Analog hand-pour coffee brewing structure and coffee maker thereof

Abstract

This utility model discloses a simulated hand-cranked coffee brewing structure and coffee machine, including a lifting structure and a rotating structure. The rotating structure has a longitudinal water injection channel on its central axis, and a water tank is connected to the upper end of the water injection channel. The lifting structure is connected to a lifting sleeve, and the rotating structure is connected to a rotating platform, which is fitted inside the lifting sleeve. The rotating platform is connected to a longitudinally arranged linkage arm, and a pullable water injection head is connected to the lower end of the water injection channel. The two ends of the linkage arm are movably connected to the rotating platform and the water injection head, respectively. Through the lifting structure and the rotating structure, the linkage arm is driven to rotate while pulling the water injection head upward, changing the water injection direction and angle to form a spiral water injection path.

Description

Technical Field

[0001] This utility model belongs to the field of coffee machine technology, specifically relating to a simulated hand-cranked coffee brewing structure and its coffee machine. Background Technology

[0002] Cold brewing, a traditional coffee-making method, has long been favored by coffee lovers for its unique operational experience and flavor profile. Through adjusting the water flow speed, angle, and pouring trajectory, users can precisely control the extraction process, achieving personalized flavor expression, making it a favorite among coffee enthusiasts. The brewer precisely extracts the coffee's flavor by adjusting the water flow speed, temperature, and pouring point. The manual operation adds a sense of ritual to the brewing process, satisfying consumers' pursuit of a high quality of life. However, traditional cold brewing relies on human experience, resulting in a high operational threshold and inconsistent results. For example, uneven water flow may lead to under- or over-extraction, while unstable water temperature control can also affect the flavor.

[0003] The "circular pouring" technique is crucial for pouring coffee. The water flow needs to be balanced between a steady, continuous stream and appropriate pressure to prevent the coffee grounds from being dispersed or under-extracted. Most current coffee brewing methods are done manually, with the user manually controlling the water flow and coffee grounds. This requires a high level of skill, and ordinary users cannot replicate the level of a professional barista. Using a mechanical structure, however, requires rotation and constant adjustment of the pouring angle to simulate the pouring effect. This places high demands on the mechanical structure, and mechanical simulation cannot guarantee stability during brewing. Furthermore, the process requires resetting after brewing, making it more complex. Summary of the Invention

[0004] To address the problems in related technologies, this utility model proposes a simulated hand-cranked coffee brewing structure and coffee machine. By utilizing a lifting structure, a rotating structure, and a linkage arm, a spiral water injection path is formed during coffee brewing, automatically and evenly brewing coffee and improving the coffee brewing effect.

[0005] This utility model is implemented as follows:

[0006] A simulated hand-cranked coffee brewing structure includes a lifting structure and a rotating structure. The rotating structure has a longitudinal water injection channel on its central axis, and a water tank is connected to the upper end of the water injection channel.

[0007] The lifting structure is connected to a lifting sleeve, and the rotating structure is connected to a rotating platform, which is fitted inside the lifting sleeve. The rotating platform is connected to a longitudinally arranged linkage arm, and the lower end of the water injection channel is connected to a pullable water injection head. The two ends of the linkage arm are respectively movably connected to the rotating platform and the water injection head.

[0008] The lifting structure drives the lifting sleeve to move upward, and the rotating structure drives the rotating platform to rotate. The rotating platform moves upward along with the lifting sleeve and pulls the linkage arm upward. The linkage arm rotates with the rotating platform and pulls the water injection head upward, so that the water injection head tilts to the circumference and injects water while rotating, forming a spiral water injection path. When the lifting sleeve moves upward to the maximum distance, the lifting structure drives the lifting sleeve to move in the opposite direction and reset the water injection head to a vertically downward state.

[0009] The drive structure and the lifting structure can work synchronously or independently.

[0010] Preferably, the upper and lower ends of the linkage arm are respectively connected to a transverse connecting shaft, and are movably connected to the rotary table and the water injection head through the connecting shaft.

