A paste machine facilitating opening and closing of a cover

Abstract

The utility model relates to paste machine technical field, especially disclose a paste machine convenient to lid open and shut use, including base, set up on the base pot body, with pot body detachable cooperation use's inner bag, with pot body detachable cooperation's pot cover, the pot cover is used for covering the opening of inner bag and will inner bag limit on the pot body, and the pot body is used for heating the food material in the inner bag, the inner bag is equipped with rotating stirring assembly, and the base is equipped with the drive assembly for driving stirring assembly rotation, the pot body is equipped with the first clamping portion with the guide portion, and the pot cover is equipped with the second clamping portion with the screw portion, and the guide portion and the screw portion guide cooperation realizes the alignment of pot body and pot cover, and drives the relative rotation of pot cover and pot body and makes first clamping portion and second clamping portion clamping. With the pot body guide portion and the pot cover screw portion accurate alignment, the first, second clamping portion is firmly clamped by rotating the pot cover, and the lid opening and closing operation is greatly simplified and the inner bag can be reliably limited, and the food material in the inner bag is heated and stirred smoothly.

Description

Technical Field

[0001] This utility model relates to the field of paste making technology, and in particular discloses a paste making machine with an easy-to-open and close lid. Background Technology

[0002] Currently available paste makers suffer from numerous inconveniences. Traditional lids often use threaded or single-clamp connections, requiring precise alignment for easy and laborious operation. The inner pot is prone to shifting or shaking during stirring or heating. Stirring components often lack effective positioning structures, leading to vertical movement and eccentric vibration at high speeds, resulting in noise and uneven mixing. The lid and inner pot have poor sealing, causing steam leakage during heating, reducing thermal efficiency and posing a risk of burns. The inner pot's installation is unstable, easily rotating synchronously with the components during stirring; the connection between the drive and stirring components transmits power unstably, easily slipping and difficult to disassemble. Furthermore, the equipment is prone to shifting due to vibration when placed on the ground, and the lid handles often lack anti-scalding designs, posing safety hazards when handling. These issues all negatively impact the user experience and the equipment's practicality. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a paste machine that is easy to open and close.

[0004] To achieve the above objectives, this utility model provides a paste maker that facilitates the opening and closing of the lid, comprising a base, a pot body disposed on the base, an inner liner detachably fitted with the pot body, and a lid detachably fitted with the pot body. The lid covers the opening of the inner liner and limits the inner liner to the pot body, while the pot body heats the food inside the inner liner. A rotating stirring assembly is provided inside the inner liner, and a driving assembly is provided on the base to drive the stirring assembly to rotate. The pot body has a guide portion and a first locking portion, and the lid has a screw-on portion and a second locking portion. The guide portion and the screw-on portion guide and cooperate to align the pot body and the lid, and driving the lid to rotate relative to the pot body causes the first locking portion and the second locking portion to engage.

[0005] This structure, through the guiding cooperation of the guide section and the screw-on section, enables quick and precise alignment of the lid and the pot body, avoiding the problems of difficult alignment and easy misalignment of traditional lids, thus significantly improving the efficiency of lid installation. At the same time, the rotating snap-on method is simple to operate; users do not need to press or clip forcefully, but can simply rotate to secure the lid, making the user experience easier. Furthermore, the snap-on structure ensures a tight connection between the lid and the pot body, preventing the lid from loosening during heating and stirring, which could lead to food spillage or heat loss. This ensures both safety and improves food processing results, making it suitable for users of all ages, especially convenient for the elderly and children.

[0006] Furthermore, the pot body has a stepped frustum, and there are multiple guide parts and multiple screw-fit parts. The multiple guide parts are arranged circumferentially along the stepped frustum, and the guide parts correspond one-to-one with the screw-fit parts. A groove structure is formed between the guide parts and the stepped frustum. The first snap-fit ​​part is located in the groove structure, and the second snap-fit ​​part is located on the screw-fit part. The screw-fit part can be screwed into the groove structure by cooperating with the guide parts. The second snap-fit ​​part on the screw-fit part snaps with the first snap-fit ​​part in the groove structure.

[0007] The circumferential arrangement of multiple guide sections and screw-in sections ensures more even force distribution on the lid, avoiding localized wear or unstable connections caused by single-point jamming, thus extending product lifespan. The groove structure formed by the stepped frustum and guide sections provides a stable screw-in trajectory and ample space for the screw-in section, ensuring a smooth and jam-free screwing process. Placing the first locking section within the groove structure protects the locking structure from external impacts and prevents food residue from entering the locking gaps, improving ease of cleaning. The one-to-one correspondence further enhances alignment accuracy, allowing users to quickly install the lid even in low-light conditions, enhancing its practicality.

