Bean dispensing and grinding mechanism for bean hopper of coffee machine

Abstract

A bean dispensing and grinding mechanism for a bean hopper of a coffee machine, aimed at solving the technical problems of beans being prone to jamming during bean dispensing and being prone to splashing outwards when entering a grinder, and bean dispensing assemblies not being fixed well due to poor cooperation. The mechanism comprises a bean hopper assembly, a bean hopper base assembly, and a bean grinder assembly, wherein a bean hopper base of the bean hopper assembly is fixedly arranged at the bottom of a lower cover of a bean hopper by means of screws; two rectangular ribs are provided at the bottom of the bean hopper base, and are columnar ribs; the bean hopper base and a bean hopper mounting frame are placed and positioned along the ribs; the ribs correspondingly fit with and are inserted into rectangular openings at the bean hopper mounting frame of the lower bean hopper base assembly; lower ejector rods of the rectangular openings are respectively pressed downwards to press and trigger corresponding microswitches; a transmission gear is inserted into a cylindrical positioning column at the bottom of a bean dispensing gear to form a fixed fit; and the microswitches respectively trigger a bean grinding electric motor of the bean grinder assembly and a synchronous electric motor of the bean hopper base assembly.

Description

Coffee machine bean box lower bean grinding mechanism

[0001] REFERENCE TO RELATED APPLICATIONS

[0002] The present application claims priority to the Chinese patent application No. 202411325610.9, filed on September 23, 2024, and entitled "Coffee machine bean box lower bean grinding mechanism", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to a coffee machine and its grinding device, and is a coffee machine bean box lower bean grinding mechanism. BACKGROUND

[0004] A coffee machine is an electrical device for making coffee, generally divided into semi-automatic and fully automatic types. The semi-automatic coffee machine is a traditional Italian coffee machine, which grinds, presses, loads, brews, and manually removes residues according to manual operation. The fully automatic coffee machine realizes automatic control of the whole process of brewing coffee, such as preheating, cleaning, grinding, pressing, brewing, and discharging, according to scientific data and procedures to brew coffee, and is equipped with a perfect protection system, making it convenient to use and obtaining coffee by simply pressing a button. The grinding mechanism of the coffee machine is a grinding tool that cuts and grinds coffee beans into coffee powder when the mechanical cutter is rotated at high speed by the motor. However, the existing grinding mechanism of the coffee machine usually needs to put a certain amount of coffee beans into the bean box for grinding by the grinder. In most cases, it is difficult to control the amount of coffee beans, and users who are not professionals cannot grind the required amount of coffee powder. Moreover, after taking out the bean box, there are residual coffee beans above the grinding disc, which affects the mixing of coffee beans of different flavors in the next grinding process and affects the quality of coffee taste. Therefore, some existing coffee machine grinding mechanisms use automatic feeding, grinding, and powder discharging structures, such as the Chinese patent document No. 202320048768.0, granted on June 23, 2023, and entitled "Grinding bean drip coffee machine grinding device"; and the Chinese patent document No. 202322027446.0, granted on April 2, 2024, and entitled "Grinding bean device with static electricity elimination function and coffee machine". However, the above products and similar products still have problems such as coffee beans being stuck, flying out when entering the grinder, and poor cooperation and fixation between the lower bean components. SUMMARY

[0005] In order to overcome the above-mentioned shortcomings, the purpose of the present application is to provide a coffee machine bean box bean grinding mechanism to the field, which solves the technical problems that the existing similar products are still easy to cause beans to be stuck during the process of beans being dropped, and the beans are easy to splash out when entering the grinder, and the cooperation between the bean dropping assemblies is not good. The purpose is achieved through the following technical scheme.

