A coffee machine brewing unit

Abstract

The utility model aims at providing simple structure's coffee machine brewing unit. It includes casing and brewing cup subassembly, brewing cup subassembly activity sets up in the casing, including support, brewing cup, lifting mechanism and swing mechanism, brewing cup activity sets up in the support, has cup body and brewing piston, lifting mechanism below brewing piston and fixed connection, swing mechanism in support side part. There is transmission shaft that synchronous drive lifting mechanism and swing mechanism operation in the support, swing mechanism includes rotary component and elastic clutch component, elastic clutch component fixes on the support, rotary component and transmission shaft synchronous rotation, rotates to predetermined angle time, elastic clutch component and rotary component are engaged and rotate together, and drive brewing cup subassembly swing. Swing mechanism and lifting mechanism are designed as synchronous coordination operation mode, makes both highly cooperate in time and space, makes coffee machine each part action link more accurate, operation more smooth, and double system synchronous operation only needs a transmission shaft, does not need additional configuration.

Description

Technical Field

[0001] This utility model relates to the field of coffee machines, specifically to a coffee machine brewing unit. Background Technology

[0002] Coffee machines, widely used in modern homes and offices, automate the entire brewing process, from grinding and tamping coffee beans to filling, brewing, and cleaning up coffee grounds. However, most coffee machines on the market still have limitations in the structural design of their brewing units. The connection between the brewing cup supports often requires significant mechanical space; for example, the rotational trajectory of the fan-shaped frame structure during movement objectively results in a larger component size. This design not only makes the brewing components occupy more space in the machine, increasing its overall size, but also causes considerable inconvenience in daily maintenance, disassembly, cleaning, and installation. Utility Model Content

[0003] The purpose of this invention is to provide a coffee machine brewing unit with a simple structure.

[0004] The above objectives are achieved in this way.

[0005] A coffee machine brewing unit includes a housing and a brewing cup assembly. The brewing cup assembly is movably disposed within the housing. The brewing cup assembly includes a support, a brewing cup, a lifting mechanism, and a swinging mechanism. The brewing cup is movably disposed within the support. The brewing cup has a cup body and a brewing piston. The lifting mechanism is disposed below the brewing piston and fixedly connected to the brewing piston. The swinging mechanism is disposed on the side of the support. The support has a transmission shaft for synchronously driving the lifting mechanism and the swinging mechanism.

[0006] The swing mechanism includes a rotating component and an elastic clutch component. The elastic clutch component is fixedly mounted on the bracket. The rotating component rotates synchronously with the transmission shaft. When the rotating component rotates to a predetermined angle, the elastic clutch component engages with the rotating component and rotates together, thereby driving the brewing cup assembly to swing.

[0007] This utility model can also be improved in the following ways.

[0008] Preferably, the lifting mechanism includes a lifting rack and a transmission gear set. The lifting rack is fixedly disposed below the brewing piston, and the transmission gear set is connected to the lifting rack and the transmission shaft respectively to drive the brewing piston to move up and down.

[0009] Preferably, the elastic clutch component includes a clutch cavity, which is fixedly mounted on the bracket. An elastic actuating element is provided inside the clutch cavity, and the rotating component is provided with an actuating groove corresponding to the shape of the elastic actuating element. When the elastic actuating element is engaged in the actuating groove, the rotating component drives the bracket to swing.

[0010] The elastic actuating component includes a fixed base and a engaging ball head. The elastic actuating component is movably disposed within the clutch cavity. One end of the return spring is fixed to the fixed base, and the other end is fixed to a pre-set spring fixing position at the bottom of the clutch cavity. After the elastic actuating component exits the actuating groove, the return spring can quickly pull the elastic actuating component back to its initial position, preparing for the next engagement action. This provides the elastic force required for the elastic actuating component to reset. The depth and width of the actuating groove are adapted to the dimensions of the elastic actuating component to ensure that when the rotating component rotates to a predetermined angle, the elastic actuating component can accurately engage in the actuating groove, achieving stable transmission between the rotating component and the support.

[0011] Furthermore, the rotating component is provided with a first actuating groove and a second actuating groove, and a slide rail is provided between the first actuating groove and the second actuating groove for the elastic actuating component to slide. The slide rail, the first actuating groove, and the second actuating groove are located on the same circumference.

