Brewing cup assembly of coffee machine and brewing unit of coffee machine

Abstract

The utility model belongs to the technical field of coffee machines, and particularly relates to a brewing cup assembly of a coffee machine and a brewing unit of the coffee machine. The brewing device comprises a brewing cup, a piston and a piston rod, the piston and the piston rod reciprocate in the brewing cup, and a piston buckle is arranged at the tail of the piston rod. The top surface of the brewing cup is provided with a residue scraping plate, the residue scraping plate is rotatably connected with the brewing cup, the brewing cup is also provided with a lock catch mechanism, the lock catch mechanism comprises a key and a key spring, and the key is provided with a buckling end. The device further comprises a driving mechanism, a second driving mechanism, a frame, a buckling mechanism and a seat body. According to the brewing cup assembly, the piston buckle, the lock catch mechanism and the residue scraping plate are integrated on the brewing cup assembly, the brewing cup assembly and a corresponding driving mechanism can jointly complete the functions of brewing and residue scraping through a simple structure, meanwhile, the universality of the brewing cup assembly is very high, and the brewing cup assembly can work in various different coffee machines. The simplification of the brewing cup assembly enables the coffee machine to be simplified and miniaturized, and meanwhile the detachable design brought by the lock catch mechanism enables the brewing cup assembly to be more convenient to clean and easier to replace after being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of coffee machines, and particularly relates to a brewing cup assembly and a coffee machine brewing unit of a coffee machine. Background Art

[0002] Existing fully automatic coffee machines achieve automatic coffee making. The process includes grinding beans, receiving powder, pressing powder, brewing, scraping residue, cleaning, etc. The key component for realizing these processes is the brewing unit. The brewing unit of a coffee machine is the core component for brewing coffee. It generally includes a brewing plug assembly, a power mechanism, and a brewing cup assembly. The power mechanism drives the brewing cup assembly and the brewing plug assembly to generate position changes to complete coffee brewing and residue scraping. The patent application with the patent number CN 102028408 B discloses a technical solution of a brewing unit of a coffee machine. The brewing plug assembly includes a brewing plug and a brewing plug bracket. The brewing plug bracket is fastened on the main body seat, and the brewing plug is arranged in the brewing plug bracket so as to be movable up and down along the axis direction of the brewing plug.

[0003] A brewing cup assembly is arranged in the brewing unit. There is no residue scraping plate on the brewing cup assembly. The brewing cup assembly is rotatably arranged below the brewing plug bracket. The brewing plug can move up and down along the axis direction of the brewing plug to achieve coffee brewing. When brewing is completed, the brewing cup assembly rotates, and the coffee residue cake in the brewing cup assembly is scraped off by the brewing plug bracket. The residue scraping function is jointly completed by the brewing cup assembly and the brewing plug bracket. The user can manually take out the brewing cup assembly for cleaning. The defect of this brewing unit is that the user can take out the brewing cup assembly for cleaning but cannot take out the brewing plug bracket for cleaning. The method for cleaning the coffee plug bracket is that the user inserts a rag or a cotton swab into the machine to wipe the surface of the brewing plug bracket, which brings great inconvenience to the user's daily cleaning and use.

[0004] The invention patent with the patent number CN 101877981 B discloses a technical solution of a brewing unit of a coffee machine. The brewing plug assembly includes a brewing plug, and the brewing plug is fastened on the main body seat. A brewing cup assembly and a residue scraping plate are arranged in the brewing unit. The brewing cup assembly moves in a combined manner of curves and straight lines to achieve coffee brewing. Residue scraping is completed by driving the residue scraping plate to rotate through a one-way ratchet wheel rotatably arranged on the main body seat. The defect of this brewing unit is the removable brewing cup assembly. The user can see 2 arc gears, 1 rack, and 2 swing push rod arms. There are too many parts, the volume is too large, and the structure is too complex, which brings great inconvenience to the user's daily cleaning and use. Summary of the Utility Model

[0005] The first object of the utility model is to provide a coffee machine brewing cup assembly with a simple structure, easy to clean, and small volume.

