A pressure mechanism for a brewer of a fully automatic coffee machine

Abstract

The utility model relates to a brewer pressure mechanism of a fully automatic coffee machine, which is aimed at solving the technical problem that the main structure of the brewer of the existing similar products has poor versatility and is difficult to be used in the hydraulic or motor coffee ground cake making methods. The coffee powder in the brewing chamber of the brewer pressure mechanism is brewed and compacted into a coffee ground cake by the hydraulic extraction head assembly or the motor extraction head assembly above. The main points are that the hydraulic extraction head assembly and the motor extraction head assembly are arranged in a lower bracket, the hydraulic extraction head assembly realizes the reciprocating motion of the extraction head through an internal hydraulic sealing structure, the motor extraction head assembly enhances the up and down movement stroke of the extraction head through the motor shaft that penetrates the stepping motor, the lower bracket is provided with coffee liquid output pipes with two ends extending out of the extraction head and the hydraulic upper seat respectively on both sides, the outer diameters of the guide columns on both sides of the lower bracket are provided with guide column springs respectively, and the top of the lower bracket is connected through the upper bracket or the upper cover frame to form a gear through hole extending out of the gear ring.

Description

Technical Field

[0001] The utility model relates to a brewer of a full-automatic coffee machine, which is a pressure mechanism of the brewer of the full-automatic coffee machine. Background Art

[0002] A fully automatic coffee machine is a household appliance or commercial appliance that automatically makes coffee, integrating the entire process of brewing coffee, including grinding, pressing, filling, brewing, and removing residues. The core components of some existing fully automatic coffee machines are brewers for receiving powder, pressing, brewing, and removing residues, such as the application number 202020831309.6 disclosed in the Chinese patent literature, the authorization announcement date 2021.04.23, and the utility model name "A brewing system for a coffee machine"; some of the brewers are equipped with a gear motor adjustment structure, such as the application number 202310090180.6 disclosed in the Chinese patent literature, the application announcement date 2023.04.14, and the invention name "Coffee machine powder pressing method At the same time, some of the brewers are equipped with a hydraulic coffee grounds cake making mechanism, such as the application No. 201710696053.5 disclosed in the Chinese patent literature, the application publication date 2019.05.17, and the invention name “brewing unit of coffee machine; However, the main structure of the brewer of the above-mentioned products and similar products has poor versatility, and it is difficult to use either the hydraulic or motor coffee grounds cake making method to choose one of them. At the same time, the components occupy a large space, and it is difficult to install the gear motor on one side of the worm according to the space inside the coffee machine. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a fully automatic coffee machine brewer pressure mechanism in the art, so as to solve the technical problems that the brewer main structure of the existing similar products is poor in versatility, it is difficult to use either hydraulic or motor coffee ground cake making methods, and the components occupy a large space, and it is difficult to install the gear motor on one side of the worm according to the space inside the coffee machine. The purpose is achieved through the following technical solutions.

