Inverted waterproof roof structure with double drainage function
By using a jointing device to position the insulation board in an inverted roof structure, the problem of easy blockage of the drainage channel in the insulation layer is solved, uniform joints are achieved, drainage efficiency and waterproof performance are improved, and the service life of the roof structure is extended.
Patent Information
- Application Number
- CN202422616396.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In existing inverted roof structures, the drainage channels of the insulation layer are prone to blockage, leading to potential leakage of the waterproof layer. Furthermore, the insulation layer is susceptible to freeze-thaw cycles, resulting in poor service life and performance.
The system employs a jointing device, including a jointing plate and a transition plate. The vertical plate is positioned against the insulation board to ensure uniform joint width. Combined with a perforated design and adjustable structure, it improves drainage efficiency and stability.
It effectively prevents insulation board displacement, ensures consistent joint width, reduces blockage, improves waterproofing and insulation performance, and extends the lifespan of the roof structure.
Smart Images

Figure CN223647337U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of building waterproofing, and in particular to an inverted waterproof roof structure with dual drainage. Background Technology
[0002] As building quality continues to improve, roof waterproofing methods are also constantly being updated. How to improve roof waterproofing construction technology is a key issue that most construction companies are actively addressing. Currently, roof construction commonly uses two types of roofs: upright roofs and inverted roofs. Upright roofs involve applying the insulation layer first, followed by the waterproofing layer, while inverted roofs involve applying the waterproofing layer first, followed by the insulation layer. Therefore, the advantage of inverted roofs over upright roofs is that the waterproofing layer is better protected, its lifespan is extended, and the actual waterproofing effect of the roof is enhanced.
[0003] However, because the insulation layer is located above the waterproof layer, water is prone to accumulate inside the insulation layer. Over time, the insulation layer is easily damaged by freeze-thaw cycles, affecting its service life and insulation performance.
[0004] To this end, the utility model patent with announcement number CN208702024U specifically discloses an inverted roof dual drainage structure that combines open and closed drainage. It adopts a combination of an invisible floor drain device, a graded gravel drainage channel and a drainage ditch, so that water in the insulation layer is secretly drained into the invisible floor drain device, while rainwater and other water are drained into the invisible floor drain device through an open drainage method. The combined drainage through open and closed methods reduces the risk of leakage of the waterproof layer.
[0005] However, since the insulation layer is generally made of extruded polystyrene board, and multiple polystyrene boards need to be spliced together during construction, and expansion joints need to be set between the extruded polystyrene boards to form drainage channels. When laying extruded polystyrene boards, the width of the expansion joints is often difficult to control precisely, resulting in uneven drainage channel sizes in different locations. If the drainage channels in some locations are too narrow, they are prone to blockage, thus affecting drainage efficiency. Utility Model Content
[0006] To improve drainage performance, this application provides an inverted waterproof roof structure with dual drainage.
[0007] The inverted waterproof roof structure with dual drainage provided in this application adopts the following technical solution:
[0008] A double-drainage inverted waterproof roof structure, characterized in that it includes a waterproof layer and an insulation layer arranged from bottom to top, wherein the insulation layer is spliced together from several insulation boards;
[0009] It also includes a joint separating device, which includes a joint separating plate, which includes a base plate and vertical plates. Two vertical plates are provided and arranged opposite to each other. The vertical plates are located above the base plate and are fixedly connected to the base plate. The vertical plates are used to abut against the insulation board to position the insulation board.
[0010] By adopting the above technical solution, the jointing device in the inverted waterproof roof structure with double drainage can effectively position the insulation board, ensure that the gap width between the insulation boards is uniform, thereby improving the drainage efficiency of the drainage channel, reducing blockage, and thus improving the overall waterproof effect and thermal insulation performance of the roof.
[0011] Preferably, a vertical groove is provided on one side of the vertical plate, and an adjusting plate is fixed on the bottom plate. The adjusting plate slides in conjunction with the groove to realize the vertical movement of the vertical plate.
[0012] By adopting the above technical solution, a vertical groove is provided on one side of the vertical plate, and the adjustment plate fixed on the bottom plate slides in cooperation with the groove, realizing the vertical movement of the vertical plate. This facilitates the adjustment of the height of the jointing device, ensuring that the jointing device can adapt to insulation boards of different thicknesses, improving the applicability and flexibility of the jointing device, further ensuring the consistency of the width of the joints between insulation boards, and improving the reliability of the overall drainage system.
[0013] Preferably, the base plate includes two support plates, one of which has multiple locking holes along its width, and the other support plate has locking pins that engage with the locking holes.
[0014] By adopting the above technical solution, the base plate includes two support plates. One support plate has multiple locking holes along its width direction, and the other support plate has locking pins that engage with the locking holes, which facilitates quick adjustment and fixation of joint plates of different widths, improving installation efficiency and stability.
[0015] Preferably, the joint panel further includes a top panel, and the bottom panel, vertical panel and top panel are arranged in a C-shape, and two joint panels are provided and arranged opposite to each other.
