Brewing device of coffee machine

Abstract

The utility model discloses a brewing device of a coffee machine. The brewing device comprises a brewing shell, a brewing bin, a powder filling port and a powder pressing port, the device further comprises a first rotation driving element, a rotation connecting rod and a sliding block. Through linkage cooperation of the first rotation driving element, the rotation connecting rod, the first guide groove and the sliding block, state switching of the brewing bin aligned with the powder filling port or the powder pressing port is achieved, meanwhile, in-place is stable and not prone to deviation, and meanwhile the influence of part abrasion caused by long-time operation on device operation is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of coffee machines and relates to a coffee machine brewing device. Background Art

[0002] An existing automatic coffee machine, for example, a Chinese invention patent with publication number CN102144887A, provides an automatic coffee machine, which includes a brewing device as a core working unit, the brewing device and the brewer structure of which are composed of a transmission mechanism, a brewing mechanism, a water inlet mechanism, a water discharge mechanism, a powder pressing mechanism, and a residue pushing mechanism, the brewing device also includes a residue pushing resetting mechanism connected to the coffee box, the brewing mechanism includes a driving member that can drive the working position of the coffee box to change during the process of the position change being driven, the driving member is provided with a resetting driving part, and the residue pushing resetting mechanism can realize the action of resetting and resetting under the action of the resetting driving part and the coffee box.

[0003] In summary, the existing coffee machine brewing device is provided with a reset drive part on the driving member, and the top-slag reset mechanism can realize the action of top-slag and reset under the action of the reset drive part and the coffee box. However, the internal mechanism relies on the action of the driving groove to achieve driving. It is difficult to control whether the coffee box is in place. The arc groove is prone to wear after long-term use, which may cause the route of the coffee box to shift. There is a lot of room for improvement. Summary of the invention

[0004] The purpose of the utility model is to solve the above problems in the existing technology and propose a coffee machine brewing device, comprising:

[0005] The brewing core mechanism comprises a brewing shell and a brewing chamber, wherein the brewing shell comprises a powder filling port and a powder pressing port, the brewing shell comprises a first position, an intermediate position and a second position, the brewing chamber can move to the first position, the intermediate position and the second position, when the brewing chamber is at the first position, the brewing chamber is aligned with the powder filling port, when the brewing chamber is at the second position, the brewing chamber is aligned with the powder pressing port, and the brewing chamber is provided with a first guide groove;

[0006] A core rotating mechanism, the core rotating mechanism comprising a first rotating driving element, a rotating connecting rod and a slider, the rotating connecting rod is connected to the first rotating driving element, the slider is rotatably connected to one end of the rotating connecting rod, the slider can slide in a first guide groove, the first guide groove comprises a third position and a fourth position, and the slider can move between the third position and the fourth position;

[0007] When the brewing chamber is located at the first position and the slider is located at the third position, the first rotation driving element can drive the rotation connecting rod to rotate in one direction so as to drive the brewing chamber to move from the first position to the middle position, and the first rotation driving element can continue to drive the rotation connecting rod to rotate in one direction and drive the slider to move from the third position to the fourth position through the rotation connecting rod so as to move the brewing chamber from the middle position to the second position;

[0008] When the brewing chamber is located at the second position and the slider is located at the fourth position, the first rotation driving element can drive the rotating connecting rod to rotate in another direction to drive the brewing chamber to move from the second position to the middle position, and the first rotation driving element can continue to drive the rotating connecting rod to rotate in one direction, and drive the slider to move from the fourth position to the third position through the rotating connecting rod to move the brewing chamber from the middle position to the first position. In the above-mentioned coffee machine brewing device, a first convex block is provided on the outside of the brewing chamber, and a first straight portion and a first arc portion are provided on the brewing shell, the first straight portion is connected with the first arc portion to form a second guide groove, and the first convex block moves in the second guide groove to control the movement of the brewing chamber.

[0009] In the above-mentioned brewing device of a coffee machine, the brewing chamber is provided with a second protrusion, the brewing shell is provided with a second straight portion, and the second protrusion moves in the second straight portion.

