Connecting end of fluid connector and fluid connector

Abstract

The invention 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 invention further discloses a fluid connector comprising the connecting end. The invention further discloses a fluid connector.

Description

Technical Field

[0001] The present invention relates to the field of fluid connection technology, and more specifically, to a connecting end of a fluid connector, and also to a fluid connector comprising the connecting end. Background Art

[0002] A fluid connector usually includes a matching connection end and a docking end, and the structures of the two can be the same or different. When the connection end and the docking end are disconnected, the two are sealed separately to disconnect the fluid source and prevent fluid leakage and spraying; when the connection end and the docking end are docked, the valve core structure therein will be opened, allowing the fluid to communicate between the connection end and the docking end. The fluid connector can be used to connect the fluid source and the fluid radiator. Specifically, it can be used as an interface between the fluid source and various radiators to remove heat through the circulation of the fluid, thereby achieving efficient heat dissipation. Compared with traditional air-cooled heat dissipation, it can be better suitable for components with high heat dissipation requirements such as chips.

[0003] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: In the current fluid connector, due to the activity relationship of the valve, that is, the valve needs to move from an open state to a closed state, the valve needs to occupy a relatively large amount of space, and this space occupation is largely limited by the position of the valve seat channel, so there is a lot of space waste, resulting in the problem of poor overall compactness of the fluid connector, which is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the first object of the present invention is to provide a connecting end of a fluid connector, which can effectively solve the problem of poor overall compactness of the fluid connector. The second object of the present invention is to provide a fluid connector including the above-mentioned connecting end; the third object of the present invention is to provide a fluid connector.

[0005] In order to achieve the above first object, the present invention provides the following technical solutions:

[0006] A connecting end of a fluid connector is used to cooperate with a docking end, the connecting end includes 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 is connected to multiple valve channels; the valve core is movably arranged on the valve seat so as to be able to move to a first position and a second position, for each valve channel connected to at least one of the external channels: when the valve core moves to the first position, the corresponding valve channels are closed; when the valve core moves to the second position, the corresponding valve channels are opened.

[0007] At the connection end of the above-mentioned fluid connector, when in use, another connection end with a completely identical or similar structure can be selected as the docking end to form a docking. When in use, the connection end is docked with the corresponding docking end. After the docking is completed, the fluid will be diverted at the valve channel and then merged again. This is actually to disperse the original single valve channel to form multiple valve channels. The structural arrangement of multiple valve channels can be more convenient, which can help the structure to be more compact. At the same time, since 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 relatively small, so it is more convenient to operate. Therefore, the overall compactness of the connection end is better. In summary, the connection end of the fluid connector can effectively solve the problem of poor overall compactness of the fluid connector.

[0008] In some technical schemes, when the valve core moves to the first position, each blocking portion 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 portion of the valve core is located at each staggered position to avoid the corresponding valve channel to open the valve channel; along the movement direction of the valve core, the staggered positions and the valve channel are arranged alternately in sequence.

[0009] In some technical solutions, the valve seat includes an expansion cavity whose cross section gradually expands from the first end to the second end, the first end of the expansion cavity is connected to the inner mouth of the external channel, and the second end of the expansion cavity is connected to each corresponding valve channel.

[0010] In some technical schemes, it also includes a center hole whose hole depth direction is consistent with the extension direction of the valve channel. The two lateral sides of the center hole are respectively connected to the corresponding side of each valve channel on the side, and the end of the center hole facing the expansion cavity is connected to and connected with the central part of the large mouth end of the expansion cavity.

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

[0012] In some technical solutions, the cross-sectional area of ​​the external channel is smaller than the sum of the cross-sectional areas of the correspondingly connected valve channels; and / or the cross-sectional area of ​​the external channel is circular; and / or the cross-sectional areas of the valve channels are all circular.

[0013] In some technical schemes, the valve core is rotatably arranged on the valve seat, and each of the valve channels is evenly arranged around the rotation axis of the valve core. The central angle values ​​corresponding to adjacent valve channels are twice the preset rotation angle value of the valve core; the valve core can be located in the second position after rotating from the first position to the preset rotation angle value.

