CN212465736U

CN212465736U - Grinding mechanism of coffee machine

Info

Publication number: CN212465736U
Application number: CN202021489955.5U
Authority: CN
Inventors: 邹峻; 闵立军; 周肖仪; 郑强高
Original assignee: Guangdong Homezest Tech Co ltd
Current assignee: Guangdong Homezest Tech Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-02-05
Anticipated expiration: 2030-07-25

Abstract

A grinding mechanism of a coffee machine is characterized in that: the coffee bean grinder comprises a shell and a funnel arranged on the upper part of the shell and used for loading coffee beans, wherein an installation area is arranged in the shell, a grinding device is arranged in the installation area, a bean outlet formed in the lower end of the funnel is communicated with a grinding area of the grinding device, and a driving mechanism drives the grinding device to grind the coffee beans in the grinding area and sweeps the coffee beans out of a powder outlet through a sweeper; the grinding device comprises a fixed grinding disc and a movable grinding disc, wherein the fixed grinding disc is axially movably arranged in the installation area, the movable grinding disc is rotatably arranged, the fixed grinding disc is sleeved outside the movable grinding disc, the opposite surfaces of the two grinding discs are respectively provided with a fixed grinding tooth and a movable grinding tooth, and the grinding area is formed between the fixed grinding tooth and the movable grinding tooth. The beneficial effects of the utility model are that. The motor driving shaft is perpendicular to the grinding disc rotating center, so that the motor does not need to be installed below the grinding wheel, the arrangement of the powder outlet is facilitated, and the phenomenon that the coffee powder is remained in the powder bin is avoided.

Description

Grinding mechanism of coffee machine

Technical Field

The utility model relates to a coffee machine specifically is a grinding mechanism of coffee machine.

Background

Coffee is a beverage made from roasted and ground coffee beans. As one of three major beverages in the world, the beverage is popular with cocoa and tea as the main beverage in the world. With the improvement of living standard, coffee is gradually a common beverage in people's life. Coffee brewed by using the freshly ground coffee powder has stronger fragrance and better taste than coffee brewed by using the commercial coffee powder, so people increasingly like to use coffee machines to freshly grind coffee by themselves and adjust the taste of the coffee according to own preferences.

The existing coffee machine has the defect that the thickness of coffee powder is fixed in the grinding process: the clearance that grinds the mechanism is fixed size, and the coffee powder thickness size that leads to grinding out is the same, and the user hardly has different requirements to coffee powder thickness to carry out convenient regulation according to different people, makes coffee machine's grinding effect comparatively single, even after coffee machine uses a period, grinds the mechanism and can make the clearance grow because of wearing and tearing, and the granule of the coffee powder that grinds out also can grow relatively, and influence its quality. In addition, the prototype coffee beans of coffee powder may have different diameters due to different growth, varieties and the like, and the sizes of the coffee powder to be ground are different from one coffee bean to another, but the conventional coffee machine does not have the adjusting function. In addition, in the conventional grinding mechanism, a spindle of the motor is mostly arranged in parallel with a rotating shaft center of the grinding wheel, so that the motor must be arranged below the grinding wheel, the external dimension of the coffee machine is large, and the coffee machine is not beneficial to common families, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming that prior art exists, provide a simple structure is compact, adjusts convenient operation swift, and the user can be according to the thickness degree of demand regulation coffee, is favorable to the coffee machine to the development of miniaturized direction to a grinding mechanism of coffee machine that is applicable to the family.

The utility model discloses the purpose is realized with following mode: a grinding mechanism of a coffee machine is characterized in that: the coffee bean grinder comprises a shell and a funnel arranged on the upper part of the shell and used for loading coffee beans, wherein an installation area is arranged in the shell, a grinding device is arranged in the installation area, a bean outlet formed in the lower end of the funnel is communicated with a grinding area of the grinding device, and a driving mechanism drives the grinding device to grind the coffee beans in the grinding area and sweeps the coffee beans out of a powder outlet through a sweeper;

the grinding device comprises a fixed grinding disc and a movable grinding disc, wherein the fixed grinding disc is axially movably arranged in an installation area, the movable grinding disc is rotatably arranged, the fixed grinding disc is sleeved outside the movable grinding disc, the opposite surfaces of the two grinding discs are respectively provided with a fixed grinding tooth and a movable grinding tooth, and a grinding area is formed between the fixed grinding tooth and the movable grinding tooth;

