Stable and reliable food processor

Abstract

The utility model discloses a stable and reliable food processor, comprising: a base provided with a motor and a lower magnetic disk assembly driven by the motor; a crushing device mounted on the inner side of the cup bottom is arranged in the cup body; the crushing device comprises a crushing part and an upper magnetic disk which is attracted with the lower magnetic disk assembly and is driven by the lower magnetic disk assembly to drive the crushing part to work; the limiting structure is arranged between the lower magnetic disc assembly and the cup bottom and located at the rotating center of the lower magnetic disc assembly; the lower magnetic disk assembly has a first position and a second position which is pressed by the cup body to move downwards and is close to the outer side of the cup bottom after the cup body is placed, and a gap is formed between the lower magnetic disk assembly and the cup bottom through the limiting structure. The displacement of the lower magnetic disk assembly switched from the first position to the second position in the axial direction is used for absorbing the assembly tolerance and the use error of the food processor, it is guaranteed that the distance between the lower magnetic disk assembly and the upper magnetic disk is at the preset minimum, and therefore it is guaranteed that power transmission between the lower magnetic disk assembly and the upper magnetic disk is stable and reliable.

Description

Technical Field

[0001] The present application relates to the field of food processing, and in particular to a food processing machine having a machine base and a cup body and adopting magnetic non-contact transmission processing. Background Art

[0002] Existing blenders or food processors usually include a base and a detachable cup mounted on the base. The base is equipped with a motor, and the cup is equipped with a crushing element for crushing food. The rotation of the motor drives the crushing element to rotate, thereby achieving the cutting and crushing of food. Since the motor and crushing element of the blender rotate at high speed during operation, the impact generated by the collision between the crushing element and the food reacts to the motor through the connecting parts, 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 issue in solving vibration and noise problems.

[0003] Based on this, the applicant has proposed a non-contact transmission scheme. For example, Chinese utility model patent CN201020015043.4 discloses a non-contact transmission soybean milk maker, in which a magnetic non-contact upper coupling and lower coupling are provided between the motor and the crushing cutter, including upper and lower transmission modes and internal and external transmission modes. Because the couplings do not directly contact each other, noise and vibration are significantly reduced during operation. Based on this, the applicant has further proposed an improved non-contact transmission scheme. For example, Chinese invention patent CN201120194553.7 discloses an indirect transmission food processing machine, including an active coupling disposed on the motor power output shaft and a driven coupling connected to the crushing cutter. The driven coupling is provided with 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. This scheme can configure the cup body into a completely closed bottom structure without mechanical connection holes, thereby better solving the leakage problem of the mixing cup.

[0004] As previously mentioned, the applicant also configured the driven coupling and pulverizing blade to have an axial floating space. While this solution solves the technical problem of blade jamming, it does not fundamentally address the issue. This is because the blade jamming is caused by the different power of the pulverizing blades, that is, insufficient magnetic interaction between the driving coupling and the driven coupling. The solution to this problem should be to increase the magnetic interaction force, including increasing the magnetic charge of the magnets and reducing the distance between them. However, the floating arrangement of the prior art further increases the distance between the driven coupling and the driving coupling when the driven coupling floats upward, further reducing the magnetic interaction force between the two. In other words, the prior art provides a technical solution that contradicts this. In particular, when the driven coupling and pulverizing blade are disposed within the cup body and have an axial floating space, if the driven coupling and pulverizing blade are continuously stuck at the upper end of the floating space, they will always be in a low torque state, thereby affecting the power transmission of the driven coupling and forming a vicious cycle. At the same time, this setting method cannot control the gap between the active coupling and the cup body. If the active coupling and the cup body are also at a large distance, the food processor may not even work properly.

[0005] In the prior art, there is also a solution that uses magnetism for contact transmission. For example, Chinese utility model patent CN202222307890.3 discloses a food processor comprising a machine head and a blending blade assembly. The machine head includes a motor and a magnetic drive member connected to the motor, and the blending blade assembly includes a magnetic drive member. The magnetic drive member is an electromagnet. When powered on, the magnetic drive member becomes magnetically attracted to the magnetic drive member, and the motor drives the blending blade to rotate within the food processor. When powered off, the magnetic drive member demagnetizes and separates from the magnetic drive member, and the magnetic drive member resets under the elastic force of the elastic reset member. In other words, this solution is a transmission solution that utilizes magnetic attraction. The magnetic drive member and the magnetic transmission member are still in contact with each other. Therefore, the impact on the stirring blade assembly will still be transmitted to the motor and the head through the magnetic transmission member and the magnetic drive member. It is not a "non-contact" transmission solution with complete mechanical isolation; secondly, the magnetic drive member and the magnetic transmission member are directly attracted to each other, and during the working process, the two are required to rotate synchronously. If there is a speed difference between the two, relative friction will occur between the magnetic drive member and the magnetic transmission member, which will affect the normal operation of the two; furthermore, since the magnetic drive member and the magnetic transmission member need to be directly attracted, and the magnetic transmission member needs to further drive the stirring blade located in the cooking cup assembly to rotate, the stirring cup assembly must be provided with a transmission structure that passes through the stirring cup assembly, for example, a transmission shaft needs to be provided to pass through the cup body or the cup lid, that is, the stirring cup assembly cannot be configured as a truly completely mechanically through-hole-free solution.

[0006] Various solutions in the existing technology do not address the needs of magnetic transmission solutions, that is, under the premise of non-contact, the distance between the upper coupling and the lower coupling that transmit to each other is small enough, and the distance between the upper coupling and the lower coupling can be guaranteed to be stable, and the torque transmitted between the lower coupling and the upper coupling will not fluctuate due to the jump of the distance. Summary of the Invention

[0007] The purpose of the utility model is to provide a stable and reliable food processing machine to solve the technical problem in the prior art of food processing machines with a detachable cup body relative to the machine base, which is caused by the superposition of multiple factors such as accessory tolerances, product assembly tolerance size chains, product assembly deviations, user usage deviations, and product wear deviations, resulting in a large change in the distance between the upper magnetic disk and the lower magnetic disk assembly, which leads to unstable magnetic interaction force between the upper magnetic disk and the lower magnetic disk assembly, and thus easily causes insufficient power transmission.

[0008] In order to solve the above technical problems, the present application provides a stable and reliable food processing machine, wherein the food processing machine includes: a machine base, provided with a motor and a lower magnetic disk assembly driven by the motor; a cup body, detachably mounted on the machine base, the cup body being provided with a crushing device mounted on the inner side of the cup bottom; the crushing device including a crushing piece, an upper magnetic disk attracted to the lower magnetic disk assembly and driving the crushing piece to work under the drive of the lower magnetic disk assembly; a limiting structure, arranged between the lower magnetic disk assembly and the cup bottom, the limiting structure being located at the rotation center of the lower magnetic disk assembly; a lower magnetic disk assembly, the lower magnetic disk assembly including a disk body and a permanent magnet arranged on the disk body, the lower magnetic disk assembly having a first position and a second position in which the cup body is placed and is pressed downward by the cup body and close to the outer side of the cup bottom, the limiting structure allowing a gap to exist between the lower magnetic disk assembly and the cup bottom.

[0009] Preferably, the lower disk assembly is provided with a limiting hole sleeved on the motor shaft, and the lower disk assembly can move axially along the motor shaft and the limiting hole to switch between the first position and the second position.

[0010] Preferably, the lower disk assembly is fixedly connected to the motor, and the motor is movably mounted on the base. The motor and the lower disk assembly are switched from the first position to the second position under the pressure of the cup body.

[0011] Preferably, the base is further provided with an elastic member for pushing the lower disk assembly to switch from the second position to the first position.

[0012] Preferably, the limiting structure includes a bearing, and the bearing includes a first rotating part and a second rotating part that rotate relative to each other, and the first rotating part and the second rotating part are in contact with the lower disk assembly and the cup bottom respectively, so that the lower disk assembly and the cup bottom rotate relative to each other through the bearing.

[0013] Preferably, the rotation center of the lower disk assembly is provided with a mounting hole for accommodating the bearing, the first rotating part is fixedly connected to the lower disk assembly, the second rotating part protrudes from the upper end surface of the lower disk assembly, and the second rotating part in the second position contacts the bottom of the cup.

[0014] Preferably, the permanent magnet of the lower magnetic disk assembly surrounds the outer periphery of the bearing.

[0015] Preferably, the second rotating portion is further provided with an abutment member, and the abutment member protrudes from the upper end surface of the lower magnetic disk assembly.

[0016] Preferably, the crushing device is detachably arranged on the inner side of the bottom of the cup body.

[0017] Preferably, the limiting structure includes a protrusion extending downward from the cup bottom, the protrusion contacts the lower disk assembly and rotates relative to the lower disk assembly; or, the limiting structure includes a protrusion extending upward from the upper disk, the protrusion contacts the cup bottom and rotates relative to the cup bottom.

