Riser Card Module Pivotable Limiting Unit Assembly
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Solution Overview
Problem
Current riser card modules are difficult to assemble and inefficient in space usage due to the lack of a fixing structure for expansion cards, requiring manual alignment and resulting in unnecessary space allocation for the rotation of movable fixing elements.
Innovation Solution
A riser card module with a support frame, a riser card, and a limiting unit that includes a pivotable limiting unit with spring fingers to securely fix expansion cards relative to the riser card, allowing for easy assembly and reduced housing size by restricting movement of expansion cards through rotational abutment against positioning plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a rotatable fixing element is used to fix the expansion card in the housing, then the assembly process becomes less time consuming and labor consuming, but the housing must allocate additional space to permit passage of the movable element during rotation
Solution Approach 1:
The limiting unit changes its orientation from a horizontal rotation path (parallel to carrier plate) to a vertical rotation path (perpendicular to carrier plate). This dimensional change allows the limiting unit to rotate within a smaller footprint area, reducing the horizontal space required in the housing while maintaining the same fixing functionality.
Solution Approach 2:
The limiting unit is designed as a movable component that can rotate about an axis perpendicular to the carrier plate, transitioning from a non-fixing position to a fixed position where it abuts against the positioning plate. This dynamic mechanism provides automated fixing during assembly while requiring minimal space compared to traditional rotatable elements.
2Device complexity
If no fixing structure is provided for the expansion card in the riser card, then the structure becomes simpler, but the user must manually hold and align the expansion card during assembly, causing inconvenience
Solution Approach 1:
The limiting unit is designed to automatically engage with the positioning plate of the expansion card during the insertion process. As the expansion card is inserted into the riser card, the limiting unit rotates and abuts against the positioning plate, automatically securing the card without requiring manual holding or alignment operations from the user.
Solution Approach 2:
The limiting unit acts as an intermediary mechanism between the carrier plate and the expansion card's positioning plate. It provides a simple yet effective fixing action through rotational movement, bridging the gap between the support structure and the expansion card without adding significant complexity to either component.
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 assembly of the riser card module by firmly inserting expansion cards into the riser card while reducing the overall size of the housing by utilizing a pivotable limiting unit that restricts movement, enhancing assembly efficiency and space savings.
Implementation Method 1
The limiting unit includes a limiting body connected pivotably to the carrier plate, and a plurality of spring fingers formed on the limiting body for abutting against the second surfaces of the positioning plates
Implementation Method 2
The limiting unit is connected pivotably to the carrier plate. The limiting unit is rotatable relative to the carrier plate about an axial direction which is perpendicular to a longitudinal direction of the carrier plate
Data Source
AI summary
A riser card module includes a frame body, a carrier plate connected to the frame body for abutment against first surfaces of positioning plates of fixing brackets of expansion cards, a riser card disposed on the frame body and having a plurality of expansion slots for insertion therein of the expansion cards, respectively, and a limiting unit rotatable relative to the carrier plate about an axial direction which is perpendicular to a longitudinal direction of the carrier plate for abutment against second surfaces of the positioning plates of the fixing brackets of the expansion cards so as to restrict movement of the expansion cards relative to the riser card.