Bean grinder capable of being detached and cleaned

Abstract

The bean grinder comprises a machine shell, a grinding box and a grinding assembly, the grinding box is provided with a grinding cavity with an opening in the upper portion, the grinding assembly comprises a fixed grinding disc, a movable grinding disc, a support and a driving motor, the fixed grinding disc is fixed in the grinding cavity, and the support is provided with a body part and a rotating shaft protruding out of the bottom face of the body part. The main body part is placed in the grinding cavity, the movable grinding disc is fixed on the bottom surface of the main body part and is positioned above the fixed grinding disc, and the rotating shaft penetrates through the movable grinding disc and the fixed grinding disc and then extends to the bottom of the grinding cavity. The movable millstone is fixed to the bottom face of the body part of the support, the support can be directly pulled out of the grinding cavity when cleaning is needed, the support and the movable millstone are disassembled, the movable millstone can be conveniently cleaned, and after the support and the movable millstone are disassembled, the grinding cavity and the fixed millstone in the grinding cavity can be cleaned, so that the grinding effect is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the field of electrical appliances, and particularly relates to a bean grinder that can be disassembled and cleaned. Background Art

[0002] A bean grinder is a machine specifically used for grinding coffee beans into powder. The bean grinder clamps and grinds coffee beans through the cooperation of a rotating moving grinding disc and fixed grinding teeth, and finally produces uniform powder suitable for brewing coffee. After daily use of the bean grinder, it needs to be cleaned. However, the grinding disc of the existing bean grinder cannot be disassembled, making it difficult for users to clean the grinding disc, resulting in easy accumulation of coffee powder on the grinding disc and affecting the grinding effect of the bean grinder. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a bean grinder that can be disassembled and cleaned, which can disassemble and clean the grinding disc to avoid affecting the grinding effect.

[0004] The technical solution of the utility model is realized as follows:

[0005] A bean grinder that can be disassembled and cleaned includes a machine shell with an opening at the top, a grinding box installed at the opening of the machine shell, and a grinding assembly located inside the machine shell. The grinding box has a grinding cavity with an upper opening. The grinding assembly includes a fixed grinding disc, a moving grinding disc, a bracket, and a driving motor. The fixed grinding disc is fixed in the grinding cavity. The bracket has a main body part and a rotating shaft protruding from the bottom surface of the main body part. The main body part is placed in the grinding cavity. The moving grinding disc is fixed to the bottom surface of the main body part and is located above the fixed grinding disc. The rotating shaft passes through the moving grinding disc and the fixed grinding disc and extends to the bottom of the grinding cavity. The output shaft of the driving motor passes through the bottom of the grinding box and extends into the grinding cavity. The rotating shaft is sleeved outside the output shaft of the driving motor. The inner wall of the rotating shaft has a non-circular surface, and the outer wall of the output shaft of the driving motor is provided with a non-circular contact surface that cooperates with the non-circular surface.

[0006] Preferably, the upper end of the output shaft of the driving motor is hexagonal, the upper end of the inner cavity of the rotating shaft is hexagonal, and the upper end of the output shaft of the driving motor is inserted into the upper end of the inner cavity of the rotating shaft.

[0007] Preferably, it further includes an adjusting assembly. The adjusting assembly includes a rotary cover, a lifting member, and a fixing member. The fixing member is connected to the top surface of the grinding box by screws. The rotary cover covers the top of the fixing member and protrudes from the opening of the machine shell. The lifting member is installed at the center of the inner top surface of the rotary cover. A threaded hole is provided at the center of the fixing member. The middle part of the lifting member is screwed into the threaded hole. The lower end of the lifting member abuts against the top surface of the bracket. The upper end of the output shaft of the driving motor has a cavity with an upper opening. A spring is provided in the cavity to always press the bracket against the adjusting assembly. When the rotary cover rotates, it drives the lifting member to rotate relative to the fixing member to drive the bracket to move up and down, thereby adjusting the distance between the fixed grinding disc and the moving grinding disc.

[0008] Preferably, the adjusting assembly further includes a chuck disposed inside the screw cap. A clamping hole is provided in the middle of the chuck. The upper end of the lifting member is clamped in the clamping hole. A plurality of clamping teeth are provided on the side wall of the chuck, and a clamping strip is provided on the inner wall of the screw cap. The clamping strip is clamped in the space between two adjacent clamping teeth.

