A smart home lighting device based on Internet of Things (IoT) technology

Abstract

This invention discloses a smart home lighting device based on Internet of Things (IoT) technology, belonging to the field of smart lighting equipment technology. The invention includes a smart range hood body, with a control device fixed to the right side of the body. A lighting mechanism is embedded in the bottom of the control device. The lighting mechanism includes a housing, with a lamp body fixed to the top of the inner wall of the housing. An auxiliary component is disposed below the lamp body, and a heat dissipation component for cooling the lamp body is disposed below the auxiliary component. A cleaning component is disposed below the heat dissipation component. This invention utilizes a scraper that contacts the lampshade. As the motor drives the lampshade to rotate via gears, the scraper removes grease and grime from the lampshade surface, thus preventing grease and grime from adhering to the lighting device surface, which could cause damage or blurred light, and reducing the frequency of manual cleaning.

Description

Technical Field

[0001] This invention relates to the field of intelligent lighting equipment technology, specifically to a home intelligent lighting device based on Internet of Things (IoT) technology. Background Technology

[0002] A smart range hood is a kitchen appliance designed to purify the kitchen environment. Installed above the stove, it quickly removes combustion waste and harmful fumes produced during cooking, venting them outdoors to reduce pollution, purify the air, and provides safety features such as protection against poisoning and explosions. A range hood mainly consists of a casing, air duct, fan, check valve, oil collection and drainage system, lighting, power switch, and power cord.

[0003] Existing smart range hoods often have lighting devices that become damaged or have blurred light after prolonged use due to the accumulation of grease and soot on their surface. This leads to poor visibility and makes it difficult to observe the cooking process of food in the pot on the stove. Therefore, we propose a smart home lighting device based on Internet of Things (IoT) technology. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a smart home lighting device based on Internet of Things (IoT) technology, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a smart home lighting device based on Internet of Things (IoT) technology, comprising a smart range hood body, a control device fixed to the right side of the smart range hood body, an IoT module fixed to the right side of the control device, a lighting mechanism embedded at the bottom of the control device, the lighting mechanism comprising a housing, a second protective plate and a first protective plate fixed to the left and right sides of the housing respectively, a sludge collection box slidably installed on the bottom right side of the second protective plate, a motor fixed to the left side of the inner wall of the first protective plate, a gear fixed to the output end of the motor, a lamp body fixed to the top of the inner wall of the housing, an auxiliary component disposed below the lamp body, a heat dissipation component disposed below the auxiliary component for dissipating heat from the lamp body, and a cleaning component disposed below the heat dissipation component for cleaning oil fumes adhering to the surface of the lighting device.

[0006] Preferably, the cleaning component includes a connecting plate, which is embedded in the bottom of the housing. A scraper is embedded in the bottom of the connecting plate, and a grooved plate is fixed to the bottom of the scraper. An elastic plate is fixed to the left side of the grooved plate, and a reset spring is provided between the elastic plate and the connecting plate. An abutment rod is fixed to the top right side of the elastic plate and is located below the reset spring. A sealing cavity is formed inside the scraper, and an elastic plug rod is slidably installed through the top of the sealing cavity. A sliding plug rod is slidably installed inside the sealing cavity, and an L-shaped impact rod is fixed to the top of the sliding plug rod. A vibration rod is fixed to the top of the inner wall of the sealing cavity.

[0007] Preferably, the heat dissipation assembly includes a lampshade that rotates inside the housing of the mechanism. A gear ring is fixed to the top of the lampshade and meshes with a gear. A fan blade is hinged to the top of the gear ring. A positive magnetic block is fixed to the top of the fan blade. A tension spring is provided between the fan blade and the gear ring. A striking rod is fixed to the left side of the fan blade and is located below the tension spring.

[0008] Preferably, the auxiliary component includes a circular groove plate, which is embedded in the bottom of the lamp body. A fixing frame is fixed to the top of the circular groove plate. A negative magnetic block slides inside the fixing frame. An abutment plate is fixed to the front of the negative magnetic block. A memory spring is provided between the top of the negative magnetic block and the top of the inner wall of the fixing frame.

