A quick connect and disconnect fluid connector

Abstract

The utility model provides a kind of fluid connector of quick connection and disconnection, including male connector and female connector, the male connector includes the first shell along axis extension, the first shell has smooth and continuous insertion part, radial bulge's locking portion.The female connector includes second shell, sliding sleeve, spherical locking member, push ring and respectively the second elastic member and third elastic member of the sliding sleeve and push ring provide reset force between second shell and sliding sleeve, and the sliding sleeve is slidably arranged on the outer periphery of second shell, spherical locking member is movably arranged on the front end of second shell, and push ring is arranged between second shell and sliding sleeve.The utility model can realize quick connection and disconnection, locking firm and reliable, zero pinch gas, zero overflow during plugging, medium flows smoothly, easy to install, disassemble and maintain.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling technology, specifically to a fluid connector for quick connection and disconnection in liquid cooling systems, which can be widely used in scenarios such as liquid cooling of data center servers, liquid cooling of new energy vehicle batteries, and liquid cooling of industrial equipment. Background Technology

[0002] Liquid cooling systems, with their high-efficiency heat dissipation performance, have been widely used in data center server clusters, new energy vehicle power batteries, industrial high-frequency equipment, and aerospace electronic equipment, becoming a core heat dissipation solution in high-power-density scenarios. Quick connectors, as key interface components for coolant transfer in liquid cooling systems, directly affect the system's sealing performance, ease of connection and disconnection, weather resistance, and long-term reliability, making them one of the core components ensuring the efficient and stable operation of liquid cooling systems.

[0003] Existing quick connectors for liquid cooling systems are mainly divided into three categories: threaded, snap-fit, and plug-in. Threaded connectors achieve sealing through thread engagement, providing a certain level of connection strength, but the insertion and removal process requires multiple rotations, which is time-consuming and cannot meet the rapid disassembly and assembly requirements of liquid cooling system maintenance and repair. Snap-fit ​​connectors achieve quick docking through the cooperation of elastic snaps and slots, improving insertion and removal efficiency. However, under high-pressure conditions (typically 0.3-1.5 MPa for liquid cooling systems), the snaps are prone to fatigue deformation due to stress concentration, leading to loosening of the connection and the risk of coolant leakage. Plug-in connectors rely on the axial fit between the valve core and valve sleeve for sealing, offering a simple structure and the most widespread application. However, commonly available plug-in connectors typically require two-hand operation, which is inconvenient, and can cause air trapping and overflow during insertion and removal, resulting in high medium flow resistance, necessitating improvement. Utility Model Content

[0004] To address the issues associated with pluggable connectors, this invention aims to provide a fluid connector for quick connection and disconnection. By optimizing the mating structure of the male and female connectors, the locking and sealing mechanisms are linked, improving connection reliability. It can be operated with one hand, with zero air trapping and zero overflow during insertion and removal, preventing media leakage. The optimized internal structure disperses the impact force of the media, reduces flow resistance, and enhances flow capacity.

[0005] To achieve the above objectives, this utility model provides a fluid connector for quick connection and disconnection, comprising a male connector and a female connector that mate with each other. The male connector includes: a first housing extending along an axis, the first housing having a smooth and continuous insertion portion and a radially raised locking portion;

[0006] The female connector includes: a second housing for receiving the male connector, the second housing having a flared portion and a housing portion, and symmetrically distributed waist-shaped locking holes along the circumferential direction at the connection between the flared portion and the housing portion;

[0007] A sliding sleeve is axially fitted around the outer periphery of the second housing. The inner side of the sliding sleeve is provided with a protruding ring. The sliding sleeve can move axially between a locked position and a released position.

