Bean grinding device and coffee machine using same

Abstract

The utility model discloses a bean grinding device and a coffee machine with the bean grinding device, and the bean grinding device comprises a bean bin assembly which comprises a bean bin; the bean grinding assembly comprises a main machine and a bean grinding box, and the bean bin is installed on the main machine; the bean bin assembly further comprises a baffle capable of sliding in the bean bin relative to the bean bin, the bean bin is provided with an outlet allowing coffee beans to pass through and enter the bean grinding box, and the bean grinding device can be in the following two states: in the first state, the baffle closes the outlet of the bean bin, and the bean bin can be separated from the main machine; in the second state, the baffle opens the outlet of the bean bin, and the bean bin and the main machine are locked.

Description

Technical Field

[0001] The utility model relates to a beverage brewing device, in particular to a bean grinding device and a coffee machine using the bean grinding device. Background Art

[0002] With the changes in people's living habits and the improvement of their quality of life, more and more people have begun to accept and love coffee as a drink, so various coffee machines for home use have begun to appear in people's lives.

[0003] Currently commonly used coffee machines usually have a bean grinding device. For example, Chinese patent application number 202111396192.9 discloses a coffee machine with a bean grinding function, which includes a coffee machine body and a bean grinding device detachably connected to the outside of the coffee machine body. The bean grinding device includes a bean box assembly with a feed channel, a bean grinding assembly matched with the bean box assembly, and a drive assembly that powers the bean grinding assembly.

[0004] The bean box assembly and the bean grinding assembly of the above-mentioned existing coffee machine are inseparable. New coffee beans can only be replaced when the coffee beans in the bean box assembly are used up, resulting in the inability to meet the needs of different flavors in a short period of time; and it is not convenient to clean and add beans to the bean box assembly.

[0005] To this end, Chinese patent application number 202323303141.4 discloses a quick-detachable coffee bean grinder. The quick-detachable coffee bean grinder includes a frame, a bean hopper, a grinding disc hopper, and a power unit. The grinding disc hopper is mounted below the bean hopper, and the bean hopper and grinding disc hopper are detachably connected to the frame. By modularizing each component, it is easy to remove for further cleaning, and clean up dead corners.

[0006] However, the bean hopper and the grinding disc compartment of the coffee machine cannot remain constantly open. Otherwise, only the required amount of coffee beans can be added at once, and it is impossible to produce a fixed or desired amount of coffee without disassembling the machine. This can also lead to the bean hopper being removed before all the coffee beans in it are used up, resulting in wasted coffee beans. Furthermore, a structure with a detachable bean hopper and grinding disc compartment requires both a bean hopper opening and closing device and a way to prevent the bean hopper from being removed while open. However, no technology currently exists that can simultaneously address these issues.

[0007] Therefore, there is room for further improvement. Utility Model Content

[0008] The first technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide a bean grinding device in which the passage between the bean hopper and the bean grinding box can be opened and closed, thereby achieving quantitative coffee production without disassembling the bean hopper and preventing the coffee beans from being poured out when the bean hopper is disassembled.

[0009] The second technical problem to be solved by the present invention is to provide a coffee machine using the above-mentioned bean grinding device.

[0010] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a bean grinding device, comprising:

[0011] Bean silo components, including bean silos; and

[0012] The bean grinding assembly includes a main unit and a bean grinding box, wherein the bean bin is mounted on the main unit; the characteristics are:

[0013] The bean hopper assembly further includes a baffle that can slide relative to the bean hopper within the bean hopper. The bean hopper has an outlet for coffee beans to pass through and enter the bean grinding box. The bean grinding device can be in the following two states:

[0014] In the first state, the baffle closes the outlet of the bean bin, and the bean bin can be separated from the host;

[0015] In the second state, the baffle opens the outlet of the bean bin, and the bean bin is locked with the host.

[0016] By setting a baffle, the bean hopper can be opened and closed when it slides to different positions, so that the channel between the bean hopper and the grinder box can be opened and closed as needed, realizing quantitative coffee making without disassembling the bean hopper, and preventing coffee beans from pouring out when the bean hopper is disassembled.

