A portable coffee grinder with greater flexibility of use

Abstract

The utility model discloses a portable bean grinder that is higher in flexibility of use, which comprises a main body, a bean bin box and a base convenient to place, a driver and a grinding cavity are arranged in the main body, the bean bin box is in communication with the grinding cavity, the driver is drivingly connected with a grinding core, the grinding core is located in the grinding cavity, the bean bin box is connected to the top of the main body, and the bean bin box, the grinding cavity and the driver are sequentially arranged from top to bottom, a powder outlet pipe extends from the side of the main body, the powder outlet pipe is downwardly directed and has the other end in communication with the grinding cavity, the portable bean grinder further comprises a detachable battery, the battery is at least partially located below the driver and the powder outlet pipe, and a battery port for mounting or dismounting the battery is arranged on the lower half of the main body or the base. The utility model has the advantages of greatly increasing the flexibility of use of the product while maintaining the original structure.

Description

[Technical Field]

[0001] This utility model relates to the field of coffee grinders, and in particular to a portable coffee grinder with greater flexibility of use. [Background Technology]

[0002] As people's living standards improve, products such as coffee grinders and coffee machines are becoming increasingly popular, and the types and specifications of these products are becoming more and more refined. At the same time, with the changing pace of life, the usage scenarios and environments of these products are also changing. Consumers are no longer satisfied with traditional stationary coffee grinders or coffee machines and are beginning to prefer more portable ones, allowing them to enjoy freshly ground coffee in their cars, outdoors, and other settings.

[0003] For portable coffee grinders, the main structure still retains the main functions of traditional coffee grinders, including the grinding chamber, drive, whisk, and bean hopper. The main innovation is the addition of a built-in battery to meet the needs of portable use.

[0004] However, these traditional portable coffee grinders are starting to encounter some new problems when used at present, especially the battery issue. As a consumable component, the battery capacity will decrease after long-term use, which will limit the working time in the later stages. Secondly, especially when outdoors or traveling, charging is inconvenient. Once the battery is used up, it cannot be used anymore, which greatly reduces the flexibility of use. [Utility Model Content]

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a portable coffee grinder with greater flexibility of use, which greatly increases the flexibility of use of the product while maintaining the original structure as much as possible.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A more flexible portable coffee grinder includes a main body, a coffee hopper, and a convenient base. The main body contains a drive unit and a grinding chamber. The coffee hopper is connected to the grinding chamber. The drive unit is driven to a grinding wheel located inside the grinding chamber. The coffee hopper is connected to the top of the main body. From top to bottom, the components are the coffee hopper, grinding chamber, and drive unit. A powder outlet tube extends from the side of the main body. The outlet of the powder outlet tube faces downward and its other end is connected to the grinding chamber. The portable coffee grinder also includes a removable battery. The battery is at least partially located below the drive unit and the powder outlet tube. The lower half of the main body or the base has a battery port for installing or removing the battery.

[0008] The beneficial effects of using this utility model are as follows:

[0009] Firstly, in this portable coffee grinder, the bean hopper is located at the top of the main body, which is also equipped with a powder outlet tube. Coffee beans and other food enter the grinding chamber from the top bean hopper and then fall through the powder outlet tube. Due to its structural characteristics, this type of portable coffee grinder needs to have a certain height to provide sufficient space to place a powder receiving container below the powder outlet tube. Therefore, the main structure of this type of portable coffee grinder is usually concentrated in the upper half of the main body. This invention makes good use of the characteristics of the original structure by installing a removable battery in the lower half of the main body, minimizing or eliminating the need for modifications to the upper half of the main body. This avoids significant changes to the original product structure and molds, thereby reducing overall production costs for enterprises.

[0010] Secondly, this design also addresses the shortcomings of the original structure. Because the main structure of the original product was concentrated in the upper half, the overall center of gravity was slightly unstable. Since the battery itself also has weight, placing the removable battery in the lower half of the main body makes the center of gravity more balanced, resulting in better stability during use. Therefore, after selecting and testing multiple options, for portable coffee grinders with a top-mounted bean hopper and a powder outlet, placing the removable battery in the lower half of the main body is the best option.

