Outer wall apron flashing and outer wall waterproof structure

Abstract

The utility model discloses an apron flashing for an outer wall and an outer wall waterproof structure, and the apron flashing comprises a base part, a first bending part which is formed by bending and extending from one end of the base part, and a second bending part which is formed by bending and extending from the other end of the base part, the first bending part and the second bending part are located on the same side of the base part and extend outwards relative to the base part. Therefore, the base part can be arranged on the second waterproof layer, and the second bending part extends outwards relative to the base part, so that the second bending part can guide rainwater to be away from the second waterproof layer, the risk that the rainwater enters the outer wall can be reduced even under the condition that the first waterproof layer and the second waterproof layer are invalid, and the waterproof performance of the outer wall is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water shedding boards, in particular to a water shedding board for an exterior wall and an exterior wall waterproof structure. Background Art

[0002] As a representative of green buildings, steel structures have good comprehensive material performance, high material utilization rate, superior safety performance, all components have been prefabricated in factories, and the construction progress is fast. With the above advantages, steel structure buildings are mostly used in public buildings. During the construction process, the exterior wall 1a is decorated with aluminum curtain walls, which are simple, beautiful and atmospheric. In most cases, the building exterior wall materials are aerated blocks, ALC strips, shale bricks, etc. The space between the top of the wall and the lower flange of the steel beam is sealed with mortar to play a sealing role.

[0003] like Figure 1 As shown, after the wall construction is completed, the construction workers construct a waterproof mortar layer 4a on the outer surface of the wall, and finally install a series of curtain wall engineering related construction such as the curtain wall frame and the curtain wall aluminum plate 2a. The outermost curtain wall aluminum plate 2a and the waterproof mortar layer 4a on the outer side of the outer wall together form the waterproof system of the outer wall, reducing the water seepage phenomenon on the inner side of the outer wall 1a.

[0004] However, due to construction process problems, uneven construction skills of workers, etc., the waterproof system formed by the curtain wall aluminum plate 2a and the waterproof mortar layer 4a has the possibility of partial waterproof failure. In addition, since the steel beam 5a and the mortar are made of different materials, and the surface of the steel beam is sprayed with anti-corrosion paint to prevent rust, the mortar on the lower surface of the lower flange of the steel beam 5a is not particularly good in adhesion to the steel beam itself. Similarly, there are steel truss floor decking and concrete on the upper surface of the upper flange of the steel beam 5a. Due to the presence of materials of different materials at their junction, gaps are easily generated there, making this place also a weak link in the waterproof performance of the exterior wall. Once the curtain wall aluminum plate 2a and the waterproof mortar layer 4a fail to be waterproof, rainwater will first enter the inner side of the curtain wall aluminum plate 2a, then flow down along the outer wall, and then seep into the room from the upper surface of the upper flange of the steel beam 5a or the lower surface of the lower flange of the steel beam, causing signs of water seepage on the top of the indoor wall on the side of the outer wall. In mild cases, the wall will become moldy and black, affecting the appearance, and in severe cases, it may affect the use, and this situation is difficult to repair radically.

[0005] In view of the above-mentioned shortcomings, it is necessary to design a water-shedding board for an exterior wall and an exterior wall waterproof structure to overcome the above-mentioned shortcomings. Utility Model Content

[0006] Therefore, the technical problem to be solved by the utility model is that in the prior art, an exterior wall waterproofing system is formed by waterproofing through curtain wall aluminum plates and waterproof mortar layers. Once this exterior wall waterproofing system fails, water can easily penetrate into the room, thereby providing an exterior wall sheathing board and an exterior wall waterproofing structure.

[0007] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0008] A shedding board for an exterior wall comprises a base, a first bent portion formed by bending and extending from one end of the base, and a second bent portion formed by bending and extending from the other end of the base, wherein the first bent portion and the second bent portion are located on the same side of the base and both extend outward relative to the base.

[0009] Furthermore, the length of the first bending portion is smaller than the length of the second bending portion.

[0010] Further, the length of the first bending portion is 0.8 cm to 1.2 cm, and / or the length of the second bending portion is 5.5 cm to 6.5 cm.

[0011] Furthermore, the angle between the first bending portion and the base is 30 degrees to 40 degrees, and / or the angle between the second bending portion and the base is 40 degrees to 50 degrees.

