Food processor reliable in transmission

Abstract

The utility model relates to a reliable-transmission food processing machine which comprises a machine base provided with a motor and a driving magnetic disk assembly. The cup body assembly is installed on the machine base, and the cup body assembly comprises a cup body, a smashing device and an outer magnetic part located outside the cup body; the crushing device comprises a shell, a crushing part, a cutter shaft, a driven magnetic disk assembly magnetically driven by a driving magnetic disk assembly, and an inner magnetic part magnetically attracted with an outer magnetic part; wherein the shell is provided with an inner cavity for accommodating the driven magnetic disc assembly and the inner magnetic piece, the inner side of the bottom wall of the shell is provided with step parts which are axially staggered, and the driven magnetic disc assembly and the inner magnetic piece are respectively arranged at different axial sections of the step parts, so that magnetic poles of the driven magnetic disc assembly and the inner magnetic piece are axially staggered. The driven magnetic disk assembly and the inner magnetic piece are axially staggered, magnetic inner circulation between the driven magnetic disk assembly and the inner magnetic piece is avoided, more outward transmission of the driven magnetic disk assembly and the inner magnetic piece is achieved, and the magnetic attraction locking force of the inner magnetic piece and the transmission torque of the driven magnetic disk assembly are improved.

Description

Technical Field

[0001] The utility model relates to the field of food processing, in particular to a food processing machine which has a machine base and a cup body and adopts magnetic non-contact transmission processing. Background Art

[0002] Existing food processing machines, such as blenders or food processors, typically include a base and a detachable cup assembly mounted on the base. The base is equipped with a motor, and the cup assembly includes a cup for holding processed food materials and a crushing element for crushing the food materials. The rotation of the motor drives the crushing element to rotate, thereby cutting and crushing the food materials in the cup. This type of food processing machine typically relies on the high-speed rotation of the crushing element to crush the food materials. Therefore, during operation, the motor and crushing element of the blender need to be in a high-speed rotating state. On the one hand, the motor itself and the lower coupling driven by the motor will generate vibration and noise when transmitting to the upper coupling. On the other hand, the impact generated by the high-speed collision between the crushing element and the food materials will also be transmitted back through the upper coupling to the lower coupling and react to the motor, causing the blender to vibrate and make more noise during operation, resulting in a poor user experience. Therefore, how to reduce the reaction force of the crushing element on the motor, or even cut off the mechanical transmission between the two, becomes the primary problem in solving vibration and noise.

[0003] Based on the technical problems existing in the above technical solutions, the applicant has proposed a non-contact transmission solution, such as Chinese utility model patent CN201020015043.4, which discloses a non-contact soymilk maker. A magnetic non-contact upper and lower couplings are provided between the motor and the crushing cutter. These couplings include upper and lower transmission methods and internal and external transmission methods. Because the couplings do not directly contact each other, noise and vibration are significantly reduced during operation. Furthermore, an improved non-contact transmission solution has been proposed, such as Chinese invention patent CN201120194553.7, which discloses an indirect transmission food processing machine. The couplings include an active coupling provided on the motor power output shaft and a driven coupling connected to the crushing cutter. The driven coupling has a certain floating space in the axial direction, allowing the crushing cutter to slide appropriately in the axial direction to disengage stuck material and enable the crushing cutter to operate normally.

[0004] Although the detachable crushing tool and driven coupling assembly are convenient for users to operate and clean the cup body assembly, when the user operates the cup body or container, for example, when pouring out the slurry in the cup body or container, the crushing tool and driven coupling will fall off from the inside of the cup body or container. In particular, due to the obstruction of the opaque slurry, the user has no way of predicting that the crushing tool and driven coupling will fall from the cup body or container, which poses a potential risk of the crushing tool cutting the user.

[0005] Based on the above problems, the existing technology further provides a detachable non-contact transmission solution. A magnet assembly is provided between the detachable crushing tool, the driven coupling, and the cup body, which are mutually attracted to each other. During normal use, the magnet assembly can fix the crushing tool to the bottom of the cup body, preventing it from falling off. On the other hand, when the user needs to remove the crushing tool, they only need to overcome the magnetic attraction of the magnet assembly to remove the crushing tool from the cup body. As a result, the existing technology has been able to provide a relatively complete non-contact magnetic transmission solution.

[0006] However, after further research, the applicant discovered that, in the assembly of the pulverizing tool and the driven coupling, the driven coupling is typically equipped with a permanent magnet to magnetically attract the active coupling of the base, achieving effective power transmission. To ensure magnetic locking of the pulverizing tool, an additional magnetic component is required to magnetically attract the cup assembly. Typically, the magnetic component is radially positioned outside the permanent magnet, or axially positioned above or below the permanent magnet. However, such an arrangement results in magnetic interference between the permanent magnet and the magnetic component, resulting in more magnetic lines of force forming a closed loop between the permanent magnet and the magnetic component. This compromises the power transmission of the permanent magnet, reducing the power transmission efficiency of the driven coupling. Furthermore, the magnetic attraction of the magnetic component to the cup is reduced, potentially preventing the pulverizing tool from reliably magnetically locking to the cup. Increasing the magnetic properties of the permanent magnet and the magnetic component would increase cost, volume, and weight. Furthermore, the increased magnetic forces would create more closed loops, resulting in a less significant improvement in magnetic properties. Summary of the Invention

[0007] The purpose of the utility model is to provide a food processing machine with reliable transmission, so as to solve the technical problem in the prior art that magnetic interference occurs between the internal magnetic part and the driven magnetic disk assembly used for magnetic locking of the pulverizing device, thereby affecting the power transmission efficiency of the driven magnetic disk assembly and rendering the magnetic locking of the pulverizing device ineffective.

[0008] In order to solve the above technical problems, the present application provides a food processing machine with reliable transmission, wherein the food processing machine includes: a machine base, provided with a motor and an active magnetic disk assembly driven by the motor; a cup body assembly, detachably mounted on the machine base, the cup body assembly including a cup body, a crushing device disposed in the cup body and detachably mounted on the inner side of the cup body, and an external magnetic member disposed outside the cup body; the crushing device including a shell, a crushing member, a cutter shaft, a driven magnetic disk assembly that is attracted to the active magnetic disk assembly and drives the crushing member to work under the drive of the active magnetic disk assembly, and an internal magnetic member that is magnetically mutually aligned with the external magnetic member; wherein a closed inner cavity is formed inside the shell to accommodate the driven magnetic disk assembly and the internal magnetic member, the cutter shaft passes through the shell to connect the driven magnetic disk assembly and the crushing member, and an axially offset step portion is provided on the inner side of the bottom wall of the shell, the driven magnetic disk assembly and the internal magnetic member are respectively disposed in different axial sections of the step portion, so that the magnetic poles of the driven magnetic disk assembly and the internal magnetic member are axially offset.

[0009] Preferably, the step portion includes a first mounting platform formed by inward contraction of the center of the bottom wall and a second mounting platform formed at the periphery of the bottom wall. The driven magnetic disk assembly is located above the first mounting platform, and the inner magnetic part surrounds the periphery of the driven magnetic disk assembly and is mounted on the second mounting platform.

[0010] Preferably, the outer side of the bottom wall is recessed inwardly corresponding to the second mounting platform to form an accommodating cavity, and the active disk assembly extends into the accommodating cavity to be axially magnetically attracted to the driven disk assembly.

[0011] Preferably, the step portion includes a first mounting platform that is axially offset and a second mounting platform surrounding the outer periphery of the first mounting platform, a supporting portion located between the first mounting platform and the second mounting platform and protruding outward from the bottom wall, the driven magnetic disk assembly is located above the first mounting platform, and the inner magnetic part surrounds the outer periphery of the driven magnetic disk assembly and is mounted on the second mounting platform.

