Grinding mechanism for a coffee maker

Abstract

The application discloses a grinding mechanism of a coffee machine, and belongs to the technical field of coffee machines.The grinding mechanism comprises a wave box seat, a grinding blade assembly, a driving assembly, an adjusting blade assembly and a powder outlet assembly.The adjusting blade assembly comprises a toothed plate, an adjusting plate and a lifting plate.The grinding blade assembly comprises a static blade, which is detachably arranged on the lifting plate.A lifting area is formed between the toothed plate and the lifting plate.The adjusting plate, the lifting plate and the wave box seat are cooperatively arranged and shield the position between the lifting area and the grinding blade assembly.The toothed plate is rotated to adjust the initial position and / or adjust the lifting of the static blade.A wave box seat powder outlet is arranged on the side wall of the wave box seat, and a powder channel cover is detachably arranged on the wave box seat powder outlet.The powder outlet assembly comprises a micro switch and a rocker arm.The micro switch is electrically connected with the driving assembly.A powder receiving assembly is arranged on the rocker arm, and the powder receiving assembly drives the rocker arm to elastically swing in a lever mode and triggers or leaves the micro switch.The grinding mechanism has simple and reasonable structure, stable use and convenient daily maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to a grinding mechanism of a coffee machine. BACKGROUND

[0002] The existing coffee machine usually has a bean grinding function. When working, the bean grinding device in the machine body grinds the coffee beans from the bean bin into coffee powder, and the coffee powder falls into the hopper to complete the grinding of coffee beans and the collection of coffee powder. Meanwhile, the bean grinding device also has an adjusting function to adjust the fineness of the coffee powder.

[0003] For example, a coffee bean grinding device disclosed in Chinese Patent No. CN201220695833.0, a bean grinding coffee machine and its bean grinding device disclosed in Chinese Patent No. CN202310020452.5, a bean grinding mechanism and a bean grinding coffee machine disclosed in Chinese Patent No. CN202220909145.3, a bean grinding device of a bean grinding and dripping coffee machine disclosed in Chinese Patent No. CN202320048768.0, a bean grinding coffee machine disclosed in Chinese Patent No. CN202020827551.6, and the like.

[0004] However, the grinding mechanism of the above-mentioned existing coffee machine has the following defects:

[0005] Firstly, coffee powder or coffee beans that are not completely ground and are in granular or blocky form can easily enter the lifting cavity of the bean grinding device through the gaps of the bean grinding device, causing the lifting member of the lifting cavity to jam during adjustment, affecting the adjustment accuracy of the lifting position, and in severe cases, causing the lifting member to be stuck and unable to rotate, which is inconvenient for users.

[0006] Secondly, the fineness adjustment of coffee powder is completed by a separate adjusting mechanism, which has a complex structure, a large size, a high production cost, a large assembly difficulty, and an inaccurate positioning of components due to the transmission of multiple components in the adjusting mechanism, resulting in uneven fineness of the ground coffee powder and affecting the quality of coffee. In addition, due to the large number of components in the adjusting mechanism, it is difficult to adjust the initial position, so the manufacturer needs to equip additional tools or equipment to complete the adjustment of the initial position of the adjusting mechanism, which increases the production difficulty and maintenance cost.

[0007] Thirdly, the powder outlet is prone to accidental triggering, affecting the stability of the coffee machine.

[0008] Fourthly, the powder outlet and the bean grinding device are integrally arranged, and coffee powder is prone to blockage at the corner between the powder outlet and the bean grinding device. After the blockage, the coffee powder affects the powdering efficiency of the coffee machine, and the corner is not convenient for daily cleaning and maintenance of the coffee powder.

[0009] Therefore, further improvements are necessary. Summary of the Invention

[0010] The present invention aims to provide a grinding mechanism for a coffee machine to overcome the shortcomings of the prior art.

[0011] A grinding mechanism for a coffee machine designed for this purpose includes a gearbox base, and a grinding assembly, a drive assembly, a blade adjusting assembly, and a powder dispensing assembly disposed on the gearbox base.

[0012] The tool adjusting assembly includes a toothed plate, an adjusting plate, and a lifting plate that are rotatably driven together; the tool sharpening assembly includes a stationary blade that can be detachably placed on the lifting plate; a lifting area is formed between the toothed plate and the lifting plate; the adjusting plate, the lifting plate, and the gearbox seat cooperate with each other and shield the position between the lifting area and the tool sharpening assembly.

[0013] The toothed plate can adjust its initial position and / or adjust the static tool height when it rotates.

[0014] The gearbox seat sidewall is provided with a gearbox seat powder outlet, and a powder channel cover is detachably installed on the gearbox seat powder outlet.

[0015] The powder dispensing component includes a micro switch and a rocker arm; the micro switch is electrically connected to the drive component; a powder receiving component is placed on the rocker arm, and the powder receiving component leverages the rocker arm to swing elastically, triggering or disengaging from the micro switch.

[0016] The adjusting plate is provided with an adjusting stop, and the adjusting stop is provided with an annular stop; the bottom surface of the adjusting stop is supported on the toothed plate and covers the lifting plate; the annular stop extends into the lifting plate; the adjusting stop, the annular stop, and the lifting plate cooperate with each other to cover the upper part of the lifting area and the grinding assembly.

[0017] The lifting plate is provided with a lifting stop; the gearbox seat is provided with a gearbox seat opening; the gearbox seat opening has an upward protruding positioning ring; the lifting stop extends into the positioning ring and is lifted and rotated within the positioning ring; the lifting stop and the positioning ring cooperate with each other to block the middle and lower parts of the lifting area and the grinding tool assembly.

[0018] The lifting plate is provided with a support step; the stationary blade is provided with a stationary blade holder, which can be detachably positioned on the support step; the grinding assembly also includes a conical blade; the driving assembly is driven to the conical blade; the conical blade rotates within the stationary blade under the drive of the driving assembly.

