Variable-pressure transmission structure and coffee machine

Abstract

The utility model relates to a variable-pressure transmission structure and a coffee machine, and belongs to the field of coffee machines, the variable-pressure transmission structure comprises a pressure regulating shell, the pressure regulating shell is provided with a liquid inlet channel and a liquid outlet channel, the pressure regulating shell is provided with a pressure regulating cavity, and the liquid outlet channel is communicated with the pressure regulating cavity; the piston assembly is arranged on the pressure regulating shell and located in the pressure regulating cavity, the piston assembly can move relative to the pressure regulating shell, the piston assembly at least has a first position and a second position when moving relative to the pressure regulating shell, and the piston assembly seals the liquid inlet channel when located at the first position; when the piston assembly is located at the second position, the liquid inlet channel communicates with the pressure adjusting cavity; and the pressure adjusting assembly is arranged on the pressure adjusting shell, and the part, extending into the pressure adjusting cavity, of the pressure adjusting assembly abuts against the piston assembly. According to the variable-pressure transmission structure, different forces such as F1 and F2 are applied to the piston assembly, so that the pressure of water flowing into the pressure adjusting cavity is different, and the purpose of pressure adjustment is achieved.

Description

Technical Field

[0001] This utility model relates to the field of coffee machines, and in particular to a variable voltage transmission structure and a coffee machine. Background Technology

[0002] Pressure regulation in coffee machines plays a crucial role in coffee making, affecting not only extraction efficiency but also the taste and quality of the coffee. However, existing coffee machines have the following drawbacks: the pressure regulation structure is relatively complex, the adjustment method is cumbersome, and even if a pressure regulation function is provided, pressure stability is often difficult to guarantee in actual use. Utility Model Content

[0003] Therefore, it is necessary to provide a variable pressure transmission structure and coffee machine to address the problems of the complex structure and cumbersome method of adjusting pressure in existing coffee machines.

[0004] A variable pressure transmission structure includes: a pressure regulating housing, the pressure regulating housing having an inlet channel and an outlet channel, the pressure regulating housing having a pressure regulating chamber, the outlet channel communicating with the pressure regulating chamber; a piston assembly, the piston assembly being disposed on the pressure regulating housing and located within the pressure regulating chamber, the piston assembly being movable relative to the pressure regulating housing, the piston assembly having at least a first position and a second position when moving relative to the pressure regulating housing, the piston assembly being in the first position and closing the inlet channel, the piston assembly being in the second position and communicating with the pressure regulating chamber; and pressure regulation. The pressure regulating assembly is disposed on the pressure regulating housing, a portion of the pressure regulating assembly extends into the pressure regulating chamber, and the portion of the pressure regulating assembly extending into the pressure regulating chamber abuts against the piston assembly. The pressure regulating assembly has at least a first regulating state and a second regulating state. When the pressure regulating assembly is in the first regulating state, the pressure regulating assembly applies a force F1 toward the liquid inlet channel to the piston assembly. When the pressure regulating assembly is in the second regulating state, the pressure regulating assembly applies a force F2 toward the liquid inlet channel to the piston assembly, wherein F2 is greater than F1.

[0005] The first aspect of this application discloses a variable pressure transmission structure. By changing the adjustment state of the pressure regulating component, different forces, such as F1 and F2, are applied to the piston assembly, resulting in different pressures of water entering the pressure regulating chamber, thereby achieving pressure regulation. The pressure regulating component has a relatively simple structure, which can effectively reduce manufacturing costs. Moreover, the pressure regulation method is simple and controllable, and highly practical. This design allows users to precisely adjust the pressure F value acting on the piston assembly. Different F values ​​correspond to different water pressures, thereby achieving dynamic control of the water pressure to obtain the best coffee brewing effect, resulting in a good user experience. Furthermore, once the desired pressure is set, it ensures that the product maintains a relatively stable water pressure throughout the brewing process. Precise water pressure control helps to guarantee the flavor and quality of the coffee.

[0006] In one embodiment, the pressure regulating component is rotatable relative to the pressure regulating housing. The pressure regulating component can rotate at least a first angle and a second angle relative to the pressure regulating housing. When the pressure regulating component rotates to the first angle, it is in a first regulating state; when the pressure regulating component rotates to the second angle, it is in a second regulating state. Because the pressure regulating component can rotate relative to the pressure regulating housing, and each rotation directly applies a different pressure value to the piston assembly, the outlet water pressure can be precisely adjusted. Users can easily change the water pressure simply by rotating the pressure regulating component; the entire process requires no complicated steps or multiple selections, making operation extremely simple.

