Fluid connector

Abstract

A fluid connector, comprising a connection end (100), a mating end (200), a stop device (300) and an unlocking member (15). The connection end (100) comprises a first valve seat (2-1) and a first valve (1-1) movably arranged on the first valve seat (2-1). The stop device (300) may move to a stop position so as to limit the relative movement between the first valve (1-1) and a corresponding structure (2-3) on the mating end (200). When the first valve (1-1) moves to a preset position with respect to the first valve seat (2-1), the unlocking member (15) can be driven to an unlocking position so as to drive the stop device (300) to be disengaged from the stop position. By means of the stop device (300), the corresponding structure (2-3) on the mating end (200) first drives the first valve (1-1) to move to the preset position with respect to the first valve seat (2-1), and at the preset position, the unlocking member (15) is driven to the unlocking position, such that the stop device (300) is disengaged from the stop position. Then, the corresponding structure (2-3) may keep moving relative to the first valve (1-1) so as to execute a subsequent detachment operation, such that the detachment operation and a driving operation are orderly executed, effectively solving the problem of a bad order relation between the valve driving and the relative movement of the connection end (100) and the mating end (200).

Description

Fluid connector

[0001] The present application claims priority to the Chinese patent application No. 202410844091.0, filed on June 26, 2024, and entitled "Fluid connector", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of fluid channel connection, and more particularly, to a fluid connector. BACKGROUND

[0003] The fluid connector mainly comprises two connectors, which can be the same or different in structure and are connected to each other by docking to be further connected. For the convenience of description, one connector is generally referred to as a connection end, and the other connector is referred to as a docking end when it is docked with the connection end.

[0004] In the process of implementing the present application, the inventors found that at least the following problems exist: when the connection end and the docking end are connected, it is generally necessary to perform clamping connection, and then push the valve on the opposite side to rotate together. When disassembling, the valve needs to be rotated first to achieve closing, and then the clamping connection is disconnected. However, through long-term research, the inventors found that when disassembling, the valve may be driven to rotate to disconnect the clamping connection first, so that the valve is disconnected from the constraint in advance, resulting in the problem of leakage. SUMMARY

[0005] Therefore, the first object of the present application is to provide a fluid connector which can effectively solve the problem of poor sequence relationship of valve driving and relative movement of the docking end to the connection end.

[0006] In order to achieve the above object, the present application provides the following technical solutions:

[0007] A fluid connector comprises a connection end, a docking end, a stop device and an unlocking member. The connection end comprises a first valve seat and a first valve movably arranged in the first valve seat. The stop device can be operated to a stop position to limit the relative movement of the first valve and the corresponding structure on the docking end. When the first valve moves relative to the first valve seat to a preset position, the unlocking member can be driven to an unlocking position to drive the stop device to disengage from the stop position.

[0008] In the fluid connector, when in use, assuming that the first valve is in a closed position relative to the first valve seat in a preset position state, when the corresponding structure on the docking end drives the first valve to move in the closing direction, the corresponding structure can drive the first valve to move in the closing direction first because the stop device is operated to the stop position. When the first valve moves to the preset position, the unlocking member is driven to the unlocking position at this time to drive the stop device to disengage from the stop position. At this time, the corresponding structure can continue to move relative to the first valve to complete subsequent actions such as disengaging and connecting actions. In the fluid connector, by adding the unlocking member and the stop device, when the first valve moves in the closing position direction, the corresponding structure on the docking end first drives the first valve to move relative to the first valve seat to the preset position through the stop device. At the preset position, the unlocking member is driven to the unlocking position to make the stop device disengage from the stop position. Then, the corresponding structure can continue to move relative to the first valve to perform subsequent disassembly actions, so that the disassembly actions and the above driving actions are performed in order. In summary, the fluid connector can effectively solve the problem of poor sequence relationship of the driving and relative movement of the valve on the connection end by the docking end.

[0009] In some technical solutions, the unlocking member can be pushed to disengage from the unlocking position by the first valve during the rotation of the first valve to disengage from the preset position, so that the stop device can enter the stop position.

[0010] In some technical solutions, the stop device includes a locking hole and a stop pin, one of the locking hole and the stop pin is arranged on the first valve, and the other is arranged on the corresponding structure; when the stop device moves to the stop position, the stop pin and the locking hole are inserted and matched to prevent the first valve and the corresponding structure from moving relative to each other.

[0011] In some technical solutions, the first valve and the corresponding structure are clamped to realize locking in the docking direction; when the first valve is in the preset position, the first valve closes the communication passage on the first valve seat; during the movement of the first valve relative to the first valve seat in the direction of opening the communication passage on the first valve seat, the first valve can drive the unlocking member to move to disengage from the unlocking position.

[0012] In some technical solutions, a blocking member is further included to block the first valve from rotating relative to the first valve seat when the first valve is in the preset position.

[0013] In some embodiments, after the corresponding structure is moved relative to the first valve to complete the clamping, the corresponding structure can be moved relative to the first valve in a preset position to align the passage holes with each other, and when the passage holes are aligned, the locking hole and the stop pin are aligned; the corresponding structure is provided with a pushing part, so that when the corresponding structure is moved relative to the first valve to complete the clamping, the blocking member is moved in a direction away from the blocking state, and when the passage holes are aligned, the blocking member is out of the blocking state.

[0014] In some embodiments, when the corresponding structure is moved relative to the first valve in a preset position to align the passage holes with each other, the corresponding structure and the first valve form a direct or indirect abutting relationship in the opening direction of the first valve.

[0015] In some embodiments, the corresponding structure is provided with a first clamping part, and the first valve is provided with a second clamping part in clamping relationship with the first clamping part; the first clamping part is integrated with the pushing part; when the corresponding structure is moved relative to the first valve in a preset position to align the passage holes with each other, the first clamping part and the first valve form an abutting relationship in the opening direction of the first valve.

[0016] In some embodiments, the docking end comprises a second valve seat and a second valve movably arranged in the second valve seat, and the second valve is the corresponding structure; the second valve seat is provided with an operating structure for moving the second valve.

[0017] In some embodiments, the first valve is rotatably installed in the first valve seat, and the second valve is rotatably installed in the second valve seat; the first clamping part and the second clamping part form a rotary clamping; at least one set of the first clamping part and the second clamping part are a clamping hook and a clamping groove.

[0018] In some embodiments, the first valve is provided with a clamping groove, and a clamping shoulder for abutting with a hook part of the clamping hook is formed on a side of the clamping groove away from the docking end, and a slot is provided, the clamping groove is used to accommodate the hook part of the clamping hook, and the blocking member and the slot slide fit along the rotation axis direction of the first valve; when the hook part extends into the slot and moves in the clamping direction, the hook part and the blocking member can abut through a slope; the blocking member forms a groove for accommodating the hook part.

[0019] In some embodiments, a positioning member is further included for limiting the rotation of the second valve relative to the second valve seat; when the clamping hook is inserted into the clamping groove in the axial direction, a push rod on the first valve can push the positioning member out of the positioning position.

