Coffee bean grinder convenient to use

Abstract

The utility model relates to the technical field of coffee bean grinding machines, and discloses a coffee bean grinding machine convenient to use. The device comprises a control system, a cover body, a base, a movable cutterhead mechanism, a fixed cutterhead mechanism and a distance measuring assembly, the fixed cutterhead mechanism is installed on the base, the movable cutterhead mechanism is provided with a movable cutterhead, the movable cutterhead is arranged on one side of the fixed cutterhead mechanism, and the cover body covers the movable cutterhead mechanism and the fixed cutterhead mechanism; the fixed cutterhead mechanism comprises a fixed cutterhead and a distance adjusting assembly which are connected with each other, and a movable cutterhead, the grinding surfaces of the fixed cutterhead are arranged oppositely, and a grinding gap is reserved between the movable cutterhead and the fixed cutterhead; a feeding hole communicated with the fixed cutter head mechanism and the grinding gap is formed in the top of the cover body, and a discharging hole communicated with the grinding gap is formed in the bottom of the cover body; the distance measuring assemblies are arranged on the movable cutter disc mechanism and the fixed cutter disc mechanism correspondingly and electrically connected with the control system. According to the coffee bean grinder, an existing coffee bean grinder is optimized, the use convenience is improved, the adjusting process of the cutter head is simplified, and the cutter head adjusting convenience is improved.

Description

Technical Field

[0001] This application relates to the technical field of coffee grinders, and in particular to a user-friendly coffee grinder. Background Technology

[0002] A coffee grinder is a device used to grind whole coffee beans into powder for subsequent coffee brewing. Different brewing methods (such as espresso, French press, pour-over, etc.) require coffee powder of different coarseness, so ensuring the uniformity and consistency of the coffee powder is very important.

[0003] Most existing coffee grinders grind coffee beans by hand, which is inconvenient. On the other hand, different coffee brewing methods require different grind sizes. Manual coffee grinders adjust the distance between the blades by turning adjustment knobs or gears, which can easily lead to inconsistent adjustment precision for the same type of coffee beans, and the adjustment process is also quite cumbersome. Utility Model Content

[0004] The technical problem to be solved by this application is to optimize existing coffee grinders, improve ease of use, and simplify the burr adjustment process, thereby improving the ease of burr adjustment.

[0005] This application provides a user-friendly coffee grinder, including a control system. The coffee grinder also includes a cover, a base, a moving burr mechanism, a fixed burr mechanism, and a distance measuring component. The fixed burr mechanism is mounted on the base, and the moving burr mechanism has a moving burr located on one side of the fixed burr mechanism. The cover covers the moving burr mechanism and the fixed burr mechanism. The fixed burr mechanism includes a fixed burr and a distance adjusting component connected to each other. The grinding surfaces of the moving burr and the fixed burr are facing each other, and a grinding gap is left between them. The top of the cover has an inlet communicating with the fixed burr mechanism and the grinding gap, and the bottom of the cover has an outlet communicating with the grinding gap. The distance measuring component is respectively disposed on the moving burr mechanism and the fixed burr mechanism, and the distance measuring component is electrically connected to the control system.

[0006] Preferably, the moving cutter head mechanism further includes a drive component and a leveling component. The moving cutter head is connected to the power output end of the drive component. The power output end of the drive component is provided with a feed thread that connects the feed port, the fixed cutter head mechanism, and the grinding gap. The leveling component is sleeved around the drive component.

[0007] Preferably, the distance adjustment assembly includes a first driving member, a first driven member, and a second driven member. The first driven member is rotatably sleeved on the outer peripheral wall of the leveling assembly. The power output end of the first driving member is screwed to the first driven member, and the first driven member is threadedly connected to the second driven member. The second driven member is connected to the fixed blade disc mechanism.

[0008] Preferably, the first driven member includes a threaded ring and a threaded outer ring. The threaded outer ring is rotatably connected to the outer peripheral wall of the leveling assembly. The threaded ring is fixedly sleeved on the threaded outer ring. The first driving member is threadedly connected to the threaded ring. The end of the threaded outer ring away from the threaded ring is threadedly connected to the second driven member.

