Concealed deformation joint

Abstract

A concealed deformation joint effectively solves the problem that a building facade is not attractive. Comprising retaining walls located on the two sides of a deformation joint wall body, a first heat preservation cushion block is arranged above the retaining walls, a fireproof isolation belt and a second heat preservation cushion block are arranged above the wall body, the upper surfaces of the first heat preservation cushion block, the fireproof isolation belt and the second heat preservation cushion block are flush, and a waterproof plate is arranged above the first heat preservation cushion block, the fireproof isolation belt and the second heat preservation cushion block; a waterproof cushion layer is arranged above the waterproof plate, and roof tiles are connected above the waterproof cushion layer through roof battens; the waterproof ventilation window is simple and ingenious in structure and convenient to use, and has remarkable waterproof and ventilation effects.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a concealed expansion joint. Background Art

[0002] Expansion joints are essential structures in architectural design to address deformation caused by temperature fluctuations, uneven settlement, and other factors. Traditionally, expansion joints on pitched roofs require retaining walls 250mm above the finished surface on both sides, creating a "scar" protruding from the roof. This often detracts from the aesthetics of the building's facade, and in some high-quality commercial residential projects, the aesthetic requirements of the owners are often not met. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a concealed expansion joint, which effectively solves the problem of unsightly building facades.

[0004] The technical solution to solve the technical problem is: a concealed expansion joint, including retaining walls located on both sides of the expansion joint wall, a first insulation pad is arranged above the retaining wall, a fire isolation belt and a second insulation pad are arranged above the wall, the upper surfaces of the first insulation pad, the fire isolation belt and the second insulation pad are flush, a waterproof board is provided above the first insulation pad, the fire isolation belt and the second insulation pad, a waterproof cushion layer is provided above the waterproof board, and roof tiles are connected to the waterproof cushion layer through tile hanging strips.

[0005] Preferably, the retaining wall is 80 mm high.

[0006] Preferably, a waterproof strip is provided above the retaining walls on both sides, and the waterproof strip is curved between the two retaining walls.

[0007] Preferably, a heat-insulating block is provided between the retaining walls on both sides.

[0008] Preferably, the waterproof board is formed by overlapping corrugated boards.

[0009] Preferably, the waterproof cushion layer is made of a waterproof and breathable membrane.

[0010] Preferably, the roof tiles are connected with single-sided overlapping claws above the expansion joints.

[0011] The utility model has a simple and ingenious structure, is easy to use, and has significant waterproof and ventilation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the concealed expansion joint of the utility model. DETAILED DESCRIPTION

[0013] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Depend on Figure 1 It can be seen that the concealed expansion joint includes retaining walls 2 located on both sides of the expansion joint wall 1. The retaining wall 2 is 80 mm high, which is greatly reduced compared to the traditional retaining wall 2. It not only ensures the waterproof effect of the retaining wall 2, but also has the conditions to keep the asphalt waterproof board 6 and the roof tile 8 flat. A first insulation pad 3 is set above the retaining wall 2, and a fire isolation belt 4 and a second insulation pad 5 are set above the wall 1. The upper surfaces of the first insulation pad 3, the fire isolation belt 4 and the second insulation pad 5 are flush. The first insulation pad 3, the fire isolation belt 4 and the second insulation pad 5 are provided with a waterproof board 6. The waterproof board 6 adopts a professional overlapping corrugated asphalt waterproof board 6, which has a certain rigidity and toughness. The wavelength of the upper layer is longer and the wavelength of the lower layer is shorter. After overlapping, displacement redundancy of the indoor layer is formed, which can eliminate the horizontal and vertical relative displacement of the two-story building. A waterproof cushion layer 7 is provided above the waterproof board 6. The waterproof cushion layer 7 adopts a waterproof and breathable membrane, which can effectively prevent moisture penetration while allowing air circulation. Roof tiles 8 are connected to the waterproof cushion layer 7 through tile hanging strips.

[0015] In the present invention, the corrugated structure of the waterproof plate 6 can pass through the air duct to improve the ventilation performance.

[0016] In the present invention, waterproof strips 9 are provided above the retaining walls 2 on both sides. The waterproof strips 9 are curved between the two retaining walls 2. During the expansion and contraction deformation of the wall 1, the waterproof strips 9 can expand and contract and cooperate with the retaining walls 2 to prevent moisture penetration.

[0017] An insulation block 10 is provided between the retaining walls 2 on both sides. It is made of Class A flexible insulation material and has a certain elasticity. It can fill the gap between the retaining walls 2 on both sides and achieve sealing while ensuring ventilation of the deformation joint.

[0018] The waterproof cushion layer 7 is made of high-performance waterproof and breathable materials, such as polyurethane waterproof coating, polytetrafluoroethylene breathable membrane, etc. These materials have good weather resistance, aging resistance and corrosion resistance, and can ensure long-term use effect.

[0019] The roof tiles 8 are connected with single-sided overlapping claws above the deformation joints, allowing the roof tiles 8 to slide to eliminate displacement.

[0020] Compared with the prior art, the utility model has the following beneficial effects: achieving a balance between waterproofing and ventilation: ensuring the ventilation performance of the expansion joint, and ensuring the waterproof performance through a reasonable sealing design.

Claims

1. A concealed expansion joint, characterized in that: The invention comprises retaining walls (2) located on both sides of a deformation joint wall (1), a first thermal insulation pad (3) being arranged above the retaining wall (2), a fireproof isolation belt (4) and a second thermal insulation pad (5) being arranged above the wall (1), the upper surfaces of the first thermal insulation pad (3), the fireproof isolation belt (4) and the second thermal insulation pad (5) being flush, a waterproof board (6) being arranged above the first thermal insulation pad (3), the fireproof isolation belt (4) and the second thermal insulation pad (5), a waterproof cushion layer (7) being arranged above the waterproof board (6), and a roof tile (8) being connected above the waterproof cushion layer (7) via a tile hanging strip.

2. A concealed expansion joint according to claim 1, characterized in that: The retaining wall (2) is 80 mm high.

3. The concealed expansion joint according to claim 1, characterized in that: Waterproof strips (9) are provided above the retaining walls (2) on both sides, and the waterproof strips (9) are curved between the two retaining walls (2).

4. The concealed expansion joint according to claim 1, characterized in that: A heat-insulating block (10) is provided between the retaining walls (2) on both sides.

5. The concealed expansion joint according to claim 1, characterized in that: The waterproof board (6) is formed by overlapping corrugated boards.

6. The concealed expansion joint according to claim 1, characterized in that: The waterproof cushion layer (7) adopts a waterproof and breathable membrane.

7. The concealed expansion joint according to claim 1, characterized in that: The roof tiles (8) are connected by single-sided overlapping claws above the deformation joints.

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