Movable panel assembly and range hood with same

Abstract

The utility model discloses a movable panel assembly and a range hood with the movable panel assembly, and the movable panel assembly comprises a range hood main body which is provided with a mounting cavity, and the wall surface of the mounting cavity is connected with a first limiting piece and a second limiting piece; the number of the guide assemblies is two, each guide assembly comprises a fixed part and a sliding part, each sliding part is connected with a connecting plate, and a synchronous rod is connected between the two connecting plates; the driving mechanism is used for driving the two connecting plates to slide along the guide assembly; the movable panel is connected to the range hood main body in a sliding manner and is connected with the connecting plate; wherein the movable panel is provided with a first position for closing an exhaust inlet of the range hood and a second position for opening the exhaust inlet of the range hood, and when the movable panel is at the first position, the first limiting piece extrudes the connecting plate backwards, and the second limiting piece limits the synchronous rod, so that the connecting plate cannot tilt in the front-back direction. According to the movable panel assembly and the range hood with the movable panel assembly, the exhaust inlet can be closed in place.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to a movable panel assembly and a range hood having the same. Background Technology

[0002] There is a range hood with a movable panel that slides along the front panel of the range hood body to open or close the air intake. The movable panel is slidably connected to the front panel of the range hood body via a guide assembly. To ensure that the sliding part of the guide assembly can slide along the fixed part, there is a gap between the sliding part and the fixed part. During the production and sales of the range hood, it was found that when the movable panel closes the air intake, it tends to tilt outward from the bottom to the front panel, pulling the sliding part of the guide assembly against the fixed part. This causes the upper edge of the guide assembly to tilt outward when the movable panel closes the air intake, leading users to believe that the movable panel has not closed the air intake properly, which can easily lead to customer complaints. Utility Model Content

[0003] The purpose of this utility model is to provide a movable panel assembly and a range hood having the same, which solves the above-mentioned technical problems.

[0004] A movable panel assembly for a range hood, comprising:

[0005] The main body of the range hood has an installation cavity, and a first limiting member and a second limiting member are connected to the wall of the installation cavity;

[0006] The guide assembly consists of two components, which are located within the mounting cavity. Each guide assembly includes a fixing component and a sliding component. Each sliding component is connected to a connecting plate, and a synchronizing rod connects the two connecting plates.

[0007] A drive mechanism, located within the mounting cavity, is used to drive the two connecting plates to slide along the guide assembly;

[0008] A movable panel that is slidably connected to the main body of the range hood and connected to the connecting plate;

[0009] The movable panel has a first position with the air intake of the range hood closed and a second position with the air intake of the range hood open. In the first position, the first limiting member presses the connecting plate backward, and the second limiting member limits the synchronizing rod, so that the connecting plate cannot tilt in the front and back direction.

[0010] According to one embodiment of the present invention, the first limiting member is provided with a first protrusion and a second protrusion, and there is a recess between the first protrusion and the second protrusion. When the movable panel is in the first position, the first protrusion and the second protrusion simultaneously support the sliding member of the guide assembly; when the movable panel is in the second position, the first protrusion supports the sliding member of the guide assembly.

[0011] According to one embodiment of the present invention, the driving mechanism includes a driving member, an active component, a driven component, and a synchronous shaft. The output end of the driving member is drivenly connected to the active component. The active component has a first output end and a second output end. The first output end is drivenly connected to one end of the synchronous shaft, and the second output end is drivenly connected to a connecting plate on the corresponding side. The driven component has a third input end and a fourth output end. The third input end is drivenly connected to the other end of the synchronous shaft, and the fourth output end is drivenly connected to the connecting plate on the corresponding side. The synchronous shaft is rotatably connected within the mounting cavity.

[0012] According to one embodiment of the present invention, the active component includes a first link and a second link. The output end of the driving member is connected to the first end of the first link, the second end of the first link is connected to a synchronous shaft, the first end of the second link forms a first output end connected to one end of the synchronous shaft, and the second end of the second link forms a second output end connected to a connecting plate on the corresponding side. The driven component includes a third link and a fourth link. The first end of the third link forms a third input end connected to the other end of the synchronous shaft, the second end of the third link is connected to the first end of the fourth link, and the second end of the fourth link is connected to a connecting plate on the corresponding side.