[0009] Preferably, the adjusting assembly further includes a mating ring disposed between the lifting member and the bracket. A middle part of the bottom surface of the lifting member extends downward to form an extension part. The extension part extends into the inner hole of the mating ring. The top surface of the mating ring abuts against the bottom surface of the lifting member, and the bottom surface of the mating ring abuts against the top surface of the bracket.

[0010] Preferably, a limiting groove is provided on the fixing member and below the threaded hole. The limiting groove communicates with the threaded hole. An anti-detachment member is provided in the limiting groove. A limiting ring protrudes upward from the top surface of the body part. The mating ring is located inside the ring of the limiting ring. The top of the limiting ring extends into the limiting groove. A convex part is provided on the side wall of the top of the limiting ring. The convex part is located above the anti-detachment member. A groove is formed between the convex part and the top surface of the body part. The anti-detachment member partially extends into the groove.

[0011] Preferably, the convex part is an annular flange provided on the side wall of the top of the mating ring. A clamping groove is provided on the groove wall of the limiting groove. The anti-detachment member is a special-shaped ring. The special-shaped ring includes a plurality of straight segments and a plurality of arc segments. The arc segments and the straight segments are connected in sequence to form a ring. The straight segments extend into the groove, and the arc segments are clamped in the clamping groove.

[0012] Preferably, the adjusting assembly further includes an annular decorative cover. The decorative cover is sleeved outside the fixing member. The bottom of the screw cap is located inside the ring of the decorative cover. The outer wall of the decorative cover is aligned with the outer wall of the casing.

[0013] Preferably, in the contact surface between the decorative cover and the fixing member, a strong magnet is provided on one of them, and a magnetized substance attracted to the strong magnet is provided on the other.

[0014] Preferably, a recessed opening is provided on the fixing member. A positioning post adapted to the recessed opening is provided on the inner side of the decorative cover. The positioning post is inserted into the recessed opening.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] The coffee grinder includes a housing, a grinding box, and a grinding assembly. The grinding box has a grinding chamber. The grinding assembly includes a fixed grinding disc, a moving grinding disc, a bracket, and a driving motor. The fixed grinding disc is fixed in the grinding chamber. The bracket has a body portion and a rotating shaft protruding from the bottom surface of the body portion. The body portion is placed in the grinding chamber. The moving grinding disc is fixed to the bottom surface of the body portion and is located above the fixed grinding disc. The rotating shaft passes through the moving grinding disc and the fixed grinding disc and extends towards the bottom of the grinding chamber. Since the rotating shaft is sleeved outside the output shaft of the driving motor, the inner wall of the rotating shaft has a non-circular surface, and the outer wall of the output shaft of the driving motor is provided with a non-circular contact surface that cooperates with the non-circular surface. The contact surface between the rotating shaft and the output shaft of the driving motor contains a non-circular part, so that the rotating shaft rotates with the output shaft of the driving motor, and the rotating shaft will not rotate relative to the output shaft of the driving motor. Because the rotating shaft of the bracket is sleeved outside the output shaft of the driving motor and the rotating shaft is not fixedly connected to the output shaft of the driving motor, and the moving grinding disc is fixed to the bottom surface of the body portion of the bracket, when cleaning is required, the bracket can be directly pulled out from the grinding chamber, and the bracket together with the moving grinding disc is removed, which is convenient for cleaning the moving grinding disc. Moreover, after the bracket and the moving grinding disc are removed, the grinding chamber and the fixed grinding disc in the grinding chamber can be cleaned to avoid affecting the grinding effect. Description of the Drawings

[0017] Figure 1 is a three-dimensional sectional view of the present invention;

[0018] Figure 2 is a three-dimensional sectional view of the grinding assembly in the present invention;

[0019] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A in

[0020] Figure 4 is a three-dimensional sectional view of the bracket in the present invention;

[0021] Figure 5 is a three-dimensional sectional view of the adjusting assembly in the present invention;

[0022] Figure 6 is an exploded view of the adjusting assembly in the present invention;

[0023] Figure 7 is a three-dimensional structural schematic diagram of the screw cap in the present invention;

[0024] Figure 8 is a three-dimensional structural schematic diagram of the fixing member in the present invention;

[0025] Figure 9 is a disassembled state schematic diagram of the adjusting assembly, the bracket, and the moving grinding disc in the present invention;

[0026] Figure 10 is a sectional view of the fixing member and the bracket in the present invention;

[0027] Figure 11 Schematic three-dimensional structure diagram of the anti-disengagement part in the present utility model;

[0028] Figure 12 Schematic three-dimensional structure diagram of the adjusting assembly, bracket and moving grinding disc in the present utility model;

[0029] Figure 13 Schematic three-dimensional structure diagram of the decorative cover in the present utility model.

