Extraction system and coffee machine

Abstract

The invention relates to the technical field of beverage equipment, and discloses an extraction system and a coffee maker, the extraction system comprises an extraction device, the extraction device comprises a movable part, and the movable part comprises at least one of an extraction head assembly and a powder receiving assembly; the extraction device is arranged on one side of the rack, and at least one fixing structure is formed on the side, away from the extraction device, of the rack; the microswitch is limited to the fixed structure and can detect whether the movable part is located at a preset position or not; the driving assembly comprises a driving structure, a gear set and a gear pressing plate, the gear set is connected with the driving structure and the movable part, the gear pressing plate axially limits the gear set, the gear pressing plate is provided with an abutting part, and the abutting part abuts against the side, away from the rack, of the microswitch.

Description

Technical Field

[0001] This invention relates to the field of beverage equipment technology, specifically to extraction systems and coffee machines. Background Technology

[0002] In related technologies, fully automatic coffee machines are equipped with microswitches to detect the position and stroke of the extraction head. These microswitches are typically fixed directly to a bracket with screws, or installed and limited using a complex positioning structure. Direct screw fixing is prone to detection errors due to inaccurate installation, affecting the accuracy of coffee extraction. The complex positioning structure method is costly to manufacture and prone to damage during disassembly and assembly, impacting service life and ease of maintenance. Summary of the Invention

[0003] In view of this, the present invention provides an extraction system and a coffee machine that can accurately position microswitches and has a simple structure.

[0004] In a first aspect, the present invention provides an extraction system comprising: An extraction apparatus, comprising a movable part, the movable part including at least one of an extraction head assembly and a powder receiving assembly; The frame, wherein the extraction device is disposed on one side of the frame, and at least one fixing structure is formed on the side of the frame opposite to the extraction device; A micro switch is located within the fixed structure, and the micro switch is capable of detecting whether the movable part is in a preset position; The drive assembly includes a drive structure, a gear set, and a gear plate. The gear set connects the drive structure and the movable part. The gear plate axially limits the gear set. The gear plate has an abutment portion that abuts against the side of the micro switch away from the frame.

[0005] Beneficial Effects: By forming a fixed structure on the side of the frame away from the extraction device, the microswitch is confined within the fixed structure. The fixed structure limits the microswitch's position, preventing it from shifting. The drive assembly includes a drive structure, a gear set, and a gear plate. The gear set connects the drive structure and the movable part. The gear plate axially limits the gear set and has an abutment portion that abuts against the side of the microswitch away from the frame. This abutment portion prevents the microswitch from detaching from the fixed structure, further limiting and fixing the microswitch's position. This achieves a secure fixation of the microswitch, solving the problems of unstable installation and easy loosening of the microswitch. It allows for accurate positioning of the microswitch, improving installation stability. If maintenance or replacement of the microswitch is required, the gear plate can be removed from the frame to disassemble the microswitch, thus achieving convenient maintenance. Using a gear plate for further limiting and fixing the microswitch eliminates the need for additional parts, resulting in a simple overall structure with fewer components.

[0006] In one alternative embodiment, the fixing structure includes a perimeter, and the microswitch is confined within the perimeter.

[0007] Beneficial effects: The fixed structure includes a perimeter, and the micro switch is confined within the perimeter. The perimeter can limit the micro switch around its perimeter and prevent the micro switch from rotating.

[0008] In one optional embodiment, the fixing structure further includes one of a positioning post and a positioning hole, and the micro switch is provided with the other of the positioning post and the positioning hole, wherein the positioning post is inserted into the positioning hole.

[0009] Beneficial effects: The positioning pin and positioning hole work together to prevent the micro switch from rotating and further limit and fix the position of the micro switch, thereby achieving a firm fixation of the micro switch. This solves the problems of unstable installation and easy loosening of micro switches, and can accurately position the micro switch, thus improving the stability of the installation.

[0010] In one optional embodiment, the fixing structure further includes a limiting groove, in which the moving contact of the micro switch is disposed.

[0011] Beneficial effects: By setting the moving contact of the micro switch in the limiting groove, the direction of movement of the moving contact of the micro switch can be limited, preventing the micro switch from being accidentally triggered under complex working conditions.

