A substation prefabricated optical cable terminal head connecting structure

Abstract

This utility model discloses a prefabricated optical cable termination connection structure for substations, relating to the field of optical cable termination connection technology. The utility model includes a terminal box with a latch and a handle on its side. Inside the terminal box are an optical fiber splice tray and a magnetic fixing device. This utility model achieves smooth insertion and removal of the optical fiber splice tray and adjustable angle through symmetrically arranged double sliding grooves and four sliding blocks, simplifying the installation and disassembly process. Precise adsorption by four sets of symmetrical magnetic components enables rapid positioning and stable fixing of the splice tray, preventing fiber loosening due to vibration. Flexible application of Velcro positioning tape provides additional fixing of the splice tray and neat fiber arrangement. The overall design eliminates the need for screws and tools, while the symmetrical structure ensures balanced force distribution. Combined with a sealing device to block impurities, it improves maintenance efficiency and extends equipment lifespan.

Description

Technical Field

[0001] This utility model belongs to the field of optical cable terminal head connection technology, and in particular relates to a prefabricated optical cable terminal head connection structure for substations. Background Technology

[0002] Existing prefabricated optical cable termination connections in substations mostly rely on traditional flange connections or fusion splices, which involve cumbersome installation procedures and stringent environmental requirements. Furthermore, the sealing performance at the connection points is insufficient, making them susceptible to moisture and dust intrusion, leading to signal attenuation. Disassembly and assembly are also inconvenient, hindering later maintenance and repair, and failing to meet the needs of efficient construction and long-term stable operation in substations.

[0003] According to a public announcement (Announcement No.: CN214623139U), a prefabricated optical cable terminal connection structure for substations includes an optical cable body. A sleeve connector is connected to the right side of the optical cable body. Connecting pieces are provided on the upper and lower sides of the sleeve connector, and a second groove is formed inside the connecting piece. An adjusting screw is installed inside the second groove. This invention includes a pin tray, a slider, a spring, and an insulating pin. When the insulating pin is inserted into the skeleton groove inside the optical cable body, and the external force acting on the insulating pin is removed, the first collar will move the insulating pin towards the center of the pin tray under the action of the spring force. This ensures that the insulating pin can lock into the skeleton groove inside the optical cable body, and ultimately connects the sleeve connector to the optical cable body through the pin tray. This design provides good stability between the optical cable body and the sleeve connector, ensuring that the sleeve connector will not fall off the end of the optical cable body.

[0004] In the aforementioned application, the cooperation between the connecting piece and the second groove and other components makes it difficult to solve the problem of smooth insertion and removal of the fiber optic splice plate and adjustable angle when the cable connector is connected and fixed in the terminal box, thus simplifying the installation and disassembly. This results in cumbersome installation and disassembly and inaccurate positioning when the cable connector is connected and fixed in the terminal box. Therefore, we propose a prefabricated optical cable terminal head connection structure for substations. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated optical cable terminal head connection structure for substations. Through the design of components such as sliding groove, slider, magnet N, fixing groove, and magnet S, it solves the problem of smooth insertion and removal of optical fiber splice trays and adjustable angle in the prior art, and simplifies installation and disassembly.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a prefabricated optical cable terminal head connection structure for substations, including a terminal box, a latch and a handle on the side of the terminal box, an optical fiber splice tray inside the terminal box, and a magnetic fixing device inside the terminal box.

[0008] The magnetic fixing device includes a sliding groove on the inner wall of the terminal box. A slider is slidably connected to the inner wall of the sliding groove, and a magnet N is fixedly connected to the top of the slider. A fixing groove is provided at the bottom of the fiber optic splice tray, and a magnet S is fixedly connected to the inner side of the fixing groove. A positioning cloth is provided inside the fiber optic splice tray, and hook and loop fasteners are provided on the sides of the positioning cloth. The terminal box serves as an integral container, protecting the internal fiber optic components from damage caused by the external environment. The latch is used to fix the opening of the terminal box, ensuring that the terminal box will not be opened due to vibration or external force in the working environment, thus protecting the safety of the internal components. The fiber optic splice tray is a key component used for storing and connecting optical fibers. It bears the responsibility of connecting and splicing optical fibers, ensuring the reliability and stability of the fiber optic connection. The groove and slider design allows the fiber optic splice tray to be smoothly inserted and removed, reducing the complexity of the operation process and saving maintenance and installation time. The magnetic attraction of magnets N and S keeps the fiber optic splice tray stable during use, preventing it from loosening due to vibration or external force. The positioning cloth is used to precisely fix the fiber optic splice tray inside the terminal box. Using hook and loop fasteners, the cloth can be pasted to the appropriate position according to actual needs, providing additional fixation and support, and preventing the fiber optic splice tray from shifting or tangling during use.

