Meat grinder

Abstract

The invention particularly relates to the technical field of household appliances, in particular to a meat mincer which comprises a cutter assembly and a meat mincer body. The axis of the bearing coincides with the rotation axis of the cutter assembly. A fixed shaft is arranged on the inner bottom surface of the meat mincing cup; the fixing shaft is suitable for being inserted into an inner ring of the bearing to be fixed; under the action of external force, when the cutter assembly rotates, the inner ring of the bearing and the outer ring of the bearing rotate relatively, so that rolling friction is formed between the cutter assembly and the fixed shaft. According to the meat grinder, the bearing is arranged, so that the inner ring and the outer ring of the bearing relatively rotate to form rolling friction when the cutter rotates, traditional sliding friction is replaced by the rolling friction, friction resistance can be greatly reduced, and the service life of the meat grinder can be prolonged. Moreover, the load of the motor can be reduced, the efficiency of the motor is improved, and the service life is prolonged. Meanwhile, noise generated by rolling friction is obviously lower than that generated by sliding friction.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a meat grinder. Background Art

[0002] Household electric meat grinders currently hold a prominent place in modern kitchen appliances due to their ease of operation and practical functionality. Traditional household meat grinders on the market typically utilize a fixed shaft mounted at the bottom of a cup, with the bottom of the cutter assembly fitted over this shaft. The upper portion of the cutter assembly is connected to the output shaft of a drive motor. To grind the meat, the drive motor activates, driving the cutter assembly to rotate at high speed, thus chopping and blending the ingredients.

[0003] However, in the above-mentioned traditional structure, the cooperation between the fixed shaft and the cutter assembly belongs to surface contact sliding friction. When the cutter assembly rotates, the sliding friction between the two will generate large resistance, seriously affecting the service life of the meat grinder. Summary of the Invention

[0004] In view of this, the present application provides a meat grinder to solve the technical problem in the prior art that the cooperation between the fixed shaft and the cutter assembly of the meat grinder is a surface contact sliding friction with large resistance.

[0005] In a first aspect, the present application provides a meat grinder, comprising:

[0006] The tool assembly has a bearing at the bottom; the axis of the bearing coincides with the rotation axis of the tool assembly;

[0007] The minced meat cup has a fixed shaft on its inner bottom surface; the fixed shaft is suitable for being inserted into the inner ring of the bearing for fixation;

[0008] When the tool assembly rotates under the action of an external force, the inner ring of the bearing and the outer ring of the bearing rotate relative to each other, so that rolling friction is generated between the tool assembly and the fixed shaft.

[0009] Beneficial effects: This embodiment is provided with a bearing, so that when the cutter rotates, the inner and outer rings of the bearing rotate relative to each other to form rolling friction. By replacing traditional sliding friction with rolling friction, the frictional resistance can be greatly reduced, thereby extending the service life of the meat grinder. In addition, when driven by a motor, the load on the motor can also be reduced, thereby improving the efficiency and service life of the motor. At the same time, the noise generated by rolling friction is significantly lower than that of sliding friction, thereby improving the user experience. Furthermore, the bearing axis coincides with the rotation axis, which can ensure that the cutter assembly rotates smoothly and avoids eccentric shaking.

[0010] In an optional embodiment, a mounting hole is provided at the bottom of the tool assembly, and an interference fit is formed between the mounting hole and the outer ring of the bearing.

[0011] Beneficial Effects: This embodiment creates an interference fit between the cutter assembly and the outer ring of the bearing, ensuring no relative displacement between the bearing outer ring and the cutter assembly, thus preventing it from falling off during rotation. Furthermore, the interference fit creates a tight connection between the cutter assembly and the outer ring of the bearing, ensuring coaxiality between the bearing and the cutter assembly and effectively maintaining rolling friction stability. Furthermore, the interference fit eliminates clearance, preventing food debris from entering the connection between the bearing and the cutter assembly, thus meeting food-grade requirements.

[0012] In an optional embodiment, the mounting hole is a stepped hole structure, and the aperture of the mounting hole gradually decreases in a direction away from the fixed axis.

