Anti-jamming bean dosing mechanism of coffee machine bean hopper

Abstract

An anti-jamming bean dosing mechanism of a coffee machine bean hopper, used for solving the technical problems that existing similar products are prone to bean jamming during bean dosing and thus splashing is liable to occur when beams enter grinders, fixation among bean dosing components are poor during fitting and in-place detection is lacking. The bean dosing mechanism comprises a bean hopper component (1) and a bean hopper base component (2); a raised arched chamber (1102) is provided on one side of an inclined surface (1101) between an inner wall and a through hole where a bean dosing gear (7) is provided inside a bean box (11) of the bean hopper component (1); one side of the arched chamber (1102) is provided with a bean inlet; one end of the arched chamber (1102) at the bean inlet protrudes and is aligned with a bean dosing opening (601) on a lower cover of the bean box (11) below; an anti-jamming bean gear (8) is provided within the arched chamber (1102); one side of gear blades of the anti-jamming bean gear (8) is aligned with the bean inlet, and the lower portion of the gear blades of the anti-jamming bean gear (8) is aligned with a gap between bean pushing plates at one side of the bean dosing gear (7) within the arched chamber (1102); an arc-shaped rib (1103) is provided on one side of the bean inlet on the outer circumference of the arched chamber (1102) of the bean box (11); and coffee beans guided to a disk surface of the bean dosing gear (7) enter the bean inlet at the bean box (11).

Description

A coffee bean dispenser mechanism for preventing jamming in coffee machines

[0001] Citation of relevant applications

[0002] This invention claims priority to Chinese Patent Application No. 202411515230.1, filed on October 29, 2024, entitled "A Bean Dispensing Mechanism for an Anti-Clogged Coffee Maker Bean Box", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to a coffee bean hopper for coffee machines, specifically a bean dispensing mechanism for an anti-jamming coffee machine bean hopper. Background Technology

[0004] A coffee machine is an electrical appliance used for making coffee. It is generally divided into semi-automatic and fully automatic types. A semi-automatic coffee machine is a traditional Italian coffee machine, where grinding, tamping, filling, brewing, and cleaning of grounds are done manually. A fully automatic coffee machine automates the entire coffee brewing process, including preheating, cleaning, grinding, tamping, brewing, and dispensing. It brews coffee according to scientific data and procedures and has a comprehensive safety system. It is convenient to use; a simple press of a button produces coffee. The grinding mechanism of a coffee machine is a tool that cuts and grinds coffee beans into coffee powder by a motor driving mechanical blades at high speed. However, existing coffee machine grinding mechanisms usually require a certain amount of coffee beans to be placed in the bean hopper before grinding. This makes it difficult to control the amount of coffee beans, especially since most users are not professionals and cannot precisely grind the desired amount. Furthermore, after removing the bean hopper, residual coffee beans may remain on the grinding disc, affecting the next batch of coffee with different flavors mixed together, thus impacting the taste and quality of the coffee. To address this, some existing automatic coffee machines with automatic feeding, grinding, and dispensing mechanisms have anti-jamming structures in their bean feeding mechanisms, such as Chinese patent application number 202420089692.0, authorized on September 17, 2024, entitled "Anti-jamming Structure and Grinding Device." This is mainly achieved by setting a horizontal feeding screw below the bean feeding port in the bean hopper. However, these products and similar products are still prone to bean jamming during the feeding process, causing beans to easily splash out when entering the grinder. They also suffer from poor fit and lack of proper detection between the bean feeding components. Summary of the Invention

[0005] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide a coffee bean dispensing mechanism for an anti-jamming coffee machine, thereby solving the technical problems of existing similar products that are prone to bean jamming and splashing during the dispensing process, poor fit and fixation between dispensing components, and lack of positioning detection. This objective is achieved through the following technical solution.

