Transmission speed regulation structure for food processer

Abstract

The utility model discloses a transmission speed regulation structure for a food processer. The food processer comprises a fixed platform, the bowl piece is installed on the fixed platform, and the bowl piece is provided with a containing cavity used for containing food; the movable platform is movably arranged relative to the fixed platform; the cutter is rotationally connected with the moving platform, and the cutter extends into the containing cavity; the driving module is in transmission connection with the cutter; a moving module; the moving module comprises a lead screw rotationally arranged on the fixed platform, the moving platform is rotationally provided with a lead screw nut, and the lead screw nut is in threaded connection with the lead screw; the driving module is in transmission connection with the lead screw nut; a braking module is arranged on the fixed platform and is configured to be used for applying rotation resistance to the lead screw so as to restrain the lead screw from rotating relative to the fixed platform. According to the utility model, under the condition that the screw rod nut keeps the same rotating speed, the greater the resistance constraint on the screw rod is, the higher the moving speed of the screw rod nut relative to the screw rod is, so that the displacement speed of the cutter is changed.

Description

Technical Field

[0001] This utility model relates to the field of food processor technology, and in particular to a transmission speed regulation structure for food processors. Background Technology

[0002] Existing technology, such as Chinese utility model patent document, publication number CN221616179U, discloses an ice cream machine, including a lower body and an upper body, the upper body being movable vertically relative to the lower body, an installation area for mounting a container being provided between the lower body and the upper body, a cutter shaft being rotatably mounted on the upper body above the installation area, and a cutter head being provided at the lower end of the cutter shaft; the ice cream machine is provided with a screw lifting mechanism for driving the upper body to move vertically relative to the lower body; a motor is provided in the upper body, the motor having a first output shaft and a second output shaft, the first output shaft being drivenly connected to the cutter shaft, and the second output shaft being drivenly connected to the screw lifting mechanism.

[0003] In existing technology, the function achieved is that a single motor drives both the rotation of the cutting tool and the movement of the platform. The technical problem with this transmission structure is that the rotation of the cutting tool and the movement of the platform have a fixed speed ratio. It cannot simultaneously adjust the platform's movement speed while the cutting shaft rotates, thus making it impossible to adjust the cutting tool's movement speed according to the specific characteristics of the food. Further improvements are needed. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a transmission speed regulation structure for a food processor.

[0005] A transmission speed control structure for a food processor designed for this purpose includes a fixed platform; a bowl mounted on the fixed platform, the bowl having a cavity for containing food; a movable platform movable relative to the fixed platform; a blade rotatably connected to the movable platform, the blade extending into the cavity; a drive module drively connected to the blade; a movable module including a lead screw rotatably mounted on the fixed platform, a lead screw nut rotatably mounted on the movable platform, the lead screw nut being threadedly connected to the lead screw; a drive module drively connected to the lead screw nut; and a braking module mounted on the fixed platform, configured to apply rotational resistance to the lead screw to constrain its rotation relative to the fixed platform.

[0006] Preferably, the drive module includes a drive motor mounted on the mobile platform, the motor shaft of the drive motor is connected to a first gear, the lead screw nut is connected to a second gear, the second gear is connected to the tool transmission, and the first gear and the second gear mesh with each other.

[0007] Preferably, the cutting tool includes a cutting shaft, one end of which is rotatably connected to the moving platform and the other end of which is provided with a cutting disc, the cutting disc being provided with first cutting teeth for rotating and beating food; the drive module is rotatably connected to the cutting shaft.

[0008] Preferably, the peripheral wall of the cutter head is provided with a second cutting tooth, which extends radially along the cutter head; the first cutting tooth extends axially along the cutter shaft.

[0009] Preferably, the braking module includes a brake rotor fixedly mounted on the lead screw, and a friction element movably mounted on the fixed platform; when the friction element contacts the brake rotor, it increases the rotational resistance of the lead screw by generating frictional force, thereby constraining the lead screw to rotate relative to the fixed platform.