[0017] Furthermore, the bean hopper is supported on the main unit and can slide up and down relative to the main unit, the baffle includes a baffle body and a first protrusion formed on the baffle body, the main unit includes a bean hopper bracket, and a second protrusion is formed on the bottom of the bean hopper bracket, the second protrusion penetrates into the bean hopper and is arranged adjacent to the baffle;

[0018] When the baffle opens the bean bin, the first protrusion abuts against the bottom of the second protrusion on the bean bin support, so that the bean bin and the bean bin support are locked;

[0019] When the baffle closes the bean bin, the first protrusion leaves the second protrusion of the bean bin support, so that the bean bin can be separated from the bean bin support.

[0020] The cooperation between the baffle and the bean hopper bracket prevents the bean hopper from being in an open state when the bean hopper and the grinder box are separated, thus preventing coffee beans from falling.

[0021] Furthermore, to facilitate the cooperation between the two protrusions, the bean bin includes a box body, a top cover and a bottom cover, wherein the top cover is arranged on the top of the box body and the bottom cover is arranged on the bottom of the box body, thereby forming a space inside the box body for accommodating coffee beans;

[0022] One side of the box body is recessed into the box body to accommodate part of the host, and the second protrusion penetrates into the box body.

[0023] Furthermore, in order to prevent the bean hopper from moving laterally relative to the bean hopper support and becoming detached from the bean hopper support, the bean hopper support is further provided with a positioning post that penetrates into the box body, and a positioning groove that cooperates with the positioning post is formed in the bean hopper. The positioning post cooperates with the positioning groove to position the bean hopper and the bean hopper support in the laterally direction.

[0024] Furthermore, to facilitate the entry of coffee beans from the bean hopper into the bean grinding box, the bean hopper comprises a box body, a top cover, and a bottom cover. The top cover is arranged on the top of the box body, and the bottom cover is arranged on the bottom of the box body, thereby forming a space inside the box body for accommodating coffee beans. The bottom cover is provided with a first through-hole for the coffee beans to pass through, and the first through-hole serves as an outlet of the bean hopper.

[0025] The main unit includes a bean hopper support and a bottom plate arranged under the bottom cover. The bean grinding box is installed under the bottom plate. A second perforation is formed on the bottom plate at a position corresponding to the first perforation. The top of the bean grinding box is open, and in a horizontal plane projection, the second perforation falls within the range of the open top of the bean grinding box.

[0026] Furthermore, to facilitate the hand feeling when the operating baffle slides into place, the bean hopper includes a box body, a top cover and a bottom cover. The top cover is arranged on the top of the box body, and the bottom cover is arranged on the bottom of the box body, thereby forming a space inside the box body for accommodating coffee beans. The bottom cover is provided with a first through-hole for the coffee beans to pass through, and the first through-hole serves as an outlet of the bean hopper.

[0027] The bottom cover is provided with a dial point, which is elastically connected to the bottom cover. The baffle includes a baffle body, and a concave point is formed on the bottom surface of the baffle body. When the baffle slides to the open position and the closed position, the dial point is locked in the concave point at the corresponding position.

[0028] Furthermore, the bean hopper includes a box body, a top cover, and a bottom cover. The top cover is arranged on the top of the box body, and the bottom cover is arranged on the bottom of the box body, thereby forming a space inside the box body for accommodating coffee beans. The bottom cover is provided with a first through-hole for the coffee beans to pass through, and the first through-hole serves as an outlet of the bean hopper.

[0029] The baffle includes a baffle body and a bean outlet hole formed on the baffle body. When the baffle slides so that the bean outlet hole corresponds to the first perforation, the first perforation is opened. When the baffle slides so that the bean outlet hole is misaligned with the first perforation, the first perforation is closed.

[0030] Furthermore, in order to facilitate operation of the baffle inside the bean silo from outside the bean silo, the bean silo is provided with a through hole, and the bean silo assembly further includes a shift rod, which passes through the through hole from outside the bean silo and into the bean silo, thereby connecting with the baffle.

