A limiting mechanism and a range hood

Abstract

The application discloses a limiting mechanism and a range hood, and belongs to the technical field of kitchen heating equipment, to solve the technical problem of small limiting stroke of the current limiting mechanism. The limiting mechanism comprises a base plate, a driver, a transmission member, a movable toggle plate and a limiting member. The driver is arranged on the base plate. The transmission member is connected with the driver. The driver can drive the transmission member to reciprocate rotation in a preset direction. The transmission member can form a first rotation path during rotation. The movable toggle plate is rotatably arranged on the base plate and located on the first rotation path. The transmission member can push the movable toggle plate to rotate during movement along the first rotation path, so as to form a second rotation path. The limiting member is located on the second rotation path and is staggered with the first rotation path. The transmission member does not directly contact the limiting member during rotation, and the movable toggle plate can contact and limit the limiting member, so that the angle of the driver driving the transmission member to rotate is increased under the condition that the driver driving the transmission member to rotate is limited.

Description

Technical Field

[0001] This application belongs to the field of kitchen heating equipment technology, and in particular relates to a limiting mechanism and a range hood. Background Technology

[0002] Rotating mechanisms can be used in various devices to provide power. Limiting devices can be installed in rotating mechanisms to limit the rotational stroke.

[0003] In related technologies, although the limiting device in the rotating mechanism can limit the stroke of the rotating mechanism, it can also cause the rotation stroke of the rotating mechanism to be too small. Summary of the Invention

[0004] This application aims to at least partially solve the technical problem of insufficient travel after the current rotating mechanism reaches its limit. To this end, this application provides a limit mechanism and a range hood.

[0005] In a first aspect, the limiting mechanism provided in the embodiments of this application includes:

[0006] substrate,

[0007] The driver is disposed on the substrate.

[0008] A transmission component is connected to the driver, which can drive the transmission component to reciprocate along a preset rotation direction, and the transmission component can form a first rotation path during rotation.

[0009] A movable paddle, rotatably mounted on the base plate and located on the first rotation path, can be driven to rotate by the transmission member as it moves along the first rotation path, thereby forming a second rotation path.

[0010] A limiting member is disposed on the substrate, the limiting member being located on the second rotation path and offset from the first rotation path.

[0011] In the limiting mechanism proposed in this application embodiment, the driver connects to the transmission component, enabling the transmission component to reciprocate along a preset direction. This rotation of the transmission component forms a first rotation path. The movable paddle is rotatably mounted on the base plate and located on the first rotation path, allowing the transmission component to push the movable paddle to rotate. During the rotation of the movable paddle, a second rotation path is formed. The limiting component is located on the second rotation path but outside the first rotation path. Therefore, the transmission component will not directly contact the limiting component during rotation, while the movable paddle can contact and limit the movement of the limiting component. This means that the transmission component needs to contact the movable paddle and push it to rotate a certain angle before the movable paddle can make contact with the limiting component. This increases the angle at which the driver drives the transmission component to rotate while limiting its rotation.

[0012] In some embodiments, the second rotation path is disposed around the first rotation path, and the limiting member is located outside the first rotation path.

[0013] The second rotation path is set to be around the first rotation path.

[0014] In some embodiments, the driver includes a drive shaft, the movable paddle is sleeved on the drive shaft and rotatable relative to the drive shaft, and the transmission element is connected to the drive shaft.

[0015] By mounting the movable paddle on the drive shaft, it is not necessary to have an additional mechanism on the base plate for rotatably connecting the movable paddle to the base plate, thus simplifying the structure of the limiting mechanism.

[0016] In some embodiments, the substrate has a first plate surface and a second plate surface facing away from each other. The transmission member, the movable paddle, and the limiting member are all disposed on the first plate surface, and the driver is disposed on the second plate surface. One end of the transmission shaft is connected to the driver, and the other end of the transmission shaft passes through the substrate and is connected to the transmission member and the movable paddle.

[0017] By distributing the components of the limiting mechanism on the first and second surfaces of the substrate, the substrate surfaces can be fully utilized to mount the components, thereby reducing the volume of the substrate.

[0018] Secondly, based on the limiting mechanism described above, this application also proposes a range hood, including a smoke collection component, a smoke guiding component, a rack and pinion, and the limiting mechanism described above. The transmission component includes a first gear and a protrusion. The protrusion is disposed on the first gear, and the protrusion can form the first rotation path during rotation. The smoke guiding component has a smoke inlet, and the smoke collection component has a smoke collection cavity. The smoke guiding component is movably connected to the smoke collection component, and the smoke inlet communicates with the smoke collection cavity. The rack is disposed on the smoke collection component, and the base plate is disposed on the smoke guiding component. The first gear is connected to the driver and meshes with the rack to drive the smoke guiding component to reciprocate along a preset direction.

[0019] By applying the limiting mechanism of this application to a range hood, the movement stroke of the smoke guiding component can be limited during the process of driving the smoke guiding component to move in a preset direction, and at the same time, the movement stroke of the smoke guiding component can be extended.

[0020] In some embodiments, during the process of the driver driving the first gear to rotate, the smoke guiding component can reciprocate in a preset direction so that the smoke guiding component is located in the smoke collection chamber, or so that at least part of the smoke guiding component is located outside the smoke collection chamber.

