Precast concrete coping construction structure for outer wall sill
By using a precast concrete capping construction structure, and utilizing inclined sections, sealant, and self-adhesive rubber waterstops, combined with a window frame tightening device, the problems of rainwater leakage at the exterior wall window sill and poor window frame contact were solved, thereby improving sealing performance and construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-07
AI Technical Summary
In existing technologies, rainwater leakage is prone to occur at the window sills of exterior walls, and the window frame does not make a tight seal with the vertical part, which affects construction safety and quality.
The construction structure uses precast concrete capping, including precast window sills, window frames, and window openings. It utilizes inclined sections, sealant, and self-adhesive rubber waterstops, combined with window frame tightening devices, to ensure tight contact between the window frame and the vertical parts, thereby increasing sealing performance.
It effectively prevents rainwater leakage, reduces construction time, improves construction safety and quality, simplifies construction procedures, and enhances the sealing performance of window frames and vertical parts.
Smart Images
Figure CN224469015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction technology, specifically to a precast concrete capping structure for exterior wall window sills. Background Technology
[0002] After frame and shear wall structures are put into use, rainwater leakage frequently occurs at the window sills of exterior walls, affecting the functionality for residents. To reduce the risk of leakage at these areas, eliminate potential quality issues, and improve the overall quality of the concrete structure, a precast concrete coping method for exterior window sills is currently being adopted. This method facilitates installation, reduces construction steps, shortens the construction period, effectively prevents rainwater leakage at the window sills, and ensures the quality of the concrete coping.
[0003] Existing patent CN203613939U, "Integrated Window Sill," discloses a window sill with a downward-sloping left end, a horizontal middle section, a protrusion on the right end, a fixing block at the bottom, and a groove at the lower left end. The window sill also includes a water-blocking plate, detachably connected to the window sill. The bottom surface of the water-blocking plate mates with the downward-sloping left end of the window sill. The left end of the water-blocking plate has a hook-back end cap structure with a protrusion that fits into the groove. The angle between the downward-sloping surface 1 and the horizontal line is 15°. The window sill is made of PVC plastic steel material.
[0004] The technical problems include: when installing the window frame, the protrusion needs to be in close contact with the window frame, but because the protrusion is located on the inside of the window, it is inconvenient to use tools, and it is impossible to ensure that the window frame is in contact with the vertical part. If the contact is not tight, there will be problems such as leakage, and it is also not conducive to construction safety. Utility Model Content
[0005] The purpose of this utility model is to provide a construction structure for a precast concrete capping of an exterior wall window sill.
[0006] This utility model is implemented by the following technical solution: a precast concrete capping construction structure for exterior wall window sills, which includes a precast window sill plate, a window frame, and a window. At least one precast window sill plate is fixed to the end face of the bottom wall of the window through a mortar layer. The precast window sill plate includes an integrally formed horizontal part, a vertical part, and an inclined part. The horizontal part is set on the side closer to the interior, and the inclined part is set on the side closer to the exterior.
[0007] The bottom end of the window frame is fixedly connected to the top end face of the horizontal part through a flexible component;
[0008] The window frame abuts against the vertical part on the outdoor side of the window wall, and the connection between the window frame and the inclined part is filled with sealant.
[0009] Furthermore, the horizontal part is detachably connected to a window frame clamping device, and the clamping plate of the window frame clamping device is in contact with the window wall on the indoor side of the window frame.
[0010] Furthermore, the window frame clamping device includes a first threaded sleeve, a first screw, a second threaded sleeve, a second screw, and a clamping plate. The first threaded sleeve is pre-embedded vertically in the horizontal part. The first screw is screwed into the first threaded sleeve. The second threaded sleeve is fixed to the top of the first screw. The second screw is screwed into the second threaded sleeve. The clamping plate is rotatably connected to the end of the second screw near the window frame.
[0011] Furthermore, the flexible component is a self-adhesive rubber waterstop strip.
[0012] Furthermore, the bottom end face of the prefabricated window sill is provided with a water-blocking groove on the outdoor side, and the water-blocking groove is arranged along the length direction of the prefabricated window sill.
[0013] Furthermore, the inclination of the inclined portion is 4-6%.
[0014] Furthermore, angle steel is pre-embedded at both ends of the horizontal section, and adjacent prefabricated window sills are fixed together by welding the angle steel.
