A food processor

Abstract

The utility model discloses a food processing machine, including cup body subassembly and host computer, be equipped with with the drive arrangement of stirring part transmission connection in the host computer, and drive arrangement is equipped with the first output head and second output head of different rotating speed, and the second output head inside hollow forms with dough knife transmission connection drive groove and is equipped with in the first output head outside, and the dough knife includes the knife shaft and the knife blade of being connected on the knife shaft, and the knife shaft top is equipped with with the meshing shaft of drive connection of drive groove, and the meshing shaft includes the meshing groove of extending along the axial direction and the meshing tooth, and the meshing groove top and bottom are equipped with respectively by the first guide surface and the second guide surface of inside to outside oblique downward extension, and the extension end of first guide surface and the extension beginning of second guide surface are connected through the transition surface of vertical extension, make the flour can smoothly pass through the transition surface from first guide surface guide to second guide surface and then slide to the bottom of cup body subassembly, avoid the flour to enter and remain to drive groove in cause difficult to clean.

Description

Technical Field

[0001] This utility model relates to the field of household appliances technology, specifically to a food processing machine. Background Technology

[0002] Existing food processors typically consist of a main unit with a built-in drive unit and a mixing cup located below the main unit. The mixing cup contains a stirring rod driven by the drive unit, and the stirring rod has a transmission groove that is detachably connected to the output end of the drive unit. When using the food processor to process ingredients, the user first needs to install the stirring rod in the mixing cup, then add the ingredients, and then install the main unit above the mixing cup with its output end connected to the stirring rod, driving the stirring rod to rotate and achieve mixing. However, when adding ingredients to the mixing cup, especially when adding flour to make dough, it is easy for flour to be poured into the transmission groove. Flour accumulates in the transmission groove, preventing the output end of the drive unit from fully inserting into the transmission groove, resulting in an ineffective transmission connection. Furthermore, powder enters the output end of the drive unit, making it difficult to clean. Since the live parts cannot be rinsed for cleaning, this can lead to risks such as unpleasant odors and transmission misalignment over time. When users clean the flour from the transmission groove, they need to disassemble the stirring rod, pour out the ingredients or remove them with their fingers for cleaning. This is very inconvenient and wastes ingredients. Furthermore, when reinstalling the stirring rod into the cup assembly, the bottom of the cup assembly is covered with flour, making it difficult for users to install. Even after prying aside the shaft covering the bottom wall of the cup assembly to insert the stirring rod, there is still a lot of flour between the stirring rod and the shaft, causing the stirring rod to make a lot of noise when it rotates.

[0003] To address the aforementioned issues, the applicant's earlier patent application CN215687143U disclosed a food processor that is easy to clean. This processor features a transmission groove on the stirring rod that is detachably connected to the output end of a drive device. An opening is located on the side wall of the rod, communicating with the transmission groove via a connecting channel. This allows the user to easily remove any accidentally spilled ingredients, especially flour, from the transmission groove through the connecting channel into the mixing cup, preventing accumulation and difficulty in cleaning. However, in actual use, users have found that some flour remains in the transmission groove as it moves downwards, particularly between the meshing teeth. When the output end of the drive device engages with the transmission groove, the presence of flour can cause misalignment and jamming. Furthermore, during kneading, dough clumps can enter the connecting channel through the opening, pushing the powder upwards to the point where the drive device's output end engages with the transmission groove, further resulting in powder residue at the drive device's output end.

[0004] In addition, another type of food processing machine, such as CN 216090195U, discloses a food processor, which sets the drive device to include a motor and a first speed transmission mechanism and a second speed transmission mechanism connected to the motor. The output end of the first speed transmission mechanism has a first output end and a second output end. The output speeds of the first output end and the second output end are different, and they are used to connect different mixing components to adapt to different mixing needs. In the case of high speed and low torque, such as when mincing meat, the meat mincing blade is connected to the first output end; in the case of low speed and high torque, such as when kneading dough, the dough kneading blade is connected to the second output end. The first output end and the second output end adopt a stepped shaft hole method, so that the meat mincing blade and the dough kneading blade are both male connectors, that is, solid meshing shafts, to be connected to the first output end and the second output end respectively. This eliminates the need for a separate perforation hole at the top of the blade shaft. However, to ensure the strength of the dough knives to meet the high torque requirements, the size of the dough knives' engagement shaft is larger than that of the meat grinder's engagement shaft. This makes it easy for users to spill flour onto the top of the engagement shaft when adding flour to the mixing cup, resulting in some flour accumulation. This flour buildup on the engagement shaft can cause jamming or even complete failure of the output end when engaging with the engagement shaft, leading to transmission obstruction and severely impacting the user experience. Furthermore, existing food processors typically have radially protruding baffles at the bottom of the engagement shaft to prevent food from overflowing from the lid's perforation. Flour can also accumulate at the connection between the baffles and the engagement shaft, requiring the entire kneading rod to be removed, inverted, and shaken to remove it, which is very inconvenient. Utility Model Content

