Door and window lower frame structure with water baffle

By designing a door and window bottom frame structure with a water-blocking plate, and using a combination of the water-blocking plate and a fixing plate, along with a snap-fit ​​structure, the problem of water seepage at the bottom of the door and window was solved, achieving an improvement in both waterproofing and aesthetics.

CN223991709UActive Publication Date: 2026-03-13CHENGDU GUOCHUANG DOORS & WINDOWS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-08
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Existing doors and windows are prone to water seepage at the bottom. Traditional metal plate fixing methods have problems with gaps and sealant failure, leading to rainwater accumulation and leakage, and are also unsightly.

Method used

Design a door and window bottom frame structure with a water-blocking plate. Through the combination of the water-blocking plate, the fixing plate and the connecting plate, the physical structure guides the flow of rainwater. Combined with the buckle structure for fixation, it avoids the exposure of gaps and adopts screwless installation.

Benefits of technology

It effectively prevents rainwater leakage, improves waterproof reliability and aesthetics, is easy to install, reduces reliance on sealant, and enhances the quality of doors and windows.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a door and window lower frame structure with a water baffle. The door and window lower frame structure is mainly composed of a lower frame body, the water baffle arranged on the side face of the lower frame body and a blocking edge arranged on the outer side face of the lower frame body and used for blocking the upper edge of the water baffle. The lower edge of the water baffle is lower than the plane where the bottom of the lower frame body is located. The retaining side arranged on the lower frame main body can effectively shield the upper edge of the water baffle arranged on the outer side face of the lower frame main body, and a gap between the water baffle and the side face of the lower frame main body and an interface gap existing among the connecting clamping groove, the water baffle and the side face of the lower frame main body can be prevented from being exposed outside. When rainwater slides off from the outer surface of the door and window, as the edge of the retaining side is lower than the upper edge of the water baffle, the rainwater can vertically flow to the connecting plate of the water baffle under gravity and cannot cross the water baffle to enter the lower bottom of the frame of the door and window, so that the leakage of the rainwater is effectively blocked.
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Description

Technical Field

[0001] This utility model belongs to the field of building technology, specifically referring to a door and window bottom frame structure with a water-blocking plate. Background Technology

[0002] Currently, the outer windowsills of doors and windows on the market are generally plastered with cement mortar, tiled, and painted to achieve waterproofing and aesthetics. However, over time, these door and window materials are very prone to cracking at the contact point with the windowsill. This not only leads to water seepage but also poses a risk of detachment. Even with sealant for waterproofing, cracks and peeling can still occur between the wall and the sealant over time, causing rainwater to accumulate and seep into the wall cracks. Worse still, some outer windowsills are made horizontally, or even sloped downwards, failing to create a proper drainage slope, resulting in severe rainwater accumulation and seepage. To solve the above problems, the traditional approach is to fold stainless steel plates or other metal plates into "L" or "Z" shapes, insert the "L" shaped metal plate between the bottom frame profile of the door or window and the windowsill, and cover the outside of the windowsill, or place the "Z" shaped metal plate against the outside of the bottom edge of the bottom frame profile of the door or window and cover the outside of the windowsill, and fix it to the bottom frame of the door or window with screws to achieve the functions of drainage and water diversion.

[0003] However, gaps will always exist between the metal plate and the bottom frame of doors and windows, allowing rainwater to seep in slowly. Even with sealant applied to these gaps, there is still a risk of sealant failure and cracking, leading to further water leakage. Furthermore, using sealant can easily clog the drainage holes on the outside of the bottom frame, creating even greater hazards, and the exposed screws are unsightly. Therefore, given the current market situation, it is urgent to develop a bottom frame for doors and windows with a built-in water-blocking plate that effectively solves the problem of water accumulation on window sills, prevents rainwater leakage, provides long-lasting protection, and is easy to install. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model proposes a door and window bottom frame with a water baffle.

[0005] This utility model is achieved through the following technical solution: a door and window lower frame with a water baffle, mainly composed of a lower frame body, a water baffle set on the side of the lower frame body, and a baffle set on the outer side of the lower frame body to cover the upper edge of the water baffle; the lower edge of the water baffle is lower than the bottom plane of the lower frame body.

