Cellular Support for Vehicle Structural Reinforcement

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Solution Overview

Problem

Structural elements with cavities in vehicles face challenges in sealing, reinforcement, and damping due to irregular shapes and limited surface area for attachment, leading to inadequate connection and mechanical stability.

Innovation Solution

A support device with multiple cells surrounding cavities, providing a large attachment area for adhesives, allowing for better connection and reinforcement, sealing, or damping of structural elements, and adaptable to various applications through modular design and material selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a support element with limited surface area is used, then the device complexity is reduced, but the connection strength to the structural element deteriorates

Engineering Contradiction:
Improveconnection strengthVSAvoidsupport structure complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The support element is divided into multiple cells (e.g., hexagonal, pentagonal, or quadrangular cells) that are arranged in a honeycomb-like pattern. This segmentation increases the total surface area available for adhesive connection while maintaining a relatively simple overall structure. Each cell acts as an independent load-bearing unit, distributing stresses throughout the structure and enhancing the connection strength to the structural element without requiring a complex monolithic design.

Inventive Principle:
Principle #1Segmentation

2Strength

If the support element is made larger to increase connection surface area, then the connection strength improves, but the weight of the device increases

Engineering Contradiction:
Improveconnection strengthVSAvoiddevice weight
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The support element utilizes a cellular structure with thin-walled cells that provide high surface area for adhesive bonding relative to the overall mass. The cell walls act as thin films that distribute loads efficiently across the structure. This allows achieving high connection strength through increased surface area while keeping the material用量 (and thus weight) low, as the cellular geometry provides structural efficiency without requiring thick or massive components.

Inventive Principle:
Principle #30Flexible shells and thin films

3Area of stationary object

If a cellular structure with multiple cells is used, then the surface area for adhesive connection increases, but the manufacturing complexity increases

Engineering Contradiction:
Improveattachment surface areaVSAvoidmanufacturing simplicity
Core Design Contradiction:
Area of stationary objectVSEase of manufacture

Solution Approach 1:

The cellular support element is designed with standardized cell geometries (such as hexagonal, pentagonal, or quadrangular cells) that can be manufactured using common fabrication processes. The same basic cell pattern can be replicated multiple times to create supports of different sizes and configurations, making the design universal and easy to manufacture. This standardized cellular approach allows achieving high surface area for adhesive connection while maintaining manufacturing simplicity through repetition of basic geometric units.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 device achieves a stronger, more stable connection and improved mechanical load-bearing capacity while maintaining lightweight construction, effectively sealing, reinforcing, and damping cavities in structural elements.

Implementation Method 1

an outer surface of the support can be connected to the structural element by an adhesive

Methodology Applied
Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentUS11708115B2Device for reinforcing, sealing or damping a structural element
Publication Date: 2023.07.25 SIKA TECH AG
  • US11708115B2 patent drawing
  • US11708115B2 patent drawing
  • US11708115B2 patent drawing

AI summary

A device for reinforcing, sealing, or damping a structural element in a motor vehicle including a support which has multiple cells, wherein each cell surrounds a cavity. Each cavity is at least partially delimited by walls in each direction, wherein each cell has an extension in length, height, and width between 5 mm and 100 mm. An outer surface of the support can be connected to the structural element by an adhesive.