[0007] In one embodiment, the liquid inlet channel includes a first channel and a second channel, which are staggered with the first channel and communicate with it. When the piston assembly is in the first position, it closes the second channel; when the piston assembly is in the second position, the second channel communicates with the pressure regulating chamber. The pressure regulating component applies a force to the piston assembly toward the second channel. The staggered arrangement of the second and first channels results in a more rational design, avoids excessive pressure fluctuations, and improves the stability and reliability of water pressure regulation.

[0008] In one embodiment, the pressure regulating assembly includes a movable plug, a first elastic element, and a drive assembly. The movable plug is disposed on the pressure regulating housing and is rotatable relative to the pressure regulating housing. The movable plug can rotate relative to the pressure regulating housing by at least a first angle and a second angle. The two ends of the first elastic element abut against the movable plug and the piston assembly, respectively. When the movable plug rotates by the first angle, the first elastic element applies a force F1 towards the inlet channel to the piston assembly. When the movable plug rotates by the second angle, the first elastic element applies a force F2 towards the inlet channel to the piston assembly. The drive assembly is drively connected to the movable plug and can drive the movable plug to rotate relative to the pressure regulating housing. Because the two ends of the first elastic element abut against the movable plug and the piston assembly, the compression of the first elastic element varies with each rotation of the movable plug, resulting in different forces exerted by the first elastic element on the piston assembly. This alters the adjusted water pressure, making water pressure regulation simpler and more precise. Moreover, since the compression of the first elastic element is proportional to the force applied, even a slight change in the angle of the movable plug can cause a precise adjustment of the pressure value, meeting the needs of professional-grade coffee making.

[0009] In one embodiment, the movable plug includes a connecting rod, a threaded rod, and a movable part. The pressure regulating housing has a through hole, and the threaded rod is disposed on the pressure regulating housing and located at the through hole. The connecting rod and the movable part are both disposed on the threaded rod, with the connecting rod and the movable part located at opposite ends of the threaded rod. The connecting rod is connected to the drive assembly. The movable part has a groove at one end facing the piston assembly, and the first elastic element abuts against the groove wall. Precise linear displacement can be achieved by rotating the threaded rod, enabling fine-tuned angular changes in the movable plug, thereby achieving precise pressure adjustment. The drive assembly effectively transmits power to the movable plug, achieving precise angular changes in the movable plug.

[0010] In one embodiment, a first thread is formed on the outer side of the movable plug, and a second thread is formed on the inner side of the pressure regulating housing; the first thread and the second thread are adapted to each other. This adaptation of the first and second threads enables precise linear displacement, ensuring that the movement distance of the movable plug is controllable and highly reliable with each rotation.

[0011] In one embodiment, the drive assembly includes a first power source assembly, a transmission rod, a first gear, and a second gear. The second gear is kinetically connected to the movable plug and can drive the movable plug to rotate relative to the pressure regulating housing. The first gear and the second gear are meshed together. The transmission rod is connected to both the first power source assembly and the first gear. The meshing of the first and second gears improves the rotational stability of the movable plug. Furthermore, by adjusting the gear ratio of the first and second gears, different transmission ratios can be achieved, thereby precisely controlling the rotation angle of the movable plug. The first power source assembly drives the first and second gears to rotate. The first power source assembly can be a motor, a manual crank, or other types of drive devices, allowing the user to select a suitable power source based on actual needs.

[0012] In one embodiment, the first power source assembly includes a support base, a limiting member, a contact rod, and a handle assembly. The support base and the limiting member are both mounted on the transmission rod. Multiple protrusions are formed on the limiting member and are spaced apart circumferentially along the limiting member, forming a fitting space between adjacent protrusions. The contact rod is mounted on the support base and can enter or exit the fitting space. The handle assembly is mounted on the limiting member and / or the transmission rod, and the handle assembly, the limiting member, and the transmission rod can rotate together relative to the support base. By providing multiple protrusions and corresponding fitting spaces on the limiting member, the handle assembly can engage with different fitting spaces, thereby achieving various pressure adjustments. This design allows the user to experience distinct phased changes during adjustment, receiving clear feedback each time the handle assembly is rotated, improving the feel and enhancing the comfort and accuracy of operation.

