Connecting end of fluid connector and fluid connector

Abstract

The utility model discloses a connecting end of a fluid connector, which is used for being matched with a butt joint end and comprises a valve seat and a valve core, the valve seat comprises external channels and valve channels, and at least one external channel communicates with the multiple valve channels; the valve core is movably arranged on the valve seat so as to move to a first position and a second position, and for each valve channel communicated with at least one external channel, when the valve core moves to the first position, each corresponding valve channel is closed; and when the valve element moves to the second position, the corresponding valve channels are opened. The connecting end of the fluid connector can effectively solve the problem that the overall compactness effect of the fluid connector is poor. The utility model further discloses a fluid connector comprising the connecting end. The utility model further discloses a fluid connector.

Description

Technical Field

[0001] This utility model relates to the field of fluid communication technology, and more specifically, to a connection end of a fluid connector, and also to a fluid connector including the above-mentioned connection end. Background Technology

[0002] Fluid connectors typically consist of mating connecting ends and connecting ends, which may have identical or different structures. When the connecting end and connecting end are disconnected, each seals independently to disconnect the fluid source and prevent fluid leakage or ejection. When the connecting end and connecting end are mated, the valve core structure opens, allowing fluid to flow between them. Fluid connectors can be used to connect fluid sources and fluid heat sinks, specifically serving as interfaces between fluid sources and various heat sinks. They facilitate efficient heat dissipation by allowing fluid circulation to remove heat. Compared to traditional air cooling, they are better suited for components with high heat dissipation requirements, such as chips.

[0003] In the process of realizing this utility model, the inventors discovered that there are at least the following problems in the prior art: In the current fluid connector, due to the movement of the valve, that is, the valve needs to move from the open state to the closed state, the valve needs to occupy a lot of space. This space occupation is largely limited by the position of the valve seat channel, so there is a lot of wasted space, resulting in poor overall compactness of the fluid connector, which is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the first objective of this utility model is to provide a connection end of a fluid connector, which can effectively solve the problem of poor overall compactness of the fluid connector; the second objective of this utility model is to provide a fluid connector including the above-mentioned connection end; and the third objective of this utility model is to provide a fluid connector.

[0005] To achieve the first objective mentioned above, this utility model provides the following technical solution:

[0006] A fluid connector has a connecting end for mating with a mating end, the connecting end including a valve seat and a valve core; the valve seat includes an external channel and a valve channel, at least one of the external channels communicating with a plurality of the valve channels; the valve core is movably disposed on the valve seat to be movable to a first position and a second position, wherein for each of the valve channels communicated by at least one of the external channels: when the valve core is movable to the first position, the corresponding valve channel is closed; when the valve core is movable to the second position, the corresponding valve channel is opened.

[0007] At the connection end of the aforementioned fluid connector, during use, another connection end with an identical or similar structure can be selected as the mating end to form a connection. During use, the connection end is mated with the corresponding mating end. After mating, the fluid will split at the valve channel and then re-merge. This effectively distributes the original single valve channel to form multiple valve channels. Multiple valve channels allow for more convenient structural arrangement and a more compact structure. Simultaneously, because the cross-section of a single valve channel is relatively small, the stroke required for the corresponding part of the valve core to enter and exit the valve channel is smaller, thus facilitating operation. Therefore, the overall compactness of the connection end is improved. In summary, the connection end of this fluid connector effectively solves the problem of poor overall compactness in fluid connectors.

[0008] In some technical solutions, when the valve core moves to the first position, each blocking part of the valve core blocks the corresponding valve channel to close the valve channel; when the valve core moves to the second position, each blocking part of the valve core is located at a staggered position to avoid the corresponding valve channel to open the valve channel; along the direction of valve core movement, the staggered positions and the valve channel are arranged alternately.

[0009] In some technical solutions, the valve seat includes an enlarged cavity with a cross-section that gradually expands from a first end to a second end. The first end of the enlarged cavity is connected to the inner opening of the external channel, and the second end of the enlarged cavity is connected to each corresponding valve channel.

[0010] In some technical solutions, a central hole is also included, the depth direction of which is consistent with the extension direction of the valve channel. The two lateral sides of the central hole are respectively connected to the corresponding side of each valve channel on the side. The end of the central hole facing the enlarged cavity is connected to and communicates with the center part of the large opening end of the enlarged cavity.

[0011] In some technical solutions, the cross-section of the central hole gradually decreases along the direction away from the enlarged cavity.

[0012] In some technical solutions, the cross-sectional area of ​​the external channel is less than the sum of the cross-sectional areas of the corresponding connected valve channels; and / or the cross-section of the external channel is circular; and / or the cross-section of each valve channel is circular.

[0013] In some technical solutions, the valve core is rotatably disposed on the valve seat, and each of the valve channels is evenly arranged around the rotation axis of the valve core. The central angle value of the adjacent valve channels is twice the preset rotation angle value of the valve core. After the valve core rotates from the first position by the preset rotation angle value, it can be located at the second position.

