Chain-Type Crampons With Segmented Spikes and Restraining Member
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Solution Overview
Problem
Existing crampons suffer from reduced brake power on snowy or icy roads due to snow adherence between chains and discomfort from stretched bands during steep slope climbing, leading to potential slips and injuries.
Innovation Solution
Chain-type crampons with an elastic band, multiple spikes, and link rings are designed to enhance stability and prevent snow adherence, featuring prefrontal spikes and a restraining member to maintain band tension and increase friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If chains are used as anti-skid members, then friction between crampons and snowy road is increased, but snow adheres to the chains causing discomfort and reduced brake power
Solution Approach 1:
The continuous chain structure is segmented into individual spike elements connected by link rings. Each spike acts as an independent anti-skid element, preventing snow from adhering between closely spaced chain links while maintaining friction through the distributed spike contacts with the snowy surface.
Solution Approach 2:
The harmful function of chain links (creating continuous contact surfaces that trap snow) is removed by extracting the chain structure and replacing it with discrete spikes connected by small link rings. The spikes provide the necessary friction while the gaps between them prevent snow accumulation.
2Reliability
If the elastic band tightly covers the front heel portion, then the crampons are securely attached to the boots, but the band stretches when strong frictional force is applied during steep slope climbing, deteriorating the wearing state
Solution Approach 1:
The restraining member is positioned at the front heel portion to preemptively counteract the stretching force before it significantly affects the band tension. By applying restraint at the point where stretching initially occurs, the system prevents the deterioration of wearing state before it propagates through the entire band structure.
Solution Approach 2:
Instead of uniformly reinforcing the entire elastic band, the restraining member is locally applied only at the front heel portion where stretching initially occurs during steep slope climbing. This localized reinforcement provides the necessary support to prevent band deterioration while maintaining the overall flexibility and elasticity of the band.
3Force
If multiple spikes are added to increase brake power, then friction on snowy road is improved, but the device complexity increases
Solution Approach 1:
The link rings serve multiple functions: they connect the spikes to form the crampon structure, allow relative movement between spikes for adaptability, and maintain the structural integrity of the entire assembly. This multi-functionality reduces the need for additional specialized components, thereby limiting the increase in device complexity despite adding multiple spikes.
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 solution effectively increases brake power on snowy or icy roads, prevents slip, and reduces snow adherence, ensuring better comfort and safety by maintaining band tension during steep slope climbing.
Implementation Method 1
the binding band is coupled to the body to tightly bind the body against the outsole of the boots
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
Figure 1
Figure 2A~2B
Figure 2C~2D
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 including an advanced spike on the front of the boot when so mounted, so that a brake power on the snowy road or icy road is increased and snow is not adhered to the crampons. The crampons have a restraining member at the front.