[0006] A coffee machine bean box bean grinding mechanism, which comprises a bean box assembly, a bean box base assembly and a bean grinder assembly, wherein the top of the bean box of the bean box assembly is provided with a bean box cover assembly, the bottom center of the bean box is provided with a bean dropping gear, and the side of the gear leaves distributed equidistantly on the bean dropping gear is provided with a bean dropping port below the gear leaves; the bean dropping port is embedded into the stator support at the top of the bean grinder assembly through the bean box base and the bean box mounting bracket and the cylindrical sleeve below the bean box mounting bracket; the square worm of the synchronous motor of the bean box base assembly is provided with a transmission gear; and the synchronous motor of the bean box base assembly drives the bean dropping gear of the bean box assembly to rotate through the square worm and the transmission gear. The structural design points of the bean box base are that the bean box base is fixedly arranged at the bottom of the lower cover of the bean box through screws, the bottom of the bean box base is provided with two rectangular bone positions, the bone positions are columnar ribs, the bone positions of the bean box base are correspondingly matched and inserted into the rectangular openings at the bean box mounting bracket of the lower bean box base assembly, the two sides of the rectangular opening at the bottom of the bean box mounting bracket are respectively provided with a micro switch fixing seat, the micro switch fixing seat is respectively provided with a micro switch, the bottom of the rectangular opening is respectively provided with a jack, the upper end of the jack is shaped as a rectangle and is inserted into the rectangular opening at the bottom of the bean box mounting bracket, the jack is respectively provided with a spring, the jack is pressed downward to trigger the corresponding micro switch, and meanwhile, the transmission gear is inserted into the cylindrical positioning column at the bottom of the bean dropping gear and is fixedly matched, the micro switch triggers the bean grinding motor of the bean grinder assembly and the synchronous motor of the bean box base assembly to enter the working state. The above-mentioned bean box assembly, bean box base assembly and bean grinder assembly form the bean dropping assembly of the coffee machine, the bean box assembly is convenient to disassemble and clean, and the cylindrical sleeve of the bean box mounting bracket is embedded into the stator support to prevent beans from splashing out during the bean grinding process.

[0007] The outer side of the bean box base and the inner side of the bean box mounting bracket are respectively provided with bone ribs, the bone ribs are corresponding concave-convex sliding grooves, the two ends of the inner side of the bean box mounting bracket are respectively provided with opening edges, the bean box assembly is obliquely placed into the bean box base assembly from the side, the bean box base of the bean box assembly is positioned and fixed along the bone rib between the bean box mounting bracket of the bean box base assembly, and meanwhile, the bone position of the bean box base is correspondingly matched with the rectangular opening at the bean box mounting bracket of the lower bean box base assembly.

[0008] The bottom of the bean box base is provided with at least two magnets, the top of the corresponding bean box placing rack is provided with another two corresponding magnets, the bean box assembly is obliquely placed into the bean box base assembly from the side, the bean box base of the bean box assembly and the bean box placing rack of the bean box base assembly are placed and positioned along the bone, meanwhile, the magnets of the bottom of the bean box base and the magnets of the bean box placing rack below correspond to each other and are attracted, and the magnets are respectively fixed to the bean box base and the bean box placing rack by screws. The above-mentioned magnets adopt the working principle of opposite poles attracting each other, wherein the magnets on one side of the bean box base and the bean box placing rack can also be replaced by iron sheets, and the magnets at the bottom of the bean box base are preferably diagonally arranged.

[0009] The inside of the bean box of the bean box assembly is provided with a bean splash prevention grid, the bottom end corners of the bean splash prevention grid are respectively provided with four end corner positioning columns, corresponding to the positioning screw holes of the four corners inside the bean box, the bean box base is fixedly arranged at the bottom of the lower cover of the bean box by screws, meanwhile, the screws are connected with the four end corner positioning columns at the bottom of the bean splash prevention grid. The above-mentioned bean splash prevention grid in the bean box prevents beans from flying out during the process of bean feeding and prevents the bean feeding gear from being touched by fingers by mistake.

[0010] The side of the inclined surface between the through hole and the inner wall where the bean feeding gear of the bean box assembly is arranged is provided with an arched slope, one side of the arched slope is provided with a bean feeding opening, the other side of the arched slope is provided with three circular holes, the three circular holes are fixedly matched with the three mushroom-shaped positioning columns on one side of the bean blocking silica gel sheet, the other side of the blocking column of the bean blocking silica gel sheet blocks the bean feeding opening, and the arched shape of the bean blocking silica gel sheet corresponds to the slope. The above-mentioned bean blocking silica gel sheet is fixedly matched with the bean box through three points, thereby increasing the stability, the silica gel elasticity of the bean blocking silica gel sheet is utilized to bounce away part of the beans during the process of bean feeding, thereby preventing a large amount of beans from flowing to the bean feeding opening and causing accumulation during the process of bean feeding.

