Brewing mechanism of coffee machine

Abstract

The invention provides a brewing mechanism of a coffee machine. The brewing mechanism comprises a supporting frame, a brewing head and a brewing device. The brewing head is fixed to the top of the rear side of the supporting frame, and a coffee powder feeding opening is formed in the top of the front side of the supporting frame. The coffee machine brewing mechanism is characterized in that the coffee machine brewing mechanism further comprises a movable frame and a linear power assembly, the movable frame is movably connected to the supporting frame, the brewing device is detachably connected to the movable frame, the linear power assembly is connected to the supporting frame, and the movable frame is in transmission connection with the linear power assembly; the linear power assembly is used for driving the moving frame to move relative to the supporting frame so that the brewing device can get close to and be connected to the brewing head in a sleeving mode and used for driving the moving frame to move relative to the supporting frame so that the brewing device can move to the position below the coffee powder feeding opening. According to the coffee machine, a complex swing arm structure does not need to be used for driving the brewing device to be switched between the brewing head and the lower portion of the coffee powder feeding opening, so that the structure of the coffee machine can be simplified, and the production cost of the coffee machine can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee machines, and in particular to a brewing mechanism of a coffee machine. Background Art

[0002] The coffee machine brewer is the core component of the coffee machine for brewing coffee powder. During the use of the coffee machine, the brewer needs to move back and forth between the bottom of the coffee powder inlet and the brewing head of the coffee machine, and in the current coffee machine structure on the market, the movement of the brewer needs to rely on a rotating drive assembly and a complex swing arm structure, that is, there are the disadvantages of complex coffee machine structure and high production cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a brewing mechanism for a coffee machine, which does not require a complex swing arm structure to drive the brewer to switch between a brewing head and below a coffee powder inlet, thereby simplifying the structure of the coffee machine and reducing the production cost of the coffee machine.

[0004] The present invention provides a brewing mechanism of a coffee machine, comprising a supporting frame, a brewing head and a brewer; the brewing head is fixed to the top of the rear side of the supporting frame, and a coffee powder introduction port is arranged on the top of the front side of the supporting frame; the coffee machine brewing mechanism is characterized in that: the coffee machine brewing mechanism also comprises a moving frame and a linear power assembly, the moving frame is movably connected to the supporting frame, the brewer is detachably connected to the moving frame, the linear power assembly is connected to the supporting frame, and the moving frame is transmission-connected to the linear power assembly; the linear power assembly is used to drive the moving frame to move relative to the supporting frame so that the brewer approaches and is sleeved onto the brewing head, and is used to drive the moving frame to move relative to the supporting frame so that the brewer moves to below the coffee powder introduction port.

[0005] By adopting the above structure, the present invention can switch the brewer between the brewing head and the bottom of the coffee powder feeding port under the driving action of the linear power assembly. That is, in the above structure, there is no need to use a complex swing arm structure, thereby simplifying the structure of the coffee machine and reducing the production cost of the coffee machine.

[0006] In a possible embodiment, the brewing mechanism of the coffee machine also includes a transmission member; an elongated hole extending in the axial direction of the brewing head is provided on the side wall of the supporting frame; the movable frame is arranged on one side of the supporting frame, and a connecting column is provided at the lower end of the movable frame and on the side facing the elongated hole, and the connecting column is rotatably inserted into the elongated hole and can move along the length direction of the elongated hole; the linear power assembly is arranged on the other side of the supporting frame and is rotatably connected to the supporting frame; the transmission member is rotatably inserted into the elongated hole and can move along the length direction of the elongated hole; one end of the transmission member is rotatably connected to the movable frame, and the other end of the transmission member is transmission-connected to the driving end of the linear power assembly; the middle part of the elongated hole is connected to an arc-shaped hole extending toward the front side of the supporting frame and used for the transmission member to slide into; the linear power assembly is used to drive the movable frame to move relative to the support frame So that the brewer is close to the brewing head along the axial direction of the brewing head and is sleeved with the brewing head, and is used to drive the brewer to move to the bottom of the coffee powder inlet and align it vertically with the coffee powder inlet; in addition, in order to prevent the connecting column from disengaging from the elongated hole, a baffle with an outer diameter greater than the connecting column can be fixed or set at the end of the connecting column away from the brewer assembly, and the baffle abuts against the outer wall of the other side of the support frame, thereby preventing the connecting column from disengaging from the elongated hole; under the driving action of the above-mentioned linear power assembly, and under the rotation and sliding cooperation of the connecting column and the transmission member with the elongated hole and the arc hole, the movable frame and the brewer can be switched between the brewing head and the bottom of the coffee powder inlet, that is, in the above-mentioned structure, there is no need to use a complex swing arm structure, thereby simplifying the structural complexity of the coffee machine and reducing the production cost of the coffee machine.

[0007] In a possible embodiment, the linear power assembly includes a housing, a driving motor, a gear assembly and a screw; the housing is arranged on the other side of the supporting frame and is rotatably connected to the supporting frame, the driving motor is fixed on the housing, one end of the screw is rotatably connected to the housing, the gear assembly is arranged inside the housing, and one end of the screw is transmission-connected to the driving motor via the gear assembly; a nut sleeve is fixed on the other end of the transmission member, the screw is inserted into the nut sleeve and is threadedly connected to the nut sleeve; after adopting this linear power assembly, when the driving motor drives the gear assembly to rotate forward and reverse, the gear assembly can drive the screw to rotate forward and reverse; when the screw When it rotates to one side, under the action of the threaded connection between the screw rod and the transmission member, the linear power assembly can drive the movable frame and the brewer to approach the brewing head along the axial direction of the brewing head and make the brewer and the brewing head sleeved, that is, the linear power assembly can drive the transmission member to slide from the arc hole to the elongated hole, and make the transmission member, the movable frame and the brewer move along the length direction of the elongated hole toward the side close to the brewing head, and finally make the brewer and the brewing head sleeved, at this time, the brewer and the brewing head can start to brew the coffee powder in the brewing cavity on the brewer; when the screw rod rotates to the other side, under the action of the threaded connection between the screw rod and the transmission member, In this case, the linear power assembly can drive the movable rack and the brewer to move along the length direction of the elongated hole toward the side away from the brewing head. In the process of the movable rack and the brewer moving along the length direction of the elongated hole toward the side away from the brewing head, when the connecting column abuts against the bottom of the elongated hole, the transmission member can just move to the rear end of the arc-shaped hole, and in the process of the linear power assembly continuously driving the movable rack and the brewer via the transmission member, the transmission member can slide into the arc-shaped hole from back to front, and finally the brewer can be moved to the bottom of the coffee powder inlet on the supporting frame and vertically aligned with the coffee powder inlet. At this time, the coffee The bean grinding mechanism can put the ground coffee powder from top to bottom into the brewing chamber on the brewer through the coffee powder feeding port; in addition, the first-stage gear in the gear assembly can be connected to the output gear on the drive motor by a transmission belt, and one end of the screw rod can be circumferentially limited and connected to the last-stage gear in the gear assembly by a limit key; in addition, under the action of the nut sleeve, the nut sleeve can be reliably connected to the screw rod thread, that is, the other end of the transmission member can be reliably connected to the screw rod thread, and in addition, the nut sleeve can be pressed on the other end of the transmission member by a pressure plate to tighten the nut sleeve and the transmission member.

[0008] In a possible embodiment, a first travel switch is connected to the outer wall on the other side of the support frame, and the first travel switch is electrically connected to the controller in the coffee machine; when the linear power assembly drives the movable frame to move and causes the transmission member to slide to the front end of the arc-shaped hole, the transmission member is used to trigger the trigger end of the first travel switch so that the first travel switch sends a trigger signal to the controller in the coffee machine; by adopting this structure, when the linear power assembly drives the movable frame and the brewer to move and causes the transmission member to slide to the front end of the arc-shaped hole, the transmission member can trigger the trigger end of the first travel switch so that the first travel switch sends a trigger signal to the controller in the coffee machine, that is, the linear power assembly can stop driving the movable frame and the brewer to continue moving, that is, the limiting effect on the movable frame and the brewer is achieved.

