Coffee powder pressing device

Abstract

The invention relates to the technical field of coffee equipment, and discloses a coffee powder pressing device which comprises a mounting frame, a powder pressing hammer and a driving mechanism, the mounting frame is provided with a powder pressing channel extending vertically, the inner wall face of the powder pressing channel is provided with a first guide groove, the first guide groove extends downwards in an inclined mode, and the powder pressing hammer comprises a connecting body and a powder pressing head. The connecting body is fixedly connected with the driving mechanism, the powder pressing head is arranged in the powder pressing channel, the powder pressing head is rotationally connected with the connecting body, the powder pressing head can rotate around the axis of the powder pressing channel, a guide column is arranged on the side wall of the powder pressing head and inserted into the first guide groove, and the driving mechanism is used for driving the connecting body to move in the vertical direction. The first guide groove is used for guiding the powder pressing head to rotate, and according to the coffee powder pressing device, powder pressing is achieved through the powder pressing head in a rotary downward pressing mode, and coffee powder can be pressed into compact powder cakes.

Description

Technical Field

[0001] This invention belongs to the field of coffee equipment, and more specifically, relates to a coffee tamping device. Background Technology

[0002] Coffee tamping refers to the process of compacting coffee powder in a coffee bowl using a tamper to form a dense and uniform cake, preparing it for coffee extraction. Currently, most existing coffee tamping devices use a purely vertical downward pressing method to apply pressure to the coffee powder. In this method, the coffee powder particles only stack along the direction of force, making it difficult for irregular particles to move relative to each other and interlock, resulting in gaps easily forming inside the cake and an insufficiently compact internal structure. Summary of the Invention

[0003] The main objective of this invention is to provide a coffee tamping device that can tamp coffee powder into a compact cake.

[0004] According to a first aspect of the present invention, a coffee tamping device is provided, comprising a mounting frame, a tamping hammer, and a driving mechanism. The mounting frame has a vertically extending tamping channel, the inner wall of which has a first guide groove extending obliquely downward. The tamping hammer includes a connecting body and a tamping head. The connecting body is fixedly connected to the driving mechanism. The tamping head is disposed within the tamping channel and rotatably connected to the connecting body. The tamping head is rotatable about the axis of the tamping channel. The side wall of the tamping head has a guide post inserted into the first guide groove. The driving mechanism drives the connecting body to move vertically, and the first guide groove guides the tamping head to rotate.

[0005] In a specific embodiment of the present invention, the powder pressing head includes a rotating cylinder, a powder pressing cylinder body, a connecting assembly, and a first elastic element. The upper ends of the rotating cylinder and the powder pressing cylinder body are open. The rotating cylinder has the guide post. The rotating cylinder is rotatably connected to the connecting assembly. The rotating cylinder is inserted into the powder pressing cylinder body. The guide post is located outside the powder pressing cylinder body. Vertically, the bottom end of the rotating cylinder is at a distance from the bottom surface of the inner cavity of the powder pressing cylinder body. The powder pressing cylinder body is slidably connected to the rotating cylinder body through the connecting assembly. The first elastic element is disposed inside the powder pressing cylinder body and is located on the lower side of the rotating cylinder body. The first elastic element is capable of elastic deformation along the vertical direction. The two ends of the first elastic element along the vertical direction are respectively connected to the powder pressing cylinder body and the rotating cylinder body, so that the positions of the powder pressing cylinder body and the rotating cylinder body are relatively fixed. The powder pressing cylinder body can move upward relative to the rotating cylinder body when subjected to an upward external force. The first elastic element is used to drive the powder pressing cylinder body to reset after the external force is lost.

[0006] In a specific embodiment of the present invention, the rotating cylinder includes a cylinder body and a connecting plate. The upper and lower ends of the cylinder body are both open ends. The cylinder body is inserted into the powder pressing cylinder. The cylinder body has the guide post. The connecting plate is connected to the cylinder body and extends along the axis of the cylinder body in the thickness direction. The connecting plate is at a distance from the lower end of the cylinder body. The connecting plate has a connecting through hole.

[0007] The connecting assembly includes a first connecting post and a first limiting block. The first connecting post is fixedly connected to the bottom surface of the inner cavity of the powder pressing cylinder, and the first connecting post extends vertically and is inserted into the connecting through hole. The upper end of the first connecting post is fixedly connected to the first limiting block, which is located inside the cylinder body and contacts the side of the connecting plate facing away from the bottom surface of the inner cavity of the powder pressing cylinder.

[0008] In a specific embodiment of the present invention, the upper end face of the powder pressing cylinder has a clearance groove, the clearance groove is connected to the inner cavity of the powder pressing cylinder, and in the vertical direction, the clearance groove is directly opposite the guide post, the clearance groove is used to avoid the guide post when the powder pressing cylinder moves upward.

[0009] In a specific embodiment of the present invention, the connecting body includes a connecting body, a second connecting post, and a second limiting block. The connecting body is connected to the driving mechanism. The second connecting post is fixedly connected to the bottom surface of the connecting body. The second connecting post extends vertically, and the second limiting block is fixedly connected to the end of the second connecting post that is vertically away from the connecting body.

