Coffee machine water conveying structure and coffee machine

Abstract

The utility model provides a coffee machine water conveying structure and a coffee machine. The water delivery structure of the coffee machine comprises a three-way joint, an external water pipe and a connecting plug, the three-way connector is provided with a water inlet port, a first water outlet connector and a second water outlet connector, and the water inlet port is communicated with the first water outlet connector and the second water outlet connector. The connecting plug comprises a rigid embedded pipe and a soft outer rubber sleeve, and the soft outer rubber sleeve is connected to the water outlet end of the rigid embedded pipe in a sleeving mode; the water outlet end of the rigid embedded pipe is located in the water inlet port, and the rigid embedded pipe abuts against the inner circumferential wall of the water inlet port through the soft outer rubber sleeve so that the soft outer rubber sleeve can be arranged between the inner circumferential wall of the water inlet port and the rigid embedded pipe in a sealed mode. The soft outer rubber sleeve can deform to abut against the inner circumferential wall of the water inlet port under the supporting effect of the rigid embedded pipe, the sealing effect is improved, meanwhile, friction between the soft outer rubber sleeve and the rigid embedded pipe can be increased, and the installation firmness is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coffee machine manufacturing, and in particular to a water supply structure of a coffee machine and a coffee machine. Background Art

[0002] As people's living standards improve, coffee has gradually become part of their daily lives. To make it more convenient to drink, people usually use coffee machines to brew coffee. However, due to the limited capacity of the coffee machine's water tank, some manufacturers have made further research and development to reduce the need to frequently add water to the coffee machine's water tank.

[0003] For example, Chinese patent document CN221060407U discloses a water inlet structure for a coffee machine, which includes a water tank water supply pipe, a water outlet pipe and a tee joint. The side of the tee joint is provided with a water tank water receiving portion and a water outlet portion respectively connected to the water tank water supply pipe and the water outlet pipe. An external water adapter is installed inside the tee joint, and several sealing rings are provided on the outside of the external water adapter. The external water adapter is connected to the external water inlet pipe.

[0004] However, the design of the water inlet structure of the coffee machine has the following problems:

[0005] The above-mentioned coffee machine water inlet structure requires the external water adapter to be inserted into the tee when connecting to an external water source. However, due to the structural setting of the external water adapter, the external water adapter is easily deformed inward during the insertion and removal process, making the sealing structure such as the sealing ring on the outside of the external water adapter easy to slip and loosen, thereby making it difficult to securely install the external water adapter and the tee. Utility Model Content

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a water delivery structure for a coffee machine and a coffee machine with high structural strength and reliable installation.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A water supply structure for a coffee machine includes a three-way joint, an external water pipe, and a connecting plug; the three-way joint is provided with a water inlet port, a first water outlet port, and a second water outlet port; the water inlet port is connected to the first water outlet port and the second water outlet port, respectively; the first water outlet port and the second water outlet port are respectively used to connect to water-using equipment inside the coffee machine;

[0009] The connecting plug includes a rigid inner embedded tube and a soft outer rubber sleeve, the soft outer rubber sleeve is sleeved on the water outlet end of the rigid inner embedded tube; the water outlet end of the rigid inner embedded tube is located in the water inlet port, and the rigid inner embedded tube is pressed against the inner circumferential wall of the water inlet port through the soft outer rubber sleeve, so that the soft outer rubber sleeve is sealed between the inner circumferential wall of the water inlet port and the rigid inner embedded tube; the external water pipe is connected to the water inlet end of the rigid inner embedded tube and is connected to the water inlet port, and the external water pipe is used to connect to a water source outside the coffee machine.

[0010] In one embodiment, the end of the water outlet end of the rigid embedded tube extends out of the first end of the soft outer rubber sleeve and protrudes to form an anti-slip boss; the end surface of the first end of the soft outer rubber sleeve abuts against the anti-slip boss.

[0011] In one embodiment, a stop ring is protruded from the outer peripheral wall of the soft outer rubber sleeve, and the stop ring is pressed against the end face of the water inlet port.

