Coffee machine powder pressing device

Abstract

The invention discloses a powder pressing device for a coffee machine, comprising a handle, a bevel gear, a planetary gear, a gear ring, a gear ring cover buckled on the gear ring, a driving rod, a driven rod, a powder pressing spiral rod, a spiral rod seat, a powder pressing plate, a spiral rod sleeve, an impact block and an impact shaft for driving the impact block; the handle is sleeved on the bevel gear, and the bevel gear is rotatably mounted on the spiral rod sleeve; the impact shaft is connected to the impact block, and the impact block is connected to the powder pressing plate; the planetary gear is mounted in the gear ring and is used to drive the driving rod; the driving rod is sleeved together with the driven rod and drives the driven rod to rotate; the spiral rod seat is fixed in the spiral rod sleeve; the powder pressing plate performs a spiral motion driven by the powder pressing spiral rod to scrape and preliminarily compact the coffee powder in the filter; the powder pressing plate is mounted below the powder pressing spiral rod, and the impact block finally compacts the coffee powder by impacting the powder pressing plate.

Description

Technical Field

[0001] The invention relates to the field of coffee machines, in particular to a coffee machine powder pressing device. Background Art

[0002] When using a pressure coffee machine to brew high-quality coffee, the coffee powder in the filter is required to be flat, compacted, uniformly compacted, and hygienic. Currently, there are related devices with coffee powder compacting function on the market. There are three main ways to compact coffee powder: ① Compact the coffee powder by a vertically lifting piston, but it does not have the functions of rotating and impact compacting. Moreover, with this compacting method, when the coffee powder ground by the grinding component does not fall into the middle of the filter, the compacted powder will not be flat enough and the compaction of the coffee powder will not be uniform enough, such as Delonghi's pressure coffee machine EC9335M; ② It has the function of rotating compacting, but does not have the function of instant impact compacting. Moreover, the ground coffee powder must pass through the top of the compacting plate before falling into the filter. In this way, there will be residual coffee powder on the compacting plate, which is not easy to clean. The residual coffee powder for a long time makes the coffee powder falling into the filter unhygienic, such as Breville's Oracle Touch coffee machine. ③ The powder tamper only has the function of impact compaction, but it does not have the function of scraping and flattening the coffee powder in the filter and preliminarily compacting it before impact compaction, for example: The Force Tamper.

[0003] Therefore, the existing coffee powder compacting device has the problems of not compacting the powder flatly, not having a high compaction degree, not having a uniform compaction degree, and being unhygienic.

[0004] Therefore, there is still room for improvement in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a powder pressing device for a coffee machine, aiming to solve the technical problems of the existing powder pressing device that the powder is not pressed flatly enough, the compaction degree is not high enough, the compaction degree is not uniform enough and it is unhygienic.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a coffee machine powder pressing device, which includes a handle, a bevel gear, a planetary gear, a gear ring, a gear ring cover, a driving rod, a driven rod, a powder pressing spiral rod, a spiral rod seat, a powder pressing plate, a spiral rod sleeve, an impact block, an impact shaft for driving the impact block, a filter, a filter seat, a support for supporting the filter seat and a bean grinding assembly; the handle is sleeved on the bevel gear, and the bevel gear is rotatably mounted on the spiral rod sleeve; the gear ring cover is buckled on the gear ring; the impact shaft is connected to the impact block, and the impact block is connected to the powder pressing plate; the planetary gear is installed in the gear ring and meshes with the upper end of the driving rod; the driving rod and the driven rod are sleeved together The driving rod drives the driven rod to rotate; the spiral rod seat is fixed in the spiral rod sleeve, and the inside and outside of the circular ring-shaped surrounding bone in the middle of the powder pressing spiral rod are both threaded structures, and are respectively screwed with the threads on the outside of the driven rod and the threads in the spiral rod seat through internal and external threads; the powder pressing plate is installed under the powder pressing spiral rod, and the powder pressing plate performs a spiral motion driven by the powder pressing spiral rod to scrape and preliminarily compact the coffee powder in the filter; the impact block impacts the powder pressing plate, and the powder pressing plate moves vertically downward to impact the coffee powder in the filter, thereby compacting the coffee powder; the supporter is fixedly installed at the bottom port of the spiral rod sleeve, and the filter is installed in the filter seat; the bean grinding assembly is connected to the spiral rod sleeve.

[0007] The powder compacting device of the coffee machine, wherein the driving rod, the driven rod, the powder compacting screw rod, the screw rod seat and the powder compacting plate constitute a spiral powder compacting structure for compacting powder in spiral motion, the bevel gear drives the planetary gear, which in turn drives the driving rod to rotate, the driving rod drives the driven rod, thereby realizing the spiral motion of the powder compacting screw rod, and the powder compacting plate performs spiral motion driven by the powder compacting screw rod to scrape and preliminarily compact the coffee powder in the filter.

[0008] The coffee machine powder pressing device, wherein the impact shaft, the impact block and the powder pressing plate constitute an impact powder pressing structure, wherein the elastic potential energy formed by the spring B installed between the impact shaft and the impact block when the powder pressing screw rod presses the powder is combined with the gravitational potential energy of the impact block to be converted into the kinetic energy of the impact block, the impact block impacts the powder pressing plate, and the powder pressing plate impacts the coffee powder in the filter.