[0014] In some technical solutions, two valve channels are included, the two valve channels are centrally symmetrically arranged relative to the rotation axis of the valve core, and the external channel is coaxially arranged with the rotation axis of the valve core; the valve core is disc-shaped;

[0015] The valve seat comprises a valve body, a connecting head and an outer sleeve, wherein the outer sleeve is sleeved on one end of the valve body, and the other end of the valve body is connected to the connecting head, and the end of the connecting head away from the valve body has an external channel, and the outer sleeve and the valve body are combined to form a containing cavity which cooperates with the valve core and enables the valve core to rotate; the valve core is provided with a plurality of communicating holes corresponding to each of the valve channels respectively, and when the valve core rotates until the communicating holes are aligned with the valve channel, the valve channel is opened; when the valve core rotates until the communicating holes are staggered with the valve channel so that the valve core entity partially blocks the valve channel, the valve channel is closed;

[0016] The outer sleeve has a rotation groove for rotationally engaging with the rotation convex on the docking end, and the valve core has a push groove that matches with the rotation convex on the docking end. The outer sleeve has a rotation convex that matches with the rotation groove and the push groove on the docking end, so that the valve cores can be pushed to rotate synchronously when rotationally engaging with the docking end.

[0017] In some technical schemes, the external channel is provided inside one end of the connecting head, and an expansion channel is formed inside the other end, which is connected to the external channel and gradually expands in the direction away from the external channel to form an expansion cavity. A center hole is provided in the center of one end of the valve body facing the connecting head, which gradually shrinks in the direction away from the connecting head, and the side of the center hole is connected with the valve channel; in the axial direction, the projections of each valve channel and the center hole in the center fall on the inner side of the second end channel wall of the expansion cavity.

[0018] In order to achieve the above second object, the present invention further provides a fluid connector, which includes any of the above connection ends, one of the two connection ends is arranged in cooperation with the other connection end to serve as a docking end, and the valve channels of the two are connected to each other in a one-to-one correspondence in the connected state. Since the above connection end has the above technical effects, the fluid connector having the connection end should also have the corresponding technical effects.

[0019] In order to achieve the third purpose mentioned above, the present invention also provides a fluid connector, which includes two butted connection ends, each of which forms an external channel, at least one of the two butted ends has a rotatable valve core, and a plurality of valve channels are evenly arranged around the rotation axis of the valve core to connect the external channels of the two butted connection ends; and when the valve core rotates to the first position, each of the valve channels is closed; when the valve core rotates to the second position, each of the valve channels is opened. The same as any of the above connection ends is that the valve channels form dispersed channels. Since the above connection ends have the above technical effects, the fluid connector using the same dispersed channels should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic cross-sectional structure diagram of a connection end provided in an embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of the docking side of a connection end provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of the external connection side of the connection terminal provided by an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the rear structure of a valve body provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the structure of the docking side of the valve body provided by an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the docking side structure of a docking terminal provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the cross-sectional structure of the connection end when the valve core provided by an embodiment of the present invention is located in the first position;

[0028] Figure 8 A schematic cross-sectional structure diagram of the connection end when the valve core provided by an embodiment of the present invention is located at the second position;

[0029] Fig. 9 A schematic cross-sectional structure diagram of a fluid connector provided in an embodiment of the present invention;

[0030] Fig.10 A schematic structural diagram of a fluid connector provided in an embodiment of the present invention.

[0031] The following are marked in the accompanying drawings:

[0032] 100-connection end, 200-butt end;

[0033] 10-valve seat, 11-connecting head, 111-external channel, 1111-external port, 1112-inner port, 112-expansion cavity, 12-outer sleeve, 121-rotational clamping protrusion, 122-rotational clamping 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-communication hole, 23-pushing groove; 201-first position, 202-second position;

[0035] 30-sealing ring;

[0036] 40- Accommodation cavity. DETAILED DESCRIPTION

[0037] The embodiment of the present invention discloses a connecting end of a fluid connector, so as to effectively solve the problem that the overall compactness of the fluid connector is poor.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 10 , Figure 1 A schematic cross-sectional structure diagram of a connection end provided in an embodiment of the present invention; Figure 2 A schematic structural diagram of the docking side of a connection end provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the external connection side of the connection terminal provided by an embodiment of the present invention; Figure 4 A schematic diagram of the rear structure of a valve body provided in an embodiment of the present invention; Figure 5 A schematic diagram of the structure of the docking side of the valve body provided by an embodiment of the present invention; Figure 6 A schematic diagram of the docking side structure of a docking terminal provided in an embodiment of the present invention; Figure 7 A schematic diagram of the cross-sectional structure of the connection end when the valve core provided by an embodiment of the present invention is located in the first position; Figure 8A schematic cross-sectional structure diagram of the connection end when the valve core provided by an embodiment of the present invention is located at the second position; Fig. 9 A schematic cross-sectional structure diagram of a fluid connector provided in an embodiment of the present invention; Fig.10 A schematic structural diagram of a fluid connector provided in an embodiment of the present invention.