[0013] Beneficial Effects: This embodiment employs a stepped mounting hole structure. The stepped surface of the stepped hole provides axial positioning for the bearing outer ring, ensuring that the bearing is fixed in place after press-fitting and preventing axial movement. Furthermore, the tapering hole design facilitates positioning of the bearing outer ring during interference fit, reducing assembly difficulty and improving production efficiency. Furthermore, the stepped hole structure increases the wall thickness at the bottom of the tool assembly, enhancing local structural strength and preventing deformation after long-term use.

[0014] In an optional embodiment, there is a clearance fit between the fixed shaft and the inner ring of the bearing.

[0015] Beneficial Effects: This embodiment utilizes a clearance fit between the fixed shaft and the inner ring of the bearing. This not only minimizes rolling friction but also facilitates assembly and disassembly of the fixed shaft and bearing, providing user convenience. Furthermore, the clearance fit suppresses radial oscillation of the tool assembly, ensuring both flexibility and stability in rotation. Furthermore, the friction generated by the clearance fit is significantly greater than rolling friction, thus preventing surface contact between the inner ring and the fixed shaft during normal use, further reducing energy loss.

[0016] In an optional embodiment, an anti-rotation component is provided between the fixed shaft and the inner ring of the bearing.

[0017] Beneficial Effects: This embodiment incorporates an anti-rotation assembly between the fixed shaft and the inner ring of the bearing, preventing circumferential relative rotation between the bearing inner ring and the fixed shaft, ensuring that rolling friction is generated solely through the relative rotation of the inner and outer rings of the bearing. This also prevents uneven force on the balls caused by circumferential movement of the inner ring, extending the bearing's service life. Furthermore, the tool assembly's rotational power is fully transmitted through the inner and outer rings of the bearing, minimizing energy loss and improving operational efficiency.

[0018] In an optional embodiment, the anti-rotation component includes:

[0019] an anti-rotation hole, which is provided on the bottom end surface of the inner ring of the bearing or on the circumference of the bottom edge of the fixed shaft;

[0020] an anti-rotation protrusion, arranged on the circumference of the bottom edge of the fixed shaft, or on the bottom end surface of the inner ring of the bearing;

[0021] The anti-rotation protrusion is arranged corresponding to the anti-rotation hole, and after the fixed shaft is inserted into the inner ring of the bearing, the anti-rotation protrusion is inserted into the anti-rotation hole.

[0022] Beneficial Effects: This embodiment employs an anti-rotation assembly comprising an anti-rotation hole and an anti-rotation protrusion. The anti-rotation protrusion and the anti-rotation hole cooperate to form a rigid stop structure, effectively limiting circumferential displacement between the inner ring and the fixed shaft. Furthermore, the structure is simple and easy to manufacture, and the plug-in fit facilitates quick installation, removal, and maintenance of the tool assembly and fixed shaft.

[0023] In an optional embodiment, the meat grinder further comprises:

[0024] A driving motor, wherein the output shaft is connected to the tool assembly;

[0025] When the tool assembly rotates under the driving action of the driving motor, the inner ring of the bearing and the outer ring of the bearing rotate relative to each other, so that rolling friction is generated between the tool assembly and the fixed shaft.

[0026] Beneficial Effects: This embodiment uses a drive motor to directly drive the tool assembly. Due to the use of rolling friction between the inner and outer rings of the bearing, it can reduce some power losses, thereby increasing motor efficiency to over 90%. Furthermore, compared to manual operation, this drive motor ensures stable tool speed, and combined with the low resistance characteristics of rolling friction, effectively improves mincing efficiency and uniformity. Furthermore, by utilizing rolling friction to reduce the motor load, the operating temperature of the drive motor can be significantly reduced, thereby reducing the risk of failure due to overheating.

[0027] In an optional embodiment, the output shaft of the drive motor is detachably connected to the tool assembly.

[0028] Beneficial Effects: This embodiment detachably connects the drive motor output shaft to the cutter assembly. This detachable design facilitates individual removal and cleaning of the cutter assembly, meeting the hygienic requirements of household kitchen appliances. Furthermore, if a component is damaged, the cutter assembly or drive motor can be replaced independently without disassembling the entire unit, improving after-sales repair efficiency. Furthermore, the system supports interchangeable cutter assemblies of different models to accommodate diverse functions such as mincing and blending.