[0014] In some technical solutions, two valve channels are included, which are centrally symmetrical about the rotation axis of the valve core, and the external channel is coaxial with the rotation axis of the valve core; the valve core is disc-shaped.

[0015] The valve seat includes a valve body, a connecting head, and an outer sleeve. The outer sleeve is fitted onto one end of the valve body, and the connecting head is connected to the other end of the valve body. The end of the connecting head away from the valve body has an external channel. The outer sleeve and the valve body together form a receiving cavity that mates with the valve core and allows the valve core to rotate. The valve core is provided with multiple communicating holes corresponding to each of the valve channels. When the valve core rotates to the point where the communicating hole aligns with the valve channel, the valve channel is opened. When the valve core rotates to the point where the communicating hole is misaligned with the valve channel, so that the valve core body partially blocks the valve channel, the valve channel is closed.

[0016] The outer sleeve has a rotating groove for rotating engagement with the rotating protrusion on the docking end. The valve core has a pushing groove that cooperates with the rotating protrusion on the docking end. The outer sleeve has a rotating protrusion that cooperates with the rotating groove and the pushing groove on the docking end, so that the valve cores can be pushed to rotate synchronously when rotating engagement with the docking end.

[0017] In some technical solutions, one end of the connector has an external channel, and the other end has an enlarged channel that connects to the external channel and gradually expands away from the external channel to form an enlarged cavity. The valve body has a central hole that gradually narrows away from the connector at the center of one end facing the connector, and the side of the central hole communicates with the valve channel. In the axial direction, the projections of each valve channel and the central hole at the center all fall on the inner side of the second end channel wall of the enlarged cavity.

[0018] To achieve the second objective mentioned above, this utility model also provides a fluid connector, which includes any of the aforementioned connection ends. One of the two connection ends is configured to mate with the other as a mating end, and in the connected state, the valve channels of both are connected to each other in a one-to-one correspondence. Since the aforementioned connection end has the above-mentioned technical effects, the fluid connector with this connection end should also have the corresponding technical effects.

[0019] To achieve the third objective mentioned above, this utility model also provides a fluid connector comprising two mating ends, each forming an external channel. At least one of the mating ends has a rotatable valve core, and multiple valve channels are evenly arranged around the rotation axis of the valve core to connect the external channels of the two mating ends. When the valve core rotates to a first position, each valve channel is closed; when the valve core rotates to a second position, each valve channel is opened. Similar to any of the aforementioned mating ends, the valve channels are distributed. Since the aforementioned mating ends have the above-mentioned technical effects, fluid connectors employing the same distributed channels should also have corresponding technical effects. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A cross-sectional structural diagram of the connecting end provided in an embodiment of this utility model;

[0022] Figure 2 A schematic diagram of the docking side of the connecting end provided in an embodiment of this utility model;

[0023] Figure 3 A schematic diagram of the external connection side of the connection end provided in an embodiment of this utility model;

[0024] Figure 4 A schematic diagram of the rear structure of the valve body provided in an embodiment of this utility model;

[0025] Figure 5 A schematic diagram of the docking side structure of the valve body provided in an embodiment of this utility model;

[0026] Figure 6 A schematic diagram of the docking side structure of the docking end provided in an embodiment of this utility model;

[0027] Figure 7 A cross-sectional view of the connection end when the valve core is in the first position, as provided in an embodiment of this utility model;

[0028] Figure 8 A cross-sectional structural diagram of the connection end when the valve core is in the second position, provided for an embodiment of this utility model;

[0029] Figure 9A cross-sectional structural schematic diagram of the fluid connector provided in an embodiment of this utility model;

[0030] Figure 10 A schematic diagram of the structure of the fluid connector provided in an embodiment of this utility model.

[0031] The following labels are shown in the attached diagram:

[0032] 100 - Connecting end, 200 - Dating end;

[0033] 10-Valve seat, 11-Connecting head, 111-External channel, 1111-Outer port, 1112-Inner port, 112-Expanded cavity, 12-Outer sleeve, 121-Rotating locking protrusion, 122-Rotating locking groove, 123-Guide groove, 13-Rear sleeve, 14-Valve body, 141-Valve channel, 142-Center hole, 143-Offset position;

[0034] 20-Valve core, 21-Blocking part, 22-Connecting hole, 23-Push groove; 201-First position, 202-Second position;

[0035] 30 - Sealing ring;

[0036] 40 - Reception cavity. Detailed Implementation

[0037] This utility model discloses a connection end for a fluid connector, which effectively solves the problem of poor overall compactness of the fluid connector.

