A powder press

Abstract

This application discloses a coffee tamper for use with a coffee funnel. The tamper includes: an upper body having a through first chamber with ball grooves formed in the wall of the first chamber; a pressure plate surrounding one end of the upper body, the pressure plate having a second chamber with a plurality of graduated grooves arranged vertically on the wall of the second chamber; a ball assembly disposed within the ball grooves and capable of engaging with the graduated grooves as the upper body moves downwards vertically; and a lower body surrounding the other end of the upper body for connecting the upper body and the pressure plate. This application features a reasonable structural design, achieving precise pressure control and multi-flavor extraction through the innovative design of the ball assembly-gradient groove feedback system and reset structure.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, and in particular to a coffee tamper. Background Technology

[0002] Currently, the general steps for brewing a cup of aromatic coffee with a semi-automatic coffee machine are as follows: coffee beans are ground into powder using a grinder, the powder is then poured into the portafilter, and the powder is tampd down using a matching tamper. Finally, the coffee is brewed by the coffee machine. The tampering step still requires manual intervention. Commercial tampers use a fixed internal spring to adjust the pressure so that the user can tamp the powder properly. Sometimes, if the user wants to further extract the coffee, they need to increase the pressure and manually adjust the tamper spring pressure, which is extremely inconvenient for beginners.

[0003] For example, Chinese utility model patent CN204931363U discloses an easy-to-operate coffee tamper, including a hammer body and a handheld part connected to the upper part of the hammer body. The upper part of the hammer body has an external thread, and the inner side of the handheld part has an internal thread that mates with the external thread on the upper part of the hammer body. Different sizes of hammer bodies can be replaced by using the threads and screws. The hammer body has graduation lines, and the user can use the tamper to check whether the coffee grounds are properly tamped by looking at the graduation lines on the hammer body. This operation requires manual observation and is relatively cumbersome to use. Utility Model Content

[0004] The purpose of this application is to provide a coffee tamper for use with a coffee funnel, the coffee tamper comprising:

[0005] The upper body has a through first chamber, and a ball groove is formed on the wall of the first chamber;

[0006] A pressure plate is arranged around one end of the upper body. The pressure plate has a second chamber, and the wall of the second chamber has a plurality of graduated grooves arranged in sequence along the vertical direction.

[0007] A marble assembly is disposed in the marble groove and can move along with the upper body in the vertical direction to respectively engage with the multiple scale grooves;

[0008] The lower body is arranged around the other end of the upper body and is used to connect the upper body and the pressure plate;

[0009] A reset component, one end of which acts on the first chamber and the other end of which acts on the second chamber, is used to apply a force to the upper body to move it upward.

[0010] When the upper body moves downward in the vertical direction, it compresses the reset member and drives the ball assembly and the lower body to move downward. The ball assembly sequentially engages with multiple scale slots, so that the pressure plate applies different tamping forces to the coffee powder in the coffee funnel. After tamping is completed, the upper body, under the action of the reset member, drives the lower body to move upward and reset.

[0011] The ball bearing assembly in this application provides tactile feedback when the graduated groove engages, allowing users to determine the current tamping force level simply by touch, without needing to observe the pressure value. This solves the pain points of traditional tampers, such as the need for manual spring adjustment and the difficulty for beginners to accurately control the pressure. Furthermore, the automatic reset function of the reset component reduces manual adjustment steps, and the ball rebounds immediately after tamping, reducing operator fatigue and making it particularly suitable for high-frequency use scenarios.

[0012] As an optional embodiment, the upper body includes a first annular plate, a second annular plate, and a first connecting plate. The first annular plate is sleeved on the outside of the second annular plate, and a first annular groove is formed between the two. The first connecting plate connects the upper edge of the first annular plate and the upper edge of the second annular plate. The outer wall of the first annular plate is provided with an external thread that is threadedly connected to the lower body, and the ball groove is formed on the second annular plate.