[0004] A full-automatic coffee machine brewer pressure mechanism, the brewing chamber of the brewer pressure mechanism is arranged in a brewing barrel, a liquid inlet hole is arranged on one side of the brewing chamber in the brewing barrel, and the brewing barrel is arranged in a brewing barrel bracket. When the coffee powder falling into the brewing chamber is scraped flat by a powder scraper plate on one side of the brewing barrel bracket at the top cavity opening of the brewing chamber and rotated to the other side of the brewing barrel bracket, the coffee powder in the brewing chamber is brewed and compacted into a coffee grounds cake by the hydraulic extraction head assembly or the motor extraction head assembly above. The coffee grounds cake is pushed out through the opened top cavity opening of the brewing chamber and the push rod at the bottom of the brewing chamber to discharge the grounds, and the outer diameter of the rod part of the push rod is provided with a push rod spring. The key points of its structural design are that the upper bracket and the lower bracket of the hydraulic extraction head assembly are provided with a hydraulic upper seat and a hydraulic lower seat which are integrated into a sealing sleeve, a Y-shaped sealing ring is provided at the sleeve joint, a hydraulic pipe is provided at the top seat opening of the hydraulic upper seat, the hydraulic upper seat in the upper bracket and the inner wall of the upper bracket form an upper cavity, one end of the extraction head extending out of the lower bracket is sleeved with the hydraulic lower seat in the lower bracket to form a lower cavity, an extraction spring is provided in the lower bracket at the sleeve joint, an O-shaped sealing ring is provided on the outer diameter of the extraction head, and two ends of the extension are provided on one side or both sides of the lower bracket. The coffee liquid output pipe of the extraction head and the hydraulic upper seat; the guide pillars are symmetrically arranged in the upper cavity outside the hydraulic lower seat above the lower cavity in the upper bracket and the lower bracket, and the outer diameter of the guide pillars is respectively provided with guide pillar springs, and the two ends of the guide pillar springs are respectively against the outer diameter edge ring of the top seat opening of the hydraulic upper seat in the upper cavity, and the gasket of the outer diameter of the lower hydraulic upper seat. The gasket, guide pillar, guide pillar spring, hydraulic upper seat, hydraulic lower seat, Y-shaped sealing ring, O-shaped sealing ring, upper bracket, lower bracket, coffee liquid output pipe, extraction head constitute a hydraulic extraction head assembly. The coffee liquid output pipe structure on both sides is convenient for satisfying the drip filter method of American coffee and the high-pressure steam method of Italian coffee respectively. Part of the main structure of the hydraulic extraction head assembly is convenient for the common use of the following motor-type extraction head assembly. The hydraulic extraction head assembly realizes the reciprocating motion of the extraction head through the internal hydraulic sealing structure.

[0005] The outer diameter of the hydraulic upper seat is provided with equidistantly distributed and raised reinforcing ribs, among which a symmetrically arranged reinforcing rib is respectively provided with a raised undercut head, and the top seat opening of the hydraulic lower seat corresponding to the undercut head is provided with a raised undercut ear. When the hydraulic upper seat and the hydraulic lower seat are sealed together, they are connected as a whole through the snap-fit ​​through holes at the undercut head of the hydraulic upper seat and the undercut ear of the hydraulic lower seat.

[0006] The upper cover frame and the lower bracket of the motor-type extraction head assembly are provided with an O-ring on the outer diameter of one end of the extraction head extending from the lower bracket, and one side or both sides of the lower bracket are provided with a coffee liquid output pipe with both ends extending from the extraction head and the hydraulic upper seat of the pressure plate, and a guide column is symmetrically provided, and the outer diameter of the guide column is provided with a guide column spring, and the two ends of the guide column spring are respectively against the extraction head and the pressure plate, and the upper cover frame above the pressure plate and the bottom of the upper cover frame in the lower bracket are provided with a through stepping motor, and the through motor shaft of the through stepping motor is connected to the pressure plate, and the pressure plate, the guide column, the guide column spring, the O-ring, the through stepping motor, the upper cover frame, the lower bracket, the coffee liquid output pipe, and the extraction head constitute the motor-type extraction head assembly. The above-mentioned coffee liquid output pipe can also be replaced with a hose to connect to the upper cover frame because the space occupied by the through stepping motor is large; at the same time, the through motor shaft of the through stepping motor enhances the up and down movement of the extraction head.

[0007] A large gear extending out of a gear ring is provided at the gear through hole of the lower bracket, one side of the outer gear ring of the large gear is meshed with the small gear on one side of the lower bracket, the center hole of the small gear is connected to the gear shaft of the gear motor on one side of the lower bracket, and the gear motor is arranged on one side of the lower bracket through the motor bracket; the inner gear ring of the large gear is meshed with the external thread of the worm in the lower bracket, and the inner diameter of the worm is fixed to the outer diameter of the hydraulic upper seat of the hydraulic extraction head assembly, or the outer diameter of the extraction head of the motor extraction head assembly.