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1-10 , Figure 1 A cross-sectional structural diagram of the connecting end provided in an embodiment of this utility model; Figure 2 A schematic diagram of the docking side of the connecting end provided in an embodiment of this utility model; Figure 3 A schematic diagram of the external connection side of the connection end provided in an embodiment of this utility model; Figure 4 A schematic diagram of the rear structure of the valve body provided in an embodiment of this utility model; Figure 5 A schematic diagram of the docking side structure of the valve body provided in an embodiment of this utility model; Figure 6 A schematic diagram of the docking side structure of the docking end provided in an embodiment of this utility model; Figure 7A cross-sectional view of the connection end when the valve core is in the first position, as provided in an embodiment of this utility model; Figure 8 A cross-sectional structural diagram of the connection end when the valve core is in the second position, provided for an embodiment of this utility model; Figure 9 A cross-sectional structural schematic diagram of the fluid connector provided in an embodiment of this utility model; Figure 10 A schematic diagram of the structure of the fluid connector provided in an embodiment of this utility model.

[0040] In some embodiments, a connecting end 100 of a fluid connector is provided for mating with a mating end 200. The structure of the mating end 200 may be the same as that of the connecting end 100 and they may mate with each other. Of course, the structure of the mating end 200 may also be different from that of the connecting end 100, such as lacking a valve core 20. The specific configuration can be made as needed.

[0041] The connection end 100 is characterized by its design. Considering the need for the valve core 20 to move to achieve opening and closing, and given that the current valve core 20 has a relatively large range of motion, this can easily lead to poor overall compactness and insufficient ease of operation. In the connection end 100 provided in this embodiment, the valve channels 141 at the valve core 20 can be distributed, connecting to the same external channel 111 instead of a one-to-one relationship. They can be distributed into two to four, or even more, such as no less than five. Because the number of connected valve channels 141 increases, the cross-sectional area of ​​a single valve channel 141 becomes smaller, which can reduce the stroke of the valve core 20. Simultaneously, the distributed arrangement of the valve channels 141 contributes to a more compact structure.

[0042] In some embodiments, a fluid connector connection end 100 is provided for mating with a mating end 200, and mainly includes a valve seat 10 and a valve core 20. The valve core 20 is movably disposed on the valve seat 10 so as to control the closure of the valve passage 141 on the valve seat 10.

[0043] The valve seat 10 includes an external channel 111 and multiple valve channels 141. The outer port 1111 of the external channel 111 is used for external connection, mainly for connecting to external pipes. At least one inner port 1112 of the external channel 111 communicates with the multiple valve channels 141 to form multiple valve channels 141 arranged in a dispersed manner, so as to achieve merging or splitting at the connection between the valve channels 141 and the external channel 111. For example, when the outer port 1111 of the external channel 111 is used to introduce fluid, the fluid introduced by the external channel 111 will be split to enter the corresponding valve channels 141. Similarly, when the outer port 1111 of the external channel 111 is used to discharge fluid, the fluid of the corresponding valve channels 141 will merge and then flow out through the external channel 111. At the end of valve channel 141 furthest from the corresponding docking channel, the various valve channels 141 need to merge into one channel, such as merging into the corresponding channel on docking end 200, or they can merge at the connection end 100. It should be noted that, as shown in the attached figure, only one external channel 111 can be provided; or multiple external channels 111 can be provided, in which case at least one external channel 111 corresponds to multiple valve channels 141. Specifically, multiple external channels 111 can each individually correspond to multiple valve channels 141. Taking two external channels 111 each individually corresponding to three valve channels 141 as an example, then six valve channels 141 need to be provided.

[0044] As can be seen from the above, the external channel 111 connects to multiple valve channels 141, that is, connects to at least two valve channels 141, so that the channel of the valve seat 10 is dispersed into at least two sub-channels at the valve core 20, which serve as valve channels 141 respectively.

[0045] The valve core 20 can move to a first position 201 and a second position 202. When the valve core 20 moves to the first position 201, each valve passage 141 is closed; when the valve core 20 moves to the second position 202, each valve passage 141 is opened. The movement of the valve core 20 can be rotation, translation, or other methods. The range and path of movement of the valve core 20 are generally constrained by the valve seat 10. Taking rotation as an example, the valve core 20 and valve seat 10 can be rotated relative to each other through the structural cooperation between the valve seat 10 and the valve core 20. That is, the valve core 20 can only rotate relative to the valve seat 10. When the valve core 20 rotates to a certain position relative to the valve seat 10 (which also means relative to the valve passage 141), the valve core 20 blocks all valve passages 141 on the valve seat 10 (at least all valve passages 141 corresponding to one external passage 111). This position is called the first position 201. When the valve core 20 rotates to another position relative to the valve seat 10, the valve core 20 opens all valve passages 141 on the valve seat 10, that is, it no longer blocks them, so that fluid can flow. This position is called the second position 202.

[0046] With the above configuration, each of the valve channels 141 connected to at least one of the external channels 111 is closed when the valve core 20 moves to the first position 201 and opens when it moves to the second position 202. The term "at least one external channel 111" does not imply multiple external channels 111: there may be only one external channel 111, in which case the at least one external channel 111 is that single external channel; there may be multiple external channels 111, in which case the at least one external channel 111 may be only one external channel 111, or it may be multiple external channels 111, or even all of them. When multiple external channels 111 exist, each external channel 111 may be connected to multiple valve channels 141.

