Stirring blade, stirring blade assembly and food processor
By designing a blending blade with alternating blunt and sharp edges, the problem of food processor blades easily injuring hands has been solved, achieving safer and more efficient pulverizing results with lower motor power and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-23
AI Technical Summary
Existing food processors have blades that can easily injure hands, and their motors are powerful and expensive.
Design a mixing blade with two layers of blades, with blunt and sharp blades arranged alternately. The blunt blade contacts the food first, followed by the sharp blade. The angle and size range of the blunt and sharp blades are specifically designed to reduce the risk of hand injury and reduce motor power.
It effectively reduces the risk of hand injury from the mixing blade, improves pulverization efficiency, and reduces motor power and cost.
Smart Images
Figure CN224387314U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of food processors, and more particularly to a mixing blade, a mixing blade assembly, and a food processor. Background Technology
[0002] As people's living standards continue to improve, many different types of food processors have appeared on the market. The functions of food processors mainly include, but are not limited to, making soy milk, juicing, rice paste, mincing meat, shaved ice, making coffee, and / or preparing face masks. Food processors, such as meat grinders, include a food container and a mixing blade inside the container; however, the mixing blade can easily cause injury to the hand. Utility Model Content
[0003] This application provides a mixing blade, a mixing blade assembly, and a food processor, which reduces the risk of hand injury and makes them safer to use.
[0004] This application provides a mixing blade. The mixing blade includes a mounting portion and a blade extending outward from the mounting portion. The blade includes a back and a cutting edge for cutting food. The cutting edge includes a plurality of sharp blade portions and a plurality of blunt blade portions arranged alternately with the sharp blade portions. The cutting edge is divided into a first layer and a second layer along its thickness direction. The ends of the sharp blade portions are located in the first layer, and the ends of the blunt blade portions are located in the second layer. The blunt blade portions protrude from the sharp blade portions in the direction the blade cuts the food. Because the blunt blade portions protrude from the sharp blade portions in the direction the blade cuts the food, the user will come into contact with the blunt blade portions before contacting the sharp blade portions. In other words, by providing blunt blade portions protruding from the sharp blade portions, the user's hand is prevented from coming into contact with the sharp blade portions, thereby preventing the sharp blade portions from cutting the user's hand and making it safer to use. During the mixing blade's food pulverization process, the blunt blade portions perform primary pulverization, and the sharp blade portions perform secondary pulverization, achieving a good pulverization effect.
[0005] Furthermore, the blade back includes an upper surface and a lower surface opposite to the upper surface. The blunt cutting edge includes a blunt cutting surface connected to the lower surface, and the included angle between the blunt cutting surface and the lower surface ranges from 13.3 degrees to 19.8 degrees. The sharp cutting edge includes a sharp cutting surface connected to the upper surface, and the included angle between the sharp cutting surface and the upper surface ranges from 16.9 degrees to 26.6 degrees. Thus, on the one hand, neither the blunt nor the sharp cutting edge is prone to chipping, and on the other hand, the motor power can be less than 300 watts, resulting in low cost.
[0006] Furthermore, the blade back includes an upper surface and a lower surface opposite to the upper surface. The blunt cutting edge includes a blunt cutting surface connected to the upper surface, and the included angle between the blunt cutting surface and the upper surface ranges from 13.3 degrees to 19.8 degrees. The sharp cutting edge includes a sharp cutting surface connected to the lower surface, and the included angle between the sharp cutting surface and the lower surface ranges from 16.9 degrees to 26.6 degrees. Thus, on the one hand, neither the blunt nor the sharp cutting edge is prone to chipping, and on the other hand, the motor power can be less than 300 watts, resulting in low cost.
[0007] Furthermore, the thickness of the blunt blade tip ranges from 0.05 mm to 1 mm. This makes it less likely to injure hands and also provides better pulverization of food.
[0008] Furthermore, the width of the blunt blade ranges from 0.5 mm to 2.4 mm. This makes it less likely to injure hands and also provides a better pulverizing effect on food.
[0009] Furthermore, the blunt edge protrudes from the sharp edge by a length ranging from 0.2 mm to 2.1 mm in the direction the blade cuts the food. This reduces the risk of hand injury and provides better pulverization of the food.
[0010] Furthermore, the width of the blade is between 3 mm and 10 mm. This makes it less likely to injure hands and provides better pulverization of food.
