ATM Cassette Slide Rail and Connector Design

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Solution Overview

Problem

Automated teller machines (ATMs) face challenges with the high weight of banknote cassettes, requiring strong slide rails that increase bulkiness and complexity, making the configuration more cumbersome.

Innovation Solution

A medium processing device with a storage cassette, casing, loading section, slide rail, and connector, where the loading section moves between the internal space of the casing and outside, and the connector is placed inside the loading space, allowing for a simplified configuration by reducing the number of members and eliminating the need for external connectors on the storage cassette.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If strong slide rails are employed to support the heavy storage cassette (30-40 kg), then the load-bearing strength is sufficient, but the configuration becomes more bulky and complex

Engineering Contradiction:
Improveload-bearing strength of slide railVSAvoidconfiguration complexity of slide rail system
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The storage cassette is divided into multiple sections, with each section holding a subset of the total banknotes. This segmentation reduces the weight that each slide rail segment must support, allowing the use of lighter, simpler slide rail components while still accommodating the full capacity when all sections are combined

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The slide rail system is designed to move the loading section horizontally between the internal space and outside of the casing, rather than vertically. This dimensional change allows for the use of lighter slide rails since the movement is along a horizontal axis where gravitational load is minimized, reducing the required structural strength

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If the connector is placed outside the casing on the storage cassette side, then electrical connection is achieved, but the storage cassette shape becomes more complex

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidstorage cassette shape simplicity
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The connector is nested inside the loading space of the loading section, which itself is housed within the casing. This nested arrangement allows the electrical connection components to be concealed within the existing structural volumes, maintaining a simple external storage cassette shape while ensuring reliable electrical connections are established when the loading section is in its operational position

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The loading section acts as an intermediary structure that bridges the storage cassette and the external environment. By placing the connector inside the loading space rather than directly on the storage cassette, the system uses the loading section as a mediator to provide electrical connections, thereby simplifying the storage cassette design while maintaining connection reliability

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS10621831B2Medium processing device and medium transaction device
Publication Date: 2020.04.14 OKI ELECTRIC INDUSTRY CO LTD
  • US10621831B2 patent drawing
  • US10621831B2 patent drawing
  • US10621831B2 patent drawing

AI summary

A medium processing device including a storage cassette, a casing, a loading section, a slide rail, and a connector is provided. The storage cassette is configured to store a medium. The casing includes an internal space to house the storage cassette inside. The loading section supports the storage cassette when the storage cassette is in a loaded state in a loading space having an open bottom section. The slide rail is attached to the casing and to the loading section, and lets the loading section move between the internal space of the casing and outside. The connector is provided inside the loading space of the loading section, and electrically connects to the storage cassette in a loaded state of the storage cassette in the loading space.