[0012] When the rotating component rotates, the elastic actuating element can slide along the slide rail. When it slides to the first actuating groove position, the elastic actuating element is engaged in the first actuating groove, realizing a transmission state between the rotating component and the bracket. When it continues to rotate to the second actuating groove position, the elastic actuating element is engaged in the second actuating groove, realizing another transmission state between the rotating component and the bracket.

[0013] Furthermore, the bracket is provided with a limiting post, and the housing is provided with an arc-shaped hole adapted to the limiting post. When the limiting post is located at the leftmost end of the arc-shaped hole, the brewing cup assembly is in the first position; when the limiting post is located at the rightmost end of the arc-shaped hole, the brewing cup assembly is in the second position; when the brewing cup assembly moves from the first position to the second position, the elastic clutch component engages in the first actuation groove; when the brewing cup assembly moves from the second position to the first position, the elastic clutch component engages in the second actuation groove.

[0014] The movement range of the brewing cup assembly is effectively limited by the combination of the limiting post and the arc-shaped hole, preventing it from exceeding the reasonable movement range.

[0015] Furthermore, the swing mechanism has a free stroke. When the swing mechanism drives the brewing cup assembly to the first position, the elastic clutch component disengages from the first actuation groove and engages in the slide rail, continuing to move in the slide rail. The rotating component no longer drives the support to swing. When the swing mechanism drives the brewing cup assembly to the second position, the elastic clutch component disengages from the second actuation groove and engages in the slide rail, continuing to move in the slide rail. The rotating component no longer drives the support to swing.

[0016] After the brewing cup assembly reaches a specific position, the transmission state between the rotating component and the support changes, and the rotating component no longer drives the support. This achieves stable stopping of the brewing cup assembly at a specific position and avoids problems such as positional deviation or excessive movement of the brewing cup assembly caused by continuous transmission.

[0017] Furthermore, when the brewing cup assembly leaves the first position, the drive shaft drives the rotating component to rotate, the elastic clutch component disengages from the slide rail and re-engages into the second actuation groove, the swing mechanism disengages from its idle stroke, and the rotating component drives the support to move again; when the brewing cup assembly leaves the second position, the drive shaft drives the rotating component to rotate, the elastic clutch component disengages from the slide rail and re-engages into the first actuation groove, the swing mechanism disengages from its idle stroke, and the rotating component drives the support to move again.

[0018] After the brewing cup assembly leaves the first or second position, it can quickly restore the transmission connection with the rotating component, ensuring that the swing mechanism can continue to drive the support to move, thereby realizing the flexible movement and precise positioning of the brewing cup assembly.

[0019] Furthermore, when the elastic clutch component slides from the first actuation slot to the second actuation slot, the lifting mechanism drives the brewing piston to rise. When the elastic clutch component engages with the second actuation slot from the slide rail, the brewing piston is lifted to the highest position by the lifting mechanism. When the elastic clutch component slides from the second actuation slot to the first actuation slot, the lifting mechanism drives the brewing piston to fall. When the elastic clutch component engages with the first actuation slot from the slide rail, the brewing piston is lowered to the lowest position by the lifting mechanism.

[0020] With the above setup, the brewing piston moves up and down simultaneously with the oscillating mechanism during the brewing process. This enables a series of operations, including receiving the powder in the brewing cup, extraction, and top-dregs removal. This improves brewing efficiency and quality, and makes the entire brewing process more automated and intelligent.

[0021] Preferably, it also includes a drive shaft locking device, wherein the outer wall of the drive shaft is provided with a limiting groove in the axial direction, and the brewing unit is provided with an elastic limiting mechanism corresponding to the limiting groove, wherein the elastic limiting mechanism is provided with a limiting pin, and the limiting pin is inserted into the limiting groove to lock the drive shaft.

[0022] When the coffee machine brewing unit is removed, the drive shaft needs to be locked to ensure that it is in the same brewing state after reinstallation. The elastic limit mechanism drives the limit pin to insert into the limit groove on the outer wall of the drive shaft under the action of elastic force, thereby locking the drive shaft and ensuring that the drive shaft will not rotate due to accidental factors when the coffee machine brewing unit is removed, so as not to affect the stability and accuracy of the next brewing.

