A multifunctional food processor

Abstract

The application relates to a multifunctional food processor, a first output assembly and a second output assembly are respectively provided with a first output shaft and a second output shaft with different rotating speeds, a transmission head is accommodated in a containing cavity and is sleeved on the outside of the first output shaft, the first output shaft is provided with a first meshing part in transmission engagement with the transmission head, the inner wall of the containing cavity is provided with a second meshing part in transmission engagement with the transmission head, the first meshing part and the second meshing part are arranged in axial misalignment, the transmission head can be axially moved between the two meshing parts to selectively engage in transmission with the first meshing part and the second meshing part, the transmission head, the containing cavity and the first output shaft are coaxially arranged, and the stirring part drives the transmission head to move between the first meshing part and the second meshing part. The scheme depends on the axial movement of a transmission head to different meshing part positions to realize different rotating speed outputs, also solves the problem that material entering the gap between the double output shaft scheme is difficult to clean, and ensures the stability and smoothness of the axial movement of the transmission head.

Description

Technical Field

[0001] This utility model relates to the field of crushing device technology, specifically to a multi-functional food processing machine. Background Technology

[0002] In recent years, high-end meat grinders have evolved into dough-mixing meat grinders with high-speed output for grinding meat and low-speed output for kneading dough. These multi-functional machines are quite popular with consumers. Of course, based on the high-speed output, software programs can control the mixing time and steps to achieve functions such as chopping vegetables, mincing meat, and making meat granules. On the low-speed output side, the mixing rod can be replaced with a whisk to expand the egg-beating function.

[0003] A dough mixer and meat grinder typically includes a processing cup, a meat grinder blade, a dough mixing rod, and a power assembly. The power assembly includes a motor, a first reduction gear assembly and a second reduction gear assembly driven by the motor. The first reduction gear assembly has a first output shaft that drives the meat grinder blade, and the second reduction gear assembly has a second output shaft that drives the dough mixing rod.

[0004] There are generally two ways to arrange the first and second output shafts:

[0005] 1. As disclosed in patent CN202111147958.X (hereinafter referred to as Patent 1), the first output shaft and the second output shaft are at the same horizontal height, with the second output shaft sleeved outside the first output shaft (i.e., nested). The second output shaft is connected to the dough-making rod via an external coupling, and the output end of the first output shaft is integrally equipped with an internal coupling. The internal coupling is inserted into and engaged with the male connector of the meat grinder (i.e., the meshing teeth of the connector are set on the outer peripheral wall of the connector). Since the first and second output shafts rotate simultaneously but at different speeds, a gap must be provided between the outer peripheral wall of the first output shaft and the inner peripheral wall of the second output shaft. Furthermore, the gap must allow the female connector of the dough-making knife (i.e., the meshing teeth are set on the inner peripheral wall of the opening at the top of the connector) to insert and engage with it; therefore, this gap must be greater than the wall thickness of the female connector. As a result, when the male connector of the meat grinder is inserted into the hole of the inner coupling, the gap is still exposed and the gap is large. During the meat grinding process, the material can easily enter the gap between the two output shafts from the space between the top surface of the meat grinder shaft and the bottom wall of the second output head. Once it enters, it is difficult for the user to clean it, and over time it will produce an odor.

[0006] Furthermore, this design, where the second output shaft is an external coupling, necessitates that the dough mixer's connector be a female connector, meaning the top of the female connector must have a bowl-shaped opening to fit the external coupling. Consequently, flour tends to accumulate at the bowl-shaped opening during addition, requiring a perforated hole below the opening, further complicating the dough mixer's structure. While the perforated hole solves the problem of flour accumulation during addition, it introduces the issue of dough clumps overflowing from the perforated hole into the bowl-shaped opening and entering the gap between the two couplings, making cleaning difficult.

[0007] 2. The solution disclosed in patent CN202121069062.X (hereinafter referred to as Patent 2), filed in the same year as Patent 1, mainly discloses that the second output shaft is located below the first output end and radially expanded relative to the first output end. Both the first and second output shafts are provided with internal couplings, so that the interiors of the first and second output shafts form stepped connecting shaft holes. The male connector of the meat grinder needs to be relatively long and have a small radial gear to adapt to the internal coupling of the first output shaft, while the connector of the dough mixing rod can be relatively short and have a large radial dimension to adapt to the internal coupling of the second output shaft. The stepped connecting shaft hole allows the top of the dough mixing rod to be provided with a columnar male connector without a bowl-shaped opening, which can effectively reduce the accumulation of flour on the top of the dough mixing rod. Therefore, the dough mixing rod does not need to be provided with a perforated hole communicating with the bowl-shaped opening, avoiding the dough flakes from flowing up into the gap between the two output shafts through the perforated hole during kneading. However, in this design, when the meat grinder's connector is inserted into the first output shaft, a large redundant gap remains between the outer peripheral wall of the male connector and the inner peripheral wall of the second output shaft. As a result, during the grinding process, material can still overflow into this redundant gap. During cleaning, on the one hand, the residual material is difficult to clean completely, resulting in material residue in the stepped shaft hole, producing an odor, and also affecting the subsequent connection between the mixer's connector and the shaft hole. On the other hand, when users wipe the material from the stepped shaft hole with a cloth, they may push material originally in the second output shaft hole into the first output shaft hole, which is deeper and has a smaller radial dimension, making it even more difficult to clean.

[0008] In summary, both Patent 1 and Patent 2 have issues where, during the high-speed output of the meat grinder, there are gaps or redundant gaps exposed at the output end. This makes it easy for materials to enter these two types of gaps during the working process, resulting in difficulties in cleaning the materials out. These problems remain to be solved.

[0009] Considering the problem of material easily entering the gap at the output end only with dual output shafts, the applicant, during its research, also proposed a technical solution, referring to application number CN202111359257.2. This solution involves setting a first planetary output shaft with a first cavity in the first gearbox transmission mechanism and a second planetary output shaft with a second cavity in the second gearbox transmission mechanism. The two planetary output shafts are vertically aligned, allowing the first and second cavities to connect vertically, forming a movable cavity for the axial movement of the clutch output shaft. The clutch output shaft moves to engage with the meshing teeth of the first cavity to achieve high speed, and moves to engage with the meshing teeth of the second cavity to achieve low speed. In further research, the applicant found that while this solution solves the problem of material easily entering the gap at the output end, the vertical alignment of the two planetary output shafts increases the overall height of the movable cavity. This results in a longer cantilever end of the clutch output shaft extending into the movable cavity, making it more prone to wobbling. During wobbling, misalignment of the meshing teeth on the outer wall of the clutch output shaft with the meshing teeth in the movable cavity can easily occur during gear shifting, making it difficult to guide the gears. On the other hand, the elastic reset member of the clutch output shaft is sleeved below the first transmission part. During the repeated axial movement of the clutch coupling, the elastic reset member is not only at risk of wear due to engagement with the meshing teeth of the first transmission part, but also at risk of being clamped between the first transmission part and the top wall of the bottom cavity, making it difficult for the clutch coupling to enter the first position. Utility Model Content

[0010] The purpose of this invention is to provide a multifunctional food processing machine, aiming to optimize the mechanical structure of the main unit to output two different speeds to meet different processing requirements. Furthermore, it addresses the existing technology's problems of material easily entering the gap between the nested double output shafts at high speeds, or the large redundant gap between the outer peripheral wall of the male connector of the meat grinder and the inner peripheral wall of the second output shaft, which is difficult to clean. Additionally, it further solves the problem of severe wobble and jamming during axial movement of the clutch coupling when switching gears.

[0011] To achieve the above objectives, this utility model provides a multi-functional food processing machine, comprising:

[0012] The host computer includes a first output component and a second output component. The first output component further includes a first output shaft driven to rotate at a first speed. The second output component includes a second output frame driven to rotate at a second speed. The second output frame has a receiving cavity, and the front end of the first output shaft extends into the receiving cavity.

[0013] A transmission head is housed within the receiving cavity and sleeved on the outside of the first output shaft. The first output shaft has a first engagement portion that engages with the transmission head. The inner wall of the receiving cavity has a second engagement portion that engages with the transmission head. The first engagement portion and the second engagement portion are axially offset. The transmission head can move axially between the first engagement portion and the second engagement portion to selectively engage with either the first engagement portion or the second engagement portion. The transmission head, the receiving cavity, and the first output shaft are arranged coaxially.

[0014] A stirring element is connected to a transmission head and drives the transmission head to move axially to engage with a first meshing part or a second meshing part. The first output shaft or the second output frame drives the stirring element to rotate through the transmission head.

[0015] The multifunctional food processing machine provided by this utility model provides a structural basis for achieving two speed outputs as in the prior art by setting a first output component and a second output component, respectively equipped with a first output shaft having a first speed and a second output frame having a second speed. Specifically, this application, by setting the transmission head to be axially movable to engage with the first meshing part under the push of the stirring component, enables the transmission head to drive the stirring component to move at the first speed; the transmission head can also be axially movable to engage with the second meshing part, enabling the transmission head to drive the stirring component to rotate at a second speed. In this application, the transmission head, the receiving cavity, and the first output shaft are further arranged coaxially, so that when the transmission head moves axially in the receiving cavity, the three are well aligned and will not tilt. This avoids the problem of switching jams or inability to switch due to tilt when the transmission head switches between the first speed engaged with the first meshing part and the second speed engaged with the second meshing part.

[0016] Compared to existing technologies that require two output shafts (equivalent to two drive heads) to achieve high and low speed outputs by respectively adapting to the meat grinder and dough mixer, this application only requires the axial movement of a single drive head to achieve two output speeds (i.e., one high and one low speed). There are no restrictions on whether the mixing element or the processing cup is single or multiple. For example: 1. When both the mixing element and the processing cup are single, i.e., the meat grinder and dough mixer can be the same mixing element, the connector of the mixing element can be telescopic, i.e., it can have two states: long and short. In the long connector state, the drive head can be pushed axially to engage with the first meshing part; in the short connector state... 1. The drive head can be moved to engage with the second meshing part, and vice versa; 2. When there is a single stirring element and two processing cups, i.e., the same stirring element can be used for mincing meat and kneading dough, the height of the bottom positioning part of the processing cup can be controlled to drive the stirring cup to apply two different pushing distances to the drive head. Compared with the existing technology that requires two stirring elements with different connecting heads, the consistency of the stirring element is better; 3. When there is a single processing cup and two stirring elements, one stirring element can be used for mincing meat and the other for kneading dough. The different heights of the different stirring elements installed in the same processing cup can be controlled to achieve different output speeds by pushing the drive head to slide different distances. In this case, the dough kneading rod does not need to be equipped with a bowl-shaped opening and a hole. The connecting head of the dough kneading rod and the connecting head of the meat grinder can both be solid convex pillar structures, which enhances the ease of cleaning of the stirring element and avoids the accumulation of flour on the top of the connecting head of the dough kneading rod when adding flour. Meanwhile, in this solution, regardless of whether there is one or multiple agitators, after the agitator's connector is connected to the single transmission head, there is only a small gap at the point of insertion and mating between the two. Typically, the meshing gap is around 0.1mm. This eliminates the large gap between the inner and outer output shafts in existing technologies, or the redundant gap between the meat grinder's connector and the second output shaft hole in stepped shaft hole designs. Therefore, it solves the problem of materials easily entering these two gaps, making them difficult to clean. More importantly, in this application, the front end of the first output shaft extends into the receiving cavity, and the space for the transmission head to move is only the depth of the receiving cavity, rather than requiring the concave cavity of the first output shaft and the receiving cavity of the second output shaft to be vertically connected to form a deeper moving cavity, as in existing technologies. This significantly shortens the axial movement distance of the moving head, reducing the sway of the cantilever end of the moving head within the receiving cavity and making it easier to move between the first and second meshing parts. Furthermore, in this application, the moving head is radially limited by the inner wall of the receiving cavity and the inner and outer sleeves of the first output shaft, making its axial movement smoother.

