Pipe fitting joint

Abstract

The invention provides a pipe fitting connector which comprises a first hoop piece, a second hoop piece and at least one connector branch pipe, and the first hoop piece and the second hoop piece are oppositely arranged between the first hoop piece and the second hoop piece to form a fastening cavity capable of containing a pipe fitting; wherein the at least one joint branch pipe is arranged on the first hoop piece and / or the second hoop piece, the at least one joint branch pipe is communicated with the fastening cavity, the first hoop piece is connected with the second hoop piece in a pivoting mode, and a pivoting connection structure is formed at one end of the first hoop piece and one end of the second hoop piece. The first hoop piece and the second hoop piece can rotate around the pivot connection structure, the other end of the first hoop piece and the other end of the second hoop piece can be fixed to further form a fastening structure, and the fastening structure can be used for fixing the first hoop piece and the second hoop piece.

Description

Technical Field

[0001] The present application relates to the technical field of pipe connection, in particular to tee and cross pipe joints. Background Art

[0002] In all kinds of complex piping systems, whether it is building water supply and drainage, HVAC, or material and fluid transportation in the industrial field, tee and cross pipe fittings play an extremely critical role. As key components connecting different pipelines, they can achieve multiple functions such as pipeline diversion, confluence, and change of fluid flow direction, thereby ensuring that the entire pipeline system operates efficiently and orderly according to the predetermined design requirements.

[0003] Existing tee and cross pipe fittings are usually designed by combining two half-installed structural parts. This design idea is mainly based on the convenience of the manufacturing process and the flexibility to meet different pipe connection requirements to a certain extent. For example, in actual installation scenarios, according to factors such as the pipe diameter, angle, and spatial layout to be connected, it is relatively convenient to select two suitable half-structure parts for splicing and combination to form a tee or cross pipe fitting that meets specific requirements.

[0004] During the installation process, the installation steps for the three-way and four-way pipe fittings, which are composed of two halves of the structural parts, are relatively complicated and time-consuming. Specifically, the two halves of the structural parts need to be accurately aligned and fitted together to ensure that the positions and angles of each interface are completely matched so that they can be seamlessly connected with the corresponding pipes. This process requires the operator to have a certain degree of care and patience, because even a slight deviation may cause problems in the subsequent installation, such as loose pipe connections and fluid leakage.

[0005] After completing the initial alignment and fitting, the next step is the key fastening process. Since fastening screws are used on both sides of the structural member for fixed installation, this means that the operator needs to perform a series of operations on the fastening screws on both sides respectively.

[0006] Taking one side as an example, the operator must first select fastening screws of appropriate specifications to ensure that the length, diameter and thread specifications of the screws match the pre-set screw holes on the structural parts. Then, insert the screws into the corresponding screw holes one by one. At this time, you also need to pay attention to the correct direction of the screw insertion, otherwise it may not be screwed in or the screw hole may be damaged. After the screw is inserted into the screw hole, you need to use the corresponding tools, such as a screwdriver or wrench, to tighten the screw according to the specified tightening torque. During this process, the operator needs to constantly adjust the tightening force to ensure that the screws can be tightened in place so that the two structural parts are tightly combined to prevent loosening during use, and to avoid problems such as damage to the screw hole or deformation of the structural parts due to over-tightening.

[0007] This is just the installation and tightening process of the fastening screws on one side. After completing one side, the same steps need to be repeated for the fastening screws on the other side. As you can imagine, the whole process not only takes a lot of time, but also requires high skills and concentration from the operator. If there is a problem with a screw during the installation process, such as it cannot be screwed in, the thread is slipped, or it is found that the position is not right after tightening, it needs to be readjusted, which will undoubtedly further increase the time cost and complexity of the installation.

[0008] The cumbersome installation method of the tee and cross pipe joints in the prior art brings many inconveniences. For example, at the installation site, the construction period is often tight, and the construction workers need to complete a large amount of pipe laying and pipe connection work within a limited time. The cumbersome installation method of the existing tee and cross pipe joints will extend the installation time of each pipe, thereby affecting the installation progress of the entire water supply and drainage system. Moreover, the construction site environment is usually more complicated, and there may be interference factors such as dust and debris, which will also increase the difficulty for operators to accurately install and tighten the fastening screws, making it more likely to make installation errors or require repeated adjustments.

[0009] In summary, the prior art tee and cross pipe joints use two half-installed structural parts and use fastening screws on both sides for fixing and installing. There are obvious disadvantages in the installation process, such as being cumbersome and time-consuming. It is urgent to improve it with a simpler and more efficient installation method. Summary of the invention

[0010] A major advantage of the present invention is to provide a pipe fitting joint, wherein the pipe fitting joint has a single-side fastening installation structure, which is convenient for installation and removal.

[0011] Another advantage of the present invention is that it provides a pipe fitting joint, wherein the pipe fitting includes a first hoop member, a second hoop member and at least one joint branch formed on the first hoop member and / or the second hoop member, wherein the first hoop member and the second hoop member are pivotally connected, and the pivot connection structure is a symmetrical structure to facilitate manufacturing and enable the pivot connection structure to only produce relative movement along the pivot direction to prevent lateral deviation.

[0012] Another advantage of the present invention is that it provides a pipe fitting joint, wherein the length of the proximal end of the branch pipe of the joint branch pipe of the pipe fitting adjacent to the pivotal end of the pipe fitting joint is shorter than the length of the distal end of the branch pipe away from the pivotal end, thereby facilitating the inner tube body of the branch pipe to dock with the pipe fitting interface of the pipe fitting in a pivotally inserted manner, which is beneficial to the sealing effect of the inner tube body of the branch pipe and the pipe fitting.

[0013] Another advantage of the present invention is that it provides a pipe fitting joint, wherein the joint branch pipe is provided with a notch groove, wherein one of the notch grooves corresponds to the proximal end adjacent to the pivot connection structure, and when the joint branch pipe of the pipe fitting joint is pivotally inserted into the pipe, the notch groove can avoid interference between the joint branch pipe and the pipe fitting interface, thereby helping to improve the installation effect.

