Banknote Processing Unit Guide Mechanism for Smooth Maintenance

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Solution Overview

Problem

Existing paper sheet processing devices face challenges in achieving high dimensional accuracy for the horizontal gaps between the enclosure, upper unit, and lower unit, making it difficult to fabricate and smoothly draw out the units for maintenance and reloading.

Innovation Solution

A paper sheet processing device with a unit guide mechanism that includes independent sliding mechanisms and distance adjusting portions to absorb dimensional variations, allowing the paper currency handling unit and storage unit to be smoothly pulled out and received, reducing frictional forces and simplifying the configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If high dimensional accuracy is required for horizontal gaps among enclosure, upper unit, and lower unit, then units can be drawn out smoothly, but device fabrication becomes difficult

Engineering Contradiction:
Improvesmooth drawing operationVSAvoiddimensional accuracy requirement
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The guide mechanism is designed with movable and adjustable components that can adapt to dimensional variations. The guide rails and positioning structures allow for dynamic adjustment during unit insertion and removal, compensating for manufacturing tolerances without requiring extremely precise fixed dimensions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention incorporates adjustable parameters in the guide mechanism, such as movable guide rails and positioning elements that can be adjusted to accommodate variations in unit dimensions. This allows the system to maintain smooth drawing operation across a range of dimensional tolerances.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If guide mechanism uses rails for maintaining units, then units can be maintained and transported, but frictional forces increase and smooth drawing becomes difficult

Engineering Contradiction:
Improveunit positioning stabilityVSAvoidfrictional force
Core Design Contradiction:
Stability of the object's compositionVSForce

Solution Approach 1:

The invention introduces intermediary elements such as rollers or low-friction surfaces between the guide rails and unit surfaces. These intermediaries reduce direct contact friction while maintaining positioning stability, allowing units to be drawn out smoothly without compromising guidance accuracy.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The guide mechanism replaces high-friction mechanical contact with lower-friction alternatives such as rolling contact or magnetic guidance. This substitution reduces the force required to draw units out while maintaining adequate positioning and guidance throughout the motion.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP2772888B1Paper sheet processing device
Publication Date: 2020.12.09 HITACHI OMRON TERMINAL SOLUTIONS CORP
  • EP2772888B1 patent drawingFigure 1
  • EP2772888B1 patent drawingFigure 2
  • EP2772888B1 patent drawingFigure 3~4

AI summary

A banknote processing unit (10) is provided with a housing (102), a banknote processing unit (10) and a banknote storage unit (30) which are housed within the housing (102), and a unit guide mechanism (50). The unit guide mechanism (50) is provided with a first guide unit (152) disposed horizontally along an inner wall of the housing (102), a first guided unit (162) disposed at an outer wall side of the banknote processing unit (10), and a first coupling mechanism (164). The first coupling mechanism (164) has a first distance adjusting unit (168) which modifies the distance between the first guided unit (162) and the banknote processing unit (10) when force in the horizontal direction is received as a result of movement of the banknote processing unit (10).