[0023] Preferably, it also includes a scraper, which is disposed on the circumferential path of the brewing cup assembly as it moves from the first position to the second position. The approaching part of the scraper abuts against the port of the brewing cup, and the scraper is made of a soft material.

[0024] As the brewing cup assembly moves from the first position to the second position, the scraper's approaching part comes into close contact with the brewing cup port. Utilizing the properties of its soft material, it effectively scrapes away any residue adhering to the brewing cup port, preventing it from mixing into the coffee during subsequent brewing processes and affecting its taste and quality. This design not only improves the cleanliness of coffee brewing but also reduces the hassle of manual cleaning, further enhancing the automation and ease of use of the coffee machine.

[0025] By adopting the above technical solution, and designing the swing mechanism and lifting mechanism to operate in a synchronized and coordinated manner, a highly consistent coordination relationship is achieved between the two in time and space. This results in more precise action connections between the various components of the coffee machine during operation, a smoother operation, and simultaneous operation of the two systems requiring only one drive shaft, eliminating the need for separate drive shafts. This synchronized design not only improves the overall response efficiency of the system but also significantly enhances the stability and reliability of the equipment. Specifically, the swing mechanism employs a dual-drive mode, which ensures both transmission flexibility and increases system redundancy. Furthermore, a reasonable idle stroke is incorporated during the transition between drive modes, ensuring seamless coordination with the operating rhythm of other systems and further optimizing the overall performance of the machine. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the brewing unit.

[0027] Figure 2 This is an exploded view of the brewing unit.

[0028] Figure 3 This is a schematic diagram showing the brewing unit in its second position and the lifting mechanism lowered to its lowest position.

[0029] Figure 4 This is a schematic diagram of the swing mechanism when the brewing unit is in the second position and the lifting mechanism has descended to its lowest position.

[0030] Figure 5This is a schematic diagram of the lifting mechanism when the brewing unit reaches the first position.

[0031] Figure 6 This is a schematic diagram of the oscillation mechanism when the brewing unit reaches the first position.

[0032] Figure 7 This is a schematic diagram showing the lifting mechanism at its highest position when the brewing unit is in the first position.

[0033] Figure 8 This is a schematic diagram of the swing mechanism when the brewing unit is in the first position and the lifting mechanism is raised to the highest position.

[0034] Figure 9 This is a schematic diagram of the lifting mechanism when the brewing unit reaches the second position.

[0035] Figure 10 This is a schematic diagram of the oscillating mechanism when the brewing unit reaches the second position.

[0036] Figure 11 This is a schematic diagram showing the brewing unit in its second position and the lifting mechanism lowered to its lowest position.

[0037] Figure 12 This is a schematic diagram of the swing mechanism when the brewing unit is in the second position and the lifting mechanism has descended to its lowest position.

[0038] Figure 13 This is a schematic diagram showing the brewing unit after part of its housing has been removed.

[0039] Figure 14 for Figure 13 AA sectional view.

[0040] Figure 15 A schematic diagram of the brewing unit after removing the rotating components and part of the shell.

[0041] Figure 16 This is a schematic diagram of a rotating component.

[0042] Figure 17 This is a schematic diagram of a flexible actuating element.

[0043] Figure 18 This is a partial cross-sectional view of the brewing unit.

[0044] Figure 19 This is a schematic diagram of the locking pin.

[0045] Figure 20 This is a schematic diagram of a housing with a accommodating cavity.

[0046] Figure 21 This is a schematic diagram of an elastic limit mechanism.

