Coffee machine

Abstract

The utility model relates to a coffee machine which comprises a frame, a brewing device assembly and a brewing plug assembly, the brewing device assembly is rotatably arranged on the frame, the brewing plug assembly is obliquely arranged in the frame relative to the vertical direction, in the state of brewing coffee, the brewing device assembly rotates to be right opposite to the brewing plug assembly, and the brewing plug assembly is arranged in the frame relative to the vertical direction. The frame is further provided with a positioning piece, the positioning piece is provided with a positioning groove allowing the exposed end of a cup cylinder of the brewing device assembly to be screwed in, the cup cylinder is screwed in the positioning groove, so that the brewing device assembly is positioned at the position right opposite to the brewing plug assembly, and meanwhile the brewing plug assembly is screwed in the positioning groove. And the positioning piece is limited on the cup cylinder along the moving direction of the brewing plug. Compared with the prior art, the structure is simple, the brewing device assembly is accurately and conveniently positioned, and part of acting force applied to the brewing device assembly by the brewing plug assembly can be borne in the extraction process, so that the structural deformation of the brewing device assembly can be slowed down to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of household appliances, especially to a coffee machine. BACKGROUND

[0002] The brewer assembly is an important component of the coffee machine, and is used for brewing coffee. Generally, the piston of the brewer assembly is pressed by the brewer plug, and the coffee powder is pressed by the two to extract the coffee. Further, the brewer assembly is provided with a grinding assembly for grinding coffee beans, and the brewer plug assembly is provided on one side of the grinding assembly. The grinding assembly extends vertically, and the brewer plug assembly is inclined relative to the vertical direction. In addition, the brewer assembly is rotatably arranged. In the powder receiving state, the brewer assembly is vertically arranged and vertically opposite to the grinding assembly. In the extraction state (powder pressing state), the brewer assembly is rotated to be vertically opposite to the brewer plug assembly to press the powder.

[0003] In the powder pressing state, the position of the brewer assembly is very important. If the position is not accurate, the coffee powder pressing effect will be affected, and the structure of the brewer assembly will be deformed when the powder is pressed. Therefore, the Chinese patent application No. CN200910174566.5 (publication No. CN102028408 A) discloses a brewing unit of a coffee machine, and specifically discloses the following content: the brewing unit comprises a brewer plug component 1, a brewer seat 2 and a fastening assembly 3. The fastening assembly 3 comprises a recess 31 arranged at the lower end of the brewer plug support 13 and a boss 32 arranged at the upper end of the brewer 21. In the connection state of the brewer 21 and the brewer plug support 13, the boss 32 is embedded in the recess 31 and is fastened with the recess 31. During the brewing process of the coffee, the boss 32 can be in the fastening state with the recess 31. Further, the recess 31 is arranged on the brewer plug support 13 along the direction of rotation of the brewer 21. The boss 32 can be embedded in the recess 31 with the rotation of the brewer 21. During the brewing process of the coffee, the boss 32 and the recess 31 are in the fastening state due to the interaction force between the brewer 21 and the brewer plug component 1.

[0004] It can be seen that the above-mentioned patent realizes the positioning of the brewer by the recess on the brewer plug support and the boss on the brewer. However, this positioning method mainly has the following problems: (1) the recess on the brewer plug support and the boss on the brewer need to be fastened to realize the positioning of the brewer, which is complex and inconvenient to position, and the recess and the boss are separate structures, so the positioning accuracy is not high; (2) the recess and the boss are difficult to process, which increases the manufacturing cost of the coffee machine, and the recess and the boss are not easy to clean. SUMMARY

[0005] The first technical problem to be solved by the utility model is to provide a coffee machine with simple structure, convenient processing, convenient and accurate positioning of the brewer assembly.

[0006] The second technical problem to be solved by the utility model is to provide a coffee machine with simple structure and small structural deformation of the brewing device assembly during brewing.

[0007] The third technical problem to be solved by the utility model is to provide a coffee machine with simple structure and convenient cleaning.

