Circulation Unit Guide Mechanism for Banknote Storage Maintenance

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Solution Overview

Problem

In circulation-type banknote storage units, user-side recovery and maintenance are hindered by complex operations required to address paper jams, leading to decreased operational efficiency and increased maintenance costs due to the need for professional intervention.

Innovation Solution

A paper sheet storage unit with a detachable guide mechanism allows for swift attachment and detachment of the circulation unit, utilizing a guide member and guided member system to facilitate easy replacement and maintenance, reducing the number of screws needed and simplifying the process of replacing faulty units.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the circulation drum unit is fixed to the casing using many screws, then the structural stability is improved, but the ease of repair deteriorates because users cannot easily disassemble and reassemble the unit on the user side

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of repair
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The circulation drum unit is divided into separable components that can be detached from the casing without requiring complete disassembly. The guide mechanism enables the circulation drum unit to be segmented into removable modules, allowing users to access and repair jammed banknotes without detaching multiple screws.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The guide mechanism provides dynamic guidance during the attachment and detachment process, allowing the circulation drum unit to be smoothly inserted and removed. This dynamic system replaces static screw fixation with a movable guide structure that maintains stability during operation while enabling easy removal when needed.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If manual rotation of the circulation drum is used to resolve paper jams, then the ease of operation is improved, but the reliability deteriorates because the tape may become excessively loosened, twisted, and distorted

Engineering Contradiction:
Improveease of operationVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The circulation drum unit can be extracted from the casing and removed entirely when a paper jam occurs. This allows the jammed banknotes to be accessed and removed directly from the tapes without rotating the circulation drum, preventing tape distortion while maintaining ease of operation.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The detachable guide mechanism allows the circulation drum unit to be preliminarily removed from the casing before attempting to resolve the jam. This preliminary action of removing the unit prevents the harmful effect of tape distortion that would occur if manual rotation were attempted on a fixed unit.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If the circulation drum unit is fixed with many screws, then the manufacturing precision is improved, but the productivity deteriorates because maintenance requires professional intervention and reduces operational efficiency

Engineering Contradiction:
Improvemanufacturing precisionVSAvoidproductivity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The circulation drum unit is segmented into removable modules guided by the guide mechanism, maintaining manufacturing precision through precise guidance surfaces while enabling quick user-side replacement. This segmentation allows maintenance to be performed without professional intervention, preserving productivity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The guide mechanism enables users to perform maintenance themselves by simply detaching and reattaching the circulation drum unit. This self-service capability eliminates the need for professional intervention, maintaining manufacturing precision through the guided mechanism while significantly improving productivity by allowing immediate recovery of operational efficiency.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3757047B1Paper sheet accommodation unit and paper sheet processing device
Publication Date: 2024.05.01 JAPAN CASH MASCH CO LTD
  • EP3757047B1 patent drawingFigure 1(a)~1(b)
  • EP3757047B1 patent drawingFigure 2(a)~2(b)
  • EP3757047B1 patent drawingFigure 3(a)~3(b)

AI summary

Provided is a circulation-type paper sheet storage unit equipped with circulation units in a casing, enabling to swiftly take measures and perform recovery processing on the user side when the circulation unit malfunctions. The paper sheet storage unit includes circulation units (100 and 200) that are accommodated in a casing 60 to receive paper sheets transported into the casing by operating upon reception of a drive force from a motor and feed paper sheets stored therein to outside of the casing. The casing includes guide members 620 that serve as a guide at the time of attaching or detaching the circulation unit with respect to the casing, and the circulation unit includes guided members (655A, 675A, 655B, and 675B) which respectively detachably engage with the guide member, and are guided to an installation completion position along the guide members in an engaged state.