Coffee bean grinding structure and coffee maker

Abstract

The utility model relates to a coffee bean grinding structure and coffee machine, including grinder, the grinder inside has the grinding cavity and is provided with the powder outlet that communicates with the grinding cavity, still include: baffle, activity sets up on the grinder, and initial state under the shielding powder outlet, moving piece has the top holding part, initial state, moves to the top holding part and the baffle abuts and pushes the baffle to separate the powder outlet, and can position the baffle in the state that completely separates the powder outlet, elastic piece, in the state that the baffle separates the powder outlet and the moving piece moves to its top holding part and the baffle abut, makes the baffle have the tendency of shielding the powder outlet. Compared with prior art, on the basis of guaranteeing that the grinding cavity passes through the powder outlet and comes out powder smoothly, the baffle shielding powder outlet can avoid that water vapor passes through the powder outlet and enters the grinding cavity inside.

Description

Technical Field

[0001] This utility model relates to the field of coffee machines, and in particular to a coffee bean grinding structure and a coffee machine. Background Technology

[0002] A coffee grinder begins coffee making by grinding coffee beans, and its general workflow is as follows: The user adds water to the water tank, puts coffee beans into the bean hopper, places the cup at the machine's dispensing spout, and then selects the appropriate brewing program. The machine starts grinding the coffee beans according to the preset program, grinding them into a powder suitable for brewing. The ground coffee powder is then conveyed to the filter in the brewing unit. The tamper activates, pressing down to compact the coffee powder into a puck, ensuring even water flow. The heater heats the water to the set temperature (usually between 90°C and 96°C), and the pump delivers the heated water at high pressure (usually around 9 bar) to the brewing unit. The high-pressure hot water passes through the coffee powder in the brewing unit, the water flow rapidly through the coffee powder in a short time, extracting the coffee liquid. The extracted coffee liquid passes through the filter to remove the coffee grounds before flowing into the coffee cup. After brewing, the machine's tamper retracts and automatically collects any remaining coffee grounds into the grounds container. For example, Chinese invention patent with application number CN202510493481.2 (publication number CN120078257A) and Chinese invention patent with application number CN202410542675.2 (publication number CN118266753A).

[0003] However, the coffee-making process requires the use of high-temperature water. During the extraction process, the high-temperature water vapor easily evaporates. At the same time, after the coffee is extracted and the water pump stops working, there is a residual coffee liquid between the coffee puck and the coffee outlet, which will flow back into the coffee puck. The coffee puck, which is in a high-temperature and high-humidity state, will release a large amount of water vapor after the tamping device returns to its original position. This water vapor will directly enter the upper powder outlet channel and the inside of the grinding chamber, causing the residual powder in the powder outlet channel and the grinding chamber to clump together. When too much clumps are formed, it is easy to cause the powder weight to be inconsistent each time coffee is made, affecting the consistency of coffee quality. Summary of the Invention

[0004] The first technical problem to be solved by this utility model is to provide a coffee bean grinding structure that can prevent water vapor from entering the grinding chamber, in contrast to the prior art.

[0005] The second technical problem to be solved by this utility model is to provide a coffee bean grinding structure that can prevent water vapor from entering the grinding chamber and has a simple structure, in contrast to the prior art.

[0006] The third technical problem to be solved by this utility model is to provide a coffee machine with the aforementioned coffee bean grinding structure, in contrast to the prior art.

[0007] The technical solution adopted by this utility model to solve at least one of the above-mentioned technical problems is as follows: a coffee bean grinding structure, including a grinder, the grinder having a grinding chamber inside and a powder outlet communicating with the grinding chamber, characterized in that it further includes:

[0008] A baffle is movably mounted on the grinder and initially blocks the powder outlet.

[0009] The movable part has a top holding part. In the initial state, it moves until the top holding part abuts against the baffle and pushes the baffle away from the powder outlet, and can position the baffle in a state where it is completely separated from the powder outlet.

[0010] The elastic member, when the baffle is disengaged from the powder outlet and the moving member has moved to the point where its top holding part is disengaged from the baffle, causes the baffle to tend to cover the powder outlet.

