Pushing slag mechanism and coffee machine brewing system

Abstract

An embodiment of the present invention provides a slag pushing mechanism and a coffee machine brewing system. The slag pushing mechanism includes: a base fixed to the body of the coffee machine brewing system; a slag pushing assembly rotatably disposed on the base and having a state of waiting to push slag and a state of pushing slag; a pushing member disposed on the lead screw assembly of the coffee machine brewing system and used to push the slag pushing assembly to rotate when moving along a first direction with the lead screw assembly, so that the slag pushing assembly rotates from the state of pushing slag to the state of waiting to push slag; a limiting assembly disposed on the base and capable of moving in the moving direction of the lead screw assembly, used to limit the slag pushing assembly when the slag pushing assembly rotates to the state of waiting to push slag, so that the slag pushing assembly remains in the state of waiting to push slag, and used to release the limit on the slag pushing assembly when the lead screw assembly moves to the slag discharging position along a second direction opposite to the first direction, so that the slag pushing assembly rotates to the state of pushing slag. The slag pushing mechanism has a simple structure, is reliable and practical, and can make the slag cake fall smoothly.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and particularly relates to a slag pushing mechanism and a coffee machine brewing system. Background Art

[0002] There are relatively many types of existing coffee machines, and fully automatic coffee machines are the most convenient. The coffee machine continuously completes processes such as grinding beans, brewing, and removing residue, bringing convenience to consumers. However, the structures of fully automatic coffee machines are relatively complex, and the residue cake drops smoothly. For example, a Chinese invention patent with the authorization announcement number CN 213216538 U discloses a coffee brewing system and a coffee machine. The coffee brewing system includes a machine body, a brewing head assembly, a brewing chamber assembly, and a driving device. When unloading the residue after brewing, there is a problem of unsmoothness in this coffee brewing system. Summary of the Invention

[0003] In view of the above problems existing in the prior art, the purpose of the embodiments of the present invention is to provide a slag pushing mechanism with a simple structure, which is conducive to the smooth unloading of residue in the coffee machine brewing system.

[0004] The technical solution adopted in the embodiments of the present invention is a slag pushing mechanism applied to a coffee machine. The coffee machine brewing system includes a machine body and a lead screw assembly disposed in the inner cavity of the machine body. The slag pushing mechanism includes:

[0005] A base fixed to the machine body of the coffee machine brewing system;

[0006] A slag pushing component rotatably disposed on the base, and having a slag pushing state outside the inner cavity of the machine body and a slag pushing state in the inner cavity of the machine body;

[0007] A pushing component disposed on the lead screw assembly of the coffee machine brewing system, configured to push the slag pushing component to rotate when moving along a first direction with the lead screw assembly, so that the slag pushing component is switched from the slag pushing state to the slag pushing state;

[0008] A limiting component disposed on the base and capable of moving in the moving direction of the lead screw assembly, configured to limit the slag pushing component when the slag pushing component is switched to the slag pushing state, so that the slag pushing component remains in the slag pushing state, and configured to release the limit on the slag pushing component when the lead screw assembly moves to the slag unloading position along a second direction opposite to the first direction, so that the slag pushing component is switched to the slag pushing state.

[0009] The slag pushing mechanism of the embodiments of the present invention has a clever structural design, which can not only achieve smooth slag unloading, but also save the power mechanism, simplify the structure, and reduce the cost.

[0010] In an optional embodiment, the slag pushing assembly includes a rotating shaft and a push plate fixed on the rotating shaft and extending in the radial direction of the rotating shaft, the rotating shaft is rotatably arranged on the base, and the axial direction of the rotating shaft is consistent with the moving direction of the screw assembly; the machine body is provided with an opening connected to its inner cavity, and when the rotating shaft rotates, the push plate is driven to enter and exit the inner cavity through the opening to switch between the slag pushing state and the slag waiting to be pushed state. The slag pushing assembly has a simple and reasonable structure and occupies less space.

[0011] In an optional embodiment, the pushing component is a rod-shaped body formed by extending the screw assembly along the first direction, the free end of the rod-shaped body has a first inclined surface, and the slag pushing assembly is provided with a second inclined surface. When the pushing component moves along the first direction with the screw assembly, the first inclined surface of the pushing component acts on the second inclined surface of the slag pushing assembly to push the slag pushing assembly to rotate, so that it switches from the slag pushing state to the slag waiting state. In this way, the structure can be simplified, and the inclined surface cooperation facilitates the slag pushing assembly to rotate during the movement of the screw assembly.

[0012] In an optional embodiment, a third inclined surface is provided at one end of the rotating shaft facing the second direction, a fourth inclined surface matching the third inclined surface is provided in the base, the first inclined surface of the pushing component acts on the second inclined surface of the slag pushing assembly, and when the slag pushing assembly is pushed to rotate, the fourth inclined surface acts on the third inclined surface to push the rotating shaft to move toward the first direction, the push plate is misaligned with the limit assembly, and the limit assembly avoids the push plate so that the push plate can rotate to the state to be pushed. By providing the matching third and fourth inclined surfaces, the slag pushing assembly moves while rotating to avoid the limit assembly, so as to prevent the limit assembly from affecting its rotation.

[0013] In an optional embodiment, the slag pushing assembly further includes a first elastic member, the first elastic member acting on the rotating shaft, and being used to apply a force to the rotating shaft to move it toward the second direction, so that when the pushing component releases the pushing of the slag pushing assembly, the rotating shaft moves along the second direction to a position opposite to the limiting assembly, and is limited by the limiting assembly to be kept in the state to be pushed. The slag pushing assembly can be automatically reset by providing the first elastic member, so that it is limited by the limiting assembly to be kept in the state to be pushed.

