Window frame capable of preventing rainwater from flowing backwards and casement window

Abstract

The utility model discloses a rainwater backflow prevention window frame and a casement window, the rainwater backflow prevention window frame comprises a lower frame, the outdoor side of the lower frame is connected with an extension plate, the extension plate is provided with a drain hole, and the outdoor side of the extension plate is connected with an outer baffle extending upwards; the outdoor side of the auxiliary frame abuts against the top side of the outer baffle, the indoor side of the auxiliary frame abuts against the top side of the lower frame, a water storage cavity is defined between the auxiliary frame and the lower frame, an upper through hole is formed in the position, close to the outdoor side, of the top side of the auxiliary frame, and a lower through hole is formed in the position, close to the outdoor side, of the bottom side of the auxiliary frame. According to the side-hung window, the water storage cavity is defined by the auxiliary frame and the lower frame, the settable space of the water storage cavity is enlarged, and therefore the water storage amount is increased, the situation that rainwater flows backwards and easily seeps into a room is effectively prevented, and the use experience of the side-hung window is improved.

Description

Technical Field

[0001] This utility model relates to a door and window, and more particularly to a window frame and casement window that prevents rainwater from flowing back into the window. Background Technology

[0002] In casement windows, when the outdoor wind pressure is high, it forces the glass of the casement window sash inwards. At this time, rainwater from outside can seep into the window sash through the gaps between the glass and the window frame, accumulating inside. To drain this infiltrated rainwater, current systems have drainage holes at the bottom of the window sash and connecting holes at the top of the subframe at the bottom of the window frame. A drain hole is located on the exterior side of the subframe, near the outside. Rainwater inside the window sash flows out through the drainage holes, then enters the subframe through the connecting holes at the top of the subframe, and finally flows out through the drain hole. However, because the internal space of the subframe is small, the amount of water it can store is limited. When a large amount of rainwater enters the window sash, the water in the subframe cannot drain in time, causing rainwater to overflow into the room and soak the interior walls. Therefore, there is an urgent need for a window frame that can better prevent large amounts of rainwater from flowing back into the room. Utility Model Content

[0003] The purpose of this utility model is to provide a window frame and casement window that prevents rainwater from flowing back into the window, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A rainwater backflow prevention window frame includes: a lower frame with an outer extension plate connected to its outdoor side, the outer extension plate having drainage holes, and an upwardly extending outer baffle connected to the outdoor side of the outer extension plate; a sub-frame with its outdoor side abutting against the top side of the outer baffle, the indoor side of the sub-frame abutting against the top side of the lower frame, a water storage cavity formed between the sub-frame and the lower frame, an upper through hole provided on the top side of the sub-frame near the outdoor side, and a lower through hole provided on the bottom side of the sub-frame near the outdoor side.

[0006] This technical solution has at least the following beneficial effects: After the sub-frame is installed on the top side of the lower frame, a water storage cavity is formed between the sub-frame and the lower frame. Because the area covered between the sub-frame and the lower frame along the indoor-outdoor direction is large, the internal space of the formed water storage cavity is large. At the outdoor side of the lower frame, the outer extension plate and the outer baffle form a right-angled protrusion structure, allowing rainwater to be directly discharged outwards from the drainage holes on the outer extension plate. The external window sash is installed above the sub-frame. When water enters the window sash due to high wind pressure, it is discharged directly outwards from the window sash. Rainwater flowing from the bottom drips onto the top side of the sub-frame, then flows into the water storage chamber through the upper through-hole on the top side and the lower through-hole on the bottom side of the sub-frame. Due to the large internal space of the water storage chamber, the amount of rainwater stored is increased. When the rainwater in the water storage chamber cannot be discharged to the outside through the drain hole in time, the rainwater in the water storage chamber will not flow directly into the room. In this way, the water storage chamber is formed by enclosing the sub-frame and the bottom frame, which increases the space that can be set in the water storage chamber, thereby increasing the water storage capacity and effectively preventing rainwater backflow and easy water seepage into the room, thus improving the user experience of the casement window.

