PCB Fixing Structure with Opposing Hook Elements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for fixing a printed circuit board assembly in liquid crystal displays, such as using screws or viscose glue, result in high material and manpower costs.
Innovation Solution
A fixing structure comprising oppositely disposed first and second bending elements with hook openings on a metal back plate, which securely fastens the printed circuit board assembly, reducing material and labor costs while enabling grounding connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw or viscose glue is used for fixing the printed circuit board assembly, then the fixing reliability is improved, but the material cost and manpower cost increase
Solution Approach 1:
The fixing structure merges the back plate and bending elements into a single integrated component. The bending elements are formed as continuous structures with the back plate, eliminating the need for separate fixing components, screws, or glue. This integration reduces part count, assembly steps, and material costs while maintaining fixing reliability through the inherent structural design.
Solution Approach 2:
The bending elements utilize their own elastic deformation to achieve the fixing function. When the printed circuit board assembly is installed, the bending elements automatically deform and lock into position, providing self-fixing capability without requiring external fasteners or adhesives. This self-service mechanism reduces manpower cost and simplifies the assembly process.
2Stability of the object's composition
If screw or viscose glue is used for fixing the printed circuit board assembly, then the fixing stability is improved, but the assembly time increases
Solution Approach 1:
The bending elements are pre-formed with specific curvature and elasticity during manufacturing, so that when the printed circuit board assembly is installed, they automatically deform to the correct shape and lock into position. This preliminary preparation eliminates the need for on-site assembly operations such as screwing or gluing, significantly reducing assembly time while maintaining fixing stability.
Solution Approach 2:
The patent replaces traditional mechanical fastening systems (screws, nuts, bolts) and chemical bonding systems (glue) with an elastic deformation-based fixing mechanism. The bending elements use their own elastic properties to provide both the fixing action and the stability, eliminating complex assembly operations and reducing assembly time.
3Reliability
If metal components are used for the back plate and bending elements, then the grounding connection is improved, but the manufacturing complexity increases
Solution Approach 1:
The back plate and bending elements are manufactured as a single integrated metal component, eliminating the need for separate grounding connections. The continuous metal structure provides inherent electrical conductivity and grounding capability throughout the entire assembly, improving grounding connection reliability without adding complex electrical connection systems.
Solution Approach 2:
The metal back plate and bending elements serve multiple functions simultaneously: structural support, electrical grounding, and fixing mechanism. This multi-functionality eliminates the need for separate grounding wires or connection components, reducing manufacturing complexity while improving grounding connection reliability.
Data Source
AI summary
The liquid crystal display comprises a display panel, a flexible circuit board, a printed circuit board assembly, and a fixing structure which comprises a back plate comprising a first bending element comprising a first vertical surface being connected to the back plate and a first flat surface, an edge of the first flat surface being connected to the first vertical surface so that the first vertical surface and the first flat surface forming a first hook element opening and a second bending element comprising a second vertical surface being connected to the back plate and a second flat surface, an edge of the second flat surface being connected to the second vertical surface so that the second vertical surface and the second flat surface forming a second hook element opening, the second hook element opening and the first hook element opening being faced to an opposite direction.