[0021] When using a range hood, the smoke guide component can be placed outside the smoke collection chamber, making it closer to the stovetop for better smoke absorption. When the range hood is not in use, the smoke guide component can be hidden inside the smoke collection component, making the range hood look simpler and more aesthetically pleasing.

[0022] In some embodiments, the smoke guiding assembly has a smoke outlet communicating with the smoke inlet. The smoke outlet is located in the smoke collection chamber when the smoke guiding assembly is located inside the smoke collection chamber, and when at least part of the smoke guiding assembly is located outside the smoke collection chamber.

[0023] The smoke outlet is always located in the smoke collection chamber, which allows the smoke in the smoke guiding component to completely enter the smoke collection chamber of the smoke collection component, preventing the smoke from leaking between the smoke guiding component and the smoke collection component.

[0024] In some embodiments, the smoke guiding assembly has a first end adjacent to the smoke collecting assembly and a second end opposite to the smoke collecting assembly, the smoke inlet is disposed on the side wall of the smoke guiding assembly adjacent to the second end, and the smoke outlet is disposed at the first end.

[0025] After the smoke inlet is located on the side wall of the smoke guiding component, when the smoke guiding component is located in the smoke collection chamber of the smoke collecting component, the smoke inlet can be hidden in the smoke collection chamber.

[0026] In some embodiments, the bump is eccentrically disposed on the first gear so as to rotate with the first gear.

[0027] The protrusion is integrated with the first gear, making the structure of the transmission component more compact.

[0028] In some embodiments, the range hood further includes a synchronous shaft, a second gear, and a third gear. There are two third gears and two racks. The two racks are disposed on the inner walls of the smoke collection chamber opposite to each other. The synchronous shaft passes through the base plate. The second gear is sleeved on the synchronous shaft and meshes with the first gear. The two third gears are sleeved on the synchronous shaft and mesh with the two racks respectively.

[0029] The synchronous shaft can synchronously drive two third gears to rotate relative to two racks, thereby enabling the opposite sides of the smoke guide assembly to move synchronously, so that the smoke guide assembly remains stable during movement. In addition, after the third gear meshes with the rack, the rack and the third gear limit each other, making the smoke guide assembly more stable during movement.

[0030] In some embodiments, the range hood further includes a slide rail and a slider, the slide rail being disposed on the smoke collection assembly, and the slider being disposed on the smoke guiding assembly and embedded in the slide rail.

[0031] The movement of the smoke guide assembly can be guided by setting slide rails and sliders.

[0032] In some embodiments, the range hood further includes a mounting bracket disposed in the smoke collection chamber, and the rack and the slide rail are both disposed in the mounting bracket.

[0033] Installing brackets can enhance the structural strength of the smoke collection assembly. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the limiting mechanism disclosed in an embodiment of this application is shown;

[0036] Figure 2 It shows Figure 1 Exploded view of the middle limit mechanism;

[0037] Figure 3 It shows Figure 1 A schematic diagram showing that the middle or movable paddle is not in contact with the limiting component;

[0038] Figure 4 It shows Figure 1 A schematic diagram showing the contact and limiting action between the movable paddle and the limiting component;

[0039] Figure 5 A schematic diagram of the structure of the range hood disclosed in the embodiments of this application is shown;

[0040] Figure 6 It shows Figure 5 A schematic diagram of the central smoke guide assembly located within the smoke collection chamber;

[0041] Figure 7 It shows Figure 5 A schematic diagram of the smoke guide assembly and mounting bracket in action from one perspective;

[0042] Figure 8 It shows Figure 5 A schematic diagram of the smoke guide assembly and mounting bracket in action from another perspective.

[0043] Figure label:

[0044] 100 - baseboard, 110 - synchronous shaft, 120 - second gear, 130 - third gear

[0045] 200-Driver, 210-Driver component, 220-Drive shaft, 230-First gear, 231-Protrusion,

[0046] 300-Active Pick,

[0047] 400-Limit component,

[0048] 500 - Smoke collection assembly, 510 - Smoke collection chamber, 520 - Rack and pinion, 530 - Mounting bracket, 531 - Weight reduction hole, 540 - Slide rail.

[0049] 600 - Smoke guiding assembly, 610 - Smoke inlet

[0050] 700 - First rotation path,

[0051] 800 - Second rotation path. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0053] It should be noted that all directional indications in the embodiments of this invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances. In addition, the descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0054] This application is described below with reference to the accompanying drawings and specific embodiments:

[0055] Example 1

[0056] Please refer to Figure 1 Figure 1 shows an embodiment of this application that discloses a limiting mechanism, including a base plate 100, a driver 200, a transmission component, a movable paddle 300, and a limiting component 400. This limiting mechanism can be applied to devices such as transmission equipment and lifting equipment to control the stroke of the transmission equipment and lifting equipment.

[0057] The substrate 100 is the basic component of the limiting mechanism of this application, and the substrate 100 can provide a mounting base for at least some other components of the limiting mechanism. The substrate 100 can be a metal plate-shaped component, so that the substrate 100 has better structural strength.