[0009] The coffee machine powder pressing device, wherein the handle is rigidly connected to the bevel gear, and the handle is used to rotate the bevel gear.

[0010] The coffee machine powder pressing device, wherein the bevel gear is mounted on a shaft on the side of the spiral rod sleeve through a circular hole in the middle thereof, and the bevel gear can rotate on the shaft.

[0011] The coffee machine powder pressing device, wherein the structure outside the gear ring is a bevel gear, and the structure inside the gear ring is a spur gear.

[0012] In the coffee machine powder pressing device, the bevel gear is meshed with the ring gear through the gears, and the rotation of the bevel gear drives the ring gear to rotate.

[0013] The coffee machine powder pressing device, wherein there are three planetary gears, the three planetary gears are evenly installed inside the ring gear, and the three planetary gears are engaged with each other through gears, and the rotation of the ring gear drives the three planetary gears to rotate.

[0014] The coffee machine powder pressing device, wherein the upper part of the driving rod has a gear, which is installed in the middle of the three planetary gears, the driving rod and the three planetary gears are meshed through the gears, and the rotation of the three planetary gears drives the driving rod to rotate.

[0015] In the coffee machine powder pressing device, a compression spring A is installed on the driving rod, and the upper end of the spring A is supported by the gear ring cover, so that the driving rod is subjected to the downward elastic force of the spring A.

[0016] The coffee machine powder pressing device, wherein the upper and lower mating surfaces of the driving rod and the driven rod are triangular tooth structures, which can be in an engaged, semi-engaged or disengaged state.

[0017] The coffee machine powder pressing device, wherein the outer surface of the driven rod is a threaded structure.

[0018] The coffee machine powder pressing device, wherein the inner side of the spiral rod seat is a threaded structure.

[0019] The powder pressing device of the coffee machine, wherein the powder pressing plate is rigidly connected to the powder pressing screw rod in the transverse direction, so that the spiral movement of the powder pressing screw rod can drive the synchronous spiral movement of the powder pressing plate; in the longitudinal direction, the axis of the powder pressing plate passes through the circular hole in the middle of the powder pressing screw rod, so that the powder pressing plate can move vertically up and down inside the spiral rod sleeve.

[0020] The coffee machine powder pressing device, wherein the filter is located directly below the powder pressing plate, the coffee powder of the bean grinding assembly falls into the filter, and the powder pressing plate spirally moves to scrape and preliminarily compact the coffee powder in the filter.

[0021] The coffee machine powder pressing device, wherein, when the powder pressing plate does not contact the coffee powder in the filter, the driving rod and the driven rod are meshed through triangular teeth, and the rotation of the driven rod causes the powder pressing spiral rod to perform spiral motion.

[0022] The coffee machine powder pressing device described, wherein, when the powder pressing plate continues to move downward after contacting the coffee powder in the filter, the resistance of the coffee powder to the powder pressing plate will gradually increase; the resistance of the powder pressing plate is transmitted to the powder pressing screw rod, resulting in an increase in the torsion of the powder pressing screw rod; the torsion of the powder pressing screw rod is transmitted to the driven rod, resulting in an increase in the torsion of the driven rod; the torsion of the driven rod is transmitted to the driving rod, resulting in an increase in the torsion of the driving rod; when the torsion of the driving rod increases, the driving rod will overcome the elastic force of the spring A thereon and move upward; the upward movement of the driving rod causes the driving rod and the driven rod to transition from an initial meshing state to a semi-meshing state and finally to a separation state.

[0023] The coffee machine powder pressing device, wherein the impact shaft passes through the circular hole in the middle of the powder pressing spiral rod, and the impact shaft can rotate in the middle of the powder pressing spiral rod.

[0024] The coffee machine powder pressing device, wherein a threaded screw hole is provided below the impact shaft, which is connected to the powder pressing spiral rod through a screw, and the spiral motion of the powder pressing spiral rod drives the shaft to move vertically up and down.

[0025] The coffee machine powder pressing device, wherein the spring B is installed between the impact block and the head of the impact shaft, and the impact shaft compresses the spring B when it moves downward, and the elastic potential energy of the spring B increases, and its elastic potential energy provides the impact block with the energy required to impact the powder pressing plate.

[0026] The coffee machine powder pressing device, wherein a hanging platform is provided inside the driven rod; before impact pressing of the powder, the impact block is above the hanging platform of the driven rod.

[0027] In the coffee machine powder pressing device, the impact shaft is in the middle of the driving rod, the square head of the impact shaft cooperates with the square hole of the driving rod, and the rotation of the driving rod drives the impact shaft to rotate synchronously.

[0028] In the coffee machine powder pressing device, the hole in the middle of the impact block is a square hole, the part of the impact shaft passing through the square hole is a square that matches the square hole, and the rotation of the impact shaft drives the impact block to rotate.