[0010] The connecting plate has a snap-fit ​​through hole, which is spaced apart from the connecting through hole. The snap-fit ​​through hole includes a connecting hole portion and a clearance hole portion that communicate with each other. The clearance hole portion is used to avoid the second limiting block so that the second connecting post can pass through the clearance hole portion.

[0011] The connecting hole is arc-shaped and extends around the axis of the cylinder body. The second connecting post passes through the connecting hole. The second limiting block is located below the connecting hole and contacts the cylinder body. In the extending direction of the connecting hole, the length of the connecting hole is greater than the length of the second connecting post.

[0012] In a specific embodiment of the present invention, the inner wall surface of the powder pressing channel has a second guide groove, which extends vertically.

[0013] The side wall of the connector has a guide block, which is inserted into the second guide groove. The second guide groove is used to guide the connector to move vertically.

[0014] In a specific embodiment of the present invention, the mounting bracket has a first limiting protrusion, a second limiting protrusion, and a third limiting protrusion. The first limiting protrusion, the second limiting protrusion, and the third limiting protrusion are all connected to the inner wall surface of the powder pressing channel. The first limiting protrusion forms a first guide groove, the second limiting protrusion forms a second guide groove, and the third limiting protrusion extends vertically. There are multiple third limiting protrusions, which are spaced apart. The first limiting protrusion, the second limiting protrusion, and the third limiting protrusion all contact the side wall of the powder pressing head.

[0015] In a specific embodiment of the present invention, the driving mechanism includes a handle, a transmission assembly, a rotating shaft, a torsion spring, and a driving rod. The handle is rotatably connected to the mounting bracket. The transmission assembly is connected to the mounting bracket and drives the handle and the rotating shaft. The rotating shaft is rotatably connected to the mounting bracket. The torsion spring is sleeved on the rotating shaft and connected to the driving rod. One end of the driving rod along its length is fixedly connected to the rotating shaft, and the other end is movably connected to the connecting body. The torsion spring is used to drive the driving rod to reset.

[0016] In a specific embodiment of the present invention, the outer wall of the mounting frame is provided with a clearance through hole, which communicates with the powder pressing channel;

[0017] The rotating shaft is located on one side of the clearance through hole, the driving rod passes through the clearance through hole, and the driving rod can swing within the clearance through hole; the coffee tamping device also includes a grinding mechanism, the grinding mechanism is connected to the mounting frame, and the grinding mechanism and the rotating shaft are located on the same side of the clearance through hole;

[0018] The grinding mechanism includes a powder outlet nozzle, which is inserted into the clearance through hole and is located below the drive rod.

[0019] In a specific embodiment of the present invention, the coffee tamping device further includes a brake rod and a buffer block. The brake rod is connected to the mounting frame and contacts the side wall of the upper end of the connecting body. The buffer block is connected to the mounting frame and is located above the brake rod, and the buffer block contacts the top surface of the connecting body.

[0020] One of the above-described technical solutions of the present invention has at least one of the following advantages or beneficial effects:

[0021] In practical application, the coffee tamping device of the present invention has a coffee bowl connected to the bottom of a mounting frame, with the opening of the coffee bowl facing the tamping channel. The coffee bowl contains coffee powder, and the tamping hammer includes a connecting body and a tamping head. The connecting body is connected to a drive mechanism, and the tamping head is rotatably connected to the connecting body. The tamping head has a guide post, and the tamping channel has a first guide groove. The guide post is inserted into the first guide groove. Therefore, by driving the connecting body to descend, the tamping head can be driven to descend to apply pressure to the coffee powder in the coffee bowl. Based on the cooperation of the guide post and the first guide groove, the tamping head rotates around the axis of the tamping channel while descending. That is, the tamping head achieves tamping by rotating and pressing down. During this process, the rotation of the tamping head pushes the coffee powder particles to undergo relative displacement, causing coffee powder particles of different shapes and sizes to interlock and fill the gaps between the coffee powder particles. Thus, the coffee tamping device can tamp the coffee powder into a compact cake. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a structural diagram of the coffee tamping device according to an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of the coffee tamping device according to another embodiment of the present invention;

[0025] Figure 3 This is a structural diagram of the coffee tamping device of the present invention without the grinding mechanism;

[0026] Figure 4 This is a structural diagram showing the assembly of the mounting bracket, brake lever, and buffer block according to an embodiment of the present invention;

[0027] Figure 5 This is a structural diagram of the powder pressing head according to an embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional view of the powder pressing head according to an embodiment of the present invention;

[0029] Figure 7 This is an exploded schematic diagram of the powder pressing head according to an embodiment of the present invention;

[0030] Figure 8 This is a structural diagram of the rotating cylinder according to an embodiment of the present invention;

[0031] Figure 9 This is a cross-sectional view of the guide block, brake rod, and buffer block in an embodiment of the present invention.