[0014] Another advantage of the present invention is to provide a pipe joint, wherein the joint branch pipe has a simple structure and does not require a complex mechanical structure. Therefore, the present application provides a simple and effective solution.

[0015] According to one aspect of the present invention, a pipe fitting joint of the present invention that can achieve the above-mentioned objects and other objects and advantages includes:

[0016] a first hoop member;

[0017] A second hoop member, wherein the first hoop member and the second hoop member are arranged opposite to each other to form a fastening cavity between the first hoop member and the second hoop member for accommodating a pipe member; and

[0018] At least one joint branch pipe, wherein the at least one joint branch pipe is arranged on the first hoop member and / or the second hoop member, and the at least one joint branch pipe is communicated with the fastening cavity, wherein the first hoop member and the second hoop member are pivotally connected, and a pivot connection structure is formed at one end of the first hoop member and the second hoop member, and the first hoop member and the second hoop member can rotate around the pivot connection structure, wherein the other ends of the first hoop member and the second hoop member form a fastening structure for fastening the first hoop member and the second hoop member.

[0019] According to at least one embodiment of the present application, the first hoop member includes a first hoop member body, which is arranged at a first pivot end and a first fastening end of the first hoop member body; the second hoop member includes a second hoop member body, which is arranged at a second pivot end and a second fastening end of the second hoop member body, and the first pivot end and the second pivot end are pivotally connected to form the pivot connection structure.

[0020] According to at least one embodiment of the present application, the first pivot end includes a first hinge seat and a first hinge arm, and the second pivot end includes a second hinge seat and a second hinge arm, wherein the first hinge seat of the first pivot end corresponds to the second hinge arm of the second pivot end, and the first hinge arm of the first pivot end corresponds to the second hinge seat of the second pivot end.

[0021] According to at least one embodiment of the present application, the first pivot end and the second pivot end are symmetrical structures, the first hinge seat of the first pivot end has a semi-annular first seat groove, the first hinge arm of the first pivot end includes a first support wall and a first support shaft arranged on the first support wall; the second hinge seat of the second pivot end has a semi-annular second seat groove, the second hinge arm of the second pivot end includes a second support wall and a second support shaft arranged on the second support wall, wherein the first support shaft of the first pivot end can be buckled in the second seat groove of the second hinge seat of the second pivot end, and the second support shaft of the second pivot end can be buckled in the first seat groove of the first hinge seat of the first pivot end.

[0022] According to at least one embodiment of the present application, the first support shaft of the first pivot end and the second support shaft of the second pivot end are semi-cylindrical structures, and the first support shaft and the second support shaft are coaxial, that is, the first support shaft and the second support shaft rotate along the same central axis.

[0023] According to at least one embodiment of the present application, the joint branch pipe includes a branch pipe unit, wherein the at least one branch pipe unit is arranged on the first hoop member body of the first hoop body, and the branch pipe unit is connected to the pipe body to form a three-way structure.

[0024] According to at least one embodiment of the present application, the joint branch pipe further includes two branch pipe units, one of which is arranged on the first hoop body of the first hoop, and the other branch pipe unit is arranged on the second hoop body of the second hoop, forming a four-way structure.

[0025] According to at least one embodiment of the present application, the branch pipe unit includes a branch pipe outer pipe body and a branch pipe inner pipe body integrally extending from the branch pipe outer pipe body, wherein the branch pipe inner pipe body extends inward from the branch pipe outer pipe body and protrudes into the fastening cavity; the branch pipe inner pipe body further includes a branch pipe proximal end portion, a branch pipe distal end portion integrally extending from the branch pipe proximal end portion, and a notch groove formed at the branch pipe proximal end portion, wherein the branch pipe proximal end portion is closer to the pivot connection structure than the branch pipe distal end portion, and the notch groove is formed at the bottom of the branch pipe proximal end portion.

[0026] According to at least one embodiment of the present application, the branch pipe unit includes a branch pipe outer pipe body and a branch pipe inner pipe body integrally extending from the branch pipe outer pipe body, the branch pipe inner pipe body further includes a branch pipe proximal portion, a branch pipe distal portion integrally extending from the branch pipe proximal portion, wherein the branch pipe proximal portion is closer to the pivot connection structure than the branch pipe distal portion, wherein the height of the branch pipe proximal portion extending to the fastening cavity is less than the height of the branch pipe distal portion extending to the fastening cavity.

[0027] According to at least one embodiment of the present application, the pipe joint further includes at least one sealing member, wherein the sealing member is disposed between the joint branch pipe and the pipe.

[0028] Further objects and advantages of the present invention will be fully apparent from an understanding of the following description and the accompanying drawings.

[0029] These and other objects, features and advantages of the present invention will be more fully understood from the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0031] Figure 1 It is a schematic diagram of the overall structure of a pipe joint according to a first preferred embodiment of the present invention.

[0032] Figure 2 It is a schematic diagram of an exploded view of the pipe joint according to the first preferred embodiment of the present invention.

[0033] Figure 3 It is a three-dimensional cross-sectional view of the pipe joint according to the first preferred embodiment of the present invention.

[0034] Figure 4 It is a schematic diagram of the rotation state of the pipe joint according to the first preferred embodiment of the present invention.

[0035] Figure 5It is a structural schematic diagram of another optional implementation of the pipe joint according to the first preferred embodiment of the present invention.

[0036] Figure 6 It is a schematic diagram of the overall structure of a pipe joint according to a second preferred embodiment of the present invention.

[0037] Figure 7 It is a three-dimensional cross-sectional view of the pipe joint according to the second preferred embodiment of the present invention.

[0038] Figure 8 It is a schematic diagram of the overall structure of a pipe joint according to another optional implementation manner of the second preferred embodiment of the present invention.

[0039] Fig. 9 It is a schematic diagram of the overall structure of a pipe joint according to another optional implementation manner of the second preferred embodiment of the present invention.

[0040] Fig.10 It is a schematic diagram of the overall structure of a pipe joint according to another optional implementation manner of the second preferred embodiment of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings showing multiple embodiments of the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without spending creative work will fall within the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific implementation methods, and are not intended to limit this application; the terms "including", "comprising", "having", "having", "containing", "including", etc. in the specification and claims of this application and the above-mentioned figure description are open-ended words. Therefore, "including", "comprising", "having" and "having" are, for example, a method or device of one or more steps or elements, which has one or more steps or elements, but is not limited to having only these one or more elements. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "multiple" is two or more.

