House deformation joint leakproof structure
By using flexible rubber connecting strips and an inverted conical water receiving frame and drainage pipe design, the problem of drainage components being damaged due to joint deformation in existing technologies is solved, achieving leak-proof and quiet operation of building expansion joints and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LONGTU INTELLIGENT MANUFACTURING CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-05
AI Technical Summary
When the expansion joint of an existing building is subjected to external force, the drainage components cannot deform synchronously, which can lead to damage or detachment of the components due to pressure, affecting continuous and stable operation.
A flexible rubber connecting strip connects the water guide plate and the water receiving frame, allowing both to move freely when the seam deforms. The inverted conical water receiving frame works in conjunction with the drain pipe to achieve rapid water diversion. The rubber connecting strip covers the opening of the water receiving frame to prevent leakage. The water guide plate is reinforced by sound insulation pads and horizontal positioning posts.
It ensures that leakage can still be effectively blocked when the joint is deformed, reducing the risk of rainwater infiltration, reducing water flow noise, extending service life, and balancing deformation adaptability and quiet operation.
Smart Images
Figure CN224325901U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of expansion joint technology, and in particular to a leak-proof structure for building expansion joints. Background Technology
[0002] Expansion joints are structural gaps pre-installed in buildings to prevent additional stress or damage caused by external factors (such as temperature changes, foundation settlement, or earthquakes). Their core function is to artificially break up the continuous structure of a building, forming independent deformation units, thereby effectively releasing or adapting to deformation effects caused by different reasons.
[0003] Currently, a Chinese patent discloses a waterproof structure for building expansion joints (authorization announcement number CN219033592U). In this embodiment, a drainage component is also provided, which includes a water collection component and a drainage pipe. The water collection component is fixedly installed in the structural beam directly below the waterstop. In this way, when rainwater seeps down from the gap between the waterstop and the structural beam, it will flow directly into the water collection component and be discharged through the drainage pipe, thereby preventing rainwater from seeping down along the beam.
[0004] The current drainage device is fixed inside the expansion joint using a rigid connection method. Although it can achieve rapid drainage, the drainage components cannot deform synchronously with the expansion joint. When the joint is displaced by external forces, the components may be damaged by pressure or detach from the joint, thus affecting the continuous and stable operation of the drainage components. Utility Model Content
[0005] Therefore, it is necessary to provide a new type of leak-proof structure for building expansion joints, addressing the problems of existing leak-proof structures affecting the normal operation of expansion joints and having poor practicality.
[0006] A leak-proof structure for building expansion joints, comprising:
[0007] The quantity is two installation strips;
[0008] A water receiving frame, which is fixedly connected to one end of one of the mounting strips facing the other mounting strip;
[0009] A drain pipe, which is fixedly connected to and communicates with the bottom of the water receiving frame;
[0010] A water guide plate is fixedly connected to one end of another mounting strip facing one of the mounting strips, and the water guide plate is inclined and positioned directly above the water receiving frame.
[0011] In one embodiment, a rubber connecting strip is fixedly connected to the bottom of the water guide plate, and the bottom of the rubber connecting strip is fixedly connected to the top of the water receiving frame.
[0012] In one embodiment, the vertical cross-sectional shape of the rubber connecting strip is L-shaped, and the bottom of the rubber connecting strip covers the partial top opening at the lowest point of the water guide plate behind the water receiving frame.
[0013] In one embodiment, the cross-sectional shape of the bottom wall of the water receiving frame is an inverted cone, and the drain pipe is connected to the lowest point of the bottom wall of the water receiving frame.
[0014] In one embodiment, the water guide plate is recessed inward toward one end of one of the mounting strips to form a groove.
[0015] In one embodiment, a sound-insulating pad is adhered to the inner side of the groove, and the sound-insulating pad is a rubber material component.
[0016] In one embodiment, a horizontal positioning post is fixedly connected to one end of the water guide plate facing away from one of the mounting strips, and the number of the horizontal positioning posts is not less than ten.
