A type of screen for center-hung windows

Abstract

This utility model relates to the field of door and window structure technology, and discloses a screen for a center-hung window, including a rectangular window frame and a fan-shaped screen mounted on the window frame. The screen includes a semi-circular ring located in the middle of the window frame, several U-shaped support rods evenly distributed along the circumference of the semi-circular ring, and a screen fixedly connected to each support rod in a fan shape. Two semi-circular rings are fixedly connected to two opposite profiles of the window frame, with each support rod having two ends close to its corresponding semi-circular ring. The portion of the screen near the semi-circular ring is slidably connected to it. The screen is installed quickly and conveniently by connecting the four corners of the window frame to the center-hung window frame with screws. When the center-hung window is opened, the upper part of the screen flips inwards. After the screen is unfolded, it rests against the window frame, thus covering the center-hung window and ensuring a tight seal between the screen and the window frame.

Description

Technical Field

[0001] This utility model relates to the field of door and window structure technology, and in particular to a screen for a center-hung window. Background Technology

[0002] The rotating axis of the center-hung window is installed in the middle of the left and right side rails of the screen sash, which rotates along the horizontal axis to open. When opened, the upper half of the screen sash flips inwards, and the lower half flips outwards, forming a two-way opening and closing mechanism. Because its opening area is close to the window area, it can create a large-volume air circulation.

[0003] Currently, center-hung windows typically use split screens, meaning the screen is divided into upper and lower sections. The upper section is installed on the outside of the window, and the lower section is installed on the inside. Because screens need to be installed on both the inside and outside of a center-hung window, this type of screen is not only cumbersome and time-consuming to install, but also prone to poor sealing between the screen edges and the screen sash, making maintenance and replacement difficult. Therefore, many center-hung windows do not have screens installed.

[0004] Patent CN207960292U discloses a non-powered adjustable airflow vent. The vent's center of gravity is located at the top of its rotation axis. When opened via the handle, the vent is open in calm or light wind conditions due to the combined action of gravity and a return torsion spring, allowing ventilation into the room. Because the lower part of the vent has a larger area than the upper part, and the upper screen is external while the lower screen is internal, the torque generated by the outdoor wind pressure is opposite to the gravitational moment. The higher the outdoor wind speed, the smaller the vent opening, and vice versa. Since screens need to be installed on both the inner and outer sides of the vent, installation and replacement of the two screens, especially the outer one, is cumbersome. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a screen for center-hung windows, which solves the problem of cumbersome, time-consuming and labor-intensive installation of the screens currently used in center-hung windows.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A screen for a center-hung window includes a rectangular window frame and a fan-shaped screen mounted on the window frame. The screen includes a semicircular ring in the middle of the window frame, several U-shaped support rods evenly distributed along the circumference of the semicircular ring, and a screen fixedly connected to each support rod in a fan shape. The semicircular ring consists of two semicircular rings, which are respectively fixedly connected to two opposite profiles of the window frame. The two ends of each support rod are close to the corresponding semicircular ring, and the part of the screen close to the semicircular ring is slidably connected to the semicircular ring.

[0008] Furthermore, two pairs of buckles are fixedly connected to the window frame. When the screen is unfolded, the two outermost support rods are respectively locked in the corresponding pair of buckles; when the screen is folded, the support rods are all locked in one of the pairs of buckles.

[0009] Furthermore, each pair of buckles has two buckles, each corresponding to one of the two semicircular rings. The buckles are all U-shaped, and their bottoms are fixedly connected to the window frame. A second latch is provided inside the buckle near its bottom, and a first latch is provided inside the buckle near its opening. When the screen is folded, one support rod near the window frame is locked in the second latch, and the remaining support rods are locked in the first latch. When the screen is unfolded, the two outer support rods are locked in the second latches on their respective buckles.

[0010] Furthermore, the support rod includes two parallel first straight rods and a second straight rod disposed between one end of the two first straight rods. The other ends of the two first straight rods are respectively close to two semicircular rings, and the two ends of the second straight rod are connected to the corresponding first straight rods by connectors.

[0011] Furthermore, the connecting member is a spring that bends at 90° between the two ends of the second straight rod and the corresponding end of the first straight rod, and the two ends of the spring are fixedly connected to the first straight rod and the second straight rod, respectively.

[0012] Furthermore, the connector is a plastic plug-in component that is bent at 90°.

[0013] Furthermore, the window screen is laid along the inner side of the support rod, and the outer side of the support rod is covered with a strip of cloth. The support rod is sandwiched between the window screen and the strip of cloth, and the strip of cloth and the window screen are sewn together.