[0013] The first annular plate and the second annular plate of this application are fixed by the first connecting plate to form a "rigid frame", which avoids the problem of easy shaking of the single ring structure, ensures uniform force transmission during powder pressing, and improves the flatness of powder pressing.

[0014] As an optional embodiment, the upper body further includes a second connecting plate and a third annular plate. The third annular plate is located inside the second annular plate and forms a second annular groove with the second annular plate. The outer periphery of the second connecting plate is connected to the middle inner periphery of the second annular plate, and the inner periphery of the second connecting plate is connected to the upper inner periphery of the third annular plate. One end of the reset member is connected to the second annular groove.

[0015] The second annular groove in this application provides a fixed cavity for the reset component, preventing it from shifting or becoming entangled, ensuring stable output of elastic force in the vertical direction, and improving pressure control accuracy. Furthermore, the third annular plate forms a multi-layered nested structure with the second annular plate, integrating functional modules such as the ball bearing assembly and the reset component within a limited volume, compressing the overall size, and adapting to miniaturized coffee machines or portable applications.

[0016] As an optional embodiment, the second annular plate has a larger vertical dimension than the first annular plate and its lower end protrudes beyond the lower end of the first annular plate, and the ball groove is located near the lower end of the second annular plate.

[0017] The ball groove of this application is close to the lower end of the second annular plate, so that the ball assembly can contact the scale groove in the early stage of powder pressing. The user can perceive the pressure change early in the pressing process and avoid excessive pressure due to excessive pressing.

[0018] As an optional embodiment, the second connecting plate is a flat plate and is horizontally arranged. The third annular plate and the second annular plate are concentrically arranged and their axes are both perpendicular to the second connecting plate. The vertical dimension of the second annular plate is larger than that of the third annular plate. The lower end of the second annular plate protrudes beyond the lower end of the third annular plate. The upper end of the third annular plate is lower than the lower end of the first annular plate and its lower end is higher than the lower end of the second annular plate.

[0019] The third annular plate of this application is parallel to the second annular plate, ensuring that the elastic force of the reset component is transmitted in the vertical direction, avoiding uneven pressure due to angular deviation, and improving the consistency of powder pressing.

[0020] As an optional embodiment, the third annular plate and the upper part of the second connecting plate form a concave cavity, and a top cover for sealing the cavity is provided inside the concave cavity.

[0021] The top cover of this application can prevent external debris from entering the recessed cavity and avoid contaminating the first chamber. Furthermore, the enclosed structure enhances the overall integrity of the product and prevents internal parts from being exposed, thus affecting its aesthetics.

[0022] As an optional embodiment, the pressure plate is a cylindrical structure with an open top and a closed bottom. A limiting ring is provided on the outer periphery of the open end to engage with the lower body, and the closed end is used to contact the coffee powder in the coffee funnel to form a tamping part.

[0023] The diameter of the closed end of this application matches the coffee funnel, ensuring a consistent force area during tamping and preventing uneven coffee powder distribution due to skewed tamping plates, which would affect extraction uniformity. The retaining ring engages with the lower body, allowing for separate disassembly and cleaning of the tamping plate.

[0024] As an optional embodiment, the lower body is an annular structure with an internal thread at its upper end that is threaded to the first annular plate, and a baffle at its lower end. When the lower body is connected to the pressure plate, the limiting ring engages with the baffle.

[0025] This application uses a threaded connection and a baffle to form a "double fixation", ensuring that the upper and lower main bodies move synchronously when pressed down, avoiding pressure loss or powder displacement due to loosening.

[0026] As an optional embodiment, the ball grooves are provided in multiple ways and distributed around the outer peripheral wall of the second annular plate. The inner wall of the second chamber is provided with multiple graduated grooves arranged in a vertical direction corresponding to any of the ball grooves, and the included angle between any two adjacent ball grooves is equal.

