Fluid connector

Abstract

A fluid connector comprises a shell with a fluid channel, a ball valve contained in the shell and provided with a through hole, an operating component installed outside the shell to control the ball valve to rotate, and a pin component. The operating component controls the ball valve to enable the ball valve to rotate between a closing position for blocking the fluid channel and an opening position for opening the fluid channel, when the ball valve is located at the closing position, the through hole is not communicated with the fluid channel, when the ball valve is located at the opening position, the through hole is communicated with the fluid channel, and when the ball valve is located at the opening position, the through hole is communicated with the fluid channel. A containing hole and a locking hole are formed in the front end of the shell, the pin component and an elastic component supporting the pin component are arranged in the containing hole, and a detection assembly which can move along with butt joint rotation of the fluid connector and an adaptive end connector so as to control the pin component to stretch out and retract back is arranged at the front end of the shell. The locking hole is internally provided with a stop component which can move to close the locking hole and open the locking hole, and when the pin component is in a retraction state that the pin component does not stretch out of the detection assembly, the pin component prevents the operation component from controlling the ball valve to be opened. And when the pin component is in an extending state of extending out of the detection assembly, the pin component releases the locking of the operating component so that the operating component can control the opening of the ball valve. The fluid connector is simple in structure, and reliable butt joint between the fluid connector and the adapter end connector can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a fluid connector, in particular to a simple structure and easy to manufacture fluid connector with anti-misoperation function.

BACKGROUND

[0002] The prior art refers to Chinese patent No. CN102459985B, which discloses a fluid connector comprising a housing, a ball valve accommodated in the housing, a handle mounted outside the housing to control the rotation of the ball valve, a detection pin provided on the housing and protruding from the front end surface of the housing in normal state, and a locking pin matched with the cooperation hole of the adapter connector. The handle can drive the locking pin to protrude from the front end surface of the housing, and the detection pin can control whether the locking pin and the handle can be linked through the locking member. However, the fluid connector has many elements and a complex structure.

[0003] Therefore, it is necessary to improve the existing fluid connector.

SUMMARY

[0004] The present application aims to provide a fluid connector with anti-misoperation function, which has a simple structure and reliable performance.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a fluid connector comprising a housing with a fluid passage, a ball valve with a through hole accommodated in the housing, an operating member mounted outside the housing to control the rotation of the ball valve, and a pin member, the operating member controls the ball valve to rotate between a closed position to block the fluid passage and an open position to open the fluid passage, when the ball valve is in the closed position, the through hole is not communicated with the fluid passage, when the ball valve is in the open position, the through hole is communicated with the fluid passage, the front end of the housing is provided with a receiving hole and a locking hole, the receiving hole is provided with the pin member and an elastic member supporting the pin member, the front end of the housing is provided with a detection assembly capable of being displaced relative to the housing to control the pin member to protrude and retract, the locking hole is provided with a stop member capable of moving to close the locking hole and open the locking hole, when the pin member is in the retracted state, the pin member prevents the operating member from controlling the opening of the ball valve, when the pin member is in the protruding state of the detection assembly, the pin member releases the locking of the operating member to enable the operating member to control the opening of the ball valve.

[0006] Further, the stop member can open and close the locking hole with the rotating operation of the operating member.

[0007] Further, the stop member includes a stop pin extending rearward out of the locking hole and supported by the operation member, and a spring supported in the locking hole to allow the stop pin to close the locking hole when the ball valve is in a closed state, as the operation member rotates to operate the ball valve to open, the stop pin is retracted rearward to allow the locking hole to open.

[0008] Further, the stop pin includes a stop portion sleeved in the spring and a base portion at a rear end of the stop portion for supporting a rear end of the spring, the locking hole includes a first hole at a front end and a second hole at a rear end of the first hole and having a larger diameter than the first hole, a step portion is formed between the first hole and the second hole for supporting a front end of the spring, and the base portion is supported by the operation member.

