Stirring knife and food processor

Abstract

The utility model provides a stirring knife and a food processor. According to one embodiment of the invention, the stirring knife comprises a wing root and a first knife wing, and the first knife wing is connected to the peripheral side of the wing root; the first cutter wing comprises a cutting edge structure and a cutter tail far away from the wing root, the cutting edge structure comprises a cutting edge part and a cutting edge transition part, and the cutting edge transition part is connected with the cutting edge part and the cutter tail; wherein the thickness of the knife tail and the thickness of the knife edge transition part are both larger than the thickness of the knife edge part, the knife edge part is located on the cutting side of the first knife wing, and at least part of the knife tail transition part is located on the cutting side. According to the scheme, the risk that the blade of the stirring cutter is damaged in the process that the cup cover assembly is assembled on the stirring cup can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processors, in particular to a stirring blade and a food processor. BACKGROUND

[0002] The stirring blade of some food processors is arranged on a cup cover assembly. During the process of assembling the cup cover assembly on the stirring cup, the blade edge of the stirring blade can collide with the cup wall of the stirring cup due to installation angle deviation and other factors, resulting in damage to the blade edge of the stirring blade. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a stirring blade and a food processor, which can reduce the risk of damage to the blade edge of the stirring blade during the process of assembling the cup cover assembly on the stirring cup.

[0004] In a first aspect, the present application provides a stirring blade, which comprises a wing root and a first blade wing, the first blade wing being connected to the peripheral side of the wing root; the first blade wing comprises a blade edge structure and a blade tail away from the wing root, the blade edge structure comprises a blade edge part and a blade edge transition part, the blade edge transition part connects the blade edge part and the blade tail; wherein the thickness of the blade tail and the thickness of the blade edge transition part are both greater than the thickness of the blade edge part, the blade edge part is located on the cutting side of the first blade wing, and at least part of the blade tail transition part is located on the cutting side.

[0005] By adopting the above technical scheme, when the stirring blade is placed in the cup body, the blade edge transition part and the blade tail located outside the blade edge part will contact the inner wall of the stirring cup first, the blade edge part can avoid direct collision with the cup wall, and damage to the blade edge part can be avoided. Moreover, since the blade tail and the blade edge transition part are relatively thick, have high structural strength, and are duller than the blade edge part, when the blade tail and the blade edge transition part contact the cup wall, on the one hand, they are not easy to be damaged, and on the other hand, the possibility of damage to the inner wall of the stirring cup can be greatly reduced.

[0006] Optionally, the blade edge transition part smoothly connects the blade edge part and the blade tail.

[0007] The blade edge transition part can make the blade edge part and the blade tail smoothly transition without sharp parts, so that stress concentration can be reduced, and the durability and service life of the stirring blade can be improved.

[0008] Optionally, in the direction in which the blade edge transition part extends from the blade edge part to the blade tail, the thickness of the blade edge transition part gradually increases.

[0009] The thickness of the transition part gradually increases, and the force is gradually dispersed and buffered during transmission, which can further reduce stress concentration, and can make the structure of the blade edge transition part more stable, not easy to bend and deform, and enhance the anti-impact ability of the blade edge transition part.

[0010] Optionally, the thickness of the tail is greater than the thickness of the blade transition.

[0011] The tail is the end part of the blade wing and is located at the outermost side of the blade wing. In the case of accidental contact between the blade and the wall of the blender cup, the tail will first bear the external force. Due to its relatively thicker structure, the tail can block or buffer the external force, thereby avoiding damage to the blade.

[0012] Optionally, the first blade wing further comprises a back structure opposite to the blade structure, and the tail connects the blade structure and the back structure; the tail has a blunt surface extending along the thickness direction of the first blade wing and extending in the direction of the blade structure pointing to the back structure.

[0013] The blunt surface not only further reduces damage to the inner wall of the blender cup, but also reduces the risk of users being cut when cleaning or disassembling the blender blade.

[0014] Optionally, the first blade wing further comprises a root connected to the wing root, and the width of the root is less than the width of the tail.