[0047] In the aforementioned fluid connector, at the connecting end 100, another connecting end 100 with an identical or similar structure can be selected as the mating end 200 to form a connection. During use, the connecting end 100 is mated with the corresponding mating end 200. After mating, the fluid will split at the valve channel 141 and then rejoin. This effectively distributes the original single valve channel 141 into multiple valve channels 141, allowing for a more convenient and compact structural arrangement. Furthermore, because the cross-section of a single valve channel 141 is relatively small, the stroke required for the valve core 20 to enter and exit the valve channel 141 is also smaller, thus facilitating operation. Therefore, the overall compactness of the connecting end 100 is improved. In summary, the connecting end 100 of this fluid connector effectively solves the problem of poor overall compactness in fluid connectors.

[0048] In some embodiments, the valve core 20 closes the valve passage 141 by using a solid portion of the valve core 20 as a blocking portion 21 to block the valve passage 141, thereby closing the valve passage 141; while the blocking portion 21 avoids the valve passage 141 and leaves an empty portion, such as a cavity, in the valve passage 141 so that fluid can flow through the valve passage 141, thereby opening the valve passage 141.

[0049] Specifically, when the valve core 20 moves to the first position 201, each blocking part 21 of the valve core 20 blocks the corresponding valve channel 141 to close the valve channel 141; when the valve core 20 moves to the second position 202, each blocking part 21 of the valve core 20 is located at a staggered position 143 to avoid the corresponding valve channel 141, thereby opening the valve channel 141. Along the direction of movement of the valve core 20, the staggered positions 143 and valve channels 141 are alternately arranged. For example, when the valve core 20 rotates, multiple staggered positions 143 and multiple valve channels 141 are alternately arranged circumferentially; when the valve core 20 moves in a straight line, multiple staggered positions 143 and multiple valve channels 141 are alternately arranged in a straight line. Through the above arrangement, the stroke of the valve core 20 can be better reduced.

[0050] When the valve core 20 is provided with a connecting hole 22, multiple connecting holes 22 and multiple blocking parts 21 are arranged alternately in sequence. When the valve core 20 moves to the first position 201, each connecting hole 22 is offset from the corresponding valve channel 141. At this time, the connecting hole 22 is aligned with the corresponding offset position 143, and the blocking part 21 is aligned with the valve channel 141, thereby closing the valve channel 141. When the valve core 20 moves to the second position 202, each connecting hole 22 is aligned with the corresponding valve channel 141. At this time, the connecting hole 22 is offset from the corresponding offset position 143, and the blocking part 21 is offset from the valve channel 141 and aligned with the offset position 143, thereby opening the valve channel 141.

[0051] In some embodiments, the flow from the external channel 111 to each valve channel 141 can be gradually diverted for guidance, or a multi-pass cavity can be provided to achieve communication. For ease of flow guidance and arrangement, the valve seat 10 preferably includes an enlarged cavity 112 with a cross-section that gradually expands from the first end to the second end. The first end (small opening end) of the enlarged cavity 112 is connected to the inner opening 1112 of the external channel 111, and the second end (large opening end) is connected to each corresponding valve channel 141. The enlarged cavity 112 is used to guide the fluid into the corresponding valve channel 141.

[0052] Specifically, the cross-section of the expanded cavity 112 can be circular, and the cross-section preferably increases continuously from the first end to the second end. As shown in the attached figure, the small opening end is aligned with the external channel 111 and connected to each other. The expanded cavity 112 can be the side of a frustum. To better guide fluid flow, the expanded cavity 112 is preferably divided into four sections from the small opening end to the large opening end: an inwardly convex arc section, an oblique line section, an inwardly concave arc section, and a straight line section. The axial section of the inner wall of the inwardly convex arc section is inwardly convex arc-shaped, the axial section of the inner wall of the oblique line section is oblique line-shaped relative to the axis, the axial section of the inner wall of the inwardly concave arc section is inwardly concave arc-shaped, and the axial section of the inner wall of the straight line section is a straight line-shaped parallel to the axis. The two ends of the concave arc segment smoothly transition to the inner opening 1112 of the external channel 111 and the small opening of the oblique line segment, respectively, and are respectively tangent to each other; the two ends of the convex arc segment smoothly transition to the large opening of the oblique line segment and the straight line segment, respectively, and are respectively tangent to each other.

[0053] In some embodiments, the external channel 111 and the enlarged cavity 112 can be integrated into a single structural component, wherein the lateral width (the dimension perpendicular to the oriented direction) of the large opening end of the enlarged cavity 112 is preferably greater than the straight-line distance between two points that are far apart in the corresponding directions of the plurality of valve channels 141. Specifically, it can be that, along the axial projection, the mating ends 200 of each corresponding valve channel 141 all fall within the projected contour range of the large opening end of the enlarged cavity 112.

[0054] In some embodiments, considering the relatively high fluid flow rate, each valve passage 141 can be arranged with one end facing the external passage 111 to form a flared opening for better fluid introduction. However, this structure results in a relatively large lateral space occupation.

