A bathroom anti-leak structure
By installing a protective sleeve on the drainage pipe and combining it with a positioning ring and a support rod, the problems of stress concentration and insufficient support in narrow spaces at the connection between the drainage pipe and the concrete are solved, achieving stronger protection and sealing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN HAIYI REAL ESTATE CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-19
AI Technical Summary
Existing bathroom waterproofing structures are prone to stress concentration and cracking at the connection between the drain pipe and the concrete, and the support rods cannot provide effective support in narrow spaces, leading to frequent leakage problems.
The system employs a protective sleeve and a drain pipe locking mechanism, with a positioning ring and a support rod providing coordinated load-bearing capacity. The bottom of the protective sleeve is fixed, while the support rod is adjustable in length to accommodate different spaces. A ring-shaped sealing ring ensures a tight seal.
It improves the overall load-bearing capacity of the drainage pipe, prevents stress concentration, ensures sealing, adapts to different installation spaces, and enhances the protective effect.
Smart Images
Figure CN224379034U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a leak-proof structure for bathrooms. Background Technology
[0002] Bathrooms are among the most frequently used and humid areas in a building. Their waterproofing and leak-proof performance directly affects the building's safety, durability, living comfort, and neighborly relations. However, bathroom leakage is a common problem in construction projects and homes, a persistent issue that has long plagued the industry and users.
[0003] The published patent document CN221276759U discloses a sunken bathroom leak-proof structure, including a bathroom structure. A drain pipe is fixedly mounted on the bottom of the inner wall of the bathroom structure, and a protective cover is slidably connected to the outer edge of the drain pipe. The inner diameter of the protective cover matches the outer diameter of the drain pipe, and the bottom of the protective cover fits snugly against the bottom of the inner wall of the bathroom structure. This solves the technical problem that during bathroom backfilling, the drain pipe cannot be properly protected and positioned, leading to the backfill colliding with the drain pipe, causing bending at the connection between the drain pipe and the bathroom's drainage pipe, and resulting in leakage due to the drain pipe tilting.
[0004] However, the above-mentioned device has the following problems: First, its overall load-bearing capacity is poor. Because the protective cover (i.e., protective sleeve) is fitted onto the drain pipe, the two are only radially limited, but not axially limited, making it impossible for them to bear the load together. Furthermore, since the support rod only supports the upper part of the protective cover and does not support the lower part of the protective cover, the lower part of the protective cover cannot provide radial support for the lower part of the drain pipe. This makes the corner between the lower part of the drain pipe and the concrete prone to stress concentration and cracking. Especially during the subsequent pouring and vibration of the second layer of concrete, the extrusion pressure of the concrete on the drain pipe in different directions may be different. Coupled with the vibration of the concrete, the corner between the drain pipe and the first layer of solidified concrete is prone to stress concentration and cracking due to vibration, resulting in leakage. Second, the support rod cannot be fully utilized in some narrow spaces. In many cases, the drain pipe in the bathroom is relatively close to the wall, making it impossible for the support rod to have enough space to extend and connect with the ground. This results in an uneven load-bearing on the protective cover, which cannot effectively protect the drain pipe. Utility Model Content
[0005] Based on this, the purpose of this utility model is to provide a bathroom anti-leakage structure, which achieves synergistic bearing and improves the overall bearing capacity of the drainage pipe by locking the protective sleeve together with the drainage pipe, provides radial bearing for the bottom of the drainage pipe by fixing the bottom of the protective sleeve relative to the pre-poured concrete, and ensures balanced bearing capacity in all circumferences of the protective sleeve by allowing the support components to be extended and adjusted to adapt to different installation positions in different spaces.
[0006] The technical solution of this utility model is as follows: A bathroom anti-leakage structure includes a drain pipe with one end pre-embedded in pre-cast concrete. A protective sleeve is provided over the drain pipe, the inner diameter of which is the same as the outer diameter of the drain pipe. Multiple support rods are evenly distributed around the outer edge of the protective sleeve. Each support rod includes a horizontal rod, a vertical rod, and a fixing seat connected vertically in sequence. The horizontal rod includes a sliding rod and a sleeve rod that are slidably fitted together. A first set screw is provided radially on the sleeve rod to lock the sliding rod relative to the sleeve rod. One end of the sleeve rod is fixed to the middle of the protective sleeve. The fixing seat is provided with bolt holes for fixing relative to the pre-cast concrete with anchor bolts. Multiple second set screws are evenly distributed radially on the protective sleeve to lock the protective sleeve relative to the drain pipe. A support disc is vertically connected to the lower end of the protective sleeve. An annular groove is provided at the lower part of the support disc. A positioning ring is pre-embedded in the pre-cast concrete corresponding to the annular groove. An annular boss with the same shape and position as the annular groove is provided on the upper part of the positioning ring to radially position the support disc.