[0031] To prevent the motor of the bean grinding assembly from malfunctioning when there are no coffee beans, the bean hopper assembly further includes a push rod and a connecting rod. The push rod tends to be retracted into the bean hopper, and the connecting rod is slidably disposed within the bean hopper. The main body of the bean grinding assembly further includes a motor and a micro switch capable of controlling the motor.

[0032] When the bean grinding device is in the first state, the top rod is retracted into the bean bin and separated from the micro switch;

[0033] When the bean grinding device is in the second state, the baffle pushes the top rod through the bean bin via the connecting rod to abut against the micro switch.

[0034] The technical solution adopted by the present invention to solve the second technical problem is: a coffee machine, including a machine body, characterized in that the bean grinding device as described above is installed on the machine body.

[0035] Compared with the prior art, the advantages of the present invention are: by setting a baffle, the bean hopper can be opened and closed when it slides to different positions, so that the channel between the bean hopper and the bean grinding box can be opened and closed as needed, thereby realizing quantitative coffee making without disassembling the bean hopper and preventing coffee beans from spilling out when the bean hopper is disassembled; through the cooperation of the baffle and the bean hopper bracket, the bean hopper is prevented from being in an open state when the bean hopper and the bean grinding box are separated, thereby preventing coffee beans from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a coffee machine according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the exploded structure of the bean grinding device according to an embodiment of the present invention;

[0038] Figure 3 Schematic diagram of the bean hopper assembly of the bean grinding device according to an embodiment of the present invention (viewed from the back to the front);

[0039] Figure 4 This is a schematic diagram of the exploded structure of the bean bin assembly of the bean grinding device according to an embodiment of the present invention;

[0040] Figure 5This is a schematic diagram of the main unit of the bean grinding assembly of the bean grinding device according to an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of a bean grinding box of a bean grinding assembly of a bean grinding device according to an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of a main unit with a hidden bean hopper support in a bean grinding assembly of a bean grinding device according to an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the bean grinding device according to an embodiment of the present invention, with part of the bean hopper assembly hidden (closed state);

[0044] Figure 9 This is a schematic diagram of the bean grinding device according to an embodiment of the present invention, with part of the bean hopper assembly hidden (closed state);

[0045] Figure 10 This is a partially exploded structural diagram of the bean bin assembly of the bean grinding device according to an embodiment of the present invention;

[0046] Figure 11 Schematic diagram of the baffle and lever of the bean bin assembly of the bean grinding device according to an embodiment of the present invention;

[0047] Figure 12 This is a schematic diagram of the matching of the base of the bean grinding device and the bean hopper support according to an embodiment of the utility model;

[0048] Figure 13 This is a schematic diagram of the bean grinding device according to an embodiment of the present invention, with part of the bean bin assembly hidden (in the open state);

[0049] Figure 14 This is a bottom view of the bean grinding device of the present invention embodiment with the bean grinding box hidden (with the bean bin closed);

[0050] Figure 15 This is a bottom view of the bean grinding device of the present invention embodiment with the bean grinding box hidden (with the bean bin open);

[0051] Figure 16 This is a rear view of the bean grinding device with the grinding box hidden in the embodiment of the present invention. DETAILED DESCRIPTION

[0052] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0054] See also Figures 1 to 7 A coffee machine includes a machine body 200 and a bean grinding device 100 disposed outside the machine body 200. The bean grinding device 100 is entirely removable and installable relative to the machine body 200. The bean grinding device 100 includes a bean hopper assembly 1 and a bean grinding assembly 2, and the bean hopper assembly 1 and the bean grinding assembly 2 are removably installed. The bean hopper assembly 1 is used to store coffee beans, and the bean grinding assembly 2 is used to grind the coffee beans into coffee powder.

[0055] The bean hopper assembly 1 includes a bean hopper 11, a baffle 12, a lever 13, a top rod 14, and an elastic rod 15, and the bean grinding assembly 2 includes a main unit 21 and a bean grinding box 22. The bean hopper 11 includes a housing 111, a top cover 112, a bottom cover 113, and a base 114. The top cover 112 is located on the top of the housing 111, and the bottom cover 113 is located on the bottom of the housing 111, thereby forming a space inside the housing 111 for accommodating coffee beans. The base 114 is located within the housing 111 and can be tightly mounted on the bottom cover 113. The base 114 and the bottom cover 113 can be fixed together by screws. The coffee beans are accommodated in the space above the base 114, and the coffee beans can be added by opening the top cover 112.