[0011] Furthermore, the end of the blade furthest from the mounting portion is designed as a sharp blade, which improves the pulverization effect on food and reduces motor power.
[0012] Furthermore, the end of the blade near the mounting portion is set as a blunt edge. This simplifies the manufacturing process and makes the production of the stirring blade more convenient.
[0013] This application provides a stirring blade assembly, which includes a blade shaft and a stirring blade as described above, wherein the stirring blade is disposed on the blade shaft.
[0014] This application provides a food processor, which includes: a food container, including a container body and a container lid covering the container body; a main unit; and a mixing blade assembly as described above, disposed inside the food container, wherein the mixing blade assembly is driven by the main unit. Attached Figure Description
[0015] Figure 1 The image shown is a cross-sectional view of one embodiment of the food processor of this application;
[0016] Figure 2 As shown Figure 1 A three-dimensional schematic diagram of the stirring blade assembly shown;
[0017] Figure 3 As shown Figure 2 A top view of the stirring blade shown;
[0018] Figure 4 As shown Figure 3 The AA cross-sectional view shown;
[0019] Figure 5 As shown Figure 3 The BB cross-section shown;
[0020] Figure 6 As shown Figure 2 A three-dimensional schematic diagram of the stirring blade shown;
[0021] Figure 7 As shown Figure 2 The image shows a bottom view of the stirring blade. Detailed Implementation
[0022] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.
[0023] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The use of terms such as “a” or “one” in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. The terms “comprising” or “including” and similar expressions mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The terms “connected” or “linked” and similar expressions are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0024] The food processor 100 can be a blender, juicer, high-speed blender, stir-fry machine, soy milk maker, meat grinder, etc.
[0025] Please see Figures 1 to 2 The food processor 100 includes a food container 40, a main unit 50, and a blending blade assembly 60. The food container 40 is used to hold food such as meat and vegetables, and includes a container body 41 and a container lid 42 covering the container body 41.
[0026] In the illustrated embodiment, the main unit 50 is disposed on the container lid 42, and the stirring blade assembly 60 is disposed inside the food container 40. The stirring blade assembly 60 is driven by the main unit 50. The stirring blade assembly 60 includes a blade shaft 30 and a stirring blade 35, with the stirring blade 35 disposed on the blade shaft 30. The main unit 50 includes a housing and a motor (not shown) disposed within the housing. The motor shaft is connected to the blade shaft 30 of the stirring blade assembly 60. The stirring blade assembly 60 is used to agitate and pulverize the food in the food container 40.
[0027] Please see Figures 3 to 7 The stirring blade 35 includes a mounting portion 10 and a blade 20 extending outward from the mounting portion 10. The blade 20 includes a back 25 and a cutting edge 21 for cutting food. The cutting edge 21 includes a plurality of sharp blades 216 and a plurality of blunt blades 212 arranged alternately with the sharp blades 216. The cutting edge 21 is divided into a first layer and a second layer along its thickness direction. The ends of the sharp blades 216 are located in the first layer, and the ends of the blunt blades 212 are located in the second layer. The blunt blades 212 protrude from the sharp blades 216 in the direction in which the blade 20 cuts food. The stirring blade 35 is mounted to the blade shaft 30 via the mounting portion 10. The number of blunt blades 212 is two or more, and the number of sharp blades 216 is two or more, which can be determined according to the length of the blade 20. The shape and size of the blunt blades 212 can be the same or different. The term "end of the sharp edge 216" refers to the end of the sharp edge 216 that is away from the back of the blade 25. The term "end of the blunt edge 212" refers to the end of the blunt edge 212 that is away from the back of the blade 25.
[0028] Because the blunt blade 212 protrudes from the sharp blade 216 in the direction that the blade 20 cuts the food, the user will come into contact with the blunt blade 212 before contacting the sharp blade 216. In other words, by setting the blunt blade 212 to protrude from the sharp blade 216, the user's hand is prevented from coming into contact with the sharp blade 216, thereby preventing the sharp blade 216 from cutting the user's hand and making it safer to use. During the process of the mixing blade 35 crushing the food, the blunt blade 212 performs primary crushing of the food, and the sharp blade 216 performs secondary crushing of the food, which can achieve a good crushing effect.