the adjusting device comprises an adjusting gear sleeved on the periphery of the fixed grinding disc, the lower end of the adjusting gear is coaxially and fixedly provided with an internal thread column ring, the adjusting device also comprises a connecting seat positioned between the adjusting gear and the fixed grinding disc, the lower end of the connecting seat protrudes from a body of the connecting seat to form a plurality of adjusting rods, adjusting teeth protruding from the outer ends of the adjusting rods are in threaded connection with internal threads of the internal thread column ring, the adjusting gear is rotated, and the connecting seat drives the fixed grinding disc to move up and down along the axial direction of the internal thread column ring, so that the axial relative position between the fixed grinding disc and the movable grinding disc is adjusted;

the driving mechanism comprises a bearing seat positioned at the bottom of the mounting area, a driving shaft of the movable grinding disc is rotatably mounted in the bearing seat, a worm wheel and a worm of a motor driving shaft of the driving motor are arranged at the bottom of the driving shaft, the worm wheel and the worm are mutually meshed, and the driving motor drives the movable grinding disc to rotate through the transmission of the worm wheel and the worm.

The adjusting rods are at least two and symmetrically distributed at the lower part of the connecting seat, correspondingly, the shell is provided with a guide groove, and the adjusting rods are clamped in the guide groove to move axially.

The outer circumference of the fixed grinding disc is provided with an outer anti-rotation boss, and the outer anti-rotation boss is matched and connected with an inner anti-rotation boss arranged in the connecting seat.

The lower end of the connecting seat is protruded from the body of the connecting seat to form at least two buckles, and the peripheral table of the fixed grinding disc is born at the upper ends of the buckles; the buckle is positioned between the two adjacent adjusting rods.

The upper end of the internal thread column ring is provided with a positioning ring in a protruding way, and the positioning ring is clamped in the clamping groove of the adjusting gear and is coaxially connected with the clamping groove; the locating ring terminal surface equidistance distribute a plurality of keep off the position hole, the location marble elasticity that sets up on the shell is located this keeps off the position downthehole.

The outer cylindrical surface of the driving shaft is sleeved with a sweeper which is positioned below the movable grinding disc, a plurality of positioning columns are arranged at the upper end of the sweeper in a protruding mode, the positioning columns stretch into and are clamped in positioning holes in the lower end face of the movable grinding disc, and the sweeper and the movable grinding disc move coaxially.

The bottom of the shell is provided with a motor seat, a driving motor is arranged in the motor seat, and a motor driving shaft of the driving motor is perpendicular to a driving shaft of the movable grinding disc.

The utility model has the advantages that: 1. the grinding device has simple structure and low manufacturing cost, and improves the market competitiveness. 2. The working principle of the moving mechanism is simple, the manufacturing cost of the coffee machine is effectively reduced, and the production benefit of the coffee machine is improved. 3. The setting of adjusting device makes the user can be according to the taste needs of reality or the demand of the coffee bean diameter size of different grade type, carries out the regulation to the coffee powder thickness, has satisfied the demand of the coffee bean of multiple crowd and different grade type. 4. The positioning marble is elastically positioned in the gear hole of the internal thread column ring, so that the phenomenon of transition adjustment or unclear adjustment is avoided, the position of the adjusting gear is locked, and the adjusting result is locked. 5. The motor driving shaft is perpendicular to the grinding disc rotating center, so that the motor does not need to be installed below the grinding wheel, the arrangement of the powder outlet is facilitated, and the phenomenon that the coffee powder is remained in the powder bin is avoided.

Drawings

Fig. 1 is the final assembly effect diagram of the present invention.

Fig. 2 is a schematic structural view of the utility model with the funnel hidden.

Fig. 3 is an assembly view of the structure of the middle grinding device and the housing of the present invention.

Fig. 4 is a top view of the utility model with the funnel hidden.

Fig. 5 is a cross-sectional view taken along line a-a of fig. 4 according to the present invention.

Fig. 6 is a cross-sectional view taken along line B-B of fig. 4 according to the present invention.

