Fabricated building waterproof structure
By using a tight connection design between the wall panels and the base plate and a drainage system with water guide components, the problem of water seepage in prefabricated buildings is solved, the stability and waterproof performance of the buildings are improved, and maintenance costs are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山东高速舜通路桥工程有限公司
- Filing Date
- 2025-02-18
- Publication Date
- 2026-05-05
AI Technical Summary
Water leakage problems caused by uneven sealing during the assembly of prefabricated buildings affect their service life and maintenance costs.
The wall panel is designed with a groove at the bottom and a protrusion on the base plate to work together, along with a locking device and a water guide to ensure a tight connection between the wall panel and the base plate. The water guide can effectively drain rainwater by using a labyrinthine height difference locking block to engage with the wall panel.
It improves the overall stability and waterproofing performance of buildings, reduces wall damage and repair needs caused by water seepage, lowers maintenance costs, and extends the service life of buildings.
Smart Images

Figure CN224200062U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary sealing components for prefabricated buildings, and in particular to a waterproof structure for prefabricated buildings. Background Technology
[0002] Compared to traditional cast-in-place reinforced concrete and masonry buildings, prefabricated buildings are constructed by manufacturing prefabricated building components, including beams, slabs, columns, and exterior walls, in a factory. In other words, some or all of the building components are prefabricated in a factory, then transported to the construction site, and assembled using reliable connection methods. This type of building is called a prefabricated prefabricated building.
[0003] In existing prefabricated buildings, wall panels are typically joined together using cement or adhesive. When the sealant or cement is applied unevenly, gaps can easily appear during installation, leading to water seepage. Rainwater remains in these gaps for a long time and cannot drain away automatically, causing it to seep into the wall and resulting in leaks. This reduces the lifespan of the wall panels, affects the cement and sealant, causes the prefabricated exterior wall to wobble during assembly, exacerbates damage to the sealing areas, and increases maintenance costs. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a prefabricated building waterproof structure.
[0005] The technical solution of this utility model is achieved through the following scheme: a prefabricated building waterproof structure, including a base plate, a wall panel, snap-fit blocks, and a water guide component. The wall panel snaps onto the base plate. The bottom of the wall panel has a groove. A plurality of snap-fit blocks are installed in the groove. The base plate has protrusions that match the groove. An auxiliary locking device is installed in the snap-fit blocks. The control end of the auxiliary locking device is located inside the wall panel. The water guide component is snapped onto the wall panel through a labyrinthine height difference snap-fit block. The base plate abuts against the bottom surface of the water guide component.
[0006] Through the above technical solutions, the groove at the bottom of the wall panel cooperates with the protrusion on the base plate, and the auxiliary locking device in the snap-fit block ensures a tight connection between the wall panel and the base plate, increases the stability of the connection, maintains the overall stability of the building structure, and extends the service life of the wall panel. The water guide is engaged with the wall panel through a labyrinthine height difference snap-fit block, allowing rainwater and other moisture to drain smoothly along the water guide, reducing dampness and mold problems inside the wall, and maintaining the dryness and comfort of the building interior. This reduces wall damage and repair needs caused by water seepage, lowers building maintenance costs, and improves overall economic efficiency.
[0007] Preferably, the auxiliary locking device includes a pull-back spring, an adjusting block, a top holding plate, and a locking block. The adjusting block is connected to the handle through the pull-back spring. A fixing plate is movably installed between the handle and the pull-back spring. The two locking blocks symmetrically abut against the top holding plate. The top holding plate is rotatably disposed in the snap-fit block through the adjusting block. The adjusting block is slidably installed in the top holding plate.
[0008] Preferably, the pull-out spring includes a movable rod, a return spring, and a movable plate. The movable rod passes through a fixed plate and is connected to the movable plate. A return spring is fixedly installed between the fixed plate and the movable plate. The return spring covers the movable rod. The side of the movable plate away from the return spring is fixedly connected to an adjusting block.
