Offset-Section Frame Screw for Window and Door Alignment Correction
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Solution Overview
Problem
Incorrect screw positioning during window or door frame assembly leads to time-consuming corrections, such as drilling new holes or replacing screws, to ensure the frame is perpendicular to the mounting plane.
Innovation Solution
A screw with an axial offset between its reveal and frame sections, featuring matching wood threads and a thread-free section, allows for easy adjustment by rotating up to 180° to correct misalignment, enabling the frame to be moved into the correct assembly plane without additional holes or screw replacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional screws are used for mounting window or door frames, then the screws can be installed directly into the reveal or anchors, but misaligned screws require time-consuming correction by drilling compensatory holes or replacing screws
Solution Approach 1:
The screw is designed with a dynamic adjustment capability through its axial offset between the reveal section and frame section. This allows the screw to be rotated up to 180 degrees to correct misalignment, transforming a static fastening component into a dynamically adjustable one that can adapt to positioning errors without requiring replacement or additional holes.
Solution Approach 2:
The invention changes the geometric parameter of the screw by introducing an axial offset between the reveal section and frame section. This parameter change enables the screw to compensate for misalignment by rotating within a range determined by the offset distance, thereby improving ease of correction while maintaining assembly efficiency.
2Manufacturing precision
If precise screw positioning is required to ensure the frame is in the mounting plane, then alignment accuracy is improved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The axial offset is pre-built into the screw design during manufacturing, creating a preliminary geometric configuration that automatically compensates for positioning errors. This preliminary action eliminates the need for complex adjustment procedures during assembly, as the offset inherently provides the correction capability.
Solution Approach 2:
The axial offset acts as an intermediary element between the reveal section and frame section, mediating the relationship between the screw position and the frame alignment. This intermediary geometry allows misalignment to be corrected through rotation rather than requiring precise initial positioning or complex correction procedures.
3Ease of operation
If the screw is rotated to correct misalignment, then the frame can be moved into the correct assembly plane, but the screw structure must accommodate rotational movement
Solution Approach 1:
The screw is segmented into distinct functional sections: a reveal section with a first thread for engagement with the reveal or anchors, a frame section with a second thread for engagement with the frame, and a thread-free section between them. This segmentation allows each section to perform its specific function independently while the axial offset between sections enables rotation without compromising the threading functionality.
Data Source
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AI summary
Screw (1) for mounting a window or door frame with a screw head (1K) with a drive (1A) for rotating the screw and an opposing screw tip (1S) as well as a frame section (1R) for arrangement in the window or door frame and a jamb section (1L) for arrangement in a jamb, wherein the jamb section (1L) has a jamb axis (1AL) and the frame section (1R) has a frame axis (1AR), characterized by an axial offset (1V) between the jamb axis (1AL) and the frame axis (1AR).