Powder pressing hammer
By designing the pressing mechanism of the tamping hammer and the guide slope control of the limiting component, the problem of uneven coffee powder density was solved, achieving uniform dispersion and compaction of coffee powder, and improving the coffee extraction effect.
Patent Information
- Application Number
- CN202422851154.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing tampers cause uneven coffee powder density when tamping coffee powder, which affects the extraction effect.
A tamping hammer was designed, comprising a hammerhead, a main rod, a pressing mechanism, an impact channel, an impact component, an impact spring, and a reset buffer spring. The uniform distribution and impact compaction process of coffee powder are controlled by limiting components and guide slopes to avoid over-compaction.
It achieves uniform dispersion and compaction of coffee powder, improves coffee extraction, and avoids over-compaction.
Smart Images
Figure CN223759667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coffee equipment technology, and in particular to a coffee tamper. Background Technology
[0002] One of the steps in making espresso is tamping. The purpose of tamping is to compact the coffee grounds in the portafilter, making it easier to create resistance and ensure that the coffee is extracted under high pressure.
[0003] Existing ordinary coffee tampers are generally subjected to direct force from the user's hand, which is usually large and rapid. As a result, the coffee powder cannot be evenly dispersed before being compacted during the tamping process, leading to uneven overall coffee powder density and thus affecting the extraction effect. Utility Model Content
[0004] The technical problem to be solved by this utility model embodiment is to provide a tamping hammer that can achieve the tamping effect of uniformly dispersing and pressing coffee powder.
[0005] To solve the above-mentioned technical problems, this utility model provides a powder pressing hammer, including a hammer head for pressing powder and a pressing mechanism. The hammer head is provided with a main rod for mounting the pressing mechanism, and the main rod is provided with a movable channel.
[0006] The pressing mechanism includes a pressure rod with an impact channel, an impact member disposed in the impact channel, an impact spring for driving the impact member to press down, and a reset buffer spring for supporting the pressure rod. The side wall of the pressure rod has a limiting through hole communicating with the impact channel. The limiting through hole has a movable limiting member for preventing the impact member from moving downward. The movable limiting member travels back and forth between the movable channel and the impact channel through the limiting through hole.
[0007] The movable channel is provided with an impact control part for pushing the movable limiting member into the impact channel, so as to maintain the impact spring in a compressed state.
[0008] During the pressing of the pressure rod, the reset buffer spring is compressed, the movable limit member moves past the impact control part and backs toward the movable channel, and the impact spring drives the impact member to impact downward.
[0009] As an improvement to the above solution, the bottom of the impact control unit is provided with a reset guide ramp, so that after the movable limiting member passes downward over the impact control unit, under the support and rebound of the reset buffer spring, the movable limiting member is driven to move along the reset guide ramp to the side wall of the impact control unit, so that the movable limiting member moves toward the impact channel.
[0010] As an improvement to the above solution, the lower end sidewall of the impact member is provided with an impact reset slope for guiding the compression of the impact spring, and the reset guide slope is provided in correspondence with the limiting through hole;
[0011] Under the support and rebound of the reset buffer spring, the movable limiting member presses against the impact reset ramp, driving the impact member to move upward relative to the pressure rod to compress the impact spring.
[0012] As an improvement to the above solution, the two ends of the movable limiting member are provided with guide arc surfaces, which are respectively used to contact the reset guide slope and the impact reset slope;
[0013] The maximum distance between the two guide arc surfaces is greater than the thickness of the side wall of the pressure rod.
[0014] As an improvement to the above solution, the impact channel is provided with an impact step surface for limiting the downward stroke of the impact member, so that the movable limiting member always corresponds to the impact reset inclined surface.
[0015] The impact member is provided with an impact edge corresponding to the impact step surface, and the impact edge is located above the impact step surface.
[0016] As an improvement to the above solution, a horizontal positioning ring for supporting the top of the powder bowl is also included;
[0017] The horizontal positioning ring is sleeved on the main rod and located above the hammer head, so as to slide relative to the main rod.