[0029] The coffee machine powder pressing device is characterized in that when the resistance of the coffee powder in the filter below the powder pressing plate is small, the driving rod is engaged with the driven rod. At this time, the driving rod is rotated, and the driving rod, the driven rod, the shaft and the impact block will rotate synchronously, and the impact block is always above the driven rod hanging platform.

[0030] The coffee machine powder pressing device is characterized in that when the resistance of the coffee powder in the filter under the powder pressing plate increases to a certain limit value, the driving rod and the driven rod are separated. At this time, the driving rod is rotated, the driven rod no longer rotates, and the driving rod, the shaft and the impact block continue to rotate. The impact block will leave the hanging platform on the driven rod, and the impact block will move vertically downward at a large speed to impact the powder pressing plate under the action of elastic potential energy and gravitational potential energy.

[0031] In the powder pressing device for a coffee machine, a silicone ring is installed on the groove outside the powder pressing spiral rod to form a seal between the powder pressing spiral rod and the spiral rod sleeve.

[0032] In the powder pressing device of the coffee machine, a spring C is installed between the powder pressing spiral rod and the powder pressing plate, so as to reset the powder pressing plate after being impacted.

[0033] The coffee machine powder pressing device, wherein a coffee powder inlet is opened in the middle of the spiral rod sleeve, and the spiral rod sleeve is connected to the bean grinding assembly through the coffee powder inlet.

[0034] The coffee machine powder pressing device, wherein a switch is installed outside the spiral rod sleeve, the switch is located above the filter seat, and the switch is used to detect whether the filter seat is installed in the correct position.

[0035] The coffee machine powder pressing device, wherein the gear ring cover is connected to the spiral rod sleeve by screws, and is used to position the bevel gear, the planetary gear and the spring A.

[0036] The coffee machine powder pressing device further includes a reset detection switch for detecting whether the powder pressing plate has returned to the correct position after pressing the powder. The reset detection switch is installed outside the spiral rod sleeve and does not hinder the movement of the powder pressing plate.

[0037] Beneficial effects: The present invention is cleverly designed, compact in structure and easy to operate; it changes the traditional powder pressing method which has only a single method, and uses a spiral powder pressing structure to scrape and preliminarily compact the coffee powder in the filter, and then uses an impact block to impact a powder pressing plate, which moves vertically downward to impact the coffee powder in the filter, and finally compacts the coffee powder; so the present invention has both rotary powder pressing and instantaneous impact powder pressing functions; it can solve the technical problems of existing coffee powder compacting devices that the compacted powder is not flat enough, the compaction degree is not high enough, the compaction degree is not uniform enough, and it is unhygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of the present invention without the gear ring cover.

[0039] Figure 2 It is a schematic diagram of the structure of the present invention before powder pressing.

[0040] Figure 3 It is a schematic diagram of the structure of the present invention when grinding beans.

[0041] Figure 4 It is a schematic diagram of the structure of the rotary powder pressing of the present invention.

[0042] Figure 5 It is a schematic diagram of the structure of the impact powder pressing of the present invention.

[0043] Figure 6 It is an exploded view of the present invention.

[0044] Figure 7 Schematic diagram of the planetary gear layout of the present invention.

[0045] Figure 8 It is a schematic structural diagram of the driving rod and the driven rod of the present invention when they are meshed.

[0046] Fig. 9 It is a schematic structural diagram of the driving rod and the driven rod of the present invention when they are separated.

[0047] Fig.10 It is a partial structural schematic diagram of the handle reset check switch of the present invention.

[0048] Fig.11 It is a schematic diagram of the local structure when the filter seat of the present invention is installed in the correct position. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples.

[0050] like Figure 1-9As shown, the present invention discloses a coffee machine powder pressing device 1, which includes a handle 2, a bevel gear 5, a planetary gear 3, a gear ring 4, a gear ring cover 15, a driving rod 6 with a gear on the top, a driven rod 7, a powder pressing spiral rod 10 with threads inside and outside, a spiral rod seat 8, a powder pressing plate 11, a spiral rod sleeve 12, a filter 13, a filter seat 14, a shaft 17 for driving an impact block, an impact block 9, a supporter 22 of the filter seat, a spring A 16 on the driving rod, a spring B 18 on the impact block, and a spring C between the powder pressing spiral rod and the powder pressing plate. 21, a silicone ring 19 located in the groove outside the powder pressing screw rod, and a bean grinding assembly 23; the handle 2 is mounted on the bevel gear 5, and the bevel gear 5 is rotatably mounted on the screw rod sleeve 12; the gear ring cover 15 is buckled on the gear ring 4; the impact shaft 17 is connected to the impact block 9, and the impact block 9 is connected to the powder pressing plate 11; the planetary gear 3 is installed in the gear ring 4 and meshes with the upper end of the driving rod 6; the driving rod 6 and the driven rod 7 are mounted together, and the driving rod 6 drives the driven rod 7 to rotate; the screw rod seat 8 is fixed in the screw rod sleeve 12, and the inside and outside of the middle ring-shaped bone of the powder pressing screw rod 10 are It is a threaded structure, and is screwed with the outer thread of the driven rod 7 and the inner thread of the spiral rod seat 8 through internal and external threads respectively; the powder pressing plate 11 is installed under the powder pressing spiral rod 10, and the powder pressing plate performs a spiral motion driven by the powder pressing spiral rod 10 to scrape and preliminarily compact the coffee powder in the filter 13; the impact block 9 impacts the powder pressing plate 11, and the powder pressing plate 11 moves vertically downward to impact the coffee powder in the filter 13, thereby compacting the coffee powder; the supporter 22 is fixedly installed at the bottom port of the spiral rod sleeve 12, and the filter 13 is installed in the filter seat 14; the bean grinding assembly 23 is connected to the spiral rod sleeve 12.

