Medium Storage Box Handle Rotation Restriction Design

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Solution Overview

Problem

The reliability of medium storage boxes in medium processing devices, such as banknote pay-in/pay-out devices, is compromised due to issues with handle rotation and potential damage during attachment, detachment, and accidental falls.

Innovation Solution

A medium storage box design featuring a handle that rotates between standing and lying states with a rotation restricting portion, where the handle's arm is configured to prevent rotation in one direction, allowing it to easily return to a lying state upon falling, thus reducing the risk of damage and improving reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the handle is allowed to rotate freely between standing and lying states, then the ease of operation is improved, but the reliability deteriorates due to potential damage from uncontrolled rotation

Engineering Contradiction:

Improvehandle operationVSAvoidstorage box reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The handle is designed to be dynamically movable between standing and lying states through rotation around an axis, allowing flexible operation while maintaining structural integrity through controlled movement mechanisms

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The rotation restricting portion prevents excessive or uncontrolled rotation of the handle by restricting rotation in one direction while allowing it in the other, thereby preventing potential damage before it occurs

Inventive Principle:

Principle #9Preliminary anti-action

2Ease of manufacture

If the handle structure is simplified for easy manufacturing, then the ease of manufacture is improved, but the reliability deteriorates due to reduced protection against accidental falls

Engineering Contradiction:

Improvehandle manufacturingVSAvoidfall damage resistance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The handle arm is designed with asymmetric geometry where the upper surface portion extends at an angle relative to the arm center line, creating a configuration that naturally resists fall damage while maintaining manufacturing simplicity

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The specific geometric configuration of the arm with its angled upper surface portion acts as a pre-designed protective feature that cushions against accidental falls before damage can occur to critical components

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS10703541B2Medium storage box and medium processing device

Publication Date: 2020.07.07 OKI ELECTRIC INDUSTRY CO LTD

AI summary

A medium storage box includes a storage unit that stores a medium, a handle configured to rotate in a first direction from a first state to a second state and a second direction opposite to the first direction from the second state to the first state, and a rotation restricting portion that prevents rotation of the handle in the second direction. The handle includes a grip portion and an arm that includes an upper surface portion or a top portion and extends in an extending direction toward the upper surface portion or the top portion from the rotational axis. The arm is configured such that an end portion of an arm center line side in the upper surface portion or the top portion is separated toward a first direction side with respect to an arm center line extending from the rotational axis to the extending direction.