Adjustable Fastening Assembly for Misaligned Hole Positioning

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Solution Overview

Problem

Existing fastening assemblies fail to effectively connect parts with holes that have machining errors, resulting in misalignment and inability to achieve preset positions.

Innovation Solution

A fastening assembly comprising a housing, positioning body, adjustment member, and motion converter, where the adjustment member's rotation drives the positioning body to move relative to the housing, utilizing threaded structures and inclined surfaces to compensate for positional deviations, allowing for precise alignment and connection of parts despite initial misalignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional fastening assemblies are used to connect parts with holes, then the connection is simple and direct, but machining errors cause the holes to deviate from preset positions, resulting in misalignment and inability to achieve preset positions

Engineering Contradiction:
Improvepositioning precisionVSAvoidfastening assembly structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The fastening assembly incorporates adjustable components that can dynamically adapt to positional deviations. The connection mechanism allows for movement and adjustment during assembly, enabling the system to compensate for machining errors and achieve proper alignment between parts despite initial position deviations.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The fastening assembly enables parameter changes in the connection geometry to accommodate varying hole positions. By allowing adjustment in position and orientation parameters, the system can adapt to machining tolerances and ensure correct alignment even when holes deviate from their preset positions.

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If the fastening assembly allows adjustment for positional deviations, then alignment precision is improved, but the structure becomes more complex with additional components

Engineering Contradiction:
Improvealignment precisionVSAvoidassembly structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The fastening assembly is divided into modular functional components, each responsible for a specific aspect of alignment and connection. This segmentation allows the complex alignment function to be achieved through coordinated simple modules, making the overall system more manageable and easier to assemble despite the enhanced functionality.

Inventive Principle:
Principle #1Segmentation

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

Enables the connection of parts with holes positioned deviantly from preset positions, ensuring they align correctly and securely, enhancing assembly precision and reliability.

Implementation Method 1

utilizing threaded structures and inclined surfaces to compensate for positional deviations

Methodology Applied
Scientific EffectThreaded mechanism: Screw

Implementation Method 2

utilizing threaded structures and inclined surfaces to compensate for positional deviations

Methodology Applied
Scientific EffectInclined plane mechanism: Inclined Plane

Data Source

PatentUS20250010414A1Fastening assembly
Publication Date: 2025.01.09 ILLINOIS TOOL WORKS INC
  • US20250010414A1 patent drawing
  • US20250010414A1 patent drawing
  • US20250010414A1 patent drawing

AI summary

The present disclosure discloses a fastening assembly having a housing, a positioning body, an adjustment member, and a motion converter. The housing defines a housing cavity. The positioning body is accommodated inside the housing cavity and is movable relative to the housing in a first direction. The adjustment member is rotatable around an axis of the adjustment member relative to the housing. The motion converter is configured such that the rotation of the adjustment member around the axis of the adjustment member drives the positioning body to move relative to the housing in the first direction. The fastening assembly of the present disclosure can connect a first part to a second part with a first part hole and a second part hole positioned with deviations from preset positions, and enable the connected first and second parts to be in the preset positions.