[0019] The gearbox housing is provided with a gearbox cavity and a grinding cavity; the upper end of the gearbox cavity is connected to the grinding cavity, and the lower end is open and fixed with a gearbox housing base plate; the upper end of the grinding cavity is provided with a gearbox housing opening; the driving assembly includes a driver, a transmission gear set, a drive shaft, and a powder-dispensing wheel; the stationary blade, the conical blade, and the powder-dispensing wheel are located in the grinding cavity; the upper part of the drive shaft is located in the grinding cavity and is driven connected to the conical blade and the powder-dispensing wheel, and the lower part of the drive shaft is located in the gearbox cavity and is driven connected to the transmission gear set; the driver is fixed to the gearbox housing base plate, and its power output end is driven connected to a screw, the screw extending into the gearbox cavity and driven connected to the transmission gear set.

[0020] The grinding chamber sidewall is provided with the gearbox seat powder outlet; the powder feeding wheel is located on one side of the gearbox seat powder outlet; the powder channel cover is provided with a plug-in positioning part and a powder channel cover snap-fit ​​part; the outer wall of the gearbox seat is provided with a plug-in mating part and a snap-fit ​​mating part; the powder channel cover is detachably plugged into the plug-in mating part through the plug-in positioning part, and detachably fastened to the snap-fit ​​mating part through the powder channel cover snap-fit ​​part. When assembled, the powder channel cover covers the gearbox seat powder outlet and forms an upper powder outlet channel between itself and the outer wall of the gearbox seat; the powder outlet assembly also includes a bracket, the bracket is fixed on the gearbox seat, and its sidewall is provided with a lower powder outlet channel, the lower powder outlet channel and the upper powder outlet channel are interconnected.

[0021] The powder dispensing assembly also includes a bracket, which is fixed on the gearbox base; the powder receiving assembly includes a powder receiving funnel and a handle that is connected to the powder receiving funnel; a switch contact part is provided on the rocker arm, which is located on the upper rear side of the rocker arm; the bracket is fixed on the lower front side of the rocker arm, and a bracket action part is provided thereon; the powder receiving funnel is provided with a funnel protrusion.

[0022] The powder-receiving funnel is placed on the bracket, and when the handle moves downward, the funnel protrusion and the bracket action part cooperate to generate a force on the rocker arm. The rocker arm swings on the bracket by the force, and the switch contact part moves upward with the swing position of the rocker arm as the lever point, triggering the micro switch.

[0023] The upper part of the rocker arm is provided with rocker arm swing parts on both sides, and rocker arm elastic members are provided through the rocker arm swing parts; the bracket is provided with a bracket adapter part; the bracket is provided with a rocker arm pressure block, and the rocker arm pressure block is provided with a pressure block adapter part; the bracket adapter part and the pressure block adapter part correspond to each other and are respectively semi-circular; the rocker arm swing part is oscillatingly supported on the bracket adapter part; the pressure block adapter part is limited and pressed on the rocker arm swing part; one end of the rocker arm elastic member acts elastically on the rocker arm swing part, and the other end acts elastically on the bracket adapter part or the pressure block adapter part.

[0024] The inner wall of the adjusting plate is provided with an adjusting plate driving part; the outer periphery of the toothed plate is provided with a toothed plate driving mating part, and the bottom is provided with a support positioning part; the adjusting plate drives the toothed plate to rotate on the gearbox seat through the cooperation of the adjusting plate driving part and the toothed plate driving mating part; when the adjusting plate rotates within a certain angle range, the stationary tool lifting adjustment is realized; when it rotates outside a certain angle range, the initial position adjustment of the toothed plate is realized.

[0025] The gearbox base is provided with an assembly hole, and an elastic positioning element and a positioning elastic element are provided in the assembly hole. The elastic positioning element elastically expands and contracts on the assembly hole through the positioning elastic element. The support positioning part elastically positions and engages with the elastic positioning element when the gear plate rotates.

[0026] The adjustment plate is also equipped with a bean hopper assembly, which includes a hopper cover, a bean hopper base, a cap, planetary gears, a hopper door, a rotating ring, and a fixing ring. The hopper cover is detachably mounted on the bean hopper base. The cap is located inside the bean hopper base and forms a bean outlet gap with the bean outlet of the bean hopper base. The hopper door has several door baffles arranged in an array, and a door toothed portion is provided on the periphery. The fixing ring, the rotating ring, and the bean hopper base are fixedly connected to each other and form a rotation drive unit. A section of rotating teeth is provided on the inner wall of the rotating ring. The planetary gears are located between the hopper door and the rotating ring, and engage with the door teeth and the rotating teeth to realize the rotational linkage between the hopper door and the rotating ring. When the hopper door rotates, the door baffles open and close the bean outlet and adjust the opening size of the bean outlet.

[0027] The adjustment plate is provided with an adjustment drive engagement part; the bean hopper assembly is disassembled and mounted on the adjustment plate, and is driven to connect with the adjustment drive engagement part by a rotation drive part during assembly.

[0028] The gearbox mount is also equipped with a detection switch for the disassembly and assembly of the bean hopper assembly.

[0029] The present invention, through the improvement of the above-described structure, has the following advantages compared with the prior art:

[0030] 1. The stationary blade and lifting plate are designed as separate units, allowing the stationary blade to be detachably placed on the lifting plate. This enables users to remove the stationary blade from the coffee machine and clean the grinding assembly without disassembling the lifting plate, improving the convenience of cleaning the grinding assembly. Simultaneously, the interaction between the adjusting plate, lifting plate, and gearbox seat effectively shields the area between the lifting area and the grinding assembly, preventing coffee powder or granular / clump-shaped coffee beans from entering the lifting area and causing difficulties or even malfunctions in the drive of the toother plate and lifting plate. This ensures a stable drive connection between the toother plate and lifting plate, improving the adjustment accuracy of the lifting plate and stationary blade. Furthermore, since coffee powder or granular / clump-shaped coffee beans cannot enter the lifting area, the frequency of cleaning and maintenance between the toother plate and lifting plate is reduced, enhancing the user experience.

[0031] Second, the toothed plate can be adjusted to its initial position at the factory and / or to adjust the position of the stationary cutter when it rotates. This allows manufacturers to adjust the initial position of the toothed plate without the need for additional tools or equipment, simplifying the production process and reducing maintenance costs. And / or, it allows users to conveniently adjust the position of the stationary cutter, improving the user experience.

