Pipe joint facilitating threading

Abstract

The application relates to the technical field of pipe joint connection, in particular to a pipe joint convenient for threading, which comprises a joint body, the joint body is provided with a first interface and a second interface which are in communication with each other, the joint body is provided with a work window on an outer side wall, the joint body is detachably connected with a flip cover used for closing the work window and a locking mechanism used for fixing the flip cover. The application has the effects of improving the problem of narrow operation space in a pipe system and improving the convenience of threading and overhauling a line.

Description

Technical Field

[0001] This application relates to the technical field of pipe fittings, and in particular to a pipe connector that facilitates wire threading. Background Technology

[0002] In the fields of construction, decoration, and communications, it is often necessary to run electrical wires, network cables, fiber optic cables, and other lines through pre-buried conduits (such as PVC pipes and metal pipes). Straight connectors, elbows, tees, and other pipe fittings are mostly one-piece enclosed structures.

[0003] In related technologies, due to the relatively small internal space of pipelines, when performing wire threading operations, especially when encountering pipe bends or long lines, the wire end can easily get stuck against the inner wall of the pipe bend and become obstructed, making wire threading difficult. Operators usually need to pull hard from both ends of the pipe, use a wire threader, or place a guide rope inside the pipe beforehand to successfully thread the wire.

[0004] Regarding the aforementioned technologies, pulling on the wiring can easily abrade the wiring sheath and even damage the wiring. Using a wire threader or pre-installing guide ropes inside the conduit is inefficient, and this method cannot be used for existing conduit systems without pre-installed guide ropes. Utility Model Content

[0005] To address the issue of limited operating space within pipeline systems and improve the convenience of wiring and maintenance, this application provides a pipe connector that facilitates wiring.

[0006] The pipe connector for easy wire threading provided in this application adopts the following technical solution: A pipe connector for easy wire threading includes a connector body, the connector body having a first interface and a second interface that are interconnected, the connector body having a working window on its outer side wall, and the connector body being detachably connected to a flip cover for closing the working window and a locking mechanism for fixing the flip cover.

[0007] By adopting the above technical solution, the pipe connector, with its openable working window and detachable flip-top on the outer wall, effectively expands the operable space inside the pipeline system. When the cable encounters obstruction at bends or other points during threading operations, the operator can open the flip-top and directly observe the internal situation through the working window. They can then use their hands or tools to locally pull, adjust the cable direction, or remove obstructions, thereby reducing the difficulty of threading and avoiding cable wear and damage caused by pulling long distances from both ends of the pipe. This improves the efficiency and safety of threading operations. It is not only suitable for newly built pipeline systems but also provides an efficient solution for threading and subsequent maintenance and replacement of existing pipelines without pre-installed guide ropes. After the operation is completed, the flip-top can be securely closed by the locking mechanism, restoring the structural integrity, sealing, and mechanical protection performance of the connector, ensuring its long-term reliable use in various environments.

[0008] Furthermore, the operation window is located on the outer wall of the side where the second interface is located.

[0009] By adopting the above technical solution, the operation window is opened on the outer wall of the bend where blockage is most likely to occur, intervening in the bottleneck area of ​​the cable threading operation. When the line gets stuck at the bend due to a sudden change in direction, the operator can directly open the operation window at the obstruction point to reach the cable end with the shortest path for observation, correction or pulling, improving the accuracy of operation and the efficiency of troubleshooting, avoiding blind long-distance pulling, and protecting the cable insulation layer.

[0010] Furthermore, the inner diameter of the flip cover matches the inner diameter of the connector body.

[0011] By adopting the above technical solution, the inner diameter of the flip cover matches the inner diameter of the connector body, ensuring the continuity and smoothness of the internal pipeline channel after the operating window is closed. The inner wall of the flip cover and the original inner wall of the pipeline together form a complete, stepless flow section, allowing the pipeline to pass through smoothly and without obstruction, avoiding secondary blockage, scratching, or wear caused by internal steps or protrusions, and protecting the integrity of the pipeline insulation layer. The matching inner diameter allows the flip cover to better integrate with the connector body as a whole after closing and locking, improving the overall structural strength and pressure resistance, and ensuring the long-term stability and safety of the pipeline system.

