Electric coffee grinder

Abstract

This invention discloses an electric coffee grinder, comprising: a grinder body with a powder outlet channel; a weight adjustment component mounted on the grinder body for setting a target weight of the coffee powder; a weighing component located below the powder outlet channel and detachably connected to the lower housing of the grinder body; and a control board electrically connected to the weight adjustment component and the weighing component. The control board controls the drive unit of the grinder body to perform the grinding operation based on the difference between the real-time weight value of the weighing component and the target weight value. This invention solves the problem that in traditional coffee grinders with weighing functions, the grinder and weighing component are integrated, making it impossible to detach the weighing component for separate use.

Description

Technical Field

[0001] This invention belongs to the field of grinding device technology, and more specifically, relates to an electric coffee grinder. Background Technology

[0002] A coffee grinder is a tool that grinds coffee beans into powder by using a motor-driven mechanical blade to cut and grind them. To facilitate grinding, coffee beans are placed inside the grinder, where a grinding device compresses and grinds them into appropriately sized particles for easier brewing. In a coffee grinder, an electric motor drives the grinding device, applying rotational force. When the coffee beans come into contact with the grinding device, it grinds them into small particles for easier brewing.

[0003] Coffee grinders with a weighing function allow users to accurately know the weight of the ground coffee powder. However, the coffee grinder and the weighing component are integrated into one unit, and the weighing component cannot be disassembled for separate use. Summary of the Invention

[0004] To address the issue that the coffee grinder and weighing component are integrated into one unit, making it impossible to detach the weighing component for separate use, the present invention aims to provide an electric coffee grinder. The electric coffee grinder includes: a grinder body with a powder outlet channel; a weight adjustment component mounted on the grinder body for setting the target weight of the desired powder; a weighing component located below the powder outlet channel and connected to the lower housing of the grinder body; and a control board electrically connected to the weight adjustment component and the weighing component. The control board can control the drive unit of the grinder body to perform the grinding operation based on the difference between the real-time weight value of the weighing component and the target weight value.

[0005] Furthermore, the weighing component is detachably mounted on the lower housing.

[0006] Furthermore, the electric coffee grinder also includes: a limiting protrusion on the lower housing; a limiting groove at the bottom of the weighing component; wherein, when the lower housing and the weighing component are installed together, the limiting protrusion and the limiting groove cooperate with each other.

[0007] Furthermore, the weighing assembly is provided with a first signal connector, and the control board is provided with a second signal connector that mates with the first signal connector; wherein, when the lower housing is installed in conjunction with the weighing assembly, the first signal connector and the second signal connector are in contact, and signal transmission can be performed between the first signal connector and the second signal connector.

[0008] Furthermore, the weighing component also includes a display unit, which is disposed on the weighing component and is used to display the real-time weight value and the target weight value; wherein, the weighing component is provided with a timing module.

[0009] Furthermore, the coffee grinder body includes: an upper body, an upper shell, a lower shell, a powder hopper, a grinding assembly, and a drive unit; the powder hopper is located at the top of the upper body, and the grinding assembly is located inside the upper body and below the powder hopper. The grinding assembly includes a female grinding head and a male grinding head, with the female grinding head located at the bottom of the upper body; the drive unit is located inside the lower shell, and the drive unit is used to drive the male grinding head to rotate, cooperating with the female grinding head to perform grinding operations. The ground coffee powder is discharged through the powder outlet channel.

[0010] Furthermore, an ion generator is provided inside the powder outlet channel.

[0011] Furthermore, the upper body is detachably mounted on the upper housing; the upper housing is provided with an insertion receiving groove, and the upper body can be partially inserted into the insertion receiving groove; wherein, the upper body is provided with a first limiting structure, and the upper housing is provided with a second limiting structure, and when the upper body is installed in the insertion receiving groove, the first limiting structure and the second limiting structure cooperate.

[0012] Furthermore, the electric coffee grinder also includes a limiting ring, which covers the insertion point between the upper body and the upper housing and is threadedly connected to the upper housing.

[0013] Furthermore, the upper housing is provided with a mounting boss around the insertion interface of the insertion receiving groove, the mounting boss is provided with an external thread, and the inner wall of the limiting ring is provided with an internal thread that mates with the external thread; the second limiting structure is disposed on the mounting boss.