[0030] Reference numerals in the drawings:

[0031] 1 - Housing;

[0032] 2 - Grinding box; 21 - Grinding cavity;

[0033] 3 - Grinding assembly; 31 - Fixed grinding disc; 32 - Moving grinding disc; 33 - Driving motor; 331 - Cavity; 332 - Non-circular contact surface; 333 - Output shaft of the driving motor; 34 - Bracket; 341 - Body part; 3411 - Limiting ring; 34111 - Convex part; 3412 - Groove; 342 - Rotating shaft; 3421 - Non-circular surface; 35 - Spring;

[0034] 4 - Adjusting assembly; 41 - Screw cap; 411 - Card strip; 42 - Lifting part; 421 - Extension part; 43 - Fixing part; 431 - Threaded hole; 432 - Limiting groove; 433 - Anti-disengagement part; 4331 - Straight section; 4332 - Arc section; 434 - Clamping groove; 435 - Depressed opening; 44 - Clamping disc; 441 - Clamping hole; 442 - Clamping teeth; 45 - Fitting ring; 46 - Screw; 47 - Bolt; 48 - Cover plate; 49 - Decorative cover; 491 - Strong magnet; 492 - Positioning post. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] See Figures 1 to 4, this embodiment provides a detachable and cleanable coffee grinder, which includes a housing 1 with an opening at the top, a grinding box 2 installed at the opening of the housing 1, and a grinding assembly 3 located inside the housing 1. The grinding box 2 has a grinding cavity 21 with an upper opening. The grinding assembly 3 includes a fixed grinding disc 31, a moving grinding disc 32, a bracket 34, and a driving motor 33. The fixed grinding disc 31 is fixed inside the grinding cavity 21. The bracket 34 has a body part 341 and a rotating shaft 342 protruding from the bottom surface of the body part 341. The body part 341 is placed inside the grinding cavity 21. The moving grinding disc 32 is fixed to the bottom surface of the body part 341 and is located above the fixed grinding disc 31. The rotating shaft 342 passes through the moving grinding disc 32 and the fixed grinding disc 31 and extends towards the bottom of the grinding cavity 21. The output shaft of the driving motor 33 passes through the bottom of the grinding box 2 and extends into the grinding cavity 21. The rotating shaft 342 is sleeved outside the output shaft 333 of the driving motor 33. The inner wall of the rotating shaft 342 has a non-circular surface 3421, and the outer wall of the output shaft 333 of the driving motor 33 is provided with a non-circular contact surface 332 that cooperates with the non-circular surface 3421. Since the rotating shaft 342 is sleeved outside the output shaft 333 of the driving motor 33, the inner wall of the rotating shaft 342 has a non-circular surface 3421, and the outer wall of the output shaft 333 of the driving motor 33 is provided with a non-circular contact surface 332 that cooperates with the non-circular surface 3421, the contact surface between the rotating shaft 342 and the output shaft 333 of the driving motor 33 contains a non-circular part, so that the rotating shaft 342 rotates along with the output shaft 333 of the driving motor 33, and the rotating shaft 342 will not rotate relative to the output shaft 333 of the driving motor 33. It is precisely because the rotating shaft 342 of the bracket 34 is sleeved outside the output shaft 333 of the driving motor 33 and the rotating shaft 342 is not fixedly connected to the output shaft 333 of the driving motor 33, and the moving grinding disc 32 is fixed to the bottom surface of the body part 341 of the bracket 34. When cleaning is required, the bracket 34 can be directly pulled out from the grinding cavity 21, and the bracket 34 together with the moving grinding disc 32 is removed, which is convenient for cleaning the moving grinding disc 32. Moreover, after the bracket 34 and the moving grinding disc 32 are removed, the grinding cavity 21 and the fixed grinding disc 31 inside the grinding cavity 21 can be cleaned to avoid affecting the grinding effect;

[0038] Since the top of the housing 1 has an opening, the grinding box 2 is installed at the opening of the housing 1 and the grinding box 2 has a grinding cavity 21 with an upper opening, and the opening of the grinding cavity 21 is located at the top opening of the housing 1, which is convenient for removing the bracket 34 and the moving grinding disc 32.

