Fluid connector and connection end thereof

Abstract

A fluid connector and a connection end thereof. The connection end (100) of the fluid connector comprises a valve seat (1), a valve (2) and a locking pin (3), wherein the valve (2) rotates relative to the valve seat (1) to achieve opening and closing; the locking pin (3) comprises a pin portion (31) and an operating portion (32); when the pin portion (31) moves axially to a limiting state, the valve (2) can be prevented from moving relative to the valve seat (1), and the operating portion (32) is exposed and can drive the pin portion (31) to move out of the limiting state; and the operating portion (32) is exposed from a face-away surface (11) of the valve seat (1) facing away from a coupling surface (12) and is located in a radial outer contour (13) of the valve seat (1). The position design of the operating portion can effectively reduce the transverse dimension of the connection end.

Description

Fluid connectors and their connecting ends

[0001] This application claims priority to Chinese Patent Application No. 202421855734.3, filed on July 31, 2024, entitled "Fluid Connector and Connecting End Thereof", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of fluid connection technology, and more specifically, to a fluid connector, and further to a fluid connector including the aforementioned connection end. Background Technology

[0003] Fluid connectors generally consist of a connecting end and a mating end, which are mated together to establish connectivity between their respective channels. In practical applications, some installation environments have relatively strict requirements on the lateral dimensions of the connecting end.

[0004] In the process of developing this application, the inventors discovered at least the following problem in the prior art: how to effectively control the lateral dimensions of the connection end.

[0005] Application content

[0006] In view of this, the first objective of this application is to provide a connection end of a fluid connector that can effectively solve the problem of the large lateral dimension of the connection end of current fluid connectors. The second objective of this application is to provide a fluid connector including the above-mentioned connection end.

[0007] To achieve the first objective mentioned above, this application provides the following technical solution:

[0008] A fluid connector includes a valve seat, a valve, and a locking pin. The valve rotates relative to the valve seat to open and close. The locking pin includes a pin portion and an operating portion. When the pin portion moves axially to a restricted state, it can prevent the valve from moving relative to the valve seat. The operating portion is exposed and can drive the pin portion to move out of the restricted state. One end face of the valve seat in the axial direction is a mating surface for mating with a mating end. The operating portion is exposed on the surface of the valve seat opposite to the mating surface and is located within the radial outer contour of the valve seat.

[0009] When using the connection end of the aforementioned fluid connector, align its mating surface with the mating end to complete the connection. When the locking pin is in the restricted state, it can be disengaged by operating the operating part, allowing the valve to rotate. Since the operating part protrudes from the side opposite the mating surface and does not exceed the radial outer contour of the valve seat, it avoids enlarging the overall radial outer contour of the connection end, thus effectively reducing the lateral dimension of the connection end. In summary, the connection end of this fluid connector effectively solves the problem of the large lateral dimension of current fluid connector connection ends.

[0010] In some technical solutions, the operating part is fixedly connected to the pin so that the pin can be pulled axially away from the mating surface to move out of the restricted state.

[0011] In some technical solutions, the operating part has an annular groove for embedding the force-applying part.

[0012] In some technical solutions, the valve seat is provided with an axially extending mounting hole, one end of which extends to the opposite surface of the valve seat. The opposite surface faces in the opposite direction to the mating surface. The pin is inserted into the mounting hole and extends to the opposite surface to connect the operating part.

[0013] In some technical solutions, the valve has a locking hole that mates with the pin, so that when the pin moves axially to enter the locking hole, the pin is in the restricted state.

[0014] In some technical solutions, a limiting shoulder is also included. The pin is provided with a shoulder, and when the pin moves axially to exit the restricted state, the pin can rotate until the shoulder is opposite to the limiting shoulder, so as to prevent the pin from moving to the restricted state.

[0015] In some technical solutions, a guide structure is also provided opposite to the limiting shoulder. The pin is provided with a mating structure that cooperates with the guide structure. At least one of the mating structure and the guide structure is a guide slope, so as to guide the pin to rotate to the shoulder to avoid the limiting shoulder when the pin moves axially away from the valve.

[0016] In some technical solutions, the pin and the locking hole opening have a matching bevel to guide the pin to move axially when the valve is rotated; when the shoulder and the limiting shoulder abut against each other, the end of the pin is axially aligned with the opening of the locking hole so that when the valve is rotated, the pin can be pushed to move axially, thereby completing the guidance of the guiding structure on the mating structure.

