Coffee machine and puncturing mechanism thereof

Abstract

The utility model relates to a coffee machine and a puncture mechanism thereof. The puncturing mechanism comprises a fixing support, a first driving device, a puncturing assembly, a rotating transmission part and a translation transmission part. The fixed support is fixedly connected with a main machine of the coffee machine. The first driving device is arranged on the fixing support and used for driving the rotating transmission part to rotate around the axis of the rotating transmission part. The rotary transmission part is movably connected with the translation transmission part and can convert the rotary motion of the rotary transmission part into the translation motion of the translation transmission part; the translation transmission part is fixedly connected with the puncturing assembly and used for driving the puncturing assembly to move relative to the fixing support so that the puncturing assembly can puncture the coffee capsule or be removed from the coffee capsule. The first driving device can automatically drive the puncturing assembly to move, and manual operation is not needed; and moreover, the rotary motion of the rotary transmission part is converted into the translation motion of the translation transmission part so as to drive the puncturing assembly to translate, and compared with a lever structure, the occupied space is small during motion, and miniaturization of the coffee machine is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a coffee machine and its puncture mechanism. Background Technology

[0002] Coffee machines can automatically control the entire coffee brewing process, including grinding, tamping, filling, brewing, and removing residue, making it convenient for people to enjoy coffee and thus increasingly entering people's lives.

[0003] A coffee machine includes a capsule holder and a piercing mechanism. Coffee capsules are placed in the capsule holder. When the coffee machine is in use, the piercing mechanism is moved, causing a piercing needle on the mechanism to pierce the coffee capsule. Simultaneously, a piercing needle on the capsule holder also pierces the capsule, allowing hot water to enter the capsule through the piercing needle on the mechanism. The coffee is then extracted and flows out through the piercing needle on the capsule holder.

[0004] Some existing coffee machines use a lever-driven mechanism connected to the piercing component. Users need to manually operate this mechanism, using leverage to move the piercing component and insert it into the coffee capsule. This is inconvenient for manual operation, and the lever-driven mechanism occupies a significant amount of space during operation, hindering the miniaturization of the coffee machine. Utility Model Content

[0005] Therefore, it is necessary to address the issue that some existing coffee machines use a lever-driven structure to connect with the piercing component. Users need to manually operate this lever-driven structure, using the lever principle to move the piercing component and allow it to pierce the coffee capsule. This is inconvenient for manual operation and also takes up considerable space during operation, hindering the miniaturization of the coffee machine. Therefore, a coffee machine and its piercing mechanism are provided.

[0006] One embodiment of this application provides a puncture mechanism for a coffee machine, including: a fixed bracket, a first driving device, a puncture component, a rotary transmission component, and a translational transmission component;

[0007] The fixed bracket is fixedly connected to the main unit of the coffee machine;

[0008] The first driving device is mounted on the fixed bracket and is used to drive the rotary transmission component to rotate around its own axis;

[0009] The rotary transmission component is movably connected to the translational transmission component and can convert its own rotational motion into the translational motion of the translational transmission component.

[0010] The translational transmission component is fixedly connected to the piercing assembly to drive the piercing assembly to move relative to the fixed bracket, so that the piercing assembly can pierce the coffee capsule or be removed from the coffee capsule.

[0011] In one embodiment, the rotary transmission member and the translational transmission member, one having an internal thread and the other having an external thread, wherein the internal thread and the external thread engage.

[0012] In one embodiment, the fixed bracket is provided with a guide structure, and the puncture component is movably engaged with the guide structure.

[0013] In one embodiment, the puncture mechanism further includes a gear assembly comprising one or more meshing gears, one of which is coaxially connected to the rotary transmission member, and the first driving device is used to drive any one of the gears in the gear assembly to rotate.

[0014] In one embodiment, the gear assembly is detachably connected to the rotary transmission member; the puncture mechanism further includes a manual rotating member for connection to the rotary transmission member.

