meat grinder

Abstract

This application specifically relates to the field of household appliance technology, and more specifically to a meat grinder. The meat grinder includes: a blade assembly with a bearing at its bottom; the axis of the bearing coincides with the rotation axis of the blade assembly; a grinding cup with a fixed shaft on its inner bottom surface; the fixed shaft is adapted to be inserted into the inner ring of the bearing for fixation; under external force, when the blade assembly rotates, the inner and outer rings of the bearing rotate relative to each other, resulting in rolling friction between the blade assembly and the fixed shaft. This embodiment incorporates a bearing, allowing the inner and outer rings of the bearing to rotate relative to each other and generate rolling friction when the blades rotate. By replacing traditional sliding friction with rolling friction, frictional resistance can be significantly reduced, thereby extending the service life of the meat grinder. Furthermore, it can reduce the load on the motor, improving motor efficiency and service life. Simultaneously, the noise generated by rolling friction is significantly lower than that generated by sliding friction.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, specifically to a meat grinder. Background Technology

[0002] Currently, household electric meat grinders occupy an important position in modern family kitchen appliances due to their convenient operation and practical functions. The traditional structure of household meat grinders on the market typically involves mounting a fixed shaft at the bottom of the bowl, with the blade assembly fitted onto this fixed shaft. The upper part of the blade assembly is connected to the output shaft of the drive motor. When meat needs to be ground, the drive motor starts working, causing the blade assembly to rotate at high speed, thereby completing the chopping and mixing of ingredients.

[0003] However, in the aforementioned traditional structure, the contact between the fixed shaft and the cutter assembly is a surface contact sliding friction. When the cutter assembly rotates, the sliding friction between the two generates significant resistance, severely affecting the service life of the meat grinder. Utility Model Content

[0004] In view of this, this application provides a meat grinder to solve the technical problem that the cooperation between the fixed shaft and the blade assembly of the existing meat grinder is a sliding friction of surface contact, which has a large resistance.

[0005] In a first aspect, this application provides a meat grinder, which includes:

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

[0007] The meat grinder cup has a fixed shaft on its inner bottom surface; the fixed shaft is adapted to be inserted into the inner ring of the bearing for fixation.

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

[0009] Beneficial effects: This embodiment incorporates bearings, causing the inner and outer rings of the bearings to rotate relative to each other during cutter rotation, creating rolling friction. Replacing traditional sliding friction with rolling friction significantly reduces frictional resistance, thereby extending the meat grinder's lifespan. Furthermore, when using a motor drive, it reduces the motor load, improving motor efficiency and lifespan. Simultaneously, the noise generated by rolling friction is significantly lower than that of sliding friction, thus enhancing the user experience. Moreover, the bearing axis coincides with the rotation axis, ensuring smooth rotation of the cutter assembly and preventing eccentric wobbling.

[0010] In one alternative embodiment, the bottom of the tool assembly has a mounting hole, and the mounting hole and the outer ring of the bearing are interference fit.

[0011] Beneficial effects: In this embodiment, the interference fit between the blade assembly and the outer ring of the bearing ensures no relative displacement between them, preventing them from falling off during rotation. Simultaneously, the interference fit creates a tight connection between the blade assembly and the outer ring of the bearing, guaranteeing their coaxiality and effectively maintaining rolling friction stability. Furthermore, the interference fit eliminates clearance, preventing food debris from entering the connection between the bearing and the blade assembly, meeting food-grade requirements.

[0012] In one alternative embodiment, the mounting hole is a stepped hole structure, and the diameter of the mounting hole gradually decreases along the direction away from the fixed axis.

[0013] Beneficial effects: In this embodiment, the mounting hole is designed as a stepped hole structure. The stepped surface of the hole provides axial restraint for the bearing outer ring, ensuring that the bearing is fixed in position after pressing in and preventing axial movement. Furthermore, the gradually decreasing hole diameter facilitates positioning of the bearing outer ring during interference fit, reducing assembly difficulty and improving production efficiency. Simultaneously, 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 one alternative embodiment, the fixed shaft and the inner ring of the bearing are in a clearance fit.