[0017] In some technical solutions, a sleeve structure located in the mounting hole and fixed relative to the valve seat is also included; the pin includes a cylindrical rod and a protrusion on one side of the cylindrical rod; in the axial direction of the pin, one side of the protrusion is the shoulder, and the other side is the mating structure; the sleeve structure has a cylindrical hole that mates with the cylindrical rod and a sliding groove that slidably mates with the protrusion, one side wall of the sliding groove is provided with a groove, one side wall of the groove in the axial direction of the pin is the limiting shoulder, and the other side wall in the axial direction is the guiding structure.

[0018] In some technical solutions, a plug that is threaded into the wall of the mounting hole is also included. The operating part is threadedly connected to the pin. The pin passes through the plug. The sleeve structure is disposed inside the plug. An elastic element is disposed between the pin and the plug to prevent the pin from exiting the restricted state. The operating part can abut against the opposing surface.

[0019] To achieve the second objective mentioned above, this application also provides a fluid connector, which includes any of the aforementioned connecting ends and a mating end, wherein the mating end and the connecting end are mated and connected. Since the aforementioned connecting ends have the above-mentioned technical effects, the fluid connector having such connecting ends should also have corresponding technical effects. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 is a cross-sectional structural diagram of the fluid connector provided in an embodiment of this application;

[0022] Figure 2 is a schematic diagram of the connection end provided in an embodiment of this application;

[0023] Figure 3 is a structural schematic diagram of the corresponding part of the locking pin provided in an embodiment of this application from one perspective;

[0024] Figure 4 is a structural schematic diagram of the corresponding part of the locking pin provided in an embodiment of this application from another perspective.

[0025] The following are labeled in the attached diagram: Connecting end 100, mating end 200; Valve seat 1, Valve 2, Locking pin 3, Sleeve structure 4, Plug 5, Elastic element 6; Reverse surface 11, Mating surface 12, Radial outer contour 13, Mounting hole 14; Locking hole 21, Opening 22; Pin 31, Operating part 32, Annular groove 33, Shoulder 34, Mating structure 35, Protrusion 36, Cylindrical rod part 37; Limiting shoulder 41, Guide structure 42, Slide groove 43, Groove 44. Detailed Implementation

[0026] This application discloses a connection end for a fluid connector to effectively solve the problem of large lateral dimensions of the connection end of current fluid connectors.

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Please refer to Figures 1-4. Figure 1 is a cross-sectional structural diagram of the fluid connector provided in the embodiment of this application; Figure 2 is a structural diagram of the connection end provided in the embodiment of this application; Figure 3 is a structural diagram of the corresponding part of the locking pin provided in the embodiment of this application from one perspective; Figure 4 is a structural diagram of the corresponding part of the locking pin provided in the embodiment of this application from another perspective.

[0029] In some embodiments, this embodiment provides a connecting end 100 of a fluid connector for mating with a mating end 200. For example, the valve seat 1 or valve 2 of the connecting end 100 is rotatably connected to the mating end 200. Specifically, the valve seat 1 or valve 2 of the connecting end 100 can be rotatably connected to the valve seat 1 or other structures of the mating end 200. A locking pin 3 is provided on the connecting end 100, the pin portion 31 of which can extend and retract along the rotation axis of the valve 2 to prevent the valve 2 from rotating relative to the valve seat 1 in a restricted state, which can be direct or indirect. The operating portion 32 on the locking pin 3 is located on one side of the valve seat 1 in the axial direction and within the radial outer contour 13 of the valve seat 1. By positioning the operating portion 32 on one side of the valve seat 1 in the axial direction, it avoids protruding beyond the radial outer contour 13 of the valve seat 1, so that the radial dimension of the connecting end 100 will not become excessive due to the protrusion of the operating portion 32.

[0030] In some embodiments, the fluid connector provided in this context may include two mating connection ends 100, which may have identical structures or different structures; for example, a locking pin 3 may be provided on only one connection end 100. For ease of description, one of the connection ends 100 may be a mating end 200, and the locking pin 3 may or may not be provided. In some embodiments, when the locking pin 3 is axially movable to a restricted state, it can prevent the valves 2 of the two connection ends 100 from rotating relative to their corresponding valve seats 1.

