Range hood

Abstract

The utility model discloses a kind of range hood. Range hood includes rack assembly, fan assembly is equipped in rack assembly;Head, head is fixedly connected with rack assembly, head is equipped with containing cavity;Cavity assembly, at least a part of cavity assembly is in containing cavity, cavity assembly is liftably connected with rack assembly;Driving assembly, driving assembly is connected with cavity assembly and is used to drive cavity assembly to lift;Synchronization component, synchronization component includes multiple synchronization mechanism, synchronization mechanism includes rotatable connection linkage and connecting piece, linkage is connected with cavity assembly by connecting piece, the linkage of multiple synchronization mechanism is connected by meshing mode, synchronization component is used to utilize multiple linkage to make cavity assembly synchronous lifting in lifting process. In the above-mentioned range hood, cavity assembly can be avoided to a certain extent in lifting process Shaking or tilting, and then cavity assembly can be avoided to be jammed or to emit larger noise when moving.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliances, and in particular to a range hood. Background Technology

[0002] In related technologies, range hoods are trending towards being fully concealed, meaning they can be hidden inside cabinets. These range hoods feature a height-adjustable cavity assembly. To achieve this, the range hood includes a drive assembly that moves the cavity assembly up and down. However, during this process, the cavity assembly is prone to wobbling, potentially causing it to jam or produce excessive noise. Utility Model Content

[0003] This utility model provides a range hood to solve at least one of the aforementioned technical problems.

[0004] This utility model provides a range hood, the range hood comprising: A rack assembly, wherein a fan assembly is provided within the rack assembly; The machine head is fixedly connected to the frame assembly, and the machine head is provided with a receiving cavity; A cavity assembly, at least a portion of which is disposed within the receiving cavity, the cavity assembly being vertically and vertically connected to the frame assembly; A drive assembly, which is connected to the cavity assembly and is used to drive the cavity assembly to move up and down; A synchronization component, comprising multiple synchronization mechanisms, each including a rotatably connected linkage and a connecting member, wherein the linkage is connected to the cavity assembly via the connecting member, and the linkages of the multiple synchronization mechanisms are interconnected by meshing, the synchronization component being used to enable the cavity assembly to achieve synchronous lifting and lowering during the lifting and lowering process using the multiple linkages.

[0005] In the aforementioned range hood, the synchronization component is used to achieve synchronous lifting and lowering of the cavity component during the lifting and lowering process by using multiple linkage components. This can, to a certain extent, prevent the cavity component from shaking or tilting during the lifting and lowering process, thereby preventing the cavity component from jamming or making a lot of noise when moving.

[0006] In some embodiments, the synchronization mechanism includes a first connecting plate, one end of the connector is rotatably connected to the first connecting plate, the other end of the connector is rotatably connected to the linkage member, the machine head is provided with a through hole, the first connecting plate passes through the through hole and is connected to the cavity assembly, and is movably connected to the frame assembly.

[0007] In some embodiments, the synchronization mechanism includes a second connecting plate fixed to the frame assembly, and the first connecting plate and the second connecting plate are movably connected.

[0008] In some embodiments, the range hood includes a slide rail assembly, which includes a slide rail and a slider that are slidably connected, one of the slide rail and the slider being disposed on the first connecting plate and the other being disposed on the second connecting plate.

[0009] In some embodiments, the synchronization component includes a mounting member disposed on the frame assembly, and the linkage members of the plurality of synchronization mechanisms are rotatably connected to the mounting member.

[0010] In some embodiments, the synchronization component is a component symmetrical about the central axis of the range hood.

[0011] In some implementations, the synchronization component is located outside the rack assembly.

[0012] In some embodiments, the cavity assembly has a retractable position and an open position. When the cavity assembly is in the retractable position, it is retracted into the receiving cavity. When the cavity assembly is in the open position, it extends out of the receiving cavity. The cavity assembly includes a surrounding plate. A first limiting portion is provided at the upper periphery of the surrounding plate, and a second limiting portion is provided at the lower end of the frame assembly. When the cavity assembly is in the open position, the first limiting portion and the second limiting portion cooperate to limit the cavity assembly.

[0013] In some embodiments, the drive assembly includes a drive member and a transmission mechanism. The drive member is connected to the cavity assembly through the transmission mechanism. The drive member is used to drive the transmission mechanism to move the cavity assembly up and down. When the cavity assembly moves up and down, the cavity assembly drives the other synchronization mechanisms to move synchronously through at least one synchronization mechanism, so that the cavity assembly can move up and down synchronously.

