Wall Holder Mount With Self-Drilling Anchor for Drywall Strength
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Solution Overview
Problem
Existing wall mountable holders are not effectively designed for friable substrates like drywall, often requiring pre-drilling, additional tools, and can result in reduced holding strength due to improper fastener orientation or adhesive weaknesses.
Innovation Solution
A substrate-mountable holder system featuring a base with a hook and self-drilling drywall anchor, where a lobe and tang on the base ensure proper alignment and engagement with the substrate, combined with a cover that securely fastens over the anchor, enhancing pullout resistance and load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a holder with an integrated screw is used in friable substrate, then installation is simple, but the fastener may not be oriented properly and holding strength is reduced
Solution Approach 1:
The holder is divided into a base portion and a cover portion. The base portion contains the anchor and fastener mechanism, while the cover portion provides the mounting surface. This segmentation allows the fastener to be pre-oriented in the base before final installation, ensuring proper orientation without requiring post-installation adjustment that would compromise holding strength.
Solution Approach 2:
The fastener is pre-installed and pre-oriented in the base portion during manufacturing, before the holder is installed in the substrate. This preliminary action ensures that when the holder is installed, the fastener is already in the correct orientation to engage the anchor properly, eliminating the need for post-installation adjustment that would weaken the connection.
2Strength
If pre-drilling is performed to embed threaded portion in stud, then holding strength increases, but additional planning, tools and time are required
Solution Approach 1:
The system uses a self-drilling anchor with a drill bit that automatically creates the necessary hole in the substrate during installation. The anchor itself performs the drilling function as it is being installed, eliminating the need for separate pre-drilling operations and reducing installation complexity while maintaining holding strength.
Solution Approach 2:
The drilling function and anchoring function are merged into a single self-drilling anchor component. The anchor includes an integrated drill bit that creates the hole and then the anchoring portion engages the substrate, combining two operations into one installation step, thereby reducing the need for additional tools and planning.
3Ease of operation
If adhesive backing is used for one-piece holder, then installation is simple, but holding strength is significantly less
Solution Approach 1:
The adhesive bonding mechanism is replaced with a mechanical fastening system consisting of a self-drilling anchor and a fastener. Instead of relying on chemical adhesion, the system uses mechanical interlocking where the anchor is drilled into the substrate and the fastener secures the base portion, providing significantly higher holding strength while maintaining relatively simple installation.
4Ease of operation
If screw is driven into drywall without careful pilot hole positioning, then installation is simple, but drywall stripping occurs and holding strength is reduced
Solution Approach 1:
The self-drilling anchor performs the pilot hole drilling function automatically during installation. The integrated drill bit creates a precisely sized and positioned hole as the anchor is driven into the substrate, eliminating the need for separate pilot hole drilling and ensuring proper hole formation without requiring careful manual positioning, thereby preventing drywall stripping while maintaining installation simplicity.
Data Source
AI summary
A substrate-mountable holder system comprising: a first portion, a cover, an anchor and at least one fastener, the first portion having a hook extending therefrom and at least one opening for receiving the fastener(s), a cover configured to engage the first portion and hide the fastener(s). The first portion may include a lobe proximate the top of the rear surface to bias the bottom of the first portion toward the substrate to aid in more stable mounting of the first portion and further may include a tang projecting rearwardly from proximate the bottom for engagement with the substrate or a second fastener spaced proximate the first fastener to inhibit rotation of the system when installed. In addition, the first portion and the cover may have various features to fasten the cover securely to the first portion and provide the appearance of a unitary structure.