Head-Up Display Dynamic Cover Mechanism for Screen Protection
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Solution Overview
Problem
Conventional head-up displays (HUDs) are prone to damage from external environmental factors such as sunlight and dust, compromising their durability and functionality.
Innovation Solution
A head-up display design featuring a transmission mechanism, a first cover, and a second cover that are connected and separable, allowing the covers to move together or apart to expose and protect the screen, utilizing a gear assembly and elastic elements to control the movement and maintain the screen's position, ensuring protection and operation within a limited casing space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the screen is exposed for operation, then the ease of operation is improved, but the reliability deteriorates due to damage from external factors
Solution Approach 1:
The patent implements a dynamic cover mechanism that can transition between open and closed states. The cover is driven by a transmission mechanism (including a gear assembly and elastic elements) that allows it to move from a closed protective state to an open accessible state and back. This dynamic structure enables the system to adapt its protection level based on operational needs, resolving the contradiction between screen accessibility and durability.
2Reliability
If a protective cover is added, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The cover mechanism is segmented into functional components: a first cover body, a gear assembly with interlocking gears, and elastic elements (springs). This segmentation allows each component to perform its specific function independently while working together as a unified system. The gear assembly provides controlled movement, while the elastic elements provide restoring force, simplifying the overall design compared to a fully motorized system.
Solution Approach 2:
The elastic elements (springs) in the transmission mechanism provide automatic restoring force that returns the cover to its closed protective state after being opened. This self-service mechanism eliminates the need for additional motors or actuators to close the cover, reducing device complexity while maintaining reliable protection.
3Reliability
If the casing size is increased to accommodate protection mechanisms, then the reliability is improved, but the volume of the object increases
Solution Approach 1:
The cover mechanism is nested within the existing casing structure. The gear assembly and elastic elements are integrated into the casing's internal space, utilizing otherwise wasted volume. The cover itself folds or retracts into the casing when in the protective position, ensuring that the overall external dimensions of the HUD device remain compact while still providing effective screen protection.
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
Enhances the durability of the HUD by providing a protective mechanism that prevents damage from external factors while allowing the screen to be exposed for operation, maintaining the display's functionality and safety without increasing the casing size.
Implementation Method 1
a second cover (140) and an elastic element (170), wherein the elastic element (170) is connected to the second cover (140) and provides the second cover (140) with an elastic force
Data Source
AI summary
A head-up display includes a transmission mechanism, a first cover, a second cover and a driver. The first cover is connected to the transmission mechanism and slidable with respect to the transmission mechanism. The second cover is separably connected to the first cover. The driver is configured to drive the transmission mechanism to operate. Wherein during a first state to a second state of the head-up display, the first cover and the second cover are connected to each other and move together in an opening direction; during the second state to a third state of the head-up display, the first cover is separated from the second cover.