[0013] In one embodiment, a second elastic element is further included, with its two ends abutting against the contact rod and the support base, respectively. Because the two ends of the second elastic element abut against the contact rod and the support base, the contact rod, which pops out from the previous fitting space as the handle assembly and the limiting member rotate together, can automatically engage with the next fitting space under the force of the second elastic element.

[0014] In one embodiment, the support base has a mounting groove, and the contact rod is disposed on the support base and located within the mounting groove. The mounting groove provides a clear and fixed limiting position for the contact rod, ensuring that the contact rod will not shift or wobble during use.

[0015] In one embodiment, the limiting member engages with the handle assembly. This engagement between the limiting member and the handle assembly provides a simple and reliable connection.

[0016] In one embodiment, the pressure regulating housing includes a pressure regulating housing body, a liquid inlet, and a liquid outlet. The pressure regulating housing body is disposed on the pressure regulating assembly and has the pressure regulating chamber. Both the liquid inlet and the liquid outlet are disposed on the pressure regulating housing body. The liquid inlet has the liquid inlet channel, and the liquid outlet has the liquid outlet channel. The arrangement of the pressure regulating housing body, the liquid inlet, and the liquid outlet provides a stable basis for pressure regulation, ensuring water pressure regulation.

[0017] In one embodiment, a first seal is further included, disposed on the pressure regulating housing body and / or the liquid inlet. The first seal is located between the pressure regulating housing body and the liquid inlet, and is used to seal the gap between the pressure regulating housing body and the liquid inlet. The first seal effectively seals the gap between the pressure regulating housing body and the liquid inlet, preventing water leakage from this gap. This design ensures the normal operation of the pressure regulating function.

[0018] In one embodiment, a second seal is further included, disposed on the pressure regulating housing body and / or the liquid outlet, located between the pressure regulating housing body and the liquid outlet, and used to seal the gap between the pressure regulating housing body and the liquid outlet. The second seal effectively reduces the risk of leakage at the connection between the pressure regulating housing body and the liquid outlet.

[0019] In one embodiment, a third seal is further included, disposed on the pressure regulating housing body and / or the pressure regulating assembly. The third seal is located between the pressure regulating housing body and the pressure regulating assembly and seals any gap between them. The third seal ensures that there is no leakage at the connection between the pressure regulating housing body and the pressure regulating assembly. This design effectively improves the overall sealing performance of the system, preventing system failure or performance degradation due to leakage at any point.

[0020] In one embodiment, the drive assembly includes a second power source assembly, a worm gear, and a worm wheel. The worm wheel is driveably connected to the movable plug, and the second power source assembly, the worm gear, and the worm wheel are sequentially driveably connected. The gear profile design of the worm gear and worm wheel allows for precise control of the transmission ratio, ensuring the stability of output speed and torque. Furthermore, the worm gear and worm wheel have a self-locking function, meaning that the worm wheel can maintain its current position when power is lost, increasing the stability of pressure adjustment.

[0021] In one embodiment, the drive assembly includes a third power source assembly, a rack, and a third gear. The third gear is driven by the movable plug, and the third power source assembly, the rack, and the third gear are sequentially driven. The combination of the rack and gear enables efficient power transmission and reduces energy loss. By designing a suitable gear ratio, precise speed and position control can be achieved.

[0022] A coffee machine includes: the aforementioned variable transmission structure.

[0023] The second aspect of this application discloses a coffee machine in which the pressure regulating component in the aforementioned variable pressure transmission structure can precisely regulate the water pressure entering the pressure regulating chamber, ensuring optimal coffee extraction. Furthermore, the handle assembly allows users to precisely adjust the pressure simply by operating the handle assembly. This design reduces operational complexity and makes the coffee machine more convenient to use. Attached Figure Description

[0024] Figure 1 This is a first perspective view of the transformer transmission structure;

[0025] Figure 2 This is a second perspective view of the transformer transmission structure;

[0026] Figure 3 This is a cross-sectional view of the transformer transmission structure;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is an exploded view of the transformer transmission structure;

[0029] Figure 6 A three-dimensional view of the first power source component;

[0030] Figure 7 This is a cross-sectional view of the first power source assembly;

[0031] Figure 8 This is the first exploded view of the first power source component;

[0032] Figure 9 This is a second exploded view of the first power source assembly;

[0033] Figure 10 A three-dimensional view of the limiting component;

[0034] Figure 11 This is a three-dimensional view of the transmission rod, the first gear, and the second gear;

[0035] Figure 12 A 3D diagram of the movable end cap.