[0009] In a possible embodiment, magnets are evenly distributed circumferentially embedded on one of the gears in the gear assembly, a Hall sensor is fixed inside the housing, the Hall sensor is electrically connected to the controller in the coffee machine, and the magnet is used to trigger the Hall sensor; by adopting this structure, when the linear power assembly drives the movable frame and the brewer to move and causes the transmission member to slide to the front end of the arc hole, and after the transmission member triggers the trigger end of the first stroke switch so that the first stroke switch sends a trigger signal to the controller in the coffee machine, the drive motor can drive the lead screw to rotate back a certain number of times through the gear assembly, so that the linear power assembly drives the movable frame to move a certain distance from front to back along the arc hole, so as to further ensure that the brewer can be located below the coffee powder delivery port and vertically aligned with the coffee powder delivery port, and in addition, the number of times the drive motor drives the lead screw to rotate back through the gear assembly can be accurately controlled according to the number of times the magnet triggers the Hall sensor; in addition, triggering the Hall sensor by a magnet to control the number of rotations of the rotating component is an existing technology currently on the market, so it will not be described here.

[0010] In a possible embodiment, the brewing mechanism of the coffee machine also includes a first support seat; the first stroke switch is embedded in the first support seat, one end of the first support seat is rotatably connected to the outer wall on the other side of the support frame, and a first buffer structure is arranged between the other end of the first support seat and the outer wall on the other side of the support frame; after adopting this structure, since one end of the first support seat is rotatably connected to the outer wall on the other side of the support frame, and a first buffer structure is arranged between the other end of the first support seat and the outer wall on the other side of the support frame, when the linear power assembly drives the moving frame and the brewer to move and causes the transmission member to trigger the triggering end of the first stroke switch, under the action of the first buffer structure, the first support seat and the first stroke switch have a certain floating ability, thereby avoiding the first stroke switch from being damaged by the transmission member, that is, the service life of the first stroke switch can be extended; in addition, one end of the first support seat can be rotatably connected to the support frame by a screw, the screw is movably inserted into one end of the first support seat, and the screw is threadedly fastened to the support frame.

[0011] In a possible embodiment, the first buffer structure includes a first spring, a sliding cavity is provided on the outer wall on the other side of the support frame, the other end of the first support seat extends into the sliding cavity and is slidably connected to the sliding cavity, the first spring is provided in the sliding cavity, and the two ends of the first spring respectively abut against the inner wall of the sliding cavity and the side of the first support seat away from the transmission member; by adopting this structure, when the linear power assembly drives the moving frame and the brewer to move and the transmission member triggers the triggering end of the first travel switch, under the action of the first spring, the first support seat and the first travel switch have a certain floating ability, thereby preventing the first travel switch from being damaged by the transmission member, that is, the service life of the first travel switch can be extended.

[0012] In a possible embodiment, the brewer includes a shell assembly and a top slag plate, a brewing cavity is arranged on the inner side of the upper end of the shell assembly, and the top slag plate is vertically slidably connected in the brewing cavity; a push rod assembly for driving the top slag plate to move vertically is vertically fixed in the middle of the lower end of the top slag plate, and the lower end of the push rod assembly vertically moves through the bottom of the brewing cavity and then extends into the shell assembly located below the brewing cavity; a pushing assembly and a locking assembly are respectively arranged in the shell assembly located on both sides of the push rod assembly; the pushing assembly is used to push the push rod assembly upward to move the top slag plate upward; when the top slag plate moves upward, the locking assembly is used to lock the push rod assembly to keep the top slag plate in the state after being moved upward; By adopting the above structure, after the pushing assembly pushes the push rod assembly upward to move the top residue plate upward, the top residue plate can push the coffee residue out of the brewing chamber, and after the top residue plate moves upward, the locking assembly can lock the push rod assembly to keep the top residue plate in the state after moving upward, that is, the top residue plate cannot be freely retracted into the brewing chamber, so that in the process of the linear power assembly in the coffee machine driving the brewer to move and reset toward the bottom of the coffee powder inlet, the scraper plate on the support frame can reliably scrape off the coffee residue remaining on the top residue plate; in addition, arranging the scraper plate on the support frame is an existing structure in coffee machines currently on the market, so it will not be repeated here.

[0013] In a possible embodiment, the push rod assembly includes a push rod, a support plate, a second spring, a sealing ring and a pressure ring; the upper end of the push rod is fixed to the middle of the lower end of the top slag plate, the lower end of the push rod assembly vertically moves through the bottom of the brewing chamber and then extends into the shell assembly located below the brewing chamber and is fixed to the support plate, the second spring is sleeved on the outside of the push rod, the two ends of the second spring are respectively abutted against the support plate and the shell assembly located at the outer bottom of the brewing chamber, a downwardly concave groove is provided in the middle of the inner bottom of the brewing chamber, the sealing ring and the pressure ring are sequentially embedded in the groove from bottom to top, and the sealing ring is used to seal the gap between the outer wall of the push rod and the inner wall of the groove; after adopting this push rod assembly, when the push assembly pushes the push rod assembly upward, the push rod assembly The rod assembly can drive the top residue plate to move upward, at which time, the coffee residues in the brewing chamber can be pushed out of the brewing chamber, and at this time, the second spring in the top rod assembly can be compressed; when the pushing assembly releases the pushing state of the top rod assembly, and the locking assembly releases the locking state of the top rod assembly, under the action of the second spring, the top rod and the support plate can be driven to move downward and reset, and at this time, the top residue plate can also move downward and reset to the inner bottom of the brewing chamber; in addition, the sealing ring can be reliably pressed on the inner bottom of the groove under the action of the pressure ring, and the pressure ring is tightly matched with the inner wall of the groove. The sealing ring can seal the gap between the outer wall of the top rod and the inner wall of the groove to avoid leakage of coffee liquid between the top rod and the shell assembly.

[0014] In a possible embodiment, the push assembly includes a guide column and a sliding sleeve; the guide column is vertically fixed in a shell assembly located on one side of the push rod assembly, the sliding sleeve can be slidably sleeved on the outside of the guide column, a push block is provided on the outer wall of the sliding sleeve facing the push rod, a first lug is provided on the outer wall of the support plate, the first lug is supported on the push block, a slider is provided on the front side of the sliding sleeve, and a slide groove is provided on the front side of the shell assembly, and the slider vertically slides and fits in the slide groove; a blocking member is rotatably connected to the moving frame, and a first torsion spring is provided between the blocking member and the moving frame; when the linear power assembly drives the moving frame to move relative to the supporting frame so that the brewer approaches the brewing head along the axial direction of the brewing head, the slider is used to abut against the blocking end of the blocking member and drive the blocking member to rotate so that the blocking member releases the blocking of the slider, and when the slider passes over the blocking end of the blocking member, the first torsion spring is used to drive the blocking member to rotate and reset; when the linear power assembly drives the moving frame to move relative to the supporting frame so that the brewer moves away from the brewing head along the axial direction of the brewing head, the slider is used to abut against the blocking end of the blocking member. So that the blocking member pushes the sliding block upward; by adopting this pushing assembly, when the linear power assembly drives the movable frame to move relative to the supporting frame so that the brewer is away from the brewing head along the axial direction of the brewing head, the sliding block can abut against the blocking end of the blocking member, and the linear power assembly continues to drive the movable frame to move relative to the supporting frame so that the brewer is away from the brewing head along the axial direction of the brewing head, the blocking member can push the sliding block upward, at this time, the sliding sleeve can slide upward along the guide column, and under the cooperation of the push block and the first lug, the sliding sleeve can push the ejector rod assembly upward to move the top slag plate upward; when the linear power assembly drives the movable frame to move relative to the supporting frame so that the brewer is close to the brewing head along the axial direction of the brewing head, the sliding block can abut against the blocking end of the blocking member and drive the blocking member to rotate so that the blocking member releases the blocking of the sliding block, that is, the linear power assembly can reliably drive the movable frame to move relative to the supporting frame so that the brewer is close to the brewing head along the axial direction of the brewing head; the above-mentioned blocking member has the function of unidirectional limiting the sliding block.

