Screw joint sealing connecting device

Abstract

The utility model discloses a screw joint sealing connecting device, relates to the technical field of connecting devices, and solves the problems of structure complexity, operation complexity and the like. The first conductor and the second conductor are mutually connected to form a connecting position of the first conductor and the second conductor, a protective cylinder is mounted at the connecting position and sleeves the periphery of the connecting position, protective covers are mounted at two ends of the protective cylinder respectively, mounting jacks are formed in the protective covers, and the first conductor and the second conductor are inserted into the mounting jacks of the corresponding protective covers respectively; an operation hole is formed in the protection cylinder, and a top cover is detachably installed on the operation hole. The connection positions of the first conductor and the second conductor are integrated in the protective cylinder, so that the overall structure of the connection device is simplified; the arrangement of the protective cylinder not only can protect the conductor from the influence of the external environment, but also enables the insertion and fixation of the conductor to be simple and fast through the protective cover and the installation jack arranged at the two ends of the protective cylinder, thereby saving the complex alignment and fastening steps, and shortening the installation time.

Description

Technical Field

[0001] The utility model relates to the technical field of connection devices, in particular to a threaded sealing connection device. Background Art

[0002] Connectors play a crucial role in electronics and electrical engineering, ensuring a secure and reliable connection between two conductors. For example, Chinese utility model patent CN220021855U discloses a copper wire and aluminum rod adapter structure that allows for complete assembly and transfer of copper and aluminum rods throughout a vehicle. This flexible combination of copper and aluminum rods also meets the current requirements for miniaturization, lightweighting, and low cost of new energy vehicles.

[0003] However, when it comes to connecting the two boxes, achieving a precise fit often leads to complex protective box designs, which undoubtedly increases manufacturing difficulty and cost, while also causing inconvenience during on-site installation. In practice, complex structures can lead to extended installation and maintenance times, increase operational difficulty, and compromise connection efficiency. Furthermore, the long seam at the connection between the two boxes significantly challenges the sealing performance of the sealing ring, hindering long-term use. Summary of the Invention

[0004] In order to cope with many challenges in the existing technology, especially the structural complexity and cumbersome operation, the utility model proposes a threaded sealing connection device, which aims to improve the connection method in the field of electrical connection. Traditional connection devices are often limited by their complex internal structure and cumbersome installation steps. These limitations not only increase the cost of manufacturing and maintenance, but also affect the efficiency and reliability of the connection to a certain extent.

[0005] The technical solution of the utility model includes a first conductor and a second conductor, which are connected to each other and form a connection position between the two. A protective tube is installed at the connection position, and the protective tube is outermostly arranged around the connection position. Protective covers are respectively installed at both ends of the protective tube, and the protective covers are provided with mounting holes. The first conductor and the second conductor are respectively inserted into the mounting holes of the corresponding protective covers; an operating hole is provided on the protective tube, and a top cover is detachably installed on the operating hole.

[0006] By adopting the above technical solution, the connection position of the first conductor and the second conductor is integrated in a protective tube, which simplifies the overall structure of the connection device; the setting of the protective tube not only protects the conductor from the influence of the external environment, but also the protective covers and mounting sockets at both ends make the insertion and fixation of the conductor simple and quick, thus eliminating the complicated alignment and fastening steps and shortening the installation time; in addition, combined with the detachable design of the top cover, it allows necessary installation and maintenance to be carried out through the operation hole with only the top cover removed, reducing the tedious work of overall large-scale disassembly, improving the efficiency of on-site operations, and at the same time reducing the risk of sealing failure caused by frequent disassembly and assembly, ensuring the long-term stability of the connection part.

[0007] In a possible design, the first conductor and the second conductor are fastened to each other and in contact via a bolt, a nut is fixed in the protective tube, and the bolt is threadably engaged with the nut.

[0008] With the above design, the bolt can ensure close contact between the two conductors, forming a low-impedance electrical path and enhancing the reliability of the electrical connection. In addition, the nut is fixedly mounted on the inner wall of the protective tube, making it easy to install, adjust and remove the bolt without the need for special tools. This not only simplifies the installation process, but also facilitates subsequent maintenance and inspection.

[0009] In a possible design, a sealing cover is installed in the operating hole, the sealing cover covers the bolt member, and the sealing cover is elastically pressed into contact with the hole wall of the operating hole to form a seal.

[0010] By adopting the above design, a tight sealing layer can be formed on the wall of the operating hole, which effectively prevents moisture, dust, harmful gases or other environmental pollutants from entering the interior of the connecting device, protects the internal components, and ensures the safety of the connection position. In addition, considering the length of the seam position when the sealing cover is disassembled compared with the existing technology, the use of the sealing cover is conducive to maintaining the sealing for a longer time.

[0011] In a possible design, sealing members are respectively installed at both ends of the protective tube. The sealing members elastically cover the outer periphery of the corresponding first conductor or second conductor, and the sealing members are elastically squeezed with the tube wall of the protective tube to form a sealed fit.

