Fluid connector

Abstract

The utility model discloses a fluid connector, and relates to the technical field of fluid communication equipment.The fluid connector comprises at least two valve seats with communication channels and valve elements rotationally arranged on the opposite sides of the valve seats and used for opening and closing the communication channels, a positioning groove is formed in one valve element, and a positioning part is correspondingly arranged on the other valve element; the positioning part extends into the positioning groove and is axially interfered and circumferentially limited with the valve core with the positioning groove after the two valve cores relatively move, and the two valve cores are circumferentially limited to synchronously rotate, so that the communicating part on the valve cores is communicated with the communicating channels on the two valve seats. Synchronous circumferential transmission is formed between the two valve elements, so that associated structures between the valve elements and the valve seat are reduced, and through the synchronous circumferential transmission between the valve elements, the movement precision of the valve elements in the on or off movement can be improved, so that the conditions of dislocation of a communicating part and the like are effectively avoided, and the service life of the valve element is prolonged. Motion errors caused by the fact that the valve seat serves as an intermediate transmission component are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fluid communication, and in particular to a fluid connector. Background Art

[0002] At present, the existing fluid connectors usually include a first connector and a second connector that match each other, and the structures of the two connectors can be the same or different. When the first connector and the second connector are disconnected, the two connectors are sealed separately to disconnect the fluid source and prevent fluid leakage and spraying; when the first connector and the second connector are connected, the valve core in the connector is opened by rotating, sliding, etc., so that the fluid can communicate between the first connector and the second connector.

[0003] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0004] In existing connectors, the valve seat is usually used to drive the valve core to move, resulting in a complex connection structure between the valve seat and the valve core. At the same time, there is an intermediate transmission component (valve seat) between the valve cores, which may cause movement errors between the two valve cores during movement, resulting in misalignment of the connecting parts on the valve core, etc., affecting the normal flow of the fluid.

[0005] Therefore, in view of the above technical problems, how to simplify the connection structure between the valve core and the valve seat and reduce the motion error between the valve cores are technical problems that technical personnel in this field need to solve. Utility Model Content

[0006] The purpose of the present application is to provide a fluid connector that can reduce the associated structure between the valve core and the valve seat and reduce the motion error caused by the valve seat serving as an intermediate transmission component.

[0007] To achieve the above-mentioned purpose, the present application provides a fluid connector, comprising at least two valve seats with connecting channels and a valve core rotatably arranged on opposite sides of the valve seats and used to open and close the connecting channels, one of the valve cores is provided with a positioning groove, and the other corresponding valve core is provided with a positioning portion, the positioning portion extends into the positioning groove, and after the two valve cores move relative to each other, axial interference and circumferential limitation occur with the valve core with the positioning groove, the two valve cores are circumferentially limited to rotate synchronously, so that the connecting portion on the valve core can connect the connecting channels on the two valve seats.

[0008] Optionally, the positioning portion includes a positioning handle and a positioning hook arranged on the positioning handle and bent relative to each other, and the valve core having the positioning groove is provided with an accommodating space for accommodating the positioning hook, so that after the positioning portion and the positioning groove undergo the relative movement, the positioning hook enters the accommodating space and makes the positioning hook abut against the side wall of the accommodating space at least in the axial direction of the valve core.

[0009] Optionally, the positioning handle is located in the positioning groove, and after the positioning hook enters the accommodating space, the positioning handle abuts against a groove wall of the positioning groove at least in a circumferential direction of the valve core.

[0010] Optionally, the accommodating space is located on a side of the valve core facing the valve seat, the positioning hook extends from one side of the positioning groove and extends from the other side of the positioning groove, and the positioning hook is positioned corresponding to the accommodating space.

[0011] Optionally, there are multiple positioning portions and positioning grooves in one-to-one correspondence, and the multiple positioning portions are evenly distributed along the circumference of the valve core.

[0012] Optionally, the positioning handle is arranged on the end face of the valve core facing the corresponding other valve core and extends toward the positioning groove. The positioning hook extends circumferentially along the valve core, and the extension direction of each positioning hook is consistent. There is a clamping space between the positioning hook and the end face of the corresponding valve core so as to clamp on the body of the other valve core at the accommodating space.

[0013] Optionally, a limiting portion is provided on the valve seat, and the limiting portion includes a first limiting protrusion arranged on the outer periphery of the corresponding valve core, and the valve core is provided with a second limiting protrusion embedded between the first limiting protrusion and the valve seat, and the first limiting protrusion and the second limiting protrusion limit the axial direction of the valve core.

