Connecting end and liquid connector

Abstract

A connecting end (1), which is used to cooperate with a docking end (1a). The connecting end (1) comprises a valve seat (100) and a valve core (200). The valve seat (100) is internally provided with a flow channel (110). The valve core (200) is movably provided in the valve seat (100). The valve core (200) is provided with a pushing recess (210). The pushing recess (210) is used for inserting a pushing part (150a) on the docking end (1a) and for driving the valve core (200) to move, so as to open or close the flow channel (110). The valve core (200) is an integrated structure, and at least a wall surface (260) in contact with the valve seat (100) is made of a plastic material so as to be sealed with the valve seat (100). The connecting end (1) is directly sealed with the valve seat (100) by using the valve core (200), so that liquid in the flow channel (110) is blocked from the outside, thereby prevent liquid in the flow channel (110) from leaking from a matching surface between the valve core (200) and the valve seat (100). Furthermore, the valve core (200) is an integrated structure, which avoids a reduction in sealing performance caused by displacement of a conventional sealing pad, and improves the sealing reliability of the connecting end (1). The structure is simplified, and the assembly process is simpler. A liquid connector, which has the same technical effect.

Description

A connecting end and a fluid connector

[0001] The present application claims priority to the Chinese patent application No. 202420765152.X, filed on April 12, 2024, and entitled "A connecting end and a fluid connector", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of connectors, more particularly, to a connecting end and a fluid connector. BACKGROUND

[0003] A fluid connector generally comprises a connecting end and a mating end, which can be identical or different in structure. When the connecting end and the mating end are disconnected, each of them is individually sealed to disconnect the fluid source and prevent fluid leakage and spraying. When the connecting end and the mating end are connected, the sealing structure of each of them is opened to allow fluid communication between the connecting end and the mating end. The fluid connector can be used to connect a fluid source and a fluid radiator, and can be used as an interface between the fluid source and various radiators to dissipate heat through fluid circulation, thereby achieving efficient heat dissipation. Compared with traditional air cooling, the fluid connector can be better applied to high heat dissipation requirements of chips and other components.

[0004] In the process of implementing the present application, the inventors have found at least the following problems in the prior art:

[0005] A common connecting end switches between open and closed states by the movement of a valve core in a valve seat. To form a seal with the outside world and block the entire flow passage from the outside world, a sealing gasket is arranged between the valve core and the valve seat to keep the flow passage isolated from the outside world within the movement range of the valve core between the open position and the closed position. The sealing gasket needs to be assembled in place in advance, so the assembly process is relatively complicated. During the movement of the valve core, the damping force of the valve core and the sealing gasket has the risk of displacing the sealing gasket, thereby affecting the sealing reliability. SUMMARY

[0006] Therefore, the present application aims to provide a connecting end and a fluid connector to improve the poor sealing reliability of the connecting end.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] A connecting end for cooperating with a mating end, comprising:

[0009] a valve seat, which is internally provided with a flow passage, and is provided with a displacement avoiding groove;

[0010] A valve core is movably arranged in the valve seat, and a pushing groove is arranged on the valve core corresponding to the avoiding groove, the pushing groove is used for the pushing part on the docking end to insert and drive the valve core to move, so as to open or close the flow channel, the valve core is a one-piece structure, and at least the wall surface in contact with the valve seat is made of plastic material to seal with the valve seat.

[0011] The connecting end is used for cooperation with the docking end, and the connecting end comprises a valve seat and a valve core. The inside of the valve seat is provided with a flow channel, and the valve seat is provided with an avoiding groove. The valve core is movably arranged in the valve seat, and a pushing groove is arranged on the valve core corresponding to the avoiding groove. The pushing groove is used for the pushing part on the docking end to insert and drive the valve core to move, so as to open or close the flow channel. The valve core is a one-piece structure, and at least the wall surface in contact with the valve seat is made of plastic material to seal with the valve seat.

[0012] The connecting end is used for cooperation with the docking end, and the connecting end comprises a valve seat and a valve core. The inside of the valve seat is provided with a flow channel, and the valve seat is provided with an avoiding groove. The valve core is movably arranged in the valve seat, and a pushing groove is arranged on the valve core corresponding to the avoiding groove. The pushing groove is used for the pushing part on the docking end to insert and drive the valve core to move, so as to open or close the flow channel. The valve core is a one-piece structure, and at least the wall surface in contact with the valve seat is made of plastic material to seal with the valve seat.

[0013] Optionally, in the connecting end, a protrusion is arranged on the wall surface of the valve core in contact with the valve seat.