[0007] As a further improvement to the above technical solution, the top side of the lower frame is connected to a first support rib and a second support rib. The first support rib and the second support rib are arranged alternately towards the outside. The second support rib, the outer baffle, the lower frame, and the sub-frame enclose the water storage cavity. The first support rib and the second support rib can support the bottom side of the sub-frame. The first support rib and the second support rib are arranged alternately to better disperse the stress on the sub-frame near the indoor position and improve the structural stability of the sub-frame. The water storage cavity is formed on the outdoor side of the second support rib. A first seal is formed between the top side of the second support rib and the bottom side of the sub-frame, and another seal is formed between the top side of the first support rib and the bottom side of the sub-frame. This improves the sealing performance of the water storage cavity on the indoor side and further prevents rainwater from seeping into the room from the water storage cavity.

[0008] As a further improvement to the above technical solution, the top of the first support rib is bent towards the outside to form a first sealing section. A first sealing layer is provided between the top side of the first sealing section and the indoor side of the first support rib and the sub-frame, respectively. The first sealing section, with its bent top, forms a right-angled surface. This right-angled surface cooperates with the bottom side of the sub-frame, increasing the contact area between the first support rib and the sub-frame. Furthermore, the first sealing layer better fills the gap between the first sealing section and the sub-frame, making it difficult for rainwater in the water storage chamber to seep into the room, thus improving the sealing performance of the water storage chamber.

[0009] As a further improvement to the above technical solution, the top of the second support rib is bent horizontally to form a second sealing section, and a second sealing layer is provided between the top side of the second sealing section and the sub-frame. The horizontally bent second sealing section increases the contact area with the sub-frame, which not only further improves the stability of the sub-frame support but also increases the contact area. Furthermore, the second sealing layer fills the gap between the second sealing section and the sub-frame, improving the sealing performance of the water storage chamber and making it difficult for rainwater in the water storage chamber to seep into the room.

[0010] As a further improvement to the above technical solution, a raised rib is provided on the outer side of the sub-frame opposite the outer baffle. The top of the outer baffle is bent towards the inner side to form a connecting section, and a waterproof strip is provided between the connecting section and the raised rib. The connecting section at the top of the outer baffle increases the contact and support area with the sub-frame, thereby further improving the stability of the connection between the outer baffle and the sub-frame on the outer side. The waterproof strip is provided at the connection point between the outer side of the sub-frame and the outer baffle. During installation, the connecting section can elastically compress the waterproof strip, making it less likely for rainwater to seep out from the connection point between the outer side of the sub-frame and the outer baffle, thus improving the sealing performance of the connection between the sub-frame and the lower frame on the outer side.

[0011] As a further improvement to the above technical solution, a snap-fit ​​groove is provided on the outdoor side of the rib, and the waterproof strip snaps into the snap-fit ​​groove. The snap-fit ​​groove facilitates the installation and positioning of the waterproof strip. During installation, the connecting section elastically compresses the waterproof strip, and the snap-fit ​​groove itself restricts the position of the waterproof strip, effectively preventing the waterproof strip from slipping out at the connection point between the sub-frame and the lower frame, further improving the sealing performance of the sub-frame and the lower frame at the outdoor connection point.

[0012] As a further improvement to the above technical solution, a water-guiding slope is provided on the top side of the lower frame within the water storage cavity, and the water-guiding slope extends downwards towards the outside. The water-guiding slope can guide rainwater in the water storage cavity to the outside, accelerating the efficiency of rainwater discharge to the outside and helping to prevent rainwater from accumulating within the water-guiding slope.

[0013] As a further improvement to the above technical solution, a mounting groove is provided on the top side of the sub-frame. An external sealing strip can be installed in the mounting groove, and the sealing strip abuts against the window sash installed above the sub-frame, thereby improving the overall airtightness.

[0014] As a further improvement to the above technical solution, the top corner of the outer side of the sub-frame is a concave corner. When the external window sash is installed above the sub-frame, the concave corner can avoid the window sash and form a right-angled gap between the side of the window sash and the sub-frame, thus better preventing seepage inward from the position between the window sash and the sub-frame.

[0015] A casement window, including the aforementioned rainwater backflow prevention window frame.

[0016] This technical solution has at least the following beneficial effects: Since the casement window is equipped with the aforementioned rainwater backflow prevention window frame, a water storage cavity is formed between the sub-frame and the lower frame, which increases the space that can be set in the water storage cavity, thereby increasing the water storage capacity, effectively preventing rainwater backflow and easy water seepage into the room, and improving the user experience of the casement window. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the rainwater backflow prevention window frame structure of this utility model.