[0007] The beneficial effects of this technical solution are as follows: During use, when pre-embedding the drainage pipe, the positioning ring is first pre-embedded in the upper part of the pre-poured concrete, ensuring that the positioning ring and the drainage pipe are coaxial. This ensures that the annular boss of the positioning ring protrudes outside the pre-poured concrete. Then, the protective sleeve is slipped off the top of the drainage pipe. Positioning of the protective sleeve is achieved through the cooperation of the annular boss and the annular groove. Simultaneously, because the cooperation of the annular groove and the annular boss allows for radial load bearing, the pressure from the post-poured concrete can be supported by the protective sleeve and unloaded onto the positioning ring. Furthermore, the positioning ring and the supporting disc provide radial load bearing for the bottom of the drainage pipe, preventing stress concentration and cracking at the junction of the bottom of the drainage pipe and the pre-poured concrete. The annular groove and the annular boss... The engagement of the shaped boss ensures that the protective sleeve and the drainage pipe are coaxial. After being pressed into place, multiple second set screws are tightened to lock the protective sleeve relative to the drainage pipe, connecting the two into one unit for coordinated load-bearing. Then, depending on space constraints, the length of each support rod's crossbar is adjusted to adapt to different installation space limitations. After adjustment, the sliding rod and sleeve rod are locked relative to each other using the first set screw. Finally, the vertical rod is fixed to the pre-poured concrete using the fixing seat and anchor bolts, so that each support rod provides radial support to the lower middle part of the protective sleeve. Since the protective sleeve is fixed relative to the drainage pipe by the second set screw, the support rod can also bear load in the vertical direction. As can be seen from the above process, the solution of this application can fix the protective sleeve and the drainage pipe into an integrated structure for joint load bearing. The protective sleeve can be connected to the pre-poured concrete through the positioning ring and the support rod, so that the force from the post-poured concrete can be directly unloaded onto the pre-poured concrete, avoiding excessive stress on the drainage pipe. The positioning ring and the support rod are set in the middle of the protective sleeve, so that the protective sleeve is not only subjected to the force at the top, but can be subjected to the force radially as a whole, making its protective ability for the drainage pipe stronger and the load bearing more even during protection. The crossbar of the support rod adopts a telescopic structure and is combined with the first locking screw, which can ensure sufficient strength and adapt to the limitations of different installation spaces, improving the applicability of the protective structure.
[0008] Based on the above solution, the machine is further modified as follows: the protective sleeve and support rod are made of metal. Metal has better load-bearing capacity, and the threads corresponding to the first and second set screws have even stronger load-bearing capacity.
[0009] Based on the above solution, the machine is further modified as follows: the sleeve rod is vertically welded and fixed to the protective sleeve.
[0010] Based on the above solution, the machine is further modified as follows: the front end of the first set screw has a pointed tip. Since the sliding rod is made of metal, using a pointed tip on the first set screw makes it less likely for the sliding rod to be punctured, while the pointed tip makes the positioning of both parts more stable.
[0011] Based on the above solution, the machine is further modified as follows: an elastic friction layer is provided at the front end of the second set screw. Since the front end of the second set screw needs to cooperate with the drain pipe, and the drain pipe is generally made of plastic with limited load-bearing capacity, the use of an elastic friction layer can, on the one hand, provide sufficient friction to ensure the reliability of the connection between the protective sleeve and the drain pipe, and on the other hand, rely on its elastic deformation to prevent the drain pipe from being squeezed and damaged by the second set screw.