[0036] The correspondence between the reference numerals and the component names is as follows:

[0037] 1. Pressure regulating housing, 11. Pressure regulating housing body, 12. Liquid inlet, 13. Liquid outlet, 101. Liquid inlet channel, 1011. First channel, 1012. Second channel, 102. Pressure regulating chamber, 103. Liquid outlet channel, 104. Perforation.

[0038] 2 piston assemblies;

[0039] 3 Pressure regulating assembly, 31 Movable plug, 311 Connecting rod, 312 Threaded rod, 313 Movable part, 32 First elastic element, 33 Drive assembly, 331 First power source assembly, 3311 Support base, 3312 Limiting element, 33121 Protrusion, 3313 Contact rod, 3314 Handle assembly, 3315 Second elastic element, 332 Transmission rod, 333 First gear, 334 Second gear, 301 Adaptation space, 302 Mounting slot, 303 Groove;

[0040] 4. First seal;

[0041] 5. Second seal;

[0042] 6. Third seal. Detailed Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] Example 1

[0046] like Figure 1-3 and Figure 5As shown, this embodiment discloses a variable pressure transmission structure, including: a pressure regulating housing 1, the pressure regulating housing 1 having an inlet channel 101 and an outlet channel 103, the pressure regulating housing 1 having a pressure regulating chamber 102, the outlet channel 103 communicating with the pressure regulating chamber 102; and a piston assembly 2, the piston assembly 2 being disposed on the pressure regulating housing 1 and located within the pressure regulating chamber 102, the piston assembly 2 being movable relative to the pressure regulating housing 1, the piston assembly 2 having at least a first position and a second position when moving relative to the pressure regulating housing 1, the piston assembly 2 being in the first position and closing the inlet channel 101, and the piston assembly 2 being in the second position and closing the inlet channel 101 and the pressure regulating chamber 102. The pressure chamber 102 is connected; a pressure regulating component 3 is disposed on the pressure regulating housing 1, a portion of the pressure regulating component 3 extends into the pressure regulating chamber 102, and the portion of the pressure regulating component 3 extending into the pressure regulating chamber 102 abuts against the piston assembly 2. The pressure regulating component 3 has at least a first regulating state and a second regulating state. When the pressure regulating component 3 is in the first regulating state, the pressure regulating component 3 applies a force F1 toward the liquid inlet channel 101 to the piston assembly 2. When the pressure regulating component 3 is in the second regulating state, the pressure regulating component 3 applies a force F2 toward the liquid inlet channel 101 to the piston assembly 2, and the force F2 is greater than the force F1.

[0047] The first aspect of this application discloses a variable pressure transmission structure. By changing the adjustment state of the pressure regulating component 3, different forces, such as F1 and F2, are applied to the piston component 2, resulting in different pressures of water flowing into the pressure regulating chamber 102, thereby achieving pressure regulation. The pressure regulating component 3 has a relatively simple structure, which can effectively reduce manufacturing costs. Moreover, the pressure regulation method is simple and controllable, and highly practical. This design allows users to precisely adjust the pressure F value acting on the piston component 2. Different F values ​​correspond to different water pressures, thereby achieving dynamic control of the water pressure to obtain the best coffee brewing effect, resulting in a good user experience. Furthermore, once the required pressure is set, it can ensure that the product maintains a relatively stable water pressure throughout the brewing process. Precise water pressure control helps to ensure the flavor and quality of the coffee.

[0048] like Figure 1-3As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the pressure regulating component 3 is rotatable relative to the pressure regulating housing 1; the pressure regulating component 3 is rotatable relative to the pressure regulating housing 1 by at least a first angle and a second angle; when the pressure regulating component 3 rotates by the first angle, it is in the first regulating state; and when the pressure regulating component 3 rotates by the second angle, it is in the second regulating state. Because the pressure regulating component 3 can rotate relative to the pressure regulating housing 1, and each rotation of the pressure regulating component 3 directly applies a different pressure value to the piston assembly 2, the outlet water pressure can be precisely adjusted. Users only need to rotate the pressure regulating component 3 to easily change the water pressure; the entire process requires no complicated steps or multiple selections, making operation extremely simple.

