Spring-Loaded Roller Assembly for Telescopic Arm Alignment

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Solution Overview

Problem

The adjustment of rollers relative to their runner rails in telescopic arm assemblies is challenging due to limited accessibility with standard tools, making it difficult to achieve a tight fit and ensure smooth, accurate movement.

Innovation Solution

A rolling element assembly with two rollers rotatably fixed to a housing and a spring-loaded connecting element that clamps the rollers between the upper and lower covers of the runner rail, allowing for automatic pre-alignment and easy final adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If rollers are fitted into the interspacing of two telescopic arm segments, then smooth and frictionless relative movement is achieved, but accessibility for adjustment with standard tools becomes difficult

Engineering Contradiction:
Improvesmooth movementVSAvoidadjustment accessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The rolling element assembly is divided into separate modular components: rollers, housing, adjustment mechanism, and mounting elements. This segmentation allows the assembly to be adjusted in stages without requiring complete disassembly, improving accessibility while maintaining the tight fit for smooth movement

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment mechanism is designed to enable preliminary positioning of rollers before final tightening. This allows operators to roughly align rollers using accessible external adjustments, then secure them with bolts, making the adjustment process feasible with standard tools despite limited space

Inventive Principle:
Principle #10Preliminary action

2Reliability

If a tight fit of rollers against runner rails is ensured, then noise reduction and reliable functioning are achieved, but adjustment complexity increases

Engineering Contradiction:
Improvetaut operationVSAvoidadjustment process
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The adjustment mechanism is designed to be self-contained within the rolling element assembly, allowing operators to perform adjustments without requiring specialized tools or complex external fixtures. The mechanism serves itself by providing both adjustment capability and securing function through integrated components

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The adjustment mechanism allows dynamic adjustment of roller position during the assembly process. Operators can adjust the tightness of the fit between rollers and runner rails to achieve optimal taut operation, then secure the position with mounting bolts, transforming a static complex assembly into a dynamic adjustable system

Inventive Principle:
Principle #15Dynamics

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 solution enables easy and optimal adjustment of telescopic arm segments, ensuring rollers remain in full contact with the runner rail, reducing installation time and costs, and improving alignment quality.

Implementation Method 1

a spring-loaded connecting element, connecting the two rolling elements such that the four rollers are clamped between the upper cover and lower termination of the runner rail

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12305694B2Rolling element assembly for adjustment of telescopic arm
Publication Date: 2025.05.20 AGFA NV
  • US12305694B2 patent drawing
  • US12305694B2 patent drawing
  • US12305694B2 patent drawing

AI summary

This invention is related to a rolling element assembly that can be integrated into a telescopic arm segment assembly, comprising a pair of auto-adjusting rolling elements, that assume their optimal mounting position between two concentric telescopic arm segments, as they are spring-loaded by the presence of a connecting spring element. The final adjustment and fixation of the rolling elements (comprising each a pair of rollers) can then be subsequently be performed with high precision.