[0051] After adopting the above structure, the bevel gear can be driven to rotate by turning the handle, and then the row gear can be driven to rotate, the driving rod can be driven to rotate, the driven rod can be driven to rotate, and then the powder pressing spiral rod can be driven to rotate, so as to achieve the scraping and preliminary compaction of the coffee powder; secondly, under the action of the impact shaft and spring B, the impact block impacts the powder pressing plate, and the powder pressing plate moves vertically downward to impact the coffee powder in the filter, and finally the coffee powder is compacted. Therefore, the present invention has two functions of rotary powder pressing and instant impact powder pressing, which can scrape the coffee powder flat, and solve the problem of uneven powder pressing by the powder pressing plate, and the double powder pressing function can improve the compaction of the coffee powder.

[0052] Preferably, the filter 13 is below the powder pressing plate 11 and installed inside the filter seat 14, which contains ground coffee powder. The powder pressing plate 11 spirally moves to scrape the coffee powder in the filter 13 flat and preliminarily compact the coffee powder in the filter 13, so that the flatness of the squeezed coffee powder can be guaranteed and preliminary squeezing can be achieved.

[0053] Since the spiral rod sleeve 12 is outside the powder pressing spiral rod 10, it guides and positions the powder pressing spiral rod 10, ensuring that the direction of the powder pressing plate is vertical, thereby ensuring that the compaction degree of the coffee powder after extrusion is consistent.

[0054] Preferably, the powder pressing plate 11 is installed under the powder pressing screw 10 through the hole in the middle of the powder pressing screw 10, and performs spiral motion driven by the powder pressing screw 10 to slowly apply the squeezing force to ensure that the squeezed coffee powder is flat.

[0055] Preferably, the coffee powder ground by the bean grinding assembly 23 falls into the filter 13 through the coffee powder channel 20 .

[0056] Preferably, after the coffee powder falls into the filter 13, the handle 2 is rotated clockwise to start pressing the powder.

[0057] Specifically, the driving rod 6, the driven rod 7, the powder pressing screw 10, the screw rod seat 8 and the powder pressing plate 11 constitute a spiral powder pressing structure for pressing powder in spiral motion. The bevel gear 5 drives the planetary gear 3, which in turn drives the driving rod 6 to rotate. The driving rod 6 drives the driven rod 7, thereby realizing the spiral motion of the powder pressing screw 10. Driven by the powder pressing screw 10, the powder pressing plate 11 performs a spiral motion to scrape and preliminarily compact the coffee powder in the filter.

[0058] Since the driven rod 7 is installed inside the powder compression screw rod 10 and they are matched and transmitted through threads, the powder compression screw rod is driven by the driven rod to perform spiral motion under the action of the screw rod sleeve 12.

[0059] Preferably, when the powder compacting screw rod 10 moves downward to compact the powder, the powder compacting screw rod 10 will block the outlet of the coffee powder channel 20, so that the coffee powder on the coffee powder outlet will not fall into the spiral rod sleeve 12, so each time the powder is compacted, new coffee powder from the grinding bean assembly can be prevented from entering the filter again to interfere with the powder compacting.

[0060] Preferably, the movement direction of the powder pressing plate 11 is reversible, so that after the powder pressing is completed, the handle 2 is rotated counterclockwise and the powder pressing plate can be reset to the position at the beginning of the powder pressing.

[0061] Specifically, the impact shaft 17, the impact block 9 and the powder pressing plate 11 constitute an impact powder pressing structure. The elastic potential energy formed by the spring B18 installed between the impact shaft 17 and the impact block 9 when the powder pressing screw 10 presses the powder is combined with the gravitational potential energy of the impact block to be converted into the kinetic energy of the impact block. The impact block 9 impacts the powder pressing plate 11, and the powder pressing plate 11 impacts the coffee powder in the filter 13.

[0062] Specifically, the handle 2 is rigidly connected to the bevel gear 5 , and the handle 2 is used to rotate the bevel gear 5 .

[0063] Specifically, the bevel gear 5 is installed on the shaft on the side of the spiral rod sleeve 12 through the circular hole in the middle thereof, and the bevel gear 5 can rotate on the shaft.

[0064] Preferably, the bevel gear 5 is on the right side of the handle 2, and is rigidly connected to the handle through the hexagonal hole in the middle. Therefore, when pressing powder, the handle is rotated clockwise, and the clockwise rotation of the handle will drive the bevel gear to rotate clockwise, thereby driving the driving rod.

[0065] Specifically, the structure outside the gear ring 4 is a bevel gear, and the structure inside the gear ring 4 is a spur gear.