[0014] The technical effects and advantages of this invention are as follows: 1. The weighing component is detachably connected to the lower housing. When cleaning the electric coffee grinder, the weighing component can be removed to clean the connection between the weighing component and the lower housing. This solves the problem of coffee powder or particles remaining in the installation gap between the weighing component and the housing, making cleaning difficult and improving the convenience of cleaning the coffee grinder for users.

[0015] 2. By setting up signal connection control boards for the weighing component and the drive unit, the operating time and speed of the drive unit can be controlled based on the difference between the real-time measured value and the preset value of the weighing component. Users only need to set the grinding amount, and the electric coffee grinder can automatically control the grinding process according to the user-set amount, and automatically end the grinding operation when the user-set amount is reached. This simplifies the user's operation and improves the intelligence of the electric coffee grinder. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an electric coffee grinder provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the disassembled soybean bin cover and limiting ring; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 yes Figure 1 Schematic diagram of the upper and middle shell structure; Figure 5 yes Figure 1 Schematic diagram of the upper and middle main body; Figure 6 yes Figure 5 A structural diagram showing the removal of the first limiting structure from the upper middle main body, illustrating the positioning components.

[0017] Figure 7 yes Figure 1 A schematic diagram of the structure of a medium-sized electric coffee grinder with the weighing component removed. Figure 8 yes Figure 7 A cross-sectional view of a medium-sized electric coffee grinder; Figure 9 yes Figure 1 A schematic diagram of the lower half of a medium-sized electric coffee grinder; Figure 10 This is a schematic diagram showing the connection between the drive unit, the grinding head, and the rotating blades; Figure 11 yes Figure 1 A schematic diagram of the weighing component.

[0018] In the picture: 10. Upper body; 11. Bean hopper; 12. First limiting structure; 13. Positioning component; 14. Protruding assembly notch; 21. Upper shell; 211. Insertion receiving groove; 212. Mounting boss; 213. Second limiting structure; 22. Lower shell; 221. Grinding receiving panel; 222. Powder outlet; 223. Powder outlet channel; 225. Insertion groove; 226. Connecting plate; 23. Pressure ring; 24. Bean hopper cover; 241. Positioning protrusion; 31. Drive unit; 32. Rotating blade; 33. Male grinding head; 34. Female grinding head; 40. Limiting ring; 50. Powder hopper; 60. Weighing component; 70. Grinding knob; 80. Power switch; 81. Battery; 82. Charging interface. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] See Figure 1 This is a structural schematic diagram of an electric coffee grinder provided by the present invention. Combined with... Figures 1 to 11 The electric coffee grinder includes, for example: a grinder body with a powder outlet channel 223; a weight adjustment component disposed on the grinder body for setting the target weight value of the required powder; a weighing component 60 disposed below the powder outlet channel 223 and detachably connected to the lower housing 22 of the grinder body; and a control board electrically connected to the weight adjustment component and the weighing component 60. The control board can control the drive unit 31 of the grinder body to perform grinding operations based on the difference between the real-time weight value of the weighing component 60 and the target weight value.

[0021] It is understandable that by detachably connecting the weighing assembly 60 to the lower housing 22 and the powder hopper 50 to the weighing assembly 60, the user can disassemble the weighing assembly 60 to clean the connection between the weighing assembly 60 and the lower housing 22 when cleaning the electric coffee grinder, thus enabling a more thorough cleaning. For example, the lower housing 22 has a insertion slot 225 on the side near the weighing assembly 60, and the weighing assembly 60 has a snap-fit ​​buckle on the side near the lower housing 22 that mates with the insertion slot 225.

[0022] Understandably, by electrically connecting the weight adjustment component and the weighing component 60 to the control board, the operating time and speed of the drive unit 31 can be controlled based on the difference between the real-time weight value of the weighing component 60 and the target weight value. The user only needs to set the grinding amount, i.e., the target weight value, and the electric coffee grinder can automatically control the grinding process based on the signal transmission between the weighing component 60 and the weight adjustment component on the grinder body, and automatically end the grinding operation when the user-set grinding amount is achieved. Feedback control of the drive unit 31 through the weighing component 60 simplifies the user's operation.

[0023] Preferably, the electric coffee grinder has a built-in Bluetooth module, allowing users to control the grinder body and / or the weighing assembly 60 via mobile devices such as smartphones. For example, the control board of the weighing assembly 60 has a Bluetooth module, allowing users to directly connect to the weighing assembly 60 via this Bluetooth module, and then perform corresponding operations on the weighing assembly 60 and the grinder body on the mobile device through the signal connection between the weighing assembly 60 and the grinder body. Alternatively, both the control board of the weighing assembly 60 and the control board of the grinder body may have Bluetooth modules, allowing users to directly control the weighing assembly 60 and the grinder body through their respective Bluetooth modules; this is not a limitation.

