Switch assembly, turning plate assembly and range hood

Abstract

The switch assembly comprises a shell, a connecting frame and a circuit board assembly, the connecting frame is connected with the shell through a fastener, the connecting frame and the shell define a containing cavity with an opening in one end, the circuit board assembly is arranged in the containing cavity through the opening, and the side, away from the shell, of the connecting frame is provided with a bonding part. According to the switch assembly provided by the utility model, the connecting frame is connected with the shell through the fastener, the connecting frame and the shell are enclosed to form the accommodating cavity with the opening at one end, and the circuit board assembly is arranged in the accommodating cavity through the opening, so that on one hand, the shell is convenient to disassemble and assemble, the circuit board assembly is convenient to disassemble and replace, and the adaptability is improved; and on the other hand, the problem of oil inlet failure of the circuit board assembly caused by gaps is avoided, the sealing effect is ensured, and the circuit board assembly is effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to a switch assembly, a flap assembly, and a range hood. Background Technology

[0002] As people's living standards improve, their demands for a better kitchen cooking environment are also increasing. Range hoods have become an indispensable kitchen appliance in modern homes. A range hood works by using a motor to drive an impeller at high speed, creating a negative pressure zone near the smoke collection chamber, which draws cooking fumes into the machine and exhausts them outdoors.

[0003] Current range hoods are generally controlled by switches electrically connected to a circuit board. For example, users can control the operating status of the range hood via the switch. However, because the circuit board is exposed to cooking fumes for extended periods, it is prone to oil ingress and failure, resulting in a higher failure rate compared to other components of the range hood. A failed circuit board will affect the overall operation of the range hood. To avoid this problem, a protective oil-proof box with an elastic ring is usually placed over the circuit board to protect it from oil. However, the sealing effect is not ideal, and oil can still enter the protective box. Furthermore, existing protective oil-proof boxes are only compatible with one type of circuit board, resulting in low compatibility. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a switching assembly is provided, the technical solution of which is as follows.

[0005] The switch assembly includes a housing, a connecting frame, and a circuit board assembly. The connecting frame is connected to the housing by fasteners and encloses the housing to form a receiving cavity with one end open. The circuit board assembly is disposed in the receiving cavity through the opening, and the connecting frame has an adhesive portion on the side away from the housing.

[0006] The switch assembly of this utility model has a connecting frame connected to the housing by fasteners, which together form an open cavity. The circuit board assembly is placed in the cavity through the opening. On the one hand, this facilitates the disassembly and assembly of the housing, thereby facilitating the disassembly and replacement of the circuit board assembly and improving adaptability. On the other hand, it avoids the problem of oil ingress into the circuit board assembly due to gaps, ensuring a sealing effect and effectively protecting the circuit board assembly.

[0007] For example, the housing has a main body and a first enclosure extending from the main body, and the connecting frame has a frame body and a second enclosure extending from the frame body. The frame body is opposite to the main body, and the first enclosure and the second enclosure are fitted together to form a barrier. The main body and the barrier together form a receiving cavity. Thus, the fitted first enclosure and the second enclosure to form a barrier prevent oil from entering the receiving cavity through the gap between the first enclosure and the second enclosure, ensuring the sealing of the connection between the housing and the connecting frame, effectively protecting the circuit board assembly, and preventing oil ingress and failure of the circuit board assembly.

[0008] For example, the frame body has a groove formed on the side facing the shell body, and the first enclosure body extends at least partially into the groove. An elastic ring is provided in the groove. The elastic ring is compressed and deformed by the first enclosure body during the tightening of the fastener to form a sealing structure. In this way, the sealing of the connection between the shell and the connecting frame is effectively guaranteed, the circuit board assembly is effectively protected, the problem of oil ingress failure of the circuit board assembly is avoided, and the structure is simple.

[0009] For example, the groove has an inner wall and an outer wall, the second enclosure forms the outer wall, and the height of the outer wall is not less than the height of the inner wall in the direction perpendicular to the frame body. This further ensures the sealing of the connection between the housing and the connecting frame, effectively protecting the circuit board assembly and preventing oil ingress failure.