[0032] Third, utilizing the lever principle, the user only needs to apply a small force to the powder receiving component when it is in place to drive the rocker arm to swing elastically. This improves the user experience. The rocker arm's elastic swing can trigger or disengage a microswitch to control the operating state of the drive component, thus enabling the grinding component to grind coffee powder and improving the convenience of the user's coffee powder dispensing operation. Because the powder receiving component uses a lever to drive the rocker arm, its long lever arm when in place allows the user to apply less force to make contact between the rocker arm and the microswitch. When the powder receiving component is not in place, the rocker arm requires a larger force to make contact with the microswitch, effectively avoiding the probability of accidental contact between the rocker arm and the microswitch and ensuring the stable operation of the coffee grinder.

[0033] Fourth, the powder channel cover is detachably installed on the powder outlet of the gearbox. Users can clean the powder outlet of the gearbox after removing the powder channel cover, which facilitates daily maintenance and effectively prevents coffee powder from clogging the powder outlet of the gearbox. Attached Figure Description

[0034] Figure 1 This is an exploded structural diagram of an embodiment of the present invention.

[0035] Figure 2 This is an exploded structural diagram from another perspective of an embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the assembly structure according to an embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the assembly cross-sectional structure according to an embodiment of the present invention.

[0039] Figure 6 for Figure 5 A magnified structural diagram at point A in the diagram.

[0040] Figure 7 This is an exploded view of the soybean storage component.

[0041] Figure 8 This is an exploded view of the tool adjusting assembly and the tool sharpening assembly.

[0042] Figure 9 This is an exploded structural diagram of the tool adjusting assembly and the tool sharpening assembly from another perspective.

[0043] Figure 10 This is an exploded structural diagram of the gearbox base, conical cutter, drive assembly, powder channel cover, elastic positioning component, positioning elastic component, and detection switch.

[0044] Figure 11 This is an exploded structural diagram from another perspective of the gearbox base, conical cutter, drive assembly, powder channel cover, elastic positioning element, positioning elastic element, and detection switch.

[0045] Figure 12 This is an exploded structural diagram of the powder dispensing component.

[0046] Figure 13 This is an exploded structural diagram of the powder dispensing component from another perspective.

[0047] Figure 14 This is a schematic diagram of the assembly cross-sectional structure of the powder dispensing component.

[0048] Figure 15 This is a schematic diagram of the support structure. Detailed Implementation

[0049] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] See Figures 1-15 The grinding mechanism of this coffee machine includes a gearbox base 1, and a grinding assembly, a drive assembly, a blade adjusting assembly, and a powder dispensing assembly disposed on the gearbox base 1.

[0052] The tool adjusting assembly includes a toothed plate 2, an adjusting plate 3, and a lifting plate 4 that are driven to rotate relative to each other; the tool sharpening assembly includes a stationary blade 5, which can be detachably placed on the lifting plate 4; a lifting area X is formed between the toothed plate 2 and the lifting plate 4; the adjusting plate 3, the lifting plate 4, and the gearbox seat 1 cooperate with each other and shield the position between the lifting area X and the tool sharpening assembly.

[0053] The stationary blade 5 and the lifting plate 4 are designed as separate units, allowing the stationary blade 5 to be detachably placed on the lifting plate 4. This enables users to remove the stationary blade 5 from the coffee machine and clean the grinding assembly without disassembling the lifting plate 4, improving the convenience of cleaning the grinding assembly. Simultaneously, the interaction between the adjusting plate 3, the lifting plate 4, and the gearbox seat 1 effectively blocks the position between the lifting area X and the grinding assembly, preventing coffee powder or granular / lumpy coffee beans from entering the lifting area X from the grinding assembly. This prevents problems such as difficulty in driving the gear plate 2 and the lifting plate 4, or even malfunction, thus ensuring a stable driving connection between the gear plate 2 and the lifting plate 4. This improves the adjustment accuracy of the lifting plate 4 and the stationary blade 5. Furthermore, since coffee powder or granular / lumpy coffee beans cannot enter the lifting area X, the frequency of cleaning and maintenance between the gear plate 2 and the lifting plate 4 is reduced, enhancing the user experience.

[0054] The toothed plate 2 achieves initial position adjustment and / or height adjustment of the stationary cutter 5 when rotating.

[0055] When the toothed plate 2 rotates, it can adjust the initial position as it was at the factory and / or adjust the lifting position of the stationary knife 5. This allows manufacturers to adjust the initial position of the toothed plate 2 without the need for additional tools or equipment, simplifying the production process and reducing maintenance costs. It also allows users to conveniently adjust the lifting position of the stationary knife 5, improving the user experience.

[0056] The gearbox seat 1 has a gearbox seat powder outlet 30 on its side wall, and a powder channel cover 31 is detachably installed on the gearbox seat powder outlet 30.

[0057] The powder channel cover 31 is detachably mounted on the powder outlet 30 of the gearbox. Users can clean the powder outlet 30 of the gearbox after removing the powder channel cover 31, which facilitates daily maintenance and effectively prevents coffee powder from clogging the powder outlet 30 of the gearbox.

[0058] The powder dispensing component includes a micro switch 34 and a rocker arm 35; the micro switch 34 is electrically connected to the drive component; a powder receiving component is placed on the rocker arm 35, and the powder receiving component drives the rocker arm 35 to swing elastically in a lever manner, triggering or disengaging from the micro switch 34.

[0059] Utilizing the lever principle, the user only needs to apply a small force to the powder receiving component when it is in place to drive the rocker arm 35 to swing elastically. This improves the user experience. The rocker arm 35 can also trigger or disengage from the microswitch 34 during its elastic swing to control the working state of the drive component, thereby enabling the grinding component to grind coffee powder and improving the convenience of the user's coffee powder dispensing operation. Because the powder receiving component uses a lever mechanism to drive the rocker arm 35, its lever arm is long when it is in place, allowing the user to apply less force to make contact between the rocker arm 35 and the microswitch 34. When the powder receiving component is not in place, the rocker arm 35 requires a larger force to make contact with the microswitch 34, effectively avoiding the probability of accidental contact between the rocker arm 35 and the microswitch 34 and ensuring the stable operation of the coffee grinder.