[0029] In the illustrated embodiment, the blade back 25 includes an upper surface 251 (see...). Figure 3 ) and a lower surface 252 disposed opposite to the upper surface 251 (see Figure 7 The blunt blade portion 212 includes a blunt cutting surface 217 connected to the lower surface 252, and the included angle between the blunt cutting surface 217 and the lower surface 252 ranges from 13.3 degrees to 19.8 degrees. The sharp blade portion 216 includes a sharp cutting surface 214 connected to the upper surface 251, and the included angle between the sharp cutting surface 214 and the upper surface 251 ranges from 16.9 degrees to 26.6 degrees. Thus, on the one hand, neither the blunt blade portion 212 nor the sharp blade portion 216 is prone to chipping, and on the other hand, the motor power can be less than 300 watts, resulting in low cost.
[0030] In some embodiments, the included angle α between the blunt cutting edge 217 and the lower surface 252 can be 13.3 degrees, 14 degrees, 15 degrees, 16 degrees, 17 degrees, 18 degrees, 19 degrees, 19.8 degrees, or any value between any two adjacent values mentioned above. The included angle β between the sharp cutting edge 214 and the upper surface 251 can be 16.9 degrees, 18 degrees, 19 degrees, 20 degrees, 21 degrees, 21.8 degrees, 22 degrees, 23 degrees, 24 degrees, 25 degrees, 26.6 degrees, or any value between any two adjacent values mentioned above.
[0031] In another embodiment, the blade back 25 includes an upper surface 251 and a lower surface 252 disposed opposite to the upper surface 251. The blunt cutting edge 212 includes a blunt cutting surface 217 connected to the upper surface 251, and the included angle between the blunt cutting surface 217 and the upper surface 251 ranges from 13.3 degrees to 19.8 degrees. The sharp cutting edge 216 includes a sharp cutting surface 214 connected to the lower surface 252, and the included angle between the sharp cutting surface 214 and the lower surface 252 ranges from 16.9 degrees to 26.6 degrees. Thus, on the one hand, neither the blunt cutting edge 212 nor the sharp cutting edge 216 is prone to chipping; on the other hand, the motor power can be less than 300 watts, resulting in low cost.
[0032] In some embodiments, the included angle α between the blunt cutting edge 217 and the upper surface 251 can be 13.3 degrees, 14 degrees, 15 degrees, 16 degrees, 17 degrees, 18 degrees, 19 degrees, 19.8 degrees, or any value between any two adjacent values mentioned above. The included angle β between the sharp cutting edge 214 and the lower surface 252 can be 16.9 degrees, 18 degrees, 19 degrees, 20 degrees, 21 degrees, 21.8 degrees, 22 degrees, 23 degrees, 24 degrees, 25 degrees, 26.6 degrees, or any value between any two adjacent values mentioned above.
[0033] Preferably, the thickness D of the blunt blade 212 is between 0.05 mm and 1 mm. This reduces the risk of injury to the hand and provides better pulverization of food.
[0034] In some embodiments, the thickness D of the end of the blunt cutting edge 212 can be 0.05 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or any value between any two of the above.
[0035] Preferably, the width W2 of the blunt blade 212 ranges from 0.5 mm to 2.4 mm. This reduces the risk of hand injury and provides better pulverization of food.
[0036] In some embodiments, the width W2 of the blunt cutting edge 212 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.4 mm, or any value between any two adjacent values mentioned above.
[0037] The blunt blade 212 protrudes from the sharp blade 216 by a length H ranging from 0.2 mm to 2.1 mm in the direction the blade 20 cuts the food. This design reduces the risk of hand injury and provides better pulverization of the food.
[0038] In some embodiments, the length H of the blunt blade portion 212 protruding from the sharp blade portion 216 in the direction of the blade 20 cutting the food can be 0.2 mm, 0.5 mm, 0.8 mm, 1.1 mm, 1.4 mm, 1.7 mm, 2.1 mm, or any value between any two adjacent values mentioned above.
[0039] Preferably, the width W1 of the blade portion 216 is between 3 mm and 10 mm. This reduces the risk of hand injury and provides better pulverization of food.
[0040] In some embodiments, the width W1 of the blade portion 216 can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, or any value between any two of the above.
