Pivoting Security Strip for Door Floor Gap Protection
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Solution Overview
Problem
Existing burglary protection systems for doors often neglect the underside, making it vulnerable to unauthorized access, as conventional locks and seals can be easily bypassed or compromised by tools like wires or jacks.
Innovation Solution
A mechanical burglary protection device featuring a pivoting security strip that closes the gap between the door and the floor, which can be fixed in a vertical position to prevent penetration, incorporating a trigger mechanism that automatically activates when the door is closed and retracts when opened, ensuring complete protection without obstructing authorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a drop-down seal is present to protect the underside of the door, then weather protection is improved, but it can be easily lifted using a lever tool
Solution Approach 1:
The security strip transitions from a static seal to a dynamic pivoting mechanism that rotates between a raised storage position and a lowered security position. This dynamic transformation allows the same component to provide both weather sealing and burglar protection, resolving the contradiction between ease of lifting and security reliability.
Solution Approach 2:
The security strip is divided into functional segments including a pivotable main body, a trigger mechanism, and a locking element. This segmentation allows the system to independently control the sealing function and the security function, enabling the seal to remain secure during normal operation while still providing weather protection.
2Reliability
If multiple locking points are used on the door, then burglar protection is improved, but the underside of the door remains vulnerable
Solution Approach 1:
The invention addresses the vulnerability of the underside by introducing a protection mechanism that operates in a different spatial dimension - a pivoting strip that moves vertically to seal the gap between the door and floor. This dimensional approach complements the horizontal locking points, providing comprehensive protection across multiple axes.
3Reliability
If a security strip is lowered to close the gap, then burglar protection is improved, but it may obstruct authorized access
Solution Approach 1:
The security strip system is self-activating through a trigger mechanism that automatically lowers the strip when the door is closed and raises it when the door is opened. This self-service operation eliminates the need for manual intervention, ensuring that authorized users experience no obstruction while maintaining continuous security protection.
Solution Approach 2:
The security strip operates periodically, alternating between the lowered security position during door-closed periods and the raised storage position during door-open periods. This periodic action ensures protection is provided only when needed, maintaining accessibility during normal use while ensuring security when the door is closed.
Data Source
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AI summary
An intruder protection device for a door has a stable securing strip (4) for fastening to a door leaf (F) and for sealing a gap between the door leaf (F) and a floor (1). The securing strip (4) can be moved from a raised position into a securing position and can be fixed in said securing position, the securing strip (4) sealing a gap between the door leaf (F) and a floor (1) when in the securing position. The device according to the invention provides effective and inexpensive mechanical intruder protection for doors.