Harness Leg Loop with Knee-Extending Inner Portion
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Solution Overview
Problem
Conventional harness leg loops often pinch against the thigh when under load, leading to discomfort during activities like climbing, zip lining, and hunting, due to their design that does not adequately accommodate the natural shape and movement of the leg.
Innovation Solution
The harness leg loop design features an inner thigh end portion that extends towards the knee, reducing pinching by angling or curving down, and an outer thigh end portion that extends away from the knee, with a central portion and multiple centerlines to distribute pressure evenly, along with a padded thigh support band for comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the leg loop is designed to wrap tightly around the thigh for secure positioning, then the harness provides better support and safety, but the leg loop pinches against the thigh causing discomfort
Solution Approach 1:
The leg loop employs different structural characteristics at different locations: the inner thigh end portion extends towards the knee with a reduced cross-section to minimize pinching, while the outer thigh end portion maintains a more substantial cross-section for secure wrapping. This local differentiation allows the harness to provide reliable support where needed while reducing discomfort in pinching areas.
Solution Approach 2:
The inner thigh end portion is designed with a curved or angled configuration that extends towards the knee rather than a straight linear path. This curvature allows the leg loop to follow the natural anatomy of the thigh more closely, distributing pressure more evenly and reducing concentrated pinching forces while maintaining secure positioning.
2Ease of manufacture
If the leg loop uses a simple straight band design for ease of manufacture, then production is simpler and cheaper, but the band deforms or twists under load reducing comfort and security
Solution Approach 1:
The leg loop is divided into distinct functional segments: an inner thigh end portion with specific geometric characteristics, an outer thigh end portion with different properties, and a central portion connecting them. This segmentation allows each part to be optimized for its specific function while maintaining overall manufacturing feasibility through modular construction.
Solution Approach 2:
The leg loop features asymmetric design where the inner and outer thigh end portions have different cross-sectional dimensions and orientations. The inner portion has a smaller cross-section extending towards the knee, while the outer portion has a larger cross-section for secure attachment. This asymmetry prevents deformation and twisting under load by creating a non-uniform structural distribution that naturally resists bending.
Data Source
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AI summary
A harness leg loop is provided to receive a thigh, above a knee, of a person wearing the harness. The leg loop may include a thigh support band that includes an outer thigh end portion and an inner thigh end portion. The inner thigh end portion is shaped to extend towards the knee when the leg loop is receiving the thigh.