Interface Card Fixing Member for Tool-Free PCB Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing circuit board mounting systems face challenges with unintentional detachment of screw pillars during interface card replacement and limited space utilization due to plastic hook pillars, which restrict the configuration and stacking of circuit boards.
Innovation Solution
A circuit board device with a fixing member featuring a pillar structure, base, and detachable fixing components that provide three-axis positioning and clamping, allowing for easy interface card mounting and replacement without screws, and enabling stacked configurations by eliminating unnecessary space occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screw locking design is used to fix interface card, then fixing strength is improved, but ease of operation deteriorates due to complex detachment process and risk of unintentional detachment
Solution Approach 1:
The fixing member is segmented into a pillar structure and a detachable fixing component. The fixing component can be independently removed from the pillar structure, allowing the interface card to be replaced by simply detaching and reattaching the fixing component without affecting the pillar structure or requiring tools. This resolves the contradiction by maintaining strong fixing when attached while enabling easy replacement when detached.
Solution Approach 2:
The fixing component transitions from a static screw locking mechanism to a dynamic, easily detachable structure. The fixing component can be quickly attached and detached by hand without tools, changing the state from permanently fixed to temporarily fixed, thereby improving ease of operation while maintaining fixing strength during use.
2Ease of operation
If plastic hook pillar is used for fixing, then ease of operation is improved, but space utilization deteriorates due to space occupation under circuit board
Solution Approach 1:
The base portion that occupies space under the circuit board is extracted and removed from the fixing member design. Only the necessary pillar structure and fixing component remain, which are mounted on the surface of the circuit board. This eliminates the harmful space occupation while preserving the easy operation benefits of the hook pillar design.
Solution Approach 2:
Instead of having the fixing member extend downward under the circuit board (traditional hook pillar design), the design inverts the structure by mounting the pillar and fixing component on the surface of the circuit board. This reverses the spatial arrangement to eliminate space occupation while maintaining fixing functionality.
3Reliability
If traditional screw and screw pillar design is used, then fixing reliability is improved, but device complexity deteriorates due to multiple components and tools required
Solution Approach 1:
The fixing component integrates multiple functions into a single structure: it provides clamping force, positioning, and securing all in one element. The L-shaped configuration combines the clamping arm and positioning features into a unified component that attaches to the pillar structure, reducing the number of parts while maintaining fixing reliability.
Solution Approach 2:
The pillar structure serves multiple functions: it provides structural support, mounting for the fixing component, and positioning for the interface card. The fixing component simultaneously performs clamping and securing functions. This multi-functionality reduces overall device complexity while maintaining reliable fixing.
Data Source
AI summary
A circuit board device includes a fixing member and a circuit board having a first hole. The fixing member includes abase having a second positioning portion and an opening, a first fixing component and a pillar structure having a first pillar body and a positioning pillar extending downward from the first pillar body and having a first positioning portion and a clamping portion. The clamping portion clamps the circuit board with the first pillar body when the first positioning portion is engaged with the first hole. The base is disposed in the first hole and abuts against the positioning pillar when the second positioning portion hooks the first hole and the opening is engaged with the positioning pillar. The first fixing component is detachably inserted into the pillar structure for clamping a first interface card with the first pillar body.