Meat grinder for home kitchen

Abstract

The invention relates to the technical field of meat mincing machines, in particular to a meat mincing machine for a home kitchen. Comprising a shell, a cover, a driving mechanism, a low-gear button, a high-gear button and a meat mincing assembly, a cover is movably mounted at the top of the shell, a driving mechanism is movably mounted at the top of the cover, a low-gear button and a high-gear button are fixedly mounted at the top of the driving mechanism, and a meat mincing assembly is rotatably mounted in the shell and connected with the driving mechanism. The meat mincing assembly is driven by the driving mechanism to rotate, the cutting diameter range and the cutting angle are changed, and meat is cut and minced; the problems that in the meat mincing process of an existing meat mincing machine, the cutting angle can only be changed through shearing force, and the meat mincing efficiency cannot be optimal are solved; meanwhile, the problems that the blade can be taken out only after meat paste on the blade is removed, operation is complex, and the convenience of the meat grinder is reduced are solved.

Description

Technical Field

[0001] This invention relates to the field of meat grinder technology, and in particular to a meat grinder for home kitchens. Background Technology

[0002] A meat grinder is a practical small electric kitchen appliance used to quickly grind meat into minced meat or ground meat, eliminating the tedious process of chopping meat by hand. It usually consists of a motor, blades, and a container. The high-speed rotating sharp blades chop meat into small pieces. It can process not only pork, beef, and chicken, but also often has a multi-functional design, which can also be used to grind vegetables, nuts, or make sausages.

[0003] In existing meat grinders, to ensure that the rotating blades can cover the upper, middle, and lower spaces inside the container, at least three blades are usually installed on the drive shaft. This ensures that the blades can grind the meat inside the container from all angles when rotating. However, all three blades rotate horizontally during the grinding process, and can only change the position of the meat and thus the cutting angle by shearing force. This cannot achieve the best grinding efficiency. In addition, after grinding, the meat paste will cover the blades, which needs to be removed before the blades can be taken out. This operation is cumbersome and reduces the convenience of the meat grinder. Summary of the Invention

[0004] The technical objective of this invention is to solve the problems of existing meat grinders, which can only change the cutting angle through shearing force during the meat grinding process, thus failing to achieve optimal grinding efficiency. Furthermore, the need to remove meat residue from the blades before they can be removed is cumbersome and reduces the convenience of the meat grinder. This invention achieves a solution that eliminates the need to change the cutting angle through shearing force, improving grinding efficiency and simplifying the blade removal process, thereby greatly enhancing the convenience of the meat grinder.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A meat grinder for home kitchens includes: a housing, a lid, a drive mechanism, a low-speed button, a high-speed button, and a meat grinding assembly; A cover is movably mounted on the top of the outer casing, and a drive mechanism is movably mounted on the top of the cover. A low-gear button and a high-gear button are fixedly mounted on the top of the drive mechanism. A meat grinder assembly is rotatably mounted inside the outer casing and is connected to the drive mechanism. The drive mechanism drives the meat grinder assembly to rotate and changes the cutting diameter range and cutting angle to cut and grind the meat.

[0006] As a preferred embodiment of the meat grinder for a home kitchen according to the present invention, the meat grinding assembly includes a rotating shaft, a crossbar, a rectangular box, a first extension plate, a first blade, a second extension plate, a second blade, a locking block, and a moving rod. A crossbar is radially mounted in the middle of the rotating shaft. Rectangular boxes are fixedly mounted at both ends of the crossbar. Multiple first extension plates are slidably mounted on one side of the two rectangular boxes in the same direction, and first blades are fixedly mounted on the free ends of the multiple first extension plates. Multiple second extension plates are slidably mounted on the other side of the two rectangular boxes in the same direction, and second blades are fixedly mounted on the free ends of the multiple second extension plates. A locking block is fixedly mounted on the top of the rotating shaft, and a moving rod is slidably mounted inside the rotating shaft.

[0007] As a preferred embodiment of the meat grinder for a home kitchen according to the present invention, the rotating shaft has a circular groove in the middle, and the crossbar is located inside the circular groove. A fixing plate is provided at the bottom of the circular groove, and the fixing plate is located below the crossbar. A first spring and a second spring are respectively provided on both sides of the fixing plate.

[0008] In a preferred embodiment of the meat grinder for a home kitchen according to the present invention, a rectangular plate is provided on the crossbar, and the rectangular plate radially penetrates the crossbar. The bottom of the rectangular plates on both sides of the crossbar are fixedly connected to the top of the first spring and the second spring, respectively. The top of the rectangular plate on any side of the crossbar is fixedly connected to the bottom of the moving rod.