[0031] In the connecting end 100, the locking pin 3 directly or indirectly prevents the valve 2 from rotating relative to the valve seat 1. Specifically: when the docking end 200 and the connecting end 100 are connected, when the valve 2 of the connecting end 100 and the valve seat 1 of the docking end 200 are relatively fixed, the locking pin 3 can be directly inserted into the valve seat 1 of the docking end 200 to prevent the valve seat 1 of the docking end 200 and the valve seat 1 of the connecting end 100 from rotating relative to each other, thus indirectly preventing the valve 2 of the connecting end 100 from rotating relative to the valve seat 1 of the connecting end 100; or, in the docking end 200... When 00 is connected to the connecting end 100, and the valve 2 of the connecting end 100 and the valve 2 of the docking end 200 are relatively fixed, the locking pin 3 can be directly inserted into the valve 2 of the docking end 200 to prevent the valve 2 of the docking end 200 and the valve seat 1 of the connecting end 100 from rotating relative to each other. This indirectly prevents the valve 2 of the connecting end 100 from rotating relative to the valve seat 1 of the connecting end 100. Alternatively, the locking pin 3 can be directly inserted into the valve 2 of the connecting end 100 to directly prevent the valve 2 of the connecting end 100 from rotating relative to the valve seat 1 of the connecting end 100.

[0032] In some embodiments, at least one of the connection ends 100 mainly includes a valve seat 1 and a valve 2, wherein the valve 2 rotates relative to the valve seat 1 to achieve opening and closing. Specifically, the valve 2 is capable of rotating between closing the communication channel of the valve seat 1 and opening the communication channel. The rotation may be about an axis extending along the mating direction of the connection end 100. In the closed position, the physical portion of the valve 2 blocks one end or the middle of the communication channel, preventing fluid from flowing from one end of the communication channel to the other; while in the open position, i.e., the communication channel is opened and no longer blocked, fluid can flow from one end of the communication channel to the other and out.

[0033] In some embodiments, at least one of the valve seats 1 at the connecting end 100 is provided with a locking pin 3. The locking pin 3 mainly includes a pin portion 31 and an operating portion 32 capable of moving the pin portion 31. When the pin portion 31 moves axially to the restricted state, it can directly or indirectly prevent the valve 2 from moving relative to the valve seat 1. Specifically, the pin portion 31 can be slidably connected to the valve seat 1 along the axial direction of the valve 2, and a locking hole 21 is provided on the valve seat 1 or the mating end 200 to limit the movement in the restricted state. At this time, the front part of the pin portion 31 is inserted axially into the locking hole 21 to restrict rotation.

[0034] The operating part 32 is exposed on the outside to facilitate operation by hand; that is, a person can act on the operating part 32. It is understood that the exposed operating part 32 allows the pin 31 to move to a freed state by operating it. The operating part 32 and the pin 31 can be fixedly connected or connected by a transmission structure.

[0035] One end face of the valve seat 1 along the axial direction is a mating surface 12 for mating with the mating end 200; correspondingly, the operating part 32 is exposed on the side of the valve seat 1 away from the mating surface 12, to distinguish it from being exposed on the radially outer side. By being exposed on the side away from the mating surface 12, the operating part 32 can be located within the radially outer contour 13 of the valve seat 1.

[0036] The surface of the valve seat 1 that faces away from the mating surface 12 can be referred to as the facing surface 11 for convenience. The facing surface 11 faces in the opposite direction to the mating surface 12, and its direction is the opposite extension direction of the rotation axis. The mating surface 12 refers to the end face where the mating ends 200 are connected. It should be noted that the facing surface 11 can be an axial end face or located at the midpoint between the two ends. For example, if the valve seat 1 forms a stepped structure in the direction away from the mating surface 12, creating a stepped surface, this can serve as the aforementioned facing surface 11.

[0037] The operating part 32 is located within the radial outer contour 13 of the valve seat 1. This means that, in the radial direction, the distance between the outermost side of the operating part 32 and the axis is not greater than the distance between the outer contour of the valve seat 1 and the axis, so that the operating part 32 no longer protrudes radially. The operating part 32 is positioned on the opposing surface 11, utilizing the radially extending space of the opposing surface 11, allowing the operating part 32 to be placed radially inward. Alternatively, since the opposing surface 11 is away from the mating end 200, there may be more operable working space. The movement of the operating part 32 is not required; it can be rotation, in which case the operating part 32 and the pin 31 are screwed together; other transmission methods are also possible; or the operating part 32 and the pin 31 can be relatively fixed, in which case the operating part 32 moves axially to drive the pin 31 to move axially, thus exiting the restricted state.

