Helmet Lens Mounting Mechanism for Fine Position and Angle Adjustment
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Solution Overview
Problem
Existing lens unit attachment mechanisms for helmets lack the ability to make fine adjustments in both the angle and position of the lenses to accommodate various face lengths and eye positions, limiting the field of view and comfort for helmet wearers.
Innovation Solution
A lens unit attachment mechanism that includes angle adjustment members, position adjustment members, and retention members, allowing for pivoting and extension/retraction capabilities to adjust the lens unit's position and angle, along with a size adjustment member to fit different face widths, ensuring a secure and comfortable fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens unit is fixed in a predetermined position and angle, then the structure is simple and easy to manufacture, but it cannot adapt to various face lengths and eye positions of helmet wearers
Solution Approach 1:
The patent applies dynamics by transforming the fixed lens unit into an adjustable one. The lens unit can be positioned at multiple locations along the arcuate path and rotated to different angles, allowing adaptation to various face lengths and eye positions while maintaining a relatively simple overall structure through the use of a pivot point and retention mechanism.
Solution Approach 2:
The adjustment mechanism is segmented into distinct functional components: the arcuate adjustment member with multiple positions, the rotation member for angle adjustment, and the retention member for securing. This segmentation allows each component to perform its specific function independently, achieving high adaptability without excessive overall complexity.
2Adaptability or versatility
If the lens unit is adjustable to multiple positions and angles, then it can adapt to various face lengths and eye positions, but the structure becomes complex and difficult to manufacture
Solution Approach 1:
The patent achieves multiple positions and angles through a dynamic adjustment mechanism centered at a pivot point. The arcuate adjustment member provides multiple predetermined positions along an arc, and the rotation member enables angle adjustment, all while maintaining a relatively simple manufacturing process by using a centralized pivot point and straightforward retention mechanisms.
Solution Approach 2:
The adjustment mechanism is designed with multi-functionality: the same pivot point and retention member structure serve both the arcuate position adjustment and the rotation angle adjustment. This universal design approach allows the mechanism to provide comprehensive adjustability without requiring separate complex systems for each degree of freedom, thereby improving ease of manufacture.
3Reliability
If the lens unit is securely retained, then it remains stable during use, but fine adjustments in position and angle become difficult
Solution Approach 1:
The retention mechanism is designed to be dynamic rather than permanently fixed. The retention member can be easily engaged and disengaged, allowing the lens unit to be securely held during use while enabling simple repositioning and re-adjustment when needed. This dynamic retention approach maintains both stability and ease of operation.
Solution Approach 2:
The retention mechanism provides sufficient securing force to hold the lens unit stably during normal use, but is designed to be easily overridden with minimal effort for adjustment purposes. This partial action approach ensures reliable retention during operation while allowing easy re-adjustment when required, balancing stability and operability.
Data Source
Figure 1
Figure 2A
Figure 2B~2C
AI summary
A good fitting sensation of a lens unit is obtained by performing fine adjustment of the position and angle of the lens unit. A lens unit attachment mechanism includes a frame member supporting a pair of lenses, side frame members extending rearward of the lenses from left and right end portions of the frame member, an angle adjustment member coupled to the lens unit and having two rotation pivot points, and a position adjustment retention member retaining the angle adjustment member so as to allow extending and retracting. The lens unit attachment mechanism adjusts the position and angle of the lens unit flexibly.