Portable coffee machine

Abstract

A portable coffee machine comprises a machine body and a drinking cup, the machine body comprises a machine shell and a driving mechanism arranged in the machine shell, the machine body is detachably connected with a bean grinding assembly or a water injection assembly, and the bean grinding assembly is in transmission connection with the driving mechanism; the powder extraction cup is detachably arranged in the drinking cup, and the drinking cup is detachably connected with the bean grinding assembly or the water injection assembly; the bean grinding assembly is used for grinding coffee powder and conveying the coffee powder into the extraction powder cup; the water injection assembly is used for injecting water into the extraction powder cup for extraction. The bean grinding assembly comprises a grinding bin detachably connected with the machine shell, an outer tool bit is fixedly arranged in the grinding bin, an inner tool bit matched with the outer tool bit is rotationally arranged in the outer tool bit, and the inner tool bit is connected with a first rotating shaft. The upper end of the first rotating shaft is in transmission connection with the driving mechanism; and the lower end of the first rotating shaft is connected with a powder distributor. The portable bean grinder has the advantages of being capable of grinding beans and brewing and portable.

Description

Technical Field

[0001] The utility model relates to a coffee machine, in particular to a portable coffee machine. Background Art

[0002] Chinese patent document No. CN 207707779 U disclosed a multifunctional portable electric coffee machine on August 10, 2018, which includes a cup cover, a grinding body and a brewing cup which are connected in sequence from top to bottom, the cup cover is a cup body and is buckled on the grinding body; the upper and lower ends of the grinding body are respectively provided with a coffee bean grinding body with a bean inlet and a powder outlet; the brewing cup is connected to the lower end of the grinding body, and a filter net for coffee brewing is built in it, the brewing cup and the filter net are non-circular bodies, and the filter net can be placed on the open end of the brewing cup after lifting and rotating; the top surface of the cup cover is provided with a cover body, the cover body can be installed in conjunction with the open end of the cup cover, and a water outlet guide port is provided on the cover body to form a water cup structure that can be built with warm water to realize coffee brewing. This portable coffee machine only has the function of grinding beans, and cannot perform the function of injecting water into the brewing cup for extraction, so it needs further improvement. Utility Model Content

[0003] The object of the present invention is to provide a portable coffee machine which can both grind beans and brew coffee, so as to overcome the shortcomings of the prior art.

[0004] A portable coffee machine designed for this purpose comprises a machine body and a drinking cup, wherein the machine body comprises a casing and a driving mechanism arranged in the casing, and its structural characteristics are that the machine body is detachably connected with a bean grinding assembly or a water injection assembly, and the bean grinding assembly is transmission-connected with the driving mechanism; the extraction powder cup is detachably arranged in the drinking cup, and the drinking cup is detachably connected to the bean grinding assembly or the water injection assembly; the bean grinding assembly is used for grinding coffee powder and conveying coffee powder to the extraction powder cup; and the water injection assembly is used for injecting water into the extraction powder cup for extraction.

[0005] Furthermore, the bean grinding assembly includes a grinding bin detachably connected to the casing, an outer cutter head is fixedly arranged in the grinding bin, an inner cutter head matching the outer cutter head is rotatably arranged in the outer cutter head, the inner cutter head is connected to a first rotating shaft, and the first rotating shaft is transmission-connected to the driving mechanism; a grinding gap is formed between the outer cutter head and the inner cutter head; the extraction powder cup is arranged below the grinding gap and the inner cavity of the extraction powder cup is communicated with the grinding gap.

[0006] Furthermore, the upper end of the first rotating shaft is transmission-connected to the driving mechanism; the lower end of the first rotating shaft is connected to a powder distributor, and the powder distributor is located below the grinding gap.

[0007] Furthermore, the powder distributor is at least partially located in the extraction powder cup.

[0008] Further, the powder distributor is columnar or drum-shaped, and the powder distributor rotates together with the first rotating shaft.