[0014] In an optional embodiment, the limit assembly includes a slide bar, a toggle block and a second elastic member, the slide bar is arranged on the base and can slide along the base in the moving direction of the screw assembly, the toggle block is arranged at one end of the slide bar and is located outside the base, and the other end of the slide bar forms a limit portion, the toggle block can drive the slide bar to move along the second direction under the action of an external force, so that the limit portion of the slide bar is separated from the push plate to release the limit on the slag pushing assembly, and the second elastic member is used to apply a force to the slide bar to move it toward the first direction, so as to limit the push plate in the state to be pushed. The above-mentioned limit assembly has a simple and reasonable structure, a smooth action process, and is conducive to limiting and releasing the limit of the push plate.

[0015] In an optional embodiment, the screw assembly is provided with a slide groove extending along its moving direction, and the slide groove is blocked at one end in the first direction to form a stopper; the toggle block passes through the housing of the machine body and extends into the slide groove, and when the screw assembly moves along the second direction until the stopper of the slide groove abuts against the toggle block, the toggle block and the slide rod are driven to move together along the second direction, so that the slide rod is separated from the push plate. In this way, there is no need to set up a separate power source, simplifying the structure and reducing costs.

[0016] In an optional embodiment, a torsion spring is provided on the rotating shaft, and the torsion spring is used to apply a force to the slag pushing assembly to switch it from the slag pushing state to the slag pushing state.

[0017] The embodiment of the present invention also provides a coffee machine brewing system, including a machine body, a screw assembly, a brewing chamber assembly and a brewing head assembly, wherein the machine body has an inner cavity, the brewing head assembly is arranged at one end of the inner cavity, the screw assembly and the brewing chamber assembly are arranged at the other end of the inner cavity, and can move linearly in the inner cavity, and the coffee machine brewing system also includes a slag pushing mechanism as described in any of the above embodiments, the slag pushing mechanism is arranged on the machine body, and can enter and exit the inner cavity of the machine body through an opening on the machine body, so as to push the slag cake to fall when the coffee machine brewing system is in a slag unloading state. The coffee machine brewing system of the embodiment of the present invention has a good slag unloading effect.

[0018] In an optional embodiment, the inner cavity of the machine body is gradually inclined upward along the first direction, so that the amount of powder can be increased and the powder can be evenly loaded, thereby improving the taste of coffee.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0020] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the accompanying drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and are used together with the description and the claims to explain the embodiments of the invention. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts.

[0022] Figure 1 An exploded view of the slag pushing mechanism according to an embodiment of the present invention is shown, and the machine body and the lead screw assembly are also shown.

[0023] Figure 2 A schematic structural diagram of the slag pushing mechanism according to an embodiment of the present invention applied to a coffee machine brewing system is shown.

[0024] Figure 3 A schematic structural diagram of the slag pushing component according to an embodiment of the present invention is shown.

[0025] Figure 4 and Figure 5 Schematic structural diagrams of the upper plate from different perspectives according to an embodiment of the present invention are shown respectively.

[0026] Figure 6 A schematic structural diagram of the lead screw assembly according to an embodiment of the present invention is shown.

[0027] Figure 7 A schematic structural diagram of the lead screw assembly according to an embodiment of the present invention when the first inclined surface thereof abuts against the second inclined surface of the slag pushing component is shown.

[0028] Figure 8 is Figure 7 An enlarged view of part A in

[0029] Figure 9 A schematic structural diagram of the lead screw assembly according to an embodiment of the present invention when the first inclined surface thereof crosses over the second inclined surface of the slag pushing component is shown.

[0030] Figure 10 is Figure 9 An enlarged view of part B in

[0031] Figure 11 A schematic structural diagram of the base according to an embodiment of the present invention is shown.

[0032] Figure 12 and Figure 13 Schematic structural diagrams of the slag pushing component and the limit component installed on the base according to an embodiment of the present invention are shown respectively.

[0033] Figures 14 to 17 Cross-sectional views of partial structures of the coffee machine brewing system according to an embodiment of the present invention in different working states are shown respectively.

[0034] Figure 18 They are respectively exploded views of a brewing head assembly according to an embodiment of the present invention, and also show a brewing chamber assembly and a screw assembly.

[0035] Figure 19 It is a cross-sectional view of the brewing head assembly according to an embodiment of the present invention, wherein the connecting pipe is located at a position opposite to the through hole and the pressure relief port.

[0036] Figure 20 It is a cross-sectional view of the brewing head assembly according to an embodiment of the present invention, wherein the connecting pipe is located at a position where the through hole and the pressure relief port are staggered.

[0037] Reference numerals:

[0038] 100-brew head assembly;

[0039] 110-seat body; 111-bottom supporting part; 112-guide part; 113-guide rib; 114-trigger switch; 115-switch bracket;

[0040] 120-moving part; 121-protruding part; 122-water outlet; 123-triggering part; 124-elastic part;

[0041] 130-water inlet joint; 131-water inlet; 132-water inlet pipeline; 134-water outlet pipeline; 135-pressure relief port; 136-pressure relief pipeline;

[0042] 140-connecting pipe; 141-through hole; 142-sealing ring;

[0043] 150-filter screen; 151-filter screen bracket; 152-sealing gasket; 210-base; 211-rotating shaft cavity; 212-arc-shaped protrusion; 213-fourth inclined surface; 214-guide block;

[0044] 220-slag pushing assembly; 221-rotating shaft; 222-push plate; 223-bump; 224-second inclined surface; 225-third inclined surface; 226-first elastic member; 227-torsion spring;

[0045] 230-pushing member; 231-first inclined surface;

[0046] 240-limiting assembly; 241-sliding rod; 242-sliding block; 243-second elastic member; 244-bolt; 245-limiting part;

[0047] 300-screw assembly; 310-slideway; 320-stopper; 330-guide groove;

[0048] 400-driving device;

[0049] 500 - Brewing room components;

[0050] 600 - Body; 610 - Upper plate; 620 - Opening; 630 - Lower plate; 640 - Main bracket;

[0051] 700 - Slag cake. Detailed implementation manners

[0052] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] In order to keep the following description of the embodiments of the present invention clear and concise, the detailed descriptions of known functions and known components are omitted in the present invention.

