Circuit Board Fixing Jigs for Vibration Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic devices with circuit boards inserted into slots lack sufficient vibration resistance, as the fitted connectors and soldered portions are subjected to loads during casing or board vibrations.
Innovation Solution
The electronic device incorporates pairs of guide rails, fixing jigs, and jig guiding portions to securely fix the circuit board within the slot, utilizing elastic deformation to sandwich the board and prevent vibration-induced loads on connectors and soldered areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the circuit board is fixed by fitting connectors together, then the circuit board can be easily installed and connected, but the fitted portion and soldered portions are subjected to loads during vibration
Solution Approach 1:
The fixing mechanism is segmented into multiple independent fixing jigs (first fixing jig and second fixing jig) positioned at different locations on the circuit board. Each fixing jig independently secures a different portion of the board, distributing the vibration loads across multiple points rather than concentrating them at the connector fitted portion.
Solution Approach 2:
The fixing jigs extend in the extraction direction (perpendicular to the insertion direction), providing fixing force from a different dimension than the connector insertion. This dimensional change allows the circuit board to be secured against vibration without compromising the connector fitting operation.
2Manufacturing precision
If guide rails are provided to guide insertion, then the circuit board insertion is guided properly, but the structure becomes more complex
Solution Approach 1:
The guide rails and fixing jigs are merged into a single integrated structure formed as one piece. The guide rails extend from the fixing jigs, combining the guiding function and fixing function into a unified component, thereby reducing overall structural complexity while maintaining both functions.
Solution Approach 2:
The guide rails serve dual functions: they guide the circuit board during insertion and also serve as part of the fixing structure when combined with the fixing jigs. This multi-functionality reduces the need for separate components, simplifying the overall structure.
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
This configuration effectively secures the circuit board, enhancing vibration resistance by ensuring it is fixed in multiple directions, thereby preventing loads from being applied to the connectors and soldered areas, thus improving stability and reliability.
Implementation Method 1
the pairs of jig guiding portions provided integrally with the circuit board via the faceplate elastically deform the pairs of fixing jigs toward both surfaces of the circuit board
Data Source
AI summary
In an electronic device, pairs of fixing jigs are provided on an extraction side of pairs of guide rails and extend in an extraction direction respectively along both ends of a circuit board. The fixing jigs of each pair are disposed on the sides of both surfaces of the circuit board such that their distal ends are spaced at a second interval longer than a first interval. Pairs of jig guiding portions are provided on a faceplate and extend in an insertion direction respectively along both ends of the circuit board. The jig guiding portions of each pair are disposed on the sides of both surfaces of the circuit board such that their distal ends are spaced at a third interval longer than the sum of the second interval and the thicknesses of the distal ends of the pair of fixing jigs.