[0013] According to one embodiment of the present invention, an installation plate is provided in the installation cavity. There are two installation plates, which are symmetrically arranged in the installation cavity, and the two ends of the synchronous shaft are respectively rotatably connected to the two installation plates.

[0014] According to one embodiment of the present invention, a limiting buckle is connected to the lower end of the mounting plate, the limiting buckle forming a second limiting member, and the limiting buckle having a limiting groove adapted to the synchronizing rod.

[0015] This utility model also provides a range hood that uses the above-mentioned movable panel assembly, including an inner air box and an outer air box. The inner air box is located in the mounting cavity of the range hood body, and the outer air box is located above the range hood body and communicates with the inner air box. An air intake is provided on the front side plate of the range hood body, and a drive mechanism drives the movable panel to slide along the front side plate to open or close the air intake.

[0016] According to one embodiment of the present invention, the front side plate is provided with a clearance groove, and the movable panel is provided with a connector. The connector extends into the mounting cavity through the clearance groove and connects with the connecting plate.

[0017] According to one embodiment of the present invention, a fixed panel is also included. The fixed panel is disposed on the front side of the front panel and above the air inlet. When the movable panel closes the air inlet, the lower edge of the fixed panel abuts against the upper edge of the movable panel, and the fixed panel and the movable panel are located on the same plane.

[0018] According to one embodiment of the present invention, the front panel is divided into an upper part and a lower part, with the air intake located in the lower part. The lower part is recessed towards the rear of the main body of the range hood relative to the upper part, forming a moving gap between the movable panel and the front panel.

[0019] Compared with the prior art, the movable panel assembly of this utility model and the range hood having the same have at least the following advantages:

[0020] The present invention relates to a movable panel assembly and a range hood having the same. A first limiting member and a second limiting member are connected to the wall of the mounting cavity. When the movable panel closes the air intake of the range hood, the first limiting member presses the connecting plate backward, causing the upper end of the movable panel to tilt backward and close the air intake. At the same time, because the second limiting member limits the synchronizing rod, the lower end of the movable panel cannot be pried outward, which ensures that the distance from the upper and lower ends of the movable panel to the plane where the air intake is located is equal, so as to close the air intake in place. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the smoke hood of this utility model;

[0022] Figure 2 This is a structural diagram of the range hood of this utility model after the movable panel has been removed;

[0023] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0024] Figure 4 This is a cross-sectional view of the smoke hood of this utility model;

[0025] Figure 5 for Figure 4 Enlarged view of section B;

[0026] Figure 6 This is a structural diagram of the range hood of this utility model after the back panel has been removed, showing the state with the air intake open;

[0027] Figure 7 for Figure 6 Enlarged view of section C;

[0028] Figure 8 for Figure 6 Enlarged view of section D in the middle;

[0029] Figure 9 This is a structural diagram of the range hood of this utility model after the back panel has been removed, showing the state in which the air intake is closed;

[0030] Figure 10 for Figure 9 Enlarged view of section E in the middle;

[0031] Figure 11 for Figure 9 Enlarged view of section F in the middle.

[0032] In the diagram: 1. Main body of the range hood; 11. Mounting plate; 111. Limiting buckle; 12. Front side plate; 121. Clearance groove; 13. Air intake; 14. First limiting component; 2. Guide assembly; 21. Connecting plate; 22. Synchronizing rod; 3. Drive mechanism; 31. Drive component; 32. Active assembly; 321. First connecting rod; 322. Second connecting rod; 323. Connecting rod; 33. Driven assembly; 331. Third connecting rod; 332. Fourth connecting rod; 34. Synchronizing shaft; 4. Moving panel; 5. Inner air box; 6. Outer air box; 7. Fixed panel.