[0011] Furthermore, the baffle is vertically slidable at the powder outlet, and the moving part is vertically positioned and is a rotating block capable of rotating around its own axis.

[0012] Furthermore, the top of the movable component has a circular rib centered on its own axis. This rib is recessed to form a groove. Along the rotation direction of the movable component, this groove is smoothly connected to the first end of the rib via a first side groove wall that slopes upwards towards the first end of the rib. This first side groove wall and the rib constitute the top holding portion, and the baffle has a functional portion.

[0013] In the initial state, the actuating part is confined within the groove. When the moving member rotates, it drives the actuating part to move upward along the first side groove wall, thereby causing the baffle to move upward relative to the powder outlet. This continues until the actuating part moves to the rib and moves circumferentially along the rib. The baffle then completely disengages from the powder outlet and is confined in this state until the actuating part falls back into the groove. By slidably aligning the baffle vertically up and down at the powder outlet, the opening and closing control of the powder outlet by the baffle is facilitated. Furthermore, the moving member is preferably a rotating block capable of rotating around its own axis, facilitating movement control of the moving member. In the initial state, the actuating part being confined within the groove helps the baffle stably shield the powder outlet, ensuring the reliability of the powder outlet closing action. As the moving part rotates, the actuating part moves along the first side wall of the groove and slides out of the groove. Simultaneously, the baffle is lifted and moves upward relative to the powder outlet until the actuating part moves to the rib, at which point the baffle and the powder outlet are completely offset vertically, and the powder outlet is fully opened. The actuating part moves along the length of the rib as the moving part rotates, and the baffle is limited to the fully open state of the powder outlet to ensure smooth coffee powder output until the actuating part falls back into the groove. Under the elastic force of the elastic element and its own weight, the baffle then covers the powder outlet again. Therefore, the moving part in this invention has a simple structure; its rotation alone can control the baffle, thereby controlling the opening and closing of the powder outlet.

[0014] Furthermore, the movable component is disposed on one side of the baffle, and its shape is cylindrical. The edge of its top surface extends vertically upward along the circumferential direction to form the rib. The second end of the rib is smoothly connected to the second side wall of the groove, and the second side wall is inclined from bottom to top towards the second end of the rib. The actuating part is a limiting rod protruding horizontally on one side of the baffle. This simplifies the structure of the movable component and allows for a better forming of the top holding part. The design of the second side wall of the groove and the actuating part moving along the length of the rib returning to the groove facilitate better cyclic control of the powder outlet opening and closing. Simultaneously, specifically setting the actuating part as a limiting rod simplifies the structure of the baffle and allows the actuating part to move more smoothly along the rib and the side walls of the groove, thus enabling the baffle to move smoothly up and down relative to the powder outlet.

[0015] Furthermore, the grinder also includes a movable blade rotatably disposed in the grinding chamber, a drive motor, and a transmission mechanism for simultaneously transmitting the power output by the drive motor to the movable blade and the moving component. In this way, the moving component and the movable blade share the same drive motor, eliminating the need for a separate drive device to rotate the moving component. Moreover, the same transmission mechanism can transmit the power output by the drive motor to both the moving component and the movable blade, thereby simplifying the internal structure of the coffee bean grinding mechanism.

[0016] Furthermore, the transmission mechanism includes a screw mounted on the output shaft of the drive motor, a first transmission gear, and a second transmission gear. The moving part has a central hole and is coaxially arranged with the first transmission gear, while the second transmission gear is coaxially arranged with the moving blade. The first transmission gear is a double gear; the first gear meshes with the screw, and the second gear meshes with the second transmission gear. Thus, the drive motor operates, causing the screw to rotate. The screw, through the first gear, drives the first transmission gear to rotate. The rotating first transmission gear, on the one hand, drives the moving part to rotate synchronously, and on the other hand, drives the moving blade to rotate through the second transmission gear, ultimately achieving joint driving of both the moving part and the moving blade.

