 is provided with a second assembly step 310 around its perimeter. The first assembly step 120 and the second assembly step 310 are shaped to fit together to define the assembly position of the lower housing 100 and the upper cover plate 300.

[0067] In this embodiment, the lower housing 100 is provided with a first assembly step 120 around its perimeter near the top wall of the upper cover plate 300, and the upper cover plate 300 is provided with a second assembly step 310 around its perimeter. The first assembly step 120 and the second assembly step 310 are shaped to fit each other, which improves the positioning accuracy of the assembly position between the lower housing 100 and the upper cover plate 300. Furthermore, due to the shape fit between the first assembly step 120 and the second assembly step 310, dust in the air, after entering the connection gap between the lower housing 100 and the upper cover plate 300 with the airflow, needs to bend and flow according to the step shape. This facilitates the accumulation of dust in the gap between the first assembly step 120 and the second assembly step 310, reducing the possibility of dust entering the first cavity 401 with the airflow, thereby further improving the dustproof effect of the dustproof device.

[0068] In one or more embodiments, refer to Figure 2 and Figure 7 As shown, the lower housing 100 has a snap-fit ​​groove 103 on its side wall, and the upper cover plate 300 is provided with a snap-fit ​​member 320. The snap-fit ​​member 320 is shaped to fit the snap-fit ​​groove 103 so that the lower housing 100 and the upper cover plate 300 are snapped and fixed.

[0069] In this embodiment, a snap-fit ​​groove 103 is provided on the side wall of the lower housing 100, and a snap-fit ​​member 320 is provided on the upper cover plate 300 corresponding to the assembly area of ​​the snap-fit ​​groove 103. For example, the snap-fit ​​member 320 may include a deformable body 321 and a lug 322 disposed at an angle to the deformable body 321. The upper cover plate 300, the deformable body 321, and the lug 322 may be an integral structure. Thus, during the assembly process of the upper cover plate 300 and the lower housing 100, the lug 322 abuts against the side wall of the lower housing 100, causing the deformable body 321 to deform in a direction away from the side wall of the lower housing 100. When the lug 322 is displaced to the snap-fit ​​groove 103, the abutment force on the lug 322 disappears, the deformable body 321 recovers its deformation, and the lug 322 is confined in the snap-fit ​​groove 103. Thus, the lower housing 100 and the upper cover 300 can be fixed by the snap-fit ​​of the snap-fit ​​member 320 with the snap-fit ​​groove 103.

[0070] Based on the above structural design, the ease of assembly between the upper cover plate 300 and the lower housing 100 can be improved.

[0071] Reference Figure 1 As shown in the illustration, this application also discloses a device host, which may include a dustproof device and a main control board 500. The dustproof device may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400. The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102, and the terminal mounting hole 102 penetrates through a first side wall 110 of the lower housing 100, allowing terminals of the main control board 500 to pass through. The sealing gasket 200 is located within the receiving cavity 101 and is sealed to the first side wall 110, wherein the sealing gasket 200 is used for limiting cooperation with the main control board 500. The upper cover plate 300 cooperates with the lower housing 100 to close the receiving cavity 101. The extension rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extension rib assembly 400 is shaped to fit the upper cover plate 300, forming at least a first cavity 401 and a second cavity 402. The sealing gasket 200, the extension rib assembly 400, and the upper cover plate 300 cooperate to seal the first cavity 401 and the second cavity 402. The main control board 500 is located within the accommodating cavity 101 and is connected to the lower housing 100.

[0072] In this embodiment of the application, the dustproof device may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400.

[0073] The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102. The sealing gasket 200, the extension rib assembly 400, and the main control board 500 of the device host are respectively located within the receiving cavity 101. The terminals of the main control board 500 pass through the terminal mounting hole 102 to make electrical connections with electronic devices located outside the lower housing 100. The receiving cavity 101 communicates with the terminal mounting hole 102 and extends through the first sidewall 110 of the lower housing 100. The first sidewall 110 may be the side of the lower housing 100 most susceptible to airflow entering the receiving cavity 101 due to the airflow path within the device.

[0074] The sealing gasket 200 is located within the accommodating cavity 101 and is sealed to the first side wall 110, thereby sealing the connection gap between the terminals of the main control board 500 and the terminal mounting holes 102. This prevents dust from the outside of the lower housing 100 from entering the accommodating cavity 101. The sealing gasket 200 is positioned and engaged with the main control board 500, thus the structural strength of the main control board 500 provides rigid structural support for the sealing gasket 200.

[0075] The upper cover plate 300 covers the lower housing 100 and is shaped to fit the lower housing 100, thereby sealing the accommodating cavity 101. This provides dust protection for the main control board 500 located within the accommodating cavity 101.