[0014] In some embodiments, the frame assembly is provided with a receiving slot, and at least a portion of the transmission mechanism and the drive member are disposed in the receiving slot.

[0015] Additional aspects and advantages of the embodiments of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1This is a structural schematic diagram of the range hood with the cavity assembly in the storage position according to the present invention. Figure 2 This is a schematic diagram of the structure of the range hood in the open position according to the embodiment of this utility model; Figure 3 This is an exploded view of the range hood according to an embodiment of the present utility model; Figure 4 This is an exploded view of the synchronization component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the machine head structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the cavity assembly according to an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the rack assembly according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the driving component according to an embodiment of the present invention.

[0017] Explanation of key component symbols: Range hood 100, frame assembly 10, head unit 20, cavity assembly 30, drive assembly 40, synchronization assembly 50, receiving slot 12, second limiting part 13, receiving cavity 14, receiving cavity 21, through hole 22, smoke extraction plate 31, oil cup 32, surrounding plate 33, transmission mechanism 41, drive component 42, synchronization mechanism 51, mounting component 52, opening 211, first limiting part 331, first connecting plate 511, second connecting plate 512, slide rail assembly 60, movable rod 411, third connecting plate 412, fourth connecting plate 413, connector 514, linkage component 515, slide rail 61, slider 62. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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 of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] This disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0023] Please see Figure 3This utility model provides a range hood 100, which includes a frame assembly 10, a head unit 20, a cavity assembly 30, a drive assembly 40, and a synchronization assembly 50. The frame assembly 10 houses a fan assembly. The head unit 20 is fixedly connected to the frame assembly 10 and has a receiving cavity 21. At least a portion of the cavity assembly 30 is disposed within the receiving cavity 21, and the cavity assembly 30 is vertically and flexibly connected to the frame assembly 10. The drive assembly 40 is connected to the cavity assembly 30 and drives the cavity assembly 30 to rise and fall. The synchronization assembly 50 includes multiple synchronization mechanisms 51, each including a rotatably connected linkage 515 and a connecting member 514. The linkage 515 is connected to the cavity assembly 30 via the connecting member 514. The linkage 515s of the multiple synchronization mechanisms 51 are interconnected by meshing, and the synchronization assembly 50 is used to achieve synchronous rising and falling of the cavity assembly 30 during the rising and falling process using the multiple linkage 515s.

[0024] In the range hood 100 described above, the synchronization component 50 is used to enable the cavity component 30 to move synchronously during the lifting and lowering process by using multiple linkage components 515. This can, to a certain extent, prevent the cavity component 30 from shaking or tilting during the lifting and lowering process, thereby preventing the cavity component 30 from jamming or making a lot of noise when moving.

[0025] Specifically, the range hood 100 has vertical, horizontal, and front-to-back directions, with the front direction being the direction the range hood 100 faces after installation. The range hood 100 can be installed above the cooking area to absorb and exhaust the fumes generated during cooking, maintaining a clean and comfortable kitchen environment. Please refer to... Figure 1 and Figure 2 The range hood 100 includes a frame assembly 10, a head unit 20, and a cavity assembly 30. The head unit 20 is located below the frame assembly 10 and is fixedly connected to the lower end of the frame assembly 10 by means including but not limited to screws or welding. At least a portion of the cavity assembly 30 is disposed in the receiving cavity 21 of the head unit 20.

[0026] Optionally, the cavity assembly 30 includes a smoke extraction plate 31, which can be configured with the head unit 20 to form at least part of a smoke collection chamber. Optionally, in the installed state, the rear sides of the frame assembly 10 and the head unit 20 of the range hood 100 are vertically arranged to fit against the wall, and the frame assembly 10 and the head unit 20 can be housed in a cabinet, thereby making the kitchen more tidy. Optionally, the cavity assembly 30 includes an oil cup 32 for collecting grease condensed on the smoke extraction plate 31.