[0014] Optionally, an operating unit is further included, wherein the operating unit is connected to the valve core to drive the two valve cores to perform the relative movement and / or drive the two valve cores to transmit circumferentially.

[0015] Optionally, each valve core is provided with a communication portion, and at least after the positioning portion and the positioning groove are in place, the communication portions on the two valve cores are connected.

[0016] Optionally, the relative movement includes relative rotation of the two valve cores.

[0017] Compared with the prior art, the technical solution provided by this application has at least the following beneficial effects:

[0018] The present application reduces the associated structure between the valve core and the valve seat through the transmission connection between the valve cores, and reduces the complexity of the internal structure of the fluid connector;

[0019] Since there is no need to set an associated structure on the valve seat, the processing difficulty and cost of the valve seat and the entire fluid connector are reduced;

[0020] In addition, the synchronous circumferential transmission between the valve cores can improve the movement accuracy between the valve cores when the valve cores are conducting or shutting off, thereby ensuring the alignment accuracy of the connecting parts on the valve cores, thereby effectively avoiding the misalignment of the connecting parts, and reducing the movement error caused by the valve seat as an intermediate transmission component;

[0021] Furthermore, the valve cores can be axially locked or unlocked through the relative movement between the valve cores, so that the connectors can be docked or disconnected, which is convenient for quick disassembly and assembly of the fluid connector and can improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] FIG1 is a schematic diagram of a connection structure between a fluid connector and a fluid passage provided in an embodiment of the present application;

[0024] FIG2 is a schematic diagram of a valve seat and a corresponding valve core arrangement structure provided in an embodiment of the present application;

[0025] FIG3 is a schematic diagram of the cross-sectional structure of FIG2 ;

[0026] FIG4 is a schematic diagram of another valve seat and corresponding valve core arrangement structure provided in an embodiment of the present application;

[0027] FIG. 5 is a schematic diagram of the cross-sectional structure of FIG. 4 .

[0028] In the figure: 1. fluid passage; 2. valve seat; 21. connecting channel; 3. valve core; 31. connecting part; 32. positioning part; 321. positioning handle; 322. positioning hook; 323. clamping space; 33. second limiting protrusion; 34. positioning groove; 35. accommodating space; 36. sealing ring; 4. limiting part; 41. first limiting protrusion; 5. operating part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] When the fluid connector connects the corresponding fluid passages, the first connecting piece is installed on a fluid pipeline (or manifold), and the second connecting piece is installed on another fluid pipeline (or liquid cooling terminal). Through the cooperation of the first connecting piece and the second connecting piece, a fluid connector for controlling the flow or shutoff of the fluid is formed.

[0033] In the process of controlling the flow or shutoff of the fluid by the fluid connector, the valve seat usually drives the valve core to move, that is, the valve seat in the first connecting member is provided with a protruding structure, and the protruding structure is engaged with the valve core in the second connecting member, so as to drive the movement of the valve core in the second connecting member; similarly, the valve seat of the second connecting member can also be provided with a protruding structure, and is engaged with the valve core in the first connecting member, so as to drive the movement of the valve core in the first connecting member, thereby realizing the transmission of the valve core, and finally in the process of the valve core transmission, the connecting part on the valve core is connected or disconnected with the connecting channel on the valve seat, so that the corresponding fluid passage is connected or disconnected. Based on the above situation, the present application proposes to cancel the association structure between the valve core and the valve seat, and directly associate the valve cores to form a synchronous circumferential transmission to reduce the motion error between the valve cores.

[0034] As shown in FIG1 , in this embodiment, a fluid connector is provided, which mainly includes a valve seat 2 and a valve core 3. Generally speaking, according to the characteristics of the fluid connector itself, it is necessary to complete the connection of two or more fluid passages 1 on at least two sides of the fluid connector, so the number of valve seats 2 is at least two. Each valve seat 2 has a communication channel 21. When the fluid passage 1 is connected to the valve seat 2, the fluid passage 1 can maintain communication with the communication channel 21, but whether the communication channels 21 between the valve seats 2 are connected needs to be determined by the corresponding valve core 3.

