Grinding two-stage adjusting structure and coffee bean grinding machine

Abstract

The utility model provides a grinding two-stage adjusting structure and a coffee bean grinder, the structure comprises a grinding assembly, a rotating assembly, a coarse adjusting assembly and a fine adjusting assembly, the coarse adjusting assembly comprises a coarse adjusting rotating ring and a coarse adjusting feedback column, a plurality of coarse adjusting feedback grooves are formed in the inner wall of the coarse adjusting rotating ring in a surrounding mode, and the end of the coarse adjusting feedback column abuts against any coarse adjusting feedback groove; the fine adjustment assembly comprises a fine adjustment gasket, a fine adjustment knob and a fine adjustment feedback column, the fine adjustment knob is rotationally connected with the rotating shaft of the rotating assembly, a plurality of fine adjustment feedback grooves are formed in the fine adjustment gasket, and the end of the fine adjustment feedback column abuts against any fine adjustment feedback groove. When the rough adjustment rotary ring is rotated, the rough adjustment feedback column abuts against any rough adjustment feedback groove, when the fine adjustment rotary knob is rotated after preliminary adjustment is completed, the fine adjustment feedback column abuts against any fine adjustment feedback groove so that the fine adjustment feedback effect can be achieved, one scale is finely adjusted every time feedback is conducted, and therefore the current grinding fineness can be accurately confirmed according to the adjustment feedback frequency, and the grinding precision is improved. Therefore, the taste and quality of coffee are ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of coffee bean grinders, in particular to a grinding two-stage adjusting structure and a coffee bean grinder. BACKGROUND

[0002] Coffee bean grinders are used to grind coffee beans into powder, and the grinding fineness of coffee powder is generally adjusted by adjusting the gap between the inner knife and the outer knife. On the market, some coffee bean grinders have only one adjusting structure, and this adjusting structure can only roughly adjust the gap between the inner knife and the outer knife, so that the grinding fineness of coffee powder can only be roughly adjusted. After rough adjustment, the grinding fineness of coffee beans cannot be finely adjusted. For users who have high requirements on grinding fineness (such as hand-pour coffee or espresso coffee enthusiasts), this rough adjustment method cannot achieve the ideal grinding effect, which not only affects the taste and quality of coffee, but also reduces the user's experience and satisfaction.

[0003] Therefore, the existing patent CN212234192U discloses a grinding two-stage adjusting structure of a coffee bean grinder, wherein the grinding two-stage adjusting structure of the coffee bean grinder moves the male knife disc and the positioning disc together on the mounting shaft through the adjusting knob to achieve primary adjustment, at this time the positions of the sliding shaft core and the adjusting nut remain unchanged; by screwing the adjusting nut, the male knife disc, the positioning disc, and the adjusting knob and the sliding shaft core integrally connected by threads move together in the direction of the adjusting nut under the elastic force of the adjusting spring to achieve fine adjustment of the secondary adjustment, thereby achieving the effects of coarse adjustment and fine adjustment.

[0004] However, when fine-tuning the gap between the male knife disc and the female knife disc, the screw rotation method is usually used for adjustment. When rotating, there is no feedback and limiting effect. Even if the coarse adjustment is followed by fine adjustment, the specific grinding fineness cannot be confirmed according to the number of feedbacks. For users with high requirements, this experience is also unacceptable. Content of the utility model

