Food processor reliable in transmission

Abstract

The utility model discloses a food processor reliable in transmission, and the food processor comprises a machine base which is provided with a motor and a lower magnetic disk assembly driven by the motor; the cup body is detachably installed on the machine base, and a smashing device installed 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 disc which is attracted with the lower magnetic disc assembly and is driven by the lower magnetic disc assembly to drive the crushing part to work; the lower magnetic disk assembly is provided with a first position where the smashing device is not placed and a second position where the lower magnetic disk assembly is sucked upwards from the first position to move towards the outer side of the cup bottom and is close to the outer side of the cup bottom after the smashing device is placed. 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] This application relates to the field of food processing, and particularly to a food processor having a base and a cup body, and adopting magnetic non-contact transmission for processing. Background Art

[0002] Existing wall breakers or cooking machines generally include a base and a cup body detachably mounted on the base. A motor is provided in the base, and a crushing member for crushing food materials is provided in the cup body. The motor rotates to drive the crushing member to rotate and work, so as to realize the cutting and crushing of food materials. Since the motor and the crushing member are in a high-speed rotating state during the operation of the wall breaker, the impact generated by the collision between the crushing member and the food materials will act on the motor through the connecting components, resulting in increased vibration and noise during the operation of the wall breaker, and poor user experience. Therefore, how to reduce the reaction force of the crushing member on the motor, and even cut off the mechanical transmission between the two, has become the primary problem to solve vibration and noise.

[0003] Based on this, the applicant proposes a non-contact transmission scheme. For example, Chinese Utility Model Patent CN201020015043.4 discloses a soymilk machine with non-contact transmission, in which a magnetic non-contact upper coupling and a lower coupling are provided between the motor and the crushing cutter, including an up-and-down transmission method and an inner-and-outer transmission method. Since the couplings do not directly contact each other, the noise and vibration during operation are significantly reduced. On this basis, the applicant further proposes an improved non-contact transmission scheme. For example, Chinese Invention Patent CN201120194553.7 discloses an indirectly-driven food processor, including a driving coupling provided on the power output shaft of the motor and a driven coupling connected to the crushing cutter. The driven coupling is provided with a certain floating space in the axial direction, and the crushing cutter can produce appropriate sliding in the axial direction to disengage from the stuck materials, so that the crushing cutter can work normally. However, the distance between the upper and lower couplings of this magnetic transmission method is not fixed and is also affected by product assembly, resulting in insufficient transmission power between the upper and lower couplings to support the food processor to complete efficient crushing. This scheme can set the cup body into a completely closed structure without mechanical connection holes at the bottom to better solve the liquid leakage problem of the mixing cup.

[0004] In the prior art, a solution for contact transmission using magnetism is also disclosed. For example, Chinese Utility Model Patent CN202222307890.3 discloses a food processor, which includes a machine head and a stirring knife assembly. The machine head includes a motor and a magnetic driving member connected to the motor, and the stirring knife assembly includes a magnetic transmission member. The magnetic driving member is an electromagnet. After the magnetic driving member is powered on, it becomes magnetic and magnetically attracts the magnetic transmission member, and the motor drives the stirring knife to rotate in the mixing cup; after the magnetic driving member is powered off, it demagnetizes and separates from the magnetic transmission member, and the magnetic transmission member resets under the elastic force of the elastic reset member. That is to say, this solution is a transmission solution using magnetic attraction, and there is still contact between the magnetic driving member and the magnetic transmission member. Therefore, the impact received by the stirring knife assembly will still be transmitted to the motor and the machine head through the magnetic transmission member and the magnetic driving member, which is not a completely mechanically isolated "non-contact" transmission solution; secondly, the magnetic driving member and the magnetic transmission member directly attract each other, so it is required that the two rotate synchronously during operation. If there is a speed difference between the two, there will be relative friction between the magnetic driving member and the magnetic transmission member, which will affect the normal operation of the two; furthermore, since the magnetic driving member and the magnetic transmission member need to directly attract each other, and the magnetic transmission member needs to further drive the stirring knife located in the mixing cup assembly to rotate, the mixing cup assembly must be provided with a transmission structure passing through the mixing cup assembly. For example, a transmission shaft needs to be provided to pass through the cup body or the cup lid. That is, the mixing cup assembly cannot be set as a truly completely mechanically through-hole-free solution.

[0005] A variety of solutions in the prior art have not completely solved the demand for stable power transmission in magnetic transmission, that is, to achieve stable power transmission between the driving coupling and the driven coupling without contact. The floating setting method of the crushing knife cannot stably and reliably control the distance between the driving coupling and the driven coupling, which greatly affects the normal operation of the food processor. Summary of the Invention

[0006] The purpose of the present utility model is to provide a food processor with reliable transmission to solve the technical problems existing in the food processor with a detachable cup body relative to the machine base in the prior art, such as large changes in the distance between the lower disk assembly and the cup bottom caused by assembly errors and product use errors, resulting in unstable power transmission between the lower disk assembly and the upper disk, and the direct-attraction magnetic drive structure having mutual friction, thus easily causing insufficient power transmission.

[0007] To solve the above technical problems, the present application provides a food processor with reliable transmission. The food processor includes a base provided with a motor and a lower disk assembly driven by the motor; a cup body detachably mounted on the base, and a crushing device is provided inside the cup body and mounted on the inner side of the cup bottom; the crushing device includes a crushing member and an upper disk that is attracted to the lower disk assembly and drives the crushing member to work under the drive of the lower disk assembly; the lower disk assembly includes a disk body and a permanent magnet provided on the disk body. The lower disk assembly has a first position where the crushing device is not placed, and a second position where after placing the crushing device, it moves upward and close to the outer side of the cup bottom from the first position and has a gap with the outer side of the cup body.

[0008] Preferably, the food processor further includes a limiting structure provided between the lower disk assembly and the cup bottom. The limiting structure is located at the rotation center of the lower disk assembly and has a gap between the lower disk assembly and the cup bottom.

[0009] Preferably, the limiting structure includes a bearing provided on the lower disk assembly. The bearing protrudes from the upper end surface of the lower disk assembly and includes a first rotating part and a second rotating part that rotate relative to each other. The first mounting part is fixedly connected to the lower disk assembly, and the second rotating part protrudes from the upper end surface of the lower disk assembly. The second rotating part in the second position contacts the cup bottom.

[0010] Preferably, an installation hole for accommodating the bearing of the limiting structure is provided at the rotation center of the lower disk assembly. The limiting structure includes a limiting member provided in the installation hole. The limiting member protrudes from the upper end surface of the lower disk assembly. The limiting member rotates relative to the lower disk assembly, and the permanent magnet of the lower disk assembly is located on the outer periphery of the installation hole.

[0011] Preferably, the base further includes a limiting device that axially limits the lower disk assembly so that the lower disk assembly has a moving gap axially.

[0012] Preferably, the lower disk assembly is provided with a limiting hole and a fixing member sleeved on the motor shaft. The limiting device includes a limiting hole and a fixing member provided on the lower disk assembly and sleeved on the motor shaft. The lower disk assembly can move axially along the motor shaft and the limiting hole to form the moving gap.

[0013] Preferably, the lower disk assembly is fixedly connected to the motor, and the limiting device is provided on the base so that the lower disk assembly and the motor can move axially relative to the base to form the moving gap.

[0014] Preferably, the machine base is further provided with an elastic member for pushing the lower disk assembly to axially displace and reset in the moving gap.

[0015] Preferably, a fixing platform for mounting the cup body is provided at the top of the machine base. The fixing platform surrounds the periphery of the lower disk assembly. A receiving cavity for receiving the lower disk assembly is provided at the bottom of the cup body. The lower disk assembly extends into the receiving cavity and switches from a first position to a second position.

[0016] Preferably, a sunken platform that is recessed towards the inside of the cup body is provided on the outer side of the cup bottom. The lower disk assembly in the second position extends into the sunken platform.

[0017] Preferably, the magnetic poles of the upper disk and the lower disk assembly are arranged axially, and the upper end surface of the lower disk assembly and the cup bottom are parallel planes.

[0018] Compared with the prior art, the present application has at least the following technical effects:

[0019] 1. This application continues the applicant's technical direction in non-contact transmission. The power transmission between the motor and the crushing device is achieved by using an upper magnetic disk and a lower magnetic disk assembly that magnetically attract each other, fundamentally avoiding the transmission of vibrations and noises during the working process from the crushing part to the motor. The crushing device is detachably arranged at the bottom of the cup, so that the crushing device fully fits the bottom of the cup, avoiding the distance fluctuation between the upper magnetic disk and the bottom of the cup when the crushing device is floatingly arranged inside the cup in the prior art, and finally ensuring the stable and reliable distance between the upper magnetic disk and the lower magnetic disk; further, the lower magnetic disk assembly is provided with a first position and a second position, and the upper magnetic disk adsorbs the lower magnetic disk assembly from the first position upward to the second position close to the bottom of the cup; thus, the distance between the upper magnetic disk and the lower magnetic disk assembly is only related to the distance from the upper magnetic disk to the bottom of the cup, the distance from the lower magnetic disk assembly to the bottom of the cup, and the thickness of the bottom of the cup itself, and is disengaged from the assembly relationship of the food processor, realizing that the distance between the lower magnetic disk assembly and the upper magnetic disk is always at a stable and reliable minimum value, and also realizing the stable and reliable transmission of power between the lower magnetic disk assembly and the upper magnetic disk without contact. Among them, the lower magnetic disk assembly is provided with a first position and a second position. Usually, the first position is axially lower than the second position. Herein, the first position refers to the natural state of the lower magnetic disk assembly when it is installed on the machine base, and no upper magnetic disk is placed and no other external force acts on the lower magnetic disk assembly; correspondingly, the second position refers to: after the cup body and the crushing device located inside the cup are installed on the machine base, the upper magnetic disk of the crushing device adsorbs the lower magnetic disk assembly, causing the lower magnetic disk assembly to move upward to a position close to the bottom of the cup. The lower magnetic disk assembly includes a disk body and a permanent magnet arranged on the disk body. Preferably, the permanent magnet is located at the upper end of the disk body. The disk body is used to fix the permanent magnet, ensuring that the permanent magnet can better achieve the purpose of magnetic drive and having better structural strength; at the same time, a plurality of permanent magnets can be provided, and the magnetic force between the upper magnetic disk and the lower magnetic disk can be enhanced by means of magnetic arrangement and combination; furthermore, the disk body can be provided with a closed installation cavity to accommodate the permanent magnet, avoiding the erosion of the permanent magnet by dust and liquid when it is directly exposed, and ensuring that the lower magnetic disk assembly can be in a stable output state for a longer time.

