Coffee machine grinder capable of uniformly distributing powder

Abstract

The utility model relates to a coffee machine grinder capable of uniformly distributing powder, which aims at solving the technical problems that a powder feeding channel of the existing like product is easy to block, the powder distribution effect is poor, nonuniformity and residues are generated, and a bean box is placed in place, and a detection trigger structure is complex in design. The coffee machine grinder is characterized in that powder distribution fan blades are arranged in a powder outlet channel at a grinding knife assembly of the coffee machine grinder, a powder screening net is arranged at a bottom channel opening of the powder outlet channel, the powder screening net is fixed to the bottom channel opening of the powder outlet channel through a powder outlet cover in an internal and external thread mode, and a motor shaft of a powder distribution motor extends into the powder outlet channel to be connected with the powder distribution fan blades. A notch is formed in one side of the spiral blade of the powder distribution fan blade, and a top channel opening of the powder outlet channel on one side of the sharpening assembly is exposed out of the machine body; self-locking protruding tongue assemblies are symmetrically arranged on the inner walls of the two sides of the inner bottom of the bean box tray, switch ejector rod assemblies are symmetrically arranged on at least one side of the outer diameter of the bean box tray, and the other switch ejector rod assembly is arranged on one side of the sleeving position of a bean feeding opening of the bean box tray and a knife edge of the knife sharpening assembly.

Description

Technical Field

[0001] The utility model relates to a coffee machine grinder with a bean box, which is a coffee machine grinder with uniform powder distribution. Background Art

[0002] A coffee machine is an electrical device used for making coffee, generally divided into semi-automatic and fully automatic types. A semi-automatic coffee machine is a traditional Italian coffee machine that relies on manual operations for grinding, pressing, loading, brewing, and manually removing residue. A fully automatic coffee machine automatically controls the entire coffee brewing process, including preheating, cleaning, grinding, pressing, brewing, and draining. It brews coffee according to scientific data and procedures, and is equipped with a comprehensive protection system. It is easy to use, requiring only a simple press of a button to obtain coffee. Currently, during the grinding process of a typical fully automatic coffee machine, as the powder enters the lower brewing core, deviations in the design angle can result in uneven distribution of the powder, as well as residual powder in the lower powder channel. This can lead to insufficient extraction and affect the coffee taste. To this end, some existing coffee machines are equipped with a powder distribution structure, such as the Chinese patent application No. 202211337262.8, published on January 10, 2023, and titled "Coffee Powder Distribution Assembly, Coffee Powder Distributor, and Coffee Machine." This powder distribution structure is primarily located in the hopper, not within the grinder's powder drop channel. Another example is the Chinese patent application No. 202411325610.9, published on November 26, 2024, titled "A Coffee Machine Bean Bin Bean Grinding Mechanism." This mechanism uses a microswitch to detect when the bean box assembly is placed into the bean box base assembly. However, the triggering mechanism suffers from poor stability and is prone to breakage. Production and mold making are complex and inconvenient, making repair and replacement difficult. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the present invention aims to provide a coffee grinder that evenly distributes grounds. This solves the technical problems of existing similar products, such as the frequent clogging of the grounds feed channel, poor distribution, unevenness, and residue, as well as the complex design of the bean cassette placement detection and triggering mechanism. This objective is achieved through the following technical solutions.