[0009] Furthermore, the system includes two sliding grooves symmetrically arranged along the vertical central axis of the terminal box, and four sliding blocks symmetrically arranged along the vertical central axis of the fiber optic splice tray. Traditional fiber optic splice tray installation typically requires screws for fixation, which not only increases the difficulty of installation and disassembly but may also lead to tool loss and wasted time. By employing a magnetic fixing structure, the fiber optic splice tray can be directly fixed in a preset position by magnetic force, eliminating the need for tools and making the installation and disassembly process more convenient. The number and position of the two sliding grooves symmetrically arranged along the vertical central axis of the terminal box, and the four sliding blocks symmetrically arranged along the vertical central axis of the splice tray, ensure uniform force and stability during installation. Unlike traditional methods that require disassembling the entire fiber optic splice tray, the design of the sliding grooves and sliding blocks allows users to adjust the angle of the fiber optic splice tray as needed, optimizing fiber layout and management.

[0010] Furthermore, four magnets (N) are arranged symmetrically along the vertical central axis of the fiber optic splice tray, and four magnets (S) are also arranged symmetrically along the vertical central axis of the fiber optic splice tray. This symmetrical arrangement of magnets N and S along the vertical central axis helps create a stable magnetic field inside the splice tray, thereby maintaining the balance and precise positioning of the equipment. This symmetrical arrangement reduces the impact of vibration or external forces on the equipment, ensuring accurate fiber splicing.

[0011] Furthermore, the magnet N is embedded in the fixing groove and magnetically attracted to the magnet S. The magnetic attraction characteristics of magnets N and S allow the component to automatically align with the fixing groove, avoiding installation deviation. The magnetic attraction provides a continuous fixing force to prevent the component from loosening or shifting during use. There is no need for complex structures such as screws and clips; quick assembly and disassembly can be achieved by magnetic force, reducing the difficulty of operation.

[0012] Furthermore, a gap compensation device is provided on the side of the terminal box. The gap compensation device includes a cable outlet hole, which is opened on the side of the terminal box. A comb-tooth rubber ring is fixedly connected to the side of the cable outlet hole. A sealing ring one is fixedly connected to the circumferential surface of the comb-tooth rubber ring. A sealing ring two is fixedly connected to the inner side of the terminal box. The comb-tooth rubber ring is a core adapter to the basic sealing component. The comb structure can deform according to the thickness of the cable, closely fitting the circumference of the cable, filling the gap between cables of different specifications and the outlet hole, and blocking dust, moisture and other impurities from entering the terminal box from the source. Sealing ring one and sealing ring two achieve secondary sealing reinforcement, fixed on the circumferential surface of the comb-tooth rubber ring, further filling the gap between the comb-tooth rubber ring and the inner wall of the cable outlet hole, improving the sealing reliability of the outlet hole position. Sealing ring two provides auxiliary sealing inside the box, fixed on the inner side of the terminal box, and works with other components to form a multi-layer sealing barrier to prevent impurities from seeping in from internal gaps or component joints.

[0013] Furthermore, there are two cable outlet holes, which are symmetrically arranged along the vertical central axis of the terminal box. There are also two comb-tooth rubber rings, which are symmetrically arranged along the vertical central axis of the terminal box. Two cables can be threaded through the two outlet holes at the same time, which meets the usage scenario where the terminal box needs to connect multiple lines. The symmetrical distribution along the vertical central axis ensures that the outlet positions of the two cables are symmetrical, avoiding cable tangling. At the same time, it makes the force on both sides of the terminal box even, reducing the deformation of the box or loosening of the seal caused by cable pulling.

[0014] Furthermore, there are two sealing rings of type one, which are symmetrical about each other along the vertical central axis of the terminal box. There are also two sealing rings of type two, which are symmetrical about each other along the vertical central axis of the terminal box. The two sealing rings of type one correspond to two comb-tooth rubber rings respectively. Each lead-out hole forms an independent sealing unit of comb-tooth rubber ring and sealing ring one, so as to avoid the failure of a single sealing ring affecting the overall seal. The sealing rings of type two are symmetrically distributed with the lead-out holes, forming a double symmetrical barrier of outer sealing and inner sealing with the sealing rings of type one, sealing the gaps from both the inner and outer sides, and further preventing dust and moisture from entering.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model achieves smooth insertion and removal of the fiber optic splice tray and adjustable angle through symmetrically arranged double sliding grooves and four sliding blocks, simplifying the installation and disassembly process. The precise adsorption of four sets of symmetrical magnetic components enables rapid positioning and stable fixation of the splice tray, preventing fiber loosening caused by vibration. The flexible application of Velcro positioning tape enables additional fixation of the splice tray and neat fiber layout. The overall design eliminates the need for screw fixing and can be operated without tools. At the same time, the symmetrical structure ensures balanced force distribution, and the sealing device blocks impurities, comprehensively ensuring the reliability of fiber optic connections, improving maintenance efficiency and equipment lifespan.