[0049] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the liquid inlet channel 101 includes a first channel 1011 and a second channel 1012, the second channel 1012 and the first channel 1011 are alternately arranged, the second channel 1012 is connected to the first channel 1011, when the piston assembly 2 is in the first position, the piston assembly 2 closes the second channel 1012, when the piston assembly 2 is in the second position, the second channel 1012 is connected to the pressure regulating chamber 102, and the pressure regulating assembly 3 applies a force to the piston assembly 2 toward the second channel 1012. By alternately arranging the second channel 1012 and the first channel 1011, the design is more reasonable, avoiding excessive pressure instantaneously, and improving the stability and reliability of water pressure regulation.

[0050] like Figure 3As shown, in addition to the features of the above embodiments, this embodiment further defines that: the pressure regulating assembly 3 includes a movable plug 31, a first elastic element 32, and a driving assembly 33. The movable plug 31 is disposed on the pressure regulating housing 1 and is rotatable relative to the pressure regulating housing 1. The movable plug 31 is rotatable relative to the pressure regulating housing 1 by at least a first angle and a second angle. The two ends of the first elastic element 32 abut against the movable plug 31 and the piston assembly 2, respectively. When the movable plug 31 rotates by the first angle, the first elastic element 32 applies a force F1 toward the liquid inlet channel 101 to the piston assembly 2. When the movable plug 31 rotates by the second angle, the first elastic element 32 applies a force F2 toward the liquid inlet channel 101 to the piston assembly 2. The driving assembly 33 is connected to the movable plug 31 in a transmission manner and is capable of driving the movable plug 31 to rotate relative to the pressure regulating housing 1. With the first elastic element 32 abutting against the movable plug 31 and the piston assembly 2 at its two ends respectively, the compression of the first elastic element 32 varies with each rotation of the movable plug 31, resulting in different forces exerted by the first elastic element 32 on the piston assembly 2. This, in turn, changes the water pressure, making water pressure adjustment simpler and more precise. Furthermore, since the compression of the first elastic element 32 is proportional to the force exerted, even slight changes in the angle of the movable plug 31 can cause precise adjustments to the pressure, meeting the needs of professional-grade coffee brewing.

[0051] like Figure 3 and Figure 12 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the movable plug 31 includes a connecting rod 311, a threaded rod 312, and a movable part 313; the pressure regulating housing 1 has a through hole 104; the threaded rod 312 is disposed on the pressure regulating housing 1 and located at the through hole 104; both the connecting rod 311 and the movable part 313 are disposed on the threaded rod 312, and the connecting rod 311 and the movable part 313 are respectively located at both ends of the threaded rod 312; the connecting rod 311 is connected to the drive assembly 33; the movable part 313 has a groove 303 at one end facing the piston assembly 2; and the first elastic member 32 abuts against the groove wall of the groove 303. Precise linear displacement can be achieved by rotating the threaded rod 312, realizing fine angle changes of the movable plug 31, thereby achieving fine adjustment of pressure. The drive assembly 33 can effectively transmit power to the movable plug 31, realizing precise angle changes of the movable plug 31.

[0052] like Figure 3 and Figure 12As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a first thread is formed on the outer side of the movable plug 31, and a second thread is formed on the inner side of the pressure regulating housing 1, and the first thread and the second thread are adapted to each other. Through the adaptation of the first thread and the second thread, precise linear displacement can be achieved, ensuring that the movement distance of the movable plug 31 is controllable and highly reliable each time it is rotated.

[0053] like Figure 5 and Figure 11 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the drive assembly 33 includes a first power source assembly 331, a transmission rod 332, a first gear 333, and a second gear 334. The second gear 334 is pulsatorically connected to the movable plug 31 and can drive the movable plug 31 to rotate relative to the pressure regulating housing 1. The first gear 333 meshes with the second gear 334. The transmission rod 332 is connected to the first power source assembly 331 and the first gear 333 respectively. The meshing of the first gear 333 and the second gear 334 improves the rotational stability of the movable plug 31. Moreover, by adjusting the gear ratio of the first gear 333 and the second gear 334, different transmission ratios can be achieved, thereby precisely controlling the rotation angle of the movable plug 31. The first power source assembly 331 can drive the first gear 333 and the second gear 334 to rotate. Furthermore, the first power source assembly 331 can be a motor, a manual crank, or other types of drive devices, allowing the user to select a suitable power source according to actual needs.