[0055] An embodiment of the present invention provides a slag pushing mechanism, which is applied to a coffee machine brewing system, especially a fully automatic coffee machine brewing system. The coffee machine brewing system includes a body 600 and a lead screw assembly 300 and a brewing chamber assembly 500 disposed in the inner cavity of the body 600. The brewing chamber assembly 500 moves linearly in the inner cavity under the action of the lead screw assembly 300. The slag pushing mechanism is disposed on the body 600 and is used to push the slag cake 700 in the inner cavity after coffee brewing is completed, so that it can fall smoothly, realizing smooth slag discharge of the coffee machine brewing system.

[0056] For the convenience of the following description, one end of the machine body 600 where the brewing head assembly 100 is provided is defined as the front end, and one end of the machine body 600 where the lead screw assembly 300 is provided is defined as the rear end. When the lead screw assembly 300 moves towards the brewing head assembly 100, it is defined as moving forward, and when the lead screw assembly 300 moves away from the brewing head assembly 100, it is defined as moving backward. And the direction in which the lead screw assembly 300 moves towards the brewing head assembly 100 is the first direction, and the direction in which the lead screw assembly 300 moves away from the brewing head assembly 100 is the second direction.

[0057] As Figures 1 to 13 shown, the slag pushing mechanism of the embodiment of the present invention includes a base 210, a slag pushing assembly 220, a pushing member 230 and a limiting assembly 240. The base 210 is fixed on the machine body 600 of the coffee machine brewing system. The machine body 600 may include an upper plate 610, a lower plate 630 and a main bracket 640 disposed between the upper plate 610 and the lower plate 630. Refer to Figure 1 .

[0058] The slag pushing assembly 220 is rotatably disposed on the base 210 and has a slag pushing state outside the inner cavity of the machine body 600 and a slag pushing state inside the inner cavity of the machine body 600. That is, the slag pushing assembly 220 can rotate into or out of the inner cavity to switch between the slag pushing state and the non-slag pushing state, so as to avoid interference with the brewing chamber assembly 500 by the slag pushing assembly 220 in the inner cavity during the coffee brewing process, and during the slag discharging process, the rotating force of the slag pushing assembly 220 acts on the slag cake 700 to push the slag cake 700 out of the inner cavity to achieve smooth slag discharging.

[0059] The pushing member 230 is disposed on the lead screw assembly 300 of the coffee machine brewing system and is used to push the slag pushing assembly 220 to rotate when moving along the first direction with the lead screw assembly 300, so that the slag pushing assembly 220 is switched from the slag pushing state to the non-slag pushing state. That is, when there is no external force, the slag pushing assembly 220 is in the inner cavity of the coffee machine brewing system and remains in the slag pushing state. When the lead screw assembly 300 moves towards the brewing head assembly 100 under the drive of the drive device 400, it drives the pushing member 230 to move together, so that the pushing member 230 acts on the slag pushing assembly 220 to switch the slag pushing assembly 220 outside the inner cavity and into the non-slag pushing state.

[0060] The limiting component 240 is provided on the base 210 and can move in the moving direction of the lead screw assembly 300. It is used to limit the slag pushing component 220 when the slag pushing component 220 switches to the state of waiting for slag pushing, so that the slag pushing component 220 remains in the state of waiting for slag pushing, and is used to release the limit on the slag pushing component 220 when the lead screw assembly 300 moves in the second direction (retreating direction) opposite to the first direction (advancing direction) to the slag discharging position, so that the slag pushing component 220 rotates to the slag pushing state. By setting the limiting component 240, the slag pushing component 220 can be limited or the limit can be released according to the working state of the coffee machine brewing system, so that the slag pushing component 220 can not only remain in the state of waiting for slag pushing outside the inner cavity, but also rotate to the slag pushing state of entering the inner cavity.

[0061] The slag pushing mechanism of the embodiment of the present invention uses the power of the movement of the lead screw assembly 300 to push the slag pushing component 220 to switch between the slag pushing state and the state of waiting for slag pushing, and the state of the slag pushing component 220 is associated with the working state of the coffee machine brewing system. The structural design is ingenious, which can not only achieve smooth slag discharging, but also save the power mechanism, simplify the structure and reduce the cost.

[0062] In some embodiments, such as Figure 1 and Figure 3 shown, the slag pushing component 220 includes a rotating shaft 221 and a pushing plate 222 fixed on the rotating shaft 221 and extending along the radial direction of the rotating shaft 221. The rotating shaft 221 is rotatably provided on the base 210, and the axial direction of the rotating shaft 221 is consistent with the moving direction of the lead screw assembly 300. As Figure 4 and Figure 5 shown, an opening 620 communicating with the inner cavity of the machine body 600 is provided on the upper plate 610 of the machine body 600. When the rotating shaft 221 rotates, it drives the pushing plate 222 to enter and exit the inner cavity through the opening 620, so as to switch between the slag pushing state and the state of waiting for slag pushing. It can be understood that the state of the slag pushing component 220 actually refers to the state of the pushing plate 222. Figure 4 The pushing plate 222 shown is in the slag pushing state, Figure 5 The pushing plate 222 shown is in the state of waiting for slag pushing. The slag pushing component 220 realizes rotation through the rotating shaft 221 and realizes slag pushing through the pushing plate 222, forming a structure similar to a swing arm, which not only has a good slag pushing effect, but also has a simple and reasonable structure and occupies less space.