[0027] The frame assembly 10 has a receiving cavity 14. The smoke extraction plate 31 has an air inlet communicating with the receiving cavity 14 and the smoke collection cavity. The fan assembly is located in the receiving cavity 14. The top of the frame assembly 10 has a smoke exhaust hole. A check valve (not shown) can be located at the smoke exhaust hole and can be connected to the smoke exhaust pipe. When the range hood 100 is working, the fan assembly runs to create a negative pressure at the smoke collection cavity, so that the smoke collection cavity captures and collects the oil fumes generated during cooking. The oil fumes can enter the receiving cavity 14 through the air inlet of the smoke extraction plate 31 and be discharged from the smoke exhaust hole. Optionally, the range hood 100 may include a filter assembly, which is located in the frame assembly 10, for removing grease and large particles from the oil fumes, as well as condensed oil fumes. The filtered oil fumes are accelerated by the fan assembly into the smoke exhaust pipe and discharged outdoors.

[0028] In one embodiment, the drive assembly 40 includes a drive member 42 and a transmission mechanism 41. The drive member 42 can drive the transmission mechanism 41 to move the cavity assembly 30 up and down, so that the cavity assembly 30 can be accommodated in the receiving cavity 21 of the machine head 20 or extend out of the receiving cavity 21 of the machine head 20. The drive member 42 may include, but is not limited to, a motor, a cylinder, or other components that can generate driving force.

[0029] exist Figure 1 In the middle, the cavity assembly 30 is housed in the receiving cavity 21 of the head 20, and the cavity assembly 30 is located in the storage position. Figure 2 In the middle, the cavity assembly 30 extends out of the receiving cavity 21 of the head 20, and the cavity assembly 30 is in the open position.

[0030] In related technologies, fully concealed range hoods are equipped with a liftable cavity assembly. When the user needs to cook, the cavity assembly can precisely lower to the appropriate position, allowing the smoke extraction plate of the cavity assembly to absorb cooking fumes; after cooking, the cavity assembly can automatically rise and be housed in the unit hidden in the cabinet, instantly restoring the kitchen to a clean and organized state.

[0031] To achieve this function of the height-adjustable cavity assembly, the range hood needs to have a drive component inside, which drives the cavity assembly to move up and down. However, during the process of the drive component moving the cavity assembly up and down, the cavity assembly is prone to shaking, which may cause the cavity assembly to jam or produce excessive noise during movement.

[0032] In this embodiment of the utility model, the range hood 100 includes a synchronization component 50, which includes multiple synchronization mechanisms 51. Each synchronization mechanism 51 includes a rotatably connected linkage member 515 and a connecting member 514. The linkage member 515 is connected to the cavity assembly 30 through the connecting member 514. The linkage members 515 of the multiple synchronization mechanisms 51 are interconnected by meshing. The synchronization component 50 is used to enable the cavity assembly 30 to move synchronously during the lifting and lowering process by using multiple linkage members 515, thereby avoiding shaking or tilting of the cavity assembly 30 during the lifting and lowering process to a certain extent, and thus avoiding jamming of the cavity assembly 30 or excessive noise during movement.

[0033] It is understood that the linkage 515 may include gears, racks, or other structures that can achieve meshing connection, and the linkages 515 of multiple synchronization mechanisms 51 are interconnected by meshing. During the lifting and lowering of the cavity assembly 30, the meshing gears or racks among the multiple meshing linkages 515 can constrain each other to make the displacement of the cavity assembly 30 in the vertical direction of the range hood 100 the same, thereby achieving synchronous lifting and lowering of the cavity assembly 30.

[0034] It is understood that the range hood 100 in this embodiment of the present invention is composed of independent functional modules, including but not limited to the integrated module of frame assembly 10, head unit 20, cavity assembly 30, drive assembly 40 and synchronization assembly 50, so as to realize modular installation of the whole machine and improve production efficiency to a certain extent.

[0035] In some implementations, please refer to Figure 3 and Figure 4 The synchronization mechanism 51 includes a first connecting plate 511, one end of a connector 514 is rotatably connected to the first connecting plate 511, the other end of the connector 514 is rotatably connected to the linkage 515, the machine head 20 is provided with a through hole 22, the first connecting plate 511 passes through the through hole 22 and is connected to the cavity assembly 30, and is movably connected to the frame assembly 10.

[0036] The above embodiments can improve the operational reliability of the cavity assembly 30 during the lifting process.

[0037] Specifically, a through hole 22 is provided on the top of the machine head 20. The through hole 22 can be located on both sides of the frame assembly 10 in the left-right direction and / or front-back direction. The first connecting plate 511 of the synchronization mechanism 51 passes through the through hole 22. The first connecting plate 511 can be connected to the cavity assembly 30 and movably connected to the frame assembly 10.