[0043] In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 should not be understood as a limitation on the present application.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0046] As mentioned above, it should be emphasized that when the term "includes / comprising" is used in this specification, it is used to clearly indicate the existence of the features, integers, steps or components, but does not exclude the existence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components. As used in this application, the singular forms "a", "an" and "the" also include plural forms, unless the context clearly indicates otherwise.

[0047] The words "a" and "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means plus or minus 10% of the mentioned value, or more specifically plus or minus 5%. The term "or" used in the claims means "and / or" unless it is clearly stated that it refers to only alternative solutions.

[0048] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0049] Referring to the drawings of this application specification Figures 1 to 5 As shown, a pipe joint according to the first preferred embodiment of the present application is explained in the following description. The pipe joint comprises a first hoop 10, a second hoop 20 and at least one joint branch 30, wherein the first hoop 10 and the second hoop 20 form a fastening cavity 100 for accommodating pipes, the at least one joint branch 30 is arranged in the first hoop 10 and / or the second hoop 20, wherein the pipe 200 to be connected is fastened in the fastening cavity 100 by the first hoop 10 and the second hoop 20, and the at least one joint branch 30 is connected with the pipe 200 to form a three-way pipe or a four-way pipe.

[0050] The pipe fitting 200 has at least one pipe fitting interface 210, wherein the pipe fitting interface 210 is formed on the side wall of the pipe fitting, and the joint branch pipe 30 is connected to the pipe fitting interface 210 of the pipe fitting 200, and forms a three-way or four-way pipe fitting with the pipe fitting 200. It is worth mentioning that the first hoop 10 and the second hoop 20 of the pipe fitting joint fix the pipe fitting 200 and keep the pipe fitting 200 connected to the joint branch pipe 30.

[0051] The first hoop member 10 and the second hoop member 20 are pivotally connected, and a pivot connection structure 300 is formed at one end of the first hoop member 10 and the second hoop member 20, and the first hoop member 10 and the second hoop member 20 can rotate relative to the axial direction of the pivot connection structure 300. The other ends of the first hoop member 10 and the second hoop member 20 can be fixed to further form a fastening structure 400. When the first hoop member 10 and the second hoop member 20 are connected, the first hoop member 10 and the second hoop member 20 are fixedly connected by the fastening structure 400. It is worth mentioning that in this preferred embodiment of the present application, the fastening structure 400 and the pivot connection structure 300 are arranged back to back on two opposite sides of the first hoop member 10 and the second hoop member 20.

[0052] It can be understood that one end of the first hoop member 10 and the second hoop member 20 are interconnected to form the pivot connection structure 300. When the pipe 200 is docked with the joint branch pipe 30, the user only needs to operate the fastening structure 400 on the other side of the pivot connection structure 300, that is, single-sided fixation can achieve installation and sealing.

[0053] It can be understood that, in this preferred embodiment of the present application, the first hoop member 10 and the second hoop member 20 form a main structure that wraps the pipe 200, wherein the pivoting connection structure 300 and the fastening structure 400 are located on opposite sides of the first hoop member 10 and the second hoop member 20. In other words, the pipe joint in this preferred embodiment of the present application is a single-side fixed device, and when the user uses the pipe joint to connect a tee or a cross, the pipe 200 to be connected is placed in the fastening cavity 100, and only needs to be fixed by the fastening structure 400 located on one side of the first hoop member 10 and the second hoop member 20.

[0054] The joint branch pipe 30 is communicated with the fastening cavity 100, wherein the joint branch pipe 30 is disposed in the first hoop member 10 and / or the second hoop member 20. It can be understood that if the joint branch pipe 30 is disposed in the first hoop member 10 or the second hoop member 20, the pipe joint is constructed as a three-way pipe fitting; if the joint branch pipe 30 is disposed in the first hoop member 10 and the second hoop member 20, the pipe joint is constructed as a four-way pipe fitting.

[0055] In this preferred embodiment of the present application, the pipe fitting 200 is fastened by the pipe fitting joint to form a three-way pipe fitting, wherein the first hoop member 10 includes a first hoop member body 11, which is arranged at a first pivot end 12 and a first fastening end 13 of the first hoop member body 11; the second hoop member 20 includes a second hoop member body 21, which is arranged at a second pivot end 22 and a second fastening end 23 of the second hoop member body 21, wherein the fastening cavity 100 is formed between the first hoop member body 11 and the second hoop member body 21, the first pivot end 12 and the second pivot end 22 are pivotally connected, the first fastening end 13 and the second fastening end 23 are arranged opposite to each other, and the first fastening end 13 and the second fastening end 23 can be opened and fixed.

[0056] The first pivot end 12 of the first hoop member 10 and the second pivot end 22 of the second hoop member 20 are connected to form the pivot connection structure 300, that is, the pivot connection structure 300 includes the first pivot end 12 of the first hoop member 10 and the second pivot end 22 of the second hoop member 20; wherein the pivot connection structure 300 forms a pivot, when the first fastening end 13 and the second fastening end 23 are opened, the first hoop member 10 and the second hoop member 20 can rotate around the pivot connection structure 300 formed by the first pivot end 12 and the second pivot end 22, so as to facilitate the installation and position adjustment of the pipe. The first fastening end 13 of the first hoop member 10 and the second fastening end 23 of the second hoop member 20 are arranged opposite to each other, and the first fastening end 13 and the second fastening end 23 can be fixed, that is, the fastening structure 400 includes the first fastening end 13 of the first hoop member 10 and the second fastening end 23 of the second hoop member 20.

[0057] Preferably, in a specific example of the present application, the pivot axis of the pivot connection structure 300 is parallel to the central axis of the fastening cavity 100 .

[0058] Preferably, the first hoop member body 11 of the first hoop member 10 and the second hoop member body 21 of the second hoop member 20 present a semi-annular structure.