[0006] A bean dispensing mechanism for an anti-jamming coffee maker includes a bean hopper assembly and a bean hopper base assembly. The bean hopper assembly has a bean hopper cover at the top opening of the bean hopper. A bean dispensing gear is located at the center of the bottom of the bean hopper. Bean-feeding blades are evenly distributed at the bean dispensing gear. A bean dispensing opening is located on one side of the lower bean hopper cover below the gap between the bean-feeding blades. The bean dispensing opening is aligned with a cylindrical sleeve of the lower bean hopper mounting bracket via the bean hopper base. The key structural design feature is that an arched cavity is formed on one side of the inclined surface between the through hole and the inner wall of the bean hopper where the bean dispensing gear is located inside the bean hopper assembly. A bean inlet is located on one side of the arched cavity. One end of the arched cavity at the bean inlet protrudes and aligns with the bean dispensing opening of the lower bean hopper cover. An anti-jamming gear is located within the arched cavity. One side of the anti-jamming gear's gear plate is aligned with the bean inlet, and the lower part of the anti-jamming gear plate is aligned with the gap between the bean-feeding blades on one side of the lower bean hopper gear within the arched cavity. The gear plate of the anti-jamming gear in the arched cavity is inserted into the gap between the bean-pulling plates of the lower bean gear or located above the gap. The rotation of the lower bean gear drives the anti-jamming gear to rotate, or the rotation of the coffee bean stuck in the lower bean gear drives the anti-jamming gear to rotate. Alternatively, a micro motor can be installed at the rear of the anti-jamming gear to achieve its rotation. The cylindrical sleeve at the bottom of the lower bean box mounting rack facilitates the insertion of the powder inlet channel of the grinding assembly and can be replaced or omitted as needed.

[0007] The bean hopper has an arc-shaped rib on one side of the bean inlet of its arched cavity. This rib is arc-shaped and fits against the inner surface of the bean feed plate of the bean feed gear, guiding the coffee beans on the feed plate into the bean inlet of the bean hopper. This structure reduces and minimizes clogging before the coffee beans enter the bean inlet on the arched cavity; that is, it reduces bean buildup at the bean feed baffle, diverts the coffee beans, and ensures smooth bean feeding.

[0008] One end of the fixed shaft of the anti-jamming gear is fixed to the lower gear fixing cover on one side of the arched cavity inside the bean box. The inner side of the arched plate of the lower gear fixing cover has a cylindrical boss. The center hole of the boss is coaxially fitted with the anti-jamming gear and the opening of the arched cavity inside the bean box. The other end of the fixed shaft is inserted into another cylindrical boss on the inner side of the symmetrical arched cavity on the other side. Two silicone sealing rings are respectively provided at both ends of the fixed shaft at the grooves on the outer wall where the cylindrical bosses on both sides connect to the anti-jamming gear. The above is a specific embodiment of the anti-jamming gear installation structure. Other snap-fit ​​methods can also be used to install the fixed shaft and the anti-jamming gear. Simultaneously, damping oil is provided in the grooves on the outer wall, and the anti-jamming gear contains damping oil and silicone sealing rings in an interference fit to prevent coffee beans from leaking out when the bean box is lifted.

[0009] The outer diameter of the bean-feeding gear is provided with an outer frame. A U-shaped metering hole is formed between the gaps between the bean-feeding blades and the outer frame. These metering holes are arranged in a 15-hole equidistant array, and the gaps between the bean-feeding blades are less than 8.5mm. Thus, the bean-feeding blades of the aforementioned bean-feeding gear are arranged in a 24-degree equidistant array, preventing coffee beans from getting stuck between the blades. At the same time, this structure of the bean-feeding gear facilitates automatic metering and separation of coffee beans, reducing the load on the motor rotor and preventing bean jamming.

[0010] The bean-feeding gear includes a bean-feeding gear body and silicone gear blades. The outer diameter edge of the bean-feeding gear body has equidistantly distributed T-shaped slots, arranged in a 15-slot equidistant array. The top T-shaped block of the inner ring of the silicone gear blade is correspondingly engaged and fixed to the T-shaped slot of the bean-feeding gear body, or one end of the silicone gear blade is snapped and fixed to the T-shaped slot of the bean-feeding gear body. The thickness of the silicone gear blade is greater than 3.5 mm. The above is another specific structural embodiment of the bean-feeding gear. The structure where one end of the silicone gear blade is individually snapped and fixed to the T-shaped slot of the bean-feeding gear body has lower structural stability than that of the silicone gear blade with an inner ring; this prevents coffee beans from getting stuck on the top of the silicone gear blade.

[0011] The outer side of the bean box base and the inner side of the bean box mounting frame are respectively provided with corresponding ribs, which are corresponding concave and convex sliding grooves. The inner side of the bean box mounting frame is provided with open edges at both ends. The bean box assembly is inserted obliquely into the bean box base assembly from the side, and the bean box base of the bean box assembly and the bean box mounting frame of the bean box base assembly are positioned and positioned along the ribs. The above structure facilitates the orientation and positioning of the bean box assembly into the bean box base assembly.

