Roof internal corner waterproof structure

Abstract

The utility model discloses a roof internal corner waterproof structure which is formed by a roof structure and a wall body structure protruding out of the upper surface of the roof structure and comprises a metal plate laid on the upper surface of the roof internal corner, and the metal plate covers the boundary line of the roof structure and the wall body structure. The upper end of the connecting piece is inserted into a notch formed in the side wall of the wall structure, and the lower end is fixed to the roof structure. The metal plate has excellent anti-cracking performance and stability, cracks cannot occur due to temperature shrinkage stress or stress concentration, the weak part of the internal corner, namely the junction of a roof and a wall body, can be effectively covered, and the problem that leakage is caused due to the fact that cracks are likely to occur at the internal corner of concrete self-waterproofing is fundamentally solved; meanwhile, the anti-aging capability of the metal material is far better than that of elastic materials such as waterproof coiled materials and asphalt factice, the waterproof performance can be kept for a long time, the defect that the blocking capability of the elastic materials is lost due to aging after three to five years is overcome, and the service life of the waterproof structure is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a waterproof structure for the inside corner of a roof. Background Technology

[0002] Waterproofing of roofs and walls is one of the core aspects of building construction. The quality of waterproofing directly affects the normal living function, service life, and safety of buildings. The economic losses caused by roof leaks are enormous every year.

[0003] Current technologies often employ self-waterproofing with concrete or use elastic materials such as waterproof membranes and asphalt sealants for waterproofing. Self-waterproofing with concrete is prone to cracking and leakage at corners due to temperature shrinkage stress and stress concentration in weak areas. Furthermore, elastic materials like waterproof membranes and asphalt sealants lose their elasticity with age, losing their ability to seal cracks after three to five years. Moreover, asphalt sealant waterproofing has an unsightly appearance and requires an additional cement mortar protective layer, which complicates the construction process. The expansion and contraction of the cement mortar protective layer under temperature differences can also crack the underlying waterproofing layer, leading to further leakage. Therefore, it is necessary to optimize the waterproofing structure at roof corners. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a roof corner waterproofing structure that can fundamentally solve the problem of leakage caused by cracks in the self-waterproofing concrete at the inside corner, and at the same time, has a much better anti-aging ability than elastic materials such as waterproof membranes and asphalt sealant. It can maintain waterproof performance for a long time and avoid the defect of elastic materials losing their sealing ability due to aging after three to five years, thus greatly extending the service life.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a waterproof structure for the inside corner of the roof, wherein the inside corner of the roof is formed by a roof structure and a wall structure protruding from its upper surface, including a metal plate laid on the upper surface of the inside corner of the roof, the metal plate covering the boundary line between the roof structure and the wall structure, and its upper end is inserted into a groove formed on the side wall of the wall structure, and its lower end is fixed to the roof structure.

[0006] Furthermore, the groove slopes downwards from the inside to the outside of the wall structure. This sloping structure guides the small amount of rainwater that seeps into the groove to the outside of the wall, preventing rainwater from accumulating in the groove and seeping into the interior of the wall structure, thus further enhancing the waterproofing effect and reducing the risk of leakage.

[0007] Furthermore, the inclination angle β of the groove is 20°-30°. An inclination angle of 20°-30° ensures smooth drainage of rainwater without damaging the wall surface of the wall structure due to an excessively large inclination angle, thus balancing drainage efficiency and structural stability.

[0008] Furthermore, the distance La between the open end of the groove and the upper surface of the roof structure is 200mm-400mm. This height is slightly higher than the splash height of rainwater, which can reduce the probability of rainwater splashing into the groove.

[0009] Furthermore, the depth Lb of the groove is 40mm-60mm; the depth Lc of the metal plate inserted into the groove is 30mm-50mm. Setting Lb to 40mm-60mm avoids damaging the stress on the wall structure due to excessive groove depth. At the same time, setting Lc to 30mm-50mm ensures sufficient fixing strength after the metal plate is inserted into the groove, preventing the metal plate from falling off under external forces and ensuring the reliability of the connection between the metal plate and the wall structure.

[0010] Furthermore, the groove is filled with sealant. The sealant fills the gap between the metal plate and the groove, forming a secondary seal that further prevents rainwater from seeping in through the groove gaps, providing double protection in conjunction with the waterproof function of the metal plate.

