Self-Positioning Draft Blocker for Door Energy Sealing
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Solution Overview
Problem
Existing draft blockers require frequent relocation and adjustment with each door opening and closing, leading to user frustration and abandonment due to the labor-intensive process, as they fail to maintain effective energy sealing over time as door thresholds age and settle.
Innovation Solution
A draft blocker device with an air stopper detachably coupled to the door and floor, featuring a frame attachment to secure it to the door frame and a handle attachment with a lengthwise adjustable coupler that removably secures to the doorknob, allowing the air stopper to self-position as the door opens and closes, using a hook-and-loop fastener and adhesive strip for secure placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a draft blocker is installed to block air flow through the door gap, then energy sealing is improved, but the device requires frequent manual relocation and adjustment with each door operation
Solution Approach 1:
The draft blocker device is designed to automatically return to its sealing position after door operation without manual intervention. The spring mechanism provides self-service by automatically pushing the draft blocker back into place, eliminating the need for users to manually relocate and adjust the device with each door opening and closing.
Solution Approach 2:
The draft blocker incorporates a spring mechanism that enables dynamic movement between a retracted position (when door is open) and a sealing position (when door is closed). This dynamic system automatically adapts to door operations, maintaining energy sealing without requiring manual adjustment while allowing the blocker to move freely as needed.
2Loss of energy
If a draft blocker is securely attached to prevent movement, then energy sealing is maintained, but the device cannot self-adjust with door operation
Solution Approach 1:
The spring mechanism creates a dynamic attachment system that maintains secure connection during normal operation while allowing automatic adjustment. The spring provides continuous force to keep the draft blocker in the sealing position, ensuring energy efficiency, while simultaneously enabling the blocker to move and reposition automatically in response to door operations without manual intervention.
3Ease of manufacture
If the draft blocker remains stationary in position, then installation is simple, but it cannot accommodate door threshold aging and settling
Solution Approach 1:
The spring mechanism transforms the stationary draft blocker into a dynamic system that automatically compensates for threshold changes. As door thresholds age and settle, the spring allows the draft blocker to adjust its position automatically, maintaining reliable sealing effectiveness over time while requiring no additional installation complexity or user intervention.
Solution Approach 2:
The device performs self-adjustment in response to threshold aging and settling through the spring mechanism. This self-service capability maintains sealing reliability over time without requiring manual repositioning or adjustment by users, while the installation process remains simple and straightforward.
4Adaptability or versatility
If the draft blocker is made adjustable and movable, then it can adapt to door operations, but it requires frequent manual repositioning
Solution Approach 1:
The spring mechanism enables the draft blocker to automatically return to its sealing position after door operation, providing self-service that eliminates manual repositioning. The device adapts to door operations through automatic movement driven by the spring, maintaining adaptability while removing the burden of frequent manual adjustment from the user.
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
The device effectively blocks air flow through the door gap without needing manual repositioning, maintaining energy efficiency by self-adjusting with door operation and ensuring consistent sealing, reducing user effort and energy loss.
Implementation Method 1
the top of the rear side of the air stopper may include an adhesive strip that retains the air stopper to the door
Implementation Method 2
the mounting tab detachably couples to the door frame via a hook-and-loop fastener
Data Source
AI summary
A draft blocker device for a door that also includes an air stopper may be included in certain embodiments of the present disclosure. A frame attachment that is fastened to a first end of the air stopper might also be included in certain embodiments. In certain implementations, there is additionally a handle attachment that is coupled to a second end of the air stopper. This handle attachment may contain a handle coupler. Adjustability along the longitudinal axis of the handle attachment is possible in certain implementations. A hook that can be detached from its attachment to a doorknob might serve as the handle coupler in various implementations of the invention.