Portable Printer Belt Clip Layout for Contactless Charging
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Solution Overview
Problem
Existing portable printers face limitations in power receiving coil arrangement due to its positioning restriction with the battery, often requiring tools for alignment, which complicates the attachment of the belt clip.
Innovation Solution
A printing device with a power receiving module integrated into a belt clip that allows contactless power feeding, eliminating the need for precise alignment and tool-assisted attachment, and enabling flexible placement of the belt clip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power receiving coil is arranged at the same surface as the battery mounting surface, then power transmission can be achieved, but the arrangement position of the belt clip is restricted and requires tool-assisted alignment
Solution Approach 1:
The power receiving coil is moved from the same surface as the battery (2D plane arrangement) to a different surface of the housing (3D spatial arrangement). This dimensional change allows the belt clip to be positioned independently without conflicting with the power receiving coil, eliminating the need for precise alignment and tool-assisted attachment while maintaining power transmission functionality.
2Strength
If the belt clip is screw-fastened to the bottom surface, then secure attachment is achieved, but precise alignment of power transmission coil and power receiving coil is required
Solution Approach 1:
By relocating the power receiving coil to a different surface than the battery mounting surface, the invention creates spatial separation between the belt clip attachment location and the power receiving components. This eliminates the need for precise alignment between coils during assembly, reducing manufacturing precision requirements while maintaining secure attachment.
Solution Approach 2:
The invention separates the functions of belt clip attachment and power receiving into different spatial locations on the housing. The belt clip can be independently fastened to the bottom surface without interfering with the power receiving coil positioned elsewhere, allowing each component to be assembled independently with standard tolerances.
3Volume of moving object
If the power receiving coil is positioned on the same surface as the battery, then compact design is achieved, but the belt clip arrangement is restricted
Solution Approach 1:
The invention utilizes the three-dimensional space of the housing by positioning the power receiving coil on a different surface than the battery. This spatial arrangement maintains device compactness while providing flexibility in belt clip positioning, as the belt clip can now be attached to the bottom surface without conflicting with the power receiving components.
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
Facilitates easy and tool-free attachment of the belt clip while ensuring stable power reception, enhancing user convenience and portability without compromising the device's compact size.
Implementation Method 1
a belt clip attached to the case, the belt clip including a power receiving module that receives a power transmission signal from outside by contactless power feeding and feeds power to the battery
Data Source
AI summary
A printing device includes: a case having a roll paper housing unit in which a roll paper is housed; a cover coupled to the case and opening and closing the roll paper housing unit; a battery housing unit formed in the case; a battery housed in the battery housing unit; and a belt clip attached to the case, the belt clip including a power receiving module that receives a power transmission signal from outside by contactless power feeding and feeds power to the battery.