Inner disc lifting device and cooking equipment

Abstract

The utility model discloses a kind of inner disc lifting device and cooking equipment, it relates to the technical field of cooking electrical appliances, its inner disc lifting device, including mutually independent driving component and lifting component, the lifting component includes lifting shell, lifting rod is movably connected in the lifting shell, the lifting shell is equipped with sub-level magnetic assembly and speed reduction transmission assembly, the driving component includes driving motor and parent-level magnetic assembly, when starting driving motor, driving motor starts operation, its output end drives parent-level magnetic assembly to rotate, using the characteristics that same pole repels, different pole attracts between magnet, parent-level magnetic assembly drives sub-level magnetic assembly to rotate, power is transmitted to speed reduction transmission assembly connected with transmission, driving lifting rod, make lifting rod do linear lifting motion on lifting shell;Since driving component and lifting component are connected by magnetic transmission, avoid the waterproof problem caused by motor and push rod integration in traditional design.

Description

Technical Field

[0001] This utility model relates to the technical field of cooking appliances, specifically an inner plate lifting device and cooking equipment. Background Technology

[0002] The inner plate lifting device is a key functional module widely used in cooking equipment (such as lifting hot pots, sugar-reducing rice cookers, etc.). Its main function is to realize the automatic lifting of the cooking plate so that users can perform cooking operations more conveniently. Traditional inner plate lifting devices usually use a motor-driven method to complete the lifting action of the push rod. Its working principle is to use the active power output of the motor to convert the rotational motion of the motor into the linear motion of the push rod through gears, pulleys or other transmission devices, thereby realizing the lifting function of the inner plate.

[0003] Traditional internal plate lifting devices typically employ an integrated design of the motor and push rod, where the motor is directly connected to the push rod via gears or other mechanical connectors for power transmission. While this design is simple, it increases the complexity of the device and limits the ease of operation for users. For example, when users need to disassemble or replace parts, they often have to handle the entire device at once, making quick separation impossible. Furthermore, this integrated design struggles to meet the requirements of modular functionality, limiting the device's functional expansion and compatibility.

[0004] In certain cooking scenarios, the inner plate lifting device may need to come into contact with liquids, such as during washing or certain cooking processes. However, the integrated design of the motor and push rod in the traditional structure makes it difficult to achieve effective waterproof sealing of the motor, which can easily lead to water leakage and even electric leakage, posing a significant safety hazard.

[0005] Because the motor and push rod components are tightly coupled, damage to any part will affect the normal operation of the entire device, making the maintenance and replacement process more complicated and time-consuming. For example, if a component in the motor or push rod fails, the user may need to replace the entire device instead of just the damaged part.

[0006] The forced connection between the motor components and the push rod not only restricts the separation operation of the device, but also affects the operational flexibility of the equipment to a certain extent. For example, when users need to clean the device or adjust the position of the inner plate, they may feel inconvenienced by the complex structure of the device and be unable to complete the operation quickly, thereby reducing the user experience.

[0007] In conclusion, while traditional motor-driven inner plate lifting devices have some practicality in terms of functionality, they still have significant shortcomings in terms of modular design, waterproof performance, ease of maintenance, and user experience.

[0008] This utility model was proposed in response to the shortcomings of the existing technology. Utility Model Content

[0009] While the traditional motor-driven inner plate lifting device mentioned above has some practicality in terms of functionality, it still has significant shortcomings in terms of modular design, waterproof performance, ease of maintenance, and user experience.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] An inner disc lifting device includes independent drive components and lifting components. The lifting component includes a lifting housing, a lifting rod is movably connected to the lifting housing, a sub-magnetic component and a speed reduction transmission component are provided inside the lifting housing, the sub-magnetic component is located at the bottom of the lifting housing, and the speed reduction transmission component is located between the sub-magnetic component and the lifting rod, and is respectively connected to both in a transmission manner.

[0012] The driving component includes a drive motor and a female magnetic component disposed on the output end of the drive motor. The female magnetic component and the female magnetic component are correspondingly arranged. The drive motor can drive the female magnetic component to rotate, so that the female magnetic component drives the female magnetic component to rotate, thereby driving the reduction transmission component to drive the lifting rod to lift and lower on the lifting housing.

[0013] As described above, the inner disc lifting device includes a reduction transmission assembly comprising a first transmission mechanism, a reduction gear set, and a second transmission mechanism arranged sequentially from bottom to top. The first transmission mechanism is connected to the reduction gear set and the sub-stage magnetic assembly, respectively, and the second transmission mechanism is connected to the reduction gear set and the lifting rod, respectively.

[0014] As described above, in an inner disc lifting device, the reduction gear set includes a first gear carrier, the bottom of which is provided with a plurality of first input shafts arranged in a ring array, each of the first input shafts being provided with a first planetary gear, the first transmission mechanism including a first sun gear meshing with the plurality of corresponding first planetary gears, and a first gear ring member meshing with the plurality of first planetary gears being provided between the lifting housing and the first gear carrier.

[0015] As described above, the inner disc lifting device includes a reduction gear set comprising a first gear frame and a second gear frame arranged sequentially from top to bottom. The bottom of the first gear frame is provided with a plurality of first input shafts arranged in a ring array. Each of the first input shafts is provided with a first planetary gear. A first gear ring component that meshes with the plurality of first planetary gears is provided between the lifting housing and the first gear frame.

[0016] The bottom of the second gear frame is provided with a plurality of second input shafts arranged in a ring array. Each of the second input shafts is provided with a second planetary gear. A second gear ring component that meshes with the plurality of second planetary gears is provided between the lifting housing and the second gear frame.

[0017] The first transmission mechanism includes a first sun gear that meshes with multiple corresponding second planetary gears;

[0018] The top of the second gear carrier is provided with a second sun gear that meshes with multiple corresponding first planetary gears.

[0019] As described above, in an inner disc lifting device, there are multiple second gear frames, which are stacked on top of each other. The second sun gear of the topmost second gear frame meshes with multiple corresponding first planetary gears.

[0020] The second sun gear of the adjacent second gear carrier located below one of the second gear carriers meshes with a plurality of corresponding second planetary gears;

[0021] The second planetary gears of the second gear carrier at the bottom are all meshed with the first sun gear.

[0022] In the inner plate lifting device described above, both the first gear ring component and the second gear ring component are longitudinal teeth provided on the inner wall of the lifting housing.

