Fluid coupling

Abstract

The invention provides a fluid coupler. The fluid coupler comprises a body, a supporting part, a valve assembly, a switch piece and an interlocking mechanism. The body is provided with a butt joint platform. The supporting part is annularly arranged at the first end of the body, is adjacent to one side, back to the butt joint surface, of the butt joint platform, is provided with a first mounting surface and a second mounting surface, and is internally provided with a limiting cavity and a clamping bolt hole; and the limiting cavity axially penetrates through the second mounting surface and the butt joint surface and is communicated with the safety bolt hole. The clamping bolt hole is opened in the first mounting surface and is communicated with the limiting cavity; the valve assembly comprises a ball core which is provided with a channel and is pivoted in the body. The switch piece is arranged on the first installation face and comprises a handle and a spring bolt, the handle is provided with a pivot joint part and a limiting groove, and the ball core is driven to rotate through the upper valve body. The interlocking mechanism comprises a safety bolt, a spring and a clamping bolt. The safety plug is arranged in the limiting cavity, and the spring provides elastic force so that the safety plug can be maintained at the preset position. The clamping bolt is arranged in the clamping bolt hole and provided with a limiting part and a locking part which are matched with the limiting groove and the safety bolt ring groove respectively so as to control locking and unlocking of the handle.

Description

Technical Field

[0001] The invention relates to a fluid connector, in particular to a fluid connector with a ball valve structure. Background Art

[0002] Fluid connectors are used in pipeline systems for fluid transportation, mainly for quickly connecting or separating two sections of pipelines, while controlling the on-off state of the fluid. In traditional technology, the design of fluid connectors usually focuses on sealing performance and ease of operation, but in actual applications, there are still the following technical defects and limitations. For example, during the operation of existing fluid connectors, the valve may be opened without being fully docked due to accidental or improper operation, thereby causing the risk of fluid leakage. To prevent such accidents, some fluid connectors use a manual locking mechanism, but the operation is cumbersome and easily affected by user negligence, reducing the safety of the system. Furthermore, the design of traditional fluid connectors ignores the problem of preventing accidental separation when the valve is not closed. When the valve is in the open state, if the connector is accidentally separated, it is easy to cause fluid leakage or equipment damage.

[0003] See also Figure 1A and Figure 1B shown. Figure 1A It is a side view schematic diagram of a conventional valve connector. Figure 1B for Figure 1A Schematic diagram of the interlocking system of the valve coupling. Figure 1A and Figure 1B As shown, the prior art discloses a valve coupler, which has a mechanism to prevent the valve from opening when it is not properly docked and from being detached in an unclosed state. The mechanism to prevent the valve from opening when it is not properly docked mainly relies on the coordinated action of components such as the gear portion 11, the pin 12 and the roller 14. Specifically, when the valve coupler is in an undocking state, the pin 12 is biased by the spring and protrudes, thereby locking the roller 14, and the locked roller 14 limits the movement of the key pin 18, further preventing the valve from rotating from the closed position to the open position. The gear portion 11 is arranged between the handle 6 and the pin 12, and is responsible for converting the rotational movement of the handle 6 into the linear movement of the pin 12. In addition, the mechanism to prevent the valve from being detached in an unclosed state also relies on the structural cooperation of the gear portion 11, the pin 12 and the roller 14 to achieve, and through the coordinated action of multiple components, the safety of the valve coupler during operation is ensured. When the valve is in an open state, the pin 12 is pushed to the extended position by the actuator, and the pin 12 is inserted into the hole of the complementary valve coupler, thereby mechanically locking the two valve couplers to prevent them from rotating relative to each other or separating. To achieve the separation of the valve coupling, the valve coupling must first be rotated, and only after the valve is completely closed will the pin 12 be retracted into the hole, releasing the lock and allowing the valve coupling to be separated.

[0004] However, the valve connector has a complex structural design and is bulky. Furthermore, since the valve is located far away from the interface, water overflow is likely to occur when the connector is separated, affecting operational convenience and system cleanliness.

[0005] In view of this, how to solve the above problems and shortcomings is an urgent research direction. Summary of the invention

