Adjustable Standoff for Door Pull Alignment
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Solution Overview
Problem
Conventional door pulls often fail to match pre-drilled holes in doors due to specification imperfections and human error, leading to wasted time and money in reordering or reconfiguring door pulls and doors.
Innovation Solution
An adjustable and configurable standoff system with a clamp portion and protruding portion that allows for customizable attachment to doors, featuring set screws and auxiliary set screws for secure mounting and adjustable grip sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional door pulls with permanently fixed standoffs are used, then the door pull structure is simple and easy to manufacture, but the standoffs cannot be adjusted to match improperly spaced pre-drilled holes, leading to wasted time and money
Solution Approach 1:
The standoff structure transitions from a static, permanently fixed design to a dynamic, adjustable design. The clamp portion can be moved along the attachment portion to different positions, allowing the standoff to adapt to various hole spacings. This dynamic capability enables the same door pull to be reused on different doors with different pre-drilled hole configurations.
Solution Approach 2:
The standoff is divided into separate functional portions: an attachment portion for mounting to the door, a clamp portion for securing the grip, and a leg portion for positioning. This segmentation allows independent adjustment of each portion, particularly enabling the clamp portion to be repositioned along the attachment portion to match different hole patterns without replacing the entire door pull assembly.
2Adaptability or versatility
If door pulls are ordered without standoffs to allow customization, then adaptability improves, but the door pulls must be reordered if standoffs are needed, wasting time and money
Solution Approach 1:
The door pull assembly is designed as a universal system where the attachment portion can accommodate multiple configurations. The clamp portion can be positioned at different locations along the attachment portion, and multiple grips can be attached at different positions, allowing a single door pull to serve multiple door types and configurations without requiring separate orders for different standoff arrangements.
Solution Approach 2:
The door pull is delivered with the attachment portion and clamp portion pre-assembled but with adjustable positioning capabilities. The auxiliary set screws are pre-installed to enable future adjustments, and the structure is prepared in advance to allow easy reconfiguration without requiring additional ordering or complex assembly steps at installation time.
3Manufacturing precision
If pre-drilled holes are made with imperfections or incorrect spacing, then manufacturing errors occur, but the conventional door pulls cannot be installed, requiring costly reordering
Solution Approach 1:
The standoff position parameter can be changed by moving the clamp portion along the attachment portion. This allows the installation to accommodate variations in hole spacing without requiring precise manufacturing. The adjustable mechanism absorbs the manufacturing tolerances and errors, enabling successful installation even when pre-drilled holes are imperfectly spaced.
Solution Approach 2:
The adjustable standoff system enables the installer to self-correct for manufacturing errors by manually positioning the clamp portion to match the actual hole locations. The auxiliary set screws allow the installer to make precise adjustments and secure the clamp at the correct position, eliminating the need to return to the manufacturer for corrections.
Data Source
AI summary
An adjustable standoff, including an attachment portion comprising an aperture into which a grip is inserted, a clamp portion disposed on a first end of the attachment portion to control movement of the grip through the aperture, and a protruding portion disposed on a second end of the attachment portion to connect to a first surface of a door.