[0033] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0038] This utility model discloses a movable panel assembly for a range hood. Please refer to [link / reference]. Figures 1 to 8 ,include:

[0039] The main body 1 of the range hood has an installation cavity, and a first limiting member 14 and a second limiting member are connected to the wall of the installation cavity;

[0040] There are two guide components 2, which are located in the mounting cavity. Each guide component 2 includes a fixing part and a sliding part. Each sliding part is connected to a connecting plate 21. A synchronizing rod 22 is connected between the two connecting plates 21.

[0041] The drive mechanism 3, which is located in the mounting cavity, is used to drive the two connecting plates 21 to slide along the guide assembly 2;

[0042] The movable panel 4 is slidably connected to the main body 1 of the range hood and connected to the connecting plate 21;

[0043] The movable panel 4 has a first position with the air intake 13 of the range hood closed and a second position with the air intake 13 of the range hood open. In the first position, the first limiting member 14 presses the connecting plate 21 backward, and the second limiting member limits the synchronizing rod 22, so that the connecting plate 21 cannot tilt in the front and back direction.

[0044] In this embodiment, taking the user's position when using the range hood as a reference, the movable panel 4 faces the user, and the air intake 13 of the range hood is located on the rear side of the movable panel 4. The connecting plate 21 and the synchronizing rod 22 are both located on the rear side of the movable panel 4. That is, in this embodiment, the first limiting member 14 pressing the connecting plate 21 backward means that the first limiting member 14 presses the connecting plate 21 away from the user.

[0045] During the use of the range hood, the drive mechanism 3 is activated, which drives the two connecting plates 21 to slide along the guide assembly 2. With the connection of the two connecting plates 21, the moving panel 4 is driven to slide on the main body 1 of the range hood, so as to open or close the air intake 13 of the range hood.

[0046] The wall of the mounting cavity is connected to a first limiting member 14 and a second limiting member. When the movable panel 4 closes the air intake 13 of the range hood, the first limiting member 14 presses the connecting plate 21 backward, causing the upper end of the movable panel 4 to tilt backward, that is, to tilt away from the user's location and close the air intake 13. Since the second limiting member limits the synchronizing rod 22, the lower end of the movable panel 4 cannot be pried outward. This ensures that the distance from the upper and lower ends of the movable panel 4 to the plane where the air intake 13 is located is equal. This improves the problem in the prior art where the upper edge of the guide component 2 tilts outward when the movable panel 4 closes the air intake 13, making the user think that the movable panel 4 has not closed the air intake 13 properly, which is prone to causing customer complaints.

[0047] For the movable panel assembly of this utility model, please refer to [link / reference]. Figures 4 to 11 The first limiting member 14 is provided with a first protrusion and a second protrusion, and there is a recess between the first protrusion and the second protrusion. When the movable panel 4 is in the first position, the first protrusion and the second protrusion simultaneously support the sliding member of the guide assembly 2; when the movable panel 4 is in the second position, the first protrusion supports the sliding member of the guide assembly 2.

[0048] Driven indirectly by the drive mechanism 3, the moving panel 4 slides on the main body 1 of the range hood, so that the moving panel 4 reaches the first position and closes the air intake 13. The first limiting member 14 supports the sliding member of the guide assembly through the first protrusion and the second protrusion. The sliding member has a large force range and is not easily deformed. At this time, the second limiting member limits the synchronous rod 22, so that the connecting plate 21 cannot be tilted in the front and back directions.

[0049] Driven by the drive mechanism 3, the moving panel 4 is indirectly driven to slide in the opposite direction on the main body 1 of the range hood. When the moving panel 4 reaches the first position and opens the air intake 13, the first protrusion supports the sliding member, so that the sliding member is still connected to the first limiting member 14, preventing the sliding member from detaching from the first limiting member 14.