[0006] Furthermore, a connecting slot is provided on the outer side of the lower frame body, and the water baffle is fixed inside the connecting slot.

[0007] The water baffle is composed of a fixed plate, a connecting plate and a lower folding plate. The fixed plate is located on one side of the connecting plate and is connected to one end of the connecting plate, while the lower folding plate is located on the other side of the connecting plate and is connected to the other end of the connecting plate.

[0008] An angle α is formed between the plane of the fixed plate and the plane of the connecting plate, and the value of the angle α is in the range of 90°≤α≤120°.

[0009] To facilitate the assembly of the fixing plate and the connecting slot, the shape of the fixing plate matches the shape of the connecting slot.

[0010] To better realize this utility model, a top plate parallel to the bottom surface of the lower frame body is provided at the edge of the water baffle plate, and the plane of the fixing plate is parallel to the plane of the lower folding plate.

[0011] As one of the preferred embodiments of this utility model, this utility model also includes a snap-on edge and a snap-on seat disposed at the lower end of the side of the lower frame body; the upper edge of the baffle plate is fixed inside the connecting slot, the snap-on edge is provided with a snap-on head and a support end, the snap-on head is snapped into the snap-on seat, and the support end is fixedly connected to the baffle plate as a whole.

[0012] As a second preferred embodiment of this utility model, the utility model further includes a snap-fit ​​edge and a snap-fit ​​seat located at the lower end of the side of the lower frame body; the lower end of the snap-fit ​​edge is bent inward to form an arc-shaped hook, the upper edge of the baffle plate is arc-shaped and matches the hook, and the upper edge of the baffle plate is engaged with the hook; the snap-fit ​​edge is provided with a snap-fit ​​head and a support end, the snap-fit ​​head is engaged with the snap-fit ​​seat, and the support end is fixedly connected to the baffle plate as a whole.

[0013] As a third preferred embodiment of this utility model, this utility model further includes a snap-fit ​​edge, one or more protrusions disposed on the top of the connecting slot, and a snap-fit ​​seat disposed at the lower end of the side of the lower frame body; the upper edge of the baffle plate is in contact with the protrusions, the snap-fit ​​edge is provided with a snap-fit ​​head and a support end, the snap-fit ​​head is snapped into the snap-fit ​​seat, and the support end is fixedly connected to the baffle plate as a whole.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0015] 1. The baffle provided on the lower frame of this utility model effectively conceals the upper edge of the water-blocking plate on the outer side of the lower frame, preventing the gaps between the water-blocking plate and the side of the lower frame, as well as the interface gaps between the connecting groove, the water-blocking plate, and the side of the lower frame from being exposed. When rainwater slides down the outer surface of the door or window, because the edge of the baffle is lower than the upper edge of the water-blocking plate, the rainwater will flow downwards under gravity towards the connecting plate of the water-blocking plate, instead of passing over the water-blocking plate and entering the bottom of the door or window frame, thus effectively preventing rainwater leakage.

[0016] 2. This utility model ingeniously utilizes the physical structure of the edge and water-blocking plate to guide the flow of rainwater, rather than relying on chemical waterproofing methods such as sealant to achieve the purpose of waterproofing. Therefore, it can reduce the dependence on auxiliary waterproofing methods such as sealant and significantly improve the reliability of waterproofing.

[0017] 3. This utility model ingeniously utilizes a snap-fit ​​structure to fix the water baffle to the outside of the lower frame, achieving a stable connection without screws. It is not only convenient and quick to install and aesthetically pleasing, but also significantly enhances the grade of doors and windows. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the second structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the third structure of this utility model.

[0021] Figure 4 This is a schematic diagram of the fourth structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the fifth structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the sixth structure of this utility model.

[0024] Figure 7 This is a schematic diagram of the seventh structure of this utility model.