[0011] The protruding cylindrical positioning column below the bean feeding gear is inserted into the central hole of the lower cover of the bean box below and is fixedly matched with the snap spring to form an integrated whole, one side of the lower cover of the bean box is provided with the bean feeding opening, and the bean feeding opening protrudes from the bean box base at the bottom of the lower cover of the bean box.

[0012] The middle of the bean feeding gear protrudes upward in a conical shape, the conical inclined surface of the bean feeding gear is provided with equidistantly distributed bean pushing ribs, the bottom conical opening is provided with equidistantly distributed gear leaves, the gap between the gear leaves on one side is aligned with the rectangular bean feeding opening of the lower cover of the bean box below, the width and length of the bean feeding opening are greater than the gap between the gear leaves of the bean feeding gear, the gear leaves of the bean feeding gear are located outside the groove of the bean feeding opening of the lower cover of the bean box, the boss in the middle of the lower cover of the bean box is sleeved into the bottom conical opening of the bean feeding gear, one side of the bean feeding opening of the lower cover of the bean box protrudes outward beyond the gap between the gear leaves, the groove of the lower cover of the bean box is provided with equidistantly distributed limiting blocks, the gap between the gear leaves of the bean feeding gear corresponds to the limiting blocks and is inserted into the groove of the lower cover of the bean box, and the limiting blocks of the lower cover of the bean box are buckled with the outer diameter block groove of the protrusion at the bottom of the bean box.

[0013] The left side of the top rod is provided with an L-shaped hook, the right side of the top rod is provided with a rectangular convex point, the lower side of the top rod is provided with a top rod positioning frame, the left end of the top rod positioning frame is provided with a semicircular opening, the semicircular opening of the top rod positioning frame is matched with the lower end of the top rod, the top rod positioning frame is matched with the cylindrical screw column below the bean box placing frame, and the spring is arranged between the lower side of the top rod and the top rod positioning frame.

[0014] The left and right sides of the inside of the bean box base are provided with four horizontal rod screw columns, which are fixedly matched with the first screw holes of the bean box base left horizontal rod and the bean box base right horizontal rod on the two sides of the bean box base.

[0015] The bottom of the bean box placing frame is provided with a synchronous motor positioning piece, the bottom of the synchronous motor positioning piece is provided with a synchronous motor and a synchronous motor fixing frame, the synchronous motor is arranged at the bottom of the synchronous motor fixing piece through the synchronous motor fixing frame, the bottom of the synchronous motor fixing frame is provided with a rectangular surrounding edge, one side of the rectangular surrounding edge is provided with two second screw holes, the second screw holes of the synchronous motor fixing frame are matched with the weighing module below, the other end of the weighing module is provided with two third screw holes, and the third screw holes of the weighing module are matched with the weighing module fixing seat below. The above structure facilitates real-time recording of the weight change of beans in the bean box.

[0016] The structure of the present application is reasonable in design, wide in application, not easy to produce bean clamping and grinder spatter, convenient to disassemble and assemble the bean box assembly, especially the cooperation and fixing mode between the bean box assembly and the bean box seat assembly and the bean box seat assembly and the bean grinder assembly is stable, and the bean box assembly is accurately positioned before starting to work. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a schematic diagram of the structure of the present application.

[0018] Fig. 2 is a schematic diagram of the structure of the bean box assembly in the opened state of Fig. 1.

[0019] Fig. 3 is a schematic diagram of the exploded structure of Fig. 1.

[0020] Fig. 4 is a schematic diagram of the bottom structure of the exploded structure of the bean box assembly of Fig. 3.

[0021] Fig. 5 is a schematic diagram of the internal structure of the bean box of Fig. 3.

[0022] Fig. 6 is a schematic diagram of the bottom structure of the bean box placing frame of Fig. 3.

[0023] Fig. 7 is a schematic diagram of the bottom structure of the bean box seat assembly after assembly of Fig. 3.

[0024] Figure 8 is a schematic diagram of the bottom structure of the bean box assembly of Figure 2 after the bean box assembly is opened, and the dashed line is the bottom structure of the bean box holder.

[0025] Figure 9 is a schematic diagram of the top structure of the bean box seat assembly and the grinder assembly of Figure 8.

[0026] Figure 10 is a schematic diagram of the internal structure of Figure 1 after the bean box is opened and the anti-bean-splashing grid is removed.

[0027] Figure 11 is a schematic diagram of the bottom structure of Figure 1, and the A-A section is shown.