[0050] For the movable panel assembly of this utility model, please refer to [link / reference]. Figures 6 to 11 The drive mechanism 3 includes a drive member 31, an active component 32, a driven component 33, and a synchronous shaft 34. The output end of the drive member 31 is connected to the active component 32. The active component 32 has a first output end and a second output end. The first output end is connected to one end of the synchronous shaft 34, and the second output end is connected to the corresponding connecting plate 21. The driven component 33 has a third input end and a fourth output end. The third input end is connected to the other end of the synchronous shaft 34, and the fourth output end is connected to the corresponding connecting plate 21. The synchronous shaft 34 is rotatably connected within the mounting cavity.

[0051] In this embodiment, each connecting plate 21 has an "L"-shaped plate structure, with one straight arm end connected to the corresponding sliding member and the other straight arm end connected to the synchronizing rod 22.

[0052] When the two connecting plates 21 are driven by the drive mechanism 3 to slide along the guide assembly 2, so as to open or close the air intake 13 of the range hood through the moving panel 4, the drive component 31 is activated to drive the active component 32 to perform related actions. The active component 32 drives the synchronous shaft 34 to rotate through its first output end. Then, under the transmission of the synchronous shaft 34 and the connection of the third input end of the driven component 33, the driven component 33 is driven to perform related actions. At the same time, the active component 32 drives one of its connecting plates 21 and the sliding member connected to the connecting plate 21 on the corresponding side to slide through its second output end. The driven component 33 drives the other connecting plate 21 and the sliding member connected to the other connecting plate 21 on the corresponding side to slide synchronously and in the same direction through its fourth output end. This drives the moving panel 4 to move, so as to open or close the air intake 13 of the range hood.

[0053] Among them, the driving component 31 can be a linear drive mechanism such as an electric cylinder, a pneumatic cylinder, or a ball screw.

[0054] For the movable panel assembly of this utility model, please refer to [link / reference]. Figures 6 to 11 The active component 32 includes a first link 321 and a second link 322. The output end of the drive member 31 is connected to the first end of the first link 321, and the second end of the first link 321 is connected to the synchronous shaft 34. The first end of the second link 322 forms a first output end connected to one end of the synchronous shaft 34, and the second end of the second link 322 forms a second output end connected to the corresponding side connecting plate 21. The driven component 33 includes a third link 331 and a fourth link 332. The first end of the third link 331 forms a third input end connected to the other end of the synchronous shaft 34, and the second end of the third link 331 is connected to the first end of the fourth link 332. The second end of the fourth link 332 is connected to the corresponding side connecting plate 21.

[0055] For details in this embodiment, please refer to [link / reference]. Figure 8 and Figure 11 ,in, Figure 8 Shown as Figure 6 A magnified view of part D shows the state where the air intake vent 13 is open with the movable panel 4. Figure 11 Shown as Figure 9A partial enlarged view of section F shows the state where the movable panel 4 closes the air intake vent 13. The output end of the drive unit 31 is rotatably connected to the first end of the first connecting rod 321 via a first rotating shaft (not shown in the figure). A second rotating shaft (not shown in the figure) is connected to both the second end of the first connecting rod 321 and the first end of the second connecting rod 322. The two ends of the second rotating shaft are fixedly connected to the second end of the first connecting rod 321 and the first end of the second connecting rod 322, respectively. The active component 32 also includes a connecting rod 323, one end of which is rotatably connected to the second rotating shaft, and the other end is fixedly connected to one end of the synchronous shaft 34. The second end of the second connecting rod 322 is rotatably connected to the connecting plate 21 on the corresponding side via a third rotating shaft (not shown in the figure).

[0056] Please refer to the details. Figure 7 and Figure 10 ,in, Figure 7 Shown as Figure 6 A magnified view of section C shows the state where the air intake vent 13 is open with the movable panel 4 in operation. Figure 10 Shown as Figure 9 A partial enlarged view of section D shows the state where the movable panel 4 closes the air intake 13. The first end of the third link 331 is fixedly connected to the other end of the synchronous shaft 34, and the second end is rotatably connected to the first end of the fourth link 332 via the fourth rotating shaft (not shown in the figure). The second end of the fourth link 332 is rotatably connected to the connecting plate 21 on the corresponding side via the fifth rotating shaft (not shown in the figure).