[0056] The housing 111 has two opposing sides. The first side (the rear side facing away from the user when in use), which faces the coffee machine's body 200, is recessed away from the body 200 to accommodate a portion of the main unit 21. The main unit 21 includes a motor 211, a bean hopper support 212 disposed around the motor 211, and a bottom plate 213 disposed beneath the bean hopper support 212. The bean hopper support 212 of the main unit 21 is recessed into the recessed portion of the rear side of the housing 111, while the bottom plate 213 is located below the bottom of the bean hopper 11. The grinding box 22 is mounted below the base plate 213 and includes a box body 221, a dynamic grinding wheel 222, and a static grinding wheel (not shown, as in the prior art). The output shaft of the motor 211 is connected to a first transmission shaft 2111, which extends below the base plate 213. The dynamic grinding wheel 222 is provided with a second transmission shaft 223. The first transmission shaft 2111 and the second transmission shaft 223 are in transmission connection, thereby enabling the motor 21 to drive the dynamic grinding wheel 222 to rotate.

[0057] The bottom cover 113 is provided with a first through-hole 1131 for passage of coffee beans. A second through-hole 2131 is provided on the bottom plate 213 of the main body 21 of the grinding assembly 2 at a position corresponding to the first through-hole 1131. The top of the grinding box 22 is open, and in a horizontal projection, the second through-hole 2131 falls within the range of the open top of the grinding box 22, allowing coffee beans to pass through the second through-hole 2131 and enter the grinding box 22. A third through-hole 1141 is provided on the base 114 at a position corresponding to the first through-hole 1131, allowing coffee beans to pass downward from the space within the housing 111 and reach the first through-hole 1131 of the bottom cover 113.

[0058] A through-hole 1111 is defined on a second side of the housing 111 (the front side facing the user when in use), i.e., the side facing away from the coffee machine body 200. The lever 13 extends from the outside of the housing 111 through the through-hole 1111 and into the interior of the housing 111. The baffle 12 is slidably disposed on the bottom cover 113, located between the base 114 and the bottom cover 113 (the base 114 is recessed upward at a position corresponding to the baffle 12). The portion of the lever 13 that extends into the housing 111 is connected to the baffle 12. The lever 13 and baffle 12 can be separate components connected to each other, or they can be integrally formed. Thus, by operating the lever 13 from outside the bean hopper 11, it slides along the through-hole 1111, thereby driving the baffle 12 to slide. The sliding of the baffle 12 opens and closes the first through-hole 1131, thereby opening the bean hopper 11 to allow coffee beans to pass through, or closing the bean hopper 12 to prevent coffee beans from passing through. In this embodiment, the sliding direction of the baffle 12 is perpendicular to the direction of the line connecting the first side and the second side of the box body 111, that is, the left and right direction of the user when in use. Figure 2The Z-axis direction shown in FIG, the sliding direction of the baffle 12 is the X-axis direction, and the Y-axis direction is the up-down direction. Alternatively, the baffle 12 can also slide along the Z-axis or other directions, as long as it can cooperate with the bottom cover 113 to open (see FIG Figure 13 ) and close bean bin 11 (see Figure 8 、 Figure 9 ) can be used.

[0059] See also Figure 10 and Figure 11 The baffle 12 includes a baffle body 121 and a first protrusion 122 formed on the baffle body 121. A bean outlet hole 123 is formed in the baffle body 121. The bean outlet hole 123 and the first perforation 1131 preferably correspond in size and shape. Thus, when the baffle 12 slides until the bean outlet hole 123 aligns with the first perforation 1131, the first perforation 1131 opens. When the baffle 12 slides until the bean outlet hole 123 and the first perforation 1131 are misaligned, the first perforation 1131 closes. Alternatively, the bean outlet hole 123 may not be provided. As long as the dimensions of the baffle body 121 are appropriately set, the first perforation 1131 can be opened and closed by sliding within the limited space within the housing 111.