[0027] The evenly distributed ball bearing components in this application ensure consistent pressure in all directions during pressing, preventing the pressure plate from tilting due to single-point force and improving the flatness of the pressed powder. Any ball bearing component engaging with the graduated slot triggers tactile feedback, eliminating the need for users to precisely align with a particular ball bearing slot. Even with slight deviations in the grip angle, users can accurately perceive the pressure level, reducing operational difficulty.

[0028] As an optional embodiment, a plurality of the graduated grooves located on the same horizontal plane are connected to form an annular groove, and the distance between any two adjacent annular grooves is equal.

[0029] This application features vertically equidistant graduated grooves, ensuring a regular pressure change. Users can quickly estimate the pressure value by sensing the click-like movement during the downward stroke, improving operational predictability. The annular groove allows multiple ball bearing components to engage simultaneously, producing a more pronounced "click-like" sensation, enhancing tactile feedback, and preventing unclear feedback due to wear of a single ball bearing component, thus improving durability.

[0030] The beneficial effects of the embodiments of this application are as follows:

[0031] This application features a rationally designed structure. Through an innovative design of the ball bearing assembly-scaled groove feedback system and reset structure, it achieves precise pressure control and the extraction of diverse flavors. The core structure comprises the ball bearing groove on the upper body and the multi-level scaled grooves on the inner wall of the pressure plate. Each scaled groove corresponds to a preset pressure value, forming the physical basis for pressure adjustment. When the upper body is pressed down, the ball bearing assembly moves downward and sequentially engages with the scaled grooves. During this process, the reaction force generated by the reset component and the engaging action of the ball bearing assembly work together to transmit the current pressure level through tactile feedback such as vibration and engagement. Users do not need to observe numerical values; they can determine whether the target pressure has been reached solely by touch, lowering the operational threshold.

[0032] If the user needs to increase the pressure during use, they can continue to press down on the upper body to move the ball bearing assembly into the next graduated groove, obtaining a higher pressure value; conversely, releasing the pressure will reset the spring and reduce the pressure. This mechanism supports continuous pressure adjustment to meet the differentiated extraction pressure requirements of different coffee beans (such as light roast and dark roast). Attached Figure Description

[0033] Figure 1 This is an exploded view of the powder accelerator according to an embodiment of this application;

[0034] Figure 2 This is a cross-sectional view of the powder accelerator according to an embodiment of this application;

[0035] Figure 3 This is a schematic diagram of the powder accelerator in the powder accelerator state according to an embodiment of this application;

[0036] Figure 4 This is a cross-sectional view of the upper body of an embodiment of this application;

[0037] Figure 5 This is a cross-sectional view of the pressure plate according to an embodiment of this application;

[0038] Figure 6 This is a cross-sectional view of the lower body of an embodiment of this application.

[0039] in,

[0040] 1. Upper body; 101. First annular plate; 102. Second annular plate; 103. First connecting plate; 104. First annular groove; 105. Second connecting plate; 106. Third annular plate; 107. Second annular groove; 110. First chamber; 111. Concave cavity; 120. Ball groove; 2. Pressure plate; 201. Second chamber; 210. Scale groove; 220. Limiting ring; 3. Ball assembly; 4. Lower body; 401. Baffle; 5. Reset component; 6. Coffee funnel; 7. Top cover. Detailed Implementation

[0041] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0042] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0043] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0044] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0045] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0046] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0047] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0048] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0049] An embodiment of this application provides a coffee tamper for use with a coffee funnel 6, such as... Figure 1 and Figure 2 As shown, the powder press includes an upper body 1, a pressure plate 2, a ball assembly 3, a lower body 4, and a reset component 5.

[0050] The upper body 1 has a through first chamber 110, which is used to accommodate components such as the ball assembly 3 and the reset component 5. A ball groove 120 is formed on the cavity wall of the first chamber 110. The ball groove 120 is used to install the ball assembly 3. The ball assembly 3 can move in it and cooperate with the scale groove 210 on the pressure plate 2 to generate pressure feedback.