[0012] The bean box holder has microswitches at both ends of the outer diameter of the rib section. One side of the top rod has an L-shaped hook, and the other side has a rectangular protrusion. A top rod positioning bracket is located below the top rod, with a semi-circular opening at its left end. This semi-circular opening mates with the lower end of the top rod. The top rod positioning bracket also mates with a cylindrical screw post on one side of the bean box holder. A spring is located between the bottom of the top rod and the top rod positioning bracket. One end of the top rod is inserted into the inner diameter of the rib section of the bean box holder through the bean box holder. The bean box assembly is inserted obliquely into the bean box base assembly from the side. While the bean box base of the bean box assembly and the bean box holder of the bean box base assembly are positioned along the rib, the pressure applied to the top rod triggers the corresponding microswitches, which detect that the bean box assembly and bean box base assembly are properly installed.

[0013] The bottom of the bean box base is provided with at least two magnets, and the top of the corresponding bean box mounting rack is provided with two more magnets. The bean box assembly is inserted diagonally into the bean box base assembly from the side. The bean box base of the bean box assembly and the bean box mounting rack of the bean box base assembly are positioned along the ribs. At the same time, the magnets at the bottom of the bean box base and the magnets on the bean box mounting rack below are attracted to each other. The two magnets are arranged diagonally. The magnet on the other side of the magnetic attraction can also be replaced with an iron washer or an iron screw.

[0014] The bean box assembly has an anti-splash grid inside the bean box. The grid blades of the anti-splash grid are all inclined in the same direction. Four corner positioning posts are located at the bottom corners of the anti-splash grid, corresponding to the positioning screw holes at the four corners inside the bean box. The bean box base is fixed to the bottom of the bean box cover with screws, which are connected to the four corner positioning posts at the bottom of the anti-splash grid. Thus, the anti-splash grid and the bean box are fixedly connected as a single unit. Based on this structure, it can also be installed inside the bean box using a detachable mechanism.

[0015] The cylindrical positioning pin protruding below the bean-feeding gear is inserted into the center hole of the lower bean box cover and fixed together by a retaining spring. The middle of the bean-feeding gear protrudes upward in a conical shape, and the conical slope of the bean-feeding gear is located outside the protruding end of the arched cavity of the bean box. The conical slope of the bean-feeding gear is provided with evenly distributed bean-feeding ribs, and the bottom conical opening is provided with evenly distributed bean-feeding blades. The gap between the bean-feeding blades on one side is aligned with the rectangular bean-feeding opening of the lower bean box cover. The width and length of the bean-feeding opening are greater than the lower bean-feeding opening. The gap between the bean-pulling blades of the bean gear is such that the bean-pulling blade of the lower bean gear is located in the outer groove of the lower bean opening of the bean box cover. The protrusion in the middle of the lower bean box cover inside the groove fits into the tapered opening at the bottom of the lower bean gear. The protrusion on one side of the lower bean opening of the bean box cover is higher than the outer diameter of the gap between the bean-pulling blades. The inner diameter of the groove of the lower bean box cover is provided with equidistant limiting blocks. The gap between the bean-pulling blades of the lower bean gear corresponds to the limiting blocks being placed into the groove of the lower bean box cover. The limiting blocks of the lower bean box cover are engaged with the outer diameter of the protruding sleeve at the bottom of the bean box.

[0016] The bottom of the coffee bean holder rack is equipped with a synchronous motor positioning plate. At the bottom of the synchronous motor positioning plate are a synchronous motor and a synchronous motor mounting bracket. The synchronous motor is mounted on the bottom of the synchronous motor mounting plate via the synchronous motor mounting bracket. The bottom of the synchronous motor mounting bracket has two first screw holes in the middle of one side of a rectangular rim. The second screw holes of the synchronous motor mounting bracket correspond to the weighing sensor below. The other end of the weighing sensor has two third screw holes, and the second screw holes of the weighing sensor correspond to the weighing module mounting base below. This structure facilitates real-time recording of changes in the weight of coffee beans in the coffee bean holder.

[0017] The load cell is L-shaped, and the weighing module mounting base is T-shaped. One end of the load cell's sensor arm has a weighing support plate fixed to the top of the sensor arm with screws. The bottom of this end of the sensor arm is snapped into a limiting groove inside the weighing module mounting base. The other end of the sensor arm extends out of the protruding opening of the weighing module mounting base and is installed and fixed to the mounting groove at the bottom of the synchronous motor mounting bracket. The outer diameter of the sensor arm and the gap at the protruding opening of the weighing module mounting base are aligned. This structure improves the stability, accuracy, and service life of the load cell. The load cell will not be damaged when deformed by downward gravity, and the internal structure of the weighing module mounting base protects the load cell from damage when subjected to lateral oscillations.

