Fluid coupling

Abstract

The invention relates to the technical field of fluid connecting devices, in particular to a fluid connecting piece which comprises a connecting component, a limiting assembly and an operating mechanism. A mounting cavity is formed in the connecting component; the limiting assembly is movably accommodated in the mounting cavity; the limiting assembly comprises a limiting pin, a switch pin and a locking piece, the switch pin and the limiting pin are movably arranged relatively, and the locking piece is movably connected to the limiting pin; the operating mechanism is in transmission connection with the limiting pin; wherein the switch pin can move between a first position and a second position, and when the switch pin is in the first position, the locking piece is locked to the limiting pin and the connecting component; in the second position, the locking piece releases the limiting pin and the connecting component, and the operating mechanism can drive the limiting pin to move relative to the connecting component. According to the fluid connecting piece in the embodiment, the combination mode of the connecting component and the limiting assembly is improved, the problem that in the prior art, a locking pin of a connecting piece is insufficient in strength is effectively solved, and therefore the safer and more reliable connecting effect is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of fluid connection devices, and in particular to a fluid connection piece. Background Art

[0002] With the continuous advancement of technology, various types of fluid transmission systems have been widely used in daily production and life. As an important component to ensure the safe and efficient delivery of fluids, the design of connectors usually involves the assembly of multiple parts. In the prior art, the combination of fluid connectors usually adopts a rotary connection, so it is necessary to set a limit structure between the two butt connectors to achieve the rotation limit function after connection.

[0003] In order to realize the locking function of the limiting structure, most of the connectors in the prior art adopt a multi-hole (three holes or more) structure, which is arranged and matched with the locking rod and the push rod on the body, and a locking steel ball is set between the connected holes to realize the locking and unlocking functions. This design assembles multiple pins in a limited space to achieve the locking effect. However, in order to avoid the body volume being too large and to ensure the function of multiple holes, the aperture is usually set smaller, which leads to a corresponding reduction in the diameter of each pin in the body, thereby affecting the strength of the pin. This structure with insufficient strength can easily cause the locking pin to break or fail in a high-pressure fluid transmission environment, thereby causing potential safety hazards, and even causing fluid leakage and equipment damage. Especially in a high-pressure process transmission environment, the pin body is prone to breakage, causing the connector to fail.

[0004] Therefore, it is necessary to make improvements to the above problems in order to change the current situation. Summary of the invention

[0005] The present application provides a fluid connector, which is used to solve the problem in the prior art that the connector has a smaller aperture of multiple holes in order to ensure the limiting function of the limiting structure, thereby causing the strength of the connector to decrease.

[0006] A first aspect of the present application provides a fluid coupling, wherein a flow channel for conveying fluid is provided inside the coupling, and the coupling comprises:

[0007] A connecting member is provided with a mounting cavity spaced apart from the flow channel;

[0008] a limit assembly, movably accommodated in the installation cavity; the limit assembly comprises a limit pin, a switch pin and a locking member, the switch pin is movably arranged relative to the limit pin, and the locking member is movably connected to the limit pin; and

[0009] An operating mechanism, transmission-connected to the limit pin;

[0010] Wherein, the switch pin can move between a first position and a second position. When in the first position, the locking member is locked and connected with the limit pin and the connecting member; when in the second position, the locking member releases the limit pin and the connecting member, and the operating mechanism can drive the limit pin to move relative to the connecting member.

[0011] In one possible implementation, the connecting member is further provided with a locking groove spaced apart from the mounting cavity; when in the second position, the operating mechanism can drive the limit pin to be inserted into the locking groove of another group of the connecting members.

[0012] In a possible implementation, the connecting member is further provided with an abutment portion, and the abutment portion is located in the locking groove. When the two groups of the connecting members are connected, the abutment portion abuts against the switch pin to move the switch pin to the second position.

[0013] In one possible implementation, the outer diameter of the switch pin is a, the inner diameter of the locking groove is b, the outer diameter of the abutment portion is c, and a, b and c satisfy the following relationship: a>(bc) / 2.

[0014] In one possible implementation, when the two groups of the connecting members are docked and the mounting cavity is connected to the locking groove, the limit pin in one group of the connecting members can be sleeved on the abutment portion in the other group of the connecting members.

[0015] In one possible implementation, the distance between the outer wall of the limit pin in one group of the connecting parts and the inner wall of the locking groove in another group of the connecting parts is G1, the distance between the inner wall of the limit pin in one group of the connecting parts and the outer wall of the abutment portion in another group of the connecting parts is G2, and G2>G1.

[0016] In one possible implementation, the locking groove and the mounting cavity are arranged at intervals along the circumference of the connecting member.

[0017] In a possible implementation, a smooth structure is provided at one end of the switch pin facing the outside of the installation cavity.

[0018] In a possible implementation, the connecting member has a connecting surface, and when two groups of the connecting members are connected, the two connecting surfaces are arranged opposite to each other, and the locking groove and the opening of the installation cavity are both located on the connecting surface.

[0019] In one possible implementation, the connecting member is provided with an output port connected to the mounting cavity, and when the switch pin is located at the second position, the limit pin can extend from the output port; when the switch pin moves from the second position to the first position, the switch pin extends from the output port.

[0020] In a possible implementation, the limit pin is sleeved on the outer side of the switch pin and is slidably arranged relative to the switch pin.

[0021] In a possible implementation, the inner wall of the installation cavity is provided with a locking groove, the limit pin is provided with a movable cavity and a connecting hole that are connected to each other, the switch pin can be movably accommodated in the movable cavity, and the locking member is movably connected to the connecting hole;

[0022] When in the first position, the locking member is simultaneously engaged with the connecting hole and the locking groove; when in the second position, the locking member can be separated from the locking groove.

[0023] In one possible implementation, a movable groove is provided on the outer wall of the switch pin; when in the first position, the switch pin abuts against the locking member so that the locking member is simultaneously engaged with the connecting hole and the locking groove, and when in the second position, the locking member is at least partially accommodated in the movable groove and can be separated from the locking groove.

[0024] In one possible implementation, the movable groove includes a first groove portion and a second groove portion that are connected, the depth of the first groove portion is smaller than that of the second groove portion, and when in the first position, the locking member is respectively accommodated in the first groove portion, the connecting hole and the locking groove, and when in the second position, the locking member is respectively accommodated in the second groove portion and the connecting hole.

[0025] In a possible implementation, the first groove portion and the second groove portion are connected to form a step surface, and the step surface can abut against the locking member in the second position.

[0026] In one possible implementation, the limit pin is also provided with a first stop groove, which is connected to the movable cavity; the switch pin is provided with a second stop groove; the limit assembly also includes a stop member, which is detachably connected to the connecting member, and the stop member is at least partially inserted into the first stop groove and the second stop groove in sequence.

[0027] In a possible implementation, the locking member is a sphere or a cylinder, and the locking member is slidably matched with the connecting hole.

[0028] In one possible implementation, the outer wall of the limit pin is provided with a plurality of drive teeth arranged in sequence along its axial direction, the operating mechanism is provided with a plurality of drive tooth grooves, the operating mechanism is movably connected to the connecting member, and the drive teeth are transmission-connected to the drive tooth grooves.

[0029] In one possible implementation, the limit assembly also includes an elastic member, which is accommodated in the installation cavity, and the elastic member is respectively connected to the switch pin and the connecting member, and the elastic member is used to drive the switch pin to move from the second position toward the first position.

[0030] In a possible implementation, the switch pin is provided with a fixing portion, one end of the elastic member is sleeved on the fixing portion, and the other end of the elastic member abuts against an end surface of the installation cavity.

[0031] In one possible implementation, the operating mechanism includes an operating handle and a positioning assembly, the operating handle is rotatably connected to the connecting member, and the operating handle is transmission-connected to the limit pin, and the positioning assembly is movably connected to the operating handle; the outer wall of the connecting member is provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged in sequence along the rotation direction of the operating handle, and the positioning assembly is used to respectively engage with the positioning grooves.

[0032] In a possible implementation, the operating handle is provided with a communicating accommodation cavity and a movable hole;

[0033] The positioning assembly includes a handle unlocking member and a handle positioning member, the handle positioning member is movably connected to the movable hole, an unlocking groove is provided on the outer wall of the handle unlocking member, and the handle unlocking member is slidably connected to the accommodating cavity and can move between a third position and a fourth position; in the third position, the handle positioning member is respectively accommodated in the movable hole and the positioning groove, and in the fourth position, the handle positioning member is respectively accommodated in the movable hole and the unlocking groove.

[0034] In one possible implementation, the positioning assembly also includes a handle reset member, which is accommodated in the accommodating cavity and is respectively connected to the handle unlocking member and the operating handle, and the handle reset member is used to drive the handle unlocking member to move from the fourth position toward the third position.

[0035] In one possible implementation, the operating handle is further provided with a mounting hole connected to the accommodating cavity, and the positioning assembly also includes a handle blocking member, which is detachably connected to the mounting hole, and the handle reset member is respectively abutted against the handle unlocking member and the handle blocking member.

[0036] In one possible implementation, a valve core cavity connected to the flow channel is opened inside the connecting component, and the connecting component also includes a valve core assembly, which can be movably accommodated in the valve core cavity. The valve core assembly is connected to the operating mechanism, and the operating mechanism is used to drive the valve core assembly to move between closing or opening the flow channel.

[0037] In one possible implementation, the valve core assembly includes a valve core body and a valve core main shaft structure, the valve core body is rotatably connected to the connecting member via the valve core main shaft structure, and the operating mechanism is connected to the valve core main shaft structure and is used to drive the valve core body to rotate relative to the connecting member.

[0038] In a possible implementation, the connecting member is further provided with a first hole and a second hole respectively connected to the valve core cavity, and the first hole and the second hole are coaxially arranged;

[0039] The valve core main shaft structure includes a valve core drive shaft and a valve core plug. The valve core drive shaft is inserted into the first hole and is respectively connected to the operating mechanism and the valve core body. The valve core plug is detachably connected to the second hole and is rotatably connected to the valve core body.

[0040] In a possible implementation, the valve core main shaft structure further includes a drive sealing ring, which is sleeved on the valve core drive shaft and sealed between the valve core drive shaft and the first hole.

[0041] In one possible implementation, the valve core assembly further includes a valve core sealing seat, which is connected to the flow channel and is sealed between an inner wall of the valve core cavity and an outer wall of the valve core body.

[0042] In one possible implementation, the valve core assembly also includes a valve core sealing ring, a valve core sealing groove is formed on the side of the valve core sealing seat away from the valve core body, and the valve core sealing ring is accommodated in the valve core sealing groove and sealed between the valve core sealing seat and the valve core cavity.

[0043] In one possible implementation, the connecting component includes a body and a connecting portion, the installation cavity and the valve core cavity are both arranged on the body, the connecting portion is detachably connected to the body and is passed through the body, the connecting portion and the body are combined to form the valve core cavity, and the connecting portion is used to connect to an external pipeline.

[0044] In a possible implementation, the connecting member further includes a valve seat sealing ring, which is sleeved on the connecting portion and sealed between the connecting portion and the body.