[0006] The above object is achieved as follows.

[0007] A coffee machine brewing cup assembly, comprising a brewing cup, a piston and a piston rod, the piston and the piston rod reciprocating within the brewing cup, and a piston buckle provided at the tail of the piston rod.

[0008] A slag scraping plate is provided on the top surface of the brewing cup, the slag scraping plate being rotatably connected to the brewing cup, and the brewing cup further being provided with a locking mechanism, the locking mechanism including a button and a button spring, the button being provided with a buckle end.

[0009] Preferably, the piston buckle is provided with a buckling portion.

[0010] Preferably, the buckling portion is a cylinder at least part of the cross-sectional dimension of which is larger than the cross-sectional dimension of the piston rod, and an annular groove is provided in the middle of the cylinder.

[0011] Preferably, the buckling portion is a rib at the bottom end of the piston rod.

[0012] Preferably, the buckling portion is a convex block at least part of the cross-sectional dimension of which is larger than the cross-sectional dimension of the piston rod, and a hole is perpendicularly provided through the convex block along the central axis of the brewing cup.

[0013] Preferably, the slag scraping plate is provided with a return spring, the slag scraping plate including a rotating shaft, a scraping blade and a driven part, the return spring being provided on the rotating shaft, and the cross-section of the scraping blade in a direction perpendicular to the rotating shaft being arc-shaped.

[0014] Preferably, the driven part has an arc-shaped convex surface, the arc-shaped convex surface extending away from the scraping blade end in the radial direction of the rotating shaft.

[0015] Preferably, the driven part has a spiral surface, the axis of the spiral surface coinciding with the rotating shaft, and the projection of the spiral surface along the direction of the rotating shaft being offset from the projection of the coffee machine brewing cup assembly.

[0016] Preferably, the driven part has arc teeth surrounding the rotating shaft of the slag scraping plate.

[0017] The second object of the present utility model is to provide a coffee machine brewing unit including the above coffee machine brewing cup assembly.

[0018] The above object is achieved as follows.

[0019] A coffee machine brewing unit, including the above-mentioned coffee machine brewing assembly, further including a driving mechanism, a second driving mechanism, a frame, a buckling mechanism and a seat body.

[0020] The driving mechanism includes a loading rack and a screw rod. The screw rod is arranged on the frame, the loading rack is arranged on the screw rod, the brewing cup assembly is arranged on the loading rack, and the brewing cup assembly is detachably connected to the loading rack through a locking mechanism, so as to facilitate the disassembly and installation between the brewing cup assembly and the loading rack. The loading rack moves back and forth under the drive of the driving mechanism, realizing the conversion of the brewing cup assembly between positions such as the powder loading position, the brewing position, the slag scraping position, and the piston retraction position.

[0021] A touch block is provided on the second driving mechanism, and the touch block and the driven part of the slag scraping plate are correspondingly arranged in the movement stroke. Under the action of the second driving mechanism, relative movement can occur between the touch block and the driven part, causing the driven part to be stressed and move or rotate.

[0022] The buckling mechanism is buckled with the buckling part of the piston to achieve linkage.

[0023] After adopting the above technical solutions, the utility model integrates a piston buckle, a locking mechanism and a slag scraping plate on the brewing cup assembly. Through a simple structure, the brewing cup assembly and the corresponding driving mechanism can jointly complete the functions of brewing and slag scraping. At the same time, the universality of the brewing cup assembly is very strong and it can also work in a variety of different coffee machines. The simplification of the brewing cup assembly can simplify and miniaturize the coffee machine. At the same time, the detachable design brought by the locking mechanism makes the brewing cup assembly more convenient to clean and easier to replace when it is damaged. Description of the Drawings

[0024] Figure 1 Schematic diagram of the brewing cup assembly and the brewing unit.

