Pluggable Power Module Pull-Ring Interlock for Arc Prevention
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Solution Overview
Problem
In the communications and server fields, power modules are prone to sparking and damage during plugging or removal due to the lack of hot plugging prevention designs, posing safety risks and affecting performance and reliability.
Innovation Solution
A pluggable module with a power control unit, interface unit, monitoring unit, and signal linkage unit, which includes a pull ring and signal switch, prevents sparking by sending switch signals to power control units to power on or off, ensuring the module is in a safe state during insertion and removal, and includes a damping mechanism and gear structures for secure operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the power module uses edge connectors or mating connectors to implement plugging and maintenance, then the module can be easily installed and removed, but electric arc is likely to occur during plugging or removal, causing interface damage and safety risks
Solution Approach 1:
The patent implements hot-plug prevention by requiring a two-step operation: first pressing the push button to switch the power module to power-off state, then removing the module. This preliminary power-off action before removal prevents electric arc occurrence at the interface, resolving the contradiction between ease of plugging and interface safety.
Solution Approach 2:
The push button acts as an intermediary mechanism between the user and the power module connection. It mediates the plugging/removal process by controlling the power state transition, ensuring the module is in power-off state before removal, thus preventing arc damage while maintaining operational ease.
2Productivity
If the power module allows hot plugging without prevention design, then the plugging process is simple and fast, but sparking and damage occur during plugging or removal
Solution Approach 1:
The system requires preliminary power-off action via push button before module removal. This ensures sparking prevention while maintaining relatively fast operation through a simple two-step process, resolving the contradiction between plugging speed and sparking prevention.
Solution Approach 2:
The push button mechanism implements preliminary anti-action by preemptively switching the power module to power-off state before removal occurs. This counteracts the potential harmful effect of electric arc, allowing fast plugging/removal cycles without sparking or damage.
3Ease of operation
If the pull ring is made rotatable for operation, then the module can be easily controlled, but the pull ring may fall out or be mistakenly operated
Solution Approach 1:
The pull ring is designed with dynamic characteristics - it can rotate during normal operation to enable control, but includes positioning features (protrusions and grooves) that provide stable positioning at specific angles. This dynamic design with constrained positions allows easy operation while preventing accidental disassembly or misoperation.
Data Source
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AI summary
A pluggable module is provided, relating to the field of communications device technologies. The pluggable module includes a power control unit (1), an interface unit (2), a monitoring unit (3), and a signal linkage unit (4). The power control unit (1) is connected to the interface unit (2), and the pluggable module can be inserted into an external device by using the interface unit (2). One end of a pull ring (42) is rotatably connected to a bracket (41), and the other end can trigger a signal switch (44). When the pull ring (42) is in an ON state, the signal switch (44) is triggered to send a first switch signal, or when the pull ring (42) is in an OFF state, the signal switch (44) sends a second switch signal. The monitoring unit (3) is configured to control, upon receiving the first switch signal, the power control unit (1) to be powered on, or control, upon receiving the second switch signal, the power control unit (1) to be powered off. In this way, the pluggable module can implement power-on or power-off of the power control unit (1) based on the first switch signal or the second switch signal, thereby implementing hot plugging prevention protection for the pluggable module.