Detachable sliding screen window for casement window track

Abstract

The utility model discloses a detachable sliding screen window for a casement window track, which comprises a casement window frame and a screen window frame, a screen rolling box is arranged at the top of the inner side of the screen window frame, and the edge of the top of the screen rolling box is a strip-shaped bulge; an L-shaped buckling strip is arranged at the top of the inner side of the casement window frame; at least two rectangular containing bins are arranged in the bottom of the casement window frame, and a movable fastening device is arranged in each rectangular containing bin. Each movable fastening device comprises a second spring and a spring plate, the spring plates transversely extend outwards and are fixedly connected with push plates after penetrating through the strip-shaped through holes, and wedge-shaped fastening plates are fixedly connected to the push plates. The L-shaped buckling strip on the inner side of the casement window frame is matched with the strip-shaped protrusion on the edge of the top of the screen window frame, and the screen window frame can be easily disassembled by pressing the movable buckling device downwards during disassembly, so that the whole screen window frame is easy and convenient to disassemble and assemble, and convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of casement window screen technology, and in particular to a detachable sliding screen for casement window tracks. Background Technology

[0002] Currently, the mainstream window types on the market are casement windows and sliding windows. Casement windows are a type of window that uses hinges as support points and opens horizontally by rotating the window sash inwards or outwards. Their core feature is that the window sash and frame are connected by hinges, forming a cantilevered load-bearing structure, allowing for complete closure or large-angle opening. Based on the opening direction, they are divided into inward-opening and outward-opening types, and some modern products also have multiple opening methods such as top-hung and bottom-hung. Compared to sliding windows, casement windows have a larger opening area, better ventilation, and when closed, they are locked at multiple points using rubber strips, resulting in better airtightness and watertightness, effectively isolating noise and rainwater penetration.

[0003] Casement windows typically use either inward-opening screens or retractable roller-sliding screens. The core design of retractable roller-sliding screens involves using a roller mechanism to store the screen mesh in a hidden box. When in use, the screen is pulled down to cover the window; when not in use, it automatically rolls back into the box, achieving an "invisible" effect, maintaining ventilation and mosquito protection without obstructing the view. Retractable roller-sliding screens, located on the inside, often need to maintain ventilation, thus trapping dust, pollen, bacteria, insect remains, and other pollutants in the air. These contaminants can easily breed bacteria and mold in humid environments. Accumulated dust can clog the mesh, hindering airflow and reducing indoor ventilation efficiency. Therefore, with accumulated use, regular cleaning of the screen is necessary to maintain fresh indoor air and a clean environment. Currently, retractable roller-sliding screens are difficult to disassemble, requiring time and effort, and making cleaning challenging. In some designs, although the screen can be removed for cleaning, dust, pollen, and other contaminants still remain in the tracks and grooves of the retractable roller sliding screen, affecting the normal sliding operation of the screen and making it difficult to clean thoroughly. Utility Model Content

[0004] This utility model addresses the technical problem of the difficulty in disassembling and thoroughly cleaning invisible roller sliding screens used for casement windows. It provides a detachable sliding screen for casement window tracks, including a casement window frame and a screen frame. The top of the inner side of the screen frame is provided with a screen roll box, and its top edge is a strip-shaped protrusion.

[0005] The top of the inner side of the casement window frame is provided with an "L"-shaped fastening strip;

[0006] The “L”-shaped fastener is fixedly installed on the casement window frame in an inverted manner, and forms a strip groove with the casement window frame. The strip groove matches the strip protrusion to ensure that the screen window frame can be embedded in the casement window frame.

[0007] The bottom of the casement window frame is provided with at least two rectangular receiving compartments, each rectangular receiving compartment has a strip-shaped through hole on the outside, and each rectangular receiving compartment is provided with a movable fastening device.

[0008] Each of the aforementioned movable fastening devices includes a second spring and a spring plate. The spring plate extends laterally outward and is fixedly connected to a push plate after passing through the strip-shaped through hole, so as to ensure that the spring plate and the push plate can move as a whole along the strip-shaped through hole in the vertical direction. A wedge-shaped fastening plate is fixedly connected to the push plate.