[0060] To ensure a pleasant feel when lever 13 is actuated and to indicate when it is fully engaged, a shift point 1132 is provided on the bottom cover 113. This point 1132 is elastically connected to the bottom cover 113 and, in its natural position, protrudes from the upper surface of the bottom cover 113. A recess 124 is formed on the bottom surface of the baffle body 121 of the baffle 12. This recess 124 is a groove formed by an upward depression in the bottom surface of the baffle body 121. The shift point 1132 and the recess 124 cooperate with each other. When the position of the concave point 124 is not aligned with the dial point 1132, the dial point 1132 is pressed downward by the pressure of the baffle body 121, deforming at the connection with the bottom cover 113, and the dial point 1132 is no longer higher than the upper surface of the bottom cover 113; when the concave point 124 slides with the baffle body 121 to correspond with the dial point 1132, the dial point 1132 is no longer pressed and resets upward to snap into the concave point 124. At this time, there is not only an audible prompt when snapping in, but also feedback to the user, thereby indicating to the user that the baffle 12 has slid into place. There can be two concave points 124, spaced apart along the sliding direction of the baffle 12, so that when the baffle 12 is in the open position or closed position, there is a concave point 124 that engages with the dial point 1132.

[0061] The first protrusion 122 is formed on the side of the baffle body 121, in this embodiment, the rear side. The bottom of the bean hopper support 212 of the grinding assembly 2 is formed with a second protrusion 214, which is configured as a hook. The second protrusion 214 penetrates into the box body 111 from the back to the front and is arranged adjacent to the baffle 12. The first protrusion 122 is lower than the second protrusion 214, so that Figure 13When the baffle 12 opens the bean bin 11, its first protrusion 122 abuts against the bottom of the second protrusion 214 on the bean bin support 212, thereby locking the bean bin 11 and the bean bin support 212 and preventing relative movement up and down, so that the bean bin 11 cannot be removed. Figure 9 When the baffle 12 closes the bean bin 11, its first protrusion 122 leaves the bean bin support 212 and no longer cooperates with the second protrusion 214. At this time, the bean bin 11 can be slid upward along the Y-axis direction to be taken out.

[0062] Since the bean hopper support 212 is embedded in the recessed portion of the rear side of the housing 111, the bean hopper 11 and the bean hopper support 212 will not move relative to each other in the X direction or relative to each other in the Z direction. Figure 2 and Figure 12 The bean hopper support 212 also includes positioning posts 215 that penetrate into the housing 111. The positioning posts 215 can be formed on both sides of the bean hopper support 212. The base 114 of the bean hopper 11 is formed with positioning grooves 1142 that cooperate with the positioning posts 215. The positioning grooves 1142 can be formed by an upward depression in the bottom surface of the base 114, and are recessed from the side closest to the bean hopper support 212 to the direction away from the bean hopper support 212. The positioning posts 215 can be semi-cylindrical, and partially snap into the positioning grooves 1142, thereby achieving a stop in the front-to-back direction.

[0063] See also Figure 8 、 Figure 9 and Figure 13 The top rod 14 can be at least partially disposed within the base 114. One end of the top rod 14 is rotatably connected to the base 114, and the other end of the top rod 14 can extend out of the bean hopper 11. An elastic rod 15 is disposed adjacent to the top rod 14. One end of the elastic rod 15 can be fixed to the base 114 or the bottom cover 113, and the other end can be connected to the top rod 14, thereby maintaining the tendency for the top rod 14 to be retracted into the bean hopper 11. The bean hopper 11 also includes a connecting rod 16 that is slidably disposed within the base 114. The connecting rod 16 can be limited by the base 114 so that the connecting rod 16 can only move linearly in one direction. The connecting rod 16 can be opposite the bottom cover 113, while the top rod 14 and the elastic rod 15 are disposed on the side of the base 14 away from the bottom cover 113. The top rod 14 can partially extend through the base 114, thereby causing the top rod 14 and the connecting rod 16 to interfere with each other. When the connecting rod 16 moves, it can push the top rod 14 to rotate relative to the base 114, so that the free end of the top rod 14 (the end not connected to the base 114) is extended out of the bean bin 11.

