AR Wearable Hinge Pulley Structure for Constant Temple Fit
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Solution Overview
Problem
Existing wearable electronic devices, particularly head-mounted displays, face challenges in providing stable and comfortable fit for users of different body sizes due to inconsistent temple width adjustment and varying angles, leading to discomfort and unreliable wearing experience.
Innovation Solution
A wearable electronic device with adjustable temple members connected by a hinge mechanism that maintains a constant angle and clamping force through a pulley and spring system, allowing users to adjust the width according to their body size, ensuring consistent wearing comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the temple member width is adjusted to fit different body sizes, then the adaptability is improved, but the angle between the temple member and body portion varies causing discomfort
Solution Approach 1:
The hinge mechanism is designed to dynamically maintain a constant angle between the temple member and body portion during width adjustment. The rotational connection allows the temple member to move while the angle-maintaining mechanism ensures the angle remains constant, providing consistent wearing comfort across different width settings.
Solution Approach 2:
The mechanism changes the operational parameters by decoupling the width adjustment from the angle variation. Through the pulley and wire system, the temple member width can be adjusted while the angle parameter is kept constant, resolving the contradiction between adaptability and comfort.
2Adaptability or versatility
If the temple member width is adjusted, then the adaptability is improved, but the clamping force varies causing discomfort
Solution Approach 1:
The spring mechanism provides dynamic clamping force that adapts to different temple widths. As the temple member width is adjusted, the spring automatically adjusts its compression or extension to maintain a substantially constant clamping force on the user's head.
Solution Approach 2:
The spring mechanism changes the force parameter in response to width adjustments. By utilizing spring elasticity, the system compensates for width variations to keep the clamping force parameter constant, ensuring consistent wearing comfort.
3Device complexity
If a simple hinge connection is used for temple member adjustment, then the device complexity is reduced, but the angle and force cannot be maintained constant
Solution Approach 1:
The pulley and wire system acts as an intermediary mechanism between the simple hinge connection and the temple member. This intermediary transmits and controls the movement to maintain constant angle and force, adding only moderate complexity while achieving the desired stability.
Solution Approach 2:
The patent replaces a purely mechanical hinge connection with a hybrid system incorporating spring mechanisms and pulley systems. This substitution transforms the simple mechanical connection into a more sophisticated mechanism that can maintain constant angle and force parameters.
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 device maintains a constant angle and clamping force during width adjustment, providing consistent wearing comfort regardless of user body size, enhancing stability and usability.
Implementation Method 1
a spring configured to maintain a constant clamping force on the temple member
Implementation Method 2
a pulley system including a first pulley fixed to the body portion and a second pulley fixed to the temple member, and a wire surrounding the first pulley and the second pulley
Data Source
AI summary
A wearable electronic device is provided. The wearable electronic device includes a body portion having a glass mounting part, a temple member, and a hinge rotatably connecting the temple member to the body portion, wherein the hinge includes a hinge housing which is rotatably connected to the body portion through a first shaft and rotatably connected to the temple member through a second shaft, a first pulley fixed to the body portion and allowing the first shaft to pass therethrough, a second pulley fixed to the temple member and allowing the second shaft to pass therethrough, and a first wire surrounding at least a portion of each of the first pulley and the second pulley.