[0023] As described above, in an inner disc lifting device, the second transmission mechanism includes a drive rod component disposed on the top of the first gear frame, the free end of the drive rod component extending into the lifting rod, and the two being threadedly connected.

[0024] As described above, in an inner plate lifting device, the top inner wall of the lifting housing is provided with an assembly groove, and an annular sealing ring is installed in the assembly groove. The inner wall of the annular sealing ring abuts against the outer wall of the lifting rod.

[0025] As described above, in an inner disc lifting device, the main magnetic component includes a main mounting bracket connected to the output end of a drive motor and a main magnet component disposed on the main mounting bracket. The sub-magnetic component includes a sub-mounting bracket connected to a speed reduction transmission component and a sub-magnet component disposed on the sub-mounting bracket. The sub-magnet component corresponds to the main magnetic component.

[0026] A cooking device includes a pot body, an inner plate, and an inner plate lifting device as described in any of the above. The driving component is located on the outer side of the bottom of the pot body, the lifting component is located on the inner side of the bottom of the pot body, and the lifting rod can drive the inner plate to move up and down inside the pot body while moving up and down on the lifting housing.

[0027] The beneficial effects of this utility model are as follows:

[0028] This utility model relates to the technical field of cooking appliances, specifically an inner plate lifting device and a cooking appliance using the same device. The inner plate lifting device includes independent drive components and lifting components. The lifting component includes a lifting housing, to which a lifting rod is movably connected. The lifting housing contains a sub-magnetic component and a reduction transmission component. The drive component includes a drive motor and a main magnetic component. When the drive motor is started, it rotates, and its output drives the main magnetic component to rotate. Utilizing the properties of like poles repelling and unlike poles attracting between magnets, the main magnetic component drives the sub-magnetic component to rotate, transmitting power to the reduction transmission component connected to it, thus driving the lifting rod to perform a linear lifting motion on the lifting housing. Because the drive component and the lifting component are connected by magnetic transmission, the waterproofing problem caused by the integrated motor and push rod design in traditional designs is avoided.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of an inner plate lifting device according to the present invention;

[0031] Figure 2 This is a top view schematic diagram of an inner plate lifting device according to the present invention;

[0032] Figure 3 for Figure 2 Cross-sectional view along line AA;

[0033] Figure 4 This is an exploded view of an inner disc lifting device according to the present invention;

[0034] Figure 5 This is one of the exploded view diagrams of the reduction gear set of the present invention;

[0035] Figure 6 This is the second exploded view of the reduction gear set of the present invention;

[0036] Figure 7 This is a schematic diagram of another embodiment of the reduction gear set of the present invention;

[0037] Figure 8 This is a schematic diagram of another embodiment of the reduction gear set of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of the lifting housing concealing the bottom and top of the present invention;

[0039] Figure 10This is a schematic diagram of the structure of another embodiment of the magnetic component of the present invention;

[0040] Figure 11 This is a schematic diagram of the inner plate lifting device and the structure after the inner plate is installed according to the present invention;

[0041] Figure 12 This is a schematic diagram of the structure of the cooking device of the present invention. Detailed Implementation

[0042] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0043] like Figures 1 to 12 As shown, an inner disc lifting device in this embodiment includes an independent drive component 1 and a lifting component 2. The lifting component 2 includes a lifting housing 21, and a lifting rod 22 is movably connected to the lifting housing 21. The lifting housing 21 is provided with a sub-magnetic component 23 and a speed reduction transmission component 24. The sub-magnetic component 23 is located at the bottom of the lifting housing 21, and the speed reduction transmission component 24 is located between the sub-magnetic component 23 and the lifting rod 22, and is respectively connected to both in a transmission manner.

[0044] The driving component 1 includes a driving motor 11 and a parent magnetic component 12 disposed on the output end of the driving motor 11. The parent magnetic component 12 and the child magnetic component 23 are correspondingly arranged. The driving motor 11 can drive the parent magnetic component 12 to rotate, so that the parent magnetic component 12 drives the child magnetic component 23 to rotate, thereby driving the reduction transmission component 24 to drive the lifting rod 22 to lift and lower on the lifting housing 21.

[0045] Specifically, when the drive motor 11 is started, the drive motor 11 starts to run, and its output end drives the mother magnetic component 12 to rotate. Since the mother magnetic component 12 and the daughter magnetic component 23 are set in correspondence, the magnetic field change generated by the rotation of the mother magnetic component 12 will be transmitted to the daughter magnetic component 23 by utilizing the characteristics of like poles repelling and unlike poles attracting between magnets, thereby driving the daughter magnetic component 23 to rotate.

[0046] After the sub-magnetic component 23 rotates, it transmits power to the reduction transmission component 24 connected to it. The reduction transmission component 24 will reduce the speed and increase the torque, and output the appropriate power to the lifting rod 22.

[0047] The speed reduction transmission assembly 24 drives the lifting rod 22 connected to it, so that the lifting rod 22 makes a linear lifting motion on the lifting housing 21, thereby realizing the lifting function of the inner plate.

[0048] The drive unit 1 and the lifting unit 2 are independent modules that achieve power output through magnetic transmission. This separate design simplifies the structure of the device, reduces overall complexity, and facilitates disassembly, maintenance, and replacement. Users can operate the lifting unit independently without needing to concern themselves with the complexity of the drive unit.

[0049] Because the drive component 1 and the lifting component 2 are connected by magnetic transmission, the waterproofing problem caused by the integration of the motor and the push rod in traditional designs is avoided. The drive component 1 can be effectively sealed to prevent liquid intrusion, while the lifting component 2 will not affect the safety of the drive component even if it comes into contact with liquid, thereby reducing the risk of water leakage and electric shock.

[0050] The independent design of the drive component 1 and the lifting component 2 makes the installation process more flexible. The drive component and the lifting component can be installed separately according to the actual space layout and usage requirements, reducing the installation difficulty.

[0051] The magnetic drive has a certain overload protection function. When the lifting rod 22 encounters excessive resistance (such as being stuck by a foreign object), the magnetic drive will automatically slip to a certain extent, preventing the drive motor 11 from being damaged due to overload and protecting the safe operation of the entire device.

