Door Security System with External Release Mechanism
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Solution Overview
Problem
Existing door security systems are ineffective in preventing unauthorized entry when doors open outwardly and often violate fire codes, as they cannot be disengaged from outside the room, limiting their use in environments like schools and offices.
Innovation Solution
A door security system with a security apparatus that includes a floor-engaging portion and a door-blocking portion, a release mechanism, and an attachment assembly, allowing the door to be blocked from opening into a space while being easily removable from outside, thus complying with fire codes and functioning with both inward and outward-opening doors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security devices are installed to prevent door opening, then unauthorized entry is delayed or prevented, but the devices cannot be disengaged from outside and violate fire codes
Solution Approach 1:
The security system is divided into two separate components: a security apparatus installed inside the room that blocks the door, and a release mechanism installed outside the room that can disengage the security apparatus. This segmentation allows the security function to be maintained while enabling emergency release from outside, thus complying with fire codes.
Solution Approach 2:
The patent introduces an intermediary release mechanism that acts as a mediator between the security apparatus and the outside environment. This release mechanism transmits force through the door via a rod to disengage the security apparatus, allowing external control without compromising the security function when engaged.
2Reliability
If security devices block the door from opening, then unauthorized entry is prevented, but the devices cannot operate effectively when the door opens outwardly
Solution Approach 1:
The security apparatus is designed with a dynamic blocking portion that can be positioned at different locations along the door's path. The blocking portion can be adjusted or repositioned to effectively block both inward-opening and outward-opening doors, making the system adaptable to different door configurations and opening directions.
3Stability of the object's composition
If floor-engaging portions are used to secure the security apparatus, then the device is retained in place, but the apparatus cannot be easily removed from outside
Solution Approach 1:
The system separates the retention function (floor-engaging portion securing the apparatus inside the room) from the release function (release mechanism outside the room). This allows the apparatus to be securely retained during normal operation while enabling easy external removal when needed for emergency egress.
Solution Approach 2:
The release mechanism acts as an intermediary that transmits disengagement force through the door structure to release the floor-engaging portion, allowing external operation without requiring direct access to the retention mechanism itself.
Data Source
AI summary
A door security system is provided which is used to prevent a door, which separates first and second spaces, from opening. The door security system includes a security apparatus which is configured to be engaged with the floor within a first space. If the door is to be opened into the first space, the security apparatus blocks the door from opening into the first space. If the door is to be opened into the second space, an attachment assembly of the door security system acts in concert with the attachment assembly to block the door from opening into the second space. The door security system further includes a release mechanism which can be manipulated from the second space to disengage the security apparatus within the first space, thereby allowing for the door to be opened into either the first or second spaces, as appropriate.