VR Headset Strap Dial Adjustment Mechanism
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Solution Overview
Problem
Existing electronic devices for virtual reality (VR), augmented reality (AR), and mixed reality (MR) lack ease of tightening and loosening, durability in the tightening mechanism, and comfort for wear on the user's head.
Innovation Solution
An electronic device design featuring a goggle frame with a display, a front band, a strap with a rack gear, a rear band with a rotatable gear and dial system, and an elastic member for easy adjustment and enhanced durability, allowing for easy wear and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tightening mechanism is added to the electronic device, then the ease of tightening and loosening is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical tightening mechanisms with a dial-based rotational adjustment system. The dial (3340) rotates to drive the gear (2310) and rack gear (2421, 2441) mechanism, providing intuitive tightening control without complex fasteners or tools.
Solution Approach 2:
The elastic member (SP) automatically returns the rotor (2330) and dial (3340) to their initial positions after adjustment, and the gear-rack mechanism self-locks during tightening, reducing the need for additional locking components or complex control systems.
2Reliability
If a durable tightening mechanism is implemented, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent uses a dynamic gear-rack mechanism where the gear (2310) rotates and engages with rack gears (2421, 2441) to convert rotational dial movement into linear strap tensioning. This dynamic mechanical advantage provides durable, tool-free tightening without complex electronic controls.
Solution Approach 2:
The elastic member (SP) pre-loaded between the rotor (2330) and base (2320) provides cushioning and return force, protecting the mechanism from shock loads and ensuring reliable reset functionality without additional damping components.
3Ease of operation
If the dial is exposed to the outside for easy operation, then the ease of operation is improved, but the reliability decreases due to potential damage
Solution Approach 1:
The dial (3340) is nested within the rear band (230) structure, with coupling teeth (2342) that engage with coupling protrusions (2332) on the rotor. This nested arrangement allows external access for operation while providing structural protection through the integrated band housing.
Solution Approach 2:
The gear (2310) and rotor (2330) act as intermediary components between the externally accessible dial (3340) and the internal tightening mechanism. These intermediaries transmit force while protecting the internal components from direct external exposure and damage.
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 solution enables easy tightening and loosening, enhances durability of the adjustment mechanism, and ensures comfortable wear on the user's head, improving user experience in VR, AR, and MR environments.
Implementation Method 1
an elastic member installed between the base and the rotor and providing an elastic force to the rotor
Implementation Method 2
a rotatable gear mounted on the support and engaged with the rack gear
Implementation Method 3
a rotatable gear mounted on the support and engaged with the rack gear
Implementation Method 4
the dial includes a coupler facing the rotation body and coupling teeth positioned between the rotation body and the coupler, protruding from the coupler, and engaged with the coupling protrusion
Data Source
AI summary
An electronic device is disclosed. An electronic device of the present invention may comprise: a goggle frame having at least one opening provided in the front surface thereof; a display positioned in front of the goggle frame and facing the at least one opening; a front band to which the goggle frame is fixed; a strap, one side of which is fixed to the front band and the other side of which is provided with a rack gear; and a rear band coupled to the other side of the strap on which the rack gear is provided. The rear band may include: a support; a gear which is mounted to the support, rotatable, and engaged with the rack gear; a rotor facing the gear and linked with the gear; and a dial facing the rotor and having at least a portion thereof exposed to the outside of the rear band. The rotor may include: a rotary body facing the dial; and a coupling protrusion positioned between the rotary body and the dial and protruding from the rotary body. The dial may include: a coupler facing the rotary body; and coupling teeth which are positioned between the rotary body and the coupler, protrude from the coupler, and are engaged with the coupling protrusion.