[0035] Furthermore, the valve core 3 is rotatably arranged on the opposite side of the valve seat 2, and the connection and shutoff of the connecting passage 21 are realized by the rotation of the valve core 3 relative to the valve seat 2. In other words, a valve core 3 is arranged on each valve seat 2. It should be pointed out that the opposite side of the valve seat 2 refers to the side where the two valve seats 2 face each other, but is not limited to the facing end faces of the two valve seats 2, and may also be on the body of the valve seat 2 close to the facing end faces. In other words, there may be no other spacing structure between the valve cores 3, or there may be a partial valve seat 2 structure between the valve cores 3, to ensure that the valve seat 2 does not affect the normal opening and closing of the connecting passage 21 by the valve core 3.

[0036] It should be noted that the number of connecting channels 21 on the valve seat 2 is determined by the number of fluid passages 1. A plurality of other connecting channels 21 arranged in parallel with each other can be extended on one valve seat 2, please refer to Figure 1, and the plurality of connecting channels 21 can correspond one-to-one to the plurality of fluid passages 1. However, for two different valve seats 2 in a fluid connector, the number of connecting channels 21 can be the same or different, and the positions can correspond one-to-one or be staggered. However, it is necessary to ensure that when the connecting portion 31 on the valve core 3 is in a connected state, there is a position that satisfies the connection between the connecting portion 31 and the connecting channel 21, and another position that satisfies the shutoff between the connecting portion 31 and the connecting channel 21.

[0037] In addition, if the number of valve seats 2 is two, then two corresponding valve cores 3 can be directly arranged on the opposite sides of the two valve seats 2, so that the connection between the connecting portion 31 and the connecting channels 21 on the two valve seats 2 is realized through the rotation of the valve core 3 relative to the valve seat 2; if the number of valve seats 2 is greater than two, three valve seats 2 are taken as an example here, then one valve seat 2 needs to be connected to the other two valve seats 2 at the same time, and the three valve seats 2 are sequentially recorded as the first valve seat, the second valve seat and the third valve seat here, and part of the connecting channel 21 on the first valve seat needs to be controlled to open and close with part of the connecting channel 21 on the second valve seat through two valve cores 3, and the other part of the connecting channel 21 on the first valve seat also needs to be controlled to open and close with part of the connecting channel 21 on the third valve seat through two valve cores 3. Similarly, the other part of the connecting channel 21 on the second valve seat and the other part of the connecting channel 21 on the third valve seat are controlled to open and close through two valve cores 3, thereby forming a triangular connection structure, so that the connection relationship between the three valve seats is two-by-two. That is to say, even if the number of valve seats 2 is four, five, six, etc., what needs to be considered here is the connection relationship between two adjacent valve seats 2, which is equivalent to the connection relationship when the number of valve seats 2 is two as mentioned above.

[0038] On this basis, the present application will be introduced by taking two valve seats 2 as an example. When the number of valve seats 2 is greater than two, please refer to the connection relationship between the two valve seats 2. The two valve seats 2 are respectively provided with valve cores 3, one of which is provided with a positioning groove 34, and the other corresponding valve core 3 is provided with a positioning portion 32. Please refer to Figures 2 and 4. The positioning portion 32 can be an integrally formed structure with the valve core 3, or a detachable structure, and no excessive restrictions are made here. The positioning portion 32 extends into the positioning groove 34, and after the two valve cores 3 move relative to each other, it interferes axially and limits circumferentially with the valve core 3 with the positioning groove 34, so that the two valve cores 3 are axially locked, and the two valve cores 3 are circumferentially limited to rotate synchronously, and the connecting portion 31 on the valve core 3 can connect the connecting channels 21 on the two valve seats 2; in other words, when the two valve cores 3 are circumferentially limited to rotate synchronously, there is a position state in which the connecting portion 31 on the valve core 3 connects the connecting channels 21 on the two valve seats 2. It can be understood that the positioning portion 32 extends into the positioning groove 34, which means that the positioning portion 32 on one valve core 3 extends into the corresponding positioning groove 34 on the other valve core 3, so that after the two valve cores 3 move relative to each other, the two valve cores 3 can form an axial interference and circumferential limit relationship with each other, thereby ensuring that the two valve cores 3 can rotate synchronously to achieve the synchronous opening and closing operation of the connecting channels 21 on the corresponding two valve seats 2.

[0039] It can be seen that there are two sets of relative motion relationships in the present application, namely, the rotation of the valve core 3 relative to the valve seat 2 and the relative movement between the two valve cores 3, which are explained here one by one.