[0012] Furthermore, the outer wall of the connector body is symmetrically arranged with protective wing plates along the tangential direction on both sides of the working window, and the flip cover is located between the two protective wing plates.

[0013] By adopting the above technical solution, tangential protective wing plates are symmetrically installed on both sides of the working window, enhancing the local structural rigidity and deformation resistance of the working window area. The symmetrical tangential arrangement conforms to the stress characteristics of the bend, evenly distributing and transferring stress, and avoiding stress concentration. The two protective wing plates form a natural guide and protection groove, accommodating the flip cover and its locking mechanism, providing guidance and positioning for the opening and closing movement of the flip cover, facilitating installation and alignment, and providing side protection for the flip cover, preventing damage from accidental lateral impacts during transportation, installation, or use.

[0014] Furthermore, the locking mechanism includes a first connecting ear fixedly connected to both sides of the flip cover, a second connecting ear fixedly connected to both sides of the connector body, and a connecting pin for passing through and connecting the first connecting ear and the second connecting ear; The second connecting ear is located on the outer wall of the connector body on the side where the second interface is located and is close to the end of the connector body. The tangent direction of the second connecting ear is perpendicular to the outer wall of the connector body. The first connecting ear is located on both sides of the flip cover and corresponds vertically to the position of the second connecting ear.

[0015] By adopting the above technical solution, the second connecting ear is arranged in a high-rigidity area near the outer wall of the connector body end and perpendicular to the tangent of the wall surface, providing a stable force base for the locking mechanism, bearing the locking force generated when the flap closes, and preventing local deformation of the connector wall. The precise vertical alignment of the first and second connecting ears ensures that the connecting pin mainly bears shear force after insertion, resulting in a simple and direct force distribution mode and improving the reliability and stability of the connection. The connecting pin (such as a bolt) enables the flap to be detachably fastened, ensuring that the flap can be firmly pressed against the working window. Through the tight fit between surfaces, basic dustproof and protective functions are achieved.

[0016] Furthermore, the first connecting ear has a through hole for the connecting pin to pass through, and the second connecting ear has a threaded hole that mates with the connecting pin.

[0017] By adopting the above technical solution, a through hole on one side and a threaded hole on the other side form a mechanism for quick alignment and fastening. During operation, the connecting pin (such as a bolt) is passed sequentially through the through hole of the first connecting lug and screwed into the threaded hole of the second connecting lug to complete the fastening. The through hole provides necessary tolerance, allowing for smooth insertion of the pin even with slight misalignment, reducing assembly difficulty. The threaded hole enables fastening with a single part (bolt), eliminating the need for an additional nut on the other side, simplifying the operation and avoiding the hassle of aligning both the bolt and nut simultaneously in a confined space. This makes opening and closing the side cover during wiring and maintenance faster and easier. Simultaneously, the threaded connection provides a stable and reliable locking force, preventing the connecting pin from loosening under vibration through the self-locking characteristics of the thread, ensuring the stability of the flip cover in the closed state, and guaranteeing the basic protective function of the connector.

[0018] Furthermore, the flip cover has a snap-fit ​​protrusion on the side away from the first connecting ear for snapping and fixing with the connector body, and the connector body has a snap-fit ​​through groove on the side wall for the snap-fit ​​protrusion to be inserted.

[0019] By adopting the above technical solution, the engagement of the snap-fit ​​protrusion and the snap-fit ​​slot constitutes a preliminary fixing mechanism. When closing the flip cover, the side with the snap-fit ​​protrusion can be aligned and inserted into the snap-fit ​​slot first. The guiding nature of the structure completes the initial snap-fit ​​fixing, enabling quick alignment that can be operated with one hand. This prevents the flip cover from shifting during subsequent tightening operations and provides a stable foundation for installing the connecting pin on the other side's connecting ear, simplifying the assembly process and improving efficiency. The snap-fit ​​structure provides an additional connection point before the locking mechanism applies the main tightening force, enhancing the flip cover's resistance to vibration and accidental opening, and improving the reliability of the closed state.