[0009] As a preferred embodiment of the meat grinder for a home kitchen according to the present invention, wherein: a first limiting plate, a second limiting plate, a third limiting plate and a fourth limiting plate are respectively provided on the inner walls of both sides of the rectangular box; the first limiting plate and the second limiting plate on both sides are slidably connected to two first extension pieces respectively; and the third limiting plate and the fourth limiting plate on both sides are slidably connected to two second extension pieces respectively.

[0010] As a preferred embodiment of the meat grinder for a home kitchen according to the present invention, wherein: a first baffle is provided at the end of the two first extension plates away from the first blade, and the first baffle is located between the two first extension plates and the inner wall of the top of the rectangular box; a first compression spring is provided on the inner wall of the top of the rectangular box, and the end of the first compression spring is connected to the first baffle; the first compression spring has a serpentine structure. A second baffle is provided at the end of each of the two second extension plates away from the second blade, and the second baffle is located between the two second extension plates and the inner wall of the bottom of the rectangular box. A second compression spring is provided on the inner wall of the bottom of the rectangular box, and the end of the second compression spring is connected to the second baffle. The second compression spring has a serpentine structure.

[0011] In a preferred embodiment of the meat grinder for a home kitchen according to the present invention, a rolling ball is provided at the top of the moving rod, and the highest point of the rolling ball is lower than the highest point of the locking block.

[0012] In a preferred embodiment of the meat grinder for a home kitchen according to the present invention, the drive mechanism has a slot at its bottom, which cooperates with the block. An arc-shaped protrusion is provided on the outside of the slot, which cooperates with the rolling ball. The slot can be rotated by the drive mechanism, while the arc-shaped protrusion cannot be rotated.

[0013] As a preferred embodiment of the meat grinder for a home kitchen according to the present invention, the first blade and the second blade are both leaf-shaped structures, and the four edges of the first blade and the second blade are all cutting edges, and the outer edges of the two outermost first extension pieces and the two outermost second extension pieces of the two rectangular boxes are all cutting edges.

[0014] In a preferred embodiment of the meat grinder for a home kitchen described in this invention, the sum of the maximum extension distances of the first blade and the second blade is less than the inner diameter of the outer casing.

[0015] The beneficial effects of this invention are: 1. This invention improves the efficiency of meat grinding by incorporating a meat grinding component within the outer casing. The meat grinding component and the drive mechanism work together to rotate the meat grinding component under the drive mechanism. During rotation, the cutting angle is changed and the cutting diameter range is altered by centrifugal force. Furthermore, after the meat is ground, the blades can be removed without removing the meat paste, simplifying the operation process and greatly enhancing the convenience of the meat grinder.

[0016] 2. This invention features a movable rod, a crossbar, a rectangular box, a first blade, and a second blade mounted on a rotating shaft. The rotating shaft drives the entire crossbar, rectangular box, first blade, and second blade to rotate, causing the first and second blades to extend radially outward through centrifugal force, thereby expanding the cutting diameter range. Simultaneously, the movable rod, which slides up and down, drives the crossbar to rotate, causing the rectangular box to swing the first and second blades up and down, changing the cutting angle. This significantly improves the efficiency of meat grinding and reduces the need for excessive blade installation, thus lowering the product's production cost.

[0017] 3. This invention features a first and a second compression spring inside a rectangular box. During the rotation of the rotating shaft, centrifugal force causes the first and second blades to extend. After the meat is minced, the elastic potential energy of the first and second compression springs causes the first and second blades to retract. The meat paste adheres to the outer shell through the centrifugal force of the rotating first and second blades, reducing the amount of meat paste adhering to the surface of the first and second blades. The blades can be directly removed, simplifying the operation process and greatly improving the convenience of the meat grinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure in an embodiment of this disclosure.

[0019] Figure 2 This is a three-dimensional structural diagram of the interior of the outer shell in an embodiment of this disclosure.

[0020] Figure 3 This is a three-dimensional structural diagram of the retraction of the meat grinder blade in an embodiment of this disclosure.

[0021] Figure 4 This is a three-dimensional structural diagram of the extended blade of the meat grinder assembly in an embodiment of this disclosure.

[0022] Figure 5 This is a three-dimensional structural diagram of the internal structure of the rotating shaft in an embodiment of this disclosure.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure inside the rectangular box in an embodiment of this disclosure.

[0024] Figure 7 This is a three-dimensional structural diagram of the interior of the rectangular box from another perspective in an embodiment of this disclosure.

[0025] Figure 8 This is a three-dimensional structural diagram of the bottom of the drive mechanism in an embodiment of this disclosure.