[0018] As an improvement to the above solution, the main rod is fitted with an initial buffer sleeve and an initial buffer spring, with the initial buffer spring sandwiched between the initial buffer sleeve and the horizontal positioning ring.
[0019] As an improvement to the above solution, the stiffness coefficient of the initial buffer spring is smaller than that of the reset buffer spring.
[0020] As an improvement to the above solution, the main rod is provided with a lifting stroke hole, and the pressure rod is provided with a limiting rod corresponding to the lifting stroke hole. One end of the limiting rod is inserted into the lifting stroke hole to limit the relative lifting stroke between the main rod and the pressure rod.
[0021] As an improvement to the above solution, a handle for manual pressing is also included. The handle has an adjustment groove for mounting the pressure rod. The impact spring is sandwiched between the handle and the impact member. The top of the pressure rod and the inner wall of the adjustment groove have threaded parts for mutual threaded connection.
[0022] The bottom of the adjustment groove is provided with a spring mounting groove for installing the impact spring, so that the initial compression of the impact spring can be changed by turning the handle.
[0023] Implementing this utility model has the following beneficial effects:
[0024] This utility model embodiment discloses a powder pressing hammer, including a hammer head for pressing powder and a pressing mechanism. The hammer head is provided with a main rod for mounting the pressing mechanism, and the main rod is provided with a movable channel.
[0025] The pressing mechanism includes a pressure rod with an impact channel, an impact member disposed within the impact channel, an impact spring for driving the impact member to press down, and a return buffer spring for supporting the pressure rod. Therefore, when the user presses down the pressure rod, the return buffer spring will be compressed, so that the coffee powder will not be subjected to excessive pressure immediately during the compression deformation of the return buffer spring. Correspondingly, the coffee powder can be evenly dispersed during this process, resulting in more uniform coffee powder.
[0026] Furthermore, the side wall of the pressure rod is provided with a limiting through hole that communicates with the impact channel. The limiting through hole is provided with a movable limiting member to prevent the impact member from moving downward. The movable limiting member passes through the limiting through hole to move back and forth between the movable channel and the impact channel. Therefore, when the movable limiting member is placed into the impact channel, the compression state of the impact spring can be maintained, avoiding premature impact compaction of the coffee powder during the uniform dispersion process.
[0027] Accordingly, the movable channel is provided with an impact control part for pushing the movable limiting member into the impact channel, so as to maintain the impact spring in a compressed state;
[0028] During the pressing of the lever, the reset buffer spring is compressed, the movable limit member moves past the impact control part and backs toward the movable channel, and the impact spring drives the impact member to impact downward so that the coffee powder can be impacted and tamped. At the same time, the impact feedback can be used to give the user a signal to stop applying force to tamp the powder, thereby avoiding the coffee powder being over-compacted. Attached Figure Description
[0029] Figure 1 This is a three-dimensional structural diagram of the powder-pressing hammer of this utility model;
[0030] Figure 2 This is a cross-sectional structural diagram of the powder-pressing hammer of this utility model. Detailed Implementation
[0031] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0032] See Figure 1 , 2 This utility model provides a powder pressing hammer, including a hammer head 1 for pressing powder and a pressing mechanism. The hammer head 1 is provided with a main rod 2 for mounting the pressing mechanism, and the main rod 2 is provided with a movable channel 21.
[0033] The pressing mechanism includes a pressure rod 3 with an impact channel 31, an impact member 4 disposed in the impact channel 31, an impact spring 5 for driving the impact member 4 to press down, and a reset buffer spring 6 for supporting the pressure rod 3. The side wall of the pressure rod 3 has a limiting through hole 35 communicating with the impact channel 31. The limiting through hole 35 has a movable limiting member 32 for preventing the impact member 4 from moving downward. The movable limiting member 32 passes through the limiting through hole to travel back and forth between the movable channel 21 and the impact channel 31.
[0034] The movable channel 21 is provided with an impact control part 22 for pushing the movable limiting member 32 into the impact channel 31, so as to maintain the impact spring 5 in a compressed state.
[0035] During the process of pressing down the pressure rod 3, the reset buffer spring 6 is compressed, the movable limiting member 32 passes over the impact control part 22 and moves towards the movable channel 21, and the impact spring 5 drives the impact member 4 to impact downward.