[0058] The driver 200 is disposed on the substrate 100, and the transmission component is connected to the output terminal of the driver 200. After the driver 200 is started, it can drive the transmission component to rotate in a preset direction. During its rotation, the transmission component can form a first rotation path 700. Specifically, the driver 200 can drive the transmission component to reciprocate in the preset direction, so that the transmission component can rotate in a clockwise or counterclockwise direction on the first rotation path 700.

[0059] The movable paddle 300 is also disposed on the substrate 100 and is rotatable. Specifically, the movable paddle 300 can rotate relative to the connection between the movable paddle 300 and the substrate 100. The movable paddle 300 is located on the first rotation path 700 of the transmission member. Therefore, when the driver 200 drives the transmission member to move on the first rotation path 700, the transmission member can contact the movable paddle 300 and push the movable paddle 300 to rotate around the connection between the movable paddle 300 and the substrate 100. During the rotation, the movable paddle 300 can form a second rotation path 800.

[0060] The limiting member 400 is disposed on the base plate 100. The limiting member 400 is located on the second rotation path 800 and is offset from the first rotation path 700. In this way, when the movable paddle 300 moves on the second rotation path 800, it can contact the limiting member 400. The limiting member 400 is fixedly disposed on the base plate 100. Therefore, when the movable paddle 300 contacts the limiting member 400, the limiting member 400 can limit the movable paddle 300 to prevent the movable paddle 300 from continuing to move. In this way, the driver 200 cannot drive the transmission component to continue to move, thereby achieving the purpose of limiting the stroke of the transmission component.

[0061] Because the limiting member 400 is misaligned with the first rotation path 700, the transmission member will not directly contact the limiting member 400 during the process of the driver 200 driving the transmission member to rotate. Therefore, the limiting member 400 will not directly limit the transmission member. Instead, the limiting member 400 limits the movable paddle 300 after the transmission member drives the movable paddle 300 to rotate, thereby limiting the transmission member.

[0062] Specifically, the movable paddle 300 has a second side opposite to the first side. When the driver 200 drives the transmission component to rotate, the transmission component can contact the first side of the movable paddle 300. The driver 200 continues to drive the transmission component to rotate, which can push the movable paddle 300 to rotate, thereby causing the movable paddle 300 to abut against the limiting member 400 and be limited.

[0063] When the driver 200 drives the transmission component to rotate in the reverse direction, the transmission component can contact the second side of the movable paddle 300. The driver 200 continues to drive the transmission component to move in the reverse direction, causing the transmission component to push the movable paddle 300 to rotate in the reverse direction. Therefore, when the initial position of the transmission component is adjacent to the first side of the movable paddle 300, by driving the transmission component to move in the reverse direction, the transmission component needs to rotate a larger angle before it can contact the movable paddle 300. Then, the movable paddle 300 is driven to rotate until it contacts the limiting member 400. Thus, while limiting the rotation angle of the transmission component, a larger rotation angle of the transmission component is achieved.

[0064] Furthermore, the rotatable angle of the transmission component can be further altered by changing the size of the movable paddle 300 and the transmission component. Specifically, when the distance between the first and second sides of the movable paddle 300 is small, and the distance between the opposite sides of the limiting member 400 is also small, the transmission component can push the movable paddle 300 to rotate a greater distance. The movable paddle 300 also needs to rotate a greater distance before it can contact and be limited by the limiting member 400, thus allowing the driver 200 to drive the transmission component to rotate at a greater angle. When the movable paddle 300 and the limiting member 400 adopt a fan-shaped structure, the rotatable angle of the transmission component can be increased by decreasing the central angle of the movable paddle 300 and the limiting member 400; conversely, the rotatable angle of the transmission component can be decreased by increasing the central angle of the movable paddle 300 and the limiting member 400.

[0065] In the limiting mechanism proposed in this application embodiment, the driver 200 is connected to the transmission member, which can cause the transmission member to reciprocate. After the transmission member rotates, a first rotation path 700 is formed. The movable paddle 300 is rotatably disposed on the base plate 100 and located on the first rotation path 700, so that the transmission member can push the movable paddle 300 to rotate. During the rotation of the movable paddle 300, a second rotation path 800 is formed. The limiting member 400 is on the second rotation path 800 and located outside the first rotation path 700. Therefore, the transmission member will not directly contact the limiting member 400 during rotation, while the movable paddle 300 can contact and limit the movement of the limiting member 400. Thus, while limiting the rotation of the transmission member driven by the driver 200, the angle of rotation of the transmission member driven by the driver 200 is increased.

[0066] In some embodiments, to ensure that the movable paddle 300 and the limiting member 400 can fully utilize the surface of the substrate 100 for installation, the second rotation path 800 formed by the rotation of the movable paddle 300 is arranged around the first rotation path 700 formed by the rotation of the transmission member. This reduces the volume of the transmission member, making the area occupied by the transmission member on the substrate 100 smaller, thereby making the limiting mechanism structure of this application more compact. Simultaneously, the limiting member 400 is disposed outside the first rotation path 700, so that the limiting member 400 is located on the side of the transmission member away from the connection between the transmission member and the substrate 100. This allows the limiting member 400 to fully utilize the surface of the substrate 100, making it easier to install the limiting member 400 on the substrate 100.

