Coffee machine with adjustable grind slab spacing

Abstract

This utility model discloses a variable fine-tuning structure for the spacing of coffee machine grinding discs, relating to the field of coffee machine processing technology. It has the advantage of conveniently adjusting the spacing between the annular fixed blade disc and the conical moving blade disc. The key technical points are: it includes a bean hopper for holding coffee beans and a powder hopper for holding coffee powder. An adjustment seat is provided between the bean hopper and the powder hopper. The upper surface of the adjustment seat is fixed to the bottom end of the bean hopper, and an annular outer sleeve is fixed to the lower surface. The outer sleeve is sleeved on the outside of the powder hopper and is threadedly fixed to the powder hopper.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine processing technology, specifically to a variable fine-tuning structure for the spacing of coffee machine grinding discs. Background Technology

[0002] Coffee is a beverage made from roasted and ground coffee beans. As one of the world's three major beverages, it is a popular drink worldwide, along with cocoa and tea. Its unique aroma has made it increasingly popular. With the improvement of living standards, coffee has gradually become a common beverage in people's lives. Coffee brewed with freshly ground coffee powder has a richer aroma and better taste than coffee brewed with commercially available coffee powder. Therefore, people increasingly prefer to use coffee machines to grind their own coffee and adjust the taste of the coffee according to their own preferences.

[0003] Current coffee-making methods involve grinding coffee beans with a coffee machine and then brewing the ground coffee powder. However, existing coffee machines have the drawback of producing coffee powder with a fixed coarseness during the grinding process. The gap between the grinding mechanism is a fixed size, resulting in coffee powder with the same coarseness. This makes it difficult for users to easily adjust the grind to suit different preferences, leading to a relatively uniform grinding effect. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a variable fine-tuning structure for the grinding disc spacing of a coffee machine, which has the advantage of conveniently adjusting the spacing between the annular fixed blade disc and the conical moving blade disc.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a variable fine-tuning structure for the grinding disc spacing of a coffee machine, including a bean hopper for holding coffee beans and a powder hopper for holding coffee powder. An adjustment seat is provided between the bean hopper and the powder hopper. The upper surface of the adjustment seat is fixed to the bottom end of the bean hopper, and an annular outer sleeve is fixed to the lower surface. The outer sleeve is sleeved on the outside of the powder hopper and threadedly fixed to the powder hopper. A control groove is provided in the middle of the inner cavity of the adjustment seat. An upper connecting groove connecting the control groove and the bean hopper is passed through the upper surface, and a lower connecting groove connecting the control groove, the outer sleeve, and the powder hopper is passed through the lower surface. A conical moving blade is connected to the inner cavity of the control groove through a lower mounting component. An annular fixed blade is connected to the inner cavity of the bean hopper through an upper mounting component. The inner cavity of the control groove is also provided with a distance adjustment component for controlling the movement of the annular fixed blade to adjust the distance between the annular fixed blade and the conical moving blade.

[0007] By adopting the above technical solution, the coffee bean container, adjusting seat, and outer tube are integrated into one structure. The coffee bean container is threadedly connected to the outer tube, which facilitates the assembly and disassembly of the coffee bean container. The control slot is connected to the conical moving cutter disc through the lower mounting component, which supports the conical moving cutter disc without affecting its rotation. The inner cavity of the coffee bean container is connected to the annular fixed cutter disc through the upper mounting component. The annular fixed cutter disc and the conical moving cutter disc cooperate with each other to grind the coffee beans in the coffee bean container. When it is necessary to adjust the grind size of the coffee beans, the adjusting component provides power to drive the annular fixed cutter disc to move in the vertical direction.

[0008] Preferably, the upper mounting assembly includes a follower tube disposed inside the bean cylinder and slidably connected to the bean cylinder. The follower tube has a hollow inner cavity and is open at both the upper and lower ends. An annular support plate is fixed to the inner cavity wall of the follower tube. The annular fixed blade disc has an inverted T-shaped cross section and overlaps the annular support plate with its bottom end penetrating through the annular support plate.

[0009] Preferably, the lower mounting assembly includes an inner sleeve fixed to the bottom of the control slot and closing the lower connecting slot. The inner sleeve has a hollow inner cavity and an open top. The inner sleeve is fitted around the annular fixed cutter disc and is slidably connected to the annular fixed cutter disc. The middle position of the bottom of the inner sleeve is rotatably connected to the conical moving cutter disc. The conical moving cutter disc extends into the annular fixed cutter disc and cooperates with the annular fixed cutter disc. A drive shaft is fixed at the middle position of the top of the conical moving cutter disc. The top of the drive shaft extends out of the inner sleeve, the annular fixed cutter disc, and the follower tube. The bottom end of the inner sleeve has several discharge holes that connect the inner cavity of the annular fixed cutter disc, the inner cavity of the inner sleeve, the lower connecting slot, the inner cavity of the outer sleeve, and the inner cavity of the powder cylinder.

