Magnetic USB Module Attachment for Vibration Stability and Heat Sinking
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Solution Overview
Problem
USB-based accessories often disconnect due to low friction forces, causing interruptions from vibrations or unintended contact, especially in devices like set-top boxes.
Innovation Solution
A co-processor module with a USB connector and magnets that secure the module to the device, enhancing holding power while allowing easy insertion and removal, and incorporating heat transfer through magnets to dissipate heat from the processor chip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If low friction forces are used between mating components, then ease of insertion and removal is improved, but connection stability deteriorates causing disengagement from vibration
Solution Approach 1:
The patent combines two distinct mechanisms: the USB connector interface for electrical connection and ease of insertion/removal, and magnets for secure mechanical attachment. The magnets are integrated into the USB accessory housing to work together with the USB connector, merging electrical and magnetic functions into a single unified attachment system that resolves the contradiction between easy operation and connection stability.
Solution Approach 2:
The magnets act as an intermediary mechanical attachment mechanism that supplements the USB connector. While the USB interface provides electrical connection and basic mechanical guidance, the magnets serve as an intermediate force that enhances holding power and prevents vibration-induced disengagement, allowing the USB connector to maintain its low-friction easy insertion特性 while adding stability.
2Reliability
If magnets are added to secure the USB accessory, then connection stability is improved, but device complexity increases
Solution Approach 1:
The magnets are placed locally at specific positions within the USB accessory housing where they are most effective for attachment. Rather than distributing magnetic elements throughout the entire device, the patent concentrates them in strategic locations that maximize holding power while minimizing overall structural complexity. This localized approach allows stable connection without requiring complex magnetic arrangements.
3Temperature
If heat transfer path is established through magnets, then heat dissipation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The magnetic attachment mechanism simultaneously serves dual functions: mechanical securing and thermal conduction. The same magnets that provide holding force also act as heat transfer paths from the processor to the USB accessory housing. This self-service approach means the magnetic elements perform both attachment and cooling functions without requiring separate dedicated thermal conduction structures, thereby reducing overall manufacturing precision requirements compared to dedicated thermal solutions.
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
The module provides a robust and secure connection that resists disconnection from vibrations, while effectively transferring heat away from the processor, reducing unplugging issues and improving device stability.
Implementation Method 1
the magnets are configured to hold the USB accessory to the device
Implementation Method 2
incorporating heat transfer through magnets to dissipate heat from the processor chip
Data Source
AI summary
A co-processor module for use with a set top box including an enclosure and a processor assembly contained in the enclosure. The processor assembly can include a PCB, a processor, and a USB connector. One or more magnets extend through a wall of the enclosure and are positioned to contact a surface of the set top box when the USB connector is connected to the set top box.