[0055] Therefore, to enable each valve channel 141 to better introduce or extract fluid from its corresponding expansion cavity 112, a central hole 142 is preferably included, with its depth direction aligned with the extension direction of the valve channel 141. The two lateral sides of the central hole 142 communicate with the corresponding sides of each valve channel 141 on its side. That is, valve channels 141 are provided on the sides of the central hole 142. Multiple valve channels 141 can be arranged around the central hole 142, or two valve channels 141 can be arranged on opposite sides of the central hole 142. The extension depth of the central hole 142 should end before the valve core 20 to avoid interfering with the closing effect of the valve core 20. The end of the central hole 142 facing the expansion cavity 112 is aligned with and communicates with the center portion of the larger opening of the expansion cavity 112, allowing fluid to be introduced or extracted from the expansion cavity 112. With the above arrangement, the valve passage 141 can not only directly introduce or draw fluid from the expansion cavity 112 through the end opening, but also introduce or draw fluid from the central hole 142, which in turn draws fluid out of the expansion cavity 112. In this consideration, since some space needs to be reserved for valve movement at the valve, the space between the two valve passages 141, whether linearly or circularly arranged (and for circular arrangements, this space is also reflected in the center position), and the expansion cavity 112 at the center, has little impact on the actual position. Moreover, the central hole 142 increases lateral flow, effectively ensuring a compact structure while improving flow control.

[0056] When multiple valve channels 141 are arranged in a straight line, the above-mentioned central hole 142 can be provided between two adjacent valve channels 141. At this time, the position of the central hole 142 is aligned with the above-mentioned offset position 143.

[0057] When multiple valve channels 141 are arranged in an arc shape, the aforementioned central hole 142 can be provided at the center position, or the aforementioned central hole 142 can be provided between adjacent valve channels 141. In this case, the central hole 142 and the valve channel 141 are arranged alternately on an arc.

[0058] In some embodiments, the cross-section of the central hole 142 can be gradually reduced along the direction away from the enlarged cavity 112. This not only adapts to the need for gradual flow splitting in the depth direction and gradual flow convergence in the orifice direction, but also, since the bottom is close to the valve core 20, and the closer to the valve core 20, the more compact the axial structure. With the above arrangement, the structure can be made more compact by getting closer to the valve core 20 while ensuring strength.

[0059] In some embodiments, as described above, valve channel 141 primarily serves as a diversion channel, and subsequent merging is generally required. Therefore, the cross-sectional area of ​​the external channel 111 can be equal to the sum of the cross-sectional areas of the corresponding connected valve channels 141. Considering the need to ensure drainage pressure, the cross-sectional area of ​​the external channel 111 can also be greater than the sum of the cross-sectional areas of the corresponding connected valve channels 141. Of course, to facilitate rapid flow and reduce the flow resistance caused by diversion, the cross-sectional area of ​​the external channel 111 can be less than the sum of the cross-sectional areas of the corresponding connected valve channels 141.

[0060] In some embodiments, the external channel 111 and the valve channel 141 may have cross-sections that are circular, elliptical, or square, and may be the same or different. For the convenience of fluid flow, it is preferred that the external channel 111 has a circular cross-section; and that each of the valve channels 141 has a circular cross-section.

[0061] In some embodiments, the valve core 20 can be rotatably disposed on the valve seat 10. In this case, each valve channel 141 can be arranged around the rotation axis of the valve core 20. It should be noted that each valve channel 141 can be distributed on the same circumference or on different circumferences, such as staggered distribution, so that the positions of each valve channel 141 are more compact.

[0062] The rotating valve core 20 not only facilitates the pushing of the pusher, but also allows for the combination of the docking methods of the connecting end 100 and the docking end 200. For example, the connecting end 100 and the docking end 200 can be rotated together, such as by spiral connection or rotary snap-fit. When the connecting end 100 and the docking end 200 are connected, the valve core 20 is automatically pushed to rotate. In the initial stage of docking, the valve core 20 closes each valve channel 141. When docking is completed, the valve core 20 opens each valve channel 141. This allows the valve core 20 to be driven to open the valve channels 141 while the connecting end 100 and the docking end 200 are connected.

[0063] The valve passage 141 is arranged around the rotation axis of the valve core 20. It can be arranged uniformly or non-uniformly. It can also make full use of the extra space at the valve core 20. Generally speaking, except for the sealing structure at the boundary, the optimal way for the side of the valve core 20 is to form a through hole in half of the area to open the valve passage 141, and to form a solid in the other half of the area as a solid covering part to close the valve passage 141.

[0064] In some embodiments, it is preferable that each valve channel 141 is evenly arranged around the rotation axis of the valve core 20. When each solid covering part on the valve core 20 rotates between two valve channels 141, it opens each valve channel 141. When the solid covering part rotates to align with the corresponding valve channel 141, the corresponding valve channel 141 is closed.