[0014] Optionally, in the connecting end, a through hole is arranged on the valve core, the valve core can be moved to an open state in which the through hole and the flow channel are in the open state and a closed state in which the through hole and the flow channel are in the closed state. The protrusion comprises a first protruding ring and a second protruding ring. The first protruding ring is arranged along the edge of the through hole. At least part of the second protruding ring is arranged outside the first protruding ring and is spaced apart from the first protruding ring. During the movement of the valve core from the open state to the closed state, the flow channel is always located within the hollow range of the second protruding ring.

[0015] Optionally, in the connecting end, the cross section of the protrusion is isosceles trapezoidal or rectangular, and the outer end surface of the protrusion is provided with a convex edge or a concave pit.

[0016] Optionally, in the connecting end, the plastic material comprises an engineering plastic.

[0017] Optionally, in the connecting end, the material of the valve core comprises at least one of polytetrafluoroethylene, polyamide, polyoxymethylene, and polyurethane.

[0018] Optionally, in the connecting end, the valve core is rotatably arranged in the valve seat, the valve core is provided with a first locking hole and a second locking hole, the valve seat is provided with a mounting hole, and the connecting end comprises a locking pin movably arranged in the mounting hole along an axial direction, when the valve core is rotated to a state of closing the flow channel, the locking pin is locked in the first locking hole, and when the valve core is rotated to a state of opening the flow channel, the locking pin is locked in the second locking hole.

[0019] Optionally, in the connecting end, the locking pin comprises a sliding member, an elastic member, and a locking member, the elastic member is arranged between the sliding member and the mounting hole, and is used to push the sliding member into the first locking hole or the second locking hole, and the locking member is used to lock the sliding member at a position of exiting the first locking hole and the second locking hole.

[0020] Optionally, in the connecting end, the valve seat comprises a valve seat body and a valve cover, the valve core is arranged between the valve seat body and the valve cover, and the end faces of the valve core matched with the valve cover and the valve seat body are both made of plastic.

[0021] Optionally, in the connecting end, the valve cover is provided with a pushing part used to be inserted into a pushing groove of the valve core of the counter connecting end, and the avoiding groove is arranged on the valve cover and used for the pushing part of the counter connecting end to pass through and slide relative to.

[0022] To achieve the above-mentioned purpose, the application further provides a fluid connector comprising any one of the above-mentioned connecting ends. Since the above-mentioned connecting end has the above-mentioned technical effects, the fluid connector with the connecting end should also have corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Fig. 1 is an exploded structural schematic view of a connecting end in a closed state according to one specific embodiment of the present application;

[0025] Fig. 2 is an exploded structural schematic view of the connecting end in an open state according to Fig. 1;

[0026] Fig. 3 is a cross-sectional schematic view of the connecting end in a closed state according to Fig. 1;

[0027] Fig. 4 is a sectional view of the connection end shown in Fig. 1 in an open state;

[0028] Fig. 5 is a three-dimensional view of the valve core shown in Fig. 1;

[0029] Fig. 6 is a front view of Fig. 5;

[0030] Fig. 7 is a view of the cooperation between the connection end and the counter-connection end shown in Fig. 1;

[0031] Fig. 8 is a view of the counter-connection end shown in Fig. 7;

[0032] Fig. 9 is an exploded view of the connection end in a closed state according to another embodiment of the present application;

[0033] Fig. 10 is a view of the fluid connector in an open state according to an embodiment of the present application;

[0034] Fig. 11 is a view of the fluid connector in a corresponding closed state according to an embodiment of the present application;

[0035] In the drawings, the following signs are used: 1-connection end, 1a-counter-connection end; 100-valve seat, 200-valve core, 300-locking pin; 110-flow channel, 120-mounting hole, 130-valve seat body, 140-valve cover, 150-pushing part, 160-avoiding slot, 170-mounting slot; 210-pushing slot, 220-protrusion, 230-through hole, 240-first locking hole, 250-second locking hole, 260-wall surface, 221-first protruding ring, 222-second protruding ring; 310-sliding part, 320-elastic part, 330-locking part; 10-male end, 20-female end, 11-male end flow-through opening, 21-female end flow-through opening, 30-sealing part; 100a-valve seat of the counter-connection end, 200a-valve core of the counter-connection end, 150a-pushing part of the counter-connection end, 210a-pushing slot of the counter-connection end. DETAILED DESCRIPTION

[0036] The embodiments of the present application disclose a connection end and a fluid connector to improve the sealing reliability of the connection end.

