Skateboard Steering Mechanism for Uneven Terrain Stability
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Solution Overview
Problem
Conventional skateboards with four wheels improve operational stability but still face issues with smoothness due to limited wheel deflection and pivoting range, particularly on uneven road conditions, posing a risk for beginners.
Innovation Solution
A skateboard design featuring a board with a front and rear steering device, each with two wheels, a wheel seat, and a wheel rack that rotates and swings, allowing for better stability and smoothness by transmitting user force effectively through inclined axes and incorporating a restoring unit for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the skateboard uses a single central pin to connect the hanger to the board, then the structure is simple, but the wheels have a relatively smaller range of deflecting and pivoting, resulting in poor operational smoothness
Solution Approach 1:
The connection structure is segmented into multiple components: a first connection component with a first connection axis and a second connection component with a second connection axis. This segmentation allows each component to independently rotate, increasing the overall range of motion and improving operational smoothness while maintaining structural simplicity
Solution Approach 2:
The connection structure is designed to be dynamic rather than rigid. Both the first connection component and second connection component are capable of rotation, allowing the wheels to deflect and pivot through a larger range of angles, thereby improving operational smoothness on uneven surfaces
2Stability of the object's composition
If the skateboard uses four wheels, then operational stability is improved, but the wheels still have limited deflecting and pivoting range, resulting in insufficient operational smoothness
Solution Approach 1:
The wheel connection structure is designed with dynamic rotation capabilities. The first connection component can rotate relative to the board around the first connection axis, and the second connection component can rotate relative to the first connection component around the second connection axis, allowing the wheels to adapt to uneven road conditions while maintaining stability
Solution Approach 2:
The connection structure adds rotational degrees of freedom in multiple dimensions. The first connection axis and second connection axis are arranged at different orientations, enabling the wheels to deflect and pivot through a larger multi-dimensional range of motion, thereby improving operational smoothness without compromising stability
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 design enhances operational stability and smoothness by allowing better force transmission and reducing counteraction from the wheel rack, providing a more stable and efficient riding experience, especially on uneven surfaces.
Implementation Method 1
the restoring unit includes a spring cover and a restoring spring... The restoring spring has two protruding rods extending perpendicularly to the rotation axis
Data Source
AI summary
A skateboard includes a board adapted for a user to stand with both feet thereon and having a major axis, and a front steering device and a rear steering device respectively disposed on front and rear sections of a bottom surface of the board along the major axis and each having two wheels. The front or rear steering device has a wheel seat disposed on the bottom surface of the board rotatably around a rotation axis which inclines downwards from front to rear, and a wheel rack disposed on the wheel seat rotatably or swingably around a main axis. An abutted surface is defined where the wheel seat and the wheel rack are abutted against each other. On an imaginary vertical plane including the major axis, where the rotation axis passes the abutted surface is in front of where the main axis passes the abutted surface.