[0040] In some embodiments, a connecting end 100 of a fluid connector is provided for cooperating with a docking end 200, wherein the structure of the docking end 200 may be the same as that of the connecting end 100 and cooperate with each other. Of course, the structure of the docking end 200 may also be different from that of the connecting end 100, such as the lack of a valve core 20, and the specific configuration may be made as needed.

[0041] The characteristic of the connection end 100 is that, considering the need for the valve core 20 to move to achieve opening and closing, the current range of movement of the valve core 20 is relatively large, which can easily lead to poor overall compactness and insufficient ease of operation. In the connection end 100 provided in this embodiment, the valve channel 141 of the connection end 100 at the valve core 20 can be connected to the same external channel 111 using a dispersed channel, rather than a one-to-one relationship, and can be dispersed into two to four, and of course, can be dispersed more, such as not less than five. As the number of docking valve channels 141 increases, the cross-sectional area of ​​a single valve channel 141 becomes smaller, which can reduce the movable stroke of the valve core 20. At the same time, because the valve channels 141 are dispersedly arranged, the structure is more compact.

[0042] In some embodiments, a connecting end 100 of a fluid connector is provided, which is used to cooperate with a docking 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 to control the valve channel 141 on the valve seat 10 to be closed.

[0043] The valve seat 10 includes an external channel 111 and a plurality of valve channels 141. The outer port 1111 of the external channel 111 is used for external connection, mainly an external pipeline, and the inner port 1112 of at least one external channel 111 is connected with the plurality of valve channels 141 to form a plurality of valve channels 141 that are dispersedly arranged to achieve confluence or diversion at the junction of the valve channel 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 diverted to enter the corresponding valve channels 141; for another example, when the outer port 1111 of the external channel 111 is used to export fluid, the fluids of the corresponding valve channels 141 will converge and then flow out through the external channel 111. At the end of the valve channel 141 away from the corresponding docking channel, the corresponding valve channels 141 need to merge into one channel, such as the corresponding channel on the docking end 200, and of course, they can also merge at the connection end 100. It should be noted that only one external channel 111 can be provided as shown in the figure; of course, multiple external channels 111 can also be provided, and at least one external channel 111 corresponds to multiple valve channels 141. Specifically, multiple external channels 111 can correspond to multiple valve channels 141 separately. For example, two external channels 111 correspond to three valve channels 141 separately, and six valve channels 141 need to be provided.

[0044] As can be seen from the above, the external channel 111 is connected to multiple valve channels 141 , that is, at least two valve channels 141 are connected to each other, so that the channel of the valve seat 10 is dispersed into at least two sub-channels at the valve core 20 to serve as the 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 channel 141 is closed; and when the valve core 20 moves to the second position 202, each valve channel 141 is opened. The movement of the valve core 20 can be a rotation, a translation, or other modes. The movement range and movement path of the valve core 20 are generally constrained by the valve seat 10. Taking rotation as an example, the valve core 20 and the valve seat 10 can form a rotational matching relationship through the structural matching relationship between the valve seat 10 and the valve core 20, and the valve core 20 can only rotate relative to the valve seat 10, and the valve core 20 can 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 channel 141), the valve core 20 blocks each valve channel 141 on the valve seat 10 (at least all valve channels 141 corresponding to a certain external channel 111), and 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 each valve channel 141 on the valve seat 10, that is, it no longer blocks it, so that the fluid can flow, and this position is called the second position 202.

[0046] Through the above arrangement, the valve channels 141 connected to at least one of the external channels 111 are: when the valve core 20 moves to the first position 201, the corresponding valve channels 141 are closed; when the valve core 20 moves to the second position 202, the corresponding valve channels 141 are opened. The at least one external channel 111 does not mean that there are multiple external channels 111: there may be only one external channel 111, in which case at least one external channel 111 is the external channel 111; there may be multiple external channels 111, in which case at least one external channel 111 may be only one of the external channels 111, or multiple of the external channels 111, or even all of the external channels 111. When there are multiple external channels 111, each external channel 111 may be connected to multiple valve channels 141.

[0047] In the connection end 100 of the above-mentioned fluid connector, when in use, another connection end 100 with a completely identical or similar structure can be selected as the docking end 200 to form a docking. When in use, the connection end 100 is docked with the corresponding docking end 200. After the docking is completed, the fluid will be diverted at the valve channel 141 and then merged again. This is actually to disperse the original single valve channel 141 to form a plurality of valve channels 141. The structural arrangement of the plurality of valve channels 141 can be more convenient, which can help the structure to be more compact. At the same time, since the cross-section of a single valve channel 141 is relatively small, the travel required for the corresponding part of the valve core 20 to enter and exit the valve channel 141 is relatively small, so it is more convenient to operate. Therefore, the overall compactness of the connection end 100 is better. In summary, the connection end 100 of the fluid connector can effectively solve the problem of poor overall compactness of the fluid connector.

