Coffee machine

Abstract

The utility model discloses a coffee machine. The bean grinder comprises a machine body and a grinder, a bean bin, a motor and a speed reducer are arranged at the top of the machine body, an output shaft of the motor is in transmission connection with the input end of the speed reducer, the output shaft of the motor is perpendicular to the output end of the speed reducer, and the output end of the speed reducer is vertically arranged in the bean bin. A rotating shaft driving the movable grinding disc to rotate in the grinder is in transmission connection with the output end of the speed reducer, and a bean falling channel is arranged between the bean bin and the grinder. The grinder is connected with the bean grinding device through the rotary buckle, so that the whole grinder can be conveniently taken down and cleaned.

Description

Technical Field

[0001] The utility model relates to a coffee machine. Background Art

[0002] The grinder used in existing bean grinding devices (such as coffee machines) can grind beans into powder. However, it is difficult to clean the grinder after use, and the bean powder remains and then deteriorates and molds, which affects the reuse of the bean grinding device. Later, people improved the grinder and set the fixed grinding plate of the grinder to a detachable structure, which reduces the difficulty of cleaning the inside of the grinder, but there are dead corners that are difficult to clean. Utility Model Content

[0003] The utility model aims to provide a coffee machine with a grinder which is convenient to disassemble.

[0004] The purpose of the utility model is achieved in this way.

[0005] A coffee machine comprises a machine body and a grinder. A bean bin, a motor and a reducer are arranged on the top of the machine body. The output shaft of the motor is transmission-connected with the input end of the reducer. The output shaft of the motor and the output end of the reducer are vertically arranged. The output end of the reducer is vertically arranged in the bean bin. The grinder can be detachably arranged on the machine body and below the bean bin. The rotating shaft in the grinder that drives the rotating grinding disc to rotate is transmission-connected with the output end of the reducer. A bean dropping channel is arranged between the bean bin and the grinder.

[0006] The above technical solution can be further improved as follows.

[0007] Furthermore, a suspended portion is provided on one side of the top of the machine body, the bean falling channel is provided in the suspended portion, a screw button groove is provided at the bottom of the suspended portion, a screw button is provided on the top of the grinder, the screw button and the screw button groove are screw-connected, and the rotating shaft of the grinder is inserted into the output end of the reducer.

[0008] The motor is arranged horizontally on the top of the machine body, the reducer is a reduction gear box, a worm is arranged on the output shaft of the motor, the input end gear of the worm reducer is meshed for transmission, the output end gear of the reducer is located in the center of the bean bin, a transmission shaft hole is arranged at the bottom of the output end gear of the reducer, the transmission shaft hole and the rotating shaft are coaxially arranged, the connecting end of the rotating shaft is inserted into the transmission shaft hole, and the connecting end of the rotating shaft and the transmission shaft hole are non-circularly matched.

[0009] A funnel bracket is provided on the machine body just below the grinder, a coffee funnel is clamped in the funnel bracket, a powder receiving tray is provided on the machine body just below the coffee funnel, and an opening for collecting splashed coffee powder is provided on one side of the bottom of the powder receiving tray.

[0010] The grinder includes a grinding disc support, a lifting support, an adjusting ring, the rotating shaft, a movable grinding disc and a fixed grinding disc. The top center of the grinding disc support is rotatably connected to the rotating shaft. The fixed grinding disc can be detachably arranged in the grinding disc support through the lifting support. The bottom of the lifting support is rotatably connected to the rotating shaft, and the lifting support and the rotating shaft slide axially along the rotating shaft. The movable grinding disc can be detachably sleeved on the rotating shaft. The rotating shaft drives the movable grinding disc to rotate in the fixed grinding disc. The adjusting ring is rotatably sleeved on the outer periphery of the grinding disc support. The lifting support is provided with a positioning part passing through the grinding disc support. The inner periphery of the adjusting ring is provided with an internal thread. The positioning part is threadedly connected to the internal thread. The adjusting ring rotates to drive the lifting support and the fixed grinding disc to move up and down to adjust the grinding gap between the fixed grinding disc and the movable grinding disc. The grinder is easy to disassemble and convenient to clean.