[0008] The outer thread of the worm is provided with flat key edges symmetrically on both sides of the outer diameter, and the flat key edges of the worm are respectively inserted into the inner diameter fixed to the upper bracket; or the flat key edges of the worm are provided with open edges symmetrically on both sides, and the flat key edges and the open edges of the worm are inserted into the corresponding cover frame through holes fixed to the plane of the upper cover frame; the gear through holes of the lower bracket are respectively openings provided at the top frame opening of the lower bracket, and the opening of the lower bracket is connected with the upper bracket or the upper cover frame to form the gear through holes. This facilitates the further fixing of the worm to the upper bracket or the upper cover frame, and the formation of the gear through holes; a bracket gasket with corresponding through holes can also be added to the inner diameter of the upper bracket to replace the upper cover frame, while satisfying the fixing of the stepper motor passing through the upper cover frame and the extension of the coffee liquid output pipe.

[0009] The large gears extend out of the gear through holes symmetrically arranged in pairs in the lower bracket, and the lower bracket and the upper bracket or the upper cover bracket are rectangular in shape.

[0010] The top of the brewing barrel bracket outside the brewing barrel below the lower bracket is symmetrically provided with raised and T-shaped guide rails on both sides, and the bottom of the lower bracket corresponding to the guide rails is symmetrically provided with T-shaped grooves on both sides. The guide rails of the brewing barrel bracket are fitted and fixed with the grooves of the lower bracket.

[0011] The end surface of the extraction head is provided with a filter core net, and the filter core net is fixed to the extraction head through a screw in the middle of the bottom of the extraction head.

[0012] A slag discharge side of the brewing barrel bracket outside the brewing barrel below the lower bracket is provided with an inspection plate integrally formed with the brewing barrel bracket, and the brewing barrel bracket is composed of a shell body symmetrically arranged on the left and right.

[0013] The bottom corners of the brewing barrel bracket are respectively provided with L-shaped supporting feet integrally formed with the shell of the brewing barrel bracket, and the outer shell of the brewing barrel bracket is provided with a loading and unloading button assembly.

[0014] The utility model has a reasonable structural design, and the brewer is easy to produce, disassemble and clean. The main body of the brewer has strong versatility, and the gear motor is easy to install. It is particularly convenient to choose between hydraulic or motor coffee grounds cake making methods, and is convenient for making American coffee and Italian coffee. The utility model is suitable for use as a pressure mechanism of a fully automatic coffee machine brewer, and is a further improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of the embodiment of the present invention. Figure 1 , the corresponding motors for resetting and rotating the brewing barrel are omitted in the figure.

[0016] Figure 2 yes Figure 1 The cross-sectional structure of Figure 2 .

[0017] Figure 3 yes Figure 2 Schematic diagram of part of the explosion structure.

[0018] Figure 4 yes Figure 3 Schematic diagram of the three-dimensional structure after assembly.

[0019] Figure 5 yes Figure 2 A partial cross-sectional structural schematic diagram of an improved embodiment 2.

[0020] Figure 6 yes Figure 5 Schematic diagram of the partial explosion structure of the motor-type extraction head assembly.

[0021] Figure 7 yes Figure 6 Schematic diagram of the three-dimensional structure after assembly.

[0022] Figure 8 yes Figure 7 Schematic diagram of the cross-sectional structure.

