A stirring blade, a grinding cup assembly and a coffee grinder

Abstract

The application discloses a stirring blade, a grinding cup assembly and a coffee grinder. The cutting side of the stirring blade is provided with a blade edge ridge which is an inner concave arc structure. The stirring blade comprises a mounting portion for fixed connection with a rotating shaft and at least two blade wings which extend outward from the periphery of the mounting portion. The tail part of the blade wing is inclined to the Z direction and is bent upward. The stirring blade, the grinding cup assembly and the coffee grinder can improve the grinding efficiency and effect.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and more specifically to a stirring blade, a grinding cup assembly, and a coffee grinder. Background Technology

[0002] Coffee grinders are mainly used for grinding dry ingredients such as nuts. Unlike liquid grinding and chopping modes, where ingredients are ground by water through vertical convection within the container, dry ingredients are ground because there is no water to move them up and down. The movement of the ingredients is more determined by the shape and structure of the blades.

[0003] However, existing coffee grinder blades generally use a straight blade edge structure, such as the mixing blade assembly disclosed in Chinese patent number CN208371667U. During the mixing process, when the food is cut by the blade, the food escapes to the cup wall due to the centrifugal force generated by the blade on the food being cut, that is, away from the center of the blade, thereby reducing the cutting frequency. The mixing efficiency and effect are still insufficient. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a stirring blade, a grinding cup assembly and a grinding machine, which can improve grinding efficiency and effect.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a stirring blade, wherein the cutting side of the stirring blade is provided with a cutting edge, and the cutting edge is a concave arc-shaped structure;

[0006] The stirring blade includes a mounting portion for fixed connection with a rotating shaft and at least two blades extending outward from the periphery of the mounting portion, the tails of which are inclined in the Z direction and bent upward.

[0007] In this context, the extension direction of the blade wing is taken as the X direction, the axis of rotation is taken as the Y direction, and the Z direction is perpendicular to the horizontal plane formed by the X and Y directions.

[0008] The mixing blade provided by this technical solution adopts a concave arc-shaped blade edge, which is more in line with the cutting characteristics of dry ingredients. During the mixing process, the dry ingredients are brought closer to and gathered in the center of the grinding cup cavity under the action of its concave arc structure, thereby increasing the frequency of cutting the ingredients and thus improving the grinding efficiency and grinding effect.

[0009] In a preferred embodiment, the blade includes a bent portion, a horizontal portion, and a tail portion connected in sequence. The bent portion bends downward and connects to the edge of the mounting portion. The horizontal portion is parallel to the mounting portion. The tail portion is inclined in the Z direction and bends upward and connects to the outside of the horizontal portion.

[0010] The blade in this technology has a concave structure consisting of a bent section, a horizontal section and a tail section connected in sequence, which provides support for the ingredients and helps to improve the mixing efficiency and effect.

[0011] In a preferred embodiment, the tail of the blade is tilted at an angle of 20° to 40° in the Z direction, which makes it easier for the ingredients to gather towards the center of the mixing.

[0012] In a preferred embodiment, the angle between the bent portion and the Y direction is 25° to 45°, resulting in a simple structure and convenient processing.

[0013] In a preferred embodiment, the angle between the tail and the Y direction is 30° to 50°, resulting in a simple structure that is easy to process.

[0014] In a preferred embodiment, only the cutting side of the blade has a cutting edge to facilitate machining. In this case, the mounting part is only used for fixed connection with the rotating shaft and is not responsible for cutting. Cutting is achieved entirely by the blade.

[0015] In a preferred embodiment, the mounting section and the cutting side of the blade are both provided with a cutting edge. The cutting edge is longer, which means it has a longer cutting length and can achieve better crushing efficiency and effect.

[0016] In a preferred embodiment, the radius of the arc-shaped structure of the blade edge is 15mm to 55mm, which can achieve higher stirring efficiency.

[0017] In a preferred embodiment, the stirring blade is a one-piece molded structure, which provides better stability and durability.