[0009] Further, the operation member is a handle connected to the ball valve by a columnar body to rotate the ball valve, the operation member includes a base body rotating about the columnar body and a handle extending from the base body to be pressed to rotate the base body, a rear end of the stop pin is supported by the base body to switch positions between closing the locking hole and opening the locking hole as the base body rotates, the base body has a first supporting position and a second supporting position on a periphery thereof for supporting the stop pin, a distance between the first supporting position and the columnar body is greater than a distance between the second supporting position and the columnar body, when the ball valve is in a closed state, the rear end of the stop pin is supported by the first supporting position of the base body to close the locking hole, and when the operation member rotates to operate the ball valve to open, the rear end of the stop pin is supported by the second supporting position of the base body to open the locking hole with the stop pin moving rearward.

[0010] Further, a front end surface of the housing is concavely formed with a sliding groove to accommodate the detection assembly and allow the detection assembly to slide circumferentially, the accommodating hole is arranged in the sliding groove, when the fluid connector is not connected to the adapter connector, the detection assembly is located at a first position to stop the pin member from extending out of the front end surface of the housing, when the fluid connector is connected to the adapter connector and rotated to a locked position, the detection assembly is driven by the adapter connector to a second position, and at this time, the pin member moves forward and extends out of the front end surface of the housing.

[0011] Further, the detection assembly includes a sliding block arranged in the sliding groove and an elastic element supported by the sliding block to allow the sliding block to be in the first position in a normal state, a front end of the sliding block and a front end of the adapter connector are provided with a mutual matching structure to allow the sliding block to be moved to the second position when the fluid connector and the adapter connector are connected and rotated.

[0012] Further, the slider is concave from the rear end to the front end, so that the slider forms a thick portion and a thin portion, the rear end of the thin portion is located forwardly compared to the rear end of the thick portion, the thick portion and the thin portion are penetrated by the through holes, the pin member includes a main body portion and a lock pin portion which is formed forwardly from the main body portion and has a smaller size than the main body portion, when the slider is located at the first position, the main body portion abuts against the rear end of the thick portion, at this time, the lock pin portion is located in the through hole of the thick portion, when the slider is moved to the second position, the main body portion moves forwardly and abuts against the rear end of the thin portion, at this time, the lock pin portion protrudes forwardly from the through hole of the thin portion.

[0013] Further, the pin member further includes an extension portion which is formed rearwardly from the main body portion and has a smaller size than the main body portion, the receiving hole includes a first receiving hole which receives the main body portion and a second receiving hole which receives the extension portion and has a smaller size than the first receiving hole, a first boss is formed between the main body portion and the extension portion, a second boss is formed between the first receiving hole and the second receiving hole, the elastic member is annularly arranged outside the extension portion, one end of the elastic member is supported on the first boss and the other end is supported on the second boss, the operation member is protrudingly provided with a protruding portion, the housing is provided with a guide slot which allows the protruding portion to protrude into the guide slot and to be dislodged when the operation member is rotated, the guide slot is communicated with the second receiving hole, when the pin member is in the retracted state of not protruding from the detection assembly, the extension portion protrudes from the second receiving hole into the guide slot to prevent the operation member from being rotated to control the opening of the ball valve, when the pin member is in the protruding state of protruding from the detection assembly, the extension portion is disengaged from the guide slot to release the locking of the operation member, so that the operation member can be rotated to control the opening of the ball valve.

[0014] Further, the thick portion and the thin portion are provided with a guide slope which guides the base portion at the abutting position, the mutual matching structure is a protruding block and a recess which are matched with each other.

[0015] Further, the operation member includes a base connected to the ball valve through the columnar body and a handle extending from the base for pressing to operate the base to rotate, the handle protrudes to form a protrusion on the side of the housing, the protrusion can rotate with the handle as the handle is pressed, when the pin member is in the retracted state of not extending out of the detection assembly, the rear end of the pin member extends into the rotation path of the protrusion so that the handle cannot be pressed to operate, at this time, the pin member prevents the operation member from operating the ball valve to open, when the pin member is in the extended state of extending out of the detection assembly, the rear end of the pin member is out of the rotation path of the protrusion so that the handle can be pressed to operate, at this time, the pin member contacts the locking of the operation member to enable the operation member to operate the ball valve to open.

