Coffee impact powder hammer

Abstract

The utility model relates to the technical field of coffee making tools, in particular to a coffee impact powder hammer which comprises a shell assembly, the shell assembly comprises a main sleeve part and an outer sleeve part which can do relative linear motion, and a guide correction structure is arranged on the main sleeve part and used for being in sliding contact with an impact part when the main sleeve part moves; radial correction force is generated through contact type sliding fit, and the impact part is guided to enter a vertical state; the impact piece is movably arranged in the main sleeve piece, the impact piece is provided with a correction matching part, the correction matching part and the guide correction structure form a radial interference fit relation in the sliding process, and the impact piece is limited in a vertical state; the impact part is located at the bottom of the coffee impact powder hammer, and the bottom end of the impact piece extends into the impact part; the mechanical elastic reset assembly is used for storing energy when the main sleeve piece moves and releasing the stored energy when the impact piece is limited in the vertical state, and the impact piece is pushed to vertically impact the impact part. Therefore, the number of parts is reduced, the structure is simple and reasonable, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of coffee making tools, specifically to a coffee grounds hammer. Background Technology

[0002] A coffee tamping hammer is an important tool used to compact ground coffee powder, widely used in the preparation of espresso. Its tamping effect directly impacts the subsequent extraction efficiency and flavor profile of the coffee. When using it, the operator typically applies manual force to press the hammer head vertically against the coffee powder surface to complete the tamping process.

[0003] In existing technologies, some impact-type coffee pounders employ multi-stage linkage structures or elastic drive mechanisms to achieve a compaction method similar to impact hammering. These structures typically rely on multiple auxiliary limiting elements, such as separate locking pins and guide sliders, to release and guide the impacting component. However, such structures lead to an increased number of parts, cumbersome assembly processes, and high production costs. Therefore, it is necessary to research and improve the structure of these coffee pounders; to address the aforementioned problems, the concept of this application is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a coffee impact hammer to solve at least one of the aforementioned defects in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coffee impact hammer, comprising: a housing assembly including a main assembly and an outer assembly capable of linear motion relative to each other; the main assembly having a guiding and correcting structure for sliding contact with the impacting component during movement of the main assembly, generating a radial correcting force through a contact-type sliding fit to guide the impacting component into a vertical state; an impacting component movably disposed inside the main assembly, the impacting component having a correcting fit portion; the guiding and correcting structure on the main assembly forming a sliding fit with the correcting fit portion during movement, generating a radial interference force during the fit to guide the impacting component to a vertical state; an impact portion located at the bottom of the coffee impact hammer, the bottom end of the impacting component extending into a guide cavity within the impact portion; and a mechanical elastic reset assembly for storing energy during movement of the main assembly, and releasing the stored energy when the impacting component is restricted to a vertical state, pushing the impacting component to vertically impact the impact portion.

[0006] A further improvement of this utility model is that the guiding and correcting structure includes an inclined guiding part and a vertical channel communicating with the inclined guiding part. The inclined guiding part is used to slide in contact with the impact member to generate a radial correcting force, and the vertical channel is used to form a radial interference fit with the correcting mating part.

[0007] In a further improvement of this invention, the inclined guide portion is shaped like a frustum conical.

[0008] In a further improvement of this utility model, the correction fitting part is an annular protrusion, and the outer diameter of the annular protrusion and the inner diameter of the vertical channel of the guide correction structure form a radial interference fit.

[0009] In a further improvement of this utility model, the top of the annular protrusion is an arc surface, and the arc surface slides in contact with the conical inner wall of the inclined guide portion.

[0010] A further improvement of this utility model is that the mechanical elastic reset assembly includes a first elastic element and a second elastic element. The first elastic element is disposed inside the outer sleeve, and the top of the first elastic element abuts against the bottom of the main sleeve. The second elastic element is disposed inside the main sleeve and contacts the top of the impact element.

[0011] A further improvement of this utility model is that the top of the impact part is provided with an impact groove, and the axis of the impact groove coincides with the axis of the impact member;

[0012] The impact part is detachably connected to the outer kit via a guide cavity.

[0013] A further improvement of this utility model is that the bottom of the impact member is provided with a sliding part, the sliding part is in the shape of an inverted frustum cone, and a clearance gap is formed between the sliding part and the top edge of the impact groove.

