Brewing device for a fully automatic coffee machine

Abstract

The utility model relates to a kind of brewing device for full-automatic coffee machine, including powder cup, it has extraction cavity, for receiving coffee powder;Pushing powder seat is located in extraction cavity, and can move along the axis of powder cup in extraction cavity, make powder cup have powder receiving mode and scraping powder mode;Pushing mechanism includes transmission component and pushing component, pushing component is used to install the powder cup or pushing powder seat, drive component drives transmission component, drives pushing component to move with powder cup or pushing powder seat, to make powder cup switch between powder receiving mode and scraping powder mode.The utility model has the beneficial effect that: using the mounting rack meshing transmission of pushing gear and rack structure, replace the transmission mode of multiple push rods in prior art, reduce the matching error of multiple component linkage;The rigid meshing transmission of gear and rack has higher structural stability, can effectively avoid the jamming phenomenon caused by component deformation or misplacement in pushing process, significantly reduce transmission failure risk.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment for brewing coffee, and in particular to a brewing device for a fully automatic coffee machine. Background Technology

[0002] A fully automatic coffee machine is an appliance that can complete the entire coffee brewing process, including tamping, brewing, and removing coffee grounds. During use, coffee grounds enter the brewing chamber and are tamped into a coffee puck. Hot water passes through the coffee puck for extraction. The extracted coffee puck is pushed out by the pusher and scraped off by the scraper.

[0003] When ejecting the pressed powder, a ejection mechanism is needed to push out the powder cup formed at the bottom of the brewing chamber. Because the pressed powder has been extracted by high-temperature and high-pressure liquid, it is firmly adhered to the bottom of the extraction chamber, requiring a large pushing force to be applied. At the same time, after ejecting and scraping off the pressed powder, the extraction chamber needs to be returned to its original powder-receiving state.

[0004] Existing technologies use multiple push rods to push out the powder compact. This transmission method has poor stability in terms of transmission effect and is prone to jamming during the pushing process, leading to transmission failure. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a brewing device for a fully automatic coffee machine.

[0006] A brewing device for a fully automatic coffee machine, comprising, A coffee maker cup, which has an extraction chamber for receiving coffee grounds and accommodating the insertion of the brewing head; The coffee powder holder is located inside the extraction chamber and can move along the axis of the coffee powder cup inside the extraction chamber, so that the coffee powder cup has a coffee powder receiving mode and a coffee powder scraping mode that pushes out the coffee powder. The ejection mechanism includes a transmission component and an ejection component. The ejection component is used to mount the powder cup or powder pusher. The drive component drives the transmission component to move the ejection component, so that the powder cup can switch between powder receiving mode and powder scraping mode.

[0007] A further configuration of the above technical solution is as follows: the transmission component is an ejection gear, and the ejection component is a mounting frame with a rack and pinion structure; the ejection gear and the mounting frame mesh and drive each other, driving the mounting frame to move linearly relative to the ejection gear.

[0008] A further provision of the above technical solution is that the mounting frame is provided with a meshing groove capable of accommodating the rotation of the ejection gear, and an ejection rack and a retraction rack are provided on both sides of the meshing groove along the moving direction. The ejection gear meshes with the ejection rack and the retraction rack in sequence to realize the reciprocating motion of the mounting frame.

[0009] A further feature of the above technical solution is that the transmission area on the ejector gear is an arc-shaped area.

[0010] By adopting the above technical solution, the transmission area of ​​the pusher gear is arc-shaped. When the powder pusher moves to the powder scraping mode position, the gear can enter the "idle" state to prevent excessive transmission from causing component collision or damage, and further ensure the precision and controllability of the movement process.

[0011] A further setting of the above technical solution is: it also includes a cup holder, the powder cup is mounted on the cup holder, the back of the cup holder is provided with a mounting part, and the push-out gear is limited and mounted on the mounting part; The cup holder and the mounting bracket are connected by a guide.

[0012] A further provision of the above technical solution is that: a guide groove is provided on the mounting bracket, and a guide shaft extends from the cup holder and can be inserted into the guide groove.

[0013] By adopting the above technical solution, the mounting bracket has a guide groove, and the cup holder extends the guide shaft into the groove to form a sliding guide structure. The guide grooves are symmetrically distributed on both sides of the meshing groove, which can balance the lateral force when the mounting bracket moves, ensuring that it moves stably along the preset straight trajectory and avoiding deviation or shaking.

[0014] A further provision of the above technical solution is that: two guide grooves are provided, and they are located on both sides of the meshing groove.

[0015] A further provision of the above technical solution is that the powder pusher includes a filter plate and a push rod extending from the lower end of the filter plate, the push rod extending below the powder cup and being limitedly connected to the mounting bracket.

[0016] A further provision of the above technical solution is that: a limiting groove is provided at the lower part of the push rod, and a limiting clamp is provided on the mounting bracket that can form a constraint with the limiting groove.

