Chopping machine

Abstract

The utility model relates to a chopping machine which comprises a main machine, a cup cover, a chopping knife assembly, a cup shell and a stirring paddle assembly. The cup cover is assembled on the cup shell, the main machine is assembled on the cup cover, a motor is arranged in the main machine, and the chopping knife assembly or the stirring paddle assembly is arranged in the cup shell; a gear box assembly in transmission with the motor is arranged on the main machine, the gear box assembly comprises a first-stage output outer connector and a second-stage output inner connector which rotate synchronously, and the first-stage output outer connector and the second-stage output inner connector are arranged on the same axis; the first-stage output outer connector is connected with a cutter connector in the chopping cutter assembly in a clamped mode and used for transmission, and the second-stage output inner connector is connected with a paddle connector in the stirring paddle assembly in a clamped mode and used for transmission. According to the chopping machine, two different functions of chopping and stirring are achieved through the main machine, the replaceable chopping knife assembly and the replaceable stirring paddle assembly, a user does not need to purchase multiple pieces of equipment with a single function, and space and cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of food chopping, in particular to a chopper. Background Art

[0002] As people's living standards continue to improve, demands for chopper functionality are becoming increasingly diverse. Existing choppers have limitations in terms of functionality, primarily due to the fact that most offer only a single output speed, which significantly restricts their application in various scenarios. For example, when processing ingredients of varying hardness and texture, a single output speed may not be sufficient for efficient chopping or blending, thus requiring further improvement. Utility Model Content

[0003] In order to overcome at least one of the above-mentioned defects of the prior art, according to one aspect of the present invention, a shredder is provided, comprising a main unit, a cup cover, a shredder blade assembly, a cup housing, and a stirring paddle assembly;

[0004] The cup cover is assembled on the cup shell, the main unit is assembled on the cup cover and has a motor in the main unit, and the chopping knife assembly or the stirring paddle assembly is installed in the cup shell;

[0005] The main engine is provided with a gearbox assembly that is driven by the motor. The gearbox assembly includes a first-stage output external connector and a second-stage output internal connector that rotate synchronously. The first-stage output external connector and the second-stage output internal connector are arranged on the same axis.

[0006] The primary output external connector is clamped with the knife connector in the chopping knife assembly and is used for transmission, and the secondary output internal connector is clamped with the paddle connector in the stirring paddle assembly and is used for transmission.

[0007] In one embodiment of the present application, the primary output external connector is disposed above the secondary output internal connector.

[0008] In one embodiment of the present application, the primary output external connector is cylindrical and has an outward convex structure, and is matched with the inward concave knife connector in the chopping knife assembly for transmission.

[0009] In one embodiment of the present application, the secondary output internal connector is in the shape of a circumferential ring and has an inner concave structure, and is matched with the outer convex paddle connector in the stirring paddle assembly for transmission.

[0010] In one embodiment of the present application, the primary output external connector is cylindrical and has an outward convex structure, the secondary output internal connector is circumferentially annular and has an inward concave structure, and the primary output external connector is disposed inside the secondary output internal connector.

[0011] In one embodiment of the present application, the gearbox assembly includes a primary sun gear, a motor bracket, a primary planet gear, a primary planet bracket, an outer planet gear housing, a secondary sun gear, a secondary planet gear, and a secondary lower planet bracket;

[0012] The primary center gear is meshed with the primary planet gear, which is fixed to the motor bracket via the primary planet gear bracket. The primary planet gear is meshed with the outer planet gear housing, which is coaxially fixed to the secondary center gear. The primary output external connector is coaxially fixed to the bottom of the secondary center gear.

[0013] The secondary center gear is meshed with the secondary planet gear, the secondary planet gear is coaxially fixed to the secondary lower planet support, and the secondary output inner connector is coaxially fixed to the bottom of the secondary lower planet support.

[0014] In one embodiment of the present application, the gearbox assembly includes a secondary upper planetary carrier, and the secondary planetary gears are fixed between the secondary lower planetary carrier and the secondary upper planetary carrier.

[0015] In one embodiment of the present application, the primary output external connector is in the shape of a circumferential ring and has an inner concave structure, and is matched with the outer convex knife connector in the chopping knife assembly for transmission.

[0016] In one embodiment of the present application, the secondary output internal connector is cylindrical and has a convex structure, and is matched with the concave paddle connector in the stirring paddle assembly for transmission.