[0047] In the diagram: 1. Housing 11. Receiving cavity 11. Through hole 12. Arc-shaped hole 13. Brewing cup assembly 2. Support 21. Brewing cup 22. Brewing piston 23. Mounting cavity 24. Limiting post 25. Lifting mechanism 3. Lifting rack 31. Transmission gear set 32. Transmission shaft 4. Limiting groove 41. Rotating component 5. First actuating groove 51. Second actuating groove 52. Slide rail 53. Engaging inclined surface 54. Disengaging inclined surface 55. Elastic clutch component 56. Clutch cavity 57. Elastic actuating component 58. Fixed seat 581. Guide structure 582. Engaging ball head 583. First return spring 59. Slag scraper 6. Approaching part 61. Slag baffle 62. Elastic limiting mechanism 7. Limiting pin 71. Positioning block 72. Interference hole 73. Second return spring 74. Detailed Implementation

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] The present invention provides a coffee brewing unit, which mainly includes a housing 1 and a brewing cup 22 assembly 2. The brewing cup 22 assembly 2 is movably disposed within the housing 1 and includes a support 21, a brewing cup 22, a lifting mechanism 3, and a swinging mechanism.

[0050] The brewing cup 22 is movably disposed within the support 21, and the brewing cup 22 comprises a cup body and a brewing piston 23. The lifting mechanism 3 is disposed below the brewing piston 23 and fixedly connected to it, for driving the brewing piston 23 to move up and down within the cup body. The swing mechanism is disposed on the side of the support 21, for driving the entire brewing cup 22 assembly 2 to swing within the housing 1. A drive shaft 4 is disposed within the support 21, which synchronously drives the lifting mechanism 3 and the swing mechanism.

[0051] Specifically, the lifting mechanism 3 includes a lifting rack 31 and a transmission gear set 32. The lifting rack 31 is fixedly disposed below the brewing piston 23. The transmission gear set 32 ​​is connected to both the lifting rack 31 and the transmission shaft 4. When the transmission shaft 4 rotates, the transmission gear set 32 ​​drives the lifting rack 31 to move up and down, thereby driving the brewing piston 23 to rise or fall within the cup.

[0052] The oscillating mechanism includes a rotating component 5 and an elastic clutch component 56. The elastic clutch component 56 is fixedly mounted on the support 21. The rotating component 5 rotates synchronously with the transmission shaft 4. When the rotating component 5 rotates to a predetermined angle, the elastic clutch component 56 engages with the rotating component 5 and rotates together, thereby driving the support 21 and the entire brewing cup 22 assembly 2 to oscillate via the elastic clutch component 56.

[0053] In this embodiment, the bracket 21 is provided with a mounting cavity 24 for accommodating the rotating member 5, and the elastic clutch member 56 includes a clutch cavity 57 fixedly disposed on the bracket 21. The clutch cavity 57 is fixedly disposed within the mounting cavity 24, and an elastic actuating member 58 is disposed within the clutch cavity 57. The end face of the clutch cavity 57 is lower than the end face of the mounting cavity 24. When the rotating member 5 is disposed within the mounting cavity 24, the elastic actuating member 58 is confined within the clutch cavity 57, engaging the ball head 583 to move on the rotating member 5. The rotating member 5 is provided with an actuating groove corresponding to the shape of the elastic actuating member 58. When the rotating member 5 rotates to a predetermined angle, such that the actuating groove aligns with the elastic actuating member 58, the elastic actuating member 58 is engaged in the actuating groove under its own elastic force. At this time, the rotating member 5 can drive the bracket 21 to rotate (i.e., swing) together through the elastic actuating member 58.

[0054] Specifically, the elastic actuating member 58 includes a fixed base 581 and an engaging ball head 583. The elastic actuating member 58 is movably disposed within the clutch cavity 57. One end of the first return spring 59 is fixed to the fixed base 581, and the other end is fixed to a preset spring fixing position at the bottom of the clutch cavity 57. When the elastic actuating member 58 needs to exit the actuating groove, the first return spring 59 is compressed or stretched. After the elastic actuating member 58 exits the actuating groove, the first return spring 59 can quickly pull the elastic actuating member 58 back to its initial position, preparing for the next engagement action. The depth and width of the actuating groove are adapted to the size of the engaging ball head 583 to ensure that when the rotating member 5 rotates to a predetermined angle, the engaging ball head 583 can be engaged in the actuating groove, realizing stable transmission between the rotating member 5 and the bracket 21.

[0055] More specifically, the rotating member 5 is provided with a first actuating groove 51 and a second actuating groove 52. A slide rail 53 is provided between the first actuating groove 51 and the second actuating groove 52 for sliding the engaging ball head 583 of the elastic actuating member 58. The slide rail 53, the first actuating groove 51, and the second actuating groove 52 are located on the same circumference.