[0010] Preferably, the adjustment assembly includes a hollow worm gear disposed in and rotatably connected to the control slot, the hollow worm gear being sleeved outside the inner sleeve and rotatably connected to the inner sleeve, a worm gear meshing with the hollow worm gear being rotatably connected in the control slot, one end of the worm gear passing through the adjustment seat and rotatably connected to the adjustment seat, a handle being coaxially fixed to the end of the worm gear passing through the adjustment seat, a drive tube being coaxially fixed to the upper surface of the hollow worm gear, a follower tube being sleeved outside the drive tube and threadedly connected to the drive tube, and an annular support plate being located above the drive tube.

[0011] Preferably, the control slot is provided with a prompting component that indicates the rotation angle of the worm gear.

[0012] Preferably, the prompting component includes a plurality of metal protrusions fixed on the outer circumference of the worm gear. The plurality of metal protrusions are arranged in an array with the center line of the worm gear as the center. The top of the metal protrusions is an inclined surface. The top of the control slot is provided with a groove, and a metal spring piece that cooperates with the metal protrusions is engaged in the groove.

[0013] The beneficial effects of this utility model are as follows: the bean container, the adjusting seat, and the outer tube are integrated into one structure. The powder container is threadedly connected to the outer tube, which facilitates the disassembly and assembly of the powder container. The control groove is connected to the conical moving cutter disc through the lower mounting component, which supports the conical moving cutter disc without affecting its rotation. The inner cavity of the bean container is connected to the annular fixed cutter disc through the upper mounting component. The annular fixed cutter disc and the conical moving cutter disc cooperate with each other to grind the coffee beans in the bean container. When it is necessary to adjust the coarseness of the coffee bean grind, the adjusting component provides power to drive the annular fixed cutter disc to move in the vertical direction. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0016] Figure 2 This is a schematic diagram of the overall exploded structure of this embodiment;

[0017] Figure 3 This is a cross-sectional structural schematic diagram of the adjustment seat in this embodiment;

[0018] Figure 4 This is a schematic diagram illustrating the structure of the material discharge hole in this embodiment;

[0019] Figure 5 This is a cross-sectional structural diagram of the inner sleeve in this embodiment;

[0020] Figure 6 This is a schematic diagram illustrating the structure of the metal spring in this embodiment.

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1. Bean cylinder; 2. Powder cylinder; 3. Adjusting seat; 4. Outer sleeve; 5. Control groove; 6. Upper connecting groove; 7. Lower connecting groove; 8. Conical moving cutter disc; 9. Lower mounting assembly; 901. Inner sleeve; 902. Drive shaft; 903. Discharge hole; 10. Annular fixed cutter disc; 11. Upper mounting assembly; 1101. Follower tube; 1102. Annular support plate; 12. Adjustment assembly; 1201. Hollow worm gear; 1202. Worm; 1203. Handle; 1204. Drive tube; 13. Metal protrusion; 14. Metal spring; 15. Sealing cover. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The coffee machine features a variable, finely adjustable grinding disc spacing structure, such as... Figure 1-6 It includes a bean hopper 1 for holding coffee beans and a powder hopper 2 for holding coffee powder. The bean hopper 1 has a hollow inner cavity and an open bottom. The powder hopper 2 has a hollow inner cavity and an open top. An adjustment seat 3 is provided between the bean hopper 1 and the powder hopper 2. The upper surface of the adjustment seat 3 is fixed to the bottom end of the bean hopper 1, and the lower surface is fixed with an annular outer tube 4. The outer tube 4 has a hollow inner cavity and an annular structure with open top and bottom ends. The outer tube 4 is sleeved on the outside of the powder hopper 2 and is threadedly fixed to the powder hopper 2.

[0025] like Figure 2 and Figure 3 and Figure 4 A control groove 5 is provided in the middle of the inner cavity of the adjusting seat 3. An upper connecting groove 6 is provided through the upper surface to connect the control groove 5 and the bean cylinder 1. A lower connecting groove 7 is provided through the lower surface to connect the control groove 5, the outer sleeve 4 and the powder cylinder 2. A conical moving blade 8 is connected to the inner cavity of the control groove 5 through the lower mounting component 9. An annular fixed blade 10 is connected to the inner cavity of the bean cylinder 1 through the upper mounting component 11. The inner cavity of the control groove 5 is also provided with a distance adjustment component 12 to adjust the distance between the annular fixed blade 10 and the conical moving blade 10 by controlling the movement of the annular fixed blade 10. The annular fixed blade 10 and the conical moving blade 8 are existing technologies, so they will not be described in detail here.

