A navigation light injection type cable connector

Abstract

This utility model provides a refillable cable connector for navigation lights, relating to the field of airport navigation light installation technology. It includes a grounding chamber and a wiring chamber. The grounding chamber contains a grounding connection screw, a grounding ring, and a sealing plug. The grounding ring is a metal ring with a radially protruding mounting platform on its outer circumference. A threaded hole is formed on the mounting platform, allowing the grounding connection screw to pass through for installation. A high-strength waterproof shell forms the grounding chamber and wiring chamber, while the sealing plug isolates the two chambers. A two-component high-insulation-strength adhesive is used for insulation filling, resulting in a compact overall structure. The grounding ring structure ensures rapid installation with short installation time.

Description

Technical Field

[0001] This utility model relates to the field of airport navigation lighting installation technology, and in particular to a navigation lighting injection type cable connector. Background Technology

[0002] Navigational lighting cable connectors are key components used for cable connections in airport navigational lighting systems. They enable reliable electrical and mechanical connections, ensuring cable stability in complex environments.

[0003] In the existing electrical connection technology of airport navigation lighting systems, the splicing operation of plug-in cable connectors in isolation transformer boxes to main cables typically adopts a wrapping connection process. This process uses multiple layers of insulating tape to wrap the conductor connection points layer by layer for insulation treatment, and then applies heat-shrink tubing or cold-shrink tubing as an external protective structure.

[0004] However, this process has the following technical defects: the insulation treatment of the conductor connection part requires multiple complex procedures such as multi-layer tape wrapping, control of the number of wrapping layers, adjustment of wrapping tension, and calculation of the number of crimping turns; the process quality is highly dependent on the operator's technical proficiency, and is prone to microscopic defects in the insulation layer of the joint point due to operational deviations such as insufficient tape wrapping uniformity, poor material adhesion, or inaccurate process parameters; the decrease in insulation resistance generated by a single joint point will have a cumulative effect in the navigation light circuit composed of dozens to hundreds of series joint points, resulting in a reduction in the insulation strength of the entire circuit and affecting flight safety.

[0005] Therefore, there is an urgent need for a navigation light injection-type cable connector to replace the existing wrapping connection process, in order to solve the problems of complex procedures, reliance on operator skill, and safety hazards in the existing process. Utility Model Content

[0006] In view of this, this utility model proposes a navigation light injection type cable connector, which aims to solve the problems of complex procedures, reliance on operator skill, and safety hazards in the existing wrapping connection process.

[0007] This utility model provides a navigation light injection cable connector, including a grounding chamber and a wiring chamber, which are detachably connected. The grounding chamber is provided with a grounding connection screw, a grounding ring and a sealing plug inside.

[0008] Furthermore, the grounding ring includes a metal ring, and the outer peripheral wall of the metal ring is radially provided with an installation platform.

[0009] Furthermore, a grounding lead-out bolt is provided on the installation platform, which allows the grounding connection screw to pass through for installation; the grounding chamber is provided with a reserved hole.

[0010] Furthermore, a cylindrical armor layer is fixed inside the grounding cavity, and the outer wall of the armor layer can fit against the inner surface of the grounding ring for fixing the grounding ring.

[0011] Furthermore, the grounding connection screw passes through the reserved hole and is threadedly connected to the grounding lead-out bolt.

[0012] Furthermore, the core wires between the grounding chamber and the wiring chamber are crimped with sleeves, the grounding chamber and the wiring chamber are made of semi-flexible plastic with a high waterproof rating, and the internal insulation material of the grounding chamber and the wiring chamber is a two-component adhesive with high insulation strength.

[0013] Furthermore, the grounding chamber is connected to the core wire of the lighting cable, and has an inlet end for the core wire of the lighting cable to enter. A grounding component is movably connected to one side of the inlet end.

[0014] Furthermore, the grounding chamber is connected to the wiring chamber on the side opposite to the incoming line end, and a sealing cap is provided on the outside of the grounding chamber on the side opposite to the incoming line end, and a sealing plug is provided inside the grounding chamber on the side opposite to the incoming line end.