[0015] Since the root is relatively narrow and small, and the tail is larger in size, the blunt surface can occupy a larger area when extending along the thickness direction of the blade wing and in the direction of the blade structure pointing to the back structure. In addition to protecting the user, the larger blunt surface is also less likely to cause damage to external objects such as the inner wall of the blender cup when accidentally contacting them.

[0016] Optionally, the back structure comprises a back part, and the blade part and the back part are both arc-shaped, the blade part curves in the direction close to the back part, and the back part curves in the direction close to the blade part.

[0017] After being arranged in this way, when the motor drives the blender blade to rotate, the blade part of the blender blade breaks the water, and the arc-shaped back part can guide the water flow to the tail part to leave the blender blade, thereby reducing the resistance.

[0018] Optionally, the number of the first blade wings is multiple, and the blender blade further comprises multiple second blade wings connected to the wing root, the length of the first blade wing is greater than the length of the second blade wing, and the first blade wing and the second blade wing are alternately arranged along the circumferential side of the wing root.

[0019] In this way, more blade wings can simultaneously stir, cut and crush food materials, thereby improving the efficiency of processing food materials. Moreover, the alternately arranged first blade wings and second blade wings help to maintain the balance of the blender blade as a whole, and the first blade wings and second blade wings generate complex stirring flow fields during rotation, which is conducive to stirring and cutting food materials.

[0020] Optionally, one of the first blade wing and the second blade wing is bent upward, and the other is bent downward; or the first blade wing is bent downward, and the second blade wing is bent upward.

[0021] In this way, the food material can be cut from different angles. For food materials with irregular shapes, this multi-angle cutting method can better adapt to the shape of the food material, so that each part can be processed as much as possible, and the situation that part of the food material is not completely processed can be avoided.

[0022] Optionally, the bending angle of the first blade wing is greater than 0° and less than or equal to 15°; and / or,

[0023] the bending angle of the second blade wing is greater than or equal to 10° and less than or equal to 45°; and / or,

[0024] the bending angle of the first blade wing is α, and the bending angle of the second blade wing is β, and the absolute value of the difference between α and β is less than or equal to 30°.

[0025] It is easy to understand that when the bending angle of the blade wing is too large, the blade wing will be subjected to a larger water reaction force during rotation. When the upward bending angle of the blade wing is too large, the blade wing will be subjected to a larger water reaction force, causing the blade wing to have a tendency to move upward and a risk of disengagement. When the upward bending angle of the blade wing is too large, the blade wing will be subjected to a larger downward thrust, which is not conducive to long-term operation. Moreover, since the length of the second blade wing is relatively short, its stress point is more concentrated and can withstand larger cutting and stirring forces. Therefore, by controlling the bending angle of the first blade wing to be within 15° and the length of the second blade wing to be within the range of 10° to 45°, the food material processing efficiency can be improved while the influence of water flow reaction force is reduced. The upward force or downward thrust of the stirring blade caused by the water flow can be minimized, and the mechanical balance between the first blade wing and the second blade wing can be achieved.

[0026] Optionally, the circumscribed circle diameter of the plurality of first blade wings is less than or equal to 80mm;

[0027] A smaller circumscribed circle diameter helps to reduce the mass and rotational inertia of the first blade wing, so the power required by the motor is lower, and the load on the motor can be reduced.

[0028] and / or the difference between the circumscribed circle diameter of the plurality of first blade wings and the circumscribed circle diameter of the plurality of second blade wings is greater than 0 and less than or equal to 30mm.

[0029] The difference between the circumscribed circle diameters of the plurality of first blade wings and the plurality of second blade wings is within the range of 30mm, which can minimize the uneven load caused by the large size difference between the first blade wing and the second blade wing, and improve the stability of the stirring blade during operation.

[0030] In a second aspect, the present application provides a food processor, comprising:

[0031] A cup cover assembly, comprising the stirring blade of any one of the above.