[0045] In a possible implementation, a mounting notch is formed through the exterior of the body, and the connecting member further comprises a valve seat retaining spring, which is accommodated in the mounting notch and is engaged with the connecting portion.

[0046] In one possible implementation, the connecting component includes a valve body structure and a docking structure that are connected to each other, the installation cavity is provided on the valve body structure, and the operating mechanism is movably connected to the valve body structure; the docking structure is provided on a side of the opening facing the installation cavity, and the two groups of the connecting members are plug-connected via the docking structure.

[0047] In one possible implementation, the valve body structure is provided with a seat body, and the flow channel is arranged in the seat body, and the docking structure is arranged around the seat body; the connecting component also includes a sealing gasket, which is arranged on the seat body and is used to seal between the two seat bodies when the two groups of the connecting components are docked.

[0048] In a possible implementation, the seat body is provided with a docking sealing groove, the docking sealing groove is located on the outer side of the seat body, and the sealing gasket is at least partially engaged in the docking sealing groove.

[0049] In a possible implementation, the connecting member further includes a sealing sleeve, which is disposed on the outside of the valve body structure, and is used to seal between the two valve body structures when the two groups of the connecting members are butt-jointed.

[0050] In a possible implementation, the docking structure includes an avoidance groove, a locking groove and a plurality of buckles, the plurality of buckles are arranged at intervals along the circumferential direction of the opening of the flow channel, and at least one of the buckles is arranged at intervals with the valve body structure to form the locking groove, and the avoidance groove is communicated with the locking groove;

[0051] When the two groups of connecting members are butted against each other, at least one of the buckles is accommodated in the avoidance groove and moves into the locking groove when the two groups of connecting members rotate relative to each other.

[0052] In a possible implementation, the buckle includes a first buckle and a second buckle, the first buckle surrounds the opening of the flow channel and protrudes outward, the second buckle is arranged on the outside of the first buckle, and the end surface of the second buckle is flush with the plane where the opening of the installation cavity is located, the second buckle is spaced from the valve body structure to form the locking groove, and the avoidance groove is arranged on one side of the second buckle along the circumferential direction of the flow channel;

[0053] When the two groups of the connecting pieces are butted against each other, the first buckle of one group of the connecting pieces is snap-fitted with the second buckle of the other group of the connecting pieces.

[0054] Implementing the embodiments of the present application has the following beneficial effects:

[0055] The fluid connector in this embodiment improves the combination of the connecting member and the limiting assembly, effectively solving the problem of insufficient strength of the locking pin of the connecting member in the prior art, thereby achieving a safer and more reliable connection effect.

[0056] Specifically, the connection piece of this embodiment arranges the limit pin, the switch pin and the locking piece in the limit assembly together in the installation cavity, so that the switch pin can move between the first position and the second position, thereby realizing the locking and releasing of the limit pin by the locking piece. This design enables the limit pin to connect to another set of connection pieces, thereby providing a limit function for both.

[0057] Compared with the existing connectors, the connector of this embodiment can realize the linkage function of the limit assembly without additionally setting holes for accommodating the switch pin. Due to the optimization of the number of holes, the connector of this embodiment can increase the diameter of the installation cavity, thereby increasing the size of the limit pin and the switch pin, improving the overall strength of the limit assembly, enhancing the working stability of the connector under high pressure conditions, and ensuring the compactness of the overall structure of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 A three-dimensional view of a fluid coupling member in an embodiment of the present invention is shown;

[0060] Figure 2 A top view of a fluid coupling member in an embodiment of the present invention is shown;

[0061] Figure 3 Shows Figure 2 Sectional view along line AA;

[0062] Figure 4 Shows Figure 2 A schematic cross-sectional view of the fluid coupling member along line AA when the fluid coupling member is in the second position;

[0063] Figure 5 Shows Figure 2 Sectional view along line BB;

[0064] Figure 6 Shows Figure 2Sectional view along line CC;

[0065] Figure 7 Shows Figure 2 Sectional view along line DD;

[0066] Figure 8 Shows Figure 2 Sectional view along line EE;

[0067] Fig. 9 A schematic structural diagram showing a fluid coupling member docking state in an embodiment of the present invention;

[0068] Fig.10 It shows a cross-sectional schematic diagram of the internal structure of the fluid coupling member in the docking state in an embodiment of the present invention;

[0069] Fig.11 A partial cross-sectional schematic diagram showing a docking state of a fluid coupling member in an embodiment of the present invention is shown;

[0070] Fig.12 A partial cross-sectional schematic diagram of a limiter assembly in a docking state of a fluid connector according to an embodiment of the present invention is shown;

[0071] Reference numerals:

[0072] 10-connecting piece;

[0073] 100-connecting member; 110-valve body structure; 111-body; 1111-installation cavity; 11111-output port; 11112-locking groove; 1112-locking groove; 1113-abutment portion; 1114-connecting surface; 1115-positioning groove; 1116-installation notch; 1117-valve core cavity; 11171-first hole position; 11172-second hole position; 112-connecting portion; 113-valve seat retaining spring; 114-valve seat sealing ring; 115-seat body; 1151-butt sealing groove; 120-butt structure; 121-first buckle; 122-second buckle; 123-avoidance groove; 124-locking groove; 130-sealing pad; 140-sealing sleeve;

[0074] 200-limiting assembly; 210-limiting pin; 211-movable cavity; 212-connecting hole; 213-driving tooth portion; 214-first anti-rotation groove; 220-switch pin; 221-movable groove; 2211-first groove portion; 2212-second groove portion; 2213-step surface; 222-fixing portion; 223-second anti-rotation groove; 230-locking member; 240-anti-rotation member; 250-elastic member;

[0075] 300-operating mechanism; 310-operating handle; 311-driving tooth groove; 312-accommodating cavity; 3121-movable hole; 3122-mounting hole; 320-positioning assembly; 321-handle unlocking member; 3211-unlocking slot; 322-handle positioning member; 323-handle reset member; 324-handle blocking member;

[0076] 400-valve core assembly; 410-valve core body; 420-valve core main shaft structure; 421-valve core drive shaft; 422-valve core plug; 423-valve core fastener; 424-drive sealing ring; 430-valve core sealing seat; 431-valve core sealing groove; 440-valve core sealing ring. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0078] With the continuous advancement of technology, various types of fluid transmission systems have been widely used in daily production and life. As an important component to ensure the safe and efficient delivery of fluids, the design of connectors usually involves the assembly of multiple parts. In the prior art, the combination of fluid connectors usually adopts a rotary connection, so it is necessary to set a limit structure between the two butt connectors to achieve the rotation limit function after connection.

[0079] In order to realize the locking function of the limiting structure, most of the connectors in the prior art adopt a multi-hole (three holes or more) structure, which is arranged and matched with the locking rod and the push rod on the body, and a locking steel ball is set between the connected holes to realize the locking and unlocking functions. This design assembles multiple pins in a limited space to achieve the locking effect. However, in order to avoid the body volume being too large and to ensure the function of multiple holes, the aperture is usually set smaller, which leads to a corresponding reduction in the diameter of each pin in the body, thereby affecting the strength of the pin. This structure with insufficient strength can easily cause the locking pin to break or fail in a high-pressure fluid transmission environment, thereby causing potential safety hazards, and even causing fluid leakage and equipment damage. Especially in a high-pressure process transmission environment, the pin body is prone to breakage, causing the connector to fail.

[0080] To solve the above problems, see Figures 1 to 12As shown, an embodiment of the present invention provides a fluid connector 10, which is provided with a flow channel for conveying fluid, and the connector 10 includes a connecting member 100, a limiting assembly 200 and an operating mechanism 300; the connecting member 100 is provided with an installation cavity 1111 spaced from the flow channel; the limiting assembly 200 can be movably accommodated in the installation cavity 1111; the limiting assembly 200 includes a limiting pin 210, a switch pin 220 and a locking member 230, the switch pin 220 is movably arranged relative to the limiting pin 210, and the locking member 230 is movably connected to the limiting pin 210; the operating mechanism 300 is transmission-connected to the limiting pin 210; wherein the switch pin 220 can move between a first position and a second position, and in the first position, the locking member 230 is locked to the limiting pin 210 and the connecting member 100; in the second position, the locking member 230 releases the limiting pin 210 and the connecting member 100, and the operating mechanism 300 can drive the limiting pin 210 to move relative to the connecting member 100.

[0081] The fluid connector 10 in this embodiment improves the combination of the connecting member 100 and the limiting assembly 200, which effectively solves the problem of insufficient strength of the locking pin of the connector 10 in the prior art, thereby achieving a safer and more reliable connection effect.

[0082] Specifically, the coupling member 10 of this embodiment arranges the limit pin 210, the switch pin 220 and the locking member 230 in the limit assembly 200 together in the installation cavity 1111, so that the switch pin 220 can move between the first position and the second position, thereby realizing the locking and releasing of the limit pin 210 by the locking member 230. This design enables the limit pin 210 to connect to another set of coupling members 10, thereby providing a limit function for both.

[0083] Compared with the existing connectors, the connector 10 of this embodiment can realize the linkage function of the limit assembly 200 without additionally setting a hole for accommodating the switch pin 220. Due to the optimization of the number of holes, the connector 10 of this embodiment can increase the diameter of the installation cavity 1111, thereby increasing the size of the limit pin 210 and the switch pin 220, improving the overall strength of the limit assembly 200, enhancing the working stability of the connector 10 under high pressure conditions, and ensuring the compactness of the overall structure of the connector 10. In addition, it should be noted that the connector 10 of this embodiment can be applied to fluids such as liquids and gases, and is not limited here.

[0084] In one embodiment, see Figure 1 , Figure 5 and Fig.12 As shown, the connecting member 100 is further provided with a locking groove 1112 spaced apart from the mounting cavity 1111 ; when in the second position, the operating mechanism 300 can drive the limiting pin 210 to be inserted into the locking groove 1112 of another group of connecting members 10 .

[0085] This arrangement can effectively achieve a stable connection between the connecting parts 10, and improve the reliability and durability of the overall structure. In this embodiment, specifically, from a structural point of view, when the two groups of connecting parts 10 are docked, their connecting surfaces 1114 are first arranged relative to each other and docked with each other. Thereafter, when the switch pin 220 moves to the second position, the operating mechanism 300 can drive the limit pin 210 to be inserted into the locking groove 1112 of the other group of connecting parts 10, forming an effective physical connection and positioning. This design ensures that the limit pin 210 and the locking groove 1112 can achieve efficient interaction under safe and stable conditions, thereby accurately limiting the mutual rotation between the two groups of connecting parts 10.

[0086] When the two sets of connecting members 10 need to be separated, the limiting pin 210 can be separated from the locking groove 1112 by reversely adjusting the operating mechanism 300. It is worth noting that after the limiting pin 210 is moved into place, the locking member 230 can lock the limiting pin 210 and the connecting member 100, thereby ensuring that the safety and convenience of the system are fully reflected during the entire operation process.