[0009] Preferably, the second driven member includes a bean feeding and grinding chamber and a grinding spring. The bean feeding and grinding chamber is sleeved on the feed thread and the threaded outer ring. The bean feeding and grinding chamber is slidably connected to the leveling assembly and threadedly connected to the threaded outer ring. The two ends of the grinding spring abut against the leveling assembly and the bean feeding and grinding chamber, respectively. The bean feeding and grinding chamber is connected to the fixed blade mechanism and has a feed channel communicating with the feed inlet.

[0010] Preferably, the ranging component includes a Hall plate and a magnet. The Hall plate is fixed to the side of the fixed cutter head mechanism facing the movable cutter head mechanism, and an IC element is provided on the Hall plate. The magnet is fixed to the side of the movable cutter head mechanism facing the fixed cutter head mechanism, and the positions of the magnet and the IC element correspond to each other.

[0011] Preferably, the magnet and the IC element are provided in multiple groups, and the magnet and the IC element in each group are arranged at equal distances.

[0012] Preferably, the coffee grinder also includes a display screen, which is disposed on the cover or base, and the ranging component is electrically connected to the display screen.

[0013] Preferably, the cover includes a cover body and a rear cover body, the rear cover body is disposed outside the fixed cutter head mechanism, the cover body is disposed outside the movable cutter head mechanism, and the cover body is detachably connected to the rear cover body.

[0014] Preferably, the coffee grinder also includes a locking buckle, which is disposed on the outer wall of the rear cover and is detachably connected to the cover.

[0015] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] This coffee grinder operates under a control system, significantly improving grinding convenience compared to manual grinders. The grinder adjusts the distance between the moving and stationary burrs based on the type of coffee beans being ground. First, the distance adjustment mechanism is activated, moving the stationary burr closer to or further away from the moving burr until the desired distance is reached. At this point, a distance measuring component detects and records the change in distance between the burrs, allowing for quick adjustment to the same distance the next time the grinder is used. This improves the accuracy of burr adjustment and simplifies the process, enhancing ease of adjustment. When grinding coffee beans, pour them into the feed inlet. Once the beans enter the grinding gap, the moving burr mechanism rotates relative to the stationary burr, grinding the beans into powder. The powder then falls through the outlet at the bottom of the casing into a container. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the coffee grinder in the embodiments of this application.

[0019] Figure 2 This is a cross-sectional view of the coffee grinder in an embodiment of this application.

[0020] Figure 3 This is a cross-sectional view of the coffee grinder in an embodiment of this application from another perspective.

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 This is a structural diagram of the drive shaft in an embodiment of this application.

[0023] Figure 6 This is an exploded view of the coffee grinder in the embodiments of this application.

[0024] Figure 7 This is an exploded view of the coffee grinder in one of the embodiments of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Cover; 2. Base; 3. Grinding gap; 4. Locking buckle; 5. Cover; 6. Rear cover; 7. Feed inlet; 8. Discharge outlet; 9. Moving blade disc; 10. Drive assembly; 11. Leveling assembly; 12. Second drive component; 13. Drive shaft; 14. Feed thread; 15. Slide groove; 16. Bean grinding chamber; 17. Grinding spring; 8. Bushing; 19. Feed channel; 20. Leveling screw; 21. Leveling inner ring; 22. Leveling spring; 23. Driven connecting part; 24. Grinding chamber outer ring; 25. Sliding pin; 26. Bearing part; 27. Fixed cutter head; 28. Distance adjustment assembly; 29. ​​First driving part; 30. First driven part; 31. Second driven part; 32. Drive worm gear; 33. Drive device; 34. Threaded ring; 35. Threaded outer ring; 36. Hall plate; 37. IC component; 38. Magnet. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] Please refer to Figures 1 to 7 This application provides a user-friendly coffee grinder for grinding coffee beans. Specifically, it includes a control system, a housing 1, a base 2, a moving blade mechanism, a fixed blade mechanism, and a ranging component.

[0031] The base 2 is connected to the fixed cutter head mechanism at its top, and the movable cutter head mechanism is horizontally fitted around the middle of the fixed cutter head mechanism. A cover 1 is placed over both the movable and fixed cutter head mechanisms. One end of the movable cutter head mechanism has a movable cutter head 9, and one end of the fixed cutter head mechanism has a fixed cutter head 27. The grinding surfaces of the movable cutter head 9 and the fixed cutter head 27 face each other, and a grinding gap 3 exists between them. The top of the cover 1 has an inlet 7 connecting the fixed cutter head mechanism and the grinding gap 3, and the bottom has an outlet 8 connecting the grinding gap 3. Distance measuring components are respectively installed on the movable and fixed cutter head mechanisms, and are electrically connected to the control system.