[0059] As an example, in this preferred embodiment of the present application, the joint branch pipe 30 is provided on the first hoop member 10, and the joint branch pipe 30 is communicated with the pipe 200. Specifically, the joint branch pipe 30 of the pipe joint is provided on the first hoop member body 11 of the first hoop member 10, and the joint branch pipe 30 penetrates the first hoop member body 11. When installing and tightening the pipe 200, the first hoop member 10 is pivoted inwardly, wherein the joint branch pipe 30 rotates with the first hoop member 10 and is inserted from the pipe interface 210 of the pipe 200, so as to realize the communication between the joint branch pipe 30 and the pipe 200.

[0060] In the preferred embodiment of the present application, the joint branch pipe 30 includes a branch pipe unit 31, wherein the at least one branch pipe unit 31 is arranged in the first hoop body 10 or the second hoop body 20 to form a three-way pipe body structure. As an example, in a specific example of the present application, the branch pipe unit 31 of the joint branch pipe 30 is arranged in the first hoop body 11 of the first hoop body 10, and the branch pipe unit 31 is connected to the pipe body 200 to form a three-way structure.

[0061] Specifically, the branch pipe unit 31 of the joint branch pipe 30 further includes a branch pipe outer pipe body 311 and a branch pipe inner pipe body 312 extending integrally from the branch pipe outer pipe body 311, wherein the branch pipe outer pipe body 311 protrudes outward to the outside of the fastening cavity 100, suitable for connecting an external pipe fitting, and the branch pipe inner pipe body 312 extends inward from the branch pipe outer pipe body 311 and enters the fastening cavity 100, suitable for being connected to the pipe fitting interface 210 of the pipe fitting 200. The branch pipe outer pipe body 311 of the joint branch pipe 30 is used to connect an external pipe, such as a hose or a hard pipe, and the present application does not limit this.

[0062] It is worth mentioning that the branch pipe outer tube body 311 and the branch pipe inner tube body 312 of the joint branch pipe 30 are an integrated structure, wherein the branch pipe outer tube body 311 and the branch pipe inner tube body 312 of the joint branch pipe 30 form a branch pipe channel 310 that runs through the inside and outside of the first hoop 10.

[0063] Therefore, when installing and tightening the pipe 200 , the first hoop 10 is pivoted inward, and the branch pipe inner pipe body 312 of the joint branch pipe 30 is inserted into the pipe 200 from the pipe interface 210 of the pipe 200 .

[0064] In this preferred embodiment of the present application, the aperture of the pipe fitting interface 210 of the pipe fitting 200 is adapted to the outer diameter of the inner tube body 312 of the branch pipe of the joint branch pipe 30 so that the pipe fitting 200 is sealedly connected to the inner tube body 312 of the branch pipe of the joint branch pipe 30 .

[0065] It can be understood that when the first hoop member 10 is pivoted inward, the first hoop member 10 and the joint branch pipe 30 rotate around the rotation axis of the pivot connection structure 300 and are inserted into the pipe interface 210 of the pipe fitting 200 in a rotational manner, rather than being inserted into the pipe interface 210 of the pipe fitting 200 in a vertical insertion manner similar to the existing double-bolt pipe fitting joint.

[0066] Therefore, the portion of the branch pipe inner tube body 312 close to the first pivot end 12 is inserted into the tube interface 210 of the tube 200 before the portion close to the first fastening end 13, and the rotation radius of the portion of the branch pipe inner tube body 312 close to the first pivot end 12 is smaller than the rotation radius of the portion close to the first fastening end 13. It is understandable that the portion of the branch pipe inner tube body 312 close to the first pivot end 12 and the portion close to the first fastening end 13 are not inserted into the tube interface 210 of the tube 200 simultaneously.

[0067] The branch pipe inner tube body 312 further includes a branch pipe proximal portion 3121, a branch pipe distal portion 3122 integrally extending from the branch pipe proximal portion 3121, and a notch groove 3123 formed at the branch pipe proximal portion 3121, wherein the branch pipe proximal portion 3121 is closer to the pivot connection structure 300 than the branch pipe distal portion 3122, and the notch groove 3123 is formed at the bottom of the branch pipe proximal portion 3121, so that the height of the branch pipe proximal portion 3121 of the branch pipe inner tube body 312 is smaller than the height of the branch pipe distal portion 3122, so that the branch pipe inner tube body 312 can be conveniently connected to the pipe fitting interface 210 of the pipe fitting 200 by rotational insertion.

[0068] like Figure 3 As shown, the length (or height) of the proximal end portion 3121 of the branch pipe extending to the fastening cavity 100 is set to D1, and the length (or height) of the distal end portion 3122 of the branch pipe extending to the fastening cavity 100 is set to D2, wherein D1 is smaller than D2. When the inner tube body 312 of the branch pipe is connected with the pipe interface 210 of the pipe fitting 200 in a rotational insertion manner, the proximal end portion 3121 of the inner tube body 312 of the branch pipe can avoid squeezing or even damaging the pipe interface 210 of the pipe fitting 200, which can protect the pipe interface 210 of the pipe fitting 200 from deformation to a certain extent, thereby facilitating the sealing effect of the inner tube body 312 of the branch pipe and the pipe fitting 200.

[0069] In the preferred embodiment of the present application, the proximal end portion 3121 of the branch pipe is closer to the first pivot end 12 than the distal end portion 3122 of the branch pipe, and the distal end portion 3122 of the branch pipe is closer to the first fastening end 13 .

[0070] It is worth mentioning that in this preferred embodiment of the present application, the notch groove 3123 is formed at the proximal end portion 3121 of the branch tube close to the bottom of the pivot connection structure 300 .

[0071] It can be understood that in this preferred embodiment of the present application, when the first hoop member 10 is rotated inward, the notch groove 3123 located at the end of the proximal end portion 3121 of the branch pipe can prevent the proximal end portion 3121 of the branch pipe from interfering with the pipe interface 210 of the pipe fitting 200 during the rotation process, thereby preventing the proximal end portion 3121 of the branch pipe from affecting the pipe interface 210 of the pipe fitting 200 when the inner tube body 312 of the branch pipe is inserted into the pipe interface 210 of the pipe fitting 200, which is beneficial to improving the installation efficiency and the sealing effect after installation.