[0010] For example, a groove is formed on the side of the shell body facing the frame body, and the second enclosure extends at least partially into the groove. An elastic ring is provided in the groove. The elastic ring is deformed by the compression of the second enclosure during the tightening of the fastener to form a sealing structure. In this way, the sealing of the connection between the shell and the connecting frame is effectively guaranteed, the circuit board assembly is effectively protected, the problem of oil ingress failure of the circuit board assembly is avoided, and the structure is simple.

[0011] For example, the groove has an inner wall and an outer wall, with the first enclosure forming the outer wall. Furthermore, in the direction perpendicular to the housing body, the height of the outer wall is not less than the height of the inner wall. This further ensures the sealing of the connection between the housing and the connecting frame, effectively protecting the circuit board assembly and preventing oil ingress failure.

[0012] For example, the frame body has a connecting post formed on the side facing the shell body, and the fastener is threaded to the connecting post. In this way, the connection between the shell and the connecting frame is guaranteed to be strong, and the structure is simple and easy to assemble and disassemble the shell.

[0013] For example, the housing body is provided with a connecting part, and the circuit board assembly includes a fixing frame and a circuit board disposed on the fixing frame. The fixing frame is provided with a connecting mating part, and the connecting part is connected to the connecting mating part. In this way, the circuit board and the fixing frame are detachably connected, so that the fixing frame can be adapted to different circuit boards for installation, improving adaptability. Moreover, the connection between the connecting part and the connecting mating part facilitates the disassembly and assembly of the fixing frame, thereby facilitating the disassembly and assembly of the circuit board assembly.

[0014] For example, a through hole is provided in the enclosure body, and a wire is connected to the circuit board, extending out of the receiving cavity through the through hole. This facilitates the installation of the circuit board and allows for electrical connection between the circuit board and other components.

[0015] For example, the circuit board is disposed on the side of the fixing frame facing the main body of the shell, and the circuit board has through holes, through which the connecting part connects with the connecting mating part. In this way, the structure is simple, easy to install the circuit board, and can fix the circuit board, avoiding the problem of the circuit board being damaged by colliding with the enclosure.

[0016] According to another aspect of this utility model, a flap assembly is provided, including a flap and a switch assembly as described above, with an adhesive portion attached to the flap. Since the switch assembly as described above has the aforementioned beneficial effects, the flap assembly including the switch assembly as described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0017] For example, the flap has a mounting surface, and the adhesive part has an abutting surface and a glue groove. The abutting surface abuts against the mounting surface, and the glue groove is recessed from the abutting surface toward the housing. This facilitates the installation of the connecting frame and ensures a firm connection between the connecting frame and the flap assembly.

[0018] For example, the glue applicator groove is annular, and the annular groove is located at the periphery of the opening. This effectively ensures the sealing of the connection between the connecting frame and the mounting surface, effectively protecting the circuit board and preventing oil ingress and failure.

[0019] According to another aspect of this utility model, a range hood is provided, including a smoke collection hood and a flap assembly as described above. The smoke collection hood is provided with an air inlet, which is opened or closed by the flap assembly. Since the flap assembly described above has the aforementioned beneficial effects, the range hood including the flap assembly described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0020] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0021] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0023] Figure 1 A perspective view of a switch assembly as an exemplary embodiment of the present invention;

[0024] Figure 2 for Figure 1 Exploded view of the switch assembly in the diagram;

[0025] Figure 3 A cross-sectional view illustrating the internal structure of the switch assembly in an exemplary embodiment of this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of section A;

[0027] Figure 5 for Figure 1 A 3D view of the connecting frame in the middle;

[0028] Figure 6 for Figure 1 A three-dimensional view of the inner shell.

