Concealed electric box structure for building block type residential building
By using aluminum alloy profile beams in the electrical box structure of the block-type residential building, the stability problem of the electrical box when the wall deforms is solved, standardized conduit paths are provided, and structural stability and construction convenience are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR SEVENTH ENG DIVISION CORP LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-01
AI Technical Summary
The concealed electrical boxes in existing block-type residential buildings are easily squeezed and deformed when the wall deforms, the door panels get stuck, and they rust and fall off. In addition, the traditional concrete lintels are inconvenient to install and affect the integrity of the wall and the stability of the structure.
Aluminum alloy profile beams are used instead of concrete lintels. The mechanical interlocking formed by slotted joints disperses the load and enhances structural stability. Pre-drilled openings on the profile beams provide standardized conduit paths to avoid damaging the walls.
This improved the electrical box's resistance to deformation, ensured the integrity of the wall and ease of construction, avoided the inconvenience of transporting and installing concrete lintels, and ensured the stability and durability of the electrical box structure.
Smart Images

Figure CN224191497U_ABST
Abstract
Description
A concealed electrical box structure for block-type residential buildings Technical Field
[0001] This utility model belongs to the technical field of building electrical box equipment, specifically a concealed electrical box structure for block-type residential buildings. Background Technology
[0002] Most existing residential buildings are frame structures with walls constructed of aerated concrete blocks. For aesthetic reasons and to save space, electrical distribution boxes are often concealed, directly embedded in the wall. However, the incoming and outgoing lines are located at the top and bottom of the box, requiring grooves to be cut into the walls above and below the box, disrupting the structural integrity of the wall. Furthermore, the existing box casings are made of thin galvanized iron. When the wall itself deforms slightly due to its own weight, temperature changes, or external forces, traditional electrical boxes are easily compressed, leading to problems such as box deformation, jammed doors, and, in southern regions, rusting and detachment of internal electrical fixtures due to prolonged exposure to humid air. In addition, the existing installation structure of electrical boxes has poor resistance to deformation, and long-term use may lead to safety hazards due to stress concentration.
[0003] The current practice is to place a precast concrete lintel on top of the electrical box, but this practice has the following problems:
[0004] 1. Since the top of the electrical box needs to be equipped with inlet and outlet conduits, holes need to be drilled or reserved in the precast concrete lintel, which affects the strength of the precast concrete lintel. In addition, the precast concrete lintel needs to be made or purchased on site, and it is heavy and easily broken during transportation, handling and installation.
[0005] 2. In order to better disperse the stress of the wall and cause deformation of the electrical box, the length of the precast concrete lintel needs to be greater than the length of the electrical box. However, the precast concrete lintel has a certain thickness, which will affect the arrangement of the masonry bricks, resulting in poor integrity of the wall and unstable structure.
[0006] Currently, the market urgently needs a type of anti-deformation concealed electrical box that can adapt to wall deformation, maintain a good overall wall structure after installation, and is easy to construct. Summary of the Invention
[0007] To address the shortcomings of the aforementioned background technology, this utility model proposes a concealed electrical box structure for block-type residential buildings. This solves the problems of needing to place a precast concrete lintel on top of the electrical box, which requires drilling holes in the precast concrete lintel, reducing its strength and making it prone to breakage during installation, or the precast concrete lintel having a certain thickness and being too long, affecting the arrangement of bricks in the masonry, resulting in poor wall integrity and structural instability.
[0008] The technical solution of this application is as follows:
[0009] A concealed electrical box structure for a block-type residential building includes an electrical box assembly disposed between the blocks. The top of the electrical box assembly is detachably connected to a profile beam plate. The length of the profile beam plate is greater than the length of the electrical box assembly to better distribute stress and avoid local deformation of the box. A slot is opened on the bottom surface of the block disposed above the profile beam plate. The profile reinforcing ribs of the profile beam plate are inserted into the slot. An opening for passing a conduit is provided between the electrical box assembly and the profile beam plate. The profile beams and blocks are interlocked through slots to form a mechanical interlock, distributing the load in the electrical box area, preventing localized pressure cracking of the masonry, improving the overall structure's seismic resistance and durability, and enhancing structural stability. The profile beams are made of aluminum alloy profiles, which can effectively prevent corrosion in humid climates. Pre-drilled openings in the profile beams reinforce the top rigidity of the electrical box components, replacing traditional concrete lintels. The profile beams provide symmetrical and uniform reinforcement of the box top rigidity, making construction convenient, not affecting the wall bricklaying, and ensuring strong integrity. They also solve the problems of inconvenient handling and easy breakage of concrete lintels. The use of aluminum alloy profile beams and blocks makes construction convenient, less prone to breakage, easy to transport, and does not affect the bricklaying layout.