[0026] Reference numerals: 1. Outer shell; 2. Cover; 3. Drive mechanism; 31. Slot; 32. Arc-shaped protrusion; 4. Low-gear button; 5. High-gear button; 6. Meat grinder assembly; 61. Rotating shaft; 611. Circular groove; 612. Fixing plate; 613. First spring; 614. Second spring; 62. Crossbar; 621. Rectangular plate; 63. Rectangular box; 631. First limiting plate; 632. Second limiting plate; 633. Third limiting plate; 634. Fourth limiting plate; 64. First extension piece; 641. First baffle; 642. First compression spring; 65. First blade; 66. Second extension piece; 661. Second baffle; 662. Second compression spring; 67. Second blade; 68. Locking block; 69. Moving rod; 691. Rolling ball. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 8 As shown, a meat grinder for a home kitchen includes: a housing 1, a cover 2, a drive mechanism 3, a low-speed button 4, a high-speed button 5, and a meat grinding component 6; A cover 2 is movably mounted on the top of the outer shell 1, and a drive mechanism 3 is movably mounted on the top of the cover 2. A low-gear button 4 and a high-gear button 5 are fixedly mounted on the top of the drive mechanism 3. A meat grinder assembly 6 is rotatably mounted inside the outer shell 1 and is connected to the drive mechanism 3. The drive mechanism 3 drives the meat grinder assembly 6 to rotate and changes the cutting diameter range and cutting angle to cut and grind the meat.

[0029] The outer shell 1 serves as the main support component of the meat grinder and is made of food-grade safe material. The top of the outer shell 1 is movably installed with a cover 2 by means of a snap-fit ​​connection, which can be easily snapped on and off by home users. The middle of the cover 2 is provided with a through hole for the drive mechanism 3. The inner wall of the through hole is treated with anti-slip treatment to ensure that the drive mechanism 3 does not slip when connected to the meat grinding component 6 and that the power transmission is stable.

[0030] The drive mechanism 3 is the core of the meat grinder, using a small, silent motor. Both the low-speed button 4 and the high-speed button 5 are waterproof and oil-proof. The low-speed button 4 corresponds to the low-speed meat grinding mode, which is suitable for softer meats; the high-speed button 5 corresponds to the high-speed meat grinding mode, which is suitable for harder meats or batch meat grinding scenarios. Users can switch flexibly according to their own needs. The operation is simple and easy to understand, requiring no professional operating skills, and is suitable for various types of home users.

[0031] The meat grinder assembly 6 is rotatably mounted inside the outer casing 1 via bearings. The bearings reduce the friction of the meat grinder assembly 6 during rotation, thereby reducing the load on the drive mechanism 3, which improves the meat grinding efficiency and extends the service life of the equipment. The meat grinder assembly 6 is precisely connected to the bottom connection structure of the drive mechanism 3 to achieve synchronous power transmission, ensuring that the meat grinder assembly 6 can rotate stably after the drive mechanism 3 is started.

[0032] By pressing the low-gear button 4 or the high-gear button 5, the drive mechanism 3 is activated. The drive mechanism 3 outputs power at the corresponding speed according to the selected gear, thereby driving the meat grinding component 6 connected to it to rotate stably. During the rotation, the meat grinding component 6 can simultaneously adjust the cutting diameter range and change the cutting angle, effectively avoiding large pieces of unminced meat, and finally efficiently completing the cutting and grinding of meat, thus improving the meat grinding efficiency.

[0033] like Figures 3 to 7As shown, the meat grinder assembly 6 includes a rotating shaft 61, a crossbar 62, a rectangular box 63, a first extension plate 64, a first blade 65, a second extension plate 66, a second blade 67, a locking block 68, and a moving rod 69. A crossbar 62 is radially rotatably mounted in the middle of the rotating shaft 61. Rectangular boxes 63 are fixedly mounted at both ends of the crossbar 62. Multiple first extension pieces 64 are slidably mounted on one side of the two rectangular boxes 63 in the same direction, and first blades 65 are fixedly mounted on the free ends of the multiple first extension pieces 64. Multiple second extension pieces 66 are slidably mounted on the other side of the two rectangular boxes 63 in the same direction, and second blades 67 are fixedly mounted on the free ends of the multiple second extension pieces 66. A locking block 68 is fixedly mounted on the top of the rotating shaft 61, and a moving rod 69 is slidably mounted inside the rotating shaft 61.