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] The connecting end is used for connecting with the mating end. The structure of the mating end can be the same as or different from that of the connecting end. When the fluid source is disconnected, the connecting end and the mating end are individually sealed. When the connecting end and the mating end are connected, they are respectively opened, so that the connecting end and the mating end can form a communicating fluid channel. The connecting end comprises a valve seat and a valve core. The valve core is constrained to be movable relative to the valve seat within a preset range and to open or close the flow passage. In order to realize the sealing between the valve core and the valve seat, the wall surface of the valve core at least in contact with the valve seat is made of plastic material to form the sealing with the valve seat by the valve core itself. In the following embodiments, the structure and cooperation mode of the valve core and the valve seat are mainly described.

[0039] In one specific embodiment, referring to FIGS. 1-8, the connecting end 1 provided by the application is used for cooperating with the mating end 1a. The connecting end 1 comprises a valve seat 100 and a valve core 200. The valve seat 100 is internally provided with a flow passage 110, and the valve seat 100 is provided with a position avoiding groove 160. The valve core 200 is movably arranged in the valve seat 100, and the valve core 200 is provided with a pushing groove 210 corresponding to the position avoiding groove 160. The pushing groove 210 is used for inserting the pushing part 150a on the mating end 1a and driving the valve core 200 to move, so as to open or close the flow passage 110. The pushing part 150a of the mating end 1a can specifically pass through the position avoiding groove 160 to insert the pushing groove 210 of the valve core 200, or the valve core 200 can be arranged to pass through the position avoiding groove 160 to cooperate with the pushing part 150a of the mating end 1a. The valve core 200a of the connecting end 1 can move with the pushing part 150a on the mating end 1a, that is, the driving of the valve core 200 is driven by the pushing part 150a on the mating end 1a, and the movement of the valve core 200 can open or close the flow passage 110 of the valve seat 100. It can be understood that the shape of the pushing groove 210 should be correspondingly arranged according to the shape of the pushing part 150a of the mating end 1a. The valve core 200 is an integral structure, and the wall surface 260 at least in contact with the valve seat 100 is made of plastic material to seal the valve seat 100. The wall surface 260 at least in contact with the valve seat 100 of the valve core 200 is made of plastic material. By using the characteristics of the plastic material, effective sealing between the valve core 200 and the valve seat 100 can be realized. The integral valve core 200 is stable in structure. It can be understood that the valve core 200 can be integrally formed by using plastic material, or the part in contact with the valve seat 100 can be integrally formed by using plastic material and a base body. The base body includes but is not limited to a metal base body, a polymer material base body, a composite material base body, etc.

[0040] The connecting end 1 provided by the application can be connected with the mating end 1a to be connected, the pushing groove 210 on the valve core 200 of the connecting end 1 is inserted by the pushing part 150a of the mating end 1a, the mating end 1a moves relative to the connecting end 1, so that the pushing part 150a of the mating end 1a drives the valve core 200 to move, so as to open the flow channel 110. When disconnecting, the mating end 1a and the connecting end 1 move reversely, the pushing part 150a of the mating end 1a drives the valve core 200 to move reversely, so as to close the flow channel 110. The wall surface 260 of the valve core 200 at least in contact with the valve seat 100 is made of plastic material, so that the valve core 200 directly seals with the valve seat 100, that is, the fluid in the flow channel 110 is blocked from the outside, so as to prevent the fluid in the flow channel 110 from leaking through the matching surface between the valve core 200 and the valve seat 100. The valve core 200 is a one-piece structure, the sealing is realized by the valve core 200, the sealing performance is improved due to the displacement of the conventional sealing gasket, the sealing reliability of the connecting end 1 is improved. The structure is simplified, the assembly process is simpler, and the production efficiency is improved and the production cost is reduced.

[0041] Specifically, the valve seat 100 is provided with a pushing part 150, and the mating end 1a includes a valve seat 100a and a valve core 200a. The valve core 200a of the mating end 1a is movably arranged in the valve seat 100a, the valve core 200a is provided with a pushing groove 210a, and the pushing part 150 on the connecting end 1 is used to insert into the pushing groove 210a of the valve core 200a of the mating end 1a to drive the valve core 200a to move. When the connecting end 1 and the mating end 1a are inserted, the pushing part 150 of the connecting end 1 is inserted into the pushing groove 210a of the mating end 1a, the pushing part 150a of the mating end 1a is inserted into the pushing groove 210 of the connecting end 1, and the valve seat 100 of the connecting end 1 moves relative to the valve seat 100a of the mating end 1a, so that the pushing part 150 of the connecting end 1 and the pushing part 150a of the mating end 1a move correspondingly to drive the valve core 200 of the connecting end 1 and the valve core 200a of the mating end 1a to move, so as to simultaneously switch the opening and closing states of the connecting end 1 and the mating end 1a. As described above, the operation is greatly facilitated.