[0016] Further, the fluid connector and the adapter connector have the same structure, the adapter connector also includes a housing with a fluid channel, a receiving hole provided in the housing, a pin member and an elastic member provided in the receiving hole, a detection assembly for controlling the extension and retraction of the pin member, a locking hole provided in the housing, a stop member provided in the locking hole and capable of moving to close and open the locking hole, a ball valve provided in the housing, and an operation member mounted outside the housing to operate the ball valve to rotate, when the fluid connector is not connected with the adapter connector, the detection assembly of the fluid connector and the detection assembly of the adapter connector are both in the first position, at this time, the pin member of the fluid connector and the pin member of the adapter connector are in the retracted state of retracting the respective detection assemblies, and the rear end of the pin member blocks the operation member from operating the ball valve to open, the detection assembly of the fluid connector and the housing of the adapter connector are provided with matching structures, the detection assembly of the adapter connector and the housing of the fluid connector are also provided with matching structures, when the fluid connector abuts against the adapter connector, the matching structures of the detection assembly of the fluid connector and the housing of the adapter connector are connected, and the matching structures of the detection assembly of the adapter connector and the housing of the fluid connector are connected, with the rotation of the fluid connector and the adapter connector after abutting against each other, the detection assembly of the fluid connector and the detection assembly of the adapter connector are driven by the housing of the other party to the second position, at this time, the detection assembly of the fluid connector and the detection assembly of the adapter connector allow the respective pin members to extend out of the respective detection assemblies, as the operation member of the fluid connector and the adapter connector is operated to rotate to open the ball valve, the stop members of the fluid connector and the adapter connector retract to open the locking hole for the pin member of the other party to extend out of the detection assembly.

[0017] Compared with the prior art, the pin member in the fluid connector of the present application is controlled to retract and extend by a detection assembly. When the fluid connector is not connected with the mating end connector, the detection assembly limits the pin member so that the pin member is in the retracted state. When the fluid connector is abutted with the mating end connector and the fluid connector is rotated relative to the mating end connector, the detection assembly is moved to enable the pin member to extend out of the detection assembly. The operation member of the mating end connector is rotated to open the locking hole, and the pin member can extend into the locking hole to realize the locking between the connectors. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the fluid connector of the present application and the mating end connector not connected.

[0019] Figure 2 is a perspective view of the fluid connector of the present application and the mating end connector connected.

[0020] Figure 3 is a perspective view of the operation member of the fluid connector of the present application in the unopened state.

[0021] Figure 4 is a top view of Figure 3

[0022] Figure 5 is a perspective view of the operation member of the fluid connector of the present application in the opened state.

[0023] Figure 6 is a top view of Figure 5

[0024] Figure 7 is a perspective exploded view of the fluid connector of the present application.

[0025] Figure 8 is another perspective exploded view of Figure 7

[0026] Figure 9 is a sectional view along the line A-A of Figure 4

[0027] Figure 10 is a sectional view along the line B-B of Figure 4

[0028] Figure 11 is a sectional view of the fluid connector of the present application abutted with the mating end connector and connected in place.

[0029] Figure 12 is a sectional view along the line C-C of Figure 6

[0030] Figure 13 is​​​​​​Figure 6 A sectional view along the line D-D.

[0031] Figure 14 is a sectional view of the fluid connector of the present application after being mated with the mating end connector.

[0032] Figure 15 is another sectional view of the fluid connector of the present application after being mated with the mating end connector.

DETAILED DESCRIPTION

[0033] For better understanding of the object, structure, features and effects of the present application, the present application will be further described in conjunction with the drawings and specific embodiments.

[0034] Please refer to Figures 1 to 15 , the present application discloses a fluid connector 100, which is used to mate with a mating end connector 500 to make the fluid passage between the two connectors communicate. The fluid connector 100 comprises a housing 1 having a fluid passage 10, a ball valve 2 provided with a through hole 20 and received in the housing 1, an operating member 3 mounted outside the housing 1 and connected to the ball valve 2 to control the rotation of the ball valve, a pin member 4 and a detection assembly 5 for controlling the extension and retraction of the pin member 4. The operating member 3 controls the ball valve 2, so that the ball valve 2 can rotate between a closed position for blocking the fluid passage 10 and an open position for opening the fluid passage 10. When the pin member 4 is in the retracted state, the pin member 4 prevents the rotation of the operating member 3, so that the operating member 3 cannot control the opening of the ball valve 2. When the pin member 4 is in the extended state of extending the detection assembly 5, the pin member 4 releases the locking of the operating member 3, so that the operating member 3 can rotate to control the opening of the ball valve 2.

