Residue-preventing connector

Abstract

The utility model provides an anti-residue joint which comprises a male joint, a female joint, an ejector rod, a sleeve and a first elastic reset piece, a first channel for communicating a first end and a second end of the male joint is arranged in the male joint, the first end of the sleeve is movably sleeved with the second end of the male joint, and the first elastic reset piece is arranged on the outer side of the sleeve. The first end of the first elastic reset piece is connected with the male connector, the second end of the first elastic reset piece is connected with the sleeve, the first end of the ejector rod is fixed in the first channel, and the second end of the ejector rod extends into the sleeve, corresponds to a port of the second end of the sleeve and is used for blocking or opening the port of the second end of the sleeve. A second channel for communicating the first end and the second end of the female joint is arranged in the female joint, a port of the first end of the female joint corresponds to a port of the second end of the sleeve, and when the sleeve abuts against the first end of the female joint, the first channel is communicated with the second channel. The first elastic reset piece is arranged outside the medium channel, the medium cannot remain on the first elastic reset piece, and the elastic reset piece is suitable for beverage equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid connectors, in particular to an anti-residue connector. Background Art

[0002] Most of the elastic return members of the existing two-way plug-in connectors on the market are springs, and the springs are generally arranged in the fluid channel and are in direct contact with the fluid.

[0003] For example, a Chinese invention patent application with application publication number CN118302627A discloses a quick-close coupler, comprising a male connector and a female connector capable of mating with each other, each connector comprising an internal fluid passage along a main axis and a valve axially displaceable in the passage against an elastic reset member, the valve comprising a main body, the main body being provided with a portion of a widened section forming a closed head and a proximal free end for connecting to another valve, wherein, in the coupled configuration of the two connectors, the valves interact with each other by pushing each other into a fluid-open position, and ... In the disconnected connector configuration, the valves resiliently return to a sealed, closed position within the passageway via their closure heads. The body of one of the valves includes a section for connecting the closure head to the free end, the section having a portion converging toward the neck and a portion expanding upward toward the free end to define a widened end connection surface. The closure head of the other valve is truncated at its free end to define a widened end connection surface. In the coupled configuration of the two connectors, the two widened end connection surfaces interact with each other via complementary engaging protrusions formed on the surfaces. This quick-close coupling is primarily used for fluid transfer in heat exchangers within fuel circuits, air or vacuum circuits, steam or cooling circuits of engines, batteries for electric or hybrid vehicles, power electronics, or other devices, but is not suitable for beverage applications. The spring, the spring's resilient return member, is poorly designed and comes into direct contact with the liquid, making it difficult to clean if used in beverage applications.

[0004] Therefore, the existing technology for the above problems has yet to be developed. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-pregnancy joint in view of the defects and shortcomings of the existing technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The first end of the push rod is fixed to the first channel, and the second end of the push rod is inserted into the second end of the sleeve, and the second end of the push rod is inserted into the second end of the sleeve, so that the push rod can be inserted into the first channel and the second end of the sleeve can be inserted into the second end of the sleeve.

[0008] The female connector assembly includes a female connector, wherein the female connector is provided with a second passage, the second passage connecting the first end and the second end of the female connector, the port at the first end of the female connector corresponding to the port at the second end of the sleeve, when the second end of the sleeve abuts the first end of the female connector, that is, when the female connector applies a thrust to the sleeve, the sleeve moves toward the second end of the male connector, at which time the second end of the push rod moves away from the port at the second end of the sleeve, opening the port at the second end of the sleeve. With the above-mentioned structural arrangement, when the male connector assembly is separated from the female connector assembly, the first elastic return member acts on the sleeve in the male connector assembly, causing the sleeve to move away from the second end of the male connector, and the second end of the sleeve is automatically blocked by the second end of the push rod, thereby effectively preventing leakage of the fluid medium in the male connector assembly. In addition, the first elastic return member for returning the sleeve to its original position is disposed outside the fluid passage and is isolated from the fluid passage. In actual use, the fluid medium does not remain on the first elastic return member. The utility model is suitable for beverage equipment. In actual use, when the male connector assembly collides with the female connector, the first end of the female connector gives a thrust to the second end of the sleeve, the first elastic return member is compressed, and the sleeve moves toward the second end of the male connector, and the second end of the push rod disengages from the second end port of the sleeve and extends into the second channel of the female connector, and a gap is generated between the second end of the push rod and the sleeve and the female connector, and the first channel is connected to the second channel; when the male connector assembly is separated from the female connector, the thrust applied to the sleeve disappears, the first elastic return member approaches a free state, and the sleeve returns to its original position under the action of the first elastic return member, and the port at the second end of the sleeve continues to be tightly connected with the second end of the push rod, that is, the second end of the push rod blocks the port at the second end of the sleeve.