[0067] Of course, in other embodiments, the outer edges of the first rotation path 700 formed by the transmission member and the second rotation path 800 formed by the movable paddle 300 may be arranged to coincide. At the same time, the limiting member 400 may be arranged on the inner side of the first rotation path 700. In this way, when the transmission member moves on the first rotation path 700, it can contact the movable paddle 300 but will not contact the limiting member 400. Meanwhile, when the movable paddle 300 moves along the second rotation path 800, it can contact the limiting member 400, so that the limiting member 400 limits the movable paddle 300.

[0068] The outer edges of the first rotation path 700 and the second rotation path 800 coincide, which can reduce the volume of the movable paddle 300. The limiting member 400 is located inside the first rotation path 700, which can reduce the volume of the limiting member 400. In this way, the overall volume of the limiting mechanism of this application is relatively small after the volumes of the movable paddle 300 and the limiting member 400 are reduced.

[0069] In some embodiments, the aforementioned driver 200 may be configured to include a driving member 210 and a transmission shaft 220. The transmission shaft 220 is connected to the driving member 210. After the driving member 210 is activated, it can drive the transmission shaft 220 to rotate. The transmission member is connected to the transmission shaft 220 of the driver 200, thereby enabling the driver 200 to drive the transmission member to rotate. The movable paddle 300 can be connected to the transmission shaft 220, and the movable paddle 300 can rotate relative to the transmission shaft 220. Specifically, the movable paddle 300 may have a through hole through which the transmission shaft 220 of the driver 200 can pass, allowing the movable paddle 300 to be sleeved on the transmission shaft 220. The through hole of the movable paddle 300 and the transmission shaft 220 are in clearance fit, allowing the movable paddle 300 to rotate relative to the transmission shaft 220. Thus, when the driver 200 drives the transmission member to rotate, and the transmission member is not in contact with the movable paddle 300, the movable paddle 300 will not rotate with the rotation of the transmission member.

[0070] Therefore, when the movable paddle 300 is sleeved on the drive shaft 220 of the driver 200, the movable paddle 300 is rotatably mounted on the base plate 100. In this way, it is not necessary to open an additional connecting shaft on the base plate 100 to install the movable paddle 300, and the movable paddle 300 can be rotatably mounted on the base plate 100. This reduces the number of parts in the limiting mechanism of this application and simplifies the structure of the limiting mechanism.

[0071] In some embodiments, in order to make the arrangement of the various components mounted on the substrate 100 more reasonable and reduce the surface area and volume of the substrate 100, the opposite surfaces of the substrate 100 can be set as the first surface and the second surface. The transmission component, the movable paddle 300 and the limiting component 400 mentioned above can all be set on one side of the first surface of the substrate 100, and the driver 200 can be set on the second surface. This way, it is not necessary to set too many components on either side of the substrate 100, thereby reducing the area of ​​the substrate 100, and thus reducing the volume of the substrate 100, and finally reducing the volume of the limiting mechanism of this application.

[0072] Specifically, the drive shaft 220 of the driver 200 can be configured to pass through the substrate 100 and extend from one side of the second plate surface of the substrate 100 to one side of the first plate surface. In this way, the through hole on the substrate 100 through which the drive shaft 220 of the driver 200 passes can also serve to support the drive shaft 220, making the drive shaft 220 more stable and reliable.

[0073] Example 2

[0074] refer to Figures 5-8Based on the limiting mechanism described above, this application embodiment also proposes a range hood, which includes the limiting mechanism described above. Specifically, the range hood also includes a smoke collection component 500, a smoke guiding component 600, and a rack and pinion 520.

[0075] It should be understood that when a range hood is installed in the kitchen, it can be installed on the kitchen wall and above the stove, so that the fumes generated at the stove can be drawn in by the range hood.

[0076] The smoke guiding component 600 is movably connected to the smoke collecting component 500, allowing the smoke guiding component 600 to move relative to the smoke collecting component 500. The smoke collecting component 500 has a smoke collecting chamber 510, and the smoke guiding component 600 has a smoke inlet 610. The smoke inlet 610 of the smoke guiding component 600 is connected to the smoke collecting chamber 510 of the smoke collecting component 500. Therefore, the smoke and exhaust gas generated in the kitchen can enter the smoke collecting chamber 510 through the smoke inlet 610. The smoke collecting chamber 510 of the smoke collecting component 500 can be equipped with components such as a fan to draw the fumes and exhaust gas into the smoke collecting chamber 510 through the smoke inlet 610.

[0077] Specifically, the smoke guiding component 600 has a smoke guiding channel inside and a smoke outlet. The smoke inlet 610 of the smoke guiding component 600 is connected to the smoke outlet of the smoke guiding component 600 through the smoke guiding channel inside the smoke guiding component 600. The smoke outlet of the smoke guiding component 600 is connected to the smoke collection chamber 510 of the smoke collecting component 500. Thus, external smoke can enter the smoke guiding channel of the smoke guiding component 600 through the smoke inlet 610 and be discharged into the smoke collection chamber 510 of the smoke collecting component 500 through the smoke outlet of the smoke guiding component 600.

[0078] It should be understood that the range hood also contains a fan and a filter (not shown in the figure). The fan generates negative pressure, which draws in cooking fumes from outside the range hood through the smoke inlet 610 of the smoke guide assembly 600. The fumes are then filtered and purified by the filter. The fan and filter can be located within the smoke collection assembly 500 or the smoke guide assembly 600; this application does not impose any restrictions on this.

