Claw-type coffee machine brewing unit

Abstract

A claw-type coffee machine brewing unit, wherein two sides of a threaded section of a screw assembly (9) of the brewing unit are symmetrically provided with guide grooves (9031); the guide grooves (9031) are deep recesses (9032) at a brewing base assembly (14) end thereof, while the guide grooves are shallow recesses at the threaded section of the screw assembly (9); opposite ends of hook portions (201) of a claw assembly (2) are bent toward inner sides of hook heads and are respectively provided with bent heads; a roller (203) is provided at each bent head; the hook heads of the claw assembly (2) each have one end maintained in an outwardly flared state by means of the action of a torsion spring (202), and the bent head at the other end of each hook head abuts against the outer diameter of the screw assembly (9), while positioning tabs (301) at two sides of a central hole in a housing are inserted into the guide grooves (9031) at the two sides of the threaded section of the screw assembly (9) to provide positioning for up and down movement; when the screw assembly (9) is screwed into a brewing chamber (1) by means of the action of a stepping motor (12), the rollers (203) are located in the shallow recesses, and the hook heads of the hook portions (201) latch onto an outer flange of a chamber mouth of the brewing chamber (1).

Description

Claw coffee machine brewer

[0001] Reference of Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202411370825.2, filed on September 29, 2024, and entitled “Claw coffee machine brewer”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to a coffee machine brewer, and is a claw coffee machine brewer. BACKGROUND

[0004] A coffee machine is a household or commercial electric appliance that can automatically make coffee by grinding, pressing, loading, brewing, and removing residues. The core component of some existing fully automatic coffee machines is a brewer, which is used for powder receiving, pressing, brewing, brewing, and residue removal. The brewer generally consists of a brewing barrel assembly and a brewing head assembly. The powder pressing and brewing mechanism is arranged in the brewing head assembly. When the brewing barrel assembly is located on one side, powder receiving is achieved. When the barrel body of the brewing barrel assembly is rotated to the side of the brewing sleeve assembly, powder pressing, brewing, brewing, and residue removal are achieved. After that, 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 use a large gear and a screw rod to drive the up-and-down movement. For example, the Chinese patent document No. 202410298852.7, published on May 7, 2024, and entitled “Large-dose coffee machine automatic extraction brewing brewer”. Some other coffee machine brewers use a claw structure design. For example, the Chinese patent document No. 202410707362.8, published on August 2, 2024, and entitled “Coffee machine brewer powder pressing brewing device”. The above-mentioned structure realizes the locking hook to be buckled or separated from the barrel opening of the brewing barrel and the sealing of the push head of the screw rod and the barrel opening of the brewing barrel when the structure moves up and down. The powder pressing in the brewing barrel is mainly realized by the push rod in the brewing barrel. However, the locking hook remains in the buckled position, which may cause jamming and other problems. In addition, the production and assembly are not convenient, the production cost is high, and the volume is large. SUMMARY

[0005] To overcome the above-mentioned deficiencies, the purpose of the present application is to provide a claw coffee machine brewer to the field, which solves the technical problems of poor production and assembly, high production cost, and large volume caused by the poor structure design of existing similar products, especially the poor stability, long stroke, high cost, and large volume caused by the connection of the screw rod part and the top structure design of the gear assembly in similar products. The purpose is achieved through the following technical solutions.