[0015] In one embodiment, the puncture mechanism further includes a puncture sensor, which can trigger the puncture sensor to generate a sensing signal when the puncture component moves to the puncture position, wherein the puncture component punctures the coffee capsule at the puncture position.

[0016] In one embodiment, the puncture mechanism further includes a retraction sensor that can trigger a sensing signal when the puncture component moves to the retraction position; wherein the puncture component is removed from the coffee capsule when it is in the retraction position.

[0017] In one embodiment, the puncturing assembly includes a puncturing sleeve and a water channel frame connected to the translational transmission component. The puncturing sleeve has a first puncturing needle at one end near the coffee capsule and an opening at the other end. The first puncturing needle communicates with the inner cavity of the puncturing sleeve.

[0018] The water channel is installed inside the puncture sleeve, and the outer circumferential surface of the water channel is sealed to the inner circumferential surface of the puncture sleeve; one end of the water channel inside the water channel is connected to the inner cavity of the puncture sleeve, and the other end is the water inlet of the puncture assembly.

[0019] In one embodiment, the water channel frame extends out of the opening, and the portion of the water channel frame extending out of the opening is provided with a first connecting portion, the first connecting portion protruding from the side wall of the piercing sleeve;

[0020] The piercing sleeve is provided with a second connecting part, which protrudes from the side wall of the piercing sleeve and is fixedly connected to the first connecting part.

[0021] In one embodiment, the first connecting portion is provided with a puncture sensing position.

[0022] In one embodiment, the puncture mechanism further includes a puncture sensor. When the puncture component moves to the puncture position, the puncture sensor can trigger the puncture sensor to generate a sensing signal, wherein the puncture component punctures the coffee capsule at the puncture position.

[0023] In one embodiment, the puncture mechanism further includes a retraction sensor, which triggers the retraction sensor to generate a sensing signal when the puncture component moves to the retraction position; wherein the puncture component is removed from the coffee capsule when it is in the retraction position.

[0024] A coffee machine includes a main unit and a puncture mechanism as described in any of the above embodiments, wherein the fixed bracket is disposed on the main unit.

[0025] When the aforementioned coffee machine and its piercing mechanism are in use, the first driving device can drive the rotary transmission component to rotate around its own axis, causing the rotary transmission component to convert its rotational motion into the translational motion of the translational transmission component. This translational transmission component then drives the piercing component, which is fixedly connected to it, to move synchronously. Consequently, the piercing component moves relative to the fixed support along a first direction to pierce the coffee capsule; or, after the coffee capsule has been extracted, the piercing component moves relative to the fixed support along the first direction to remove it from the coffee capsule. Thus, the first driving device can automatically drive the piercing component to move without manual operation. Furthermore, by converting the rotational motion of the rotary transmission component into the translational motion of the translational transmission component to drive the piercing component to move, the space occupied is smaller compared to the lever structure, which is beneficial for the miniaturization of the coffee machine. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the puncture mechanism of a coffee machine according to one embodiment.

[0027] Figure 2 for Figure 1 The structure explodes diagram.

[0028] Figure 3 for Figure 1 A cross-sectional view of the piercing component of the structure shown when it pierces a coffee capsule.

[0029] Figure 4 for Figure 1 A cross-sectional view of the puncture component of the structure shown when removing a coffee capsule.

[0030] Figure 5 This is a schematic diagram of a puncture mechanism when a manually rotating component is connected to a rotary transmission component, according to one embodiment.

[0031] Figure 6This is a cross-sectional view of a puncture assembly according to one embodiment.

[0032] Figure 7 for Figure 6 An exploded view of the puncture component.