[0032] A stirring cup, wherein the cup cover assembly is assembled to the stirring cup. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 FIG. 1 is an exploded structural schematic diagram of a food processor according to an embodiment;

[0034] Figure 2 FIG. 3 is a connection structural schematic diagram of a stirring blade and a motor according to an embodiment;

[0035] Figure 3 FIG. 4 is a perspective structural sectional view of a stirring blade according to an embodiment;

[0036] Figure 4 FIG. 5 is a side structural schematic diagram of a stirring blade according to an embodiment;

[0037] Figure 5 FIG. 6 is a top structural schematic diagram of a stirring blade according to an embodiment.

[0038] Reference signs: 10, stirring cup; 20, cup cover; 30, motor; 31, output shaft; 40, stirring blade; 41, wing root; 411, shaft hole; 42a, first blade wing; 42b, second blade wing; 421, blade edge structure; 4211, blade edge part; 4212, blade edge transition part; 422, blade tail; 4221, blunt surface; 423, blade back structure; 4231, blade back part; 4232, blade back transition part; 424, blade root; 50, nut. DETAILED DESCRIPTION

[0039] The present application provides a stirring blade 40 and a food processor, which will be described in detail below in combination with the drawings. The features in the following embodiments and implementation manners can be combined with each other without conflict.

[0040] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 FIG. 1 is an exploded structural schematic diagram of a food processor according to an embodiment, Figure 2 FIG. 3 is a connection structural schematic diagram of a stirring blade and a motor according to an embodiment; Figure 3 FIG. 4 is a perspective structural sectional view of a stirring blade according to an embodiment.

[0041] The present application provides a food processor, which comprises a food processing cup and a cup cover assembly. The cup cover assembly is detachably assembled to the food processor.

[0042] The cup cover assembly comprises a cup cover 20, a motor 30 and a stirring blade 40. The cup cover 20 is used to cover the cup opening of the stirring cup 10 to close the cup opening of the stirring cup 10. The motor 30 is assembled to the cup cover 20 and has an output shaft 31 for outputting power, wherein the motor 30 can be an outer rotor motor 30, but is not limited thereto. The stirring blade 40 is detachably connected to the output shaft 31, and the connection mode includes but is not limited to screwing. The motor 30 can drive the stirring blade 40 to rotate, so as to cut and stir the food materials in the stirring cup 10.

[0043] The stirring blade 40 comprises a wing root 41 and a first blade wing 42a connected to the peripheral side of the wing root 41.

[0044] The wing root 41 can be but is not limited to a plate structure, and the wing root 41 is provided with a shaft hole 411 at the center thereof, which penetrates through the thickness direction of the wing root 41. The output shaft 31 of the motor 30 can pass through the shaft hole 411 and be fixed by a nut 50, so that the motor 30 can drive the stirring blade 40 to rotate.

[0045] The first blade wing 42a comprises a blade edge structure 421 and a blade tail 422 away from the wing root 41, and the blade edge structure 421 comprises a blade edge part 4211 and a blade edge transition part 4212 connecting the blade edge part 4211 and the blade tail 422. The thickness of the blade tail 422 and the thickness of the blade edge transition part 4212 are both greater than the thickness of the blade edge part 4211. The blade edge part 4211 is located on the cutting side of the first blade wing 42a and can cut and stir the food materials by rotation. At least part of the blade tail transition part 4212 is located on the cutting side to protect the blade edge part 4211 on the side close to the blade tail 422.

[0046] By adopting the above technical scheme, when the stirring blade is put into the stirring cup 10, the blade tail transition part 4212 and the blade tail 422 located outside the blade edge part 4211 will contact the inner wall of the stirring cup 10 earlier than the blade edge part 4211, so that the blade edge part 4211 can avoid direct collision with the cup wall and damage. Moreover, since the blade tail 422 and the blade tail transition part 4212 are relatively thick and have high structural strength, and are duller than the blade edge part 4211, when the blade tail 422 and the blade tail transition part 4212 contact the cup wall, on the one hand, they are not easy to be damaged, and on the other hand, they can greatly reduce the possibility of damage to the inner wall of the stirring cup 10.

