Coffee powder hammer and working method thereof

Abstract

The invention relates to the technical field of coffee making tools, in particular to a coffee powder hammer and a working method thereof. The coffee powder hammer comprises a force application assembly, an outer cover assembly and a powder pressing assembly. The force application assembly comprises a handle, a hammer body outer pipe and a damping rod, the upper ends of the hammer body outer pipe and the damping rod are both connected with the handle, and the damping rod is located in the hammer body outer pipe; the outer cover assembly comprises a hammer body upper cover and a base cover plate, the hammer body outer pipe is sleeved with the hammer body upper cover and the base cover plate, the upper end of the hammer body upper cover is connected with the hammer body outer pipe in a clamped mode, and an auxiliary spring is arranged between the hammer body outer cover and the base cover plate. The powder pressing assembly comprises a hammer body inner pipe and a powder pressing base, the hammer body inner pipe is embedded between the damping rod and the hammer body outer pipe, and the upper end of the powder pressing base is connected with the hammer body inner pipe. The coffee powder hammer solves the problems of non-uniform powder pressing, complex operation, material fatigue, unstable extraction, poor compatibility and the like in the use process of the existing coffee powder hammer.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee-making tools, and particularly to a coffee powder hammer and its working method. Background Art

[0002] A coffee powder hammer is an indispensable tool in the coffee-making process. Its main function is to evenly compact the ground coffee powder so that water can flow stably through the powder layer, thereby achieving a good extraction effect.

[0003] Currently, coffee powder hammers on the market are mainly divided into the following types: Fixed structure: The structure is simple and completely relies on the user's hand strength for compaction, and the pressing force cannot be adjusted. Spring structure: The pressing force is controlled by the elasticity of the spring, but the uniformity and stability of powder pressing are poor, and the pressure may become inaccurate due to spring fatigue. Spring + scale adjustment: The pressing force is adjusted by rotating the adjustment sleeve to change the telescopic length of the spring, but the user needs to manually adjust the pressure scale and rely on the user's understanding of the spring elasticity curve. Although this structure provides scale markings, the adjustment process is complex, vulnerable to human error, and the uniformity of powder pressing depth and force is limited. In addition, the long-term compression of the spring may cause material fatigue, affecting the service life and pressure accuracy.

[0004] The existing coffee powder hammers have the following technical problems:

[0005] ① Uneven powder pressing: The fixed structure and spring structure rely on the user's hand strength. Differences in the pressing force and angle of different users will result in uneven powder pressing, affecting the extraction effect.

[0006] ② Complex operation: The spring + scale adjustment structure requires the user to manually adjust the pressure scale and understand the principle of the spring elasticity curve, increasing the operation difficulty and being particularly unfriendly to novice users.

[0007] ③ Material fatigue: The spring structure is prone to elastic decline due to material fatigue during long-term use, affecting the accuracy of the pressing force and shortening the service life.

[0008] ④ Unstable extraction: When manually pressing the powder, excessive force may cause the water flow channel effect, resulting in over-extraction or under-extraction of coffee, affecting the taste and quality of the finished product. Summary of the Invention

[0009] Aiming at the deficiencies of the existing technology, the purpose of the embodiments of the present invention is to provide a coffee powder hammer to solve the problems of uneven powder pressing, complex operation, material fatigue, unstable extraction, and poor compatibility existing in the existing coffee powder hammers during use.

[0010] To achieve the above purpose, the embodiments of the present invention provide the following technical solutions:

[0011] A coffee powder hammer, comprising: a force application component, an outer cover component and a powder pressing component; the force application component includes a handle, an outer tube of the hammer body and a damping rod, the upper ends of the outer tube of the hammer body and the damping rod are both connected to the handle, and the damping rod is located inside the outer tube of the hammer body; the outer cover component includes an upper cover of the hammer body and a base cover plate, the upper cover of the hammer body and the base cover plate are sleeved on the outside of the outer tube of the hammer body, the upper end of the upper cover of the hammer body is clamped with the outer tube of the hammer body, and an auxiliary spring is arranged between the upper cover of the hammer body and the base cover plate; the powder pressing component includes an inner tube of the hammer body and a powder pressing base, the inner tube of the hammer body is embedded between the damping rod and the outer tube of the hammer body, and the upper end of the powder pressing base is connected to the inner tube of the hammer body.

