Grinding disc positioning mechanism and coffee machine

Abstract

The application discloses a kind of millstone positioning mechanism, including millstone adjusting ring, millstone component and millstone box body, the millstone component includes millstone support and the first millstone being arranged on millstone support, and the first millstone is screwed with millstone adjusting ring;The millstone box body is around the outer periphery of millstone adjusting ring and the accommodating cavity that can accommodate millstone support is opened on the millstone box body.Wherein, the accommodating cavity is equipped with positioning column, and the limiting lug that is matched with positioning column is equipped on the millstone support.Therefore, when user thread is screwed into the first millstone in millstone adjusting ring until the limiting lug on millstone support and the positioning column in accommodating cavity are abutted, at this time, user can judge that the first millstone has been screwed in place from sensory, to ensure that the first millstone of millstone component is in initial setting position each time assembly, to improve grinding accuracy.In addition, the application also provides coffee machine with it.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to a grinding disc positioning mechanism and a coffee machine. BACKGROUND

[0002] The market of coffee and coffee appliances is of great potential, and more and more consumers are trying to drink coffee, and the market share of coffee is increasing day by day. When drinking coffee, people prefer freshly ground coffee, and the key step in freshly ground coffee is to grind coffee beans into coffee powder with appropriate fineness.

[0003] The existing coffee machines generally adopt the mode that the inner and outer grinding discs or the upper and lower grinding discs interact with each other to grind coffee beans. After being used for a period of time, the outer grinding disc or the upper grinding disc needs to be disassembled and cleaned, and then reassembled after cleaning. At present, for the outer grinding disc or the upper grinding disc fixed to the body by screw connection, it is difficult to ensure that the grinding disc is in the initial set position (i.e. zero position) every time the grinding disc assembly is reassembled, thereby causing assembly error and reducing grinding accuracy. SUMMARY

[0004] In order to overcome the defects of the prior art, the present application provides a grinding disc positioning mechanism and a coffee machine, which can ensure that the first grinding disc is always in the initial set position every time the grinding disc assembly is reassembled, thereby improving the grinding accuracy.

[0005] The technical scheme adopted by the present application to solve the problems is:

[0006] A grinding disc positioning mechanism, comprising:

[0007] A grinding disc adjusting ring;

[0008] A grinding disc assembly comprising a grinding disc support and a first grinding disc arranged on the grinding disc support, the first grinding disc being threadedly connected with the grinding disc adjusting ring;

[0009] A grinding disc box body arranged around the outer periphery of the grinding disc adjusting ring and having a receiving cavity for accommodating the grinding disc support;

[0010] Wherein, the receiving cavity is provided with a positioning column, and the grinding disc support is provided with a limiting protrusion matched with the positioning column; when the first grinding disc is screwed into the grinding disc adjusting ring until the limiting protrusion abuts against the positioning column, the first grinding disc is screwed into place.

[0011] Further, an indicating device is further included, the indicating device comprising an indicating rod arranged on the grinding disc support and close to the limiting protrusion, when the first grinding disc is screwed into place, the positioning column abuts against the indicating rod and lifts up the indicating rod.

[0012] Further, the indicating device further comprises an indicating rod sleeve and a first elastic member, wherein:

[0013] The indicating rod sleeve is arranged on the mill disc support and covers the outside of the indicating rod, and the first elastic member is sleeved on the indicating rod and located in the indicating rod sleeve;

[0014] Under the elastic force of the first elastic member, the indicating rod can be retracted into the indicating rod sleeve; when the first mill disc is screwed into place, the positioning column drives the indicating rod to overcome the elastic force of the first elastic member and move to make the indicating rod protrude or flush with the indicating rod sleeve.

[0015] Further, a foolproof device is further included, the foolproof device comprises a foolproof rod arranged on the mill disc box body, and the mill disc adjusting ring is provided with an adjusting chuck matched with the foolproof rod; when the adjusting chuck is rotated and drives the mill disc adjusting ring to reset to the initial position, the adjusting chuck abuts against the foolproof rod and drives the foolproof rod to retract and disengage from the containing cavity.