[0005] The purpose of this invention is to provide a food processing machine that solves the problem of existing food processing machines that use a stepped shaft hole to achieve dual output. This solves the problem that when flour is added, the powder accumulates on the top of the meshing shaft of the dough knives and enters the output end of the drive device during insertion, resulting in flour residue in the output end of the drive device that is difficult to clean.

[0006] To achieve the above objectives, this utility model provides a food processing machine, including a cup assembly with a built-in stirring element and a processing chamber, and a main unit detachably disposed above the cup assembly. The main unit is provided with a drive device that is driven and connected to the stirring element. The stirring element is detachably connected to the drive device. The drive device is provided with a first output head and a second output head with different rotation speeds. The stirring element includes a meat grinder blade that is driven and connected to the first output head, and a dough kneader that is driven and connected to the second output head. The second output head is hollow inside to form a transmission groove that is driven and connected to the dough kneader and is sleeved on the outside of the first output head. The dough kneader includes a blade shaft and blades connected to the blade shaft. The top end of the blade shaft is provided with a meshing shaft that is driven and connected to the transmission groove. The meshing shaft includes a meshing groove extending axially and meshing teeth. The top and bottom ends of the meshing groove are respectively provided with a first guide surface and a second guide surface that extend downward from the inside out. The extended end of the first guide surface and the extended beginning of the second guide surface are connected by a vertically extending transition surface.

[0007] This application provides a drive unit with a first output head and a second output head that rotate at different speeds. The second output head is hollow inside, forming a transmission groove that connects to the dough-making blade and is fitted onto the outside of the first output head. This allows users to select the appropriate speed output according to the processing needs of different ingredients, improving mixing efficiency and adaptability to meet diverse user requirements. Simultaneously, the top of the blade shaft has a meshing shaft that connects to the transmission groove, enabling the dough-making blade to transmit torque through the engagement of the meshing shaft and the transmission groove, ensuring stable rotation of the dough-making blade. Furthermore, the meshing shaft includes a meshing groove extending axially and meshing teeth. The top and bottom ends of the meshing groove are respectively provided with a first guide surface and a second guide surface extending downward from the inside out. This allows the user to place food, especially powdery food such as flour, into the processing cavity. If the flour falls onto the top of the meshing shaft during the pouring process, it can slide downward along the first guide surface under the action of gravity and be guided to the second guide surface through the transition surface. When it falls onto the second guide surface, it will also slide outward along the second guide surface under the action of gravity and into the processing cavity. This effectively avoids the problem of food accumulating on the meshing shaft when adding food, which would cause flour to enter the transmission groove of the drive device and remain in the transmission groove when it engages with the meshing shaft, making it difficult to clean. It also avoids the problem of jamming or even failure to engage between the meshing shaft and the transmission groove, which would cause transmission obstruction. This ensures that the transmission groove can engage smoothly with the meshing shaft and guarantees the stability of the transmission. Furthermore, it ensures the cleanliness of the main unit, requiring only a wipe-down; rinsing is unnecessary, better protecting the internal electrical components and extending their lifespan. It also maintains the cleanliness of the dough-making blade, making cleaning easier and eliminating blind spots for powder accumulation—a simple rinse is all it takes. In addition, the extended end of the first guide surface and the extended beginning of the second guide surface are connected by a vertically extending transition surface. This allows flour to smoothly pass through the transition surface from the first guide surface to the second guide surface. Simultaneously, the transition surface connecting to the extended end of the first guide surface prevents the meshing groove from becoming excessively deep, avoiding weakening the structural strength of the meshing shaft due to excessive groove depth. This ensures sufficient torsional resistance when transmitting torque, effectively guiding powder to slide off while maintaining sufficient structural strength, preventing accumulation.

[0008] In a preferred embodiment of a food processing machine, the cup assembly includes a mixing cup and a lid covering the mixing cup. The lid has a clearance hole for an engagement shaft to extend out, and an engagement groove extends downward and passes through the clearance hole into the mixing cup.