[0056] More specifically, a guide structure 582 is provided on the outer wall of the fixed seat 581. This guide structure 582 guides the fixed seat 581 to move in a specific direction within the clutch cavity 57, preventing it from deviating. The guide structure 582 consists of protrusions extending outward from the outer wall of the fixed seat 581, arranged at equal intervals and numbering no fewer than three. In this embodiment, there are four equally spaced guide structures 582.

[0057] When the rotating component 5 rotates, the engaging ball head 583 of the elastic actuating component 58 can slide along the slide rail 53. When it slides to the first actuating groove 51 position, the engaging ball head 583 engages in the first actuating groove 51, realizing a transmission state between the rotating component 5 and the bracket 21; when it continues to rotate to the second actuating groove 52 position, the engaging ball head 583 engages in the second actuating groove 52, realizing another transmission state between the rotating component 5 and the bracket 21.

[0058] Specifically, the mating surfaces of the first actuating groove 51, the second actuating groove 52, and the slide rail 53 are provided with a locking inclined surface 54 to ensure that the engaging ball head 583 can stably engage with the actuating groove when the rotating component 5 rotates. The upper part of the two side walls of the first actuating groove 51 and the second actuating groove 52 that pass through the circumference of the slide rail 53 are provided with a disengagement inclined surface 55. The curvature of the disengagement inclined surface 55 is adapted to the curvature of the outer wall of the engaging ball head 583 to ensure that the engaging ball head 583 can stably disengage from the first actuating groove 51 or the second actuating groove 52 when the rotating component 5 rotates.

[0059] To limit the swing position of the brewing cup 22 assembly 2, a limiting post 25 is provided on the bracket 21, and an arc-shaped hole 13 adapted to the limiting post 25 is provided on the housing 1. When the limiting post 25 is located at the leftmost end of the arc-shaped hole 13, the brewing cup 22 assembly 2 is in the first position; when the limiting post 25 is located at the rightmost end of the arc-shaped hole 13, the brewing cup 22 assembly 2 is in the second position. When the brewing cup 22 assembly 2 moves from the first position to the second position, the engaging ball head 583 of the elastic clutch member 56 engages in the first actuation groove 51; when the brewing cup 22 assembly 2 moves from the second position to the first position, the engaging ball head 583 of the elastic clutch member 56 engages in the second actuation groove 52. Through the cooperation of the limiting post 25 and the arc-shaped hole 13, the movement range of the brewing cup 22 assembly 2 is effectively limited.

[0060] The swing mechanism has a free travel period. Specifically, when the swing mechanism drives the brewing cup 22 assembly 2 to the first position, the engaging ball head 583 of the elastic clutch member 56 disengages from the first actuating groove 51 and engages in the slide rail 53, continuing to move within the slide rail 53. At this time, the rotating member 5 disengages from the support 21, and continues to rotate but no longer drives the support 21 to swing. The lifting mechanism 3 is still operating. Similarly, when the swing mechanism drives the brewing cup 22 assembly 2 to the second position, the engaging ball head 583 of the elastic clutch member 56 disengages from the second actuating groove 52 and engages in the slide rail 53, continuing to move within the slide rail 53. The rotating member 5 no longer drives the support 21 to swing, and the lifting mechanism 3 is still operating. This allows the brewing cup 22 assembly 2 to remain stably stationary after reaching a specific position.

[0061] When the brewing cup 22 assembly 2 needs to leave the first position, the drive shaft 4 drives the rotating component 5 to rotate, the engaging ball head 583 of the elastic clutch component 56 disengages from the slide rail 53 and is re-engaged into the second actuating groove 52, the swing mechanism disengages from its empty stroke, and the rotating component 5 drives the support 21 to move again; when the brewing cup 22 assembly 2 leaves the second position, the drive shaft 4 drives the rotating component 5 to rotate, the engaging ball head 583 of the elastic clutch component 56 disengages from the slide rail 53 and is re-engaged into the first actuating groove 51, the swing mechanism disengages from its empty stroke, and the rotating component 5 drives the support 21 to move again.