[0011] Specifically, the linkage arm is pulled longitudinally by the two connecting shafts, which in turn pulls the water injection head to change the direction and angle of water injection.

[0012] Preferably, the linkage arm includes a connecting arm located in the middle and joint grooves connecting both ends of the connecting arm; two transverse shaft holes are symmetrically provided in the joint grooves; the rotary table and the water injection head are respectively provided with connecting rods extending towards the location of the linkage arm, and the ends of the connecting rods are provided with connecting shafts perpendicular to them; the connecting shafts are located in the joint grooves on their respective sides and are respectively engaged with the two shaft holes in the joint grooves.

[0013] Specifically, the connecting rod of the rotary table is vertical and moves up and down longitudinally to pull the linkage arm; while the connecting rod of the water injection head moves with the linkage arm and forms an angle greater than 0 degrees with the horizontal plane. Joint grooves are provided at both the upper and lower ends to create a joint-linked movement.

[0014] Preferably, the lifting sleeve includes a U-shaped sleeve with an opening on one side, and a connecting part disposed on the opposite side of the opening end. The connecting part extends away from the opening end of the U-shaped sleeve and is connected to the lifting structure. The inner side of the U-shaped sleeve is provided with a slot that opens inward, and the rotating platform is engaged with the slot.

[0015] The lifting structure includes a lifting drive motor, on which a longitudinal screw is connected. The connecting part is sleeved on the outside of the screw and is adapted to the screw. The screw drives the lifting sleeve to move up and down. A contact is also provided on one side of the connecting part, and a steering component is provided at the corresponding position of the contact.

[0016] Specifically, the lifting sleeve moves vertically by means of the lifting mechanism and the lifting power provided by the screw, and drives the rotating table to move up and down by means of the cooperation between the lifting mechanism and the screw. The rotating table can also rotate while moving up and down.

[0017] The lifting sleeve and the rotating table are provided with a fixed shell on the outside. The lifting mechanism and the screw are located on the outside of the fixed shell. The steering component is set on the outer side of the fixed shell. The connecting part extends to the outside of the fixed shell. The position of the contact and the steering component are adapted by setting the contact and the steering component. The contact and the steering component are mainly used to control the lifting sleeve to automatically return to the original position when it is raised to the maximum position.

[0018] Preferably, the rotating platform is symmetrically provided with two longitudinal column holes, and a rotating column is connected to the upper end of the rotating platform. The rotating column is connected to the rotating structure; the rotating platform and the rotating structure are integrally formed.

[0019] The rotating structure includes a rotating drive motor, on which a longitudinal rotating outer column is connected. The upper end of the rotating column is located inside the rotating outer column and engages with the rotating inner column. When the lifting structure drives the rotating platform to move longitudinally, the rotating column moves up and down along the inner side of the rotating outer column.

[0020] Specifically, the rotating structure and rotating outer column provide the power for rotation, driving the rotating column and rotating platform to rotate. At the same time, the rotating column and rotating platform will also move up and down with the lifting sleeve.

[0021] Preferably, the rotating structure, rotating column, and rotating platform are located on the same central axis. The water injection channel passes through the rotating column and rotating platform sequentially from top to bottom along the central axis of the rotating structure. The end of the water injection channel that connects to the water injection head has a connecting section. The connecting section is located below the rotating platform. The pipe diameter of the connecting section is smaller than the pipe diameter of the water injection channel. A metal pipe is sleeved inside the connecting section. The other end of the metal pipe is connected to the water injection head, and the water injection head is sleeved on the outside of the metal pipe.

[0022] Specifically, the connecting section and the water injection channel are integrally formed; the water injection channel is a flexible hose, and the metal pipe is made of metal; the water injection channel is fixed, while the water injection head can rotate. When the water injection head is pulled, the metal pipe moves with the water injection head, and the connecting section moves with the metal pipe.

