Segmented Keyboard Plastic Board to Prevent Molding Deformation
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Solution Overview
Problem
Large plastic bottom boards in keyboards, formed by injection molding, often suffer from wave-like deformation due to their size, affecting manufacturing quality and structural precision.
Innovation Solution
The plastic board is divided into regions using transverse dividing slots, allowing for sectional molding instead of a single large molding area, with stop slots to prevent deformation and hook arms for easier assembly, enhancing precision and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a large plastic bottom board is formed by injection molding, then the keyboard achieves lightweight and portable design, but the bottom board suffers from wave-like deformation affecting manufacturing quality and structural precision
Solution Approach 1:
The bottom board is divided into multiple smaller board regions through dividing slots, with each region having its own feeding point for injection molding. This segmentation prevents wave-like deformation by limiting the molding area of each section while maintaining the overall large area of the bottom board for lightweight design.
2Weight of moving object
If a large plastic bottom board is formed by injection molding, then the keyboard achieves lightweight and portable design, but the manufacturing quality is affected due to partial structural deformation
Solution Approach 1:
The bottom board is divided into multiple smaller board regions through dividing slots, with each region having its own feeding point for injection molding. This segmentation prevents wave-like deformation by limiting the molding area of each section while maintaining the overall large area of the bottom board for lightweight design.
Data Source
AI summary
A plastic board suitable for a keyboard having first and second keyswitch sets includes first and second board portions and transverse dividing slots. The first and second board portions have first and second mounting areas respectively corresponding to the first and second keyswitch sets. First dividing slots of the first board portion extend sequentially along a periphery of at least one first mounting area to separate first and second board regions. Second dividing slots of the second board portion extend sequentially along a periphery of at least one second mounting area to separate third and fourth board regions. The transverse dividing slots are formed separately between the first and second board portions to separate the first and third board regions and separate the second and fourth board regions. The first, second, third, and fourth board regions have a feeding point, respectively, to be formed by an injection molding process.