[0008] A push ring that is axially movable and located between the second housing and the sliding sleeve;

[0009] A spherical locking member is movable within the waist-shaped keyhole, and the spherical locking member is held in a proximal position under the action of the convex ring and the push ring;

[0010] And a second elastic element and a third elastic element that respectively provide a restoring force to the sliding sleeve and the push ring;

[0011] When the male connector is connected to the female connector, the locking part on the first housing pushes the spherical locking member to the first distal position, and the spherical locking member interlocks with the locking part; when the sliding sleeve moves to the release position, the spherical locking member moves radially upward to the second distal position, the spherical locking member unlocks from the locking part, and the male connector is disconnected from the female connector.

[0012] Furthermore, the convex ring is adjacent to the outer concave portion and the inner concave portion, and the spherical locking member is located at the first distal position when placed in the inner concave portion and at the second distal position when placed in the outer concave portion.

[0013] Furthermore, the locking part includes a front conical surface, a flat top surface, and a rear conical surface.

[0014] Furthermore, the waist-shaped lock hole includes a cylindrical hole at the upper end and a tapered hole at the lower end.

[0015] Furthermore, the front end face of the push ring is an inclined surface.

[0016] Furthermore, the male connector also includes a valve core disposed in the first inner cavity of the first housing and a first elastic element that drives the valve core to reset. Under the action of the first elastic element, the valve core can selectively block or open the first inner cavity.

[0017] Furthermore, the female connector also includes a tail sleeve connected to the second housing, a valve stem disposed in the second inner cavity of the second housing, and a valve core ring. The tail sleeve defines the release position of the sliding sleeve, and the valve core ring selectively blocks or opens the second inner cavity.

[0018] Furthermore, the valve stem includes a pusher top, a stem body, and a base, the base being fixed to the tail sleeve via the second housing.

[0019] Furthermore, the second inner cavity is provided with a thrust section that limits the extreme insertion of the male connector, a smooth inner sealing section, and a limiting section and a guide section that limit and guide the axial movement of the valve core ring.

[0020] Furthermore, a second sealing element is provided on the inner sealing section, and a third sealing element is provided on the push top.

[0021] Furthermore, the valve core is provided with a cone portion, the first inner cavity is provided with a first cone surface, the push top is provided with a second cone surface, and the rod body is provided with a third cone surface. During the communication between the male connector and the female connector, the cone portion, the first cone surface, the second cone surface, and the third cone surface together disperse the impact force of the medium.

[0022] Furthermore, the valve core ring is provided with at least one balance hole, which is located on the transition portion.

[0023] Furthermore, a balancing groove is provided on the outer circumference of the guide portion of the valve core ring.

[0024] Compared with existing technologies, the advantages of this invention are that no tools are needed for docking; simply pushing the male connector achieves automatic locking. Disconnection can be achieved by sliding the sleeve with one hand, enabling rapid connection and disconnection and significantly improving operational efficiency. The locking part adopts a composite structure of a front conical surface, a flat top surface, and a rear conical surface. Combined with the synergistic effect of the spherical locking element, push ring, and elastic element, it exhibits excellent anti-disengagement performance after locking, adapting to complex working conditions such as vibration and pressure fluctuations, and preventing accidental disengagement. Through a multi-seal design of the first, second, and third sealing elements, and with the sequential control of seal switching during docking / disconnection, zero air trapping and zero overflow are ensured, effectively preventing media leakage. The conical part of the valve core tail cooperates with the first conical surface of the first housing, and the third and fourth conical surfaces of the valve stem, effectively dispersing the impact force of the media, reducing flow resistance, and improving the smoothness of media flow. The thrust section design prevents damage to components caused by over-insertion of the male connector, extending the connector's service life. The balance holes or grooves on the valve core ring balance the internal pressure difference. Combined with the reset action of the various elastic components, this ensures that the valve core and valve core ring quickly reset after disconnection, providing a timely and reliable seal. The tail sleeve and the second housing adopt a separate threaded connection structure, facilitating component installation, disassembly, and maintenance, and reducing operating costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the male and female connectors of this utility model before connection. At this time, the sliding sleeve is in the locked position and the ball locking member is held in the near end position.