[0060] The adjusting plate 3 is provided with an adjusting stop 6, and the adjusting stop 6 is provided with an annular stop 7; the bottom surface of the adjusting stop 6 is supported on the toothed plate 2 and blocks the lifting plate 4; the annular stop 7 extends into the lifting plate 4; the adjusting stop 6, the annular stop 7, and the lifting plate 4 cooperate with each other to block the upper position between the lifting area X and the grinding assembly.

[0061] The lifting plate 4 is provided with a lifting stop 8; the gearbox seat 1 is provided with a gearbox seat opening 9; the gearbox seat opening 9 has a positioning ring 10 protruding upward; the lifting stop 8 extends into the positioning ring 10 and is lifted and rotated within the positioning ring 10; the lifting stop 8 and the positioning ring 10 cooperate with each other to block the middle and lower positions between the lifting area X and the grinding tool assembly.

[0062] Specifically, the adjusting plate 3 is annular; the adjusting baffle 6 is positioned inside the adjusting plate 3, facing the center of the adjusting plate 3, with its bottom surface supported on the toothed plate 2 and blocking the lifting plate 4. The adjusting baffle 6 is located above the toothed plate 2 and the lifting plate 4, respectively blocking the upper ends of the toothed plate 2 and the lifting plate 4. The adjusting baffle 6 can block the upper position between the lifting area X and the grinding assembly, and the annular baffle 7 and the lifting plate 4 can block the upper side position between the lifting area X and the grinding assembly, thereby preventing coffee powder or granular or blocky coffee beans from entering the lifting area X from the upper end or upper side.

[0063] In this embodiment, the lifting plate 4, through the cooperation between the lifting stop 8 and the positioning ring 10, can achieve positioning rotation and guiding lifting on the gearbox seat 1, so as to ensure that the lifting plate 4 and the stationary knife 5 will not have displacement or tilting problems during lifting. The toothed plate 2, through the cooperation between the support positioning part 11 and the positioning ring 10, can be positioned and rotated on the gearbox seat 1, so as to ensure that the toothed plate 2 can rotate stably and drive the lifting plate 4 to achieve lifting.

[0064] In this embodiment, the lifting baffle 8 can block the middle side position between the lifting area X and the grinding tool assembly, and the lifting baffle 8 and the positioning ring 10 can block the lower side position between the lifting area X and the grinding tool assembly, thereby preventing coffee powder or granular or blocky coffee beans from entering the lifting area X from the middle side and the lower side.

[0065] The lifting plate 4 is provided with a support step 12; the stationary knife 5 is provided with a stationary knife holder 13, which can be detachably positioned on the support step 12; the grinding assembly also includes a conical knife 14; the drive assembly is driven to the conical knife 14; the conical knife 14 rotates within the stationary knife 5 under the drive of the drive assembly.

[0066] In this embodiment, the lifting plate 4 is annular, and its inner wall is provided with a supporting step 12. A lifting stop 8 is provided on the inner side of the supporting step 12 facing downward. The stationary knife holder 13 is annular, and its upper and lower ends are through-through. The stationary knife 5 is through-through at its upper and lower ends, and the stationary knife 5 is fixedly mounted on the stationary knife holder 13 by a snap fastener, so that the stationary knife 5 and the stationary knife holder 13 are fixed together. The outer wall of the conical knife 14 is provided with a conical cutting edge; the inner wall of the stationary knife 5 is provided with a stationary cutting edge corresponding to the conical cutting edge.

[0067] The stationary tool holder 13 is equipped with a handle ring 15 and a stationary tool holder buckle 16 on its outer wall; the inner wall of the lifting plate 4 is equipped with a lifting plate buckle 17, which is located above the support step 12; the stationary tool holder buckle 16 and the lifting plate buckle 17 are connected and disassembled by a buckle.

[0068] Users can easily remove and place the stationary knife holder 13 and stationary knife 5 from the support step 12 using the handle 15.

[0069] The gearbox base 1 is provided with a gearbox cavity 60 and a grinding cavity 61; the upper end of the gearbox cavity 60 is connected to the grinding cavity 61, and the lower end is open and fixed with a gearbox base plate 62; the upper end of the grinding cavity 61 is provided with a gearbox base opening 9; the drive assembly includes a driver 63, a transmission gear set 64, a drive shaft 65, and a powder-throwing wheel 66; the stationary blade 5, the conical blade 14, and the powder-throwing wheel 66 are located in the grinding cavity 61; the upper part of the drive shaft 65 is located in the grinding cavity 61 and is drivenly connected to the conical blade 14 and the powder-throwing wheel 66, and the lower part of the drive shaft 65 is located in the gearbox cavity 60 and is drivenly connected to the transmission gear set 64; the driver 63 is fixed on the gearbox base plate 62, and its power output end is drivenly connected to a screw 67, which extends into the gearbox cavity 60 and is drivenly connected to the transmission gear set 64.

[0070] In this embodiment, the driver 63 is a drive motor, which drives the transmission gear set 64 to rotate within the gearbox cavity 60 via the screw 67 during operation. The rotation of the transmission gear set 64 drives the drive shaft 65 to rotate, and the rotation of the drive shaft 65 drives the conical blade 14 and the powder-throwing wheel 66 to rotate within the grinding chamber 61, respectively. The conical blade 14 grinds coffee beans by utilizing the cooperation between its conical blade edge and stationary blade edge during rotation.