[0010] Furthermore, the electrical box assembly includes a cubic reinforcing frame, the outside of which is covered by a box shell, and the top and bottom surfaces of the box shell are provided with the openings corresponding to each other.
[0011] Furthermore, the profile beam includes a base plate with the same width as the top surface, the base plate is provided with the profile reinforcing ribs and the opening, the opening of the base plate corresponds vertically to the opening of the top surface and is positioned by a connector.
[0012] Furthermore, the connector includes a conduit sleeve, the outer wall of which fits against the inner wall of the opening, the height of which is greater than the sum of the thicknesses of the bottom plate and the top surface, and the conduit sleeve is provided with a ring portion for engaging with the bottom plate.
[0013] Furthermore, the interior of the enclosure is provided with electrical appliance fixing strips, the two ends of which are connected to the reinforcing frame. These strips can be used to fix electrical appliances placed inside the enclosure as needed, and they also provide further support to the reinforcing frame.
[0014] Furthermore, the bottom plate has profile reinforcing ribs on the left and right sides of the opening, and the two profile reinforcing ribs are inserted into the grooves and then fixed together by mortar bonding and solidification.
[0015] Furthermore, the length of the bottom plate is greater than the length of the top surface to better distribute stress and avoid local deformation of the box.
[0016] Furthermore, the reinforcing frame is provided with bolt holes for connecting the face cover, which facilitates the later installation and removal of the face cover.
[0017] Furthermore, the base plate has several openings to provide standardized wiring paths for the conduits, avoiding later chiseling and damage to the masonry, ensuring the integrity of the wall, and facilitating later maintenance or line expansion.
[0018] Furthermore, the surface of the reinforcing rib of the profile is roughened to facilitate a more secure connection with the block later.
[0019] The specific beneficial effects of this utility model include:
[0020] 1. The profile beams and slabs are connected to the masonry blocks through slots to form a mechanical interlock, which distributes the load in the electrical box area, avoids local pressure cracking of the masonry, improves the seismic resistance and durability of the overall structure, and enhances the structural stability;
[0021] 2. The openings reserved between the electrical box assembly and the profile beam provide a standardized wiring path for the conduit, avoiding the need for later chiseling and damage to the masonry, ensuring the integrity of the wall, and facilitating later maintenance or line expansion.
[0022] 3. The profile beams and slabs are made of aluminum alloy profiles, which can effectively avoid corrosion in humid climates. Openings are pre-drilled in the profile beams and slabs to reinforce the top rigidity of the electrical box components, replacing the traditional concrete lintels. The profile beams and slabs provide symmetrical and uniform reinforcement of the top rigidity of the box, making construction convenient, not affecting the bricklaying of the wall, and ensuring strong integrity. They also solve the problems of inconvenient handling and installation of concrete lintels and their susceptibility to breakage. The use of aluminum alloy profile beams and slabs makes construction convenient, less prone to breakage, easy to transport, and does not affect the bricklaying layout. Attached Figure Description
[0023] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 is a schematic diagram of the installation of this utility model;
[0025] Figure 2 is a schematic diagram of the fit between the profile beam and the groove in this utility model;
[0026] Figure 3 is a schematic diagram of the fit between the electrical box assembly and the profile beam plate in this utility model;
[0027] Figure 4 is a cross-sectional view of Figure 3;
[0028] Figure 5 is a schematic diagram of the reinforcing frame, profile beams and plates, and connectors in this utility model;
[0029] Figure 6 is a schematic diagram of the reinforced frame, profile beams and plates, and connectors of this utility model.
[0030] Figure 7 is a front view of this utility model.
[0031] Explanation of icon numbers:
[0032] 1. Building blocks; 2. Electrical box assembly;
[0033] 3. Profile beams and slabs; 4. Grooves;
[0034] 5. Conduit; 6. Opening;
[0035] 7. Connectors; 8. Electrical fixing strips;
[0036] 21. Strengthen the framework;
[0037] 22. Top surface; 23. Bottom surface;
[0038] 31. Profile reinforcing ribs; 32. Base plate;
[0039] 33. Bolt holes. Detailed Implementation
[0040] 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.