[0033] 100. Host computer;

[0034] 200. Fixed bracket; 201. Guide structure; 210. Mounting bracket;

[0035] 320. Puncture assembly; 321. First puncture needle; 3211. Puncture sealing ring; 322. Puncture sensor; 323. Retracting sensor; 324. Puncture sleeve; 3241. Second connecting part; 3242. Sleeve sealing ring; 325. Water channel frame; 3251. First extension part; 3252. First connecting part; 330. Extraction cup; 340. Capsule holder;

[0036] 410. Motor; 461. Rotary transmission component; 462. Translational transmission component; 470. Transmission bracket cover; 471. First gear; 472. Second gear; 480. Manual rotating component. Detailed Implementation

[0037] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] One embodiment of this application provides a puncture mechanism (hereinafter referred to as the puncture mechanism) for a coffee machine. Combined with... Figure 1 and Figure 2 The puncture mechanism includes: a fixed bracket 200, a first drive device, a puncture component 320, a rotary transmission component 461, and a translational transmission component 462. The fixed bracket 200 is fixedly connected to the main unit 100 of the coffee machine.

[0044] The first driving device is mounted on the fixed bracket 200 and is used to drive the rotary transmission member 461 to rotate around its own axis. The rotary transmission member 461 is movably connected to the translational transmission member 462 and can convert its own rotational motion into the translational motion of the translational transmission member 462. The translational transmission member 462 is fixedly connected to the piercing assembly 320 and is used to drive the piercing assembly 320 to move relative to the fixed bracket 200, so that the piercing assembly 320 pierces or is removed from the coffee capsule along a first direction. The first direction is the direction in which the piercing assembly 320 pierces or is removed from the coffee capsule.

[0045] When the aforementioned piercing mechanism is used in a coffee machine, the first driving device can drive the rotary transmission component 461 to rotate around its own axis, thereby converting the rotary motion of the rotary transmission component 461 into the translational motion of the translational transmission component 462. The translational transmission component 462 then drives the piercing component 320, which is fixedly connected to it, to translate synchronously. The piercing component 320 then moves relative to the fixed support 200 along the first direction to pierce the coffee capsule; or, after the coffee capsule has been extracted, the piercing component 320 moves relative to the fixed support 200 along the first direction to remove it from the coffee capsule. Thus, the first driving device can automatically drive the piercing component 320 to move without manual operation. Moreover, by converting the rotary motion of the rotary transmission component into the translational motion of the translational transmission component 462 to drive the translation of the piercing component 320, the space occupied is smaller compared to the lever structure, which is beneficial for the miniaturization of the coffee machine.

[0046] refer to Figures 2 to 4 The coffee machine includes a mounting bracket 210. The mounting bracket 210 is located on one side of the fixed bracket 200 along a first direction. The mounting bracket 210 is used to mount the extraction cup 330. A capsule holder 340 is located within the extraction cup 330. Coffee capsules are located within the capsule holder 340.

[0047] In one embodiment, the rotary transmission member 461 and the translational transmission member 462, one having an internal thread and the other having an external thread, with the internal and external threads engaging. Thus, the translational transmission member 462 can be driven to translate via threaded transmission.

[0048] In this embodiment, the rotary transmission member 461 has external threads. The translational transmission member 462 has internal threads.

[0049] In other embodiments, the rotary transmission element may have internal threads, while the translational transmission element may have external threads.

[0050] refer to Figure 2 In one embodiment, the fixed bracket 200 is provided with a guide structure 201, and the puncture component 320 is movablely engaged with the guide structure 201 along a first direction. Through the guidance of the guide structure 201, the movement direction of the puncture component 320 can be ensured to be accurate and stable.

[0051] In particular, when the rotary transmission component 461 and the translational transmission component 462 are threaded transmissions, when the rotary transmission component 461 rotates, since the puncture component 320 can only move in the first direction, the translational transmission component 462 connected to the puncture component 320 is limited to moving in the first direction, thereby effectively ensuring that the translational transmission component 462 performs translational motion under the action of threaded transmission.

[0052] refer to Figure 2 In one embodiment, the guide structure 201 is a guide groove extending along a first direction.