[0079] The smoke guiding component 600 is movably connected to the smoke collecting component 500. Specifically, the smoke guiding component 600 can reciprocate relative to the smoke collecting component 500 in a preset direction, so that the smoke guiding component 600 is completely located within the smoke collecting chamber 510 of the smoke collecting component 500, or at least a portion of the smoke guiding component 600 is located outside the smoke collecting chamber 510 of the smoke collecting component 500. When the smoke guiding component 600 is completely located within the smoke collecting chamber 510 of the smoke collecting component 500, the smoke guiding component 600 is hidden within the smoke collecting component 500, which reduces the overall size of the range hood of this application and makes the appearance of the range hood more concise and aesthetically pleasing. When the range hood is operating, at least a portion of the smoke guiding assembly 600 can be positioned outside the smoke collection chamber 510 of the smoke collecting assembly 500. This reduces the distance between the smoke guiding assembly 600 and the cooktop, and consequently, the distance between the smoke inlet 610 on the smoke guiding assembly 600 and the cooktop is smaller. This allows fumes and exhaust gases generated at the cooktop to be more easily drawn into the smoke collection chamber 510 of the smoke collecting assembly 500 through the smoke inlet 610 of the smoke guiding assembly 600. When the range hood is off, the smoke guiding assembly 600 can be positioned inside the smoke collection chamber 510 of the smoke collecting assembly 500 to maintain the range hood's aesthetic appearance.

[0080] The base plate 100 in the limiting mechanism can be disposed on the smoke guiding assembly 600. Therefore, the driver 200, transmission component, movable paddle 300, and limiting component 400 in the limiting mechanism are all disposed on the smoke guiding assembly 600. The transmission component is configured to include a first gear 230 and a protrusion 231. The protrusion 231 is disposed on the first gear 230. The first gear 230 is connected to the output end of the driver 200. After the driver 200 is started, it can drive the first gear 230 to rotate. The rack 520 is disposed on the smoke collecting assembly 500, and the first gear 230 meshes with the rack 520. The rack 520 is disposed on the smoke collecting assembly 500, and the first gear 230 meshes with the rack 520. The extension direction of the rack 520 is in the same direction as the preset direction. Therefore, when the smoke guiding component 600 is movably connected to the smoke collecting component 500, the driver 200 drives the first gear 230 to rotate, which allows the first gear 230 to move along the rack 520, thereby allowing the smoke guiding component 600 to move along a preset direction. When the driver 200 drives the first gear 230 to rotate in the opposite direction, it can drive the smoke guiding component 600 to move in the opposite direction along the preset direction, thereby allowing the smoke guiding component 600 to reciprocate in the preset direction, so that the smoke guiding component 600 is located inside the smoke collecting chamber 510 of the smoke collecting component 500, or at least part of the smoke guiding component 600 is located outside the smoke collecting chamber 510 of the smoke collecting component 500.

[0081] During the rotation of the first gear 230 driven by the driver 200, the protrusion 231 on the first gear 230 also rotates with it. The protrusion 231 forms a first rotation path 700 during rotation, thus contacting the movable paddle 300 and pushing it to rotate. This, in turn, pushes the movable paddle 300 into contact with the limiting member 400, limiting its position and consequently limiting the rotational stroke of the first gear 230, thereby controlling the angle at which the driver 200 drives the first gear 230 to rotate. This also limits the stroke of the first gear 230 along the rack 520, thereby controlling the stroke of the smoke guiding assembly 600 relative to the smoke collecting assembly 500.

[0082] When the limiting mechanism of this application is applied to a range hood, the travel distance of the smoke guiding component 600 relative to the smoke collecting component 500 can be limited. Furthermore, by controlling the distance between the two ends of the movable paddle 300 and the distance between the two ends of the limiting component 400, the travel distance of the first gear 230 along the rack 520 can be increased. This results in a greater travel distance for the smoke guiding component 600 relative to the smoke collecting component 500, allowing the smoke guiding component 600 to move completely into the smoke collecting chamber 510 of the smoke collecting component 500.

[0083] In some embodiments, the protrusion 231 may be eccentrically disposed on the first gear 230, such that the center of the protrusion 231 and the center of the first gear 230 are at a certain distance, and the first rotation path 700 formed by the protrusion 231 as it rotates with the first gear 230 is annular. After the protrusion 231 is disposed on the first gear 230, the protrusion 231 does not need to be directly connected to the drive shaft 220 of the driver 200, thereby reducing the length of the drive shaft 220 of the driver 200 and making the installation of the protrusion 231 more convenient.

[0084] The protrusion 231 can be detachably mounted on the first gear 230 to reduce the machining difficulty of the transmission component. Specifically, a screw hole can be made off-center on the first gear 230, and the protrusion 231 can be provided with external threads. The protrusion 231 is screwed into the screw hole, thereby fixing the protrusion 231 to the first gear 230.

[0085] Of course, in other embodiments, the protrusion 231 can also be separated from the first gear 230. Specifically, the first gear 230 is sleeved on the drive shaft 220 of the driver 200, and the protrusion 231 is also sleeved on the first gear 230, so that the protrusion 231 and the first gear 230 can rotate synchronously.