[0018] Compared with the existing technology, this application has at least the following technical effects:

[0019] 1. This application continues the applicant's technical direction in non-contact transmission, using a mutually magnetically attracted upper and lower magnetic disk assembly to achieve power transmission between the motor and the pulverizing device, fundamentally preventing the pulverizer from transmitting vibration and noise during operation to the motor. The pulverizing device is positioned at the bottom of the cup, allowing it to fully fit the cup bottom. Furthermore, the lower magnetic disk assembly is configured to have a first position and a second position, and when the cup body is installed, the cup body can compress the lower magnetic disk assembly from the first position to the second position. As a result, the distance between the upper and lower magnetic disk assemblies is only related to the distance from the upper magnetic disk to the cup bottom, the distance from the lower magnetic disk assembly to the cup bottom, and the thickness of the cup bottom itself, and is independent of the assembly relationship of the food processor. Therefore, the crushing device is positioned at the bottom of the cup to ensure that the distance between the upper disk and the cup bottom is at a controllable minimum. The lower disk assembly is always in close proximity to the cup bottom, ensuring that the distance between the lower disk assembly and the cup bottom is also at a controllable minimum. The limiting structure ensures that the distance between the lower disk assembly and the cup bottom is stable and reliable. Thus, the distance between the lower disk assembly and the upper disk is always at a stable, reliable, and controllable minimum, thereby achieving stable and reliable power transmission between the lower disk assembly and the upper disk without contact. The lower disk assembly is configured to have a first position and a second position. Preferably, the first position of the lower disk assembly is axially higher than the second position. Generally, the first position refers to the natural state of the lower disk assembly when it is mounted on the machine base, without the cup body and crushing device, and without any other external forces acting on the lower disk assembly. Correspondingly, the second position refers to the position reached after the cup body is mounted on the machine base, when the cup body compresses the lower disk assembly downward, and in the second position, the lower disk assembly is close to the outside of the cup bottom. A positioning platform and a positioning groove that are mutually positioned and matched are provided between the cup body and the base. When the cup body is installed on the base, the positioning platform and the positioning groove can ensure that the lower disk assembly and the crushing device, especially the lower disk assembly and the upper disk, can maintain concentricity, so as to ensure that the lower disk assembly can better drive the upper disk. The lower disk assembly includes a disk body and a permanent magnet provided on the disk body. Preferably, the permanent magnet is located at the upper end of the disk body, and the disk body is used to fix the permanent magnet, so as to ensure that the permanent magnet can better achieve the purpose of magnetic drive and has better structural strength. At the same time, the permanent magnet can be provided in multiple numbers, and the magnetic force between the upper disk and the lower disk assembly can be enhanced by magnetic arrangement and combination. Furthermore, the disk body can accommodate the permanent magnet by providing a closed installation cavity to prevent the permanent magnet from being corroded by dust and liquid when it is directly leaked out, thereby affecting the magnetism of the permanent magnet, and ensuring that the lower disk assembly can be in a stable output state for a longer period of time.

[0020] The lower disk assembly is positioned in a first position with a larger positive tolerance. Specifically, within a predetermined tolerance chain, the axial height dimension of the lower disk assembly in the first position is set to be greater than or equal to the maximum tolerance dimension. This ensures that regardless of how the food processor is assembled, how the cup is placed on the base, or when different cups and bases are used, the lower disk assembly in the first position will initially contact the cup base. Furthermore, the lower disk assembly can be moved downward from the first position to the second position under pressure from the cup, preventing the cup from being properly installed when the lower disk assembly is fixed in the first position. The displacement difference between the first and second positions is utilized to absorb the positive tolerance of the lower disk assembly, ensuring close proximity between the lower disk assembly and the cup base while also ensuring proper installation and positioning of the cup and base. The positive tolerance setting of the lower disk assembly can absorb the dimensional changes caused by various factors such as the tolerance of the accessories themselves, the tolerance dimension chain of product assembly, the assembly deviation of the product, the deviation caused by different user habits, and the deviation caused by product wear. When the cup body is installed in place, it can ensure that the lower disk assembly and the cup body are in contact with each other, thereby greatly ensuring that the distance between the upper disk and the lower disk assembly is minimized.

[0021] The primary purpose of providing a limiting structure is to provide a safe gap between the lower disk assembly and the cup bottom that allows for rotation between the lower disk assembly and the cup bottom, thereby ensuring that the lower disk assembly can stably and reliably rotate close to the cup bottom and drive the upper disk to operate. Although the distance between the lower disk assembly and the upper disk is smaller when the lower disk assembly and the cup bottom are in direct contact, the lower disk assembly in direct contact will rotate relative to the cup bottom and rub against it during operation. By clamping the lower disk assembly between the cup bottom and performing the relative rotation function, the limiting structure effectively controls the distance between the lower disk assembly and the upper disk, while avoiding relative friction caused by large-area contact between the lower disk assembly and the cup bottom, allowing the lower disk assembly to stably and reliably rotate relative to the cup bottom. Since the purpose of the limiting structure is to ensure a stable and reliable gap between the lower disk assembly and the cup bottom, when the lower disk assembly is pressed by the cup body and switches from the first position to the second position, the limiting structure first bears the squeezing force of the cup body and transmits this squeezing force to the lower disk assembly, thereby forcing the lower disk assembly to move to the second position. During this process, the limiting structure is always clamped between the lower disk assembly and the cup bottom, preventing the lower disk assembly and the cup body from directly contacting each other. It also ensures that the distance between the lower disk assembly and the cup bottom is stable and reliable, thereby ensuring that the magnetic force between the lower disk assembly and the upper disk is stable and reliable. There are multiple implementations for the structure and position of the limiting structure itself. The limiting structure can be set on the lower disk assembly so that when the cup body is installed, the lower disk assembly contacts the cup bottom; or the limiting structure can be set on the cup bottom so that when the cup body is installed, the limiting structure contacts the lower disk assembly. The limiting structure can also be set as two parts, which are respectively arranged on the lower disk assembly and the cup bottom. When the cup body is installed, the two parts of the limiting structure are combined and connected to achieve relative rotation between the lower disk assembly and the cup bottom, and to create a gap between the lower disk assembly and the cup bottom.

[0022] The lower magnetic disk assembly is designed to maintain a positive tolerance to ensure it always fits close to the cup bottom, ensuring that the distance between the lower magnetic disk assembly and the upper magnetic disk is minimized regardless of how the cup body is assembled on the machine base. Furthermore, a retaining structure is utilized to ensure that a gap exists between the lower magnetic disk assembly and the cup bottom while maintaining the optimal distance, eliminating friction between the lower magnetic disk assembly and the cup bottom during rotation due to direct contact between the lower magnetic disk assembly and the cup bottom. The retaining structure is directly attached to the lower magnetic disk assembly or the cup bottom, ensuring that the retaining structure and the lower magnetic disk assembly, or the cup bottom, are directly assembled. This effectively ensures the assembly tolerances of the retaining structure and the lower magnetic disk assembly or the cup bottom. Furthermore, further processing can be performed after the retaining structure and the lower magnetic disk assembly or the cup bottom are assembled, achieving even higher assembly precision. With this arrangement, when the cup body and the crushing device are mounted on the machine base, the upper magnetic disk can consistently attract the lower magnetic disk assembly to the second position regardless of how the cup body is installed. The limiting structure further ensures that the lower magnetic disk assembly, while remaining close to the cup bottom, maintains a gap between them. Ultimately, the distance between the upper and lower magnetic disk assemblies is minimized, thereby maximizing the magnetic interaction between the lower and upper magnetic disks. This allows the motor's torque to be transferred from the lower magnetic disk assembly to the upper magnetic disk to the greatest extent possible, ensuring sufficient torque between the upper magnetic disk and the crushing element for comminution and cutting. This eliminates the vibration and noise transfer that occurs when the motor and crushing element are in direct mechanical contact, while also ensuring power transmission between the motor and crushing element, providing users with a food processor with low noise reduction and stable and reliable power transmission.

[0023] 2. The lower disk assembly is provided with a stopper hole, and the lower disk assembly is axially movable along the stopper hole to switch between a first position and a second position. When the cup body is installed, the lower disk assembly is pressed by the cup body to switch from the first position to the second position. When the cup body is removed, the lower disk assembly returns to the first position from the second position. This process, relying solely on the vertical positional switching of the lower disk assembly, satisfies the requirement of utilizing displacement to alter the tolerance chain of absorbent products. The lower disk assembly includes both axial positional switching and circumferential rotational movement. In actual operation, when the cup body is installed, the lower disk assembly is pressed and switches to the second position, during which the food processor is not in operation. During rotational operation driven by the motor, the lower disk assembly remains in the second position. In other words, axial movement and circumferential rotation of the lower disk assembly do not occur simultaneously, ensuring stable operation of the lower disk assembly in all its movement states. Even if the cup body is abnormally lifted up during the operation of the food processor, due to the safety properties of the food processor itself, when the cup body is lifted up, the machine base will promptly cut off the power supply of the motor and stop the motor from working, and the lower disk assembly can also be reset in time after the motor stops.

[0024] 3. Preferably, the lower disk assembly is fixedly connected to the motor. Furthermore, the motor is movably mounted on the base, and the motor and the lower disk assembly are integrally switched between the first position and the second position. Generally speaking, due to operational requirements, the motor itself is machined with high precision to ensure stable and reliable operation. The lower disk assembly is then fixedly mounted on the motor, and the precision between the lower disk assembly and the motor is also ensured. This allows the motor and the lower disk assembly to form a high-precision integral component, which is movably mounted in the base and switched between the first position and the second position. This ensures that the distance between the lower disk assembly and the upper disk is controllable, and also ensures stability and reliability between the motor and the lower disk assembly.

