Joint assembly

Abstract

The utility model relates to the technical field of pipeline connectors, and discloses a connector assembly which comprises a first connector and a second connector, the first connector is provided with a first inner flow channel, the first connector is constructed to be a plastic part, and a first matching part is arranged at one end of the first connector in the extending direction of the first inner flow channel; the second connector is provided with a second inner flow channel and is a metal piece, and a second matching part is arranged at one end of the second connector in the extending direction of the second inner flow channel; the first matching part and the second matching part are matched in an inserted mode so as to communicate the first inner flow channel and the second inner flow channel, and the cross section of the matching face between the first matching part and the second matching part is in a non-circular shape in the extending direction of the second inner flow channel so as to limit relative rotation of the first connector and the second connector. The connector assembly solves the technical problem that after the connector assembly is assembled, relative rotation is prone to occurring, and then pipeline connection is inconvenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe joint, in particular to a joint assembly. BACKGROUND

[0002] In a fluid conveying system, a joint assembly is a key component for connecting pipelines, the joint assembly is used to connect two pipelines, and the performance of the joint assembly directly affects the sealing, reliability and durability of the pipeline system.

[0003] In the related art, the joint assembly is prone to relative rotation after assembly, which causes inconvenience in connecting the pipelines. CONTENT OF THE INVENTION

[0004] The present application provides a joint assembly, which solves the technical problem that the joint assembly is prone to relative rotation after assembly, which causes inconvenience in connecting the pipelines.

[0005] In order to achieve the above purpose, the main technical scheme adopted by the present application includes:

[0006] The joint assembly provided by the present application includes a first joint and a second joint, the first joint has a first inner flow channel, the first joint is configured as a plastic part, and a first matching part is arranged at one end of the first joint along the extension direction of the first inner flow channel; the second joint has a second inner flow channel, the second joint is configured as a metal part, and a second matching part is arranged at one end of the second joint along the extension direction of the second inner flow channel; wherein the first matching part and the second matching part are inserted and matched to connect the first inner flow channel and the second inner flow channel, and the cross-sectional shape of the matching surface between the first matching part and the second matching part along the extension direction of the first inner flow channel or the second inner flow channel is non-circular to limit the relative rotation of the first joint and the second joint.

[0007] The joint assembly provided by the present application has the advantages that the first joint is configured as a plastic part and the second joint is configured as a metal part, which can reduce the metal contact area of the medium and the joint assembly, reduce metal precipitation, improve the use safety of the joint assembly, make the weight of the joint assembly lighter, and the cross-sectional shape of the matching surface of the first matching part and the second matching part is non-circular, which limits the relative rotation between the first joint and the second joint, ensures the stability of the connection of the first joint and the second joint, and improves the stability and reliability of the structure of the joint assembly.

[0008] Optionally, the cross-sectional shape of the matching surface between the first matching part and the second matching part is polygonal.

[0009] The cross-sectional shape of the fitting surface of the first fitting part and the second fitting part is configured as a polygon, which can provide multiple contact points and contact areas, so that the mutual constraint and support of the first fitting part and the second fitting part are stronger, effectively resisting torsional force and other external forces, further enhancing the stability of the connection of the first joint and the second joint, and making the joint of the joint assembly more stable.

[0010] Optionally, the first inner flow channel comprises a first opening and a second opening, the second opening is in communication with the second inner flow channel, and the first opening is not directly opposite to the second opening.

[0011] The design that the first opening and the second opening are not directly opposite can effectively change the flow direction of the fluid medium, the joint assembly can better adapt to different pipe routes and space limitations, fully utilize the limited space, avoid too complex pipeline layout or occupy too much space, and improve the feasibility and convenience of system installation.

[0012] Optionally, the first joint and the second joint respectively have first ends and second ends close to each other, the first fitting part is configured as a first groove provided at the first end, the second fitting part is configured as a first protrusion provided at the second end, and the first groove is inserted and matched with the first protrusion.

[0013] The second fitting part is configured as a first protrusion provided at the second end, and the first groove is inserted and matched with the first protrusion, which can improve the assembly and manufacturing efficiency of the joint assembly on the one hand, and the close fit of the first protrusion and the first groove can also prevent the leakage of the fluid medium, enhance the sealing effect of the joint assembly, and improve the use stability and reliability of the joint assembly.

