Flap drive mechanism and range hood having the same

Abstract

The utility model provides a kind of flap driving mechanism and range hood with it, belong to kitchen appliance technical field, the flap driving mechanism includes driving component, wiring assembly and oil-proof box, driving component includes mounting seat, motor assembly and driving assembly, oil-proof box has the first installation cavity of installation motor assembly and driving assembly and the second installation cavity of installation wiring assembly, first installation cavity and second installation cavity are mutually isolated, motor assembly is connected between mounting seat and driving assembly, the lead of motor assembly can be inserted second installation cavity and is connected to wiring assembly, the driving end of driving assembly passes through first installation cavity and is connected to flap;Second installation cavity is closed cavity.The utility model can prevent oil pollution driving assembly, the lead of motor assembly and the connecting place of wiring assembly, protect electrical key components.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a flip-plate drive mechanism and a range hood having the same. Background Technology

[0002] As an essential appliance in modern kitchens, the core function of a range hood is to expel cooking fumes outdoors using a fan system. To improve fume extraction efficiency and optimize aesthetics, the flap of a range hood is closed to conceal the air inlet when not in use; when the range hood is operating, the flap is opened via a flap drive assembly (such as a motor and linkage). However, because range hoods are constantly exposed to harsh environments of high temperature, high humidity, and high grease, the flap drive assembly and internal wiring are easily permeated by grease and condensed oil. Grease buildup can lead to mechanical parts jamming, accelerated wear, and even motor overheating and damage; simultaneously, grease adhering to electrical connections can cause decreased insulation performance and short circuits, posing safety hazards. Therefore, there is an urgent need for an oil-resistant structural design for the flap drive assembly of range hoods. Utility Model Content

[0003] The first technical problem this invention aims to solve is to address the problems of existing technologies by providing a flap drive mechanism that not only avoids the problem of oil accumulation in the drive assembly causing mechanical parts to jam and wear to accelerate, but also keeps the motor assembly's leads and the wiring assembly in a sealed wiring cavity to prevent them from being contaminated by oil, thus protecting critical electrical components.

[0004] The second technical problem to be solved by the present invention is to provide a range hood for use in the flap drive mechanism.

[0005] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a flip-board driving mechanism, the flip-board driving mechanism comprising:

[0006] The driving component includes a mounting base, a motor assembly, and a driving assembly. The motor assembly is connected between the mounting base and the driving assembly, and the motor assembly drives the flap to rotate through the driving assembly.

[0007] Wiring assembly, connecting the leads of the motor assembly to the power supply;

[0008] An oil-proof box has a first mounting cavity and a second mounting cavity that are isolated from each other. The motor assembly and the drive assembly are disposed in the first mounting cavity, and the wiring assembly is disposed in the second mounting cavity. The lead wire of the motor assembly can be inserted into the second mounting cavity and connected to the wiring assembly. The drive end of the drive assembly passes through the first mounting cavity and is connected to the flap.

[0009] The second mounting cavity is a sealed cavity.

[0010] According to one embodiment of the present invention, the oil-proof box includes:

[0011] The oil-proof box body includes a first sidewall and a second sidewall, a third sidewall, and a fourth sidewall connected in sequence. The second sidewall, the third sidewall, and the fourth sidewall are all connected to the same side of the first sidewall. The second sidewall and the fourth sidewall are opposite to each other. The third sidewall is connected between the top of the second sidewall and the top of the fourth sidewall. The first sidewall, the second sidewall, the third sidewall, and the fourth sidewall together form a cavity with openings at the bottom and sides. The mounting base is connected to the side opening of the cavity. The second sidewall has a first notch for avoiding the drive assembly. The third sidewall has a second notch for the drive end of the drive assembly to pass through.

[0012] A partition assembly is disposed within the cavity and divides the cavity into a first mounting cavity and a second mounting cavity. The partition assembly includes a first partition disposed opposite to the first sidewall, a second partition disposed opposite to the second sidewall and located between the second sidewall and the fourth sidewall, and a third partition disposed opposite to the third sidewall. The first partition, the second partition, and the third partition are interconnected and disposed near the lead output end of the motor assembly. The first partition, the second partition, the third partition, the second sidewall, the third sidewall, the mounting base, and the lead output end of the motor assembly together form a sealed second mounting cavity.