[0041] In one embodiment, the end of the blade 21 furthest from the mounting portion 10 is configured as a sharp edge. This results in a higher pulverization effect on food and reduces motor power consumption.
[0042] In one embodiment, the end of the blade 21 near the mounting portion 10 is configured as a blunt edge. This simplifies the manufacturing process and makes the production of the stirring blade more convenient.
[0043] During the development of the food processor 100, the R&D team conducted extensive testing on various parameters of the mixing blade 35. Here is a brief introduction to the testing standards and results.
[0044] Testing standards:
[0045] Sample preparation: Cut 200 grams of standard-sized carrots (about 15-20 cm long) into 2-3 cm pieces.
[0046] Food processor preparation: Use a clean meat grinder and assemble and operate it according to the manufacturer's instructions.
[0047] Instructions: Put the prepared carrot pieces into a meat grinder and grind them.
[0048] Assessment: Pour the crushed carrots into a sieve with 5mm apertures and shake gently. Observe the size and proportion of the remaining carrot particles in the sieve and grade them according to the following criteria.
[0049] grade Carrot residue percentage on sieve Carrot Particle Description Level 1 Less than or equal to 5% It is fine and uniform, with almost no large particles remaining. Level 2 Greater than 5% and less than or equal to 15% Most of the particles are relatively fine, with a small number of larger particles remaining. Level 3 Greater than 15% and ≤ 30% The particle size is uneven, with more and larger particles remaining. Level 4 Greater than 30% The particle size is extremely uneven, with many large particles remaining.
[0050] 1. The width of the blade 216 was tested. The table below shows the time required for different blade widths to grind carrot granules to level 1.
[0051] Sharp edge width time grade 2 mm 52 seconds Level 1 3 mm 30 seconds Level 1 5 mm 20 seconds Level 1 6 mm 15 seconds Level 1 8 mm 13 seconds Level 1 10 mm 8 seconds Level 1 11 mm 6 seconds Level 1
[0052] When the width of the blade 216 is less than 3 mm, it is impossible to crush carrots to level 1 within 30 seconds; when the width of the blade 216 is greater than 10 mm, it is easy to cut the user's hand during use. Therefore, this application limits the width of the blade 216 to between 3 mm and 10 mm, which can ensure crushing efficiency and avoid injuring the user's hand, making it safer to use.
[0053] 2. The length of the blunt blade 212 protruding from the sharp blade 216 in the direction of the blade 20 cutting the food (hereinafter referred to as "the protrusion length of the blunt blade") was tested. The table below shows the time required for mixing carrot particles to reach level 1 with different blunt blade protrusion lengths.
[0054] The protruding length of the blunt edge time grade 0.1 mm 3 seconds Level 1 0.2 mm 7 seconds Level 1 0.5 mm 15 seconds Level 1 0.8 mm 20 seconds Level 1 1.3 mm 25 seconds Level 1 1.7 mm 26 seconds Level 1 2.1 mm 29 seconds Level 1 2.3 mm 35 seconds Level 1
[0055] When the protruding length of the blunt blade is greater than 2.1 mm, it is impossible to crush carrots to level 1 within 30 seconds; when the protruding length of the blunt blade is less than 0.2 mm, the user's hand is likely to come into contact with the sharp blade 216 and be injured. Therefore, this application limits the protruding length of the blunt blade to between 0.2 mm and 2.1 mm, which can ensure crushing efficiency and avoid injury to the user's hand, making it safer to use.
[0056] 3. The thickness of the blunt blade 212 end was tested. The table below shows the time required for stirring carrot particles to reach level 1 with stirring blades of different blunt blade end thicknesses.
[0057]
[0058]
[0059] When the thickness of the blunt blade 212 tip is greater than 1 mm, it is impossible to pulverize carrots to Grade 1 within 30 seconds; when the thickness of the blunt blade 212 tip is less than 0.05 mm, the blunt blade 212 is likely to cut the user's hand. Therefore, this application limits the thickness of the blunt blade 212 tip to between 0.05 mm and 1 mm, which ensures pulverization efficiency while avoiding injury to the user's hand, making it safer to use.
[0060] 4. The width of the blunt blade 212 was tested. The table below shows the time required for mixing carrot particles to reach level 1 with different blunt blade widths.
