Multi-Panel Door System Astragal Securement
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Solution Overview
Problem
Existing multi-panel door systems face difficulties in panel replacement due to the cumbersome process of removing fixed stops and securing members, which are often aesthetically unpleasing and require access through the door frame.
Innovation Solution
A multi-panel door system design where a fixed panel is secured to the astragal using securement members driven through its middle section, allowing for easy replacement by accessing these members from the opposite side, and an active panel is pivotally coupled to the astragal using hinges and securement members, aligning panels within a single plane for efficient installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed stops are used to secure panels to the door frame, then the panels are securely held in their recessed positions, but the replacement of panels becomes difficult and cumbersome
Solution Approach 1:
The door system is divided into modular components: the door frame, multiple panels (fixed and active), and removable securement members. This segmentation allows individual panels to be independently removed and replaced without affecting the entire door assembly, resolving the contradiction between secure installation and ease of replacement
Solution Approach 2:
The securement system transitions from fixed, permanent stops to dynamic, removable securement members that can be easily inserted and removed. This allows the panel securing mechanism to adapt between providing strong retention during normal use and enabling quick replacement when needed
2Ease of repair
If securement members are driven through the middle section of the astragal, then panel replacement is facilitated by accessing members from the opposite side, but the structural integrity of the astragal must be maintained
Solution Approach 1:
Hinge support plates are introduced as intermediary elements between the securement members and the astragal. These plates distribute the loads and stresses from the securement members across a larger area of the astragal, preventing localized weakening while still allowing easy panel removal through the middle section
3Adaptability or versatility
If multiple door panels are used in the door system, then functionality and design flexibility are improved, but the alignment of panels within a single plane becomes challenging
Solution Approach 1:
The door frame incorporates universal mounting features and standardized securement interfaces that work consistently across all panels. This universality ensures that each panel, regardless of its specific function or position, aligns with the others within a single plane, maintaining precision while supporting diverse panel configurations
Data Source
AI summary
According to some embodiments, a multi-panel door system includes a fixed panel and an active panel. Both panels are secured to the astragal of the door frame by securement members driven into and through hinges connected to the active panel, through the astragal, and into the fixed panel. The securement members are driven through a middle portion of the astragal stem in order to align the fixed and active panels in a recessed position with respect to the door frame. The fixed panel and the active panel are coplanar. Hinge support plates are placed between the hinges and the astragal and communicate forces transmitted through the securement members into deeper portions of the astragal.