[0032] The figure labels for each figure are as follows:

[0033] 1. Mounting bracket; 101. Powder pressing channel; 102. First guide groove; 103. Second guide groove; 104. Clearance through hole; 11. First limiting protrusion; 12. Second limiting protrusion; 13. Third limiting protrusion;

[0034] 2. Powder tamping hammer; 21. Connecting body; 21A. Guide block; 211. Connecting body; 211A. First connecting part; 211B. Second connecting part; 212. Second connecting post; 213. Second limiting block; 22. Powder tamping head; 22A. Guide post; 221. Rotating cylinder; 2211. Cylinder body; 2212. Connecting plate; 222. Powder tamping cylinder; 2221. Circumvention groove; 223. Connecting assembly; 2231. First connecting post; 2232. First limiting block; 224. First elastic element;

[0035] 3. Drive mechanism; 31. Handle; 32. Transmission assembly; 33. Rotating shaft; 34. Torsion spring; 35. Drive rod;

[0036] 4. Grinding mechanism; 41. Powder nozzle;

[0037] 5. Brake lever;

[0038] 6. Buffer block;

[0039] 7. Second elastic element;

[0040] 100, connecting through hole; 200, snap-fit ​​through hole; 200A, connecting hole section; 200B, clearance hole section; 300, powder bowl. Detailed Implementation

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] Reference Figures 1 to 9As shown, a preferred embodiment of the coffee tamping device of this application includes a mounting frame 1, a tamping hammer 2, and a driving mechanism 3. The mounting frame 1 has a vertically extending tamping channel 101. The inner wall of the tamping channel 101 has a first guide groove 102, which extends downward at an angle. The tamping hammer 2 includes a connecting body 21 and a tamping head 22. The connecting body 21 is fixedly connected to the driving mechanism 3. The tamping head 22 is disposed in the tamping channel 101 and is rotatably connected to the connecting body 21. The tamping head 22 can rotate around the axis of the tamping channel 101. The side wall of the tamping head 22 has a guide post 22A, which is inserted into the first guide groove 102. The driving mechanism 3 is used to drive the connecting body 21 to move vertically, and the first guide groove 102 is used to guide the rotation of the tamping head 22.

[0043] In practical applications, the coffee bowl 300 is connected to the bottom of the mounting bracket 1, with its opening facing the tamping channel 101. The coffee bowl 300 holds coffee powder. The tamping hammer 2 includes a connecting body 21 and a tamping head 22. The connecting body 21 is connected to the drive mechanism 3, and the tamping head 22 is rotatably connected to the connecting body 21. The tamping head 22 has a guide post 22A, and the tamping channel 101 has a first guide groove 102. The guide post 22A is inserted into the first guide groove 102. Therefore, by driving the connecting body 21 to descend, the tamping head can be driven. The tamping head 22 descends to apply pressure to the coffee powder in the tamping tray 300. Based on the cooperation of the guide column 22A and the first guide groove 102, the tamping head 22 rotates around the axis of the tamping channel 101 while descending. That is, the tamping head 22 achieves tamping by rotating and pressing down. During this process, the rotation of the tamping head 22 pushes the coffee powder particles to undergo relative displacement, causing coffee powder particles of different shapes and sizes to interlock and fill the gaps between the coffee powder particles. Thus, the coffee tamping device can tamp the coffee powder into a compact puck.

[0044] In this embodiment, the powder pressing head 22 includes a rotating cylinder 221, a powder pressing cylinder 222, a connecting assembly 223, and a first elastic element 224. The upper ends of the rotating cylinder 221 and the powder pressing cylinder 222 are open. The rotating cylinder 221 has a guide post 22A. The rotating cylinder 221 is rotatably connected to the connecting body 21. The rotating cylinder 221 is inserted into the powder pressing cylinder 222, and the guide post 22A is located outside the powder pressing cylinder 222. Vertically, there is a distance between the bottom end of the rotating cylinder 221 and the bottom surface of the inner cavity of the powder pressing cylinder 222. This distance allows the rotating cylinder 221 and the powder pressing cylinder 222 to undergo the following axial relative displacement. The powder pressing cylinder 222 is connected to the rotating cylinder 221 via the connecting assembly 223. The powder pressing cylinder 222 is slidably connected and can slide vertically. A first elastic element 224 is located inside the powder pressing cylinder 222 and below the rotating cylinder 221. The first elastic element 224 can elastically deform vertically. The two ends of the first elastic element 224 are connected to the powder pressing cylinder 222 and the rotating cylinder 221 respectively, so that the positions of the powder pressing cylinder 222 and the rotating cylinder 221 are relatively fixed. The powder pressing cylinder 222 can move upward relative to the rotating cylinder 221 when subjected to an upward external force. The first elastic element 224 drives the powder pressing cylinder 222 to reset after the external force is lost. Specifically, the rotating cylinder 221 has a guide post 22A; therefore, the first guide groove 102 guides the rotating cylinder. The rotating cylinder 221 rotates, and since it is connected to the tamping cylinder 222 via the connecting assembly 223, and the tamping cylinder 222 can slide vertically, and the first elastic element 224 keeps the rotating cylinder 221 and the tamping cylinder 222 relatively fixed in the vertical position, the rotation of the rotating cylinder 221 will also drive the tamping cylinder 222 to rotate. The tamping cylinder 222 achieves tamping by rotating and pressing down. Based on the setting of the first elastic element 224, when the bottom surface of the tamping cylinder 222 abuts against the coffee powder in the coffee bowl 300 and receives vertical resistance, the drive mechanism 3 continues to drive the rotating cylinder 221 to rotate downward around its axis. Due to the resistance, the tamping cylinder 222 cannot... Simultaneously descending, a relative axial displacement occurs between the two, that is, the tamping cylinder 222 moves vertically relative to the rotating cylinder 221. During this process, the first elastic element 224 is compressed vertically, and the first elastic element 224 generates a reverse elastic force due to the compression. This elastic force acts on the tamping cylinder 222 and is transmitted to the coffee powder layer. As the rotating cylinder 221 continues to descend, the compression of the first elastic element 224 increases, and the pressure acting on the powder layer increases accordingly, which is beneficial to compacting the coffee powder into a compact cake. After the tamping operation is completed, the rotating cylinder 221 is driven upward by the drive mechanism 3, the bottom surface of the tamping cylinder 222 is separated from the cake, the resistance disappears, and the elastic element 224 recovers its elasticity, causing the tamping cylinder 222 to return to its original position.