[0015] In a possible embodiment, the locking assembly includes a rotating shaft and a second torsion spring; the rotating shaft is vertically arranged in a shell assembly located on one side of the push rod assembly and is rotatably connected to the shell assembly, the second torsion spring is sleeved on the outside of the lower end of the rotating shaft, and the two ends of the second torsion spring are respectively plugged into the outer wall of the rotating shaft and the shell assembly; a support platform is provided on the outer wall of the upper part of the rotating shaft, and an arc-shaped first guide surface is provided on one side of the lower end of the support platform, and a second lug is provided on the outer wall of the support plate; when the pushing assembly pushes the push rod assembly upward to move the top slag plate upward, the second lug is used to cooperate with the first guide surface to guide and drive the rotating shaft to rotate to one side so that the second lug moves to the top of the support platform; when the second lug moves to the top of the support platform, the second torsion spring is used to drive the rotating shaft to rotate to the other side The second lug is supported by the first guide surface and the second guide surface is provided on the outer wall of the upper part of the rotating shaft, and a second arc-shaped guide surface is provided on one side of the lower end of the rotating shaft; when the linear power assembly in the coffee machine drives the movable frame to move toward the side away from the brewing head and moves the brewer to the bottom of the coffee powder feeding port, the second guide surface is used to abut against the limit block located on the supporting frame and drive the rotating shaft to rotate to one side, so that the supporting platform releases the supporting state of the second lug; after adopting this locking assembly, when the pushing assembly pushes the ejector assembly upward to move the top residue plate upward, the second lug can cooperate with the first guide surface to guide and drive the rotating shaft to rotate to one side so that the second lug moves to the top of the supporting platform, and when the second lug After moving to the top of the support platform, the second torsion spring can drive the rotating shaft to rotate and reset toward the other side so that the support platform rotates to the bottom of the second lug and supports the second lug. Since the support platform supports the second lug, the push rod assembly and the top residue plate can be prevented from freely moving downward and resetting, that is, the locking of the push rod assembly and the top residue plate is achieved, thereby ensuring that the top residue plate can reliably push out the coffee residues in the brewing chamber, and in the process of the scraper plate on the support frame scraping the coffee residues remaining on the top residue plate, the top residue plate can be prevented from freely moving downward and resetting, that is, the reliability of the scraper plate scraping the coffee residues remaining on the top residue plate can be improved; when the linear power assembly drives the movable frame and the brewer to move toward the side away from the brewing head and on the movable frame When the connecting column abuts against the bottom of the elongated hole, in the process of the linear power assembly continuously driving the movable frame and the brewer, the movable frame, i.e. the brewer, can rotate relative to the support frame toward the bottom of the coffee powder feeding port. At this time, the second guide surface can abut against the limit block located on the support frame and drive the rotating shaft to rotate to one side. At this time, the support table can release the supporting state of the second lug. When the support table releases the supporting state of the second lug, the push rod assembly can drive the top residue plate to move downward and finally reset. In addition, when the linear power assembly drives the movable frame and the brewer to move toward the side close to the brewing head next time, the limit block located on the support frame can release the pushing state of the protrusion. At this time, the second torsion spring can drive the rotating shaft to rotate and reset to the other side.

[0016] In a possible embodiment, a supporting rib extending spirally along the axial direction of the rotating shaft is provided in the middle portion of the rotating shaft; when the second lug is detached from the supporting platform, the supporting rib is used to abut against the second lug and make the second lug move from top to bottom along the supporting rib to play a buffering role for the push rod assembly and the top slag plate; after adopting this structure, when the second lug is detached from the supporting platform, so that the push rod assembly drives the top slag plate to move downward and reset, the second lug can first fall on the supporting rib, that is, the supporting rib can abut against the second lug, and then in the process of the second torsion spring driving the rotating shaft to rotate and reset to the other side, the second lug can move from top to bottom along the supporting rib to play a buffering role for the push rod assembly and the top slag plate, and finally after the second torsion spring drives the rotating shaft to rotate and reset to the other side, the second lug can detach from the supporting rib from the lower end of the supporting rib; in the above structure, since the supporting rib can play a buffering role for the push rod assembly and the top slag plate, the noise and abnormal sound during the reset of the push rod assembly and the top slag plate can be effectively eliminated.

[0017] In a possible embodiment, the brewing head includes a fixed part and a movable part, the fixed part is fixed to the top of the rear side of the supporting frame, the movable part is sleeved on the lower end of the fixed part and can move vertically relative to the fixed part; a spring group is embedded between the movable part and the fixed part, and the spring group is used to apply elastic force to the movable part to drive the movable part to move downward and reset; the brewing head also includes a water valve, the water valve is fixed to the upper end of the fixed part, the water inlet end of the water valve is used to be connected to the hot water supply unit in the coffee machine, and the water outlet end of the water valve is used to be connected to the brewer; the valve stem of the water valve abuts against the upper end of the movable part, and when the movable part moves upward relative to the fixed part, the movable part is used to push the valve stem to open the water valve; a third spring is arranged between the valve stem of the water valve and the valve body of the water valve, and when the movable part moves downward relative to the fixed part, the third spring is used to drive the valve stem to move downward so that the flow rate of the water valve gradually decreases until it is closed; after adopting the above structure, when it is needed When brewing coffee powder, the brewing chamber in the brewer can gradually approach the brewing head and fit with the brewing head. When the brewing chamber continues to approach the brewing head, the movable part in the brewing head can move upward relative to the fixed part. At this time, the movable part can push the valve stem to open the water valve, thereby allowing the hot water from the hot water supply unit to enter the brewer. That is, through the setting of the water valve, when the movable part in the brewing head is pushed upward, the water valve can automatically allow the hot water from the hot water supply unit to enter the brewer, thereby making the structure of the coffee machine simpler and having the advantages of convenient control and low cost. In addition, when the brewing chamber in the brewer of the coffee machine gradually separates from the brewing head, that is, when the movable part moves downward relative to the fixed part, the third spring can drive the valve stem to move downward to gradually reduce the flow rate of the water valve until it is closed, that is, the hot water supply unit can stop supplying hot water to the brewer of the coffee machine.

[0018] In a possible implementation, a support member is sleeved on the lower end of the valve stem, the support member is engaged with the valve stem, and the third spring is sleeved on the outside of the valve stem, and the two ends of the third spring are respectively abutted against the valve body and the support member; by adopting this structure, with the cooperation of the support member and the valve body, a reliable support effect on the third spring can be achieved, so that when the movable member moves downward relative to the fixed member, the third spring can reliably drive the valve stem to move downward to close the water valve.

[0019] In a possible embodiment, an annular groove is provided on the outer wall of the valve stem, and an annular clamping block is provided on the inner wall of the upper end of the support member, and the annular clamping block is engaged with the annular groove; by adopting this structure, under the engaged engagement of the annular clamping block and the annular groove, the support member can be reliably assembled with the valve stem, that is, it has the advantage of convenient assembly of the support member and the valve stem.

[0020] In a possible embodiment, the brewing head also includes a second stroke switch; the second stroke switch is located on the inner side of the upper end of the fixed part, the second stroke switch is connected to the fixed part, the second stroke switch is electrically connected to the controller in the coffee machine, and a boss is provided on the outer top of the movable part; when the controller in the coffee machine drives the linear power assembly to make the linear power assembly drive the movable frame to move relative to the support frame and make the brewer push the movable part to move upward to the limit position, the boss is used to trigger the trigger end of the second stroke switch to make the controller stop driving the linear power assembly; when the controller in the coffee machine drives the linear power assembly to make the linear power assembly drive the brewer to push the movable part to move upward to the limit position, the boss can trigger the trigger end of the second stroke switch to make the controller stop driving the linear power assembly, thereby being able to control the upper limit position of the movable part when it moves upward relative to the fixed part.