[0012] Preferably, a countersunk hole is provided at the center of the bottom of the driven magnetic disk assembly, and the second mounting platform is located in the center area of ​​the countersunk hole and contracts inwardly to form a third mounting platform.

[0013] Preferably, the driven magnetic disk assembly includes a bearing mounted on the countersunk hole, and the bearing includes a first rotating portion connected to the countersunk hole and a second rotating portion abutting against the third mounting platform.

[0014] Preferably, the pulverizing device further comprises a magnetic isolation member made of a magnetic conductive material, wherein the magnetic isolation member is located in the inner cavity and between the driven magnetic disk assembly and the inner magnetic member.

[0015] Preferably, the magnetic isolation component is fixedly connected to the inner wall of the shell and forms an installation space for fixing the inner magnetic component.

[0016] Preferably, the driven magnetic disk assembly includes a driven magnet, the internal magnetic part includes an inner magnet, the poles of the driven magnet and the inner magnet are both arranged axially, and the cross-section of the magnetic isolation part is "L"-shaped and is respectively in contact with the inner side wall and top wall of the inner magnet.

[0017] Compared with the existing technology, this application has at least the following technical effects:

[0018] 1. This application continues the applicant's technical direction in non-contact transmission, and adopts an active magnetic disk assembly and a driven magnetic disk assembly that are magnetically attracted to each other to realize power transmission between the motor and the crushing part, fundamentally avoiding the crushing part from transmitting vibration and noise to the motor during operation. The crushing device is detachably arranged at the bottom of the cup, an external magnetic part is arranged outside the cup body, and an internal magnetic part is arranged inside the crushing device. The external magnetic part and the internal magnetic part are magnetically attracted to each other to lock the crushing device, thereby preventing the crushing device from falling off during normal use of the food processor. On this basis, the present application first sets up a shell, and uses the shell to form an inner cavity for enclosing the driven magnetic disk assembly and the inner magnetic part, so as to prevent the driven magnetic disk assembly and the inner magnetic part from being affected by the outside, thereby improving the stability and reliability of the operation of the driven magnetic disk assembly and the inner magnetic part.

[0019] An axially offset step portion is provided on the inner side of the bottom wall of the shell, and the driven disk assembly and the inner magnetic part are respectively provided in different axial sections of the step portion, so that the magnetic poles of the driven disk assembly and the inner magnetic part are axially offset from each other, thereby reducing the internal circulation of magnetic force directly generated between the magnetic poles of the driven disk assembly and the inner magnetic part, thereby improving the magnetic transmission efficiency between the driven disk assembly and the inner magnetic part and the outside, that is, ensuring efficient power transmission between the driven disk assembly and the active disk assembly, and also ensuring reliable magnetic locking of the external magnetic part and the internal magnetic part, thereby improving the stability and reliability of the crushing device, and the reliability of the power transmission of the crushing device.

[0020] 2. Generally speaking, the driven disk assembly needs to achieve power transmission with the active disk assembly, and a stronger magnetic attraction is required between the two. Therefore, the driven disk assembly usually has a stronger magnetism. At the same time, in order to ensure a stronger magnetic attraction between the driven disk assembly and the active disk assembly, the driven disk assembly is usually set close to the bottom wall of the shell. However, in order to avoid friction between the driven disk assembly and the bottom wall when rotating, a gap is set between the driven disk assembly and the bottom wall. However, since the driven disk assembly has a strong magnetic attraction, if the gap between the bottom wall and the outside is too small, for example, when the pulverizing device is placed directly on a workbench that can be magnetically attracted, such as a basin that can be magnetically attracted, the driven disk assembly closer to the bottom wall may be directly magnetically attracted to the basin, making it difficult for the driven disk assembly to be separated from the workbench, affecting the user's direct operation. The center of the bottom wall is contracted inward to form a first mounting platform, and a second mounting platform is formed on the bottom wall surrounding the outer periphery of the first mounting platform. The first and second mounting platforms are used to form a step portion, and the driven disk assembly is placed above the first mounting platform, close to the first mounting platform and with a rotational gap. The inner magnetic member is mounted on the second mounting platform and surrounds the outer periphery of the driven disk assembly. With this arrangement, the magnetic poles of the inner magnetic member and the driven disk assembly are axially misaligned to ensure stable and reliable operation of the driven disk assembly and the inner magnetic member. Furthermore, the first mounting platform is used to increase the distance between the driven disk assembly and the bottom wall, thereby weakening the magnetic attraction between the driven disk assembly and an external support platform such as a magnetic basin, which will not affect the user's normal operation.

[0021] Generally speaking, the crushing device is placed directly on the inner side of the bottom of the cup body, the driven disk assembly is close to the bottom of the cup, and the active disk assembly is close to the outer side of the bottom of the cup, so that the active disk assembly and the driven disk assembly can better achieve magnetic attraction to fully ensure magnetic transmission. Furthermore, the inner magnetic part is arranged on the outer periphery of the driven disk assembly, and the outer magnetic part is arranged at a relative position at the lower end of the bottom of the inner magnetic part, so as to lock the crushing device in the axial direction, which is the same as the direction of the force acting on the crushing device, and can better lock the crushing device. The inner magnetic part surrounds the outer periphery of the driven disk assembly, and multiple inner magnets can be arranged to magnetically attract the outer magnetic part, so as to fix the crushing device more evenly in the circumferential direction, so as to avoid instability when the crushing device is subjected to force on one side. The inner magnetic part and the outer magnetic part usually only need to lock the crushing device to the bottom of the cup body, and do not require excessive magnetic attraction force for power transmission. Therefore, although the inner magnetic part is directly arranged on the second mounting platform and is directly close to the bottom of the crushing device, the magnetic attraction force between the inner magnetic part and the supporting table is not enough to affect the user's operation.

[0022] 3. The housing is typically configured in a plate shape, whereby the outer side of the bottom wall of the housing is recessed inwardly corresponding to the first mounting platform to form a receiving cavity. When the cup assembly is mounted on the machine base, the active magnetic disk assembly can extend into the receiving cavity, bringing it closer to the driven magnetic disk assembly, reducing the distance between the active and driven magnetic disk assemblies and enhancing the magnetic attraction between them, thereby ensuring stable and reliable power transmission of the food processor. Furthermore, the active magnetic disk assembly extending into the receiving cavity is also offset relative to the inner and outer magnetic components in terms of magnetic poles, preventing the active magnetic disk assembly from interfering with the magnetic locking between the inner and outer magnetic components, thereby ensuring a safer and more reliable food processor.