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

[0020] In the attached diagram: 100-lower frame, 110-outer extension plate, 111-drainage hole, 120-outer baffle, 121-connecting section, 122-waterproof strip, 130-first support rib, 131-first sealing section, 140-second support rib, 141-second sealing section, 150-water guiding slope, 200-sub-frame, 210-water storage cavity, 220-upper through hole, 230-lower through hole, 240-mounting groove, 250-concave angle. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figure 1 A rainwater backflow prevention window frame includes a lower frame 100 and a sub-frame 200. The side of the lower frame 100 facing outwards is the outdoor side, and the side facing inwards is the indoor side. An extension plate 110 is connected to the outdoor side of the lower frame 100. The extension plate 110 has drainage holes 111, and an upwardly extending outer baffle 120 is connected to the outdoor side of the extension plate 110. In practical applications, the extension plate 110, the outer baffle 120, and the lower frame 100 can be integrally formed to improve overall production efficiency. The drainage holes 111 on the extension plate 110... Multiple sub-frames 200 are spaced apart along the length of the lower frame 100; the outdoor side of the sub-frame 200 abuts against the top side of the outer baffle 120, and the indoor side of the sub-frame 200 abuts against the top side of the lower frame 100. A water storage cavity 210 is formed between the sub-frame 200 and the lower frame 100. An upper through hole 220 is provided on the top side of the sub-frame 200 near the outdoor side, and a lower through hole 230 is provided on the bottom side of the sub-frame 200 near the outdoor side. In practical applications, multiple upper through holes 220 and lower through holes 230 are also spaced apart along the length of the sub-frame 200.

[0026] As described above, after the sub-frame 200 is installed on the top side of the lower frame 100, a water storage cavity 210 is formed between the sub-frame 200 and the lower frame 100. Because the area covered between the sub-frame 200 and the lower frame 100 along the indoor-outdoor direction is large, the internal space of the formed water storage cavity 210 is relatively large. At the outdoor side of the lower frame 100, the outer extension plate 110 and the outer baffle 120 form a right-angled protrusion structure, allowing rainwater to be directly discharged outwards from the drainage holes 111 provided on the outer extension plate 110. The external window sash is installed above the sub-frame 200. When water enters the window sash due to high wind pressure, it flows out from the bottom side of the window sash. Rainwater drips onto the top side of the sub-frame 200, and flows into the water storage chamber 210 after passing through the upper through hole 220 on the top side of the sub-frame 200 and the lower through hole 230 on the bottom side of the sub-frame 200. Because the internal space of the water storage chamber 210 is relatively large, the amount of rainwater stored is increased. When the rainwater in the water storage chamber 210 fails to be discharged to the outside through the drain hole 111 in time, the rainwater in the water storage chamber 210 will not flow directly into the room. In this way, the water storage chamber 210 is formed by the sub-frame 200 and the lower frame 100, which increases the space that the water storage chamber 210 can be set up, thereby increasing the water storage capacity and effectively preventing rainwater backflow and easy water seepage into the room, thus improving the user experience of the casement window.

[0027] The sub-frame 200 has a downwardly protruding structure on the indoor side. This protruding structure abuts against the top side of the lower frame 100, creating a space between the sub-frame 200 and the lower frame 100. In the above embodiment, the indoor side of the sub-frame 200 can be supported solely by this downwardly protruding structure. To further improve the structural stability of the sub-frame 200, in this embodiment, the top side of the lower frame 100 is connected to a first support rib 130 and a second support rib 140. The first support rib 130 and the second support rib 140 are arranged alternately in the direction of outdoor movement. The second support rib 140, the outer baffle 120, the lower frame 100, and the sub-frame 200 enclose the water storage cavity 210. The first support rib 130 and the second support rib 140 can support the bottom side of the sub-frame 200. The first support rib 130 and the second support rib 140 are spaced apart to better disperse the stress on the sub-frame 200 near the indoor position and improve the structural stability of the sub-frame 200. The water storage cavity 210 is formed on the outdoor side of the second support rib 140. A first seal is formed between the top side of the second support rib 140 and the bottom side of the sub-frame 200, and another seal is formed between the top side of the first support rib 130 and the bottom side of the sub-frame 200. This improves the sealing performance of the water storage cavity 210 on the indoor side and further prevents rainwater from seeping into the room from the water storage cavity 210.

