Cutting blade for juicer

Abstract

A cutting blade for a juicer. The cutting blade is located at the upper part of a screw of a juicer, and agitates, cuts and crushes a juicing material in advance by means of rotation. The cutting blade comprises a base for receiving the driving force of the juicer, wherein a first cutting edge, a second cutting edge and a third cutting edge are provided in sequence on the peripheral side of the base from top to bottom in the direction of height thereof, and the first cutting edge, the second cutting edge and the third cutting edge extend spirally upwards along the center of rotation of the base. According to the cutting blade for a juicer, by utilizing a three-section blade edge design, and making the edge tip of the first cutting edge be located at the foremost end in a rotation direction and protrude radially outwards, the juicing material is preliminarily gripped and crushed; the radial height of the second cutting edge is lower than that of the first cutting edge and the third cutting edge, such that the preliminarily crushed juicing material can be cut more finely; and the third cutting edge cooperates with a filter screen to form a crushing space, such that the remaining larger juicing material particles are finally chopped, thereby preventing the screw from jamming.

Description

The blade of a juicer Technical Field

[0001] This utility model relates to the field of household machinery technology, and in particular to a cutter for a juicer. Background Technology

[0002] With the improvement of people's living standards, various small food processing appliances are increasingly entering ordinary households, among which juicers are a common type. Juicers use high-speed rotating blades to chop fruits and vegetables and use filters and other structures to filter out the pulp, thereby producing juice.

[0003] Existing juicers typically use pre-cutting blades in the hopper to pre-cut larger fruits such as apples and pears before feeding them into the juicing screw for extraction. This pre-cutting reduces the size of larger fruits and increases the cutting area when they enter the juicing zone, thus improving the juice yield and extraction efficiency. As a result, larger pieces of material can be fed into the hopper for juicing.

[0004] However, in practical applications, the cutting blades inside the hopper typically rotate synchronously with the juicing screw, and their rotation speed is relatively low. This means that when dealing with juicing materials that are hard and have a smooth surface (such as apples and pears), the low rotation speed of the cutting blades cannot form an effective initial cut or crushing opening on the surface of the material. This causes such juicing materials to slip easily in the hopper and require a long time to be completely crushed. Therefore, the extension angle and shape design of the pre-cutting blades are key parameters that determine the pre-cutting and crushing effect of such juicing materials. Optimizing the structural design of the cutting blades can make the cut vegetable or fruit pieces smaller and have more cuts, thereby producing more juice after entering the screw. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a three-section radially staggered blade design for juicers, enabling efficient multi-stage crushing of juicing materials and significantly improving juicing efficiency and yield.

[0006] To achieve the above objectives, the present invention designs a juicer cutter. The cutter is located on the upper part of the juicer's screw and pre-crushes and breaks down the juicing material through rotation. The cutter includes a base for receiving the driving force of the juicer. A first cutting blade, a second cutting blade, and a third cutting blade are sequentially arranged from top to bottom along the height direction of the base. The first, second, and third cutting blades extend spirally upwards along the rotation center of the base. Specifically, the cutting edge of the first cutting blade is located at the foremost position relative to the cutting edges of the second and third cutting blades in the rotation direction; the radial height of the second cutting blade is lower than the radial height of the first and third cutting blades; and the third cutting blade is partially placed inside the juicer's filter screen and cooperates with the filter screen to form a crushing space.

[0007] Preferably, the third cutting edge is placed inside the filter screen of the juicer and cooperates with the filter screen to form a crushing space.

[0008] Preferably, the first cutting edge, the second cutting edge, and the third cutting edge are all provided with a serrated structure on the side away from the substrate.

[0009] Preferably, the inner wall of the filter screen is provided with a plurality of vertically arranged strip-shaped ribs, the breaking ribs are located within the breaking space, and there is a gap between the breaking ribs and the third cutting edge.

[0010] Preferably, the cutting edge of the first cutting edge has a horizontally extending straight portion at its tip, the straight portion being located on the side of the first cutting edge opposite to the second cutting edge.

[0011] Preferably, both the first and third cutting edges extend upward from the lower end face of the substrate.

[0012] Preferably, in the direction of rotation, the cutting edge of the third cutting edge is located at the front end of the cutting edge of the second cutting edge.

[0013] Preferably, the substrate has a frustum structure.

[0014] Preferably, the substrate, the first cutting edge, the second cutting edge, and the third cutting edge are all made of metal.

[0015] Preferably, the bottom of the substrate is provided with a connection structure that mates with the screw.

[0016] Preferably, the cutting edge contours of the first, second, and third cutting edges are all one of the following: a circular arc, a parabola, or an arc formed by splicing multiple straight lines.