[0048] In some embodiments, the valve core 20 closes the valve channel 141 and the valve channel 141 is generally closed by using the solid part of the valve core 20 as the blocking part 21 to block the valve channel 141, thereby closing the valve channel 141; and the blocking part 21 avoids the valve channel 141, and a hollow part, such as a hole, is located at the valve channel 141, so that the valve channel 141 can flow fluid, thereby opening the valve channel 141.

[0049] Specifically, when the valve core 20 moves to the first position 201, each blocking portion 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 portion 21 of the valve core 20 is located at each staggered position 143 to avoid the corresponding valve channel 141 to open the valve channel 141. Along the moving direction of the valve core 20, the staggered positions 143 and the valve channel 141 are arranged alternately in sequence. For example, when the valve core 20 rotates, multiple staggered positions 143 and multiple valve channels 141 are arranged alternately along the circumference; when the valve core 20 moves along a straight line, multiple staggered positions 143 and multiple valve channels 141 are arranged alternately along a straight line. Through the above arrangement, the moving stroke of the valve core 20 can be better reduced.

[0050] If the valve core 20 is provided with a connecting hole 22, the multiple connecting holes 22 and the 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 staggered with the corresponding valve channel 141, and the connecting hole 22 is aligned with the corresponding staggered position 143, and the blocking part 21 is aligned with the valve channel 141, so that the valve channel 141 is closed; and when the valve core 20 moves to the second position 202, each connecting hole 22 is aligned with the corresponding valve channel 141, and the connecting hole 22 is staggered with the corresponding staggered position 143, and the blocking part 21 is staggered with the valve channel 141 and aligned with the staggered position 143, so that the valve channel 141 is opened.

[0051] In some embodiments, from the external channel 111 to each valve channel 141, the flow may be directed in a gradually split manner, or a multi-pass cavity may be provided to achieve communication. In order to facilitate the flow and arrangement, the valve seat 10 preferably includes an expansion cavity 112 whose cross section gradually expands from the first end to the second end, wherein the first end (small-mouth end) of the expansion cavity 112 is connected to the inner port 1112 of the external channel 111, and the second end (large-mouth end) is connected to each corresponding valve channel 141, and the expansion cavity 112 is used to expand the hole to guide the fluid to enter the corresponding valve channel 141 respectively.

[0052] Specifically, the cross section of the reaming cavity 112 may be circular, and the cross section preferably increases continuously from the first end to the second end. As shown in the accompanying drawings, the small mouth end is aligned with the external channel 111 and connected to each other. The reaming cavity 112 may be a truncated cone side. In order to better guide the flow of the fluid, the reaming cavity 112 is preferably divided into four sections from the small mouth end to the large mouth end, which are, in turn, an inward convex arc section, an oblique line section, an inward concave arc section and a straight line section, wherein the axial section of the inner hole wall of the inward convex arc section is an inward convex arc shape, wherein the axial section of the inner hole wall of the oblique line section is an oblique line inclined relative to the axis, wherein the axial section of the inner hole wall of the concave arc section is an inward concave arc shape, and the axial section of the inner hole wall of the straight line section is a straight line parallel to the axis. The two ends of the concave arc segment are smoothly transitioned to the inner opening 1112 of the external channel 111 and the small opening end of the oblique line segment, such as being tangent to each other; the two ends of the convex arc segment are smoothly transitioned to the large opening end of the oblique line segment and the straight line segment, such as being tangent to each other.

[0053] In some embodiments, the external channel 111 and the expansion cavity 112 may be integrated into one structural member, and the lateral width (dimension perpendicular to the orientation direction) of the large opening end of the expansion cavity 112 is preferably greater than the linear distance between two points away from each other in the corresponding directions of the plurality of valve channels 141. Specifically, along the axial projection, the butt ends 200 of each corresponding valve channel 141 may all fall within the projection contour range of the large opening end of the expansion cavity 112.

[0054] In some embodiments, considering that the fluid flows at a relatively fast speed, each valve channel 141 can be made to face one end of the external channel 111 to form a bell mouth to better introduce the fluid. However, this structure occupies a relatively large space in the horizontal direction.