[0009] Further, the water injection assembly includes a water injection chamber connected to the machine housing. A water outlet is provided at the bottom of the water injection chamber. A water injector for controlling the opening and closing of the water outlet is provided below the water injection chamber. The water injector is fixedly connected to a second rotating shaft. The second rotating shaft is movably and rotatably arranged relative to the water injection chamber up and down with respect to the water injector. The second rotating shaft is in transmission connection with the driving mechanism. A water sealing spring for applying an upward acting force to the second rotating shaft or the water injector is provided on the water injection chamber. The elastic acting force of the water sealing spring drives the water injector to cooperate with the water injection chamber to keep the water outlet in a closed state. When the second rotating shaft is in plug-in transmission with the driving mechanism, it drives the second rotating shaft and the water injector to move downward relative to the water injection chamber so that the water outlet is in an open state.

[0010] Further, a fixed sleeve is provided in the water injection chamber. The second rotating shaft is arranged in the fixed sleeve. A spring end cover that moves up and down relative to the fixed sleeve is provided in the fixed sleeve. The second rotating shaft is rotatably arranged in the spring end cover. The water sealing spring is provided in the fixed sleeve and sleeved on the second rotating shaft. The lower end of the water sealing spring is connected to the water injection chamber, and its upper end is connected to the spring end cover.

[0011] Further, a water distribution chamber with an open upper end and communicating with the water outlet is provided in the water injector. A water injection port is provided at the bottom of the water injector. The number of the water injection ports is two or more and they are arranged circumferentially. The opening direction of the water injection port faces the extraction powder cup located in the drinking cup.

[0012] Further, a sealing portion is provided on the water injector. The sealing portion cooperates with the water injection chamber to keep the water outlet in a closed state.

[0013] Further, extraction holes or filtering holes are provided at the bottom of the extraction powder cup.

[0014] The body in this utility model is detachably connected with a coffee bean grinding assembly or a water injection assembly, and the coffee bean grinding assembly is in transmission connection with the driving mechanism; the extraction powder cup is detachably arranged in the drinking cup, and the drinking cup is detachably connected with the coffee bean grinding assembly or the water injection assembly; the coffee bean grinding assembly is used for grinding coffee beans and conveying the ground coffee powder into the extraction powder cup; the water injection assembly is used for injecting water into the extraction powder cup for extraction; in the coffee bean grinding mode, the body, the coffee bean grinding assembly and the extraction powder cup are connected in sequence, and the body drives the coffee bean grinding assembly to operate, so that the ground coffee powder enters the extraction powder cup; in the water injection mode, the body, the water injection assembly and the drinking cup are connected in sequence, and the water injection assembly injects water into the extraction powder cup for extraction, and the obtained coffee liquid flows into the drinking cup after extraction; the whole operation process is simple and efficient. Description of the Drawings

[0015] Figure 1 It is a schematic cross-sectional structure diagram of the coffee machine in the coffee bean grinding mode.

[0016] Figure 2 It is a schematic partial structure diagram of the coffee machine in the coffee bean grinding mode.

[0017] Figure 3 It is a schematic cross-sectional structure diagram of the coffee machine in the water injection mode.

[0018] Figure 4 For Figure 3 The enlarged structure diagram at position A in

[0019] Figure 5 It is a schematic three-dimensional structure diagram of the water injection assembly.

[0020] Figure 6 It is an exploded structure diagram of the water injection assembly.

[0021] Figure 7 It is a schematic partial structure diagram of the coffee machine in the water injection mode.

[0022] In the figure: 10 is the body, 100 is the machine shell, 110 is the driving mechanism, 20 is the coffee bean grinding assembly, 210 is the grinding bin, 220 is the outer cutter head, 230 is the inner cutter head, 240 is the first rotating shaft, 250 is the grinding gap, 30 is the water injection assembly, 310 is the water injection bin, 311 is the water outlet, 320 is the water injector, 321 is the water distribution cavity, 322 is the water injection port, 323 is the sealing part, 330 is the water sealing spring, 340 is the fixed sleeve, 341 is the communication port, 350 is the second rotating shaft, 360 is the spring end cover, 40 is the drinking cup, 50 is the extraction powder cup, 510 is the extraction hole, 60 is the powder distributing device, and the dotted arrows in the figure indicate the direction of the coffee powder falling. Detailed Embodiments

[0023] The present utility model will be further described below with reference to the drawings and embodiments.

