Adjustable Doorsill with Lifter for Subfloor Alignment
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Solution Overview
Problem
Existing doorsills face challenges in achieving proper alignment with subfloors and door frames, which affects their ability to form effective air and watertight seals and manage water effectively, leading to potential interior damage due to misalignment imperfections.
Innovation Solution
The doorsill design includes an adjustable substrate with lifters, threaded bores, and adjustment screws that allow for tilting and leveling, along with a removable sill deck and detachable dam, enabling precise orientation and installation to ensure proper alignment and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional fixed doorsills are used, then the structure is simple and easy to manufacture, but the alignment with subfloors and door frames is imprecise, leading to poor sealing and water management
Solution Approach 1:
The doorsill incorporates adjustable components including threaded rods that can be rotated to extend or retract, allowing the doorsill to be dynamically adjusted during installation to achieve precise alignment with the subfloor and door frame. This transforms a static structure into a dynamic one that can adapt to installation variations.
Solution Approach 2:
The doorsill is divided into multiple separable components including the substrate, threaded rods, adjustment screws, and sill deck. This segmentation allows each component to be independently adjusted and positioned, enabling precise alignment while maintaining ease of installation and adjustment.
2Reliability
If adjustable components are added to improve alignment, then the sealing and water management functionality is improved, but the device complexity increases
Solution Approach 1:
The threaded rods serve multiple functions: they provide structural support for the doorsill, enable vertical adjustment to compensate for subfloor imperfections, and facilitate precise alignment with the door frame. This multi-functionality reduces the need for separate adjustment mechanisms.
Solution Approach 2:
The adjustment mechanism is designed to be self-adjusting during installation. The threaded rods can be manually rotated to extend or retract, allowing installers to self-correct alignment issues without requiring additional tools or complex adjustment procedures.
3Ease of operation
If precise alignment is achieved through adjustment mechanisms, then water management and sealing are enhanced, but the installation time and complexity increase
Solution Approach 1:
The threaded rods are pre-installed on the substrate before final assembly. This preliminary action allows the adjustment mechanism to be prepared in advance, reducing the time required during final installation as the rods can be quickly rotated to achieve the desired alignment.
Data Source
AI summary
A doorsill for forming the bottom of an entryway. The doorsill has a substrate to be disposed above a subfloor and a lifter provided on the substrate capable of extending from a bottom of the substrate. The lifter is adjustable to change the orientation or position of the bottom relative to the subfloor.