[0018] A coffee grinder assembly includes a cup body, a blade holder, and a stirring blade as described in any of the above technical solutions, wherein the stirring blade is mounted on the blade holder.

[0019] The grinding cup assembly in this technology uses the aforementioned stirring blade, which helps dry ingredients to gather and concentrate towards the center of the inner cavity of the cup during the stirring process, thereby increasing the frequency of ingredient cutting and thus improving grinding efficiency and grinding effect.

[0020] A coffee grinder includes a main unit and a grinding cup assembly as described above, the grinding cup assembly being mounted on the main unit.

[0021] The coffee grinder in this technology uses the aforementioned grinding cup assembly to improve the movement pattern of ingredients, thereby increasing grinding efficiency and grinding effect.

[0022] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are:

[0023] The present invention provides a stirring blade with a concave arc-shaped blade edge, which is more in line with the cutting characteristics of dry ingredients. During the stirring process, the dry ingredients are brought closer to and gathered in the center of the grinding cup cavity under the action of its concave arc structure, thereby increasing the frequency of cutting the ingredients and thus improving the grinding efficiency and grinding effect.

[0024] A coffee grinding cup assembly employing the aforementioned stirring blade can improve coffee grinding efficiency and effectiveness;

[0025] A coffee grinder using the above-mentioned grinding cup assembly can improve grinding efficiency and results.

[0026] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the stirring blade of this utility model;

[0029] Figure 2 This is a side view of the stirring blade of this utility model;

[0030] Figure 3 This is a top view of the stirring blade of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the tool holder of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the grinding cup assembly of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the coffee grinder of this utility model;

[0034] Figure 7 This is a graph showing the relationship between the tilt angle α and the stirring efficiency η% obtained from actual measurements of this invention.

[0035] Figure 8 This is a graph showing the relationship between the radius R of the arc-shaped structure and the stirring efficiency η%, obtained through actual measurements of this invention.

[0036] Explanation of reference numerals in the attached drawings: 100, stirring blade; 101, mounting part; 102, blade wing; 103, blade edge; 1021, bending part; 1022, horizontal part; 1023, tail part; 200, cup body; 300, blade holder; 400, main unit. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] Reference Figure 1-7 This invention describes a stirring blade, a grinding cup assembly, and a coffee grinder according to embodiments of the present invention.

[0040] In one embodiment, such as Figure 1-2 and Figure 6-7 As shown, a stirring blade 100 is provided on the cutting side of the stirring blade 100, and the cutting edge 103 is a concave arc-shaped structure.

[0041] The stirring blade 100 includes a mounting portion 101 for fixed connection with a rotating shaft and at least two blades 102 extending outward from the periphery of the mounting portion 101. The tail portion 1023 of the blades 102 is inclined in the Z direction and bent upward.

[0042] In this design, the extension direction of the blade 102 is taken as the X direction, the axis direction of the rotating shaft is taken as the Y direction, and the Z direction is perpendicular to the horizontal plane formed by the X and Y directions.

[0043] Specifically, the rotating shaft is vertically arranged, the mounting part 101 is horizontally arranged, and a mounting hole for fixed connection with the rotating shaft is opened at the center of the mounting part 101; at least two blades 102 can be symmetrically distributed around the mounting hole, or they can be evenly distributed around the periphery of the mounting part 101, which is not limited in this embodiment.

[0044] In practice, the cutting edge 103 may be provided only on the cutting side of the blade 102, or it may be formed by the mounting part 101 and the cutting side of the blade 102 together.

[0045] The mixing blade 100 provided in this embodiment adopts a concave arc-shaped blade edge 103, which enables the dry ingredients to move closer to and gather towards the center of the grinding cup cavity under the action of its concave arc structure during the mixing process, thereby increasing the frequency of the ingredients being cut, and thus improving the grinding efficiency and grinding effect.

[0046] In this embodiment, the blade 102 includes a bent portion 1021, a horizontal portion 1022, and a tail portion 1023 connected in sequence. The bent portion 1021 is bent downward and connected to the edge of the mounting portion 101. The horizontal portion 1022 is parallel to the mounting portion 101. The tail portion 1023 is inclined in the Z direction and bent upward and connected to the outside of the horizontal portion 1022.

