Circuit Board Fixing Jigs for Vibration Resistance
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Solution Overview
Problem
Conventional electronic devices face challenges in securely fixing circuit boards in slots to ensure vibration resistance, leading to increased costs and potential scratching due to the use of guide rails.
Innovation Solution
The electronic device incorporates pairs of guide rails and fixing jigs with elastic deformation, where the fixing jigs are inserted between jig guiding portions to securely fix the circuit board, preventing vibration and scratching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the circuit board is fixed in the slot by means of a member other than a casing, then the circuit board can be securely fixed, but the number of parts of the electronic device and the number of assembly processing steps are increased
Solution Approach 1:
The guide rails and fixing jigs are integrated into a single unit structure, combining the guiding function and fixing function into one component. This reduces the number of separate parts while maintaining both the vibration resistance and ease of assembly, directly resolving the contradiction between reliability and device complexity
2Reliability
If the circuit board is fixed in the slot by means of a member other than a casing, then the circuit board can be securely fixed, but the number of assembly processing steps are increased
Solution Approach 1:
The guide rails and fixing jigs are integrated into a single unit structure, combining the guiding function and fixing function into one component. This reduces the number of separate parts while maintaining both the vibration resistance and ease of assembly, directly resolving the contradiction between reliability and device complexity
3Ease of operation
If the circuit board is fixed in the slot by the guide rails, then the circuit board can be guided during insertion, but the circuit board will be scratched due to rubbing against the guide rails
Solution Approach 1:
The circuit board contacts only the fixing jigs for support, while the guide rails are extracted from direct contact with the circuit board surface. The guide rails guide the insertion without scratching the board, as the actual contact and fixing is performed by the separate fixing jigs with larger contact area
Solution Approach 2:
The fixing jigs act as an intermediary between the guide rails and the circuit board. The guide rails transmit guiding forces to the fixing jigs, which then contact the circuit board with a larger surface area, preventing direct scratching contact while maintaining the guiding function
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 within the slot, enhancing vibration resistance and preventing damage from friction, while maintaining a reduced number of parts and assembly steps.
Implementation Method 1
The pairs of fixing jigs are elastically deformed by the pairs of jig guiding portions so that the circuit board is pressed on both its surfaces
Data Source
AI summary
In an electronic device, pairs of fixing jigs extend in a direction in which a circuit board is inserted, and the fixing jigs of each pair are disposed on the sides of both surfaces of the circuit board at a second interval longer than a first interval between a pair of guide rails provided in a slot. Pairs of jig guiding portions extend in a direction in which the circuit board is extracted, and the jig guiding portions of each pair are disposed on the sides of both surfaces of the circuit board such that the distal ends of the pair of jig guiding portions are disposed at a third interval longer than a sum of the second interval and the thicknesses of the distal ends of the pair of fixing jigs.