[0014] The positive effects of this utility model are:

[0015] This utility model is installed indoors and includes a window frame and a screen. The screen is installed by connecting the four corners of the window frame to the frame of a center-hung window using screws, making installation very quick and convenient. When the center-hung window is opened, the upper part of its sash flips inwards. After the screen is unfolded, it rests against the window frame, thus covering the center-hung window. The screen and the center-hung window sash do not contact each other, ensuring a tight seal between the utility model and the center-hung window regardless of the opening angle. Furthermore, because the screen is fan-shaped and covers the center-hung window, it will not interfere with the flipped-in window sash during opening, ensuring the screen's normal unfolding and folding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the invention after it has been unfolded.

[0017] Figure 2 yes Figure 1 A diagram showing the window screen after it has been removed;

[0018] Figure 3 yes Figure 2 A magnified view of a section of the central I area;

[0019] Figure 4 This is a schematic diagram of the external shape of the support rod in Example 3;

[0020] Figure 5 This is a diagram showing the use of this utility model from an indoor perspective;

[0021] Figure 6 yes Figure 5 The right-side view;

[0022] In the picture:

[0023] 1. Roof; 2. Screen; 3. Center-hung window; 4. Buckle; 5. Window screen; 6. Support rod; 7. Window frame; 8. Semicircular ring; 9. First latch; 10. Second latch; 11. First straight rod; 12. Second straight rod; 13. Spring; 14. Screen sash; 15. Fabric strip. Detailed Implementation

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, a screen window for a center-hung window includes a rectangular window frame 7 and a fan-shaped screen 14 mounted on the window frame 7. The screen 14 includes a semi-circular ring 8 located in the middle of the window frame 7, five U-shaped support rods 6 evenly distributed along the circumference of the ring, and a screen 5 fixedly connected in a fan shape to each support rod 6. The semi-circular rings 8 are two in number, respectively fixedly connected to two opposite profiles of the window frame 7. The two ends of each support rod 6 are close to the corresponding semi-circular ring 8, and the part of the screen 5 close to the semi-circular ring 8 is slidably connected to the semi-circular ring 8.

[0026] The window screen 5 is laid along the inner side of the support rod 6, and the outer side of the support rod 6 is covered with a strip of cloth 15. The support rod 6 is sandwiched between the window screen 5 and the strip of cloth 15. The strip of cloth 15 and the window screen 5 are sewn together, so that when the screen 14 is unfolded, the support rod 6 supports the window screen 5.

[0027] The window screen 5 and the semicircular ring 8 can also be connected in the manner described above. A semicircular fabric strip with the same shape as the semicircular ring is used to sandwich the semicircular ring 8 between the semicircular fabric strip and the side of the window screen 5, and then the window screen 5 is sewn to the semicircular fabric strip. When the screen 14 is unfolded or folded, the semicircular fabric strip can stretch and contract along the semicircular ring.

[0028] Combination Figure 5 and Figure 6As shown, the center-hung window 3 is installed on the sloping roof 1 of the attic, and the screen window 2 is installed inside the room. The four corners of the window frame 7 are connected to the frame of the center-hung window 3 by screws, which completes the installation of the screen window. Therefore, the installation is very quick and convenient.

[0029] When the center-hung window 3 is opened, the upper part of its sash will flip inwards. Pulling the support rod 6 will open the screen sash 14 in a fan shape, allowing it to rest against the window frame 7, thus covering the center-hung window 3 and ensuring a tight seal between the screen sash 14 and the window frame 7. Simultaneously, the screen sash 14 will not interfere with the flipped-in window sash during opening, ensuring its normal unfolding and folding.

[0030] Example 2

[0031] Combination Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that:

[0032] The window frame 7 is fixedly connected with two pairs of four clips 4, which are located near the four corners of the window frame 7. When the screen sash 14 is unfolded, the two outermost support rods 6 are respectively locked into the corresponding pair of clips 4. When the screen sash 14 is folded, the support rods 6 are all locked into one pair of clips 4.

[0033] Two buckles 4 are respectively set on the profiles corresponding to the window frame 7 and the two semi-circular rings 8. The buckles 4 are all U-shaped. The bottom of the buckle 4 is fixedly connected to the window frame 7 by screws. A second latch 10 is provided inside the buckle 4 near its bottom position, and a first latch 9 is provided inside the buckle 4 near its top opening.

[0034] like Figure 1 and Figure 2 As shown, the leftmost support rod 6 is engaged in the second slot 10 of the pair of leftmost clips 4, and the rightmost support rod 6 is engaged in the second slot 10 of the pair of rightmost clips 4. When the leftmost support rod 6 is rotated clockwise, the gauze fan 14 folds clockwise. Except for the rightmost support rod 6, the remaining support rods 6 are stacked and engaged in the first slot 9 of the pair of rightmost clips 4. Pulling the outermost support rod 6 in the first slot 9 will unfold the gauze fan 14 counterclockwise.