[0025] 4. An elastic member is further provided to push the lower disk assembly back from the second position to the first position. After the cup body and pulverizing device are removed, the lower disk assembly is pushed by the elastic member to switch from the second position to the first position. The elastic member ensures that the lower disk assembly quickly returns from the second position to the first position, ensuring that it remains in the preset close position during subsequent use. This ensures that the lower disk assembly remains in the first position, initially contacting the cup bottom, when the cup body is next placed. Ultimately, the lower disk assembly and the cup bottom are in close proximity but not in contact. Of course, it should be noted that the return of the lower disk assembly from the second position to the first position does not necessarily rely entirely on the elastic member. For example, a sealed fitting space is provided between the lower disk assembly and the motor shaft, and there is gas in the sealed fitting space. When the lower disk assembly is pressed and moved from the first position to the second position, the gas in the sealed space is compressed. When the cup body is removed, the gas pushes the lower disk assembly from the second position to the first position. Alternatively, because both the upper disk and the lower disk assembly are provided with permanent magnets, the lower disk assembly can be attracted by the upper disk. When the cup body is removed, the lower disk assembly can be returned from the second position to the first position with the help of the attraction of the upper disk. Alternatively, the cup body is provided with a magnetic member that attracts the lower disk assembly, or the base is provided with a magnetic member that is of the same polarity and repels the lower disk assembly, so as to push the lower disk assembly from the second position to the first position. The magnetic member can be a permanent magnet or an electromagnet.

[0026] 5. The bearing, while supporting relative rotation between the lower disk assembly and the cup base, enables stable and reliable power transmission between the lower disk assembly and the cup base, while minimizing the distance between them. Furthermore, the bearing comprises a first rotating portion and a second rotating portion, one of which is mounted on the outside of the lower disk assembly or the cup base, and the other contacts the opposing cup base or lower disk assembly. For example, the bearing is mounted on the lower disk assembly via the first rotating portion. When the cup body is mounted, the second rotating portion contacts the cup base, creating a gap between the upper end surface of the lower disk assembly and the cup base. During operation, the first rotating portion rotates with the lower disk assembly, while the second rotating portion remains stationary relative to the cup base. Thus, the relative rotation of the first and second rotating portions enables non-contact relative rotation between the lower disk assembly and the cup base. The bearing itself is capable of withstanding high speeds and prolonged relative rotation, thereby meeting the high speed requirements of the lower disk assembly and ensuring the stability and reliability of the food processor during extended operation.

[0027] 6. A mounting hole is provided at the rotational center of the lower disk assembly, and the bearing is positioned within the mounting hole. The second rotating portion of the bearing protrudes from the upper end surface of the lower disk assembly. The height of the bearing protruding from the lower disk assembly defines the gap between the upper end surface of the lower disk assembly and the cup bottom. Thus, when the cup is installed, the cup bottom first contacts the second rotating portion of the bearing, creating a gap between the lower disk assembly and the cup bottom. This eliminates direct friction between the lower disk assembly and the cup bottom during rotation of the lower disk assembly. The bearing is directly mounted on the lower disk assembly, creating a single-level mounting relationship between the two. This facilitates control of the mating dimensions of the lower disk assembly and the bearing, enabling reliable control of the bearing's protrusion from the upper end surface of the lower disk assembly and ultimately controlling the gap between the lower disk assembly and the cup bottom, ensuring a stable, reliable, and minimal distance between the lower disk assembly and the upper disk.

[0028] 7. The permanent magnets of the lower disk assembly are arranged around the outer periphery of the bearing. These permanent magnets can be directly adjacent to the cup bottom without direct contact with it, ultimately ensuring a sufficiently small distance between the lower disk assembly and the permanent magnets of the upper disk, while maintaining stability and reliability under the control of the bearing. The bearing at the rotational center of the lower disk assembly does not need to have an excessively large diameter. During high-speed rotation of the lower disk assembly, the linear velocity of the bearing itself is relatively small, ensuring that the bearing can withstand higher speed requirements. The permanent magnets surrounding the outer periphery of the bearing have a larger diameter and circumference, allowing for a larger volume with the same thickness. This increases the magnetic flux of the permanent magnets, enhances the magnetic interaction between the lower and upper disks, and achieves stronger torque transmission. Furthermore, the magnetic poles of the permanent magnets of the upper and lower disk assemblies are arranged opposite each other to ensure the strongest magnetic interaction between them. In this case, the permanent magnets surrounding the outer periphery of the bearing prevent the permanent magnets from exerting a strong magnetic attraction on the bearing when their magnetic poles directly face the bearing, thereby affecting its stable and reliable operation.

[0029] 8. Generally speaking, standard bearings are selected to reduce costs. However, the configuration of the first and second rotating parts of standard bearings, as well as the height of the second rotating part protruding from the upper end surface of the lower magnetic disk assembly, may not fully meet the specific requirements of a food processor. Preferably, an abutment is provided on the second rotating part. When the cup body is installed, the abutment contacts the cup bottom. This allows the distance between the lower magnetic disk assembly and the cup bottom to be controlled. In particular, after the bearing is assembled with the lower magnetic disk assembly, the abutment can be machined to more precisely control the height of the abutment protruding from the lower magnetic disk assembly, thereby precisely controlling the distance between the lower magnetic disk assembly and the cup bottom. Since the lower disk assembly moves downward by relying on the pressure of the cup body and switches from the first position to the second position, the limiting structure must withstand the reaction force of the lower disk assembly and the magnetic attraction force between the lower disk assembly and the upper disk, and such forces are borne by the bearing. Although the relative rotation between the lower disk assembly and the cup bottom is borne by the bearing, friction between the lower disk assembly and the cup bottom is avoided, and there is no relative rotation during the contact process with the cup bottom, the above-mentioned force will cause the limiting structure to be at risk of accelerated wear during the service life of the food processor. The abutment is provided and is used to withstand the force of the limiting structure. When the abutment is worn, the abutment can be directly replaced to avoid replacing other accessories with higher costs, thereby achieving low-cost life cycle maintenance.

[0030] 9. As previously mentioned, the provision of a non-contact magnetic transmission structure prevents the pulverizer from transmitting vibration and noise to the main unit and motor during operation. Furthermore, the non-contact magnetic transmission structure facilitates the configuration of the cup body with a completely enclosed bottom. Thus, the pulverizing device can be located inside the cup bottom. Preferably, the pulverizing device is detachably located inside the cup bottom. This arrangement, while maintaining the aforementioned advantages, allows the pulverizing device to be installed when necessary and omitted when not necessary. For example, if the food processor only requires a heating or cooking function, such as boiling water, the pulverizing device can be installed to achieve the corresponding function. Omitting the pulverizing device also simplifies the internal structure of the cup body, making operations such as cleaning the interior of the cup body more convenient.

[0031] It should be noted that the lower disk assembly switches from the first position to the second position under the pressure of the cup body. Therefore, when the cup body is mounted on the machine base, whether the crushing device is installed or not does not affect the switching of the lower disk assembly from the first position to the second position. However, when the crushing device is not installed, the lower disk assembly has no components that require driving. Therefore, the motor and lower disk assembly are typically deactivated. Only non-crushing functions are required. For example, if the cup body has a heating function, only the heating element is activated to achieve the heating and boiling function.

[0032] 10. The purpose of the limiting structure is to withstand the relative friction between the lower disk assembly and the cup bottom while ensuring the distance between them. Therefore, the limiting structure can be directly provided on the lower disk assembly or the cup bottom. For example, a protrusion protruding toward the lower disk assembly is provided on the bottom of the cup bottom, or a protrusion protruding toward the cup bottom is provided on the lower disk assembly. When the cup body is installed, the protrusion provided on the lower disk assembly or the cup bottom abuts against the cup bottom or the lower disk assembly, so that there is a gap between the upper end surface of the lower disk assembly and the cup bottom, thereby avoiding direct friction between the main body of the lower disk assembly and the cup bottom. It should be noted that, since the protrusion is directly protruded from the lower disk assembly or the cup bottom, the protrusion will have relative friction during contact operation. For example, the protrusion provided on the lower disk assembly will have relative friction with the cup bottom when the lower disk assembly rotates. Therefore, on the one hand, the protrusion is provided at the rotation center of the lower disk assembly, and on the other hand, the radius of the protrusion must be reduced to reduce the rotational linear velocity of the protrusion and reduce the friction force on the protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a stable and reliable food processing machine described in the present invention.

[0034] Figure 2 This is a schematic diagram of the exploded structure of the upper and lower disk components of the first embodiment of the stable and reliable food processing machine of the present invention.

[0035] Figure 3 This is a cross-sectional view of the upper and lower disk assemblies of the first embodiment of the stable and reliable food processing machine of the present invention.

[0036] Figure 4A This is a schematic diagram of the disk assembly in the first position of the first embodiment of the stable and reliable food processing machine according to the present invention.

[0037] Figure 4BThis is a schematic diagram of the disk assembly in the second position of the first embodiment of the stable and reliable food processing machine according to the present invention.

[0038] Figure 5 for Figure 4B A partial enlarged schematic diagram of the middle A.

[0039] Figure 6 This is a diagram showing the distance and magnetic attraction distribution between the upper and lower magnetic disk assemblies of the stable and reliable food processing machine described in the present invention.

[0040] Figure 7 This is a schematic diagram of the base structure of the second embodiment of the stable and reliable food processing machine described in the present invention.

[0041] The corresponding names in the figure are as follows:

[0042] 100. Base; 101. Upper housing; 102. Lower housing; 103. Motor screw; 110. Cup body; 111. Cup bottom; 112. Sink; 113. Sink; 120. Locating ring; 121. Locating slot; 2. Motor; 21. Motor shaft; 211. Limiting column; 22. Locking screw; 23. Return spring; 24. Motor mounting bracket; 3. Lower disk assembly; 31. Lower disk body; 311. Limiting hole ; 312. Mounting hole; 313. Mounting cavity; 32. Lower magnet; 33. Lower cover; 4. Crushing device; 41. Upper magnetic disk; 42. Upper magnet; 43. Fixed shell; 431. Shell bottom; 432. Fixed cavity; 434. Upper bearing; 435. Shaft seal; 44. Knife shaft; 45. Crushing part; 5. Limiting structure; 51. Bearing; 511. Outer ring; 512. Ball; 513. Inner ring; 52. Abutment part. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] In addition, in the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or 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 position, be constructed, or operate in a specific position. Therefore, they should not be construed as limitations on this invention. Terms such as "upstream" and "downstream" are based on positional relationships during normal fluid flow.

