Conveniently installed combinable wire box
The modular junction box design enables flexible connection between the junction box cover and the junction box body, and allows for multi-directional wiring. This solves the problems of cumbersome installation and cement pollution associated with traditional junction boxes, and improves construction efficiency and the reliability of the electrical system.
Patent Information
- Application Number
- CN202521789992.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-21
AI Technical Summary
Traditional pre-embedded junction boxes are cumbersome to install, have difficulty in ensuring splicing accuracy, have a single wiring path, and are easily contaminated by cement, affecting construction efficiency and safety.
The design features a modular junction box, which allows for flexible flip-up connection between the junction box cover and the junction box body via a first clip and a first groove. Combined with self-tapping posts and a snap-fit structure, it provides multi-directional wire-passing holes and flange protection to ensure sealing and structural stability.
It improves the ease of junction box installation and the flexibility of wiring, reduces the risk of cement pollution, and ensures the reliability of electrical systems and the convenience of construction.
Smart Images

Figure CN224683794U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building electrical installation technology, specifically relating to a modular junction box that is easy to install. Background Technology
[0002] In building electrical installation projects, embedded junction boxes are key components used to house wire joints and connect switch or socket panels. Their performance directly affects the safety of the electrical system, construction efficiency, and ease of later maintenance. However, traditional embedded junction boxes have revealed many technical defects in practical applications, making it difficult to meet the requirements of modern building construction for efficiency, reliability, and durability.
[0003] Firstly, in terms of combined installation, when multiple junction boxes are installed side by side or stacked, additional connectors or complex snap-fit structures are usually required to splice them together. This is cumbersome, time-consuming, and the splicing accuracy is difficult to guarantee. It can easily lead to problems such as uneven gaps and poor flatness after the panel is installed, affecting the overall aesthetics.
[0004] Secondly, traditional junction boxes typically have fixed-direction wiring holes, resulting in a limited and inflexible wiring path. When the wiring route is complex or requires wires to be introduced from different directions, construction workers often have to drill holes on-site or forcibly bend the wires, which not only increases the difficulty of construction but may also damage the wire insulation, creating safety hazards.
[0005] Furthermore, during construction, especially in the masonry stage, cement mortar can easily seep into the junction box through the wiring holes or openings, causing internal contamination. Hardened cement is not only difficult to clean but also hinders subsequent wiring operations and can even affect the reliability of electrical connections. Although existing technologies use paper balls, tape, or simple plastic caps for temporary sealing, these methods generally suffer from poor sealing, easy detachment, and weak impact resistance, failing to effectively withstand frequent disturbances and wet working environments at the construction site.
[0006] Therefore, this utility model is proposed. Utility Model Content
[0007] To solve the technical problems existing in the prior art, this utility model provides a modular junction box that is easy to install.
[0008] To achieve the above objectives, the present invention adopts the following technical solution: A modular junction box with easy installation includes a junction box body and a junction box cover. The junction box body has a first groove on its top, and the junction box cover has first clips on both sides. The first groove and the first clips are configured to cooperate to allow the junction box cover to flip and connect relative to the junction box body, and to keep the junction box cover flat with the junction box body when the junction box body is placed flat or vertically. The junction box body has a second groove on one side and a second clip on the other side. The second groove and second clip on two adjacent junction box bodies are configured to cooperate to achieve a modular connection between the junction box bodies.
[0009] The junction box body is equipped with self-tapping posts.
[0010] The inner wall of the junction box is provided with self-tapping posts on both the left and right sides. The self-tapping posts are provided as remedial fixing points for fixing the switch panel when the buckle fails or is damaged.
[0011] The self-tapping post has a buckle at the top, which is connected to the junction box body. The buckle has a buckle cover and a nut inside for fixing the switch panel.
[0012] The bottom of the junction box body is provided with a first reserved knockout hole.
[0013] The front and rear side walls of the junction box body are provided with second reserved knockout holes, and the left and right side walls of the junction box body are provided with third reserved knockout holes.
[0014] The number of the second reserved knockout holes is set to three, and the number of the third reserved knockout holes is set to two. The third reserved knockout holes are set for use by threading wires inside the combined junction box after the junction box bodies are assembled together.