[0009] By setting the meshing groove to extend downwards and pass through the clearance hole into the mixing cup, if some flour remains on the second guide surface, under the combined action of gravity and centrifugal force, the remaining flour can continue to slide outwards along the second guide surface and fall into the mixing cup to participate in kneading. This further prevents flour from accumulating on the surface of the meshing shaft and also prevents the flour remaining on the second guide surface from flying onto the cup lid, further ensuring the cleanliness of the cup lid and the main unit.

[0010] In a preferred embodiment of a food processing machine, the height L1 of the meshing groove and the meshing height L2 of the meshing shaft and the transmission groove satisfy the following condition: 1.5L2≤L1≤2.5L2.

[0011] By setting the height L1 of the meshing groove to the meshing height L2 of the meshing shaft and transmission groove to satisfy 1.5L2≤L1≤2.5L2, two things are achieved: First, the height of the meshing groove is prevented from being too small relative to the meshing height of the meshing shaft and transmission groove, which would cause flour to rise under centrifugal force and enter the meshing area if it accumulates at the second guide surface, affecting the smoothness of the fit and causing it to stick to the bottom of the main unit. Second, the height of the meshing groove is prevented from being too large relative to the meshing height of the meshing shaft and transmission groove, which would lead to insufficient structural strength of the meshing shaft or an excessively long guide surface, increasing the risk of powder retention. This ensures that while effectively guiding the powder to slide down, the stable fit and structural reliability of the meshing area are maintained, further improving the stability and durability of the entire machine. In addition, it also prevents the height of the transmission groove from being too large relative to the meshing height of the meshing shaft and transmission groove, which would cause the meshing groove to extend too far into the cup assembly, thus reducing the actual processing capacity and limiting the amount of food that can be processed.

[0012] In a preferred embodiment of a food processing machine, the top wall and side wall of the meshing teeth are connected by a first arcuate surface.

[0013] By designing the top and side walls of the meshing teeth to connect via a first arc-shaped surface, several advantages are achieved. First, flour falling onto the top wall of the meshing teeth during the powder-adding process can more easily slide downwards along the first arc-shaped surface and enter the processing chamber, further preventing flour accumulation on the top of the meshing teeth. Second, when assembling the dough-making knife with the transmission groove, the guiding effect of the first arc-shaped surface allows the meshing teeth to insert more smoothly into the transmission groove, reducing assembly difficulty and improving assembly efficiency. Furthermore, the first arc-shaped surface provides a better grip when the user holds the meshing shaft to pick up and put down the dough-making knife, preventing the sharp edges between the top and side walls of the meshing teeth from causing discomfort or even cuts.

[0014] In a preferred embodiment of a food processing machine, the transmission groove is provided with a limiting ring extending inward and dividing between the first output head and the meshing shaft. The limiting ring is provided with a second arc-shaped surface extending outward from its inner end to the inner sidewall of the second output head. The top wall of the first arc-shaped surface and part of the meshing teeth are axially aligned with the second arc-shaped surface.

[0015] A limiting ring extending inward and dividing the transmission groove between the first output head and the meshing shaft effectively restricts the axial position of the meshing shaft when it engages with the transmission groove. This prevents the dough-grinding blade from colliding with the second output head and causing damage, thus protecting the second output head. Simultaneously, the limiting ring has a second arc-shaped surface extending outward from its inner end to the inner wall of the second output head. The first arc-shaped surface and the top walls of some meshing teeth are axially aligned with the second arc-shaped surface. On one hand, when the dough-grinding blade moves upward, the top walls of the meshing teeth and the first arc-shaped surface can contact the second arc-shaped surface, forming a buffer fit and reducing the impact force on the meshing teeth, thereby preventing significant wear and protecting the meshing shaft. On the other hand, when the meat grinder blade is assembled with the first output head, the guide effect of the second arc-shaped surface allows the meat grinder blade to slide more smoothly into its mating position with the first output head, reducing the risk of jamming during assembly and improving the overall assembly efficiency.

[0016] In a preferred embodiment of a food processing machine, the top wall of the meshing teeth extends downward at an inward and outward angle.

[0017] By setting the top wall of the meshing teeth to slope downwards from the inside out, the flour that falls on the top wall of the meshing teeth during the flour adding process can slide down the top wall of the meshing teeth and enter the processing chamber more easily, further avoiding the accumulation of flour on the top of the meshing teeth.

[0018] In a preferred embodiment of a food processing machine, the inclination angle A of the top wall of the meshing teeth satisfies: 5°≤A≤15°.