[0012] Furthermore, the water-shedding plate is a galvanized steel plate.

[0013] Furthermore, the water-shedding plate has a thickness of 1.5 mm and / or a width of 320 mm.

[0014] The technical solution of the utility model has the following advantages:

[0015] 1. The utility model provides a shedding board for an exterior wall, which includes a base, a first bent portion formed by bending and extending from one end of the base, and a second bent portion formed by bending and extending from the other end of the base. The first bent portion and the second bent portion are located on the same side of the base, and both extend outward relative to the base. In this way, the base can be installed on the second waterproof layer, and because the second bent portion extends outward relative to the base, the second bent portion can guide rainwater away from the second waterproof layer. Even if the first waterproof layer and the second waterproof layer fail, the risk of rainwater entering the exterior wall can be reduced, thereby improving the waterproof performance of the exterior wall.

[0016] 2. The external wall shedding board provided by the utility model is a galvanized steel plate, which can improve the weather resistance of the shedding board.

[0017] 3. The angle between the first bent portion and the base of the external wall provided by the utility model is 30 to 40 degrees. If the angle is too small, the gap between the first bent portion and the second waterproof layer is small, and it is not easy to fill the sealant, and / or the angle between the second bent portion and the base is 40 to 50 degrees. If the angle is too small, the distance between rainwater and the external wall 1 is close, which is not conducive to waterproofing.

[0018] An exterior wall waterproof structure, comprising:

[0019] First waterproof layer;

[0020] A second waterproof layer is arranged on the inner side of the first waterproof layer, and the second waterproof layer is suitable for being arranged on the outer surface of the outer wall;

[0021] The aforementioned shedding board for external wall has a base portion fixed to the second waterproof layer, and the free ends of the first bent portion and the second bent portion of the shedding board are both away from the second waterproof layer.

[0022] Furthermore, a gap between the first bending portion and the second waterproof layer is filled with sealant, and the sealant covers the top end of the first bending portion.

[0023] Furthermore, the base of the water-shedding board is fixed to the second waterproof layer by at least two rows of fasteners, and the spacing between the two rows of fasteners is 300 mm to 400 mm.

[0024] Furthermore, a root portion of the second bent portion connected to the base extends downward beyond an upper flange of a steel beam in the exterior wall.

[0025] The technical solution of the utility model has the following advantages:

[0026] 1. The exterior wall waterproof structure provided by the utility model comprises a first waterproof layer, a second waterproof layer and the aforementioned exterior wall shedding board, wherein the second waterproof layer is arranged on the inner side of the first waterproof layer, the second waterproof layer is arranged on the outer surface of the exterior wall, the base of the shedding board is fixed to the second waterproof layer, the first bent portion and the free ends of the second bent portion of the shedding board are both away from the second waterproof layer, so that the second bent portion can guide rainwater away from the second waterproof layer, even when the first waterproof layer and the second waterproof layer fail, the risk of rainwater entering the exterior wall can be reduced, thereby improving the waterproof performance of the exterior wall.

[0027] 2. In the exterior wall waterproof structure provided by the utility model, the gap between the first bent portion of the sheathing plate and the second waterproof layer is filled with sealant. Preferably, the sealant covers the top of the first bent portion. In this way, rainwater can be prevented from flowing downward from the gap between the first bent portion and the second waterproof layer into the exterior wall, thereby ensuring the waterproof effect of the exterior wall.

[0028] 3. In the exterior wall waterproof structure provided by the utility model, the root of the second bent portion connected to the base extends downward over the upper flange of the steel beam in the exterior wall. In this way, the upper flange of the steel beam can be shielded to further prevent rainwater from entering the exterior wall along the upper flange of the steel beam, thereby further improving the waterproof performance of the exterior wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a cross-sectional schematic diagram of the waterproof mortar and the curtain wall aluminum plate arranged on the outer side of the exterior wall in the prior art;

[0031] Figure 2 It is a side view of a water-shedding plate in an embodiment of the utility model;

[0032] Figure 3 It is a side view schematic diagram of the cooperation between the water-shedding board, cement nails, and sealant in the embodiment of the utility model;

