Printer Pivoting Upper Module for Space-Constrained Maintenance Access

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Solution Overview

Problem

Printers built into devices like kiosks or ATMs lack sufficient space for users to access rear or side portions for maintenance due to narrow installation areas, preventing effective access without additional surrounding space.

Innovation Solution

A printer design with a pivotable upper module and dual lock mechanism, operated by a link lever, allowing access to side and rear portions without requiring hand insertion, using first and second lock portions and a biasing member to manage module opening and closing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the printer is built into a narrow device like a kiosk or ATM, then the installation area is reduced, but the user cannot access rear or side portions for maintenance

Engineering Contradiction:
Improveinstallation areaVSAvoidmaintenance access
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The printer is divided into an upper module and a lower module that can be separated from each other. The upper module can be opened independently to provide access to the rear and side portions of the printer, while the lower module remains in place within the narrow device. This segmentation allows maintenance access without requiring the entire printer to be removed or requiring additional surrounding space.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper module is designed with a pivotable support that allows it to rotate between a closed state (when not in use) and an open state (when maintenance is needed). This dynamic structure enables the upper module to be opened to access internal components, then returned to a closed position that maintains the compact appearance and space-saving design when built into narrow devices.

Inventive Principle:
Principle #15Dynamics

2Ease of repair

If the upper module is made pivotable for maintenance access, then maintenance capability is improved, but the risk of unintended opening during operation increases

Engineering Contradiction:
Improvemaintenance capabilityVSAvoidoperation stability
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

A lock portion is provided that automatically locks the upper module in the closed state during normal operation. This preliminary locking action prevents unintended opening before any operational issues arise. The lock can be deliberately released when maintenance is needed, but remains engaged during normal use to ensure operational stability and prevent accidental access.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If a lock mechanism is added to prevent unintended opening, then operation stability is improved, but the device complexity increases

Engineering Contradiction:
Improveoperation stabilityVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The lock portion is designed to automatically engage and lock the upper module in the closed state without requiring external intervention or complex control systems. The locking mechanism uses the natural positioning of the upper module when closed to trigger automatic engagement, eliminating the need for motors, sensors, or complex control circuits. This self-locking approach maintains operational stability while minimizing added complexity.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12358311B2Printer
Publication Date: 2025.07.15 TOSHIBA TEC KK
  • US12358311B2 patent drawing
  • US12358311B2 patent drawing
  • US12358311B2 patent drawing

AI summary

A printer includes upper and lower modules that are pivotably attached to each other. A first lock portion includes a first fastener on the lower module and a first holding portion on the upper module with a first fastener holding position and a first fastener release position. A second lock portion includes a second fastener on the upper module and a second holding portion on the lower module with a second fastener holding position and a second fastener release position. A link lever is on the upper module and reciprocates back-and-forth. When moved backwards, the link lever moves the first and second holding portions to the respective release positions.