[0024] In one specific embodiment, the weighing component 60 is an electronic scale, and the control board of the electronic scale is equipped with a Bluetooth module. Users can operate the electronic scale via a mobile app, waking it up and displaying its battery level. They can also input the desired weight (target weight) to be ground on the mobile app through the signal connection between the electronic scale and the grinder; and control the grinder to start and stop grinding operations via the mobile app.

[0025] In one specific embodiment, the control panel of the coffee grinder is also equipped with a Bluetooth module. Users can operate the grinder through a mobile app, including waking up the grinder, displaying its battery level, controlling the grinder to start and stop grinding, and setting timed grinding.

[0026] For example, the weighing component 60 is provided with a first signal connector, and the control board is provided with a second signal connector that mates with the first signal connector; wherein, when the weighing component 60 is inserted into the insertion slot 225, the first signal connector and the second signal connector are in contact, and signal transmission can be performed between the first signal connector and the second signal connector.

[0027] In one specific embodiment, the lower housing 22 further includes a connecting plate 226. For example, the connecting plate 226 is disposed below the lower housing 22 and the weighing component 60; the connecting plate 226 is snapped onto the lower housing 22; a weighing component positioning groove is provided on the upper part of the connecting plate 226, and a positioning protrusion corresponding to the weighing component positioning groove is provided on the bottom of the weighing component 60.

[0028] In one specific embodiment, a mounting boss is provided on the upper part of the connecting plate 226, and a mounting groove is provided on the bottom of the weighing component 60. When the weighing component 60 and the connecting plate 226 are installed together, the mounting boss is engaged in the mounting groove. The mounting boss has a built-in magnetic component, and the bottom of the weighing component 60 has a built-in magnetic attraction component. The magnetic attraction between the magnetic component and the magnetic attraction component can fix the mounting boss in the mounting groove, preventing the mounting boss and the mounting groove from separating. Compared with snap-fit ​​and screw connections, the magnetic attraction method is more convenient and faster for installing and disassembling the weighing component 60. For example, the magnetic component is a circular magnet disposed within the mounting boss.

[0029] In one specific embodiment, the weighing component 60 has a built-in power supply and can be used independently of the electric coffee grinder.

[0030] In one specific embodiment, the weighing component 60 also has a timing function, allowing the user to control the extraction time of the coffee during brewing. The weighing component 60 is trapezoidal in shape and has a large, tilted display screen, allowing the user to visually view data such as the weight of the coffee powder and the extraction time.

[0031] Furthermore, the weight adjustment component is a grinding knob 70 located on the pressure ring 23 between the upper housing 21 and the lower housing 22. The grinding knob 70 is used to start the grinding process and set the grinding amount. For example, the user can control the grinding amount by controlling the rotation angle of the grinding knob 70. In one specific embodiment, when the user needs to grind 10g of coffee powder, they first rotate the grinding knob 70 to the 10g grinding position, and then press the grinding knob 70 to start the grinding process. Preferably, the grinding knob 70 is provided with anti-slip texture.

[0032] For example, a power switch 80 is located on the side of the connecting plate 226, and a power indicator light for displaying the remaining power of the electric coffee grinder is also provided on one side of the power switch 80. In one specific embodiment, the electric coffee grinder has a built-in battery 81, and a charging interface 82 is also provided on the lower housing 22.

[0033] Furthermore, the electric coffee grinder also includes a display unit, signal-connected to the weighing component 60, for displaying the weight of coffee powder in the powder hopper 50, the total grinding time required, and the remaining grinding time. For example, the display unit is a screen integrated into the weighing component 60 and includes indicator lights. When the electric coffee grinder is grinding, the indicator lights remain constantly lit; when grinding is complete, the indicator lights begin to flash. In one specific embodiment, the display unit can also be a touchscreen, used as an output device.