[0012] Optionally, the center of the handle has a first threaded hole and a second threaded hole, the first threaded hole is located outside the second threaded hole, the upper end of the outer tube of the hammer body is threadedly connected to the first threaded hole, and the damping rod is threadedly connected to the second threaded hole.

[0013] Optionally, the upper end of the upper cover of the hammer body has a flanging structure bent inward, the outer wall of the outer tube of the hammer body is provided with an outwardly protruding snap ring, and the flanging structure is sleeved on the outer tube of the hammer body and is located between the snap ring and the handle.

[0014] Optionally, the inner sides of the upper cover of the hammer body and the base cover plate both have inner concave platforms, a receiving cavity is formed between the inner concave platforms and the outer tube of the hammer body, the auxiliary spring is installed in the receiving cavity, one end of the auxiliary spring abuts against the snap ring, and the other end abuts against the inner concave platform of the base cover plate.

[0015] Optionally, the outer cover component further includes a buffer sleeve, the lower end of the upper cover of the hammer body and the upper end of the base cover plate are threadedly connected, and the buffer sleeve is sleeved on the outside of the upper cover of the hammer body and the base cover plate.

[0016] Optionally, the base cover plate includes a bottom plate and an inner cylinder, the inner cylinder is located at the center of the bottom plate, an inner concave platform is arranged at the top of the inner side of the inner cylinder, the lower end of the auxiliary spring abuts against the inner concave platform of the inner cylinder, and a groove is formed between the top surface of the bottom plate and the outer cylinder, and the lower end of the buffer sleeve is embedded in the groove.

[0017] Optionally, the bottom plate of the base cover plate has a limiting ring, the limiting ring is located inside the inner cylinder, and the inner ring of the limiting ring is sleeved on the outer wall of the inner tube of the hammer body.

[0018] Optionally, the upper end inside the outer tube of the hammer body has an inner concave hole, the upper end of the inner tube of the hammer body is provided with a convex ring, and the convex ring of the inner tube of the hammer body is installed in the inner concave hole of the outer tube of the hammer body and can slide axially in the inner concave hole.

[0019] Optionally, a boss is provided at the center of the powder pressing base, and the lower end of the inner tube of the powder hammer is threadedly connected to the boss. An inner concave hole is formed in the middle of the boss, and a hammer head is provided at the lower end of the damping rod, and the hammer head can be press-fitted into the inner concave hole of the boss.

[0020] The embodiment of the present invention further provides a working method of the coffee powder hammer as described above, including: applying a downward pressure to the handle, and the outer tube of the hammer body slides along the inner tube of the hammer body as the handle is pressed down. At this time, the auxiliary spring is compressed between the outer tube of the hammer body and the base cover, so that the base cover closely adheres to the inner wall of the coffee powder cup; while the handle moves downward, it drives the damping rod to move downward, and further transmits the pressure to the powder pressing base, and the powder pressing base contacts and compacts the coffee powder layer under the push of the damping rod; after the handle releases the pressure, the damping rod and the auxiliary spring cooperate to reset, driving the force application assembly and the powder pressing assembly to return to the initial position.

[0021] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0022] 1. The coffee powder hammer of the present invention includes a force application assembly, an outer cover assembly and a powder pressing assembly. The force application assembly converts the hand force of the user into a uniform powder pressing force through the combination of the handle, the outer tube of the hammer body and the damping rod. The damping rod is located inside the outer tube of the hammer body and can automatically adjust the feeding and rebounding speeds according to the pressing force and amplitude of the user to ensure uniform powder pressing force. The outer cover assembly provides a stable reset function through the socket structure of the upper cover of the hammer body and the base cover, combined with the auxiliary spring, and ensures that the base cover closely adheres to the inner wall of the coffee powder cup. The inner tube of the hammer body of the powder pressing assembly is embedded between the damping rod and the outer tube of the hammer body, and the powder pressing base acts directly on the surface of the coffee powder to complete the powder pressing process. This structural design not only improves the uniformity of powder pressing, but also reduces human error through the automatic adjustment function of the damping rod, ensuring the consistency of each powder pressing. In addition, the sealed design of the whole structure effectively prevents the intrusion of coffee dust and liquid, and prolongs the service life.