[0087] In the connecting parts in the prior art, at least three holes are usually provided, and the three holes are respectively connected to the switch lock pin, the limit lock pin and the unlocking part. The switch lock pin and the limit lock pin are respectively arranged in two of the holes. The unlocking part moves between the switch lock pin and the limit lock pin to unlock or release the two. When the two sets of connecting parts are connected, the limit lock pin is plugged into another hole to limit the two sets of connecting parts. In this scheme, since it is necessary to set multiple holes on the connecting parts, in order to avoid the holes occupying a large space on the connecting parts, the hole diameter needs to be designed to be as small as possible, which results in the switch lock pin and the limit lock pin having too small diameters and limited strength.

[0088] In the connecting member 10 of the present embodiment, by integrating the limit assembly 200 into the installation cavity 1111 of the connecting member 100, the installation cavity 1111 and the locking groove 1112 are provided on the connecting member 100 to realize the locking and matching function of the limit assembly 200. In this way, the apertures of the installation cavity 1111 and the locking groove 1112 can be designed to be larger to improve the strength of the limit assembly 200.

[0089] Furthermore, the connecting member 100 is further provided with an abutting portion 1113, which is located in the locking groove 1112. When the two sets of connecting members 10 are connected, the abutting portion 1113 abuts against the switch pin 220 to move the switch pin 220 to the second position. Thus, when the abutting portion 1113 contacts the switch pin 220, the switch pin 220 can be effectively pushed to move, thereby realizing the unlocking function of the locking member 230 between the limit pin 210 and the connecting member 100.

[0090] In this embodiment, by configuring the abutment portion 1113 on the connecting member 100, the limit assembly 200 can smoothly realize the unlocking function of the switch pin 220 without adding additional driving components, thereby simplifying the overall design. In addition, specifically, the abutment portion 1113 can be directly formed into an effective structure on the connecting surface 1114 of the connecting member 100 by cutting. In a preferred embodiment, the abutment portion 1113 can be designed as a cylindrical structure, while the locking groove 1112 is a circular hole, and the locking groove 1112 and the abutment portion 1113 are coaxially arranged, thereby ensuring the concentration and effectiveness of force transmission.

[0091] Of course, in some other embodiments, the abutment portion 1113 can be selectively cancelled, and an additional unlocking component can be used to drive the switch pin 220 to move between the first position and the second position. The unlocking component can be in various forms such as a linear push rod and a cylinder. In this design, the advantage of using an additional unlocking component is that it can flexibly adapt to more complex operating environments, improve the maintainability and modularity of the system, and switch different driving modes to meet specific application requirements.

[0092] In one embodiment, the outer diameter of the switch pin 220 is a, the inner diameter of the locking groove 1112 is b, and the outer diameter of the abutting portion 1113 is c, and the following relationship is satisfied: a>(bc) / 2.

[0093] In this embodiment, by limiting the relationship between the dimensions a, b and c, it is ensured that the outer diameter of the switch pin 220 is larger than the gap between the abutment portion 1113 and the locking groove 1112. This arrangement ensures that when the two sets of coupling members 10 are in the process of rotational docking, when the switch pin 220 of one set of coupling members 10 rotates to the position of the locking groove 1112, the switch pin 220 will not enter the gap between the locking groove 1112 and the abutment portion 1113, but can smoothly abut against the abutment portion 1113.

[0094] Specifically, when the condition that the outer diameter a of the switch pin 220 is greater than (bc) / 2 is met, the switch pin 220 can be effectively prevented from getting stuck or mis-entered during the docking process. This design not only improves the safety and stability of the connector during the docking process, but also enhances the connection reliability of the connector 10 and reduces the occurrence of accidental stuck failures. In addition, the geometric relationship between the abutment portion 1113 and the locking groove 1112 optimizes the guidance between the connectors 10, ensuring that docking can be achieved smoothly in actual applications.

[0095] Specifically, see Fig.12 As shown, when the two groups of connecting members 10 are docked and the installation cavity 1111 is connected to the locking groove 1112 , the limiting pin 210 in one group of connecting members 10 can be sleeved on the abutment portion 1113 in the other group of connecting members 10 .

[0096] Thus, during the docking process of the two groups of connecting members 10, the abutting portion 1113 can drive the switch pin 220 to move to the second position, at which time the locking member 230 releases the limit pin 210. After the mounting cavity 1111 of one group of connecting members 10 is aligned with the locking groove 1112 of the other group of connecting members 10, the limit pin 210 can be driven to move relative to the connecting member 100 by adjusting the operating mechanism 300, so that the limit pin 210 is inserted into the locking groove 1112 and sleeved on the abutting portion 1113, thereby realizing the connection limit function of the limit assembly 200. In this embodiment, by providing the abutting portion 1113 to cooperate with the limit pin 210, the overall structure of the limit assembly 200 can be made compact when connecting the two groups of connecting members 10.

[0097] Among them, the distance between the outer wall of the limit pin 210 in one group of connecting parts 10 and the inner wall of the locking groove 1112 in another group of connecting parts 10 is G1, and the distance between the inner wall of the limit pin 210 in one group of connecting parts 10 and the outer wall of the abutment part 1113 in another group of connecting parts 10 is G2, and G2>G1.

[0098] In this embodiment, by defining the dimensions G1 and G2, it can be ensured that when two sets of connectors 10 are docked, if the stop pin 210 has not yet been precisely coaxially aligned with the abutment 1113, the outer wall of the stop pin 210 will first contact the inner wall of the locking groove 1112. At this time, G2 is greater than G1, which can effectively prevent the inner wall of the stop pin 210 from contacting the outer wall of the abutment 1113. The advantage of this setting is that the coordination between the stop pin 210 and the inner wall of the locking groove 1112 can achieve the guidance of the plug-in, thereby effectively preventing the stop pin 210 from accidentally contacting and damaging the abutment 1113 during the docking process, ensuring the overall stability and safety of the system, and reducing the maintenance cost of the connector 10.

[0099] It should be noted that if G2 is not greater than G1, the limit pin 210 may collide with the abutment portion 1113 during docking and damage the abutment portion 1113. Once the abutment portion 1113 is damaged, the entire connecting component 100 needs to be replaced, which is not conducive to reducing the maintenance cost of the connecting component 10.

[0100] Please also read Figure 2 In one embodiment, the locking groove 1112 and the mounting cavity 1111 are arranged at intervals along the circumference of the connecting member 100 .

[0101] In one embodiment, the installation cavity 1111 and the locking groove 1112 are arranged along the circumferential direction of the connecting member 100, and the two groups of connecting members 10 can be rotated and docked; by arranging the installation cavity 1111 and the locking groove 1112 at intervals along the circumferential direction of the connecting member 100, when the two groups of connecting members 10 are docked, the installation cavity 1111 of one group of connecting members 100 can dock with the locking groove 1112 of the other group of connecting members 10, thereby achieving an effective connection.

[0102] This geometric layout design ensures that the switch pins 220 in the two groups of connecting members 10 can respectively abut against the abutment portion 1113 of the other group of connecting members 10, and the switch pins 220 can smoothly move to the second position. At the same time, under the driving action of the operating mechanism 300, the limit pins 210 in the two groups of connecting members 10 can be plugged and matched with the locking grooves 1112 in the other group of connecting members 10, thereby realizing the locking function.

[0103] Of course, in some embodiments, when the connecting members 100 in the two sets of connecting members 10 are plugged and connected in the radial direction, the installation cavity 1111 and the locking groove 1112 can also be arranged in the radial direction of the connecting member 10. This arrangement can further enhance the flexibility of the connecting member and provide a more convenient docking method when necessary. At the same time, the limiting assembly 200 can also effectively limit the two sets of connecting members 10 to prevent accidental loosening or displacement, thereby enhancing the stability and safety of the overall device.

[0104] In addition, the switch pin 220 and the limit pin 210 may be made of steel, aluminum or engineering plastics, etc. The specific selection is optimized based on factors such as structural strength, weight and cost to achieve the best balance of material properties. Therefore, in practical applications, the reasonable setting of these parameters will directly affect the performance and service life of the connector.

[0105] Furthermore, a smooth structure is provided at one end of the switch pin 220 facing the outside of the outer mounting cavity 1111 .

[0106] With this arrangement, the smooth structure can be in contact with the other set of connecting members 10 during the relative movement of the switch pin 220 with the other set of connecting members 10, thereby significantly improving the smoothness of the switch pin 220 when being driven to move. For example, when the edge of the installation cavity 1111 or the locking groove 1112 comes into contact with the switch pin 220 during the relative rotation of the two sets of connecting members 10, the smooth structure can guide the movement of the switch pin 220 to prevent the switch pin 220 from directly contacting the installation cavity 1111 or the locking groove 1112 and affecting the relative rotation between the two sets of connecting members 10.

[0107] Specifically, the smooth structure can be a rounded structure, a chamfered structure or other similar smooth surface formed at the end of the switch pin 220. The use of a rounded structure can effectively reduce the wear of the contact edge and improve durability; while the chamfered structure can enhance the adaptability of the switch pin 220 to misalignment and impact during assembly and use. In addition, the design of the smooth structure can also reduce the friction between the switch pin 220 and other contacting parts, reduce energy consumption, and improve operational flexibility.

[0108] In one embodiment, the connecting member 10 has a connecting surface 1114 for docking with another group of connecting members 10. When the two groups of connecting members 10 are docked, the connecting surfaces 1114 of the two connecting members 10 are arranged opposite to each other, and the openings of the locking groove 1112 and the installation cavity 1111 are both located on the connecting surface 1114.

[0109] Specifically, when the two groups of connecting members 10 are docked, the switch pin 220 of one group of connecting members 10 can abut against the connecting surface 1114 of the other group of connecting members 10 and move to the second position. In this embodiment, when the two groups of connecting members 10 are docked, the switch pin 220 first contacts the connecting surface 1114. During the connection process, the connecting surface 1114 abuts against the switch pin 220 of the other group of connecting members 10, so that the switch pin 220 moves smoothly to the second position. At this time, the connecting surface 1114 can effectively limit the movement of the limit pin 210 until the two groups of connecting members 10 rotate to the installation cavity 1111 of one group of connecting members 10 and the locking groove 1112 of the other group of connecting members 10. Subsequently, the operating mechanism 300 can drive the limit pin 210 to be inserted into the locking groove 1112, so that the relative rotation limit of the two groups of connecting members 10 is achieved through the cooperation of the limit pin 210 and the locking groove 1112.

[0110] It should be noted that, in some embodiments, an additional guide surface may be provided on the connecting member 100 to cooperate with the switch pin 220 for guidance. The guide surface may be an inclined surface, a plane or other geometric shapes to adapt to different working conditions and installation requirements. By providing an additional guide surface, the accuracy and stability of the docking between the switch pin 220 and the connecting member 10 can be improved, and the damage caused by poor alignment during the docking process can be reduced. In addition, unlocking elements such as electric push rods and cylinders can be configured to cooperate with the switch pin 220, thereby achieving precise control and position adjustment of the switch pin 220. This configuration not only realizes convenient operation, but also enhances the responsiveness of the entire device in dynamic conditions, which helps to improve the overall efficiency and performance of the system.