[0017] 2. This utility model achieves compatibility and orderly cable exit for cables of different thicknesses through double symmetrical cable lead-out holes and comb-tooth rubber rings, avoiding cable tangling and balancing the stress on the box. Through the multi-seal structure of comb-tooth rubber rings plus double symmetrical sealing ring one and double symmetrical sealing ring two, it achieves all-round gap sealing from the lead-out hole to the inside of the box, preventing dust and moisture from entering. Through the independent sealing unit design, the failure of a single sealing does not affect the overall sealing effect, ensuring that the internal components of the terminal box are not corroded by the environment. The overall design takes into account the needs of multiple cable use and sealing reliability, improving equipment adaptability and service life.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2This is a three-dimensional partial structural diagram of the optical fiber fusion splice tray of this utility model;

[0022] Figure 3 This is a three-dimensional enlarged structural schematic diagram of the slide groove of this utility model;

[0023] Figure 4 This is a three-dimensional enlarged structural schematic diagram of the fixing groove of this utility model;

[0024] Figure 5 This is a three-dimensional enlarged structural schematic diagram of the gap compensation device of this utility model;

[0025] Figure 6 This is a three-dimensional enlarged structural schematic diagram of the comb-tooth rubber ring of this utility model;

[0026] Figure 7 This is a three-dimensional enlarged structural diagram of the positioning cloth patch of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Terminal box; 2. Locking buckle; 3. Handle; 4. Fiber optic splice tray; 5. Magnetic fixing device; 51. Slide groove; 52. Slider; 53. Magnet N; 54. Fixing groove; 55. Magnet S; 56. Positioning cloth patch; 57. Hook and loop fastener; 58. Adhesive hook and loop fastener; 6. Gap compensation device; 61. Cable lead-out hole; 62. Comb-tooth rubber ring; 63. Sealing ring one; 64. Sealing ring two. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7 This utility model is a prefabricated optical cable terminal head connection structure for substations, including a terminal box 1, a latch 2 on the side of the terminal box 1, a handle 3 on the side of the terminal box 1, an optical fiber splice tray 4 inside the terminal box 1, and a magnetic fixing device 5 inside the terminal box 1.

[0031] The magnetic fixing device 5 includes a slide groove 51, which is formed on the inner wall of the terminal box 1. A slider 52 is slidably connected to the inner wall of the slide groove 51. A magnet N53 is fixedly connected to the top of the slider 52. A fixing groove 54 is formed at the bottom of the fiber optic splice tray 4. A magnet S55 is fixedly connected to the inner side of the fixing groove 54. A positioning cloth 56 is provided inside the fiber optic splice tray 4. Hook and loop fasteners 57 and 58 are provided on the side of the positioning cloth 56. The terminal box 1 serves as an integral container, protecting the internal fiber optic components from damage caused by the external environment. The latch 2 is used to fix the opening of the terminal box 1, ensuring that the terminal box 1 will not be opened due to vibration or external force in the working environment, thus protecting the safety of the internal components. The fiber optic splice tray 4 is a key component for storing and connecting optical fibers. It bears the responsibility of connecting and splicing optical fibers, ensuring the reliability and stability of the fiber optic connection. The design of the groove 51 and slider 52 allows the fiber optic splice tray 4 to be smoothly inserted or removed, reducing the complexity of the operation process and saving maintenance and installation time. The magnetic attraction of magnets N53 and S55 keeps the fiber optic splice tray 4 stable during use and prevents it from becoming loose, avoiding fiber optic loosening or poor connection due to vibration or external force. The positioning cloth 56 is used to precisely fix the fiber optic splice tray 4 inside the terminal box 1. With hook and loop fasteners 57 and adhesive fasteners 58, the cloth can be pasted to the appropriate position according to actual needs, providing additional fixation and support, and preventing displacement or tangling of the fiber optic splice tray 4 during use.