[0009] According to the above scheme, the sleeve is provided with a fixing frame, the sleeve outer shell is provided with a limiting cylinder, the limiting cylinder is fixedly connected to the fixing frame, the limiting cylinder is provided with a limiting slide, a slider is fixedly provided on the outer side of the male joint, the second end of the male joint is sleeved on the outer side of the first end of the sleeve, and the slider is provided in the limiting slide, specifically, the limiting cylinder is also provided with an installation slide, the installation slide is connected to the limiting slide, the slider enters the limiting slide through the installation slide, the first elastic reset member is provided between the sleeve and the limiting cylinder, the first end of the first elastic reset member is connected to the male joint, and the second end of the first elastic reset member is connected to the fixing frame. Through the above structural setting, the sleeve can be reciprocated along the direction of the male joint, and the displacement of the reciprocating movement of the sleeve can be limited by setting the length of the limiting slide and the elastic action range of the first reset elastic member.

[0010] According to the above solution, the second end of the sleeve is sleeved with the first end of the female connector. When the fixing bracket abuts the first end of the female connector, the second end of the push rod moves away from the port at the second end of the sleeve, and the port at the second end of the sleeve is opened. This structural arrangement makes the connection between the sleeve and the female connector more convenient and precise.

[0011] According to the above solution, the present invention further includes a first sealing ring and a second sealing ring. The first sealing ring is provided between the male connector and the sleeve, and the second sealing ring is provided between the sleeve and the female connector. This structural arrangement increases the tightness between the male connector and the sleeve, and between the sleeve and the female connector.

[0012] According to the above solution, the first elastic return member is a first spring, which is sleeved outside the sleeve, with a first end of the first spring abutting against the male connector, and a second end of the first spring abutting against the fixing bracket. With the above structural arrangement, the first elastic return member is a spring member, which is easy to assemble.

[0013] According to the above solution, the ejector pin includes a fixed rod and a first sealing block. The first end of the fixed rod is fixed in the first channel, and the second end of the fixed rod is fixedly connected to the first sealing block. The first sealing block is tightly connected to the port at the second end of the sleeve. Specifically, the port at the second end of the sleeve is provided with a first inclined surface, and the first sealing block is provided with a second inclined surface. The first and second inclined surfaces cooperate with each other. This structural arrangement improves the sealing between the ejector pin and the port at the second end of the sleeve.

[0014] According to the above solution, the female connector assembly further includes a movable rod, a second elastic return member, and a sealing sleeve, wherein the movable rod is reciprocally movable and arranged in the second channel, the first end of the second elastic return member is connected to the movable rod, the second end of the second elastic return member is connected to the female connector, the first end of the movable rod corresponds to the second end of the push rod, the sealing sleeve is a compressive deformable structure, the first end of the sealing sleeve is fixed to the movable rod, the second end of the sealing sleeve is fixed to the female connector, and the second elastic return member is located inside the sealing sleeve and isolated from the second channel. Through the above structural arrangement, when the male connector assembly and the female connector assembly are docked, the push rod pushes the movable rod away from the first end port of the female connector, at which time the first channel and the second channel are connected; when the male connector assembly and the female connector assembly are separated, the thrust acting on the movable rod disappears, and the first end of the movable rod automatically blocks the first end port of the female connector to prevent leakage of the fluid medium in the female connector, and the second elastic return member is arranged outside the fluid channel, isolated from the fluid channel, so that the fluid medium does not remain in the second elastic return member during actual use.