[0046] 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.

[0047] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; 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 utility model based on specific circumstances.

[0048] 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.

[0049] 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.

[0050] As mentioned above, the applicant proposed in the early days to use a non-contact transmission method to realize the power transmission between the motor and the crushing parts, so as to cut off the mechanical connection between the motor and the crushing parts and avoid the vibration and impact of the crushing parts from reacting to the motor. Specifically, it includes an upper coupling and a lower coupling. The upper and lower couplings can be set as permanent magnets at the same time, or one of the upper and lower couplings can be set as a permanent magnet and the other as a magnetic metal disk. However, such a non-contact transmission scheme still has many technical problems. According to Coulomb's law, the interaction force between the two magnets F = k×(m1×m2) / r 2 , where k is the Coulomb constant, m1 and m2 are the magnetic charges of the two magnets, and r is the distance between the two magnets. As can be seen from the above, to ensure the interaction force between the upper and lower couplings of the two permanent magnets without contact, the magnetic charges of the two permanent magnets can be increased, or the distance between the two magnets can be reduced. Since the interaction force is inversely proportional to the square of the distance between the two magnets, the interaction force between the two decreases rapidly as the distance increases.

[0051] As can be seen from the above, although the non-contact transmission solution can completely isolate the vibration transmission between the motor and the crushing tool, it was found in the application practice of the applicant's product that the non-contact transmission solution will have the following technical problems: the non-contact upper coupling and the lower coupling rely on the magnetic interaction force between the two to achieve power transmission, and the magnetic interaction force between the upper coupling and the lower coupling is limited by the distance between the two. When the distance between the two becomes larger, the interaction force between the two drops rapidly. In existing soymilk machines or wall-breaking machines, the machine base and the cup body are assembled from different accessories. Each accessory itself has production tolerances during the production process. During the assembly process, multiple accessories will superimpose the tolerances into a dimensional tolerance chain, resulting in a large tolerance range for the finished product. Taking the machine base as an example, the cup body is placed on the casing, and the power transmission between the machine base and the cup body is connected through the lower coupling and the upper coupling. The lower coupling is connected to the motor shaft, which is then mounted on the housing's fixed column via a motor bracket. A shock-absorbing pad is clamped between the motor bracket and the fixed column, and the motor bracket is then locked to the fixed column using screws. Therefore, from the top cup mating surface of the housing to the lower coupling and upper coupling, the tolerances of multiple accessories and multiple assembly structures are superimposed. When the top of the housing is used as the reference plane, the lower coupling has a large axial tolerance range. This tolerance range results in poor stability in the distance between the upper and lower disk assemblies. Furthermore, the cup's own dimensional chain tolerance is added, and the distance between the upper and lower disk assemblies varies significantly for different products. For permanent magnets with the same magnetic charge, the increase in position will cause the mutual force to decay rapidly, thereby affecting the normal operation of the upper disk and the crushing component.

[0052] Furthermore, when different cups are combined with different bases, there will be positional deviations between them. Furthermore, when different users remove or install the cup, the placement of the cup may vary. After long-term use, wear and tear on the product itself can further increase the dimensional error between the cup and base. These factors, combined, can lead to positional uncertainty between the upper and lower disk assemblies, which in turn affects the proper functioning of the upper disk and the crushing unit.

[0053] When the traditional upper and lower couplings of an existing food processor are directly replaced with upper and lower couplings with permanent magnets, the existing fixed structure usually fixes the distance between the upper and lower couplings. Therefore, the interaction force between the upper and lower couplings is generally increased by increasing the magnetic charge strength of the two permanent magnets. However, when the spatial structure limit of the existing food processor is reached, the interaction force can no longer be increased simply by increasing the magnetic charge strength of the permanent magnets. Therefore, how to reduce the distance between the upper and lower couplings becomes the main technical direction.

[0054] However, existing food processors, such as blenders, have multiple mounting components between the upper and lower couplings. The varying dimensional tolerances and dimensional chains of these components can cause variations in the distance between the upper and lower couplings. Similar to increasing magnetic charge, when the preset dimensions between the upper and lower couplings reach their limits, the product's inherent dimensional tolerances can significantly impact the interaction force between them. In particular, when the bottom of the cup is sealed and the upper coupling with a permanent magnet and the crushing element are removably mounted within the cup, the upper and lower couplings become increasingly uncontrollable, significantly impacting the reliability of the distance between them and causing the interaction force to be highly unstable. For example, when a user operates a food processor, it's not always possible to ensure the cup is positioned optimally on the base. Furthermore, wear and tear of the various components over extended use can affect the fit between the cup and base, and thus the distance between the upper and lower couplings.

[0055] Based on the above technical problems, the non-contact transmission technology using permanent magnets has not been fully applied in products. Although the applicant has further optimized the transmission methods of the existing contact upper coupling and lower coupling, for example, the applicant disclosed a low-noise wall breaker in Chinese invention patent CN202410217067.4, which absorbs the shaking of the cup body assembly and reduces vibration and noise by setting the cup body assembly relative to the motor. In addition, the applicant disclosed a food processing machine with stable transmission in Chinese utility model patent CN202320044237.4, which adds an elastic pad between the upper coupling and the lower coupling to reduce the crushing impact in the cup body from being transmitted to the lower coupling through the upper coupling. However, such a technical solution still has some shortcomings: on the one hand, such transmission still belongs to direct contact mechanical transmission. No matter how the shock-absorbing pad structure is set, the impact of crushing food in the cup body will be transmitted to the lower coupling through the upper coupling; on the other hand, whether the cup body floats or the motor floats, or the two are set to float relative to each other, it is only to weaken the vibration between the two. Since the positions of the two are uncertain in the floating state, that is to say, during the working process, the upper coupling and the lower coupling constantly change their matching positions in the axial direction, which will increase the impact between the upper coupling and the lower coupling.

[0056] In the existing technology, whether it is non-contact magnetic transmission or contact mechanical transmission, the proposed solution is to adopt a "floating" matching structure, using the floating space to alleviate the impact generated by the absorption component. In other words, the existing technology provides easy-to-think solutions on how to use the floating space and the relative position changes during operation to solve the vibration transmission between the upper coupling and the lower coupling. However, from the above analysis, it can be seen that the floating setting method cannot truly improve the vibration and noise of the product. At the same time, the floating setting method will also cause the distance between the upper and lower disk assemblies to change, thereby affecting the interaction force between the upper and lower disk assemblies.

[0057] Based on this, the applicant, building on a non-contact transmission solution, breaks away from the conventional conventional solution of simple floating installation and adopts a variable position arrangement. The upper disk is removably placed at the bottom of the cup body, ensuring the distance between the upper disk and the cup bottom is minimized, while the lower disk assembly is configured to have a first position and a second position. The first position is the natural position of the lower disk assembly when mounted on the machine base, i.e., the position of the lower disk assembly when not affected by external factors such as the upper disk, under the influence of its own weight and the weight of the motor connected to the lower disk assembly. In the first position, the lower disk assembly, influenced by the design dimensions and assembly dimensional chain, abuts against or is arranged to overlap with the cup bottom, so that when the cup body is mounted on the machine base, the cup bottom directly contacts or presses the lower disk assembly, and the cup bottom presses the lower disk assembly, causing it to reach the second position. Because the preset installation dimensions of the lower disk assembly coincide with the cup bottom, the lower disk assembly tends to reset upward, allowing it to abut the cup bottom, ensuring that the distance between the lower disk assembly and the cup bottom, and particularly between the lower disk assembly and the upper disk, is at a preset minimum. Furthermore, when the cup body and the crushing device within the cup body are installed, the upper disk abuts the inner bottom of the cup body. The upper disk further absorbs the lower disk assembly, placing the lower disk assembly in a second position close to the cup bottom, fully ensuring that the distance between the upper and lower disk assemblies remains stable and reliable at the preset minimum. Because the lower disk assembly remains in the second position during operation, the torque applied to the upper disk, as would be the case with a "floating" setting, does not change. This ensures stable and reliable operation of the upper disk and prevents vibration and noise from the upper disk.

[0058] To address the technical problem of unstable and unreliable distances between the upper and lower magnetic disk assemblies in existing food processors employing non-contact transmission, which can be caused by factors such as product assembly tolerances, errors caused by user operating habits, errors caused by different cup and base combinations, and wear during normal use of the food processor, the present application provides a stable and reliable food processor. The food processor comprises a base, a cup, and a pulverizing device. The base houses a motor and a lower magnetic disk assembly driven by the motor. The cup is removably mounted to the base. The cup is provided with a pulverizing device removably mounted on the inner side of a cup bottom. Preferably, the cup bottom completely seals the bottom of the cup, eliminating the need for a through hole at the bottom of the cup to communicate with the outside, thereby improving the sealing effect of the cup. For example, the sidewalls of the cup may be integrally formed with the base, or the base may be a closed, integral structure fixedly connected to the sidewalls of the cup. The pulverizing device comprises a pulverizing element and an upper magnetic disk. The upper magnetic disk is attracted to the lower magnetic disk assembly and, driven by the lower magnetic disk assembly, drives the pulverizing element to perform pulverizing. Preferably, the food processor is usually also provided with a heating device. When the crushing device is placed, the crushing device realizes the crushing function, and the heating device can realize the boiling function; when the crushing device is not placed, only the heating device heats and boils the food in the cup body, for example, it is only used to boil water, etc.