[0023] Preferably, the lower end of the rotating platform is provided with a rotating base, and the rotating base is symmetrically provided with positioning columns corresponding to the positions of the column holes. The water injection head is located between the two positioning columns and passes through the rotating base. A sealing ring is also provided in the middle of the rotating base, and the sealing ring is sleeved on the outside of the water injection head.

[0024] Specifically, the column hole and the positioning column are connected in a mating manner. The rotating base and the positioning column can only rotate. Since the positioning column passes through the column hole, the column hole moves up and down along the positioning column. When the rotating table and the rotating column rotate, the rotating base also rotates, and the linkage arm rotates together with the rotating table. The sealing rings are respectively connected to the rotating base and the water injection head for sealing.

[0025] Preferably, a fixing member is provided at the corresponding position of the two positioning columns, and a horizontal axis is provided between the two fixing members; a connecting member protrudes from the water injection head at the corresponding position between the two fixing members, and both fixing members and the connecting member are provided with a horizontal through hole on the same straight line, and the horizontal axis passes through the horizontal through hole and is movably connected to the connecting member.

[0026] Specifically, the fixing component is set on the rotating base and connected to the water injection head through the horizontal axis. When the water injection head is pulled longitudinally by the linkage arm, the connecting component rotates around the horizontal axis, producing an effect of joint linkage. Through the movable connection on both sides of the water injection head, the stability of its movement and water injection is ensured when it is pulled and rotated.

[0027] Preferably, the outer side of the rotating platform is provided with a fixed shell, the rotating base is snapped into the bottom of the fixed shell from below, and a receiving plate is also provided below the rotating base. The receiving plate has a hollow structure and is fixedly connected to the bottom of the fixed shell; the rotating base is supported on the bottom of the fixed shell by the receiving plate.

[0028] Specifically, the rotating mechanism, rotating column, rotating platform, U-shaped sleeve of the lifting sleeve, positioning column of the rotating base, linkage arm, etc., are all located inside the fixed shell; the receiving plate mainly limits the rotating base from below to prevent it from falling, but does not affect the rotation of the rotating base. The lower end of the water injection head passes through the receiving plate and injects water downwards.

[0029] A coffee machine that employs a simulated hand-cranked coffee brewing structure as described in any of the above.

[0030] Compared with the prior art, the present invention achieves the following beneficial effects:

[0031] This invention provides a simulated hand-cranked coffee brewing structure and coffee machine. Through a lifting and rotating structure, the linkage arm rotates while simultaneously pulling the water inlet head upwards, changing the direction and angle of the water inlet to form a spiral water path. This achieves automatic and uniform coffee brewing, improving the brewing effect. The linkage arm's structure mimics a human joint, with both ends connected to the rotating platform and the water inlet head respectively, creating a vertical connection. This makes the water inlet head more stable during rotation and vertical movement, ensuring a stable and balanced water path for more uniform coffee brewing. Furthermore, the water inlet head initially moves naturally vertically downwards. The lifting structure first drives the lifting sleeve upwards, pulling the linkage arm to change direction. Upon reaching its maximum distance, it moves downwards in the opposite direction, ultimately achieving a reset effect, allowing the water inlet head to automatically return to its initial position. This saves manual reset operations and provides great convenience. Attached Figure Description

[0032] Figure 1This is a schematic diagram of a coffee machine according to an embodiment of the present utility model;

[0033] Figure 2 This is a schematic diagram of a simulated hand-cranked coffee brewing structure in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the internal structure of a simulated hand-cranked coffee brewing structure in an embodiment of this utility model;

[0035] Figure 4 This is a cross-sectional schematic diagram of a simulated hand-cranked coffee brewing structure in an embodiment of this utility model;

[0036] Figure 5 This is an exploded structural diagram of a simulated hand-cranked coffee brewing structure in an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the back structure of a simulated hand-cranked coffee brewing structure in an embodiment of this utility model;

[0038] Figure 7 This is a schematic diagram of a lifting sleeve structure for simulating a hand-cranked coffee brewing structure in an embodiment of this utility model;

[0039] Figure 8 This is a schematic diagram of the connection structure between the rotating base and the water inlet head in an embodiment of the present invention, which simulates a hand-cranked coffee brewing structure.