[0017] The juicer blade designed in this invention employs a three-stage blade design, with the tip of the first blade positioned at the forefront in the rotational direction and protruding radially outward, achieving initial grasping and crushing of the juicing material. The second blade, with a lower radial height than the first and third blades, enables finer cutting of the initially crushed juicing material. The third blade, in conjunction with the filter screen, forms a crushing space to ultimately crush the remaining larger juicing material particles, preventing the screw from jamming. This multi-stage cutting method can effectively handle juicing materials of various hardness and size, significantly improving the cutting and crushing effect on harder, smoother juicing materials, making it easier for the cut juicing material to produce juice when it enters the subsequent screw area. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the cutter of the juicer provided in an embodiment of this application.

[0019] Figure 2 is a three-dimensional exploded view of Figure 1.

[0020] Figure 3 is a schematic diagram of the cutter structure provided in an embodiment of this application.

[0021] Figure 4 is a schematic diagram of the cutter structure provided in an embodiment of this application.

[0022] Figure 5 is a schematic diagram of the cutter structure provided in the embodiment of this application.

[0023] Figure 6 is a schematic diagram of the cutter structure provided in an embodiment of this application.

[0024] Among them: cutter 100, screw 101, filter screen 102, rib 103, base 10, mortise 11, first cutting edge 20, straight part 21, second cutting edge 30, third cutting edge 40, and crushing space 50. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] As shown in Figures 1 to 6, the cutter 100 of the juicer described in this embodiment is located on the upper part of the screw 101 of the juicer. It pre-crushes and breaks down the juicing material by rotating. In specific implementation, the cutter 100 of this embodiment is located in the hopper (not shown) at the upper part of the juicer. The hopper is detachably installed and fixed to the upper part of the juicer. The cutter 100 is connected to the screw 101 of the juicer, so that the base 10 receives the driving force and rotates.

[0027] The cutter 100 includes a base 10 for receiving the driving force of the juicer. A first cutting blade 20, a second cutting blade 30, and a third cutting blade 40 are arranged sequentially from top to bottom along the height direction of the base 10. The first cutting blade 20, the second cutting blade 30, and the third cutting blade 40 extend spirally upward along the rotation center of the base 10. The cutting edge of the first cutting blade 20 is located at the foremost position in the rotation direction relative to the cutting edges of the second cutting blade 30 and the third cutting blade 40. The radial height of the second cutting blade 30 is lower than that of the first cutting blade 20 and the third cutting blade 40. The third cutting blade 40 is partially placed inside the filter screen 102 of the juicer and cooperates with the filter screen 102 to form a crushing space 50.

[0028] After the juicer is started, the motor drives the screw 101 to rotate, and the base 10 also begins to rotate through the transmission connection with the screw 101, thereby driving the first cutting blade 20, the second cutting blade 30, and the third cutting blade 40 on it to rotate together. When the material to be juiced (such as apples, pears, carrots, etc.) is put into the hopper through the opening at the top for juicing:

[0029] First, since the cutting edge of the first cutting blade 20 is located at the front end of the cutting edge of the second cutting blade 30 and the third cutting blade 40 in the rotation direction and protrudes radially outward, this design allows the first cutting blade 20 to contact the added juicing material first when the base 10 rotates, thereby achieving initial compression and crushing of harder juicing materials (such as carrots).

[0030] Next, the juice material that has been initially broken down by the first cutting blade 20 will come into contact with the second cutting blade 30. Specifically, the radial height of the second cutting blade 30 is lower than that of the first cutting blade 20 and the third cutting blade 40, and it is located in the middle position between the two. That is, because the radial position of the second cutting blade 30 is relatively inward, it can process the juice material that has been initially broken down by the first cutting blade 20, avoiding direct cutting of larger pieces of juice material. It is mainly responsible for more fine cutting of the broken juice material, further reducing the size of the juice material, thereby reducing the load and wear of the cutter.

[0031] Finally, as the substrate 10 rotates, larger juicing material particles that were not completely crushed by the first and second cutting blades 20 and 30 enter the working area of ​​the third cutting blade 40. The third cutting blade 40 operates similarly to the second cutting blade 30, not passively relying on the weight of the material itself or the pressure from the preceding blades, but actively agitating and crushing the material during rotation. Furthermore, the rotational agitation of the first and second cutting blades 20 and 30 causes the material in the hopper to continuously tumble and contact the various blades in different postures. This allows even larger pieces of material to be repeatedly cut and crushed by multiple blades, rather than relying solely on the pressure from the area below the single first cutting blade 20. This active agitation and crushing method can more effectively reduce the size of the material, decrease resistance when it enters the screw 101, and significantly reduce the possibility of the screw 101 jamming.

