Spring-Biased Seal Bar for Concealing Door Swing Gaps
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Solution Overview
Problem
Hidden doors struggle to conceal the entryway due to the necessary gap required for door movement, which can expose the door when light passes through.
Innovation Solution
A swing gap cover device comprising a base, a seal bar, and springs, where the seal bar contacts the top edge of the door and is biased by springs to cover the gap, with tensioning devices to limit the seal bar's extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gap is provided between the door and entryway edges to allow door movement, then the door can move freely, but light can pass through the gap and expose the hidden door
Solution Approach 1:
A swing gap cover device is introduced as an intermediary element between the door and the entryway frame. The device includes a seal bar that can swing between a retracted position (allowing door movement) and an extended position (covering the gap to block light). This intermediary mechanism resolves the contradiction by providing both movement capability and light blocking functionality through a single integrated component.
Solution Approach 2:
The seal bar is designed to be movable rather than fixed, allowing it to dynamically adjust its position. When the door is closed, the seal bar extends to cover the gap and block light. When the door opens, the seal bar retracts to allow movement. This dynamic behavior enables the system to adapt to different states (closed/open) and resolve the contradiction between maintaining concealment and allowing operation.
2Object-affected harmful factors
If the seal bar is extended to cover the gap, then light exposure is prevented, but the door movement may be restricted
Solution Approach 1:
The seal bar's position is made dynamic through spring biasing and tensioning mechanisms. The spring urges the seal bar to extend and cover the gap when the door is closed, blocking light. When the door needs to open, the tensioning device allows the seal bar to retract, enabling movement. This dynamic positioning resolves the contradiction by automatically adjusting the seal bar's state based on door position.
Solution Approach 2:
The system incorporates feedback through the interaction between the seal bar, spring, and tensioning device. The spring provides continuous force to maintain gap coverage, while the tensioning device responds to the door's position and provides appropriate resistance. This feedback mechanism ensures the seal bar automatically adjusts its position to balance light blocking and door movement requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively conceals the swing gap between the door and the entryway, preventing light from exposing the hidden door, while allowing the door to move freely.
Implementation Method 1
The one or more springs are coupled to the base and the seal bar. The one or more springs are configured to bias the seal bar toward an extended position and urging toward a retracted position.
Implementation Method 2
the one or more tensioning devices configured to limit a maximum distance between the base and the seal bar
Data Source
AI summary
Various implementations include a swing gap cover device. The device includes a base, a seal bar, and one or more springs. The seal bar is configured to contact a top edge of a door hingedly coupled to the door jamb. The one or more springs are coupled to the base and the seal bar. The one or more springs are configured to bias the seal bar toward an extended position and urgable toward a retracted position. The seal bar is further from the base in the extended position than it is in the retracted position.