[0065] In some embodiments, it is preferable that the central angle α corresponding to the adjacent valve channel 141 is twice the preset rotation angle b of the valve core 20; and the valve core 20, after rotating from the first position 201 by the preset rotation angle b, can be located at the second position 202, so as to ensure that the solid covering part of the valve core 20 can rotate to be directly opposite the valve channel 141. Of course, the preset rotation angle value b can also be less than or greater than half of the central angle value corresponding to the adjacent valve channel 141. For specific examples, if the central angle α corresponding to the adjacent valve channel 141 is 120 degrees, and three valve channels 141 are evenly arranged, then the preset rotation angle b can be 60 degrees; if the central angle α corresponding to the adjacent valve channel 141 is 90 degrees, and four valve channels 141 are evenly arranged, then the preset rotation angle b can be 45 degrees; if the central angle α corresponding to the adjacent valve channel 141 is 180 degrees, and four valve channels 141 are evenly arranged, then the preset rotation angle b can be 90 degrees.

[0066] In some embodiments, as described above, the valve seat 10 may be provided with three or more valve channels 141 to correspond to the same or different external channels 111. To make the overall structure of the connection end 100 more compact and adaptable to more scenarios, it is preferable that the valve seat 10 is provided with only two valve channels 141, and these two valve channels 141 are centrally symmetrically arranged relative to the rotation axis of the valve core 20. In this case, the preset rotation angle value can be approximately 90 degrees, so that the valve core 20 can rotate approximately 90 degrees from the first position 201 to enter the second position 202, and after rotating 90 degrees in the opposite direction from the second position 202, it can enter the first position 201. Arranging only two valve channels 141 allows for a more compact arrangement compared to three valve channels 141, avoiding interference while making full use of available space. At this time, the preferred connecting end 100 and the docking end 200 are rotated and snapped together. When the connecting end 100 and the docking end 200 are inserted into each other to enter the initial docking stage, the connecting end 100 and the docking end 200 rotate 90 degrees relative to each other to complete the rotational snapping. At this time, the valve core 20 enters the second position 202.

[0067] In some embodiments, the valve core 20 can be disc-shaped, or it can be fan-shaped or other shapes, depending on the specific requirements. Generally, a sealing device is provided on the side of the valve core 20 that contacts the valve seat 10. When the mating end 200 and the connecting end 100 are the same, and the valve cores 20 of both are in contact, a sealing device is also required between the two valve cores 20. This sealing device can be installed on one of the valve cores 20, such as the one located at the connecting end 100. The sealing device can be a sealing gasket or a sealing ring 30. To achieve better sealing, the sealing ring 30 includes an annular portion coaxial with the rotation axis and a partition portion within the annular portion. The shape of the partition portion is equal to the cross-sectional shape of the valve channel 141, such as both being circular. Furthermore, because multiple valve passages are provided, corresponding partitions are also provided, each corresponding to one of the valve passages. For example, when the valve core 20 rotates to the second position 202, the connecting hole 22, the valve passages, and the partitioned areas are coaxially arranged, and the boundary of the partitioned area is larger than the boundary of the connecting hole 22 to avoid protrusion inside and affecting fluid flow. Alternatively, sealing can be achieved through the precision of the fit between the structures, without the need for a sealing ring 30.

[0068] In some embodiments, to facilitate the installation of the valve core 20, the valve seat 10 may include a valve body 14, a connecting head 11, and an outer sleeve 12. The outer sleeve 12 is fitted onto one end of the valve body 14, and the connecting head 11 is connected to the other end of the valve body 14. The end of the connecting head 11 away from the valve body 14 has an external channel 111. The outer sleeve 12 and the valve body 14 combine to form a receiving cavity 40 that cooperates with the valve core 20 and allows the valve core 20 to rotate. Specifically, the receiving cavity 40 may be a concave groove with a square cross-section. To facilitate sealing and rotational accuracy, the valve core 20 may include a disc portion and a sleeve portion. The sleeve portion is fitted onto the valve body 14 and rotates with it. A sealing ring 30 is provided between the sleeve portion and the valve body 14. The inner radial side of the sleeve portion connects to the outer edge of the disc portion, and one end of the sleeve portion abuts against the valve body 14, while the other end abuts against the inner protrusion of the outer sleeve 12 and is connected to the disc portion on the inner side. The sleeve portion is axially limited by the inner protrusion of the outer sleeve 12 and the valve body 14, thereby axially limiting the valve core 20. Specifically, a rotating groove 122 and a rotating protrusion 121 can be provided on the outer sleeve 12 to cooperate with the rotating groove 122 and the rotating protrusion 121 on the docking end 200 respectively to achieve a rotating engagement. The valve core 20 has a pushing groove 23 that is aligned with the inlet groove of the rotating groove 122 to cooperate with the rotating protrusion 121 on the docking end 200. After the rotating protrusion 121 of the docking end 200 enters the guide groove 123, it can enter the pushing groove 23 and then rotate to enter the rotating groove 122 to complete the rotating engagement. At the same time, the valve core 20 is pushed to rotate. For example, after the valve core 20 is pushed to rotate from the first position 201 to the second position 202, the rotating protrusion 121 and the rotating groove 122 complete the engagement. The valve core 20 rotates in the opposite direction until the rotating locking protrusion 121 disengages from the rotating locking groove 122 to align with the guide groove 123. At this point, the valve core 20 rotates in the opposite direction and returns to the first position 201, allowing the mating end 200 and the connecting end 100 to disengage from each other. When the mating end 200 and the connecting end 100 have the same structure, the rotating locking protrusion 121 of the connecting end 100 correspondingly pushes the valve core 20 in the mating end 200 to rotate, thereby achieving opening and closing.