[0020] In some technical solutions, the first valve seat comprises a first valve body and a first valve cover, the first valve is in rotational fit with the inner sidewall of the first valve cover, and the first valve body and the first valve cover are respectively limited on both axial sides of the first valve; the first valve body has a circumscribed communication passage, the first valve has a communication hole corresponding to the communication passage, and the first valve is exposed on the abutting side of the first valve cover;

[0021] The unlocking member is in axial sliding fit with the first valve body and is in axial abutment with the first valve body through a first elastic device;

[0022] The blocking member is in axial sliding fit with the first valve body and is in axial abutment with the first valve body through a second elastic device;

[0023] The first valve is uniformly provided with a plurality of the clamping slots around the rotation axis, at least one clamping slot has the slotting towards one side of the first valve, and the first valve body is provided with the locking hole arranged in the axial direction; when the first valve is in the preset position, the communication hole and the communication passage are arranged in a staggered manner, the unlocking member can extend into the locking hole under the pushing of the first elastic device, and the blocking member can extend into the slotting under the pushing of the second elastic device; the first valve has an axial extension push rod on the abutting side; the locking hole is provided with an axially movable top block, the top block is pushed to a top-out state when the first elastic device pushes the unlocking member into the locking hole, the top block is prevented from moving in the top-out direction when in the top-out state, and the first elastic device is in a pre-tightening state at this time;

[0024] The second valve seat comprises a second valve body and a second valve cover, the second valve is in rotational fit with the inner sidewall of the second valve cover, and the second valve body and the second valve cover are respectively limited on both axial sides of the second valve; the second valve body has a circumscribed communication passage, the second valve has a communication hole corresponding to the communication passage, and the second valve is exposed on the abutting side of the second valve cover; the operation structure is fixed relative to the second valve;

[0025] The stop pin is in axial sliding fit with the second valve and is in axial abutment with the second valve through a third elastic device, and the stop pin extends out of the second valve under the action of the third elastic device;

[0026] The positioning member is in axial sliding fit with the second valve body and is in axial abutment with the second valve body through a fourth elastic device;

[0027] The second valve is uniformly provided with a plurality of clamping hooks corresponding to the clamping slots, and the hook portion of the clamping hook extends in the circumferential direction; the second valve has a positioning hole extending in the axial direction; when the second valve is located at the front position relative to the second valve seat, the fourth elastic device can push the positioning member to be inserted into the positioning hole; when the first valve seat and the corresponding communication passage of the second valve seat are aligned when the second valve is located at the front position, the clamping hook and the clamping slot are aligned.

[0028] During the alignment of the clamping hook and the clamping slot and the process of the hook portion of the clamping hook passing through the clamping slot, the push rod and the positioning member abut to push the positioning member out of the positioning hole.

[0029] During the rotation of the second valve relative to the first valve to complete the clamping process, the clamping hook can push the blocking member to move away from the slot.

[0030] When the second valve is rotated relative to the first valve to align the communication holes with each other, the stop pin is aligned with the corresponding locking hole, the stop pin abuts against the top block and is pushed to the exit state. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Fig. 1 is an exploded structural schematic view of the fluid connector provided by the embodiment of the present application;

[0033] Fig. 2 is a partial cross-sectional structural schematic view of the connection end when the unlocking member is unlocked;

[0034] Fig. 3 is a partial cross-sectional structural schematic view of the connection end when the unlocking member is ejected;

[0035] Fig. 4 is a structural schematic view of the blocking member provided by the embodiment of the present application;

[0036] Fig. 5 is a cross-sectional structural schematic view of the connection end provided by the embodiment of the present application;

[0037] Fig. 6 is an exploded structural schematic view of the connection end provided by the embodiment of the present application;

[0038] Fig. 7 is a cross-sectional structural schematic view of the connection end provided by the embodiment of the present application;

[0039] Fig. 8 is an exploded structural schematic diagram of the connecting end according to an embodiment of the present application;

[0040] Fig. 9 is a partial structural schematic diagram of the valve seat of the connecting end according to an embodiment of the present application;

[0041] Fig. 10 is a structural schematic diagram of the valve of the connecting end according to an embodiment of the present application;

[0042] Fig. 11 is a cross-sectional structural schematic diagram of the fluid connector when the hook passes through the slot according to an embodiment of the present application;

[0043] Fig. 12 is a structural schematic diagram of the hook and the slot forming a rotary connection according to an embodiment of the present application.

[0044] In the drawings, the following signs are used: connecting end 100, docking end 200, stop device 300; first valve 1-1, second valve 1-2, first valve seat 2-1, second valve seat 2-2, corresponding structure 2-3; second clamping part 3, first clamping part 4, slotted part 5, blocking part 6, hook 7, slot 8, operating structure 9, first elastic device 10, second elastic device 11, third elastic device 12, locking hole 13, stop pin 14, unlocking part 15, top block 16, push rod 17, positioning part 18, fourth elastic device 19, sealing ring 20, communication channel 21, communication hole 22; groove 6-1, second slot wall 6-2, first slot wall 6-3; pushing part 7-1, avoiding inclined surface 7-2, handle part 7-3, hook part 7-4; pushing spherical surface 15-1. DETAILED DESCRIPTION

[0045] The fluid connector according to the embodiments of the present application can effectively solve the problem of poor sequence relationship of the valve driving and relative movement of the docking end and the connecting end.

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0047] Please refer to Fig. 1-12, Fig. 1 is the exploded structural schematic diagram of the fluid connector provided by the embodiment of the present application; Fig. 2 is the partial sectional structural schematic diagram of the connection end when the unlocking member is unlocked; Fig. 3 is the partial sectional structural schematic diagram of the connection end when the unlocking member is ejected; Fig. 4 is the structural schematic diagram of the blocking member provided by the embodiment of the present application; Fig. 5 is the sectional structural schematic diagram of the connection end provided by the embodiment of the present application; Fig. 6 is the exploded structural schematic diagram of the connection end provided by the embodiment of the present application; Fig. 7 is the sectional structural schematic diagram of the counter-connection end provided by the embodiment of the present application; Fig. 8 is the exploded structural schematic diagram of the counter-connection end provided by the embodiment of the present application; Fig. 9 is the partial structural schematic diagram of the valve seat of the connection end provided by the embodiment of the present application; Fig. 10 is the structural schematic diagram of the valve of the connection end provided by the embodiment of the present application; Fig. 11 is the sectional structural schematic diagram of the fluid connector when the clamping hook passes through the clamping groove provided by the embodiment of the present application; Fig. 12 is the structural schematic diagram of the clamping hook and the clamping groove forming the rotary connection provided by the embodiment of the present application.

[0048] In some embodiments, the present embodiment provides a fluid connector, specifically, the fluid connector comprises a connection end 100, a counter-connection end 200 and a stop device 300. The connection end 100 and the counter-connection end 200 are connected to realize the positional fixation and the communication between the two in the fully connected state.