[0015] According to the above solution, the first end of the sealing sleeve is provided with a second sealing block, the second sealing block is sleeved on the first end of the movable rod, and the second sealing block corresponds to the port at the first end of the female connector and is used to block or open the port at the first end of the female connector.

[0016] The second end of the sealing sleeve is a stepped deformable horn structure, the large diameter end of the horn structure is fixedly connected to the female connector, the second elastic reset member is located inside the horn structure, and the second elastic reset member is separated from the second channel. Through the above structural setting, the sealing sleeve separates the movable rod, the second elastic reset member and the second channel to prevent the second elastic reset member from retaining fluid medium, while also meeting the reciprocating motion of the movable rod.

[0017] According to the above scheme, the female connector includes a female connector cover, and the female connector is provided with a mounting port connected to the second channel, the large diameter end of the horn structure is provided on the mounting port, and the female connector cover fixing cover is provided on the mounting port, and the female connector cover is provided with a limiting hole, and the limiting hole can be a through hole structure or a blind hole. If it is a blind hole, the depth in the blind hole is sufficient for the second end of the movable rod to move back and forth, and a limiting rib is fixed on the movable rod, and the limiting rib is provided inside the horn structure, and the limiting rib is abutted against the small diameter end of the horn structure, and the second end of the movable rod can be reciprocatingly inserted into the limiting hole, and the first end of the second elastic reset member abuts against the limiting rib, and the second end of the second elastic reset member abuts against the female connector cover. Through the above-mentioned structural setting, during installation, the sealing sleeve is first placed on the outside of the movable rod, and then the sealing sleeve is placed into the second channel of the female connector through the installation port. The large diameter end of the horn structure is placed on the installation port, and the installation port is sealed. The second end of the movable rod is connected to the second elastic reset part and then inserted into the limiting hole. The female connector cover is covered to complete the assembly of the female connector assembly, and the operation is simple.

[0018] According to the above solution, the second elastic return member is a second spring, the female connector cover is provided with a limiting post, the limiting hole is provided within the limiting post, the first end of the second spring abuts against the limiting rib, the second end of the second spring is sleeved outside the limiting post, and the second end of the second spring abuts against the inside of the female connector cover. With the above structural arrangement, the second elastic return member is a spring structure, which is simple in structure and easy to install.

[0019] Beneficial effects of the utility model:

[0020] When the male connector assembly of the utility model is separated from the female connector assembly, the first elastic return member acts on the sleeve in the male connector assembly, so that the second end port of the sleeve is automatically blocked by the push rod, which can effectively prevent leakage of the fluid medium in the male connector assembly. In addition, the first elastic return member for resetting the sleeve is arranged outside the fluid channel and is isolated from the fluid channel. During actual use, the fluid medium will not remain on the first elastic return member, the fluid channel is easy to clean, and is suitable for beverage equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram of the use state of the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the cross-section structure;

[0023] Figure 3 It is a structural schematic diagram of the male connector assembly of the present utility model;

[0024] Figure 4 yes Figure 3 Schematic diagram of the cross-section structure;

[0025] Figure 5 yes Figure 3 Schematic diagram of the decomposition structure;

[0026] Figure 6 It is a structural schematic diagram of the female connector assembly of the present utility model;

[0027] Figure 7 yes Figure 6 Schematic diagram of the cross-section structure;

[0028] Figure 8 yes Figure 6 Schematic diagram of the decomposition structure.