[0036] Specifically, in order to facilitate repeated use of the impact effect of the impact member 4, the bottom of the impact control unit 22 is provided with a reset guide slope 23, so that after the movable limiting member 32 passes down the impact control unit 22, under the support and rebound of the reset buffer spring 6, the pressure rod 3 rises after losing the downward pressure from the hand, thereby driving the movable limiting member 32 to move along the reset guide slope 23 to the side wall of the impact control unit 22, so that the movable limiting member 32 moves toward the impact channel 31, in preparation to support the impact member 4;
[0037] Accordingly, in order to restore the compression state of the impact spring 5, the lower end sidewall of the impact member 4 is provided with an impact reset slope 41 for guiding the compression of the impact spring 5, and the reset guide slope 23 is provided in correspondence with the limiting through hole 35.
[0038] Under the support and rebound of the reset buffer spring 6, the movable limiting member 32 presses against the impact reset inclined surface 41, driving the impact member 4 to move upward relative to the pressure rod 3, thereby compressing the impact spring 5. This arrangement ensures that after the movable limiting member 32 completes the compression of the impact spring 5, it correspondingly enters a state supporting the impact member 4, thus maintaining the impact spring 5 in a compressed state.
[0039] Correspondingly, the two ends of the movable limiting member 32 are provided with guide arc surfaces, which are respectively used to contact the reset guide slope 23 and the impact reset slope 41, thereby facilitating the movable limiting member 32 to be driven by the reset guide slope 23 and to easily drive the pressure rod 3 to move upward.
[0040] Accordingly, the maximum distance between the two guide arc surfaces is greater than the thickness of the side wall of the pressure rod 3, so as to prevent the movable limiting member 32 from being completely inserted into the limiting through hole 35 and unable to contact the reset guide slope 23 or the impact reset slope 41. Specifically, the impact control part 22 and the impact member 4 are clearance-fitted with the outer and inner side walls of the pressure rod 3 to avoid excessive friction. The sum of the thickness of the impact control part 22 and the thickness of the side wall of the pressure rod 3 is greater than the maximum distance between the two guide arc surfaces. Preferably, the movable limiting member 32 is a ball bearing.
[0041] To enhance the impact of the impact member 4 and ensure its reset function, the impact channel 31 is provided with an impact step surface 33 to limit the downward stroke of the impact member 4, so that the movable limiting member 32 always corresponds to the impact reset inclined surface 41. The impact member 4 is provided with an impact edge 42 corresponding to the impact step surface 33, and the impact edge 42 is located above the impact step surface 33.
[0042] In order for the hammer head 1 to press down horizontally relative to the rim of the powder bowl, the powder pressing hammer also includes a horizontal positioning ring 7 for supporting the top of the powder bowl; the horizontal positioning ring 7 is sleeved on the main rod 2 and located above the hammer head 1, so as to slide relative to the main rod 2.
[0043] To ensure thorough and even distribution of the coffee powder, the main rod 2 is fitted with an initial buffer sleeve 24 and an initial buffer spring 25, with the initial buffer spring 25 sandwiched between the initial buffer sleeve 24 and the horizontal positioning ring 7. Preferably, the stiffness coefficient of the initial buffer spring 25 is less than that of the return buffer spring 6. With this configuration, when the user presses down on the lever 3, the initial buffer spring 25 and the return buffer spring 6 are compressed sequentially, resulting in gradually increasing pressure on the coffee powder over a wide range, thus ensuring more thorough and even distribution of the coffee powder before it is compressed.
[0044] In order to prevent the pressure rod 3 from disengaging from the movable channel 21, the main rod 2 is provided with a lifting stroke hole 26, and the pressure rod 3 is provided with a limiting rod 34 corresponding to the lifting stroke hole 26. One end of the limiting rod 34 is inserted into the lifting stroke hole 26 to limit the relative lifting stroke between the main rod 2 and the pressure rod 3.
