Tailgate Camera Switching for Continuous Rear View

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Solution Overview

Problem

Rear-view cameras on vehicles with open or extended tailgates lose their effectiveness in providing a clear view of the rear area, posing safety risks due to obstruction, and existing systems require significant modifications for integration.

Innovation Solution

A camera system with a rear camera secured to the tailgate for closed positions and an alternate camera positioned along the top edge for open positions, activated by mercury switches to ensure continuous rear view visibility, compatible with OEM tailgates without major modifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a rear camera is mounted to the tailgate for optimal viewing, then the camera provides clear rear area visibility when the tailgate is closed, but the camera view becomes obstructed and ineffective when the tailgate is open or extended

Engineering Contradiction:

Improvecamera view effectivenessVSAvoidcamera system adaptability to tailgate positions

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system dynamically switches between a first camera mounted on the tailgate and a second camera mounted on the vehicle body based on tailgate position. When the tailgate is closed, the first camera provides the view; when the tailgate is open, the system transitions to the second camera, ensuring continuous effective rear visibility regardless of tailgate state.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The camera system is designed with multiple cameras serving different functions based on tailgate position. The first camera serves the closed tailgate condition while the second camera serves the open tailgate condition, making the overall system universal across both operating states.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If a camera system with multiple cameras and switching mechanisms is implemented to accommodate open tailgate positions, then continuous rear view visibility is achieved, but the device complexity increases

Engineering Contradiction:

Improvecontinuous rear view visibilityVSAvoidcamera system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system uses mercury switches that automatically detect tailgate position and trigger camera switching without requiring manual intervention or complex control algorithms. The mercury switches self-activate based on gravitational orientation when the tailgate moves between closed and open positions, simplifying the control architecture.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces complex electronic sensors, microcontrollers, and software-based position detection with simple mercury switches that use gravitational mechanics to detect tailgate position. This mechanical approach reduces electronic complexity while achieving reliable automatic camera switching.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If a camera system is designed to accommodate both closed and open tailgate positions, then the system becomes adaptable to different tailgate states, but the ease of manufacture and integration into OEM tailgates decreases

Engineering Contradiction:

Improvecamera system adaptabilityVSAvoidintegration ease into OEM tailgates

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The camera system is segmented into two independent camera modules with separate mounting locations and independent wiring to mercury switches. This segmentation allows each camera to be installed and tested separately, simplifying the manufacturing and integration process while maintaining adaptability to both tailgate positions.

Inventive Principle:

Principle #1Segmentation

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Provides continuous rear view visibility regardless of tailgate position, ensuring safety and ease of integration into existing vehicles.

Implementation Method 1

one or more mercury switches to determine a position of the tailgate and activate the first camera or the second camera based on the position of the tailgate

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS20250282291A1Vehicle Camera System

Publication Date: 2025.09.11 DESIMONE STEVE

AI summary

A camera system for a vehicle that includes a rear camera configured to be secured to an outer surface of a tailgate of the vehicle, an alternate camera configured to be secured to the vehicle, and a tilt switch configured to determine a position of the tailgate to activate the rear camera or activate the alternate camera based on the position of the tailgate. The tilt switch includes a first mercury switch in electrical communication with the rear camera and a second mercury switch in electrical communication with the alternate camera. The camera system provides a main convergence of camera system wiring at a common wire connection point that is configured to electrically connect the camera system to the vehicle.