[0006] The application discloses a hook type coffee machine brewer, which comprises a brewing head assembly and a brewing seat assembly, a liquid outlet hole is arranged in a screw rod assembly of the brewing head assembly, an O-shaped ring is arranged on the outer diameter of a powder pressing part at one end of the screw rod assembly, an adjusting gear is arranged on the outer diameter of a threaded section of the screw rod assembly, the adjusting gear is fixedly arranged in a shell, the outer diameter of the threaded section of the screw rod assembly in a central hole of the shell is in thread engagement with the inner diameter of the adjusting gear, an external gear ring on one side of the adjusting gear is in engagement with a gear assembly extending into one side of the shell, a driving gear of the gear assembly is connected with a motor shaft of a stepping motor on one side of the shell, claw assemblies are symmetrically arranged below the shell, and a brewing barrel is arranged in the brewing seat assembly; when the brewing barrel in the brewing seat assembly is aligned with the screw rod assembly of the brewing head assembly on one side, the brewing barrel in the brewing seat assembly is lifted through a swing rod in the brewing assembly, the barrel opening of the brewing barrel is in abutment or alignment with the end face of the bottom of the shell of the brewing head assembly, the hook at one end of the claw assembly is buckled with the outer turning edge at the barrel opening of the brewing barrel, meanwhile, the stepping motor drives the screw rod assembly to move up and down in the brewing barrel through the gear assembly and the adjusting gear to realize powder pressing, and the pin shaft in the middle of the hook of the claw assembly is respectively provided with a torsional spring. The structural design points are that the threaded section of the screw rod assembly is symmetrically provided with guide grooves on both sides, the guide groove on one end of the brewing seat assembly is a deep groove, the guide groove at the threaded section of the screw rod assembly is a shallow groove, the other end of the hook of the claw assembly is bent towards the inner side of the hook head and is respectively provided with a bent head, the hook head of the claw assembly is kept open at one end by the action of the torsional spring, the other end of the bent head is in abutment with the outer diameter of the screw rod assembly, meanwhile, the positioning columns on both sides of the central hole in the shell are inserted into the guide grooves on both sides of the threaded section of the screw rod assembly to realize up and down movement; when the bent head is embedded in the deep groove of the guide groove on both sides of the screw rod assembly, the hook head of the hook is separated from the outer turning edge of the barrel opening of the brewing barrel; when the screw rod assembly is rotated into the brewing barrel by the action of the stepping motor, the bent head is located in the shallow groove of the guide groove on both sides of the screw rod assembly, and the hook head of the hook is buckled with the outer turning edge of the barrel opening of the brewing barrel. Therefore, according to the above structure, when the powder brewing in the brewing barrel is finished, the screw rod assembly returns to the initial position, the bent head at the hook of the claw assembly returns to the deep groove position of the guide groove of the screw rod assembly, the hook head at the hook of the claw assembly returns to the open state, the hook is separated from the outer turning edge of the barrel opening of the brewing barrel, and the brewing barrel returns to the initial powder receiving position through the swing motor on one side of the brewing seat assembly. The slag guide plate is arranged on one side of the barrel opening of the brewing barrel on one side of the brewing seat assembly according to the need, the powder scraping plate is arranged on one side of the brewing head assembly above the barrel opening of the brewing barrel at the powder receiving position of the brewing seat assembly, and the brewing head assembly and the brewing seat assembly are connected into one body through the outer diameter connecting plate. Meanwhile, the screw rod head and the screw rod sleeve of the screw rod assembly are integrally formed or are separately arranged with the spring to improve the buffering property and the stroke real-time monitoring of the second micro switch.

[0007] The screw assembly includes a screw head, a screw sleeve and a spring, the threaded segment is arranged at the outer diameter of the screw sleeve of the screw assembly, the outer diameter of the end of the screw head protruding from the screw sleeve is provided with the O-ring, the end face of the screw head at the end is provided with a filter core mesh, the other end of the screw head inside the screw sleeve is sealingly fitted with the lower inner cavity of the screw sleeve and is provided with the spring, the center screw of the upper inner cavity of the screw sleeve is connected with the center column of the screw head in the lower inner cavity at one end, and the other end of the center screw of the upper inner cavity of the screw sleeve is provided with a second micro switch on one side; when the screw head presses the coffee powder in the brewing barrel, the spring is deformed, the screw head is partially received in the screw sleeve, and the center screw triggers the second micro switch.

[0008] The outer flange of the barrel mouth of the brewing barrel is square, the outer groove of the upwardly inclined lifting buckle groove is symmetrically arranged at the bottom of the outer flange of the barrel mouth of the brewing barrel, limit columns are symmetrically arranged at the two sides of the brewing barrel below the outer groove, the limit columns of the brewing barrel lifted by the brewing seat assembly abut against the top shell opening of the shell of the brewing seat assembly when the outer groove is correspondingly buckled with the hook head of the hook assembly, and the end of the hook head of the hook assembly is provided with a corresponding arc-shaped edge. The above structure increases the contact surface of the hook head of the hook assembly at the outer flange of the brewing barrel and the groove shape, and the stability when the two are buckled is better.