[0066] Preferably, the ring gear 4 is installed on the upper side of the spiral rod sleeve 12 and the lower side of the ring gear cover 15, and is used to drive the three planetary gears 3 therein to rotate. When the bevel gear 5 rotates clockwise, it will drive the ring gear to rotate counterclockwise.

[0067] Specifically, the bevel gear 5 is meshed with the ring gear 4 through gears, and the rotation of the bevel gear drives the ring gear to rotate.

[0068] Preferably, there are three planetary gears 3, and the three planetary gears 3 are evenly installed inside the ring gear 4, and the gears are meshed therebetween, so that the rotation of the ring gear 4 drives the three planetary gears to rotate.

[0069] Preferably, the upper part of the driving rod 6 has a gear, which is installed in the middle of the three planetary gears 3. The driving rod and the three planetary gears are meshed through gears. The rotation of the three planetary gears drives the driving rod to rotate. The driving rod is driven to rotate by the planetary gears, so that the driving rod rotates more smoothly and with smaller errors.

[0070] Preferably, a compression spring A 16 is mounted on the driving rod 6, and the upper end of the spring A 16 is supported by the gear ring cover, so that the driving rod 6 is subjected to the downward elastic force of the spring A 16.

[0071] Preferably, the upper and lower mating surfaces of the driving rod 6 and the driven rod 7 are triangular tooth structures, which can be in an engaged, semi-engaged or disengaged state.

[0072] Preferably, the outer surface of the driven rod 7 is a threaded structure.

[0073] Preferably, the inner side of the spiral rod seat 8 is a threaded structure.

[0074] Preferably, the powder pressing plate 11 is rigidly connected to the powder pressing screw rod in the transverse direction, so that the spiral motion of the powder pressing screw rod can drive the synchronous spiral motion of the powder pressing plate; in the longitudinal direction, the axis of the powder pressing plate passes through the circular hole in the middle of the powder pressing screw rod, so that the powder pressing plate can move vertically up and down inside the spiral rod sleeve.

[0075] Specifically, the filter 13 is located directly below the powder pressing plate 11, and the coffee powder of the bean grinding assembly 23 falls into the filter 13. The powder pressing plate 11 moves in a spiral motion to scrape and preliminarily compact the coffee powder in the filter 13.

[0076] Specifically, when the powder pressing plate 11 does not contact the coffee powder in the filter, the driving rod 6 and the driven rod 7 are meshed through the triangular teeth, and the rotation of the driven rod causes the powder pressing spiral rod 10 to perform a spiral motion.

[0077] Specifically, when the powder pressing plate 11 continues to move downward after contacting the coffee powder in the filter 13, the resistance of the coffee powder to the powder pressing plate 11 will gradually increase; the resistance encountered by the powder pressing plate 11 is transmitted to the powder pressing screw 10, resulting in an increase in the torsion of the powder pressing screw 10; the torsion of the powder pressing screw is transmitted to the driven rod 7, resulting in an increase in the torsion of the driven rod 7; the torsion of the driven rod 7 is transmitted to the driving rod 6, resulting in an increase in the torsion of the driving rod; when the torsion of the driving rod increases, the driving rod 6 will overcome the elastic force of the spring A16 thereon and move upward; the upward movement of the driving rod 6 causes the driving rod 6 and the driven rod 7 to transition from an initial meshing state to a semi-meshing state and finally to a separation state.

[0078] Since the elastic force of the spring A16 on the driving rod is overcome by the driving rod 6 and the driven rod 7 each time they are separated, the resistance of the powder pressing spiral rod 10 is the same, that is, the resistance of the powder pressing plate 11 to the coffee powder in the filter 13 is the same, thereby ensuring that the pressure applied to the coffee powder in the filter is the same each time, and thus ensuring the consistency of the pressure when the coffee powder in the filter is initially compacted.

[0079] In the powder compacting device for a coffee machine, the impact shaft 17 passes through a circular hole in the middle of the powder compacting screw 10 , and the impact shaft 17 can rotate in the middle of the powder compacting screw 10 .

[0080] Preferably, there is a threaded screw hole at the bottom of the impact shaft 17, which is connected to the powder pressing screw rod 10 through a screw, and the spiral movement of the powder pressing screw rod 10 drives the shaft to move vertically up and down.

[0081] Preferably, the spring B18 is installed between the impact block 9 and the head of the impact shaft 17. When the impact shaft moves downward, the spring B18 is compressed, and the elastic potential energy of the spring B18 increases. The elastic potential energy provides the impact block 9 with the energy required to impact the powder pressing plate 11.

[0082] Preferably, there is a hanging platform inside the driven rod 7; before impacting and compacting the powder, the impact block 9 is on the hanging platform of the driven rod.

[0083] Specifically, the impact shaft 17 is in the middle of the driving rod 6 , and the square head of the impact shaft 17 matches with the square hole of the driving rod. The rotation of the driving rod 6 drives the impact shaft 17 to rotate synchronously.

[0084] The lower end of the impact shaft 17 passes through the circular hole at the bottom of the powder pressing screw rod 10 and is connected to the powder pressing screw rod 10 by a screw. The impact shaft 17 can rotate in the hole of the powder pressing plate 11.