[0025] Figure 2 Overall cross-sectional view of the brewing cup assembly.

[0026] Figure 3 Overall cross-sectional view of the brewing cup assembly when it is about to enter the powder receiving position.

[0027] Figure 4 Overall cross-sectional view of the brewing cup assembly when it is in the powder receiving position.

[0028] Figure 5 Overall cross-sectional view of the brewing cup assembly when it is in the brewing position.

[0029] Figure 6 Overall cross-sectional view of the brewing cup assembly when it is in the piston retracted position.

[0030] Figure 7 Overall cross-sectional view of the brewing cup assembly when it is in the slag scraping position.

[0031] Figure 8 Overall cross-sectional view of the brewing cup assembly when scraping slag.

[0032] Figure 9Top view of the brewing cup assembly when scraping residue starts.

[0033] Figure 10 Top view of the brewing cup assembly when scraping residue is completed.

[0034] Figure 11 Overall sectional view of the brewing cup assembly when scraping residue is completed.

[0035] Figure 12 Overall sectional view of the brewing cup assembly when reset to the initial position.

[0036] Figure 13 Structural schematic diagram of the brewing cup assembly.

[0037] Figure 14 Structural schematic diagram of the brewing cup assembly and the touch block component.

[0038] Figure 15 Structural schematic diagram of the brewing cup assembly of Embodiment 2.

[0039] Figure 16 Sectional view of the brewing cup assembly of Embodiment 3.

[0040] Figure 17 Structural schematic diagram of the piston of Embodiment 3. Detailed implementation manners

[0041] The present utility model will be further described below in conjunction with the accompanying drawings and detailed implementation manners.

[0042] Embodiment 1, in combination with Figures 1 to 14 , a coffee machine brewing unit, which includes a brewing cup assembly 4, a driving mechanism, a second driving mechanism 31, a frame 100, a fastening mechanism 13 and a base 1.

[0043] The brewing cup assembly 4 includes a brewing cup 41, a piston 5 and a piston rod 51. The piston 5 and the piston rod 51 reciprocate in the brewing cup 41. A piston buckle 6 is provided at the tail of the piston rod 51. The piston buckle 6 is provided with a fastening portion. The fastening portion is a cylinder with at least a part of its cross-sectional dimension larger than that of the piston rod 51. An annular groove is provided in the middle of the cylinder. The fastening mechanism 13 is fastened to the fastening portion to achieve linkage.

[0044] A residue scraping plate 9 is provided on the top surface of the brewing cup 41. The residue scraping plate 9 is provided with a return spring. The residue scraping plate 9 is rotatably connected to the brewing cup 41. The residue scraping plate 9 includes a rotating shaft 91, a scraping blade 92 and a driven portion 90. The return spring is sleeved on the rotating shaft 91. The cross-section of the scraping blade 92 in the direction perpendicular to the rotating shaft 91 is arc-shaped. The driven portion 90 has an arc-shaped convex surface, and the arc-shaped convex surface extends in the radial direction of the rotating shaft 91 away from the end of the scraping blade 92.

[0045] The brewing cup 41 is further provided with a locking mechanism 8, and the locking mechanism 8 includes a button 81 and a button spring 82. A buckle end 83 is provided on the button 81.

[0046] The driving mechanism includes a loading rack 2 and a screw 30. The screw 30 is arranged on the frame 100, and the loading rack 2 is arranged on the screw 30. The loading rack 2 includes an outer peripheral wall 21 and an inner peripheral wall 22. The seat body 1 is arranged between the outer peripheral wall 21 and the inner peripheral wall 22. A pin structure 7 is further provided on the seat body 1. The side wall 3 of the fastening mechanism 13 is located between the inner peripheral wall 22 and the seat body 1. The pin structure 7 is used to lock the fastening mechanism 13. The brewing cup assembly 4 is arranged in the cavity formed by the inner peripheral wall 22 of the loading rack 2. The brewing cup assembly 4 and the loading rack 2 are detachably connected through the locking mechanism 8 to facilitate the disassembly and installation between the brewing cup assembly 4 and the loading rack 2. The loading rack 2 moves back and forth under the drive of the driving mechanism to realize the conversion of the brewing cup assembly 4 between positions such as the powder loading position, the brewing position, the slag scraping position, and the piston retraction position.