[0012] In one optional embodiment, the extraction system further includes a slider, the gear plate is provided with a first limiting hole, the frame is provided with a second limiting hole, the first limiting hole and the second limiting hole are coaxially arranged, and when the movable part moves to a preset position, the slider is driven to slide and contact the moving contact.

[0013] Beneficial effects: By setting a first limiting hole in the gear plate and a second limiting hole in the frame, and setting the first limiting hole and the second limiting hole coaxially, the movement direction of the slider can be limited, so that the slider can only move along the axial direction of the first limiting hole or the second limiting hole. This ensures that when the moving part moves to the preset position, the slider is driven to slide and contact the moving contact, ensuring that the micro switch is accurately triggered.

[0014] In one alternative embodiment, the slider has a protrusion adapted to contact the moving contact.

[0015] Beneficial effect: By setting the protrusion, it can be ensured that the micro switch is accurately triggered when the moving part moves to the preset position.

[0016] In one optional embodiment, the slider has guide surfaces on both sides of one end near the movable part, and the guide surfaces are inclined surfaces or arc surfaces.

[0017] Beneficial effects: Guide surfaces are provided on both sides of the end of the slider near the moving part. The guide surfaces are inclined or arc surfaces, which can ensure that when the moving part moves to the preset position, the moving part can move along the guide surface to push the slider to slide, thereby ensuring that the micro switch is triggered.

[0018] In one optional embodiment, the fixing structure further includes a limiting part, which is disposed on one side of the limiting groove. The slider passes through the limiting part and can move axially relative to the limiting part along the first limiting hole.

[0019] Beneficial effects: The fixing structure also includes a limiting part, which is located on one side of the limiting groove. The slider passes through the limiting part and can move axially relative to the limiting part along the first limiting hole. The limiting part can further limit the sliding direction of the slider and ensure that it can contact the moving contact of the micro switch.

[0020] In one alternative embodiment, the slider includes a limiting platform adapted to abut against the upper part of the limiting groove.

[0021] Beneficial effects: By setting a limiting platform that abuts against the upper part of the limiting groove, the movement direction of the moving contact of the micro switch can be further limited.

[0022] In one optional embodiment, there are two fixing structures, two microswitches, namely a first microswitch and a second microswitch, and two sets of driving components, namely a first driving component and a second driving component. The first driving component is used to drive the extraction head component to move, and the second driving component is used to drive the powder receiving component to move. The first micro switch is disposed in one of the fixed structures. The first micro switch can detect whether the extraction head assembly is in a first preset position. The first drive assembly includes a first gear plate. The first gear plate is provided with a first abutting part. The first abutting part abuts against the side of the first micro switch away from the frame. The second micro switch is located on another of the fixed structures. The second micro switch can detect whether the powder receiving component is in a second preset position. The second drive component includes a second gear plate. The second gear plate is provided with a second abutting part. The second abutting part abuts against the side of the second micro switch away from the frame.

[0023] Beneficial effects: The first micro switch can detect whether the extraction head assembly is in the first preset position. The first micro switch is located in one of the fixed structures. The first drive assembly includes a first gear plate with a first abutting part. The first abutting part abuts against the side of the first micro switch away from the frame, thus firmly fixing the first micro switch and solving the problems of unstable installation and easy loosening of the micro switch. It can accurately position the first micro switch and improve the stability of the installation. If the first micro switch needs to be maintained or replaced, the first gear plate can be removed from the frame to remove the first micro switch, thus achieving the effect of convenient maintenance. The second micro switch can detect whether the powder receiving component is in a second preset position. The second micro switch is installed in one of the fixed structures. The second drive component includes a second gear plate with a second abutment. The second abutment abuts against the side of the second micro switch away from the frame, thus firmly fixing the second micro switch and solving the problems of unstable installation and easy loosening of the micro switch. It can accurately position the second micro switch and improve the stability of the installation. If the second micro switch needs to be maintained or replaced, the second gear plate can be removed from the frame to remove the second micro switch, thus achieving the effect of convenient maintenance.

