Bulb Seals for Multi-Directional Door Panel Sealing
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Solution Overview
Problem
Existing door seals fail to provide effective sealing in multiple directions and are often difficult to install and replace, especially when they need to engage with various surfaces such as doorjambs, floors, and walls.
Innovation Solution
A flexible sheet of material with inward-turned longitudinal edges forming a bulging seal geometry, which can engage surfaces in multiple directions, and a touch-and-hold fastener for easy installation and replacement, is attached to the door panel edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional door seals are used, then they can provide basic sealing, but they fail to provide effective sealing in multiple directions and are difficult to install and replace
Solution Approach 1:
The door seal is divided into multiple independent bulb seals, each attached to different edges of the door panel. Each bulb seal can independently engage with different surfaces (doorjamb, floor, wall), allowing the seal to adapt to various door configurations and provide effective sealing in multiple directions while maintaining ease of installation and replacement.
Solution Approach 2:
The bulb seals are designed with a three-dimensional bulbous geometry that extends outward from the door panel edges. This dimensional change allows the seals to engage with surfaces in multiple directions (head-on engagement with doorjamb, sliding engagement with floor and wall), transforming a traditional two-dimensional seal into a multi-directional three-dimensional sealing system.
2Adaptability or versatility
If a flexible seal is used to engage with various surfaces, then sealing versatility is improved, but the seal becomes difficult to install and replace
Solution Approach 1:
The bulb seals are pre-attached to the door panel edges using a touch-and-hold fastener system during manufacturing. This preliminary action allows the seals to be pre-positioned and secured to the door panel before installation, eliminating the need for complex installation procedures and making replacement as simple as detaching the pre-attached seals.
Solution Approach 2:
A touch-and-hold fastener acts as an intermediary between the bulb seal and the door panel. This fastener system provides a simple mechanical connection that allows the seal to be easily attached and detached without requiring tools or complex procedures, thereby maintaining both versatility and ease of operation.
3Strength
If a rigid seal structure is used, then structural strength is improved, but the seal cannot engage with various surfaces effectively
Solution Approach 1:
The bulb seals utilize flexible sheet material that can deform and adapt to different surface geometries. This flexibility allows the seals to engage effectively with various surfaces (doorjamb, floor, wall) while maintaining sufficient structural strength to provide reliable sealing contact.
Solution Approach 2:
The bulb seals are designed with a curved, bulbous cross-sectional shape rather than a flat or rigid profile. This curvature allows the seal to conform to different surface angles and geometries, enabling effective engagement with multiple surfaces while maintaining structural integrity through the bulbous form.
Data Source
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AI summary
Example doors having a seal attached to an edge member of a door panel are disclosed herein. An example seal includes a flexible sheet of material with its longitudinal edges turned inward toward a more central portion of the sheet such that the sheet is turned partially or somewhat inside-out to provide a bulging seal geometry that is favorable for sealing in multiple directions. The seal, for example, is suitable for sealing in a head-on direction engaging an abutting surface, such as a doorjamb. The seal can also seal in sliding engagement with an adjacent surface parallel to the door panel. In some examples, the sheet defines a hollow chamber in which the longitudinal edges of the sheet reinforce or brace an exterior curved portion of the seal. In some examples, the sheet of material is a unitary seamless piece with an attached touch-and-hold fastener that makes the seal readily replaceable.