[0011] Finally, the removable battery in this invention greatly increases the product's flexibility, allowing for backup battery switching: in outdoor camping, travel, and other scenarios, multiple fully charged batteries can be carried to avoid interrupting grinding due to insufficient power; it also extends the overall lifespan of the portable coffee grinder. As a consumable component, the battery's capacity decreases with prolonged use, but this removable design allows users to replace the battery themselves, eliminating the need to scrap the entire machine due to battery aging, significantly extending the overall lifespan of the portable coffee grinder. From an environmental perspective, it can reduce electronic waste to some extent, as replacing the battery instead of discarding the entire machine aligns with the concept of a circular economy, and users can more easily dispose of used batteries in an environmentally friendly manner. It is particularly suitable for coffee enthusiasts who value equipment durability, frequently need to use it on the go, or have high requirements for battery life.

[0012] Preferably, the battery port is located on the bottom surface of the base or the side of the main body, and the entire battery is located below the driver and the powder outlet tube.

[0013] Preferably, the horizontal projected area of ​​the base is larger than the horizontal projected area of ​​the main body, and the area ratio is greater than or equal to 1.3, and the battery is located at the connection position where the base and the main body intersect.

[0014] Preferably, the driver includes a drive motor, the rotation axis of which is inclined to the base, and the center of gravity of the battery and the center of gravity of the bean hopper are located on two different sides of the center of gravity of the drive motor.

[0015] Preferably, the base extends away from the battery to form an extension, which is located below the powder outlet tube. The extension has a control key and a PCB circuit board inside it, which is connected to the control key and the battery respectively.

[0016] Preferably, the main body and / or base are provided with an independent battery compartment, and a battery cover is provided at the battery port. The battery cover and the battery compartment form a separate chamber for accommodating the battery.

[0017] Preferably, the main body has an open opening at the top, and the bean hopper box is detachably connected to the open opening.

[0018] Preferably, the grinding chamber is provided with a grinding disc, which is sleeved on the outer periphery of the grinding core. A grinding gap is formed between the inner wall of the grinding disc and the outer wall of the grinding core. The grinding disc is detachably connected to the grinding chamber and can be installed or removed through the opening.

[0019] Preferably, the main body is provided with a grinding disc fixing seat, which is fixedly connected to the grinding disc or is an integral structure, and the grinding disc fixing seat is detachably connected to the grinding chamber.

[0020] Preferably, the main body is further provided with an adjusting ring. The adjusting ring and the grinding cavity are connected in such a way that they are mutually limited in the axial direction and can rotate in the circumferential direction. The grinding disc fixing seat or the grinding disc and the grinding cavity are mutually limited in the circumferential direction and can move in the axial direction. The adjusting ring is connected to the grinding disc fixing seat or the grinding disc by a thread. When the adjusting ring rotates, it drives the grinding disc fixing seat or the grinding disc to move axially.

[0021] Preferably, the main body has a side opening on its side and an internal fixing frame inside the main body. The internal fixing frame is used to connect the grinding chamber and / or the driver. One end of the powder outlet pipe is detachably connected to the internal fixing frame, and the other end extends out of the main body through the side opening.

[0022] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0025] Figure 2 This is a front view diagram of Embodiment 1 of the present utility model;

[0026] Figure 3 This is an exploded view of Embodiment 1 of the present invention;

[0027] Figure 4 This is a structural diagram of the internal parts of the main body of Embodiment 1 of this utility model;

[0028] Figure 5 This is a top view of a first embodiment of the present utility model;

[0029] Figure 6 This is a cross-sectional schematic diagram of Embodiment 1 of the present utility model. 【Detailed Implementation Methods】

[0030] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0031] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” that indicate orientation or positional relationship are used only for the convenience of describing the embodiments and simplifying the description, and are not intended to 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 of this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Example 1:

[0035] like Figures 1 to 6 As shown in the figure, this embodiment demonstrates a portable coffee grinder, such as... Figure 1 As shown, the overall structure includes a bean hopper 1, a main body 2, and a base 3 for easy placement. During normal use, the base 3 is usually placed on a relatively flat surface such as a table. The main body 2 is equipped with a driver 4 and a grinding chamber 50. The bean hopper 1 is connected to the grinding chamber 50. The driver 4 is connected to a grinding core 41, which is located inside the grinding chamber 50. The bean hopper 1 is connected to the top of the main body 2. In terms of structural sequence, from top to bottom, the components are the bean hopper 1, the grinding chamber 50, and the driver 4. A powder outlet pipe 21 also extends from the side of the main body 2. The outlet of the powder outlet pipe 21 faces downward and the other end is connected to the grinding chamber 50. During operation, coffee beans and other food in the bean hopper 1 enter the grinding chamber 50 in the main body 2 by gravity. Under the interaction of the grinding core 41 and the grinding chamber 50, the coffee beans and other food are ground into powder and then fall out from the powder outlet pipe 21.