[0047] In one embodiment, the number of the first blades 42a is multiple, and the stirring blade further comprises multiple second blades 42b, the length of the first blade 42a is greater than the length of the second blade 42b. The first blades 42a and the second blades 42b are arranged alternately along the circumferential side of the blade root 41, that is, one second blade 42b is arranged between two adjacent first blades 42a, or one first blade 42a is arranged between two adjacent second blades 42b. In this way, more blades 42 can simultaneously stir, cut and crush food materials, thereby improving the efficiency of processing food materials. Moreover, the alternately arranged first blades 42a and second blades 42b help to maintain the balance of the stirring blade 40 as a whole, and at the same time, the first blades 42a and the second blades 42b generate complex stirring flow fields during rotation, which is conducive to the stirring and cutting of food materials.

[0048] As shown in the embodiment shown in Figure 3 , the number of the first blades 42a is 3, and the number of the second blades 42b is also 3, and the first blades 42a and the second blades 42b are arranged alternately.

[0049] Further, one of the first blades 42a and the second blades 42b is bent upward relative to the blade root 41, and the other is bent downward relative to the blade root 41. In this way, food materials can be cut from different angles. For irregularly shaped food materials, this multi-angle cutting method can better adapt to the shape of the food materials, so that each part can be processed as much as possible, and the situation that part of the food materials is not completely processed can be avoided.

[0050] As shown in Figure 3 , the first blade 42a is bent downward, and the second blade 42b is bent upward. The first blade 42a is bent downward, and due to its longer length, it can reach deeper into the bottom of the food cup during rotation, and more effectively stir and cut the bottom food materials. Of course, in other embodiments, the first blade 42a can be bent upward, and the second blade 42b can be bent downward.

[0051] Please refer to Figure 4 , Figure 4 for a side view structure schematic diagram of the stirring blade 40. In one embodiment, the bending angle of the first blade 42a is greater than 0° and less than or equal to 15°. Illustratively, the bending angle of the first blade 42a can be 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, but not limited thereto.

[0052] Further, the bending angle of the second blade 42b is greater than or equal to 10° and less than or equal to 45°. Illustratively, the bending angle of the second blade 42b can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, but not limited thereto.

[0053] It is easy to understand that when the bending angle of the blade wing is too large, the blade wing will be subjected to a larger water reaction force during rotation. When the upward bending angle of the blade wing is too large, the blade wing is subjected to a larger water reaction force, causing the blade wing to have a tendency to move upward and a risk of disengagement; when the upward bending angle of the blade wing is too large, the blade wing will be subjected to a larger downward thrust, which is not conducive to long-term operation.

[0054] In the present scheme, since the length of the second blade wing 42b is relatively short, the stress point is more concentrated, and it can withstand larger cutting and stirring forces. Therefore, the bending angle of the first blade wing 42a is controlled within 15°, and the length of the second blade wing 42b is controlled within the range of 10° to 45°, which can improve the efficiency of food processing while reducing the influence of water flow reaction force.

[0055] Further, please refer to Figure 4 , the bending angle of the first blade wing 42a is α, the bending angle of the second blade wing 42b is β, and the absolute value of the difference between β and α is less than or equal to 30°. The difference between the bending angles of the first blade wing 42a and the second blade wing 42b is controlled within the range of 30°, which can avoid the upward force or downward force of the water flow on the stirring blade 40 being too high as much as possible, and make the mechanical balance between the first blade wing 42a and the second blade wing 42b as much as possible.

[0056] For example, the absolute value of the difference between β and α can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, but is not limited thereto.

[0057] Further, the bending angle β of the second blade wing 42b is greater than the bending angle α of the first blade wing 42a. The length of the second blade wing 42b is shorter, and during rotation, if the bending angles of the second blade wing 42b and the first blade wing 42a are the same, the force of the water flow on the second blade wing 42b is smaller than that on the first blade wing 42a. Therefore, the bending angle β of the second blade wing 42b is set to be greater than the bending angle α of the first blade wing 42a in the present scheme, so as to further balance the stress between the first blade wing 42a and the second blade wing 42b.

[0058] Please refer to Figure 5 , Figure 5 is a top view structural schematic diagram of the stirring blade 40. Among them, Figure 5 S1 shown in the figure is the circumscribed circle contour of the plurality of first blade wings 42a, and S2 is the circumscribed circle contour of the plurality of second blade wings 42b.