[0038] In some embodiments, when using the connecting end 100 of the fluid connector described above, its mating surface 12 is mated with the mating end 200 to complete the connection. When the locking pin 3 is in the restricted state, the locking pin 3 can be operated by the operating part 32 to disengage from the restricted state, so that the valve 2 can rotate. Since the operating part 32 is exposed on the side away from the mating surface 12 and does not exceed the radial outer contour 13 of the valve seat 1, the operating part 32 can avoid expanding the radial outer contour 13 of the entire connecting end 100, thereby effectively reducing the lateral dimension of the connecting end 100. In summary, the connecting end 100 of this fluid connector can effectively solve the problem of the large lateral dimension of the connecting end 100 of current fluid connectors.

[0039] In some embodiments, the operating part 32 is preferably fixedly connected to the pin part 31 so that the pin part 31 can be pulled axially away from the mating surface 12 to move out of (disengage from) the restricted state. Compared with other movements of the operating part 32, this avoids the use of complex transmission structures and avoids radial movement of the operating part 32, thereby reducing the constraint of radial space. The fixed connection between the operating part 32 and the pin part 31 can be a detachable fixed connection or an integral molding, which can be set according to the needs.

[0040] In some embodiments, an elastic element 6 is generally provided in the connecting end 100 for ease of operation. The main function of the elastic element 6 is to prevent the pin 31 from moving in the direction of disengaging from the locking hole 21, so that when the pin 31 is out of the restricted state, force is stored so that, without other constraints, the stored force of the elastic element 6 can push the pin 31 into the restricted state. The elastic element 6 is such as a spring, an elastic body, or other elastic element. Specifically, the elastic element 6 can be sleeved on the pin 31, with one end abutting against the shoulder of the pin 31 and the other end directly or indirectly abutting against the valve seat 1.

[0041] In some embodiments, to facilitate applying a pushing force to the operating part 32, a groove 44 may be formed on the operating part 32, particularly on the radially outer side of the operating part 32, so that during use, the hand, especially the fingernail, can be inserted into the groove 44 to facilitate pushing the operating part 32. Furthermore, the operating part 32 may have an annular groove 33 for embedding a force-applying part, such as the fingertip. However, considering size limitations, the size of the annular groove 33 is generally limited, such as being only suitable for embedding a human fingernail to facilitate force application. The center line of the annular groove 33 is preferably parallel to or coincides with the axis. The cross-section of the annular groove 33 may be V-shaped, square, or other corresponding shapes. Correspondingly, an anti-slip textured surface may also be formed on the surface of the operating part 32, and the groove 44 is formed on this anti-slip textured surface.

[0042] In some embodiments, to facilitate the installation of the locking pin 3, a mounting hole 14 extending axially along the valve 2 is generally provided on the valve seat 1, wherein one end of the mounting hole 14 extends to the opposing surface 11 of the valve seat 1, and the pin 31 is inserted into the mounting hole 14 and extends to the opposing surface 11 to connect the operating part 32. The opposing surface 11 faces in the opposite direction to the mating surface 12, that is, the opposing surface 11 and the mating surface 12 are opposite to each other.

[0043] In some embodiments, the operating part 32 may be able to abut against the opposing surface 11, so that the operating part 32 is limited by the opposing surface 11 to limit the entire locking pin 3 from extending too far forward, so as to maintain a suitable limiting state, so as to achieve the limiting effect and meet the strength requirements.

[0044] In some embodiments, preferably for the same connecting end 100, the valve seat 1 is equipped with the aforementioned locking pin 3, i.e., the aforementioned mounting hole 14 is provided. The cooperating valve 2 has a locking hole 21 that mates with the pin 31, so that when the pin 31 moves axially to enter the locking hole 21, the pin 31 is in a restricted state. By directly restricting the rotation of the valve 2 relative to the valve seat 1, the valve 2 is kept in an open or closed state, generally used to keep the valve 2 in the open state. For the mating end 200, when the valve seat 1 of the mating end 200 and the valve 2 of the connecting end 100 are restricted from relative rotation by the plug-in structure, i.e., when the locking pin 3 prevents the valve 2 of the connecting end 100 from rotating relative to the valve seat 1 of the connecting end 100, the valve seat 1 of the connecting end 100 can be indirectly prevented from rotating relative to the valve seat 1 of the mating end 200, i.e., the relative rotation of the two can be prevented to disengage the rotational engagement, so that the mating end 200 and the connecting end 100 remain in a rotationally engaged state.

