Explosion-Proof Hitting Ball Melting Connection

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Solution Overview

Problem

Existing hitting training devices with fillings such as sponge, cotton, or air can burst when the cladding breaks, causing injuries, environmental mess, and loud noises.

Innovation Solution

An explosion-proof hitting ball and training device featuring a tubular member made of plastic and a ball member made of explosion-proof material, with a chamber formed by transverse tubular and ball walls, and a melting-connection for structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional fillings (sponge, cotton, rubber chips, sand, foam material, or air) are used in hitting training devices, then the device can absorb impact force and protect the user's hands, but the filling will spread on the ground when the cladding breaks, causing environmental mess and difficulty in cleanup

Engineering Contradiction:

Improveimpact absorption and hand protectionVSAvoidfilling spread and environmental mess

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the filling material from the traditional loose form and encloses it within a rigid spherical shell structure. The filling is contained within the sphere, preventing it from spreading on the ground when the outer cladding breaks, thus eliminating the environmental mess problem while maintaining impact absorption functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses a composite structure combining a rigid spherical shell made of breakable material with internal filling material. This composite design allows the outer shell to provide structural integrity and contain the filling, while the filling itself maintains the impact absorption properties needed for hand protection during hitting training.

Inventive Principle:

Principle #40Composite materials

2Reliability

If traditional fillings are used in hitting training devices, then the device can absorb impact force, but the filling can burst and injure persons when the cladding breaks

Engineering Contradiction:

Improveimpact absorptionVSAvoidinjury risk from bursting filling

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the harmful bursting characteristic by enclosing the filling within a rigid spherical shell. The shell contains the filling even when the outer cladding breaks, preventing the filling from bursting outward and injuring persons, while still allowing the filling to absorb impact forces.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The rigid spherical shell acts as a beforehand protective barrier that cushions and contains the filling material. This pre-established containment structure prevents the filling from causing injury during breakdown events, while the filling itself continues to provide impact absorption protection for the user's hands.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Reliability

If air is used as filling in hitting training devices, then the device can absorb impact force, but very loud noises will occur during the explosion of the cladding, which will scare persons

Engineering Contradiction:

Improveimpact absorptionVSAvoidloud noise during cladding explosion

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts the loud noise problem by containing the air filling within a rigid spherical shell. When the outer cladding breaks, the shell contains the air and prevents explosive expansion, eliminating the loud noise that would otherwise scare persons, while the air continues to provide impact absorption.

Inventive Principle:

Principle #2Taking out (Extraction)

4Reliability

If air is used as filling in hitting training devices, then the device can absorb impact force, but the fragments of the cladding can cause injuries to persons when the cladding bursts

Engineering Contradiction:

Improveimpact absorptionVSAvoidinjury risk from cladding fragments

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the fragment injury risk by introducing a rigid spherical shell that contains the air filling. This shell acts as a containment barrier that prevents cladding fragments from scattering and causing injuries to persons when the outer cladding breaks, while still allowing the air inside to absorb impact forces.

Inventive Principle:

Principle #2Taking out (Extraction)

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 prevents the hitting ball from bursting, thereby avoiding injuries and environmental damage, while maintaining structural integrity and allowing for adjustable air pressure for varying training needs.

Implementation Method 1

the tubular wall being disposed around the tubular member and integrally connected to the outer wall by melting-connection

Methodology Applied

Scientific EffectMelting-connection: Melting

Data Source

PatentUS12324972B2Explosion-proof hitting ball and training device including the same

Publication Date: 2025.06.10 AZUNI INT

AI summary

An explosion-proof hitting ball and a training device including the same are provided, wherein the explosion-proof hitting ball includes: a tubular member made of plastic material and including an outer wall; and a ball member made of explosion-proof material and including a tubular wall and a ball wall, the tubular wall and the ball wall being transverse and connected to each other to form a chamber, the tubular wall being disposed around the tubular member and integrally connected to the outer wall by melting-connection.