[0052] The modular design makes maintenance and replacement more convenient. Users can replace only the damaged modules as needed without replacing the entire device. The separate design of the drive component 1 and the lifting component 2 allows users to operate the lifting device more flexibly. For example, users can disassemble the lifting component separately for cleaning or adjustment, while the drive component 1 can remain fixed to avoid damage to the drive system due to cleaning.

[0053] The inner disc lifting device in this embodiment overcomes many shortcomings of traditional motor-driven lifting devices through its separate design and magnetic transmission technology. Its working principle is based on the driving component driving the lifting component to rotate through magnetic action, and the smooth lifting of the inner disc is achieved through reduction gears. This design not only improves waterproof performance, ease of maintenance and safety, but also optimizes the user experience and has broad application prospects.

[0054] like Figures 1 to 12 As shown, the speed reduction transmission assembly 24 of this embodiment includes a first transmission mechanism 25, a speed reduction gear set 26 and a second transmission mechanism 27 arranged sequentially from bottom to top. The first transmission mechanism 25 is connected to the speed reduction gear set 26 and the sub-stage magnetic assembly 23 respectively, and the second transmission mechanism 27 is connected to the speed reduction gear set 26 and the lifting rod 22 respectively.

[0055] Specifically, the sub-magnetic component 23 rotates under the drive of the parent magnetic component 12, transmitting power to the first transmission mechanism 25 connected to it. The first transmission mechanism 25 receives the power from the sub-magnetic component 23 and transmits it to the reduction gear set 26. The reduction gear set 26 is composed of multiple gears with different numbers of teeth meshing with each other. The speed is reduced and the torque is increased through the gear transmission ratio. Specifically, when the small gear drives the large gear to rotate, the speed of the large gear will be lower than that of the small gear, and the torque will increase accordingly, thereby converting the input high-speed low-torque power into low-speed high-torque power.

[0056] The power after being reduced in speed and increased in torque by the reduction gear set 26 is transmitted to the second transmission mechanism 27. The second transmission mechanism 27 further transmits the power output by the reduction gear set 26 to the lifting rod 22, driving the lifting rod 22 to move up and down on the lifting housing 21.

[0057] By setting up the first transmission mechanism 25, the reduction gear set 26, and the second transmission mechanism 27, the effect of multi-stage reduction is achieved. Multi-stage reduction can more accurately adjust the speed and torque, so that the lifting speed and force of the lifting rod 22 can better meet the actual needs. Multi-stage reduction can achieve speed and torque adjustment within a wider range, improving the adaptability and flexibility of the device.

[0058] The multi-stage transmission design distributes the power transmission process across multiple transmission mechanisms and gears, preventing any single component from bearing an excessive load. This reduces wear on each component, extends its service life, and improves the reliability and stability of the entire reduction gear assembly 24. For example, multiple gears in the reduction gear set 26 share the task of transmitting power, reducing the risk of damage to any single gear.

[0059] This layered structure makes better use of the space inside the lifting housing 21. The various transmission mechanisms and gear sets can be arranged reasonably according to the size and shape of the space, making the structure of the entire speed reduction transmission assembly 24 more compact. It can realize complex transmission functions in a limited space, which is conducive to the miniaturization design of the device and is suitable for application scenarios with high space requirements.

[0060] Since the speed reduction transmission assembly 24 is composed of multiple relatively independent transmission mechanisms, if a certain transmission mechanism fails, only that mechanism needs to be repaired or replaced without affecting other parts. This greatly reduces maintenance costs and difficulty and improves the maintainability of the equipment. For example, if the first transmission mechanism 25 has a problem, only the first transmission mechanism 25 needs to be dealt with separately, without having to disassemble and repair the entire speed reduction transmission assembly 24 on a large scale.

[0061] like Figures 1 to 12As shown, the reduction gear set 26 of this embodiment includes a first gear carrier 261 and a second gear carrier 264 arranged sequentially from top to bottom. The bottom of the first gear carrier 261 is provided with a plurality of first input shafts 262 arranged in a ring array. Each of the first input shafts 262 is provided with a first planetary gear 263. A first gear ring component that meshes with the plurality of first planetary gears 263 is provided between the lifting housing 21 and the first gear carrier 261.

[0062] The bottom of the second gear carrier 264 is provided with a plurality of second input shafts 265 arranged in a ring array. Each of the second input shafts 265 is provided with a second planetary gear 266. A second gear ring component that meshes with the plurality of second planetary gears 266 is provided between the lifting housing 21 and the second gear carrier 264.

[0063] The first transmission mechanism 25 includes a first sun gear that meshes with a plurality of corresponding second planetary gears 266;

[0064] The top of the second gear carrier 264 is provided with a second sun gear 267 that meshes with a plurality of corresponding first planetary gears 263.

[0065] Preferably, the first sun gear in the first transmission mechanism 25 starts to rotate, which is the starting source of power for the entire reduction gear set. The rotation of the first sun gear is driven by the sub-stage magnetic component 23, which introduces power into the reduction gear set 26.

[0066] The first sun gear meshes with multiple second planetary gears 266 arranged in a ring array on the second input shaft 265. When the first sun gear rotates as the driving member, it drives the second planetary gears 266 to rotate around their own second input shaft 265. At the same time, the second planetary gears 266 also mesh with the second gear ring member fixed between the lifting housing 21 and the second gear carrier 264. Under the constraint of the second gear ring member, the second planetary gears 266 will revolve around the first sun gear while rotating, thereby driving the second gear carrier 264 to rotate.

[0067] When the second gear carrier 264 rotates, the second sun gear 267 at its top rotates accordingly. The second sun gear 267 meshes with a plurality of first planetary gears 263 arranged in a ring array on the first input shaft 262. The rotation of the second sun gear 267 drives the first planetary gears 263 to rotate around their own first input shaft 262. The first planetary gears 263 mesh with the first gear ring component fixed between the lifting housing 21 and the first gear carrier 261. Under the constraint of the first gear ring component, the first planetary gears 263 revolve around the second sun gear 267 while rotating on their own axis, ultimately driving the first gear carrier 261 to rotate.

[0068] The first gear carrier 261 outputs the power after two stages of reduction and torque amplification to the subsequent transmission mechanism (such as the second transmission mechanism 27), which in turn drives the lifting rod 22 to perform lifting and lowering movements.