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art, and to provide a grinding two-stage adjusting structure and a coffee bean grinder that can provide feedback adjustment effect during coarse adjustment and fine adjustment, and can confirm the grinding fineness through the number of feedbacks.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] The application discloses a grinding two-stage adjusting structure, which comprises a grinding assembly, a rotating assembly, a coarse adjusting assembly and a fine adjusting assembly. The grinding assembly comprises a shell, an inner cutter and an outer cutter. The outer cutter is arranged on the inner wall of the shell. The shell is internally provided with a fixing member. The fixing member is provided with an installation channel. Part of the structure of the rotating assembly is arranged in the installation channel. The inner cutter is sleeved on the rotating shaft of the rotating assembly. The coarse adjusting assembly comprises a coarse adjusting rotating ring and a coarse adjusting feedback column. The coarse adjusting rotating ring is connected with the part of the structure of the rotating assembly which is located outside the installation channel. The coarse adjusting rotating ring is screw-connected with the shell. The inner wall of the coarse adjusting rotating ring is provided with a plurality of coarse adjusting feedback grooves. Each coarse adjusting feedback groove is used for corresponding to a coarse adjusting scale. The shell is provided with a coarse adjusting through hole. The coarse adjusting feedback column is located in the coarse adjusting through hole and abuts against the shell. The end of the coarse adjusting feedback column abuts against any coarse adjusting feedback groove. The fine adjusting assembly comprises a fine adjusting gasket, a fine adjusting knob and a fine adjusting feedback column. The fine adjusting knob is rotationally connected with the rotating shaft of the rotating assembly. The fine adjusting gasket is connected with the inner cutter and abuts against the fine adjusting knob. The fine adjusting gasket has an annular area which is distributed with the rotating assembly as the center. The fine adjusting gasket is provided with a plurality of fine adjusting feedback grooves. Each fine adjusting feedback groove is used for corresponding to a fine adjusting scale. The plurality of fine adjusting feedback grooves are located in the annular area. The fine adjusting knob is provided with a fine adjusting accommodating groove. The fine adjusting feedback column is located in the fine adjusting accommodating groove. The end of the fine adjusting feedback column abuts against any fine adjusting feedback groove.

[0008] In one of the embodiments, the rotating assembly comprises a rotating shaft rod, an adjusting spring, a connecting ring and a rotating handle. The rotating shaft rod is connected with the rotating handle. The rotating shaft rod is arranged in the installation channel. The two ends of the adjusting spring respectively abut against the fixing member and the inner cutter. The adjusting spring is arranged on the outer wall of the rotating shaft rod. The fine adjusting gasket and the inner cutter are both sleeved on the rotating shaft rod. The fine adjusting knob is rotationally connected with the screwing end of the rotating shaft rod. The connecting ring is fixedly connected with the rotating shaft rod. The coarse adjusting rotating ring is connected with the connecting ring.

[0009] In one of the embodiments, the connecting ring comprises a connecting ring main body and a connecting gasket. The coarse adjusting rotating ring is rotationally connected with the connecting ring main body. The connecting ring main body is provided with a connecting hole. The connecting gasket is located in the connecting hole and abuts against the connecting ring main body. The connecting gasket is in interference fit and abuts against the rotating shaft rod.

[0010] In one of the embodiments, the connecting ring main body is provided with an outer convex ring. The inner wall of the coarse adjusting rotating ring is further provided with an empty ring groove. The outer convex ring is located in the empty ring groove.

[0011] In one of the embodiments, the rotating assembly further comprises a rotating handle, and the rotating handle is connected with the rotating lever.

[0012] In one of the embodiments, the rotating handle comprises a handle part and a fixing part, the fixing part is arranged around the rotating lever, and the handle part is provided with a rotating groove, and the fixing part is located in the rotating groove so as to rotate the handle part and the fixing part.

[0013] In one of the embodiments, the fine adjustment washer is provided with a connecting protrusion, and the inner cutter is provided with a connecting groove, and the connecting protrusion is located in the connecting groove.

[0014] In one of the embodiments, the two-stage grinding adjustment structure further comprises a mounting ring and a screwing piece, the mounting ring is provided with a first screw hole, the shell is provided with a second screw hole, the screwing piece is respectively arranged in the first screw hole and the second screw hole so as to connect the mounting ring and the shell, and the inner wall of the shell is provided with a mounting step, and the inner cutter is respectively abutted against the mounting step and the mounting ring.

[0015] In one of the embodiments, the coarse adjustment through hole comprises an abutting through hole and a containing through hole which are connected, and the coarse adjustment feedback column comprises a coarse adjustment abutting part, a coarse adjustment transition part and a coarse adjustment mounting part which are sequentially connected, the coarse adjustment abutting part is located in one of the coarse adjustment feedback grooves, the coarse adjustment transition part is located in the abutting through hole, one side of the coarse adjustment transition part is abutted against the bottom surface of the abutting through hole, and the coarse adjustment mounting part is located in the containing through hole.