[0029] In an optional embodiment, the meat grinder further comprises:

[0030] A power supply component supplies power to the driving motor; the power supply component is one of a battery, a dry cell, and an alternating current.

[0031] Beneficial Effects: This embodiment provides multiple power supply options, supporting both portable use (e.g., batteries and dry cells) and home use (e.g., AC power), thus enabling diverse usage scenarios and enhancing product applicability. Furthermore, the battery mode supports outdoor use, while the AC mode is suitable for long-term continuous operation. This allows for diverse power supply options to meet diverse user needs and enhance product market competitiveness.

[0032] In an optional embodiment, the bearing is one of a deep groove ball bearing, a tapered roller bearing, a cylindrical roller bearing, an angular contact ball bearing or a self-aligning ball bearing.

[0033] Beneficial Effects: This embodiment provides multiple bearing types, each suitable for different load requirements. For example, deep groove ball bearings are suitable for light loads, while tapered roller bearings are suitable for heavy loads. Furthermore, the bearing type can be selected based on the application scenario, further enhancing the friction reduction effect. For example, self-aligning ball bearings can compensate for installation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 It is a structural diagram of a meat grinder in the prior art;

[0036] Figure 2 for Figure 1 The meat grinder shown is a partially enlarged schematic diagram of part A;

[0037] Figure 3 for Figure 1 The structural diagram of the conventional tool assembly shown;

[0038] Figure 4 This is a schematic diagram of the cooperation between the knife assembly and the meat grinder cup in this application;

[0039] Figure 5 for Figure 4 A partial enlarged schematic diagram shown in part B;

[0040] Figure 6 This is a cross-sectional view of the tool assembly and the bearing after assembly in this application;

[0041] Figure 7 This is an exploded diagram of the tool assembly and bearing in this application.

[0042] Description of reference numerals:

[0043] 10. Tool assembly; 11. Mounting hole;

[0044] 20. Bearing; 21. Inner ring; 22. Outer ring; 23. Ball;

[0045] 30. Meat grinder; 40. Fixed shaft; 50. Drive motor. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0047] In the description of this application, it should be noted that the terms "inner," "upper," "outer," "lower," and "under" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal connection between two components; wireless connection or wired connection. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0049] At present, household electric meat grinders occupy an important position in modern household kitchen appliances due to their convenient operation and practical functions. Figures 1 to 3As shown, the traditional household meat grinder structure currently on the market usually adopts a structure in which a fixed shaft 40 is installed at the bottom of the cup body, and then the bottom of the tool assembly 10 is sleeved on the fixed shaft 40, and the upper part of the tool assembly 10 is connected to the motor output shaft of the drive motor 50. When the meat needs to be minced, the drive motor 50 starts working and drives the tool assembly 10 to rotate at high speed, thereby completing the chopping, stirring and other processing of the ingredients. However, in the above-mentioned traditional structure, the cooperation between the fixed shaft 40 and the tool assembly 10 is a surface contact sliding friction. When the tool assembly 10 rotates, the sliding friction between the two will generate a large resistance, which seriously affects the service life of the meat grinder.

[0050] In view of this, the present application provides a meat grinder to solve the technical problem in the prior art that the cooperation between the fixed shaft 40 and the cutter assembly 10 of the meat grinder is a surface contact sliding friction with large resistance.

[0051] The following combination Figures 4 to 7 , describing the embodiments of the present application.

[0052] like Figures 4 to 7 As shown, according to an embodiment of the present application, on one hand, the present application provides a meat grinder, which includes a knife assembly 10 and a meat grinder cup 30.

[0053] Specifically, in this embodiment, a bearing 20 is provided at the bottom of the tool assembly 10, and the axis of the bearing 20 coincides with the rotation axis of the tool assembly 10, that is, the tool assembly 10 and the bearing 20 have the same rotation direction, so that the tool assembly 10 rotates smoothly and avoids eccentricity.