[0020] Furthermore, the width of the snap-fit ​​groove is greater than the thickness of the snap-fit ​​protrusion, thus leaving an movable gap between the groove and the outer wall of the snap-fit ​​protrusion.

[0021] By adopting the above technical solution, a movable gap is set between the snap-fit ​​groove and the snap-fit ​​protrusion, providing necessary tolerance and adjustment space for the closing and locking process of the flip cover. During maintenance or wiring, only one side of the locking mechanism needs to be opened; the flip cover can then be lifted upwards at an angle using the snap-fit ​​protrusion as an axis. The movable gap provides the necessary physical space and rotational freedom for the flipping action, allowing the flip cover to be opened like a small window, thus exposing the work window for operation. This eliminates the need for completely removing and reinstalling the flip cover, improving work efficiency and making it suitable for maintenance scenarios. It avoids potential problems such as loss, bumps, or contamination that may occur after the flip cover is completely detached, making the operation process more controllable and safer. The flip cover is always connected to the main body via the snap-fit ​​protrusion, reducing the difficulty and risk of operation in high-altitude, narrow, or dimly lit environments.

[0022] Furthermore, the outer wall of the connector body is provided with an external thread for connecting the pipe fitting at the end where the first interface is located.

[0023] By adopting the above technical solution, an external thread is provided at the first interface end of the connector body, offering a standardized, versatile, and reliable pipe interface method. The external thread structure allows the connector to be quickly and easily screwed into widely used internally threaded pipe fittings, lock nuts, or threaded junction boxes, expanding the product's applicability and compatibility. No additional adapters or complex installation tools are required, enabling immediate use and improving installation efficiency. The threaded connection ensures the piping system remains stable and secure during long-term use, preventing loosening. Compared to permanent connections such as welding, threaded connections are detachable, facilitating future partial maintenance, modifications, or line replacements of the piping system.

[0024] Furthermore, the connector body is provided with an adjusting collar for adjusting the connection seam at the location where the external thread is provided, and the adjusting collar is threadedly engaged with the connector body.

[0025] By adopting the above technical solution, after the joint body and the pipe fitting are tightened, the adjusting collar is rotated in the opposite direction, causing it to move along the external thread of the joint body towards the pipe fitting and tightly abut against the end face of the connected pipe fitting. This eliminates minor gaps caused by thread manufacturing tolerances or wear, making the connection structure more robust. The continuous preload applied by the adjusting collar can suppress the possibility of loosening of the threads, ensuring the long-term stability of the pipeline system connection.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up an openable work window and flip cover on the outer wall of the elbow that is prone to jamming, a maintenance channel that can directly reach the problem point is set up. When the line is blocked, the window can be opened directly for local traction and adjustment, avoiding traditional long-distance blind pulling operations, reducing the difficulty of threading and the risk of cable wear, and improving the efficiency and safety of threading, maintenance and replacement. 2. Through measures such as reinforced wing plates, the locking mechanism's connecting lugs positioned in high-rigidity areas, the connecting pin's shear strength, and the smooth fit between the flip cover and the pipe's inner wall, the pipe connector is guaranteed to have sufficient mechanical strength and resistance to deformation. After the flip cover closes, it effectively restores the connector's structural integrity and basic protective functions, ensuring its long-term stability and reliability. 3. The external threaded connection and matching adjusting collar allow for quick connection with various standard pipe fittings, ensuring a reliable seal and preventing loosening. Installation and disassembly are extremely simple. The interlocking protrusion and the adjustable clearance allow for a flip-top that can be opened without disassembly, optimizing the user experience and making the pipe connector suitable for both new construction and the renovation and maintenance of existing piping systems, thus expanding its application range. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a pipe connector that is easy to thread and installed on a pipe fitting, according to an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the overall structure of a pipe connector that facilitates wire threading, according to an embodiment of this application.