Fig. 7 is a schematic structural diagram of the hidden housing of the present invention.

Fig. 8 is an assembly view of the structure of the middle grinding device and the driving mechanism of the present invention.

Fig. 9 is a cross-sectional view of the adjusting device of the present invention.

Fig. 10-11 are assembly views of the structure of the adjusting device of the present invention.

Fig. 12-13 are structural assembly views of the movable grinding disc and the sweeper of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. A grinding mechanism of a coffee machine is characterized in that: the coffee bean grinder comprises a shell 1 and a funnel 2 arranged at the upper part of the shell and used for loading coffee beans, wherein an installation area 11 is arranged in the shell 1, a grinding device 3 is arranged in the installation area 11, a bean outlet formed in the lower end of the funnel 2 is communicated with a grinding area of the grinding device 3, a driving mechanism drives the grinding device 3 to grind the coffee beans in the grinding area, and the coffee beans are swept out of a powder outlet 6 through a sweeper 5;

the grinding device 3 comprises a fixed grinding disc 31 which is axially movably arranged in the mounting area 11 and a movable grinding disc 32 which is rotatably arranged, wherein the fixed grinding disc 31 is sleeved outside the movable grinding disc 32, the opposite surfaces of the two grinding discs are respectively provided with a fixed grinding tooth 311 and a movable grinding tooth 321, and a grinding area is formed between the fixed grinding tooth 311 and the movable grinding tooth 321;

the periphery of the fixed grinding disc 31 is provided with an adjusting device 4, the adjusting device 4 comprises an adjusting gear 41 sleeved on the periphery of the fixed grinding disc 31, the lower end of the adjusting gear 41 is coaxially and fixedly provided with an internal thread column ring 7, the adjusting device 4 further comprises a connecting seat 42 positioned between the adjusting gear 41 and the fixed grinding disc 31, the lower end of the connecting seat 42 protrudes from the body to form a plurality of adjusting rods 421, adjusting teeth 422 protruding from the outer end of each adjusting rod 421 are in threaded connection with the internal thread of the internal thread column ring 7, the adjusting gear 41 is rotated, and the connecting seat 42 drives the fixed grinding disc 31 to move up and down along the axial direction of the internal thread column ring 7, so that the axial relative position between the fixed grinding disc 31 and the;

the driving mechanism comprises a bearing seat 8 positioned at the bottom of the mounting area 11, a driving shaft 323 of the movable grinding disc 32 is rotatably mounted in the bearing seat 8, a worm wheel 9 is arranged at the bottom of the driving shaft 323, a worm 10 is sleeved on a motor driving shaft 13 of the driving motor, the worm wheel 9 is meshed with the worm 10, and the driving motor drives the movable grinding disc 32 to rotate through the transmission of the worm wheel 9 and the worm 10.

At least two adjusting rods 421 are symmetrically distributed on the lower portion of the connecting seat 42, correspondingly, a guide groove 14 is formed in the housing 1, and the adjusting rods 421 are clamped in the guide groove 14 to move axially.

The outer circumference of the fixed grinding disc 31 is provided with an outer anti-rotation boss 312, and the outer anti-rotation boss 312 is connected with an inner anti-rotation boss 424 arranged in the connecting seat 42 in a matching manner.

The lower end of the connecting seat 42 is protruded from the body thereof to form at least two buckles 423, and the outer peripheral table of the fixed grinding disc 31 is born at the upper ends of the buckles 423; the buckle 423 is located between two adjacent adjusting rods 421.

The upper end of the internal thread column ring 7 is provided with a positioning ring 71 in a protruding way, and the positioning ring 71 is clamped in the clamping groove 411 of the adjusting gear 41 and is coaxially connected with the same; the end face of the positioning ring 71 is equidistantly distributed with a plurality of gear holes 72, and the positioning marble 15 arranged on the shell 1 is elastically positioned in the gear holes 72.

The outer cylindrical surface of the driving shaft 323 is sleeved with a cleaner 5, the cleaner 5 is positioned below the movable grinding disc 32, the upper end of the cleaner 5 is provided with a plurality of positioning columns 51 in a protruding manner, the positioning columns 51 extend into and are clamped in positioning holes 322 on the lower end surface of the movable grinding disc 32, and the cleaner 5 and the movable grinding disc 32 move coaxially.