[0047] A touch block 11 is provided on the second driving mechanism 31. The touch block 11 and the driven part 90 of the slag scraping plate 9 are correspondingly arranged in the movement stroke. Under the action of the second driving mechanism 31, relative movement can occur between the touch block 11 and the driven part 90, so that the driven part 90 is forced to move or rotate.

[0048] The operation process of the coffee machine brewing unit is as follows.

[0049] When the driving mechanism drives the loading rack 2 and drives the brewing cup assembly 4 to move upward relative to the seat body 1 to a specific position, the outer peripheral wall 21 releases the pin structure 7 to unlock the fastening mechanism 13. When the driving mechanism drives the loading rack 2 and drives the brewing cup assembly 4 to rise to the top of the stroke, it enters the powder loading position, and the coffee powder falls into the brewing cup 41.

[0050] Since the fastening mechanism 13 fastens the piston buckle 6, the fastening mechanism 13 is linked with the piston 5. The fastening mechanism 13 drives the piston 5 to rise, pushing the piston 5 to compress the space in the cavity of the brewing cup 41, and then coffee brewing is carried out.

[0051] When the fastening mechanism 13 moves downward relative to the seat body 1, due to the friction force, it drives the brewing cup assembly 4 and the loading rack 2 to move downward together. After the fastening mechanism 13 moves to the lowest position, the loading rack 2 continues to move downward. The loading rack 2 moves downward relative to the piston 5, which is equivalent to the piston 5 moving upward relative to the brewing cup 41, and then the waste coffee cake is exposed. When the driving mechanism drives the loading rack 2 to move downward to a specific position, the outer peripheral wall 21 presses the pin structure 7 to lock the fastening mechanism 13, and the fastening mechanism 13 is locked by the seat body 1 and does not move.

[0052] At this time, the second driving mechanism 31 drives the touch block 11 to move. During the movement, relative movement occurs between the touch block 11 and the driven part 90 of the scraper plate 9, causing the driven part 90 to be squeezed and rotated, driving the scraper 92 to push out the waste coffee cake, and then the reset spring resets the scraper plate 9.

[0053] Embodiment 2, combined Figure 15 The difference between Example 2 and Example 1 lies in the snap-fitting portion of the piston buckle 6 and the snap-fitting mechanism 13. The snap-fitting portion of Example 2 is a circle of convex ribs at the bottom. The base body 1 is also provided with a snap-fitting mechanism 13. The snap-fitting mechanism 13 is arranged at a position corresponding to the brewing cup assembly 4 that can cooperate with the piston buckle 6 in the top residue section. When the brewing cup assembly 4 is driven to the top residue section or close to the top residue section, the snap-fitting mechanism 13 snaps the piston buckle 6. When the brewing cup assembly 4 leaves the piston retraction section, the snap-fitting mechanism unlocks the piston buckle 6.

[0054] Embodiment 3, combined Figures 16 to 17 The difference between Example 3 and Example 1 lies in the snap-fitting portion of the piston buckle 6 and the snap-fitting mechanism 13. The snap-fitting portion of Example 3 is a convex block whose cross-sectional dimension is larger than the cross-sectional dimension of the piston rod 51. A hole is formed on the convex block perpendicular to the central axis of the brewing cup assembly 4. The hole is formed at the center of the convex block. The snap-fitting mechanism 13 changes accordingly to clamp the snap-fitting portion of the piston buckle 6.