[0029] Figure 3 This is an exploded view of the structure of a pipe connector that facilitates wire threading, according to an embodiment of this application.

[0030] Figure 4 This is a partial structural diagram of a pipe connector that is easy to thread and installed on a pipe fitting, according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Connector body; 11. First interface; 111. External thread; 12. Second interface; 121. Working window; 122. Protective wing plate; 123. Snap-fit ​​groove; 2. Flip cover; 21. Snap-fit ​​protrusion; 3. Adjusting collar; 31. Mounting protrusion; 4. Locking mechanism; 41. First connecting ear; 411. Through hole; 42. Second connecting ear; 421. Threaded hole; 43. Connecting pin; 5. Pipe fitting. Detailed Implementation

[0032] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-4 The present application will be further described in detail with reference to the embodiments.

[0033] This application discloses a conduit connector that facilitates wire threading. (Refer to...) Figure 1 and Figure 2 The pipe connector for easy wiring includes a connector body 1, a flip cover 2, and an adjusting collar 3. The connector body 1 has a first interface 11 and a second interface 12 that are interconnected. The first interface 11 is used to connect with the pipe fitting 5, and the second interface 12 allows the wiring to pass through. In this embodiment, the pipe connector is a 90° elbow, so the central axis of the first interface 11 of the connector body 1 is perpendicular to the central axis of the second interface 12.

[0034] Combination Figure 3 The connector body 1 has a working window 121 on the outer wall of the side where the second interface 12 is located. The flip cover 2 is detachably connected to the connector body 1 and is used to close the working window 121. The working window 121 is opened on the outer wall of the bend where the blockage is most likely to occur, and intervenes in the bottleneck area of ​​the wire pulling operation. When the line is blocked at the bend arc surface due to a sudden change in direction, the operator can directly open the working window 121 at the obstruction point to reach the cable end with the shortest path for observation, correction or pulling.

[0035] The inner diameter of the flip cover 2 matches the inner diameter of the connector body 1, ensuring the continuity and smoothness of the internal passage of the pipe after the operating window is closed. The inner wall of the flip cover 2 and the original inner wall of the pipe together form a complete flow section without abrupt steps, allowing the line to pass through smoothly and without obstruction, avoiding secondary blockage, scratching or wear caused by internal steps or protrusions, and protecting the integrity of the line insulation layer.

[0036] The outer wall of the connector body 1 is symmetrically arranged along the tangential direction on both sides of the working window 121 and is integrally connected with two protective wing plates 122. The flip cover 2 is located between the two protective wing plates 122. The two protective wing plates 122 form a guide and protection groove to accommodate the flip cover 2, provide guidance and positioning for the opening and closing movement of the flip cover 2, facilitate installation and alignment, and form side protection for the flip cover 2.

[0037] Reference Figure 2 and Figure 3 The connector body 1 and the flip cover 2 are respectively provided with locking mechanisms 4. The locking mechanism 4 includes a first connecting ear 41, a second connecting ear 42, and a connecting pin 43. The first connecting ear 41 is fixedly connected to both sides of the flip cover 2, the second connecting ear 42 is fixedly connected to both sides of the connector body 1, and the connecting pin 43 is used to pass through and connect the first connecting ear 41 and the second connecting ear 42, thereby fixing the flip cover 2 to the connector body 1. This ensures that the flip cover 2 can be firmly pressed against the working window 121. Through the tight fit between the surfaces, basic dustproof and protective functions are achieved.

[0038] The second connecting ear 42 is located on the outer wall of the connector body 1 on the side where the second interface 12 is located, near the end of the connector body 1. The tangent direction of the second connecting ear 42 is perpendicular to that of the outer wall of the connector body 1. The first connecting ear 41 is located on both sides of the flip cover 2 and corresponds vertically to the position of the second connecting ear 42. The first connecting ear 41 has a through hole 411 for the connecting pin 43 to pass through, and the second connecting ear 42 has a threaded hole 421 that mates with the connecting pin 43.