[0042] In some embodiments, the valve core 200 is provided with a through hole 230, and the valve core 200 can be moved to a state where the through hole 230 is in communication with the flow passage 110 and a state where the through hole 230 is out of communication with the flow passage 110. That is, the opening and closing of the flow passage 110 is realized by changing the relative position of the through hole 230 and the flow passage 110 when the valve core 200 rotates. Specifically, referring to FIGS. 2 and 4, when the valve core 200 is moved to a state where the through hole 230 is in communication with the flow passage 110, the connection end 1 is opened; referring to FIGS. 1 and 3, when the valve core 200 is moved to a state where the through hole 230 is out of communication with the flow passage 110, the connection end 1 is closed. It can be understood that the communication between the through hole 230 and the flow passage 110 of the valve core 200 can mean that the through hole 230 and the flow passage 110 are at least partially opposite to each other to communicate, or that the through hole 230 and the flow passage 110 are directly opposite to each other to communicate, so that the fluid in the flow passage 110 can flow from one end of the flow passage 110 to the other end of the flow passage 110 through the through hole 230, and the connection end 1 is opened. The out-of-communication between the through hole 230 and the flow passage 110 of the valve core 200 means that the through hole 230 and the flow passage 110 are completely opposite to each other to not communicate, so that the fluid in the flow passage 110 cannot flow under the blocking action of the valve core 200, that is, the connection end 1 is closed. Specifically, when the valve core 200 is moved to a state where the through hole 230 is directly opposite to the flow passage 110, the connection end 1 is opened, and when the valve core 200 is moved to a state where the through hole 230 is completely opposite to the flow passage 110, the connection end 1 is closed.

[0043] In some embodiments, referring to FIGS. 5 and 6, the wall surface 260 of the valve core 200 in contact with the valve seat 100 is provided with a protrusion 220. By providing the protrusion 220, on the one hand, the extrusion force of the valve core 200 and the valve seat 100 can easily press the protrusion 220 tightly, thereby providing reliable sealing effect. On the other hand, the protrusion 220 can be used to realize sealing, which reduces the contact area of the valve core 200 and the valve seat 100, thereby reducing the resistance when the valve core 200 moves, facilitating the driving of the valve core 200 to move, that is, making the opening or closing operation of the connection end 1 more labor-saving.

[0044] In some embodiments, the valve core 200 is provided with a through hole 230, and the valve core 200 can be moved to a state where the through hole 230 is in an open state with the flow passage 110 and a state where the through hole 230 is in a closed state with the flow passage 110. The protrusion 220 includes a first protruding ring 221 and a second protruding ring 222, the first protruding ring 221 is arranged along the edge of the through hole 230, and the second protruding ring 222 is at least partially sleeved outside the first protruding ring 221 and is arranged in a spaced manner with the first protruding ring 221, and the flow passage 110 is located within the hollow range of the second protruding ring 222 during the movement of the valve core 200 from the open state to the closed state. The first protruding ring 221 and the second protruding ring 222 are annular, and it can be understood that the annular here is not limited to a circular ring, and also includes other shapes that are closed on four sides, and the specific shape of the first protruding ring 221 is arranged according to the shape of the through hole 230. By using the cooperation of the first protruding ring 221 and the second protruding ring 222, the first protruding ring 221 is arranged along the edge of the through hole 230 on the valve core 200, so that an effective seal between the cooperation surface of the valve core 200 and the valve seat 100 can be formed when the valve core 200 is moved to a state where the through hole 230 is in communication with the flow passage 110 to open, and the fluid is not easy to enter between the cooperation surface of the valve core 200 and the valve seat 100, that is, the fluid can better flow along the flow passage formed by the flow passage 110 and the through hole 230, thereby reducing or even eliminating the radial flow formed between the cooperation surface, thereby improving the turbulence caused by the radial flow, and further avoiding the problems of energy loss, noise and the like caused by the turbulence. The flow passage 110 is located within the hollow range of the second protruding ring 222 during the movement of the valve core 200 from the open state to the closed state with the flow passage 110, so the second protruding ring 222 ensures that the valve core 200 can always be sealed with the cooperation surface of the valve seat 100 within the movement range. Therefore, the cooperation of the first protruding ring 221 and the second protruding ring 222 not only realizes the effective sealing between the valve core 200 and the valve seat 100 within the movement range, but also reduces the influence of the cooperation surface on the fluid flow state when the valve core 200 is in the open state, and the contact surface between the valve core 200 and the valve seat 100 is small, so the resistance formed by the movement of the valve core 200 is small, thereby facilitating the operation of opening or closing the connection end 1.