[0034] The rotating shaft 61, serving as the main support and power transmission core of the meat grinder assembly 6, is made of high-strength food-grade stainless steel. A wear-resistant bushing is provided at the connection between the crossbar 62 and the rotating shaft 61, ensuring that the crossbar 62 can rotate flexibly around the rotating shaft 61 while reducing wear during relative rotation. Rectangular boxes 63 are fixedly installed at both ends of the crossbar 62 by welding. The welds are firm and tight, able to withstand the impact force generated during cutting, preventing loosening or detachment during high-speed rotation. The two rectangular boxes 63 are symmetrically distributed on both sides of the rotating shaft 61, with identical dimensions and structure, ensuring balanced force during meat grinding and achieving uniform cutting. The free ends of the multiple first extension pieces 64 are equipped with first blades 65 by welding, and the free ends of the multiple second extension pieces 66 are also equipped with second blades 67 by welding. Both the first blades 65 and the second blades 67 are made of sharp food-grade stainless steel blades. The blades are finely polished, which can quickly cut meat and prevent meat from sticking together during cutting. At the same time, the edges of the blades are rounded to improve safety and prevent hand cuts during disassembly and cleaning.

[0035] A locking block 68 is fixedly installed on the top of the rotating shaft 61 using an integral molding process. The size and shape of the locking block 68 precisely match the connecting slot 31 at the bottom of the drive mechanism 3, enabling a tight engagement. This ensures that after the drive mechanism 3 is started, power can be efficiently transmitted to the rotating shaft 61 through the linkage between the slot 31 and the locking block 68, driving the rotating shaft 61 to rotate synchronously and stably, avoiding slippage and power loss. The rotating shaft 61 has a sliding cavity inside that accommodates the moving rod 69. The moving rod 69 is slidably installed in the sliding cavity, and the inner wall of the sliding cavity is smooth, ensuring that the moving rod 69 can slide flexibly up and down along the axial direction of the rotating shaft 61.

[0036] like Figure 5As shown, a circular groove 611 is provided in the middle of the rotating shaft 61, and the crossbar 62 is located inside the circular groove 611. A fixing plate 612 is provided at the bottom of the circular groove 611, and the fixing plate 612 is located below the crossbar 62. A first spring 613 and a second spring 614 are respectively provided on both sides of the fixing plate 612.

[0037] The crossbar 62 is completely located inside the circular groove 611, which provides installation space. The fixing plate 612 is used to isolate the first spring 613 and the second spring 614, ensuring that the first spring 613 and the second spring 614 do not interfere with each other when stretched and compressed.

[0038] like Figure 5 As shown, a rectangular plate 621 is provided on the crossbar 62, and the rectangular plate 621 radially penetrates the crossbar 62. The bottom of the rectangular plates 621 on both sides of the crossbar 62 is fixedly connected to the top of the first spring 613 and the second spring 614 respectively. The top of the rectangular plate 621 on any side of the crossbar 62 is fixedly connected to the bottom of the moving rod 69.

[0039] The rectangular plate 621 is horizontally positioned and connected to the tops of the first spring 613 and the second spring 614 below it via welding. This connection ensures that the first spring 613 and the second spring 614 move precisely with the vertical deflection of the rectangular plate 621 during stretching and compression. Furthermore, when the moving rod 69 slides up and down, it stably pulls the rectangular plate 621 to deflect, achieving coordinated linkage between the moving rod 69, the rectangular plate 621, the crossbar 62, the first spring 613, and the second spring 614. This provides stable transmission support for adjusting the cutting angles of the first blade 65 and the second blade 67, ensuring smooth and precise blade angle adjustment during meat grinding.

[0040] like Figure 7 As shown, a first limiting plate 631, a second limiting plate 632, a third limiting plate 633, and a fourth limiting plate 634 are respectively provided on the inner walls of both sides of the rectangular box 63. The first limiting plate 631 and the second limiting plate 632 on both sides are slidably connected to two first extension pieces 64, and the third limiting plate 633 and the fourth limiting plate 634 on both sides are slidably connected to two second extension pieces 66.

[0041] The two rectangular boxes 63 are symmetrically distributed on both sides of the rotating shaft 61, with identical size and structure, ensuring balanced force during meat grinding and achieving uniform cutting. The first limiting plate 631 and the second limiting plate 632 on both sides are symmetrically parallel, with a sliding gap precisely matching the size of the first extension piece 64 between them. This ensures the first extension piece 64 can slide flexibly along the gap, improving the stability of its sliding and preventing jamming or skewing during extension and retraction, thus ensuring the smooth extension and retraction of the first blade 65. Similarly, the third limiting plate 633 and the fourth limiting plate 634 on both sides are also symmetrically and parallelly arranged, and their installation positions correspond precisely to the second extension piece 66. A suitable sliding gap is reserved between them. Their limiting principle and installation method are completely consistent with the first limiting plate 631 and the second limiting plate 632. They provide stable limiting guidance for the extension and retraction of the second extension piece 66, prevent the second extension piece 66 from deviating or getting stuck, and ensure that the second blade 67 and the first blade 65 extend and retract synchronously and smoothly, thus ensuring the accuracy and smoothness of the cutting diameter adjustment during the meat grinding process.