[0010] In the above-mentioned coffee machine brewing device, the core rotating mechanism also includes a first worm, a first worm wheel, a first gear and a second gear, the first worm is connected to the output shaft of the first rotating driving element, the first worm wheel is meshed with the first worm, the first gear is connected to and concentric with the first worm wheel, the second gear is meshed with the first gear, the first rotating driving element can drive the first worm wheel to rotate through the first worm so that the first gear drives the second gear to rotate, and the rotating connecting rod is connected to and concentric with the second gear.

[0011] In the above-mentioned coffee machine brewing device, a material receiving rod is provided inside the brewing chamber, and an ejector rod is also provided at one end of the brewing chamber. An insertion hole is provided at one end of the material receiving rod, and the ejector rod is inserted into the insertion hole. When the ejector rod rotates, the ejector rod can drive the material receiving rod to move along the side wall of the brewing chamber.

[0012] In the above-mentioned coffee machine brewing device, the brewing shell is provided with an alignment reference point, and when the brewing chamber moves from the second position toward the first position, the ejector rod can contact the alignment reference point and pull the material receiving rod in the brewing chamber.

[0013] In the above-mentioned coffee machine brewing device, an elastic element is arranged in the brewing chamber, one end of the elastic element contacts the bottom of the brewing chamber, and the other end of the elastic element contacts the material receiving rod, and the elastic element pushes the material receiving rod away from the bottom of the brewing chamber.

[0014] In the above-mentioned coffee machine brewing device, it also includes a powder pressing mechanism, which includes a second rotating drive element, a screw, a powder pressing cylinder and a limiting cylinder, the screw is connected to the second rotating drive element, the screw is provided with a first thread, the powder pressing cylinder is provided with a second thread, the first thread is connected to the second thread, the powder pressing cylinder is provided with a limiting block, the limiting cylinder is provided with a limiting groove, the limiting block is connected to the limiting groove and can move along the length direction of the limiting groove, and the second rotating drive element can drive the powder pressing cylinder to move along the length direction of the limiting groove through the screw.

[0015] In the above-mentioned coffee machine brewing device, the powder pressing mechanism also includes a second worm and a second worm wheel, the second worm is connected to the output shaft of the second rotating drive element, the second worm wheel is meshed with the second worm, the lead screw is connected to and concentric with the second worm wheel, and the second rotating drive element can drive the second worm wheel to rotate through the second worm to rotate the lead screw.

[0016] In the above-mentioned coffee machine brewing device, a position sensor is also included, and the position sensor is used to feedback whether the brewing chamber is located at the first position or the second position.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. Through the linkage cooperation among the first rotating driving element, the rotating connecting rod, the first guide groove and the slider, the brewing chamber is switched to the state of aligning with the powder filling port or the powder pressing port. At the same time, it is relatively stable and not easy to shift. At the same time, the wear of parts caused by long-term operation has little effect on the operation of the device.

[0019] 2. The first protrusion moves in the first straight portion and the first arc portion to guide the movement of the brewing chamber, thereby preventing the brewing chamber from shifting and playing a role in assisting force.

[0020] 3. The second protrusion moves on the second straight portion to guide the movement of the brewing chamber, thereby preventing the brewing chamber from shifting and playing a role in assisting force.

[0021] 4. The design of the receiving rod and the ejector rod helps to adjust the size of the internal space of the brewing chamber to meet the needs of different stages, such as expanding the space to facilitate the loading of coffee powder or cleaning of residues. The ejector rod controls the movement of the receiving rod along the inner wall of the brewing chamber to achieve adjustable size of the internal space of the brewing chamber, which is convenient for receiving and feeding materials.

[0022] 5. In the absence of external force, the elastic element automatically pushes the receiving rod away from the bottom of the brewing chamber, forming a floating structure with the receiving rod, which is not easy to damage the device during powder pressing. At the same time, it plays the role of automatic reset and assisting the receiving rod to push the material out of the brewing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the coffee machine brewing device of the present utility model.

[0024] Figure 2 It is a schematic diagram of the core rotating mechanism of the utility model.

[0025] Figure 3 It is a cross-sectional view of the utility model in a powder-filled state.

[0026] Figure 4 It is a cross-sectional view of the utility model in a powder pressing state.

[0027] Figure 5 It is a schematic diagram of the brewing shell of the utility model.

[0028] Figure 6 It is a schematic diagram of the position of the slider when the utility model is in the powder loading state.

[0029] Figure 7 It is a schematic diagram of the position of the slider when the utility model is in a powder pressing state.