[0045] In some embodiments, when the operating part 32 of the locking pin 3 is operated to exit the restricted state, the locking pin 3 generally tends to return to its original position under the action of the elastic member 6. If the operator's fingers continue to apply force, it will cause a lot of inconvenience. If the connecting end 100 and the mating end 200 are disengaged at this time, it will be inconvenient to operate. Therefore, a limiting shoulder 41 is preferably included here, and correspondingly, a stop shoulder 34 is provided on the pin 31. When the pin 31 moves axially to the exit restricted state, the pin 31 can rotate until the stop shoulder 34 is opposite to the limiting shoulder 41, so that the limiting shoulder 41 prevents the pin 31 from moving to the restricted state. This can be used to overcome the elastic force of the elastic member 6 and keep it in the exited state, so that it is no longer necessary to keep it in the exited state by the operator. The limiting shoulder 41 can be directly provided on the valve seat 1 or provided on other structures that are fixed relative to the valve seat 1.

[0046] To achieve the engagement of the aforementioned limiting shoulder 41 and stop shoulder 34, one is typically positioned on a protrusion, while the other is positioned in a laterally open groove 44. "Laterally" refers to a direction perpendicular to the axial direction. In the axial direction, one side wall of the laterally open groove 44 serves as either the stop shoulder 34 or the limiting shoulder 41, while the corresponding side wall of the protrusion in the axial direction serves as the other of the stop shoulder 34 and the limiting shoulder 41. Alternatively, the limiting shoulder 41 can be positioned on a protrusion, and the axial side wall of the laterally open groove 44 can serve as the stop shoulder 34; this arrangement is the opposite of the arrangement shown in the attached diagram.

[0047] In some embodiments, when the locking pin 3 is in the unrestricted state and rotates to the point where the shoulder 34 and the limiting shoulder 41 are opposite each other, even if the elastic member 6 is in action, it cannot move to the restricted state because of the obstruction of the limiting shoulder 41. Only when the locking pin 3 rotates in the opposite direction can the shoulder 34 and the limiting shoulder 41 no longer be opposite each other, but be staggered. At this time, the shoulder 34 avoids the limiting shoulder 41, so that the locking pin 3 is no longer blocked by the limiting shoulder 41, so that the locking pin 3 can move forward and enter the restricted state under the action of the elastic member 6.

[0048] Generally, when the shoulder 34 abuts against the limiting shoulder 41, the operator no longer needs to act on the operating part 32, allowing the operator to free up more of their hand space to rotate the valve 2 relative to the valve seat 1. This can be achieved indirectly by directly rotating the connecting end 100 and the mating end 200 relative to each other. After the valve 2 rotates to a certain angle, the locking hole 21 and the pin 31 are misaligned. When the locking hole 21 aligns with the pin 31 again later, it is desirable that the pin 31 automatically enters the locking hole 21 under the action of the elastic element 6. Therefore, before the locking hole 21 and the pin 31 align again, the locking pin 3 needs to rotate back to misalign the shoulder 34 with the limiting shoulder 41, i.e., the former avoids the latter. This releases the constraint of the limiting shoulder 41, allowing the locking pin 3 to enter the restricted state under the action of the elastic element 6.

[0049] To avoid manually rotating the pin 31 backwards, a guide structure 42 is preferably included here, which is opposite to the limiting shoulder 41. The pin 31 is provided with a mating structure 35 that cooperates with the guide structure 42. At least one of the mating structure 35 and the guide structure 42 is a guide slope, so that when the pin 31 moves axially away from the valve 2, it is guided to rotate to the shoulder 34 to avoid the limiting shoulder 41. Correspondingly, a lifting structure can be provided on the valve 2, so that when the valve 2 rotates, the lifting structure pushes the pin 31 to move away from the valve 2, so that the mating structure 35 and the guide structure 42 abut against each other. As the pin 31 is pushed backwards by the lifting structure, the guide structure 42 completes the guidance, that is, the pin 31 rotates to the shoulder 34 to avoid the limiting shoulder 41. The guide slope is inclined relative to the axial direction. Correspondingly, the lifting structure and the part of the locking pin 3 that cooperates with the lifting structure are also provided with slopes to play a guiding role. These slopes are also inclined relative to the axial direction.