[0041] A concealed electrical box for a block-type residential building, as shown in Figures 1 and 2, includes an electrical box assembly 2 disposed between blocks 1. A profile beam 3 is detachably connected to the top of the electrical box assembly 2. The length of the profile beam 3 is greater than the length of the electrical box assembly 2 to better distribute stress and prevent local deformation of the box. A slot 4 is formed on the bottom surface of the block 1 above the profile beam 3. A profile reinforcing rib 31 of the profile beam 3 is inserted into the slot 4. An opening 6 for passing a conduit 5 is provided between the electrical box assembly 2 and the profile beam 3. The profile beam 3 is made of aluminum alloy, which effectively avoids corrosion in humid climates. The pre-drilled opening 6 in the profile beam 3 reinforces the top rigidity of the electrical box assembly 2, replacing the traditional concrete lintel. This utility model is mainly used for masonry walls. It solves the problem that the existing method requires a concrete lintel to be placed on the top of the box. The aluminum alloy profile beam plate 3 of this solution provides rigid, symmetrical and uniform reinforcement to the top of the box. It is easy to construct, does not affect the brick layout of the wall, has strong integrity, and solves the pain points of inconvenient handling and installation of concrete lintels and easy breakage. The aluminum alloy profile beam plate 3 is easy to construct, not easy to break, easy to transport, and does not affect the brick layout of the wall.
[0042] Based on the above embodiments, as a preferred embodiment, as shown in Figure 3, the electrical box assembly 2 includes a cubic reinforcing frame 21. The reinforcing frame 21 is encased in a box shell. The top surface 22 and bottom surface 23 of the box shell both have openings 6, which correspond vertically to facilitate the later installation of conduits 5. The box body adopts an embedded frame structure, and the box shell is made of aluminum alloy plate with internal aluminum alloy frame reinforcing ribs to improve overall rigidity. In this utility model, the electrical box assembly 2's anti-deformation principle mainly relies on the aluminum alloy profile beam plate 3 to disperse the wall force. The reinforcing frame 21 inside the electrical box assembly 2 is located around the box body and serves as a permanent skeleton. The compressive rigidity of the profile beam plate 3 does not affect the internal space or the electrical appliance installation position. By optimizing the box structure and installation method, the anti-deformation capability is improved, ensuring the functional stability of the electrical box under slight wall deformation.
[0043] This utility model is mainly used to prevent and resist the deformation of the box body caused by the wall's own weight and stress acting along the brick joints in secondary structure masonry brick walls.
[0044] Based on the above embodiments, as a preferred embodiment, the profile beam 3 includes a base plate 32 with the same width as the top surface 22. The bottom surface of the base plate 32 is attached to the top surface of the top surface 22 to facilitate the neat arrangement of subsequent masonry bricks. The base plate 32 is provided with the profile reinforcing ribs 31 and the openings 6. The profile reinforcing ribs 31 are perpendicularly connected to the base plate 32. Several openings 6 are spaced apart along the length of the base plate 32, and the size and diameter of the openings 6 can be different. The openings 6 of the base plate 32 correspond vertically to the openings 6 of the top surface 22 and are positioned by connectors 7. The base plate 32 and the top surface 22 are detachably connected by connectors 7 or the base plate 32 and the top surface 22 can be directly welded and fixed.
[0045] Preferably, the connector 7 includes a conduit sleeve, the outer wall of which fits against the inner wall of the opening 6. The height of the conduit sleeve is greater than the sum of the thicknesses of the base plate 32 and the top surface 22, making the connection between the base plate 32 and the top surface 22 more stable. The conduit sleeve is provided with a ring for engaging with the base plate 32. At the same time, the conduit sleeve can be made of an elastic material such as rubber, which can effectively prevent wear on the conduit 5 or the wire.
[0046] Specifically, holes for the conduit 5 to pass through need to be made at the corresponding positions of the block 1. The diameter of the holes is larger than the diameter of the conduit sleeve so that the block 1 fits with the profile reinforcing rib 31 and the conduit sleeve.
[0047] Based on the above embodiments, as a preferred embodiment, as shown in Figure 4, an electrical fixing strip 8 is provided inside the box shell. The two ends of the electrical fixing strip 8 are connected to the reinforcing frame 21, which can fix the electrical appliances placed inside the box as needed. At the same time, the electrical fixing strip 8 can also provide further support for the reinforcing frame 21 and enhance the stability of the electrical box.
[0048] Based on the above implementation method, as a preferred implementation method, profile reinforcing ribs 31 are respectively provided on the left and right sides of the opening 6 of the base plate 32. The two profile reinforcing ribs 31 are respectively inserted into the groove 4 and then fixed together by mortar bonding and solidification.