[0028] The first supporting rib 130 can be a vertically extending plate structure. To improve the sealing between the first supporting rib 130 and the sub-frame 200, in this embodiment, the top of the first supporting rib 130 is bent towards the outside to form a first sealing section 131. A first sealing layer is provided between the top side of the first sealing section 131, the indoor side of the first supporting rib 130, and the sub-frame 200. The first sealing section 131, bent at the top of the first supporting rib 130, forms a right-angled surface. This right-angled surface cooperates with the bottom side of the sub-frame 200, increasing the contact area between the first supporting rib 130 and the sub-frame 200. Furthermore, the first sealing layer better fills the gap between the first sealing section 131 and the sub-frame 200, making it difficult for rainwater in the water storage chamber 210 to seep into the room, thus improving the sealing of the water storage chamber 210.

[0029] The second support rib 140 can be a vertically extending plate structure. Similarly, to improve the sealing between the second support rib 140 and the sub-frame 200, in this embodiment, the top of the second support rib 140 is bent horizontally to form a second sealing section 141. A second sealing layer is provided between the top side of the second sealing section 141 and the sub-frame 200. In practical applications, the second sealing section 141 extends towards the interior. At this time, a groove is formed between the first support rib 130, the second support rib 140, the first sealing section 131, and the second sealing section 141, which can be used to expand the structural components for connecting external devices. The horizontally bent second sealing section 141 increases the contact area with the sub-frame 200, which can further improve the stability of the support for the sub-frame 200 and increase the contact area with the sub-frame 200. The second sealing layer fills the gap between the second sealing section 141 and the sub-frame 200, improving the sealing of the water storage chamber 210 and making it difficult for rainwater in the water storage chamber 210 to seep into the interior.

[0030] To improve the sealing performance of the sub-frame 200 at the connection between the outdoor side and the outer baffle 120, in this embodiment, a raised rib is provided on the outdoor side of the sub-frame 200 directly opposite the outer baffle 120. The top of the outer baffle 120 is bent towards the indoor side to form a connecting section 121, and a waterproof strip 122 is provided between the connecting section 121 and the raised rib. The connecting section 121 at the top of the outer baffle 120 increases the contact support area with the sub-frame 200, thereby further improving the stability of the connection between the outer baffle 120 and the sub-frame 200 on the outdoor side. The waterproof strip 122 is provided at the connection point between the outdoor side of the sub-frame 200 and the outer baffle 120. During installation, the connecting section 121 can elastically compress the waterproof strip 122, making it difficult for rainwater to seep out from the connection point between the outdoor side of the sub-frame 200 and the outer baffle 120, thus improving the sealing performance of the connection between the sub-frame 200 and the lower frame 100 on the outdoor side.

[0031] Furthermore, a snap-fit ​​groove is provided on the outdoor side of the rib, and the waterproof strip 122 snaps into the snap-fit ​​groove. The snap-fit ​​groove facilitates the installation and positioning of the waterproof strip 122. During installation, the connecting section 121 elastically compresses the waterproof strip 122, and the snap-fit ​​groove itself restricts the position of the waterproof strip 122, effectively preventing the waterproof strip 122 from slipping out at the connection position between the sub-frame 200 and the lower frame 100, further improving the sealing performance of the sub-frame 200 and the lower frame 100 at the outdoor connection position.

[0032] In the above embodiment, the top side of the lower frame 100 can be a plane. In order to improve drainage efficiency, in this embodiment, a water guiding slope 150 is provided on the top side of the lower frame 100 at the position inside the water storage cavity 210. The water guiding slope 150 extends downwards towards the outside. In practical applications, the lower frame 100 can be a thermal break design, that is, the two sides are metal profiles, and a heat insulation strip is connected between the two metal profiles. At this time, the top surface of the metal profile on the indoor side can be uninclined, while the top surface of the heat insulation strip and the top surface of the metal profile on the outdoor side are inclined. In this way, the top surface of the heat insulation strip and the top surface of the metal profile on the outdoor side together form the water guiding slope 150. When the lower frame 100 is a one-piece metal profile, the water guiding slope 150 can be provided only at the middle position of the lower frame 100. The slope of the water guiding slope 150 can be 1 degree to 3 degrees. The water guiding slope 150 can guide the rainwater in the water storage chamber 210 to the outdoor side, accelerate the efficiency of rainwater discharge to the outside, and help prevent rainwater from accumulating in the water guiding slope 150.

