PCB Holder Structure for Flat, Stable Board Testing
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Solution Overview
Problem
Existing printed circuit board holders fail to maintain the flatness of the circuit board during testing, leading to inefficiencies and inaccuracies in subsequent tests.
Innovation Solution
A printed circuit board holder with a plate body, limiting pieces, and locking pieces that securely hold the board by pressing against its edges and using adjustable fasteners, ensuring flatness and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional holders are used to clamp the printed circuit board, then the board can be held in place, but the board becomes bent and loses flatness
Solution Approach 1:
The holder is divided into multiple functional components: a base body with a recessed cavity for board placement, multiple independent limiting pieces positioned at different locations, and separate fastening mechanisms. This segmentation allows each component to perform its specific function without causing board deformation, as the limiting pieces constrain edges while the recessed cavity supports the board surface independently.
Solution Approach 2:
Different regions of the holder are designed with different properties: the recessed cavity provides a soft supporting surface for the board's main area, while the limiting pieces provide localized constraint at the edges. This local differentiation allows the holder to maintain board flatness in the center while providing firm edge constraints, avoiding the uniform clamping that causes bending.
2Shape
If the holder structure is made more complex to maintain flatness, then flatness is improved, but the device complexity increases
Solution Approach 1:
The recessed cavity serves multiple functions simultaneously: it provides a supporting surface for the board, defines the placement position, and prevents board movement. The limiting pieces also serve dual purposes by both constraining the board edges and defining the insertion path. This multi-functionality reduces the need for additional specialized components, maintaining simplicity while ensuring flatness.
Solution Approach 2:
The holder structure is designed to automatically maintain board flatness through its geometric configuration. The recessed cavity and limiting pieces work together to naturally constrain the board in the correct position without requiring active control mechanisms or complex adjustment systems. The structure itself provides the necessary constraints, making the system self-regulating and simple.
Data Source
AI summary
A printed circuit board holder includes a plate body and a plurality of limiting pieces. The plate body has a first surface, a second surface and a third surface. The third surface is connected between the first surface and the second surface. The first surface and the third surface together form a trench. The first surface and the second surface are of different levels. The third surface partially surrounds the trench. Two terminal edges of the third surface define a first opening therebetween. The limiting pieces are connected with the plate body and at least partially protrude from the third surface. Each of the limiting pieces and the first surface form a gap therebetween. The gaps are configured to accommodate a printed circuit board.