[0034] Furthermore, the coffee grinder body includes, for example, an upper body 10, an upper shell 21, a lower shell 22, a grinding assembly, and a drive unit 31; a bean hopper 11 is disposed on top of the upper body 10, and the grinding assembly is located below the bean hopper 11. The grinding assembly includes a female grinding head 34 and a male grinding head 33, with the female grinding head 34 located at the bottom of the upper body 10; the drive unit 31 is located inside the upper shell 21, and the drive unit 31 is used to drive the male grinding head 33 to rotate, cooperating with the female grinding head 34 to perform grinding operations; wherein, the upper body 10 is detachably disposed on the upper shell 21, and the user can remove the upper body 10 to clean the female grinding head 34 and the male grinding head 33 located inside the electric coffee grinder, as well as the grinding receiving panel 221 and the powder outlet channel 223 on the top of the lower shell 22. Understandably, by detachably mounting the upper body 10 onto the upper housing 21, when coffee powder or particles remain on the grinding assembly of the coffee grinder, at the powder receiving panel below the grinding assembly, and in the powder outlet channel 223, the user can easily disassemble the upper body 10 and the upper housing 21 using the quick-release structure between the upper body 10 and the upper housing 21. This allows for the cleaning of coffee powder or particles remaining at the female grinding head 34 at the bottom of the upper body 10, the male grinding head 33 inside the coffee grinder, at the powder receiving panel below the grinding assembly, and in the powder outlet channel 223, thus improving the user's convenience in cleaning the coffee grinder.

[0035] Furthermore, the upper housing 21 is provided with a insertion receiving groove 211, into which the upper main body 10 can be partially inserted. The upper main body 10 is provided with a first limiting structure 12, and the upper housing 21 is provided with a second limiting structure 213. When the upper main body 10 is installed in the insertion receiving groove 211, the first limiting structure 12 and the second limiting structure 213 cooperate. For example, the first limiting structure 12 can be a snap-fit ​​groove or protrusion provided on the periphery or bottom of the upper main body 10; the second limiting structure 213 is a protrusion or snap-fit ​​groove provided on the bottom or periphery of the insertion groove 225 that cooperates with the first limiting structure 12. No limitation is imposed here.

[0036] Understandably, by providing a insertion receiving groove 211 on the upper housing 21, the lower half of the upper body 10 can be inserted into the insertion receiving groove 211 via insertion, thereby enabling quick connection and separation of the upper body 10, which is particularly convenient to operate. Furthermore, by providing a specific first limiting structure 12 on the upper body 10 and a second limiting structure 213 on the upper housing 21, the cooperation between the first limiting structure 12 and the second limiting structure 213 ensures that when the lower half of the upper body 10 is inserted into the insertion receiving groove 211, the upper body 10 will not shift or misalign within the insertion receiving groove 211.

[0037] Preferably, the first limiting structure 12 is a snap-fit ​​protrusion disposed on the periphery of the upper body 10, and the second limiting structure 213 is a snap-fit ​​groove disposed at the insertion interface of the insertion receiving groove 211; when the upper body 10 is installed in the insertion receiving groove 211, the snap-fit ​​protrusion is snapped into the snap-fit ​​groove.

[0038] Understandably, since the upper body 10 is a hollow cylindrical structure with a bean hopper 11 at the top and a female grinding head 34 at the bottom, placing the snap-fit ​​groove on the upper shell 21 is a more reasonable structural design than placing a groove on the upper body 10. Compared to placing the snap-fit ​​protrusion on the periphery of the upper body 10 rather than at the bottom, it makes it easier for users to align the snap-fit ​​protrusion with the snap-fit ​​groove during installation, improving the ease of installation. If the snap-fit ​​protrusion were placed at the bottom of the upper body 10, users might need to make multiple adjustments to align it with the snap-fit ​​groove.

[0039] Furthermore, the snap-fit ​​protrusion is located in the middle of the upper body 10 and is used to limit the insertion depth of the upper body 10; at least one positioning element 13 is also provided on the periphery of the upper body 10. In one specific embodiment, four positioning elements 13 are provided on the outer periphery of the upper body 10. For example, the positioning element 13 can be a positioning bead or a positioning post.

[0040] Understandably, by setting the position of the snap-fit ​​protrusion in the middle of the upper body 10, during factory processing, it is only necessary to process the snap-fit ​​groove at the insertion interface of the insertion receiving groove 211, without having to process a long snap-fit ​​groove on the inner wall of the insertion receiving groove 211. This can shorten the processing depth of the snap-fit ​​groove and reduce the processing cost of the snap-fit ​​groove.

[0041] Preferably, considering that the female grinding head 34 is located at the bottom of the upper body 10, that is, the part of the upper body 10 that inserts into the insertion receiving groove 211, when the grinding assembly performs grinding operations, the bottom of the upper body 10 will be affected by the rotating male grinding head 33, resulting in some vibration. In order to ensure the reliability of the connection between the part of the upper body 10 that inserts into the insertion receiving groove 211 and the insertion receiving groove 211, at least one positioning element 13 is also provided on the periphery of the upper body 10.

