Angled PCB OBD Plug-In Layout for Compact Antenna Integration
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Solution Overview
Problem
Existing plug-in devices for on-board diagnostic (OBD) ports in motor vehicles face challenges in reducing size while maintaining functionality, leading to increased risk of user interaction and space constraints.
Innovation Solution
A plug-in device design featuring a first printed circuit board (PCB) mounted to a base with a second PCB secured at an acute angle, along with an antenna housing and a cover, which reduces the device's profile and enhances user safety by minimizing the chances of accidental contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If more functions are packed into the PCBs to increase capabilities, then the functionality and information collection improve, but the device size increases making it more prone to accidental contact
Solution Approach 1:
The patent applies dimensional change by mounting the second PCB at an acute angle (e.g., 45 degrees) relative to the first PCB instead of parallel alignment. This angular arrangement allows both PCBs with their respective functions to coexist within a reduced overall device volume, effectively utilizing three-dimensional space to resolve the contradiction between functionality and device size.
Solution Approach 2:
The patent implements nesting by securing the second PCB to the first PCB in a compact, space-efficient arrangement where components are nested within the available volume. The antenna housing is also integrated into this nested structure, allowing multiple functional elements to occupy overlapping or adjacent spatial zones, thereby maximizing functionality within minimal device footprint.
2Object-affected harmful factors
If the device size is reduced to minimize accidental contact, then user safety improves, but the functionality and information collection capabilities are compromised
Solution Approach 1:
By transitioning from a planar arrangement to a three-dimensional angular configuration, the patent achieves compact device dimensions that reduce accidental contact while preserving functionality. The acute angle mounting allows sufficient functional density within a smaller envelope, simultaneously addressing safety and capability requirements.
Solution Approach 2:
The patent segments the device into multiple functional modules (first PCB, second PCB, antenna housing) arranged at different orientations and positions. This segmentation allows each module to perform its function independently while the overall compact arrangement minimizes device footprint, thereby reducing accidental contact risk without sacrificing functionality.
3Object-affected harmful factors
If a compact design is implemented to reduce device profile, then user safety improves, but the complexity of mounting and securing components increases
Solution Approach 1:
The angular mounting configuration, while appearing complex, actually simplifies the overall structure by eliminating the need for additional spacing elements or complex routing that would be required in parallel arrangements. The acute angle mounting allows direct securing of PCBs to each other and to the housing, reducing the number of discrete mounting components needed.
Solution Approach 2:
The patent merges multiple mounting functions into integrated structures. The bracket serves both as a structural support and as a mounting interface for securing PCBs and the antenna housing. This merging of functions reduces the total number of separate components and simplifies the assembly process, counteracting the apparent complexity of the angular arrangement.
Data Source
AI summary
Aspects described herein may allow for a plug-in device including a base having a plurality of apertures extending therethrough. A first PCB has a first surface defining a first plane, and a plurality of pins connected to and extending outwardly from the first surface, with each pin being received in one of the apertures of the base. A bracket secures the first PCB to the base. A second PCB is secured to the bracket, extending outwardly from the first PCB and defining a second plane, with the second plane being at an acute angle with respect to the first plane. An antenna housing is secured to the bracket and the second PCB and includes at least a first antenna. A cover is releasably secured to the base.