[0015] Beneficial effects: This embodiment uses a clearance fit between the fixed shaft and the inner ring of the bearing. While accommodating rolling friction, it also facilitates the assembly and disassembly of the fixed shaft and bearing, making it convenient for users. Simultaneously, the clearance fit suppresses radial wobble of the tool assembly, thus balancing the flexibility and stability of the tool assembly's rotation. Furthermore, the frictional force generated by the clearance fit is much greater than that of rolling friction, therefore avoiding surface contact friction between the inner ring and the fixed shaft during normal use, further reducing energy loss.

[0016] In one alternative 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 component between the fixed shaft and the inner ring of the bearing. This prevents circumferential rotation between the inner ring of the bearing and the fixed shaft, ensuring that rolling friction is achieved solely through the relative rotation of the inner and outer rings of the bearing. Simultaneously, it avoids uneven ball bearing stress caused by circumferential movement of the inner ring, extending bearing life. Furthermore, it ensures that the rotational power of the tool assembly is entirely transmitted through the inner and outer rings of the bearing, preventing energy loss and thus improving work efficiency.

[0018] In one optional implementation, the anti-rotation component includes:

[0019] Anti-rotation holes are formed on the bottom end face of the inner ring of the bearing, or on the bottom edge of the fixed shaft in the circumferential direction.

[0020] Anti-rotation protrusions are provided on the bottom edge circumferentially of the fixed shaft, or on the bottom end face of the inner ring of the bearing;

[0021] The anti-rotation protrusion is provided 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: In this embodiment, the anti-rotation component is configured with an anti-rotation hole and an anti-rotation protrusion. The cooperation between the anti-rotation protrusion and the anti-rotation hole forms a rigid stop structure, effectively limiting the circumferential displacement of the inner ring and the fixed shaft. At the same time, the structure is simple and easy to manufacture, and the insert-type cooperation facilitates the quick installation, disassembly, and maintenance of the tool assembly and the fixed shaft.

[0023] In one alternative embodiment, the meat grinder further includes:

[0024] The drive motor has its output shaft connected to the tool assembly;

[0025] When the tool assembly rotates under the drive of the drive motor, the inner ring and the outer ring of the bearing rotate relative to each other, resulting in rolling friction between the tool assembly and the fixed shaft.

[0026] Beneficial Effects: This embodiment uses a drive motor to directly drive the cutter assembly. Due to the use of rolling friction between the inner and outer rings of the bearings, power loss is reduced, thereby increasing motor efficiency to over 90%. Simultaneously, compared to manual operation, the drive motor ensures stable cutter speed, and combined with the low-resistance characteristics of rolling friction, effectively improves meat grinding efficiency and uniformity. Furthermore, by utilizing rolling friction to reduce the motor load, the operating temperature of the drive motor can be significantly lowered, thus reducing the risk of failure due to overheating.

[0027] In one alternative 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 blade assembly. This detachable design allows for easy removal and cleaning of the blade assembly, meeting the hygiene requirements of household kitchen appliances. Furthermore, in case of component damage, the blade assembly or drive motor can be replaced individually without overall disassembly, improving after-sales maintenance efficiency. Additionally, it supports the replacement of different models of blade assemblies to meet various functional needs such as meat grinding and mixing.

[0029] In one alternative embodiment, the meat grinder further includes:

[0030] A power supply component supplies power to the drive motor; the power supply component is one of a storage battery, a dry cell battery, or an AC power source.

[0031] Beneficial effects: This embodiment sets the power supply component in multiple forms, thereby supporting portable use, such as rechargeable batteries and dry cell batteries, as well as household use, such as AC power, thus realizing multiple usage scenarios and improving product applicability. Simultaneously, the battery mode supports outdoor use, while the AC power mode is suitable for long-term continuous operation, thus meeting the needs of different users through multiple power supply methods and enhancing the product's market competitiveness.

[0032] In one alternative 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 sets the bearings into multiple types, and different bearing types can adapt to 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 according to the usage scenario to further improve the friction resistance reduction effect. For example, self-aligning ball bearings can compensate for installation errors. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a meat grinder in the prior art;

[0036] Figure 2 for Figure 1 A magnified view of part A of the meat grinder shown;

[0037] Figure 3 for Figure 1 The diagram shows the structure of a traditional tool assembly.