[0059] The lower disk assembly has a first position and a second position. Because the lower disk assembly in the first position is pre-set at a height close to or aligned with the cup bottom, when the cup is mounted on the base, the cup directly presses the lower disk assembly to the second position. This action is completed as the cup is installed. That is, when the user manipulates the cup and installs it, the cup compresses the lower disk assembly, forcing it into the pre-set second position. During operation of the food processor, the lower disk assembly can remain in the second position. By directly utilizing the pre-set dimension of the first position to be greater than the maximum deviation of the lower disk assembly, including dimensional chain deviations caused by base assembly tolerances, cup assembly tolerances, cup-base fit errors, user operational errors, variations in cup assembly and errors, product wear errors, and so on, the pre-set minimum distance between the cup bottom and the lower disk assembly is maintained regardless of how the cup is installed or used.

[0060] While the above solution can solve the technical problem of the lower disk assembly's misalignment, the cup directly compresses the lower disk assembly to the second position, causing the lower disk assembly and the cup to be in direct contact. If the lower disk assembly and the cup bottom were in direct contact, friction would occur between the lower disk assembly and the cup bottom during high-speed rotation. This friction would significantly affect the proper fit between the lower disk assembly and the cup bottom. Therefore, the present application further provides a limiting structure, which is located between the lower disk assembly and the cup bottom to create a gap between them, and the limiting structure is located at the rotation center of the lower disk assembly. The limiting structure is clamped between the lower disk assembly and the cup bottom, ensuring that the lower disk assembly and the cup bottom are close enough but not in direct contact. While ensuring the magnetic interaction between the lower disk assembly and the upper disk, the limiting structure is used to withstand relative rotation between the lower disk assembly and the cup bottom, avoiding direct friction between the lower disk assembly and the cup bottom. The limiting structure located at the rotation center of the lower disk assembly has a relatively small linear velocity during high-speed rotation under the premise of a relatively small radius. Even if the limiting structure rotates relative to the lower disk assembly or the cup bottom, the limiting structure can withstand the relative friction between the two within a preset range, thereby ensuring that the lower disk assembly and the cup bottom are close in distance but friction-free.

[0061] Specifically, such as Figure 1-Figure 7As shown, the present application provides a stable and reliable food processing machine, which includes a machine base 100 and a cup body 110. The machine base 100 is provided with a motor 2 and a lower magnetic disk assembly 3 driven by the motor 2. The cup body 110 is detachably mounted on the machine base 100. Preferably, a support table is provided at the upper end of the machine base 100, and the cup body 110 is placed on the support table. The motor 2 is arranged in the machine base 100, and the lower magnetic disk assembly 3 extends out of the machine base 100 and is located on the support table. The cup body 110 is provided with a crushing device 4. The crushing device 4 is detachably mounted within the cup body 110 and is located on the inner side of the bottom of the cup body 110. The crushing device 4 includes a crushing element 45 and an upper magnetic disk 41. The upper magnetic disk 41 and the lower magnetic disk assembly 3 both include permanent magnets, so that the upper magnetic disk 41 and the lower magnetic disk assembly 3 attract each other and transmit power. When the lower magnetic disk assembly 3 is driven by the motor 2, the lower magnetic disk assembly 3 drives the upper magnetic disk 41 to be positioned and ultimately drives the crushing element 45 to cut and crush the food placed in the cup body or to stir the food in the cup body. Preferably, a positioning platform and a positioning slot that cooperate with each other are provided between the cup body and the machine base. When the cup body is mounted on the machine base, the positioning platform and the positioning slot cooperate with each other to ensure that the lower magnetic disk assembly and the crushing device remain concentric, and in particular, maintain the concentricity between the lower magnetic disk assembly and the upper magnetic disk, so that when the motor drives the lower magnetic disk assembly to rotate, the upper magnetic disk can be better driven.

[0062] The lower disk assembly 3 has a first position and a second position. When the pulverizing device 4 is not placed, the lower disk assembly 3 is in a normal installation position, that is, the natural position of the lower disk assembly 3 due to the support of the base 100 and the gravity of the lower disk assembly 3. When the cup body 110 and the pulverizing device 4 are placed, the cup body 110 first closely contacts the lower disk assembly 3 and further compresses the lower disk assembly 3, causing the lower disk assembly 3 to move downward and reach the second position closely contacting the outer bottom surface of the cup bottom of the cup body 110. Because the preset height of the lower disk assembly 3 in the first position is closely contacted with or overlaps with the cup body 110, the lower disk assembly 3 will be pressed to the second position when the cup body 110 is installed, regardless of whether the pulverizing device is rotating in the cup body 110.

[0063] The food processor also includes a retaining structure 5. Preferably, the retaining structure 5 is mounted at the rotational center of the lower magnetic disk assembly 3 and protrudes from the upper end surface of the lower magnetic disk assembly 3. Alternatively, the retaining structure 5 may be mounted on the bottom of the cup, corresponding to the rotational center of the lower magnetic disk assembly 3. Alternatively, the retaining structure 5 may comprise two parts, mounted on both the cup bottom and the lower magnetic disk assembly, and the combined parts may be positioned at the rotational center of the lower magnetic disk assembly 3. When the cup body 110 is mounted on the machine base 100, the retaining structure 5 initially abuts both the lower magnetic disk assembly 3 and the bottom of the cup body 110. For example, if the retaining structure 5 is mounted on the lower magnetic disk assembly 3, the cup body 110 initially abuts against the retaining structure 5 when the cup body 110 is mounted, thereby clamping the retaining structure 5 between the lower magnetic disk assembly 3 and the cup body 110. The height of the limiting structure 5 protruding from the upper end surface of the lower disk assembly 3 is used to limit the gap between the lower disk assembly 3 and the cup bottom, so that the lower disk assembly and the cup bottom can be kept close but not in contact.

[0064] As shown in the figure, the food processor comprises a base and a cup body. The base typically includes a housing, with a mounting platform on top of the housing for the cup body. The motor is mounted within the housing, with a mounting structure between the motor and the housing. The motor also includes a stator, a rotor, and a motor shaft. The lower disk assembly is mounted on the motor shaft. The lower disk assembly, along with the motor, typically passes through the housing and is located on the mounting platform, where it mates with the upper disk within the cup body. The various components of the base have inherent production tolerances, as do the corresponding mounting structures. From the housing's mounting platform to the lower disk assembly, there are multiple component and mating tolerances. The combined dimensional chain of these tolerances results in significant dimensional variations between the mounting platform and the lower disk assembly for different products. Furthermore, the cup body also comprises multiple components, including the cup body, a knife holder, and a cup base. When assembled with the knife holder, cup base, and other components, the cup body also experiences overlapping dimensional chains, resulting in significant dimensional variations between the upper disk and the cup base. In simple terms, the dimensions between the upper and lower magnetic disks include: the dimension from the upper magnetic disk to the cup bottom, the thickness of the cup bottom itself, and the dimension from the cup bottom to the lower magnetic disk. According to Coulomb's law, the interaction force between two magnets is inversely proportional to the square of the distance between them. Specifically for food processors, for example Figure 6As shown, even a change of more than 1mm in the distance between the upper and lower disk assemblies can have a significant impact, causing the magnetic attraction between the lower and upper disk assemblies to rapidly decrease. Therefore, further optimizing and reducing the distance between the upper and lower disk assemblies becomes a primary issue. Existing technologies typically rely on floating the upper disk, which can effectively reduce the distance between the upper and lower disk assemblies during operation and also address the issue of blade jamming by adjusting the gap using floating adjustments. However, existing technologies harbor a misconception that blade jamming, which prevents the agitator from completing the pulverization process, is due to insufficient interaction between the upper and lower disk assemblies. In this case, the more appropriate approach is to reduce the distance between the upper and lower disk assemblies to provide interaction, ensuring that the pulverizer has sufficient power to achieve pulverization. The purpose of floating the motor in existing technologies is simply to prevent vibration and impact from the pulverizer from being directly transmitted to the motor through the upper and lower couplings. Direct transmission through the upper and lower couplings eliminates the issue of interaction force attenuation. However, the floating setting can cause impact between the upper and lower couplings due to axial position changes.

[0065] In general, the floating setting is not suitable for magnetic non-contact power transmission. Therefore, the present application breaks this technical prejudice, sets the lower magnetic disk assembly to have a first position and a second position, and uses the limiting structure to limit the second position that the lower magnetic disk assembly can reach. First, the present application places the pulverizing device detachably on the inner side of the cup bottom of the cup body, and the pulverizing device is completely in contact with the cup bottom throughout the process, that is, the distance between the upper magnetic disk and the cup bottom is compressed to a minimum, and the upper magnetic disk is directly placed on the cup bottom, so it will not be affected by the dimensional chain error caused by the assembly of the cup body. The thickness of the cup body itself depends on the functional requirements of the product. For example, when the cup bottom is set to metal and has a heating function, the thickness of the cup bottom is the thickness of the metal bottom, and such a thickness is easier to control. As mentioned above, what can be further controlled is the size from the lower magnetic disk assembly to the outside of the cup bottom. The lower disk assembly is directly set to a preset height greater than any dimensional variations in the food processor. This accommodates dimensional variations caused by factors such as assembly tolerances of the cup body, the base, and the cup-to-base assembly, user errors in installing the cup body and base, and wear and tear from prolonged use. When the cup body is mounted on the base, regardless of the assembly method, the lower disk assembly maintains a close fit with the cup base, minimizing the distance between the upper and lower disk assemblies. This ensures that the interaction force between them meets the preset torque requirement, making the food processor's transmission more stable and reliable. Furthermore, because the lower disk assembly is compressed and brought to the second position upon cup installation and remains in this position throughout operation, it prevents floating during operation. This prevents insufficient interaction force between the upper and lower disk assemblies due to distance variations during operation, ensuring strong cutting and crushing power. Furthermore, a stopper structure prevents direct contact between the lower disk assembly and the cup base, preventing friction with the cup base during operation that could affect its proper function. In this way, the lower magnetic disk assembly in the second position can be stably and reliably located at the optimal traditional distance position during operation without being affected by the vibration of the food processor itself, different cup and base assemblies, user operations, etc., thereby achieving optimal coordination between the lower magnetic disk assembly and the upper magnetic disk, which is close but does not affect operation.