[0017] Furthermore, a horizontally extending, square-cross-section powder outlet sleeve is fixed to the outer surface of the grinder at the powder outlet. The inner cavity of the powder outlet sleeve forms a powder outlet channel, and the top wall of the powder outlet sleeve has an insertion port that matches the baffle. The baffle is inserted into the insertion port, which can move up and down relative to the edge of the insertion port. A limiting protrusion is provided on the top of the baffle along its length. In the initial state, the baffle is positioned in the powder outlet sleeve, and the limiting protrusion abuts against the upper edge of the insertion port circumferentially. By setting the powder outlet sleeve to form a powder outlet channel, it is easier to discharge coffee powder from the powder outlet into the grinding chamber. Furthermore, the up and down movement of the baffle relative to the insertion port of the powder outlet sleeve can realize the opening and closing control of the powder outlet channel, thereby realizing the opening and closing control of the powder outlet. In addition, the limiting protrusion can limit the baffle to the state of blocking the powder outlet channel, further ensuring the reliability of the powder outlet closing action.

[0018] Furthermore, the actuating part is formed by extending outward in a horizontal direction from one end of the limiting protrusion. This eliminates the need to create a hole in the powder outlet channel for the actuating part to pass through and move vertically, which not only simplifies the structure of the powder outlet sleeve but also helps to ensure the sealing of the powder outlet channel.

[0019] Furthermore, the powder outlet sleeve is provided with a guide channel that is vertically aligned with the insertion port and extends vertically, and the limiting protrusion is slidably installed in the guide channel.

[0020] Furthermore, the elastic element is a vertically arranged return spring. The upper end of the return spring is connected to the top wall of the guide channel, and the lower end is connected to the limiting protrusion. A guide opening extending along its height direction is provided on one side of the guide channel. The aforementioned actuating part is inserted into the guide opening and can move back and forth along the guide opening. By setting up the guide channel, and utilizing the guiding cooperation between the limiting protrusion and the guide channel, as well as the guiding cooperation between the actuating part and the guide opening, the baffle can move up and down more smoothly. This helps to further ensure the reliability of the baffle's control over the opening and closing of the powder outlet. Moreover, through the design of the specific structure and installation method of the elastic element, the elastic element can better act on the baffle, so that the baffle can better move down and reset to close the powder outlet again.

[0021] Furthermore, an inverted U-shaped block is installed on the top surface of the powder dispensing sleeve directly above the insertion port. The inner cavity of the U-shaped block forms the guide channel, while its opening on one side forms the guide port. This facilitates the design of a guide channel on the powder dispensing sleeve and also simplifies the structure of the coffee bean grinding mechanism.

[0022] The technical solution adopted to further solve the third technical problem mentioned above is: a coffee machine, characterized in that it includes a coffee bean grinding structure as described above.

[0023] Compared with the prior art, the advantages of this utility model are as follows: the coffee powder ground in the grinding chamber is output through the powder outlet. This utility model is equipped with a baffle, a moving part, and an elastic part. In the initial state, the baffle covers the powder outlet, thereby closing the powder outlet and preventing water vapor from entering the grinding chamber through the powder outlet. At the same time, the moving part can push the baffle away from the powder outlet through its top holding part in the initial state to open the powder outlet, so as to ensure that the coffee powder in the grinding chamber can be output smoothly through the powder outlet. Furthermore, when the powder outlet is open and the top holding part of the moving part is disengaged from the baffle, the elastic part can release its elastic force to make the baffle automatically reset and cover the powder outlet again, thereby realizing the automatic closure of the powder outlet and helping to improve the reliability of the opening and closing control of the powder outlet. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the coffee machine in an embodiment of the present invention;

[0025] Figure 2 This is a cross-sectional view of the coffee machine in an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of section A;

[0027] Figure 4 This is a partial structural diagram of the coffee machine in an embodiment of the present utility model;

[0028] Figure 5 This is an exploded view of a portion of the coffee machine in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the U-shaped block in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the moving part in an embodiment of this utility model;

[0031] Figure 8 This is a partial cross-sectional view of the coffee machine in an embodiment of the present invention. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0034] like Figures 1-8 As shown, a coffee machine includes a bean hopper 9 and a coffee bean grinding structure disposed below the bean hopper 9. The coffee bean grinding structure includes a grinder 1, which has a grinding chamber 10 inside and a powder outlet 101 communicating with the grinding chamber 10.