[0012] With the above design, the elastic properties of the seal enable it to adapt to conductors of different diameters or shapes. Even if the conductor size changes slightly, the seal can maintain close contact with the conductor through its own deformation, ensuring the consistency of the sealing effect. This allows the seal to effectively isolate the external environment and prevent external impurities such as moisture, dust, oil, etc. from entering the interior of the connection device, thereby ensuring the safety of the internal electrical connection.

[0013] In a possible design, a plurality of support blocks are integrally provided on the wall of the protective tube, and the support blocks are arranged in a ring and respectively press against the outer periphery of the corresponding first conductor or the second conductor.

[0014] With the above design, the support block provides mechanical support for the conductors, helping the first conductor and the second conductor to maintain correct alignment and positioning at the connection position, preventing displacement or bending when subjected to external forces, thereby improving the structural stability and durability of the entire connection device.

[0015] In a possible design, the protective cover and the protective tube, as well as the top cover and the protective tube, are respectively connected via a snap-fit structure. The snap-fit structure includes an oblique protrusion and a snap-fit hole, and the oblique protrusion and the snap-fit hole form a snap connection.

[0016] With the above design, the snap-fit structure enables the protective cover and the top cover to be quickly installed on the protective cylinder, saving assembly and disassembly time and improving work efficiency. In addition, the structural design is simple and easy to process, which reduces manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the appearance structure of a specific embodiment of the utility model;

[0018] Figure 2 This is an exploded diagram of a specific embodiment of the utility model;

[0019] Figure 3 A cross-sectional view of a specific embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of a specific embodiment of the utility model (the protective cover and seal on one side are hidden).

[0021] Wherein: 1. first conductor;

[0022] 2. Second conductor;

[0023] 3. Protective tube; 31. Operation hole; 32. Support block;

[0024] 4. Protective cover; 41. Mounting jack; 42. Sealing element;

[0025] 5. Top cover; 51. Sealing cover;

[0026] 6. Bolts; 61. Nuts;

[0027] 7. Snap-fit structure; 71. Oblique protrusion; 72. Snap-fit hole. DETAILED DESCRIPTION

[0028] like Figures 1-4The threaded sealed connection device shown includes a first conductor 1 and a second conductor 2, which are interconnected and form a connection point between the two conductors. The first and second conductors 1 and 2 can be conductive connectors such as metal bars, wire harnesses, and cables, and are fixedly connected by twisting, pressing, welding, threading, or other methods. A hollow protective tube 3 is installed at the connection point between the two conductors. The protective tube 3 is externally mounted on the outer periphery of the connection point. Protective covers 4 are installed at both ends of the protective tube 3 in the longitudinal direction. The protective covers 4 cover the openings at both ends of the protective tube 3. The center of the protective cover 4 defines a mounting hole 41. The first and second conductors 1 and 2 are respectively inserted into the corresponding mounting holes 41 of the protective cover 4 until they enter the interior of the protective tube 3 and are fixedly connected to each other inside the protective tube 3. The mounting holes 41 on the protective cover 4 should match the dimensions of the first and second conductors 1 and 2 to ensure smooth insertion of the conductors. The protective tube 3 has an operating hole 31 extending through the inside and outside, and a top cover 5 is removably mounted at the opening of the operating hole 31. During installation, first install the protective cover 4 at both ends of the protective tube 3. After the first conductor 1 and the second conductor 2 pass through the installation holes 41 on the protective cover 4 and enter the inside of the protective tube 3, the protective cover 4 should cover the openings at both ends of the protective tube 3 to close the connection position; remove the top cover 5, tighten the connection position through the operating hole 31, and finally close the top cover 5 to ensure that the protective cover 4 and the protective tube 3 can completely cover the connection position to provide adequate protection.

[0029] The connection positions of the first conductor 1 and the second conductor 2 are parallel and in contact, and are fastened to each other by a bolt 6. A nut 61 is fixedly embedded in the inner wall of the protective tube 3. The bolt 6 passes through the first conductor 1 and the second conductor 2 in sequence, and is then threadedly fastened with the nut 61. Through the cooperation of the bolt 6 and the nut 61, the first conductor 1, the second conductor 2, and the protective tube 3 are fixedly connected. While connecting the first conductor 1 and the second conductor 2, the protective tube 3 is also limited in the connection position to prevent the protective tube 3 from being separated from the connection position. The first conductor 1 and the second conductor 2 are a metal bar structure that can be used in scenarios where new energy and high current are carried. The bolt 6 provides sufficient mechanical strength to withstand external vibration, impact, or pulling force, maintain a tight connection between the conductors, and prevent the connection from loosening.

