Machine head of brewing device of coffee machine

Abstract

The utility model relates to a machine head of a brewing device of a coffee machine, which aims at solving the technical problems of poor stability, long stroke, high cost and large volume of a screw rod and a gear at a brewing head component of the existing like product. The brewing machine head is characterized by comprising a brewing head assembly and a brewing base assembly, the brewing head assembly comprises a push rod assembly and a machine base assembly, and the push rod assembly is arranged in the base assembly; protruding guide ribs are symmetrically arranged on the two sides of the outer diameter of a sleeve above an inner chock plug of the push rod assembly, one end of the inner chock plug of each guide rib is a deep groove rib with the outer diameter reduced, an inner thread is arranged on the inner diameter of the sleeve, and an outer thread at the position of a thread section at one end of a screw rod piece is connected with the inner thread of the sleeve. A large gear at the other end of the screw part is meshed with one gear of the gear assembly, and guide grooves in the two sides of the center hole in the shell are inserted into guide ribs on the two sides of a sleeve of the push rod assembly to be positioned and move up and down; and when the bent head of the hook at the hook claw assembly is positioned in the deep groove rib, the hook head of the hook is separated from the outer flange of the barrel opening of the brewing barrel.

Description

Technical Field

[0001] The utility model relates to a brewing head of a coffee machine brewer, which is a brewing head of a coffee machine brewer. Background Art

[0002] A coffee machine is a household appliance or commercial appliance that automatically makes coffee, integrating the entire process of grinding, pressing, filling, brewing, and removing residues. The core component of some existing fully automatic coffee machines is a brewer, which is used for receiving powder, pressing, brewing, brewing, and removing residues. It generally consists of two parts: a brewing barrel assembly and a brewing head assembly. The powder pressing and brewing mechanism is arranged on the brewing head assembly. When the brewing barrel assembly is located on one side, powder is received. When the barrel body of the brewing barrel assembly rotates to the side of the brewing set assembly, after pressing, brewing, brewing, and removing residues, the barrel body of the brewing barrel assembly returns to the powder receiving side to wait for the next powder receiving. Some existing coffee machine brewers of this type use large gears and screws to rotate and move up and down, such as the application number 202410298852.7 disclosed in the Chinese patent literature, the application publication date 2024.05.07, and the invention name "large-dose coffee machine automatic extraction and brewing brewer"; other coffee machine brewers of this type use a hook-type structure design, such as the application number 202410707362.8 disclosed in the Chinese patent literature, the application publication date 2024.08.02, and the invention name "coffee machine brewer pressed powder brewing and brewing device"; the above structure realizes the locking hook to engage or disengage with the barrel mouth of the brewing barrel and the pushing head of the screw is sealed with the barrel mouth of the brewing barrel when the screw and the push head are connected as one body in the shell when moving up and down, and the pressing of the powder in the brewing barrel is mainly achieved by the slag discharge rod in the brewing barrel; but the locking hook is kept in the engaged position, which is prone to jamming, and at the same time, its production and assembly are inconvenient, the production cost is high, and the volume occupies a large area. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a coffee machine brewer head in the art, which can solve the technical problems that the existing similar products have poor structural design, resulting in inconvenient production and assembly, high production cost, and large volume, especially the poor stability of the screw and gear at the brewing head assembly of similar products, long stroke, high cost, and large volume. The purpose is achieved through the following technical solutions.