[0004] A coffee machine grinder for evenly distributing coffee powder, the coffee machine grinder comprising a bean box assembly and a bean grinding assembly, the bean grinding assembly comprising a weighing assembly and a knife grinding assembly, the weighing assembly serving as a bean box base assembly, a raised bean lower opening at the bottom of the weighing assembly fitting with a raised blade at the top of the knife grinding assembly, a bean lower opening in a plate slot at the top of the bean box tray of the weighing assembly being aligned with a bean inlet of the bean box assembly, a motor shaft at a grinding motor of the knife grinding assembly being connected to a grinding knife head assembly in a grinding chamber, the weighing assembly and the knife grinding assembly being fixedly arranged on a machine body, the plate opening at the bean box tray on the top of the weighing assembly being exposed from the machine body, and a powder outlet channel communicating with the grinding chamber in the knife grinding assembly being provided on one side of the knife grinding assembly. The key structural design features include a powder distribution fan blade within the powder outlet channel of the grinder assembly, a powder screen at the bottom of the outlet channel, and a powder screen secured to the bottom of the outlet channel via internal and external threads of the powder cover. The motor shaft of the powder distribution motor extends into the outlet channel and connects to the powder distribution fan blade. The top outlet channel of the grinder assembly may be exposed from the machine body. Consequently, in existing coffee machines without a powder distribution mechanism, ground coffee falls forward and tilts when entering the brewing chamber, resulting in uneven accumulation and affecting the brewed taste. In contrast, the ground coffee of the grinder with a powder distribution mechanism is evenly distributed by the powder distribution mechanism and then evenly accumulated in the brewing chamber.

[0005] The spiral blade of the powder distribution fan has a notch on one side, the notch is 50°-60°, and the height difference between the upper and lower ends of the spiral blade of the powder distribution fan is 6mm-7mm. The above structure further improves its anti-blocking and anti-residue and uniform powder distribution effects.

[0006] The bean box tray has symmetrical self-locking tab assemblies on both sides of the inner wall of the bottom, and a switch push rod assembly is symmetrically located on at least one side of the outer diameter of the bean box tray. When the bean box assembly is placed into the top tray slot of the bean box tray, the protrusion at the bottom of the bean box assembly triggers the microswitch of the switch push rod assembly. Simultaneously, the ribs in the buckle slot at the bottom of the bean box assembly limit and engage with the self-locking tab of the self-locking tab assembly. As the bean box assembly is placed, the self-locking tab assembly is locked in place and the microswitch is triggered by the switch push rod assembly. The program confirms that the bean box assembly is installed and enters the working state.

[0007] The self-locking tongue assembly comprises a tongue fixing cavity, a tongue spring and a bean box self-locking tongue. The bean box self-locking tongue in the tongue fixing cavity extends out of a hole on one side of the tongue fixing cavity and a hole on one side of the convex position of the inner wall of the top groove of the bean box tray through the part of the tongue spring in the tongue fixing cavity. The hole on this side of the tongue fixing cavity is buckled and fixed to the outer groove of the convex position of the bean box tray. When the bean box assembly is placed in the top groove of the bean box tray, the ribs in the buckle groove at the bottom of the bean box assembly are limited and buckled and fixed to the tongue fixing cavity extending out of the self-locking tongue assembly and the self-locking tongue on the inner wall of the top groove of the bean box tray.

[0008] The switch top rod assembly includes a micro switch top rod, a top rod spring, a pan head screw, a micro switch, a top rod bracket and a bracket screw. The micro switch is fixed to the switch slot on the outer diameter side of the bean box tray by the pan head screw. The movable reed on one side of the micro switch extends out of the switch slot and is aligned with the contact at one end of the switch top rod. The convex portion on the other side of the contact is inserted into the edge groove that is raised on the inner wall of the top groove of the bean box tray and has an open top. The other end of the switch top rod is inserted into the top rod bracket and is fixed to the outer diameter of the top rod spring. The top rod bracket is set on the outer diameter of the bean box tray on one side of the micro switch by the bracket screw. When the bean box assembly is placed in the top groove of the bean box tray, the convex point at the bone position at the bottom of the bean box assembly presses down the convex portion of the top rod. The downward movement of the top rod drives the contact to press down the movable reed of the micro switch opening, thereby triggering the micro switch of the switch top rod assembly.

[0009] Another switch top rod assembly is provided on the bottom of the bean box tray or on the outer diameter side of the sharpening assembly at one side of the fitting between the lower bean opening at the bottom protrusion of the bean box tray and the blade edge of the top protrusion of the sharpening assembly.