[0018] This invention features a reasonable structural design, wide application range, and is less prone to bean jamming and grinder splattering. The bean hopper assembly is easy to assemble and disassemble, and the fit and fixing method between the bean hopper assembly and the bean hopper base assembly is particularly stable. The bean hopper assembly can only start working after it is detected in place. It is suitable for use as a bean hopper discharging mechanism in anti-jamming coffee machines, as well as for structural improvements to similar products. Attached Figure Description

[0019] Figure 1 is a partial exploded structural diagram of the present invention.

[0020] Figure 2 is a schematic diagram of the bottom structure of the bean box in Figure 1.

[0021] Figure 3 is a schematic diagram of the assembled three-dimensional structure of Figure 1.

[0022] Figure 4 is a schematic diagram of the bean box assembly and bean box base assembly in the open state of Figure 3. The arrows in the figure indicate the oblique assembly direction.

[0023] Figure 5 is a schematic diagram of the bottom structure of the bean box component in Figure 4.

[0024] Figure 6 is a schematic diagram of the bottom structure after assembly as shown in Figure 4. The weighing sensor is shown in section AA.

[0025] Figure 7 is a schematic diagram of the AA section structure of Figure 6, with part A outlined in the figure.

[0026] Figure 8 is an enlarged view of part A in Figure 7.

[0027] Figure 9 is a schematic diagram of the enlarged structure of the weighing sensor in Figure 8.

[0028] Figure 10 is an exploded view of the bottom part of the bean box base assembly of the present invention.

[0029] Figure 11 is a schematic diagram of the internal structure of the bean box in Figure 3. The bean box lid and the anti-splash grille are omitted in the figure, and part B is framed.

[0030] Figure 12 is a schematic cross-sectional view of section B in Figure 11.

[0031] Figure 13 is a schematic diagram of the internal structure of the bean box in the omitted state of Figure 11.

[0032] Figure 14 is a schematic diagram of the anti-jamming gear, bean box base, and bottom structure of the bean box in the assembled state of the present invention.

[0033] Figure 15 is a top-view enlarged structural schematic diagram of the lower bean gear of the present invention.

[0034] Figure 16 is a schematic diagram of the improved lower bean gear structure of Figure 15.

[0035] Figure 17 is a schematic diagram of the three-dimensional structure of Figure 16.

[0036] Figure 18 is a schematic diagram of the exploded structure of Figure 17.

[0037] Attached Figures and Their Names: 1. Bean Box Assembly; 2. Bean Box Base Assembly; 3. Transmission Gear; 4. Magnet; 5. Snap Ring; 6. Bean Box Lower Cover; 601. Bean Inlet; 7. Bean Drop Gear; 701. Outer Frame; 8. Anti-Bean Jam Gear; 9. Bean Drop Gear Fixing Cover; 10. Bean Box Base; 11. Bean Box; 1101. Sloping Surface; 1102. Arched Cavity; 1103. Rib Position; 1104. Positioning Screw Hole; 12. Anti-Bean Splashing Grille; 13. Bean Box Lid 14. Bean box mounting rack; 1401. Cylindrical sleeve; 15. Synchronous motor positioning plate; 16. Synchronous motor; 17. Synchronous motor mounting bracket; 18. Weighing sensor; 1801. Sensor bridge arm; 1082. Weighing support plate; 19. Weighing module mounting base; 20. Micro switch; 21. Top rod; 22. Spring; 23. Top rod positioning bracket; 24. Fixed shaft; 25. Silicone sealing ring; 26. Lower bean gear body; 27. Silicone gear blade. Detailed Implementation