[0010] Preferably, the friction element has a semi-circular structure, with one end of the friction element rotatably mounted on a fixed platform and the other end of the friction element rotatably connected to a first pull rod. A first speed control knob is rotatably mounted on the fixed platform, and the first pull rod is rotatably connected to the first speed control knob.

[0011] Preferably, friction pads are provided on the wall surface of the friction element facing the brake rotor.

[0012] Preferably, the braking module includes a braking rotor, a fixed magnetic ring frame, and a movable magnetic ring frame, with permanent magnets installed on both the fixed and movable magnetic ring frames. The fixed and movable magnetic ring frames are combined to form a magnetic ring, and the braking rotor is disposed within this magnetic ring and fixedly connected to a lead screw. The fixed magnetic ring frame is fixedly mounted on a fixed platform, while the movable magnetic ring frame is movable relative to the fixed platform. When the movable magnetic ring frame moves closer to or further away from the braking rotor, it changes the magnetic field strength and thus alters the rotational resistance of the lead screw.

[0013] Preferably, one end of the movable magnetic ring frame is rotatably connected to the fixed platform, and the other end of the movable magnetic ring frame is provided with a second pull rod. A second speed adjustment knob is rotatably provided on the fixed platform, and the second pull rod is rotatably connected to the second speed adjustment knob.

[0014] Preferably, the braking module includes stator magnetic poles, with fixed coils connected to the stator magnetic poles, coils disposed inside the fixed coils, and a braking rotor disposed between the fixed coils and the stator magnetic poles, the braking rotor being fixedly connected to a lead screw.

[0015] Compared with existing technologies, this invention features a braking module that, when it does not exert resistance on the lead screw, allows the lead screw and lead screw nut to rotate synchronously, keeping the moving platform suspended in one position. Simultaneously, the cutter rotates synchronously with the lead screw and lead screw nut to achieve a combined rotary-cracking motion. However, when the braking module exerts resistance on the lead screw, the lead screw is constrained by the resistance, and the lead screw nut can move upwards or downwards relative to the lead screw as it rotates, allowing the moving platform to displace the cutter. In this design, with the lead screw and nut maintaining the same rotational speed, the greater the resistance constrained on the lead screw, the faster the lead screw nut moves relative to the lead screw, thus changing the displacement speed of the cutter.

[0016] Compared with the prior art, this invention has the advantages of preventing motor overload and stall due to the rotation setting of the lead screw and the cooperation of the braking module. Since the motor needs to synchronously drive the tool to rotate and move during operation, when the tool is obstructed and cannot move, that is, when the movement resistance of the tool is greater than the resistance applied by the braking module, the lead screw nut rotates synchronously with the lead screw, and the moving platform will not move relative to the fixed platform. This achieves the state where the tool only rotates and does not move, so as to ensure the normal operation of the motor and avoid damage to the motor and transmission structure. Attached Figure Description

[0017] Figure 1 This is a 3D structural diagram of a food processor;

[0018] Figure 2 This is one of the schematic diagrams of the cross-sectional structure of a food processor;

[0019] Figure 3 This is the second cross-sectional structural diagram of a food processor;

[0020] Figure 4 This is a cross-sectional view of the food processor in use.

[0021] Figure 5 A schematic diagram of the structure of the bowl, extrusion elements, and cutting tools;

[0022] Figure 6 This is a schematic diagram showing the position of the extrusion element in the first position;

[0023] Figure 7 This is a schematic diagram showing the position of the extrusion element in the second position;

[0024] Figure 8 This is one of the schematic diagrams of the three-dimensional structure of the bowl and its lid;

[0025] Figure 9 This is the second schematic diagram of the three-dimensional structure of the bowl and its lid;

[0026] Figure 10 This is a schematic diagram of the cross-sectional structure of the bowl and its lid;

[0027] Figure 11 This is a schematic diagram showing the exploded structure of the bowl and its lid.