[0017] By adopting the above technical solution, the push rod of the powder pusher is engaged with the limiting clamp of the mounting bracket through the limiting groove, achieving a rigid limiting connection between the powder pusher and the mounting bracket. This structure ensures that the two are completely synchronized during movement, avoiding displacement deviation of the powder pusher due to loose connection, ensuring the accuracy of the powder cake ejection position, and providing stable support for subsequent powder scraping and cleaning.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The mounting bracket with a push-out gear and rack structure is used for meshing transmission, replacing the transmission method of multiple push rods in the existing technology, which reduces the coordination error of multiple components; the rigid meshing transmission of gear and rack has higher structural stability, which can effectively avoid jamming caused by component deformation or misalignment during the pushing process, and significantly reduce the risk of transmission failure. 2. The mounting bracket has ejection and retraction racks on both sides of the meshing groove. The ejection gear engages with the two sets of racks in sequence, driving the mounting bracket to reciprocate and automatically switching the powder dispenser or powder cup between "powder receiving mode" and "powder scraping mode". This eliminates the need for additional complex control mechanisms, simplifying the operation process and improving the smoothness and efficiency of mode switching. Attached Figure Description

[0019] Figure 1 This is an exploded structural diagram of the present invention.

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention in powder receiving mode.

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention in powder scraping mode.

[0022] Figure 4 This is a schematic diagram of the back structure of this utility model.

[0023] Figure 5 This is a schematic diagram showing the separation of the push rod and the limit clamp.

[0024] The attached diagram is labeled: 100, powder cup; 101, extraction chamber; 200. Powder pusher seat; 210. Filter plate; 220. Push rod; 221. Limiting groove; 300. Ejection gear; 301. Transmission area; 400. Mounting bracket; 401. Engaging groove; 401.1. Ejecting rack; 401.2. Retracting rack; 402. Guide groove; 410. Crossbeam; 411. Limiting clamp; 411.1. Retaining rib; 500, Cup holder; 510, Mounting part; 520, Guide shaft. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] like Figure 1-5 As shown, this embodiment discloses a brewing device for a fully automatic coffee machine.

[0027] Specific reference Figure 1 As shown, including, Coffee powder cup 100, which has extraction chamber 101 for receiving coffee powder and accommodating the insertion of the brewing head; The powder pusher 200 is located inside the extraction chamber 101 and can move along the axis of the powder cup 100 inside the extraction chamber 101, so that the powder cup 100 has a powder receiving mode for receiving coffee powder and a powder scraping mode for pushing out the powder cake. The ejection mechanism includes a transmission component and an ejection component. The ejection component is used to mount the powder cup 100 or the powder pusher 200. The drive component drives the transmission component, causing the ejection component to move the powder cup 100 or the powder pusher 200, so that the powder cup 100 switches between powder receiving mode and powder scraping mode.

[0028] The above is the basic scheme of this embodiment.

[0029] In this embodiment, when the coffee powder holder 200 is at its lowest position at the bottom of the coffee powder cup 100, a complete receiving space is formed within the extraction chamber 101, which can fully receive and accommodate a fixed amount of coffee powder. This position is defined as the coffee powder receiving mode, as detailed below. Figure 2 As shown; when the coffee feeder 200 moves upward to the upper part of the coffee cup 100 under the action of the feeding mechanism, and its top is at least flush with or slightly higher than the opening of the upper part of the coffee cup 100, the extraction chamber 101 is completely blocked from the external channel, and external coffee powder can no longer enter the cavity. At this time, the coffee cup 100 is in the powder scraping mode, as shown in the following figure. Figure 3 As shown.

[0030] In the actual coffee extraction process, the coffee puck 100 first maintains the coffee-receiving mode to quantitatively receive the coffee powder, followed by the extraction of the coffee liquid. After the extraction process is completed, the control system issues a command to activate the drive component, which transmits power to the ejector component via a transmission mechanism, causing it to move linearly along a preset track. During this movement, the ejector component causes the coffee puck 100 or the ejector seat 200 to shift, resulting in relative movement between the coffee puck 100 and the ejector seat 200. The coffee puck 100 switches from the coffee-receiving mode to the scraping mode. During this transition, the extracted coffee puck is stably pushed to the top of the extraction chamber 101 by the ejector seat 200, providing accurate positioning for subsequent cleaning by the scraper.

[0031] Throughout the entire mode transition process, the drive component maintains stable operation, continuously outputting power through the transmission system. After the scraper has completely scraped away the coffee pouch, the transmission component once again drives the ejector component, causing it to move in the opposite direction along the original path. This gradually resets the coffee cup 100 from the scraping mode, eventually restoring it to its initial coffee-receiving position, preparing it for the next coffee extraction cycle.