[0039] In this embodiment, refer to Figure 3 and Figure 4 , the upper end of the output shaft 333 of the driving motor 33 is hexagonal, the upper end of the inner cavity of the rotating shaft 342 is hexagonal, and the upper end of the output shaft 333 of the driving motor 33 is inserted into the upper end of the inner cavity of the rotating shaft 342. In fact, the upper end of the output shaft 333 of the driving motor 33 and the upper end of the inner cavity of the rotating shaft 342 are not limited to hexagonal shapes, and shapes such as rhombus, rectangle, heart shape, and special shape can be selected.

[0040] Preferably, referring to Figure 1 、 Figure 5 and Figure 6 , the detachable and washable coffee grinder further includes an adjusting assembly 4 for adjusting the fineness of the ground powder. The adjusting assembly 4 includes a rotary cover 41, a lifting member 42 and a fixing member 43. The fixing member 43 is connected to the top surface of the grinding box 2 by screws 46. The number of screws 46 is not limited. In this embodiment, the fixing member 43 is connected to the grinding box 2 by four screws 46. The rotary cover 41 covers the top of the fixing member 43 and protrudes from the opening of the machine shell 1. The lifting member 42 is installed at the center of the inner top surface of the rotary cover 41. A threaded hole 431 is provided at the center of the fixing member 43. The middle part of the lifting member 42 is screwed into the threaded hole 431. The lower end of the lifting member 42 abuts against the top surface of the bracket 34. The upper end of the output shaft of the driving motor 33 has a cavity 331 with an upper opening. A spring 35 is provided in the cavity 331 to always press the bracket 34 against the adjusting assembly 4. When the rotary cover 41 rotates, it drives the lifting member 42 to rotate relative to the fixing member 43 to drive the bracket 34 to move up and down, thereby adjusting the distance between the fixed grinding disc 31 and the moving grinding disc 32. The spring 35 can always press the bracket 34 against the adjusting assembly 4 to ensure that the adjusting assembly 4 can drive the bracket 34 to move up and down to adjust the distance between the fixed grinding disc 31 and the moving grinding disc 32. The greater the distance between the fixed grinding disc 31 and the moving grinding disc 32, the coarser the ground coffee powder; the smaller the distance between the fixed grinding disc 31 and the moving grinding disc 32, the finer the ground coffee powder.

[0041] Since the spring 35 is arranged in the cavity 331 of the output shaft of the driving motor 33 and the rotating shaft 342 is sleeved outside the output shaft 333 of the driving motor 33, the spring 35 can be hidden inside the rotating shaft 342, which can prevent the spring 35 from contacting the coffee powder in the grinding chamber 21, thereby keeping the spring 35 clean and reducing the cleaning difficulty of the coffee grinder.

[0042] The fixing member 43 is threadedly connected to the lifting member 42 through its threaded hole 431, which can ensure the stability of the lifting of the lifting member 42. When the rotary cover 41 rotates, the lifting member 42 located at the center of the inner top surface of the rotary cover 41 rotates with the rotary cover 41. Under the cooperation of the threaded hole 431 of the fixing member 43, the lifting member 42 moves up and down relative to the fixing member 43 while rotating, and at the same time, the lifting member 42 drives the bracket 34 to move up and down to adjust the distance between the fixed grinding disc 31 and the moving grinding disc 32. When in use, first rotate the rotary cover 41 according to the brewing method and personal taste requirements. The rotary cover 41 drives the bracket 34 to move up and down through the lifting member 42 to adjust the distance between the fixed grinding disc 31 and the moving grinding disc 32. Then put coffee beans into the grinding chamber 21 and start the driving motor 33. The driving motor 33 drives the bracket 34 and the moving grinding disc 32 arranged on the bracket 34 to rotate, and coffee powder is formed under the grinding action of the moving grinding disc 32 and the fixed grinding disc 31.