[0055] Embodiment 4, no figure, the difference between Embodiment 4 and Embodiment 1 lies in the touch block 11 and the driven part 90 of the scraper plate 9, the driven part 90 of the scraper plate 9 has a spiral surface, the axis of the spiral surface coincides with the rotating shaft 91, the projection of the spiral surface along the rotating shaft 91 is staggered with the projection of the brewing cup assembly 4, the touch block 11 is a top block fixed on the frame 100, vertically pressing the driven part 90 to trigger the action of the scraper plate 9.

[0056] Embodiment 5, no figure, the difference between Embodiment 5 and Embodiment 1 lies in the touch block 11 and the driven part 90 of the scraper plate 9, the driven part 90 of the scraper plate 9 has arc teeth surrounding the rotating shaft 91 of the scraper plate 9, the touch block 11 is a rack driven by the second driving mechanism 31 at one end, the touch block 11 is engaged with the driven part 90 to drive the driven part 90 to rotate and trigger the action of the scraper plate 9.

Claims

1. A coffee machine brewing cup assembly, comprising a brewing cup, a piston and a piston rod, the piston and the piston rod reciprocating within the brewing cup, characterized in that: The rear part of the piston rod is provided with a piston buckle; the top surface of the brewing cup is provided with a scraping plate, the scraping plate is rotatably connected to the brewing cup, and the brewing cup is also provided with a locking mechanism, which includes a button and a button spring, and a buckle end is provided on the button.

2. The coffee machine brewing cup assembly according to claim 1, wherein: The piston buckle is provided with a buckling portion.

3. The coffee machine brewing cup assembly according to claim 2, characterized in that: The buckling portion is a cylinder whose cross-sectional dimension is at least partially larger than that of the piston rod, and an annular groove is arranged in the middle of the cylinder.

4. The coffee machine brewing cup assembly according to claim 2, wherein: The buckling part is a convex rib at the bottom end of the piston rod.

5. The coffee machine brewing cup assembly according to claim 2, wherein: The buckling part is a convex block whose cross-sectional dimension is at least partially larger than the cross-sectional dimension of the piston rod, and a hole is formed on the convex block perpendicular to the central axis of the brewing cup.

6. The coffee machine brewing cup assembly according to claim 1, wherein: The scraper plate is provided with a reset spring, and comprises a rotating shaft, a scraper blade and a driven part. The reset spring is arranged on the rotating shaft, and the cross section of the scraper blade in the direction perpendicular to the rotating shaft is arc-shaped.

7. The coffee machine brewing cup assembly according to claim 6, wherein: The driven portion has an arc-shaped convex surface, and the arc-shaped convex surface extends away from the end of the scraper blade in the radial direction of the rotating shaft.

8. The coffee machine brewing cup assembly according to claim 7, characterized in that: The driven part has a spiral surface, the axis of the spiral surface coincides with the rotation axis, and the projection of the spiral surface along the rotation axis is staggered with the projection of the brewing cup assembly.

9. The coffee machine brewing cup assembly according to claim 8, characterized in that: The driven part is provided with arc teeth surrounding the rotating shaft of the scraper plate.

10. A coffee machine brewing unit, comprising the coffee machine brewing assembly according to any one of claims 1 to 9, characterized in that: It also includes a driving mechanism, a second driving mechanism, a frame, a buckling mechanism and a seat; The driving mechanism comprises a loading frame and a screw, the screw is arranged on the frame, the loading frame is arranged on the screw, the brewing cup assembly is arranged on the loading frame, the brewing cup assembly and the loading frame are detachably connected through a locking mechanism to facilitate the disassembly and installation between the brewing cup assembly and the loading frame, and the loading frame performs reciprocating motion under the drive of the driving mechanism to realize the conversion of the brewing cup assembly between the powder loading position, the brewing position, the residue scraping position and the piston retraction position; The second driving mechanism is provided with a touch block, and the touch block and the driven part of the scraper plate are arranged correspondingly in the movement stroke. Under the action of the second driving mechanism, relative movement can occur between the touch block and the driven part, so that the driven part is forced to move or rotate; The buckling mechanism and the buckling part are buckled to achieve linkage.

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