[0011] A first fixing seat is provided at the center of the grinding disc support, a first positioning hole is provided in the first fixing seat, a first positioning sleeve is provided in the first positioning hole, the top of the rotating shaft passes through the first positioning sleeve and extends a connecting end, and the connecting end is used for transmission connection with the driving mechanism of the bean grinding device. The first positioning sleeve facilitates the positioning and installation of the top of the rotating shaft. The connecting end facilitates the disassembly and connection of the grinder and the bean grinding device.

[0012] A scraper plate and a first spring are sleeved on the rotating shaft. The rotating shaft and the bottom of the movable grinding disc are limited in cooperation. One end of the first spring abuts against the rotating connection part of the grinding disc bracket and the rotating shaft. The other end of the first spring pushes the scraper plate and the movable grinding disc to abut against each other. An upper limit protrusion is provided on the outer periphery of the rotating shaft near the top. The bottom of the rotating shaft is inserted into the first positioning sleeve until the upper limit protrusion and the first positioning sleeve abut against each other. A lower limit protrusion and a retaining ring are provided on the outer periphery of the rotating shaft near the bottom. The movable grinding disc is limited to the lower limit protrusion by the retaining ring. The first spring limits the position of the scraper plate and the fixed grinding disc, so that the scraper plate keeps sealing the top surface of the movable grinding disc to prevent bean powder from entering between the movable grinding disc and the rotating shaft. The elastic force of the first spring facilitates the assembly and disassembly of the retaining ring, the movable grinding disc and the scraper plate.

[0013] A second fixing seat is provided at the bottom center of the lifting bracket, a second positioning hole is provided in the second fixing seat, a second positioning sleeve is provided in the second positioning hole, and the bottom of the rotating shaft is inserted into the second positioning sleeve for rotation. The second positioning sleeve facilitates the positioning and installation of the bottom of the rotating shaft, and the rotating shaft is positioned both up and down, and the rotation is not easy to deflect.

[0014] The rotating buckle is provided at the outer periphery of the top of the grinding disc bracket, the lifting bracket includes a first lifting bracket and a second lifting bracket, the second fixing seat is arranged at the center of the second lifting bracket, a fixing hole is arranged in the first lifting bracket, a first stopper is arranged at the bottom of the fixing hole, the fixed grinding disc limiter is arranged in the fixing hole, the second lifting bracket is detachably connected to the bottom of the first lifting bracket, the fixed grinding disc is clamped between the second lifting bracket and the first lifting bracket, and the positioning part extends from the outer periphery of the top of the first lifting bracket. The second lifting bracket is easy to disassemble and assemble, and it is convenient to take out the fixed grinding disc for cleaning.

[0015] The grinding disc bracket includes a first fixing bracket and a second fixing bracket. The first fixing bracket is provided with the first fixing seat at the center. The first fixing bracket extends downward out of the surrounding wall. The bottom of the surrounding wall and the second fixing bracket are detachably connected and fixed. An annular groove is formed between the first fixing bracket, the outer side of the surrounding wall and the second fixing bracket. The adjustment ring rotates in the annular groove. The bottom of the second fixing bracket is provided with a clearance hole extending from the bottom of the lifting bracket. The bottom of the first lifting bracket extends from the clearance hole. The top of the first fixing bracket is provided with the said rotary buckle. After the second lifting bracket and the fixed grinding disc are taken out, the clearance hole facilitates the removal of the movable grinding disc and the scraper plate for cleaning, so that the overall cleaning of the grinder is more thorough.

[0016] The beneficial effects of the utility model are as follows.

[0017] The grinder and the bean grinding device of the utility model are connected by a screw-on buckle, which facilitates the removal of the entire grinder for cleaning. The movable grinding disc and the fixed grinding disc of the grinder are detachable, which facilitates the cleaning of the inside of the grinder, the movable grinding disc and the fixed grinding disc, and does not easily leave any cleaning dead corners, thereby avoiding residual bean powder and making the use more hygienic and clean. The grinder and the bean grinding device are connected by a screw-on buckle, which facilitates the removal of the entire grinder for cleaning. The second lifting frame is easy to assemble and disassemble, and is convenient for taking out the fixed grinding disc for cleaning. After the second lifting frame and the fixed grinding disc are taken out, the clearance hole facilitates the removal of the movable grinding disc and the powder scraper for cleaning, so that the overall cleaning of the grinder is more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic structural diagram of the first embodiment.