[0035] Please refer to Figure 3 , Figure 4 , Figure 9 and Figure 10 , when the operating member 3 is not rotated, the through hole 20 of the ball valve 2 does not communicate with the fluid passage 10, at this time, the ball valve 2 is in the closed position for blocking the fluid passage 10. Please refer to Figure 5 , Figure 6 , Figure 12 and Figure 13As shown, when the operating member 3 is rotated, the through hole 20 of the ball valve 2 is communicated with the fluid channel 10, at this time, the ball valve 2 is in the open position of opening the fluid channel 10. In the present application, the operating member 3 is connected and fixed to the ball valve 2 through a columnar body 201, so that the rotation of the operating member 3 can drive the rotation of the ball valve 2. The ball valve 2 is provided with a pivoting member 202 fitted in the shell 1 on the other side corresponding to the columnar body 201, the pivoting member 202 includes a pivoting part 2021 fixed to one end of the ball valve 2 and pivotably fitted to the other end of the shell 1, and a spring 2022 provided in the pivoting part 2021 and supported on the shell 1, the spring 2022 can make the ball valve 2 pivot stably.

[0036] The front end of the shell 1 is provided with a containing hole 101 and a locking hole 102, the containing hole 101 is provided with the pin member 4 and the elastic member 40 supporting the pin member 4, the locking hole 102 is provided with the stop member 6 capable of moving to close and open the locking hole 102. The front end of the shell 1 is provided with the detection assembly 5 capable of controlling the pin member 4 to extend and retract, the stop member 6 can open and close the locking hole 102 with the rotation operation of the operating member 3. The structure of the adapter end connector 500 and the fluid connector 100 is the same, the adapter end connector 500 includes a shell 7 with a fluid channel, a containing hole 701 provided in the shell 7, a pin member 702 and an elastic member 703 provided in the containing hole 701, a detection assembly 704 provided at the front end of the shell 7 to control the pin member 702 to extend and retract, a locking hole 705 provided in the shell 7, a stop member 706 provided in the locking hole 705 and capable of moving to close and open the locking hole 705, a ball valve 707 provided in the shell 7, and an operating member 708 mounted outside the shell to control the rotation of the ball valve 707.

[0037] The stop member 6 includes a stop pin 61 extending rearward from the locking hole 102 and supported by the operation member 3, and a spring 62 supported in the locking hole 102 to allow the stop pin 61 to close the locking hole 102 when the ball valve 2 is in a closed state. As the operation member 3 rotates to operate the opening of the ball valve 2, the stop pin 61 is retracted rearward to allow the locking hole 102 to open. Specifically, the stop pin 61 includes a stop portion 611 sleeved in the spring 62, and a base portion 612 at a rear end of the stop portion 611 supported by the spring 62, the base portion 612 being supported by the operation member 3. The locking hole 102 includes a first hole 1021 at a front end, and a second hole 1022 at a rear end of the first hole 1021 and having a larger diameter than the first hole 1021, a step portion 1023 being formed between the first hole 1021 and the second hole 1022 to support a front end of the spring 62. The operation member 3 is a handle, which includes a base body 31 rotating about the columnar body 201, and a handle 32 extending from the base body 31 to be pressed to operate the rotation of the base body 31, the base portion 612 at the rear end of the stop pin 61 being supported by the base body 31 to switch the position of the stop pin 61 between closing the locking hole 102 and opening the locking hole 102 as the base body 31 rotates. The base body 31 has a first support position P1 and a second support position P2 on a circumferential side to support the base portion 612, a distance D1 between the first support position P1 and the columnar body 201 being greater than a distance D2 between the second support position P2 and the columnar body 201, the base portion 612 of the stop pin 61 being supported by the first support position P1 of the base body 31 to close the locking hole 102 when the ball valve 2 is in a closed state, and the base portion 612 of the stop pin being supported by the second support position P2 of the base body 31 to open the locking hole 102 as the operation member 3 rotates to operate the opening of the ball valve 2, and the stop pin 61 moves rearward to lower the position.

