A waterproof junction box for installing equipment in a tunnel

Abstract

The application relates to the technical field of waterproof junction boxes, and provides a waterproof junction box for installing equipment in a tunnel, which comprises a box body and a box cover; the box cover is hinged to one side of the box body; a ventilation structure is arranged at the middle position of the box cover; a wiring port is arranged at the bottom end of the box body; and a sealing ring is arranged in the wiring port. The ventilation structure is arranged to install the mounting seat and the threaded hole in threaded connection, the mounting ring is arranged in the mounting cavity, the top seat is rotated to form threaded connection with the mounting cavity, the bottom end of the top seat is in abutment with the top end of the mounting ring to limit the mounting ring, air enters the inside through the ventilation holes, the waterproof and air-permeable film is used for air-permeable treatment to realize air circulation and prevent water, so that the inside of the box body is subjected to air circulation, and the influence of the temperature difference between the inside and the outside on the inside is prevented.

Description

Technical Field

[0001] This invention relates to the field of waterproof junction box technology, and in particular to a waterproof junction box for installing equipment in tunnels. Background Technology

[0002] Various equipment inside the tunnel are connected, powered, and controlled through various power lines and signal lines, and waterproof junction boxes are indispensable components at the connection, branching, conversion, and protection nodes of these lines; To address this, patent CN110581466A discloses a waterproof junction box. This waterproof junction box includes a body and a cover. At least two sides of the cover include a first lug and a second lug. The outer surfaces of the body corresponding to the at least two sides are respectively provided with a third lug and a fourth lug, corresponding to the first and second lugs. The third lug has a slot for inserting the first lug. The second and fourth lugs are connected by fasteners. This waterproof junction box allows for the fastening of the cover and body using pins, slots, and screws, resulting in a simple structure and easy assembly. The aforementioned waterproof junction box is sealed using sealing components during use, but it is difficult to allow air circulation inside. When the device is placed inside a tunnel, the internal and external temperatures may differ, leading to condensation and damage to the internal electronic components. Furthermore, the device relies solely on sealing rings for sealing, which affects its waterproof performance. Summary of the Invention

[0003] The purpose of this invention is to provide a waterproof junction box for equipment installed in tunnels, thereby solving the problems of existing waterproof junction boxes for equipment installed in tunnels, which are inconvenient for internal air circulation and have poor waterproof performance. Insufficient defects.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a waterproof junction box for installing equipment in a tunnel, comprising a box body and a box cover; A lid is hinged to one side of the box body, and a ventilated structure is provided in the middle of the lid. The bottom of the box body is provided with a wiring port, and a sealing ring is provided inside the wiring port. A support structure is hinged inside the box body. A locking structure is evenly fixed on the outer wall of the box cover. A mounting groove is provided on one side of the box body, and a sealing gasket is provided inside the mounting groove. The locking structure includes L-shaped blocks evenly fixed to the outer wall of the box lid and fixing seats evenly fixed to the outer wall of the box. The fixing seats have a sliding groove inside, and the fixing seats on both sides of the sliding groove have reserved grooves inside. The reserved grooves are equipped with pressing blocks inside. The sliding groove has a movable seat inside. A snap-fit ​​sleeve is hinged to one side of the movable seat. A return spring is fixed to one side of the movable seat. The movable seat has built-in grooves on both sides. The built-in grooves are equipped with sliding columns inside. A locking spring is fixed to one side of the sliding column.

[0005] Preferably, the breathable structure includes a threaded hole at the middle of the lid, a mounting seat inside the threaded hole, a sealing ring on the outer wall of the mounting seat, a mounting cavity at the top of the mounting seat, a mounting ring inside the mounting cavity, a waterproof and breathable membrane on the inner wall of the mounting ring, a top seat inside the mounting cavity, and a breathable hole on the outer wall of the top seat.

[0006] Preferably, the threaded hole is threadedly connected to the mounting base, and the waterproof and breathable membrane is expanded polytetrafluoroethylene.