[0019] By setting the inclination angle A of the top wall of the meshing teeth to satisfy 5°≤A≤15°, the problem of flour not being able to slide effectively down the top wall of the meshing teeth and accumulating flour is avoided. At the same time, the problem of the inclination angle of the top wall of the meshing teeth being too large is avoided, which would shorten the actual depth of meshing between the meshing part and the transmission groove when the total height of the meshing teeth and the depth of the meshing groove remain unchanged, resulting in unstable transmission. This ensures that the flour slides down smoothly while maintaining the load-bearing capacity of the meshing teeth.

[0020] In a preferred embodiment of a food processing machine, the inclination angle B of the first guide surface or the second guide surface satisfies: 50° ≤ B ≤ 70°; or,

[0021] The first guide surface is an outwardly convex arc shape, and the radius R of the first guide surface satisfies: 3mm≤C≤8mm.

[0022] By setting the tilt angle of the first guide surface or the second guide surface to satisfy: 50°≤B≤70°, we can avoid the situation where the tilt angle of the first guide surface or the second guide surface is too small, causing the flour to slide down too slowly when it falls on the first guide surface or the second guide surface, resulting in accumulation; at the same time, we can avoid the situation where the tilt angle is too large, causing the meshing groove to be too deep, resulting in the meshing shaft having too low strength.

[0023] By setting the first guide surface to be an outwardly convex arc shape, and the radius R of the first guide surface satisfies: 3mm≤R≤8mm, the problem of flour accumulation due to poor flow caused by the radius of the first guide surface being too small is avoided; at the same time, the problem of low meshing shaft strength due to the radius being too large is also avoided.

[0024] In a preferred embodiment of a food processing machine, the second guide surface is an inclined surface that slopes downwards and outwards from the bottom end of the transition surface, and the width of the inclined surface gradually increases from top to bottom; or,

[0025] The blade shaft also includes an extension surface that extends vertically downward from the bottom of the second guide surface to the top of the blade, so that the flour can slide down along the extension surface after sliding off the second guide surface.

[0026] In a preferred embodiment of a food processing machine, the top of the meshing shaft is provided with an upwardly raised powder guiding part, which is shaped like a sphere or a cone, and the outer surface of the powder guiding part forms a first guide surface.

[0027] By setting the powder guiding part to be raised upward in the shape of a sphere or cone, and the outer surface of the powder guiding part forming a first guiding surface, the flour can slide directly into the processing cavity through the first guiding surface when it falls on the powder guiding part, further reducing the risk of residue. Attached Figure Description

[0028] 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:

[0029] Figure 1 This is a cross-sectional view of a food processing machine according to one embodiment of the present invention;

[0030] Figure 2 for Figure 1 Enlarged view of section A;

[0031] Figure 3 This is a schematic diagram of the dough-mixing knife in one embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the dough-mixing knife in one embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the dough-mixing knife in another embodiment of the present invention.

[0034] List of components and reference numerals:

[0035] 1-Main unit; 2-Motor; 3-Reduction gearbox; 31-First output head; 32-Second output head; 321-Limiting ring; 3211-Second arc surface; 322-Transmission groove; 4-Cup body assembly; 41-Processing cavity; 5-Dough knives; 51-Knife shaft; 511-Meshing teeth; 5111-First arc surface; 512-Meshing groove; 5121-First guide surface; 5122-Second guide surface; 5123-Transition surface; 513-Extension surface; 52-Knife blade. Detailed Implementation

[0036] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0037] 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.

[0038] like Figures 1 to 5As shown, this utility model provides a food processing machine, including a cup assembly 4 with a built-in stirring element and a processing chamber 41, and a main unit 1 detachably disposed above the cup assembly 4. The main unit 1 has a drive device that is pulverized and connected to a dough-kneading blade 5. The dough-kneading blade 5 is detachably connected to the drive device. The drive device has a first output head 31 and a second output head 32 with different rotational speeds. The stirring element includes a meat grinder (not shown) pulverized and connected to the first output head 31, and a dough-kneading blade 5 pulverized and connected to the second output head 32. The second output head 32 is hollow inside, forming a transmission groove pulverized and connected to the dough-kneading blade 5, and is sleeved on the outside of the first output head 31. The meat grinder and the dough-kneading blade are selectively assembled into the drive device to achieve high-speed meat grinding and relatively low-speed dough kneading, respectively. The dough mixer 5 includes a blade shaft 51 and blades 52 connected to the blade shaft 51. The top end of the blade shaft 51 is provided with a meshing shaft that is connected to the transmission groove 322. The meshing shaft includes a meshing groove 512 extending axially and meshing teeth 511. The top and bottom ends of the meshing groove 512 are respectively provided with a first guide surface 5121 and a second guide surface 5122 extending downward from the inside out. The extended end of the first guide surface 5121 and the extended beginning of the second guide surface 5122 are connected by a vertically extending transition surface 5123. Here, the vertical extension of the transition surface 5123 is not limited to extending along the axial direction of the blade shaft 51. It can also extend downward and outward at a certain angle. The angle between the transition surface 5123 and the central axis of the blade shaft 51 is not greater than 30°.

