Pivoting Head-Mounted Display for Seamless View Switching
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Solution Overview
Problem
Conventional head-mounted display devices require users to remove the device from their head to switch between virtual and real views, causing inconvenience and reducing user desire to utilize the technology.
Innovation Solution
A head-mounted display device with a wearable device and a pivoting mechanism that allows the display mainframe to be rotated on or away from the user's sight line, enabling convenient and rapid switching between virtual and real views by using a shaft rod, fixed cam, motion cam, and stopper mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the display mainframe is fixed on the wearable device, then the structural stability is improved, but the ease of operation deteriorates because the user cannot switch between virtual and real views without removing the device
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed connection between the wearable device and display mainframe into a pivoting connection. The pivoting mechanism allows the display mainframe to rotate relative to the wearable device, enabling the user to switch between virtual and real views by simply rotating the mainframe. This resolves the contradiction by making the structure dynamically adjustable rather than statically fixed, maintaining stability when needed while enabling easy operation when view switching is required.
2Ease of operation
If the display mainframe is made movable to enable view switching, then the ease of operation is improved, but the device complexity increases due to the addition of pivoting mechanisms
Solution Approach 1:
The patent applies segmentation by dividing the connection system into distinct modular components: the wearable device, the display mainframe, and the pivoting mechanism. The pivoting mechanism itself is segmented into the pivotal sleeve, shaft rod, and stopper components. This modular segmentation allows each component to perform its specific function independently, making the overall system easier to manufacture, assemble, and maintain while achieving the desired ease of operation for view switching.
3Reliability
If the pivoting mechanism includes multiple components (shaft rod, fixed cam, motion cam, stopper), then the reliability of the pivoting function is improved, but the device complexity increases
Solution Approach 1:
The patent employs dynamics by implementing a cam-based pivoting mechanism where the motion cam rotates along with the display mainframe and interacts with the fixed cam and stopper. This dynamic cam mechanism provides reliable positioning and control of the pivoting motion through the interaction between moving and stationary cam surfaces, ensuring consistent and reliable view switching while maintaining a relatively compact structure.
Solution Approach 2:
The pivoting mechanism incorporates a stopper that automatically limits the rotation range of the shaft rod, providing self-regulating functionality. The cam and stopper arrangement creates automatic positioning and stopping points without requiring external control systems, allowing the mechanism to self-regulate its operation and maintain reliability through inherent mechanical constraints rather than complex electronic controls.
Data Source
AI summary
A head-mounted display device includes a wearable device, a display mainframe and a pivoting mechanism. The display mainframe includes a cover body and a display-receiving portion connected to one side of the cover body. The cover body is provided with a light transmissive area and an accommodation area in which the light transmissive area is arranged between the accommodation area and the display-receiving portion. The pivoting mechanism is pivotally connected to the wearable device and the display mainframe.