Crimping Element with Mobile Nut for Axial Radial Adjustment

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Solution Overview

Problem

Existing fixing devices struggle with insufficient radial movement and complex assembly processes, particularly in aligning screws with misaligned holes, and require precise deformation for proper function.

Innovation Solution

A fixing device with a crimping element and nut configuration allowing both axial and radial movement, featuring an insert with a helical thread and a fusible zone for deformation during crimping, enabling better angular adjustment and simplified assembly without deformation of the nut.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the attachment element is formed by deformation of the second shaft after introduction into the first shaft, then radial movement is allowed, but the device becomes difficult to produce and assembly is complex

Engineering Contradiction:
Improveradial movement capabilityVSAvoidassembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The device is divided into separate components: the first shaft, the second shaft with attachment element, and the insert. These components can be manufactured independently and assembled in a simplified sequence, avoiding the need for post-assembly deformation operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The attachment element is pre-formed on the second shaft before assembly, and the insert is pre-positioned in the first shaft. This preliminary preparation eliminates the need for complex deformation operations after the shafts are assembled together.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the insert penetrates into the first shaft to allow radial displacement, then radial movement is enhanced, but the structural integrity may be compromised

Engineering Contradiction:
Improveradial displacement capabilityVSAvoidstructural integrity
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The insert is nested within the first shaft, and the attachment element is nested within the insert. This nested configuration allows the components to move relative to each other while maintaining a compact structure and preserving the overall structural integrity of the assembly.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 enhanced radial and axial movement capabilities, allowing for up to six times greater misalignment compensation and simplified assembly, with improved mechanical strength and ease of use.

Implementation Method 1

a fusible zone arranged between the collar and a zone of cooperation of the element of hangs with the first cask

Methodology Applied
Scientific EffectDeformation: Deformation

Data Source

PatentEP2497965B1Attachment device provided with a crimping element that is mobile relative to a nut of the device and crimping method for the device
Publication Date: 2016.05.04 BOLLHOFF OTALU SA
  • EP2497965B1 patent drawingFigure 1~2
  • EP2497965B1 patent drawingFigure 3~4
  • EP2497965B1 patent drawingFigure 5~6

AI summary

The device (1) has a hooking element (7) arranged with a first shaft (3) of a crimping element (2) so as to form an axial abutment permitting axial displacement of a second shaft (5) of a nut (4) with respect to the first shaft, while limiting the axial displacement of the second shaft. An insert (9) is screwed into a thread of the second shaft. The insert penetrates into a section of the first shaft having inner diameter greater than outer diameter of the insert so as to allow radial displacement of the second shaft with respect to the first shaft and to form a radial abutment. The insert is a helical thread. An independent claim is also included for a method for assembling a fixation device.