[0009] Preferably, the fixing plate is movably installed inside the wall panel, the locking block is slidably installed inside the snap-fit block via the limiting block, and the wall panel has a through hole adapted to the handle.
[0010] Through the above technical solution, two locking blocks are held in place by a top-mounted plate, ensuring a tight connection between the wall panel groove and the base plate protrusion. This improves the overall stability of the building, preventing easy swaying even in the event of water seepage. The locking blocks are slidably installed within the snap-fit blocks via limiting blocks, ensuring stability under stress and preventing them from easily falling off or being damaged. Simultaneously, through holes adapted to the handle are provided in the wall panel, allowing installers to easily operate the handle for locking and adjustment without damaging the wall panel structure. The handle is flush with the wall panel within the through hole, avoiding obstruction of water-guiding components, preventing gaps from widening, and improving the building's waterproofing performance.
[0011] Preferably, the water guiding component includes a waterproof block, a labyrinthine height difference locking block, and an internal drainage channel. The waterproof block is engaged with the wall panel via the labyrinthine height difference locking block. The internal drainage channel is formed on the labyrinthine height difference locking block and is connected to an internal guide slope via an internal drainage outlet. A guide channel and an external guide slope are sequentially formed on the outer side of the waterproof block.
[0012] Preferably, the flow channel is located at one end of the waterproof block near the wall panel, and the flow channel is connected to the outer flow slope.
[0013] Preferably, the end of the snap-fit block is fitted with an elastic retaining strip.
[0014] Through the above technical solutions, the drainage system within the water-guiding components effectively reduces problems such as corrosion and mold caused by moisture accumulation, thereby extending the service life of the building. The design of components such as waterproof blocks and internal drainage slopes allows for timely drainage of infiltrated water, preventing long-term moisture retention within the walls and its erosion and damage to the building structure, thus improving the overall stability of the building. The extended drainage slopes on both the external and internal drainage slopes further reduce the risk of moisture seeping into the base slab and gaps in the waterproof components, helping to maintain structural integrity, reducing seepage problems caused by installation gaps, and improving the building's waterproofing performance.
[0015] In summary, this utility model has the following beneficial effects:
[0016] 1. This utility model ensures a tight connection between the wall panel and the base plate by using a groove at the bottom of the wall panel to cooperate with a protrusion on the base plate, as well as an auxiliary locking device within the locking block. This increases the stability of the connection, maintains the overall stability of the building structure, and extends the service life of the wall panel. The water guide is engaged with the wall panel through a labyrinthine height difference locking block, allowing rainwater and other moisture to drain smoothly along the water guide, reducing dampness and mold problems inside the wall and maintaining the dryness and comfort of the building interior. This reduces wall damage and repair needs caused by water seepage, lowers building maintenance costs, and improves overall economic efficiency.
[0017] 2. Two locking blocks are held in place by a top-mounted plate, ensuring a tight connection between the wall panel groove and the base plate protrusion. This improves the overall stability of the building, preventing easy wobbling even in the event of water seepage. The locking blocks are slidably installed within the snap-fit blocks via limiting blocks, ensuring stability under stress and preventing them from easily falling off or being damaged. Simultaneously, through holes adapted to the handle are provided on the wall panel, allowing installers to easily operate the handle for locking and adjustment without damaging the wall panel structure. The handle is flush with the wall panel within the through hole, avoiding obstruction of water-guiding components and preventing excessive installation gaps, thus improving the building's waterproofing performance.
