Manual coffee grinder with self-locking structure

Abstract

The manual coffee grinder with the self-locking structure comprises a cylinder, two positioning supports are fixed in the cylinder, a rotating shaft is inserted into the two positioning supports in a penetrating mode, fan blades, a grinding wheel and an adjusting spacer are connected to the outer wall of the rotating shaft in a sleeved mode, the fan blades are arranged at the tops of the two supports, the grinding wheel is arranged at the bottoms of the two supports, and the adjusting spacer is arranged on the outer wall of the rotating shaft. The bottom end of the rotating shaft is connected with a fixed knob, the adjusting spacer is arranged between the adjusting spacer and the fixed knob, an inner grinding cylinder is fixed on the inner wall of the cylinder body, the grinding wheel is arranged in the inner grinding cylinder, the bottom end of the cylinder body is connected with a material receiving cylinder, and a manual grinding mechanism is inserted into the top end of the cylinder body and the top end of the rotating shaft. When the manual grinding mechanism is in butt joint with the rotating shaft, the self-locking assembly is inserted into the clamping groove, so that the sealing cover is positioned and seals the top of the cylinder body, and meanwhile, the whole manual grinding mechanism is positioned in the axial direction of the cylinder body, so that the manual grinding mechanism is effectively prevented from being separated from the cylinder body when coffee beans are ground through manual rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee grinders, in particular to a manual coffee grinder with a self-locking structure. Background Art

[0002] Ground coffee is a kind of coffee powder obtained by traditional grinding methods. During the grinding process, the grinding gap can be controlled to obtain coffee powder of different particle sizes to meet different taste requirements. A coffee grinder is a device used to grind coffee beans into powder suitable for brewing. There are also many types of coffee grinders. Although electric coffee grinders are easy to operate, manual coffee grinders with cylindrical structures are often used for portability. They take up little space and do not require electricity, making them suitable for outdoor use.

[0003] Currently, this type of manual grinder, which is small in size and easy to carry, has a main body of a cylinder structure, a material receiving cylinder connected to the bottom of the cylinder, and a grinding structure assembled and arranged inside the cylinder. The driving structure is mainly a rocker. During manual grinding, the rocker is inserted into the rotating shaft of the grinding structure. However, when this type of manual coffee grinder is ground by shaking the rocker, the rocker is easily separated from the rotating shaft during rotation, causing the ground coffee powder to spill out, thereby reducing the stability of coffee grinding.

[0004] In summary, there is a need for a manual coffee grinder that can grind coffee powder stably. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a manual coffee grinder with a self-locking structure, which solves the problems mentioned in the background technology.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A manual coffee grinder with a self-locking structure comprises a cylinder, two positioning brackets are fixed inside the cylinder, a rotating shaft is inserted through the two positioning brackets, a fan blade, a grinding wheel and an adjusting spacer are sleeved on the outer wall of the rotating shaft, the fan blade is arranged at the top of the two brackets, the grinding wheel is arranged at the bottom of the two brackets, a fixing knob is connected to the bottom end of the rotating shaft, the adjusting spacer is arranged between the adjusting spacer and the fixing knob, an inner grinding cylinder is fixed to the inner wall of the cylinder, the grinding wheel is arranged inside the inner grinding cylinder, a material receiving cylinder is connected to the bottom end of the cylinder, a manual grinding mechanism is inserted inside the top end of the cylinder, and a manual grinding mechanism is inserted at the top end of the rotating shaft;

[0008] The manual grinding mechanism includes a rotating column, a rocker, a sealing cover and a self-locking component. A rotating shaft is inserted into the bottom end of the rotating column, a sealing cover is fixedly sleeved on the outer wall of the rotating column, the sealing cover is inserted into the inside of the cylinder, a rocker is connected to the side wall of the rotating column, a self-locking component is sleeved on the side wall of the bottom of the rotating column, a slot is opened on the inner wall of the cylinder, and one side of the self-locking component is elastically clamped in the slot.

[0009] Furthermore, the self-locking component includes a mounting ring, a fixing bolt, an elastic sheet, a card block and an oblique push block. The mounting ring is sleeved on the outer wall of the bottom end of the rotating column, and a fixing bolt is connected through the inside of the mounting ring. One end of the fixing bolt is connected to the inside of the rotating column. A slot is provided on the side wall of the mounting ring, and two slots are mirrored. Two second sliding interfaces are provided on the top surface of the mounting ring, and two first sliding interfaces are provided inside the sealing cover. The slot, the second sliding interface and the inside of the first sliding interface are through-connected. A card block is inserted into the slot, and an oblique push block is fixed on the top surface of the card block. The oblique push block is slidably connected to the inside of the first sliding interface and the second sliding interface. An elastic sheet is inserted into the slot, and one side of the elastic sheet fits against the side wall of the card block.