[0012] In one embodiment, the water outlet end of the external water pipe is sleeved on the water inlet end of the rigid embedded pipe, and the rigid embedded pipe is connected to the external water pipe.

[0013] In one embodiment, a guide rib is formed around the outer peripheral wall of the water inlet end of the rigid embedded tube; the thickness of the guide rib gradually decreases from the water inlet end of the rigid embedded tube to the water outlet end of the rigid embedded tube, and forms a guide bevel; the guide bevel is abutted against the inner tube wall of the external water pipe.

[0014] In one embodiment, a water retaining ring is connected to the outer wall of the soft outer rubber sleeve, and the water retaining ring is arranged along the circumference of the soft outer rubber sleeve; the water retaining ring is supported against the inner circumferential wall of the water inlet port.

[0015] In one embodiment, the number of the water retaining rings is at least two, and the at least two water retaining rings are spaced apart along the axial direction of the soft outer rubber sleeve.

[0016] In one embodiment, the position where the water retaining ring contacts the inner pipe wall of the external water pipe is an arc-shaped surface.

[0017] A coffee machine, comprising a coffee machine body, a soft rubber plug assembly, and a coffee machine water supply structure according to any of the above embodiments; the three-way joint is arranged in the coffee machine body; the connecting plug is inserted into the water inlet port and connected to the external water pipe; the soft rubber plug assembly is connected to the coffee machine body and is used to seal the water inlet port after the connecting plug is removed from the water inlet port.

[0018] In one embodiment, the soft rubber plug assembly includes a plug connector, a connecting belt and a sealing plug connected in sequence, the plug connector is embedded in the connecting hole of the coffee machine body, and the sealing plug is used to be embedded in the water inlet port after the connecting plug is pulled out of the water inlet port.

[0019] Compared with the prior art, the present disclosure has at least the following advantages:

[0020] 1) Because the soft outer rubber sleeve is sleeved onto the outlet end of the rigid inner tube, which is located within the water inlet port, and the rigid inner tube provides support for the soft outer rubber sleeve through its own structural rigidity, the soft outer rubber sleeve deforms under the support of the rigid inner tube and presses against the inner wall of the water inlet port, thereby sealing the gap between the water inlet port and the rigid inner tube. Furthermore, because the external water pipe is connected to the water inlet port, the first and second water outlet ports are respectively connected to the water devices within the coffee machine, allowing water from an external source to be supplied to the water devices within the coffee machine via the three-way connector.

[0021] 2) Compared with the water inlet structure of the coffee machine in the prior art, the water delivery structure of the coffee machine described above has a soft outer rubber sleeve that is sleeved on the water outlet end of the rigid inner tube. When the connecting plug is inserted into the water inlet port, the rigid inner tube can provide support to the soft outer rubber sleeve through its own structural rigidity, thereby reducing the deformation of the connecting plug during the insertion and removal process. At the same time, the soft outer rubber sleeve can be deformed and supported by the rigid inner tube to support the inner wall of the water inlet port, which not only enables the connecting plug and the three-way joint to be firmly installed together, but also increases the friction between the soft outer rubber sleeve and the rigid inner tube, making the soft outer rubber sleeve less likely to slip or loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a structural schematic diagram of a water supply structure of a coffee machine according to an embodiment of the present disclosure;

[0024] Figure 2 for Figure 1 A cross-sectional view of the water delivery structure of the coffee machine shown;

[0025] Figure 3 This is a partial cross-sectional structural diagram of a coffee machine according to another embodiment of the present disclosure.