[0051] The pressure plate 2 is arranged around one end of the upper body 1. The pressure plate 2 has a second chamber 201, and the wall of the second chamber 201 has a plurality of graduated grooves 210 arranged in sequence along the vertical direction. Each graduated groove 210 corresponds to a different pressure value. The user can know the current pressure value applied to the coffee powder by engaging the ball assembly 3 with the different graduated grooves 210.

[0052] The scale groove 210 is preset with multiple pressure values ​​(such as 10 bar, 15 bar, 20 bar, etc.). Users can select different pressures through the downward stroke to meet different coffee extraction needs (such as high pressure for light roast beans and low pressure for dark roast beans), thereby improving the adjustability of coffee flavor.

[0053] The ball bearing assembly 3 is disposed within the ball bearing groove 120 and can move accordingly as the upper body 1 moves downward in the vertical direction to engage with the multiple graduated grooves 210 respectively, providing pressure feedback. During the powder pressing process, as the upper body 1 moves downward, the ball bearing assembly 3 passes through the graduated grooves 210 of the pressure plate 2, generating squeezing and releasing vibrations, which are fed back to the user with the current pressure value.

[0054] The lower body 4 is arranged around the other end of the upper body 1 and is used to connect the upper body 1 and the pressure plate 2. It moves synchronously with the upper body 1 during the powder pressing process.

[0055] One end of the reset element 5 acts on the first chamber 110, and the other end acts on the second chamber 201, applying a force to the upper body 1 to move it upward. The reset element 5 is typically a spring; when the user releases their hand after pressing the powder, the spring reacts to the lower body 4 and the upper body 1, achieving a reset effect.

[0056] When the upper body 1 moves downwards vertically, it compresses the reset member 5 and drives the ball bearing assembly 3 and the lower body 4 downwards. The ball bearing assembly 3 sequentially engages with multiple graduated grooves 210, causing the pressure plate 2 to apply different tamping forces to the coffee powder in the coffee funnel 6. After tamping is complete, the upper body 1, under the action of the reset member 5, drives the lower body 4 upwards and resets. The coffee funnel 6 contains a coffee powder bowl for holding the coffee powder.

[0057] In this embodiment, the user presses down on the top cover 7 and upper body 1 of the tamper with their palm, causing the upper body 1, lower body 4, and reset component 5 to descend together. During the descent, the ball bearing assembly 3 inside the upper body 1 passes through the graduated groove 210 inside the pressure plate 2, generating squeezing and releasing vibrations, which are then fed back to the user with the current pressure value. The user can continue to press down to obtain greater tamping pressure. Once the user has obtained the desired coffee powder pressure, they release their hand, and the reset component 5 reacts to the lower body 4, top cover 7, and upper body 1, causing them to move upwards and reset.

[0058] This application provides visual feedback on pressure, allowing users to precisely control tamping pressure by feel without needing additional equipment to observe pressure values. This meets the extraction needs of different coffee beans and enhances coffee flavor. At the same time, the automatic reset function simplifies the operation process, lowers the barrier to entry, and improves the user experience.

[0059] In one embodiment, such as Figure 4 As shown, the upper body 1 includes a first annular plate 101, a second annular plate 102, and a first connecting plate 103. The first annular plate 101 is sleeved on the outside of the second annular plate 102, and a first annular groove 104 is formed between them. The first connecting plate 103 connects the upper edge of the first annular plate 101 and the upper edge of the second annular plate 102. The outer wall of the first annular plate 101 is provided with an external thread that is threaded to the lower body 4. The ball groove 120 is opened on the second annular plate 102.

[0060] In this embodiment, the upper body 1 adopts a specific double-ring plate and connecting plate structure, and the first connecting plate 103 can block the upper port of the first annular groove 104. Furthermore, the size of the first annular groove 104 is larger than the size of the limiting ring 220 of the pressure plate 2, so that the first annular groove 104 has sufficient space to accommodate the limiting ring 220. The space formed by the first annular groove 104 and the lower body 4 allows the upper body 1 to move the ball assembly 3, the lower body 4, and the reset member 5 without being affected during vertical movement.