[0032] This coffee grinder operates under control, significantly improving the convenience of grinding compared to manual grinders. The grinder can adjust the distance between the moving burr 9 and the fixed burr 27 according to the type of coffee beans being ground. First, the distance adjustment component 28 is activated, causing the fixed burr 27 to move closer to or further away from the moving burr 9 until the desired distance is reached. At this time, the distance measuring component detects the change in distance between the fixed burr 27 and the moving burr 9 and records this distance, allowing for quick adjustment to the same distance the next time it is used. This improves the accuracy of burr adjustment and simplifies the burr adjustment process, enhancing the convenience of burr adjustment. When grinding coffee beans using this grinder, coffee beans are poured into the feed inlet 7. After the coffee beans enter the grinding gap 3, the moving burr mechanism is activated, causing the moving burr 9 to rotate relative to the fixed burr 27, grinding the coffee beans into powder. The powder then falls into the container through the discharge outlet 8 at the bottom of the housing 1.

[0033] Please refer to Figures 2 to 5 In one specific embodiment, the moving cutter head mechanism further includes a drive assembly 10 and a leveling assembly 11. The moving cutter head 9 is connected to the power output end of the drive assembly 10, and the drive assembly 10 has a feed thread 14 on its periphery that connects the feed inlet 7, the fixed cutter head mechanism, and the grinding gap 3. The leveling assembly 11 is sleeved around the drive assembly 10.

[0034] In one specific embodiment, the distance adjustment assembly 28 includes a first driving member 29, a first driven member 30, and a second driven member 31. The first driven member 30 is rotatably connected to the outer peripheral wall of the leveling assembly 11. The first driving member 29 is threadedly connected to the first driven member 30, and the first driven member 30 is threadedly connected to the second driven member 31. The second driven member 31 is fixedly connected to the fixed cutter disc 27. Meanwhile, the moving cutter disc 9 and the fixed cutter disc 27 are arranged parallel to each other, and the side of the moving cutter disc 9 with grinding teeth and the side of the fixed cutter disc 27 with grinding teeth are directly opposite each other.

[0035] Here, after the coffee grinder is assembled, to eliminate parallelism errors, the moving blade 9 and the fixed blade 27 need to be leveled first. Specifically, the leveling component 11 first drives the power output end of the drive component 10 to slide horizontally, thereby driving the moving blade 9 to move horizontally closer to the fixed blade 27 until the moving blade 9 and the fixed blade 27 are in close contact. At this time, the parallelism between the moving blade 9 and the fixed blade 27 is leveled, that is, the moving blade 9 and the fixed blade 27 are parallel to each other in the vertical direction.

[0036] When the user adjusts the distance between the moving blade 9 and the fixed blade 27, the first drive component 29 is activated first. The first drive component 29 is threadedly connected to the first driven component 30, causing the first driven component 30 to rotate. The first driven component 30 is threadedly connected to the second driven component 31, causing the second driven component 31 to slide horizontally. This, in turn, causes the fixed blade 27 to move horizontally closer to or further away from the moving blade 9 until the desired distance is reached. Therefore, when grinding coffee beans, the user can adjust the distance between the moving blade 9 and the fixed blade 27 according to the desired coffee powder particle size. This blade adjustment structure optimizes the existing blade adjustment structure of coffee grinders, improving the leveling accuracy and ease of blade adjustment.

[0037] In one specific embodiment, the drive assembly 10 includes a second drive member 12 and a drive shaft 13. The drive shaft 13 has a groove 15 at one end connected to the second drive member 12. The power output end of the second drive member 12 slides within the groove 15, and the drive shaft 13 is horizontally movable. The drive shaft 13 is fixedly connected to the moving blade disc 9. In this embodiment, the second drive member 12 is a motor. When using this coffee grinder to grind coffee, the motor is started, and the motor's power output end drives the drive shaft 13 to rotate, which in turn drives the moving blade disc 9 to rotate, thereby grinding the coffee beans.