[0049] The connection end 100 comprises a first valve seat 2-1 and a first valve 1-1 movably arranged in the first valve seat 2-1, wherein the first valve 1-1 is movably arranged in the first valve seat 2-1 to open and close the communication channel 21 on the first valve seat 2-1, so that the fluid can be communicated with the communication channel 21 on the other connection head when the communication channel 21 is opened, and the fluid cannot be communicated with the communication channel 21 on the other connection head when the communication channel 21 is closed. The movement of the first valve 1-1 can be sliding, rotating, etc., which can be set as needed. It should be noted that the counter-connection end 200 can be provided with a valve seat and a valve, or can be provided without a valve seat and a valve. When provided with a valve seat and a valve, they can be a second valve seat 2-2 and a second valve 1-2 respectively, and the second valve 1-2 is movably arranged in the second valve seat 2-2 to open and close the communication channel 21 on the second valve seat 2-2.

[0050] Wherein the stop device 300 can operate to the stop position to limit the relative movement of the first valve 1-1 and the corresponding structure 2-3 on the docking end 200, so that the corresponding structure 2-3 and the first valve 1-1 are linked to drive the first valve 1-1 to open and close, generally to drive the first valve 1-1 to move to the direction of closing the corresponding communication channel 21. Regarding the corresponding structure 2-3 on the docking end 200: the docking end 200 can be provided with a valve seat and a valve, and at this time the corresponding structure 2-3 on the docking end 200 can be a valve seat or a valve; the docking end 200 can also not be provided with a valve seat and a valve, and the corresponding structure 2-3 on the docking end 200 can be the body of the docking end 200.

[0051] Wherein the stop device 300 has at least two working states, one state is the stop position, and the other state is the disengagement position, and the stop device 300 can operate to the stop position or the disengagement position. Operating to the stop position prevents the relative movement of the first valve 1-1 and the corresponding structure 2-3, at least in the opening or closing direction of the first valve 1-1. The specific stop device 300 is a pin hole cooperation structure, a meshing structure, a magnetic attraction structure, etc., which can drive the first valve 1-1 to move. It should be noted that whether it is a pin hole cooperation or a meshing structure, the combination direction is generally perpendicular to the movement direction of the first valve 1-1 relative to the first valve seat 2-1, and the combination direction of the pin hole is generally the insertion direction of each other. Among them, the magnetic attraction structure can be an electromagnetic structure or a general magnet structure; when it is a magnetic attraction structure, one of the first valve 1-1 and the corresponding structure 2-3 is provided with a permanent magnet, and the other is provided with an iron or ferromagnetic structure, the first valve 1-1 body can adopt a plastic part, and when the permanent magnet and the ferromagnetic structure are attracted, it is located in the stop position, and when it is away from each other, it is away from the stop position. Of course, when the stop device 300 adopts an electromagnet, the electromagnet is arranged on the first valve 1-1 or the corresponding structure 2-3, so as to generate an attractive force when electrified, so as to fix each other, at this time it is located in the stop position.

[0052] The unlocking member 15 is driven to the unlocking position when the first valve 1-1 is moved to the preset position relative to the first valve seat 2-1. That is, when the first valve 1-1 has not reached the preset position, the unlocking member 15 is in a constrained state, which can be constrained by the first valve seat 2-1 or the first valve 1-1, and when the first valve 1-1 is moved to the preset position relative to the first valve seat 2-1 driven by the corresponding structure 2-3, the unlocking member 15 is driven to the unlocking position. The unlocking member 15 can be driven by one of the first valve 1-1 and the first valve seat 2-1, or the first valve 1-1 or the first valve seat 2-1 is no longer prevented or restricted, and is driven by elastic means or other structures. The unlocking member 15 is driven to the unlocking position, which can be a kind of unlocking member 15 released to the unlocking position.

[0053] In the fluid connector described above, when in use, assuming that the first valve 1-1 is in a closed position relative to the first valve seat 2-1 in the preset position, when the corresponding structure 2-3 on the docking end 200 drives the first valve 1-1 to move in the closing direction, the corresponding structure 2-3 can generate a driving force on the first valve 1-1 to ensure that the first valve 1-1 moves in the closing direction first, because the stop device 300 moves to the stop position. When the first valve 1-1 moves to the preset position, the unlocking member 15 is driven to the unlocking position to drive the stop device 300 to move out of the stop position, and the corresponding structure 2-3 can continue to move relative to the first valve 1-1 to complete subsequent actions, such as disengaging and other connection actions. In the fluid connector described above, by adding the unlocking member 15 and the stop device 300, when the first valve 1-1 moves in the closing direction, the corresponding structure 2-3 on the docking end 200 first drives the first valve 1-1 to move relative to the first valve seat 2-1 to the preset position through the stop device 300, and at the preset position, the unlocking member 15 is driven to the unlocking position to make the stop device 300 move out of the stop position, so that the corresponding structure 2-3 can continue to move relative to the first valve 1-1 to perform subsequent disassembly actions, so that the disassembly actions and the above driving actions are performed in order. In summary, the fluid connector described above can effectively solve the problem of poor sequence between valve driving and disconnection between the docking end 200 and the connection end 100.

[0054] In some embodiments, considering that the fluid connector needs to be repeatedly used, therefore, after the first valve 1-1 is moved away from the preset position, it is desirable to automatically achieve that the locking device 300 enters the locking position, and the unlocking member 15 is driven to the unlocking position, i.e., the unlocking member 15 is in the constrained state. Specifically, in the process in which the first valve 1-1 is moved to move away from the preset position, the first valve 1-1 can push the unlocking member 15 to move to the unlocking position, so that the locking device 300 can enter the locking position under the driving of the corresponding structure. Because the unlocking member 15 is moved to the unlocking position, at this time, the locking device 300 can enter the locking position under the driving of the corresponding structure.

[0055] This makes the operation as follows: when the corresponding structure 2-3 on the docking end 200 is first connected to the connecting end 100, then the corresponding structure 2-3 continues to move to drive the first valve 1-1 to move away from the preset position, in the process in which the first valve 1-1 moves away from the preset position, the unlocking member 15 is driven by the first valve 1-1 to the unlocking position, at this time, the locking device 300 enters the locking position. Then, the reverse operation is performed, at this time, because of the locking device 300, the corresponding structure 2-3 can move the first valve 1-1 to the closing direction until the first valve 1-1 is moved to the preset position, at this time, the first valve 1-1 is in the closed state, the unlocking member 15 is driven to the unlocking position to drive the locking device 300 to move away from the locking position, then the corresponding structure 2-3 continues to move, because the locking device 300 no longer constrains the corresponding structure 2-3, the corresponding structure 2-3 can move relative to the first valve 1-1 to complete the disassembly action. As can be seen, in the reverse operation, the closing action can be ensured to be performed first, and then the disassembly action is performed.