[0016] Further, the foolproof device further comprises a mounting bracket connected to the mill disc box body, and the foolproof rod is arranged in the mounting bracket, wherein:

[0017] A second elastic member is further included, which is sleeved on the foolproof rod and located in the mounting bracket; under the elastic force of the second elastic member, the foolproof rod can be driven to protrude into the containing cavity;

[0018] When the adjusting chuck is rotated to a certain position, the adjusting chuck drives the foolproof rod to overcome the elastic force of the second elastic member and move, so that the foolproof rod retracts and disengages from the containing cavity.

[0019] Further, the adjusting chuck is provided with a positioning block, and the positioning block is provided with a positioning slot; the foolproof rod is provided with an extension rod matched with the positioning block;

[0020] When the adjusting chuck is rotated to a certain position, the positioning block abuts against the extension rod and the extension rod is clamped into the positioning slot, so that the foolproof rod retracts and disengages from the containing cavity.

[0021] Further, a mill disc locking device is further included, the mill disc locking device comprises a mill disc lock knob and a lock block, wherein:

[0022] The mill disc support comprises a mill disc pressing plate and a mill disc seat covering the mill disc pressing plate;

[0023] Part of the millstone lock knob is rotatably arranged between the millstone seat and the millstone pressing plate, and the lock block is slidably arranged on the millstone pressing plate and matched with the millstone lock knob.

[0024] The inner side wall of the accommodating cavity is provided with a first sawtooth structure, and the lock block is provided with a second sawtooth structure; when the millstone lock knob is rotated, the lock block can be driven to extend or retract radially; when the lock block extends, the second sawtooth structure on the lock block is clamped with the first sawtooth structure of the accommodating cavity to limit the axial rotation of the first millstone; when the lock block retracts, the second sawtooth structure is disengaged from the first sawtooth structure.

[0025] Further, the millstone lock knob and the lock block are matched through a groove block clamping structure, the groove block clamping structure comprises a clamping groove and an eccentric arc block clamped in the clamping groove, one of the clamping groove and the eccentric arc block is arranged on the millstone lock knob, and the other is arranged on the lock block.

[0026] When the millstone lock knob is rotated, the eccentric arc block and the clamping groove are matched to drive the lock block to extend or retract radially.

[0027] Further, an inner ring arranged on the millstone box body and located at the top of the accommodating cavity is further included, and the lock block can be matched with the inner ring to limit the axial movement of the first millstone.

[0028] In addition, the application also provides a coffee machine comprising a machine body and a millstone positioning mechanism arranged on the machine body.

[0029] In summary, the millstone positioning mechanism and the coffee machine have the following beneficial effects:

[0030] (1) The millstone positioning mechanism of the application sets a positioning column in the accommodating cavity of the millstone box body; when the user screws the first millstone into the millstone adjusting ring until the limiting protrusion on the millstone support abuts against the positioning column in the accommodating cavity, the user can judge from the sense that the first millstone is assembled in place, thereby ensuring that the first millstone of the millstone assembly is in the initial set position each time, and improving the grinding accuracy.

[0031] (2) The millstone positioning mechanism of the application sets an indicating device; when the first millstone is screwed into place, the positioning column can lift the indicating rod to remind the user from the visual angle that the first millstone is assembled in place, thereby further ensuring that the first millstone is in the initial set position.

[0032] (3) The mill disc positioning mechanism of the present application, by setting the foolproof device, when the foolproof rod extends into the accommodating cavity, at this time the mill disc assembly cannot be assembled in place, thereby reminding the user to retract the foolproof rod and disengage from the accommodating cavity; when the adjusting chuck is rotated and drives the mill disc adjusting ring to reset to the initial position, the foolproof rod retracts and disengages from the accommodating cavity, at this time the mill disc assembly can be assembled and disassembled, which is to make the starting point of the mill disc adjusting ring consistent when the first mill disc thread is screwed into the mill disc adjusting ring, and also helps to remove the resistance of the foolproof rod when disassembling the mill disc assembly.