[0007] Preferably, the top seat is threadedly connected to the mounting cavity, the bottom end of the top seat abuts against the top end of the mounting ring, and the vent holes are evenly distributed on the outer wall of the top seat.

[0008] Preferably, the support structure includes support rods that are all hinged to the inside of the box and fixing blocks that are uniformly fixed to the bottom of the box lid. The top of the support rod is hinged to a hinge block, and a fixing shaft is fixed to one side of each fixing block.

[0009] Preferably, the support rods are symmetrically distributed inside the box, and the fixing blocks are evenly distributed at the bottom of the box cover.

[0010] Preferably, the fixed shaft is disposed inside the hinge block, and the hinge block and the fixed shaft are slidably connected.

[0011] Preferably, the L-shaped blocks are evenly distributed on the outer wall of the lid, and the fixing seats are evenly distributed on the outer wall of the box body.

[0012] Preferably, the movable seat is slidably connected inside the reserved slot, the L-shaped block is disposed inside the snap-fit ​​sleeve, and the L-shaped block and the snap-fit ​​sleeve are in a snap-fit ​​structure.

[0013] Preferably, the sliding post is disposed inside the reserved groove, the sliding post and the reserved groove are in an engaging structure, and the sliding post abuts against one side of the pressing block.

[0014] The present invention provides a waterproof junction box for installing equipment in a tunnel, the advantages of which are: By incorporating a breathable structure, the mounting base is connected to the threaded hole via a threaded connection for installation. The mounting ring is placed inside the mounting cavity, and the top seat is rotated to form a threaded connection with the mounting cavity, with its bottom end abutting against the top end of the mounting ring to limit its position. This allows gas to enter the interior through the vent holes. The waterproof and breathable membrane facilitates air circulation while blocking water, thus achieving the goal of facilitating air circulation inside the box and preventing the temperature difference between the inside and outside from affecting its interior. By incorporating a locking structure, the lid is placed on top of the box body, creating a locking mechanism between the snap-fit ​​sleeve and the L-shaped block to position the lid. This component is evenly distributed on the outer wall of the box body, and the snap-fit ​​sleeve can be easily pulled to rotate it to one side of the L-shaped block, moving it away from the outer wall of the L-shaped block to release the positioning. This facilitates locking and opening the lid, thereby further enhancing the sealing effect between the box body and the lid. By incorporating a support structure, the hinge block slides on the outer wall of the fixed shaft after the lid is rotated open, forming a triangle between the box body, the lid, and the fixed shaft. This supports the lid, facilitating maintenance of the internal electronic components by the operator, thereby achieving [the desired effect]. The purpose is to improve the ease of use of the device. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional schematic diagram of the present invention; Figure 2 This is a frontal three-dimensional schematic diagram of the present invention; Figure 3 This is a frontal three-dimensional schematic diagram of the breathable structure of the present invention; Figure 4 This is a partial top-view three-dimensional schematic diagram of the present invention; Figure 5 This is a frontal three-dimensional schematic diagram of the support structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the invention viewed from below; Figure 7 This is a partial three-dimensional cross-sectional schematic diagram of the present invention; Figure 8 This is an enlarged schematic diagram of point A in the present invention.

[0016] The following are the annotations in the diagram: 1. Box body; 2. Box lid; 3. Ventilation structure; 301. Threaded hole; 302. Mounting base; 303. Sealing ring; 304. Mounting cavity; 305. Mounting ring; 306. Waterproof and breathable membrane; 307. Top seat; 308. Vent hole; 4. Connection port; 5. Sealing ring; 6. Support structure; 601. Support rod; 602. Fixing block; 603. Hinge block; 604. Fixing shaft; 7. Locking structure; 701. L-shaped block; 702. Fixing base; 703. Slide groove; 704. Reserved groove; 705. Pressing block; 706. Moving seat; 707. Snap-fit ​​sleeve; 708. Return spring; 709. Internal groove; 710. Sliding column; 711. Locking spring; 8. Mounting groove; 9. Sealing gasket. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1 - Figure 8 The present invention provides a waterproof junction box for installing equipment in a tunnel, comprising a box body 1 and a box cover 2.

