Coffee powder pressing device with constant force balancing structure
By using a coffee tamper with a balanced force structure, the screw and gear transmission system achieves uniform compaction and distribution of coffee powder, solving the problem of uneven pressure in traditional tampers and improving the consistency of coffee extraction and the functionality of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional coffee tampers struggle to maintain uniform and stable pressure, resulting in inconsistent coffee extraction and a lack of variety in taste.
This coffee tamper features a balanced force structure. A screw drives the sleeve downwards, and a gear transmission system presses down the moving and rotating plates to evenly compact the coffee powder. It also has a powder distribution function, reducing the need for additional tools.
This ensures consistent tamping pressure each time, improves the consistency and stability of coffee extraction, simplifies the operation process, and expands the applicability of the device.
Smart Images

Figure CN224055803U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coffee beverage making equipment, and in particular to a coffee tamper with a balancing force structure. Background Technology
[0002] A coffee tamper (also known as a coffee compactor or coffee tamping device) is a tool used to evenly compact coffee grounds during the coffee brewing process. Tamping is a crucial step in coffee making, as the quality of the tamping directly affects the extraction results and the final taste of the coffee.
[0003] Traditional coffee tampers have some shortcomings. For example, when manually tamping, it is difficult to ensure that the pressure applied each time is uniform and consistent. Excessive pressure may cause the coffee grounds to be over-compacted, making it difficult for water to flow through, resulting in excessive extraction time and a bitter taste in the coffee; insufficient pressure will cause the coffee grounds to be too loose, allowing water to flow through too quickly, resulting in insufficient extraction and a weak coffee flavor.
[0004] In response to the technical problem of ensuring uniform and stable pressure during coffee tamping, this application proposes a coffee tamper with a balancing force structure. Utility Model Content
[0005] The purpose of this invention is to address the difficulty in ensuring uniform and stable pressure during coffee tamping. It proposes a coffee tamper with a balanced force structure. A screw drives a sleeve downwards, pressing down the moving and rotating plates to compact the coffee grounds in the container. Compared to manual tamping, this method avoids uneven pressure caused by human error, ensuring consistent tamping force each time. This helps improve the consistency and stability of coffee extraction. Furthermore, the device can tamp and distribute coffee simultaneously, reducing the need for additional distribution tools and expanding its applicability.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a coffee tamper with a balancing force structure, comprising a main body, a first knob fixedly connected to the top of the main body, the first knob being connected to a moving plate via a pressing assembly, a rotating plate fixedly connected to the bottom of the moving plate, an internal gear ring fixedly connected to the inner wall of the main body, a first gear meshing with the inner side of the internal gear ring, the outer wall of the first gear being rotatably connected to the inner wall of the main body, and the first gear being connected to the rotating plate via a transmission assembly.
[0007] Furthermore, the extrusion assembly includes a screw fixedly connected to the bottom end of the first knob, the outer wall of the screw being rotatably connected to the inner wall of the main body, a sleeve being threadedly connected to the outer wall of the screw, the outer wall of the sleeve being slidably connected to the inner wall of the main body, and the top end of the moving plate being fixedly connected to the bottom end of the sleeve.
[0008] Furthermore, the transmission assembly includes a first rod fixedly connected to the bottom end of the first gear, the outer wall of the first rod being rotatably connected to the inner wall of the main body, a second rod being disposed on the inner wall of the first rod, the outer wall of the second rod being rotatably connected to the inner wall of the movable plate, and a second gear fixedly connected to the bottom end of the second rod.
[0009] Furthermore, a third gear is meshed with the outer wall of the second gear, and a connecting shaft is fixedly connected to the bottom end of the third gear. The outer wall of the connecting shaft is rotatably connected to the inner wall of the moving plate, and the top end of the rotating plate is fixedly connected to the bottom end of the connecting shaft.
[0010] Furthermore, protrusions are fixedly connected to both sides of the inner wall of the first rod, and grooves are provided on both sides of the outer wall of the second rod, with the outer wall of the protrusions slidably connected to the inner wall of the groove.
[0011] Furthermore, a second knob is fixedly connected to the outer wall of the internal gear ring for driving the internal gear ring to rotate.