[0023] Serial number and name of the attached drawings: 1. Worm, 2. Hydraulic upper seat, 201. Inverted head, 3. Y-type sealing ring, 4. Hydraulic lower seat, 5. Extraction spring, 6. Extraction head, 7. Filter element net, 8. Brewing barrel, 9. Upper bracket, 10. Large gear, 11. Small gear, 12. Motor bracket, 13. Gear motor, 14. Coffee liquid output pipe, 15. Lower bracket, 16. Guide rail, 17. Slag discharge plate, 18. Push rod, 19. Brewing barrel bracket, 20. Guide column, 21. Guide column spring, 22. Gasket, 23. Press plate, 24. Upper cover frame, 25. Through stepper motor, 26. Through motor shaft. Implementation

[0024] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 8 As shown, the brewing chamber of the brewer pressure mechanism is arranged in the brewing barrel 8, and a liquid inlet hole is arranged on one side of the brewing chamber in the brewing barrel. The brewing barrel is arranged in the brewing barrel bracket 19. When the coffee powder falling into the brewing chamber is scraped flat by the powder scraper plate on one side of the brewing barrel bracket at the top of the brewing chamber and rotated to the other side of the brewing barrel bracket, the coffee powder in the brewing chamber is brewed and compacted into coffee grounds cake by the hydraulic extraction head assembly or the motor extraction head assembly above. The coffee grounds cake is pushed out through the open top of the brewing chamber and the push rod 18 at the bottom of the brewing chamber to discharge the grounds. The outer diameter of the rod of the push rod is provided with a push rod spring. Figure 1-Figure 4 In the first embodiment shown, the upper bracket 9 and the lower bracket 15 of the hydraulic extraction head assembly are provided with a hydraulic upper seat 2 and a hydraulic lower seat 4 which are sealed and sleeved together. A Y-shaped sealing ring 3 is provided at the sleeved part. A hydraulic pipe is provided at the top seat opening of the hydraulic upper seat. The hydraulic upper seat in the upper bracket and the inner wall of the upper bracket form an upper cavity. One end of the extraction head 6 extending out of the lower bracket is sleeved with the hydraulic lower seat in the lower bracket to form a lower cavity. An extraction spring 5 is provided in the lower bracket at the sleeved part. The outer diameter of the extraction head is provided with an O-shaped sealing ring. The two sides of the lower bracket are provided with extraction springs extending out of the two ends. The coffee liquid output pipe 14 of the extraction head and the hydraulic upper seat; the guide pillars 20 are symmetrically arranged in the upper cavity outside the hydraulic lower seat above the lower cavity in the upper bracket and the lower bracket, and the outer diameter of the guide pillars is respectively provided with guide pillar springs 21, and the two ends of the guide pillar springs are respectively against the outer diameter edge ring of the top seat opening of the hydraulic upper seat in the upper cavity, and the gasket 22 of the outer diameter of the lower hydraulic upper seat. The gasket, guide pillar, guide pillar spring, hydraulic upper seat, hydraulic lower seat, Y-shaped sealing ring, O-shaped sealing ring, upper bracket, lower bracket, coffee liquid output pipe, extraction head constitute a hydraulic extraction head assembly. The outer diameter of the above-mentioned hydraulic upper seat is provided with equidistantly distributed and raised reinforcing ribs, and one of the symmetrically arranged reinforcing ribs is respectively provided with a raised inverted head 201, and the top seat opening of the hydraulic lower seat corresponding to the inverted head is provided with a raised inverted ear, and the hydraulic upper seat and the hydraulic lower seat are sealed and sleeved together through the snap-fit ​​through holes at the inverted head of the hydraulic upper seat and the inverted ear of the hydraulic lower seat.

[0025] like Figure 5-Figure 8In the second embodiment shown, the upper cover frame 24 of the above-mentioned motor-type extraction head assembly and the outer diameter of one end of the extraction head extending out of the lower frame in the lower frame are provided with an O-ring, and the lower frame is provided with coffee liquid output pipes with both ends extending out of the extraction head and the pressing plate 23 on both sides, and guide pillars 20 are symmetrically provided. The outer diameters of the guide pillars are provided with guide pillar springs 21, and the two ends of the guide pillar springs are respectively abutted against the extraction head and the pressing plate, and the upper cover frame above the pressing plate and the bottom of the upper cover frame in the lower frame are provided with a through-stepping motor 25, and the through-motor shaft 26 of the through-stepping motor is connected to the pressing plate. The pressing plate, guide pillars, guide pillar springs, O-rings, through-stepping motors, upper cover frame, lower frame, coffee liquid output pipe, and extraction head constitute a motor-type extraction head assembly.

