expansion joint corner grid
The expansion joint corner mesh, formed by integral stamping of galvanized steel sheet, solves the problem of stress tearing of fixed steel plates in traditional building expansion joints, achieving stability and durability in harsh environments and adapting to changes in building structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MEIFEI BUILDING MATERIALS (HEBEI) CO LTD
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-14
Smart Images

Figure CN224495451U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building decoration, and in particular to expansion joint corner mesh. Background Technology
[0002] Building expansion joints are structural joints that are rationally set along the construction joint direction in buildings or structures to cope with cracks or damage to components caused by changes in climate and temperature. They are also often used to refer to the joints between two adjacent buildings.
[0003] In traditional construction, expansion joints between adjacent buildings are typically rigidly fixed using color steel plates, followed by exterior wall insulation and paint finishing. However, newly constructed buildings, especially within the first ten years after completion, experience slight displacement due to factors such as temperature changes and foundation settlement. This displacement can easily cause stress on the fixing steel plates, leading to tearing of the outer insulation layer and paint finish, resulting in cracking and affecting both aesthetics and insulation performance. To address these issues, a corner mesh structure for expansion joints is proposed. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an expansion joint corner mesh, which aims to improve the problem of stress tearing caused by fixing steel plates in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] Expansion joint corner mesh includes a connector, one side of which is connected to the corner mesh, and the other side of which is provided with a U-shaped groove. The multiple U-shaped grooves form a wave shape. The corner mesh, connector, and U-shaped groove are integrally stamped without any welding structure. The U-shaped groove provides expansion and contraction function. The corner mesh is used to cover and protect the walls on both sides of the expansion joint.
[0007] As a further description of the above technical solution:
[0008] The corner mesh, connectors, and U-shaped channels are integrally stamped from galvanized steel sheets.
[0009] As a further description of the above technical solution:
[0010] The depth of the U-shaped groove is 25mm, and the width of the U-shaped groove is 30mm;
[0011] As a further description of the above technical solution:
[0012] The corner mesh has a width of 200mm on one side and a length of 1000mm.
[0013] As a further description of the above technical solution:
[0014] The distance between the plurality of U-shaped grooves is 20mm;
[0015] As a further description of the above technical solution:
[0016] The mesh shape of the angle mesh is rhomboid;
[0017] As a further description of the above technical solution:
[0018] The mesh shape of the corner mesh is square;
[0019] As a further description of the above technical solution:
[0020] The mesh shape of the corner mesh is circular.
[0021] This utility model has the following beneficial effects:
[0022] In this invention, by setting multiple U-shaped grooves that form a wave shape, it can effectively cope with the displacement caused by thermal expansion and contraction and uneven settlement of building structures. At the same time, it has good expansion and contraction and seismic performance, solving the problem of stress tearing caused by traditional corner mesh fixing steel plates. The corner mesh, connectors and U-shaped grooves are stamped and formed as a whole without any welding structure, which effectively improves the service life and stability of the product. Meanwhile, the galvanized steel mesh material also ensures the corrosion resistance and strength of the product, solving the problem of easy damage in harsh environments. Attached Figure Description
[0023] Figure 1 This is a three-dimensional schematic diagram of the expansion joint corner mesh proposed in this utility model;
[0024] Figure 2 This is a structural schematic diagram of the connector for the expansion joint corner mesh proposed in this utility model;
[0025] Figure 3 This is a schematic diagram of the U-shaped groove structure of the expansion joint corner mesh proposed in this utility model.
[0026] Legend:
[0027] 1. Connector; 2. Angle mesh; 3. U-shaped channel. Detailed Implementation
[0028] 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.
[0029] Reference Figure 1-3This utility model provides an embodiment of an expansion joint corner mesh, including a connector. One side of the connector is connected to the corner mesh, and the other side of the connector is provided with a U-shaped groove 3. There are two or more U-shaped grooves, and the multiple U-shaped grooves 3 form a wave shape. The multiple U-shaped grooves 3 realize the expansion function. The U-shaped grooves not only provide expansion and contraction but also effectively adapt to the slight shape changes of the building structure caused by temperature changes or settlement, preventing the generation of cracks in the building's exterior walls. The U-shaped grooves 3 are inserted into the expansion joint, and the corner mesh 2 covers and protects the walls on both sides of the expansion joint. The corner mesh 2, connector 1, and U-shaped groove 3 are preferably integrally stamped from galvanized steel plates without any welding structure, but they can also be made of plastic or other materials. The integral stamping effectively ensures the strength and durability of the device, completely avoids potential quality hazards caused by welding, simplifies the manufacturing process, and ensures that it is not easily deformed or damaged during long-term use.
[0030] The commonly used U-shaped groove 3 has a depth of 25mm and a width of 30mm. The corner mesh 2 has a width of 200mm on one side and a length of 1000mm. The distance between multiple U-shaped grooves 3 is 20mm. All of the above dimensions can be customized according to customer needs.
[0031] The preferred shape of the mesh for the corner mesh 2 is rhombus, with a diagonal size of 20mm and 40mm. Other shapes such as square, circle, rectangle, and polygon are also acceptable. The recommended mesh area is 0.02㎡-0.04㎡, because if the mesh is too small, it will not be easy to fix the rough concrete of the building's exterior wall, and if the mesh is too large, it will be easy for cracks to appear at the mesh wires.
[0032] Working principle: During use, the U-shaped channel 3 is inserted into the building's expansion joint, and the corner mesh 2 on both sides covers the building's exterior wall. The corner mesh 2 is then fixed to the exterior wall using steel nails or plaster. The corner mesh 2 is then covered by the building's exterior wall insulation layer or paint layer. The U-shaped channel 3 can be covered by the insulation layer or left exposed, and decorative items can be added as needed. When the building experiences slight displacement due to temperature, settlement, or other reasons, the U-shaped channel 3 can expand and contract, effectively relieving stress and preventing stress tearing of the fixed steel plate at the expansion joint or cracking of the exterior wall insulation layer. The galvanized steel mesh material ensures that the product maintains its performance in various environments, providing long-lasting protection for the building.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art 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 the present utility model should be included within the protection scope of the present utility model.
Claims
1. An expansion joint corner mesh, including a connector (1), characterized in that: One side of the connector (1) is connected to a corner mesh (2), and the other side of the connector (1) is provided with a U-shaped groove (3). The multiple U-shaped grooves (3) form a wave shape. The corner mesh (2), connector (1) and U-shaped groove (3) are integrally stamped without any welding structure. The U-shaped groove (3) provides a telescopic function. The corner mesh (2) is used to cover and protect the walls on both sides of the expansion joint.
2. The expansion joint corner mesh according to claim 1, characterized in that: The corner mesh (2), connector (1) and U-shaped channel (3) are integrally stamped from galvanized steel sheet.
3. The expansion joint corner mesh according to claim 1, characterized in that: The depth of the U-shaped groove (3) is 25 mm, and the width of the U-shaped groove (3) is 30 mm.
4. The expansion joint corner mesh according to claim 1, characterized in that: The corner mesh (2) has a width of 200mm on one side and a length of 1000mm.
5. The expansion joint corner mesh according to claim 1, characterized in that: The distance between the plurality of U-shaped grooves (3) is 20 mm.
6. The expansion joint corner mesh according to claim 1, characterized in that: The mesh shape of the corner mesh (2) is rhomboid.
7. The expansion joint corner mesh according to claim 1, characterized in that: The angle mesh (2) has a square mesh shape.
8. The expansion joint corner mesh according to claim 1, characterized in that: The mesh shape of the corner mesh (2) is circular.