[0017] In one embodiment of the present application, the chopping blade assembly and the stirring paddle assembly share a cup housing;

[0018] Alternatively, the chopping blade assembly and the stirring paddle assembly are each equipped with a cup housing, and the height of the cup housing equipped with the stirring paddle assembly is higher than the height of the cup housing equipped with the chopping blade assembly. In summary, the shredder provided by the present invention has the following technical effects:

[0019] The shredder of the present application achieves two different functions, shredding and stirring, through a main unit and replaceable shredding blade assembly and stirring paddle assembly. Users do not need to purchase multiple single-function devices, saving space and costs. In addition, the design of the gearbox assembly enables efficient power transmission and precise control of speed. Different output connectors are optimized for the different needs of shredding and stirring, ensuring efficient and stable operation. At the same time, the assembly method of the cup lid, cup body, blades and stirring paddle is simple and convenient, allowing users to quickly switch between different functional components. The snap-on connection method makes the installation and removal of components faster and easier to clean and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic structural diagram of a shredder according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled state of the shredder according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the main unit, the chopping blade assembly, and the stirring paddle assembly in the chopping machine according to an embodiment of the present invention;

[0023] Figure 4 A cross-sectional view of the assembly structure of the main unit and the gear box assembly in the shredder according to an embodiment of the present invention;

[0024] Figure 5 A cross-sectional view of a gearbox assembly in a shredder according to an embodiment of the present invention;

[0025] Figure 6 A cross-sectional view of a shredder according to an embodiment of the present invention having a shredder blade assembly assembled therein;

[0026] Figure 7 A cross-sectional view of a chopper assembled with a stirring paddle assembly according to an embodiment of the present invention;

[0027] Illustrations: 1. Main unit; 2. Cup cover; 3. Chopping knife assembly; 31. Knife connector; 32. Knife shaft; 33. Blade; 4. Cup shell; 5. Stirring paddle assembly; 51. Paddle connector; 52. Paddle shaft; 53. Paddle; 6. Gearbox assembly; 61. Primary center gear; 62. Motor bracket; 63. Primary planetary gear; 64. Primary planetary bracket; 65. Outer planetary gear housing; 66. Secondary center gear; 67. Secondary planetary gear; 68. Secondary lower planetary bracket; 610. Secondary upper planetary bracket; 613. Primary output external connector; 615. Secondary output internal connector. DETAILED DESCRIPTION

[0028] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] This application discloses a shredder. To better understand this application, the shredder is first described. A shredder is a device that uses a motor to drive a gearbox or other transmission mechanism to drive a cutter to rotate, thereby cutting and crushing food and objects.

[0032] Currently, existing choppers have limitations in terms of functionality. Most have only a single output speed, which significantly restricts their application in various scenarios. For example, when processing food of varying hardness and texture, a single output speed may not be sufficient for efficient chopping or blending.

[0033] In order to solve the above problems, the shredder of the present application is provided with a two-stage output structure and is connected to different large cutters through different connection methods, so that the shredder can realize multifunctional technology, thereby providing a better user experience.

[0034] The following specific combination Figure 1-Figure 7 To describe the shredder of the present application.

[0035] Specifically, the shredder includes a main unit 1, a cup cover 2, a shredder blade assembly 3, a cup shell 4 and a stirring paddle assembly 5; the cup cover 2 is assembled on the cup shell 4, the main unit 1 is assembled on the cup cover 2 and the main unit 1 has a motor, and the shredder blade assembly 3 or the stirring paddle assembly 5 is installed in the cup shell 4; the main unit 1 is provided with a gearbox assembly 6 that is driven by the motor, and the gearbox assembly 6 includes a first-level output external connector 613 and a second-level output internal connector 615 that rotate synchronously, and the first-level output external connector 613 and the second-level output internal connector 615 are arranged on the same axis; the first-level output external connector 613 is clamped with the blade connector 31 in the shredder blade assembly 3 and is used for transmission, and the second-level output internal connector 615 is clamped with the paddle connector 51 in the stirring paddle assembly 5 and is used for transmission.

[0036] When the shredder is started, the motor in the main unit 1 begins to operate, and the generated power is transmitted and converted through the gearbox assembly 6. The gears in the gearbox assembly 6 cooperate with each other to convert the high-speed rotation of the motor into different speeds suitable for the shredder assembly 3 and the stirring paddle assembly 5. The primary output external connector 613 and the secondary output internal connector 615 rotate synchronously under the action of the gearbox.