[0008] The utility model provides a coffee machine, including frame, brewing device assembly and brewing plug assembly, wherein, the brewing device assembly includes the casing, is provided with the cup cylinder in this casing, and is provided with the piston in this cup cylinder, the brewing plug assembly includes the support and the brewing plug that can move back and forth in the support along the own axial direction is arranged, and brewing device assembly is rotatably arranged on above-mentioned frame and brewing plug assembly is obliquely arranged in above-mentioned frame relative to vertical direction, in the state of brewing coffee, above-mentioned brewing device assembly rotates to with above-mentioned brewing plug assembly directly opposite, its characterized in that, still be provided with the positioning piece on the frame, the positioning piece is equipped with the positioning recess that the exposed end of above-mentioned cup cylinder is spun into, and above-mentioned cup cylinder spins into above-mentioned positioning recess and makes brewing device assembly be positioned at above-mentioned brewing plug assembly directly opposite place, simultaneously, above-mentioned positioning piece is located on above-mentioned cup cylinder along the movement direction of above-mentioned brewing plug.

[0009] Further, the positioning piece is a block body arranged in parallel below the brewing plug assembly, one side of the block body is recessed from outside to inside to form the positioning recess. Thus, the structure of the positioning piece is simple, convenient to clean, and can better ensure that the brewing device assembly is parallel to the brewing plug assembly when the positioning piece positions the brewing device assembly.

[0010] Further, the groove wall shape of the closed end of the positioning recess cooperates with the outer surface of the exposed end of the cup cylinder to hold the cup cylinder. This can better position the cup cylinder to position the brewing device assembly, and the groove walls on both sides of the open end extend along the tangent direction of the groove wall of the closed end, thereby guiding the exposed end of the cup cylinder into the positioning recess.

[0011] Further, the exposed end surface of the cup cylinder is convexly provided with a protrusion extending along the length direction of the side on which it is located, and the bottom surface of each protrusion is slidingly fitted with the top surface of the corresponding side of the open end of the positioning piece along the length direction to guide the exposed end of the cup cylinder into or out of the positioning recess. The sliding fit between the bottom surface of each protrusion and the top surface of the corresponding side of the open end of the positioning piece can guide the exposed end of the cup cylinder into or out of the positioning recess. At the same time, each protrusion can withstand part of the force applied by the brewing plug assembly to the brewing device assembly during extraction, thereby facilitating the avoidance of structural deformation of the brewing device assembly.

[0012] Further, the bottom surface of each of the protrusions and the top surface of the corresponding side of the opening section of the positioning member are respectively arc-shaped surfaces extending along the length direction of the protrusions. In this way, the exposed end of the cup can be rotated into the positioning groove in a self-centering manner, so that the exposed end of the cup can be better guided into the positioning groove. In addition, the cup rotated into the positioning groove needs a certain force to be rotated out of the positioning groove, so that the exposed end of the cup in the positioning groove can be limited in a certain way, but the cup can be smoothly slid out of the positioning groove at the end of extraction.

[0013] Further, the outer side of each of the protrusions is respectively provided with a guide block, and the bottom surface of each of the guide blocks is an arc-shaped surface and is slidably matched with the top surface of the corresponding side of the opening section of the positioning member along the length direction. The guide blocks can better guide the cup, and the guide blocks can bear part of the force applied by the brewing plug assembly to the brewing assembly during extraction, so that the structural deformation of the brewing assembly can be further avoided.

[0014] Further, the shape of each of the guide blocks is a cylinder parallel to the rotation center axis of the brewing assembly. In this way, the brewing assembly in a rotating state can be better rotated into the positioning groove in a self-centering manner under the action of the guide blocks, so that the positioning action of the positioning member on the brewing assembly is more smooth.

[0015] Further, the guide blocks on each of the protrusions are at least two and are respectively arranged at the two ends of the protrusion along the length direction. On the one hand, the exposed end of the cup can be more stably rotated into or out of the positioning groove, and on the other hand, the multiple guide blocks can better bear the force applied by the brewing plug assembly during extraction.

[0016] Further, the outer surface of the exposed end of the cup is provided with a radially extending protruding ring in the circumferential direction, two sides of the protruding ring are respectively the protrusions, and the bottom surface of the protruding ring is arc-shaped along the other two sides, and the top surface of the positioning member is arc-shaped from the opening end to the closed end and matches the bottom surface of the protruding ring. Not only is it convenient to arrange the protrusions on the exposed end of the cup, but also the structure of the protrusions is more stable, and the closed protruding ring can better bear the force applied by the brewing plug assembly, so that the structural deformation of the brewing assembly can be better avoided.

[0017] Further, the top surface of the protruding ring is a flat surface and is flush with the rim of the cup mouth of the cup. In this way, the residue of dirt on the cup mouth can be reduced, especially during the slagging process, which facilitates the cleaning of the cup.

[0018] Furthermore, the positioning member and the housing are positioned along the movement direction of the brewing stopper. This prevents the positioning member from transmitting the force applied by the brewing stopper assembly to the housing during the extraction process, thus helping to avoid structural deformation of the brewer assembly.