[0062] The lifting mechanism 3 and the swing mechanism are interconnected: when the elastic clutch member 56 slides from the first actuation slot 51 through the slide rail 53 to the second actuation slot 52 (i.e., during the process of the brewing cup 22 assembly 2 swinging from the first position to the second position), the lifting mechanism drives the brewing piston 23 to rise; when the elastic clutch member 56 engages with the second actuation slot 52 from the slide rail 53, the brewing piston 23 is lifted to the highest position by the lifting mechanism. Conversely, when the elastic clutch member 56 slides from the second actuation slot 52 through the slide rail 53 to the first actuation slot 51 (i.e., during the process of the brewing cup 22 assembly 2 swinging from the second position to the first position), the lifting mechanism drives the brewing piston 23 to fall; when the elastic clutch member 56 engages with the first actuation slot 51 from the slide rail 53, the brewing piston 23 is lowered to the lowest position by the lifting mechanism. With the above settings, the raising and lowering action of the brewing piston 23 is completed simultaneously during the swinging process of the brewing cup 22 component 2, thereby realizing a series of operations such as powder collection, extraction and top residue removal in a smooth manner.

[0063] To ensure the position of the drive shaft 4 is fixed after the coffee brewing unit is removed, a locking device for the drive shaft 4 is also included. A limiting groove 41 is axially provided on the outer wall of the drive shaft 4. An elastic limiting mechanism 7 is provided within the brewing unit corresponding to the limiting groove 41. The core components of the elastic limiting mechanism 7 include a limiting pin 71 and a second return spring 74. The housing 1 has a receiving cavity 11 for accommodating the limiting pin 71 and the second return spring 74. The limiting pin 71 is movably disposed within the receiving cavity 11, and the second return spring 74 is placed within this receiving cavity 11, with one end connected to the limiting pin 71 and the other end connected to the inner wall of the receiving cavity 11.

[0064] When the brewing unit is detached from the base, the elastic limiting mechanism 7 is in its natural state. At this time, the second return spring 74 extends, pushing the limiting pin 71 outward so that it inserts into the limiting groove 41 of the drive shaft 4. Due to the obstruction of the limiting pin 71, the drive shaft 4 cannot rotate, thereby locking the drive shaft 4 and preventing accidental rotation of the drive shaft 4 or movement of the brewing unit when not in operation.

[0065] An unlocking pin is fixedly installed in the brewing unit mounting space of the machine base. When the brewing unit needs to be installed into the machine base, as the brewing unit is pushed into the brewing unit mounting space, the unlocking pin will be simultaneously inserted into the through hole 12 and interference hole 73 of the elastic limiting mechanism 7.

[0066] When the brewing unit is installed into the base, it is unlocked. To optimize the unlocking action, a through hole 12 is vertically formed on the wall of the accommodating cavity 11. A positioning block 72 is located at the bottom of the limiting pin 71, and an interference hole 73 is machined vertically corresponding to the through hole 12 on the positioning block 72. When the brewing unit is fully inserted into the base, reaching the correct working position, the through hole 12 on the accommodating cavity 11 and the interference hole 73 on the positioning block 72 coincide. At this time, the unlocking device will pass through the through hole 12 and the interference hole 73 in sequence. During this process, the unlocking device will press and position, forcing the limiting pin 71 to retract inward against the elastic force of the second return spring 74, thus completely exiting the limiting groove 41 on the drive shaft 4. Once the limiting pin 71 disengages from the limiting groove 41, the rotational constraint of the drive shaft 4 is released, and the brewing unit can enter normal working condition.

[0067] To ensure the reliability of the locked state, when the interference hole 73 and the through hole 12 are not aligned (i.e., the brewing unit is not fully inserted or has been dislodged), the limiting pin 71 will remain extended under the action of the second return spring 74 and will be inserted into the limiting groove 41 to achieve locking. In the unlocked state, i.e., when the interference hole 73 and the through hole 12 coincide and the unlocking device is inserted, the limiting pin 71 will retract to not extend beyond the elastic limiting mechanism 7.

