Knife adjusting device for coffee bean grinder and coffee bean grinder

Abstract

The present invention relates to a knife-adjusting device for a bean grinder and a bean grinder thereof, belonging to the technical field of bean processing, the knife-adjusting device comprises a bean grinding bracket, a lower knife disc assembly and an upper knife disc assembly adapted to the lower knife disc assembly are installed in the bean grinding bracket, and also comprises an adjusting member, the adjusting member and the upper knife disc assembly are threadedly connected and matched, and the rotating adjusting member can drive the upper knife disc assembly to move axially so as to adjust the distance between the upper knife disc and the lower knife disc, and a plurality of interruption areas are arranged on the thread structure of one side of the adjusting member and / or the upper knife disc assembly in the threaded connection and matching place, and the interruption area is connected to the upper and lower sides of the thread structure and forms a cleaning channel, and with the relative rotation of the inner and outer screw teeth, the screw teeth drive the powder and impurities to be scraped off and fall out of the outside of the thread structure. The knife-adjusting device for a bean grinder and a bean grinder thereof disclosed by the present invention can solve the problems of the current bean grinders, such as the difficulty of rotation adjustment and the easy jamming of the screw teeth.

Description

Technical Field

[0001] The invention relates to the technical field of bean processing, and in particular to a knife adjusting device for a bean grinder and the bean grinder. Background Art

[0002] The existing household and commercial coffee grinders and all-in-one grinders on the market generally use 1-3 or more springs to support the upper blade disc assembly, and adjust the distance from the fixed blade disc by rotating the inner and outer screws between the upper blade disc assembly and the adjusting part, thereby controlling the coarseness of the ground powder. However, this system has the following significant disadvantages: 1. Difficult adjustment and poor user experience: Due to the action and reaction force of the spring, the dial is often difficult to rotate when the user adjusts the coarseness of the ground powder, resulting in a very poor operating experience. This design not only increases the difficulty of use for users, but may also reduce user satisfaction with the product; 2. Difficulty in cleaning and easy to get stuck: When cleaning the blade disc, dust or impurities can easily fall onto the rotating screw. Due to the complexity of the screw structure, these dust or impurities are extremely difficult to clean. After accumulating for a long time, these impurities may cause the screw to get stuck, making the machine unable to operate and use normally. Summary of the invention

[0003] In order to overcome the defects of the prior art, the present invention proposes a blade adjustment device for a coffee bean grinder, which can solve the problems of the above-mentioned coffee bean grinders such as difficulty in rotation adjustment and easy jamming of the screw thread.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The present invention provides a knife adjusting device for a coffee bean grinder, comprising a coffee bean grinding bracket, in which a lower knife disc assembly and an upper knife disc assembly adapted to the lower knife disc assembly are installed, and also comprising an adjusting member, which is threadedly connected and matched with the upper knife disc assembly. Rotating the adjusting member can drive the upper knife disc assembly to move axially, thereby adjusting the distance between the upper knife disc of the upper knife disc assembly and the lower knife disc of the lower knife disc assembly. A plurality of breaking areas are arranged on the threaded structure of the adjusting member and / or one side of the upper knife disc assembly at the threaded connection. The breaking areas are connected to the upper and lower sides of the threaded structure to form a cleaning channel. When the adjusting member is rotated to move the upper knife disc assembly axially, as the inner and outer threads in the threaded structure rotate relative to each other, the threads drive the powder and impurities inside the threaded structure to be scraped to the position of the breaking area and then fall out of the outside of the threaded structure through the cleaning channel.

[0006] The preferred technical solution of the present invention is that a plurality of bosses are arranged on the bean grinding bracket or the lower cutter disc assembly, an external thread is arranged at the outer edge of the upper cutter disc assembly, and a groove for interrupting the external thread which is matched with the boss is also arranged at the outer edge of the upper cutter disc assembly, and the adjusting member is threadedly connected to the external thread of the upper cutter disc assembly, and operating the adjusting member can drive the upper cutter disc assembly to move axially, thereby adjusting the distance between the upper cutter disc of the upper cutter disc assembly and the lower cutter disc of the lower cutter disc assembly.