[0072] Preferably, in this preferred embodiment of the present application, the joint branch pipe 30 and the first hoop member body 11 of the first hoop member 10 are an integral structure.

[0073] The fastening structure 400 of the pipe joint further includes at least one fastener 40, wherein the fastener 40 is disposed at the first fastening end 13 of the first hoop member 10 and the second fastening end 23 of the second hoop member 20, and is used to fix the first hoop member 10 and the second hoop member 20. The fastener 40 may be, but is not limited to, a screw nut or a clamp.

[0074] The first pivot end 12 of the first hoop member 10 and the second pivot end 22 of the second hoop member 20 form the pivot connection structure 300 , wherein the pivot connection structure 300 is a detachable hinge structure.

[0075] like Figure 2 and Figure 4 As shown, the first pivot end 12 includes a first hinge seat 121 and a first hinge arm 122, and the second pivot end 22 includes a second hinge seat 221 and a second hinge arm 222, wherein the first hinge seat 121 of the first pivot end 12 corresponds to the second hinge arm 222 of the second pivot end 22, and the first hinge arm 122 of the first pivot end 12 corresponds to the second hinge seat 221 of the second pivot end 22. In this embodiment of the present invention, the first pivot end 12 and the second pivot end 22 of the pivot connection structure 300 are symmetrical structures.

[0076] When the first hoop member 10 and the second hoop member 20 are opened, when the first pivot end 12 of the first hoop member 10 and the second pivot end 22 of the second hoop member 20 rotate relative to each other to a certain extent, the first hinge arm 122 of the first pivot end 12 and the second hinge seat 221 of the second pivot end 22 are interlocked, and the first hinge seat 121 of the first pivot end 12 and the second hinge arm 222 of the second pivot end 22 are interlocked, thereby forming a hinge structure and allowing the first hoop member 10 and the second hoop member 20 to be rotatably connected by the pivot connection structure 300.

[0077] Specifically, the first hinge seat 121 of the first pivot end 12 has a semi-annular first seat groove 1210, and the first hinge arm 122 of the first pivot end 12 includes a first support wall 1221 and a first support shaft 1222 arranged on the first support wall 1221; the second hinge seat 221 of the second pivot end 22 has a semi-annular second seat groove 2210, and the second hinge arm 222 of the second pivot end 22 includes a second support wall 2221 and a second support shaft 2222 arranged on the second support wall 2221, wherein the first support shaft 1222 of the first pivot end 12 can be buckled in the second seat groove 2210 of the second hinge seat 221 of the second pivot end 22, and the second support shaft 2222 of the second pivot end 22 can be buckled in the first seat groove 1210 of the first hinge seat 121 of the first pivot end 12, so that the first pivot end 12 and the second pivot end 22 are buckled with each other to form a hinged structure that can rotate relatively.

[0078] It is worth mentioning that in this preferred embodiment of the present application, the first support shaft 1222 of the first pivot end 12 and the second support shaft 2222 of the second pivot end 22 are semi-cylindrical structures, and the first support shaft 1222 and the second support shaft 2222 are coaxial, that is, the first support shaft 1222 and the second support shaft 2222 rotate along the same central axis. It is worth mentioning that the opening direction of the first seat groove 1210 of the first hinge seat 121 is opposite to the opening direction of the second seat groove 2210 of the second hinge seat 221, and the arc surface of the first support shaft 1222 and the arc surface of the second support shaft 2222 have opposite curvature directions.

[0079] It can be understood that, after the first pivot end 12 and the second pivot end 22 are hinged, the first hoop member 10 and the second hoop member 20 are allowed to rotate along the central axis of the pivot connection structure so as to install and fix the pipe.

[0080] A first spacing groove 123 is provided between the first hinge arm 122 of the first pivot end 12 and the first hinge seat 121; a second spacing groove 223 is provided between the second hinge arm 222 of the second pivot end 22 and the second hinge seat 221, wherein the first hinge arm 122 of the first pivot end 12 is located in the second spacing groove 223 of the second pivot end 22, and the second hinge arm 222 of the second pivot end 22 is located in the first spacing groove 123 of the first pivot end 21, so that the first pivot end 12 and the second pivot end 22 interfere with each other in the axial direction, thereby preventing the first pivot end 12 and the second pivot end 22 from moving in the axial direction.

[0081] Optionally, in another optional embodiment of the present application, the first hinge arm 122 and the first hinge seat 121 of the first pivot end 12 are clamped in the second spacing groove thereof by the second pivot end 22; or the second hinge arm 222 and the second hinge seat 221 of the second pivot end 22 are clamped in the first spacing groove of the first pivot end 12, so that the first pivot end 12 and the second pivot end 22 interfere with each other in the axial direction to prevent movement.

[0082] It can be understood that when the first pivot end 12 and the second pivot end 22 are buckled with each other, the first pivot end 12 and the second pivot end 22 form the pivot connection structure 300, allowing the first hoop member 10 and the second hoop member 20 to rotate around their axial directions, and the horizontal movement of the first pivot end 12 and the second pivot end 22 along their axial directions is restricted.

[0083] like Figure 3 As shown, the pipe joint may further include at least one sealing member 50 , wherein the sealing member 50 is disposed between the joint branch pipe 30 and the pipe 200 to improve the sealing effect between the pipe 200 and the joint branch pipe 30 .

[0084] Correspondingly, the first hoop body 11 of the joint branch pipe 30 is further provided with a sealing groove 110, wherein the sealing groove 110 surrounds the outer side of the joint branch pipe 30, and the sealing member 50 is arranged in the sealing groove 110 of the first hoop body 11. As an example, in a specific example of the present application, the sealing member 50 is implemented as a bee glue strip or a sealing ring.

[0085] The joint branch pipe 30 is further provided with a connection structure 301 for connecting an external pipe. In the preferred embodiment of the present application, the connection structure 301 is implemented as an annular groove or an annular protrusion formed on the outer side of the branch pipe outer tube body 311 of the joint branch pipe 30.