[0040] The relative movement between the two valve cores 3 is to make the positioning part 32 and the positioning groove 34 reach a connection state, so that the two valve cores 3 can rotate synchronously in the connection state, and when rotating synchronously, the connecting parts 31 on the two valve cores 3 are in a connection state, so as to ensure the alignment accuracy of the connecting parts 31, and the relative movement between the two valve cores 3 also includes relative rotation and relative sliding. However, whether it is relative rotation or relative sliding, the connection state between the positioning part 32 and the positioning groove 34 means that the two valve cores 3 reach an axial interference and circumferential limit state. At this time, the two valve cores 3 can rotate synchronously in the circumferential limit state, and the axial interference is used to prevent the two valve cores 3 from moving away from each other, so as to achieve axial locking. Of course, the axial and circumferential directions here are based on the valve core 3 being a disc shape, and the valve core 3 is rotated relative to the valve seat 2. Under the premise, the axial and circumferential directions are reflected. It can be understood that the two valve cores 3 can rotate axially synchronously in the circumferential limit state.

[0041] However, the valve core 3 may be in other shapes besides a disc, such as a regular polygon such as a rectangle, and an irregular shape, and no further restrictions are imposed here. However, it should be noted that for shapes besides a disc, the definitions of axial and circumferential directions may be interpreted as follows: axial direction refers to the direction perpendicular to the plane where the valve core 3 is located, and circumferential direction refers to the direction of the valve core 3 around the rotation axis of the valve core 3 during rotation.

[0042] The rotation of the valve core 3 relative to the valve seat 2 occurs after the two valve cores 3 move relative to each other, that is, when the two valve cores 3 meet the condition of synchronous rotation, during the synchronous rotation process, since the valve seat 2 is relatively fixed, the valve core 3 and the valve seat 2 will naturally rotate relative to each other, so that when they rotate to a certain position relative to each other, the connecting portion 31 on the valve core 3 connects the connecting channels 21 on the two valve seats 2.

[0043] In summary, the present application reduces the associated structure between the valve core 3 and the valve seat 2 through the transmission connection between the valve cores 3, thereby reducing the complexity of the internal structure of the fluid connector; since there is no need to set an associated structure on the valve seat 2, the processing difficulty and cost of the valve seat 2 and the entire fluid connector are reduced; in addition, through the synchronous circumferential transmission between the valve cores 3, the movement accuracy of the valve cores 3 when the valve core 3 is turned on or off can be improved, thereby ensuring the alignment accuracy of the connecting part 31 on the valve core 3, effectively avoiding the misalignment of the connecting part 31, and reducing the movement error caused by the valve seat as an intermediate transmission component; furthermore, through the relative movement between the valve cores 3, the valve cores 3 are axially locked or axially unlocked, so that the connecting parts can be connected or disconnected, which is convenient for the rapid disassembly and assembly of the fluid connector and can improve work efficiency.

[0044] Furthermore, in order to achieve the connection state between the positioning part 32 and the positioning groove 34 after the two valve cores 3 move relative to each other, the positioning part 32 here includes a positioning handle 321 and a positioning hook 322 disposed on the positioning handle 321 and relatively bent, please refer to Figure 3. Relative bending means that there is a certain angle between the positioning handle 321 and the positioning hook 322, and the angle here can be a right angle, an acute angle, an obtuse angle or an arc angle. The valve core 3 with the positioning groove 34 is provided with a receiving space 35 for receiving the positioning hook 322, please refer to Figure 5, so that after the positioning part 32 and the positioning groove 34 move relative to each other, the positioning hook 322 enters the receiving space 35, and the positioning hook 322 abuts against the side wall of the receiving space 35 at least in the axial direction of the valve core 3.

[0045] Specifically, before the positioning portion 32 and the positioning groove 34 reach a connected state, the positioning portion 32 needs to be inserted into the positioning groove 34 first. At this time, the positioning portion 32 and the positioning groove 34 are not required to be clamped. After the positioning portion 32 is inserted into place, relative rotation or relative sliding occurs between the two valve cores 3, so that the positioning hook 322 enters the accommodating space 35. At this time, the positioning hook 322 can abut against the side wall of the accommodating space 35 in the axial direction of the valve core 3 to achieve axial interference.

[0046] At the same time, after the positioning hook 322 enters the accommodation space 35, the positioning handle 321 abuts against the groove wall of the positioning groove 34 at least in the circumferential direction of the valve core 3, thereby realizing circumferential limitation. In other words, before the positioning hook 322 enters the accommodation space 35, the positioning handle 321 has a certain reserved space at least in the direction of relative movement with the positioning groove 34, so that the positioning portion 32 can move relative to the positioning groove 34.