[0016] A coffee bean grinder comprises a lower powder cup and the two-stage grinding adjustment structure according to any one of the embodiments, and the lower powder cup is detachably mounted on the two-stage grinding adjustment structure.

[0017] Compared with the prior art, the present disclosure has at least the following advantages:

[0018] The two-stage grinding adjustment structure has the following advantages: when the coarse adjustment rotating ring is rotated, the coarse adjustment feedback grooves are moved, so that the coarse adjustment feedback column is abutted against any one of the coarse adjustment feedback grooves to achieve coarse adjustment feedback effect, and each feedback represents one scale; when the fine adjustment knob is rotated after the preliminary adjustment is completed, the fine adjustment feedback column is rotated, so that the fine adjustment feedback column is abutted against any one of the fine adjustment feedback grooves to achieve fine adjustment feedback effect, and each feedback represents one scale; thus, when the coarse adjustment assembly and the fine adjustment assembly adopt adjustment feedback, the current grinding fineness can be accurately confirmed according to the number of adjustment feedbacks, so as to ensure the taste and quality of the ground coffee and further ensure the user experience of the coffee bean grinder. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present disclosure, and therefore should not be considered as limiting the scope, and for those of ordinary skill in the art, other related drawings can also be obtained without creative labor under the premise of these drawings.

[0020] Figure 1 Structure diagram of the grinding two-stage regulation structure in an embodiment;

[0021] Figure 2 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 1 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0022] Figure 3 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 1 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0023] Figure 4 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 3 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0024] Figure 5 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 4 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0025] Figure 6 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 3 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0026] Figure 7 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 1 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0027] Figure 8 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 7 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0028] Figure 9 Structure diagram of the grinding two-stage regulation structure in another embodiment; Figure 7 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0029] Figure 10 Structure diagram of the grinding two-stage regulation structure in another embodiment;

[0030] 10, grinding two-stage adjusting structure; 100, grinding assembly; 110, shell; 110a, second threaded hole; 1101, coarse adjusting through hole; 1101a, abutting through hole; 1101b, accommodating through hole; 111, fixing piece; 111a, mounting channel; 112, coarse adjusting pointer; 120, inner cutter; 120b, connecting accommodating groove; 130, outer cutter; 200, rotating assembly; 210, rotating shaft rod; 220, adjusting spring; 230, connecting ring; 231, connecting ring body; 231a, connecting hole; 2311, outer convex ring; 232, connecting washer; 240, rotating rocker; 250, rotating handle; 251, handle part; 251a, rotating groove; 252, fixed part; 300, coarse adjusting assembly; 310, coarse adjusting rotating ring; 311, coarse adjusting feedback groove; 312, empty ring groove; 320, coarse adjusting feedback column; 321, coarse adjusting abutting part; 322, coarse adjusting transition part; 323, coarse adjusting mounting part; 400, fine adjusting assembly; 410, fine adjusting washer; 410a, fine adjusting feedback groove; 411, connecting convex column; 420, fine adjusting knob; 420a, fine adjusting accommodating groove; 430, fine adjusting feedback column; 500, mounting ring; 501, first threaded hole; 600, screwing piece; 11, lower powder cup. DETAILED DESCRIPTION

[0031] For the purpose of the present disclosure, the following detailed description will be made with reference to the accompanying drawings. In the drawings, the preferred embodiments of the present disclosure are shown. However, the present disclosure can be implemented in many different forms, and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0032] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0033] 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 this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0034] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below in conjunction with specific embodiments:

