A wiring protection device for electric installation works
By designing a detachable outer shell structure and a sealed connection method, the problem of inconvenient maintenance of existing cable junction boxes has been solved, achieving convenient maintenance and efficient protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUAN JUNNENG ELECTRIC POWER TECHNOLOGY CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-29
AI Technical Summary
The existing cable junction box has a one-piece structure, which makes maintenance inconvenient.
A wiring protection device comprising a first outer casing and a second outer casing was designed. The outer casings are separable for easy maintenance through the connection of a hexagonal nut and a support plate, and the sealing is ensured by an arc-shaped limiting plate and a fastening nut.
It enables convenient maintenance operations and improves the protection of wiring points, ensuring airtightness.
Smart Images

Figure CN224305343U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of wiring protection devices, and in particular to a wiring protection device for power installation engineering. Background Technology
[0002] Electrical engineering refers to projects related to the production, transmission, and distribution of electrical energy. During the construction of electrical engineering projects, after the cables are laid, in order to make them a continuous line, the various sections of the line must be connected into a whole, which requires cable wiring.
[0003] To prevent moisture from entering the cable connections, junction boxes are needed. The cables inside the conduit are connected in the junction box, which serves to protect and connect the cables. However, most existing cable junction boxes are of one-piece design, which can cause inconvenience for maintenance personnel when it is necessary to inspect the cable connections inside the junction box.
[0004] Therefore, those skilled in the art have provided a wiring protection device for power installation engineering to solve the problems mentioned in the background art. Utility Model Content
[0005] To address the problems mentioned in the background art, this application provides a wiring protection device for power installation engineering.
[0006] The wiring protection device for power installation engineering provided in this application adopts the following technical solution:
[0007] A wiring protection device for power installation engineering includes a first outer shell and a second outer shell. The first outer shell has a U-shaped frame fixedly connected to its upper and lower surfaces. The second outer shell has a rectangular plate fixedly connected to its upper and lower surfaces, with the rectangular plates on both sides passing through the interior of the corresponding U-shaped frame. A support plate is slidably connected between the two rectangular plates. Threaded sleeves are installed at the four corners on one side of the first outer shell. Hexagonal nuts are threadedly connected to the four corners of the support plate, with one end of each of the four hexagonal nuts screwed into the corresponding threaded sleeve.
[0008] Preferably, both the first and second outer shells have semi-circular notches on both sides.
[0009] Preferably, arc-shaped limiting pieces are fixedly connected to the notches on both sides of the first and second outer shells, and protrusions are fixedly connected to both ends of the arc-shaped limiting pieces. The two protrusions that fit together are connected to a fastening nut by a common thread inside.
[0010] Preferably, a rubber pad is installed on the inner arc surface of the arc-shaped limiting piece.
[0011] Preferably, one side of each of the rectangular plates on both sides is provided with a U-shaped groove that matches the size of the end of the support plate.
[0012] In summary, this application includes the following beneficial technical effects:
[0013] 1. By loosening the hexagonal nuts at the four corners, the limiting force on the support plate is removed, allowing the support plate to slide out between the two support plates and thus removing the limiting force on the two rectangular plates. This allows the two rectangular plates to be pulled away from inside the frame, thereby separating the No. 1 and No. 2 outer shells. This facilitates maintenance personnel in inspecting the wiring points inside the No. 1 and No. 2 outer shells, providing convenience for maintenance personnel.
[0014] 2. By rotating the fastening nut, the arc-shaped limiting plates on both sides can fit tightly against the outside of the cable, ensuring the sealing of the gaps at the openings when the No. 1 and No. 2 outer shells are closed, thus improving the protection of the connection point. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of the main body of the protective device in this application;
[0016] Figure 2 This application is Figure 1 A structural diagram from a first-person perspective on the other side;
[0017] Figure 3 This is a structural schematic diagram of the main body of the first outer shell of this application.
[0018] Explanation of reference numerals in the attached drawings: 1. Outer shell No. 1; 2. Outer shell No. 2; 3. Arc-shaped limiting piece; 4. Rectangular plate; 5. C-shaped frame; 6. Hexagonal nut; 7. Support plate; 8. Threaded sleeve; 9. Rubber pad; 10. Protrusion; 11. Fastening nut. Detailed Implementation
[0019] 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.