[0071] The grinding chamber 61 has a gearbox outlet 30 on its side wall; the dispensing wheel 66 is located on one side of the gearbox outlet 30, and when the dispensing wheel 66 rotates, it pushes the coffee powder in the grinding chamber 61 to the outside of the gearbox outlet 30; the powder channel cover 31 is provided with a plug-in positioning part 53 and a powder channel cover snap-fit ​​part 54; the outer wall of the gearbox 1 is provided with a plug-in fitting part 55 and a snap-fit ​​fitting part 56; the powder channel cover 31 is detachably plugged into the plug-in fitting part 55 through the plug-in positioning part 53, and detachably snapped onto the snap-fit ​​fitting part 56 through the powder channel cover snap-fit ​​part 54. When assembled, the powder channel cover 31 covers the gearbox outlet 30 and forms an upper powder dispensing channel 32 between itself and the outer wall of the gearbox 1; the powder dispensing assembly also includes a bracket 33, which is fixed to the gearbox 1 and has a lower powder dispensing channel 57 on its side wall, which is connected to the upper powder dispensing channel 32.

[0072] In this embodiment, the lower part of the gearbox seat powder outlet 30 is arc-shaped, and the side of the powder channel cover 31 is also arc-shaped corresponding to the gearbox seat powder outlet 30, to guide the coffee powder out. The side wall of the bracket 33 is provided with a protruding post, the inner cavity of which forms a lower powder outlet channel 57. At the same time, the upper powder outlet channel 32 and the lower powder outlet channel 57 are both vertically arranged. The upper part of the lower powder outlet channel 57 is inverted cone-shaped and communicates with the upper powder outlet channel 32, so that the coffee powder in the upper powder outlet channel 32 enters the lower powder outlet channel 57 at a fast speed. The lower powder outlet channel 57 concentrates the coffee powder and completes the coffee powder out.

[0073] The powder receiving assembly includes a powder receiving funnel 37 and a handle 38 that is connected to the powder receiving funnel 37; a switch contact part 42 is provided on the rocker arm 35, and the switch contact part 42 is located on the upper rear side of the rocker arm 35; a bracket 36 is fixed on the lower front side of the rocker arm 35, and a bracket action part 40 is provided on it; a funnel protrusion 39 is provided on the powder receiving funnel 37.

[0074] In this embodiment, the switch contact part 42 and the bracket 36 are arranged vertically and horizontally on the rocker arm 35.

[0075] The powder receiving funnel 37 has several funnel protrusions 39 on its periphery; the outer side of the bracket 3 is open; the powder receiving funnel 37 is placed on the bracket 36 through several funnel protrusions 39, and when placed, it acts on the bracket action part 40 through one of the funnel protrusions 39.

[0076] The powder receiving funnel 37 is placed on the bracket 36, and when the handle 38 moves downward, it generates a force on the rocker arm 35 through the cooperation between the funnel protrusion 39 and the bracket action part 40. The rocker arm 35 swings on the bracket 33 by the force, and the switch contact part 42 moves upward with the swing position of the rocker arm 35 as the lever point, triggering the micro switch 34.

[0077] In this embodiment, the handle 38 is positioned far from the rocker arm 35 on the bracket 33, so the rocker arm 35 can be driven to swing with less force. At the same time, the switch contact part 42 is close to the swing position of the rocker arm 35, so the rocker arm 35 only needs to swing a small angle to drive the switch contact part 42 to trigger the micro switch 34. The structure is simple and reasonable, and highly practical. It also makes it easy for users to operate the rocker arm 35 using the powder receiving component, making it convenient to use.

[0078] When the coffee powder receiving assembly is in place, the coffee powder receiving funnel 37 is located directly below the lower coffee powder outlet channel 57. The coffee powder enters the upper coffee powder outlet channel 32 from the side of the gearbox outlet 30, then enters the lower coffee powder outlet channel 57 from the upper coffee powder outlet channel 32, and finally falls into the coffee powder receiving funnel 37 from the lower coffee powder outlet channel 57.

[0079] The upper part of the rocker arm 35 is provided with rocker arm swing parts 46 on both sides, and rocker arm elastic members 44 are provided through the rocker arm swing parts 46; the bracket 33 is provided with a bracket adapter 47; the bracket 33 is provided with a rocker arm pressure block 45, and the rocker arm pressure block 45 is provided with a pressure block adapter 48; the bracket adapter 47 and the pressure block adapter 48 correspond to each other and are respectively semi-circular; the rocker arm swing parts 46 are oscillatingly supported on the bracket adapter 47; the pressure block adapter 48 is limited and pressed on the rocker arm swing parts 46; one end of the rocker arm elastic member 44 elastically acts on the rocker arm swing part 46, and the other end elastically acts on the bracket adapter 47 or the pressure block adapter 48.

[0080] In this embodiment, the rocker arm elastic element 44 generates a reset force on the rocker arm 35, so that the switch contact part 42 always leaves the micro switch 34 without external force; the user can apply force to the rocker arm 35 by using the powder receiving component, thereby driving the rocker arm 35 to overcome the reset force of the rocker arm elastic element 44, and triggering the micro switch 34 through the switch contact part 42.

[0081] The micro switch 34 is fixedly mounted on the rocker arm pressure block 45 or the bracket 33.

[0082] In this embodiment, the rocker arm clamping block 45 can improve the swing stability of the rocker arm 35, thus preventing the rocker arm 35 from becoming loose during swing. Meanwhile, the micro switch 34 can also be fixed to the rocker arm clamping block 45 or the bracket 33 according to production and assembly requirements, facilitating production and assembly.

[0083] The bracket adapter 47 and the pressure block adapter 48 form a circle after they are fitted together. The rocker arm swing part 46 is arc-shaped and can fit with the circular position between the bracket adapter 47 and the pressure block adapter 48, so that the swing of the rocker arm 35 is more stable and smooth.

[0084] The rocker arm elastic element 44 is a torsion spring, and at least two are provided. The at least two rocker arm elastic elements 44 are respectively provided on the rocker arm swing parts 46 on both sides.

[0085] To make the assembly of the rocker arm elastic element 44 more convenient and stable, a rocker arm assembly position 49 is provided on the rocker arm swing part 46; the rocker arm elastic element 44 is positioned and sleeved on the rocker arm swing part 46, and one end of it is assembled and elastically acts on the rocker arm assembly position 49.

