Over-Door Mirror Bracket Assembly for Tool-Free Height Adjustment
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Solution Overview
Problem
Existing over-the-door hanging systems require tools and physical force to assemble and adjust, making it difficult to hang mirrors or other flat articles without pre-drilled holes and without the need for tools.
Innovation Solution
An over-the-door hanging apparatus with a frame and bracket assembly that allows for tool-free assembly and adjustable height, using channels and hooks for secure attachment to the door without the need for screws or glue, enabling quick and easy hanging of flat articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional hangers are used that require screwing or gluing onto the rear of the mirror, then secure attachment is achieved, but tool availability and ease of installation deteriorate
Solution Approach 1:
The mounting system is divided into separate components: a bracket assembly that attaches to the door and a frame assembly with the mirror that attaches to the bracket. This segmentation eliminates the need for tools by using a mechanical interlocking system where the frame assembly can be easily connected and disconnected from the bracket assembly through simple manual operations.
Solution Approach 2:
The bracket assembly serves as an intermediary between the door and the frame assembly. It provides a mounting interface that requires no tools for attachment to the door, and creates a standardized connection point for the frame assembly, thereby mediating the connection between the fixed door structure and the adjustable mirror frame.
2Ease of operation
If mirrors are hung at fixed positions, then installation simplicity is improved, but height adjustability deteriorates
Solution Approach 1:
The mounting system transitions from a static fixed-position design to a dynamic adjustable design. The bracket assembly includes a vertical channel with multiple positioning holes, allowing the frame assembly to be mounted at different heights. The adjustable nature maintains simplicity by using a standardized interface that can be quickly repositioned by removing and reattaching the frame assembly at different locations on the bracket.
3Strength
If pre-drilled holes are required in the mirror, then secure mounting is achieved, but manufacturing complexity and cost deteriorate
Solution Approach 1:
Instead of attaching the hanger to the mirror (traditional approach), the system inverts the attachment sequence by first securing the bracket assembly to the door, then attaching the frame assembly to the bracket. This reversal eliminates the need for pre-drilled holes in the mirror, as the mounting hardware is attached to the door structure first, and the mirror frame is simply connected to this pre-installed bracket system.
Data Source
AI summary
An apparatus for hanging an article from a door. In one aspect, the invention can be a frame comprising first and second channels in a rear surface of the frame; a first and second mounting plate, each of which comprises a first, second and third edge and a vertical axis; the first mounting plate secured to the rear surface of the frame so that the first channel is coextensive with the vertical axis of the first mounting plate and the second mounting plate secured to the rear of the frame so that the second channel is coextensive with the vertical axis of the second mounting plate; a bracket assembly comprising a first pair of vertically aligned hooks and a second pair of vertically aligned hooks; and wherein the first and second pairs of hooks of the bracket assembly extend into the first and second channels, respectively.