Grinding fine adjusting structure of coffee machine

Abstract

The utility model discloses a coffee machine grinding fine adjusting structure which comprises a grinding cylinder and a grinding assembly located in a grinding cavity of the grinding cylinder, the grinding assembly comprises a movable grinding wheel, a static grinding wheel and a transmission shaft, the transmission shaft is arranged in a base in the center of the grinding cavity, and the input end of the transmission shaft is connected with a driving device of a coffee machine. The movable grinding wheel is arranged at the output end of the transmission shaft, a transmission plate is arranged at the bottom of the movable grinding wheel, a pin column inserted into a pin hole in the bottom surface of the movable grinding wheel is arranged on the inner surface of the transmission plate, the transmission shaft is driven by the driving device to drive the transmission plate to enable the movable grinding wheel to rotate relative to the static grinding wheel, and grinding of coffee powder is achieved. The thread assembly is arranged on the shaft head of the output end of the transmission shaft where the movable grinding wheel is installed, the axial position of the movable grinding wheel on the transmission shaft can be changed by adjusting the thread assembly, bidirectional adjustment of the movable grinding wheel and the static grinding wheel is achieved, the adjusting range of a gap is enlarged, fine adjustment can be completed under the requirement for large thickness, and the grinding wheel can be adjusted conveniently. And the grinding effect and the use experience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage machines, in particular to a fine grinding adjustment structure for a coffee machine. Background Art

[0002] Current coffee machines are generally equipped with a bean grinding device, which can complete the entire process of grinding coffee beans into powder and brewing coffee from coffee powder on one coffee machine. By adjusting the gap between the moving grinding wheel and the static grinding wheel through the adjustment device on the bean grinding device, coffee powder of different coarseness and fineness can be obtained, so that the brewed coffee has a richer taste. Since the moving grinding wheel is connected to the driving device of the coffee machine, the general adjustment structure is set on the static grinding wheel, and the static grinding wheel is driven to move axially by rotating the adjustment structure to change the gap between the moving grinding wheel and the static grinding wheel. However, due to the spatial structure of the bean grinding device, the rotation space of the adjustment structure is limited, and the axial movement distance of the static grinding wheel is small, which can only achieve limited gap adjustment.

[0003] CN202023350208.6 discloses a coffee bean grinder, comprising a material storage container for raw material buffering, a grinding mechanism and a driving device for driving the grinding mechanism, wherein the material storage container is arranged on the grinding mechanism; wherein the grinding mechanism comprises a grinding fixed ring, a grinding rotating head and a lifting and adjusting assembly for adjusting the gap between the grinding fixed ring and the grinding rotating head, wherein the grinding fixed ring is arranged on the lifting and adjusting assembly; the grinding rotating head is provided with a toothed inclined surface for grinding raw materials, and the grinding fixed ring is provided with a toothed grinding surface corresponding to the toothed inclined surface. In this technical solution, the lifting and adjusting assembly for adjusting the gap is connected to the grinding fixed ring, and the lifting and adjusting assembly is rotated to lift and lower the grinding fixed ring to change the gap. The gap changed by adjusting only the static grinding component is limited, and cannot meet the fine adjustment under larger coarseness requirements. Utility Model Content

[0004] The utility model aims to provide a coffee machine grinding fine adjustment structure to solve the problem that the coarseness adjustment structure is set on the static grinding part, and only adjusting the static grinding part to change the gap between it and the dynamic grinding part is limited, and the fine adjustment under larger coarseness requirements cannot be met, so as to overcome the shortcomings of the prior art.

[0005] The utility model provides a coffee machine grinding fine adjustment structure through the following technical scheme, including a grinding cylinder and a grinding assembly, the grinding assembly is located in the grinding chamber of the grinding cylinder, the grinding assembly includes a movable grinding wheel, a static grinding wheel and a transmission shaft, the transmission shaft is arranged in a base in the center of the grinding chamber, the input end of the transmission shaft is connected to the driving device of the coffee machine, the movable grinding wheel is arranged at the output end of the transmission shaft, a transmission plate is provided at the bottom of the movable grinding wheel, a pin hole is provided on the bottom surface of the movable grinding wheel, a pin column inserted into the pin hole is provided on the inner surface of the transmission plate, and the transmission shaft drives the transmission plate under the drive of the driving device to make the movable grinding wheel rotate relative to the static grinding wheel to achieve the grinding of coffee powder.

[0006] Furthermore, a threaded component is provided on the shaft head at the output end of the transmission shaft, a flat position is provided on the shaft body adjacent to the threaded component, a flat hole matching the flat position is provided at the center of the transmission plate, and the threaded component can be adjusted to move the axial position of the transmission plate and the movable grinding wheel on the transmission shaft, thereby changing the gap between the movable grinding wheel and the static grinding wheel to grind coffee powder of different coarseness.

[0007] Furthermore, the threaded assembly includes an external thread provided on the outer side of the shaft head at the output end, a matching nut and a gasket.