[0111] Specifically, the limit pin 210 and the switch pin 220 can be movably accommodated in the same installation cavity 1111, and the connecting component 100 is provided with an output port 11111 connected to the installation cavity 1111. When the switch pin 220 is located at the second position, the limit pin 210 can extend from the output port 11111; when the switch pin 220 moves from the second position to the first position, the switch pin 220 extends from the output port 11111.

[0112] Through this arrangement, the limit pin 210 and the switch pin 220 can both extend from the same output port 11111 of the installation cavity 1111, so that the overall structure of the limit assembly 200 is more compact, so that the diameter of the limit assembly 200 can be set as large as possible to improve the overall strength of the limit assembly 200. Specifically, when two groups of connecting members 10 are docked, the output port 11111 of one group of connecting members 10 can be aligned with the locking groove 1112 of the other group of connecting members 10, and then the limit pin 210 can be driven to extend from the output port 11111 and be inserted into the locking groove 1112 by adjusting the operating mechanism 300, so as to complete the limiting function of the limit assembly 200.

[0113] In this embodiment, the design method allows the limit pin 210 and the switch pin 220 to run in the same cavity, thereby reducing the relative movement space between the components and further reducing the installation volume. This compact structure not only improves the space utilization of the design, but also enhances the compressive and torsional rigidity of the limit component 200 when subjected to external forces.

[0114] Furthermore, the limit pin 210 is sleeved on the outer side of the switch pin 220 and is slidably arranged relative to the switch pin 220 .

[0115] By arranging the limit pin 210 outside the switch pin 220, the overall structure of the limit assembly 200 can be made compact. This design provides greater space utilization, allowing the limit pin 210 to have a larger diameter, thereby significantly improving its strength and enhancing the load-bearing capacity and stability of the limit assembly 200 during use.

[0116] In addition, the design of the limit pin 210 also helps to effectively guide the movement of the switch pin 220. Since the limit pin 210 is covered on the outside of the switch pin 220, its sliding fit characteristics will improve the movement accuracy between the two, ensuring that the switch pin 220 is correctly docked with the other set of connecting parts 10 during the opening and closing process. This guiding structure not only reduces wear during operation, but also reduces the probability of failure, further improving the working efficiency and service life of the component.

[0117] See also Figure 3 , Figure 4 and Fig.12As shown, in one embodiment, the inner wall of the installation cavity 1111 is provided with a locking groove 11112, the limit pin 210 is provided with a movable cavity 211 and a connecting hole 212 that are connected to each other, the switch pin 220 can be movably accommodated in the movable cavity 211, and the locking member 230 is movably connected to the connecting hole 212; in the first position, the locking member 230 is simultaneously engaged with the connecting hole 212 and the locking groove 11112; in the second position, the locking member 230 can be separated from the locking groove 11112.

[0118] Thus, when the switch pin 220 is located at the first position, the locking member 230 in the connecting hole 212 can be at least partially connected with the locking groove 11112, thereby effectively fixing the limit pin 210 and the connecting member 100 together. When the switch pin 220 moves to the second position, the locking member 230 can be separated from the locking groove 11112, and this process realizes the unlocking between the limit pin 210 and the connecting member 100. In one embodiment, the switch pin 220 and the locking member 230 may be connected via a flexible connector. When the switch pin 220 moves to the second position relative to the limit pin 210, the connector may pull the locking member 230 out of the locking groove 11112 to separate the two, thereby realizing the unlocking function. When the switch pin 220 moves toward the first position, the connector may abut against the locking member 230 and drive the locking member 230 to connect with the locking groove 11112. Specifically, the connector may be a flexible element such as a spring sheet or a steel sheet, which is not limited here.

[0119] It should be noted that the axial length of the locking member 230 along the connecting hole 212 can be set as follows: in the first position, the length of the locking member 230 is not greater than the length of the connecting hole 212 to prevent the locking member 230 from protruding from the connecting hole 212 toward the locking groove 11112.

[0120] In one embodiment, a movable groove 221 is provided on the outer wall of the switch pin 220; in the first position, the switch pin 220 abuts against the locking member 230 so that the locking member 230 is simultaneously engaged with the connecting hole 212 and the locking groove 11112; in the second position, the locking member 230 is at least partially accommodated in the movable groove 221 and can be separated from the locking groove 11112.

[0121] Thus, when the switch pin 220 is located at the first position, the locking member 230 can pass through the connecting hole 212 and connect with the locking groove 11112 by the push-up action, thereby effectively fixing the limit pin 210 and the connecting member 100 together. When the switch pin 220 moves to the second position, the movable groove 221 is connected with the connecting hole 212, so that the locking member 230 can smoothly move into the movable groove 221, and this process realizes the unlocking between the limit pin 210 and the connecting member 100. At the same time, the movable groove 221 extends along the axial direction of the limit pin 210, and the locking member 230 can move together with the movement of the limit pin 210. Through such a structural setting, the overall structure of the limit assembly 200 can be made more compact, thereby increasing the outer diameter of the limit pin 210 and the switch pin 220, thereby enhancing the overall strength of the limit assembly 200.

[0122] It should be noted that the length of the locking member 230 along the axial direction of the connecting hole 212 can be set as follows: in the first position, the depth of the locking groove 11112 ≤ the length of the locking member 230 ≤ the length of the connecting hole 212 + the depth of the locking groove 11112, and on the premise that the locking member 230 can be connected and locked with the connecting hole 212 and the locking groove 11112, it is prevented that the locking member 230 cannot return to the connecting hole 212 from the locking groove 11112. In the second position, the depth of the movable groove 221 ≤ the length of the locking member 230 ≤ the length of the connecting hole 212 + the depth of the movable groove 221, and on the premise that the locking member 230 can be separated from the locking groove 11112 to release the limit pin 210, it is prevented that the locking member 230 cannot return to the connecting hole 212 from the movable groove 221.

[0123] Furthermore, the movable groove 221 includes a first groove portion 2211 and a second groove portion 2212 which are connected to each other. The depth of the first groove portion 2211 is smaller than that of the second groove portion 2212. In the first position, the locking member 230 is respectively accommodated in the first groove portion 2211, the connecting hole 212 and the locking groove 11112. In the second position, the locking member 230 is respectively accommodated in the second groove portion 2212 and the connecting hole 212.

[0124] In this embodiment, by respectively setting the first groove portion 2211 and the second groove portion 2212 to cooperate, when the switch pin 220 is in the first position, the inner wall of the first groove portion 2211 can abut against the locking member 230. This design enables the locking member 230 to be accommodated in the first groove portion 2211, and can effectively limit the movement of the switch pin 220 in the direction from the second groove portion 2212 to the first groove portion 2211, so that the limiting assembly 200 is more stably connected when in the first position.

[0125] When the switch pin 220 moves to the second position, the locking member 230 can be smoothly accommodated in the second groove 2212. At this time, the locking member 230 releases the limit pin 210 and the connecting member 100, effectively realizing the unlocking function. The advantage of this design is that by providing two grooves of different sizes, the moving path of the locking member 230 can be effectively controlled, thereby enhancing the stability and safety of the limit assembly 200.

[0126] It should be noted that the depth difference design between the first groove portion 2211 and the second groove portion 2212 not only contributes to the stable connection of the limit pin 210, but also in practical applications, the depth of the first groove portion 2211 can be set to 1mm, 2mm, 3mm according to actual needs, and the depth of the second groove portion 2212 can be set to 4mm, 5mm, 6mm, etc. It is determined specifically according to actual design requirements and is not limited here. When the depth of the first groove portion 2211 and the second groove portion 2212 is not within this preferred range, it may cause the locking member 230 to become stuck or unstable during state conversion, thereby affecting the overall performance of the assembly. Through reasonable design and selection, the efficient and stable operation of the limit assembly 200 can be ensured.

[0127] Specifically, the length of the locking member 230 along the axial direction of the connecting hole 212 can be set as follows: in the first position, the depth of the locking groove 11112 ≤ the length dimension of the locking member 230 ≤ the depth of the first groove 2211 + the length of the connecting hole 212 + the depth of the locking groove 11112, and on the premise that the locking member 230 can be connected and locked with the first groove 2211, the connecting hole 212 and the locking groove 11112, it is prevented that the locking member 230 cannot return to the connecting hole 212 from the locking groove 11112. In the second position, the depth of the second groove 2212 ≤ the length dimension of the locking member 230 ≤ the length of the connecting hole 212 + the depth of the second groove 2212, and on the premise that the locking member 230 can release the limiting pin 210, it is prevented that the locking member 230 cannot return to the connecting hole 212 from the second groove 2212.

[0128] In one embodiment, a limiting wall is formed on a side of the first groove portion 2211 away from the second groove portion 2212 .

[0129] In this embodiment, a limiting wall is formed on the side of the first groove 2211 away from the second groove 2212, so that when the locking member 230 is contained in the first groove 2211, the limiting wall can abut against the locking member 230 to effectively limit the movement of the switch pin 220 in the direction from the second groove 2212 to the first groove 2211, so that the limiting assembly 200 is more stably connected when in the first position. It should be noted that when the limiting wall is limited, the force it bears mainly comes from the reverse force of the locking member 230. The limiting wall can be set as an inclined surface, and the angle design of the limiting wall can be adjusted within a certain range to adapt to different working environments and strength requirements. Specifically, the inclination angle of the limiting wall can be adjusted between 15° and 30°, and the specific value can be 15°, 20°, 25° or 30°, which is determined according to actual design requirements and is not limited here.

[0130] In one embodiment, the first groove portion 2211 and the second groove portion 2212 are connected to form a step surface 2213 , and the step surface 2213 can abut against the locking member 230 when in the second position.

[0131] In this embodiment, by forming a stepped surface 2213 between the first groove portion 2211 and the second groove portion 2212, when the locking member 230 moves into the second groove portion 2212, when the switch pin 220 has a tendency to move toward the outside of the installation cavity 1111, the locking member 230 can abut against the stepped surface 2213 to limit the movement of the switch pin 220. It should be noted that when the locking member 230 is limited, the force it bears mainly comes from the reverse force of the switch pin 220, and the angle design of the stepped surface 2213 can be adjusted within a certain range to adapt to different working environments and strength requirements. Specifically, the inclination angle of the stepped surface 2213 can be adjusted between 15° and 30°, and the specific value can be 15°, 20°, 25° or 30°, which is determined according to the actual design requirements and is not limited here.

[0132] See also Figure 8 As shown, in one embodiment, the outer wall of the limiting pin 210 is provided with a plurality of driving teeth 213 arranged in sequence along its axial direction, the operating mechanism 300 is provided with a plurality of driving tooth grooves 311, the operating mechanism 300 is movably connected to the connecting member 100, and the driving teeth 213 are transmission-connected to the driving tooth grooves 311.

[0133] It should be noted that the number of the driving tooth portions 213 can be one, two or more, and is not limited here. Providing multiple driving tooth portions 213 to cooperate with the driving tooth grooves 311 can improve the stability of the driving contact and the transmitted force, especially under high load conditions, and can effectively improve the reliability and response speed of the system.