[0049] Preferably, as shown in Figure 6, the length of the bottom plate 32 is greater than the length of the top surface 22, so as to better distribute stress and avoid local deformation of the box.
[0050] Based on the above embodiments, as a preferred embodiment, as shown in Figure 7, the reinforcing frame 21 is provided with bolt holes 33 for connecting the face cover, which facilitates the later installation and disassembly of the face cover.
[0051] Based on the above implementation method, as a preferred implementation method, the base plate 32 has several openings 6, which can be divided into multiple routes as needed to provide a standardized wiring path for the conduit, avoid the later chiseling and damage to the masonry, ensure the integrity of the wall, and facilitate later maintenance or line expansion.
[0052] Preferably, as shown in Figure 3, the diameter of the four openings 6 is smaller and the diameter of the two openings 6 is larger, so as to be suitable for conduits 5 of different sizes and have a wide range of applications.
[0053] Based on the above embodiments, as a preferred embodiment, the surface of the profile reinforcing rib 31 is provided with a roughened surface, which facilitates a more secure connection with the block in the later stage.
[0054] The construction method of this utility model is as follows:
[0055] During wall construction, the position of the electrical box is first determined on the ground. A chalk line is drawn to mark the installation elevation of the box. The electrical box is then embedded when the wall reaches this elevation. When the wall reaches the top of the box, the profile beam slab 3 is placed first. The conduit sleeve is then passed through the openings 6 on 32 and 22 to achieve positioning and fit, forming a whole. The masonry bricks above the profile beam slab 3 are grooved according to the position of the reinforcing ribs 31 and inserted into the profile beam slab 3. Finally, they are fixed together with mortar after curing, forming a whole.
[0056] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.
[0057] The above content shows and describes the basic principles, main features, and beneficial effects of this utility model. The above description is merely a preferred embodiment of this utility model and is not intended to limit it. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A concealed electrical box structure for a block-type apartment building, characterized by: The electrical box assembly (2) is disposed between the blocks (1). The top of the electrical box assembly (2) is detachably connected to a profile beam plate (3). The length of the profile beam plate (3) is greater than the length of the electrical box assembly (2). A slot (4) is opened on the bottom surface of the block (1) above the profile beam plate (3). The profile reinforcing rib (31) of the profile beam plate (3) is inserted into the slot (4). An opening (6) for passing a conduit (5) is connected between the electrical box assembly (2) and the profile beam plate (3).
2. The recessed electrical box structure for a block-type apartment building according to claim 1, characterized by: The electrical box assembly (2) includes a cubic reinforcing frame (21), the outside of which is covered by a box shell. The top surface (22) and bottom surface (23) of the box shell are provided with the opening (6), and the opening (6) corresponds to each other vertically.
3. The recessed electrical box structure for a block-type apartment building according to claim 2, characterized by: The profile beam (3) includes a base plate (32) with the same width as the top surface (22). The base plate (32) is provided with the profile reinforcing rib (31) and the opening (6). The opening (6) of the base plate (32) corresponds vertically to the opening (6) of the top surface (22) and is positioned by a connector (7).
4. The recessed electrical box structure for a block-type apartment building according to claim 3, characterized by: The connector (7) includes a conduit sleeve, the outer wall of which is fitted to the inner wall of the opening (6), the height of which is greater than the sum of the thicknesses of the bottom plate (32) and the top surface (22), and the conduit sleeve is provided with a ring for blocking and engaging with the bottom plate (32).
5. The concealed electrical box structure for block-type residential buildings according to claim 4, characterized in that: The inside of the housing is provided with an electrical fixing strip (8), and the two ends of the electrical fixing strip (8) are connected to the reinforcing frame (21).
6. The recessed electrical box structure for a block-type apartment building according to claim 3, characterized by: The bottom plate (32) has profile reinforcing ribs (31) on both the left and right sides of the opening (6).
7. The recessed electrical box structure for a block-type apartment building according to claim 6, characterized by: The length of the bottom plate (32) is greater than the length of the top surface (22).
8. The recessed electrical box structure for a block-type apartment building according to claim 2, characterized by: The reinforcing frame (21) is provided with bolt holes (33) for connecting the faceplate.
9. The recessed electrical box structure for a block-type apartment building according to claim 3, characterized by: The base plate (32) has several openings (6).
10. The concealed electrical box structure for block-type residential buildings according to claim 3, characterized in that: The surface of the profile reinforcing rib (31) is provided with a roughened surface.