Mobile Printer Housing Layout for Reliable Wireless Power
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Solution Overview
Problem
Existing mobile printers face challenges in efficiently and reliably supplying power due to limitations in wireless power transmission, which affects their portability and operational stability.
Innovation Solution
A mobile printer design incorporating a power receiving module that uses non-contact power transmission, with a power supply unit and a housing configuration that includes a partition wall to enhance power receiving efficiency and structural strength, while minimizing the thickness of the power supply surface and maximizing the thickness of the partition wall between the power receiving module and the roll body accommodating portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power supply is used to improve portability, then ease of operation is improved, but reliability of power supply deteriorates
Solution Approach 1:
A magnetic shield is introduced as an intermediary component between the power receiving module and the roll body accommodating portion. This shield blocks magnetic field leakage that would otherwise interfere with the printing mechanism, thereby maintaining reliable power supply while preserving the wireless power supply's portability benefits
Solution Approach 2:
The magnetic shield function is extracted as a separate component from the power receiving module itself. By isolating the magnetic shielding function into a distinct element positioned between the power receiving module and roll body, the patent resolves the reliability issue without compromising the wireless power supply configuration
2Strength
If partition wall thickness is increased to improve structural strength, then strength is improved, but device complexity increases
Solution Approach 1:
The housing structure is segmented into functional zones using partition walls with varying thicknesses. The first partition wall is specifically designed with greater thickness to provide enhanced structural strength where needed, while other portions of the housing maintain standard thickness, avoiding unnecessary complexity throughout the entire structure
Solution Approach 2:
The partition wall thickness is optimized locally rather than uniformly throughout the housing. The first partition wall has a greater thickness to provide localized structural reinforcement, while other areas maintain minimal necessary thickness, thereby improving strength without proportionally increasing overall device complexity
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
This configuration improves power receiving efficiency and structural integrity, ensuring reliable non-contact power supply and enhanced portability of the mobile printer.
Implementation Method 1
a power receiving module that receives a power transmission signal based on a power supply voltage signal from an outside in a non-contact manner
Data Source
AI summary
A mobile printer includes: a roll body accommodating portion including a first partition wall and accommodating a roll body on which a recording paper is wound; a print head; a transport unit; a power supply unit, and supplying a drive voltage signal to the print head and the transport unit; and a housing including a power supply surface to which the power receiving module is fixed, and covering the roll body accommodating portion, the print head, the transport unit, and the power supply unit, in which at least a part of the first partition wall is located between the power receiving module and the roll body accommodating portion along one direction from the power receiving module to the roll body accommodating portion, and a thickness of the first partition wall along the one direction is larger than a thickness of the power supply surface along the one direction.