[0019] Figure 2 This is a schematic diagram of the decomposed structure of Example 1.

[0020] Figure 3 It is a schematic cross-sectional structure diagram of the first embodiment.

[0021] Figure 4 Schematic diagram of the structure of the grinder in Example 1 (top view).

[0022] Figure 5 Schematic diagram of the structure of the grinder in Example 1 (bottom view).

[0023] Figure 6 Schematic diagram of the exploded structure of the grinder in Example 1 (top view).

[0024] Figure 7 Schematic diagram of the exploded structure of the grinder in Example 1 (bottom view).

[0025] Figure 8 Schematic diagram of the cross-sectional structure of the grinder in Example 1.

[0026] Fig. 9 Schematic diagram of another cross-sectional structure of the grinder in Example 1. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Example 1, see Figure 1-9 As shown, a coffee machine comprises a body 10 and a grinder 1. A bean bin 8, a motor 11 and a reducer 9 are arranged on the top of the body 10. The output shaft of the motor 11 is transmission-connected with the input end of the reducer 9. The output shaft of the motor 11 and the output end of the reducer 9 are vertically arranged. The output end of the reducer 9 is vertically arranged in the bean bin 8. The grinder 1 can be detachably arranged on the body 10 and below the bean bin 8. The rotating shaft 5 driving the rotating grinding disc 6 in the grinder 1 is transmission-connected with the output end of the reducer 9. A bean falling channel 13 is arranged between the bean bin 8 and the grinder 1.

[0029] A suspended portion 12 is provided on one side of the top of the body 10, and the bean falling channel 13 is provided in the suspended portion 12. A screw button groove 100 is provided at the bottom of the suspended portion 12. A screw button 20 is provided on the top of the grinder 1, and the screw button 20 and the screw button groove 100 are screw-connected. The rotating shaft 5 of the grinder 1 is inserted into the output end of the reducer 9.

[0030] The motor 11 is horizontally arranged on the top of the body 10, the reducer 9 is a reduction gear box, a worm 14 is arranged on the output shaft of the motor 11, the worm 14 is meshed with the input end gear 91 of the reducer 9 for transmission, the output end gear 92 of the reducer 9 is located at the center of the bean bin 8, a transmission shaft hole 93 is arranged at the bottom of the output end gear 92 of the reducer 9, the transmission shaft hole 93 and the rotating shaft 5 are coaxially arranged, the connecting end 50 of the rotating shaft 5 is inserted into the transmission shaft hole 93, and the connecting end 50 of the rotating shaft 5 and the transmission shaft hole 93 are non-circularly matched.

[0031] The machine body 10 is provided with a funnel bracket 15 directly below the grinder 1, and a coffee funnel 16 is clamped in the funnel bracket 15. The machine body 10 is provided with a powder receiving tray 17 directly below the coffee funnel 16, and an opening 18 for collecting the splashed coffee powder is provided on one side of the bottom of the powder receiving tray 17. Preferably, the funnel bracket 15 is detachable, that is, one end of the funnel bracket 15 is plugged and fixed to the machine body 10. Alternatively, a space for the grinder 1 to be installed and removed is reserved between the funnel bracket 15 and the suspended portion 12.

[0032] The grinder 1 includes a grinding disc bracket 2, a lifting bracket 3, an adjusting ring 4, the rotating shaft 5, a movable grinding disc 6 and a fixed grinding disc 7. The top center of the grinding disc bracket 2 is rotatably connected to the rotating shaft 5. The fixed grinding disc 7 is detachably arranged in the grinding disc bracket 2 through the lifting bracket 3. The bottom of the lifting bracket 3 is rotatably connected to the rotating shaft 5, and the lifting bracket 3 and the rotating shaft 5 slide axially along the rotating shaft 5. The movable grinding disc 6 is detachably sleeved on the rotating shaft 5. The rotating shaft 5 drives the movable grinding disc 6 to rotate in the fixed grinding disc 7. The adjusting ring 4 is rotatably sleeved on the outer periphery of the grinding disc bracket 2. The lifting bracket 3 is provided with a positioning portion 30 passing through the grinding disc bracket 2. The inner periphery of the adjusting ring 4 is provided with an internal thread 40. The positioning portion 30 is threadedly connected to the internal thread 40. The adjusting ring 4 rotates to drive the lifting bracket 3 and the fixed grinding disc 7 to move up and down to adjust the grinding gap between the fixed grinding disc 7 and the movable grinding disc 6.