[0007] The preferred technical solution of the present invention is that the protrusions are centrally symmetrically distributed on the bean grinding bracket, and the grooves and the protrusions are centrally symmetrically distributed in a matching manner.

[0008] A preferred technical solution of the present invention is that the convex column is in an arc shape.

[0009] The preferred technical solution of the present invention is that the upper cutter disc assembly includes an adjusting disc, an upper fixed bracket and an upper cutter disc, the external thread is arranged at the outer edge of the adjusting disc, the upper fixed bracket is installed in the bean grinding bracket, the upper cutter disc and the upper fixed bracket are fixedly connected, and the upper fixed bracket and the adjusting disc are fixedly connected.

[0010] The preferred technical solution of the present invention is that the lower cutter disc assembly includes a lower fixed bracket and a lower cutter disc, the lower fixed bracket is installed in the bean grinding bracket, and the lower cutter disc and the lower fixed bracket are fixedly connected.

[0011] The preferred technical solution of the present invention is that it also includes a fixing seat, and the fixing seat is meshingly connected with the upper cutter disc assembly.

[0012] The preferred technical solution of the present invention is that a handle is further provided and installed on the upper cutter disc assembly.

[0013] A preferred technical solution of the present invention is that a scale for marking the coarseness of the ground bean powder is provided on the outer side of the adjusting member.

[0014] The present invention provides a coffee bean grinder, comprising the knife adjusting device of the above technical solution.

[0015] Beneficial effects of the present invention:

[0016] The present invention proposes a knife adjusting device for a coffee bean grinder and a coffee bean grinder thereof, wherein the knife adjusting device cancels the original spring structure, and is threadedly connected to the external thread of an adjusting member and an upper knife disc assembly by operating the adjusting member to drive the upper knife disc assembly to move axially, thereby adjusting the distance between the upper knife disc of the upper knife disc assembly relative to the lower knife disc of the lower knife disc assembly, and a plurality of interruption areas are arranged on the threaded structure on one side of the adjusting member and / or the upper knife disc assembly, and the interruption areas are connected to the upper and lower sides of the threaded structure to form a cleaning channel, and the above structure allows the user to easily and accurately adjust the distance between the upper and lower knife discs by operating the adjusting member even without the direct action of a spring, thereby achieving adjustment of the coarseness of the grinding, greatly improving the user's operating convenience, and in addition, with the relative rotation of the inner and outer threads, the threads drive the powder and impurities inside the threaded structure to be scraped to the position of the interruption area and then fall out of the outside of the threaded structure through the cleaning channel, thereby preventing them from further accumulating and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a three-dimensional diagram of a blade adjusting device for a coffee bean grinder according to a first embodiment of the present invention;

[0019] Figure 2 A cross-sectional view of a blade adjusting device for a coffee bean grinder according to a first embodiment of the present invention;

[0020] Figure 3 An exploded view of a blade adjusting device for a coffee bean grinder according to a first embodiment of the present invention;

[0021] Figure 4 It is a three-dimensional diagram of the bean grinding support according to the first embodiment of the present invention;

[0022] Figure 5 It is a three-dimensional diagram of the adjustment disk according to the first embodiment of the present invention.

[0023] In the figure:

[0024] 1-grinding bracket; 11-convex column; 2-lower fixed bracket; 3-lower blade disc; 4-adjusting disc; 41-external thread; 42-groove; 5-upper fixed bracket; 6-upper blade disc; 7-adjusting piece; 8-fixed seat; 9-handle; 10-pressing block. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0026] Embodiment 1