[0043] Preferably, referring toFigures 5 to 7 Moreover, the adjusting assembly 4 further includes a chuck 44 disposed inside the screw cap 41. A clamping hole 441 is formed in the middle of the chuck 44. The upper end of the lifting member 42 is clamped in the clamping hole 441. A plurality of clamping teeth 442 are provided on the side wall of the chuck 44, and a clamping strip 411 is provided on the inner wall of the screw cap 41. The clamping strip 411 is clamped in the space between two adjacent clamping teeth 442. The clamping strip 411 is clamped in the space between two adjacent clamping teeth 442, and a clamping groove is formed between two adjacent clamping teeth 442. The clamping strip 411 is clamped in the clamping groove to fix the chuck 44 and the screw cap 41 to each other. The chuck 44 and the lifting member 42 are fixed to each other, which can prevent the lifting member 42 from not rotating when the screw cap 41 rotates, so as to ensure that the screw cap 41 can drive the chuck 44 and the lifting member 42 to rotate when rotating.

[0044] Preferably, referring to Figure 1 and Figures 5 to 7 ,the adjusting assembly 4 further includes a mating ring 45 disposed between the lifting member 42 and the bracket 34. A central portion of the bottom surface of the lifting member 42 extends downward to form an extension portion 421. The extension portion 421 extends into the inner hole of the mating ring 45. The top surface of the mating ring 45 abuts against the bottom surface of the lifting member 42, and the bottom surface of the mating ring 45 abuts against the top surface of the bracket 34. During the rotation and vertical movement of the lifting member 42, the mating ring 45 does not rotate, but the mating ring 45 will move up and down with the lifting member 42 under the action of the spring 35, which can prevent the lifting member 42 from directly abutting against the bracket 34 and causing the bracket 34 to be worn.

[0045] In this embodiment, referring to Figure 5 and Figure 6 ,the adjusting assembly 4 further includes a bolt 47. The bolt 47 passes through the screw cap 41 and is screwed to the lifting member 42 to mount the lifting member 42 at the center of the inner top surface of the screw cap 41. In order to hide the bolt 47, a cover plate 48 can be provided on the top surface of the screw cap 41 to cover the bolt 47. The cover plate 48 is clamped on the top surface of the screw cap 41 for convenient installation.

[0046] When cleaning is required, first remove the screw 46 on the fixing member 43 to separate the fixing member 43 from the top surface of the grinding box 2, and then directly lift the screw cap 41 to remove the entire adjusting assembly 4. Subsequently, directly pull out the bracket 34 from the grinding cavity 21, and the bracket 34 together with the moving grinding disc 32 is removed, which is convenient for cleaning the moving grinding disc 32. The removed adjusting assembly 4 and bracket 34 are shown in Figure 9 ,and after the bracket 34 and the moving grinding disc 32 are removed, the grinding cavity 21 and the fixed grinding disc 31 in the grinding cavity 21 can be cleaned to avoid affecting the grinding effect.

[0047] Preferably, as shown in Figure 2 and Figures 4 to 6 and Figure 10As shown in the figure, a limiting groove 432 is provided on the fixing member 43 and below the threaded hole 431. The limiting groove 432 communicates with the threaded hole 431. An anti - detachment member 433 is provided in the limiting groove 432. A limiting ring 3411 protrudes upward from the top surface of the main body portion 341. The fitting ring 45 is located inside the limiting ring 3411. The top of the limiting ring 3411 extends into the limiting groove 432. The limiting ring 3411 can move up and down in the limiting groove 432 to facilitate adjusting the grinding fineness of coffee powder. A convex portion 34111 is provided on the top side wall of the limiting ring 3411. The convex portion 34111 is located above the anti - detachment member 433. A groove 3412 is formed between the convex portion 34111 and the top surface of the main body portion 341. A part of the anti - detachment member 433 extends into the groove 3412. Due to the setting of the convex portion 34111 and the anti - detachment member 433, a part of the anti - detachment member 433 extends into the groove 3412 formed between the convex portion 34111 and the top surface of the main body portion 341. The groove 3412 restricts the fixing member 43 and the bracket 34 from separating from each other. When the fixing member 43 moves upward, the bracket 34 can be taken out simultaneously through the anti - detachment member 433 and the groove 3412, reducing the steps of disassembling the adjusting assembly 4 and the bracket 34, and making it more convenient to use. When cleaning is required, first remove the screw 46 on the fixing member 43 to separate the fixing member 43 from the top surface of the grinding box 2, and then directly lift the rotary cover 41 to take out the entire adjusting assembly 4 together with the bracket 34 and the moving grinding disc 32, which is convenient for cleaning the moving grinding disc 32. For the disassembled adjusting assembly 4 and bracket 34, see Figure 12 Moreover, after the bracket 34 and the moving grinding disc 32 are disassembled, the grinding chamber 21 and the stationary grinding disc 31 in the grinding chamber 21 can be cleaned to avoid affecting the grinding effect. The fitting ring 45 is located inside the limiting ring 3411, providing an installation position for the fitting ring 45 and at the same time restricting the moving space of the fitting ring 45 to prevent the fitting ring 45 from moving randomly.

