Adhesive Elastomer Sealing for Intermediate Plate Leak-Tightness

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Solution Overview

Problem

Existing intermediate plates in fluid-operated control units, such as gear units, face challenges in maintaining a leak-tight seal under deformation and high fluid pressures, as conventional sealing systems fail to effectively compensate for structural variations and deformations without damaging the sealing materials.

Innovation Solution

Incorporating a resilient elastomer material layer with adhesive properties on the intermediate plate, which can be applied using methods like screen printing or roller coating, to stick to the housing parts and compensate for deformations parallel to the plate's plane without moving relative to the housing parts, thus preventing damage and ensuring a durable seal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional sealing systems are used in intermediate plates, then the structure is simple and easy to manufacture, but the seal fails to maintain leak-tightness under deformation and high fluid pressures

Engineering Contradiction:
Improveleak-tightnessVSAvoidsealing system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sealing element transitions from rigid to elastomeric material, fundamentally changing the physical parameters of the sealing component. This enables the seal to dynamically adapt to deformations and pressure variations, maintaining leak-tightness under conditions where conventional rigid seals would fail.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The sealing system employs composite construction by integrating elastomeric material with the intermediate plate structure. This combination leverages the flexibility and sealing capability of elastomers while maintaining the structural integrity of the plate, achieving both reliability and functional performance.

Inventive Principle:
Principle #40Composite materials

2Reliability

If rigid sealing elements are used, then the manufacturing is simple, but the sealing element cannot compensate for deformations without suffering friction damage

Engineering Contradiction:
Improveseal durabilityVSAvoidsealing element fabrication
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The sealing element transitions from rigid to elastomeric material, fundamentally changing the physical parameters of the sealing component. This enables the seal to dynamically adapt to deformations and pressure variations, maintaining leak-tightness under conditions where conventional rigid seals would fail.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The sealing element is constructed from elastomeric material that can flex and deform elastically. This flexibility allows the seal to accommodate housing deformations and surface irregularities without experiencing damaging friction, while maintaining continuous contact for effective sealing.

Inventive Principle:
Principle #30Flexible shells and thin films

3Adaptability or versatility

If the sealing element moves relative to the housing part during deformation, then it can accommodate structural changes, but friction damage occurs to the sealing material

Engineering Contradiction:
Improvedeformation compensationVSAvoidfriction damage
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The sealing element is constructed from elastomeric material that can flex and deform elastically. This flexibility allows the seal to accommodate housing deformations and surface irregularities without experiencing damaging friction, while maintaining continuous contact for effective sealing.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The sealing system transitions from a static rigid structure to a dynamic elastomeric seal that can adapt its shape and position in response to deformations. The elastomeric material absorbs dimensional changes through elastic deformation rather than relative movement, eliminating friction damage while maintaining sealing effectiveness.

Inventive Principle:
Principle #15Dynamics

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 elastomer material layer provides a reliable, pressure-resistant seal that maintains leak-tightness even under deformation, ensuring the integrity of the fluid passages and reducing the risk of damage from friction, while allowing for shear movements to accommodate structural changes.

Implementation Method 1

an elastomer material that is resilient and is appliable adhesively to stick to the respective housing part

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Implementation Method 2

The advantage of an elastomer material of this kind is not only its resilience, in order to be able to compensate for varying differences in height between the central unit and the respective housing part

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10480655B2Intermediate plate
Publication Date: 2019.11.19 ELRINGKLINGER AG
  • US10480655B2 patent drawing
  • US10480655B2 patent drawing
  • US10480655B2 patent drawing

AI summary

In order, in the case of an intermediate plate for mounting between housing parts of a fluid-operated control unit, in particular a gear unit, including a central unit that is constructed in the shape of a plate and, on either side of the central unit, a respective sealing system for sealing between the central unit and the housing part opposed thereto, this sealing system including sealing elements which are arranged on the respective side of the central unit and provide sealing around passages, to achieve the best possible seal between the central unit and the respective housing part, it is proposed that the respective sealing system should include as the sealing element at least one layer of an elastomer material that is resilient and is appliable adhesively to stick to the respective housing part.