[0042] like Figure 6 As shown, a first baffle 641 is provided at one end of the two first extension pieces 64 away from the first blade 65, and the first baffle 641 is located between the two first extension pieces 64 and the top inner wall of the rectangular box 63. A first compression spring 642 is provided on the top inner wall of the rectangular box 63, and the end of the first compression spring 642 is connected to the first baffle 641. The first compression spring 642 has a serpentine structure. A second baffle 661 is provided at one end of each of the two second extension pieces 66 away from the second blade 67, and the second baffle 661 is located between the two second extension pieces 66 and the bottom inner wall of the rectangular box 63. A second compression spring 662 is provided on the bottom inner wall of the rectangular box 63, and the end of the second compression spring 662 is connected to the second baffle 661. The second compression spring 662 has a serpentine structure.

[0043] To achieve the elastic reset of the first extension piece 64 and to control the radial extension and retraction of the first blade 65 with centrifugal force, a first baffle 641 is fixedly installed at the ends of the two first extension pieces 64 away from the first blade 65 by welding. This baffle 641 can simultaneously drive the two first extension pieces 64 to extend and retract synchronously. The first baffle 641 is precisely located between the two first extension pieces 64 and the inner top wall of the rectangular box 63, maintaining a reasonable gap with the inner top wall of the rectangular box 63 and the extension pieces. This ensures that the sliding of the first extension pieces 64 is not affected and that the force of the subsequent compression spring is accurately transmitted. On the inner top wall of the rectangular box 63, a first compression spring 642 is fixedly installed at the center position of the first baffle 641. The first compression spring 642 has good elasticity, toughness and corrosion resistance, can withstand long-term expansion and contraction deformation and is not easy to rust, and is suitable for the environment of contact with meat juice in the kitchen. The end of the first compression spring 642 is firmly connected to the center position of the first baffle 641, and the connection is tightly fitted to ensure that the force of the first compression spring 642 can be evenly transmitted to the first baffle 641 when it expands and contracts, thereby driving the two first extension plates 64 to move synchronously. It is worth noting that the first compression spring 642 has a serpentine structure. Compared with ordinary straight compression springs, the serpentine structure can increase the extension and contraction stroke of the compression spring, improve the elastic buffering effect, and better adapt to the internal space of the rectangular box 63, avoiding the first compression spring 642 from tilting or jamming when it expands and contracts, and ensuring that the first extension plates 64 expand and contract smoothly and reset accurately.

[0044] Similarly, to achieve the elastic reset of the second extension piece 66 and to control the radial extension and retraction of the second blade 67 with centrifugal force, a second baffle 661 is also fixedly installed at the ends of the two second extension pieces 66 away from the second blade 67 by welding. The material, size design, and installation method of the second baffle 661 are completely identical to those of the first baffle 641, and it can simultaneously drive the two second extension pieces 66 to extend and retract synchronously. The material and elastic properties of the second compression spring 662 are completely identical to those of the first compression spring 642, and it can achieve synchronous extension, retraction, and reset with the first compression spring 642. The second compression spring 662 is firmly connected to the center of the second baffle 661, ensuring that the elastic force of the second compression spring 662 is evenly transmitted to the second baffle 661, driving the two second extension plates 66 to move synchronously. The second compression spring 662 is also a serpentine structure, forming a symmetrical cooperation with the first compression spring 642. This ensures the smooth extension and retraction of the second extension plate 66 and the accuracy of its return, and also works in synergy with the first compression spring 642 to ensure that the first blade 65 and the second blade 67 extend and retract radially synchronously during meat grinding, thereby improving meat grinding efficiency and cutting uniformity.

[0045] like Figure 3 As shown, a rolling ball 691 is provided on the top of the moving rod 69, and the highest point of the rolling ball 691 is lower than the highest point of the locking block 68.

[0046] The top of the rotating shaft 61 is fixedly installed with a locking block 68 by an integral molding process. The size and shape of the locking block 68 are precisely matched with the connecting slot 31 at the bottom of the drive mechanism 3, which can achieve a tight engagement. This ensures that after the drive mechanism 3 is started, the power can be efficiently transmitted to the rotating shaft 61 through the linkage between the slot 31 and the locking block 68, so that the rotating shaft 61 can rotate synchronously and stably, avoiding slippage and power loss. To achieve smooth cooperation between the moving rod 69 and the arc-shaped protrusion, and to drive the moving rod 69 to slide up and down, a rolling ball 691 is provided at the top of the moving rod 69. The rolling ball 691 is finely polished, with high smoothness and low friction. It can flexibly fit the arc-shaped protrusion and roll. At the same time, to ensure the normal engagement of the locking block 68 and the locking groove 31 of the drive mechanism 3, and to avoid the rolling ball 691 interfering with the power transmission, the highest point of the rolling ball 691 is lower than the highest point of the locking block 68. A reasonable height distance is reserved between the two. This will not affect the normal rolling of the rolling ball 691 and the vertical extension and retraction of the moving rod 69, and will also effectively prevent the rolling ball 691 from protruding too high, which would prevent the locking block 68 from fully entering the locking groove 31.