[0030] The bolt member 6 is positioned opposite or within the operating hole 31. A sealing cover 51 is installed within the operating hole 31, covering the bolt member 6. The outer periphery of the sealing cover 51 features multiple raised lips that elastically press against the wall of the operating hole 31 to form a seal. The sealing cover 51 not only blocks external contaminants but also provides a layer of physical protection for the bolt member 6, preventing it from being directly exposed to the environment and extending the service life of the bolt member 6 and the connection device. Furthermore, when removing the hole cover, the small size of the sealing surface of the sealing cover 51 reduces the potential for leakage, thus reducing the likelihood of leakage.

[0031] There is a seam at the opening of the protective tube 3. To enhance sealing, an annular seal 42 is installed at each end of the protective tube 3. The inner side of the seal 42 elastically wraps around the outer periphery of the corresponding first conductor 1 or second conductor 2, and the outer edge of the seal 42 elastically squeezes against the wall of the protective tube 3 to form a sealed fit. The elastic properties of the seal 42 enable it to adapt to conductors of varying diameters and shapes. Even with slight variations in conductor size, the seal 42 maintains close contact with the conductor through its own deformation. Furthermore, to prevent leakage risk caused by excessive compression of the conductor against the seal 42, several support blocks 32 are integrally provided on the inner wall of the protective tube 3. The support blocks 32 protrude inward and are evenly arranged circumferentially, each of which abuts against the outer periphery of the corresponding first conductor 1 or second conductor 2. In this way, the support blocks 32 constrain the position of the conductor, keeping it as close to the center of the protective tube 3 as possible, preventing the expansion of the gap caused by excessive compression of the conductor and ensuring the sealing effectiveness of the seal 42.

[0032] The protective cover 4 and the protective tube 3, as well as the top cover 5 and the protective tube 3, are respectively connected via a snap-fit structure 7. The snap-fit structure 7 includes an oblique protrusion 71 and a snap-fit hole 72. The oblique protrusion 71 and the snap-fit hole 72 form a snap-fit connection. The oblique protrusion 71 is located on the protective tube 3, and the snap-fit hole 72 is located on the protective cover 4 or the top cover 5. The oblique protrusion 71 is shaped with a certain inclination angle, and the snap-fit hole 72 is a hole that matches the oblique protrusion 71, and its size and shape are designed to accommodate the oblique protrusion 71. During the snap-fit process, the edge of the snap-fit hole 72 squeezes the oblique protrusion 71 and elastically deforms until the oblique protrusion 71 completely enters the snap-fit hole 72. The edge of the snap-fit hole 72 will restore its original shape, and the edge of the snap-fit hole 72 will press against the oblique protrusion 71 to form a stable connection. The snap-fit structure 7 can ensure a quick, easy and reliable connection, while providing the necessary sealing and protection.

Claims

1. A threaded sealing connection device, characterized in that: The invention comprises a first conductor (1) and a second conductor (2), wherein the first conductor (1) and the second conductor (2) are connected to each other and form a connection position between the two. A protective tube (3) is installed on the connection position, and the protective tube (3) is sheathed around the outer periphery of the connection position. Protective covers (4) are respectively installed at both ends of the protective tube (3), and the protective covers (4) are provided with mounting holes (41). The first conductor (1) and the second conductor (2) are respectively inserted into the mounting holes (41) of the corresponding protective covers (4); an operating hole (31) is provided on the protective tube (3), and a top cover (5) is detachably installed on the operating hole (31).

2. The threaded sealing connection device according to claim 1, characterized in that: The first conductor (1) and the second conductor (2) are fastened to each other via a bolt member (6); a nut (61) is fixed in the protective tube (3); and the bolt member (6) is threadedly engaged with the nut (61).

3. The threaded sealing connection device according to claim 2, characterized in that: A sealing cover (51) is installed in the operating hole (31), the sealing cover (51) covers the bolt member (6), and the sealing cover (51) elastically squeezes and contacts the hole wall of the operating hole (31) to form a seal.

4. The threaded sealing connection device according to claim 1 or 3, characterized in that: Sealing members (42) are respectively installed at both ends of the protective tube (3), and the sealing members (42) are elastically wrapped around the outer periphery of the corresponding first conductor (1) or second conductor (2), and the sealing members (42) and the tube wall of the protective tube (3) are elastically squeezed to form a sealing fit.

5. The threaded sealing connection device according to claim 1 or 3, characterized in that: A plurality of support blocks (32) are integrally provided on the wall of the protective tube (3), and the support blocks (32) are arranged in a ring and respectively press against the outer periphery of the corresponding first conductor (1) or second conductor (2).

6. The threaded sealing connection device according to claim 1 or 3, characterized in that: The protective cover (4) and the protective tube (3), as well as the top cover (5) and the protective tube (3), are respectively connected via a snap-fit structure (7). The snap-fit structure (7) comprises an oblique protrusion (71) and a snap-fit hole (72). The oblique protrusion (71) and the snap-fit hole (72) form a snap connection.

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