[0040] Figure 9 This is a schematic diagram of the linkage arm connection in an embodiment of the present utility model, illustrating a simulated hand-cranked coffee brewing structure.

[0041] Figure 10 This is a schematic diagram of the linkage arm structure of a simulated hand-cranked coffee brewing structure in an embodiment of this utility model;

[0042] Figure 11 This is a schematic diagram of the water injection state of a simulated hand-cranked coffee brewing structure in an embodiment of this utility model;

[0043] Figure 12 This is a schematic diagram of the reset state of a simulated hand-cranked coffee brewing structure in an embodiment of this utility model.

[0044] Figure label:

[0045] 1. Lifting drive motor; 11. Screw;

[0046] 2. Lifting sleeve; 21. U-shaped sleeve; 22. Slot; 23. Connecting part;

[0047] 3. Rotary drive motor; 31. Rotary outer column;

[0048] 4. Rotary table; 41. Column hole; 42. Connecting rod; 43. Connecting shaft; 44. Rotating column;

[0049] 5. Water injection channel; 51. Connecting section;

[0050] 6. Metal pipes;

[0051] 7. Water inlet head; 71. Connecting parts;

[0052] 8. Linkage arm; 81. Connecting arm; 82. Joint groove; 83. Shaft hole;

[0053] 9. Fixed housing; 91. Rotating base; 911. Positioning pin; 912. Sealing ring; 913. Fixing component; 914. Horizontal shaft; 92. Receiving plate; 93. Contact component; 94. Steering component;

[0054] 10. Coffee machine. Detailed Implementation

[0055] 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 a part of the embodiments of the present utility model, and not all of them. 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.

[0056] Example

[0057] like Figures 1 to 12 A simulated hand-cranked coffee brewing structure includes a lifting structure and a rotating structure. The rotating structure has a longitudinal water injection channel 5 on its central axis, and a water tank is connected to the upper end of the water injection channel 5.

[0058] The lifting structure is connected to a lifting sleeve 2, and the rotating structure is connected to a rotating platform 4. The rotating platform 4 is fitted inside the lifting sleeve 2. The rotating platform 4 is connected to a longitudinally arranged linkage arm 8, and the lower end of the water injection channel 5 is connected to a pullable water injection head 7. The two ends of the linkage arm 8 are movably connected to the rotating platform 4 and the water injection head 7, respectively.

[0059] The drive structure and the lifting structure can work synchronously or independently.

[0060] The upper and lower ends of the linkage arm 8 are respectively connected to the horizontal connecting shaft 43, and are movably connected to the rotating table 4 and the water injection head 7 through the connecting shaft 43.

[0061] By using the two connecting shafts 43 to pull the linkage arm 8 longitudinally, the linkage arm 8 pulls the water injection head 7 to change the direction and angle of water injection.

[0062] The linkage arm 8 includes a connecting arm 81 located in the middle and joint grooves 82 connecting both ends of the connecting arm 81; two transverse shaft holes 83 are symmetrically provided in the joint grooves 82; the rotary table 4 and the water injection head 7 are respectively provided with connecting rods 42 extending towards the location of the linkage arm 8, and each end of the connecting rod 42 is provided with a connecting shaft 43 perpendicular to it; the connecting shaft 43 is located in the joint groove 82 on its side and is respectively engaged with the two shaft holes 83 in the joint groove 82.

[0063] The connecting rod 42 of the rotating platform 4 is vertical and moves longitudinally up and down to pull the linkage arm 8; while the connecting rod 42 of the water injection head 7 moves with the linkage arm 8 and forms an angle greater than 0 degrees with the horizontal plane. Articulated grooves 82 are provided at both the upper and lower ends to form a joint-linked movement.