[0047] like Figure 8 As shown, the drive mechanism 3 has a slot 31 at its bottom, and the slot 31 cooperates with the block 68. The outer side of the slot 31 has an arc-shaped protrusion 32, and the arc-shaped protrusion 32 cooperates with the rolling ball 691. The slot 31 can be rotated by the drive mechanism 3, while the arc-shaped protrusion 32 cannot be rotated.

[0048] The slot 31 and the block 68 cooperate to achieve a tight engagement, ensuring that after the drive mechanism 3 is started, the power can be efficiently transmitted to the rotating shaft 61 through the linkage of the slot 31 and the block 68, so that the rotating shaft 61 can rotate synchronously and stably, avoiding slippage and power loss. To facilitate the reciprocating sliding of the moving rod 69 with the rolling ball 691, thereby driving the first blade 65 and the second blade 67 to adjust the cutting angle, an arc-shaped protrusion 32 is fixedly provided on the outer side of the slot 31. The arc-shaped protrusion 32 is made of high-strength, wear-resistant, food-grade material, which is compatible with the material of the rolling ball 691. Its surface is finely polished and has a high degree of smoothness, which can reduce the friction between it and the rolling ball 691, ensuring that the rolling ball 691 can roll smoothly along the surface of the arc-shaped protrusion 32. The arc-shaped protrusion 32 and the rolling ball 691 cooperate with each other. The curvature of the arc-shaped protrusion 32 is precisely calculated and perfectly fits the spherical surface of the rolling ball 691. The moving rod 69 slides up and down through the lifting and lowering of the rolling ball 691. It is worth noting that the slot 31 can rotate synchronously with the drive mechanism 3, outputting power and driving the block 68 to rotate together with the drive mechanism 3; while the arc-shaped protrusion 32 adopts a fixed installation design and cannot rotate with the slot 31. It is firmly connected to the bottom of the drive mechanism 3 through a special fastener, and its position remains fixed at all times. This ensures that the arc-shaped protrusion 32 can passively cause the moving rod 69 on the rotating shaft 61 to slide up and down, thereby adjusting the angle of the first blade 65 and the second blade 67. The rotating shaft 61 has a sliding cavity adapted to the moving rod 69. The moving rod 69 is slidably installed in the sliding cavity. The inner wall of the sliding cavity is smooth, ensuring that the moving rod 69 can slide flexibly up and down along the axial direction of the rotating shaft 61.

[0049] like Figure 4 As shown, the first blade 65 and the second blade 67 are both leaf-shaped structures, and the four edges of the first blade 65 and the second blade 67 are all cutting edges. The outer edges of the two outermost first extension pieces 64 and the two outermost second extension pieces 66 of the two rectangular boxes 63 are also cutting edges.

[0050] Both the first blade 65 and the second blade 67 adopt a leaf-shaped structure design. Compared with ordinary flat blades, the leaf-shaped structure can reduce the resistance during cutting. The edges of the first blade 65 and the second blade 67 are all sharpened to sharpen the blades, which can quickly cut and chop meat.

[0051] To further improve the fineness of the minced meat and make full use of the stretching characteristics of the extension plates to expand the cutting range, the outer edges of the two outermost first extension plates 64 and the two outermost second extension plates 66 of the two rectangular boxes 63 are also ground into blades. The first extension plates 64 and the second extension plates 66 can assist in cutting the meat on the outer edge of the rectangular box 63 and fill the edge gaps of the cutting range of the first blade 65 and the second blade 67.

[0052] The sum of the maximum extension distances of the first blade 65 and the second blade 67 is less than the inner diameter of the outer casing 1.

[0053] To ensure the safe and stable operation of the meat grinder and prevent the first blade 65 and the second blade 67 from extending too far and colliding or rubbing against the inner wall of the outer casing 1, while ensuring that the meat can be fully cut within the accommodating cavity of the outer casing 1, it is necessary to limit the sum of the maximum extension distances of the first blade 65 and the second blade 67 to be less than the inner diameter of the outer casing 1. The maximum extension distance of the first blade 65 and the second blade 67 refers to the limit distance that the first extension plate 64 and the second extension plate 66 can extend outwards under centrifugal force, ensuring that the first blade 65 and the second blade 67 do not exceed the safe range when extending to their limit, while maximizing the use of the cutting space.