[0038] Figure 4 This is a schematic diagram illustrating the interaction between the cutting tool assembly and the meat grinder cup in this application;

[0039] Figure 5 for Figure 4 The diagram shown is a partial enlarged view of part B.

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

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

[0042] Explanation of reference numerals in the attached figures:

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

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

[0045] 30. Meat grinder cup; 40. Fixed shaft; 50. Drive motor. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are 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," "underneath," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing 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, and therefore should not be construed as a limitation 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 and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to fixed communication, detachable communication, or integral communication; they can refer to mechanical communication or electrical communication; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to communication within two components; and they can refer to wireless communication or wired communication. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] Currently, household electric meat grinders occupy an important position in modern family kitchen appliances due to their ease of operation and practical functions. For example... Figures 1 to 3As shown, traditional household meat grinders on the market typically employ a structure where a fixed shaft 40 is mounted at the bottom of the bowl, and the bottom of the blade assembly 10 is fitted onto this fixed shaft 40. The upper part of the blade assembly 10 is connected to the output shaft of the drive motor 50. When meat needs to be ground, the drive motor 50 starts working, driving the blade assembly 10 to rotate at high speed, thereby completing the chopping and mixing of ingredients. However, in the above-mentioned traditional structure, the contact between the fixed shaft 40 and the blade assembly 10 is a surface contact sliding friction. When the blade assembly 10 rotates, the sliding friction between the two generates significant resistance, severely affecting the service life of the meat grinder.

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

[0051] The following is combined with Figures 4 to 7 This describes an embodiment of the present application.

[0052] like Figures 4 to 7 As shown, according to an embodiment of this application, in one aspect, this application provides a meat grinder, which includes a blade assembly 10 and a meat grinding 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 to say, the rotation direction of the tool assembly 10 and the bearing 20 is the same, so that the tool assembly 10 rotates smoothly and avoids eccentricity.

[0054] In actual use, the tool assembly 10 can be manually driven by the user. For example, a handle can be provided on the tool assembly 10, allowing the user to rotate the tool assembly 10 by holding the handle. Alternatively, the handle can be replaced with a hand crank.

[0055] Of course, this embodiment is merely an example of a manual grip structure, but it is not intended to limit the scope of the invention. Those skilled in the art can make changes according to the actual situation, as long as the same technical effect can be achieved.

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

[0057] For fixed connections, welding or bonding can be used. For detachable connections, screws and screw holes, clips and slots, or magnetic attraction can be used for fixing.

[0058] The following provides examples of detachable connection methods. For instance, 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 needs, such as 1, 2, 3, 4, etc. Screw holes are then made on the fixing plates, and another screw hole is made on the meat grinder cup 30 at the corresponding screw hole position. Screws are then passed through the screw holes on the fixing plates and the meat grinder cup 30 in sequence to connect the fixed shaft 40 and the meat grinder cup 30. Furthermore, when using a snap-fit ​​and slot method for fixing, snap-fits can be additionally provided on the fixed shaft 40. Those skilled in the art can change the number of snap-fits according to actual needs, such as 1, 2, 3, 4, etc. A slot is then made on the meat grinder cup 30 at the corresponding snap-fit ​​position to engage with the snap-fit. The snap-fit ​​on the fixed shaft 40 is then directly inserted into the slot on the meat grinder cup 30, thereby connecting the fixed shaft 40 and the meat grinder cup 30. When fixing by magnetic attraction, a magnetic sheet can be additionally set on the fixing shaft 40. Those skilled in the art can change the number of magnetic sheets according to the actual situation, such as 1, 2, 3, 4, etc. Then, a dissimilar magnetic sheet that can attract the magnetic sheet is made on the meat grinder cup 30 at the position corresponding to the magnetic sheet. Then, the magnetic sheet on the fixing shaft 40 is directly aligned with the dissimilar magnetic sheet embedded on the meat grinder cup 30, thereby magnetically connecting the fixing shaft 40 and the meat grinder cup 30.

