Three-Ski Trike Folding Frame for Compact Cable-Car Transport

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Solution Overview

Problem

Existing ski winter sports devices, such as ski bikes, require significant space and volume for transport, limiting the number of users that can be accommodated in cable cars, particularly in high-capacity ski areas.

Innovation Solution

A ski trike design with three arrangeable skis that can be folded to reduce overall length and height, allowing for compact transport and efficient use of space, featuring a frame and standing device connected in a movable manner to facilitate folding and unfolding without tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the ski winter sports device is designed with a fixed frame structure for stable operation, then operational stability is improved, but transport volume increases and more space is required in cable cars

Engineering Contradiction:
Improveoperational stabilityVSAvoidtransport volume
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The frame device is divided into multiple frame parts that can be moved relative to each other. The first frame part connects to the holding device, the second frame part connects to the standing device, and these parts can be folded together to reduce volume while maintaining structural integrity during operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The frame device transitions from a static fixed structure to a dynamic foldable structure. The frame parts are connected in a relatively movable manner, allowing the device to adapt its volume - expanded during operation for stability and compacted during transport to reduce space requirements.

Inventive Principle:
Principle #15Dynamics

2Volume of moving object

If the ski winter sports device is designed with a foldable frame structure to reduce transport volume, then transport efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvetransport volumeVSAvoidframe structure complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The frame is segmented into multiple movable parts that can be folded together. This segmentation enables volume reduction while keeping each individual frame part relatively simple in structure, avoiding the need for complex mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The frame employs simple movable connections between frame parts that allow folding and unfolding without requiring complex locking mechanisms or additional components, thus reducing device complexity while achieving the foldable function.

Inventive Principle:
Principle #15Dynamics

3Reliability

If the frame device and standing device are connected rigidly for stable operation, then operational stability is improved, but the ability to fold and reduce volume is worsened

Engineering Contradiction:
Improveoperational stabilityVSAvoidfoldability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The connection between the frame device and standing device is designed to be relatively movable rather than rigid. This allows the structure to maintain stability during operation when the parts are extended, while enabling folding and volume reduction when the parts are moved relative to each other.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The frame and standing device are divided into separate frame parts that can move relative to one another. This segmentation provides the flexibility needed for folding while maintaining structural integrity and operational stability when the device is in use.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4153333B1Winter skiing device, in particular a skitrike, for gliding downhill with three skis
Publication Date: 2025.09.17 REALIZATION BY INVESTMENT 4 0 RISIKOKAPITAL GMBH
  • EP4153333B1 patent drawingFigure 1~2
  • EP4153333B1 patent drawingFigure 3~5
  • EP4153333B1 patent drawingFigure 6~8

AI summary

The invention relates to a ski winter sports device (1), more particularly a ski trike, for sliding downhill, having three arrangeable skis A, B, C, the ski winter sports device comprising: - a standing device (2), on which a user can stand, and on which standing device (2) two skis A, B can be arranged, which skis can be arranged next to each other in the direction of travel F such that one ski A, B is available for each foot of a user, and - a frame device (3) for connecting the standing device (2) to a holding device (4) for holding on by hand, - wherein the frame device (3) and the standing device (2) are interconnected such that they can move relative to each other, and - wherein the frame device (3) and the standing device (2) can be folded relative to each other so that the spatial volume RV required by the ski winter sports device (1), more particularly the total length GL and/or the total height GH of the ski winter sports device (1), can be reduced.