[0008] Furthermore, the external thread and the nut are both reverse threads.

[0009] Furthermore, the gasket is arranged between the transmission plate and the movable grinding wheel.

[0010] Furthermore, a spring is sleeved on the shaft of the rotating shaft between the movable grinding wheel and the base.

[0011] The utility model has the following beneficial effects: a threaded assembly is provided on the shaft head at the output end of the transmission shaft on which the movable grinding wheel is installed, and the threaded assembly can be adjusted to change the axial position of the movable grinding wheel on the transmission shaft, thereby realizing two-way adjustment of the movable grinding wheel and the static grinding wheel, expanding the adjustment range of the gap, and completing fine adjustment under larger coarseness requirements, thereby improving the grinding effect and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of a coffee machine grinding fine adjustment structure described in the utility model.

[0013] Figure 2 It is an exploded schematic diagram of a coffee machine grinding fine adjustment structure described in the utility model.

[0014] Figure 3 It is a cross-sectional view of a coffee machine grinding fine adjustment structure described in the utility model.

[0015] Figure 4 for Figure 3 Schematic diagram of the enlarged portion A.

[0016] Figure 5 This is a structural schematic diagram of the static grinding wheel related components of the coffee machine fine grinding adjustment structure described in the utility model.

[0017] Figure 6 This is a structural schematic diagram of the components related to the movable grinding wheel of the coffee machine fine grinding adjustment structure described in the utility model.

[0018] Figure 7 This is an overall schematic diagram of a coffee machine with a fine grinding adjustment structure according to the utility model.

[0019] in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names in the figure is:

[0020] 1 grinding cylinder, 2 grinding assembly, 4 grinding chamber, 7 dynamic grinding wheel, 8 static grinding wheel, 9 transmission shaft, 10 output end, 11 input end, 14 spring, 16 flat position, 17 transmission plate, 18 static grinding wheel seat, 21 outer adjustment ring, 22 positioning column, 23 adjustment ring, 24 positioning hole, 25 guide groove, 26 thread, 27 convex tooth, 31 sealing plate, 33 flat hole, 36 base, 37 pin hole, 38 pin column, 39 external thread, 40 nut, 41 gasket. DETAILED DESCRIPTION

[0021] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0022] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0023] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] Refer to the following Figure 1-Figure 6 A coffee machine grinding fine adjustment structure is described according to some embodiments of the present application.

[0027] A coffee machine grinding fine adjustment structure comprises a grinding cylinder 1 and a grinding assembly 2. The grinding assembly 1 is located in a grinding chamber 4 of the grinding cylinder 2. The grinding assembly 2 comprises a moving grinding wheel 7, a static grinding wheel 8 and a transmission shaft 9. The transmission shaft 9 is arranged in a base 36 at the center of the grinding chamber 4. An input end 11 of the transmission shaft 9 is connected to a driving device of the coffee machine. The moving grinding wheel 7 is arranged at an output end 10 of the transmission shaft 9. A transmission plate 17 is arranged at the bottom of the moving grinding wheel 7. A pin hole 37 is arranged on the bottom surface of the moving grinding wheel 7. A pin column 38 inserted into the pin hole 37 is arranged on the inner surface of the transmission plate 17. The transmission shaft 9 drives the transmission plate 17 under the drive of the driving device to make the moving grinding wheel 7 rotate relative to the static grinding wheel 8. Since there is a gap between the moving grinding wheel 7 and the static grinding wheel 8, the rotating moving grinding wheel 7 and the static grinding wheel 8 jointly grind the coffee beans entering the grinding chamber 4 into coffee powder, and the size of the gap between the moving grinding wheel 7 and the static grinding wheel 8 determines the coarseness of the ground coffee powder.

[0028] Among them, the shaft head of the output end 10 of the transmission shaft 9 is provided with a thread assembly, which includes an external thread 39 provided on the outer side of the shaft head of the output end 11, a matching nut 40, and a gasket 41 arranged between the transmission plate 17 and the movable grinding wheel 7. The shaft body of the transmission shaft 9 adjacent to the external thread 39 is provided with a flat position 16, and the center of the transmission plate 17 is provided with a flat hole 33 matched with the flat position 16. The nut 40 is screwed into the external thread 39 to complete the end closure of the movable grinding wheel 7 at the output end 10. By changing the number or thickness of the gasket 41, the axial position of the movable grinding wheel 7 on the transmission shaft 9 can be adjusted, so that the gap between the movable grinding wheel 7 and the static grinding wheel 8 is changed without adjusting the static grinding wheel 8, so as to achieve the grinding of coffee powder of different coarseness.

[0029] Among them, the external thread 39 and the nut 40 are both reverse threads, which can ensure that during the rotation of the transmission shaft 9, the external thread 39 and the nut 40 can remain in a locked state and will not loosen by themselves.