[0028] Figure 12 is a schematic diagram of the internal structure of the A-A section of Figure 11, and the dashed line is the anti-bean-splashing grid.

[0029] Figure 1 is a schematic diagram of the bean box assembly, Figure 2 is a schematic diagram of the bean box seat assembly, Figure 3 is a schematic diagram of the grinder assembly, Figure 4 is a schematic diagram of the bean box cover assembly, Figure 5 is a schematic diagram of the anti-bean-splashing grid, Figure 6 is a schematic diagram of the bean box, Figure 601 is a positioning screw hole, Figure 602 is a slope, Figure 7 is a schematic diagram of the bean-stopping silicone sheet, Figure 701 is a mushroom-shaped positioning column, Figure 8 is a schematic diagram of the lower bean gear, Figure 9 is a schematic diagram of the lower bean cover, Figure 901 is a lower bean opening, Figure 10 is a schematic diagram of the bean box seat, Figure 1001 is a bone site, Figure 11 is a schematic diagram of the left horizontal bar of the bean box seat, Figure 12 is a schematic diagram of the right horizontal bar of the bean box seat, Figure 13 is a schematic diagram of the snap spring, Figure 14 is a schematic diagram of the magnet, Figure 15 is a schematic diagram of the transmission gear, Figure 16 is a schematic diagram of the bean box holder, Figure 1601 is a micro switch fixing seat, Figure 1602 is a cylindrical sleeve, Figure 17 is a schematic diagram of the micro switch, Figure 18 is a schematic diagram of the top rod, Figure 19 is a schematic diagram of the spring, Figure 20 is a schematic diagram of the top rod positioning holder, Figure 21 is a schematic diagram of the synchronous motor positioning sheet, Figure 22 is a schematic diagram of the synchronous motor, Figure 23 is a schematic diagram of the synchronous motor fixing holder, Figure 24 is a schematic diagram of the weighing module, Figure 25 is a schematic diagram of the weighing module fixing seat, and Figure 26 is a schematic diagram of the stator support. DETAILED DESCRIPTION

[0030] The structure and use of the present application are further described in combination with the drawings. As shown in FIGS. 1-12, the mechanism comprises a bean box assembly 1, a bean box base assembly 2, and a bean grinder assembly 3. The bean box assembly is provided with a bean box cover assembly 4 at the top of a bean box 6, and a bean splashing prevention grid 5 is arranged inside the bean box. Four end corner positioning columns are arranged at the bottom end corners of the bean splashing prevention grid, and four corner positioning screw holes 601 are arranged at the four corners inside the bean box. The holes are fixed by screws. An inclined slope 602 is arranged on one side of the inclined surface between the through hole and the inner wall where the lower bean gear 8 is arranged. An inlet for beans is arranged on one side of the inclined slope, and three round holes are arranged on the other side of the inclined slope to fix the three mushroom-shaped positioning columns 701 on one side of the bean blocking silica gel sheet. The other side of the bean blocking silica gel sheet blocks the inlet for beans, and the arched shape of the bean blocking silica gel sheet corresponds to the inclined slope. A lower bean gear is arranged at the center of the bottom of the bean box. A cylindrical positioning column below the lower bean gear is provided with an annular groove. The cylindrical positioning column below the lower bean gear is inserted into the central hole of the lower bean box cover 9 below and fixed by a clasp spring 13. The lower bean box cover is provided with a lower bean inlet 901. The lower bean inlet of the lower bean box cover corresponds to the clasp feature of the other one, and the two correspond to each other. Four horizontal rod screw columns are arranged at the left and right sides of the inside of the bean box base 10 to form fixed cooperation with the first screw holes of the bean box base left horizontal rod 11 and the bean box base right horizontal rod 12 on both sides of the bean box base. Two magnets 14 are arranged at the bottom of the bean box base to correspond to and attract the other two magnets 14 of the bean box holder 16 below. Two rectangular bone features are arranged at the bottom of the bean box base to correspond to the rectangular openings of the bean box holder below. Two microswitch fixing seats 1601 are arranged at the two sides of the rectangular opening at the bottom of the bean box holder. Two jacks 18 are arranged below the rectangular opening. The upper end of the jack is shaped as a rectangle and is inserted into the rectangular opening at the bottom of the bean box holder. An L-shaped hook is arranged at the left side of the jack. A rectangular protrusion is arranged at the right side of the jack. A jack positioning frame 20 is arranged below the jack. A semicircular opening is arranged at the left end of the jack positioning frame to cooperate with the lower end of the jack. The jack positioning frame corresponds to the cylindrical screw column below the bean box holder. A spring 19 is arranged between the jack below and the jack positioning frame. A circular opening is arranged at the center of the bean box holder. Two installation positioning columns are arranged at the two sides of the bottom of the circular opening to correspond to the openings on both sides of the synchronous motor 22 below. The square worm of the synchronous motor passes through the circular opening of the bean box holder and is inserted into the transmission gear 15 above. At the same time, the transmission gear is inserted into the protruding cylindrical positioning column below the lower bean gear to form fixed cooperation.The synchronous motor is provided with a synchronous motor positioning frame 23 below, a hole with a shape corresponding to the synchronous motor in the middle, four circular holes in the synchronous motor positioning frame for cooperation and fixation with four screw positioning columns at the bottom of the bean box placing frame, screw holes around the motor of the synchronous motor for cooperation with the top screw holes of the four screw positioning columns at the bottom of the bean box placing frame, a synchronous motor positioning sheet 21 below the bean box placing frame, a circular groove in the middle of the synchronous motor positioning sheet for cooperation with the synchronous motor, four holes around the circular groove for cooperation with the four cylindrical screw columns at the bottom of the bean box placing frame to fix the synchronous motor positioning sheet, a rectangular surrounding edge at the bottom of the synchronous motor positioning frame, two second screw holes in the middle of one side of the rectangular surrounding edge for cooperation with the weighing module 24 below, two third screw holes at the other end of the weighing module for cooperation with the weighing module fixing seat 25 below; the cylindrical sleeve 1602 of the bean box placing frame is provided with a lower bean opening corresponding to the stator support 26 in the middle of the grinder assembly below.