[0013] Wherein, a clearance gap of height H is formed between the first partition and the first sidewall, and the clearance gap can accommodate part of the structure of the drive assembly.

[0014] According to one embodiment of the present invention, the driving component includes:

[0015] The first link is connected to the drive end of the motor assembly.

[0016] The second link has one end rotatably connected to the end of the first link away from the motor assembly, and the other end is tilted upward and away from the first link.

[0017] The third link has one end rotatably connected to the housing of the motor assembly, and the other end extends away from the first link;

[0018] A fourth link is connected between the second link, the third link, and the flap, wherein the fourth link has a groove on the side away from the flap, and the second link is at least partially inserted into the groove and connected to the top of the fourth link.

[0019] According to one embodiment of the present invention, the fourth link includes:

[0020] An inclined section, the top of which is connected to the other end of the second link, and the bottom of which is connected to the other end of the third link;

[0021] The vertical segment extends downward from the bottom of the inclined segment and is inserted into the clearance space.

[0022] Both the inclined section and the vertical section have lead wire grooves on the side away from the flip plate.

[0023] According to one embodiment of the present invention, the first mounting cavity is provided with a plurality of longitudinally and transversely distributed first reinforcing ribs evenly distributed on the inner wall, and the plurality of first reinforcing ribs are in the shape of a grid.

[0024] A second reinforcing rib is provided at the corner of the first mounting cavity.

[0025] According to one embodiment of the present invention, the oil-proof box is provided with a first buckle on the side near the mounting base, and the mounting base is connected to the first buckle.

[0026] According to one embodiment of the present invention, the motor assembly is provided with an ear plate on the side near the second mounting cavity, and the cavity wall of the second mounting cavity is provided with a limiting hole for limiting the ear plate, and the ear plate is inserted into and bolted to the limiting hole.

[0027] According to one embodiment of the present invention, the flip-plate driving mechanism further includes a reinforcing plate connected between the oil-proof box and the range hood housing. The outer edge of the reinforcing plate is bent toward the oil-proof box to form an annular flange. The oil-proof box is provided with a second buckle corresponding to the annular flange, and the second buckle is engaged with the annular flange.

[0028] According to one embodiment of the present invention, the oil-proof box partially covers the reinforcing plate, and the fourth side wall is provided with a clearance hole to avoid the annular flange.

[0029] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a range hood, the range hood comprising:

[0030] The flap drive mechanism as described in any of the preceding items

[0031] A flap, connected to the drive component;

[0032] The range hood housing includes a back plate and a smoke inlet formed on the front side of the back plate. The flap drive mechanism is connected to the back plate, and the flap is rotatably connected to the front side of the range hood housing for opening and closing the smoke inlet.

[0033] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0034] This invention, by providing an oil-proof box that surrounds the motor assembly, drive assembly, and wiring assembly, not only prevents oil from accumulating at the hinge points inside the drive assembly, thus avoiding mechanical component jamming and accelerated wear, but also keeps the motor assembly's leads and wiring assembly in a sealed wiring cavity, preventing them from being contaminated by oil. This protects critical electrical components and improves product safety. Attached Figure Description

[0035] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0036] Figure 1 This is a schematic diagram of a flap drive mechanism according to an exemplary embodiment.

[0037] Figure 2 This is a schematic diagram of a flap drive mechanism with the mounting base removed, according to an exemplary embodiment.

[0038] Figure 3 This is a schematic diagram showing the connection between the oil-proof box and the reinforcing plate according to an exemplary embodiment.

[0039] Figure 4 This is a schematic diagram of an oil-proof box according to an exemplary embodiment.

[0040] Figure 5 This is a schematic diagram of a drive component according to an exemplary embodiment.

[0041] Figure 6 This is a schematic diagram of the fourth link according to an exemplary embodiment.