[0027] The present embodiment provides a blade adjustment device for a coffee bean grinder, such as Figure 1-5As shown, it includes a bean grinding bracket 1, in which a lower cutter disc assembly and an upper cutter disc assembly adapted to the lower cutter disc assembly are installed, and also includes an adjusting member 7, which is threadedly connected to the upper cutter disc assembly. Rotating the adjusting member 7 can drive the upper cutter disc assembly to move axially, thereby adjusting the distance between the upper cutter disc 6 of the upper cutter disc assembly and the lower cutter disc 3 of the lower cutter disc assembly. A plurality of interruption areas are arranged on the thread structure of the adjusting member 7 and / or one side of the upper cutter disc assembly in the threaded connection, and the interruption areas are connected to the upper and lower sides of the thread structure to form a cleaning channel. When the adjusting member 7 is rotated to move the upper cutter disc assembly axially, as the inner and outer threads in the thread structure rotate relative to each other, the threads drive the powder and impurities inside the thread structure to be scraped to the position of the interruption area and then fall out of the outside of the thread structure through the cleaning channel. The technical solution of this embodiment cleverly solves the key problems of the coffee grinder in the production process, user adjustment experience, and cleaning and maintenance through a series of unique structural innovations. The entire solution does not include a spring adjustment mechanism, thus preventing the spring elasticity from decaying during subsequent use, resulting in uneven force and thus affecting the uniformity of the ground bean powder. Specifically, first of all, in order to solve the problem that the adjustment process is difficult to rotate due to the spring force when adjusting the coarseness of the powder in traditional coffee grinders, this solution eliminates the original spring parts through the cooperation of the precisely designed upper knife disc assembly and the adjustment part, and uses the internal and external helical rotation to the finest gear as the basis to achieve a smoother adjustment experience, from fine to coarse adjustment, which is convenient, easy to operate, and simpler. Such a design allows the user to easily and accurately adjust the distance between the upper and lower knife discs by operating the adjustment part, even without the direct action of the spring, thereby achieving adjustment of the coarseness of the grinding, greatly improving the user's operating convenience. Secondly, in order to solve the problem that dust or impurities are easy to fall into the rotating screw and cause it to get stuck when cleaning the blade, this solution not only reduces the friction during rotation by setting up a partially interrupted thread design such as an interruption area, making the adjustment process smoother, but also avoids the phenomenon of screw thread getting stuck due to long-term use or improper operation, thereby significantly improving the convenience and durability of the grinder, and realizing the self-cleaning function. During the cleaning process, as the inner and outer screws rotate relative to each other, the screw drives the powder and impurities inside the thread structure to be scraped to the position of the interruption area and then falls out of the thread structure through the cleaning channel to prevent further accumulation and blockage. This design not only ensures the cleanliness and smoothness of the inside of the screw, but also avoids machine failures caused by impurity blockage, ensuring the long-term stable operation and easy maintenance of the grinder. In addition, in order to solve the problem of a large amount of residual powder caused by the need to confirm the grinding quality through grinding bean testing during the production process, since this solution adopts the strategy of assembly limit, the upper and lower blade disc planes are directly assembled to the finest grinding gear as the reference.This design eliminates the need for grinding tests during assembly of each machine on the production line, compared to the previous spring support structure. This fundamentally avoids the problem of residual bean powder inside the entire machine, which not only simplifies the production process, but also significantly optimizes the user's unboxing experience.

[0028] Specifically, a plurality of bosses 11 are provided on the bean grinding support 1 or the lower cutter disc assembly, an external thread 41 is provided at the outer edge of the upper cutter disc assembly, and a groove 42 for interrupting the external thread 41 and matching the boss 11 is also provided at the outer edge of the upper cutter disc assembly, and the adjusting member 7 is threadedly connected to the external thread 41 of the upper cutter disc assembly, and the upper cutter disc assembly can be driven to move axially by operating the adjusting member 7, so as to adjust the distance between the upper cutter disc 6 of the upper cutter disc assembly and the lower cutter disc 3 of the lower cutter disc assembly. By providing a plurality of bosses on the bean grinding support or the lower cutter disc assembly, and designing a groove for interrupting the external thread matching the groove at the outer edge of the upper cutter disc assembly, this innovative design greatly enhances the positioning and stability between the upper cutter disc assembly and the bean grinding support or the lower cutter disc assembly. The close fit between the boss and the groove effectively prevents the upper cutter disc from deflecting or shaking during the adjustment process, and ensures the accuracy and consistency of the grinding process, which is crucial to ensure the quality of the ground coffee beans.