[0029] In the figure: 1. male connector assembly; 11. male connector; 12. push rod; 13. sleeve; 14. first elastic return member; 15. limiting cylinder; 16. first sealing ring; 17. second sealing ring; 111. first channel; 112. slider; 121. fixing rod; 122. first sealing block; 132. fixing frame; 151. limiting slide groove; 2. female connector assembly; 21. female connector; 22. movable rod; 23. second elastic return member; 24. sealing sleeve; 25. female connector cover; 211. second channel; 212. mounting port; 221. limiting rib; 251. limiting hole; 252. limiting column. DETAILED DESCRIPTION

[0030] The technical solution of the present utility model is described below with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] like Figure 1-2As shown, the utility model provides an anti-residue joint, including a male joint component 1 and a female joint component 2, the male joint component 1 including a male joint 11, a push rod 12, a sleeve 13 and a first elastic return member 14, a first channel 111 is provided in the male joint 11, the first channel 111 conducts the first end and the second end of the male joint 11, the first end of the sleeve 13 is movably connected to the second end of the male joint 11, specifically, the sleeve 13 can reciprocate in the direction away from or close to the second end of the male joint 11, and the sleeve 13 moves toward the direction close to the second end of the male joint 11 under the action of an external force, and the external force After disappearing, the first elastic reset member 14 can reset the sleeve 13 (i.e., move it in the direction away from the second end of the male connector 11). The first elastic reset member 14 is arranged on the outside of the sleeve 13. The first end of the first elastic reset member 14 is connected to the male connector 11, and the second end of the first elastic reset member 14 is connected to the sleeve 13. The first end of the push rod 12 is fixed in the first channel 111, and the second end of the push rod 12 extends into the sleeve 13 and corresponds to the port of the second end of the sleeve 13, that is, the second end of the push rod 12 can block or open the port of the second end of the sleeve 13.

[0033] The female connector assembly 2 includes a female connector 21, and a second channel 211 is provided in the female connector 21. The second channel 211 connects the first end and the second end of the female connector 21. The port of the first end of the female connector 21 corresponds to the port of the second end of the sleeve 13. When the second end of the sleeve 13 abuts against the first end of the female connector 21, that is, when the female connector 21 gives a thrust to the sleeve 13, the sleeve 13 moves toward the direction close to the second end of the male connector 11. At this time, the second end of the push rod 12 is away from the port of the second end of the sleeve 13, opening the port of the second end of the sleeve 13. Through the above-mentioned structural setting, when the male connector assembly 1 is separated from the female connector assembly 2, the first elastic return member 14 acts on the sleeve 13 in the male connector assembly 1, causing the sleeve 13 to move in a direction away from the second end of the male connector 11, and the second end port of the sleeve 13 is automatically blocked by the second end of the push rod 12, which can effectively prevent leakage of the fluid medium in the male connector assembly 1. In addition, the first elastic return member 14 for resetting the sleeve 13 is arranged outside the fluid channel and is isolated from the fluid channel. During actual use, the fluid medium will not remain on the first elastic return member 14. The utility model is suitable for beverage equipment. In actual use, when the male connector assembly 1 collides with the female connector 21, the first end of the female connector 21 gives a thrust to the second end of the sleeve 13, the first elastic return member 14 is compressed, and the sleeve 13 moves in the direction close to the second end of the male connector 11, and the second end of the push rod 12 disengages from the second end port of the sleeve 13 and extends into the second channel 211 of the female connector 21, and a gap is generated between the second end of the push rod 12 and the sleeve 13 and the female connector 21, and the first channel 111 is connected to the second channel 211; when the male connector assembly 1 is separated from the female connector 21, the thrust applied to the sleeve 13 disappears, the first elastic return member 14 approaches a free state, and the sleeve 13 returns to its original position under the action of the first elastic return member 14, and the port of the second end of the sleeve 13 continues to be tightly connected with the second end of the push rod 12, that is, the second end of the push rod 12 blocks the port of the second end of the sleeve 13.