[0063] In some embodiments, such as Figure 1 and Figure 6As shown, the pushing member 230 is a rod-shaped body formed by extending the lead screw assembly 300 in the first direction. The free end of the rod-shaped body has a first inclined surface 231, and a second inclined surface 224 is provided on the slag pushing assembly 220. When the pushing member 230 moves along the first direction with the lead screw assembly 300, the first inclined surface 231 of the pushing member 230 acts on the second inclined surface 224 of the slag pushing assembly 220, pushing the slag pushing assembly 220 to rotate, so that it switches from the slag pushing state to the state of waiting for slag pushing. Integrally forming the pushing member 230 on the lead screw assembly 300 can simplify the structure and enhance the structural strength. Moreover, through the cooperating inclined surface structure, it is beneficial to push the slag pushing assembly 220 to rotate during the movement of the lead screw assembly 300 to achieve the state switch.

[0064] The second inclined surface 224 can be directly formed on one side of the push plate 222 facing the rear end of the machine body 600, or a convex block 223 can be provided at the connection between the push plate 222 and the rotating shaft 221. The convex block 223 is connected to the rotating shaft 221, and a second inclined surface 224 is formed on the side of the convex block 223 facing the rear end of the machine body 600. See Figure 3 .

[0065] The lead screw assembly 300 drives the pushing member 230 to move forward and gradually approaches the slag pushing assembly 220, so that the first inclined surface 231 of the pushing member 230 contacts the second inclined surface 224 of the slag pushing assembly 220. As Figure 7 and Figure 8 shown. At this time, the pushing member 230 is in a state of about to push the slag pushing assembly 220. The pushing member 230 continues to move forward with the lead screw assembly 300, pushing the slag pushing assembly 220 to rotate in the direction of the inner cavity where the push plate 222 rotates out. At the same time, the pushing member 230 crosses the second inclined surface 224 and enters below the push plate 222. As Figure 9 and Figure 10 shown. In this way, the slag pushing assembly 220 is switched from the slag pushing state to the state of waiting for slag pushing.

[0066] In some embodiments, as Figure 3 shown, one end of the rotating shaft 221 facing the second direction (the direction facing the rear end of the machine body 600) (for the convenience of the following description, this end is defined as the first end) is provided with a third inclined surface 225. As Figure 11As shown, a fourth inclined surface 213 cooperating with the third inclined surface 225 is provided in the base 210. When the pushing component 230 moves with the screw assembly 300 to the point where its first inclined surface 231 acts on the second inclined surface 224 of the slag pushing assembly 220, the slag pushing assembly 220 is pushed to rotate. When the slag pushing assembly 220 rotates, the fourth inclined surface 213 applies a force to the third inclined surface 225, pushing the rotating shaft 221 to move toward the first direction, so that the push plate 222 is misaligned with the limit assembly 240, and the limit assembly 240 avoids the push plate 222, so that the push plate 222 can rotate to the state of waiting for slag pushing. By providing the matching third inclined surface 225 and fourth inclined surface 213, the slag pushing assembly 220 moves while rotating to avoid the limit assembly 240, so as to prevent the limit assembly 240 from affecting its rotation.

[0067] Specifically, Figure 11 As shown, the base 210 has a shaft cavity 211, one end of the shaft cavity 211 is provided with an arc-shaped protrusion 212 adapted to the first end circumference of the shaft 221, and the side of the arc-shaped protrusion 212 facing the second direction forms a fourth inclined surface 213. Figure 3 As shown, the circumferential part of the first end of the rotating shaft 221 is cut to form a notch, and the end of the notch on one side along the axial direction forms a third inclined surface 225, the arc-shaped protrusion 212 is embedded in the notch, and the fourth inclined surface 213 cooperates with the third inclined surface 225. In this way, when the slag pushing assembly 220 is pushed by the pushing component 230, due to the existence of the fourth inclined surface 213, it rotates and moves axially. The rotation makes the push plate 222 come out of the inner cavity, and the movement makes the push plate 222 avoid the limit assembly 240 and continue to rotate. The design is ingenious, and rotation and movement are achieved simultaneously through a simple structure.

[0068] In some embodiments, Figure 3 As shown, and combined with Figure 12 and Figure 13 , the slag pushing assembly 220 also includes a first elastic member 226. The first elastic member 226 acts on the rotating shaft 221, and is used to apply a force to the rotating shaft 221 to move it toward the second direction, so that when the pushing component 230 releases the pushing of the slag pushing assembly 220, the rotating shaft 221 moves along the second direction to a position opposite to the limiting assembly 240, and is limited by the limiting assembly 240 to remain in the state of waiting to push the slag. By providing the first elastic member 226, the slag pushing assembly 220 can be automatically reset to a position that can be limited by the limiting assembly 240, which is conducive to keeping the slag pushing assembly 220 in the state of waiting to push the slag. The limiting assembly 240 and the slag pushing assembly 220 cooperate ingeniously.

[0069] In some embodiments, Figure 12 and Figure 13As shown, the limit component 240 includes a slide bar 241, a toggle block 242, and a second elastic member 243. The slide bar 241 is disposed on the base 210 and can slide along the base 210 in the moving direction of the lead screw assembly 300 (i.e., the axial direction of the slide bar 241). The toggle block 242 is disposed at one end of the slide bar 241 and is located outside the base 210, and a limit portion 245 is formed at the other end of the slide bar 241. For example, the toggle block 242 can be fixed to one end of the slide bar 241 by a bolt 244. The slide bar 241 reciprocates along its axial direction and can switch between a limit state and a limit release state. That is, when the slide bar 241 moves toward the push plate 222, the slide bar 241 stops and limits the push plate 222 and is in the limit state. At this time, the push plate 222 cannot rotate and remains in the slag pushing waiting state. When the slide bar 241 moves away from the push plate 222, the slide bar 241 disengages from the push plate 222, and the limit on the push plate 222 is released and is in the limit release state. Specifically, the acting force for the slide bar 241 to move toward the push plate 222 is provided by the second elastic member 243, and the acting force for the slide bar 241 to move away from the push plate 222 is provided by the toggle block 242. The second elastic member 243 is used to apply an acting force to the slide bar 241 to move it in the first direction (i.e., the direction close to the push plate 222) to limit the push plate 222 in the slag pushing waiting state. When the toggle block 242 is subjected to an acting force in the second direction, it drives the slide bar 241 to move in the second direction (i.e., the direction away from the push plate 222), so that the limit portion 245 of the slide bar 241 disengages from the push plate 222 and releases the limit on the slag pushing assembly 220. The structure of the above limit component 240 is simple and reasonable, the action process is smooth, and it is beneficial to limit and release the limit on the push plate 222.