[0010] The rear powder outlet channel cover on one side of the grinding assembly is integrally formed with the outer shell of the grinding assembly, and the front powder outlet channel cover is snap-fitted and fixed to the opening of the rear powder outlet channel cover. The above structure facilitates the assembly and maintenance of the powder distribution fan blades and the powder distribution motor.

[0011] A motor bracket fixing plate is provided at the bottom of the bean box tray, and a lower bean gear motor is provided at the bottom of the motor bracket fixing plate. The motor shaft of the lower bean gear motor passes through the motor bracket fixing plate and is connected with the transmission gear. The transmission gear passes through the bean box tray and is engaged with the gear hole of the lower bean gear exposed at the bottom of the bean box assembly placed in the disc slot at the top of the bean box tray. The lower bean gear motor is arranged at the bottom of the motor bracket fixing plate through a motor bracket.

[0012] A weighing module is provided on one side of the bottom of the motor bracket fixing plate. The weighing module includes a weighing sensor and a weighing module fixing seat. The weighing support of the weighing sensor is attached to the bottom of the motor bracket fixing plate through the sensor bridge arm. The weighing sensor of the weighing module is limited to a gap in the weighing fixing seat and swings up and down and left and right. The weighing module is arranged at the bottom of the motor support seat of the motor bracket fixing plate.

[0013] An adjusting disk motor is provided on the other side of the bottom of the motor bracket fixing plate. The motor shaft of the adjusting disk motor is engaged with the cutter disc adjusting gear of the outer diameter of the grinding head assembly through the adjusting gear. The rotation of the cutter disc adjusting gear drives the movable cutter sleeve in the grinding head assembly to rotate, and the gap between the movable cutter sleeve in the grinding head assembly and the static cutter head in the grinding head assembly changes. The adjusting disk motor is fixedly arranged on the motor bracket of the motor bracket fixing plate or on one side of the outer shell of the grinding head assembly.

[0014] The utility model has a reasonable structural design, is easy to produce and assemble, is convenient to disassemble and clean, has good stability and a long service life, especially the powder is evenly distributed in the powder outlet channel and is not easy to produce residue, and the bean box assembly is easy to place, accurately detected and firmly placed; the utility model is suitable for use as a coffee machine grinder with uniform powder distribution, and is a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the sharpening component.

[0017] Figure 3 yes Figure 1 Schematic diagram of the exploded structure of the weighing component.

[0018] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure of the self-locking tongue assembly is shown, in which part A is framed and the dotted line represents the outline of the entire machine.

[0019] Figure 5 yes Figure 4 Magnified view of part A.

[0020] Figure 6 yes Figure 1 The schematic diagram of the cross-sectional structure of the switch push rod assembly is shown, in which part B is framed.

[0021] Figure 7 yes Figure 6 Enlarged view of part B.

[0022] Figure 8 yes Figure 1 Schematic diagram of the bottom three-dimensional structure.

[0023] Figure 9 yes Figure 8 The figure omits the bottom cover of the gear box at the grinding motor and the motor bracket at the bottom of the motor bracket fixing plate.

[0024] Figure 10 yes Figure 1 Schematic diagram of the internal structure of the bean box tray after the bean box assembly is removed.

[0025] Figure 11 yes Figure 1 Schematic diagram of the bottom structure of the three main components in the exploded state.

[0026] Figure 12 yes Figure 1 Schematic diagram of the enlarged structure of the powder distribution fan blade.

[0027] Figure 13 yes Figure 12 Schematic diagram of the top view structure.

[0028] Figure 14 yes Figure 12 Schematic diagram of the structure from the side at the notch.

