Concealed expansion joints in building roofs

Abstract

This utility model discloses a concealed expansion joint for building roofs, comprising a decorative surface layer disposed on the surface of the building base. The inner cavity of the decorative surface layer is fixedly connected to two U-shaped bases, with a waterstop installed between the two U-shaped bases. A stainless steel cover plate is bolted to the front sides of both decorative surface layers. Trapezoidal support feet are welded to the left and right sides of the inner cavity of each U-shaped base. A support crossbar is welded to the inner cavity of each U-shaped base, and two diagonal reinforcing strips are welded to the inner cavity of each U-shaped base. Both trapezoidal support feet are located behind the support crossbars. Through the combined action of the trapezoidal support feet, support crossbars, and diagonal reinforcing strips, this utility model provides a reinforced support effect to the inner cavity of the U-shaped base, thereby providing additional reinforcement and reducing deformation of the U-shaped base after prolonged use.

Description

Technical Field

[0001] This utility model belongs to the field of building roof expansion joint technology, and in particular relates to a concealed expansion joint for building roofs. Background Technology

[0002] Expansion joints are an important component of building structures. Buildings expand and contract with temperature changes, and without expansion joints, the stress generated by these changes may cause the structure to crack or be damaged.

[0003] Concealed expansion joints are typically installed within the decorative surface layer of building roofs. Their main function is to prevent cracking of the decorative surface layer due to thermal expansion and contraction. Expansion joints usually consist of a base, a waterstop, and a cover plate. They can maintain the aesthetics of the wall surface while also providing waterproofing. However, since the base is directly fixed to the decorative surface layer, and the waterstop itself has a certain degree of elasticity, this may cause deformation of the base. To address this, a concealed expansion joint for building roofs has been designed. This expansion joint, based on the traditional U-shaped base, incorporates trapezoidal support feet, support crossbars, and diagonal reinforcing strips to strengthen the U-shaped base. This provides additional reinforcement and support to the U-shaped base itself, reducing the likelihood of deformation after prolonged use. Utility Model Content

[0004] The purpose of this invention is to provide a concealed expansion joint for building roofs, which provides additional reinforcement and support to the U-shaped base, thereby reducing deformation of the U-shaped base after long-term use and solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a concealed expansion joint for building roofs, comprising a decorative surface layer disposed on the surface of the building base; two Z-shaped bases are fixedly connected to the inner cavity of the decorative surface layer, a waterstop is installed between the two Z-shaped bases, and a stainless steel cover plate is fixedly connected to the front side of the two decorative surface layers by bolts; trapezoidal support feet are welded to the left and right sides of the inner cavity of the Z-shaped bases; a support crossbar is welded to the inner cavity of the Z-shaped bases; two diagonal reinforcing strips are welded to the inner cavity of the Z-shaped bases; the two trapezoidal support feet are located on the rear side of the support crossbars, and the two diagonal reinforcing strips are located on the front side of the support crossbars.

[0006] Preferably, positioning strips are welded to the front side of the inner cavity on opposite sides of the two zig-shaped bases, and arc-shaped guide grooves are opened on the rear side of the inner cavity on opposite sides of the two zig-shaped bases.

[0007] Preferably, arc-shaped limiting strips are welded to both the left and right sides of the waterstop, and both arc-shaped limiting strips are located on the rear side of the waterstop.

[0008] Preferably, the surface of the arc-shaped limiting strip is slidably connected to the inner cavity of the arc-shaped guide groove, and the two opposite sides of the two zigzag bases are each welded with an insert strip.

[0009] Preferably, the top of the opposite side of the zigzag base is provided with an embedded groove.

[0010] Preferably, the surface of the stainless steel cover plate is provided with a water guide groove.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model, through the combined action of trapezoidal support feet, support crossbars and diagonal reinforcing bars, can reinforce the inner cavity of the Z-shaped base, thereby providing additional reinforcement support to the Z-shaped base and reducing deformation of the Z-shaped base after long-term use.

[0013] 2. By setting the inlay strip, this utility model can provide additional gripping and fixing force between the Z-shaped base and the inner cavity of the decorative surface layer, making the connection between the Z-shaped base and the decorative surface layer more secure.

[0014] 3. By setting the embedded groove, the decorative surface layer can be fitted into the inner cavity of the embedded groove, which makes the connection between the Z-shaped base and the decorative surface layer tighter and more stable. Attached Figure Description

[0015] in:

[0016] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of one embodiment of the present invention after being flipped over;

[0018] Figure 3 This is a schematic diagram of one embodiment of the present invention after being flipped over;

[0019] Figure 4 This is a schematic diagram of the main body of the zigzag base according to an embodiment of the present invention;

[0020] Figure 5 This is one embodiment of the present utility model. Figure 3 A magnified view of point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Building base layer; 2. Decorative surface layer; 3. Z-shaped base; 4. Waterstop strip; 5. Stainless steel cover plate; 6. Trapezoidal support foot; 7. Support crossbar; 8. Diagonal reinforcement strip; 9. Positioning strip; 10. Arc-shaped guide groove; 11. Arc-shaped limiting strip; 12. Embedded strip; 13. Inset groove; 14. Water guide groove. Detailed Implementation

[0023] In the following description, embodiments of the concealed expansion joint for building roofs according to the present invention will be described with reference to the accompanying drawings. Example 1