[0014] A further improvement of this utility model is that the end of the vertical channel away from the inclined guide surface is provided with a horizontal platform structure;

[0015] The top of the impact member is provided with a slanted hanging platform. The upper and lower surfaces of the slanted hanging platform are both inclined. Its upper surface contacts the second elastic member, and its lower surface contacts the platform structure.

[0016] The elastic force of the second elastic element is perpendicular to the platform structure, and under the action of the elastic force, the lower surface and the platform structure form a planar contact.

[0017] A further improvement of this utility model is that a concave area is provided below the diaphragm mounting platform to limit the buffer stroke when the main component moves downward, and to gradually correct the impact member from an inclined state to a vertical state.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This coffee impact hammer includes: a housing assembly comprising a main assembly and an outer assembly capable of linear motion; the main assembly has a guiding and correcting structure for sliding contact with the impact member during movement of the main assembly, generating a radial correcting force through a contact-type sliding fit to guide the impact member into a vertical state; an impact member movably disposed inside the main assembly, the impact member having a correcting fit portion; the guiding and correcting structure on the main assembly forms a sliding fit with the correcting fit portion during movement, generating a radial interference force during the fit to guide the impact member to a vertical state; an impact portion located at the bottom of the coffee impact hammer, the bottom end of the impact member extending into a guide cavity within the impact portion; and a mechanical elastic reset assembly for storing energy during movement of the main assembly and releasing the stored energy when the impact member is confined to a vertical state, propelling the impact member to vertically impact the impact portion. However, compared to traditional designs, this design reduces the number of parts, thus featuring a simple and reasonable structure, compact design, and ease of use, meeting the needs of users.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the initial state structure of this utility model;

[0022] Figure 2 This utility model Figure 1 A magnified structural diagram of part A;

[0023] Figure 3 This is a schematic diagram of the overall structure of the impact component of this utility model;

[0024] Figure 4 This utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0025] Figure 5 This is a schematic diagram of the reference structure for correcting the impact component of this utility model to a vertical state;

[0026] Figure 6 This is a schematic diagram of the impactor of the present invention under impact conditions.

[0027] Figure 7 This is an exploded structural diagram of the present invention.

[0028] Reference numerals: 1. Housing assembly; 11. Main assembly; 12. Outer assembly; 13. Guide and correction structure; 131. Inclined guide; 132. Vertical channel; 14. Tabletop structure; 2. Impact component; 21. Surface mounting platform; 22. Correction mating part; 23. Concave area; 24. Sliding part; 3. Impact part; 31. Guide cavity; 32. Impact groove; 33. Clearance gap; 4. Mechanical elastic reset assembly; 41. First elastic component; 42. Second elastic component; 5. Handle component. Detailed Implementation

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Detachable installation methods are varied, such as through plug-in and snap-fit ​​connections, or through bolt connections, etc.

[0030] The present invention will now be described in more detail with reference to specific embodiments. However, the implementation of the present invention is not limited thereto. The embodiments are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. For process parameters or conditions not specifically specified, conventional techniques can be referred to.

[0031] Please see Figures 1-7 As shown, the technical solution adopted in this specific embodiment is: a coffee impact hammer, comprising: a housing assembly 1, including a main assembly 11 and an outer assembly 12 capable of linear motion; the main assembly 11 is provided with a guide correction structure 13, which is used to slide into contact with the impact member 2 when the main assembly 11 moves, and generates a radial correction force through contact sliding engagement to guide the impact member 2 into a vertical state; the impact member 2 is movably disposed inside the main assembly 11, and the impact member 2 is provided with a correction engagement part 22; the guide correction structure 13 on the main assembly 11 forms a sliding engagement with the correction engagement part 22 during movement, and generates a radial interference force during engagement to guide the impact member 2 to correct to a vertical state; an impact part 3 is located at the bottom of the coffee impact hammer, and the bottom end of the impact member 2 extends into the guide cavity 31 inside the impact part 3; a mechanical elastic reset assembly 4 is used to store energy when the main assembly 11 moves, and release the stored energy when the impact member 2 is restricted to a vertical state, pushing the impact member 2 to vertically impact the impact part 3.