[0064] The lifting sleeve 2 includes a U-shaped sleeve 21 with an opening on one side, and a connecting part 23 disposed on the opposite side of the opening end. The connecting part 23 extends away from the opening end of the U-shaped sleeve 21 and is connected to the lifting structure. The inner side of the U-shaped sleeve 21 is provided with a slot 22, which opens inward, and the rotating platform 4 is engaged with the slot 22.

[0065] The lifting structure includes a lifting drive motor 1, on which a longitudinal screw 11 is connected. The connecting part 23 is sleeved on the outside of the screw 11 and is adapted to the screw 11. The screw 11 drives the lifting sleeve 2 to move up and down. A contact is also provided on one side of the connecting part 23, and a steering part 94 is provided at the corresponding position of the contact.

[0066] The lifting sleeve 2 moves vertically by the lifting power provided by the lifting mechanism and the screw 11, and drives the rotating table 4 to move up and down by cooperating with it. The rotating table 4 can also rotate while moving up and down.

[0067] A fixed shell 9 is provided on the outside of the lifting sleeve 2 and the rotating table 4. The lifting mechanism and the screw 11 are located on the outside of the fixed shell 9. The steering component 94 is provided on the outer side of the fixed shell 9. The connecting part 23 extends to the outside of the fixed shell 9. The position of the contact and the steering component 94 are adapted by setting the contact and the steering component 94. The contact and the steering component 94 are mainly used to control the lifting sleeve 2 to automatically return to the original position when it is raised to the maximum position.

[0068] The rotating platform 4 is symmetrically provided with two longitudinal column holes 41, and a rotating column 44 is connected to the upper end of the rotating platform 4. The rotating column 44 is connected to the rotating structure; the rotating platform 4 and the rotating column are integrally formed.

[0069] The rotating structure includes a rotating drive motor 3, on which a longitudinal rotating outer column 31 is connected. The upper end of the rotating column 44 is located inside the rotating outer column 31 and is connected to the rotating inner column. When the lifting structure drives the rotating table 4 to move longitudinally, the rotating column 44 moves up and down along the inner side of the rotating outer column 31.

[0070] The rotating structure and rotating outer column 31 provide the power for rotation, driving the rotating column 44 and rotating platform 4 to rotate. At the same time, the rotating column 44 and rotating platform 4 will also move up and down with the lifting sleeve 2.

[0071] The rotating structure, rotating column 44, and rotating platform 4 are located on the same central axis. The water injection channel 5 passes through the rotating column 44 and rotating platform 4 from top to bottom along the central axis of the rotating structure. The end of the water injection channel 5 that is connected to the water injection head 7 has a connecting section 51. The connecting section 51 is located below the rotating platform 4. The pipe diameter of the connecting section 51 is smaller than the pipe diameter of the water injection channel 5. A metal pipe 6 is sleeved inside the connecting section 51. The other end of the metal pipe 6 is connected to the water injection head 7, and the water injection head 7 is sleeved on the outside of the metal pipe 6.

[0072] The connecting section 51 is integrally formed with the water injection channel 5; the water injection channel 5 is a flexible hose, and the metal pipe 6 is made of metal; the water injection channel 5 is fixed, while the water injection head 7 can rotate. When the water injection head 7 is pulled, the metal pipe 6 moves with the water injection head 7, and the connecting section 51 moves with the metal pipe 6.

[0073] The lower end of the rotating platform 4 is provided with a rotating base 91. The rotating base 91 is symmetrically provided with positioning posts 911 corresponding to the positions of the column holes 41. The water injection head 7 is located between the two positioning posts 911 and passes through the rotating base 91. The rotating base 91 is also provided with a sealing ring 912 in the middle. The sealing ring 912 is sleeved on the outside of the water injection head 7.