[0035] Please refer to Figures 1 to 8 , which is a two-stage grinding adjustment structure 10 of an embodiment of the utility model, including grinding assembly 100, rotating assembly 200, coarse adjustment assembly 300 and fine adjustment assembly 400, grinding assembly 100 includes shell 110, inner cutter 120 and outer cutter 130, outer cutter 130 is installed in the inner wall of shell 110, the inside of shell 110 is equipped with fixing piece 111, fixing piece 111 is opened with installation passage 111a, the partial structure of rotating assembly 200 is arranged in installation passage 111a, inner cutter 120 is sleeved on the rotating shaft of rotating assembly 200, wherein, coarse adjustment assembly 300 includes coarse adjustment ring 310 and coarse adjustment feedback column 320, coarse adjustment ring 310 is connected with the partial structure of rotating assembly 200 outside installation passage 111a, and coarse adjustment ring 310 is screw connected with shell 110, the inner wall of coarse adjustment ring 310 is surrounded with multiple coarse adjustment feedback grooves 311, and each coarse adjustment feedback groove 311 is used to correspond with a coarse adjustment scale, shell 110 is opened with coarse adjustment via hole 1101, coarse adjustment feedback column 320 is located in coarse adjustment via hole 1101 and is abutted to shell 110, and the end of coarse adjustment feedback column 320 is abutted to any coarse adjustment feedback groove 311, so as to preliminarily adjust grinding fineness by rotating coarse adjustment ring 310, and every rotation corresponds to one coarse adjustment feedback groove 311, indicating that one coarse adjustment scale is adjusted by rotation;Fine adjustment assembly 400 includes fine adjustment washer 410, fine adjustment knob 420 and fine adjustment feedback column 430, fine adjustment knob 420 is rotationally connected with the rotating shaft of rotating assembly 200, specifically, fine adjustment knob 420 is screw connected with the rotating shaft of rotating assembly 200, fine adjustment washer 410 is connected with inner cutter 120, specifically fixedly connected, and fine adjustment washer 410 is abutted with fine adjustment knob 420, fine adjustment washer 410 is also sleeved on the rotating shaft of rotating assembly 200, fine adjustment washer 410 has annular area, and the annular area is distributed with rotating assembly 200 as the center, fine adjustment washer 410 is opened with multiple fine adjustment feedback grooves 410a, and each fine adjustment feedback groove 410a is used to correspond with a fine adjustment scale, multiple fine adjustment feedback grooves 410a are located in the annular area, fine adjustment knob 420 is opened with fine adjustment accommodating groove 420a, fine adjustment feedback column 430 is located in fine adjustment accommodating groove 420a, and the end of fine adjustment feedback column 430 is abutted to any fine adjustment feedback groove 410a, so as to further adjust grinding fineness by rotating fine adjustment knob 420, and every rotation corresponds to one fine adjustment feedback groove 410a, indicating that one grinding fineness is adjusted by rotation.

[0036] In the embodiment, when the coarse adjustment rotating ring 310 is rotated, the coarse adjustment feedback grooves 311 follow the movement, so that the coarse adjustment feedback column 320 abuts against any one of the coarse adjustment feedback grooves 311 to achieve the coarse adjustment feedback effect, and each feedback represents a coarse adjustment scale. After the preliminary adjustment is completed, when the fine adjustment knob 420 is rotated, the fine adjustment feedback column 430 follows the rotation and abuts against any one of the fine adjustment feedback grooves 410a to achieve the fine adjustment feedback effect, and each feedback represents a fine adjustment scale. In this way, when the coarse adjustment assembly 300 and the fine adjustment assembly 400 adopt adjustment feedback, the current grinding fineness can be accurately determined according to the number of adjustment feedbacks, so as to ensure the taste and quality of the ground coffee and further ensure the user experience of the coffee bean grinder. In addition, the fine adjustment assembly 400 adopts the knob adjustment mode, so that the overall structure of the assembly occupies a smaller space.