[0045] In some embodiments, part of the first protruding ring 221 is formed as part of the second protruding ring 222, that is, the first protruding ring 221 and the second protruding ring 222 share part of the local. The second protruding ring 222 is sleeved outside the through hole 230 and shares part of the first protruding ring 221 along the edge of the through hole 230, so as to realize reliable sealing while greatly reducing the contact area between the valve core 200 and the valve seat 100.

[0046] Specifically, the second convex ring 222 is arranged along the shortest path around the projection track of the flow channel 110, and the projection track of the flow channel 110 is a track formed by the projection of the flow channel 110 on the valve core 200 within the activity range of the valve core 200. The valve core 200 is arranged to be movable relative to the valve seat 100, that is, the valve core 200 can move relative to the valve seat 100, and it is generally considered that the valve seat 100 remains stationary, and the valve core 200 moves relative to the valve seat 100, and the projection track of the flow channel 110 on the valve core 200 within the activity range of the valve core 200 is formed, and the second convex ring 222 is arranged along the shortest path around the track. If the relative motion of the valve core 200 and the valve seat 100 is considered as the valve core 200 being stationary and the valve seat 100 rotating relative to the valve core 200, the second convex ring 222 is arranged along the shortest path around the activity track of the flow channel 110. The second convex ring 222 is arranged as above, which can achieve effective sealing, and at the same time, the length of the second convex ring 222 is the shortest, so that the resistance to the activity of the valve core 200 is the smallest.

[0047] In some embodiments, the cross section of the convex 220 is isosceles trapezoidal or rectangular. The upper top of the isosceles trapezoid is the outer end of the flange, and the lower bottom is the end connected to the main body of the valve core 200. As arranged above, the convex 220 has stable structure, and the stress is more uniform when it is extruded, so that uniform deformation can be achieved to provide effective and reliable sealing effect.

[0048] In some embodiments, the outer end surface of the convex 220 is provided with a convex rib or a concave pit. Through the arrangement of the convex rib or the concave pit, when the convex 220 is extruded on the valve seat 100, on the one hand, it is easy to deform to tightly achieve reliable sealing, and on the other hand, it can increase the contact area with the valve seat 100, thereby improving the sealing effect. The specific convex rib or concave pit can be arranged in a netted shape.

[0049] In some embodiments, the plastic material includes engineering plastic. Specifically, the material of the valve core 200 includes engineering plastic. Engineering plastic is a plastic that can be used as an engineering material and instead of metal. Engineering plastic has excellent comprehensive performance, high rigidity, small creep, high mechanical strength, good heat resistance, good electrical insulation, and can be used in harsh chemical and physical environments for a long time, and can be used as an engineering structure material instead of metal. Therefore, engineering plastic is used to provide sealing while having good durability.

[0050] In some embodiments, the material of the valve core 200 includes at least one of polytetrafluoroethylene, polyamide, polyoxymethylene, and polyurethane. That is, the valve core 200 can be made of one of the above materials alone or made of at least two of the above materials. Polytetrafluoroethylene has excellent chemical corrosion resistance, excellent high temperature resistance, and low friction coefficient. Its excellent chemical corrosion resistance makes it suitable for corrosive fluids, its extremely low friction coefficient makes the valve core 200 have less resistance in relative motion with the valve seat 100, and it has high efficiency and long service life. In addition, its good wear resistance can serve for a long time under harsh conditions such as heavy load, high speed, and high temperature. Polyamide, polyoxymethylene, and polyurethane can also provide good sealing performance.

[0051] In some embodiments, the through hole 230 is provided with chamfers at both ends, so that it is not easy to be extruded when the valve core 200 moves relative to the valve seat 100, reducing the wear at the edges during the movement of the valve core 200, thereby ensuring the reliability of the connection end 1.

[0052] In some embodiments, the valve core 200 is rotatably arranged in the valve seat 100. The valve core 200 is arranged to be rotatable, and the opening and closing state of the flow passage 110 is switched by rotating the valve core 200, specifically, the position relationship between the through hole 230 and the flow passage 110 is switched. The valve core 200 occupies a small space when arranged to be rotatable, and the movement stroke of the valve core 200 required to realize the opening and closing state of the connection end 1 is small, thereby facilitating operation. Specifically, the rotation axis of the valve core 200 is parallel to the axis of the through hole 230.