[0033] (4) The mill disc positioning mechanism of the present application, by setting the mill disc locking device, when the first mill disc is screwed in place, the lock block is driven to extend radially by rotating the mill disc lock knob, at this time the second sawtooth structure on the lock block is engaged with the first sawtooth structure in the accommodating cavity to limit the axial rotation of the first mill disc, and the axial movement of the first mill disc is limited by the inner ring provided on the mill disc box body; when the mill disc assembly needs to be disassembled, only the lock block needs to be retracted by rotating the mill disc lock knob. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is an exploded schematic view of the mill disc positioning mechanism of the present application;

[0035] Figure 2 is Figure 1 is a structural schematic view from another perspective;

[0036] Figure 3 is a structural schematic view of the mill disc box body and the foolproof device in the mill disc positioning mechanism of the present application;

[0037] Figure 4 is an exploded schematic view of part of the structure in the mill disc positioning mechanism of the present application;

[0038] Figure 5 is an assembly schematic view of the mill disc lock knob and the lock block in the mill disc positioning mechanism of the present application;

[0039] Figure 6 is an exploded schematic view of another part of the structure in the mill disc positioning mechanism of the present application;

[0040] Figure 7 is a structural schematic view of the mill disc positioning mechanism of the present application;

[0041] Figure 8 is a cross-sectional schematic view of the mill disc positioning mechanism of the present application.

[0042] Among them, the meaning of the reference signs is as follows:

[0043] 1, fixed support; 101, accommodating cavity; 102, support column; 103, annular convex edge; 2, grinding disc adjusting ring; 201, internal thread; 3, grinding disc support; 301, grinding disc pressing plate; 3011, limiting protrusion; 3012, opening; 302, grinding disc seat; 303, handle; 4, first grinding disc; 401, flange; 402, external thread; 5, grinding disc box body; 501, accommodating cavity; 502, positioning column; 503, first sawtooth structure; 6, indicating device; 601, indicating rod; 602, indicating rod sleeve; 603, first elastic member; 7, adjusting chuck; 701, positioning block; 702, positioning groove; 8, foolproof rod; 801, extension rod; 9, mounting support; 901, upper support; 902, lower support; 10, second elastic member; 11, grinding disc lock knob; 1101, eccentric arc block; 12, lock block; 1201, clamping groove; 1202, second sawtooth structure; 13, inner ring; 14, pressing strip; 15, transmission shaft; 16, second grinding disc; 17, powder outlet support; 18, powder sweeping paddle; 19, powder outlet pipe; 20, bottom cover. DETAILED DESCRIPTION

[0044] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0045] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0047] Reference Figures 1-8The application provides a grinding disc positioning mechanism, which comprises a grinding disc adjusting ring 2 and a grinding disc assembly, wherein the grinding disc assembly comprises a grinding disc support 3 and a first grinding disc 4 arranged on the grinding disc support 3; the first grinding disc 4 is in threaded cooperation with the grinding disc adjusting ring 2; in addition, the grinding disc adjusting ring 2 is surrounded by a grinding disc box body 5, and the grinding disc box body 5 is provided with a containing cavity 501 capable of containing the grinding disc support 3; preferably, the first grinding disc 4 is an outer grinding disc, the outer side wall of the outer grinding disc is provided with an outer thread 402, the inner side wall of the grinding disc adjusting ring 2 is provided with an inner thread 201 matched with the outer thread 402, and when the outer thread 402 of the outer grinding disc is screwed into the inner thread 201 of the grinding disc adjusting ring 2, the grinding disc support 3 is partially or completely arranged in the containing cavity 501.

[0048] Preferably, the bottom of the containing cavity 501 is provided with a positioning column 502, and the bottom of the grinding disc support 3 is provided with a limiting protrusion 3011 matched with the positioning column 502; when the outer grinding disc is screwed into the grinding disc adjusting ring 2 until the side wall of the limiting protrusion 3011 abuts against the positioning column 502, the user can judge that the outer grinding disc is screwed into place from the sense, thereby ensuring that the outer grinding disc is in the initial set position (i.e. zero position) every time the outer grinding disc is assembled, and improving the grinding accuracy. In addition, the user operation is more convenient, and during the process of grinding coffee beans, part of the coffee powder will inevitably remain in the grinding disc assembly, and the remaining coffee powder will be easily deteriorated after a period of time, and the remaining coffee powder in the grinding disc assembly will affect the taste of the coffee beverage, so the user needs to clean the remaining coffee powder after using the grinding disc assembly for a period of time. Therefore, in the embodiment, the first grinding disc 4 is designed as a detachable structure, and the first grinding disc 4 can be screwed out for operation when the coffee powder needs to be cleaned. In order to ensure the grinding accuracy after the first grinding disc 4 is disassembled, cleaned and assembled again, the positioning mechanism is designed to avoid the trouble of re-adjusting the first grinding disc 4 when the user disassembles and assembles the first grinding disc 4 to clean the remaining coffee powder.