[0069] Furthermore, to facilitate limiting the rotation of the valve core 20, a positioning pin and a positioning hole can be provided between the valve core 20 and the valve body 14 to restrict relative rotation. For example, a positioning pin with its axis coaxial with the valve core 20 is provided at the center of the valve core 20, and the positioning pin is fixedly connected to the valve core 20, while the valve body 14 is provided with a corresponding positioning hole.

[0070] After the outer sleeve 12 is provided with a rotating groove 122 and a rotating protrusion 121, when it is necessary for the rotating protrusion 121 and the valve channel 141 to form a fixed positional relationship, the outer sleeve 12 and the valve body 14 can form a sliding fit relationship through a limiting structure. Then, a rear sleeve 12 is provided at the other end of the valve body 14, which abuts against the end of the valve body 14 away from the outer sleeve 12, and the rear sleeve 12 and the outer sleeve 12 are threadedly connected to each other to achieve mutual fixation.

[0071] The valve core 20 is provided with multiple connecting holes 22 corresponding to each valve channel 141. When the valve core 20 rotates to align the connecting hole 22 with the valve channel 141, the valve channel 141 is opened; when the valve core 20 rotates to offset the connecting hole 22 from the valve channel 141, so that the solid part of the valve core 20 blocks the valve channel 141, the valve channel 141 is closed. The connecting hole 22 is preferably a circular hole, and preferably has the same cross-sectional structure and dimensions as the valve channel 141. The valve channel 141 is preferably a straight channel.

[0072] In some embodiments, a connecting head 11 is provided, wherein one end of the connecting head 11 has an external channel 111 inside, and the other end has an enlarged cavity that mates with the external channel 111 and gradually expands away from the external channel 111, forming the aforementioned enlarged cavity 112. The valve body 14 has a central hole 142 at the center of one end facing the connecting head 11, which gradually narrows away from the connecting head 11. The side of the central hole 142 communicates with the valve channel 141. In the axial direction, the projections of each valve channel 141 and the central hole 142 at the center all fall on the inner side of the large-diameter end channel wall of the enlarged cavity 112. The central hole 142 is preferably frustum-shaped, with a large overlap area with the valve channel 141 at the larger cross-section, and the overlap area gradually decreases along the depth direction of the hole. The connecting head 11 is preferably threadedly connected to the valve body 14 and sealed by a sealing device.

[0073] Based on the connection end 100 provided in the above embodiments, this utility model also provides a fluid connector, which includes any one of the connection ends 100 in the above embodiments. The fluid connector includes two connection ends 100, one of which is configured to cooperate with the other as a mating end 200. In the connected state, the valve channels 141 of both are connected to each other in a one-to-one correspondence. The specific structure of the connection end 100 can be referred to in any of the above embodiments. Since this fluid connector uses the connection end 100 in the above embodiments, the beneficial effects of this fluid connector are explained in the above embodiments.

[0074] As described above, a fluid connector is provided, including two mating connection ends 100, one connection end 100 serving as the mating end of the other connection end 100. Each of the connection ends 100 forms an external channel 111. At least one of the two connection ends 100 has a rotatable valve core 20, and a plurality of valve channels 141 are evenly arranged around the rotation axis of the valve core 20 to communicate between the external channels 111 of the two mating connection ends 100. When the valve core 20 rotates to a first position 201, each valve channel 141 is closed; when the valve core 20 rotates to a second position 202, each valve channel 141 is opened. Specific structures of the connection ends 100 can be referred to the accompanying drawings, as well as the connection ends 100 shown in any of the above embodiments.

[0075] 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.

[0076] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 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 the present invention. Therefore, the present invention 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 for cooperating with a counter-connection end (200), the connection end comprising a valve seat (10) and a valve core (20); characterized in that, The valve seat (10) comprises outer connecting channels (111) and valve channels (141), at least one of the outer connecting channels (111) is connected with a plurality of the valve channels (141); the valve core (20) is movably arranged in the valve seat (10) and can be moved to a first position (201) and a second position (202), for each of the valve channels (141) connected with at least one of the outer connecting channels (111): when the valve core (20) is moved to the first position (201), each of the valve channels (141) is closed; when the valve core (20) is moved to the second position (202), each of the valve channels (141) is opened.

