Child lock structure of rollback screen window

Abstract

The utility model discloses a child lock structure of a rollback screen window in the field of screen windows, which comprises a screen window bottom frame and screen window side frames arranged on two sides of the screen window bottom frame, guide rail plates are fixedly connected inside the screen window side frames, bottom butt joint buckle plates are fixedly connected to the bottoms of the guide rail plates, buckle holes are arranged on the bottom butt joint buckle plates, and the bottom butt joint buckle plates are fixedly connected with the bottom butt joint buckle plates. End guiding sliding blocks are connected to the guide rail plates in a sliding mode, and an opening and closing handle is fixedly installed between the two end guiding sliding blocks. The rotary lock body is additionally arranged, after a rolled yarn is pulled down, the rotary lock body is rotated to enable the two locking supporting parts to abut against the opening and closing pushing hand plate, the opening and closing pushing hand plate is limited, the function of a child lock is achieved, opening by children is avoided, safety is higher, the spring bolt plate is always attached to the guide rail plate under the action of the spring, and the locking effect is good. And hovering at any position without large external force can be ensured, and the device is more practical.

Description

Technical Field

[0001] This utility model relates to the field of window screens, specifically a child lock structure for a retractable window screen. Background Technology

[0002] Existing screen windows mostly rely on a single elastic locking mechanism for locking after closing. Children can easily open them by pressing down on the locking mechanism, posing a safety hazard. Furthermore, during pushing and pulling, most screen windows rely on the friction of a track component for suspension, lacking auxiliary support and thus offering insufficient stability. Therefore, those skilled in the art have provided a child lock structure for retractable screen windows to address the problems mentioned in the background. Utility Model Content

[0003] The purpose of this invention is to provide a child lock structure for a retractable screen window to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A child lock structure for a retractable screen window includes a bottom frame of the screen window and side frames of the screen window on both sides of the bottom frame. A guide rail plate is fixedly connected inside the side frames of the screen window, and a bottom mating buckle plate is fixedly connected to the bottom of the guide rail plate. The bottom mating buckle plate has buckle holes. An end guide slider is slidably connected to the guide rail plate. An opening and closing handle is fixedly installed between the two end guide sliders. The opening and closing handle has a guide groove. A locking tongue plate is movably set inside the end guide slider to cooperate with the buckle holes to achieve locking and unlocking. The locking tongue plate is slidably connected to the guide groove. A connecting block is fixedly connected to one side of the locking tongue plate. A guide slide rod is movably connected to the middle of the two connecting blocks. Limit ends are fixedly connected to both ends of the guide slide rod inside the connecting blocks. A spring is clamped between the connecting blocks around the guide slide rod.

[0006] The upper part of the opening and closing handle has a latch clearance hole, and a latch plate is installed inside the latch clearance hole. Two pins are integrally formed on one side wall of the latch plate and inserted into the limiting pins. Two opening and closing push plates are slidably arranged inside the latch plate around the two limiting pins. The opening and closing push plates are fixedly connected to the connecting block. A rotating lock body is movably arranged in the middle of the latch plate. A rotating groove is opened in the middle of the rotating lock body. The two ends of the rotating lock body are locking support parts, and a guide arc part is integrally formed on the locking support part.

[0007] As a further embodiment of this invention: a bottom connecting plate is connected inside the bottom frame of the screen window, and a clamping groove for fixing the rolled-up yarn is provided above the opening and closing handle. The bottom connecting plate can be fixedly connected to the inside of the bottom frame of the screen window.

[0008] As a further embodiment of this utility model: the lock plate is engraved with a lock body mark on the periphery of the rotating lock body, and the end of the opening and closing push handle plate is an arc-shaped hand support.

[0009] As a further embodiment of this utility model: a fixed buckle plate is provided on the other side of the buckle plate on the opening and closing handle, and an auxiliary pusher plate is movably provided inside the fixed buckle plate. The fixed buckle plate and the buckle plate are connected by screws.