[0032] As shown in the figure, there are two sliding grooves 51, symmetrically arranged along the vertical central axis of the terminal box 1, and four sliding blocks 52, symmetrically arranged along the vertical central axis of the fiber optic splice tray 4. Traditional fiber optic splice tray 4 installation usually requires screws for fixing, which not only increases the difficulty of installation and disassembly but may also lead to tool loss and wasted time. By using a magnetic fixing structure, the fiber optic splice tray 4 can be directly fixed in a preset position by magnetic force, eliminating the need for tools and making the installation and disassembly process more convenient. The number and position of the two sliding grooves 51 symmetrically arranged along the vertical central axis of the terminal box 1, and the four sliding blocks 52 symmetrically arranged along the vertical central axis of the splice tray, ensure that the fiber optic splice tray 4 maintains uniform force and stability during installation. Unlike the traditional method that requires disassembling the entire fiber optic splice tray 4, the design of the sliding grooves 51 and sliding blocks 52 allows users to adjust the angle of the fiber optic splice tray 4 as needed, optimizing the fiber layout and management.

[0033] As shown in the figure, four magnets N53 are arranged symmetrically along the vertical central axis of the fiber optic splice tray 4, and four magnets S55 are also arranged symmetrically along the vertical central axis of the fiber optic splice tray 4. The symmetrical arrangement of magnets N53 and S55 along the vertical central axis helps create a stable magnetic field inside the splice tray, thereby maintaining the balance and precise positioning of the equipment. This symmetrical arrangement reduces the impact of vibration or external forces on the equipment, ensuring accurate fiber splicing.

[0034] As shown in the figure, magnet N53 is embedded in the fixing groove 54 and magnetically attracted to magnet S55. The magnetic attraction of magnets N53 and S55 allows the parts to automatically align with the fixing groove 54, avoiding installation deviation. The magnetic attraction provides a continuous fixing force to prevent the parts from loosening or shifting during use. There is no need for complex structures such as screws and clips. Assembly and disassembly can be achieved quickly by magnetic force, reducing the difficulty of operation.

[0035] As shown in the figure, a gap compensation device 6 is provided on the side of the terminal box 1. The gap compensation device 6 includes a cable outlet hole 61, which is located on the side of the terminal box 1. A comb-tooth rubber ring 62 is fixedly connected to the side of the cable outlet hole 61. A sealing ring 63 is fixedly connected to the circumferential surface of the comb-tooth rubber ring 62. A sealing ring 64 is fixedly connected to the inner side of the terminal box 1. The comb-tooth rubber ring 62 is a core adapter to the basic sealing component. The comb structure can deform according to the thickness of the cable, tightly fitting the circumference of the cable and filling the gap. The gaps between cables of different specifications and the lead-out holes prevent dust, moisture and other impurities from entering the terminal box 1 at the source. The sealing ring 63 and sealing ring 64 provide secondary sealing reinforcement and are fixed on the circumferential surface of the comb rubber ring 62. They further fill the gap between the comb rubber ring 62 and the inner wall of the cable lead-out hole 61, improving the sealing reliability of the lead-out hole position. The sealing ring 64 provides auxiliary sealing inside the box and is fixed on the inner side of the terminal box 1. Together with other components, it forms a multi-layer sealing barrier to prevent impurities from seeping in from internal gaps or component joints.

[0036] As shown in the figure, there are two cable outlet holes 61, which are symmetrical to each other along the vertical central axis of the terminal box 1. There are also two comb-tooth rubber rings 62, which are symmetrical to each other along the vertical central axis of the terminal box 1. Two cables can be passed through the two outlet holes at the same time, which meets the usage scenario where the terminal box 1 needs to connect multiple lines. The symmetrical distribution along the vertical central axis makes the outlet positions of the two cables symmetrical, avoids cable tangling, and makes the force on both sides of the terminal box 1 even, reducing the deformation of the box or loosening of the seal caused by cable pulling.

[0037] As shown in the figure, there are two sealing rings 63, which are symmetrical to each other along the vertical central axis of the terminal box 1. There are also two sealing rings 64, which are symmetrical to each other along the vertical central axis of the terminal box 1. The two sealing rings 63 correspond to the two comb-tooth rubber rings 62 respectively. Each lead-out hole forms an independent sealing unit of comb-tooth rubber ring 62 and sealing ring 63, so as to avoid the failure of a single sealing ring from affecting the overall seal. The sealing rings 64 are symmetrically distributed with the lead-out holes, forming a double symmetrical barrier of outer and inner sealing with the sealing rings 63, sealing the gaps from both the inner and outer sides, and further preventing dust and moisture from entering.