[0038] The structure and use of the present invention will now be further described with reference to the accompanying drawings. As shown in Figures 1-15, the mechanism includes a bean box assembly 1 and a bean box base assembly 2. The bean box 11 of the bean box assembly has a bean box cover 13 at the top opening. The bottom center of the bean box has a bean lowering gear 7. The bean lowering blades are evenly distributed at the bean lowering gear. The gap between the bean lowering blades is provided on the side of the lower bean box cover 6. The bean lowering opening is aligned with the cylindrical sleeve 1401 of the lower bean box mounting frame 14 through the bean box base 10. Inside the bean box assembly, the bean lowering gear 7 is provided with an arched cavity 1102 on one side of the inclined surface 1101 between the through hole and the inner wall. The arched cavity has a bean inlet on one side. One end of the arched cavity at the bean inlet protrudes and is aligned with the bean lower opening of the lower bean box cover. The arched cavity has an anti-jamming gear 8. The gear plate of the anti-jamming gear is aligned with the bean inlet, and the lower part of the gear plate of the anti-jamming gear is aligned with the gap between the bean lowering blades on one side of the lower bean lowering gear in the arched cavity. The outer diameter of the arched cavity of the bean box has an arc-shaped rib 1103 on one side of the bean inlet. The rib is arc-shaped and fits the inner surface of the bean-picking plate of the bean-dropping gear, and guides the coffee beans on the plate of the bean-dropping gear into the bean inlet of the bean box.

[0039] Specifically: The bean box of this mechanism has an arched cavity on the left side. Two cylindrical protrusions are located on the left and right sides of the inner wall of the arched cavity. Each protrusion has a circular opening; the circular opening on the left penetrates the left wall. Two circular screw holes are located on either side of the left protrusion, also penetrating the left wall. The lower cover of the bean box has two circular grooves on the front and back sides. A circular through-hole is located in the center of each groove, and a cylindrical protrusion surrounds the through-hole. A lower bean gear fixing cover 9 is located on the outer left side of the arched cavity of the bean box. The arched lower bean gear fixing cover... The inner side of the plate has another cylindrical boss. The central hole of the boss is coaxially engaged with the anti-jamming gear and the opening of the arched cavity inside the bean box. A fixing shaft 24 is provided in the middle of this engagement to fix the anti-jamming gear. Two silicone sealing rings 25 are provided in the groove between the cylindrical bosses on both sides and the outer wall of the fixing shaft of the anti-jamming gear. The fixing shaft passes through the two silicone sealing rings, and the two silicone sealing rings are respectively set on the outer diameter of the fixing shaft. An arc-shaped rib is provided on one side of the back of the arched cavity of the bean box. A lower bean gear is provided below the bean box. The bean-pulling blade of the lower bean gear is surrounded by a ring. The outer diameter of the lower bean gear is provided with an outer frame 701. The gap between the bean-pulling blades and the outer frame form a U-shaped metering hole. The metering hole is arranged in an equidistant array of 15 holes. The gap between the bean-pulling blades is less than 8.5mm.

[0040] As shown in Figures 16-18, this mechanism also has another design for the lower gear structure. The lower gear body 26 has a slot that engages with the silicone gear blade 27. Specifically, the outer diameter edge of the lower gear body has equidistantly distributed T-shaped slots, arranged in a 15-slot array. The top T-shaped block of the inner ring of the silicone gear blade is correspondingly engaged and fixed to the T-shaped slot of the lower gear body, or one end of the silicone gear blade is snapped and fixed to the T-shaped slot of the lower gear body. The thickness of the silicone gear blade is greater than 3.5 mm.

[0041] The outer side of the bean box base and the inner side of the bean box mounting rack are respectively provided with ribs, and the ribs are corresponding concave and convex sliding grooves. The inner side of the bean box mounting rack is provided with open edges at both ends. The bean box assembly is inserted into the bean box base assembly at an angle from the side. The bean box base of the bean box assembly and the bean box mounting rack of the bean box base assembly are positioned along the ribs. Meanwhile, microswitches 20 are respectively provided at both ends of the outer diameter of the rib of the bean box mounting frame, L-shaped hooks are provided on one side of the top rod 21, and rectangular protrusions are provided on the other symmetrical side of the top rod. A top rod positioning bracket 23 is provided below the top rod, and a semi-circular opening is provided at the left end of the top rod positioning bracket. The semi-circular opening of the top rod positioning bracket mates with the lower end of the top rod. The top rod positioning bracket mates with the cylindrical screw post on one side of the bean box mounting frame. A spring 22 is provided between the bottom of the top rod and the top rod positioning bracket. One end of the top rod is inserted into the inner diameter of the rib of the bean box mounting frame through the bean box mounting frame. The bean box assembly is inserted obliquely into the bean box base assembly from the side. The bean box base of the bean box assembly and the bean box mounting frame of the bean box base assembly are positioned along the rib. At the same time, the top rod is pressed by pressure to trigger the corresponding microswitches. The microswitches detect that the bean box assembly and the bean box base assembly are installed in place. Two magnets 4 are provided diagonally at the bottom of the bean box base. The top of the bean box mounting rack corresponding to the magnets is provided with two other magnets. The bean box assembly is inserted diagonally into the bean box base assembly from the side. The bean box base of the bean box assembly and the bean box mounting rack of the bean box base assembly are positioned along the ribs. At the same time, the magnet at the bottom of the bean box base and the magnet of the bean box mounting rack below attract each other.