[0070] Further, as Figure 6 shown, a chute 310 extending along its moving direction is provided on the lead screw assembly 300. One end of the chute 310 in the first direction is blocked to form a stop portion 320. The toggle block 242 passes through the upper plate 610 of the machine body 600 and extends into the chute 310. When the lead screw assembly 300 moves in the second direction until the stop portion 320 of the chute 310 abuts against the toggle block 242, it drives the toggle block 242 and the slide bar 241 to move together in the second direction, so that the slide bar 241 disengages from the push plate 222. By associating the toggle block 242 of the limit component 240 with the lead screw assembly 300 and using the power of the movement of the lead screw assembly 300 to drive the slide bar 241 to retract and release the limit on the push plate 222, a separate power source can be avoided, the structure can be simplified, and the cost can be reduced.

[0071] Further, as Figure 3 、 Figure 12 and Figure 13As shown, a torsion spring 227 is provided on the rotating shaft 221. The torsion spring 227 is used to apply a force to the slag pushing assembly 220 to switch it from the state of waiting to push slag to the state of pushing slag. When the limit assembly 240 retreats under the drive of the lead screw assembly 300 and disengages from the push plate 222, the rotating shaft 221 rotates under the action of the torsion spring 227, causing the push plate 222 to automatically turn to the slag pushing state, realizing automatic slag pushing.

[0072] Furthermore, a guide block 214 is also provided on the base 210. Refer to Figure 4 . A guide groove 330 extending along its moving direction is provided on the lead screw assembly 300. The guide block 214 passes through the upper plate 610 of the machine body 600 and extends into the guide groove 330, which is used to guide the movement of the lead screw assembly 300 in the inner cavity of the machine body 600, ensuring that the lead screw assembly 300 moves along the established direction without deviation.

[0073] The slag pushing mechanism of the embodiment of the present invention can automatically push slag after coffee brewing is completed, ensuring smooth slag discharging of the coffee brewing system of the coffee machine, and is simple in structure, reliable and practical.

[0074] The embodiment of the present invention also provides a coffee machine brewing system. As Figures 14 to 17 shown, the coffee machine brewing system includes a machine body 600, a lead screw assembly 300, a brewing chamber assembly 500, a brewing head assembly 100, and a driving device 400. The machine body 600 has an inner cavity. The brewing head assembly 100 is provided at one end of the inner cavity, and the lead screw assembly 300 is provided at the other end of the inner cavity. The brewing chamber assembly 500 is provided in the inner cavity and is connected to the lead screw assembly 300. The driving device 400 drives the brewing chamber assembly 500 to move linearly in the inner cavity through the lead screw assembly 300 to approach or move away from the brewing head assembly 100 to realize coffee brewing. The coffee machine brewing system further includes the slag pushing mechanism in any of the above embodiments. The slag pushing mechanism is provided on the machine body 600 and can enter and exit the inner cavity of the machine body 600 through an opening 620 on the machine body 600 to push the slag cake 700 to fall when the coffee machine brewing system is in the slag pushing state. The coffee machine brewing system of the embodiment of the present invention has the advantage of good slag discharging effect due to the above-mentioned slag pushing mechanism.

[0075] In some embodiments, continuing to combine Figures 14 to 17 , the inner cavity of the machine body 600 is gradually inclined upward along the first direction. The inclined setting can hold more coffee powder than the horizontal setting. The powder freely falls into the brewing chamber under the action of gravity, and the stacking height does not exceed the powder inlet. The inclined setting can hold more than the horizontal setting. When the powder pushing rod in the brewing chamber advances with the same force, the powder cake density is more uniform in the inclined setting than in the horizontal setting, improving the coffee taste.

[0076] The setting of the slag pushing mechanism can solve the problem of difficult slag discharging in the case of the inclined setting of the inner cavity of the machine body 600.

[0077] The inclination angle of the inner cavity of the machine body 600 can be selected and determined according to actual needs. For example, the inclination angle can be 30 degrees to 75 degrees. This angle range can meet the needs of large and uniform powder loading and smooth slag unloading under the action of the slag pushing mechanism.

[0078] like Figures 18 to 20 As shown, the brewing head assembly 100 includes a seat body 110, a moving part 120, a water inlet joint 130 and a connecting pipe 140. The brewing head assembly 100 is fixed to one end of the inner cavity of the body 600 through the seat body 110. The moving part 120 is arranged on the seat body 110, and can move linearly relative to the seat body 110 under the action of an external force. The water inlet joint 130 is fixed on the seat body 110, and the water inlet joint 130 has a water inlet 131, a water outlet and a pressure relief port 135 connected to its inner cavity. Water can be supplied to the water inlet joint 130 through the water inlet 131, the water in the water inlet joint 130 can be discharged through the water outlet, and the pressure in the water inlet joint 130 can be relieved through the pressure relief port 135. One end of the connecting pipe 140 is fixed to the moving part 120 and communicated with the inner cavity of the machine body through the moving part 120. The other end of the connecting pipe 140 extends into the inner cavity of the water inlet joint 130 through the water outlet of the water inlet joint 130. A through hole 141 is provided on the wall of the part of the connecting pipe 140 extending into the water inlet joint 130. The connecting pipe 140 can move along its axial direction driven by the moving part 120 so that the through hole 141 and the pressure relief port 135 are staggered or sealed and docked.