[0053] In some embodiments, the valve core 200 is provided with a first locking hole 240 and a second locking hole 250, the valve seat 100 is provided with a mounting hole 120, the connecting end 1 comprises a locking pin 300 movably arranged in the mounting hole 120 along the axial direction, when the valve core 200 is moved to the state of closing the flow passage 110, the locking pin 300 is locked in the first locking hole 240, and when the valve core 200 is moved to the state of opening the flow passage 110, the locking pin 300 is locked in the second locking hole 250. It can be understood that the movement of the locking pin 300 along the axial direction of the valve core 200 includes both the translation of the locking pin 300 along the axial direction and the stretching of the locking pin 300 along the axial direction. By arranging the locking pin 300, when the valve core 200 is moved to the open position, that is, the entire flow passage 110 forms a passage, the connecting end 1 is in the open state, and the locking pin 300 is inserted into the second locking hole 250, thereby locking the position of the valve core 200, that is, the valve core 200 cannot continue to rotate relative to the valve seat 100, so that the connecting end 1 can be reliably kept in the open state. When the valve core 200 is moved to the closed position, the locking pin 300 is inserted into the first locking hole 240, thereby locking the position of the valve core 200, that is, the valve core 200 cannot continue to move relative to the valve seat 100, so that the connecting end 1 can be reliably kept in the closed state. In addition, through the cooperation of the locking pin 300 and the first locking hole 240 and the second locking hole 250, the rotating position of the valve core 200 can be reminded when the connecting end 1 is opened or closed, such as sound reminder, hand feeling reminder caused by different resistance, etc., and the structure is simple and the positioning is accurate. Moreover, through the cooperation of one locking pin 300 and the first locking hole 240 and the second locking hole 250, the structure is simple. In the case that the valve core 200 is rotatable arranged in the valve seat 100, the first locking hole 240 and the second locking hole 250 can be distributed along the circumferential direction.

[0054] In some embodiments, the locking pin 300 comprises a sliding member 310, a resilient member 320 arranged between the sliding member 310 and the mounting hole 120 for pushing the sliding member 310 into the first locking hole 240 or the second locking hole 250, and a locking member 330 for locking the sliding member 310 in a position out of the first locking hole 240 and the second locking hole 250. The resilient member 320 is arranged to provide a force to the sliding member 310 to extend into the first locking hole 240 or the second locking hole 250, so that when the valve core 200 is rotated to align the first locking hole 240 or the second locking hole 250 with the sliding member 310, the sliding member 310 extends into the first locking hole 240 or the second locking hole 250 under the action of the resilient member 320. At the same time, the resilient member 320 is arranged to provide a clicking sound when the sliding member 310 extends into the first locking hole 240 or the second locking hole 250, so as to facilitate the operator to accurately grasp the rotation position of the valve core 200. In addition, the locking member 330 is arranged to lock the sliding member 310 in a position out of the first locking hole 240 and the second locking hole 250, so that when the valve core 200 needs to be rotated to change the opening or closing state of the flow passage 110, the sliding member 310 can be retracted to exit the first locking hole 240 and the second locking hole 250 by overcoming the force of the resilient member 320, and the sliding member 310 is locked in the retracted state by the action of the locking member 330, so that the user does not need to manually act on the sliding member 310 to keep it in the retracted state when rotating the valve core 200, greatly facilitating the operation. After the locking member 330 is unlocked, the resilient member 320 drives the sliding member 310 to extend to insert into the corresponding first locking hole 240 or second locking hole 250. The locking member 330 can specifically adopt a push-push locking structure matched with the sliding member 310, i.e. when the sliding member 310 is pressed in the retracted direction, the sliding member 310 is locked in the retracted position, and when the sliding member 310 is pressed again in the retracted direction, the sliding member 310 is unlocked and reset to the extended position. Alternatively, the locking member 330 can also adopt a magnetic attraction structure. For ease of operation, part of the sliding member 310 can be exposed from the valve seat 100.

[0055] In some embodiments, the valve seat 100 comprises a valve seat body 130 and a valve cover 140, and the valve core 200 is arranged between the valve seat body 130 and the valve cover 140. The end surfaces of the valve core 200 that are in contact with the valve cover 140 and the valve seat body 130 are made of plastic. By arranging the valve seat 100 in a split structure, the valve core 200 is arranged between the valve seat body 130 and the valve cover 140, which facilitates the assembly of the valve core 200 and reduces the difficulty of assembly and manufacturing. The opposite ends of the valve core 200 are in contact with the valve cover 140 and the valve seat body 130, respectively, and the opposite ends of the valve core 200 are made of plastic to seal. Specifically, the opposite ends of the valve core 200 can be provided with protrusions 220, and the protrusions 220 at the two ends are the same in structure. Specifically, the valve seat body 130 and the valve cover 140 are detachably connected to facilitate later maintenance.