[0037] When a chopping operation is required, the cup shell 4 equipped with the chopping knife assembly 3 can be assembled with the cup cover 2, and the cup cover 2 can be assembled on the main unit 1. At this time, the power of the main unit 1 is transmitted to the first-level output external connector 613 through the gear box assembly 6. The first-level output external connector 613 is engaged with the knife connector 31 in the chopping knife assembly 3, thereby driving the chopping knife assembly 3 to rotate at high speed. The chopping knife quickly cuts and crushes the food in the cup shell 4 to realize the chopping function.

[0038] When stirring operation is required, the cup shell 4 equipped with the stirring paddle assembly 5 can be assembled with the cup cover 2, and the cup cover 2 can be assembled on the main unit 1. The power of the main unit 1 is transmitted to the secondary output internal connector 615 through the gear box assembly 6. The secondary output internal connector 615 is engaged with the paddle connector 51 in the stirring paddle assembly 5, thereby driving the stirring paddle assembly 5 to rotate at an appropriate speed. The stirring paddle stirs the liquid or semi-liquid substance in the cup shell 4 to achieve the stirring function. It should be noted that chopping operation and stirring operation are two independent operations. Each time a different operation is performed, only one corresponding accessory is assembled, that is, when chopping operation is performed, the chopping knife assembly 3 is assembled; when stirring operation is performed, the stirring paddle assembly 5 is assembled.

[0039] It can be seen that the shredder of the present application realizes two different functions of chopping and stirring through a main unit 1 and a replaceable chopping blade assembly 3 and a stirring paddle assembly 5. Users do not need to purchase multiple single-function devices, saving space and cost. In addition, the design of the gearbox assembly 6 can achieve efficient power transmission and precise control of the rotation speed. Different output connectors are optimized for the different needs of chopping and stirring, ensuring efficient and stable operation. At the same time, the assembly method of the cup cover 2, cup body 4, knife and stirring paddle is simple and convenient. Users can quickly switch between different functional components. The snap-on connection method makes the installation and disassembly of the components faster and easier to clean and maintain.

[0040] Specifically, as shown in the drawings, the shredder blade assembly 3 may include a blade shaft 32 , a blade connector 31 disposed on the top of the blade shaft 32 , and at least one blade 33 disposed on the circumferential outer side of the blade shaft 32 .

[0041] Specifically, as shown in the accompanying drawings, the stirring paddle assembly 5 may specifically include a paddle shaft 52 , a paddle connector 51 disposed on the top of the paddle shaft 52 , and at least one paddle blade 53 disposed on the circumferential outer side of the paddle shaft 52 .

[0042] Specifically, the primary output external connector 613 is disposed above the secondary output internal connector 615 .

[0043] This arrangement fully utilizes vertical space, making the entire chopper more compact. It allows for the placement of two connectors with different functions within the limited space of the main unit 1, reducing the overall size of the device and facilitating storage and use. It is particularly suitable for space-constrained environments such as home kitchens. Furthermore, this top-to-bottom layout makes switching between the chopping and blending functions more intuitive and convenient. Users can easily select the appropriate connector and install the components as needed, eliminating the need for complex steps and improving ease of use. Furthermore, users can quickly identify the connection locations for different functions, avoiding operational errors and facilitating device maintenance.

[0044] Specifically, the primary output external connector 613 is cylindrical and has an outwardly convex structure, and is matched with the inwardly concave blade connector 31 in the chopping blade assembly 3 for transmission.

[0045] Because the primary output external connector 613 is cylindrical and has a convex structure, when assembled with the shredder blade assembly 3, the convex portion precisely inserts into the concave blade connector 31 within the shredder blade assembly 3. This tight fit allows power to be smoothly transmitted from the primary output external connector 613 to the shredder blade assembly 3, driving the shredder blade to rotate at high speed. As can be seen, the cylindrical convex structure and the concave blade connector 31 precisely match, ensuring that power is not shifted or lost during transmission. This precise transmission method enables the shredder blade to operate at a stable speed and power, improving shredding efficiency and quality. Furthermore, this structural design makes installation and disassembly of the shredder blade assembly 3 very simple. The user simply aligns the concave blade connector 31 of the shredder blade assembly 3 with the convex portion of the primary output external connector 613 and gently pushes to complete assembly. Disassembly is also very convenient, making it easy for the user to clean and maintain.