[0020] refer to Figure 1 and Figure 2 as well as Figure 3As shown, this application discloses a wiring protection device for power installation engineering, including a first outer casing 1 and a second outer casing 2. A U-shaped frame 5 is fixedly connected to both the upper and lower surfaces of the first outer casing 1. A rectangular plate 4 is fixedly connected to both the upper and lower surfaces of the second outer casing 2, with the rectangular plates 4 passing through the interior of their respective U-shaped frames 5. A support plate 7 is slidably connected between the two rectangular plates 4. Threaded sleeves 8 are installed at each of the four corners on one side of the first outer casing 1. Hexagonal nuts 6 are threadedly connected to each of the four corners of the support plate 7, with one end of each of the four hexagonal nuts 6 screwed into the corresponding threaded sleeve 8.
[0021] By loosening the hexagonal nuts 6 at the four corners, the hexagonal nuts 6 can be moved out of the threaded sleeve 8, losing their restraint on the support plate 7. This allows the support plate 7 to slide out between the two support plates 7, thereby losing its restraint on the two rectangular plates 4. Then, the two rectangular plates 4 can be pulled out from inside the frame 5, thus separating the first outer casing 1 and the second outer casing 2. This makes it easier for maintenance personnel to inspect the wiring points inside the first outer casing 1 and the second outer casing 2.
[0022] refer to Figure 2 and Figure 3 As shown, semi-circular notches are provided on both sides of the first outer casing 1 and the second outer casing 2 to facilitate the cable to pass through the first outer casing 1 and the second outer casing 2.
[0023] refer to Figure 1 and Figure 2 as well as Figure 3 As shown, arc-shaped limiting pieces 3 are fixedly connected to the notches on both sides of the first outer shell 1 and the second outer shell 2. Protrusions 10 are fixedly connected to both ends of the arc-shaped limiting pieces 3. The two protrusions 10 that fit together are connected to a fastening nut 11 by a common thread inside. After the wiring is placed inside the first outer shell 1 and the second outer shell 2, the fastening nut 11 can be rotated to make the arc-shaped limiting pieces 3 on both sides fit tightly against the outside of the cable, ensuring the sealing of the notches when the first outer shell 1 and the second outer shell 2 are closed, and improving the protection of the wiring.
[0024] refer to Figure 2 and Figure 3 As shown, a rubber pad 9 is installed on the inner arc surface of the arc-shaped limiting piece 3. The rubber pad 9 can further improve the sealing performance at the notch of the first outer shell 1 and the second outer shell 2.
[0025] refer to Figure 2 As shown, each of the two rectangular plates 4 has a U-shaped groove on one side that matches the size of the end of the support plate 7, so that the support plate 7 can move stably between the two rectangular plates 4.
[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0028] The implementation principle of a wiring protection device for power installation engineering according to an embodiment of this application is as follows:
[0029] When maintenance is required at the wiring points, the maintenance personnel can loosen the hexagonal nuts 6 at the four corners in sequence, allowing the hexagonal nuts 6 to move out of the threaded sleeve 8 and lose their restraint on the support plate 7. This causes the support plate 7 to slide out between the two support plates 7, thereby losing its restraint on the two rectangular plates 4. Then, the two rectangular plates 4 can be pulled out from inside the U-shaped frame 5, thus separating the first outer shell 1 and the second outer shell 2. This makes it convenient for maintenance personnel to inspect the wiring points inside the first outer shell 1 and the second outer shell 2, providing convenience for maintenance personnel.
[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A wiring protection device for power installation engineering, comprising a first outer casing (1) and a second outer casing (2), characterized in that, The first outer shell (1) is fixedly connected to the upper and lower surfaces of the shell and the second outer shell (2) is fixedly connected to the upper and lower surfaces of the shell and the rectangular plates (4) on both sides pass through the corresponding shells (5). A support plate (7) is slidably connected between the two rectangular plates (4). Threaded sleeves (8) are installed at the four corners on one side of the first outer shell (1). Hexagonal nuts (6) are threaded at the four corners of the support plate (7). The outer ends of the four hexagonal nuts (6) are screwed into the corresponding threaded sleeves (8).
2. The wiring protection device for power installation engineering according to claim 1, characterized in that: Both the first outer shell (1) and the second outer shell (2) have semi-circular notches on both sides.
3. The wiring protection device for power installation engineering according to claim 1, characterized in that: Arc-shaped limiting pieces (3) are fixedly connected to the notches on both sides of the first outer shell (1) and the second outer shell (2). Both ends of the arc-shaped limiting pieces (3) are fixedly connected to protrusions (10). The two protrusions (10) that fit together are connected to a fastening nut (11) by a common thread inside.
4. A wiring protection device for power installation engineering according to claim 3, characterized in that: A rubber pad (9) is installed on the inner arc surface of the arc-shaped limiting piece (3).
5. A wiring protection device for power installation engineering according to claim 1, characterized in that: Both sides of the rectangular plate (4) have a U-shaped groove on one side that matches the size of the end of the support plate (7).