[0037] It can be understood that, since each coarse adjustment feedback groove 311 is used to correspond to each coarse adjustment scale, and each fine adjustment feedback groove 410a is used to correspond to each fine adjustment scale, when coarse adjustment is performed, clockwise or counterclockwise rotation will achieve the coarse adjustment feedback effect, and each feedback represents an adjustment scale. Specifically, when rotated in the direction of adjusting to a finer grinding fineness, each feedback represents a decrease of one scale of the grinding fineness, for example, a decrease of 0.1 mm of the grinding fineness, that is, a decrease of 0.1 mm of the particle diameter of the coffee powder. Conversely, when rotated in the direction of adjusting to a coarser grinding fineness, each feedback represents an increase of one scale of the grinding fineness. When fine adjustment is performed, clockwise or counterclockwise rotation will achieve the fine adjustment feedback effect, and each feedback represents an adjustment scale. Specifically, when rotated in the direction of adjusting to a finer grinding fineness, each feedback represents a decrease of one scale of the grinding fineness, for example, a decrease of 0.075 mm of the grinding fineness (not shown in the figure), that is, a decrease of 0.075 mm of the particle diameter of the coffee powder. Conversely, when rotated in the direction of adjusting to a coarser grinding fineness, each feedback represents an increase of one scale of the grinding fineness. In this way, whether the grinding fineness is adjusted through coarse adjustment or fine adjustment, the specific grinding fineness value can be determined through the number of rotation feedbacks, so as to ensure the grinding effect when different types of coffee beans select corresponding grinding fineness. Specifically, when the coffee bean grinding fineness is coarsely adjusted, the rotation of the coarse adjustment rotating ring 310 drives the entire rotating assembly 200 to move up and down, and further drives the inner knife 120 to move up and down, so as to preliminarily adjust the distance between the inner knife 120 and the outer knife 130. When the coffee bean grinding fineness is finely adjusted, the rotation of the fine adjustment knob 420 drives the fine adjustment gasket 410 to move up and down, and further drives the inner knife 120 to slide up and down on the rotating shaft of the rotating assembly 200, so as to finely adjust the distance between the inner knife 120 and the outer knife 130.

[0038] In another embodiment, the rotation angle between any two adjacent coarse adjustment feedback grooves is greater than the rotation angle between any two adjacent fine adjustment feedback grooves. In this way, the rotation angle when one feedback is caused by coarse adjustment is greater than the rotation angle when one feedback is caused by fine adjustment.

[0039] Further, as shown in Figure 1 , the housing 110 is provided with a coarse adjustment pointer 112, which is used to point to a specific scale value in the coarse adjustment knob 310.

[0040] Further, the fine adjustment washer 410 is also sleeved on the rotating shaft of the rotating assembly 200.

[0041] As shown in Figure 1 , Figure 3 , Figure 7 and Figure 8 , in one embodiment, the rotating assembly 200 includes a rotating shaft rod 210, an adjusting spring 220, a connecting ring 230, and a rotating lever 240, the rotating shaft rod 210 is connected with the rotating lever 240, and the rotating shaft rod 210 is sleeved in the mounting channel 111a, the two ends of the adjusting spring 220 are respectively abutted against the fixed part 111 and the inner cutter 120, and the adjusting spring 220 is arranged around the outer wall of the rotating shaft rod 210, the fine adjustment washer 410 and the inner cutter 120 are sleeved on the rotating shaft rod 210, the fine adjustment knob 420 is rotationally connected with the screwing end part of the rotating shaft rod 210, the connecting ring 230 is fixedly connected around the rotating shaft rod 210, and the coarse adjustment knob 310 is connected with the connecting ring 230. It can be understood that after the grinding fineness is adjusted through coarse adjustment and fine adjustment, the rotating lever 240 is manually rotated, so that the rotating shaft rod 210 is rotated under the action of external force, the inner cutter 120, the fine adjustment washer 410, and the fine adjustment knob 420 are all rotated with the rotating shaft rod 210, so as to perform the action of grinding coffee beans; when the coarse adjustment knob 310 is rotated, the connecting ring 230 and the rotating shaft rod 210 are sequentially moved upward or downward, thereby driving the inner cutter 120 to move upward or downward, and the adjusting spring 220 is deformed; when the fine adjustment knob 420 is rotated, the fine adjustment washer 410 is driven to move upward or downward along the axis of the rotating shaft rod 210, thereby driving the inner cutter 120 to move upward or downward along the axis of the rotating shaft rod 210, further, when the fine adjustment knob 420 is rotated to be close to the fixed part 111, the inner cutter 120 is driven to slide to move upward along the axis of the rotating shaft rod 210, so that the adjusting spring 220 is deformed under the compression force; when the fine adjustment knob 420 is rotated to be away from the fixed part 111, the adjusting spring 220 is elastically returned, thereby driving the inner cutter 120 to move downward along the axis of the rotating shaft rod 210. Further, whether through coarse adjustment or fine adjustment, the gap between the inner cutter 120 and the outer cutter 130 can be adjusted.