[0050] In some embodiments, to facilitate the provision of the aforementioned lifting structure, it is preferable that the pin 31 and the opening 22 of the locking hole 21 have a matching inclined surface. This inclined surface can be provided on the pin 31 or on the opening 22 of the locking hole 21, with a flared opening formed inside the opening 22 of the locking hole 21, the wall of which is the aforementioned inclined surface. Alternatively, the head of the pin 31 may have a tapered or spherical portion to form an inclined surface; or both the opening 22 of the locking hole 21 and the head of the pin 31 may have inclined surfaces. The matching inclined surface between the pin 31 and the opening 22 of the locking hole 21 allows the pin 31 to move axially when the valve 2 rotates. When the shoulder 34 and the limiting shoulder 41 abut against each other, the end of the pin 31 is axially aligned with the opening 22 of the locking hole 21. When the locking pin 3 is in this axial position, the valve 2 can be rotated to push the pin 31 to move axially, so as to guide the guide structure 42 to the mating structure 35, and so that the pin 31 moves to the shoulder 34 to avoid the limiting shoulder 41.

[0051] In some embodiments, the guide structure 42 and the limiting shoulder 41 are provided for convenience. The connecting end 100 may include a sleeve structure 4 located in the mounting hole 14 and fixed relative to the valve seat 1. The pin portion 31 includes a cylindrical rod portion 37 and a protrusion 36 provided on one side of the cylindrical rod portion 37. The protrusion 36 is the shoulder 34 on one side in the axial direction of the pin portion 31, and the other side in the axial direction is the mating structure 35. That is, the side of the protrusion 36 closer to the valve 2 is the shoulder 34, and the side away from the valve 2 is the mating structure 35.

[0052] The sleeve structure 4 has a cylindrical hole that mates with the cylindrical rod portion 37 and a sliding groove 43 that slidably mates with the protrusion portion 36. That is, a sliding groove 43 is provided on one side of the groove wall of the cylindrical hole to mate with the protrusion portion 36, so as to restrict the pin portion 31 from rotating relative to the sleeve structure 4. The cylindrical hole and the cylindrical rod portion 37 have the same diameter to form a mating relationship.

[0053] A groove 44 is formed on one side wall of the slide groove 43. The groove 44 has a limiting shoulder 41 on one side wall in the axial direction of the pin 31, and a guiding structure 42 on the other side wall in the axial direction. If it is an inclined surface, it is set away from the valve 2 from the bottom of the groove towards the opening. The limiting shoulder 41 is generally set perpendicular to the axial direction of the valve 2.

[0054] It should be noted that the sleeve structure 4 and the valve seat 1 can be relatively fixed, or the sleeve structure 4 and the valve seat 1 can be rotated together. However, in the axial direction of the valve 2, the two must be relatively fixed, especially relative to the valve 2, to avoid moving out of the current position.

[0055] In some embodiments, for ease of installation, a plug 5 may be included, threaded into the wall of the mounting hole 14, to prevent axial movement of the sleeve structure 4. The operating part 32 is threadedly connected to the pin 31, and its outer diameter is larger than the diameter of the mounting hole 14. The pin 31 passes through the plug 5 and extends to the outer side away from the surface 11 to connect with the operating part 32. The sleeve structure 4 is disposed inside the plug 5 to abut against it, preventing relative axial movement. An elastic element 6 is provided between the pin 31 and the plug 5 to prevent the pin 31 from exiting its restricted state. Specifically, the pin 31 includes an intermediate rod portion with a diameter smaller than that of the cylindrical rod portion 37. The elastic element 6 is sleeved on the intermediate rod portion, with one end abutting against one end of the cylindrical rod portion 37, and the other end extending into the receiving hole of the plug 5 and abutting against it. The outer end of the plug 5 has a cross groove or a slotted groove to facilitate rotation of the plug 5 using a screwdriver.

[0056] Based on the connection end 100 provided in the above embodiments, this application also provides a fluid connector, including a mating end. The fluid connector further includes any one of the connection ends 100 in the above embodiments, and the mating end and the connection end 100 are mated and connected. Since this fluid connector uses the connection end 100 in the above embodiments, the beneficial effects of this fluid connector can be found in the above embodiments.

