Integrated Blow-Molded Door Assembly for Modular Sheds
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Solution Overview
Problem
Conventional plastic shed doors in prefab modular sheds face issues such as increased installation complexity and cost due to hinges, sagging, misalignment, and water ingress, particularly in larger sheds.
Innovation Solution
An integrated door assembly using blow-molded plastic panels connected via an embedded folding groove and reinforced with pivotable frame brackets, eliminating the need for hinges and enhancing durability and water resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional hinges are used to connect door panels, then the door can rotate and open, but the installation complexity and cost increase
Solution Approach 1:
The patent merges the door panel and frame bracket into a single integrated component. The frame bracket is formed as one piece with the door panel through blow molding, eliminating the need for separate hinge components. This integration maintains the door's rotation capability while removing the complexity of multiple parts and assembly steps.
Solution Approach 2:
The patent extracts and removes the conventional hinge component from the door assembly. Instead of using separate hinges to connect door panels, the design eliminates this component entirely by incorporating the connection function directly into the integrated door panel structure, thereby simplifying the overall device.
2Reliability
If heavy door panels are used in larger sheds, then the door provides adequate closure, but sagging and misalignment occur over time
Solution Approach 1:
The patent incorporates a pivotable frame bracket that allows the door panel to rotate dynamically around a pivot point. This dynamic connection point maintains proper alignment during operation and prevents sagging over time, as the pivot mechanism accommodates natural movements and settling of the door structure.
Solution Approach 2:
The patent uses composite construction by combining the door panel and frame bracket as an integrated structure. The frame bracket serves both structural support and connection functions, distributing loads and maintaining alignment while preventing the door from sagging under its own weight over time.
3Ease of operation
If conventional hinged door panels are used, then the door can open and close, but rainwater can seep into the shed
Solution Approach 1:
The patent merges the door panel and frame bracket into a single integrated component with seamless connections. This elimination of gaps and joints between separate components prevents rainwater from penetrating through the door assembly, while the integrated structure maintains full door opening and closing functionality.
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 solution simplifies installation, prevents sagging and misalignment, and ensures water-tight closure, improving manufacturing efficiency and structural integrity.
Implementation Method 1
a door panel that includes a door side panel and a door body, which are integrally formed through blow molding
Implementation Method 2
featuring a thinner plastic material at the fold to allow for flexibility and ease of movement
Implementation Method 3
the door assembly incorporates a pivotable frame bracket that encases the edges of the hinged, rotating panels, enhancing both strength and durability
Data Source
AI summary
The present subject matter discloses an integrated door assembly for a prefabricated shed constructed from modular plastic components or panels. The door assembly comprises a door panel that includes a door side panel and a door body, which are integrally formed through blow molding. The door body is connected to the door side panel via an embedded folding groove, featuring a thinner plastic material at the fold to allow for flexibility and ease of movement. Additionally, the door assembly incorporates a pivotable frame bracket that encases the edges of the hinged, rotating panels, enhancing both strength and durability.