[0086] In some embodiments, to ensure the stability of the smoke guiding assembly 600 during its movement relative to the smoke collecting assembly 500 in a preset direction, the range hood of this application may further include a synchronous shaft 110, a second gear 120, and two third gears 130, and the number of racks 520 is also set to two. The two racks 520 are disposed on opposite inner walls of the smoke collecting chamber 510. A through hole is provided on the base plate 100 for the synchronous shaft 110 to pass through, allowing the synchronous shaft 110 to rotate around its axis. The second gear 120 is sleeved on the synchronous shaft 110 and meshes with the first gear 230. Thus, when the driver 200 drives the first gear 230 to rotate, it can drive the second gear 120 to rotate, thereby driving the synchronous shaft 110 to rotate. Both third gears 130 are mounted on the synchronous shaft 110, and the two third gears 130 mesh with the two racks 520 respectively. Therefore, the two third gears 130 can rotate synchronously and move synchronously relative to the two racks 520 in a preset direction. This allows the smoke guiding assembly 600 to maintain balance and stability during its movement relative to the smoke collecting assembly 500.

[0087] Specifically, the two ends of the synchronous shaft 110 can extend to the opposite sides of the smoke guide assembly 600 respectively, and the two third gears 130 can be sleeved on the opposite ends of the synchronous shaft 110. Therefore, the two third gears 130 are also located on the opposite sides of the smoke guide assembly 600, and the connection between the third gears 130 and the rack 520 is also located on the opposite sides of the smoke guide assembly 600. This allows the opposite sides of the smoke guide assembly 600 to move synchronously during the reciprocating movement of the smoke guide assembly 600 in a preset direction, so that the smoke guide assembly 600 can maintain overall balance during the movement.

[0088] When the third gear 130 meshes with the rack 520, the rack 520 and the third gear 130 can mutually limit each other. Therefore, when either the third gear 130 moves relative to the rack 520, the other third gear 130 will also move synchronously relative to the rack 520, thus ensuring excellent balance during the movement of the smoke guiding assembly 600. Furthermore, by placing the two racks 520 within the smoke collecting chamber 510 of the smoke collecting assembly 500, the two racks 520 can be concealed within the smoke collecting assembly 500, resulting in a more aesthetically pleasing overall appearance.

[0089] In some embodiments, to enable the smoke guiding assembly 600 to be movably connected to the smoke collecting assembly 500, the range hood of this application may further be provided with a slide rail 540 and a slider. The slide rail 540 and the slider may be respectively disposed on the smoke collecting assembly 500 and the smoke guiding assembly 600. The slider engages with the slide rail 540 so that the slider can move along the slide rail 540. The extension direction of the slide rail 540 is in the same direction as a preset direction. Therefore, during the movement of the smoke guiding assembly 600 relative to the smoke collecting assembly 500, the slider can slide along the slide rail 540. The slider is embedded in the slide rail 540, so the slide rail 540 also serves to limit the slider, keeping the slider always within the slide rail 540 and preventing the slider from falling off the slide rail 540. This ensures that the smoke guiding assembly 600 and the smoke collecting assembly 500 can always maintain a movably connected state.

[0090] Specifically, a baffle can be installed at one end of the slide rail 540 near the smoke guide assembly 600. The baffle can block one end of the slide rail 540, thus limiting the slider when the distance between the smoke collection assembly 500 and the smoke guide assembly 600 reaches its maximum, thereby preventing the slider from falling off the slide rail 540 and preventing the smoke guide assembly 600 and the smoke collection assembly 500 from separating.

[0091] The number of slide rails 540 and sliders can also be set to multiple. Multiple sliders can be evenly distributed on the smoke guiding component 600, and multiple slide rails 540 can be evenly distributed on the smoke collecting component 500. Multiple sliders are set in correspondence with multiple slide rails 540. In this way, when the smoke guiding component 600 moves along the preset direction, each position on the smoke guiding component 600 can be guided to move synchronously, making the stability and balance of the smoke guiding component 600 better during the movement.

[0092] Specifically, the number of slide rails 540 and sliders can be set to three. Two sliders can be set on opposite sides of the smoke guiding assembly 600, and one slider can be set in the middle part of the smoke guiding assembly 600. Correspondingly, two slide rails 540 can be set on opposite inner walls of the smoke collecting chamber 510 of the smoke collecting assembly 500, and one slide rail 540 can be set in the middle position of the smoke collecting chamber 510 of the smoke collecting assembly 500. Thus, the opposite sides and the middle position of the smoke guiding assembly 600 can be connected to the smoke collecting assembly 500 through the cooperation of slide rails 540 and sliders.

[0093] In some embodiments, in order to further ensure that the smoke guiding assembly 600 remains stable and balanced during its movement in a preset direction, the range hood of this application may also be provided with a connecting rod. The connecting rod may be fixedly connected to multiple sliders, so that the multiple sliders and the connecting rod form a structure that can move synchronously as a whole. After any slider moves, the other sliders can also move synchronously through the connecting rod, thereby ensuring that the smoke guiding assembly 600 remains stable during its movement.