[0061] During operation, its stable structure ensures that the force applied by the user is evenly transmitted to the lower body 4 and the pressure plate 2 through the first annular plate 101, the second annular plate 102 and the first connecting plate 103, thus ensuring the uniformity of force during the powder pressing process. At the same time, the connection method between the external thread and the lower body 4 ensures that the overall structure does not loosen during operation.

[0062] This application enhances structural stability, ensures uniform force transmission, and improves the flatness of the pressed powder; the external thread connection facilitates disassembly and maintenance, reducing maintenance costs; the precise positioning of the ball groove 120 makes the pressure feedback more direct and rapid.

[0063] In one embodiment, such as Figure 4 As shown, the upper body 1 also includes a second connecting plate 105 and a third annular plate 106. The third annular plate 106 is located inside the second annular plate 102 and forms a second annular groove 107 between it and the second annular plate 102. The outer periphery of the second connecting plate 105 is connected to the inner periphery of the middle part of the second annular plate 102. The inner periphery of the second connecting plate 105 is connected to the upper inner periphery of the third annular plate 106. One end of the reset member 5 is connected to the second annular groove 107.

[0064] In this embodiment, the added third annular plate 106 and second annular groove 107 provide a stable mounting position for the reset member 5. During operation, the spring extends and contracts stably within the second annular groove 107, ensuring that the elastic force on the upper body 1 is always output stably in the vertical direction, ensuring the accuracy of pressure control, and avoiding pressure instability caused by spring position deviation.

[0065] This application provides a stable installation space for the reset component 5, ensuring stable output of elastic force and improving pressure control accuracy; the optimized spatial layout is conducive to the miniaturization design of the powder press and adapting to more application scenarios.

[0066] In another embodiment, such as Figure 4 As shown, the second annular plate 102 has a double-layer structure, with its outer layer connected to the first connecting plate 103 and its inner layer connected to the second connecting plate 105 to enhance the strength of the structure.

[0067] In one embodiment, such as Figure 4 As shown, the second annular plate 102 has a larger vertical dimension than the first annular plate 101, and its lower end protrudes beyond the lower end of the first annular plate 101. The ball groove 120 is located near the lower end of the second annular plate 102.

[0068] In this embodiment, the lower end of the second annular plate 102 protrudes and the ball groove 120 is located close to the lower end. When the user initially presses down on the main body 1, the ball assembly 3 can interact with the scale groove 210, allowing the user to perceive the pressure change early. This application provides early pressure perception to avoid excessive pressure.

[0069] In one embodiment, such as Figure 4 As shown, the second connecting plate 105 is a flat plate and is horizontally arranged. The third annular plate 106 and the second annular plate 102 are concentrically arranged and their axes are both perpendicular to the second connecting plate 105. The vertical dimension of the second annular plate 102 is larger than that of the third annular plate 106. The lower end of the second annular plate 102 protrudes beyond the lower end of the third annular plate 106. The upper end of the third annular plate 106 is lower than the lower end of the first annular plate 101 and its lower end is higher than the lower end of the second annular plate 102.

[0070] In this embodiment, the structure of the third annular plate 106 allows sufficient space within the first chamber 110 to install other components (such as the top cover 7 mentioned below), and the top cover 7 protects the structure within the first chamber 110. Simultaneously, the parallel design of the third annular plate 106 and the second annular plate 102 ensures that the elastic force of the reset member 5 is transmitted vertically, resulting in more uniform powder pressing. This application provides a structural basis for functional expansion and ensures vertical transmission of elastic force, further improving the uniformity of powder pressing.

[0071] In one embodiment, such as Figure 2 and Figure 4 As shown, the third annular plate 106 and the second connecting plate 105 form a concave cavity 111 above each other, and a top cover 7 for sealing the cavity 111 is provided inside the cavity.