[0004] A coffee machine brewer head, the brewer head comprising a brewing head assembly and a brewing base assembly. The brewing head assembly includes a push rod assembly and a base assembly. The push rod assembly is disposed within the base assembly. An outlet hole is provided within the push rod assembly. An outer diameter of a plug head at one end of the push rod assembly is provided with a sealing ring. One side of the push rod assembly is driven to move up and down by a gear assembly and a stepper motor. Claw assemblies are symmetrically provided on both sides below the housing of the base assembly. A brewing bucket is disposed within the brewing base assembly. When the brewing bucket within the brewing base assembly rotates to one side and aligns with the push rod assembly of the brewing head assembly, the brewing bucket within the brewing base assembly is lifted by a swing rod within the brewing base assembly. The mouth of the brewing bucket abuts or aligns with the bottom end face of the housing of the base assembly of the brewing head assembly. While one end of the hook of the claw assembly is buckled with the outward flange at the mouth of the brewing bucket, the stepper motor drives the push rod assembly to press down into the brewing bucket through the gear assembly to achieve powder pressing. Torsion springs are respectively provided on the pins in the middle of the hooks of the claw assembly. The key point of its structural design is that symmetrically protruding guiding ribs are provided on both outer diameters of the sleeve above the plug head of the push rod assembly. One end of the guiding rib at the plug head is a deep groove rib with a gradually decreasing outer diameter. An internal thread is provided within the inner diameter of the sleeve. An external thread at the threaded section at one end of the screw member is connected to the internal thread of the sleeve. A large gear at the other end of the screw member meshes with one of the gears of the gear assembly. The other ends of the hooks of the claw assembly are bent inward towards the hook heads and are respectively provided with elbows. The hook heads of the claw assembly are respectively kept open outward by the action of torsion springs. When the elbows at the other ends of the hook heads abut against the outer diameter of the push rod assembly, the guiding grooves on both sides of the central hole within the housing are inserted into the guiding ribs on both sides of the sleeve of the push rod assembly to position the up and down movement. When the elbows are embedded into the deep groove ribs of the guiding ribs on both sides of the push rod assembly, the hook heads of the hooks are disengaged from the outward flange at the mouth of the brewing bucket. When the push rod assembly is screwed into the brewing bucket under the action of the stepper motor, the elbows are located on the guiding ribs on both sides of the push rod assembly, and the hook heads of the hooks are buckled with the outward flange at the mouth of the brewing bucket. Thus, according to the above structure, after powder pressing and brewing within the brewing bucket are completed, the push rod assembly returns to the initial position. The elbows at the hooks of the claw assembly return to the position of the deep groove ribs of the guiding ribs of the push rod assembly. The hook heads of the hooks of the claw assembly return to the open state. The hooks are disengaged from the outward flange at the mouth of the brewing bucket. The brewing bucket returns to the initial powder receiving position through a swing motor on one side of the brewing base assembly. A slag guiding plate is provided on one side of the mouth of the brewing bucket of the brewing bucket as needed on one side of the brewing base assembly, and a powder scraping plate is provided on one side of the brewing head assembly of the brewing base assembly above the mouth of the brewing bucket at the powder receiving position. The brewing head assembly and the brewing base assembly are connected as a whole through an outer diameter connecting plate. At the same time, as needed, the symmetrically provided claw assemblies on both sides below the housing of the base assembly can also be omitted, and the corresponding components can be combined for use as the brewing head assembly.

[0005] The push rod assembly includes an inner plug head, a spring, an inner fixing sleeve and an inner threaded sleeve. The inner fixing sleeve and the inner threaded sleeve form the sleeve. The inner fixing sleeve is arranged inside the inner threaded sleeve with a gap therebetween. The inner diameter of the inner threaded sleeve is provided with internal threads, and the external threads at the threaded section of the screw rod are connected to the internal threads of the inner threaded sleeve. The end face of the sleeve opening at the connection of the inner fixing sleeve and the inner threaded sleeve is integrally connected to the other end of the inner plug head through screws and a central screw, and the spring is provided at the connection. The end face of the inner plug head is provided with a filter screen. A first micro switch is provided on one side of the central screw in the inner cavity of the inner fixing sleeve. When the push rod assembly presses the coffee powder in the brewing barrel downward, the spring deforms, and the inner plug head triggers a second micro switch through the central screw.

[0006] On one side of the outer diameter of the inner threaded sleeve of the push rod assembly in the housing, there is a convex rib. A second micro switch is provided in the housing corresponding to the convex rib. The second micro switch is arranged in the housing through a micro switch support seat. When the push rod assembly moves to press the powder and / or open the claw assembly, the push rod assembly triggers the first micro switch.

[0007] On both sides of the deep groove rib at the inner threaded sleeve of the push rod assembly, there are wing edge grooves, and the wing edge grooves are integrally connected to the flat key edges on both sides of the guiding rib of the inner threaded sleeve. The flat key edge of the inner threaded sleeve moves up and down corresponding to the guiding groove in the housing. At the other end of the hook of the claw assembly, there is a roller, and the outer diameter or the groove at the outer diameter of the roller abuts against the guiding rib of the push rod assembly and rolls when moving up and down. Thus, while further limiting the position through the roller, the transition between the guiding rib and the deep groove rib is stabilized.