[0086] The bracket 33 is fixedly mounted on the gearbox seat 1, and a bracket cavity 50 is formed between the two. The lower end of the bracket cavity 50 is provided with a bracket opening 43. The bracket adapter 47 is provided at the bottom of the bracket cavity 50. The rocker arm pressure block 45 is located inside the bracket cavity 50. The upper part of the rocker arm 35 is located inside the bracket cavity 50. The lower part of the rocker arm 35 is located outside the bracket cavity 50 and is provided with a rocker arm fixing part 51. The bracket 36 is provided with a bracket fixing part 52, and the bracket fixing part 52 is fixedly connected to the rocker arm fixing part 51.

[0087] In this embodiment, during assembly, the rocker arm elastic element 44 is positioned and sleeved on the rocker arm swing part 46, with one end of the rocker arm being fitted and elastically acting on the rocker arm assembly position 49. The rocker arm 35 is placed on the bracket cavity 50 from top to bottom, and the lower part of the rocker arm 35 extends from the bracket opening 43 to the lower end of the bracket 33. The upper part of the rocker arm 35 is oscillating and supported on the bracket transition part 47 through the rocker arm swing part 46. The rocker arm pressure block 45 is fixed in the bracket cavity 50 from top to bottom, and its pressure block transition part 48 is limited and pressed on the rocker arm swing part 46. One end of the rocker arm elastic element 44 elastically acts on the bracket transition part 47.

[0088] The inner wall of the adjusting plate 3 is provided with an adjusting plate drive part 18; the outer periphery of the toothed plate 2 is provided with a toothed plate drive mating part 19, and the bottom is provided with a support positioning part 11; the adjusting plate 3 drives the toothed plate 2 to rotate on the gearbox seat 1 through the cooperation of the adjusting plate drive part 18 and the toothed plate drive mating part 19. When the adjusting plate 3 rotates within a certain angle range, it realizes the lifting and lowering adjustment of the stationary knife 5. When it rotates outside a certain angle range, it realizes the initial position adjustment of the toothed plate 2.

[0089] In this embodiment, the adjustment plate driving part 18 and the toothed plate driving mating part 19 are used to enable the adjustment plate 3 to drive the toothed plate 2 to rotate on the gearbox seat 1.

[0090] The gearbox base 1 is provided with an assembly hole, and an elastic positioning element 22 and a positioning elastic element 24 are provided in the assembly hole. The elastic positioning element 22 elastically expands and contracts on the assembly hole through the positioning elastic element 24. The support positioning part 11 is elastically positioned and engaged with the elastic positioning element 22 when the gear plate 2 rotates.

[0091] The upper part of the elastic positioning member 22 extends at least partially out of the mounting hole 23, and the lower part is elastically connected to the positioning elastic member 24; the elastic positioning member 22 elastically expands and contracts on the mounting hole 23 through the positioning elastic member 24, and is elastically positioned and engaged with the support positioning part 11.

[0092] When the toothed plate 2 rotates, it can achieve elastic positioning by using the support positioning part 11 and the elastic positioning part 22, thereby effectively avoiding the problem of toothed plate 2 dislodging or displacement after rotation. This makes the rotation position of toothed plate 2 more accurate, and also makes toothed plate 2 generate slight vibration and sound when rotating, thereby improving the rotation feel and experience of toothed plate 2, making it highly practical.

[0093] The adjusting plate 3 is circular with its upper and lower ends connected. The adjusting plate 3 is rotatably mounted on the gearbox seat 1. When it rotates within a certain angle range, it realizes the lifting and lowering adjustment of the stationary knife 5. When it rotates outside a certain angle range, it realizes the initial position adjustment of the toothed plate 2.

[0094] This embodiment can utilize the rotation of the adjusting plate 3 within different angle ranges to achieve the initial position adjustment of the toothed plate 2 at the factory and the lifting position adjustment of the stationary knife 5. It has multiple functions and a simple structure.

[0095] The angle range is 0-210 degrees.

[0096] In this embodiment, when the adjusting plate 3 rotates within the range of 0-210 degrees, the initial position of the toothed plate 2 at the factory can be adjusted. When the adjusting plate 3 rotates outside the range of 0-210 degrees (i.e., 210-360 degrees), the lifting position of the stationary blade 5 can be adjusted. Alternatively, when the adjusting plate 3 rotates within the range of 0-210 degrees, the lifting position of the stationary blade 5 can be adjusted. When the adjusting plate 3 rotates outside the range of 0-210 degrees (i.e., 210-360 degrees), the initial position of the toothed plate 2 at the factory can be adjusted.

[0097] The toothed plate 2 is annular and its upper and lower ends are through-through; the toothed plate drive mating part 19 is a toothed ring and is disposed on the outer wall of the toothed plate 2; the support and positioning part 11 is annular tooth and is disposed at the bottom of the toothed plate 2.

[0098] The adjusting plate 3 is circular and its upper and lower ends are through; the adjusting plate driving part 18 is a protrusion and there are several of them, and the several adjusting plate driving parts 18 are arranged in a circular interval along the inner wall of the adjusting plate 3.

[0099] In this embodiment, since there are several adjustment plate drive units 18, the several adjustment plate drive units 18 can respectively mesh with the toothed plate drive mating unit 19, which can reduce production costs and improve the driving stability between the toothed plate 2 and the adjustment plate 3.

[0100] The elastic positioning element 22 is provided with a sleeved step portion. During assembly, the positioning elastic element 24 is sleeved on the sleeved step portion, with one end elastically acting on the assembly hole 23 and the other end elastically acting on the elastic positioning element 22, so that the elastic positioning element 22 can elastically expand and contract on the assembly hole 23, and elastically position and cooperate with the support positioning part 11 during elastic expansion and contraction. The upper end of the elastic positioning element 22 is arc-shaped, and its arc-shaped elastic contact with the support positioning part 11 reduces wear between the elastic positioning element 22 and the support positioning part 11.

[0101] The outer wall of the positioning ring 10 is provided with an anti-detachment part 25; the tooth plate 2 is supported on the gearbox seat 1 by the support positioning part 11 and is anti-detached in cooperation with the anti-detachment part 25, and is positioned and rotated outside the positioning ring 10.