[0028] Figure 12 This is one of the three-dimensional structural schematic diagrams of an extrusion element;

[0029] Figure 13 This is the second schematic diagram of the three-dimensional structure of the extrusion element;

[0030] Figure 14 This is one of the schematic diagrams of the three-dimensional structure of a cutting tool;

[0031] Figure 15 This is the second schematic diagram of the three-dimensional structure of the cutting tool;

[0032] Figure 16 This is a schematic diagram of the first embodiment of the braking module;

[0033] Figure 17 This is a schematic diagram of a second embodiment of the braking module;

[0034] Figure 18 This is a schematic diagram of a third implementation of the braking module. Detailed Implementation

[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0038] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0039] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple groups" refers to two or more (including two groups), and "multiple pieces" refers to two or more (including two pieces).

[0041] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0043] like Figures 1 to 18As shown, the food processor includes a fixed platform 10; a bowl 20 mounted on the fixed platform 10, the bowl 20 having a cavity 201 for containing food, and an extrusion port 240 communicating with the cavity 201; a squeezing element 50 movably disposed within the cavity 201 to force food located in the cavity 201 to be extruded from the extrusion port 240; and an air passage 210 communicating with the cavity 201. The air inlet of the air passage 210 is connected to an air source, which supplies air to the air passage 210, and the airflow enters the cavity 201 to push the squeezing element 50 from a first position 202 to a second position. 203, to force food located in cavity 201 to be extruded from extrusion port 240; when extrusion element 50 is in the first position, extrusion element 50 and bowl 20 are coupled to each other to constrain their relative rotation; movable platform 30, movable platform 30 is movable relative to fixed platform 10; cutter 60, cutter 60 is rotatably connected to movable platform 30, cutter 60 extends into cavity 201; movable module 70, movable module 70 is configured to drive movable platform 30 to move linearly relative to fixed platform 10; drive module 40, drive module 40 is disposed on movable platform 30 and drively connected to movable module 70 and cutter 60.

[0044] In use, the user attaches the bowl 20 containing food to the fixed platform 10. In working mode, the food processor can perform whirl and extrusion modes.

[0045] In the swirling mode, the drive module synchronously drives the cutter 60 and the moving module 70. The moving module 70 drives the moving platform 30 to move linearly relative to the fixed platform 10, from the second position 203 to the first position 202, then resets and moves back to the second position 203, simultaneously rotating the cutter 60. In this mode, the cutter 60 can rotate and move synchronously to swirle and mix the food within the bowl 20.

[0046] In the extrusion mode, under the action of the air source, the airflow drives the extrusion element 50 to move from the first position 202 to the second position 203, so as to force the food located in the cavity 201 to be extruded from the extrusion port 240.

[0047] During use, the airflow drives the extrusion element 50 from the first position 202 to the second position 203 to complete the extrusion of food. Regarding the resetting of the extrusion element 50, the extrusion element 50 is manually reset. That is, after the food is extruded, the bowl 20 is removed from the fixed platform 10, and the bowl 20 and the extrusion element 50 are cleaned before the extrusion element 50 is installed into the cavity 201 and driven to move to the first position 202, thus completing the resetting.

[0048] In the rotary extrusion mode, when the blade 60 moves to the second position 203, it presses against the surface of the extrusion element 50. This step prevents the extrusion element 50 from freezing and becoming immobile as the food freezes in the bowl 20. The blade 60 presses against the extrusion element 50 to create a slight displacement of the extrusion element 50 relative to the bowl 20, breaking the frost between them and ensuring that the extrusion element 50 can move relative to the bowl 20, thereby extruding the food from the extrusion port 240.

[0049] like Figure 4 As shown in the diagram, the food processor is in use with the extrusion port 240 facing downwards. This allows the extrusion element to force the food in the cavity 201 to be extruded from the extrusion port 240, and then the food is extruded downwards so that the user can collect it below the extrusion port 240.

[0050] like Figure 1 As shown, the fixed platform 10 is provided with a number of guide posts 100, and the mobile platform 30 is slidably connected to the guide posts 100 to ensure the stability of the mobile platform 30 relative to the fixed platform 10.