[0025] The reference numerals in the attached drawings are as follows: 1—lower frame body, 2—water baffle, 3—connecting slot, 4—top plate, 5—buckle edge, 6—protrusion, 7—buckle seat, 8—hook, 51—buckle head, 52—gap groove, 11—stop edge, 21—fixing plate, 22—connecting plate, 23—lower folding plate. Detailed Implementation

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0027] Example 1

[0028] like Figure 1 As shown in the figure, the lower frame of the door and window with a water-blocking plate described in this embodiment is mainly composed of a lower frame body 1, a water-blocking plate 2, and a retaining edge 11. The lower frame body 1 is the lower frame of the door and window. The water-blocking plate 2 is fixed to the side of the lower frame body 1 by screws or adhesive. The retaining edge 11 is set on the outer side of the lower frame body 1, and the lower edge of the retaining edge 11 is lower than the upper edge of the water-blocking plate 2, so that the retaining edge 11 can cover the upper edge of the water-blocking plate 2, preventing the gap formed between the water-blocking plate 2 and the side of the lower frame body 1 from being exposed, thereby achieving the purpose of preventing rainwater from seeping in.

[0029] The shape of the baffle 11 can be any shape, as long as it can prevent the gap formed between the water baffle 2 and the side of the lower frame body 1 from being exposed. For example, the baffle 11 can be a vertically set straight plate, or it can be an outwardly inclined plate, etc.

[0030] The water-blocking plate 2 consists of three parts: a fixing plate 21, a connecting plate 22, and a lower folding plate 23. The fixing plate 21 and the lower folding plate 23 are located on opposite sides of the connecting plate 22, with one end of the fixing plate 21 connected to one end of the connecting plate 22, and one end of the lower folding plate 23 connected to the other end of the connecting plate 22. This sequential connection of the fixing plate 21, connecting plate 22, and lower folding plate 23 forms a shape resembling a "Z". The water-blocking plate 2 is fixed to the side of the lower frame body 1 by screws or adhesive, meaning that the fixing plate 21 is fixed to the side of the lower frame body 1 by screws or adhesive.

[0031] The lower edge of the lower folding plate 23 is lower than the bottom plane of the lower frame body 1, that is, the lower edge of the water baffle 2 is lower than the bottom plane of the lower frame body 1, thereby ensuring that the water baffle 2 can cover the entire lower part of the lower frame body 1, preventing the gap between the lower frame body 1 and the outer windowsill of the lower opening of the door and window from being exposed, and further preventing external rainwater from seeping in.

[0032] To facilitate drainage, an angle α is formed between the plane of the fixing plate 21 and the plane of the connecting plate 22. The value of this angle α can be arbitrarily set according to the site conditions, and its range is generally between 90°≤α≤120°. That is, when the fixing plate 21 is connected to the vertical outer side of the lower frame body 1, it ensures that the connecting plate 22 forms a downward slope to ensure that rainwater can drain down along this slope. Of course, depending on actual needs, the value of this angle α can also be greater than 120°, as long as it effectively achieves waterproofing and facilitates installation.

[0033] To facilitate the quick and easy fixing of the baffle plate 2 to the side of the lower frame body 1, this embodiment can also provide a top plate 4 parallel to the bottom surface of the lower frame body 1 at the upper edge of the fixing plate 21, so that the fixing plate 21 is in the shape of a "7" or an inverted "L", and its specific structure is as follows. Figure 4 As shown. During connection, the top plate 4 is simply attached and fixed to the bottom surface of the lower frame body 1 by screws or adhesive.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that in this embodiment, the water baffle 2 is fixed to the side of the lower frame body 1 through a connecting slot 3. That is, a connecting slot 3 is provided on the side of the lower frame body 1, or the connecting slot 3 is formed by an inward indentation from the side of the lower frame body 1. The shape of the fixing plate 21 needs to match the shape of the connecting slot 3 to ensure that the fixing plate 21 can be inserted into or fixed inside the connecting slot 3.

[0036] The shape of the connecting slot 3 can be arbitrary, such as straight or curved. For example, when the connecting slot 3 is straight, the fixing plate 21 is also straight, and its structure is as follows: Figure 1 As shown. When the shape of the connecting slot 3 is a zigzag shape, the fixing plate 21 is also a zigzag shape, and its structure is as follows. Figure 2 As shown.

[0037] After the fixing plate 21 is inserted into the connecting slot 3, it can be further secured to the connecting slot 3 with screws, such as... Figure 1 , 3 As shown; or it can be connected and fixed by adhesive, such as Figure 2 As shown. By using the above method, the fixing plate 21 can be firmly fixed to the outer wall of the lower frame body 1.