[0053] In other embodiments, the guiding structure may also be a guiding part, with a guiding groove provided on the puncture component 320 to cooperate with the guiding part, thereby also guiding the puncture component 320 to move along the first direction.

[0054] refer to Figure 1 In one embodiment, the first drive device includes a motor 410.

[0055] refer to Figure 1 and Figure 2 In one embodiment, the puncture mechanism further includes a gear assembly, which includes one or more meshing gears. One of the gears in the gear assembly is coaxially connected to the rotary transmission member 461. The first drive device is used to drive any gear in the gear assembly to rotate.

[0056] exist Figure 1 and Figure 2 In the illustrated embodiment, the gear assembly includes a first gear 471 and a second gear 472 that mesh with each other. The second gear 472 is coaxially connected to a rotary transmission member 461. A first drive device is used to drive the first gear 471 to rotate, thereby driving the first gear 472 and the rotary transmission member 461 to rotate.

[0057] refer to Figure 1 In one embodiment, the puncture mechanism further includes a transmission support cover 470, which is fixed on the fixed support 200 and located on the side of the puncture assembly 320 facing away from the coffee capsule. The rotation transmission member 461 is rotatably connected to the transmission support cover 470.

[0058] refer to Figures 2 to 4 In one embodiment, the puncture mechanism further includes a puncture sensor 322, which triggers the puncture sensor 322 to generate a sensing signal when the puncture component 320 moves to the puncture position. The puncture component 320 punctures the coffee capsule at the puncture position. Thus, the sensing signal from the puncture sensor 322 promptly alerts the user that the puncture component 320 has punctured the coffee capsule.

[0059] refer to Figures 2 to 4In one embodiment, the puncture mechanism further includes a retraction sensor 323, which triggers the puncture component 320 to generate a sensing signal when the puncture component 320 moves to the retraction position. The puncture component 320 is removed from the coffee capsule when it is in the retraction position. Thus, the sensing signal from the retraction sensor 323 promptly alerts the user that the puncture component 320 has removed the coffee capsule.

[0060] The sensor 322 can be punctured, but is not limited to, a micro switch, reed switch, tactile switch, Hall effect switch, etc. The sensor 323 can be retracted, but is not limited to, a micro switch, reed switch, tactile switch, Hall effect switch, etc.

[0061] Specifically, the coffee machine may include a display device that shows the sensing results of the puncture sensor 322 and the retraction sensor 323, thereby providing convenient reminders to the user. The coffee machine may also include a puncture warning device. When the puncture component 320 is in the puncture position, the puncture sensor 322 triggers the puncture warning device to emit a puncture signal. When the puncture component 320 is in the retraction position, the retraction sensor 323 triggers the puncture warning device to emit a retraction signal. Thus, the user can also be notified via a puncture warning device. The puncture warning device may be, for example, an audible warning device, a visual warning device, or a combined audible and visual warning device.

[0062] refer to Figures 2 to 4 In one embodiment, the puncture sensor 322 is disposed on the fixed bracket 200, and the retraction sensor 323 is disposed on the transmission bracket cover 470.

[0063] refer to Figure 5 In one embodiment, the gear assembly is detachably connected to the rotary transmission member 461. The puncture mechanism includes a manually rotating member 480, which is connected to the rotary transmission member 461. Specifically, when the first drive device malfunctions or experiences a power outage, the gear assembly can be detached from the rotary transmission member 461, allowing the manually rotating member 480 to be connected to the rotary transmission member 461. This enables the rotary transmission member 461 to be manually rotated to move the puncture component 320.

[0064] refer to Figures 6 to 7 In one embodiment, the puncture assembly 320 includes a puncture sleeve 324 and a water channel frame 325 connected to the translational transmission member 462. The puncture sleeve 324 has a first puncture needle 321 at one end near the coffee capsule and an opening at the other end. The first puncture needle 321 communicates with the inner cavity of the puncture sleeve 324.

