Ocular Protection Mask Visor Groove for Secure Close-Fit Mounting
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Solution Overview
Problem
Existing ocular protection masks with frameless visors suffer from complicated and bulky fixing mechanisms, which compromise aesthetic appearance and field of view, and are prone to accidental detachment due to fragility.
Innovation Solution
A robust and compact ocular protection mask design featuring a visor system with a support that includes a retaining surface extending parallel to the visor, forming a radial groove with the frame, and utilizing notches and protuberances for secure attachment, along with an elastic strap for head retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known prior art fixing means are used to attach the visor to the frame, then the visor can be secured to the frame, but the fixing means are bulky and require the visor to be at a great distance from the face, penalizing aesthetic appearance and field of view
Solution Approach 1:
The support is divided into distinct functional surfaces: a front surface for fixing to the visor, a retaining surface for engagement with the frame, and an optional rear surface. This segmentation allows each surface to be optimized for its specific function while maintaining overall compactness.
Solution Approach 2:
The retaining surface extends substantially parallel to the visor in a direction away from the face, creating a radial groove that engages with the frame. This dimensional arrangement allows secure attachment without increasing the distance from the face.
2Reliability
If known prior art fixing means are used to attach the visor to the frame, then the visor can be secured to the frame, but the fixing means are fragile and can easily be damaged, leading to accidental detachment
Solution Approach 1:
The support integrates multiple functions into a single component: it serves as both the mounting structure for the visor and the retention mechanism for the frame. The radial groove formed by the retaining surface and frame edge creates a unified attachment system that is more durable than separate fixing means.
Solution Approach 2:
The radial groove design provides a cushioning effect by allowing the retaining surface to engage with the frame in a way that absorbs impact forces. The groove geometry is designed to prevent direct transmission of impact forces to the visor attachment points.
3Volume of moving object
If the visor is positioned close to the face for aesthetic appearance and wide field of view, then aesthetic appeal and field of view are improved, but sufficient space for bulky fixing means is not available
Solution Approach 1:
The complex fixing mechanism is extracted and replaced with a simple radial groove engagement system. The support structure takes out the need for bulky external fixing means by integrating the retention function directly into the support geometry.
4Device complexity
If a simple and compact fixing structure is used, then manufacturing is easier and the mask is more compact, but the attachment may not be secure enough
Solution Approach 1:
The support can be made from materials with different properties than the visor and frame, allowing it to provide both structural integrity for secure attachment and flexibility for compact design. The material selection enables the simple radial groove structure to achieve high reliability.
Data Source
AI summary
The ocular protection mask (1) has a frame (7) and a visor system (14) fixed to the frame, the visor system including a first visor (2) and a support (13) fixed to the first visor, the first visor covering the front of the frame and the support, which includes a front surface (15) fixed against a rear face (16) of the first visor, and a retaining surface (23) extending substantially parallel to the first visor behind the first visor, the retaining surface and an external edge (3) of the first visor together forming a radial groove (22) cooperating with the frame (7) to retain the visor system on the frame.