[0017] Beneficial effects
[0018] The aforementioned building expansion joint waterproofing structure uses rubber connecting strips to flexibly connect the water guide plate and the water receiving frame, allowing both to move freely during joint deformation without affecting drainage. Sound insulation pads reduce water flow noise, and horizontal positioning columns reinforce the water guide plate, extending its service life. The overall structure balances deformation adaptability with quiet operation.
[0019] Through the combination of the water receiving frame, water guide plate and drain pipe, the leaking water can be quickly guided into the drainage system. The water guide plate guides the water to the water receiving frame, and the water in the receiving frame is gathered into the drain pipe through the inverted conical inner bottom wall. The L-shaped design of the rubber connecting strip covers the opening of the water receiving frame. The flexible connection ensures that leakage is still effectively blocked when deformed, which significantly reduces the risk of rainwater infiltration. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model installed inside the expansion joint;
[0023] Figure 3 This is a cross-sectional view of the overall structure of this utility model;
[0024] Figure 4 This is an exploded view of a partial structure of this utility model.
[0025] Figure label:
[0026] 100. Installation strip; 200. Water receiving frame; 300. Drain pipe; 400. Water guide plate; 410. Groove; 500. Rubber connecting strip; 600. Sound insulation pad; 700. Horizontal positioning post. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0032] The following is combined with Figures 1-4 This invention describes a leak-proof structure for building expansion joints.
[0033] In one embodiment, a leak-proof structure for building expansion joints includes:
[0034] The quantity is two mounting strips, 100;
[0035] A water receiving frame 200 is fixedly connected to one end of one mounting strip 100 facing the other mounting strip 100;
[0036] Drain pipe 300 is fixedly connected to and connected to the bottom of water receiving frame 200;
[0037] A water guide plate 400 is fixedly connected to one end of another mounting strip 100 facing one of the mounting strips 100. The water guide plate 400 is inclined and positioned directly above the water receiving frame 200.
[0038] A rubber connecting strip 500 is fixedly connected to the bottom of the water guide plate 400. The bottom of the rubber connecting strip 500 is fixedly connected to the top of the water receiving frame 200. The vertical cross-sectional shape of the rubber connecting strip 500 is L-shaped. The bottom of the rubber connecting strip 500 covers the partial top opening at the lowest point of the water receiving frame 200 away from the water guide plate 400. The rubber connecting strip 500 can establish a flexible guiding path when the relative position of the water guide plate 400 and the water receiving frame 200 changes, so as to reduce the probability of water leaking downward from the gap between the water guide plate 400 and the water receiving frame 200.
[0039] The cross-sectional shape of the inner bottom wall of the water receiving frame 200 is an inverted cone shape, and the drain pipe 300 is connected to the lowest point of the inner bottom wall of the water receiving frame 200, which can reduce the water retention rate inside the water receiving frame 200.
[0040] The water guide plate 400 is recessed inward at one end facing one of the mounting strips 100 to form a groove 410, which can concentrate and guide the water passing through the water guide plate 400 to reduce the probability of water sliding out of the water guide plate 400 laterally during the sliding process.
[0041] A sound insulation pad 600 is bonded to the inside of the groove 410. The sound insulation pad 600 is a rubber material component, which can effectively reduce the noise of water falling on the water guide plate 400, so as to reduce noise interference to the interior of the building.
[0042] A horizontal positioning post 700 is fixedly connected to one end of the water guide plate 400 facing away from one of the mounting strips 100. The number of horizontal positioning posts 700 is not less than ten. This can more stably support the water guide plate 400 and extend the effective service life of the water guide plate 400.