[0010] This utility model, by adding a rotating lock body, allows the two locking support parts to press against the opening and closing push plate after the yarn roll is pulled down, thus limiting the opening and closing push plate and acting as a child lock to prevent children from opening it, making it safer. Moreover, the locking tongue plate is always in close contact with the guide rail plate under the action of the spring, which can ensure that it can be suspended in any position without being subjected to large external forces, making it more practical. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a rear view structural diagram of the present invention;

[0013] Figure 3 This is an exploded view of the present invention;

[0014] Figure 4 This is an enlarged view of the rotary lock body in this utility model;

[0015] Figure 5 This is a schematic diagram of the rotary lock body in this utility model.

[0016] In the diagram: 1. Side frame of the screen window; 2. Bottom frame of the screen window; 3. Opening and closing handle; 301. Locking buckle clearance hole; 302. Screen clamping groove; 303. Guide groove hole; 4. Fixed buckle plate; 5. Auxiliary push plate; 6. Locking buckle plate; 601. Rotary lock body; 6011. Rotary groove; 6012. Locking support part; 6013. Guide arc part; 602. Lock body marking; 603. Limiting post; 7. Opening and closing push plate; 701. Movable support hole; 702. Hand handle; 8. Guide rail plate; 9. Bottom mating buckle plate; 901. Buckle hole; 10. Bottom connecting plate; 11. Guide slide rod; 12. Spring; 13. Connecting block; 14. Lock tongue plate; 15. End guide slider. Detailed Implementation

[0017] Please see Figures 1-5A child lock structure for a retractable screen window includes a bottom frame 2 of the screen window and side frames 1 of the screen window disposed on both sides of the bottom frame 2. A guide rail plate 8 is fixedly connected inside the side frame 1 of the screen window. A bottom mating plate 9 is fixedly connected to the bottom of the guide rail plate 8. A buckle hole 901 is opened on the bottom mating plate 9. An end guide slider 15 is slidably connected to the guide rail plate 8. An opening and closing handle 3 is fixedly installed between the two end guide sliders 15. A guide groove 303 is opened inside the opening and closing handle 3. A locking tongue plate 14 is movably disposed inside the end guide slider 15, which cooperates with the buckle hole 901 to achieve locking and unlocking. The locking tongue plate 14 is slidably connected to the guide groove. A connecting block 13 is fixedly connected to one side of the locking tongue plate 14. A guide slide rod 11 is movably connected to the middle of the two connecting blocks 13. Limit ends are fixedly connected to both ends of the guide slide rod 11 inside the connecting blocks 13. A spring 12 is clamped and disposed on the periphery of the guide slide rod 11 between the connecting blocks 13.

[0018] The opening and closing handle 3 has a locking avoidance hole 301 in the middle. A locking plate 6 is installed inside the locking avoidance hole. Two pins are integrally formed on one side wall of the locking plate 6 and inserted into the limiting post 603. Two opening and closing push plates 7 are slidably arranged inside the locking plate 6 around the two limiting posts 603. The opening and closing push plates 7 are fixedly connected to the connecting block 13. A rotating lock body 601 is movably arranged in the middle of the locking plate 6. A rotating groove 6011 is opened in the middle of the rotating lock body 601. The two ends of the rotating lock body 601 are locking support parts 6012. A guide arc part 6013 is integrally formed on the locking support part 6012.

[0019] By adopting the above technical solution, when the opening and closing handle 3 is pulled to the lowest position, the connecting block 13 and the locking tongue plate 14 can be pushed away from each other by the action of the spring 12. The locking tongue plate 14 is inserted into the buckle hole 901 on the bottom docking plate 9 to achieve a limit lock. When opening, the two opening and closing push handle plates 7 can be pressed down to push the connecting block 13 and the locking tongue plate 14 out of the buckle hole 901, thereby unlocking and making it easy to open. By rotating the lock body 601, the two locking support parts 6012 can be pressed against the opening and closing push handle plate 7 to limit the opening and closing push handle plate 7, which can act as a child lock to prevent children from opening it, making it safer. Moreover, under the action of the spring 12, the locking tongue plate 14 is always in close contact with the guide rail plate 8, ensuring that it can be suspended in any position without the action of a large external force, making it more practical.