[0036] The portable coffee grinder in this embodiment also includes a removable battery 8, which is at least partially located below the driver 4 and the powder outlet tube 21. A battery port 31 for installing or removing the battery 8 is provided on the lower half of the main body 2 or the base 3. Due to its structural characteristics, this type of portable coffee grinder requires a certain height to provide sufficient space for placing the powder container below the powder outlet tube 21. Therefore, in this type of portable coffee grinder, the main components are usually concentrated in the upper half of the main body 2. However, this embodiment makes good use of the existing structure by placing the removable battery 8 in the lower half of the main body 2, minimizing or eliminating the need for modifications to the upper half of the main body 2. This avoids significant alterations to the original product structure and molds, thus reducing overall production costs for the enterprise.

[0037] Moreover, this design also optimizes the shortcomings of the original structure. Because the main structure of the original product was concentrated in the upper half of the main body 2, the overall center of gravity of the product was slightly unstable. Since the battery 8 itself also has a certain weight, placing the removable battery 8 in the lower half of the main body 2 makes the center of gravity of the main body 2 more balanced, resulting in better stability during product use. Therefore, after selecting and testing multiple options, for this type of portable coffee grinder with the bean hopper 1 on top and a powder outlet tube 21, placing the removable battery 8 in the lower half of the main body 2 is the best option.

[0038] Of course, the removable battery 8 in this embodiment greatly increases the product's flexibility, supporting backup battery switching: in outdoor camping, travel, and other scenarios, multiple fully charged batteries can be carried to avoid interrupting grinding due to insufficient power; it also extends the overall lifespan of the portable coffee grinder. As a consumable component, the battery's capacity decreases with prolonged use, but this removable design allows users to replace the battery themselves, eliminating the need to scrap the entire machine due to battery aging, significantly extending the overall lifespan of the portable coffee grinder. From an environmental perspective, it can reduce electronic waste to some extent, as replacing the battery instead of discarding the entire machine aligns with the concept of a circular economy, and users can more easily dispose of used batteries in an environmentally friendly manner. It is particularly suitable for coffee enthusiasts who value equipment durability, frequently need to use it on the go, or have high requirements for battery life.

[0039] Regarding the location of the battery port 31, it is preferably located on the bottom surface of the base 3 or the side surface of the main body 2. In this embodiment, for example... Figure 1 As shown, the battery port 31 is located on the bottom surface of the base 3. This design minimizes modifications to the main body 2, requiring only changes to the base 3, resulting in low production and modification costs. Figure 6 As can be seen, in order to lower the center of gravity of the battery 8, in this embodiment, the entire battery 8 is located below the driver 4 and the powder outlet pipe 21. In this embodiment, the battery 8 is preferably a rechargeable battery, and the main body 2 or the base 3 is provided with a corresponding charging port.

[0040] Of course, in other embodiments, the location of the battery port 31 is not limited to the base 3. Those skilled in the art can also place the battery port 31 on the side of the main body 2. The advantage of this design is that the battery 8 can be directly removed or installed from the side, which makes it more convenient to take out the battery 8. This embodiment also falls within the protection scope of this utility model.

[0041] In this embodiment, to ensure the portable coffee grinder is placed more stably, the base 3 is designed to be larger than the main body 2; that is, the horizontal projected area of ​​the base 3 is greater than the horizontal projected area of ​​the main body 2. Figure 5As shown in the figure, the horizontal projected area of ​​the main body 2 in this embodiment is the area S1 shown by the dotted line in the figure, and the horizontal projected area of ​​the base 3 is basically the outer contour S2 of the base 3. This makes the base 3 occupy a larger area and more stable when placed. In terms of specific area ratio parameters, it is preferred that S2:S1 is greater than or equal to 1.3.