2. The connection end of claim 1, wherein When the valve core (20) is moved to the first position (201), each of the blocking portions (21) of the valve core (20) is respectively blocked at the corresponding valve channel (141) to realize the closing of the valve channel (141); when the valve core (20) is moved to the second position (202), each of the blocking portions (21) of the valve core (20) is respectively located at each staggered position (143) to avoid the corresponding valve channel (141) to realize the opening of the valve channel (141); along the moving direction of the valve core (20), the staggered positions (143) and the valve channels (141) are arranged in turn.

3. The connection end of claim 1, wherein The valve seat (10) comprises an expanding cavity (112) with a gradually enlarged cross-section from a first end to a second end, the first end of the expanding cavity (112) is connected with the inner opening (1112) of the outer connecting channel (111), and the second end of the expanding cavity (112) is connected with each corresponding valve channel (141).

4. The connection end of claim 3, wherein Further comprising a center hole (142) with a hole depth direction consistent with the extension direction of the valve channel (141), the two sides of the center hole (142) in the transverse direction are respectively connected with one side of each of the valve channels (141) on the side, and the end of the center hole (142) facing the expanding cavity (112) is connected with and communicated with the center part of the large opening end of the expanding cavity (112).

5. The connection end of claim 4, wherein The cross-section of the center hole (142) gradually decreases in the direction away from the expanding cavity (112).

6. The connection end of claim 1, wherein The cross-sectional area of the outer connecting channel (111) is smaller than the sum of the cross-sectional areas of each of the valve channels (141) connected therewith; and / or the cross-section of the outer connecting channel (111) is circular; and / or the cross-section of each of the valve channels (141) is circular.

7. The connection end according to any one of claims 1-6, characterized in that The valve core (20) is rotatably arranged in the valve seat (10), each of the valve channels (141) is uniformly arranged around the rotation axis of the valve core (20), and the corresponding central angle value of adjacent valve channels (141) is twice the preset rotation angle value of the valve core (20); the valve core (20) can be located at the second position (202) after being rotated by the preset rotation angle value from the first position (201).

8. The connection end of claim 7, wherein Two valve channels (141) are centrally symmetrically arranged relative to the rotation axis of the valve core (20), and the outer connecting channel (111) is coaxially arranged with the rotation axis of the valve core (20); the valve core (20) is in a disc type; The valve seat (10) comprises a valve body (14), a connecting head (11) and an outer sleeve (12), the outer sleeve (12) is sleeved on one end of the valve body (14), the other end of the valve body (14) is connected with the connecting head (11), the connecting head (11) has an outer connecting channel (111) at the end away from the valve body (14), and the outer sleeve (12) and the valve body (14) are combined to form a containing cavity (40) matched with the valve core (20) and allowing the valve core (20) to rotate; the valve core (20) is provided with a plurality of communication holes (22) corresponding to each valve channel (141), when the valve core (20) is rotated to align the communication hole (22) with the valve channel (141), the valve channel (141) is opened; when the valve core (20) is rotated to misalign the communication hole (22) with the valve channel (141), the valve core (20) physically blocks the valve channel (141), and the valve channel (141) is closed; The outer sleeve (12) has a rotating clamping groove (122) for rotating clamping with the rotating clamping convex (121) on the butt joint end (200), the valve core (20) has a pushing groove (23) matched with the rotating clamping convex (121) on the butt joint end (200), and the outer sleeve (12) has a rotating clamping convex (121) matched with the rotating clamping groove (122) and the pushing groove (23) on the butt joint end (200), so that the valve cores (20) can be pushed to rotate synchronously when the rotating clamping is performed with the butt joint end (200).

9. The connection end of claim 8, wherein One end of the connecting head (11) has the outer connecting channel (111) inside, the other end forms a counterbore cavity (112) matched with the outer connecting channel (111) and gradually expanding in the direction away from the outer connecting channel (111), the valve body (14) has a central hole (142) gradually shrinking in the direction away from the connecting head (11) at the center of one end facing the connecting head (11), and the side of the central hole (142) is in communication with the valve channel (141); in the axial direction, the projection of each valve channel (141) and the central hole (142) at the center falls inside the second end channel wall of the counterbore cavity (112).

10. A fluid connector, characterized by, The connecting end (100) as claimed in any one of claims 1-9, one of the two connecting ends (100) is arranged in cooperation with the other connecting end (100) as a butt joint end (200), and the valve channels (141) of the two are connected one by one in correspondence with each other in the connected state.

11. A fluid connector comprising: The utility model discloses a connecting end (100) including two butt -joints, each connecting end (100) forms the outer channel (111) respectively, and at least one connecting end (100) among two connecting ends (100) has rotatable valve core (20), and multiple valve channels (141) are evenly arranged around the rotation axis of valve core (20) to be connected between the outer channel (111) of two butt -joints connecting end (100), and when valve core (20) rotates to first position (201), each valve channel (141) is closed, and when valve core (20) rotates to second position (202), each valve channel (141) is opened.

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