Arch Back Plate Assembly for CPU Board Load Support
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Solution Overview
Problem
Current back plate designs for electronic devices, which support circuit boards under high-pin count CPUs, deform excessively under vertical loading, failing to provide adequate horizontal support and protection, risking circuit board damage.
Innovation Solution
A back plate assembly comprising a base plate with a groove and an arch plate that converts vertical loading into horizontal tension, preventing vertical deformation by distributing the force through the arch plate's ends abutting the side walls and its middle portion not contacting the bottom wall, thus maintaining horizontal stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single back plate is used to support the circuit board, then the structure is simple, but the back plate undergoes obvious vertical elastic deformation under large loading force, failing to provide adequate horizontal support
Solution Approach 1:
The back plate is divided into two functional components: a base plate that provides horizontal support and an arch plate that converts vertical loading into horizontal tension. This segmentation allows each component to specialize in its optimal function, preventing the vertical deformation that plagued the single-plate design while maintaining structural simplicity.
Solution Approach 2:
The arch plate incorporates a curved arch structure that leverages geometric principles to convert vertical downward forces into horizontal tensile forces along the arch curve. This curvature transformation is the key mechanism that prevents vertical elastic deformation by redirecting the load path through the arch's inherent structural efficiency.
2Stability of the object's composition
If the back plate is made more rigid to prevent deformation, then vertical stability improves, but the ability to convert vertical loading into horizontal support is reduced
Solution Approach 1:
The arch plate's curved geometry serves as a force transformation mechanism, converting vertical loading into horizontal tension through the arch action. The curvature allows the structure to remain flexible enough to transform forces while maintaining the horizontal support capability, avoiding the need for excessive rigidity.
Solution Approach 2:
The combination of base plate and arch plate creates a composite structural system where each component contributes different mechanical properties. The base plate provides horizontal stability while the arch plate provides force transformation, together achieving both vertical stability and horizontal support without requiring either component to be overly rigid.
3Ease of manufacture
If a single back plate is used, then manufacturing is simple, but under large vertical loading force the back plate cannot horizontally support and protect the circuit board
Solution Approach 1:
Dividing the back plate into base plate and arch plate components allows for simplified manufacturing of each individual part while achieving superior force distribution when assembled. The segmentation enables modular production and assembly, maintaining ease of manufacture while dramatically improving horizontal support capability through the arch mechanism.
Solution Approach 2:
The arch plate's curved structure efficiently converts vertical loading into horizontal support forces through geometric transformation. This passive force conversion mechanism requires no additional actuators or complex mechanisms, maintaining manufacturing simplicity while achieving the necessary horizontal support force to protect the circuit board.
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
The solution effectively prevents vertical deformation of the back plate assembly, ensuring the circuit board remains stable and protected from excessive force, enhancing the reliability of electronic devices with high-pin count CPUs.
Implementation Method 1
the back plate will undergo an obvious elastic deformation in a vertical direction
Data Source
AI summary
A back plate assembly includes a base plate formed with a groove having a bottom wall and a pair of side walls opposite to each other in a first horizontal direction, and an arch plate assembled into the groove and having a pair of opposite ends in the first horizontal direction. A pair of end surfaces of the ends of the arch plate abut against the side walls and a part of a middle portion of the arch plate between the ends is not in contact with the bottom wall of the groove.