Support Plate Groove Structure for Injection Molding Stability
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Solution Overview
Problem
The support plate in portable communication devices is prone to deformation or breaking during the injection molding process due to applied pressure.
Innovation Solution
A groove is provided on one side of the support plate to prevent deformation or breaking, and a protrusion is included in the mold to stabilize the support plate during the injection molding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pressure is applied during injection molding process, then the injection molded member can be formed, but the support plate tends to be bent or broken
Solution Approach 1:
The support plate is designed with a groove at the specific location where the antenna unit contacts it. This groove creates a localized stress relief zone that prevents bending and breaking at the critical contact point while maintaining the overall structural integrity of the support plate during injection molding.
Solution Approach 2:
The groove in the support plate effectively segments the continuous structure, creating distinct zones for stress distribution. This segmentation allows the support plate to accommodate the injection molding pressure without undergoing catastrophic deformation or breaking.
2Reliability
If the support plate is made with specified stiffness to protect components, then component protection is improved, but deformation and breaking during injection molding occur
Solution Approach 1:
The groove is strategically positioned at the contact point with the antenna unit, creating a localized feature that maintains overall plate stiffness while providing specific stress relief where needed. This allows the support plate to remain rigid for component protection while preventing deformation at the critical groove location during injection molding.
Data Source
AI summary
Disclosed is a portable communication device including a housing, a printed circuit board seated in the housing and mounted to a communication circuit, and a least one position adjusting groove, wherein the housing includes a support plate having at least one antenna unit operatively connected with the communication circuit, and an injection molded member surrounding at least a portion of the at least one antenna unit, wherein the support plate includes a main body in which at least a portion of the printed circuit board is seated, and at least one lead connecting the at least one antenna unit with the main body, and wherein the at least one position adjusting groove is formed at a position at which the at least one lead makes contact with the injection molded member.