[0009] The crank of the hook assembly is provided with a roller, and the roller is arranged to roll when positioned to move up and down in the guide groove of the screw assembly. Thus, the roller further limits the transition between the deep groove and the shallow groove in the guide groove.

[0010] When the step motor moves the screw assembly into the brewing barrel to press the powder, the push rod at the bottom of the brewing barrel moves to the side of the screw assembly through the transmission motor on one side of the brewing seat assembly. The above structure is a structural design for the push rod to further move upward to press the powder in cooperation with the screw assembly, and the powder pressing effect is better. It can also be realized by the screw assembly alone.

[0011] The first bearing and the second bearing are respectively arranged at the hole openings at the two ends of the adjustment gear in the shell, and the inner diameters of the inner rings of the first bearing and the second bearing are respectively fitted with the protruding rings at the hole openings at the two ends of the adjustment gear. The above structure improves the stability of the rotation of the adjustment gear in the shell.

[0012] At least one micro switch assembly is arranged at the shell on one side of the outer diameter of the screw assembly, the screw assembly triggers the first micro switch of the micro switch assembly when the screw assembly moves to press the powder and / or open the hook assembly, and the end of the threaded segment of the screw assembly is provided with a notch corresponding to the moving piece of the first micro switch.

[0013] The shell comprises a shell base and a shell cover, the top of the shell base and the bottom of the shell cover are connected by a screw rod and a nut at the end corner, the adjusting gear inside the connecting part is aligned with the opening on one side of the shell base and the shell cover, the outer diameter of the shell base on one side of the opening is provided with a gear assembly and a motor base, a stepping motor is arranged in the motor base, the motor shaft of the stepping motor is connected with a first gear of the gear assembly, the first gear of the gear assembly is engaged with a second gear on one side, the other side of the second gear extends into the shell and is engaged with the external gear ring on one side of the adjusting gear, the shell base is provided with the hook assembly in the groove on both sides of the bottom, the screw rod assembly extends into the inner diameter of the adjusting gear while extending out of the bottom of the shell base. The above is a specific structural embodiment of the shell, in order to facilitate the installation of the stepping motor, the gear assembly, the hook assembly, the screw rod assembly and the adjusting gear, other structural forms can also be used.

[0014] The screw rod assembly of the brewing head assembly is symmetrically provided with two liquid outlet holes, the two liquid outlet holes are an American coffee liquid outlet hole and an Italian coffee liquid outlet hole respectively, and the liquid outlet pipes at the liquid outlet holes respectively extend out of the pipeline frame on the top of the shell of the brewing head assembly.

[0015] The present application has reasonable structure design, various structure forms, convenient production and assembly, small size, low cost, and good stability when the brewing barrel is hooked in the powder state; it is suitable for use as a hook type coffee machine brewer and further improvement of similar products. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is an exploded structural schematic diagram of the main structure part of the present application.

[0017] Fig. 2 is an enlarged internal plan view structural schematic diagram of the shell base of Fig. 1.

[0018] Fig. 3 is a stereoscopic structural schematic diagram of the initial state after assembly of Fig. 1.

[0019] Fig. 4 is a sectional view structural schematic diagram of Fig. 3, in which part A is framed.

[0020] Fig. 5 is an enlarged view of part A of Fig. 4.

[0021] Fig. 6 is an internal structure schematic diagram of Fig. 3, in which the shell of the brewing head assembly and the shell on one side of the brewing seat assembly are omitted, and the dashed line is a structural schematic diagram of the screw rod assembly.

[0022] Fig. 7 is an enlarged internal structure schematic diagram of the screw rod assembly of Fig. 6, in which the dashed line is a screw rod sleeve of the screw rod assembly.

[0023] Fig. 8 is another side stereoscopic structural schematic diagram of Fig. 3.

[0024] Fig. 9 is a top structure schematic diagram of the brewing head assembly of Fig. 8.