[0042] The specific location of battery 8, such as Figure 3 or Figure 6 As shown, the battery 8 is located at the junction of the base 3 and the main body 2. Since the battery 8 may have a certain volume or height, and the height of the base 3 needs to be reserved for the powder receiving container, the height space is relatively limited. It is difficult to completely place the battery 8 inside the base 3. Therefore, placing the battery 8 at the junction of the base 3 and the main body 2 does not require changing the height of the base 3, and at the same time, a part of the height of the battery 8 can be accommodated inside the main body 2, making good use of the original structural characteristics.

[0043] Furthermore, regarding the positional relationship between the main body 2 and the base 3, this embodiment preferably features a design where the main body 2 and the base 3 are tilted relative to each other. This design aims to also tilt the grinding chamber 50 relatively, causing the ground soybean powder to gather to one side due to gravity and fall through the powder outlet pipe 21. This results in smoother material flow and reduces soybean powder retention in the grinding chamber 50 to some extent. In this tilted structure, the driver 4 in this embodiment includes a drive motor. The rotation axis of the drive motor is tilted relative to the base 3. The center of gravity of the battery 8 and the center of gravity of the soybean hopper 1 are located on two different sides of the drive motor; these different sides refer to different sides in the horizontal direction. See details... Figure 6 As shown, the center of gravity of battery 8 is Z3, the center of gravity of the drive motor is Z2, and the center of gravity of bean hopper 1 is Z1. Figure 6 As can be seen, the center of gravity Z3 of the battery 8 and the center of gravity Z1 of the bean hopper are located on two different sides of the center of gravity Z2 of the driver 4. This center of gravity layout makes the three main center of gravity positions of the entire portable coffee grinder relatively balanced at the top, middle and bottom, and the product remains relatively stable during normal grinding.

[0044] Regarding the internal structure of base 3, in this embodiment, as follows: Figure 6 As shown, the main body 2 and / or base 3 are provided with an independent battery compartment 32. Because in this embodiment, the battery 8 is located at the connection between the base 3 and the main body 2, and part of the battery 8 extends into the main body 2, the battery compartment 32 also extends from the base 3 into the main body 2. Providing an independent battery compartment 32 minimizes the impact of the drive motor's heat on the battery 8. Furthermore, in this embodiment, a battery cover 33 is provided at the battery port 31. The battery cover 33 and the battery compartment 32 form a separate chamber to accommodate the battery 8.

[0045] In this embodiment, the base 3 extends away from the battery 8 to form an extension 34, which is located below the powder outlet tube 21. The extension 34 has a control key 35 and a PCB circuit board 36 inside it, which communicates with both the control key 35 and the battery 8. This extension 34 helps to increase the footprint of the base 3 and facilitates the placement of the control key 35, providing installation space for electronic components such as the PCB circuit board 36. For ease of positioning, a positioning groove 37 for placing a powder receiving container is also provided at the top of the extension 34 in this embodiment.

[0046] In addition to the detachable design of battery 8, this embodiment also features a detachable bean hopper box 1 on top of the main body 2, as detailed in the following document. Figure 2 As shown, the main body 2 has an open opening 22 at the top, and the bean storage box 1 is detachably connected to the open opening 22, which makes it easy to clean the bean storage box 1.

[0047] In addition to the removable and washable bean hopper box 1, this embodiment also designs the grinding disc 51 to be removable and washable, which can be referred to Figure 2 and Figure 6 As shown, a grinding disc 51 is provided inside the grinding chamber 50. The grinding disc 51 is sleeved on the outer periphery of the grinding core 41. A grinding gap is formed between the inner wall of the grinding disc 51 and the outer wall of the grinding core 41. After coffee beans and other materials fall from the bean hopper box 1, they enter the grinding gap for grinding. In this embodiment, the grinding disc 51 and the grinding chamber 50 are detachably connected. After disassembly, it can be installed or removed through the opening 22. Thus, after the bean hopper box 1 is disassembled, the user can further disassemble the grinding disc 51 to achieve better cleaning.