[0094] In some embodiments, the range hood of this application is further provided with a mounting bracket 530, which can be disposed and fixed within the smoke collection chamber 510 of the smoke collection assembly 500. The slide rail 540 and rack 520 mentioned above can both be disposed on the mounting bracket 530. This eliminates the need for the slide rail 540 and rack 520 to be directly installed within the smoke collection chamber 510 of the smoke collection assembly 500, and also eliminates the need for additional structures within the smoke collection chamber 510 to fix the slide rail 540 and rack 520, thus maintaining the structural integrity of the smoke collection chamber 510.

[0095] Meanwhile, after the mounting bracket 530 is installed inside the smoke collection chamber 510, it can also support the smoke collection assembly 500 from the inner wall of the smoke collection assembly 500, thus improving the structural strength of the smoke collection assembly 500. Specifically, the smoke collection assembly 500 can be constructed by fixing the plate to the mounting bracket 530. The mounting bracket 530, acting as the frame of the smoke collection assembly 500, gives the smoke collection assembly 500 good structural strength.

[0096] Specifically, the mounting bracket 530 may have screw holes for fixing the rack 520 and the slide rail 540. The rack 520 and the slide rail 540 are fixed to the mounting bracket 530 by means of bolts and screw holes, so that the rack 520 and the slide rail 540 can be fixed to the mounting bracket 530 in a detachable manner, so that the rack 520 and the slide rail 540 can be installed on the smoke collection assembly 500.

[0097] The mounting bracket 530 can be constructed by welding multiple steel structural components, which gives the mounting bracket 530 itself good structural strength, thus making the smoke collection assembly 500 have good structural strength.

[0098] In some embodiments, to enable communication between the smoke inlet 610 of the smoke guiding component 600 and the smoke collection chamber 510 of the smoke collecting component 500, the smoke outlet of the smoke guiding component 600 can be located within the smoke collection chamber 510. Specifically, when the smoke guiding component 600 is located within the smoke collection chamber 510 of the smoke collecting component 500, the smoke outlet of the smoke guiding component 600 is located within the smoke collection chamber 510 of the smoke collecting component 500. When at least a portion of the smoke guiding component 600 is located outside the smoke collection chamber 510 of the smoke collecting component 500, the smoke outlet of the smoke guiding component 600 is still located within the smoke collection chamber 510 of the smoke collecting component 500. This ensures that the smoke outlet of the smoke guiding component 600 is always in communication with the smoke collection chamber 510 of the smoke collecting component 500.

[0099] At least a portion of the smoke guiding component 600 can be configured to always be located within the smoke collecting component 500, and the smoke outlet of the smoke guiding component 600 is located on the portion of the smoke guiding component 600 that is always located within the smoke collecting chamber 510 of the smoke collecting component 500. Simultaneously, when the smoke outlet of the smoke guiding component 600 is always located within the smoke collecting chamber 510 of the smoke collecting component 500, the opening size of the smoke outlet of the smoke guiding component 600 can be matched with the cavity size of the smoke collecting chamber 510 of the smoke collecting component 500, so that the opening size of the smoke outlet of the smoke guiding component 600 can be close to the opening size of the smoke collecting chamber 510 of the smoke collecting component 500. This can improve the efficiency of smoke being discharged from the smoke outlet of the smoke guiding component 600 into the smoke collecting chamber 510 of the smoke collecting component 500.

[0100] In other embodiments, a connecting pipe may be provided, with one end connected to the smoke outlet of the smoke guiding assembly 600 and the other end extending into the smoke collecting chamber 510 of the smoke collecting assembly 500. Alternatively, an opening communicating with the smoke collecting chamber 510 may be provided on the smoke collecting assembly 500, and the other end of the connecting pipe may be connected to the opening of the smoke collecting assembly 500. This also achieves the purpose of guiding the smoke into the smoke collecting chamber 510 of the smoke collecting assembly 500.

[0101] In some embodiments, the smoke guiding component 600 may be configured to have a first end and a second end opposite to each other, wherein the first end of the smoke guiding component 600 faces the smoke collection chamber 510 of the smoke collecting component 500, the second end of the smoke guiding component 600 faces away from the smoke collecting component 500, and the smoke outlet of the smoke guiding component 600 may be disposed at the first end of the smoke guiding component 600, so that the smoke outlet located at the first end of the smoke guiding component 600 can be connected with the smoke collection chamber 510 of the smoke collecting component 500, so as to achieve the purpose of communicating between the smoke outlet of the smoke guiding component 600 and the smoke collection chamber 510 of the smoke collecting component 500. Meanwhile, since the first end of the smoke guiding component 600 faces the smoke collection chamber 510 of the smoke collecting component 500, the smoke outlet of the smoke guiding component 600 also faces the smoke collection chamber 510 of the smoke collecting component 500. After the oil fumes are discharged through the smoke outlet of the smoke guiding component 600, they can directly enter the smoke collection chamber 510 of the smoke collecting component 500 during the rising process, thereby improving the efficiency of oil fumes entering the smoke collection chamber 510 of the smoke collecting component 500.

