Offset Motor Football Kicking Trainer with Damping Stabilization
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Solution Overview
Problem
Current sports apparatuses for practicing the skill of curling a football do not provide a realistic training experience, as they often elevate the ball above the striking surface, making it difficult to transfer developed skills to actual game situations, and they fail to account for variations in ball sphericity which can lead to wobbling and instability.
Innovation Solution
A sports apparatus with a ball holder and motor system where the motor is laterally offset to minimize the height of the ball above the striking surface, incorporating a gearing arrangement, annular bearing, and damping mechanism to stabilize the ball, and a control system for regulating rotation, along with sensors to provide feedback on the ball's motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the motor is positioned directly above the ball holder to simplify the structure, then the device complexity is reduced, but the ball height above the supporting surface increases, reducing training realism
Solution Approach 1:
The motor is positioned laterally adjacent to the ball holder rather than directly above it, changing the spatial arrangement from a vertical configuration to a horizontal one. This lateral positioning allows the drive shaft to engage the ball holder's equator through side access, minimizing the vertical height of the ball above the supporting surface while maintaining structural simplicity.
2Device complexity
If the ball holder rotates freely without stabilization, then the device complexity is reduced, but the ball stability deteriorates due to variations in ball sphericity causing wobbling
Solution Approach 1:
The damping mechanism utilizes the ball's own weight and the gravitational force acting on it to provide stabilization. As the ball rotates on the slightly inclined damping surface, gravity naturally guides it toward the lowest point, creating a self-correcting effect that minimizes wobbling without requiring active control systems or complex mechanical stabilizers.
3Device complexity
If no feedback system is implemented, then the device complexity is reduced, but the measurement precision of ball motion characteristics is lost
Solution Approach 1:
Optical sensors are positioned to detect the ball's rotation speed, direction, and trajectory by measuring light reflections and interruptions as the ball rotates. This feedback system provides real-time data about the ball's motion characteristics, enabling users to adjust their kicking technique to achieve desired curling effects while keeping the overall device relatively simple.
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 apparatus provides a more realistic training experience by keeping the ball close to the ground, stabilizing it against wobbling, and offering feedback on the ball's motion to improve curling skills, allowing users to develop techniques that can be easily applied in game situations.
Implementation Method 1
The rotation of the ball creates pressure differences around the ball due to drag which in turn causes the ball to experience a force perpendicular to the direction of travel of the ball. The drag on the side of the ball which is turning in the direction of travel of the ball causes the airflow to slow, whereas on the other side of the ball the airflow is sped us. Greater air pressure on the side of the ball where the airflow is slowed down, and lower pressure on the side where the airflow is sped up, forces the ball in the direction of the lower pressure side. This phenomenon is known as the Magnus effect.
Data Source
AI summary
The present invention relates to a sports apparatus (100). The sports apparatus (100) comprises: a ball holder (102); and a motor (110) arranged to rotate said ball holder (102); wherein an axis of rotation of a drive of the motor (110) is offset from the axis of rotation of the ball holder (102). The sports apparatus (100) is used for practicing football kicking skills.