[0042] Further, as shown in Figure 7As shown, the connecting ring 230 comprises a connecting ring body 231 and a connecting ring washer 232, the coarse adjustment rotating ring 310 is rotationally connected with the connecting ring body 231, the connecting ring body 231 is provided with a connecting hole 231a, the connecting ring washer 232 is located in the connecting hole 231a and abuts against the connecting ring body 231, the connecting ring washer 232 is in interference fit around the rotating shaft rod 210 to ensure that the rotating shaft rod 210 rotates smoothly during the grinding operation, and the connecting ring 230 rotates with the rotating shaft rod 210 and does not rotate up and down with the coarse adjustment rotating ring 310, so as to facilitate the grinding operation of the coffee beans. At the same time, when the grinding fineness is coarsely adjusted, the connecting ring body 231 is moved up and down by rotating the coarse adjustment rotating ring 310, thereby sequentially moving the rotating shaft rod 210 and the inner knife 120 to preliminarily adjust the gap between the inner knife 120 and the outer knife 130, achieving the effect of coarsely adjusting the grinding fineness.

[0043] Further, in combination with Figure 9 As shown, the connecting ring body 231 is provided with an outer convex ring 2311, and the inner wall of the coarse adjustment rotating ring 310 is also provided with an avoidance ring groove 312, and the outer convex ring 2311 is located in the avoidance ring groove 312, so as to facilitate the movement of the connecting ring body 231 up and down by rotating the coarse adjustment rotating ring 310 when the grinding fineness is coarsely adjusted, thereby moving the inner knife 120 up and down, and the connecting ring body 231 does not come off the avoidance ring groove 312 during the movement.

[0044] As Figure 3 As shown, in one embodiment, the rotating assembly 200 further comprises a rotating handle 250 connected with the rotating rocker 240. It can be understood that when the coffee bean grinding operation is performed, the rotating handle 250 can be held by hand to rotate around the rotating shaft rod 210 to drive the inner knife 120 to rotate, thereby performing the grinding step; further, the rotating handle 250 comprises a handle part 251 and a fixing part 252, the fixing part 252 is arranged around the rotating rocker 240, and the handle part 251 is provided with a rotating groove 251a, and the fixing part 252 is located in the rotating groove 251a to rotationally connect the handle part 251 with the fixing part 252. Specifically, when the rotating handle 250 is held and rotated by hand, the handle part 251 rotates relative to the fixing part 252 to keep the handle part 251 stationary relative to the hand.

[0045] As Figure 3 and Figure 6As shown, in one of the embodiments, the fine adjustment washer 410 is provided with a connecting protrusion 411, the inner cutter 120 is provided with a connecting accommodating groove 120b, and the connecting protrusion 411 is located in the connecting accommodating groove 120b, so that the fine adjustment washer 410 is further connected to the inner cutter 120. Specifically, when the connecting protrusion 411 is arranged in the connecting accommodating groove 120b, because the fine adjustment washer 410 abuts against the inner cutter 120 and the fine adjustment knob 420 respectively, the fine adjustment washer 410 remains stationary during fine adjustment of the grinding fineness, preventing the fine adjustment washer 410 from rotating with the fine adjustment knob 420.

[0046] As shown, Figure 3 As shown, in one of the embodiments, the grinding two-stage adjustment structure 10 further comprises a mounting ring 500 and a screwing piece 600. The mounting ring 500 is provided with a first screw hole 501, the outer shell 110 is provided with a second screw hole 110a, and the screwing piece 600 is arranged in the first screw hole 501 and the second screw hole 110a respectively, so that the mounting ring 500 is connected to the outer shell 110. The inner wall of the outer shell 110 has a mounting step, and the inner cutter 120 abuts against the mounting step and the mounting ring 500 respectively. In this way, the mounting ring 500 is fixedly connected to the outer shell 110 through the screwing piece 600, and under the action of the screwing piece 600, the two sides of the outer cutter 130 abut against the mounting step of the mounting ring 500 and the outer shell 110 respectively, thereby fixing the outer cutter 130 and preventing the outer cutter 130 from falling off.