[0032] In this embodiment, the outer casing assembly 1 of the coffee impact hammer consists of a main assembly 11 and an outer assembly 12 connected in a fitted manner, allowing for relative linear movement between them along the axial direction. The impact member 2 is disposed inside the main assembly 11 and can move up and down along the axis of the assembly during use. To ensure that the impact member 2 remains vertical before impact, a guide and correction structure 13 is provided in the main assembly 11. When the main assembly 11 is compressed downward, the guide and correction structure 13 forms a sliding contact with the correction engagement part 22 of the impact member 2, generating a radial correction force, thereby gradually adjusting the impact member 2 to the vertical axis.

[0033] When the impactor 2 enters a vertical state and approaches the bottom impact part 3, the energy stored in the mechanical elastic reset component 4 is released, driving the impactor 2 to strike the impact part 3 below in a vertical direction, thereby transmitting the impact force to the coffee powder and completing the compaction.

[0034] This structural design ensures the vertical accuracy of the impact component 2 during the impact process, effectively preventing uneven force on the coffee powder caused by misalignment and compaction. At the same time, the energy storage and release process of the elastic mechanism makes the impact more powerful and the operation smoother, improving the tamping efficiency.

[0035] It should be noted that the main assembly 11 and the outer assembly 12 can use a threaded guide fit instead of a sliding sleeve fit to improve structural stability. The impact member 2 can also be designed as a cross-shaped or decagonal prism to further prevent it from spinning or tilting.

[0036] The guiding and correcting structure 13 includes an inclined guiding part 131 and a vertical channel 132 communicating with the inclined guiding part 131. The inclined guiding part 131 is used to slide in contact with the impact member 2 to generate a radial correcting force. The vertical channel 132 is used to form a radial interference fit with the correcting fitting part 22. The inclined guiding part 131 is truncated cone-shaped, and its cone angle is a preset angle.

[0037] In this embodiment, the guiding and correcting structure 13 includes a frustum-shaped inclined guiding portion 131, which gradually tapers from bottom to top, i.e., wider at the bottom and narrower at the top. The upper end of the inclined guiding portion 131 is connected to a vertical channel 132. The top of the impact member 2 is provided with an annular protrusion. During the downward pressing process, the annular protrusion first contacts the inclined guiding portion 131 and slides upward along it to the entrance of the vertical channel 132. As the impact member 2 continues to move downward, the annular protrusion is gradually radially corrected and guided into the vertical channel 132. After entering the vertical channel 132, a radial interference fit is formed between the annular protrusion and the vertical channel 132, thereby effectively restricting the posture of the impact member 2 and keeping it in a vertical state for downward impact.

[0038] The conical inclined guide 131 can automatically adjust the posture of the impactor 2 during the compression process, so that the impactor 2 is ultimately in a strictly vertical state. This structure ensures accurate impact direction and improves the uniformity and repeatability of the compaction effect.

[0039] It should be noted that the inclined guide 131 can adopt a multi-segment transition angle structure or a spherical transition structure instead of a conical shape to obtain a smoother sliding path. The vertical channel 132 can be designed as a sleeve to accommodate various shapes of impact members 2 within different diameter ranges.

[0040] The correction fitting part 22 is an annular protrusion, and the outer diameter of the annular protrusion forms a radial interference fit with the inner diameter of the vertical channel 132 of the guide correction structure 13; the top of the annular protrusion is an arc surface, and the arc surface slides in contact with the conical inner wall of the inclined guide part 131.

[0041] The alignment mating part 22 is designed as an outwardly convex annular protrusion with a smooth arc surface at its top. During operation, the annular protrusion contacts the conical guide surface, generating sliding friction and gradually entering the vertical channel 132. The arc-shaped top structure makes the contact process smoother, reduces wear, and improves the mating life.

[0042] The interference fit between the annular protrusion and the vertical channel 132 can effectively stabilize the posture of the impact component 2; the design of the arc transition structure reduces the operating resistance, making the feel better during the pressing process and avoiding jamming.

[0043] It should be noted that the annular protrusion can be replaced with a three-point symmetrical protrusion structure, which can still produce a stable radial restraint effect; the arc surface can be changed to an inverted slope or a small conical surface to adapt to guide surfaces with different tilt angles.