[0076] The extended rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extended rib assembly 400 can be understood as a rib extending from the upper cover plate 300 toward the lower housing 100, and it can fit the shape of the upper cover plate 300 to form a first cavity 401 and a second cavity 402 opening toward the lower housing 100. The first cavity 401 and the second cavity 402 are sealed by the sealing gasket 200, the extended rib assembly 400, and the upper cover plate 300. Thus, at least two sealed cavities are formed at the connection gap between the lower housing 100 and the upper cover plate 300 near the first sidewall 110. This reduces the amount of dust carried by air from the external environment flowing into the accommodating cavity 101. For example, even if dust enters the accommodating cavity 101 from the connection gap between the lower housing 100 and the upper cover 300, it will accumulate in one of the cavities, the first cavity 401 and the second cavity 402.

[0077] In one example, if the first cavity 401 is close to the first sidewall 110, the incoming dust will accumulate in the first cavity 401 beforehand. If the second cavity 402 is close to the first sidewall 110, the incoming dust will accumulate in the second cavity 402 beforehand. If the dust is to accumulate on the surface of the main control board 500, it needs to pass through the second cavity with the airflow, thereby preventing dust from contacting the main control board 500 and improving the operational stability of the main control board 500.

[0078] In one or more embodiments, refer to Figure 1 and Figure 8 As shown, the lower housing 100 is also provided with at least two positioning ribs 130, and the main control board 500 is located on the positioning ribs 130 and is threadedly connected to the lower housing 100.

[0079] In this embodiment, the positioning rib 130 and the lower housing 100 can be integrally formed, and at least two positioning ribs 130 can be spaced apart on the bottom wall of the lower housing 100, thereby achieving the positioning of the assembly height of the main control board 500. The main control board 500 can also have threaded holes, allowing it to be threadedly connected to the lower housing 100 using screws or other threaded connectors, thus improving the ease of assembly between the main control board 500 and the lower housing 100. Furthermore, the vertical assembly using threaded connectors provides pressure to the sealing gasket 200 located between the assembly groove 201 and the lower cover plate.

[0080] In summary, the embodiments of this application may include a device host, which may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400. The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102, and the terminal mounting hole 102 penetrates through a first sidewall 110 of the lower housing 100, allowing terminals of the main control board 500 to pass through. The sealing gasket 200 is located within the receiving cavity 101 and is sealed to the first sidewall 110, wherein the sealing gasket 200 is used for limiting cooperation with the main control board 500. The upper cover plate 300 cooperates with the lower housing 100 to close the receiving cavity 101. The extension rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extended rib assembly 400 is shaped to fit the upper cover plate 300, forming at least a first cavity 401 and a second cavity 402. The sealing gasket 200, the extended rib assembly 400, and the upper cover plate 300 cooperate to seal the first cavity 401 and the second cavity 402. Thus, the sealing gasket 200 can seal the area on the first sidewall 110 where terminals are mounted. The combined sealing of the sealing gasket 200, the extended rib assembly 400, and the upper cover plate 300 seals the first cavity 401 and the second cavity 402, thereby forming at least two sealed cavities between the upper cover plate 300 and the sealing gasket 200. This reduces the possibility of dust from the external environment flowing into the accommodating cavity 101, thereby improving the operational stability of the main control board 500.

[0081] This application also discloses a smart home device, which may include the device host as described in any of the above application embodiments.

[0082] In this embodiment of the application, the smart home device may include, but is not limited to, smart speakers, smart TVs, smart air conditioners, and smart curtains, and may encompass home devices with a device host.

[0083] In summary, the embodiments of this application may include a smart home device, which may include a lower housing 100, a sealing gasket 200, an upper cover plate 300, and an extension rib assembly 400. The lower housing 100 has a receiving cavity 101 and a terminal mounting hole 102. The receiving cavity 101 communicates with the terminal mounting hole 102, and the terminal mounting hole 102 penetrates through a first sidewall 110 of the lower housing 100, allowing terminals of a main control board 500 to pass through. The sealing gasket 200 is located within the receiving cavity 101 and is sealed to the first sidewall 110, wherein the sealing gasket 200 is used for limiting the main control board 500. The upper cover plate 300 cooperates with the lower housing 100 to close the receiving cavity 101. The extension rib assembly 400 is located on the end face of the upper cover plate 300 near the lower housing 100 and is disposed near the first sidewall 110. The extended rib assembly 400 is shaped to fit the upper cover plate 300, forming at least a first cavity 401 and a second cavity 402. The sealing gasket 200, the extended rib assembly 400, and the upper cover plate 300 cooperate to seal the first cavity 401 and the second cavity 402. Thus, the sealing gasket 200 can seal the area on the first sidewall 110 where terminals are mounted. The combined sealing of the sealing gasket 200, the extended rib assembly 400, and the upper cover plate 300 seals the first cavity 401 and the second cavity 402, thereby forming at least two sealed cavities between the upper cover plate 300 and the sealing gasket 200. This reduces the possibility of dust from the external environment flowing into the accommodating cavity 101, thereby improving the operational stability of the main control board 500.

[0084] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0085] It will be readily apparent to those skilled in the art that any combination of the above embodiments is feasible. Therefore, any combination of the above embodiments is an implementation scheme of this utility model. However, due to space limitations, this specification will not describe them in detail here.