[0029] Figure serial number and name: 1, bean box assembly, 2, bean grinding assembly, 3, powder distribution motor, 4, rear powder outlet channel cover, 5, front powder outlet channel cover, 6, powder distribution fan blade, 601, notch, 7, powder sifting net, 8, powder outlet cover, 9, powder distribution motor fixing screw, 10, left tongue fixing cavity, 11, left tongue spring, 12, left bean box self-locking tongue, 13, right bean box self-locking tongue, 14, right tongue spring, 15, right tongue fixing cavity, 16, left micro switch push rod, 17, left push rod spring, 18, left pan head screw Wire, 19. Left micro switch, 20. Right push rod spring, 21. Right pan head screw, 22. Right micro switch push rod, 23. Right micro switch, 24. Left bracket screw, 25. Left push rod bracket, 26. Right bracket screw, 27. Right push rod bracket, 28. Weighing assembly, 29. Bean box tray, 30. Transmission gear, 31. Motor bracket fixing plate, 32. Weighing module, 33. Grinding motor, 34. Adjustment disk motor, 35. Adjustment gear, 36. Lower bean gear motor, 37. Cutter disc adjustment gear. Implementation Method

[0030] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figures 1-14As shown, the coffee machine grinder includes a bean box assembly 1 and a bean grinding assembly 2, and the bean grinding assembly includes a weighing assembly 28 and a grinding blade assembly. The weighing assembly serves as a bean box base assembly, and the raised bean lower opening at the bottom of the weighing assembly fits into the raised blade edge at the top of the grinding blade assembly. The lower bean opening in the top plate groove of the bean box tray 29 of the weighing assembly is aligned with the bean inlet of the bean box assembly. The motor shaft at the grinding motor 33 of the grinding blade assembly is connected to the grinding blade assembly in the grinding chamber. The weighing assembly and the grinding blade assembly are fixedly arranged on the machine body, and the bean box tray opening at the top of the weighing assembly is exposed from the machine body. One side of the grinding blade assembly is provided with a powder discharge channel communicating with the grinding chamber in the grinding blade assembly. The powder outlet channel of the grinding assembly is provided with a powder distribution fan blade 6, and the bottom channel opening of the powder outlet channel is provided with a powder screen 7. The powder screen is fixed to the bottom channel opening of the powder outlet channel by a powder outlet cover 8 with internal and external threads. The motor shaft of the powder distribution motor 3 extends into the powder outlet channel and connects to the powder distribution fan blade. The powder distribution motor is fixed to the outer shell of the grinding assembly at the grinding assembly by a powder distribution motor fixing screw 9 or a buckle. The top channel opening of the powder outlet channel on one side of the grinding assembly may be exposed from the machine body, and the top channel opening of the powder outlet channel is flush with the plate opening of the bean box tray and exposed from the machine body. A notch 601 is provided on one side of the spiral blade of the powder distribution fan blade. The notch is 52.43°, and the height difference between the upper and lower ends of the spiral blade of the powder distribution fan blade is 6.52mm. The rear powder outlet channel cover 4 at the powder outlet channel on one side of the grinding assembly is integrally formed with the outer shell of the grinding assembly, and the front powder outlet channel cover 5 is fixed to the opening of the rear powder outlet channel cover.

[0031] The inner walls on both sides of the bottom of the bean box tray are symmetrically provided with self-locking tongue assemblies, and the outer diameter of the bean box tray is symmetrically provided with a switch top rod assembly on at least one side; when the bean box assembly is placed in the tray groove at the top of the bean box tray, the convex point at the bone position at the bottom of the bean box assembly triggers the micro switch of the switch top rod assembly. At the same time, the rib position in the buckle groove at the bottom of the bean box assembly is limited and buckled to the self-locking tongue of the self-locking tongue assembly. Specifically, the self-locking tongue assembly includes a tongue fixing cavity, a tongue spring and a bean box self-locking tongue. The bean box self-locking tongue in the tongue fixing cavity extends out of a hole on one side of the tongue fixing cavity and a hole on a convex position on one side of the inner wall of the disc groove at the top of the bean box tray through the part of the tongue spring in the tongue fixing cavity. The hole on this side of the tongue fixing cavity is buckled and fixed to the outer groove at the convex position of the bean box tray. When the bean box assembly is placed in the disc groove at the top of the bean box tray, the ribs in the buckle groove at the bottom of the bean box assembly are limitedly buckled and fixed to the tongue fixing cavity extending out of the self-locking tongue assembly and the self-locking tongue on the inner wall of the disc groove at the top of the bean box tray. The switch top rod assembly includes a micro switch top rod, a top rod spring, a pan head screw, a micro switch, a top rod bracket and a bracket screw. The micro switch is fixed to the switch slot on the outer diameter side of the bean box tray by the pan head screw. The movable reed on one side of the micro switch extends out of the switch slot and is aligned with the contact at one end of the switch top rod. The convex portion on the other side of the contact is inserted into the edge groove which is raised on the inner wall of the top groove of the bean box tray and has an open top. The other end of the switch top rod is inserted into the top rod bracket which is fixed and has a top rod spring on the outer diameter. The top rod bracket is set on the outer diameter of the bean box tray on one side of the micro switch by the bracket screw. When the bean box assembly is placed in the top groove of the bean box tray, the convex point at the bone position at the bottom of the bean box assembly presses down the convex portion of the top rod. The downward movement of the top rod drives the contact to press down the movable reed of the micro switch opening, thereby triggering the micro switch of the switch top rod assembly.