[0065] The water channel frame 325 can enter the piercing sleeve 324 through the opening, and the outer peripheral surface of the water channel frame 325 is sealed to the inner peripheral surface of the piercing sleeve 324, thereby ensuring the sealing between the water channel frame 325 and the piercing sleeve 324. One end of the water channel in the water channel frame 325 is connected to the inner cavity of the piercing sleeve 324, and the other end is the water inlet of the piercing assembly 320.

[0066] When the piercing component 320 pierces the coffee capsule, specifically the first piercing needle 321 pierces the coffee capsule. After the first piercing needle 321 pierces the coffee capsule, hot water can be introduced into the water inlet of the piercing component 320. The hot water flows into the water channel of the water channel frame 325, thereby entering the inner cavity of the piercing sleeve 324, and then flows out from the first piercing needle 321, entering the coffee capsule to extract the coffee liquid.

[0067] In one embodiment, the water channel frame 325 has a receiving cavity extending along a first direction, and the translational transmission member 462 is located within the receiving cavity and fixedly connected to the water channel frame 325. The translational transmission member 462 can be fixed relative to the receiving cavity by means of interference fit, welding, or other methods.

[0068] refer to Figures 6 to 7 In one embodiment, the water pipe bracket 325 extends out of the opening of the piercing sleeve 324, and the portion of the water pipe bracket 325 extending out of the opening is provided with a first protrusion 3251, which protrudes out of the piercing sleeve 324 in a direction perpendicular to the first direction. The water inlet of the piercing assembly 320 is located at the end of the first protrusion 3251, thereby facilitating connection with a water pipe to allow hot water to enter.

[0069] refer to Figures 6 to 7 In one embodiment, the water channel frame 325 extends out of the opening of the piercing sleeve 324. The portion of the water channel frame 325 extending out of the opening is provided with a first connecting portion 3252, which protrudes from the side wall of the piercing sleeve 324 in a direction perpendicular to the first direction. The piercing sleeve 324 is provided with a second connecting portion 3241, which protrudes from the side wall of the piercing sleeve 324 in a direction perpendicular to the first direction. The second connecting portion 3241 is located on the side of the first connecting portion 3252 along the first direction, and the two are fixedly connected, thereby facilitating the fixed connection of the water channel frame 325 and the piercing sleeve 324.

[0070] refer to Figure 3 and Figure 4 , Figure 6 and Figure 7 In one embodiment, the first connecting portion 3252 is provided with a puncture sensing position. The puncture mechanism also includes a puncture sensor 322, which triggers the puncture sensor 322 to generate a sensing signal when the puncture assembly 320 moves to the puncture position.

[0071] refer to Figure 3 and Figure 4 , Figure 6 and Figure 7 In one embodiment, the puncture mechanism further includes a retraction sensor 323. The first connecting portion 3252 is provided with a puncture sensing position. When the puncture assembly 320 moves to the retraction position, the puncture sensing position can trigger the retraction sensor 323 to generate a sensing signal.

[0072] By setting the first connecting part 3252, the water channel frame 325 and the piercing sleeve 324 can be fixedly connected through its fixed connection with the second connecting part 3241, and it is also convenient to trigger the piercing sensor 322 and the retraction sensor 323.

[0073] refer to Figure 6 and Figure 7 In one embodiment, a sleeve sealing ring 3242 is provided between the puncture sleeve 324 and the water channel frame 325.

[0074] refer to Figure 3 and Figure 4 , Figure 6 and Figure 7 In one embodiment, the first piercing needle 321 is covered with a piercing sealing ring 3211. When the first piercing needle 321 pierces the coffee capsule, the piercing sealing ring 3211 abuts against the surface of the coffee capsule to ensure a sealed fit between the first piercing needle 321 and the coffee capsule.

[0075] An embodiment of this application also provides a coffee machine, including a main unit 100 and a puncture mechanism of any of the above embodiments, with a fixing bracket 200 disposed on the main unit 100.