[0026] Figure numerals: 100, coffee machine water supply structure; 110, three-way connector; 1110, water inlet port; 1120, first water outlet interface; 1130, second water outlet interface; 120, external water pipe; 130, connecting plug; 1310, rigid embedded tube; 1311, anti-slip boss; 1312, guide rib; 1320, soft outer rubber sleeve; 1321, stop buckle; 1322, water retaining ring; 200, coffee machine body; 210, connecting hole; 300, soft rubber plug assembly; 310, plug connector; 320, connecting belt; 330, sealing plug. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0031] like Figure 1 and Figure 2As shown, a water supply structure 100 of a coffee machine according to an embodiment includes a three-way connector 110, an external water pipe 120, and a connecting plug 130. The three-way connector 110 is provided with a water inlet port 1110, a first water outlet port 1120, and a second water outlet port 1130. The water inlet port 1110 is connected to the first water outlet port 1120 and the second water outlet port 1130 respectively. The first water outlet port 1120 and the second water outlet port 1130 are respectively used to connect to the water-using equipment inside the coffee machine. The connecting plug 130 includes a rigid inner tube 1310 and a soft outer rubber sleeve 1320. The soft outer rubber sleeve 1320 is sleeved on the water outlet end of the rigid embedded tube 1310; the water outlet end of the rigid embedded tube 1310 is located in the water inlet port 1110, and the rigid embedded tube 1310 is pressed against the inner circumferential wall of the water inlet port 1110 through the soft outer rubber sleeve 1320, so that the soft outer rubber sleeve 1320 is sealed between the inner circumferential wall of the water inlet port 1110 and the rigid embedded tube 1310; the external water pipe 120 is connected to the water inlet end of the rigid embedded tube 1310 and is connected to the water inlet port 1110. The external water pipe 120 is used to connect to a water source outside the coffee machine.

[0032] It can be understood that because the soft outer rubber sleeve 1320 is sleeved onto the water outlet end of the rigid inner tube 1310, the rigid inner tube 1310 is located within the water inlet port 1110, and the rigid inner tube 1310 can provide support for the soft outer rubber sleeve 1320 through its own structural rigidity, the soft outer rubber sleeve 1320 deforms under the support of the rigid inner tube 1310 and can press against the inner circumferential wall of the water inlet port 1110, thereby blocking the gap between the water inlet port 1110 and the rigid inner tube 1310. Furthermore, because the external water pipe 120 is connected to the water inlet port 1110, the first water outlet interface 1120 and the second water outlet interface 1130 are respectively connected to the water equipment within the coffee machine, so that the water source outside the coffee machine can supply water to the water equipment within the coffee machine through the three-way connector 110.

[0033] It can be understood that compared with the water inlet structure of the coffee machine in the prior art, the above-mentioned coffee machine water delivery structure 100, since the soft outer rubber sleeve 1320 is sleeved on the water outlet end of the rigid embedded tube 1310, when the connecting plug 130 is inserted into the water inlet port 1110, the rigid embedded tube 1310 can provide support to the soft outer rubber sleeve 1320 through its own structural rigidity, thereby reducing the deformation of the connecting plug 130 during the plugging and unplugging process. At the same time, the soft outer rubber sleeve 1320 can be deformed and hold against the inner wall of the water inlet port 1110 under the support of the rigid embedded tube 1310, which not only enables the connecting plug 130 and the three-way connector 110 to be firmly installed together, but also increases the friction between the soft outer rubber sleeve 1320 and the rigid embedded tube 1310, making the soft outer rubber sleeve 1320 less likely to slip or loosen.

[0034] In one embodiment, the water source outside the coffee machine may be bottled water, a faucet, an external water pipe, etc., and the water-using equipment inside the coffee machine may be a brewing head, a steam boiler, an extraction boiler, etc. The rigid embedded tube 1310 may be a hard PVC tube, a stainless steel tube, a copper tube, or an aluminum tube, etc., and the soft outer rubber sleeve 1320 may be a silicone sleeve, a rubber sleeve, etc., and those skilled in the art may make other choices according to their needs.

[0035] Combine Figure 2 As shown, in one embodiment, the end of the water outlet end of the rigid embedded tube 1310 extends out of the end of the soft outer rubber sleeve 1320 and protrudes to form an anti-slip boss 1311; the end face of the end of the soft outer rubber sleeve 1320 is abutted against the anti-slip boss 1311. It can be understood that since the end of the water outlet end of the rigid embedded tube 1310 protrudes to form an anti-slip boss 1311, the end face of the upper end of the soft outer rubber sleeve 1320 is pressed against the anti-slip boss 1311. When the connecting plug 130 is pulled out from the water inlet port 1110, the anti-slip boss 1311 presses against the end face of the upper end of the soft outer rubber sleeve 1320, thereby restraining the movement of the soft outer rubber sleeve 1320, thereby preventing the soft outer rubber sleeve 1320 from escaping from the water outlet end of the rigid embedded tube 1310, and then the soft outer rubber sleeve 1320 and the rigid embedded tube 1310 are synchronously pulled out of the water inlet port 1110.