[0018] 3. The drainage system within the water-guiding components effectively reduces corrosion and mold caused by moisture accumulation, thereby extending the building's service life. The design of components such as waterproof blocks and internal drainage slopes allows for timely drainage of infiltrated water, preventing long-term moisture retention within the walls and its erosion and damage to the building structure, thus improving the overall stability of the building. The extended drainage slopes on both the external and internal drainage slopes further reduce the risk of moisture seeping into the base slab and gaps in the waterproof components, helping to maintain structural integrity, reducing seepage problems caused by installation gaps, and improving the building's waterproofing performance. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the assembled structure of this utility model;
[0021] Figure 3 This is a cross-sectional structural diagram of the base plate and wall panel of this utility model;
[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the wall panel of this utility model;
[0023] Figure 5 This is a three-dimensional cross-sectional view of the water guide component of this utility model;
[0024] Figure 6 This is a schematic diagram of the assembly half-section structure of the auxiliary locking device of this utility model;
[0025] Figure 7 yes Figure 6 A schematic diagram of the internal locking block assembly structure of the auxiliary locking device.
[0026] Explanation of reference numerals in the attached diagram: 1. Base plate; 2. Wall panel; 3. Connecting block;
[0027] 4. Auxiliary locking device; 41. Handle; 42. Pull-out spring mechanism; 43. Adjusting block; 44. Top support plate; 45. Locking block; 5. Elastic retaining strip;
[0028] 6. Water guiding component; 61. Waterproof block; 62. Flow guide channel; 63. External flow guide slope; 64. Internal flow guide slope; 65. Internal drainage channel; 66. Internal drainage outlet;
[0029] 7. Limiting block; 8. Locking groove; 9. Fixing plate. Detailed Implementation
[0030] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. The present invention will be further described in detail below with reference to the accompanying drawings.
[0032] A prefabricated building waterproof structure, such as Figures 1-7As shown, the system includes a base plate 1, a wall plate 2, snap-fit blocks 3, and a water guide 6. The wall plate 2 snaps onto the base plate 1. A groove is formed at the bottom of the wall plate 2, and several arrayed snap-fit blocks 3 are installed within the groove. The base plate 1 has protrusions that match the groove. An auxiliary locking device 4 is installed within each snap-fit block 3, with its control end located within the wall plate 2. The water guide 6 snaps onto the wall plate 2 via a labyrinthine height difference snap-fit block. The base plate 1 abuts against the bottom surface of the water guide 6. An elastic locking strip 5 is installed at the end of each snap-fit block 3. The protrusions on the base plate 1 also have grooves that match multiple snap-fit blocks 3 for easy snap-fit. When the groove at the bottom of the wall plate 2 engages with the protrusions on the base plate 1, the groove... The snap-fit block 3 also fits and snaps into the protrusion block. The elastic snap-fit strip 5 is forced inward and then pops out at the end to fit and fix with the snap-fit groove at the end of the protrusion block, thus completing the locking. Then, the auxiliary locking device 4 is turned to further lock the groove and snap-fit block 3, thereby making the wall panel 2 stable on the base plate 1. The water guide 6 is in the shape of a right angle triangle. A labyrinth-style height difference snap-fit block is installed on the snap-fit surface with the wall panel 2. The long bottom surface of the water guide 6 is longer than the base plate 1, and the part protruding from the base plate 1 is bent towards the base plate 1 to facilitate water drainage and prevent rainwater from entering the gap between the bottom surface of the water guide 6 and the base plate 1. A waterproof adhesive layer is laid at the contact points between the water guide 6 and the wall panel 2 and the base plate 1.