[0026] In the above-mentioned first and second embodiments, a large gear 10 extending out of a gear ring is provided at the gear through hole of the lower bracket, one side of the outer gear ring of the large gear is meshed with a small gear 11 on one side of the lower bracket, and the center hole of the small gear is connected to the gear shaft of a gear motor 13 on one side of the lower bracket, and the gear motor is arranged on one side of the lower bracket through a motor bracket 12; the inner gear ring of the large gear is meshed with the outer thread of the worm 1 in the lower bracket, and the inner diameter of the worm is fixed to the outer diameter of the hydraulic upper seat of the hydraulic extraction head assembly, or the outer diameter of the extraction head of the motor extraction head assembly. Flat key edges are symmetrically provided on both sides of the outer diameter of the outer thread of the worm, and the flat key edges of the worm are respectively inserted and fixed to the inner diameter of the upper bracket; or open edges are symmetrically provided on both sides of the flat key edge of the worm, and the flat key edge and the open edge of the worm are inserted and fixed to the corresponding cover frame through hole at the plane of the upper cover frame; the gear through holes of the lower bracket are respectively openings provided at the top frame opening of the lower bracket, and the opening of the lower bracket is connected to the upper bracket or the upper cover frame to form the gear through hole. The large gears extend out of the gear through holes of the lower brackets which are symmetrically arranged in pairs, respectively, and the lower brackets and the upper brackets or the upper cover brackets are rectangular in shape correspondingly.

[0027] At the same time, raised T-shaped guide rails 16 are symmetrically provided on both sides of the top of the brewing barrel bracket on the outside of the brewing barrel below the above-mentioned lower bracket, and T-shaped grooves are symmetrically provided on both sides of the bottom of the lower bracket corresponding to the guide rails, and the guide rails of the brewing barrel bracket are fitted and fixed with the grooves of the lower bracket. A filter core net 7 is provided on the end face of the extraction head, and the filter core net is fixed to the extraction head by a screw in the middle of the bottom of the extraction head. An inspection plate 17 integrally formed with the brewing barrel bracket is provided on the slag discharge side of the brewing barrel bracket on the outside of the brewing barrel below the lower bracket, and the brewing barrel bracket consists of a shell symmetrically arranged on the left and right. L-shaped support feet integrally formed with the shell of the brewing barrel bracket are respectively provided at the bottom end corners of the brewing barrel bracket, and a loading and unloading button assembly is provided on the outer shell of the brewing barrel bracket.

[0028] The specific operations of the powder receiving state, powder pressing brewing state and slag discharge state of the brewer pressure mechanism are as follows: in the powder receiving state, the corresponding motor drives the brewing barrel back to the original point after being powered on, and makes the mouth of the brewing chamber face vertically upward; at the same time, the push rod in the brewing chamber moves downward, so that an open cavity is generated in the brewing chamber, waiting for powder receiving, and the powder receiving action is completed at this time. In the powder pressing brewing state, the corresponding motor drives the brewing barrel to rotate to one side of the hydraulic extraction head assembly or the motor extraction head assembly under power on, and the hydraulic extraction head assembly or the motor extraction head assembly is aligned with the brewing chamber and driven by the hydraulic extraction head assembly to move downward and push into the brewing chamber of the brewing barrel through the pressure of the hydraulic extraction head assembly or the stepping motor, and a coffee powder cake is formed in the brewing chamber; then, wait for the hot water from the boiler of the coffee machine to make American coffee by drip filter method and Italian coffee by high pressure steam method, and after the powder pressing brewing action is completed, the brewing chamber of the brewing barrel is opened, and the extraction head of the hydraulic extraction head assembly or the motor extraction head assembly is reset. In the slag discharge state, the corresponding motor drives the brewing barrel back to the original point and resets. At the same time, the push rod in the brewing chamber pushes the coffee powder cake out and drops it out of the shell, completing the slag discharge action.