[0079] The water inlet connector 130 and the connecting pipe 140 of the brewing head assembly 100 together constitute a water channel structure that can switch between water inlet and pressure relief. Through the water channel structure, water can be supplied to the brewing chamber assembly 500 of the coffee machine, and pressure and water can be released from the inner cavity of the machine body, so as to achieve coffee brewing and keep the inner cavity of the machine body and the brewing chamber assembly dry after brewing. At the same time, the water and pressure in the water channel structure itself can be released to keep the water channel structure dry, which is conducive to ensuring the taste of the next coffee brewing. Moreover, after the pressure is released, the slag spraying is avoided, the slag cake is guaranteed to be intact, and the slag pushing assembly 220 is conducive to assisting in slag unloading.

[0080] In some embodiments, Figure 18 As shown, the seat body 110 includes a base portion 111 and a guide portion 112, wherein the guide portion 112 is convexly disposed on the base portion 111 and is in the shape of a hollow column. The water inlet joint 130 extends from the side of the base portion 111 away from the guide portion 112 into the base portion 111 and is fixed to the base portion 111. The moving component 120 is sleeved outside the guide portion 112. The connecting pipe 140 is disposed in the hollow part of the guide portion 112, and one end is connected to the moving component 120, and the other end extends into the water inlet joint 130. The structural design is compact and can reduce the volume of the brewing head assembly 100.

[0081] In some embodiments, Figures 18 to 20As shown, an elastic member 124 or a reset member for applying a force to the moving member 120 to move it away from the base portion 111 is provided between the base portion 111 and the moving member 120. Thus, during the coffee brewing process, when the brewing chamber assembly 500 moves towards the brewing head assembly 100 and compresses the coffee powder therebetween, the elastic member 124 or the reset member pushes the moving member 120 to apply a reaction force to the coffee powder, improving the compactness and uniformity of the compacted coffee powder cake and enhancing the taste of the brewed coffee.

[0082] Furthermore, the elastic member 124 can be a spring, and two springs are provided to apply a balanced force to the moving member 120, enabling it to move smoothly and apply a balanced force to the coffee powder, further enhancing the uniformity of the coffee powder cake.

[0083] In some embodiments, continuing to combine Figures 18 to 20 , the water outlet of the water inlet joint 130 extends outward to form a water outlet pipeline 134. The connecting pipe 140 extends into the water outlet pipeline 134. Two sealing rings 142 for sealing between the connecting pipe 140 and the water outlet pipeline 134 are sleeved on the connecting pipe 140, and the two sealing rings 142 are respectively located on both sides of the through hole 141. By providing the sealing rings 142, it is possible to prevent the water in the water inlet joint 130 from leaking between the connecting pipe 140 and the water outlet pipeline 134; moreover, when the connecting pipe 140 is in the position opposite to the pressure relief port 135 of the through hole 141, the two sealing rings 142 can be respectively located on both sides of the pressure relief port 135 and seal from both sides of the pressure relief port 135, realizing the sealed docking of the through hole 141 and the pressure relief port 135. When the coffee brewing is completed, the inner cavity of the machine body 600 and the brewing chamber of the brewing chamber assembly 500 can be depressurized through the pressure relief port 135, avoiding the phenomenon of coffee residue spraying when discharging the coffee residue cake 700 under pressure. In addition, the remaining water in the water path structure, the brewing chamber, and the inner cavity of the machine body 600 can also be discharged through the pressure relief port 135, keeping the water path, the inner cavity, and the brewing chamber dry, improving the hygienic safety, and also enhancing the taste of the next coffee brewing.

[0084] Furthermore, as Figure 19 and Figure 20 shown, the water inlet 131 of the water inlet joint 130 extends outward to form a water inlet pipeline 132, and the pressure relief port 135 of the water inlet joint 130 extends outward to form a pressure relief pipeline 136. The water inlet pipeline 132 is parallel to the pressure relief pipeline 136, and the water inlet pipeline 132 is perpendicular to the water outlet pipeline 134. The structure of the water inlet joint 130 is reasonable and convenient for installation on the seat body 110.

[0085] Continuing to combine Figures 18 to 20The movable part 120 is in the shape of a sleeve with one end open and the other end closed. The movable part 120 is sleeved outside the guide part 112 through its open end. A plurality of guide ribs 113 extending along the moving direction of the movable part 120 are provided on the outer peripheral surface of the guide part 112, and the movement of the movable part 120 is guided by the guide ribs 113. A water outlet 122 is provided at the closed end of the movable part 120, and one end of the connecting pipe 140 is connected to the water outlet 122. In this way, the water in the water inlet joint 130 is sent into the brewing chamber of the brewing chamber assembly 500 for coffee brewing. The movable part 120 of the above structure can move smoothly and stably, and has a closed end that is in full contact with the coffee powder, ensuring the smooth progress of coffee brewing.

[0086] Further, such as Figures 18 to 20 As shown, a filter screen 150 is provided outside the closed end of the movable part 120 for filtering the water supplied by the connecting pipe 140. The filter screen 150 can be fixed to the closed end of the movable part 120 by a filter screen bracket 151. The closed end of the movable part 120 extends outward along its moving direction to form a columnar protrusion 121. A sealing gasket 152 is provided outside the protrusion 121, and the sealing gasket 152 is pressed against the end surface of the closed end, and the outer peripheral surface of the sealing gasket 152 is substantially coplanar with the outer peripheral surface of the movable part 120, and the inner peripheral surface of the sealing gasket 152 hugs the protrusion 121. The water outlet 122 of the movable part 120 passes through the protrusion 121. The filter screen bracket 151 is embedded in the sealing gasket 152 and fixed to the protrusion 121. In this way, the water supplied from the water inlet joint 130 passes through the connecting pipe 140 and the water outlet 122 in sequence, and enters the brewing chamber after being filtered by the filter 150 to brew coffee, thereby avoiding leakage during the water supply process.