[0134] In the specific implementation, the driving tooth portion 213 can adopt a sawtooth shape, a helical tooth shape or other suitable tooth shape design to take into account both transmission efficiency and manufacturing cost. If a sawtooth tooth shape is adopted, it can better prevent slippage during the driving process and enhance the degree of meshing between the teeth; if a helical tooth shape is selected, it can reduce noise and vibration when transmitting force in a specific direction, and improve the overall working stability.

[0135] In a preferred embodiment, the driving tooth portion 213 and the driving tooth groove 311 can be an arc-shaped structure. With this arrangement, the manufacturing cost of the operating mechanism 300 and the limiting pin 210 can be reduced while ensuring the stability of the combination of the two.

[0136] During the design process, it is necessary to select appropriate materials and structures according to the specific application environment. For example, if the ambient temperature is high, the limit pin 210 and the operating mechanism 300 should be made of high temperature resistant materials to prevent increased wear of the teeth and reduced mechanical properties. Specifically, the selected materials can be aluminum alloys, special plastics, etc., and the applicability under mechanical wear, corrosion, etc. should be considered.

[0137] Further, see Figure 4 and Figure 8 As shown, the limit pin 210 is also provided with a first stop groove 214, which is connected to the movable cavity 211; the switch pin 220 is provided with a second stop groove 223; the limit assembly 200 also includes a stop member 240, which is detachably connected to the connecting member 100, and the stop member 240 is at least partially inserted into the first stop groove 214 and the second stop groove 223 in sequence.

[0138] When assembling the limit assembly 200 of this embodiment, firstly, the switch pin 220 and the limit pin 210 are nested and then inserted into the installation cavity 1111, and then the first anti-rotation groove 214 of the limit pin 210 and the second anti-rotation groove 223 of the switch pin 220 are set correspondingly. Subsequently, the anti-rotation member 240 is connected to the connecting member 100, and the anti-rotation member 240 is respectively matched with the first anti-rotation groove 214 and the second anti-rotation groove 223 to effectively limit the rotation of the limit pin 210 and the switch pin 220 relative to the connecting member 100, ensuring that the limit assembly 200 has a high degree of activity accuracy during operation.

[0139] At the same time, this embodiment can also provide the matching positioning of the driving tooth portion 213 and the driving tooth groove 311 to enhance the running stability and accuracy and reduce the friction loss between the two. In some embodiments, the stopper 240 can be threadedly connected to the connecting member 100 for disassembly. Specifically, the locking member 230 is a sphere or a cylinder, and the locking member 230 is slidably matched with the connecting hole 212.

[0140] In a specific implementation, if the locking member 230 is selected as a sphere, it can provide lower friction in the connection hole 212, thereby reducing wear and extending its service life. The design of the sphere structure can also adapt to certain angle changes, making the connection more flexible and stable. In addition, the shape of the sphere helps to evenly distribute the load, reduce stress concentration, and help improve the reliability of the overall mechanical system.

[0141] If a column is used as the locking member 230, it is more suitable for applications requiring high-precision positioning. The planar contact design of the column can provide a more stable positioning effect and reduce the risk of failure due to vibration or impact in the corresponding working environment.

[0142] See also Figure 3 and Figure 4 As shown, in one embodiment, the limit assembly 200 also includes an elastic member 250, which is accommodated in the installation cavity 1111, and the elastic member 250 is respectively connected to the switch pin 220 and the connecting member 100, and the elastic member 250 is used to drive the switch pin 220 to move from the second position toward the first position.

[0143] In this embodiment, by arranging the elastic member 250 and the switch pin 220 to cooperate, when the force generated by the external drive is removed, the elastic member 250 can automatically drive the switch pin 220 to return to the first position by using its elastic characteristics. The advantage of this design is that it ensures the stability of the limit pin 210, avoids accidental extension caused by external force interference, and thus improves the safety and reliability of the entire system.

[0144] Specifically, the elastic member 250 can be a variety of elastic elements, such as compression springs, extension springs or gas springs, etc. The advantage of compression springs is that they can provide a large restoring force, which is suitable for situations where the reset speed is required; extension springs can achieve a large pulling force in a compact space, are not easily compressed and deformed, and are suitable for designs with narrow limited spaces; gas springs can provide smoother force transmission, which is suitable for applications that require precise control of movement.

[0145] Specifically, the switch pin 220 is provided with a fixing portion 222 , one end of the elastic member 250 is sleeved on the fixing portion 222 , and the other end of the elastic member 250 abuts against the end surface of the installation cavity 1111 .

[0146] In this embodiment, the elastic member 250 can be a coil spring, and the elastic member 250 is sleeved on the fixing portion 222, which has a simple structure and is easy to assemble. The design of the coil spring allows it to generate a large restoring force after being acted upon by an external force, effectively driving the switch pin 220 to return to the first position. The advantage of this design is that the coil spring can achieve the required elastic force in a smaller space, making the overall structure of the limit assembly 200 more compact. In addition, the manufacturing process of the coil spring is relatively mature and the cost is low, which helps to reduce the overall production cost.

[0147] See also Figures 9 to 11 As shown, in one embodiment, the operating mechanism 300 includes an operating handle 310 and a positioning assembly 320, the operating handle 310 is rotatably connected to the connecting member 100, and the operating handle 310 is transmission-connected to the limit pin 210, and the positioning assembly 320 is movably connected to the operating handle 310; the outer wall of the connecting member 100 is provided with a plurality of positioning grooves 1115, and the plurality of positioning grooves 1115 are sequentially arranged along the rotation direction of the operating handle 310, and the positioning assembly 320 is used to respectively engage with the positioning grooves 1115.

[0148] By setting the cooperation between the positioning assembly 320 and the operating handle 310, when the operating handle 310 needs to be adjusted, the positioning assembly 320 and the positioning slot 1115 can be easily unlocked. This design allows the user to flexibly adjust the angle or position of the operating handle 310, thereby improving the flexibility of operation. After the operating handle 310 is adjusted to the target position, the positioning assembly 320 can be snap-fitted with the positioning slot 1115 at the corresponding position, thereby effectively limiting the movement of the operating handle 310, ensuring the locking stability of the limiting assembly 200, and avoiding functional failure or component damage due to misoperation.

[0149] It should be noted that the number of the plurality of positioning slots 1115 can be three, four or more, depending on the specific design requirements of the operating handle 310. This is not a sole limitation. Adding a plurality of positioning slots 1115 can provide more flexible positioning options, so that the operating handle 310 can be stably locked in different functional states, thereby enhancing the operability and safety of the system. If the number of positioning slots is too small, the adjustment range may be limited, thereby affecting the flexibility of operation. Specifically, see Fig.11As shown, the operating handle 310 is provided with a connected accommodating cavity 312 and a movable hole 3121; the positioning assembly 320 includes a handle unlocking member 321 and a handle positioning member 322, the handle positioning member 322 is movably connected to the movable hole 3121, the outer wall of the handle unlocking member 321 is provided with an unlocking groove 3211, and the handle unlocking member 321 is slidably connected to the accommodating cavity 312 and can move between a third position and a fourth position; when in the third position, the handle positioning member 322 is respectively accommodated in the movable hole 3121 and the positioning groove 1115, and when in the fourth position, the handle positioning member 322 is respectively accommodated in the movable hole 3121 and the unlocking groove 3211.

[0150] With this arrangement, when the operating handle 310 needs to be unlocked, the user only needs to press the handle unlocking member 321 to make it enter the accommodating cavity 312, and make the unlocking groove 3211 correspond to the movable hole 3121, so that the handle positioning member 322 can be smoothly moved into the unlocking groove 3211 and separated from the positioning groove 1115. This operation process is simple and suitable for application scenarios where adjustments are frequently made, which helps to improve the use efficiency. In addition, by arranging the positioning assembly 320 in the accommodating cavity 312, the overall structure is compact, thereby reducing the volume of the operating mechanism 300 and improving the integrability and portability of the connecting member 10.

[0151] Furthermore, the positioning assembly 320 also includes a handle reset member 323, which is accommodated in the accommodating cavity 312 and is respectively connected to the handle unlocking member 321 and the operating handle 310, and the handle reset member 323 is used to drive the handle unlocking member 321 to move from the fourth position toward the third position.

[0152] In this embodiment, the handle reset member 323 can be designed as a spring structure or a flexible material, so that after the handle unlocking member 321 is pressed, it can automatically return to the initial position after unlocking. This design has the advantage of improving the convenience of operating the handle 310, ensuring that the handle unlocking member 321 can be quickly reset after each operation, avoiding misoperation or locking failure caused by failure to restore the position.

[0153] Specifically, the handle reset member 323 can be a compression spring, a tension spring or other active reset devices such as an electric push rod, a cylinder, etc. The selection of these reset members can provide users with different hand feelings and operating experiences. For example, a compression spring can provide a large reset force in a small space, while a tension spring is suitable for use in situations where a longer stroke is required.

[0154] In one embodiment, a notch may be provided on one side of the handle unlocking member 321 facing the handle resetting member 323, and the handle resetting member 323 may be at least partially accommodated in the notch. The advantage of this design is that it can improve the overall structural compactness of the positioning assembly 320, reduce space occupation, and help improve the integration and aesthetics of the device. In addition, through this design, the handle resetting member 323 can be more firmly fixed on the handle unlocking member 321, thereby improving the stability of the assembly and reducing the risk of displacement caused by vibration or other factors during use.

[0155] Specifically, the operating handle 310 is also provided with a mounting hole 3122 connected to the accommodating cavity 312, and the positioning assembly 320 also includes a handle blocking member 324, which is detachably connected to the mounting hole 3122, and the handle reset member 323 is respectively abutted against the handle unlocking member 321 and the handle blocking member 324.

[0156] When assembling the positioning assembly 320 of this embodiment, the handle unlocking member 321 and the handle positioning member 322 can be inserted into the accommodating cavity 312 from one end of the mounting hole 3122, and one end of the handle unlocking member 321 can be extended out of the accommodating cavity 312. Then, the handle reset member 323 is crimped to the other end of the handle unlocking member 321, and finally the handle blocking member 324 is connected to the operating handle 310 to cover the mounting hole 3122. This design has the advantages of simple structure and convenient assembly, ensuring that users can assemble and maintain the components quickly and efficiently.

[0157] Specifically, the handle blocking member 324 can be connected to the mounting hole 3122 by threads. In this embodiment, the advantage of the threaded connection is that it provides good airtightness and stability, and can effectively prevent the loosening of components caused by vibration. At the same time, the threaded connection also makes it easier to disassemble and replace the handle blocking member 324, further improving the maintainability of the device.

[0158] See also Figures 3 to 7 As shown, in one embodiment, a valve core cavity 1117 connected to the flow channel is opened inside the connecting member 100, and the connecting member 10 also includes a valve core assembly 400, which can be movably accommodated in the valve core cavity 1117. The valve core assembly 400 is connected to the operating mechanism 300, and the operating mechanism 300 is used to drive the valve core assembly 400 to move between closing or opening the flow channel.