[0015] The front and rear side walls of the junction box body are provided with a reserved knock-out area, and a second reserved knock-out hole and a reserved knock-out area are provided for knocking out when needed to install a cup comb or directly insert a conduit.
[0016] The bottom of the junction box body is provided with a flange to ensure that there are no gaps between the assembled junction box bodies, thereby preventing cement from entering the junction box body during subsequent masonry work.
[0017] The four side walls of the junction box body are provided with reinforcing ribs to increase the overall structural strength of the junction box body and enhance the firmness of the junction box body to the wall cement in the later stage.
[0018] The beneficial effects of this utility model are as follows: This application uses a first clip and a first groove to combine and connect the junction box body and the junction box cover, so that the junction box cover can be flexibly rotated relative to the junction box body, and can ensure that whether the junction box body is placed horizontally in the wall groove (such as a normal socket) or vertically (such as in a special position or combination), the junction box cover can provide a uniform and tight flat coverage, effectively sealing the opening. Compared with traditional temporary sealing, the junction box cover structure provided in this application, through a rigid and stable mechanical interlocking structure, is not easy to loosen or shift due to slight collisions or vibrations during construction, ensuring the continuous effectiveness of the junction box cover function. It provides a reliable and durable active protective barrier, greatly reducing the risk of contamination and blockage inside the junction box, and preventing cement mortar, dust and other impurities from entering the junction box body during the later masonry (plastering, tiling) construction stage, thus ensuring the cleanliness and smoothness of the subsequent electrical installation. The combination of the first clip and the first groove makes the installation and removal of the junction box cover extremely convenient and can be completed without tools; the junction box cover can be easily removed before temporary wiring, inspection or formal installation of the switch panel is required; the seal can be quickly restored during construction breaks or after completion. This flexible and reversible operation greatly facilitates the construction process. The junction box body and the buckle in this application are connected by a buckle. Two adjacent junction box bodies are connected by a second groove and a second clip, which simplifies the installation process and facilitates the side-by-side combination and expansion of multiple junction box bodies. In addition, multiple reserved knock-out holes are provided on the bottom, front and rear sides of the junction box body to meet the needs of multi-directional wiring. The junction box structure disclosed in this application has a reasonable design, which significantly improves the convenience of junction box installation, the flexibility of wiring, the protection during construction, and the reliability of long-term use. It is particularly suitable for electrical points that require combined installation. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the junction box body in a conveniently installable combinable junction box according to this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the junction box body in a conveniently installable combinable junction box according to this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the junction box body in a conveniently installable combinable junction box according to this utility model. Figure 3 ; Figure 4 This is a partial structural diagram of the main body of a modular junction box that is easy to install according to this utility model. Figure 5 This is a schematic diagram of the structure of a modular junction box that is easy to install according to this utility model. Figure 1 ; Figure 6This is a schematic diagram of the structure of a modular junction box that is easy to install according to this utility model. Figure 2 ; The components are labeled as follows: 1. Junction box body; 2. Junction box cover; 3. Self-tapping post; 4. Buckle; 5. Buckle flip cover; 6. Nut; 7. First reserved knockout hole; 8. Second reserved knockout hole; 9. Third reserved knockout hole; 10. Reserved knockout area; 11. First groove; 12. Second groove; 13. Second clip; 14. Flanged edge; 15. Reinforcing rib; 21. First clip. Detailed Implementation
[0020] The present invention will be further described below with reference to specific embodiments.
[0021] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.
[0022] like Figures 1-6 As shown, a modular junction box that is easy to install includes a junction box body 1 and a junction box cover 2. The junction box body 1 has a first groove 11 on its top, and the junction box cover 2 has first clips 21 on both sides. The first groove 11 and the first clips 21 are configured to cooperate to enable the junction box cover 2 to be flipped and connected relative to the junction box body 1, and to keep the junction box cover 2 and the junction box body 1 flat when the junction box body 1 is laid flat or vertical. The junction box body 1 has a second groove 12 on one side and a second clip 13 on the other side. The second groove 12 and the second clip 13 on the sides of two adjacent junction box bodies 1 are configured to cooperate to enable the modular connection between the junction box bodies 1.