[0017] Preferably, it also includes a compression spring disposed within the receiving cavity to pre-press the transmission head against the bottom of the receiving cavity.

[0018] This design incorporates a compression spring, which allows the transmission head to automatically return to its initial state when there is no stirring element pushing it from the bottom. The spring's rebound force pre-presses the transmission head axially downwards against the bottom of the receiving cavity, effectively preventing the transmission head from jamming due to its own weight when no compression spring is used. During the reset process, if water or liquid food accidentally enters between the transmission head and the cavity wall, or between the transmission head and the base through-hole, the reset force will remove it, preventing residue. After reset, the outer wall of the transmission head can be cleaned. Alternatively, this process of "cleaning the outer wall of the transmission head – pressing the transmission head – automatic reset to remove dirt" can be repeated multiple times to truly clean the gap between the outer wall of the transmission head and the receiving cavity, or the gap between the outer wall of the transmission head and the through-hole. Meanwhile, the axial preload of the transmission head by the compression spring helps to avoid collision noise or wear between the transmission head and the sidewall of the receiving cavity during transportation or handling of the food processing machine, thus extending the service life of the transmission head. Furthermore, the transmission head exhibits greater stability during engagement with the first or second meshing part, preventing immediate axial movement and loss of normal operating status when the machine vibrates or shakes due to human factors.

[0019] Preferably, one end of the compression spring abuts against the first output shaft, and the other end abuts against the transmission head.

[0020] This application achieves this by pressing one end of the compression spring against the first output shaft and the other end against the transmission head, i.e., the compression spring is not sleeved on the outside of the first output shaft. This allows the axial force of the compression spring to act directly on the two components closest to the central axis of the receiving cavity, making the connector more stable when it is pushed axially downward.

[0021] Preferably, a pressure plate is provided above the receiving cavity, the first output shaft passes through the pressure plate, and the compression spring is sleeved on the outside of the first output shaft, with one end abutting against the pressure plate and the other end abutting against the transmission head.

[0022] A compression spring is fitted onto the outside of the first output shaft, increasing its radial dimension and thus its elastic force. This ensures that the drive head does not jam when automatically resetting using the compression spring. Simultaneously, because the compression spring is fitted onto the outside of the first output shaft, it does not damage the internal structure of the shaft, ensuring its strength and improving the stability of the drive head driven by the cantilever end of the first output shaft. The pressure plate primarily serves as a top limiting structure for the compression spring.

[0023] Preferably, it also includes a processing cup, the bottom of which is provided with a first positioning part and a second positioning part that are connected to the bottom of the stirring member. The first positioning part and the second positioning part are at different heights from the bottom surface of the processing cup. The stirring member is adapted to be installed with the first positioning part so that the push transmission head moves to engage with the first meshing part. The stirring member is adapted to be installed with the second positioning part so that the push transmission head moves to engage with the second meshing part.

[0024] Preferably, it also includes a processing cup with a positioning part at the bottom, the bottom of the stirring member is connected to the positioning part, the stirring member includes a first stirring member and a second stirring member, the height of the first stirring member and the height of the second stirring member are different, the first stirring member is driven by a transmission head engaging with a first meshing part, and the second stirring member is driven by a transmission head engaging with a second meshing part.

[0025] Regarding how to drive the transmission head axially to achieve a high-speed output state for meshing with the first meshing part or a low-speed output state for meshing with the second meshing part, this application provides two solutions. In the first solution, the approach is not to limit the number of stirring components and processing cups, but only to limit the processing cups to have a first positioning part and a second positioning part, with the first and second positioning parts at different heights from the bottom surface of the processing cup. After the stirring component is adapted to different positioning parts, it can drive the transmission head axially to mesh with the first or second meshing part. Specifically, for example, when there is a single processing cup, the positioning part of the processing cup can be a stepped shaft-type positioning post, with the upper half of the positioning post being the first positioning part and the lower half being the second positioning part; when there are two processing cups, the first and second positioning parts are located in the two processing cups respectively. Of course, to solve the problem of difficult cleaning of the positioning hole at the bottom of the stirring component, existing meat grinders set a positioning groove at the bottom of the processing cup, which surrounds the bottom of the cutting shaft of the stirring component to achieve positioning of the stirring component. Therefore, when the processing cup is a single unit, the positioning groove can be a stepped positioning groove, with the deeper one being the second positioning part and the shallower one being the first positioning part. When the stirring component is installed with positioning grooves of different depths, the stirring component can achieve different overall heights, thereby driving the transmission head to achieve different processing states.

[0026] In the second approach, the solution is to eliminate the need to limit the number of processing cups. Instead, it requires two stirring components, with the first and second stirring components having different heights. After the two stirring components engage with the positioning part of the processing cup, one can drive the transmission head axially to engage with the first meshing part, and the other can drive the transmission head axially to engage with the second meshing part. For example, two different stirring components can be matched with one processing cup. When the two stirring components are inserted into the processing cup, there is a height difference between the top surface of the stirring component and the bottom surface of the processing cup. This height difference is equal to the sliding distance of the transmission head's axial movement when switching between high and low speed output states. For instance, one stirring component could be a meat grinder with a cutting edge, and the other a dough mixer without a cutting edge. This allows for different driving strokes of the transmission head, enabling either high-speed or low-speed output states. Alternatively, two stirring components can be matched with two processing cups, as long as the transmission head can engage with either the first or second meshing part. This solution enables a single drive head to be matched with different mixing components to achieve different speed outputs, thus enabling the processing of two very different ingredients, such as mincing meat (the ingredients must be pulverized) and kneading dough (the ingredients must be kneaded). This solves the problem that the same ingredient can only be processed with different coarseness by using the same mixing components and relying solely on the difference in speed.

[0027] Preferably, the top of the transmission head is provided with a mating cavity for the first meshing part to be inserted, and the inner peripheral wall of the mating cavity is provided with internal meshing teeth that mesh with the first meshing part, and the outer wall of the transmission head is also provided with external meshing teeth that mesh with the second meshing part.

[0028] In this design, the first meshing part of the first output shaft engages with the inner meshing teeth of the mating cavity. When both are fully engaged, the first output shaft drives the transmission head to move at a first rotational speed, and the inner circumferential wall of the receiving cavity separates from the outer circumferential wall of the transmission head. Conversely, when the second meshing part of the receiving cavity engages with the outer meshing teeth of the transmission head, the first output shaft disengages from the mating cavity, and the second output frame drives the transmission head to move at a second rotational speed. The transmission head has inner and outer teeth radially separated. Compared to designs with two segments of outer meshing teeth with different radial dimensions on the outer side of the transmission head, this eliminates the need to consider the avoidance of the other meshing tooth during axial movement of the transmission head.

[0029] Preferably, the first output shaft further includes a first guide portion located below the first engagement portion, and the mating cavity includes a first mating cavity with internal meshing teeth and a second mating cavity located below the first mating cavity, with the first guide portion extending into the second mating cavity.

[0030] The insertion of the first meshing part and the mating cavity of the transmission head has already achieved radial limiting between the first output shaft and the transmission head. The first guide part, located below the first meshing part and without meshing teeth on its outer peripheral wall, further increases the insertion depth between the first output shaft and the transmission head, further enhancing the radial limiting effect. Specifically, when the first meshing part is inserted into the first mating cavity and the first guide part is inserted into the second mating cavity, the transmission head is at its first rotational speed (i.e., high-speed output state). The higher the speed, the more severe the shaking of the transmission head and the first output shaft. However, by inserting the first guide part into the second mating cavity, the alignment of the transmission head and the first output shaft is ensured on the basis of the meshing transmission of the first meshing part and the first mating cavity, reducing the shaking of the transmission head and the first output shaft. When the first meshing part disengages from the first mating cavity, part of the first guide part is located in the first mating cavity, while the other part is still inserted into the second mating cavity, preventing the transmission head from disengaging from the radial limiting of the first output shaft and always maintaining the alignment of the transmission head and the first output shaft.

[0031] Preferably, the receiving cavity further includes a second guide portion that is axially offset from the second engaging portion, the second guide portion being used to guide the axial movement of the transmission head.

[0032] This solution enables the following: when the stirring element pushes the transmission head axially until its outer peripheral wall aligns with the second guide portion, the second output frame cannot drive the transmission head to rotate at the second speed, while the transmission head can engage with the first meshing portion to rotate at the first speed. When the stirring element pushes the transmission head axially until its outer peripheral wall is axially misaligned with the second guide portion and engages with the second meshing portion, the first meshing portion disengages from the transmission head, and the second output frame can drive the transmission head to rotate at the second speed. The second guide portion primarily guides the transmission head during its axial movement within the receiving cavity, enabling precise switching between the two meshing states.

[0033] Preferably, the outer peripheral wall of the transmission head is radially provided with a limiting protrusion, and the inner peripheral wall of the receiving cavity is provided with a limiting step that supports the limiting protrusion.

[0034] Generally, there are two situations where the transmission head is not subjected to an axial inward pushing force: (1) the transmission head and the stirring component are separate plug-in structures, and the bottom of the stirring component needs to be positioned by the positioning part of the processing cup when the stirring component is separated from the transmission head; (2) after the transmission head and the stirring component are fixedly connected, the lower end of the stirring component is suspended. In the above two situations, if the transmission head is further subjected to the outward elastic force of the compression spring, or is pulled by human force, or is accidentally dropped from the main unit, the transmission head is easy to come out of the receiving cavity. To this end, in this solution, a radially protruding limiting protrusion is set on the outer periphery of the transmission head, so that the limiting protrusion and the limiting step of the receiving cavity are axially limited, effectively preventing the transmission head from coming out of the receiving cavity and causing damage to the machine.

[0035] Preferably, the host is equipped with a motor, and the first output component includes a primary sun gear that drives and cooperates with the output shaft of the motor, a plurality of primary planet gears meshing with the outer periphery of the primary sun gear, and a first output frame disposed at the bottom of the plurality of primary planet gears and moving with the primary planet gears;

[0036] The second output component includes a plurality of secondary planetary gears, a second output frame disposed at the bottom of the secondary planetary gears and moving with the secondary planetary gears, the receiving cavity being disposed in the second output frame, and the first output frame including a first output shaft meshing with the secondary planetary gears.