[0049] Preferably, the positioning column 502 is a positioning screw. When the first grinding disc 4 is assembled for the first time, a through hole is formed on the grinding disc support 3 after the first grinding disc 4 is screwed to a certain position, and the positioning screw is passed through the through hole and fixed to the bottom of the containing cavity 501 of the grinding disc box body 5, so as to determine the initial set position of the first grinding disc 4.

[0050] In the embodiment, the grinding disc support 3 is further provided with a handle 303 arranged rotatably, and the user can grasp the handle 303 to assemble or disassemble the grinding disc assembly, so as to facilitate the user to use.

[0051] It should be noted that in other embodiments, the first grinding disc 4 can also be an upper grinding disc, and the upper grinding disc is threadedly connected with the grinding disc adjusting ring 2. Thus, when the grinding disc adjusting ring 2 is rotated, the upper grinding disc can be directly driven to move up and down to adjust the grinding gap between the upper grinding disc and the lower grinding disc, which is not limited here.

[0052] Referring to Figures 1-2 and Figure 4 The grinding disc positioning mechanism further comprises an indicating device 6, which comprises an indicating rod 601 penetrating the grinding disc support 3 and being close to the limiting block 3011. When the outer grinding disc is screwed into place, the positioning column 502 abuts against the indicating rod 601 and can lift the indicating rod 601. Specifically, the indicating device further comprises an indicating rod sleeve 602 penetrating the grinding disc support 3 and covering the outside of the indicating rod 601, and a first elastic member 603 arranged in the indicating rod sleeve 602. Preferably, the first elastic member 603 is a spring, which is sleeved on the indicating rod 601 and one end of which abuts against the indicating rod sleeve 602, and the other end of which abuts against the step of the indicating rod 601.

[0053] Thus, under the elastic force of the first elastic member 603, the indicating rod 601 can be driven to retract into the indicating rod sleeve 602; when the outer grinding disc is screwed into place, the positioning column 502 abuts against the bottom of the indicating rod 601 and drives the indicating rod 601 to overcome the elastic force of the first elastic member 603 and move so that the top end surface of the indicating rod 601 is flush with the surface of the indicating rod sleeve 602, thereby reminding the user from the visual angle that it has been screwed into place, further ensuring that the outer grinding disc is at the initial set position.

[0054] Of course, in other embodiments, the indicating rod 601 can also protrude from the indicating rod sleeve 602 to remind the user from the visual angle that it has been screwed into place, which is not limited here.

[0055] Thus, by arranging the limiting block 3011, the positioning column 502 and the indicating device 6, when the user screws the outer grinding disc into the grinding disc adjusting ring 2, the user can feel from the senses and the visual angle whether the outer grinding disc has been screwed into place, thereby improving the accuracy of the assembly position of the outer grinding disc and the user's experience, and ensuring that the outer grinding disc is at the initial set position after being reassembled. In addition, by using the positioning column 502 in cooperation with the indicating device 6 and the limiting block 3011, the positioning column 502 can realize positioning indication in two dimensions of senses and visual angle, which can reduce the assembly parts of the positioning mechanism and improve the assembly efficiency and production cost.

[0056] Referring to Figures 1-3The anti-fumble device comprises a mounting bracket 9 connected to the mill disc box body 5, an anti-fumble rod 8 arranged in the mounting bracket 9 and partially penetrating the mill disc box body 5, and a second elastic member 10 sleeved on the anti-fumble rod 8 and located in the mounting bracket 9. Thus, the anti-fumble rod 8 is driven to extend into the accommodating cavity 501 under the elastic force of the second elastic member 10. In addition, the mill disc adjusting ring 2 is provided with an adjusting chuck 7 matched with the anti-fumble rod 8. When the adjusting chuck 7 is rotated and drives the mill disc adjusting ring 2 to reset to the initial position, the adjusting chuck 7 abuts against the anti-fumble rod 8 and drives the anti-fumble rod 8 to overcome the elastic force of the second elastic member 10 and move to retract and disengage from the accommodating cavity 501.

[0057] In the embodiment, the adjusting chuck 7 and the mill disc adjusting ring 2 are fixed by bolt connection. When the adjusting chuck 7 is rotated, the mill disc adjusting ring 2 is synchronously rotated.