[0024] See Figures 1 - 7 Figures 1 - 7 , a portable coffee machine, comprising a machine body 10 and a drinking cup 40. The machine body 10 includes a housing 100 and a driving mechanism 110 disposed within the housing 100. The machine body 10 is detachably connected to a grinding assembly 20 or a water injection assembly 30, and the grinding assembly 20 or the water injection assembly 30 is in transmission connection with the driving mechanism 110; an extraction powder cup 50 is detachably disposed within the drinking cup 40, and the drinking cup 40 is detachably connected to the grinding assembly 20 or the water injection assembly 30; the grinding assembly 20 is configured to grind coffee beans and convey the ground coffee powder into the extraction powder cup 50; and the water injection assembly 30 is configured to inject water into the extraction powder cup 50 for extraction.

[0025] In the grinding mode, the machine body, the grinding assembly, and the extraction powder cup are sequentially connected. The machine body drives the grinding assembly to operate, and the ground coffee powder obtained after grinding enters the extraction powder cup located within the drinking cup 40. In the water injection mode, the machine body, the water injection assembly, and the drinking cup are sequentially connected. The water injection assembly injects water into the extraction powder cup for extraction, and the coffee liquid obtained after extraction flows into the drinking cup.

[0026] The bottom of the extraction powder cup 50 is evenly distributed with extraction holes 510, and the coffee liquid drips from the extraction holes 510 into the drinking cup 60 below.

[0027] The grinding assembly 20 includes a grinding chamber 210 detachably connected to the housing 100. An outer cutter head 220 is fixedly disposed within the grinding chamber 210, and an inner cutter head 230 that cooperates with the outer cutter head 220 is rotatably disposed within the outer cutter head 220. The inner cutter head 230 is connected to a first rotating shaft 240, and the first rotating shaft 240 is in transmission connection with the driving mechanism 110; a grinding gap 250 is formed between the outer cutter head 220 and the inner cutter head 230; the extraction powder cup 50 is disposed below the grinding gap 250, and the inner cavity of the extraction powder cup 50 communicates with the grinding gap 250.

[0028] Further, the grinding chamber 210 and the housing 100 are connected by means of threads, snap-fits, buckles, or existing connection structures.

[0029] In this embodiment, the driving mechanism 110 includes a reduction mechanism connected to a driving motor.

[0030] In the grinding mode, the driving mechanism 110 is powered on and started to drive the first rotating shaft 240 to rotate, so as to drive the inner cutter head 230 to rotate relative to the outer cutter head 220, thereby grinding the coffee beans located therebetween. The ground coffee powder obtained after grinding falls from the grinding gap 250 into the extraction powder cup 50 below.

[0031] See Figure 1 andFigure 2 The upper end of the first rotating shaft 240 is in transmission connection with the driving mechanism 110; the lower end of the first rotating shaft 240 is connected with a powder distributing device 60, and the powder distributing device 60 is located below the grinding gap 250.

[0032] At least a part of the powder distributing device 60 is located in the extraction powder cup 50.

[0033] The powder distributing device 60 is columnar or drum-shaped, and the powder distributing device 60 rotates together with the first rotating shaft 240.

[0034] The coffee powder falling downward from the grinding gap 250 can uniformly fall into the extraction powder cup 50 under the action of the powder distributing device 60. During the grinding process, the powder distributing device 60 rotates together with the first rotating shaft 240, and under the acting force of rotation, the coffee powder can be more evenly distributed.

[0035] See Figures 3 to 7 The water injection assembly 30 includes a water injection chamber 310 connected to the machine housing 100. A water outlet 311 is provided at the bottom of the water injection chamber 310. A water injector 320 for controlling the opening and closing of the water outlet 311 is provided below the water injection chamber 310. The water injector 320 is fixedly connected to a second rotating shaft 350. The second rotating shaft 350 is movably and rotationally arranged relative to the water injection chamber 310 up and down together with the water injector 320; the second rotating shaft 350 is in transmission connection with the driving mechanism 110; a water sealing spring 330 for applying an upward acting force to the second rotating shaft 350 or the water injector 320 is provided on the water injection chamber 310. The elastic acting force of the water sealing spring 330 drives the water injector 320 to cooperate with the water injection chamber 310 to keep the water outlet 311 in a closed state; when the second rotating shaft 350 is in plug-in transmission with the driving mechanism 110, it drives the second rotating shaft 350 and the water injector 320 to move downward relative to the water injection chamber 310, so that the water outlet 311 is in an open state.