[0069] A larger reduction ratio can be achieved through two-stage planetary gear transmission. The two-stage transmission can further reduce the output speed and increase the output torque by reasonably designing the gear ratio of each stage. This allows the device to obtain a lower output speed and a greater output torque when the input speed is high, better meeting the force and speed requirements of the lifting rod 22 when it is lifting.

[0070] Although two-stage planetary gear transmission increases the number of transmission stages, the overall transmission efficiency remains high because each planetary gear set can achieve load balancing and efficient transmission. Multiple planetary gears participate in the transmission simultaneously, distributing the load evenly, reducing the force on individual gears, and lowering energy loss. The efficiency advantage of planetary gear transmission is obvious, and it can more effectively transfer the input energy to the output end.

[0071] Due to the compact structure of planetary gear transmission, the entire reduction gear set 26 still has advantages in space utilization. The two-stage planetary gear set can be reasonably arranged in the limited axial and radial space, and the size of the device will not increase significantly due to the increase in the number of transmission stages. This compact structural design is conducive to the miniaturization and integration of the device, and is suitable for application scenarios with strict space requirements.

[0072] Each stage of planetary gear transmission achieves load balancing, distributing the load evenly across all planetary gears. The two-stage transmission further enhances this load balancing effect, enabling the entire reduction gear set 26 to withstand greater loads. At the same time, because the stress on each gear is reduced, the risk of gear wear and damage is lowered, improving the reliability and service life of the entire reduction gear set 26. Even under long-term, high-load working conditions, the device can still operate stably.

[0073] The multi-stage meshing process of the two-stage planetary gear transmission complements and buffers each other, making the transmission process smoother, with less vibration and noise. The multi-stage transmission can better absorb and disperse the impact and vibration during the transmission process, improving the operating quality of the equipment and the user experience.

[0074] In other embodiments, there are multiple second gear carriers 264, which are stacked together, and the second sun gear 267 of the topmost second gear carrier 264 meshes with multiple corresponding first planetary gears 263.

[0075] The second sun gear 267 of the adjacent second gear carrier 264 located below one of the second gear carriers 264 meshes with a plurality of corresponding second planetary gears 266;

[0076] The second planetary gears 266 located at the bottom of the second gear carrier 264 are all meshed with the first sun gear.

[0077] The first sun gear rotates and meshes with multiple second planetary gears 266 located at the bottom of the second gear carrier 264, causing these second planetary gears 266 to rotate around their own second input shaft 265. Since the second planetary gears 266 also mesh with the second gear ring member fixed between the lifting housing 21 and the second gear carrier 264, under the constraint of the second gear ring member, the second planetary gears 266 rotate on their own axis while revolving around the first sun gear, thereby driving the bottom second gear carrier 264 to rotate.

[0078] When the bottom second gear carrier 264 rotates, the top second sun gear 267 rotates accordingly. This second sun gear 267 meshes with multiple second planetary gears 266 of the adjacent lower second gear carrier 264, driving these second planetary gears 266 to move. Similarly, under the constraint of the second gear ring member, these second planetary gears 266 rotate on their own axis and revolve around the sun, thereby driving the connected second gear carrier 264 to rotate. In this way, the power is transmitted upwards through the layers of second gear carriers 264.

[0079] The second sun gear 267 of the topmost second gear carrier 264 meshes with multiple corresponding first planetary gears 263. The rotation of the second sun gear 267 drives the first planetary gears 263 to rotate around their own first input shaft 262. The first planetary gears 263 mesh with the first gear ring component fixed between the lifting housing 21 and the first gear carrier 261. Under the constraint of the first gear ring component, the first planetary gears 263 revolve and drive the first gear carrier 261 to rotate. Finally, the first gear carrier 261 outputs power to the subsequent transmission mechanism (such as the second transmission mechanism 27) to drive the lifting rod 22 to perform lifting and lowering movements.

[0080] The number of transmission stages is further increased by the multiple stacked second gear carriers 264, which can achieve a larger reduction ratio. Each additional second gear carrier 264 and its corresponding planetary gear transmission can further reduce the speed and increase the torque on the original basis. This allows the device to obtain a lower output speed and a greater output torque under a certain input speed, so as to meet the force and speed requirements of the lifting rod 22 under different working conditions.

[0081] The design of multiple second gear carriers 264 provides more flexibility in the design of the transmission ratio. By adjusting the number of teeth of the gears in different second gear carriers 264, the reduction ratio of each stage of transmission can be precisely controlled, thereby optimizing the transmission ratio of the entire reduction gear set 26. According to the actual application requirements, the parameters of each stage of transmission can be flexibly configured to achieve the best reduction and torque increase effect.

[0082] In other embodiments, the reduction gear set 26 includes a first gear carrier 261, the bottom of which is provided with a plurality of first input shafts 262 arranged in a ring array, each of the first input shafts 262 being provided with a first planetary gear 263, the first transmission mechanism 25 including a first sun gear meshing with the plurality of corresponding first planetary gears 263, and a first gear ring member meshing with the plurality of first planetary gears 263 is provided between the lifting housing 21 and the first gear carrier 261.

[0083] Specifically, the first sun gear in the first transmission mechanism 25 starts to rotate under the drive of the sub-stage magnetic component 23. The first sun gear, as the driving component, introduces power into the reduction gear set 26.

[0084] The rotating first sun gear meshes with multiple first planetary gears 263 arranged in a ring array on the first input shaft 262. Due to the rotation of the first sun gear, the first planetary gears 263 meshing with it rotate around their own first input shaft 262. At the same time, the first planetary gears 263 also mesh with the first gear ring component fixed between the lifting housing 21 and the first gear carrier 261. Under the constraint of the first gear ring component, the first planetary gears 263 will revolve around the first sun gear while rotating on their own axis.

[0085] Specifically, the revolution of the first planetary gear 263 drives the first gear carrier 261 to rotate, and the first gear carrier 261 outputs the power after deceleration and torque amplification to the second transmission mechanism 27, which in turn drives the lifting rod 22 to perform lifting and lowering movements.

[0086] Planetary gear transmission has a large transmission ratio, which can achieve a large reduction in a small space. Multiple first planetary gears 263 participate in the transmission at the same time, which can share the load and improve the transmission efficiency. By rationally designing the tooth ratio of the first sun gear, the first planetary gear 263 and the first gear ring component, the reduction ratio can be precisely adjusted to convert the input high-speed low-torque power into low-speed high-torque power, which meets the power requirements of the lifting rod 22 when it is raised and lowered.