[0061] width of blunt edge time grade 0.3 mm 5 seconds Level 1 0.5 mm 8 seconds Level 1 1 millimeter 12 seconds Level 1 1.5 mm 17 seconds Level 1 2 mm 23 seconds Level 1 2.4 mm 29 seconds Level 1 2.5 mm 33 seconds Level 1
[0062] When the width of the blunt blade 212 is greater than 2.4 mm, it is impossible to crush carrots to level 1 within 30 seconds; when the width of the blunt blade 212 is less than 0.5 mm, the user's hand is easily cut by the sharp blade 216. Therefore, this application limits the width of the blunt blade 212 to between 0.5 mm and 2.4 mm, which can ensure crushing efficiency and avoid injury to the user's hand, making it safer to use.
[0063] 5. Test the included angle between the blade face 214 and the lower surface 252 of the back of the blade 25 (hereinafter referred to as "blade angle"). The table below shows the motor power required for stirring blades with different blade angles.
[0064]
[0065]
[0066] When the blade angle is less than 16.9 degrees, it is prone to blade rolling during the crushing process; when the blade angle is greater than 26.6 degrees, the motor power needs to be greater than 300 watts, which is costly. Therefore, this application limits the blade angle to between 16.9 and 26.6 degrees, which can both avoid blade rolling and reduce motor power, thus helping to reduce costs.
[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A stirring blade, characterized in that: It includes a mounting part (10) and a blade (20) extending outward from the mounting part (10). The blade (20) includes a back (25) and a cutting edge (21) for cutting food. The cutting edge (21) includes a plurality of sharp blades (216) and a plurality of blunt blades (212) arranged alternately with the plurality of sharp blades (216). The cutting edge (21) is divided into a first layer and a second layer along the thickness direction. The ends of the plurality of sharp blades (216) are located in the first layer, and the ends of the plurality of blunt blades (212) are located in the second layer. The plurality of blunt blades (212) protrude from the sharp blades (216) in the direction in which the blade (20) cuts food.
2. The stirring blade as described in claim 1, characterized in that: The back of the blade (25) includes an upper surface (251) and a lower surface (252) opposite to the upper surface (251). The blunt edge portion (212) includes a blunt edge surface (217) connected to the lower surface (252). The included angle between the blunt edge surface (217) and the lower surface (252) is between 13.3 degrees and 19.8 degrees. The sharp edge portion (216) includes a sharp edge surface (214) connected to the upper surface (251). The included angle between the sharp edge surface (214) and the upper surface (251) is between 16.9 degrees and 26.6 degrees.
3. The stirring blade as described in claim 1, characterized in that: The back of the blade (25) includes an upper surface (251) and a lower surface (252) opposite to the upper surface (251). The blunt edge portion (212) includes a blunt edge surface (217) connected to the upper surface (251). The included angle between the blunt edge surface (217) and the upper surface (251) is between 13.3 degrees and 19.8 degrees. The sharp edge portion (216) includes a sharp edge surface (214) connected to the lower surface (252). The included angle between the sharp edge surface (214) and the lower surface (252) is between 16.9 degrees and 26.6 degrees.
4. The stirring blade as described in claim 1, characterized in that: The thickness of the end of the blunt cutting edge (212) ranges from 0.05 mm to 1 mm.
5. The stirring blade as described in claim 1, characterized in that: The width of the blunt cutting edge (212) ranges from 0.5 mm to 2.4 mm.
6. The stirring blade as described in claim 1, characterized in that: The length of the blunt blade (212) protruding from the sharp blade (216) in the direction that the blade (20) cuts the food ranges from 0.2 mm to 2.1 mm.
7. The stirring blade as described in claim 1, characterized in that: The width of the blade (216) ranges from 3 mm to 10 mm.
8. The stirring blade as described in claim 1, characterized in that: The end of the blade (21) away from the mounting portion (10) is configured as a sharp edge; and / or, the end of the blade (21) near the mounting portion (10) is configured as a blunt edge.
9. A stirring blade assembly, characterized in that: It includes a cutter shaft (30) and a stirring blade as described in any one of claims 1 to 8, the stirring blade being disposed on the cutter shaft (30).
10. A food processor, characterized in that: It includes: The food container (40) includes a container body (41) and a container lid (42) covering the container body (41); Host (50); and The stirring blade assembly as described in claim 9 is disposed within the food container (40), and the stirring blade assembly is driven by the host (50).