[0023] 4. A first mounting platform and a second mounting platform are provided to ensure that the magnetic poles of the driven disk assembly and the inner magnetic member are axially offset from each other, thereby ensuring power transmission of the driven disk assembly and reliable locking of the inner magnetic member. To prevent magnetic attraction between the driven disk assembly and the load-bearing surface, as previously described, the center of the bottom wall is preferably recessed inward to form the first mounting platform, while the inner magnetic member is positioned on the second mounting platform. Although the inner magnetic member itself does not require excessive magnetic attraction, and even the inner magnetic member itself may not have a permanent magnet, simply attracting the permanent magnet of the outer magnetic member, generally, the inner magnetic member with a permanent magnet can better achieve magnetic locking. While the magnetic attraction between the inner magnetic member and the load-bearing surface has little impact on user operation, it can affect the user experience for some users. Furthermore, depending on the food processor, the active disk assembly may not be able to extend further upward into the housing cavity. Therefore, the driven disk assembly may need to be axially lower than the inner magnetic member to be closer to the active disk assembly. Therefore, the step portion includes a first mounting platform and a second mounting platform that are axially offset, wherein the first mounting platform located in the center can be axially higher than the second mounting platform, or lower than the second mounting platform. Accordingly, the driven disk assembly corresponding to the first mounting platform can be axially higher than the inner magnetic member mounted on the second mounting platform, or lower than the inner magnetic member, to meet the installation requirements of the driven disk assembly and the active disk assembly. On this basis, a support portion protruding toward the outside of the housing is provided between the first and second mounting platforms. On the one hand, the support portion, in contact with the external bearing surface, can simultaneously prevent magnetic attraction between the driven disk assembly, the inner magnetic member, and the bearing surface, thereby reducing the magnetic attraction between the pulverizing assembly and the bearing surface, making it easier for users to operate and use the pulverizing device. On the other hand, the support portion can better magnetically isolate the driven disk assembly from the inner magnetic member to prevent mutual interference between the driven disk assembly and the inner magnetic member. Furthermore, the support portion can also increase the strength between the first and second mounting platforms, ensuring that the first and second mounting platforms better perform their installation support functions.

[0024] 5. For the driven disk assembly, in order to ensure that the driven disk assembly has sufficient magnetism, a plurality of permanent magnets assembled in a ring are usually provided. In order to reduce the weight of the driven disk assembly itself, preferably, a countersunk hole is provided at the bottom center of the driven disk assembly, and the permanent magnets of the driven disk assembly are arranged on the periphery of the countersunk hole. This ensures that the driven disk assembly has sufficient magnetic attraction, and also makes the force on the driven disk assembly more balanced, ensuring the smooth operation. Correspondingly, the step portion is provided with a third mounting platform at the bottom center of the shell, that is, the rotation center of the first mounting platform. The third mounting platform retracts inward to cooperate with the countersunk hole. For example, the third mounting platform can extend into the countersunk hole. The third mounting platform can limit the driven disk assembly to ensure that the transmission of the driven disk assembly is more stable and reliable, and to avoid the driven disk assembly from swaying during operation.

[0025] 6. When the driven disk assembly is magnetically transmitted with the active disk assembly, there is a great magnetic attraction between the active disk assembly and the driven disk assembly, and such magnetic attraction will be transmitted between the crushing assembly, and finally decomposed into the shell and the bearings that carry the driven disk assembly and the crushing parts. Although bearings with sufficient load-bearing capacity can be selected to meet the work requirements, the continuous load-bearing capacity and the disappearance of the load-bearing capacity after the separation between the active disk assembly and the driven disk assembly will cause the bearings to be continuously impacted by axial force, affecting the life of the bearings; and the main function of the bearings here is for the relative rotation between the knife shaft and the shell. If they are subjected to forces in multiple directions at the same time, it will also affect the reliable operation of the bearings; and improving the properties of the bearings will inevitably lead to an increase in product costs. A bearing is added to the countersunk hole of the driven disk assembly, and the bearing is in contact with the third mounting platform. In this way, the first rotating part of the bearing is directly installed at the countersunk hole to be connected to the driven disk assembly, and the second rotating part of the bearing is in contact with the third mounting platform. The magnetic force exerted on the driven disk assembly directly acts on the bearing and is transmitted to the housing through the bearing. The bearing only needs to withstand the magnetic force exerted on the driven disk assembly and does not need to participate too much in the transmission scheme. Therefore, the stability and reliability of the transmission bearing set on the knife shaft for transmission can be prevented, thereby ensuring the stable and reliable operation of the crushing device.

[0026] 7. Although misalignment can reduce the internal magnetic circulation between the driven disk assembly and the inner magnetic part, providing the driven disk assembly and the inner magnetic part with external magnetic release, a certain amount of internal magnetic circulation still exists between the two. A magnetic isolation member is further provided within the housing of the pulverizing device, and the isolation member is provided between the driven disk assembly and the inner magnetic part to better magnetically isolate the driven disk assembly and the inner magnetic part, further reducing the internal magnetic circulation between the driven disk assembly and the inner magnetic part, thereby enhancing the transmission magnetic attraction of the driven disk assembly and the magnetic locking force of the inner magnetic part.

[0027] 8. The magnetic isolation component is directly fixedly connected to the casing, and the magnetic isolation component is used to form an installation space for fixing the internal magnetic component, which ensures the isolation of the driven disk assembly and the internal magnetic component, and reduces the installation structure for separately installing the internal magnetic component, and the structure is simple and reliable.

[0028] 9. Preferably, the active disk assembly and the driven disk assembly attract each other axially to achieve power transmission; and the inner magnetic part and the outer magnetic part also attract each other axially to achieve magnetic locking. Therefore, the poles of the driven magnet and the inner magnet are both arranged axially to ensure that the driven disk assembly and the inner magnetic part can reliably achieve power transmission and locking. The cross-section of the magnetic isolation part is "L"-shaped, including an inner side wall clamped between the driven disk assembly and the inner magnetic part, and a top wall located at the top of the inner magnetic part, so that the magnetic isolation part can better wrap and magnetically isolate the inner magnetic part, not only reducing the magnetic internal circulation between the driven disk assembly and the inner magnetic part, but also guiding the magnetic lines of force of the inner magnet to the outer magnetic part through the top wall, so as to enhance the magnetic attraction between the inner magnetic part and the outer magnetic part. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a food processing machine with reliable transmission according to the present invention.

[0030] Figure 2 This is a cross-sectional view of the entire food processing machine with reliable transmission according to the first embodiment of the present invention.

[0031] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A.

[0032] Figure 4 This is a structural diagram of a crushing device of a second embodiment of a food processing machine with reliable transmission described in the utility model.

[0033] Figure 5 for Figure 4 A partial enlarged schematic diagram of B in the figure.

[0034] Figure 6 This is a structural schematic diagram of the cup body assembly of the third embodiment of a food processing machine with reliable transmission described in the present utility model.

[0035] Figure 7 for Figure 6 A partial enlarged schematic diagram of C in the middle.

[0036] Figure 8 This is a structural diagram of a crushing device of a fourth embodiment of a food processing machine with reliable transmission described in the utility model.

[0037] The corresponding names of the numbers in the figure are as follows:

[0038] 100. Base; 101. Motor; 102. Active disk assembly; 110. Cup assembly; 120. Cup; 121. Main body; 122. Cutterhead; 123. Cutterhead sink; 124. Cup support; 125. Transmission chamber; 2. Crushing device; 21. Crushing element; 211. Fixed head; 22. Driven disk assembly; 221. Driven disk body; 2211. Driven magnet; 2212. Transmission magnetic shield ; 2213. Countersunk hole; 222. Blade shaft; 223. Transmission bearing; 224. Shaft seal; 23. Internal magnetic part; 231. Magnetic isolation part; 2311. Magnetic isolation side wall; 2312. Magnetic isolation top wall; 24. Upper shell; 25. Inner receiving cavity; 26. Bearing; 3. External magnetic part; 5. Bottom shell; 51. First mounting platform; 52. Second mounting platform; 53. Third mounting platform; 54. Inner receiving cavity; 55. Support part. DETAILED DESCRIPTION

[0039] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0041] In addition, in the description of this application, it should be understood that the terms "center," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "axial," "radial," "circumferential," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Terms such as "upstream" and "downstream" are based on positional relationships during normal fluid flow.