[0036] Combine Figure 2 As shown, in one embodiment, a retaining ring 1321 is protruded from the outer peripheral wall of the soft outer rubber sleeve 1320, and the retaining ring 1321 abuts against the end surface of the water inlet port 1110. It can be understood that because the retaining ring 1321 is protruded from the outer peripheral wall of the soft outer rubber sleeve 1320, when the connecting plug 130 is inserted into the water inlet port 1110, the retaining ring 1321 abuts against the end surface of the water inlet port 1110, and the soft outer rubber sleeve 1320 can be pushed into the water inlet port 1110 to a predetermined depth, thereby preventing the soft outer rubber sleeve 1320 from being inserted too deep into the water inlet port 1110 and affecting subsequent insertion and removal.

[0037] Combine Figure 2 As shown, in one embodiment, the water outlet end of the external water pipe 120 is sleeved onto the water inlet end of the rigid embedded pipe 1310, and the rigid embedded pipe 1310 is connected to the external water pipe 120. It can be understood that by sleeve-fitting the water outlet end of the external water pipe 120 onto the water inlet end of the rigid embedded pipe 1310, the external water pipe 120 and the rigid embedded pipe 1310 can be tightly connected together, resulting in a compact structure and greater convenience in use.

[0038] Combine Figure 1 and Figure 2As shown, in one embodiment, a guide rib 1312 is formed around the outer circumferential wall of the water inlet end of the rigid inner tube 1310. The thickness of the guide rib 1312 gradually decreases from the water outlet end of the rigid inner tube 1310 to the water inlet end of the rigid inner tube 1310, forming a guide bevel. The guide bevel abuts against the inner wall of the external water pipe 120. It can be understood that because the thickness of the guide rib 1312 gradually decreases from the water outlet end of the rigid inner tube 1310 to the water inlet end of the rigid inner tube 1310, the guide bevel forms the water inlet end of the rigid inner tube 1310. When the water outlet end of the external water pipe 120 is connected to the water inlet end of the rigid inner tube 1310, the guide bevel guides the inner wall of the water outlet end of the external water pipe 120, thereby allowing the water outlet end of the external water pipe 120 to be connected to the water inlet end of the rigid inner tube 1310 more smoothly.

[0039] Combine Figure 1 and Figure 2 As shown, in one embodiment, a water retaining ring 1322 is connected to the outer wall of the soft outer rubber sleeve 1320 and is arranged along the circumference of the soft outer rubber sleeve 1320. The water retaining ring 1322 abuts against the inner circumferential wall of the water inlet port 1110. It can be understood that the abutment of the water retaining ring 1322 against the inner circumferential wall of the water inlet port 1110 can increase the friction between the soft outer rubber sleeve 1320 and the inner circumferential wall of the water inlet port 1110, thereby preventing the soft outer rubber sleeve 1320 from falling out of the water inlet port 1110. At the same time, since the water retaining ring 1322 is arranged along the circumference of the soft outer rubber sleeve 1320, when water enters the water inlet port 1110 of the three-way joint 110 through the rigid embedded tube 1310, the water retaining ring 1322 can further reduce the gap between the soft outer rubber sleeve 1320 and the inner wall of the water inlet port 1110, thereby reducing the occurrence of water leakage.

[0040] Combine Figure 2 As shown, in this embodiment, the number of the water retaining rings 1322 is at least two, and the at least two water retaining rings 1322 are spaced apart along the axial direction of the soft outer rubber sleeve 1320. It can be understood that since the number of the water retaining rings 1322 is at least two and the at least two water retaining rings 1322 are spaced apart along the axial direction of the soft outer rubber sleeve 1320, a multi-layer blocking structure is formed along the axial direction of the soft outer rubber sleeve 1320, thereby further increasing friction and reducing the occurrence of water leakage.