[0023] 2. Compared with the existing powder hammers, the present invention can automatically optimize the powder pressing force, reduce human error, and ensure the uniformity and stability of powder pressing; provide adjustable pressure settings to meet the needs of different users and the compaction requirements of different coffee powders; adopt a replaceable powder pressing base to enhance compatibility and adapt to coffee powder bowls of various sizes; improve the operation comfort, reduce hand fatigue, and are especially suitable for novice users to quickly master the standard powder pressing method; improve the durability and service life, avoid spring fatigue problems, and ensure the pressure accuracy during long-term use. By integrating a hydraulic damping rod, optimizing the powder pressing structure and improving the operation comfort, the problems of operation error, uneven powder pressing and poor hand feeling existing in traditional powder hammers are effectively solved, and it is applicable to professional coffee houses, boutique baristas and home coffee lovers, and can significantly improve the extraction quality of coffee and bring a more stable and rich flavor experience.

[0024] 3. Inside the hammer body, a multi-nested tubular structure is formed among the inner tube of the hammer body, the outer tube of the hammer body, the upper cover of the hammer body, and the base cover plate. It not only limits each other to eliminate lateral slip but also can accurately guide. When the entire casing structure moves, there is only vertical displacement and no horizontal shaking or abnormal noise. Only a tiny gap is reserved between the diameters of the multi-nested structures as the thermal expansion and contraction allowance. Combined with high-precision machining and surface polishing, unnecessary movement and vibration are eliminated, making the overall structure very quiet during operation.

[0025] 4. All parts inside the powder hammer are limited in position to each other through the structure, and there are no adhesives, screws, or threaded structures inside, so there is no risk of any loosening or falling off, ensuring the stability of work. All threaded connections can be reached from the outside, making it easy to disassemble, clean, and maintain. Moreover, regardless of the length of the stroke, the size of the force, and in any usage mode, it can achieve very stable, accurate, and quiet movement and provide a very resilient tactile feedback.

[0026] Advantages of additional aspects of the present invention will be given in the following description, some of which will become obvious from the following description, or can be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In addition, the distances or sizes between components are exaggerated for showing their positions, and the schematic diagrams are only for illustration.

[0028] Figure 1 are the external shape and internal schematic diagrams of the powder hammer provided by the embodiments of the present invention;

[0029] Figure 2 is the schematic diagram of the handle provided by the embodiments of the present invention;

[0030] Figure 3 is the schematic diagram of the damping rod provided by the embodiments of the present invention;

[0031] Figure 4 is the first perspective schematic diagram of the upper cover of the hammer body provided by the embodiments of the present invention;

[0032] Figure 5 is the second perspective schematic diagram of the upper cover of the hammer body provided by the embodiments of the present invention;

[0033] Figure 6 is the schematic diagram of the outer tube of the hammer body provided by the embodiments of the present invention;

[0034] Figure 7 It is a schematic diagram of the inner tube of the hammer body provided by an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the buffer sleeve provided by an embodiment of the present invention;

[0036] Figure 9 It is a schematic diagram of the first perspective of the powder pressing base provided by an embodiment of the present invention;

[0037] Figure 10 It is a schematic diagram of the second perspective of the powder pressing base provided by an embodiment of the present invention;

[0038] Figure 11 It is a schematic diagram of the powder pressing base provided by an embodiment of the present invention;

[0039] In the figure: 1. Handle; 2. Damping rod; 21. Hammer head; 3. Outer tube of the hammer body; 31. Snap ring; 4. Upper cover of the hammer body; 41. Flanging structure; 5. Auxiliary spring; 6. Inner tube of the hammer body; 61. Convex ring; 7. Buffer sleeve; 8. Base cover plate; 81. Inner cylinder; 82. Bottom plate; 83. Limit ring; 9. Powder pressing base; 91. Convex platform; Detailed implementation manners