[0051] The cavity 201 is a cylindrical chamber, and the extrusion element 50 is a disc structure. The two cooperate with each other to make the extrusion element 50 move within the cavity 201.

[0052] like Figures 2 to 4As shown, the moving module 70 includes a lead screw 710 rotatably mounted on the fixed platform 10, and a lead screw nut 720 rotatably mounted on the moving platform 30, which is threadedly connected to the lead screw 710. A drive module 40 is connected to the lead screw nut 720. A braking module 80 is mounted on the fixed platform 10, configured to apply rotational resistance to the lead screw 710 to constrain its rotation relative to the fixed platform 10. In this embodiment, the lead screw 710 is different from the lead screw in existing linear drive systems. Here, the lead screw 710 is rotatably mounted. When the braking module does not apply resistance to the lead screw, the lead screw and lead screw nut rotate synchronously, keeping the moving platform suspended in any position. Simultaneously, the cutting tool rotates, allowing the cutting tool to be suspended in any position for turning. However, when the braking module applies resistance to the lead screw, the lead screw is constrained by the resistance, and the lead screw nut can move upward or downward relative to the lead screw as it rotates, allowing the moving platform to drive the cutting tool to move. In this design, with the lead screw and nut maintaining the same rotational speed, the greater the resistance constraint on the lead screw, the faster the lead screw and nut move relative to the lead screw, thus altering the displacement speed of the blade. Therefore, under the action of the braking module 80, this food processor can, through a single drive module, continuously rotate the blade 60 while simultaneously controlling whether the blade 60 moves and its speed. This allows for adjustment of the blade 60's movement according to the specific food being processed, resulting in food with a better texture and meeting user needs.

[0053] like Figures 2 to 4 As shown, the drive module 40 includes a drive motor 410 mounted on the moving platform 30. The motor shaft of the drive motor 410 is connected to a first gear 420, and the lead screw nut 720 is connected to a second gear 430. The second gear 430 is connected to the cutter 60 in a transmission manner, and the first gear 420 and the second gear 430 mesh with each other.

[0054] The lead screw nut 720 and the second gear 430 are integrated into one piece.

[0055] like Figure 2 As shown, the blade 60 includes a blade shaft 610, one end of which is rotatably connected to the moving platform 30, and the other end is provided with a blade disc 620. The blade disc 620 is provided with first cutting teeth 630 for swirling and mixing food. The drive module 40 is rotatably connected to the blade shaft 610. During the rotation of the blade disc 620, the first cutting teeth 630 contact the food located in the cavity 201 to achieve swirling and mixing. As the moving platform 30 moves, it drives the blade disc 620 to move, thereby changing its position to achieve swirling and mixing at different positions.

[0056] like Figures 2 to 4As shown, a coupling 450 is rotatably mounted on the mobile platform 30. The cutter shaft 610 is connected to the coupling 450. The coupling 450 is equipped with a third gear 440, which meshes with the second gear 430.

[0057] The cutter shaft 610 is connected to the coupling 450. The two can be connected using existing connection structures, such as screw threads or threaded connections.

[0058] like Figure 3 and Figure 5 As shown, the peripheral wall of the cutter disc 620 is provided with a second cutting tooth 640, which extends radially along the cutter disc 620; the first cutting tooth 630 extends axially along the cutter shaft 610. The function of the second cutting tooth 640 is to clean food adhering to the peripheral wall of the cavity 201, preventing food from freezing on the peripheral wall of the cavity 201 and affecting the movement of the extrusion element 50. During the moving and rotating process of the cutter disc 620, the second cutting tooth 640 extending radially along the cutter disc 620 can crush the food located on the peripheral wall of the cavity 201, thereby ensuring that the extrusion element 50 can move in close contact with the peripheral wall of the cavity 201.

[0059] Multiple second cutting teeth are arranged circumferentially on the cutter head.

[0060] like Figure 3 and Figure 6 As shown, the bowl 20 is connected to the bowl lid 220, and the extrusion port 240 is provided on the bowl lid 220.