[0056] In some embodiments, the locking mode of the locking device 300 can have various modes, which are not limited in particular, and of course the unlocking member 15 should be correspondingly arranged according to the locking device 300. In order to facilitate locking, the locking device 300 can include a locking hole 13 and a locking pin 14, one of which is arranged on the first valve 1-1 and the other of which is arranged on the corresponding structure 2-3. It should be noted that when there are multiple sets of locking holes 13 and locking pins 14, the arrangement directions of the different sets of locking holes 13 and locking pins 14 can be correspondingly arranged as needed. When the locking device 300 moves to the locking position, the locking pin 14 and the locking hole 13 are inserted and matched to prevent the first valve 1-1 and the corresponding structure 2-3 from moving relative to each other.

[0057] Specifically, an active member can be arranged on the corresponding structure 2-3 and the first valve 1-1, one of which is provided with a locking hole 13 and the other of which is provided with a locking pin 14. That is, the active member can be a locking hole 13 or a locking pin 14.

[0058] In some embodiments, the corresponding unlocking piece 15 can be a unlocking pin. In which the first valve 1-1 can push the unlocking piece 15 to move during the first valve 1-1 moving away from the preset position.

[0059] When the first valve is provided with a locking hole 13, and the corresponding structure 2-32-3 is provided with a movable locking pin 14. At this time, the moving direction of the first valve 1-1, that is, the moving direction of the locking hole 13, is generally perpendicular to the moving direction of the unlocking piece 15. Then the hole end of the locking hole 13 and the end of the unlocking piece 15 can be abutted by a slope, that is, at least one has the above-mentioned slope. Specifically, one end of the unlocking piece 15 can be abutted to the first valve seat 2-1 by the first elastic device 10, and the other end has a pushing spherical surface 15-1. When the first valve 1-1 moves to the preset position, the pushing spherical surface 15-1 pushes the top block 16 to move to the first end of the locking hole 13 for ejecting the locking pin 14; and during the first valve 1-1 rotating to move away from the preset position, the first valve 1-1 can act on the pushing spherical surface 15-1 to push the unlocking piece 15 to move away from the second end of the locking hole 13, thereby leaving the locking hole 13.

[0060] In some embodiments, the unlocking piece 15 can be a spherical body to facilitate setting and installation, in which the spherical body cavity provided on the first valve seat 2-1 can be an unlocking piece 15 mounting hole to avoid the unlocking piece 15 moving away from the first valve seat 2-1. Of course, the unlocking piece 15 can also be a cylinder, one end of which is provided with a pushing spherical surface 15-1 or other shaped slope to abut to the top block 16.

[0061] In some embodiments, the first valve 1-1 and the corresponding structure 2-3 can be clamped to realize the locking of the docking direction, that is, the connection. That is, the corresponding structure 2-3 first completes the clamping relative to the first valve 1-1, thereby realizing the clamping connection between the docking end 200 and the connection end 100, and then the corresponding structure 2-3 drives the first valve 1-1 to open to complete the communication between the docking end 200 and the connection end 100, thereby completing the overall connection. Then reverse operation, the corresponding structure 2-3 first drives the first valve 1-1 to close to move, so that the first valve 1-1 moves to the preset position, so that the first valve 1-1 is closed, and then the corresponding structure 2-3 moves relative to the first valve 1-1 to complete the clamping disengagement, that is, the locking of the docking direction is released. In which the docking direction, that is, the corresponding channel connection direction of the docking end 200 and the connection end 100, can also be the parallel direction of the two.

[0062] In some embodiments, the first valve 1-1 is specifically located at a preset position, the first valve 1-1 closes the communication passage 21 on the first valve seat 2-1; during the movement of the first valve 1-1 relative to the first valve seat 2-1 to open the communication passage 21 on the first valve seat 2-1, the first valve 1-1 can push the unlocking part 15 to move out of the unlocking position.

[0063] In some embodiments, in order to ensure that the connection between the corresponding structure 2-3 and the connecting end 100 is completed first during the connection process, the above-mentioned clamping connection is performed, and then the corresponding structure 2-3 continues to move to push the first valve 1-1 to move to open the first valve 1-1, thereby realizing the final connection.

[0064] Based on this, the blocking part 6 is preferably further included herein, which can move to a blocking state to prevent the first valve 1-1 from rotating relative to the first valve seat 2-1 when the first valve 1-1 is located at a preset position. This makes it impossible for the corresponding structure 2-3 to drive the first valve 1-1 to move when the first valve 1-1 is located at a preset position, thereby ensuring that the clamping connection between the corresponding structure 2-3 and the connecting end 100 is completed first.

[0065] After the connection is completed, the blocking part 6 can be driven to move out of the current position, and then the corresponding structure 2-3 drives the first valve 1-1 to move correspondingly.

[0066] In some embodiments, in order to better achieve the above-mentioned effect, the corresponding structure 2-3 can move relative to the first valve 1-1 to align the passage holes with each other after the corresponding structure 2-3 moves relative to the first valve 1-1 to complete the clamping, and the locking hole 13 and the stop pin 14 are aligned when the alignment is completed. At this time, because the corresponding structure 2-3 and the first valve 1-1 are in a communication relationship, the corresponding structure 2-3 rotates, and the corresponding first valve 1-1 rotates to make them rotate synchronously. At this time, the rotation of the first valve 1-1 can make the unlocking part 15 move out of the unlocking position, and because the locking hole 13 and the stop pin 14 are aligned, the stop pin 14 can be inserted into the locking hole 13 to complete the final plug-in connection, which means that the stop device 300 enters the stop position.

[0067] Further, the corresponding structure 2-3 can be provided with a pushing part 7-1, which can move the blocking part 6 in a direction away from the blocking state when the corresponding structure 2-3 moves relative to the first valve 1-1 to complete the clamping, and the blocking part 6 moves out of the blocking state when the passage holes are aligned with each other. Of course, such alignment does not necessarily have to be very high. The first valve 1-1 can be fully opened, and then fully aligned.

[0068] Generally, the pushing part 7-1 can push the blocking part 6 out of the blocking state after the corresponding structure 2-3 and the first valve 1-1 are clamped. The corresponding structure 2-3 is relative to the first valve 1-1. When the corresponding structure 2-3 and the first valve 1-1 are clamped, the corresponding structure 2-3 and the first valve 1-1 are aligned with the locking hole 13 and the locking pin 14. The positions can be the same, or the former can be in front of the latter.