[0040] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanations of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present invention belongs. In addition, it should also be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] Embodiment 1

[0042] In order to solve the problems existing in the use of traditional coffee powder hammers, such as poor grip comfort, uneven powder pressing, easy powder jamming, high operation difficulty, and unstable extraction, this embodiment proposes a new type of coffee powder hammer. The damping rod 2 is used to automatically control the powder pressing force to ensure that the powder pressing pressure is consistent each time, reducing the operation threshold; a non-spring type pressure adjustment mechanism is adopted to avoid pressure attenuation caused by material fatigue and improve the long-term use stability; the internal sealing structure and the movement guiding design are optimized to reduce the deviation of the force on the powder layer, suppress the water flow channel effect, and improve the coffee extraction quality.

[0043] As Figure 1As shown in the figure, the coffee powder hammer includes a force application component, an outer cover component, and a powder pressing component; the force application component includes a handle 1, an outer tube 3 of the hammer body, and a damping rod 2. The upper ends of the outer tube 3 of the hammer body and the damping rod 2 are both connected to the handle 1, and the damping rod 2 is located inside the outer tube 3 of the hammer body; the outer cover component includes an upper cover 4 of the hammer body and a base cover plate 8. The upper cover 4 of the hammer body and the base cover plate 8 are sleeved on the outside of the outer tube 3 of the hammer body. The upper end of the upper cover 4 of the hammer body is clamped to the outer tube 3 of the hammer body, and an auxiliary spring 5 is arranged between the upper cover of the hammer body and the base cover plate 8; the powder pressing component includes an inner tube 6 of the hammer body and a powder pressing base 9. The inner tube 6 of the hammer body is embedded between the damping rod 2 and the outer tube 3 of the hammer body, and the upper end of the powder pressing base 9 is connected to the inner tube 6 of the hammer body.

[0044] Force application component: The handle 1 serves as the input end for the user to apply force, and the built-in damping rod 2 realizes hydraulic buffer control. The damping rod 2 is located inside the outer tube 3 of the hammer body, forming a nested structure, which not only saves space but also ensures the linearity of the force application path. Outer cover component: The upper cover 4 of the hammer body and the base cover plate 8 are fixed on the outside of the outer tube 3 of the hammer body by a sleeved manner, and the auxiliary spring 5 is located between them, providing a reset elastic force. This design ensures the automatic rebound after powder pressing through the synergistic effect of the spring and the hydraulic damper. Powder pressing component: The inner tube 6 of the hammer body is embedded between the damping rod 2 and the outer tube 3 of the hammer body, forming a triple nested sleeve structure, and its lower end is connected to the powder pressing base 9. The inner tube 6 of the hammer body forms a sliding guide with the outer tube 3 of the hammer body during movement, avoiding deviation in the direction of powder pressing. Through the nesting and coordination between components, stable powder pressing force transmission and precise movement guidance are achieved.

[0045] The handle 1 adopts an ergonomic streamline grip design, with a unique shape and appropriate size, making it easier for the user to apply force more comfortably and reducing hand fatigue during long-term frequent use. The handle 1 and the hammer body are made of high-quality aluminum alloy material (6061-T6 or 7075-T6) through precision machining, which combines lightweight and durability, has no peculiar smell, is easy to clean, and meets the catering industry specifications.

[0046] The damping rod 2 is a prior art and is obtained through outsourcing. A hydraulic damping rod 2 and a gas damping rod 2 (gas spring) can be used. The powder pressing force is precisely controlled through fluid damping technology, making the force received during each powder pressing more uniform and reducing human error.

[0047] The hydraulic damping rod 2 can automatically adjust the feeding and rebounding speeds according to the pressing force and amplitude of the user, ensuring a stable and smooth powder pressing process, avoiding extraction imbalance caused by sudden excessive pressure and pressure release, and then simulating the standard powder pressing force of a professional barista (usually about 15 - 30 pounds of pressure). Even a novice can easily obtain ideal extraction conditions.