[0037] This solution employs a two-stage planetary reduction gear assembly in the food processing machine to provide two output speeds, respectively meeting the different processing requirements of the first speed (e.g., high-speed meat grinding) and the second speed (e.g., low-speed dough kneading). The first speed is lower than the direct output speed of the motor, reducing grinding noise during high-speed grinding. The second speed, after two-stage reduction, provides greater torque compared to a direct reduction to the second speed, making it more suitable for low-speed, high-torque processing conditions such as dough kneading. Furthermore, the overall speed ratio is shared by both output components (i.e., the two-stage reduction gear assembly), which allows for a smaller radial dimension of the fixed gear ring housing the planetary gears, thereby reducing the radial dimension of the main unit.

[0038] Preferably, the host is equipped with a motor, and the first output shaft of the first output component is the output shaft of the motor; the second output component includes a plurality of planetary gears driven by the output shaft of the motor, and the second output is mounted on the bottom of the plurality of planetary gears and moves with the planetary gears.

[0039] Compared to solutions that use two-stage reduction to achieve the first and second speeds, this design only requires one set of planetary gears and a sun gear. The assembly process is simple, making it suitable for designs with a flat main unit, such as those used in stand mixers. Of course, if a flat main unit design is not desired, a variable frequency brushless motor can be preferred to optimize the main unit's size, making it suitable for conventional top-mounted dough mixers and meat grinders. Attached Figure Description

[0040] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0041] Figure 1 This is a cross-sectional view of the food processing machine with the dough-mixing rod installed in one embodiment of the present invention.

[0042] Figure 2 This utility model Figure 1 A magnified view of a portion of region A shown in the diagram.

[0043] Figure 3 This is a cross-sectional view of the food processing machine with the meat grinder blade installed in one embodiment of the present invention.

[0044] Figure 4 This utility model Figure 3 A magnified view of a portion of region B shown in the diagram.

[0045] Figure 5 This is a cross-sectional view of the main unit of this utility model.

[0046] Figure 6 This is a schematic diagram of the structure of the first-stage planetary deceleration assembly in this utility model.

[0047] Figure 7 This is a schematic diagram of the transmission head in this utility model.

[0048] Figure 8 This is a schematic diagram of the transmission head in this utility model from another perspective.

[0049] Figure 9 This is a schematic diagram of the structure of the second output frame in this utility model.

[0050] Figure 10 This is a schematic diagram of the second output frame in this utility model from another perspective.

[0051] Figure 11 This is a schematic diagram of the gearbox structure in one embodiment of the present invention.

[0052] Figure 12 This is a schematic diagram of the structure of a meat grinder installed inside a processing cup according to one embodiment of the present invention.

[0053] Figure 13 To and Figure 12 A schematic diagram of the structure in the same embodiment where the dough-mixing rod is installed inside the processing cup.

[0054] Figure 14This is a schematic diagram of the structure of the meat grinder installed inside the processing cup in another embodiment of the present invention.

[0055] Figure 15 To and Figure 14 A schematic diagram of the structure in the same embodiment where the dough-mixing rod is installed inside the processing cup.

[0056] Figure 16 This is a schematic diagram of the structure of the meat grinder installed inside the processing cup in another embodiment of the present invention.

[0057] Figure 17 To and Figure 16 A schematic diagram of the structure in the same embodiment where the meat grinder is installed inside another processing cup.

[0058] Figure 18 This is a schematic diagram of the structure of the meat grinder installed inside the processing cup in another embodiment of the present invention.

[0059] Figure 19 To and Figure 18 A schematic diagram of the structure in the same embodiment where the dough-mixing rod is installed inside the processing cup.

[0060] Figure 20 This is a schematic diagram of the host in its initial state in an additional embodiment of the present invention.

[0061] Figure 21 To and Figure 20 A schematic diagram of the host in a low-speed output state under the same embodiment.

[0062] Explanation of reference numerals in the attached figures:

[0063] 1-Main unit; 11-Motor; 111-Output shaft; 112-Base through hole; 12-Reduction gearbox; 121-First stage planetary reduction assembly; 1211-First stage planetary gear; 1212-First stage sun gear; 1213-First stage upper support; 122-Second stage planetary reduction assembly; 1221-Second stage planetary gear; 1222-Second stage upper support;

[0064] 2-Processing cup; 21-Positioning post; 22-Cup lid;

[0065] 3-Mixing component; 31-Meat grinder; 32-Dough mixing rod; 33-Knife shaft; 34-Connector;

[0066] 4-First output frame; 41-Frame body; 42-Annular enclosure; 43-First output shaft; 431-Secondary sun gear; 432-First meshing part; 433-First guide part;

[0067] 5-Second output frame; 51-Receiving cavity; 511-Second guide part; 512-Second engagement part; 513-Pressure plate; 514-Limiting step;

[0068] 6-Drive head; 61-First mating cavity; 62-Second mating cavity; 63-Third meshing part; 65-Output section; 66-Slot; 67-Drive hole;

[0069] 7-Compression spring. Detailed Implementation

[0070] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0071] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0072] As mentioned earlier, due to the increasing demand from consumers for multifunctional meat grinders, dough-mixing meat grinders have become a popular choice. However, the applicant has found that existing dough-mixing meat grinders, or food processing machines with different speeds for both meat grinding and dough mixing, all use two different mixing components (i.e., the meat grinder blade 31 and the dough mixing rod 32). Whether it is a nested dual-output type or a stepped shaft dual-output type, there are at least two problems: 1. The connecting head 34 of the meat grinder blade 31 and the dough mixing rod 32 needs to be made with different radial and vertical dimensions to accommodate different output shafts (holes); 2. In high-speed meat grinding mode, there are gaps or redundant gaps exposed at the output end, which makes it easy for materials to enter the aforementioned two types of gaps during operation, making it difficult to clean the materials out.

[0073] Regarding the first question, based on existing technology, due to the top-mounted food processing machine design, the secondary planetary reduction assembly must be located below the primary planetary reduction assembly. Therefore, the low-speed output shaft hole is either located outside the high-speed output shaft hole (i.e., the two output shafts are nested in parallel) or lower than the high-speed output shaft hole. Furthermore, since the motor's output shaft drives the first output shaft of the primary planetary reduction assembly, the outer diameter of the secondary planetary reduction assembly is usually not less than that of the primary planetary reduction assembly. The secondary output shaft of the secondary planetary reduction assembly is essentially the second output bracket. The second output bracket must expose the first output shaft; therefore, the radial gear of the dough-grinding rod connector must be larger than the meat grinder connector. Based on this, in previous research, the applicant has not considered a dual-output solution where the radial dimensions of the meat grinder and dough-grinding rod connectors are consistent, let alone conceived of a solution where only one blade can accommodate both the high-speed and low-speed output shafts.

[0074] Regarding the second crucial issue, those skilled in the art would readily realize that during meat grinding, the male connector of the meat grinder blade could be adapted to the stepped shaft hole shape to eliminate redundant gaps. It's easy for those skilled in the art to understand that as long as both gaps are blocked during high-speed meat grinding, it's sufficient. For example, before obtaining the technical solution of this application, the applicant discovered a researcher who disclosed a solution where the meat grinder blade includes a lower blade assembly and an upper blade assembly. The upper blade assembly is mounted on the blade holder of the lower blade assembly, and the top of the blade holder of the lower blade assembly extends upward through the blade holder of the upper blade assembly. The upper and lower blade assemblies are coaxially arranged, and their blade holders are fitted with a clearance. The first and second output shafts of the drive assembly are connected to the lower and upper blade assemblies respectively to drive both blade assemblies to rotate simultaneously. This configuration ensures that, during operation, the connectors of the lower and upper blade assemblies block both the shaft holes of the first and second output shafts, effectively improving the problem of material entering the shaft holes to a certain extent compared to the technical solution of Patent 2 in the background art. However, the initial intention of this solution was to address the problem of food piling up and resulting in poor processing when the mixing components process food in the same direction, not to solve the problem of material easily entering the shaft hole. Specifically, this solution is not the optimal solution for preventing material from entering the shaft hole during high-speed meat grinding. Because the upper blade assembly is fitted onto the blade holder of the lower blade assembly with a gap, material can enter the gap between the bottom of the upper blade assembly's blade holder and the lower blade assembly's blade holder during operation. This causes the upper blade assembly to tilt, resulting in the connector of the upper blade assembly being tilted relative to the shaft hole of the second output shaft. This leads to uneven gaps between the outer peripheral wall of the connector and the inner wall of the shaft hole, meaning one side has a larger gap than the other. Material can still enter the shaft hole through the larger gap, making it easy to clean the shaft holes of both output shafts.

[0075] In summary, existing technologies all suffer from the technical problem that, at high speeds, material can easily enter the gap between the nested dual output shafts, or that a large redundant gap remains between the outer peripheral wall of the male connector of the meat grinder and the inner peripheral wall of the second output shaft, making it difficult to clean. Furthermore, all technologies rely on a two-stage planetary speed assembly to provide two speed outputs. Therefore, the core idea of ​​this application is to achieve two speed outputs (such as high-speed meat grinding and low-speed dough grinding), not limited to a two-stage planetary speed assembly, while simultaneously solving the technical problem of existing technologies where material can easily enter the gap between the nested dual output shafts, or that a large redundant gap remains between the outer peripheral wall of the male connector of the meat grinder and the inner peripheral wall of the second output shaft, making it difficult to clean.

[0076] Therefore, this application provides a core solution: a food processing machine includes a main unit 1, which can drive a first output component and a second output component respectively. The first output component is used to output a first rotational speed, and the second output component is used to output a second rotational speed. The first output component also includes a first output shaft 43 rotating at the first rotational speed, and the second output component includes a second output frame 5 rotating at the second rotational speed. The second output frame 5 has a receiving cavity 51, and the front end of the first output shaft 43 extends into the receiving cavity 51. A transmission head 6 is housed in the receiving cavity 51 and sleeved on the outside of the first output shaft 43. The first output shaft 43 is provided with a first engagement part 432 that engages with the transmission head 6. The inner peripheral wall of the receiving cavity 51 is provided with a first engagement part 432 that engages with the first output shaft 43. The transmission head 6 engages with a second engagement portion 512, with the first engagement portion 432 and the second engagement portion 512 axially offset. The transmission head 6 can move axially between the first engagement portion 432 and the second engagement portion 512 to selectively engage with either the first engagement portion 432 or the second engagement portion 512. A stirring member 3 is connected to the transmission head 6 and can be housed within the processing cup 2. The stirring member 3 drives the transmission head axially to engage with either the first engagement portion or the second engagement portion. In other words, the first output shaft 43 or the second output frame 5 drives the stirring member 3 through the transmission head 6. Generally, under no-load conditions, the first rotational speed is approximately between 2500 r / min and 3000 r / min, and the second rotational speed is approximately between 300 r / min and 500 r / min.