[0016] By adopting the above technical solution, the joint board has added a top plate design, and the bottom plate, vertical plate and top plate are arranged in a C-shape. The two joint boards are set opposite each other, which enhances the overall stability when the insulation board is spliced, and at the same time forms a more effective drainage channel, ensuring that the water accumulated in the insulation layer can be discharged smoothly, improving drainage efficiency and the waterproof performance of the roof.
[0017] Preferably, both the vertical plate and the top plate are hollowed out.
[0018] By adopting the above technical solution, both the vertical and top panels are hollowed out, which can effectively increase the drainage area of the joints between the insulation boards, improve drainage efficiency, reduce blockage, and further ensure the waterproof performance and thermal insulation effect of the roof structure.
[0019] Preferably, the seam separating device further includes an adapter plate, which has multiple connecting parts that are detachably connected to the base plate.
[0020] By adopting the above technical solution, the joint separating device has added an adapter plate with multiple connecting parts. The connecting parts are detachably connected to the base plate, which allows the joint separating device to flexibly adjust its position and angle, improving the ease of installation and adaptability.
[0021] Preferably, the connecting part has an elongated connecting hole, and the base plate has a connector that mates with the connecting hole, and the length of the connector is less than the length of the connecting hole.
[0022] By adopting the above technical solution, the elongated connecting hole and the joint are matched, so that the jointing device can adapt to a certain tolerance range during installation, which facilitates quick assembly and adjustment on site, improves construction efficiency, and ensures connection stability.
[0023] Preferably, there are four connecting parts, which are arranged in a cross shape, and the seam panels are arranged in a square frame shape.
[0024] By adopting the above technical solution, four connecting parts are provided, and the four connecting parts are distributed in a cross shape, so that the joint panels can be arranged in a square frame, which improves the structural stability of the joint device and facilitates the formation of uniform separation joints during the splicing of insulation boards, thereby improving the drainage effect.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. The insulation board is positioned by the joint plate in the jointing device, which ensures that the width of the joint between the insulation boards is uniform and consistent, avoiding local blockage caused by uneven joint width and improving drainage efficiency.
[0027] 2. The jointing board includes a bottom plate and vertical plates. The vertical plates abut against the insulation board for positioning, effectively preventing the insulation board from shifting during the laying process, ensuring the stability of the insulation layer, and extending the service life of the roof structure.
[0028] 3. The vertical plate is equipped with a vertical sliding groove and an adjusting plate, which allows the vertical plate to move up and down. The width of the separation joint can be adjusted according to actual needs, which is highly flexible and adaptable to different construction requirements. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the joint plate in an embodiment of this application;
[0030] Figure 2 This is a structural diagram of a joint panel with a top plate;
[0031] Figure 3 This is a schematic diagram showing the connection relationship between the adapter plate and the adjustment plate;
[0032] Figure 4 This is a schematic diagram used to illustrate the joint structure.
[0033] The following labels are used in the attached diagram: 1. Joint plate; 11. Base plate; 12. Vertical plate; 13. Vertical groove; 14. Adjustment plate; 15. Top plate; 16. Clip hole; 17. Clip pin; 18. Connector; 2. Adapter plate; 21. Connecting part; 22. Connecting hole. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0035] The dual-drainage inverted waterproof roof structure provided in this application embodiment is referenced. Figure 1 The system includes a waterproof layer and an insulation layer arranged from bottom to top, with the insulation layer composed of several insulation boards spliced together. It also includes a jointing device, which comprises a jointing plate 1, consisting of a base plate 11 and vertical plates 12. The base plate 11 can be bonded to the waterproof layer for fixation. Two vertical plates 12 are provided and arranged opposite each other, positioned above and connected to the base plate 11; the vertical plates 12 abut against the edges of the insulation boards to position them, effectively controlling the width of the joints between the insulation boards and ensuring unobstructed drainage.
[0036] Specifically, the base plate 11 includes two support plates. One support plate has multiple locking holes 16 along its width, and the other support plate has locking pins 17 that engage with the locking holes 16. Through the engagement of the locking holes 16 and the locking pins 17, the joint panel 1 can be easily assembled and disassembled, and its position and width can be adjusted according to specific needs. The support plates are made of stainless steel, which has high strength and can resist corrosion under extreme weather conditions. Furthermore, the thickness of the support plates is 2 mm to ensure structural stability.
[0037] The vertical plate 12 has a vertical sliding groove 13, and an adjusting plate 14 is fixed on the base plate 11. The adjusting plate 14 slides with the sliding groove to realize the vertical movement of the vertical plate 12, thereby realizing the adjustment of the position of the vertical plate 12.
[0038] Preferred, refer to Figure 2In another embodiment of this application, the joint panel 1 further includes a top plate 15, and the bottom plate 11, vertical plates 12, and top plate 15 are arranged in a C-shape. Two joint panels 1 are provided and arranged opposite each other. The top plate 15 is also made of PE plastic, with a height of 30 mm and a thickness of 10 mm. The top plate 15 is positioned between the vertical plates 12, further enhancing the structural stability of the joint panel 1. The design of the top plate 15 makes the joint panel 1 more aesthetically pleasing and also increases its resistance to deformation. The top plate 15 is fixed to the vertical plates 12 and the bottom plate 11 with screws, making installation simple and secure.