[0011] Furthermore, a grid groove, formed by interwoven horizontal and vertical grooves, is formed on the back of the upper half of the metal plate; the horizontal grooves extend horizontally through the metal plate, and the top of the vertical grooves extends through the upper edge of the metal plate. The grid grooves guide the sealant into the gap between the metal plate and the wall structure, allowing the sealant to fill the space more fully, enhancing the adhesion between the metal plate and the wall structure, preventing loosening between the metal plate and the wall, and also preventing or reducing rainwater infiltration. Simultaneously, the vertical grooves extending through the upper edge of the metal plate at their tops better guide the sealant into the horizontal grooves; while the horizontal grooves extending horizontally through the metal plate allow the sealant entering the horizontal grooves to solidify and form a complete horizontal sealing strip, thereby preventing rainwater from seeping downwards.

[0012] When there are multiple metal plates, adjacent metal plates are stacked sequentially, with the upper metal plate pressing down on the lower metal plate. This stacking structure creates a waterproof barrier at the joints between adjacent metal plates, allowing rainwater to flow down the surface of the upper metal plate without seeping in through the joints.

[0013] Furthermore, the metal plate is made of aluminum. Aluminum plates have excellent corrosion resistance and aging resistance, unlike waterproof membranes and asphalt sealants which lose elasticity and waterproofing ability due to aging, resulting in a service life far exceeding three to five years. At the same time, aluminum plates have a clean surface and a good appearance, eliminating the need for an additional cement mortar protective layer like asphalt sealants, simplifying the construction process and preventing the waterproof layer from cracking due to deformation of the cement mortar protective layer, further reducing the risk of leakage.

[0014] Furthermore, the system also includes tiles laid on the upper surface of the roof structure, which cover the lower edge of the metal sheet. Covering the lower edge of the metal sheet with tiles protects the lower end of the metal sheet, preventing damage to the fixing points between the metal sheet and the roof structure from external factors (such as sun exposure, rain, and impacts), ensuring the sealing of the fixing points. Simultaneously, the tiles themselves also have a certain degree of waterproofing, creating a synergistic waterproofing effect with the metal sheet, further enhancing the waterproofing capability at the roof's internal corners.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The metal plate used in this invention possesses excellent crack resistance and stability, preventing cracks from forming due to temperature shrinkage stress or stress concentration. It effectively covers the vulnerable corner where the roof meets the wall, fundamentally solving the problem of leakage caused by cracks in self-waterproofing concrete at corners, a problem common in previous technologies. Furthermore, the metal material's anti-aging ability is far superior to that of elastic materials such as waterproof membranes and asphalt sealant, maintaining its waterproof performance for a long time. This avoids the defect of elastic materials losing their sealing ability after three to five years due to aging, significantly extending the service life of the waterproof structure. Moreover, by setting a groove on the side wall of the wall structure and inserting the upper end of the metal plate into the groove, the connection between the two is effectively strengthened, preventing or reducing the probability of rainwater entering the back of the metal plate and reaching the junction of the wall and roof structures along the gap between them. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the waterproof structure at the inside corner of the roof in Example 1;

[0018] Figure 2 This is a partial cross-sectional schematic diagram of the waterproof structure at the inside corner of the roof in Example 1.

[0019] Figure 3 This is a schematic diagram of the metal plate structure in Example 1;

[0020] Figure 4 This is a partial front view of the roof corner waterproofing structure in Example 2.

[0021] Figure 5 This is a partial front view of the waterproof structure at the inside corner of the roof in Example 3.

[0022] The following are the labels in the attached diagram: 1. Roof structure; 2. Wall structure; 21. Groove; 3. Metal plate; 31. Horizontal groove; 32. Vertical groove; 4. Rivet; 5. Tile. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] like Figures 1 to 3 As shown, in this embodiment, the roof corner is formed by a roof structure 1 and a wall structure 2 protruding from its upper surface. The upper surface of the roof structure 1 is horizontal. The waterproof structure of the roof corner includes a metal plate 3 laid on the upper surface of the roof corner. The metal plate 3 covers the boundary line between the roof structure 1 and the wall structure 2, and its upper end is inserted into a groove 21 formed on the side wall of the wall structure 2, while its lower end is fixed to the roof structure 1. Specifically, the groove 21 slopes downward at 30° from the inside to the outside of the wall structure 2, and the distance La between the opening end of the groove 21 and the upper surface of the roof structure 1 is 300mm, and its depth Lb is 50mm. The metal plate is made of 1.2mm-1.5mm thick aluminum plate, with a single piece size of 600mm wide × 800mm high (in other embodiments, it can be adjusted according to the actual roof size). According to the distance between the groove and the inside corner line, it is processed into a "Z" shaped zigzag shape (where the upper end is bent to form an ear plate with a width of 30mm to 50mm for insertion into the groove); the back of the upper half of the metal plate 3 has a grid groove formed by the interweaving of horizontal grooves 31 and vertical grooves 32; the horizontal grooves 31 penetrate the metal plate 3 horizontally, and the top of the vertical grooves 32 penetrates the upper edge of the metal plate 3; there are multiple metal plates 3, and adjacent metal plates 3 are stacked in sequence, with the upper metal plate 3 pressing on the lower metal plate 3 (the metal plate is very thin, the width of the groove is greater than the thickness of the metal plate, so even if there is a certain height difference after the metal plates are stacked, they can still be inserted into the groove). Furthermore, weather-resistant sealant is injected into the groove 21. This sealant fills the gap between the metal plate and the groove, forming a secondary seal that further prevents rainwater from seeping in through the gap in the groove 21, providing double protection in conjunction with the waterproofing function of the metal plate. In addition, the roof corner waterproofing structure also includes tiles 5 laid on the upper surface of the roof structure 1, covering the lower edge of the metal plate 3. Covering the lower edge of the metal plate with tiles protects its lower end, preventing damage to the fixing points between the metal plate and the roof structure from external factors (such as sun exposure, rain, and impacts), ensuring the sealing of the fixing points. Simultaneously, the tiles themselves also have a certain degree of waterproofing function, creating a synergistic waterproofing effect with the metal plate, further enhancing the waterproofing capability of the roof corner.