[0029] In this embodiment, the boss 11 is centrally symmetrically distributed on the bean grinding bracket 1, the groove 42 and the boss 11 are centrally symmetrically distributed, and the number of bosses is set to three. The reason why this technical solution is a further preferred solution is that it effectively improves the stability and precision of the knife adjustment device. The centrally symmetrically distributed boss and groove design ensures that the installation position of the upper knife disc assembly in the bean grinding bracket is more accurate, avoiding the problem of uneven grinding caused by installation deviation. In addition, the centrally symmetrical structure also helps to disperse the force, so that the upper knife disc assembly is more evenly stressed during the grinding process, reducing the wear and vibration caused by uneven force, thereby extending the service life of the equipment. Further, the boss 11 is in an arc shape. The arc-shaped boss can better cooperate with the groove, reduce the friction and resistance during assembly, and make the installation and disassembly of the upper knife disc assembly smoother. In addition, the arc-shaped boss also helps to provide a smoother transition when adjusting the grinding coarseness, avoiding uneven grinding or equipment damage caused by sudden changes in the adjustment process. This design not only improves the reliability and durability of the equipment, but also allows users to experience a smoother and more comfortable operation experience when adjusting.

[0030] Preferably, the upper cutter disc assembly includes an adjustment disc 4, an upper fixed bracket 5 and an upper cutter disc 6, the external thread 41 is arranged at the outer edge of the adjustment disc 4, the upper fixed bracket 5 is installed in the bean grinding bracket 1, the upper cutter disc 6 and the upper fixed bracket 5 are fixedly connected, and the upper fixed bracket 5 and the adjustment disc 4 are fixedly connected. By arranging the external thread at the outer edge of the adjustment disc, the user can more conveniently adjust the distance between the upper cutter disc and the lower cutter disc by rotating the adjustment disc, thereby realizing precise control of the grinding coarseness. At the same time, the fixed connection design of the upper fixed bracket and the upper cutter disc ensures the stability of the upper cutter disc during the grinding process and avoids the problem of uneven grinding caused by vibration or wear. In addition, this design also facilitates the user to disassemble and clean the upper cutter disc assembly when necessary, thereby improving the maintainability and service life of the equipment. Further, the lower cutter disc assembly includes a lower fixed bracket 2 and a lower cutter disc 3, the lower fixed bracket 2 is installed in the bean grinding bracket 1, and the lower cutter disc 3 and the lower fixed bracket 2 are fixedly connected, thereby facilitating the user to disassemble and clean the entire lower cutter disc assembly when necessary, thereby improving the maintainability and service life of the equipment.

[0031] Preferably, a fixing seat 8 is further included, and the fixing seat 8 is meshedly connected with the upper cutter disc assembly. The meshing connection design between the fixing seat and the upper cutter disc assembly ensures that the upper cutter disc is accurately positioned during the grinding process, avoiding the problem of uneven grinding caused by position offset. In addition, the design of the fixing seat also helps to disperse the force on the upper cutter disc during the grinding process, reducing the wear and vibration caused by uneven force, thereby extending the service life of the equipment.

[0032] Preferably, a handle 9 is also provided, and the handle 9 is installed on the upper blade disc assembly. The design of the handle enables the user to more easily rotate the upper blade disc assembly when maintaining and cleaning the blade adjustment device, reducing the difficulty of operation and improving the convenience of operation of the equipment.

[0033] Preferably, the pitch width of the external thread 41 is 1.3-1.6 mm, and the thread height is 8-12 mm. In this embodiment, the pitch width is 1.5 mm, and the thread height is 10 mm. By reasonably setting the pitch width and thread height, the distance between the upper cutter disc and the lower cutter disc can be more accurately controlled when the adjusting disk rotates, thereby achieving accurate control of the grinding coarseness. At the same time, this precise setting also helps to reduce the problem of uneven grinding caused by errors in the adjustment process. In addition, the reasonable pitch width and thread height design can also improve the durability and wear resistance of the adjusting disk and extend the service life of the equipment.

[0034] Preferably, the outer side of the adjusting member 7 is provided with a scale for marking the coarseness of the ground bean powder. Specifically, the adjusting member 7 includes a dial and an adjusting shaft, the scale is provided on the dial, and the dial and the adjusting shaft are connected in a toothed interlocking manner. By providing a scale mark on the adjusting member, the user can more intuitively understand the current setting of the grinding coarseness, avoiding the problem of uneven grinding caused by uncertainty in the adjustment process. In addition, the presence of the scale mark also enables the user to more accurately control the adjustment amplitude and accuracy when adjusting the grinding coarseness, thereby improving the adjustment efficiency and stability of the device. This design not only improves the ease of use of the device, but also enhances the user's operating experience and satisfaction.