[0057] When closing the air intake vent 13, which is in the open position, via the movable panel 4, please refer to the following for details. Figures 6 to 8 When the output end of the drive unit 31 retracts, the first connecting rod 321 is pulled, and the connecting rod 323 rotates clockwise around the synchronous shaft 34. At the same time, the synchronous shaft 34 rotates clockwise, causing the second connecting rod 322 to move synchronously toward the drive unit 31. During this process, the clockwise rotating synchronous shaft 34 drives the third connecting rod 331 to rotate clockwise, causing the fourth connecting rod 332 to move synchronously toward the direction of the drive unit 31. Thus, driven by the second connecting rod 322 and the fourth connecting rod 332, the two connecting plates 21 move synchronously toward the direction of the drive unit 31 until the moving panel 4 closes the air intake 13.

[0058] When opening the closed air intake vent 13 via the movable panel 4, please refer to the following for details. Figures 9 to 11The output end of the drive component 31 extends, the first connecting rod 321 is pushed, and the connecting rod 323 rotates counterclockwise around the synchronous shaft 34. At the same time, the synchronous shaft 34 rotates counterclockwise, causing the second connecting rod 322 to move synchronously away from the drive component 31. During this process, the counterclockwise rotating synchronous shaft 34 drives the third connecting rod 331 to rotate counterclockwise, causing the fourth connecting rod 332 to move synchronously away from the drive component 31. Thus, driven by the second connecting rod 322 and the fourth connecting rod 332, the two connecting plates 21 move synchronously away from the drive component 31 until the moving panel 4 opens the air intake 13.

[0059] Based on the above embodiments, the first link 321, the second link 322 and the fourth link 332 are all bent plate structures, and the connecting rod 323 and the third link 331 are both arc-shaped plate structures.

[0060] For the movable panel assembly of this utility model, please refer to [link / reference]. Figures 6 to 11 The mounting cavity is provided with two mounting plates 11, which are symmetrically arranged in the mounting cavity, and the two ends of the synchronous shaft 34 are respectively rotatably connected to the two mounting plates 11.

[0061] Driven by the drive mechanism 3 and transmitted by the active component 32, the synchronous shaft 34 rotates. The two mounting plates 11 can provide stable support for both ends of the synchronous shaft 34, ensuring the stable rotation of the synchronous shaft 34.

[0062] In this embodiment, both ends of the synchronous shaft 34 can be rotatably mounted to the mounting plate 11 via bearings.

[0063] For the movable panel assembly of this utility model, please refer to [link / reference]. Figures 6 to 11 The lower end of the mounting plate 11 is connected to a limit buckle 111, which forms a second limiting element. The limit buckle 111 has a limiting groove that is adapted to the synchronizing rod 22.

[0064] When the air inlet 13, which is in the open state, is closed by the drive mechanism 3, the synchronizing rod 22 moves synchronously with the two connecting plates 21. When the air inlet 13 is closed, the synchronizing rod 22 enters the limiting groove of the two limiting buckles 111. The two limiting buckles 111 limit the synchronizing rod 22, so that the lower end of the moving panel 4 cannot be pried outward, thereby ensuring that the distance from the upper and lower ends of the moving panel 4 to the plane where the air inlet 13 is located is equal.

[0065] In this embodiment, mounting grooves with openings facing away from the drive member 31 are provided on the end sides of both mounting plates 11, and the limiting buckles 111 are installed in the corresponding mounting grooves. Both limiting buckles 111 are L-shaped, and the two mounting plates 11 are inserted into the openings of the corresponding limiting buckles 111. The limiting buckles 111 can be installed on the mounting plates 11 by screws. Both limiting buckles 111 have arc-shaped limiting grooves to fit the synchronizing rod 22 and achieve stable limiting of the synchronizing rod 22.