[0026] Figure 2 This is a schematic diagram of the valve core structure of this utility model;

[0027] Figure 3This is a schematic diagram of the structure of the second housing of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the sliding sleeve of this utility model;

[0029] Figure 5 for Figure 1 Enlarged view of a portion of point A in the middle;

[0030] Figure 6 This is a schematic diagram of the external sealing critical point when the male and female connectors of this utility model are connected / disconnected;

[0031] Figure 7 This is a schematic diagram of the structure of the spherical locking component of this utility model when it contacts the front conical surface of the locking part;

[0032] Figure 8 This is a schematic diagram of the structure of the spherical locking component of this utility model when it is about to pass the sliding sleeve protrusion ring;

[0033] Figure 9 This is a schematic diagram of the structure of the spherical locking component of this utility model when it is located at the first distal end position;

[0034] Figure 10 This is a schematic diagram of the spherical locking component of this utility model when it is about to lock.

[0035] Figure 11 This is a schematic diagram of the structure of the spherical locking component of this utility model before it falls.

[0036] Figure 12 This is a schematic diagram of the structure of the spherical locking component of this utility model when it is fully locked;

[0037] Figure 13 This is a schematic diagram of the structure of the spherical locking component of this utility model when it is unlocked. At this time, the sliding sleeve is in the released position and the spherical locking component is in the second far end position.

[0038] Figure 14 This is a schematic diagram of the preferred structure of the valve core ring of this utility model;

[0039] Figure 15 This is a schematic diagram of another preferred structure of the valve core ring of this utility model.

[0040] In the figure, 100 is the male connector; 200 is the female connector; 11 is the first housing; 12 is the valve core; 13 is the first elastic element; 14 is the retractable part; 15 is the insertion part; 16 is the locking part; 17 is the front conical surface; 18 is the flat top surface; 19 is the rear conical surface; 20 is the vertical surface; 21 is the first annular groove; 22 is the first sealing element; 23 is the connecting part; 24 is the first end face; 25 is the stop block; 26 is the retaining ring; 27 is the first pushing surface; 28 is the... 29. First inner cavity; 30. First conical surface; 31. Valve core head; 32. Second housing; 33. Sliding sleeve; 34. Spherical locking element; 35. Tail sleeve; 36. Valve stem; 37. Thrust ring; 38. Valve core ring; 39. Second elastic element; 40. Third elastic element; 41. Second annular groove; 42. Fourth elastic element; 43. Third annular groove; 44. Protruding ring; 45. Thrust section; 46. Lower thrust surface; 47. Second seal; 48. Front thrust. 48. Third seal; 49. Rear thrust face; 50. Lock hole; 51. Outer recess; 52. Second end face; 53. Second push face; 54. Cylindrical hole; 55. Conical hole; 56. Valve core tail; 57. Claw; 58. First step; 59. Abutment; 60. Slot; 61. Inner recess; 62. First shoulder; 63. First shaft shoulder; 64. Second shaft shoulder; 65. Conical part; 66. Front end face; 67. Sealing element; 68. Second conical surface; 69. Third conical surface; 70. Second inner cavity; 71. Horn part; 72. Housing part; 73. Adapter part; 74. Second shoulder part; 75. Protrusion part; 76. Inner sealing section; 77. Push top; 78. Rod body; 79. Base; 80. Balance hole; 81. Inner shoulder; 82. Second step; 83. Balance groove; 84. Limiting section; 85. Guide section; 86. Sealing part; 87. Guide part; 88. Transition part. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The following describes some embodiments of this utility model in detail with reference to the accompanying drawings.

[0047] like Figure 1-5 As shown, the fluid connector for quick connection and disconnection according to this utility model includes a male connector 100 and a female connector 200 that mate with each other, and the male connector 100 and the female connector 200 can be selectively connected or disconnected. The male connector 100 includes a first housing 11 extending along the axis, and the female connector 200 includes a second housing 31 that receives the male connector 100, a sliding sleeve 32 that is slidably sleeved on the outer periphery of the second housing 31, a spherical locking member 33 that is movably disposed in the waist-shaped locking hole of the second housing 31, a push ring 36 disposed between the second housing 31 and the sliding sleeve 32, and a second elastic member 38 and a third elastic member 39 that provide a restoring force to the sliding sleeve 32 and the push ring 36.