[0077] Furthermore, this application further arranges the transmission head 6, the receiving cavity 51, and the first output shaft 43 coaxially, ensuring good alignment and preventing tilting when the transmission head 6 moves axially within the receiving cavity 51. This guarantees operational stability and avoids the problem of switching jams or failures due to tilting when switching between the first rotational speed engaged with the first meshing part and the second rotational speed engaged with the second meshing part. More importantly, this application presents a solution completely opposite to prior art: the front end of the first output shaft extends into the receiving cavity, and the space for the transmission head to move is only the depth of the receiving cavity, rather than requiring the concave cavity of the first output shaft and the receiving cavity of the second output shaft to be vertically connected to form a deeper moving cavity, as in the prior art. This significantly shortens the axial movement distance of the moving head, reduces the sway of the cantilever end of the moving head within the receiving cavity, and facilitates movement between the first and second meshing parts. Moreover, the moving head in this application is radially limited by the inner wall of the receiving cavity and the inner and outer sleeves of the first output shaft, making its axial movement smoother.

[0078] In this solution, by setting a first output component and a second output component, respectively equipped with a first output shaft 43 having a first rotational speed and a second output frame 5 having a second rotational speed, a structural basis is provided for the food processing machine to achieve two rotational speed outputs as in the prior art. Specifically, this application sets a transmission head 6 that can move axially to engage with the first meshing part 432, so that the transmission head 6 drives the stirring component 3 to move at the first rotational speed; the transmission head 6 can also move axially to engage with the second meshing part 512, so that the transmission head 6 drives the stirring component 3 to rotate at the second rotational speed. Compared with the prior art, which requires two output shafts (equivalent to two transmission heads) to be adapted to the meat grinder and the dough mixing rod respectively to achieve high and low speed outputs, this application only requires the axial movement of a single transmission head (i.e., a single output shaft) to achieve two output speeds (i.e., one high speed and one low speed). There are no restrictions on whether the stirring component is single or multiple, whether the processing cup is single or multiple, or whether the reduction gearbox is a single-stage planetary speed assembly or a two-stage planetary speed assembly. In other words, existing technologies rely on a two-stage planetary gearbox with two output shafts (equivalent to two transmission heads) to achieve high and low speed output. This application overcomes this technical bias of the prior art and achieves high and low speed output using only a single transmission head.

[0079] It should be noted that in this invention, "single transmission head" means that regardless of the number of stirring components, the connector of each stirring component can only be inserted into a unique mounting position on the transmission head. For example, when the connector 34 is a plug-in post, i.e., a male connector 34, the bottom of the transmission head 6 is provided with a downward-opening transmission hole 67. The plug-in post and the transmission hole are conformally matched, meaning that regardless of the number of stirring components, the transmission hole 67 is unique. When there are multiple stirring components, it is preferable that the structure of the part of the connector 34 of the stirring components inserted into the transmission hole 67 is consistent, and even the connectors of the exposed parts of the stirring components are consistent, improving manufacturing consistency.

[0080] More importantly, in this solution, regardless of whether there is one or multiple agitators, after the agitator connector is connected to the transmission head, there is only a small gap at the point where the two are plugged in. Generally speaking, the meshing gap is about 0.1mm. This eliminates the large gap between the inner and outer output shafts in the existing technology, or the redundant gap between the meat grinder connector and the second output shaft hole in the stepped shaft hole solution. Therefore, it solves the problem that materials can easily enter the above two gaps, making it difficult to clean the two gaps.

[0081] Specifically, regarding the specific structure of the first output component and the second output component of the host, this utility model provides two preferred embodiments:

[0082] In a preferred embodiment, the solution is as follows: Given that the food processing machine employs a two-stage planetary reduction gear assembly to provide two output speeds to meet the different processing requirements of high-speed (e.g., meat grinding) and low-speed (e.g., dough kneading), the solution further addresses the technical problem in the prior art where, at high speeds, materials easily enter the gap between the nested double output shafts, or where a large redundant gap remains between the outer peripheral wall of the male connector of the meat grinder and the inner peripheral wall of the second output shaft, making cleaning difficult. This also ensures smooth axial movement of the transmission head during speed switching.

[0083] This solution employs a two-stage planetary reduction gear assembly in the food processing machine to provide two output speeds, respectively meeting the different processing requirements of the first speed (e.g., high-speed meat grinding) and the second speed (e.g., low-speed dough kneading). The first speed is lower than the direct output speed of the motor, reducing grinding noise during high-speed grinding. The second speed, after two-stage reduction, provides greater torque compared to a solution where the motor is directly reduced to the second speed, making it more suitable for low-speed, high-torque processing conditions such as dough kneading. Furthermore, the overall speed ratio is shared by both output components (i.e., the two-stage reduction gear assembly), which allows for a smaller radial dimension of the fixed gear ring housing the planetary gears, thereby reducing the radial dimension of the main unit.

[0084] For details, please refer to Figures 1 to 19The food processing machine of this application is a dough mixer and meat grinder, including a main unit 1. The main unit 1 is equipped with a motor 11 and a reduction gearbox 12 that is driven and connected to the output shaft 111 of the motor 11. The reduction gearbox 12 includes a primary planetary reduction assembly 121 and a secondary planetary reduction assembly 122 that are driven and connected. The first output assembly is the primary planetary reduction assembly 121, which includes a primary sun gear 1212 that is driven and connected to the output shaft 111 of the motor 11, a plurality of primary planetary gears 1211 that mesh with the outer periphery of the primary sun gear 1212, a first output frame 4 located at the bottom of the plurality of primary planetary gears 1211 and moving with the primary planetary gears 1211, and a primary upper support 1213 covering the primary planetary gears 1211 and the primary sun gear 1212. The primary upper support 1213 is axially locked to the first output frame 4 to limit the primary planetary gears 1211 and the primary sun gear 1212 between them. The second output assembly is a two-stage planetary reduction assembly 122, including multiple second-stage planetary gears 1221, a second output frame 5 located at the bottom of the second-stage planetary gears 1221 and moving with them, and a second-stage upper support 1222 covering the multiple second-stage planetary gears 1221. The second output frame 5 includes a plate supporting the multiple second-stage planetary gears 1221 and a second output shaft extending from the bottom of the plate toward the output end of the main unit 1. The second output shaft has a receiving cavity 51, i.e., the receiving cavity 51 is located in the second output frame. The first output frame 4 includes a frame 41 supporting the multiple first-stage planetary gears 1211 and a sun gear, and a first output shaft extending toward and meshing with the second-stage planetary gears 1221. The first output shaft extends into the receiving cavity 51.

[0085] The food processing machine of this application also includes a processing cup 2 located below the main unit 1 and a stirring component 3 installed inside the processing cup 2. This design does not specifically limit the number of processing cups 2 or the type or number of stirring components 3. Furthermore, the main unit has a base through hole 112 for the transmission head 6 to extend or be exposed. The transmission head 6 is axially movably disposed within the receiving cavity 51 and is inserted into the first output shaft. The bottom end of the transmission head 6 is connected to the connecting head 34 at the top of the stirring component 3 to achieve transmission. When kneading dough, the transmission head 6, under the pressure of the connecting head 34, moves axially inward until its outer peripheral wall engages with the second meshing part 512, and the transmission head 6 rotates at a second speed in a low-speed output state. When mincing meat, the transmission head 6, under the pressure of the connecting head, moves axially inward until its outer peripheral wall disengages from the second meshing part 512 and engages with the first output shaft 43 at the insertion point, and the transmission head 6 rotates at a first speed in a high-speed output state.

[0086] It should be noted that the connection between the transmission head 6 and the connector head 34 in this utility model refers to the following: when the connector head 34 is a male connector (i.e., a plug-in pin), the bottom of the transmission head 6 is provided with a downward-opening transmission hole 67. The plug-in pin and the transmission hole 67 are conformally matched, with a radial clearance of approximately 0.1 mm. Of course, the two can also be connected by threads. For example, see reference... Figures 1 to 4 When the plug is a straight cylindrical structure, the transmission hole 67 is also straight cylindrical; of course, when the plug is a stepped type with a smaller top and a larger bottom, the transmission hole 67 is also stepped; other shapes will not be described in detail here.

[0087] The multifunctional food processing machine provided by this utility model provides a mechanical structural foundation for the whole machine to achieve high-speed output through the first-stage planetary reduction assembly and low-speed output through the second-stage planetary reduction assembly 122 by setting a two-stage planetary reduction assembly. Specifically, this application sets a single transmission head 6 to move axially to achieve transmission engagement between the outer peripheral wall of the transmission head 6 and the second meshing part 512, and to disengage the transmission engagement between the outer peripheral wall of the transmission head 6 and the inner peripheral wall of the second meshing part 512, while engaging with the first output shaft 43. Compared with the prior art, which requires two output shafts (equivalent to two transmission heads 6) to achieve high and low speed output by respectively adapting and installing with the meat grinder 31 and the dough mixing rod 32, this application only requires the axial movement of a single transmission head 6 to achieve high and low speed output (i.e., the first speed and the second speed).

[0088] In another preferred embodiment, the solution is to use a single-stage planetary reduction gear instead of a two-stage planetary reduction gear to achieve the first and second output speeds. Specifically, the main unit contains a motor, and the first output shaft of the first output component is the output shaft of the motor; the second output component includes multiple planetary gears, the output shaft of the motor is provided with external meshing teeth to drive the multiple planetary gears, and the second output is mounted on the bottom of the multiple planetary gears and moves with the planetary gears.

[0089] Compared to solutions that use two-stage reduction to achieve the first and second speeds, this design only requires one set of planetary gears and a sun gear. The assembly process is simple, making it suitable for designs with a flat main unit, such as those used in stand mixers. Of course, if a flat main unit design is not desired, a variable frequency brushless motor can be preferred to optimize the main unit's size, making it suitable for conventional top-mounted dough mixers and meat grinders.

[0090] Furthermore, based on the configuration of a positioning part at the bottom of the processing cup 2, with the bottom of the stirring component cooperating with the positioning part and the top of the stirring component connected to the transmission head, this invention further considers how to achieve, under one working condition, transmission head engaging with the first meshing part 432; and under another working condition, transmission head engaging with the second meshing part 512. Moreover, it is not limited to whether the stirring component 3 and the processing cup 2 are single or multiple for the stirring component 3. This invention provides five core solutions:

[0091] Solution 1: The core principle is to install a first positioning part and a second positioning part at the bottom of the processing cup, which mate with the bottom of the stirring component. It is essential to ensure that the heights of the first and second positioning parts from the inner bottom surface of the processing cup are different. Specifically, the stirring component is fitted with the first positioning part so that the pusher head moves axially to engage with the first meshing part 432. The stirring component is also fitted with the second positioning part so that the pusher head moves axially to engage with the second meshing part 512.

[0092] Regarding Solution 1 above, the present invention can provide at least the following specific embodiments:

[0093] Example 1:

[0094] The processing cup is a single unit, while the mixing components consist of two units.

[0095] The positioning part of the processing cup can be a stepped shaft-type positioning post 21, with the upper half of the positioning post being the first positioning part and the lower half being the second positioning part. The bottom of the first stirring member is provided with a first mating hole that engages with the first positioning part, and the bottom of the second stirring member is provided with a second mating hole that engages with the second positioning part. There are no specific limitations on the height of the first and second stirring members; it is only necessary to limit the height difference between the top of the two stirring members and the inner bottom surface of the processing cup after they are engaged with the first and second positioning parts, respectively, to be equal to the axial movement distance of the transmission head between the first and second rotational speeds.