[0038] When the fluid connector 100 is mated with and rotated with the mating connector 500, the detection assembly 5 of the fluid connector 100 is displaced relative to the housing 1 along with the rotation of the connector, thereby controlling the pin member 4 to extend and retract the detection assembly 5, in the process, the detection assembly 704 of the mating connector 500 is also displaced relative to its housing 7 to control its pin member 702 to extend and retract the detection assembly 704. In the present application, the front end face 11 of the housing 1 of the fluid connector 100 is recessed to form a sliding groove 103 in which the detection assembly 5 is accommodated and can slide circumferentially, and the accommodating hole 101 is arranged at the bottom of the sliding groove 103. When the fluid connector 100 is not mated with the mating connector 500, the detection assembly 5 is located at a first position in the sliding groove 103, at which time the detection assembly 5 restricts the pin member 4 to extend out of the front end face 11 of the housing 1. When the fluid connector 100 is mated with and rotated to a locked position with the mating connector 500, the detection assembly 5 is driven by the mating connector 500 to a second position of the sliding groove 103, at which time the pin member 4 moves forward and extends out of the front end face 11 of the housing 1. Similarly, the detection assembly 704 of the mating connector 500 can also be driven by the fluid connector 100 from a first position to a second position, so that the pin member 702 can extend forward out of the front end face of the housing 7 through the detection assembly 704.

[0039] The detection assembly 5 comprises a sliding block 51 arranged in the sliding groove 103 and an elastic element 52 supported on the sliding block 51 to enable the sliding block 51 to be at a first position in the sliding groove 103 in a normal state where the fluid connector 100 is not mated with the mating connector 500, the front end of the sliding block 51 and the front end of the mating connector 500 are provided with a mutual matching structure 8 that enables the sliding block to compress the elastic element 52 and move to a second position when the fluid connector 100 is mated and rotated with the mating connector 500, the surface of the sliding block 51 protrudes to form a protruding block 510, and the front end face of the housing 7 of the mating connector 500 is recessed to form a recess 71, the protruding block 510 and the recess 71 cooperate to form the mutual matching structure. It should be noted that the mutual matching structure 8 can also be a recess arranged on the sliding block and a protruding block arranged on the housing 7, or other structures that can drive the sliding block to move after mutual rotation. Similarly, the mutual matching structure 9 is arranged between the detection assembly 704 of the mating connector 500 and the housing 1 of the fluid connector 100, the detection assembly 704 is provided with a protruding block 7041 and the housing 1 is provided with a recess 110 for the insertion of the protruding block 7041, which will not be described here.

[0040] The slider 51 is concave from back to front to form a thick portion 511 and a thin portion 512, the thin portion 512 is flush with the front end of the thick portion 511, the rear end of the thin portion 512 is arranged forward compared with the thick portion 511, the thick portion 511 and the thin portion 512 are provided with openings 5111, 5121 which communicate with each other through the slider 51. The pin member 4 includes a main body portion 41 and a lock pin portion 42 which is formed by extending forward from the main body portion 41 and has a smaller size than the main body portion 41. When the slider 51 is located at the first position, the main body portion 41 abuts against the rear end of the thick portion 511, at this time the lock pin portion 42 is located in the opening 5111 and does not protrude forward from the front end surface 11 of the shell 1. When the slider 51 moves to the second position, the main body portion 41 moves forward and abuts against the rear end of the thin portion 512, at this time the lock pin portion 42 protrudes forward from the opening 5121 of the thin portion 512 and protrudes out of the front end surface 11 of the shell 1. In the present application, the opening 5111 is a long strip-shaped hole and the opening 5121 is a circular hole with a larger diameter than the opening 5111. The thick portion 511 and the thin portion 512 are provided with a guide inclined surface 513 at the abutting position, which is used for guiding the pin member 4 when the slider 51 switches between the first position and the second position. The pin member 4 further includes an extension portion 43 which is formed by extending rearward from the main body portion 41 and has a smaller size than the main body portion 41, the accommodating hole 101 includes a first accommodating hole 1011 which accommodates the main body portion 41 and a second accommodating hole 1012 which has a smaller size than the first accommodating hole 1011 and accommodates the extension portion 43, a first boss 44 is formed between the main body portion 41 and the extension portion 43, a second boss 1013 is formed between the first accommodating hole 1011 and the second accommodating hole 1012, the elastic member 40 is annularly arranged outside the extension portion 43, one end of the elastic member 40 is supported on the first boss 44 and the other end is supported on the second boss 1013.