[0048] Specifically, the first housing 11 includes an insertion portion 15, a locking portion 16, and a connecting portion 23. The insertion portion 15 has a smooth and continuous outer surface. The locking portion 16 receives the end of the insertion portion 15 and is radially raised, including a front conical surface 17, a flat top surface 18, and a rear conical surface 19. The rear conical surface 19 receives a vertical surface 20. The connecting portion 23 is located at the rear end of the first housing 11 and has external threads for connecting with pipelines. The first housing 11 has a through first inner cavity 28, which gradually narrows towards the first end face 24 of the insertion portion 15 to form a narrowing portion 14.

[0049] The second housing 31 is cylindrical, including a flared section 71 at the front end, a housing section 72 in the middle, and a connecting section 73 at the rear end. It has a through second inner cavity 70. See attached diagram for details. Figure 1 Or 3. The second inner cavity 70 includes a radially converging thrust section 44, a smooth inner sealing section 76, a radially expanding limiting section 84, and a guide section 85. At the connection between the flared part 71 and the housing part 72, there are waist-shaped locking holes 50 distributed symmetrically in the circumferential direction. The waist-shaped locking holes 50 are waist-shaped and include a cylindrical hole 54 at the upper end and a tapered hole 55 that converges inward at the lower end.

[0050] A spherical locking element 33 is disposed in an oblong locking hole 50, and the inner conical surface of the tapered hole 55 provides support to prevent the spherical locking element 33 from falling out of the oblong locking hole 50. The spherical locking element 33 can move axially in the oblong locking hole 50 and radially between a proximal position and a distal position.

[0051] The sliding sleeve 32 is cylindrical and sleeved on the outer periphery of the second housing 31. The sliding sleeve 32 can slide axially between a locked position and a released position. A second elastic element 38 is provided at the first shoulder 62 of the inner wall of the sliding sleeve 32, providing a reset thrust for the sliding sleeve 32. See attached diagram. Figure 4-5 A protruding ring 43 is provided on the inner front wall of the sliding sleeve 32. The protruding ring 43 is adjacent to the outer concave portion 51 and the inner concave portion 61. The protruding ring 43 is defined by the flared portion 71 of the second housing 31. Therefore, the sliding sleeve 32 will not fall off the second housing 31.

[0052] A push ring 36 is disposed between the second housing 31 and the sliding sleeve 32, and is axially movable. A third elastic element 39 is provided at the rear end of the push ring 36. The third elastic element 39 applies a thrust to the push ring 36 axially, causing the front end of the push ring 36 to press against the spherical locking member 33. When the sliding sleeve 32 is in the locked position, the front end of the push ring 36 always presses against the spherical locking member 33. Preferably, the front end face 66 of the push ring 36 is an inclined surface, and the front end face 66 exerts a downward force on the spherical locking member 33, preventing the spherical locking member 33 from wobbling in the oblong locking hole 50.

[0053] The male connector 100 also includes a valve core 12 disposed in the first inner cavity 28 of the first housing 11 and a first elastic member 13 for resetting the valve core 12. See Appendix Figure 1 Alternatively, valve core 12 includes a cylindrical valve core head 30 and a claw-shaped valve core tail 56. The valve core tail 56 is provided with three claws 57. Preferably, the valve core tail 56 has a tapered portion 65 in the middle. Valve core 12 is axially disposed in the first inner cavity 28 of the first housing 11, with its valve core head 30 facing the same direction as the insertion end 15 and its valve core tail 56 facing the same direction as the connecting portion 23.