[0066] As a specific embodiment of the stable and reliable food processing machine described in the utility model, Figure 1-6As shown, the food processor includes a machine base 100 and a cup body 110, and the cup body 110 is placed on the machine base 100. A motor 2 and a lower magnetic disk assembly 3 are provided in the machine base 100, and the lower magnetic disk assembly 3 is provided at the upper end of the motor shaft 21 of the motor 2. A positioning platform and a positioning groove that cooperate with each other are provided between the machine base 100 and the cup body 110 to achieve stable cooperation between the machine base 100 and the cup body 110. At the same time, the positioning platform and the positioning groove can limit the concentricity between the lower magnetic disk assembly and the crushing device. Preferably, a positioning ring 120 is provided on the upper end face of the machine base 100, and the positioning ring 120 spatially surrounds the outer periphery of the lower magnetic disk assembly 3. A positioning groove 121 is provided at the bottom of the cup body 110, and a sink 113 is also provided at the bottom of the cup body 110. When the cup body 110 is mounted on the base 100, the positioning ring 120 is inserted into the positioning groove 121 to position the cup body 110. At the same time, the lower disk assembly 3 is inserted into the sink 113 so that the lower disk assembly 3 is close to the bottom of the cup body 110. By virtue of the cooperation between the positioning ring and the positioning groove, and the cooperation between the lower disk assembly and the sink, the lower disk assembly can be properly close to the cup body. Here, the axial height of the lower disk assembly can be higher than that of the positioning ring; or, the axial height of the lower disk assembly is the same as that of the positioning ring; furthermore, the axial height of the lower disk assembly is lower than that of the positioning ring, so that the positioning ring can properly protect the lower disk assembly.

[0067] The cup body 110 is equipped with a detachable crushing device 4 mounted on the inner side of the cup bottom. The cup body 110 includes a main body and a cup bottom 111. The cup bottom 111 is sealed to the main body, forming a container structure with a completely closed bottom. Compared with the existing technology, the cup bottom does not have a mechanical through hole, which eliminates the risk of water leakage. The closed cup structure also facilitates cleaning inside and outside the cup. The upper end of the lower disk assembly 3 is also provided with a limiting structure 5. The limiting structure 5 is mounted at the rotation center of the lower disk assembly 3 and is located between the lower disk assembly 3 and the cup bottom of the cup body 110.

[0068] Preferably, the lower disk assembly 3 includes a lower disk body 31, the lower disk body 31 having a limiting hole 311, and a limiting post 211 is provided at the upper end of the motor shaft 21. The limiting post 211 is inserted into the limiting hole 311. Furthermore, a locking screw 22 and a return spring 23 are provided at the top end of the limiting post 211. The locking screw 22 is fixed to the top end of the limiting post 211, allowing the lower disk body 31 to move between the locking screw 22 and the top end of the limiting post 211. The return spring 23 is clamped between the limiting post 211 and the lower disk body 31 and pushes the lower disk body 31 to fit tightly against the locking screw 22. When the lower disk assembly 3 is in the first position, the return spring 23 pushes the lower disk assembly 3 to its highest position. When the cup 110 is placed, the cup 110 compresses the lower disk assembly 3 through the limiting structure 5, causing the lower disk assembly 3 to move downward in the axial direction of the limiting post 211. When the cup 110 is installed in place, the lower disk assembly 3 is displaced to the bottom end that cooperates with the cup 110. It should be noted that since different cups may have different assembly errors, the second position does not refer to a specific position of a certain displacement size, but rather refers to the bottom end position that the lower disk assembly can reach when the cup is installed in place. When the cup 110 is removed, the return spring 23 pushes the lower disk assembly from the second position back to the first position. By utilizing the limiting holes and limiting columns, the lower disk assembly 3 can move axially while the motor shaft can drive the lower disk assembly to rotate, which facilitates the switching of the lower disk assembly 3 between the first position and the second position, and also makes the power transmission between the motor shaft and the lower disk assembly stable and reliable; a reset spring is further provided, and by utilizing the elastic force of the reset spring, when the crushing device is removed, the gravity of the lower disk assembly and the elastic force of the reset spring are superimposed, so that the lower disk assembly can be quickly reset to the first position.

[0069] An installation cavity 313 is provided on the top of the lower disk body 31, and a lower magnet 32 ​​made of a permanent magnet is provided in the installation cavity 313. The lower disk assembly 3 also includes a lower cover plate 33 that encloses the installation cavity 313. The lower disk body 31 and the lower cover plate 33 enclose the lower magnet 32 ​​inside to prevent the lower magnet 32 ​​from being corroded by external liquids, etc.

[0070] The rotation center of the lower disk assembly 3 is also provided with a mounting hole 312, and the limiting structure 5 includes a bearing 51 installed at the mounting hole 312. Preferably, the bearing 51 includes a first rotating part and a second rotating part, wherein the bearing 51 is fixed in the mounting hole 312 through the first rotating part, and when the cup body is installed, the second rotating part contacts the bottom of the cup.

[0071] Preferably, the bearing is a ball bearing, deep groove ball bearing, planar thrust bearing, or the like, typically comprising inner and outer rings or upper and lower portions that rotate relative to each other. In this embodiment, the first rotating portion is the outer ring 511 of the bearing 51, which is inserted into the mounting hole 312 and fixedly connected to the lower disk assembly 3. The second rotating portion is the inner ring 513 of the bearing 51, with balls 512 disposed between the outer and inner rings 511, 513. When the lower disk assembly 3 rotates, the outer ring 511 rotates with the lower disk assembly 3, while the inner ring 513 contacts and remains stationary with the cup bottom 111. The balls 512 are clamped between the outer and inner rings 511, 513, and rotate relative to each other, thereby achieving relative rotation between the lower disk assembly 3 and the cup bottom 111. Preferably, the second rotating portion further includes an abutment 52 disposed on the inner ring 513. The abutment 52 protrudes from the upper end surface of the lower disk assembly 3. When the lower disk assembly 3 is in the second position, the abutment 52 contacts the cup bottom 111. Preferably, the cup bottom 111 is made of stainless steel and is equipped with a heater. The bearing 51 is metal, and the abutment 52 is plastic. When the cup body is installed, the cup bottom 111 first contacts the plastic abutment 52 to avoid hard impact between the metal cup bottom and the bearing.

[0072] The mounting cavity 313 and the mounting hole 312 at least partially overlap in the lateral height of the lower disk assembly 3. As a result, the lower magnet 32 ​​disposed in the mounting cavity 313 surrounds the outer circumference of the bearing 51 mounted in the mounting hole 312. In the axial direction, when the lower disk assembly 3 is in the second position, the lower magnet 32 ​​is close to the cup bottom 111, and the distance between the lower magnet 32 ​​and the cup bottom 111 is controlled by the protruding height of the bearing 51. By encircling the lower magnet 32 ​​around the outer circumference of the bearing 51, the radius and circumference of the mounting cavity 313 are increased, allowing for the installation of more lower magnets. Furthermore, at the same height, the lower magnet 32 ​​exhibits a stronger magnetic flux, thereby enhancing the magnetic properties of the lower disk assembly 3.

[0073] The upper end of the abutment 52 protrudes from the upper end surface of the lower disk assembly 3, with a height difference D1 between the two. When the lower disk assembly 3 reaches the second position, the abutment 52 abuts against the outer surface of the cup bottom 111 of the cup body 110. When the lower disk assembly 3 is in operation, the abutment 52 and the cup bottom 111 are closely aligned, creating a gap L between the cup bottom 111 and the top of the lower disk assembly. Due to the pushing action of the abutment, the gap L can be set to be sufficiently small. Preferably, L is ≤ 2mm, meaning that the upper end surface of the lower disk assembly is close to but does not contact the outer surface of the cup bottom. This ensures a sufficiently close distance between the lower disk assembly and the upper disk while also preventing friction between the lower disk assembly and the cup bottom. The coordination between the bearing and the abutment ensures that the lower disk assembly will not vibrate or make noise even when rotating at high speeds. Furthermore, the bearing and abutment member are positioned at the rotational center of the lower magnetic disk assembly. The outer diameter of the abutment member need not be excessively large, thereby providing a push-pull effect and reducing the linear velocity of the abutment member's rotation, thereby making the food processor's transmission more stable and reliable. Preferably, the height difference D1 of the abutment member 52 protruding from the upper end surface of the lower magnetic disk assembly 3 is equal to the gap L between the cup bottom 111 and the upper end surface of the lower magnetic disk assembly 3. Of course, the height difference D1 can also be greater than the gap L. This is because the protruding portion of the abutment member 52 forms a gap between the lower magnetic disk assembly and the cup bottom. When the lower magnetic disk assembly abuts the cup bottom due to the magnetic attraction of the upper magnetic disk, the abutment member 52 may be squeezed and deformed appropriately, thereby making the height difference D1 greater than the gap L. When the abutment member 52 is made of a metal or rigid plastic that is not easily squeezed and deformed, the height difference D1 is equal to the gap L. Therefore, the gap L between the lower disk assembly and the cup bottom can be controlled by controlling the height difference D1 of the abutment member protruding from the lower disk assembly. Since the limit assembly is directly mounted on the upper end surface of the lower disk assembly, the mounting structure between the limit assembly and the lower disk assembly is simple, ensuring that D1 is within a controllable tolerance range. Furthermore, after the limit assembly is installed, it can be processed to ensure a higher precision of the height difference D1 between the limit assembly and the upper end surface of the lower disk assembly, thereby ensuring that the gap L is smaller within a controllable range.