[0021] In a possible embodiment, the brewing head also includes a second support seat; the second support seat is connected to the upper end of the fixing member, a second buffer structure is arranged between the second support seat and the fixing member, and the second stroke switch is embedded in the bottom of the second support seat; after adopting this structure, under the action of the second support seat, the second support seat can play a reliable supporting role for the second stroke switch, and in addition, under the action of the second buffer structure, the second support seat has a certain buffer function, that is, the second stroke switch has a certain buffer function, so that when the movable member moves upward relative to the fixing member and the boss triggers the triggering end of the second stroke switch, it can avoid the second stroke switch from being damaged, that is, the service life of the second stroke switch can be extended.

[0022] In a possible embodiment, the second buffer structure includes a bolt and a fourth spring; a countersunk hole is provided on the second support seat, and the screw portion of the bolt is movably inserted through the countersunk hole and is threadedly connected to the upper end of the fixing member, and the fourth spring is sleeved on the outside of the screw portion of the bolt, and the two ends of the fourth spring are respectively abutted against the head of the bolt and the inner bottom of the countersunk hole; by adopting this structure, under the action of the fourth spring, the second support seat has a certain buffering function, and the second support seat can have a certain vertical floating ability, that is, the second travel switch has a certain vertical buffering function, so that when the movable part moves upward relative to the fixed part and the boss triggers the triggering end of the second travel switch, the second travel switch can be prevented from being damaged, that is, the service life of the second travel switch can be extended.

[0023] In one possible embodiment, a limiting groove is provided at the upper end of the fixing member, and the second support seat is vertically slidably connected in the limiting groove; by adopting this structure, the horizontal limiting effect on the second support seat can be achieved, so that when the second support seat floats, the second support seat can be prevented from rotating relative to the fixing member, that is, the reliability of the second support seat when floating vertically can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a first three-dimensional structural schematic diagram of the present invention; Figure 2 It is a second three-dimensional structural schematic diagram of the present invention; Figure 3 It is a third three-dimensional structural schematic diagram of the present invention; Figure 4 for Figure 3 The schematic diagram of the structure after the enlargement of A in the middle; Figure 5 It is a partially exploded three-dimensional structural schematic diagram of the transmission parts and the linear powertrain after assembly; Figure 6 It is a schematic diagram of the three-dimensional structure of the brewing head; Figure 7 is a schematic diagram of the cross-sectional structure of the brewing head; Figure 8 It is a schematic diagram of the three-dimensional structure of the brewer; Fig. 9 This is a schematic diagram of the three-dimensional structure of the brewer after removing some shell components; Fig.10 is a schematic diagram of the cross-sectional structure of the brewing device; Fig.11 This is a schematic diagram of the three-dimensional structure of the present invention without the brewing device. DETAILED DESCRIPTION

[0025] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0027] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See also Figure 1-11 As shown, the embodiment of the present application discloses a brewing mechanism of a coffee machine, comprising a supporting frame 1, a brewing head 2 and a brewer 3; the brewing head 2 is fixed to the top of the rear side of the supporting frame 1, and a coffee powder introduction port 11 is arranged at the top of the front side of the supporting frame 1; it is characterized in that: the brewing mechanism of the coffee machine also includes a moving frame 4 and a linear power assembly 5, the moving frame 4 is movably connected to the supporting frame 1, the brewer 3 is detachably connected to the moving frame 4, the linear power assembly 5 is connected to the supporting frame 1, and the moving frame 4 is transmission-connected to the linear power assembly 5; the linear power assembly 5 is used to drive the moving frame 4 to move relative to the supporting frame 1 so that the brewer 3 approaches and is sleeved on the brewing head 2, and is used to drive the moving frame 4 to move relative to the supporting frame 1 so that the brewer 3 moves to below the coffee powder introduction port 11.

[0030] The brewing mechanism of the coffee machine also includes a transmission member 6; an elongated hole 12 extending in the axial direction of the brewing head 2 is provided on the side wall of the supporting frame 1; the movable frame 4 is arranged on one side of the supporting frame 1, and a connecting column 41 is provided at the lower end of the movable frame 4 and on the side facing the elongated hole 12, and the connecting column 41 is rotatably inserted into the elongated hole 12 and can move along the length direction of the elongated hole 12; the linear power assembly 5 is arranged on the other side of the supporting frame 1 and is rotatably connected to the supporting frame 1; the transmission member 6 is rotatably inserted into the elongated hole 12 and can move along the length direction of the elongated hole 12; one end of the transmission member 6 is rotatably connected to the movable frame 4, and the other end of the transmission member 6 is transmission-connected to the driving end of the linear power assembly 5; the middle part of the elongated hole 12 is connected to an arc-shaped hole 13 extending toward the front side of the supporting frame 1 and used for the transmission member 6 to slide into; the linear power assembly 5 is used to drive the movable frame 4 The support frame 1 is moved relative to the support frame 1 so that the brewer 3 is close to the brewer 2 along the axial direction of the brewer 2 and is sleeved with the brewer 2, and is used to drive the brewer 3 to move to the bottom of the coffee powder delivery port 11 and be vertically aligned with the coffee powder delivery port 11; in addition, in order to prevent the connecting column from escaping from the elongated hole, a baffle with an outer diameter greater than the connecting column can be fixed or set at the end of the connecting column away from the brewer assembly, and the baffle abuts against the outer wall of the other side of the support frame, thereby preventing the connecting column from escaping from the elongated hole; under the driving action of the above-mentioned linear power assembly, and under the rotation and sliding cooperation of the connecting column and the transmission member with the elongated hole and the arc hole, the movable frame and the brewer can be switched between the brewing head and the bottom of the coffee powder delivery port, that is, in the above-mentioned structure, there is no need to use a complex swing arm structure, thereby simplifying the structural complexity of the coffee machine and reducing the production cost of the coffee machine.

[0031] The linear power assembly 5 includes a housing 51, a driving motor 52, a gear assembly 53 and a screw rod 54; the housing 51 is arranged on the other side of the supporting frame 1 and is rotatably connected to the supporting frame 1, the driving motor 52 is fixed on the housing 51, one end of the screw rod 54 is rotatably connected to the housing 51, the gear assembly 53 is arranged inside the housing 51, and one end of the screw rod 54 is transmission-connected to the driving motor 52 via the gear assembly 53; a nut sleeve 61 is fixed on the other end of the transmission member 6, the screw rod 54 is inserted into the nut sleeve 61 and is threadedly connected to the nut sleeve 61; after adopting this linear power assembly, when the driving motor drives the gear assembly to rotate When reversing, the gear assembly can drive the screw rod to rotate forward and reverse; when the screw rod rotates to one side, under the action of the threaded connection between the screw rod and the transmission member, the linear power assembly can drive the movable frame and the brewer to approach the brewing head along the axial direction of the brewing head and make the brewer and the brewing head sleeved, that is, the linear power assembly can drive the transmission member to slide from the arc hole to the elongated hole, and make the transmission member, the movable frame and the brewer move along the length direction of the elongated hole toward the side close to the brewing head, and finally make the brewer and the brewing head sleeved, at this time, the brewer and the brewing head can start brewing the coffee powder in the brewing cavity on the brewer; when the screw rod rotates to the other side, Under the action of the threaded connection between the screw rod and the transmission member, the linear power assembly can drive the movable frame and the brewer to move along the length direction of the elongated hole toward the side away from the brewing head. In the process of the movable frame and the brewer moving along the length direction of the elongated hole toward the side away from the brewing head, when the connecting column abuts against the bottom of the elongated hole, the transmission member can just move to the rear end of the arc-shaped hole, and in the process of the linear power assembly continuously driving the movable frame and the brewer via the transmission member, the transmission member can slide into the arc-shaped hole from back to front, and finally the brewer can be moved to the bottom of the coffee powder inlet on the support frame and vertically opposite to the coffee powder inlet. At this time, the coffee bean grinding mechanism can put the ground coffee powder from top to bottom into the brewing chamber on the brewer through the coffee powder feeding port; in addition, the first-stage gear in the gear assembly can be connected to the output gear on the drive motor by a transmission belt, and one end of the screw rod can be circumferentially limited and connected to the last-stage gear in the gear assembly by a limit key; in addition, under the action of the nut sleeve, the nut sleeve can be reliably connected to the screw rod thread, that is, the other end of the transmission member can be reliably connected to the screw rod thread, and in addition, the nut sleeve can be pressed on the other end of the transmission member by a pressing plate to tighten the nut sleeve and the transmission member.