[0076] The main unit 100 of the coffee machine includes a water tank, control circuit, switch, etc. For details, please refer to existing technology, which will not be elaborated here.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, 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 piercing mechanism for a coffee machine, characterized in that, The puncture mechanism comprises a fixed support, a first driving device, a puncture assembly, a rotation transmission member and a translation transmission member. The fixed support is fixedly connected with a main machine of the coffee machine. The first driving device is arranged on the fixed support and is used to drive the rotation transmission member to rotate around its own axis. The rotation transmission member is movably connected with the translation transmission member and can convert the rotation movement of itself into the translation movement of the translation transmission member. The translation transmission member is fixedly connected with the puncture assembly and is used to drive the puncture assembly to move relative to the fixed support so that the puncture assembly penetrates into or is removed from the coffee capsule. One of the rotation transmission member and the translation transmission member has an internal thread, and the other has an external thread, and the internal thread is matched with the external thread.

2. The lancing mechanism of claim 1, wherein, The fixed support is provided with a guide structure, and the puncture assembly is movably matched with the guide structure.

3. The piercing mechanism of claim 1, wherein, The puncture mechanism further comprises a gear assembly, the gear assembly comprises one gear or a plurality of gears meshing with each other, one of the gears in the gear assembly is coaxially connected with the rotation transmission member, and the first driving device is used to drive any gear in the gear assembly to rotate.

4. The piercing mechanism of claim 1, wherein, The gear assembly is detachably connected with the rotation transmission member; and the puncture mechanism further comprises a manual rotating member used to be connected with the rotation transmission member.

5. The lancing mechanism of claim 4, wherein, 6. The puncture mechanism according to claim 1, wherein The puncture mechanism further comprises a puncture induction member, the puncture assembly can trigger the puncture induction member to generate an induction signal when the puncture assembly moves to a puncture position, and the puncture assembly penetrates into the coffee capsule when being at the puncture position; and / or The puncture mechanism further comprises a retraction induction member, the puncture assembly can trigger the retraction induction member to generate an induction signal when the puncture assembly moves to a retraction position, and the puncture assembly is removed from the coffee capsule when being at the retraction position.

7. The puncture mechanism according to claim 1, wherein The puncture assembly comprises a puncture sleeve and a water channel frame connected with the translation transmission member, the puncture sleeve is provided with a first puncture needle at one end close to the coffee capsule and is provided with an opening at the other end, and the first puncture needle is in communication with an inner cavity of the puncture sleeve; The water channel frame is arranged in the puncture sleeve, and an outer circumferential surface of the water channel frame is sealingly matched with an inner circumferential surface of the puncture sleeve; one end of a water channel in the water channel frame is in communication with the inner cavity of the puncture sleeve, and the other end is a water inlet of the puncture assembly.

8. The puncture mechanism according to claim 7, wherein The water channel frame extends out of the opening, and a first connecting portion of the water channel frame extending out of the opening protrudes from a side wall of the puncture sleeve; The puncture sleeve is provided with a second connecting portion protruding from the side wall of the puncture sleeve, and the second connecting portion is fixedly connected with the first connecting portion. The first connecting portion is provided with a puncture induction position.

9. The lancing mechanism of claim 8, wherein, ​ The piercing mechanism further comprises a piercing sensing member, wherein the piercing sensing member is triggered to generate a sensing signal when the piercing assembly moves to the piercing position, and wherein the piercing assembly pierces the coffee capsule when in the piercing position; and / or, The piercing mechanism further comprises a retraction sensing member, wherein the retraction sensing member is triggered to generate a sensing signal when the piercing assembly moves to the retraction position, and wherein the piercing assembly is removed from the coffee capsule when in the retraction position.

10. A coffee maker characterized in that, A coffee machine comprising a main body and a piercing mechanism as claimed in any one of claims 1 to 9, wherein the fixed support is arranged on the main body.

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