[0042] Figure 7 This is a schematic diagram showing the connection between the flap drive mechanism and the smoke machine housing according to an exemplary embodiment. Attached image description:

[0044] 1. Drive component; 11. Mounting base; 12. Motor assembly; 121. Ear plate; 13. Drive assembly; 131. First connecting rod; 132. Second connecting rod; 133. Third connecting rod; 134. Fourth connecting rod; 1341. Groove; 13411. Positioning rib; 1342. Inclined section; 1343. Vertical section; 1344. Lead wire groove;

[0045] 2. Wiring components;

[0046] 3. Oil-proof box; 301. First mounting cavity; 302. Second mounting cavity; 303. Clearance gap; 31. Oil-proof box body; 311. First side wall; 312. Second side wall; 3121. First notch; 313. Third side wall; 3131. Second notch; 314. Fourth side wall; 315. First reinforcing rib; 316. Second reinforcing rib; 317. Clearance hole; 32. Partition assembly; 321. First partition; 322. Second partition; 323. Third partition; 33. First buckle; 34. Limiting hole; 35. Second buckle;

[0047] 4. Reinforcing plate; 41. Circular flange;

[0048] 5. Cables;

[0049] 100. Range hood housing; 101. Back panel; 102. Smoke inlet. Detailed Implementation

[0050] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0051] The terms “a,” “one,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “include” and “have” are used to indicate an open-ended meaning of inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0052] This utility model embodiment provides a flap driving mechanism, such as Figure 1-7As shown, the flap drive mechanism includes a drive component 1, a wiring assembly 2, and an oil-proof box 3. The drive component 1 includes a mounting base 11, a motor assembly 12, and a drive assembly 13. The motor assembly 12 is connected between the mounting base 11 and the drive assembly 13, and the motor assembly 12 drives the flap to rotate through the drive assembly 13. The wiring assembly 2 connects the lead wire of the motor assembly 12 to the power supply. The oil-proof box 3 has a first mounting cavity 301 and a second mounting cavity 302 that are isolated from each other. The motor assembly 12 and the drive assembly 13 are disposed in the first mounting cavity 301, and the wiring assembly 2 is disposed in the second mounting cavity 302. The lead wire of the motor assembly 12 can be inserted into the second mounting cavity 302 and connected to the wiring assembly 2. The drive end of the drive assembly 13 passes through the first mounting cavity 301 and is connected to the flap. The second mounting cavity 302 is a sealed cavity. The oil-proof box 3 in this application adopts an integrated molding structure, with a completely isolated first mounting cavity 301 and second mounting cavity 302 inside. The first mounting cavity 301 is used to install the motor assembly 12 and the drive assembly 13, and the second mounting cavity 302 is used to install the wiring assembly 2. That is, the oil-proof box 3 can surround the outer periphery of the motor assembly 12, the drive assembly 13, and the wiring assembly 2, preventing oil dripping from the air handling unit above it from contaminating the wiring assembly 2 and the drive assembly 13. In particular, the mounting base 11, the outer end face of the motor assembly 12, and the second mounting cavity 302 together form a sealed wiring cavity, which can protect the leads of the motor assembly 12 and the wiring assembly 2 from oil contamination, thus protecting the critical electrical components. At the same time, the first mounting cavity 301 can also protect the drive assembly 13, preventing oil from accumulating at the hinges inside the drive assembly 13, which could lead to mechanical parts jamming and accelerated wear. This application effectively blocks the migration path of oil through a dual-chamber physical isolation design, providing a safety protection function.

[0053] In a preferred embodiment of this utility model, such as Figure 1-4The oil-proof box 3 shown includes an oil-proof box body 31 and a partition assembly 32. The oil-proof box body 31 includes a first side wall 311 and a second side wall 312, a third side wall 313, and a fourth side wall 314 connected in sequence. The second side wall 312, the third side wall 313, and the fourth side wall 314 are all connected to the same side of the first side wall 311. The second side wall 312 and the fourth side wall 314 are opposite to each other. The third side wall 313 is connected between the top of the second side wall 312 and the top of the fourth side wall 314. The first side wall 311, the second side wall 312, the third side wall 313, and the fourth side wall 314 together form a cavity with openings at the bottom and sides. The mounting base 11 is connected to the side opening of the cavity. The second side wall 312 is provided with a first notch 3121 for avoiding the drive assembly 13. The third side wall 313 is provided with a second notch 3131 for the drive end of the drive assembly 13 to pass through. The oil-proof box 3 of this application has openings on both the bottom and the side, which facilitates quick connection with existing flap drive mechanisms without altering the structure of the existing flap drive mechanism. Simply placing the oil-proof box 3 over the front of the existing flap drive mechanism achieves the oil-proof effect, making it widely applicable and easy to install. Furthermore, the first notch 3121 and the second notch 3131 on the oil-proof box 3 provide clearance for the movement of the drive assembly 13. When the range hood finishes operating, the drive end of the drive rod 132 returns from the first notch 3121 to the first mounting cavity 301, and the side away from the drive end approaches and inserts into the second notch 3131. The drive rod 132 then drives the flap to rotate towards the range hood housing 100 to close the smoke inlet 102.