[0024] In one optional embodiment, the extraction head assembly includes an extraction head, and the powder receiving assembly includes a powder cylinder. In the first preset position, the extraction head is in the upper limit position, and in the second preset position, the axis of the powder cylinder is collinear with the axis of the extraction head.

[0025] Secondly, the present invention also provides a coffee machine including the aforementioned extraction system. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of an extraction system according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of an extraction system according to an embodiment of the present invention after removing the first gear plate and the second gear plate; Figure 3 A partial cross-section of an extraction system according to an embodiment of the present invention. Figure 1 ; Figure 4 A partial cross-section of an extraction system according to an embodiment of the present invention. Figure 2 ; Figure 5 This is a partial schematic diagram of an extraction system according to an embodiment of the present invention. Figure 1 ; Figure 6 This is a partial schematic diagram of an extraction system according to an embodiment of the present invention. Figure 2 ; Figure 7 for Figure 5 A schematic diagram after removing the first gear pressure plate; Figure 8 for Figure 7 A schematic diagram after removing the first slider; Figure 9 for Figure 8 A schematic diagram after removing the first microswitch; Figure 10 A partial cross-section of an extraction system according to an embodiment of the present invention. Figure 3 ; Figure 11 This is a schematic diagram of an extraction system according to an embodiment of the present invention. Figure 2 ; Figure 12 This is a schematic diagram of an extraction system according to an embodiment of the present invention after the top cover plate has been removed; Figure 13 This is a schematic diagram of the extraction apparatus; Figure 14 This is a schematic diagram of the frame without the extraction device installed.

[0028] Explanation of reference numerals in the attached figures: 1. Frame; 101. Main frame; 102. Support; 103. Fixing structure; 1031. Surrounding edge; 1032. Positioning post; 1033. First rib; 1034. Second rib; 1035. Limiting groove; 1036. Limiting part; 2. Extraction head assembly; 201. Transmission structure; 2011. First transmission hole; 202. Extraction head; 3. Powder cylinder; 300. Second transmission hole; 301. Top rod; 302. Roller; 303. Boss; 401. First micro switch; 402. Second micro switch; 403. Moving contact; 404. Positioning hole; 501. First slider; 50 2. Second slider; 503. Protrusion; 504. Guide surface; 505. Limiting platform; 601. First motor; 602. First gear set; 603. First gear pressure plate; 6031. First abutment part; 604. First drive shaft; 701. Second motor; 702. Second gear set; 703. Second gear pressure plate; 7031. Second abutment part; 704. Second drive shaft; 8. First limiting hole; 9. Second limiting hole; 10. Upper cover plate; 11. Lower cover plate; 1101. First track; 1102. Second track; 12. Powder discharge funnel; 13. Powder scraping structure; 14. Buckle. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] In related technologies, fully automatic coffee machines are equipped with microswitches to detect the position and stroke of the extraction head. These microswitches are typically fixed directly to a bracket with screws, or installed and limited using a complex positioning structure. Direct screw fixing is prone to detection errors due to inaccurate installation, affecting the accuracy of coffee extraction. The complex positioning structure method is costly to manufacture and prone to damage during disassembly and assembly, impacting service life and ease of maintenance.

[0034] The following is combined Figures 1 to 14 The following describes embodiments of the present invention.

[0035] According to an embodiment of the present invention, an extraction system is provided, comprising: an extraction device, a frame 1, a micro switch, and a drive assembly.

[0036] The extraction device includes a movable part, which includes at least one of an extraction head assembly 2 and a powder receiving assembly. The extraction device is located on one side of the frame 1, and at least one fixed structure 103 is formed on the side of the frame 1 opposite to the extraction device. A micro switch is limited to the fixed structure 103 and can detect whether the movable part is in a preset position. The drive assembly includes a drive structure, a gear set, and a gear plate. The gear set connects the drive structure and the movable part. The gear plate axially limits the gear set. The gear plate has an abutment part that abuts against the side of the micro switch opposite to the frame 1.