[0096] Example 2:

[0097] There are two processing cups, including a first processing cup and a second processing cup, and a single stirring component. A first positioning part is located inside the first processing cup, and a second positioning part is located inside the second processing cup, and both the first and second positioning parts are positioning columns.

[0098] The bottom of the stirring component 3 is provided with a mating hole adapted to the first positioning part and the second positioning part. The depth of the mating hole is between the heights of the first positioning post and the second positioning post. The heights of the first positioning post and the second positioning post are the plumb bob heights between their top surfaces and the inner bottom surface of the processing cup. In this embodiment, the same stirring component 3 can be used for both mincing meat and kneading dough. The shape of the positioning part of the processing cup 2 can be controlled to drive the stirring cup to apply two different pushing forces to the transmission head 6, thereby enabling the transmission head 6 to have two different sliding distances. Compared to the prior art solution that requires two different connecting heads 34, the stirring component 3 offers better consistency.

[0099] For details, please refer to Figure 16 and 17 , Figure 16 The diagram shown is a structural schematic of the first processing cup 2 containing the meat grinder 31. Figure 17 This is a schematic diagram of the structure for housing the same meat grinder 31 within the second processing cup 2. The height h5 of the positioning post 21 in the first processing cup 2 is greater than the height h6 of the positioning post 21 in the second processing cup 2, i.e., h5 > h6. A bushing is provided at the bottom of the blade shaft 33 of the meat grinder 31. A positioning hole with its lower opening adapted to the positioning post 21 is provided inside the bushing. The value of h5 is also greater than the depth of the positioning hole, so that when the meat grinder 31 is installed inside the first processing cup 2, there is a certain distance between the bottom of the blade shaft 33 of the meat grinder 31 and the bottom of the cup. That is, the meat grinder 31 is raised as a whole by the positioning post 21, thereby... Figure 16 The height H5 of the top of the meat grinder 31 connector 34 from the inner bottom surface of the processing cup 2 is greater than... Figure 17 The height H6 between the top of the connecting head 34 of the meat grinder 31 and the inner bottom surface of the processing cup 2, i.e., H5 > H6. Therefore, Figure 16 The connecting head 34 of the meat grinder 31 can push the transmission head 6 to a greater depth of axial movement to engage with the first output shaft, achieving a high-speed output state. Figure 17The connecting head 34 of the meat grinder 31 can push the transmission head 6 to a second depth with limited axial movement and engage with the receiving cavity 51 to achieve a low-speed output state. This solution requires only one blade and one transmission head 6 to meet the high-speed processing needs of the transmission head 6 matching the first output shaft of the first output frame 4 and the low-speed processing needs of the transmission head 6 matching the receiving cavity 51 of the second output frame 5. There is no need to replace the blade, and multiple processing cups 2 can be used as receiving cups after mixing, eliminating the need to scrape the material into a bowl. For example, when making dumpling filling at home, the mixing element can first be matched with the cup of the high positioning column 21 to achieve a high-speed output state for grinding meat. After grinding, the meat is stored in the first processing cup 2. Then, the meat grinder 31 is removed and placed in the second processing cup 2 of the low positioning column 21 to achieve a low-speed output state for grinding vegetables. The vegetables are then poured into the first processing cup 2 for mixing. Compared to solutions with only a single processing cup 2, which require pouring the minced meat into a bowl, cleaning the processing cup 2, and replacing another mixing element after grinding, this solution is much more convenient.

[0100] Example 3:

[0101] The difference from Example 2 is that there are two stirring components, including a first stirring component and a second stirring component.

[0102] The first stirring component is adapted to the first positioning part, and the second stirring component is adapted to the second positioning part. It is sufficient to limit the height difference between the distance between the first stirring component and the first positioning part (the distance from the bottom surface of the first processing cup to the distance between the second stirring component and the bottom surface of the second processing cup), to be equal to the axial movement distance of the transmission head between the first and second rotational speeds.

[0103] It should be noted that in the above embodiments, to solve the problem of difficult cleaning of the bottom positioning hole of the stirring component 3, the existing meat grinder has a positioning groove (not shown in the attached figure) recessed towards the bottom of the processing cup 2. The positioning groove covers the bottom of the stirring component's cutter shaft 33, thereby positioning the stirring component. Therefore, if there are two processing cups, when the stirring component 3 is matched and installed with processing cups 2 with different depths of positioning grooves, the height of the top of the connecting head 34 of the stirring component 3 from the inner bottom surface of the processing cup 2 when the stirring component 3 is matched with the deeper positioning groove is less than the height of the top of the connecting head 34 of the stirring component 3 from the inner bottom surface of the processing cup 2 when the stirring component 3 is matched with the more advanced positioning groove, that is, different overall heights are achieved, which can drive the transmission head 6 to achieve different processing states. If there is only one processing cup, the positioning groove can be a stepped positioning groove, with the deeper one being the second positioning part and the shallower one being the first positioning part. When the stirring component is matched and installed with positioning grooves of different depths, the stirring component can also achieve different overall heights, which can drive the transmission head to achieve different processing states.

[0104] Solution 2: The core principle is based on the top of the stirring component 3 being connected to the transmission head 6, and the bottom being connected to the positioning part at the bottom of the processing cup. The stirring component includes a first stirring component and a second stirring component, with the heights of the first stirring component and the second stirring component being different. Specifically, after the first stirring component is adapted to the processing cup, it is used to drive the transmission head axially to engage with the first meshing part 432. After the second stirring component is adapted to the processing cup, it is used to drive the transmission head axially to engage with the second meshing part 512.

[0105] It should be noted that, under this solution, it is only necessary to specify that when the first and second stirring components are respectively installed in the processing cup 2, there is a height difference between the top surface of the corresponding stirring component and the bottom surface of the inner surface of the processing cup 2. This height difference is equal to the axial movement distance of the transmission head 6 when the first speed and the second speed are switched. In other words, the technical idea of ​​this solution is to achieve different output speeds by controlling the different heights of the different stirring components 3 installed in the processing cup 2, thereby driving the transmission head 6 to move axially a different distance.

[0106] Specifically, the factors affecting the height of the mixing components mainly include the cutter shaft height and the height of the connector exposed relative to the top surface of the cutter shaft. It is necessary to ensure that at least one of the "cutter shaft height" and the "height of the connector exposed relative to the top surface of the cutter shaft" is different to achieve different heights for the two mixing components. There is no need to specify whether the processing cup has a "single processing cup with a single positioning part," "a single processing cup with two positioning parts," or "two processing cups each with two positioning parts." The key is to ensure that the heights of the limiting part after engaging with the first and second mixing components are not identical, and that the height difference between the two is equal to the axial movement distance of the transmission head 6 when switching between the first and second speeds.

[0107] Regarding the above-mentioned solution 2, this utility model can provide at least the following two specific embodiments:

[0108] Example 1:

[0109] The first and second agitators, which are of different heights, are based on the different heights of the cutter shaft. The two agitators are matched with the same processing cup, and the bottom of the processing cup is a single positioning post, which serves as a positioning part.

[0110] refer to Figure 12 and Figure 13 , Figure 12 This is a schematic diagram of the structure of the meat grinder 31 installed inside the processing cup 2. Figure 13The diagram shows the structure of the dough-mixing rod 32 installed in the same processing cup 2. Except for the height of the blade shaft 33, the height of the other connectors 34 exposed relative to the blade shaft 33 and the depth of the positioning hole at the bottom of the blade shaft 33 are the same for the meat grinder 31 and the dough-mixing rod 32. Furthermore, the connectors 34 of the dough-mixing rod 32 and the meat grinder 31 are both male connectors 34. Figure 12 In the process, the height of the top of the meat grinder 31 connector 34 from the bottom surface of the processing cup 2 is H1, and the height of the top surface of the meat grinder 31 shaft 33 from the bottom surface of the processing cup 2 is h1. Figure 13 In the process, the height of the top of the connecting head 34 of the dough mixing rod 32 from the inner bottom surface of the processing cup 2 is H2, and the height of the top surface of the cutter shaft 33 of the dough mixing rod 32 from the inner bottom surface of the processing cup 2 is h2. Where H1 > H2, h1 > h2, and the difference between h1 and h2 is equal to the axial sliding distance of the transmission head 6 when switching between high and low speed output states (i.e., when switching between the first and second speeds), to ensure that the two stirring components 3 can push the transmission head 6 to slide to the designated position.

[0111] Example 2:

[0112] The first and second agitators, which are of different heights, rely on the different heights of the connector exposed relative to the top surface of the cutter shaft. The two agitators are matched with the same processing cup, and the bottom of the processing cup is a single positioning post, which serves as the positioning part.

[0113] Understandable, for reference Figure 14 and Figure 15 , Figure 14 This is a schematic diagram of the structure of the meat grinder 31 installed inside the processing cup 2. Figure 15 The diagram shows the structure of the dough-mixing rod 32 installed in the same processing cup 2. Except for the difference in the height of the connector 34 exposed relative to the cutter shaft 33, the height of the cutter shaft 33 and the depth of the positioning hole at the bottom of the cutter shaft 33 are the same for the meat grinder 31 and the dough-mixing rod 32. The connectors 34 of the dough-mixing rod 32 and the meat grinder 31 are both male connectors 34. Figure 14 In the process, the height of the top of the meat grinder 31 connector 34 from the bottom surface of the processing cup 2 is H3, and the height of the top surface of the meat grinder 31 blade shaft 33 from the bottom surface of the processing cup 2 is h3. Figure 15 In the process, the height of the top of the connecting head 34 of the dough mixing rod 32 from the inner bottom surface of the processing cup 2 is H4, and the height of the top surface of the cutter shaft 33 of the dough mixing rod 32 from the inner bottom surface of the processing cup 2 is h4. Wherein, H3 > H4, h3 > h4, and the difference between h3 and h4 is equal to the sliding distance of the axial movement of the transmission head 6 when the high and low speed output states of the transmission head 6 are switched.

[0114] It is understandable that, in addition to embodiments 1 and 2, the first and second stirring components with different heights can be matched with two processing cups respectively, or the first and second stirring components with different heights can be matched with a single processing cup, but the processing cup has a first positioning part and a second positioning part with different heights. This will not be elaborated further in this article.

[0115] Solution 3:

[0116] In this embodiment, both the stirring element 3 and the processing cup 2 are single units. The processing cup contains only a single positioning part, while the connector of the stirring element 3 is retractable, allowing the top of the stirring element to be at different heights from the bottom surface of the processing cup. This solution achieves two different speed operating conditions with only one stirring element and one processing cup, resulting in lower manufacturing costs, greater flexibility, and solving the problem of difficulty in storing multiple cups or stirring elements.