[0033] Figure 4 It is a cross-sectional schematic diagram of the combination of the sheathing board, the first waterproof layer, the second waterproof layer, the outer wall, and the steel beam in the embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Exterior wall; 2. First waterproof layer; 3. Drip board; 31. Base; 32. First bending portion; 33. Second bending portion; 330. Root; 4. Second waterproof layer; 5. Steel beam; 6. Fasteners; 7. Sealant. DETAILED DESCRIPTION

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] like Figures 1 to 4 As shown, this embodiment provides a water-shedding board for an exterior wall, the water-shedding board 3 is installed on the outer surface of the second waterproof layer 4, and the second waterproof layer 4 is provided on the outer surface of the exterior wall 1. A first waterproof layer 2 is also provided on the outer side of the second waterproof layer 4, and the second waterproof layer 4 is spaced apart from the first waterproof layer 2. Specifically, the second waterproof layer 4 is a waterproof mortar layer, and the first waterproof layer 2 is a curtain wall aluminum plate.

[0042] The water-shedding plate 3 is a galvanized steel plate, and the thickness of the water-shedding plate 3 is 1.5 mm and the width is 320 mm. The water-shedding plate 3 includes a base 31, a first bending portion 32 formed by bending and extending from one end of the base 31, and a second bending portion 33 formed by bending and extending from the other end of the base 31. The first bending portion 32 and the second bending portion 33 are located on the same side of the base 31, and both extend outward relative to the base 31. The length of the first bending portion 32 is less than the length of the second bending portion 33. Specifically, the length of the first bending portion 32 is 0.8 cm to 1.2 cm, preferably 1 cm; the length of the second bending portion 33 is 5.5 cm to 6.5 cm, preferably 6 cm. The angle between the first bend portion 32 and the base 31 is 30 to 40 degrees, preferably 35 degrees. If the angle is too small, the gap between the first bend portion 32 and the second waterproof layer is small, and it is not easy to fill the sealant; the angle between the second bend portion 33 and the base 31 is 40 to 50 degrees, preferably 45 degrees. If the angle is too small, the distance between rainwater and the exterior wall 1 is close, which is not conducive to waterproofing.

[0043] The present embodiment provides a water-shedding board for an exterior wall, wherein the water-shedding board 3 includes a base 31, a first bent portion 32 formed by bending and extending from one end of the base 31, and a second bent portion 33 formed by bending and extending from the other end of the base 31. The first bent portion 32 and the second bent portion 33 are located on the same side of the base 31, and both extend outward relative to the base 31. In this way, the base 31 can be installed on the second waterproof layer 4, and because the second bent portion 33 extends outward relative to the base 31, the second bent portion 33 can guide rainwater away from the second waterproof layer 4. Even in the case where both the first waterproof layer 2 and the second waterproof layer 4 fail, the risk of rainwater entering the exterior wall 1 can be reduced, thereby improving the waterproof performance of the exterior wall 1.

[0044] Example 2

[0045] like Figures 1 to 4 As shown, this embodiment provides an exterior wall waterproof structure, including a first waterproof layer 2, the exterior wall water-shedding board 3 in embodiment 1, and a second waterproof layer 4. Specifically, the second waterproof layer 4 is a waterproof mortar layer, and the first waterproof layer 2 is a curtain wall aluminum plate.

[0046] The second waterproof layer 4 is arranged on the inner side of the first waterproof layer 2, and the second waterproof layer 4 is spaced apart from the first waterproof layer 2. The second waterproof layer 4 is arranged on the outer surface of the exterior wall 1. The base 31 of the water-shedding board 3 is fixed together with the second waterproof layer 4. The first bending portion 32 and the second bending portion 33 of the water-shedding board 3 are located on the same side of the base 31, and both extend outward relative to the base 31. The free ends of the first bending portion 32 and the second bending portion 33 of the water-shedding board 3 are both away from the second waterproof layer 4, so that the first bending portion 32 and the second bending portion 33 are both spaced apart from the second waterproof layer 4.

[0047] The base 31 of the sheathing board 3 is fixed to the second waterproof layer 4 by at least two rows of fasteners 6, the spacing between the two rows of fasteners 6 is 300mm to 400mm, preferably, the spacing between the two rows of fasteners 6 is 350mm, specifically, the fasteners 6 are cement nails.