[0037] In this embodiment, a fixing structure 103 is formed on the side of the frame 1 away from the extraction device. The micro switch is confined within the fixing structure 103, which limits the micro switch and prevents its position from shifting. The drive assembly includes a drive structure, a gear set, and a gear plate. The gear set connects the drive structure and the movable part. The gear plate axially limits the gear set and has an abutment portion that abuts against the side of the micro switch away from the frame 1. Therefore, the abutment portion prevents the micro switch from detaching from the fixing structure 103, further limiting and fixing the position of the micro switch. This achieves a firm fixation of the micro switch, solving the problems of unstable installation and easy loosening of the micro switch. It allows for accurate positioning of the micro switch and improves installation stability. If maintenance or replacement of the micro switch is required, the gear plate can be removed from the frame 1 to disassemble the micro switch, thus achieving convenient maintenance. Using a gear plate to further limit and fix the micro switch eliminates the need for additional parts, resulting in a simple overall structure and fewer parts.

[0038] Furthermore, the fixed structure 103 is formed on the frame 1, which can further reduce the number of parts and achieve a simple overall structure with fewer parts.

[0039] In one specific embodiment, the frame 1 includes a main frame 101 and a support 102, the support 102 is fixed together with the main frame 101, and the fixing structure 103 is formed on the support 102.

[0040] In one specific embodiment, the gear plate is connected to the frame 1 by screws.

[0041] Specifically, the frame 1 is provided with multiple screw posts, and the gear pressure plate is provided with screw holes. Screws pass through the screw holes and are fastened in the screw posts to fix the gear pressure plate on the frame 1.

[0042] In one embodiment, such as Figures 5 to 9 As shown, the fixed structure 103 includes a perimeter 1031, and the micro switch is confined within the perimeter 1031.

[0043] In this embodiment, the fixing structure 103 includes a perimeter 1031, and the micro switch is confined within the perimeter 1031. The perimeter 1031 can limit the micro switch around its perimeter to prevent the micro switch from rotating.

[0044] In one embodiment, the fixing structure 103 further includes one of a positioning post 1032 and a positioning hole 404, and the micro switch is provided with the other of the positioning post 1032 and the positioning hole 404, with the positioning post 1032 inserted into the positioning hole 404.

[0045] In this embodiment, the positioning post 1032 and the positioning hole 404 cooperate to prevent the micro switch from rotating and further limit and fix the position of the micro switch, thereby achieving a firm fixation of the micro switch. This solves the problem of unstable installation and easy loosening of the micro switch, and can accurately position the micro switch, thus improving the stability of the installation.

[0046] Specifically in one embodiment, such as Figures 7 to 9 As shown, the positioning post 1032 is located on the frame 1, and the positioning hole 404 is located on the micro switch.

[0047] Specifically, there are two positioning posts 1032 and two corresponding positioning holes 404.

[0048] As shown in the figure, on the frame 1, within the area enclosed by the perimeter 1031, there is a first rib 1033 and two second ribs 1034. The first rib 1033 is parallel to the length direction of the micro switch, and the second ribs 1034 are parallel to the width direction of the micro switch. The second ribs 1034 intersect with the first rib 1033. The micro switch can be supported on the first rib 1033 and the second ribs 1034, thereby preventing the micro switch from contacting the surface of the frame 1 and facilitating heat dissipation of the micro switch.

[0049] Specifically, the positioning post 1032 is connected to both the first rib 1033 and the second rib 1034, which can improve the connection strength.

[0050] In one embodiment, the fixing structure 103 further includes a limiting groove 1035, in which the moving contact 403 of the micro switch is disposed.

[0051] In this embodiment, by setting the moving contact 403 of the micro switch in the limiting groove 1035, the movement direction of the moving contact 403 of the micro switch can be limited, preventing the micro switch from being accidentally triggered under complex working conditions.

[0052] As shown in the figure, the moving contact 403 of the micro switch is limited in the limiting groove 1035 and can only move in the left and right directions.

[0053] In one embodiment, the extraction system further includes a slider, a gear plate having a first limiting hole 8, and a frame 1 having a second limiting hole 9. The first limiting hole 8 and the second limiting hole 9 are coaxially arranged. When the movable part moves to a preset position, the slider is driven to slide and comes into contact with the moving contact 403.