[0014] Optionally, the joint assembly further comprises a first locking part, which is detachably connected with the first end and the second end to limit the first joint and the second joint from separating from each other.

[0015] The first locking part is detachably provided at the first end and the second end to limit the first joint and the second joint from separating from each other, which on the one hand can maintain and replace the first joint and the second joint by detaching the first locking part when the joint assembly needs to be maintained or replaced, reducing the maintenance cost, and on the other hand can also fix the first joint and the second joint together, enhancing the structural stability of the joint assembly.

[0016] Optionally, the first protrusion and the first groove respectively have first limiting surfaces and second limiting surfaces that fit with each other, the first limiting surfaces and the second limiting surfaces are respectively provided with first limiting grooves and second limiting grooves facing each other, and the first locking part is inserted and matched in the first limiting grooves and the second limiting grooves.

[0017] The first locking part is inserted and matched with the first limiting groove and the second limiting groove, so that the first connector and the second connector are locked and fixed, the probability of leakage of the fluid medium from the first connector and the second connector is reduced, and the stability of the connector structure is improved.

[0018] Optionally, the first protrusion and the first groove are both configured as annular structures, the second limiting surface includes two second limiting grooves arranged at intervals, and the first locking part includes a first bottom wall and two first side walls arranged at two ends of the first bottom wall in the length direction, and each first side wall is inserted and matched with the first limiting groove and the corresponding second limiting groove.

[0019] Each first side wall is inserted and matched with the first limiting groove and the corresponding second limiting groove, so that the insertion and matching of the plurality of first side walls and the first limiting groove can more firmly connect the first connector and the second connector together, improve the stability of the connector assembly structure, reduce the probability of leakage of the fluid medium, and prolong the service life of the connector assembly.

[0020] Optionally, the connector assembly further includes a first plate part having a first mounting hole, and the first mounting hole is matched with the second end along the extension direction of the first inner flow channel or the second inner flow channel, and the cross-sectional shape of the matching surface of the first mounting hole and the second end is non-circular.

[0021] The cross-sectional shape of the matching surface of the first mounting hole and the second end is non-circular, so that relative rotation between the first plate part and the first connector can be prevented, and the connector assembly can be more stably fixed in the region to be fixed.

[0022] Optionally, the cross-sectional shape of the matching surface of the first mounting hole and the second end is polygonal.

[0023] The cross-sectional shape of the matching surface of the first mounting hole and the second end is polygonal, so that when the first plate part bears a rotating force, the polygonal design can provide a certain resistance in all directions, making the connector assembly more stable and reliable during use, reducing problems such as sealing failure and leakage caused by loosening or rotation, and improving the safety and stability of the connector assembly.

[0024] Optionally, the first connector and the second connector respectively have a third end and a fourth end away from each other, and the outer peripheral surface of the fourth end is provided with a first thread

[0025] The thread is arranged on the outer peripheral surface of the fourth end, and the thread is connected with the external pipeline, so that the external thread on the second connector and the internal thread on the pipeline are intermeshed, and then force and torque are transmitted through the thread cooperation, a stable connection is provided, and the probability of leakage of the fluid medium is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0027] Figure 1 The structure schematic diagram of the joint assembly provided by the embodiment of the present application is shown in the figure.

[0028] Figure 2 The structure schematic diagram of the joint assembly provided by the embodiment of the present application is shown in the figure. Figure 1

[0029] Figure 3 The front view of the joint assembly provided by the embodiment of the present application is shown in the figure.

[0030] Figure 4 The structure schematic diagram of the joint assembly provided by the embodiment of the present application is shown in the figure. Figure 3 The sectional view in the A-A direction is shown in the figure.

[0031] Figure 5 The structure schematic diagram of the second joint provided by the embodiment of the present application is shown in the figure.

[0032] Figure 6 The front view of the joint assembly provided by the embodiment of the present application is shown in the figure. Figure 5

[0033] Figure 7 The top view of the joint assembly provided by the embodiment of the present application is shown in the figure. Figure 6

[0034] Figure 8 The structure schematic diagram of the first joint provided by the embodiment of the present application is shown in the figure.

[0035]

Explanation of reference numerals

[0036] The joint assembly 100 is shown in the figure.