[0012] Furthermore, connecting blocks are fixedly connected to both the left and right sides of the main body, and slots are formed on the inner walls of the connecting blocks.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, the screw is rotated by turning the first knob, which causes the sleeve on the outer wall of the screw to move the moving plate downward, thereby compacting the coffee powder in the coffee bowl. Compared with manual tamping, this method can avoid uneven pressure caused by human factors, ensure that the tamping force is the same each time, and help improve the consistency and stability of coffee extraction.
[0015] 2. In this utility model, rotating the second knob can drive the bottom rotating plate to rotate, so that the rotating plate can distribute the coffee powder inside the powder bowl. This allows the device to both tamp the powder and distribute it, reducing the need to purchase additional powder distribution tools and increasing the device's applicability. Attached Figure Description
[0016] Figure 1 This is a perspective view of a coffee tamper with a balancing force structure proposed in this utility model;
[0017] Figure 2 This is a cross-sectional view of the main body of a coffee tamper with a balanced force structure proposed in this utility model;
[0018] Figure 3 This is a cross-sectional view of the moving plate of a coffee tamper with a balancing force structure proposed in this utility model;
[0019] Figure 4This is a cross-sectional view of the first rod of a coffee tamper with a balanced force structure proposed in this utility model.
[0020] Legend:
[0021] 1. Main body; 2. First knob; 3. Screw; 4. Sleeve; 5. Moving plate; 6. Rotating plate; 7. Second knob; 8. Internal gear ring; 9. First gear; 10. First rod; 11. Second rod; 12. Protrusion; 13. Groove; 14. Second gear; 15. Third gear; 16. Connecting shaft; 17. Connecting block; 18. Slot. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Reference Figure 1 and Figure 2 An embodiment of this utility model provides a coffee tamper with a balancing force structure, comprising a main body 1, a first knob 2 fixedly connected to the top of the main body 1, a screw 3 fixedly connected to the bottom of the first knob 2, the outer wall of the screw 3 being rotatably connected to the inner wall of the main body 1, a sleeve 4 being threadedly connected to the outer wall of the screw 3, the outer wall of the sleeve 4 being slidably connected to the inner wall of the main body 1, a moving plate 5 fixedly connected to the bottom of the sleeve 4 at its top, a rotating plate 6 fixedly connected to the bottom of the moving plate 5, and connecting blocks 17 fixedly connected to both the left and right sides of the main body 1, with slots 18 formed on the inner walls of the connecting blocks 17.
[0024] Specifically, after the first knob 2 is turned, it will drive the screw 3 to rotate. The screw 3 has a self-locking structure, which allows the sleeve 4 to move downward and remain in that position, continuously squeezing the coffee powder inside the coffee bowl by the moving plate 5 and the rotating plate 6. At the same time, the sleeve 4 is located at the center of the top of the moving plate 5, which can apply uniform pressure to the inside of the coffee bowl.
[0025] Reference Figure 3 and Figure 4An internal gear ring 8 is fixedly connected to the inner wall of the main body 1. A first gear 9 is meshed with the inner side of the internal gear ring 8. The outer wall of the first gear 9 is rotatably connected to the inner wall of the main body 1. A first rod 10 is fixedly connected to the bottom end of the first gear 9. The outer wall of the first rod 10 is rotatably connected to the inner wall of the main body 1. A second rod 11 is provided on the inner wall of the first rod 10. The outer wall of the second rod 11 is rotatably connected to the inner wall of the moving plate 5. A second gear 14 is fixedly connected to the bottom end of the second rod 11. A third gear 15 is meshed with the outer wall of the second gear 14. A connecting shaft 16 is fixedly connected to the bottom end of the third gear 15. The outer wall of the connecting shaft 16 is rotatably connected to the inner wall of the moving plate 5. The top end of the rotating plate 6 is fixedly connected to the bottom end of the connecting shaft 16. Protrusions 12 are fixedly connected to both sides of the inner wall of the first rod 10. Grooves 13 are opened on both sides of the outer wall of the second rod 11. The outer wall of the protrusions 12 is slidably connected to the inner wall of the grooves 13. A second knob 7 is fixedly connected to the outer wall of the internal gear ring 8 for driving the internal gear ring 8 to rotate.