[0012] Based on the above solution, the machine is further modified as follows: an annular sealing ring is provided at the interface between the annular boss and the annular groove. Since the entire protective sleeve is sealed, there is only a gap between the bottom support disc and the positioning ring. The annular sealing ring can seal this gap, ensuring a tight and waterproof connection between the entire protective sleeve and the pre-poured concrete, preventing water from the bathroom from seeping down the joint between the drain pipe and the pre-poured concrete. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the internal structure of a specific embodiment of the bathroom anti-leakage structure of this utility model;
[0014] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;
[0015] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;
[0016] Figure 4 for Figure 1 Top view;
[0017] In the diagram: 1-Pour concrete first, 2-Drainage pipe, 3-Protective sleeve, 31-Second set screw, 32-Supporting disc, 321-Annular groove, 4-Support rod, 41-Vertical rod, 42-Horizontal rod, 421-Sliding rod, 422-Sleeve rod, 423-First set screw, 43-Fixing seat, 431-Bolt hole, 5-Positioning ring, 51-Annular boss, 6-Bathroom wall, 7-Anchor bolt. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0020] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0021] The features and performance of this utility model will be further described in detail below with reference to the embodiments.
[0022] A specific embodiment of the bathroom anti-leakage structure of this utility model is as follows: Figure 1-4 As shown, the bathroom anti-leakage structure includes a drain pipe 2 with one end pre-embedded in the pre-cast concrete 1. In this application, "pre-cast concrete 1" refers to the first layer of concrete poured to fix the lower end of the drain pipe 2, which is located on the lower layer of the base slab. The drain pipe 2 is covered with a protective sleeve 3, the inner diameter of which is the same as the outer diameter of the drain pipe 2. Multiple support rods 4 are evenly distributed around the outer edge of the protective sleeve 3. In this embodiment, five support rods are provided. The support rod 4 includes a horizontal rod 42, a vertical rod 41, and a fixing seat 43 connected vertically in sequence. The horizontal rod 42 includes a sliding rod 421 and a sleeve rod 422 that are slidably sleeved on each other. A first set screw 423 is provided radially on the sleeve rod 422 to secure the sliding rod 421. The moving rod 421 is locked relative to the sleeve rod 422. One end of the sleeve rod 422 is fixed to the middle of the protective sleeve 3. The fixing seat 43 is provided with bolt holes 431 for fixing relative to the pre-cast concrete 1 by anchor bolts 7. Multiple second set screws 31 are evenly distributed radially on the protective sleeve 3 for locking the protective sleeve 3 relative to the drain pipe 2. The lower end of the protective sleeve 3 is vertically connected to a support disc 32. The lower part of the support disc 32 is provided with an annular groove 321. A positioning ring 5 is pre-embedded in the pre-cast concrete 1 corresponding to the annular groove 321. The upper part of the positioning ring 5 is provided with an annular boss 51 that is consistent with the shape and position of the annular groove 321 to radially position the support disc 32.
[0023] In this embodiment, the protective sleeve 3 and the support rod 4 are made of metal. Metal has better load-bearing capacity, and the threads corresponding to the first and second set screws have stronger load-bearing capacity. The sleeve rod 422 is vertically welded to the protective sleeve 3. The front end of the first set screw 423 has a pointed tip, such as a frustum-shaped tip. Since the sliding rod 421 is made of metal, the pointed tip of the first set screw 423 is less likely to puncture the sliding rod 421, and the pointed tip makes the positioning of both more stable. The front end of the second set screw 31 is provided with an elastic friction layer, such as an elastic rubber block. Since the front end of the second set screw 31 needs to cooperate with the drain pipe 2, and the drain pipe 2 is generally made of plastic with limited load-bearing capacity, the elastic friction layer can provide sufficient friction to ensure the reliability of the connection between the protective sleeve 3 and the drain pipe 2, and can also rely on its elastic deformation to prevent the drain pipe 2 from being squeezed and damaged by the second set screw 31. An annular sealing ring is provided at the interface between the annular boss 51 and the annular groove 321. Since the protective sleeve 3 is completely sealed, there is only a gap between the bottom support disc 32 and the positioning ring 5. After setting the annular sealing ring here, this gap can be sealed, ensuring that the protective sleeve 3 is tightly connected to the pre-cast concrete 1 and is waterproof, preventing water from the bathroom from seeping down along the joint between the drain pipe 2 and the pre-cast concrete 1.
