Reversible I/O Sled for POS Terminal Service Access

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Solution Overview

Problem

Conventional POS terminal designs require substantial time and dexterity to access I/O peripheral ports for maintenance due to rear-facing orientation, leading to inefficiencies in service operations, especially in densely populated retail environments.

Innovation Solution

A reversible I/O apparatus where the motherboard is attached to a sled within a housing, allowing I/O ports to be oriented either front- or rear-facing, with cabling routed through a gap and legs to facilitate easy access and minimize cable management issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If I/O peripheral ports are located in the rear of the motherboard, then cabling is hidden and front access is provided for power button and LED indicators, but substantial time and dexterity are required to access I/O ports for maintenance

Engineering Contradiction:

ImproveAccess to I/O peripheral portsVSAvoidService time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent makes the I/O peripheral ports dynamically accessible by allowing the motherboard to be removed from its housing and reoriented. The ports can face either the front or rear of the housing depending on the orientation, enabling service personnel to access them from the front when needed while maintaining the conventional rear-facing orientation during normal operation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent segments the motherboard assembly from the housing, allowing the motherboard to be independently removed and reoriented. This segmentation enables the I/O ports to be accessed from different directions without requiring the entire housing to be disassembled or the device to be removed from its enclosure.

Inventive Principle:

Principle #1Segmentation

2Area of stationary object

If the housing is placed in a cabinet with limited space, then space utilization is improved, but removing the housing for service requires pulling it entirely out of the cabinet

Engineering Contradiction:

ImproveSpace utilization in cabinetVSAvoidAccess to I/O ports

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

The patent extracts the I/O peripheral ports from their fixed rear position on the motherboard and makes them accessible from the front of the housing. This allows service personnel to access the ports without removing the entire housing from the cabinet, as the ports are now reachable through the front opening of the housing.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If multiple cables are attached to the I/O peripheral ports, then connectivity is improved, but figuring out cable connections becomes problematic after disconnecting

Engineering Contradiction:

ImproveCable connectivityVSAvoidCable reconnection

Core Design Contradiction:

Adaptability or versatilityVSEase of repair

Solution Approach 1:

The patent enables service personnel to preliminarily organize and identify cable connections by accessing the I/O ports from the front before disconnecting any cables. This preliminary action allows for proper documentation or mental noting of cable positions, making reconnection significantly easier after the motherboard is reoriented or removed.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3193234B1Reversible input/output (i/o)

Publication Date: 2022.11.09 NCR VOYIX CORP

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Figure 1B
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AI summary

A reversible I/O apparatus (100 or 301) for a POS terminal (300) includes a housing (100a) with a motherboard sled (114) removable from the housing (100a) to reverse the I/O peripheral ports (110) of the motherboard (111 a) to a front orientation or a rear orientation.