[0041] The handle 32 of the operating member 3 is provided with a protrusion 321 on the side facing the housing 1, which protrusion 321 can rotate with the handle 32 when the handle 32 is pressed. The housing 1 is provided with a guide slot 104 for the protrusion 321 to extend into and to allow the protrusion 321 to move aside when the operating member 3 rotates. The guide slot 104 is in communication with the second receiving hole 1012 of the receiving hole 101. When the pin member 4 is in the retracted state of not extending out of the detection assembly 5, the extension 43 of the pin member 4 extends into the guide slot 104 from the second receiving hole 1012 and blocks the rotation path of the protrusion 321, so that the handle 32 cannot be pressed and operated, and the operating member 3 cannot rotate to control the ball valve 2 to open. When the pin member 4 is in the extended state of extending out of the detection assembly 5, the extension 43 is disengaged from the guide slot 104 and the operating member 3 is unlocked, i.e. the extension 43 disengages from the blocking of the protrusion 321, so that the handle 32 can be pressed and operated, and the operating member 3 can rotate to control the ball valve 2 to open.

[0042] In combination Figure 14 And Figure 15As shown, the following will describe how the fluid connector 100 and the mating end connector 500 cooperate. When the fluid connector 100 is not mated with the mating end connector 500, the detection assembly 5 of the fluid connector 100 and the detection assembly 704 of the mating end connector 500 are both in the first position. In the case of the fluid connector 100, the pin member 4 is at the thick portion 511 of the detection assembly 5, so that the pin member 702 is in the retracted state of not extending out of the respective detection assembly 5. The lower end of the pin member 4 in the retracted state blocks the protruding portion 321 of the operating member 3, so that the operating member 3 cannot control the ball valve 2 to open. Similarly, the pin member 702 of the mating end connector 500 is also in the retracted state of not extending out of the detection assembly 704, so as to prevent the operating member 708 from opening the ball valve 707. Since the detection assembly 5 of the fluid connector 100 and the housing 7 of the mating end connector 500 are provided with the matching structure of protrusions and grooves, and the detection assembly 704 of the mating end connector 500 and the housing 1 of the fluid connector 100 are also provided with the matching structure of protrusions and grooves, when the fluid connector 100 abuts against the mating end connector 500, the protrusion 510 of the detection assembly 5 of the fluid connector 100 mates with the groove 71 of the housing 7 of the mating end connector 500, and the protrusion 7041 of the detection assembly 704 of the mating end connector 500 mates with the groove 110 of the housing 1 of the fluid connector 100. With the rotation of the fluid connector 100 and the mating end connector 500 after abutting against each other, the detection assembly 5 of the fluid connector 100 and the detection assembly 704 of the mating end connector 500 are driven by the housing of the other to the second position. In the case of the fluid connector 100, the thin portion 512 of the detection assembly 5 corresponds to the pin member 4, so as to allow the pin member 4 to extend out of the front end face 11 of the housing 1. With the forward movement of the pin member 4, the pin member 4 releases the blocking of the protruding portion 321 of the operating member 3, so that the operating member 3 can be rotated to control the opening of the ball valve 2. With the rotation of the operating member 3 to open the ball valve 2, the second support position of the operating member 3 moves to the stop pin 61 of the stop member 6, so that the stop pin is retracted backward to open the locking hole 102. Similarly, the pin member 702 of the mating end connector 500 also releases the locking of the operating member 708 after performing the same operation, and the rotation of the operating member 708 causes the stop member 706 to retract to open the locking hole 705. After the locking holes of the fluid connector 100 and the mating end connector 500 are opened by the rotation of the operating members, the pin member 4 of the fluid connector 100 extends into the locking hole 705 of the mating end connector 500, and the pin member 702 of the mating end connector 500 extends into the locking hole 102 of the fluid connector 100, so as to realize the double interlocking function between the two, effectively eliminating the leakage.