[0034] Further, if Figure 3-5As shown, the sleeve 13 is provided with a fixing frame 132, and the sleeve 13 is outer-lying provided with a limiting cylinder 15, and the limiting cylinder 15 is fixedly connected to the fixing frame 132, and the limiting cylinder 15 is provided with a limiting slide groove 151. A slider 112 is fixed to the outside of the male joint 11, and the second end of the male joint 11 is sleeved on the outside of the first end of the sleeve 13, and the slider 112 is arranged in the limiting slide groove 151. Specifically, the limiting cylinder 15 is also provided with an installation slide, and the installation slide is communicated with the limiting slide groove 151, and the slider 112 enters the limiting slide groove 151 through the installation slide, and the first elastic return member 14 is arranged between the sleeve 13 and the limiting cylinder 15, and the first end of the first elastic return member 14 is connected to the male joint 11, and the second end of the first elastic return member 14 is connected to the fixing frame 132. Through the above-mentioned structural setting, the sleeve 13 can be reciprocated along the direction of the male connector 11, and the displacement of the reciprocating movement of the sleeve 13 can be limited by setting the length of the limiting slide groove 151 and the elastic force range of the first reset elastic member.

[0035] Specifically, the second end of the sleeve 13 is sleeved with the first end of the female connector 21. When the fixing bracket 132 abuts the first end of the female connector 21, the second end of the push rod 12 moves away from the port at the second end of the sleeve 13, and the port at the second end of the sleeve 13 is opened. This structural arrangement makes the connection between the sleeve 13 and the female connector 21 more convenient and precise.

[0036] Furthermore, the present invention further includes a first sealing ring 16 and a second sealing ring 17. The first sealing ring 16 is provided between the male connector 11 and the sleeve 13, and the second sealing ring 17 is provided between the sleeve 13 and the female connector 21. Through the above-mentioned structural arrangement, the tightness between the male connector 11 and the sleeve 13, and between the sleeve 13 and the female connector 21 is increased.

[0037] Specifically, the first elastic return member 14 is a first spring, which is sleeved outside the sleeve 13. The first end of the first spring abuts against the male connector 11, and the second end of the first spring abuts against the fixing bracket 132. With the above-mentioned structural arrangement, the first elastic return member 14 is a spring member, which is easy to assemble.

[0038] Specifically, the push rod 12 includes a fixing rod 121 and a first sealing block 122. The first end of the fixing rod 121 is fixed within the first channel 111, and the second end of the fixing rod 121 is fixedly connected to the first sealing block 122. The first sealing block 122 is tightly connected to the port at the second end of the sleeve 13. Specifically, the port at the second end of the sleeve 13 is provided with a first inclined surface, and the first sealing block 122 is provided with a second inclined surface. The first and second inclined surfaces cooperate with each other. This structural arrangement improves the sealing between the push rod 12 and the port at the second end of the sleeve 13.

[0039] Further, if Figure 6-8 As shown, the female connector assembly 2 also includes a movable rod 22, a second elastic return member 23 and a sealing sleeve 24. The movable rod 22 can reciprocate and is arranged in the second channel 211. The first end of the second elastic return member 23 is connected to the movable rod 22, and the second end of the second elastic return member 23 is connected to the female connector 21. The first end of the movable rod 22 corresponds to the second end of the push rod 12. The sealing sleeve 24 is a compressive deformable structure. The first end of the sealing sleeve 24 is fixed on the movable rod, and the second end of the sealing sleeve 24 is fixed on the female connector 21. The second elastic return member is located inside the sealing sleeve 24 and is isolated from the second channel 211. Through the above-mentioned structural setting, when the male connector assembly 1 and the female connector assembly 2 are docked, the push rod 12 pushes the movable rod 22 to move in the direction away from the first end port of the female connector 21, and at this time the first channel 111 and the second channel 211 are connected; when the male connector assembly 1 and the female connector assembly 2 are separated, the thrust acting on the movable rod 22 disappears, and the first end of the movable rod 22 automatically blocks the port of the first end of the female connector 21 to prevent leakage of the fluid medium in the female connector 21, and at the same time, the second elastic return member 23 is arranged outside the fluid channel and isolated from the fluid channel. During actual use, the fluid medium will not remain in the second elastic return member 23.

[0040] Furthermore, a second sealing block is provided at the first end of the sealing sleeve 24. The second sealing block is sleeved on the first end of the movable rod 22. The second sealing block corresponds to the port at the first end of the female connector 21 and is used to block or open the port at the first end of the female connector 21.