[0045] The advantage of the tamping head 22 with the above structure is that while rotating and pressing down to tamp the coffee powder, it can also provide elastic force to the coffee powder in the coffee bowl 300 through the first elastic element 224, which is beneficial to tamping the coffee powder into a compact coffee puck.

[0046] For example, the first elastic element 224 is a spring, wherein the bottom surface of the connecting plate 2212 of the rotating cylinder 221 has a first positioning post, and the bottom surface of the inner cavity of the powder pressing cylinder 222 has a second positioning post. The first positioning post and the second positioning post are directly opposite each other in the vertical direction, and the two ends of the spring along its length direction are respectively sleeved on the first positioning post and the second positioning post. The structure is simple and easy to install.

[0047] In this embodiment, the rotating cylinder 221 includes a cylinder body 2211 and a connecting plate 2212. The upper and lower ends of the cylinder body 2211 are both open. The cylinder body 2211 is inserted into the powder pressing cylinder 222. The cylinder body 2211 has a guide post 22A. The connecting plate 2212 is connected to the cylinder body 2211, and the thickness direction of the connecting plate 2212 extends along the axis of the cylinder body 2211. The connecting plate 2212 and the cylinder body 2211 are integrally connected. The connecting plate 2212 is spaced from the lower end of the cylinder body 2211, and the connecting plate 2212 has a connecting through hole 100; the connecting assembly 223 includes a first connecting post 2231 and a first limiting block 2232. The first connecting post 2231 is fixedly connected to the bottom surface of the inner cavity of the powder pressing cylinder body 222, and the first connecting post 2231 extends vertically and is inserted into the connecting through hole 100. The upper end of the first connecting post 2231 is fixedly connected to the first limiting block 223. 2. The first limiting block 2232 is located inside the cylinder body 2211, and the first limiting block 2232 contacts the side of the connecting plate 2212 facing away from the bottom surface of the inner cavity of the powder pressing cylinder 222. Specifically, the connecting plate 2212 maintains contact with the first limiting block 2232 under the action of the first elastic member 224, thereby fixing the rotating cylinder 221 and the powder pressing cylinder 222 in a relatively fixed vertical position. When the powder pressing cylinder 222 is subjected to resistance, the first connecting column 2231 slides vertically along the connecting through hole 100, and the powder pressing cylinder 222 can move smoothly upward relative to the rotating cylinder 221. That is, the connecting component 223 of this structure is simple and reliable. The connecting component 223 cooperates with the first elastic member 224 to realize the connection between the rotating cylinder 221 and the powder pressing cylinder 222 and fix their relative positions, and also allows the powder pressing cylinder 222 to move smoothly upward relative to the rotating cylinder 221 when it is subjected to resistance.

[0048] For example, the first limiting block 2232 is the head of a screw, and the screw is threadedly connected to the first connecting post 2231.

[0049] In this embodiment, there are multiple connecting components 223. The number of connecting through holes 100 on the connecting plate 2212 is adapted to the number of connecting components 223. The rotating cylinder 221, the powder pressing cylinder 222 and the first elastic member 224 are coaxially arranged. Multiple connecting components 223 are arranged around the first elastic member 224. For example, the number of connecting components 223 and connecting through holes 100 are three each.

[0050] In this embodiment, since the rotating cylinder 221 is inserted into the powder pressing cylinder 222, and the main body 2211 of the rotating cylinder 221 has a guide post 22A, and the powder pressing cylinder 222 can move upward relative to the rotating cylinder 221, the upper end face of the powder pressing cylinder 222 has a clearance groove 2221. The clearance groove 2221 communicates with the inner cavity of the powder pressing cylinder 222. Vertically, the clearance groove 2221 faces the guide post 22A. The clearance groove 2221 is used to avoid the guide post 22A when the powder pressing cylinder 222 moves upward; when the powder pressing cylinder 222 moves upward relative to the rotating cylinder... When 221 moves upward, the guide post 22A is accommodated in the clearance groove 2221 to avoid the guide post 22A interfering with the upward movement of the powder pressing cylinder 222, and the structure of the powder pressing head 22 is reliable. In addition, since the rotating cylinder 221 and the powder pressing cylinder 222 are inserted and matched, the limitation of the guide post 22A on the insertion depth is eliminated based on the setting of the clearance groove 2221, and the rotating cylinder 221 can adopt a relatively larger insertion depth. Thus, the matching length between the rotating cylinder 221 and the powder pressing cylinder 222 is increased, and the matching stability between the rotating cylinder 221 and the powder pressing cylinder 222 is high.