[0064] In order to facilitate the movement of the connecting rod 16, the baffle 12 can be used. When the baffle 12 slides to the closed position, it does not contact the connecting rod 16, and the top rod 14 retracts into the bean bin 11. Figure 14When the baffle 12 slides to the open position, it contacts the connecting rod 16, thereby pushing the connecting rod 16 to move. Figure 15 The middle arrow A indicates the moving direction of the connecting rod 16, which in turn pushes the top rod 14 to rotate, so that the end of the top rod 14 passes out of the bean bin 11. Figure 15 The middle arrow B shows the rotation direction of the push rod 14. After this, the baffle 12 slides to the closed position again, and the connecting rod 16 is no longer stressed. The push rod 14 is reset under the effect of the elastic rod 15 and pushes the connecting rod 16 to reset.

[0065] Recombination Figure 16 The main unit 21 of the bean grinding assembly 2 also includes a microswitch 216, which transmits signals to the control module of the main unit 21, thereby controlling the operation of the motor 211. The microswitch 216 can cooperate with the ejector 14. When the ejector 14 is extended, it can directly or indirectly contact the contacts of the microswitch 216, thereby activating the motor 211 of the bean grinding assembly 2. When the ejector 14 is retracted, it cannot contact the contacts of the microswitch 216, and the motor 211 cannot be activated or automatically stops from operating. Optionally, the microswitch 216 is located on the rear side of the bean hopper support 212.

[0066] Thus, when the bean grinding device 100 is in the first state, the outlet of the bean hopper 11 (the first perforation 1131 on the bottom cover 113) is closed by the baffle 12, the motor 211 of the bean grinding assembly 2 automatically stops working, and the bean hopper 11 can now be removed from the bean hopper support 212. When in the second state, the outlet of the bean hopper 11 is opened by the baffle 12, the bean grinding operation can proceed normally, and the bean hopper 11 cannot be removed from the bean hopper support 212.

Claims

1. A bean grinding device, comprising: A bean bin assembly (1), comprising a bean bin (11); as well as The bean grinding assembly (2) comprises a main unit (21) and a bean grinding box (22), wherein the bean bin (11) is mounted on the main unit (21); and is characterized in that: The bean bin assembly (1) further comprises a baffle (12) which can slide relative to the bean bin (11) in the bean bin (11), the bean bin (11) having an outlet for allowing coffee beans to pass through and enter the bean grinding box (22), and the bean grinding device can be in the following two states: In the first state, the baffle (12) closes the outlet of the bean bin (11), and the bean bin (11) can be separated from the host (21); In the second state, the baffle (12) opens the outlet of the bean bin (11), and the bean bin (11) is locked with the host (21).

2. The bean grinding device according to claim 1, characterized in that: The bean bin (11) is supported on the main machine (21) and can slide up and down relative to the main machine (21); the baffle (12) includes a baffle body (121) and a first protrusion (122) formed on the baffle body (121); the main machine (21) includes a bean bin support (212); a second protrusion (214) is formed on the bottom of the bean bin support (212); the second protrusion (214) penetrates into the bean bin (11) and is arranged adjacent to the baffle (12); When the baffle (12) opens the bean bin (11), the first protrusion (122) abuts against the bottom of the second protrusion (214) on the bean bin support (212), so that the bean bin (11) and the bean bin support (212) are locked; When the baffle (12) closes the bean bin (11), the first protrusion (122) leaves the second protrusion (214) of the bean bin support (212), so that the bean bin (11) can be separated from the bean bin support (212).

3. The bean grinding device according to claim 2, characterized in that: The bean bin (11) comprises a box body (111), a top cover (112) and a bottom cover (113), wherein the top cover (112) is arranged on the top of the box body (111), and the bottom cover (113) is arranged on the bottom of the box body (111), thereby forming a space inside the box body (111) for accommodating coffee beans; One side of the box body (111) is recessed into the box body (111) to accommodate a portion of the host (21), and the second protrusion (214) penetrates into the box body (111).