[0054] In actual use, the cutter assembly 10 can be driven manually by the user. For example, a handle can be provided on the cutter assembly 10, and the user can drive the cutter assembly 10 to rotate by holding the handle. For example, the handle can also be changed to a hand crank.

[0055] Of course, this embodiment is only an example of the manual gripping structure of the user, but it is not limited to this. Those skilled in the art can make changes according to actual conditions as long as the same technical effect can be achieved.

[0056] Furthermore, in this embodiment, a fixed shaft 40 is provided on the bottom surface of the inner portion of the meat grinder cup 30, and the fixed shaft 40 is adapted to be inserted into and fixed in the inner ring 21 of the bearing 20. The fixing method of the fixed shaft 40 and the meat grinder cup 30 can be a fixed connection or a detachable connection.

[0057] For fixed connection, welding, bonding, etc. can be used. For detachable connection, screws and screw holes can be used for fixation, buckles and slots can be used for fixation, and magnetic attraction can be used for fixation.

[0058] The following examples illustrate the detachable connection method. For example, additional fixing plates can be provided on both sides of the fixed shaft 40. Those skilled in the art can change the number of fixing plates according to actual conditions, such as 1, 2, 3, 4, etc., and then a screw hole can be opened on the fixing plate. Then, another screw hole can be opened on the minced meat cup 30 at the position corresponding to the screw hole. Then, the screw can be passed through the screw hole on the fixing plate and the screw hole on the minced meat cup 30 in sequence, thereby connecting the fixed shaft 40 to the minced meat cup 30. Furthermore, when fixing with a buckle and a slot, additional buckles can be provided on the fixed shaft 40. Those skilled in the art can change the number of buckles according to actual conditions, such as 1, 2, 3, 4, etc., and then a slot that can cooperate with the buckle can be opened on the minced meat cup 30 at the position corresponding to the buckle. Then, the buckle on the fixed shaft 40 can be directly embedded in the slot on the minced meat cup 30, thereby connecting the fixed shaft 40 to the minced meat cup 30. When fixing by magnetic attraction, an additional magnetic sheet can be set on the fixed shaft 40. Those skilled in the art can change the number of magnetic sheets according to actual conditions, 1, 2, 3, 4, etc., and then provide a magnetic sheet of opposite sex that can be attracted to the magnetic sheet at the position corresponding to the magnetic sheet on the minced meat cup 30. Then, the magnetic sheet on the fixed shaft 40 is directly aligned with the magnetic sheet of opposite sex embedded in the minced meat cup 30, so that the fixed shaft 40 and the minced meat cup 30 are magnetically connected.

[0059] Of course, this embodiment is only an example of a fixed connection method and a detachable connection method, but it does not limit this. Those skilled in the art can make changes according to actual conditions as long as the same technical effect can be achieved.

[0060] During actual use, under the action of external force, when the tool assembly 10 rotates, the inner ring 21 of the bearing 20 and the outer ring 22 of the bearing 20 rotate relative to each other. Since there are balls 23 between the inner ring 21 of the bearing 20 and the outer ring 22 of the bearing 20, rolling friction is generated between the tool assembly 10 and the fixed shaft 40.

[0061] In this way, the present embodiment is provided with a bearing 20, so that when the cutter rotates, the inner ring 21 and the outer ring 22 of the bearing 20 rotate relative to each other to form rolling friction. By replacing the traditional sliding friction with rolling friction, the friction resistance can be greatly reduced, thereby extending the service life of the meat grinder. In addition, when driven by a motor, the load on the motor can also be reduced, thereby improving the efficiency and service life of the motor. At the same time, the noise generated by rolling friction is significantly lower than that of sliding friction, thereby improving the user experience. Furthermore, the axis of the bearing 20 coincides with the axis of rotation, which can ensure that the cutter assembly 10 rotates smoothly and avoids eccentric shaking.

[0062] Furthermore, in an optional embodiment, a mounting hole 11 is provided at the bottom of the tool assembly 10 , and an interference fit is formed between the mounting hole 11 and the outer ring 22 of the bearing 20 .

[0063] Preferably, the interference between the inner diameter of the mounting hole 11 and the outer diameter of the outer ring 22 of the bearing 20 is controlled within a range of 0.02 mm to 0.05 mm to ensure the secure installation of the bearing 20 .