[0117] Specifically, the same mixing element 3 is used for both meat grinding and dough kneading. The connecting head 34 of the mixing element 3 can be extended to both long and short positions. Therefore, it is not necessary to limit whether the positioning part of the processing cup is a single positioning part or two positioning parts. The extension and retraction can be achieved by connecting the connecting head 34 to the cutter shaft 33 of the mixing element 3 through a threaded connection, or by using different latches at different depths for limiting, which will not be detailed here. For example, with the long connecting head 34, the transmission head 6 can be pushed to slide a larger distance until a high-speed output state is reached, while with the short connecting head 34, the transmission head 6 can be pushed to slide a smaller distance until a low-speed output state is reached.

[0118] Solution 4:

[0119] In this design, two processing cups are used, with the first and second processing cups having different heights. The number of mixing components is not limited; only the overall height of the mixing components within the different processing cups must be consistent, and the top of the mixing component must be at least higher than the top of the shorter processing cup. This design, based on the different heights of the two processing cups, can accommodate processing conditions with different capacities. For example, a larger processing cup is needed for kneading dough, while a relatively smaller one can be used for mincing meat.

[0120] In a preferred embodiment, reference is made to Figure 18 and Figure 19 , Figure 18 This is a schematic diagram of the structure of the dough mixing rod 32 installed inside the first processing cup 2. Figure 19 A schematic diagram of the structure in which the same kneading rod 32 is installed inside the processing cup 2 of the day. Figure 18 In the process, the height of the top of the first processing cup 2 from the inner bottom surface of the first processing cup 2 is H7, and the height of the top surface of the connector 34 of the face bar 32 from the inner bottom surface of the first processing cup 2 is h7. Figure 19In this design, the height of the top of the second processing cup 2 from its inner bottom surface is H8, and the height of the top surface of the connecting head 34 of the same mixing rod 32 from its inner bottom surface is h8, where H7 < H8 and h7 = h8. This results in different heights of the exposed portion of the mixing rod 32 relative to the through hole of the cup lid 22, allowing the drive head 6 to slide to two different positions, achieving high-speed and low-speed output respectively. Alternatively, the cups could be set to a uniform height, and the shape of the cup lid could be changed to alter the exposed height of the mixing component relative to the through hole of the lid, thus driving the drive head 6 to slide to two different positions, achieving high-speed and low-speed output respectively.

[0121] Solution 5:

[0122] The core of this solution is to set up a mixing component consisting of a first mixing component and a second mixing component of the same height. The positioning holes at the bottom of the cutter shafts of the first and second mixing components have different depths. The first mixing component, after being adapted to the positioning part of the processing cup, is used to drive the transmission head axially to engage with the first meshing part 432. The second mixing component, after being adapted to the positioning part of the processing cup, is used to drive the transmission head axially to engage with the second meshing part 512. The number of processing cups and the shape of the positioning parts inside the processing cups can be specifically set according to actual needs. This solution does not require damaging the surface structure of the mixing components. When making technical modifications, there is no need to re-open the mold; only the corresponding depth needs to be excavated within the positioning holes of the existing mixing components, resulting in low technical modification costs.

[0123] In a preferred embodiment, the first stirring component is a meat grinder, the second stirring component is a dough mixer, and there is one processing cup with a positioning post inside. The depth of the positioning hole at the bottom of the cutter shaft 33 of the meat grinder 31 is greater than the depth of the positioning hole at the bottom of the cutter shaft 33 of the dough mixer 32, but less than the height of the positioning post from the bottom surface of the processing cup. The depth of the positioning hole at the bottom of the cutter shaft 33 of the dough mixer 32 is not less than the height of the positioning post from the bottom surface of the processing cup. The height of the remaining cutter shafts 33 and the height of the connectors 34 relative to the exposed cutter shafts 33 are all the same, and the connectors 34 of the dough mixer 32 and the meat grinder 31 are both male connectors 34. The depth difference between the two positioning holes is equal to the sliding distance of the axial movement of the transmission head 6 when switching between high and low speed output states, so as to realize the high-speed output state and the low-speed output state respectively.

[0124] The core guiding principle of the above five solutions is that, after the mixing element and the processing cup are adapted, the height of the top surface of the mixing element connector from the bottom surface of the processing cup has two possibilities: at the first height, the mixing element connector 34 can be driven to move axially to engage with the first meshing part 432; at the second height, the mixing element connector 34 can be driven to move axially to engage with the second meshing part 512. In this utility model, when the mixing element 3 is a dough-making rod 32, there is no need to set a bowl-shaped opening and a vent hole. The connector 34 of the dough-making rod 32 and the connector 34 of the meat grinder 31 can both be solid convex pillar structures (i.e., male connector 34), which enhances the ease of cleaning of the mixing element 3 and avoids flour accumulation on the top of the connector 34 of the dough-making rod 32 when adding powder. Meanwhile, in this solution, reference... Figures 1 to 4 and Figures 12 to 19 In this design, only one transmission head 6 is provided, and only one transmission hole 67 is provided to mate with the connector 34. Regardless of whether there is one or more stirring components 3, as long as the connector 34 of the stirring component 3 is connected to the transmission hole 67 of the transmission head 6, there is only a small gap at the point of insertion between the two. Generally speaking, the meshing gap is about 0.1mm. This eliminates the large gap between the inner and outer output shafts in the prior art, or the redundant gap between the connector 34 of the meat grinder 31 and the second output shaft hole in the stepped shaft hole design. Therefore, it solves the problem that materials can easily enter the above two gaps, making it difficult to clean the two gaps.

[0125] In another preferred embodiment of this utility model, the bottom of the processing cup does not require a positioning part, meaning the stirring element is suspended relative to the bottom of the processing cup, such as in a soymilk maker or a portable juicer. In this design, the stirring element and the transmission head are threaded together, and the tightening direction is consistent with the rotation direction of the stirring element. This allows the stirring element to move upwards during the material mixing process when there is a large amount of material to crush and a heavy load, driving the transmission head to engage with the first engagement part 432, achieving rapid crushing of the ingredients at a high first speed. When the material is nearly crushed and the load is light, the stirring element moves downwards due to its own weight or the compression spring within the cavity, driving the transmission head downwards to engage with the second engagement part 512, achieving relatively low rotation speed for mixing the ingredients, effectively reducing motor noise. In other words, this design allows for dynamic adjustment of the rotation speed according to the material conditions during operation, resulting in more uniform and efficient crushing of ingredients while reducing operating noise.

[0126] In a preferred embodiment of this utility model, reference is made to Figures 1 to 5 and Figure 11It also includes a compression spring 7 for pre-pressing the transmission head axially downward against the bottom of the receiving cavity, located within the cavity. The compression spring 7 allows the transmission head to automatically return to its initial state when there is no stirring element pushing it from the bottom; the spring's rebound force ensures the transmission head is pre-pressed axially downward against the bottom of the cavity, effectively preventing jamming that could occur if the transmission head relies solely on its own weight without the spring. During the reset process, if water or liquid food accidentally enters between the transmission head 6 and the receiving cavity 51, the reset force will remove it, preventing residue. After reset, the outer wall of the transmission head 6 can be cleaned. This process can be repeated multiple times: "cleaning the outer wall of the transmission head 6 – pressing the transmission head 6 – automatic reset of the transmission head 6 removing dirt," effectively cleaning the gap between the outer wall of the transmission head 6 and the receiving cavity 51. It can also clean the gap between the base through hole 112 and the outer wall of the transmission head 6. Meanwhile, the axial pre-compression of the transmission head by the compression spring helps to avoid collision noise or wear between the transmission head and the side wall of the receiving cavity during the transportation or handling of the food processing machine, thus extending the service life of the transmission head. Furthermore, during the operation of the transmission head engaging with the first meshing part 432 or the second meshing part 512, it prevents the transmission head from immediately moving axially and deviating from its normal operating state when the machine vibrates or shakes due to human factors.

[0127] Specifically, this utility model provides two specific embodiments based on different settings of the compression spring 7:

[0128] Example 1: One end of the compression spring is pressed against the first output shaft, and the other end is pressed against the transmission head, so that the axial force of the compression spring acts directly on the two components closest to the central axis of the receiving cavity. When the connector is pushed axially downward, the connector is more stable.

[0129] For details, please refer to Figures 1 to 5 The first output shaft and the transmission head 6 are inserted and fitted to form a mounting cavity. Specifically, the bottom of the first output shaft forms an upper fitting cavity with a lower opening, and the top of the transmission head 6 forms a lower fitting cavity with a higher opening. The upper and lower fitting cavities are inserted and enclosed to form the mounting cavity. The compression spring 7 is disposed in the mounting cavity, and the top wall of the mounting cavity is the limiting part.

[0130] The compression spring 7 is positioned within the mounting cavity formed by the insertion and mating of the first output shaft and the transmission head 6, with one end of the compression spring 7 abutting against the first output shaft and the other end abutting against the connector 34. The mounting cavity provides a sealed and limiting function for the compression spring 7, and the sidewalls of the mounting cavity provide good axial guidance for the compression spring 7, thus assisting in preventing the transmission head 6 from sliding off-center. Furthermore, the size of the compression spring 7 can be relatively small, reducing costs. Preferably, the compression spring 7 is a regular spring.

[0131] It is understandable that the front end of the first output shaft 43 can also be set as a solid structure, that is, only the top of the transmission head has a mating cavity with an opening at the top. After the front end of the first output shaft extends into it, it covers the top of the mating cavity to form a mounting cavity. The compression spring is limited to the bottom wall of the first output shaft and the bottom wall of the mating cavity. Of course, refer to Figure 4 The first output shaft includes a first engagement portion 432 and a first guide portion 433 located below the first engagement portion 432 and radially reduced to form a step with the stepped surface facing downward at the connection between the first engagement portion 432 and the first guide portion 433. A compression spring is sleeved on the outer periphery of the first guide portion 433 and axially limited between the stepped surface and the bottom wall of the mating cavity.

[0132] Preferably, the first output frame 4 includes a frame 41 and an annular wall 42 extending from the bottom of the frame 41 toward the secondary planetary gear 1221, which is hollow inside and open at the bottom. A first output shaft 43 is embedded in the annular wall 42, and the bottom of the first output shaft 43 forms an upper cavity with an open lower end. Generally, the first output frame 4 is made of plastic, while the first output shaft 43 needs to have high rigidity and strength to stably drive the secondary planetary gear 1221 and the transmission head 6 to rotate. Therefore, setting the first output shaft 43 and the annular wall 42 separately is more advantageous for making only the first output shaft 43 of metal, resulting in lower costs.

[0133] Of course, the first output frame 4 can also be made of metal, and the annular wall 42 can be used directly as the first output shaft 43. This eliminates the need for the installation of the first output shaft 43 and the annular wall 42, and ensures the stability of the connection between the first output shaft 43 and the frame 41, thereby improving the stable transmission of the annular wall 42 to drive the secondary planetary gear 1221 and the transmission head 6.

