Crime prevention screen door system
The slider lock mechanism with adjustable key positioning and reinforcement addresses the challenge of securing screen doors with size discrepancies, ensuring secure closure and resistance to forced entry.
Patent Information
- Application Number
- JP2023111057
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-06-20
- Publication Date
- 2025-01-08
AI Technical Summary
Existing security screen doors face challenges in accurate key attachment due to size differences between the screen door and window frames, leading to potential weakness and ease of intrusion, especially when using slider locks, and require reinforcement to maintain structural integrity.
A slider lock mechanism is designed with adjustable key positioning and a reinforcing structure that secures the screen door frame to the window frame, preventing bending and ensuring complete closure, even in the presence of size discrepancies.
The solution ensures secure closure and resistance to forced entry by adjusting key positioning and reinforcing the screen door frame, maintaining structural integrity and preventing unauthorized access.
Smart Images

Figure 2025001607000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a technology relating to security for screen doors attached to buildings such as houses and stores. [Background technology]
[0002] The main purpose of the screens attached to the window frames of buildings is to prevent insects and other pests from entering from the outside and to allow air to flow in. Therefore, when the screen door was in use, an intruder could easily enter from outside. To prevent this, there was a technology called burglarproof screen doors, which are screen doors that have bars added to traditional screen doors to prevent people from entering and have a unique lock attached. [Prior art documents] [Non-patent literature]
[0003] Mito 3142561 Summary of the Invention [Problem to be solved by the invention]
[0004] When replacing a regular screen door with one of these security screen doors, it is essential to accurately attach a lock to both the screen door and the window side to secure the screen door frame to the window frame, but screen doors come in many widths, making it difficult to attach the lock. The screen door frame on the side that is not fixed to the window frame increases the strength of the screen door frame by fitting into the overall window frame that is attached to the building itself, so if the lock is not attached in the correct position and the screen door is locked when it is not completely closed, the screen door frame that has come out of the overall window frame can easily be bent, raising concerns that the security effect will be reduced. In addition, when a slider lock is used as a key for a security screen door, there was a concern that the slider part of the slider lock attached to the screen door could be broken and bent toward the outside, making it possible to open and close the screen door. Furthermore, because the purpose of the slider lock is to prevent a sliding door on a rail from being slid left or right, it is not possible to secure the screen door frame to the window frame, and there was concern that the screen door itself could be easily destroyed by pulling it outside. If the overlap between the entire window frame and the screen was shallow, it was difficult to ensure the strength of the screen. Conventional security screens had these issues. [Means for solving the problem]
[0005] By allowing the security screen door to be locked with a slider lock, the position of the key can be adjusted, so that the screen door can be locked in a completely closed state even if the width of the screen door is different.
[0006] By fixing the slider of the slider lock to match the height of the lattice fixed to the screen door, the lattice and the slider can be made to interfere with each other, making it impossible to bend the slider toward the outside.
[0007] In addition, by hooking the key part of the slider lock onto the window frame, the screen frame and the window frame can be secured together.
[0008] When there is little overlap between the entire window frame and the frame of the screen and the strength of the screen cannot be ensured, the screen reinforcement part A attached to the screen is made to pass through the hole of the screen reinforcement part B attached to the entire window frame when the screen is closed. Effect of the Invention
[0009] The present invention is expected to provide the following effects.
[0010] By using a slider lock, even if the widths of the screen doors and windows are different, the position of the key can be adjusted so that the screen door can be locked in a completely closed position, even if the widths of the screen doors and window frames are different.
[0011] In addition, by making the slider of the slider lock interfere with the lattice, the slider cannot be bent toward the outside, thereby maintaining security.
[0012] Since the screen frame and the window frame are fixed with a slider lock, even if an intruder tries to destroy the screen frame by pulling the center part of the frame strongly toward the outside, the screen frame cannot be easily destroyed. Furthermore, since there is no need to attach anything to the window frame, there is no need to modify the window frame when replacing the screen, for example.
[0013] When the screen door is closed, by passing screen door reinforcement part A through the hole in screen door reinforcement part B, even if the screen door is bent toward the outside or inside, the hook part will get caught and the screen door will be difficult to remove. [Brief description of the drawings]
[0014] [Figure 1] FIG. 1 is a front view of the entire window of the present invention. [Diagram 2] FIG. 2 is an enlarged view of a slider lock portion of FIG. 1 according to the present invention. [Diagram 3] FIG. 3 is a cross-sectional view of FIG. 2 of the present invention. [Figure 4] FIG. 2 is an enlarged cross-sectional view of the entire window frame of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0015] The security screen system according to the present invention will be described in detail below with reference to the drawings.
[0016] As shown in Figure 1, 3. Attach a lattice to the screen frame at a distance that makes it difficult for intruders to get in. 4. Fix the slider part of the slider lock to the screen at the same height as part of the lattice. As shown in Figures 2 and 3, move the key part of the slider lock (8) to the left on the slider, and then use the window frame fixing bracket of the slider lock (9) to clamp and secure the slider attached to the screen frame and the window frame (2). As shown in Figure 3, the lattice prevents the slider from being bent toward the outside. As shown in Figure 4, when the screen door is closed, 10. Screen door reinforcement bracket A attached to the screen door frame passes through a hole in 11. Screen door reinforcement bracket B attached to the entire window frame. When the screen door is pulled strongly to the outside, 12. The hook part gets caught in the hole in Screen door reinforcement bracket B, making it impossible to remove the screen door easily. [Explanation of symbols]
[0017] 1 Entire window frame 2. Window frames 3. Screen door frame 4 Intrusion prevention grid 5 Slider part of slider lock 6. Glass 7 net 8 Slider lock key 9 Slider Lock Window Frame Fixtures 10 Screen door reinforcement bracket A 11 Screen door reinforcement bracket B 12 Hook part
Claims
1. A method for locking a screen door with a lattice attached thereto as a crime prevention screen door using a slider lock
2. A structure that installs the slider part of a security screen door that is locked with a slider lock so that it is at the same height as the bars, preventing the slider part from being damaged.
3. A structure that allows the slider lock attached to the security screen to be fixed to the window frame and the screen frame.
4. The structure strengthens the screen by passing the part fixed to the screen frame through the part attached to the entire window frame.