PCI-E Hot Plugging Mechanism Using Rotating Member

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Solution Overview

Problem

The existing PCI-E card technology requires opening the chassis cover for both insertion and removal of the connector, making hot plugging without opening the cover difficult due to perpendicular interface directions between the connector and installation panel.

Innovation Solution

A pluggable apparatus comprising a base plate, pulling strip, rotating member, and carrier plate, with sawteeth and guide mechanisms, allowing the connector to be inserted or pulled out of a slot without opening the chassis cover by transverse and longitudinal movement, facilitated by a transverse guide mechanism and a transmission mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the connector and installation panel have perpendicular interface directions, then the PCI-E card can be firmly installed in the chassis, but hot plugging without opening the chassis cover becomes difficult

Engineering Contradiction:
Improveinstallation firmnessVSAvoidhot plugging convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent introduces a rotating member that changes the operation dimension from linear insertion/removal to rotational movement. The rotating member converts the perpendicular interface direction constraint into a rotational action, allowing the connector to be inserted or removed by rotating the pulling strip 90 degrees, thus enabling hot plugging without opening the chassis cover while maintaining firm installation

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Manufacturing precision

If the chassis cover must be opened for connector insertion and removal, then the connector can be properly aligned with the slot, but the maintainability and assembly efficiency are reduced

Engineering Contradiction:
Improveconnector alignmentVSAvoidassembly efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent incorporates a guide mechanism that performs preliminary alignment of the connector with the slot before the actual insertion occurs. The guide mechanism pre-positions the connector in the correct orientation and location, ensuring proper alignment is achieved automatically during the hot plugging operation, thereby maintaining manufacturing precision while improving assembly efficiency

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent employs a dynamic pulling strip mechanism that can rotate and move to adapt to different insertion states. The pulling strip transitions from a static handle to a dynamic component that actively guides the connector through the insertion and removal processes, enabling efficient hot plugging operations without compromising alignment precision

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS9214749B2Pluggable apparatus of circuit board, and server
Publication Date: 2015.12.15 HUAWEI TECH CO LTD
  • US9214749B2 patent drawing
  • US9214749B2 patent drawing
  • US9214749B2 patent drawing

AI summary

A pluggable apparatus of a circuit board is provided, which solves the problem that hot plugging of a Peripheral Component Interconnect Express (PCI-E) card is difficult to implement. The pluggable apparatus of the circuit board includes a base plate, a pulling strip, a rotating member, and a carrier plate, where the pulling strip is movably connected to the base plate by using a transverse guide mechanism, sawteeth are formed on a body of the pulling strip, the pulling strip further includes a handle that extends out of the base plate; the rotating member is in a bending line shape; the carrier plate is movably connected to the base plate by using a longitudinal guide mechanism; and a clamping trough is disposed on the carrier plate and is configured to fasten the circuit board.