[0055] Therefore, in order to make each valve channel 141 better introduce or lead out fluid from the corresponding expansion cavity 112, it is preferred that a center hole 142 whose hole depth direction is consistent with the extension direction of the valve channel 141 is also included here, and the lateral sides of the center hole 142 are respectively communicated with the corresponding side of each valve channel 141 on the side, that is, the valve channel 141 is arranged on the side of the center hole 142, and multiple valve channels 141 can be arranged around the center hole 142, or two valve channels 141 can be respectively arranged on both sides of the center hole 142. Of course, the extension depth of the center hole 142 should be cut off before the valve core 20 to avoid interfering with the closing effect of the valve core 20. The end of the center hole 142 facing the expansion cavity 112 is connected and communicated with the central part of the large mouth end of the expansion cavity 112, so that fluid can be introduced or led out from the expansion cavity 112. Through the above arrangement, the valve channel 141 can not only directly introduce or draw out fluid from the expansion cavity 112 from the end opening, but also introduce or draw out fluid from the center hole 142, and the center hole 142 draws or draws out fluid from the expansion cavity 112. In the above considerations, since some space needs to be reserved for valve movement at the valve, the two valve channels 141 are arranged linearly or in a circle, and for a circular arrangement, this space is also reflected at the center of the circle. The expansion cavity 112 is arranged in the center, which has little effect on the actual position, and the side drainage is increased through the center hole 142, so that the drainage effect is better while effectively ensuring the compact structure.

[0056] When a plurality of valve channels 141 are arranged in a straight line, the center hole 142 may be provided between two adjacent valve channels 141 . In this case, the center hole 142 is aligned with the staggered position 143 .

[0057] When multiple valve channels 141 are arranged in an arc shape, the center hole 142 may be provided at the center of the circle, or between adjacent valve channels 141 . In this case, the center hole 142 and the valve channels 141 are alternately arranged on a circle.

[0058] In some embodiments, the cross-section of the center hole 142 can be gradually reduced in the direction away from the expansion cavity 112, which not only meets the needs of gradual diversion in the direction of the hole depth and gradual convergence in the direction of the orifice, but also because the bottom is close to the valve core 20, and the closer to the valve core 20, the more compact the axial structure. Through the above-mentioned arrangement, while ensuring the strength, it can be closer to the valve core 20, thereby achieving a more compact structure.

[0059] In some embodiments, as described above, the valve channel 141 is mainly used as a diversion channel, and generally needs to merge in the later stage, so that the cross-sectional area of ​​the external channel 111 can be equal to the sum of the cross-sectional areas of the correspondingly connected valve channels 141. Considering the guarantee of drainage pressure, the cross-sectional area of ​​the external channel 111 can also be larger than the sum of the cross-sectional areas of the correspondingly connected valve channels 141. Of course, in order to flow quickly and reduce the flow resistance caused by diversion, the cross-sectional area of ​​the external channel 111 can be smaller than the sum of the cross-sectional areas of the correspondingly connected valve channels 141.

[0060] In some embodiments, the cross-sections of the external channel 111 and the valve channel 141 can be circular, oval or square, etc., and the two can be the same or different. In order to facilitate the flow of fluid, it is preferred that the cross-section of the external channel 111 is circular; and the cross-sections of the valve channels 141 are all circular.

[0061] In some embodiments, the valve core 20 can be rotatably arranged 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 the various valve channels 141 can be distributed on the same circumference or on different circumferences, such as staggered distribution, so that the positions of the various valve channels 141 are more compact.

[0062] The provision of a rotatable valve core 20 not only facilitates the pushing of the pushing part, but also can combine the docking methods of the connecting end 100 and the docking end 200, such as performing a rotatable connection between the connecting end 100 and the docking end 200, such as a spiral connection, a rotary clamping connection, etc., so that when the connecting end 100 and the docking end 200 are connected, the valve core 20 is automatically pushed to rotate. In the initial docking stage, the valve core 20 closes each valve channel 141, and when the docking is completed, the valve core 20 opens each valve channel 141, so that when the connecting end 100 and the docking end 200 are connected, the valve core 20 is driven to move, so as to realize the opening of the valve channel 141.

[0063] The valve channel 141 can be arranged around the rotation axis of the valve core 20 evenly or unevenly, and the extra space at the valve core 20 can be fully utilized. Generally speaking, in addition to the sealing structure at the boundary of the side of the valve core 20, the best way is to form a through hole in half of the area to open the valve channel 141, and form a solid in the other half of the area to serve as a solid covering part to close the valve channel 141.