[0074] like Figure 6 As shown, the relationship curve between the distance between the upper disk and the lower disk assembly and the corresponding magnetic attraction force is shown. Figure 6 It can be seen that when the distance between the upper and lower disk assemblies increases, the magnetic attraction between the upper and lower disk assemblies decreases rapidly, especially when the total distance between the upper and lower disk assemblies is less than 8 mm, the magnetic attraction between the upper and lower disk assemblies changes faster. It should be noted that Figure 6The distance between the upper disk and the lower disk assembly is the distance of direct contact when no other structures such as a cup body and a crushing device are provided (ie, Figure 6 The distance between the upper and lower magnetic disk assemblies along the central horizontal axis = the distance from the upper magnetic disk to the cup body + the thickness of the cup body itself + the gap L between the cup body and the lower magnetic disk assembly. In a food processor, since the lower magnetic disk assembly needs to be mounted on the motor and requires a fixed structure and a sealing structure to enclose the permanent magnet of the lower magnetic disk assembly, the crushing device needs to be placed inside the cup body to perform the crushing process. The upper magnetic disk and its permanent magnet also require a fixed structure and a sealing structure to prevent the upper magnet's permanent magnet from being directly exposed to the food in the cup body. There is also the thickness of the cup bottom itself between the upper and lower magnetic disk assemblies. Therefore, the actual distance between the upper and lower magnetic disk assemblies cannot start from zero. As previously mentioned, since the crushing device is placed directly inside the cup body, the distance between the upper magnetic disk and the cup bottom is fixed, and the thickness of the cup bottom itself is fixed. Therefore, the main factor affecting the distance between the magnetic disk assembly and the upper magnetic disk is the gap L between the cup bottom and the upper magnetic disk.

[0075] For the reasons stated above, it is preferred that the gap L be set to ≤ 2mm. Of course, due to the gap, the lower disk assembly and the cup base do not directly mate, meaning the gap L is necessarily greater than 0. Of course, the closer the gap between the lower disk assembly and the cup base approaches 0, the greater the magnetic interaction force between the lower disk assembly and the upper disk. As previously mentioned, the smaller the distance between the lower disk assembly and the cup base, the better. For example, the gap L can be set to 0.1mm, 0.2mm, 0.4mm, 0.5mm, etc. However, due to uncontrollable tolerances during product production, such as the flatness of the upper end surface of the lower disk assembly and the cup base itself, the gap L between the two cannot be infinitely close to 0. Therefore, while ensuring proper fit between the lower disk assembly and the cup body, the gap L between the lower disk assembly and the cup body is set to ≤ 2mm. If the gap between the lower disk assembly and the cup body is too large, it will significantly affect the magnetic attraction between the lower disk assembly and the upper disk, failing to fully meet the required pulverizing torque of the pulverizing device.

[0076] Preferably, the pulverizing device 4 includes an upper magnetic disk 41 and a pulverizing element 45. The upper magnetic disk 41 is connected to the pulverizing element 45. When the upper magnetic disk 41 is driven by the lower magnetic disk assembly 3, the pulverizing element 45 rotates to achieve cutting and pulverizing. The pulverizing device 4 also includes a fixed housing 43 and a blade shaft 44. The fixed housing 43 defines a fixed cavity 432. The upper magnetic disk 41 includes an upper magnet 42 disposed within the fixed cavity 432. The bottom of the fixed housing 43 also includes a housing bottom 431 that seals the fixed cavity 432. The blade shaft 44 passes through the fixed housing 43. The upper magnetic disk 41 and the pulverizing element 45 are respectively fixed to opposite ends of the blade shaft 44. The fixed housing 43 also includes an upper bearing 434 and a shaft seal 435. The blade shaft 44 passes through the upper bearing 434 and the shaft seal 435, allowing the upper magnetic disk 41, blade shaft 44, and pulverizing element 45 to rotate relative to the fixed housing 43. At the same time, the shaft seal 435 prevents liquid in the cup from flowing into the fixed cavity 432. A gap is provided between the upper magnetic disk 41 and the shell bottom 431. This arrangement prevents the upper magnetic disk 41 from contacting and rubbing against the shell bottom 431 during rotation. It also serves as a centering position at the bottom, preventing the crushing element from reacting on the upper magnetic disk when it is impacted and swung during operation, causing the upper magnetic disk to deflect, thereby ensuring stable and reliable operation of the upper magnetic disk. Furthermore, when the upper and lower magnetic disk assemblies are mutually attracted, a strong magnetic attraction is generated between them. For the lower magnetic disk assembly, the magnetic attraction is used to switch from the first position to the second position, and further, under the limiting action of the locking screw, abutment, etc., it remains in the optimal position for power transmission. The upper magnetic disk is also connected to the crushing element via the cutter shaft and passes through the upper bearing and shaft seal. When the upper magnetic disk is subjected to the magnetic attraction, the downward force is transmitted to the upper bearing and shaft seal. Over long periods of use, there is a risk of pulling the upper bearing downward, affecting the normal operation of the crushing device. A support structure can be provided to support the upper magnetic disk.

[0077] like Figure 4A 、 Figure 4B As shown, Figure 4A The figure shows that the pulverizing device 4 is not installed and the lower disk assembly 3 is in the first position. Figure 4B The cup (not shown) and the crushing device 4 are installed in place, pressing the lower disk assembly 3 to reach the second position. Figure 4A As shown, in the first position, the distance between the upper end surface of the lower disk assembly 3 and the top surface is D2; Figure 4BAs shown, in the second position, the lower disk assembly 3 is pressed downward by the cup body (not shown). The distance between the upper end surface of the lower disk assembly 3 and the top surface of the motor is D3. Preferably, D2 ≥ D3. The difference between D2 and D3, i.e., the upward displacement of the lower disk assembly, is also the error range of the food processing machine assembly dimensional tolerance chain that the lower disk assembly can absorb.

[0078] It should be noted that, while tolerances and assembly errors may exist among various components of a food processor, the food processor itself is relatively small. Therefore, when this error is ultimately fed back to the lower disk assembly, the tolerance displacement of the lower disk assembly typically does not exceed 2 mm. Consequently, the displacement between the first and second positions of the lower disk assembly typically does not exceed 2 mm. Of course, the lower disk assembly also has extreme assembly positions. When the cup body is fully installed, the lower disk assembly is already close to the outside of the cup bottom, resulting in no noticeable shift between the first and second positions. Consequently, distances D2 and D3 are identical.

[0079] Preferably, the outer side of the cup bottom 111 is provided with a recessed platform 112 recessed toward the interior of the cup body 110. When the cup bottom 111 is made of metal, the recessed platform 112 correspondingly forms a boss on the inner side of the cup bottom 111 that protrudes toward the interior of the cup body. The crushing device 4 is placed on the boss. Accordingly, when the lower disk assembly 3 is in the second position, the lower disk assembly 3 extends into the recessed platform 112. The recessed platform simultaneously limits the upper and lower disk assemblies, ensuring accurate and reliable alignment of the upper and lower disk assemblies, thereby ensuring stable and reliable power transmission between the upper and lower disk assemblies. Furthermore, the localized placement of the boss on the cup bottom further enhances the strength of the cup bottom at the boss, thereby improving the flatness of the cup bottom at the boss and preventing deformation that would affect the gap between the upper and lower disk assemblies.

[0080] Preferably, the bottom of the fixed shell 43 is provided with an inwardly contracted recess, which mates with a boss formed on the bottom of the cup base. The recess and boss form a limiter for the pulverizing device, allowing the upper magnetic disk within the pulverizing device to be better aligned with the lower magnetic disk assembly. Furthermore, the lower magnetic disk assembly 3 extends into the sink 112, and the boss formed within the sink extends into the recess of the fixed shell 43, abutting the corresponding upper magnetic disk within the fixed shell 43. This does not affect the distance between the lower magnetic disk assembly 3 and the upper magnetic disk, thus ensuring normal torque transmission between the lower magnetic disk assembly and the upper magnetic disk.

[0081] The food processor using the technical solution of the present application utilizes non-contact magnetic transmission, completely eliminating mechanical transmission between the pulverizing device and the motor. This prevents the vibration and impact of the pulverized components during operation from being transmitted to the motor, resulting in a more balanced and quieter operation, thus meeting the user's demand for low noise. Furthermore, by configuring the lower magnetic disk assembly to have a first position and a second position, the displacement difference between the first position and the second position is utilized to absorb dimensional errors caused by various factors, such as the assembly tolerance chain of the base and cup body of the food processor, operational errors during cup installation by the user, and wear errors during long-term use of the food processor. This allows the upper and lower magnetic disk assemblies to always maintain a preset minimum distance, ensuring that the interaction force between the upper and lower magnetic disk assemblies is within a preset range, thereby ensuring that the pulverized components can achieve stable and reliable cutting and pulverization. Furthermore, since the lower magnetic disk assembly in the first position is in close contact with or overlapped with the cup body, when the cup body is installed in place, the cup body presses the lower magnetic disk assembly, so that the lower magnetic disk assembly can always remain in the second position during operation, rather than "floating" as in the prior art. That is, the distance between the upper magnetic disk and the lower magnetic disk assembly does not change during operation and is always at a preset optimal distance, thereby ensuring stable and reliable power transmission of the food processor.