[0054] like Figure 4 and Figure 6-10As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first power source assembly 331 includes a support base 3311, a limiting member 3312, a contact rod 3313, and a handle assembly 3314. The support base 3311 and the limiting member 3312 are both disposed on the transmission rod 332. A protrusion 33121 is formed on the limiting member 3312, and there are multiple protrusions 33121. The multiple protrusions 33121 are arranged along the limiting member 3312. The circumferential spacing of the two protrusions 33121 forms an adaptation space 301 between adjacent protrusions 33121. The contact rod 3313 is disposed on the support base 3311 and can enter or exit the adaptation space 301. The handle assembly 3314 is disposed on the limiting member 3312 and / or the transmission rod 332. The handle assembly 3314, the limiting member 3312, and the transmission rod 332 can rotate together relative to the support base 3311. By providing multiple protrusions 33121 and corresponding adaptation spaces 301 on the limiting member 3312, the handle assembly 3314 can be engaged in different adaptation spaces 301, thereby achieving various pressure adjustments. This design allows the user to feel obvious staged changes during adjustment, receiving clear feedback each time the handle assembly 3314 is rotated, improving the feel and enhancing the comfort and accuracy of operation.

[0055] like Figure 4 and Figure 7 As shown, in addition to the features of the above embodiments, this embodiment further includes a second elastic member 3315, the two ends of which abut against the contact rod 3313 and the support base 3311, respectively. Because the two ends of the second elastic member 3315 abut against the contact rod 3313 and the support base 3311, the contact rod 3313, which pops out from the previous fitting space 301 as the handle assembly 3314 and the limiting member 3312 rotate together, can automatically engage with the next fitting space 301 under the force of the second elastic member 3315.

[0056] like Figure 4 and Figure 7 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the support base 3311 is provided with a mounting groove 302, and the contact rod 3313 is disposed on the support base 3311 and located within the mounting groove 302. The mounting groove 302 provides a clear and fixed limiting position for the contact rod 3313, ensuring that the contact rod 3313 will not deviate or shake during use.

[0057] like Figure 7As shown, in addition to the features of the above embodiments, this embodiment further specifies that the limiting member 3312 is engaged with the handle assembly 3314. The engagement between the limiting member 3312 and the handle assembly 3314 provides a simple and reliable connection.

[0058] like Figure 3 and Figure 5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the pressure regulating housing 1 includes a pressure regulating housing body 11, a liquid inlet 12, and a liquid outlet 13. The pressure regulating housing body 11 is disposed on the pressure regulating assembly 3, and the pressure regulating housing body 11 is provided with the pressure regulating chamber 102. The liquid inlet 12 and the liquid outlet 13 are both disposed on the pressure regulating housing body 11. The liquid inlet 12 is provided with the liquid inlet channel 101, and the liquid outlet 13 is provided with the liquid outlet channel 103. The arrangement of the pressure regulating housing body 11, the liquid inlet 12, and the liquid outlet 13 provides a stable pressure regulation basis, thereby ensuring water pressure regulation.

[0059] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further includes a first sealing member 4, which is disposed on the pressure regulating housing body 11 and / or the liquid inlet 12. The first sealing member 4 is located between the pressure regulating housing body 11 and the liquid inlet 12, and is used to seal the gap between the pressure regulating housing body 11 and the liquid inlet 12. The first sealing member 4 effectively seals the gap between the pressure regulating housing body 11 and the liquid inlet 12, preventing water leakage from the gap. This design ensures the normal operation of the pressure regulating function.

[0060] like Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further includes a second seal 5, which is disposed on the pressure regulating housing body 11 and / or the liquid outlet 13. The second seal 5 is located between the pressure regulating housing body 11 and the liquid outlet 13, and is used to seal the gap between the pressure regulating housing body 11 and the liquid outlet 13. The provision of the second seal 5 effectively reduces the leakage risk at the connection between the pressure regulating housing body 11 and the liquid outlet 13.

[0061] like Figure 3As shown, in addition to the features of the above embodiments, this embodiment further includes a third seal 6, which is disposed on the pressure regulating housing 11 and / or the pressure regulating assembly 3. The third seal 6 is located between the pressure regulating housing 11 and the pressure regulating assembly 3, and is used to seal the gap between the pressure regulating housing 11 and the pressure regulating assembly 3. The third seal 6 ensures that there is no leakage at the connection between the pressure regulating housing 11 and the pressure regulating assembly 3. This design effectively improves the overall sealing performance of the system and avoids system failure or performance degradation due to leakage at any point.

