Head-Mounted Device Adjustment Assembly for Precise Fit
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Solution Overview
Problem
Existing intelligent head-mounted devices lack efficient and precise adjustment mechanisms for tightness, resulting in limited applicability and varying comfort levels among users with different head shapes.
Innovation Solution
A head-mounted device with an adjustment assembly that includes two adjustment push blocks, a driving apparatus, and an adjustment gear, allowing for precise adjustment of the device leg's position relative to the device host, thereby adjusting the tightness and improving wearability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no adjustment apparatus is configured, then the device structure is simple, but the range of applicability is small and wearing comfort varies among users
Solution Approach 1:
The device leg is designed with rotatable connection to the device host, allowing dynamic adjustment of the device leg's angle and position. This dynamic structure enables the head-mounted device to adapt to different head shapes and sizes, resolving the contradiction between structural simplicity and adaptability range.
Solution Approach 2:
The adjustment apparatus changes the spatial parameters of the device leg relative to the device host by rotating the device leg around the connection axis. This parameter change allows the same simple structure to provide multiple wearing configurations, expanding the range of applicability without increasing structural complexity.
2Adaptability or versatility
If manual knob adjustment is used, then the device can be adjusted, but the adjustment precision is poor and the adjusting process is complex and time-consuming
Solution Approach 1:
The manual knob adjustment mechanism is replaced with an automatic adjustment apparatus that uses a motor-driven rotating mechanism. This substitution eliminates the need for manual operation, simplifies the adjusting process, and provides more precise adjustment control through automated motorized movement of the device leg.
Solution Approach 2:
The adjustment apparatus enables the device to adjust itself automatically without requiring user intervention. The system can autonomously rotate the device leg to the appropriate position, making the adjustment process simple and quick, thereby improving ease of operation while maintaining adaptability.
3Reliability
If elastic strap or elastic deformation is used for fixation, then the device can be fixedly worn, but the range of applicability is small and pressure perception varies among users
Solution Approach 1:
Instead of relying on elastic deformation for fixation, the device uses a dynamic rotatable connection between the device host and device leg. This allows precise adjustment of the device leg's position and angle, providing stable fixation through geometric constraint rather than elastic force, thereby expanding adaptability to different head shapes while maintaining fixation reliability.
Solution Approach 2:
The fixation mechanism changes from elastic parameter (deformation amount) to geometric parameter (rotation angle and position). By controlling the spatial parameters of the device leg through rotation, the system achieves reliable fixation without relying on elastic materials, allowing adaptation to various users with different head characteristics.
Data Source
AI summary
Provided are a head-mounted device and a method for controlling a head-mounted device. The head-mounted device includes an adjustment assembly. The adjustment assembly includes an adjustment push block, a driving apparatus and an adjustment gear. Two adjustment push blocks are provided. One of the device host and the at least one of the device legs is provided with a fixed seat, and the other of the device host and the at least one of the device legs is provided with a movable seat, and each of the two adjustment push blocks is slidably disposed on the fixed seat. The adjustment gear is disposed at an output end of the driving apparatus, is located between the two adjustment push blocks, and is meshed with the two adjustment push blocks, and the two adjustment push blocks are configured to drive the device legs to rotate in opposite directions.