[0058] Specifically, the adjusting chuck 7 is provided with a positioning block 701, the positioning block 701 is provided with a positioning groove 702, and the anti-fumble rod 8 is provided with an extension rod 801 matched with the positioning groove 702 and in a bent shape. When the adjusting chuck 7 is rotated to a certain position, the positioning block 701 on the adjusting chuck 7 abuts against the extension rod 801 and the extension rod 801 is clamped into the positioning groove 702, at which time the anti-fumble rod 8 retracts and disengages from the accommodating cavity 501.

[0059] The mounting bracket 9 comprises an upper bracket 901 connected to the mill disc box body 5 and a lower bracket 902 covered on the upper bracket 901, the upper bracket 901 and the lower bracket 902 enclose a mounting cavity, the anti-fumble rod 8 is arranged in the mounting cavity, and the extension rod 801 penetrates through the lower bracket 902. In addition, preferably, the second elastic member 10 is a spring, the spring is sleeved on the anti-fumble rod 8, one end of the spring abuts against the mounting bracket 9, and the other end of the spring abuts against the anti-fumble rod 8.

[0060] Thus, by arranging the anti-fumble device, when the adjusting chuck 7 is rotated to a certain position, at which time the mill disc adjusting ring 2 resets to the initial position, the anti-fumble rod 8 retracts and disengages from the accommodating cavity 501, so that the mill disc assembly can be assembled and disassembled, thereby ensuring that the starting point of the mill disc adjusting ring 2 is always consistent when the outer mill disc thread is screwed into the mill disc adjusting ring 2, and facilitating the removal of the resistance of the anti-fumble rod 8 when the mill disc assembly is disassembled.

[0061] Referring to Figures 1-5 The mill disc positioning mechanism further comprises a mill disc locking device, the mill disc locking device comprises a mill disc lock knob 11 and a lock block 12, the mill disc support 3 comprises a mill disc pressing plate 301 and a mill disc seat 302 covered on the mill disc pressing plate 301, part of the mill disc lock knob 11 is rotationally arranged between the mill disc seat 302 and the mill disc pressing plate 301, and the lock block 12 is slidingly arranged on the mill disc pressing plate 301 and matched with the mill disc lock knob 11.

[0062] The side wall of the accommodating cavity 501 is provided with a first sawtooth structure 503, and the outer side wall of the lock block 12 is provided with a second sawtoeth structure 1202. When the millstone lock knob 11 is rotated, the lock block 12 can be extended or retracted, and when the lock block 12 is extended, the second sawtoeth structure 1202 on the lock block 12 is clamped with the first sawtoeth structure 503 in the accommodating cavity 501 to limit the axial rotation of the outer millstone; when the lock block 12 is retracted, the second sawtoeth structure 1202 is disengaged from the first sawtoeth structure 503, thereby achieving unlocking of the outer millstone.

[0063] Specifically, the millstone lock knob 11 and the lock block 12 are transmission matched through a groove block clamping structure, the groove block clamping structure includes a clamping groove 1201 arranged on the lock block 12 and an eccentric arc block 1101 arranged on the millstone lock knob 11, the clamping groove 1201 is in the shape of a sandglass (i.e. the width of the middle is relatively narrow and the width of both sides is relatively large) to facilitate the clamping of the eccentric arc block 1101 into the clamping groove 1201, and the eccentric arc block 1101 is clamped at the position with the narrowest width in the middle of the clamping groove 1201. Thus, when the millstone lock knob 11 is rotated, it can drive the eccentric arc block 1101 to rotate and in turn drive the lock block 12 to extend or retract in the radial direction.

[0064] It should be noted that the eccentricity of the eccentric arc block 1101 refers to the arrangement of the center of the circle where the eccentric arc block 1101 is located deviating from the center of the circle where the millstone lock knob 11 is located (as shown in Figure 5 .

[0065] Of course, in other embodiments, the arrangement positions of the clamping groove 1201 and the eccentric arc block 1101 can be interchanged, which can also achieve the same technical effect, and are not limited here.

[0066] Preferably, the lock block 12 is arranged in multiple and is arranged on the millstone pressing plate 301 in the circumferential direction, and the first sawtoeth structure 503 is annularly arranged on the side wall of the accommodating cavity 501. Thus, when the millstone lock knob 11 is twisted, multiple lock blocks 12 can be simultaneously extended and clamped with the first sawtoeth structure 503 in the accommodating cavity 501, thereby improving the locking stability.

