Pipe Joint Device with Curled Parts for Stable Support

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional pipe joint devices require separate support members and complex processing of inner surfaces, increasing manufacturing costs and complicating the assembly process, while existing solutions either weaken the pipe structure or necessitate high-precision casting.

Innovation Solution

A pipe joint device manufactured through a mechanical process involving pipe expansion and curling, forming a joint main body with specific diameter transitions and curled parts to securely hold mechanical elements without the need for casting or separate support members, using a series of punches and dies to shape the pipe joint device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate support members are added to stabilize mechanical elements, then reliability improves, but device complexity increases

Engineering Contradiction:

Improvestability of mechanical elementsVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The support function is merged into the pipe joint device body itself. The inner peripheral surface of the pipe joint device directly supports the mechanical elements (O-ring, backup ring) without requiring separate support members. This integration eliminates additional components while maintaining the stability function.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If inner peripheral surface is processed with grooves or tapers to support mechanical elements, then reliability improves, but ease of manufacture deteriorates

Engineering Contradiction:

Improvestability of mechanical elementsVSAvoidprocessing difficulty

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The complex inner peripheral surface processing (grooves, tapers) is extracted and replaced. Instead of processing the inner surface, the invention uses the outer peripheral surface geometry (curved surface with specific curvature radius) to provide the support function, eliminating difficult internal processing operations.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of manufacture

If casting method is used to manufacture pipe joint device, then ease of manufacture improves, but manufacturing precision deteriorates

Engineering Contradiction:

Improvemanufacturing processVSAvoiddimensional accuracy

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The casting process is replaced with a mechanical forming process. The pipe joint device is manufactured by mechanically forming a curved surface on the outer peripheral surface of a pipe, using controlled bending with specific curvature radius, rather than through casting which requires high-precision molds and produces dimensional accuracy issues.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 stable support and easy attachment/detachment of pipes without additional support members or surface processing, reducing manufacturing costs and simplifying the assembly process while maintaining structural integrity.

Implementation Method 1

performing a pipe expansion process of inserting punches for pipe expansion through both openings of the pipe and forming a joint main body having a small-diameter part of a first diameter at a central part of the joint main body and large-diameter parts formed at both sides of the small-diameter part

Methodology Applied

Scientific EffectPlastic deformation: Plasticity

Implementation Method 2

performing a curling process for both openings of the joint main body having the joint assembly inserted therein to thereby form first horizontal parts of the second diameter, diameter-reduced parts of which diameters gradually decrease from the first horizontal parts toward the openings, and second horizontal parts extending horizontally from the diameter-reduced parts toward the openings

Methodology Applied

Scientific EffectMechanical bending: Deformation

Data Source

PatentUS10677382B2Pipe joint device and method for manufacturing the same

Publication Date: 2020.06.09 JOINTOP

AI summary

A pipe joint device configured to interconnect two pipes to be inserted therein through openings of both opened ends thereof including a joint main body and a joint assembly disposed in the joint main body is provided. The joint main body includes a small-diameter part formed at a central part and large-diameter parts formed at both sides of the small-diameter part. Each of the large-diameter parts has a first horizontal part, a diameter-reduced part of which a diameter gradually decreases from the first horizontal part toward the opening, and a second horizontal part extending horizontally from the diameter-reduced part toward the opening. A portion of each of the second horizontal parts is configured as a curled part inclined toward an outer-diameter direction and the opening of the pipe joint device and then again inclined toward an inner-diameter direction and the opening and having a mountain-shaped section as a whole.