[0042] Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0043] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0045] Food processors such as wall breakers, food processors, and soymilk makers usually rely on motors to drive the rotation of the crushing parts, which will collide and cut the ingredients placed in the cup body to complete the crushing of the ingredients. During the crushing process of current wall breakers, the rotation of the motor usually exceeds 10,000 rpm. During the collision and cutting process of the crushing parts with the ingredients, non-continuous and random impacts are formed between the ingredients and the crushing parts, and the crushing parts will generate vibration and noise. Such vibration will be transmitted back to the motor and the base, which will cause the motor and the base to generate more serious vibration and noise during operation. As a technological leader in food processing products in this field, the applicant is constantly exploring to find solutions to the problems of motor vibration and noise.

[0046] As previously mentioned, the applicants earlier proposed using a non-contact method to transmit power between the motor and the pulverizer, thereby severing the mechanical connection between the motor and the pulverizer and preventing the vibration and impact of the pulverizer from reacting to the motor. Due to the adoption of non-contact power transmission, the cup body does not need to be provided with a through hole for power transmission, facilitating the integrated design of the cup body. Furthermore, the pulverizer within the cup body is directly configured as a detachable structure. When the user requires pulverization, the pulverizer is installed, and when the user does not need pulverization, the pulverizer is not required. This facilitates the functional expansion of the food processor and avoids the need to clean the pulverizer after use.

[0047] However, the pulverizing device cannot be placed completely freely in the cup assembly. On the one hand, the pulverizing device needs to be magnetically driven by the active magnetic disk assembly, which requires that the pulverizing device and the active magnetic disk assembly be aligned. On the other hand, if the pulverizing device is not limited, there is a risk that the pulverizing device will be pushed open and run around in the cup assembly when it is misaligned with the active ribs. Furthermore, when the user operates the cup assembly, there is also a risk that the pulverizing device will fall directly from the cup assembly and injure the user. The applicant arranges an external magnetic part on the outside of the cup body and an internal magnetic part in the pulverizing device. When the pulverizing device is installed in the cup assembly, the external magnetic part and the internal magnetic part are magnetically attracted to each other to lock the pulverizing device in the cup assembly, thereby achieving the purpose of safety locking.

[0048] However, after in-depth research, the applicant further discovered that for the components of the crushing tool and the driven coupling, a permanent magnet is provided inside the driven disk assembly to magnetically attract the active disk assembly of the machine base to achieve power transmission, and in order to achieve high torque transmission, the driven disk assembly is provided with a permanent magnet with a strong magnetic field. In order to ensure the magnetic locking of the crushing tool, the inner magnetic part and the outer magnetic part are usually also provided with permanent magnets respectively to better achieve the magnetic locking of the crushing device. In such a scheme, when the crushing device is installed in the cup body assembly, an outer magnetic part, an inner magnetic part, and a driven disk assembly will be provided within the position range of the crushing device, all of which are provided with permanent magnets. Among them, what is needed is the magnetic attraction between the outer magnetic part and the inner magnetic part, and the magnetic attraction between the driven disk assembly and the active disk assembly. However, since the inner magnetic part and the driven disk assembly are both disposed inside the pulverizing device, magnetic interference occurs between the inner magnetic part and the driven disk assembly, meaning that more magnetic lines of force directly form a closed loop between the driven disk assembly and the inner magnetic part. This affects the power transmission of the driven disk assembly, reducing the power transmission efficiency of the driven coupling. Furthermore, the magnetic attraction between the inner magnetic part and the outer magnetic part is reduced, and the pulverizing tool may not be reliably magnetically locked with the cup body. Increasing the magnetism of the driven disk assembly and the inner magnetic part would, on the one hand, increase the cost and the volume and weight of the accessories. On the other hand, the increased magnetism would also form more closed loops, making the magnetic enhancement less noticeable.

[0049] How to achieve the goal of no magnetic interference between two groups of magnetic components that are close to each other, so as to ensure that the two groups of magnetic components can respectively realize the corresponding functions, has become the main breakthrough point in solving the problem of safe and reliable magnetic transmission solutions. Through continuous research and testing, the applicant has found that for the technical solution in which the driven disk assembly and the inner magnetic part are arranged radially, that is, the magnetic transmission solution in which the inner magnetic part is radially sleeved on the outer periphery of the driven disk assembly, the axial lower side of the active disk assembly and the outer magnetic part are magnetically attracted to the driven disk assembly and the inner magnetic part respectively, and the magnetic poles of the driven disk assembly and the inner magnetic part are arranged axially. In the existing solution, a closed magnetic cycle is directly formed between the driven disk assembly and the inner magnetic part that are arranged axially and radially displaced, which affects both the driven disk assembly and the inner magnetic part.

[0050] Based on the above analysis, the applicant, on the basis of a non-contact transmission solution, changes the mounting structure of the pulverizing device, thereby changing the magnetic pole arrangement of the driven disk assembly and the inner magnetic member, weakening the magnetic internal circulation between the driven disk assembly and the inner magnetic member, thereby increasing the transmission torque of the driven disk assembly and the magnetic locking force of the inner magnetic member without increasing the magnetism of the driven disk assembly and the inner magnetic member. In order to solve the above technical problems and achieve sufficient transmission power, high transmission efficiency, and stable and reliable installation of the pulverizing device, the present application provides a food processing machine with reliable transmission, the food processing machine comprising a machine base and a cup assembly detachably placed on the machine base, wherein non-contact magnetic power transmission is adopted between the two. The machine base is provided with a motor and an active disk assembly driven by the motor. The cup assembly is provided with a cup body for holding the processed material. Since there is no need for a power transmission through hole, the cup body can be provided with a completely closed bottom. The pulverizing device for cutting the food is detachably mounted on the bottom of the inner side of the cup body. On the one hand, the food to be processed is usually located at the bottom of the cup body, and on the other hand, the pulverizing device located at the bottom can be more closely attached to the active disk assembly. A crushing device is provided inside the cup body assembly, and an external magnetic part is provided outside the cup body. The driven magnetic disk assembly and the active magnetic disk assembly are magnetically coupled to realize the power drive of the crushing part. The crushing device is provided with a shell, and the shell forms a closed inner cavity to arrange the driven magnetic disk assembly and the inner magnetic part in the inner cavity of the shell. The driven magnetic disk assembly is connected to the crushing part through a knife shaft, so that the driven magnetic disk assembly and the inner magnetic part can be effectively prevented from being exposed to the food in the cup body, and the driven magnetic disk assembly and the inner magnetic part can be better isolated and protected. The external magnetic part and the internal magnetic part are magnetically attracted to each other to lock the crushing device at the bottom of the cup body to prevent the crushing device from falling off when the cup body assembly is used for normal operation.

[0051] In order to avoid mutual magnetic interference between the driven disk assembly and the inner magnetic part which are simultaneously arranged in the shell, an axially offset step portion is provided on the inner side of the bottom wall of the shell, and the driven disk assembly and the inner magnetic part are respectively arranged in different axial sections of the step portion. As a result, the driven disk assembly and the inner magnetic part are axially offset from each other, especially the magnetic poles of the driven disk assembly and the inner magnetic part are axially offset from each other. In this way, the driven disk assembly and the inner magnetic part which are arranged in radial sequence are arranged in the same axial offset. The magnetic poles of the driven disk assembly and the inner magnetic part cannot be directly connected throughout the entire process, which also makes it impossible for the magnetic lines of force between the driven disk assembly and the inner magnetic part to form a closed loop, so as to ensure that more magnetic lines of force leak out between the driven disk assembly and the inner magnetic part, so as to meet the power transmission requirements of the driven disk assembly and the magnetic locking requirements of the inner magnetic part.