[0039] Both the vertical panel 12 and the top panel 15 are perforated. The perforation design of both the vertical panel 12 and the top panel 15 consists of multiple elongated holes, each 5 mm wide and 20 mm long. The perforation design not only reduces the weight of the joint panel 1 but also increases its permeability, improves drainage efficiency, and ensures the drainage performance of the joints between the insulation panels.
[0040] Preferred, refer to Figure 3 and Figure 4 The joint separating device also includes an adapter plate 2, which has multiple connecting parts 21 that are detachably connected to the base plate 11. Specifically, the adapter plate 2 is made of aluminum alloy, which has good mechanical properties. Four connecting parts 21 are provided and arranged in a cross shape.
[0041] The connecting part 21 has an elongated connecting hole 22, and the base plate 11 has a connector 18 that mates with the connecting hole 22, with the length of the connector 18 being less than the length of the connecting hole 22. This design allows the joint plate 1 to be quickly connected to the adapter plate 2, improving installation efficiency. The connector 18 is 10 mm long, and the connecting hole 22 is 20 mm long. In this way, a reliable connection between the joint plate 1 and the adapter plate 2 can be ensured.
[0042] Specifically, the joint 18 on the base plate 11 is made of stainless steel and has a diameter of 6 mm. By engaging with the elongated connecting hole 22 on the adapter plate 2, a secure fixation can be achieved between the joint plate 1 and the adapter plate 2. This design not only facilitates the installation and removal of the joint plate 1 but also ensures its stability. The adapter plate 2 can be flexibly arranged according to actual needs, improving the applicability of this inverted waterproof roof structure.
[0043] The implementation principle of this embodiment is as follows: The jointing device adopts a jointing plate 1 design, which abuts against the insulation board through the vertical plate 12 to ensure that the width of the joint between the insulation boards is uniform. The jointing plate 1 includes a bottom plate 11, a vertical plate 12, and a top plate, forming a stable structure. The sliding groove between the adjusting plate 14 on the bottom plate 11 and the vertical plate 12 enables the vertical movement of the vertical plate 12, further optimizing the function of the jointing plate 1. The hollow design of the top plate and the vertical plate 12 improves drainage efficiency, and the introduction of the adapter plate 2 makes the jointing plate 1 easier to install and disassemble. The overall design not only improves the waterproof performance of the insulation layer, but also effectively extends the service life of the roof structure. Compared with the prior art, the double drainage inverted waterproof roof structure provided in this application has better waterproof effect and longer service life, and represents a significant improvement over the prior art.
[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A double-drainage inverted waterproof roof structure, characterized in that: It includes a waterproof layer and an insulation layer arranged from bottom to top, wherein the insulation layer is spliced together from several insulation boards; It also includes a joint separating device, which includes a joint separating plate (1), the joint separating plate (1) includes a bottom plate (11) and a vertical plate (12), two vertical plates (12) are provided and arranged opposite to each other, the vertical plate (12) is located above the bottom plate (11) and is fixedly connected to the bottom plate (11); the vertical plate (12) is used to abut against the insulation board to position the insulation board.
2. The inverted waterproof roof structure with dual drainage according to claim 1, characterized in that: A vertical groove (13) is provided on one side of the vertical plate (12), and an adjustment plate (14) is fixed on the bottom plate (11). The adjustment plate (14) slides with the groove to realize the vertical movement of the vertical plate (12).
3. The inverted waterproof roof structure with dual drainage according to claim 1, characterized in that: The base plate (11) includes two support plates, one of which has multiple locking holes (16) along its width direction, and the other support plate has locking pins (17) that engage with the locking holes (16).
4. The inverted waterproof roof structure with dual drainage according to claim 1, characterized in that: The joint panel (1) also includes a top plate. The bottom plate (11), the vertical plate (12) and the top plate are arranged in a C-shape. There are two joint panels (1) arranged opposite to each other.
5. The inverted waterproof roof structure with dual drainage according to claim 4, characterized in that: Both the vertical plate (12) and the top plate are hollowed out.
6. The inverted waterproof roof structure with dual drainage according to claim 1, characterized in that: The seam separating device also includes an adapter plate (2), which has multiple connecting parts (21) that are detachably connected to the base plate (11).
7. The inverted waterproof roof structure with dual drainage according to claim 6, characterized in that: The connecting part (21) is provided with an elongated connecting hole (22), and the base plate (11) is provided with a connector (18) that mates with the connecting hole (22), and the length of the connector (18) is less than the length of the connecting hole (22).
8. The inverted waterproof roof structure with dual drainage according to claim 6, characterized in that: The connecting part (21) is provided in four parts, and the four connecting parts (21) are distributed in a cross shape. The seam plate (1) is arranged in a square frame shape.
Citation Information
Patent Citations
Inversion formula roofing light and shade combines dual drainage structures
CN208702024U