[0068] To ensure that the elastic limiting mechanism 7 can smoothly lock the transmission shaft 4, the number of limiting grooves 41 is not less than four, and the limiting grooves 41 are equally spaced on the transmission shaft 4.

[0069] In addition, a scraper 6 is included. The scraper 6 is mounted on the housing 1, and its installation position corresponds to the circumferential path traversed by the brewing cup 22 assembly 2 as it swings from the first position to the second position. Specifically, when the brewing cup 22 assembly 2 is driven to switch between the first and second positions, a contact portion 61 designed on the scraper 6 will timely abut against the edge of the port of the brewing cup 22. Through this relative movement and contact, the coffee grounds firmly attached to the port are effectively scraped off.

[0070] To further enhance the thoroughness of coffee grounds scraping, the proximal portion 61 of the scraper 6 can be designed with a sharp shape, such as a blade or wedge. This sharp edge can precisely cut into and pry away stubborn coffee grounds stuck to the edges or crevices of the port, achieving deep cleaning and thus ensuring the hygiene of the inside of the brewing cup 22. The scraper blade 6 is made of a soft material, such as food-grade silicone or rubber with a certain degree of elasticity, ensuring effective scraping while avoiding scratches or wear on the port of the precision brewing cup 22 that might be caused by hard contact, thus extending the service life of the core component. Furthermore, the soft material can absorb some impact energy, effectively reducing noise generated during the scraping process and improving the user's operating environment.

[0071] In addition, a coffee grounds baffle 62 is added to the brewing cup 22 assembly 2. This baffle 62 is installed inside the brewing cup 22 assembly 2, positioned precisely on one side of the splash path when waste coffee grounds are scraped out. Its main function is to form a physical barrier, effectively preventing the scraped coffee grounds from flying into the interior of the brewing cup 22 or other areas that should not be contaminated, guiding the waste grounds to the designated collection area, thereby maintaining the cleanliness of the inside and surrounding environment of the brewing unit.

[0072] When it is necessary to stop the swing or change the swing state, the elastic actuating member 58 is disengaged from the actuating groove through a specific operation, thereby achieving the transmission separation between the rotating member 5 and the support 21. The first position is the maximum angle at which the brewing cup assembly 2 can swing to the left, and the second position is the maximum angle at which the brewing cup assembly 2 can swing to the right. When the brewing cup assembly 2 swings from the first position to the second position, the engaging ball head 583 engages in the second actuating groove 52; when the brewing cup assembly 2 swings from the second position to the first position, the engaging ball head 583 engages in the first actuating groove 51. When the engaging ball head 583 engages in the first actuating groove 51, the drive shaft rotates clockwise; when the engaging ball head 583 engages in the second actuating groove 52, the drive shaft rotates counterclockwise.

[0073] The engaging ball head 583 reciprocates sequentially between the first actuating groove 51, the slide rail 53, and the second actuating groove 52. When the engaging ball head 583 is in the first actuating groove 51 and the second actuating groove 52, the rotating component 5 and the support 21 are in a powered connection state; when the engaging ball head 583 is in the slide rail 53, the rotating component 5 and the support 21 are in a powered disengagement state. The rotating component 5 continues to rotate even when powered disengaged. When the brewing cup assembly 2 reaches the first or second position, it is limited and cannot continue to swing. At this time, the rotating component 5 continues to rotate. Subsequently, the rotating component 5 compresses the first return spring 59, causing the elastic actuating member 58 to retract into the clutch cavity 57, and the rotating component 5 and the support 21 enter a powered disengagement state. The elastic actuating member 58 is pressed into the slide rail 53 by the force of the first return spring 59 and continues to slide. The rotating component 5 continues to rotate but does not drive the support 21 to swing.

[0074] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coffee machine brewing unit, comprising a housing and a brewing cup assembly, the brewing cup assembly being movably disposed within the housing, the brewing cup assembly including a support, a brewing cup, a lifting mechanism, and a swinging mechanism, the brewing cup being movably disposed within the support, the brewing cup having a cup body and a brewing piston, the lifting mechanism being disposed below the brewing piston and fixedly connected to the brewing piston, and the swinging mechanism being disposed on the side of the support, characterized in that: The bracket is equipped with a transmission shaft for synchronously driving the lifting mechanism and the swing mechanism. The swing mechanism includes a rotating component and an elastic clutch component. The elastic clutch component is fixedly mounted on the bracket. The rotating component rotates synchronously with the transmission shaft. When the rotating component rotates to a predetermined angle, the elastic clutch component engages with the rotating component and rotates together, thereby driving the brewing cup assembly to swing.