[0054] A first elastic element 13 is disposed on the valve core tail 56 and is defined by a stop block 25. The stop block 25 is adjacent to a retaining ring 26, which is disposed in a slot 60, thereby holding the stop block 25 in the first inner cavity 28. One end of the first elastic element 13 abuts against a first step 58 at the end of a claw 57, and the other end abuts against the stop block 25. The first elastic element 13 axially pushes the abutting portion 59 on the claw 57 against the converging portion 14 of the first inner cavity 28. Preferably, the converging portion 14 further includes a first conical surface 29 tapered toward its first end face 24. A first annular groove 21 is provided on the outer circumference of the valve core head 30, and a first sealing element 22 is disposed in the groove, forming a seal between the valve core 12 and the first housing 11. The valve core 12 can move axially in the first inner cavity 28 and be driven to reset by the first elastic element 13, thereby selectively blocking or opening the first inner cavity 28.

[0055] The female connector 200 also includes a tail sleeve 34 connected to the second housing 31, a valve stem 35 disposed in the second inner cavity 70 of the second housing 31, and a valve core ring 37. See Appendix Figure 1 The tail sleeve 34 is cylindrical, with its front end connected to the adapter 73 of the second housing 31 and its rear end connected to a fluid pipeline. The front end of the tail sleeve 34 has a first shoulder 63 and a second shoulder 64, with an outwardly extending protrusion 75 between the first shoulder 63 and the second shoulder 64. The first shoulder 63 and the push ring 36 define a third elastic element 39. The protrusion 75 and the first shoulder 62 of the sliding sleeve 32 define a second elastic element 38, and the second shoulder 64 cooperates with the second shoulder 74 of the sliding sleeve 32 to define the release position of the sliding sleeve 32. The tail sleeve 34 can be integral with the second housing 31 or separate; for ease of installation and maintenance, a separate design is preferred. The adapter 73 of the second housing 31 is machined with an external thread, and the inner side of the front end of the tail sleeve 34 is provided with an internal thread that matches it. The tail sleeve 34 is threadedly connected to the adapter 73 of the second housing 31. A sealing element 67 is provided at the end of the thread of the tail sleeve 34. The sealing element 67 forms a seal between the second housing 31 and the tail sleeve 34 to prevent leakage.

[0056] The valve stem 35 includes a push top 77, a base 79, and a rod 78 connecting the push top 77 and the base 79. The base 79 has a circular multi-leg structure. The push top 77 and the rod 78 are located in the second inner cavity 70 of the second housing 31. The base 79 is located at the inner shoulder 81 of the tail sleeve 34 and is positioned and fixed by the end of the adapter 73 of the second housing 31. Preferably, the push top 77 is provided with a second conical surface 68, and the end of the rod 78 is provided with a third conical surface 69.

[0057] The valve core ring 37 includes a sealing portion 86 and a guide portion 87. The outer diameter of the sealing portion 86 is smaller than that of the guide portion 87. The sealing portion 86 and the guide portion 87 are connected by a tapered transition portion 88. See Appendix. Figure 1Alternatively, 14 and 15. The valve core ring 37 is disposed in the second inner cavity 70 of the second housing 31, with its sealing portion 86 located in the inner sealing section 76, its guide portion 87 located in the guide section 85, and its transition portion 88 abutting against the limiting section 84. The outer diameter of the sealing portion 86 is slightly smaller than the inner diameter of the inner sealing section 76, and the outer diameter of the guide portion 87 is also slightly smaller than the inner diameter of the guide section 85. Therefore, the valve core ring 37 can slide axially along the guide section 85 with the guide portion 87 as support. A second step 82 is provided at the rear end of the guide portion 87 of the valve core ring 37, and a fourth elastic element 41 is provided on the second step 82. The other end of the fourth elastic element 41 abuts against the base 79 of the valve stem 35. During the axial sliding of the valve core ring 37, the fourth elastic element 41 provides an axial reset thrust for the valve core ring 37. When the transition portion 88 of the valve core ring 37 abuts against the limiting section 84, the sealing portion 86 of the valve core ring 37 is precisely wrapped around the outer circumference of the push top 77 of the valve stem 35. Therefore, the valve core ring 37 can selectively block or open the second inner cavity 70.