[0052] Specifically, such as Figure 1-8 As shown, the present application provides a food processor with reliable transmission. The food processor includes a base 100 and a cup assembly 110. The base 100 is equipped with a motor 101 and an active magnetic disk assembly 102 driven by the motor 101. The active magnetic disk assembly 102 is disposed on the upper portion of the base 100. The cup assembly 110 is detachably mounted above the base 100 and includes a cup body 120, a crushing device 2, and an external magnetic member 3. Since the bottom of the cup body 120 does not need to be provided with a through hole, it can be provided in a variety of ways. For example, the cup body 120 can be made of a single piece of stainless steel, or the cup body 120 can be made of a single piece of glass or ceramic. Preferably, the cup body 120 includes a body 121 and a blade disc 122. The body 121 is made of cylindrical glass and includes openings communicating with each other at the top and bottom. The blade disc 122 is disposed at the bottom opening of the body 121. The blade disc 122 is made of stainless steel and closes the bottom opening of the body 121.

[0053] The pulverizing device 2 comprises a housing, a pulverizing element 21, a blade shaft 222, a driven magnetic disk assembly 22, and an internal magnetic element 23. The housing defines a closed inner cavity. Preferably, the housing comprises an upper housing 24 and a bottom housing 5. The upper housing 24 has an open bottom, and the bottom housing 5 closes the bottom opening of the upper housing 24, thereby forming a closed inner cavity. Alternatively, the housing may comprise a top cover and a lower housing, wherein the lower housing defines a cavity, and the top cover closes the upper opening of the lower housing, thereby forming a closed inner cavity. The driven magnetic disk assembly 22 and the internal magnetic element 23 are disposed within the inner cavity. The blade shaft 222 passes through the housing to connect the driven magnetic disk assembly 22 and the pulverizing element 21. When the driven magnetic disk assembly 22 is driven by the active magnetic disk assembly 102, it rotates the pulverizing element 21, thereby achieving pulverization. The internal magnetic element 23 and the external magnetic element 3 are magnetically coupled to each other, thereby locking the pulverizing device within the cup body through the internal magnetic element 23.

[0054] In order to better achieve power transmission and reduce the structure inside the cup body assembly, the inner magnetic part 23 is radially located on the outer periphery of the driven disk assembly 22. In this way, when the cup body assembly 110 is installed on the machine base 100, the driven disk assembly is magnetically attracted to the active disk assembly 102 in the axial direction. At the same time, the outer magnetic part 3 and the inner magnetic part 23 can also be magnetically attracted to each other, which ensures the power transmission of the crushing device and stably locks the crushing device at the bottom of the cup, thereby achieving stable and reliable operation of the crushing device. Preferably, the magnetic poles of the driven disk assembly 22 and the inner magnetic part 23 are both arranged axially to better attract each other with the corresponding active disk assembly and the outer magnetic part. Furthermore, an axially displaced step portion is provided on the inner side of the bottom shell 5, and the driven disk assembly 22 and the inner magnetic part 23 are respectively installed in different axial sections of the step portion. Among them, the inner magnetic part 23 only needs to be magnetically attracted to the outer magnetic part 3 and does not need to rotate. Therefore, the inner magnetic part 23 can be fixedly installed on the step portion of the bottom shell 5; the driven magnetic disk assembly 22 needs to rotate and needs to retain a gap with the bottom shell 5 to avoid mutual friction during rotation. Therefore, the driven magnetic disk assembly 22 is correspondingly installed on the offset stage of the step portion.

[0055] Since the driven disk assembly 22 and the inner magnetic part 23 are axially offset, the magnetic poles of the two are offset from each other, thus preventing the magnetic poles of the driven disk assembly and the inner magnetic part located on the same plane from directly forming an internal magnetic circulation. The axial offset of the driven disk assembly and the inner magnetic part formed by the step portion can allow the driven disk assembly and the inner magnetic part to respectively have more magnetic lines of force leaking out, so as to magnetically attract each other with the corresponding active disk assembly and the outer magnetic part, fully ensuring sufficient torque transmission between the active disk assembly and the driven disk assembly, and sufficient locking force of the outer magnetic part on the inner magnetic part, so as to achieve the stability and reliability of the crushing device while transmitting strong power, and ultimately provide a technical solution for a food processing machine with stable and reliable transmission.

[0056] As a specific embodiment of the food processing machine with reliable transmission described in the utility model, Figure 1-3As shown, the food processor includes a base 100 and a cup assembly 110. The base 100 is provided with a motor 101. The motor 101 extends out of the base from the upper end, and an active magnetic disk assembly 102 is provided at the upper end of the motor shaft. The cup assembly 110 is detachably mounted on the upper end of the base 100. The cup assembly 110 includes a cup body 120, a crushing device 2, and an external magnetic member 3. Preferably, the cup body 120 includes a main body 121 and a blade disc 122. The main body 121 is a cylindrical glass material with upper and lower openings. The blade disc 122 is preferably made of stainless steel and closes the lower opening of the main body 121. The main body 121 and the blade disc 122 constitute a complete cup body 120, and the interior of the cup body 120 forms a processing chamber.

[0057] The crushing device 2 is detachably arranged at the bottom of the inner side of the cup body 120. Preferably, the bottom of the cutter disc 122 is provided with a cutter disc sink 123 extending downward. The crushing device 2 is arranged in the cutter disc sink 123 to better limit the crushing device 2. The crushing device 2 includes a shell, a crushing element 21, a cutter shaft 222, a driven magnetic disk assembly 22 and an internal magnetic element 23. The shell includes an upper shell 24 and a bottom shell 5. The bottom of the upper shell 24 is provided with an opening. The bottom shell 5 closes the bottom opening of the upper shell 24 to form an inner receiving chamber 25 inside the shell. The driven magnetic disk assembly 22 and the internal magnetic element 23 are arranged in the inner receiving chamber 25. The cutter shaft 222 passes through the upper shell 24 and is respectively connected to the driven magnetic disk assembly 22 and the crushing element 21. The cup assembly 110 is further provided with a cup support 124 at the outer bottom of the cup body 120. A transmission cavity 125 is further provided at the bottom of the cup support 124. When the cup assembly 110 is mounted on the base 100, the active magnetic disk assembly 102 is inserted into the transmission cavity 125 and brought into close contact with the bottom wall of the cup body 120, thereby enabling the active magnetic disk assembly 102 to engage with the driven magnetic disk assembly 22 for power transmission. When the driven magnetic disk assembly 22 is subjected to the magnetic driving force of the active magnetic disk assembly 102, it rotates, driving the cutter shaft 222 and the pulverizer 21 to rotate together.

[0058] The driven magnetic disk assembly 22 includes a driven magnetic disk body 221, a transmission bearing 223, and a shaft seal 224. Preferably, the driven magnetic disk body 221 is equipped with a transmission permanent magnet to magnetically cooperate with the active magnetic disk assembly 102, and the magnetic poles of the transmission permanent magnet are arranged axially. The transmission bearing 223 and the shaft seal 224 are installed on the upper shell 24, and the blade shaft 222 passes through the transmission bearing 223 and the shaft seal 224. Preferably, the transmission bearing 223 includes an inner rotating part connected to the blade shaft 222 and an outer rotating part connected to the upper shell 24. When the driven magnetic disk body 221 rotates, the inner rotating part and the outer rotating part of the transmission bearing 223 rotate relative to each other to achieve rotational support for the driven magnetic disk body 221, the blade shaft 222, and the crushing element 21. The shaft seal 224 can seal the inner receiving chamber 25 to prevent the food in the cup body assembly from flowing into the inner receiving chamber 25.

