Head-Mounted Device Support With Automatic Telescopic Fit Adjustment
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Solution Overview
Problem
Existing head-mounted smart devices require manual adjustment of the strap tightness for a comfortable fit, which is complex and time-consuming, especially when automatic shrinking is involved without prior knowledge of the user's head size.
Innovation Solution
A head-mounted device support assembly with a telescopic arm and a tightness adjustment mechanism controlled by a control module, allowing for automatic adjustment of the telescopic length based on user input or sensing mechanisms, and including safety features to prevent motor lockage at extreme positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of the strap tightness is used, then the device can be fixed on the user's head, but the wearing complexity increases and requires time-consuming manual adjustment
Solution Approach 1:
The tightness adjustment mechanism enables the device to automatically adjust and tighten the strap around the user's head without requiring manual intervention. The motor-driven telescopic arm automatically extends to the predetermined length and locks in place, allowing the device to self-adjust the tightness based on the user's head dimensions.
Solution Approach 2:
The patent replaces the traditional manual mechanical adjustment system with an automated electromechanical system. A motor drives the telescopic arm to extend and retract, substituting manual strap adjustment with automated motorized control, thereby eliminating the need for users to manually manipulate straps and buckles.
2Extent of automation
If automatic shrinking wearing is implemented, then the wearing process is automated, but the user must know their head size and repeatedly adjust until comfortable
Solution Approach 1:
The system incorporates a predetermined telescopic arm length that is pre-calculated to match average or specific user head dimensions. This preliminary setting allows the automated adjustment mechanism to achieve the correct tightness in a single action, eliminating the need for users to know their head size or perform repeated adjustments to find the comfortable fit.
3Adaptability or versatility
If the telescopic arm is driven to extend continuously, then the tightness adjustment range is increased, but the motor may lockage at extreme positions causing damage
Solution Approach 1:
The patent incorporates a limit switch that provides feedback to the control system when the telescopic arm reaches its extreme extended position. This feedback mechanism automatically stops the motor before it can over-extend, preventing motor lockage and potential damage while maintaining the full adjustable range through controlled extension and retraction cycles.
Data Source
AI summary
Provided are a head-mounted device support assembly and a head-mounted device. The head-mounted device support assembly includes a telescopic arm, a tightness adjustment mechanism, and a control module. The telescopic arm has an initial length. The tightness adjustment mechanism is connected to the telescopic arm for use in adjusting the telescopic length of the telescopic arm. The control module is electrically connected to the tightness adjustment mechanism, and controls the tightness adjustment mechanism based on an adjustment signal to drive the telescopic arm to move, so that the telescopic length is extended from the initial length or retracted to a target length. The head-mounted device support assembly can improve the wearing convenience.