[0069] In use, the corresponding structure 2-3 is first moved relative to the first valve 1-1 to clamp and connect with the first valve 1-1. Then, the corresponding structure 2-3 is moved to align the locking hole 13 and the locking pin 14. At this time or before this time, the pushing part 7-1 pushes the blocking part 6 out of the blocking state to complete the final clamping connection. Then the corresponding structure 2-3 is moved to drive the first valve 1-1 to move away from the preset position by other mechanisms, such as clamping structure. After moving away from the preset position, the unlocking part 15 is driven to move away from the unlocking position, so that the locking pin 14 and the locking hole 13 are clamped and connected. Then, when the corresponding structure 2-3 is reversed, the corresponding structure 2-3 drives the first valve 1-1 to reverse due to the existence of the stop device 300, so that when the first valve 1-1 moves to the preset position, the unlocking part 15 enters the unlocking position, the locking pin 14 and the locking hole 13 are disconnected, and the first valve 1-1 remains in the current position. Then, the corresponding structure 2-3 continues to rotate relative to the first valve 1-1, so that the clamping is disconnected. During the disconnection process, the blocking part 6 gradually enters the blocking state, that is, gradually enters the corresponding hole.

[0070] In some embodiments, the corresponding structure 2-3 can be moved relative to the first valve 1-1 in the preset position to align the passage holes with each other, and the corresponding structure 2-3 and the first valve 1-1 form a direct or indirect abutting relationship in the opening movement direction of the first valve 1-1. When the corresponding structure 2-3 continues to rotate, the first valve 1-1 can be pushed to move in the opening direction by the abutting relationship.

[0071] In some embodiments, in order to facilitate the connection, the corresponding structure 2-3 can be provided with a first clamping part 4, and the first valve 1-1 is provided with a second clamping part 3 which forms a clamping relationship with the first clamping part 4, such as the relative relationship between the first clamping part and the second clamping part 3 can form a rotating clamping. Further, the first clamping part 4 can be integrated with a pushing part 7-1, and a separate pushing part 7-1 can be avoided. When the corresponding structure 2-3 can be relatively located at the first valve 1-1 in the preset position and moved to the aligned channel holes of each other, the first clamping part 4 forms an abutting relationship with the first valve 1-1 along the opening direction of the first valve 1-1. Wherein the valve channel hole refers to the valve communication hole 22, and the valve seat channel hole refers to the valve seat communication channel 21. Specifically, the first clamping part 4 can be a clamping hook 7, and the second clamping part 3 can be a clamping groove 8.

[0072] In some embodiments, the docking end 200 can include a second valve seat 2-2 and a second valve 1-2 movably arranged on the second valve seat 2-2, and the second valve 1-2 is a corresponding structure 2-3. Further, the second valve seat 2-2 can be provided with an operating structure 9 outside for pushing the second valve 1-2 to move. So that the operating structure 9 drives the second valve 1-2 to rotate in a direction, first relative to the first valve 1-1 to complete the clamping, and then under the abutting pushing of the first clamping part 4, the first valve 1-1 is driven to rotate synchronously to open the communication channel 21 of the first valve seat 2-1, and the second valve 1-2 opens the communication channel 21 of the second valve seat 2-2. Then reverse the operating structure 9, so that the second valve 1-2 drives the first valve 1-1 to rotate reversely synchronously through the stop device 300, and then both of them are rotated to the closed position to open the communication channel 21 of the corresponding valve seat, and then the operating structure 9 continues to rotate reversely, and the second valve 1-2 rotates relative to the first valve 1-1 to disengage the clamping.

[0073] In some embodiments, the first valve 1-1 can be rotatably installed on the first valve seat 2-1, and the second valve 1-2 can be rotatably installed on the second valve seat 2-2; the first clamping part 4 and the second clamping part 3 form a rotating clamping, that is, after being axially moved to the position, they are relatively rotated by a small angle to complete the clamping connection. At least one set of first clamping part 4 and second clamping part 3 can be a clamping hook 7, and the other can be a clamping groove 8.

[0074] In some embodiments, the first valve 1-1 can be provided with a clamping groove 8, and a clamping shoulder for abutting with the hook portion of the clamping hook 7 can be formed on the side of the clamping groove 8 away from the docking end 200, and a slot 5 can be provided, wherein the clamping groove 8 is used to accommodate the hook portion 7-4 of the clamping hook 7, and the blocking member 6 and the slot 5 are slidably connected along the rotation axis direction of the first valve 1-1, and the hook portion and the blocking member 6 can abut through the inclined surface when the hook portion extends into the slot 5 and moves in the clamping direction; and the blocking member 6 forms a groove 6-1 for accommodating the hook portion.

[0075] In some embodiments, the groove 6-1 can be formed with opposite inclined surfaces on both sides of the pushing direction, and the inclined directions of the first groove wall 6-3 and the second groove wall 6-2 are opposite, and the inner side of the second groove wall 6-2 is a guide inclined surface for abutting with the pushing portion 7-1. When the pushing portion 7-1 extends into the slot 5, it is located in the groove 6-1, and at the beginning, when the relative movement in the docking direction is completed, the avoidance inclined surface 7-2 on the clamping hook and the first groove wall 6-3 are close to or even abut, and the end of the pushing portion 7-1 is a certain distance or abuts with the second groove wall 6-2 on the front side of the pushing direction, and then when the pushing portion 7-1 follows the second valve 1-2 or the second valve seat 2-2 to move in the pushing direction, the end of the pushing portion 7-1 pushes the second groove wall 6-2 on the front side of the pushing direction, so that the blocking member 6 where the groove 6-1 is located slides vertically to the pushing direction, so as to gradually exit the corresponding slot 5; of course, at this time, the end of the pushing portion 7-1 can also form a guide inclined surface on the front side of the pushing direction, which abuts to the protrusion on the front side of the groove 6-1 (which can be the inclined surface or the end), so as to push the blocking member 6 to slide vertically to the pushing direction.

[0076] In some embodiments, a positioning member 18 can be further included for limiting the rotation of the second valve 1-2 relative to the second valve seat 2-2, and when the clamping hook 7 is inserted into the clamping groove 8 in the axial direction, the push rod 17 on the first valve 1-1 can push the positioning member 18 out of the positioning position, so that the second valve 1-2 can rotate relative to the second valve seat 2-2. When the connection end 100 is not docked, the clamping hook 7 is not inserted into the clamping groove 8 at this time, and the push rod 17 of the first valve 1-1 will not push the positioning member 18, and the positioning member 18 can be reset under the action of the elastic device.

[0077] In some embodiments, for the connection end 100, the first valve seat 2-1 can include a first valve body and a first valve cover, the first valve 1-1 is rotatably connected with the inner wall of the first valve cover, and the first valve body and the first valve cover are respectively limited on both sides of the axial direction of the first valve 1-1; the first valve body has a communication channel 21, the first valve 1-1 has a communication hole 22 corresponding to the communication channel 21, and the first valve 1-1 is exposed on the docking side of the first valve cover;

[0078] The unlocking piece 15 is in axial sliding fit with the first valve body and is in axial abutment with the first valve body through the first elastic device 10;

[0079] The blocking piece 6 is in axial sliding fit with the first valve body and is in axial abutment with the first valve body through the second elastic device 11;

[0080] The first valve 1-1 is uniformly arranged with a plurality of clamping grooves 8 around the rotation axis, at least one clamping groove 8 has a slot 5 towards one side of the first valve 1-1, and the first valve body is provided with a locking hole 13 arranged in the axial direction; when the first valve 1-1 is in a preset position, the relative communication hole 22 and the communication channel 21 are arranged staggered, the unlocking piece 15 can be inserted into the locking hole under the push of the first elastic device 10, and the blocking piece 6 can be inserted into the slot 5 under the push of the second elastic device 11; the first valve 1-1 has an axially extending push rod 17 on the butt joint side; the locking hole 13 is provided with an axially movable top block 16, the first elastic device 10 pushes the unlocking piece 15 into the locking hole 13 to push the top block 16 to a top-out state, and the top block 16 is prevented from moving in the top-out direction when in the top-out state, and at this time the first elastic device 10 is in a pre-tightening state.