[0023] The junction box body 1 is equipped with self-tapping posts 3, and self-tapping posts 3 are also provided on both the left and right sides of the inner wall of the junction box body 1. The self-tapping posts 3 are provided as remedial fixing points for fixing the switch panel in case the clip 4 fails or is damaged. The top of the self-tapping post 3 is equipped with a clip 4, which is snapped into the junction box body 1, realizing quick fixing and pre-positioning of the switch panel mounting bracket; the clip 4 is equipped with a (removable) clip cover 5, which is not part of the clip 4. When the clip 4 is assembled onto the junction box body 1, this clip cover 5 fits snugly and covers the front of the clip 4 entrance, forming a perfect sealing barrier. The effects of the snap-on cover 5 are as follows: During the wall finishing stage after the junction box installation (such as plastering or puttying), the snap-on cover 5 effectively prevents impurities such as cement and paint from entering the junction box body 1 and the snap-on structure, ensuring internal cleanliness. During the installation stage, when the switch panel needs to be installed, the construction worker can easily pry off and discard the snap-on cover 5 attached to the junction box body 1, exposing the snap-on 4 and its internal nut 6, clearing obstacles for panel installation. Furthermore, a nut 6 is pre-embedded inside the snap-on 4. After removing the snap-on cover 5, this nut 6 serves as a standardized threaded connector, used to securely and precisely fix the switch panel to the junction box.
[0024] The bottom of the junction box body 1 is provided with a first pre-reserved knockout hole 7; the front and rear side walls of the junction box body 1 are provided with second pre-reserved knockout holes 8, and the left and right side walls of the junction box body 1 are provided with third pre-reserved knockout holes 9. The number of second pre-reserved knockout holes 8 is set to three, and the number of third pre-reserved knockout holes 9 is set to two. The third pre-reserved knockout holes 9 are provided for threading wires inside the combined junction box after the junction box bodies 1 are assembled. The front and rear side walls of the junction box body 1 are provided with pre-reserved knockout areas 10. The second pre-reserved knockout holes 8 and the pre-reserved knockout areas 10 are provided for knocking out when needed to install a comb or directly thread conduit. The shape of the third pre-reserved knockout hole 9 is not limited to circular and can be used specifically for threading wires inside the combined junction boxes.
[0025] The junction box body 1 has a flange 14 at its bottom to ensure seamless connections between assembled junction box bodies 1, preventing cement from entering the junction box body 1 during subsequent masonry work. Furthermore, the bottom end of the flange 14 is higher than the bottom surface of the junction box body 1. This structural design avoids unevenness at the groove edges of the junction box body 1, ensuring stable placement and improving ease of construction. Reinforcing ribs 15 are provided on the four side walls of the junction box body 1 to increase its overall structural strength and enhance the adhesion between the junction box body 1 and the cement wall surface.
[0026] The junction box structure disclosed in this application features multi-angle adaptive sealing. Specifically, the first groove 11 and the first clip 21 are combined and connected to achieve a flip-connection between the junction box cover 2 and the junction box body 1. This ensures that the junction box cover 2 remains flat with the junction box body 1 whether it is placed horizontally (like a regular socket) or vertically (like in a special location or combination) within a wall groove, effectively sealing the opening. Active construction-period protection: The core function of this tight cover is to prevent cement mortar, dust, and other impurities from entering the junction box body 1 during later masonry (plastering, tiling) construction. Traditional temporary seals (such as paper or tape) are prone to falling off, have poor sealing, and are not resistant to construction disturbances. The junction box cover 2 structure disclosed in this application, through a rigid and stable mechanical combination, provides a reliable and durable active protective barrier, greatly reducing the risk of contamination and blockage inside the junction box body 1, and ensuring the cleanliness and smoothness of subsequent electrical installations.