[0039] In this embodiment, the connecting pin 43 is a bolt. The connecting pin 43 passes through the through hole 411 of the first connecting lug 41 and is screwed into the threaded hole 421 of the second connecting lug 42 to complete the fastening. The through hole 411 provides the necessary tolerance space, allowing the pin to be smoothly inserted even with slight misalignment, reducing assembly difficulty. The threaded hole 421 enables fastening with a single part, eliminating the need for an additional nut on the other side, simplifying the operation and avoiding the hassle of aligning the bolt and nut simultaneously in a narrow space. This makes opening and closing the side cover during wiring maintenance faster and easier. At the same time, the threaded connection provides a stable and reliable locking force. The self-locking characteristic of the thread prevents the connecting pin 43 from loosening under vibration, ensuring the stability of the flip cover 2 in the closed state and guaranteeing the basic protective function of the connector.

[0040] The flip cover 2 has a snap-fit ​​protrusion 21 on the side away from the first connecting ear 41 for snap-fitting and fixing with the connector body 1. The connector body 1 has a snap-fit ​​through groove 123 on the side wall for the snap-fit ​​protrusion 21 to be inserted. The width of the snap-fit ​​through groove 123 is greater than the thickness of the snap-fit ​​protrusion 21, so that there is a movable gap between it and the outer wall of the snap-fit ​​protrusion 21.

[0041] When closing the flip cover 2, first align the side with the snap-fit ​​protrusion 21 and insert it into the snap-fit ​​slot 123. Utilize the guiding nature of the structure to complete the initial snap-fit ​​fixation, achieving quick alignment that can be operated with one hand and preventing the flip cover 2 from shifting during subsequent tightening operations. During maintenance or wiring, simply open the locking mechanism 4 on one side. Using the snap-fit ​​protrusion 21 as an axis, the flip cover 2 can be lifted upwards at an angle. The movable gap provides the necessary physical space and rotational freedom for the flipping action, allowing the flip cover 2 to be opened like a small window, thus exposing the work window 121 for operation. This eliminates the need for completely removing and reinstalling the flip cover 2, improving work efficiency and making it suitable for maintenance scenarios. It avoids potential loss, bumps, or contamination problems that may occur after the flip cover 2 is completely detached, making the operation process more controllable and safer. The flip cover 2 is always connected to the main body via the snap-fit ​​protrusion 21, reducing the difficulty and risk of operation in high-altitude, narrow, or dimly lit environments.

[0042] Reference Figure 4 The outer wall of the connector body 1 is provided with an external thread 111 for connecting the pipe fitting 5 at one end of the first interface 11. The adjusting collar 3 is sleeved on the outer wall of the connector body 1 at the position where the external thread 111 is provided, thereby adjusting the connection between the connector body 1 and the pipe fitting 5. The adjusting collar 3 and the connector body 1 are threadedly engaged. The adjusting collar 3 has multiple mounting protrusions 31 arranged circumferentially on the outer wall to increase the friction force.

[0043] After the connector body 1 and pipe fitting 5 are tightened, the adjusting collar 3 is rotated in the opposite direction by pressing the mounting protrusion 31. This causes the adjusting collar 3 to move along the external thread 111 of the connector body 1 towards the pipe fitting 5 until the adjusting collar 3 tightly abuts against the end face of the connected pipe fitting 5, eliminating the gap between the pipe fitting 5 and the connector body 1 and making the connection structure more secure. The continuous pre-tightening force applied by the adjusting collar 3 can suppress the possibility of loosening of the threads and ensure the long-term stability of the pipeline system connection.