[0051] In this embodiment, the connecting body 21 includes a connecting main body 211, a second connecting post 212, and a second limiting block 213. The connecting main body 211 is connected to the driving mechanism 3. The second connecting post 212 is fixedly connected to the bottom surface of the connecting main body 211 and extends vertically. The second limiting block 213 is fixedly connected to the end of the second connecting post 212 that is vertically away from the connecting main body 211. The connecting plate 2212 has a snap-fit ​​through hole 200, which is spaced apart from the connecting through hole 100. The snap-fit ​​through hole 200 includes a connecting hole portion 200A and a clearance hole portion 200 that communicate with each other. 00B; The clearance hole 200B is used to avoid the second limiting block 213, so that the second connecting post 212 can pass through the clearance hole 200B; wherein, the connecting hole 200A is arc-shaped and extends around the axis of the cylinder body 2211, the second connecting post 212 passes through the connecting hole 200A, the second limiting block 213 is located below the connecting hole 200A, and the second limiting block 213 contacts the cylinder body 2211, and in the extending direction of the connecting hole 200A, the length of the connecting hole 200A is greater than the length of the second connecting post 212; specifically, in the connecting body When the connecting plate 21 is assembled with the rotating cylinder 221, the clearance hole 200B allows the second limiting block 213 to pass through, thereby enabling the second connecting post 212 to enter the connecting hole 200A through the clearance hole 200B. In the initial state, the connecting plate 2212 of the rotating cylinder 221 remains in contact with the second limiting block 213 due to gravity. However, as the connecting body 21 drives the rotating cylinder 221 downward, the connecting plate 2212 separates from the second limiting block 213, and the bottom surface of the connecting body 211 contacts the top surface of the cylinder body 2211, driving the cylinder body 2211. As the connecting body 21 drives the rotating cylinder 221 upward, the second limiting block 213 contacts the connecting plate 2212, and the second limiting block 213 drives the rotating cylinder 221 upward. In practical applications, when the rotating cylinder 221 rotates under the action of the first guide groove 102, the second limiting post moves relative to the rotating cylinder 221 along the extension direction of the connecting hole 200A and away from the avoidance hole 200B, so as to avoid the situation where the second limiting block 213 is directly facing the avoidance hole 200B vertically after the rotating cylinder 221 rotates, effectively preventing the connecting body 21 and the rotating cylinder 221 from accidentally separating.

[0052] The connecting body 21 described above has a simple structure and is easy to install. It can effectively connect with the powder pressing head 22 and ensure that the powder pressing head 22 can rotate smoothly.

[0053] In this embodiment, the inner wall of the powder pressing channel 101 has a second guide groove 103, which extends vertically; the side wall of the connector 21 has a guide block 21A, which is inserted into the second guide groove 103. Vertically, the length of the second guide groove 103 is greater than the length of the guide block 21A. The second guide groove 103 is used to guide the connector 21 to move vertically. The second guide groove 103 plays a guiding role, which can ensure the smooth movement of the connector 21. In addition, the lower end of the second guide groove 103 plays a limiting role, which can limit the downward displacement of the connector 21 and effectively avoid the excessive compaction of the powder cake by the powder pressing head 22.

[0054] It should be noted that the upper ends of the first guide groove 102 and the second guide groove 103 are both open to facilitate the installation of the guide post 22A and the guide block 21A.

[0055] In this embodiment, the mounting bracket 1 has a first limiting protrusion 11, a second limiting protrusion 12, and a third limiting protrusion 13. The first limiting protrusion 11, the second limiting protrusion 12, and the third limiting protrusion 13 are all fixedly connected to the inner wall of the powder pressing channel 101. The first limiting protrusion 11 forms a first guide groove 102, the second limiting protrusion 12 forms a second guide groove 103, and the third limiting protrusion 13 extends vertically. There are multiple third limiting protrusions 13, spaced apart. The first limiting protrusion 11, the second limiting protrusion 12, and the third limiting protrusion 13 all contact the side wall of the powder pressing head 22's powder pressing cylinder 222. Specifically, the first limiting protrusion 11 forms the first guide groove 102, the second limiting protrusion 12 forms the second guide groove 103, and the third limiting protrusion 13 extends vertically. The two limiting protrusions 12 form the second guide groove 103, which eliminates the need to thin the wall thickness of the mounting frame 1 to form the guide groove, thus ensuring the structural strength of the mounting frame 1. The third limiting protrusion 13, in conjunction with the first limiting protrusion 11 and the second limiting protrusion 12, contacts the side wall of the powder pressing cylinder 222, thus acting as a radial limiter, making the downward movement of the powder pressing cylinder 222 smooth. In addition, the contact area between the first limiting protrusion 11, the second limiting protrusion 12, and the third limiting protrusion 13 and the powder pressing cylinder 222 is relatively small, reducing friction and making the movement of the powder pressing cylinder 222 smoother. Furthermore, the first limiting protrusion 11, the second limiting protrusion 12, and the third limiting protrusion 13 can also enhance the structural strength of the mounting frame 1.