[0082] The lower disk assembly reaching the second position is limited by a limiting structure to prevent direct contact between the lower disk assembly and the cup bottom. The limiting structure is directly disposed between the lower disk assembly and the cup bottom. Preferably, the thickness of the limiting structure itself can be used to limit the gap between the lower disk assembly and the cup bottom, thereby ensuring the distance between the lower disk assembly and the upper disk. Since the limiting structure does not have excessive installation dimension chains, it can be further processed after installation, making it easier to control the gap between the lower disk assembly and the cup bottom. It can more reliably compress the distance between the lower disk assembly and the upper disk, ensuring stable and reliable transmission between the lower disk assembly and the upper disk.

[0083] It can be understood that the limiting structure is arranged on the lower disk assembly, and the limiting structure includes a shell arranged outside the lower disk assembly. The lower disk assembly can rotate in the shell, and the shell abuts against the bottom of the cup. The lower disk assembly rotates and drives the upper disk to work.

[0084] It is understandable that the motor shaft may not be provided with a limit column, and the lower disk body may not be provided with a limit hole accordingly, but only with a through hole, and a locking screw is used to directly lock the top end of the motor shaft, and the distance between the locking screw and the lower disk body is used to control the switching of the lower disk assembly between the first position and the second position.

[0085] It is understood that the lower disk assembly may not be provided with a return spring. A sealed space is defined between the lower disk assembly and the motor shaft, and gas is filled in the sealed space to propel the lower disk assembly to the first position. After the cup leaves the lower disk assembly, the lower disk assembly is reset under the propulsion of the compressed gas.

[0086] It is understandable that the base is provided with a magnet that magnetically repels the lower disk assembly. When the cup body is picked up, the lower disk assembly is pushed by the magnet and returns from the second position to the first position. Alternatively, the cup body is provided with a magnet that magnetically attracts the lower disk assembly. When the cup body is picked up, the magnet drives the lower disk assembly to return from the second position to the first position. Of course, a matching magnet assembly can also be provided between the base and the lower disk assembly, which is not the same as the magnet in the lower disk assembly used to drive the upper disk. The magnet used to push the lower disk assembly to reset can be a permanent magnet or an electromagnet.

[0087] It can be understood that the limiting structure only includes a bearing arranged in the mounting hole of the lower disk assembly, and the bearing includes an inner ring protruding from the upper end surface of the lower disk assembly. The outer ring of the bearing is fixedly connected to the lower disk body, and the inner ring is fitted with the outer side of the cup bottom, so that there is a gap between the lower disk assembly and the cup bottom.

[0088] As will be understood, the limiting structure includes a protrusion located at the rotational center of the upper end surface of the lower disk assembly. This protrusion extends upward, i.e., toward the cup bottom. When the lower disk assembly is in the second position, the protrusion abuts the outer side surface of the cup bottom, creating a gap between the upper end surface of the lower disk assembly and the cup bottom. When the lower disk assembly is in operation, the protrusion rotates with the lower disk assembly relative to the cup bottom. Because the protrusion is located at the rotational center of the lower disk assembly, it generally does not need to be excessively large. Therefore, the protrusion's rotational linear velocity is low, preventing excessive friction, thereby ensuring that power transmission is achieved while maintaining the gap between the lower disk assembly and the cup bottom.

[0089] It can be understood that the limiting structure includes a downward protrusion formed at the bottom of the cup corresponding to the rotation center of the lower disk assembly. When the lower disk assembly is in the second position, the protrusion abuts against the top surface of the lower disk assembly, and the lower disk assembly rotates relative to the protrusion and drives the upper disk.

[0090] It can be understood that the positioning platform includes a plurality of positioning posts arranged on the top of the machine base, and the centers of the plurality of positioning posts are concentric with the rotation center of the lower disk assembly; the bottom of the cup body is provided with an annular positioning groove that cooperates with the positioning posts, and the plurality of positioning posts are inserted into the annular positioning groove and limit the concentricity of the lower disk assembly and the crushing device; or, the bottom of the cup body is provided with a plurality of positioning grooves that cooperate with the plurality of positioning posts, and the plurality of positioning posts and the plurality of positioning grooves are plugged into and matched with each other to limit the concentricity between the lower disk assembly and the crushing device.

[0091] It can be understood that the positioning ring can be provided on the cup body, and the corresponding positioning groove is provided on the machine base.

[0092] It is understood that the limiting structure comprises only a bearing located on the cup bottom, corresponding to the rotational center of the lower disk assembly. The fixed portion of the bearing is connected to the cup bottom, and the rotating portion of the bearing is convex downward and abuts the lower disk assembly in the second position. The lower disk assembly rotates and drives the upper disk.

[0093] As another preferred embodiment of the present application, Figure 7 As shown, the lower disk assembly is fixedly connected to the motor, and the motor is movably mounted on the base. When the cup body is installed, the cup body presses the lower disk assembly, and further presses the motor through the lower disk assembly, so that the motor and the lower disk assembly are switched from the first position to the second position together to realize the driving of the upper disk.

[0094] Specifically, such as Figure 7 As shown, the base 100 includes an upper housing 101 and a lower housing 102. The motor 2 includes a motor mounting bracket 24. The upper and lower housings 101 and 102 utilize interlocking fixing posts and positioning holes to clamp the motor mounting bracket 24, thereby securing the motor 2 within the base 100. Preferably, the upper and lower housings 101 and 102 are secured by motor screws, and the motor 2 has axial movement space. The motor and the lower disk assembly are together in a first position with sufficient height. When the cup is placed, the cup compresses the lower disk assembly and the motor, causing them to move downward together. When the cup is in place, the lower disk assembly and the motor reach a second position together. In this way, regardless of the dimensional tolerances of the food processing machine or how the cup is installed, the optimal transmission distance between the lower disk assembly and the upper disk can be maintained.

[0095] It is understandable that the motor can be directly mounted on the upper housing by screws or the like, and there is a movable space between the motor and the upper housing so that the motor and the lower disk assembly can be switched from the first position to the second position together.

[0096] It can be understood that the motor can be supported by the lower housing and have a movable space between the motor and the lower housing, so that the motor and the lower disk assembly can be switched from the first position to the second position together.

[0097] 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 based on 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 stable and reliable food processing machine, characterized in that: The food processing machine comprises: a machine base provided with a motor and a lower magnetic disk assembly driven by the motor; The cup body is detachably mounted on the machine base, and a crushing device is provided inside the cup body and mounted on the inner side of the cup bottom; A crushing device includes a crushing piece and an upper magnetic disk attracted to the lower magnetic disk assembly and driven by the lower magnetic disk assembly to drive the crushing piece to work; A limiting structure is provided between the lower magnetic disk assembly and the cup bottom, wherein the limiting structure is located at the rotation center of the lower magnetic disk assembly; The lower disk assembly includes a disk body and a permanent magnet arranged on the disk body. The lower disk assembly has a first position and a second position in which the lower disk assembly is pressed downward by the cup body and close to the outside of the cup bottom after being placed on the cup body. The limiting structure allows a gap to be formed between the lower disk assembly and the cup bottom.

2. The stable and reliable food processing machine according to claim 1, characterized in that: The lower disk assembly is provided with a limiting hole sleeved on the motor shaft. The lower disk assembly can move along the axial direction of the motor shaft and the limiting hole to switch between a first position and a second position.

3. The stable and reliable food processing machine according to claim 1, characterized in that: The lower disk assembly is fixedly connected to the motor, and the motor is movably mounted on the base. The motor and the lower disk assembly are switched from the first position to the second position under the pressure of the cup body.

4. The stable and reliable food processing machine according to claim 2 or 3, characterized in that: The base is further provided with an elastic member for pushing the lower disk assembly to switch from the second position to the first position.

5. The stable and reliable food processing machine according to claim 1, characterized in that: The limiting structure includes a bearing, and the bearing includes a first rotating part and a second rotating part that rotate relative to each other. The first rotating part and the second rotating part are in contact with the lower disk assembly and the cup bottom respectively, so that the lower disk assembly and the cup bottom rotate relative to each other through the bearing.

6. The stable and reliable food processing machine according to claim 5, characterized in that: The rotation center of the lower disk assembly is provided with a mounting hole for accommodating the bearing, the first rotating part is fixedly connected to the lower disk assembly, the second rotating part protrudes from the upper end surface of the lower disk assembly, and the second rotating part in the second position contacts the cup bottom.

7. The stable and reliable food processing machine according to claim 6, characterized in that: The permanent magnets of the lower disk assembly surround the outer periphery of the bearing.

8. The stable and reliable food processing machine according to claim 6, characterized in that: The second rotating portion further includes an abutment member, and the abutment member protrudes from the upper end surface of the lower magnetic disk assembly.

9. The stable and reliable food processing machine according to claim 1, characterized in that: The crushing device is detachable and arranged on the inner side of the cup bottom of the cup body.

10. The stable and reliable food processing machine according to claim 1, characterized in that: The limiting structure includes a protrusion extending downward from the cup bottom, the protrusion being in contact with the lower disk assembly and rotating relative to the lower disk assembly; Alternatively, the limiting structure includes a protrusion extending upward from the upper magnetic disk, and the protrusion is in contact with the cup bottom and rotates relative to the cup bottom.

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