[0020] Since the lower disk assembly is adsorbed by the upper disk to reach the second position from the first position, and when the lower disk assembly reaches the second position, it only approaches the bottom of the cup, that is, there is still a gap between the lower disk assembly at the second position and the bottom of the cup. Therefore, the distance between the lower disk assembly at the first position and the bottom of the cup will be "greater" than that at the second position. Such a distance ensures that the lower disk assembly at the first position will never directly contact the cup body. For example, when the crushing device is detachably arranged in the cup body, when only the cup body is installed without installing the crushing device, due to the absence of the adsorption effect of the upper disk, the lower disk assembly always remains in the first position and always has a large distance from the cup body to prevent the lower disk assembly from affecting the cup body. A displacement is set between the first position and the second position, and this displacement is greater than the superposition of the assembly tolerance zone of the product, use deviation, etc. Thus, by using the displacement between the first position and the second position, 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 usage habits, and the deviation caused by product wear are absorbed, enabling the lower disk assembly to directly abut and be associated with the bottom of the cup without being affected by other accessories and operations, greatly ensuring that the distance between the upper disk and the lower disk assembly is in a stable and reliable minimum state. That is to say, for different bases, cup bodies, and the combined food processors, the switching of the lower disk assembly between the first position and the second position can be used to ensure the minimum distance between the lower disk assembly and the upper disk. It should be noted that since the second position depends on the installation of the cup body and the crushing device and, under the adsorption effect of the upper disk, the lower disk assembly moves upward and approaches the bottom of the cup, due to the assembly deviation between the cup body and the base itself and the relative position of the cup body and the base not being fixed, the second position of the lower disk assembly does not refer to a fixed specific position but refers to the position where the lower disk assembly moves upward and approaches the bottom of the cup after the cup body and the crushing device are installed.

[0021] 2. Although various assembly errors of the food processor can be absorbed by setting the lower disk assembly to be sucked from the first position to the second position close to the bottom of the cup, different operating methods of different users during use will cause the distance between the cup body and the lower disk to be in a large change state. In the extreme state, the lower disk assembly will directly contact the bottom of the cup, which will cause mutual friction between the lower disk assembly and the bottom of the cup during operation, affecting the normal operation of the food processor. In order to avoid direct contact between the lower disk assembly and the cup body while keeping the distance between the lower disk assembly and the bottom of the cup controllable and minimized, a limiting structure is further provided. The main purpose of setting the limiting structure is to have a safe gap between the lower disk assembly and the bottom of the cup that can ensure the rotation between the lower disk assembly and the bottom of the cup, so as to ensure that the lower disk assembly can stably and reliably rotate close to the bottom of the cup and drive the upper disk to work, and will not directly contact and generate friction with the cup body. The limiting structure is clamped between the lower disk assembly and the bottom of the cup, and the limiting structure is used to undertake the function of relative rotation, that is, it can effectively control the distance between the lower disk assembly and the upper disk, and avoid the relative friction caused by the large-area contact between the lower disk assembly and the bottom of the cup, so that the lower disk assembly can stably and reliably rotate relative to the bottom of the cup. Since the purpose of the limiting structure is to ensure a stable and reliable gap between the lower disk assembly and the bottom of the cup, when the lower disk assembly is in the first position and only the cup body is installed without installing the crushing device, due to the lack of magnetic suction of the upper disk, the lower disk assembly will not move up, and there is a relatively large distance between the lower disk assembly and the bottom of the cup. At this time, there is no need for the limiting structure to ensure the distance between the lower disk assembly and the bottom of the cup. Therefore, when the lower disk assembly is in the first position, the limiting structure does not have to contact the lower disk assembly and the bottom of the cup at the same time. At this time, the limiting structure can be set on the lower disk assembly without contacting the bottom of the cup, or the limiting structure can be set on the bottom of the cup without contacting the lower disk assembly. The limiting structure can also be set in two parts, respectively set on the lower disk assembly and the bottom of the cup. At this time, although the limiting structure is set on the lower disk assembly and the bottom of the cup at the same time, the two parts of the limiting structure will be separated from each other and do not need to achieve contact for power transmission. Therefore, at this time, it still belongs to the category of not contacting the lower disk assembly and the bottom of the cup at the same time. After the cup body is installed on the machine base and the crushing device is installed in place, the upper disk sucks the lower disk assembly upward to the second position. It should be noted that the upward movement of the lower disk assembly from the first position to the second position is adsorbed by the magnetic suction of the upper disk. Therefore, when only the cup body is installed on the machine base, the lower disk assembly does not necessarily switch to the second position. At this time, the function of crushing does not need to be realized in the cup body, and the lower disk assembly does not need to be close for power transmission.When the lower disk assembly is in the second position, the limiting structure contacts both the lower disk assembly and the bottom of the cup simultaneously, and the limiting structure is clamped between the lower disk assembly and the bottom of the cup, so that there is a gap between the lower disk assembly and the bottom of the cup.

[0022] By using the limiting structure, a gap is provided between the lower disk assembly and the bottom of the cup on the premise of ensuring the optimal distance, without the lower disk assembly rubbing against the bottom of the cup when the lower disk assembly rotates due to direct contact between the lower disk assembly and the bottom of the cup. The limiting structure is directly provided on the lower disk assembly or the bottom of the cup. Whether it is between the limiting structure and the lower disk assembly or between the limiting structure and the bottom of the cup, the two are directly assembled, which can well ensure the assembly tolerance between the limiting structure and the lower disk assembly or the bottom of the cup. Moreover, further processing can be carried out after the assembly of the limiting structure and the lower disk assembly or the bottom of the cup to make the assembly accuracy higher. With such a setting, when the cup body and the crushing device are installed on the machine base, no matter how the cup body is installed, the upper disk can adsorb the lower disk assembly to the second position. The limiting structure further ensures that there is still a gap between the lower disk assembly and the bottom of the cup while the lower disk assembly is extremely close to the bottom of the cup. The ultimate goal is to make the distance between the upper disk and the lower disk assembly reach the controllable minimum distance, thereby maximizing the magnetic interaction force between the lower disk assembly and the upper disk, and enabling the torque of the motor to be transmitted to the upper disk to the greatest extent, ensuring that the upper disk and the crushing part have sufficient torque to achieve crushing and cutting. That is, it solves the vibration and noise transmission when there is direct mechanical contact between the motor and the crushing part, and also ensures the power transmission between the motor and the crushing part, thereby providing a food processor for users with low noise and stable and reliable power transmission.

[0023] 3. By using the bearing to bear the relative rotation between the lower disk assembly and the cup bottom, stable and reliable power transmission is achieved on the premise that the distance between the lower disk assembly and the cup bottom is controllable and minimized. Further, the bearing includes a first rotating part and a second rotating part. The first rotating part is fixedly connected to the lower disk assembly, and the second rotating part 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 is used to define the gap between the upper end surface of the lower disk assembly and the cup bottom. Thus, when the lower disk assembly is in the second position, the second rotating part of the bearing directly abuts against the cup bottom, so that there is a gap between the upper end surface of the lower disk assembly and the cup bottom. When the lower disk assembly rotates, there will be no direct friction between the lower disk assembly and the cup bottom. The bearing is directly installed on the lower disk assembly, and there is only a first-level installation structural relationship between the two, which is conducive to controlling the mating dimensions of the lower disk assembly and the bearing, and thus can reliably control the height of the bearing protruding from the upper end surface of the lower disk assembly, and finally control the gap between the lower disk assembly and the cup bottom, so that the distance between the lower disk assembly and the upper disk is in a stable, reliable and small state.

[0024] 4. An installation hole is provided at the rotation center of the lower disk assembly, the bearing is arranged in the installation hole, and then the permanent magnet of the lower disk assembly is arranged around the outer periphery of the bearing. The permanent magnet can be directly close to the cup bottom without directly contacting the cup bottom, and finally the distance between the lower disk assembly, the permanent magnet and the permanent magnet of the upper disk is small enough and stable and reliable under the control of the bearing. Setting the bearing at the rotation center of the lower disk assembly does not require a too large diameter. When the lower disk assembly rotates at a high speed, the linear velocity of the bearing itself is relatively not too large, ensuring that the bearing can withstand higher rotational speed requirements. The permanent magnet surrounding the outer periphery of the bearing has a larger diameter and circumference, and can have a larger volume under the same thickness condition, that is, it can increase the magnetic flux of the permanent magnet, enhance the magnetic force between the lower disk assembly and the upper disk, and achieve stronger torque transmission. Moreover, the magnetic poles of the permanent magnets of the upper disk and the lower disk assembly are arranged oppositely to ensure the strongest magnetic force between the two. At this time, the permanent magnet surrounds the outer periphery of the bearing, avoiding the large magnetic suction force exerted on the bearing when the magnetic poles of the permanent magnet are directly opposite to the bearing, which affects the stable and reliable operation of the bearing itself.

[0025] 5. Generally speaking, standard parts are selected for the bearings to reduce costs. However, the setting structures of the first rotating part and the second rotating part of the bearings of the standard parts, as well as the protruding height of the second rotating part relative to the upper end face of the lower disk assembly, do not necessarily fully meet the specific requirements of the food processor. Preferably, an abutting member is provided on the second rotating part. When the lower disk assembly is in the second position, the abutting member is used to contact the bottom of the cup. In this way, the distance between the lower disk assembly and the bottom of the cup can be controlled by the abutting member. In particular, after the bearing is assembled on the lower disk assembly, the height of the abutting member protruding from the lower disk assembly can be more precisely controlled by processing the abutting member, thereby precisely controlling the distance between the lower disk assembly and the bottom of the cup. During the process of the lower disk assembly switching from the first position to the second position, it is instantaneously realized by the installation of the upper disk. Due to the high relative speed, there will be an impact between the lower disk assembly and the bottom of the cup. For example, when both the bearing and the bottom of the cup are made of metal, the hard impact brings a large vibration and also causes deformation of the lower disk assembly or the bottom of the cup during long-term use. Preferably, the abutting member is made of plastic material to play a certain buffering role and avoid direct hard impact. In addition, although the relative rotation between the lower disk assembly and the bottom of the cup is borne by the bearing, avoiding the friction between the lower disk assembly and the bottom of the cup, and there is no relative rotation during the contact process between the abutting member and the bottom of the cup, since the abutting member bears the magnetic suction force between the lower disk assembly and the upper disk for a long time during the working process, there may be wear during the service life cycle of the food processor. At this time, the abutting member can be directly replaced to avoid replacing other accessories with higher costs, realizing low-cost life cycle maintenance.