[0046] Of course, in other embodiments, the convex and concave structures can also be designed in reverse, that is, the first-stage output external connector 613 is circumferentially annular and has a concave structure, and is matched with the convex blade connector 31 in the shredder blade assembly 3 for transmission, which can also achieve the above-mentioned functions and effects.

[0047] Specifically, the secondary output internal connector 615 is in the shape of a circumferential ring and has an inner concave structure, and is matched with the outer convex paddle connector 51 in the stirring paddle assembly 5 for transmission.

[0048] When the stirring paddle assembly 5 is installed in place, the protruding paddle connector 51 in the stirring paddle assembly 5 is just embedded in the concave part of the secondary output internal connector 615. Through this cooperation, power is transmitted from the secondary output internal connector 615 to the stirring paddle assembly 5, driving the stirring paddle to rotate and realizing the stirring function. It can be seen that the annular secondary output internal connector 615 cooperates with the protruding paddle connector 51 to provide a larger contact area, making the power transmission more stable. During the stirring process, the stirring paddle can rotate at a uniform speed to avoid jitter or instability, thereby improving the stirring effect. In addition, this structural design makes the installation and disassembly of the stirring paddle assembly 5 very convenient. The user can easily insert or pull out the stirring paddle assembly 5 into or out of the secondary output internal connector 615, which is convenient for cleaning and maintenance. At the same time, it is also convenient for the user to replace different types of stirring paddle assemblies 5 according to different stirring needs.

[0049] Of course, in other embodiments, the convex and concave structures can also be designed in reverse, that is, the secondary output internal connector 615 is cylindrical and has a convex structure, and is matched with the concave paddle connector 51 in the stirring paddle assembly 5 for transmission, which can also achieve the above-mentioned functions and effects.

[0050] Specifically, the primary output external connector 613 is cylindrical and has an outward convex structure, the secondary output internal connector 615 is circumferentially annular and has an inward concave structure, and the primary output external connector 613 is disposed inside the secondary output internal connector 615 .

[0051] This structural design allows the primary output external connector 613 and the secondary output internal connector 615 to nest with each other in space, effectively utilizing the limited space and making the structure of the entire shredder more compact. This not only reduces the size of the device, making it easier to store and carry, but also allows multiple functions to be achieved in a smaller space. In addition, connectors of different shapes and positions provide users with clear functional distinctions. Users can easily determine whether to perform a shredding operation or a stirring operation based on the characteristics of the connector, avoiding the possibility of incorrect operation. This design also makes switching between different functions more intuitive and convenient. At the same time, this structural design makes the installation and disassembly of the shredder blade assembly 3 and the stirring paddle assembly 5 more convenient. Users can easily connect or separate the corresponding components to the connector, making it easier to clean, maintain, and replace different functional components, thereby extending the service life of the equipment.

[0052] Specifically, the gearbox assembly 6 includes a primary center tooth 61, a primary planetary gear 63, an outer planetary gear housing 65, a secondary center tooth 66, a secondary planetary gear 67 and a secondary lower planetary bracket 68; the primary center tooth 61 is engaged with the primary planetary gear 63 and is used to drive the primary planetary gear 63 to rotate, the primary planetary gear 63 is engaged with the outer planetary gear housing 65, the outer planetary gear housing 65 and the secondary center tooth 66 are coaxially fixed, and the primary output outer connector 613 is coaxially fixed to the bottom of the secondary center tooth 66; the secondary center tooth 66 is engaged with the secondary planetary gear 67, the secondary planetary gear 67 is coaxially fixed to the secondary lower planetary bracket 68, and the secondary output inner connector 615 is coaxially fixed to the bottom of the secondary lower planetary bracket 68.

[0053] When the motor of main unit 1 is started, power is first transmitted to the primary center gear 61 of gearbox assembly 6. This center gear 61 begins to rotate and meshes with the primary planetary gears 63. Since the primary planetary gears 63 are fixed to motor bracket 62 via primary planetary bracket 64, this not only ensures the stability of the primary planetary gears 63 during movement but also limits their orbital motion, causing them to rotate only on their own. Furthermore, the primary planetary gears 63 mesh with the outer planetary gear housing 65, transmitting power to the outer planetary gear housing 65 and causing it to rotate. Since the outer planetary gear housing 65 is coaxially fixed to the secondary center gear 66, the rotation of the outer planetary gear housing 65 drives the synchronous rotation of the secondary center gear 66. At this point, the primary output external connector 613, coaxially fixed to the bottom of the secondary center gear 66, also rotates. When connected to the shredder assembly 3, it drives the shredder assembly 3 to rotate at high speed, achieving the shredding function.