[0058] In a preferred embodiment, the inner sealing section 76 of the second inner cavity 70 is further provided with a second annular groove 40, and the outer circumference of the valve stem 35 push top 77 is provided with a third annular groove 42. A second sealing element 46 is provided in the second annular groove 40, and a third sealing element 48 is provided in the third annular groove 42. The second sealing element 46 forms a seal between the second housing 31 and the valve core ring 37, and the third sealing element 48 forms a seal between the valve stem 35 and the valve core ring 37.

[0059] When male connector 100 is mated with female connector 200, see Appendix Figure 6 The insertion portion 15 of the first housing 11 of the male connector 100 enters the second inner cavity 70 of the second housing 31 of the female connector 200. The outer diameter of the insertion portion 15 is slightly smaller than the inner diameter of the inner sealing section 76, so the insertion portion 15 can be inserted smoothly. This continues until the first end face 24 of the insertion portion 15 contacts the second end face 52 of the valve core ring 37, and the first push surface 27 of the valve core 12 contacts the second push surface 53 of the valve stem 35.

[0060] Further pushing the male connector 100, the insertion portion 15 of the first housing 11 axially pushes the valve core ring 37 to the right, and the sealing portion 86 of the valve core ring 37 gradually moves away from the inner sealing section 76, compressing the fourth elastic element 41. Simultaneously, the valve stem 53 axially pushes the valve core 12 to the left, and the valve core 12 gradually moves away from the retracting portion 14, compressing the first elastic element 13. During this period, before the insertion portion 15 disengages from the valve core 12, it first forms a seal with the second sealing element 46 within the inner sealing section 76. Subsequently, the first sealing element 22 and the second sealing element 46 gradually disengage from the first housing 11 and the valve core ring 37. Conversely, when the male connector 100 and the female connector 200 are disconnected, the first sealing element 22 and the second sealing element 46 first form seals with the first housing 11 and the valve core ring 37 respectively, and the third sealing element 48 subsequently disengages. This achieves zero air trapping and zero overflow.

[0061] See appendix Figure 7-12 When the ball-shaped locking member 33 on the female connector 200 contacts the locking portion 16 on the male connector 100, as the male connector 100 is further inserted, the front conical surface 17 of the locking portion 16 applies an upward oblique thrust to the ball-shaped locking member 33. The ball-shaped locking member 33 axially pushes the push ring 36 to the right, and the push ring 36 compresses the third elastic member 39. When the locking portion 16 pushes the highest point of the ball-shaped locking member 33 past the lower thrust surface 45 of the inner convex ring 43 of the sleeve 32, the ball-shaped locking member 33 enters the inner recess 61 of the sleeve 32. At this time, the ball-shaped locking member 33 moves from the proximal position to the first distal position. As the male connector 100 continues to advance, the top of the front conical surface 17 of the locking part 16 passes the lowest point of the spherical locking member 33, and the spherical locking member 33 begins to contact the flat top surface 18. At this time, the flat top surface 18 of the locking part 16, the front end surface 66 of the push ring 36, and the rear thrust surface 49 of the protruding ring 43 of the ring sleeve 32 work together on the spherical locking member 33.

[0062] When the flat top surface 18 of the locking part 16 moves to the point where the tangent of the spherical locking member 33 overlaps with the rear conical surface 19 of the locking part 16, the spherical locking member 33 disengages from the flat top surface 18 of the locking part 16. See Appendix for details. Figure 11 The compressed third elastic element 39 pushes the push ring 36 to the left to reset, and the push ring 36 pushes the spherical locking element 33 to fall onto the rear conical surface 19 of the locking part 16. At the same time, the lower thrust surface 45 on the convex ring 43 of the sliding sleeve 32 and the push ring 36 work together on the spherical locking element 33 to lock it. At this time, the male connector 100 and the female connector 200 are connected.