The bottom of the shell 1 is provided with a motor base 12, a driving motor is arranged in the motor base 12, and a motor driving shaft 13 of the driving motor is vertically arranged with a driving shaft 323 of the movable grinding disc 32.

The working principle is as follows: when coffee beans are needed to be ground, the driving mechanism is started, the movable grinding disc rotates under the action of the driving mechanism, the coffee beans which are positioned in a grinding area formed between the fixed grinding teeth and the movable grinding teeth are continuously extruded with the fixed grinding disc under the continuous rotation of the movable grinding disc, and gradually fall into the grinding area with narrow lower part from the grinding area with wide upper part, the coffee beans are ground into powder from granules, and finally the coffee beans are swept out of the powder outlet through the sweeper positioned below the movable grinding disc, so that the grinding of the coffee beans is completed.

The driving mechanism comprises a bearing seat positioned at the bottom of the mounting area, a driving shaft of the movable grinding disc is rotatably mounted in the bearing seat, a worm wheel is arranged at the bottom of the driving shaft, a worm is sleeved on a motor driving shaft of the driving motor, the worm wheel and the worm are mutually meshed, the driving motor drives the movable grinding disc to rotate through the transmission of the worm wheel and the worm, the driving mechanism is simple in working principle, simple in structure, stable in transmission and high in pin quantity, the manufacturing cost of the coffee machine is effectively reduced, and the production benefit of the coffee machine is improved.

In addition, the motor driving shaft is arranged perpendicular to the rotation center of the grinding disc, so that the motor is not required to be arranged below the grinding device to shield the bean powder outlet, but is arranged on one side of the grinding device, the bean powder ground by the grinding device directly flows into the bean powder container arranged below the bean disc component through the bean powder outlet, a long transverse channel is not required, no bean powder is left after the bean is ground every time, the utilization rate of the bean is improved, and the quality of beverages or foods made of the bean powder can be ensured.

Further, fixed mill periphery is provided with adjusting device, and adjusting device can adjust the axial relative position between fixed mill and the activity mill, has adjusted the minimum exit width in grinding district promptly, and the user can utilize adjusting device to carry out the regulation of coffee powder thickness degree according to the taste needs of reality or the demand of the coffee bean diameter size of different grade type, has satisfied the demand of the coffee bean of multiple crowd and different grade type.

The adjusting device comprises an adjusting gear sleeved on the periphery of the fixed grinding disc, and an internal thread column ring is coaxially and fixedly mounted at the lower end of the adjusting gear; adjusting device is still including being located the connecting seat between adjusting gear and fixed mill, the connecting seat lower extreme is by the protruding a plurality of regulation pole that forms of its body, adjust the internal thread spiro union of the protruding regulation tooth that sets up of its outer end and internal thread post circle, rotatory adjusting gear, the connecting seat drives fixed mill and reciprocates along the axial of internal thread post circle to adjust the axial relative position between fixed mill and movable mill, adjusting device simple structure, it is low to adjust the operation technical requirement, the regulation degree of difficulty is low, convenient operation is swift.

Furthermore, the positioning ring is arranged at the upper end of the internal thread column ring in a protruding mode, a plurality of positioning holes are distributed on the end face of the positioning ring at equal intervals, the positioning marble arranged on the shell is elastically positioned in the positioning holes, a user can adjust the internal thread column ring hole by hole in the adjusting process, the phenomenon that transition adjustment or adjustment is unclear is avoided, the position of the adjusting gear is locked, the adjusting state is locked, the adjusting effect is prevented from being influenced by vibration in the grinding process, and therefore the internal thread column ring can be widely popularized and used.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A grinding mechanism of a coffee machine is characterized in that: the coffee bean grinder comprises a shell (1) and a funnel (2) arranged on the upper portion of the shell and used for loading coffee beans, wherein an installation area (11) is arranged inside the shell (1), a grinding device (3) is installed in the installation area (11), a bean outlet formed in the lower end of the funnel (2) is communicated with the grinding area of the grinding device (3), and a driving mechanism drives the grinding device (3) to grind the coffee beans in the grinding area and sweeps the coffee beans out of a powder outlet (6) through a sweeper (5);