[0047] So far, the axial interference and circumferential limit of the two valve cores 3 are realized through the relative movement of the two valve cores 3. It should be pointed out that since the relative movement of the valve core 3 includes relative rotation and relative sliding, the two relative movements are analyzed one by one here.

[0048] When the valve core 3 rotates relatively, the positioning hook 322 also rotates relative to the positioning groove 34 with the rotation axis of the valve core 3 as the center. At this time, due to the existence of the accommodating space 35, the positioning hook 322 will be misaligned with the positioning groove 34 in the axial direction of the valve core 3 and gradually rotate into the accommodating space 35, while the positioning handle 321 is always located in the positioning groove 34 until the positioning handle 321 abuts against the groove wall of the positioning groove 34 to achieve circumferential limiting. At this time, rotating the valve core 3 can drive the other valve core 3 to rotate synchronously.

[0049] Or, when the valve core 3 slides relatively, the positioning hook 322 also slides with the valve core 3 relative to the positioning groove 34. At this time, due to the existence of the accommodating space 35, the positioning hook 322 will be misaligned with the positioning groove 34 in the axial direction of the valve core 3 and gradually slide into the accommodating space 35, while the positioning handle 321 is always located in the positioning groove 34 until the positioning handle 321 abuts against the groove wall of the positioning groove 34 to achieve circumferential limiting. At this time, rotating the valve core 3 can drive the corresponding other valve core 3 to rotate synchronously.

[0050] It should be noted that the accommodation space 35 here only refers to the space where the positioning hook 322 enters the valve core 3 after the positioning portion 32 and the positioning groove 34 move relative to each other. Generally speaking, the accommodation space 35 is set at the valve core 3, which can be a groove opened on the valve core 3, or a hole opened on the valve core 3. If the accommodation space 35 is a groove opened on the valve core 3, then the accommodation space 35 is located on the side of the valve core 3 facing the valve seat 2, and the positioning hook 322 extends from one side of the positioning groove 34 and extends from the other side of the positioning groove 34. At the same time, after the positioning hook 322 extends, it can correspond to the position of the groove. At this time, the valve core 3 only needs to rotate or slide relative to each other, so that the positioning hook 322 can be extended into the groove, so that the groove can interfere with the positioning hook 322 in the axial direction of the valve core 3. If the accommodating space 35 is a hole opened on the valve core 3, the positioning hook 322 extends into from one side of the positioning groove 34, but the positioning hook 322 is not required to extend from the other side of the positioning groove 34. It is only necessary to ensure that the positioning hook 322 can correspond to the position of the hole. At this time, the valve core 3 rotates or slides relative to each other, so that the positioning hook 322 enters the hole, thereby interfering with the positioning hook 322 in the axial direction of the valve core 3 through the hole.

[0051] In addition, when the accommodating space 35 is a groove opened on the valve core 3, if the positioning hook 322 protrudes from the end surface of the valve core 3 at some position after entering the groove, then it is necessary to reserve a part of the reserved space between the valve core 3 and the valve seat 2 for the positioning hook 322 to rotate; in other words, after the positioning hook 322 and the positioning groove 34 are in a connected state, the positioning hook 322 will also rotate synchronously during the synchronous rotation of the two valve cores 3. At this time, if the positioning hook 322 protrudes outside the valve core 3, in order to avoid affecting the normal rotation of the positioning hook 322 and the valve core 3, it is also necessary to reserve a certain space between the valve core 3 and the valve seat 2 to meet the rotation requirements of the positioning hook 322.

[0052] It should be noted that, in the above description, a positioning groove 34 is provided on one valve core 3, and a positioning portion 32 is provided on the corresponding other valve core 3, thereby forming a set of connection structures. However, it is not limited to providing only a positioning groove 34 or a positioning portion 32 on one valve core 3. The positioning groove 34 and the positioning portion 32 may also be provided on the same valve core 3 at the same time, thereby forming two sets of connection structures. However, it is necessary to ensure that the positioning portion 32 on one valve core 3 can cooperate with the corresponding positioning groove 34 and the accommodating space 35 on the other valve core 3.

[0053] In order to improve the connection effect of the two valve cores 3 during the synchronous rotation process, the number of positioning parts 32 and positioning grooves 34 are set to be multiple, and one-to-one corresponding. Please refer to Figures 2 and 4. The multiple positioning parts 32 are evenly distributed along the circumference of the valve core 3, so that the two valve cores 3 are subjected to more uniform force in the axial interference and axial limit connection, thereby ensuring the accuracy of the synchronous rotation of the two valve cores 3.