[0044] The mechanical elastic reset assembly 4 includes a first elastic element 41 and a second elastic element 42. The first elastic element 41 is disposed inside the outer sleeve 12, and its top abuts against the bottom of the main sleeve 11. The second elastic element 42 is disposed inside the main sleeve 11 and contacts the top of the impact member 2. The elastic coefficient of the first elastic element 41 is greater than that of the second elastic element 42.

[0045] In this embodiment, the first elastic element 41 is disposed between the bottom of the outer shell and the main assembly 11, mainly for storing a large elastic potential energy; the second elastic element 42 is disposed on the top of the impact element 2, and its function is to provide auxiliary thrust during the process of the impact element 2 rebounding to the initial position, so as to help the impact element 2 to reset smoothly and maintain its initial pre-compression state. Since the elastic coefficient of the first elastic element 41 is large, its energy storage capacity is stronger, and it can generate a significant impact force when released.

[0046] By separately setting the first elastic element 41 and the second elastic element 42, elastic control of the two key stages of the machine is achieved: the first elastic element 41 is mainly responsible for storing energy and releasing impact force during the pressing process, while the second elastic element 42 is used to assist the impact element 2 in smoothly resetting after the impact. This clearly defined dual elastic element configuration effectively solves the problem of the traditional single spring structure being unable to balance energy storage and buffering, which not only improves the durability of the whole machine, but also significantly improves the impact consistency and repeatability accuracy during the compaction process.

[0047] It should be noted that the two elastic elements can be replaced with a single composite spring device, or a magnetic elastic composite structure can be adopted to provide a more flexible mechanical response.

[0048] The top of the impact part 3 is provided with an impact groove 32, and the axis of the impact groove 32 coincides with the axis of the impact member 2; the bottom of the impact member 2 is provided with a sliding part 24, which is inverted truncated cone shape, and forms a clearance gap 33 between it and the top edge of the impact groove 32; the bottom of the impact groove 32 is provided with an impact sound-emitting surface, which is a plane or a slightly convex arc surface.

[0049] In this embodiment, the top of the impact part 3 is provided with an impact groove 32, which is used to receive vertical impacts from the bottom of the impact member 2. To ensure the stability and consistency of the impact direction, the axis of the impact groove 32 is strictly coincident with the axis of the impact member 2, thereby avoiding skewed or eccentric contact during the impact process.

[0050] The impact part 3 is detachably connected to the outer sleeve 12 via the guide cavity 31. In this embodiment, specifically, the bottom of the outer sleeve 12 is provided with an annular external thread hole, and the inner circumference of the impact part 3 is provided with a corresponding annular external thread structure. The two are connected by screwing to form a firm axial fixing structure. To prevent the threads from loosening during impact, preferably, an anti-loosening washer is provided at the threaded engagement or thread sealant is applied to enhance the connection stability. In addition, the bottom edge of the outer sleeve 12 is provided with a limiting ring platform, which fits tightly against the upper edge surface of the impact part 3 to further prevent rotational loosening and ensure consistent positioning. Furthermore, the impact groove 32 is located at the inner bottom of the annular internal thread hole.

[0051] This detachable connection structure allows users to quickly replace the impact component 3 according to wear and tear, improving product maintainability and lifespan. Compared to a completely non-detachable design, it effectively reduces maintenance costs and also supports flexible replacement of the impact component 3 with different shapes or materials.

[0052] It should be noted that in other optional embodiments, the guide cavity 31 can also be implemented using a snap-fit ​​plug-in structure or a magnetic connection method. For example, the upper end of the impact part 3 is provided with an elastic hook, which is inserted into the positioning hole with a matching groove at the bottom of the outer kit 12, and quick assembly and disassembly are completed through the elastic snap-fit ​​method; or an annular magnet is provided between the impact part 3 and the outer kit 12, and the positioning connection is achieved through magnetic attraction, which facilitates tool replacement without disassembly.

[0053] The bottom of the impact member 2 is provided with a sliding part 24, which has an inverted frustum-shaped structure and gradually tapers at the top to form a guide surface. The conical geometry of the sliding part 24 not only helps to guide the alignment of the impact member 2 with the impact groove 32, but also avoids rigid contact between the impact member 2 and the edge of the groove during impact through the clearance 33 set between the outer edge and the top edge of the groove, thereby reducing structural wear and noise and improving the overall service life of the device.