[0072] In this embodiment, the top cover 7 seals the cavity 111 to prevent external debris from entering. During long-term use of the powder accelerator, this protects any components that may be inside the cavity 111, extends the service life of the powder accelerator, improves the cleanliness of the product appearance, and does not affect normal powder acceleration operations.

[0073] The top cover 7 has a buckle hole on its outer peripheral wall, and a buckle is provided in the cavity 111. When the top cover 7 is installed on the upper body 1, the buckle engages with the buckle hole.

[0074] When using this product, the user presses down on the top cover 7 and the upper body 1 with their palm. The top cover 7 serves to protect the internal structure and provide a point of force for the user. The top cover 7 can protect the internal structure, extend the service life of the powder accelerator, and improve the appearance, meeting the user's demand for product aesthetics.

[0075] In one embodiment, such as Figure 5 As shown, the pressure plate 2 is a cylindrical structure with an open top and a closed bottom. A limiting ring 220 is provided on the outer periphery of its open end to engage with the lower body 4. Its closed end is used to contact the coffee powder in the coffee funnel 6 to form a powder pressing part.

[0076] In this embodiment, the cylindrical structure of the pressure plate 2 and the design of the limiting ring 220 ensure consistent tamping area during operation, resulting in uniform pressure on the coffee powder and better extraction. The limiting ring 220 facilitates the individual disassembly and cleaning of the pressure plate 2, meeting hygiene requirements and ensuring cleanliness during frequent use. This application ensures consistent tamping area, improves coffee extraction uniformity, and facilitates disassembly and cleaning, meeting hygiene standards.

[0077] In one embodiment, such as Figure 6 As shown, the lower body 4 is an annular structure, with an internal thread at its upper end that is threaded to the first annular plate 101, and a baffle 401 at its lower end. When the lower body 4 is connected to the pressure plate 2, the limiting ring 220 engages with the baffle 401.

[0078] In this embodiment, the lower body 4 is connected to the upper body 1 by threads, and the lower end baffle 401 is engaged with the limiting ring 220 of the pressure plate 2. During the powder pressing operation, the upper body 1 and the lower body 4 move synchronously and the force transmission is reliable.

[0079] In one embodiment, such as Figure 4 As shown, the ball grooves 120 are provided in multiple ways and distributed around the outer peripheral wall of the second annular plate 102. The inner wall of the second chamber 201 is provided with multiple scale grooves 210 arranged in a vertical direction corresponding to any of the ball grooves 120. The included angle between any two adjacent ball grooves 120 is equal.

[0080] In this embodiment, multiple ball bearing grooves 120 are evenly distributed around the second annular plate 102, with adjacent ball bearing grooves 120 having equal included angles. For example, two, three, or four grooves are provided to ensure symmetrical pressure feedback in all directions during operation and to prevent the pressure plate 2 from tilting. During operation, the user does not need to precisely align with a particular ball bearing groove 120; even if the grip angle is off, the user can accurately perceive the pressure level.

[0081] This application ensures symmetrical pressure feedback, avoids misalignment of the pressure plate 2, improves powder pressing quality, increases operational error tolerance, reduces operational difficulty, and adapts to different user operating habits.

[0082] In one embodiment, such as Figure 5 As shown, multiple scale grooves 210 located on the same horizontal plane are connected to form annular grooves, and the distance between any two adjacent annular grooves is equal.

[0083] In this embodiment, the scale grooves 210 on the same horizontal plane are connected to form an annular groove, and the vertical distance between adjacent scale grooves 210 is equal. During operation, the pressure change is linear, and the user can quickly estimate the pressure value through the downward stroke. The multi-ball assembly 3 simultaneously engages with the annular groove, enhancing the feedback effect and improving the durability of the powder accumulator, providing stable pressure feedback during long-term, high-frequency use.