[0074] The column hole 41 and the positioning column 911 are connected in a mating manner. The rotating base 91 and the positioning column 911 can only rotate. Since the positioning column 911 passes through the column hole 41, the column hole 41 moves up and down along the positioning column 911. When the rotating table 4 and the rotating column 44 rotate, the rotating base 91 also rotates, and the linkage arm 8 also rotates with the rotating table 4. The sealing ring 912 is sealed and connected to the rotating base 91 and the water injection head 7 respectively.

[0075] Fixing members 913 are respectively provided at corresponding positions of the two positioning posts 911, and a horizontal shaft 914 is provided between the two fixing members 913; a connecting member 71 protrudes from the water injection head 7 at the corresponding position between the two fixing members 913. Both fixing members 913 and connecting member 71 are provided with transverse through holes on the same straight line. The horizontal shaft 914 passes through the transverse through hole and is movably connected to the connecting member 71.

[0076] The fixing part 913 is set on the rotating base 91 and connected to the connecting part 71 of the water injection head 7 through the horizontal shaft 914. When the water injection head 7 is pulled longitudinally by the linkage arm 8, the connecting part 71 rotates around the horizontal shaft 914, producing an effect of adapting to joint linkage. Through the movable connection on both sides of the water injection head 7, the stability of its movement and water injection is ensured when it is pulled and rotated.

[0077] The rotating platform 4 has a fixed shell 9 on its outer side. The rotating base 91 is snapped into the bottom of the fixed shell 9 from below. The rotating base 91 is also provided with a receiving plate below it. The receiving plate is a hollow structure and is fixedly connected to the bottom of the fixed shell 9. The rotating base 91 is supported on the bottom of the fixed shell 9 by the receiving plate.

[0078] The rotating mechanism, rotating column 44, rotating platform 4, U-shaped sleeve 21 of lifting sleeve 2, positioning column 911 of rotating base 91, linkage arm 8, etc., are all located inside the fixed shell 9; the receiving plate mainly limits the rotating base 91 from below to prevent it from falling, but does not affect the rotation of the rotating base 91. The lower end of the water injection head 7 passes through the receiving plate and injects water downwards.

[0079] A coffee machine 10 employs a simulated hand-cranked coffee brewing structure as described above.

[0080] This utility model provides a simulated hand-cranked coffee brewing structure and its coffee machine 10. The lifting structure drives the lifting sleeve 2 to move upward, and the rotating structure drives the rotating platform 4 to rotate. The rotating platform 4 moves upward along with the lifting sleeve 2 and pulls the linkage arm 8 upward. The linkage arm 8 rotates with the rotating platform 4 and pulls the water inlet head 7 upward, so that the water inlet head 7 tilts to the circumference and pours water when rotating, forming a spiral water inlet path. When the lifting sleeve 2 moves upward to the maximum distance, the lifting structure drives the lifting sleeve 2 to move in the opposite direction and reset the water inlet head 7 to a vertically downward state.

[0081] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A simulated hand-cranked coffee brewing structure, comprising a lifting structure and a rotating structure, wherein the rotating structure has a longitudinal water injection channel along its central axis, and a water tank is connected to the upper end of the water injection channel; characterized in that, The lifting structure is connected to a lifting sleeve, and the rotating structure is connected to a rotating platform, which is fitted inside the lifting sleeve. The rotating platform is connected to a longitudinally arranged linkage arm, and the lower end of the water injection channel is connected to a pullable water injection head. The two ends of the linkage arm are respectively movably connected to the rotating platform and the water injection head. The lifting structure drives the lifting sleeve to move upward, and the rotating structure drives the rotating platform to rotate. The rotating platform moves upward along with the lifting sleeve and pulls the linkage arm upward. The linkage arm rotates with the rotating platform and pulls the water injection head upward, causing the water injection head to tilt to the circumference and inject water while rotating, forming a spiral water injection path. When the lifting sleeve moves upward to the maximum distance, the lifting structure drives the lifting sleeve to move in the opposite direction, returning the water injection head to a vertically downward state.