[0048] Regarding the detachable structure of the grinding disc 51, since the grinding disc 51 typically performs grinding, its material is generally metal or alloy, resulting in high material costs. Therefore, this embodiment optimizes the design by incorporating a grinding disc fixing seat 52. The grinding disc fixing seat 52 is located within the main body 2. The grinding disc fixing seat 52 can generally be injection molded, resulting in low cost and greater structural design flexibility. Therefore, it can be fixedly connected to the grinding disc 51, and the detachability of the grinding disc 51 is achieved by detachably connecting the grinding disc fixing seat 52 to the grinding chamber 50. It should be noted that, without considering cost, the grinding disc fixing seat 52 and the grinding disc 51 can be an integral structure.

[0049] In addition, in order to further reduce the cost of the grinding disc 51 in this embodiment, the grinding disc 51 includes a grinding disc body 511 and a grinding disc base 512. The grinding disc body 511 and the grinding disc base 512 are fixedly connected to the grinding disc fixing base 52. For easy disassembly and assembly, the three are fixed together by a snap-fit ​​connection.

[0050] To improve the grinding effect in this embodiment, an adjusting ring 6 is provided inside the main body 2 to adjust the grinding gap, thus adapting to coffee beans or materials of different sizes or specifications. Furthermore, to both adjust the grinding gap and facilitate disassembly of the grinding disc 51, the structure is optimized in this embodiment. Specifically, the connection between the adjusting ring 6 and the grinding chamber 50 is such that they are mutually restrained in the axial direction and rotatable in the circumferential direction. (Refer to...) Figure 3 or Figure 4 As shown, in this embodiment, a grinding seat 5 is provided inside the main body 2, and a grinding cavity 50 is provided inside the grinding seat 5. The grinding seat 5 is provided with at least two circumferential buckles 53 around the grinding cavity 50. The outer wall of the adjusting ring 6 is provided with an annular protrusion 61. The adjusting ring 6 is fitted onto the outer periphery of the grinding cavity 50, and the annular protrusion 61 is engaged with the circumferential buckles 53 to form an axial direction limit, but the circumferential direction is not limited. The adjusting ring 6 can rotate freely around the outer periphery of the grinding cavity 50.

[0051] Meanwhile, the connection between the grinding disc fixing seat 52 or the grinding disc 51 and the grinding chamber 50 is configured such that they are mutually restrained in the circumferential direction and movable in the axial direction, similarly referring to... Figure 3 or Figure 4 As shown, the grinding base 5 has three positioning protrusions 54 on the wall of the grinding cavity 50, and the outer wall of the grinding disc fixing base 52 has three corresponding insertion grooves 521. During installation, the three positioning protrusions 54 are inserted into the three insertion grooves 521 on the grinding disc fixing base 52, thereby achieving mutual restraint in the circumferential direction. However, in the axial direction, there is no restraint between the grinding disc fixing base 52 and the grinding cavity 50, and they can move freely.

[0052] The adjusting ring 6 is threadedly connected to the grinding disc fixing seat 52 or the grinding disc 51. (See reference) Figure 3 or Figure 6 As shown, the outer wall of the grinding disc fixing seat 52 is provided with an external thread 522, while the inner wall of the adjusting ring 6 is provided with an internal thread 62. The external thread 522 of the grinding disc fixing seat 52 and the internal thread 62 of the adjusting ring 6 are engaged to achieve a threaded connection.

[0053] When adjustment is needed, remove the bean hopper box 1 and rotate the adjusting ring 6 through the open opening 22. Since the adjusting ring 6 is limited in the axial direction by the circumferential latch 53 on the grinding seat 5, the adjusting ring 6 only rotates circumferentially. When the adjusting ring 6 rotates, the grinding disc fixing seat 52, being limited in the circumferential direction by the grinding seat 5, will not follow the adjusting ring 6 in circumferential movement. At the same time, with the help of the threaded connection, the grinding disc fixing seat 52 will move slightly in the axial direction. When the grinding disc fixing seat 52 moves, it drives the grinding disc 51 to move axially as well. When the grinding disc 51 moves, the grinding gap between it and the grinding core 41 will change accordingly. Therefore, the grinding gap is ultimately adjusted by rotating the adjusting ring 6.