[0084] This application utilizes multiple vertically spaced graduated grooves 210 to ensure a regular pressure variation. Users can quickly estimate the pressure value by sensing the "clunking" sensation during the downward stroke, improving operational predictability. The annular groove allows multiple ball bearing components 3 to engage simultaneously, producing a more pronounced "clunking" sensation, enhancing tactile feedback, and preventing unclear feedback due to wear of a single ball bearing component 3, thus improving durability.

[0085] In one embodiment, the marble assembly 3 includes a housing, a bead, and a spring. The housing is embedded within the marble groove 120, and the bead is mounted within the housing via the spring. A first step is provided on the inner wall of the marble groove 120, and a second step is provided on the outer wall of the housing. When the marble assembly 3 is installed in the marble groove 120, the first step abuts against the second step.

[0086] In summary, the installation process for this application is as follows:

[0087] Prepare the parts and check that each component is intact, ensuring that the ball groove 120, scale groove 210, threads, and other structures are undamaged or blocked. Install the ball assembly 3 into the ball groove 120 of the upper body 1; place the reset piece 5 under the upper body 1, with one end of the reset piece 5 acting on the first chamber 110 of the upper body 1, preparing for the subsequent reset function. Place the upper body 1, with the reset piece 5 and ball assembly 3 installed, into the pressure plate 2, so that the upper body 1 and the pressure plate 2 are initially combined. At this time, the other end of the reset piece 5 corresponds to the second chamber 201 of the pressure plate 2.

[0088] Insert the lower body 4 from below the pressure plate 2 upwards until the lower body 4 is connected to the upper body 1. Use the internal thread of the lower body 4 to engage with the external thread of the upper body 1, and rotate clockwise to tighten, thus fixing the upper body 1, the lower body 4 and the pressure plate 2, ensuring that the three are firmly connected and can move synchronously during powder pressing.

[0089] Align the buckle hole of the top cover 7 with the buckle position of the upper body 1, and press gently to fasten the top cover 7 onto the upper body 1, sealing off a specific area of ​​the upper body 1, protecting the internal structure, and providing a point of force for the user.

[0090] The usage process of this application is as follows:

[0091] After grinding the coffee beans into powder, pour them into the coffee powder bowl in coffee funnel 6. Use a tool to initially arrange the coffee powder to ensure it is relatively evenly distributed in the coffee powder bowl. Hold the tamper and gently place the closed end of the tamper plate 2 on the surface of the coffee powder, ensuring that the tamper plate 2 is in complete contact with the coffee powder and avoiding tilting.

[0092] The user presses their palm against the top cover 7 and the upper body 1, applying downward pressure. The upper body 1 then lowers the ball bearing assembly 3, the lower body 4, and the reset piece 5 together. During this descent, the ball bearing assembly 3 passes through the graduated groove 210 inside the pressure plate 2, generating compression and release vibrations, providing tactile feedback on the current pressure value. The user can choose to continue pressing to obtain greater pressure or stop pressing, depending on the desired coffee extraction flavor. For example, when making light roast coffee beans, a higher pressure (such as 15 bar) may be required; the user can judge by touch whether the appropriate pressure level has been reached and then stop.

[0093] Once the ideal pressing pressure is reached, the force applied to the top cover 7 is released, and the reset component 5 generates a reaction force, which drives the lower body 4, the top cover 7, and the upper body 1 to move upward and reset, completing one pressing operation.

[0094] Install the tamped coffee funnel 6 onto the semi-automatic coffee machine to brew coffee; remove the tamper 2 and clean it promptly to keep the tamper clean for the next use.