[0031] Meanwhile, the middle of the lower bean gear is upwardly protruded into a taper shape, the taper surface of the lower bean gear is provided with equally spaced bean pushing ribs, the bottom taper opening is provided with equally spaced gear leaves, the gap between the gear leaves on one side is aligned with the rectangular lower bean opening of the lower bean cover below, the width and length of the lower bean opening are greater than the gap between the gear leaves of the lower bean gear, the gear leaves of the lower bean gear are located outside the circle groove at the lower bean opening of the lower bean cover, the boss in the middle of the circle groove of the lower bean cover is sleeved into the bottom taper opening of the lower bean gear, the lower bean opening of the lower bean cover is protruded on one side to be higher than the outer diameter of the gap between the gear leaves, the inner diameter of the circle groove of the lower bean cover is provided with equally spaced limiting blocks, the gap between the gear leaves of the lower bean gear is put into the circle groove of the lower bean cover corresponding to the limiting blocks, and the limiting blocks of the lower bean cover are buckled with the sleeve opening outer diameter block groove of the bottom protrusion of the bean box.

[0032] The specific implementation scheme of the mechanism is as follows: first, the bean box assembly is put into the bean box base assembly below, and then the bean box assembly and the bean box base assembly are obliquely put from the side, the outer side of the bean box base and the inner side of the bean box placing frame are respectively provided with bones, and the bean box base below is fixed by the attraction of the magnets of the bean box placing frame, the two bones below the bean box base are inserted into the two notches of the bean box placing frame, and the two jacks below the notches are triggered, the jacks are pressed downward to extrude the microswitch, and the machine enters the working state from this point; then, coffee beans are poured into the bean box, the coffee beans are divided by the anti-splashing grid in the bean box to prevent splashing in the subsequent bean grinding process, the lower bean gear rotates clockwise, the gear leaves of the lower bean gear sweep the coffee beans into the lower bean opening of the lower bean cover and fall into the grinder assembly below, and the cylindrical sleeve below the bean box placing frame is embedded into the stator support to prevent the beans from splashing during grinding.