[0085] Specifically, the impact shaft 17 is fixedly connected to the powder pressing plate 11 in the height direction and cannot move relative to it.

[0086] Preferably, the hole in the middle of the impact block 9 is a square hole, and the portion of the impact shaft 17 passing through the square hole is a square that matches the square hole, and the rotation of the impact shaft 17 drives the impact block 9 to rotate.

[0087] In actual operation, when the resistance of the coffee powder in the filter is small under the powder pressing plate 11, the driving rod 6 is engaged with the driven rod 7. At this time, the driving rod 6 is rotated, and the driving rod 6, the driven rod 7, the impact shaft 17 and the impact block 9 will rotate synchronously, and the impact block is always above the driven rod hanging platform.

[0088] In actual operation, when the resistance of the coffee powder in the filter under the powder pressing plate 11 increases to a certain limit value, the driving rod 6 is separated from the driven rod 7. At this time, the driving rod 6 is rotated, and the driven rod 7 no longer rotates. The driving rod 6, the impact shaft 17 and the impact block 9 continue to rotate, and the impact block 9 will leave the hanging platform on the driven rod 7. Under the action of elastic potential energy and gravitational potential energy, the impact block 9 moves vertically downward at a relatively high speed to impact the powder pressing plate 11.

[0089] Specifically, the silicone ring 19 is installed on the groove outside the powder pressing screw 10 to form a seal between the powder pressing screw and the screw sleeve 12.

[0090] Specifically, a spring C21 is installed between the powder pressing screw 10 and the powder pressing plate 11 for resetting the powder pressing plate after being impacted; therefore, when the powder pressing plate is impacted by the impact block 9, it will be displaced in the height direction and leave the powder pressing screw 10, and the elastic force of the spring C21 can reset the powder pressing plate 11.

[0091] Preferably, a coffee powder inlet is opened in the middle of the spiral rod sleeve 12, and the spiral rod sleeve 12 is connected to the bean grinding assembly 23 through the coffee powder inlet.

[0092] Preferably, if Fig.11 As shown, a switch 24 is installed on the outside of the spiral rod sleeve 12, and the switch 24 is located above the filter seat 14. The switch 24 is used to detect whether the filter seat is installed in the correct position; only when the filter seat is installed in the correct position, the grinding assembly 23 can start grinding coffee beans, which can prevent coffee powder from falling onto the workbench.

[0093] Preferably, the gear ring cover 15 is connected to the spiral rod sleeve 12 by screws, and is used to position the gear ring 4, the planetary gear and the spring A 16.

[0094] Preferably, if Fig.10 As shown, the present invention also includes a reset detection switch 25 for detecting whether the powder pressing plate has returned to the correct position after pressing the powder. The reset detection switch 25 is installed outside the spiral rod sleeve 12 and does not hinder the movement of the powder pressing plate. Therefore, only when the powder pressing plate and the powder pressing spiral rod return to the initial position, the bean grinding assembly 23 can start grinding beans. At this time, the powder pressing plate 11 is above the powder outlet, and the powder outlet is not blocked, which can ensure that the ground coffee powder falls into the filter 13.

[0095] Preferably, when the handle 2 is reset to the correct position, the impact block 9 is reset just above the driven rod hanging platform, thereby ensuring that the impact block is above the driven rod hanging platform and supported by the hanging platform before each powder compression, ensuring that each powder compression has an impact function.

[0096] Preferably, the standard configuration of the device has both spiral motion powder pressing structure and instantaneous impact powder pressing structure. The device can also be simplified for use and can be simplified into two versions: ① only spiral motion powder pressing structure, ② only instantaneous impact powder pressing structure.

[0097] Preferably, the device is driven manually or by a motor, and the motor meshes with the gear ring through a gear set to drive the gear ring to rotate.

[0098] The coffee powder pressing device is a device used to compact a certain mass of coffee powder in a filter, and is mainly used for pressing coffee bean grinding machines, pressing coffee machines with bean grinding functions, pressing machines serving coffee machines, and pressing hammers.

[0099] The invention has an ingenious design, a compact structure and simple operation. It changes the traditional powder pressing method which has only a single method. The coffee powder in the filter is scraped flat and preliminarily compacted through a spiral powder pressing structure, and then the impact block impacts the powder pressing plate, and the powder pressing plate moves vertically downward to impact the coffee powder in the filter, and finally the coffee powder is compacted. Therefore, the invention has both the functions of rotary powder pressing and instantaneous impact powder pressing. It can solve the technical problems of the existing coffee powder compacting device that the compacted powder is not flat enough, the compaction degree is not high enough, the compaction degree is not uniform enough and it is unhygienic.

[0100] The above are only preferred implementation modes of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. It should be pointed out that for technicians in this technical field, any modification or equivalent replacement of the technical solution of the present invention without creative work does not depart from the protection scope of the technical solution of the present invention.