[0010] Furthermore, the bottom surface of the card block on one side close to the card slot is a chamfered structure.

[0011] Furthermore, an oblique protrusion is fixed inside the slot, and the oblique protrusion is a right-angled trapezoidal structure. Multiple oblique protrusions are arranged along the circumferential direction of the slot, and the side of the block close to the slot is a chamfered structure parallel to the right-angled trapezoidal inclined surface of the oblique protrusion.

[0012] Furthermore, the manual grinding mechanism also includes an unlocking component, which is connected to the top of the cylinder. The unlocking component unlocks by pushing the oblique push block to pull the card block out of the card slot.

[0013] Furthermore, the unlocking component includes a pressing cover, a plug post, a connecting plate, a sliding cover and a spring, the bottom end of the plug post is connected to the spring, the plug post is inserted into the inside of the rotating post, the bottom end of the spring is connected to the inside of the rotating post, a pressing cover is fixed to the top of the plug post, a connecting plate is fixed to the side wall of the pressing cover, two connecting plates are arranged in a mirror image, and sliding covers are fixed on the bottom surfaces of the two connecting plates. The two sliding covers are arranged in a mirror image, the bottom surface of the sliding cover is an inclined structure, a sliding groove is opened on the bottom surface of the sliding cover, the top surface of the inclined push block is an inclined structure, and the top surface of the inclined push block slides and fits in the sliding groove.

[0014] The utility model provides a manual coffee grinder with a self-locking structure. Compared with the prior art, it has the following beneficial effects:

[0015] 1. When the manual grinding mechanism is connected to the rotating shaft, the self-locking component is inserted into the card slot to position the sealing cover on the top of the sealing cylinder. At the same time, the manual grinding mechanism is positioned in the axial direction of the cylinder as a whole, thereby effectively preventing the manual grinding mechanism from being separated from the cylinder when the coffee beans are manually rotated and ground, thereby ensuring the stability and safety of manually grinding coffee;

[0016] 2. The card block is first elastically put into the slot, and then the elastic sheet is used to push the card block outward and insert it into the slot, so as to achieve self-locking. When unlocking, only the inclined push block is needed on the sealing cover to complete the unlocking of the card block and the cylinder body. The unlocking operation is simple.

[0017] 3. When the coffee beans are ground in a normal clockwise rotation, the block slides inside the slot, passes through the inclined surface of the inclined convex block, and remains inserted into the slot, ensuring normal rotation and grinding while also allowing the block to move inside the slot, thereby generating vibrations that vibrate the coffee powder down into the receiving barrel;

[0018] When the grinding is performed counterclockwise by mistake, the block is stopped by the inclined protrusion, thereby realizing the reverse rotation self-locking function, effectively avoiding wear and damage of the grinding wheel and inner grinding cylinder at the bottom, and improving the safety of grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The schematic diagram of the structure of the manual coffee grinder with a self-locking structure of the utility model is shown;

[0021] Figure 2 An exploded view of the overall structure of the utility model is shown;

[0022] Figure 3 An exploded diagram of the manual grinding mechanism structure of the utility model is shown;

[0023] Figure 4 The figure shows the internal structure of the manual grinding mechanism of the utility model;

[0024] Figure 5 The utility model shows a cross-sectional view of the internal structure of the cylinder;

[0025] Figure 6 It shows a structural schematic diagram of the state where the clamping block of the utility model is fitted through the oblique protrusion;

[0026] As shown in the figure: 1. Material receiving barrel; 2. Cylinder body; 21. Positioning bracket; 22. Slot; 23. Oblique protrusion; 24. Inner grinding barrel; 3. Manual grinding mechanism; 31. Rotating column; 32. Rocker; 33. Sealing cover; 331. First sliding interface; 34. Self-locking component; 341. Mounting ring; 3411. Slot; 3412. Second sliding interface; 342. Fixing bolt; 343. Elastic sheet; 344. Block; 345. Oblique push block; 35. Unlocking component; 351. Press cover; 352. Insert column; 353. Connecting plate; 354. Push cover; 3541. Push slot; 355. Spring; 4. Fan blade; 5. Rotating shaft; 51. Positioning block; 6. Grinding wheel; 7. Adjusting spacer; 8. Fixing knob. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] In order to solve the technical problems in the background technology, the following manual coffee grinder with a self-locking structure is provided:

[0030] Combination Figure 1-Figure 6 As shown, the manual coffee grinder with a self-locking structure provided by the utility model comprises a cylinder 2, two positioning brackets 21 are fixed inside the cylinder 2, a rotating shaft 5 is inserted and connected inside the two positioning brackets 21, a fan blade 4, a grinding wheel 6 and an adjusting spacer 7 are sleeved on the outer wall of the rotating shaft 5, the fan blade 4 is arranged at the top of the two brackets, the grinding wheel 6 is arranged at the bottom of the two brackets, a fixing knob 8 is connected to the bottom end of the rotating shaft 5, the adjusting spacer 7 is arranged between the adjusting spacer 7 and the fixing knob 8, an inner grinding cylinder 24 is fixed to the inner wall of the cylinder 2, the grinding wheel 6 is arranged inside the inner grinding cylinder 24, a material receiving cylinder 1 is connected to the bottom end of the cylinder 2, a manual grinding mechanism 3 is inserted inside the top end of the cylinder 2, and a manual grinding mechanism 3 is inserted at the top end of the rotating shaft 5;

[0031] The manual grinding mechanism 3 includes a rotating column 31, a rocker 32, a sealing cover 33 and a self-locking component 34. The bottom end of the rotating column 31 is plugged with a rotating shaft 5, the outer wall of the rotating column 31 is sleeved and fixed with a sealing cover 33, the sealing cover 33 is inserted into the inside of the cylinder 2, the side wall of the rotating column 31 is connected to the rocker 32, the bottom side wall of the rotating column 31 is sleeved with a self-locking component 34, the inner wall of the cylinder 2 is provided with a card slot 22, and one side of the self-locking component 34 is elastically snapped into the inside of the card slot 22;

[0032] According to the above structure, the following effects can be achieved: when the manual grinding mechanism 3 is docked with the rotating shaft 5, the self-locking component 34 is inserted into the slot 22, so that the sealing cover 33 is positioned to seal the top of the cylinder 2, and the manual grinding mechanism 3 is positioned as a whole in the axial direction of the cylinder 2, thereby effectively avoiding separation from the cylinder 2 when manually rotating the coffee beans, thereby ensuring the stability and safety of manually grinding coffee.

[0033] In this embodiment, the self-locking assembly 34 includes a mounting ring 341, a fixing bolt 342, an elastic sheet 343, a block 344 and an inclined push block 345. The mounting ring 341 is sleeved on the outer wall of the bottom end of the rotating column 31. The fixing bolt 342 is connected to the inside of the mounting ring 341. One end of the fixing bolt 342 is connected to the inside of the rotating column 31. The side wall of the mounting ring 341 is provided with a slot 3411. Two slots 3411 are mirrored. The top surface of the mounting ring 341 is provided with two second sliding interfaces 341 2. Two first sliding interfaces 331 are provided inside the sealing cover 33. The slot 3411, the second sliding interface 3412 and the first sliding interface 331 are connected through each other. A card block 344 is inserted into the slot 3411. An oblique push block 345 is fixed to the top surface of the card block 344. The oblique push block 345 is slidably connected to the first sliding interface 331 and the second sliding interface 3412. An elastic sheet 343 is inserted into the slot 3411. One side of the elastic sheet 343 is attached to the side wall of the card block 344.

[0034] Self-locking is achieved by first elastically collecting the card block 344 into the slot 3411, and then using the elastic sheet 343 to push the card block 344 outward and insert it into the card slot 22. When unlocking, it is only necessary to push the inclined push block 345 on the sealing cover 33 to complete the unlocking of the card block 344 and the cylinder 2. The unlocking operation is simple.

[0035] In this embodiment, the bottom surface of the clamping block 344 close to the clamping slot 22 is a chamfered structure;

[0036] When the self-locking assembly 34 is inserted into the cylinder 2, the oblique push block 345 is more easily squeezed into the cylinder 2 by the chamfered structure, thereby improving the convenience of clamping.

[0037] Embodiment 2

[0038] like Figure 3-Figure 6 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0039] An oblique protrusion 23 is fixed inside the slot 22. The oblique protrusion 23 is a right-angled trapezoidal structure. A plurality of oblique protrusions 23 are arranged along the circumference of the slot 22. The side of the block 344 close to the slot 22 is a chamfered structure parallel to the right-angled trapezoidal inclined surface of the oblique protrusion 23.