[0067] In addition, an inner ring 13 clamped on the millstone box body 5 and located at the top of the accommodating cavity 501 is further included, and the lock block 12 can abut against the bottom of the inner ring 13 to limit the axial movement of the outer millstone.

[0068] Thus, when the millstone adjusting ring 2 is adjusted and the outer millstone is moved in the axial direction, the millstone support 3 can be simultaneously moved upward, and when the lock block 12 on the millstone support 3 abuts against the bottom of the inner ring 13, the outer millstone cannot continue to move at this time, thereby limiting the axial movement stroke of the outer millstone.

[0069] Thus, the outer grinding disc assembling process of the present application is as follows:

[0070] (I) Firstly, rotate the adjusting chuck 7 and bring the grinding disc adjusting ring 2 back to the initial position, at this time the foolproof rod 8 is completely retracted and separated from the containing cavity 501, at this time the outer grinding disc in the grinding disc assembly can be screwed into the grinding disc adjusting ring 2;

[0071] (II) When the outer grinding disc is screwed into place, at this time the limiting protrusion 3011 on the grinding disc support 3 abuts against the positioning column 502 in the containing cavity 501, and at the same time the positioning column 502 lifts the indicating rod 601;

[0072] (III) Then rotate the grinding disc lock knob 11 to drive the lock block 12 to extend and be clamped with the first sawtooth structure 503 in the containing cavity 501, at this time the direction of the axial rotation of the outer grinding disc can be locked, and thus the assembly of the outer grinding disc is completed.

[0073] Similarly, when the outer grinding disc needs to be disassembled, firstly rotate the grinding disc lock knob 11 to drive the lock block 12 to retract, and then rotate the adjusting chuck 7 until the foolproof rod 8 is completely retracted and separated from the containing cavity 501, at this time the grinding disc assembly can be screwed out as a whole.

[0074] In addition, the grinding disc positioning mechanism of the present application further comprises the following structure:

[0075] Referring to Figure 4 The middle part of the grinding disc pressing plate 301 is provided with an opening 3012, the top of the outer grinding disc is provided with a flange 401, and the outer grinding disc is hung on the opening 3012 through the flange 401. When the grinding disc seat 302 is covered on the grinding disc pressing plate 301 and fixed, the grinding disc seat 302 presses the top wall of the flange 401 on the outer grinding disc to realize the connection and fixation with the outer grinding disc.

[0076] Referring to Figures 6-8 Further comprising a fixed support, the grinding disc box body 5 is fixed on the fixed support 1. The fixed support 1 is further provided with a containing cavity 101 with a top opening, the side wall of the containing cavity 101 is provided with a plurality of support columns 102 to form a stepped surface, the grinding disc adjusting ring 2 is placed on the stepped surface, and the outer side wall of the grinding disc adjusting ring 2 is fitted with the inner side wall of the containing cavity 101 to limit the radial movement of the grinding disc adjusting ring 2. In addition, the fixed support 1 is further provided with a pressing strip 14, which is fitted with the top wall of the grinding disc adjusting ring 2 to limit the axial movement of the grinding disc adjusting ring 2.

[0077] In the embodiment, the pressing strip 14 is provided with two and is respectively located on the top of the fixed support 1 on both sides.

[0078] Further, the bottom of the accommodating cavity 101 is provided with a through hole and a ring-shaped protrusion 103 arranged around the through hole; in addition, a transmission shaft 15 and a second grinding disc 16 sleeved on the transmission shaft 15 are further included, and the transmission shaft 15 is rotatably arranged on the ring-shaped protrusion 103 through a bearing. Preferably, the second grinding disc 16 is an inner grinding disc.

[0079] The inner side wall of the outer grinding disc forms a first grinding surface, the outer side wall of the inner grinding disc forms a second grinding surface, and a grinding gap is formed between the first grinding surface and the second grinding surface; when the adjusting chuck 7 is rotated to drive the grinding disc adjusting ring 2 to rotate, the outer grinding disc can be driven to move up and down relative to the inner grinding disc to adjust the grinding gap between the outer grinding disc and the inner grinding disc, so that coffee powder with different finenesses can be ground. Meanwhile, the fixed support 1 can be used to realize the assembly and positioning of the first grinding disc 4 and the second grinding disc 16, so as to ensure the coaxiality of the assembly of the two grinding discs and improve the grinding accuracy.