[0038] One specific application of this embodiment is as follows: The terminal box 1 serves as a protective carrier, with the opening sealed by the latch 2 and the handle 3 for easy carrying, protecting the internal components. The fiber optic splice tray 4 carries the fiber optic connection and splicing. It achieves smooth insertion and insertion and angle adjustment with the help of symmetrical double sliding grooves 51 and four sliders 52. Then, it is precisely attracted by four sets of symmetrical magnets N53 and magnets S55, so that the fiber optic splice tray 4 can be quickly positioned and firmly fixed to prevent loosening. The positioning cloth 56 is flexibly attached by the adhesive side hook and loop fastener 58 and the hook side hook and loop fastener 57 to further fix the fiber optic splice tray 4 and straighten the fiber. The whole process does not require tools. The splice tray can be disassembled and adjusted by magnetic attraction and sliding grooves 51. At the same time, the symmetrical structure ensures balanced force, reduces the impact of vibration, ensures stable and reliable fiber optic connection, and improves the convenience of installation and maintenance.

[0039] Two symmetrical cable outlet holes 61 allow for the passage of dual cables, meeting the needs of multi-line connections. The symmetrical layout avoids cable tangling and balances the stress on the box. The comb-tooth rubber ring 62 deforms with the cable thickness, closely fitting the circumference of the cable and filling the gaps in the foundation. The first sealing ring 63 is fixed to the outer circumference of the comb-tooth rubber ring 62, filling the gap between it and the inner wall of the outlet hole. The second sealing ring 64 is symmetrically arranged inside the box, forming a double sealing barrier with the first sealing ring 63. The three work together to construct a multi-seal structure, sealing gaps from the outlet hole to the inside of the box in all directions, preventing dust and moisture from entering. At the same time, the independent sealing unit design ensures that the failure of a single sealing line does not affect the whole, ensuring that the internal components of the terminal box 1 are not corroded by the environment.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A prefabricated optical cable terminal connection structure for substations, characterized in that, Includes a terminal box (1), a latch (2) is provided on the side of the terminal box (1), a handle (3) is provided on the side of the terminal box (1), an optical fiber splice tray (4) is provided inside the terminal box (1), and a magnetic fixing device (5) is provided inside the terminal box (1). The magnetic fixing device (5) includes a slide groove (51), which is opened on the inner wall of the terminal box (1). A slider (52) is slidably connected to the inner wall of the slide groove (51). A magnet N (53) is fixedly connected to the top of the slider (52). A fixing groove (54) is opened at the bottom of the fiber optic splice tray (4). A magnet S (55) is fixedly connected to the inner side of the fixing groove (54). A positioning cloth patch (56) is provided inside the fiber optic splice tray (4). Hook and loop fasteners (57) are provided on the side of the positioning cloth patch (56). An adhesive hook and loop fastener (58) is provided on the side of the positioning cloth patch (56).

2. The prefabricated optical cable terminal connection structure for substations according to claim 1, characterized in that, The number of the slide grooves (51) is two, and they are symmetrical to each other along the vertical central axis of the terminal box (1). The number of the sliders (52) is four, and they are symmetrical to each other along the vertical central axis of the fiber optic splice tray (4).

3. The prefabricated optical cable terminal head connection structure for substations according to claim 1, characterized in that, The number of magnets N (53) is set to four, and they are symmetrical to each other along the vertical central axis of the fiber optic splice tray (4). The number of magnets S (55) is set to four, and they are symmetrical to each other along the vertical central axis of the fiber optic splice tray (4).

4. The prefabricated optical cable terminal head connection structure for substations according to claim 1, characterized in that, The magnet N (53) is embedded in the fixing groove (54) and magnetically attracted to the magnet S (55).

5. The prefabricated optical cable terminal connection structure for substations according to claim 1, characterized in that, The terminal box (1) is provided with a gap compensation device (6) on its side. The gap compensation device (6) includes a cable outlet hole (61). The cable outlet hole (61) is opened on the side of the terminal box (1). A comb-tooth rubber ring (62) is fixedly connected to the side of the cable outlet hole (61). A sealing ring one (63) is fixedly connected to the circumferential surface of the comb-tooth rubber ring (62). A sealing ring two (64) is fixedly connected to the inner side of the terminal box (1).

6. The prefabricated optical cable terminal head connection structure for substations according to claim 5, characterized in that, The cable lead-out holes (61) are provided in two quantities and are symmetrical to each other along the vertical central axis of the terminal box (1). The comb-tooth rubber rings (62) are provided in two quantities and are symmetrical to each other along the vertical central axis of the terminal box (1).

7. The prefabricated optical cable terminal connection structure for a substation according to claim 5, characterized in that, There are two sealing rings (63) and they are symmetrical to each other along the vertical central axis of the terminal box (1). There are two sealing rings (64) and they are symmetrical to each other along the vertical central axis of the terminal box (1).

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