VR Glasses Stepped Lens Adjustment Mechanism
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Solution Overview
Problem
The existing adjustment method for the distance between the lens barrels of VR glasses is not conducive to daily use, leading to a low sealing effect and increased dust entry, which reduces clarity and user experience.
Innovation Solution
A stepped adjustment mechanism with silicone sealing portions and a transmission mechanism that includes a gear system and spring, allowing precise and stable adjustment of the lens barrels while maintaining a secure seal, preventing dust entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stepless adjustment mechanism is used to change the distance between lens barrels, then the adjustment flexibility is improved, but the sealing effect deteriorates and dust entry increases
Solution Approach 1:
The adjustment mechanism is segmented into discrete stepped positions rather than continuous adjustment. The transmission mechanism includes a gear system with specific number of teeth that divides the adjustment range into distinct steps, preventing continuous movement that compromises sealing while maintaining adequate adjustment flexibility for different interpupillary distances
Solution Approach 2:
The mechanism transitions from a static sealed position to a dynamic adjustment process and back to static sealed positions. During adjustment, the lens barrels move through defined steps, and at each position, the sealing structure returns to a stable sealed state, combining adjustability with sealing reliability
2Adaptability or versatility
If multiple adjustments of lens barrel distance are performed, then the adaptability to different users is improved, but the seal between lens barrels and base deteriorates
Solution Approach 1:
The sealing structure is designed with pre-compression or pre-positioning features that maintain seal integrity before and after adjustment. The silicone sealing portion is positioned and dimensioned to accommodate movement while maintaining contact pressure, cushioning against seal deterioration during repeated adjustments
Solution Approach 2:
The sealing parameters (such as compression force, contact area, or material deformation) are optimized to maintain effective sealing across multiple adjustment cycles. The sealing structure's physical parameters are designed to allow reversible deformation that maintains seal integrity after each adjustment
3Ease of operation
If stepless adjustment mechanism is used, then the ease of operation is improved, but the manufacturing precision requirement increases due to sealing issues
Solution Approach 1:
By segmenting the adjustment into discrete steps, the manufacturing precision requirements are reduced compared to continuous adjustment. Each stepped position corresponds to specific gear tooth engagements, providing inherent positioning that is easier to manufacture precisely than continuous variable positions, while still offering multiple adjustment options
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 provides a more controllable and durable adjustment method for the VR glasses, enhancing user experience by maintaining a clear image and extending the device's lifespan through improved sealing and reduced dust exposure.
Implementation Method 1
the spring is in a compressed state and sleeved on the fixing shaft... the first mating surface and the second mating surface are pressed against each other by the spring
Data Source
AI summary
Disclosed in the present disclosure is a VR glasses which includes: a screen frame and a bottom plate, wherein the screen frame is fixed to the bottom plate, the bottom plate is provided with two light-transmitting holes symmetrically, and an edge of the screen frame has a first side structure perpendicular to the bottom plate; a first lens barrel and a second lens barrel, wherein the first lens barrel and the second lens barrel communicate with the two light-transmitting holes and each of the first lens barrel and the second lens barrel is provided with a lens; and a transmission mechanism, wherein the transmission mechanism is a stepped adjustment mechanism, the transmission mechanism is arranged close to the first side structure of the screen frame, the first lens barrel and the second lens barrel is configured to move toward each other through the transmission mechanism.