[0019] Reference Figure 1 and Figure 3 As shown, a lid 2 is hinged to one side of the box body 1. A ventilated structure 3 is provided in the middle of the lid 2. The ventilated structure 3 includes a threaded hole 301 in the middle of the lid 2. A mounting base 302 is provided inside the threaded hole 301. A sealing ring 303 is provided on the outer wall of the mounting base 302. A mounting cavity 304 is provided at the top of the mounting base 302. A mounting ring 305 is provided inside the mounting cavity 304. A waterproof and breathable membrane 306 is provided on the inner wall of the mounting ring 305. A top seat 307 is provided inside the mounting cavity 304. A ventilated hole 308 is provided on the outer wall of the top seat 307. The threaded hole 301 is threadedly connected to the mounting base 302. The waterproof and breathable membrane 306 is expanded polytetrafluoroethylene. The top seat 307 is threadedly connected to the mounting cavity 304. The bottom end of the top seat 307 abuts against the top end of the mounting ring 305. The ventilated holes 308 are evenly distributed on the outer wall of the top seat 307.

[0020] During the use of junction boxes for equipment installation inside tunnels, to prevent water vapor from forming inside the box 1 due to temperature differences between the box body 1 and the external environment, ventilation is required. This is achieved by incorporating a breathable structure 3. The mounting base 302 is installed on the top of the box cover 2 via a threaded connection formed by a threaded hole 301 and a mounting seat 302. A sealing ring 303 on the outer wall of the mounting base 302 seals the connection. An mounting ring 305 is installed inside the mounting cavity 304, and a waterproof and breathable membrane 306 is installed on its inner wall. The waterproof and breathable membrane 306 is made of expanded polytetrafluoroethylene (ePTFE), allowing for ventilation between the inside of the box 1 and the external environment while preventing water from entering the box 1. Furthermore, to prevent punctures caused by external forces, the waterproof and breathable membrane 306 is also protected. Furthermore, the ventilation holes 308 are opened on the outer wall of the top seat 307 to effectively prevent the external environment from affecting the waterproof and breathable membrane 306. This allows the interior of the box 1 to be ventilated and prevents moisture from entering the interior of the box 1 and damaging the internal electronic components, thereby greatly increasing the functionality of the device.

[0021] Reference Figure 4 and Figure 5 As shown, a wiring port 4 is provided at the bottom of the box body 1, and a sealing ring 5 is provided inside the wiring port 4. A support structure 6 is hinged inside the box body 1. The support structure 6 includes support rods 601 that are all hinged inside the box body 1 and fixing blocks 602 that are evenly fixed to the bottom of the box cover 2. A hinge block 603 is hinged to the top of the support rod 601. A fixing shaft 604 is fixed to one side of each fixing block 602. The fixing blocks 602 are symmetrically distributed inside the box body 1, and the fixing blocks 602 are evenly distributed at the bottom of the box cover 2. The fixing shaft 604 is located inside the hinge block 603, and the hinge block 603 and the fixing shaft 604 are slidably connected.

[0022] During the use of this device, it is often necessary to open it to operate and maintain the internal components. A support structure 6 is provided, with a support rod 601 rotatably connected to the top of the housing 1, and a hinge block 603 hinged on one side slidingly connected to the outer wall of the fixed shaft 604. When the lid 2 is closed, the hinge block 603 slides to one side of the fixed shaft 604 to store the support rod 601. When the lid 2 is opened, it forms a triangular design with the housing 1 and the support rod 601, thus supporting the lid 2 and preventing it from rotating at the top of the housing 1. After maintenance, the hinge block 603 can be manually slid to one side of the fixed shaft 604 to close the lid 2, greatly increasing the convenience of the device during use.