[0064] As an alternative, in some applications where installation precision is less critical, the fit between the outer ring 22 of the bearing 20 and the mounting hole 11 can be changed to a clearance fit. Positioning elements such as snap rings or retaining rings can be used to stabilize the outer ring 22 of the bearing 20, facilitating disassembly and maintenance. For installations requiring a large interference fit, a shrink-fit process can be employed. The outer ring 22 of the bearing 20 is heated and expanded before being installed into the mounting hole 11. After cooling, an interference fit is achieved, improving installation precision and reliability.

[0065] This arrangement creates an interference fit between the cutter assembly 10 and the outer ring 22 of the bearing 20, ensuring no relative displacement between the outer ring 22 of the bearing 20 and the cutter assembly 10, thus preventing them from falling off during rotation. Furthermore, the interference fit creates a tight connection between the cutter assembly 10 and the outer ring 22 of the bearing 20, ensuring coaxiality between the two and effectively maintaining rolling friction stability. Furthermore, the interference fit eliminates clearance, preventing food debris from entering the connection between the bearing 20 and the cutter assembly 10, thus meeting food-grade requirements.

[0066] Furthermore, in an optional embodiment, the mounting hole 11 has a stepped hole structure, and the diameter of the mounting hole 11 gradually decreases in a direction away from the fixed shaft 40. In this embodiment, the depth of the stepped hole satisfies the requirement that the inner ring 21 of the bearing 20 can rotate freely after the outer ring 22 of the bearing 20 is interference-fitted.

[0067] Furthermore, in this embodiment, the fixed shaft 40 can be designed as a stepped shaft, with different diameters at different locations to accommodate bearings 20 and tool assemblies 10 of different sizes, thereby increasing structural flexibility. Of course, to reduce weight or achieve other functions, the fixed shaft 40 can be designed as a hollow structure while ensuring sufficient strength and rigidity.

[0068] In this embodiment, mounting hole 11 is configured as a stepped hole structure. The stepped surface of the stepped hole provides axial positioning for the outer ring 22 of bearing 20, ensuring that the bearing 20 is fixed in position after being pressed in and preventing axial movement. Furthermore, the gradually decreasing hole diameter design facilitates positioning of the outer ring 22 of bearing 20 during interference fit, reducing assembly difficulty and improving production efficiency. Furthermore, the stepped hole structure increases the wall thickness of the bottom of tool assembly 10, improving local structural strength and preventing deformation after long-term use.

[0069] Furthermore, in an optional embodiment, a clearance fit is provided between the fixed shaft 40 and the inner ring 21 of the bearing 20. Specifically, the clearance between the inner diameter of the inner ring 21 of the bearing 20 and the outer diameter of the fixed shaft 40 is controlled within a range of 0.01 mm to 0.03 mm. This ensures that the tool assembly 10 can rotate flexibly about the fixed shaft 40 while preventing shaking of the tool assembly 10 due to an excessive clearance.

[0070] This arrangement creates a clearance fit between the fixed shaft 40 and the inner ring 21 of the bearing 20. This arrangement, while ensuring rolling friction, also facilitates assembly and disassembly of the fixed shaft 40 and the bearing 20, providing user convenience. Furthermore, the clearance fit suppresses radial motion of the tool assembly 10, ensuring both flexibility and stability in its rotation. Furthermore, the friction generated by the clearance fit is significantly greater than rolling friction, thus preventing surface contact between the inner ring 21 and the fixed shaft 40 during normal use, further reducing energy loss.

[0071] Furthermore, in an optional embodiment, an anti-rotation component is provided between the fixed shaft 40 and the inner ring 21 of the bearing 20 .

[0072] The anti-rotation component can be a newly added fixed ring or a sealant applied between the fixed shaft 40 and the inner ring 21 of the bearing 20. Of course, this embodiment is merely an example of the type of anti-rotation component and is not intended to be limiting. Those skilled in the art may modify the anti-rotation component based on actual conditions, as long as the same technical effect is achieved.