[0032] The left self-locking tab assembly includes a left tab fixing cavity 10, a left tab spring 11, and a left bean container self-locking tab 12. The right self-locking tab assembly includes a right bean container self-locking tab 13, a right tab spring 14, and a right tab fixing cavity 15. The left switch push rod assembly includes a left microswitch push rod 16, a left push rod spring 17, a left pan head screw 18, a left micro switch 19, a left bracket screw 24, and a left push rod bracket 25. The right switch push rod assembly includes a right push rod spring 20, a right pan head screw 21, a right microswitch push rod 22, a right micro switch 23, a right bracket screw 26, and a right push rod bracket 27. Another switch push rod assembly is provided on the bottom of the bean container tray or on the outer diameter side of the sharpening assembly, where the lower bean opening at the bottom protrusion of the bean container tray on the weighing assembly fits with the blade edge of the sharpening assembly.

[0033] The bean box tray is provided with a motor bracket fixing plate 31 at the bottom, and a bean lowering gear motor 36 is provided at the bottom of the motor bracket fixing plate. The motor shaft of the bean lowering gear motor passes through the motor bracket fixing plate and is connected to the transmission gear 30. The transmission gear passes through the bean box tray and engages with the gear hole of the bean lowering gear exposed at the bottom of the bean box assembly placed in the tray slot at the top of the bean box tray. The bean lowering gear motor is mounted on the bottom of the motor bracket fixing plate via a motor bracket. A weighing module 32 is provided on one side of the bottom of the motor bracket fixing plate. The weighing module includes a weighing sensor and a weighing module fixing plate. The weighing support plate of the weighing sensor is attached to the bottom of the motor bracket fixing plate via a sensor bridge arm. The weighing sensor of the weighing module is limited within the weighing fixing plate with a gap, allowing it to swing up and down and left and right. The weighing module is mounted on the bottom of the motor bracket of the motor bracket fixing plate. An adjusting disk motor 34 is provided on the other side of the bottom of the motor bracket fixing plate. The motor shaft of the adjusting disk motor is engaged with the cutter disc adjusting gear 37 of the outer diameter of the grinding head assembly through the adjusting gear 35. The rotation of the cutter disc adjusting gear drives the movable cutter sleeve in the grinding head assembly to rotate, and the gap between the movable cutter sleeve in the grinding head assembly and the static cutter head in the grinding head assembly changes. The adjusting disk motor is fixedly arranged on one side of the outer shell of the grinding head assembly.