[0030] Figure 8 It is an exploded view of the powder pressing mechanism of the utility model.

[0031] In the figure:

[0032] 1. brewing core mechanism; 11. brewing shell; 111. powder filling port; 112. powder pressing port; 113. first straight line portion; 114. first arc portion; 115. second straight line portion; 116. aligning reference point; 12. brewing chamber; 121. first convex block; 122. second convex block; 123. first guide groove; 1231. third position; 1232. fourth position; 13. material receiving rod; 14. ejector rod; 15. elastic element;

[0033] 2. core rotating mechanism; 21. first rotating driving element; 22. rotating connecting rod; 23. sliding block; 24. first worm; 25. first worm wheel; 26. first gear; 27. second gear;

[0034] 3. Powder pressing mechanism; 31. Second rotating driving element; 32. Second worm; 33. Second worm wheel; 34. Screw; 35. Powder pressing cylinder; 351. Limiting block; 36. Limiting cylinder; 361. Limiting groove;

[0035] 4. Position sensor. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, in the present invention, the descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0042] like Figure 1-Figure 7 As shown, a coffee machine brewing device includes: a brewing core mechanism 1 and a core rotating mechanism 2.

[0043] Among them, the brewing core mechanism 1 includes a brewing shell 11 and a brewing chamber 12. The brewing shell 11 includes a powder filling port 111 and a powder pressing port 112. The brewing shell 11 includes a first position, an intermediate position and a second position. The brewing chamber 12 can move to the first position, the intermediate position and the second position. When the brewing chamber 12 is located at the first position, the brewing chamber 12 is aligned with the powder filling port 111. When the brewing chamber 12 is located at the second position, the brewing chamber 12 is aligned with the powder pressing port 112. The brewing chamber 12 is provided with a first guide groove 123.

[0044] Among them, the core rotating mechanism 2 includes a first rotating driving element 21, a rotating connecting rod 22 and a slider 23. The rotating connecting rod 22 is connected to the first rotating driving element 21. The slider 23 is rotatably connected to one end of the rotating connecting rod 22. The slider 23 can slide in the first guide groove 123. The first guide groove 123 includes a third position 1231 and a fourth position 1232. The slider 23 can move between the third position 1231 and the fourth position 1232.

[0045] Specifically, the first rotation driving element 21 may be a motor.

[0046] Specifically, when the brewing chamber 12 is located at the first position and the slider 23 is located at the third position 1231, the first rotation driving element 21 can drive the rotation connecting rod 22 to rotate in one direction, thereby driving the brewing chamber 12 to move from the first position to the middle position, and the first rotation driving element 21 can continue to drive the rotation connecting rod 22 to rotate in one direction, and drive the slider 23 to move from the third position 1231 to the fourth position 1232 through the rotation connecting rod 22, thereby moving the brewing chamber 12 from the middle position to the second position. When the brewing chamber 12 is located at the second position and the slider 23 is located at the fourth position 1232, the first rotating driving element 21 can drive the rotating connecting rod 22 to rotate in another direction to drive the brewing chamber 12 to move from the second position to the middle position; the first rotating driving element 21 can continue to drive the rotating connecting rod 22 to rotate in one direction, and drive the slider 23 to move from the fourth position 1232 to the third position 1231 through the rotating connecting rod 22 to move the brewing chamber 12 from the middle position to the first position.

[0047] In this embodiment, through the linkage cooperation among the first rotating drive element 21, the rotating connecting rod 22, the first guide groove 123 and the slider 23, the state switching of the brewing chamber 12 to align with the powder filling port 111 or the powder pressing port 112 is realized, and it is relatively stable and not easy to shift. At the same time, the wear of parts caused by long-term operation has little effect on the operation of the device.

[0048] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, a first protrusion 121 is provided on the outside of the brewing chamber 12, and the brewing shell 11 is provided with a first straight portion 113 and a first arc portion 114, the first straight portion 113 is connected to the first arc portion 114 to form a second guide groove, and the first protrusion 121 moves in the second guide groove, thereby controlling the movement of the brewing chamber 12.