[0040] When the coffee beans are ground in a normal clockwise rotation, the block 344 slides inside the slot 22, passes through the inclined surface of the inclined protrusion 23, and remains inserted into the slot 22, ensuring normal rotation and grinding while also allowing the block 344 to move inside the slot 3411, thereby generating vibrations to vibrate the coffee powder and drop it into the receiving barrel 1;

[0041] When the grinding is performed counterclockwise by mistake, the block 344 is stopped by the inclined protrusion 23, thereby realizing the reverse rotation self-locking function, effectively avoiding the wear and damage of the grinding wheel 6 and the inner grinding cylinder 24 at the bottom, and improving the safety of grinding.

[0042] In this embodiment, the manual grinding mechanism 3 further includes an unlocking assembly 35 , which is connected to the top of the cylinder 2 . The unlocking assembly 35 unlocks by pushing the oblique push block 345 to pull the clamping block 344 out of the clamping slot 22 .

[0043] In this embodiment, the unlocking assembly 35 includes a pressing cover 351, a plug post 352, a connecting plate 353, a sliding cover 354 and a spring 355. The bottom end of the plug post 352 is connected to the spring 355, the plug post 352 is inserted into the inside of the rotating column 31, the bottom end of the spring 355 is connected to the inside of the rotating column 31, the top of the plug post 352 is fixed with a pressing cover 351, the side wall of the pressing cover 351 is fixed with a connecting plate 353, two connecting plates 353 are arranged in a mirror image, the bottom surfaces of the two connecting plates 353 are fixed with sliding covers 354, the two sliding covers 354 are arranged in a mirror image, the bottom surface of the sliding cover 354 is an inclined structure, the bottom surface of the sliding cover 354 is provided with a sliding groove 3541, the top surface of the inclined push block 345 is an inclined structure, and the top surface of the inclined push block 345 slides and fits in the sliding groove 3541;

[0044] By fitting the top surface of the inclined push block 345 into the sliding groove 3541 of the sliding cover 354, when unlocking, only the pressing cover 351 needs to be pressed to simultaneously unlock the two card blocks 344, thereby further improving the convenience of the unlocking operation.

[0045] The working principle and use process of this utility model:

[0046] Press first Figure 1-Figure 6 Insert the rotating shaft 5 into the positioning bracket 21, and assemble the fan blade 4, the grinding wheel 6, the adjusting spacer 7 and the fixing knob 8 onto the rotating shaft 5, then connect the receiving barrel 1 to the bottom of the barrel 2, and then put the coffee beans into the barrel 2;

[0047] Then, the rotating column 31 of the manual grinding mechanism 3 is inserted on the rotating shaft 5, so that the sealing cover 33 is inserted and sealed into the cylinder 2, and the clamping block 344 is clamped into the clamping groove 22, so that the manual grinding mechanism 3, the rotating shaft 5 and the cylinder 2 are assembled and positioned, and then the rocker 32 is shaken to make the rotating shaft 5 drive the grinding wheel 6 to grind the coffee beans, and the ground coffee powder flows downward into the receiving cylinder 1 through the gap between the adjusting spacer 7 and the inner grinding cylinder 24;

[0048] During the grinding process, the block 344 slides inside the slot 22. When the block 344 passes through the oblique protrusion 23, the chamfered structure is used to fit the inclined surface of the oblique protrusion 23. A part of the block 344 is inserted back into the slot 3411 to pass through the oblique protrusion 23 and compress the elastic sheet 343. After passing through the oblique protrusion 23, the elastic sheet 343 pushes the block 344 out again, and the block 344 is inserted into the slot 22 again to keep the axial positioning of the manual grinding mechanism 3 inside the cylinder 2. At the same time, each time the block 344 passes through the oblique protrusion 23, the block 344 collides with the slot 22, causing the cylinder 2 to vibrate, thereby promoting the ground coffee powder to enter the receiving barrel 1.