[0059] In one embodiment, the diameter of the circumscribed circle S1 of the plurality of first blade wings 42a is less than or equal to 80 mm. A smaller circumscribed circle diameter helps to reduce the mass and rotational inertia of the blade wing 42, so the power required by the motor 30 is lower, which can reduce the load of the motor 30.

[0060] Further, the difference between the diameter of the circumscribed circle S1 of the plurality of first blades 42a and the diameter of the circumscribed circle S2 of the plurality of second blades 42b is greater than 0 and less than or equal to 30 mm. The difference between the diameters of the circumscribed circles of the plurality of first blades 42a and the plurality of second blades 42b is within the range of 30 mm, which can avoid uneven load caused by too large size difference between the first blades 42a and the second blades 42b, and improve the stability of the stirring blade 40 during operation.

[0061] The common structure of the first blade 42a and the second blade 42b will be introduced below, please continue to refer to Figures 3 to 5 The second blade 42b can also include the blade structure 421, the blade tail 422, the blade edge portion 4211, and the blade transition portion 4212 as described above.

[0062] In an embodiment, the blade transition portion 4212 smoothly connects the blade edge portion 4211 and the blade tail 422. The blade transition portion 4212 of the present scheme can smoothly transition the blade edge portion 4211 and the blade tail 422 without sharp parts, which can reduce stress concentration and improve the durability and service life of the stirring blade 40.

[0063] Further, in the direction from the blade edge portion 4211 to the blade tail 422, the thickness of the blade transition portion 4212 gradually increases. The gradual increase in the thickness of the transition portion gradually disperses and buffers the force during transmission, which can further reduce stress concentration and make the structure of the blade transition portion 4212 more stable and less likely to bend and deform, thereby enhancing the impact resistance of the blade transition portion 4212.

[0064] In an embodiment, the thickness of the blade tail 422 is greater than the thickness of the blade transition portion 4212. As the end portion of the blade 42, the blade tail 422 is located at the outermost side of the blade 42, and in the case of accidental contact between the stirring blade 40 and the wall of the cooking cup, the blade tail 422 will first bear these external forces. By virtue of its relatively thicker structure, it can block or buffer these external forces, avoiding direct damage to the blade edge portion 4211.

[0065] In an embodiment, the blade 42 further includes a blade back structure 423 opposite the blade structure 421, and the blade tail 422 connects the blade structure 421 and the blade back structure 423; the blade tail 422 has a blunt surface 4221 extending in the thickness direction of the blade 42 and in the direction of the blade structure 421 pointing to the blade back structure 423. The blunt surface 4221 not only can further reduce damage to the inner wall of the stirring cup 10, but also can reduce the risk of users being scratched when cleaning or disassembling the stirring blade 40.

[0066] In one embodiment, the blade portion 4211 and the back portion 4231 are both arc-shaped, and the blade portion 4211 is curved in a direction close to the back portion 4231, and the back portion 4231 is curved in a direction close to the blade portion 4211. After being arranged in this way, when the motor 30 drives the stirring blade 40 to rotate, the blade portion 4211 of the stirring blade 40 breaks the water, and the arc-shaped back portion 4231 can guide the water flow to the tail portion 422 to leave the stirring blade 40, thereby reducing the resistance.

[0067] Further, the back structure 423 includes the back portion 4231 and a back transition portion 4232, and the back transition portion 4232 smoothly connects the tail portion 422 and the back portion 4231, so as to further reduce the water flow resistance when the stirring blade 40 rotates.

[0068] Further, the blade wing 42 further includes a blade root 424 connected to the wing root 41, and in a direction from the blade structure 421 to the back structure 423, the size of the blade root 424 is smaller than the size of the tail portion 422. That is, the width of the blade root 424 is smaller than the width of the tail portion 422.

[0069] Since the blade root 424 is relatively narrow and small, and the tail portion 422 has a larger size, the blunt surface 4221 can occupy a larger area when extending along the thickness direction of the blade wing 42 and in the direction from the blade structure 421 to the back structure 423. In addition to the protection of the user, the larger blunt surface 4221 is not easy to cause damage to external articles such as the inner wall of the stirring cup 10 when accidentally contacting these articles.