[0047] As shown, Figure 5 As shown, in one of the embodiments, the coarse adjustment through hole 1101 comprises a connecting abutting through hole 1101a and a connecting accommodating through hole 1101b, and the coarse adjustment feedback column 320 comprises a coarse adjustment abutting part 321, a coarse adjustment transition part 322 and a coarse adjustment mounting part 323 connected in sequence. The coarse adjustment abutting part 321 is located in one of the coarse adjustment feedback grooves 311, the coarse adjustment transition part 322 is located in the abutting through hole 1101a, and one side of the coarse adjustment transition part 322 abuts against the bottom surface of the abutting through hole 1101a. The coarse adjustment mounting part 323 is located in the accommodating through hole 1101b. It can be understood that one side of the coarse adjustment feedback column 320 abuts in one of the coarse adjustment feedback grooves 311, i.e. the coarse adjustment abutting part 321 is located in one of the coarse adjustment feedback grooves 311, so as to play a role of feedback during rotation. The other side of the coarse adjustment feedback column 320 abuts against the outer shell 110, i.e. part of the coarse adjustment transition part 322 abuts against the bottom surface of the abutting through hole 1101a, so as to prevent the coarse adjustment feedback column 320 from falling into the outer shell 110 due to force during coarse adjustment.

[0048] The present disclosure also provides a coffee bean grinder, as shown in Figure 10As shown, the lower powder cup 11 and the grinding two-stage adjustment structure 10 of any one of the above embodiments are detachably mounted on the grinding two-stage adjustment structure 10. Further, the detachable mounting can be represented as detachable screw mounting, clamping mounting or buckling mounting, etc. In this embodiment, the lower powder cup 11 is screw-connected with the shell 110.

[0049] Compared with the prior art, the present disclosure has at least the following advantages:

[0050] The grinding two-stage adjustment structure 10 described above, when the coarse adjustment rotating ring 310 is rotated, the coarse adjustment feedback groove 311 moves with it, so that the coarse adjustment feedback column 320 is against any one of the coarse adjustment feedback grooves 311 to achieve coarse adjustment feedback effect, and each feedback represents a coarse adjustment scale. When the fine adjustment knob 420 is rotated after the preliminary adjustment is completed, the fine adjustment feedback column 430 rotates with it, and is against any one of the fine adjustment feedback grooves 410a to achieve fine adjustment feedback effect, and each feedback represents a fine adjustment scale. In this way, when the coarse adjustment assembly 300 and the fine adjustment assembly 400 adopt adjustment feedback, the current grinding fineness can be accurately confirmed according to the number of adjustment feedbacks, so as to ensure the taste and quality of the ground coffee, and further ensure the user's experience of using the coffee bean grinder.