[0009] Preferably, the bottom of the abutment rod contacts the top of the elastic plug rod, and the elastic element in the elastic plug rod is in a stretched state.

[0010] Preferably, the top of the scraper contacts the bottom of the lampshade, a protrusion is fixed on the right side of the elastic plate, and the protrusion fixed on the right side of the elastic plate contacts the left side of the contact plate.

[0011] Preferably, the fan blades are inclined, and the bottom of the striking rod contacts the top of the toothed ring.

[0012] This invention provides a smart home lighting device based on Internet of Things (IoT) technology. It has the following advantages:

[0013] (1) The present invention uses a scraper to contact the lampshade. During the process of the motor driving the lampshade to rotate through gears, the scraper scrapes off the oil and smoke on the surface of the lampshade, thereby avoiding the problem of oil and smoke adhering to the surface of the lighting device, causing damage or blurry light. This reduces the frequency of manual cleaning of the lighting device. At the same time, the cleaned oil and smoke will slide into the inside of the groove plate. The inclined setting of the groove plate accelerates the flow of oil and smoke into the inside of the sludge collection box.

[0014] (2) The present invention uses a toothed ring and a fan blade to make the toothed ring drive the fan blade to rotate, and the fan blade generates airflow. The airflow flows through the circular groove on the circular groove plate to the outside of the lamp body, thereby blowing air to dissipate heat from the lamp body. This avoids the problem of the lamp body being damaged due to excessive temperature after long-term use, and thus improves the service life of the lamp body.

[0015] (3) In this invention, the negative magnetic block and the positive magnetic block work together. Whenever the fan blade rotates to the bottom of the negative magnetic block, the negative magnetic block will attract the positive magnetic block, causing the fan blade to flip. This causes the fan blade to drive the striking rod to flip as well, and the stretching spring is stretched. When the negative magnetic block moves away from the positive magnetic block, the negative magnetic block will not attract the positive magnetic block. The stretching spring will reset the fan blade. The fan blade will drive the striking rod to strike the toothed ring, thereby causing the toothed ring and the lampshade to vibrate. The lampshade will shake off the dust attached to the surface, thus avoiding the problem that the lampshade has dust attached to it, resulting in poor cleaning effect of the scraper on the lampshade surface. This improves the cleaning efficiency of the scraper on the lampshade.

[0016] (4) By setting a memory spring, when the temperature of the lamp body is too high or the temperature is too high during cooking, the memory spring will shrink due to heat. The memory spring will drive the negative magnetic block and the contact plate to move upward. With the cooperation of the contact plate and the protrusion on the right side of the elastic plate, the contact plate will vibrate against the elastic plate. The elastic plate will drive the groove plate to vibrate, thereby further accelerating the speed at which the oil fumes flow from the groove plate into the sludge collection box and improving the oil fume collection efficiency. At the same time, the fan blades will rotate to the bottom of the negative magnetic block, and the negative magnetic block will no longer attract the negative magnetic block. The fan blades can then blow air to the lamp body to dissipate heat normally.

[0017] (5) By setting the abutment rod, the elastic plate drives the abutment rod to flip during the vibration process when the abutment plate abuts against the elastic plate, so that the abutment rod no longer abuts against the elastic plug rod. The elastic element in the elastic plug rod resets the elastic plug rod. The elastic plug rod draws air from the sealed cavity, causing the sliding plug rod to drive the L-shaped impact rod to move to the left. When the abutment rod abuts against the elastic plug rod again, the abutment rod presses the elastic plug rod to move downward, thereby causing the abutment rod to push the sliding plug rod and the L-shaped impact rod to move to the right. The L-shaped impact rod strikes the vibrating rod, thereby causing the scraper to vibrate, which in turn accelerates the speed at which the oil fumes scraped by the scraper flow into the groove plate, and improves the cleaning efficiency of the scraper on the lamp cover. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the entire invention;

[0019] Figure 2 This is a schematic diagram of the lighting mechanism of the present invention;

[0020] Figure 3 This is a bottom view schematic diagram of the lighting mechanism of the present invention;

[0021] Figure 4 This is a partial cross-sectional schematic diagram of the lighting mechanism of the present invention;

[0022] Figure 5 This is a schematic diagram of the cleaning component of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point A;

[0024] Figure 7 This is a cross-sectional front view of the scraper of the present invention;

[0025] Figure 8 This is a schematic diagram of the heat dissipation component of the present invention;

[0026] Figure 9 For the present invention Figure 8 Enlarged view of point B;

[0027] Figure 10 This is a schematic diagram of the auxiliary components of the present invention.