[0006] The object of the present invention is to provide a fluid connector, which has multiple anti-misoperation mechanisms. When the fluid connector is in an undocking state, the rear end of the main body of the safety bolt is maintained at a predetermined position that can resist the locking portion of the bolt by the elastic force of the spring and the limiting action of the limiting cavity, so that the limiting portion of the bolt and the limiting groove at the bottom of the handle are mutually engaged to achieve the locking of the switch member and prevent the valve from being accidentally opened when it is not properly docked. When the fluid connector is docked and positioned with another fluid connector, the cone portion of the safety bolt is aligned and embedded in the positioning hole of the other fluid connector, and the safety bolt moves to an unlocking position due to pressure. In the unlocking position, the locking portion of the bolt falls into the ring groove of the safety bolt due to being suspended in the air, and the limiting portion of the bolt is separated from the limiting groove of the handle, thereby releasing the lock on the switch member. In addition, after the fluid connector is docked and positioned with another fluid connector, when the switch member is rotated to the open position, one end of the lock tongue of the fluid connector will pass through the lock tongue groove on its docking platform and be inserted into the lock tongue receiving groove on the docking platform of the other fluid connector to engage with the other fluid connector. By means of the above mechanism, the valves of the two fluid connectors can be prevented from being opened before the docking and positioning state, and the two fluid connectors can be prevented from being detached when the valves are not closed after the two fluid connectors are docked and positioned.

[0007] The present invention provides a fluid connector, characterized in that it comprises:

[0008] A body, having a first end and a second end, a fluid passage extending between the first end and the second end, a docking platform provided at the first end of the body, the docking platform having a docking surface, an opening communicating with the fluid passage and at least one interlocking buckle and at least one buckle groove arranged circumferentially staggered around the opening, a safety bolt hole and a positioning hole provided on the periphery of the at least one interlocking buckle and the at least one buckle groove, a lock tongue through groove and a lock tongue receiving groove provided between the safety bolt hole and the positioning hole, the lock tongue through groove and the lock tongue receiving groove being arranged adjacent to each other;

[0009] A support portion is disposed around the first end of the body and is adjacent to the side of the docking platform facing away from the docking surface. The support portion has a first mounting surface and a second mounting surface. The first mounting surface is adjacent to the side of the docking platform facing away from the docking surface and is perpendicular to the docking surface of the docking platform. The second mounting surface is located on the side of the support portion facing away from the docking platform and is perpendicular to the first mounting surface. A limiting cavity and a bolt hole are provided in the support portion. The limiting cavity axially penetrates between the second mounting surface and the docking surface and is communicated with the safety bolt hole. The bolt hole opens to the first mounting surface and extends in a direction perpendicular to the first mounting surface and is communicated with the limiting cavity.

[0010] A valve assembly, comprising a ball core, an upper valve body and a lower valve stem, wherein the ball core is pivotally arranged in the inner space of the body through one end of the upper valve body and the lower valve stem, and the ball core is provided with a passage and can be driven to rotate by the upper valve body;

[0011] a switch member, arranged on the first mounting surface of the support portion, comprising a handle and a lock tongue, the handle being provided with a pivoting portion, the lock tongue being connected to the handle through the pivoting portion, the pivoting portion being provided with an axial hole, the bottom surface of the handle being provided with a limiting groove, the other end of the upper valve body being fixedly arranged in the axial hole, so that the ball core can be linked with the rotation of the switch member; and

[0012] An interlocking mechanism includes a safety bolt, a spring and a latch bolt. The safety bolt includes a main body, a front end column and a cone. The outer periphery of the main body is provided with a safety bolt ring groove. The main body is accommodated in the limiting cavity. The front end column is extended from the main body and inserted into the safety bolt hole. The outer diameter of the main body matches the inner diameter of the limiting cavity. The outer diameter of the front end column is smaller than the outer diameter of the main body and matches the inner diameter of the safety bolt hole. The cone is located at the front end of the safety bolt. The spring is accommodated in the limit cavity, with one end abutting against the bottom wall of the limit cavity and the other end abutting against the rear end of the safety bolt. The bolt is movably accommodated in the bolt hole along a direction perpendicular to the axis of the limit cavity. The bolt includes a limit portion and a locking portion. The limit portion is arranged at one end of the bolt and has a shape matching the limit groove of the handle. The locking portion is arranged at the other end of the bolt and has a shape matching the ring groove of the safety bolt.

[0013] The fluid connector further comprises a pipe member connected to the second end of the body and having a pipe channel which is communicated with the fluid channel.

[0014] The fluid connector described above, wherein the interlocking buckle includes a handle protruding from the docking platform and a docking portion connected to the handle and arranged perpendicular to the handle, the buckle groove includes a docking section and a clamping section, the docking section has an opening matching the shape of the docking section, the opening of the clamping section is retracted compared to the opening of the docking section, and when the docking section slides into the clamping section, the opening of the clamping section can limit the axial separation of the docking section.

[0015] In the fluid connector, the docking platform is provided with a pair of interlocking buckles of different sizes and a pair of buckle grooves of different sizes, and the size of each interlocking buckle matches the size of the docking section of its corresponding buckle groove.

[0016] The fluid connector described above, wherein the depth of the positioning hole matches the length of the tapered portion of the safety bolt.