[0048] The hydraulic damping rod 2 is equipped with a knob that can adjust the internal pressure damping, thereby achieving the adjustment of the applied pressure. Users can adjust the pressure of the hydraulic damping rod 2 according to their own needs, so as to achieve different powder pressing forces, meeting the personal preferences of different users and the requirements for compacting coffee powder with different roasting degrees and grinding degrees.

[0049] The base cover plate 8 is made of stainless steel, and its outer diameter corresponds to the inner diameter of the standard coffee powder cup. When pressing down, it can be stuck inside the powder cup, making the whole device sit firmly and flatly on the powder cup. The powder pressing base 9 is connected to the inner tube 6 of the hammer body, and directly acts on the surface of the coffee powder below to complete the powder pressing process.

[0050] As Figure 1 、 Figure 2 shown, the center of the handle 1 has a first threaded hole and a second threaded hole. The first threaded hole is located outside the second threaded hole. The upper end of the outer tube 3 of the hammer body is threadedly connected to the first threaded hole, and the damping rod 2 is threadedly connected to the second threaded hole.

[0051] This design with double threaded holes ensures the stable connection of the outer tube 3 of the hammer body and the damping rod 2, while providing an accurate force transmission path. The outer tube 3 of the hammer body is connected to the handle 1 through the first threaded hole, ensuring the stability of the outer tube. The damping rod 2 is connected to the handle 1 through the second threaded hole, ensuring the stability of the damping rod 2 during the pressing down and rebounding processes. This connection method not only improves the structural stability but also simplifies the assembly process. Of course, it can be understood that snap connection or other mechanical connection methods can also be used.

[0052] As Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 shown, the upper end of the upper cover 4 of the hammer body has a flanging structure 41 that bends inward. The outer wall of the outer tube 3 of the hammer body is provided with an outward protruding snap ring 31. The flanging structure 41 is sleeved on the outer tube 3 of the hammer body and is located between the snap ring 31 and the handle 1. The outward protruding design of the snap ring 31 and the cooperation of the flanging structure 41 form a mechanical stop to limit the return position of the outer tube 3 of the hammer body.

[0053] Both the inner sides of the upper cover 4 of the hammer body and the base cover plate 8 have concave platforms. An accommodation cavity is formed between the concave platforms and the outer tube 3 of the hammer body. The auxiliary spring 5 is installed in the accommodation cavity. One end of the auxiliary spring 5 abuts against the snap ring 31, and the other end abuts against the concave platform on the base cover plate 8.

[0054] This design provides a stable installation space for the auxiliary spring 5. The auxiliary spring 5 keeps the base cover plate 8 in a downward pressing trend, ensuring the tightness of the base cover plate 8 during use and quickly resetting it after releasing the pressure.

[0055] AsFigure 1 , Figure 8 As shown in Figure 8 , the outer cover assembly further includes a buffer sleeve 7. The lower end of the hammer upper cover 4 is threadedly connected to the upper end of the base cover plate 8. The buffer sleeve 7 is sleeved outside the hammer upper cover 4 and the base cover plate 8. The buffer sleeve 7 wraps the hammer upper cover 4 and the base cover plate 8, preventing the threads at the connection between the two from loosening, and playing a buffering and stabilizing role during use, improving comfort. The buffer sleeve 7 is made of an elastic material such as rubber or silica gel.

[0056] As Figure 1 , Figure 9 As shown in Figure 9 , the base cover plate 8 includes a bottom plate 82 and an inner cylinder 81. The inner cylinder 81 is located at the center of the bottom plate 82. At the top inside the inner cylinder 81, there is an inner concave platform. The lower end of the auxiliary spring 5 abuts against the inner concave platform of the inner cylinder 81. A groove is formed between the top surface of the bottom plate 82 and the outer cylinder. The lower end of the buffer sleeve 7 is embedded in the groove.