[0047] Specifically, the blade of the stirring blade 100 extends a certain length from the central pivot to both ends (forming the mounting portion 101), then bends downward at a certain angle (forming the bending portion 1021), then bends horizontally and extends for a certain length (forming the horizontal portion 1022), then tilts at an angle α in the Z direction, and bends upward at a certain angle (forming the tail portion 1023); wherein, 20°≦α≦40°.

[0048] In the above embodiment, the blade 102 is composed of a concave structure consisting of a bent part 1021, a horizontal part 1022 and a tail part 1023 connected in sequence, which provides a certain support for the food and helps to improve the stirring efficiency and effect.

[0049] In this embodiment, the tail 1023 of the blade 102 is tilted in the Z direction at an angle of 20° to 40°, which makes it easier for the ingredients to gather towards the stirring center.

[0050] In specific implementation, the tilt angle of the tail section 1023 bending in the Z direction is α, where α is 20° to 40°, as determined by actual measurement. Figure 7 The relationship between the tilt angle α of the tail 1023 in the Z direction and the stirring efficiency η% is shown. It can be seen that when α is approximately in the range of 27° to 37°, the stirring efficiency η% is at a high level, and α is preferably 30°.

[0051] In this embodiment, the angle between the bent portion 1021 and the Y direction is 25° to 45°, resulting in a simple structure and convenient processing. Specifically, the bent portion 1021 forms a certain angle with the Y direction to constitute one end of the concave structure of the blade wing 102. In a specific implementation, the angle between the bent portion 1021 and the Y direction is defined as a first angle β1, with a value ranging from 25° to 45°, preferably 35°.

[0052] In this embodiment, the angle between the tail portion 1023 and the Y direction is 30° to 50°, resulting in a simple structure that is easy to manufacture. Specifically, the tail portion 1023 forms a certain angle with the Y direction to constitute the other end of the concave structure of the blade wing 102. In a specific implementation, the angle between the tail portion 1023 and the Y direction is a second angle β2, which is 30° to 50°, preferably 40°.

[0053] In one embodiment of the above-described embodiments, the stirring blade 100 may be set with a first angle β1 of 35° and a second angle β2 of 40° to achieve a better pulverizing effect.

[0054] In one embodiment of this invention, only the cutting side of the blade 102 is provided with a cutting edge 103 to facilitate machining. In this case, the mounting part 101 is only used for fixed connection with the rotating shaft and is not responsible for cutting. The cutting is completely achieved by the blade 102.

[0055] In another embodiment of this invention, the mounting part 101 and the cutting side of the blade wing 102 are provided with a blade edge 103. The blade edge 103 is longer, that is, it has a longer cutting length, which can achieve better crushing efficiency and effect.

[0056] In this embodiment, the radius of the arc structure of the blade edge 103 is 15mm to 55mm.

[0057] Specifically, the radius of the arc-shaped structure of the blade edge 103 is defined as R, and the range of R is: 15mm≦R≦55mm.

[0058] In practice, the results were obtained through actual measurements. Figure 8 It can be seen that the optimal range of the radius R of the arc structure of the blade edge 103 is 33mm to 47mm. At this time, the stirring efficiency η% is in a high state, and R is preferably 35mm.

[0059] In this embodiment, the stirring blade 100 is a one-piece molded structure, which has better stability and durability.

[0060] In the above embodiments, the working principle of the stirring blade 100 is as follows: The blade edge 103 of the stirring blade 100 adopts a concave arc-shaped structure. This structure helps to improve the operating mode of dried food during the stirring process. That is, when the stirring blade 100 is making a circular cutting motion, the food interacts with the blade edge 103 of the concave arc-shaped structure. Due to the mechanical principle, a normal force pointing towards the center of the blade edge 103 is formed. As the food is being cut by the stirring blade 100, due to the action of the normal force, the food particles will concentrate in the central area of ​​the inner cavity of the processing container, thereby increasing the cutting frequency of the food and thus improving the crushing efficiency and crushing effect.