[0043] The above merely provides the preferred embodiment of the present application, and should not be used to limit the scope of the present application. Any simple equivalent variation and modification made according to the claims of the present application and the contents of the present application should still fall within the scope of the present application.

Claims

1. A fluid connector, comprising a housing having a fluid passage, a ball valve with a through hole housed within the housing, an operating member mounted outside the housing for controlling rotation of the ball valve, and a pin member, wherein the operating member controls the ball valve to rotate between a closed position blocking the fluid passage and an open position opening the fluid passage, wherein when the ball valve is in the closed position, the through hole is not in communication with the fluid passage, and when the ball valve is in the open position, the through hole is in communication with the fluid passage, characterized in that: The front end of the housing is provided with a receiving hole and a locking hole. The receiving hole is provided with the pin member and an elastic member supporting the pin member. The front end of the housing is provided with a detection component that can move relative to the housing as the fluid connector rotates with the mating of the adapter connector to control the extension and retraction of the pin member. The locking hole is provided with a stop member that can move to close and open the locking hole. When the pin member is in the retracted state, the pin member prevents the operating member from controlling the opening of the ball valve. When the pin member is in the extended state with the detection component extended, the pin member releases the locking of the operating member so that the operating member can control the opening of the ball valve.

2. The fluid connector as described in claim 1, characterized in that: The stop member can open and close the locking hole as the operating member rotates.

3. The fluid connector as described in claim 1, characterized in that: The stop member includes a stop pin extending rearward out of the locking hole and supported on the operating member, and a spring supported in the locking hole so that the stop pin closes the locking hole when the ball valve is in the closed state. As the operating member rotates to operate the opening of the ball valve, the stop pin retracts rearward to open the locking hole.

4. The fluid connector as described in claim 3, characterized in that: The stop pin includes a stop portion sleeved inside the spring and a base portion located at the rear end of the stop portion for supporting the rear end of the spring. The locking hole includes a first hole located at the front end and a second hole located at the rear end of the first hole with a diameter larger than the first hole. A stepped portion is formed between the first hole and the second hole for supporting the front end of the spring. The base portion is supported by the operating member.

5. The fluid connector as described in claim 3, characterized in that: The operating component is a handle connected to the ball valve via a columnar body, which drives the ball valve to rotate. The operating component includes a base rotating around the columnar body and a handle extending from the base for pressing to control the rotation of the base. The rear end of a stop pin is supported on the base so that the stop pin switches between a closed locking hole and an open locking hole as the base rotates. The periphery of the base has a first support position and a second support position for the stop pin to support it. The distance between the first support position and the columnar body is greater than the distance between the second support position and the columnar body. When the ball valve is closed, the rear end of the stop pin is supported on the first support position of the base so that the stop pin closes the locking hole. When the operating component rotates to control the ball valve to open, the rear end of the stop pin is supported on the second support position of the base and moves backward along with the locked stop pin to open the locking hole.

6. The fluid connector as claimed in claim 1, characterized in that: The front end face of the housing is recessed to form a groove that accommodates the detection component and allows the detection component to slide circumferentially. The receiving hole is disposed in the groove. When the fluid connector is not mated with the adapter connector, the detection component is located in a first position and prevents the pin member from extending out of the front end face of the housing. When the fluid connector is mated with the adapter connector and rotated to the locked position, the detection component is driven to a second position by the adapter connector. At this time, the pin member moves forward and extends out of the front end face of the housing.

7. The fluid connector as claimed in claim 6, characterized in that: The detection component includes a slider and an elastic element disposed in the groove. The elastic element supports the slider so that the slider is normally in a first position. The front end of the slider and the front end of the adapter connector are provided with a mating structure that cooperates with each other so that when the fluid connector and the adapter connector are mated and rotated, the slider can be driven to move to a second position.