[0049] Specifically, when the brewing chamber 12 is in the first position, the first protrusion 121 is located at the first arc portion 114 and away from the connection between the first arc portion 114 and the first straight portion 113; when the brewing chamber 12 starts to move toward the middle position, the first protrusion 121 moves toward the connection between the first arc portion 114 and the first straight portion; when the brewing chamber 12 reaches the middle position, the first protrusion 121 is just at the connection between the first arc portion 114 and the first straight portion 113; when the brewing chamber 12 moves to the second position, the first protrusion 121 moves along the first straight portion 113; when the brewing chamber 12 reaches the second position, the first protrusion 121 reaches the end of the first straight portion 113.

[0050] In this embodiment, the first protrusion 121 moves on the first straight portion 113 and the first arc portion 114 to guide the movement of the brewing chamber 12, thereby preventing the brewing chamber 12 from shifting and providing auxiliary force.

[0051] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, the brewing chamber 12 is provided with a second protrusion 122 , the brewing shell 11 is provided with a second straight portion 115 , and the second protrusion 122 moves in the second straight portion 115 .

[0052] Specifically, when the brewing chamber 12 is in the first position, the second protrusion 122 is located at the lowest end of the second straight portion 115. When the brewing chamber 12 starts to move toward the middle position, the second protrusion 122 remains stationary, and the brewing chamber 12 rotates around the second protrusion 122 as the rotation axis. When the brewing chamber 12 reaches the middle position and starts to move toward the second position, the second protrusion 122 starts to move along the second straight portion 115. When the brewing chamber 12 reaches the second position, the second protrusion 122 is located at the top of the second straight portion 115.

[0053] Preferably, the second straight portion 115 may be connected to the first straight portion 113 and located on the same straight line.

[0054] In this embodiment, the second protrusion 122 moves on the second straight portion 115 to guide the movement of the brewing chamber 12, thereby preventing the brewing chamber 12 from shifting and providing auxiliary force.

[0055] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, the core rotating mechanism 2 also includes a first worm 24, a first worm wheel 25, a first gear 26 and a second gear 27. The first worm 24 is connected to the output shaft of the first rotating drive element 21, the first worm wheel 25 is meshed with the first worm 24, the first gear 26 is connected to and concentric with the first worm wheel 25, the second gear 27 is meshed with the first gear 26, the first rotating drive element 21 can drive the first worm wheel 25 to rotate through the first worm 24 so that the first gear 26 drives the second gear 27 to rotate, and the rotating connecting rod 22 is connected to and concentric with the second gear 27.

[0056] In this embodiment, the first rotating driving element 21 drives the first worm 24 to rotate, the first worm 24 is connected to the first worm wheel 25, thereby driving the first worm wheel 25 to rotate, the first gear 26 is connected to the first worm wheel 25 and is concentric, the first gear 26 is meshed with the second gear 27, thereby driving the second gear 27 to rotate, the second gear 27 is connected to the rotating connecting rod 22 through a snap buckle and a snap groove (not marked in the middle), thereby driving the rotating connecting rod 22 to rotate.

[0057] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, a material receiving rod 13 is provided inside the brewing chamber 12, and an ejector rod 14 is also provided at one end of the brewing chamber 12. An insertion hole is provided at one end of the material receiving rod 13, and the ejector rod 14 is inserted into the insertion hole. When the ejector rod 14 rotates, the ejector rod 14 can drive the material receiving rod 13 to move along the side wall of the brewing chamber 12.

[0058] In this embodiment, the ejector rod 14 is rotatably mounted at one end of the brewing chamber 12 , and the ejector rod 14 is inserted into the socket at the lower end of the material receiving rod 13 . When the ejector rod 14 rotates, it pulls the material receiving rod 13 to move along the side wall of the brewing chamber 12 .

[0059] like Figure 1-Figure 7 As shown, based on the above embodiment, the brewing shell 11 is provided with an alignment reference point 116. When the brewing chamber 12 moves from the second position toward the first position, the ejector rod 14 can contact the alignment reference point 116 and pull the material receiving rod 13 in the brewing chamber 12.

[0060] In this embodiment, when the brewing chamber 12 moves to the first position, one end of the ejector rod 14 contacts the alignment reference point 116 on the brewing shell 11, thereby rotating the ejector rod 14. When the brewing chamber 12 is located at the first position, the ejector rod 14 pulls the material receiving rod 13, so that the internal space of the brewing chamber 12 reaches the maximum state.

