Bendable Rafter Bracket with Rotating Segments
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Solution Overview
Problem
Existing construction brackets for securing rafters to wood frame roofs lack sufficient flexibility and structural integrity to effectively conform to the pitch of opposing rafters and beam, leading to inadequate reinforcement and potential instability.
Innovation Solution
A bendable strap with integrated left and right brackets, featuring perpendicular and upper portions with install channels and mounting holes, designed to conform to the shape of rafters and beam, allowing for secure fastening with fasteners to enhance structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing construction brackets are used to secure rafters, then the brackets can provide some structural support, but they lack sufficient flexibility to conform to the pitch of opposing rafters and beam, resulting in inadequate structural integrity
Solution Approach 1:
The bracket is divided into multiple segments including a central body portion and two rafter support portions that can independently rotate relative to each other. This segmentation allows each portion to adapt to different angles and pitches of rafters while maintaining overall structural integrity through the connection mechanisms between segments.
Solution Approach 2:
The bracket incorporates dynamic elements such as rotatable rafter support portions and adjustable mounting mechanisms that allow the structure to adapt to varying rafter pitches. The rotatable portions can change their orientation to match the specific angle requirements of different rafter configurations, providing both flexibility and reliable support.
2Strength
If existing construction brackets are used to secure rafters, then the brackets can be installed with standard fasteners, but they cannot effectively distribute loads evenly across the rafter and beam structure, leading to potential instability
Solution Approach 1:
The bracket extends support into multiple spatial dimensions by having rafter support portions that can be positioned on opposite sides of the rafter. This three-dimensional configuration distributes loads more effectively across the rafter and beam junction, enhancing both strength and stability through multi-directional load path creation.
Solution Approach 2:
The central body portion of the bracket features a curved lower surface that conforms to the pitch angle of the rafter. This curved geometry allows the bracket to distribute loads more evenly across the rafter surface, preventing stress concentration and improving overall structural stability while accommodating various pitch angles.
Data Source
AI summary
A rafter reinforcement bracket apparatus for securing rafters to strengthen a wood frame roof includes a bendable strap configured to conform to a rafter bottom side of a pair of opposing rafters and a beam between the pair of rafters. A left and right bracket are coupled to a strap top side adjacent a strap front edge and a strap back edge, respectively. Each has a perpendicular portion extending perpendicularly from the strap and an upper portion extending perpendicularly from the perpendicular portion and lying in a plane parallel to a plane of the strap. Each of the strap, the left bracket, and the right bracket has a plurality of mounting holes extending therethrough. Each of the mounting holes is configured to receive a fastener to fix the apparatus to the pair of opposing rafters and the beam.