[0087] Preferably, the reduction gear set 26 using planetary gear transmission has a very compact structure. Multiple first planetary gears 263 are arranged in a ring array around the first sun gear. This layout makes the entire reduction gear set 26 relatively small in both radial and axial dimensions. Within the limited space of the lifting housing 21, space can be effectively utilized to achieve complex transmission functions. This is beneficial for the miniaturization design of the device and is suitable for occasions with high space requirements.

[0088] Multiple first planetary gears 263 simultaneously mesh with the first sun gear and the first gear ring component, distributing the load evenly to each gear. This load balancing method can reduce the stress on each gear, reduce the risk of gear wear and damage, and improve the service life of the gears and the reliability of the entire reduction gear set 26.

[0089] Because multiple first planetary gears 263 participate in the transmission simultaneously, their meshing process complements and buffers each other, making the transmission process smoother and reducing vibration and noise. This is very important for lifting devices that require smooth operation, and can improve the working quality and user experience of the equipment.

[0090] The structure of the reduction gear set 26 is relatively modular. Components such as the first gear carrier 261 and the first planetary gear 263 can be installed and disassembled as a whole. If a component fails, it is easy to repair or replace it separately, which reduces maintenance costs and difficulty and improves the maintainability of the equipment.

[0091] The above-mentioned single-stage, double-stage, or multi-stage reduction gear sets 26 can be selected according to actual needs, and a suitable design can be selected according to actual needs.

[0092] like Figures 1 to 12 As shown, in this embodiment, both the first gear ring component and the second gear ring component are longitudinal teeth 210 provided on the inner wall of the lifting housing 21.

[0093] In the entire transmission system, while the first planetary gear 263 rotates around the first input shaft 262, it meshes with the longitudinal teeth 210 (as the first gear ring component) on the inner wall of the lifting housing 21. The longitudinal teeth 210 are fixed to the inner wall of the lifting housing 21, providing a fixed meshing track for the first planetary gear 263. When the first sun gear drives the first planetary gear 263 to rotate through the intermediate transmission structure (such as multiple stacked second gear carriers 264), due to the meshing relationship between the first planetary gear 263 and the longitudinal teeth 210, under the constraint of the longitudinal teeth 210, the first planetary gear 263 cannot only rotate on its own axis, but also revolves around the first sun gear. The revolution of the first planetary gear 263 drives the first gear carrier 261 connected to it to rotate, thereby transmitting power to the subsequent transmission mechanism (such as the second transmission mechanism 27), and finally realizing the lifting action of the lifting rod 22.

[0094] Similarly, when the second planetary gear 266 rotates around the second input shaft 265, it will mesh with the same longitudinal teeth 210 (as the second gear ring component) on the inner wall of the lifting housing 21. The longitudinal teeth 210 provides a fixed meshing path for the second planetary gear 266, so that while the second planetary gear 266 rotates, it revolves around the corresponding second sun gear under the constraint of the longitudinal teeth 210. This revolving motion drives the second gear carrier 264 to rotate, thereby realizing the step-by-step transmission of power between multiple second gear carriers 264.

[0095] The first and second gear ring components are designed as longitudinal teeth 210 on the inner wall of the lifting housing 21, which avoids the complex structure of additional independent gear rings, reduces the number of parts, and reduces the difficulty of manufacturing and assembly. This makes the structure of the entire reduction gear set 26 simpler and more compact. This not only helps to reduce production costs but also improves production efficiency. At the same time, it reduces the assembly errors and failure points that may occur due to too many parts.

[0096] By using longitudinal teeth 210 as the gear ring component, the inner wall space of the lifting housing 21 is fully utilized, eliminating the need for an additional dedicated gear ring structure inside, thus saving space inside the device.

[0097] Preferably, the longitudinal teeth 210 are directly set on the inner wall of the lifting housing 21, forming an integral structure with the lifting housing 21. This design enhances the structural strength and stability of the gear ring component, and can better withstand the radial and axial forces generated by the planetary gear during transmission. The integrated structure of the longitudinal teeth 210 and the lifting housing 21 can reduce loosening and displacement caused by vibration and impact, and improve the reliability and service life of the entire transmission system.

[0098] By reducing the manufacturing and installation processes of individual gear rings, raw material and processing costs are lowered. At the same time, the simplified structure also reduces labor and time costs during assembly. In addition, the integrated design can reduce quality problems caused by the fit tolerance between parts, improve the product yield, and further reduce manufacturing costs.

[0099] The simple structural design makes maintenance and repair work more convenient. When maintaining the device, since there is no separate gear ring to be disassembled and installed, the staff can more quickly access the internal transmission components for inspection and repair. The integrated structure of the longitudinal tooth 210 and the lifting housing 21 also reduces the complicated replacement operation caused by damage to the gear ring, thus reducing the difficulty and cost of maintenance.

[0100] In other embodiments, the first gear ring component and the second gear ring component are both independently installed gear rings, and a suitable design can be selected according to actual needs.

[0101] like Figures 1 to 12 As shown, the second transmission mechanism 27 in this embodiment includes a drive rod component disposed on the top of the first gear frame 261. The free end of the drive rod component extends into the lifting rod 22, and the two are threadedly connected.

[0102] Since the drive rod component is located on top of the first gear carrier 261, the rotation of the first gear carrier 261 will directly drive the drive rod component to rotate synchronously.

[0103] The free end of the drive rod component extends into the lifting rod 22 and is threadedly connected to it. When the drive rod component rotates, according to the principle of thread transmission, the interaction between the threads will convert the circumferential rotation of the drive rod component into the linear motion of the lifting rod 22. Specifically, when the drive rod component rotates, its threads will generate axial thrust or tension on the lifting rod 22, causing the lifting rod 22 to move upward or downward in a linear motion along its own axis, thereby realizing the lifting function.

[0104] This design cleverly transforms rotational motion into linear motion, which effectively solves the problem of mismatched motion forms, enabling the system to achieve linear motion functions such as lifting and lowering as expected.

[0105] The threaded drive has a relatively precise transmission ratio. For every certain angle or number of rotations of the drive rod component, the lifting rod 22 will rise or fall a certain distance accordingly. By precisely controlling the rotation of the drive rod component, the lifting height of the lifting rod 22 can be controlled relatively accurately.