[0059] Of course, this embodiment is merely an example of fixed connection and detachable connection, but it does not limit the scope of the invention. Those skilled in the art can make changes according to the actual situation to achieve the same technical effect.

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

[0061] With this configuration, the bearing 20 in this embodiment allows the inner ring 21 and outer ring 22 of the bearing 20 to rotate relative to each other during blade rotation, generating rolling friction. Replacing traditional sliding friction with rolling friction significantly reduces frictional resistance, thereby extending the service life of the meat grinder. Furthermore, when using a motor drive, it reduces the motor load, improving motor efficiency and lifespan. Simultaneously, the noise generated by rolling friction is significantly lower than that of sliding friction, thus improving the user experience. Moreover, the alignment of the bearing 20's axis with the rotation axis ensures smooth rotation of the blade assembly 10, preventing eccentric wobbling.

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

[0063] Preferably, the interference fit 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 the range of 0.02 mm to 0.05 mm to ensure the secure installation of the bearing 20.

[0064] As an alternative implementation, in situations where high installation precision is not required, 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 bearings 20 with a large interference fit, a heat-fitting process can be used. The outer ring 22 of the bearing 20 is heated and expanded before being inserted into the mounting hole 11. After cooling, an interference fit is achieved, improving installation precision and reliability.

[0065] With this configuration, the cutter assembly 10 and the outer ring 22 of the bearing 20 are interference-fitted, ensuring no relative displacement between them and preventing them from falling off during rotation. Simultaneously, the interference fit creates a tight connection between the cutter assembly 10 and the outer ring 22 of the bearing 20, guaranteeing their coaxiality 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, meeting food-grade requirements.

[0066] Furthermore, in an optional embodiment, the mounting hole 11 is a stepped hole structure, and the diameter of the mounting hole 11 gradually decreases along the 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 press-fitted in.

[0067] Furthermore, in this embodiment, the fixed shaft 40 can be designed as a stepped shaft, using different diameters in different parts to accommodate bearings 20 and tool assemblies 10 of different sizes, 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] With this configuration, the mounting hole 11 in this embodiment is designed as a stepped hole structure. The stepped surface of the hole provides axial restraint for the outer ring 22 of the 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 facilitates positioning of the outer ring 22 of the bearing 20 during interference fit, reducing assembly difficulty and improving production efficiency. Simultaneously, the stepped hole structure increases the wall thickness at the bottom of the tool assembly 10, enhancing local structural strength and preventing deformation after long-term use.

[0069] Furthermore, in an optional embodiment, the fixed shaft 40 and the inner ring 21 of the bearing 20 are in a clearance fit. 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 the range of 0.01mm to 0.03mm. This ensures that the tool assembly 10 can rotate flexibly around the fixed shaft 40 while avoiding the problem of tool assembly 10 shaking due to excessive clearance.

[0070] With this configuration, the fixed shaft 40 and the inner ring 21 of the bearing 20 are set to a clearance fit in this embodiment. This balances rolling friction with ease of assembly and disassembly of the fixed shaft 40 and the bearing 20, making it convenient for users. Simultaneously, the clearance fit suppresses radial wobble of the tool assembly 10, thus balancing the flexibility and stability of the tool assembly 10's rotation. Furthermore, the frictional force generated by the clearance fit is much greater than that of rolling friction, therefore, surface contact friction between the inner ring 21 and the fixed shaft 40 can be avoided 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] Regarding the type of anti-rotation component, it could be a newly added retaining 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 illustrating the types of anti-rotation components, and is not intended to limit the scope. Those skilled in the art can modify it according to actual circumstances to achieve the same technical effect.

[0073] With this configuration, an anti-rotation component 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 only through the relative rotation of the inner and outer rings 22 of the bearing 20. Simultaneously, it avoids uneven force distribution on the balls 23 caused by circumferential movement of the inner ring 21, extending the service life of the bearing 20. Furthermore, it ensures that the rotational power of the tool assembly 10 is entirely 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 formed on the bottom end face of the inner ring 21 of the bearing 20, or on the bottom edge circumferentially of the fixed shaft 40. The anti-rotation protrusion is provided on the bottom edge circumferentially of the fixed shaft 40, or on the bottom end face of the inner ring 21 of the bearing 20.