[0044] The implementation principle of a pipe connector for easy cable pulling in this application embodiment is as follows: A working window 121 is opened on the outer wall of the bend, where cable jamming is most likely to occur, and an openable flip-top structure 2 is used to establish a temporary operating channel inside the pipe system. When the cable is obstructed at the bend during cable pulling, the locking mechanism 4 can be released, and the flip-top 2 can be opened using the gap between the snap-fit ​​protrusion 21 and the snap-fit ​​groove 123. The obstructed cable can then be directly visualized and partially pulled through the working window 121, solving the problems of limited space, low efficiency, and easy cable damage during cable pulling. After the operation is completed, the snap-fit ​​protrusion 21 of the flip-top 2 is inserted into the snap-fit ​​groove 123 to achieve pre-positioning, and then bolts are used to tighten the connecting ears on both sides, restoring the flip-top 2 to its closed state. The smooth transition between the flip-top 2 and the inner wall of the pipe ensures the continuity of the channel. The pre-tightening function of the adjusting collar 3 ensures the sealing and vibration resistance of the pipe connection. This improves the convenience of cable pulling and maintenance and the long-term operational reliability of the pipe system.

[0045] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipe connector for easy wire threading, characterized in that: The device includes a connector body (1), which has a first interface (11) and a second interface (12) that are interconnected. The connector body (1) has a working window (121) on its outer side wall. The connector body (1) is detachably connected to a flip cover (2) for closing the working window (121) and a locking mechanism (4) for fixing the flip cover (2).

2. The pipe connector for easy wire threading according to claim 1, characterized in that: The operation window (121) is located on the outer wall of the side where the second interface (12) is located.

3. A pipe connector for easy wire threading according to claim 1, characterized in that: The inner diameter of the flip cover (2) matches the inner diameter of the connector body (1).

4. A pipe connector for easy wire threading according to claim 1, characterized in that: The outer wall of the connector body (1) is symmetrically arranged with protective wing plates (122) on both sides of the working window (121) along the tangential direction, and the flip cover (2) is located between the two protective wing plates (122).

5. A pipe connector for easy wire threading according to claim 1, characterized in that: The locking mechanism (4) includes a first connecting ear (41) fixedly connected to both sides of the flip cover (2), a second connecting ear (42) fixedly connected to both sides of the connector body (1), and a connecting pin (43) for passing through and connecting the first connecting ear (41) and the second connecting ear (42); The second connecting ear (42) is located on the outer wall of the connector body (1) on the side where the second interface (12) is located and is close to the end of the connector body (1). The tangent direction of the second connecting ear (42) is perpendicular to the outer wall of the connector body (1). The first connecting ear (41) is located on both sides of the flip cover (2) and corresponds vertically to the position of the second connecting ear (42).

6. A pipe connector for easy wire threading according to claim 5, characterized in that: The first connecting ear (41) has a through hole (411) through which the connecting pin (43) passes, and the second connecting ear (42) has a threaded hole (421) that mates with the connecting pin (43).

7. A pipe connector for easy wire threading according to claim 5, characterized in that: The flip cover (2) has a snap-fit ​​protrusion (21) on the side away from the first connecting ear (41) for snap-fitting and fixing with the connector body (1), and the connector body (1) has a snap-fit ​​through groove (123) on the side wall for the snap-fit ​​protrusion (21) to be inserted.

8. A pipe connector for easy wire threading according to claim 7, characterized in that: The width of the snap-fit ​​groove (123) is greater than the thickness of the snap-fit ​​protrusion (21), thus leaving a movable gap with the outer wall of the snap-fit ​​protrusion (21).

9. A pipe connector for easy wire threading according to claim 1, characterized in that: The outer wall of the connector body (1) is provided with an external thread (111) for connecting the pipe fitting at the end where the first interface (11) is located.

10. A pipe connector for easy wire threading according to claim 9, characterized in that: The connector body (1) is provided with an adjusting collar (3) for adjusting the connection seam at the location where the external thread (111) is provided, and the adjusting collar (3) is threadedly engaged with the connector body (1).

Images