[0029] The above figures include the following reference numerals:

[0030] 1. Switch assembly; 10. Housing; 110. Housing body; 111. Connecting part; 1111. First blind hole; 120. First enclosure; 130. Second mounting hole; 140. Reinforcing rib; 20. Connecting frame; 210. Adhesive part; 211. Abutting surface; 212. Glue groove; 220. Frame body; 230. Second enclosure; 240. Connecting post; 241. First mounting hole; 30. Circuit board Components; 310, fixing frame; 311, connecting mating part; 3111, second blind hole; 320, circuit board; 321, through hole; 330, wire; 40, fastener; 50, receiving cavity; 510, opening; 60, enclosure; 610, through hole; 620, reserved hole; 630, sealing plate; 640, notch; 70, groove; 710, inner wall of groove; 720, outer wall of groove; 80, elastic ring. Detailed Implementation

[0031] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0032] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0033] This utility model provides a switch assembly. The switch assembly provided by this utility model can be mounted on a flap assembly, which can be applied to a range hood. The following will describe in detail a switch assembly according to an embodiment of this utility model with reference to the accompanying drawings.

[0034] See also Figures 1 to 6 The switch assembly 1 may include a housing 10, a connecting frame 20, and a circuit board assembly 30. The connecting frame 20 may be connected to the housing 10 by fasteners 40 and enclose the housing 10 to form a receiving cavity 50 with an opening 510 at one end. The circuit board assembly 30 may be disposed within the receiving cavity 50 through the opening 510, and the connecting frame 20 may have an adhesive portion 210 on the side away from the housing 10.

[0035] The switch assembly 1 of this utility model has a connecting frame 20 connected to the housing 10 by fasteners 40, which together with the housing 10 form a receiving cavity 50 with an opening 510 at one end. The circuit board assembly 30 is disposed in the receiving cavity 50 through the opening 510. On the one hand, it is convenient to disassemble and assemble the housing 10, thereby facilitating the disassembly and replacement of the circuit board assembly 30 and improving adaptability. On the other hand, it avoids the problem of oil ingress into the circuit board assembly 30 due to gaps, ensuring the sealing effect and effectively protecting the circuit board assembly 30.

[0036] Understandably, the connecting frame 20 can be bonded to the surface to be installed (i.e., the mounting surface on the flip plate below) via the adhesive part 210 so that the surface to be installed covers the opening 510, thus ensuring a sealing effect.

[0037] See again Figures 1 to 6The housing 10 may have a housing body 110 and a first enclosure 120 extending from the housing body 110. The connecting frame 20 may have a frame body 220 and a second enclosure 230 extending from the frame body 220. The frame body 220 may be opposite to the housing body 110. The first enclosure 120 may be fitted together with the second enclosure 230 to form a retaining body 60. The housing body 110 and the retaining body 60 may be fitted together to form a receiving cavity 50. In this way, the first enclosure 120 and the second enclosure 230 are fitted together to form the retaining body 60, which prevents oil from entering the receiving cavity 50 through the gap between the first enclosure 120 and the second enclosure 230, ensuring the sealing of the connection between the housing 10 and the connecting frame 20, effectively protecting the circuit board assembly 30, and avoiding the problem of oil ingress failure of the circuit board assembly 30.

[0038] Understandably, the first enclosure 120 and the second enclosure 230 fitting together to form the enclosure 60 means that the first enclosure 120 and the second enclosure 230 at least partially form surface contact. This could mean that the inner surface of the first enclosure 120 fits against the outer surface of the second enclosure 230, or the outer surface of the first enclosure 120 fits against the inner surface of the second enclosure 230. In this way, the surface contact areas of the first enclosure 120 and the second enclosure 230 can form a surface sealing structure, effectively ensuring the sealing of the connection.

[0039] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 The housing body 110 may also be provided with reinforcing ribs 140. The reinforcing ribs 140 can improve the structural strength of the housing body 110. Specifically, the reinforcing ribs 140 can be provided on the side of the housing body 110 near the receiving cavity 50 to avoid the problem of oil stains adhering to the reinforcing ribs 140 and being difficult to clean, and to make the appearance of the switch assembly 1 more concise.