[0057] This design not only provides stable support for the auxiliary spring 5, but also ensures the correct installation position of the spring through the limiting effect of the inner cylinder 81. The groove formed between the top surface of the bottom plate 82 and the outer cylinder is used to fix the lower end of the buffer sleeve 7, ensuring the stable installation of the buffer sleeve 7. This structural design ensures the stability and directivity of the base cover plate 8 during use through multiple limitings and supports.

[0058] As Figure 10 As shown in Figure 10 , the bottom plate 82 of the base cover plate 8 has a limiting ring 83. The limiting ring 83 is located inside the inner cylinder 81. The inner ring of the limiting ring 83 is sleeved on the outer wall of the inner tube 6 of the hammer body. When the powder pressing base 9 is pressed into the powder cup during operation, the base cover plate 8 will slide upward, and the limiting effect is achieved through the limiting ring 83.

[0059] As Figure 1 , Figure 7 As shown in Figure 1 and Figure 7 , at the upper end inside the outer tube 3 of the hammer body, there is an inner concave hole. At the upper end of the inner tube 6 of the hammer body, there is a convex ring 61. The convex ring 61 of the inner tube 6 of the hammer body is installed in the inner concave hole of the outer tube 3 of the hammer body and can slide axially in the inner concave hole.

[0060] This design ensures the stable sliding of the inner tube 6 of the hammer body inside the outer tube 3 of the hammer body through mechanical limiting and guiding effects. The cooperation of the inner concave hole and the convex ring 61 not only provides precise guidance, but also prevents the inner tube 6 of the hammer body from shifting during movement through the limiting effect. Through high-precision machining, the stability and directivity of the movement are ensured, eliminating unnecessary shaking and abnormal noises.

[0061] As Figure 1 , Figure 3 , Figure 11As shown, the center of the powder pressing base 9 has a boss 91, the lower end of the powder hammer inner tube is threadedly connected to the boss 91, the middle of the boss 91 has an inner concave hole, and the lower end of the damping rod 2 has a hammer head 21, which can be crimped in the inner concave hole of the boss 91.

[0062] This design ensures the stability and accuracy of the powder pressing base 9 during use through threaded connection and mechanical limit. The matching design of the inner concave hole of the boss 91 and the hammer head 21 enables the pressure to be evenly transmitted to the coffee powder layer, avoiding the extraction problem caused by uneven pressure.

[0063] The powder pressing base 9 is replaceable and can be adapted to coffee powder bowls of different sizes and depths (such as 51mm and 58mm standard sizes) to enhance compatibility. The powder pressing base 9 is made of food-grade stainless steel and precision CNC turned to ensure the flatness of the base, improve the contact quality between the powder hammer and the coffee powder layer, and make the coffee powder more evenly stressed.

[0064] In summary, the tamper uses hydraulic buffering to adjust the powder pressing force. The force is adjusted through hydraulic fluid damping, which is friendly to novices. You only need to rotate different pressure gears, and the hydraulic buffering will automatically optimize the pressure to ensure uniform pressure and consistent powder pressing force, greatly reducing human errors. Fluid damping accurately controls pressure, reduces the "water channel effect", improves extraction uniformity, and makes the coffee flavor more stable and durable. The hydraulic damping rod 2 is more stable than the spring system, and there will be no elastic fatigue problem in long-term use.

[0065] Compared with the existing powder hammer, the powder hammer of the present invention has excellent internal sealing performance, which can prevent liquid and coffee dust from entering during use:

[0066] The hammer body inner tube 6 is tightly connected to the powder pressing base 9 through the internal thread at the bottom, and the convex ring 61 at the upper end is just stuck in the inner concave platform of the inner wall of the hammer body outer tube 3. The hammer body outer tube 3 is tightly connected to the lower end of the handle 1 through the external thread at the top, and the tolerance between the outer diameter of the hammer body inner tube 6 and the inner diameter of the outer tube is only 0.05mm (taking into account the thermal expansion and contraction effect), thus forming a closed space inside. The hammer body upper cover 4 is tightly connected to the base cover plate 8 through threads, and the two also fix the spring in a closed space, and the two together with the hammer body outer tube 3 constitute the travel space of the spring. This structure can not only seal the spring to protect it from dust intrusion, but also limit the spring and guide its movement.

