Hinge Flange Ledge Engagement for Door Panel Anchoring
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Solution Overview
Problem
Hinged closures, such as doors and windows, lack effective reinforcement against forces that attempt to pull the panel away from the hinge jamb, particularly under impacts or blasts, as existing pins only resist forces within their plane of projection.
Innovation Solution
A closure system featuring a flange and ledge configuration that engages when sufficient force is applied, providing enhanced anchoring by bringing the flange into contact with the ledge, which is integrated into a projecting ridge of the hinge jamb, and includes a lock mechanism to oppose forces directed to pull the panel away from the strike jamb.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional pins are used for hinge-side engagement, then the device complexity is low, but the strength against forces pulling the panel away from the hinge jamb is insufficient
Solution Approach 1:
The patent transitions from traditional pins that project within the plane of the panel to a flange configuration that engages with a ledge in a different spatial dimension. The flange extends perpendicular to the panel surface and engages with a ledge on the hinge jamb, creating engagement in the third dimension (depth direction) rather than only within the panel plane. This dimensional change enables resistance to forces pulling the panel away from the hinge jamb.
Solution Approach 2:
The engagement system is designed to be dynamic rather than static. The flange and ledge are positioned such that they engage only when forces attempt to pull the panel away from the hinge jamb. During normal operation, the flange does not contact the ledge, allowing free hinge movement. When abnormal forces are applied, the flange is forced into engagement with the ledge, providing strength only when needed.
2Strength
If a flange and ledge engagement system is implemented, then the strength against pulling forces is improved, but the ease of operation may be reduced due to potential obstruction of swinging motion
Solution Approach 1:
The engagement system is designed to be dynamic rather than static. The flange and ledge are positioned such that they engage only when forces attempt to pull the panel away from the hinge jamb. During normal operation, the flange does not contact the ledge, allowing free hinge movement. When abnormal forces are applied, the flange is forced into engagement with the ledge, providing strength only when needed.
Solution Approach 2:
The flange is pre-positioned in a retracted state during normal operation, allowing free swinging motion. The engagement with the ledge is activated only when and where needed (when pulling forces are applied), rather than being continuously engaged. This preliminary positioning ensures ease of operation under normal conditions while maintaining strength capability when required.
3Strength
If the flange and ledge are positioned to engage under normal conditions, then the strength is maximized, but the device obstructs free swinging motion
Solution Approach 1:
The engagement system is designed to be dynamic rather than static. The flange and ledge are positioned such that they engage only when forces attempt to pull the panel away from the hinge jamb. During normal operation, the flange does not contact the ledge, allowing free hinge movement. When abnormal forces are applied, the flange is forced into engagement with the ledge, providing strength only when needed.
Solution Approach 2:
The flange is pre-positioned in a retracted state during normal operation, allowing free swinging motion. The engagement with the ledge is activated only when and where needed (when pulling forces are applied), rather than being continuously engaged. This preliminary positioning ensures ease of operation under normal conditions while maintaining strength capability when required.
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~4B
AI summary
A door or window assembly includes an opening bounded by a frame including a hinge jamb (12). A panel (18) is hung relative to the hinge jamb via a hinge arrangement (20) so as to swing between an open position and a closed position. An engagement configuration includes a ledge (22) located in fixed relation to the hinge jamb, and a flange (24) rigidly associated with the panel. The engagement configuration allows me panel to swing freely between open and closed positions. In the closed position, the flange (24) is brought into facing relation with the ledge (22) such that force directed to displace the panel (18) within the plane of closure away from the hinge jamb (12) acts to bring the flange into engagement with the ledge.