[0035] Preferably, a pressing block 10 is further included. The pressing block 10 is mounted on the bean grinding support 1 and is located above the adjusting member 7, and serves as a limit adjusting member 7 to prevent over-adjustment.

[0036] Embodiment 2

[0037] A coffee bean grinder provided in this embodiment includes the blade adjusting device as in the first embodiment. The coffee bean grinder also has the advantages of convenient rotation adjustment and the screw thread is not easy to get stuck.

[0038] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A blade adjustment device for a coffee bean grinder, characterized in that: It comprises a bean grinding support (1), wherein a lower cutter disc assembly and an upper cutter disc assembly adapted to fit the lower cutter disc assembly are installed in the bean grinding support (1); It also includes an adjusting member (7), wherein the adjusting member (7) is threadedly connected to the upper cutter disc assembly, and the upper cutter disc assembly can be driven to move axially by rotating the adjusting member (7), thereby adjusting the distance between the upper cutter disc (6) of the upper cutter disc assembly and the lower cutter disc (3) of the lower cutter disc assembly; A plurality of interruption areas are provided on the thread structure on one side of the upper cutter disc assembly in the threaded connection fitting, and the interruption areas are connected to the upper and lower sides of the thread structure to form a cleaning channel. When the adjusting member (7) is rotated to cause the upper cutter disc assembly to move axially, as the inner and outer threads of the thread structure rotate relative to each other, the threads drive the powder and impurities inside the thread structure to be scraped to the position of the interruption areas and then fall out of the outside of the thread structure through the cleaning channel.

2. The knife adjusting device according to claim 1, characterized in that: The bean grinding support (1) is provided with a plurality of bosses (11), the outer edge of the upper cutter disc assembly is provided with an external thread (41), and the outer edge of the upper cutter disc assembly is also provided with a groove (42) that is compatible with the bosses (11) and interrupts the external thread (41); The adjusting member (7) is threadedly connected to the external thread (41) of the upper cutter disc assembly, and operating the adjusting member (7) can drive the upper cutter disc assembly to move axially, thereby adjusting the distance between the upper cutter disc (6) of the upper cutter disc assembly and the lower cutter disc (3) of the lower cutter disc assembly.

3. The knife adjusting device according to claim 2, characterized in that: The convex columns (11) are centrally symmetrically distributed on the bean grinding support (1), and the grooves (42) and the convex columns (11) are adapted to be centrally symmetrically distributed.

4. The knife adjusting device according to claim 3, characterized in that: The convex column (11) is in an arc shape.

5. The knife adjusting device according to claim 2, characterized in that: The upper cutter disc assembly comprises an adjustment disc (4), an upper fixed bracket (5) and an upper cutter disc (6); The external thread (41) is arranged at the outer edge of the adjusting disk (4), the upper fixed bracket (5) is installed in the bean grinding bracket (1), the upper blade disk (6) and the upper fixed bracket (5) are fixedly connected, and the upper fixed bracket (5) and the adjusting disk (4) are fixedly connected.

6. The knife adjusting device according to claim 1, characterized in that: The lower cutter disc assembly comprises a lower fixed bracket (2) and a lower cutter disc (3); The lower fixed support (2) is installed in the bean grinding support (1), and the lower blade disc (3) and the lower fixed support (2) are fixedly connected.

7. The knife adjusting device according to claim 1, characterized in that: It also comprises a fixing seat (8), wherein the fixing seat (8) is meshingly connected to the upper cutter disc assembly.

8. The knife adjusting device according to claim 1, characterized in that: A handle (9) is also provided, and the handle (9) is mounted on the upper cutter disc assembly.

9. The knife adjusting device according to claim 1, characterized in that: The outer side of the adjusting member (7) is provided with a scale for marking the coarseness of the ground bean powder.

10. A coffee bean grinder, characterized in that: It comprises a knife adjusting device as described in any one of claims 1-9.

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