[0033] In use, the bean box cover assembly is opened, coffee beans are placed from above the anti-bean-spraying grid and collected on the inclined surface in the bean box, the coffee beans are sent to the gap between the gear leaves of the lower bean gear and the gear leaves by rotation and stirring of the lower bean gear, the coffee beans enter the lower bean opening of the lower cover of the bean box through the opening of the bean blocking silica gel sheet, at this time the weighing module senses the change in the weight in the bean box, the coffee beans enter the cylindrical sleeve of the bean box holder through the lower bean opening, fall into the upper and lower conical knives in the stator support on the top of the grinder assembly, are coarsely and finely ground by the upper and lower conical knives, and are discharged through the lower powder channel to wait for further extraction and brewing, or are collected and then manually placed into the corresponding coffee machine device for extraction and brewing.

[0034] In summary, the mechanism controls the number and speed of the falling of the beans in the bean box by increasing the silica gel blocking sheet, and the anti-bean-spraying grid and the bean blocking silica gel sheet are designed at the bean inlet of the bean box assembly and the grinder assembly, the lower end of the lower bean gear is designed with a groove, and the bean box is fixed by a snap spring, which solves the problems of the existing similar products, such as the beans being easily blocked during the bean falling process, the beans being easily sprayed outward when entering the grinder, and the poor cooperation and fixation between the bean falling assemblies.

Claims

1. A coffee machine bean box lower bean grinding mechanism, the mechanism comprising a bean box assembly (1), a bean box base assembly (2), a grinder assembly (3), the bean box assembly is provided with a bean box cover assembly (4) at the top of the bean box (6), a lower bean gear (8) is arranged at the center of the bottom of the bean box, and a lower bean port (901) is arranged between the gear leaves on one side of the equidistantly distributed gear leaves at the lower bean gear, the lower bean port is embedded into the stator support (26) of the top of the grinder assembly through the bean box base (10) and the bean box mounting bracket (16), and the cylindrical sleeve (1602) below the bean box mounting bracket; the square worm of the synchronous motor (22) of the bean box base assembly is provided with a transmission gear (15), and the synchronous motor of the bean box base assembly drives the lower bean gear of the bean box assembly to rotate through the square worm and the transmission gear; characterized in that The bean box base (10) is fixedly arranged at the bottom of the bean box lower cover (9) by screws, the bottom of the bean box base is provided with two rectangular bone positions (1001), the bone positions are columnar ribs, the bone positions of the bean box base are correspondingly inserted into the rectangular openings of the bean box placing frame (16) of the lower bean box base assembly (2), the two sides of the rectangular opening at the bottom of the bean box placing frame are respectively provided with a micro switch fixing seat (1601), the micro switch fixing seat is respectively provided with a micro switch (17), the lower side of the rectangular opening is respectively provided with a top rod (18), the upper end of the top rod is shaped as a rectangle and is inserted into the rectangular opening at the bottom of the bean box placing frame, the top rod is respectively provided with a spring (19), the top rod is pressed downward to trigger the corresponding micro switch, meanwhile, the transmission gear (15) is inserted into the cylindrical positioning column at the bottom of the lower bean gear and is fixedly matched, the micro switch triggers the bean grinder motor of the bean grinder assembly (3) and the synchronous motor (22) of the bean box base assembly to enter the working state.

2. Coffee machine bean hopper-to-ground grinding mechanism according to claim 1, characterized in that The outer side of the bean box base (10) and the inner side of the bean box placing frame (16) are respectively provided with bone ribs, the bone ribs are corresponding concave-convex sliding grooves, the two ends of the inner side of the bean box placing frame are respectively provided with open edges, the bean box assembly (1) is obliquely placed into the bean box base assembly (2) from the side, the bean box base of the bean box assembly and the bean box placing frame of the bean box base assembly are positioned along the bone ribs, and meanwhile, the bone positions (1001) of the bean box base are correspondingly matched with the rectangular openings of the bean box placing frame of the lower bean box base assembly.

3. Coffee machine bean hopper-to-ground grinding mechanism according to claim 2, characterized in that The bottom of the bean box base (10) is provided with at least two magnets (14), the top of the corresponding bean box placing frame (16) is provided with another two corresponding magnets, the bean box assembly (1) is obliquely placed into the bean box base assembly (2) from the side, the bean box base of the bean box assembly and the bean box placing frame of the bean box base assembly are positioned along the bone ribs, and meanwhile, the magnets at the bottom of the bean box base and the magnets of the lower bean box placing frame correspondingly attract each other.