2. The simulated hand-cranked coffee brewing structure according to claim 1, characterized in that, The upper and lower ends of the linkage arm are respectively connected to horizontal connecting shafts, and are movably connected to the rotary table and the water injection head through the connecting shafts.

3. The simulated hand-cranked coffee brewing structure according to claim 2, characterized in that, The linkage arm includes a connecting arm in the middle and joint grooves connecting both ends of the connecting arm; two transverse shaft holes are symmetrically provided in the joint grooves; the rotary table and the water injection head are respectively provided with connecting rods extending towards the location of the linkage arm, and the ends of the connecting rods are provided with connecting shafts perpendicular to them; the connecting shafts are located in the joint grooves on their respective sides and are respectively engaged with the two shaft holes in the joint grooves.

4. The simulated hand-cranked coffee brewing structure according to claim 1, characterized in that, The lifting sleeve includes a U-shaped sleeve with an opening on one side, and a connecting part disposed on the opposite side of the opening end. The connecting part extends away from the opening end of the U-shaped sleeve and is connected to the lifting structure. The inner side of the U-shaped sleeve is provided with a slot, which opens inward, and the rotating platform is engaged with the slot. The lifting structure includes a lifting drive motor, on which a longitudinal screw is connected. The connecting part is sleeved on the outside of the screw and is adapted to the screw. The screw drives the lifting sleeve to move up and down. A contact is also provided on one side of the connecting part, and a steering component is provided at the corresponding position of the contact.

5. The simulated hand-cranked coffee brewing structure according to claim 1, characterized in that, The rotating platform is symmetrically provided with two longitudinal column holes, and a rotating column is connected to the upper end of the rotating platform. The rotating column is connected to the rotating structure; the rotating platform and the rotating structure are integrally formed. The rotating structure includes a rotating drive motor, on which a longitudinal rotating outer column is connected. The upper end of the rotating column is located inside the rotating outer column and engages with the rotating inner column. When the lifting structure drives the rotating platform to move longitudinally, the rotating column moves up and down along the inner side of the rotating outer column.

6. The simulated hand-cranked coffee brewing structure according to claim 5, characterized in that, The rotating structure, rotating column, and rotating platform are located on the same central axis. The water injection channel passes through the rotating column and rotating platform sequentially from top to bottom along the central axis of the rotating structure. The end of the water injection channel that connects to the water injection head has a connecting section. The connecting section is located below the rotating platform. The pipe diameter of the connecting section is smaller than the pipe diameter of the water injection channel. A metal pipe is sleeved inside the connecting section. The other end of the metal pipe is connected to the water injection head, and the water injection head is sleeved on the outside of the metal pipe.

7. The simulated hand-cranked coffee brewing structure according to claim 6, characterized in that, The lower end of the rotating platform is provided with a rotating base, and the rotating base is symmetrically provided with positioning columns corresponding to the positions of the column holes. The water injection head is located between the two positioning columns and passes through the rotating base. The rotating base is also provided with a sealing ring in the middle, and the sealing ring is sleeved on the outside of the water injection head.

8. The simulated hand-cranked coffee brewing structure according to claim 7, characterized in that, Fixing members are provided at corresponding positions of the two positioning columns, and a horizontal axis is provided between the two fixing members; a connecting member protrudes from the water injection head at the corresponding position between the two fixing members, and both fixing members and the connecting member are provided with horizontal through holes on the same straight line, and the horizontal axis passes through the horizontal through holes and is movably connected to the connecting member.

9. The simulated hand-cranked coffee brewing structure according to claim 7, characterized in that, The rotating platform has a fixed shell on its outer side, and the rotating base is snapped into the bottom of the fixed shell from below. The rotating base is also provided with a receiving plate below it. The receiving plate has a hollow structure and is fixedly connected to the bottom of the fixed shell. The rotating base is supported on the bottom of the fixed shell by the receiving plate.

10. A coffee machine, characterized in that, The invention employs a simulated hand-cranked coffee brewing structure as described in any one of claims 1 to 9.

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