[0159] In this embodiment, by driving the operating mechanism 300, not only can the limiting connection between the limiting pin 210 and another set of connecting members 10 be controlled, but also the valve core assembly 400 can be driven to effectively open the flow channel. In this way, it can be ensured that the flow channel is opened by the valve core assembly 400 only after the limiting pin 210 is firmly connected to the connecting member 10, thereby preventing the flow channel from accidentally opening when the connecting member 10 is not installed in place, thereby improving the connection reliability of the connecting member 10.

[0160] During the movement of the valve core assembly 400, its range of motion should be appropriately designed to ensure smooth transition between the closed position and the open position. Specifically, the range of motion of the valve core assembly 400 can be set within a certain angle or linear displacement, such as an angle range of 0° to 90°, or a linear displacement range of 0mm to 20mm. In this design, the opening angle and displacement of the valve core assembly 400 should be combined with specific application requirements to avoid fluid control instability caused by design defects. By optimizing the range of motion of the valve core assembly, the accuracy and safety of flow control can be effectively improved.

[0161] Specifically, see Figure 6 As shown, the valve core assembly 400 includes a valve core body 410 and a valve core main shaft structure 420 , the valve core body 410 is rotatably connected to the connecting member 100 via the valve core main shaft structure 420 , and the operating mechanism 300 is connected to the valve core main shaft structure 420 and is used to drive the valve core body 410 to rotate relative to the connecting member 100 .

[0162] In this embodiment, the valve core body 410 is rotationally connected to the connecting member 100 through the valve core main shaft structure 420, so that the adjustment process of the valve core body 410 is smoother and more stable. The advantage of adjusting the valve core body 410 by rotation is that it can provide higher sealing and lower resistance, which is particularly suitable for the application of ball valves. In this design, the valve core body 410 can adopt a spherical design, which can ensure that there is no fluid leakage when opening and closing, and has less flow resistance when the fluid flows through, thereby improving the flow efficiency of the fluid. The shape and material selection of the valve core body 410 are also very important. The valve core body 410 can be made of metal materials, such as stainless steel or copper alloy, which can enhance its corrosion resistance and service life.

[0163] In one embodiment, the connecting member 100 is further provided with a first hole position 11171 and a second hole position 11172 respectively connected to the valve core cavity 1117, and the first hole position 11171 and the second hole position 11172 are coaxially arranged; the valve core main shaft structure 420 includes a valve core drive shaft 421 and a valve core plug 422, the valve core drive shaft 421 is passed through the first hole position 11171 and is respectively connected to the operating mechanism 300 and the valve core body 410, and the valve core plug 422 is detachably connected to the second hole position 11172 and is rotatably connected to the valve core body 410.

[0164] When assembling the coupling 10 of this embodiment, the valve core body 410 can be first installed into the valve core cavity 1117, and then connected to the valve core body 410 through the valve core drive shaft 421 and the valve core plug 422 from both ends of the first hole 11171 and the second hole 11172. The valve core plug 422 can seal the second hole 11172, and the valve core drive shaft 421 can seal the first hole 11171, thereby ensuring that the fluid does not leak. This design not only improves the convenience of assembly, but also ensures the sealing performance of the valve core assembly.

[0165] Specifically, the material of the valve core drive shaft 421 can be selected from stainless steel, aluminum alloy or engineering plastics to provide good strength and corrosion resistance. At the same time, the valve core plug 422 can be connected by threaded connection or snap-on connection, which is convenient for disassembly and maintenance. The advantage of this structural design is that if the valve core body 410 needs to be replaced or maintained, the operator can quickly and conveniently remove the valve core plug 422 to achieve it, reducing downtime and improving the convenience of the system.

[0166] Specifically, the valve core main shaft structure 420 also includes a valve core fastener 423 , the valve core drive shaft 421 is inserted into the operating handle 310 , and the valve core drive shaft 421 and the operating handle 310 are fixedly connected by the valve core fastener 423 .

[0167] It should be noted that the valve core fastener 423 can be a screw, a nut, a pin or other matching fasteners, etc., depending on the actual design requirements, and is not limited here. Selecting a suitable fastener can not only ensure the stability of the structure, but also improve the overall strength and durability of the valve core spindle structure.

[0168] The advantage of using screws as valve core fasteners 42 is that they are easy to install and disassemble, and have good anti-vibration and anti-loosening properties, which are particularly suitable for occasions where frequent operations are used. If pins are selected, the tensile strength and shear strength of the connection point can be further improved, which is suitable for mechanical parts with higher safety requirements. In addition, the material of the valve core fastener 423 can also be selected according to the application environment, such as stainless steel, carbon steel or engineering plastics, etc., to improve corrosion resistance and the ability to adapt to different working conditions.

[0169] Furthermore, the valve core main shaft structure 420 also includes a driving sealing ring 424 , which is sleeved on the valve core driving shaft 421 and sealed between the valve core driving shaft 421 and the first hole 11171 .

[0170] In this embodiment, the driving seal ring 424 can effectively prevent fluid leakage between the valve core driving shaft 421 and the valve core cavity 1117, ensuring the sealing and reliability of the system. Specifically, the material of the driving seal ring 424 can be selected from rubber, polyurethane, polytetrafluoroethylene (PTFE) and other materials. The advantage of the specific implementation method is that the seal rings of different materials can adapt to different working environments. For example, the rubber seal ring has good elasticity and sealing, and is suitable for high-frequency dynamic sealing occasions; while polytetrafluoroethylene has excellent corrosion resistance and high temperature resistance, and is suitable for use in harsh chemical environments.

[0171] In one embodiment, the valve core assembly 400 further includes a valve core sealing seat 430 , which is connected to the flow channel and is sealed between the inner wall of the valve core cavity 1117 and the outer wall of the valve core body 410 .

[0172] The design of the valve core sealing seat 430 ensures effective sealing between the valve core body 410 and the valve core cavity 1117, preventing fluid leakage, thereby improving the overall working efficiency and safety of the system. In a specific implementation, the valve core sealing seat 430 can be made of materials such as rubber, polyurethane or polytetrafluoroethylene (PTFE), each of which has good elasticity and corrosion resistance and can adapt to different working environments. Selecting the appropriate material not only optimizes the sealing performance, but also increases the service life of the valve core assembly.

[0173] The function of the valve core sealing seat 430 is not limited to sealing, it can also position the installation of the valve core body 410, ensure the stability and accuracy of the valve core body in the valve cavity, and thus improve the response speed and control accuracy of the valve. Specifically, the shape and size design of the valve core sealing seat 430 should match the valve core body 410 to ensure that it can be firmly fixed during installation and reduce the movement gap.

[0174] Furthermore, the valve core assembly 400 also includes a valve core sealing ring 440. A valve core sealing groove 431 is opened on the side of the valve core sealing seat 430 away from the valve core body 410. The valve core sealing ring 440 is accommodated in the valve core sealing groove 431 and sealed between the valve core sealing seat 430 and the valve core cavity 1117.

[0175] In this embodiment, the provision of the valve core sealing ring 440 effectively enhances the overall sealing performance of the valve core assembly, further preventing leakage of the fluid during operation, thereby improving the safety and reliability of the system. Specifically, the material selection of the valve core sealing ring 440 can be rubber, silicone, polyurethane or polytetrafluoroethylene (PTFE), etc., which have good elasticity and corrosion resistance. The selection of a rubber sealing ring can provide better compressibility and flexibility, and is suitable for low-pressure environments; while the polytetrafluoroethylene sealing ring is more suitable for sealing requirements in high temperature or corrosive environments due to its excellent high temperature resistance and chemical resistance. This flexible selection of materials not only improves the applicability of the valve core assembly, but also extends the service life of the sealing ring and reduces the maintenance frequency.

[0176] It should be noted that the shape and size of the valve core sealing groove 431 should match the valve core sealing ring 440. Specifically, the depth of the sealing groove can be designed to be 2mm to 6mm, including 2mm, 4mm, 6mm and other intermediate values, to ensure that the sealing ring can be firmly placed in the groove and provide a good sealing effect.

[0177] See also Figure 7 As shown, in one embodiment, the connecting member 100 includes a body 111 and a connecting portion 112, the installation cavity 1111 and the valve core cavity 1117 are both provided on the body 111, the connecting portion 112 is detachably connected to the body 111 and is passed through the body 111, the connecting portion 112 and the body 111 are enclosed to form the valve core cavity 1117, and the connecting portion 112 is used to connect to an external pipeline.

[0178] The use of a split connection member 100 has significant advantages, especially that one end opening of the valve core cavity 1117 is arranged on the outer wall of the body 111, which can simplify the installation process of the valve core body 410. In a specific embodiment, the valve core body 410 can be conveniently installed through the opening of the valve core cavity 1117. This design allows the user to perform maintenance and replacement without completely disassembling the entire connection member 100, effectively saving time and improving the convenience of operation.

[0179] In addition, the detachable connection design of the connection part 112 further enhances the overall convenience of disassembly and assembly, which is convenient for users to quickly handle when repairing or replacing. Specifically, the connection method of the connection part 112 can be a threaded connection, a snap connection or a plug-in method, etc. Each connection method has its own advantages. For example, the threaded connection provides good sealing, while the plug-in method is convenient for quick disassembly and assembly. It should be noted that the selection of the specific connection method should be determined according to the actual application requirements, and is not limited here.

[0180] Furthermore, the connecting member 100 further includes a valve seat sealing ring 114 , which is sleeved on the connecting portion 112 and sealed between the connecting portion 112 and the body 111 .

[0181] Specifically, the valve seat sealing ring 114 is provided to improve the sealing performance of the overall system, avoid fluid leakage and ensure the stable operation of the equipment. In some embodiments, the material of the valve seat sealing ring 114 can be rubber, polyurethane or polytetrafluoroethylene (PTFE), etc. It should be noted that the size and shape of the valve seat sealing ring 114 should be compatible with the contact surface of the connecting portion 112 and the body 111. The thickness of the sealing ring can be set to 2mm, 4mm or 6mm, etc., and is selected according to actual design requirements. If the thickness of the sealing ring exceeds or falls below this range, it may result in insufficient sealing performance, and then cause leakage problems, affecting the overall efficiency and safety of the equipment.

[0182] See also Figure 7 and Fig. 9 As shown, in one embodiment, a mounting notch 1116 is formed through the exterior of the body 111 , and the connecting member 100 further includes a valve seat retaining spring 113 , which is received in the mounting notch 1116 and engaged with the connecting portion 112 .

[0183] In this embodiment, the design of the installation notch 1116 not only simplifies the installation process of the valve seat retaining spring 113 and improves the convenience of maintenance, but also effectively reduces the error introduced by manual operation. When assembling the coupling member 100 of this embodiment, after the coupling portion 112 is installed in place in the body 111, the valve seat retaining spring 113 can be inserted through the installation notch 1116 and clamped on the coupling portion 112, thereby achieving a fixed connection between the coupling portion 112 and the body 111.

