Independent Skid Oscillation for Personal Vehicle Stability
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Solution Overview
Problem
Existing personal city transport vehicles, such as kick scooters, lack stability, safety, and comfort due to their single-board design, which leads to difficulties in cornering, braking, and maintaining balance.
Innovation Solution
A wheeled road vehicle with a frame, handle, and two independent skids, each equipped with wheels, allowing the user to stand with feet on the skids and control the vehicle through a handle, with the skids connected to the frame for independent rotation and stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single board design is used, then the device complexity is reduced, but the stability and safety deteriorate
Solution Approach 1:
The single board is segmented into two separate skids that can rotate independently relative to the frame. Each skid is connected to the frame through a rotation axis, allowing independent oscillation. This segmentation provides stability benefits by distributing the user's weight across two separate support planes while maintaining a relatively simple overall structure.
2Ease of operation
If the handle is rotated for cornering, then the steering control is simplified, but the user's balance safety deteriorates
Solution Approach 1:
The skids are designed to rotate dynamically relative to the frame during cornering maneuvers. When the user leans into a turn, the corresponding skid rotates automatically around its axis, allowing the support plane to tilt and provide lateral support. This dynamic adaptation maintains user balance during cornering while the handle still provides steering control through front wheel rotation.
3Volume of moving object
If the steering column is positioned directly in front of the user's feet, then the compact design is improved, but the braking safety deteriorates
Solution Approach 1:
The segmentation of the single board into two separate skids creates space between the user's feet and the steering column. Each skid is positioned laterally, which naturally spaces the user's feet away from the central steering column location. This spatial separation allows the user to quickly place feet on the ground during emergency braking without the steering column obstruction, improving braking safety while maintaining a compact overall vehicle footprint.
4Ease of manufacture
If a single board is used, then the manufacturing cost is reduced, but the comfort and usability deteriorate
Solution Approach 1:
The dynamic rotation capability of the skids relative to the frame enhances usability comfort by adapting to the user's movements and terrain variations. Each skid can independently adjust its angle, providing a more comfortable and natural standing position similar to skiing. This dynamic feature improves comfort without significantly increasing manufacturing complexity, as the rotation mechanism uses simple axes and connections.
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 vehicle provides enhanced stability, safety, and comfort by allowing a natural standing position, improved control during cornering, and reduced risk of falls, while maintaining balance both in motion and when stationary.
Implementation Method 1
recall means (61, 62) are further comprised, arranged so as to maintain each skid in a balance position and to exert a force onto each skid which tends to bring back each skid to said balance position
Data Source
Figure 1~2
Figure 3
Figure 3A
AI summary
The present invention relates to a wheeled road vehicle comprising: - A frame (42, 42'); - A handle (30) which is connected to the frame; - At least one front wheel (44); - According to the invention, the vehicle further comprises: - A first skid (11) and a second skid (12), each one equipped with at least one wheel (20, 21); - Each one of said first skid and second skid forming a support plane for a user's foot; - Said first and second skid being connected to the frame so that each skid can move independently from each other with respect to said frame; - And further comprising recall means (61, 62) arranged so as to maintain each skid in a balance position and to exert a force onto each skid which tends to bring back each skid to said balance position when a rotation of the skid moves the skid from its said balance position.