Three-Piece Injection Molded Radio Housing with 3D Dovetail Interlock
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current public safety radios rely on over-molded housing assemblies that are costly and limited in material choice due to high-pressure and high-temperature over-molding processes, making it difficult to achieve specific material properties like high temperature resistance or chemical resistance.
Innovation Solution
A three-piece injection molded housing assembly comprising a front plate and two side plates with 3-D dovetail designs for interlocking, allowing for customization of materials and colors, and ease of assembly without the need for over-molded materials or processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an overmolded housing assembly is used, then the housing provides ruggedness and structural integrity, but the material choice is limited and manufacturing costs increase due to high-pressure and high-temperature overmolding processes
Solution Approach 1:
The housing is divided into multiple separate injection-molded components rather than using a single overmolded piece. Each component can be manufactured independently using standard injection molding processes, eliminating the need for high-pressure overmolding while allowing diverse material selections for different housing sections.
Solution Approach 2:
The housing assembly uses multiple different materials in separate components that are assembled together. This approach provides the same structural benefits as overmolding while allowing each component to be optimized for specific properties (heat resistance, chemical resistance, flexibility) through material selection rather than process constraints.
2Strength
If an overmolded housing assembly is used, then the housing provides structural integrity, but manufacturing complexity and costs increase
Solution Approach 1:
The housing is segmented into multiple standard injection-molded parts that are assembled using conventional fastening methods. This eliminates the complex high-pressure overmolding process while maintaining structural integrity through proper mechanical joining of components.
Solution Approach 2:
The chemical bonding process of overmolding is replaced with mechanical assembly methods such as screws, clips, or interlocking features. This substitution simplifies the manufacturing process by using well-established mechanical joining techniques instead of complex thermal and pressure-based bonding.
3Stability of the object's composition
If an overmolded housing assembly is used, then the housing provides a unified structure, but assembly and disassembly become difficult
Solution Approach 1:
The housing is designed as separate modular components that can be independently assembled and disassembled. This segmentation provides the benefits of a unified structure when assembled while allowing easy separation through standard mechanical fastening systems, unlike permanently bonded overmolded constructions.
Data Source
AI summary
A radio housing (100) is formed of a front plate (102) having screw mount receptacles (222, 223, 224, 228, 229, 230) and first and second side plates (104, 106). The first and second side plates (104, 106) have a plurality of non-symmetrical, three-dimensional (3-D), dovetail sections (108, 110, 112, 114) for aligning and capturing the screw mount receptacles (222, 223, 224, 228, 229, 230) of the front plate (102). The front plate (102) and first and second side plates (104, 106) are formed of an injection molded thermoplastic material. The three pieces (102, 104, 106) are coupled together. The three-piece injection housing formed of injunction molded materials allows the housing (100) to be customized to specific customer requests not currently available with past overmolded materials.