[0054] In this embodiment, by providing a first limiting hole 8 on the gear plate and a second limiting hole 9 on the frame 1, with the first limiting hole 8 and the second limiting hole 9 being coaxially arranged, the movement direction of the slider can be limited, so that the slider can only move along the axial direction of the first limiting hole 8 or the second limiting hole 9. This ensures that when the moving part moves to the preset position, the slider is driven to slide and contact the moving contact 403, ensuring that the micro switch is accurately triggered.

[0055] Specifically in one embodiment, such as Figure 3 and Figure 10 As shown, the slider has a protrusion 503, which is adapted to contact the moving contact 403.

[0056] In this embodiment, by providing the protrusion 503, it can be ensured that the micro switch is accurately triggered when the movable part moves to the preset position.

[0057] like Figure 3 and Figure 10 As shown, the upper and lower sides of the protrusion 503 are provided with inclined surfaces. When the movable part moves to the preset position, the slider is driven to slide towards the gear pressure plate. The protrusion 503 moves relative to the slider, and the moving contact 403 moves along the inclined surface to ensure that the micro switch is accurately triggered.

[0058] In one embodiment not shown in the figure, an elastic element can be provided between the slider and the frame 1 or the gear plate. When the slider loses its driving force, the elastic force of the elastic element can reset the slider.

[0059] In one embodiment, guide surfaces 504 are provided on both sides of the end of the slider near the movable part, and the guide surfaces 504 are inclined surfaces or arc surfaces.

[0060] In this embodiment, guide surfaces 504 are provided on both sides of the end of the slider near the movable part. The guide surfaces 504 are inclined or arc surfaces, which can ensure that when the movable part moves to the preset position, the movable part can move along the guide surfaces 504 to push the slider to slide, thereby ensuring that the micro switch is triggered.

[0061] In one embodiment, the fixing structure 103 further includes a limiting part 1036, which is disposed on one side of the limiting groove 1035. The slider passes through the limiting part 1036 and can move axially relative to the limiting part 1036 along the first limiting hole 8.

[0062] In this embodiment, the fixing structure 103 further includes a limiting part 1036, which is disposed on one side of the limiting groove 1035. The slider passes through the limiting part 1036 and can move relative to the limiting part 1036 along the axial direction of the first limiting hole 8. The limiting part 1036 can further limit the sliding direction of the slider and ensure that it can contact the moving contact 403 of the micro switch.

[0063] In one embodiment, the slider includes a limiting stage 505, which is adapted to abut against the upper part of the limiting groove 1035.

[0064] In this embodiment, by setting a limiting platform 505, which abuts against the upper part of the limiting groove 1035, the movement direction of the moving contact 403 of the micro switch can be further limited.

[0065] Specifically, the moving contact 403 of the micro switch is limited in the limiting groove 1035, and the limiting platform 505 abuts against the upper part of the limiting groove 1035. Therefore, the moving contact 403 of the micro switch can only move in the left and right directions.

[0066] In one embodiment, two fixed structures 103 are provided, two microswitches are provided, namely a first microswitch 401 and a second microswitch 402, and two sets of driving components are provided, namely a first driving component and a second driving component. The first driving component is used to drive the extraction head assembly 2 to move, and the second driving component is used to drive the powder receiving component to move. The first microswitch 401 is provided in one of the fixed structures 103. The first microswitch 401 can detect whether the extraction head assembly 2 is in a first preset position. The first driving component includes a first... The gear plate 603 has a first abutting part 6031, which abuts against the side of the first micro switch 401 away from the frame 1. The second micro switch 402 is located on another fixed structure 103 and can detect whether the powder receiving component is in a second preset position. The second drive component includes a second gear plate 703, which has a second abutting part 7031, which abuts against the side of the second micro switch 402 away from the frame 1.