[0026] like Figure 2 and Figure 3 and Figure 4 The bean container 1, the adjusting seat 3, and the outer tube 4 are integrated into one structure. The powder container 2 is threadedly connected to the outer tube 4, which facilitates the disassembly and assembly of the powder container 2. The control groove 5 is connected to the conical moving blade 8 through the lower mounting component 9, which supports the conical moving blade 8 without affecting its rotation. The inner cavity of the bean container 1 is connected to the annular fixed blade 10 through the upper mounting component 11. The annular fixed blade 10 and the conical moving blade 8 cooperate with each other to grind the coffee beans in the bean container 1. When it is necessary to adjust the coarseness of the coffee bean grind, the adjusting component 12 provides power to drive the annular fixed blade 10 to move in the vertical direction.

[0027] like Figure 2 and Figure 3 and Figure 4The upper mounting assembly 11 includes a follower tube 1101 disposed inside the bean cylinder 1 and slidably connected to the bean cylinder 1. The follower tube 1101 has a hollow inner cavity with openings at both the top and bottom. An annular support plate 1102 is fixed to the inner cavity wall of the follower tube 1101. The annular fixed blade disc 10 has an inverted T-shaped cross section. The annular fixed blade disc 10 overlaps the annular support plate 1102 and its bottom end penetrates through the annular support plate 1102. The annular fixed blade disc 10 and the annular support plate 1102 are detachably fixedly connected by screws. The integrated follower tube 1101 and the annular support plate 1102 support the annular fixed blade disc 10, facilitating the use of the annular fixed blade disc 10.

[0028] like Figure 2 and Figure 3 and Figure 4 and Figure 5 The lower mounting component 9 includes an inner sleeve 901 fixed to the bottom of the control groove 5 and enclosing the lower connecting groove 7. The inner sleeve 901 has a hollow inner cavity and an open top. The inner sleeve 901 is fitted outside the annular fixed cutter disc 10 and is slidably connected to the annular fixed cutter disc 10. The middle position of the bottom of the inner sleeve 901 is rotatably connected to the conical moving cutter disc 8. The conical moving cutter disc 8 extends into the annular fixed cutter disc 10 and cooperates with the annular fixed cutter disc 10. A drive shaft 902 is fixed at the middle position of the top of the conical moving cutter disc 8. The top of the drive shaft 902 extends out of the inner sleeve 901, the annular fixed cutter disc 10 and the follower tube 1101. The bottom end of the inner sleeve 901 has several discharge holes 903 that connect the inner cavity of the annular fixed cutter disc 10, the inner cavity of the inner sleeve 901, the lower connecting groove 7, the inner cavity of the outer sleeve 4 and the inner cavity of the powder cylinder 2.

[0029] like Figure 2 and Figure 3 and Figure 4 and Figure 5 The inner sleeve 901 is fixed to the bottom of the control groove 5. The inner sleeve 901 supports the conical moving cutter disc 8 without affecting its rotation. Coffee beans are placed in the bean hopper 1 and the follower tube 1101 and enter the inner cavity of the annular fixed cutter disc 10. They are ground through the gap between the annular fixed cutter disc 10 and the conical moving cutter disc 8. The ground coffee bean powder passes through the discharge hole 903, the lower connecting groove 7, the outer sleeve 4 and enters the powder hopper 2. The inner sleeve 901 is fixed with a screen covering the discharge hole 903. Only coffee powder of suitable particle size can pass through the screen and enter the powder hopper.

[0030] like Figure 2 and Figure 3 and Figure 4 The inner sleeve 901 has a rubber sealing ring fixed to the inner cavity groove wall to fill the gap between the inner cavity groove wall of the inner sleeve 901 and the outer wall of the annular fixed cutter disc 10, reducing the possibility of powder overflowing from the gap between the inner sleeve 901 and the annular fixed cutter disc 10.