[0076] That is, the anti-rotation protrusion is provided correspondingly 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 illustrating the number of anti-rotation holes and protrusions, but it is not a limitation. Those skilled in the art can modify it according to actual circumstances to achieve the same technical effect.

[0078] With this configuration, the anti-rotation component in this embodiment consists of an anti-rotation hole and an anti-rotation protrusion. The cooperation between the anti-rotation protrusion and the anti-rotation hole forms a rigid stop structure, effectively limiting the circumferential displacement of the inner ring 21 and the fixed shaft 40. At the same time, the structure is simple and easy to manufacture, and the insert-type cooperation facilitates the quick installation, disassembly, and maintenance of the tool assembly 10 and the fixed shaft 40.

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

[0080] With this configuration, this embodiment uses a drive motor 50 to directly drive the cutter assembly 10. Due to the use of rolling friction between the inner and outer rings 22 of the bearing 20, power loss is reduced, thereby increasing motor efficiency to over 90%. Simultaneously, the drive method of the drive motor 50, compared to manual operation, ensures stable cutter speed. Combined with the low-resistance characteristics of rolling friction, this effectively improves meat grinding efficiency and uniformity. Furthermore, by utilizing rolling friction to reduce the motor load, the operating temperature of the drive motor 50 can be significantly lowered, 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 blade assembly 10. This configuration allows for a detachable connection between the output shaft of the drive motor 50 and the blade assembly 10, facilitating the removal and cleaning of the blade assembly 10, thus meeting the hygiene requirements of household kitchen appliances. Simultaneously, in case of component damage, the blade assembly 10 or the drive motor 50 can be replaced individually without overall disassembly, improving after-sales maintenance efficiency. Moreover, it supports the replacement of different models of the blade assembly 10 to adapt to various functional needs such as mincing and mixing.

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

[0083] With this configuration, this embodiment offers multiple power supply options, supporting both portable use (e.g., rechargeable batteries, dry cell batteries) and household use (e.g., AC power), thus enabling diverse application scenarios and enhancing product versatility. Furthermore, the battery mode supports outdoor use, while the AC power mode is suitable for extended continuous operation. This multi-power supply approach caters to different user needs and strengthens the product's 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] With this configuration, this embodiment offers multiple types of bearings 20, each suitable for different load requirements. For example, deep groove ball bearings 20 are suitable for light loads, while tapered roller bearings 20 are suitable for heavy loads. Furthermore, the type of bearing 20 can be selected based on the application scenario to further enhance the friction resistance reduction effect; for instance, self-aligning ball bearings 20 can compensate for installation errors.

[0086] Furthermore, in an alternative embodiment, in a small household meat grinder where strength requirements are not high, the blade 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 approach can be used, where the blade edge is made of metal and the main body is made of plastic, balancing cutting performance and lightweight requirements.

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

Claims

1. A meat mincer, characterised in that, include: The tool assembly (10) has a bearing (20) at its bottom; the axis of the bearing (20) coincides with the rotation axis of the tool assembly (10); The meat grinder cup (30) has a fixed shaft (40) 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 external force, 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 formed between the tool assembly (10) and the fixed shaft (40).

2. The meat grinder according to claim 1, characterized in that, The bottom of the cutting tool assembly (10) is provided with a mounting hole (11), and the mounting hole (11) and the outer ring (22) of the bearing (20) are interference fit.

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

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

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 includes: Anti-rotation holes are formed on the bottom end face of the inner ring (21) of the bearing (20) or on the bottom edge of the fixed shaft (40) circumferentially. Anti-rotation protrusions are provided on the bottom edge circumferentially of the fixed shaft (40) or on the bottom end face of the inner ring (21) of the bearing (20); 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.

7. The meat grinder according to any one of claims 1 to 3, characterized in that, The meat grinder also includes: A drive motor (50) has its 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) and the outer ring (22) of the bearing (20) rotate relative to each other, so that rolling friction is formed 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 drive 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 supplies power to the drive motor (50); the power supply component is one of a storage battery, a dry cell battery, or an AC power source.

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

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