[0028] In the diagram: 1. Main body of the intelligent range hood; 2. Control device; 3. IoT module; 4. Lighting mechanism; 41. Mechanism shell; 42. First guard plate; 43. Second guard plate; 44. Sludge collection box; 45. Cleaning component; 451. Connecting plate; 452. Groove plate; 453. Scraper; 454. Elastic plate; 455. Abutment rod; 456. Sealing cavity; 457. Elastic plug rod; 458. Sliding plug rod; 459. L-shaped impact rod; 460. Vibration rod; 46. Heat dissipation component; 461. Lampshade; 462. Gear ring; 463. Fan blade; 464. Striking rod; 465. Positive magnetic block; 47. Auxiliary component; 471. Circular groove plate; 472. Fixing frame; 473. Memory spring; 474. Negative magnetic block; 475. Abutment plate; 48. Motor; 49. Gear; 410. Lighting fixture body. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Please see Figure 1-10This invention provides a technical solution: a smart home lighting device based on Internet of Things (IoT) technology, comprising a smart range hood body 1, a control device 2 fixed to the right side of the smart range hood body 1, an IoT module 3 fixed to the right side of the control device 2, a lighting mechanism 4 embedded at the bottom of the control device 2, the lighting mechanism 4 comprising a mechanism housing 41, a second guard plate 43 and a first guard plate 42 fixed to the left and right sides of the mechanism housing 41 respectively, the second guard plate 43 being in communication with the mechanism housing 41, a sludge collection box 44 being slidably installed on the bottom right side of the second guard plate 43, a motor 48 fixed to the left side of the inner wall of the first guard plate 42, a gear 49 fixed to the output end of the motor 48, a lamp body 410 fixed to the top of the inner wall of the mechanism housing 41, an auxiliary component 47 being provided below the lamp body 410, a heat dissipation component 46 for dissipating heat from the lamp body 410 being provided below the auxiliary component 47, and a cleaning component 45 for cleaning oil fumes adhering to the surface of the lighting device being provided below the heat dissipation component 46.

[0031] The cleaning component 45 includes a connecting plate 451, which is embedded in the bottom of the housing 41. A scraper 453 is embedded in the bottom of the connecting plate 451. The bottom of the scraper 453 is inclined, and the top of the scraper 453 contacts the bottom of the lampshade 461. Through this contact between the scraper 453 and the lampshade 461, the motor 48 drives the lampshade 461 to rotate via the gear 49, causing the scraper 453 to scrape away the oil and soot on the surface of the lampshade 461. This prevents oil and soot from adhering to the surface of the lighting device, causing damage or blurred light, and reduces the frequency of manual cleaning of the lighting device. Simultaneously, the cleaned oil and soot slides into the recessed plate 452, and the bottom of the scraper 453 is fixed... A grooved plate 452 is provided, which is inclined, with its left side positioned above the sludge collection box 44. This inclined arrangement accelerates the flow of oil fumes into the sludge collection box 44. An elastic plate 454 is fixed to the left side of the grooved plate 452, and a protrusion is fixed to the right side of the elastic plate 454. The protrusion on the right side of the elastic plate 454 contacts the left side of the contact plate 475. A reset spring is provided between the elastic plate 454 and the connecting plate 451. An abutment rod 455 is fixed to the top right side of the elastic plate 454, and the abutment rod 455 is located below the reset spring. A sealing cavity 456 is formed inside the scraper 453, and a slidingly mounted part is installed through the top of the sealing cavity 456. The bottom of the elastic stopper rod 457 and the top of the abutment rod 455 are in contact. The elastic element in the elastic stopper rod 457 is in a stretched state. A sliding stopper rod 458 is slidably installed inside the sealing cavity 456. An L-shaped impact rod 459 is fixed to the top of the sliding stopper rod 458. A vibration rod 460 is fixed to the top of the inner wall of the sealing cavity 456. There are several L-shaped impact rods 459 and vibration rods 460. These L-shaped impact rods 459 and vibration rods 460 are evenly arranged inside the scraper 453. Due to the arrangement of the abutment rod 455, during the vibration process when the abutment plate 475 abuts against the elastic plate 454, the elastic plate 454 drives the abutment rod 455 to rotate, so that the abutment rod 455 no longer... When the elastic stopper 457 is abutted, the elastic element in the elastic stopper 457 resets the elastic stopper 457. The elastic stopper 457 draws air from the sealed cavity 456, causing the sliding stopper 458 to drive the L-shaped impact rod 459 to move to the left. When the abutting rod 455 abuts the elastic stopper 457 again, the abutting rod 455 presses the elastic stopper 457 downward, thereby causing the abutting rod 455 to push the sliding stopper 458 and the L-shaped impact rod 459 to move to the right. The L-shaped impact rod 459 strikes the vibrating rod 460, thereby causing the scraper 453 to vibrate, which in turn accelerates the flow of the oil fumes scraped by the scraper 453 into the groove plate 452, improving the cleaning efficiency of the scraper 453 on the lamp cover 461.