[0081] For the butt joint end 200, the second valve seat 2-2 can include a second valve body and a second valve cover, the second valve 1-2 is in rotational fit with the inner side wall of the second valve cover, and the second valve body and the second valve cover are respectively limited on both sides of the second valve 1-2 in the axial direction; the second valve body has an externally connected communication channel 21, the second valve 1-2 has a communication hole 22 corresponding to the communication channel 21, and the second valve 1-2 is exposed on the butt joint side of the second valve cover; the operation structure 9 is fixed relative to the second valve 1-2;

[0082] The stop pin 14 is in axial sliding fit with the second valve 1-2 and is in axial abutment with the second valve 1-2 through the third elastic device 12, and the stop pin 14 is extended out of the second valve 1-2 under the action of the third elastic device 12;

[0083] The positioning piece 18 is in axial sliding fit with the second valve body and is in axial abutment with the second valve body through the fourth elastic device 19;

[0084] The second valve 1-2 is uniformly arranged with a plurality of clamping hooks 7 corresponding to each clamping groove 8 around the rotation axis, and the hook part of the clamping hook 7 extends in the circumferential direction; the second valve 1-2 has a positioning hole extending in the axial direction, and when the second valve 1-2 is located in the front position relative to the second valve seat 2-2, the fourth elastic device 19 can push the positioning piece 18 to insert into the positioning hole; when the second valve 1-2 is located in the front position, the communication channel 21 of the first valve seat 2-1 and the corresponding communication channel 21 of the second valve seat 2-2 are arranged in alignment, and the clamping hook 7 is arranged in alignment with the clamping groove 8;

[0085] In the process of aligning the hook 7 with the card slot 8 and the hook part of the hook 7 passing through the card slot 8, the push rod 17 and the positioning member 18 abut to push the positioning member 18 out of the positioning hole;

[0086] In the process of rotating the second valve 1-2 relative to the first valve 1-1 to complete the clamping process, the hook 7 can push the blocking member 6 to move away from the slot 5;

[0087] When the second valve 1-2 is rotated relative to the first valve 1-1 to align the communication holes 22 with each other, the stop pin 14 is aligned with the corresponding locking hole 13, the stop pin 14 abuts against the top block 16 and is pushed to the exit state.

[0088] In some embodiments, when the docking end 200 and the connecting end 100 are docked, the docking process is mainly as follows:

[0089] Before connection, the connecting end 100 and the docking end 200 are completely separated. In the connecting end 100, the first valve 1-1 is located in the closed position relative to the first valve seat 2-1, i.e. the above-mentioned first position and the preset position, at this time the first valve 1-1 is in the closed state, the blocking member 6 is clamped into the accommodating slot at the card slot 8 to limit the rotation of the first valve 1-1 relative to the first valve seat 2-1. And the unlocking member 15 extends into the locking hole 13, so that the top block 16 is in the ejection state. In the docking end 200, the second valve 1-2 is in the front position relative to the second valve seat 2-2, at this time the first valve 1-1 is in the closed state, and the positioning pin 18 is inserted into the second valve 1-2 under the action of the fourth elastic device 19, preventing the second valve 1-2 from rotating relative to the second valve seat 2-2.

[0090] When docking, first, the hook 7 on the second valve 1-2 and the card slot 8 on the first valve 1-1 are aligned and coaxially arranged, and are arranged side by side in the axial direction, at this time the communication holes 22 on the first valve 1-1 and the communication holes 22 on the second valve 1-2 are staggered. At this time, the communication passages 21 on the first valve seat 2-1 and the communication passages 21 on the second valve seat 2-2 are generally aligned. Then the first valve 1-1 and the second valve 1-2 are brought close along the rotation axis, at this time the hook 7 is inserted into the card slot 8 until the first valve 1-1 and the second valve 1-2 directly or indirectly abut, at this time the push rod 17 on the first valve 1-1 pushes the positioning pin 18 out of the second valve 1-2, at this time the second valve 1-2 is no longer prevented from rotating relative to the second valve seat 2-2, at this time it is considered that the docking is completed. At this time, the stop pin 14 on the second valve 1-2 is constrained by the first valve 1-1 and remains in the retracted state.

[0091] In the process of clamping, after the butt joint is completed, the first valve seat 2-1 and the second valve seat 2-2 are relatively fixed, the operation structure 9 is rotated by a preset angle, and the rotating direction is consistent with the protruding direction of the hook part 7-4 of the clamping hook 7, so that the clamping is completed. When the clamping is completed, the communication hole 22 of the first valve 1-1 and the communication hole 22 of the second valve 1-2 are aligned. Because the positioning pin 18 exits the second valve 1-2, the second valve 1-2 can be rotated relative to the second valve seat 2-2, and because the first valve 1-1 and the first valve seat 2-1 are limited by the blocking piece 6, they will not be rotated relative to the second valve 1-2. With the rotation of the second valve 1-2, there is a clamping hook 7 embedded in the groove 6-1 of the blocking piece 6 on the second valve 1-2, and when the hook part 7-4 of the clamping hook 7 follows the second valve 1-2, it is in contact with the side slope of the groove 6-1, and gradually pushes the blocking piece 6 out of the containing groove, that is, the above-mentioned slot 5. After the second valve 1-2 is rotated by a small angle position, that is, after the preset angle, the second valve 1-2 is relative to the second valve seat 2-2 from the above-mentioned front position to the closed position, and in the closed position, the second valve 1-2 is still in the closed state, at this time: the hook part 7-4 of the clamping hook 7 is in contact with the inner end of the clamping groove 8 to form the locking of the extending direction of the rotating axis, and the corresponding connecting end 100 and the butt joint end 200 are clamped in the axial direction; the handle part 7-3 of the clamping hook 7 is in contact with the corresponding side angle of the clamping groove 8 on the side of the hook part 7-4; the blocking piece 6 is pushed out of the containing groove by the hook part 7-4, so that it no longer interferes with the rotation of the first valve 1-1; the communication hole 22 of the second valve 1-2 and the communication hole 22 of the first valve 1-1 are aligned; at this time, the first valve 1-1 is still in the closed position relative to the first valve seat 2-1. At this time, the stop pin 14 is first constrained by the first valve 1-1, and when the communication hole 22 of the first valve 1-1 is rotated to the communication hole 22 of the second valve 1-2, the stop pin 14 is aligned with the locking hole 13, and because the unlocking piece 15 is located in the locking hole 13, the stop pin 14 cannot enter the locking hole 13 to be braked under the cooperation of the top block 16.