[0034] The specific implementation plan of the coffee machine grinder is as follows: first, coffee beans are loaded into the bean box assembly, and then the bean box assembly filled with coffee beans is placed into the weighing assembly. During the placement process, the protrusion under the bean box assembly presses the right microswitch push rod of the weighing assembly to trigger the working mode. At the same time, during the placement of the bean box assembly, the bean box assembly squeezes outward the two self-locking protrusions on the left and right sides of the weighing assembly. The self-locking protrusions are squeezed and move outward in a straight line. When they contact the groove area under the bean box assembly, the pressure on the self-locking protrusions is released, and due to the rebound force of the protrusion spring, they rebound along the original route to return to their original position, locking the bean box assembly. The process of removing the bean box assembly is similar. Next, after the bean box assembly and the weighing assembly are locked and the micro switch is triggered, the beans begin to be ground, and the ground coffee powder enters the powder outlet channel. During the powder feeding process, the powder distribution motor inside the powder outlet channel drives the powder distribution fan blades to rotate. As the powder distribution fan blades rotate, the coffee powder falls evenly from the gaps in the powder distribution fan blades, and then passes through the powder sieve and falls evenly into the brewing chamber below.

[0035] In summary, this coffee grinder is a grinder system that evenly distributes powder, specifically a working mechanism in a fully automatic coffee machine that achieves uniform powder distribution. This coffee grinder utilizes a powder cover at the powder outlet, which incorporates a powder distribution fan and screen to address uneven powder distribution. The cover is designed to be threaded for removal, allowing for easy removal of the fan and screen for cleaning. The powder outlet channels are secured with a rear and front cover that snap together, facilitating assembly and disassembly.

Claims

1. A coffee machine grinder for uniformly distributing coffee powder, the coffee machine grinder comprising a bean box assembly (1) and a bean grinding assembly (2), the bean grinding assembly comprising a weighing assembly (28) and a knife grinding assembly, the weighing assembly serving as a bean box base assembly, a raised lower bean opening at the bottom of the weighing assembly fitting with a raised blade edge at the top of the knife grinding assembly, a lower bean opening in a top plate slot of a bean box tray (29) of the weighing assembly being aligned with a bean inlet of the bean box assembly, a motor shaft at a grinding motor (33) of the knife grinding assembly being connected to a grinding knife head assembly in a grinding chamber, the weighing assembly and the knife grinding assembly being fixedly arranged on a machine body, a plate opening at a bean box tray on the top of the weighing assembly being exposed from the machine body, and a powder outlet channel communicating with the grinding chamber in the knife grinding assembly being provided on one side of the knife grinding assembly; and characterized in that A powder distribution fan blade (6) is provided in the powder outlet channel of the knife sharpening assembly, a powder screening net (7) is provided at the bottom channel opening of the powder outlet channel, the powder screening net is fixed to the bottom channel opening of the powder outlet channel through the powder outlet cover (8) with internal and external threads, and the motor shaft of the powder distribution motor (3) extends into the powder outlet channel and is connected to the powder distribution fan blade; the top channel opening of the powder outlet channel on one side of the knife sharpening assembly is exposed to the machine body.

2. The coffee grinder with uniform powder distribution according to claim 1, characterized in that A notch (601) is provided on one side of the spiral blade of the powder distributing fan blade (6), the notch being 50°-60°, and the height difference between the upper and lower ends of the spiral blade of the powder distributing fan blade is 6mm-7mm.

3. The coffee grinder with uniform powder distribution according to claim 1, characterized in that The bean box tray (29) has self-locking tongue assemblies symmetrically provided on both inner walls of the bottom, and a switch top rod assembly symmetrically provided on at least one side of the outer diameter of the bean box tray; when the bean box assembly (1) is placed in the tray slot at the top of the bean box tray, the convex point at the bone position of the bottom of the bean box assembly triggers the micro switch of the switch top rod assembly, and at the same time, the rib position in the buckle groove at the bottom of the bean box assembly is limitedly buckled and fixed to the self-locking tongue of the self-locking tongue assembly.

4. The coffee grinder with uniform powder distribution according to claim 3, characterized in that The self-locking tongue assembly comprises a tongue fixing cavity, a tongue spring and a bean box self-locking tongue. The bean box self-locking tongue in the tongue fixing cavity extends out of a hole on one side of the tongue fixing cavity and an hole on one side of the convex position of the inner wall of the top groove of the bean box tray (29) through the tongue spring in the tongue fixing cavity. The hole on this side of the tongue fixing cavity is fastened and fixed to the outer groove of the convex position of the bean box tray. When the bean box assembly (1) is placed in the top groove of the bean box tray, the inner rib of the buckle groove at the bottom of the bean box assembly is fastened and fixed to the tongue fixing cavity extending out of the self-locking tongue assembly and the self-locking tongue on the inner wall of the top groove of the bean box tray.

