Sheet Metal Framing Connectors for Unskilled Assembly
Solution Overview
Problem
Existing framing systems for wood frame buildings are often expensive and cumbersome, making them unsuitable for simple structures, and require skilled labor for assembly, which limits their use by unskilled workers.
Innovation Solution
A simplified framing system using sheet metal connectors, specifically angle frame connectors and base frame connectors, fabricated by die cutting and press-forming, that allows for assembly with nominal 2×4 inch lumber without the need for cutting, enabling unskilled workers to construct structurally sound frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional metal connectors or brackets are used to connect framing members, then structural strength is improved, but cost increases and ease of operation deteriorates due to complexity and skill requirements
Solution Approach 1:
The connector is divided into two separate components: a L-shaped connector with nailing surfaces for perpendicular members, and a separate bracket for parallel members. This segmentation allows each component to be simple and easy to assemble, while together they provide robust structural connection capability.
Solution Approach 2:
A lip is added to the connector that acts as an intermediary element. The lip receives and positions the framing member, making assembly easier by guiding the member into place and providing a reference surface for alignment, thereby improving ease of operation without compromising structural strength.
2Strength
If conventional metal connectors or brackets are used to connect framing members, then structural strength is improved, but device complexity increases making them cumbersome to use
Solution Approach 1:
The connector system is segmented into simple, modular components (L-shaped connector and separate bracket) that can be easily manufactured and assembled. This reduces device complexity while maintaining the ability to provide strong structural connections through proper component placement and nailing patterns.
Solution Approach 2:
The connector uses simple sheet metal construction with standard nailing connections rather than complex welded or bolted assemblies. This approach creates a simpler, more manageable device that is easier to replace or adjust if needed, reducing overall system complexity.
3Stability of the object's composition
If existing framing systems are used for simple structures, then structural stability is ensured, but cost increases making them unsuitable for simple structures
Solution Approach 1:
The connector is manufactured from simple sheet metal using conventional die cutting and press-forming techniques, eliminating the need for expensive welding, bending, or complex fabrication processes. This dramatically reduces manufacturing cost while maintaining adequate structural stability for simple structures through proper design and nailing patterns.
Solution Approach 2:
The connector design optimizes material usage and geometric parameters to provide sufficient structural stability for simple structures without the over-engineering and associated costs of conventional connectors. The L-shape and lip configuration are optimized for the specific loading conditions of simple structures.
Data Source
AI summary
A simplified framing system with two or more arches which are joined together into a unitary structure by means of connector elements. Each arch is joined to a base by means of connector elements herein termed “base frame connectors”. The angle frame connectors and base frame connectors are preferably fabricated from sheet metal by conventional die cutting and press-forming or stamping techniques. The simplified framing system of this disclosure is particularly designed for assembly using nominal 2×4 inch lumber. The system does not require cutting the lumber except for straight, perpendicular cutting of the lumber to the desired lengths.