[0038] One end of the connector 514 is rotatably connected to the first connecting plate 511, and the other end of the connector 514 is rotatably connected to the linkage 515.

[0039] During the lifting and lowering process of the cavity assembly 30 driven by the drive assembly 40, the movement of the cavity assembly 30 can be transmitted to the linkage 515 in sequence through the first connecting plate 511 and the connecting member 514. Then, through another linkage 515 that is correspondingly engaged, the other connecting member 514 and the other first connecting plate 511 are driven to move synchronously, thereby realizing the synchronous lifting and lowering of the cavity assembly 30.

[0040] It is understandable that the first connector 514 is connected to the cavity assembly 30 through the first connecting plate 511, which can increase the connection area with the cavity assembly 30 and make the cavity assembly 30 operate more reliably during the lifting process.

[0041] It is understandable that the through hole 22 can prevent the first connecting plate 511 from being disturbed by the frame assembly 10 and the head 20 when it moves. At the same time, it can ensure the coordinated action between the frame assembly 10, the head 20, the cavity assembly 30, the drive assembly 40 and the synchronization assembly 50, realize the modular installation of the whole machine, and improve the operational reliability of the range hood 100 to a certain extent.

[0042] In some implementations, please refer to Figure 4 The synchronization mechanism 51 includes a second connecting plate 512, which is fixed on the frame assembly 10. The first connecting plate 511 and the second connecting plate 512 are movably connected.

[0043] In the above embodiments, the impact of the first connecting plate 511 on the frame assembly 10 can be reduced, thereby extending the service life of the range hood 100.

[0044] Specifically, the second connecting plate 512 can be connected to the frame assembly 10 by welding, screwing, or integral molding. The first connecting plate 511 and the second connecting plate 512 are movably connected, so that the first connecting plate 511 can be movably connected to the frame assembly 10 through the second connecting plate 512. Optionally, a slide rail assembly 60 is provided between the first connecting plate 511 and the second connecting plate 512.

[0045] It is understandable that when the first connecting plate 511 is directly connected to the frame assembly 10, the frame assembly 10 may experience slight deformation or stress concentration due to the force when the cavity assembly 30 moves up and down. The first connecting plate 511 is movably connected to the frame assembly 100 through the second connecting plate 512, which can reduce the impact of the first connecting plate 511 on the frame assembly 10 and thus extend the service life of the range hood 100.

[0046] In some implementations, please refer to Figure 4The range hood 100 includes a slide rail assembly 60, which includes a slide rail 61 and a slider 62 that are slidably connected. One of the slide rail 61 and the slider 62 is disposed on a first connecting plate 511, and the other is disposed on a second connecting plate 512.

[0047] In the above embodiments, the slide rail assembly 60 can guide the movement direction of the first connecting plate 511 to prevent the first connecting plate 511 from deviating or getting stuck during movement.

[0048] Specifically, the slide rail assembly 60 may include a slide rail 61 and a slider 62. In one embodiment, the slide rail 61 is disposed on a first connecting plate 511, and the slider 62 is disposed on a second connecting plate 512. In another embodiment, the slide rail 61 is disposed on the second connecting plate 512, and the slider 62 is disposed on the first connecting plate 511. The shape of the slider 62 is adapted to a groove formed in the slide rail 61, and the slider 62 is disposed in the groove.

[0049] When the drive assembly 40 drives the cavity assembly 30 to move up and down, the cavity assembly 30 can drive at least one first connecting plate 511 to move, so that at least one first connecting plate 511 drives one of the slider 62 and the slide rail 61 to move relative to the other. This allows at least one first connecting plate 511 to move relative to the frame assembly 10 along the length direction of the slide rail 61 or the slide groove. Through multiple intermeshing linkages 515, the remaining first connecting plates 511 are driven to move synchronously, so that the cavity assembly 30 has the same displacement in the vertical direction of the range hood 100, thereby achieving synchronous lifting and lowering of the cavity assembly 30.

[0050] exist Figure 4 In one embodiment, the slide rail 61 is disposed on the side of the second connecting plate 512 facing the first connecting plate 511, and the slider 62 is disposed on the side of the first connecting plate 511 facing the second connecting plate 512 and located in the slide groove. In other embodiments, the slide rail 61 is disposed on the side of the first connecting plate 511 facing the second connecting plate 512, and the slider 62 may be disposed on the side of the second connecting plate 512 facing the first connecting plate 511 and located in the slide groove.

