Slot-Shaped Hole Security Device for Prying Resistance
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Solution Overview
Problem
Existing door and window security systems are inadequate in preventing unintentional opening from the outside, particularly against break-ins, as they can be easily levered open using tools, and retrofitting with effective security devices is complicated and costly.
Innovation Solution
A door or window security device featuring a base body with a slot-shaped hole and a fastening element with a head and shaft, allowing for easy attachment to the inside of the frame, which inhibits opening movements and provides secure fastening, while being easy to install and remove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing locking mechanisms are used to secure doors or windows, then basic locking function is provided, but protection against break-ins is inadequate as tools can be attached to the gap between leaf/sash and frame to lever open
Solution Approach 1:
The security device is divided into separate components: a base body that attaches to the frame, a securing element that extends to block the gap, and a fastening mechanism. This segmentation allows the system to provide effective burglary protection through multiple blocking surfaces while maintaining simplicity and ease of installation.
Solution Approach 2:
The base body acts as an intermediary element mounted on the frame, creating additional blocking surfaces between the leaf/sash and frame. This intermediary structure prevents direct tool attachment to the gap, effectively countering prying attacks without requiring complex multi-part systems.
2Reliability
If complex multi-part security systems are used to prevent prying open, then effective burglary protection is achieved, but the systems are expensive and complex to assemble
Solution Approach 1:
The base body integrates multiple functions into a single component: it provides structural mounting on the frame, creates blocking surfaces to prevent prying, and incorporates fastening mechanisms. This merging of functions reduces the number of parts and simplifies assembly while maintaining effective burglary protection.
Solution Approach 2:
The base body is designed as a universal component that can be mounted on various frame types and provides multiple security functions simultaneously (blocking prying tools, securing the leaf/sash, preventing lifting). This multi-functionality reduces overall system complexity and assembly requirements.
3Reliability
If security devices are installed on already installed doors or windows, then retrofitting protection is achieved, but installation is difficult and time-consuming
Solution Approach 1:
The base body is pre-designed with integrated fastening mechanisms and mounting features that simplify installation. The component is prepared in advance with all necessary attachment elements, allowing quick mounting on existing frames without requiring complex preparation or multiple assembly steps.
Solution Approach 2:
The security device is extracted as a separate, self-contained unit that can be independently mounted on existing frames. The base body is removed from any complex assembly and stands as an individual retrofit component, enabling easy installation on already installed doors or windows without disassembling existing structures.
4Reliability
If blocking surfaces are mounted on the frame to prevent prying, then protection against levering open is improved, but retrofitting requires greater effort
Solution Approach 1:
The blocking surfaces are merged with the base body as an integrated structure rather than separate components. This combination eliminates the need for separate mounting operations for blocking surfaces, reducing retrofitting effort while maintaining effective protection against prying attacks.
Solution Approach 2:
The base body serves as an intermediary mounting structure that simultaneously provides both the blocking surfaces and the attachment interface to the frame. This intermediary design consolidates multiple functions into one component, making retrofitting easier while ensuring effective protection against levering open.
Data Source
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AI summary
A door or window security device (10) for securing a door (78) or a window (12) against burglaries comprises a base body (30) in which a hole (32) of a certain dimension (34) and a bulge (36) of the hole (32) are formed, which is slot-shaped with two boundary lines (38, 40) that are approximately parallel to each other at a certain distance (42) from each other and in which the distance (42) of the boundary lines (38, 40) is smaller than the dimension (34) of the hole (32) measured in the same direction.