Press-Fit Multi-Ring Seal Assembly Without Joining Lines

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Solution Overview

Problem

Existing force shunt seals require complex and costly processing for precise fitting and assembly, limiting material choices and geometry options, and often feature joining lines that compromise sealing integrity.

Innovation Solution

A seal comprising two or more pluggable rings with perpendicular component boundaries formed by punching, enabling cost-effective assembly via press-fit and sliding mechanisms without additional processing, allowing for various materials and geometries, and eliminating joining lines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional seal guidance principles (tongue and groove) are used with pressure-bearing parts, then sealing reliability is improved, but manufacturing complexity and cost increase due to additional processing requirements

Engineering Contradiction:
Improvesealing reliabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The seal is divided into multiple independent rings (first seal ring, second seal ring, third seal ring) that can be manufactured separately using simple punching processes, then assembled together. Each ring maintains its structural integrity while the segmented design eliminates the need for complex guidance principles in individual components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The seal rings are designed to nest within each other through press-fit connections, with the first seal ring fitting into the second, and the second fitting into the third. This nested arrangement provides stable positioning and pressure-bearing capability without requiring complex tongue-and-groove guidance structures.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Manufacturing precision

If precise fitting and complex component planes are created, then assembly precision is improved, but manufacturing cost increases due to cost-intensive processing

Engineering Contradiction:
Improveassembly precisionVSAvoidmanufacturing cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The component boundaries are pre-formed with perpendicular edges during the punching process, creating ready-to-assemble components with built-in alignment features. This preliminary formation of precise boundaries eliminates the need for subsequent costly machining operations to achieve fitting precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The perpendicular component boundaries formed by punching automatically provide the guidance and alignment needed for precise assembly. The geometry of the punched edges themselves serves the dual function of defining component limits and enabling precise fitting, without requiring additional guidance features or processing.

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If seals are assembled from segments, then manufacturing flexibility is improved, but sealing integrity deteriorates due to the presence of joining lines

Engineering Contradiction:
Improvemanufacturing flexibilityVSAvoidsealing integrity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

Multiple punched rings are combined through press-fit assembly to form a complete seal structure. The merging of these simple circular components creates a closed, continuous sealing structure that eliminates the need for joining lines, welds, or adhesives that would compromise sealing integrity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The seal structure maintains homogeneous material properties throughout, using the same punching and press-fit process for all components. This homogeneous construction approach ensures uniform sealing characteristics without introducing heterogeneous joining methods that would create weak points or leakage paths.

Inventive Principle:
Principle #33Homogeneity

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

Facilitates cost-effective, precise, and flexible assembly of seals with any material combination and geometry, ensuring a closed structure without joining lines, enhancing the economic attractiveness and technical sophistication of force shunt seals.

Implementation Method 1

The press/slide fit (A, B - 6, 7) is designed vertically at a right angle to the actual component plane

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a positively guided and precisely fitting press/slide fit is created during the subsequent combination

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3086003B1Seal in a shunt as clips set
Publication Date: 2024.11.06 KLINGER GMBH
  • EP3086003B1 patent drawing
  • EP3086003B1 patent drawing

AI summary

Force shunt seal having two or more rings as matable components having perpendicular component boundaries formed by stamping to one another, the seal having a press/slide fit (A - 6 , 7) and thus enables assembly via clips and the press/slide seat (A - 6, 7) is designed vertically at right angles to the actual component level.