[0184] It should be noted that the specific implementation of the valve seat retaining spring 113 can be made of different materials, such as stainless steel, carbon steel or plastic. Stainless steel provides good corrosion resistance and can withstand high pressure, and is suitable for applications with corrosive fluids. Carbon steel has good strength and economy under general conditions, while plastic materials are known for their lightness and low cost, and are suitable for low-load situations. The selection of specific materials should be optimized according to actual design requirements, and no sole limitation is made here.

[0185] In addition, the number of valve seat retaining springs 113 can be one, two, or more than two. The specific number can be set according to actual needs to improve the fixing effect of the connecting portion 112 and enhance its stability. For example, when multiple valve seat retaining springs 113 are used, the locking performance in a vibration or pressure change environment can be significantly improved, thereby effectively preventing the loosening and leakage of the connecting member 100, thereby ensuring the safety and reliability of the connecting member 10.

[0186] Specifically, see Figure 1 , Figure 2 and Figure 6 As shown, the connecting member 100 includes a valve body structure 110 and a docking structure 120 connected to each other, a mounting cavity 1111 is provided on the valve body structure 110, and the operating mechanism 300 is movably connected to the valve body structure 110; the docking structure 120 is provided on a side of the opening facing the mounting cavity 1111, and the two groups of connecting pieces 10 are plugged and connected through the docking structure 120. In this embodiment, by providing the docking structure 120 on the valve body structure 110, when the two groups of connecting pieces 10 are connected to each other, they can be mutually locked through the docking structure 120, thereby improving the connection strength between the two groups of connecting pieces 10.

[0187] Furthermore, the valve body structure 110 is provided with a seat body 115, and the flow channel is provided in the seat body 115, and the docking structure 120 is arranged around the seat body 115; the connecting component 100 also includes a sealing gasket 130, which is provided on the seat body 115 and is used to seal between the two seat bodies 115 when the two sets of connecting components 10 are docked.

[0188] In this embodiment, the two sets of connecting members 10 can be combined and docked in a mutually rotating manner, and by providing a sealing gasket 130 on the seat body 115, when the two sets of connecting members 10 are connected, the sealing gasket 130 can ensure the sealing between the seat bodies 115, thereby effectively preventing leakage in the flow channel. It should be noted that the material of the sealing gasket 130 can be polytetrafluoroethylene (PTFE), rubber or a composite material.

[0189] In one embodiment, the sealing gasket 130 may be a C-shaped sealing gasket. The design of the C-shaped sealing gasket enables it to form an effective sealing effect. Through its unique geometric shape, it can expand itself when under pressure, thereby better filling the seam gap. This structure can ensure that the sealing gasket maintains a good fit during use and reduce the risk of leakage.

[0190] In one embodiment, the base body 115 defines a butt sealing groove 1151 , which is located on the outer side of the base body 115 , and the sealing gasket 130 is at least partially engaged in the butt sealing groove 1151 .

[0191] Through this design, the sealing gasket 130 can provide a good positioning effect during the installation process, which is convenient for operators to assemble. At the same time, because the sealing gasket 130 is clamped in the docking sealing groove 1151, even if it is affected by external pressure or other factors during use, the sealing gasket 130 can maintain a stable position, thereby enhancing the firmness of the sealing connection and reducing the risk of leakage caused by displacement. Specifically, the shape and size of the sealing groove 1151 can be adjusted according to different sealing gaskets 130 to adapt to various working conditions and fluid types.

[0192] Furthermore, the connecting member 100 further includes a sealing sleeve 140 , which is sleeved on the outer side of the valve body structure 110 , and is used to seal between the two valve body structures 110 when the two sets of connecting members 10 are butt-jointed.

[0193] With this arrangement, when the two sets of connecting parts 10 are connected, the sealing sleeve 140 can effectively seal the outer side of the connecting part 10, thereby realizing the dustproof function of the connecting part 10, preventing external particles and pollutants from entering the internal structure, and reducing potential damage to the limit assembly 200.

[0194] It should be noted that the material of the sealing sleeve 140 can be selected from wear-resistant and high-temperature resistant rubber or polymer materials, such as fluororubber or silicone rubber, which have excellent performance in dustproof and sealing. At the same time, the shape of the sealing sleeve 140 can be circular or rectangular to adapt to different valve body structures 110, and the specific design should be flexibly adjusted according to actual use conditions.

[0195] In some embodiments, the design of the sealing sleeve 140 can also adopt a multi-isolation structure, which can significantly improve the dustproof and waterproof capabilities. Specifically, the sealing sleeve 140 can be composed of one or more layers of different materials. For example, the inner layer uses a material with strong elasticity to enhance the sealing performance, and the outer layer uses a wear-resistant material to improve durability. The number of sealing sleeves 140 can also be one or more, and there is no sole limitation here. Such a design can effectively meet the needs of different environmental conditions and improve the reliability and performance of the seal.

[0196] Specifically, the docking structure 120 includes an avoidance groove 123, a locking groove 124 and a plurality of clips, wherein the plurality of clips are spaced apart along the circumferential direction of the opening of the flow channel, and at least one of the clips is spaced apart from the valve body structure 110 to form a locking groove 124, and the avoidance groove 123 is connected to the locking groove 124; when the two sets of connecting parts 10 are docked, at least one of the clips is accommodated in the avoidance groove 123, and moves into the locking groove 124 when the two sets of connecting parts 10 rotate relative to each other.

[0197] Thus, when two sets of connecting members 10 are connected, the buckle of one set of connecting members 10 is first aligned with the avoidance groove 123 of the other set of connecting members 10. When connected, the buckle is accommodated in the avoidance groove 123 for positioning. Then, by driving the two sets of connecting members 10 to rotate relative to each other, the buckle can be smoothly moved to the locking groove 124 of the other set of connecting members 10, thereby completing the locking between the two sets of connecting members 10.

[0198] When the two groups of connecting members 100 are connected in place, the limiting assembly 200 can be operated by the operating mechanism 300 to limit the relative rotation of the two groups of connecting members 10, thereby completing the combined sealing of the two groups of connecting members 10.

[0199] In one embodiment, the buckle includes a first buckle 121 and a second buckle 122, the first buckle 121 surrounds the opening of the flow channel and protrudes outward, the second buckle 122 is arranged on the outside of the first buckle 121, and the end face of the second buckle 122 is flush with the plane where the opening of the installation cavity 1111 is located, the second buckle 122 is spaced apart from the valve body structure 110 to form a locking groove 124, and the avoidance groove 123 is arranged on one side of the second buckle 122 along the circumferential direction of the flow channel; when the two groups of connecting parts 10 are docked, the first buckle 121 of one group of connecting parts 10 is snap-fitted with the second buckle 122 of the other group of connecting parts 10.

[0200] In this embodiment, by forming an avoidance groove 123 on the edge of the second buckle 122, the first buckle 121 of another set of connecting parts 10 can be aligned with the avoidance groove 123. At this time, by rotating the connecting part 10 so that the first buckle 121 is engaged with the locking groove 124 located on the other side of the second buckle 122, the combined structure of the two sets of connecting parts 10 can be made more compact and the surface of the connecting component 100 on the connecting surface 1114 can be made smoother.

[0201] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0202] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0203] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0204] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0205] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A fluid coupling (10), characterized in that: The connecting piece (10) is provided with a flow channel for conveying a fluid inside, and the connecting piece (10) comprises: A connecting member (100) is provided with a mounting cavity (1111) spaced apart from the flow channel; A limit assembly (200) is movably accommodated in the installation cavity (1111); the limit assembly (200) comprises a limit pin (210), a switch pin (220) and a locking member (230); the switch pin (220) is movably arranged relative to the limit pin (210), and the locking member (230) is movably connected to the limit pin (210); and An operating mechanism (300) is transmission-connected to the limiting pin (210); The switch pin (220) is capable of moving between a first position and a second position. When in the first position, the locking member (230) is locked and connected with the limit pin (210) and the connecting member (100); when in the second position, the locking member (230) releases the limit pin (210) and the connecting member (100), and the operating mechanism (300) is capable of driving the limit pin (210) to move relative to the connecting member (100).

2. The fluid coupling (10) according to claim 1, characterized in that: The connecting member (100) is further provided with a locking groove (1112) spaced apart from the mounting cavity (1111); when in the second position, the operating mechanism (300) can drive the limit pin (210) to be inserted into the locking groove (1112) of another group of the connecting members (10).

3. The fluid coupling (10) according to claim 2, characterized in that: The connecting member (100) is further provided with an abutment portion (1113), wherein the abutment portion (1113) is located in the locking groove (1112), and when the two groups of connecting members (10) are docked, the abutment portion (1113) abuts against the switch pin (220) to move the switch pin (220) to the second position.

4. The fluid coupling (10) according to claim 3, characterized in that: The outer diameter of the switch pin (220) is a, the inner diameter of the locking groove (1112) is b, the outer diameter of the abutment portion (1113) is c, and a, b and c satisfy the following relationship: a>(bc) / 2.

5. The fluid coupling (10) according to claim 3, characterized in that: When the two groups of connecting members (10) are docked and the installation cavity (1111) is connected to the locking groove (1112), the limit pin (210) in one group of the connecting members (10) can be sleeved on the abutment portion (1113) in the other group of the connecting members (10).

6. The fluid coupling (10) according to claim 5, characterized in that: The distance between the outer wall of the limit pin (210) in one group of the connecting parts (10) and the inner wall of the locking groove (1112) in another group of the connecting parts (10) is G1, and the distance between the inner wall of the limit pin (210) in one group of the connecting parts (10) and the outer wall of the abutment portion (1113) in another group of the connecting parts (10) is G2, and G2>G1.

7. The fluid coupling (10) according to claim 2, characterized in that: The locking groove (1112) and the installation cavity (1111) are arranged at intervals along the circumference of the connecting member (100).

8. The fluid coupling (10) according to claim 2, characterized in that: One end of the switch pin (220) facing the outside of the installation cavity (1111) is provided with a smooth structure.

9. The fluid coupling (10) according to claim 2, characterized in that: The connecting member (10) has a connecting surface (1114), and when two groups of the connecting members (10) are butt-jointed, the two connecting surfaces (1114) are arranged opposite to each other, and the openings of the locking groove (1112) and the installation cavity (1111) are both located on the connecting surface (1114).

10. The fluid coupling (10) according to claim 1, characterized in that: The connecting member (100) is provided with an output port (11111) connected to the installation cavity (1111); when the switch pin (220) is located at the second position, the limit pin (210) can extend from the output port (11111); when the switch pin (220) moves from the second position to the first position, the switch pin (220) extends from the output port (11111).

11. The fluid coupling (10) according to claim 10, characterized in that: The limit pin (210) is sleeved on the outer side of the switch pin (220) and is slidably arranged relative to the switch pin (220).

12. The fluid coupling (10) according to claim 11, characterized in that: The inner wall of the installation cavity (1111) is provided with a locking groove (11112); the limit pin (210) is provided with a movable cavity (211) and a connecting hole (212) which are connected to each other; the switch pin (220) can be movably accommodated in the movable cavity (211); and the locking member (230) is movably connected to the connecting hole (212); When in the first position, the locking member (230) is simultaneously engaged with the connecting hole (212) and the locking groove (11112); when in the second position, the locking member (230) can be separated from the locking groove (11112).

