Shoe Insole Arch Support with Thin Forefoot for Toe Movement
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Solution Overview
Problem
Conventional shoe insoles that provide stability and mobility struggle to enhance the exercise effect during walking or running, as they restrict toe movement and fail to effectively maintain the natural shape of foot arches.
Innovation Solution
A shoe insole design featuring a calcaneal anterior-part support protrusion and a toe ball support part that maintains the inner and outer longitudinal arches and transverse arches of the foot, with a thinner and softer insole front part to enhance toe freedom and ground grasping motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the insole maintains firm support structures to ensure foot arch stability, then foot stability is improved, but toe movement freedom deteriorates
Solution Approach 1:
The insole applies local quality by providing firm support only at specific locations (heel area with calcaneal anterior-part support protrusion and arch areas) while keeping the forefoot area soft and thin. This allows the insole to maintain foot arch stability through localized rigid support structures while permitting natural toe movement and ground grasping motion in the forefoot region.
Solution Approach 2:
The insole is segmented into distinct functional zones: a rigid heel support portion with calcaneal anterior-part support protrusion, a midfoot arch support portion, and a soft forefoot portion. This segmentation allows different regions to perform different functions - the heel and arch portions provide structural stability while the forefoot portion enables toe freedom of movement.
2Ease of manufacture
If the insole uses uniform thickness and material throughout, then manufacturing simplicity is improved, but toe exercise effect deteriorates
Solution Approach 1:
The insole implements local quality by varying material thickness and density across different regions. The forefoot area uses thinner, softer material to allow toe movement and ground grasping exercise, while the heel and arch areas use thicker, firmer material for structural support. This localized variation enhances toe exercise effect while remaining manufacturable through standard multi-layer insole construction techniques.
3Stability of the object's composition
If the insole restricts toe movement to maintain arch shape, then arch maintenance is improved, but exercise effect during walking deteriorates
Solution Approach 1:
The insole segments the support function from the movement function. The heel and midfoot portions are designed with rigid support structures that maintain arch shape, while the forefoot portion is designed with soft, thin material that allows toe movement. This segmentation enables the insole to simultaneously maintain arch shape and facilitate toe exercise during walking.
Solution Approach 2:
The forefoot portion of the insole uses thin, flexible material that allows the toes to move freely and grasp the ground during walking. This thin film approach maintains arch support through the rigid heel and midfoot portions while permitting natural toe motion and ground contact for exercise effect.
Data Source
Figure 1
Figure 2
Figure 3A~3H
AI summary
There is provided a shoe insole that facilitates a movement to grasp the ground with toes while ensuring stability and motility. A shoe insole 1 includes, in order to maintain an inner longitudinal arch 121, an outer longitudinal arch 122, and a transverse arch 120 of a foot, a calcaneal anterior-part support protrusion 90 that abuts a calcaneal anterior part 12A of the foot, and a toe ball support part 100 that supports a thenar 26A and a hypothenar 34A of the foot, with the calcaneal anterior-part support protrusion 90 maintaining the inner longitudinal arch 121, the outer longitudinal arch 122, and the transverse arch 120, wherein an insole front part 110 thinner than the toe ball support part 100 is provided in front of the toe ball support part 100.