[0039] This application provides a drive unit with a first output head 31 and a second output head 32 with different rotational speeds. The second output head 32 is hollow inside, forming a transmission groove 322 that is connected to the dough-mixing blade 5 and is fitted onto the outside of the first output head 31. This allows users to select the appropriate speed output according to the processing needs of different ingredients, improving mixing efficiency and adaptability to meet different user requirements. Simultaneously, the top of the blade shaft 51 has a meshing shaft that is connected to the transmission groove 322, enabling the dough-mixing blade 5 to transmit torque through the meshing shaft and the transmission groove 322, ensuring stable rotation of the dough-mixing blade 5. Furthermore, the meshing shaft includes a meshing groove 512 extending axially and meshing teeth 511. The top and bottom ends of the meshing groove 512 are respectively provided with a first guide surface 5121 and a second guide surface 5122 extending downwards from the inside out. This allows the user to place food, especially powdered food such as flour, into the processing cavity 41. If the flour falls onto the top of the meshing shaft during the pouring process, it can slide downwards along the first guide surface 5121 under gravity and be guided to the second guide surface 5122 via the transition surface 5123. When it falls onto the second guide surface 5122, it... Under the influence of gravity, the dough slides outward along the second guide surface 5122 and into the processing cavity 41. This effectively prevents the accumulation of ingredients on the meshing shaft when adding ingredients, which would cause flour to enter and remain in the transmission groove 322 of the drive device when it engages with the meshing shaft, resulting in difficulty in cleaning and odor. It also prevents jamming or even non-cooperation between the meshing shaft and the transmission groove 322, thus avoiding transmission obstruction. This ensures that the transmission groove 322 can smoothly engage with the meshing shaft, guaranteeing transmission stability. Furthermore, it maintains the cleanliness of the main unit 1, requiring only a wipe-down without rinsing, better protecting the internal electrical components and extending their service life. It also ensures the cleanliness of the dough-mixing blade 5, making it easier to clean without any powder accumulation blind spots; a simple rinse is all it takes. Furthermore, the extended end of the first guide surface 5121 and the extended beginning of the second guide surface 5122 are connected by a vertically extending transition surface 5123. This allows the flour to be smoothly guided from the first guide surface 5121 to the second guide surface 5122 through the transition surface 5123. At the same time, the transition surface 5123 is connected to the extended end of the first guide surface 5121, which prevents the groove depth of the meshing groove 512 from being too deep. This avoids weakening the structural strength of the meshing shaft due to excessive groove depth, ensuring that it has sufficient anti-torsional performance when transmitting torque. In this way, the meshing shaft can effectively guide the powder to slide down while ensuring sufficient structural strength, thus preventing accumulation.

[0040] Furthermore, when faced with flour accumulation on the dough kneading blade, users typically swing the blade to shake off the flour at the top of the blade shaft. However, during this swinging motion, a gap forms between the lower end of the blade and the cup assembly 4, allowing flour from the bottom to enter the positioning hole at the bottom of the blade. The solution proposed in this application, through a smooth, three-section powder guiding path consisting of a first guide surface 5121, a transition surface 5123, and a second guide surface 5122, directly prevents consumers from swinging the blade, thus avoiding the situation where flour enters the positioning hole, causing the blade to rotate unevenly and produce abnormal noise.

[0041] It should be noted that this application does not specifically limit the driving device; preferably, such as Figure 1 As shown, the drive device includes a motor 2 and a reduction gearbox 3 that is driven by the motor shaft of the motor 2. The reduction gearbox 3 includes a sun gear and planet gears. The bottom end of the sun gear is driven by a first output head 31, and the bottom end of the planet gears is driven by a second output head 32. This enables the first output head 31 to output high speed and low torque for connection with a meat grinder or dough knives 5. The second output head 32 outputs low speed and high torque, suitable for kneading dough, and is connected with a dough knives 5.