[0038] Meanwhile, the lower edge of the baffle 11 should also be lower than the upper edge of the baffle plate 2 and the connecting slot 3, so that the baffle 11 can cover the upper edge of the baffle plate 2 and the connecting slot 3, so as to prevent the gap formed between the baffle plate 2 and the side of the lower frame body 1 and the gap formed between the baffle plate 2 and the connecting slot 3 and the side of the lower frame body 1 from being exposed, thereby achieving the purpose of preventing rainwater from seeping in.

[0039] Example 3

[0040] This embodiment is a further improvement on embodiment 2, and its structure is as follows: Figure 5 As shown, based on Embodiment 2, a snap-fit ​​edge 5 and a snap-fit ​​base 7 are added. The snap-fit ​​base 7 is fixed at the lower end of the side of the lower frame body 1. One side of the snap-fit ​​edge 5 is provided with a snap-fit ​​head 51, and the opposite side is a support end, which is fixedly connected to the connecting plate 22 of the baffle plate 2 as a whole. During connection, the upper edge of the baffle plate 2 (i.e., the upper edge of the fixing plate 21) is set inside the connecting slot 3, that is, the upper edge of the fixing plate 21 can be fixed inside the connecting slot 3 by means of insertion, snap-fit, screws or adhesive, while the snap-fit ​​head 51 of the snap-fit ​​edge 5 is fixedly connected to the snap-fit ​​base 52 by snap-fit.

[0041] After installation using the above structure, since the buckle seat 7 is integrally fixed to the lower frame body 1, and the buckle edge 5 is integrally fixed to the connecting plate 22, when the buckle head 51 of the buckle edge 5 is fastened to the buckle seat 7, the upper edge of the fixing plate 21, the fixed connection point between the buckle edge 5 and the connecting plate 22, and the fixed connection point between the buckle seat 7 and the lower frame body 1 form the three vertices of a triangle. Because triangles have strong stability, the baffle 2 in this embodiment can, under its own weight, tightly fasten the buckle head 51 of the buckle edge 5 to the buckle seat 7, thereby ensuring the stability of the entire baffle 2 after installation.

[0042] In this embodiment, the buckle seat 7 and buckle head 51 can be implemented in any shape, as long as they can achieve the purpose of fastening without separating.

[0043] Example 4

[0044] like Figure 7As shown, the difference between this embodiment and embodiment 3 is that the lower end of the baffle 11 is bent inward toward the connecting groove 3 to form an arc-shaped hook 8, and the upper edge of the baffle plate 2 (i.e., the upper end of the fixing plate 21) is arc-shaped and matches the hook 8. The upper edge of the baffle plate 2 can engage with the hook 8. At this time, the baffle plate 2 can be movably and fixedly connected to the lower end of the baffle 11. The so-called movably and fixedly connected means that after the upper edge of the baffle plate 2 (i.e., the upper edge of the fixing plate 21) is engaged with the hook 8, it can rotate with the hook 8 as the endpoint without disengaging from the baffle 11.

[0045] Example 5

[0046] This embodiment is a further improvement on embodiment 3. In embodiment 3, the fixing plate 21 of the water baffle 2 is fixedly connected inside the connecting slot 3 by means of insertion, snap-fit, screw or adhesive. In this embodiment, the fixing plate 21 is connected inside the connecting slot 3 by contact, i.e. contact connection. All other structures are the same as in embodiment 3.

[0047] A contact connection refers to a connection between two components that is merely in contact with each other without being fixed, allowing for easy separation of the two components at any time. When using a contact connection, factors such as the direction of force and the coefficient of friction between the two connected components must be considered; therefore, the overall structural design must be both rational and ingenious.

[0048] like Figure 6 As shown, in this embodiment, one or more protrusions 6 are provided at the top position of the connecting slot 3, and a number of gap grooves 52 are formed between the protrusion 6 and the side wall of the connecting slot 3 and between two adjacent protrusions 6.

[0049] When there is only one protrusion 6, a gap groove 52 is formed between the protrusion 6 and the side wall of the connecting slot 3. When the upper edge of the fixing plate 21 is located inside the connecting slot 3, it can only be located in the gap groove 52. At this time, the fixed position of the fixing plate 21 is unique and cannot be changed.

