Medium Cassette Shock Prevention Using One-Way Bearing Damping
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Solution Overview
Problem
Financial devices with medium cassettes often experience shocks during installation, potentially damaging mechanical or electronic parts due to unintentional free falls when the cassettes are not fully installed on the cassette box.
Innovation Solution
A shock prevention apparatus is implemented, comprising a rack gear on the medium cassette and a connecting mechanism with a one-way bearing and damping gear on the cassette box, which engages to prevent free falls by applying a load only when a certain weight is applied, thus preventing shocks during installation and facilitating easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the medium cassette is freely installed on the cassette box without restraint, then the ease of operation is improved, but the reliability deteriorates due to shock damage from free fall
Solution Approach 1:
The shock prevention apparatus applies a preliminary restraining force through the rack gear and connecting mechanism before free fall can occur. The rack gear engages with the connecting mechanism to prevent the medium cassette from falling freely, thereby counteracting the harmful shock effect in advance while still allowing easy installation.
Solution Approach 2:
The rack gear and connecting mechanism serve as an intermediary between the medium cassette and the cassette box. This intermediary mechanism transmits and controls the installation motion, preventing direct free fall while maintaining ease of operation through smooth engagement.
2Reliability
If the shock prevention apparatus is engaged to prevent free fall, then the reliability is improved, but the ease of operation deteriorates due to potential hindrance during removal
Solution Approach 1:
The connecting mechanism incorporates a one-way bearing that allows rotational movement in one direction (during installation) but locks in the opposite direction (during removal). This dynamic characteristic enables the apparatus to provide shock prevention during installation while automatically releasing during removal, maintaining ease of operation.
Solution Approach 2:
The shock prevention function and removal function are segmented into different operational phases through the one-way bearing mechanism. The rack gear and connecting mechanism are structurally separated to allow independent operation during installation and removal, enabling reliable shock prevention without hindering removal ease.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively prevents shocks to the medium cassette during installation, protecting mechanical and electronic parts while allowing easy removal by ensuring the medium cassette is securely guided and loaded only when fully installed.
Implementation Method 1
a one-way bearing which allows rotation in one direction and prevents rotation in the other direction
Implementation Method 2
a damping gear which rotates along with the outer gear and has a rotation speed lower than that of the outer gear
Data Source
AI summary
Provided is a financial device, which comprises a medium cassette, a cassette box, and a shock prevention apparatus. The medium cassette accommodates a medium. The medium cassette is installed on the cassette box. The shock prevention apparatus is disposed between a portion of the medium cassette and a portion of the cassette box facing the portion of the medium cassette. The shock prevention apparatus prevents a shock from being applied to the medium cassette while the medium cassette is installed on the cassette box.