Floating Transport Modules for Thermal Expansion Compensation

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Solution Overview

Problem

Existing modular transport planes for laboratory distribution systems are susceptible to high forces caused by thermal expansion and contraction, which can disrupt the movement and alignment of specimen containers.

Innovation Solution

A modular transport plane design with transport module units that are floatingly connected to an infrastructure system via back irons, allowing two degrees of freedom for horizontal movement and horizontal force transmission between neighboring units, using a floating connection with defined play or elastic deformability to compensate for thermal expansion and contraction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If transport module units are rigidly connected to the infrastructure system, then structural stability is improved, but thermal expansion and contraction forces cause high stresses and disruptions

Engineering Contradiction:
Improvestructural stabilityVSAvoidthermal expansion forces
Core Design Contradiction:
Stability of the object's compositionVSForce

Solution Approach 1:

The patent applies the dynamics principle by replacing rigid connections with floating connections that allow dynamic adjustment. The transport module units are connected to the infrastructure system through floating connections with defined play, enabling the system to adapt to thermal expansion and contraction forces while maintaining operational stability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent applies parameter changes by introducing controlled play (gap) in the floating connections between transport module units and the infrastructure system. This parameter change allows the system to accommodate thermal dimensional changes without generating high stresses, effectively resolving the contradiction between stability and thermal force accommodation.

Inventive Principle:
Principle #35Parameter changes

2Force

If transport module units are floatingly connected to allow thermal movement, then thermal expansion forces are reduced, but horizontal force transmission between neighboring units becomes challenging

Engineering Contradiction:
Improvethermal expansion forcesVSAvoidforce transmission mechanism
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The patent applies the merging principle by integrating the force transmission function directly into the floating connection structure itself. The back irons of neighboring transport module units are designed to interact through the floating connections, combining the thermal accommodation function with the force transmission function in a single integrated mechanism, thereby avoiding additional complex force transmission components.

Inventive Principle:
Principle #5Merging (Combining)

3Object-affected harmful factors

If floating connections with defined play are used, then thermal expansion accommodation is improved, but alignment precision of specimen containers may be affected

Engineering Contradiction:
Improvethermal disruptionVSAvoidalignment precision
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The patent applies local quality by differentiating the connection characteristics at different locations. The floating connections with defined play are provided at specific locations (between transport module units and infrastructure system) where thermal accommodation is needed, while maintaining precise alignment mechanisms at critical locations for specimen container movement and positioning, thus resolving the contradiction between thermal accommodation and alignment precision.

Inventive Principle:
Principle #3Local quality

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 design minimizes disruptions from thermal forces, maintaining accurate movement and alignment of specimen containers while accommodating thermal changes, ensuring reliable operation of the laboratory distribution system.

Implementation Method 1

high forces caused by thermal expansion and/or contraction

Methodology Applied
Scientific EffectThermal expansion: Thermal Expansion

Implementation Method 2

floating connection with defined play or elastic deformability to compensate for thermal expansion and contraction

Methodology Applied
Scientific EffectElastic deformability: Elasticity

Implementation Method 3

each comprise at least one magnetically active element such as, for example, at least one permanent magnet

Methodology Applied
Scientific EffectMagnetic force: Magnetic Field

Implementation Method 4

the electromagnetic actuators can be controlled to move a carrier placed on the driving surface by applying a magnetic force to the carrier

Methodology Applied
Scientific EffectElectromagnetic force: Electromagnetic Induction

Data Source

PatentEP4016084B1Modular transport plane and laboratory distribution system
Publication Date: 2025.12.03 ROCHE DIAGNOSTICS GMBH
  • EP4016084B1 patent drawingFigure 1
  • EP4016084B1 patent drawingFigure 2
  • EP4016084B1 patent drawingFigure 3

AI summary

Modular transport plane (10) with a plurality of transport module units (1), each transport module unit (1) comprising an actuator assembly (3) with a back iron (37), and with an infrastructure system (11) arranged below the transport module units (1) and supporting the transport module units (1) on a floor, characterized in that the transport module units (1) are floatingly connected to the infrastructure system (2) to allow a relative horizontal movement between the transport module units (1) and the infrastructure system (2), wherein neighboring transport module units (1) are connected via the back irons (37) for a horizontal force transmission between neighboring transport module units (1) in response to a relative horizontal movement between neighboring transport module units (1).