[0061] In another embodiment, the present invention provides a coffee grinder assembly, which includes a cup body 200, a blade holder 300, and a stirring blade 100 as described in any of the above embodiments, the stirring blade 100 being mounted on the blade holder 300.

[0062] Specifically, the stirring blade 100 is mounted on the blade holder 300 via a rotating shaft. When the rotating shaft rotates, it drives the stirring blade 100 to rotate and work. The cup body 200 is inverted on the blade holder 300 as a grinding container.

[0063] The aforementioned grinding cup assembly uses a stirring blade 100 with a concave arc-shaped blade edge 103, which helps dry ingredients to gather and concentrate towards the center of the inner cavity of the cup body 200 during the stirring process, thereby increasing the frequency of cutting the ingredients and thus improving the grinding efficiency and grinding effect.

[0064] In yet another embodiment, the present invention provides a coffee grinder, including a main unit 400 and a grinding cup assembly as described in any of the above embodiments, the grinding cup assembly being mounted on the main unit 400.

[0065] The main unit 400 may be equipped with a motor, and the blade holder 300 of the grinding cup assembly is equipped with a rotating shaft that drives the stirring blade 100 to rotate. After the main unit 400 is started, the motor drives the rotating shaft to drive the stirring blade 100 to rotate and work, so that the dry ingredients can be crushed in the cup body 200.

[0066] The above-mentioned grinder can be used to grind dry ingredients such as coffee beans and almonds. The use of the above-mentioned stirring blade 100 can improve the movement pattern of the ingredients and improve the grinding efficiency and grinding effect.

[0067] The mixing blade, grinding cup assembly, and other components and operation of the coffee grinder according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0068] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.

[0069] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0070] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. A stirring blade (100), characterized in that: The cutting side of the stirring blade (100) is provided with a cutting edge (103), and the cutting edge (103) is a concave arc-shaped structure; The stirring blade (100) includes a mounting portion (101) for fixed connection with a rotating shaft and at least two blade wings (102) extending outward from the periphery of the mounting portion (101), the tail portion (1023) of the blade wings (102) being inclined in the Z direction and bent upward; Wherein, the extension direction of the blade (102) is the X direction, the axial direction of the rotating shaft is the Y direction, and the Z direction is perpendicular to the horizontal plane formed by the X and Y directions.

2. The stirring blade (100) according to claim 1, characterized in that: The blade (102) includes a bent portion (1021), a horizontal portion (1022), and a tail portion (1023) connected in sequence. The bent portion (1021) bends downward and connects to the edge of the mounting portion (101). The horizontal portion (1022) is parallel to the mounting portion (101). The tail portion (1023) is inclined in the Z direction and bends upward and connects to the outside of the horizontal portion (1022).

3. The stirring blade (100) according to claim 1, characterized in that: The tail (1023) of the blade (102) is tilted in the Z direction at an angle of 20° to 40°.

4. The stirring blade (100) according to claim 2, characterized in that: The angle between the bent portion (1021) and the Y direction is 25° to 45°.

5. The stirring blade (100) according to claim 2, characterized in that: The angle between the tail (1023) and the Y direction is 30° to 50°.

6. The stirring blade (100) according to claim 1, characterized in that: The blade edge (103) is provided only on the cutting side of the blade wing (102), or the blade edge (103) is provided on both the mounting part (101) and the cutting side of the blade wing (102).

7. The stirring blade (100) according to any one of claims 1 to 6, characterized in that: The radius of the arc structure of the blade edge (103) is 15mm to 55mm.

8. The stirring blade (100) according to claim 1, characterized in that: The stirring blade (100) is a one-piece molded structure.

9. A coffee grinder assembly, characterized in that: It includes a cup body (200), a blade holder (300), and a stirring blade (100) as described in any one of claims 1 to 8, the stirring blade (100) being mounted on the blade holder (300).

10. A coffee grinder, characterized in that: It includes a main unit (400) and the grinding cup assembly as described in claim 9, the grinding cup assembly being mounted on the main unit (400).

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