[0059] The inner magnetic member 23 is disposed within the inner housing chamber 25. Preferably, the inner magnetic member 23 is annular and surrounds the outer circumference of the driven magnetic disk body 221. Therefore, the inner magnetic member 23 and the driven magnetic disk body 221 are radially offset from each other. The inner side of the bottom shell 5 is provided with an axially offset step portion, which includes a first mounting platform 51 and a second mounting platform 52. The first mounting platform 51 is formed by shrinking the center of the bottom shell 5 inward, and the outer circumference of the bottom shell 5 forms the second mounting platform 52. The inner magnetic member 23 only needs to be magnetically attracted to the outer magnetic member 3 and does not need to rotate. Therefore, the inner magnetic member 23 is directly fixed to the second mounting platform 52 and directly adheres to the bottom shell 5. The driven magnetic disk assembly 22 needs to rotate. Therefore, the driven magnetic disk assembly 22 is disposed above the first mounting platform 51, and there is a rotational gap between the first mounting platform 51 to avoid friction between the driven magnetic disk assembly 22 and the first mounting platform 51.

[0060] The pulverizing device 2 further includes a magnetic isolation member 231 disposed within the inner receiving chamber 25. The magnetic isolation member 231 is made of a magnetically conductive material. The magnetic isolation member 231 is in contact with the inner magnetic member 23 and radially located between the inner magnetic member 23 and the driven magnetic disk assembly 22. The magnetic isolation member 231 can block the transmission of magnetic force between the driven magnetic disk assembly 22 and the inner magnetic member 23.

[0061] Due to the requirements of transmission and locking, the pulverizing device is provided with a driven disk assembly and an inner magnetic part, and both the driven disk assembly and the inner magnetic part are provided with permanent magnets. These permanent magnets interfere with each other, causing magnetic lines of force to form a closed loop between the driven disk assembly and the inner magnetic part, thereby affecting the power transmission of the driven disk assembly and the magnetic locking of the inner magnetic part. By providing a step portion at the bottom of the shell, the driven disk assembly and the inner magnetic part are arranged in different axial sections of the step portion, so that the driven disk assembly and the inner magnetic part have an axial height difference, thereby forming a height difference between the magnetic poles of the driven disk assembly and the inner magnetic part, thereby avoiding the formation of a closed internal connection between the driven disk assembly and the inner magnetic part, ensuring that more magnetic lines of force of the driven disk assembly and the inner magnetic part are leaked out, so as to interact with the corresponding active disk assembly and the outer magnetic part, ensuring torque transmission between the active disk assembly and the driven disk assembly, and magnetic locking between the outer magnetic part and the inner magnetic part. Furthermore, a magnetic isolation part is provided on the inner side wall of the inner magnetic part. The magnetic isolation part is located between the driven magnetic disk assembly and the inner magnetic part, which can better isolate the driven magnetic disk assembly and the inner magnetic part, thereby improving the transmission performance of the driven magnetic disk assembly and the magnetic locking performance of the inner magnetic part, ensuring that the crushing device is stably and reliably in the transmission position, realizing reliable power transmission, and ultimately providing users with a food processing machine with stable and reliable transmission.

[0062] As can be understood, the center of the bottom wall of the housing is recessed outward to form a first mounting platform, with the driven disk assembly positioned above the first mounting platform. The outer periphery of the first mounting platform forms a second mounting platform, with the internal magnetic member fixedly mounted on the second mounting platform. The outwardly recessed first mounting platform is closer to the exterior of the housing, which also brings the driven disk assembly closer to the active disk assembly. This increases the magnetic attraction between the active and driven disk assemblies, ensuring more stable and reliable power transmission.

[0063] It can be understood that the magnetic isolation member is directly fixed to the inner wall of the shell, and the magnetic isolation member forms a fixed installation structure for fixing the inner magnetic member, and the inner magnetic member is directly installed inside the shell through the magnetic isolation member.

[0064] It can be understood that the shell includes a lower shell and a top cover, the upper part of the lower shell is provided with an opening, the top cover is installed at the upper opening of the lower shell, and closes the lower shell to form a closed inner cavity in the shell; or, the shell includes an upper shell and a lower shell, the upper shell has an internal cavity and an opening at the bottom, the lower shell has a cavity inside and an opening at the top, and the upper shell and the lower shell are fixedly connected inside the shell to form a closed inner cavity.

[0065] It is understood that the inner magnetic member and the magnetic poles of the driven disk assembly can also be arranged in a variety of arrangements. For example, the driven disk assembly can be provided with multiple permanent magnets, the magnetic poles of which are arranged in a Halbach array to increase the magnetism of the driven disk assembly relative to the active disk assembly. Correspondingly, the inner magnetic member can also be provided with multiple permanent magnets, the magnetic poles of which are arranged in a Halbach array to increase the magnetism of the inner magnetic member relative to the outer magnetic member.

[0066] As another preferred embodiment of the food processing machine with reliable transmission described in the present application, Figure 4 、 5 As shown, a countersink is provided at the bottom center of the driven disk assembly, and the step portion includes a third mounting platform, which is formed by the first mounting platform protruding inwardly from the center area of ​​the countersink.

[0067] like Figure 4 、 5 As shown, the pulverizing device 2 includes a housing, a pulverizing element 21, a blade shaft 222, a driven magnetic disk assembly 22, and an inner magnetic element 23. The housing defines a closed inner cavity, and the driven magnetic disk assembly 22 and the inner magnetic element 23 are disposed within the inner cavity. Preferably, the housing includes an upper housing 24 and a bottom housing 5. The bottom of the upper housing 24 has an opening, and the bottom housing 5 closes the bottom opening of the upper housing 24 to form a closed cavity within the housing.

[0068] The driven magnetic disk assembly 22 includes a driven magnetic disk body 221, a transmission bearing 223 and a shaft seal 224. Preferably, the upper shell 24 is provided with a mounting hole for installing the transmission bearing 223 and the shaft seal 224. The transmission bearing 223 and the shaft seal 224 are coaxially arranged at the mounting hole. The knife shaft 222 passes through the bearing 223 and the shaft seal 224 to connect the driven magnetic disk body 221 and the crushing element 21. The bearing 223 supports the relative rotation between the knife shaft 222 and the upper shell 24. The shaft seal 224 is used to close the mounting hole of the upper shell 24 to prevent food from flowing into the inner cavity through the mounting hole. The top of the knife shaft 222 is also provided with a fixed head 211. Preferably, the fixed head 211 and the knife shaft 222 are connected by threads to fix the crushing element 21.

[0069] An axially displaced step portion is formed on the top of the bottom shell 5. Specifically, the step portion includes a first mounting platform 51, a second mounting platform 52, and a third mounting platform 53, wherein the first mounting platform 51 is formed by protruding inward from the center of the bottom wall of the bottom shell 5, thereby forming the second mounting platform 52 on the outer periphery of the bottom shell 5. Preferably, the bottom shell 5 is made of sheet metal, wherein the first mounting platform 51 is formed by punching inward from the outer side of the bottom of the bottom shell 5, thereby forming a receiving cavity 54 on the outer side of the bottom shell 5 corresponding to the first mounting platform 51. When the cup body assembly 110 is mounted on the base 100, the active disk assembly 102 can extend into the receiving cavity 54 to fit more closely with the driven disk assembly 22. Of course, it should be noted that, since a cup body is clamped between the driven disk assembly and the pulverizing device, when the size of the accommodating cavity 54 is not sufficient to accommodate the cup body and the active disk assembly, the active disk assembly may only have a tendency to extend into the accommodating cavity, but may not fully extend into the accommodating cavity in terms of spatial size.