[0037] The first joint 110; the first inner flow channel 111; the first opening 111A; the second opening 111B; the third opening 111C; the first matching part 112; the first groove 113; the second limiting surface 1130; the first end 114; the second limiting groove 115; the third end 116; the bolt hole 117; the second protrusion 118.

[0038] The second joint 120; the second inner flow channel 121; the second matching part 122; the first protrusion 123; the first limiting surface 1230; the second end 124; the first limiting groove 125; the fourth end 126; the second groove 127.

[0039] The first locking part 130; the first bottom wall 131; the first side wall 132.

[0040] ​​​First plate portion 140; first mounting hole 141; second mounting hole 142;

[0041] Limiting protrusion 150;

[0042] First sealing ring 160. DETAILED DESCRIPTION

[0043] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0045] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "attachment" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0048] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0049] In fluid transport systems, connector assemblies are key components for connecting pipelines. They are used to connect two pipelines, and their performance directly affects the sealing, reliability, and durability of the pipeline system.

[0050] In related technologies, the connector assembly is made of metal. Since all-metal connector assemblies come into large-area contact with water or other media, metal can easily leach into the water, potentially harming human health. Furthermore, metal connector assemblies are relatively heavy, hindering lightweight design.

[0051] L-type connector assemblies are usually divided into two parts. After the two parts are assembled, they are prone to relative rotation, which makes it inconvenient to connect the pipeline and reduces the connection efficiency of the metal pipe fittings.

[0052] In view of this, this application discloses a connector assembly, which includes a first connector and a second connector. The first connector has a first inner flow channel and is constructed of plastic. A first mating portion is provided at one end of the first connector along the extension direction of the first inner flow channel. The second connector has a second inner flow channel and is constructed of metal. A second mating portion is provided at one end of the second connector along the extension direction of the second inner flow channel. The first mating portion and the second mating portion are inserted and mated to connect the first inner flow channel and the second inner flow channel. The cross-sectional shape of the mating surface between the first mating portion and the second mating portion is non-circular along the extension direction of the first inner flow channel or the second inner flow channel to restrict the relative rotation of the first connector and the second connector.

[0053] In the above scheme, the first connector is made of plastic and the second connector is made of metal. This reduces the metal contact area between the medium and the connector assembly, reduces metal precipitation, improves the safety of the connector assembly, and makes the connector assembly lighter. In addition, the cross-sectional shape of the mating surfaces of the first and second mating parts is non-circular, which restricts the relative rotation between the first and second connectors, ensures the stability of the connection between the first and second connectors, and improves the stability and reliability of the connector assembly structure.

[0054] The connector assembly disclosed in this application can be used in water heater pipes, air conditioning cooling pipes, hot water circulation pipes, industrial fluid transportation pipes, and other pipelines.

[0055] The first connector disclosed in the embodiments of this application can be constructed as an L-shaped connector or as a straight cylindrical connector.

[0056] For ease of explanation, the following embodiments will be described using a connector assembly according to an embodiment of this application as an example.

[0057] Figure 1 This is a schematic diagram of the connector assembly provided in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the exploded structure; Figure 3 A front view of the connector assembly provided in an embodiment of this application; Figure 4 for Figure 3 Sectional view in the AA direction; Figure 5 This is a schematic diagram of the structure of the second connector provided in an embodiment of this application; Figure 6 for Figure 5 The front view; Figure 7 for Figure 6 Top view; Figure 8 This is a schematic diagram of the structure of the first connector provided in an embodiment of this application.

[0058] Please refer to Figures 1 to 4 The connector assembly 100 includes a first connector 110 and a second connector 120. The first connector 110 has a first inner flow channel 111 and is constructed of plastic. A first mating portion 112 is provided at one end of the first connector 110 along the extending direction of the first inner flow channel 111. The second connector 120 has a second inner flow channel 121 and is constructed of metal. A second mating portion 122 is provided at one end of the second connector 120 along the extending direction of the second inner flow channel 121. The first mating portion 112 and the second mating portion 122 are inserted and mated to connect the first inner flow channel 111 and the second inner flow channel 121. The cross-sectional shape of the mating surface between the first mating portion 112 and the second mating portion 122 is non-circular along the extending direction of the first inner flow channel 111 or the second inner flow channel 121 to restrict the relative rotation of the first connector 110 and the second connector 120.