[0030] Since the spring 14 is sleeved on the shaft of the rotating shaft 9 between the movable grinding wheel 7 and the base 36, the spring 14 always pushes the movable grinding wheel 7, the gasket 41 and the transmission plate 17 are closely attached and pressed against the nut 40, so that the movable grinding wheel 7 can maintain a stable and effective driving connection with the driving device when it is adjusted to different axial positions. At the same time, the spring 14 can also automatically adjust the balance of the movable grinding wheel 7 when it rotates to grind coffee beans, thereby improving the stability of the grinding process.

[0031] A static grinding wheel seat 18 is provided at the bottom of the grinding chamber 4, and the static grinding wheel 8 is placed on the static grinding wheel seat 18. A sealing plate 31 is also provided at the bottom opening of the grinding chamber 4, and the sealing plate 31 is connected to the lower part of the static grinding wheel seat 18. An adjusting ring 23 is provided on the threaded sleeve of the static grinding wheel 8, and an outer adjusting ring 21 is provided between the static grinding wheel seat 18 and the sealing plate 31.

[0032] Since the inner wall of the adjusting ring 23 is provided with a thread 26 and the outer wall of the static grinding wheel 8 is provided with a convex tooth 27 corresponding to the thread 26, the static grinding wheel 8 can be moved axially by rotating the adjusting ring 23 through the interaction between the thread 26 and the convex tooth 27, thereby changing the gap between the dynamic grinding wheel 7 and the static grinding wheel 8 without adjusting the dynamic grinding wheel 8.

[0033] A positioning column 22 is provided on the inner bottom surface of the outer adjustment ring 21, a positioning hole 24 is provided on the outer edge of the bottom of the adjustment ring 23, and a fan-shaped guide groove 25 is provided on the bottom of the static grinding wheel seat 18. The positioning column 22 passes through the guide groove 25 and extends into the positioning hole 24 to form a linkage assembly between the outer adjustment ring 21 and the adjustment ring 23. Under the action of the linkage assembly, rotating the outer adjustment ring 21 can easily drive the adjustment ring 23 to rotate.

[0034] In the above technical solution, the movable grinding wheel 7 and the static grinding wheel 8 can change the gap between the movable grinding wheel 7 and the static grinding wheel 8 through their own independent adjustment without adjusting the other party, so as to adjust the grinding coarseness and fineness. In fact, the adjustment of the movable grinding wheel 7 and the static grinding wheel 8 basically does not restrict each other and can be carried out at the same time. Moreover, since the adjustment of the movable grinding wheel 7 directly changes the axial position of the movable grinding wheel 7, it has a larger adjustment range and can meet greater coarseness and fineness requirements; while the adjustment range of the static grinding wheel 8 is smaller, the rotating adjustment ring 23 can achieve a slight change in the axial position of the static grinding wheel 8. Therefore, by combining the adjustment of the movable grinding wheel 7 and the static grinding wheel 8, fine adjustment under greater coarseness and fineness requirements can be achieved.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coffee machine grinding fine adjustment structure, comprising a grinding cylinder and a grinding assembly, wherein the grinding assembly is located in a grinding chamber of the grinding cylinder, and is characterized in that: The grinding assembly includes a movable grinding wheel, a stationary grinding wheel and a transmission shaft, wherein the transmission shaft is arranged in a base in the center of the grinding chamber, the input end of the transmission shaft is connected to the driving device of the coffee machine, the movable grinding wheel is arranged at the output end of the transmission shaft, a transmission plate is provided at the bottom of the movable grinding wheel, a pin hole is provided on the bottom surface of the movable grinding wheel, a pin column inserted into the pin hole is provided on the inner surface of the transmission plate, and the transmission shaft drives the transmission plate under the drive of the driving device to make the movable grinding wheel rotate relative to the stationary grinding wheel to grind the coffee powder.

2. The coffee machine grinding fine adjustment structure according to claim 1, characterized in that: The shaft head at the output end of the transmission shaft is provided with a threaded component, and a flat position is provided on the shaft body adjacent to the threaded component. A flat hole matching the flat position is provided at the center of the transmission plate. The threaded component can be adjusted to move the axial position of the transmission plate and the movable grinding wheel on the transmission shaft, thereby changing the gap between the movable grinding wheel and the static grinding wheel to grind coffee powder of different coarseness and fineness.

3. The coffee machine grinding fine adjustment structure according to claim 2, characterized in that: The threaded component comprises an external thread arranged on the outer side of the shaft head at the output end, a matching nut and a gasket.

4. The coffee machine grinding fine adjustment structure according to claim 3, characterized in that: The external thread and the nut are both reverse threads.

5. The coffee machine grinding fine adjustment structure according to claim 3, characterized in that: The gasket is arranged between the transmission plate and the movable grinding wheel.

6. The coffee machine grinding fine adjustment structure according to claim 1, characterized in that: A spring is sleeved on the shaft body of the rotating shaft between the movable grinding wheel and the base.

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