Bean grinding device of coffee machine

Abstract

The utility model discloses a coffee machine bean grinding device which comprises an inner grinding wheel assembly, an outer grinding wheel assembly, a base and a driving assembly, the driving assembly is arranged on the lower portion of the base, and the inner grinding wheel assembly and the outer grinding wheel assembly are arranged on the upper portion of the base. The inner grinding wheel assembly is connected with the output end of the driving assembly and is driven by the driving assembly to be matched with the outer grinding wheel assembly to complete grinding of coffee beans, and a first clamping structure rotating horizontally is arranged between the base and the outer grinding wheel assembly so that the outer grinding wheel assembly can be connected with the base and can rotate horizontally relative to the base. According to the grinding device, the horizontally rotating first clamping structure is arranged between the base and the outer grinding wheel assembly of the grinding device, the first clamping structure is mainly a bayonet or a buckle capable of being quickly disassembled, the outer grinding wheel assembly and the base can be conveniently and quickly disassembled and assembled, meanwhile, the first clamping structure can enable the outer grinding wheel assembly to horizontally rotate relative to the base, and the outer grinding wheel assembly can be conveniently and quickly disassembled and assembled. The grinding gap can be adjusted by rotating the outer grinding wheel assembly, and coffee powder of different thicknesses can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a coffee machine bean grinding device. Background Art

[0002] The grinder in a coffee machine is one of the machine's core components, used to grind coffee beans into the ground coffee needed for brewing. Generally speaking, the coarseness of the ground coffee produced by the grinder will result in varying brewed coffee flavors. However, the cleanliness of the grinder itself is also crucial for maintaining the taste and quality of your coffee. This is because during use, oils and fines from the coffee beans can remain on the grinding disc and inside the machine, affecting the freshness and taste of your coffee, resulting in an impure flavor. To maintain the cleanliness of the grinder, perform a basic cleaning after each use and a deep cleaning regularly. Deep cleaning generally requires disassembling grinder components, such as the grinding wheel. This helps to thoroughly remove residual coffee grounds and oils, ensuring optimal grinder performance and coffee quality.

[0003] In order to improve the convenience and cleaning effect of the bean grinding device, many technical improvements have been made to the bean grinding device in terms of easy disassembly. For example, a modular design allows users to easily disassemble and replace the bean grinding component; it is equipped with a quick-release interface or buckle to facilitate the rapid installation and removal of the bean grinding device with the outside and inside; and the grinding device is fixed with simple screws or knobs.

[0004] Currently, the grinding wheel assembly in the bean grinding device is still fixed with screws and installed on the bean grinding device. Additional tools are required for disassembly and cleaning, which makes disassembly of the bean grinding device inconvenient and affects the cleaning effect. Utility Model Content

[0005] The purpose of the utility model is to provide a coffee machine grinding device, which solves the problem in the prior art that the grinding wheel assembly in the bean grinding device is still fixed by screws and installed on the bean grinding device. When disassembling and cleaning, additional tools are needed, which makes it inconvenient to disassemble the bean grinding device and affects the cleaning effect, so as to overcome the shortcomings of the prior art.

[0006] The utility model provides a coffee machine bean grinding device through the following technical scheme, including an inner grinding wheel assembly, an outer grinding wheel assembly, a base and a driving assembly, wherein the driving assembly is arranged at the lower part of the base, the inner grinding wheel assembly and the outer grinding wheel assembly are arranged at the upper part of the base, the inner grinding wheel assembly is connected to the output end of the driving assembly and cooperates with the outer grinding wheel assembly to complete the grinding of coffee beans under the drive of the driving assembly, and a first horizontally rotating clamping structure is provided between the base and the outer grinding wheel assembly, so that the outer grinding wheel assembly is connected to the base and can rotate horizontally relative to the base.

[0007] Furthermore, the outer grinding wheel assembly includes an upper wheel seat, an outer grinding wheel, a lower wheel seat and a connecting ring connected in sequence from top to bottom, and the first clamping structure includes an annular groove arranged on the outer wall of the connecting ring and a plurality of first clamping claws arranged on the outer edge of the upper part of the base. The plurality of first clamping claws are clamped with the annular groove to connect the outer grinding wheel assembly to the base, and the plurality of first clamping claws move in the annular groove to enable the outer grinding wheel assembly to rotate horizontally relative to the base.