[0059] The connector assembly 100 includes a first connector 110 and a second connector 120, which are connected and fitted together to form the connector assembly 100. For example, the first connector 110 can be used to connect one end of a pipeline, and the second connector 120 can be used to connect one end of another pipeline. A medium can flow through the connector assembly 100 in both pipelines. The medium flowing inside the connector assembly 100 can be water, natural gas, or other gases or liquids with flow properties.

[0060] The first connector 110 has a first inner flow channel 111 in which the medium can flow. The extension direction of the first inner flow channel 111 is also the flow direction of the medium. Along the extension direction of the first inner flow channel 111, the first connector 110 has a first mating part 112. The first connector 110 is constructed of plastic, which gives it advantages such as light weight, low cost, and corrosion resistance. This reduces the weight and cost of the entire connector assembly 100. Compared to using a metal material, using a plastic structure for the first connector 110 reduces metal leaching, improves the safety of the connector assembly 100, and reduces the hazards caused by metal leaching into the water.

[0061] The second connector 120 has a second inner flow channel 121 in which a medium (water, natural gas, etc.) can flow. The extension direction of the second inner flow channel 121 is the same as the flow direction of the medium. Along the extension direction of the second inner flow channel 121, the second connector 120 has a second mating part 122. The second connector 120 is constructed of metal, which gives it advantages such as high strength and rigidity. Moreover, metal structural components can withstand greater pressure and load-bearing capacity, ensuring the stability and reliability of the connector assembly 100 under high pressure and high load conditions.

[0062] The insertion and engagement of the first mating part 112 and the second mating part 122 enables the first inner flow channel 111 and the second inner flow channel 121 to be connected, allowing the fluid medium to flow from the first inner flow channel 111 to the second inner flow channel 121, or from the second inner flow channel 121 to the first inner flow channel 111. The fluid medium can pass smoothly through the first connector 110 and the second connector 120, thereby facilitating smooth flow between the pipes.

[0063] For example, the first inner flow channel 111 and the second inner flow channel 121 extend in the same direction when they are inserted into the first mating portion 112 and the second mating portion 122. Along a direction perpendicular to the extension direction of the second inner flow channel 121, the first mating portion 112 and the second mating portion 122 abut against each other. The cross-sectional structure of the abutting point of the first mating portion 112 and the second mating portion 122 is non-circular. That is, along the extension direction of the second inner flow channel 121, the projected structure of the first mating portion 112 and the second mating portion 122 is non-circular. This effectively restricts the relative rotation of the first connector 110 and the second connector 120. In actual use, even if the first connector 110 or the second connector 120 is subjected to external force, the non-circular mating surface can prevent relative twisting between the first connector 110 and the second connector 120, ensuring the stability of the connection and avoiding problems such as sealing failure and fluid leakage caused by relative rotation. This improves the operational reliability and sealing performance of the connector assembly 100.

[0064] Specifically, the first connector 110 is constructed of plastic, and the second connector 120 is constructed of metal. This reduces the metal contact area between the medium and the connector assembly 100, reduces metal precipitation, improves the safety of use of the connector assembly 100, and makes the connector assembly 100 lighter. In addition, the cross-sectional shape of the mating surfaces of the first mating part 112 and the second mating part 122 is non-circular, which restricts relative rotation between the first connector 110 and the second connector 120, ensures the stability of the connection between the first connector 110 and the second connector 120, and improves the stability and reliability of the connector assembly 100 structure.

[0065] Please refer to Figures 1 to 4 In this embodiment, the cross-sectional shape of the mating surface between the first mating part 112 and the second mating part 122 is polygonal.

[0066] For example, the cross-sectional shape of the mating surface between the first mating part 112 and the second mating part 122 can be a polygon such as a triangle, quadrilateral, pentagon, hexagon, heptagon, or octagon.

[0067] A polygon can be a regular geometric shape. When machining the first mating part 112 of the first connector 110 and the second mating part 122 of the second connector 120, polygons are easier to machine than complex non-circular curves. For example, polygonal shapes can be easily machined using conventional machining methods, such as turning, which helps to reduce the manufacturing cost of the connector assembly 100.

[0068] Furthermore, the cross-sectional shape of the mating surfaces of the first mating part 112 and the second mating part 122 is constructed as a polygon. The polygon can provide multiple contact points and contact areas, which can make the mutual constraint and support of the first mating part 112 and the second mating part 122 stronger, effectively resist torsional force and other external forces, further enhance the stability of the connection between the first joint 110 and the second joint 120, and make the joint assembly 100 more stable.