[0056] In this embodiment, the drive mechanism 3 includes a handle 31, a transmission assembly 32, a rotating shaft 33, a torsion spring 34, and a drive rod 35. The handle 31 is rotatably connected to the mounting bracket 1. The transmission assembly 32 is connected to the mounting bracket 1 and drives the handle 31 and the rotating shaft 33. The rotating shaft 33 is rotatably connected to the mounting bracket 1. The torsion spring 34 is sleeved on the rotating shaft 33, with one end of the torsion spring 34 fixedly connected to the drive rod 35 and the other end fixedly disposed. One end of the drive rod 35 along its length is fixedly connected to the rotating shaft 33, and the other end is movably connected to the connecting body 21. The torsion spring 34 is used to drive the drive rod 35 to reset. In practical applications, the user... The drive handle 31 rotates to move the connecting body 21 downwards. Specifically, the rotation of the handle 31 drives the rotating shaft 33 to rotate via the transmission component 32. The rotation of the rotating shaft 33 drives the drive rod 35 to rotate downwards around the axis of the rotating shaft 33, thereby causing the connecting body 21 to move vertically downwards and driving the tamping head 22 to move downwards. The tamping head 22 tamps the coffee powder in the coffee bowl 300. During this process, the torsion spring 34 elastically deforms. When the tamping operation is completed, the user releases the handle 31, and the torsion spring 34 elastically returns to its original position. As a result, the drive rod 35 resets, driving the connecting body 21 and the tamping head 22 to move vertically upwards and reset. This type of drive mechanism 3 has a simple structure and is easy to use.

[0057] For example, the transmission assembly 32 includes a gear set, and the handle 31 is connected to the rotating shaft 33 via the gear set. The gear set includes a first gear, a second gear, and a third gear. The first gear meshes with the second gear, and the second gear meshes with the third gear. The first gear is fixedly connected to the handle 31 via a shaft, and the rotating shaft 33 is fixedly connected to the third gear.

[0058] The drive rod 35 has an oblong through hole at one end away from the rotation shaft 33 along its length direction. The oblong through hole extends along the length direction of the drive rod 35. The connecting body 21 includes connecting ears and a connecting shaft. There are two connecting ears. The two connecting ears are fixedly connected to the top surface of the connecting body 211 and located on opposite sides of the drive rod 35. The connecting shaft passes through the oblong through hole, and the two connecting ears are fixedly connected to both ends of the connecting shaft along its axis. This structure can ensure that the drive rod 35 can smoothly drive the connecting body 21 to move vertically.

[0059] In this embodiment, the outer wall of the mounting frame 1 is provided with a clearance through hole 104, which connects to the tamping channel 101; the rotating shaft 33 is located on one side of the clearance through hole 104, and the drive rod 35 passes through the clearance through hole 104. The drive rod 35 can swing within the clearance through hole 104. Since the rotating shaft 33 is located on one side of the mounting frame 1, the coffee tamping device has a compact structure.

[0060] Furthermore, the coffee tamping device also includes a grinding mechanism 4, which is connected to the mounting bracket 1 by screws. The grinding mechanism 4 and the rotating shaft 33 are located on the same side of the clearance through hole 104. The grinding mechanism 4 includes a powder outlet 41, which is inserted into the clearance through hole 104 and is located below the drive rod 35. That is, the rotating shaft 33 is located between the grinding mechanism 4 and the mounting bracket 1, and the powder outlet 41 also uses the clearance through hole 104 to deliver coffee powder to the tamping channel 101, resulting in a compact structure.

[0061] It should be noted that the grinding mechanism 4 is prior art and is not the point of invention of this application. This application will not elaborate on it further.

[0062] In this embodiment, the coffee tamping device also includes a brake rod 5 and a buffer block 6. The brake rod 5 is connected to the mounting frame 1 and contacts the upper side wall of the connecting body 21. The buffer block 6 is fixedly connected to the mounting frame 1 and is located above the brake rod 5. The buffer block 6 contacts the top surface of the connecting body 21. In practical applications, when the connecting body 21 moves downward under the action of the drive mechanism 3, the connecting body 21 separates from the brake rod 5 and the buffer block 6 to smoothly push the tamping head 22 downward. After the tamping operation is completed, and when the connecting body 21 is driven upward to reset under the action of the torsion spring 34, the upper side wall of the connecting body 21 first contacts the brake rod 5. The brake rod 5 can reduce the upward speed of the connecting body 21. Then, the top surface of the connecting body 21 contacts the buffer block 6. The buffer block 6 can buffer the impact force. Based on this, it can avoid damage to the mounting frame 1 and the connecting body 21 caused by excessive impact. For example, the buffer block 6 is made of silicone.