[0026] 6. As mentioned above, the lower disk assembly is provided with a first position and a second position to optimize and adjust the distance between the lower disk assembly and the upper disk, ensuring that the distance between the lower disk assembly and the upper disk is minimized and controllable. At the same time, it is also necessary to avoid direct contact and friction between the lower disk assembly and the cup body when the lower disk assembly switches from the first position to the second position. By providing a limiting device on the machine base, the limiting device can axially limit the lower disk assembly, enabling the lower disk assembly to have a moving gap axially. In this way, when the cup body is installed on the machine base, the lower disk assembly moves from the first position to the second position, and the limiting device can prevent excessive displacement of the lower disk assembly. The moving gap is used to control the displacement amount of the lower disk assembly from the first position to the second position. Furthermore, on the premise of ensuring that the lower disk assembly is close to the upper disk, it is also possible to avoid direct contact between the lower disk assembly and the cup body to ensure the stable and reliable operation of the lower disk assembly during the working process.

[0027] 7. Limit holes and fixing parts are provided on the lower disk assembly, and the limit holes and the fixing parts are used to form the limiting device, so that the lower disk assembly can be conveniently and directly installed on the motor shaft. At the same time, the lower disk assembly can be provided with a moving gap in a planned manner, so that the lower disk assembly can be switched between a first position and a second position. After the crushing device is installed, the lower disk assembly can be switched from the first position to the second position under the adsorption action of the crushing device to achieve efficient transmission; when the food processor stops working and the cup body and the crushing device are removed, the lower disk assembly can quickly return from the second position to the first position under its own gravity. And because it only depends on the up and down position switching of the lower disk assembly, and the lower disk assembly only needs to be axially displaced to move up to the second position, while the motor drives the lower disk assembly depending on circumferential driving, for example, a flat shaft or a D-shaped shaft is provided between the motor and the lower disk assembly. At the same time, when the lower disk assembly is switched between the first position and the second position, it is always in the non-working state of the motor. For example, when the cup body and the crushing device are placed, the food processor and the motor are in the stopped state, and the lower disk assembly can quickly switch from the first position to the second position; when the food processor finishes working and the user needs to pick up the cup body, the motor has already completed the work and is also in the stopped state. Therefore, after the cup body and the crushing device are picked up, the lower disk assembly can also quickly switch from the second position to the first position. Even if the cup body is abnormally picked up during the operation of the food processor, due to the safety property of the food processor itself, when the cup body is picked up, the base will timely cut off the power supply of the motor and make the motor stop working, and the lower disk assembly can also be reset in time after the motor stops. The lower disk assembly is limited by the limit holes and the fixing parts to ensure that the lower disk assembly does not directly contact the bottom of the cup, but can be kept in the second position, that is, the distance from the cup body is reduced, and the distance is controllable, so as to achieve stable and reliable power transmission of the lower disk assembly to the upper disk.

[0028] 8. Preferably, the lower disk assembly is fixedly connected to the motor. Further, the motor is movably mounted on the machine base, and the limiting device is arranged on the machine base. For example, the limiting device is the motor mounting post of the machine base, or the limiting device is the mounting table of the machine base, or the machine base includes an upper cover and a lower cover, and the upper cover and the lower cover clamp the motor to form the limiting device. The limiting device is provided with a moving gap for the lower disk assembly and the motor to move axially together, so that the motor and the lower disk assembly can be switched between the first position and the second position integrally. Generally speaking, due to the working requirements, the motor itself has high processing accuracy to ensure stable and reliable operation of the motor. Then, the lower disk assembly is fixedly installed on the motor, and the accuracy between the lower disk assembly and the motor can also be ensured. Thus, the motor and the lower disk assembly form a high-precision integral component. The integral component is movably installed in the machine base and switched between the first position and the second position, which not only ensures the controllability of the distance between the lower disk assembly and the upper disk, but also ensures the stable and reliable connection between the motor and the lower disk assembly. The integral of the motor and the lower disk assembly depends on the limiting device arranged on the machine base to move axially, which can also enable the lower disk assembly to reduce the distance from the upper disk and maintain a stable and reliable transmission position.

[0029] 9. An elastic member for pushing the lower disk assembly to axially displace and reset is further provided, so that when the lower disk assembly is separated from an external acting force, it can be timely reset from the second position to the first position by the elastic member. When the cup body and the crushing device are removed, the lower disk assembly can be switched from the second position to the first position under the pushing action of the elastic member. Although the distance between the lower disk assembly and the upper disk can be minimized when the lower disk assembly is in the second position, the food processor not only has the function of requiring the crushing device to work. For example, the food processor may not be equipped with the crushing device and only rely on the heating function of the cup body to achieve heating and boiling; or, the food processor can also switch different cup bodies and different crushing devices. During the installation of different cup bodies, when the lower disk assembly moves upward from the first position, there will be different second positions. If the lower disk assembly is not reset, interference will occur between the lower disk assembly and the cup body during different functions and different cup bodies, thereby affecting the normal and reliable operation of the lower disk assembly and the cup body.

[0030] 10. A fixing platform for installing the cup body is provided at the top of the machine base, and the fixing platform surrounds the outer periphery of the lower disk assembly. On the one hand, the fixing platform can be used to protect the lower disk assembly to avoid being collided by the cup body or the like when the lower disk assembly is directly exposed. On the other hand, the fixing platform is conducive to forming a positioning reference concentric with the lower disk assembly. When the cup body is installed on the machine base through the fixing platform, the fixing platform defines the concentricity between the cup body and the lower disk assembly. At the same time, a receiving cavity is provided at the bottom of the cup body. When the cup body is installed on the machine base, the lower disk assembly can extend into the receiving cavity and switch from the first position to the second position. The receiving cavity is used to limit and guide the lower disk assembly, facilitating better alignment of the lower disk assembly with the crushing device placed in the cup body to ensure better power transmission between the lower disk assembly and the upper disk.

[0031] 11. A sunk platform is formed on the outer side of the cup bottom. Preferably, a top surface that cooperates with the lower disk assembly is formed at the top of the outer side of the cup bottom by the sunk platform, and the area of the top surface is set to be smaller than the area of the cup body. The top surface can have better flatness to cooperate with the lower disk assembly, and the edge of the sunk platform can also increase the strength of the bottom of the cup body to further prevent the top surface of the sunk platform from deforming and affecting the distance between the lower disk assembly and the upper disk. The lower disk assembly is set to extend into the sunk platform, and the limiting structure is located between the top surface of the sunk platform and the lower disk assembly, which not only ensures the distance between the lower disk assembly and the upper disk but also can appropriately limit the lower disk assembly to ensure that the lower disk assembly can always be in the best alignment position with the upper disk.

[0032] 12. A cup bottom is clamped between the lower disk assembly and the upper disk. The lower disk assembly and the upper disk are magnetically attracted to each other to achieve power transmission. The magnetic poles of the upper disk and the lower disk assembly are both arranged axially, which can ensure that there is a large enough magnetic attraction between the lower disk assembly and the upper disk, and thus ensure stable and reliable power transmission between the lower disk assembly and the upper disk. Therefore, the upper end surface of the lower disk assembly and the cup bottom are set as parallel planes. On the one hand, it can reduce the distance between the lower disk assembly and the cup bottom to ensure the transmission of magnetic attraction. On the other hand, the parallel planes make it convenient to suck the lower disk assembly from the first position to the second position after the cup body is installed, and also ensure that the magnetic attraction received by the lower disk assembly is more balanced. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of a food processor with reliable transmission according to the present invention.

[0034] Figure 2Schematic diagram of the structural decomposition of the upper disk and lower disk components of the first embodiment of the food processor with reliable transmission according to the present utility model.

[0035] Figure 3 Cross-sectional view of the upper disk and lower disk components of the first embodiment of the food processor with reliable transmission according to the present utility model.

[0036] Figure 4A Schematic diagram of the lower disk component of the first embodiment of the food processor with reliable transmission according to the present utility model in the first position state.

[0037] Figure 4B Schematic diagram of the lower disk component of the first embodiment of the food processor with reliable transmission according to the present utility model in the second position state.

[0038] Figure 5 For Figure 4B Partial enlarged view of A in

[0039] Figure 6 Distribution diagram of the distance and magnetic suction force between the upper disk and lower disk components of the food processor with reliable transmission according to the present utility model.

[0040] Figure 7 Cross-sectional view of the upper disk and lower disk components of the second embodiment of the food processor with reliable transmission according to the present utility model.

[0041] Figure 8 Cross-sectional view of the upper disk and lower disk components of the second embodiment of the food processor with reliable transmission according to the present utility model.

[0042] Figure 9A Schematic diagram of the lower disk component of the second embodiment of the food processor with reliable transmission according to the present utility model in the first position state.

[0043] Figure 9B Schematic diagram of the lower disk component of the second embodiment of the food processor with reliable transmission according to the present utility model in the second position state.

[0044] Figure 10 Schematic diagram of the base structure of the third embodiment of the food processor with reliable transmission according to the present utility model.

[0045] The corresponding names of the reference numerals in the figure are as follows:

[0046] 100. Machine base; 101. Upper housing; 102. Lower housing; 103. Motor screw; 110. Cup body; 111. Cup bottom; 112. Counterbore; 113. Sunk groove; 120. Positioning ring; 121. Positioning groove; 2. Motor; 21. Motor shaft; 211. Limit post; 22. Locking screw; 23. Return spring; 24. Motor fixing bracket; 3. Lower magnetic disk; 31. Lower disk body; 311. Limit hole; 312. Mounting hole; 313. Mounting cavity; 32. Lower magnet; 33. Lower cover plate; 4. Crushing device; 41. Upper magnetic disk; 42. Upper magnet; 43. Fixed housing; 431. Housing bottom; 432. Fixed cavity; 434. Upper bearing; 435. Shaft seal; 44. Cutter shaft; 45. Crushing part; 5. Limiting structure; 51. Bearing; 511. Outer ring; 512. Ball; 513. Inner ring; 52. Contact part. Detailed implementation manners

[0047] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0048] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0049] In addition, in the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. For the positional relationships such as "upstream" and "downstream", they are based on the positional relationships when the fluid flows normally.

