Sliding Window Security Bar With Tamper-Proof Partial Opening
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Solution Overview
Problem
Existing window and door security devices are not aesthetically pleasing, require installation with screws that damage the structure, are not portable, and do not allow partial opening while providing security, and are easily defeated by unauthorized access.
Innovation Solution
A telescoping bar with adjustable length and a lock mechanism that forms a connector pair with a plate, allowing secure attachment to a window or door without drilling, enabling partial opening and tamper-proof removal only by authorized users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If permanent security bars are installed by screwing into the window sash or frame, then security protection is provided, but the window or frame is damaged and the device is not portable
Solution Approach 1:
The security device is divided into separate components: a security bar and a mounting bracket. The bracket is attached to the window frame without screws (using adhesive or pressure mounting), while the bar can be independently installed and removed. This segmentation allows the security function to be provided without permanently damaging the window structure.
Solution Approach 2:
The security bar is designed to be removable and reusable. After providing security protection, the bar can be easily removed from the window and stored or relocated to another window, allowing the security device to be recovered and reused rather than discarded or permanently installed.
2Reliability
If permanent security bars are installed, then security protection is provided, but the device is not aesthetically pleasing and not portable
Solution Approach 1:
The security device transitions from a static permanent installation to a dynamic removable system. The mounting bracket allows the security bar to be easily attached and detached, providing adaptability for different windows and locations while maintaining aesthetic flexibility since the device can be stored when not in use or configured to match different window styles.
Solution Approach 2:
The security device is designed with universal mounting brackets that can accommodate different window frame types and sizes. The adjustable bar length and standardized mounting interface allow the same device to be used across multiple windows and even different building locations, enhancing portability and aesthetic adaptability.
3Reliability
If break-away security bars are used, then some security protection is provided, but they are easily defeated and removed from the outside
Solution Approach 1:
The mounting bracket serves as an intermediary between the security bar and the window frame. The bracket contains the locking mechanism and security features on the interior side, while presenting a simple exterior mounting surface. This intermediary design protects the complex locking mechanism from external access while maintaining strong security protection.
4Reliability
If security devices are permanently installed, then security protection is provided, but the window cannot be fully opened for ventilation
Solution Approach 1:
The security bar length is adjustable to dynamically adapt to different window opening requirements. When full ventilation is needed, the bar can be repositioned or removed entirely since the mounting system is reversible. When security is prioritized, the bar is positioned to block full opening while allowing controlled ventilation through smaller gaps.
Data Source
AI summary
A device for securing sliding windows and doors includes a telescoping bar and a plate. An end of the bar and the plate together form a connector pair that couples the bar end to the plate in one of a separable orientation and an inseparable orientation according to a relative angle between the bar end and the plate. The connector pair allows the bar to be separated from the plate in the separable orientation when the relative angle is a first angle, and the connector pair prevents the bar end being separated from the plate in the inseparable orientation when the relative angle is a second angle. A lock in the locked position physically prevents the relative angle between the bar end and the plate being changed from the second angle to the first angle. A T-bar or side-wing may prevent unlocking when the window or door is open.