[0038] In one specific embodiment, the leveling assembly 11 includes a leveling screw 20, a leveling inner ring 21, a leveling spring 22, and a driven connector 23. The leveling inner ring 21 is fixedly sleeved on the outside of the second driving member 12 and is also fixedly connected to the top of the base 2. The driven connector 23 is fixedly sleeved on the outside of the drive shaft 13 near the end of the second driving member 12. One end of the leveling screw 20 with threads passes through the leveling inner ring 21 and is threadedly connected to the driven connector 23. The leveling spring 22 is sleeved on the leveling screw 20, and both ends of the leveling spring 22 abut against the driven connector 23 and the leveling inner ring 21, respectively. In this embodiment, three leveling screws 20 are provided, and the three leveling screws 20 are equidistantly arranged around the leveling inner ring 21 in the circumferential direction, thereby improving the leveling accuracy of the moving cutter head 9 and the fixed cutter head 27.

[0039] Furthermore, the driven connector 23 includes a grinding chamber outer ring 24, a sliding pin 25, and a bearing 26, which are fixedly connected in sequence. The bearing 26 is fixedly sleeved on the end of the drive shaft 13 near the second drive member 12. One end of the leveling screw 20 with threads is threaded into the sliding pin 25. The two ends of the leveling spring 22 abut against the sliding pin 25 and the leveling inner ring 21, respectively. Corresponding to the number of leveling screws 20, three sliding pins 25 are provided, and the three sliding pins 25 are fixed at equal intervals between the grinding chamber outer ring 24 and the bearing 26.

[0040] To address this, after assembling the coffee grinder, the user can rotate the end of the leveling screw 20 furthest from the sliding pin 25, causing the leveling screw 20 to connect threadedly with the sliding pin 25. This causes the sliding pin 25 to slide horizontally towards the leveling screw 20, thereby causing the sliding pin 25 to drive the outer ring 24 of the grinding chamber and the bearing 26 to slide towards the second drive component 12. This, in turn, drives the drive shaft 13 to drive the moving blade 9 towards the fixed blade 27. At this time, the sliding force of the sliding pin 25 is greater than the abutting force of the leveling spring 22. The leveling spring 22 provides a buffering effect on the sliding of the sliding pin 25, improving its stability. When the moving blade 9 and the fixed blade 27 are in close contact, their parallelism is considered leveled.

[0041] In one specific embodiment, the first driven member 30 includes a threaded ring 34 and a threaded outer ring 35. The threaded outer ring 35 is rotatably connected to the outer peripheral wall of the leveling inner ring 21, the threaded ring 34 is fixedly sleeved on the outer peripheral wall of the threaded outer ring 35, the first driving member 29 is threadedly connected to the outer peripheral wall of the threaded ring 34, and the outer peripheral wall of the threaded outer ring 35 at the end away from the threaded ring 34 is threadedly connected to the second driven member 31.

[0042] The second driven component 31 includes a bean-feeding grinding chamber 16 and a grinding spring 17. The bean-feeding grinding chamber 16 is sleeved on the outside of the sliding pin 25, the feed thread 14, and the threaded outer ring 35. A bushing 8 is sleeved between the sliding pin 25 and the bean-feeding grinding chamber 16. The bean-feeding grinding chamber 16 and the bushing 8 are horizontally slidably connected to the sliding pin 25, and the inner peripheral wall of the bean-feeding grinding chamber 16 is threadedly connected to the outer peripheral wall of the threaded outer ring 35. The bushing 8 can reduce the friction between the bean-feeding grinding chamber 16 and the sliding pin 25, making the sliding of the bean-feeding grinding chamber 16 smoother. The two ends of the grinding spring 17 abut against the outer ring 24 of the grinding chamber and the bean-feeding grinding chamber 16, respectively. A fixed blade disc 27 is fixedly connected to one side of the bean-feeding grinding chamber 16. The grinding spring 17 has a buffering effect on the sliding of the bean-feeding grinding chamber 16, which can improve the stability of the sliding of the bean-feeding grinding chamber 16.

[0043] In this embodiment, the top of the bean grinding chamber 16 is provided with a feeding channel 19 that connects to the feeding port 7. Coffee beans can enter the gap between the feeding threads 14 through the feeding port 7 and the feeding channel 19. When the second driving member 12 drives the driving shaft 13 to rotate, the driving shaft 13 drives the feeding thread 14 to rotate, thereby feeding the coffee beans into the grinding gap 3 for grinding.