[0032] In this embodiment, the driving component is any power element or transmission component that can drive the push-out gear 300 to rotate.

[0033] Specifically, the transmission component is an ejection gear 300, and the ejection component is a mounting bracket 400 with a rack and pinion structure; the ejection gear 300 and the mounting bracket 400 mesh and drive each other, driving the mounting bracket 400 to move linearly relative to the ejection gear 300.

[0034] Preferably, in this embodiment, the driving component is a motor, and the powder pusher 200 is mounted on the pushing component, that is, the transmission component drives the powder pusher 200 to move.

[0035] The mounting frame 400 is provided with a meshing groove 401 that can accommodate the rotation of the ejection gear 300. The meshing groove 401 is provided with an ejection rack 401.1 and a retraction rack 401.2 on both sides along the moving direction. The ejection gear 300 meshes with the ejection rack 401.1 and the retraction rack 401.2 in sequence to realize the reciprocating motion of the mounting frame 400.

[0036] Specific reference Figure 1 and Figure 4 As shown, the meshing groove 401 adopts a strip-shaped groove design, which extends along the movement trajectory of the ejector gear 300. Inside the strip-shaped groove, on both sides of the ejector gear 300's movement direction, parallel rack structures are respectively provided. This design allows the ejector gear 300 to sequentially mesh with the racks on both sides: when the ejector gear 300 meshes with one rack, it drives the cup holder 500 or the powder pusher 200 to move in one direction; when it meshes with the other rack, it drives the powder pusher 200 to move in the opposite direction, thereby realizing the reciprocating motion of the powder pusher 200 along a straight line.

[0037] The meshing groove 401 contains two sets of racks with different functions: one set is the ejection rack 401.1, and the other set is the retraction rack 401.2, located on opposite sides of the groove. This special design allows the ejection gear 300 to precisely mesh with the racks in the meshing groove 401. When the ejection gear 300 meshes with the ejection rack 401.1, the ejection teeth move upward relative to the ejection rack 401.1 due to the rotation of the ejection gear 300, thereby driving the powder pusher 200 to move upward relative to the powder cup 100, ultimately ejecting the powder compact.

[0038] After the powder pusher 200 pushes the powder compact out completely, the scraper removes the powder compact. During this process, the drive component continues to drive the transmission component, while the push component is stationary at this time. In order to allow the transmission component to idle, in this embodiment, the transmission area 301 on the push gear 300 is an arc-shaped area.

[0039] The transmission area 301 on the ejector gear 300 is designed with an arc shape, meaning that only this part of the ejector gear 300 has transmission teeth and can transmit power to the ejector component, while the rest is a smooth surface and cannot transmit power to the ejector component. When the transmission area 301 moves to the uppermost position of the ejector rack 401.1, the meshing relationship is automatically disengaged. At this time, the ejector gear 300 enters an idle state, while the powder pusher 200 remains in the powder scraping position, completing one working stage.

[0040] As the ejector gear 300 continues to rotate, the transmission area 301 gradually rotates to the side where the return rack 401.2 is located. When the transmission area 301 and the return rack 401.2 mesh, their direction of motion changes: the transmission area 301 moves downward relative to the return rack 401.2, thereby driving the powder pusher 200 to move downward relative to the powder cup 100. This movement process realizes the functional conversion of the powder cup 100 from the powder scraping mode to the powder receiving mode, preparing for the next working cycle. The entire transmission process is ingeniously designed, and the components fit together tightly, ensuring the stability and reliability of the equipment operation.

[0041] To ensure the movement path of the powder dispenser 200, this embodiment also includes a cup holder 500, on which the powder cup 100 is mounted. The cup holder 500 has a mounting part 510 on its back, and the ejection gear 300 is limited and mounted on the mounting part 510. The cup holder 500 and the mounting bracket 400 are connected by a guide.

[0042] Preferably, in this embodiment, the mounting bracket 400 is provided with a guide groove 402, and the cup holder 500 extends with a guide shaft 520 that can extend into the guide groove 402.

[0043] Specific reference Figure 4 As shown, the guide groove 402 is configured as a strip groove and extends along the movement direction of the powder pusher 200. Its length can fully meet the movement stroke requirements of the mounting frame 400. The two guide grooves 402 are located on both sides of the meshing groove 401, adopting a symmetrical layout. This design can effectively balance the lateral forces experienced by the mounting frame 400 during movement, ensuring the stability and reliability of the entire mechanism during operation.

[0044] The guide shafts 520 are two short cylindrical shafts extending outward from the back of the cup holder 500, their diameters matching the width of the guide grooves 402. During operation, these two guide shafts 520 accurately insert into their corresponding guide grooves 402, forming a sliding pair. When the mounting bracket 400 is displaced by the push-out gear 300, the guide shafts 520 slide smoothly in a straight line within the limits of the guide grooves 402. This guide mechanism design not only ensures the accuracy of the movement trajectory but also effectively prevents the mounting bracket 400 from shifting or jamming during movement.