[0054] As the secondary center tooth 66 rotates, the secondary planetary gear 67 meshing with it begins to revolve and rotate around the secondary center tooth 66. The secondary planetary gear 67 is coaxially fixed to the secondary lower planetary bracket 68. The rotation of the secondary planetary gear 67 drives the secondary lower planetary bracket 68 to rotate synchronously, and the secondary output internal connector 615 is coaxially fixed to the bottom of the secondary lower planetary bracket 68, so the secondary output internal connector 615 also starts to rotate. When the stirring paddle assembly 5 is connected, it can drive the stirring paddle assembly 5 to rotate to achieve the stirring function.

[0055] It can be seen that the shredder of the present application can achieve different speed outputs through a multi-stage transmission structure including the first-stage center gear 61, the first-stage planetary gear 63, the outer planetary gear housing 65, the second-stage center gear 66, and the second-stage planetary gear 67, meeting the speed requirements of the different functions of shredding and stirring. This multi-stage speed change design improves the efficiency of power transmission and enables the motor's power to be fully utilized. In addition, the reasonable layout of the various gears and components makes the gearbox assembly 6 compact and occupies a small space, making it easy to install in the shredder main unit 1; the planetary gear transmission has high stability and load-bearing capacity, can withstand large torque and load, and ensure the stability and reliability of the equipment during operation; at the same time, because the first-stage output external connector 613 and the second-stage output internal connector 615 respectively achieve independent power output through different transmission paths, they can be flexibly connected to the shredder blade assembly 3 or the stirring paddle assembly 5 as needed to achieve independent operation of the shredding and stirring functions, meeting the different usage needs of users.

[0056] Specifically, the gearbox assembly 6 includes a secondary upper planetary support 610 , and the secondary planetary gears 67 are fixed between the secondary lower planetary support 68 and the secondary upper planetary support 610 .

[0057] During operation, the movement of the secondary planetary gears 67 drives the secondary lower planetary bracket 68 and the secondary upper planetary bracket 610 to rotate together. Since the secondary output internal connector 615 is coaxially fixed to the bottom of the secondary lower planetary bracket 68, when the secondary output internal connector 615 is connected to the stirring paddle assembly 5, power can ultimately be transmitted to the stirring paddle assembly 5. It can be seen that the secondary planetary gears 67 are fixed between the secondary lower planetary bracket 68 and the secondary upper planetary bracket 610, making the secondary planetary gears 67 more stable during movement. This fixing method can prevent the secondary planetary gears 67 from shifting or deforming when subjected to large torque, ensuring the stability and reliability of power transmission. In addition, the secondary upper planetary bracket 610 and the secondary lower planetary bracket 68 work together to make the secondary planetary gears 67 more evenly stressed in all directions. At the same time, the structure of the entire gearbox assembly 6 is more robust and can withstand greater loads.

[0058] Specifically, the chopping blade assembly 3 and the stirring paddle assembly 5 can share a cup shell 4. With this arrangement, only one cup shell 4 is used, which reduces the space occupied by the equipment. For users with limited kitchen space, this design is very practical and can avoid the problems of clutter and excessive space occupied by multiple cup shells 4. In addition, there is no need to equip independent cup shells 4 for the chopping and stirring functions, which reduces production costs. This makes the product more competitive in price and saves consumers purchase costs. At the same time, users do not need to frequently replace different cup shells 4 during use, making operation easier. It is only necessary to replace the chopping blade assembly 3 or the stirring paddle assembly 5 according to different functional requirements, which reduces the complexity of operation.

[0059] Of course, in other embodiments, the chopping knife assembly 3 and the stirring paddle assembly 5 are each equipped with a cup shell 4, and the height of the cup shell 4 assembled with the stirring paddle assembly 5 is higher than the height of the cup shell 4 assembled with the chopping knife assembly 3.