[0063] The thrust portion 44 on the second inner cavity 70 of the second housing 31 can prevent the male connector 100 from being inserted to its limit. When the front conical surface 17 of the locking portion 16 on the first housing 11 abuts against the thrust portion 44, the male connector 100 has been inserted to its limit position. This can prevent the male connector 100 from being over-inserted and damaged due to improper operation or excessive force during the connection between the male connector 100 and the female connector 200.

[0064] When the male connector 100 and the female connector 200 are disconnected, simply slide the sleeve 32 to the right (backward) with one hand until the second shoulder 74 abuts against the second shoulder 64 of the tail sleeve 34, and participate in the attached... Figure 13 The convex ring 43 of the sliding sleeve 32 drives the push ring 36 to move to the right, and the spherical locking member 33 disengages from the force of the push ring 36 and the convex ring 43. Under the interaction of the first elastic member 13 and the fourth elastic member 41, the male connector 100 tends to disengage from the female connector 200. At this time, the male connector 100 withdraws to the left, and the locking part 16 pushes the spherical locking member 33 into the outer recess 51 of the sliding sleeve 32, and the spherical locking member 33 enters the second distal position. The front thrust surface 47 and the waist-shaped locking hole 50 of the sliding sleeve 32 work together on the spherical locking member 33. When the locking part 16 of the male connector 100 passes the spherical locking member 33, the male connector 100 and the female connector 200 immediately separate. During the separation, the first elastic member 13 and the fourth elastic member 41 respectively push the valve core 12 and the valve core ring 37 to reset. The valve core 12 and the first housing 11 form a seal again, and the valve core ring 37 and the second housing 31 and the valve stem 35 form a seal again. At the same time, the sliding sleeve 32 is reset under the action of the second elastic element 38, and the push ring 36, together with the ball-shaped locking element 33, is once again fixed in the proximal position of the waist-shaped locking hole 50.

[0065] One aspect of this invention is that after the male connector 100 and the female connector 200 are connected, the medium flow resistance is small, and the flow is smoother. See attached document. Figure 12 The valve core 12 has a tapered portion 65 at its rear end, a first tapered surface 29 on the first inner cavity 28 of the first housing 11, a second tapered surface 68 on the push top 77 of the valve stem 35, and a third tapered surface 69 at the end of the stem body 78. During media flow, the aforementioned tapered surfaces can effectively disperse the impact force of the media.

[0066] Before the male connector 100 and the female connector 200 are disconnected, the first inner cavity 28 and the second inner cavity 70 are filled with a medium. When disconnected, the medium in the inner cavity will hinder the reset speed of the valve core ring 37 to a certain extent. Preferably, the valve core ring 37 is provided with a balance hole 80, and multiple balance holes 80 can be provided, located on the transition part 88. See Appendix Figure 14-15 The balance hole 80 can balance the pressure difference in the inner cavity, making the valve core ring 37 reset more quickly. In another structure, the valve core ring 37 is provided with a balance groove 83, which is located on the outer circumference of the guide portion 87.

[0067] The basic principles and advantages of this utility model have been described above. For those skilled in the art, the above embodiments are merely illustrative of the technical solutions of this utility model and not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some or all of the technical features by reading this specification. Any obvious substitutions are within the protection scope of this utility model without departing from its concept.