[0048] In this embodiment, the convex portion 34111 is an annular flange provided on the top side wall of the fitting ring 45. A clamping groove 434 is provided on the groove wall of the limiting groove 432, as Figure 11 shown. The anti - detachment member 433 is a special - shaped ring. The special - shaped ring includes a plurality of straight segments 4331 and a plurality of arc segments 4332. The arc segments 4332 and the straight segments 4331 are connected in sequence to form a ring. The straight segments 4331 extend into the groove 3412, and the arc segments 4332 are clamped in the clamping groove 434. The arc segments 4332 of the special - shaped ring are clamped in the clamping groove 434, and the straight segments 4331 of the special - shaped ring extend into the groove 3412 to restrict the fixing member 43 and the bracket 34 from separating from each other. In this embodiment, the special - shaped ring has a notch, which is convenient for the forming and manufacturing of the special - shaped ring.

[0049] Preferably, see Figure 5 、 Figure 6 and Figure 13The adjustment assembly 4 further includes an annular decorative cover 49, which is sleeved outside the fixing member 43, the bottom of the rotary cover 41 is located inside the ring of the decorative cover 49, and the outer wall of the decorative cover 49 is aligned with the outer wall of the housing 1. The setting of the decorative cover 49 covers the gap between the rotary cover 41 and the fixing member 43 to prevent water from entering, and the outer wall of the decorative cover 49 is aligned with the outer wall of the housing 1, making the appearance of the grinder more neat.

[0050] Preferably, in order to prevent the decorative cover 49 from falling off, one of the contact surfaces of the decorative cover 49 and the fixing member 43 is provided with a strong magnet 491, and the other is provided with a magnetized material attracted to the strong magnet 491. Figure 5 and Figure 13 As shown, the strong magnet 491 is arranged on the decorative cover 49, and the fixing part 43 is made of a magnetized material that attracts the strong magnet 491, so that the decorative cover 49 and the fixing part 43 attract each other, so that the decorative cover 49 can be stably sleeved outside the fixing part 43, and the decorative cover 49 is convenient to remove. In other embodiments, the strong magnet can be arranged on the fixing part 43, and the decorative cover 49 is made of a magnetized material that attracts the strong magnet, so that the decorative cover 49 and the fixing part 43 can also attract each other. In addition, strong magnets can be arranged on both the decorative cover 49 and the fixing part 43, which can also make the decorative cover 49 and the fixing part 43 attract each other.

[0051] When cleaning is required, first remove the decorative cover 49, then remove the screws 46 on the fixing part 43 to separate the fixing part 43 from the top surface of the grinding box 2, then remove the adjusting assembly 4 and the bracket 34 in turn or directly lift the rotary cover 41 to take out the entire adjusting assembly 4 together with the bracket 34 and the movable grinding disc 32, and the grinding disc can be cleaned at this time.

[0052] Preferably, see Figure 8 and Figure 13 The fixing member 43 is provided with a recessed opening 435, and the inner side of the decorative cover 49 is provided with a positioning column 492 adapted to the recessed opening 435, and the positioning column 492 is inserted into the recessed opening 435. By providing the positioning column 492 and the recessed opening 435, the alignment installation of the fixing member 43 and the decorative cover 49 is facilitated.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable and cleanable coffee grinder, characterized in that it includes a housing with an opening at the top, a grinding box installed at the opening of the housing, and a grinding assembly located inside the housing. The grinding box has a grinding chamber with an upper opening. The grinding assembly includes a fixed grinding disc, a moving grinding disc, a bracket, and a driving motor. The fixed grinding disc is fixed inside the grinding chamber. The bracket has a body part and a rotating shaft protruding from the bottom surface of the body part. The body part is placed inside the grinding chamber. The moving grinding disc is fixed to the bottom surface of the body part and is located above the fixed grinding disc. The rotating shaft passes through the moving grinding disc and the fixed grinding disc and extends towards the bottom of the grinding chamber. The output shaft of the driving motor passes through the bottom of the grinding box and extends into the grinding chamber. The rotating shaft is sleeved outside the output shaft of the driving motor. The inner wall of the rotating shaft has a non-circular surface, and the outer wall of the output shaft of the driving motor is provided with a non-circular contact surface that cooperates with the non-circular surface.