Claims

1. A coffee machine powder pressing device, It is characterized in that The invention comprises a handle (2), a bevel gear (5), a planetary gear (3), a ring gear (4), a ring gear cover (15), a driving rod (6), a driven rod (7), a powder pressing screw rod (10), a screw rod seat (8), a powder pressing plate (11), a screw rod sleeve (12), an impact block (9), an impact shaft (17) for driving the impact block, a filter (13), a filter seat (14), a support (22) for supporting the filter seat, and a grinding assembly (23); the handle (2) is sleeved on the bevel gear (5), and the bevel gear (5) is rotatably mounted on the screw rod sleeve (12); the ring gear cover (15) is buckled onto the ring gear (4); the impact shaft (17) is connected to the impact block (9), and the impact block (9) is connected to the powder pressing plate (11); the planetary gear (3) is mounted in the ring gear (4) and meshes with the upper end of the driving rod (6); the driving rod (6) and the driven rod (7) are sleeved together, The driving rod (6) drives the driven rod (7) to rotate; the spiral rod seat (8) is fixed in the spiral rod sleeve (12); the inner and outer sides of the annular rib of the powder pressing spiral rod (10) are both threaded structures, and are respectively screwed with the outer threads of the driven rod (7) and the inner threads of the spiral rod seat (8) through the inner and outer threads; the powder pressing plate (11) is installed under the powder pressing spiral rod (10); the powder pressing plate (11) is driven by the powder pressing spiral rod (10) to perform a spiral motion to scrape and preliminarily compact the coffee powder in the filter (13); the impact block (9) impacts the powder pressing plate (11), and the powder pressing plate (11) moves vertically downward to impact the coffee powder in the filter (13), thereby compacting the coffee powder; the support (22) is fixedly installed at the bottom port of the spiral rod sleeve (12), and the filter (13) is installed in the filter seat (14); the bean grinding assembly (23) is connected to the spiral rod sleeve (12).

2. The coffee machine powder pressing device according to claim 1, It is characterized in that The driving rod (6), the driven rod (7), the powder pressing screw rod (10), the screw rod seat (8) and the powder pressing plate (11) form a spiral powder pressing structure for pressing powder in a spiral motion. The bevel gear (5) drives the planetary gear (3), thereby driving the driving rod (6) to rotate. The driving rod (6) drives the driven rod (7), thereby realizing the spiral motion of the powder pressing screw rod. Driven by the powder pressing screw rod (10), the powder pressing plate (11) performs a spiral motion to scrape and preliminarily compact the coffee powder in the filter (13).

3. The coffee machine powder pressing device according to claim 1, It is characterized in that The impact shaft (17), the impact block (9) and the powder pressing plate (11) form an impact powder pressing structure. The elastic potential energy of the powder pressing screw (10) formed by the spring B (18) installed between the impact shaft (17) and the impact block (9) when the powder pressing screw (10) presses the powder is combined with the gravitational potential energy of the impact block (9) to be converted into kinetic energy of the impact block. The impact block (9) impacts the powder pressing plate (11), and the powder pressing plate (11) impacts the coffee powder in the filter (13).

4. The coffee machine powder pressing device according to claim 1, It is characterized in that The handle (2) is rigidly connected to the bevel gear (5), and the handle (2) is used to rotate the bevel gear (5); the bevel gear (5) is mounted on a shaft on the side of the spiral rod sleeve (12) through a circular hole in the middle thereof, and the bevel gear (5) can rotate on the shaft.

5. The coffee machine powder pressing device according to claim 1, It is characterized in that The structure outside the gear ring (4) is a bevel gear, and the structure inside the gear ring (4) is a spur gear; the bevel gear (5) is meshed with the gear ring (4) through gears, and the rotation of the bevel gear (5) drives the gear ring (4) to rotate.

6. The coffee machine powder pressing device according to claim 1, It is characterized in that There are three planetary gears (3), which are evenly distributed and mounted inside the ring gear (4), and are meshed with gears therebetween. The rotation of the ring gear (4) drives the three planetary gears (3) to rotate. The upper portion of the driving rod (6) is provided with a gear, which is mounted in the middle of the three planetary gears (3). The driving rod (6) and the three planetary gears (3) are meshed with gears. The rotation of the three planetary gears (3) drives the driving rod (6) to rotate.

7. The coffee machine powder pressing device according to claim 1, It is characterized in that A compression spring A (16) is mounted on the driving rod (6), and the upper end of the spring A (16) is supported by the gear ring cover (15), so that the driving rod (6) is subjected to the downward elastic force of the spring A (16); the upper and lower mating surfaces of the driving rod (6) and the driven rod (7) are triangular tooth structures, which can be in a meshing, semi-meshing or disengaged state.

8. The coffee machine powder pressing device according to claim 1, It is characterized in that The outer surface of the driven rod (7) is a threaded structure; the inner surface of the spiral rod seat (8) is a threaded structure.

9. The coffee machine powder pressing device according to claim 1, It is characterized in that The powder pressing plate (11) is rigidly connected to the powder pressing screw rod (10) in the transverse direction, so that the spiral motion of the powder pressing screw rod (10) can drive the powder pressing plate (11) to synchronously spirally move; in the longitudinal direction, the axis of the powder pressing plate (11) passes through the circular hole in the middle of the powder pressing screw rod (10), so that the powder pressing plate (11) can move vertically up and down inside the screw rod sleeve (12).