[0086] like Figure 5 As shown, another optional implementation of the pipe fitting joint of the first preferred embodiment of the present application is different from the first preferred embodiment described above in the structure of the joint branch pipe 30. Specifically, the joint branch pipe 30 includes a branch pipe outer tube body 311 and a branch pipe inner tube body 312 extending integrally from the branch pipe outer tube body 311, wherein the branch pipe outer tube body 311 protrudes outwardly to the outside of the fastening cavity 100, suitable for connecting an external pipe fitting, and the branch pipe inner tube body 312 extends inwardly from the branch pipe outer tube body 311 and protrudes to the fastening cavity 100, suitable for being connected to the pipe fitting interface 210 of the pipe fitting 200.

[0087] The branch pipe inner tube body 312 further includes a branch pipe proximal portion 3121 and a branch pipe distal portion 3122 integrally extending from the branch pipe proximal portion 3121, wherein the branch pipe proximal portion 3121 is closer to the pivot connection structure 300 than the branch pipe distal portion 3122, and the branch pipe proximal portion 3121 and the branch pipe distal portion 3122 of the branch pipe inner tube body 312 are symmetrically arranged. That is, in this preferred embodiment of the present application, it is a three-way structure, and the branch pipe inner tube body 312 is different from the above preferred embodiment in that a notch groove is not provided, so that the height D1 of the branch pipe proximal portion 3121 and the height D2 of the branch pipe distal portion 3122 are the same.

[0088] During the process of installing and fixing the pipe fitting 200, the pipe fitting interface 210 of the pipe fitting 200 can be first installed corresponding to the branch pipe inner tube body 312 of the joint branch pipe 30, that is, the branch pipe inner tube body 312 is inserted into the pipe fitting interface 210 of the pipe fitting 200, and then the first hoop 10 and the second hoop 20 are fixedly connected by the fastening structure 400, thereby realizing single-sided fixation.

[0089] Referring to the drawings of this application specification Figure 6 and Figure 7 As shown, a pipe fitting joint according to the second preferred embodiment of the present application is explained in the following description. The pipe fitting joint comprises a first hoop 10, a second hoop 20 and at least one joint branch pipe 30, wherein the first hoop 10 and the second hoop 20 form a fastening cavity 100 for accommodating pipe fittings, the at least one joint branch pipe 30 is arranged in the first hoop 10 and / or the second hoop 20, wherein the pipe fitting 200 to be connected is fastened in the fastening cavity 100 by the first hoop 10 and the second hoop 20, and the at least one joint branch pipe 30 is connected with the pipe fitting 200 to form a three-way pipe fitting or a four-way pipe fitting.

[0090] Similar to the above preferred embodiment, in this preferred embodiment of the present application, the first hoop member 10 and the second hoop member 20 are pivotally connected, and a pivot connection structure 300 is formed at one end of the first hoop member 10 and the second hoop member 20, and the first hoop member 10 and the second hoop member 20 can rotate relative to each other along the axial direction of the pivot connection structure 300. The other ends of the first hoop member 10 and the second hoop member 20 can be fixed to further form a fastening structure 400. When the first hoop member 10 and the second hoop member 20 are connected, the first hoop member 10 and the second hoop member 20 are fixedly connected by the fastening structure 400. The specific structures of the pivot connection structure 300 and the fastening structure 400 are the same as those of the above preferred embodiment, and are not described in detail.

[0091] The difference from the above-mentioned first preferred embodiment is that the two joint branches 30 of the pipe joint of this preferred embodiment of the present application are respectively arranged on the first hoop 10 and the second hoop 20, that is, the pipe joint is a four-way pipe fitting.

[0092] Specifically, the joint branch pipe 30 further includes two branch pipe units 31, one of which is provided at the first hoop member body 11 of the first hoop member 10, and the branch pipe unit 31 penetrates the first hoop member body 11; the other branch pipe unit 31 is provided at the second hoop member body 21 of the second hoop member 20, and the branch pipe unit 31 penetrates the second hoop member body 21. When installing and fastening the pipe 200, the first hoop member 10 and the second hoop member 20 are pivoted inwardly, wherein the two branch pipe units 31 are inserted from the pipe interface 210 of the pipe 200, so as to realize the communication between the joint branch pipe 30 and the pipe 200.

[0093] The branch pipe unit 31 of the joint branch pipe 30 further includes a branch pipe outer body 311 and a branch pipe inner body 312 extending integrally from the branch pipe outer body 311, wherein the branch pipe outer body 311 protrudes outward to the outside of the fastening cavity 100, suitable for connecting to an external pipe fitting, and the branch pipe inner body 312 extends inward from the branch pipe outer body 311 and protrudes to the fastening cavity 100, suitable for being connected to the pipe fitting interface 210 of the pipe fitting 200. The branch pipe outer body 311 of the joint branch pipe 30 is used to connect to an external pipe, such as a hose or a hard pipe, and the present application does not limit this.

[0094] It is worth mentioning that the branch pipe outer tube body 311 and the branch pipe inner tube body 312 of the joint branch pipe 30 are an integrated structure, wherein the branch pipe outer tube body 311 and the branch pipe inner tube body 312 of the joint branch pipe 30 form a branch pipe channel 310 that runs through the inside and outside of the first hoop 10.

[0095] Therefore, when installing and tightening the pipe 200 , the first hoop 10 is pivoted inward, and the branch pipe inner pipe body 312 of the joint branch pipe 30 is inserted into the pipe 200 from the pipe interface 210 of the pipe 200 .

[0096] It is worth mentioning that in this preferred embodiment of the present application, the branch pipe inner tube body 312 of the branch pipe unit 31 on at least one side further includes a branch pipe proximal portion 3121, a branch pipe distal portion 3122 integrally extending from the branch pipe proximal portion 3121, and a notch groove 3123 formed at the branch pipe proximal portion 3121, wherein the branch pipe proximal portion 3121 is closer to the pivot connection structure 300 than the branch pipe distal portion 3122, and the notch groove 3123 is formed at the bottom of the branch pipe proximal portion 3121, so that the height of the branch pipe proximal portion 3121 of the branch pipe inner tube body 312 is smaller than the height of the branch pipe distal portion 3122, so that the branch pipe inner tube body 312 is convenient for the branch pipe inner tube body 312 to be connected with the pipe fitting interface 210 of the pipe fitting 200 in a rotational insertion manner.