[0061] like Figure 6 and Figure 7 As shown, the bowl 20 has an opening on its upper side, and the bowl lid 220 is located on the upper side of the bowl 20. Under the action of airflow, the extrusion element 50 moves from the first position 202 to the second position 203, which is to say, it moves from bottom to top, so as to move the food from bottom to top until it is extruded from the extrusion port 240.

[0062] like Figure 3 and Figure 6 As shown, the bowl lid 220 is mounted on the fixed platform 10. The bowl piece 20 and the bowl lid 220 are detachably connected, and the two can be connected by a threaded structure or a screw-on structure.

[0063] The bowl cover 220 is provided with a shaft hole 222, and the cutter shaft 610 extends through the shaft hole 222 into the cavity 201 inside the bowl 20, and the cutter shaft 610 can be moved relative to the shaft hole 222.

[0064] The bowl lid 220 is provided with a screw fastener structure 221, which is screwed to the fixed platform 10.

[0065] like Figure 8As shown, the bowl lid 220 is provided with an air inlet 230, which is connected to the air passage 210. The advantage of setting the air inlet 230 on the bowl lid 220 is that, since the air source needs to be set on the fixed platform 10, the connection of the air source does not affect the disassembly of the bowl 20 each time it is disassembled, which is convenient for operation.

[0066] like Figure 7 and Figure 10 As shown, the bowl 20 is provided with an air inlet 280, and a connecting air chamber 270 is provided between the bowl lid 220 and the bowl 20; the air inlet 230, the connecting air chamber 270, the air inlet 280 and the air passage 210 are connected in sequence.

[0067] like Figure 6 As shown, a boss 204 is provided on the outer wall of the bowl component 20, and a sealing ring 290 is provided on the boss 204. When the bowl lid 220 is connected to the bowl component 20, the protruding ring 223 of the bowl lid 220 abuts against the sealing ring 290, and the bowl lid 220, the sealing ring 290, and the bowl component 20 form a communicating air cavity 270. That is, the communicating air cavity 270 is automatically formed when the bowl lid 220 and the bowl component 20 are connected.

[0068] When the extrusion element 50 is assembled to the first position 202, there is an air gap between the extrusion element 50 and the bottom wall of the cavity 201. Airflow enters the air gap through the air passage 210, and the airflow in the air gap pushes the entire extrusion element 50 to move relative to the bowl 20. The air gap allows the incoming airflow to be evenly distributed, thereby ensuring the stability of pushing the extrusion element.

[0069] An air source is provided on the fixed platform 10, and the air source is connected to the air inlet 230 via a pipe. The air source is an air pump, and the specifications of the air pump are selected according to the required thrust to enable the airflow to drive the extrusion element 50 to move. The air pump outputs airflow, which is sequentially connected through the pipe, the air inlet 230, the connecting air chamber 270, the air inlet 280, and the air passage 210.

[0070] See Figure 6 The bowl lid 220 is provided with a material inlet 250 that communicates with the cavity 201. The function of the material inlet 250 is that after the food has been whirled and mixed, the material inlet 250 can add fluid material into the cavity 201 under the action of the material pump, so that the newly added material can be mixed with the food that has been whirled and mixed.

[0071] Both the material inlet 250 and the extrusion outlet 240 are equipped with valve bodies. The valve bodies are one-way valves. When applied to the material inlet 250, the valve body opens in one direction, allowing external material to enter the cavity 201 through the material inlet 250. Simultaneously, when applied to the extrusion outlet 240, the valve body opens in one direction, allowing food within the cavity 201 to be extruded to the outside through the extrusion outlet 240 under the action of the extrusion element.