[0025] Figure 10 is a schematic diagram of the powder receiving and pressing state of the structure of Figure 4, in which the dashed line represents the state of the screw assembly and the hook assembly before pressing powder, and part B is framed.

[0026] Figure 11 is an enlarged view of part B of Figure 10, in which the dashed line represents the state of the hook assembly when the hook head is detached.

[0027] Figure 12 is a schematic diagram of the structure of Figure 11 when the bottom hook head is detached.

[0028] Figure 1 is a brewing barrel, 101 is an outer groove, 102 is a limiting column, Figure 2 is a hook assembly, 201 is a hook, 202 is a torsional spring, 203 is a roller, Figure 3 is a shell seat, 301 is a positioning column, Figure 4 is a first bearing, Figure 5 is an adjusting gear, Figure 6 is a second bearing, Figure 7 is a shell cover, Figure 8 is a micro switch assembly, 801 is a first micro switch, Figure 9 is a screw assembly, 901 is an O-ring, 902 is a screw head, 903 is a screw sleeve, 9031 is a guide groove, 9032 is a deep groove, 904 is a spring, 905 is a central screw, 906 is a second micro switch, Figure 10 is a pipeline rack, Figure 11 is a motor seat, Figure 12 is a stepping motor, Figure 13 is a gear assembly, Figure 14 is a brewing seat assembly, Figure 15 is a push rod, and Figure 16 is a powder scraping plate. DETAILED DESCRIPTION

[0029] The structure and use of the present application will be further described in combination with the drawings. As shown in FIGS. 1-12, the brewer comprises a brewing head assembly and a brewing seat assembly 14, the screw assembly 9 of the brewing head assembly is provided with a liquid outlet hole, the outer diameter of the powder pressing part at one end of the screw assembly is provided with an O-ring 901, the outer diameter of the threaded segment of the screw assembly is provided with an adjusting gear 5, the adjusting gear is fixedly arranged in the housing, the outer diameter of the threaded segment of the screw assembly in the central hole of the housing is in mesh with the inner thread of the adjusting gear, the outer gear ring on one side of the adjusting gear is in mesh with the gear assembly 13 extending into the housing on one side, the driving gear of the gear assembly is connected with the motor shaft of the stepping motor 12 on one side of the housing, the hook assembly 2 is symmetrically arranged on both sides below the housing, and the brewing barrel 1 is arranged in the brewing seat assembly; when the brewing barrel in the brewing seat assembly is aligned with the screw assembly of the brewing head assembly by rotating to one side, the brewing barrel in the brewing seat assembly is lifted by the swing lever in the brewing assembly, the barrel opening of the brewing barrel is abutted or aligned with the end face of the bottom of the housing of the brewing head assembly, the hook 201 at one end of the hook assembly is buckled with the outer flange at the barrel opening of the brewing barrel at the same time, the stepping motor drives the screw assembly to move up and down to realize powder pressing through the gear assembly and the adjusting gear, and the pin shaft in the middle of the hook of the hook assembly is respectively provided with a torsion spring 202. The threaded segment of the screw assembly is symmetrically provided with a guide groove 9031 on both sides, the brewing seat assembly end of the guide groove is a deep groove 9032, the guide groove at the threaded segment of the screw assembly is a shallow groove, the other end of the hook of the hook assembly is bent inward to the hook head and is respectively provided with a elbow, the elbow is respectively provided with a roller 203, and the roller is arranged to roll when positioned to move up and down in the guide groove 9031 of the screw assembly in the longitudinal direction; the hook head of the hook assembly is kept to be opened outward at one end by the action of the torsion spring, the elbow at the other end of the hook head is abutted with the outer diameter of the screw assembly at the same time, and the positioning column 301 on both sides of the central hole in the housing is inserted into the guide grooves on both sides of the threaded segment of the screw assembly to position to move up and down; when the elbow is embedded in the deep groove of the guide grooves on both sides of the screw assembly, the hook head of the hook is separated from the outer flange of the barrel opening of the brewing barrel; when the screw assembly is rotated into the brewing barrel by the action of the stepping motor, the elbow is located in the shallow groove of the guide grooves on both sides of the screw assembly, and the hook head of the hook is buckled with the outer flange of the barrel opening of the brewing barrel.