[0040] See also Figures 2 to 4 The frame body 220 may have a groove 70 formed on the side facing the shell body 110. The first enclosure 120 may extend at least partially into the groove 70, and an elastic ring 80 may be provided in the groove 70. The elastic ring 80 may be deformed by the compression of the first enclosure 120 during the tightening of the fastener 40 to form a sealing structure. In this way, the sealing of the connection between the shell 10 and the connecting frame 20 is effectively guaranteed, the circuit board assembly 30 is effectively protected, the problem of oil ingress failure of the circuit board assembly 30 is avoided, and the structure is simple.

[0041] Understandably, at this time the second enclosure 230 is located outside the first enclosure 120.

[0042] The elastic ring 80 can be made of rubber. Rubber has good elasticity and sealing properties, is suitable for various working environments, and is inexpensive. Of course, the elastic ring 80 can also be made of other elastic materials.

[0043] See also Figure 3 and Figure 4 The groove 70 may have an inner wall 710 and an outer wall 720. The second enclosure 230 may form the outer wall 720, and in the direction perpendicular to the frame body 220, the height of the outer wall 720 (i.e., Figure 4 H1 in the groove can be no less than the height of the inner wall of the groove (i.e., H1). Figure 4 (H2 in the text). Understandably, the height of the inner wall 710 here refers to the distance between the farthest end of the inner wall 710 and the frame body 220, and the height of the outer wall 720 refers to the distance between the farthest end of the outer wall 720 and the frame body 220. This further ensures the sealing of the connection between the housing 10 and the connecting frame 20, effectively protecting the circuit board assembly 30 and preventing oil ingress failure of the circuit board assembly 30.

[0044] In some embodiments, such as Figure 3 and Figure 4 In the direction perpendicular to the frame body 220, the height of the first enclosure 120 (i.e. Figure 4 H3 in the middle can be slightly larger than the height of the outer wall of the tank (i.e., 720). Figure 4 The height of the first enclosure 120 (H1) is used to ensure that the first enclosure 120 can compress the elastic ring 80 to deform the elastic ring 80 and form a sealing structure. Understandably, the height of the first enclosure 120 here refers to the distance between the farthest end of the first enclosure 120 and the shell body 110. In this way, a double sealing structure can be formed between the shell 10 and the connecting frame 20, effectively ensuring the sealing of the connection between the shell 10 and the connecting frame 20.

[0045] In an embodiment not shown, a groove 70 may be formed on the side of the housing body 110 facing the frame body 220. The second enclosure 230 may extend at least partially into the groove 70, and an elastic ring 80 may be provided in the groove 70. The elastic ring 80 may be deformed by the compression of the second enclosure 230 during the tightening of the fastener 40 to form a sealing structure. In this way, the sealing of the connection between the housing 10 and the connecting frame 20 is effectively guaranteed, the circuit board assembly 30 is effectively protected, the problem of oil ingress failure of the circuit board assembly 30 is avoided, and the structure is simple.

[0046] Understandably, at this time the second enclosure 230 is located inside the first enclosure 120.

[0047] In an embodiment not shown, the groove 70 may have an inner wall 710 and an outer wall 720. The first enclosure 120 may form the outer wall 720, and the height of the outer wall 720 may not be less than the height of the inner wall 710 in the direction perpendicular to the housing body 110. Understandably, the height of the inner wall 710 refers to the distance between its farthest point and the housing body 110, and the height of the outer wall 720 refers to the distance between its farthest point and the housing body 110. This further ensures the sealing of the connection between the housing 10 and the connecting frame 20, effectively protecting the circuit board assembly 30 and preventing oil ingress failure of the circuit board assembly 30.

[0048] In an embodiment not shown, the height of the second enclosure 230 in the direction perpendicular to the frame body 220 may be slightly greater than the height of the outer wall 720 of the groove, to ensure that the second enclosure 230 can compress the elastic ring 80 to deform the elastic ring 80 and form a sealing structure. Understandably, the height of the second enclosure 230 here refers to the distance between the farthest end of the second enclosure 230 and the frame body 220. Thus, a double sealing structure can be formed between the housing 10 and the connecting frame 20, effectively ensuring the sealing of the connection between the housing 10 and the connecting frame 20.