[0051] The number of slide rail assemblies 60 can be specifically limited according to actual conditions, and this utility model does not make a specific limitation in this regard. In one example, the number of slide rail assemblies 60 is two, respectively disposed on the first connecting plate 511 along the depth direction (e.g., Figures 1 to 4 (shown in the front-back direction) on both sides.

[0052] Alternatively, in other embodiments, the slide rail assembly 60 may be directly disposed between the first connecting plate 511 and the frame assembly 10. Specifically, one of the slide rail 61 and the slider 62 is disposed on the first connecting plate 511, and the other is disposed on the frame assembly 10.

[0053] In some implementations, please refer to Figure 3 and Figure 4 The synchronization component 50 includes a mounting component 52, which is mounted on the frame assembly 10. The linkage components 515 of the multiple synchronization mechanisms 51 are rotatably connected to the mounting component 52.

[0054] The stability of the synchronization component 50 can be improved in the above embodiments.

[0055] Specifically, mounting component 52 refers to a support structure for mounting multiple synchronization mechanisms 51 onto the rack assembly 10. Optionally, mounting component 52 may be a mounting plate or mounting frame, etc.

[0056] Mounting component 52 can make the relative positional relationship between multiple synchronization mechanisms 51 more stable, so that the synchronous lifting and lowering of multiple connection points can be achieved more stably during the lifting and lowering of cavity assembly 30.

[0057] Mounting member 52 is mounted on frame assembly 10. Mounting member 52 is rotatably connected to linkage members 515 of multiple synchronization mechanisms 51. Multiple linkage members 515 can rotate relative to mounting member 52.

[0058] Optionally, the fixing method between the mounting component 52 and the frame assembly 10 can be determined according to actual needs, including but not limited to screw fixing, welding or one-piece molding structure, thereby improving the installation convenience of multiple synchronization mechanisms 51.

[0059] In some implementations, please combine 1 and Figure 2 The synchronization component 50 is a component symmetrical about the central axis M of the range hood 100.

[0060] In the above embodiments, the cavity assembly 30 can be subjected to uniform force during synchronous lifting and lowering.

[0061] Specifically, the synchronization component 50 is a component symmetrical along the central axis M of the range hood 100, so that the cavity component 30 is subjected to uniform force during the lifting and lowering process, and to a certain extent avoids the cavity component 30 from tilting or shaking due to uneven force on one side during the lifting and lowering process.

[0062] Optionally, in Figure 2 In one embodiment, a synchronization component 50 is provided on the front side of the range hood 100. The synchronization component 50 includes two synchronization mechanisms 51. The two synchronization mechanisms 51 are symmetrically arranged along the central axis M of the range hood 100, that is, in the left and right direction of the range hood 100, the two synchronization mechanisms 51 are symmetrical along the central axis M of the range hood 100.

[0063] In some implementations, please refer to Figure 1 and Figure 2 The synchronization component 50 is located outside the rack component 10.

[0064] In the above embodiments, since the synchronization component 50 is located outside the frame component 10, oil fumes can be reduced or prevented from adhering to the synchronization component 50 to a certain extent, thus realizing the oil-proof design of the synchronization component 50.

[0065] Specifically, during the actual use of the range hood 100, a large amount of oil fumes are generated during cooking. These oil fumes need to be discharged to the outside through the fan assembly in the frame assembly 10. Therefore, the oil fumes are basically concentrated in the accommodating cavity 14 of the frame assembly 10.

[0066] The synchronization component 50 is located outside the rack assembly 10, which can, to a certain extent, prevent the oil fumes accumulated inside the rack assembly 10 from adhering to the synchronization component 50, thus realizing the oil-proof design of the synchronization component 50 and ensuring the reliable operation of the synchronization component 50 during its life cycle to a certain extent.

[0067] In some implementations, please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 The cavity assembly 30 has a storage position and an open position. When the cavity assembly 30 is in the storage position, it is stored in the receiving cavity 21. When the cavity assembly 30 is in the open position, it extends out of the receiving cavity 21. The cavity assembly 30 includes a surrounding plate 33. The upper periphery of the surrounding plate 33 is provided with a first limiting part 331, and the lower end of the frame assembly 10 is provided with a second limiting part 13. When the cavity assembly 30 is in the open position, the first limiting part 331 and the second limiting part 13 cooperate to limit the cavity assembly 30.