[0045] In this embodiment, the powder pusher 200 includes a filter plate 210 and a push rod 220 extending from the lower end of the filter plate 210. The push rod 220 extends below the powder cup 100 and is limitedly connected to the mounting bracket 400.

[0046] The filter plate 210 is movably installed in the extraction chamber 101 inside the powder cup 100. The push rod 220 is formed below the filter plate 210 and extends downward along the axial direction of the powder cup 100, penetrating the entire bottom structure of the powder cup 100. On the side of the mounting bracket 400 facing the push rod 220, a limiting structure protruding to that side is provided, which can firmly lock the lower end of the push rod 220. Through this ingenious limiting connection method, not only is reliable fixing between the powder pusher 200 and the mounting plate achieved, but it also ensures that the two can maintain a completely synchronized movement state during operation, thereby ensuring the stability and accuracy of the entire system.

[0047] Specifically, refer to Figure 5 As shown, in this embodiment, the specific implementation of the limiting structure is as follows: A horizontal beam 410 extends horizontally from the main structure of the mounting frame 400 toward the side where the push rod 220 is located. The end of the beam 410 is configured as a limiting clamp 411. The limiting clamp 411 consists of two symmetrically distributed clamping parts, which are arranged opposite each other to form a clamping space. A protruding retaining rib 411.1 is provided on the inner surface of each clamping part. At the same time, a limiting groove 221 matching the retaining rib 411.1 is provided at the lower part of the push rod 220 near the bottom. The size and shape of the limiting groove 221 can accommodate the retaining rib 411.1 on the clamping part, ensuring that the two can fit tightly together, thereby ensuring that the powder pusher 200 can be firmly installed on the mounting frame 400 and move synchronously with the mounting frame 400.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A brewing device for a fully automatic coffee machine, characterized in that: include, Coffee powder cup (100) has an extraction chamber (101) for receiving coffee powder and accommodating the insertion of the brewing head; The powder pusher (200) is located inside the extraction chamber (101) and can move along the axis of the powder cup (100) inside the extraction chamber (101), so that the powder cup (100) has a powder receiving mode for receiving coffee powder and a powder scraping mode for pushing out the powder cake; The ejection mechanism includes a transmission component and an ejection component. The ejection component is used to mount the powder cup (100) or the powder pusher (200). The drive component drives the transmission component to move the ejection component, so that the powder cup (100) or the powder pusher (200) can switch between powder receiving mode and powder scraping mode.

2. The brewing device for a fully automatic coffee machine according to claim 1, characterized in that: The transmission component is an ejection gear (300), and the ejection component is a mounting bracket (400) with a rack and pinion structure; the ejection gear (300) and the mounting bracket (400) mesh and drive each other, driving the mounting bracket (400) to move linearly relative to the ejection gear (300).

3. The brewing device for a fully automatic coffee machine according to claim 2, characterized in that: The mounting frame (400) is provided with a meshing groove (401) that can accommodate the rotation of the push-out gear (300). The meshing groove (401) is provided with a push-out rack (401.1) and a retraction rack (401.2) on both sides along the moving direction. The push-out gear (300) meshes with the push-out rack (401.1) and the retraction rack (401.2) in sequence to realize the reciprocating motion of the mounting frame (400).

4. The brewing device for a fully automatic coffee machine according to claim 2, characterized in that: The transmission area (301) on the ejector gear (300) is an arc-shaped area.

5. The brewing device for a fully automatic coffee machine according to claim 2, characterized in that: It also includes a cup holder (500), the powder cup (100) is mounted on the cup holder (500), the back of the cup holder (500) is provided with a mounting part (510), and the push-out gear (300) is limited and mounted on the mounting part (510); The cup holder (500) and the mounting bracket (400) are guided together.

6. The brewing device for a fully automatic coffee machine according to claim 5, characterized in that: The mounting bracket (400) has a guide groove (402), and the cup holder (500) has a guide shaft (520) extending into the guide groove (402).

7. The brewing device for a fully automatic coffee machine according to claim 6, characterized in that: Two guide grooves (402) are provided and located on both sides of the meshing groove (401).

8. The brewing device for a fully automatic coffee machine according to claim 2 or 6, characterized in that: The powder pusher (200) includes a filter plate (210) and a push rod (220) extending from the lower end of the filter plate (210). The push rod (220) extends below the powder cup (100) and is limitedly connected to the mounting bracket (400).

9. The brewing device for a fully automatic coffee machine according to claim 8, characterized in that: The lower part of the push rod (220) is provided with a limiting groove (221), and the mounting bracket (400) is provided with a limiting clamp (411) that can form a constraint with the limiting groove (221).

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