[0033] The auxiliary locking device 4 includes a pull-back spring element 42, an adjusting block 43, a top holding plate 44, and a locking block 45. The adjusting block 43 is connected to the handle 41 via the pull-back spring element 42. A fixing plate 9 is movably installed between the handle 41 and the pull-back spring element 42. Two locking blocks 45 symmetrically abut against the top holding plate 44. The top holding plate 44 is rotatably set within the snap-fit block 3 via the adjusting block 43. The adjusting block 43 is slidably installed within the top holding plate 44. The handle 41 and the fixing plate 9 are in abutting state rather than being fixed to each other. The snap-fit block has an installation groove, which is cross-shaped. The two locking blocks 45 are slidably installed in the installation grooves of the snap-fit blocks on both sides of the top holding plate 44. The top holding plate 44 is located at the center of the cross-shaped installation groove. The top holding plate 44 is elliptical in shape, with a square groove at the center that matches the adjusting block 43. When flat, it is vertical. In the straight state, the locking block 45 is in a retracted state, which facilitates the quick-release locking. The locking block 3 at the position of the top plate 44 has a circular groove to facilitate the rotation of the top plate 44. The adjusting block 43 is square and passes through the top plate 44, thereby driving the top plate 44 to rotate. Its end abuts against the quick-release. The end of the cross mounting groove of the quick-release has a locking groove 8 that matches the adjusting block 43. The adjusting block 43 is normally located in the locking groove 8, which can effectively limit the shaking of the top plate 44 and reduce internal shaking when moving or assembling the wall panel 2. The adjusting block 43 can be dislodged from the locking groove 8 by pulling out the spring-loaded part 42 and then twisted to push the top plate 44 out of the locking block 45 for locking. Since the wall panel 2 and the base plate 1 are installed by being suspended from the top, there is no need to worry about the locking block 45 slipping out and causing locking difficulties.
[0034] The pull-out spring mechanism 42 includes a movable rod, a return spring, and a movable plate. The movable rod passes through the fixed plate 9 and is connected to the movable plate. A return spring is fixedly installed between the fixed plate 9 and the movable plate, covering the movable rod. The side of the movable plate away from the return spring is fixedly connected to the adjusting block 43. The two ends of the return spring are fixedly installed on the fixed plate 9 and the movable plate, respectively. A through hole is opened in the center of the fixed plate 9, through which the movable rod passes. The handle 41 is fixedly installed on the end of the movable rod that extends out of the fixed plate 9. The spring allows for quick rebound without the need for manual retraction, saving time and effort. One side of the movable plate is fixedly connected to the adjusting block 43, and the other side is fixedly connected to the movable rod. The locking block 45 is slidably installed in the snap-fit block 3 via the limiting block 7 to prevent the locking block 45 from slipping off during the transportation of the wall panel 2.
[0035] The fixing plate 9 is movably installed inside the wall panel 2. The fixing plate 9 can rotate inside the wall panel 2 to cooperate with the handle 41 to control the top holding plate 44. The wall panel 2 has a through hole that matches the handle 41. The handle 41 is essentially built into the surface of the wall panel 2 and is flush with the surface of the wall panel 2, so it will not obstruct the installation of the water guide 6.
[0036] Water guiding component 6 includes a waterproof block 61, a labyrinthine height difference locking block, and an internal drainage channel 65. The waterproof block 61 is engaged with the wall panel 2 via the labyrinthine height difference locking block. The internal drainage channel 65 is formed on the labyrinthine height difference locking block and is connected to the internal guide slope 64 via an internal drainage outlet 66. A guide channel 62 and an external guide slope 63 are sequentially formed on the outer side of the waterproof block 61. The internal drainage channel 65 is located at the first gap where the labyrinthine height difference locking block engages with the wall panel 2. The infiltrated water quickly enters the inner drainage channel 65 and then enters the inner guide slope 64 for discharge. The waterproof block 61 is equipped with an inner guide slope 64 with a slope of 4%, so that after water enters from the inner drainage outlet 66, it can be smoothly discharged by the other end of the inner guide slope 64. The end of the inner guide slope 64 is additionally provided with an extended guide slope to prevent it from seeping into the gap between the bottom plate 1 and the waterproof component. The waterproof component is hollow with open sides, and the open side is flush with one side of the bottom plate 1.
[0037] The drainage channel 62 is located at the end of the waterproof block 61 near the wall panel 2. The drainage channel 62 is connected to the outer drainage slope 63. Both the drainage channel 62 and the outer drainage slope 63 are located on the waterproof slope and are arranged sequentially from top to bottom. The drainage channel 62 is semi-circular, which more effectively captures and guides water, reducing the accumulation of water on the surface of the waterproof block 61 and the risk of water seepage. Water flows naturally under gravity, accelerating the drainage process.