[0054] The partition assembly 32 is disposed in the cavity and divides the cavity into a first mounting cavity 301 and a second mounting cavity 302. The partition assembly 32 includes a first partition 321 disposed opposite to the first side wall 311, a second partition 322 disposed opposite to the second side wall 312 and located between the second side wall 312 and the fourth side wall 314, and a third partition 323 disposed opposite to the third side wall 313. The first partition 321, the second partition 322, and the third partition 323 are interconnected and disposed near the lead output end of the motor assembly 12. The first partition 321, the second partition 322, the third partition 323, the second side wall 312, the third side wall 313, the mounting base 11, and the lead output end of the motor assembly 12 together form a sealed second mounting cavity 302. A clearance gap 303 with a height of H is formed between the first partition 321 and the first side wall 311. The clearance gap 303 can accommodate part of the structure of the drive assembly 13. When the range hood is started, the driving end of the drive rod 132 moves away from the first notch 3121 and pushes the flap to rotate outward; the structure of the oil-proof box 3, while ensuring the driving function of the drive assembly 13, can also fully surround the outer periphery of the motor assembly 12, the drive assembly 13 and the wire assembly 2, so as to achieve the technical effect of preventing oil stains.

[0055] In a preferred embodiment of this utility model, such as Figure 1 , 2 The drive assembly 13 shown in Figures 5 and 6 includes a linkage mechanism 13, which comprises a first link 131, a second link 132, a third link 133, and a fourth link 134. The first link 131 is connected to the drive end of the motor assembly 12. One end of the second link 132 is rotatably connected to the end of the first link 131 away from the motor assembly 12, and the other end of the second link 132 is inclined upwards and away from the first link 131. One end of the third link 133 is rotatably connected to the housing of the motor assembly 12, and the other end of the third link 133 extends away from the first link 131. The fourth link 134 connects the second link 132, the third link 133, and the flap, and is used to push the flap to rotate. The linkage mechanism 13, composed of the first link 131, the second link 132, the third link 133, and the fourth link 134, is more stable, has a more precise trajectory, and has stronger rigidity and stability, ensuring that the flap opens or closes smoothly.

[0056] The fourth connecting rod 134 has a groove 1341 on the side away from the flap. The second connecting rod 132 is at least partially inserted into the groove 1341 and connected to the top of the fourth connecting rod 134. This allows the fourth connecting rod 134 to block oil stains from the smoke inlet 102, preventing oil stains from directly entering the first connecting rod 131 and the second connecting rod 132, thus achieving oil prevention. Furthermore, the groove wall of the groove 1341 can also be provided with positioning ribs 13411 located on both sides of the second connecting rod 132. These positioning ribs 13411 not only limit the axial movement range of the second connecting rod 132 but also increase the mechanical strength of the groove 1341.

[0057] In a preferred embodiment of this utility model, such as Figure 1 , 2 The fourth link 134 shown in Figures 5 and 6 includes an inclined section 1342 and a vertical section 1343 extending downward from the bottom of the inclined section 1342. The top of the inclined section 1342 is connected to the other end of the second link 132, and the lower part of the inclined section 1342 is connected to the other end of the third link 133; the vertical section 1343 is inserted into the clearance 303; wherein, both the inclined section 1342 and the vertical section 1343 are provided with lead wire grooves 1344 on the side away from the flap. The fourth link 134, i.e., the inclined section 1342, which is exposed outside the oil-proof box 3, is easily contaminated by oil stains sucked in by the smoke inlet 102. However, due to the inclined structure of the inclined section 1342, the oil stains will move downward along the inclined section 1342 to the vertical section 1343. The vertical section 1343 is used to guide the oil stains out of the first mounting cavity 302 and the clearance 303, thereby achieving the effect of preventing oil stains and ensuring the mechanical performance of the drive assembly 13.