13. The fluid coupling (10) according to claim 12, characterized in that: The outer wall of the switch pin (220) is provided with a movable groove (221); when in the first position, the switch pin (220) abuts against the locking member (230) so that the locking member (230) is simultaneously engaged with the connecting hole (212) and the locking groove (11112); when in the second position, the locking member (230) is at least partially accommodated in the movable groove (221) and can be separated from the locking groove (11112).

14. The fluid coupling (10) according to claim 13, characterized in that: The movable groove (221) comprises a first groove portion (2211) and a second groove portion (2212) which are connected to each other. The depth of the first groove portion (2211) is smaller than that of the second groove portion (2212). When in the first position, the locking member (230) is respectively accommodated in the first groove portion (2211), the connecting hole (212) and the locking groove (11112). When in the second position, the locking member (230) is respectively accommodated in the second groove portion (2212) and the connecting hole (212).

15. The fluid coupling (10) according to claim 14, characterized in that: The first groove portion (2211) and the second groove portion (2212) are connected to form a step surface (2213), and the step surface (2213) can abut against the locking member (230) when in the second position.

16. The fluid coupling (10) according to claim 12, characterized in that: The limit pin (210) is also provided with a first stop groove (214), and the first stop groove (214) is connected to the movable cavity (211); the switch pin (220) is provided with a second stop groove (223); the limit assembly (200) also includes a stop member (240), and the stop member (240) is detachably connected to the connecting member (100), and the stop member (240) is at least partially inserted into the first stop groove (214) and the second stop groove (223) in sequence.

17. The fluid coupling (10) according to claim 12, characterized in that: The locking member (230) is a sphere or a cylinder, and the locking member (230) is slidably matched with the connecting hole (212).

18. The fluid coupling (10) according to claim 10, characterized in that: The outer wall of the limiting pin (210) is provided with a plurality of driving teeth (213) arranged in sequence along its axial direction, the operating mechanism (300) is provided with a plurality of driving tooth grooves (311), the operating mechanism (300) is movably connected to the connecting member (100), and the driving teeth (213) are transmission-connected to the driving tooth grooves (311).

19. The fluid coupling (10) according to claim 1, characterized in that: The limit assembly (200) further comprises an elastic member (250), wherein the elastic member (250) is accommodated in the mounting cavity (1111), and the elastic member (250) is respectively connected to the switch pin (220) and the connecting member (100), and the elastic member (250) is used to drive the switch pin (220) to move from the second position toward the first position.

20. The fluid coupling (10) according to claim 19, characterized in that: The switch pin (220) is provided with a fixing portion (222), one end of the elastic member (250) is sleeved on the fixing portion (222), and the other end of the elastic member (250) abuts against the end surface of the installation cavity (1111).

21. The fluid coupling (10) according to claim 1, characterized in that: The operating mechanism (300) comprises an operating handle (310) and a positioning assembly (320); the operating handle (310) is rotatably connected to the connecting member (100), and the operating handle (310) is transmission-connected to the limit pin (210); the positioning assembly (320) is movably connected to the operating handle (310); the outer wall of the connecting member (100) is provided with a plurality of positioning grooves (1115), and the plurality of positioning grooves (1115) are sequentially arranged along the rotation direction of the operating handle (310); the positioning assembly (320) is used to respectively engage with the positioning grooves (1115).

22. The fluid coupling (10) according to claim 21, characterized in that: The operating handle (310) is provided with a communicating accommodation cavity (312) and a movable hole (3121); The positioning assembly (320) comprises a handle unlocking member (321) and a handle positioning member (322), wherein the handle positioning member (322) is movably connected to the movable hole (3121), an unlocking groove (3211) is provided on the outer wall of the handle unlocking member (321), and the handle unlocking member (321) is slidably connected to the accommodating cavity (312) and can move between a third position and a fourth position; when in the third position, the handle positioning member (322) is respectively accommodated in the movable hole (3121) and the positioning groove (1115), and when in the fourth position, the handle positioning member (322) is respectively accommodated in the movable hole (3121) and the unlocking groove (3211).

23. The fluid coupling (10) according to claim 22, characterized in that: The positioning assembly (320) further comprises a handle reset member (323), wherein the handle reset member (323) is accommodated in the accommodating cavity (312), and the handle reset member (323) is respectively connected to the handle unlocking member (321) and the operating handle (310), and the handle reset member (323) is used to drive the handle unlocking member (321) to move from the fourth position toward the third position.

24. The fluid coupling (10) according to claim 23, characterized in that: The operating handle (310) is also provided with a mounting hole (3122) connected to the accommodating cavity (312); the positioning assembly (320) further comprises a handle blocking member (324); the handle blocking member (324) is detachably connected to the mounting hole (3122); and the handle reset member (323) is respectively abutted against the handle unlocking member (321) and the handle blocking member (324).

25. The fluid coupling (10) according to any one of claims 1 to 24, characterized in that: The connecting component (100) has a valve core cavity (1117) connected to the flow channel, and the connecting component (10) also includes a valve core assembly (400), and the valve core assembly (400) can be movably accommodated in the valve core cavity (1117), and the valve core assembly (400) is connected to the operating mechanism (300), and the operating mechanism (300) is used to drive the valve core assembly (400) to move between closing or opening the flow channel.

26. The fluid coupling (10) according to claim 25, characterized in that: The valve core assembly (400) includes a valve core body (410) and a valve core main shaft structure (420), the valve core body (410) is rotatably connected to the connecting member (100) via the valve core main shaft structure (420), and the operating mechanism (300) is connected to the valve core main shaft structure (420) and is used to drive the valve core body (410) to rotate relative to the connecting member (100).

27. The fluid coupling (10) according to claim 26, characterized in that: The connecting member (100) is further provided with a first hole (11171) and a second hole (11172) respectively connected to the valve core cavity (1117), and the first hole (11171) and the second hole (11172) are coaxially arranged; The valve core main shaft structure (420) includes a valve core drive shaft (421) and a valve core plug (422), wherein the valve core drive shaft (421) is inserted into the first hole position (11171) and is respectively connected to the operating mechanism (300) and the valve core body (410), and the valve core plug (422) is detachably connected to the second hole position (11172) and is rotatably connected to the valve core body (410).

28. The fluid coupling (10) according to claim 27, characterized in that: The valve core main shaft structure (420) also includes a driving sealing ring (424), and the driving sealing ring (424) is sleeved on the valve core driving shaft (421) and sealed between the valve core driving shaft (421) and the first hole position (11171).

29. The fluid coupling (10) according to claim 26, characterized in that: The valve core assembly (400) further includes a valve core sealing seat (430), wherein the valve core sealing seat (430) is connected to the flow channel, and the valve core sealing seat (430) is sealed between the inner wall of the valve core cavity (1117) and the outer wall of the valve core body (410).

30. The fluid coupling (10) according to claim 29, characterized in that: The valve core assembly (400) further includes a valve core sealing ring (440), and a valve core sealing groove (431) is provided on the side of the valve core sealing seat (430) away from the valve core body (410). The valve core sealing ring (440) is accommodated in the valve core sealing groove (431) and is sealed between the valve core sealing seat (430) and the valve core cavity (1117).

31. The fluid coupling (10) according to claim 26, characterized in that: The connecting member (100) comprises a body (111) and a connecting portion (112); the mounting cavity (1111) and the valve core cavity (1117) are both arranged on the body (111); the connecting portion (112) is detachably connected to the body (111) and is passed through the body (111); the connecting portion (112) and the body (111) enclose the valve core cavity (1117); and the connecting portion (112) is used to be connected to an external pipeline.

32. The fluid coupling (10) according to claim 31, characterized in that: The connecting component (100) further comprises a valve seat sealing ring (114), wherein the valve seat sealing ring (114) is sleeved on the connecting portion (112) and sealed between the connecting portion (112) and the body (111).

33. The fluid coupling (10) according to claim 31, characterized in that: The body (111) is provided with a mounting slot (1116) extending through the outside thereof. The connecting member (100) further comprises a valve seat retaining spring (113). The valve seat retaining spring (113) is accommodated in the mounting slot (1116) and is engaged with the connecting portion (112).

34. The fluid coupling (10) according to any one of claims 1 to 24, characterized in that: The connecting member (100) comprises a valve body structure (110) and a docking structure (120) connected to each other; the installation cavity (1111) is provided on the valve body structure (110); the operating mechanism (300) is movably connected to the valve body structure (110); the docking structure (120) is provided on a side facing the opening of the installation cavity (1111), and the two groups of connecting members (10) are plug-connected via the docking structure (120).

35. The fluid coupling (10) according to claim 34, characterized in that: The valve body structure (110) is provided with a seat body (115), and the flow channel is provided in the seat body (115), and the docking structure (120) is arranged around the seat body (115); the connecting component (100) further comprises a sealing gasket (130), and the sealing gasket (130) is provided on the seat body (115) and is used to seal between the two seat bodies (115) when two groups of the connecting components (10) are docked.

36. The fluid coupling (10) according to claim 35, characterized in that: The seat body (115) is provided with a butt-joint sealing groove (1151), the butt-joint sealing groove (1151) is located on the outside of the seat body (115), and the sealing gasket (130) is at least partially engaged in the butt-joint sealing groove (1151).

37. The fluid coupling (10) according to claim 34, characterized in that: The connecting member (100) further comprises a sealing sleeve (140), wherein the sealing sleeve (140) is sleeved on the outside of the valve body structure (110), and the sealing sleeve (140) is used to seal between the two valve body structures (110) when the two sets of connecting members (10) are butt-jointed.

38. The fluid coupling (10) according to claim 34, characterized in that: The docking structure (120) comprises an avoidance groove (123), a locking groove (124) and a plurality of buckles, wherein the plurality of buckles are arranged at intervals along the circumferential direction of the opening of the flow channel, and at least one of the buckles is arranged at intervals with the valve body structure (110) to form the locking groove (124), and the avoidance groove (123) is in communication with the locking groove (124); When the two groups of connecting members (10) are butted together, at least one of the buckles is accommodated in the avoidance groove (123) and moves into the locking groove (124) when the two groups of connecting members (10) rotate relative to each other.

39. The fluid coupling (10) according to claim 38, characterized in that: The buckle comprises a first buckle (121) and a second buckle (122), the first buckle (121) surrounds the opening of the flow channel and is protruding outward, the second buckle (122) is arranged on the outside of the first buckle (121), and the end surface of the second buckle (122) is flush with the plane where the opening of the installation cavity (1111) is located, the second buckle (122) and the valve body structure (110) are spaced apart to form the locking groove (124), and the avoidance groove (123) is arranged on one side of the second buckle (122) along the circumferential direction of the flow channel; When the two groups of connecting members (10) are butted together, the first buckle (121) of one group of connecting members (10) is snap-fitted with the second buckle (122) of the other group of connecting members (10).

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