4. The bean grinding device according to claim 3, characterized in that: The bean silo support (212) is further provided with a positioning column (215) which penetrates into the box body (111); a positioning groove (1142) which cooperates with the positioning column (215) is formed in the bean silo (11); the positioning column (215) cooperates with the positioning groove (1142) to position the bean silo (11) and the bean silo support (212) in the horizontal direction.

5. The bean grinding device according to claim 1, characterized in that: The bean bin (11) comprises a box body (111), a top cover (112) and a bottom cover (113); the top cover (112) is arranged on the top of the box body (111); the bottom cover (113) is arranged on the bottom of the box body (111); thereby, a space for accommodating coffee beans is formed inside the box body (111); a first through hole (1131) for coffee beans to pass through is formed on the bottom cover (113); the first through hole (1131) is an outlet of the bean bin (11); The main unit (21) comprises a bean hopper support (212) and a bottom plate (213) arranged below the bottom cover (113); the bean grinding box (22) is installed below the bottom plate (213); a second perforation (2131) is provided on the bottom plate (213) at a position corresponding to the first perforation (1131); the top of the bean grinding box (22) is open, and in a horizontal plane projection, the second perforation (2131) falls within the range of the open top of the bean grinding box (22).

6. The bean grinding device according to claim 1, characterized in that: The bean bin (11) comprises a box body (111), a top cover (112) and a bottom cover (113); the top cover (112) is arranged on the top of the box body (111); the bottom cover (113) is arranged on the bottom of the box body (111); thereby, a space for accommodating coffee beans is formed inside the box body (111); a first through hole (1131) for coffee beans to pass through is formed on the bottom cover (113); the first through hole (1131) is an outlet of the bean bin (11); The bottom cover (113) is provided with a dial point (1132), and the dial point (1132) is elastically connected to the bottom cover (113). The baffle (12) includes a baffle body (121), and a concave point (124) is formed on the bottom surface of the baffle body (121). When the baffle (12) slides to the open position and the closed position, the dial point (1132) is locked into the concave point (124) at the corresponding position.

7. The bean grinding device according to claim 1, characterized in that: The bean bin (11) comprises a box body (111), a top cover (112) and a bottom cover (113); the top cover (112) is arranged on the top of the box body (111); the bottom cover (113) is arranged on the bottom of the box body (111); thereby, a space for accommodating coffee beans is formed inside the box body (111); a first through hole (1131) for coffee beans to pass through is formed on the bottom cover (113); the first through hole (1131) is an outlet of the bean bin (11); The baffle (12) comprises a baffle body (121) and a bean outlet hole (123) provided on the baffle body (121); when the baffle (12) slides so that the bean outlet hole (123) corresponds to the first perforation (1131), the first perforation (1131) is opened; and when the baffle (12) slides so that the bean outlet hole (123) is misaligned with the first perforation (1131), the first perforation (1131) is closed.

8. The bean grinding device according to claim 1, characterized in that: The bean bin (11) has a through hole (1111), and the bean bin assembly (1) further comprises a shifting rod (13), wherein the shifting rod (13) passes through the through hole (1111) from outside the bean bin (11) and into the inside of the bean bin (11), thereby being connected to the baffle (12).

9. The bean grinding device according to claim 1, characterized in that: The bean bin assembly (1) further comprises a top rod (14) and a connecting rod (16), wherein the top rod (14) maintains a tendency to be retracted in the bean bin (11), and the connecting rod (16) is slidably arranged in the bean bin (11), and the main unit (21) of the bean grinding assembly (2) further comprises a motor (211) and a micro switch (26) capable of controlling the motor (211); When the bean grinding device is in the first state, the top rod (14) is retracted into the bean bin (11) and separated from the micro switch (26); When the bean grinding device is in the second state, the baffle (12) pushes the top rod (14) through the connecting rod (16) to pass through the bean bin (11) and contact the micro switch (26).

10. A coffee machine, comprising a machine body (200), characterized in that: The bean grinding device according to any one of claims 1 to 9 is mounted on a machine body (200).

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