[0067] In this embodiment, the first micro switch 401 can detect whether the extraction head assembly 2 is in a first preset position. The first micro switch 401 is disposed in one of the fixed structures 103. The first drive assembly includes a first gear plate 603. The first gear plate 603 is provided with a first abutment part 6031. The first abutment part 6031 abuts against the side of the first micro switch 401 away from the frame 1, so the first micro switch 401 can be firmly fixed, solving the problem of unstable installation and easy loosening of the micro switch. The first micro switch 401 can be accurately positioned, thus improving the installation stability. If the first micro switch 401 needs to be maintained or replaced, the first gear plate 603 can be removed from the frame 1 to remove the first micro switch 401, thus achieving the effect of convenient maintenance. The second micro switch 402 can detect whether the powder receiving component is in the second preset position. The second micro switch 402 is installed in one of the fixed structures 103. The second drive component includes a second gear plate 703. The second gear plate 703 is provided with a second abutment part 7031. The second abutment part 7031 abuts against the side of the second micro switch 402 away from the frame 1, so the second micro switch 402 can be firmly fixed, solving the problem of unstable installation and easy loosening of the micro switch. The second micro switch 402 can be accurately positioned, thus improving the stability of the installation. If the second micro switch 402 needs to be maintained or replaced, the second gear plate 703 can be removed from the frame 1 to remove the second micro switch 402, thus achieving the effect of convenient maintenance.

[0068] In one specific embodiment, the first drive assembly includes a first motor 601 and a first gear set 602. A first gear pressure plate 603 limits the axial movement of the first gear set 602. The first gear pressure plate 603 is specifically connected to the frame 1 by screws.

[0069] In one specific embodiment, the second drive assembly includes a second motor 701, a second gear set 702, and a second gear pressure plate 703 that axially limits the second gear set 702. The second gear pressure plate 703 is specifically connected to the frame 1 by screws.

[0070] Specifically, there are two sliders, namely a first slider 501 and a second slider 502. The first slider 501 can contact the moving contact 403 of the first micro switch 401, and the second slider 502 can contact the moving contact 403 of the second micro switch 402.

[0071] In one embodiment, the extraction head assembly 2 includes an extraction head 202, and the powder receiving assembly includes a powder cylinder 3. In the first preset position, the extraction head 202 is in the upper limit position, and in the second preset position, the axis of the powder cylinder 3 is collinear with the axis of the extraction head 202.

[0072] In one specific embodiment, the extraction system includes a controller electrically connected to a first motor 601 and a first micro switch 401. When the first micro switch 401 is triggered, the controller receives a signal and controls the first motor 601 to stop or reverse. The controller is also electrically connected to a second motor 701 and a second micro switch 402. When the second micro switch 402 is triggered, the controller receives a signal and controls the second motor 701 to stop or reverse.

[0073] In one specific embodiment, the extraction head assembly 2 includes a transmission structure 201, which can convert the rotation of the first gear set 602 into the movement of the extraction head 202.

[0074] In one embodiment, such as Figure 13 and Figure 14 As shown, the extraction head assembly 2 includes an extraction head 202 and a transmission structure 201. The first drive assembly is provided with one of a first drive shaft 604 and a first transmission hole 2011, and the transmission structure 201 is provided with the other of the first drive shaft 604 and the first transmission hole 2011. The first drive shaft 604 is inserted into the first transmission hole 2011, and the transmission structure 201 can convert the rotation of the first drive assembly into the movement of the extraction head 202; and / or, the powder receiving assembly includes a powder cylinder 3, the second drive assembly is provided with one of a second drive shaft 704 and a second transmission hole 300, and the powder cylinder 3 is provided with the other of the second drive shaft 704 and the second transmission hole 300, and the second drive shaft 704 is inserted into the second transmission hole 300.

[0075] In this embodiment, the first drive assembly has one of a first drive shaft 604 and a first drive hole 2011, and the transmission structure 201 has the other of the first drive shaft 604 and the first drive hole 2011. The first drive shaft 604 is inserted into the first drive hole 2011. Therefore, when installing the extraction device, the first drive shaft 604 is inserted into the first drive hole 2011 to achieve a transmission connection between the first drive assembly and the transmission structure 201, ensuring that the first drive assembly can drive the extraction head assembly 2 to move after the extraction device is installed in place. The second drive assembly has one of a second drive shaft 704 and a second drive hole 300, and the powder cylinder 3 has the other of the second drive shaft 704 and the second drive hole 300. The second drive shaft 704 is inserted into the second drive hole 300. Therefore, when installing the extraction device, the second drive shaft 704 is inserted into the second drive hole 300 to achieve a transmission connection between the second drive assembly and the powder cylinder 3, ensuring that the second drive assembly can drive the powder cylinder 3 to rotate after the extraction device is installed in place.