[0026] During construction, firstly, grooves are cut into the wall structure, and the metal plate 3 is processed into a "Z" shaped zigzag according to the distance between the groove and the inside corner line. Then, impurities in the groove are blown out with an air gun, and weather-resistant sealant is injected. The upper end of the metal plate 3 is hammered and pressed into the groove, and weather-resistant sealant is injected again to fix the metal plate for a second time, ensuring the sealant is injected into the grid groove. Next, the metal plate 3 is pressed tightly against the side wall of the wall structure and the upper surface of the roof structure 1 by hammering and pressing, and the metal plate is fixed to the upper surface of the roof structure 1 with rivets 4 at intervals of 300mm to 500mm. At the same time, weather-resistant sealant is used to fix and seal the edges of the metal plate 3 to the upper surface of the roof structure 1. Finally, tiles 5 are laid at the lower edge of the metal plate 3.

[0027] Example 2

[0028] like Figure 4 As shown, this embodiment is similar to Embodiment 1, except that the upper surface of the roof structure 1 is inclined. In this embodiment, the slot 21 is parallel to the upper surface of the roof structure 1.

[0029] During construction, metal plates 3 are laid from the bottom of the slope upwards, with the upper metal plate 3 tightly pressed on top of the lower metal plate 3, with an overlap width of 40mm to 60mm.

[0030] Example 3

[0031] like Figure 5 As shown, this embodiment is similar to embodiment 2, except that the slot 21 is segmented.

[0032] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A waterproof structure for the inside corner of a roof, wherein the inside corner of the roof is formed by a roof structure (1) and a wall structure (2) protruding from its upper surface, characterized in that: The metal plate (3) is laid on the upper surface of the roof corner, the metal plate (3) covers the boundary line between the roof structure (1) and the wall structure (2), and its upper end is inserted into the groove (21) formed on the side wall of the wall structure (2), and its lower end is fixed to the roof structure (1).

2. The roof internal corner waterproofing structure according to claim 1, characterized in that: The slot (21) slopes downward from the inside to the outside of the wall structure (2).

3. The roof internal corner waterproofing structure according to claim 2, characterized in that: The inclination angle β of the slot (21) is 20°-30°.

4. The roof internal corner waterproofing structure according to claim 1, characterized in that: The distance La between the opening end of the slot (21) and the upper surface of the roof structure (1) is 200mm-400mm.

5. The roof internal corner waterproofing structure according to claim 1, characterized in that: The depth Lb of the slot (21) is 40mm-60mm; the depth Lc of the metal plate (3) inserted into the slot (21) is 30mm-50mm.

6. The roof internal corner waterproofing structure according to claim 1, characterized in that: The groove (21) is filled with sealant.

7. The roof internal corner waterproofing structure according to claim 6, characterized in that: The back of the upper half of the metal plate (3) is formed with a grid groove formed by interlacing horizontal grooves (31) and vertical grooves (32); the horizontal groove (31) runs through the metal plate (3) in the transverse direction, and the top of the vertical groove (32) runs through the upper edge of the metal plate (3).

8. The roof internal corner waterproofing structure according to claim 1, characterized in that: When there are multiple metal plates (3), adjacent metal plates (3) are stacked in sequence, and the metal plate (3) located above is pressed on the metal plate (3) located below.

9. The roof internal corner waterproofing structure according to claim 1, characterized in that: The metal plate (3) is made of aluminum.

10. The roof internal corner waterproofing structure according to claim 1, characterized in that: It also includes tiles (5) laid on the upper surface of the roof structure (1), the tiles (5) covering the lower edge of the metal plate (3).

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