[0017] The fluid connector described above, wherein a ball groove is further provided on the second mounting surface of the support portion, a button hole which runs transversely therethrough is further provided on the handle, and a ball through hole which is located on the lower side of the handle and is connected to the button hole, and the position of the ball through hole corresponds to the ball groove.

[0018] The fluid connector described above, wherein a button member which is laterally limited and capable of limited axial displacement is provided in the button hole, the button member comprises a pressing portion extending out of the button hole and a pressing core portion provided in the button hole, and a button ring groove is concavely provided on the outer periphery of the pressing core portion.

[0019] The fluid connector, wherein when the fluid connector is in an unmated state, the safety bolt is maintained at a predetermined position, at which the front end of the main body of the safety bolt is pushed by the action force of the spring to abut against the wall of the limiting cavity adjacent to the safety bolt hole, and the rear end of the main body of the safety bolt abuts against the locking portion of the clamping bolt, so that the limiting portion of the clamping bolt is engaged in the limiting groove of the handle to lock the switch member.

[0020] The fluid connector, wherein when the fluid connector and another fluid connector complete docking and positioning, the cone portion of the safety bolt is aligned with and embedded in the positioning hole on the docking platform of the other fluid connector to reach an unlocked position. In the unlocked position, the safety bolt moves further in the direction of compressing the spring compared to the preset position, so that the locking portion of the bolt is suspended in the air and falls into the ring groove of the safety bolt.

[0021] The fluid connector, wherein, after the fluid connector is docked and positioned with another fluid connector, when the switch member is rotated in one direction to rotate the ball core, the locking tongue will pass through the locking tongue groove in a direction opposite to the direction and be inserted into the locking tongue receiving groove of the other fluid connector, so that the fluid connector and the other fluid connector are mutually engaged.

[0022] The present invention, by means of the above technical solution, utilizes a pair of interlocking buckles and buckle grooves of different sizes arranged on the docking platform to ensure that the fluid connector can only be docked with another fluid connector in the correct docking direction, thereby achieving a foolproof function. In addition, by means of the coordinated action of the safety bolt, spring and clamp bolt in the interlocking mechanism, only when the fluid connector and another fluid connector are docked and positioned, the safety bolt is pressed and moved to an unlocking position where the locking portion of the clamp bolt is suspended and falls into the safety bolt ring groove, can the lock of the switch member be released, thereby effectively preventing the valve from being accidentally opened before the fluid connector is docked and positioned. Furthermore, the button member provided on the handle can serve as a second protection mechanism for the handle. When the button member is not triggered, the handle cannot rotate freely, thereby preventing the valve from being accidentally opened or closed due to external force or mis-touch. In addition, after the fluid connector is docked with another fluid connector, when the switch member rotates to an open position to open the valve, one end of the lock tongue will pass through the lock tongue through groove and be inserted into the lock tongue receiving groove of the other fluid connector to achieve mutual engagement. Thereby, after the two fluid connectors are docked and positioned, the connectors are prevented from being disassembled when the valves are not closed, thereby improving operational safety and system stability.

[0023] The above description of the content of the present invention and the following description of the embodiments are intended to demonstrate and explain the principles of the present invention and to provide further explanation of the scope of the claims of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A It is a side view schematic diagram of a conventional valve connector.

[0025] Figure 1B for Figure 1A Schematic diagram of the interlocking system of the valve coupling.

[0026] Figure 2A Schematic diagram of a fluid connector according to an embodiment of the present invention.

[0027] Figure 2B for Figure 2A The fluid coupling and the pipe fitting are shown in a three-dimensional schematic diagram in a separated state.

[0028] Figure 3 It is a schematic exploded view of the main components of the fluid connector according to an embodiment of the present invention.

[0029] Figure 4 It is a cross-sectional schematic diagram showing that a fluid connector according to an embodiment of the present invention and another fluid connector are in an unconnected state.

[0030] Figure 5 1 is a top view of the docking platform structure of the fluid connector according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram showing that the fluid connector according to an embodiment of the present invention is in an unmated state and the safety bolt is located at a preset position.

[0032] Figure 7 It is a cross-sectional schematic diagram showing a fluid connector according to an embodiment of the present invention and another fluid connector in a docking and positioning state.

[0033] Figure 8 This is a schematic diagram of the safety bolt being in the unlocked position after the fluid connector according to the embodiment of the present invention has completed docking and positioning.

[0034] Fig. 9 for Figure 7 The fluid coupling shown is a schematic cross-sectional view along section aa'.