[0023] Reference Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, locking structures 7 are evenly fixed on the outer wall of the lid 2, and a mounting groove 8 is provided on one side of the box body 1. A sealing gasket 9 is provided inside the mounting groove 8. The locking structure 7 includes L-shaped blocks 701 evenly fixed on the outer wall of the lid 2 and fixing seats 702 evenly fixed on the outer wall of the box body 1. A sliding groove 703 is provided inside the fixing seat 702. Reserved grooves 704 are provided inside the fixing seats 702 on both sides of the sliding groove 703. Pressing blocks 705 are provided inside the reserved grooves 704, and movable seats 705 are provided inside the sliding groove 703. 6. A snap-fit ​​sleeve 707 is hinged to one side of the movable seat 706. A return spring 708 is fixed to one side of the movable seat 706. Built-in grooves 709 are formed on both sides of the movable seat 706. A sliding post 710 is installed inside the built-in groove 709. A locking spring 711 is fixed to one side of the sliding post 710. L-shaped blocks 701 are evenly distributed on the outer wall of the cover 2. Fixed seats 702 are evenly distributed on the outer wall of the box body 1. The movable seat 706 is slidably connected inside the reserved groove 704. The L-shaped blocks 701 are set in the snap-fit ​​sleeve. Inside 707, the L-shaped block 701 and the snap-fit ​​sleeve 707 are in a snap-fit ​​structure, and the sliding post 710 is set in the reserved groove. Inside 704, the sliding column 710 and the reserved groove 704 are in a locking structure, and the sliding column 710 and one side of the pressing block 705 are in contact with each other.

[0024] To prevent water from entering the interior of box 1 through gaps after the lid 2 is closed on top of box 1, a sealing gasket 9 is installed inside the mounting groove 8 to seal the wiring and prevent water from entering. The slot 8 enters the interior of the box body 1, and a sealing ring 5 is provided between the box body 1 and the lid 2 to seal the connection. In order to quickly close and lock the lid 2 and improve the sealing effect, a locking structure 7 is provided. After the lid 2 is closed on the top of the box body 1, pressing the pressing blocks 705 on both sides of the fixing seat 702 pushes the sliding column 710 away from the interior of the reserved slot 704, thereby releasing the locking position. This makes it easy to pull the moving seat 706 to slide inside the slide groove 703 through the snap-fit ​​sleeve 707. This makes it easy to put the snap-fit ​​sleeve 707 on one side of the L-shaped block 701 and release the snap-fit ​​sleeve 707. Under the influence of the elastic force of the locking spring 711, the moving seat 706 slides inside the slide groove 703, and the sliding column 710 moves to one side of the reserved slot 704. A locking spring 711 is fixed on one side of the moving column 710, so that the sliding column 710 is always affected by the elastic force of the locking spring 711 inside the built-in groove 709. This causes the sliding column 710 to move into the reserved groove 704 and cause the pressing block 705 to abut against the sliding column 710. The pressing block 705 is pushed to move to the outside of the fixed seat 702, thereby positioning the moving seat 706 inside the sliding groove 703. This allows the snap-fit ​​sleeve 707 and the L-shaped block 701 to form a snap-fit ​​structure, thereby locking the lid 2. Multiple sets of this combination are provided to enhance the locking effect and further improve the sealing effect between the box body 1 and the lid 2, preventing water from entering the interior of the box body 1 through gaps and causing pollution or damage. This greatly increases the sealing effect of the device and improves its practicality.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand its significance. For those who are skilled in the art, they 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 this invention should be included within the protection scope of this invention.

