PCB Bracketed FPC Stacking for BTB Connector Space Constraints
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Solution Overview
Problem
In mobile phone design, the insufficient space between holes in the PCB layout hinders the arrangement of Board To Board (BTB) connectors in a transverse direction, leading to complex assembly and disassembly processes due to the need for additional screws and low area utilization.
Innovation Solution
A circuit board component design featuring a main control board, first and second flexible printed circuits, brackets, and a fastener, where the second bracket is disposed between the first flexible printed circuit and bracket, eliminating the need for additional screws to fasten the second bracket, and allowing for efficient stacking and wiring of flexible printed circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate BTB fastening bracket is designed to press a primary FPC-BTB, then the connector can be fastened, but the assembly process and disassembly method become complicated and excessive screws are used
Solution Approach 1:
The patent combines the fastening function into the existing bracket structure that supports the FPC, eliminating the need for a separate BTB fastening bracket. The bracket integrates both FPC support and BTB connector fastening functions, reducing the number of components and simplifying the assembly process while maintaining reliable connector fastening.
2Reliability
If a separate BTB fastening bracket is designed to press a primary FPC-BTB, then the connector can be fastened, but the area utilization rate of the motherboard is low
Solution Approach 1:
The patent merges the BTB fastening function with the existing FPC support bracket, eliminating the need for a separate fastening bracket that would occupy additional motherboard area. This integration improves space utilization while maintaining secure connector fastening.
3Shape
If one FPC directly crosses another BTB connector in the layout, then the appearance requirement is prioritized, but the space between holes is insufficient
Solution Approach 1:
The patent utilizes the vertical dimension by stacking FPCs in layers, allowing the first FPC to cross the BTB connector in the transverse direction while the second FPC is arranged in a different vertical layer. This three-dimensional arrangement maintains the desired appearance and layout while providing sufficient space between holes for proper connector arrangement.
Data Source
AI summary
A circuit board component and an electronic device are provided. The circuit board component includes: a main control board, a first flexible printed circuit, a first bracket, a second bracket, a second flexible printed circuit, and a fastener. At least a part of the first flexible printed circuit is disposed on the main control board. The first bracket is located on a side of the first flexible printed circuit away from the main control board, and the first bracket is connected to the main control board. At least a part of the second bracket is located between the first flexible printed circuit and the first bracket. The second bracket abuts against the first bracket. The second bracket is connected to the first flexible printed circuit. A part of the second flexible printed circuit is located between the first bracket and the second bracket.