[0015] Furthermore, the grounding assembly is a detachable structure, including a sealing ring, a washer kit, a grounding braided wire, and a nut, and the sealing ring, washer kit, and grounding braided wire are securely connected by tightening the nut.

[0016] Furthermore, the first end of the wiring chamber is provided with an internal thread, which forms a threaded connection with the grounding chamber; a T-shaped sealing ring and a sealing cap are detachably fitted on the outer periphery of the second end of the wiring chamber in sequence, and the T-shaped sealing ring and the sealing cap are axially sealed together.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. By setting up independent grounding chamber and wiring chamber, the grounding chamber and wiring chamber are isolated by sealing plugs. Two-component strong adhesive is used as the insulating medium in the chamber, making the overall structure compact and small, which is more suitable for the installation requirements of isolation transformer boxes in narrow spaces.

[0019] 2. By including a metal ring in the grounding ring, and a mounting platform radially protruding from the outer circumference of the metal ring, a threaded hole is provided on the mounting platform. The threaded hole allows the grounding connection screw to pass through for installation, enabling the grounding wire to be led out, ensuring a firm connection, and supporting quick replacement of the grounding wire, thus solving the problem that the existing wrapped cable head cannot replace the grounding wire.

[0020] 3. By combining a non-porous potting process with a T-shaped dynamic sealing ring, the seal is more secure and the protection is better. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 A schematic diagram of the overall structure of the navigation light injection cable connector provided in this embodiment of the utility model;

[0023] Figure 2 A cross-sectional structural schematic diagram of the navigation light injection-type cable connector provided in an embodiment of this utility model;

[0024] Figure 3 A schematic diagram of the potting cross-sectional structure of the navigation light potting cable connector provided in this embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the grounding ring structure of the navigation light injection cable connector provided in this embodiment of the utility model.

[0026] In the diagram: 1-Grounding chamber; 2-Wiring chamber; 3-Grounding ring; 6-Armor layer; 7-Reserved hole; 8-Sealing ring; 9-Sealing plug; 10-Grounding assembly; 11-T-type sealing ring; 12-Sealing cap; 13-Glue inlet; 301-Metal ring; 302-Mounting platform; 303-Grounding lead bolt. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a navigation light injection-type cable connector, comprising:

[0032] The grounding chamber 1 and the wiring chamber 2 are provided. The core wires between the grounding chamber 1 and the wiring chamber 2 are connected by sleeve crimping. The grounding chamber 1 is equipped with a grounding connection screw, a grounding ring 3, and a sealing plug 9. The grounding ring 3 includes a metal ring 301, and a mounting platform 302 is radially protruding from the outer peripheral wall of the metal ring 301. A grounding lead-out bolt 303 is provided on the mounting platform 302, which allows the grounding lead-out screw to pass through for installation.

[0033] As shown above, the overall structure of the device includes a grounding chamber 1 and a wiring chamber 2 that are threadedly connected to each other. The grounding chamber 1 contains a grounding connection screw, a grounding ring 3, and a sealing plug 9. The grounding ring 3 is made of conductive metal, and its main body is a metal ring 301. The outer peripheral wall of the metal ring 301 extends radially outward to form an annular mounting platform 302. A grounding lead-out bolt 303 is provided on the mounting platform 302, with its axis parallel to the central axis of the metal ring 301, for passing through the grounding connection screw. A sealing plug 9 is provided at the threaded interface between the grounding chamber 1 and the wiring chamber 2. The sealing plug 9 is made of elastic silicone, and its outer edge is pressed into the interior of the chamber connection seam to achieve dustproof, waterproof, and electrical isolation functions. A through hole is reserved in the center of the sealing plug 9 for external cables to pass through and connect to the end of the grounding connection screw.

[0034] As can be seen from the above, this utility model, through its independent two-cavity design, combined with a threaded connection structure and a sealing structure, improves waterproofing while ensuring reliable grounding; the radial mounting platform 302 of the grounding ring 3 optimizes the force distribution of the grounding connection screw, which can prevent loosening caused by vibration.

[0035] Specifically, a cylindrical armor layer 6 is fixed inside the grounding chamber 1, and the outer wall of the armor layer 6 can fit against the inner surface of the grounding ring 3 for fixing the grounding ring 3.

