Rotatable Door Leaf Handler for Hardware Installation
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Solution Overview
Problem
Conventional methods for installing door hardware require significant labor and manpower, as installers must handle heavy door leaves in various orientations, often necessitating the use of lifting devices or increased manpower to manage the size and weight, which complicates the placement and removal of door leaves on saw-horses.
Innovation Solution
A door leaf handler with a rotatable frame that allows for secure, stable positioning of door leaves in multiple orientations, enabling one-man installation of hardware from a single location, reducing the need for excessive labor and effort by providing a stable working platform and facilitating easy rotation of the door leaf for hardware installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If door hardware is installed piece-by-piece in place on hinged and swung doors, then installation accuracy can be maintained, but labor time and manpower requirements increase significantly
Solution Approach 1:
The door leaf is pre-installed with hardware components in a horizontal position on the door leaf handler before being swung into the final vertical position. This preliminary action allows installers to work on a stable, accessible platform without the constraints of working on a hanging door, thereby maintaining accuracy while significantly reducing installation time and labor requirements.
2Productivity
If door leaves are placed on saw-horses for hardware installation, then productivity increases, but the need for lifting devices or increased manpower increases due to the size and weight of door leaves
Solution Approach 1:
The door leaf handler incorporates a rotatable frame that can swing the door leaf between horizontal and vertical positions. This dynamic mechanism allows the door to be easily repositioned without requiring separate lifting devices, as the rotatable frame itself provides the lifting and positioning function through its mechanical design.
Solution Approach 2:
The door leaf handler serves multiple functions: it provides a stable working platform for hardware installation, enables easy repositioning of the door leaf, and eliminates the need for separate lifting equipment. This multi-functional design consolidates what would otherwise require multiple separate devices into a single integrated system.
3Device complexity
If installers work on hand and knee at floor level to install hardware, then equipment complexity is minimized, but worker comfort and installation quality decrease
Solution Approach 1:
The door leaf handler elevates the door leaf to a convenient working height and provides a stable platform, creating an equipotential working condition where the installer can work at a comfortable, ergonomic level rather than bending to floor level. This eliminates the need for complex equipment while significantly improving worker comfort and installation quality.
Data Source
AI summary
The inventive technology, in at least one embodiment, may be described as a door leaf handler comprising: a stationary support; a rotatable frame established substantially above [ said ] the stationary support; and wheels configured to allow rotation of [ said ] the rotatable frame about a frame rotation axis, wherein [ said ] the rotatable frame comprises at least one hinge, and door leaf securement rails, and is openable and closeable at [ said ] the at least one hinge along a rotatable frame opening axis. An installer can install hardware on a door leaf secured in the rotatable frame when the installer is in a first position, and then, in order for that installer to be able to install door hardware on an 10 opposite side of the door from that same position, the installer can rotate the rotatable frame, with door secured in it, 180° . Locks and rotational stops, inter alia, can facilitate operation.