[0029] The guide post and guide post spring structure in the first embodiment facilitates the extension of the guide post spring when the pressure mechanism of the brewer is hydraulically pressurized; after the pressure is released, the guide post spring retracts, driving the hydraulic lower seat to reset. The guide post and guide post spring structure in the second embodiment have the following advantages: first, it increases the downward movement stroke of the stepping motor and increases the pressure; second, during extraction, the coffee powder expands and generates counter pressure, thereby improving the coffee quality.

Claims

1. A brewer pressure mechanism of a fully automatic coffee machine, wherein a brewing chamber of the brewer pressure mechanism is arranged in a brewing barrel (8), a liquid inlet hole is arranged on one side of the brewing chamber in the brewing barrel, and the brewing barrel is arranged in a brewing barrel bracket (19). When the coffee powder falling into the brewing chamber is scraped flat by a powder scraper plate on one side of the brewing barrel bracket at the top cavity opening of the brewing chamber and rotated to the other side of the brewing barrel bracket, the coffee powder in the brewing chamber is brewed and compacted into a coffee ground cake by a hydraulic extraction head assembly or a motor extraction head assembly above. The coffee ground cake is pushed out through the opened top cavity opening of the brewing chamber and a push rod (18) at the bottom of the brewing chamber to discharge the grounds, and a push rod spring is arranged on the outer diameter of the rod portion of the push rod; and characterized in that The upper bracket (9) and the lower bracket (15) of the hydraulic extraction head assembly are provided with a hydraulic upper seat (2) and a hydraulic lower seat (4) which are sealed and sleeved together. A Y-shaped sealing ring (3) is provided at the sleeved position. A hydraulic pipe is provided at the top seat opening of the hydraulic upper seat. The hydraulic upper seat in the upper bracket and the inner wall of the upper bracket form an upper cavity. One end of the extraction head (6) extending out of the lower bracket is sleeved with the hydraulic lower seat in the lower bracket to form a lower cavity. An extraction spring (5) is provided in the lower bracket at the sleeved position. An O-shaped sealing ring is provided on the outer diameter of the extraction head. One side or both sides of the lower bracket are provided with two ends extending out. The extraction head and the coffee liquid output pipe (14) of the hydraulic upper seat; guide pillars (20) are symmetrically arranged in the upper cavity outside the hydraulic lower seat above the lower cavity in the upper bracket and the lower bracket, and the outer diameter of the guide pillars is respectively provided with guide pillar springs (21), and the two ends of the guide pillar springs are respectively against the top seat opening outer diameter edge ring of the hydraulic upper seat in the upper cavity, and the gasket (22) of the outer diameter of the lower hydraulic upper seat. The gasket, guide pillar, guide pillar spring, hydraulic upper seat, hydraulic lower seat, Y-shaped sealing ring, O-shaped sealing ring, upper bracket, lower bracket, coffee liquid output pipe, and extraction head constitute a hydraulic extraction head assembly.

2. The pressure mechanism of the brewer of the fully automatic coffee machine according to claim 1, characterized in that The outer diameter of the hydraulic upper seat (2) is provided with equidistantly distributed and raised reinforcing ribs, wherein one of the symmetrically arranged reinforcing ribs is provided with a raised undercut head (201), and the top seat opening of the hydraulic lower seat (4) corresponding to the undercut head is provided with a raised undercut ear, and when the hydraulic upper seat and the hydraulic lower seat are sealed together, the undercut head of the hydraulic upper seat and the undercut ear of the hydraulic lower seat are snap-fitted together to form a whole.

