Archery Bow Riser Cavity Design for Deformation Control
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Solution Overview
Problem
Archery risers experience excessive deformation during the draw cycle, leading to reduced repeatability, accuracy, and increased fatigue, which negatively impacts the bow's performance and safety.
Innovation Solution
The riser design incorporates a top and middle section joined by first and second steps, forming a cavity that strengthens the riser while allowing it to be made with less material, reducing deformation and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the riser is made with more material to increase strength, then resistance to deformation improves, but weight increases
Solution Approach 1:
The riser is divided into multiple sections (first riser section, second riser section, third riser section) connected by steps. This segmentation allows strategic placement of material where structurally necessary while reducing material in less critical areas, achieving strength optimization without excessive weight
Solution Approach 2:
The riser features varying wall thicknesses and material distribution across different sections. The first and second riser sections have different wall thicknesses, and the steps create localized structural reinforcements. This local quality variation provides enhanced strength at critical stress points while using less material overall, directly resolving the contradiction between strength and weight
2Stability of the object's composition
If the riser is made with more material to reduce deformation, then dimensional stability improves, but manufacturing cost increases
Solution Approach 1:
The riser is segmented into multiple sections with varying material distribution. This allows the design to achieve dimensional stability through strategic material placement rather than uniform material addition, reducing overall material consumption and manufacturing cost while maintaining stability
Solution Approach 2:
Different sections of the riser have different wall thicknesses and material properties tailored to their specific functional requirements. This local quality approach ensures dimensional stability is achieved only where necessary, avoiding unnecessary material usage and reducing manufacturing costs
3Ease of manufacture
If the riser design is simplified to reduce manufacturing complexity, then ease of manufacture improves, but strength decreases
Solution Approach 1:
The riser is divided into distinct sections (first, second, and third riser sections) connected by steps. While this increases structural complexity, each section can be manufactured using standard processes, and the modular design actually simplifies quality control and assembly, maintaining ease of manufacture while achieving superior strength
Solution Approach 2:
The varying wall thicknesses and step configurations create localized structural features that enhance strength without requiring complex manufacturing processes. The design uses conventional manufacturing techniques to create optimized material distribution, achieving high strength while maintaining manufacturing simplicity
Data Source
AI summary
An archery bow riser for an archery bow is disclosed. The archery riser, in an embodiment, includes a first section, a frame connected to the first section and a second section connected to the frame. The frame defines a cavity or inner space, and the frame is configured to reduce deformation of at least part of the archery bow riser.