2. The detachable and cleanable coffee grinder according to claim 1, characterized in that the upper end of the output shaft of the driving motor is hexagonal, the upper end of the inner cavity of the rotating shaft is hexagonal, and the upper end of the output shaft of the driving motor is inserted into the upper end of the inner cavity of the rotating shaft.

3. The detachable and cleanable coffee grinder according to claim 1, characterized in that it further includes an adjusting assembly. The adjusting assembly includes a rotary cover, a lifting member, and a fixing member. The fixing member is connected to the top surface of the grinding box by screws. The rotary cover covers the top of the fixing member and protrudes from the opening of the housing. The lifting member is installed at the center of the inner top surface of the rotary cover. A threaded hole is provided at the center of the fixing member. The middle part of the lifting member is screwed into the threaded hole. The lower end of the lifting member abuts against the top surface of the bracket. The upper end of the output shaft of the driving motor has a cavity with an upper opening. A spring is provided inside the cavity to always press the bracket towards the adjusting assembly. When the rotary cover rotates, it drives the lifting member to rotate relative to the fixing member to drive the bracket to move up and down, thereby adjusting the distance between the fixed grinding disc and the moving grinding disc.

4. The detachable and cleanable coffee grinder according to claim 3, characterized in that the adjusting assembly further includes a chuck provided inside the rotary cover. A clamping hole is provided in the middle of the chuck. The upper end of the lifting member is clamped in the clamping hole. A plurality of clamping teeth are provided on the side wall of the chuck. A clamping strip is provided on the inner wall of the rotary cover. The clamping strip is clamped in the space between two adjacent clamping teeth.

5. The detachable and cleanable coffee grinder according to claim 3, characterized in that the adjusting assembly further includes a mating ring provided between the lifting member and the bracket. An extension part extends downward from the middle of the bottom surface of the lifting member. The extension part extends into the inner hole of the mating ring. The top surface of the mating ring abuts against the bottom surface of the lifting member. The bottom surface of the mating ring abuts against the top surface of the bracket.

6. The detachable and cleanable coffee grinder according to claim 5, characterized in that A limiting groove is provided on the fixing member and below the threaded hole. The limiting groove communicates with the threaded hole. An anti - detachment member is provided in the limiting groove. The top surface of the body portion protrudes upward to form a limiting ring. The fitting ring is located within the ring of the limiting ring. The top of the limiting ring extends into the limiting groove. A convex portion is provided on the side wall of the top of the limiting ring. The convex portion is located above the anti - detachment member. A groove is formed between the convex portion and the top surface of the body portion. The anti - detachment member partially extends into the groove.

7. The detachable - cleaning coffee grinder according to claim 6, wherein The convex portion is an annular flange provided on the side wall of the top of the fitting ring. A clamping groove is provided on the groove wall of the limiting groove. The anti - detachment member is a special - shaped ring. The special - shaped ring includes a plurality of straight segments and a plurality of arc segments. The arc segments and the straight segments are connected in sequence to form a ring. The straight segments extend into the groove. The arc segments are clamped in the clamping groove.

8. The detachable - cleaning coffee grinder according to claim 3, wherein The adjusting assembly further includes an annular decorative cover. The decorative cover is sleeved outside the fixing member. The bottom of the rotary cover is located within the ring of the decorative cover. The outer wall of the decorative cover is aligned with the outer wall of the housing.

9. The detachable - cleaning coffee grinder according to claim 8, wherein Among the contact surfaces of the decorative cover and the fixing member, one is provided with a strong magnet, and the other is provided with a magnetized substance attracted to the strong magnet.

10. The detachable - cleaning coffee grinder according to claim 8, wherein A recessed opening is provided on the fixing member. A positioning post adapted to the recessed opening is provided on the inner side of the decorative cover. The positioning post is inserted into the recessed opening.

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