[0080] Of course, in other embodiments, if the first grinding disc 4 is an upper grinding disc, the second grinding disc 16 is a lower grinding disc matched with the upper grinding disc, which is not limited here.

[0081] Further, the bottom of the accommodating cavity 101 is provided with a through hole and a ring-shaped protrusion 103 arranged around the through hole; in addition, a transmission shaft 15 and a second grinding disc 16 sleeved on the transmission shaft 15 are further included, and the transmission shaft 15 is rotatably arranged on the ring-shaped protrusion 103 through a bearing. Preferably, the second grinding disc 16 is an inner grinding disc.

[0082] Therefore, when the transmission shaft 15 is driven to rotate, the inner grinding disc and the sweeping paddle 18 can be driven to rotate at the same time, the coffee beans can be ground through the rotation of the inner grinding disc, the ground coffee powder can fall into the powder storage cavity, and the powder in the powder storage cavity can be pushed to the powder outlet through the rotation of the sweeping paddle 18 and finally fall through the powder outlet pipe.

[0083] In the embodiment, the bottom of the fixed support 1 is further provided with a bottom cover 20.

[0084] In addition, the present application further provides a coffee machine including a machine body (not shown in the figure) and a grinding disc positioning mechanism arranged on the machine body.

[0085] In summary, the grinding disc positioning mechanism and the coffee machine with the same have the following advantages:

[0086] Advantages:

[0087] (I) The mill disc positioning mechanism of the present application, by setting the positioning column 502 in the accommodating cavity 501 of the mill disc box body 5, when the user screws the first mill disc 4 into the mill disc adjusting ring 2 until the limiting protrusion 3011 on the mill disc support 3 abuts against the positioning column 502 in the accommodating cavity 501, at this time the user can judge from the senses that the first mill disc 4 has been screwed into place, thereby ensuring that the first mill disc 4 is in the initial set position (i.e. zero position) each time the mill disc assembly is assembled, thereby improving the grinding accuracy.

[0088] (II) The mill disc positioning mechanism of the present application, by setting the indicating device 6, when the first mill disc 4 is screwed into place, the positioning column 502 can lift the indicating rod 601 to remind the user visually that it has been assembled in place, further ensuring that the first mill disc 4 is in the initial set position.

[0089] (III) The mill disc positioning mechanism of the present application, by setting the foolproof device, when the foolproof rod 8 extends into the accommodating cavity 501, at this time the mill disc assembly cannot be assembled in place, thereby reminding the user to retract the foolproof rod 8 and remove it from the accommodating cavity 501; when the adjusting chuck 7 is rotated and the mill disc adjusting ring 2 is reset to the initial position, the foolproof rod 8 is retracted and removed from the accommodating cavity 501, at this time the mill disc assembly can be assembled and disassembled, its role is that when the first mill disc 4 is screwed into the mill disc adjusting ring 2, the starting point of the mill disc adjusting ring 2 always remains consistent, and it is also beneficial to remove the resistance of the foolproof rod 8 when disassembling the mill disc assembly.

[0090] (IV) The mill disc positioning mechanism of the present application, by setting the mill disc locking device, when the first mill disc 4 is screwed into place, the locking block 12 is extended by rotating the mill disc lock knob 11, at this time the second sawtooth structure 1202 on the locking block 12 is engaged with the first sawtooth structure 503 in the accommodating cavity 501 to limit the axial rotation of the first mill disc 4, the axial movement of the first mill disc 4 is limited by the inner ring 13 provided on the mill disc box body 5; when the mill disc assembly needs to be disassembled, only the locking block 12 can be retracted by rotating the mill disc lock knob 11.

[0091] The technical means disclosed in the present application scheme is not limited to the technical means disclosed in the above embodiments, but also includes the technical solutions composed of any combination of the above technical features. It should be noted that for ordinary technical personnel in the technical field, without departing from the principle of the present application, some improvements and refinements can also be made, which are also considered within the protection scope of the present application.

Claims

1. A millstone positioning mechanism, characterized by, The grinding disc adjusting ring is provided with a plurality of screw holes. The grinding disc assembly comprises a grinding disc support and a first grinding disc arranged on the grinding disc support. The grinding disc body is arranged around the outer periphery of the grinding disc adjusting ring. The grinding disc body is provided with a receiving cavity for accommodating the grinding disc support. The receiving cavity is provided with a positioning column.