[0049] See also Figures 1 to 6 The frame body 220 may have a connecting post 240 formed on the side facing the shell body 110. The fastener 40 can be threadedly connected to the connecting post 240. In this way, the connection between the shell 10 and the connecting frame 20 is guaranteed to be firm, and the structure is simple and easy to disassemble and assemble the shell 10.

[0050] In some embodiments, such as Figures 1 to 6 A first mounting hole 241 may be provided on the connecting post 240. Internal threads may be provided on the wall of the first mounting hole 241. A second mounting hole 130 penetrating the housing 10 may be provided on the housing 10. A fastener 40 may pass through the second mounting hole 130 and be threadedly connected to the first mounting hole 241. In this case, the fastener 40 can be a screw, bolt, etc. This ensures a firm connection and facilitates the installation of the housing 10.

[0051] In an embodiment not shown, the connecting post 240 can pass through the second mounting hole 130 and be locked by the fastener 40. The connecting post 240 may be provided with external threads. In this case, the fastener 40 can be a nut or the like.

[0052] See also Figure 2 , Figure 3 , Figure 4 and Figure 6The housing body 110 may be provided with a connecting portion 111. The circuit board assembly 30 may include a fixing frame 310 and a circuit board 320 disposed on the fixing frame 310. The fixing frame 310 may be provided with a connecting mating portion 311. The connecting portion 111 can be connected to the connecting mating portion 311. In this way, the circuit board 320 and the fixing frame 310 are detachably connected, so that the fixing frame 310 can be adapted to different circuit boards 320 for installation, improving adaptability. Furthermore, the connection between the connecting portion 111 and the connecting mating portion 311 facilitates the disassembly and assembly of the fixing frame 310, thereby facilitating the disassembly and assembly of the circuit board assembly 30.

[0053] In some embodiments, such as Figure 2 , Figure 3 , Figure 4 and Figure 6 The connecting portion 111 can be configured as a protruding post with a first blind hole 1111. The connecting mating portion 311 can be configured as a protruding post with a second blind hole 3111. Understandably, the connecting portion 111 and the connecting mating portion 311 can abut against the circuit board 320, thereby fixing the circuit board 320 in a direction perpendicular to the switch assembly 1. At this time, a fixing post (not shown in the figure) that can pass through the first blind hole 1111, the through hole 321, and the second blind hole 3111 can be provided to fix the circuit board 320 in a direction parallel to the switch assembly 1. Specifically, after placing the fixing frame 310 in the connecting frame 20, the fixing post can be inserted into the second blind hole 3111 first, then the through hole 321 can be fitted onto the fixing post, then the first blind hole 1111 can be fitted onto the fixing post, and finally the housing 10 and the connecting frame 20 can be locked by the fastener 40. The connecting part 111 presses the connecting mating part 311 to make the fixing frame 310 fit tightly against the surface to be installed, so that the connecting part 111 and the connecting mating part 311 fit tightly against the circuit board 320, thus completing the fixed installation of the circuit board 320.

[0054] In an embodiment not shown, one of the connecting portion 111 and the connecting mating portion 311 can be configured as a stepped post having a large-diameter section and a small-diameter section, and the other of the connecting portion 111 and the connecting mating portion 311 can be configured as a protruding post with a blind hole that mates with the small-diameter section. The large-diameter section of the stepped post can abut against the protruding post, and the small-diameter section can extend through the through hole 321 into the blind hole to complete the fixed installation of the circuit board 320.

[0055] In an embodiment not shown, one of the connecting portion 111 and the connecting mating portion 311 can be configured as a stepped post having a large-diameter section and a small-diameter section, and the other of the connecting portion 111 and the connecting mating portion 311 can be configured as a blind hole that mates with the small-diameter section. The large-diameter section of the stepped post can abut against one of the housing 10 and the fixing frame 310 where the blind hole is provided, and the small-diameter section can extend through the through hole 321 into the blind hole to complete the fixed installation of the circuit board 320.