[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connection end of a fluid connector, characterized in that, The valve includes a valve seat (1), a valve (2), and a locking pin (3). The valve (2) can rotate relative to the valve seat (1) to open and close. The locking pin (3) includes a pin (31) and an operating part (32). When the pin (31) moves axially to a restricted state, it can prevent the valve (2) from moving relative to the valve seat (1). The operating part (32) is exposed and can drive the pin (31) to move out of the restricted state. One end face of the valve seat (1) in the axial direction is a mating surface (12) for mating with a mating end (200). The operating part (32) is exposed on the opposing surface (11) of the valve seat (1) away from the mating surface (12) and is located within the radial outer contour (13) of the valve seat (1).

2. The connection end of the fluid connector according to claim 1, characterized in that, The operating part (32) is fixedly connected to the pin (31) so that the pin (31) can be pulled axially away from the mating surface (12) to move out of the restricted state.

3. The connection end of the fluid connector according to claim 2, characterized in that, The operating part (32) has an annular groove (33) for embedding the force-applying part.

4. The connection end of the fluid connector according to any one of claims 1-3, characterized in that, The valve seat (1) is provided with an axially extending mounting hole (14), one end of which extends to the opposing surface (11) of the valve seat (1). The opposing surface (11) is oriented in the opposite direction to the mating surface (12). The pin (31) is inserted into the mounting hole (14) and extends to the opposing surface (11) to connect the operating part (32).

5. The connection end of the fluid connector according to claim 4, characterized in that, The valve (2) has a locking hole (21) that mates with the pin (31) so that when the pin (31) moves axially to enter the locking hole (21), the pin (31) is in the restricted state.

6. The connection end of the fluid connector according to claim 5, characterized in that, It also includes a limiting shoulder (41), and a stop shoulder (34) is provided on the pin (31). When the pin (31) moves axially to exit the limiting state, the pin (31) can rotate until the stop shoulder (34) is opposite to the limiting shoulder (41) to prevent the pin (31) from moving to the limiting state.

7. The connection end of the fluid connector according to claim 6, characterized in that, It also includes a guide structure (42) disposed opposite to the limiting shoulder (41), and the pin (31) is provided with a mating structure (35) that cooperates with the guide structure (42). At least one of the mating structure (35) and the guide structure (42) is a guide slope, so as to guide the pin (31) to rotate to the shoulder (34) to avoid the limiting shoulder (41) when the pin (31) moves axially away from the valve (2).

8. The connection end of the fluid connector according to claim 7, characterized in that, The head of the pin (31) and the opening (22) of the locking hole (21) have a matching bevel so as to guide the pin (31) to move axially when the valve (2) is rotated; when the shoulder (34) and the limiting shoulder (41) abut against each other, the end of the pin (31) is axially aligned with the opening (22) of the locking hole (21) so as to push the pin (31) to move axially when the valve (2) is rotated, so as to complete the guidance of the guide structure (42) to the mating structure (35).

9. The connection end of the fluid connector according to claim 8, characterized in that, It also includes a sleeve structure (4) located in the mounting hole (14) and axially fixed relative to the valve seat (1); the pin (31) includes a cylindrical rod (37) and a protrusion (36) provided on one side of the cylindrical rod (37); in the axial direction of the pin (31), one side of the protrusion (36) is the shoulder (34), and the other side is the mating structure (35); the sleeve structure (4) has a cylindrical hole that mates with the cylindrical rod (37) and a sliding groove (43) that slidably mates with the protrusion (36), and a groove (44) is provided on one side of the groove wall of the groove (43), the groove (44) on one side of the groove wall in the axial direction of the pin (31) is the limiting shoulder (41), and the other side of the groove wall in the axial direction is the guide structure (42).

10. The connection end of the fluid connector according to claim 9, characterized in that, It also includes a plug (5) that is threaded into the wall of the mounting hole (14), the operating part (32) is threadedly connected to the pin (31), the pin (31) is provided through the plug (5), the sleeve structure (4) is provided inside the plug (5), and an elastic element (6) is provided between the pin (31) and the plug (5) to prevent the pin (31) from exiting the restricted state; the operating part (32) can abut against the opposing surface (11).

11. A fluid connector, comprising a mating end, characterized in that, It also includes a connection end as described in any one of claims 1-10, wherein the mating end and the connection end are connected in a mating manner.

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