[0008] Furthermore, the base is provided with a drive assembly and a stirring assembly rotatably disposed inside the inner pot. The pot lid is provided with a positioning groove to accommodate the end of the stirring assembly near the pot lid, so as to prevent shaking or displacement when the drive assembly drives the stirring assembly to stir.

[0009] The positioning groove on the lid effectively limits the movement of the stirring component, solving the problem of wobbling and deviation when the stirring component rotates at high speed. This ensures that the stirring component maintains a stable rotation trajectory, improving the uniformity of food mixing and preventing areas where food is not fully mixed. Simultaneously, stable mixing reduces friction and collision between the stirring component and the inner wall of the pot, lowering noise and creating a quieter operating environment. Furthermore, the limiting structure protects the connection between the stirring component and the drive component, preventing wear or malfunction of transmission parts due to wobbling, improving the overall stability and reliability of the machine, reducing maintenance costs, and giving users greater peace of mind.

[0010] Furthermore, the lid is fitted with a sealing ring, and when the lid and the pot body are detachably connected, the lid seals against the inner pot through the sealing ring.

[0011] The sealing ring ensures a tight seal between the lid and the inner pot, effectively preventing steam leakage during heating, improving thermal efficiency, shortening the cooking time for porridge, and preventing scalding of users, thus enhancing safety. The sealed connection also prevents soup or food from spilling out, keeping the equipment and countertop clean and reducing cleaning workload. The detachable connection facilitates lid removal and cleaning, and the securely installed sealing ring is unlikely to fall off or be lost, fitting tightly to the inner pot opening for a long-lasting and stable seal. Furthermore, the sealing ring also acts as a buffer, reducing collision and wear between the lid and the inner pot when closing, extending their lifespan, and balancing sealing performance with structural protection.

[0012] Furthermore, the inner liner is provided with a lug, the pot body is provided with a groove that matches the lug, and the lug is provided with an L-shaped rib group extending into the inner liner.

[0013] The fitting fit between the lugs and the grooves allows for quick and easy positioning of the inner pot within the pot body, preventing it from rotating inside. This is especially important when the stirring assembly is operating, as it prevents the inner pot from rotating synchronously with the assembly, ensuring optimal stirring performance. The L-shaped ribs extend from the lugs to the inner pot, not only enhancing the structural strength of the lugs and preventing breakage or deformation under stress, but also acting as reinforcing ribs on the inner pot wall, improving overall rigidity and reducing deformation caused by heating or impact. The L-shaped design of the ribs maximizes structural strength without affecting the internal volume of the inner pot, while also facilitating manufacturing and reducing production costs. This structure makes it easier to remove and place the inner pot; users can easily lift it using the lugs, improving ease of use and ensuring accurate positioning for greater peace of mind.

[0014] Furthermore, the output shaft of the drive assembly is provided with a locking cam, and the stirring assembly is provided with a locking groove. The locking cam and the locking groove are locked together to circumferentially lock the stirring assembly onto the locking cam. The locking cam and the locking groove can be assembled and disassembled along the axial direction of the output shaft.

[0015] The circumferential locking fit between the locking cam and the locking groove ensures stable power transmission from the drive assembly to the mixing assembly, preventing slippage and guaranteeing that the mixing assembly's rotational speed matches that of the drive assembly, thus improving mixing efficiency. The axially detachable design makes disassembly and installation of the mixing assembly simple and convenient; users can simply insert and remove it axially, facilitating subsequent cleaning or replacement. Compared to traditional bolt or key connections, this locking method is simpler in structure, requires less effort, and eliminates the need for tools, enhancing usability. Simultaneously, the tight locking fit reduces radial wobble during rotation, lowering noise and component wear, and extending the service life of both the drive and mixing assemblies.

[0016] Furthermore, the locking convex shaft has multiple circumferentially distributed ribs, and the length extension direction of the ribs intersects with the length extension direction of the locking convex shaft at an angle of 15°-60°.

[0017] Multiple circumferentially distributed ribs increase the contact area between the locking cam and the locking groove, resulting in a tighter locking fit, smoother power transmission, and prevention of localized wear caused by single-point stress. The ribs intersect the locking cam at an angle of 15°-60° along its length, forming a certain inclination angle. This provides guidance during axial assembly, making it easier for the stirring assembly to fit onto the locking cam and reducing assembly difficulty. Simultaneously, the inclined ribs generate axial preload when the stirring assembly rotates, further preventing axial movement and improving structural stability. The optimized 15°-60° intersection angle ensures both guiding effect and preload force without increasing assembly resistance due to excessive angle, balancing ease of assembly and operational stability, and enhancing the overall structural rationality.

[0018] Furthermore, the rib has a spiral protrusion, which extends circumferentially around the central axis of the locking convex shaft along the length of the rib. The spiral protrusions of multiple ribs have the same spiral direction, and the ribs and spiral protrusions form a hook-shaped structure that extends radially outward from the locking convex shaft.