[0097] like Figure 7 As shown, the length (or height) of the proximal end portion 3121 of the branch pipe extending to the fastening cavity 100 is set to D1, and the length (or height) of the distal end portion 3122 of the branch pipe extending to the fastening cavity 100 is set to D2, wherein D1 is smaller than D2. When the inner tube body 312 of the branch pipe is connected with the pipe interface 210 of the pipe fitting 200 in a pivoting insertion manner, the proximal end portion 3121 of the inner tube body 312 of the branch pipe can avoid squeezing or even damaging the pipe interface 210 of the pipe fitting 200, which can protect the pipe interface 210 of the pipe fitting 200 from deformation to a certain extent, thereby facilitating the sealing effect of the inner tube body 312 of the branch pipe and the pipe fitting 200.

[0098] In the preferred embodiment of the present application, the proximal end portion 3121 of the branch pipe is closer to the first pivot end 12 than the distal end portion 3122 of the branch pipe, and the distal end portion 3122 of the branch pipe is closer to the first fastening end 13 .

[0099] It is worth mentioning that in this preferred embodiment of the present application, the notch groove 3123 is formed at the proximal end portion 3121 of the branch tube close to the bottom of the pivot connection structure 300 .

[0100] It can be understood that in this preferred embodiment of the present application, when the first hoop member 10 is pivoted inward, the notch groove 3123 located at the end of the proximal end portion 3121 of the branch pipe can prevent the proximal end portion 3121 of the branch pipe from interfering with the pipe interface 210 of the pipe fitting 200 during the rotation process, thereby preventing the proximal end portion 3121 of the branch pipe from affecting the pipe interface 210 of the pipe fitting 200 when the inner tube body 312 of the branch pipe is inserted into the pipe interface 210 of the pipe fitting 200, which is beneficial to improving the installation efficiency and the sealing effect after installation.

[0101] Preferably, the two branch pipe units 31 of the joint branch pipe 30 are symmetrically arranged on the first hoop member 10 and the second hoop member 20. It can be understood that if the branch pipe inner tube body 312 of the two branch pipe units 31 does not form a height difference between the two ends, after the branch pipe inner tube body 312 of the branch pipe unit 31 on one side is installed into the corresponding pipe interface 210, the branch pipe inner tube body 312 of the branch pipe unit 31 on the other side will be blocked by the surface near the pipe interface 210 of the pipe 20 and cannot enter the corresponding pipe interface 210. Therefore, in this embodiment, the two ends of the branch pipe inner tube body 312 of the two branch pipe units 31 have a height difference. Specifically, the height of the branch pipe proximal end 3121 of the branch pipe inner tube body 312 adjacent to the pivot end is less than the height of the branch pipe distal end 3122 away from the pivot end.

[0102] like Figure 8 As shown, in another optional embodiment of the present application, the branch pipe inner tube body 312 of the branch pipe unit 31 on at least one side further includes a branch pipe proximal portion 3121 and a branch pipe distal portion 3122 integrally extending from the branch pipe proximal portion 3121, wherein the branch pipe proximal portion 3121 is adjacent to the pivot connection structure 300 compared to the branch pipe distal portion 3122, and the branch pipe proximal portion 3121 and the branch pipe distal portion 3122 of the branch pipe inner tube body 312 are symmetrically arranged. That is, in this preferred embodiment of the present application, the branch pipe inner tube body 312 is different from the above preferred embodiment in that a notch groove is not provided, so that the height D1 of the branch pipe proximal portion 3121 and the height D2 of the branch pipe distal portion 3122 are the same.

[0103] During the process of installing and fixing the pipe fitting 200, the pipe fitting interface 210 of the pipe fitting 200 can be first installed corresponding to the branch pipe inner tube body 312 of the joint branch pipe 30, that is, the branch pipe inner tube body 312 is vertically inserted into the pipe fitting interface 210 of the pipe fitting 200, and then the first hoop 10 and the second hoop 20 are fixedly connected by the fastening structure 400, thereby achieving single-sided fixation.

[0104] like Fig. 9 and Fig.10 The figure shows another optional implementation of the joint branch pipe of the second preferred embodiment of the present application, wherein in this preferred embodiment of the present application, the pipe joint includes a first hoop 10, a second hoop 20 and at least one joint branch pipe 30, wherein the first hoop 10 and the second hoop 20 form a fastening cavity 100 for accommodating the pipe, and the at least one joint branch pipe 30 is arranged in the first hoop 10 and / or the second hoop 20, wherein the pipe 200 to be connected is fastened in the fastening cavity 100 by the first hoop 10 and the second hoop 20, and the at least one joint branch pipe 30 is connected to the pipe 200 to form a three-way pipe fitting or a four-way pipe fitting.

[0105] Similar to the above preferred embodiment, in this preferred embodiment of the present application, the first hoop member 10 and the second hoop member 20 are pivotally connected, and a pivot connection structure 300 is formed at one end of the first hoop member 10 and the second hoop member 20, and the first hoop member 10 and the second hoop member 20 can rotate relative to each other along the axial direction of the pivot connection structure 300. The other ends of the first hoop member 10 and the second hoop member 20 can be fixed to further form a fastening structure 400. When the first hoop member 10 and the second hoop member 20 are connected, the first hoop member 10 and the second hoop member 20 are fixedly connected by the fastening structure 400. The specific structures of the pivot connection structure 300 and the fastening structure 400 are the same as those of the above preferred embodiment, and are not described in detail.

[0106] The difference from the first preferred embodiment is that the joint branch pipe 30 of the pipe joint of this preferred embodiment of the present application is arranged on the first hoop 10 and the second hoop 20, that is, the pipe joint is a four-way pipe.