3. The brewing pressure mechanism of the fully automatic coffee machine according to claim 1, characterized in that The upper cover frame (24) and the lower support (15) of the motor-type extraction head assembly have an O-ring on the outer diameter of one end of the extraction head (6) extending out of the lower support. One side or both sides of the lower support are respectively provided with a coffee liquid output pipe (14) with two ends extending out of the extraction head and the pressing plate (23). Guide pillars (20) are symmetrically provided. The outer diameters of the guide pillars are respectively provided with guide pillar springs (21). The two ends of the guide pillar springs are respectively against the extraction head and the pressing plate. A through-stepping motor (25) is provided at the bottom of the upper cover frame and the lower support above the pressing plate. A through-stepping motor shaft (26) that penetrates the stepping motor is connected to the pressing plate. The pressing plate, the guide pillar, the guide pillar spring, the O-ring, the through-stepping motor, the upper cover frame, the lower support, the coffee liquid output pipe, and the extraction head constitute the motor-type extraction head assembly.

4. The pressure mechanism of the brewer of the fully automatic coffee machine according to claim 1 or 3, characterized in that A large gear (10) extending out of a gear ring is provided at the gear through hole of the lower bracket (15); one side of the outer gear ring of the large gear meshes with a small gear (11) on one side of the lower bracket; the center hole of the small gear is connected to the gear shaft of a gear motor (13) on one side of the lower bracket; the gear motor is arranged on one side of the lower bracket through a motor bracket (12); the inner gear ring of the large gear meshes with the outer thread of a worm (1) inside the lower bracket; the inner diameter of the worm is fixed to the outer diameter of a hydraulic upper seat (2) of a hydraulic extraction head assembly, or the outer diameter of an extraction head (6) of a motor extraction head assembly.

5. The brewing pressure mechanism of the fully automatic coffee machine according to claim 4, characterized in that The worm (1) has symmetrical flat key edges on both sides of the outer diameter of the external thread, and the flat key edges of the worm are respectively inserted into the inner diameter of the upper bracket (9) fixed thereto; or the worm has symmetrical open edges on both sides of the flat key edge, and the flat key edge and the open edge of the worm are inserted into the corresponding cover frame through holes fixed to the plane of the upper cover frame (24); the gear through holes of the lower bracket (15) are respectively openings provided at the top frame opening of the lower bracket, and the opening of the lower bracket is connected to the upper bracket or the upper cover frame to form the gear through holes.

6. The pressure mechanism of the brewer of the fully automatic coffee machine according to claim 5, characterized in that The large gears (10) extend out of gear through holes symmetrically arranged in pairs on the lower bracket (15), and the lower bracket and the upper bracket (9) or the upper cover bracket (24) are rectangular in shape.

7. The pressure mechanism of the brewer of the fully automatic coffee machine according to claim 1 or 3, characterized in that A brewing barrel bracket (19) outside the brewing barrel (8) below the lower bracket (15) is provided with symmetrically protruding T-shaped guide rails (16) on both sides of the top, and T-shaped grooves are symmetrically provided on both sides of the bottom of the lower bracket corresponding to the guide rails. The guide rails of the brewing barrel bracket are fitted and fixed into the grooves of the lower bracket.

8. The pressure mechanism of the brewer of the fully automatic coffee machine according to claim 1 or 3, characterized in that The end surface of the extraction head (6) is provided with a filter core net (7), and the filter core net is fixed to the extraction head via a screw in the middle of the bottom of the extraction head.

9. The brewing pressure mechanism of the fully automatic coffee machine according to claim 1 or 3, characterized in that A slag discharge side of a brewing barrel bracket (19) outside the brewing barrel (8) below the lower bracket (15) is provided with a check plate (17) integrally formed with the brewing barrel bracket, and the brewing barrel bracket is composed of a shell body arranged symmetrically on the left and right.

10. The brewing pressure mechanism of a fully automatic coffee machine according to claim 1 or 3, characterized in that The bottom corners of the brewing barrel bracket (19) are respectively provided with L-shaped supporting feet integrally formed with the housing of the brewing barrel bracket, and the outer housing of the brewing barrel bracket is provided with a loading and unloading button assembly.

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