Table Tennis Net Retraction System for Automatic Storage Configuration
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Solution Overview
Problem
Conventional table tennis tables require manual and potentially damaging retraction of the net during configuration changes from playing to storage and vice versa, leading to increased storage size and risk of damage.
Innovation Solution
A table tennis table with a net retraction system featuring rotatable playing surfaces, slidably connected net support posts, and a mechanism using linear chains, toothed belts, flexible cables, and biasing elements to automatically transfer net posts between playing and storage configurations, driven by surface rotation and gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the table tennis net is manually retracted into a position between the playing surface boards, then the storage size of the table tennis table is reduced, but the playing surfaces or the mechanism for retaining the table tennis net may be damaged
Solution Approach 1:
The net support posts are equipped with automatic retraction mechanisms that self-actuate during configuration transitions. The posts automatically retract into positions between the playing surface boards without requiring manual intervention, thereby reducing storage size while eliminating the risk of damage to playing surfaces or retention mechanisms that would result from manual retraction operations.
Solution Approach 2:
Manual mechanical retraction operations are replaced with automated mechanical systems. The net support posts incorporate automated retraction mechanisms that use mechanical linkages connected to the playing surface support structure, enabling automatic positioning during configuration transitions without human intervention.
2Volume of moving object
If the table tennis net is removed or manually retracted every time the table tennis table is used, then the storage size is reduced, but the mechanism for retaining the table tennis net may be damaged
Solution Approach 1:
The retention mechanism is integrated with automatic retraction systems that self-actuate during configuration transitions. The net support posts automatically retract and are retained in their retracted positions through automated mechanical linkages, eliminating the need for repeated manual removal and reinstallation operations that would damage the retention mechanism.
Solution Approach 2:
The automatic retraction mechanism performs the retraction action in advance as part of the configuration transition process itself. When the playing surfaces are moved to storage configuration, the net support posts are automatically retracted and secured before the transition is complete, preventing damage to the retention mechanism that would occur with repeated manual operations.
3Volume of moving object
If the table tennis net is manually retracted, then the storage size is reduced, but careful location in the proper position is required every time the table tennis table is converted to playing configuration
Solution Approach 1:
The net support posts are equipped with automatic retraction and positioning mechanisms that self-actuate during configuration transitions. The posts automatically retract into proper storage positions and automatically return to playing positions during configuration changes, eliminating the need for users to manually locate and position the net support posts, thereby simplifying operation.
Solution Approach 2:
Manual positioning operations are replaced with automated mechanical linkages. The net support posts are mechanically connected to the playing surface support structure through linkages that automatically position the posts during configuration transitions, eliminating the need for careful manual location and positioning by the user.
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
Enables automatic and damage-free conversion of net configurations, reducing storage size and simplifying the process of transitioning between playing and storage modes.
Implementation Method 1
a biasing element that returns the net posts to the initial position
Implementation Method 2
biased by a biasing member or the force of gravity
Data Source
AI summary
Table tennis tables include a base that support two playing surfaces and a net supported between two playing surfaces by a left and right net support posts. For regulation table tennis tables, the table tennis net must extend a regulation distance beyond the left and right edges of the playing surface boards and a regulation height above the playing surfaces. The net support systems may comprise a net retraction system that is automatic or manual. An automatic net retraction system will move the net support posts from an in-use extended configuration to a retracted storage configuration.