[0054] The working principle of this invention is as follows: When grinding meat, firstly, the meat grinding component 6 is placed into the outer shell 1, and at the same time, the meat is also placed into the outer shell 1. Then, the cover 2 is closed, and the slot 31 on the drive mechanism 3 is engaged with the block 68. The drive mechanism 3 is started by the low-speed button 4 or the high-speed button 5. The drive mechanism 3 drives the slot 31 to rotate and transmits power to the block 68 through the slot 31, causing the block 68 to rotate. The block 68 will drive the rotating shaft 61 to rotate.

[0055] During the rotation of the rotating shaft 61, the rolling ball 691 on the moving rod 69 will roll on the outer surface of the arc-shaped protrusion, moving from the lowest point to the highest point of the arc-shaped protrusion. During this movement, it will push the moving rod 69 downwards. The moving rod 69 will then cause one end of the rectangular plate 621 to rotate about the crossbar 62 as its axis, while the other end of the rectangular plate 621 will move upwards. The first spring 613 at the bottom of the rectangular plate 621 will be stretched, while the second spring 614 will be compressed. As the rectangular plate 621 drives the crossbar 62 to rotate, the crossbar 62 will simultaneously drive the rectangular boxes 63 at both ends to rotate. The rotation of the rectangular boxes 63 will then drive the first blade 65 and the second blade 67 to rotate. The first blade 65 will move upwards, while the second blade 67 will move downwards. When the rolling ball 691 moves to the arc-shaped protrusion... When the highest point of the protrusion moves towards the lowest point, the first spring 613 and the second spring 614 will drive the rectangular plate 621 to return to its original position through their own elastic potential energy, causing the rectangular plate 621 to rotate in the opposite direction. The rectangular plate 621 will drive the crossbar 62 to rotate in the opposite direction, thereby causing the first blade 65 to move downward and the second blade 67 to move upward and return to its original position. At the same time, the rectangular plate 621 will move upward through the moving rod 69. As the rolling ball 691 rolls on the arc-shaped protrusion, the moving rod 69 will move up and down reciprocally, cooperating with the first spring 613 and the second spring 614, so that the first blade 65 and the second blade 67 rotate around the axis of rotation 61 while simultaneously rotating around the axis of rotation 62, realizing the up and down movement of the first blade 65 and the second blade 67, thereby changing the cutting angle.

[0056] Meanwhile, as the rotating shaft 61 drives the first blade 65 and the second blade 67 to rotate, when the centrifugal force is greater than the elastic potential energy of the first compression spring 642 and the second compression spring 662 and the cutting resistance, the two pairs of first extension plates 64 on the two rectangular boxes 63 will drive the first baffle 641 to move outward. During the movement, the first baffle 641 will push the first compression spring 642 to move and compress the first compression spring 642. The two pairs of first extension plates 64 move between the first limiting plate 631 and the second limiting plate 632. The first extension plates 64 extend outward and drive the first blade 65 to move outward until the first compression spring 642 is compressed to the limit position, and the first extension plates 64 no longer move outward.

[0057] Similarly, the two pairs of second extension plates 66 on the two rectangular boxes 63 will drive the second baffle 661 to move outward. During the movement, the second baffle 661 will push the second compression spring 662 to move and compress the second compression spring 662. The two pairs of second extension plates 66 move between the third limiting plate 633 and the fourth limiting plate 634. The second extension plates 66 extend outward and drive the second blade 67 to move outward until the second compression spring 662 is compressed to the limit position, and the second extension plates 66 no longer move outward.

[0058] This allows the first blade 65 and the second blade 67 to extend radially during meat grinding, changing the cutting diameter range, and simultaneously moving up and down to change the cutting angle, thereby improving the efficiency of meat grinding.

[0059] After the meat is minced, the first blade 65 and the second blade 67 will be driven by the elastic potential energy of the first compression spring 642 and the second compression spring 662 to retract into the rectangular box 63, thereby completing the retraction of the first blade 65 and the second blade 67, which makes it easier to remove the meat mincing assembly 6 or the minced meat.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A meat grinder for a home kitchen, characterized in that, include: The outer casing (1), the cover (2), the drive mechanism (3), the low-speed button (4), the high-speed button (5), and the meat grinder assembly (6); The top of the outer shell (1) is movably fitted with a cover (2), the top of the cover (2) is movably fitted with a drive mechanism (3), the top of the drive mechanism (3) is fixedly fitted with a low-gear button (4) and a high-gear button (5), and a meat grinder assembly (6) is rotatably fitted inside the outer shell (1), the meat grinder assembly (6) is connected to the drive mechanism (3). The meat grinding assembly (6) is driven to rotate by the drive mechanism (3), and the cutting diameter range and cutting angle are changed to cut and grind the meat.