[0008] Furthermore, a sinking cavity is provided on the upper part of the base, and a first convex edge extending upward is provided at the opening of the sinking cavity. The connecting ring is sleeved on the first convex edge. The first clamping structure also includes an annular rib provided on the inner wall of the connecting ring and a plurality of second claws provided on the outer wall of the first convex edge. The plurality of second claws abut against the annular rib up and down to connect the outer grinding wheel assembly to the base. The plurality of second claws move on the annular rib to enable the outer grinding wheel assembly to rotate horizontally relative to the base.

[0009] Furthermore, the outer grinding wheel includes a cylindrical wheel body, and a second protrusion extending horizontally outward is provided at the upper opening of the wheel body, the inner wall of the upper wheel seat is provided with a first step, and the top of the lower wheel seat is provided with a second step. When the upper wheel seat, the outer grinding wheel, and the lower wheel seat are sequentially socketed, the upper surface of the second protrusion abuts against the lower edge of the first step, and the lower surface of the second protrusion abuts against the upper edge of the second step to limit the movement of the outer grinding wheel.

[0010] Furthermore, the upper part of the upper wheel seat is provided with a claw seat extending downward along the outer wall, the lower part of the claw seat has an opening, the upper part of the upper wheel seat is provided with a third clamping hole corresponding to the claw seat, and the outer wall of the lower wheel seat is provided with a third clamping claw extending upward, and the third clamping claw is clamped into the third clamping hole to realize the fixation of the upper wheel seat, the outer grinding wheel and the lower wheel seat after being sequentially socketed.

[0011] Furthermore, the side wall of the second convex edge is also provided with a first notch, and the inner wall of the upper wheel seat below the first step is provided with a protrusion corresponding to the notch. After the upper wheel seat, the outer grinding wheel and the lower wheel seat are sequentially socketed, the protrusion cooperates with the notch to limit the rotation of the outer grinding wheel.

[0012] Furthermore, the first convex edge is provided with a second notch which cooperates with the claw seat. When the outer grinding wheel assembly is connected to the base, the claw seat cooperates with the second notch to limit the outer grinding wheel from rotating relative to the base.

[0013] Furthermore, the outer wall of the upper wheel seat is provided with a horizontally extending first protruding tooth, and the inner wall of the connecting ring is provided with an internal thread. The first protruding tooth is screwed into the internal thread to connect the upper wheel seat, the outer grinding wheel, the lower wheel seat and the connecting ring. The connecting ring is rotated to move the first protruding tooth along the internal thread to achieve the raising or lowering of the outer grinding wheel.

[0014] Furthermore, a second protruding tooth is circumferentially provided on the upper outer wall of the connecting ring, a third step is provided between the second protruding tooth and the annular groove, a positioning ring is provided on the lower surface of the third step, a positioning groove is provided on the lower surface of the positioning ring, and a positioning bead is provided on the upper part of the base, and the positioning bead cooperates with the positioning groove to realize the horizontal rotation positioning of the outer grinding wheel assembly relative to the base.

[0015] Furthermore, the upper surface of the positioning ring is provided with a fourth clamping claw, and the third step is provided with a fourth clamping hole that cooperates with the fourth clamping claw. The fourth clamping claw is clamped into the fourth clamping hole to achieve the connection and fixation of the positioning ring and the connecting ring.

[0016] The utility model has the following beneficial effects: a first clamping structure that rotates horizontally is provided between the base of the grinding device and the outer grinding wheel assembly, and the first clamping structure is mainly a quick-detachable bayonet or buckle, which can realize convenient and quick disassembly and assembly of the outer grinding wheel assembly and the base. At the same time, the first clamping structure can also enable the outer grinding wheel assembly to rotate horizontally relative to the base. The grinding gap can be adjusted by rotating the outer grinding wheel assembly to obtain coffee powder of different coarseness and fineness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall schematic diagram of a coffee machine bean grinding device according to the present invention.

[0018] Figure 2 This is a schematic diagram of an explosion of a coffee machine bean grinding device according to the present invention.

[0019] Figure 3 This is a schematic diagram of the upper structure of the upper wheel seat, outer grinding wheel and lower wheel seat of the coffee machine grinding device described in the utility model.

[0020] Figure 4 This is a schematic diagram of the bottom structure of the upper wheel seat, outer grinding wheel and lower wheel seat of the coffee machine grinding device described in the utility model.

[0021] Figure 5 This is a schematic diagram of the upper structure of the connecting ring, positioning ring and base of the coffee machine grinding device described in the utility model.

[0022] Figure 6 This is a schematic diagram of the bottom structure of the connecting ring and the positioning ring of the coffee machine grinding device described in the utility model.

[0023] Figure 7 This is a schematic vertical cross-sectional view of the bean grinding device of a coffee machine according to the present invention.