[0050] When there are two or more protrusions 6, there are two or more gap grooves 52. The installer can choose according to actual needs and set the upper edge of the fixing plate 21 in a suitable gap groove 52. At this time, the fixing position of the fixing plate 21 is flexible and variable.

[0051] To minimize the noise generated when rainwater drips onto the baffle plate 2, the baffle plate 2 in all the above embodiments can be made into one or more cavity structures, and the cavity structure is filled with foaming agent to increase its overall strength. Depending on the actual needs, the cavity structure can also be provided in any one or more of the fixed plate 21, connecting plate 22 or lower folding plate 23 in all the above embodiments.

[0052] As described above, this utility model can be implemented quite well.

Claims

1. A door and window lower frame structure with a water baffle, characterized by, It is mainly composed of a lower frame body (1), a water baffle (2) arranged on the side of the lower frame body (1), and a baffle (11) arranged on the outer side of the lower frame body (1) for shielding the upper edge of the water baffle (2); the lower edge of the water baffle (2) is lower than the plane where the bottom of the lower frame body (1) is located.

2. The door and window lower frame structure with a water baffle according to claim 1, characterized in that, A connecting clamping groove (3) is arranged on the outer side of the lower frame body (1), and the water baffle (2) is fixed inside the connecting clamping groove (3).

3. The door and window lower frame structure with a water baffle according to claim 2, characterized in that, The water baffle (2) is composed of a fixed plate (21), a connecting plate (22), and a lower folding plate (23), the fixed plate (21) is located on one side of the connecting plate (22) and connected with one end of the connecting plate (22), and the lower folding plate (23) is located on the other side of the connecting plate (22) and connected with the other end of the connecting plate (22).

4. The door and window lower frame structure with a water baffle according to claim 3, characterized in that, An included angle α is formed between the plane of the fixed plate (21) and the plane of the connecting plate (22), and the value of the included angle α is 90°≤α≤120°.

5. The door and window lower frame structure with a water baffle according to claim 3 or 4, characterized in that, The shape of the fixed plate (21) matches the shape of the connecting clamping groove (3).

6. The door and window lower frame structure with a water baffle according to any one of claims 1 to 4, characterized in that, A top plate (4) parallel to the bottom surface of the lower frame body (1) is arranged at the upper edge of the water baffle (2).

7. The door and window lower frame structure with a water baffle according to claim 3 or 4, characterized in that, The plane of the fixed plate (21) is parallel to the plane of the lower folding plate (23).

8. The door and window lower frame structure with a water baffle according to claim 2, characterized in that, It also includes a buckle edge (5) and a buckle seat (7) arranged at the lower end of the side of the lower frame body (1); the upper edge of the water baffle (2) is fixed inside the connecting clamping groove (3), the buckle edge (5) is provided with a buckle head (51) and a supporting end, the buckle head (51) is connected with the buckle seat (7), and the supporting end is fixedly connected with the water baffle (2) as a whole.

9. The door and window lower frame structure with a water baffle according to claim 1, characterized in that, It also includes a buckle edge (5) and a buckle seat (7) arranged at the lower end of the side of the lower frame body (1); the lower end of the baffle (11) is inwardly bent to form an arc-shaped hook (8), the upper edge of the water baffle (2) is arc-shaped and matches the hook (8), and the upper edge of the water baffle (2) is buckled with the hook (8); the buckle edge (5) is provided with a buckle head (51) and a supporting end, the buckle head (51) is connected with the buckle seat (7), and the supporting end is fixedly connected with the water baffle (2) as a whole.

10. The door and window lower frame structure with a water baffle according to claim 2, wherein It also includes a buckle edge (5), more than one protrusion (6) arranged on the top of the connecting clamping groove (3), and a buckle seat (7) arranged at the lower end of the side of the lower frame body (1); the upper edge of the water baffle (2) is in contact with the protrusion (6), the buckle edge (5) is provided with a buckle head (51) and a supporting end, the buckle head (51) is connected with the buckle seat (7), and the supporting end is fixedly connected with the water baffle (2) as a whole.