[0102] In this embodiment, the toothed plate 2 can be positioned and rotated on the gearbox seat 1 through the cooperation between the support positioning part 11 and the positioning ring 10, so as to ensure that the toothed plate 2 can rotate stably and drive the lifting plate 4 to lift. The anti-detachment part 25 is a buckle, which can be engaged with the inner side of the support positioning part 11 to prevent the toothed plate 2 from detaching from the gearbox seat 1.

[0103] The lifting plate 4 is circular and its upper and lower ends are through. At least part of the bottom of the lifting plate 4 extends into the positioning ring 10. The outer wall of the lifting plate 4 is provided with a threaded engagement part 21. The inner wall of the toothed plate 2 is provided with a toothed plate thread 20. When the toothed plate 2 rotates, it is threadedly driven to connect with the threaded engagement part 21 through the toothed plate thread 20, so as to drive the lifting plate 4 to lift and rotate within the positioning ring 10.

[0104] In this embodiment, since the bottom of the lifting plate 4 extends into the positioning ring 10 at least partially, the lifting plate 4 can achieve positioning rotation and guiding lifting on the gearbox seat 1, so as to ensure that the lifting plate 4 and the stationary knife 5 will not have displacement or tilting problems during lifting.

[0105] The adjusting plate 3 is also equipped with a bean hopper assembly, which includes a hopper cover 68, a bean hopper base 69, a cap 70, planetary gears 71, a hopper door 72, a rotating ring 73, and a fixing ring 74. The hopper cover 68 is detachable from the bean hopper base 69. The cap 70 is located inside the bean hopper base 69 and forms a bean outlet gap with the bean outlet 75 of the bean hopper base 69. The hopper door 72 has several door baffles 76 arranged on it, and a door tooth portion 77 is provided on its periphery. The fixing ring 74 and the rotating ring 72 are also included. 3. The bean hopper seats 69 are fixedly connected to each other and form a rotating drive part 78; the inner wall of the rotating ring 73 is provided with a section of rotating teeth 79; the planetary teeth 71 are located between the hopper door 72 and the rotating ring 73, and are engaged with the hopper door teeth 77 and the rotating teeth 79 to realize the rotational linkage between the hopper door 72 and the rotating ring 73. When the hopper door 72 rotates, the hopper door baffle 76 opens and closes the bean outlet 75 and adjusts the opening size of the bean outlet 75.

[0106] The use of the bean silo component is the same as existing technology, and will not be described in detail here.

[0107] The adjustment plate 3 is provided with an adjustment drive engagement part 26; the bean hopper assembly is installed on the adjustment plate 3 and is driven to connect with the adjustment drive engagement part 26 by the rotation drive part 78 during assembly.

[0108] The gearbox mount 1 is equipped with a detection switch 80 for the installation and removal of the bean hopper assembly. The detection switch 80 is a switch-type switch used to detect whether the bean hopper assembly is properly installed. If the bean hopper assembly is not installed on the adjustment plate 3, the detection switch 80 will stop the coffee machine from operating. If the bean hopper assembly is installed on the adjustment plate 3, the detection switch 80 will allow the coffee machine to operate. The detection switch 80 is fixed to the gearbox mount 1 with fasteners and is located on one side of the adjustment plate 3.

[0109] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as defined by the appended claims and their equivalents.

Claims

1. A grinding mechanism for a coffee machine, comprising a gearbox base (1), and a sharpening assembly, a driving assembly, a blade adjusting assembly, and a powder dispensing assembly disposed on the gearbox base (1), characterized in that: The tool adjusting assembly includes a toothed plate (2), an adjusting plate (3), and a lifting plate (4) that are rotatably driven together; the tool sharpening assembly includes a stationary blade (5), which is detachably placed on the lifting plate (4); a lifting area (X) is formed between the toothed plate (2) and the lifting plate (4); the adjusting plate (3), the lifting plate (4), and the gearbox seat (1) cooperate with each other and shield the position between the lifting area (X) and the tool sharpening assembly; The toothed plate (2) can be adjusted to its initial position and / or the stationary cutter (5) can be adjusted to rise and fall when it rotates. The gearbox seat (1) has a gearbox seat powder outlet (30) on its side wall, and a powder channel cover (31) is installed on the gearbox seat powder outlet (30). The powder dispensing component includes a micro switch (34) and a rocker arm (35); the micro switch (34) is electrically connected to the drive component; a powder receiving component is placed on the rocker arm (35), and the powder receiving component drives the rocker arm (35) to swing elastically and triggers or leaves the micro switch (34). The adjusting plate (3) is provided with an adjusting stop (6), and the adjusting stop (6) is provided with an annular stop (7); the bottom surface of the adjusting stop (6) is supported on the toothed plate (2) and covers the lifting plate (4); the annular stop (7) extends into the lifting plate (4); the adjusting stop (6), the annular stop (7), and the lifting plate (4) cooperate with each other to cover the upper position between the lifting area (X) and the grinding tool assembly; The lifting plate (4) is provided with a lifting stop (8); the gearbox seat (1) is provided with a gearbox seat opening (9); the gearbox seat opening (9) has a positioning ring (10) protruding upward; the lifting stop (8) extends into the positioning ring (10) and is lifted and rotated within the positioning ring (10); the lifting stop (8) and the positioning ring (10) cooperate with each other to block the middle and lower positions between the lifting area (X) and the grinding tool assembly.

2. The grinding mechanism of the coffee machine according to claim 1, characterized in that: The lifting plate (4) is provided with a support step (12); the stationary knife (5) is provided with a stationary knife holder (13), which can be detachably positioned on the support step (12); the grinding assembly also includes a conical knife (14); the driving assembly is driven to the conical knife (14); the conical knife (14) rotates within the stationary knife (5) by the driving of the driving assembly.