[0056] In some embodiments, the valve cover 140 is provided with a pushing portion 150 for inserting into the pushing groove 210a of the valve core 200a of the docking end 1a, and the avoidance groove 160 is arranged on the valve cover 140 and used for the pushing portion 150a of the docking end 1a to pass through and slide relative to. The pushing groove 210 on the valve core 200 is opposite to the avoidance groove 160 on the valve cover 140, and the avoidance groove 160 can be used for the pushing portion 150a of the docking end 1a to insert and move along the avoidance groove. With the movement of the pushing portion 150a of the docking end 1a, the valve core 200 of the connecting end 1 is driven by the pushing portion 150a to open or close. It can be understood that the pushing groove 210 is opposite to the avoidance groove 160, that is, the pushing portion 150a of the docking end 1a can pass through the avoidance groove 160 and insert into the pushing groove 210 to drive the movement of the valve core 200.

[0057] Furthermore, the avoidance groove 160 is also used to axially lock the pushing portion 150a of the docking end 1a and the valve seat 100 of the connecting end 1. The pushing portion 150a of the docking end 1a is used to drive the valve core 200 of the connecting end 1 to move, and at the same time can cooperate with the avoidance groove 160 to achieve axial locking of the pushing portion 150a of the docking end 1a and the valve seat 100 of the connecting end 1, that is, they are limited in the axial direction and remain connected without being disengaged. The two can specifically rotate relative to each other in the circumferential direction, so that the pushing portion drives the valve core 200 to rotate. With the above arrangement, the pushing portion is used to provide both the driving force for the rotation of the valve core 200 and the axial connection force. The avoidance groove 160 can be specifically arc-shaped, and the pushing portion 150a of the docking end 1a moves along the arc-shaped avoidance groove 160 when rotating. When connecting, hold the valve seat 100 of the connecting end 1 and the valve seat 100a of the butt end 1a with both hands, insert the pusher 150 of the valve seat 100 of the connecting end 1 into the avoidance groove of the valve seat 100a of the butt end 1a, and insert the pusher 150a of the valve seat 100a of the butt end 1a into the avoidance groove 160 of the valve seat 100 of the connecting end 1, so that the end faces of the valve seat 100 of the connecting end 1 and the valve seat 100a of the butt end 1a contact each other. Then, rotate the two hands in opposite directions. At this time, the pusher 150 of the connecting end 1 drives the valve core 200a of the butt end 1a to rotate, and the pusher 150a of the butt end 1a drives the valve core 200 of the connecting end 1 to rotate, until the connecting end 1 and the butt end 1a are simultaneously connected. To disconnect, rotate the valve seat 100 of the connecting end 1 and the valve seat 100a of the butt end 1a in the opposite directions mentioned above.

[0058] In some embodiments, the axial locking of the avoidance groove 160 and the push portion 150a on the docking end 1a can be achieved by forming an undercut structure with the push portion 150a and the avoidance groove 160 to limit the axial position. The size of one end of the avoidance groove 160 is larger than the undercut size to facilitate the insertion and removal of the push portion 150a of the docking end 1a. The push portion 150 on the corresponding connecting end 1 can be used to form an undercut with the avoidance groove on the docking end 1a. The avoidance groove 160 and the push portion 150 are arranged as described above, which has a simple structure and reliable fit.

[0059] In some embodiments, as shown in Figure 9 , the outer end surface of the valve seat 100 is provided with a mounting groove 170 for mounting a seal 30. The seal 30 is used to seal between the valve seat 100 and the butt end 1a. To facilitate sealing between the connecting end 1 and the butt end 1a, the mounting groove 170 is provided on the outer end surface of the valve seat 100. When docked with the butt end 1a, the seal 30 is positioned within the mounting groove 170 to achieve a seal between the connecting end 1 and the butt end 1a. Of course, the seal 30 should be provided with a clearance hole that mates with the flow channel 110 to achieve sealing without affecting the normal operation of the connecting end 1.

[0060] The application also provides a fluid connector, in some embodiments, referring to FIG. 10 and FIG. 11, the fluid connector comprises a male end 10 and a female end 20, at least one of the male end 10 and the female end 20 is any one of the connecting ends in the above embodiments. Since the fluid connector adopts the connecting end in the above embodiments, the beneficial effects of the fluid connector refer to the above embodiments.

[0061] In some embodiments, the male end 10 and the female end 20 are both any one of the connecting ends in the above embodiments, the male end 10 and the female end 20 are detachably connected in rotation, the male end 10 and the female end 20 can be relatively rotated to the male end face of the male end 10 and the female end face of the female end 20 are communicated to be in an open state and staggered to be in a disconnected state. Specifically, when the male end 10 and the female end 20 are relatively rotated, the pushing part on the valve seat of the male end 10 drives the valve core of the female end 20 to rotate, and the pushing part on the valve seat of the female end 20 drives the valve core of the male end 10 to rotate, so as to synchronously open or close the male end 10 and the female end 20.