[0032] A first travel switch 71 is connected to the outer wall on the other side of the support frame 1, and the first travel switch 71 is electrically connected to the controller in the coffee machine; when the linear power assembly 5 drives the movable frame 4 to move and causes the transmission member 6 to slide to the front end of the arc hole 13, the transmission member 6 is used to trigger the trigger end of the first travel switch 71 so that the first travel switch 71 sends a trigger signal to the controller in the coffee machine; by adopting this structure, when the linear power assembly drives the movable frame and the brewer to move and causes the transmission member to slide to the front end of the arc hole, the transmission member can trigger the trigger end of the first travel switch so that the first travel switch sends a trigger signal to the controller in the coffee machine, that is, the linear power assembly can stop driving the movable frame and the brewer to continue to move, that is, the limiting effect on the movable frame and the brewer is achieved.

[0033] One of the gears in the gear assembly 53 is embedded with magnets 531 evenly distributed circumferentially, and a Hall sensor 55 is fixed inside the housing 51. The Hall sensor 55 is electrically connected to the controller in the coffee machine, and the magnet 531 is used to trigger the Hall sensor 55. After adopting this structure, when the linear power assembly drives the movable frame and the brewer to move and causes the transmission member to slide to the front end of the arc hole, and after the transmission member triggers the trigger end of the first stroke switch so that the first stroke switch sends a trigger signal to the controller in the coffee machine, the drive motor can drive the lead screw to rotate back a certain number of times through the gear assembly, so that the linear power assembly drives the movable frame to move a certain distance from front to back along the arc hole, so as to further ensure that the brewer can be located below the coffee powder delivery port and vertically aligned with the coffee powder delivery port. In addition, the number of times the drive motor drives the lead screw to rotate back through the gear assembly can be accurately controlled according to the number of times the magnet triggers the Hall sensor. In addition, triggering the Hall sensor by a magnet to control the number of rotations of the rotating component is an existing technology currently on the market, so it will not be described here.

[0034] The brewing mechanism of the coffee machine also includes a first support seat 72; the first stroke switch 71 is embedded in the first support seat 72, one end of the first support seat 72 is rotatably connected to the outer wall of the other side of the support frame 1, and a first buffer structure is arranged between the other end of the first support seat 72 and the outer wall of the other side of the support frame 1; after adopting this structure, since one end of the first support seat is rotatably connected to the outer wall of the other side of the support frame, and a first buffer structure is arranged between the other end of the first support seat and the outer wall of the other side of the support frame, when the linear power assembly drives the moving frame and the brewer to move and causes the transmission member to trigger the triggering end of the first stroke switch, under the action of the first buffer structure, the first support seat and the first stroke switch have a certain floating ability, thereby avoiding the first stroke switch from being damaged by the transmission member, that is, the service life of the first stroke switch can be extended; in addition, one end of the first support seat can be rotatably connected to the support frame by a screw, the screw is movably inserted into one end of the first support seat, and the screw is threadedly fastened to the support frame.

[0035] The first buffer structure includes a first spring 73, and a sliding cavity 14 is provided on the outer wall of the other side of the support frame 1. The other end of the first support seat 72 extends into the sliding cavity 14 and is slidably connected with the sliding cavity 14. The first spring 73 is provided in the sliding cavity 14, and the two ends of the first spring 73 respectively abut against the inner wall of the sliding cavity 14 and the side of the first support seat 72 away from the transmission member 6; by adopting this structure, when the linear power assembly drives the moving frame and the brewing device to move and the transmission member triggers the triggering end of the first travel switch, under the action of the first spring, the first support seat and the first travel switch have a certain floating ability, thereby preventing the first travel switch from being damaged by the transmission member, that is, the service life of the first travel switch can be extended.

[0036] The brewer 3 includes a shell assembly 31 and a top slag plate 32. A brewing chamber 311 is provided on the inner side of the upper end of the shell assembly 31. The top slag plate 32 is vertically slidably connected in the brewing chamber 311. A push rod assembly 33 for driving the top slag plate 32 to move vertically is vertically fixed in the middle of the lower end of the top slag plate 32. The lower end of the push rod assembly 33 vertically moves through the bottom of the brewing chamber 311 and then extends into the shell assembly 31 located below the brewing chamber 311. A push assembly 34 and a locking assembly 35 are respectively provided in the shell assembly 31 located on both sides of the push rod assembly 33. The push assembly 34 is used to push the push rod assembly 33 upward to move the top slag plate 32 upward. When the top slag plate 32 moves upward, the locking assembly 35 is used to lock the push rod The component 33 is used to keep the top residue plate 32 in the state after it is moved upward; by adopting the above structure, after the pushing component pushes the push rod component upward to move the top residue plate upward, the top residue plate can push the coffee residue out of the brewing chamber, and after the top residue plate moves upward, the locking component can lock the push rod component to keep the top residue plate in the state after it is moved upward, that is, the top residue plate cannot be freely retracted into the brewing chamber, so that in the process of the linear power assembly in the coffee machine driving the brewer to move and reset toward the bottom of the coffee powder feeding port, the scraper plate on the support frame can reliably scrape off the coffee residue remaining on the top residue plate; in addition, arranging the scraper plate on the support frame is an existing structure in the coffee machines currently on the market, so it will not be repeated here.

[0037] The push rod assembly 33 includes a push rod 331, a support plate 332, a second spring 333, a sealing ring 334 and a pressing ring 335; the upper end of the push rod 331 is fixed to the middle part of the lower end of the top slag plate 32, the lower end of the push rod assembly 33 vertically moves through the bottom of the brewing chamber 311 and then extends into the shell assembly 31 located below the brewing chamber 311 and is fixed to the support plate 332, the second spring 333 is sleeved on the outside of the push rod 331, and the two ends of the second spring 333 are respectively abutted against the support plate 332 and the shell assembly 31 located at the outer bottom of the brewing chamber 311, a downwardly concave groove 312 is provided in the middle part of the inner bottom of the brewing chamber 311, the sealing ring 334 and the pressing ring 335 are sequentially embedded in the groove 312 from bottom to top, and the sealing ring 334 is used to seal between the outer wall of the push rod 331 and the inner wall of the groove 312 The second spring in the push rod assembly is compressed when the push assembly pushes the push rod assembly upward and the coffee residue in the brewing chamber is ejected from the brewing chamber. When the push assembly releases the pushing state of the push rod assembly and the locking state of the push rod assembly is released, the push rod and the support plate can be driven to move downward and reset under the action of the second spring, and the top residue plate can also move downward and reset to the inner bottom of the brewing chamber. In addition, the sealing ring can be reliably pressed against the inner bottom of the groove under the action of the pressure ring, and the pressure ring is tightly matched with the inner wall of the groove. The sealing ring can seal the gap between the outer wall of the push rod and the inner wall of the groove to avoid leakage of coffee liquid between the push rod and the shell assembly.