[0024] in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names is as follows:

[0025] 1 inner grinding wheel assembly, 2 outer grinding wheel assembly, 3 base, 4 drive assembly, 21 upper wheel seat, 22 outer grinding wheel, 23 lower wheel seat, 24 connecting ring, 25 positioning ring, 32 positioning bead, 211 first step, 212 claw seat, 213 third clamping hole, 214 first convex tooth, 215 protrusion, 221 wheel body, 222 second convex edge, 223 first notch, 231 second step, 232 third clamping claw, 241 annular groove, 242 annular convex rib, 243 internal thread, 244 second convex tooth, 245 third step, 246 fourth clamping hole, 251 positioning groove, 252 fourth clamping claw, 311 first clamping claw, 312 first convex edge, 313 second clamping claw, 314 second notch. DETAILED DESCRIPTION

[0026] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0027] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0028] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0031] Refer to the following Figure 1-7 A coffee machine bean grinding device according to some embodiments of the present application is described.

[0032] The utility model provides a coffee machine bean grinding device through the following technical scheme, including an inner grinding wheel assembly 1, an outer grinding wheel assembly 2, a base 3 and a driving assembly 4, wherein the driving assembly 4 is arranged at the lower part of the base 3, and the inner grinding wheel assembly 1 and the outer grinding wheel assembly 2 are arranged at the upper part of the base 3. The inner grinding wheel assembly 1 is connected to the output end of the driving assembly 4 and cooperates with the outer grinding wheel assembly 2 to complete the grinding of coffee beans under the drive of the driving assembly 4.

[0033] In the technical solution of this embodiment, the outer grinding wheel assembly includes an upper wheel seat 21, an outer grinding wheel 22, a lower wheel seat 23, and a connecting ring 24, which are sequentially connected from top to bottom. The upper wheel seat 21, outer grinding wheel 22, and lower wheel seat 23 are sequentially connected to form a modular outer grinding wheel unit, which is then connected to the connecting ring 24 to form the outer grinding wheel assembly 2. This modular design not only achieves the function of grinding beans, but also allows for convenient cleaning of each component after disassembly.

[0034] Specifically, the outer grinding wheel 22 includes a cylindrical wheel body 221, and a second flange 222 extending horizontally outward is provided at the upper opening of the wheel body 221. The inner wall of the upper wheel seat 21 is provided with a first step 211, and the top of the lower wheel seat 23 is provided with a second step 231. When the upper wheel seat 21, the outer grinding wheel 22, and the lower wheel seat 23 are sequentially socketed, the upper surface of the second flange 222 abuts against the lower edge of the first step 211, and the lower surface of the second flange 222 abuts against the upper edge of the second step 231, thereby limiting the movement of the outer grinding wheel 22 in the up and down and left and right directions between the upper wheel seat 21 and the lower wheel seat 23.

[0035] A first notch 223 is provided on the side wall of the second convex edge 222, and a protrusion 215 corresponding to the first notch 223 is provided on the inner wall of the upper wheel seat 21 below the first step 211. When the upper wheel seat 21, the outer grinding wheel 22 and the lower wheel seat 23 are sequentially socketed, the protrusion 215 and the notch 223 abut and cooperate with each other, thereby limiting the rotation of the outer grinding wheel 22 between the upper wheel seat 21 and the lower wheel seat 23.

[0036] The upper part of the upper wheel seat 21 is provided with a claw seat 212 extending downward along the outer wall, and the lower part of the claw seat 212 has an opening. The upper part of the upper wheel seat 21 is provided with a third clamping hole 213 corresponding to the claw seat 212, and the outer wall of the lower wheel seat 23 is provided with a third clamping claw 232 extending upward. When the upper wheel seat 21, the outer grinding wheel 22, and the lower wheel seat 23 are sequentially socketed, the third clamping claw 232 is inserted upward into the claw seat 212 from the opening at the lower part of the claw seat 212, passes through and is clamped in the third clamping hole 213, thereby realizing the fixation of the upper wheel seat 21, the outer grinding wheel 22, and the lower wheel seat 23 after being sequentially socketed.

[0037] In this way, the upper wheel seat 21 , the outer grinding wheel 22 , and the lower wheel seat 23 are sequentially sleeved to form an integrated whole, and the outer grinding wheel 22 is also fixed in all directions between the upper wheel seat 21 and the lower wheel seat 23 .