[0069] Please refer to Figures 1 to 4 In this embodiment, the first inner flow channel 111 includes a first opening 111A and a second opening 111B. The second opening 111B is connected to the second inner flow channel 121, and the first opening 111A and the second opening 111B are not directly opposite each other.

[0070] The first inner flow channel 111 comprises a first opening 111A and a second opening 111B, which are oriented in different directions. For example, the second joint 120 can be configured as a straight cylinder, the axis of the second joint 120 extends in the same direction as the second inner flow channel 121, and the first opening 111A and the second opening 111B are not directly opposite. For example, the first inner flow channel 111 can be configured as an L-shaped flow channel, that is, the fluid medium can enter the first inner flow channel 111 from the first opening 111A and then exit the first inner flow channel 111 from the second opening 111B. The direction in which the fluid medium enters the first inner flow channel 111 is perpendicular to the direction in which the fluid medium exits the first inner flow channel 111. Moreover, the L-shaped flow channel can make the fluid medium turn more smoothly when changing the flow direction of the fluid medium, reducing turbulence and vortex phenomena of the fluid medium. This helps to reduce the flow resistance of the fluid medium in the pipeline, reduce energy loss, and also reduce noise and vibration caused by fluid medium impact, improve the stability and reliability of the entire system. Along the extension direction of the second inner flow channel 121, the first opening 111A and the second opening 111B are oriented in different directions, the axis of the first opening 111A is different from the extension direction of the second inner flow channel 121, and the axis of the second opening 111B is the same as the extension direction of the second inner flow channel 121.

[0071] Specifically, the design that the first opening 111A and the second opening 111B are not directly opposite can effectively change the flow direction of the fluid medium, and the joint assembly 100 can better adapt to different pipeline directions and space limitations, fully utilize limited space, avoid overly complex pipeline layout or occupy too much space, and improve the feasibility and convenience of system installation.

[0072] Please refer to Figures 1 to 5 In this embodiment, the first joint 110 and the second joint 120 each have a first end 114 and a second end 124 close to each other, the first fitting part 112 is configured as a first groove 113 arranged at the first end 114, and the second fitting part 122 is configured as a first protrusion 123 arranged at the second end 124, and the first groove 113 and the first protrusion 123 are inserted and fitted.

[0073] For example, the second opening 111B is arranged at the first end 114, and the first fitting part 112 is also arranged at the first end 114, and the first fitting part 112 is configured as a first groove 113, which can surround the second opening 111B, that is, the first groove 113 is located at the outer periphery of the second opening 111B, and the second end 124 of the second connector 120 is provided with a first protrusion 123, which can protrude from the outer periphery of the second inner flow channel 121, and the first protrusion 123 is arranged at the second end 124, and the first groove 113 and the first protrusion 123 are inserted and fitted, thereby limiting the relative rotation of the first connector 110 and the second connector 120.

[0074] The first fitting part 112 is configured as a first groove 113, and the second fitting part 122 is configured as a first protrusion 123, and the first groove 113 and the first protrusion 123 are inserted and fitted, and the surfaces of the first groove 113 and the first protrusion 123 can also be tightly fitted, thereby improving the sealing performance of the connector assembly 100, preventing fluid medium leakage, further enhancing the sealing effect, and improving the structural stability and reliability of the connector assembly 100.

[0075] In addition, the design of the first groove 113 and the first protrusion 123 can provide clear guidance for installation, and the operator can easily align the first protrusion 123 with the first groove 113 for insertion, thereby reducing the installation difficulty of the connector assembly 100 and improving the assembly efficiency of the connector assembly 100.

[0076] Please refer to Figures 1 to 6 In this embodiment, the connector assembly 100 further comprises a first locking part 130, which is detachably connected to the first end 114 and the second end 124 to limit the disengagement of the first connector 110 and the second connector 120 from each other.

[0077] The first locking part 130 is used to lock the first connector 110 and the second connector 120, so that the first connector 110 and the second connector 120 are fixedly connected, and the disengagement of the first connector 110 and the second connector 120 in the axial direction is limited, the constraint of the first connector 110 and the second connector 120 in the axial direction is enhanced, and the structural stability of the connector assembly 100 is improved.