[0038] The push assembly 34 includes a guide column 341 and a sliding sleeve 342; the guide column 341 is vertically fixed in the housing assembly 31 located on one side of the push rod assembly 33, the sliding sleeve 342 is slidably sleeved on the outside of the guide column 341, a push block 3421 is provided on the outer wall of the sliding sleeve 342 facing the push rod 331, a first lug 3321 is provided on the outer wall of the support plate 332, the first lug 3321 is supported on the push block 3421, a slider 3422 is provided on the front side of the sliding sleeve 342, a slide groove 313 is provided on the front side of the housing assembly 31, and the slider 3422 is vertically slidably matched in the slide groove 313 The movable frame 4 is rotatably connected with a blocking member 42, and a first torsion spring is arranged between the blocking member 42 and the movable frame 4; when the linear power assembly 5 drives the movable frame 4 to move relative to the support frame 1 so that the brewing device 3 is close to the brewing head 2 along the axial direction of the brewing head 2, the slider 3422 is used to abut against the blocking end of the blocking member 42 and drive the blocking member 42 to rotate so that the blocking member 42 releases the blocking of the slider 3422, and when the slider 3422 passes over the blocking end of the blocking member 42, the first torsion spring is used to drive the blocking member 42 to rotate and reset; when the linear power assembly 5 drives the movable frame 4 relative to the support frame 1 When the brewer 3 moves away from the brewing head 2 along the axial direction of the brewing head 2, the slider 3422 is used to abut against the blocking end of the blocking member 42 so that the blocking member 42 pushes the slider 3422 upward; by adopting this pushing assembly, when the linear power assembly drives the moving frame to move relative to the supporting frame to make the brewer move away from the brewing head along the axial direction of the brewing head, the slider can abut against the blocking end of the blocking member, and the linear power assembly continues to drive the moving frame to move relative to the supporting frame to make the brewer move away from the brewing head along the axial direction of the brewing head, the blocking member can push the slider upward, at this time, the slider The movable sleeve can slide upward along the guide column, and under the cooperation of the push block and the first lug, the sliding sleeve can push the ejector rod assembly upward to move the top slag plate upward; when the linear power assembly drives the movable frame to move relative to the supporting frame to make the brewer approach the brewing head along the axial direction of the brewing head, the sliding block can abut against the blocking end of the blocking member and drive the blocking member to rotate so that the blocking member releases the blocking of the sliding block, that is, the linear power assembly can reliably drive the movable frame to move relative to the supporting frame to make the brewer approach the brewing head along the axial direction of the brewing head; the above-mentioned blocking member has the function of limiting the slider in one direction.

[0039] The locking assembly 35 includes a rotating shaft 351 and a second torsion spring 352; the rotating shaft 351 is vertically arranged in the shell assembly 31 located on one side of the push rod assembly 33 and is rotatably connected to the shell assembly 31, the second torsion spring 352 is sleeved on the outside of the lower end of the rotating shaft 351, and the two ends of the second torsion spring 352 are respectively plugged with the outer wall of the rotating shaft 351 and the shell assembly 31; a support platform 3511 is arranged on the outer wall of the upper part of the rotating shaft 351, and an arc-shaped first guide surface 3512 is arranged on one side of the lower end of the support platform 3511, and a second lug 3322 is arranged on the outer wall of the support plate 332; when the push assembly 34 pushes the push rod assembly 33 upward to When the top slag plate 32 moves upward, the second lug 3322 is used to cooperate with the first guide surface 3512 to guide and drive the rotating shaft 351 to rotate to one side so that the second lug 3322 moves to the top of the support platform 3511; when the second lug 3322 moves to the top of the support platform 3511, the second torsion spring 352 is used to drive the rotating shaft 351 to rotate and reset to the other side so that the support platform 3511 rotates to the bottom of the second lug 3322 and supports the second lug 3322; a protrusion 3513 is also provided on the outer wall of the upper part of the rotating shaft 351, and an arc-shaped second guide surface 3514 is provided on one side of the lower end of the protrusion 3513 ... When the linear power assembly 5 in the coffee machine drives the movable frame 4 to move toward the side away from the brewing head 2 and moves the brewer 3 to the bottom of the coffee powder inlet 11, the second guide surface 3514 is used to abut against the limit block 15 located on the support frame 1 and drive the rotating shaft 351 to rotate to one side, so that the support table 3511 releases the support state of the second lug 3322; after adopting this locking assembly, when the pushing assembly pushes the ejector assembly upward to move the top residue plate upward, the second lug can cooperate with the first guide surface to guide and drive the rotating shaft to rotate to one side so that the second lug moves to the top of the support table. After the support platform is above the top, the second torsion spring can drive the rotating shaft to rotate and reset toward the other side so that the support platform rotates to the bottom of the second lug and supports the second lug. Since the support platform supports the second lug, it can prevent the push rod assembly and the top residue plate from freely moving downward and resetting, that is, the push rod assembly and the top residue plate are locked, thereby ensuring that the top residue plate can reliably push out the coffee residue in the brewing chamber, and in the process of the scraper plate on the support frame scraping the coffee residue remaining on the top residue plate, it can prevent the top residue plate from freely moving downward and resetting, that is, the reliability of the scraper plate in scraping the coffee residue remaining on the top residue plate can be improved;When the linear power assembly drives the moving frame and the brewer to move toward the side away from the brewing head and the connecting column on the moving frame abuts against the bottom of the elongated hole, the moving frame, i.e., the brewer, can rotate relative to the support frame toward the bottom of the coffee powder delivery port while the linear power assembly continues to drive the moving frame and the brewer. At this time, the second guide surface can abut against the limit block on the support frame and drive the rotating shaft to rotate toward one side. At this time, the support table can release the support state of the second lug. When the support table releases the support state of the second lug, the push rod assembly can drive the top residue plate to move downward and finally reset. In addition, when the linear power assembly drives the moving frame and the brewer to move toward the side close to the brewing head next time, the limit block on the support frame can release the push state of the protruding portion. At this time, the second torsion spring can drive the rotating shaft to rotate and reset toward the other side. ;

[0040] A support rib 3515 spirally extending in the axial direction of the rotating shaft 351 is provided in the middle of the rotating shaft 351; when the second lug 3322 is separated from the supporting platform 3511, the support rib 3515 is used to abut against the second lug 3322 and make the second lug 3322 move from top to bottom along the support rib 3515 to play a buffering role for the top rod assembly 33 and the top slag plate 32; after adopting this structure, when the second lug is separated from the supporting platform, so that the top rod assembly drives the top slag plate to move down and reset, the second lug can first fall onto the support rib That is, the supporting rib can be abutted against the second lug, and then in the process of the second torsion spring driving the rotating shaft to rotate and reset to the other side, the second lug can move from top to bottom along the supporting rib to play a buffering role for the push rod assembly and the top slag plate, and finally after the second torsion spring drives the rotating shaft to rotate and reset to the other side, the second lug can detach from the supporting rib from the lower end of the supporting rib; in the above structure, since the supporting rib can play a buffering role for the push rod assembly and the top slag plate, the noise and abnormal sound when the push rod assembly and the top slag plate are reset can be effectively eliminated.

[0041] The brewing head 2 includes a fixed part 21 and a movable part 22. The fixed part 21 is fixed to the top of the rear side of the supporting frame 1. The movable part 22 is sleeved on the lower end of the fixed part 21 and can move vertically relative to the fixed part 21. A spring group 23 is embedded between the movable part 22 and the fixed part 21. The spring group 23 is used to apply elastic force to the movable part 22 to drive the movable part 22 to move downward and reset. The brewing head also includes a water valve 24. The water valve 24 is fixed to the upper end of the fixed part 21. The water inlet end of the water valve 24 is used to communicate with the coffee machine. The water outlet end of the water valve 24 is used to be connected to the hot water supply unit in the water valve 24, and the water outlet end of the water valve 24 is used to be connected to the brewing device 3; the valve stem 241 of the water valve 24 abuts against the upper end of the movable member 22, and when the movable member 22 moves upward relative to the fixed member 21, the movable member 22 is used to push the valve stem 241 to open the water valve 24; a third spring 25 is provided between the valve stem 241 of the water valve 24 and the valve body 242 of the water valve 24, and when the movable member 22 moves downward relative to the fixed member 21, the third spring 25 is used to drive the valve stem 241 downward. When the brewing head is in the state of being moved upward, the movable part in the brewing head can move upward relative to the fixed part, and at this time, the movable part can push the valve stem to open the water valve, so that the hot water from the hot water supply unit can enter the brewing head, that is, through the setting of the water valve, when the movable part in the brewing head is pushed upward, the water valve can automatically allow the hot water from the hot water supply unit to enter the brewing head, so that the structure of the coffee machine can be simpler, and it has the advantages of convenient control and low cost; in addition, when the brewing chamber in the brewing head of the coffee machine gradually separates from the brewing head, that is, when the movable part moves downward relative to the fixed part, the third spring can drive the valve stem to move downward so that the flow rate of the water valve is gradually reduced until it is closed, that is, the hot water supply unit can stop supplying hot water to the brewing head of the coffee machine.