[0044] Please refer to Figure 6 and Figure 7 In one specific embodiment, the first driving component 29 includes a driving worm 32 and a driving device 33. The power output end of the driving device 33 is connected to the driving worm 32, and the driving worm 32 is threadedly connected to a threaded ring 34. In this embodiment, the driving device 33 includes a motor and a synchronous belt, which is rotatably connected to the power output end of the motor and one end of the driving worm 32. Therefore, starting the motor to drive the synchronous belt to rotate will drive the driving worm 32 to rotate, thereby driving the threaded ring 34 to rotate. In other embodiments, the driving device 33 can also have other structures, such as the power output end of the motor being directly connected to one end of the driving worm 32, or the power output end of the motor being connected to one end of the driving worm 32 through a worm gear, etc.

[0045] To adjust the distance between the moving blade 9 and the fixed blade 27, the user first activates the drive device 33 to rotate the drive worm gear 32, which in turn rotates the threaded ring 34 and the threaded outer ring 35 synchronously. The threaded outer ring 35 is threadedly connected to the bean inlet grinding chamber 16, causing the bean inlet grinding chamber 16 to slide horizontally towards or away from the threaded outer ring 35. This, in turn, causes the bean inlet grinding chamber 16 to slide horizontally towards or away from the moving blade 9 until the desired distance is reached. At this point, under the limiting action of the leveling component 11, the drive component 10 and the moving blade 9 remain fixed, maintaining the parallelism between the moving blade 9 and the fixed blade 27 to adjust the distance between them.

[0046] In one specific embodiment, distance detection components are respectively disposed on the outer ring 24 of the grinding chamber and the bean feeding grinding chamber 16. Specifically, the distance detection components include a Hall plate 36 and a magnet 38. The Hall plate 36 is fixed on the side of the outer ring 24 of the grinding chamber facing the bean feeding grinding chamber 16. An IC element 37 (i.e., a semiconductor element) connected to the control system is disposed on the Hall plate 36. The magnet 38 is fixed on the side of the bean feeding grinding chamber 16 near the outer ring 24 of the grinding chamber, and the positions of the IC element 37 and the magnet 38 correspond to each other.

[0047] IC element 37 is used to detect the magnetic signal of magnet 38. When the user adjusts the distance between the moving blade mechanism and the fixed blade mechanism, the distance between magnet 38 and IC element 37 changes with the left and right movement of the bean grinding chamber 16, thus allowing for accurate calculation of the distance change. Multiple sets of magnets 38 and IC elements 37 are provided, with each set of magnets 38 and IC elements 37 arranged at equal distances. In this embodiment, three sets of IC elements 37 and magnets 38 are provided, and the three sets of IC elements 37 and magnets 38 are arranged at equal distances. Therefore, the parallelism change between the moving blade mechanism and the fixed blade mechanism can also be calculated.

[0048] The Hall plate 36 is equipped with a linear Hall sensor, which outputs voltage based on the Hall effect between the magnetic field of the magnet 38 and the IC element 37. After calibration with the actual distance, a one-to-one correspondence between voltage and distance can be achieved, allowing the control system to obtain actual distance feedback, thereby closing the system loop and improving control accuracy. Furthermore, the main body of the grinder is equipped with a display screen that can display data such as distance changes and parallelism changes.

[0049] Furthermore, the coffee grinder also includes a display screen. The display screen is mounted on the housing 1 or the base 2, and the distance measuring component is electrically connected to the display screen so that the distance measuring component displays the measured distance changes on the display screen, allowing the user to intuitively see the adjustment distance of the moving burr 9 and the fixed burr 27 each time.

[0050] In one specific embodiment, the cover 1 includes a cover 5 and a rear cover 6. The rear cover 6 covers the outside of the fixed blade mechanism, and the cover 5 covers the outside of the movable blade mechanism. The feed inlet 7 is formed on the top of the rear cover 6, and the discharge outlet 8 is formed on the bottom of the cover 5. Furthermore, the coffee grinder also includes a locking buckle 4, which is fixedly mounted on the outer wall of the rear cover 6. The cover 5 is detachably connected to the rear cover 6 via the locking buckle 4, allowing the user to remove the cover 5 and periodically clean the movable blade 9 and the fixed blade 27, thereby improving the grinding accuracy of the coffee beans. In other embodiments, the connection between the cover 5 and the rear cover 6 can also be a threaded connection, a screw connection, etc.