[0067] Compared with the existing powder hammer, the powder hammer of the present invention has good motion stability, directionality and quiet performance:

[0068] There is about a half overlapping part between the inner tube 6 and the outer tube of the hammer body (in the initial state), and the overlapping part will exceed 80% when compressed to the lowest point. The inner cylinder 81 in the middle of the inner side of the base cover plate 8 can not only serve as the base of the auxiliary spring 5, but also play a limiting role in the lower part of the outer tube 3 of the hammer body, enhancing stability and directivity; the limiting ring 83 at the bottom of the cover plate contacts and engages with the lower part of the inner tube 6 of the hammer body. When the powder pressing base 9 is pressed into the powder cup during operation, the base cover plate 8 will slide upward, and the limiting effect is achieved through the limiting ring 83, ensuring the stability and directivity of the upward movement of the cover plate, and also ensuring the precise sliding of the outer tube 3 of the hammer body. The upper cover 4 of the hammer body is not only connected to the base cover plate 8, but also its top engages with the snap ring 31 of the outer tube 3 of the hammer body to form a limiting structure, further enhancing the stability during movement.

[0069] Compared with the existing powder hammers, the powder hammer of the present invention has a longer compression - rebound stroke (the full stroke can reach 20 mm), which can meet different requirements:

[0070] Different hydraulic damping rods 2 correspond to different powder pressing forces at different strokes. Under different users or different working conditions, there may be different requirements for the compression - rebound stroke. When the hydraulic damping is increased, with a larger pressing force, a relatively firm and uniform powder pressing can be obtained with only a very small stroke. If the hydraulic damping is reduced, with only a smaller pressing force, combined with a longer stroke or the full stroke, a uniform powder pressing can also be easily obtained. And the longer compression - rebound stroke ensures the working space of the auxiliary spring 5, can ensure that the base cover plate 8 is always pressed down tightly, closely adheres to the upper wall of the powder cup during operation, ensures that the entire powder hammer presses the powder vertically downward against the powder cup, reduces the operation error of the user, and obtains stable finished products.

[0071] The structure of the handle 1 is optimized to improve the holding comfort and reduce the hand fatigue during long - term operation. Without professional skills, novices can easily master the standard powder pressing method, improving the quality of home or commercial coffee making. It is applicable to various coffee brewing methods such as espresso, hand - brewed coffee, and syphon pot, meeting the needs of various scenarios. Made of high - quality aluminum alloy material to ensure the durability and stability of the powder hammer. Precision CNC machining ensures excellent detail craftsmanship and improves the overall aesthetics, suitable as a professional coffee tool or a gift.

[0072] Embodiment 2

[0073] This embodiment provides a working method of a coffee powder hammer as described in Embodiment 1, including:

[0074] The user holds the handle 1 and presses downwards. The hydraulic damping rod 2 connected to the handle 1 transmits the pressure to the powder pressing base 9. At the same time, the outer tube 3 of the hammer body connected to the handle 1 also slides downwards, jointly realizing the movement guidance with the inner tube 6 of the hammer body, ensuring smooth downward pressing, uniform force and correct direction. During this process, the auxiliary spring 5 is compressed, making the base cover plate 8 closely adhere to the powder cup. After powder pressing is completed, the user releases the handle 1, and the hydraulic rod and the auxiliary spring 5 extend, restoring each component to its initial position. The buffer sleeve 7 absorbs excessive vibration throughout the process, improving stability and comfort.

[0075] Through the automatic adjustment of the damping rod 2 and the elastic support of the auxiliary spring 5, the stability and consistency of the powder pressing process are ensured. The whole process does not require complex manual adjustment, reducing the operation difficulty, and is especially suitable for novice users to quickly master the standard powder pressing method.