[0058] In addition, this application also provides a lead wire groove 1344 on the side of the inclined section 1342 and the vertical section 1343 away from the flip plate. This design not only reduces the weight of the drive assembly 13, but also prevents oil from contaminating the cable 5 in the lead wire groove 1344.

[0059] In a preferred embodiment of this utility model, such as Figure 1-4 The first mounting cavity 301 shown has multiple longitudinally and transversely distributed first reinforcing ribs 315 evenly distributed on its inner wall, forming a grid pattern. Second reinforcing ribs 316 are provided at the corners of the first mounting cavity 301. Since the first mounting cavity 301 needs to accommodate the motor assembly 12 and the drive assembly 13, and is relatively long, the grid layout of the first reinforcing ribs 315 enhances the overall deformation resistance of the cavity, preventing deformation of the shell due to vibration of the drive assembly 13 or external impact. The second reinforcing ribs 316 strengthen the corner areas of the first mounting cavity 301 where stress is concentrated, avoiding the risk of cracking. By setting multiple first reinforcing ribs 315 and second reinforcing ribs 316, the structural strength of the entire first mounting cavity 301 can be increased, ensuring that the oil-proof box 3 is not easily deformed after installation, thus improving the user experience.

[0060] In a preferred embodiment of this utility model, such as Figure 1-4 The oil-proof box 3 shown has a first snap-fit ​​33 on the side near the mounting base 11, and the mounting base 11 is connected to the first snap-fit ​​33. The first snap-fit ​​33 is an elastic snap-fit, and the mounting base 11 and the oil-proof box 3 can be installed by simply deforming the snap-fit ​​through elasticity. This tool-free assembly eliminates the need for screws and other fasteners, reduces assembly complexity, and facilitates maintenance of the motor assembly 12 or the wiring assembly 2. In addition, the interference fit of the snap-fit ​​ensures that the oil-proof box 3 fits tightly with the mounting base 11, preventing oil from seeping into the wiring cavity from the joint.

[0061] In a preferred embodiment of this utility model, such as Figure 1-4 The motor assembly 12 shown has an ear plate 121 on the side near the second mounting cavity 302. The cavity wall of the second mounting cavity 302 has a limiting hole 34 for limiting the ear plate 121. The ear plate 121 is inserted into and bolted to the limiting hole 34. The connection between the ear plate 121 and the limiting hole 34 can limit the front and rear movement of the oil-proof box 3. In addition, in order to ensure that a sealed wiring cavity is formed between the mounting base 11, the outer shell of the motor assembly 12, and the second mounting cavity 302, it is necessary to determine the relative positions of the mounting base 11 and the motor assembly 12 with respect to the second mounting cavity 302. Since the motor assembly 12 is bolted to the mounting base 11, the screw connection between the ear plate 121 on the motor assembly 12 and the limiting hole 34 can also ensure that a closed area is formed between it and the second mounting cavity 302, preventing oil from entering.

[0062] In a preferred embodiment of this utility model, such as Figure 1-5The flap drive mechanism shown also includes a reinforcing plate 4 connected between the oil-proof box 3 and the range hood housing 100. The outer edge of the reinforcing plate 4 is bent towards the oil-proof box 3 to form an annular flange 41. The oil-proof box 3 is provided with a second buckle 35 corresponding to the annular flange 41, and the second buckle 35 is engaged with the annular flange 41. Through the rigid transition of the reinforcing plate 4, the vibration load of the flap drive mechanism is evenly transmitted to the range hood housing 100, avoiding local dents or cracks in the range hood housing 100. The annular flange 41 can further enhance the bending stiffness of the reinforcing plate 4, prevent deformation of the reinforcing plate 4, and extend the service life of the flap drive mechanism. During installation, the second buckle 35 is engaged with the annular flange 41 to connect the oil-proof box 3 and the reinforcing plate 4, thereby limiting the left and right movement of the oil-proof box 3. The second buckle 35 can press the contact surface between the oil-proof box 3 and the reinforcing plate 4 to reduce gaps and prevent oil from contaminating the motor assembly 12 and the drive assembly 13, while also facilitating installation and maintenance.