[0015] Furthermore, steel plates matching the angle steel are pre-embedded in the walls on both sides of the window, and the steel plates are welded to the angle steel of the adjacent prefabricated window sill.
[0016] Advantages of this utility model:
[0017] Precast concrete capping saves construction time. On-site pouring is not required. Only steel plates matching the angle steel need to be pre-embedded in the walls on both sides of the window and welded to the angle steel of the precast concrete capping. The precast concrete capping can then be fixed at the window. The operation is simple and convenient.
[0018] The use of inclined sections, sealant, vertical sections, and self-adhesive rubber waterstop strips effectively prevents rainwater leakage. Rainwater drips downwards under the action of the inclined sections, while the vertical sections ensure a tight contact between the window frame and the vertical sections, which also helps to position the window frame. With the cooperation of the window frame tightening device, the tight contact between the window frame and the vertical section is ensured, which increases the sealing performance, reduces leakage problems, and facilitates the installation of the window frame.
[0019] Installing self-adhesive rubber waterstops at the contact point between the window frame and the window sill can both increase the water-stopping effect and resist deformation. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a test drawing of the construction structure of this utility model;
[0022] Figure 2 for Figure 1 A magnified view of part A in the diagram;
[0023] Figure 3 This is a structural diagram of the prefabricated window sill of this utility model;
[0024] Figure 4 This is the main view of the construction structure of this utility model;
[0025] In the diagram: 1. Precast window sill; 2. Window frame; 3. Window window; 4. Mortar layer; 5. Horizontal section; 6. Vertical section; 7. Inclined section; 8. Flexible component; 9. Sealant; 10. Window frame clamping device; 11. First threaded sleeve; 12. First screw; 13. Second threaded sleeve; 14. Second screw; 15. Pressure plate; 16. Self-adhesive rubber waterstop strip; 17. Water-blocking groove; 18. Angle steel; 19. Steel plate. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] like Figure 1-4 As shown, the precast concrete capping construction structure for exterior wall window sills includes a precast window sill 1, a window frame 2, and a window 3. At least one precast window sill 1 is fixed to the end face of the bottom wall of the window 3 through a mortar layer 4. The precast window sill 1 is characterized in that it includes an integrally formed horizontal part 5, a vertical part 6, and an inclined part 7. The horizontal part 5 is set on the side closer to the interior, and the inclined part 7 is set on the side closer to the exterior.
[0028] The bottom end of the window frame 2 is fixedly connected to the top end face of the horizontal part 5 through the flexible part 8;
[0029] The window frame 2, on the side closest to the outside, abuts against the vertical part 6, and the connection between the window frame 2, on the side closest to the outside, and the inclined part 7 is filled with sealant 9.
[0030] The horizontal part 5 is detachably connected to a window frame clamping device 10, and the clamping plate 15 of the window frame clamping device 10 is in contact with the window wall on the indoor side of the window frame 2.
[0031] The window frame clamping device 10 includes a first threaded sleeve 11, a first screw 12, a second threaded sleeve 13, a second screw 14, and a clamping plate 15. The first threaded sleeve 11 is pre-embedded in the horizontal part 5. The first screw 12 is screwed into the first threaded sleeve 11. The second threaded sleeve 13 is fixed to the top of the first screw 12. The second screw 14 is screwed into the second threaded sleeve 13. The clamping plate 15 is rotatably connected to the end of the second screw 14 near the window frame 2.
[0032] The inclined part 7, sealant 9, vertical part 6, and self-adhesive rubber waterstop strip 16 effectively prevent rainwater leakage. Rainwater drips downwards under the action of the inclined part 7, while the vertical part 6 ensures that the window frame 2 is in close contact with the vertical part 6, which in turn assists in positioning the window frame 2. With the cooperation of the window frame tightening device 10, the window frame 2 is ensured to be in close contact with the vertical part 6, which increases the sealing performance and reduces leakage problems.
[0033] Furthermore, the flexible component 8 is a self-adhesive rubber waterstop strip 16.
[0034] Furthermore, a water-blocking groove 17 is provided on the bottom end face of the precast window sill 1 facing outdoors, and the water-blocking groove 17 is provided along the length direction of the precast window sill 1.
[0035] Furthermore, the inclination of the inclined portion 7 is 4-6%.
[0036] Furthermore, angle steel 18 is pre-embedded at both ends of the horizontal section 5, and adjacent prefabricated window sills 1 are fixed together by welding the angle steel 18.