[0050] Furthermore, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0051] In this application, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0052] In this application, unless otherwise clearly defined or limited, the first feature being "above" or "below" the second feature can 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 terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] Food processors such as wall breakers, cooking machines, and soy milk makers usually rely on a motor to drive a crushing member to rotate. The crushing member collides with and cuts the food ingredients placed in the cup body to complete the crushing process of the food ingredients. During the current crushing operation of the wall breaker, the rotation speed of the motor usually exceeds 10,000 revolutions per minute. During the collision and cutting process between the crushing member and the food ingredients, non - continuous and random impacts are formed between the food ingredients and the crushing member, and the crushing member will generate vibrations and noises. Such vibrations will be transmitted back to the motor and the machine base, which causes the motor and the machine base to also generate relatively serious vibrations and noises during operation. As a technology leader in the field of food processor products, the applicant is constantly exploring to solve the problems of motor vibration and noise.

[0054] As mentioned above, early on, the applicant proposed to use a non - contact transmission method to achieve power transmission between the motor and the crushing member, so as to cut off the mechanical connection between the motor and the crushing member and avoid the vibration impact of the crushing member from reacting back on the motor. Specifically, it includes an upper coupling and a lower coupling. The upper and lower couplings can both include permanent magnets, or one of the upper and lower couplings can contain a permanent magnet and the other is set as a magnetic metal disk. However, such a non - contact transmission scheme still has many technical problems. According to Coulomb's law, the mutual force F between two magnets is F = k×(m1×m2) / r 2, where k is the Coulomb constant, m1 and m2 are the magnetic charges of two magnets, and r is the distance between the two magnets. As can be seen from the above, in order to ensure the mutual force between the upper coupling and the lower coupling of two non-contact permanent magnets, the magnetic charges of the two permanent magnets can be increased, or the distance between the two magnets can be compressed. And since the mutual force is inversely proportional to the square of the distance between them, when the distance increases, the mutual force between the two decreases rapidly.

[0055] As can be seen from the above, although the non-contact transmission scheme can completely isolate the vibration transmission between the motor and the crushing tool, in the application practice of the applicant's product, it is found that the non-contact transmission scheme will have the following technical problems: The non-contact upper coupling and lower coupling rely on the magnetic mutual force between them to achieve power transmission, and the magnetic mutual force between the upper coupling and the lower coupling is limited by the distance between them. When the distance between them becomes larger, the mutual force between them decreases rapidly. In existing soybean milk machines or wall breakers, the machine base and the cup body are assembled from different parts. Each part itself has production tolerances during the production process, and multiple parts will stack the tolerances into a dimensional tolerance chain during the assembly process, resulting in a very large tolerance range for the finished product. Taking the machine base as an example, the cup body is placed on the machine shell, 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 of the motor, and the motor is installed on the fixing column of the machine shell through the motor bracket. There is a shock pad clamped between the motor bracket and the fixing column, and then the motor bracket is locked to the fixing column with screws. Therefore, from the top cup body mating surface of the machine shell to between the lower coupling and the upper coupling, the tolerances of multiple parts and multiple assembly structures are stacked. When taking the top of the machine shell as the reference plane, the lower coupling has a large tolerance range in the axial direction. Such a tolerance range will result in poor distance stability between the upper disk and the lower disk assembly. Further stacking the dimensional chain tolerance of the cup body itself, for different products, the distance between the upper disk and the lower disk assembly varies greatly. For permanent magnets with the same magnetic charge, the increase in position will cause the mutual force between them to decay rapidly, thereby affecting the normal operation of the upper disk and the crushing part.

[0056] Furthermore, when different cup bodies and different machine bases are combined, there will also be position deviations between them; and when different users pick up, place or install the cup body, there will be deviations in the placement position of the cup body; after the product is used for a long time, the wear of the product itself will further increase the dimensional error between the cup body and the machine base. The superposition of these factors will all lead to the uncertainty of the position between the upper disk and the lower disk assembly, thereby affecting the normal operation between the upper disk and the crushing part.

[0057] When directly replacing the traditional upper coupling and lower coupling with the upper coupling and lower coupling with permanent magnets on the basis of the existing food processor, the distance between the upper coupling and the lower coupling is usually fixed due to the existing fixed structure. Therefore, generally, by increasing the magnetic charge intensity of the two permanent magnets, the interaction force between the upper coupling and the lower coupling can be increased. However, when the space structure limit of the existing food processor is reached, it is no longer possible to simply increase the interaction force by increasing the magnetic charge intensity of the permanent magnets. How to reduce the distance between the upper coupling and the lower coupling has become the main technical direction.

[0058] However, in existing food processors such as wall breakers, there are multiple installation components between the upper coupling and the lower coupling. The dimensional tolerances of the different installation components themselves and the installation dimension chain of the installation components will all cause changes in the distance between the upper coupling and the lower coupling. Similar to increasing the magnetic charge, when the preset dimension between the upper coupling and the lower coupling reaches the limit, the tolerance dimension chain of the product itself will greatly affect the interaction force between the upper coupling and the lower coupling. Especially when the bottom of the cup body is closed and the upper coupling with permanent magnets and the crushing part are detachably installed in the cup body, the upper coupling and the lower coupling are more in an uncontrollable state, which greatly affects the distance reliability between the two, making the interaction force between the two in a highly unfixed state. For example, when the user operates the food processor, placing the cup body on the machine base cannot ensure that it is installed in the best position every time, and the wear of each component after long-term use of the food processor will also affect the fit between the cup body and the machine base, thereby affecting the fit distance between the upper coupling and the lower coupling.

[0059] Based on the above technical problems, the non-contact transmission technology using permanent magnets has not been fully applied to products. Although the applicant has further optimized the transmission methods of the existing upper coupling and lower coupling in different ways. For example, the applicant discloses a silent wall breaker in Chinese Invention Patent CN202410217067.4, in which the cup body assembly is relatively floatingly arranged with the motor to absorb the shaking of the cup body assembly and reduce vibration and noise. In addition, the applicant discloses a food processor with stable transmission in Chinese Utility Model Patent CN202320044237.4, and an elastic pad is added between the upper coupling and the lower coupling to reduce the crushing impact in the cup body from being transmitted from the upper coupling to the lower coupling. However, such technical solutions still have deficiencies: 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 when the food materials in the cup body are crushed will be transmitted from the upper coupling to the lower coupling; on the other hand, whether the cup body floats, the motor floats, or both are relatively floatingly arranged, it is only to weaken the vibration between the two. And because the positions of the two are uncertain in the floating state, that is to say, during the working process, the matching positions between the upper coupling and the lower coupling change continuously in the axial direction, which will in turn make the impact between the upper coupling and the lower coupling larger. Further, as described above, in the scheme of using magnetism for contact transmission, vibrations and noises will be directly transmitted between the two, and when there is a speed difference between the magnetic driving part and the magnetic transmission part, they will rub against each other, accelerating the wear of the magnetic driving part and the magnetic transmission part.

[0060] In the prior art, whether it is non-contact magnetic transmission or contact mechanical transmission, the solutions given are all to adopt a "floating" matching structure and use the floating space to relieve and absorb the impact generated by the components. That is to say, what the prior art gives and is easy to think of is how to use the floating space and have relative position changes during the working process 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 really improve the vibration and noise of the product. At the same time, the floating setting method will also cause the distance between the upper disk and the lower disk assembly to change, thus affecting the interaction force between the upper disk and the lower disk assembly. Moreover, in the prior art using magnetic non-contact, it cannot ensure that the distance between the driving coupling and the driven coupling is in a controllable state. And in order to ensure that the distance between the magnetic driving part and the magnetic transmission part is the smallest and in contact so that the driving disk and the driven disk are in contact, the effect of magnetic non-contact transmission is lost. Thus, although the magnetic non-contact transmission scheme can well isolate mechanical vibrations, due to unstable power transmission, it affects the crushing effect, and finally the magnetic non-contact transmission scheme has not been widely used.

[0061] Based on this, on the basis of the non-contact transmission solution, the applicant breaks the conventional solution of the existing simple floating installation, adopts a setting method with variable positions to ensure that the distance between the lower disk assembly and the upper disk is controllably minimized and also avoid mutual friction between the two. First, the crushing device is arranged at the bottom inside the cup body, so that the crushing device is in close contact with the cup bottom to reduce the distance between the upper disk in the crushing device and the cup bottom. Then, the lower disk assembly is set such that after the cup body is installed, under the adsorption action of the upper disk, the lower disk assembly moves upward to a second position where it can closely adhere to the bottom surface of the cup bottom. In this way, both the lower disk assembly and the upper disk are positioned relying on the cup bottom, and the distance between the lower disk assembly and the upper disk is no longer affected by factors such as the assembly and installation of the cup body and the machine base, and the distance between the lower disk assembly and the upper disk can be controlled at an optimal value within control to fully ensure the power transmission between the lower disk assembly and the upper disk. The lower disk assembly has a first position and a second position due to axial displacement, and the displacement amounts of the first position and the second position are used to absorb various error size chains of the product to ensure that the lower disk assembly better adheres to the cup bottom. Among them, the first position is the natural position when the lower disk assembly is installed on the machine base, that is, when not affected by external factors such as the upper disk, the position where the lower disk assembly is located under the action of its own gravity and the gravity of the motor connected to the lower disk assembly. When the cup body and the crushing device are placed, under the action of the cup body and the crushing device, the lower disk assembly can be adsorbed and move upward to reach the second position close to the cup bottom. It should be particularly noted that if the first position of the lower disk assembly happens to be close to the cup bottom, the second position of the lower disk assembly coincides with the first position, that is, the lower disk assembly will not generate displacement. Since the lower disk assembly always remains in the second position during the working process of the food processor and will not generate the "floating" displacement during the working process as in the prior art, the torsion received by the upper disk is stable and reliable, and it can also avoid vibrations and noises generated when the upper disk and the lower disk assembly are floating.