[0063] It should be noted that the buffer block 6 is fixed on the upper side of the second guide groove 103 by a limiting seat. The limiting seat is detachably fixed to the mounting frame 1 so that the buffer block 6 is connected to the mounting frame 1.

[0064] Furthermore, the connecting body 211 includes a first connecting portion 211A and a second connecting portion 211B connected vertically. The first connecting portion 211A is plate-shaped and extends horizontally in its thickness direction. The second connecting portion 211B is cylindrical, and both its sidewalls and bottom wall have weight-reducing holes. The connecting body 211 has the advantage of being lightweight. The second connecting post 212 is connected to the bottom surface of the second connecting portion 211B, and the connecting ear is connected to the top surface of the first connecting portion 211A. The first connecting portion 211A has a clearance space, which is connected to the space between the clearance space and the connecting ear. The clearance space is used to avoid the drive. Rod 35; In the direction perpendicular to the thickness direction of the first connecting part 211A, both ends of the first connecting part 211A are provided with guide blocks 21A. The number of second guide grooves 103 is adapted to the number of guide blocks 21A. The guide blocks 21A and the second guide grooves 103 are matched one by one. The number of brake rods 5 and buffer blocks 6 is adapted to the number of guide blocks 21A. The brake rods 5 and the guide blocks 21A are matched one by one. The buffer blocks 6 and the guide blocks 21A are matched one by one. That is, the brake rods 5 contact the side of the corresponding guide block 21A that is away from the first connecting part 211A, and the buffer blocks 6 contact the top surface of the corresponding guide block 21A.

[0065] Furthermore, the guide block 21A has a vertically extending connecting groove on the side facing away from the first connecting part 211A. The lower end of the connecting groove is open, and the brake rod 5 contacts the bottom surface of the connecting groove of the corresponding guide block 21A. The connecting groove plays a guiding and limiting role, and the structure is reliable. The mounting bracket 1 is connected to a second elastic element 7, which is a spring. Each brake rod 5 is fitted with a second elastic element 7 on its outer periphery. The second elastic element 7 is connected to the brake rod 5 and is used to make the brake rod 5 press against the guide block 21A, and the structure is reliable.

[0066] In this embodiment, the first connecting part 211A, the second connecting part 211B, the guide block 21A, the connecting ear, the second connecting post 212, and the second limiting block 213 are integrally connected, which has a simple structure and is easy to process.

[0067] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A coffee tamping device, characterized in that, The device includes a mounting frame (1), a powder-pressing hammer (2), and a drive mechanism (3). The mounting frame (1) has a vertically extending powder-pressing channel (101). The inner wall of the powder-pressing channel (101) has a first guide groove (102) that extends downward at an angle. The powder-pressing hammer (2) includes a connecting body (21) and a powder-pressing head (22). The connecting body (21) is fixedly connected to the drive mechanism (3). The powder-pressing head (22) is located in the powder-pressing channel. Inside 101), the powder pressing head (22) is rotatably connected to the connecting body (21). The powder pressing head (22) can rotate around the axis of the powder pressing channel (101). The side wall of the powder pressing head (22) has a guide post (22A). The guide post (22A) is inserted into the first guide groove (102). The driving mechanism (3) is used to drive the connecting body (21) to move vertically. The first guide groove (102) is used to guide the powder pressing head (22) to rotate.

2. The coffee tamping device according to claim 1, characterized in that, The powder pressing head (22) includes a rotating cylinder (221), a powder pressing cylinder (222), a connecting assembly (223), and a first elastic element (224). The upper ends of the rotating cylinder (221) and the powder pressing cylinder (222) are open. The rotating cylinder (221) has the guide post (22A). The rotating cylinder (221) is rotatably connected to the connecting body (21). The rotating cylinder (221) is inserted into the powder pressing cylinder (222). The guide post (22A) is located outside the powder pressing cylinder (222). Vertically, the bottom end of the rotating cylinder (221) is at a distance from the bottom surface of the inner cavity of the powder pressing cylinder (222). The powder pressing cylinder (222) is connected to the connecting assembly (223) via the connecting assembly (224). The rotating cylinder (221) is slidably connected, and the first elastic element (224) is disposed inside the powder pressing cylinder (222). The first elastic element (224) is located on the lower side of the rotating cylinder (221). The first elastic element (224) can elastically deform in the vertical direction. The two ends of the first elastic element (224) in the vertical direction are respectively connected to the powder pressing cylinder (222) and the rotating cylinder (221) so that the positions of the powder pressing cylinder (222) and the rotating cylinder (221) are relatively fixed. The powder pressing cylinder (222) can move upward relative to the rotating cylinder (221) when subjected to an upward external force. The first elastic element (224) is used to drive the powder pressing cylinder (222) to reset after losing the external force.

