Masonry structure free of slotting at position of electric box
Through the prefabricated lintel structure and back plate design, the wall looseness and cracks during the installation of the electric box are solved, and pollution-free and low-cost electric box installation is achieved, which is in line with the green construction concept.
Patent Information
- Application Number
- CN202422525400.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-10-18
AI Technical Summary
During the installation of the electric box, the traditional construction model has quality problems such as loose walls and cracks. The groove and hole digging process produces pollution and increases costs, and the perforation of the electric box line pipe is complicated.
The prefabricated lintel structure is adopted, with electric box placement grooves and wiring grooves in the wall. The back plate is provided on the back side of the prefabricated lintel. The gap is filled with mortar to avoid groove opening and hole making processes, and the back plate is used to prevent the wall from cracking.
It achieves no need for on-site grooves and holes, reduces pollution and costs, ensures smooth installation of the electric box, prevents wall cracks, and meets green construction requirements.
Smart Images

Figure CN223202588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a masonry structure free of slotting at the location of an electric box. Background Art
[0002] In recent years, China has placed high importance on the concept of green construction and has stepped up its promotion efforts, imposing stricter requirements on construction techniques and methods. Achieving green, efficient, and high-quality construction, while ensuring that design and functional requirements are met, has become a key issue. The current construction process for installing distribution boxes in masonry walls still utilizes the traditional "laying first, then slotting" method. While this method offers certain conveniences during the masonry phase, it presents numerous inconveniences and potential quality issues during plumbing and electrical installations and subsequent finishing work such as plastering. Careless operation can lead to quality issues such as localized loosening of the wall and cracks after filling, contradicting the concept of green construction. Furthermore, processes such as slotting and drilling are prone to generating pollutants such as dust and construction debris, which in turn increases economic costs, including increased labor, time, and material costs. In view of the fact that the length of general electrical boxes is more than 300mm, it is also necessary to consider various loads transmitted from the masonry above the supporting opening during masonry construction. Generally, lintels are used for support, and wiring holes are opened on the lintels for the power supply box wire pipes to pass through. However, when passing the pipes, it is necessary to pass through the wiring holes on the lintels, which is more cumbersome. In addition, when thin blocks are used on the back side of the electrical box placement slot, there is a risk of cracking because they are too thin. Utility Model Content
[0003] The utility model aims to solve the above problems, thereby providing a masonry structure without slotting at the location of an electrical box which is easy to construct.
[0004] The utility model solves the above problems by adopting the following technical solutions:
[0005] A groove-free masonry structure for an electrical box location includes a prefabricated lintel and a wall built of blocks. The wall is provided with an electrical box placement slot. The prefabricated lintel is built in the wall and straddles the electrical box placement slot. The middle of the front face of the prefabricated lintel is recessed inward to form a wiring slot for use with a wire tube. The middle of the back side of the prefabricated lintel is integrally formed with a back plate that is inserted downwardly onto the back side of the electrical box placement slot.
[0006] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:
[0007] The wiring trough of the prefabricated lintel allows for smoother pipe laying. After the electrical box is installed, the gap between the electrical box and the blocks and the wiring trough can be filled with mortar and a hanging mesh. The backboard cast integrally with the prefabricated lintel prevents the wall behind the electrical box from cracking due to thin blocks, thus avoiding on-site grooving, drilling and other processes.
[0008] As a preferred embodiment, a further technical solution of the present invention is:
[0009] Furthermore, the width of the prefabricated lintel is equal to the width of the wall.
[0010] Furthermore, the top-view cross-section of the wiring trough is trapezoidal.
[0011] Furthermore, the length of the prefabricated lintel is greater than the length of the electrical box placement slot, and the length of the prefabricated lintel extending from one side to the outside of the electrical box placement slot is ≥250 mm.