[0038] In addition, a horizontally extending first protruding tooth 214 is provided on the outer wall of the upper wheel seat 21, and an internal thread 243 is provided on the inner wall of the connecting ring 24. After the first protruding tooth 214 is screwed into the internal thread 243, the upper wheel seat 21, the outer grinding wheel 22, and the lower wheel seat 23 that have been connected to each other can be connected to the connecting ring 24. By rotating the connecting ring 24 to move the first protruding tooth 214 along the internal thread 243, the upper wheel seat 21 and the outer grinding wheel 22 can be driven to rise or fall, thereby changing the grinding gap between the inner grinding wheel assembly 1 and the outer grinding wheel assembly 2, and realizing the adjustment of the coarseness of the coffee powder grinding.

[0039] In the technical solution of this embodiment, a first horizontally rotatable clamping structure is provided between the base 3 and the outer grinding wheel assembly 2 so that the outer grinding wheel assembly 2 is connected to the base 3 and can rotate horizontally relative to the base 3 .

[0040] Specifically, the first clamping structure includes an annular groove 241 arranged on the outer wall of the connecting ring 24 and a plurality of first clamping claws 311 arranged on the upper outer edge of the base 3. After the first clamping claw 311 is clamped into the annular groove 241, the connection between the outer grinding wheel assembly 2 and the base 3 on the outer side is realized. At the same time, the first clamping claw 311 can move in the annular groove 241, so that the outer grinding wheel assembly 2 can rotate horizontally relative to the base 3.

[0041] In addition, a sinking cavity 31 is provided on the upper part of the base 3, and a first ridge 312 extending upward is provided at the opening of the sinking cavity 31. When the connecting ring 24 is mounted on the first ridge 312, a plurality of second claws 313 provided on the outer wall of the first ridge 312 are clamped into and abutted against the annular ridge 242 on the inner wall of the connecting ring 24, thereby realizing the connection between the outer grinding wheel assembly 2 and the base 3 on the inner side; at the same time, the second claws 313 can move on the annular ridge 242, so that the outer grinding wheel assembly 2 can rotate horizontally relative to the base 3.

[0042] A second notch 314 is provided on the first ridge 312 to match the claw seat 212 . When the outer grinding wheel assembly 1 is connected to the base 3 , the claw seat 212 is inserted into the second notch 314 , and the outer grinding wheel 22 will not rotate synchronously due to the drive of the adapter ring 24 .

[0043] The first engaging structure is primarily a quick-release bayonet or buckle, enabling convenient and quick assembly and disassembly of the outer grinding wheel assembly 2 and the base 3. Furthermore, the first engaging structure also allows the outer grinding wheel assembly 2 to rotate horizontally relative to the base 3. This eliminates the inconvenience of requiring additional tools to disassemble the outer grinding wheel assembly 2 when screws are used. Furthermore, horizontal rotation of the connecting ring 24 directly raises and lowers the outer grinding wheel 22, thereby coordinating with the rotating inner grinding wheel assembly 1 to grind coffee beans at different grinding gaps.

[0044] In order to better adjust the grinding gap by the rotation of the connecting ring 24, a second protruding tooth 244 is provided on the circumference of the upper outer wall of the connecting ring 24. The second protruding tooth 244 is connected to an external manual or automatic adjustment device, and the rotation of the connecting ring 24 is driven by the external adjustment device.

[0045] A third step 245 is provided between the second protruding tooth 244 and the annular groove 241. A positioning ring 25 is provided on the lower surface of the third step 245. A fourth claw 252 is provided on the upper surface of the positioning ring 25. The third step 245 is provided with a fourth clamping hole 246 that cooperates with the fourth clamping claw 252. The fourth clamping claw 252 is inserted into the fourth clamping hole 246 to connect and fix the positioning ring 25 to the connecting ring 24.

[0046] The lower surface of the positioning ring 25 is provided with a positioning groove 251, which consists of a plurality of continuous hemispherical grooves. A positioning bead 32 is fixed to the base 3. The positioning bead 32 has an elastic structure that can retract when compressed and extend under elastic force. When the connecting ring 24 is rotated, the positioning bead 32 moves and stops in different grooves of the positioning groove 251, increasing the rotational resistance of the connecting ring 24 and achieving the rotational positioning of the connecting ring 24. This prevents the grinding gap from being changed by accidentally touching the connecting ring 24 after the grinding gap is adjusted by rotating the connecting ring 24.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coffee machine bean grinding device, comprising an inner grinding wheel assembly, an outer grinding wheel assembly, a base and a drive assembly, characterized in that: The driving assembly is arranged at the lower part of the base, and the inner grinding wheel assembly and the outer grinding wheel assembly are arranged at the upper part of the base. The inner grinding wheel assembly is connected to the output end of the driving assembly and cooperates with the outer grinding wheel assembly to complete the grinding of coffee beans under the drive of the driving assembly. A first horizontally rotating clamping structure is provided between the base and the outer grinding wheel assembly, so that the outer grinding wheel assembly is connected to the base and can rotate horizontally relative to the base.