[0092] In the process of opening the valve, the operation structure 9 is continuously driven to rotate, and the second valve 1-2 is pushed by the hook 7 to rotate the first valve 1-1, and the communication hole 22 between the first valve 1-1 and the second valve 1-2 is always aligned until the communication hole 22 of the first valve 1-1, the communication passage 21 of the first valve seat 2-1, the communication hole 22 of the second valve 1-2 and the communication passage 21 of the second valve seat 2-2 are aligned, and the first valve 1-1 and the second valve 1-2 are located in the open position. During the process of rotating the first valve 1-1 by the hook 7 of the second valve 1-2, the first valve 1-1 is pushed away from the above-mentioned closed position, i.e. the above-mentioned preset position, and the unlocking piece 15 is moved to release the locking hole 13. When the communication hole 22 of the first valve 1-1 and the second valve 1-2 is aligned, the locking hole 13 is aligned with the locking hole 13, and under the action of the first elastic device 10, the locking hole 13 is no longer constrained by the unlocking piece 15, so the locking hole 13 can be pushed by the locking hole 13 to enter the locking hole 13. At this time, the first valve 1-1 and the second valve 1-2 are prevented from rotating relative to each other by the cooperation of the locking hole 13 and the locking hole 13.

[0093] In some embodiments, when the docking end 200 and the connecting end 100 are separated, the separation process is mainly as follows:

[0094] Before separation, as described above, the first valve 1-1 and the second valve 1-2 are located in the open position, and the hook 7 on the second valve 1-2 abuts against the slot wall of the first valve 1-1 on the side with the hook 7-4. At this time, the first valve seat 2-1 and the second valve seat 2-2 still maintain a relatively fixed relationship, and at this time the first valve 1-1 and the second valve 1-2 are cooperated by the locking hole 13 and the locking hole 14.

[0095] In the process of closing the valve by reversing, the operation structure 9 is reversely driven to rotate, and the second valve 1-2 is reversely rotated, and the first valve 1-1 is reversely rotated by the cooperation of the locking hole 13 and the locking hole 14.

[0096] Until the first valve 1-1 and the second valve 1-2 are synchronously rotated to the closed position, at this time, because the first valve 1-1 is moved to the closed position, i.e. the above-mentioned preset position, at this time, the unlocking piece 15 is aligned with the locking hole 13, the unlocking piece 15 is pushed out of the stop pin 14 under the action of the first elastic device 10, i.e. by the ejector block 16, at this time, the stop pin 14 no longer restricts the first valve 1-1. At this time, because the first valve 1-1 is moved to the preset position, at this time, the blocking piece 6 is aligned with the corresponding slot 5, at this time, the first valve 1-1 is restricted in the closed position and cannot continue to rotate, the reason for the restriction can be that the force between the unlocking piece 15 and the first valve 1-1, or that the first valve 1-1 and the first valve seat 2-1 are limited, the first valve 1-1 is prevented from continuing to rotate and stays in the closed position.

[0097] Then the operation structure 9 continues to drive the second valve 1-2 to rotate, because the stop pin 14 is pushed out, the first valve 1-1 and the second valve 1-2 are no longer restricted, at this time, the first valve 1-1 remains in the closed position. With the rotation of the second valve 1-2 relative to the first valve 1-1, at this time, the hook 7 is correspondingly rotated relative to the first valve 1-1, the hook 7 moves to the center of the groove 6-1 of the blocking piece 6, the constraint on the blocking piece 6 gradually decreases, until the hook 7 is rotated to the position where the hook part 7-4 is aligned with the card slot 8, at this time, the second valve 1-2 is rotated to the pre-position, and the blocking piece 6 is prevented from entering the slot 5 inside the card slot 8, so as to constrain the relative rotation of the first valve 1-1 and the first valve seat 2-1. At the same time, when the second valve 1-2 is rotated to the pre-position, the positioning pin 18 is aligned with the positioning hole on the second valve 1-2. After the second valve 1-2 is rotated to the pre-position, the second valve 1-2 is restricted and cannot continue to rotate, at this time, the operation structure 9 cannot further drive the second valve 1-2 to rotate.

[0098] Then the first valve seat 2-1 and the second valve seat 2-2 are operated, so that the first valve seat 2-1 and the second valve seat 2-2 are relatively moved along the rotation axis, and the corresponding first valve 1-1 and the second valve 1-2 are relatively moved along the rotation axis, at this time, the push rod 17 on the first valve 1-1 gradually leaves the positioning hole on the second valve 1-2, so that the positioning pin 18 gradually enters the second valve 1-2, until the hook 7 is completely pushed out of the card slot 8, at this time, the positioning pin 18 is inserted into the positioning hole of the second valve 1-2, limiting the relative rotation of the second valve 1-2 and the second valve seat 2-2. Further complete the final limiting.

[0099] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between various embodiments can be referred to each other.

[0100] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fluid connector, characterized in that, The device includes a connecting end (100), a docking end (200), a stop device (300), and an unlocking member (15). The connecting end (100) includes a first valve seat (2-1) and a first valve (1-1) movably disposed on the first valve seat (2-1). The stop device (300) can be operated to a stop position to restrict the relative movement of the first valve (1-1) and the corresponding structure (2-3) on the docking end (200). When the first valve (1-1) moves to a preset position relative to the first valve seat (2-1), the unlocking member (15) can be driven to an unlock position to drive the stop device (300) to disengage from the stop position.

2. The fluid connector according to claim 1, characterized in that, The unlocking component (15) can be pushed by the first valve (1-1) to disengage from the unlocking position during the rotation of the first valve (1-1) to disengage from the preset position, so that the stop device (300) can enter the stop position.

3. The fluid connector according to claim 2, characterized in that, The stop device (300) includes a locking hole (13) and a stop pin (14). One of the locking hole (13) and the stop pin (14) is disposed in the first valve (1-1) and the other is disposed in the corresponding structure (2-3). When the stop device (300) moves to the stop position, the stop pin (14) is inserted into the locking hole (13) to prevent the first valve (1-1) from moving relative to the corresponding structure (2-3).

4. The fluid connector according to any one of claims 1-3, characterized in that, The first valve (1-1) and the corresponding structure (2-3) are engaged to lock the docking direction; when the first valve (1-1) is in the preset position, the first valve (1-1) closes the communication channel (21) on the first valve seat (2-1); during the movement of the first valve (1-1) relative to the first valve seat (2-1) towards opening the communication channel (21) on the first valve seat (2-1), the first valve (1-1) can push the unlocking member (15) to move to disengage from the unlocking position.