[0026] Specifically, the first rod 10 slides in the groove 13 on the outer wall of the second rod 11 via the protrusion 12, so that when the screw 3 moves the sleeve 4 down and drives the moving plate 5 down, the first rod 10 can slide on the outer wall of the second rod 11, and the first gear 9 can drive the second rod 11 to rotate through the first rod 10, thereby driving the second gear 14 to rotate. The connecting shaft 16 is located at the top center of the rotating plate 6.
[0027] Working principle: In use, place the main body 1 on the coffee bowl, and then rotate the main body 1. When the main body 1 is rotated, the slot 18 on the connecting block 17 engages with the coffee bowl's retaining plate, pressing the main body 1 firmly and connecting it to the coffee bowl. Then rotate the second knob 7, which drives the internal gear ring 8 to rotate. The internal gear ring 8 drives the first gear 9 to rotate, which in turn drives the first rod 10 to rotate. The first rod 10 drives the second rod 11 to rotate, which in turn drives the second gear 14 to rotate. The second gear 14 drives the third gear 15 to rotate, which in turn drives the connecting shaft 16 to rotate, thereby causing the rotating plate 6 at the bottom to rotate and distribute the coffee powder in the coffee bowl. Then rotate the first knob 2, which drives the screw 3 to rotate. The screw 3 drives the sleeve 4 to move downward, which in turn drives the moving plate 5 to move downward, causing the moving plate 5 to drive the rotating plate 6 downward to press down and compact the coffee powder in the coffee bowl.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A coffee press with counterbalancing structure, characterized in that, The utility model provides a kind of extrusion device, including main body (1), the first knob (2) is fixedly connected with the top end of the main body (1), the first knob (2) is connected with moving plate (5) by extrusion component, the bottom end of the moving plate (5) is fixedly connected with rotating plate (6), the inner wall of the main body (1) is fixedly connected with inner tooth ring (8), the inner side of the inner tooth ring (8) is engagedly connected with first gear (9), the outer wall of the first gear (9) is rotatably connected in the inner wall of the main body (1), the first gear (9) is connected with rotating plate (6) by transmission assembly.
2. A coffee tamper with a counterbalanced constant force structure according to claim 1, characterized in that: The extrusion component includes screw rod (3) fixedly connected with the bottom end of the first knob (2), the outer wall of the screw rod (3) is rotatably connected in the inner wall of the main body (1), the outer wall of the screw rod (3) is threadedly connected with sleeve (4), the outer wall of the sleeve (4) is slidably connected in the inner wall of the main body (1), the top end of the moving plate (5) is fixedly connected with the bottom end of the sleeve (4).
3. The coffee press with counterbalanced constant force structure of claim 1, wherein: The transmission assembly includes first rod body (10) fixedly connected with the bottom end of the first gear (9), the outer wall of the first rod body (10) is rotatably connected in the inner wall of the main body (1), the inner wall of the first rod body (10) is provided with second rod body (11), the outer wall of the second rod body (11) is rotatably connected in the inner wall of the moving plate (5), the bottom end of the second rod body (11) is fixedly connected with second gear (14).
4. A coffee tamper with a counterbalanced constant force structure according to claim 3, characterized in that: The outer wall of the second gear (14) is engagedly connected with third gear (15), the bottom end of the third gear (15) is fixedly connected with connecting shaft (16), the outer wall of the connecting shaft (16) is rotatably connected in the inner wall of the moving plate (5), the top end of the rotating plate (6) is fixedly connected with the bottom end of the connecting shaft (16).
5. The coffee press with counterbalanced constant force structure of claim 3, wherein: The inner wall of the first rod body (10) is fixedly connected with lug (12) on both sides, the outer wall of the second rod body (11) is provided with recess (13) on both sides, the outer wall of the lug (12) is slidably connected in the inner wall of the recess (13).
6. The coffee press with counterbalanced constant force structure of claim 1, wherein: The outer wall of the inner tooth ring (8) is fixedly connected with second knob (7), for driving inner tooth ring (8) rotation.
7. The coffee press with counterbalanced constant force structure of claim 1, wherein: The left and right sides of the main body (1) are fixedly connected with connecting block (17), the inner wall of the connecting block (17) is provided with clamping groove (18).