[0012] Furthermore, L-shaped blocks are symmetrically arranged on both sides of the prefabricated lintel and located in the wall. The spacing between the L-shaped blocks is equal to the length of the electrical box placement slot, and the upper part of the prefabricated lintel is stuck between the L-shaped blocks. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the explosion structure of an embodiment of the utility model;
[0014] Figure 2 This is a schematic diagram of the main structure of an embodiment of the utility model;
[0015] Figure 3 This is a schematic structural diagram of a prefabricated lintel according to an embodiment of the utility model;
[0016] Components marked in the figure are: prefabricated lintel 1, wiring trough 11, backboard 12, wall 2, electrical box 21, and L-shaped building block 3. DETAILED DESCRIPTION
[0017] The present invention will be further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.
[0018] A groove-free masonry structure for an electrical box position includes a precast lintel 1 and a wall 2 built of blocks. The wall 2 is provided with an electrical box placement slot for placing an electrical box 21. The precast lintel 1 is built in the wall 2 and straddles the electrical box placement slot. The middle of the front face of the precast lintel 1 is recessed inward to form a wiring slot 11 for use with a wire pipe. A back plate 12 is integrally formed in the middle of the back side of the precast lintel 1 and is inserted downwardly onto the back side of the electrical box placement slot. The back plate 12 blocks the portion of the electrical box placement slot on the back side of the wall 2. Concrete is used as the back plate 12 to prevent thin blocks from cracking. After the concrete-cast precast lintel 1 reaches a certain strength, it is built simultaneously with the wall.
[0019] Furthermore, the width of the prefabricated lintel 1 is equal to the width of the wall 2 .
[0020] Furthermore, the cross-section of the wiring trough 11 when viewed from above is trapezoidal, with the bottom edge of the trapezoid located on the outside, which makes it easier to lay the wire conduit.
[0021] Furthermore, the length of the prefabricated lintel 1 is greater than the length of the electrical box placement slot, and the length of the prefabricated lintel 1 extending from one side to the outside of the electrical box placement slot is ≥250 mm.
[0022] Furthermore, L-shaped blocks 3 are symmetrically arranged on both sides of the prefabricated lintel 1 and located inside the wall 2. The spacing between the L-shaped blocks 3 is equal to the length of the electrical box placement slot, and the upper part of the prefabricated lintel 1 is stuck between the L-shaped blocks 3.
[0023] The wiring trough of the prefabricated lintel allows for smoother pipe laying. After the electrical box 21 is installed, the gap between the electrical box 21 and the blocks and the wiring trough can be filled with mortar and a hanging mesh. The back panel 12 integrally cast with the prefabricated lintel 1 prevents the wall 2 on the back of the electrical box from cracking due to thin blocks, thus avoiding on-site grooving, drilling and other processes.
[0024] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of the present invention.
Claims
1. A masonry structure without slotting for an electrical box, including a prefabricated lintel, characterized in that: It also includes a wall built of blocks, which is provided with an electrical box placement slot. A prefabricated lintel is built in the wall and spans above the electrical box placement slot. The middle part of the front of the prefabricated lintel is concave inward to form a wiring slot used in conjunction with the wire pipe. The middle part of the back side of the prefabricated lintel is integrally formed with a back plate that is inserted downward on the back side of the electrical box placement slot.
2. The slot-free masonry structure for the electrical box according to claim 1, characterized in that: The width of the precast lintel is equal to the width of the wall.
3. The slot-free masonry structure for the electrical box according to claim 1 is characterized in that: The cross-section of the wire duct when viewed from above is trapezoidal.
4. The slot-free masonry structure for the electrical box according to claim 1, characterized in that: The length of the prefabricated lintel is greater than the length of the electrical box placement slot, and the length of the prefabricated lintel extending to the outside of the electrical box placement slot on one side is ≥250mm.
5. The slot-free masonry structure for the electrical box according to claim 1 is characterized in that: L-shaped blocks are symmetrically arranged on both sides of the prefabricated lintel and located in the wall. The spacing between the L-shaped blocks is equal to the length of the electrical box placement slot, and the upper part of the prefabricated lintel is stuck between the L-shaped blocks.