[0078] Furthermore, the first locking part 130 is detachably connected to the first end 114 and the second end 124, so that when maintenance, repair or replacement of parts of the connector assembly 100 is required, only the first locking part 130 needs to be disassembled, and the first connector 110 and the second connector 120 are easily separated, and then the interior of the connector assembly 100 is maintained and cleaned, and the first locking part 130 is reinstalled, so that the normal use of the connector assembly 100 can be restored, and the maintenance time and cost are reduced.

[0079] Please refer toFigures 1 to 8 In the embodiment, the first protrusion 123 and the first recess 113 are provided with the first limiting surface 1230 and the second limiting surface 1130 respectively, which are abutted with each other, and the first limiting surface 1230 and the second limiting surface 1130 are provided with the first limiting slot 125 and the second limiting slot 115 respectively, which are towards each other, and the first locking portion 130 is inserted into the first limiting slot 125 and the second limiting slot 115.

[0080] For example, along the direction perpendicular to the axial direction of the second inner flow channel 121, the first protrusion 123 and the first recess 113 are provided with the first limiting surface 1230 and the second limiting surface 1130 respectively, which are abutted with each other, the opening of the first limiting slot 125 is towards the second limiting surface 1130, and the opening of the second limiting slot 115 is towards the first limiting surface 1230. The first locking portion 130 can be inserted into the first limiting slot 125 and the second limiting slot 115 simultaneously, and along the axial direction of the second inner flow channel 121, the first locking portion 130 abuts with both sides of the first limiting slot 125 simultaneously, and the first locking portion 130 abuts with both sides of the second limiting slot 115 simultaneously, thereby fixing the first joint 110 and the second joint 120 in the axial direction. The first limiting surface 1230 and the second limiting surface 1130 can be parallel to the axis of the second joint 120.

[0081] Specifically, the first locking portion 130 is inserted into the first limiting slot 125 and the second limiting slot 115, which can lock and fix the first joint 110 and the second joint 120, reduce the probability of fluid medium leakage from the first joint 110 and the second joint 120, and improve the stability of the joint structure.

[0082] Please refer to Figures 1 to 8 In the embodiment, the first protrusion 123 and the first recess 113 are both configured as annular structures, the second limiting surface 1130 includes two second limiting slots 115 which are spaced apart, the first locking portion 130 includes a first bottom wall 131 and two first side walls 132, the two first side walls 132 are arranged at both ends of the first bottom wall 131 in the length direction, and each first side wall 132 is inserted into the first limiting slot 125 and the corresponding second limiting slot 115.

[0083] The first protrusion 123 is configured as an annular structure, and the first protrusion 123 can surround the outer periphery of the second inner flow channel 121. The first recess 113 is configured as an annular structure, and the first protrusion 123 and the first recess 113 are inserted and matched to prevent relative rotation between the first joint 110 and the second joint 120. For example, the second limiting surface 1130 is provided with two second limiting grooves 115 arranged at intervals. The second limiting grooves 115 can be symmetrically arranged on the second limiting surface 1130, that is, the second limiting grooves 115 can be symmetrically arranged in the radial direction of the first recess 113, and the second limiting grooves 115 are in communication with the first limiting groove 125. The first locking portion 130 includes a first bottom wall 131 and two first side walls 132 arranged at both ends of the first bottom wall 131 in the length direction. Each first side wall 132 is inserted and matched with the first limiting groove 125 and the corresponding second limiting groove 115. The first limiting groove 125 can surround the outer surface of the first protrusion 123, that is, the first limiting surface 1230 of the first protrusion 123.

[0084] Specifically, each first side wall 132 is inserted and matched with the first limiting groove 125 and the corresponding second limiting groove 115. The insertion and matching of the plurality of first side walls 132 and the first limiting groove 125 can make the first locking portion 130 more firmly connect the first joint 110 and the second joint 120 together, improve the stability of the structure of the joint assembly 100, reduce the probability of leakage of the fluid medium, and prolong the service life of the joint assembly 100.

[0085] Please refer to Figures 1 to 8 In this embodiment, the joint assembly 100 further includes a first plate portion 140. The first plate portion 140 has a first mounting hole 141. The first mounting hole 141 is matched with the second end 124. The cross-sectional shape of the matching surface of the first mounting hole 141 and the second end 124 is non-circular along the extension direction of the first inner flow channel 111 or the second inner flow channel 121.