[0064] In some embodiments, it is preferred that the valve channels 141 are evenly arranged around the rotation axis of the valve core 20. At this time, when each solid covering part on the valve core 20 rotates between two valve channels 141, each valve channel 141 is cleared, and 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 preferred that the center angle a corresponding to the adjacent valve channels 141 is twice the preset rotation angle b of the valve core 20; and the valve core 20 can be located at the second position 202 after rotating the preset rotation angle b from the first position 201, so as to ensure that the physical covering part of the valve core 20 can be rotated to be arranged opposite to the valve channel 141. Of course, the preset rotation angle value b can also be less than or greater than half of the center angle value corresponding to the adjacent valve channel 141. For example, if the center angle a corresponding to the adjacent valve channel 141 is 120 degrees, three valve channels 141 are evenly arranged at this time, then the preset rotation angle b can be 60 degrees; if the center angle a corresponding to the adjacent valve channel 141 is 90 degrees, four valve channels 141 are evenly arranged at this time, then the preset rotation angle b can be 45 degrees; if the center angle a corresponding to the adjacent valve channel 141 is 180 degrees, four valve channels 141 are evenly arranged at this time, 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. In order to make the overall structure of the connection end 100 more compact and adapt to more scenarios, it is preferred that the valve seat 10 is provided with only two valve channels 141, and the two valve channels 141 are centrally symmetrically arranged relative to the rotation axis of the valve core 20. At this time, the preset rotation angle value may be about 90 degrees, so that the valve core 20 can enter the second position 202 after rotating about 90 degrees in the first position 201, and can enter the first position 201 after the second position 202 rotates 90 degrees in the opposite direction. Arrangement of only two valve channels 141 can be arranged more compactly than three valve channels 141, and can make full use of space everywhere while avoiding interference. At this time, it corresponds to the preferred rotational locking between the connecting end 100 and the docking end 200, so that when the connecting end 100 and the docking end 200 are inserted into each other to enter the initial stage of docking, the connecting end 100 and the docking end 200 are rotated 90 degrees relative to each other to complete the rotational locking, and the valve core 20 enters the second position 202.

[0067] In some embodiments, the valve core 20 can be disc-shaped, and of course, the valve core 20 can also be fan-shaped, or other shapes. The specific shape can be set accordingly as needed. Generally, a sealing device is provided on the side where the valve core 20 contacts the valve seat 10. When the docking end 200 and the connecting end 100 are the same, and the valve cores 20 of the two are close to each other, a sealing device is also required between the valve cores 20 of the two. At this time, the sealing device can be installed on one of the valve cores 20, such as the valve core 20 provided at the connecting end 100. The sealing device can be a sealing gasket or a sealing ring 30. In order to better achieve sealing, the sealing ring 30 here includes a circular ring portion coaxially arranged with the rotation axis and a partition portion provided on the circular ring portion. The shape of the partition portion is equal to the cross-sectional shape of the valve channel 141, such as both are circular. And because there are multiple valve passages, there are correspondingly multiple partitions, and they are arranged one by one with the valve passages. For example, when the valve core 20 rotates to the second position 202, the communicating hole 22, the valve passage and the area divided by the partition are coaxially arranged, and the boundary of the partition area is larger than the boundary of the communicating hole 22 to avoid protrusion inside and affect the flow of fluid. Of course, sealing can also be achieved through the matching accuracy between the structures without using the sealing ring 30.

[0068] In some embodiments, in order 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, wherein the outer sleeve 12 is sleeved on one end of the valve body 14, and the other end of the valve body 14 is connected to the connecting head 11, and 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 are combined to form a housing chamber 40 that cooperates with the valve core 20 and allows the valve core 20 to rotate. The specific housing chamber 40 may be a concave groove with a square cross section. In order to facilitate sealing and rotation accuracy, the valve core 20 may include a disc portion and a sleeve portion, the sleeve portion is sleeved on the valve body 14, and the sleeve portion is rotatably matched, and a sealing ring 30 is provided between the sleeve portion and the valve body 14. The radial inner side of the sleeve portion is connected to the outer edge of the disc portion, and one end of the sleeve portion is abutted against the valve body 14, and the other end is abutted against the inner protrusion of the outer sleeve 12 and the inner side is connected to the above-mentioned disc portion, so as to axially limit the sleeve portion through the inner protrusion of the outer sleeve 12 and the valve body 14, and then axially limit the valve core 20. Specifically, a rotation slot 122 and a rotation protrusion 121 can be provided on the outer sleeve 12 to respectively cooperate with the rotation slot 122 and the rotation protrusion 121 on the docking end 200 to achieve rotational locking, wherein the valve core 20 has a pushing slot 23 aligned with the introduction slot of the rotation slot 122 to cooperate with the rotation protrusion 121 on the docking end 200, so that after the rotation protrusion 121 of the docking end 200 enters the guide slot 123, it can enter the pushing slot 23, and then rotate to enter the rotation slot 122 to complete the rotational locking, and while rotating, the valve core 20 is pushed to rotate, such as after the valve core 20 is pushed to rotate from the first position 201 to the second position 202, the rotation protrusion 121 and the rotation slot 122 are completely locked. The valve core 20 rotates in the reverse direction until the rotating protrusion 121 is disengaged from the rotating groove 122 to align with the guide groove 123. At this time, the valve core 20 rotates in the reverse direction and returns to the first position 201. Then, the butt end 200 and the connecting end 100 can be disengaged from each other. When the butt end 200 and the connecting end 100 have the same structure, the rotating protrusion 121 of the connecting end 100 pushes the valve core 20 in the butt end 200 to rotate to realize opening and closing.

