Line retrofit kit with built-in waterproof seal

Abstract

The utility model relates to the technical field of junction box, disclose a line refit package built -in waterproof sealing device, including junction box body, the rear side fixed connection of junction box body has two connecting devices, the front side fixed connection of connecting device has junction box cover, the bottom of junction box cover sets up in the top of junction box body, the outside both ends of junction box body all are fixedly connected with two line joint components. In the utility model, the junction box is pasted with the groove through the sealing rubber strip, the line is wrapped with the soft rubber sealing head, the radial deformation is realized with the rubber sealing pad, the fourfold protection design of the sealing of the reduced diameter conical head and the locking nut taper surface, effectively blocks the water vapor invasion, simultaneously adopts the mechanical locking structure of slide buckle and positioning block clamping, eliminates the hidden danger of traditional screw loosening because of vibration, guarantees the reliable sealing, simplifies the operation process, and greatly improves the work efficiency and maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and in particular to a waterproof sealing device built into a wiring modification kit. Background Technology

[0002] The waterproof sealing device built into the wiring modification kit is a component used to prevent water or liquid from seeping into the wiring connections and to protect the internal wiring and equipment from water damage. It usually uses rubber sealing rings, gaskets or adjustable sealing structures to achieve a tight seal by squeezing or wrapping. Some devices also have a water-swelling function to enhance the waterproof effect.

[0003] In the prior art, the waterproof sealing device built into some wiring modification kits consists of a box body, a box cover, a sealing ring, a terminal block and fasteners. The box body and the box cover are tightly fitted by the sealing ring to achieve waterproof sealing, and the terminal block is used to connect wires to ensure stable electrical connection.

[0004] However, in the existing technology, some wiring modification kits have built-in waterproof sealing devices that are not sealed properly, allowing rainwater or moisture to enter. This causes the insulation performance of the internal wiring to deteriorate due to moisture, and the terminals to loosen due to vibration, leading to safety hazards such as short circuits and fires. Therefore, a wiring modification kit with built-in waterproof sealing device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a built-in waterproof sealing device for a circuit modification kit, aiming to improve the problem that the waterproof sealing devices built into some existing circuit modification kits are prone to failure and require time and effort to install and disassemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wiring modification kit with a built-in waterproof sealing device, including a junction box body, two connecting devices fixedly connected to the rear side of the junction box body, a junction box cover fixedly connected to the front side of the connecting devices, the bottom of the junction box cover being disposed on the top of the junction box body, and two wiring connector assemblies fixedly connected to both outer ends of the junction box body.

[0007] As a further description of the above technical solution: a lower sealing ring is fixedly connected to the top of the junction box, and a sealing strip is fixedly connected to the top of the lower sealing ring;

[0008] As a further description of the above technical solution: an upper sealing ring is fixedly connected to the bottom of the junction box cover, and a groove is provided inside the upper sealing ring; the outer side of the sealing strip is slidably connected to the inner wall of the groove.

[0009] As a further description of the above technical solution: the line connector assembly includes a connecting tube, the end of which is fixedly connected to the outside of the junction box, and a soft rubber sealing head is fixedly connected inside the connecting tube, and an annular edge sealing sheet is provided inside the soft rubber sealing head.

[0010] As a further description of the above technical solution: the internal thread of the connecting pipe is connected to a threaded connector, and the external surface of the threaded connector is slidably connected to a rubber sealing gasket, the external surface of the rubber sealing gasket being in contact with the head end of the connecting pipe;

[0011] As a further description of the above technical solution: the external thread of the threaded connector is connected to a positioning nut, the outside of the positioning nut is in contact with the outside of the rubber sealing gasket, the first end of the threaded connector is fixedly connected to a reducing diameter tapered head, the external thread of the threaded connector is connected to a closing locking nut, and the outside of the reducing diameter tapered head is slidably connected to the inside of the closing locking nut.

[0012] As a further description of the above technical solution: two fixing blocks are fixedly connected to the front side of the junction box body, the top of the two fixing blocks is located at the bottom of the lower sealing ring, a connecting post is fixedly connected inside the two fixing blocks, and a buckle is slidably connected to the outside of the two connecting posts.

[0013] As a further description of the above technical solution: two positioning blocks are fixedly connected to the top front side of the junction box cover, and the outer side of the positioning blocks is slidably connected to the inner side of the buckle.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, when the box lid is closed, the sealing strip is squeezed and tightly fits the groove to form the first barrier. The soft rubber sealing head elastically wraps the line to achieve dynamic sealing. When the threaded pipe is connected, the rubber sealing gasket deforms radially to form static sealing. The reduced diameter conical head and the locking nut form a conical surface seal. The four-fold protection effectively prevents water vapor from entering.

[0016] 2. In this utility model, the lid is fixed by the snap-fit ​​of the sliding buckle and the positioning block, which completely eliminates the risk of loosening caused by vibration due to the traditional screw fixing method, ensures the reliability of the seal, and simplifies the installation and disassembly process. It can be operated quickly without the aid of tools, which greatly improves work efficiency and maintenance convenience. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a waterproof sealing device built into a circuit modification kit according to the present invention;

[0018] Figure 2This is a schematic diagram of the structure of the buckle of the built-in waterproof sealing device of the circuit modification package proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the positioning nut for a built-in waterproof sealing device in a circuit modification kit, as proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of a locking nut for a waterproof sealing device built into a circuit modification kit, as proposed in this utility model.