[0035] Example 3

[0036] Combination Figure 4 As shown, the difference between this embodiment and Embodiment 2 is that:

[0037] The support rod 6 includes two parallel first straight rods 11 and a second straight rod 12 disposed between one end of the two first straight rods 11. The other ends of the two first straight rods 11 are respectively close to two semicircular rings 8. The two ends of the second straight rod 12 are connected to the corresponding first straight rods 11 by connectors. The connector is a spring 13 bent at 90° between the two ends of the second straight rod 12 and the corresponding ends of the first straight rod 11. The two ends of the spring 13 are fixedly connected to the first straight rod 11 and the second straight rod 12 respectively. The two ends of the spring 13 are elastically wrapped around and clamped to the first straight rod 11 and the second straight rod 12. The spring 13 is wrapped between the fabric strip 15 and the window screen 5.

[0038] When the screen sash 14 is open, if it is accidentally impacted, the support rod 6 will twist and deform because the first straight rod 11 and the second straight rod 12 are connected by a spring 13. Once the impact force disappears, the support rod 6 will return to its original shape, thus preventing deformation due to the impact. This would prevent the screen sash 14 from failing to close or interfering with the window sash of the center-hung window 6. Additionally, if a person hits the corner of the support rod 6, the deformed support rod 6 will also prevent injury.

[0039] Example 4

[0040] The difference between this embodiment and embodiment 3 is that:

[0041] Both the first straight rod 11 and the second straight rod 12 are made of tubing. The connector is a plastic plug-in with a 90° bend, and both ends of the plastic plug-in are inserted into the first straight rod 11 and the second straight rod 12, respectively. The plastic plug-in uses a commonly used PVC elbow, which reduces the manufacturing cost of the support rod 6.

[0042] The above-described embodiments are detailed and specific, illustrating preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, with the aim of enabling those skilled in the art to understand the content of the present utility model and implement it accordingly. However, they are not limited to the present utility model, and the patent scope of the present utility model cannot be limited by this embodiment alone. That is, any equivalent changes or modifications made to the spirit disclosed in the present utility model, without departing from the structure of the present utility model, such as local improvements within the system and modifications or transformations between subsystems, are still within the patent scope of the present utility model.

Claims

1. A screen for a center-hung window, characterized in that, The window includes a rectangular window frame (7) and a fan-shaped screen (14) that can be unfolded on the window frame (7). The fan (14) includes a semi-circular ring (8) in the middle of the window frame (7), several door-shaped support rods (6) evenly distributed along the circumference of the ring, and a window screen (5) fixedly connected to each support rod (6) in a fan shape. The semi-circular ring (8) consists of two that are fixedly connected to two opposite profiles of the window frame (7). The two ends of each support rod (6) are close to the corresponding semi-circular ring (8). The part of the window screen (5) close to the semi-circular ring (8) is slidably connected to the semi-circular ring (8).

2. A screen for a horizontally sliding window according to claim 1, wherein Two pairs of buckles (4) are fixedly connected to the window frame (7). When the screen (14) is unfolded, the two outer support rods (6) are respectively locked in the corresponding pair of buckles (4). When the screen (14) is folded, the support rods (6) are all locked in one of the pairs of buckles (4).

3. A screen for a horizontally sliding window according to claim 2, wherein There are two buckles (4) in each pair. The two buckles (4) correspond to the two semicircular rings (8) respectively. The buckles (4) are all U-shaped. The bottom of the buckle (4) is fixedly connected to the window frame (7). A second latch (10) is provided in the buckle (4) near its bottom. A first latch (9) is provided in the buckle (4) near its opening. When the screen (14) is folded, one support rod (6) near the window frame (7) is locked in the second latch (10), and the other support rods (6) are locked in the first latch (9). When the screen (14) is unfolded, the two outer support rods (6) are locked in the second latch (10) on the corresponding buckle (4) respectively.

4. The screen for a horizontally sliding window according to claim 1, wherein The support rod (6) includes two parallel first straight rods (11) and a second straight rod (12) disposed between one end of the two first straight rods (11). The other ends of the two first straight rods (11) are respectively close to the two semicircular rings (8). The two ends of the second straight rod (12) and the corresponding first straight rods (11) are respectively connected by connectors.

5. A screen for a center-hung window according to claim 4, characterized in that, The connecting component is a spring (13) that is bent at 90° between the two ends of the second straight rod (12) and the corresponding end of the first straight rod (11). The two ends of the spring (13) are fixedly connected to the first straight rod (11) and the second straight rod (12), respectively.

6. A screen for a horizontally sliding window according to claim 4, wherein The connector is a plastic plug-in component that is bent at 90°.

7. The screen for a horizontally sliding window according to claim 1, wherein The window screen (5) is laid along the inner side of the support rod (6), and the outer side of the support rod (6) is covered with a strip of cloth (15). The support rod (6) is sandwiched between the window screen (5) and the strip of cloth (15), and the strip of cloth (15) and the window screen (5) are sewn together.

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