[0063] In a preferred embodiment of this utility model, such as Figure 1-5 The oil-proof box shown is partially covered by a reinforcing plate 4, and the fourth side wall 314 is provided with a clearance hole 317 to avoid the annular flange 41. Figure 1 As shown, the surface area of ​​the reinforcing plate 4 is larger than the projected area of ​​the oil-proof box 3 on the mounting plate 4. This ensures that the reinforcing plate 4 and its annular flange 41 prevent oil stains on the back plate 101 from entering the interior of the oil-proof box 3. The oil-proof box 3 partially covers the reinforcing plate 4, avoiding complete overlap and reducing the overall thickness or space occupied. The clearance hole 317 is only for a localized area of ​​the annular flange 41 and does not affect the overall oil-proof performance. Furthermore, the clearance hole 317 and the annular flange 41 serve as installation guides, reducing the risk of misalignment. Simultaneously, the clearance hole 317 provides space for the annular flange 41 to move slightly during vibration, preventing hard contact that could lead to wear or abnormal noise. This design fully embodies the balance between space, function, and cost, making it ideal for scenarios where the interior of the range hood housing 100 requires a compact layout while maintaining both sealing and strength.

[0064] This utility model embodiment provides a range hood, such as Figure 7As shown, the range hood includes a flap drive mechanism, a flap, and a range hood housing 100 as described above. The range hood housing 100 includes a back plate 101 and a smoke inlet 102 formed on the front side of the back plate 101. The flap is rotatably connected to the front side of the range hood housing 100. The flap drive mechanism is connected to the flap and the back plate 101 and is used to push the flap to rotate to open and close the smoke inlet 102. In this embodiment, the range hood, by adding an oil-proof box 3, not only physically isolates electrical components such as motors and wiring terminals from the oil mist environment, avoiding short circuits, leakage, or poor contact caused by oil penetration, but also prevents oil from adhering to the moving parts of the flap drive mechanism, reducing increased friction, abnormal noise, or jamming caused by oil buildup. The oil-proof box 3 adopts a quick-release structure, which can be removed for cleaning without tools, solving the pain point of traditional range hoods where it is difficult to reach oil stains inside, improving the cleaning and maintenance experience, and extending product life.

[0065] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0066] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0067] In the description of this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. 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.

[0068] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flap drive mechanism, characterized in that, include: The driving component (1) includes a mounting base (11), a motor assembly (12) and a driving assembly (13). The motor assembly (12) is connected between the mounting base (11) and the driving assembly (13), and the motor assembly (12) drives the flap to rotate through the driving assembly (13). Wiring assembly (2) connects the leads of the motor assembly (12) to the power supply; The oil-proof box (3) has a first mounting cavity (301) and a second mounting cavity (302) that are isolated from each other. The motor assembly (12) and the drive assembly (13) are disposed in the first mounting cavity (301). The wiring assembly (2) is disposed in the second mounting cavity (302). The lead wire of the motor assembly (12) can be inserted into the second mounting cavity (302) and connected to the wiring assembly (2). The drive end of the drive assembly (13) passes through the first mounting cavity (301) and is connected to the flap. The second mounting cavity (302) is a sealed cavity.