[0060] When a chopping operation is required, the chopping knife assembly 3 is installed in a relatively short cup shell 4. The shorter cup shell 4 is designed to be suitable for chopping operations, which can better concentrate the ingredients and enable the chopping knife to cut and crush the ingredients more effectively. When a stirring operation is required, the stirring paddle assembly 5 is installed in a relatively high cup shell 4. The higher cup shell 4 provides a larger space for the stirring operation, so that the stirring paddle can more fully stir the liquid or semi-liquid substance and avoid liquid splashing during the stirring process. It can be seen that the cup shells 4 of different heights are designed for chopping and stirring functions respectively, which better meet the needs of their respective operations. When chopping, the shorter cup shell 4 helps to concentrate the ingredients and improve the chopping efficiency; when stirring, the higher cup shell 4 provides a larger stirring space to ensure the stirring effect. In addition, the cup shells 4 of different heights can be stacked or stored as needed, which optimizes space utilization. When not in use, they take up less storage space and are convenient for storage.

[0061] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A shredder, characterized in that: It comprises a main unit (1), a cup cover (2), a chopping blade assembly (3), a cup shell (4) and a stirring paddle assembly (5); The cup cover (2) is assembled on the cup shell (4), the main unit (1) is assembled on the cup cover (2) and a motor is provided in the main unit (1), and the chopping blade assembly (3) or the stirring paddle assembly (5) is arranged in the cup shell (4); The main machine (1) is provided with a gearbox assembly (6) that is driven by the motor. The gearbox assembly (6) includes a first-stage output external connector (613) and a second-stage output internal connector (615) that rotate synchronously. The first-stage output external connector (613) and the second-stage output internal connector (615) are arranged on the same axis. The first-level output external connector (613) is engaged with the blade connector (31) in the chopping blade assembly (3) and is used for transmission, and the second-level output internal connector (615) is engaged with the paddle connector (51) in the stirring paddle assembly (5) and is used for transmission.

2. A shredder according to claim 1, characterized in that: The primary output external connector (613) is arranged above the secondary output internal connector (615).

3. A shredder according to claim 1, characterized in that: The primary output external connector (613) is columnar and has an outwardly convex structure, and is matched with the inwardly concave knife connector (31) in the chopping knife assembly (3) for transmission.

4. A shredder according to claim 1, characterized in that: The secondary output internal connector (615) is in the shape of a circumferential ring and has an inner concave structure, and is matched with the outer convex paddle connector (51) in the stirring paddle assembly (5) for transmission.

5. A shredder according to claim 1, characterized in that: The primary output external connector (613) is columnar and has an external convex structure, the secondary output internal connector (615) is circumferentially annular and has an internal concave structure, and the primary output external connector (613) is arranged inside the secondary output internal connector (615).

6. A shredder according to any one of claims 1 to 5, characterized in that: The gearbox assembly (6) includes a primary center gear (61), a motor bracket (62), a primary planetary gear (63), a primary planetary bracket (64), an outer planetary gear housing (65), a secondary center gear (66), a secondary planetary gear (67) and a secondary lower planetary bracket (68); The primary center gear (61) is meshed with the primary planet gear (63), the primary planet gear (63) is fixed to the motor bracket (62) via the primary planet bracket (64), the primary planet gear (63) is meshed with the outer planet gear housing (65), the outer planet gear housing (65) is coaxially fixed with the secondary center gear (66), and the primary output external connector (613) is coaxially fixed to the bottom of the secondary center gear (66); The secondary center gear (66) is meshed with the secondary planet gear (67), the secondary planet gear (67) is coaxially fixed to the secondary lower planet support (68), and the secondary output inner connector (615) is coaxially fixed to the bottom of the secondary lower planet support (68).

7. A shredder according to claim 6, characterized in that: The gearbox assembly (6) comprises a secondary upper planetary support (610), and the secondary planetary gears (67) are fixed between a secondary lower planetary support (68) and the secondary upper planetary support (610).

8. A shredder according to claim 1 or 2, characterized in that: The primary output external connector (613) is in the shape of a circumferential ring and has an inner concave structure, and is matched with the outer convex knife connector (31) in the chopping knife assembly (3) for transmission.

9. A shredder according to claim 1 or 2, characterized in that: The secondary output internal connector (615) is columnar and has an outwardly convex structure, and is matched with the inwardly concave paddle connector (51) in the stirring paddle assembly (5) for transmission.

10. A shredder according to any one of claims 1-5 and 7, characterized in that: The chopping blade assembly (3) and the stirring paddle assembly (5) share a cup housing (4); Alternatively, the chopping knife assembly (3) and the stirring paddle assembly (5) are each equipped with a cup shell (4), and the height of the cup shell (4) equipped with the stirring paddle assembly (5) is higher than the height of the cup shell (4) equipped with the chopping knife assembly (3).

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