[0072] like Figure 3 and Figure 5 As shown, the extrusion element 50 is provided with a first coupling part 510, and the bottom wall of the cavity 201 is provided with a second coupling part 260. The first coupling part 510 and the second coupling part 260 are interlocked to constrain the relative rotation of the extrusion element 50 and the bowl 20. During food preparation, the extrusion element 50 needs to be installed into the cavity 201 and fitted against the bottom wall of the cavity 201, with the first coupling part 510 and the second coupling part 260 interlocked. After this interlocking, the extrusion element 50 and the bowl 20 are constrained, preventing the extrusion element 50 from rotating relative to the bowl 20 when it is in the first position 202. This prevents the food frozen on the extrusion element 50 from rotating due to the rotation of the extrusion element 50 during the swirl of the blade 60. This ensures the blade 60 can swirl normally, preventing the food from rotating with the blade 60 and thus hindering the swirl process.

[0073] like Figure 7 As shown, the bottom wall of the cavity 201 is provided with a connecting hole 200, which is connected to the cavity 201 and the air passage 210. The connecting hole 200 serves to connect the cavity and allows the airflow inside the air passage 210 to smoothly enter the cavity 201.

[0074] The connecting hole 200 is a non-circular hole. The extrusion element 50 is provided with a third coupling part 500. The shape of the third coupling part 500 is consistent with the shape of the connecting hole 200, and the third coupling part 500 is movably inserted into the connecting hole 200. The non-circular hole is provided so that after the third coupling part 500 is inserted into the connecting hole 200, the extrusion element 50 can be constrained to rotate relative to the bowl 20.

[0075] The extrusion element 50 is fitted to the peripheral wall of the cavity 201. The fitting is designed to ensure airtightness so that the airflow entering from the air passage acts on the extrusion element 50 to push the extrusion element 50 to move.

[0076] like Figure 2 and Figure 3 As shown, a sealing ring 520 is provided on the wall surface where the extrusion element 50 fits against the peripheral wall of the cavity 201. The sealing ring 520 fits against the peripheral wall of the cavity 201. The function of the sealing ring 520 is to enhance the sealing between the extrusion element 50 and the peripheral wall of the cavity 201, so as to avoid air leakage and affect the thrust of the airflow in pushing the extrusion element 50.

[0077] like Figure 12As shown, the extrusion element 50 is equipped with an annular cutter 530, which fits against the peripheral wall of the cavity 201. The annular cutter 530 extends from the first position 202 to the second position 203. The purpose of the annular cutter 530 is to clean the food located on the peripheral wall of the cavity 201, especially some ice particles remaining on the peripheral wall, so as to avoid them affecting the movement of the extrusion element 50.

[0078] like Figure 16 As shown, in a first embodiment of the braking module 80, a brake rotor 810 is fixedly mounted on a lead screw 710, and a friction element 820 is movably mounted on a fixed platform 10. When the friction element 820 contacts the brake rotor 810, it generates friction to increase the rotational resistance of the lead screw 710, thereby constraining the lead screw 710 to rotate relative to the fixed platform 10. In this embodiment, the effect achieved is that, under the action of contact friction, the rotational resistance of the lead screw 710 is increased. The greater the friction, the greater the rotational resistance experienced by the lead screw. With the drive motor 410 maintaining the same rotational speed, the linear movement speed of the lead screw nut 720 relative to the lead screw 710 is faster. Conversely, when the friction is smaller, the rotational resistance experienced by the lead screw 710 is smaller, and the linear movement speed of the lead screw nut 720 relative to the lead screw 710 is slower.

[0079] like Figure 16 As shown, the friction element 820 has a semi-circular structure. One end of the friction element 820 is rotatably mounted on the fixed platform 10, and the other end is rotatably connected to a first pull rod 824. A first speed control knob 823 is rotatably mounted on the fixed platform 10, and the first pull rod 824 is rotatably connected to the first speed control knob 823. Under the action of the first speed control knob 823, the first pull rod 824 drives the friction element 820 to rotate around the first main shaft 822, so that as the first speed control knob 823 rotates forward or backward, the friction element 820 gradually moves closer to or further away from the brake rotor 810.