[0038] Working principle: The worker hoists the wall panel 2 and transports it to the top of the base plate 1 for assembly. The groove on the bottom of the wall panel 2 is aligned with the protrusion of the base plate 1 for assembly. The worker then pulls and rotates the handle 41 on the surface of the wall panel 2 by 90° and releases it to allow it to spring back. At this time, the top holding plate 44 inside the snap-fit block 3 rotates and pushes out the locking blocks 45 located on both sides of the top holding plate 44, which further stabilizes the wall panel 2 and the base plate 1. At this time, the worker sprays a waterproof adhesive layer on the wall panel 2 and the base plate 1, and then aligns the groove of the wall panel 2 and inserts the water guide 6.
[0039] Rainwater is discharged by the diversion channel 62 in conjunction with the outer diversion slope 63. When rainwater seeps in, it is collected by the inner drainage channel 65 on the labyrinth-type height difference block and quickly discharged into the inner diversion slope 64 through the inner drainage outlet 66, thereby completing the inner drainage and preventing seepage.
[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A prefabricated building waterproof structure, characterized in that: The device includes a base plate (1), a wall plate (2), a snap-fit block (3), and a water guide (6). The wall plate (2) snaps onto the base plate (1). The bottom of the wall plate (2) has a groove. Several snap-fit blocks (3) are installed in the groove. The base plate (1) has a protrusion that matches the groove. An auxiliary locking device (4) is installed in the snap-fit block (3). The control end of the auxiliary locking device (4) is located inside the wall plate (2). The water guide (6) snaps onto the wall plate (2) through a labyrinth-type height difference snap-fit block. The base plate (1) abuts against the bottom surface of the water guide (6).
2. The prefabricated building waterproof structure according to claim 1, characterized in that: The auxiliary locking device (4) includes a pull-back spring (42), an adjusting block (43), a top holding plate (44), and a locking block (45). The adjusting block (43) is connected to the handle (41) through the pull-back spring (42). A fixing plate (9) is movably installed between the handle (41) and the pull-back spring (42). The two locking blocks (45) symmetrically abut against the top holding plate (44). The top holding plate (44) is rotatably set in the snap-fit block (3) through the adjusting block (43). The adjusting block (43) is slidably installed in the top holding plate (44).
3. The prefabricated building waterproof structure according to claim 2, characterized in that: The pull-out spring (42) includes a movable rod, a return spring, and a movable plate. The movable rod passes through the fixed plate (9) and is connected to the movable plate. A return spring is fixedly installed between the fixed plate (9) and the movable plate. The return spring covers the movable rod. The side of the movable plate away from the return spring is fixedly connected to the adjusting block (43).
4. The prefabricated building waterproof structure according to claim 3, characterized in that: The fixing plate (9) is movably installed inside the wall panel (2), the locking block (45) is slidably installed inside the snap-fit block (3) through the limiting block (7), and the wall panel (2) has a through hole that matches the handle (41).
5. The prefabricated building waterproof structure according to claim 1, characterized in that: The water guiding component (6) includes a waterproof block (61), a labyrinth-type height difference block, and an inner drainage channel (65). The waterproof block (61) is connected to the wall panel (2) through the labyrinth-type height difference block. The inner drainage channel (65) is opened on the labyrinth-type height difference block. The inner drainage channel (65) is connected to the inner guide slope (64) through the inner drainage outlet (66). The outer side of the waterproof block (61) is sequentially provided with a guide channel (62) and an outer guide slope (63).
6. The prefabricated building waterproof structure according to claim 5, characterized in that: The guide channel (62) is located at one end of the waterproof block (61) near the wall panel (2), and the guide channel (62) is connected to the outer guide slope (63).
7. The prefabricated building waterproof structure according to claim 1, characterized in that: The end of the snap-fit block (3) is fitted with an elastic snap-fit strip (5).