[0106] The drive rod component is directly set on the top of the first gear frame 261 and connected to the lifting rod 22. The overall structure is compact and occupies little space. This compact design allows the equipment to achieve lifting function in a limited space, improving space utilization. At the same time, the threaded connection has a certain degree of self-locking, which can prevent the lifting rod 22 from sliding or displacing unexpectedly due to external forces when it stops moving, ensuring the stability and safety of the system.

[0107] The threaded connection can withstand a large axial force, so that when the lifting rod 22 is carrying heavy objects, the drive rod component can effectively transmit the force to the entire transmission system through the thread, thus giving the lifting device a high load-bearing capacity. It can be used in occasions where heavy objects need to be lifted, such as lifting platforms.

[0108] Compared with some complex transmission mechanisms, threaded connections have a relatively simple structure, mature manufacturing process, and low manufacturing cost. Moreover, they are easier to maintain in daily use, without the need for frequent replacement of parts or complex debugging, thus reducing equipment maintenance costs and downtime.

[0109] Preferably, the drive rod component includes a drive rod body and a connecting part disposed on the top of the first gear frame 261. In this embodiment, the connecting part is a plug-in interface, and the bottom of the drive rod body is plugged into the plug-in interface. In other embodiments, the drive rod body and the plug-in interface are integrally formed, or the drive rod body and the connecting part are connected by snap-fit, screw connection or other methods. A suitable design can be selected according to actual needs.

[0110] like Figures 1 to 12 As shown, the top inner wall of the lifting housing 21 in this embodiment is provided with an assembly groove 211, and an annular sealing ring 212 is installed in the assembly groove 211. The inner wall of the annular sealing ring 212 abuts against the outer wall of the lifting rod 22.

[0111] Specifically, the annular sealing ring 212 is usually a sealing element with a certain elasticity, which is installed in the mounting groove 211 on the inner wall of the top of the lifting housing 21. When the lifting rod 22 moves up and down, the inner wall of the annular sealing ring 212 abuts tightly against the outer wall of the lifting rod 22. Due to the elasticity of the sealing ring itself, it will generate a certain pressure on the contact surface with the outer wall of the lifting rod, forming a sealing interface.

[0112] This sealing interface can prevent external dust, moisture, oil and other impurities from entering the interior of the lifting housing 21. At the same time, it can also prevent the lubricating oil and other media inside the lifting housing 21 from leaking into the external environment. During the up and down movement of the lifting rod 22, the annular sealing ring 212 will undergo a certain elastic deformation with the movement of the lifting rod, but it will always maintain a tight fit with the outer wall of the lifting rod and continue to play a sealing role.

[0113] Preferably, a waterproof component 213 (such as a waterproof cover or waterproof shell) is installed on the outside of the lifting housing 21 to further improve the waterproof performance of the lifting component 2.

[0114] Preferably, a limiting component is provided between the lifting housing 21 and the lifting rod 22 to restrict the circumferential rotation of the lifting rod 22.

[0115] The limiting component includes a positioning slot and a corresponding positioning block. When the lifting rod 22 is assembled into the lifting housing 21, the positioning block is engaged in the positioning slot. This is existing technology and will not be described in detail here.

[0116] like Figures 1 to 12As shown, the parent magnetic assembly 12 in this embodiment includes a parent mounting bracket 121 connected to the output end of the drive motor 11 and a parent magnet component 122 disposed on the parent mounting bracket 121. The child magnetic assembly 23 includes a child mounting bracket 231 connected to the reduction transmission assembly 24 and a child magnet component 232 disposed on the child mounting bracket 231. The child magnet component 232 corresponds to the parent magnet component 122.

[0117] After the drive motor 11 is started, its output end begins to rotate. Since the mother mounting bracket 121 is connected to the output end of the drive motor 11, the mother mounting bracket 121 will rotate with the rotation of the output end of the drive motor, thereby driving the mother magnet component 122 mounted on it to perform circular motion.

[0118] The parent magnet component 122 and the child magnet component 232 correspond to each other and interact with each other through magnetic forces. When the parent magnet component 122 rotates with the parent mounting bracket 121, the rotating magnetic field it generates will exert a force on the child magnet component 232. This magnetic force will drive the child magnet component 232 to rotate. Since the child magnet component 232 is mounted on the child mounting bracket 231, and the child mounting bracket 231 is connected to the reduction transmission assembly 24, the rotation of the child mounting bracket 231 will drive the reduction transmission assembly 24 to operate, ultimately realizing the transmission of power from the drive motor to the reduction transmission assembly.

[0119] like Figures 1 to 12 As shown, in this embodiment, there is one mother magnet component 122 and one daughter magnet component 232, and the polarities of the mother magnet component 122 and the daughter magnet component 232 are opposite.

[0120] Alternatively, there may be multiple parent magnet components 122 arranged in a ring array on the parent mounting bracket 121, and multiple child magnet components 232 arranged in a ring array on the child mounting bracket 231. The polarities of adjacent parent magnet components 122 are opposite, and the polarities of each parent magnet component 122 and its corresponding child magnet component 232 are opposite.

[0121] When there is only one parent magnet component 122 and one child magnet component 232 with opposite polarities, the drive motor 11 drives the parent mounting bracket 121 to rotate, thereby causing the parent magnet component 122 to rotate as well. Due to the principle of attraction between opposite poles, the magnetic field generated by the rotating parent magnet component 122 will exert an attractive force on the child magnet component 232, causing the child magnet component 232 to rotate. The child magnet component 232 is mounted on the child mounting bracket 231, which in turn drives the child mounting bracket 231 to rotate, and finally transmits the power to the connected reduction transmission assembly 24.

[0122] The design of a single parent magnet component 122 and a single daughter magnet component 232 makes the structure of the entire magnetic assembly very simple and reduces the number of parts.

[0123] Because there are fewer magnets, their quality and performance are easier to control during manufacturing. In terms of maintenance, replacing individual magnets is also quicker and easier if a problem occurs, reducing maintenance difficulty and cost.