[0049] After grinding is completed, the rotating material receiving barrel 1 is separated from the barrel 2 to take out the coffee powder, and then the pressing cover 351 is pressed downward, and the two sliding covers 354 respectively push the two inclined push blocks 345 to slide inside the first sliding opening and the second sliding interface 3412 at the same time, so that the blocking block 344 is retracted into the slot 3411, and the blocking block 344 is separated from the slot 22, and then the rotating column 31 is lifted upward to separate it from the rotating shaft 5, so that the sealing cover 33 opens the top opening of the barrel 2 to continue adding coffee beans for grinding.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A manual coffee grinder with a self-locking structure, characterized in that: The invention comprises a cylinder (2), wherein two positioning brackets (21) are fixed inside the cylinder (2), a rotating shaft (5) is inserted into the inside of the two positioning brackets (21), a fan blade (4), a grinding wheel (6) and an adjusting spacer (7) are sleeved on the outer wall of the rotating shaft (5), the fan blade (4) is arranged at the top of the two brackets, the grinding wheel (6) is arranged at the bottom of the two brackets, the bottom end of the rotating shaft (5) is connected to a fixed knob (8), the adjusting spacer (7) is arranged between the adjusting spacer (7) and the fixed knob (8), an inner grinding cylinder (24) is fixed to the inner wall of the cylinder (2), the grinding wheel (6) is arranged inside the inner grinding cylinder (24), the bottom end of the cylinder (2) is connected to a material receiving cylinder (1), a manual grinding mechanism (3) is inserted into the top end of the cylinder (2), and the top end of the rotating shaft (5) is inserted into the manual grinding mechanism (3); The manual grinding mechanism (3) comprises a rotating column (31), a rocking arm (32), a sealing cover (33) and a self-locking component (34); the bottom end of the rotating column (31) is plugged with a rotating shaft (5); the outer wall of the rotating column (31) is sleeved and fixed with a sealing cover (33); the sealing cover (33) is inserted into the inside of the cylinder (2); the side wall of the rotating column (31) is connected with a rocking arm (32); the bottom side wall of the rotating column (31) is sleeved with a self-locking component (34); the inner wall of the cylinder (2) is provided with a slot (22); one side of the self-locking component (34) is elastically snapped into the inside of the slot (22).

2. The manual coffee grinder with a self-locking structure according to claim 1, characterized in that: The self-locking component (34) comprises a mounting ring (341), a fixing bolt (342), an elastic sheet (343), a clamping block (344) and an inclined push block (345); the mounting ring (341) is sleeved on the outer wall of the bottom end of the rotating column (31); the mounting ring (341) is connected with a fixing bolt (342) running through the interior of the mounting ring (341); one end of the fixing bolt (342) is connected to the interior of the rotating column (31); a slot (3411) is provided on the side wall of the mounting ring (341); two slots (3411) are provided in mirror image; and two second sliding interfaces (3412) are provided on the top surface of the mounting ring (341). The sealing cover (33) has two first sliding interfaces (331) formed inside, the slot (3411), the second sliding interface (3412) and the inside of the first sliding interface (331) are connected through each other, a card block (344) is inserted into the slot (3411), an inclined push block (345) is fixed on the top surface of the card block (344), the inclined push block (345) is slidably connected to the first sliding interface (331) and the inside of the second sliding interface (3412), an elastic sheet (343) is inserted into the slot (3411), and one side of the elastic sheet (343) is attached to the side wall of the card block (344).

3. The manual coffee grinder with a self-locking structure according to claim 2, characterized in that: The bottom surface of the clamping block (344) on one side close to the clamping slot (22) is a chamfered structure.

4. The manual coffee grinder with a self-locking structure according to claim 3, characterized in that: An oblique protrusion (23) is fixed inside the slot (22), the oblique protrusion (23) is a right-angled trapezoidal structure, a plurality of oblique protrusions (23) are arranged along the circumferential direction of the slot (22), and the side of the block (344) close to the slot (22) is a chamfered structure parallel to the right-angled trapezoidal inclined surface of the oblique protrusion (23).

5. The manual coffee grinder with a self-locking structure according to claim 4, characterized in that: The manual grinding mechanism (3) further comprises an unlocking assembly (35), wherein the unlocking assembly (35) is connected to the top of the cylinder (2), and the unlocking assembly (35) unlocks the locking block (344) by pushing the inclined push block (345) to remove the locking block (344) from the inside of the locking slot (22).

6. The manual coffee grinder with a self-locking structure according to claim 5, characterized in that: The unlocking assembly (35) comprises a pressing cover (351), a plug post (352), a connecting plate (353), a sliding cover (354) and a spring (355), wherein the bottom end of the plug post (352) is connected to the spring (355), the plug post (352) is inserted into the interior of the rotating post (31), the bottom end of the spring (355) is connected to the interior of the rotating post (31), the top end of the plug post (352) is fixed with a pressing cover (351), and the side wall of the pressing cover (351) is A connecting plate (353) is fixed, and two connecting plates (353) are arranged in mirror image. A sliding cover (354) is fixed to the bottom surface of the two connecting plates (353). The two sliding covers (354) are arranged in mirror image. The bottom surface of the sliding cover (354) is an inclined surface structure. The bottom surface of the sliding cover (354) is provided with a sliding groove (3541). The top surface of the inclined push block (345) is an inclined surface structure. The top surface of the inclined push block (345) is slidably fitted in the inside of the sliding groove (3541).

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