[0041] The second end of the sealing sleeve 24 is a stepped, deformable horn structure, the large-diameter end of which is fixedly connected to the female connector 21. The second elastic return member 23 is located inside the horn structure and is separated from the second channel 211. Through this structural arrangement, the sealing sleeve 24 separates the movable rod 22, the second elastic return member 23, and the second channel 211, preventing the second elastic return member 23 from retaining fluid medium, while also allowing the movable rod 22 to reciprocate.

[0042] Furthermore, the female connector 21 includes a female connector cover 25, and the female connector 21 is provided with a mounting port 212 connected to the second channel 211, the large diameter end of the speaker structure is provided on the mounting port 212, and the female connector cover 25 is fixedly provided on the mounting port 212, and a limiting hole 251 is provided on the female connector cover 25, and the limiting hole 251 is a through hole structure, and a limiting rib 221 is fixedly provided on the movable rod 22, and the limiting rib 221 is provided inside the speaker structure, and the limiting rib 221 is abutted against the small diameter end of the speaker structure, and the second end of the movable rod 22 can be reciprocally inserted into the limiting hole 251, and the first end of the second elastic return member 23 is abutted against the limiting rib 221, and the second end of the second elastic return member 23 is abutted against the female connector cover 25. Through the above-mentioned structural setting, during installation, the sealing sleeve 24 is first sleeved on the outside of the movable rod 22, and then the sealing sleeve 24 is placed into the second channel 211 of the female connector 21 through the installation port 212. The large diameter end of the horn structure is placed on the installation port 212, and the installation port 212 is blocked. The second end of the movable rod 22 is connected to the second elastic reset member 23 and then inserted into the limiting hole 251. The female connector cover 25 is covered to complete the assembly of the female connector assembly 2, which is simple to operate.

[0043] Specifically, the second elastic return member 23 is a second spring. The female connector cover 25 is provided with a limiting post 252. The limiting hole 251 is disposed within the limiting post 252. The first end of the second spring abuts against the limiting rib 221. The second end of the second spring is sleeved outside the limiting post 252 and abuts against the inner side of the female connector cover 25. With the above-described structural arrangement, the second elastic return member 23 is a spring structure, which is simple in structure and easy to install.

[0044] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. An anti-residue joint, comprising a male joint component (1) and a female joint component (2), characterized in that: The male connector assembly (1) includes a male connector (11), a push rod (12), a sleeve (13) and a first elastic return member (14). The male connector (11) includes a first channel (111), the first channel (111) connects the first end and the second end of the male connector (11), the first end of the sleeve (13) is movably connected to the second end of the male connector (11), the first elastic return member (14) is arranged on the outside of the sleeve (13), the first end of the first elastic return member (14) is connected to the male connector (11), the second end of the first elastic return member (14) is connected to the sleeve (13), the first end of the push rod (12) is fixed in the first channel (111), the second end of the push rod (12) extends into the sleeve (13) and corresponds to the port of the second end of the sleeve (13), and is used to block or open the port of the second end of the sleeve (13). The female connector assembly (2) comprises a female connector (21), a second channel (211) is provided in the female connector (21), the second channel (211) connects the first end and the second end of the female connector (21), the port at the first end of the female connector (21) corresponds to the port at the second end of the sleeve (13), When the second end of the sleeve (13) abuts against the first end of the female connector (21), the second end of the push rod (12) moves away from the port at the second end of the sleeve (13), the port at the second end of the sleeve (13) opens, and the first channel (111) is connected to the second channel (211); The first end of the female connector (21) is separated from the second end of the sleeve (13), and the second end of the push rod (12) blocks the port of the second end of the sleeve (13).