[0076] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solution of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A coffee tamper, characterized in that: include: A force applying component, an outer cover component and a powder pressing component; The force-applying assembly includes a handle, a hammer body outer tube and a damping rod, the upper ends of the hammer body outer tube and the damping rod are both connected to the handle, and the damping rod is located inside the hammer body outer tube; The outer cover assembly comprises an upper cover on the hammer body and a base cover plate, wherein the upper cover on the hammer body and the base cover plate are sleeved on the outer side of the hammer body outer tube, the upper end of the upper cover on the hammer body is clamped with the hammer body outer tube, and an auxiliary spring is arranged between the outer cover on the hammer body and the base cover plate; The powder pressing assembly comprises a hammer body inner tube and a powder pressing base, wherein the hammer body inner tube is embedded between the damping rod and the hammer body outer tube, and the upper end of the powder pressing base is connected to the hammer body inner tube.

2. The coffee tamper according to claim 1, characterized in that: The center of the handle has a first threaded hole and a second threaded hole, the first threaded hole is located outside the second threaded hole, the upper end of the hammer body outer tube is threadedly connected to the first threaded hole, and the damping rod is threadedly connected to the second threaded hole.

3. The coffee pounder according to claim 1, characterized in that: The upper end of the upper cover of the hammer body has an inwardly bent flange structure, the outer wall of the hammer body outer tube is provided with an outwardly protruding clamping ring, and the flange structure is sleeved on the hammer body outer tube and is located between the clamping ring and the handle.

4. The coffee tamper as claimed in claim 3, characterized in that: The inner sides of the upper cover of the hammer body and the base cover plate are both provided with an inner concave platform, and a receiving cavity is formed between the inner concave platform and the outer tube of the hammer body. The auxiliary spring is installed in the receiving cavity, and one end of the auxiliary spring abuts against the retaining ring, and the other end abuts against the inner concave platform of the base cover plate.

5. The coffee tamper according to claim 1, characterized in that: The outer cover assembly also includes a buffer sleeve, the lower end of the upper cover on the hammer body is threadedly connected to the upper end of the base cover plate, and the buffer sleeve is sleeved on the outer side of the upper cover on the hammer body and the base cover plate.

6. The coffee tamper according to claim 5, characterized in that: The base cover plate includes a bottom plate and an inner cylinder, the inner cylinder is located at the center of the bottom plate, an inner concave platform is provided at the top of the inner side of the inner cylinder, the lower end of the auxiliary spring rests on the inner concave platform of the inner cylinder, a groove is formed between the top surface of the bottom plate and the outer cylinder, and the lower end of the buffer sleeve is embedded in the groove.

7. The coffee tamper according to claim 6, characterized in that: The bottom plate of the base cover plate is provided with a limiting ring, the limiting ring is located on the inner side of the inner tube, and the inner ring of the limiting ring is sleeved on the outer wall of the inner tube of the hammer body.

8. The coffee tamper according to claim 1, characterized in that: The upper end of the inner side of the hammer body outer tube has an inner concave hole, and the upper end of the hammer body inner tube is provided with a convex ring. The convex ring of the hammer body inner tube is installed in the inner concave hole of the hammer body outer tube and can slide axially in the inner concave hole.

9. The coffee tamper according to claim 8, characterized in that: The center of the powder pressing base is provided with a boss, the lower end of the inner tube of the powder hammer is threadedly connected to the boss, the middle of the boss is provided with an inner concave hole, the lower end of the damping rod is provided with a hammer head, and the hammer head can be crimped in the inner concave hole of the boss.

10. A method for operating a coffee tamper as claimed in any one of claims 1 to 9, characterized in that: include: The handle applies downward pressure, and the outer tube of the hammer body slides along the inner tube of the hammer body as the handle is pressed downward. At this time, the auxiliary spring is compressed between the outer tube of the hammer body and the base cover, so that the base cover is closely attached to the inner wall of the coffee powder cup; the handle moves downward while driving the damping rod to move downward, thereby transmitting the pressure to the powder pressing base, which contacts and compacts the coffee powder layer under the push of the damping rod; After the handle releases the pressure, the damping rod and the auxiliary spring work together to reset, driving the force-applying component and the powder-pressing component to return to their initial positions.

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