[0033] In some embodiments, a mounting groove 240 is provided on the top side of the sub-frame 200. An external sealing strip can be installed in the mounting groove 240, and the sealing strip abuts against the window sash installed above the sub-frame 200 to improve the overall airtightness.

[0034] In some embodiments, the top corner of the exterior side of the subframe 200 is a concave angle 250. When the exterior window sash is installed above the subframe 200, the concave angle 250 can avoid the window sash and form a right-angle gap between the side of the window sash and the subframe 200, which better prevents seepage inward from the position between the window sash and the subframe 200.

[0035] like Figure 2 As shown, a casement window includes the aforementioned rainwater backflow prevention window frame, with the window sash installed inside the rainwater backflow prevention window frame. At this time, rainwater seeping into the window sash can drip down to the upper through hole 220 on the top side of the sub-frame 200.

[0036] Because the casement window is equipped with the aforementioned rainwater backflow prevention window frame, a water storage cavity 210 is formed between the sub-frame 200 and the lower frame 100, which increases the space that the water storage cavity 210 can be installed, thereby increasing the water storage capacity and effectively preventing rainwater backflow from easily seeping into the room, thus improving the user experience of the casement window.

[0037] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A window frame designed to prevent rainwater backflow, characterized in that: include: The lower frame (100) has an extension plate (110) connected to its outdoor side. The extension plate (110) is provided with a drainage hole (111). The outdoor side of the extension plate (110) is connected to an upwardly extending outer baffle (120). The sub-frame (200) has its outdoor side abutting against the top side of the outer baffle (120), and its indoor side abutting against the top side of the lower frame (100). A water storage cavity (210) is formed between the sub-frame (200) and the lower frame (100). An upper through hole (220) is provided on the top side of the sub-frame (200) near the outdoor side, and a lower through hole (230) is provided on the bottom side of the sub-frame (200) near the outdoor side.

2. The rainwater backflow prevention window frame according to claim 1, characterized in that: The top side of the lower frame (100) is connected to a first support rib (130) and a second support rib (140). The first support rib (130) and the second support rib (140) are arranged alternately in the direction of the outside. The water storage cavity (210) is formed between the second support rib (140), the outer baffle (120), the lower frame (100) and the sub-frame (200).

3. A rainwater backflow prevention window frame according to claim 2, characterized in that: The top of the first support rib (130) is bent towards the outside to form a first sealing section (131). A first sealing layer is provided between the top side of the first sealing section (131), the indoor side of the first support rib (130), and the sub-frame (200).

4. A rainwater backflow prevention window frame according to claim 2, characterized in that: The top end of the second support rib (140) is bent horizontally to form a second sealing section (141), and a second sealing layer is provided between the top side of the second sealing section (141) and the sub-frame (200).

5. A rainwater backflow prevention window frame according to claim 1, characterized in that: The sub-frame (200) has a raised rib on the outdoor side facing the outer baffle (120). The top of the outer baffle (120) is bent towards the indoor side to form a connecting section (121). A waterproof strip (122) is provided between the connecting section (121) and the raised rib.

6. A rainwater backflow prevention window frame according to claim 5, characterized in that: The outdoor side of the rib is provided with a snap-fit ​​groove, and the waterproof strip (122) is snapped into the snap-fit ​​groove.

7. A rainwater backflow prevention window frame according to claim 1, characterized in that: A water guiding slope (150) is provided on the top side of the lower frame (100) at a position inside the water storage cavity (210), and the water guiding slope (150) extends downwards at an angle toward the outside.

8. A rainwater backflow prevention window frame according to claim 1, characterized in that: The top side of the sub-frame (200) is provided with a mounting groove (240).

9. A rainwater backflow prevention window frame according to claim 1, characterized in that: The top corner of the outer side of the sub-frame (200) is a concave angle (250).

10. A casement window, characterized in that: Includes a window frame that prevents rainwater backflow as described in any one of claims 1 to 9.

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