Motorized Skates With Angled Trains For Stability
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Solution Overview
Problem
Existing individual mobility solutions in urban environments, such as power-assisted shoes and single-track roller skates, face inefficiencies due to unnatural hyperstatic behavior and energy loss from transverse forces, which affect speed, stability, and comfort.
Innovation Solution
A pair of motorized skates with articulated plates and trains, where the angle of the longitudinal axis of each train forms an adjustable angle between 5° and 20° with the plate, allowing for optimal alignment and reduced energy loss, featuring a common motor-driven front and rear rolling or sliding trains with wheels or tracks, and an elastic pivot to maintain stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If parallel tracks aligned in pairs are used (as in WO 2018/090135), then the structure provides stability, but it creates hyperstatic behavior and transverse forces that cause energy loss
Solution Approach 1:
The patent applies asymmetry by angling the rolling trains relative to the plate's longitudinal axis. Instead of symmetric parallel alignment, the trains are positioned at specific angles (5°-20°) to eliminate transverse forces while maintaining stability through asymmetric force distribution.
Solution Approach 2:
The patent changes the geometric parameter of track alignment from parallel (0° angle) to angled (5°-20° relative to longitudinal axis). This parameter modification eliminates the hyperstatic behavior and transverse forces that cause energy loss, while preserving structural stability.
2Power
If motorized means with parallel tracks are used, then propulsion is provided, but unnatural hyperstatic behavior disrupts walking movement
Solution Approach 1:
The asymmetric angular positioning of rolling trains (5°-20° from longitudinal axis) eliminates hyperstatic behavior, allowing the motorized propulsion to work naturally with the walking motion without disrupting the user's natural gait pattern.
Solution Approach 2:
The patent makes the angular parameter dynamic and adjustable (5°-20° range) to adapt to different users and walking conditions, enhancing the naturalness of operation while maintaining effective propulsion.
3Device complexity
If the rolling trains are aligned with the longitudinal axis of the plate, then the structure is simple, but transverse forces cause energy loss and reduced efficiency
Solution Approach 1:
The patent modifies the alignment parameter from 0° (parallel to longitudinal axis) to 5°-20° angular offset. This simple parameter change eliminates transverse forces and energy loss without significantly increasing structural complexity.
Data Source
AI summary
An individual movement equipment item, which is constituted by a pair of motorized skates, each of the motorized skates comprising: a plate in the form of a sole and having a front portion, which is articulated transversely relative to a rear portion, the plate having means for connecting to the foot or the shoe of the user, motorized means, which are formed by two portions, which are articulated transversely in order to form a front train and a rear train, connection means between the articulated plate and the motorized means, which connect the front portion to the front train and the rear portion to the rear train, characterized in that the angle of the longitudinal axis of the at least one of the trains of each of the skates forms an angle between 10° and 20°, and preferably of from 12° to 15°, with the longitudinal axis of the plate.