[0087] The brewing head assembly 100 of the embodiment of the present invention can relieve pressure in the inner cavity of the machine body 600 after the coffee machine finishes brewing coffee, thereby avoiding slag spraying and facilitating the subsequent slag pushing operation. The combination of pressure relief and slag pushing further improves the smoothness of the coffee machine's slag unloading.

[0088] like Figures 14 to 20As shown, a trigger switch 114 is provided on the base 110 of the brewing head assembly 100. Specifically, the trigger switch 114 can be fixed on the base 110 by a switch bracket 115. The trigger switch 114 can be a micro switch for easy triggering. A trigger portion 123 is provided on the side of the movable member 120 facing the bottom support portion 111. When the movable member 120 drives the connecting pipe 140 to move to the through hole 141 and the pressure relief port 135 are staggered, and the coffee powder is compacted to form a coffee powder cake of a certain density, the trigger portion 123 triggers the trigger switch 114. The trigger switch 114 is electrically connected to the controller of the coffee machine. When the trigger switch 114 is triggered, a trigger signal is sent to the controller. The controller receives the trigger signal and controls the driving device 400 to be closed, thereby stopping the screw assembly 300 from driving the brewing chamber assembly 500 to move. The controller also controls the water pump to start, and the water pump supplies water to the water inlet 131 of the water inlet joint 130. By setting the trigger switch 114, it is possible to automatically determine that the coffee machine has completed powder compacting, stop compacting the powder, and start supplying water for brewing, thereby improving the degree of automation.

[0089] The driving device 400 is started, the screw assembly 300 drives the brewing chamber assembly 500 to move linearly toward the brewing head assembly 100, the screw assembly 300 drives the pushing component 230 to push against the slag pushing assembly 220, and the rotating shaft 221 drives the pushing plate 222 to rotate, so that the pushing plate 222 rotates out of the inner cavity of the body 600 to avoid hindering the brewing chamber assembly 500 from moving toward the brewing head assembly 100. While rotating, the slag pushing assembly 220 moves toward the brewing head assembly 100, avoiding the sliding rod 241 of the limiting assembly 240, and the torsion spring 227 accumulates potential energy. When the slag pushing assembly 220 rotates to the top of the slide bar 241, and the pushing component 230 has passed over the slag pushing assembly 220, and the thrust acting on the slag pushing assembly 220 is cancelled, the rotating shaft 221 and the push plate 222 move in the direction away from the brewing head assembly 100 under the action of the first elastic member 226, and have a tendency to rotate under the action of the torsion spring 227. Due to the existence of the slide bar 241, the push plate 222 is stopped and limited, so that the push plate 222 remains in the state of waiting to push the slag outside the inner cavity. The brewing chamber of the brewing chamber assembly 500 is docked with the brewing head assembly 100, and the brewing chamber is directly opposite to the powder loading port on the machine body 600, and coffee powder can be loaded into the brewing chamber through the powder loading port, such as Figure 14 As shown, the coffee machine is now in the powder filling state.

[0090] When the brewing room is filled with powder, Figure 15 As shown, in the pre-compressed powder state, the through hole 141 of the connecting pipe 140 of the brewing head assembly 100 is opposite to the pressure relief port 135 of the water inlet connector 130 .

[0091] The brewing chamber assembly 500 is continuously driven to move toward the brewing head assembly 100. The moving part 120 drives the connecting pipe 140 to move toward the inside of the water inlet joint 130 under the action of the coffee powder. The through hole 141 is staggered with the pressure relief port 135. Figure 16 At the same time, due to the action of the elastic member 124 or the reset member, the movable member 120 exerts a reverse force on the coffee powder to compress the coffee powder. When the movable member 120 is pushed to the triggering portion 123 thereon to trigger the trigger switch 114, it indicates that the coffee powder is compacted to form a coffee powder cake with a certain density. The controller of the coffee machine controls the driving device 400 to close, and turns on the water pump to supply water to the water inlet connector 130 to brew the coffee powder cake.

[0092] After brewing is completed, the driving device 400 drives the brewing chamber assembly 500 to move in the reverse direction (moving in the direction away from the brewing head assembly 100) through the screw assembly 300. Figure 15 When the pre-compression powder position is shown, the through hole 141 of the connecting pipe 140 is aligned with the pressure relief port 135 of the water inlet joint 130, and the pressure relief port 135 can release the residual pressure and residual water in the brewing chamber and the pipeline at the same time. The screw assembly 300 drives the brewing chamber assembly 500 to continue to move in the reverse direction. When the slide groove 310 on the screw assembly 300 moves to the stopper 320 at one end thereof and abuts against the toggle block 242, the toggle block 242 drives the slide bar 241 to retreat and disengage from the push plate 222, releasing the limit on the push plate 222. The rotating shaft 221 drives the push plate 222 to rotate into the inner cavity of the body 600 (downward) under the action of the torsion spring 227, and pushes out the slag cake in the inner cavity to achieve slag unloading, as shown in FIG. Figure 17 shown.

[0093] It can be understood that the structures and working principles of the screw assembly 300, the brewing chamber assembly 500 and the driving device 400 of the coffee machine brewing system of the embodiment of the present invention are basically the same as those in the prior art, and will not be described in detail.

[0094] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A slag pushing mechanism is applied to a coffee machine brewing system. The coffee machine brewing system includes a machine body (600) and a lead screw assembly (300) disposed in the inner cavity of the machine body (600), and is characterized in that, The slag pushing mechanism includes: A base (210), fixed on the body (600) of the coffee machine brewing system; A slag pushing assembly (220), rotatably arranged on the base (210), and having a slag pushing state outside the inner cavity of the body (600) and a slag pushing state inside the inner cavity of the body (600); A pushing member (230), arranged on the lead screw assembly (300) of the coffee machine brewing system, and used to push the slag pushing assembly (220) to rotate when moving along the first direction with the lead screw assembly (300), so that the slag pushing assembly (220) is switched from the slag pushing state to the slag pushing standby state; A limiting assembly (240), arranged on the base (210), and capable of moving in the moving direction of the lead screw assembly (300). The limiting assembly is used to limit the slag pushing assembly (220) when the slag pushing assembly (220) is switched to the slag pushing standby state, so that the slag pushing assembly (220) is kept in the slag pushing standby state, and is used to release the limit on the slag pushing assembly (220) when the lead screw assembly (300) moves to the slag discharging position along the second direction opposite to the first direction, so that the slag pushing assembly (220) is switched to the slag pushing state.