[0033] A first fixing seat 23 is provided at the center of the grinding disc support 2, a first positioning hole 27 is provided in the first fixing seat 23, a first positioning sleeve 28 is provided in the first positioning hole 27, and the top of the rotating shaft 5 passes through the first positioning sleeve 28 and extends out of the connecting end 50. Preferably, the grinding disc support 2 fixes the first fixing seat 23 through a plurality of first arms 29, and a grinding inlet is formed between the grinding disc support 2, the first arms 29 and the first fixing seat 23, and the grinding inlet is located at the outlet of the bean falling channel 13.

[0034] A scraper plate 52 and a first spring 53 are sleeved on the rotating shaft 5. The rotating shaft 5 and the bottom of the movable grinding disc 6 are limitedly matched. One end of the first spring 53 is against the rotating connection part between the grinding disc bracket 2 and the rotating shaft 5, and the other end of the first spring 53 pushes the scraper plate 52 and the movable grinding disc 6 to abut against each other.

[0035] An upper limit protrusion 51 is provided on the outer circumference of the rotating shaft 5 near the top, and the bottom of the rotating shaft 5 is inserted into the first positioning sleeve 28 until the upper limit protrusion 51 and the first positioning sleeve 28 are abutted against each other. A lower limit protrusion 54 and a retaining ring 55 are provided on the outer circumference of the rotating shaft 5 near the bottom, and the movable grinding disc 6 is limited on the lower limit protrusion 54 by the retaining ring 55.

[0036] A positioning shaft hole 60 and a transmission member 61 are provided on the bottom surface of the movable grinding disc 6. The transmission member 61 is sleeved on the rotating shaft 5, and the transmission member 61 and the rotating shaft 5 are non-circularly matched. The transmission member 61 and the positioning shaft hole 60 are radially limited, and the movable grinding disc 6 and the rotating shaft 5 rotate synchronously through the transmission member 61.

[0037] A second fixing seat 33 is provided at the bottom center of the lifting bracket 3, a second positioning hole 37 is provided in the second fixing seat 33, a second positioning sleeve 38 is provided in the second positioning hole 37, and the bottom of the rotating shaft 5 is inserted into the second positioning sleeve 38 for rotation. Preferably, the grinding disc bracket 2 fixes the first fixing seat 23 through a plurality of second arms 39, and a grinding outlet is formed between the grinding disc bracket 2, the second arms 39 and the second fixing seat 33, and the grinding outlet is located directly above the coffee funnel 16.

[0038] The lifting bracket 3 includes a first lifting frame 31 and a second lifting frame 32. The second fixing seat 33 is arranged at the center of the second lifting frame 32. A fixing hole 34 is arranged in the first lifting frame 31. A first stopper 35 is arranged at the bottom of the fixing hole 34. The fixed grinding disc 7 is limitedly arranged in the fixing hole 34. The second lifting frame 32 is detachably connected to the bottom of the first lifting frame 31. The fixed grinding disc 7 is clamped between the second lifting frame 32 and the first lifting frame 31. The positioning portion 30 extends from the outer periphery of the top of the first lifting frame 31. Preferably, the second lifting frame 32 and the first lifting frame 31 are connected and fixed by screws. A positioning protrusion 36 is arranged on the inner side wall of the fixing hole 34. A positioning groove 71 is arranged on the outer periphery of the fixed grinding disc 7. The positioning protrusion 36 and the positioning groove 71 constitute the limiting fit between the fixed grinding disc 7 and the fixing hole 34. A guide block 310 extends from the outer periphery of the top of the first lifting frame 31.