[0032] The heat dissipation assembly 46 includes a lampshade 461, which rotates inside the housing 41. A gear ring 462 is fixed to the top of the lampshade 461, meshing with a gear 49. A fan blade 463 is hinged to the top of the gear ring 462. Several fan blades 463 are evenly distributed in a ring on the top of the gear ring 462. The fan blades 463 are inclined. Through the engagement of the gear ring 462 and the fan blades 463, the gear ring 462 drives the fan blades 463 to rotate, generating airflow. The airflow passes through the circular groove. The circular groove on 471 flows to the outside of the lamp body 410, thereby blowing air to dissipate heat from the lamp body 410, thus avoiding the problem of damage caused by excessive temperature after long-term use of the lamp body 410, and thus improving the service life of the lamp body 410. A positive magnetic block 465 is fixed on the top of the fan blade 463. A tension spring is provided between the fan blade 463 and the toothed ring 462. A striking rod 464 is fixed on the left side of the fan blade 463, and the striking rod 464 is located below the tension spring. The bottom of the striking rod 464 contacts the top of the toothed ring 462.

[0033] The auxiliary component 47 includes a circular slotted disk 471, which is embedded in the bottom of the lamp body 410. The circular slotted disk 471 has several circular slots, evenly distributed on its top. A fixing frame 472 is fixed to the top of the circular slotted disk 471. A negative magnetic block 474 slides inside the fixing frame 472, directly below the positive magnetic block 465. Through the cooperation of the negative magnetic block 474 and the positive magnetic block 465, whenever the fan blade 463 rotates to a position below the negative magnetic block 474, the negative magnetic block 474 will align with the positive magnetic block 465. The magnetic block 465 attracts the fan blade 463, causing it to rotate. This, in turn, causes the striking rod 464 to rotate as well, stretching the tension spring. When the negative magnetic block 474 moves away from the positive magnetic block 465, it no longer attracts the positive magnetic block 465. The tension spring then resets the fan blade 463, which in turn causes the striking rod 464 to strike the toothed ring 462. This causes the toothed ring 462 and the lampshade 461 to vibrate, shaking off dust from the lampshade 461 and preventing dust from adhering to its surface. This prevents the scraper 453 from further damaging the lampshade 461. To address the issue of poor surface cleaning of the lampshade 461, the cleaning efficiency of the scraper 453 on the lampshade 461 is improved. A contact plate 475 is fixed to the front of the negative magnetic block 474. A memory spring 473 is installed between the top of the negative magnetic block 474 and the top of the inner wall of the fixing frame 472. The memory spring 473 is a high-temperature shortening double-stroke memory alloy spring. Due to the setting of the memory spring 473, when the temperature of the lamp body 410 is too high or the temperature is too high during cooking, the memory spring 473 contracts due to heat, causing the negative magnetic block 461 to... 74 and the contact plate 475 move upward. With the contact plate 475 cooperating with the protrusion on the right side of the elastic plate 454, the contact plate 475 vibrates against the elastic plate 454. The elastic plate 454 drives the groove plate 452 to vibrate as well, thereby further accelerating the speed at which the oil fumes flow from the groove plate 452 into the sludge collection box 44, improving the oil fume collection efficiency. At the same time, the fan blade 463 rotates to the area below the negative magnetic block 474, and the negative magnetic block 474 no longer attracts the negative magnetic block 474. The fan blade 463 can then blow air to the lamp body 410 for heat dissipation normally.