3. The grinding mechanism of the coffee machine according to claim 2, characterized in that: The gearbox base (1) is provided with a gearbox cavity (60) and a grinding cavity (61); the upper end of the gearbox cavity (60) is connected to the grinding cavity (61), and the lower end is open and fixed with a gearbox base plate (62); the upper end of the grinding cavity (61) is provided with a gearbox base opening (9); the driving assembly includes a driver (63), a transmission gear set (64), a drive shaft (65), and a powder-removing wheel (66); the stationary knife (5), the conical knife (14), and the powder-removing wheel (66) are located in the grinding cavity (61). 1) Inside; the upper part of the drive shaft (65) is located inside the grinding chamber (61) and is driven connected to the conical cutter (14) and the powder wheel (66); the lower part of the drive shaft (65) is located inside the gearbox cavity (60) and is driven connected to the transmission gear set (64); the driver (63) is fixed on the gearbox base plate (62) and its power output end is driven connected to a screw (67); the screw (67) extends into the gearbox cavity (60) and is driven connected to the transmission gear set (64).

4. The grinding mechanism of the coffee machine according to claim 3, characterized in that: The grinding chamber (61) has a powder outlet (30) on its side wall; the powder wheel (66) is located on one side of the powder outlet (30) of the gearbox; the powder channel cover (31) has a plug-in positioning part (53) and a powder channel cover snap-fit ​​part (54); the outer wall of the gearbox (1) has a plug-in mating part (55) and a snap-fit ​​mating part (56); the powder channel cover (31) is detachably plugged into the plug-in mating part (55) through the plug-in positioning part (53), and through the... The powder channel cover snap-fit ​​part (54) is detachably snapped onto the snap-fit ​​mating part (56). When the powder channel cover (31) is assembled, it covers the powder outlet (30) of the gearbox seat and forms an upper powder outlet channel (32) between it and the outer wall of the gearbox seat (1). The powder outlet assembly also includes a bracket (33), which is fixed on the gearbox seat (1) and has a lower powder outlet channel (57) on its side wall. The lower powder outlet channel (57) is connected to the upper powder outlet channel (32).

5. The grinding mechanism of the coffee machine according to claim 1, characterized in that: The powder dispensing assembly also includes a bracket (33), which is fixed on the gearbox seat (1); the powder receiving assembly includes a powder receiving funnel (37) and a handle (38) that is connected to the powder receiving funnel (37); a switch contact part (42) is provided on the rocker arm (35), which is located on the upper rear side of the rocker arm (35); a bracket (36) is fixed on the lower front side of the rocker arm (35), and a bracket action part (40) is provided thereon; a funnel protrusion (39) is provided on the powder receiving funnel (37). The powder receiving funnel (37) is placed on the bracket (36), and when the handle (38) moves downward, it exerts a force on the rocker arm (35) through the cooperation between the funnel protrusion (39) and the bracket action part (40). The rocker arm (35) swings on the support (33) by the force. The switch contact part (42) moves upward with the swing position of the rocker arm (35) as the lever point and triggers the micro switch (34).

6. The grinding mechanism of the coffee machine according to claim 5, characterized in that: The upper sides of the rocker arm (35) are respectively provided with rocker arm swing parts (46), and rocker arm elastic members (44) are provided through the rocker arm swing parts (46); the bracket (33) is provided with a bracket adapter part (47); the bracket (33) is provided with a rocker arm pressure block (45), and the rocker arm pressure block (45) is provided with a pressure block adapter part (48); the bracket adapter part (47) and the pressure block adapter part (48) correspond to each other and are respectively arranged in a semi-circular shape; the rocker arm swing part (46) swings and is supported on the bracket adapter part (47); the pressure block adapter part (48) is limited and pressed on the rocker arm swing part (46); one end of the rocker arm elastic member (44) acts elastically on the rocker arm swing part (46), and the other end acts elastically on the bracket adapter part (47) or the pressure block adapter part (48).

7. The grinding mechanism of the coffee machine according to claim 1, characterized in that: The inner wall of the adjusting plate (3) is provided with an adjusting plate driving part (18); the outer periphery of the toothed plate (2) is provided with a toothed plate driving mating part (19), and the bottom is provided with a supporting positioning part (11); the adjusting plate (3) drives the toothed plate (2) to rotate on the gearbox seat (1) through the cooperation of the adjusting plate driving part (18) and the toothed plate driving mating part (19). When the adjusting plate (3) rotates within a certain angle range, the stationary knife (5) is adjusted in height. When it rotates outside a certain angle range, the initial position of the toothed plate (2) is adjusted. The gearbox seat (1) is provided with an assembly hole, and an elastic positioning element (22) and a positioning elastic element (24) are provided in the assembly hole. The elastic positioning element (22) elastically extends and retracts on the assembly hole through the positioning elastic element (24). The support positioning part (11) elastically positions and cooperates with the elastic positioning element (22) when the tooth plate (2) rotates.

8. The grinding mechanism of the coffee machine according to claim 1, characterized in that: The adjusting plate (3) is also provided with a bean hopper assembly, which includes a hopper cover (68), a bean hopper base (69), a cap (70), planetary gears (71), a hopper door (72), a rotating ring (73), and a fixing ring (74); the hopper cover (68) is detachable from the bean hopper base (69); the cap (70) is located inside the bean hopper base (69) and forms a bean outlet gap with the bean outlet (75) of the bean hopper base (69); the hopper door (72) is arrayed with several hopper door baffles (76), and the outer periphery is provided with hopper door teeth (77); the fixing ring (74) and the rotating ring are also provided with a bean hopper base (69). (73) The bean hopper seats (69) are fixedly connected to each other and form a rotating drive part (78); the inner wall of the rotating ring (73) is provided with a section of rotating teeth (79); the planetary teeth (71) are respectively located between the hopper door (72) and the rotating ring (73), and are engaged with the hopper door teeth (77) and the rotating teeth (79) to realize the rotational linkage between the hopper door (72) and the rotating ring (73). When the hopper door (72) rotates, it opens and closes the bean outlet (75) and adjusts the opening size of the bean outlet (75) through the hopper door baffle (76); The adjustment plate (3) is provided with an adjustment drive engagement part (26); the bean hopper assembly is disassembled and mounted on the adjustment plate (3), and is driven to connect with the adjustment drive engagement part (26) by a rotation drive part (78) during assembly; The gearbox mount (1) is also equipped with a detection switch (80) for the disassembly and assembly of the bean hopper assembly.

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