8. The fluid connector as claimed in claim 7, characterized in that: The slider is recessed forward from its rear end to form a thick part and a thin part. The rear end of the thin part is positioned forward relative to the rear end of the thick part. The thick part and the thin part pass forward through the slider to form an opening that communicates with each other. The pin member includes a main body and a locking pin portion extending forward from the main body, which is smaller than the main body. When the slider is in the first position, the main body abuts against the rear end of the thick part, and the locking pin portion is located in the opening of the thick part. When the slider moves to the second position, the main body moves forward and abuts against the rear end of the thin part, and the locking pin portion extends forward from the opening of the thin part out of the slider.

9. The fluid connector as claimed in claim 8, characterized in that: The pin member further includes an extension portion extending rearward from the main body portion, the extension portion being smaller than the main body portion. The receiving hole includes a first receiving hole for receiving the main body portion and a second receiving hole smaller than the first receiving hole for receiving the extension portion. A first boss is formed between the main body portion and the extension portion, and a second boss is formed between the first receiving hole and the second receiving hole. An elastic member is arranged around the extension portion, one end of the elastic member is supported on the first boss and the other end is supported on the second boss. The operating member has a protruding portion. The housing has a guide groove for the protruding portion to extend into and for the protruding portion to be displaced when the operating member rotates. The guide groove communicates with the second receiving hole. When the pin member is in a retracted state without extending from the detection component, the extension portion extends from the second receiving hole into the guide groove to prevent the operating member from rotating to control the opening of the ball valve. When the pin member is in an extended state with the detection component extended out, the extension portion disengages from the guide groove and releases the locking of the operating member, thereby allowing the operating member to rotate to control the opening of the ball valve.

10. The fluid connector as claimed in claim 8, characterized in that: The thick portion and the thin portion are provided with a guide slope at the adjacent junction to guide the pin member, and the mating structure consists of mutually cooperating protrusions and grooves.

11. The fluid connector as claimed in claim 1, characterized in that: The operating component includes a base connected to the ball valve via a columnar body and a handle extending from the base for pressing to rotate the base. A protrusion extends from the side of the handle facing the housing, and the protrusion rotates with the handle when pressed. When the pin component is in the retracted state (not extended from the detection component), the rear end of the pin component extends into the rotation path of the protrusion, preventing the handle from being pressed. In this state, the pin component prevents the operating component from opening the ball valve. When the pin component is in the extended state (extended from the detection component), the rear end of the pin component disengages from the rotation path of the protrusion, allowing the handle to be pressed. In this state, the pin component engages a locking mechanism with the operating component, enabling the operating component to open the ball valve.

12. The fluid connector as claimed in claim 2, characterized in that: The fluid connector and the adapter connector have the same structure. The adapter connector also includes a housing with a fluid channel, a receiving hole in the housing, a pin member and an elastic member in the receiving hole, a detection component for controlling the extension and retraction of the pin member, a locking hole in the housing, a stop member in the locking hole that can move to close and open the locking hole, a ball valve in the housing, and an operating component installed outside the housing to control the rotation of the ball valve. When the fluid connector is not mated with the adapter connector, the detection components of both the fluid connector and the adapter connector are in the first position. At this time, the pin member of the fluid connector and the pin member of the adapter connector are in the retracted state of their respective detection components, and the rear end of the pin member blocks the operating component from controlling the opening of the ball valve. The body is equipped with a mating structure, and the detection component of the adapter connector and the housing of the fluid connector are also equipped with a mating structure. When the fluid connector abuts against the adapter connector, the mating structure of the fluid connector's detection component and the housing of the adapter connector mates, and the mating structure of the adapter connector's detection component and the housing of the fluid connector mates. With the rotation after the fluid connector and the adapter connector abut, the detection components of the fluid connector and the adapter connector are driven to the second position by the other's housing. At this time, the detection components of the fluid connector and the adapter connector allow their respective pin components to extend out of their respective detection components. As the operating components of the fluid connector and the adapter connector rotate to open the ball valve, the stop components of the fluid connector and the adapter connector will retract to open the locking hole so that the other's pin component can extend out from the detection component and enter.

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