[0042] As a preferred embodiment of this application, such as Figure 1 As shown, the cup assembly 4 includes a mixing cup and a cup lid that covers the mixing cup. The cup lid has a clearance hole for the engagement shaft to extend out, and the engagement groove 512 extends downward and passes through the clearance hole into the mixing cup.

[0043] By setting the meshing groove 512 to extend downward and pass through the clearance hole into the mixing cup, if some flour remains on the second guide surface 5122, under the combined action of gravity and centrifugal force, the flour can continue to slide outward along the second guide surface 5122 and fall into the mixing cup to participate in kneading. This further prevents flour from accumulating on the surface of the meshing shaft and also prevents the flour remaining on the second guide surface 5122 from flying onto the cup lid, thus further ensuring the cleanliness of the cup lid and the main unit 1.

[0044] It should be noted that this application does not specifically limit the relationship between the height of the meshing groove 512 and the meshing height of the meshing shaft and the transmission groove 322. As a preferred embodiment of this application, such as Figure 1 As shown, the height L1 of the meshing groove 512 and the meshing height L2 of the meshing shaft and the transmission groove 322 satisfy: 1.5L2≤L1≤2.5L2, and more preferably, L1=2L2.

[0045] By setting the height L1 of the meshing groove 512 and the meshing height L2 of the meshing shaft and transmission groove 322 to satisfy 1.5L2≤L1≤2.5L2, on the one hand, it avoids the situation where the height of the meshing groove 512 is too small relative to the meshing height of the meshing shaft and transmission groove 322, which would cause the flour to rise under centrifugal force and enter the meshing area if it accumulates at the second guide surface 5122, affecting the smoothness of the fit and sticking to the bottom of the main unit 1; on the other hand, it avoids the situation where the height of the meshing groove 512 is too large relative to the meshing height of the meshing shaft and transmission groove 322, which would lead to insufficient structural strength of the meshing shaft or an excessively long guide surface, increasing the risk of powder retention. This ensures that while effectively guiding the powder to slide down, it maintains the stable fit and structural reliability of the meshing area, further improving the stability and durability of the entire machine operation. In addition, it can also prevent the height of the transmission groove 322 from being too large relative to the meshing height of the meshing shaft and the transmission groove 322, which would cause the meshing groove to extend too far into the cup body assembly 4, thereby reducing the actual processing capacity due to the inability to add more food during food processing.

[0046] As a preferred embodiment of this application, such as Figure 2 , Figure 4 As shown, the top wall and side wall of the meshing tooth 511 are connected by the first arc-shaped surface 5111.

[0047] By setting the top and side walls of the meshing teeth 511 to be connected by the first arc-shaped surface 5111, on the one hand, flour falling onto the top wall of the meshing teeth 511 during the flour adding process can more easily slide down the first arc-shaped surface 5111 and enter the processing cavity 41, further preventing flour from accumulating on the top of the meshing teeth 511; on the other hand, when the dough-making knife 5 is engaged with the transmission groove 322, the guiding effect of the first arc-shaped surface 5111 can make the meshing teeth 511 insert into the transmission groove 322 more smoothly, reducing assembly difficulty and improving assembly efficiency. In addition, the setting of the first arc-shaped surface 5111 makes the user's grip feel better when picking up and putting down the dough-making knife by holding the meshing shaft, avoiding the situation where the top and side walls of the meshing teeth 511 are relatively sharp, causing the user to have a poor grip or even get cut.

[0048] Furthermore, such as Figure 2 As shown, the transmission groove 322 is provided with a limiting ring 321 that extends inward and is divided between the first output head 31 and the meshing shaft. The limiting ring 321 is provided with a second arc-shaped surface 3211 that extends outward from the inner end to the inner side wall of the second output head 32. The top wall of the first arc-shaped surface 5111 and part of the meshing teeth 511 are axially aligned with the second arc-shaped surface 3211.