[0035] Explanation of reference numerals: 1, 1A, 1B-fluid connector; 10-body; 100-fluid channel; 101-first end; 102-second end; 103-docking platform; 103S-docking surface; 1030-opening; 1031-interlocking buckle; 1031a-handle; 1031b-docking portion; 1032-buckle groove; 1032a-docking section; 1032b-clamping section; 1033-lock tongue through groove; 1034-lock tongue receiving groove; 1035-safety bolt hole; 1036-positioning hole; 1037-external lock through hole; 20-support portion; 201-limiting cavity 202-bolt hole; 203-ball groove; 30-pipe fitting; 301-pipe channel; 40-valve assembly; 401-ball core ;401P-channel;402-upper valve body;403-lower valve stem;50-switch member;501-handle;502-lock tongue;503-pivot portion;5030-axial hole;501G-limiting groove;5010-button hole;5011-ball through hole;5012-button member;5013-pressing portion;5014-pressing core;5015-button ring groove;5016-ball;60-interlocking mechanism;601-safety bolt;602-spring;603-bolt;6011-main body;6011G-safety bolt ring groove;6012-front end column;6013-conical portion;6031-limiting portion;6032-locking portion;P1-first mounting surface;P2-second mounting surface. DETAILED DESCRIPTION

[0036] See also Figure 2A , Figure 2B and Figure 3 The embodiment of the present invention provides a fluid connector 1, which can be used to quickly connect or separate two sections of pipelines and control the on-off state of the fluid. The fluid connector 1 includes a body 10, a support portion 20, a valve assembly 40, a switch member 50 and an interlocking mechanism 60.

[0037] The body 10 has a first end 101 and a second end 102, and a fluid channel 100 is formed between the first end 101 and the second end 102 for fluid conduction and transmission. The first end 101 of the body 10 is provided with a docking platform 103, and the docking platform 103 is used to dock with another fluid connector to achieve the communication of the fluid channels 100 of the two fluid connectors. The docking platform 103 is provided with a docking surface 103S, and the docking surface 103S is a structural plane for achieving docking of the fluid connectors.

[0038] The fluid connector 1 may further include a pipe fitting 30. The pipe fitting 30 is connected to the second end 102 of the body 10 and has a pipe passage 301. The pipe passage 301 is connected to the fluid passage 100 of the body 10. Specifically, the body 10 can be connected to the threaded structure of the pipe fitting 30 through the threaded structure of the second end 102 (not shown in the figure), so that the fluid passage 100 of the body 10 is connected to the pipe passage 301 of the pipe fitting 30.

[0039] See also Figure 4 , Figure 5 , Figure 8 The docking surface 103S of the docking platform 103 is provided with an opening 1030 communicating with the fluid channel 100 and at least one pair of interlocking buckles 1031 and at least one pair of buckle grooves 1032 arranged in a staggered manner in the circumferential direction around the opening 1030. The interlocking buckles 1031 and the buckle grooves 1032 form an interlocking structure during docking, so that the fluid connector can be firmly engaged during the docking process, preventing docking misalignment or loosening, and ensuring sealing and stability.

[0040] The interlock buckle 1031 includes a handle portion 1031 a extending axially and extending beyond the docking platform 103 , and a docking portion 1031 b connected to the handle portion 1031 a and disposed perpendicularly to the handle portion 1031 a .

[0041] The buckle groove 1032 has a docking section 1032a and a clamping section 1032b. The docking section 1032a is provided with an opening that matches the shape of the docking portion 1031b, which is used to guide the docking portion 1031b into the buckle groove 1032. The opening of the clamping section 1032b is retracted compared to the opening of the docking section 1032a, forming a restricted area. When the docking portion 1031b (not shown) of another fluid connector enters the docking section 1032a and rotates and slides to the clamping section 1032b, the retracted opening of the clamping section 1032b can effectively limit the axial movement of the docking portion 1031b, ensuring that the two fluid connectors are in a stable docking state and preventing axial disengagement.

[0042] Specifically, the docking platform 103 is provided with a pair of interlocking buckles 1031 of different sizes and a pair of buckle slots 1032 of different sizes. Figure 5As shown, the size of the interlock buckle 1031 on the left side is larger than the interlock buckle 1031 on the right side, while the size of the buckle slot 1032 on the upper side is smaller than the buckle slot 1032 on the lower side. In addition, the size of each interlock buckle 1031 matches the size of the docking section 1032a of its corresponding buckle slot 1032. Through the above design, it is ensured that the fluid connector can only be docked with another fluid connector in the correct docking direction, effectively achieving the foolproof function and avoiding incorrect assembly or unstable connection.

[0043] A safety bolt hole 1035 and a positioning hole 1036 are provided around the interlocking buckles 1031 and the buckle grooves 1032. The safety bolt hole 1035 is used to accommodate the front end cylinder 6012 of the safety bolt 601. The positioning hole 1036 is used to align with the cone portion 6013 of the safety bolt 601 on the docking platform of another fluid connector to ensure accurate positioning during docking.