5. The coffee grinder with uniform powder distribution according to claim 3, characterized in that The switch top rod assembly comprises a micro switch top rod, a top rod spring, a pan head screw, a micro switch, a top rod bracket and a bracket screw. The micro switch is fixed to the switch slot on the outer diameter side of the bean box tray (29) by the pan head screw. The movable spring on one side of the micro switch extends out of the switch slot and is aligned with the contact at one end of the switch top rod. The convex portion on the other side of the contact is inserted into the edge groove of the inner wall of the top groove of the bean box tray and the top is open. The other end of the switch top rod is inserted into the top rod bracket fixed to the outer diameter of the bean box tray and provided with a top rod spring. The top rod bracket is set on the outer diameter of the bean box tray on one side of the micro switch by the bracket screw. When the bean box assembly (1) is placed in the top groove of the bean box tray, the convex point at the bone position of the bottom of the bean box assembly presses down the convex part of the top rod. The top rod moves downward to drive the contact to press down the movable spring of the micro switch opening, thereby triggering the micro switch of the switch top rod assembly.

6. The coffee grinder with uniform powder distribution according to claim 5, characterized in that Another switch top rod assembly is provided on one side of the bottom of the bean box tray (29) where the lower bean opening at the bottom protrusion and the knife edge at the top protrusion of the knife sharpening assembly fit together, or on the outer diameter side of the knife sharpening assembly.

7. The coffee grinder with uniform powder distribution according to claim 1, characterized in that The rear powder outlet channel cover (4) at the powder outlet channel on one side of the knife sharpening assembly is integrally formed with the outer shell of the knife sharpening assembly, and the front powder outlet channel cover (5) is fastened and fixed to the opening of the rear powder outlet channel cover.

8. The coffee grinder with uniform powder distribution according to claim 1, characterized in that A motor support fixing plate (31) is provided at the bottom of the bean box tray (29), and a lower bean gear motor (36) is provided at the bottom of the motor support fixing plate. The motor shaft of the lower bean gear motor passes through the motor support fixing plate and is connected to the transmission gear (30). The transmission gear passes through the bean box tray and is engaged with the gear hole of the lower bean gear exposed at the bottom of the bean box assembly placed in the disc slot at the top of the bean box tray. The lower bean gear motor is arranged at the bottom of the motor support fixing plate through a motor bracket.

9. The coffee grinder with uniform powder distribution according to claim 8, characterized in that A weighing module (32) is provided on one side of the bottom of the motor bracket fixing plate (31), the weighing module comprising a weighing sensor and a weighing module fixing seat, the weighing support of the weighing sensor being attached to the bottom of the motor bracket fixing plate via a sensor bridge arm, the weighing sensor of the weighing module being limited to a gap provided in the weighing fixing seat and swinging up and down and left and right, and the weighing module being arranged at the bottom of the motor support seat of the motor bracket fixing plate.

10. The coffee grinder with uniform powder distribution according to claim 8, characterized in that An adjusting disk motor (34) is provided on the other side of the bottom of the motor bracket fixing plate (31). The motor shaft of the adjusting disk motor is engaged with the cutter disc adjusting gear (37) of the outer diameter of the grinding cutter head assembly through the adjusting gear (35). The rotation of the cutter disc adjusting gear drives the movable cutter sleeve in the grinding cutter head assembly to rotate, and the gap between the movable cutter sleeve in the grinding cutter head assembly and the stationary cutter head in the grinding cutter head assembly changes. The adjusting disk motor is fixedly arranged on the motor bracket of the motor bracket fixing plate or on one side of the outer shell of the grinding cutter assembly.

Images