[0035] Furthermore, it also includes a baffle 2, a movable member 3, and an elastic member 4. The baffle 2 is movably disposed on the grinder 1 and initially covers the powder outlet 101. The movable member 3 has a supporting portion 31. Initially, the movable member 3 moves until its supporting portion 31 abuts against the baffle 2, pushing the baffle 2 away from the powder outlet 101, and can position the baffle 2 completely detached from the powder outlet 101. The elastic member 4, when the baffle 2 is detached from the powder outlet 101 and the movable member 3 has moved until its supporting portion 31 is detached from the baffle 2, causes the baffle 2 to tend to cover the powder outlet 101.

[0036] As can be seen from the above, the ground coffee powder in the grinding chamber 10 is output through the powder outlet 101. This utility model is equipped with a baffle 2, a moving part 3, and an elastic part 4. In the initial state, the baffle 2 covers the powder outlet 101, thereby closing the powder outlet 101 and preventing water vapor from entering the grinding chamber 10 through the powder outlet 101. At the same time, the moving part 3 can push the baffle 2 away from the powder outlet 101 through its top holding part 31 in the initial state, thereby opening the powder outlet 101 to ensure that the coffee powder in the grinding chamber 10 can be smoothly output through the powder outlet 101. Furthermore, when the powder outlet 101 is open and the top holding part 31 of the moving part 3 is disengaged from the baffle 2, the elastic part 4 can release its elastic force to automatically reset the baffle 2 and cover the powder outlet 101 again, thereby achieving automatic closure of the powder outlet 101 and helping to improve the reliability of the opening and closing control of the powder outlet 101.

[0037] Preferably, such as Figure 3 As shown, the baffle 2 is vertically slidable at the powder outlet 101, and the moving member 3 is vertically positioned and is a rotating block capable of rotating about its own axis. Furthermore, as... Figure 7 As shown, the top of the movable member 3 has a circular rib 311 centered on its own axis, and the rib 311 is recessed to form a groove 32. Along the rotation direction of the movable member 3, the groove 32 and the first end of the rib 311 are smoothly connected by a first side groove wall 321 that slopes upwards towards the first end of the rib 311. The first side groove wall 321 and the rib 311 constitute the aforementioned supporting portion 31, and the aforementioned baffle 2 has a functional portion 21. In the initial state, the functional portion 21 is confined within the groove 32 (e.g., ...). Figure 1As shown, when the moving part 3 rotates, it drives the actuating part 21 to move upward along the first side groove wall 321, thereby driving the baffle 2 to move upward relative to the powder outlet 101. This continues until the actuating part 21 moves to the protruding rib 311 and moves circumferentially along the rib 311. The baffle 2 then completely disengages from the powder outlet 101 and is limited to this state until the actuating part 21 falls back into the groove 32. By slidably aligning the baffle 2 vertically up and down at the powder outlet 101, the opening and closing control of the powder outlet 101 by the baffle 2 is facilitated. Furthermore, the moving part 3 is preferably a rotating block that can rotate around its own axis, facilitating movement control of the moving part 3. In the initial state, the actuating part 21 is limited in the groove 32, which helps the baffle 2 to stably cover the powder outlet 101, ensuring the reliability of the powder outlet 101's closing action. As the moving part 3 rotates, the actuating part 21 moves along the first side wall 321 of the groove 32 and slides out of the groove 32. At the same time, the baffle 2 is lifted and moves upward relative to the powder outlet 101 until the actuating part 21 moves to the rib 311. The baffle 2 and the powder outlet 101 are completely offset vertically, and the powder outlet 101 is fully opened. As the moving part 3 rotates, the actuating part 21 moves along the length direction of the rib 311. The baffle 2 is limited to the fully open state of the powder outlet 101 to ensure that coffee powder can be output smoothly until the actuating part 21 falls back into the groove 32. Under the elastic force of the elastic member 4 and its own weight, the baffle 2 covers the powder outlet 101 again. It can be seen that the moving part 3 in this utility model has a simple structure. It can control the baffle 2 by rotating itself, and then realize the opening and closing control of the powder outlet 101.