[0036] It is understood that the outer diameter of the armor layer 6 and the inner diameter of the metal ring 301 of the grounding ring 3 are designed with an interference fit to ensure that the outer wall of the armor layer 6 is tightly fitted to the inner surface of the grounding ring 3. The axial height of the armor layer 6 is greater than 1.2 times the height of the grounding ring 3 to completely cover the contact area of ​​the grounding ring 3. During assembly, the grounding ring 3 is first pressed in axially along the outer wall of the armor layer 6, and the radial pressure generated by the interference fit makes the inner surface of the grounding ring 3 form a gapless contact with the outer wall of the armor layer 6.

[0037] Specifically, the grounding chamber 1 is provided with a reserved hole 7, and the grounding connection screw passes through the reserved hole 7 and is threadedly connected to the grounding lead-out bolt 303.

[0038] It is understood that the reserved hole 7 is a through hole, and its inner wall is machined with a standard internal thread that matches the external thread of the grounding connection screw. The axis of the reserved hole 7 coincides with the axis of the threaded hole of the grounding ring 3, and the distance between the two is controlled by the thickness of the side wall of the chamber to ensure that the grounding connection screw can accurately penetrate the side wall of the grounding chamber 1 and engage with the threaded hole when screwed in.

[0039] It is easy to understand that this utility model eliminates the traditional nut locking structure by using the direct thread design of the reserved hole 7 and the grounding lead bolt 303, reducing the number of assembly parts. At the same time, the large contact area of ​​the thread meshing surface can improve the anti-loosening ability and ensure long-term stable grounding performance.

[0040] Specifically, the grounding chamber 1 and the wiring chamber 2 are made of semi-flexible plastic with a high waterproof rating, and the internal insulation material of the grounding chamber 1 and the wiring chamber 2 is a two-component strong adhesive.

[0041] In one preferred embodiment, the grounding chamber 1 and the wiring chamber 2 are made of thermoplastic polyurethane or EPDM rubber as the substrate, with a wall thickness of 3-5 mm to meet the waterproofing requirements. The two-component strong adhesive is an epoxy resin-polyamide system, which has a high volume resistivity after curing. Before assembling the chambers, the mixed adhesive can also be uniformly applied to the inner walls and joints of the grounding chamber 1 and the wiring chamber 2, with a coating thickness of 0.5-1 mm, to ensure complete coverage of the contact interface between the metal components and the chambers, forming a continuous insulating layer after curing.

[0042] Specifically, the grounding chamber 1 is internally connected to the core wire of the lighting cable, and has an inlet end for the core wire to enter. A grounding assembly 10 is movably connected to one side of the inlet end. The grounding chamber 1 is connected to the wiring chamber 2 on the side opposite to the inlet end, and a sealing ring 8 is provided on the outside of this side, while a sealing plug 9 is provided inside. The grounding assembly 10 is a detachable structure, including a sealing ring, a washer kit, a grounding braided wire, and a nut. Tightening the nut secures the sealing ring, washer kit, and grounding braided wire together. The first end of the wiring chamber 2 has an internal thread, which forms a threaded connection with the grounding chamber 11. A T-shaped sealing ring 11 and a sealing cap 12 are detachably fitted sequentially on the outer periphery of the second end of the wiring chamber 2, with the T-shaped sealing ring 11 and the sealing cap 12 providing an axial sealing fit.

[0043] The following describes in detail the operating steps for using the navigation light injection cable connector disclosed in this application.

[0044] Construction preparation and pretreatment: Use wire strippers to strip the insulation layer at the end of the lighting cable and transformer connector to expose the core wire. The stripped core wire length is 30±2mm, and the oxide layer is removed.

[0045] Core wire connection and grounding assembly 10: Pass the core wire end of the lighting cable sequentially through the sealing cap 12 and the sealing ring 8, then through the grounding chamber 1; place the grounding ring 3 and the sealing plug 9 sequentially inside the grounding chamber 1, with the inner diameter of the sealing plug 9 interfering with the outer diameter of the cable. Pass the core wire end of the transformer connector sequentially through the sealing cap 12, the T-shaped sealing ring 11, and the wiring chamber 2. Use a cold-pressed tubing to connect the core wire, and crimp securely using hydraulic cold-pressing pliers.