[0008] The outer flanging at the barrel opening of the brewing barrel is square. On both sides of the bottom of the outer flanging at the barrel opening of the brewing barrel, there are symmetrically arranged outer grooves in the shape of upwardly inclined lifting buckles. The shapes of the outer grooves of the brewing barrel respectively correspond to and are buckled with the shapes of the hook heads at the hooks of the claw assembly. The end of the hook head of the claw assembly is provided with a corresponding arc-shaped edge. Due to the above structure, the contact surface and the groove shape between the hook head of the claw assembly and the outer flanging of the brewing barrel are increased, and the stability when the two are buckled is better.

[0009] On both sides of the outer diameter below the outer groove of the brewing barrel, there are symmetrically arranged limiting posts. When the brewing barrel is lifted by the inner swing rod member in the brewing seat assembly and buckled with the hook head at the hook of the claw assembly, the limiting posts of the brewing barrel abut against and are limited by the top shell opening at the outer shell of the brewing seat assembly.

[0010] In the upper and lower circular grooves of the large gear of the screw rod member in the housing, a first bearing and a second bearing are respectively provided. A washer is provided on the end face of the step below the outer convex platform at the push rod assembly at the bottom of the housing. The hook of the claw assembly swings out of the opening on one side of the convex platform at the step of the housing. The above structure improves the stability of the rotation of the gear assembly in the housing and the sealing during the installation of the bottom end face of the housing.

[0011] The housing includes a housing base, a housing cover, and a top cover. The housing base, the housing cover, and the top cover are sequentially connected and integrated by screws and nuts at the end corners. At the same time, the first bearing is encapsulated in the housing through the top cover. One side of the gear assembly inside the connection between the housing base and the housing cover is aligned with the openings at the housing base and the housing cover. On the outer diameter of the housing base on one side of the opening, there are a gear assembly and a stepper motor. The stepper motor is arranged on the motor base on one side of the housing base. The motor shaft of the stepper motor is connected to the first gear of the gear assembly. One side of the first gear of the gear assembly meshes with one side of the second gear. The other side of the second gear extends into the housing and meshes with the second gear of the gear assembly. The claw assemblies are respectively arranged in the notches of the openings on both sides of the convex platform at the bottom of the housing base. The above is a specific structural embodiment of the housing. For the convenience of installing the stepper motor, the gear assembly, the claw assembly, and the push rod assembly, other structural forms can also be adopted.

[0012] When the stepper motor drives the push rod assembly to press down into the brewing barrel to achieve powder pressing, the slag discharge rod at the bottom inside the brewing barrel drives the push rod assembly to move through the transmission motor on one side of the brewing seat assembly. The above structure is a structural design for the slag discharge rod to cooperate with the push rod assembly to further move upward for powder pressing, and the powder pressing effect is better. It can also achieve powder pressing only through the push rod assembly, and the slag discharge rod can also be started only for slag discharge.

[0013] Two liquid outlet holes are symmetrically arranged inside the push rod assembly of the brewing head assembly. The two liquid outlet holes are respectively an American coffee liquid outlet hole and an Italian coffee liquid outlet hole.

[0014] The structure of the present utility model is reasonably designed, with diverse structural forms, convenient production and assembly, small volume, and low cost. Especially, it has good stability when the brewing barrel is hooked in the powder pressing state. It is suitable for use as the brewing head of a coffee machine and for further improvement of similar products. Description of the Drawings

[0015] Figure 1 is a partial exploded structural schematic diagram of the present utility model.

[0016] Figure 2 is Figure 1 the internal structural schematic diagram of the housing base of

[0017] Figure 3 is Figure 1 the three-dimensional structural schematic diagram of the bottom after assembly of

[0018] Figure 4 is Figure 1 the internal structural schematic diagram of the push rod assembly of , and the dotted lines in the figure are the internal structures.

[0019] Figure 5 is Figure 1 the partial exploded structural schematic diagram of the push rod assembly of

[0020] Figure 6 isFigure 1 Schematic cross-sectional view after assembly.

[0021] Figure 7 is Figure 1 Schematic internal structure view of the housing after assembly. The dotted lines in the figure represent the housing structure.

[0022] Figure 8 is Figure 1 Schematic view of the structure in use of the bottom after assembly and the brewing barrel. Part A in the figure is framed, and the brewing seat assembly is omitted.

[0023] Figure 9 is Figure 8 Enlarged structure view of Part A.

