Foldable Ball Net Frame Hinged Support Arms

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Solution Overview

Problem

Conventional rebound devices and nets for ball games are inconvenient to use, prone to displacement, collapse, or looseness when hit by a ball, and lack sufficient rebound force due to their folding structures.

Innovation Solution

A foldable ball net frame with a main pipe, foldable net frame, stop ring, and net, featuring hinged support arms and support poles with a lock mechanism, allowing for easy unfolding and folding, and adjustable rebound angle, providing great elasticity and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional assembled net frame is used for convenient carrying and storage, then portability is improved, but the rebound effect deteriorates and the frame becomes unstable when hit by a ball

Engineering Contradiction:

Improveconvenience of carrying and storageVSAvoidstability when hit by ball

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The net frame is divided into multiple detachable support arms that can be assembled and disassembled. Each support arm connects to the main body through quick-release mechanisms, allowing the frame to be segmented for easy carrying and storage while maintaining structural integrity when assembled and in use

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support arms are designed with adjustable and detachable connections that allow the frame to transition between a compact folded state for portability and a stable extended state for use. The dynamic assembly structure enables the frame to adapt between storage and operational configurations

Inventive Principle:

Principle #15Dynamics

2Strength

If a reverse umbrella-shaped foldable structure is used to enhance support strength, then structural strength is improved, but the rebound force is insufficient and the structure conflicts with normal use habits

Engineering Contradiction:

Improvesupport strengthVSAvoidconvenience of use

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

Instead of using a reverse umbrella-shaped structure that folds inward, the patent employs support arms that extend outward and downward to form a stable base. This inverted configuration provides both structural strength and intuitive ease of use, with the net hanging naturally from the extended arms

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The support arms are designed with different structural characteristics at different locations - the upper portion connects to the main body with hinge joints for flexibility, while the lower portion forms a stable tripod base with the ground. This local differentiation optimizes both strength and usability

Inventive Principle:

Principle #3Local quality

3Ease of operation

If a foldable net frame structure is used for portability, then ease of storage is improved, but the frame is prone to displacement, topple or loosen when the ball hits the net

Engineering Contradiction:

Improveease of storageVSAvoidframe stability during use

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The support arms are pre-positioned and pre-tensioned during assembly to ensure proper geometric configuration before use. The quick-release mechanisms are pre-set to maintain consistent tension and alignment, preventing displacement and loosening during operation

Inventive Principle:

Principle #10Preliminary action

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 solution enables convenient operation, stability, and effective ball rebound, making it easy to pick up balls while being durable against impact, with a simple and efficient structure that can be easily unfolded or folded for storage.

Implementation Method 1

a lower collar slidably fitted on the main pipe

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

One end of each main support arm is hingedly connected to the upper collar. Another end of each main support arm is hingedly connected to one end of the corresponding secondary support arm

Methodology Applied

Scientific EffectHinge mechanism: Hinge

Implementation Method 3

The net has buttonholes corresponding in number to the support poles. The net is detachably connected to the distal ends of the support poles through the buttonholes and tightens the distal ends of the support poles

Methodology Applied

Scientific EffectTension: Tension

Implementation Method 4

an elastic net. The elastic net is connected to the net frame

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS9266003B2Foldable ball net frame

Publication Date: 2016.02.23 IRI GREAT INT

AI summary

A foldable ball net frame includes a main pipe, a foldable net frame, a stop ring, support poles, and a net. The foldable net frame includes an upper collar and a lower collar. One end of a main support arm of the foldable net frame is hingedly connected to the upper collar, and another end is hingedly connected to one end of a secondary support arm. Another end of the secondary support arm is hingedly connected to the lower collar. The stop ring is disposed between the upper nest and the lower nest and locked on the main pipe. The support poles and the main support arms are coaxially structured. The support poles are disposed at the distal ends of the main support arms, respectively. The net has buttonholes and is detachably connected to the distal ends of the support poles therethrough.