[0043] Working principle: When a localized break occurs between the gap and the rubber waterstop, causing water seepage, the water-receiving frame 200 or the water-guiding plate 400 located directly below will catch the leaking water. The water-receiving frame 200 can directly guide the water into the drain pipe 300, or the water-guiding plate 400 can guide the water to the water-receiving frame 200, and then the water-receiving frame 200 can guide the water into the drain pipe 300, which finally drains the water to a designated location, thereby effectively reducing the seepage of rainwater along the beam.
[0044] When the joint deforms, the joint will move the water receiving frame 200 or the water guide plate 400 via the installation strip 100. Since the water receiving frame 200 and the water guide plate 400 are flexibly connected by a rubber connecting strip 500, the two can freely adjust their relative positions while maintaining normal drainage function, ensuring that the building expansion joint waterproof structure can adapt to the deformation of the joint and operate stably.
[0045] It should be noted that the common horizontal expansion joint structure in buildings is as follows:
[0046] Joint Disconnection Treatment: Vertical disconnection gaps are set in horizontal components such as floor slabs and beams along the length of the building, allowing the structures on both sides to expand and contract freely in the horizontal direction. Two installation strips 100 are fixedly connected to the vertical inner wall of the gap by expansion bolts or chemical bolts.
[0047] Elastic sealant: The gaps are filled with elastic waterproof materials such as hemp fiber asphalt, foam plastic strips or grease to adapt to deformation and prevent foreign objects from entering; a rubber waterstop is built in and set above the installation strip 100 to form a double waterproof barrier; an inflatable rubber airbag is used for auxiliary sealing, and anti-fall-off blocks are set on both sides of the airbag and embedded in the concrete groove.
[0048] Movable cover system: Surface covering: Use metal (such as galvanized iron sheet), concrete or rubber and plastic movable cover to cover the joint and fix it to one side, allowing the other side to slide freely. Rubber sealing strips are pasted at the joint between the cover and the base layer to enhance the airtightness.
[0049] Decorative treatment: For interior parts, decorative covers made of aluminum alloy, stainless steel, etc. are often used in conjunction with the decoration to balance functionality and aesthetics.
[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0051] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A leak-proof structure for building expansion joints, characterized in that, include: The quantity is two mounting strips (100); A water receiving frame (200) is fixedly connected to one end of one of the mounting strips (100) facing the other mounting strip (100); A drain pipe (300) is fixedly connected to and communicates with the bottom of the water receiving frame (200); A water guide plate (400) is fixedly connected to one end of another mounting strip (100) facing one of the mounting strips (100), and the water guide plate (400) is inclinedly arranged directly above the water receiving frame (200).
2. The leak-proof structure for building expansion joints according to claim 1, characterized in that, A rubber connecting strip (500) is fixedly connected to the bottom of the water guide plate (400), and the bottom of the rubber connecting strip (500) is fixedly connected to the top of the water receiving frame (200).
3. The leak-proof structure for building expansion joints according to claim 2, characterized in that, The vertical cross-sectional shape of the rubber connecting strip (500) is L-shaped, and the bottom of the rubber connecting strip (500) covers the partial top opening at the lowest point of the water receiving frame (200) and the water guide plate (400).
4. The leak-proof structure for building expansion joints according to claim 1, characterized in that, The cross-sectional shape of the bottom wall of the water receiving frame (200) is an inverted cone, and the drain pipe (300) is connected to the lowest point of the bottom wall of the water receiving frame (200).
5. The leak-proof structure for building expansion joints according to claim 1, characterized in that, The water guide plate (400) is recessed inward at one end toward one of the mounting strips (100) to form a groove (410).
6. The leak-proof structure for building expansion joints according to claim 5, characterized in that, A sound-insulating pad (600) is bonded to the inner side of the groove (410), and the sound-insulating pad (600) is a rubber material component.
7. The leak-proof structure for building expansion joints according to claim 1, characterized in that, The water guide plate (400) is fixedly connected to a horizontal positioning post (700) at one end facing away from one of the mounting strips (100), and the number of the horizontal positioning posts (700) is not less than ten.