[0048] The gap between the first bend 32 of the water-shedding plate 3 and the second waterproof layer 4 is filled with sealant. Preferably, the sealant is a silicone weather-resistant sealant, and the sealant covers the top of the first bend 32. In this way, rainwater can be prevented from flowing downward through the gap between the first bend 32 of the water-shedding plate 3 and the exterior wall 1 and infiltrating the exterior wall 1, thereby ensuring the waterproof performance of the exterior wall 1. In addition, the root 330 of the second bend 33 connected to the base 31 extends downward over the upper flange of the steel beam 5 in the exterior wall 1. In this way, the second bend 33 of the water-shedding plate 3 can shield the upper flange of the steel beam 5, further preventing rainwater from entering the exterior wall 1 along the upper flange of the steel beam 5, thereby further improving the waterproof performance of the exterior wall 1.

[0049] In this embodiment, a first waterproof layer 2, a second waterproof layer 4 and a water-shedding plate 3 are included. The second waterproof layer 4 is arranged on the inner side of the first waterproof layer 2, and the second waterproof layer 4 is arranged on the outer surface of the exterior wall 1. The base 31 of the water-shedding plate 3 is fixed together with the second waterproof layer 4. The first bending portion 32 and the second bending portion 33 of the water-shedding plate 3 are located on the same side of the base 31, and both extend outward relative to the base 31. The free ends of the first bending portion 32 and the second bending portion 33 of the water-shedding plate 3 are both away from the second waterproof layer 4, so that the first bending portion 32 and the second bending portion 33 are both arranged with a gap from the second waterproof layer 4. In this way, the second bending portion 33 can guide rainwater away from the second waterproof layer. Even when the first waterproof layer and the second waterproof layer fail, the risk of rainwater entering the exterior wall can be reduced, thereby improving the waterproof performance of the exterior wall.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A water-shedding board for an exterior wall, characterized in that: The water-shedding plate (3) comprises a base (31), a first bent portion (32) formed by bending and extending from one end of the base (31), and a second bent portion (33) formed by bending and extending from the other end of the base (31), wherein the first bent portion (32) and the second bent portion (33) are located on the same side of the base (31) and both extend outward relative to the base (31).

2. The water-shedding board for exterior wall according to claim 1, characterized in that: The length of the first bent portion (32) is smaller than the length of the second bent portion (33).

3. The water-shedding board for exterior wall according to claim 2, characterized in that: The length of the first bent portion (32) is 0.8 cm to 1.2 cm, and / or the length of the second bent portion (33) is 5.5 cm to 6.5 cm.

4. The water-shedding board for exterior wall according to claim 1 or 2, characterized in that: The angle between the first bent portion (32) and the base (31) is 30 to 40 degrees, and / or the angle between the second bent portion (33) and the base (31) is 40 to 50 degrees.

5. The water-shedding board for exterior wall according to claim 1, characterized in that: The water-shedding plate (3) is a galvanized steel plate.

6. The water-shedding board for exterior wall according to claim 1, characterized in that: The water-shedding plate (3) has a thickness of 1.5 mm and / or a width of 320 mm.

7. An external wall waterproof structure, characterized in that: include: A first waterproof layer (2); A second waterproof layer (4) is arranged on the inner side of the first waterproof layer (2), and the second waterproof layer (4) is suitable for being arranged on the outer surface of the outer wall (1); The water-shedding board for exterior walls according to any one of claims 1 to 6, wherein the base (31) of the water-shedding board (3) is fixed to the second waterproof layer (4), and the free ends of the first bent portion (32) and the second bent portion (33) of the water-shedding board (3) are both away from the second waterproof layer (4).

8. The exterior wall waterproof structure according to claim 7, characterized in that: The gap between the first bent portion (32) and the second waterproof layer (4) is filled with a sealant (7), and the sealant (7) covers the top end of the first bent portion (32).

9. The exterior wall waterproof structure according to claim 7, characterized in that: The base (31) of the water-shedding plate (3) is fixed to the second waterproof layer (4) by at least two rows of fasteners (6), and the spacing between the two rows of fasteners (6) is 300 mm to 400 mm.

10. The exterior wall waterproof structure according to claim 7, characterized in that: The root (330) of the second bent portion (33) connected to the base (31) extends downward beyond the upper flange of the steel beam (5) in the exterior wall (1).

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