[0044] A locking tongue through slot 1033 and a locking tongue receiving slot 1034 are also provided between the safety bolt hole 1035 and the positioning hole 1036. The locking tongue through slot 1033 and the locking tongue receiving slot 1034 are arranged adjacent to each other and are used to cooperate with the locking tongue structure in another fluid connector to realize the locking function during docking, thereby further improving the stability and safety of the fluid connector.

[0045] The docking platform 103 may also be additionally provided with an external locking through-hole 1037. When a fluid connector is docked with another fluid connector, the external locking through-holes 1037 of the two fluid connectors may overlap with each other, thereby allowing the use of an additional locking piece to simultaneously penetrate and fix the external locking through-holes 1037 of the two fluid connectors, so as to further enhance the stability of the docking.

[0046] Please refer to Figure 2A , Figure 2B As shown. The support portion 20 is disposed around the first end 101 of the body 10 and is adjacent to a side of the docking platform 103 facing away from the docking surface 103S, so as to strengthen the structural stability of the connection between the docking platform 103 and the body 10. The support portion 20 has a first mounting surface P1 and a second mounting surface P2, wherein the first mounting surface P1 is adjacent to a side of the docking platform 103 facing away from the docking surface 103S and is perpendicular to the docking surface 103S of the docking platform 103; the second mounting surface P2 is located on a side of the support portion 20 facing away from the docking platform 103 and is perpendicular to the first mounting surface P1.

[0047] See also Figure 3 , Figure 6As shown. A limiting cavity 201 and a bolt hole 202 are provided in the support portion 20. The limiting cavity 201 axially penetrates between the second mounting surface P2 and the docking surface 103S, and is connected to the safety bolt hole 1035. The bolt hole 202 opens at the first mounting surface P1, extends in a direction perpendicular to the first mounting surface P1, and is connected to the limiting cavity 201.

[0048] See also Figure 4 As shown, the valve assembly 40 includes a ball core 401, an upper valve body 402 and a lower valve stem 403. The ball core 401 is pivoted in the internal space of the body 10 through one end of the upper valve body 402 and the lower valve stem 403. The ball core 401 is provided with a channel 401P, and can be driven by the upper valve body 402 to rotate to a connected state or a blocked state. When the ball core 401 rotates to the connected state, the channel 401P is aligned with the fluid channel 100 and connected (not shown in the figure), allowing the fluid to pass; when the ball core 401 rotates to the blocked state, the channel 401P deviates from the position of the fluid channel 100, blocking the fluid from passing. In addition, through the configuration of various components in this embodiment, the ball core 401 is arranged close to the inner surface of the docking platform 103. After the two fluid connectors are docked, the space between the two valves is effectively reduced, thereby greatly reducing the amount of residual liquid between the connectors when the two fluid connectors are separated, improving the cleanliness of the system and improving the operating efficiency.

[0049] One end of the upper valve body 402 is disposed in the axial hole of the ball core 401 , and the other end of the upper valve body 402 is fixedly disposed in the axial hole 5030 on the switch member 50 , so that the ball core 401 can rotate synchronously with the rotation of the switch member 50 .

[0050] See also Figure 2A , Figure 3 , Figure 4 The switch element 50 is disposed on the first mounting surface P1 of the support portion 20 .

[0051] The switch member 50 includes a handle 501 and a locking tongue 502. The locking tongue 502 is disposed at an end opposite to the handle 501. The handle 501 is provided with a pivoting portion 503, and the pivoting portion 503 is penetrated with an axial hole 5030. The locking tongue 502 is connected to the handle 501 through the pivoting portion 503. When the handle 501 is rotated in one direction to rotate the ball core 401 so that the channel 401P of the ball core 401 is connected with the fluid channel 100, the locking tongue 502 will deflect in a direction opposite to the direction.

[0052] See also Figure 7 , Fig. 9As shown. In this embodiment, a ball groove 203 is provided on the first mounting surface P1 of the support portion. The handle 501 is provided with a button hole 5010 that passes through horizontally, and a ball through hole 5011 that is connected to the button hole 5010 and is located on the lower side of the handle 501. The ball through hole 5011 is arranged corresponding to the ball groove 203. A button member 5012 is arranged in the button hole 5010. The button member 5012 is laterally limited and can be axially displaced to a limited extent. The button member 5012 includes a pressing portion 5013 extending out of the button hole 5010 and a pressing core 5014 located in the button hole 5010. The pressing core 5014 is circumferentially recessed with a button ring groove 5015. A ball 5016 is placed in the ball hole 5011, and the depth of the ball hole 5011 is smaller than the diameter of the ball 5016, so that the ball 5016 partially protrudes from the lower side of the handle 501 and is embedded in the ball groove 203 to form a stable fit. In this embodiment, when the pressing portion 5013 is pressed by an external force, the button member 5012 moves axially, so that the button ring groove 5015 is aligned with the ball hole 5011, allowing the ball 5016 to retreat upward into the handle 501, thereby releasing the engagement between the ball 5016 and the ball groove 203, and achieving the purpose of unlocking.