[0054] On the basis of the above embodiments, with respect to the two relative movement modes of the valve core 3, the present application proposes the following specific arrangement modes of the positioning portion 32 and the positioning groove 34:

[0055] 1. When the valve core 3 rotates relative to

[0056] The positioning handle 321 is arranged on the end face of the valve core 3 facing the corresponding other valve core 3, and extends toward the positioning groove 34. Preferably, the positioning handle 321 is arranged perpendicular to the end face of the valve core 3, and the positioning hook 322 extends circumferentially along the valve core 3, and the extension direction of each positioning hook 322 is consistent, that is, the arrangement method of Figure 2; the positioning groove 34 also extends a certain length circumferentially along the valve core 3, and the contour of the positioning groove 34 is slightly larger than the contour of the positioning hook 322. While ensuring that the positioning handle 321 can extend into the positioning groove 34, the positioning hook 322 can also extend into the positioning groove 34, that is, the arrangement method of Figure 4. After the valve core 3 rotates relative to each other, the positioning hook 322 can gradually enter the accommodating space 35 along the circumference of the valve core 3. At the same time, the positioning handle 321 will gradually approach the side wall of the positioning groove 34 along the circumference of the valve core 3 in the positioning groove 34, and finally achieve circumferential limitation, thereby realizing the rotational clamping of the two valve cores 3.

[0057] Alternatively, the positioning handle 321 is arranged on the end face of the valve core 3 facing the corresponding other valve core 3, and extends toward the positioning groove 34. Preferably, the positioning handle 321 is arranged perpendicular to the end face of the valve core 3, and the positioning hook 322 extends radially along the valve core 3; the positioning groove 34 needs to extend radially and circumferentially along the valve core 3 respectively, and the radially extending part of the positioning groove 34 has a contour slightly larger than the contour of the positioning hook 322, to ensure that the positioning hook 322 can extend into the radially extending part, and the circumferentially extending part of the positioning groove 34 needs to meet the insertion of the positioning handle 321, and at the same time reserve a certain rotation space for the positioning handle 321 to rotate circumferentially along the valve core 3; after the valve core 3 rotates relatively, the positioning hook 322 can gradually enter the accommodating space 35 along the circumference of the valve core 3, and the positioning handle 321 gradually approaches its side wall in the circumferentially extending part of the positioning groove 34, and finally realizes circumferential limitation, thereby realizing the rotational clamping of the two valve cores 3.

[0058] 2. When the valve core 3 slides relatively

[0059] The positioning handle 321 can also be set on the end face of the valve core 3 facing the corresponding other valve core 3, and extend toward the positioning groove 34. Preferably, the positioning handle 321 is set perpendicular to the end face of the valve core 3. The extension direction of the positioning hook 322 can be multiple, and it is sufficient to ensure that it has a certain bending angle with the positioning handle 321. Under this premise, the positioning groove 34 only needs to be roughly consistent with the contour of the positioning hook 322, so that the positioning hook 322 and the positioning handle 321 can be simultaneously extended into the positioning groove 34. It should be noted that if the positioning hook 322 extends radially along the valve core 3, then the positioning groove 34 will also extend radially. At this time, the relative sliding direction of the valve core 3 is also radial, and the positioning handle 321 can directly abut against the groove wall of the positioning groove 34 in the circumferential direction of the valve core 3. It is only necessary to ensure that the positioning handle 321 and the positioning groove 34 have reserved space in the radial direction of the valve core 3.

[0060] Of course, the direction of relative sliding of the valve core 3 is not limited to the radial direction, but can also be relative sliding in other directions, ensuring that the positioning handle 321 and the positioning hook 322 can enter the positioning groove 34, and a certain circumferential sliding space is reserved for the positioning handle 321 on the positioning groove 34, and after sliding, it can achieve circumferential limiting on the groove wall of the positioning groove 34, and at the same time ensure that the positioning hook 322 enters the accommodating space 35 after sliding relative to the positioning groove 34, so as to form a sliding snap connection.

[0061] In order to further improve the connection stability of the two valve cores 3 after being clamped, a clamping space 323 can be set between the positioning hook 322 and the end face of the corresponding valve core 3. That is to say, after the positioning hook 322 is bent relative to the positioning handle 321, there is a certain gap between the positioning hook 322 and the end face of the corresponding valve core 3, and the gap becomes the clamping space 323, so that after the positioning hook 322 enters the accommodating space 35, the clamping space 323 can be clamped on the main body at the accommodating space 35 of the valve core 3, thereby realizing axial locking of the two valve cores 3.