[0070] The driven magnetic disk body 221 is provided with a driven magnet 2211. Preferably, in order to increase the magnetism of the driven magnetic disk body 221, the driven magnet 2211 is provided in plurality and is arranged around the driven magnetic disk body 221. In this way, a permanent magnet does not need to be provided at the center position of the driven magnetic disk body 221. Preferably, a countersunk hole 2213 is provided at the bottom center of the driven magnetic disk body 221. The countersunk hole 2213 can reduce the weight of the driven magnetic disk body 221 itself, facilitate the control of the balance of the driven magnetic disk body 221, and ensure that the driven magnetic disk assembly 22 is stable and reliable during power transmission. The magnetic poles of the driven magnet 2211 are arranged axially to magnetically cooperate with the active magnetic disk assembly 102 located below. Preferably, a transmission magnetic shield 2212 is further provided on the upper side of the driven magnet 2211, and the transmission magnetic shield 2212 guides the magnetic lines of force of the driven magnet 2211 to be transmitted to the active disk assembly 102 to increase the magnetic attraction between the driven disk assembly and the active disk assembly.

[0071] The first mounting platform 51 is located in the center area of ​​the countersunk hole 2213 and protrudes inward to form the third mounting platform 53. Preferably, the third mounting platform 53 can at least partially extend into the countersunk hole 2213 to limit the position of the driven disk body 221, ensuring that the driven disk assembly 22 operates more smoothly and the transmission is stable and reliable. Preferably, the first mounting platform 51, the second mounting platform 52, and the third mounting platform 53 are all configured as arc transitions.

[0072] The pulverizing device 2 also includes a magnetic isolation member 231 disposed in the inner receiving chamber 25, and the magnetic isolation member 231 is made of a magnetic conductive material. Preferably, the cross-section of the magnetic isolation member 231 is in an "L" shape, including a magnetic isolation side wall 2311 and a magnetic isolation top wall 2312, the magnetic isolation side wall 2311 is attached to the inner side wall of the inner magnetic member 23, the magnetic isolation top wall 2312 is attached to the top wall of the inner magnetic member 23, and the magnetic isolation side wall 2311 and the magnetic isolation top wall 2312 are connected at the top to form the magnetic isolation member 231. The magnetic isolation member is used to magnetically isolate the driven magnetic disk assembly and the inner magnetic member, thereby enhancing the external magnetic effect of the driven magnetic disk assembly and the inner magnetic member; further, by configuring the magnetic isolation member to include a magnetic isolation side wall and a magnetic isolation top wall, the magnetic isolation effect is better achieved.

[0073] Preferably, the magnetic isolation top wall 2312 is directly fixedly connected to the upper shell 24, and the magnetic isolation side wall 2311 extends toward the second mounting platform 52, so that the magnetic isolation component 231 forms an installation space for fixing the inner magnetic component 23, and the inner magnetic component 23 is correspondingly installed at the position of the second mounting platform 52, and the driven magnetic disk assembly 22 is correspondingly installed above the first mounting platform 51, so as to realize the axial offset setting of the inner magnetic component 23 and the driven magnetic disk assembly 22.

[0074] The bottom shell is used to form a stepped portion at the bottom, and the driven disk assembly and the inner magnetic component are respectively arranged in different axial sections of the stepped portion, thereby achieving axial misalignment of the inner magnetic component and the driven disk assembly. This prevents internal magnetic circulation between the driven disk assembly and the inner magnetic component, improves the magnetic output of the driven disk assembly and the inner magnetic component, and ultimately ensures that the pulverizing device can be reliably locked within the cup assembly and that the driven disk assembly achieves stable and reliable power output. Furthermore, by providing the countersunk hole and the third mounting platform, the weight of the driven disk body is reduced, and the driven disk body is limited by the third mounting platform, thereby improving the working stability of the driven disk assembly.

[0075] It can be understood that the second mounting platform can be punched from the inside out by the bottom shell, whereby the second mounting platform is formed by the inner side wall of the bottom shell being recessed inward, and an outward boss is formed on the outside of the bottom shell. The third mounting platform is formed by the bottom center of the first mounting platform bulging inward. The second mounting platform surrounds the outer circumference of the first mounting platform. Since the first mounting platform is punched from the inside out, the second mounting platform and the third mounting platform are both higher than the first mounting platform in the axial direction. The second mounting platform is used to install the internal magnetic part, and the third mounting platform is used to cooperate with the countersunk hole. There is no spatial position relationship between the two, so there is no need to specifically limit the height between the second mounting platform and the third mounting platform.

[0076] It can be understood that the magnetic isolation member can be fixedly connected to the bottom shell through the magnetic isolation side wall, and an installation space for fixing the inner magnetic member is formed between the magnetic isolation member and the bottom shell.

[0077] It can be understood that the magnetic isolation member can also be set as a frame with an opening at the bottom, the inner magnetic member is installed in the magnetic isolation member from the bottom, and the bottom opening of the magnetic isolation member is arranged opposite to the outer magnetic member.

[0078] It is understood that the inner magnetic member can also be directly mounted on the countersunk hole of the driven disk assembly, thereby making the driven disk body disposed on the outer periphery of the inner magnetic member, and the third mounting platform abutting against the inner magnetic member. In this way, the second mounting platform located on the outer periphery of the first mounting platform can also be omitted.

[0079] As another preferred embodiment of the food processing machine with reliable transmission described in the present application, Figure 6 、 7 As shown, a countersunk hole is provided at the bottom center of the driven disk assembly, a bearing is also provided at the countersunk hole, and the step portion includes a third mounting platform, which abuts against the bearing.

[0080] like Figure 6 、 7 As shown, the crushing device 2 is detachably arranged at the inner bottom of the cup body assembly 110. The crushing device 2 includes a shell, a crushing member 21, a knife shaft 222, a driven disk assembly 22 and an inner magnetic member 23. A closed inner cavity is formed inside the shell, and the driven disk assembly 22 and the inner magnetic member 23 are arranged in the inner cavity.

[0081] An axially offset stepped portion is formed at the top of the bottom shell 5. Specifically, the stepped portion includes a first mounting platform 51, a second mounting platform 52, and a third mounting platform 53. The first mounting platform 51 is formed by protruding inward from the center of the bottom wall of the bottom shell 5, thereby forming the second mounting platform 52 on the outer periphery of the bottom shell 5. The first mounting platform 51 is located in the center of the counterbore 2213 and protrudes inward to form the third mounting platform 53. A counterbore 2213 is provided at the bottom center of the driven magnetic disk body 221. Preferably, the driven magnetic disk assembly 22 also includes a bearing 26 disposed in the counterbore 2213. The bearing 26 includes a first rotating portion and a second rotating portion. When the bearing 26 is installed in the counterbore 2213, the first rotating portion is engaged in the counterbore 2213 to securely connect the first rotating portion to the driven magnetic disk body 221. The third mounting platform 53 abuts the second rotating portion.

