Belt-Roller Sports Gear for Stable Off-Road Skating
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Solution Overview
Problem
Existing roller sports equipment is limited to smooth, paved surfaces and cannot safely navigate uneven terrain such as grass or stony ground, posing a risk of falls due to plant wrapping, debris, and unstable surfaces.
Innovation Solution
A device with a circulating belt and rotating rollers, featuring a binding mechanism and optional shock absorbers, allows secure attachment and stable movement on uneven surfaces, with adjustable tension and directional control, enabling use on off-road terrains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If simple wheels are used for roller sports equipment, then the device is simple and easy to manufacture, but it cannot safely navigate uneven surfaces such as grass or stony ground
Solution Approach 1:
The single wheel is segmented into multiple independent rollers (at least three rollers arranged in series) that can individually adapt to surface irregularities. Each roller is separated and independently mounted on the chassis, allowing them to rotate and position themselves according to the terrain, thereby enabling safe navigation on uneven surfaces while maintaining relative structural simplicity
Solution Approach 2:
The device transitions from a two-dimensional wheel contact (single point contact with ground) to a one-dimensional linear arrangement of multiple rollers. This dimensional change allows the rollers to distribute contact points along the length of the chassis, enabling the device to bridge gaps and accommodate surface variations in the vertical dimension while maintaining forward motion
2Reliability
If a circulating belt with multiple rollers is used, then the device can move safely on uneven surfaces, but the device complexity increases
Solution Approach 1:
The function of multiple rollers is merged into a single circulating belt system that encompasses all rollers. The belt acts as a unified structure that transmits driving force to all rollers simultaneously, reducing the number of independent drive mechanisms needed and simplifying the overall control system while maintaining the safety benefits of multiple contact points
Solution Approach 2:
The circulating belt serves multiple functions: it transmits driving force from the user's sliding motion to all rollers, maintains tension to keep rollers in contact with the ground, and provides structural support for the chassis. This multi-functionality reduces the need for separate systems for each function, thereby managing complexity
3Ease of operation
If the belt is driven by sliding motion, then the device can be operated without complex drive mechanisms, but the transmission of force may be inefficient
Solution Approach 1:
The circulating belt acts as an intermediary between the user's sliding motion and the rollers. Instead of directly driving each roller, the user's linear sliding motion is transferred to the belt, which then converts this motion into rotational motion of the rollers through friction contact. This intermediary mechanism maintains operational simplicity while improving force transmission efficiency compared to direct sliding contact with the ground
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 device provides stable and safe movement on uneven surfaces, minimizing falls and enhancing versatility for both forward and backward motion, similar to cross-country skiing, while maintaining smooth operation.
Implementation Method 1
The belt encircling the guide rollers is driven, which in turn drives the guide rollers. The belt is driven, for example, by a deliberate sliding motion from the user.
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to a device for sport and/or play, comprising a housing (12), a chassis (14) and a binding device (20), wherein the chassis (14) has at least two rollers (16) arranged one behind the other, each with an axis of rotation (26) and a closed belt (18), the axes of rotation (26) of the at least two rollers (16) are aligned parallel to each other and the closed belt (18) comprises the at least two rollers (16), wherein the at least two rollers (16) are arranged at least partially in the housing (12) and are each rotatably mounted, wherein the housing (12) has a top (22) and the binding device (20) is attached to the top (22) of the housing (12).