10. The coffee machine powder pressing device according to claim 1, It is characterized in that The filter (13) is located directly below the powder pressing plate (11), and coffee powder from the bean grinding assembly (23) falls into the filter (13). The powder pressing plate (11) moves in a spiral motion to scrape and preliminarily compact the coffee powder in the filter (13).

11. The coffee machine powder pressing device according to any one of claims 1 to 10, It is characterized in that When the powder pressing plate (11) does not contact the coffee powder in the filter, the driving rod (6) and the driven rod (7) are meshed through the triangular teeth, and the rotation of the driven rod causes the powder pressing spiral rod (10) to perform a spiral motion.

12. The coffee machine powder pressing device according to claim 7, It is characterized in that When the powder pressing plate (11) continues to move downward after contacting the coffee powder in the filter, the resistance of the coffee powder to the powder pressing plate (11) will gradually increase; the resistance to the powder pressing plate (11) is transmitted to the powder pressing spiral rod (10), resulting in an increase in the torque of the powder pressing spiral rod (10); the torque of the powder pressing spiral rod (10) is transmitted to the driven rod (7), resulting in an increase in the torque of the driven rod (7); the torque of the driven rod (7) is transmitted to the driving rod (6), resulting in an increase in the torque of the driving rod (6); when the torque of the driving rod (6) increases, the driving rod (6) will overcome the elastic force of the spring A (16) thereon and move upward; the upward movement of the driving rod (6) causes the driving rod (6) and the driven rod (7) to transition from an initial meshing state to a semi-meshing state and finally to a separation state; the gear ring cover (15) is connected to the spiral rod sleeve (12) by screws and is used to position the gear ring (4), the planetary gear and the spring A (16).

13. The coffee machine powder pressing device according to claim 1, It is characterized in that The impact shaft (17) has an internal thread at the lower end thereof, which passes through a circular hole at the bottom of the powder pressing screw rod (10). The impact shaft (17) can rotate in the circular hole of the powder pressing screw rod. The shaft is connected to the powder pressing screw rod (10) via a screw. The spiral movement of the powder pressing screw rod (10) drives the shaft to move vertically up and down.

14. The coffee machine powder pressing device according to claim 3, It is characterized in that The spring B (18) is installed between the impact block (9) and the head of the impact shaft (17). When the impact shaft (17) moves downward, the spring B (18) is compressed, and the elastic potential energy of the spring B (18) increases. The elastic potential energy provides the impact block with the energy required to impact the powder pressing plate. The driven rod (7) has a hanging platform inside. Before impacting the powder pressing plate, the impact block (9) is above the driven rod hanging platform.

15. The coffee machine powder pressing device according to claim 1, It is characterized in that The impact shaft (17) is located in the middle of the driving rod (6), the square head of the impact shaft (17) matches the square hole of the driving rod (6), and the rotation of the driving rod drives the impact shaft to rotate synchronously; the hole in the middle of the impact block (9) is a square hole, and the part of the impact shaft (17) that passes through the square hole is a square that matches the square hole, and the rotation of the shaft drives the impact block to rotate.

16. The coffee machine powder pressing device according to claim 1, It is characterized in that When the resistance of the coffee powder in the filter under the tamp plate (11) is small, the driving rod (6) is meshed with the driven rod (7). At this time, the driving rod (6) is rotated, and the driving rod (6), the driven rod (7), the impact shaft (17) and the impact block (9) are rotated synchronously, and the impact block is always on the upper side of the driven rod hanging platform. When the resistance of the coffee powder in the filter under the tamp plate (11) increases to a limit value, the driving rod (6) and the driven rod (7) are separated. At this time, the driving rod is rotated, the driven rod no longer rotates, and the driving rod, the impact shaft (17) and the impact block (9) continue to rotate. The impact block (9) leaves the hanging platform above the driven rod (7), and the impact block (9) moves vertically downward at a large speed to impact the tamp plate under the action of elastic potential energy and gravitational potential energy.

17. The coffee machine powder pressing device according to claim 1, It is characterized in that A silicone ring (19) is also installed on the groove outside the powder pressing screw rod (10) for forming a seal between the powder pressing screw rod (10) and the screw rod sleeve (12); a spring C (21) is installed between the powder pressing screw rod (10) and the powder pressing plate (11) for resetting the powder pressing plate (11) after being impacted.

18. The coffee machine powder pressing device according to claim 1, It is characterized in that A coffee powder inlet is provided in the middle of the spiral rod sleeve (12), and the spiral rod sleeve (12) is connected to the bean grinding assembly (23) via the coffee powder inlet; a switch (24) is installed outside the spiral rod sleeve, and the switch (24) is located above the filter seat (14). The switch (24) is used to detect whether the filter seat (14) is installed in a correct position.

19. The coffee machine powder pressing device according to claim 1, It is characterized in that It also includes a reset detection switch (25) for detecting whether the powder pressing plate (11) has returned to the correct position after pressing the powder. The reset detection switch (25) is mounted on the spiral rod sleeve (12).

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