[0053] In the embodiment of the present invention, a button is provided on the handle. When the button is not pressed, the handle is in a locked state and cannot rotate freely, thereby effectively preventing the valve from being accidentally opened or closed due to external force or mis-operation, thereby further improving the safety and reliability of the operation.

[0054] See also Figure 6 The interlocking mechanism 60 includes a safety bolt 601 , a spring 602 and a latch bolt 603 .

[0055] The safety bolt 601 includes a main body 6011, a front end column 6012 and a cone 6013. A safety bolt ring groove 6011G is provided on the outer periphery of the main body 6011. The main body 6011 is accommodated in the limiting cavity 201, and the front end column 6012 is formed by extending from the main body 6011 and can be inserted into the safety bolt hole 1035. The outer diameter of the main body 6011 matches the inner diameter of the limiting cavity 201, while the outer diameter of the front end column 6012 is smaller than the outer diameter of the main body 6011 and matches the inner diameter of the safety bolt hole 1035. The cone 6013 is located at the front end of the safety bolt 601 and can protrude outside the docking surface of the docking platform 103. In this embodiment, the inner diameter of the safety bolt hole 1035 is smaller than the inner diameter of the limiting cavity 201, the front end column 6012 of the safety bolt 601 cooperates with the safety bolt hole 1035, and the main body 6011 cooperates with the limiting cavity 201, ensuring that the main body 6011 of the safety bolt 601 is firmly clamped in the limiting cavity 201 to limit the safety bolt 601 from escaping axially.

[0056] The spring 602 is accommodated in the limiting cavity 201 , with one end of the spring abutting against the bottom wall of the limiting cavity 201 and the other end abutting against the rear end of the safety bolt 601 .

[0057] The latch 603 is movably accommodated in the latch hole 202 along a direction perpendicular to the axis of the limiting cavity 201. The latch 603 includes a limiting portion 6031 and a locking portion 6032. The limiting portion 6031 is located at one end of the latch 603 and has a shape that matches the limiting groove 501G of the handle 501, so that it can be engaged in the limiting groove 501G to limit the rotation of the handle 501. The locking portion 6032 is arranged at the other end of the latch 603 and has a shape that matches the safety bolt ring groove 6011G. When the safety bolt 601 moves to a specific position, the locking portion 6032 can be embedded in or out of the safety bolt ring groove 6011G.

[0058] When the fluid connector 1A is not docked with another fluid connector 1B, the safety bolt 601 is maintained at a predetermined position. At the predetermined position, the front end of the main body 6011 of the safety bolt 601 is pushed by the elastic force of the spring 602 to abut against the wall of the limit cavity 201 adjacent to the safety bolt hole 1035, and the rear end of the main body 6011 of the safety bolt 601 abuts against the locking portion 6032 of the latch 603, so that the limit portion 6031 of the latch 603 is engaged in the limit groove 501G of the handle 501 to lock the switch.

[0059] like Figure 6 As shown, the locking portion 6032 of the latch 603 is latched at the position on the left side of the safety bolt ring groove 6011G. However, the present invention is not limited to this, and the locking portion 6032 of the latch 603 can also be configured to be latched at other positions of the main body 6011 of the safety bolt 601, such as the position on the right side of the safety bolt ring groove 6011G. The specific configuration can be adjusted according to actual application requirements, depending on the length of the safety bolt 601 and the setting position of the safety bolt ring groove 6011G, etc., to adapt to different structural requirements.

[0060] See also Figure 5 , Figure 8 When the interlocking buckles 1031 on the docking platforms 103 of the fluid connector 1A and the other fluid connector 1B are correctly embedded in the docking sections 1032a of the corresponding buckle grooves 1032, and the two fluid connectors are rotated in opposite directions to a predetermined angle (for example, each fluid connector is rotated 90 degrees counterclockwise), and the docking positioning is completed, the cone portion 6013 of the safety bolt 601 of the fluid connector 1A will be aligned with the positioning hole 1036 on the docking platform 103 of the other fluid connector 1B and embedded therein, thereby reaching the unlocked position.

[0061] In the unlocked position, the safety bolt 601 moves further toward the direction of the compression spring 602 compared to the aforementioned preset position, causing the locking portion 6032 of the bolt 603 to be suspended in the air and fall into the safety bolt ring groove 6011G, and causing the limiting portion 6031 of the bolt 603 to disengage from the limiting groove 501G of the handle 501, thereby releasing the locking state of the handle 501.