[0042] Furthermore, the electric coffee grinder also includes a limiting ring 40, which covers the insertion point between the upper body 10 and the upper housing 21 and is threadedly connected to the upper housing 21. For example, the limiting ring 40 may have an internal thread and the upper housing 21 may have an external thread, or the limiting ring 40 may have an external thread and the upper housing 21 may have an internal thread. There are no restrictions here, as long as the structure can achieve a threaded connection between the limiting ring 40 and the upper housing 21.

[0043] In one specific embodiment, the limiting ring 40 includes an annular limiting plate and a housing connecting plate integrally formed with the annular limiting plate and surrounding its periphery. The housing connecting plate has internal threads on its inner wall, and the upper housing 21 has external threads. When the upper body 10 is inserted into the insertion receiving groove 211, tightening the limiting ring 40 fixes the upper body 10 within the insertion receiving groove 211. When it is necessary to disassemble the upper body 10, loosening the limiting ring 40 allows the upper body 10 to be pulled out of the insertion receiving groove 211.

[0044] It is understandable that by providing a limiting ring 40 at the insertion point between the upper body 10 and the upper housing 21, and by providing a threaded connection between the limiting ring 40 and the upper housing 21, the upper body 10 can be prevented from coming out of the insertion receiving groove 211, and the upper body 10 can be fixed in the axial direction.

[0045] Furthermore, the upper housing 21 is provided with a mounting boss 212 around the insertion interface of the insertion receiving groove 211, the mounting boss 212 is provided with an external thread, and the inner wall of the limiting ring 40 is provided with an internal thread that mates with the external thread.

[0046] It is understandable that by providing a mounting boss 212 at the insertion interface of the insertion receiving groove 211, and providing an external thread on the mounting boss 212 that is screwed to the limiting ring 40, the structural strength at the insertion interface of the insertion receiving groove 211 can be further improved by the mounting boss 212, and the processing difficulty is low.

[0047] Preferably, the second limiting structure 213 is disposed on the mounting boss 212. For example, the second limiting structure 213 is a snap-fit ​​groove formed on the mounting boss 212, and a convex ring is provided in the middle of the upper body 10. Snap-fit ​​protrusions corresponding to the snap-fit ​​grooves are distributed circumferentially on the outer side of the convex ring. When the upper body 10 is installed in the insertion receiving groove 211, the snap-fit ​​protrusions are engaged in the snap-fit ​​grooves. In a specific embodiment, the mounting boss 212 has four snap-fit ​​grooves; the convex ring has four snap-fit ​​protrusions distributed circumferentially on its outer side.

[0048] Understandably, by setting the second limiting structure 213 on the mounting boss 212, it is possible to avoid opening too many slots on the top of the upper housing 21.

[0049] Furthermore, the electric coffee grinder also includes: a rotating blade 32, located below the male grinding head 33 and coaxially arranged with the male grinding head 33; wherein the rotating blade 32 is located above the grinding receiving panel 221.

[0050] It is understandable that by providing a rotating blade 32 coaxially arranged below the grinding head 33, when the drive unit 31 drives the grinding head 33 to rotate and perform grinding operations, the rotating blade 32 can rotate along with it to clean the area above the grinding receiving panel 221 and the grinding particles or powder attached to the side walls of the peripheral components of the grinding assembly.

[0051] Furthermore, the grinding receiving panel 221 has a powder outlet 222, and a powder outlet channel 223 communicating with the powder outlet 222 is provided below the grinding receiving panel 221; wherein, the electric coffee grinder also includes a powder hopper 50. Preferably, a plasma generator is provided at the powder outlet channel 223 to prevent the ground powder from sticking to the inner wall of the powder outlet channel 223.

[0052] For example, after coffee beans are ground into coffee powder or coffee particles between the male grinding head 33 and the female grinding head 34, they fall to the area above the grinding receiving panel 221. Then, under the action of the rotating blades 32, they enter the powder outlet channel 223, which is connected to the powder outlet 222, through the powder outlet 222 on the grinding receiving panel 221. Finally, they enter the powder hopper 50 through the powder discharge port 224 of the powder outlet channel 223.

[0053] Furthermore, the powder outlet channel 223 is inclined. It can be understood that, compared to setting the powder outlet channel 223 vertically downward, setting the powder outlet channel 223 at an incline can better prevent powder from flying out; on the other hand, it can better clean the top of the powder outlet channel 223 from the powder outlet opening 222.