[0051] The above-described embodiments only express several embodiments of the present disclosure, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the disclosed patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, a number of modifications and improvements can be made, which are within the scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A grinding two-stage adjusting structure, comprising a grinding assembly, a rotating assembly, a coarse adjusting assembly and a fine adjusting assembly, the grinding assembly comprising a housing, an inner cutter and an outer cutter, the outer cutter being mounted on an inner wall of the housing, the housing being internally provided with a fixing member, the fixing member being provided with an installation channel, part of the rotating assembly being arranged through the installation channel, the inner cutter being sleeved on a rotating shaft of the rotating assembly, characterized in that the coarse adjusting assembly comprises a coarse adjusting rotating ring and a coarse adjusting feedback column, the coarse adjusting rotating ring being connected with part of the rotating assembly outside the installation channel, and the coarse adjusting rotating ring being screw-connected with the housing, an inner wall of the coarse adjusting rotating ring being provided with a plurality of coarse adjusting feedback grooves, each of the coarse adjusting feedback grooves being used for corresponding to a coarse adjusting scale, the housing being provided with a coarse adjusting through hole, the coarse adjusting feedback column being located in the coarse adjusting through hole and abutting against the housing, an end of the coarse adjusting feedback column abutting against any one of the coarse adjusting feedback grooves; the fine adjusting assembly comprises a fine adjusting washer, a fine adjusting knob and a fine adjusting feedback column, the fine adjusting knob being rotationally connected with the rotating shaft of the rotating assembly, the fine adjusting washer being connected with the inner cutter and abutting against the fine adjusting knob, the fine adjusting washer having an annular region, the annular region being distributed with the rotating assembly as a center, the fine adjusting washer being provided with a plurality of fine adjusting feedback grooves, each of the fine adjusting feedback grooves being used for corresponding to a fine adjusting scale, the plurality of fine adjusting feedback grooves being located in the annular region, the fine adjusting knob being provided with a fine adjusting accommodating groove, the fine adjusting feedback column being located in the fine adjusting accommodating groove, an end of the fine adjusting feedback column abutting against any one of the fine adjusting feedback grooves. The rotating assembly comprises a rotating shaft rod, an adjusting spring, a connecting ring and a rotating lever, the rotating shaft rod being connected with the rotating lever, the rotating shaft rod being arranged through the installation channel, two ends of the adjusting spring respectively abutting against the fixing member and the inner cutter, the adjusting spring being annularly arranged on an outer wall of the rotating shaft rod, the fine adjusting washer and the inner cutter being sleeved on the rotating shaft rod, the fine adjusting knob being rotationally connected with a screwing end of the rotating shaft rod, the connecting ring being fixedly connected with the rotating shaft rod, the coarse adjusting rotating ring being connected with the connecting ring. The connecting ring comprises a connecting ring main body and a connecting washer, the coarse adjusting rotating ring being rotationally connected with the connecting ring main body, the connecting ring main body being provided with a connecting hole, the connecting washer being located in the connecting hole and abutting against the connecting ring main body, the connecting washer being annularly abutting against the rotating shaft rod in an interference fit.

2. The grinding two-stage regulation structure according to claim 1, characterized in that, The connecting ring main body is provided with an outer convex ring, and an inner wall of the coarse adjusting rotating ring is further provided with an empty annular groove, the outer convex ring being located in the empty annular groove.

3. The grinding two-stage regulation structure according to claim 2, characterized in that, The rotating assembly further comprises a rotating handle, the rotating handle being connected with the rotating lever.

4. The grinding two-stage regulation structure according to claim 3, characterized in that, The rotating handle comprises a handle part and a fixing part, the fixing part being annularly arranged on the rotating lever, the handle part being provided with a rotating groove, the fixing part being located in the rotating groove, so that the handle part is rotationally connected with the fixing part.

5. The grinding two-stage regulation structure according to claim 2, characterized in that, The fine adjusting washer is provided with a connecting convex column, the inner cutter is provided with a connecting accommodating groove, and the connecting convex column is located in the connecting accommodating groove.

6. The grinding two-stage regulation structure according to claim 5, characterized in that, ​ 7. The grinding two-stage regulation structure according to claim 1, characterized in that, ​ 8. The abrasive two-stage regulation structure according to claim 1, wherein, The grinding two-stage adjusting structure further comprises a mounting ring and a screwing member, the mounting ring is provided with a first screw hole, the shell is provided with a second screw hole, and the screwing member is respectively arranged in the first screw hole and the second screw hole, so that the mounting ring is connected to the shell, and the inner wall of the shell is provided with a mounting step, and the inner cutter is respectively abutted against the mounting step and the mounting ring.

9. The grinding two-stage regulation structure according to claim 1, characterized in that, The rough adjustment via hole comprises a connecting abutting via hole and a containing via hole, the rough adjustment feedback column comprises a rough adjustment abutting part, a rough adjustment transition part and a rough adjustment mounting part which are sequentially connected, the rough adjustment abutting part is located in one of the rough adjustment feedback grooves, the rough adjustment transition part is located in the abutting via hole, and one side of the rough adjustment transition part is abutted against the bottom surface of the abutting via hole, and the rough adjustment mounting part is located in the containing via hole.

10. A coffee bean grinder characterized by, The grinding two-stage adjusting structure comprises a lower powder cup and the grinding two-stage adjusting structure according to any one of claims 1-9, and the lower powder cup is detachably mounted on the grinding two-stage adjusting structure.

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