Tennis Stroke Trainer With Elastic Return Mechanism
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Solution Overview
Problem
Current teaching aids for tennis strokes, particularly for top spin and back spin, lack a controlled and repetitive training mechanism that allows players to practice effectively without assistance, limiting the improvement of their stroke form.
Innovation Solution
A portable tennis-stroke trainer device comprising a frame, a foam training ball, and an elastic cord system that allows players to practice top spin and back spin strokes independently by mounting the device to a tennis post, with adjustable fasteners and a mechanism for the ball to return to a neutral position after each hit, enabling repetitive practice without resetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional tennis ball is used for practice, then the player can practice stroke form, but the racket may be damaged after multiple hits
Solution Approach 1:
The patent uses a foam ball instead of a traditional tennis ball. The foam ball is designed to be softer and less damaging to rackets while still providing sufficient resistance for stroke practice. This disposable-like approach protects the expensive racket from damage during repetitive hitting exercises.
2Productivity
If a training aid is used to simulate tennis ball movement, then repetitive practice is enabled, but the device becomes more complex
Solution Approach 1:
The training aid incorporates an elastic cord mechanism that automatically returns the foam ball to its starting position after each hit. This self-service feature eliminates the need for a coach or assistant to manually reset the ball, enabling autonomous repetitive practice while keeping the device relatively simple in structure.
Solution Approach 2:
The elastic cord creates a periodic motion where the foam ball is struck by the player, then automatically returns to its initial position, ready for the next strike. This periodic action enables continuous repetitive practice without interruption or manual intervention.
3Ease of operation
If the training device is made portable and mountable on various posts, then ease of operation is improved, but structural integrity may be compromised
Solution Approach 1:
The training device is designed with a universal mounting system that can be attached to various types of posts (tennis posts, poles, etc.). The adjustable fasteners allow the same device to accommodate different post sizes and shapes, improving portability and ease of operation while maintaining structural integrity through robust connection mechanisms.
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 a controlled and focused environment for players to improve their stroke form by allowing repetitive practice of top spin and back spin strokes, reducing the risk of racket damage and enabling independent training with structural integrity and adjustable mounting for various post sizes.
Implementation Method 1
an elastic cord 23, seen in FIG. 1 and FIG. 2... The elastic cord 23 retracts both the cantilever arm 10 and the counterfort arm 14 after the training ball 21 has been hit by the user to a neutral position
Data Source
AI summary
A tennis-stroke trainer device is an apparatus that allows a user to perform various tennis strokes repetitively. The apparatus includes a frame, a training ball, a pair of length-adjustable fasteners, and an elastic cord. The frame offset and rotates the training ball around a post. The post is preferably a tennis post. The frame includes a U-shaped bracket, a cantilever arm, a counterfort arm, and a hook. The U-shaped bracket offsets and mounts both the cantilever arm and the counterfort arm with the post. The hook stretches the elastic cord along the cantilever arm. The training ball is preferably a large foam ball and serves as a target for the user. The pair of length-adjustable fasteners mounts the U-shaped bracket with the desired post. The elastic cord retracts the cantilever arm and the counterfort arm, and consequently the training ball after the training ball has been hit by the user.