[0073] In this configuration, an anti-rotation assembly is provided between the fixed shaft 40 and the inner ring 21 of the bearing 20 in this embodiment. This prevents circumferential relative rotation between the inner ring 21 of the bearing 20 and the fixed shaft 40, ensuring that rolling friction is achieved solely through the relative rotation of the inner and outer rings 22 of the bearing 20. This also prevents uneven force on the balls 23 caused by circumferential movement of the inner ring 21, thereby extending the service life of the bearing 20. Furthermore, the rotational power of the tool assembly 10 is fully transmitted through the inner and outer rings 22 of the bearing 20, avoiding energy loss and thus improving work efficiency.

[0074] Furthermore, in an optional embodiment, the anti-rotation component includes an anti-rotation hole and an anti-rotation protrusion.

[0075] Specifically, in this embodiment, the anti-rotation hole is provided on the bottom end surface of the inner ring 21 of the bearing 20, or on the circumference of the bottom edge of the fixed shaft 40. The anti-rotation protrusion is provided on the circumference of the bottom edge of the fixed shaft 40, or on the bottom end surface of the inner ring 21 of the bearing 20.

[0076] That is, the anti-rotation protrusion is provided corresponding to the anti-rotation hole, and after the fixed shaft 40 is inserted into the inner ring 21 of the bearing 20 , the anti-rotation protrusion is inserted into the anti-rotation hole.

[0077] The number of anti-rotation holes and anti-rotation protrusions can be one, two, three, four, five, etc. Of course, this embodiment is merely an example of the number of anti-rotation holes and anti-rotation protrusions, but is not intended to be limiting. Those skilled in the art can make changes based on actual conditions as long as the same technical effect can be achieved.

[0078] In this embodiment, the anti-rotation assembly is configured as an anti-rotation hole and an anti-rotation protrusion. The anti-rotation protrusion and the anti-rotation hole cooperate to form a rigid stop structure, effectively limiting the circumferential displacement of the inner ring 21 and the fixed shaft 40. Furthermore, the two structures are simple and easy to manufacture, and the plug-in fit further facilitates quick installation and removal of the tool assembly 10 and the fixed shaft 40 for maintenance.

[0079] Furthermore, in an optional embodiment, the meat grinder further includes a drive motor 50, the output shaft of which is connected to the cutter assembly 10. When the cutter assembly 10 rotates under the driving action of the drive motor 50, the inner ring 21 of the bearing 20 and the outer ring 22 of the bearing 20 rotate relative to each other, thereby generating rolling friction between the cutter assembly 10 and the fixed shaft 40.

[0080] With this arrangement, this embodiment uses a drive motor 50 to directly drive the tool assembly 10. Due to the use of rolling friction between the inner and outer rings 22 of the bearing 20, it is possible to reduce some power losses, thereby increasing motor efficiency to over 90%. Furthermore, compared to manual operation, the drive motor 50 ensures a stable tool speed, and combined with the low resistance characteristics of rolling friction, effectively improves the efficiency and uniformity of mincing. Furthermore, by utilizing rolling friction to reduce the motor load, the operating temperature of the drive motor 50 can be significantly reduced, thereby reducing the risk of failure due to overheating.

[0081] Furthermore, in an optional embodiment, the output shaft of the drive motor 50 is detachably connected to the cutter assembly 10. With this arrangement, this embodiment detachably connects the output shaft of the drive motor 50 to the cutter assembly 10. The detachable design facilitates the removal and cleaning of the cutter assembly 10, meeting the hygiene requirements of household kitchen appliances. Furthermore, if a component is damaged, the cutter assembly 10 or the drive motor 50 can be replaced individually without disassembling the entire unit, thereby improving after-sales maintenance efficiency. Furthermore, the system can support the replacement of different models of cutter assemblies 10 to meet various functional requirements such as mincing and stirring.

[0082] Furthermore, in an optional embodiment, the meat grinder also includes a power supply component, which supplies power to the driving motor 50, and the power supply component is one of a battery, a dry cell, and alternating current.

[0083] This embodiment allows the power supply to be configured in multiple forms, supporting both portable use (e.g., batteries and dry cells) and home use (e.g., AC power), thus enabling diverse usage scenarios and enhancing product applicability. Furthermore, the battery mode supports outdoor use, while the AC mode is suitable for long-term continuous operation. This allows for diverse power supply methods to meet diverse user needs and enhance product market competitiveness.