2. The slag pushing mechanism according to claim 1, characterized in that, The slag pushing assembly (220) includes a rotating shaft (221) and a pushing plate (222) fixed on the rotating shaft (221) and extending along the radial direction of the rotating shaft (221). The rotating shaft (221) is rotatably arranged on the base (210), and the axial direction of the rotating shaft (221) is consistent with the moving direction of the lead screw assembly (300); an opening (620) communicating with the inner cavity is arranged on the body (600). When the rotating shaft (221) rotates, it drives the pushing plate (222) to enter and exit the inner cavity through the opening (620), so as to switch between the slag pushing state and the slag pushing standby state.

3. The slag pushing mechanism according to claim 2, wherein The pushing member (230) is a rod-shaped body extending along the first direction by the lead screw assembly (300). The free end of the rod-shaped body has a first inclined surface (231), and a second inclined surface (224) is arranged on the slag pushing assembly (220). When the pushing member (230) moves along the first direction with the lead screw assembly (300), the first inclined surface (231) of the pushing member (230) acts on the second inclined surface (224) of the slag pushing assembly (220), and pushes the slag pushing assembly (220) to rotate, so that it is switched from the slag pushing state to the slag pushing standby state.

4. The slag pushing mechanism according to claim 3, wherein A third inclined surface (225) is provided at one end of the rotating shaft (221) facing the second direction, a fourth inclined surface (213) cooperating with the third inclined surface (225) is provided in the base (210), and the first inclined surface (231) of the pushing component (230) acts on the second inclined surface (224) of the slag pushing assembly (220). When the slag pushing assembly (220) is pushed to rotate, the fourth inclined surface (213) acts on the third inclined surface (225) to push the rotating shaft (221) to move toward the first direction, and the push plate (222) is misaligned with the limit assembly (240). The limit assembly (240) avoids the push plate (222) so that the push plate (222) can rotate to the state to be pushed.

5. The slag pushing mechanism according to claim 4, wherein The base (210) has a rotating shaft cavity (211) therein, and one end of the rotating shaft cavity (211) is provided with an arc-shaped protrusion (212) adapted to the first end circumference of the rotating shaft (221), and the side of the arc-shaped protrusion (212) facing the second direction forms the fourth inclined surface (213); the first end of the rotating shaft (221) is partially cut in the circumferential direction to form a notch, and the end of the notch on one side along the axial direction forms the third inclined surface (225), the arc-shaped protrusion (212) is embedded in the notch, and the fourth inclined surface (213) cooperates with the third inclined surface (225); The slag pushing assembly (220) further comprises a first elastic member (226), the first elastic member (226) acting on the rotating shaft (221) and being used to apply a force to the rotating shaft (221) to move the rotating shaft (221) toward the second direction, so that when the pushing component (230) releases the pushing of the slag pushing assembly (220), the rotating shaft (221) moves along the second direction to a position opposite to the limiting assembly (240), and is limited by the limiting assembly (240) to be maintained in the state to be pushed.

6. The slag pushing mechanism according to claim 4, wherein, The limiting assembly (240) comprises a slide bar (241), a toggle block (242) and a second elastic member (243); the slide bar (241) is arranged on the base (210) and is capable of sliding along the base (210) in the moving direction of the screw assembly (300); the toggle block (242) is arranged at one end of the slide bar (241) and is located outside the base (210); the other end of the slide bar (241) forms a limiting portion (245). The toggle block (242) can drive the slide bar (241) to move along the second direction under the action of an external force, so that the limiting portion (245) of the slide bar (241) is separated from the push plate (222) to release the limiting of the slag pushing assembly (220), and the second elastic member (243) is used to apply a force to the slide bar (241) to move it toward the first direction, so as to limit the push plate (222) in the state to be pushed slag.

7. The slag pushing mechanism according to claim 6, characterized in that, The screw rod assembly (300) is provided with a slide groove (310) extending along its moving direction, and the slide groove (310) is blocked at one end in the first direction to form a stopper (320); the toggle block (242) passes through the housing of the body (600) and extends into the slide groove (310), and when the screw rod assembly (300) moves along the second direction until the stopper (320) of the slide groove (310) abuts against the toggle block (242), the toggle block (242) and the slide rod (241) are driven to move together along the second direction, so that the slide rod (241) is separated from the push plate (222).

8. The slag pushing mechanism according to claim 4, wherein, The rotating shaft (221) is provided with a torsion spring (227), and the torsion spring (227) is used to exert a force on the slag pushing assembly (220) to switch the slag pushing state from the slag pushing state.

9. A coffee machine brewing system, comprising a machine body (600), a lead screw assembly (300), a brewing chamber assembly (500) and a brewing head assembly (100). The machine body (600) has an inner cavity. The brewing head assembly (100) is arranged at one end of the inner cavity. The lead screw assembly (300) and the brewing chamber assembly (500) are arranged at the other end in the inner cavity and can move linearly in the inner cavity, characterized in that, The coffee machine brewing system further comprises a slag pushing mechanism according to any one of claims 1 to 8, wherein the slag pushing mechanism is arranged on the machine body (600) and is capable of entering and exiting the inner cavity of the machine body (600) through an opening (620) on the machine body (600), so as to push the slag cake (700) to fall when the coffee machine brewing system is in a slag unloading state.

10. The coffee machine brewing system according to claim 9, characterized in that, The inner cavity of the body (600) gradually tilts upward along the first direction.

Images