[0024] In use, when pre-embedding the drainage pipe 2, the positioning ring 5 is first pre-embedded in the upper part of the pre-poured concrete 1, and the positioning ring 5 is made coaxial with the drainage pipe 2, ensuring that the annular boss 51 of the positioning ring 5 protrudes outside the pre-poured concrete 1. Then, the protective sleeve 3 is put on the upper part of the drainage pipe 2. The positioning of the protective sleeve 3 is achieved by the cooperation of the annular boss 51 and the annular groove 321. At the same time, since the cooperation of the annular groove 321 and the annular boss 51 can achieve radial bearing, the pressure from the post-poured concrete can be supported by the protective sleeve 3 and unloaded onto the positioning ring 5. The positioning ring 5 and the supporting disc 32 can provide radial bearing for the bottom of the drainage pipe 2, preventing stress concentration and cracking at the junction of the bottom of the drainage pipe 2 and the pre-poured concrete 1. The annular groove 321 and the annular boss 51 The mechanism also ensures that the protective sleeve 3 and the drain pipe 2 are coaxial. After being pressed down into place, the protective sleeve 3 is locked relative to the drain pipe 2 by tightening multiple second set screws 31, connecting the two into one unit for joint load bearing. Then, according to space constraints, the length of the horizontal bar 42 of each support rod 4 is adjusted to adapt to different installation space constraints. After adjustment, the sliding rod 421 and the sleeve rod 422 are locked relative to each other by the first set screw 423. Finally, the vertical rod 41 is fixed to the pre-poured concrete 1 by the fixing seat 43 and the anchor bolt 7, so that each support rod 4 provides radial support to the lower middle part of the protective sleeve 3. Since the protective sleeve 3 is fixed relative to the drain pipe 2 by the second set screw 31, the support rod 4 can also bear load in the vertical direction at this time. As can be seen from the above process, the solution of this application can fix the protective sleeve 3 and the drainage pipe 2 into an integrated structure for joint load bearing. The protective sleeve 3 can be connected to the pre-poured concrete 1 through the positioning ring 5 and the support rod 4 respectively, so that the force from the post-poured concrete can be directly unloaded onto the pre-poured concrete 1, avoiding excessive stress on the drainage pipe 2. The positioning ring 5 and the support rod 4 are set in the middle of the protective sleeve 3, so that the protective sleeve 3 is not only subjected to the top force, but the whole can be subjected to radial force, making its protective ability for the drainage pipe 2 stronger and the load bearing force more even during protection. The crossbar 42 of the support rod 4 adopts a telescopic structure and is equipped with the first locking screw, which can ensure sufficient strength and adapt to the limitations of different installation spaces, improving the applicability of the protective structure.
[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.
Claims
1. A bathroom leak-proof structure, comprising a drain pipe with one end pre-embedded in pre-cast concrete, a protective sleeve fitted over the drain pipe, the inner diameter of the protective sleeve being the same as the outer diameter of the drain pipe, and a plurality of support rods evenly distributed circumferentially along the outer edge of the protective sleeve, characterized in that, The support rod includes a horizontal bar, a vertical bar, and a fixed seat connected vertically in sequence. The horizontal bar includes a sliding rod and a sleeve rod that slide together. A first set screw is provided radially on the sleeve rod to lock the sliding rod relative to the sleeve rod. One end of the sleeve rod is fixed to the middle of the protective sleeve. The fixed seat has bolt holes for fixing relative to the pre-poured concrete with anchor bolts. Multiple second set screws are evenly distributed radially on the protective sleeve to lock the protective sleeve relative to the drain pipe. A support disc is vertically connected to the lower end of the protective sleeve. The lower part of the support disc has an annular groove. A positioning ring is pre-embedded in the pre-poured concrete corresponding to the annular groove. The upper part of the positioning ring has an annular boss with the same shape and position as the annular groove to radially position the support disc.
2. The anti-leak structure for a bathroom according to claim 1, wherein The protective sleeve and support rod are made of metal.
3. The anti-leak structure for a bathroom according to claim 2, wherein The sleeve rod is welded and fixed perpendicularly to the protective sleeve.
4. The anti-leak structure for a bathroom according to claim 1, wherein The first set screw has a pointed tip at its front end.
5. The anti-leak structure for a bathroom according to claim 1, wherein The front end of the second set screw is provided with an elastic friction layer.
6. The anti-leak structure for a bathroom according to claim 1, wherein An annular sealing ring is provided at the interface between the annular boss and the annular groove.