[0084] Furthermore, in an optional embodiment, the bearing 20 is one of a deep groove ball bearing 20, a tapered roller bearing 20, a cylindrical roller bearing 20, an angular contact ball bearing 20 or a self-aligning ball bearing 20.

[0085] This configuration allows this embodiment to offer a variety of bearing types. Different bearing types can accommodate varying load requirements, such as deep groove ball bearings (20) for light loads and tapered roller bearings (20) for heavy loads. Furthermore, the bearing type can be selected based on the application scenario to further enhance friction reduction. For example, self-aligning ball bearings (20) can compensate for installation errors.

[0086] Furthermore, in an optional embodiment, in a small household meat grinder with low strength requirements, the cutter assembly 10 can be made of high-performance engineering plastics, such as polyetheretherketone (PEEK) or polyoxymethylene (POM), to reduce costs while meeting usage requirements. Alternatively, a metal-plastic composite can be used, such as using a metal blade and a plastic body, to achieve both cutting performance and lightweight requirements.

[0087] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A meat grinder, characterized in that: include: The tool assembly (10) is provided with a bearing (20) at the bottom; the axis of the bearing (20) coincides with the rotation axis of the tool assembly (10); The minced meat cup (30) has a fixed shaft (40) disposed on its inner bottom surface; the fixed shaft (40) is adapted to be inserted into the inner ring (21) of the bearing (20) for fixation; When the tool assembly (10) rotates under the action of an external force, the inner ring (21) of the bearing (20) and the outer ring (22) of the bearing (20) rotate relative to each other, thereby generating rolling friction between the tool assembly (10) and the fixed shaft (40).

2. The meat grinder according to claim 1, characterized in that A mounting hole (11) is provided at the bottom of the tool assembly (10), and an interference fit is formed between the mounting hole (11) and the outer ring (22) of the bearing (20).

3. The meat grinder according to claim 2, characterized in that The mounting hole (11) is a stepped hole structure, and the diameter of the mounting hole (11) gradually decreases in a direction away from the fixed shaft (40).

4. The meat grinder according to any one of claims 1 to 3, characterized in that There is a clearance fit between the fixed shaft (40) and the inner ring (21) of the bearing (20).

5. The meat grinder according to claim 4, characterized in that An anti-rotation component is provided between the fixed shaft (40) and the inner ring (21) of the bearing (20).

6. The meat grinder according to claim 5, characterized in that The anti-rotation component comprises: an anti-rotation hole, which is provided on the bottom end surface of the inner ring (21) of the bearing (20) or on the circumference of the bottom edge of the fixed shaft (40); an anti-rotation protrusion, arranged on the circumference of the bottom edge of the fixed shaft (40), or on the bottom end surface of the inner ring (21) of the bearing (20); The anti-rotation protrusion is arranged corresponding to the anti-rotation hole, and after the fixed shaft (40) is inserted into the inner ring (21) of the bearing (20), the anti-rotation protrusion is inserted into the anti-rotation hole.

7. The meat grinder according to any one of claims 1 to 3, characterized in that The meat grinder also includes: A driving motor (50) having an output shaft connected to the tool assembly (10); When the tool assembly (10) rotates under the driving action of the drive motor (50), the inner ring (21) of the bearing (20) and the outer ring (22) of the bearing (20) rotate relative to each other, so that rolling friction is generated between the tool assembly (10) and the fixed shaft (40).

8. The meat grinder according to claim 7, characterized in that The output shaft of the driving motor (50) is detachably connected to the tool assembly (10).

9. The meat grinder according to claim 7, characterized in that The meat grinder also includes: A power supply component is used to supply power to the driving motor (50); the power supply component is one of a storage battery, a dry cell, and an alternating current.

10. The meat grinder according to any one of claims 1 to 3, characterized in that The bearing (20) is one of a deep groove ball bearing (20), a tapered roller bearing (20), a cylindrical roller bearing (20), an angular contact ball bearing (20) or a self-aligning ball bearing (20).

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