[0054] To enhance tactile and auditory feedback during user operation, the bottom of the impact groove 32 is also equipped with an impact sound-emitting surface, which is designed as a flat or slightly convex arc surface. When the impact member 2 is pressed down at high speed in a vertical state and collides with the sound-emitting surface, it can produce a crisp and stable impact sound, which helps the operator judge whether the compaction action has been completed and enhances the controllability and accuracy of actual operation.

[0055] The axial concentric fit between the inverted frustum-shaped sliding part 24 and the impact groove 32 achieves good sliding guidance and buffering distance effects, avoiding mechanical interference; the design of the clearance 33 reduces direct wear between components and improves the durability of the product; while the sound-generating structure at the bottom provides clear sound prompts without relying on electronic feedback, improving user experience and usage accuracy.

[0056] It should be noted that in practical applications, the sliding part 24 can also adopt a multi-stage stepped conical or spherical structure, as long as it can achieve the guiding and distance avoidance functions during the impact. The impact sound-emitting surface can be made of stainless steel or high-hardness alloy material to adjust the impact audio characteristics. If a quiet operating environment is required, the sound-emitting surface can also be designed as a buffer rubber structure or embedded with a sound-absorbing coating to achieve a silent compaction improvement solution.

[0057] The vertical channel 132 is provided with a horizontal platform structure 14 at one end away from the inclined guide surface; the top of the impact member 2 is provided with a slanted hanging platform 21, the upper and lower surfaces of the slanted hanging platform 21 are both inclined, the upper surface is in contact with the second elastic member 42, and the lower surface is in contact with the platform structure 14; the elastic force direction of the second elastic member 42 is perpendicular to the platform structure 14, and under the action of the elastic force, the lower surface and the platform structure 14 form a planar contact.

[0058] In the initial state, the second elastic member 42 is in a natural state, with one end pressing against the upper surface of the slant-faced hanging platform 21. Through the vertical elastic force generated by it, the slant-faced hanging platform 21 of the impact member 2 is pushed downward against the table structure 14, forming a planar contact between the lower surface of the slant-faced hanging platform 21 and the table structure 14.

[0059] The upper and lower surfaces of the slanted mounting platform 21 are inclined. When the upper end is pressed by the vertical elastic force of the second elastic element 42, the lower end can form a stable contact fit with the horizontal platform surface. Through the contact relationship between the inclined surface and the platform surface, not only is reliable axial support force provided, but the posture of the impact member 2 can also be passively corrected during its movement, guiding the impact member 2 to maintain a vertical movement path, thereby avoiding a reduction in impact accuracy due to deviation.

[0060] When the impact member 2 moves upward, that is, during the power storage phase, the second elastic member 42 is deformed by pressure; and when the impact is released, the restoring force of the elastic member works in conjunction with the mechanical elastic restoring component 4 to make the impact member 2 strike the impact part 3 vertically downward.

[0061] However, the planar contact between the diaphragm mounting plate 21 and the table structure 14, which provides stable support and precise correction, enhances the stability of the impactor 2 in its non-working state and also serves as a limiting and guiding function. Through the double-inclined surface buffer design, the double-inclined surface design of the diaphragm mounting plate 21 effectively guides the direction of the elastic force of the second elastic element 42, reducing localized stress concentration and improving elastic lifespan. Furthermore, it enhances vertical impact accuracy; the central symmetry and reasonable stress distribution of the structure prevent the impactor 2 from tilting during release, improving the vertical pressure and uniformity when tamping coffee powder.

[0062] Preferably, the upper and lower inclined surfaces of the swashplate 21 are set at an angle of 85°, so that the impact member 2 forms a slight tilt of 5° in the initial installation state; with this structure, the sliding part 24 at the bottom of the impact member 2 can form a clearance gap 33 of about 0.5mm relative to the top edge of the impact groove 32, so as to provide sufficient movement margin during vertical alignment and avoid jamming due to tolerance accumulation.

[0063] The lower part of the slanted mounting platform has a concave area to limit the buffer stroke when the main assembly moves downward and gradually correct the impact member from an inclined state to a vertical state.