[0046] Grounding bolt installation and armor layer 6 fixing: Adjust the position of grounding ring 3 so that it fits into armor layer 6 and ensures that the screw hole of grounding ring 3 is coaxial with the reserved hole 7 of grounding chamber 1; insert the grounding bolt through the reserved hole 7, screw it into the screw hole of grounding ring 3, and tighten it so that grounding ring 3 and armor layer 6 fit tightly together.

[0047] Grounding wire connection and sealing treatment: Insert the sealing ring 8, washer kit, grounding braided wire, and nut into the grounding bolt in sequence; tighten the nut to make the sealing ring 8, grounding wire and bolt in tight contact.

[0048] Encapsulation and sealing of grounding chamber 1: Tighten the sealing cap at the cable inlet end, and inject two-component epoxy resin glue from the glue injection port at the top of grounding chamber 1 using a high-pressure glue gun.

[0049] Chamber docking and mechanical locking: Align the threads of grounding chamber 1 with the threads of wiring chamber 2, rotate and tighten to ensure tight and fixed contact between the end faces of the two chambers.

[0050] Filling and final sealing of wiring chamber 2: Inject polyurethane sealant vertically from filling port 13, embed T-shaped sealing ring 11, tighten sealing cap 12 to complete waterproof sealing.

[0051] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A runway light flood cable connector, characterized by, It includes a grounding chamber (1) and a wiring chamber (2), which are detachably connected. The grounding chamber (1) is provided with a grounding connection screw, a grounding ring (3) and a sealing plug (9). The grounding ring (3) includes a metal ring (301), and the outer peripheral wall of the metal ring (301) is radially provided with an installation platform (302).

2. The navigation light injection-type cable connector according to claim 1, characterized in that, A grounding lead-out bolt (303) is provided on the installation platform (302), and the grounding lead-out bolt (303) allows the grounding connection screw to pass through for installation; the grounding chamber (1) is provided with a reserved hole (7).

3. The navigation light injection-type cable connector according to claim 1, characterized in that, The grounding chamber (1) is fixed with a cylindrical armor layer (6), and the outer wall of the armor layer (6) can fit against the inner surface of the grounding ring (3) for fixing the grounding ring (3).

4. The navigation light injection-type cable connector according to claim 2, characterized in that, The grounding connection screw passes through the reserved hole (7) and is threadedly connected to the grounding lead-out bolt (303).

5. The navigation light injection-type cable connector according to claim 1, characterized in that, The core wires between the grounding chamber (1) and the wiring chamber (2) are crimped with sleeves. The grounding chamber (1) and the wiring chamber (2) are made of semi-flexible plastic with a high waterproof rating. The internal insulation material of the grounding chamber (1) and the wiring chamber (2) is a two-component adhesive with high insulation strength.

6. The navigation light injection-type cable connector according to claim 1, characterized in that, The grounding chamber (1) is connected to the core wire of the light cable, and has an inlet end for the core wire of the light cable to enter. A grounding component (10) is movably connected to one side of the inlet end. The grounding chamber (1) is connected to the wiring chamber (2) on the side opposite to the incoming line end, and a sealing ring (8) is provided on the outside of the grounding chamber (1) on the side opposite to the incoming line end, and a sealing plug (9) is provided inside the grounding chamber (1) on the side opposite to the incoming line end.

7. The navigation light injection-type cable connector according to claim 6, characterized in that, The grounding assembly (10) is a detachable structure, including a sealing ring, a washer kit, a grounding braided wire and a nut, and the sealing ring, washer kit and grounding braided wire are securely connected by tightening the nut.

8. The navigation light injection-type cable connector according to claim 1, characterized in that, The first end of the wiring chamber (2) is provided with an internal thread, which forms a threaded connection with the grounding chamber (1); the outer periphery of the second end of the wiring chamber (2) is sequentially fitted with a T-shaped sealing ring (11) and a sealing cap (12), which are axially sealed to each other.

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