[0038] Furthermore, such as Figure 1 , Figure 3 as well as Figure 7 As shown, the movable member 3 is disposed on one side of the baffle 2, and the movable member 3 is cylindrical in shape. The edge of its top surface extends vertically upward along the circumferential direction to form the rib 311. The second end of the rib 311 is smoothly connected to the second side wall 322 of the groove 32, and the second side wall 322 is inclined from bottom to top towards the second end of the rib 311. Furthermore, the actuating part 21 is a limiting rod protruding horizontally on one side of the baffle 2. This simplifies the structure of the movable member 3 and allows for a better forming of the top holding part 31 on the movable member 3. By designing the second side wall 322 of the groove 32 and having the actuating part 21, which moves along the length of the rib 311, fall back into the groove 32, it helps to better achieve the cyclic control of the opening and closing of the powder outlet 101. Meanwhile, the action part 21 is specifically set as a limiting rod, which on the one hand simplifies the structure of the baffle 2, and on the other hand makes the action part 21 move more smoothly along the side walls of the rib 311 and the groove 32, so that the baffle 2 can move up and down smoothly relative to the powder outlet 101.

[0039] Furthermore, the aforementioned grinder 1 also includes a movable blade 11 rotatably disposed in the grinding chamber 10, a drive motor 5, and a transmission mechanism 6 for simultaneously transmitting the power output from the drive motor 5 to the movable blade 11 and the moving member 3. In this way, the moving member 3 and the movable blade 11 share the drive motor 5, eliminating the need for a separate drive device to rotate the moving member 3. Moreover, the same transmission mechanism 6 can transmit the power output from the drive motor 5 to both the moving member 3 and the movable blade 11, thereby simplifying the internal structure of the coffee bean grinding mechanism. In addition, as... Figure 8 As shown, in this embodiment, a fixed blade 12 is also provided in the grinding chamber 10, which is arranged circumferentially with the moving blade 11 as the center.

[0040] Specifically, such as Figure 4 As shown, the transmission mechanism 6 includes a screw 61, a first transmission gear 62, and a second transmission gear 63 mounted on the output shaft of the drive motor 5. The moving part 3 has a central hole and is coaxially arranged with the first transmission gear 62, while the second transmission gear 63 is coaxially arranged with the moving blade 11. The first transmission gear 62 is a double gear, with the first gear 621 meshing with the screw 61 and the second gear 622 meshing with the second transmission gear 63. Thus, the drive motor 5 operates, causing the screw 61 to rotate. The screw 61, through the first gear 621, drives the first transmission gear 62 to rotate. The rotating first transmission gear 62, on the one hand, drives the moving part 3 to rotate synchronously, and on the other hand, drives the moving blade 11 to rotate through the second transmission gear 63, ultimately achieving joint driving of the moving part 3 and the moving blade 11.

[0041] like Figure 1 , Figure 5 as well as Figure 8 As shown, a horizontally extending powder outlet sleeve 7 with a square cross-section is fixed to the outer surface of the grinder 1 at the powder outlet 101. The inner cavity of the powder outlet sleeve 7 forms a powder outlet channel 70, and the top wall of the powder outlet sleeve 7 has an insertion port 71 that matches the baffle 2. The baffle 2 is inserted into the insertion port 71, which can move up and down relative to the edge of the insertion port 71. The top of the baffle 2 has a limiting protrusion 22 protruding along its own length. In the initial state, the baffle 2 is spaced in the powder outlet sleeve 7, and the limiting protrusion 22 abuts against the upper edge of the insertion port 71 along the circumferential direction. Figure 8 As shown. The formation of a powder outlet channel 70 by setting the powder outlet sleeve 7 helps to better guide coffee powder out of the grinding chamber 10 from the powder outlet 101. Furthermore, the up-and-down movement of the baffle 2 relative to the insertion port 71 of the powder outlet sleeve 7 enables control of the opening and closing of the powder outlet 101. In addition, the limiting protrusion 22 can limit the baffle 2 to a state that blocks the powder outlet channel 70, further ensuring the reliability of the closing action of the powder outlet 101. Preferably, as... Figure 3As shown, the aforementioned functional part 21 is formed by extending outward in a horizontal direction from one end of the aforementioned limiting protrusion 22. This eliminates the need to open a hole in the powder outlet channel 70 for the functional part 21 to pass through and move vertically, which not only simplifies the structure of the powder outlet sleeve 7 but also helps to ensure the sealing of the powder outlet channel 70.