[0064] In this embodiment, the slant-faced mounting platform 21 is disposed inside the outer shell assembly 1 to support and restrict the axial posture of the main component 11 during descent. A concave region 23 is provided below the slant-faced mounting platform 21. This concave region 23 is formed in the sliding path between the guide correction structure 13 of the main component 11 and the correction mating part 22 of the impact member 2. Specifically, during descent, the guide correction structure 13 of the main component 11 gradually contacts and engages with the correction mating part 22 on the impact member 2 along the axial direction.

[0065] The concave region 23 is preferably a downwardly recessed arc-shaped or gradually curved surface structure with a depth of approximately 2 mm, serving to provide a buffer stroke during the initial downward movement of the main assembly 11. During this buffer stroke, due to the presence of the concave region 23, the engagement process between the guide correction structure 13 and the correction mating part 22 transitions from non-contact to slight contact, and then gradually forms a radial interference fit. As the main assembly 11 continues to press down, the mating pressure gradually increases along the concave contour, ultimately stabilizing and guiding the impact member 2 from its initial slightly tilted state to a vertical state at the end of the sliding path.

[0066] Specifically, since the impact component 2 does not fully fit with the main assembly 11 during initial assembly or in a stationary state, its posture may slightly deviate from the central axis due to the fit gap or the guide structure not yet being activated, exhibiting a slight tilt within approximately 5°. During the downward movement of the main assembly 11, the concave region 23 serves as a progressive interference section of the guide path, allowing the guide correction structure 13 of the main assembly 11 to gradually act on the correction fit part 22 of the impact component 2, thereby maintaining the continuity of the downward movement while achieving stable adjustment of the impact component 2's posture. After the main assembly 11 passes through the concave region 23 and enters the straight section slide, the posture of the impact component 2 has been corrected to a vertical direction close to the central axis, thus meeting the conditions for stable impact.

[0067] This embodiment sets a concave area 23 located below the diaphragm mounting platform 21, so that the posture of the impactor 2 can be gradually guided to a vertical state within the buffer stroke of the downward path, avoiding jamming caused by abrupt interference or instantaneous engagement, and significantly improving the stability and consistency of the vertical impact of the impactor 2, which is especially suitable for scenarios with high requirements for the compaction accuracy of coffee powder.

[0068] The coffee pounder also includes a handle 5, which is detachably connected to the upper end of the main assembly 11; it provides an operating component for applying external force. In this embodiment, the handle 5 is located at the upper end of the main assembly 11 and is securely connected to the outer shell via a screw, snap, or interference fit. Preferably, the handle 5 is a hollow or solid cylindrical structure with an internal threaded hole at its bottom, which engages with the external thread at the upper end of the main assembly 11 for fixation. To improve grip comfort, the outer surface of the handle 5 is covered with a non-slip rubber or silicone sleeve, and its ergonomic curved contour design can be optimized to suit the grip habits of different users.

[0069] The handle 5 enhances the overall grip stability and operational comfort of the device. Users can apply even downward pressure through the handle 5 for a more stable pressing action. Compared to a handleless design, this significantly reduces discomfort caused by direct contact between the palm and the outer casing, preventing fatigue during prolonged or repeated use, and further improving pressing efficiency and user experience.

[0070] Furthermore, this coffee pounder also includes a limiting structure, comprising a first limiting part and a second limiting part. The first limiting part is located at the bottom outer side of the main assembly 11, and the second limiting part is located at the top inner side of the outer assembly 12. The first limiting part of the main assembly 11 and the second limiting part of the outer assembly 12 engage with each other. When the main assembly 11 and the outer assembly 12 move relative to each other, the first limiting part and the second limiting part, through an elastic engagement or physical engagement structure, prevent the main assembly 11 from continuing to move upward, thereby achieving the limiting function of the inner and outer assemblies 12. This structure avoids excessive movement or misalignment of the main assembly 11 during the use of the coffee pounder, effectively controlling the movement path of the impactor 2. This also prevents the main assembly 11 from being dislodged from the top of the sleeve by the elastic force of the mechanical elastic reset component 4.