[0024] Drawing reference numbers and names: 1. Push rod assembly, 101. Filter element net, 102. Inner plug, 103. Sealing ring, 104. Spring, 105. Inner fixing sleeve, 106. Inner threaded sleeve, 1061. Guide rib, 1062. Deep groove rib, 1603. Convex rib, 107. First micro switch, 2. Hook assembly, 201. Hook, 202. Torsion spring, 203. Roller, 3. Washer, 4. Housing base, 401. Guide groove, 5. Micro switch support, 6. Second micro switch, 7. Housing cover, 8. First bearing, 9. Screw member, 901. Threaded section, 902. Large gear, 10. Second bearing, 11. Top cover, 12. Gear assembly, 13. Stepping motor, 14. Machine base assembly, 15. Brewing barrel, 1501. Outer groove. Embodiment

[0025] Now, in combination with the drawings, the structure and use of the present utility model will be further described. As Figures 1-9As shown in the figure, the brewing machine head includes a brewing head assembly and a brewing base assembly. The brewing head assembly includes a push rod assembly 1 and a base assembly 14. The push rod assembly is arranged inside the base assembly. There is a liquid outlet hole in the push rod assembly. An outer diameter of an inner plug 102 at one end of the push rod assembly is provided with a sealing ring 103. One side of the push rod assembly is driven to move up and down by a gear assembly 12 and a stepping motor 13. On both sides of the lower part of the housing of the base assembly, claw assemblies 2 are symmetrically arranged. A brewing barrel 15 is arranged inside the brewing base assembly. When the brewing barrel inside the brewing base assembly rotates to one side and aligns with the push rod assembly of the brewing head assembly, the brewing barrel inside the brewing base assembly is lifted by a swing rod inside the brewing base assembly. The barrel mouth of the brewing barrel abuts against or aligns with the bottom end face of the housing of the base assembly of the brewing head assembly. While one end of a hook 201 of the claw assembly is buckled with the outer turned edge at the barrel mouth of the brewing barrel, the stepping motor drives the push rod assembly to press down into the brewing barrel through the gear assembly to achieve powder pressing. A torsion spring 202 is respectively arranged on a pin shaft in the middle of the hook of the claw assembly. A roller 203 is arranged at the bent head at the other end of the hook of the claw assembly. On both sides of the outer diameter of the sleeve above the inner plug of the above-mentioned push rod assembly, convex guiding ribs 1061 are symmetrically arranged. One end of the guiding rib at the inner plug is a deep groove rib 1062 with a gradually reduced outer diameter. The inner diameter of the sleeve is provided with an internal thread. An external thread at a threaded section 901 at one end of a screw member 9 is connected with the internal thread of the sleeve. A large gear 902 at the other end of the screw member meshes with one of the gears of the gear assembly. The other ends of the hooks of the claw assembly are bent towards the inner side of the hook heads and are respectively provided with bent heads. The hook heads of the claw assembly are respectively kept open outward at one end through the action of torsion springs. While the bent heads at the other ends of the hook heads abut against the outer diameter of the push rod assembly, guiding grooves 401 on both sides of the central hole in the housing are inserted into the guiding ribs on both sides of the sleeve of the push rod assembly to position the up and down movement. When the bent heads are embedded in the deep groove ribs of the guiding grooves on both sides of the push rod assembly, the hook heads of the hooks are separated from the outer turned edge at the barrel mouth of the brewing barrel. When the push rod assembly is screwed into the brewing barrel through the action of the stepping motor, the bent heads are located on the guiding ribs on both sides of the push rod assembly, and the hook heads of the hooks are buckled with the outer turned edge at the barrel mouth of the brewing barrel.