[0045] The powder pressing hammer also includes a handle 8 for manual pressing operation. The handle 8 has an adjustment groove 81 for installing the pressure rod 3. The impact spring 5 is sandwiched between the handle 8 and the impact member 4. The top of the pressure rod 3 and the inner wall of the adjustment groove 81 are provided with threaded parts for mutual threaded connection.
[0046] The bottom of the adjustment groove 81 is provided with a spring mounting groove 82 for mounting the impact spring 5, so that the initial compression of the impact spring 5 can be changed by turning the handle part 8, so as to avoid the initial elastic force of the impact spring 5 being too large and affecting the smoothness of the reset of the impact member 4.
[0047] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A rammer compactor characterized by comprising: The hammer head is provided with a main rod for mounting the pressing mechanism, and the main rod is provided with a movable channel; The pressing mechanism comprises a pressing rod provided with an impact channel, an impact piece arranged in the impact channel, an impact spring for driving the impact piece to press down, and a reset buffer spring for supporting the pressing rod, a side wall of the pressing rod is provided with a limiting through hole in communication with the impact channel, and the limiting through hole is provided with a movable limiting piece for blocking the downward movement of the impact piece, the movable limiting piece reciprocates in the movable channel and the impact channel through the limiting through hole; The movable channel is provided with an impact control part for pushing the movable limiting piece into the impact channel, so as to maintain the impact spring in a compressed state; During the pressing of the pressing rod, the reset buffer spring is compressed, the movable limiting piece passes the impact control part to retreat to the movable channel, and the impact spring drives the impact piece to impact downward.
2. The powder rammer as claimed in claim 1, wherein The bottom of the impact control part is provided with a reset guide slope, so that after the movable limiting piece passes the impact control part downward, the movable limiting piece is driven to move along the reset guide slope to the side wall of the impact control part under the support and rebound of the reset buffer spring, so that the movable limiting piece moves towards the impact channel.
3. The powder rammer as claimed in claim 2, wherein The lower end side wall of the impact piece is provided with an impact reset slope for guiding the compression of the impact spring, and the reset guide slope is correspondingly arranged with the limiting through hole; Under the support and rebound of the reset buffer spring, the movable limiting piece is pressed against the impact reset slope, and the impact piece is driven to move upward relative to the pressing rod to compress the impact spring.
4. The powder rammer as claimed in claim 3, wherein Both ends of the movable limiting piece are provided with guide arc surfaces for contacting the reset guide slope and the impact reset slope, respectively; The maximum distance between the two guide arc surfaces is greater than the thickness of the side wall of the pressing rod.
5. The powder rammer as claimed in claim 3, wherein The impact channel is provided with an impact step surface for limiting the downward stroke of the impact piece, so that the movable limiting piece always corresponds to the impact reset slope; The impact piece is provided with an impact edge corresponding to the impact step surface, and the impact edge is located above the impact step surface.
6. The powder rammer as claimed in claim 1, wherein A horizontal positioning ring is further provided for supporting the top end of the powder bowl; The horizontal positioning ring is sleeved on the main rod and located above the hammer head to slide relative to the main rod.
7. The powder rammer as claimed in claim 6, wherein The main rod is sleeved with an initial buffer sleeve and an initial buffer spring, and the initial buffer spring is clamped between the initial buffer sleeve and the horizontal positioning ring.
8. The powder rammer as claimed in claim 7, wherein The stiffness coefficient of the initial buffer spring is smaller than that of the reset buffer spring.
9. The powder rammer as claimed in claim 1, wherein The main rod is provided with a lifting stroke hole, and the pressing rod is provided with a limiting rod corresponding to the lifting stroke hole, one end of the limiting rod is arranged in the lifting stroke hole to limit the relative lifting stroke between the main rod and the pressing rod.
10. The powder rammer as claimed in claim 9, wherein A handle part is further provided for manual pressing operation, the handle part is provided with an adjusting groove for mounting the pressing rod, the impact spring is clamped between the handle part and the impact piece, and the top of the pressing rod and the inner wall of the adjusting groove are provided with threaded parts for mutual threaded connection. The bottom of the adjusting groove is provided with a spring mounting groove for mounting the impact spring, so as to change the initial compression amount of the impact spring by rotating the handle part.