Claims

1. A fluid connector for quick connection and disconnection, characterized in that: Includes a male connector (100) and a female connector (200) that mate with each other, wherein the male connector (100) includes: A first housing (11) extending along the axis, the first housing (11) having a smooth and continuous insertion portion (15) and a radially raised locking portion (16); The female connector (200) includes: A second housing (31) that receives the male connector (100) has a flared part (71) and a housing part (72). Symmetrically distributed waist-shaped locking holes (50) are provided at the connection between the flared part (71) and the housing part (72) in the circumferential direction. A sliding sleeve (32) is axially sleeved on the outer periphery of the second housing (31). The inner side of the sliding sleeve (32) is provided with a protruding ring (43). The sliding sleeve (32) can move axially between a locked position and a released position. An axially movable push ring (36) is disposed between the second housing (31) and the sliding sleeve (32); A spherical locking member (33) is movable within the waist-shaped locking hole (50), and the spherical locking member (33) is held in a proximal position by the action of the convex ring (43) and the push ring (36); And a second elastic element (38) and a third elastic element (39) respectively provide a restoring force to the sliding sleeve (32) and the push ring (36); When the male connector (100) is connected to the female connector (200), the locking part (16) on the first housing (11) pushes the spherical locking member (33) to the first distal position, and the spherical locking member (33) interlocks with the locking part (16); when the sliding sleeve (32) moves to the release position, the spherical locking member (33) moves radially upward to the second distal position, the spherical locking member (33) unlocks from the locking part (16), and the male connector (100) disconnects from the female connector (200).

2. The fluid connector for quick connection and disconnection according to claim 1, characterized in that: The convex ring (43) is adjacent to the outer concave portion (51) and the inner concave portion (61). When the spherical locking member (33) is placed in the inner concave portion (61), it is located at the first distal position, and when it is placed in the outer concave portion (51), it is located at the second distal position.

3. A quick-connect and disconnect fluid connector according to claim 2, characterized in that: The locking part (16) includes a front conical surface (17), a flat top surface (18), and a rear conical surface (19).

4. A quick-connect and disconnect fluid connector according to claim 3, characterized in that: The waist-shaped lock hole (50) includes a cylindrical hole (54) at the upper end and a tapered hole (55) at the lower end.

5. A quick-connect and disconnect fluid connector according to claim 4, characterized in that: The front end face (66) of the push ring (36) is an inclined surface.

6. A quick-connect and disconnect fluid connector according to claim 5, characterized in that: The male connector (100) also includes a valve core (12) disposed in the first inner cavity (28) of the first housing (11) and a first elastic element (13) for driving the valve core (12) to reset. Under the action of the first elastic element (13), the valve core (12) can selectively block or open the first inner cavity (28).

7. A quick-connect and disconnect fluid connector according to claim 6, characterized in that: The female connector (200) also includes a tail sleeve (34) connected to the second housing (31), a valve stem (35) disposed in the second inner cavity (70) of the second housing (31), and a valve core ring (37). The tail sleeve (34) defines the release position of the sliding sleeve (32), and the valve core ring (37) selectively blocks or opens the second inner cavity (70).

8. A quick-connect and disconnect fluid connector according to claim 7, characterized in that: The valve stem (35) includes a push top (77), a stem body (78), and a base (79), the base (79) being fixed to the tail sleeve (34) via the second housing (31).

9. A quick-connect and disconnect fluid connector according to claim 8, characterized in that: The second inner cavity (70) is provided with a thrust section (44) to limit the extreme insertion of the male connector (100), a smooth inner sealing section (76), and a limiting section (84) and a guide section (85) to limit and guide the axial movement of the valve core ring (37).

10. A quick-connect and disconnect fluid connector according to claim 9, characterized in that: The inner sealing section (76) is provided with a second sealing element (46), and the push top (77) is provided with a third sealing element (48).

11. A quick-connect and disconnect fluid connector according to claim 10, characterized in that: The valve core (12) is provided with a cone (65), the first inner cavity (28) is provided with a first cone surface (29), the push top (77) is provided with a second cone surface (68), and the rod body (78) is provided with a third cone surface (69). During the communication between the male connector (100) and the female connector (200), the cone (65), the first cone surface (29), the second cone surface (68) and the third cone surface (69) together disperse the impact force of the medium.

12. A quick-connect and disconnect fluid connector according to claim 11, characterized in that: The valve core ring (37) is provided with at least one balance hole (80), which is located on the transition part (88).

13. A quick-connect and disconnect fluid connector according to claim 11, characterized in that: The valve core ring (37) has a balance groove (83) on the outer circumference of the guide portion (87).

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