[0062] Example 2

[0063] The drive assembly 33 includes a second power source assembly, a worm gear, and a worm wheel. The worm wheel is driveably connected to the movable plug 31, and the second power source assembly, the worm gear, and the worm wheel are sequentially driveably connected. The gear tooth design of the worm gear and worm wheel allows for precise control of the transmission ratio, ensuring the stability of output speed and torque. Furthermore, the worm gear and worm wheel have a self-locking function, meaning that the worm wheel can maintain its current position when power is lost, increasing the stability of pressure adjustment.

[0064] Example 3

[0065] The drive assembly 33 includes a third power source assembly, a rack, and a third gear. The third gear is drively connected to the movable plug 31, and the third power source assembly, the rack, and the third gear are sequentially drively connected. The combination of the rack and gear enables efficient power transmission and reduces energy loss. By designing a suitable gear ratio, precise speed and position control can be achieved.

[0066] Example 4

[0067] This embodiment discloses a coffee machine, including the aforementioned variable voltage transmission structure.

[0068] The second aspect of this application discloses a coffee machine in which the pressure regulating component 3 in the aforementioned variable pressure transmission structure can precisely regulate the water pressure entering the pressure regulating chamber 102, ensuring optimal coffee extraction. Furthermore, the handle assembly 3314 allows the user to precisely adjust the pressure simply by operating it. This design reduces operational complexity and makes the coffee machine more convenient to use.

[0069] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A variable voltage transmission structure, characterized in that, include: A pressure regulating housing (1) is provided with an inlet channel (101) and an outlet channel (103). The pressure regulating housing (1) is provided with a pressure regulating chamber (102). The outlet channel (103) is connected to the pressure regulating chamber (102). A piston assembly (2) is disposed on the pressure regulating housing (1) and located in the pressure regulating chamber (102). The piston assembly (2) is movable relative to the pressure regulating housing (1). When the piston assembly (2) moves relative to the pressure regulating housing (1), it has at least a first position and a second position. When the piston assembly (2) is in the first position, it closes the liquid inlet channel (101). When the piston assembly (2) is in the second position, the liquid inlet channel (101) communicates with the pressure regulating chamber (102). A pressure regulating assembly (3) is disposed on the pressure regulating housing (1). A portion of the pressure regulating assembly (3) extends into the pressure regulating chamber (102). The portion of the pressure regulating assembly (3) extending into the pressure regulating chamber (102) abuts against the piston assembly (2). The pressure regulating assembly (3) has at least a first regulating state and a second regulating state. When the pressure regulating assembly (3) is in the first regulating state, the pressure regulating assembly (3) applies a force F1 toward the inlet channel (101) to the piston assembly (2). When the pressure regulating assembly (3) is in the second regulating state, the pressure regulating assembly (3) applies a force F2 toward the inlet channel (101) to the piston assembly (2). The force F2 is greater than the force F1.

2. The transformer transmission structure according to claim 1, characterized in that, The pressure regulating component (3) is rotatable relative to the pressure regulating housing (1). The pressure regulating component (3) is rotatable relative to the pressure regulating housing (1) by at least a first angle and a second angle. When the pressure regulating component (3) rotates by the first angle, the pressure regulating component (3) is in the first regulating state. When the pressure regulating component (3) rotates by the second angle, the pressure regulating component (3) is in the second regulating state. And / or the liquid inlet channel (101) includes a first channel (1011) and a second channel (1012), the second channel (1012) being staggered with the first channel (1011), the second channel (1012) communicating with the first channel (1011), the piston assembly (2) closing the second channel (1012) when the piston assembly (2) is in the first position, the second channel (1012) communicating with the pressure regulating chamber (102) when the piston assembly (2) is in the second position, and the pressure regulating assembly (3) applying a force toward the second channel (1012) to the piston assembly (2).