[0019] The spiral design with convex protrusions is adapted to the rotation direction of the stirring assembly. During operation, these protrusions engage more tightly with the inner wall of the locking groove, further enhancing the circumferential locking effect and preventing slippage during power transmission. The hook-like structure limits the stirring assembly in the axial direction, preventing accidental dislodgement during high-speed rotation and improving safety. Multiple convex ribs rotate in the same direction, ensuring even force distribution on the stirring assembly and preventing damage caused by excessive localized stress. This structural design significantly improves the fit and stability between the locking convex shaft and the locking groove without increasing assembly difficulty, ensuring a reliable connection even under prolonged, high-load operation, extending equipment lifespan, and enhancing user confidence.

[0020] Furthermore, the base is equipped with a support suction cup assembly, which has multiple support suction cups circumferentially distributed at the bottom of the base.

[0021] Multiple circumferentially distributed support suction cups increase the contact area between the base and the placement surface, improving the overall stability of the equipment and preventing displacement or tipping due to vibrations from the rotating mixing components during operation. The support suction cups adhere tightly to the placement surface through atmospheric pressure, providing reliable fixation, especially on smooth surfaces such as glass and tile, where the anti-slip effect is particularly significant. The circumferential distribution design ensures even force distribution on the base, preventing adhesion failure caused by excessive force on a single suction cup. The support suction cup assembly does not affect the overall aesthetics of the base, and the suction cups have a certain degree of elasticity, acting as a buffer and shock absorber to reduce damage to the work surface from equipment vibrations and lower noise levels, creating a quieter operating environment. The suction cups are easy to disassemble and clean, and maintain good adhesion performance even after long-term use.

[0022] Furthermore, the pot lid is provided with a strip-shaped handle, the inside of which is hollow, and the outside of which is provided with an anti-scalding layer.

[0023] The strip-shaped handle provides a convenient grip, facilitating easy opening and closing of the lid. Its ergonomic design ensures a more comfortable and even grip, preventing hand slippage. The hollow structure, while maintaining handle strength, effectively reduces the overall weight of the lid, making operation easier, saving material costs, and reducing production energy consumption. The heat-resistant layer on the outside of the handle effectively blocks heat transfer, preventing burns when handling a freshly used lid and enhancing safety. This heat-resistant layer can be made of materials such as silicone or heat-insulating cotton, offering a soft feel and further improving grip comfort. This handle design balances practicality, comfort, and safety, making opening and closing the lid easier and more convenient, especially suitable for scenarios where the lid is frequently used in high-temperature environments, optimizing the overall user experience.

[0024] The beneficial effects of this utility model are as follows: The guide part and the screw-on part cooperate to achieve quick and accurate positioning of the pot lid; the rotating snap-on operation is simple; the connection is tight and prevents spillage and scalding; multiple sets of circumferential arrangement ensure even force distribution on the pot lid and smooth screw-on; the groove structure protects the snap-on parts and is easy to clean. The positioning groove limits the stirring component, ensuring uniform stirring, reducing noise and protecting the components; the sealing ring improves thermal efficiency, prevents spillage and scalding, and is easy to clean. The lug and lug position the inner liner to prevent rotation; the L-shaped rib group enhances structural strength; the drive component locks the convex shaft and groove, ensuring stable power transmission and convenient disassembly and assembly; the inclined convex rib and spiral spiral protrusion enhance the locking effect. The support suction cup group improves the stability of the equipment placement and reduces vibration and noise; the strip handle is ergonomic, hollow to reduce weight, and has a scalding layer for safety. Overall, it takes into account the convenience of operation, the safety of use, and the structural stability, extending the service life of the equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a paste maker that facilitates the opening and closing of the lid according to the present invention;

[0026] Figure 2 This is an exploded view of the present invention;

[0027] Figure 3 This is a schematic diagram of the locking convex shaft and locking groove of this utility model;

[0028] Figure 4 This is a partial structural diagram of the pot body of this utility model;

[0029] Figure 5 This is a partial structural diagram of the pot lid of this utility model.

[0030] The reference numerals in the attached drawings include: 1. Base; 2. Pot body; 3. Pot lid; 4. Inner pot; 5. Guide part; 6. First snap-fit ​​part; 7. Screw-fit part; 8. Second snap-fit ​​part; 9. Vent; 11. Stepped frustum; 12. Stirring assembly; 13. Drive assembly; 14. Positioning groove; 15. Sealing ring; 16. Lug; 17. Ear groove; 18. Rib assembly; 19. Locking convex shaft; 21. Locking groove; 22. Protruding rib; 23. Rotational protrusion; 24. Support suction cup assembly; 25. Handle; 26. Anti-scalding layer. Detailed Implementation