[0062] In addition, for the connecting portion 31 after the relative movement of the two valve cores 3, it is necessary to ensure that it can remain in a connected state after the relative movement, so as to provide technical support for the subsequent synchronous rotation of the valve cores 3 and the opening of the connecting channel 21.

[0063] A limiting portion 4 is also provided on the valve seat 2. Please refer to Figures 1 to 5. The limiting portion 4 can limit the valve core 3 axially on the valve seat 2, so that the valve core 3 is only rotatably set on the valve seat 2. The above-mentioned relative sliding of the two valve cores 3 occurs before the two valve cores 3 maintain synchronous rotation. At this time, the two valve cores 3 are not coaxially set. Through the relative sliding of the valve cores 3, the two valve cores 3 are made coaxial, thereby realizing subsequent synchronous rotation.

[0064] The limiting portion 4 includes a first limiting protrusion 41 arranged on the outer periphery of the corresponding valve core 3, and the valve core 3 is provided with a second limiting protrusion 33 embedded between the first limiting protrusion 41 and the valve seat 2. Please refer to Figures 3 and 5. The first limiting protrusion 41 and the second limiting protrusion 33 are axially limited to the valve core 3, thereby ensuring that the valve core 3 is stationary relative to the valve seat 2 in the axial direction.

[0065] It should be pointed out that one of the first limiting protrusion 41 and the second limiting protrusion 33 can be a continuous annular protrusion, and the corresponding other can be a discontinuous annular protrusion, or both can be set as continuous annular protrusions; of course, the first limiting protrusion 41 and the second limiting protrusion can also be set as discontinuous annular protrusions, but it is necessary to ensure that the raised portion of the first limiting protrusion 41 will not detach from the discontinuity of the second limiting protrusion 33, and similarly, the raised portion of the second limiting protrusion 33 will not detach from the discontinuity of the first limiting protrusion 41, thereby ensuring that the valve core 3 can rotate stably on the valve seat 2.

[0066] In addition, the present application also includes an operating part 5, please refer to Figures 1 and 2, the operating part 5 can be connected to the valve core 3, so as to drive the two valve cores 3 to move relative to each other and / or drive the two valve cores 3 to drive circumferentially. In other words, the operating part 5 can have three functions, first, drive the two valve cores 3 to move relative to each other; second, drive the two valve cores 3 to drive circumferentially, that is, to rotate synchronously in the circumferential direction; third, it can drive the two valve cores 3 to move relative to each other, and drive the two valve cores 3 to rotate synchronously in the circumferential direction after the relative movement.

[0067] The operating part 5 can be an exposed structure, that is, a strip hole (not shown in the figure) is opened on the limiting part 4, one end of the exposed structure is connected to the valve core 3, and the other end extends out of the limiting part 4, so that the relative rotation of the two valve cores 3 and the circumferential synchronous rotation of the two valve cores 3 can be achieved by controlling the operating part 5; and the relative sliding of the two valve cores 3 only requires externally controlling the relative sliding of the two valve seats 2, and does not involve the movement of the valve core 3 itself. Therefore, the relative sliding of the two valve cores 3 can be achieved without the need for the operating part 5.

[0068] It should be pointed out that each valve core 3 is provided with a connecting portion 31, please refer to Figures 1 to 5, in the present application, the connecting portion 31 is a connecting hole, and after the positioning portion 32 and the positioning groove 34 are in place, the connecting holes on the two valve cores 3 are connected. Of course, in order to ensure the alignment accuracy of the connecting holes, before the two valve cores 3 move relative to each other, there will be a certain deviation between the connecting holes on the two valve cores 3, so as to ensure that the connecting holes can be aligned after the valve cores 3 move relative to each other, so that when the two valve cores 3 rotate synchronously, the connecting holes can directly and accurately connect the connecting channels 21 on the two valve cores 3.

[0069] Of course, there can be many forms of the communicating hole, such as straight holes, curved holes and other forms of holes, as long as the alignment accuracy of the holes is ensured during the synchronous rotation of the valve core 3. At the same time, sealing rings 36 can be distributed around the outer periphery of the communicating hole and the circumference of the valve core 3 to ensure that the communicating parts 31 on the two valve cores 3 remain sealed and connected during the synchronous rotation of the two valve cores 3; similarly, a sealing ring 36 can be provided between the valve core 3 and the valve seat 2 to ensure the sealing of the valve core 3 during the rotation. It is understandable that the shape and size of the communicating hole and the communicating channel 21 are substantially the same, or even the same.