[0041] Combine Figure 1 and Figure 2As shown, in this embodiment, the location where the water retaining ring 1322 contacts the inner wall of the external water pipe 120 is an arc-shaped surface. It can be understood that since the location where the water retaining ring 1322 contacts the inner wall of the external water pipe 120 is an arc-shaped surface, when the water retaining ring 1322 contacts the inner wall of the external water pipe 120, the arc-shaped surface structure is more evenly stressed and less likely to deform, thereby achieving a better water blocking effect.

[0042] like Figure 2 and Figure 3 As shown, the present disclosure further provides a coffee machine, comprising a coffee machine body 200, a soft rubber plug assembly 300, and a coffee machine water delivery structure 100 according to any of the above-mentioned embodiments; a three-way connector 110 is disposed within the coffee machine body 200; a connecting plug 130 is inserted into a water inlet port 1110 and connected to an external water pipe 120; and the soft rubber plug assembly 300 is connected to the coffee machine body 200 and is configured to seal the water inlet port 1110 after the connecting plug 130 is removed from the water inlet port 1110. It is understood that since the soft rubber plug assembly 300 is connected to the coffee machine body 200, it is less likely to be lost. When the connecting plug 130 is removed from the water inlet port 1110, the soft rubber plug assembly 300 can be sealed within the water inlet port 1110, thereby preventing external debris from entering the water inlet port 1110 and causing contamination. The soft rubber plug assembly 300 includes a silicone plug, a rubber plug, etc., and those skilled in the art may make other choices according to their needs.

[0043] Combine Figure 3 As shown in one embodiment, a soft rubber plug assembly 300 includes a plug connector 310, a connecting strap 320, and a sealing plug 330 connected in sequence. The plug connector 310 is inserted into the connection hole 210 of the coffee machine body 200, and the sealing plug 330 is used to be inserted into the water inlet port 1110 after the connecting plug 130 is removed from the water inlet port 1110. It can be understood that by inserting the plug connector 310 into the connection hole 210 of the coffee machine body 200, the plug connector 310 and the coffee machine body 200 are connected together. The plug connector 310 is connected to the sealing plug 330 via the connecting strap 320, which can prevent the sealing plug 330 from being lost. When the connecting plug 130 is removed from the water inlet port 1110, the sealing plug 330 can be inserted into the connection hole 210 of the coffee machine body 200, thereby sealing the connection hole 210 of the coffee machine body 200. The plug connector 310, the connecting strap 320, and the sealing plug 330 are integrally formed.

[0044] Compared with the prior art, the present disclosure has at least the following advantages:

[0045] 1) Because the soft outer rubber sleeve 1320 is sleeved onto the water outlet end of the rigid inner tube 1310, the rigid inner tube 1310 is located within the water inlet port 1110. The rigid inner tube 1310 provides support for the soft outer rubber sleeve 1320 through its own structural rigidity. This allows the soft outer rubber sleeve 1320 to deform under the support of the rigid inner tube 1310 and press against the inner wall of the water inlet port 1110, thereby sealing the gap between the water inlet port 1110 and the rigid inner tube 1310. Furthermore, because the external water pipe 120 is connected to the water inlet port 1110, the first and second water outlet ports 1120 and 1130 are respectively connected to the water devices within the coffee machine, allowing water from an external source to be supplied to the water devices within the coffee machine through the tee connector 110.

[0046] 2) Compared with the water inlet structure of the coffee machine in the prior art, the water delivery structure 100 of the coffee machine described above has the soft outer rubber sleeve 1320 sleeved on the water outlet end of the rigid inner tube 1310. When the connecting plug 130 is inserted into the water inlet port 1110, the rigid inner tube 1310 can provide support for the soft outer rubber sleeve 1320 through its own structural rigidity, thereby reducing the deformation of the connecting plug 130 during the insertion and removal process. At the same time, the soft outer rubber sleeve 1320, supported by the rigid inner tube 1310, can deform and bear against the inner circumferential wall of the water inlet port 1110. This not only ensures that the connecting plug 130 and the three-way connector 110 are securely installed together, but also increases the friction between the soft outer rubber sleeve 1320 and the rigid inner tube 1310, making the soft outer rubber sleeve 1320 less likely to slip or loosen.