[0107] It is worth mentioning that in this preferred embodiment of the present application, the branch pipe inner tube body 312 of the branch pipe unit 31 on at least one side further includes a branch pipe proximal portion 3121, a branch pipe distal portion 3122 integrally extending from the branch pipe proximal portion 3121, and a notch groove 3123 formed at the branch pipe proximal portion 3121, wherein the branch pipe proximal portion 3121 is closer to the pivot connection structure 300 than the branch pipe distal portion 3122, and the notch groove 3123 is formed at the bottom of the branch pipe proximal portion 3121, so that the height of the branch pipe proximal portion 3121 of the branch pipe inner tube body 312 is smaller than the height of the branch pipe distal portion 3122, so that the branch pipe inner tube body 312 is convenient for the branch pipe inner tube body 312 to be connected with the pipe fitting interface 210 of the pipe fitting 200 in a rotational insertion manner.

[0108] Optionally, in another optional embodiment of the present application, the branch pipe inner tube body 312 of the branch pipe unit 31 on at least one side further includes a branch pipe proximal portion 3121 and a branch pipe distal portion 3122 extending integrally from the branch pipe proximal portion 3121, wherein the branch pipe proximal portion 3121 is adjacent to the pivot connection structure 300 compared to the branch pipe distal portion 3122, and the branch pipe proximal portion 3121 and the branch pipe distal portion 3122 of the branch pipe inner tube body 312 are symmetrically arranged. That is, in this preferred embodiment of the present application, the branch pipe inner tube body 312 is different from the above preferred embodiment in that a notch groove is not provided, so that the height D1 of the branch pipe proximal portion 3121 and the height D2 of the branch pipe distal portion 3122 are the same.

[0109] The difference from the above-mentioned preferred embodiment lies in the joint branch pipe 30, wherein the joint branch pipe 30 is further provided with a mounting groove 320, wherein the mounting groove 320 is formed on the inner side of the joint branch pipe 30, and the mounting groove 320 of the joint branch pipe 30 is suitable for aligning with the pipe fitting 200 to be installed, that is, the pipe fitting 200 is installed in the mounting groove 320 of the joint branch pipe 30.

[0110] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A pipe joint, characterized in that: include: a first hoop member; A second hoop member, wherein the first hoop member and the second hoop member are arranged opposite to each other to form a fastening cavity for accommodating a pipe member therebetween; as well as At least one joint branch pipe, wherein the at least one joint branch pipe is arranged on the first hoop member and / or the second hoop member, and the at least one joint branch pipe is communicated with the fastening cavity, wherein the first hoop member and the second hoop member are pivotally connected, and a pivot connection structure is formed at one end of the first hoop member and the second hoop member, and the first hoop member and the second hoop member can rotate around the pivot connection structure, wherein the other ends of the first hoop member and the second hoop member form a fastening structure for fastening the first hoop member and the second hoop member.

2. The pipe fitting joint according to claim 1, wherein the first hoop member includes a first hoop member body, which is arranged at a first pivot end and a first fastening end of the first hoop member body; the second hoop member includes a second hoop member body, which is arranged at a second pivot end and a second fastening end of the second hoop member body, and the first pivot end and the second pivot end are pivotally connected to form the pivot connection structure.

3. The pipe fitting according to claim 2, wherein the first pivot end includes a first hinge seat and a first hinge arm, and the second pivot end includes a second hinge seat and a second hinge arm, wherein the first hinge seat of the first pivot end corresponds to the second hinge arm of the second pivot end, and the first hinge arm of the first pivot end corresponds to the second hinge seat of the second pivot end.

4. The pipe fitting joint according to claim 3, wherein the first pivot end and the second pivot end are symmetrical structures, the first hinge seat of the first pivot end has a semi-annular first seat groove, the first hinge arm of the first pivot end includes a first support wall and a first support shaft arranged on the first support wall; the second hinge seat of the second pivot end has a semi-annular second seat groove, the second hinge arm of the second pivot end includes a second support wall and a second support shaft arranged on the second support wall, wherein the first support shaft of the first pivot end can be buckled in the second seat groove of the second hinge seat of the second pivot end, and the second support shaft of the second pivot end can be buckled in the first seat groove of the first hinge seat of the first pivot end.

5. The pipe fitting according to claim 4, wherein the first support shaft of the first pivot end and the second support shaft of the second pivot end are semi-cylindrical structures, and the first support shaft and the second support shaft are coaxial, that is, the first support shaft and the second support shaft rotate along the same central axis.

6. The pipe fitting according to any one of claims 1 to 4, wherein the fitting branch pipe comprises a branch pipe unit, wherein the at least one branch pipe unit is arranged on the first hoop body of the first hoop body, and the branch pipe unit is connected with the pipe body to form a three-way structure.

7. A pipe fitting according to any one of claims 1 to 4, wherein the fitting branch pipe further includes two branch pipe units, one of the branch pipe units is arranged on the first hoop body of the first hoop, and the other branch pipe unit is arranged on the second hoop body of the second hoop, forming a four-way structure.

8. The pipe fitting according to claim 7, wherein the branch pipe unit comprises a branch pipe outer pipe body and a branch pipe inner pipe body integrally extending from the branch pipe outer pipe body, wherein the branch pipe inner pipe body extends inward from the branch pipe outer pipe body and protrudes into the fastening cavity; the branch pipe inner pipe body further comprises a branch pipe proximal end portion, a branch pipe distal end portion integrally extending from the branch pipe proximal end portion, and a notch groove formed at the branch pipe proximal end portion, wherein the branch pipe proximal end portion is closer to the pivot connection structure than the branch pipe distal end portion, and the notch groove is formed at the bottom of the branch pipe proximal end portion.

9. The pipe fitting according to claim 7, wherein the branch pipe unit comprises a branch pipe outer pipe body and a branch pipe inner pipe body integrally extending from the branch pipe outer pipe body, the branch pipe inner pipe body further comprises a branch pipe proximal portion, a branch pipe distal portion integrally extending from the branch pipe proximal portion, wherein the branch pipe proximal portion is closer to the pivot connection structure than the branch pipe distal portion, wherein the height of the branch pipe proximal portion extending to the fastening cavity is less than the height of the branch pipe distal portion extending to the fastening cavity.

10. The pipe structure according to any one of claims 1 to 4, wherein the pipe joint further comprises at least one sealing member, wherein the sealing member is disposed between the joint branch pipe and the pipe.

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