[0042] The lower end of the valve stem 241 is sleeved with a support member 26, which is engaged with the valve stem 241, and the third spring 25 is sleeved on the outside of the valve stem 241. The two ends of the third spring 25 are respectively against the valve body 242 and the support member 26. By adopting this structure, with the cooperation of the support member and the valve body, the third spring can be reliably supported, so that when the movable part moves downward relative to the fixed part, the third spring can reliably drive the valve stem to move downward to close the water valve.

[0043] An annular groove 2411 is provided on the outer wall of the valve stem 241, and an annular clamping block 261 is provided on the inner wall of the upper end of the support member 26, and the annular clamping block 261 is engaged with the annular groove 2411; by adopting this structure, under the engaged engagement of the annular clamping block and the annular groove, the support member can be reliably assembled with the valve stem, that is, it has the advantage of convenient assembly of the support member and the valve stem.

[0044] The brewing head 2 also includes a second stroke switch 27; the second stroke switch 27 is located on the inner side of the upper end of the fixing member 21, the second stroke switch 27 is connected to the fixing member 21, the second stroke switch 27 is electrically connected to the controller in the coffee machine, and a boss 221 is provided on the outer top of the movable member 22; when the controller in the coffee machine drives the linear power assembly 5 so that the linear power assembly 5 drives the movable frame 4 to move relative to the supporting frame 1 and makes the brewer 3 push the movable member to move upward to the limit position, the boss 221 is used to trigger the trigger end of the second stroke switch 27 so that the controller stops driving the linear power assembly 5; when the controller in the coffee machine drives the linear power assembly so that the linear power assembly drives the brewer to push the movable member to move upward to the limit position, the boss can trigger the trigger end of the second stroke switch so that the controller stops driving the linear power assembly, thereby being able to control the upper limit position of the movable member when it moves upward relative to the fixing member.

[0045] The brewing head also includes a second support seat 28; the second support seat 28 is connected to the upper end of the fixing member 21, and a second buffer structure is arranged between the second support seat 28 and the fixing member 21, and the second travel switch 27 is embedded in the bottom of the second support seat 28; by adopting this structure, under the action of the second support seat, the second support seat can play a reliable supporting role for the second travel switch, and in addition, under the action of the second buffer structure, the second support seat has a certain buffer function, that is, the second travel switch has a certain buffer function, so that when the movable part moves upward relative to the fixing part and the boss triggers the triggering end of the second travel switch, it can avoid the second travel switch from being damaged, that is, the service life of the second travel switch can be extended.

[0046] The second buffer structure includes a bolt 291 and a fourth spring 292; a countersunk hole 281 is provided on the second support seat 28, and the screw portion of the bolt 291 is movably inserted through the countersunk hole 281 and is threadedly connected to the upper end of the fixing member 21, and the fourth spring 292 is sleeved on the outside of the screw portion of the bolt 291, and the two ends of the fourth spring 292 are respectively abutted against the head of the bolt 291 and the inner bottom of the countersunk hole 281; by adopting this structure, under the action of the fourth spring, the second support seat has a certain buffer function, and the second support seat can have a certain vertical floating ability, that is, the second travel switch has a certain vertical buffer function, so that when the movable part moves upward relative to the fixed part and the boss triggers the triggering end of the second travel switch, it can avoid the second travel switch from being damaged, that is, the service life of the second travel switch can be extended.

[0047] A limiting groove 211 is provided at the upper end of the fixing member 21, and the second support seat 28 is vertically slidably connected in the limiting groove 211; by adopting this structure, the horizontal limiting effect on the second support seat can be achieved, so that when the second support seat floats, the second support seat can be prevented from rotating relative to the fixing member, that is, the reliability of the second support seat when floating vertically can be improved.

[0048] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A coffee machine brewing mechanism, comprising a support frame (1), a brewing head (2) and a brewing device (3); the brewing head (2) is fixed to the top of the rear side of the support frame (1), and a coffee powder inlet (11) is provided at the top of the front side of the support frame (1); the characteristics are: The coffee machine brewing mechanism further comprises a movable frame (4) and a linear power assembly (5); the movable frame (4) is movably connected to the support frame (1); the brewer (3) is detachably connected to the movable frame (4); the linear power assembly (5) is connected to the support frame (1); the movable frame (4) is in transmission connection with the linear power assembly (5); the linear power assembly (5) is used to drive the movable frame (4) to move relative to the support frame (1) so that the brewer (3) approaches and is sleeved onto the brewing head (2); and to drive the movable frame (4) to move relative to the support frame (1) so that the brewer (3) moves to below the coffee powder delivery port (11).

2. The coffee machine brewing mechanism according to claim 1, characterized in that: The coffee machine brewing mechanism further comprises a transmission member (6); a side wall of the support frame (1) is provided with an elongated hole (12) extending in the axial direction of the brewing head (2); the movable frame (4) is arranged on one side of the support frame (1); a connecting column (41) is arranged at the lower end of the movable frame (4) and on the side facing the elongated hole (12); the connecting column (41) is rotatably inserted into the elongated hole (12) and is movable along the length direction of the elongated hole (12); the linear power assembly (5) is arranged on the other side of the support frame (1) and is rotatably connected to the support frame (1); the transmission member (6) is rotatably inserted into the elongated hole (12) and is movable along the length direction of the elongated hole (12) The linear power assembly (5) is used to drive the movable frame (4) to move in the longitudinal direction of the supporting frame (12); one end of the transmission member (6) is rotationally connected to the movable frame (4), and the other end of the transmission member (6) is transmission-connected to the driving end of the linear power assembly (5); the middle part of the elongated hole (12) is connected to an arc-shaped hole (13) extending toward the front side of the supporting frame (1) and used for the transmission member (6) to slide into; the linear power assembly (5) is used to drive the movable frame (4) to move relative to the supporting frame (1) so that the brewing device (3) approaches the brewing head (2) along the axial direction of the brewing head (2) and is sleeved with the brewing head (2); and is used to drive the brewing device (3) to move to the bottom of the coffee powder delivery opening (11) and to be vertically aligned with the coffee powder delivery opening (11).

3. The coffee machine brewing mechanism according to claim 2, characterized in that: The linear power assembly (5) comprises a housing (51), a drive motor (52), a gear assembly (53) and a screw rod (54); the housing (51) is arranged on the other side of the support frame (1) and is rotatably connected to the support frame (1); the drive motor (52) is fixed to the housing (51); one end of the screw rod (54) is rotatably connected to the housing (51); the gear assembly (53) is arranged inside the housing (51); one end of the screw rod (54) is transmission-connected to the drive motor (52) via the gear assembly (53); a nut sleeve (61) is fixed to the other end of the transmission member (6); the screw rod (54) is inserted into the nut sleeve (61) and is threadedly connected to the nut sleeve (61); the support frame (1) A first travel switch (71) is connected to the outer wall of the other side, and the first travel switch (71) is electrically connected to a controller in the coffee machine; when the linear power assembly (5) drives the moving frame (4) to move and causes the transmission member (6) to slide to the front end of the arc hole (13), the transmission member (6) is used to trigger the trigger end of the first travel switch (71) so that the first travel switch (71) sends a trigger signal to the controller in the coffee machine; magnets (531) are evenly distributed circumferentially embedded on one of the gears in the gear assembly (53); a Hall sensor (55) is fixed inside the housing (51), and the Hall sensor (55) is electrically connected to the controller in the coffee machine, and the magnet (531) is used to trigger the Hall sensor (55).