3. The transformer transmission structure according to claim 1, characterized in that, The pressure regulating assembly (3) includes a movable plug (31), a first elastic element (32), and a drive assembly (33). The movable plug (31) is disposed on the pressure regulating housing (1) and is rotatable relative to the pressure regulating housing (1). The movable plug (31) is rotatable relative to the pressure regulating housing (1) by at least a first angle and a second angle. The two ends of the first elastic element (32) abut against the movable plug (31) and the piston assembly (2), respectively. The movable plug (31) rotates... At the first angle, the first elastic element (32) applies a force F1 to the piston assembly (2) toward the liquid inlet channel (101). When the movable plug (31) rotates to the second angle, the first elastic element (32) applies a force F2 to the piston assembly (2) toward the liquid inlet channel (101). The drive assembly (33) is connected to the movable plug (31) in a transmission manner. The drive assembly (33) can drive the movable plug (31) to rotate relative to the pressure regulating housing (1).

4. The transformer transmission structure according to claim 3, characterized in that, The movable plug (31) includes a connecting rod (311), a threaded rod (312), and a movable part (313). The pressure regulating housing (1) is provided with a through hole (104). The threaded rod (312) is disposed on the pressure regulating housing (1) and located at the through hole (104). The connecting rod (311) and the movable part (313) are both disposed on the threaded rod (312) and the connecting rod (311) and the movable part (313) are respectively located at both ends of the threaded rod (312). The connecting rod (311) is connected to the drive assembly (33). The movable part (313) is provided with a groove (303) at one end facing the piston assembly (2). The first elastic element (32) abuts against the groove wall of the groove (303). A first thread is formed on the outer side of the movable plug (31), and a second thread is formed on the inner side of the pressure regulating housing (1), wherein the first thread and the second thread are adapted to each other.

5. The transformer transmission structure according to claim 3, characterized in that, The drive assembly (33) includes a first power source assembly (331), a transmission rod (332), a first gear (333) and a second gear (334). The second gear (334) is connected to the movable plug (31) in a transmission manner. The second gear (334) can drive the movable plug (31) to rotate relative to the pressure regulating housing (1). The first gear (333) is meshed with the second gear (334). The transmission rod (332) is connected to the first power source assembly (331) and the first gear (333) respectively.

6. The transformer transmission structure according to claim 5, characterized in that, The first power source assembly (331) includes a support base (3311), a limiting member (3312), a contact rod (3313), and a handle assembly (3314). The support base (3311) and the limiting member (3312) are both disposed on the transmission rod (332). A protrusion (33121) is formed on the limiting member (3312). The number of protrusions (33121) is plurality of them, and the plurality of protrusions (33121) are spaced apart circumferentially along the limiting member (3312). Adjacent protrusions are spaced apart. The protrusions (33121) form an adaptation space (301), the contact rod (3313) is disposed on the support base (3311), the contact rod (3313) can enter or exit the adaptation space (301), the handle assembly (3314) is disposed on the limiting member (3312) and / or the transmission rod (332), the handle assembly (3314), the limiting member (3312) and the transmission rod (332) can rotate together relative to the support base (3311).

7. The transformer transmission structure according to claim 6, characterized in that, It also includes a second elastic element (3315), the two ends of which abut against the contact rod (3313) and the support base (3311), respectively; And / or the support base (3311) is provided with a mounting groove (302), and the contact rod (3313) is disposed on the support base (3311) and located in the mounting groove (302); And / or the limiting member (3312) engages with the handle assembly (3314).

8. The transformer transmission structure according to claim 3, characterized in that, The drive assembly (33) includes a second power source assembly, a worm and a worm wheel, the worm wheel being drivenly connected to the movable plug (31), and the second power source assembly, the worm and the worm wheel being drivenly connected in sequence; Alternatively, the drive assembly (33) may include a third power source assembly, a rack and a third gear, the third gear being driven by the movable plug (31), and the third power source assembly, the rack and the third gear being driven in sequence.

9. The transformer transmission structure according to claim 1, characterized in that, The pressure regulating housing (1) includes a pressure regulating housing body (11), a liquid inlet (12), and a liquid outlet (13). The pressure regulating housing body (11) is disposed on the pressure regulating assembly (3). The pressure regulating housing body (11) is provided with the pressure regulating chamber (102). The liquid inlet (12) and the liquid outlet (13) are both disposed on the pressure regulating housing body (11). The liquid inlet (12) is provided with the liquid inlet channel (101), and the liquid outlet (13) is provided with the liquid outlet channel (103).

10. A coffee machine, characterized in that, include: The transformer transmission structure as described in any one of claims 1-9.

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