[0019] Furthermore, both the brewing surface of the brewing plug and the brewing surface of the piston are flat. This allows for more even force distribution during tamping, resulting in more uniform coffee grounds and improved extraction.

[0020] Compared with existing technologies, the advantages of this invention are as follows: The positioning element allows the brewer assembly to be positioned directly opposite the brewing stopper assembly, ensuring precise positioning at the extraction point and guaranteeing smooth coffee extraction. This reduces structural deformation of the brewer assembly caused by inaccurate positioning during extraction. Furthermore, compared to existing technologies, this invention has a simpler structure; the brewer assembly is positioned by screwing the exposed end of the cup into the positioning groove of the positioning element, making positioning convenient. In addition, the positioning element is confined to the cup along the direction of the brewing stopper's movement, thus bearing some of the force exerted on the brewer assembly by the brewing stopper assembly during extraction, thereby reducing structural deformation of the brewer assembly to some extent. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the coffee machine in its initial state (in the powder receiving state) in an embodiment of this utility model;

[0022] Figure 2 for Figure 1 A structural diagram from another direction;

[0023] Figure 3 for Figure 1 A structural diagram in another direction;

[0024] Figure 4 This is a schematic diagram of the coffee machine in the positioning state of the brewer assembly in an embodiment of this utility model (in the tamping state);

[0025] Figure 5 This is a partial structural diagram of the coffee machine in the positioning state in an embodiment of the present invention;

[0026] Figure 6 for Figure 5 A structural diagram from another direction;

[0027] Figure 7 This is an exploded view of a portion of the coffee machine in an embodiment of this utility model;

[0028] Figure 8 for Figure 7 A structural diagram in another direction. DETAILED DESCRIPTION

[0029] The utility model will be described in further detail below in conjunction with the drawings.

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the utility model can be arranged in different directions, so these orientation indicating terms are only as an illustration and should not be regarded as a limitation, for example, "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity. In addition, the features defined as "first", "second" can explicitly or implicitly include one or more features.

[0031] As shown in Figures 1 to 8 A coffee machine includes a frame 1, a brewer assembly 2 and a brew plug assembly 3. The brewer assembly 2 includes a housing 21, a cup 22 is arranged in the housing 21, and a piston 23 is arranged in the cup 22, as shown in Figure 2 The brew plug assembly 3 includes a bracket 31 and a brew plug 32 movably arranged on the bracket 31 along the axial direction, as shown in Figure 3 The brewer assembly 2 is rotatably arranged on the frame 1, and the brew plug assembly 3 is arranged in the frame 1 at an angle to the vertical direction. In the powder receiving state, the brewer assembly 2 is arranged vertically, so that coffee can fall into the cup 22 from a grinding assembly (not shown) above the brewer assembly 2, as shown in Figure 1 In the coffee brewing state, the brewer assembly 2 is rotated to face the brew plug assembly 3, as shown in Figure 4

[0032] ​Further, the frame 1 is further provided with a positioning member 4, which is provided with a positioning groove 41 for the exposed end of the cup 22 to be screwed into, and the cup 22 is screwed into the positioning groove 41 so that the brewer assembly 2 is positioned opposite the brewer plug assembly 3, and the positioning member 4 is limited on the cup 22 along the moving direction of the brewer plug 32. It can be seen that, in the utility model, the positioning member 4 can position the brewer assembly 2 opposite the brewer plug assembly 3, i.e. accurately position the brewer assembly 2 at the extraction position, ensure the smooth extraction of coffee, reduce the structural deformation of the brewer assembly 2 due to inaccurate positioning of the extraction position during extraction, and compared with the prior art, the structure is simple and positioning is convenient. In addition, the positioning member 4 is limited on the cup 22 along the moving direction of the brewer plug 32, so that it can bear part of the force applied by the brewer plug assembly 3 to the brewer assembly 2 during extraction, thus also slowing down the structural deformation of the brewer assembly 2 to a certain extent.

[0033] Specifically, as shown in Figure 1 The positioning member 4 is a block body arranged parallel to the brewer plug assembly 3, and the block body is recessed from the outside to the inside on one side to form the positioning groove 41. Thus, the structure of the positioning member 4 is simple, convenient to clean, and can better ensure that the brewer assembly 2 is parallel to the brewer plug assembly 3 when the positioning member 4 positions the brewer assembly 2. Preferably, the groove wall of the closed end of the positioning groove 41 cooperates with the outer surface of the exposed end of the cup 22 to hold the cup 22, which not only better positions the cup 22 to position the brewer assembly 2, but also positions the positioning member 4 on the cup 22, and the groove walls on both sides of the open end extend along the tangent direction of the groove wall of the closed end, so that the exposed end of the cup 22 can be guided into the positioning groove 41.