[0095] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A coffee tamper for use with a coffee funnel (6), characterized in that, The powder accelerator includes: The upper body (1) has a through first chamber (110), and a ball groove (120) is opened on the cavity wall of the first chamber (110); A pressure plate (2) is arranged around one end of the upper body (1). The pressure plate (2) has a second chamber (201). Multiple scale grooves (210) are arranged in sequence along the vertical direction on the wall of the second chamber (201). A marble assembly (3) is disposed in the marble groove (120) and can move with the upper body (1) downward in the vertical direction to respectively engage with the plurality of the scale grooves (210); The lower body (4) is arranged around the other end of the upper body (1) and is used to connect the upper body (1) and the pressure plate (2); The reset member (5) has one end acting on the first chamber (110) and the other end acting on the second chamber (201) to apply a force to the upper body (1) to move it upward. When the upper body (1) moves downward in the vertical direction, it compresses the reset member (5) and drives the ball assembly (3) and the lower body (4) to move downward. The ball assembly (3) sequentially engages with multiple scale slots (210), so that the pressure plate (2) applies different tamping forces to the coffee powder in the coffee funnel (6). After tamping is completed, the upper body (1) moves upward together with the lower body (4) under the action of the reset member (5) and resets.

2. The powder accelerator as described in claim 1, characterized in that, The upper body (1) includes a first annular plate (101), a second annular plate (102) and a first connecting plate (103). The first annular plate (101) is sleeved on the outside of the second annular plate (102), and a first annular groove (104) is formed between the two. The first connecting plate (103) connects the upper edge of the first annular plate (101) and the upper edge of the second annular plate (102). The outer wall of the first annular plate (101) is provided with an external thread that is threaded to the lower body (4). The ball groove (120) is opened on the second annular plate (102).

3. The powder accelerator as described in claim 2, characterized in that, The upper body (1) further includes a second connecting plate (105) and a third annular plate (106). The third annular plate (106) is located inside the second annular plate (102) and forms a second annular groove (107) with the second annular plate (102). The outer periphery of the second connecting plate (105) is connected to the inner periphery of the middle part of the second annular plate (102). The inner periphery of the second connecting plate (105) is connected to the upper inner periphery of the third annular plate (106). One end of the reset member (5) is connected to the second annular groove (107).

4. The powder accelerator as described in claim 3, characterized in that, The second annular plate (102) has a larger vertical dimension than the first annular plate (101) and its lower end protrudes from the lower end of the first annular plate (101). The ball groove (120) is located near the lower end of the second annular plate (102).

5. The powder accelerator as described in claim 4, characterized in that, The second connecting plate (105) is a flat plate and is horizontally arranged. The third annular plate (106) and the second annular plate (102) are concentrically arranged and their axes are perpendicular to the second connecting plate (105). The vertical dimension of the second annular plate (102) is larger than that of the third annular plate (106). The lower end of the second annular plate (102) protrudes beyond the lower end of the third annular plate (106). The upper end of the third annular plate (106) is lower than the lower end of the first annular plate (101) and its lower end is higher than the lower end of the second annular plate (102).

6. The powder accelerator as described in claim 5, characterized in that, The third annular plate (106) and the second connecting plate (105) together form a cavity (111), and a top cover (7) for sealing the cavity (111) is provided inside the cavity.

7. The powder accelerator as described in claim 2, characterized in that, The pressure plate (2) is a cylindrical structure with an open top and a closed bottom. A limiting ring (220) is provided on the outer periphery of the open end to engage with the lower body (4). The closed end is used to contact the coffee powder in the coffee funnel (6) to form a powder pressing part.

8. The powder accelerator as described in claim 7, characterized in that, The lower body (4) is an annular structure. Its upper end is provided with an internal thread that is threaded to the first annular plate (101), and its lower end is provided with a baffle (401). When the lower body (4) is connected to the pressure plate (2), the limiting ring (220) engages with the baffle (401).

9. The powder accelerator as described in claim 2, characterized in that, The ball groove (120) has multiple openings and is distributed around the outer peripheral wall of the second annular plate (102). The inner wall of the second chamber (201) is provided with multiple scale grooves (210) arranged in a vertical direction corresponding to any of the ball grooves (120). The included angle between any two adjacent ball grooves (120) is equal.

10. The powder accelerator as described in claim 9, characterized in that, The plurality of scale grooves (210) located on the same horizontal plane are connected to form an annular groove, and the distance between any two adjacent annular grooves is equal.

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