Spacer for Uniform Circuit Board Pressing
Solution Overview
Problem
In existing circuit structures, uniformly pressing a circuit board onto a heat release member is challenging, often requiring a jig, which increases manufacturing costs.
Innovation Solution
A circuit structure that includes a spacer with an insertion hole for a screw, allowing the spacer to press the circuit board and heat release member, eliminating the need for a jig and reducing deformation, while an insulating adhesive layer prevents adhesive transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a jig is used to press the circuit board uniformly onto the heat release member, then manufacturing precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The spacer acts as an intermediary component between the screw and the circuit board. It distributes the pressing force from the screw across multiple contact points on the circuit board, achieving uniform pressing without requiring a complex jig. The spacer's structured design with multiple contact surfaces allows it to mediate the force application effectively.
Solution Approach 2:
The spacer is designed to be self-positioning and self-distributing force. When the screw is tightened, the spacer automatically positions itself and distributes the force through its contact surfaces with the circuit board and heat release member, eliminating the need for external jigs or complex positioning mechanisms.
2Device complexity
If the screw directly presses the circuit board, then device complexity is reduced, but manufacturing precision deteriorates due to non-uniform force distribution
Solution Approach 1:
The spacer divides the single pressing point of the screw into multiple contact points with the circuit board. By segmenting the force application area, it achieves uniform force distribution across the circuit board surface while maintaining a simple overall structure. The spacer's multiple contact surfaces create several discrete pressing points that collectively provide uniform distribution.
3Reliability
If strong force is applied when screwing, then fixation reliability is improved, but object-generated harmful factors increase due to circuit board deformation
Solution Approach 1:
The spacer serves as a cushioning element that absorbs and distributes the strong screwing force before it reaches the circuit board. By placing the spacer between the screw and circuit board, it prevents direct transmission of high-impact forces that would cause deformation, while still maintaining strong fixation through the spacer's structured contact surfaces.
Data Source
AI summary
A circuit structure includes a circuit board mounted with electronic components, a heat release member overlaid by the circuit board and releasing heat of the circuit board, a screw screwing the circuit board to the heat release member, and a spacer on which an insertion hole is formed to insert a shaft portion of the screw and the spacer is arranged between the circuit board and the screw to receive the screw. The spacer includes a board presser pressing the circuit board and a heat release member presser pressing the heat release member when the circuit board is screwed to the heat release member.