[0042] The bean box assembly described above has an anti-splash grid 12 inside the bean box. The grid blades of the anti-splash grid are inclined in the same direction. Four corner positioning posts are provided at the bottom corners of the anti-splash grid, corresponding to the positioning screw holes 1104 at the four corners inside the bean box. The bean box base is fixed to the bottom of the bean box cover by screws, and the screws are connected to the four corner positioning posts at the bottom of the anti-splash grid. The cylindrical positioning post protruding below the bean lower gear is inserted into the center hole of the lower bean box cover and fixed together by the snap ring 5. The middle of the bean lower gear is conical and protrudes upward. The conical slope of the bean lower gear is located outside the protruding end of the arched cavity of the bean box. The conical slope of the bean lower gear has bean-pulling ribs distributed at equal intervals. The bottom conical opening has bean-pulling blades distributed at equal intervals. The gap between the bean-pulling blades on one side is aligned with the rectangular bean lower opening of the lower bean box cover. The width and length of the bean lower opening are greater than the bean lower opening. The gap between the bean-pulling blades of the gear is such that the bean-pulling blade of the lower bean gear is located in the outer groove of the lower bean opening of the bean box cover. The protrusion in the middle of the lower bean box cover inside the groove fits into the tapered opening at the bottom of the lower bean gear. The protrusion on one side of the lower bean opening of the lower bean box cover is higher than the outer diameter of the gap between the bean-pulling blades. The inner diameter of the groove of the lower bean box cover is provided with equidistantly distributed limiting blocks. The gap between the bean-pulling blades of the lower bean gear corresponds to the limiting block being placed in the groove of the lower bean box cover. The limiting block of the lower bean box cover is engaged with the outer diameter of the protruding sleeve at the bottom of the bean box.

[0043] The bottom of the aforementioned bean box mounting rack is equipped with a synchronous motor positioning plate 15. At the bottom of the synchronous motor positioning plate are a synchronous motor 16 and a synchronous motor mounting bracket 17. The synchronous motor is mounted on the bottom of the synchronous mounting plate via the synchronous motor mounting bracket. The bottom of the synchronous motor mounting bracket has a rectangular rim with two first screw holes in the middle of one side. The second screw holes of the synchronous motor mounting bracket correspond to the weighing sensor 18 below. The other end of the weighing sensor has two third screw holes, and the second screw holes of the weighing sensor correspond to the weighing module mounting base 19 below. The weighing sensor is L-shaped, and the weighing module mounting base is T-shaped. One end of the sensor arm 1801 of the weighing sensor has a weighing support plate 1802 fixed to the top of the sensor arm by screws. The bottom of this end of the sensor arm is snapped into a limiting groove inside the weighing module mounting base. The other end of the sensor arm extends out of the protruding opening of the weighing module mounting base and is installed and fixed in the mounting groove at the bottom of the synchronous motor mounting bracket. The outer diameter of the sensor arm and the gap at the protruding opening of the weighing module mounting base are aligned.

[0044] When using the machine, first put the coffee beans into the bean hopper. After the machine starts working, the bean feeding gear rotates clockwise, which drives all the coffee beans in the bean hopper into the arched cavity containing the anti-jamming gear. If the coffee beans do not accumulate in the arched cavity, they will fall out of the bean feeding port on the bottom cover of the bean hopper. If they do accumulate, the anti-jamming gear is pushed clockwise by the accumulated coffee beans, which brings the accumulated coffee beans into the gear blades of the anti-jamming gear for rotation, thus slowing down the accumulation of beans during the feeding process.

[0045] In summary, this mechanism specifically relates to an anti-catch-up technology inside the bean hopper during automatic bean dispensing. This is an improved and iterative mechanism for the automatic bean dispensing technology of coffee machines. The bean dispensing gear in the coffee machine's bean hopper is prone to jamming at the dispensing point, causing a poor user experience. Based on this, the existing mechanism is improved to solve the bean jamming problem. The main features of this mechanism are as follows: 1. It uses an anti-catch-up gear transmission to move the accumulated coffee beans, reducing accumulation; 2. The anti-catch-up gear is equipped with damping oil and a silicone sealing ring with an interference fit to prevent coffee beans from leaking out when the bean hopper is lifted.