[0026] The specific structure is as follows: The above-mentioned push rod assembly includes an inner plug head, a spring 104, an inner fixing sleeve 105, and an inner thread sleeve 106. The inner fixing sleeve and the inner thread sleeve form the sleeve. The inner fixing sleeve is arranged inside the inner thread sleeve with a gap therebetween. The inner diameter of the inner thread sleeve is provided with internal threads, and the external threads at the threaded section of the screw member are connected to the internal threads of the inner thread sleeve. The end face of the sleeve opening at the connection between the inner fixing sleeve and the inner thread sleeve is integrally connected to the other end of the inner plug head through screws and a central screw, and the spring is provided at the connection. The end face of the inner plug head is provided with a filter screen 101, and a first micro switch 107 is provided on one side of the central screw in the inner cavity of the inner fixing sleeve; when the push rod assembly presses down the coffee powder in the brewing barrel, the spring deforms, and the inner plug head triggers the first micro switch through the central screw. Winged grooves are provided on both sides of the deep groove ribs at the inner thread sleeve of the push rod assembly, and the winged grooves are integrally connected to the flat key sides on both sides of the guiding ribs of the inner thread sleeve. The flat key sides of the inner thread sleeve move up and down corresponding to the guiding grooves in the housing; the outer diameter of the roller abuts against the guiding ribs of the push rod assembly and rolls when moving up and down. Alternatively, a groove is provided at the outer diameter of the above-mentioned roller, and the groove at the outer diameter of the roller abuts against the guiding ribs of the push rod assembly and rolls when moving up and down, thereby further improving the stability of the roller. A convex rib 1603 is provided on one side of the outer diameter of the inner thread sleeve of the push rod assembly in the housing, and a second micro switch 6 is provided in the housing corresponding to the convex rib. The second micro switch is arranged in the housing through a micro switch support seat 5; when the push rod assembly moves to press the powder and / or open the claw assembly, the push rod assembly triggers the second micro switch.

[0027] The outer flanged edge of the barrel mouth of the above-mentioned brewing barrel is square. On both sides of the bottom of the outer flanged edge of the barrel mouth of the brewing barrel, there are symmetrically arranged outer grooves 1501 in the shape of upwardly inclined lifting buckles. The shapes of the outer grooves of the brewing barrel respectively correspond to and are buckled with the hook head shapes at the hooks of the claw assembly. The end of the hook head of the claw assembly is provided with a corresponding arc-shaped edge. Further, on both sides of the outer diameter below the outer groove of the brewing barrel, there are symmetrically arranged limit posts. When the brewing barrel is lifted by the inner swing rod member of the brewing seat assembly and buckled with the hook head at the hook of the claw assembly, the limit posts of the brewing barrel abut against and are limited by the top shell opening at the outer shell of the brewing seat assembly. In the upper and lower ring grooves of the large gear of the screw member in the shell body, there are respectively arranged a first bearing 8 and a second bearing 10. At the end face of the step below the outer convex platform at the push rod assembly at the bottom of the shell body, there is a washer 3. The hook of the claw assembly swings out of the opening on one side of the convex platform at the step of the shell body. The shell body includes a shell base 4, a shell cover 7, and a top cover 11. The shell base, the shell cover, and the top cover are sequentially connected and integrated by screws and nuts at the end corners. At the same time, the first bearing is encapsulated in the shell body through the top cover. One side of the gear assembly inside the connection between the shell base and the shell cover is aligned with the opening at the shell base and the shell cover. On the outer diameter of the shell base on one side of the opening, there are a gear assembly and a stepping motor. The stepping motor is arranged on the motor base on one side of the shell base. The motor shaft of the stepping motor is connected to the first gear of the gear assembly. One side of the first gear of the gear assembly meshes with one side of the second gear. The other side of the second gear extends into the shell body and meshes with the second gear of the gear assembly. The claw assemblies are respectively arranged in the slots at both openings on both sides of the convex platform at the bottom of the shell base.

[0028] One or two liquid outlet holes are symmetrically arranged inside the push rod assembly of the above-mentioned brewing head assembly. The two liquid outlet holes are respectively an American coffee liquid outlet hole and an Italian coffee liquid outlet hole.

[0029] The specific operations of the powder receiving state, powder pressing and brewing state, and residue discharging state of the brewing machine head are as follows: In the powder receiving state, the swing motor on one side of the outer diameter of the brewing seat assembly drives the brewing barrel of the brewing seat assembly back to the origin after being powered on, and the mouth of the brewing barrel is vertically upward and aligned with the powder receiving port inside the coffee machine; at the same time, the drive motor on the other side of the outer diameter of the brewing seat assembly drives the residue discharging rod of the brewing seat assembly back to the origin after being powered on, creating an open cavity in the brewing barrel to wait for powder receiving, and then completing the powder receiving action. In the powder pressing and brewing state, the swing motor drives the brewing barrel of the brewing seat assembly to one side of the brewing head assembly after being powered on, the mouth of the brewing barrel is vertically upward and aligned with the push rod assembly, and the brewing barrel is lifted. While the stepping motor drives the push rod assembly to move downward through the gear assembly and the screw member so that the push rod assembly is sleeved into the brewing barrel, the push rod assembly drives the hook of the hook assembly to swing, and the hook head of the hook engages with the outward turned edge of the mouth of the brewing barrel. At this time, the residue discharging rod in the brewing barrel of the brewing seat assembly moves upward, and the coffee powder in the brewing barrel is made into a powder cake; then, wait for hot water from the boiler of the coffee machine for coffee extraction and brewing. In the residue discharging state, when the stepping motor drives the push rod assembly to move upward and reset, the hook of the hook assembly swings and resets and disengages from the outward turned edge of the mouth of the brewing barrel. The swing motor drives the brewing barrel of the brewing seat assembly, and the drive motor drives the residue discharging rod in the brewing barrel of the brewing seat assembly to push out the coffee residue cake after being powered on. The coffee residue cake falls out from the residue discharging plate, completing the residue discharging action, and waiting for the next powder receiving and powder pressing operations.