[0086] The joint assembly 100 further includes a first plate portion 140 for fixing the joint assembly 100. The first plate portion 140 has a first mounting hole 141. The first mounting hole 141 is matched with the second end 124. The second end 124 is provided with a limiting protrusion 150 protruding from the outer peripheral surface of the second inner flow channel 121. For example, along the axial direction of the second inner flow channel 121, one side of the first plate portion 140 abuts against the limiting protrusion 150, and the other side of the first plate portion 140 abuts against the first joint 110, so that the first plate portion 140 is limited on the joint assembly 100.

[0087] The cross-sectional shape of the mating surface of the first mounting hole 141 and the second end 124 is non-circular, which can prevent the first plate portion 140 from rotating relative to the first joint 110, and thus can make the joint assembly 100 more stably fixed to the region to be fixed.

[0088] The first plate portion 140 further includes a plurality of second mounting holes 142, which penetrate the first plate portion 140 along the thickness direction of the first plate portion 140, and are used to fix the first plate portion 140 to the region to be fixed, and thus fix the joint assembly 100 to the region to be fixed.

[0089] The projection of the first plate portion 140 along the extension direction of the second inner flow channel 121 is a pentagon.

[0090] Please refer to Figures 1 to 8 In this embodiment, the cross-sectional shape of the mating surface of the first mounting hole 141 and the second end 124 is polygonal.

[0091] The cross-sectional shape of the mating surface of the first mounting hole 141 and the second end 124 along the extension direction of the second inner flow channel 121 is polygonal, which can prevent the first plate portion 140 from rotating relative to the second joint 120, and thus can make the joint assembly 100 more stably fixed to the region to be fixed.

[0092] Moreover, the cross-sectional shape of the mating surface of the first mounting hole 141 and the second end 124 is polygonal, which is easier to manufacture and produce than non-circular curves, and thus can improve the production efficiency of the first plate portion 140, and thus reduce the production cost of the joint assembly 100.

[0093] In addition, the cross-sectional shape of the mating surface of the first mounting hole 141 and the second end 124 is polygonal, which can provide a certain resistance in all directions when the first plate portion 140 is subjected to a rotating force, and thus can make the joint assembly 100 more stable and reliable during use, reduce problems such as sealing failure and leakage caused by loosening or rotation, and improve the safety and stability of the joint assembly 100.

[0094] The cross-sectional shape of the mating surface of the first mounting hole 141 and the second end 124 can be triangular, quadrangular, pentagonal, hexagonal, heptagonal, octagonal, etc.

[0095] Please refer to Figures 1 to 8 In this embodiment, the first joint 110 and the second joint 120 respectively have a third end 116 and a fourth end 126 away from each other, and the outer peripheral surface of the fourth end 126 is provided with a first thread.

[0096] The first joint 110 has a third end 116, and the second joint 120 has a fourth end 126, the third end 116 and the fourth end 126 are away from each other. The first joint 110 is configured as a plastic part, and the second joint 120 is configured as a metal part. The second joint 120 is connected with the pipeline through the outer peripheral surface of the fourth end 126. Since the second joint 120 is screwed with the fourth end 126, the structural strength of the second joint 120 needs to be greater than that of the first joint 110, so as to improve the use stability and reliability of the second joint 120, and prolong the service life of the second joint 120.

[0097] Moreover, the outer peripheral surface of the fourth end 126 is provided with threads, and the second joint 120 is connected with the external pipeline through the threads. In this way, the external threads on the second joint 120 and the internal threads on the pipeline can be engaged with each other, and then force and torque can be transmitted through the screwing, so as to provide stable connection and reduce the probability of fluid medium leakage.

[0098] In addition, the outer peripheral surface of the fourth end 126 is provided with threads, and the screwing assembly method is relatively simple. The connection efficiency of the second joint 120 and the pipeline.

[0099] For example, the outer peripheral surface of the third end 116 of the first joint 110 is provided with a latch hole 117, and the third end 116 of the first joint 110 is connected with another pipeline through the latch.

[0100] In some embodiments, the first inner flow channel 111 is further provided with a third opening 111C, and the third opening 111C has the same direction as the first opening 111A, that is, the axis of the third opening 111C is parallel to the axis of the first opening 111A. The third opening 111C can be provided with a temperature sensor, so as to detect the temperature of the fluid medium flowing through the first inner flow channel 111. The temperature sensor can block the third opening 111C, so as to prevent the fluid medium from leaking from the third opening 111C.