[0030] Specifically: the screw assembly includes screw head 902, screw sleeve 903 and spring 904, the thread segment is provided at the outer diameter of the screw sleeve of the screw assembly, the outer diameter of the end of the screw head extending out of the screw sleeve is provided with the O-ring, the end face of the screw head is provided with the filter core mesh, the other end of the screw head in the screw sleeve is sealed and fitted with the spring between the lower inner cavity of the screw sleeve, the center screw 905 of the upper inner cavity of the screw sleeve is connected with the center column of the screw head in the lower inner cavity, and the other end of the center screw of the upper inner cavity of the screw sleeve is provided with a second micro switch 906 on one side; when the screw head presses the coffee powder in the brewing barrel, the spring is deformed, the screw head is partially inserted into the screw sleeve, and the center screw triggers the second micro switch. The outer flange of the brewing barrel is square, the outer groove 101 in the form of an upward inclined lifting buckle groove is symmetrically arranged at the bottom of the outer flange of the brewing barrel, the brewing barrel is symmetrically provided with a limiting column 102 below the outer groove, the shape of the outer groove corresponds to the shape of the hook head of the hook assembly, the hook head of the hook assembly is buckled and engaged, the limiting column of the brewing barrel of the brewing seat assembly is limited and positioned against the top shell opening of the shell of the brewing seat assembly, and the end of the hook head is provided with a corresponding arc-shaped edge.

[0031] When the above-mentioned stepping motor moves the screw assembly into the brewing barrel to press the powder, the push rod 15 at the bottom of the brewing barrel moves to the side of the screw assembly through the transmission motor of the brewing seat assembly. The first bearing 4 and the second bearing 6 are respectively arranged at the hole openings of the two ends of the adjusting gear with the outer diameter of the screw assembly in the shell, and the inner diameters of the inner rings of the first bearing and the second bearing are respectively fitted with the convex rings at the hole openings of the two ends of the adjusting gear. At least one micro switch assembly 8 is arranged at the shell on one side of the outer diameter of the screw assembly, when the screw assembly moves to press the powder and / or open the hook assembly, the first micro switch 801 of the micro switch assembly is triggered by the screw assembly, and the end of the thread segment of the screw assembly is provided with a notch corresponding to the moving tab of the first micro switch; when the screw assembly is pressed into the brewing barrel, the moving tab of the first micro switch is located in the notch at the end of the thread segment of the screw assembly, and the first micro switch is turned off. The shell includes a shell seat 3 and a shell cover 7, the top of the shell seat and the bottom of the shell cover are connected into one body through the screw and nut at the end corner, the side of the adjusting gear in the connection is aligned with the opening of the shell seat and the shell cover, the outer diameter of the shell seat on one side of the opening is provided with a gear assembly 13 and a motor seat 11, the stepping motor is arranged in the motor seat, the motor shaft of the stepping motor is connected with the first gear of the gear assembly, the first gear of the gear assembly is meshed with the second gear on one side, the other side of the second gear is meshed with the outer gear ring on one side of the adjusting gear extending into the shell, and the shell seat is provided with the hook assembly in the grooves on both sides of the bottom.

[0032] The screw assembly of the brewing head assembly is symmetrically provided with one or two liquid outlets, and the two liquid outlets are an American coffee liquid outlet and an Italian coffee liquid outlet respectively. The liquid outlet pipe at the one or two liquid outlets extends out of the top pipe rack 10 of the shell of the brewing head assembly.