[0068] In the above embodiments, the operational stability of the cavity assembly 30 can be improved, thereby enhancing the safety and durability of the range hood 100 during use.

[0069] Specifically, the head 20 forms a receiving cavity 21, the lower end of which has an opening 211. The cavity assembly 30 has a retracted position and an open position. In the retracted position, the cavity assembly 30 is retracted into the receiving cavity 21 (e.g., Figure 1 This allows the range hood 100 to save space, and when in the open position, at least a portion of the cavity assembly 30 extends outside the receiving cavity 21 (e.g., Figure 2 This allows the range hood 100 to efficiently absorb cooking fumes.

[0070] The upper periphery of the enclosure 33 is provided with a first limiting part 331, and the lower end of the frame assembly 10 is provided with a second limiting part 13. When the cavity assembly 30 is in the open position, the first limiting part 331 and the second limiting part 13 can limit each other, thereby preventing the cavity assembly 30 from continuing to move downward to a certain extent, thus limiting the cavity assembly 30 and improving the operational stability of the cavity assembly 30.

[0071] The first limiting part 331 and the second limiting part 13 may include, but are not limited to, bosses, grooves, blocks, slots, flanges or limiting ribs.

[0072] exist Figure 6 and Figure 7 In this design, the first limiting part 331 is an outwardly bent edge located at the upper periphery of the enclosure 33, and the second limiting part 13 is a flange edge located within the frame assembly 10. During the lifting and lowering process of the cavity assembly 30, the first limiting part 331 remains within the receiving cavity 14 of the frame assembly 10. When the cavity assembly 30 is in the open position, the bent edge at the upper periphery of the enclosure 33 abuts against the flange edge within the frame assembly 10, thereby limiting the cavity assembly 30.

[0073] In some implementations, please refer to Figure 8 The drive assembly 40 includes a drive member 42 and a transmission mechanism 41. The drive member 42 is connected to the cavity assembly 30 through the transmission mechanism 41. The drive member 42 is used to drive the transmission mechanism 41 to move the cavity assembly 30 up and down. When the cavity assembly 30 moves up and down, the cavity assembly 30 drives the other synchronization mechanisms 51 to move synchronously through at least one synchronization mechanism 51, so that the cavity assembly 30 can move up and down synchronously.

[0074] In the above embodiments, the movement of the drive member 42 can be transmitted to the cavity assembly 30 more precisely, thereby improving the stability of the lifting and lowering of the cavity assembly 30.

[0075] Specifically, the drive member 42 can provide driving force, and the transmission mechanism 41 can convert the movement of the drive member 42 into the up-and-down movement of the cavity assembly 30. During the up-and-down movement of the cavity assembly 30, at least one synchronization mechanism 51 moves with the cavity assembly 30 and drives the other synchronization mechanisms 51 that are meshed with the synchronization mechanism 51 to move synchronously to achieve linkage, so that multiple synchronization mechanisms 51 work together to keep the cavity assembly 30 moving synchronously.

[0076] In one embodiment, the transmission mechanism 41 includes a lead screw (not shown), a movable rod 411, a third connecting plate 412, and a fourth connecting plate 413. A driving member 42 is connected to the lead screw and can drive the lead screw to rotate. The lead screw has an external thread, and the movable rod 411 has an internal thread. The movable rod 411 is sleeved on the lead screw and threadedly connected to the lead screw. The movable rod 411 is connected to the cavity assembly 30 in sequence through the third connecting plate 412 and the fourth connecting plate 413.

[0077] When the drive component 42 drives the lead screw to rotate, the movable rod 411 can move up and down along the lead screw, thereby driving the third connecting plate 412 to move, and then driving the cavity assembly 30 to move up and down through the fourth connecting plate 413, thus realizing the up and down lifting of the cavity assembly 30.

[0078] Optionally, in Figure 8 In one embodiment, the transmission mechanism 41 includes two fourth connecting plates 413, which can be located on the left and right / front and rear sides of the range hood 100 respectively, and are symmetrically arranged along the central axis M of the range hood 100. This allows the driving force of the drive member 42 to be evenly distributed to the cavity assembly 30, improving the stability of the cavity assembly 30 during the lifting and lowering process. In other embodiments, the transmission mechanism 41 includes one fourth connecting plate 413. During the process of the drive member 42 driving the fourth connecting plate 413 to lift and lower the cavity assembly 30, multiple synchronization mechanisms 51 can coordinate with each other to achieve synchronous lifting and lowering of the cavity assembly 30.

