Fluororesin Separating Element for Hydraulic Accumulators
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Solution Overview
Problem
Existing elastically flexible separating elements in hydraulic accumulators face issues with impermeability and mechanical durability, leading to material tears under mechanical stress and limited mobility, which compromises their functional reliability and longevity.
Innovation Solution
A structural component made from fluororesin materials, specifically polytetrafluoroethylene (PTFE), with loop-shaped structural parts that allow for thin wall thickness and high flexural fatigue strength, ensuring excellent diffusion tightness and mechanical properties, even in aggressive media environments, and can be produced inexpensively and assembled easily.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the separating element is made from conventional elastic materials with increased wall thickness to improve impermeability, then diffusion tightness is improved, but mechanical durability deteriorates due to material tears under stress
Solution Approach 1:
The patent changes the material parameter from conventional elastic materials to fluororesin materials (PTFE), which fundamentally alters the material's chemical resistance and mechanical properties. This parameter change allows the material to maintain both impermeability and mechanical durability by resisting degradation from aggressive media that would otherwise cause tearing in conventional materials
Solution Approach 2:
The patent uses fluororesin material as a composite solution that combines the properties of low friction, high chemical resistance, and adequate elasticity. This composite material approach resolves the contradiction by providing a material that inherently resists both permeation and mechanical failure under stress
2Strength
If the separating element is made from conventional materials with increased wall thickness to improve mechanical strength, then strength is improved, but mobility deteriorates due to limited flexibility
Solution Approach 1:
The patent changes the material parameter to fluororesin with specific elastic properties that allow thin-walled construction. This parameter change enables the separating element to maintain high mobility and flexibility while achieving sufficient mechanical strength through the material's inherent properties rather than increased thickness
3Ease of operation
If the separating element uses thin wall thickness to improve mobility and flexibility, then ease of operation is improved, but mechanical durability worsens due to susceptibility to tears
Solution Approach 1:
The patent changes the material parameter from conventional materials to fluororesin material, which provides high mechanical durability even at thin wall thicknesses. This parameter change allows the separating element to achieve both high flexibility for mobility and sufficient strength to resist tearing under mechanical stress
4Ease of manufacture
If conventional materials are used to reduce cost, then ease of manufacture is improved, but reliability worsens in aggressive media environments
Solution Approach 1:
The patent changes the material parameter to fluororesin material, which inherently provides excellent chemical resistance to aggressive media. This parameter change resolves the contradiction by selecting a material that maintains reliability in harsh chemical environments while still being manufacturable through established processes
Data Source
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AI summary
The invention relates to a structural component in the form of a parting element (10) which extends in two different main directions (12,13), is of at least single-layer design and is elastically flexible, which parting element (10) has at least two linear structural parts (18) which are arranged offset with respect to one another in the two main directions (12,13). As a result of at least a part of the linear structural parts (18) having a loop-shaped cross section and as a result of the parting element (10) being formed at least partially from a substance which has a fluoroplastic material, preferably a substance composed entirely of fluoroplastic material, a structural component is obtained which is characterized not only by excellent diffusion impermeability but also by particularly good mechanical properties such as extreme bending fatigue strength.