[0062] like Figure 8 As shown, after receiving the pressure of the docking surface 103S of the docking platform 103 of the other fluid connector 1B, the safety bolt 601 moves in the direction of the compression spring 602, and when docking and positioning, the position of the safety bolt 601 accurately reaches the unlocking position. It should be particularly noted that in this embodiment, the depth of the positioning hole 1036 matches the length of the cone portion 6013 of the safety bolt 601, and can only accommodate the cone portion 6013. Therefore, during the docking process, the cone portion 6013 of the safety bolt 601 of one fluid connector will first be pushed into the limiting cavity 201 of the fluid connector by the docking platform of the other fluid connector, and when the docking and positioning is completed, the cone portion 6013 of the safety bolt 601 of the fluid connector is aligned and, under the thrust of the spring 602, slightly pops out from the limiting cavity 201 and embeds into the positioning hole 1036 on the docking platform of the other fluid connector 1B. At this time, the safety bolt 601 accurately reaches the unlocking position, so that the locking portion 6032 of the bolt 603 smoothly falls into the safety bolt ring groove 6011G, and the limiting portion 6031 of the bolt 603 is separated from the limiting groove 501G, thereby unlocking the handle 501.

[0063] Please refer to Figure 7 As shown. Continuing with the previous embodiment, when the fluid connector 1A and the other fluid connector 1B are docked and positioned, and the handles 501 of the two fluid connectors are rotated in one direction to connect the two fluid channels 100, the fluid channels 100 of the two fluid connectors are connected, and the locking tongues 502 of each fluid connector will pass through the locking tongue grooves 1033 on their respective docking platforms 103 in opposite directions and insert into the locking tongue receiving grooves 1034 of the other fluid connector, thereby achieving mutual engagement of the two fluid connectors. This design effectively prevents the detachment operation from being performed when the docking positioning is completed and the valve is not closed, thereby improving the safety and stability of the operation.

[0064] The present invention ensures that the fluid connector can only be docked with another fluid connector in the correct docking direction by arranging a pair of interlocking buckles and buckle grooves of different sizes on the docking platform, thereby realizing the foolproof function. At the same time, the safety bolt, spring, bolt and limit cavity in the interlocking mechanism work together. Only when the fluid connector completes docking and positioning, the safety bolt is pressed and moved, and the locking part of the bolt is suspended and falls into the safety bolt ring groove, can the lock of the switch member be released to prevent the valve from accidentally opening before the docking is completed. In addition, the button member arranged on the handle serves as a second safety protection mechanism. When the button member is not pressed, the handle is in a locked state and cannot rotate, thereby preventing the valve from accidentally opening or closing due to external force or mis-touch. In addition, when the two fluid connectors are docked and the valve is opened, the lock tongue will pass through the lock tongue through groove on the docking platform and be inserted into the lock tongue receiving groove of the other fluid connector to achieve mutual engagement, thereby preventing the detachment operation from being performed without closing the valve, thereby further improving the operational safety and system stability. The interlocking mechanism is mainly composed of a safety bolt, a spring and a bolt, which simplifies the design, does not require the use of components such as gears, and helps to reduce the volume of components. In addition, by optimizing the configuration of each component, the ball core can fit closely to the inner surface of the docking platform, effectively reducing the amount of water overflow when the fluid connector is separated, and improving the cleanliness and efficiency of the system.

[0065] The above is a detailed description of the present invention, and the above is only a preferred embodiment of the present invention, which should not be used to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the present invention should still fall within the scope of the patent of the present invention.