[0030] The above content is intended to illustrate the technical means of the present utility model and does not limit the technical scope of the present utility model. Obvious improvements or replacements made by those skilled in the art to the present utility model in combination with the existing common general knowledge also fall within the protection scope of the claims of the present utility model. For example: omitting the hook assembly, and the push rod assembly is arranged in a shell with a screw member and used as the brewing machine head.

Claims

1. A coffee machine brewer head, the brewer head comprising a brewing head assembly and a brewing base assembly. The brewing head assembly includes a push rod assembly (1) and a base assembly (14). The push rod assembly is disposed within the base assembly. The push rod assembly is provided with a liquid outlet hole. An outer diameter of an inner plug head (102) at one end of the push rod assembly is provided with a sealing ring (103). One side of the push rod assembly is driven to move up and down by a gear assembly (12) and a stepping motor (13). Claw assemblies (2) are symmetrically provided on both sides below the housing of the base assembly. A brewing barrel (15) is disposed within the brewing base assembly. When the brewing barrel within the brewing base assembly rotates to one side and aligns with the push rod assembly of the brewing head assembly, the brewing barrel within the brewing base assembly is lifted by a swing rod within the brewing base assembly. The mouth of the brewing barrel abuts or aligns with the bottom end face of the housing of the base assembly of the brewing head assembly. While one end of a hook (201) of the claw assembly is buckled with a turned-up edge at the mouth of the brewing barrel, the stepping motor drives the push rod assembly to press downward into the brewing barrel through the gear assembly to achieve powder pressing. Torsion springs (202) are respectively provided on pins in the middle of the hooks of the claw assembly; characterized in that On both sides of the outer diameter of the sleeve above the inner plug (102) of the push rod assembly (1), there are symmetrically arranged raised guide ribs (1061). One end of the guide rib on the inner plug is a deep groove rib (1062) with a reduced outer diameter. The inner diameter of the sleeve is provided with an internal thread, and the external thread at the threaded section (901) of one end of the screw member (9) is connected to the internal thread of the sleeve. The large gear (902) at the other end of the screw member meshes with one of the gears of the gear assembly (12). The other ends of the hooks (201) of the claw assembly (2) are bent inward towards the hook head and are respectively provided with elbows. The hook heads of the claw assembly are respectively kept open outward at one end by the action of torsion springs (202). When the elbows at the other ends of the hook heads abut against the outer diameter of the push rod assembly, the guide grooves (401) on both sides of the central hole in the shell are inserted into the guide ribs on both sides of the sleeve of the push rod assembly for positioning and vertical movement; when the elbows are embedded in the deep groove ribs of the guide grooves on both sides of the push rod assembly, the hook heads of the hooks are disengaged from the turned-up edge of the barrel mouth of the brewing barrel (15); when the push rod assembly is screwed into the brewing barrel by the action of the stepping motor (13), the elbows are located on the guide ribs on both sides of the push rod assembly, and the hook heads of the hooks are buckled with the turned-up edge of the barrel mouth of the brewing barrel.