[0024] Figure 1-5 This invention illustrates a concealed expansion joint for building roofs according to an embodiment of the present invention. It includes: a decorative surface layer 2 disposed on the surface of a building base layer 1; two U-shaped bases 3 fixedly connected to the inner cavity of the decorative surface layer 2; a waterstop 4 installed between the two U-shaped bases 3; a stainless steel cover plate 5 fixedly connected to the front sides of the two decorative surface layers 2 by bolts; trapezoidal support feet 6 welded to the left and right sides of the inner cavity of the U-shaped bases 3; a support crossbar 7 welded to the inner cavity of the U-shaped bases 3; and two diagonal reinforcing strips 8 welded to the inner cavity of the U-shaped bases 3. The two trapezoidal support feet 6 are located behind the support crossbars 7, and the two diagonal reinforcing strips 8 are located behind the support crossbars 7. On the front side, positioning strips 9 are welded to the front side of the inner cavity of the two Z-shaped bases 3 on opposite sides. Arc-shaped guide grooves 10 are opened on the rear side of the inner cavity of the two Z-shaped bases 3 on opposite sides. Arc-shaped limiting strips 11 are welded to the left and right sides of the waterstop 4. The two arc-shaped limiting strips 11 are located on the rear side of the waterstop 4. The surface of the arc-shaped limiting strips 11 is slidably connected to the inner cavity of the arc-shaped guide grooves 10. Embedded strips 12 are welded to the opposite side of the two Z-shaped bases 3. By setting the embedded strips 12, the Z-shaped bases 3 and the inner cavity of the decorative surface layer 2 can obtain additional gripping and fixing force, which can make the connection between the Z-shaped bases 3 and the decorative surface layer 2 more firm. Example 2

[0025] Figure 1-5This invention illustrates a concealed expansion joint for building roofs, comprising: a decorative surface layer 2 disposed on the surface of a building base layer 1; two U-shaped bases 3 fixedly connected to the inner cavity of the decorative surface layer 2; a waterstop 4 installed between the two U-shaped bases 3; a stainless steel cover plate 5 fixedly connected to the front sides of the two decorative surface layers 2 by bolts; trapezoidal support feet 6 welded to the left and right sides of the inner cavity of the U-shaped bases 3; support crossbars 7 welded to the inner cavity of the U-shaped bases 3; and two... The diagonal reinforcing strip 8 and the two trapezoidal support feet 6 are both located on the rear side of the support crossbar 7. The two diagonal reinforcing strips 8 are both located on the front side of the support crossbar 7. The top of the two Z-shaped bases 3 on opposite sides is provided with an embedded groove 13. By setting the embedded groove 13, the decorative surface layer 2 can be fitted into the inner cavity of the embedded groove 13, which can make the connection between the Z-shaped base 3 and the decorative surface layer 2 tighter and more stable. The stainless steel cover plate 5 is provided with a water guide groove 14.

[0026] Working Principle: When using this utility model, the user first welds the trapezoidal support feet 6, support crossbars 7, and diagonal reinforcing bars 8 sequentially to the inner cavity of the Z-shaped base 3. Then, the Z-shaped base 3 is fixedly installed to the decorative surface layer 2. Next, the waterstop 4 is installed between the two Z-shaped bases 3, so that the Z-shaped base 3 limits the waterstop 4. At the same time, the rebound pushing force of the waterstop 4 provides additional fixing force to the two Z-shaped bases 3. Then, the stainless steel cover plate 5 is fixedly connected to the two Z-shaped bases 3, thereby making the expansion joint more aesthetically pleasing. Subsequently, during long-term use, the combined action of the trapezoidal support feet 6, support crossbars 7, and diagonal reinforcing bars 8 can provide a reinforced support effect to the inner cavity of the Z-shaped base 3, thus providing additional reinforcement support to the Z-shaped base 3 itself, reducing the deformation of the Z-shaped base 3 after long-term use.

[0027] In summary, the concealed expansion joint on the building roof, through the combined action of the trapezoidal support feet 6, the support crossbars 7, and the diagonal reinforcing strips 8, can reinforce the inner cavity of the U-shaped base 3, thereby providing additional reinforcement to the U-shaped base 3 and reducing deformation of the U-shaped base 3 after long-term use.

Claims

1. A concealed expansion joint for a building roof, characterized in that The decorative surface layer (2) is provided on the surface of the building base (1): the inner cavity of the decorative surface layer (2) is fixedly connected to two Z-shaped bases (3), a waterstop (4) is installed between the two Z-shaped bases (3), the front sides of the two decorative surface layers (2) are fixedly connected to a stainless steel cover plate (5) by bolts, trapezoidal support feet (6) are welded on both the left and right sides of the inner cavity of the Z-shaped base (3), a support crossbar (7) is welded on the inner cavity of the Z-shaped base (3), and two oblique reinforcing bars (8) are welded on the inner cavity of the Z-shaped base (3). The two trapezoidal support feet (6) are located on the rear side of the support crossbar (7), and the two oblique reinforcing bars (8) are located on the front side of the support crossbar (7).

2. The architectural roof concealing expansion joint according to claim 1, wherein, Positioning strips (9) are welded to the front side of the inner cavity on the opposite side of the two zig-shaped bases (3), and arc-shaped guide grooves (10) are opened on the rear side of the inner cavity on the opposite side of the two zig-shaped bases (3).

3. The concealed expansion joint for building roofs according to claim 2, characterized in that, Arc-shaped limiting strips (11) are welded on both the left and right sides of the waterstop (4), and both arc-shaped limiting strips (11) are located on the rear side of the waterstop (4).

4. The concealed expansion joint for building roofs according to claim 3, characterized in that, The surface of the arc-shaped limiting strip (11) is slidably connected to the inner cavity of the arc-shaped guide groove (10), and the two opposite sides of the two zigzag bases (3) are each welded with insert strips (12).

5. The concealed expansion joint for building roofs according to claim 4, characterized in that, The top of the two opposite sides of the two zigzag bases (3) are provided with embedded grooves (13).

6. The concealed expansion joint for building roofs according to claim 5, characterized in that, The stainless steel cover plate (5) has a water guide groove (14) on its surface.

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