[0039] The grinding disc support 2 includes a first fixing frame 21 and a second fixing frame 22. The first fixing frame 21 is provided with the first fixing seat 23 at the center. The first fixing frame 21 extends downwardly out of a surrounding wall 24. The bottom of the surrounding wall 24 and the second fixing frame 22 are detachably connected and fixed. An annular groove 25 is formed between the first fixing frame 21, the outer side of the surrounding wall 24 and the second fixing frame 22. The adjusting ring 4 rotates in the annular groove 25. The bottom of the second fixing frame 22 is provided with a clearance hole 26 extending from the bottom of the lifting bracket 3. The bottom of the first lifting bracket 31 extends out from the clearance hole 26. The first fixing frame 21 is provided with the said turn buckle 20 at the outer periphery of the top.

[0040] The surrounding wall 24 is provided with a clearance notch 241, and the positioning portion 30 passes through the clearance notch 241 and is threadedly connected with the internal thread 40 of the adjustment ring 4. Preferably, a guide block 310 extends from the outer periphery of the top of the first lifting frame 31, and the positioning portion 30 is provided on the outer side of the guide block 310, and the guide block 310 moves up and down in the clearance notch 241.

[0041] The bottom surface of the adjusting ring 4 is provided with a mounting hole 41, and a second spring 42 and a positioning column 43 are arranged in the mounting hole 41. The top of the second fixing frame 22 is provided with a lower convex edge 221, and the top surface of the lower convex edge 221 is provided with a plurality of positioning grooves 222, and the plurality of positioning grooves 222 are arranged in a ring shape along the annular groove 25. The elastic force of the second spring 42 pushes the positioning column 43 to be inserted into any positioning groove 222, and the adjusting ring 4 rotates, and the positioning column 43 moves to another positioning groove 222. Preferably, a handle portion 44 is provided on the outer periphery of the adjusting ring 4, and the mounting hole 41 and the handle portion 44 are arranged in the same radial direction of the adjusting ring 4.

[0042] An upper convex edge 211 is provided on the top of the first fixing frame 21, and a sealing ring 212 and a limiting column 213 are provided on the outer periphery of the first fixing frame 21. A guide groove 214 is provided on the sealing ring 212 corresponding to the limiting column 213. The sealing ring 212 is sleeved between the outer periphery of the first fixing frame 21, the upper convex edge 211 and the adjusting ring 4. The guide groove 214 cooperates with the limiting column 213, and the adjusting ring 4 drives the sealing ring 212 to move up and down along the limiting column 213.

[0043] The rotating grinder 1 of the utility model can be removed from the body 10 as a whole for cleaning. During the cleaning process of the grinder 1, the fixing screws of the second lifting frame 32 can be loosened, the second lifting frame 32 and the fixed grinding disc 7 can be removed for cleaning, the retaining ring 55 can be removed, and the moving grinding disc 6 and the scraper plate 52 can also be removed from the rotating shaft 5 for cleaning.

Claims

1. A coffee machine, comprising a machine body and a grinder, a bean bin, a motor and a reducer are arranged on the top of the machine body, the output shaft of the motor is transmission-connected with the input end of the reducer, the output shaft of the motor and the output end of the reducer are vertically arranged, the output end of the reducer is vertically arranged in the bean bin, the grinder can be detachably arranged on the machine body and below the bean bin, the rotating shaft driving the rotating grinding disc in the grinder is transmission-connected with the output end of the reducer, and a bean dropping channel is arranged between the bean bin and the grinder.

2. The coffee machine according to claim 1, characterized in that: A suspended part is provided on one side of the top of the machine body, the bean falling channel is provided in the suspended part, a screw button groove is provided at the bottom of the suspended part, a screw button is provided on the top of the grinder, the screw button and the screw button groove are screw-connected, and the rotating shaft of the grinder is inserted into the output end of the reducer.

3. The coffee machine according to claim 2, characterized in that: The motor is arranged horizontally on the top of the machine body, the reducer is a reduction gear box, a worm is arranged on the output shaft of the motor, the input end gear of the worm reducer is meshed for transmission, the output end gear of the reducer is located in the center of the bean bin, a transmission shaft hole is arranged at the bottom of the output end gear of the reducer, the transmission shaft hole and the rotating shaft are coaxially arranged, the connecting end of the rotating shaft is inserted into the transmission shaft hole, and the connecting end of the rotating shaft and the transmission shaft hole are non-circularly matched.