2. The coffee machine brewer head according to claim 1, characterized in that The push rod assembly (1) includes an inner plug (102), a spring (104), an inner fixing sleeve (105) and an internal thread sleeve (106). The inner fixing sleeve and the internal thread sleeve form the sleeve. The inner fixing sleeve is arranged inside the internal thread sleeve with a gap therebetween. The inner diameter of the internal thread sleeve is provided with an internal thread, and the external thread at the threaded section (901) of the screw member (9) is connected to the internal thread of the internal thread sleeve. The end face of the connection between the inner fixing sleeve and the internal thread sleeve is integrally connected to the other end of the inner plug by screws and a central screw, and the spring is provided at the connection. The end face of the inner plug is provided with a filter screen (101). A first microswitch (107) is provided on one side of the central screw in the inner cavity of the inner fixing sleeve; when the push rod assembly presses down the coffee powder in the brewing barrel, the spring deforms, and the inner plug triggers the first microswitch through the central screw.

3. The coffee machine brewer head according to claim 2, wherein On one side of the outer diameter of the internal thread sleeve (106) of the push rod assembly (1) in the shell, there is a convex rib (1603). A second microswitch (6) is provided in the shell corresponding to the convex rib. The second microswitch is arranged in the shell through a microswitch support seat (5); when the push rod assembly moves to press the powder and / or open the claw assembly (2), the push rod assembly triggers the second microswitch.

4. The coffee machine brewer head according to claim 2, characterized in that On both sides of the deep groove rib (1062) of the internal thread sleeve (106) of the push rod assembly (1), there are wing edge grooves, and the wing edge grooves are integrally connected to the flat key edges on both sides of the guide rib (1061) of the internal thread sleeve. The flat key edges of the internal thread sleeve move up and down corresponding to the guide grooves (401) in the shell; on the other end elbow of the hook (201) of the claw assembly (2), there is a roller (203), and when the outer diameter or the groove at the outer diameter of the roller abuts against the guide rib of the push rod assembly (1) and moves up and down, it rolls.

5. The coffee machine brewer head according to claim 1, characterized in that The outer flanged edge of the brewing barrel (15) is square, and outer grooves (1501) in the shape of upwardly inclined lifting buckles are symmetrically provided on both sides of the bottom of the outer flanged edge of the brewing barrel. The shapes of the outer grooves of the brewing barrel respectively correspond to and engage with the hook head shapes at the hooks (201) of the hook claw assembly (2), and an arc-shaped edge is provided at the end of the hook head of the hook claw assembly.

6. The coffee machine brewer head according to claim 5, characterized in that Limit posts are symmetrically provided on both sides of the outer diameter below the outer grooves (1501) of the brewing barrel (15). When the brewing barrel is lifted by the inner swing rod member of the brewing seat assembly and engaged with the hook head at the hook (201) of the hook claw assembly (2), the limit posts of the brewing barrel abut against and are limited by the top shell opening at the outer shell of the brewing seat assembly.

7. The coffee machine brewer head according to claim 1, characterized in that A first bearing (8) and a second bearing (10) are respectively provided in the upper and lower circular grooves of the large gear (902) of the screw member (9) in the shell body. A washer (3) is provided on the end face of the step below the outer convex platform at the outer side of the push rod assembly (1) at the bottom of the shell body. The hook (201) of the hook claw assembly (2) swings out of the opening on one side of the convex platform at the step of the shell body.

8. The coffee machine brewer head according to claim 7, characterized in that The shell body includes a shell base (4), a shell cover (7) and a top cover (11). The shell base, the shell cover and the top cover are sequentially connected and integrated by screws and nuts at the end corners. At the same time, the first bearing (8) is encapsulated in the shell body through the top cover. One side of the gear assembly (12) inside the connection between the shell base and the shell cover is aligned with the openings at the shell base and the shell cover. A gear assembly and a stepping motor (13) are provided on the outer diameter of the shell base on one side of the opening. The stepping motor is arranged on the motor seat on one side of the shell base, and the motor shaft of the stepping motor is connected to the first gear of the gear assembly. One side of the first gear of the gear assembly meshes with one side of the second gear, and the other side of the second gear extends into the shell body and meshes with the second gear of the gear assembly. The hook claw assemblies (2) are respectively provided in the notch openings on both sides of the convex platform at the bottom of the shell base.

9. The coffee machine brewer head according to claim 1, characterized in that When the stepping motor (13) drives the push rod assembly (1) to press down into the brewing barrel (15) to realize powder pressing through the gear assembly (12), the slag discharging rod at the inner bottom of the brewing barrel drives the push rod assembly to move through the transmission motor on one side of the brewing seat assembly.

10. The coffee machine brewer head according to claim 1, characterized in that The hook claw assemblies (2) symmetrically arranged on both sides below the shell body of the machine base assembly (14) are omitted.

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