[0032] In some embodiments, as shown in Figures 1 and 2, the third cutting edge 40 is partially placed inside the filter screen 101 of the juicer and cooperates with the filter screen 102 to form a crushing space 50. Specifically, as the substrate 10 rotates, the third cutting edge 40 located inside the filter screen 102 forms a dynamic crushing space 50 with the inner wall of the filter screen 102. The juicing material entering this space is subjected to dual extrusion forces from the rotating third cutting edge 40 and the fixed inner wall of the filter screen 102. This synergistic extrusion action can effectively break the remaining larger juicing material particles into irregular shapes, increasing their surface area, which is beneficial for the screw 101 to extract juice more effectively and improve the juice yield. At the same time, since the food has been fully crushed before entering the screw 101, the load on the screw 101 is reduced, the juicing process is smoother, and the screw 101 is effectively prevented from jamming, resulting in a better user experience.

[0033] In some embodiments, as shown in Figures 1, 2, 3, and 4, the first cutting blade 20, the second cutting blade 30, and the third cutting blade 40 are all provided with serrated structures on the side opposite to the substrate 10. In this embodiment, these serrated structures form multiple blade tips on the blades, significantly enhancing the cutting performance of the cutter. Especially for juicing materials with abundant fibers, hard skin, or smooth surfaces (such as apples and pears), the serrated blades can more easily pierce and tear the skin and fibers of the juicing material, thereby improving cutting efficiency. In addition, the serrated structures can also increase the contact area and friction between the blades and the juicing material, further improving the stability of gripping and cutting, and preventing the juicing material from being bounced away or thrown out under the action of the rotating cutting blades.

[0034] In some embodiments, as shown in Figures 1 and 2, the inner wall of the filter screen 102 is provided with a plurality of vertically arranged strip-shaped ribs 103. The crushing ribs are located within the crushing space 50, and there is a gap between the crushing ribs and the third cutting blade 40. In this way, since the crushing ribs 103 are static structures fixed to the inner wall of the filter screen 102, while the third cutting blade 40 is in a rotating state, the gap between the two forms a dynamic crushing zone. That is, after the juicing material particles enter the crushing space 50, they will be clamped between the crushing ribs 103 and the third cutting blade 40. With the rotation of the third cutting blade 40, the juicing material is subjected to the combined action of multiple forces such as cutting, squeezing and grinding, so as to efficiently process the larger particles of juicing material within the limited crushing space 50, so that they are fully crushed and form an irregular surface, thereby improving the juice yield.

[0035] In some embodiments, as shown in Figures 2 and 3, the cutting edge of the first cutting blade 20 has a horizontally extending straight portion 21 at its tip, located on the side of the first cutting blade 20 opposite to the second cutting blade 30. In this embodiment, compared to the inclined plane, the design of the straight portion 21 prevents the juice material from being guided upwards and thrown out of the hopper during the cutting process, thus avoiding problems such as splashing of the juice material. At the same time, the straight portion 21 makes the cutting edge of the first cutting blade 20 sharper and more pointed, which not only improves the cutting efficiency but also makes the cutting process of the first cutting blade 20 smoother and more fluid.

[0036] In some embodiments, as shown in Figures 2, 4, and 5, both the first cutting blade 20 and the third cutting blade 40 extend upwards from the lower end surface of the base 10. With this structural design, after the base 10 is connected to the screw 101, the first cutting blade 20 and the third cutting blade 40 smoothly transition into the screw 101, allowing the food to smoothly enter the working area of ​​the screw 101 after being cut and guided by the first cutting blade 20 and the third cutting blade 40. This transition design significantly improves the fluidity of the food during juicing, avoids jamming or blockage, ensures that the food can be efficiently crushed and continuously pushed into the screw area, and reduces the load and wear on the equipment.

[0037] In some embodiments, as shown in Figures 4 and 5, the cutting edge of the third cutting blade 40 is located at the front end of the cutting edge of the second cutting blade 30 in the rotation direction. With this structural design, when the food first comes into contact with the first cutting blade 20, it is initially crushed and quickly enters the working area of ​​the second cutting blade 30. Since the cutting edge of the third cutting blade 40 is located at the front end of the second cutting blade 30, the food can smoothly enter the cutting area of ​​the second cutting blade 30 for crushing after passing through the third cutting blade 40. During this process, the third cutting blade 40 not only continues to cut the food but also tumbles it through rotational stirring. The second cutting blade 30, with its concave structure and cooperation with the inner wall of the hopper, can effectively crush the tumbled food, preventing it from getting stuck or stagnant due to uneven cutting.