[0031] like Figure 2 and Figure 3 and Figure 4 The adjustment assembly includes a hollow worm gear 1201 disposed within and rotatably connected to the control slot 5. The hollow worm gear 1201 is sleeved outside and rotatably connected to the inner sleeve 901. A worm 1202, meshing with the hollow worm gear 1201, is also rotatably connected within the control slot 5. One end of the worm 1202 extends through and is rotatably connected to the adjustment seat 3. A handle 1203 is coaxially fixed to the end of the worm 1202 extending through the adjustment seat 3. A handle 1203 is coaxially fixed to the upper surface of the hollow worm gear 1201. The active tube 1204 and the follower tube 1101 are sleeved on the outside of the active tube 1204 and threadedly connected to the active tube 1204. The annular support plate 1102 is located above the active tube 1204. The inner wall of the bean cylinder 1 is provided with a vertical strip groove. A slider is slidably connected in the strip groove. The slider extends out of the strip groove. One end of the slider extending out of the strip groove is fixed to the outer wall of the follower tube 1101. The cooperation between the slider and the strip groove plays a guiding and limiting role in the vertical movement of the follower tube 1101.

[0032] like Figure 2 and Figure 3 and Figure 4 Power is provided by manually rotating the handle 1203. The rotation of the handle 1203 will drive the worm 1202, which is fixed coaxially with the handle 1203, to rotate. The rotation of the worm 1202 will drive the hollow worm wheel 1201, which meshes with the worm 1202, to rotate. The rotation of the hollow worm wheel 1201 will drive the drive tube 1204, which is fixed coaxially with the hollow worm wheel 1201, to rotate. The rotation of the drive tube 1204 will drive the follower tube 1101, which is threadedly connected to the drive tube 1204, to move in the vertical direction. The movement of the follower tube 1101 is limited by the bean cylinder 1.

[0033] like Figure 6 The control slot 5 is equipped with a prompting component that indicates the rotation angle of the worm gear 1202. By setting the prompting component, the number of rotations and the rotation angle of the worm gear 1202 are indicated, making it easy for the user to understand the moving distance of the annular fixed cutter head 10. The unfolding helix angle of the worm gear 1202 is less than the friction angle of the contact between the hollow worm wheel 1201 and the worm gear 1202, so as to achieve self-locking.

[0034] like Figure 6The prompting component includes several metal protrusions 13 fixed on the outer circumference of the worm gear 1202. The metal protrusions 13 are arranged in an array with the center line of the worm gear 1202 as the center. The top of the metal protrusions 13 is an inclined surface. The top of the control groove 5 has a groove. A metal spring piece 14 that cooperates with the metal protrusions 13 is engaged in the groove. When the worm gear 1202 rotates, it will drive the metal protrusions 13, which are integrated with the worm gear 1202, to rotate. The metal protrusions 13 rotate and contact the metal spring piece 14 to make a sound. The speed and number of sounds can help the user to clearly understand the moving distance of the annular fixed cutter head 10, thereby making it easier for the user to adjust the position of the annular fixed cutter head 10 more accurately. The metal spring piece has a certain degree of elasticity.

[0035] like Figure 1 and Figure 2 and Figure 3 and Figure 4 The top of the bean container 1 is threaded with a sealing cap 15 that closes the opening at the top of the bean container 1. A circular groove is provided in the middle of the sealing cap 15. The top of the drive rod passes through the circular groove and exits through the sealing cap 15. The sealing cap 15 closes the bean container 1, reducing the possibility of dust and dirt entering the inner cavity of the bean container 1 during the coffee bean grinding process.

[0036] When adjusting the grind size of coffee beans, the user grasps the handle 1203 and manually rotates it. The rotation of the handle 1203 will cause the worm gear 1202, which is coaxially fixed to the handle 1203 and rotatably connected to the adjustment seat 3, to rotate. The rotation of the worm gear 1202 will cause the hollow worm wheel 1201, which meshes with the worm gear 1202, to rotate. The rotation of the hollow worm wheel 1201 will cause the drive tube 1204, which is coaxially fixed to the hollow worm wheel 1201, to rotate. The rotation of the drive tube 1204 will cause the follower tube 1101, which is sleeved outside the drive tube 1204 and threadedly connected to the drive tube 1204, to move vertically. The movement of the follower tube 1101 will cause the annular support plate 1102 and the annular fixed cutter disc 10, which are fixed to the follower tube 1101, to move vertically, so as to adjust the distance between the annular fixed cutter disc 10 and the conical moving cutter disc 8.