2. The mill disc positioning mechanism according to claim 1, characterized in that The grinding disc support is provided with a limiting protrusion matched with the positioning column.

3. The mill disc positioning mechanism according to claim 2, characterized in that When the first grinding disc is screwed into the grinding disc adjusting ring until the limiting protrusion abuts against the positioning column, the first grinding disc is screwed into position. The indicating device comprises an indicating rod arranged on the grinding disc support and close to the limiting protrusion. When the first grinding disc is screwed into position, the positioning column abuts against the indicating rod and lifts up the indicating rod.

4. The mill disc positioning mechanism according to any one of claims 1-3, characterized in that, The indicating device further comprises an indicating rod sleeve and a first elastic member.

5. The mill disc positioning mechanism according to claim 4, characterized in that The indicating rod sleeve is arranged on the grinding disc support and covers the outside of the indicating rod. The first elastic member is arranged on the indicating rod and in the indicating rod sleeve. Under the elastic force of the first elastic member, the indicating rod is retracted into the indicating rod sleeve.

6. The mill disc positioning mechanism according to claim 5, characterized in that When the first grinding disc is screwed into position, the positioning column drives the indicating rod to overcome the elastic force of the first elastic member and move to make the indicating rod protrude or flush with the indicating rod sleeve. The fool-proof device comprises a fool-proof rod arranged on the grinding disc body.

7. The platen positioning mechanism of any one of claims 1-3, wherein, The grinding disc adjusting ring is provided with an adjusting chuck matched with the fool-proof rod. When the adjusting chuck is rotated and drives the grinding disc adjusting ring to reset to the initial position, the adjusting chuck abuts against the fool-proof rod and drives the fool-proof rod to retract and disengage from the receiving cavity. The fool-proof device further comprises a mounting bracket connected with the grinding disc body. The fool-proof rod is arranged in the mounting bracket. The second elastic member is arranged on the fool-proof rod and in the mounting bracket. Under the elastic force of the second elastic member, the fool-proof rod is driven to protrude into the receiving cavity. When the adjusting chuck is rotated to a certain position, the adjusting chuck drives the fool-proof rod to overcome the elastic force of the second elastic member and move, so that the fool-proof rod retracts and disengages from the receiving cavity. The adjusting chuck is provided with a positioning block. The positioning block is provided with a positioning slot. The fool-proof rod is provided with an extension rod matched with the positioning block. When the adjusting chuck is rotated to a certain position, the positioning block abuts against the extension rod and the extension rod is clamped into the positioning slot, so that the fool-proof rod retracts and disengages from the receiving cavity. The grinding disc locking device comprises a grinding disc lock knob and a lock block. The grinding disc support comprises a grinding disc pressing plate and a grinding disc seat covering the grinding disc pressing plate. Part of the grinding disc lock knob is arranged between the grinding disc seat and the grinding disc pressing plate. The lock block is slidingly arranged on the grinding disc pressing plate and matched with the grinding disc lock knob. The inner side wall of the accommodating cavity is provided with a first sawtooth structure, and the lock block is provided with a second sawtooth structure. When the millstone lock knob is rotated, the lock block can be driven to extend or retract radially. When the lock block extends, the second sawtooth structure on the lock block is clamped with the first sawtooth structure of the accommodating cavity to limit the axial rotation of the first millstone. When the lock block retracts, the second sawtooth structure is disengaged from the first sawtooth structure.

8. The mill disc positioning mechanism according to claim 7, characterized in that The millstone lock knob and the lock block are matched through a groove block clamping structure. The groove block clamping structure includes a clamping groove and an eccentric arc block clamped in the clamping groove. One of the clamping groove and the eccentric arc block is arranged on the millstone lock knob, and the other is arranged on the lock block. When the millstone lock knob is rotated, the eccentric arc block and the clamping groove can be matched to drive the lock block to extend or retract radially.

9. The mill disc positioning mechanism according to claim 7, characterized in that An inner ring arranged on the millstone box body and located at the top of the accommodating cavity is further included. The lock block can be in abutting cooperation with the inner ring to limit the axial movement of the first millstone.

10. A coffee maker characterized in that, A millstone positioning mechanism as claimed in any one of claims 1-9 is arranged on the machine body.

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