[0036] When the water injection assembly 30 is not assembled with the machine body 10, under the action of the water sealing spring 330, the water injector 320 fits the water outlet 311, and the water outlet 311 is in a closed state.

[0037] When injecting water, first connect the water injection assembly 30 with the drinking cup 40, and the extraction powder cup 50 is located inside the drinking cup 40. Then, assemble the water injection assembly 30 with the machine body 10. During the assembly process, the second rotating shaft 350 is in plug-in transmission with the driving mechanism 110. During this process, the second rotating shaft 350 is pressed downward to drive the water injector 320 to move away from the water outlet 311, so that the water outlet 311 is in an open state, so that the extraction water in the drinking cup 40 flows downward through the water outlet 311 to the water injector 320.

[0038] In this embodiment, the second rotating shaft 350 is in transmission connection with the driving mechanism 110. The driving mechanism 110 drives the second rotating shaft 350 to rotate, thereby driving the water injector 320 to rotate. The rotation of the water injector 320 can evenly distribute the water flowing out from the water outlet 311 into the extraction powder cup 50, so that the coffee powder and water in the extraction powder cup 50 are fully mixed to achieve sufficient extraction.

[0039] Furthermore, during the downward movement of the second rotating shaft 350 and the water injector 320, the water sealing spring 330 is compressed to store energy. When the water injection assembly 30 is disassembled and separated from the machine body 10, the water sealing spring 330 will release the stored energy without restraint, driving the second rotating shaft 350 and the water injector 320 to move upward to close the water outlet 311 again.

[0040] A first coupler is provided on the speed reduction mechanism of the driving mechanism 110, and second couplers corresponding to the first coupler are respectively provided at the end portions of the first rotating shaft 240 and the second rotating shaft 350. The second coupler and the first coupler are in transmission connection through plug-in cooperation. Thus, the driving mechanism 110 can drive the first rotating shaft 240 or the second rotating shaft 350 to rotate.

[0041] See Figure 3 , a fixed sleeve 340 is provided in the water injection chamber 310, and the second rotating shaft 350 is arranged in the fixed sleeve 340; a spring end cover 360 that moves up and down relative to the fixed sleeve 340 is provided in the fixed sleeve 340, and the second rotating shaft 350 is rotatably arranged in the spring end cover 360; the water sealing spring 330 is arranged in the fixed sleeve 340 and sleeved on the second rotating shaft 350, the lower end of the water sealing spring 330 is connected to the water injection chamber 310, and its upper end is connected to the spring end cover 360.

[0042] A water distribution chamber 321 with an open upper end and communicating with the water outlet 311 is provided in the water injector 320. The bottom of the water injector 320 is provided with water injection ports 322. There are two or more water injection ports 322 arranged circumferentially, and the opening directions of the water injection ports 322 face the extraction powder cup 50 located in the drinking cup 40.

[0043] A sealing portion 323 is provided on the water injector 320. The sealing portion 323 cooperates with the water injection chamber 310 to keep the water outlet 311 in a closed state.

[0044] The bottom of the extraction powder cup 50 is provided with extraction holes or filter holes 510.

[0045] The water outlet 311 is arranged inside the bottom of the fixed sleeve 340, and a communication port 341 is arranged at the bottom of the fixed sleeve 340. The water located in the water injection chamber 310 enters the fixed sleeve 340 through the communication port 341 and then flows to the water outlet 311.

[0046] Furthermore, the second rotating shaft 350 is rotatably arranged on the spring end cover 360 by means of bearings.

[0047] In this embodiment, the water flowing out from the water outlet 311 enters the water distribution chamber 321 and then flows downward from the water injection port 322 into the extraction powder cup 50. Under the action of the water injector 320 being driven to rotate by the second rotating shaft 350, the originally vertically falling water column will fall into the extraction powder cup 50 in a spiral shape, so as to be evenly distributed in the extraction powder cup 50.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0049] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable coffee machine, comprising a machine body (10) and a drinking cup (40), wherein the machine body (10) comprises a housing (100) and a driving mechanism (110) disposed in the housing (100), wherein the driving mechanism (110) is The machine body (10) is detachably connected to a bean grinding assembly (20) or a water injection assembly (30), and the bean grinding assembly (20) or the water injection assembly (30) is in transmission connection with the driving mechanism (110); the extraction powder cup (50) is detachably arranged in the drinking cup (40), and the drinking cup (40) is detachably connected to the bean grinding assembly (20) or the water injection assembly (30); the bean grinding assembly (20) is used for grinding coffee powder and conveying coffee powder to the extraction powder cup (50); and the water injection assembly (30) is used for injecting water into the extraction powder cup (50) for extraction.