[0066] This utility model also discloses a smoke hood; please refer to [link / reference]. Figures 1 to 11 The aforementioned movable panel assembly includes an inner air box 5 and an outer air box 6. The inner air box 5 is located in the mounting cavity of the main body 1 of the range hood, and the outer air box 6 is located above the main body 1 of the range hood and communicates with the inner air box 5. An air intake 13 is provided on the front side plate 12 of the main body 1 of the range hood. The drive mechanism 3 drives the movable panel 4 to slide along the front side plate 12 to open or close the air intake 13.

[0067] During cooking, the drive mechanism 3 drives the movable panel 4 to open the air intake vent 13, so that the fumes are drawn from the air intake vent 13 into the inner air box 5 and further into the outer air box 6 for processing. As the movable panel 4 opens or closes the air intake vent 13, it slides along the front side panel 12.

[0068] A back panel is provided on the back of the main body 1 of the range hood. The back panel is positioned opposite to the front side panel 12 and is located on the rear side of the inner air box 5.

[0069] For the smoke hood of this utility model, please refer to [link / reference]. Figure 2 and Figure 3 The front panel 12 is provided with a clearance groove 121, and the movable panel 4 is provided with a connector. The connector extends into the mounting cavity through the clearance groove 121 and is connected to the connecting plate 21.

[0070] In this embodiment, clearance grooves 121 are provided at both ends of the front side panel 12, and the two clearance grooves 121 are respectively provided with two connecting plates 21; connectors are provided at both ends of the movable panel 4, and the two connectors extend into the clearance grooves 121 on the corresponding side to connect with the corresponding connecting plates 21.

[0071] Both clearance slots 121 are elongated holes. During the sliding of the movable panel 4, the two connecting parts slide within the corresponding clearance slots 121.

[0072] For the smoke hood of this utility model, please refer to [link / reference]. Figure 2 and Figure 3It also includes a fixed panel 7, which is located on the front side of the front panel 12 and above the air intake 13. When the movable panel 4 closes the air intake 13, the lower edge of the fixed panel 7 abuts against the upper edge of the movable panel 4, and the fixed panel 7 and the movable panel 4 are located on the same plane.

[0073] Driven by the drive mechanism 3, when the movable panel 4 closes the air intake vent 13, the lower edge of the fixed panel 7 abuts against the upper edge of the movable panel 4, ensuring that the air intake vent 13 is completely closed and will not connect to the outside world due to the gap between the lower edge of the fixed panel 7 and the upper edge of the movable panel 4, thus ensuring that the air intake vent 13 is closed properly. With the movable panel 4 in the closed state, the fixed panel 7 and the movable panel 4 are on the same plane, ensuring the neatness and aesthetics of the range hood.

[0074] For the smoke hood of this utility model, please refer to [link / reference]. Figure 2 and Figure 3 The front panel 12 is divided into an upper part and a lower part. The air intake 13 is located in the lower part. The lower part is recessed towards the rear of the main body 1 of the range hood relative to the upper part, and forms a moving gap between the movable panel 4 and the front panel 12.

[0075] When the movable panel 4 is driven by the drive mechanism 3 to move, the movement gap formed between the movable panel 4 and the front side plate 12 can prevent the movable panel 4 from generating noise due to contact with the front side plate 12, thus ensuring the user's comfort when using the range hood.

[0076] The upper part of the front panel 12 extends into and abuts against the rear side of the fixed panel 7 to form a seal, preventing oil fumes from entering the range hood through the gap between the upper part of the front panel 12 and the fixed panel 7 during cooking, thus ensuring that the oil fumes can be drawn out from the air intake 13 and ensuring the best user experience.

[0077] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements 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 movable panel assembly for a range hood, characterized in that, include: The main body of the range hood (1) has an installation cavity, and a first limiting member (14) and a second limiting member are connected to the wall of the installation cavity; There are two guide components (2), which are located in the mounting cavity. Each guide component (2) includes a fixing member and a sliding member. Each sliding member is connected to a connecting plate (21). A synchronizing rod (22) is connected between the two connecting plates (21). A drive mechanism (3) is provided in the mounting cavity for driving the two connecting plates (21) to slide along the guide assembly (2); The movable panel (4) is slidably connected to the main body (1) of the range hood and connected to the connecting plate (21); The movable panel (4) has a first position with the air inlet (13) of the range hood closed and a second position with the air inlet (13) of the range hood open. In the first position, the first limiting member (14) presses the connecting plate (21) backward, and the second limiting member limits the synchronizing rod (22) so that the connecting plate (21) cannot tilt in the front and back direction.