[0062] On the basis of stably and reliably installing the crushing device, especially the upper disk, at the inner bottom of the cup body, in order to solve the technical problems that when the existing food processor adopts non-contact transmission, the distance between the upper disk and the lower disk assembly is unstable and unreliable due to factors such as product assembly tolerance, errors caused by user operation habits, errors when different cup bodies and machine bases are combined, and wear during normal use of the food processor, and relative friction is generated due to direct adsorption between magnetic drive components, the present application provides a food processor with reliable transmission. The food processor includes a machine base, a cup body, and a crushing device. A motor and a lower disk assembly driven by the motor are provided in the machine base. The cup body is detachably installed on the machine base. A lower disk assembly is installed inside the cup body on the inner side of the cup bottom. The crushing device can be fixed on the inner side of the cup bottom, and the crushing device can also be detachably arranged on the inner side of the cup bottom, so that the crushing device can be installed when needed and removed when not needed. For example, the crushing device can be removed when cleaning the cup body to facilitate the cleaning of the cup body and the crushing device. Preferably, since the food processor adopts a non-contact transmission method, the cup bottom completely seals the bottom of the cup bottom, so that no through hole communicating with the outside is provided at the bottom of the cup body, thereby improving the sealing effect of the cup body, that is, preventing the leakage of slurry during the operation of the cup body and avoiding liquid from entering the inside of the cup body when cleaning the cup body. For example, the side wall of the cup body is integrally provided with the cup bottom, or the cup bottom is a closed integral structure and is hermetically and fixedly connected to the side wall of the cup body. The crushing device includes a crushing member and an upper disk. The upper disk is attracted to the lower disk assembly and drives the crushing member to achieve crushing processing under the drive of the lower disk assembly. Preferably, the food processor is usually also provided with a heating device. The heating device and the crushing device cooperate with each other to crush and boil the food ingredients placed in the cup body.

[0063] The lower disk assembly is set with an axial displacement amount so that the lower disk assembly can be switched between a first position and a second position. When the cup body is installed on the base and the cup body and the crushing device are installed in place, the lower disk assembly reaches the second position under the adsorption of the upper disk. Such an action is completed after the cup body is installed. Thus, during the working process of the food processor, the lower disk assembly can always be in the second position. Directly using the displacement amount between the first position and the second position to absorb the dimensional deviation between the food processor, especially between the lower disk assembly and the bottom of the cup, including the assembly tolerance of the base, the assembly tolerance of the cup body, the mating error between the cup body and the base, the operation error of the user, the error of different cup body components, the wear error of the product, etc., so that no matter how different cup bodies are installed or used, it can be ensured that the bottom of the cup and the lower disk assembly are at a preset distance, and during the working process of the food processor and during long-term use, the distance between the lower disk assembly and the bottom of the cup always remains within the preset distance range, thereby making the power transmission between the lower disk assembly and the upper disk stable and reliable.

[0064] Specifically, as Figures 1 - 10 shown, the present application provides a food processor with reliable transmission. The food processor includes a base 100 and a cup body 110. A motor 2 and a lower disk assembly 3 driven by the motor 2 are provided in the base 100. The cup body 110 is detachably installed on the base 100. Preferably, a support table surface is provided at the upper end of the base 100, and the cup body 110 is placed on the support table surface. The motor 2 is arranged in the base 100, and the lower disk assembly 3 extends out of the base 3 and is located at the support table surface. A crushing device 4 is provided in the cup body 110. The crushing device 4 is detachably installed in the cup body 110 and is located inside the bottom of the cup body 110. The crushing device 4 includes a crushing member 45 and an upper disk 41. Both the upper disk 41 and the lower disk assembly 42 include permanent magnets, so that the upper disk 41 and the lower disk assembly 3 adsorb each other and transmit power. When the lower disk assembly 3 is driven by the motor 2 to work, the lower disk assembly 3 drives the upper disk 41 to move and finally drives the crushing member 45 to work to cut and crush the food materials placed in the cup body or stir the food materials in the cup body. Optionally, the crushing device 4 can also be fixed on the inner bottom surface of the cup body 110, and the upper disk and the crushing member can be rotatably arranged at the bottom of the cup. The lower disk assembly depends on the adsorption of the upper disk. When the lower disk assembly does not rotate, it moves axially from the first position to the second position close to the bottom of the cup, and uses the displacement amount between the first position and the second position to absorb various error size chains of the product to ensure that the lower disk assembly better adheres to the bottom of the cup.

[0065] The food processor includes a base and a cup body. The base generally includes a housing, and an installation platform for placing the cup body is provided at the top of the housing. The motor is installed within the housing, and an installation and fixation structure is provided between the motor and the housing. The motor further includes a stator, a rotor, a motor shaft, etc. The lower disk assembly is installed on the motor shaft. The lower disk assembly generally passes through the housing together with the motor and is located at the installation platform to cooperate with the upper disk within the cup body. There are production tolerances in multiple components of the base itself, and there are also installation tolerances between corresponding installation structures. There are multiple components and mating tolerances from the installation platform of the housing to the lower disk assembly. The dimensional chain formed by the superposition of these tolerances results in large dimensional deviations between the installation platforms and the lower disk assemblies of different products. Further, the cup body also includes multiple components such as a cup body, a knife holder, and a cup base. When the cup body is assembled with components such as the knife holder and the cup base, there is also a superposed dimensional chain. When the cup body is installed on the base, the dimensional chain between the cup bottom and the lower disk assembly will superpose the dimensional chains of the cup body and the base. Briefly speaking, the dimensions between the upper disk and the lower disk assembly include: the dimension from the upper disk to the cup bottom, the thickness of the cup bottom itself, and the dimension from the cup bottom to the lower disk assembly. According to Coulomb's law, the mutual force between two magnets is inversely proportional to the square of the distance. Specifically for the food processor, as Figure 6 shown, even if the distance between the upper disk and the lower disk assembly changes by more than 1 mm, there will be a significant impact, causing the magnetic suction force between the lower disk assembly and the upper disk to rapidly decrease. Therefore, how to further optimize and reduce the distance between the upper disk and the lower disk assembly has become the primary problem. The prior art usually relies on floating the upper disk. During the working process, it can not only meet the requirement of reducing the distance between the upper disk and the lower disk assembly but also utilize the floating adjustment of the gap to solve the problem of knife jamming when the stirring member jams. However, there is such a misunderstanding in the prior art. The reason why the stirring member cannot complete crushing and jams is precisely due to the insufficient mutual force between the upper disk and the lower disk assembly. At this time, what should be implemented is to reduce the distance between the upper disk and the lower disk assembly to provide the mutual force so that the crushing member has sufficient power to achieve cutting and crushing. The purpose of floating the motor in the prior art is only to avoid the vibration impact of the crushing member being directly transmitted to the motor through the upper coupling and the lower coupling. Since there is a direct transmission between the upper coupling and the lower coupling, there will be no problem of mutual force attenuation. However, the floating setting will cause an impact due to the change in the axial position between the upper coupling and the lower coupling. And the direct-contact magnetic attraction scheme will lose the effect of non-contact transmission to cut off the mechanical vibration transmission.

[0066] Generally speaking, the existing floating setting method and the magnetic direct adsorption connection method are not suitable for magnetic non-contact power transmission. Therefore, this application breaks this technical prejudice by setting the lower disk assembly to change between a first position and a second position in the axial direction, so that the lower disk assembly can be close to the bottom of the cup to ensure the distance between the lower disk assembly and the upper disk. This application sets the crushing device inside the bottom of the cup body. Whether the crushing device is fixed inside the bottom of the cup or the crushing device is detachably installed inside the bottom of the cup, during the use of the food processor, the crushing device can be completely attached to the bottom of the cup, that is, the distance between the upper disk and the bottom of the cup has been compressed to the minimum. At the same time, the upper disk is directly set inside the bottom of the cup, so it will not be affected by the dimensional chain error generated by the cup body assembly. And the thickness of the cup body itself, especially the thickness of the bottom of the cup, depends on the requirements of product functions. For example, when the bottom of the cup is set to be metal and has a heating function, the thickness of the bottom of the cup is the thickness of the metal bottom, and such a thickness is easy to control. Based on the controllable distance between the bottom of the cup and the upper disk, what further needs to be controlled is the size from the lower disk assembly to the outside of the bottom of the cup. The lower disk assembly is directly set to be able to be close to the bottom of the cup, and the displacement amount of the lower disk assembly switching from the first position to the second position is used to absorb various tolerance dimensional chains and installation deviations of the food processor to ensure that the distance between the lower disk assembly and the bottom of the cup can also be maintained within a preset size range. Thus, based on the inner and outer settings of the bottom of the cup, the distance between the lower disk assembly and the upper disk is always within a controllable preset size and will not be limited by various tolerance dimensional chains of the food processor, so as to ensure the stable and optional power transmission between the lower disk assembly and the upper disk.

[0067] As a specific implementation manner of the food processor with reliable transmission according to the present utility model, such as Figures 1 - 6As shown in the figure, the food processor includes a base 100 and a cup body 110, and the cup body 110 is placed on the base 100. The base 100 is provided with a motor 2 and a lower disk assembly 3, and the lower disk assembly 3 is arranged at the upper end of the motor shaft 21 of the motor 2. The upper end surface of the base 100 is provided with a positioning ring 120, the positioning ring 120 surrounds the periphery of the lower disk assembly 3 in space, the bottom of the cup body 110 is provided with a positioning groove 121, and the bottom of the cup body 110 is further provided with a sunk groove 113. The base 100 is further provided with a limiting device, and the limiting device axially limits the lower disk assembly 3 so that the lower disk assembly 3 has a moving gap in the axial direction. When the cup body 110 is installed 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 sunk groove 113 so that the lower disk assembly 3 is close to the bottom of the cup body 110. By using the cooperation of the positioning ring and the positioning groove, and the cooperation of the lower disk assembly and the sunk groove, the lower disk assembly can be properly close to the inside of the cup body. Here, the height of the lower disk assembly in the axial direction can be higher than that of the positioning ring; or, the height of the lower disk assembly in the axial direction is the same as the height of the positioning ring; furthermore, the height of the lower disk assembly in the axial direction is lower than that of the positioning ring so that the positioning ring can properly protect the lower disk assembly.

[0068] A crushing device 4 is installed inside the cup body 110 on the inner side of the cup bottom. The cup body 110 includes a main body and a cup bottom 111, and the cup bottom 111 is hermetically and fixedly connected to the main body so that the cup body 110 forms a container structure with a completely closed bottom. Compared with the prior art, there is no mechanical through hole in the cup bottom, and there is no risk of water leakage. Moreover, the closed cup body structure is also convenient for cleaning the inside and outside of the cup body. Preferably, in this embodiment, the crushing device 4 is detachably installed on the inner side of the cup bottom 111.