[0069] Furthermore, in order to conveniently limit the rotation of the valve core 20, a positioning pin and a positioning hole may be provided between the valve core 20 and the valve body 14 to cooperate with each other to limit relative rotation. For example, a positioning pin whose axis is coaxial with the valve core 20 is provided at the center of the valve core 20, the positioning pin is fixedly connected to the valve core 20, and the valve body 14 is correspondingly provided with a positioning hole.

[0070] After the rotating groove 122 and the rotating protrusion 121 are provided on the outer sleeve 12, when it is necessary to form a fixed position relationship between the rotating protrusion 121 and the valve channel 141, a sliding fitting relationship can be formed between the outer sleeve 12 and the valve body 14 through a limiting structure, and 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 is threadedly connected with the outer sleeve 12 to achieve fixation to each other.

[0071] The valve core 20 is provided with a plurality of communication holes 22 corresponding to each valve channel 141. When the valve core 20 rotates until the communication holes 22 are aligned with the valve channel 141, the valve channel 141 is opened; when the valve core 20 rotates until the communication holes 22 are staggered with the valve channel 141 so that the valve core 20 physically blocks the valve channel 141, the valve channel 141 is closed. The communication holes 22 are preferably circular holes, and preferably have the same cross-sectional structure and size as the valve channel 141. The valve channel 141 is preferably a straight channel.

[0072] In some embodiments, a connecting head 11 is provided, so that one end of the connecting head 11 has an external channel 111 inside, and the other end forms an expansion cavity that docks with the external channel 111 and gradually expands in the direction away from the external channel 111, so as to form the above-mentioned expansion cavity 112, wherein the valve body 14 is provided with a center hole 142 that gradually shrinks 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 center hole 142 is connected with the valve channel 141. In the axial direction, the projections of each valve channel 141 and the center hole 142 in the center all fall on the inner side of the channel wall at the large diameter end of the expansion cavity 112. The center hole 142 is preferably in a truncated cone shape, and the overlap area with the valve channel 141 is large at the larger cross section, and the overlap area gradually decreases along the hole depth direction. The connecting head 11 is preferably sealed by a sealing device between the threaded connection with the valve body 14.

[0073] Based on the connection end 100 provided in the above embodiment, the present invention further provides a fluid connector, which includes any one of the connection ends 100 in the above embodiment, and the fluid connector includes two connection ends 100, one of the two connection ends 100 is arranged in cooperation with the other connection end 100 to serve as a docking end 200, and the valve channels 141 of the two are connected to each other in a one-to-one correspondence in the connected state, and the specific structure of the connection end 100 can refer to any of the above embodiments. Since the fluid connector adopts the connection end 100 in the above embodiment, please refer to the above embodiment for the beneficial effects of the fluid connector.

[0074] As described above, a fluid connector is provided, including two butted connection ends 100, one connection end 100 serving as the butt end of the other connection end 100, each of the connection ends 100 forming an external channel 111, at least one of the two connection ends 100 having a rotatable valve core 20, a plurality of valve channels 141 being evenly arranged around the rotation axis of the valve core 20 to connect the external channels 111 of the two butted connection ends 100; and when the valve core 20 rotates to the first position 201, each of the valve channels 141 is closed; when the valve core 20 rotates to the second position 202, each of the valve channels 141 is opened. Some structures of the specific connection end 100 can be referred to as shown in the accompanying drawings, and can also be referred to as the connection end 100 shown in any of the above embodiments.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting end of a fluid connector, used to cooperate with a docking end (200), the connecting end comprising a valve seat (10) and a valve core (20); characterized in that: The valve seat (10) comprises an external channel (111) and a valve channel (141), and at least one of the external channels (111) is connected to a plurality of the valve channels (141); the valve core (20) is movably arranged on the valve seat (10) so as to be movable to a first position (201) and a second position (202); for each of the valve channels (141) connected to at least one of the external channels (111): when the valve core (20) moves to the first position (201), the corresponding valve channels (141) are closed; and when the valve core (20) moves to the second position (202), the corresponding valve channels (141) are opened.