[0027] In addition, the junction box structure disclosed in this application also features ease of operation and reversibility: the combination of the first clip 21 and the first groove 11 makes the installation and removal of the junction box cover 2 extremely convenient and can be completed without tools; the junction box cover 2 can be easily removed before temporary wiring, inspection, or formal installation of the switch panel is required; the seal can be quickly restored during construction breaks or after completion, and this flexible and reversible operation greatly facilitates the construction process; structural stability and durability: the mechanical interlocking structure of the first clip 21 and the first groove 11 provides a firm connection, which is not easy to loosen or shift due to slight collisions or vibrations during construction, ensuring the continuous effectiveness of the junction box cover 2; and the junction box cover 2 itself is usually made of the same or compatible engineering plastic material as the junction box body 1, which has good corrosion resistance and mechanical strength and can withstand the influence of the construction environment.
[0028] In summary, this application offers convenient installation: the junction box body 1 and the clip 4 are connected by clips, and the junction box bodies 1 are combined via the second clip 13 and the second groove 12, simplifying the installation process; flexible wiring: pre-drilled holes are provided on the bottom, front, back, left, and right sides of the junction box body 1 to meet multi-directional wiring needs, and non-circular pre-drilled holes are specially provided on the left and right sides for internal wiring between combined junction boxes; reliable panel fixing: the clip 4 has a built-in nut 6 providing the main fixing point, and the self-tapping post 3 inside the junction box body 1 serves as a redundancy backup, ensuring reliable panel fixing. Ensures reliable panel fixation; multiple construction anti-fouling measures: the combination junction box cover 2 (flat / vertical placement), snap-on flip cover 4, and combination flange 14 form a triple protection structure, effectively preventing cement from penetrating the junction box body 1 during the masonry stage; strong construction adaptability: the flange 14 is designed to be higher than the bottom surface, which can adapt to the unevenness of the grooved corners and ensures that the junction box is placed stably; stable structure: the reinforcing rib 15 design significantly improves the overall strength of the junction box and the final fit with the wall; good combinability: the modular design facilitates the side-by-side combination and expansion of multiple junction boxes.
[0029] This application provides a modular junction box that is easy to install, flexible in wiring, has multiple anti-pollution protections, reliable panel fixing, and is easy to assemble. The structural design is reasonable and significantly improves the ease of installation, flexibility in wiring, protection during construction, and reliability in long-term use. It is particularly suitable for electrical points that require modular installation.
[0030] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.
[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of this application. In other related technical fields, the scope of this application is defined by the appended claims and their equivalents, and they are similarly included within the protection scope of this application.
Claims
1. A modular junction box that is easy to install, characterized in that: The device includes a junction box body and a junction box cover. The junction box body has a first groove on its top and first clips on both sides of the junction box cover. The first groove and the first clips are configured to allow the junction box cover to be flipped and connected relative to the junction box body, and to keep the junction box cover and the junction box body flat when the junction box body is laid flat or vertical. The junction box body has a second groove on one side and a second clip on the other side. The second grooves and second clips on the sides of two adjacent junction box bodies are matched to realize the combination connection between the junction box bodies.
2. The modular junction box with convenient installation as described in claim 1, characterized in that: The junction box body is equipped with self-tapping posts.
3. The modular junction box with convenient installation as described in claim 2, characterized in that: The inner wall of the junction box is provided with self-tapping posts on both the left and right sides.
4. A modular junction box with easy installation as described in claim 2 or 3, characterized in that: The self-tapping post has a buckle at the top, which is connected to the junction box body. The buckle has a buckle cover and a nut inside.
5. The easily installable combinable junction box as described in claim 1, characterized in that: The bottom of the junction box body is provided with a first reserved knockout hole.
6. The easily installable combinable junction box as described in claim 1, characterized in that: The front and rear side walls of the junction box body are provided with second reserved knockout holes, and the left and right side walls of the junction box body are provided with third reserved knockout holes.
7. A modular junction box with easy installation as described in claim 6, characterized in that: The number of the second reserved knockout holes is set to three, and the number of the third reserved knockout holes is set to two.
8. A modular junction box with easy installation as described in claim 6, characterized in that: The front and rear side walls of the junction box body are provided with reserved knock-out areas.
9. A modular junction box with easy installation as described in claim 1, characterized in that: The bottom of the junction box body is provided with a flange.
10. A modular junction box with easy installation as described in claim 1, characterized in that: The four side walls of the junction box body are provided with reinforcing ribs.