[0070] In the present embodiment, the above scheme can be applied to the first blade wing 42a, but is not limited thereto. For example, in other embodiments, the blade portion 4211 and the back portion 4231 of the second blade wing 42b can also be arc-shaped, and the size of the tail portion 422 of the second blade wing 42b can also be larger, and the present application will not be repeated here.

[0071] The above only describes the preferred embodiments of the present application and should not be used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A stirring blade, characterized by, The first blade wing (42a) comprises a blade structure (421) and a blade tail (422) away from the wing root (41), the blade structure (421) comprises a blade edge part (4211) and a blade edge transition part (4212), and the blade edge transition part (4212) connects the blade edge part (4211) and the blade tail (422). The thickness of the blade tail (422) and the thickness of the blade edge transition part (4212) are both greater than the thickness of the blade edge part (4211), the blade edge part (4211) is located at the cutting side of the first blade wing (42a), and at least part of the blade tail transition part (4212) is located at the cutting side. The blade edge transition part (4212) smoothly connects the blade edge part (4211) and the blade tail (422).

2. The mixing blade according to claim 1, wherein In the direction in which the blade edge transition part (4212) extends from the blade edge part (4211) to the blade tail (422), the thickness of the blade edge transition part (4212) gradually increases.

3. The mixing blade according to claim 2, wherein The thickness of the blade tail (422) is greater than the thickness of the blade edge transition part (4212).

4. The mixing blade of claim 1, wherein The first blade wing (42a) further comprises a blade back structure (423) opposite to the blade structure (421), the blade tail (422) connects the blade structure (421) and the blade back structure (423); the blade tail (422) has a blunt surface (4221) extending in the thickness direction of the first blade wing (42a) and extending in the direction of the blade structure (421) pointing to the blade back structure (423).

5. The mixing knife according to claim 1, wherein The first blade wing (42a) further comprises a blade root (424) connected to the wing root (41), and the width of the blade root (424) is less than the width of the blade tail (422).

6. The mixing blade of claim 5, wherein The blade back structure (423) comprises a blade back part (4231), the blade edge part (4211) and the blade back part (4231) are both arc-shaped, the blade edge part (4211) bends in the direction close to the blade back part (4231), and the blade back part (4231) bends in the direction close to the blade edge part (4211).

7. The mixing blade of claim 5, wherein The number of the first blade wings (42a) is multiple, the stirring knife further comprises multiple second blade wings (42b) connected to the wing root (41), the length of the first blade wing (42a) is greater than the length of the second blade wing (42b), and the first blade wing (42a) and the second blade wing (42b) are alternately arranged along the circumferential side of the wing root (41).

8. The mixing knife according to claim 1, wherein One of the first blade wing (42a) and the second blade wing (42b) is bent upward, and the other is bent downward; or, 9. The mixing blade of claim 8, wherein, The first blade wing (42a) is bent downward, and the second blade wing (42b) is bent upward. The bending angle of the first blade wing (42a) is greater than 0° and less than or equal to 15°; and / or, 10. The mixing knife according to claim 9, wherein The bending angle of the second blade wing (42b) is greater than or equal to 10° and less than or equal to 45°; and / or, ​ The bending angle of the first blade wing (42a) is α, the bending angle of the second blade wing (42b) is β, and the absolute value of the difference between β and α is less than or equal to 30°.

11. The mixing blade of claim 8, wherein, The diameter of the circumscribed circle of the plurality of first blade wings (42a) is less than or equal to 80 mm; and / or, The difference between the diameter of the circumscribed circle of the plurality of first blade wings (42a) and the diameter of the circumscribed circle of the plurality of second blade wings (42b) is greater than 0 and less than or equal to 30 mm.

12. A food processor, characterized in that, Comprise: A cup cover assembly comprising the stirring blade as claimed in any one of claims 1 to 11; And A stirring cup (10), wherein the cup cover assembly is assembled on the stirring cup (10).

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