2. The coffee brewing unit according to claim 1, characterized in that: The lifting mechanism includes a lifting rack and a transmission gear set. The lifting rack is fixedly installed below the brewing piston, and the transmission gear set is connected to the lifting rack and the transmission shaft to drive the brewing piston to move up and down.

3. The coffee brewing unit according to claim 1, characterized in that: The elastic clutch component includes a clutch cavity, which is fixedly mounted on a bracket. An elastic actuating element is provided inside the clutch cavity. The rotating component is provided with an actuating groove corresponding to the shape of the elastic actuating element. When the elastic actuating element is engaged in the actuating groove, the rotating component drives the bracket to swing.

4. The coffee brewing unit according to claim 3, characterized in that: The rotating component is provided with a first actuating groove and a second actuating groove, and a slide rail is provided between the first actuating groove and the second actuating groove for the elastic actuating component to slide. The slide rail, the first actuating groove, and the second actuating groove are located on the same circumference.

5. The coffee brewing unit according to claim 4, characterized in that: The bracket is provided with a limiting post, and the housing is provided with an arc-shaped hole adapted to the limiting post. When the limiting post is located at the leftmost end of the arc-shaped hole, the brewing cup assembly is in the first position; when the limiting post is located at the rightmost end of the arc-shaped hole, the brewing cup assembly is in the second position; when the brewing cup assembly moves from the first position to the second position, the elastic clutch component is engaged in the first actuation groove; when the brewing cup assembly moves from the second position to the first position, the elastic clutch component is engaged in the second actuation groove.

6. The coffee brewing unit according to claim 5, characterized in that: The swing mechanism has a free stroke. When the swing mechanism drives the brewing cup assembly to the first position, the elastic clutch component disengages from the first actuation groove and engages in the slide rail and continues to move in the slide rail. The rotating component no longer drives the support to swing. When the swing mechanism drives the brewing cup assembly to the second position, the elastic clutch component disengages from the second actuation groove and engages in the slide rail and continues to move in the slide rail. The rotating component no longer drives the support to swing.

7. The coffee brewing unit according to claim 5, characterized in that: When the brewing cup assembly leaves the first position, the drive shaft drives the rotating component to rotate, the elastic clutch component disengages from the slide rail and re-engages into the second actuating groove, the swing mechanism disengages from its idle stroke, and the rotating component drives the support to move again; when the brewing cup assembly leaves the second position, the drive shaft drives the rotating component to rotate, the elastic clutch component disengages from the slide rail and re-engages into the first actuating groove, the swing mechanism disengages from its idle stroke, and the rotating component drives the support to move again.

8. The coffee brewing unit according to claim 4, characterized in that: When the elastic clutch component slides from the first actuation slot to the second actuation slot, the lifting mechanism drives the brewing piston to rise. When the elastic clutch component engages with the second actuation slot from the slide rail, the brewing piston is lifted to the highest position by the lifting mechanism. When the elastic clutch component slides from the second actuation slot to the first actuation slot, the lifting mechanism drives the brewing piston to fall. When the elastic clutch component engages with the first actuation slot from the slide rail, the brewing piston is lowered to the lowest position by the lifting mechanism.

9. The coffee machine brewing unit according to claim 1, characterized in that: It also includes a drive shaft locking device, wherein the outer wall of the drive shaft is provided with a limiting groove in the axial direction, and the brewing unit is provided with an elastic limiting mechanism corresponding to the limiting groove. The elastic limiting mechanism is provided with a limiting pin, which is inserted into the limiting groove to lock the drive shaft.

10. The coffee brewing unit according to claim 1, characterized in that: It also includes a scraper, which is disposed on the circumferential path of the brewing cup assembly as it moves from the first position to the second position. The approaching part of the scraper abuts against the port of the brewing cup, and the scraper is made of a soft material.

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