[0054] Furthermore, the electric coffee grinder also includes a bean hopper cover 24, which is movably disposed at the opening of the bean hopper 11 for opening or closing the opening of the bean hopper 11. For example, the bean hopper cover 24 is fitted onto the top of the upper body 10, and the bean hopper cover 24 has a positioning protrusion 241 inside, and the outer wall of the top of the upper body 10 has a protruding assembly notch 14. When the bean hopper cover 24 is fitted onto the top of the upper body 10, the positioning protrusion 241 is precisely engaged at the protruding assembly notch 14.

[0055] In the description of this invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description, and is 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 invention.

[0056] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An electric coffee grinder, characterized in that, The electric coffee grinder includes: The grinder body is equipped with a powder outlet channel (223); The weight adjustment component, located on the main body of the grinder, is used to set the target weight of the required powder; A weighing component (60) is located below the powder outlet channel (223) and connected to the lower housing (22) of the grinder body; The control board is electrically connected to the weight adjustment component and the weighing component (60); wherein the control board is able to control the drive unit (31) of the grinder body to perform grinding operations based on the difference between the real-time weight value and the target weight value of the weighing component (60); A Bluetooth module is installed on the weighing assembly (60) and / or the control board, and a mobile terminal can communicate with the grinder body and / or the weighing assembly through the Bluetooth module.

2. The electric coffee grinder according to claim 1, characterized in that, The weighing component (60) is detachably mounted on the lower housing (22).

3. The electric coffee grinder according to claim 2, characterized in that, The lower housing (22) is provided with a limiting protrusion; the weighing component (60) has a limiting groove at its bottom; wherein, when the lower housing (22) and the weighing component (60) are installed together, the limiting protrusion and the limiting groove cooperate with each other.

4. The electric coffee grinder according to claim 3, characterized in that, The weighing assembly (60) is provided with a first signal connector, and the control board is provided with a second signal connector that cooperates with the first signal connector; wherein, when the lower housing (22) is installed in conjunction with the weighing assembly (60), the first signal connector and the second signal connector are in contact, and signal transmission can be performed between the first signal connector and the second signal connector.

5. The electric coffee grinder according to claim 3 or 4, characterized in that, The weighing component (60) further includes a display screen, which is disposed on the weighing component (60) and is used to display the real-time weight value and the target weight value; wherein, the weighing component is provided with a timing module.

6. The electric coffee grinder according to any one of claims 1-4, characterized in that, The coffee grinder body includes: an upper body (10), an upper shell (21), a lower shell (22), a powder hopper (50), a grinding assembly, and a drive unit (31); the powder hopper (11) is located at the top of the upper body (10), the grinding assembly is located inside the upper body (10) and below the powder hopper (11), the grinding assembly includes a female grinding head (34) and a male grinding head (33), the female grinding head (34) is located at the bottom of the upper body (10); the drive unit (31) is located inside the lower shell (22), the drive unit (31) is used to drive the male grinding head (33) to rotate, and cooperate with the female grinding head (34) to perform grinding operations, and the ground coffee powder is discharged through the powder outlet channel (223).

7. The electric coffee grinder according to claim 6, characterized in that, An ion generator is provided inside the powder outlet channel (223) or at the powder outlet opening (222).

8. The electric coffee grinder according to claim 7, characterized in that, The upper body (10) is detachably mounted on the upper housing (21); the upper housing (21) is provided with a insertion receiving groove (211), and the upper body (10) can be partially inserted into the insertion receiving groove (211); wherein, the upper body (10) is provided with a first limiting structure (12), and the upper housing (21) is provided with a second limiting structure (213), and when the upper body (10) is installed in the insertion receiving groove (211), the first limiting structure (12) and the second limiting structure (213) cooperate.

9. The electric coffee grinder according to claim 6, characterized in that, The electric coffee grinder also includes a limiting ring (40), which covers the insertion point between the upper body (10) and the upper housing (21) and is threadedly connected to the upper housing (21).

10. The electric coffee grinder according to claim 8, characterized in that, The upper housing (21) is provided with a mounting boss (212) around the insertion interface of the insertion receiving groove (211). The mounting boss (212) is provided with an external thread, and the inner wall of the limiting ring (40) is provided with an internal thread that mates with the external thread. The second limiting structure (213) is provided on the mounting boss (212).

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