[0076] In one embodiment, such as Figure 11As shown, the extraction device includes an upper cover plate 10 and a lower cover plate 11, with the upper cover plate 10 connected to the lower cover plate 11. The extraction head assembly 2 and the powder receiving assembly are both located between the upper cover plate 10 and the lower cover plate 11.

[0077] In this embodiment, both the extraction head assembly 2 and the powder receiving assembly are located between the upper cover plate 10 and the lower cover plate 11. Therefore, only the upper cover plate 10 and the lower cover plate 11 are visible from the outside of the extraction device, resulting in a simple appearance.

[0078] In one embodiment, such as Figure 12 As shown, the extraction device also includes a powder discharge funnel 12, which is limited between the upper cover plate 10 and the lower cover plate 11 by a limiting structure, so as to facilitate the positioning and installation of the powder discharge funnel 12.

[0079] In one embodiment, the powder receiving assembly includes a powder cylinder 3 and a top rod 301. The first end of the top rod 301 is located inside the powder cylinder 3, and the second end of the top rod 301 is provided with a roller 302. The upper cover plate 10 and / or the lower cover plate 11 are provided with a first track 1101, and the roller 302 rolls along the first track 1101.

[0080] In this embodiment, a first track 1101 is provided on the upper cover plate 10 and / or the lower cover plate 11, and a roller 302 is provided at the second end of the top rod 301. The roller 302 rolls along the first track 1101, thereby enabling the top rod 301 to rotate smoothly when the powder cylinder 3 rotates. By integrating the first track 1101 onto the lower cover plate 11 and / or the upper cover plate 10, a small volume of the extraction device is ensured.

[0081] In one specific embodiment, the first track 1101 is disposed on the lower cover plate 11.

[0082] In one specific embodiment, the first track 1101 includes a first track segment, a second track segment, and a third track segment. The first track segment is an arc segment centered on the rotation center of the coffee cylinder 3, with a radius of R1. After the coffee cylinder 3 finishes receiving coffee from the coffee hopper 12, the second drive assembly drives the coffee cylinder 3 to rotate, and the roller 302 rolls along the first track segment. During this process, there is no relative movement between the push rod 301 and the coffee cylinder 3. When the roller 302 moves to the position where the first track segment and the second track segment meet, the axis of the coffee cylinder 3 is collinear with the direction of movement of the extraction head 202. Then, driven by the first drive assembly, the extraction head 202 presses into the coffee cylinder 3 to complete the coffee extraction. Afterward, the second drive assembly drives the coffee cylinder 3 to rotate, and the roller 302 rolls along the second track segment. The distance between the second track segment and the rotation center of the coffee cylinder 3 gradually decreases, so the push rod 301 moves relative to the coffee cylinder 3, pushing the extracted coffee powder out of the coffee cylinder 3 to cooperate with the scraper structure 13 to complete the waste cleaning. When the filter moves to the opening position of the powder cylinder 3, the roller 302 is located at the junction of the second track section and the third track section. Then the powder cylinder 3 continues to rotate, and the roller 302 rolls along the third track section. The third track section is an arc segment with the rotation center of the powder cylinder 3 as the center. The radius of the third track section is R2, which can avoid interference between the filter and the powder scraping structure 13.

[0083] In one embodiment, the powder cylinder 3 is provided with a boss 303, such as Figure 12 As shown, the upper cover plate 10 and / or the lower cover plate 11 are provided with a second track 1102, and the boss 303 is adapted to move along the second track 1102.

[0084] In this embodiment, the powder cylinder 3 is provided with a boss 303, and the upper cover plate 10 and / or the lower cover plate 11 are provided with a second track 1102. The boss 303 is adapted to move along the second track 1102, which can guide and limit the rotation direction of the powder cylinder 3.