[0124] In other embodiments, when there are multiple parent magnet components 122 and child magnet components 232 arranged in a ring array on the parent mounting bracket 121 and child mounting bracket 231 respectively, and the polarities of adjacent parent magnet components 122 are opposite, and the polarities of each parent magnet component 122 and its corresponding child magnet component 232 are opposite, the drive motor 11 drives the parent mounting bracket 121 to rotate, causing the ring array of parent magnet components 122 to rotate. At this time, each parent magnet component 122 will attract the corresponding child magnet component 232 through the magnetic field force of opposite poles attracting each other. As the parent magnet component 122 rotates, each child magnet component 232 is attracted and rotates in sequence, forming a continuous power transmission, driving the child mounting bracket 231 to rotate, and finally driving the reduction transmission assembly 24 to work.

[0125] Multiple magnet components are distributed in a ring array, which can provide a more uniform and continuous magnetic field force in the circumferential direction, making the power transmission smoother. Compared with single magnet transmission, the ring array of magnets can reduce the shaking and fluctuation caused by uneven magnetic field force, thus improving the stability and accuracy of transmission.

[0126] With multiple magnets participating in power transmission simultaneously, the contact area and force of the transmission are increased, thus enabling the transmission of greater torque. This allows the equipment to drive heavier loads, expands its application range, and improves its working capacity.

[0127] The multiple magnets in the ring array can respond to the rotation of the drive motor more quickly, reducing lag in the transmission process. In applications that require rapid start-stop or frequent speed changes, it can transmit power to the reduction gear components more promptly, improving the operating efficiency and response performance of the equipment.

[0128] Preferably, in other embodiments, the reduction gear assembly 24 may also adopt the following reduction structure, the working principle and advantages of which are described below:

[0129] A worm gear reducer consists of a worm and a worm wheel. The worm is typically the input shaft, and its shape resembles a screw. When the worm rotates, its helical teeth mesh with the teeth of the worm wheel, driving the worm wheel to rotate. Due to the small helix angle of the worm, the rotational speed of the worm wheel is significantly reduced under the drive of the worm, thus achieving the purpose of speed reduction. The worm wheel is connected to the output shaft, which outputs the reduced power.

[0130] The worm gear reduction structure can achieve a large reduction ratio in the first stage of transmission, which can meet the requirements of the inner plate lifting device of cooking equipment for a large reduction ratio, and transform the high-speed rotation of the drive motor into the low-speed stable rotation of the lead screw.

[0131] When the helix angle of the worm is less than the friction angle, the worm gear transmission has a self-locking function. This means that after the inner plate of the cooking device is raised or lowered to the designated position, even if the drive motor stops working, the inner plate will not descend on its own due to its own weight or external interference due to the self-locking effect, thus improving the safety and stability of the device.

[0132] During worm gear transmission, the tooth surface contact is a line contact, and the meshing process is continuous, resulting in smooth operation, low noise, and no interference with the cooking environment.

[0133] A multi-stage cylindrical gear reducer consists of multiple meshing cylindrical gears, typically divided into multiple transmission stages. Power is input from the input shaft and passes through each stage of gear pairs for reduction. Each stage consists of a driving gear and a driven gear. The driving gear drives the driven gear, and the difference in the number of teeth between the driving and driven gears achieves speed reduction. After reduction through multiple stages of gear pairs, the power is finally transmitted to the lead screw via the output shaft.

[0134] By rationally selecting the gear ratios of each stage, different reduction ratios can be easily achieved to meet the needs of the inner plate lifting device of different cooking equipment. The parameters of multi-stage cylindrical gears can be precisely designed according to the speed of the drive motor and the required speed of the lead screw to achieve the best reduction effect; a suitable design can be selected according to actual needs.

[0135] like Figures 1 to 12 As shown, a cooking device in this embodiment includes a pot body 3, an inner plate 5, and an inner plate lifting device as described in any of the above. The driving component 1 is located on the outer side of the bottom of the pot body 3, and the lifting component 2 is located on the inner side of the bottom of the pot body 3. The lifting rod 22 can drive the inner plate 5 to move up and down inside the pot body 3 while moving up and down on the lifting housing 21.

[0136] Specifically, after the drive motor 11 in the drive component 1 starts as a power source, it drives the mother mounting bracket 121 to rotate. The mother magnet component 122 on the mother mounting bracket 121 rotates accordingly. Since the mother magnet component 122 and the daughter magnet component 232 have opposite polarities, the magnetic field force generated by the rotation of the mother magnet component 122 will attract the daughter magnet component 232 to rotate, thereby driving the daughter mounting bracket 231 to rotate. The daughter mounting bracket 231 is connected to the reduction transmission assembly 24. After the rotation of the daughter mounting bracket 231 is reduced and the torque is amplified by the reduction transmission assembly 24, the power is transmitted to the lead screw 27.

[0137] The lead screw 27 and the lifting rod 22 are connected by a thread. When the lead screw 27 rotates under the drive of the reduction transmission assembly 24, the lifting rod 22 will move linearly along the axial direction of the lead screw 27 due to the thread structure of the lead screw 27. The lifting rod 22 is installed in the lifting housing 21 and moves up and down in the lifting housing 21. The inner plate 5 abuts against the lifting rod 22, so the up and down movement of the lifting rod 22 will drive the inner plate 5 to move up and down in the pot body 4.

[0138] Preferably, the cooking device further includes a base 4, and the drive component 1 is located inside the base 4.

[0139] The drive component 1 and the lifting component 2 are independent of each other. The drive component 1 is located on the outside of the pot body 3 and is connected to the lifting component 2 by magnetic force to achieve power transmission without mechanical connection. This split design avoids the mechanical coupling problem between the motor and the push rod in the traditional push rod lifting device, which is convenient for separate operation and independent maintenance.

[0140] Furthermore, by transmitting power through the magnetic attraction between the parent and child magnetic components, the wear, noise, and maintenance problems that may occur in traditional gear and pulley drives are avoided, while enhancing the reliability and durability of the device.

[0141] Specifically, the drive component 1 and electrical components are located entirely on the outside of the pot body, while the lifting component 2 is located on the inside of the pot body. This avoids the risk of the motor directly contacting the internal environment of the cooking device and eliminates safety hazards such as water leakage and electric leakage. It is particularly suitable for application scenarios that require direct contact with liquids, such as lifting hot pots, sugar-reducing rice cookers, and pressure cookers.