[0020] The bottom frame 2 of the screen window is connected to a bottom connecting plate 10, which is placed inside the bottom frame 2 of the screen window. The opening and closing handle 3 is made of profile material, which is easy to manufacture, and a yarn clamping groove 302 for fixing the rolled yarn is provided on its top.

[0021] Among them, the lock plate 6 has a lock body mark 602 engraved on the periphery of the rotating lock body 601, which can mark the locked position and the unlocked position for easy identification. The end of the opening and closing push plate 7 is an arc-shaped hand support 702.

[0022] In this embodiment, a fixed buckle plate 4 is provided on the other side of the buckle plate 6 on the opening and closing handle 3. An auxiliary pusher plate 5 is movably provided inside the fixed buckle plate 4. The fixed buckle plate 4 and the buckle plate 6 are connected by screws. The auxiliary pusher plate 5 can be opened and closed from the back, making it convenient to use from both sides at the same time.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A child lock structure for a retractable screen window, comprising a bottom frame (2) of the screen window and side frames (1) of the screen window disposed on both sides of the bottom frame (2), characterized in that: The side frame (1) of the screen window is fixedly connected to a guide rail plate (8). The bottom of the guide rail plate (8) is fixedly connected to a bottom mating buckle plate (9). The bottom mating buckle plate (9) has a buckle hole (901). The guide rail plate (8) is slidably connected to an end guide slider (15). An opening and closing handle (3) is fixedly installed between the two end guide sliders (15). The opening and closing handle (3) has a guide groove hole (303) inside. The end guide slider (15) is movable inside. There is a locking tongue plate (14) that cooperates with the buckle hole (901) to achieve locking and separation. The locking tongue plate (14) is slidably connected to the guide slide groove. A connecting block (13) is fixedly connected to one side of the locking tongue plate (14). A guide slide rod (11) is movably connected in the middle of the two connecting blocks (13). The two ends of the guide slide rod (11) are fixedly connected to the limit end inside the connecting block (13). A spring (12) is clamped between the connecting blocks (13) on the periphery of the guide slide rod (11). The opening and closing handle (3) has a locking avoidance hole (301) in the middle. A locking plate (6) is installed inside the locking avoidance hole. Two pins inserted into the limiting post (603) are integrally formed on one side wall of the locking plate (6). Two opening and closing push plates (7) are slidably arranged inside the locking plate (6) around the two limiting posts (603). The opening and closing push plates (7) are fixedly connected to the connecting block (13). A rotating lock body (601) is movably arranged in the middle of the locking plate (6). A rotating groove (6011) is opened in the middle of the rotating lock body (601). The two ends of the rotating lock body (601) are locking support parts (6012). A guide arc part (6013) is integrally formed on the locking support part (6012).

2. The child lock structure for a retractable screen window according to claim 1, characterized in that: The bottom frame (2) of the screen window is connected to a bottom connecting plate (10), and a yarn clamping groove (302) for fixing the rolled yarn is provided above the opening and closing handle (3).

3. The child lock structure for a retractable screen window according to claim 1, characterized in that: The lock plate (6) is engraved with a lock body mark (602) around the rotating lock body (601), and the end of the opening and closing push plate (7) is an arc-shaped hand support (702).

4. The child lock structure for a retractable screen window according to claim 1, characterized in that: The opening and closing handle (3) is provided with a fixed buckle plate (4) on the other side of the buckle plate (6). An auxiliary pusher plate (5) is movably provided inside the fixed buckle plate (4). The fixed buckle plate (4) and the buckle plate (6) are connected by screws.

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