[0031] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0032] Please see Figures 1 to 3 As shown, this utility model discloses a paste maker that is easy to open and close, including a base 1, a pot body 2 disposed on the base 1, an inner liner 4 detachably used with the pot body 2, and a pot lid 3 detachably used with the pot body 2. The pot lid 3 is used to cover the opening of the inner liner 4 and limit the inner liner 4 to the pot body 2. The pot body 2 is used to heat the food inside the inner liner 4. The inner liner 4 is provided with a rotating stirring component 12, and the base 1 is provided with a driving component 13 for driving the stirring component 12 to rotate. The pot body 2 is provided with a guide part 5 and a first locking part 6, and the pot lid 3 is provided with a screw-on part 7 and a second locking part 8. The guide part 5 and the screw-on part 7 guide and cooperate to realize the alignment of the pot body 2 and the pot lid 3. Driving the pot lid 3 to rotate relative to the pot body 2 causes the first locking part 6 and the second locking part 8 to engage.

[0033] When assembling the lid 3 and the pot body 2, first place the inner pot 4 inside the pot body 2, ensuring accurate installation of the inner pot 4 and the pot body 2. Then, lift the lid 3 and align the screw-on part 7 on the lid 3 with the guide part 5 on the pot body 2. The guide part 5 serves to guide and position, quickly achieving initial alignment between the lid 3 and the pot body 2 and avoiding difficulties in closing due to alignment deviations. After the screw-on part 7 and the guide part 5 have completed their guiding engagement, manually drive the lid 3 to rotate circumferentially relative to the pot body 2. During the rotation, the second locking part 8 on the lid 3 gradually moves closer to the first locking part 6 on the pot body 2 until the two are fully engaged.

[0034] At this point, the lid 3 not only covers the opening of the pot body 2, but also securely holds the inner pot 4 to the pot body 2 through a snap-fit ​​structure, preventing the inner pot 4 from shifting during subsequent heating and stirring. Simultaneously, the drive assembly 13 on the base 1 maintains a transmission connection with the stirring assembly 12 inside the inner pot 4, preparing for subsequent stirring of ingredients. The entire lid-closing process is simple to operate, precise in positioning, and securely snapped, effectively improving the ease of use of the paste maker.

[0035] Furthermore, the pot body 2 has a stepped frustum 11, and there are multiple guide parts 5 and multiple screw-fit parts 7. The multiple guide parts 5 are arranged circumferentially along the stepped frustum 11, and the guide parts 5 correspond one-to-one with the screw-fit parts 7. A groove structure is formed between the guide parts 5 and the stepped frustum 11. The first snap-fit ​​part 6 is provided in the groove structure, and the second snap-fit ​​part 8 is provided on the screw-fit part 7. The screw-fit part 7 can be screwed into the groove structure by guiding and cooperating with the guide parts 5. The second snap-fit ​​part 8 on the screw-fit part 7 snaps into the first snap-fit ​​part 6 in the groove structure.

[0036] The stepped frustum 11 on the pot body 2 provides the mounting base for the guide section 5 and the groove structure. Multiple guide sections 5 are evenly arranged circumferentially along the stepped frustum 11. The corresponding pot lid 3 also has the same number of screw-on sections 7. This multi-set mating structure can further improve the accuracy of the alignment between the pot lid 3 and the pot body 2 and the stability after the lid is closed. When closing the pot lid 3, each screw-on section 7 is aligned with the corresponding guide section 5. Due to the guiding effect of the guide section 5, the screw-on section 7 can be smoothly screwed into the groove structure.

[0037] As the lid 3 rotates, the screw-in part 7 gradually enters the groove structure formed by the guide part 5 and the stepped frustum 11. The groove structure accommodates and limits the screw-in part 7, preventing radial displacement during rotation. When the screw-in part 7 is fully screwed into the groove structure, the second locking part 8 on the screw-in part 7 and the first locking part 6 in the groove structure interlock perfectly, forming a reliable locking connection. The cooperation of multiple sets of guide parts 5 and screw-in parts 7, along with the locking structure, makes the connection between the lid 3 and the pot body 2 more secure. Even during high-speed rotation of the stirring assembly 12 or heating of the pot body 2, the lid 3 can be prevented from loosening or falling off. At the same time, the symmetrical distribution of multiple structures ensures that the lid 3 is subjected to uniform force, extending the service life of the components.

[0038] Furthermore, the base 1 is provided with a drive assembly 13 and a stirring assembly 12 rotatably disposed in the inner pot 4. The pot lid 3 is provided with a positioning groove 14 to accommodate the end of the stirring assembly 12 near the pot lid 3, so as to prevent shaking or displacement when the drive assembly 13 drives the stirring assembly 12 to stir.