[0082] The pulverizing device requires support for the driven disk assembly and the pulverizer, and utilizes the transmission bearing to facilitate relative rotation between the driven disk assembly, the pulverizer, and the housing. When the driven disk assembly and the active disk assembly are attracted to each other, magnetic attraction allows for power transmission. However, this also subjects the driven disk assembly to significant axial force, which is transmitted to the transmission bearing, pulling it and causing it to deviate from its original transmission position, impacting the transmission reliability of the pulverizing device. By further positioning a bearing in the countersunk hole and abutting the third mounting platform, axial forces acting on the driven disk assembly are directly applied to the bearing and transmitted through it to the third mounting platform, i.e., the housing. The housing itself absorbs the axial force, eliminating the need for the transmission bearing to bear it. The transmission bearing only needs to ensure relative rotation between the cutter shaft and the housing. The bearing rotates through the first and second rotating parts to prevent relative friction between the driven disk assembly and the third mounting platform, resulting in smoother and more reliable rotation of the driven disk assembly.

[0083] It is understandable that the first and second rotating parts merely define the two relatively rotating components of the bearing, and do not define the structural relationship between the bearing, the driven magnetic disk, and the housing. For example, the bearing includes a first and second rotating parts disposed within an inner and outer shell, with the first rotating part positioned outside the second rotating part. The driven magnetic disk may further include a mounting post located at the center of the countersunk hole, the bearing being mounted on the mounting post via the second rotating part, and the third mounting platform abutting the first rotating part of the bearing.

[0084] It can be understood that the bearing is configured as a plane bearing, including a first rotating part located on the upper side and a second rotating part located on the lower side, the first rotating part is installed in the countersunk hole, and the second rotating part is in contact with the third mounting platform.

[0085] It can be understood that the bearing is configured as a plane bearing, including a first rotating part located on the upper side and a second rotating part located on the lower side. The first rotating part is installed in the countersunk hole, and no third mounting platform is provided at the bottom of the shell. The second rotating part directly abuts against the second mounting platform.

[0086] As another preferred embodiment of the food processing machine with reliable transmission described in the present application, Figure 8 As shown, a support portion is further provided between the first mounting platform and the second mounting platform.

[0087] like Figure 8As shown, the pulverizing device 2 includes a housing, a pulverizing element 21, a blade shaft 222, a driven magnetic disk assembly 22, and an inner magnetic element 23. A closed inner cavity is formed inside the housing, and the driven magnetic disk assembly 22 and the inner magnetic element 23 are disposed within the inner cavity. Preferably, the housing includes an upper housing 24 and a bottom housing 5. The bottom of the upper housing 24 has an opening. The bottom housing 5 closes the bottom opening of the upper housing 24 to form a closed cavity inside. The driven magnetic disk assembly 22 and the inner magnetic element 23 are disposed within the inner cavity.

[0088] An axially offset stepped portion is formed on the top of the bottom shell 5. Specifically, the stepped portion includes a first mounting platform 51, a second mounting platform 52, and a third mounting platform 53. The first mounting platform 51 is formed by protruding inward from the center of the bottom wall of the bottom shell 5. Thus, the outer periphery of the bottom shell 5 forms the second mounting platform 52. The first mounting platform 51 protrudes inward from the center of the counterbore 2213 to form the third mounting platform 53.

[0089] The bottom shell 5 is located between the first mounting platform 51 and the second mounting platform 52 and is further provided with a support portion 55. The support portion 55 is formed by the bottom side of the bottom shell 5 protruding outward. Based on the bottom shell 5 being set with a plate-like material, the support portion 55 is punched outward from the inside, thereby forming an annular recess for the support portion 55 inside the bottom 5.

[0090] When the user places the crushing device 2 on the work surface, the support portion 55 contacts the work surface, thereby increasing the distance between the driven disk assembly and the work surface, and avoiding the situation where the driven disk assembly is directly adsorbed on the work surface when the distance between the driven disk assembly and the work surface is too close, making it inconvenient for the user to operate the driven disk assembly.

[0091] Of course, the primary purpose of the first and second mounting platforms is to achieve axial misalignment between the driven disk assembly and the inner magnetic component. With the support portion axially below both, the first mounting platform can be axially positioned above the second mounting platform, or alternatively, the first mounting platform can be axially positioned below the second mounting platform. Depending on the mounting structure of the pulverizing device, different mounting methods can be selected to ultimately achieve axial misalignment between the driven disk assembly and the inner magnetic component.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A food processing machine with reliable transmission, characterized in that: The food processing machine comprises, A machine base is provided with a motor and an active disk assembly driven by the motor; a cup assembly detachably mounted on the machine base, the cup assembly comprising a cup body, a crushing device detachably mounted on the inner side of the cup body, and an external magnetic member located outside the cup body; The pulverizing device includes a housing, a pulverizing element, a cutter shaft, a driven magnetic disk assembly that is magnetically driven by the active magnetic disk assembly and drives the pulverizing element to work, and an inner magnetic element that is magnetically attracted to the outer magnetic element; In which, the shell has an inner cavity for accommodating the driven disk assembly and the inner magnetic part, and an axially displaced step portion is provided on the inner side of the bottom wall of the shell. The driven disk assembly and the inner magnetic part are respectively arranged in different axial sections of the step portion, so that the magnetic poles of the driven disk assembly and the inner magnetic part are axially displaced.

2. The food processing machine with reliable transmission as claimed in claim 1, characterized in that: The step portion includes a first mounting platform formed by protruding inward from the center of the bottom wall and a second mounting platform formed on the outer periphery of the bottom wall. The driven disk assembly is located above the first mounting platform, and the inner magnetic part surrounds the outer periphery of the driven disk assembly and is mounted on the second mounting platform.

3. The food processing machine with reliable transmission as claimed in claim 2, characterized in that: The outer side of the bottom wall is recessed inwardly corresponding to the first mounting platform to form an accommodating cavity. The active disk assembly extends into the accommodating cavity and is axially magnetically attracted to the driven disk assembly.

4. The food processing machine with reliable transmission as claimed in claim 1, characterized in that: The step portion includes a first mounting platform that is axially offset and a second mounting platform surrounding the outer periphery of the first mounting platform, a supporting portion located between the first mounting platform and the second mounting platform and protruding outward from the bottom wall, the driven magnetic disk assembly is located above the first mounting platform, and the inner magnetic component surrounds the outer periphery of the driven magnetic disk assembly and is mounted on the second mounting platform.

5. The food processing machine with reliable transmission as claimed in claim 2 or 4, characterized in that: A countersunk hole is provided at the center of the bottom of the driven disk assembly, and the first mounting platform is located in the center area of ​​the countersunk hole and protrudes inwardly to form a third mounting platform.

6. The food processing machine with reliable transmission as claimed in claim 5, characterized in that: The driven disk assembly includes a bearing mounted on the counterbore. The bearing includes a first rotating portion connected to the counterbore and a second rotating portion abutting against the third mounting platform.

7. The food processing machine with reliable transmission as claimed in claim 1, characterized in that: The pulverizing device further comprises a magnetic isolation member made of a magnetic conductive material, wherein the magnetic isolation member is located in the inner cavity and between the driven magnetic disk assembly and the inner magnetic member.

8. The food processing machine with reliable transmission as claimed in claim 7, characterized in that: The magnetic isolation component is fixedly connected to the inner wall of the shell and forms an installation space for fixing the inner magnetic component.

9. The food processing machine with reliable transmission as claimed in claim 7, characterized in that: The driven disk assembly includes a driven magnet, the inner magnetic part includes an inner magnet, the magnetic poles of the driven magnet and the inner magnet are both arranged axially, and the cross-section of the magnetic isolation part is "L"-shaped and is respectively in contact with the inner side wall and top wall of the inner magnet.

10. The food processing machine with reliable transmission as claimed in claim 1, characterized in that: The inner magnetic member is located at the outer periphery of the driven magnetic disk assembly in the radial direction, and the magnetic poles of the inner magnetic member and the driven magnetic disk assembly are arranged in the axial direction.

Images