2. The movable panel assembly according to claim 1, characterized in that, The first limiting member (14) is provided with a first protrusion and a second protrusion, and there is a recess between the first protrusion and the second protrusion. When the movable panel (4) is in the first position, the first protrusion and the second protrusion simultaneously support the sliding member of the guide assembly (2); when the movable panel (4) is in the second position, the first protrusion supports the sliding member of the guide assembly (2).

3. The movable panel assembly according to claim 1, characterized in that, The drive mechanism (3) includes a drive member (31), an active component (32), a driven component (33), and a synchronous shaft (34). The output end of the drive member (31) is driven to the active component (32). The active component (32) has a first output end and a second output end. The first output end is driven to one end of the synchronous shaft (34), and the second output end is driven to the connecting plate (21) on the corresponding side. The driven component (33) has a third input end and a fourth output end. The third input end is driven to the other end of the synchronous shaft (34), and the fourth output end is driven to the connecting plate (21) on the corresponding side. The synchronous shaft (34) is rotatably connected to the mounting cavity.

4. The movable panel assembly according to claim 3, characterized in that, The active component (32) includes a first link (321) and a second link (322). The output end of the drive member (31) is connected to the first end of the first link (321), and the second end of the first link (321) is connected to the synchronous shaft (34). The first end of the second link (322) forms a first output end connected to one end of the synchronous shaft (34), and the second end of the second link (322) forms a second output end connected to the corresponding side of the connecting plate (21). The driven component (33) includes a third link (331) and a fourth link (332). The first end of the third link (331) forms a third input end connected to the other end of the synchronous shaft (34), and the second end of the third link (331) is connected to the first end of the fourth link (332). The second end of the fourth link (332) is connected to the corresponding side of the connecting plate (21).

5. The movable panel assembly according to claim 3, characterized in that, The mounting cavity is provided with mounting plates (11), and there are two mounting plates (11). The two mounting plates (11) are symmetrically arranged in the mounting cavity, and the two ends of the synchronous shaft (34) are respectively rotatably connected to the two mounting plates (11).

6. The movable panel assembly according to claim 5, characterized in that, The lower end of the mounting plate (11) is connected to a limit buckle (111), which forms the second limiting member. The limit buckle (111) has a limiting groove that is adapted to the synchronizing rod (22).

7. A range hood, employing the movable panel assembly according to any one of claims 1 to 6, characterized in that, The system includes an inner air box (5) and an outer air box (6). The inner air box (5) is located in the mounting cavity of the main body (1) of the range hood. The outer air box (6) is located above the main body (1) of the range hood and communicates with the inner air box (5). The front side plate (12) of the main body (1) of the range hood is provided with an air intake (13). The driving mechanism (3) drives the movable panel (4) to slide along the front side plate (12) to open or close the air intake (13).

8. The smoke hood according to claim 7, characterized in that, The front side plate (12) is provided with a clearance groove (121), and the movable panel (4) is provided with a connector. The connector extends into the mounting cavity through the clearance groove (121) and is connected to the connecting plate (21).

9. The range hood according to claim 7, characterized in that, It also includes a fixed panel (7), which is located on the front side of the front panel (12) and above the air intake (13). When the movable panel (4) closes the air intake (13), the lower edge of the fixed panel (7) abuts against the upper edge of the movable panel (4), and the fixed panel (7) and the movable panel (4) are located on the same plane.

10. The range hood according to claim 9, characterized in that, The front panel (12) is divided into an upper part and a lower part. The air inlet (13) is located in the lower part. The lower part is recessed towards the rear side of the main body (1) of the range hood relative to the upper part and forms a moving gap between the movable panel (4) and the front panel (12).

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