[0009] Preferably, in the above technical solution, one end of the second spring is fixedly connected to the spring plate, and the other end is fixedly connected to the bottom of the rectangular accommodating compartment.

[0010] Preferably, in the above technical solution, the inner ring of the casement window frame is provided with an annular groove to ensure that the screen window frame can be embedded in the casement window frame;

[0011] The bottom of the annular groove is provided with at least two spring grooves, which are located at positions corresponding to the bottom of the casement window frame.

[0012] Preferably, in the above technical solution, each of the spring grooves is provided with a third spring, and the third spring is fixedly connected to the bottom of the spring groove.

[0013] Preferably, in the above technical solution, a plurality of first springs are uniformly provided at the bottom of the strip groove.

[0014] Preferably, in the above technical solution, a wear-resistant pad is provided on the surface of the wedge-shaped buckle plate that is in contact with the screen window frame.

[0015] Preferably, in the above technical solution, the bottom edge of the screen window frame close to the casement window frame is set as an arc surface.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention utilizes an "L"-shaped fastener on the inner side of the casement window frame and a strip-shaped protrusion on the top edge of the screen window frame, along with a movable fastening device at the bottom of the casement window frame, to securely fix the entire screen window frame to the inside of the casement window frame. To disassemble, simply press down on the movable fastening device to remove the screen window frame. To install, insert the strip-shaped protrusion on the top edge of the screen window frame into the "L"-shaped fastener on the inner side of the casement window frame, and then press the screen window frame until the movable fastening device locks it in place. The disassembly and installation of the entire screen window frame is simple and convenient, solving the problems of difficulty in disassembly and thorough cleaning.

[0018] The springs installed in the strip groove and the springs at the bottom of the annular groove can provide stress control to the screen window frame after installation, thereby preventing the screen window frame from vibrating due to airflow and colliding with the casement window frame, thus avoiding noise pollution. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a detachable sliding screen window for a casement window track according to the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of the movable fastening device and the screen window frame;

[0021] Figure 3 This is a side view of the positional relationship between the screen window frame and the casement window frame in a detachable sliding screen window track according to the present invention. Figure 1 ;

[0022] Figure 4 This is a side view of the positional relationship between the screen window frame and the casement window frame in a detachable sliding screen window track according to the present invention. Figure 2 ;

[0023] Figure 5 This is a side view of the connection relationship between the screen window frame and the movable fastening device in a detachable sliding screen window for a casement window track according to the present invention.

[0024] Figure 6 This is a schematic diagram of the wedge-shaped buckle plate structure of a movable fastening device for a detachable sliding screen window track of the present invention;

[0025] Figure 7 This is a bottom view of a movable fastening device for a detachable sliding screen window track according to the present invention;

[0026] Figure 8 This is a schematic diagram of the cross-section of the casement window frame and the screen window frame in a detachable sliding screen window for casement window tracks according to this utility model.

[0027] Explanation of key figure labels:

[0028] 1-Case window frame, 2-Screen window frame, 3-Modible fastening device, 11-"L" shaped buckle strip, 13-Strip through hole, 15-Strip groove, 16-First spring, 17-Rectangular receiving compartment, 18-Annular groove, 21-Screen roll box, 22-Strip protrusion, 23-Screen, 31-Wedge-shaped buckle plate, 32-Push plate, 33-Second spring, 35-Spring plate, 181-Spring groove, 182-Third spring, 311-Wear-resistant pad. Detailed Implementation

[0029] 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.