5. The fluid connector according to claim 4, characterized in that, It also includes a blocking element (6) so that when the first valve (1-1) is in the preset position relative to the first valve seat (2-1), the blocking element (6) can be moved to a blocking state to prevent the first valve (1-1) from rotating relative to the first valve seat (2-1).

6. The fluid connector according to claim 5, characterized in that, After the corresponding structure (2-3) moves relative to the first valve (1-1) to complete the locking, the corresponding structure (2-3) can move relative to the first valve (1-1) located in a preset position until their channel holes are aligned. When aligned, the locking hole (13) and the stop pin (14) are aligned. The corresponding structure is provided with a pushing part (7-1) to push the blocking member (6) to move in the direction of disengaging from the blocking state during the process of the corresponding structure (2-3) moving relative to the first valve (1-1) to complete the locking. When their channel holes are aligned, the blocking member (6) disengages from the blocking state.

7. The fluid connector according to claim 6, characterized in that, When the corresponding structure (2-3) moves relative to the first valve (1-1) located in a preset position until their channel holes are aligned, the corresponding structure (2-3) and the first valve (1-1) form a direct or indirect contact relationship along the opening direction of the first valve (1-1).

8. The fluid connector according to claim 7, characterized in that, The corresponding structure (2-3) is provided with a first locking part (4), and the first valve (1-1) is provided with a second locking part (3) that forms a locking relationship with the first locking part (4); the first locking part (4) is integrated with the pushing part (7-1); when the corresponding structure (2-3) can move relative to the first valve (1-1) located in a preset position until their channel holes are aligned, the first locking part (4) and the first valve (1-1) form an abutment relationship along the opening direction of the first valve (1-1).

9. The fluid connector according to claim 8, characterized in that, The docking end (200) includes a second valve seat (2-2) and a second valve (1-2) movably disposed on the second valve seat (2-2), the second valve (1-2) being the corresponding structure (2-3); an operating structure (9) for pushing the second valve (1-2) to move is provided on the outside of the second valve seat (2-2).

10. The fluid connector according to claim 9, characterized in that, The first valve (1-1) is rotatably mounted on the first valve seat (2-1), and the second valve (1-2) is rotatably mounted on the second valve seat (2-2); a rotatable engagement is formed between the first locking part (4) and the second locking part (3); at least one of the cooperating first locking part (4) and the second locking part (3) is a hook (7) and the other is a groove (8).

11. The fluid connector according to claim 10, characterized in that, The first valve (1-1) is provided with a slot (8), and a shoulder is formed on the side of the slot (8) away from the docking end (200) for abutting against the hook (7-4) of the hook (7), and a slot (5) is provided. The slot (8) is used to accommodate the hook (7-4) of the hook (7). The blocking member (6) and the slot (5) slide in the direction of rotation axis of the first valve (1-1); and when the hook (7-4) extends into the slot (5) and moves in the snapping direction, the hook (7-4) and the blocking member (6) can abut against each other through the inclined surface; the blocking member (6) forms a groove (6-1) to accommodate the hook.

12. The fluid connector according to claim 11, characterized in that, It also includes a positioning element (18) for restricting the second valve (1-2) from rotating relative to the second valve seat (2-2), wherein when the hook (7) is inserted axially into the slot (8), the push rod (17) on the first valve (1-1) can push the positioning element (18) out of the positioning position.

13. The fluid connector according to claim 12, characterized in that, The first valve seat (2-1) includes a first valve body and a first valve cover. The first valve (1-1) is rotatably engaged with the inner wall of the first valve cover. The first valve body and the first valve cover are respectively limited on both axial sides of the first valve (1-1). The first valve body has an externally connected communication channel (21). The first valve (1-1) has a communication hole (22) corresponding to the communication channel (21) of the first valve body. The first valve (1-1) is exposed on the mating side of the first valve cover. The unlocking component (15) slides axially with the first valve body and abuts against the first valve body axially through the first elastic device (10); The blocking element (6) slides axially with the first valve body and abuts against the first valve body axially through the second elastic device (11); The first valve (1-1) has a plurality of slots (8) evenly arranged around its rotation axis. At least one slot (8) has a groove (5) on the side facing the first valve (1-1). The first valve body is provided with a locking hole (13) arranged axially. When the first valve (1-1) is in the preset position, the connecting hole (22) of the first valve (1-1) and the connecting channel (21) of the first valve body are staggered. The unlocking member (15) can extend into the locking hole (13) under the push of the first valve (10) of the first elastic device. The blocking member (6) can extend into the slot (5) under the push of the second elastic device (11); the first valve (1-1) has an axially extending push rod (17) on the docking side; the locking hole (13) is provided with an axially movable top block (16), when the first elastic device (10) pushes the unlocking member (15) into the locking hole (13), it pushes the top block (16) into the ejection state, and the top block (16) is prevented from moving in the ejection direction by the locking hole (13) when it is in the ejection state, and at this time the first elastic device (10) is in the pre-tightened state; The second valve seat (2-2) includes a second valve body and a second valve cover. The second valve (1-2) is rotatably engaged with the inner wall of the second valve cover. The second valve body and the second valve cover are respectively limited on both axial sides of the second valve (1-2). The second valve body has an externally connected communication channel (21). The second valve (1-2) has a communication hole (22) corresponding to the communication channel (21) of the second valve body. The second valve (1-2) is exposed on the mating side of the second valve cover. The operating structure (9) is fixed relative to the second valve (1-2). The stop pin (14) slides axially with the second valve (1-2) and abuts against the second valve (1-2) axially through the third elastic device (12), and the stop pin (14) extends out of the second valve (1-2) under the action of the third elastic device (12); The positioning element (18) slides along the direction with the second valve body and abuts against the second valve body axially through the fourth elastic device (19); The second valve (1-2) has a plurality of hooks (7) evenly arranged around the rotation axis, each corresponding to one of the slots (8). The hook portion (7-4) of the hook (7) extends circumferentially. The second valve (1-2) has a positioning hole extending axially. When the second valve (1-2) is in the front position relative to the second valve seat (2-2), the fourth elastic device (19) can push the positioning member (18) into the positioning hole. When the second valve (1-2) is in the front position, and the connecting channel (21) of the first valve seat (2-1) and the corresponding connecting channel (21) of the second valve seat (2-2) are aligned, the hook (7) is aligned with the slot (8). During the process of the hook (7) being aligned with the slot (8) and the hook portion (7-4) of the hook (7) passing through the slot (8), the push rod (17) abuts against the positioning member (18) to push the positioning member (18) away from the positioning hole; During the process of the second valve (1-2) rotating relative to the first valve (1-1) to complete the engagement, the hook (7) can push the blocking member (6) to move in the direction of disengaging from the slot (5); When the second valve (1-2) rotates relative to the first valve (1-1) until their connecting holes (22) are aligned, the stop pin (14) is aligned with the corresponding locking hole (13), and the stop pin (14) abuts against the top block (16) and is pushed to the retracted state.

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