3. The coffee tamping device according to claim 2, characterized in that, The rotating cylinder (221) includes a cylinder body (2211) and a connecting plate (2212). The upper and lower ends of the cylinder body (2211) are open. The cylinder body (2211) is inserted into the powder pressing cylinder (222). The cylinder body (2211) has the guide post (22A). The connecting plate (2212) is connected to the cylinder body (2211). The thickness direction of the connecting plate (2212) extends along the axis of the cylinder body (2211). The connecting plate (2212) is at a distance from the lower end of the cylinder body (2211). The connecting plate (2212) has a connecting through hole (100). The connecting assembly (223) includes a first connecting post (2231) and a first limiting block (2232). The first connecting post (2231) is fixedly connected to the bottom surface of the inner cavity of the powder pressing cylinder (222), and the first connecting post (2231) extends vertically and is inserted into the connecting through hole (100). The upper end of the first connecting post (2231) is fixedly connected to the first limiting block (2232). The first limiting block (2232) is located in the cylinder body (2211), and the first limiting block (2232) contacts the side of the connecting plate (2212) facing away from the bottom surface of the inner cavity of the powder pressing cylinder (222).

4. The coffee tamping device according to claim 2, characterized in that, The upper end face of the powder pressing cylinder (222) has a relief groove (2221), which is connected to the inner cavity of the powder pressing cylinder (222). In the vertical direction, the relief groove (2221) is directly opposite the guide post (22A). The relief groove (2221) is used to avoid the guide post (22A) when the powder pressing cylinder (222) moves upward.

5. The coffee tamping device according to claim 3, characterized in that, The connecting body (21) includes a connecting body (211), a second connecting post (212), and a second limiting block (213). The connecting body (211) is connected to the driving mechanism (3). The second connecting post (212) is fixedly connected to the bottom surface of the connecting body (211). The second connecting post (212) extends vertically, and the second limiting block (213) is fixedly connected to one end of the second connecting post (212) that is vertically away from the connecting body (211). The connecting plate (2212) has a snap-fit ​​through hole (200), which is spaced apart from the connecting through hole (100). The snap-fit ​​through hole (200) includes a connecting hole portion (200A) and a clearance hole portion (200B) that communicate with each other. The clearance hole portion (200B) is used to avoid the second limiting block (213) so that the second connecting post (212) can pass through the clearance hole portion (200B). The connecting hole (200A) is arc-shaped and extends around the axis of the cylindrical body (2211). The second connecting post (212) passes through the connecting hole (200A). The second limiting block (213) is located on the lower side of the connecting hole (200A) and contacts the cylindrical body (2211). In the extending direction of the connecting hole (200A), the length of the connecting hole (200A) is greater than the length of the second connecting post (212).

6. The coffee tamping device according to claim 1, characterized in that, The inner wall of the powder pressing channel (101) has a second guide groove (103), which extends vertically. The side wall of the connector (21) has a guide block (21A), which is inserted into the second guide groove (103). The second guide groove (103) is used to guide the connector (21) to move vertically.

7. The coffee tamping device according to claim 6, characterized in that, The mounting bracket (1) has a first limiting protrusion (11), a second limiting protrusion (12) and a third limiting protrusion (13). The first limiting protrusion (11), the second limiting protrusion (12) and the third limiting protrusion (13) are all connected to the inner wall of the powder pressing channel (101). The first limiting protrusion (11) forms the first guide groove (102), the second limiting protrusion (12) forms the second guide groove (103), and the third limiting protrusion (13) extends vertically. There are multiple third limiting protrusions (13), and the multiple third limiting protrusions (13) are spaced apart. The first limiting protrusion (11), the second limiting protrusion (12) and the third limiting protrusion (13) are all in contact with the side wall of the powder pressing head (22).

8. The coffee tamping device according to claim 1, characterized in that, The drive mechanism (3) includes a handle (31), a transmission assembly (32), a rotating shaft (33), a torsion spring (34), and a drive rod (35). The handle (31) is rotatably connected to the mounting bracket (1). The transmission assembly (32) is connected to the mounting bracket (1) and the transmission assembly (32) drives the handle (31) and the rotating shaft (33). The rotating shaft (33) is rotatably connected to the mounting bracket (1). The torsion spring (34) is sleeved on the rotating shaft (33) and is connected to the drive rod (35). One end of the drive rod (35) is fixedly connected to the rotating shaft (33) along its length direction, and the other end is movably connected to the connecting body (21). The torsion spring (34) is used to drive the drive rod (35) to reset.

9. The coffee tamping device according to claim 8, characterized in that, The outer wall of the mounting bracket (1) is provided with a clearance through hole (104), which is connected to the powder pressing channel (101). The rotating shaft (33) is located on one side of the clearance through hole (104), the driving rod (35) passes through the clearance through hole (104), and the driving rod (35) can swing within the clearance through hole (104); The coffee tamping device also includes a grinding mechanism (4), which is connected to the mounting bracket (1). The grinding mechanism (4) and the rotating shaft (33) are located on the same side of the clearance through hole (104). The grinding mechanism (4) includes a powder outlet (41), which is inserted into the clearance through hole (104) and is located below the drive rod (35).

10. The coffee tamping device according to claim 8, characterized in that, The coffee tamping device also includes a brake rod (5) and a buffer block (6). The brake rod (5) is connected to the mounting frame (1) and contacts the side wall of the upper end of the connecting body (21). The buffer block (6) is connected to the mounting frame (1) and is located above the brake rod (5). The buffer block (6) contacts the top surface of the connecting body (21).

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