[0062] In some embodiments, a sealing element 30 is arranged between the male end face and the female end face. The sealing element 30 comprises a first sealing part and a second sealing part, the first sealing part is annular, and the first sealing part is arranged on the male end 10 along the edge of the male end flow-through port 11 or arranged on the female end 20 along the edge of the female end flow-through port 21; the second sealing part is annular and at least partially sleeved outside the first sealing part and arranged in space with the first sealing part, and during the process that the male end 10 and the female end 20 are moved from the open state of the male end flow-through port 11 and the female end flow-through port 21 to the disconnected state, the male end flow-through port 11 and the female end flow-through port 21 are both located in the hollow range of the second convex ring 222.

[0063] In order to facilitate the arrangement of the end face sealing element 30, the male end face or the female end face can be provided with a mounting groove 170 for mounting the sealing element 30.

[0064] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0065] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connecting end, used to cooperate with a butt end (1a), characterized in that: include: A valve seat (100) is provided with a flow channel (110) therein, and the valve seat (100) is provided with a position-avoiding groove (160); The valve core (200) is movably arranged in the valve seat (100), and a push groove (210) is provided on the valve core (200) corresponding to the avoidance groove (160). The push groove (210) is used for the push portion (150a) on the docking end (1a) to be inserted and drive the valve core (200) to move to open or close the flow channel (110). The valve core (200) is an integrated structure and at least the wall surface (260) in contact with the valve seat (100) is made of plastic material to seal with the valve seat (100).

2. The connection terminal according to claim 1, characterized in that: A protrusion (220) is provided on the wall surface (260) where the valve core (200) contacts the valve seat (100).

3. The connection terminal according to claim 2, characterized in that: The valve core (200) is provided with a through hole (230), and the valve core (200) can move until the through hole (230) and the flow channel (110) are in an open state and the through hole (230) and the flow channel (110) are in a closed state; the protrusion (220) includes a first protrusion ring (221) and a second protrusion ring (222), the first protrusion ring (221) is arranged along the edge of the through hole (230), and at least a part of the second protrusion ring (222) is sleeved outside the first protrusion ring (221) and is spaced apart from the first protrusion ring (221); when the valve core (200) moves from the open state to the closed state, the flow channel (110) is always located in the hollow range of the second protrusion ring (222).

4. The connection terminal according to claim 2, characterized in that: The cross section of the protrusion (220) is in the shape of an isosceles trapezoid or a rectangle, and the outer end surface of the protrusion (220) is provided with a ridge or a pit.

5. The connection terminal according to claim 1, characterized in that: The plastic material includes engineering plastics.

6. The connection terminal according to claim 1, characterized in that: The material of the valve core (200) includes at least one of polytetrafluoroethylene, polyamide, polyoxymethylene, and polyurethane.

7. The connection end according to any one of claims 1 to 6, characterized in that: The valve core (200) is provided with a first locking hole (240) and a second locking hole (250), the valve seat (100) is provided with a mounting hole (120), and the connecting end includes a locking pin (300) movably arranged in the mounting hole (120) along the axial direction, when the valve core (200) moves to a state of closing the flow channel (110), the locking pin (300) is locked in the first locking hole (240), and when the valve core (200) moves to a state of opening the flow channel (110), the locking pin (300) is locked in the second locking hole (250).

8. The connection terminal according to claim 7, characterized in that: The locking pin (300) includes a sliding member (310), an elastic member (320) and a locking member (330), wherein the elastic member (320) is arranged between the sliding member (310) and the mounting hole (120) and is used to push the sliding member (310) into the first locking hole (240) or the second locking hole (250), and the locking member (330) is used to lock the sliding member (310) at a position where the sliding member exits the first locking hole (240) and the second locking hole (250).

9. The connecting end according to any one of claims 1 to 6, characterized in that: The valve seat (100) comprises a valve seat body (130) and a valve cover (140), the valve core (200) is arranged between the valve seat body (130) and the valve cover (140), and the end surfaces of the valve core (200) that respectively cooperate with the valve cover (140) and the valve seat body (130) are all made of plastic material.

10. The connection terminal according to claim 9, characterized in that: The valve cover (140) is provided with a pushing portion (150) for inserting into the pushing groove (210a) of the valve core (200a) of the butt end (1a); the avoidance groove (160) is provided on the valve cover (140) for the pushing portion (150a) of the butt end (1a) to pass through and slide relatively.

11. A fluid connector comprising a male end (10) and a female end (20), characterized in that: The male end (10) and / or the female end (20) is a connecting end according to any one of claims 1 to 10.

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