[0046] The above description is intended to illustrate the technical means of the present invention and is not intended to limit the technical scope of the present invention. Any obvious improvements or substitutions made to the present invention by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of the present invention. For example, the two microswitches and their components on one side of the bean box holder can be omitted, and the two microswitches and their components can be disposed at the bottom of the bean box holder. Simultaneously, the bean box base of the bean box assembly and the bean box holder of the bean box base assembly are positioned along the ribs, and the ribs at the bottom of the bean box base pass through the corresponding through holes of the bean box holder and trigger the corresponding two microswitches.

Claims

1. A bean dispensing mechanism for an anti-jamming coffee maker, comprising a bean hopper assembly (1) and a bean hopper base assembly (2), wherein a bean hopper cover (13) is provided at the opening of the bean hopper (11) of the bean hopper assembly, a bean dispensing gear (7) is provided at the center of the bottom of the bean hopper, and bean dispensing openings (601) are provided on one side of the bean dispensing gear and on the side of the bean dispensing gear, below the gap between the bean dispensing blades, and the bean dispensing openings are aligned with the cylindrical sleeves (1401) of the lower bean hopper mounting bracket (14) through the bean hopper base (10); characterized in that The bean box assembly (1) has an arched cavity (1102) on one side of the inclined surface (1101) between the through hole of the bean lower gear (7) and the inner wall of the bean box (11). A bean inlet is provided on one side of the arched cavity. One end of the arched cavity at the bean inlet protrudes and is aligned with the bean lower opening (601) of the lower bean box cover (6). An anti-jamming gear (8) is provided in the arched cavity. One side of the anti-jamming gear is aligned with the bean inlet, and the lower part of the anti-jamming gear is aligned with the gap between the bean-pulling piece on one side of the bean lower gear (7) in the arched cavity.

2. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The arched cavity (1102) of the bean box (11) has an arc-shaped rib (1103) on one side of the bean inlet. The rib is arc-shaped and fits the inner side of the bean-picking plate of the bean-picking gear (7), and guides the coffee beans on the plate of the bean-picking gear into the bean inlet of the bean box.

3. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... One end of the fixed shaft (24) of the anti-stuck bean gear (8) is fixed to the lower bean gear fixing cover (9) on one side of the arched cavity (1102) inside the bean box (11). The inner side of the arched plate of the lower bean gear fixing cover is provided with a cylindrical boss. The center hole of the boss is coaxially engaged with the anti-stuck bean gear and the opening of the arched cavity inside the bean box. The other end of the fixed shaft is inserted into another cylindrical boss on the inner side of the symmetrical arched cavity. Two silicone sealing rings (25) are respectively provided at both ends of the fixed shaft at the groove on the outer wall where the cylindrical bosses on both sides are connected to the anti-stuck bean gear.

4. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The outer diameter of the bean-feeding gear (7) is provided with an outer frame (701), and the gap between the bean-feeding blades and the outer frame form a U-shaped metering hole. The metering hole is arranged in an equidistant array of 15 holes, and the gap between the bean-feeding blades is less than 8.5 mm.

5. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The lower bean gear (7) includes a lower bean gear body (26) and a silicone gear blade (27). The outer diameter edge of the lower bean gear body is provided with T-shaped opening slots that are evenly distributed. The T-shaped opening slots of the lower bean gear body are arranged in an even array of 15. The top T-shaped block at the inner ring of the silicone gear blade is correspondingly engaged and fixed to the T-shaped opening slot of the lower gear body, or one end of the silicone gear blade is respectively snapped and fixed to the T-shaped opening slot of the lower gear body. The thickness of the silicone gear blade is greater than 3.

5.

6. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The outer side of the bean box base (10) and the inner side of the bean box mounting frame (14) are respectively provided with ribs, the ribs being corresponding concave and convex grooves. The inner side of the bean box mounting frame is provided with open edges at both ends. The bean box assembly (1) is inserted obliquely from the side into the bean box base assembly (2). The bean box base of the bean box assembly and the bean box mounting frame of the bean box base assembly are positioned along the ribs.

7. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 6, characterized in that... The bean box mounting frame (14) has micro switches (20) at both ends of the outer diameter of the rib. The top rod (21) has an L-shaped hook on one side and a rectangular protrusion on the other side. The top rod has a top rod positioning frame (23) below it. The top rod positioning frame has a semi-circular opening at the left end. The semi-circular opening of the top rod positioning frame matches the lower end of the top rod. The top rod positioning frame matches the cylindrical screw post on one side of the bean box mounting frame (14). A spring (22) is provided between the bottom of the top rod and the top rod positioning frame. One end of the top rod is inserted into the inner diameter of the rib of the bean box mounting frame (14) through the bean box mounting frame. The bean box assembly (1) is placed obliquely from the side into the bean box base assembly (2). The bean box base (10) of the bean box assembly and the bean box mounting frame of the bean box base assembly are positioned along the rib. At the same time, the top rod is pressed by the pressure to trigger the corresponding micro switch. The micro switch detects that the bean box assembly and the bean box base assembly are installed in place.

8. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 7, characterized in that... The bottom of the bean box base (10) is provided with at least two magnets (4), and the top of the bean box mounting rack (14) corresponding to the magnet is provided with two other magnets. The bean box assembly (1) is placed diagonally into the bean box base assembly (2) from the side. The bean box base of the bean box assembly and the bean box mounting rack of the bean box base assembly are positioned along the ribs. At the same time, the magnet at the bottom of the bean box base and the magnet of the bean box mounting rack below attract each other.

9. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The bean box assembly (1) has a bean box (11) with a bean splash prevention grille (12) inside. The grille blades are inclined in the same direction. There are four corner positioning posts at the bottom corners of the bean box, corresponding to the positioning screw holes (1104) at the four corners inside the bean box. The bean box base (10) is fixed to the bottom of the bean box cover (6) by screws. At the same time, the screws are connected to the four corner positioning posts at the bottom of the bean splash prevention grille.

10. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The cylindrical positioning pin protruding below the bean-feeding gear (7) is inserted into the center hole of the lower bean box cover (6) and fixed together by the snap ring (5); the middle of the bean-feeding gear protrudes upward in a conical shape, and the conical inclined surface of the bean-feeding gear is located outside the protruding end of the arched cavity (1102) of the bean box (11). The conical inclined surface of the bean-feeding gear is provided with bean-feeding ribs distributed at equal intervals, and the bottom conical opening is provided with bean-feeding blades distributed at equal intervals. The gap between the bean-feeding blades on one side is aligned with the rectangular bean-feeding opening (601) of the lower bean box cover. The width and length of the opening are greater than the gap between the bean-pulling blades of the lower bean gear. The bean-pulling blades of the lower bean gear are located in the outer groove of the lower bean opening of the bean box cover. The protrusion in the middle of the lower bean box cover inside the groove fits into the tapered opening at the bottom of the lower bean gear. The lower bean opening on one side of the lower bean box cover protrudes higher than the outer diameter of the gap between the bean-pulling blades. The inner diameter of the groove of the lower bean box cover is provided with equidistantly distributed limiting blocks. The gap between the bean-pulling blades of the lower bean gear corresponds to the limiting block being placed in the groove of the lower bean box cover. The limiting block of the lower bean box cover is engaged with the outer diameter of the protruding sleeve at the bottom of the bean box (11).

11. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 1, characterized in that... The bottom of the bean box mounting rack (14) is provided with a synchronous motor positioning plate (15). The bottom of the synchronous motor positioning plate is provided with a synchronous motor (16) and a synchronous motor mounting bracket (17). The synchronous motor is mounted on the bottom of the synchronous mounting plate through the synchronous motor mounting bracket. The bottom of the synchronous motor mounting bracket is provided with a rectangular rim with two first screw holes in the middle of one side. The second screw hole of the synchronous motor mounting bracket is in corresponding cooperation with the weighing sensor (18) below. The other end of the weighing sensor is provided with two third screw holes. The second screw hole of the weighing sensor is in corresponding cooperation with the weighing module mounting base (19) below.

12. The bean dispensing mechanism for the anti-jamming coffee machine bean hopper according to claim 11, characterized in that... The weighing sensor (18) is L-shaped. One end of the sensor bridge arm (1801) of the weighing sensor is provided with a weighing support plate (1802) that is fixed to the top of the sensor bridge arm by screws. The bottom of the sensor bridge arm at this end is snapped and fixed to a limiting groove at one end of the weighing module fixing seat (19). The other end of the sensor bridge arm extends out of the protrusion opening of the weighing module fixing seat and is installed and fixed in the mounting groove at the bottom of the synchronous motor fixing bracket (17). The outer diameter of the sensor bridge arm and the gap at the protrusion opening of the weighing module fixing seat are set opposite to each other.

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