[0038] In some embodiments, as shown in Figures 3, 5, and 6, the substrate 10 has a frustum structure. With this design, the first cutting blade 20, the second cutting blade 30, and the third cutting blade 40 extend in a spiral pattern along the rotation center of the substrate 10 to the top of the substrate 10, gradually narrowing as they move. This spiral arrangement allows the juicing material to experience a gradually narrowing space during the cutting process. Specifically, the first cutting blade 20 is located in a larger space, enabling initial cutting and crushing of the food. When the already crushed food pieces come into contact with the second cutting blade 30 and the third cutting blade 40, the food enters the gradually narrowing space and undergoes more thorough cutting, crushing, and pulverization. This helps to effectively improve the cutting effect, ensuring that the food is fully cut and crushed to the ideal degree of crushing.

[0039] In some embodiments, the base 10, the first cutting edge 20, the second cutting edge 30, and the third cutting edge 40 are all made of metal. Metal materials, especially stainless steel or alloy steel, have high hardness and wear resistance, enabling them to remain sharp over long-term use, reducing blade wear caused by friction and cutting, and are less prone to deformation or breakage, ensuring the stability and safety of the cutting effect.

[0040] In some embodiments, as shown in Figures 2 and 4, the bottom of the base 10 is provided with a connection structure that mates with the screw 101. Specifically, the bottom of the base 10 is provided with a mortise 11, while the top of the screw 101 is provided with a matching tenon to ensure precise alignment between the two and avoid usage problems caused by weak connection or inaccurate alignment.

[0041] In some embodiments, as shown in Figures 4, 5, and 6, the cutting edge contours of the first cutting edge 20, the second cutting edge 30, and the third cutting edge 40 are all one of the following: a circular arc, a parabola, or an arc composed of multiple straight lines. Thus, compared to a long, straight cutting edge structure, this arc-shaped cutting edge can apply greater pressure to the material surface in the initial stage of contact with the juicing material, thereby more effectively forming the initial breakage.

[0042] The juicer blade provided in this embodiment employs a three-stage blade design, with the tip of the first blade positioned at the forefront in the rotational direction and protruding radially outward, achieving initial grasping and crushing of the juicing material. The second blade, with a lower radial height than the first and third blades, enables finer cutting of the initially crushed juicing material. The third blade, in conjunction with the filter screen, forms a crushing space to ultimately crush the remaining larger juicing material particles, preventing the screw from jamming. This multi-stage cutting method can effectively handle juicing materials of various hardness and size, significantly improving the cutting and crushing effect on harder, smoother juicing materials, making it easier for the cut juicing material to produce juice when it enters the subsequent screw area.

[0043] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cutter for a juicer, said cutter being located on the upper part of the screw of the juicer, and pre-crushing and breaking down the juicing material by rotation, characterized in that, The cutter includes a base for receiving the driving force of a juicer. A first cutting blade, a second cutting blade, and a third cutting blade are arranged sequentially from top to bottom along the height direction of the base. The first cutting blade, the second cutting blade, and the third cutting blade extend spirally upward along the rotation center of the base. The cutting edge of the first cutting blade is located at the foremost position in the rotation direction relative to the cutting edges of the second cutting blade and the third cutting blade. The radial height of the second cutting blade is lower than the radial height of the first cutting blade and the third cutting blade.

2. The cutter of the juicer according to claim 1, characterized in that, The third cutting edge is placed inside the filter screen of the juicer and cooperates with the filter screen to form a crushing space.

3. The cutter of the juicer according to claim 1, characterized in that, The first cutting edge, the second cutting edge, and the third cutting edge are all provided with a serrated structure on the side away from the substrate.

4. The cutter of the juicer according to claim 1, characterized in that, The inner wall of the filter screen is provided with a plurality of vertically arranged strip-shaped ribs, the breaking ribs are located within the breaking space, and there is a gap between the breaking ribs and the third cutting edge.

5. The cutter of the juicer according to claim 1, characterized in that, The first cutting edge has a horizontally extending straight portion at its cutting edge end, the straight portion being located on the side of the first cutting edge opposite to the second cutting edge.

6. The cutter of the juicer according to claim 1, characterized in that, Both the first and third cutting edges extend upward from the lower end face of the substrate.

7. The cutter of the juicer according to claim 1, characterized in that, In the direction of rotation, the cutting edge of the third cutting edge is located at the front end of the cutting edge of the second cutting edge.

8. The cutter of the juicer according to claim 1, characterized in that, The substrate has a frustum structure.

9. The cutter of the juicer according to claim 1, characterized in that, The substrate, the first cutting edge, the second cutting edge, and the third cutting edge are all made of metal.

10. The cutter of the juicer according to claim 1, characterized in that, The cutting edge contours of the first, second, and third cutting edges are all one of the following: a circular arc, a parabola, or an arc formed by splicing multiple straight lines.

Images