Fiber-Reinforced Linking Structure for Screw Fitting

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Solution Overview

Problem

Fiber-composite linking structures in motor vehicles lack sufficient compressive strength and rigidity in screw fittings, which is a limitation in achieving lightweight construction while maintaining structural integrity.

Innovation Solution

A fiber-reinforced cross-laid structure integrated between the ends of a linking portion, combined with metal inserts, enhances compressive strength and rigidity without significantly increasing the overall mass, and the fiber direction aligns with the screw-fitting direction for improved mechanical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If metal inserts are used in fiber-composite linking structures, then compressive strength and rigidity in screw fittings are improved, but the overall mass of the linking structure increases

Engineering Contradiction:

Improvecompressive strengthVSAvoidoverall mass

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The patent applies local quality by providing fiber reinforcement specifically in the screw connection region of the linking structure, rather than reinforcing the entire structure. The cross-laid fiber structure is localized between the two end sides where screw fittings occur, providing enhanced compressive strength and rigidity exactly where needed while keeping the rest of the linking structure lightweight.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses composite materials by combining fiber-reinforced plastics with a specific cross-laid fiber structure. The linking portion consists of fiber reinforcement arranged in a cross-laid pattern (with fibers extending in different directions, including axially and transversely), creating a composite structure that provides both lightweight properties and enhanced mechanical strength in the screw fitting regions.

Inventive Principle:

Principle #40Composite materials

2Stability of the object's composition

If fiber reinforcement is added to increase compressive rigidity, then screw fitting performance is improved, but the complexity of the linking structure increases

Engineering Contradiction:

Improvecompressive rigidityVSAvoidstructural complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent merges the reinforcement function directly into the linking structure itself by integrating the cross-laid fiber structure as an inherent part of the linking portion. The fiber reinforcement is not a separate附加 component but is combined with the linking structure in a unified design, where the cross-laid fibers are embedded within the fiber-composite material of the linking portion.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10676139B2Linking structure for linking a fiber-reinforced plastics component to a linking component, and an assembly of a fiber-reinforced plastics component on at least one linking component

Publication Date: 2020.06.09 DR ING H C F PORSCHE AG

AI summary

A linking structure (1) is provided for linking a fiber-reinforced plastic component (2) to a support. The linking structure (1) has a main body (3) produced from a fiber-composite material and has a linking portion (4) configured so that a fastening screw can pass through the linking portion (4). The fastening screw is screw-fittable to the support. The linking portion (4) has two opposite end sides, and a fiber-reinforced cross-laid structure (7) extends between the two end sides of the linking portion (4).