[0033] The specific operations of the powder receiving state, the powder pressing brewing state and the residue discharging state of the brewing device are as follows: in the powder receiving state, the swing motor drives the brewing barrel of the brewing seat assembly to return to the original position after being powered on, and the barrel opening of the brewing barrel is vertically upward and aligned with the powder receiving port in the coffee machine; at the same time, the transmission motor drives the push rod of the brewing seat assembly to return to the original position after being powered on, so that an open type cavity is formed in the brewing barrel, waiting for powder receiving, and then the powder receiving action is completed. In the powder pressing brewing state, the swing motor drives the brewing barrel of the brewing seat assembly to the side of the brewing head assembly after being powered on, and the barrel opening of the brewing barrel is vertically upward and aligned with the screw assembly and the brewing barrel is lifted, the screw assembly is driven to move downward by the stepping motor, so that the screw assembly is sleeved into the brewing barrel, at the same time, the hook of the hook assembly is swung by the screw assembly, the hook head of the hook is buckled with the outer flange of the barrel opening of the brewing barrel, at this time, the push 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, hot water from the boiler of the coffee machine is used for coffee extraction brewing. In the residue discharging state, when the screw assembly is driven to move upward and reset by the stepping motor, the hook of the hook assembly swings and resets and is separated from the outer flange of the barrel opening of the brewing barrel, the brewing barrel of the brewing seat assembly is driven by the swing motor, and the push rod in the brewing barrel of the brewing seat assembly is driven to push out the coffee residue cake from the brewing barrel after being powered on by the transmission motor, the coffee residue cake is dropped by the residue discharging plate, and the residue discharging action is completed.

[0034] The above is intended to explain the technical means of the present application, not to limit the technical scope of the present application. Those skilled in the art can make obvious improvements or replacements to the present application combined with the existing common knowledge, which also falls within the protection scope of the claims of the present application.

Claims

1. A hook coffee machine brewer, the brewer comprising a brewing head assembly and a brewing seat assembly (14), the brewing head assembly is provided with a liquid outlet hole in the screw assembly (9), the outer diameter of the powder pressing end of the screw assembly is provided with an O-ring (901), the outer diameter of the threaded section of the screw assembly is provided with an adjusting gear (5), the adjusting gear is fixedly arranged in the housing, the outer diameter of the threaded section of the screw assembly in the center hole of the housing is in threaded engagement with the inner diameter of the adjusting gear, the outer gear ring on one side of the adjusting gear is in engagement with one side of the gear assembly (13) extending into the housing, the driving gear of the gear assembly is connected with the motor shaft of the step motor (12) on one side of the housing, the hook assembly (2) is symmetrically arranged on both sides below the housing, and the brewing barrel (1) is arranged in the brewing seat assembly; when the brewing barrel in the brewing seat assembly is aligned with the screw assembly of the brewing head assembly by rotating to one side, the brewing barrel in the brewing seat assembly is lifted by the swing lever in the brewing assembly, the barrel opening of the brewing barrel is abutted or aligned with the end face of the bottom of the housing of the brewing head assembly, the hook (201) of the hook assembly is buckled with the outer flange at the barrel opening of the brewing barrel at one end, the step motor drives the screw assembly to move up and down to press the powder in the brewing barrel through the gear assembly and the adjusting gear, and the pin shaft in the middle of the hook is respectively provided with a torsion spring (202). The screw assembly (9) is symmetrically provided with guide grooves (9031) on both sides of the threaded segment, the brewing seat assembly (14) is provided with a deep groove (9032) at one end of the guide groove, the guide groove at the threaded segment of the screw assembly is a shallow groove, the hook (201) of the hook assembly (2) is bent towards the inside of the hook head at the other end, and the hook head of the hook assembly is respectively provided with a hook at the other end, the hook head of the hook assembly is kept open at one end by the action of the torsion spring (202), the hook head at the other end is in contact with the outer diameter of the screw assembly, and at the same time, the positioning column (301) on both sides of the central hole in the shell is inserted into the guide groove on both sides of the threaded segment of the screw assembly to position and move up and down; when the hook head of the hook is separated from the outer flange of the barrel mouth of the brewing barrel (1), the hook head of the hook is separated from the outer flange of the barrel mouth of the brewing barrel (1); when the screw assembly is rotated into the brewing barrel by the action of the stepping motor (12), the hook head of the hook is engaged with the outer flange of the barrel mouth of the brewing barrel.

