Chain-Type Crampons With Segmented Spikes and Restraining Bar
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Solution Overview
Problem
Existing crampons for mountain-climbing boots suffer from reduced brake power on snowy or icy roads due to snow adherence and discomfort, and the elastic band can stretch under strong frictional forces, leading to a deteriorated wearing state.
Innovation Solution
Chain-type crampons with an elastic band and chains featuring multiple spikes and link rings are designed, where the elastic band covers the outsole, and chains are coupled with spikes and link rings to enhance friction and prevent snow adherence, with a circular restraining bar to maintain the band's tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chains are used as anti-skid member, then brake power is improved, but snow adheres to chains causing discomfort and reduced performance
Solution Approach 1:
The continuous chain is segmented into discrete spike elements connected by link rings. This segmentation prevents snow from adhering across the entire surface, as the gaps between spikes allow snow to fall through rather than accumulate, while maintaining effective braking contact with the ground.
Solution Approach 2:
The chain structure creates a porous configuration with gaps between spikes and link rings. This porous design allows snow to pass through rather than accumulate on the surface, preventing the harmful effect of snow adherence while maintaining the braking function through the exposed spike edges.
2Strength
If elastic band tightly covers front heel portion, then crampons are securely bound, but band stretches under strong frictional force deteriorating wearing state
Solution Approach 1:
The circular restraining bar is positioned at the front heel portion to provide preemptive support against the stretching force. When strong frictional forces occur during climbing, the restraining bar absorbs and distributes the stress, preventing the elastic band from over-stretching and maintaining its binding effectiveness throughout the climbing activity.
3Reliability
If multiple spikes are added to chains, then brake power is increased, but device complexity increases
Solution Approach 1:
Each spike element serves multiple functions: it provides braking contact with the ground, prevents snow adherence through its segmented design, and connects to adjacent spikes via link rings to maintain structural integrity. This multi-functionality increases brake power without proportionally increasing complexity, as the same basic spike structure performs multiple roles.
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 design significantly increases brake power on snowy or icy roads, prevents snow from adhering to the crampons, and maintains the band's tension even under strong frictional forces, ensuring effective slip prevention and comfort.
Implementation Method 1
an elastic band is bound around the upper portion of an outsole of mountain-climbing boots... The crampons are tightly attached to the boots due to the elastic force of the band
Implementation Method 2
preventing the slip of the boots due to the friction between the crampons and the snowy road or icy road
Data Source
AI summary
Disclosed are chain-type crampons for preventing mountain-climbing boots from being slipped on a snowy road or icy road when climbing a mountain. The crampons having an elastic band and chains mounted on the band are provided with a plurality of spikes and link rings, so that a brake power on the snowy road or icy road is increased and snow is not adhered to the crampons.