2. A portable coffee machine according to claim 1, characterized in that The bean grinding assembly (20) comprises a grinding chamber (210) detachably connected to the housing (100); an outer cutter head (220) is fixedly arranged in the grinding chamber (210); an inner cutter head (230) matched with the outer cutter head (220) is rotatably arranged in the outer cutter head (220); the inner cutter head (230) is connected to a first rotating shaft (240); the first rotating shaft (240) is drivingly connected to the driving mechanism (110); a grinding gap (250) is formed between the outer cutter head (220) and the inner cutter head (230); the extraction powder cup (50) is arranged below the grinding gap (250), and the inner cavity of the extraction powder cup (50) is connected to the grinding gap (250).

3. A portable coffee machine according to claim 2, characterized in that The upper end of the first rotating shaft (240) is drivingly connected to the driving mechanism (110); the lower end of the first rotating shaft (240) is connected to a powder distributor (60), and the powder distributor (60) is located below the grinding gap (250).

4. A portable coffee machine according to claim 3, characterized in that The powder distributor (60) is at least partially located in the extraction powder cup (50).

5. A portable coffee machine according to claim 3, characterized in that The powder distributor (60) is column-shaped or drum-shaped, and the powder distributor (60) rotates together with the first rotating shaft (240).

6. A portable coffee machine according to claim 1, characterized in that The water injection assembly (30) comprises a water injection bin (310) connected to the housing (100); a water outlet (311) is arranged at the bottom of the water injection bin (310); a water injector (320) for controlling the opening and closing of the water outlet (311) is arranged below the water injection bin (310); the water injector (320) is fixedly connected to a second rotating shaft (350); the second rotating shaft (350) and the water injector (320) are arranged to move up and down and rotate relative to the water injection bin (310); the second rotating shaft (350) is in driving connection with the driving mechanism (110); the water injection bin (310) is connected to the driving mechanism (110); The water tank (310) is provided with a water sealing spring (330) for applying an upward force to the second rotating shaft (350) or the water injector (320); the elastic force of the water sealing spring (330) drives the water injector (320) to cooperate with the water injection tank (310), so that the water outlet (311) is in a closed state; when the second rotating shaft (350) and the driving mechanism (110) are plugged in for transmission, the second rotating shaft (350) and the water injector (320) are driven to move downward relative to the water injection tank (310), so that the water outlet (311) is in an open state.

7. A portable coffee machine according to claim 6, characterized in that A fixed sleeve (340) is arranged in the water filling bin (310), and the second rotating shaft (350) is arranged in the fixed sleeve (340); a spring end cover (360) is arranged in the fixed sleeve (340) and moves up and down relative to the fixed sleeve (340), and the second rotating shaft (350) is rotatably arranged in the spring end cover (360); the water sealing spring (330) is arranged in the fixed sleeve (340) and sleeved on the second rotating shaft (350), and the lower end of the water sealing spring (330) is connected to the water filling bin (310), and the upper end of the water sealing spring (330) is connected to the spring end cover (360).

8. A portable coffee machine according to claim 6, characterized in that The water injector (320) is provided with a water dividing chamber (321) with an upper end opening and communicating with the water outlet (311). The bottom of the water injector (320) is provided with a water injection port (322). There are more than two water injection ports (322) arranged in a circumferential direction. The openings of the water injection ports (322) face toward the extraction powder cup (50) located in the drinking cup (40).

9. A portable coffee machine according to claim 6, characterized in that The water injector (320) is provided with a sealing portion (323), and the sealing portion (323) cooperates with the water injection bin (310) to place the water outlet (311) in a sealed state.

10. A portable coffee machine according to any one of claims 1 to 9, characterized in that The bottom of the extraction powder cup (50) is provided with an extraction hole or a filtering hole (510).

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