[0034] In use, the main body 1 of the smart range hood is controlled by the IoT module 3 to start the lighting device. During the use of the lighting device while cooking, the motor 48 is started, the motor 48 drives the gear 49 to rotate, the gear 49 drives the gear ring 462 to rotate, and the lampshade 461 rotates accordingly. The scraper 453 contacts the lampshade 461, so that the scraper 453 scrapes off the oil and smoke on the surface of the lampshade 461, thereby avoiding the problem of oil and smoke adhering to the surface of the lighting device, causing damage or blurred light. This reduces the frequency of manual cleaning of the lighting device. At the same time, the cleaned oil and smoke will slide into the inside of the groove plate 452. The inclined setting of the groove plate 452 accelerates the flow of oil and smoke into the inside of the sludge collection box 44.

[0035] Meanwhile, as the gear ring 462 rotates, it drives the fan blade 463 to rotate as well. The fan blade 463 generates airflow, which flows through the circular groove on the circular groove plate 471 to the outside of the lamp body 410, thereby blowing air to dissipate heat from the lamp body 410. This avoids the problem of the lamp body 410 being damaged due to excessive temperature after long-term use, thus improving the service life of the lamp body 410. Finally, the airflow will flow out from the second protective plate 43.

[0036] Simultaneously, whenever the fan blade 463 rotates to the area below the negative magnetic block 474, the negative magnetic block 474 attracts the positive magnetic block 465, causing the fan blade 463 to flip. This causes the fan blade 463 to drive the striking rod 464 to flip as well, stretching the tension spring. When the negative magnetic block 474 moves away from the positive magnetic block 465, the negative magnetic block 474 no longer attracts the positive magnetic block 465, and the tension spring resets the fan blade 463. The fan blade 463 then drives the striking rod 464 to strike the toothed ring 462, causing the toothed ring 462 and the lampshade 461 to vibrate. This shakes off the dust adhering to the surface of the lampshade 461, thus avoiding the problem of dust adhering to the lampshade 461, which leads to poor cleaning effect of the scraper 453 on the surface of the lampshade 461. This improves the cleaning efficiency of the scraper 453 on the lampshade 461.

[0037] When the temperature of the lamp body 410 is too high or during cooking, the memory spring 473 contracts due to heat. The memory spring 473 drives the negative magnetic block 474 and the contact plate 475 to move upward. With the cooperation of the contact plate 475 and the protrusion on the right side of the elastic plate 454, the contact plate 475 vibrates against the elastic plate 454. The elastic plate 454 drives the groove plate 452 to vibrate as well, thereby further accelerating the speed at which the oil fumes flow from the groove plate 452 into the sludge collection box 44, improving the oil fume collection efficiency. At the same time, the fan blade 463 rotates to the area below the negative magnetic block 474, and the negative magnetic block 474 no longer attracts the negative magnetic block 474. The fan blade 463 can then blow air to the lamp body 410 for heat dissipation.