[0071] When using the coffee tamping hammer provided in this embodiment, the user first pours coffee powder into the portafilter and places the coffee tamping hammer vertically on the powder surface. Next, the user presses down on the main assembly 11 using the handle. At this time, the first elastic element 41 is compressed and stores energy, and the tamping element 2 is forced into the main assembly 11 as it moves. The annular protrusion on the top of the tamping element 2 contacts the inclined surface of the guide correction structure 13. During the sliding process, through gradual radial correction, the posture of the tamping element 2 is gradually adjusted to a vertical direction and finally enters the vertical channel 132. When the tamping element 2 reaches the predetermined position, the first elastic element 41 releases the stored elastic potential energy, and the tamping element 2 gains downward acceleration, impacting vertically along the bottom of the impact groove 32. At this time, the sound-emitting surface at the bottom of the impact groove 32 contacts the tamping element 2 and produces a crisp sound, completing one tamping action. Subsequently, the second elastic element 42 provides auxiliary thrust to help the tamping element 2 rebound smoothly and return to its initial position. The main assembly 11 and the impact component 2 return to their initial positions under the action of the two elastic components, ready for the next use.

[0072] In summary, this coffee impact hammer has the characteristics of simple and reasonable structure and convenient use, which can meet the needs of users.

[0073] The foregoing, in conjunction with the embodiments and accompanying drawings, has clearly and completely described the concept, specific structure, and technical effects of this utility model, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions.

[0074] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A coffee impact hammer, characterized in that, include: The housing assembly includes a main assembly and an outer assembly that can move relatively linearly. The main assembly is provided with a guide and correction structure, which is used to slide into contact with the impact member when the main assembly moves, and to generate a radial correction force through contact sliding engagement to guide the impact member into a vertical state. An impact component is movably disposed inside the main assembly, and the impact component is provided with a correction fitting part; the guide correction structure on the main assembly forms a sliding fit with the correction fitting part during the movement, and generates a radial interference force during the fit to guide the impact component to correct to a vertical state; The impact section is located at the bottom of the coffee impact hammer, and the bottom end of the impact member extends into the guide cavity inside the impact section; A mechanically elastic reset assembly is used to store energy when the main assembly moves and release the stored energy when the impact member is confined to a vertical position, thereby propelling the impact member to strike the impact part vertically.

2. The coffee impact hammer according to claim 1, characterized in that, The guiding and correcting structure includes an inclined guiding part and a vertical channel communicating with the inclined guiding part. The inclined guiding part is used to slide in contact with the impact member to generate a radial correcting force, and the vertical channel is used to form a radial interference fit with the correcting mating part.

3. The coffee impact hammer according to claim 2, characterized in that, The inclined guide part is truncated cone-shaped.

4. The coffee impact hammer according to claim 2, characterized in that, The correction fitting part is an annular protrusion, and the outer diameter of the annular protrusion forms a radial interference fit with the inner diameter of the vertical channel of the guide correction structure.

5. The coffee impact hammer according to claim 4, characterized in that, The top of the annular protrusion is an arc surface, and the arc surface slides in contact with the conical inner wall of the inclined guide.

6. The coffee impact hammer according to claim 1, characterized in that, The mechanical elastic reset assembly includes a first elastic element and a second elastic element. The first elastic element is disposed inside the outer sleeve, and the top of the first elastic element abuts against the bottom of the main sleeve. The second elastic element is disposed inside the main sleeve and contacts the top of the impact element.

7. The coffee impact hammer according to claim 1, characterized in that, The top of the impact part is provided with an impact groove, and the axis of the impact groove coincides with the axis of the impact member; The impact part is detachably connected to the outer kit via a guide cavity.

8. The coffee impact hammer according to claim 2, characterized in that, The bottom of the impact member is provided with a sliding part, which is in the shape of an inverted frustum cone, and a clearance gap is formed between the sliding part and the top edge of the impact groove.

9. The coffee impact hammer according to claim 2 or 8, characterized in that, The vertical channel is provided with a horizontal platform structure at the end away from the inclined guide surface; The top of the impact member is provided with a slanted hanging platform. The upper and lower surfaces of the slanted hanging platform are both inclined. Its upper surface contacts the second elastic member, and its lower surface contacts the platform structure. The elastic force of the second elastic element is perpendicular to the platform structure, and under the action of the elastic force, the lower surface and the platform structure form a planar contact.

10. The coffee impact hammer according to claim 9, characterized in that, The lower part of the slanted mounting platform has a concave area, which is used to limit the buffer stroke when the main component moves downward, and gradually correct the impact component from the inclined state to the vertical state.

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