2. A coffee bean grinding device according to claim 1, characterized in that: The outer grinding wheel assembly includes an upper wheel seat, an outer grinding wheel, a lower wheel seat and a connecting ring connected in sequence from top to bottom. The first clamping structure includes an annular groove arranged on the outer wall of the connecting ring and a plurality of first clamping claws arranged on the outer edge of the upper part of the base. The plurality of first clamping claws are clamped with the annular groove to connect the outer grinding wheel assembly to the base. The plurality of first clamping claws move in the annular groove to enable the outer grinding wheel assembly to rotate horizontally relative to the base.

3. The coffee bean grinding device according to claim 2, characterized in that: A sinking cavity is provided on the upper part of the base, and a first convex edge extending upward is provided at the opening of the sinking cavity. The connecting ring is sleeved on the first convex edge. The first clamping structure also includes an annular rib provided on the inner wall of the connecting ring and a plurality of second claws provided on the outer wall of the first convex edge. The plurality of second claws abut against the annular rib up and down to connect the outer grinding wheel assembly to the base. The plurality of second claws move on the annular rib to enable the outer grinding wheel assembly to rotate horizontally relative to the base.

4. The coffee bean grinding device according to claim 3, characterized in that: The outer grinding wheel includes a cylindrical wheel body, and a second convex edge extending horizontally outward is provided at the upper opening of the wheel body. The inner wall of the upper wheel seat is provided with a first step, and the top of the lower wheel seat is provided with a second step. When the upper wheel seat, the outer grinding wheel and the lower wheel seat are sequentially socketed, the upper surface of the second convex edge abuts against the lower edge of the first step, and the lower surface of the second convex edge abuts against the upper edge of the second step to limit the movement of the outer grinding wheel.

5. The coffee bean grinding device of claim 4, characterized in that: The upper part of the upper wheel seat is provided with a claw seat extending downward along the outer wall, the lower part of the claw seat has an opening, the upper part of the upper wheel seat is provided with a third clamping hole corresponding to the claw seat, the outer wall of the lower wheel seat is provided with a third clamping claw extending upward, and the third clamping claw is engaged with the third clamping hole to realize the fixation of the upper wheel seat, the outer grinding wheel and the lower wheel seat after being sequentially socketed.

6. The coffee bean grinding device of claim 5, characterized in that: The side wall of the second convex edge is also provided with a first notch, and the inner wall of the upper wheel seat below the first step is provided with a protrusion corresponding to the notch. After the upper wheel seat, the outer grinding wheel and the lower wheel seat are sequentially socketed, the protrusion cooperates with the notch to limit the rotation of the outer grinding wheel.

7. The coffee bean grinding device of claim 6, wherein: The first convex edge is provided with a second notch which cooperates with the claw seat. When the outer grinding wheel assembly is connected to the base, the claw seat cooperates with the second notch to limit the outer grinding wheel from rotating relative to the base.

8. The coffee bean grinding device of claim 7, characterized in that: The outer wall of the upper wheel seat is provided with a horizontally extending first protruding tooth, and the inner wall of the connecting ring is provided with an internal thread. The first protruding tooth is screwed into the internal thread to connect the upper wheel seat, the outer grinding wheel, the lower wheel seat and the connecting ring. The connecting ring is rotated to move the first protruding tooth along the internal thread to achieve the raising or lowering of the outer grinding wheel.

9. The coffee bean grinding device of claim 8, characterized in that: A second protruding tooth is circumferentially provided on the upper outer wall of the connecting ring, a third step is provided between the second protruding tooth and the annular groove, a positioning ring is provided on the lower surface of the third step, a positioning groove is provided on the lower surface of the positioning ring, and a positioning bead is provided on the upper part of the base, and the positioning bead cooperates with the positioning groove to realize the horizontal rotation positioning of the outer grinding wheel assembly relative to the base.

10. The coffee bean grinding device of claim 9, characterized in that: A fourth clamping claw is provided on the upper surface of the positioning ring, and a fourth clamping hole is provided on the third step to match the fourth clamping claw. The fourth clamping claw is engaged with the fourth clamping hole to achieve the connection and fixation between the positioning ring and the connecting ring.

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