[0086] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0087] Similarly, it should be understood that, in order to simplify the present invention and aid in understanding one or more of the various aspects of the invention, in the description of exemplary embodiments of the present invention above, various features of the present invention are sometimes grouped together in a single embodiment, figure, or description thereof.

[0088] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

Claims

1. A dustproof device, characterized in that, The dustproof device includes: The lower housing (100) has a receiving cavity (101) and a terminal mounting hole (102). The receiving cavity (101) communicates with the terminal mounting hole (102). The terminal mounting hole (102) penetrates the first side wall (110) of the lower housing (100). The terminal mounting hole (102) is used for the terminals of the main control board (500) to pass through. A sealing gasket (200) is located inside the accommodating cavity (101) and is sealed to the first side wall (110), wherein the sealing gasket (200) is used to limit the engagement with the main control board (500); The upper cover plate (300) cooperates with the lower housing (100) to close the accommodating cavity (101); An extension rib assembly (400) is located on the end face of the upper cover plate (300) near the lower housing (100) and is disposed near the first sidewall (110). The extension rib assembly (400) is shaped to fit the upper cover plate (300) to form at least a first cavity (401) and a second cavity (402). The sealing gasket (200), the extension rib assembly (400), and the upper cover plate (300) cooperate to seal the first cavity (401) and the second cavity (402).

2. The dustproof device according to claim 1, characterized in that, The distance between the first cavity (401) and the first sidewall (110) is less than the distance between the second cavity (402) and the first sidewall (110); wherein, The sealing gasket (200) abuts against the extension rib assembly (400) to seal the first cavity (401), and the sealing gasket (200) extends into the second cavity (402) and abuts against the upper cover plate (300) to seal the second cavity (402).

3. The dustproof device according to claim 1, characterized in that, The extension rib assembly (400) is integrally formed with the upper cover plate (300). The extension rib assembly (400) includes a first extension rib (410), a second extension rib (420), and a third extension rib (430). The first extension rib (410), the second extension rib (420), and the upper cover plate (300) surround and form the first cavity (401). The first extension rib (410) contacts the first sidewall (110). The second extension rib (420), the third extension rib (430), and the upper cover plate (300) surround to form the second cavity (402), and the first extension rib (410) and the second extension rib (420) respectively abut against the sealing gasket (200).

4. The dustproof device according to claim 3, characterized in that, The third extension rib (430) abuts against the sealing gasket (200).

5. The dustproof device according to claim 1, characterized in that, The extension rib assembly (400) is integrally formed with the upper cover plate (300), and the extension rib assembly (400) and the upper cover plate (300) are shaped to fit together, and a third cavity (403) is also formed. The extension rib assembly (400) includes a first extension rib (410), a second extension rib (420), a third extension rib (430), and a fourth extension rib (440). The first extension rib (410), the second extension rib (420), and the upper cover plate (300) surround and form the first cavity (401), wherein the first extension rib (410) contacts the first sidewall (110). The second extension rib (420), the third extension rib (430), and the upper cover plate (300) surround to form the second cavity (402), and the third extension rib (430), the fourth extension rib (440), and the upper cover plate (300) surround to form the third cavity (403). The first extension rib (410), the second extension rib (420), and the third extension rib (430) respectively abut against the sealing gasket (200).

6. The dustproof device according to claim 1, characterized in that, The inner surface of the first sidewall (110) is inclined, and the sealing gasket (200) has an abutment surface (210) for contacting the first sidewall (110). The abutment surface (210) is inclined, and when the sealing gasket (200) is pressed down, the sealing gasket (200) abuts against the first sidewall (110).

7. The dustproof device according to claim 6, characterized in that, The sealing gasket (200) has an assembly groove (201) for assembling the main control board (500). The thickness of the sealing gasket (200) located between the assembly groove (201) and the lower housing (100) is less than the thickness of the sealing gasket (200) located between the assembly groove (201) and the upper cover plate (300), so that when the main control board (500) is assembled with the lower housing (100), the sealing gasket (200) is deformed by pressing against it.

8. The dustproof device according to claim 1, characterized in that, The lower housing (100) is provided with a first assembly step (120) around the top wall near the upper cover plate (300), and the upper cover plate (300) is provided with a second assembly step (310) around its perimeter. The first assembly step (120) and the second assembly step (310) are shaped to fit together to define the assembly position of the lower housing (100) and the upper cover plate (300).

9. The dustproof device according to claim 1, characterized in that, The lower housing (100) has a snap-fit ​​groove (103) on its side wall, and the upper cover plate (300) has a snap-fit ​​member (320) that matches the shape of the snap-fit ​​groove (103) so that the lower housing (100) and the upper cover plate (300) are snapped and fixed.

10. A device host, characterized in that, The device host includes: The dustproof device as described in any one of claims 1-9; The main control board (500) is located inside the accommodating cavity (101) and is connected to the lower housing (100).

11. The device host according to claim 10, characterized in that, The lower housing (100) is also provided with at least two positioning ribs (130), and the main control board (500) is located on the positioning ribs (130) and is threadedly connected to the lower housing (100).

12. A smart home device, characterized in that, The smart home device includes the device host as described in any one of claims 10-11.

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