[0134] Example 2: A pressure plate 513 is provided above the receiving cavity. The first output shaft 43 passes through the pressure plate 513, and the compression spring 7 is sleeved on the outside of the first output shaft 43, with one end abutting against the pressure plate 513 and the other end abutting against the transmission head 6. (Reference) Figure 11The device also includes a pressure plate 513 covering the top of the receiving cavity 51 and surrounding the outer periphery of the first output shaft 43. A compression spring 7 is sleeved on the outer periphery of the first output shaft 43 between the pressure plate 513 and the top of the transmission head 6. The top of the transmission head 6 is provided with a slot 66 located on the outer periphery of the mating cavity. The compression spring 7 is a spring, and the bottom of the spring extends into the slot 66 to fix the bottom end of the spring to the transmission head 6. The top of the spring can be separately connected to the pressure plate 513, or it can be glued to the pressure plate 513 or other fixing methods can be used. In this embodiment, there is no specific limitation. The top of the receiving cavity 51 is provided with a limiting ring groove for mounting the pressure plate 513, and a sliding groove for the axial movement of the transmission head 6 is located below the limiting ring groove.

[0135] In this embodiment, the compression spring 7 is disposed on the outside of the first output shaft 43, increasing its radial dimension and thus its elastic force, ensuring that the transmission head 6 is not jammed when automatically resetting by the compression spring 7. Simultaneously, since the compression spring 7 is sleeved on the outside of the first output shaft, it does not damage the internal structure of the first output shaft 43, ensuring the strength of the first output shaft 43 and improving the stability of the transmission head 6 driven by the cantilever end of the first output shaft. The pressure plate 513 serves both as the top limiting structure for the compression spring 7 and as a separator between the secondary planetary gear 1221 and the transmission head 6, effectively mitigating the problem of oil leakage from the planetary gear to the transmission head 6.

[0136] It should be noted that the sliding scheme of the transmission head 6 in this utility model can also omit the compression spring 7 to save costs. When the stirring component 3 is disengaged from the transmission head 6, such as when the main unit 1 is placed on the cup lid 22 and the cup lid 22 is installed on the processing cup 2, but the stirring component 3 is not placed inside the processing cup 2, the transmission head 6 can slide down along the sliding groove axially to the initial state by relying on its own gravity.

[0137] In one specific embodiment of this utility model, such as Figures 1 to 8 as well as Figure 11As shown, the first output shaft includes an annular wall 42 and a first output shaft 43 fitted into the annular wall 42. The first output shaft 43 includes a second-stage sun gear 431 that meshes with the second-stage planetary gear 1221, and a first engagement portion 432 located below the second-stage sun gear 431 and extending into the receiving cavity 51. The top of the transmission head 6 is provided with a mating cavity for the first engagement portion 432 to be inserted. The inner peripheral wall of the mating cavity is provided with internal meshing teeth that mesh with the first output shaft 43. The outer peripheral wall of the transmission head is also provided with external meshing teeth that mesh with the second engagement portion 512 of the receiving cavity. In this design, the first engagement portion 432 of the first output shaft 43 engages with the internal meshing teeth of the mating cavity, which allows the first output shaft to drive the transmission head to move at a first rotational speed and the inner peripheral wall of the receiving cavity to separate from the outer peripheral wall of the transmission head when the two are fully engaged. Conversely, when the second meshing part 512 of the receiving cavity engages with the external meshing teeth of the transmission head, the first output shaft can disengage from the mating cavity, and the second output frame can drive the transmission head to move at the second rotational speed. The transmission head has internal and external teeth radially separated. Compared to a scheme where two external meshing teeth with different radial dimensions are set on the outer side of the transmission head, there is no need to consider the need to avoid the other meshing tooth during axial movement of the transmission head. Furthermore, after the first meshing part 432 of the first output shaft engages with the mating cavity, a cavity remains for installing a compression spring, resulting in a more compact structure.

[0138] In this design, the first output shaft 43 has two meshing parts for multiple uses. The secondary sun gear 431 meshes with the secondary planetary gear 1221 to drive its rotation. The first meshing part 432 is located below the meshing section and extends into the receiving cavity 51. This allows the first output shaft 43 to drive the transmission head 6 to rotate at high speed when the mating cavity is in the position where it meshes with the first meshing part 432, thus separating the outer peripheral wall of the receiving cavity 51 from the transmission head 6. If the secondary sun gear 431 and the first meshing part 432 were two separate parts, on the one hand, they would need to be fixedly connected, increasing the installation steps; on the other hand, the alignment of the first meshing part 432 relative to the secondary sun gear 431 after installation would be difficult to guarantee, potentially leading to inaccurate alignment between the first meshing part 432 and the mating cavity. In this design, the two meshing sections are a single piece, eliminating the need for assembly and fixing. There is no installation tolerance between the two meshing sections, and the first meshing part 432 can be directly and precisely aligned with the mating cavity 61.

[0139] Further reference Figure 6 and Figure 7The first output shaft 43 also includes a first guide portion 433 located below the first meshing portion 432 and without meshing teeth. The mating cavity includes a first mating cavity 61 with internal meshing teeth and a second mating cavity 62 located below the first mating cavity. The transmission head 6 slides inward to the second mating cavity 62 and engages with the first guide portion 433 to achieve a low-speed output state.

[0140] The insertion of the first engaging portion 432 and the first mating cavity 61 of the transmission head 6 has achieved radial limiting between the first output shaft and the transmission head 6. The provision of the first guide portion 433, located below the first engaging portion 432 and without engaging teeth on its outer peripheral wall, further increases the insertion depth between the first output shaft and the transmission head 6, further enhancing the radial limiting effect. Specifically, when the first engaging part 432 is engaged with the first mating cavity 61 and the first guide part 433 is engaged with the second mating cavity 62, the transmission head 6 is in a high-speed output state. The higher the speed, the more severe the shaking of the transmission head 6 and the first output shaft. However, by engaging the first guide part 433 with the second mating cavity 62, the alignment of the transmission head 6 and the first output shaft is ensured on the basis of the engagement of the first engaging part 432 with the first mating cavity 61, and the shaking of the transmission head 6 and the first output shaft is reduced. When the first engaging part 432 disengages from engaging with the first mating cavity 61, part of the first guide part 433 is located in the first mating cavity 61, and the other part is still engaged with the second mating cavity 62, to prevent the transmission head 6 from disengaging from the radial limit of the first output shaft, and to always maintain the alignment of the transmission head 6 and the first output shaft.

[0141] In a preferred embodiment of this invention, the receiving cavity further includes a second guide portion 511 axially offset from the second engaging portion 512. The second guide portion 511 guides the axial movement of the transmission head. When the stirring member pushes the transmission head axially until the outer peripheral wall of the transmission head aligns with the second guide portion 511, the second output frame cannot drive the transmission head to rotate at the second speed, while the transmission head can engage with the first output shaft to rotate at the first speed. When the stirring member pushes the transmission head axially until the outer peripheral wall of the transmission head is axially offset from the second guide portion 511 and engages with the second engaging portion 512, the first output shaft 43 disengages from the transmission head, and the second output frame can drive the transmission head to rotate at a low speed. The second guide portion 511 mainly guides the transmission head during its axial movement within the receiving cavity to the process of switching between two engaging states, achieving precise switching.

[0142] Preferred, Reference Figure 9 and Figure 10The sliding groove inside the receiving cavity 51, along the output direction, sequentially includes a second guide portion 511 with no meshing teeth on its inner peripheral wall, a second engaging portion 512 with internal meshing teeth located below the second guide portion 511, and a third engaging portion 63 with external meshing teeth on the outer peripheral wall of the transmission head 6, which engages with the second engaging portion 512. In this design, by positioning the second guide portion 511 above the second engaging portion 512, when the transmission head 6 moves significantly towards the motor 11 and slides until its outer peripheral wall aligns with the second guide portion 511, the receiving cavity 51 cannot drive the transmission head 6 to rotate at low speed, while the transmission head 6 can engage with the first output shaft 43 to achieve high-speed output. When the second engaging portion 512 engages with the third engaging portion 63, the receiving cavity 51 can drive the transmission head 6 to rotate at low speed, and the first output shaft disengages from the transmission head 6.

[0143] Furthermore, the outer peripheral wall of the transmission head 6 is radially protruding with a limiting protrusion, and the inner peripheral wall of the receiving cavity 51 is provided with a limiting step to prevent the transmission head 6 from falling out of the receiving cavity. The limiting step is located below the limiting protrusion. Generally speaking, there are two situations in which the transmission head 6 is not subjected to an axially inward pushing force: (1) the transmission head 6 and the stirring component 3 are a separate plug-in structure, and the bottom of the stirring component 3 needs to be positioned by the positioning part of the processing cup 2 when the stirring component 3 is separated from the transmission head 6; (2) after the transmission head 6 and the stirring component 3 are fixedly connected, the lower end of the stirring component 3 is suspended. In the aforementioned two situations, if the transmission head is further subjected to a large elastic force of the compression spring, or is pulled by human force, or is accidentally dropped from the main unit, the transmission head 6 is likely to fall out of the receiving cavity 51. To this end, in this solution, a radially protruding limiting protrusion is provided on the outer periphery of the transmission head, so that the limiting protrusion and the limiting step of the receiving cavity 51 are axially limited, effectively preventing the transmission head 6 from falling out of the receiving cavity and causing damage to the machine.

[0144] In a preferred embodiment, the transmission head 6 further includes an output section 65 that is radially reduced relative to the third engagement portion 63 and can extend out of the receiving cavity 51 to cooperate with the stirring member 3. The inner peripheral wall of the receiving cavity 51 is provided with a limiting step 514 that supports the bottom surface of the third engagement portion 63 when the stirring member 3 is separated from the transmission head 6. The limiting step 514 is located at the bottom of the sliding groove. In this design, the outer peripheral wall of the transmission head 6 is configured to include the third engagement portion 63 and the output section 65 that is radially reduced relative to the third engagement portion 63 and can extend out of the receiving cavity 51 to cooperate with the stirring member 3. The limiting step 514 provides axial support at the connection between the third engagement portion 63 and the output section 65, preventing the transmission head 6 from axially disengaging. That is, the step at the connection between the third engagement portion 63 and the output section 65 is the limiting protrusion. In addition, the output section 65 is smaller than the third meshing part 63, which allows the size of the connector 34 of the stirring element 3 to be reduced accordingly. This not only saves costs, but also makes the fit gap between the connector 34 and the output section 65 misaligned between the blade shaft 33 of the stirring element 3 and the through hole of the cup lid 22, preventing food from easily seeping into the fit gap between the connector 34 and the output section 65 when the two gaps are aligned.

[0145] Understandably, the limiting protrusion can also be a radial protrusion located below the third engagement section 63, which can prevent the third engagement section 63 from directly contacting the limiting step and prevent the bottom engagement section of the third engagement section from being worn, thus affecting the axial insertion or disengagement with the first engagement section 432.