[0047] The above-described embodiments merely represent several implementation methods of the present disclosure. 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 a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A water supply structure for a coffee machine, comprising a three-way joint, an external water pipe, and a connecting plug; the three-way joint is provided with a water inlet port, a first water outlet port, and a second water outlet port, the water inlet port being connected to the first water outlet port and the second water outlet port, respectively; the first water outlet port and the second water outlet port being connected to water-using equipment within the coffee machine; It is characterized by: The connecting plug includes a rigid inner embedded tube and a soft outer rubber sleeve, the soft outer rubber sleeve is sleeved on the water outlet end of the rigid inner embedded tube; the water outlet end of the rigid inner embedded tube is located in the water inlet port, and the rigid inner embedded tube is pressed against the inner circumferential wall of the water inlet port through the soft outer rubber sleeve, so that the soft outer rubber sleeve is sealed between the inner circumferential wall of the water inlet port and the rigid inner embedded tube; the external water pipe is connected to the water inlet end of the rigid inner embedded tube and is connected to the water inlet port, and the external water pipe is used to connect to a water source outside the coffee machine.

2. The water supply structure of the coffee machine according to claim 1, characterized in that: The end of the water outlet end of the rigid embedded tube extends out of the first end of the soft outer rubber sleeve and protrudes to form an anti-slip boss; the end surface of the first end of the soft outer rubber sleeve abuts against the anti-slip boss.

3. The water supply structure of the coffee machine according to claim 1, characterized in that: A stop ring is protruded from the outer peripheral wall of the soft outer rubber sleeve, and the stop ring is pressed against the end surface of the water inlet port.

4. The water supply structure of the coffee machine according to claim 1, characterized in that: The water outlet end of the external water pipe is sleeved on the water inlet end of the rigid embedded pipe, and the rigid embedded pipe is communicated with the external water pipe.

5. The water supply structure of the coffee machine according to claim 4, characterized in that: A guide rib is formed around the outer peripheral wall of the water inlet end of the rigid embedded tube; the thickness of the guide rib gradually decreases from the water inlet end of the rigid embedded tube to the water outlet end of the rigid embedded tube, and forms a guide bevel; the guide bevel is against the inner tube wall of the external water pipe.

6. The water supply structure of the coffee machine according to claim 1, characterized in that: A water retaining ring is connected to the outer wall of the soft outer rubber sleeve and is arranged along the circumference of the soft outer rubber sleeve; the water retaining ring is supported by the inner circumferential wall of the water inlet port.

7. The water supply structure of the coffee machine according to claim 6, characterized in that: The number of the water retaining rings is at least two, and the at least two water retaining rings are spaced apart along the axial direction of the soft outer rubber sleeve.

8. The water supply structure of the coffee machine according to claim 6, characterized in that: The position where the water retaining ring contacts the inner pipe wall of the external water pipe is an arc-shaped surface.

9. A coffee machine, characterized in that: The coffee machine comprises a coffee machine body, a soft rubber plug assembly, and a water supply structure for the coffee machine according to any one of claims 1 to 8; the three-way joint is arranged in the coffee machine body; the connecting plug is inserted into the water inlet port and connected to the external water pipe; the soft rubber plug assembly is connected to the coffee machine body and is used to seal the water inlet port after the connecting plug is pulled out of the water inlet port.

10. The coffee machine according to claim 9, characterized in that The soft rubber plug assembly includes a plug connector, a connecting belt and a sealing plug connected in sequence. The plug connector is embedded in the connecting hole of the coffee machine body, and the sealing plug is used to be embedded in the water inlet port after the connecting plug is pulled out of the water inlet port.

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