[0021] Legend:

[0022] 1. Junction box body; 2. Connecting device; 3. Junction box cover; 4. Upper sealing ring; 5. Groove; 6. Lower sealing ring; 7. Sealing strip; 8. Connecting pipe; 9. Soft rubber sealing head; 10. Annular edge sealing sheet; 11. Threaded connecting pipe; 12. Rubber sealing gasket; 13. Positioning nut; 14. Reduced diameter tapered head; 15. Closing lock nut; 16. Fixing block; 17. Connecting column; 18. Buckle; 19. Positioning block. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 , Figure 4This utility model provides an embodiment of a wiring modification kit with a built-in waterproof sealing device, including a junction box body 1. Two connecting devices 2 are fixedly connected to the rear side of the junction box body 1. These connecting devices 2 are used to achieve a stable connection between the junction box body 1 and the junction box cover 3 and to transmit closing force. The junction box cover 3 is fixedly connected to the front side of the connecting devices 2. The bottom of the junction box cover 3 is located at the top of the junction box body 1, and its bottom is designed with a sealing device to form a waterproof structure, facilitating precise alignment and closure with the box body and providing protection. Two line connector assemblies are fixedly connected to both ends of the junction box body 1. These assemblies are symmetrically distributed to achieve multi-line access functionality. A lower sealing ring 6 is fixedly connected to the top of the junction box body 1, and a sealing strip 7 is fixedly connected to the top of the lower sealing ring 6. The sealing strip 7 is made of elastic silicone material and has compression rebound properties. To adapt to sealing requirements under different closing pressures, an upper sealing ring 4 is fixedly connected to the bottom of the junction box cover 3. The upper sealing ring 4 has a groove 5 inside, which is annular in structure. Its sidewall matches the shape and direction of the sealing strip 7. The outer side of the sealing strip 7 is slidably connected to the inner wall of the groove 5. When closed, it generates radial compression deformation to form the first waterproof barrier. The line connector assembly includes a connecting tube 8. The end of the connecting tube 8 is fixedly connected to the outside of the junction box body 1. Its tube body is fixed by a threaded connection, which is convenient for disassembly and maintenance. A soft rubber sealing head 9 is fixedly connected inside the connecting tube 8. The diameter of the central through hole of the soft rubber sealing head 9 is slightly smaller than the outer diameter of the line. An annular edge sealing sheet 10 is provided inside the soft rubber sealing head 9. The annular edge sealing sheet 10 adopts a wavy pleated structure and achieves dynamic sealing between the line and the connector through elastic wrapping.

[0025] The connecting pipe 8 is internally threaded to a threaded connector 11. The outer wall of the threaded connector 11 has double-ended threads to improve connection strength. A rubber sealing gasket 12 is slidably connected to the outside of the threaded connector 11. The outer diameter of the rubber sealing gasket 12 is larger than the inner diameter of the connecting pipe 8 to form a pre-compression seal. The outer surface of the rubber sealing gasket 12 contacts the beginning of the connecting pipe 8, and the contact surface is frosted to enhance friction and prevent loosening. A positioning nut 13 is externally threaded to the threaded connector 11. The positioning nut 13 has an anti-loosening toothed structure, and axial compression of the rubber sealing gasket 12 is achieved through rotation. The positioning nut 13 is in contact with the outside of the rubber sealing gasket 12. The first end of the threaded connector 11 is fixedly connected to a reduced-diameter tapered head 14. The surface of the reduced-diameter tapered head 14 is provided with an annular sealing groove, which forms a tapered surface seal by cooperating with the locking nut. The threaded connector 11 is externally threadedly connected to a tapered locking nut 15. The inner wall of the tapered locking nut 15 is provided with a tapered surface. When rotated, an axial thrust is generated, causing the tapered head to undergo elastic deformation. The outside of the reduced-diameter tapered head 14 is slidably connected to the inside of the tapered locking nut 15. The secondary seal of the joint is achieved through the tapered surface cooperation.

[0026] Reference Figure 2 , Figure 3 Two fixing blocks 16 are fixedly connected to the front side of the junction box body 1. The top of the two fixing blocks 16 is set at the bottom of the lower sealing ring 6. A gap is left between the inner side of the buckle 18 and the front side of the lower sealing ring 6 so that it does not affect the use of the lower sealing ring 6 when flipped and snapped. A connecting post 17 is fixedly connected inside the two fixing blocks 16. The connecting post 17 adopts a cylindrical design and has an anti-disengagement groove on the surface. The buckle 18 is slidably connected to the outside of the two connecting posts 17. The buckle 18 has a U-shaped structure and a guide slope on its inner side to facilitate the sliding of the positioning block 19. Two positioning blocks 19 are fixedly connected to the top front side of the junction box cover 3. The positioning block 19 adopts a wedge design and its slope angle matches the guide slope of the buckle 18. The outside of the positioning block 19 is slidably connected to the inside of the buckle 18. The mechanical locking between the cover and the box body is achieved through the snap-fit ​​cooperation.