[0061] like Figure 1-Figure 7 As shown, on the basis of the above embodiment, an elastic element 15 is arranged in the brewing chamber 12, one end of the elastic element 15 contacts the bottom of the brewing chamber 12, and the other end of the elastic element 15 contacts the material receiving rod 13, and the elastic element 15 pushes the material receiving rod 13 away from the bottom of the brewing chamber 12.

[0062] Specifically, the elastic element 15 is a spring.

[0063] Specifically, the spring is placed on the material receiving rod 13, one end of which contacts the bottom of the brewing chamber 12, and the other end contacts the material receiving rod 13. When the brewing chamber 12 moves from the first position to the middle position, the material receiving rod 13 moves away from the bottom of the brewing chamber 12 under the action of the spring.

[0064] In this embodiment, in the absence of external force, the elastic element 15 automatically pushes the material receiving rod 13 away from the bottom of the brewing chamber 12, forming a floating structure with the material receiving rod 13, which is not easy to damage the device when pressing the powder. At the same time, it plays the role of automatic resetting and assisting the material receiving rod 13 to push the material out of the brewing chamber 12.

[0065] like Figure 1-Figure 8 As shown, on the basis of the above embodiment, it also includes a powder pressing mechanism 3, which includes a second rotating drive element 31, a screw 34, a powder pressing cylinder 35 and a limiting cylinder 36. The screw 34 is connected to the second rotating drive element 31, the screw 34 is provided with a first thread, the powder pressing cylinder 35 is provided with a second thread, the first thread is connected to the second thread, the powder pressing cylinder 35 is provided with a limiting block 351, the limiting cylinder 36 is provided with a limiting groove 361, the limiting block 351 is connected to the limiting groove 361 and can move along the length direction of the limiting groove 361, and the second rotating drive element 31 can drive the powder pressing cylinder 35 to move along the length direction of the limiting groove 361 through the screw 34.

[0066] Specifically, the first rotation driving element 21 may be a motor.

[0067] In this embodiment, the powder pressing mechanism 3 is driven by the second rotation driving element 31 and can provide stable and uniform pressure.

[0068] like Figure 1-Figure 8 As shown, on the basis of the above embodiment, the powder pressing mechanism 3 also includes a second worm 32 and a second worm wheel 33, the second worm 32 is connected to the output shaft of the second rotating drive element 31, the second worm wheel 33 is meshed with the second worm 32, the screw 34 is connected to the second worm wheel 33 and is concentric, and the second rotating drive element 31 can drive the second worm wheel 33 to rotate through the second worm 32, thereby rotating the screw 34.

[0069] In this embodiment, the second rotating driving element 31 drives the second worm 32 to rotate, the second worm wheel 33 engages with the second worm 32, the second worm 32 drives the second worm wheel 33 to rotate, the screw 34 is connected to the second worm wheel 33 and is concentric, and a retaining spring (not marked in the figure) is provided between the screw 34 and the second worm wheel 33 to strengthen the connection between the screw 34 and the second worm wheel 33, and the second worm wheel 33 drives the screw 34 to rotate.

[0070] like Figure 1-Figure 7 As shown, based on the above embodiment, a position sensor 4 is further included, and the position sensor 4 is used to feedback whether the brewing chamber 12 is located at the first position or the second position.

[0071] Specifically, the second gear 27 is provided with a contact block (not shown in the figure), and the position sensor 4 includes two contact switches (not shown in the figure), which can feedback whether the brewing chamber 12 is in the first position or the second position through the contact between the contact block and a certain contact switch.

[0072] In this embodiment, a contact point (not shown) is also provided on the second gear 27. When the second gear 27 rotates, the contact point contacts the position sensor 4 to provide feedback information to the control system, thereby ensuring that the entire brewing process proceeds smoothly according to the predetermined procedure.