[0054] To further enhance washability, the powder outlet pipe 21 is also designed to be detachably connected in this embodiment. Specifically, in this embodiment, the main body 2 has a side opening 23 on its side, and an internal fixing frame 7 is provided inside the main body 2. The internal fixing frame 7 is used to connect the grinding chamber 50 and / or the driver 4. In this embodiment, the internal fixing frame 7 is fixedly connected to the grinding base 5 and also used to fix the drive motor. One end of the powder outlet pipe 21 is detachably connected to the internal fixing frame 7, and the other end extends out of the main body 2 through the side opening 23. It should be noted that in other embodiments, the internal fixing frame 7 can be integrally formed with the grinding base 5.

[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A portable coffee bean grinder with higher flexibility, comprising a main body, a bean box and a convenient base, a driver and a grinding cavity are arranged in the main body, the bean box is communicated with the grinding cavity, the driver is drivingly connected with a grinding core, and the grinding core is located in the grinding cavity, characterized in that, The bean hopper is connected to the top of the main body. From top to bottom, the main body consists of the bean hopper, the grinding chamber, and the driver. A powder outlet tube extends from the side of the main body. The outlet of the powder outlet tube faces downward and the other end is connected to the grinding chamber. The portable coffee grinder also includes a removable battery. The battery is at least partially located below the driver and the powder outlet tube. The lower half of the main body or the base is provided with a battery port for installing or removing the battery.

2. A portable coffee grinder with greater flexibility of use as described in claim 1, characterized in that: The battery port is located on the bottom surface of the base or the side of the main body, and the entire battery is located below the driver and the powder outlet tube.

3. A portable coffee grinder with greater flexibility of use as described in claim 1, characterized in that: The horizontal projected area of ​​the base is greater than the horizontal projected area of ​​the main body, and the area ratio is greater than or equal to 1.

3. The battery is located at the connection point where the base and the main body intersect.

4. A portable coffee grinder with greater flexibility of use as described in claim 3, characterized in that: The driver includes a drive motor. The grinding chamber and the rotation axis of the drive motor are inclined to the base. The center of gravity of the battery and the center of gravity of the bean hopper are located on two different sides of the center of gravity of the drive motor.

5. A portable coffee grinder with greater flexibility of use as described in claim 3, characterized in that: The base extends away from the battery to form an extension, which is located below the powder outlet tube. The extension has a control key and a PCB circuit board inside it. The PCB circuit board is connected to the control key and the battery, respectively.

6. A portable coffee grinder with greater flexibility of use as described in claim 1, characterized in that: The main body and / or base are provided with an independent battery compartment, and a battery cover is provided at the battery port. The battery cover and the battery compartment form a separate chamber for accommodating the battery shown.

7. A portable coffee grinder with greater flexibility of use as described in any one of claims 1 to 6, characterized in that: The main body has an open opening at the top, and the bean hopper box is detachably connected to the open opening.

8. A portable coffee grinder with greater flexibility of use as described in claim 7, characterized in that: The grinding chamber is equipped with a grinding disc, which is sleeved on the outer periphery of the grinding core. A grinding gap is formed between the inner wall of the grinding disc and the outer wall of the grinding core. The grinding disc is detachably connected to the grinding chamber and can be installed or removed through the open opening.

9. A portable coffee grinder with greater flexibility of use as described in claim 8, characterized in that: The main body is provided with a grinding disc fixing seat, which is fixedly connected to the grinding disc or is an integral structure, and the grinding disc fixing seat is detachably connected to the grinding chamber.

10. A portable coffee grinder with greater flexibility of use as described in claim 9, characterized in that: The main body is also provided with an adjusting ring for adjusting the grinding gap. The adjusting ring and the grinding cavity are connected in such a way that they are mutually limited in the axial direction and can rotate in the circumferential direction. The grinding disc fixing seat or the grinding disc and the grinding cavity are mutually limited in the circumferential direction and can move in the axial direction. The adjusting ring is connected to the grinding disc fixing seat or the grinding disc by a thread. When the adjusting ring rotates, it drives the grinding disc fixing seat or the grinding disc to move axially.

11. A portable coffee grinder with greater flexibility of use as described in any one of claims 1 to 6, characterized in that: The main body has a side opening on its side and an internal fixing frame inside the main body. The internal fixing frame is used to connect the grinding chamber and / or the driver. One end of the powder outlet pipe is detachably connected to the internal fixing frame, and the other end extends out of the main body through the side opening.

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