4. The coffee maker bean hopper to ground mechanism according to claim 1, wherein The inside of the bean box (6) of the bean box assembly (1) is provided with a bean splash prevention grid (5), the bottom end corners of the bean splash prevention grid are respectively provided with four end corner positioning columns, corresponding to the positioning screw holes (601) of the four corners inside the bean box, the bean box base (10) is fixedly arranged at the bottom of the bean box lower cover (9) by screws, and meanwhile, the screws are connected with the four end corner positioning columns at the bottom of the bean splash prevention grid.

5. The coffee maker bean hopper to ground mechanism according to claim 1, wherein The side of the inclined surface between the through hole and the inner wall where the lower bean gear (8) is arranged in the inside of the bean box (6) of the bean box assembly (1) is provided with an arched slope (602), one side of the slope is provided with a bean inlet, and the other side of the slope is provided with three circular holes, the three circular holes are fixedly matched with the three mushroom-shaped positioning columns (701) on one side of the bean blocking silica gel sheet (7), the other side of the blocking column of the bean blocking silica gel sheet blocks the bean inlet, and the arched shape of the bean blocking silica gel sheet is correspondingly matched with the slope.

6. The coffee maker bean hopper to ground mechanism according to claim 1, wherein The protruding cylindrical positioning column below the lower bean gear (8) is inserted into the central hole of the lower bean tank lower cover (9) and is fixed and matched as a whole by the snap spring (13). One side of the lower bean tank lower cover is provided with the lower bean port (901), and the lower bean port extends out of the bean tank base (10) at the bottom of the lower bean tank lower cover.

7. Coffee machine bean hopper-to-ground grinding mechanism according to claim 6, characterized in that The middle of the lower bean gear (8) is upwardly protruded into a taper, and the taper of the lower bean gear is provided with equally spaced distribution of bean pushing ribs. The bottom taper port is provided with equally spaced distribution of gear leaves. The gap between the gear leaves on one side is aligned with the rectangular lower bean port (901) of the lower bean tank lower cover (9). The width and length of the lower bean port are greater than the gap between the gear leaves of the lower bean gear. The gear leaves of the lower bean gear are located in the outer side groove of the lower bean port of the lower bean tank lower cover. The boss in the middle of the lower bean tank lower cover in the inner side groove is sleeved into the bottom taper port of the lower bean gear. The side of the lower bean port of the lower bean tank lower cover protrudes out of the outer diameter of the gap between the gear leaves. The inner diameter of the groove of the lower bean tank lower cover is provided with equally spaced distribution of limiting blocks. The gap between the gear leaves of the lower bean gear corresponds to the limiting blocks placed in the groove of the lower bean tank lower cover. The limiting blocks of the lower bean tank lower cover are buckled with the outer diameter block groove of the bottom protrusion of the bean tank (6).

8. The coffee maker bean hopper to ground mechanism according to claim 1, wherein The left side of the ejector rod (18) is provided with an L-shaped hook. The right side of the ejector rod is provided with a rectangular protrusion. The lower side of the ejector rod is provided with an ejector rod positioning frame (20). The left end of the ejector rod positioning frame is provided with a semicircular opening. The semicircular opening of the ejector rod positioning frame is matched with the lower end of the ejector rod. The ejector rod positioning frame is correspondingly matched with the cylindrical screw column below the bean tank placing frame (16). The spring (19) is arranged between the lower side of the ejector rod and the ejector rod positioning frame.

9. The coffee maker bean hopper-to-ground grinding mechanism according to claim 1, wherein The left and right sides inside the bean tank base (10) are provided with four horizontal rod screw columns, which are respectively fixed and matched with the first screw holes of the bean tank base left horizontal rod (11) and the bean tank base right horizontal rod (12) on both sides of the bean tank base.

10. The coffee maker bean hopper to ground mechanism according to claim 1, wherein The bottom of the bean tank placing frame (16) is provided with a synchronous motor positioning piece (21). The bottom of the synchronous motor positioning piece is provided with a synchronous motor (22) and a synchronous motor fixing frame (23). The synchronous motor is arranged at the bottom of the synchronous fixing piece through the synchronous motor fixing frame. The bottom of the synchronous motor fixing frame is provided with a rectangular surrounding edge, one side of which is provided with two second screw holes. The second screw holes of the synchronous motor fixing frame are correspondingly matched with the weighing module (24) below. The other end of the weighing module is provided with two third screw holes. The third screw holes of the weighing module are correspondingly matched with the weighing module fixing seat (25) below.

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