Anchor Rod Assembly With Multi-Hardness Sleeve for Mortar Mixing

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Solution Overview

Problem

There is no anchor rod that can be used universally across different synthetic resin mortar systems, including injection systems and composite anchor capsules, due to variations in mortar properties and application conditions.

Innovation Solution

An anchor rod assembly with a shaft section, a fastening section surrounded by a sleeve-like additional element made of different materials for support and tear areas, and a head part with a cutting edge for shredding and mixing mortar components, ensuring effective mixing and separation from the mortar.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single-material sleeve is used around the fastening section, then the structure is simple, but it cannot provide both support area and tear area with different hardness properties

Engineering Contradiction:
Improveadaptability to different mortar systemsVSAvoidcomplexity of sleeve structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies composite materials by constructing the sleeve from multiple materials with different hardness properties. The sleeve comprises a softer material (e.g., plastic) and a harder material (e.g., rigid foam or metal), creating distinct support and tear areas. This composite structure enables the anchor rod to adapt to different mortar systems while maintaining structural integrity and functionality.

Inventive Principle:
Principle #40Composite materials

2Adaptability or versatility

If the anchor rod is designed for specific mortar systems only, then the design is optimized for those systems, but it lacks universal applicability across different mortar types

Engineering Contradiction:
Improveuniversal applicability across mortar systemsVSAvoidmanufacturing complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent implements universality by designing the anchor rod with a multi-material sleeve that can function across different mortar systems (radically curing, polyadditively curing, and composite anchor capsules). The sleeve's dual hardness structure provides both support and tear functions that are beneficial regardless of the specific mortar type, making the anchor rod universally applicable while maintaining ease of manufacture through standardized design.

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

3Strength

If the sleeve material is too hard, then it provides sufficient support, but it cannot tear easily to allow mortar separation

Engineering Contradiction:
Improvesupport strengthVSAvoidease of tear separation
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The patent applies local quality by creating different hardness zones within the sleeve structure. The support area is made of harder material to provide structural strength, while the tear area is made of softer material to enable easy separation. This localized differentiation of material properties allows the sleeve to simultaneously provide both support strength and ease of tear separation in different regions of the same component.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP3847379B1Anchor rod assembly with pumping head
Publication Date: 2024.01.17 HILTI AG
  • EP3847379B1 patent drawingFigure 1
  • EP3847379B1 patent drawingFigure 2~4
  • EP3847379B1 patent drawingFigure 3

AI summary

An anchor rod assembly for fastening in synthetic resin mortar is described, having an anchor rod, which has a shank portion, a fastening portion and a head part which has a cutting edge, and having a sleeve-like additional element, which surrounds at least the fastening portion in certain regions.