Circuit Board Back Plate Column Fixing With Fewer Screws
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Solution Overview
Problem
The use of screws to fix circuit boards on electronic devices is time-consuming and increases production costs.
Innovation Solution
A back plate design with a protruding column and openings of varying widths limits the movement of the circuit board, reducing the need for screws by using a mechanism buckle to secure the circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw locking is used to fix the circuit board on the back plate, then the circuit board is securely fixed, but the manufacturing time and cost increase
Solution Approach 1:
The patent extracts the screw locking mechanism from the fixing system and replaces it with a column-based mechanical interference structure. The column protruding from the back plate fits into a corresponding hole in the circuit board, eliminating the need for screws while maintaining fixing reliability and reducing manufacturing steps.
Solution Approach 2:
The column structure provides self-aligning and self-fixing functionality. The circuit board is fixed to the back plate through the mechanical interference between the column and the hole, without requiring additional fastening operations. The structure itself performs the fixing function, reducing dependency on external screw fasteners.
2Strength
If multiple screws are used to secure the circuit board, then the fixing strength is sufficient, but the number of parts and assembly complexity increase
Solution Approach 1:
The patent merges multiple screw fastening functions into a single column structure. The column integrates the positioning, support, and fixing functions that would otherwise require multiple screws. This consolidation reduces the number of parts and simplifies the assembly process while maintaining adequate fixing strength.
Solution Approach 2:
The column structure serves multiple functions simultaneously: it provides mechanical support, positional alignment, and secure fixation of the circuit board. This multi-functional design replaces the need for multiple specialized fastening components, reducing overall assembly complexity.
Data Source
AI summary
An electronic device, including a circuit board and a back plate, is provided. The circuit board has a first opening. The back plate includes a bottom portion, a protruding portion, and a column. The protruding portion protrudes from the bottom portion, and the column is located on the protruding portion. In a first direction, the column has a first outer diameter and a second outer diameter. A first width of the first opening is less than the first outer diameter and greater than the second outer diameter to limit the movement of the circuit board. The electronic device of the disclosure limits the movement of the circuit board through the column of the back plate, so as to reduce the number of screws used, thereby achieving the effects of reducing costs and/or reducing man-hours for locking the screws.