[0080] The first speed control knob 823 can be rotatably mounted on the fixed platform 10 using a rotary damper. This is to prevent the first speed control knob 823 from rotating under the action of other external forces, which would cause a change in the friction coefficient between the friction element 820 and the brake rotor 810 and thus affect the moving speed of the lead screw nut 720.

[0081] like Figure 16 As shown, friction element 820 has friction pads 821 disposed on the wall surface facing brake rotor 810. The friction pads 821 improve wear resistance so that they are not easily damaged during long-term contact friction.

[0082] like Figure 17As shown, in a second embodiment of the braking module 80, the braking module 80 includes a braking rotor 810, a fixed magnetic ring frame 831, and a movable magnetic ring frame 832. The fixed magnetic ring frame 831 and the movable magnetic ring frame 832 are equipped with permanent magnets. The fixed magnetic ring frame 831 and the movable magnetic ring frame 832 combine to form a magnetic ring. The braking rotor 810 is disposed within this magnetic ring and fixedly connected to the lead screw 710. The fixed magnetic ring frame 831 is fixedly disposed on the fixed platform 10, and the movable magnetic ring frame 832 is movable relative to the fixed platform 10. When the movable magnetic ring frame 832 approaches or moves away from the braking rotor 810, it changes the magnetic field strength, thereby changing the rotational resistance of the lead screw 710. As the movable magnetic ring frame 832 moves relative to the fixed platform 10, as it gradually moves away from the braking rotor 810, the magnetic field strength gradually weakens, and the rotational resistance of the lead screw 710 gradually decreases, thereby reducing the moving speed of the lead screw nut 720. Conversely, as the moving magnetic ring frame 832 gradually approaches the brake rotor 810, the magnetic field strength gradually increases, and the rotational resistance of the lead screw 710 gradually increases, thereby increasing the moving speed of the lead screw nut 720.

[0083] like Figure 17 As shown, one end of the movable magnetic ring frame 832 is rotatably connected to the fixed platform 10, and the other end of the movable magnetic ring frame 832 is provided with a second pull rod 835. A second speed adjustment knob 834 is rotatably mounted on the fixed platform 10, and the second pull rod 835 is rotatably connected to the second speed adjustment knob 834. Under the action of the rotation of the second speed adjustment knob 834, the second pull rod 835 drives the movable magnetic ring frame 832 to rotate around the second main shaft 833, so that as the second speed adjustment knob 834 rotates forward or backward, the movable magnetic ring frame 832 gradually moves closer to or further away from the brake rotor 810.

[0084] The second speed control knob 834 can be rotatably mounted on the fixed platform 10 using a rotary damper. This is to prevent the second speed control knob 834 from rotating under the action of other external forces, which would cause a change in the distance between the moving magnetic ring frame 832 and the brake rotor 810 and thus affect the moving speed of the lead screw nut 720.

[0085] like Figure 18 As shown, in a third embodiment of the braking module 80, the braking module 80 includes a stator magnetic pole 860, a fixed coil 850 connected to the stator magnetic pole 860, a coil 840 disposed within the fixed coil 850, and a braking rotor 810 disposed between the fixed coil 850 and the stator magnetic pole 860. The braking rotor 810 is fixedly connected to the lead screw 710. In this embodiment, the principle of the braking module 80 is the same as that of the existing hysteresis brake. By energizing the coil 840, the excitation current of the coil 840 is changed, thereby adjusting the magnetic field strength to control the torque of the braking rotor 810, thereby changing the rotational resistance of the lead screw 710 and thus constraining the rotation of the lead screw 710.

[0086] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0087] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transmission speed control structure for a food processor, the food processor including a fixed platform (10); Bowl (20), which is mounted on the fixed platform (10), and the bowl (20) is provided with a cavity (201) for holding food; A mobile platform (30) is movable relative to the fixed platform (10); A cutting tool (60) is rotatably connected to the moving platform (30) and extends into the cavity (201); A drive module (40) is connected to the cutting tool (60) via a transmission connection. Its features are: The mobile module (70) includes a lead screw (710) rotatably mounted on the fixed platform (10), and the mobile platform (30) is rotatably mounted with a lead screw nut (720), which is threadedly connected to the lead screw (710). The drive module (40) is connected to the lead screw nut (720) for transmission; A braking module (80) is provided on the fixed platform (10), and the braking module (80) is configured to apply rotational resistance to the lead screw (710) to constrain the lead screw (710) to rotate relative to the fixed platform (10).