[0039] During the operation of the paste maker, after the drive component 13 on the base 1 is activated, it drives the stirring component 12 inside the inner pot 4 to rotate through the transmission structure, thereby achieving the mixing of ingredients. Since the stirring component 12 needs to rotate continuously at high speed, if its end lacks effective positioning, it is prone to shaking or shifting under centrifugal force, affecting the mixing effect, and may even collide with the inner pot 4 or the lid 3, causing damage. The positioning groove 14 provided on the lid 3 can precisely position and support the end of the stirring component 12 near the lid 3.

[0040] Once the lid 3 is closed, the end of the stirring component 12 near the lid 3 fits perfectly into the positioning groove 14. The inner wall of the positioning groove 14 fits tightly with the end of the stirring component 12, forming a radial constraint. Thus, when the driving component 13 drives the stirring component 12 to rotate, both ends of the stirring component 12 are driven and positioned by the transmission structure of the base 1 and limited and supported by the positioning groove 14 of the lid 3, forming a stable double-end positioning structure. This effectively limits the radial runout of the stirring component 12, ensuring that the stirring component 12 can always maintain stable operation on the preset rotation trajectory. This not only improves the uniformity of food mixing but also reduces frictional wear between components, enhancing the working stability and reliability of the paste maker.

[0041] Specifically, the pot lid 3 is fitted with a sealing ring 15. When the pot lid 3 is detachably connected to the pot body 2, the pot lid 3 is sealed and abutted against the inner pot 4 through the sealing ring 15.

[0042] In practice, the sealing ring 15 is made of food-grade silicone, which has good elasticity and sealing properties. It is embedded in the inner edge of the lid 3 to form a sealing structure. After the lid 3 is snapped into place with the pot body 2, the lid 3 presses the sealing ring 15 tightly against the upper edge of the inner pot 4 through its own pressure. The sealing ring 15 undergoes elastic deformation after being compressed, filling the gap between the lid 3 and the inner pot 4, thereby achieving a sealing effect. This sealing structure effectively prevents soup and steam from overflowing from the gaps during heating and stirring, avoiding soiling the base 1 and the countertop. It also reduces heat loss, improves heating efficiency, and allows food to cook faster.

[0043] Furthermore, the food-grade silicone material is safe and non-toxic, meeting the hygiene requirements for food contact materials and ensuring user safety. When the lid 3 needs cleaning, the sealing ring 15 can be removed from the recessed groove of the lid 3 for thorough cleaning, preventing food residue residue from breeding bacteria.

[0044] Specifically, the inner liner 4 is provided with a lug 16, the pot body 2 is provided with a groove 17 adapted to the lug 16, and the lug 16 is provided with an L-shaped rib group 18 extending to the inner liner 4.

[0045] In practical use, when placing the inner pot 4 into the pot body 2, the lug 16 of the inner pot 4 should be aligned with the ear groove 17 of the pot body 2. The lug 16 slides into the ear groove 17 to achieve circumferential positioning of the inner pot 4 in the pot body 2, preventing the inner pot 4 from rotating with the stirring component 12 when it is working. The L-shaped rib group 18 provided on the lug 16 is connected to the lug 16 at one end and extends downward along the side wall of the inner pot 4 at the other end. The rib group 18 is made of metal material (such as stainless steel) integrally formed with the inner pot 4, and has strong structural strength.

[0046] The L-shaped structure reinforces the lug 16 from two directions, preventing it from deforming or breaking due to long-term stress (such as the pressure from the lid 3, the weight of the inner pot 4, and the weight of the food). Simultaneously, the rib assembly 18 enhances the overall strength of the inner pot 4's sidewalls, preventing bulging and deformation during heating or stirring, thus extending its service life. The ear groove 17 and the lug 16 have a high fitting precision, ensuring both quick installation of the inner pot 4 and accurate positioning, providing a stable foundation for the subsequent closing of the lid 3 and the operation of the stirring assembly 12.

[0047] Specifically, the output shaft of the drive assembly 13 is provided with a locking cam 19, and the stirring assembly 12 is provided with a locking groove 21. The locking cam 19 and the locking groove 21 are locked together to circumferentially lock the stirring assembly 12 onto the locking cam 19. The locking cam 19 and the locking groove 21 can be assembled and disassembled along the output shaft axis.

[0048] In actual assembly and operation, the locking cam 19 of the output shaft of the drive assembly 13 is designed as a non-circular structure, and the corresponding locking groove 21 at the bottom of the stirring assembly 12 is adapted to the shape of the locking cam 19. When installing the stirring assembly 12, align the locking groove 21 of the stirring assembly 12 with the locking cam 19, and press it downward along the output shaft axis to achieve assembly.