[0027] Working principle: The lower sealing ring 6 and the upper sealing ring 4 fixedly installed on the top of the junction box 1 form a sealing base frame. The sealing strip 7 on the top of the lower sealing ring 6 and the groove 5 inside the upper sealing ring 4 form a sliding insertion structure. When the junction box cover 3 is closed by the connecting device 2, the sealing strip 7 is squeezed and deformed, and its outer wall is tightly fitted with the inner wall of the groove 5, forming the first waterproof barrier, effectively preventing external moisture from seeping in from the joint between the box body and the cover. In the line connector assembly, the soft rubber sealing head 9 inside the connecting tube 8 forms an elastic sealing structure through the annular edge sealing plate 10. When the line passes through the soft rubber sealing head 9, the annular edge sealing plate 10 is squeezed. The outer wall of the circuit is wrapped with a pressure seal, and the elastic recovery force of the soft rubber material is used to achieve dynamic sealing to prevent moisture from entering through the gap between the circuit and the joint. When the threaded pipe 11 is threadedly connected to the connecting pipe 8, the rubber sealing gasket 12 is squeezed by the positioning nut 13 and undergoes radial deformation. Its outer wall is tightly fitted with the inner wall of the first end of the connecting pipe 8 to form a second static seal. At the same time, the tapered head 14 at the first end of the threaded pipe 11 and the locking nut 15 form a conical sealing structure. When the locking nut 15 is tightened, the tapered head 14 is squeezed and undergoes axial displacement. Its conical surface forms a line contact seal with the inner wall of the locking nut 15, further enhancing the waterproof performance of the joint.

[0028] The connecting post 17 and the buckle 18 inside the fixing block 16 on the front side of the junction box 1 form a sliding connection mechanism. The positioning block 19 on the front top of the junction box cover 3 and the inner side of the buckle 18 form a snap-fit ​​engagement. When the junction box cover 3 is closed, the buckle 18 is pushed to slide along the connecting post 17, so that the positioning block 19 is embedded in the inner side of the buckle 18, thereby achieving mechanical locking between the cover and the box body. This design replaces the traditional screw fixing method, avoids the sealing failure problem caused by the screw loosening due to vibration, and improves the efficiency of installation and disassembly.

[0029] Finally, it should be noted that the above description is only 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 line retrofit kit with built-in waterproof seal comprising a terminal block body (1) characterised in that: Two connecting devices (2) are fixedly connected to the rear side of the junction box body (1), and a junction box cover (3) is fixedly connected to the front side of the connecting device (2). The bottom of the junction box cover (3) is located on the top of the junction box body (1), and two line connector assemblies are fixedly connected to both ends of the outer side of the junction box body (1).

2. A line retrofit kit with built-in waterproof seal according to claim 1, wherein: A lower sealing ring (6) is fixedly connected to the top of the junction box (1), and a sealing strip (7) is fixedly connected to the top of the lower sealing ring (6).

3. A line retrofit kit with built-in waterproof seal according to claim 2, wherein: The bottom of the junction box cover (3) is fixedly connected to an upper sealing ring (4), and a groove (5) is provided inside the upper sealing ring (4). The outer side of the sealing strip (7) is slidably connected to the inner wall of the groove (5).

4. A retrofit kit for a line according to claim 1, characterized in that: The line connector assembly includes a connecting tube (8), the end of which is fixedly connected to the outside of the junction box (1), and a soft rubber sealing head (9) is fixedly connected inside the connecting tube (8), and an annular edge sealing sheet (10) is provided inside the soft rubber sealing head (9).

5. A line retrofit kit with built-in waterproof seal according to claim 4, wherein: The connecting pipe (8) is internally threaded with a threaded connector (11), and a rubber sealing gasket (12) is slidably connected to the outside of the threaded connector (11). The outside of the rubber sealing gasket (12) is in contact with the head end of the connecting pipe (8).

6. A line retrofit kit with built-in waterproof seal according to claim 5, wherein: The threaded connector (11) is externally threaded with a positioning nut (13), the outside of which is in contact with the outside of the rubber sealing gasket (12). The first end of the threaded connector (11) is fixedly connected with a reduced-diameter tapered head (14), and the external thread of the threaded connector (11) is connected with a closing locking nut (15). The outside of the reduced-diameter tapered head (14) is slidably connected to the inside of the closing locking nut (15).

7. The built-in waterproof sealing device of the circuit modification kit according to claim 2, characterized in that: Two fixing blocks (16) are fixedly connected to the front side of the junction box (1). The top of the two fixing blocks (16) is located at the bottom of the lower sealing ring (6). A connecting post (17) is fixedly connected inside the two fixing blocks (16), and a buckle (18) is slidably connected to the outside of the two connecting posts (17).

8. The built-in waterproof sealing device of the circuit modification kit according to claim 7, characterized in that: Two positioning blocks (19) are fixedly connected to the top front side of the junction box cover (3), and the outside of the positioning blocks (19) is slidably connected to the inside of the buckle (18).

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