[0101] In some embodiments, the first end 114 of the first joint 110 is further provided with a second protrusion 118, and the second end 124 of the second joint 120 is provided with a second groove 127. The second protrusion 118 is inserted and fitted into the second groove 127, and a first sealing ring 160 is arranged between the second protrusion 118 and the second groove 127. In this way, the fluid medium can be further prevented from flowing out of the joint assembly 100, and the sealing performance of the joint assembly 100 is improved.

[0102] It should also be noted that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. In the context of the specification, the term "and / or" means "and" or "or", and the term "or" means "and" or "or". In the context of the specification, the term "exemplary" means "example" or "an example of".

[0103] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0104] The above only describes the embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

[0105] Although the embodiments of the present application are described in conjunction with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A joint assembly, characterized by The first joint (110) has a first inner flow channel (111), and is configured as a plastic piece, and one end of the first joint (110) is provided with a first fitting part (112) along the extension direction of the first inner flow channel (111). The second joint (120) has a second inner flow channel (121), and is configured as a metal piece, and one end of the second joint (120) is provided with a second fitting part (122) along the extension direction of the second inner flow channel (121). The first fitting part (112) and the second fitting part (122) are inserted and fitted to communicate the first inner flow channel (111) and the second inner flow channel (121), and the cross-sectional shape of the fitting surface between the first fitting part (112) and the second fitting part (122) is non-circular along the extension direction of the first inner flow channel (111) or the second inner flow channel (121), so as to limit the relative rotation of the first joint (110) and the second joint (120). The cross-sectional shape of the fitting surface between the first fitting part (112) and the second fitting part (122) is polygonal.

2. The joint assembly of claim 1, wherein, The first inner flow channel (111) includes a first opening (111A) and a second opening (111B), the second opening (111B) communicates with the second inner flow channel (121), and the first opening (111A) is not opposite to the second opening (111B).

3. The joint assembly of claim 1, wherein, The first joint (110) and the second joint (120) respectively have first ends (114) and second ends (124) close to each other, the first fitting part (112) is configured as a first groove (113) provided at the first end (114), the second fitting part (122) is configured as a first protrusion (123) provided at the second end (124), and the first groove (113) and the first protrusion (123) are inserted and fitted.

4. The fitting assembly of claim 1, wherein, The joint assembly further includes a first locking part (130) detachably connecting the first end (114) and the second end (124) to limit the disengagement of the first joint (110) and the second joint (120) from each other.

5. The joint assembly of claim 4, wherein, The first protrusion (123) and the first groove (113) respectively have first limiting surfaces (1230) and second limiting surfaces (1130) abutting each other, and the first limiting surfaces (1230) and the second limiting surfaces (1130) are respectively provided with first limiting grooves (125) and second limiting grooves (115) facing each other, and the first locking part (130) is inserted and fitted in the first limiting grooves (125) and the second limiting grooves (115).

6. The joint assembly of claim 5, wherein, ​ 7. The joint assembly of claim 6, wherein, The first protrusion (123) and the first groove (113) are both configured as annular structures, the second limiting surface (1130) comprises two second limiting grooves (115) arranged at intervals, the first locking portion (130) comprises a first bottom wall (131) and two first side walls (132), the two first side walls (132) are arranged at two ends of the first bottom wall (131) in the length direction, and each first side wall (132) is inserted and matched with the first limiting groove (125) and the corresponding second limiting groove (115).

8. The joint assembly of claim 4, wherein, The joint assembly further comprises a first plate portion (140) having a first mounting hole (141) matched with the second end (124), and a cross-sectional shape of a matching surface of the first mounting hole (141) and the second end (124) in an extension direction of the first inner flow channel (111) or the second inner flow channel (121) is non-circular.

9. The joint assembly of claim 8, wherein, The cross-sectional shape of the matching surface of the first mounting hole (141) and the second end (124) is polygonal.

10. The fitting assembly of claim 1, wherein, The first joint (110) and the second joint (120) respectively have a third end (116) and a fourth end (126) away from each other, and an outer peripheral surface of the fourth end (126) is provided with a first thread.

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