Anchor Bar Joining via Nested Fastening Body

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Solution Overview

Problem

Existing methods for producing anchor rails often result in connections between anchor bodies and rail bodies that are not reliably tensile and pressure-resistant, requiring complex processes and higher material strengths, while also being less economical and precise.

Innovation Solution

A manufacturing method involving a fastening body inside the rail body, where the anchor body is inserted and simultaneously bonded to both the fastening body and the rail body using deep laser beam welding, creating a common weld seam that enhances tensile and pressure resistance with smaller anchor cross-sectional areas and lower material strength requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If anchor bodies are welded to the outside of the rail body using conventional methods, then the connection can be achieved, but the connection is not reliably tensile and pressure-resistant and requires higher material strengths

Engineering Contradiction:
Improveconnection strengthVSAvoidreliability of tensile and pressure resistance
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The anchor body is inserted through the rail body and nested within a fastening body that is arranged in the interior of the rail body. The fastening body receives the anchor body and provides internal support, creating a nested structure where the anchor body passes through the rail body and is secured by the fastening body from the interior side. This nesting arrangement allows the connection to resist both tensile and pressure forces effectively.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The joining process simultaneously joins the anchor body with both the rail body and the fastening body in a material-bonded manner. Instead of separate welding operations, the invention combines multiple joining actions into a single process that creates integrated material bonds between all three components (anchor body, rail body, and fastening body), resulting in a unified and reliable connection.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If conventional welding methods are used to join anchor bodies to rail bodies, then the process can be completed, but complex processes and higher material strengths are required

Engineering Contradiction:
Improvesimplicity of manufacturing processVSAvoidcomplexity of joining process
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The joining process simultaneously joins the anchor body with both the rail body and the fastening body in a material-bonded manner. Instead of separate welding operations, the invention combines multiple joining actions into a single process that creates integrated material bonds between all three components (anchor body, rail body, and fastening body), resulting in a unified and reliable connection.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If anchor bodies are inserted through rail bodies and secured by deformation or external fastening, then the connection can be achieved, but the connection lacks reliable tensile and pressure resistance

Engineering Contradiction:
Improvereliability of connectionVSAvoidtensile and pressure resistance
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The anchor body is inserted through the rail body and nested within a fastening body that is arranged in the interior of the rail body. The fastening body receives the anchor body and provides internal support, creating a nested structure where the anchor body passes through the rail body and is secured by the fastening body from the interior side. This nesting arrangement allows the connection to resist both tensile and pressure forces effectively.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The joining process simultaneously joins the anchor body with both the rail body and the fastening body in a material-bonded manner. Instead of separate welding operations, the invention combines multiple joining actions into a single process that creates integrated material bonds between all three components (anchor body, rail body, and fastening body), resulting in a unified and reliable connection.

Inventive Principle:
Principle #5Merging (Combining)

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

This method achieves a strong, reliable connection capable of absorbing high tensile and pressure forces with reduced material usage and simpler, more economical processing, while minimizing precision demands and process steps.

Implementation Method 1

the anchor body is joined in a joining process simultaneously with the fastening body and with the rail body in a material-bonded manner

Methodology Applied
Scientific EffectLaser beam welding: Laser Beam Welding

Data Source

PatentEP3329060B1Method of manufacturing an anchor bar and anchor bar
Publication Date: 2020.09.30 HILTI AG
  • EP3329060B1 patent drawingFigure 1~3
  • EP3329060B1 patent drawingFigure 4~8
  • EP3329060B1 patent drawingFigure 9~13

AI summary

The invention relates to a method for producing an anchoring rail comprising a rail body (10) and also comprising anchoring bodies (30) which are fastened to the rail body, in which method - a fastening body (40), which is provided with an opening (49), is arranged in the interior (14) of the rail body, - an anchoring body is passed through a passage opening which is provided in the rail body, - the anchoring body is arranged in the opening of the fastening body, and - the anchoring body is connected in a cohesive manner to the fastening body and to the rail body at the same time in one joining process. The invention also relates to an anchoring rail comprising a rail body and also comprising anchoring bodies which are fastened to the rail body, wherein at least one of the anchoring bodies is connected in a cohesive manner both to a fastening body, which is arranged in the interior of the rail body, and also to the rail body.