[0030] like Figures 1-8As shown, this utility model discloses a detachable sliding screen window for a casement window track, including a casement window frame 1 and a screen window frame 2. The top inner side of the screen window frame 2 is provided with a screen roll-up box 21, the top edge of which has a strip-shaped protrusion 22. The screen roll-up box 21 achieves automatic screen retraction via a torsion spring roller blind mechanism, and after being retracted, it is completely hidden in the box at the top of the window frame, making it almost imperceptible. The screen roll-up box 21 supports multiple opening methods such as manual, electric, and chain bead opening, and the screen can be unfolded vertically or horizontally. The top inner side of the casement window frame 1 is provided with an "L"-shaped fastener 11; the "L"-shaped fastener 11 is fixedly installed on the casement window frame 1 in an inverted manner, forming a strip-shaped groove 15 with the casement window frame 1. The strip-shaped groove 15 matches the strip-shaped protrusion 22 to ensure that the screen window frame 2 can be embedded in the casement window frame 1; multiple first springs 16 are evenly provided at the bottom of the strip-shaped groove 15. The bottom of the casement window frame 1 is provided with at least two rectangular receiving compartments 17. Each rectangular receiving compartment 17 has a strip-shaped through hole 13 on its outer side. Each rectangular receiving compartment 17 is provided with a movable fastening device 3. The number of movable fastening devices 3 corresponds to the number of rectangular receiving compartments 17. In this embodiment, the number of rectangular receiving compartments 17 and movable fastening devices 3 is preferably two, and they are installed symmetrically at the bottom of the casement window frame 1. The two movable fastening devices 3 can maintain the stability of the fixed screen window frame 2. On the other hand, the operator can operate with both hands at the same time, which is convenient for disassembly and installation. Each movable fastening device 3 includes a second spring 33 and a spring plate 35. The spring plate 35 extends laterally outward and is fixedly connected to a push plate 32 after passing through the strip-shaped through hole 13 to ensure that the spring plate 35 and the push plate 32 can move vertically along the strip-shaped through hole 13 as a whole. A wedge-shaped buckle plate 31 is fixedly connected to the push plate 32. One end of the second spring 33 is fixedly connected to the spring plate 35, and the other end is fixedly connected to the bottom of the rectangular accommodating compartment 17. The inner ring of the casement window frame 1 is provided with an annular groove 18 to ensure that the screen window frame 2 can be embedded in the casement window frame 1; at this time, the screen window frame 2 is embedded in the casement window frame 1, and the surface of the screen window frame 2 and the surface of the casement window frame 1 are at the same level, improving the appearance quality.

[0031] In this embodiment, as Figure 8As shown, the bottom of the annular groove 18 is provided with at least two spring grooves 181, which are located at corresponding positions near the bottom of the casement window frame 1. Each spring groove 181 contains a third spring 182, which is fixedly connected to the bottom of the spring groove 181. The number of spring grooves 181 and the number of third springs 182 should not be excessive; otherwise, the elastic force will be too great, increasing the difficulty of installation and causing excessive stress on the movable fastening device 3, leading to breakage. In this embodiment, the number of spring grooves 181 and the number of third springs 182 are preferably four, with two spring grooves on the bottom of each annular groove 18 of the casement window frame 1.

[0032] During use, the operator simultaneously presses down the push plate 32 of the movable fastening device 3, causing the wedge-shaped fastener 31 to disengage from the screen window frame 2. At this time, the third spring 182, located at the bottom of the annular groove 18, applies elastic force to the screen window frame 2, pushing the screen window frame 2 outward. The operator then pulls the screen window frame 2 downward, causing the strip-shaped protrusion 22 at its top to disengage from the strip-shaped groove 15, thus completing the overall disassembly of the screen window frame 2. During cleaning, not only can the dust, pollen, bacteria, insect remains, and other contaminants deposited on the screen be removed, but the sliding rails and grooves of the retractable roller sliding screen can also be rinsed, making automatic rewinding or manual sliding smoother, achieving a thorough cleaning of the retractable roller sliding screen. After cleaning and drying, the operator aligns the top strip protrusion 22 with the strip groove 15, pushes upward to compress the first spring 16, and then presses inward on the screen window frame 2, causing the screen window frame 2 to push downward on the wedge-shaped buckle plate 31 of the movable fastening device 3 until the screen window frame 2 is fully inserted into the annular groove 18. Under the elastic force of the second spring 33, the wedge-shaped buckle plate 31 moves upward and fastens onto the screen window frame 2, completing the installation. The first spring 16 and the third spring 182, located at the bottom of the annular groove 18, apply vertical and horizontal forces to the screen window frame 2 respectively, preventing the screen window frame 2 from shaking during ventilation when the airflow is too strong, thus preventing it from colliding with the casement window frame 1 and causing noise pollution. Simultaneously, the first spring 16 and the third spring 182 achieve a shock absorption effect, making the installation of the screen window frame 2 more stable.