[0042] like Figure 3 As shown, the powder outlet sleeve 7 is provided with a guide channel 80 that is vertically aligned with and extends from the insertion port 71. The limiting protrusion 22 is slidably installed in the guide channel 80 (e.g., Figure 8 (As shown). Furthermore, the aforementioned elastic element 4 is a vertically arranged return spring. The upper end of the return spring is connected to the top wall of the aforementioned guide channel 80, and the lower end is connected to the aforementioned limiting protrusion 22. A guide opening 801 extending along its own height direction is provided on one side of the guide channel 80. The aforementioned actuating part 21 is inserted into the guide opening 801 and can move up and down along the guide opening 801. By setting the guide channel 80, utilizing the guiding cooperation between the limiting protrusion 22 and the guide channel 80, and the guiding cooperation between the actuating part 21 and the guide opening 801, the baffle 2 can move up and down more smoothly. This helps to further ensure the reliability of the baffle 2's control over the opening and closing of the powder outlet 101. Moreover, through the design of the specific structure and installation method of the elastic element 4, the elastic element 4 can better act on the baffle 2, so that the baffle 2 can better move down and reset, thus re-closing the powder outlet 101.

[0043] Specifically, such as Figure 3 and Figure 5 As shown, an inverted U-shaped block 8 is installed on the top surface of the powder dispensing sleeve 7 directly above the insertion port. The inner cavity of the U-shaped block 8 forms the guide channel 80, and its opening on one side forms the guide port 801. This facilitates the design of the guide channel 80 on the powder dispensing sleeve 7 and also simplifies the structure of the coffee bean grinding structure. In this embodiment, the U-shaped block 8 is detachably mounted on the powder dispensing sleeve 7. Specifically, a snap-fit ​​block 81 protrudes from the outer sides of both sides of the U-shaped block 8, and vertically extending connecting blocks 72 protrude from both sides of the powder dispensing sleeve 7. The top of each connecting block 72 has a snap-fit ​​hole 721 for the corresponding snap-fit ​​block 81 to engage. Figure 5 and Figure 6 As shown. Furthermore, in this embodiment, the inner top surfaces of the aforementioned limiting protrusion 22 and the U-shaped block 8 are respectively provided with mounting grooves 41 for the corresponding ends of the elastic element 4 to be engaged, as shown. Figure 5 and Figure 6 As shown.

Claims

1. A coffee bean grinding structure, comprising a grinder (1), the grinder (1) having a grinding chamber (10) and a powder outlet (101) communicating with the grinding chamber (10), characterized in that, Also includes: A baffle (2) is movably disposed on the grinder (1) and initially blocks the powder outlet (101); The movable part (3) has a top holding part (31). In the initial state, it moves to the point where the top holding part (31) abuts against the baffle (2) and pushes the baffle (2) away from the powder outlet (101), and can position the baffle (2) in a state where it is completely away from the powder outlet (101). The elastic member (4) tends to cover the powder outlet (101) when the baffle (2) is disengaged from the powder outlet (101) and the moving member (3) moves to the point where its top holding part (31) is disengaged from the baffle (2).