[0056] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 A through hole 610 may be provided on the enclosure 60. A wire 330 may be connected to the circuit board 320. The wire 330 may extend out of the receiving cavity 50 through the through hole 610. This facilitates the installation of the circuit board 320 and facilitates the electrical connection of the circuit board 320 with other components.

[0057] Specifically, after the wire 330 extends out of the receiving cavity 50 through the through hole 610, it can be sealed with glue at the through hole 610 to prevent oil from entering the receiving cavity 50 through the through hole 610, thus ensuring the sealing effect.

[0058] In some embodiments, such as Figure 2 and Figure 6 A through hole 610 may be provided on the first enclosure 120. Understandably, as... Figure 2 and Figure 5 At this time, a notch 640 can be provided on the second enclosure 230 at the position corresponding to the through hole 610 so that the wire 330 can smoothly extend out of the receiving cavity 50 through the through hole 610.

[0059] In an embodiment not shown, a through hole 610 may be provided on the second enclosure 230. Understandably, at this time, a notch 640 may be provided on the first enclosure 120 at the position corresponding to the through hole 610, so that the wire 330 can smoothly extend out of the receiving cavity 50 through the through hole 610.

[0060] In an embodiment not shown, the first enclosure 120 and the second enclosure 230 may simultaneously have through holes 610.

[0061] Furthermore, such as Figure 1 , Figure 2 and Figure 6The through hole 610 may include a pre-drilled hole 620. The pre-drilled hole 620 provides an option for future expansion. A sealing plate 630 may be provided inside the pre-drilled hole 620. The sealing plate 630 can cover the pre-drilled hole 620 to prevent oil from entering the receiving cavity 50 through the pre-drilled hole 620. When the pre-drilled hole 620 is needed, the sealing plate 630 can be removed to allow the wire 330 to extend out of the receiving cavity 50 through the pre-drilled hole 620.

[0062] See also Figures 2 to 3 The circuit board 320 can be disposed on the side of the fixing frame 310 facing the housing body 110. A through hole 321 can be provided on the circuit board 320. The connecting part 111 can be connected to the connecting mating part 311 through the through hole 321. This design simplifies the structure, facilitates the installation of the circuit board 320, and allows for its fixation, preventing damage to the circuit board 320 due to collision with the enclosure 60.

[0063] Understandably, the fixed frame 310 only needs to ensure that the structure of the connecting and mating part 311 remains unchanged, while the rest can be designed with different structures to adapt to different circuit boards 320. After replacing different circuit boards 320, the circuit board assembly 30 after replacing the circuit board 320 can be installed by means of the connecting and mating part 311 without changing other structures, which improves the adaptability of the switch assembly 1 and enhances the user experience.

[0064] According to another aspect of the present invention, a flap assembly is provided, including a flap (not shown in the figure) and a switch assembly 1 as described above. An adhesive portion 210 can be attached to the flap. Since the switch assembly 1 described above has the aforementioned beneficial effects, the flap assembly including the switch assembly 1 also has the aforementioned beneficial effects, which will not be elaborated further here.

[0065] See also Figure 2 , Figure 3 and Figure 5 The flap may have a mounting surface, which should be understood to be a non-exposed surface of the flap. The adhesive portion 210 may have an abutment surface 211 and a glue-applying groove 212. The abutment surface 211 abuts against the mounting surface. The glue-applying groove 212 is recessed from the abutment surface 211 toward the housing 10. This facilitates the installation of the connecting frame 20 and ensures a strong connection between the connecting frame 20 and the flap assembly. The connecting frame 20 can be bonded to the mounting surface by filling the glue-applying groove 212 with adhesive. Furthermore, a portion of the adhesive may overflow the glue-applying groove 212 to facilitate the installation of the connecting frame 20. The adhesive can be silicone sealant. Silicone sealant has the characteristics of good sealing performance and high durability. Of course, the adhesive filling the glue-applying groove 212 can also be other types of adhesives.