[0033] In this embodiment, a wear-resistant pad 311 is provided on the surface of the wedge-shaped buckle plate 31 that is in contact with the screen window frame 2. The wear-resistant pad 311 is preferably made of ultra-high molecular weight polyethylene, which has a coefficient of friction of only 0.1-0.2, wear resistance 6 times that of carbon steel, a smooth surface, and impact resistance, thus improving the durability of the wedge-shaped buckle plate 31. The bottom edge of the screen window frame 2 that is close to the casement window frame 1 is set as an arc surface. When the screen window frame 2 is installed, the bottom edge set as an arc surface contacts the wedge-shaped buckle plate 31 of the movable fastening device 3. The arc surface facilitates downward pressure on the movable fastening device 3 to move downward, making it easier and less strenuous for the operator.

[0034] This invention features an "L"-shaped retaining strip on the inner side of the casement window frame that works in conjunction with a strip-shaped protrusion on the top edge of the screen window frame. A movable fastening device at the bottom of the casement window frame securely fixes the entire screen window frame to the inside. For disassembly, simply press down on the movable fastening device to easily remove the screen window frame. For installation, insert the strip-shaped protrusion on the top edge of the screen window frame into the "L"-shaped retaining strip on the inner side of the casement window frame, then press the screen window frame until the movable fastening device engages. The disassembly and installation of the screen window frame are simple and convenient, solving the problems of difficulty in disassembly and thorough cleaning. Furthermore, the springs located in the strip-shaped groove and the bottom of the annular groove provide stress control to the screen window frame after installation, preventing vibrations caused by airflow that could collide with the casement window frame and generate noise pollution.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detachable sliding screen for a casement window track, characterized in that: It includes a casement window frame (1) and a screen window frame (2), wherein the top of the inner side of the screen window frame (2) is provided with a screen roll box (21), and its top edge is a strip-shaped protrusion (22); The top of the inner side of the casement window frame (1) is provided with an "L"-shaped buckle strip (11); The "L"-shaped buckle (11) is fixedly installed on the casement window frame (1) in an inverted manner, and forms a strip groove (15) with the casement window frame (1). The strip groove (15) matches the strip protrusion (22) to ensure that the screen window frame (2) can be embedded in the casement window frame (1). The bottom of the casement window frame (1) is provided with at least two rectangular storage compartments (17), each rectangular storage compartment (17) is provided with a strip-shaped through hole (13) on the outside, and each rectangular storage compartment (17) is provided with a movable fastening device (3). Each of the aforementioned movable fastening devices (3) includes a second spring (33) and a spring plate (35), the spring plate (35) extending laterally outward and being fixedly connected to a push plate (32) after passing through the strip-shaped through hole (13) to ensure that the spring plate (35) and the push plate (32) can move vertically along the strip-shaped through hole (13) as a whole, and a wedge-shaped buckle plate (31) is fixedly connected to the push plate (32).

2. The detachable sliding screen for a casement window track according to claim 1, characterized in that: One end of the second spring (33) is fixedly connected to the spring plate (35), and the other end is fixedly connected to the bottom of the rectangular accommodating compartment (17).

3. The detachable sliding screen for a casement window track according to claim 1, characterized in that: The inner ring of the casement window frame (1) is provided with an annular groove (18) to ensure that the screen window frame (2) can be embedded in the casement window frame (1); The bottom of the annular groove (18) is provided with at least two spring grooves (181), which are located at positions corresponding to the bottom of the casement window frame (1).

4. The detachable sliding screen for a casement window track according to claim 3, characterized in that: Each of the spring grooves (181) is provided with a third spring (182), and the third spring (182) is fixedly connected to the bottom of the spring groove (181).

5. The detachable sliding screen for a casement window track according to claim 1, characterized in that: The bottom of the strip groove (15) is uniformly provided with a plurality of first springs (16).

6. The detachable sliding screen for a casement window track according to claim 1, characterized in that: A wear-resistant pad (311) is provided on the side surface of the wedge-shaped buckle plate (31) that is in contact with the screen window frame (2).

7. The detachable sliding screen for a casement window track according to claim 1, characterized in that: The bottom edge of the screen window frame (2) close to the casement window frame (1) is set as an arc surface.

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