2. The connection terminal according to claim 1, characterized in that: When the valve core (20) moves to the first position (201), each blocking portion (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 portion (21) of the valve core (20) is located at each staggered position (143) to avoid the corresponding valve channel (141) to open the valve channel (141); along the moving direction of the valve core (20), the staggered positions (143) and the valve channel (141) are arranged alternately in sequence.

3. The connection terminal according to claim 1, characterized in that: The valve seat (10) comprises an expansion cavity (112) whose cross section gradually expands from the first end to the second end, the first end of the expansion cavity (112) being connected to the inner opening (1112) of the external channel (111), and the second end of the expansion cavity (112) being connected to each corresponding valve channel (141).

4. The connection terminal according to claim 3, characterized in that: It also includes a center hole (142) whose depth direction is consistent with the extension direction of the valve channel (141), and the two lateral sides of the center hole (142) are respectively connected to the corresponding side of each valve channel (141) on the side, and one end of the center hole (142) facing the expansion cavity (112) is connected to and communicated with the center part of the large mouth end of the expansion cavity (112).

5. The connection terminal according to claim 4, characterized in that: The cross section of the central hole (142) gradually decreases in a direction away from the expansion cavity (112).

6. The connection terminal according to claim 1, characterized in that: The cross-sectional area of ​​the external channel (111) is smaller than the sum of the cross-sectional areas of the correspondingly connected valve channels (141); and / or the cross-sectional area of ​​the external channel (111) is circular; and / or the cross-sectional areas of the valve channels (141) are all circular.

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

8. The connection terminal according to claim 7, characterized in that: The valve core (20) comprises two valve channels (141), the two valve channels (141) are centrally symmetrically arranged relative to the rotation axis of the valve core (20), and the external channel (111) is coaxially arranged with the rotation axis of the valve core (20); the valve core (20) is disc-shaped; 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 to the connecting head (11); the end of the connecting head (11) away from the valve body (14) has an external passage (111); and the outer sleeve (12) and the valve body (14) are combined to form a receiving chamber that cooperates with the valve core (20) and allows the valve core (20) to rotate. (40); the valve core (20) is provided with a plurality of communication holes (22) respectively corresponding to the valve channels (141); when the valve core (20) rotates until the communication holes (22) are aligned with the valve channels (141), the valve channels (141) are opened; when the valve core (20) rotates until the communication holes (22) are offset from the valve channels (141) so that the valve core (20) physically blocks the valve channels (141), the valve channels (141) are closed; The outer sleeve (12) has a rotational clamping groove (122) for rotationally clamping with the rotational clamping protrusion (121) on the docking end (200); the valve core (20) has a pushing groove (23) that matches with the rotational clamping protrusion (121) on the docking end (200); the outer sleeve (12) has a rotational clamping protrusion (121) that matches with the rotational clamping groove (122) and the pushing groove (23) on the docking end (200), so that the valve core (20) can be pushed to rotate synchronously when the outer sleeve (12) is rotationally clamped with the docking end (200).

9. The connection terminal according to claim 8, characterized in that: One end of the connecting head (11) has the external channel (111) inside, and the other end has an expansion cavity (112) formed inside, which is connected to the external channel (111) and gradually expands in a direction away from the external channel (111). The valve body (14) has a center hole (142) at the center of one end facing the connecting head (11) and gradually shrinks in a direction away from the connecting head (11). The side of the center hole (142) is connected to the valve channel (141). In the axial direction, the projections of each valve channel (141) and the center hole (142) at the center all fall on the inner side of the second end channel wall of the expansion cavity (112).

10. A fluid connector, characterized in that: It comprises a connection end (100) as claimed in any one of claims 1 to 9, wherein one of the two connection ends (100) is arranged in cooperation with the other connection end (100) to serve as a docking end (200), and in a connected state, the valve channels (141) of the two are connected to each other in a one-to-one correspondence.

11. A fluid connector, characterized in that: The invention comprises two butt-jointed connection ends (100), each of the connection ends (100) forming an external channel (111), at least one of the two connection ends (100) having a rotatable valve core (20), a plurality of valve channels (141) being evenly arranged around a rotation axis of the valve core (20) so as to connect the external channels (111) of the two butt-jointed connection ends (100); and when the valve core (20) is rotated to a first position (201), each of the valve channels (141) is closed; and when the valve core (20) is rotated to a second position (202), each of the valve channels (141) is opened.

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