[0069] Preferably, the lower disk assembly 3 includes a lower disk body 31. The lower disk body 31 is provided with a limiting hole 311. The upper end of the motor shaft 21 is provided with a limiting post 211, and the limiting post 211 is inserted into the limiting hole 311. Further, a locking screw 22 and a return spring 23 are provided at the top of the limiting post 211. The locking screw 22 is fixed at the top of the limiting post 211, and there is a gap between the locking screw 22 and the lower disk body 31. The return spring 23 is clamped between the locking screw 22 and the lower disk body 31. The limiting hole 311 and the locking screw 22 constitute the limiting device. At the same time, the gap between the locking screw 22 and the lower disk body 31 forms the moving gap of the lower disk assembly. Since the lower disk assembly has a moving gap in the axial direction, the lower disk assembly has a first position where the crushing device is not placed and a second position where the lower disk assembly moves upward and is close to the outer side of the cup bottom after the crushing device is placed. The limiting device can prevent the lower disk assembly from moving upward excessively and directly contacting the cup bottom, so as to prevent the lower disk assembly from contacting and rubbing against the cup bottom. When the lower disk assembly 3 is in the first position, under the action of gravity and the pushing force of the return spring 23, the bottom of the lower disk assembly 3 abuts against the upper step position of the motor shaft 21. The purpose of such a setting is to have a preset gap between the lower disk assembly in the first position and the cup bottom through the axial displacement of the lower disk assembly 3. After the cup body and the upper disk 41 are installed in place, the upper disk 41 adsorbs the lower disk assembly 3, and the magnetic attraction force between the upper disk 41 and the lower disk assembly 3 overcomes the gravity of the lower disk assembly 3 and the elastic force of the return spring 23, so that the lower disk assembly 3 moves upward to the second position close to the cup body 110. By using the limiting hole and the limiting post, the lower disk assembly 3 can move axially on the motor shaft without rotating circumferentially. In this way, the lower disk assembly can be switched from the first position to the second position; when the food processor is working, the motor can drive the lower disk assembly to rotate and further drive the upper disk to rotate. The axial displacement and circumferential rotation of the lower disk assembly are completed in different time periods: when installing the cup body and the crushing device, the lower disk assembly is sucked upward to the second position close to the cup bottom. During this process, the motor does not rotate, and the lower disk assembly can smoothly switch from the first position to the second position; during the working process of the food processor, since the lower disk assembly is limited to the second position, the lower disk assembly will not displace axially during rotation, which can ensure the stable output between the motor and the lower disk assembly. The return spring is further provided. By using the elastic force of the return spring, when the crushing device is removed, the gravity of the lower disk assembly and the elastic force of the return spring are superimposed, so that the lower disk assembly can quickly return to the first position.During actual use, it is also possible to adjust the displacement of the lower disk assembly in the axial direction by adjusting the clearance between the locking screw and the lower disk body, thereby controlling the distance between the lower disk assembly and the bottom of the cup.

[0070] An installation cavity 313 is provided at the top of the lower disk body 31. A lower magnet 32 made of a permanent magnet is provided in the installation cavity 313. The lower disk assembly 3 further includes a lower cover plate 33 that closes the installation cavity 313. The lower disk body 31 and the lower cover plate 33 enclose the lower magnet 32 therein, preventing the lower magnet 32 from being eroded by external liquids and the like.

[0071] Preferably, the crushing device 4 includes an upper disk 41 and a crushing member 45. The upper disk 41 is connected to the crushing member 45. When the upper disk 41 is driven by the lower disk assembly 3, the crushing member 45 is driven to rotate to achieve cutting and crushing. The crushing device 4 further includes a fixed shell 43 and a cutter shaft 44. The fixed shell 43 is provided with a fixed cavity 432. The upper disk 41 includes an upper magnet 42 made of a permanent magnet. The upper magnet 42 is disposed in the fixed cavity 432. A bottom shell 431 that closes the fixed cavity 432 is further provided at the bottom of the fixed shell 43. The cutter shaft 44 passes through the fixed shell 43. The upper disk 41 and the crushing member 45 are respectively fixed at both ends of the cutter shaft 44. A bearing 434 and a shaft seal 435 are further provided in the fixed shell 43. The cutter shaft 44 passes through the bearing 434 and the shaft seal 435, enabling the upper disk 41, the cutter shaft 44, and the crushing member 45 to rotate relative to the fixed shell 43. At the same time, the shaft seal 435 prevents the liquid in the cup body from flowing into the fixed cavity 432. A gap is provided between the upper disk 41 and the bottom shell 431. With such a setting, it is possible to prevent the upper disk 41 from contacting and rubbing against the bottom shell 431 during rotation, and it can also play a role of centering and positioning at the bottom, preventing the crushing member from reacting on the upper disk when being impacted and swung during operation, causing the upper disk to deflect and ensuring the stable and reliable operation of the upper disk.

[0072] As Figure 4A 、 Figure 4B shown, where Figure 4A when the crushing device 4 is not installed, the lower disk assembly 3 is in the first position. Figure 4B when the crushing device 4 is installed in place, the lower disk assembly 3 is adsorbed to reach the second position. At this time, the lower disk assembly 3 is limited by the limiting device. Although it is close to the bottom of the cup, it will not directly contact the bottom of the cup. As Figure 4A shown, in the first position, the lower disk assembly 3 is subject to the interaction of its own gravity, the gravity of the motor, the installation structure of the machine base, the driving force of the return spring, etc. At this time, the distance between the upper end surface of the lower disk assembly 3 and the top surface of the motor is D2.Figure 4B As shown, when the lower disk assembly 3 is subjected to the magnetic suction force of the crushing device 4 and moves upward to the second position, the distance between the upper end surface of the lower disk assembly 3 and the top surface of the motor is D3. Preferably, D3≥D2. The distance difference between D2 and D3, that is, the upward displacement of the lower disk assembly, is also the error range of the assembly dimension tolerance chain of the food processing unit that the lower disk assembly can absorb. The extreme state among this is D2 = D3, that is to say, at this time the lower disk assembly is exactly in the position close to the bottom of the cup. When the cup body is installed in place, the lower disk assembly does not need to generate displacement, and can ensure that there is a controllable minimum distance between the lower disk assembly and the upper disk, so as to ensure stable and reliable power transmission between the lower disk assembly and the upper disk.

[0073] As Figure 6 shown, it shows the relationship curve between the distance between the upper disk and the lower disk assembly and the corresponding magnetic suction force. As Figure 6 can be seen, when the distance between the upper disk and the lower disk assembly increases, the magnetic suction force between the upper disk and the lower disk assembly drops rapidly. Especially when the total distance between the upper disk and the lower disk assembly is less than 8 mm, the change of the magnetic suction force between the upper disk and the lower disk assembly is faster. It should be noted that Figure 6 reflects the direct contact distance (that is, Figure 6 in the horizontal axis, the distance between the upper disk and the lower disk assembly = the distance from the upper disk to the cup body + the thickness of the cup body itself + the gap L between the cup body and the lower disk assembly) when there are no other structures such as the cup body and the crushing device between the upper disk and the lower disk assembly. In the food processing machine, since the lower disk assembly needs to be installed on the motor, and fixed structures and enclosing structures are required to enclose the permanent magnet of the lower disk assembly, the crushing device needs to be placed in the cup body for crushing processing, and the upper disk and the permanent magnet of the upper disk also need fixed structures and enclosing structures to prevent the permanent magnet of the upper magnet from being directly exposed in the ingredients in the cup body. There is also the thickness of the bottom of the cup itself between the upper disk and the lower disk assembly. Therefore, the actual application distance between the upper disk and the lower disk assembly cannot start from 0. As mentioned above, since the crushing device is directly placed in the cup body, the distance between the upper disk and the bottom of the cup is fixed, and the thickness of the bottom of the cup itself is fixed. Therefore, the main factor affecting the distance between the lower disk assembly and the upper disk is also the gap L between the bottom of the cup and the upper disk assembly.

[0074] For the above reasons, preferably, the gap L is set to be ≤ 2 mm. Of course, due to the existence of the gap, the lower disk assembly and the cup bottom do not directly fit together, that is, the gap L must be greater than 0. Of course, the closer the lower disk assembly and the cup bottom are to 0, the greater the magnetic interaction force between the lower disk assembly and the upper disk. As mentioned above, the distance between the lower disk assembly and the cup bottom is preferably as small as possible. For example, the gap L is set to 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, etc. However, limited by uncontrollable tolerance factors during the product manufacturing process, such as the flatness of the upper end surface of the lower disk assembly and the cup bottom itself, it is impossible for the two to be infinitely close to 0. Therefore, on the premise of ensuring the normal cooperation between the lower disk assembly and the cup body, the gap L between the lower disk assembly and the cup body is set to be ≤ 2 mm. If the gap between the lower disk assembly and the cup body is too large, it will greatly affect the magnetic attraction between the lower disk assembly and the upper disk, and it is impossible to fully ensure the crushing torque requirement of the crushing device.

[0075] It should be noted that for a food processor, although there will be tolerances and assembly errors in each component, the food processor itself is relatively small in size. Therefore, when finally fed back to the lower disk assembly, usually the tolerance displacement of the lower disk assembly does not exceed 2 mm. Therefore, the displacement between the first position and the second position of the lower disk assembly usually does not exceed 2 mm. Of course, there will also be an extreme assembly position for the lower disk assembly. When the cup body is installed in place, the lower disk assembly has already been close to the outer side of the cup bottom, resulting in no obvious change from the first position to the second position for the lower disk assembly, that is, the distance D2 and the distance D3 are the same.

[0076] Preferably, a counterbore 112 recessed towards the inside of the cup body 110 is provided on the outer side of the cup bottom 111. When the cup bottom 111 is made of a metal material, a boss protruding towards the inside of the cup body is formed on the inner side of the counterbore 112 on the cup bottom 111 accordingly. The crushing device 4 is placed on the boss. Correspondingly, when the lower disk assembly 3 is in the second position, the lower disk assembly 3 extends into the counterbore 112. The counterbore is used to limit the upper disk and the lower disk assembly at the same time, ensuring the accurate and reliable alignment of the upper disk and the lower disk assembly, thereby making the power transmission between the upper disk and the lower disk assembly stable and reliable; at the same time, the local setting of the boss on the cup bottom is more conducive to improving the strength of the cup bottom at the position of the boss, thereby making the flatness of the cup bottom at the position of the boss better and preventing deformation from affecting the gap between the upper disk and the lower disk assembly.