[0049] The transmission groove 322 is provided with a limiting ring 321 that extends inward and is divided between the first output head 31 and the meshing shaft. When the meshing shaft is engaged with the transmission groove 322, the limiting ring 321 can effectively restrict the axial position of the meshing shaft, thereby preventing the dough knife 5 from colliding with the second output head 32 when it moves upward and causing damage to it, thus protecting the second output head 32. Meanwhile, the limiting ring 321 is provided with a second arc-shaped surface 3211 extending from the inner end to the inner sidewall of the second output head 32. The top wall of the first arc-shaped surface 5111 and part of the meshing teeth 511 are axially aligned with the second arc-shaped surface 3211. On the one hand, when the dough-grinding knife 5 moves upward, the top wall of the meshing teeth 511 and the first arc-shaped surface 5111 can contact the second arc-shaped surface 3211, thereby forming a buffer fit, reducing the impact of the impact force on the meshing teeth 511, and thus avoiding large wear of the meshing teeth 511, and realizing the protection of the meshing shaft. On the other hand, when the meat grinder is assembled with the first output head 31, the dough-grinding knife 5 can slide more smoothly into the position that mates with the first output head 31 with the help of the guiding effect of the second arc-shaped surface 3211, reducing the risk of jamming during the assembly process and improving the overall assembly efficiency.

[0050] It should be noted that this application does not specifically limit the top wall structure of the meshing tooth 511. As one preferred embodiment of this application, such as... Figure 4 As shown, the top wall of the meshing tooth 511 extends downwards at an angle from the inside out.

[0051] By setting the top wall of the meshing tooth 511 to extend downwards at an inward angle, the flour that falls on the top wall of the meshing tooth 511 during the flour addition process can slide downwards along the top wall of the meshing tooth 511 and enter the processing chamber 41 more easily, thus further avoiding the accumulation of flour on the top of the meshing tooth 511.

[0052] It should be further noted that this application does not specifically limit the inclination angle of the top wall of the meshing tooth 511. As a preferred embodiment of this application, such as... Figure 4 As shown, the inclination angle A of the top wall of the meshing tooth 511 satisfies: 5° ≤ A ≤ 15°, and more preferably, A = 6°, 8°, 10°, 12°, etc.

[0053] By setting the tilt angle A of the top wall of the meshing tooth 511 to satisfy: 5°≤A≤15°, the situation where the tilt angle of the top wall of the meshing tooth 511 is too small, which would prevent the flour from effectively sliding down the top wall of the meshing tooth 511 and cause flour accumulation, is avoided. At the same time, the situation where the tilt angle of the top wall of the meshing tooth 511 is too large, which would shorten the actual depth of meshing between the meshing shaft and the transmission groove 322 under the condition that the total height of the meshing tooth 511 and the depth of the meshing groove 512 remain unchanged, resulting in unstable transmission, is avoided. This ensures that the flour slides down smoothly while maintaining the load-bearing capacity of the meshing tooth 511.

[0054] It should be noted that this application does not specifically limit the tilt angle of the first guide surface 5121 and the second guide surface 5122. As a preferred embodiment of this application, such as Figure 4 As shown, the tilt angle B of the first guide surface 5121 or the second guide surface 5122 satisfies: 50°≤B≤70°, more preferably, B=50°, 60° or 70°.

[0055] By setting the tilt angle of the first guide surface 5121 or the second guide surface 5122 to B such that 50°≤B≤70°, the tilt angle of the first guide surface 5121 or the second guide surface 5122 is set to be too small, which would cause the flour to slide down too slowly when it falls on the first guide surface 5121 or the second guide surface 5122 and accumulate. At the same time, the tilt angle is set to be too large, which would cause the depth of the meshing groove 512 to be too deep and result in the strength of the meshing shaft being too low.

[0056] It should also be noted that this application does not specifically limit the structure of the first guide surface 5121 and the second guide surface 5122, such as... Figure 4 As shown, as a preferred embodiment of this application, the first guide surface 5121 is an outwardly convex arc shape, and the radius R of the first guide surface 5121 satisfies: 3mm≤R≤8mm, more preferably, R=4mm, 5mm, 6mm.

[0057] By setting the first guide surface 5121 to be an outwardly convex arc shape, and the radius R of the first guide surface 5121 satisfying: 3mm≤R≤8mm, the radius of the first guide surface 5121 is too small, which would cause the flour to flow poorly and accumulate; at the same time, the radius is too large, which would cause the meshing shaft strength to be too low.

[0058] As a preferred embodiment of this application, such as Figure 4 As shown, the second guide surface 5122 is an inclined surface that slopes downward from the bottom end of the transition surface 5123 and extends outward, and the width of the inclined surface gradually increases from top to bottom.

[0059] As a preferred embodiment of this application, such as Figure 3 As shown, the blade shaft 51 also includes an extension surface 513 that extends vertically downward from the bottom of the second guide surface 5122 to the top of the blade 52, so that the flour can slide downward along the extension surface 513 after sliding off the second guide surface 5122.