the grinding device (3) comprises a fixed grinding disc (31) which is axially movably arranged in the mounting area (11) and a movable grinding disc (32) which is rotatably arranged, wherein the fixed grinding disc (31) is sleeved outside the movable grinding disc (32), the opposite surfaces of the two grinding discs are respectively provided with a fixed grinding tooth (311) and a movable grinding tooth (321), and a grinding area is formed between the fixed grinding tooth (311) and the movable grinding tooth (321);

the adjusting device (4) is arranged on the periphery of the fixed grinding disc (31), the adjusting device (4) comprises an adjusting gear (41) sleeved on the periphery of the fixed grinding disc (31), an internal thread column ring (7) is coaxially and fixedly installed at the lower end of the adjusting gear (41), the adjusting device (4) further comprises a connecting seat (42) positioned between the adjusting gear (41) and the fixed grinding disc (31), the lower end of the connecting seat (42) protrudes from a body of the connecting seat to form a plurality of adjusting rods (421), adjusting teeth (422) protruding from the outer end of each adjusting rod (421) are in threaded connection with the internal thread of the internal thread column ring (7), the adjusting gear (41) is rotated, and the connecting seat (42) drives the fixed grinding disc (31) to move up and down along the axial direction of the internal thread column ring (7), so that the axial relative position between the fixed grinding disc (31) and;

the driving mechanism comprises a bearing seat (8) positioned at the bottom of the mounting area (11), a driving shaft (323) of the movable grinding disc (32) is rotatably mounted in the bearing seat (8), a worm wheel (9) and a worm (10) sleeved on a motor driving shaft (13) of the driving motor are arranged at the bottom of the driving shaft (323), the worm wheel (9) and the worm (10) are meshed with each other, and the driving motor drives the movable grinding disc (32) to rotate through the transmission of the worm wheel (9) and the worm (10).

2. A grinding mechanism of a coffee machine as claimed in claim 1, characterized in that: the adjusting rods (421) are at least two and symmetrically distributed at the lower part of the connecting seat (42), correspondingly, the shell (1) is provided with a guide groove (14), and the adjusting rods (421) are clamped in the guide groove (14) to move axially.

3. A grinding mechanism of a coffee machine as claimed in claim 1, characterized in that: the outer circumference of the fixed grinding disc (31) is provided with an outer anti-rotation boss (312), and the outer anti-rotation boss (312) is matched and connected with an inner anti-rotation boss (424) arranged in the connecting seat (42).

4. A grinding mechanism of a coffee machine as claimed in claim 2, characterized in that: the lower end of the connecting seat (42) is protruded from the body thereof to form at least two buckles (423), and the peripheral table of the fixed grinding disc (31) is born at the upper end of the buckles (423); the buckle (423) is positioned between the two adjacent adjusting rods (421).

5. A grinding mechanism of a coffee machine as claimed in claim 1, characterized in that: the upper end of the internal thread column ring (7) is provided with a positioning ring (71) in a protruding manner, and the positioning ring (71) is clamped in a clamping groove (411) of the adjusting gear (41) and is coaxially connected with the clamping groove; the end face of the positioning ring (71) is equidistantly provided with a plurality of positioning holes (72), and the positioning marble (15) arranged on the shell (1) is elastically positioned in the positioning holes (72).

6. A grinding mechanism of a coffee machine as claimed in claim 1, characterized in that: the cleaning device is characterized in that a cleaning device (5) is sleeved on the outer cylindrical surface of the driving shaft (323), the cleaning device (5) is located below the movable grinding disc (32), a plurality of positioning columns (51) are arranged at the upper end of the cleaning device (5) in a protruding mode, the positioning columns (51) extend into and are clamped in positioning holes (322) in the lower end face of the movable grinding disc (32), and the cleaning device (5) and the movable grinding disc (32) move coaxially.

7. A grinding mechanism of a coffee machine as claimed in claim 1, characterized in that: the bottom of the shell (1) is provided with a motor seat (12), a driving motor is arranged in the motor seat (12), and a motor driving shaft (13) of the driving motor is vertical to a driving shaft (323) of the movable grinding disc (32).