4. The coffee machine according to claim 1, wherein the body A funnel bracket is arranged just below the grinder, a coffee funnel is clamped in the funnel bracket, a powder receiving tray is arranged on the machine body just below the coffee funnel, and an opening for collecting splashed coffee powder is arranged on one side of the bottom of the powder receiving tray.

5. The coffee machine according to claim 2, characterized in that: The grinder includes a grinding disc bracket, a lifting bracket, an adjusting ring, the rotating shaft, a movable grinding disc and a fixed grinding disc, and is characterized in that the top center of the grinding disc bracket is rotatably connected to the rotating shaft, the fixed grinding disc is detachably arranged in the grinding disc bracket through the lifting bracket, the bottom of the lifting bracket is rotatably connected to the rotating shaft, and the lifting bracket and the rotating shaft slide axially along the rotating shaft, the movable grinding disc is detachably sleeved on the rotating shaft, the rotating shaft drives the movable grinding disc to rotate in the fixed grinding disc, the adjusting ring is rotatably sleeved on the outer periphery of the grinding disc bracket, the lifting bracket is provided with a positioning part that passes through the grinding disc bracket, the inner periphery of the adjusting ring is provided with an internal thread, the positioning part is threadedly connected to the internal thread, and the rotation of the adjusting ring drives the lifting bracket and the fixed grinding disc to move up and down to adjust the grinding gap between the fixed grinding disc and the movable grinding disc.

6. The coffee machine according to claim 5, characterized in that: A first fixing seat is provided at the center of the grinding disc bracket, a first positioning hole is provided in the first fixing seat, a first positioning sleeve is provided in the first positioning hole, the top of the rotating shaft passes through the first positioning sleeve and extends a connecting end, which is used for transmission connection with the driving mechanism of the grinding device.

7. The coffee machine according to claim 5, characterized in that: A scraper plate and a first spring are sleeved on the rotating shaft, and the rotating shaft and the bottom of the movable grinding disc are matched with each other. One end of the first spring is against the rotating connection part of the grinding disc bracket and the rotating shaft, and the other end of the first spring pushes the scraper plate and the movable grinding disc to be against each other. An upper limit protrusion is provided on the outer periphery of the rotating shaft near the top, and the bottom of the rotating shaft is inserted into the first positioning sleeve until the upper limit protrusion and the first positioning sleeve are against each other. A lower limit protrusion and a retaining ring are provided on the outer periphery of the rotating shaft near the bottom, and the movable grinding disc is limited to the lower limit protrusion by the retaining ring.

8. The coffee machine according to claim 5, characterized in that: A second fixing seat is provided at the bottom center of the lifting bracket, a second positioning hole is provided in the second fixing seat, a second positioning sleeve is provided in the second positioning hole, and the bottom of the rotating shaft is inserted into the second positioning sleeve for rotation.

9. The coffee machine according to claim 6, characterized in that: The buckle is provided on the outer periphery of the top of the grinding disc bracket, the lifting bracket includes a first lifting frame and a second lifting frame, the second fixing seat is arranged at the center of the second lifting frame, a fixing hole is arranged in the first lifting frame, a first stopper is arranged at the bottom of the fixing hole, the fixed grinding disc limiter is arranged in the fixing hole, the second lifting frame is detachably connected to the bottom of the first lifting frame, the fixed grinding disc is clamped between the second lifting frame and the first lifting frame, and the positioning portion extends from the outer periphery of the top of the first lifting frame.

10. The coffee machine according to claim 9, characterized in that: The grinding wheel bracket includes a first fixing frame and a second fixing frame. The first fixing frame is provided with the first fixing seat at the center. The first fixing frame extends downward from the surrounding wall. The bottom of the surrounding wall and the second fixing frame are detachably connected and fixed. An annular groove is formed between the first fixing frame, the outer side of the surrounding wall and the second fixing frame. The adjusting ring rotates in the annular groove. The bottom of the second fixing frame is provided with a clearance hole extending from the bottom of the lifting bracket. The bottom of the first lifting bracket extends from the clearance hole. The top of the first fixing frame is provided with the said buckle.

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