2. The transmission speed regulation structure for a food processor according to claim 1, characterized in that: The drive module (40) includes a drive motor (410) mounted on a moving platform (30). The motor shaft of the drive motor (410) is connected to a first gear (420), and the lead screw nut (720) is connected to a second gear (430). The second gear (430) is connected to the cutting tool (60) in a transmission connection, and the first gear (420) and the second gear (430) mesh with each other.

3. The transmission speed regulation structure for a food processor according to claim 1, characterized in that: The blade (60) includes a blade shaft (610), one end of which is rotatably connected to the moving platform (30), and the other end is provided with a blade disc (620), which is provided with a first blade tooth (630) for rotating and beating food; The drive module (40) is rotatably connected to the cutter shaft (610).

4. The transmission speed regulation structure for a food processor according to claim 3, characterized in that: The peripheral wall of the cutter head (620) is provided with a second cutting tooth (640), which extends radially along the cutter head (620); The first cutting tooth (630) extends along the axial direction of the cutting shaft (610).

5. The transmission speed regulation structure for a food processor according to claim 1, characterized in that: The braking module (80) includes a braking rotor (810) fixedly mounted on a lead screw (710), and a friction element (820) is movably mounted on the fixed platform (10); When the friction element (820) contacts the brake rotor (810), it generates frictional force to increase the rotational resistance of the lead screw (710), thereby constraining the lead screw (710) to rotate relative to the fixed platform (10).

6. The transmission speed regulation structure for a food processor according to claim 5, characterized in that: The friction element (820) has a semi-circular structure. One end of the friction element (820) is rotatably mounted on the fixed platform (10), and the other end of the friction element (820) is rotatably connected to a first pull rod (824). A first speed adjustment knob (823) is rotatably mounted on the fixed platform (10), and the first pull rod (824) is rotatably connected to the first speed adjustment knob (823).

7. The transmission speed regulation structure for a food processor according to claim 5, characterized in that: The friction element (820) has a friction plate (821) disposed on the wall surface facing the brake rotor (810).

8. The transmission speed regulation structure for a food processor according to claim 1, characterized in that: The braking module (80) includes a braking rotor (810), a fixed magnetic ring frame (831), and a movable magnetic ring frame (832), wherein the fixed magnetic ring frame (831) and the movable magnetic ring frame (832) are provided with permanent magnets; The fixed magnetic ring frame (831) and the movable magnetic ring frame (832) are combined to form a magnetic ring, and the brake rotor (810) is disposed in the magnetic ring and fixedly connected to the lead screw (710); The fixed magnetic ring frame (831) is fixedly mounted on the fixed platform (10), and the movable magnetic ring frame (832) is movable relative to the fixed platform (10); When the movable magnetic ring frame (832) approaches or moves away from the brake rotor (810), the rotational resistance of the lead screw (710) is changed by changing the magnetic field strength.

9. A transmission speed regulation structure for a food processor according to claim 8, characterized in that: One end of the movable magnetic ring frame (832) is rotatably connected to the fixed platform (10), and the other end of the movable magnetic ring frame (832) is provided with a second pull rod (835). A second speed adjustment knob (834) is rotatably provided on the fixed platform (10), and the second pull rod (835) is rotatably connected to the second speed adjustment knob (834).

10. The transmission speed regulation structure for a food processor according to claim 1, characterized in that: The braking module (80) includes a stator magnetic pole (860), the stator magnetic pole (860) is connected to a fixed ring (850), a coil (840) is provided inside the fixed ring (850), a braking rotor (810) is provided between the fixed ring (850) and the stator magnetic pole (860), and the braking rotor (810) is fixedly connected to the lead screw (710).

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