[0037] Meanwhile, during the rotation of the worm gear 1202, the metal protrusion 13, which is integrated with the worm gear 1202, will rotate. The metal protrusion 13 rotates and contacts the metal spring 14, producing a sound. The speed and number of sounds can help the user clearly understand the moving distance of the annular fixed cutter head 10, thereby facilitating the user to more accurately adjust the position of the annular fixed cutter head 10. After the spacing is adjusted, the handle 1203 and the adjusting seat 3 can be fixed with screws to further realize the self-locking function.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A variable grinder disc spacing fine tuning structure for a coffee maker, characterized by, It includes a bean hopper (1) for holding coffee beans and a powder hopper (2) for holding coffee powder. An adjustment seat (3) is provided between the bean hopper (1) and the powder hopper (2). The upper surface of the adjustment seat (3) is fixed to the bottom end of the bean hopper (1), and the lower surface is fixed with an annular outer tube (4). The outer tube (4) is sleeved on the outside of the powder hopper (2) and threadedly fixed to the powder hopper (2). The adjustment seat (3) has a control groove (5) in the middle of its inner cavity. The upper surface has an upper connecting groove (6) that connects the control groove (5) and the bean cylinder (1). The lower surface has a lower connecting groove (7) that connects the control groove (5), the outer sleeve (4), and the powder cylinder (2). The inner cavity of the control groove (5) is connected to a conical moving blade disc (8) through a lower mounting component (9). The bean cylinder (1) is connected to an annular fixed blade disc (10) through an upper mounting component (11). The inner cavity of the control groove (5) is also provided with a distance adjustment component (12) that controls the movement of the annular fixed blade disc (10) to adjust the distance between the annular fixed blade disc (10) and the conical moving blade disc.

2. The coffee maker burr disc variable spacing fine tuning structure of claim 1, wherein, The upper mounting assembly (11) includes a follower tube (1101) disposed inside the bean cylinder (1) and slidably connected to the bean cylinder (1). The follower tube (1101) has a hollow inner cavity and is open at both the upper and lower ends. An annular support plate (1102) is fixed to the inner cavity wall of the follower tube (1101). The annular fixed blade disc (10) has an inverted T-shaped cross section. The annular fixed blade disc (10) overlaps the annular support plate (1102) and its bottom end penetrates the annular support plate (1102).

3. The coffee maker burr spacing variable fine tuning structure of claim 2, wherein, The lower mounting assembly (9) includes an inner sleeve (901) fixed to the bottom of the control slot (5) and closing the lower connecting slot (7). The inner sleeve (901) has a hollow inner cavity and an open top. The inner sleeve (901) is fitted around the annular fixed cutter disc (10) and is slidably connected to the annular fixed cutter disc (10). The middle position of the bottom of the inner sleeve (901) is rotatably connected to the conical moving cutter disc (8). The conical moving cutter disc (8) extends into the annular fixed cutter disc (10) and is connected to the annular fixed cutter disc (10). The conical moving cutter disc (8) is fitted with a fixed cutter disc (10). A drive shaft (902) is fixed at the middle of the top of the drive shaft (902). The top of the drive shaft (902) extends out of the inner sleeve (901), the annular fixed cutter disc (10), and the follower tube (1101). The bottom end of the inner sleeve (901) has several discharge holes (903) that connect the inner cavity of the annular fixed cutter disc (10), the inner cavity of the inner sleeve (901), the lower connecting groove (7), the inner cavity of the outer sleeve (4), and the inner cavity of the powder cylinder (2).

4. The coffee maker burr spacing variable fine tuning structure of claim 3, wherein, The adjustment assembly includes a hollow worm gear (1201) disposed in the control slot (5) and rotatably connected to the control slot (5). The hollow worm gear (1201) is sleeved outside the inner sleeve (901) and rotatably connected to the inner sleeve (901). A worm (1202) meshing with the hollow worm gear (1201) is also rotatably connected in the control slot (5). One end of the worm (1202) passes through the adjustment seat (3) and is rotatably connected to the adjustment seat (3). A handle (1203) is coaxially fixed to one end of the worm (1202) that passes through the adjustment seat (3). The hollow worm gear (1201) has a drive tube (1204) coaxially fixed on its upper surface. The follower tube (1101) is sleeved on the outside of the drive tube (1204) and threadedly connected to the drive tube (1204). The annular support plate (1102) is located above the drive tube (1204).

5. The coffee maker burr spacing variable fine tuning structure of claim 4, wherein, The control slot (5) is equipped with a prompting component that provides an indication of the rotation angle of the worm gear (1202).

6. The coffee maker burr spacing variable fine tuning structure of claim 5, wherein, The prompting component includes several metal protrusions (13) fixed on the outer circumference of the worm (1202). The metal protrusions (13) are arranged in an array with the center line of the worm (1202) as the center. The top of the metal protrusions (13) is an inclined surface. The top of the control groove (5) is provided with a groove. A metal spring (14) that cooperates with the metal protrusions (13) is engaged in the groove.

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