[0085] In one specific embodiment, when the boss 303 abuts against the second slider 502, the powder cylinder 3 rotates to a position where the axis of the powder cylinder 3 is collinear with the moving direction of the extraction head 202.

[0086] In one specific embodiment, the extraction device is connected to the frame 1 via a snap-fit ​​14, allowing the extraction device to be detached from the frame 1 as a whole.

[0087] According to an embodiment of the present invention, another aspect provides a coffee machine including the extraction system provided in the above embodiments.

[0088] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. An extraction system, characterized in that, include: An extraction apparatus, comprising a movable part, the movable part including at least one of an extraction head assembly (2) and a powder receiving assembly; The frame (1) is provided on one side of the extraction device, and the side of the frame (1) away from the extraction device is formed with at least one fixing structure (103). A micro switch is located in the fixed structure (103), and the micro switch is capable of detecting whether the movable part is in a preset position; The drive assembly includes a drive structure, a gear set and a gear plate. The gear set connects the drive structure and the movable part. The gear plate limits the axial movement of the gear set. The gear plate has an abutment part that abuts against the side of the micro switch away from the frame (1).

2. The extraction system according to claim 1, characterized in that, The fixed structure (103) includes a perimeter (1031), and the micro switch is confined within the perimeter (1031).

3. The extraction system according to claim 1, characterized in that, The fixing structure (103) further includes one of a positioning post (1032) and a positioning hole (404). The micro switch is provided with the other of the positioning post (1032) and the positioning hole (404). The positioning post (1032) is inserted into the positioning hole (404).

4. The extraction system according to claim 1, characterized in that, The fixed structure (103) also includes a limiting groove (1035), in which the moving contact (403) of the micro switch is located.

5. The extraction system according to claim 4, characterized in that, The extraction system also includes a slider. The gear plate is provided with a first limiting hole (8), and the frame (1) is provided with a second limiting hole (9). The first limiting hole (8) and the second limiting hole (9) are coaxially arranged. When the movable part moves to the preset position, the slider is driven to slide and comes into contact with the moving contact (403).

6. The extraction system according to claim 5, characterized in that, The slider is provided with a protrusion (503) which is adapted to contact the moving contact (403).

7. The extraction system according to claim 5, characterized in that, The slider is provided with guide surfaces (504) on both sides of the end near the movable part. The guide surfaces (504) are inclined surfaces or arc surfaces.

8. The extraction system according to claim 5, characterized in that, The fixing structure (103) further includes a limiting part (1036), which is located on one side of the limiting groove (1035). The slider passes through the limiting part (1036) and can move relative to the limiting part (1036) along the axial direction of the first limiting hole (8).

9. The extraction system according to claim 5, characterized in that, The slider includes a limiting platform (505) adapted to abut against the upper part of the limiting groove (1035).

10. The extraction system according to any one of claims 1 to 9, characterized in that, The fixed structure (103) is provided in two parts, the micro switch is provided in two parts, namely the first micro switch (401) and the second micro switch (402), and the driving component is provided in two sets, namely the first driving component and the second driving component. The first driving component is used to drive the extraction head component (2) to move, and the second driving component is used to drive the powder receiving component to move. The first micro switch (401) is disposed on one of the fixed structures (103). The first micro switch (401) can detect whether the extraction head assembly (2) is in a first preset position. The first drive assembly includes a first gear plate (603). The first gear plate (603) is provided with a first abutting part (6031). The first abutting part (6031) abuts against the side of the first micro switch (401) away from the frame (1). The second micro switch (402) is disposed on another fixed structure (103). The second micro switch (402) can detect whether the powder receiving component is in a second preset position. The second drive component includes a second gear plate (703). The second gear plate (703) is provided with a second abutment (7031). The second abutment (7031) abuts against the side of the second micro switch (402) away from the frame (1).

11. The extraction system according to claim 10, characterized in that, The extraction head assembly (2) includes an extraction head (202), and the powder receiving assembly includes a powder cylinder (3). In the first preset position, the extraction head (202) is in the upper limit position, and in the second preset position, the axis of the powder cylinder (3) is collinear with the axis of the extraction head (202).

12. A coffee machine, characterized in that, The extraction system included in any one of claims 1 to 10.

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