Claims

1. A fluid connector, characterized in that: include: A body, having a first end and a second end, a fluid passage extending between the first end and the second end, a docking platform provided at the first end of the body, the docking platform having a docking surface, an opening communicating with the fluid passage and at least one interlocking buckle and at least one buckle groove arranged circumferentially staggered around the opening, a safety bolt hole and a positioning hole provided on the periphery of the at least one interlocking buckle and the at least one buckle groove, a lock tongue through groove and a lock tongue receiving groove provided between the safety bolt hole and the positioning hole, the lock tongue through groove and the lock tongue receiving groove being arranged adjacent to each other; A support portion is disposed around the first end of the body and is adjacent to the side of the docking platform facing away from the docking surface. The support portion has a first mounting surface and a second mounting surface. The first mounting surface is adjacent to the side of the docking platform facing away from the docking surface and is perpendicular to the docking surface of the docking platform. The second mounting surface is located on the side of the support portion facing away from the docking platform and is perpendicular to the first mounting surface. A limiting cavity and a bolt hole are provided in the support portion. The limiting cavity axially penetrates between the second mounting surface and the docking surface and is communicated with the safety bolt hole. The bolt hole opens to the first mounting surface and extends in a direction perpendicular to the first mounting surface and is communicated with the limiting cavity. A valve assembly, comprising a ball core, an upper valve body and a lower valve stem, wherein the ball core is pivotally arranged in the inner space of the body through one end of the upper valve body and the lower valve stem, and the ball core is provided with a passage and can be driven to rotate by the upper valve body; a switch member, arranged on the first mounting surface of the support portion, comprising a handle and a lock tongue, the handle being provided with a pivoting portion, the lock tongue being connected to the handle through the pivoting portion, the pivoting portion being provided with an axial hole, the bottom surface of the handle being provided with a limiting groove, the other end of the upper valve body being fixedly arranged in the axial hole, so that the ball core can be linked with the rotation of the switch member; and An interlocking mechanism includes a safety bolt, a spring and a latch bolt. The safety bolt includes a main body, a front end column and a cone. The outer periphery of the main body is provided with a safety bolt ring groove. The main body is accommodated in the limiting cavity. The front end column is extended from the main body and inserted into the safety bolt hole. The outer diameter of the main body matches the inner diameter of the limiting cavity. The outer diameter of the front end column is smaller than the outer diameter of the main body and matches the inner diameter of the safety bolt hole. The cone is located at the front end of the safety bolt. The spring is accommodated in the limit cavity, with one end abutting against the bottom wall of the limit cavity and the other end abutting against the rear end of the safety bolt. The bolt is movably accommodated in the bolt hole along a direction perpendicular to the axis of the limit cavity. The bolt includes a limit portion and a locking portion. The limit portion is arranged at one end of the bolt and has a shape matching the limit groove of the handle. The locking portion is arranged at the other end of the bolt and has a shape matching the ring groove of the safety bolt.

2. The fluid coupling according to claim 1, characterized in that: The invention also comprises a pipe member, which is connected to the second end of the body and has a pipe channel, and the pipe channel is communicated with the fluid channel.

3. The fluid coupling according to claim 1, characterized in that: The interlocking buckle includes a handle protruding from the docking platform and a docking portion connected to the handle and arranged perpendicular to the handle. The buckle groove includes a docking section and a clamping section. The docking section has an opening that matches the shape of the docking section. The opening of the clamping section is retracted compared to the opening of the docking section. When the docking section slides into the clamping section, the opening of the clamping section can limit the axial separation of the docking section.

4. The fluid coupling according to claim 1, characterized in that: The docking platform is provided with a pair of interlocking buckles of different sizes and a pair of buckle slots of different sizes, and the size of each interlocking buckle matches the size of the docking section of the corresponding buckle slot.

5. The fluid coupling according to claim 1, characterized in that: The depth of the positioning hole matches the length of the cone portion of the safety bolt.

6. The fluid coupling according to claim 1, wherein: A ball groove is also provided on the second mounting surface of the support part, a button hole which runs horizontally through the handle is also provided, and a ball through hole which is located on the lower side of the handle and is connected to the button hole, and the position of the ball through hole corresponds to the ball groove.

7. The fluid coupling according to claim 6, characterized in that: A button component which is laterally limited and can be axially displaced to a limited extent is arranged in the button hole. The button component comprises a pressing portion extending out of the button hole and a pressing core portion arranged in the button hole. A button ring groove is concavely arranged on the outer periphery of the pressing core portion.

8. The fluid coupling according to claim 1, wherein: When the fluid connector is in an undocking state, the safety bolt is maintained at a predetermined position, in which the front end of the main body of the safety bolt is pushed by the action force of the spring to abut against the wall of the limiting cavity adjacent to the safety bolt hole, and the rear end of the main body of the safety bolt abuts against the locking portion of the clamping bolt, so that the limiting portion of the clamping bolt is engaged in the limiting groove of the handle to lock the switch member.

9. The fluid coupling according to claim 8, wherein: When the fluid connector and the other fluid connector are docked and positioned, the cone portion of the safety bolt is aligned with and embedded in the positioning hole on the docking platform of the other fluid connector to reach an unlocked position. In the unlocked position, the safety bolt moves further in the direction of compressing the spring compared to the preset position, so that the locking portion of the bolt is suspended in the air and falls into the ring groove of the safety bolt.

10. The fluid coupling according to claim 9, wherein: After the fluid connector is docked and positioned with another fluid connector, when the switch member is rotated in one direction to rotate the ball core, the locking tongue will pass through the locking tongue groove in a direction opposite to the direction and be inserted into the locking tongue receiving groove of the other fluid connector, so that the fluid connector and the other fluid connector are engaged with each other.

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