[0049] Because the locking cam 19 and the locking groove 21 are non-circular (such as D-shaped, square, or spline-shaped), the circumferential rotation of the stirring assembly 12 relative to the output shaft is effectively restricted. This allows the power of the drive assembly 13 to be efficiently transmitted to the stirring assembly 12 through the engagement of the locking cam 19 and the locking groove 21, causing the stirring assembly 12 to rotate synchronously. When the stirring assembly 12 needs to be disassembled for cleaning, simply pull the stirring assembly 12 upwards to axially disengage the locking cam 19 from the locking groove 21, making the operation convenient. This axial assembly and circumferential locking structure ensures the reliability of power transmission and facilitates the disassembly and cleaning of the stirring assembly 12, meeting the easy-to-clean requirements of the paste maker.

[0050] Specifically, the locking convex shaft 19 has a plurality of circumferentially distributed convex ribs 22, and the length extension direction of the convex ribs 22 is intersected with the length extension direction of the locking convex shaft 19, with an intersection angle of 15°-60°.

[0051] In practical implementation, multiple ribs 22 on the locking cam 19 are evenly distributed circumferentially (e.g., 4 or 6). The intersection angle between the ribs 22 and the length direction of the locking cam 19 is preferably 30°. These inclined ribs 22 form a wedge fit with the corresponding structure in the locking groove 21 of the stirring assembly 12. When the drive assembly 13 drives the locking cam 19 to rotate, the inclined ribs 22 will generate an axial pressure on the locking groove 21, so that the stirring assembly 12 always maintains a downward trend during operation, avoiding the upward movement of the stirring assembly 12 due to vibration caused by high-speed rotation, and ensuring a more stable connection between the stirring assembly 12 and the output shaft.

[0052] The 15°-60° cross angle has been verified through multiple tests, ensuring sufficient axial pressure to prevent movement without causing assembly and disassembly difficulties due to excessive angle. The inclination direction of the rib 22 matches the rotation direction of the drive assembly 13, aligning the direction of the axial pressure generated during rotation with the assembly direction, further enhancing connection stability. Simultaneously, the rib 22 increases the contact area between the locking cam 19 and the locking groove 21, improving power transmission efficiency and reducing localized wear.

[0053] Specifically, the rib 22 has a spiral protrusion 23, which extends spirally circumferentially around the central axis of the locking convex shaft 19 along the length direction of the rib 22. The spiral directions of the spiral protrusions 23 of the multiple ribs 22 are consistent, and the ribs 22 and the spiral protrusions 23 form a hook-shaped structure that extends radially outward from the locking convex shaft 19.

[0054] In a specific working scenario, the hook-shaped structure formed by the spiral protrusion 23 and the rib 22 will engage with the corresponding slot in the locking groove 21 after the stirring assembly 12 is assembled. When the drive assembly 13 drives the locking cam 19 to rotate, since the spiral direction of the spiral protrusion 23 is consistent with the rotation direction, a force will be generated to pull the stirring assembly 12 towards the output shaft, making the fit between the stirring assembly 12 and the locking cam 19 tighter with almost no axial clearance.

[0055] This hook-like structure not only achieves circumferential locking but also serves as an axial limit, completely preventing axial movement or detachment of the stirring assembly 12 during high-speed rotation, greatly improving safety. The consistent rotation direction of the multiple ribs 22 and the spiral protrusions 23 ensures uniform force distribution on each hook-like structure, preventing damage caused by excessive force on a single hook-like structure. Furthermore, the spiral design of the spiral protrusions 23 allows for easy disassembly of the stirring assembly 12; simply rotate the assembly 12 in the opposite direction to disengage the hook-like structure from the slot, then pull upwards for removal. This convenient operation balances connection stability and ease of disassembly.

[0056] Specifically, the base 1 is provided with a support suction cup assembly 24, which has multiple support suction cups circumferentially distributed at the bottom of the base 1.

[0057] In actual use, the support suction cup assembly 24 usually consists of 3-4 support suction cup assemblies 24, evenly distributed around the bottom of the base 1. The support suction cups are made of rubber and have good adsorption performance. When the paste maker is placed on a countertop (such as a kitchen countertop), pressing down on the base 1 squeezes out the air in the support suction cups, creating a negative pressure state. Under the action of atmospheric pressure, the support suction cups adhere tightly to the countertop.

[0058] Multiple circumferentially distributed support suction cups provide stable support for the base 1, preventing the paste maker from tipping over or shifting during operation (especially when the stirring component 12 rotates at high speed). The suction force of the support suction cups effectively counteracts the vibration and impact generated by stirring, reducing the amplitude of equipment shaking and lowering operating noise. Furthermore, the rubber support suction cups also act as a buffer, preventing direct contact between the base 1 and the work surface from causing friction and scratches. When it is necessary to move the paste maker, simply lift one side of the base 1 upwards to allow air to enter the support suction cups, eliminating the negative pressure and allowing for easy movement of the device, making it flexible and convenient to use.

[0059] Specifically, the pot lid 3 is provided with a strip handle 25, the handle 25 has a hollow structure inside, and the handle 25 has an anti-scalding layer 26 on the outside.