2. The coffee bean grinding structure as described in claim 1, characterized in that, The baffle (2) is vertically slidably disposed at the powder outlet (101), and the moving part (3) is vertically disposed and is a rotating block that can rotate about its own axis. Furthermore, the top of the movable member (3) has a circular rib (311) centered on its own axis. The rib (311) is recessed to form a groove (32). Along the rotation direction of the movable member (3), the groove (32) and the first end of the rib (311) are smoothly connected by a first side groove wall (321) that is inclined from bottom to top toward the first end of the rib (311). The first side groove wall (321) and the rib (311) constitute the top holding part (31), and the baffle (2) has a working part (21). In the initial state, the action part (21) is limited in the groove (32). When the moving part (3) rotates, it drives the action part (21) to move upward along the first side groove wall (321) and drives the baffle (2) to move upward relative to the powder outlet (101) until the action part (21) moves to the rib (311) and moves circumferentially along the rib (311). The baffle (2) is completely separated from the powder outlet (101) and is limited in the state of being completely separated from the powder outlet (101) until the action part (21) falls back into the groove (32).

3. The coffee bean grinding structure as described in claim 2, characterized in that, The movable part (3) is disposed on one side of the baffle (2), and the movable part (3) is cylindrical in shape. The edge of its top surface extends vertically upward along the circumferential direction to form the rib (311). The second end of the rib (311) is smoothly connected to the second side wall (322) of the groove (32), and the second side wall (322) is inclined from bottom to top toward the second end of the rib (311). The actuating part (21) is a limiting rod protruding horizontally on one side of the baffle (2).

4. The coffee bean grinding structure as described in claim 2 or 3, characterized in that, The grinder (1) further includes a movable blade (11) rotatably disposed in the grinding chamber (10), a drive motor (5), and a transmission mechanism (6) for transmitting the power output by the drive motor (5) to the movable blade (11) and the moving part (3) simultaneously.

5. The coffee bean grinding structure as described in claim 4, characterized in that, The transmission mechanism (6) includes a screw (61), a first transmission gear (62), and a second transmission gear (63) mounted on the output shaft of the drive motor (5). The moving part (3) has a central hole (30) and is coaxially arranged with the first transmission gear (62). The second transmission gear (63) is coaxially arranged with the moving blade (11). The first transmission gear (62) is a double gear. The first gear (621) of the double gear meshes with the screw (61), and the second gear (622) meshes with the second transmission gear (63).

6. The coffee bean grinding structure as described in claim 2 or 3, characterized in that, A horizontally extending powder outlet sleeve (7) with a square cross-section is fixed on the outer surface of the grinder (1) at the powder outlet (101). The inner cavity of the powder outlet sleeve (7) forms a powder outlet channel (70), and the top wall of the powder outlet sleeve (7) is provided with an insertion port (71) that matches the baffle (2). The baffle (2) can be inserted into the insertion port (71) by moving up and down relative to the edge of the insertion port (71). The top of the baffle (2) is provided with a limiting protrusion (22) along its own length direction. In the initial state, the baffle (2) is separated in the powder outlet sleeve (7), and the limiting protrusion (22) abuts against the upper edge of the insertion port (71) along the circumferential direction.

7. The coffee bean grinding structure as described in claim 6, characterized in that, The functional part (21) is formed by extending outward in a horizontal direction from one end of the limiting protrusion (22).

8. The coffee bean grinding structure as described in claim 7, characterized in that, The powder outlet sleeve (7) is provided with a guide channel (80) that is vertically aligned with the insertion port (71) and extends vertically. The limiting protrusion (22) is slidably installed in the guide channel (80). Furthermore, the elastic element (4) is a vertically arranged reset spring. The upper end of the reset spring is connected to the top wall of the guide channel (80) and the lower end is connected to the limiting protrusion (22). A guide opening (801) extending along its own height direction is provided on one side of the guide channel (80). The aforementioned actuating part (21) is inserted into the guide opening (801) and can move up and down along the guide opening (801).

9. The coffee bean grinding structure as described in claim 8, characterized in that, An inverted U-shaped block (8) is installed on the top surface of the powder outlet sleeve (7) directly above the insertion port (71). The inner cavity of the U-shaped block (8) forms the guide channel (80), and the opening on one side forms the guide port (801).

10. A coffee machine, characterized in that, Includes the coffee bean grinding structure as described in any one of claims 1 to 9.

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