2. A meat grinder for a home kitchen as described in claim 1, characterized in that: The meat grinder assembly (6) includes a rotating shaft (61), a crossbar (62), a rectangular box (63), a first extension plate (64), a first blade (65), a second extension plate (66), a second blade (67), a locking block (68), and a moving rod (69). A crossbar (62) is radially mounted in the middle of the rotating shaft (61). Rectangular boxes (63) are fixedly mounted at both ends of the crossbar (62). Multiple first extension pieces (64) are slidably mounted on one side of the two rectangular boxes (63) in the same direction. A first blade (65) is fixedly mounted on the free end of the multiple first extension pieces (64). Multiple second extension pieces (66) are slidably mounted on the other side of the two rectangular boxes (63) in the same direction. A second blade (67) is fixedly mounted on the free end of the multiple second extension pieces (66). A locking block (68) is fixedly mounted on the top of the rotating shaft (61). A moving rod (69) is slidably mounted inside the rotating shaft (61).

3. A meat grinder for a home kitchen as described in claim 2, characterized in that: A circular groove (611) is provided in the middle of the rotating shaft (61), and the crossbar (62) is located inside the circular groove (611). A fixing plate (612) is provided at the bottom of the circular groove (611), and the fixing plate (612) is located below the crossbar (62). A first spring (613) and a second spring (614) are respectively provided on both sides of the fixing plate (612).

4. A meat grinder for a home kitchen as described in claim 3, characterized in that: A rectangular plate (621) is provided on the crossbar (62), and the rectangular plate (621) penetrates the crossbar (62) radially. The bottom of the rectangular plates (621) on both sides of the crossbar (62) is fixedly connected to the top of the first spring (613) and the second spring (614) respectively. The top of the rectangular plate (621) on any side of the crossbar (62) is fixedly connected to the bottom of the moving rod (69).

5. A meat grinder for a home kitchen as described in claim 3, characterized in that: The rectangular box (63) is provided with a first limiting plate (631), a second limiting plate (632), a third limiting plate (633) and a fourth limiting plate (634) on the inner walls of both sides respectively. The first limiting plate (631) and the second limiting plate (632) on both sides are slidably connected to two first extension pieces (64) respectively, and the third limiting plate (633) and the fourth limiting plate (634) on both sides are slidably connected to two second extension pieces (66) respectively.

6. A meat grinder for a home kitchen as described in claim 2, characterized in that: A first baffle (641) is provided at one end of each of the two first extension pieces (64) away from the first blade (65), and the first baffle (641) is located between the two first extension pieces (64) and the top inner wall of the rectangular box (63). A first compression spring (642) is provided on the top inner wall of the rectangular box (63), and the end of the first compression spring (642) is connected to the first baffle (641). The first compression spring (642) has a serpentine structure. A second baffle (661) is provided at one end of the two second extension pieces (66) away from the second blade (67), and the second baffle (661) is located between the two second extension pieces (66) and the bottom inner wall of the rectangular box (63). A second compression spring (662) is provided on the bottom inner wall of the rectangular box (63), and the end of the second compression spring (662) is connected to the second baffle (661). The second compression spring (662) has a serpentine structure.

7. A meat grinder for a home kitchen as described in claim 2, characterized in that: The top of the moving rod (69) is provided with a rolling ball (691), and the highest point of the rolling ball (691) is lower than the highest point of the locking block (68).

8. A meat grinder for a home kitchen as described in claim 7, characterized in that: The drive mechanism (3) has a slot (31) at the bottom, and the slot (31) cooperates with the block (68). The slot (31) has an arc-shaped protrusion (32) on the outside, and the arc-shaped protrusion (32) cooperates with the rolling ball (691). The slot (31) can be rotated by the drive mechanism (3), and the arc-shaped protrusion (32) cannot be rotated.

9. A meat grinder for a home kitchen as described in claim 2, characterized in that: The first blade (65) and the second blade (67) are both leaf-shaped structures, and the edges of the first blade (65) and the second blade (67) are all cutting edges. The outer edges of the two outermost first extension pieces (64) and the two outermost second extension pieces (66) of the two rectangular boxes (63) are all cutting edges.

10. A meat grinder for a home kitchen as described in claim 2, characterized in that: The sum of the maximum extension distances of the first blade (65) and the second blade (67) is less than the inner diameter of the housing (1).

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