[0077] The food processor using the technical solution of the present application uses non-contact magnetic transmission, completely cutting off the mechanical transmission between the crushing device and the motor, avoiding the vibration impact received by the crushing part during operation from being transmitted to the motor, making the food processor more balanced during operation and having lower noise, meeting the user's demand for low noise. The lower disk assembly is set to be directly close to the bottom of the cup. On the basis that the distance between the crushing device and the bottom of the cup is stable and optional, it further avoids the influence of the size factor of the food processor on the distance between the lower disk assembly and the bottom of the cup, thereby ensuring that the distance between the lower disk assembly and the upper disk is within the preset optimal size, and the power transmission between the lower disk assembly and the upper disk is stable and reliable. The lower disk assembly is set to have a first position and a second position. By using the displacement difference between the first position and the second position, it absorbs the dimensional tolerance chain of the assembly of the base and the cup body part of the food processor, the operation error during the installation of the cup body by the user during use, the wear error during the long-term use of the food processor, and other factors that cause dimensional errors, so that the upper disk and the lower disk assembly can always maintain the preset minimum distance, ensuring that the interaction force between the upper disk and the lower disk assembly is within the preset range, so as to ensure that the crushing part can stably and reliably achieve cutting and crushing. Moreover, the lower disk assembly is always maintained at the second position under the upward suction of the cup body and the crushing device, rather than the "floating" change in the axial direction as in the prior art, that is, the distance between the upper disk and the lower disk assembly does not change during operation, thereby ensuring the stable and reliable power transmission of the food processor.

[0078] It can be understood that the motor shaft may not be provided with a limiting post, and the lower disk body is correspondingly not provided with a limiting hole, but only provided with a through hole, and is directly locked at the top of the motor shaft by using a locking screw, 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.

[0079] It can be understood that the base is provided with a magnet that is magnetically repulsive to the lower disk assembly. When the cup body is picked up, the lower disk assembly returns to the first position under the push of the magnet.

[0080] It can be understood that the lower disk assembly may not be provided with a return spring. A sealed space is provided between the lower disk assembly and the motor shaft, and gas is filled in the sealed space to push the lower disk assembly to be in the first position. After the cup body leaves the lower disk assembly, the lower disk assembly is reset under the push of the compressed gas.

[0081] It can be understood that the crushing device is fixed to the inner side of the cup bottom. For example, a fixed shaft or a fixed hole is provided on the inner side of the cup bottom, and the crushing device is fixed to the fixed shaft or the fixed hole. Among them, the crushing member and the upper disk can be rotatably arranged, and the lower disk assembly drives the upper disk and drives the crushing member to rotate and work.

[0082] As another preferred embodiment of the present application, as Figures 7 - 9B shown, a limiting structure 5 is further provided at the upper end of the lower disk assembly 3. The limiting structure 5 is installed at the rotation center of the lower disk assembly 3. When the cup body 110 is installed on the base 100, after the lower disk assembly 3 is switched from the first position to the second position, the limiting structure 5 is clamped between the lower disk assembly 3 and the cup bottom 111 of the cup body 110, so as to form a gap between the lower disk assembly 3 and the cup bottom 111. The limiting structure is used to prevent the lower disk assembly in the second position from directly contacting the cup bottom, making the gap between the lower disk assembly and the cup bottom more stable and reliable, avoiding the lower disk assembly from rubbing against the cup bottom during the working process and affecting the normal working of the lower disk assembly, and the magnetic force between the lower disk assembly and the upper disk is also more stable and reliable.

[0083] Specifically, an installation hole 312 is further provided at the rotation center of the lower disk assembly 3. The limiting structure 5 includes a bearing 51 installed at the installation hole 312. Preferably, the bearing 51 includes a first rotating part and a second rotating part. Among them, the bearing 51 is fixed in the installation hole 312 through the first rotating part, and when the lower disk assembly 3 is in the second position, the second rotating part contacts the cup bottom.

[0084] Preferably, the bearing is a ball bearing, a deep groove ball bearing, a flat thrust bearing, etc., and generally includes an inner and outer ring or upper and lower parts that rotate relative to each other. In this embodiment, the first rotating part is the outer ring 511 of the bearing 51, the outer ring 511 is inserted into the mounting hole 312 and fixedly connected to the lower disk assembly 3, the second rotating part is the inner ring 513 of the bearing 51, and balls 512 are provided between the outer ring 511 and the inner ring 513. When the lower disk assembly 3 rotates, the outer ring 511 rotates together with the lower disk assembly 3, while the inner ring 513 contacts and remains stationary with the cup bottom 111, and the balls 512 are clamped between the outer ring 511 and the inner ring 512 and rotate relative to each other to achieve the relative rotation between the lower disk assembly 3 and the cup bottom 111. Preferably, the second rotating part further includes an abutting member 52 provided on the inner ring 513, the abutting member 52 protrudes from the upper end surface of the lower disk assembly 3, and when the lower disk assembly 3 is in the second position, the abutting member 52 contacts the cup bottom 111. Preferably, the cup bottom 111 is made of stainless steel and is provided with a heating element; the bearing 51 is a metal part, and the abutting member 52 is a plastic part to withstand the impact between the lower disk assembly and the cup bottom when the lower disk assembly switches from the first position to the second position.

[0085] The installation cavity 313 and the installation hole 312 at least partially overlap in the lateral height of the lower disk assembly 3. Thus, the lower magnet 32 provided in the installation cavity 313 surrounds the outer periphery of the bearing 51 installed in the installation hole 312. In the axial direction, when the lower disk assembly 3 is in the second position, the lower magnet 32 can be close to the cup bottom 111, and the distance between the lower disk 32 and the cup bottom 111 is controlled by the protruding height of the bearing 51. By surrounding the lower magnet 32 around the outer periphery of the bearing 51, the radius and circumference dimensions of the installation cavity 313 are larger, more lower magnets can be installed, and at the same height dimension, the lower magnet 32 can also have a stronger magnetic flux to enhance the magnetism of the lower disk assembly 3.

[0086] The upper end of the abutting member 52 protrudes above the upper end surface of the lower disk assembly 3, and there is a height difference D1 between the two. When the lower disk assembly 3 is in the second position, the abutting member 52 abuts against the outer side surface of the bottom 111 of the cup body 110. When the lower disk assembly 3 operates, the abutting member 52 closely cooperates with the bottom 111, so that there is a gap L between the bottom 111 and the top end of the lower disk assembly. Due to the pushing action of the abutting member, the gap L can be set to be small enough. As described above, preferably, L ≤ 2 mm, that is, the upper end surface of the lower disk assembly is close to but does not contact the outer side surface of the bottom of the cup, ensuring that the distance between the lower disk assembly and the upper disk is close enough while avoiding friction between the lower disk assembly and the bottom of the cup. The cooperation of the bearing and the abutting member ensures that the lower disk assembly does not produce vibration and noise during high-speed rotation. Further, the bearing and the abutting member are arranged at the rotation center of the lower disk assembly, and the outer diameter of the abutting member does not need to be set too large, which not only plays a pushing role but also reduces the rotational linear velocity of the abutting member, making the transmission of the food processor more stable and reliable. Preferably, the height difference D1 between the upper end of the abutting member 52 protruding above the upper end surface of the lower disk assembly 3 is equal to the gap L between the bottom 111 of the cup and the upper end surface of the lower disk assembly 3. Of course, the height difference D1 can also be greater than the gap L. This is because the protruding part of the abutting member 52 forms the gap between the lower disk assembly and the bottom of the cup. When the lower disk assembly is attracted by the magnetic force of the upper disk and abuts against the bottom of the cup, the abutting member 52 may be squeezed and deformed appropriately, resulting in the height difference D1 being greater than the gap L. When the abutting member 52 is made of a metal part or a rigid plastic part 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 bottom of the cup can be controlled by controlling the height difference D1 of the abutting member protruding above the lower disk assembly. Since the limiting component is directly installed on the upper end surface of the lower disk assembly, the installation structure between the limiting component and the lower disk assembly is simple, which can ensure that D1 is within a controllable tolerance range. Further, after the limiting component is installed, the limiting component can be processed again to ensure that the height difference D1 between the limiting component and the upper end surface of the lower disk assembly is more accurate, so as to ensure that the gap L is smaller within the controllable range.

[0087] The limiting structure 5 is installed at the rotation center of the lower disk assembly 3, and the limiting structure 5 protrudes from the upper end surface of the lower disk assembly 3. Of course, the limiting structure 5 can also be installed at the bottom of the cup and corresponding to the rotation center of the lower disk assembly 3; alternatively, the limiting structure 5 includes two parts, which are respectively arranged at the bottom of the cup and the lower disk assembly, and after combination, they are located at the rotation center of the lower disk assembly 3. When the cup body 110 is installed on the base 100 and the lower disk assembly 3 is close to the bottom of the cup, the limiting structure 5 abuts against both the lower disk assembly 3 and the bottom of the cup body 110 at the same time to prevent the direct contact between the lower disk assembly 3 and the bottom of the cup. For example, the limiting structure 5 is arranged on the lower disk assembly 3. When the cup body 110 is installed, the cup body 110 abuts against the limiting structure 5, so that the limiting structure 5 is clamped between the lower 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 define the gap between the lower disk assembly 3 and the bottom of the cup. In this way, the distance between the lower disk assembly and the bottom of the cup can be ensured to be close but not in contact.

[0088] As Figure 9A , Figure 9B shown, where Figure 9A it shows that when the crushing device 4 is not installed, the lower disk assembly 3 is in the first position; Figure 9B it shows that when the crushing device 4 is installed in place, the lower disk assembly 3 is adsorbed to reach the second position, and the limiting structure 5 is clamped between the lower disk assembly 3 and the bottom of the cup 111. As Figure 9A shown, in the first position, the lower disk assembly 3 is in a natural state without other external forces. At this time, the distance between the upper end surface of the lower disk assembly 3 and the top surface of the motor is D2. As Figure 9B shown, when the cup body and the crushing device are installed in place, the lower disk assembly 3 is subjected to the magnetic suction force of the crushing device 4 and moves upward to the second position. The distance between the upper end surface of the lower disk assembly 3 and the top surface of the motor is D3. Preferably, D3≥D2. When the lower disk assembly 3 is in the second position, the limiting structure 5 abuts against the bottom of the cup, and a gap is formed between the lower disk assembly and the bottom of the cup. The distance difference between D2 and D3, that is, the upward displacement of the lower disk assembly, is also the error range of the assembly dimension tolerance chain of the food processing unit that the lower disk assembly can absorb. And the limiting structure can form a stable and reliable fitting gap between the lower disk assembly and the bottom of the cup. The lower disk assembly can rotate at a high speed and drive the upper disk, and will not contact and rub against the bottom of the cup.