[0060] By providing an extension surface 513 on the blade shaft 51, extending vertically downward from the bottom of the second guide surface 5122 to the top of the blade 52, the radially protruding baffle ribs are eliminated compared to existing technologies. This allows flour to slide directly down into the cup through the extension surface 513 as it moves downward through the first guide surface 5121, transition surface 5123, and second guide surface 5122. Compared to existing baffle ribs, this effectively prevents flour from accumulating above the baffle ribs. Even if some flour slides down through the extension surface 513 and accumulates on top of the blade 52 when flour is added, it is not a problem because the height of the blade during kneading is within the processing area, and the accumulated powder is easily shaken off or carried away by the dough flakes to participate in the kneading process.

[0061] It should be noted that the structure of the first guide surface 5121 in this application is not limited to the above-described configuration, such as... Figure 5 As shown, the top of the meshing shaft is provided with an upwardly raised powder guiding part, which is shaped like a sphere or a cone, and the outer surface of the powder guiding part forms the first guide surface 5121.

[0062] By setting the powder guiding part to be raised upward in the shape of a sphere or cone, and the outer surface of the powder guiding part forming the first guide surface 5121, the flour can slide directly into the processing cavity 41 through the first guide surface 5121 when it falls on the powder guiding part, thereby further reducing the risk of residue.

[0063] The technical solutions protected by this utility model are not limited to the above 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 will be 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 food processing machine, comprising a cup assembly with a built-in stirring element and a processing chamber, and a main unit detachably disposed above the cup assembly, wherein the main unit has a drive device pulsator connected to the stirring element, the stirring element is detachably connected to the drive device, the drive device has a first output head and a second output head with different rotational speeds, the stirring element includes a meat grinder blade pulsator connected to the first output head and a dough kneader pulsator connected to the second output head, the second output head is hollow to form a transmission groove pulsator connected to the dough kneader, the transmission groove is located outside the first output head and extends below the first output head, characterized in that... The dough knives include a knife shaft and knife blades connected to the knife shaft. The top end of the knife shaft is provided with a meshing shaft that is connected to the transmission groove. The outer side of the meshing shaft includes a meshing groove and meshing teeth extending axially. The top and bottom ends of the meshing groove are respectively provided with a first guide surface and a second guide surface extending downward from the inside to the outside. The extended end of the first guide surface and the extended beginning of the second guide surface are connected by a vertically extending transition surface.

2. The food processing machine according to claim 1, characterized in that, The cup assembly includes a mixing cup and a lid that covers the mixing cup. The lid has a clearance hole for the engagement shaft to extend out, and the engagement groove extends downward and passes through the clearance hole into the mixing cup.

3. The food processing machine according to claim 1, characterized in that, The height L1 of the meshing groove and the meshing height L2 of the meshing shaft and the transmission groove satisfy the following condition: 1.5L2≤L1≤2.5L2.

4. A food processing machine according to claim 1, characterized in that, The top and side walls of the meshing teeth are connected by a first arc-shaped surface.

5. A food processing machine according to claim 4, characterized in that, The transmission groove is provided with a limiting ring that extends inward and divides between the first output head and the meshing shaft. The limiting ring is provided with a second arc-shaped surface that extends outward from the inner end to the inner sidewall of the second output head. The first arc-shaped surface and the top wall of part of the meshing teeth are axially aligned with the second arc-shaped surface.

6. A food processing machine according to claim 1, characterized in that, The top wall of the meshing teeth slopes downward from the inside out.

7. A food processing machine according to claim 6, characterized in that, The inclination angle A of the top wall of the meshing tooth satisfies: 5°≤A≤15°.

8. A food processing machine according to claim 1, characterized in that, The inclination angle B of the first guide surface or the second guide surface satisfies: 50° ≤ B ≤ 70°; or, The first guide surface is an outwardly convex arc shape, and the radius R of the first guide surface satisfies: 3mm≤R≤8mm.

9. A food processing machine according to claim 1, characterized in that, The second guide surface is an inclined surface that slopes downwards and extends outwards from the bottom end of the transition surface, and the width of the inclined surface gradually increases from top to bottom; or, The blade shaft also includes an extension surface that extends vertically downward from the bottom of the second guide surface to the top of the blade, so that the flour can slide downward along the extension surface after sliding off the second guide surface.

10. A food processing machine according to claim 1, characterized in that, The top of the meshing shaft is provided with an upwardly raised powder guiding part, which is shaped like a sphere or a cone, and the outer surface of the powder guiding part forms the first guide surface.

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