[0037] Furthermore, steel plates 19 matching angle steel 18 are pre-embedded in the walls on both sides of window 8, and the steel plates 19 are welded to the angle steel 18 of the adjacent prefabricated window sill 1.
[0038] A self-adhesive rubber waterstop strip 16 is installed at the contact point between the window frame 2 and the window sill, which can both increase the water-stopping effect and resist deformation.
[0039] The specific operation process of this embodiment is as follows:
[0040] Before construction, a large number of prefabricated window sills were produced in the factory and transported to the construction site.
[0041] During construction, at least one prefabricated window sill 1 is fixed to the end face of the bottom wall of window 3 through mortar layer 4. For example, three prefabricated window sill 1s need to be set for one window 3. The two adjacent prefabricated window sill 1s are welded and fixed together by angle steel 18. Steel plates 19 are embedded in the walls on both sides of window 3. The prefabricated window sill 1s are connected to the prefabricated steel plates 19 in the wall through the angle steel 18 of the prefabricated window sill 1, so that the wall of window 3 and the prefabricated window sill 1 form an integral structure.
[0042] Then, a window frame 2 is installed on the horizontal part 5 of the precast window sill 1. A self-adhesive rubber waterstop strip 16 is installed between the window 3 and the precast window sill 1. The window frame 2 is adjusted to a suitable height. Then, the first screw 12 is connected to the first threaded sleeve 11 using the window frame clamping device 10. Then, the second screw 14 is connected in the second threaded sleeve 13. The second screw 14 is rotated so that the clamping plate 15 contacts the window frame 2. Under the action of the clamping plate 15, the outer wall of the window frame 2 abuts against the vertical part 6, so that the vertical part 6 and the window frame 2 can be in close contact. Then, the window frame 2 and the walls on both sides of the window 3 are fixed. The operation is convenient and the construction is easy.
[0043] After the window frame 2 is fixed, the first screw 12 is removed from the first threaded sleeve 11.
[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A precast concrete capping structure for exterior wall window sills, comprising a precast window sill, a window frame, and a window, wherein at least one of the precast window sills is fixed to the end face of the wall at the bottom of the window through a mortar layer, characterized in that, The prefabricated window sill includes an integrally formed horizontal part, a vertical part, and an inclined part. The horizontal part is located on the side closer to the interior, and the inclined part is located on the side closer to the exterior. The bottom end of the window frame is fixedly connected to the top end face of the horizontal part through a flexible component; The window frame abuts against the vertical part on the outdoor side of the window wall, and the connection between the window frame and the inclined part is filled with sealant.
2. The precast concrete coping structure for exterior wall window sills according to claim 1, characterized in that, The horizontal section is detachably connected to a window frame clamping device, and the clamping plate of the window frame clamping device is in contact with the window wall on the indoor side of the window frame.
3. The precast concrete coping structure for exterior wall window sills according to claim 2, characterized in that, The window frame clamping device includes a first threaded sleeve, a first screw, a second threaded sleeve, a second screw, and a clamping plate. The first threaded sleeve is pre-embedded vertically in the horizontal part. The first screw is screwed into the first threaded sleeve. The second threaded sleeve is fixed to the top of the first screw. The second screw is screwed into the second threaded sleeve. The clamping plate is rotatably connected to the end of the second screw near the window frame.
4. The precast concrete coping structure for exterior wall window sills according to claim 1, characterized in that, The flexible component is a self-adhesive rubber waterstop strip.
5. The precast concrete coping structure for exterior wall window sills according to claim 1, characterized in that, The bottom end face of the prefabricated window sill is provided with a water-blocking groove on the outdoor side, and the water-blocking groove is arranged along the length direction of the prefabricated window sill.
6. The precast concrete coping structure for exterior wall window sills according to claim 1, characterized in that, The inclination of the inclined portion is 4-6%.
7. The precast concrete coping structure for exterior wall window sills according to any one of claims 1-6, characterized in that, Angle steel is pre-embedded at both ends of the horizontal section, and adjacent prefabricated window sills are fixed together by welding the angle steel.
8. The precast concrete coping structure for exterior wall window sills according to claim 7, characterized in that, The walls on both sides of the window are pre-embedded with steel plates that match the angle steel, and the steel plates are welded to the angle steel of the adjacent prefabricated window sill.