4. The coffee machine brewing mechanism according to any one of claims 1 to 3, characterized in that: The brewing device (3) comprises a shell assembly (31) and a top slag plate (32); a brewing chamber (311) is arranged on the inner side of the upper end of the shell assembly (31); the top slag plate (32) is vertically slidably connected in the brewing chamber (311); a top rod assembly (33) for driving the top slag plate (32) to move vertically is vertically fixed in the middle of the lower end of the top slag plate (32); the lower end of the top rod assembly (33) vertically moves through the bottom of the brewing chamber (311) and then extends into the brewing chamber (311). In the housing assembly (31) below the brewing chamber (311); a pushing assembly (34) and a locking assembly (35) are respectively arranged in the housing assembly (31) located on both sides of the push rod assembly (33); the pushing assembly (34) is used to push the push rod assembly (33) upwards to move the top slag plate (32) upwards; when the top slag plate (32) moves upwards, the locking assembly (35) is used to lock the push rod assembly (33) to keep the top slag plate (32) in the state after the top slag plate (32) moves upwards.

5. The coffee machine brewing mechanism according to claim 4, characterized in that: The push rod assembly (33) comprises a push rod (331), a support plate (332), a second spring (333), a sealing ring (334) and a pressing ring (335); the upper end of the push rod (331) is fixed to the middle of the lower end of the top slag plate (32); the lower end of the push rod assembly (33) vertically moves through the bottom of the brewing chamber (311) and then extends into the housing assembly (31) located below the brewing chamber (311) and is fixed to the support plate (332); the second spring (333) is sleeved on the push rod (331), the two ends of the second spring (333) respectively abut against the support plate (332) and the shell assembly (31) located at the outer bottom of the brewing chamber (311), and a downwardly recessed groove (312) is provided in the middle of the inner bottom of the brewing chamber (311), and the sealing ring (334) and the pressure ring (335) are sequentially embedded in the groove (312) from bottom to top, and the sealing ring (334) is used to seal the gap between the outer wall of the push rod (331) and the inner wall of the groove (312).

6. The coffee machine brewing mechanism according to claim 5, characterized in that: The push assembly (34) comprises a guide column (341) and a sliding sleeve (342); the guide column (341) is vertically fixed in a housing assembly (31) located on one side of the push rod assembly (33); the sliding sleeve (342) is slidably sleeved on the outside of the guide column (341); a push block (3421) is provided on the outer wall of the sliding sleeve (342) facing the push rod (331); a first lug (3321) is provided on the outer wall of the support plate (332); the first lug (3321) is supported on the push block (3421); a sliding block (3422) is provided on the front side of the sliding sleeve (342); a sliding groove (313) is provided on the front side of the housing assembly (31); the sliding block (3422) is vertically slidably fitted in the sliding groove (313); a blocking member (42) is rotatably connected to the movable frame (4); the blocking member (42) is rotatably connected to the movable frame (4); A first torsion spring is arranged between the movable frame (4); when the linear power assembly (5) drives the movable frame (4) to move relative to the support frame (1) so that the brewing device (3) approaches the brewing head (2) along the axial direction of the brewing head (2), the slider (3422) is used to abut against the blocking end of the blocking member (42) and drive the blocking member (42) to rotate so that the blocking member (42) releases the blocking of the slider (3422), and after the slider (3422 passes over the blocking end of the blocking member (42), the first torsion spring is used to drive the blocking member (42) to rotate and reset; when the linear power assembly (5) drives the movable frame (4) to move relative to the support frame (1) so that the brewing device (3) moves away from the brewing head (2) along the axial direction of the brewing head (2), the slider (3422) is used to abut against the blocking end of the blocking member (42) so that the blocking member (42) pushes the slider (3422) upward.

7. The coffee machine brewing mechanism according to claim 5, characterized in that: The locking assembly (35) comprises a rotating shaft (351) and a second torsion spring (352); the rotating shaft (351) is vertically arranged in the housing assembly (31) located on one side of the push rod assembly (33) and is rotatably connected to the housing assembly (31); the second torsion spring (352) is sleeved on the outside of the lower end of the rotating shaft (351); the two ends of the second torsion spring (352) are respectively plugged into the outer wall of the rotating shaft (351) and the housing assembly (31); the outer wall of the upper part of the rotating shaft (351) is A support platform (3511) is provided on the top, a first arc-shaped guide surface (3512) is provided on one side of the lower end of the support platform (3511), and a second lug (3322) is provided on the outer wall of the support plate (332); when the push assembly (34) pushes the push rod assembly (33) upward to move the slag ejector plate (32) upward, the second lug (3322) is used to cooperate with the first guide surface (3512) to guide and drive the rotating shaft (351) to rotate toward one side so that the second lug (3322) The rotating shaft (351) is configured to move the second lug (3322) to the top of the support platform (3511); when the second lug (3322) moves to the top of the support platform (3511), the second torsion spring (352) is used to drive the rotating shaft (351) to rotate and reset toward the other side so that the support platform (3511) rotates to the bottom of the second lug (3322) and supports the second lug (3322); a protrusion (3513) is further provided on the outer wall of the upper part of the rotating shaft (351), and a lower end of the protrusion (3513) is provided on one side. A second guide surface (3514) is provided in an arc shape; when the linear power assembly (5) in the coffee machine drives the movable frame (4) to move toward a side away from the brewing head (2) and causes the brewing device (3) to move below the coffee powder delivery port (11), the second guide surface (3514) is used to abut against a limit block (15) located on the support frame (1) and drive the rotating shaft (351) to rotate toward one side, so that the support platform (3511) releases the support state of the second lug (3322).

8. The coffee machine brewing mechanism according to claim 7, characterized in that: A support rib (3515) is provided in the middle of the rotating shaft (351) and extends spirally in the axial direction of the rotating shaft (351); when the second lug (3322) is separated from the support platform (3511), the support rib (3515) is used to abut against the second lug (3322) and enable the second lug (3322) to move from top to bottom along the support rib (3515) to play a buffering role on the ejector rod assembly (33) and the ejector slag plate (32).

9. The coffee machine brewing mechanism according to any one of claims 1 to 3, characterized in that: The brewing head (2) comprises a fixed part (21) and a movable part (22), wherein the fixed part (21) is fixed to the top of the rear side of the support frame (1), and the movable part (22) is sleeved on the lower end of the fixed part (21) and can move vertically relative to the fixed part (21); a spring group (23) is embedded between the movable part (22) and the fixed part (21), and the spring group (23) is used to apply elastic force to the movable part (22) to drive the movable part (22) to move downward and reset; the brewing head also comprises a water valve (24), wherein the water valve (24) is fixed to the upper end of the fixed part (21), and the water inlet end of the water valve (24) is used to communicate with a hot water supply unit in the coffee machine. The water outlet end of the water valve (24) is connected to the brewing device (3); the valve stem (241) of the water valve (24) abuts against the upper end of the movable member (22); when the movable member (22) moves upward relative to the fixed member (21), the movable member (22) is used to push the valve stem (241) to open the water valve (24); a third spring (25) is provided between the valve stem (241) of the water valve (24) and the valve body (242) of the water valve (24); when the movable member (22) moves downward relative to the fixed member (21), the third spring (25) is used to drive the valve stem (241) to move downward so that the flow rate of the water valve (24) is gradually reduced until it is closed.

10. The coffee machine brewing mechanism according to claim 9, characterized in that: The brewing head (2) further comprises a second travel switch (27); the second travel switch (27) is located on the inner side of the upper end of the fixing member (21); the second travel switch (27) is connected to the fixing member (21); the second travel switch (27) is electrically connected to a controller in the coffee machine; a boss (221) is provided on the outer top of the movable member (22); when the controller in the coffee machine drives the linear power assembly (5) so that the linear power assembly (5) drives the movable frame (4) to move relative to the support frame (1) and causes the brewing device (3) to push the movable member upward to an extreme position, the boss (221) is used to trigger a trigger end of the second travel switch (27) so that the controller stops driving the linear power assembly (5).

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