[0034] Further, the two sides of the exposed end surface of the cup 22 are respectively provided with a protrusion 51 extending along the length direction of the side. The bottom surface of each protrusion 51 is respectively slidably fitted with the top surface of the corresponding side of the opening end of the positioning member 4 along the length direction, so as to guide the exposed end of the cup 22 into or out of the positioning groove 41. The sliding fit between the bottom surface of each protrusion 51 and the top surface of the corresponding side of the opening end of the positioning member 4 can guide the exposed end of the cup 22 into or out of the positioning groove 41. Meanwhile, each protrusion 51 can bear part of the force applied by the brewing plug assembly 3 to the brewing assembly 2 during extraction, thereby facilitating the avoidance of structural deformation of the brewing assembly 2. Preferably, the bottom surface of each protrusion 51 and the top surface of the corresponding side of the opening end of the positioning member 4 are respectively arc-shaped surfaces extending along the length direction of the surfaces. In this way, the cooperation of the two surfaces can enable the exposed end of the cup 22 to be rotated into the positioning groove 41 in a self-centering manner of the brewing assembly 2, thereby better guiding the exposed end of the cup 22 into the positioning groove 41. In addition, the cup 22 rotated into the positioning groove 41 needs a certain force to be rotated out of the positioning groove 41, so that the exposed end of the cup 22 in the positioning groove 41 can be limited by the design as above, but the smooth sliding of the cup 22 out of the positioning groove 41 after the extraction is not affected.

[0035] Further, the outer side of each protrusion 51 is respectively provided with a guide block 6, and the bottom surface of each guide block 6 is an arc-shaped surface and is slidably fitted with the top surface of the corresponding side of the opening end of the positioning member 4 along the length direction. The cooperation of each guide block 6 can better guide the cup 22, and the guide block 6 can bear part of the force applied by the brewing plug assembly 3 to the brewing assembly 2 during extraction, thereby further avoiding the structural deformation of the brewing assembly 2. Preferably, the shape of each guide block 6 is a cylinder parallel to the rotation center axis of the brewing assembly 2. In this way, the brewing assembly 2 in the rotating state can be better rotated into the positioning groove 41 in a self-centering manner under the action of each guide block 6, so that the positioning action of the positioning member 4 on the brewing assembly 2 is more smooth. Further preferably, there are at least two guide blocks 6 on each protrusion 51 and the guide blocks 6 are respectively arranged at the two ends of the protrusion 51 along the length direction. On the one hand, the exposed end of the cup 22 can be more stably rotated into or out of the positioning groove 41, and on the other hand, the design of multiple guide blocks 6 can better bear the force applied by the brewing plug assembly 3 during extraction. In the embodiment, as shown in FIG. 4, two guide blocks 6 are respectively arranged on each protrusion 51, and preferably, each end of the opening end of the positioning member 4 is smoothly rounded, so that the cooperation of the guide blocks 6 facilitates the guiding of the exposed end of the cup 22 into the positioning groove 41. Figure 5

[0036] In the embodiment, as shown in FIG. 4, two guide blocks 6 are respectively arranged on each protrusion 51, and preferably, each end of the opening end of the positioning member 4 is smoothly rounded, so that the cooperation of the guide blocks 6 facilitates the guiding of the exposed end of the cup 22 into the positioning groove 41. Figure 2 , Figure 5 and Figure 7 ​As shown, the outer surface of the exposed end of the cup 22 is provided with a radially extending convex ring 5 in the circumferential direction, two sides of the convex ring 5 are the convex strips 51, and the bottom surface of the convex ring 5 is arc-shaped and convex on the other two sides. The top surface of the positioning member 4 is arc-shaped and convex from the open end to the closed end and matches the bottom surface of the convex ring 5. Not only is it convenient to realize the arrangement of the convex strips 51 on the exposed end of the cup 22, but also the structure of the convex strips 51 is more stable, and the closed convex ring 5 design can better withstand the force applied by the brewing plug assembly 3, so that the structural deformation of the brewer assembly 2 can be better avoided.

