Conveying-Direction Switching Device for Bill Jam Prevention

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Solution Overview

Problem

Existing bill handling devices face issues with jamming due to the shape of intermediate conveyance paths, which increases the size of the chassis or reduces the capacity of temporary housing units for bills.

Innovation Solution

A conveying-direction switching device with pivotally supported blades that switch the direction of bills, featuring a first blade group near the center and a second blade group on the outer side, allowing for attitude correction without the need for an intermediate conveyance path, thus optimizing space and capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an intermediate conveyance path is provided to correct the attitude of bills, then jams are prevented, but the size of the chassis increases and the capacity of the temporary housing unit decreases

Engineering Contradiction:

Improvejam preventionVSAvoidchassis size

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

The patent removes the intermediate conveyance path from the system and replaces it with a conveying-direction switching gate that directly corrects bill attitudes at the delivery point. This extraction of the unnecessary intermediate path reduces chassis volume while maintaining jam prevention through the switching gate's blade mechanism

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of correcting bill attitudes in advance through an intermediate conveyance path, the patent inverts the approach by correcting attitudes at the final delivery point using the conveying-direction switching gate. This reversal eliminates the need for additional conveyance paths and their associated space requirements

Inventive Principle:

Principle #13The other way round (Inversion)

2Reliability

If an intermediate conveyance path is provided to correct the attitude of bills, then jams are prevented, but the capacity of the temporary housing unit decreases

Engineering Contradiction:

Improvejam preventionVSAvoidbill capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts the intermediate conveyance path from the system and replaces it with a compact conveying-direction switching gate. This removal increases the volume available for bill storage in the temporary housing unit while maintaining jam prevention through the switching gate's attitude correction capability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the attitude correction function with the conveying-direction switching function in a single integrated mechanism. The conveying-direction switching gate simultaneously directs bills to the correct destination and corrects their attitudes, eliminating the need for separate intermediate conveyance paths and maximizing storage capacity

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10625969B2Conveying-direction switching device and sheet handling device

Publication Date: 2020.04.21 FUJITSU FRONTECH LTD

AI summary

A conveying-direction switching device includes: a shaft; and a plurality of blades that are pivotally supported by the shaft and that switch a conveying direction of a sheet conveyed through a conveyance path to a predetermined direction toward a delivering/discharging section for the sheet included in a housing unit that houses the sheet by winding the sheet around a drum together with a belt-like member, wherein the plurality of blades include: a first blade group that is pivotally supported in a neighborhood of a center of the shaft and that is opposed to the delivering/discharging section; and a second blade group that is pivotally supported on an outer side of the shaft as compared with the first blade group.