[0070] In addition, during the synchronous rotation of the two valve cores 3, the setting of the connecting portion 31 should satisfy the requirement that there is one position to connect the connecting passage 21, and another position to close the connecting passage 21. It can be seen that under the premise of synchronous rotation of the two valve cores 3, the connection and closing of the connecting passage 21 depends on the position of the valve core 3 during the synchronous rotation. Therefore, when the connecting passage 21 is closed, the connecting portion 31 on the valve core 3 will naturally not be connected to the connecting passage 21. Then, for a valve core 3 and a corresponding valve seat 2, the valve core 3 also closes the valve seat 2, thereby ensuring that when the fluid connector is disconnected, the corresponding fluid passage 1 is in a sealed closed state to prevent fluid leakage and injection.

[0071] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0072] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A fluid connector, characterized in that: The invention comprises at least two valve seats (2) having a communication channel (21) and a valve core (3) rotatably arranged on opposite sides of the valve seat (2) and used to open and close the communication channel (21); a positioning groove (34) is arranged on one of the valve cores (3); a positioning portion (32) is arranged on the other valve core (3); the positioning portion (32) extends into the positioning groove (34) and, after the two valve cores (3) move relative to each other, axial interference and circumferential limitation occur with the valve core (3) having the positioning groove (34); the two valve cores (3) are circumferentially limited to rotate synchronously, so that the communication portion (31) on the valve core (3) can be connected to the communication channels (21) on the two valve seats (2).

2. The fluid connector according to claim 1, characterized in that: The positioning portion (32) comprises a positioning handle (321) and a positioning hook (322) arranged on the positioning handle (321) and relatively bent, and a receiving space (35) for receiving the positioning hook (322) is provided at the valve core (3) having the positioning groove (34), so that after the positioning portion (32) and the positioning groove (34) are relatively moved, the positioning hook (322) enters the receiving space (35) and makes the positioning hook (322) abut against the side wall of the receiving space (35) at least in the axial direction of the valve core (3).

3. The fluid connector according to claim 2, characterized in that: The positioning handle (321) is located in the positioning groove (34), and after the positioning hook (322) enters the accommodating space (35), the positioning handle (321) abuts against the groove wall of the positioning groove (34) at least in the circumferential direction of the valve core (3).

4. The fluid connector according to claim 2, characterized in that: The accommodating space (35) is located on the side of the valve core (3) facing the valve seat (2), and the positioning hook (322) extends from one side of the positioning groove (34) and extends from the other side of the positioning groove (34), so that the position of the positioning hook (322) corresponds to that of the accommodating space (35).

5. The fluid connector according to claim 2, characterized in that: The number of the positioning portions (32) and the positioning grooves (34) is multiple and corresponds one to one, and the multiple positioning portions (32) are evenly distributed along the circumference of the valve core (3).

6. The fluid connector according to claim 5, characterized in that: The positioning handle (321) is arranged on the end surface of the valve core (3) facing the corresponding other valve core (3) and extends in the direction of the positioning groove (34). The positioning hook (322) extends along the circumference of the valve core (3), and each positioning hook (322) extends in the same direction. A clamping space (323) is provided between the positioning hook (322) and the end surface of the corresponding valve core so as to be clamped on the body at the accommodating space (35) of the other valve core (3).

7. The fluid connector according to claim 1, characterized in that: A limiting portion (4) is provided on the valve seat (2), the limiting portion (4) comprising a first limiting protrusion (41) provided on the outer periphery of the corresponding valve core (3), the valve core (3) being provided with a second limiting protrusion (33) embedded between the first limiting protrusion (41) and the valve seat (2), the first limiting protrusion (41) and the second limiting protrusion (33) being axially limited to the upper limit of the valve core (3).

8. The fluid connector according to claim 1, characterized in that: It also comprises an operating part (5), wherein the operating part (5) is connected to the valve core (3) to drive the two valve cores (3) to perform the relative movement and / or drive the two valve cores (3) to perform circumferential transmission.

9. The fluid connector according to claim 1, characterized in that: Each valve core (3) is provided with a communication portion (31), and at least after the positioning portion (32) and the positioning groove (34) are in place, the communication portions (31) on the two valve cores (3) are in communication.

10. The fluid connector according to any one of claims 1 to 9, characterized in that: The relative movement includes relative rotation of the two valve cores (3).

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