[0079] In some implementations, please refer to Figure 1 and Figure 2 The frame assembly 10 is provided with a receiving groove 12, and at least a part of the transmission mechanism 41 and the drive member 42 are provided in the receiving groove 12.

[0080] In the above embodiments, the frame assembly 10 can be made to have a more regular shape, which facilitates the installation and concealment of the range hood 100.

[0081] Specifically, please combine Figure 1 and Figure 2 The front outer surface of the frame assembly 10 is provided with a receiving groove 12. At least a portion of the transmission mechanism 41 and the drive component 42 are disposed in the receiving groove 12, thereby making the front surface of the frame assembly 10 relatively regular with virtually no protruding parts, facilitating the installation and concealment of the range hood 100 in a cabinet. Additionally, the range hood 100 may include a decorative cover, which can be installed over the frame assembly 10 of the range hood 100 to cover the drive component 42 and part of the transmission mechanism 41, thereby improving the aesthetics of the range hood 100. In the event of repair or replacement of the drive component 42 and the transmission mechanism 41, the decorative cover can be directly removed for processing.

[0082] Optionally, the size and shape of the receiving groove 12 can be specifically defined according to the actual situation, and this utility model does not make specific limitations in this regard.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0084] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A range hood, characterized in that, include: A rack assembly, wherein a fan assembly is provided within the rack assembly; The machine head is fixedly connected to the frame assembly, and the machine head is provided with a receiving cavity; A cavity assembly, at least a portion of which is disposed within the receiving cavity, the cavity assembly being vertically and vertically connected to the frame assembly; A drive assembly, which is connected to the cavity assembly and is used to drive the cavity assembly to move up and down; A synchronization component, comprising multiple synchronization mechanisms, each including a rotatably connected linkage and a connecting member, wherein the linkage is connected to the cavity assembly via the connecting member, and the linkages of the multiple synchronization mechanisms are interconnected by meshing, the synchronization component being used to enable the cavity assembly to achieve synchronous lifting and lowering during the lifting and lowering process using the multiple linkages.

2. The range hood according to claim 1, characterized in that, The synchronization mechanism includes a first connecting plate, one end of the connector is rotatably connected to the first connecting plate, the other end of the connector is rotatably connected to the linkage member, the machine head is provided with a through hole, the first connecting plate passes through the through hole and is connected to the cavity assembly, and is movably connected to the frame assembly.

3. The range hood according to claim 2, characterized in that, The synchronization mechanism includes a second connecting plate, which is fixed to the frame assembly, and the first connecting plate and the second connecting plate are movably connected.

4. The range hood according to claim 3, characterized in that, The range hood includes a slide rail assembly, which includes a slide rail and a slider that are slidably connected. One of the slide rail and the slider is disposed on the first connecting plate, and the other is disposed on the second connecting plate.

5. The range hood according to claim 1, characterized in that, The synchronization component includes a mounting component disposed on the frame assembly, and the linkage components of the plurality of synchronization mechanisms are rotatably connected to the mounting component.

6. The range hood according to claim 1, characterized in that, The synchronization component is a component that is symmetrical about the central axis of the range hood.

7. The range hood according to claim 1, characterized in that, The synchronization component is located outside the rack assembly.

8. The range hood according to claim 1, characterized in that, The cavity assembly has a storage position and an open position. When the cavity assembly is in the storage position, it is stored in the receiving cavity. When the cavity assembly is in the open position, it extends out of the receiving cavity. The cavity assembly includes a surrounding plate. A first limiting part is provided at the upper periphery of the surrounding plate, and a second limiting part is provided at the lower end of the frame assembly. When the cavity assembly is in the open position, the first limiting part and the second limiting part cooperate to limit the cavity assembly.

9. The range hood according to claim 1, characterized in that, The drive assembly includes a drive component and a transmission mechanism. The drive component is connected to the cavity assembly through the transmission mechanism. The drive component is used to drive the transmission mechanism to move the cavity assembly up and down. When the cavity assembly moves up and down, the cavity assembly drives the other synchronization mechanisms to move synchronously through at least one synchronization mechanism, so that the cavity assembly can move up and down synchronously.

10. The range hood according to claim 9, characterized in that, The frame assembly is provided with a receiving slot, and at least a portion of the transmission mechanism and the drive member are disposed in the receiving slot.

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