[0142] Specifically, the lifting component 2 can be assembled into the pot body through the magnetic attraction between the mother magnetic component 12 and the daughter magnetic component 23, without the need for complicated mechanical fixing tools. Users can quickly disassemble and assemble it, which is convenient for cleaning, maintenance or replacement. In other embodiments, the lifting component 2 can also be assembled into the pot body by snap-fit, screw connection or other means, and the appropriate design can be selected according to actual needs.

[0143] The separate design of the drive component 1 and the lifting component 2 has a high degree of modularity, which facilitates the development of lifting devices with different specifications and functions to meet diverse application needs.

[0144] This inner plate lifting device is suitable for various cooking scenarios that require lifting functions, such as adjusting the height of ingredients in a lifting hot pot, adjusting the rice and water levels in a sugar-reducing rice cooker, and adjusting the height of the steaming tray in a steamer or pressure cooker.

[0145] The inner plate can be raised and lowered smoothly using the inner plate lifting device to meet the cooking status adjustment needs of different ingredients.

[0146] Combined with the pot design, it can realize multiple cooking functions such as steaming, boiling and braising. The inner plate can also be equipped with different accessories (such as steamer, tray, etc.) to further expand the applicable scenarios of the device.

[0147] The cooking device can be a lifting hot pot, a sugar-reducing rice cooker, a steamer, or a pressure cooker, etc., and a suitable design can be selected according to actual needs.

[0148] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. An inner plate lifting device, characterized in that: It includes an independent drive component (1) and a lifting component (2). The lifting component (2) includes a lifting housing (21). The lifting housing (21) is movably connected to a lifting rod (22). The lifting housing (21) is provided with a sub-magnetic component (23) and a speed reduction transmission component (24). The sub-magnetic component (23) is located at the bottom of the lifting housing (21). The speed reduction transmission component (24) is located between the sub-magnetic component (23) and the lifting rod (22), and is connected to both of them in a transmission manner. The driving component (1) includes a driving motor (11) and a parent magnetic component (12) disposed on the output end of the driving motor (11). The parent magnetic component (12) and the child magnetic component (23) are correspondingly arranged. The driving motor (11) can drive the parent magnetic component (12) to rotate, so that the parent magnetic component (12) drives the child magnetic component (23) to rotate, thereby driving the speed reduction transmission component (24) to drive the lifting rod (22) to lift and lower on the lifting housing (21).

2. The inner plate lifting device according to claim 1, characterized in that: The speed reduction transmission assembly (24) includes a first transmission mechanism (25), a speed reduction gear set (26), and a second transmission mechanism (27) arranged sequentially from bottom to top. The first transmission mechanism (25) is connected to the speed reduction gear set (26) and the sub-stage magnetic assembly (23) respectively, and the second transmission mechanism (27) is connected to the speed reduction gear set (26) and the lifting rod (22) respectively.

3. The inner plate lifting device according to claim 2, characterized in that: The reduction gear set (26) includes a first gear carrier (261), and the bottom of the first gear carrier (261) is provided with a plurality of first input shafts (262) arranged in a ring array. Each of the first input shafts (262) is provided with a first planetary gear (263). The first transmission mechanism (25) includes a first sun gear that meshes with the plurality of corresponding first planetary gears (263). A first gear ring component that meshes with the plurality of first planetary gears (263) is provided between the lifting housing (21) and the first gear carrier (261).

4. The inner plate lifting device according to claim 2, characterized in that: The reduction gear set (26) includes a first gear carrier (261) and a second gear carrier (264) arranged sequentially from top to bottom. The bottom of the first gear carrier (261) is provided with a plurality of first input shafts (262) arranged in a ring array. Each of the first input shafts (262) is provided with a first planetary gear (263). A first gear ring component that meshes with the plurality of first planetary gears (263) is provided between the lifting housing (21) and the first gear carrier (261). The bottom of the second gear carrier (264) is provided with a plurality of second input shafts (265) arranged in a ring array. Each of the second input shafts (265) is provided with a second planetary gear (266). A second gear ring component that meshes with the plurality of second planetary gears (266) is provided between the lifting housing (21) and the second gear carrier (264). The first transmission mechanism (25) includes a first sun gear that meshes with a plurality of corresponding second planetary gears (266); The top of the second gear carrier (264) is provided with a second sun gear (267) that meshes with a plurality of corresponding first planetary gears (263).

5. The inner plate lifting device according to claim 4, characterized in that: The number of the second gear carrier (264) is multiple, and the multiple second gear carriers (264) are stacked. The second sun gear (267) of the second gear carrier (264) at the top meshes with multiple corresponding first planetary gears (263). The second sun gear (267) of the adjacent second gear carrier (264) located below one of its second gear carriers (264) meshes with a plurality of corresponding second planetary gears (266); The second planetary gears (266) of the second gear carrier (264) located at the bottom mesh with the first sun gear.

6. The inner plate lifting device according to claim 4, characterized in that: The first gear ring component and the second gear ring component are both longitudinal teeth (210) provided on the inner wall of the lifting housing (21).

7. An inner plate lifting device according to any one of claims 3 to 5, characterized in that: The second transmission mechanism (27) includes a drive rod member disposed on the top of the first gear frame (261), the free end of the drive rod member extending into the lifting rod (22), and the two being threadedly connected.

8. The inner plate lifting device according to claim 1, characterized in that: The top inner wall of the lifting housing (21) is provided with an assembly groove (211), and an annular sealing ring (212) is installed in the assembly groove (211). The inner wall of the annular sealing ring (212) abuts against the outer wall of the lifting rod (22).

9. The inner plate lifting device according to claim 1, characterized in that: The parent magnetic assembly (12) includes a parent mounting bracket (121) connected to the output end of the drive motor (11) and a parent magnet component (122) disposed on the parent mounting bracket (121). The child magnetic assembly (23) includes a child mounting bracket (231) connected to the speed reduction transmission assembly (24) and a child magnet component (232) disposed on the child mounting bracket (231). The child magnet component (232) corresponds to the parent magnet component (122).

10. A cooking device, characterized in that: Includes a pot body (3), an inner plate (5), and an inner plate lifting device as described in any one of claims 1 to 9. The driving component (1) is located on the outer side of the bottom of the pot body (3), the lifting component (2) is located on the inner side of the bottom of the pot body (3), and the lifting rod (22) can drive the inner plate (5) to rise and fall inside the pot body (3) while rising and falling on the lifting housing (21).

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