Claims

1. A waterproof junction box for installing equipment in a tunnel, comprising a box body (1) and a box cover (2); Its features are: A lid (2) is hinged to one side of the box body (1), and a breathable structure (3) is provided in the middle of the lid (2); The bottom end of the box body (1) is provided with a wiring port (4), and a sealing ring (5) is provided inside the wiring port (4). The box body (1) is hinged with a support structure (6). A locking structure (7) is evenly fixed on the outer wall of the box cover (2). A mounting groove (8) is provided on one side of the box body (1), and a sealing gasket (9) is provided inside the mounting groove (8). The locking structure (7) includes an L-shaped block (701) uniformly fixed on the outer wall of the lid (2) and a fixing seat (702) uniformly fixed on the outer wall of the box body (1). The fixing seat (702) has a sliding groove (703) inside. The fixing seats (702) on both sides of the sliding groove (703) have reserved grooves (704) inside. The reserved grooves (704) are provided with pressing blocks (705). The sliding groove (703) has a movable seat (706) inside. The movable seat (706) has a snap-fit ​​sleeve (707) hinged on one side. The movable seat (706) has a return spring (708) fixed on one side. The movable seat (706) has built-in grooves (709) on both sides. The built-in grooves (709) have sliding columns (710) inside. The sliding columns (710) have a locking spring (711) fixed on one side.

2. A waterproof junction box for installing equipment in a tunnel according to claim 1, characterized in that: The breathable structure (3) includes a threaded hole (301) located in the middle of the cover (2). A mounting base (302) is provided inside the threaded hole (301). A sealing ring (303) is provided on the outer wall of the mounting base (302). A mounting cavity (304) is provided at the top of the mounting base (302). A mounting ring (305) is provided inside the mounting cavity (304). A waterproof and breathable membrane (306) is provided on the inner wall of the mounting ring (305). A top seat (307) is provided inside the mounting cavity (304). A breathable hole (308) is provided on the outer wall of the top seat (307).

3. A waterproof junction box for installing equipment in a tunnel according to claim 2, characterized in that: The threaded hole (301) is threadedly connected to the mounting base (302), and the waterproof and breathable membrane (306) is expanded polytetrafluoroethylene.

4. A waterproof junction box for installing equipment in a tunnel according to claim 2, characterized in that: The top seat (307) is threadedly connected to the mounting cavity (304), the bottom end of the top seat (307) abuts against the top end of the mounting ring (305), and the vent holes (308) are evenly distributed on the outer wall of the top seat (307).

5. A waterproof junction box for installing equipment in a tunnel according to claim 1, characterized in that: The support structure (6) includes support rods (601) that are all hinged inside the box body (1) and fixing blocks (602) that are evenly fixed to the bottom of the box cover (2). The top of the support rod (601) is hinged to a hinge block (603), and a fixing shaft (604) is fixed on one side of each fixing block (602).

6. A waterproof junction box for installing equipment in a tunnel according to claim 5, characterized in that: The support rods (601) are symmetrically distributed inside the box body (1), and the fixing blocks (602) are evenly distributed at the bottom of the box cover (2).

7. A waterproof junction box for installing equipment in a tunnel according to claim 5, characterized in that: The fixed shaft (604) is disposed inside the hinge block (603), and the hinge block (603) and the fixed shaft (604) are slidably connected.

8. A waterproof junction box for installing equipment in a tunnel according to claim 1, characterized in that: The L-shaped blocks (701) are evenly distributed on the outer wall of the lid (2), and the fixing seats (702) are evenly distributed on the outer wall of the box body (1).

9. A waterproof junction box for installing equipment in a tunnel according to claim 1, characterized in that: The movable seat (706) is slidably connected inside the reserved slot (704), and the L-shaped block (701) is disposed inside the snap-fit ​​sleeve (707). The L-shaped block (701) and the snap-fit ​​sleeve (707) are in a snap-fit ​​structure.

10. A waterproof junction box for installing equipment in a tunnel according to claim 1, characterized in that: The sliding post (710) is disposed inside the reserved groove (704), the sliding post (710) and the reserved groove (704) are in a locking structure, and the sliding post (710) and one side of the pressing block (705) abut against each other.

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