[0038] Simultaneously, during the vibration process of the contact plate 475 contacting the elastic plate 454, the elastic plate 454 drives the contact rod 455 to flip, so that the contact rod 455 no longer contacts the elastic plug rod 457. The elastic element in the elastic plug rod 457 resets the elastic plug rod 457. The elastic plug rod 457 draws air from the sealing cavity 456, causing the sliding plug rod 458 to drive the L-shaped impact rod 459 to move to the left. When the contact rod 455 contacts the elastic plug rod 457 again, the contact rod 455 presses the elastic plug rod 457 downward, thereby causing the contact rod 455 to push the sliding plug rod 458 and the L-shaped impact rod 459 to move to the right. The L-shaped impact rod 459 strikes the vibrating rod 460, thereby causing the scraper 453 to vibrate, which in turn accelerates the flow of the oil fumes scraped by the scraper 453 into the groove plate 452, improving the cleaning efficiency of the scraper 453 on the lamp cover 461.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A domestic smart lighting device based on Internet of Things technology, comprising a smart range hood body (1), characterized in that: The right side of the intelligent range hood body (1) is fixed with a control device (2), the right side of the control device (2) is fixed with an internet of things module (3), the bottom of the control device (2) is embedded with an illumination mechanism (4), the illumination mechanism (4) comprises a mechanism shell (41), the left side and the right side of the mechanism shell (41) are respectively fixed with a second baffle (43) and a first baffle (42), the bottom right side of the second baffle (43) is slidably installed with a dirt collecting box (44), the inner wall left side of the first baffle (42) is fixed with a motor (48), the output end of the motor (48) is fixed with a gear (49), the inner wall top of the mechanism shell (41) is fixed with a lamp body (410), the lower side of the lamp body (410) is provided with an auxiliary assembly (47), the lower side of the auxiliary assembly (47) is provided with a heat dissipation assembly (46) for heat dissipation of the lamp body (410), the lower side of the heat dissipation assembly (46) is provided with a cleaning assembly (45) for cleaning oil fume attached to the surface of the illumination device; The heat dissipation assembly (46) comprises a lampshade (461), the lampshade (461) rotates in the inside of the mechanism shell (41), the top of the lampshade (461) is fixed with a gear ring (462), the gear ring (462) is engaged with the gear (49), the top of the gear ring (462) is hinged with a fan blade (463), the top of the fan blade (463) is fixed with a positive magnetic block (465), the fan blade (463) and the gear ring (462) are provided with a stretch spring plate therebetween, the left side of the fan blade (463) is fixed with a knocking rod (464), and the knocking rod (464) is below the stretch spring plate.

2. The smart home lighting device based on the Internet of Things technology according to claim 1, characterized in that: The cleaning assembly (45) comprises a connecting plate (451), the connecting plate (451) is embedded in the bottom of the mechanism shell (41), the bottom of the connecting plate (451) is embedded with a scraper (453), the bottom of the scraper (453) is fixed with a groove plate (452), the left side of the groove plate (452) is fixed with an elastic plate (454), the elastic plate (454) and the connecting plate (451) are provided with a reset spring plate therebetween, the right side top of the elastic plate (454) is fixed with a resisting rod (455), and the resisting rod (455) is below the reset spring plate, the inside of the scraper (453) is provided with a sealed cavity (456), the top of the sealed cavity (456) penetrates and slidably installs an elastic plug rod (457), the inside of the sealed cavity (456) slidably installs a sliding plug rod (458), the top of the sliding plug rod (458) is fixed with an L-shaped impact rod (459), the inner wall top of the sealed cavity (456) is fixed with a vibrating rod (460). 3.The smart home lighting device based on the Internet of Things technology according to claim 1, characterized in that: The auxiliary assembly (47) comprises a circular groove disc (471) fixedly arranged at the bottom of the lamp body (410), a fixed frame (472) fixedly arranged at the top of the circular groove disc (471), a negative magnetic block (474) slidingly arranged in the fixed frame (472), a contact plate (475) fixedly arranged at the front face of the negative magnetic block (474), and a memory spring (473) arranged between the top of the negative magnetic block (474) and the inner wall top of the fixed frame (472).

4. The smart home lighting device based on the Internet of Things technology according to claim 2, characterized in that: The bottom of the contact rod (455) is in contact with the top of the elastic plug rod (457), and the elastic element in the elastic plug rod (457) is in a stretched state. 5.The smart home lighting device based on the Internet of Things technology according to claim 2, characterized in that: The top of the scraper (453) is in contact with the bottom of the lampshade (461), the right side of the elastic plate (454) is fixedly provided with a protrusion, and the protrusion fixedly arranged at the right side of the elastic plate (454) is in contact with the left side of the contact plate (475). 6.The smart home lighting device based on the Internet of Things technology according to claim 1, characterized in that: The fan blade (463) is arranged in an inclined mode, and the bottom of the knocking rod (464) is in contact with the top of the tooth ring (462).

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