[0089] A limiting structure is provided between the lower disk assembly and the bottom of the cup. The limiting structure forms a gap between the lower disk assembly and the bottom of the cup, avoiding direct contact and friction between the lower disk assembly and the bottom of the cup. At the same time, the limiting structure enables a stable and reliable distance between the lower disk assembly and the bottom of the cup, and ultimately between the lower disk assembly and the upper disk, thus ensuring stable power transmission between the lower disk assembly and the upper disk. Moreover, the limiting structure is clamped between the lower disk assembly and the bottom of the cup, preventing the upper disk from transmitting vibrations and noises generated during operation to the lower disk assembly through the bottom of the cup. Therefore, the solution of the present application can, on the premise of achieving non-contact transmission, utilize the setting method of the lower disk assembly to solve various dimensional deviations existing in the food processor, such as fitting tolerances, product assembly tolerance dimension chains, product assembly deviations, user usage deviations, product wear deviations, etc. It can also, under the action of the limiting structure, avoid direct contact and friction between the lower disk assembly and the bottom of the cup. The limiting structure is clamped between the lower disk assembly and the bottom of the cup, making the distance between the lower disk assembly and the bottom of the cup close enough but without direct contact, and on the premise of ensuring the magnetic interaction force between the lower disk assembly and the upper disk, avoiding direct friction between the two. The limiting structure located at the rotation center of the lower disk assembly has a relatively small linear velocity under the premise of a relatively small radius during high-speed rotation. Even if the limiting structure rotates relative to the lower disk assembly or the bottom of the cup, the limiting structure can withstand the relative friction between the two within a preset range, thus achieving a structural cooperation that ensures a close distance but no friction between the lower disk assembly and the bottom of the cup.

[0090] The limiting structure is used to limit the lower disk assembly that reaches the second position, avoiding direct fitting between the lower disk assembly and the bottom of the cup. The limiting structure is directly provided between the lower disk assembly and the bottom of the cup. Preferably, the thickness of the limiting structure itself can be used to limit the gap between the lower disk assembly and the bottom of the cup, thereby ensuring the distance between the lower disk assembly and the upper disk. Since the limiting structure has no excessive installation dimension chain, it can be further processed after installation, making it easier to control the gap between the lower disk assembly and the bottom of the cup, and enabling more reliable compression of 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.

[0091] The limiting device or the limiting structure both function to limit the lower disk assembly. Among them, the limiting device directly acts on the axial displacement of the lower disk assembly, enabling the lower disk assembly to be stable axially, but controlling the upper limit of the axial displacement through a moving gap to ensure that the lower disk assembly does not directly contact the cup bottom. The limiting structure is directly clamped between the lower disk assembly and the cup bottom, and the limiting structure can withstand the relative movement between the lower disk assembly and the cup bottom. Thus, the second position defined by the limiting structure can be within the axial displacement space of the lower disk assembly. That is to say, when the limiting structure contacts the cup bottom and is clamped between the lower disk assembly and the cup bottom, the lower disk assembly can still have an upward movement space to meet the installation requirements of different cups. Of course, the limiting device and the limiting structure can also be used in combination. When the lower disk assembly moves upward from bottom to top under the adsorption of the upper disk until the limiting structure is clamped between the cup body and the lower disk assembly, the limiting structure plays a limiting role, while the limiting device does not play a role; when the lower disk assembly continues to displace until the limiting device comes into play and the limiting structure still has not reached between the lower disk assembly and the cup bottom, the limiting device plays a role and limits the continuous upward displacement of the lower disk assembly.

[0092] It can be understood that the limiting structure is arranged on the lower disk assembly. The limiting structure includes a housing arranged outside the lower disk assembly. The lower disk assembly can rotate within the housing. The housing abuts against the cup bottom, and the lower disk assembly rotates to drive the upper disk to work.

[0093] It can be understood that the limiting structure only includes a lower bearing arranged in the mounting hole of the lower disk assembly. The lower bearing includes an inner ring protruding from the upper end face of the lower disk assembly. The outer ring of the lower bearing is fixedly connected to the lower disk body, and the inner ring fits against the outer side of the cup bottom, so that there is a gap between the lower disk assembly and the cup bottom.

[0094] It can be understood that the limiting structure includes a protrusion located at the rotation center of the upper end face of the lower disk assembly. The protrusion extends upward, that is, in the direction of the cup bottom. When the lower disk assembly is in the second position, the protrusion abuts against the outer side face of the cup bottom, so that there is a gap between the upper end face of the lower disk assembly and the cup bottom. When the lower disk assembly works, the protrusion and the lower disk assembly rotate relative to the cup bottom together. Since the protrusion is located at the rotation center of the lower disk assembly, generally, it does not need to be set with too large a size. Therefore, the rotational linear velocity of the protrusion is small and will not generate too large a frictional force, thereby ensuring power transmission under the condition that the lower disk assembly has a gap.

[0095] 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.

[0096] It can be understood that the limiting structure includes a bearing located at the rotation center of the lower disk assembly corresponding to the bottom of the cup. The fixed part of the bearing is connected to the bottom of the cup, and the rotating part of the bearing protrudes downward and abuts against the lower disk assembly in the second position. The lower disk assembly rotates and drives the upper disk to work.

[0097] It can be understood that the limiting structure is fixedly connected to the motor shaft. The motor is installed in the housing and the motor has an axial movement space. The motor and the lower disk assembly are displaced axially together so that the lower disk assembly can be switched between the first position and the second position.

[0098] As another preferred embodiment of the present application, as Figure 10 shown, in this embodiment, the lower disk assembly is fixedly connected to the motor. The motor is movably installed on the base. The limiting device is arranged on the base. The base limits the motor to have a moving gap axially, so that the lower disk assembly fixedly connected to the motor has a moving gap axially. After the crushing device is installed in place, the upper disk adsorbs the lower disk assembly and drives the lower disk assembly and the motor to reach the second position together to realize the driving of the upper disk.

[0099] Specifically, as Figure 10As shown, the machine base 100 includes an upper housing 101 and a lower housing 102. The motor 2 includes a motor fixing bracket 24. The limiting device includes fixing columns and positioning holes located in the upper housing 101 and the lower housing 102. The machine base 100 clamps the motor fixing bracket 24 by the mutually inserted fixing columns and positioning holes to install and fix the motor 2 in the machine base 100. Preferably, the upper housing 101 and the lower housing 102 are fixed by motor screws, and the motor 2 has an axial movement space. When the crushing device is not placed, the motor and the lower disk assembly are limited downward in the lower housing under the action of gravity and are supported by the lower housing, so that the lower disk assembly is located at the first position. When the crushing device is placed, the upper disk adsorbs the lower disk assembly, and the magnetic attraction force between the upper disk and the lower disk assembly overcomes the gravity of the lower disk assembly and the motor, so that the lower disk assembly and the motor move upward together to the second position. At this time, the motor presses upward against the upper housing and is limited by the upper housing. During the operation of the food processor, the lower disk assembly and the motor remain at the second position to maintain the best transmission distance between the lower disk assembly and the upper disk.

[0100] It can be understood that the motor can be directly hoisted on the upper housing by screws or the like and has a movement 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.

[0101] It can be understood that the motor can be supported by the lower housing and has a movement 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.

[0102] The above are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. That is, all equal changes and modifications made according to the present invention are covered by the scope of the claims of the present invention, and no further examples are given here.

Claims

1. A food processor with reliable transmission, characterized in that, The food processor includes a base provided with a motor and a lower disk assembly driven by the motor; a cup body detachably mounted on the base, and a crushing device is provided inside the cup body and mounted on the inner side of the cup bottom; the crushing device includes a crushing member and an upper disk that is attracted to the lower disk assembly and drives the crushing member to work under the drive of the lower disk assembly; the lower disk assembly includes a disk body and a permanent magnet provided on the disk body. The lower disk assembly has a first position where the crushing device is not placed, and a second position where after the crushing device is placed, it moves upward and close to the outer side of the cup bottom from the first position and has a gap with the outer side of the cup body.

2. The food processor with reliable transmission according to claim 1, wherein The food processor is further provided with a limiting structure. The limiting structure includes a bearing provided on the lower disk assembly. The bearing includes a first rotating part and a second rotating part that rotate relative to each other. The first rotating part is fixedly connected to the lower disk assembly, and the second rotating part protrudes from the upper end surface of the lower disk assembly. The second rotating part in the second position contacts the cup bottom.

3. The food processor with reliable transmission according to claim 2, wherein An installation hole for accommodating the bearing is provided at the rotation center of the lower disk assembly, and the permanent magnet of the lower disk assembly surrounds the outer periphery of the installation hole.

4. The food processor with reliable transmission according to claim 2, wherein, The second rotating part includes a contact member that protrudes from the upper end surface of the lower disk assembly.

5. The food processor with reliable transmission according to claim 1, wherein The base is further provided with a limiting device that axially limits the lower disk assembly so that the lower disk assembly has a moving gap axially.

6. The food processor with reliable transmission according to claim 5, characterized in that, The lower disk assembly is provided with a limiting hole and a fixing member sleeved on the motor shaft. The limiting device includes a limiting hole and a fixing member provided on the lower disk assembly and sleeved on the motor shaft. The lower disk assembly can move axially along the motor shaft and the limiting hole to form the moving gap.

7. The food processor with reliable transmission according to claim 5, wherein The lower disk assembly is fixedly connected to the motor, and the limiting device is provided on the base so that the lower disk assembly and the motor can move axially relative to the base to form the moving gap.

8. The food processor with reliable transmission according to claim 5, characterized in that, The base is further provided with an elastic member that pushes the lower disk assembly to axially displace in the moving gap and reset.

9. The food processor with reliable transmission according to claim 1, wherein, A fixing platform for installing the cup body is provided at the top of the base. The fixing platform surrounds the lower disk assembly. A receiving cavity for accommodating the lower disk assembly is provided at the bottom of the cup body. The lower disk assembly extends into the receiving cavity and switches from the first position to the second position.

10. The food processor with reliable transmission according to claim 1, wherein, A sunk platform that is recessed toward the inside of the cup body is provided on the outer side of the cup bottom. The lower disk assembly in the second position extends into the sunk platform.

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