[0146] The specific working principle is as follows: when there is no stirring element 3 pressing down at the bottom of the transmission head 6, refer to... Figure 5 The compression spring 7 pushes the transmission head 6 downward along the sliding groove of the receiving cavity 51 to the initial position. In the initial position, the transmission head 6 protrudes from the base of the main unit 1, and the bottom of the third engagement portion 63 of the transmission head 6 abuts against the limiting step 514. The third engagement portion 63 of the transmission head 6 and the second engagement portion 512 are in a transmission engagement state. Then, refer to Figure 1 and Figure 2 When the mixing element 3 is a dough-mixing rod 32, and the dough-mixing rod 32 is inserted into the processing cup 2 and engaged with the transmission hole 67 of the transmission head 6, the transmission head 6 does not need to slide axially inward, i.e., the sliding distance is zero, thus achieving low-speed rotation of the dough-mixing rod 32. Preferably, in this embodiment, the length of the external meshing teeth of the third meshing part 63 is greater than the length of the internal meshing teeth of the second meshing part 512. This ensures that even if there is a manufacturing tolerance in the overall height of the dough-mixing rod 32 during production, resulting in a slight deviation in the axial movement distance of the transmission head 6, the third meshing part 63 can still engage with the third meshing part 63 at a high degree. (The text then continues with a reference to a different embodiment.) Figure 3 and Figure 4The dough-mixing rod 32 is removed from the processing cup 2 and inserted into the meat grinder 31. The overall height of the meat grinder 31 after being inserted into the processing cup 2 is higher than that of the dough-mixing rod 32 after being inserted into the processing cup 2. Under the pressing action of the connecting head 34 of the meat grinder 31, the connecting head 34 slides axially until the third engaging part 63 disengages from the second engaging part 512, that is, it moves until the third engaging part 63 of the transmission head 6 aligns with the second guide part 511; and, inside the connecting head 34, the first guide part 433 of the first output shaft is inserted into the first mating cavity 61, and then moves to the state where the first engaging part 432 of the first output shaft is engaged with the inner circumferential wall of the first mating cavity 61, and the first guide part 433 of the first output shaft is inserted into the second mating cavity 62. In this way, the transmission head 6 is disengaged from the receiving cavity 51, and the transmission head 6 achieves high-speed rotation by the engagement of the first engaging part 432 of the first output shaft with the first mating cavity 61. Finally, after processing is completed, when the meat grinder 31 is removed from the processing cup 2, the transmission head 6 moves axially downward to the initial state under the rebound action of the compression spring 7.

[0147] Understandably, in another preferred embodiment, the sliding groove of the receiving cavity 51 can also be set into three sections, namely, from top to bottom, the first and second guide portions 511, the second engagement portion 512, and the second and second guide portions 511. When there is no stirring element 3 pressing down on the bottom of the transmission head 6, the compression spring 7 pushes the transmission head 6 downward along the sliding groove of the receiving cavity 51 to the initial position. In the initial position, the transmission head 6 protrudes from the base of the main unit 1, and the bottom of the third engagement portion 63 of the transmission head 6 abuts against the limiting step 514. The third engagement portion 63 of the transmission head 6 and the second and second guide portions 511 are in alignment. The first guide portion 433 of the first output shaft is aligned with the first mating cavity 61. At this time, neither the first output shaft nor the receiving cavity 51 can drive the transmission head 6 to rotate. This setting helps to prevent the safety risk of a rotating blade if a consumer installs a meat grinder 31 with a cutting edge into the transmission hole 67 of the transmission head 6 when the button on the top of the main unit 1 is inverted and triggered. Furthermore, for example, when the dough-mixing rod 32 is inserted into the processing cup 2, the connecting head 34 of the dough-mixing rod 32 drives the transmission head 6 to move axially inward until the third engaging part 63 of the transmission head 6 engages with the second engaging part 512, the third engaging part 63 of the transmission head 6 disengages from the alignment of the second guide part 511, and the first guide part 433 of the first output shaft remains within the first mating cavity 61. Thus, only the cavity 51 can drive the transmission head 6 to achieve low-speed output. When the meat grinder 31 is inserted into the same processing cup 2, the connecting head 34 of the meat grinder 31 drives the transmission head 6 to move axially inward a greater distance until the third engaging part 63 of the transmission head 6 aligns with the first guide part 511, the first mating cavity 61 of the transmission head 6 engages with the first engaging part 432, and the second mating cavity 62 of the transmission head 6 inserts into the second mating cavity 62. Thus, only the first output shaft can drive the transmission head 6 to achieve high-speed output. In this design, since both the meat grinder 31 and the dough mixing rod 32 will drive the transmission head 6 to have an axial movement distance when they are installed, it is beneficial for the transmission head 6 to bring out the small material stuck between the transmission head 6 and the receiving cavity 51 when it falls back.

[0148] In the specific embodiments described above, the distance the transmission head 6 slides axially inward in the high-speed output state is greater than the distance it slides axially inward in the low-speed output state. However, in another embodiment of this utility model, referring to... Figure 20 and Figure 21 The distances the two move can be interchanged; that is, in the high-speed output state (moving at the first speed), the transmission head 6 is axially lower, and in the low-speed output state (moving at the second speed), the transmission head 6 is axially higher. The position of the transmission head when the main unit is in its initial state can be set to be the same as the position of the transmission head when the main unit is in the high-speed output state; that is, in the high-speed output state, the transmission head does not need to slide axially inward.

[0149] Specifically, the first guide portion 433 of the first output shaft needs to be located between the second-stage sun gear 431 and the first meshing portion 432. Internal meshing teeth are provided on the inner peripheral wall of the first mating cavity 61. The inner peripheral wall of the second mating cavity 62 is a smooth surface. The third meshing portion 63 is at the same height as the first mating cavity 61. The sliding groove consists of, from top to bottom, the second meshing portion 512 and the second guide portion 511 located below the second meshing portion 512. In the high-speed output state, the first meshing portion 432 and the third meshing portion 63 engage. The first meshing portion 432 is located within the first mating cavity 61, and the third meshing portion 63 is aligned with the second guide portion 511, meaning the second meshing portion 512 is positioned higher than the third meshing portion 63. At this time, only the first output shaft can drive the transmission head 6 to rotate at high speed. At this point, the drive head 6 needs to slide further axially inward until the first engaging part 432 aligns with the second mating cavity 62, the first guide part 433 extends into the first mating cavity 61, and the third engaging part 63 engages with the second engaging part 512, so that only the receiving cavity 51 drives the drive head 6 to rotate at low speed. In this case, the position of the drive head can be set to be the same as when the drive head is in the initial state in the high-speed output state, that is, there is no need to push the drive head to move axially inward in the high-speed output state; the drive head is only pushed to move axially inward in the low-speed output state. Of course, it can also be set that the drive head needs to move a certain distance axially inward relative to the initial state in both the high-speed output state and the low-speed output state.

[0150] It is also understandable that the food processing machine provided in this application may further include a first motor and a second motor within the main unit. The first motor drives the first output component to move, and the second motor drives the second output component to move. However, the first and second output components share an axially movable connector, and the first output shaft and the second output frame are axially offset. This solution makes the first and second output components more independent, and each has a stronger driving force.

[0151] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0152] The technical solutions protected by this utility model are not limited to the above-described embodiments. It should be noted that any combination of the technical solutions of any embodiment with one or more other embodiments is within the protection scope of this utility model. Although this utility model has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which are obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A multi-functional food processor characterized by: include: The host computer includes a first output component and a second output component. The first output component further includes a first output shaft driven to rotate at a first speed. The second output component includes a second output frame driven to rotate at a second speed. The second output frame has a receiving cavity, and the front end of the first output shaft extends into the receiving cavity. A transmission head is housed within the receiving cavity and sleeved on the outside of the first output shaft. The first output shaft has a first engagement portion that engages with the transmission head. The inner wall of the receiving cavity has a second engagement portion that engages with the transmission head. The first engagement portion and the second engagement portion are axially offset. The transmission head can move axially between the first engagement portion and the second engagement portion to selectively engage with either the first engagement portion or the second engagement portion. The transmission head, the receiving cavity, and the first output shaft are arranged coaxially. A stirring element is connected to a transmission head and drives the transmission head to move axially to engage with a first meshing part or a second meshing part. The first output shaft or the second output frame drives the stirring element to rotate through the transmission head.

2. The multi-functional food processor according to claim 1, characterized in that, It also includes a compression spring disposed within the receiving cavity to pre-press the transmission head against the bottom of the receiving cavity.

3. The multi-functional food processor of claim 2, wherein, One end of the compression spring is pressed against the first output shaft, and the other end is pressed against the transmission head.

4. The multi-functional food processor of claim 2, wherein, A pressure plate is provided above the receiving cavity, the first output shaft passes through the pressure plate, and the compression spring is sleeved on the outside of the first output shaft, with one end abutting against the pressure plate and the other end abutting against the transmission head.

5. The multi-functional food processor of claim 1, wherein, It also includes a processing cup, the bottom of which is provided with a first positioning part and a second positioning part that are connected to the bottom of the stirring member. The first positioning part and the second positioning part are at different heights from the bottom surface of the processing cup. The stirring member is adapted to be installed with the first positioning part so that the push transmission head moves to engage with the first meshing part. The stirring member is adapted to be installed with the second positioning part so that the push transmission head moves to engage with the second meshing part.

6. The multi-functional food processor of claim 1, wherein, It also includes a processing cup with a positioning part at the bottom. The bottom of the stirring component is connected to the positioning part. The stirring component includes a first stirring component and a second stirring component. The height of the first stirring component is different from that of the second stirring component. The first stirring component is driven by a transmission head engaging with a first meshing part, and the second stirring component is driven by a transmission head engaging with a second meshing part.

7. The multi-functional food processor of claim 1, wherein, The top of the transmission head is provided with a mating cavity for the first meshing part to be inserted. The inner peripheral wall of the mating cavity is provided with internal meshing teeth that mesh with the first meshing part. The outer wall of the transmission head is also provided with external meshing teeth that mesh with the second meshing part.

8. The multi-functional food processor of claim 7, wherein, The first output shaft further includes a first guide portion located below the first engagement portion, and the mating cavity includes a first mating cavity with internal meshing teeth and a second mating cavity located below the first mating cavity, with the first guide portion extending into the second mating cavity.

9. The multi-functional food processor of claim 1, wherein, The receiving cavity further includes a second guide portion that is axially offset from the second engaging portion, the second guide portion being used to guide the axial movement of the transmission head.

10. The multi-functional food processor of claim 1, wherein, The outer peripheral wall of the transmission head is radially protruding with a limiting protrusion, and the inner peripheral wall of the receiving cavity is provided with a limiting step that supports the limiting protrusion.

11. The multi-functional food processor of claim 1, wherein, The main unit is equipped with a motor, and the first output component includes a primary sun gear that is driven and cooperates with the output shaft of the motor, a plurality of primary planet gears that mesh with the outer periphery of the primary sun gear, and a first output frame located at the bottom of the plurality of primary planet gears and moving with the primary planet gears. The second output component includes a plurality of secondary planetary gears, a second output frame disposed at the bottom of the secondary planetary gears and moving with the secondary planetary gears, the receiving cavity being disposed in the second output frame, and the first output frame including a first output shaft meshing with the secondary planetary gears.

12. The multi-functional food processor of claim 1, wherein, The host is equipped with a motor, and the first output shaft of the first output component is the output shaft of the motor; the second output component includes multiple planetary gears driven by the output shaft of the motor, and the second output is mounted on the bottom of the multiple planetary gears and moves with the planetary gears.

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