Claims

1. A coffee machine brewing device, characterized in that: include: The brewing core mechanism comprises a brewing shell and a brewing chamber, wherein the brewing shell comprises a powder filling port and a powder pressing port, the brewing shell comprises a first position, an intermediate position and a second position, the brewing chamber can move to the first position, the intermediate position and the second position, when the brewing chamber is at the first position, the brewing chamber is aligned with the powder filling port, when the brewing chamber is at the second position, the brewing chamber is aligned with the powder pressing port, and the brewing chamber is provided with a first guide groove; A core rotating mechanism, the core rotating mechanism comprising a first rotating driving element, a rotating connecting rod and a slider, the rotating connecting rod is connected to the first rotating driving element, the slider is rotatably connected to one end of the rotating connecting rod, the slider can slide in a first guide groove, the first guide groove comprises a third position and a fourth position, and the slider can move between the third position and the fourth position; When the brewing chamber is located at the first position and the slider is located at the third position, the first rotation driving element can drive the rotation connecting rod to rotate in one direction so as to drive the brewing chamber to move from the first position to the middle position, and the first rotation driving element can continue to drive the rotation connecting rod to rotate in one direction and drive the slider to move from the third position to the fourth position through the rotation connecting rod so as to move the brewing chamber from the middle position to the second position; When the brewing chamber is located at the second position and the slider is located at the fourth position, the first rotation driving element can drive the rotating connecting rod to rotate in another direction to drive the brewing chamber to move from the second position to the middle position; the first rotation driving element can continue to drive the rotating connecting rod to rotate in one direction, and drive the slider to move from the fourth position to the third position through the rotating connecting rod to move the brewing chamber from the middle position to the first position.

2. A coffee machine brewing device according to claim 1, characterized in that: A first protrusion is arranged on the outside of the brewing chamber, and a first straight portion and a first arc portion are arranged on the brewing shell. The first straight portion is connected with the first arc portion to form a second guide groove, and the first protrusion moves in the second guide groove, thereby controlling the movement of the brewing chamber.

3. A coffee machine brewing device according to claim 2, characterized in that: The brewing chamber is provided with a second protrusion, and the brewing shell is provided with a second straight portion, and the second protrusion moves in the second straight portion.

4. A coffee machine brewing device according to claim 1, characterized in that: The core rotating mechanism also includes a first worm, a first worm wheel, a first gear and a second gear. The first worm is connected to the output shaft of the first rotating driving element, the first worm wheel is meshed with the first worm, the first gear is connected to and concentric with the first worm wheel, the second gear is meshed with the first gear, the first rotating driving element can drive the first worm wheel to rotate through the first worm so that the first gear drives the second gear to rotate, and the rotating connecting rod is connected to and concentric with the second gear.

5. A coffee machine brewing device according to claim 1, characterized in that: A material receiving rod is provided inside the brewing bin, and an ejector rod is also provided at one end of the brewing bin. An insertion hole is provided at one end of the material receiving rod, and the ejector rod is inserted into the insertion hole. When the ejector rod rotates, the ejector rod can drive the material receiving rod to move along the side wall of the brewing bin.

6. A coffee machine brewing device according to claim 5, characterized in that: The brewing shell is provided with an alignment reference point, and when the brewing chamber moves from the second position toward the first position, the ejector rod can contact the alignment reference point and pull the material receiving rod in the brewing chamber.

7. A coffee machine brewing device according to claim 6, characterized in that: An elastic element is arranged in the brewing chamber, one end of the elastic element contacts the bottom of the brewing chamber, and the other end of the elastic element contacts the material receiving rod, and the elastic element pushes the material receiving rod away from the bottom of the brewing chamber.

8. The coffee brewing device according to claim 1, characterized in that: It also includes a powder pressing mechanism, which includes a second rotating drive element, a screw, a powder pressing cylinder and a limiting cylinder, the screw is connected to the second rotating drive element, the screw is provided with a first thread, the powder pressing cylinder is provided with a second thread, the first thread is connected to the second thread, the powder pressing cylinder is provided with a limiting block, the limiting cylinder is provided with a limiting groove, the limiting block is connected to the limiting groove and can move along the length direction of the limiting groove, and the second rotating drive element can drive the powder pressing cylinder to move along the length direction of the limiting groove through the screw.

9. A coffee machine brewing device according to claim 8, characterized in that: The powder pressing mechanism also includes a second worm and a second worm wheel, the second worm is connected to the output shaft of the second rotating drive element, the second worm wheel is meshed with the second worm, the lead screw is connected to and concentric with the second worm wheel, and the second rotating drive element can drive the second worm wheel to rotate via the second worm, thereby rotating the lead screw.

10. A coffee brewing device according to claim 1, characterized in that: It also includes a position sensor, which is used to feedback whether the brewing chamber is located at the first position or the second position.

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