2. The flip-board driving mechanism according to claim 1, characterized in that, The oil-proof box (3) includes: The oil-proof box body (31) includes a first sidewall (311) and a second sidewall (312), a third sidewall (313), and a fourth sidewall (314) connected in sequence. The second sidewall (312), the third sidewall (313), and the fourth sidewall (314) are all connected to the same side of the first sidewall (311). The second sidewall (312) and the fourth sidewall (314) are opposite to each other. The third sidewall (313) is connected to the top of the second sidewall (312) and the fourth sidewall (314). Between the top of the first sidewall (311), the second sidewall (312), the third sidewall (313), and the fourth sidewall (314) together form a cavity with openings at the bottom and sides. The mounting base (11) is connected to the side opening of the cavity. The second sidewall (312) is provided with a first notch (3121) for avoiding the drive assembly (13). The third sidewall (313) is provided with a second notch (3131) for the drive end of the drive assembly (13) to pass through. A partition assembly (32) is disposed in the cavity and divides the cavity into a first mounting cavity (301) and a second mounting cavity (302). The partition assembly (32) includes a first partition (321) disposed opposite to the first side wall (311), a second partition (322) disposed opposite to the second side wall (312) and located between the second side wall (312) and the fourth side wall (314), and a third partition (323) disposed opposite to the third side wall (313). The first partition (321), the second partition (322), and the third partition (323) are interconnected and disposed near the lead output end of the motor assembly (12). The first partition (321), the second partition (322), the third partition (323), the second side wall (312), the third side wall (313), the mounting base (11), and the lead output end of the motor assembly (12) together form a sealed second mounting cavity (302). The first partition (321) and the first sidewall (311) form a clearance (303) with a height of H, and the clearance (303) can accommodate part of the structure of the drive assembly (13).

3. The flip-plate driving mechanism according to claim 2, characterized in that, The driving component (13) includes: The first link (131) is connected to the drive end of the motor assembly (12); The second link (132) is rotatably connected at one end to the end of the first link (131) away from the motor assembly (12), and the other end is tilted upward and away from the first link (131); The third link (133) is rotatably connected at one end to the housing of the motor assembly (12), and at the other end extends away from the first link (131); A fourth link (134) is connected between the second link (132), the third link (133) and the flap, wherein the fourth link (134) has a groove (1341) on the side away from the flap, and the second link (132) is at least partially inserted into the groove (1341) and connected to the top of the fourth link (134).

4. The flip-board driving mechanism according to claim 3, characterized in that, The fourth link (134) includes: An inclined section (1342) is connected at its top to the other end of the second link (132) and at its bottom to the other end of the third link (133); The vertical segment (1343) is formed by extending downward from the bottom of the inclined segment (1342), and the vertical segment (1343) is inserted into the clearance gap (303); The inclined section (1342) and the vertical section (1343) are both provided with lead wire grooves (1344) on the side away from the flap.

5. The flip-board driving mechanism according to claim 1, characterized in that, The inner wall of the first mounting cavity (301) is evenly distributed with multiple longitudinal and transverse first reinforcing ribs (315), and the multiple first reinforcing ribs (315) are in the shape of a grid. A second reinforcing rib (316) is provided at the corner of the first mounting cavity (301).

6. The flip-plate driving mechanism according to claim 2, characterized in that, The oil-proof box (3) has a first buckle (33) on the side near the mounting base (11), and the mounting base (11) is connected to the first buckle (33).

7. The flip-plate driving mechanism according to claim 2, characterized in that, The motor assembly (12) has an ear plate (121) on the side near the second mounting cavity (302). The cavity wall of the second mounting cavity (302) has a limiting hole (34) for limiting the ear plate (121). The ear plate (121) is inserted into and bolted to the limiting hole (34).

8. The flip-plate driving mechanism according to claim 2, characterized in that, It also includes a reinforcing plate (4) connecting the oil-proof box (3) and the range hood housing (100). The outer edge of the reinforcing plate (4) is bent toward the oil-proof box (3) to form an annular flange (41). The oil-proof box (3) is provided with a second buckle (35) corresponding to the annular flange (41). The second buckle (35) is engaged with the annular flange (41).

9. The flip-plate driving mechanism according to claim 8, characterized in that, The oil-proof box (3) partially covers the reinforcing plate (4), and the fourth side wall (314) is provided with a clearance hole (317) to avoid the annular flange (41).

10. A range hood, characterized in that, include: The flap drive mechanism as described in any one of claims 1-9, A flap is connected to the drive assembly (13); The range hood housing (100) includes a back plate (101) and a smoke inlet (102) formed on the front side of the back plate (101). The flap drive mechanism is connected to the back plate (101), and the flap is rotatably connected to the front side of the range hood housing (100) for opening and closing the smoke inlet (102).

Images