2. The pronged coffee maker brewer of claim 1, wherein The screw assembly (9) includes a screw head (902), a screw sleeve (903) and a spring (904), the threaded segment is provided on the outer diameter of the screw sleeve of the screw assembly, the outer diameter of the screw head at one end of the screw sleeve is provided with the O-ring (901), the end face of the screw head at this end is provided with a filter element net, the other end of the screw head in the screw sleeve is sealingly fitted with the lower inner cavity of the screw sleeve and is provided with the spring, the center screw (905) in the upper inner cavity of the screw sleeve is connected with the center column of the screw head in the lower inner cavity at one end, and the other end of the center screw in the upper inner cavity of the screw sleeve is provided with a second micro switch (906) on one side; when the screw head presses the coffee powder in the brewing barrel (1), the spring is deformed, the screw head is partially inserted into the screw sleeve, and the center screw triggers the second micro switch.

3. The pronged coffee maker brewer of claim 1, wherein The outer flange of the barrel mouth of the brewing barrel (1) is square, the outer flange of the barrel mouth of the brewing barrel is symmetrically provided with an outer groove (101) in the form of an upward inclined lifting buckle groove at the bottom on both sides, the brewing barrel is symmetrically provided with a limiting column (102) below the outer groove, the shape of the outer groove corresponds to the shape of the hook head of the hook assembly (2) when the hook head of the hook assembly is engaged, the limiting column of the brewing barrel is in contact with the top shell opening of the brewing seat assembly, and the end of the hook head of the hook assembly is provided with a corresponding arc-shaped edge.

4. The pronged coffee maker brewer of claim 1, wherein The hook head of the hook assembly (2) is provided with a roller (203), the roller is longitudinally positioned and moves up and down in the guide groove (9031) of the screw assembly (9).

5. The pronged coffee maker brewer of claim 1, wherein When the stepping motor (12) drives the screw assembly (9) to move towards the brewing barrel (1) to realize powder pressing through the gear assembly (13) and the adjusting gear (5), the push rod (15) at the bottom of the brewing barrel moves towards one side of the screw assembly through the transmission motor on one side of the brewing seat assembly (14).

6. The pronged coffee maker brewer of claim 1, wherein The outer diameter adjusting gear (5) of the screw assembly (9) in the shell is respectively provided with a first bearing (4) and a second bearing (6) at the hole openings at both ends, and the inner diameters of the inner rings of the first bearing and the second bearing are respectively fitted with the convex rings at the hole openings at both ends of the adjusting gear.

7. The pronged coffee maker brewer of claim 1, wherein The housing on the outer diameter side of the screw assembly (9) is provided with at least one micro switch assembly (8), when the screw assembly moves to the powder pressing and / or opening of the claw assembly (2), the screw assembly triggers the first micro switch (801) of the micro switch assembly, and the threaded segment end of the screw assembly is provided with a notch at the moving piece of the first micro switch.

8. The pronged coffee maker brewer of claim 1, wherein The housing includes a shell seat (3) and a shell cover (7), the top of the shell seat and the bottom of the shell cover are connected by the screw and nut at the end corner, at the same time, the side of the adjusting gear (5) in the connection is aligned with the opening of the shell seat and the shell cover, the outer diameter of the shell seat on the side of the opening is provided with a gear assembly (13) and a motor base (11), a stepping motor (12) is arranged in the motor base, the motor shaft of the stepping motor is connected with the first gear of the gear assembly, the side of the first gear of the gear assembly is engaged with the side of the second gear, the other side of the second gear extends into the housing and is engaged with the external gear ring on the side of the adjusting gear, the slots on both sides of the bottom of the shell seat are respectively provided with the claw assembly (2), the screw assembly (9) extends into the inner thread of the adjusting gear from the top of the shell cover, and at the same time, the screw assembly extends out of the bottom of the shell seat.

9. The prong coffee maker brewer of claim 1, wherein The screw assembly (9) of the brewing head assembly is symmetrically provided with two liquid outlet holes, two liquid outlet holes are American coffee liquid outlet hole and Italian coffee liquid outlet hole respectively, and the liquid outlet pipes at the liquid outlet holes respectively extend out of the pipeline rack (10) of the shell of the brewing head assembly.

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