2. The anti-residue joint according to claim 1, characterized in that: The sleeve (13) is provided with a fixing frame (132), and the sleeve (13) is provided with a limiting cylinder (15) on its outer shell. The limiting cylinder (15) is fixedly connected to the fixing frame (132), and a limiting sliding groove (151) is provided on the limiting cylinder (15). A slider (112) is fixedly provided on the outer side of the male connector (11), and the second end of the male connector (11) is sleeved on the outer side of the first end of the sleeve (13). The slider (112) is arranged in the limiting sliding groove (151). The first elastic reset member (14) is arranged between the sleeve (13) and the limiting cylinder (15), and the first end of the first elastic reset member (14) is connected to the male connector (11), and the second end of the first elastic reset member (14) is connected to the fixing frame (132).

3. The anti-residue joint according to claim 2, characterized in that: The second end of the sleeve (13) is sleeved with the first end of the female connector (21), the fixing frame (132) is in contact with the first end of the female connector (21), and the second end of the push rod (12) is away from the port of the second end of the sleeve (13).

4. The anti-residue joint according to claim 3, characterized in that: It also includes a first sealing ring (16) and a second sealing ring (17), wherein the first sealing ring (16) is arranged between the male connector (11) and the sleeve (13), and the second sealing ring (17) is arranged between the sleeve (13) and the female connector (21).

5. The anti-residue joint according to claim 2, characterized in that: The first elastic return member (14) is a first spring, the first end of the first spring abuts against the male connector (11), and the second end of the first spring abuts against the fixing frame (132).

6. The anti-residue joint according to claim 1, characterized in that: The push rod (12) comprises a fixing rod (121) and a first sealing block (122); the first end of the fixing rod (121) is fixed in the first channel (111); the second end of the fixing rod (121) is fixedly connected to the first sealing block (122); and the first sealing block (122) is tightly connected to a port at the second end of the sleeve (13).

7. The anti-residue joint according to claim 1, characterized in that: The female connector assembly (2) further includes a movable rod (22), a second elastic reset member (23) and a sealing sleeve (24); the movable rod (22) is reciprocatably arranged in the second channel (211); the first end of the second elastic reset member (23) is connected to the movable rod (22); the second end of the second elastic reset member (23) is connected to the female connector (21); the first end of the movable rod (22) corresponds to the second end of the push rod (12); the sealing sleeve (24) is a compressively deformable structure; the first end of the sealing sleeve (24) is fixed to the movable rod; the second end of the sealing sleeve (24) is fixed to the female connector (21); the second elastic reset member is located inside the sealing sleeve (24) and is isolated from the second channel.

8. The anti-residue joint according to claim 7, characterized in that: The first end of the sealing sleeve (24) is provided with a second sealing block, the second sealing block cooperates with the first end of the movable rod (22), and the second sealing block corresponds to the port of the first end of the female connector (21) and is used to block or open the port of the first end of the female connector (21). The second end of the sealing sleeve (24) is a stepped deformable horn structure, the large diameter end of the horn structure is fixedly connected to the female connector (21), the second elastic reset member (23) is located inside the horn structure, and the second elastic reset member (23) is separated from the second channel (211).

9. The anti-residue joint according to claim 8, characterized in that: The female connector (21) includes a female connector cover (25), the female connector (21) is provided with a mounting port (212) connected to the second channel (211), the large diameter end of the speaker structure is provided on the mounting port (212), and the female connector cover (25) is fixedly provided on the mounting port (212), the female connector cover (25) is provided with a limiting hole (251), the movable rod (22) is fixedly provided with a limiting rib (221), the limiting rib (221) is provided inside the speaker structure, the limiting rib (221) is abutted against the small diameter end of the speaker structure, the second end of the movable rod (22) is reciprocally inserted into the limiting hole (251), the first end of the second elastic reset member (23) is abutted against the limiting rib (221), and the second end of the second elastic reset member (23) is abutted against the female connector cover (25).

10. The anti-residue joint according to claim 9, characterized in that: The second elastic return member (23) is a second spring, a limiting column (252) is provided on the female connector cover (25), the limiting hole (251) is provided in the limiting column (252), the first end of the second spring is against the limiting rib (221), the second end of the second spring is sleeved on the outside of the limiting column (252), and the second end of the second spring is against the inside of the female connector cover (25).

Images