Magnetic Waterproof Battery Pack Mounting for Portable Refrigerators
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Solution Overview
Problem
Existing portable refrigerators lack a convenient and integrated waterproof external power source that can be easily installed and used in conjunction with the device, leading to disordered placement and inconvenience.
Innovation Solution
A waterproof external power source featuring a magnetic installation device with magnet frames and a battery-pack-fixing and current-outputting device, allowing for secure attachment to the side of the portable refrigerator, including a casing, battery pack, bracket, control circuit board, display light, sockets, and heat-dissipation aluminum plate, with sealing rings and stickers for waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the external power source is not integrated with the portable refrigerator, then the power source can be independently used, but the power source cannot be fixed to the refrigerator body, leading to disordered placement and inconvenience
Solution Approach 1:
The patent combines the external power source with the portable refrigerator by providing a fixing device that attaches the power source to the refrigerator body. The fixing device includes a fixing plate with magnetic blocks that magnetically attract to the refrigerator's metal surface, integrating two previously separate components into a unified system while maintaining independent functionality of each component.
2Reliability
If a fixing device is added to integrate the power source with the refrigerator, then the power source can be securely installed, but the structure becomes more complex
Solution Approach 1:
The patent replaces complex mechanical fastening systems with a magnetic field-based fixing mechanism. Magnetic blocks embedded in the fixing plate create magnetic attraction forces that securely hold the power source to the refrigerator body without requiring screws, bolts, or other mechanical fasteners, thereby achieving reliable fixation while maintaining structural simplicity.
Solution Approach 2:
The patent utilizes the magnetic property parameter of the fixing device to achieve secure attachment. By incorporating magnetic blocks with specific magnetic strength, the fixing device can reliably hold the power source against gravitational and operational forces while maintaining a simple structure. The magnetic field strength parameter enables the fixing mechanism to adapt to different metal surfaces of the refrigerator.
3Reliability
If the power source is made waterproof with sealing components, then the power source can withstand water exposure, but the structure and assembly become more complex
Solution Approach 1:
The patent employs a waterproof film as a thin barrier layer that seals the power source housing. This flexible waterproof membrane provides effective water protection while maintaining a simple structure that does not require complex gaskets, seals, or multi-layer protective structures. The waterproof film can be integrated into the housing design without significantly increasing structural complexity.
4Adaptability or versatility
If the power source is designed as a separate external unit, then it can be universally used with different refrigerators, but it cannot be fixed in place and becomes difficult to manage
Solution Approach 1:
The magnetic fixing device provides a universal attachment solution that can be applied to any refrigerator with a metal surface. The magnetic blocks in the fixing plate create attraction forces that work with ferromagnetic materials commonly found in refrigerator bodies, enabling universal compatibility while providing secure fixed placement. This magnetic system is more universally adaptable than mechanical fastening methods that would require specific mounting holes or structures.
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 installation and disassembly, integrates the power source with the refrigerator, ensuring secure and orderly use while maintaining waterproof integrity.
Implementation Method 1
a power source installation device for fixing a power source to the outside of the portable refrigerator, where the power source installation device is a magnetic installation device. The power source installation device includes magnet installation frames and magnets
Implementation Method 2
a lower portion of the support portion is glued and fixed to the inside of the bottom of the casing by sealant
Implementation Method 3
the second end of the bracket and the outer peripheral surface of the bracket fastener are both provided with a sealing ring
Data Source
Figure 1~2
Figure 3~4
AI summary
The present utility model relates to a waterproof external power source for a portable refrigerator, comprising: a casing; a battery pack installed in the casing; a battery-pack-fixing and current-outputting device; and a power source installation device for fixing a power source to the outside of the portable refrigerator, the power source installation device being a mechanical installation frame or a magnetic installation device. The external power source is provided with a mechanical installation frame or a magnetic installation device, such that the external power source can be installed at a side portion of the portable refrigerator, thereby facilitating the connection between the portable refrigerator and the power source and the uses thereof, preventing the external power source from being placed in a disorderly manner, and achieving easy installation and simple disassembly.