Display Mirror Assembly Actuator Tilt Mechanism
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Solution Overview
Problem
Existing rearview devices for vehicles lack a multi-functional design that can be easily adjusted based on user preferences and are not robust enough to provide both reflective and display functionalities effectively.
Innovation Solution
A display mirror assembly with a mount coupled to a vehicle interior, featuring a glass element that can be tilted by an actuator device to change between on-axis and off-axis positions, allowing for the activation or deactivation of a display module while maintaining a reflective view, and incorporating a glare sensor for optimal visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display module is integrated into the rearview mirror assembly, then the functionality is enhanced by providing both reflective and display modes, but the device complexity increases due to additional components and mechanisms required
Solution Approach 1:
The patent combines the reflective mirror function and display module into a single integrated rearview mirror assembly. The display module is positioned behind the glass element and can be selectively activated to provide rearward viewing capability, merging two separate functions (reflective viewing and electronic display) into one device.
Solution Approach 2:
The rearview mirror assembly is designed to perform multiple functions: it can operate as a traditional reflective mirror, switch to display mode showing camera-captured rearward views, and provide glare reduction. The actuator device enables the glass element to be tilted to different positions, allowing the same assembly to serve different viewing modes.
2Ease of operation
If an actuator device is added to tilt the glass element for switching between on-axis and off-axis positions, then the ease of operation is improved by allowing user adjustment, but the device complexity increases due to additional mechanical components
Solution Approach 1:
The glass element is made dynamically adjustable through the actuator device, which can tilt the glass element between on-axis and off-axis positions. This dynamic capability allows the mirror to switch between different viewing modes (reflective vs. display mode) based on user preference or driving conditions.
Solution Approach 2:
The actuator device is operably coupled to the glass element and can be controlled to automatically or manually adjust the glass position. The system provides self-service functionality where the mirror assembly can be adjusted without requiring external mechanical linkages or complex control systems.
3Reliability
If the glass element is tilted to an off-axis position to deactivate the display module, then the reliability is improved by maintaining reflective viewing capability, but the manufacturing precision requirements increase due to precise positioning needs
Solution Approach 1:
The rearview mirror assembly is segmented into distinct functional components: the glass element, display module, actuator device, and mounting structure. This segmentation allows each component to be optimized independently while maintaining overall system reliability through their coordinated operation.
Solution Approach 2:
The actuator device serves as an intermediary mechanism between the control system and the glass element. It provides precise control over the glass element's position, enabling reliable switching between viewing modes while isolating the complexity of precise positioning control from the overall system design.
4Object-affected harmful factors
If a glare sensor and light pipe are incorporated to detect and minimize glare, then the object-affected harmful factors are reduced by improving visibility, but the device complexity increases due to additional sensing components
Solution Approach 1:
The glare sensor detects glare conditions and provides feedback to the control system. Based on this feedback, the system can automatically adjust the glass element position or activate the display module to reduce glare, creating a closed-loop control system that responds to actual driving conditions.
Solution Approach 2:
The patent replaces purely mechanical glare reduction methods (such as manual mirror adjustment) with an electronic sensing and control system. The glare sensor and light pipe detect optical conditions, and the actuator device electronically controls the glass element position, substituting mechanical user adjustment with automated optical sensing and actuation.
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
The solution provides a robust, user-adjustable rearview device that can toggle between reflective and display modes, enhancing user experience by minimizing glare and improving visibility during nighttime driving conditions.
Implementation Method 1
A display mirror assembly... featuring a glass element that can be tilted by an actuator device to change between on-axis and off-axis positions, allowing for the activation or deactivation of a display module while maintaining a reflective view
Implementation Method 2
An actuator device is disposed on a bottom surface of the housing and is operably coupled with the glass element. The actuator device is adjustable to tilt the glass element in one direction, thereby moving the glass element to an off-axis position
Implementation Method 3
A glare sensor is operably coupled with the glass element and is in optical communication with a light pipe that is exposed to an exterior of the display mirror assembly
Data Source
AI summary
A display mirror assembly having a mount operably coupled to a vehicle interior. The mount includes one of a ball and a socket extending forwardly therefrom. An engagement plate is pivotally coupled with the mount via the other of a ball and a socket extending rearwardly from the engagement plate. The engagement plate includes a first support member and a second support member pivotally coupled to the first support member. A carrier plate is operably coupled with the engagement plate. The carrier plate supports a rear housing on a rear portion thereof. A glass element is operably coupled with the carrier plate. A display module is configured to be turned to an on state and an off state. An actuator device is disposed on a bottom surface of the housing and is operably coupled with the glass element. The actuator device is adjustable to tilt the glass element.