[0060] In operation, the strip-shaped handle 25 is positioned at the top center of the lid 3, allowing users to easily open and close the lid 3 with one hand. The handle 25 has a hollow internal structure, which reduces the overall weight of the lid 3, making opening and closing easier; additionally, the hollow structure provides insulation, reducing heat transfer from the lid 3 to the handle 25. The outer anti-scalding layer 26 of the handle 25 is typically made of silicone or high-temperature resistant plastic, offering excellent heat insulation. Even after prolonged heating in the paste maker, when the lid 3's temperature rises, the anti-scalding layer 26 effectively blocks heat, preventing burns to the user while holding the handle 25 and ensuring safe use.

[0061] The strip-shaped handle 25 has a larger contact area with the palm, making it more comfortable to hold and less prone to slipping. At the same time, the optimized installation position of the handle 25 ensures that the lid 3 is evenly stressed when lifted, preventing tilting and spillage of the contents. The hollow structure also facilitates the molding and processing of the handle 25, reducing production costs. The anti-scalding layer 26 is fixed to the handle 25 using integrated injection molding or a sleeve method, ensuring a secure connection that is not easily detached and maintains good anti-scalding performance even after long-term use.

[0062] The working principle of this utility model is as follows: Before the paste maker is put into use, the core components must be assembled and the lid 3 must be closed to provide a stable foundation for subsequent heating and stirring. First, the inner pot 4 and the pot body 2 are assembled. When the inner pot 4 is placed inside the pot body 2, the lugs 16 on the outer wall of the inner pot 4 must be precisely aligned with the ear grooves 17 of the pot body 2. After the lugs 16 slide into the ear grooves 17, the inner pot 4 can be circumferentially positioned in the pot body 2, preventing the inner pot 4 from rotating synchronously with the stirring assembly 12 during subsequent stirring. At the same time, the L-shaped ribs 18 on the lugs 16 can reinforce the structure of the lugs 16 from both directions and enhance the strength of the side wall of the inner pot 4, preventing the inner pot 4 from deforming due to heating or stress.

[0063] After the inner pot 4 is assembled, the lid 3 is put on and closed with the pot body 2. The first step is the alignment guide. Pick up the lid 3 and make the screw-on part 7 at the bottom of the lid 3 correspond one-to-one with the guide parts 5 arranged circumferentially on the stepped frustum 11 of the pot body 2. The guide parts 5 quickly realize the initial alignment of the lid 3 and the pot body 2 through structural guidance to avoid the deviation of the lid. The second step is screwing and locking. Manually drive the lid 3 to rotate circumferentially relative to the pot body 2. At this time, the screw-on part 7 of the lid 3 will gradually screw into the "groove structure formed by the guide part 5 and the stepped frustum 11" along the guide part 5. The groove structure plays a radial limiting role for the screw-on part 7. As it rotates, the second locking part 8 on the screw-on part 7 will gradually approach and finally lock into place with the first locking part 6 in the groove structure. Once the lid is in place, the lid 3 not only covers the opening of the pot body 2, but also securely holds the inner pot 4 in the pot body 2 through the snap-fit ​​structure. At the same time, the food-grade silicone sealing ring 15 embedded on the edge of the lid 3 will be squeezed and deformed to tightly fill the gap between the lid 3 and the inner pot 4, achieving a sealing effect and preventing the soup from overflowing and heat from being lost when heating and stirring.

[0064] After the lid 3 is closed, the paste maker enters the core working stage of heating and stirring. During this stage, the stability and safety of operation are ensured through the cooperation of multiple structures. First is the power transmission and positioning of the stirring component 12: the output shaft of the drive component 13 of the base 1 is equipped with a non-circular locking convex shaft 19. The locking groove 21 at the bottom of the stirring component 12 is adapted to the shape of the locking convex shaft 19. After the two are assembled along the axial direction, the circumferential locking of the stirring component 12 can be achieved. After the drive component 13 is started, the power can be efficiently transmitted to the stirring component 12 through the locking convex shaft 19 and the locking groove 21, driving it to rotate synchronously. At the same time, the positioning groove 14 on the top of the lid 3 will accommodate the end of the stirring component 12 near the lid 3, forming a "double-end positioning structure" with the drive positioning of the stirring component 12 by the base 1, which effectively limits the radial runout of the stirring component 12 when it rotates at high speed and avoids it from colliding with the inner pot 4 and the lid 3.