[0037] In addition, as Figure 2 shown, the top surface of the convex ring 5 is flat and flush with the rim of the cup opening of the cup 22, thereby reducing the residue of dirt on the cup opening of the cup 22, especially during the slagging process, facilitating the cleaning of the cup 22. As Figure 4 shown, the positioning member 4 has a gap with the shell 21 in the moving direction of the brewing plug 32. Thus, the force applied by the brewing plug assembly to the shell 21 during extraction can be avoided, which is beneficial to avoid the structural deformation of the brewer assembly 2. As Figure 2 and Figure 3 shown, the first brewing surface 320 of the brewing plug 32 and the second brewing surface 230 of the piston 23 are both flat, which can make the force more uniform when pressing the powder, so that the coffee powder can be pressed more uniformly, and the extraction effect can be improved.

Claims

1. A coffee maker comprising a frame (1), a brewer assembly (2) and a brew plug assembly (3), wherein, The brewing device assembly (2) comprises a housing (21) in which a cup cylinder (22) is arranged, and a piston (23) is arranged in the cup cylinder (22); the brewing plug assembly (3) comprises a bracket (31) and a brewing plug (32) movably arranged on the bracket (31) along the axis direction of the brewing plug (32); and the brewing device assembly (2) is rotatably arranged on the frame (1), and the brewing plug assembly (3) is arranged in the frame (1) in an inclined manner relative to the vertical direction; in the state of brewing coffee, the brewing device assembly (2) is rotated to be opposite to the brewing plug assembly (3), characterized in that the frame (1) is further provided with a positioning member (4), the positioning member (4) is provided with a positioning groove (41) into which the exposed end of the cup cylinder (22) is inserted, and the cup cylinder (22) is inserted into the positioning groove (41) so that the brewing device assembly (2) is positioned opposite to the brewing plug assembly (3), and meanwhile, the positioning member (4) is limited on the cup cylinder (22) along the moving direction of the brewing plug (32).

2. The coffee maker of claim 1, wherein, The positioning member (4) is a block arranged in parallel below the brewing plug assembly (3), and one side of the block is recessed from outside to inside to form the positioning groove (41).

3. The coffee maker of claim 2, wherein, The groove wall shape of the closed end of the positioning groove (41) is matched with the outer surface of the exposed end of the cup cylinder (22) to be able to hold the cup cylinder (22), and the groove walls on both sides of the open end respectively extend along the tangent direction of the groove wall of the closed end.

4. A coffee maker as claimed in claim 2 or 3, characterized in that The exposed end surface of the cup cylinder (22) is respectively provided with a protruding strip (51) extending along the length direction of the side on which the protruding strip (51) is arranged, and the bottom surface of each protruding strip (51) is respectively slidably matched with the top surface of the corresponding side of the open end of the positioning member (4) along the length direction, so as to guide the exposed end of the cup cylinder (22) into or out of the positioning groove (41).

5. The coffee maker of claim 4, wherein, The bottom surface of each protruding strip (51) and the top surface of the corresponding side of the open end of the positioning member (4) are respectively arc-shaped surfaces extending along the length direction of the arc-shaped surfaces.

6. The coffee maker of claim 5, wherein, The outer side of each protruding strip (51) is respectively provided with a guide block (6), and the bottom surface of each guide block (6) is an arc-shaped surface and is slidably matched with the top surface of the corresponding side of the open end of the positioning member (4) along the length direction.

7. The coffee maker of claim 6, wherein, The shape of each guide block (6) is a cylinder parallel to the rotation center axis of the brewing device assembly (2).

8. The coffee maker of claim 7, wherein, There are at least two guide blocks (6) on each protruding strip (51) and the guide blocks (6) are respectively arranged at the two ends of the protruding strip (51) along the length direction.

9. The coffee maker of claim 4, wherein, The outer surface of the exposed end of the cup cylinder (22) is provided with a protruding ring (5) extending in the radial direction along the circumference, two sides of the protruding ring (5) are the protruding strips (51), the bottom surface of the protruding ring (5) is arc-shaped along the other two sides, and the top surface of the positioning member (4) is arc-shaped from the open end to the closed end and is matched with the bottom surface of the protruding ring (5).

10. The coffee maker of claim 9, wherein, The top surface of the protruding ring (5) is a plane and is flush with the rim of the cup mouth of the cup cylinder (22).

11. The coffee maker of claim 3, wherein, There is a gap between the positioning member (4) and the housing (21) along the moving direction of the brewing plug (32).

12. A coffee maker as claimed in any one of claims 1 to 3, characterized in that The first brewing face (320) of the brewing plug (32) and the second brewing face (230) of the piston (23) are both planar.

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