[0066] See again Figure 2 , Figure 3 and Figure 5 The glue-applying groove 212 can be annular, and the annular glue-applying groove 212 can be located on the periphery of the opening 510. In this way, the sealing of the connection between the connecting frame 20 and the mounting surface is effectively guaranteed, the circuit board 320 is effectively protected, and the problem of oil ingress and failure of the circuit board 320 is avoided.

[0067] According to another aspect of this utility model, a range hood (not shown in the figure) is provided, including a smoke collection hood and a flap assembly as described above. An air inlet may be provided on the smoke collection hood. The air inlet can be opened or closed by the flap assembly. Since the flap assembly described above has the aforementioned beneficial effects, the range hood including the flap assembly described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0068] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0069] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0071] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0072] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A switching assembly, characterized in that, The device includes a housing, a connecting frame, and a circuit board assembly. The connecting frame is connected to the housing by fasteners and surrounds the housing to form a receiving cavity with one end open. The circuit board assembly is disposed in the receiving cavity through the opening, and the connecting frame has an adhesive portion on the side away from the housing.

2. The switching assembly according to claim 1, characterized in that, The housing has a shell body and a first enclosure extending from the shell body, the connecting frame has a frame body and a second enclosure extending from the frame body, the frame body is opposite to the shell body, the first enclosure and the second enclosure are fitted together to form a barrier, and the shell body and the barrier enclose to form the receiving cavity.

3. The switching assembly according to claim 2, characterized in that, The frame body has a groove on the side facing the shell body, the first enclosure body extends at least partially into the groove, and an elastic ring is provided in the groove. The elastic ring is deformed by the first enclosure body during the tightening of the fastener to form a sealing structure.

4. The switching assembly according to claim 3, characterized in that, The groove has an inner wall and an outer wall, the second enclosure forms the outer wall, and the height of the outer wall is not less than the height of the inner wall in the direction perpendicular to the frame body.

5. The switching assembly according to claim 2, characterized in that, A groove is formed on the side of the shell body facing the frame body. The second enclosure extends at least partially into the groove, and an elastic ring is provided in the groove. The elastic ring is deformed by the second enclosure during the tightening of the fastener to form a sealing structure.

6. The switching assembly according to claim 5, characterized in that, The groove has an inner wall and an outer wall, the first enclosure forming the outer wall, and the height of the outer wall is not less than the height of the inner wall in the direction perpendicular to the shell body.

7. The switching assembly according to claim 2, characterized in that, The frame body has a connecting post formed on the side facing the shell body, and the fastener is threadedly connected to the connecting post.

8. The switching assembly according to claim 2, characterized in that, The shell body is provided with a connecting part, and the circuit board assembly includes a fixing frame and a circuit board disposed on the fixing frame. The fixing frame is provided with a connecting mating part, and the connecting part is connected to the connecting mating part.

9. The switching assembly according to claim 8, characterized in that, The enclosure has a through hole, and the circuit board is connected to a wire, which extends out of the receiving cavity through the through hole.

10. The switching assembly according to claim 8, characterized in that, The circuit board is disposed on the side of the fixed frame facing the shell body, and the circuit board is provided with through holes. The connecting part is connected to the connecting mating part through the through holes.

11. A flap assembly, characterized in that, It includes a flap and a switch assembly as described in any one of claims 1-10, wherein the adhesive portion is attached to the flap.

12. The flap assembly according to claim 11, characterized in that, The flap has a mounting surface, and the adhesive part has an abutting surface and a glue groove. The abutting surface abuts against the mounting surface, and the glue groove is recessed from the abutting surface toward the housing.

13. The flap assembly according to claim 12, characterized in that, The glue-applying groove is annular, and the annular glue-applying groove is located on the periphery of the opening.

14. A range hood, characterized in that, It includes a smoke hood and a flap assembly as described in any one of claims 11-13, wherein the smoke hood is provided with an air inlet, and the air inlet is opened or closed by the flap assembly.

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