[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A user-friendly coffee grinder, comprising a control system, characterized in that: The coffee grinder also includes a housing, a base, a moving blade mechanism, a fixed blade mechanism, and a ranging component; The fixed cutter head mechanism is installed on the base, the movable cutter head mechanism is provided with a movable cutter head, the movable cutter head is located on one side of the fixed cutter head mechanism, and the cover is provided outside the movable cutter head mechanism and the fixed cutter head mechanism; The fixed cutter disc mechanism includes a fixed cutter disc and a distance adjustment component connected to each other. The grinding surfaces of the moving cutter disc and the fixed cutter disc are arranged facing each other, and a grinding gap is left between the moving cutter disc and the fixed cutter disc. The top of the cover has a feed inlet that connects the fixed blade disc mechanism and the grinding gap, and the bottom of the cover has a discharge outlet that connects the grinding gap. The ranging components are respectively mounted on the moving cutter head mechanism and the fixed cutter head mechanism, and the ranging components are electrically connected to the control system.

2. The coffee grinder with convenient operation according to claim 1, characterized in that, The moving cutter head mechanism also includes a drive assembly and a leveling assembly. The moving cutter head is connected to the power output end of the drive assembly. The power output end of the drive assembly is provided with a feed thread that connects the feed port, the fixed cutter head mechanism, and the grinding gap. The leveling assembly is sleeved around the drive assembly.

3. The coffee grinder with convenient operation according to claim 2, characterized in that, The distance adjustment assembly includes a first driving member, a first driven member, and a second driven member. The first driven member is rotatably sleeved on the outer peripheral wall of the leveling assembly. The power output end of the first driving member is screwed to the first driven member, and the first driven member is threadedly connected to the second driven member. The second driven member is connected to the fixed blade disc mechanism.

4. A convenient coffee grinder according to claim 3, characterized in that, The first driven member includes a threaded ring and a threaded outer ring. The threaded outer ring is rotatably connected to the outer peripheral wall of the leveling assembly. The threaded ring is fixedly sleeved on the threaded outer ring. The first driving member is threadedly connected to the threaded ring. The end of the threaded outer ring away from the threaded ring is threadedly connected to the second driven member.

5. A convenient coffee grinder according to claim 3, characterized in that, The second driven component includes a bean feeding and grinding chamber and a grinding spring. The bean feeding and grinding chamber is sleeved on the feed thread and the threaded outer ring. The bean feeding and grinding chamber is slidably connected to the leveling assembly and threadedly connected to the threaded outer ring. The two ends of the grinding spring abut against the leveling assembly and the bean feeding and grinding chamber, respectively. The bean feeding and grinding chamber is connected to the fixed blade mechanism and has a feed channel communicating with the feed inlet.

6. A convenient coffee grinder according to claim 1, characterized in that, The ranging component includes a Hall plate and a magnet. The Hall plate is fixed to the side of the fixed cutter head mechanism facing the movable cutter head mechanism, and an IC element is provided on the Hall plate. The magnet is fixed to the side of the movable cutter head mechanism facing the fixed cutter head mechanism, and the position of the magnet corresponds to that of the IC element.

7. A convenient coffee grinder according to claim 6, characterized in that, The magnets and the IC components are provided in multiple groups, and the magnets and the IC components in each group are arranged at equal distances.

8. A convenient coffee grinder according to claim 1, characterized in that, The coffee grinder also includes a display screen, which is mounted on the housing or base, and the ranging component is electrically connected to the display screen.

9. A convenient coffee grinder according to claim 1, characterized in that, The cover includes a cover body and a rear cover body. The rear cover body is disposed outside the fixed cutter head mechanism, and the cover body is disposed outside the movable cutter head mechanism. The cover body is detachably connected to the rear cover body.

10. A convenient coffee grinder according to claim 9, characterized in that, The coffee grinder also includes a locking buckle, which is located on the outer wall of the rear cover and is detachably connected to the cover.

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