Perforated Leather Inner Shoe Linings for Ski Boots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inner shoes for skiing, snowboarding, and inline skating fail to provide optimal support, secure fit, and efficient moisture transport, often relying on complex and expensive leather linings.
Innovation Solution
An inner shoe design featuring a foam base material combined with a leather or leather-like inner lining, which is perforated for improved moisture regulation and transport, and a thicker foam base in key areas for enhanced comfort and ease of entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a leather inner lining is applied over the entire surface to ensure secure foot support and moisture transport, then the foot is held securely and moisture is transported effectively, but the manufacturing complexity and cost increase significantly due to high leather requirement
Solution Approach 1:
The patent applies leather or leather-like material only in specific areas where it is most needed - the entry area, shaft area, tongue area, forefoot area, and heel area - rather than covering the entire inner shoe surface. This localized application maintains the secure foot support and moisture transport benefits while significantly reducing leather consumption, manufacturing complexity, and cost.
Solution Approach 2:
The inner lining is divided into multiple functional zones with leather material applied selectively to each area (entry area 19, shaft area 5, tongue area 7, forefoot area 9, heel area 11). This segmentation allows the design to achieve optimal foot support and moisture management only where required, rather than uniformly across the entire surface, thereby reducing overall material usage and complexity.
2Ease of operation
If the foam base material is made thicker in key areas to enhance comfort and ease of entry, then the comfort and ease of entry are improved, but the weight and material consumption increase
Solution Approach 1:
The foam base material is designed with varying thickness across different regions of the inner shoe. Specifically, the foam is thicker in the entry area to facilitate easy entry and in the heel area for comfort, while maintaining appropriate but not excessive thickness in other areas. This localized thickness variation achieves optimal comfort and ease of entry without uniformly increasing the overall weight of the inner shoe.
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 combination of foam base material and leather lining ensures optimal support, secure fit, and effective moisture transport, maintaining a warm and dry foot climate while allowing for individual adaptation and quick drying.
Implementation Method 1
Leather is a material with special properties. Not only is it particularly strong and durable, but it is also relatively impermeable to water. Nevertheless, leather has good breathability. It is therefore sufficiently permeable to air and water vapour.
Implementation Method 2
The foam base material ensures optimal insulation and supports the heat regulation of the leather.
Implementation Method 3
The foam base material can have a perforation at least in a partial area. In this way, moisture that develops in the inner shoe while wearing the inner shoe can be transported away from the foot more easily through the perforated foam base material.
Data Source
Figure 1~4
AI summary
The invention relates to an inner shoe (1), in particular for a ski, snowboard, inline skating shoe, climbing boots or the like, having a foam base material (3), on which in the inner area (23) of the inner shoe (1), an inner lining (21) is applied, at least in some areas. The inner shoe (1) is characterized in that the inner lining (21) of the inner shoe (1) is at least partially made of leather or of a material having similar or identical physical properties (leather inner lining).