[0102] The smoke inlet 610 of the smoke guiding component 600 can be opened on the side wall of the smoke guiding component 600 near its second end. In this way, when the range hood is in use, the smoke guiding component 600 is located in the smoke collection chamber 510 of the smoke collection component 500, and the smoke inlet 610 of the smoke guiding component 600 is also located in the smoke collection chamber 510 of the smoke collection component 500. This allows the smoke inlet 610 of the smoke guiding component 600 to be hidden in the smoke collection chamber 510 of the smoke collection component 500, making the range hood more aesthetically pleasing when not in use. At the same time, it can also prevent foreign objects from entering the interior of the range hood through the smoke inlet 610 of the smoke guiding component 600.

[0103] In addition, the size of the opening of the smoke collection chamber 510 of the smoke collection assembly 500 can be matched with the size of the smoke guide assembly 600, so that when the smoke guide assembly 600 is located inside the smoke collection chamber 510 of the smoke collection assembly 500, the smoke guide assembly 600 can seal the opening of the smoke collection chamber 510 of the smoke collection assembly 500. This makes the overall appearance of the range hood more beautiful when it is not in use, and prevents foreign objects from entering the interior of the range hood.

[0104] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A range hood, characterized in that, It includes a smoke collection assembly (500), a smoke guiding assembly (600), a rack (520), and a limiting mechanism; The limiting mechanism includes: Substrate(100), A driver (200) is disposed on the substrate (100). The transmission component is connected to the driver (200). The driver (200) can drive the transmission component to reciprocate along a preset rotation direction, and the transmission component can form a first rotation path (700) during rotation. A movable paddle (300) is rotatably disposed on the base plate (100) and located on the first rotation path (700). During the movement of the transmission member along the first rotation path (700), the movable paddle (300) can be pushed to rotate, thereby forming a second rotation path (800). A limiting member (400) is disposed on the substrate (100), the limiting member (400) is located on the second rotation path (800) and is offset from the first rotation path (700); The second rotation path (800) is disposed around the first rotation path (700), and the limiting member (400) is located outside the first rotation path (700); The transmission component includes a first gear (230) and a protrusion (231). The protrusion (231) is disposed on the first gear (230). During the rotation of the protrusion (231), the first rotation path (700) can be formed. The smoke guide assembly (600) has a smoke inlet (610). The smoke collection assembly (500) has a smoke collection chamber (510). The smoke guide assembly (600) is movably connected to the smoke collection assembly (500). The smoke inlet (610) communicates with the smoke collection chamber (510). The rack (520) is disposed on the smoke collection assembly (500). The base plate (100) is disposed on the smoke guide assembly (600). The first gear (230) is connected to the driver (200) and meshes with the rack (520) to drive the smoke guide assembly (600) to reciprocate along a preset direction. The range hood also includes a synchronous shaft (110), a second gear (120), and a third gear (130). There are two third gears (130) and two racks (520). The two racks (520) are disposed on the inner walls of the smoke collection chamber (510) respectively. The synchronous shaft (110) passes through the base plate (100). The second gear (120) is sleeved on the synchronous shaft (110) and meshes with the first gear (230). The two third gears (130) are sleeved on the synchronous shaft (110) and mesh with the two racks (520) respectively.

2. The range hood according to claim 1, characterized in that, The driver (200) includes a drive shaft (220), the movable paddle (300) is sleeved on the drive shaft (220) and can rotate relative to the drive shaft (220), and the transmission component is connected to the drive shaft (220).

3. The range hood according to claim 2, characterized in that, The substrate (100) has a first plate surface and a second plate surface facing away from each other. The transmission member, the movable paddle (300) and the limiting member (400) are all disposed on the first plate surface. The driver (200) is disposed on the second plate surface. One end of the transmission shaft (220) is connected to the driver (200), and the other end of the transmission shaft (220) passes through the substrate (100) and is connected to the transmission member and the movable paddle (300).

4. The range hood according to claim 1, characterized in that, During the process of the driver (200) driving the first gear (230) to rotate, the smoke guide assembly (600) can reciprocate in a preset direction so that the smoke guide assembly (600) is located in the smoke collection chamber (510), or at least part of the smoke guide assembly (600) is located outside the smoke collection chamber (510).

5. The range hood according to claim 1, characterized in that, The smoke guide assembly (600) has a smoke outlet communicating with the smoke inlet (610). When the smoke guide assembly (600) is located inside the smoke collection chamber (510), and when at least part of the smoke guide assembly (600) is located outside the smoke collection chamber (510), the smoke outlet is located in the smoke collection chamber (510).

6. The range hood according to claim 5, characterized in that, The smoke guiding assembly (600) has a first end adjacent to the smoke collecting assembly (500) and a second end opposite to the smoke collecting assembly (500), the smoke inlet (610) is disposed on the side wall of the smoke guiding assembly (600) adjacent to the second end, and the smoke outlet is disposed at the first end.

7. The range hood according to claim 1, characterized in that, The protrusion (231) is eccentrically disposed on the first gear (230).

8. The range hood according to claim 1, characterized in that, The range hood also includes a slide rail (540) and a slider. The slide rail (540) is disposed on the smoke collection assembly (500), and the slider is disposed on the smoke guiding assembly (600) and embedded in the slide rail (540).

9. The range hood according to claim 8, characterized in that, The range hood also includes a mounting bracket (530), which is disposed in the smoke collection chamber (510). The rack (520) and the slide rail (540) are both disposed in the mounting bracket (530).

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