Conical Steel Stud Anchor to Prevent Stripping Under Heavy Loads
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Solution Overview
Problem
Conventional fasteners, such as wood and sheet metal screws, struggle to securely fasten heavy objects to steel studs due to the thin, hollow nature of steel studs, which results in poor surface contact and easy stripping, while drywall anchors are insufficient for load-bearing applications in steel-framed structures.
Innovation Solution
A helically threaded, conically shaped steel stud anchor with a unique auger-like thread progression and piercing features that curls around the steel stud, providing increased surface contact and resistance to stripping, allowing for secure attachment of heavy objects without the need for additional materials or extensive labor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional fasteners (wood or sheet metal screws) are used to fasten heavy objects to steel studs, then installation is simple and direct, but the fasteners strip easily and cannot securely hold heavy loads due to poor surface contact with the thin, hollow steel studs
Solution Approach 1:
The anchor features a conical shape with a pointed tip that transitions to a larger diameter body, allowing it to penetrate the steel stud and expand within the hollow cavity. This curved, tapered geometry enables the anchor to curl around the steel stud walls, creating significant surface contact area and mechanical interlocking that prevents stripping while maintaining load-bearing capacity
Solution Approach 2:
The anchor's threaded shaft is divided into multiple helical ridges that wind around the conical body. These segmented threads act as individual gripping elements that engage with the steel stud walls at different locations, distributing the load and providing multiple contact points that enhance both strength and resistance to stripping
2Ease of operation
If drywall anchors are used for light objects, then installation avoids steel studs entirely, but the anchors are insufficient for load-bearing applications in steel-framed structures
Solution Approach 1:
The anchor serves multiple functions: it acts as a penetration tool with its pointed tip to create the mounting hole, as an expansion device within the hollow steel stud cavity, and as a load-bearing fastener with its threaded shaft. This multi-functionality combines the installation simplicity of drywall anchors with the load-bearing capacity needed for steel-framed structures
Solution Approach 2:
The anchor's diameter increases along its length from the pointed tip to the larger body, creating a parameter gradient that enables easy penetration through drywall and steel stud while providing sufficient mass and surface area within the hollow cavity to bear heavy loads. The varying diameter allows the same object to perform both insertion and load-bearing functions
3Productivity
If steel stud construction is used to save time and materials, then building efficiency increases, but fastening heavy objects to walls becomes extremely difficult and time-consuming
Solution Approach 1:
The anchor is self-installing with no additional materials or tools required beyond a drill and driver. The conical shape with pointed tip automatically creates the mounting hole through penetration, and the threaded shaft self-threads into the hollow steel stud cavity, eliminating the need for pre-drilling, separate anchors, or additional support materials that would increase installation time
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The steel stud anchor achieves load ratings several times higher than existing fasteners, securely holding up to 1000 lbs or more, and can be used directly through millwork and drywall without requiring additional support, significantly reducing installation time and labor.
Implementation Method 1
a helical thread that winds around a conical shaft, with a pointed tip at one end and a flange at the other end opposite the pointed tip
Implementation Method 2
with a pointed tip at one end... The pointed tip pierces through the steel stud
Implementation Method 3
providing increased surface contact and resistance to stripping
Implementation Method 4
The steel stud anchor achieves load ratings several times higher than existing fasteners, securely holding up to 1000 lbs or more
Data Source
AI summary
A metal anchoring fastener fastens millwork onto walls constructed with wall cladding fastened to steel studs. The load typical of a loaded cabinet is borne by the steel stud anchors owing to the mate between the profile of the steel stud anchor and the layers of millwork and wall cladding and steel stud that said anchor penetrates. The pitch of the thread adorning the profile of the steel stud anchor progresses non-linearly along the length of said shaft, the shaft is generally non-linear in profile, and the thread profile is non-uniform along the length of said shaft. The anchor can also support a secondary screw concentrically penetrating the void at the center of the anchor, in order to hang loads from a wall, with or without millwork. Predrilling of the holes can enable installation of these zinc anchors.