[0065] To further enhance operational stability, the locking cam 19 and support structure are reinforced: the circumferentially distributed ribs 22 of the locking cam 19 intersect the longitudinal direction of the cam 19 at 15°-60°, and the ribs 22 are provided with spiral-shaped protrusions 23, forming a hook-like structure; during stirring, the inclined ribs 22 exert axial pressure on the locking groove 21, while the spiral protrusions 23 engage with the slots inside the locking groove 21, generating a tension force, thus preventing the stirring assembly 12 from axially shifting; the circumferentially distributed support suction cups at the bottom of the base 1 create negative pressure by pressing to expel internal air, tightly adhering to the table surface to counteract the vibration and impact generated by stirring, preventing the equipment from shifting or tipping over. In addition, the strip-shaped hollow handle 25 on the top of the lid 3 not only reduces the weight of the lid 3 and enhances heat insulation, but the external anti-scalding layer 26 also prevents users from being burned during operation, ensuring stirring efficiency, operational stability, and safety throughout the process.

[0066] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A paste maker with an easy-to-open and close lid, characterized in that: The device includes a base (1), a pot body (2) mounted on the base (1), an inner liner (4) detachably fitted to the pot body (2), and a lid (3) detachably fitted to the pot body (2). The lid (3) is used to cover the opening of the inner liner (4) and limit the inner liner (4) to the pot body (2). The pot body (2) is used to heat the food inside the inner liner (4). The inner liner (4) is equipped with a rotating stirring assembly (12), and the base (1) is equipped with a driving assembly (13) for driving the stirring assembly (12) to rotate. The pot body (2) is equipped with a guide part (5) and a first locking part (6), and the lid (3) is equipped with a screw-on part (7) and a second locking part (8). The guide part (5) and the screw-on part (7) guide and fit together to achieve the alignment of the pot body (2) and the lid (3). The lid (3) is driven to rotate relative to the pot body (2) so that the first locking part (6) and the second locking part (8) lock together.

2. The paste maker according to claim 1, which facilitates the opening and closing of the lid, is characterized in that: The pot body (2) has a stepped frustum (11), and there are multiple guide parts (5) and multiple screw-in parts (7). Multiple guide parts (5) are arranged around the circumference of the stepped frustum (11), and the guide parts (5) correspond one-to-one with the screw-in parts (7). A groove structure is formed between the guide parts (5) and the stepped frustum (11). The first snap-fit ​​part (6) is located in the groove structure, and the second snap-fit ​​part (8) is located on the screw-in part (7). The screw-in part (7) can be screwed into the groove structure through the guide part (5). The second snap-fit ​​part (8) on the screw-in part (7) snaps into the first snap-fit ​​part (6) in the groove structure.

3. The paste maker according to claim 1, which facilitates the opening and closing of the lid, is characterized in that: The base (1) is provided with a drive assembly (13) and a stirring assembly (12) rotatably disposed in the inner pot. The pot lid (3) is provided with a positioning groove (14) to accommodate the end of the stirring assembly (12) near the pot lid (3) to avoid shaking or displacement when the drive assembly (13) drives the stirring assembly (12) to stir.

4. The paste maker according to claim 1, which facilitates the opening and closing of the lid, is characterized in that: The lid (3) is fitted with a sealing ring (15). When the lid (3) and the pot body (2) are detachably connected, the lid (3) is sealed and abuts against the inner pot (4) through the sealing ring (15).

5. A paste maker with an easy-to-open and close lid as described in claim 1, characterized in that: The inner liner (4) is provided with a lug (16), and the pot body (2) is provided with a groove (17) that matches the lug (16). The lug (16) is provided with an L-shaped rib group (18) extending to the inner liner (4).

6. A paste maker with an easy-to-open and close lid as described in claim 1, characterized in that: The output shaft of the drive assembly (13) is provided with a locking cam (19), and the stirring assembly (12) is provided with a locking groove (21). The locking cam (19) and the locking groove (21) are locked together to lock the stirring assembly (12) circumferentially onto the locking cam (19). The locking cam (19) and the locking groove (21) can be assembled and disassembled along the output shaft axis.

7. A paste maker with an easy-to-open and close lid as described in claim 6, characterized in that: The locking convex shaft (19) has a plurality of circumferentially distributed convex ribs (22), and the length extension direction of the convex ribs (22) is intersected with the length extension direction of the locking convex shaft (19) at an angle of 15°-60°.

8. A paste maker with an easy-to-open and close lid as described in claim 7, characterized in that: The rib (22) has a spiral protrusion (23), which spirals circumferentially around the central axis of the locking convex shaft (19) along the length of the rib (22). The spiral directions of the spiral protrusions (23) of the multiple ribs (22) are consistent. The ribs (22) and the spiral protrusions (23) form a hook-shaped structure that extends radially outward from the locking convex shaft (19).

9. A paste maker with an easy-to-open and close lid as described in claim 1, characterized in that: The base (1) is provided with a support suction cup assembly (24), which has multiple support suction cups circumferentially distributed at the bottom of the base (1).

10. A paste maker with an easy-to-open and close lid as described in claim 1, characterized in that: The lid (3) is provided with a strip handle (25), the handle (25) has a hollow structure inside, and the handle (25) has an anti-scalding layer (26) on the outside.

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