Spring-Loaded Pince-Nez Frame for Stable, Low-Pressure Retention
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Solution Overview
Problem
Pince-nez eyeglasses slip off easily with minimal movement, are uncomfortable for prolonged wear, and are unsuitable for physical activities due to pinching force and limited lens size, especially for wider noses.
Innovation Solution
A pince-nez frame design with twisted pad arms and a forward-extending bridge, featuring a spring-activated lever mechanism and interchangeable nose pads, providing secure fit and comfort by distributing pressure and balancing torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stiffer bridge is used to maintain pince-nez on a nose during physical activity, then the frames remain more stable, but the wearer experiences greater soreness and pain on the nose bridge
Solution Approach 1:
The nose bridge structure is divided into multiple segments: a forward-extending bridge portion, pad arms with twisted configurations, and nose pads. This segmentation allows the bridge to provide structural stability while the pad arms and pads distribute pressure away from the nose bridge, resolving the contradiction between frame stability and comfort.
Solution Approach 2:
The pad arms extend forward from the bridge and twist in three-dimensional space to reach the nose pads positioned on the wearer's nose. This dimensional extension allows the retention force to be applied at a different location (on the nose tip/ala) rather than directly on the nose bridge, maintaining stability while reducing bridge soreness.
2Reliability
If the pinching force is increased to prevent frames from slipping off during motion, then the frames remain more secure, but the wearer experiences increased discomfort and pain
Solution Approach 1:
The nose pads act as an intermediary element between the frame structure and the wearer's nose. These pads provide a comfortable interface that distributes the retention force over a larger area, allowing secure frame retention during motion while minimizing discomfort and pain on the wearer's skin.
Solution Approach 2:
The pad arms incorporate twisted, flexible configurations that can adapt to different nose shapes and sizes. This flexibility allows the pad arms to conform to the wearer's anatomy, maintaining secure retention while distributing pressure evenly to reduce discomfort.
3Area of stationary object
If the lenses are made larger to improve vision, then the visual coverage is better, but the frame weight increases requiring a stiffer spring
Solution Approach 1:
The invention extracts the retention function from the bridge-spring system and relocates it to the pad arms with nose pads. This allows the use of lighter, more flexible materials in the bridge while maintaining adequate retention force, thereby supporting larger lens sizes without proportionally increasing the required bridge stiffness.
4Adaptability or versatility
If the pinching force is increased to accommodate wider noses, then the frames can fit more nose types, but the torsion force becomes excessive causing discomfort
Solution Approach 1:
The pad arms are designed with twisted, dynamic configurations that can adapt to different nose widths and shapes. Rather than increasing the pinching force uniformly, the flexible pad arms can extend and conform to various nasal anatomies, providing accommodation for wider noses without generating excessive torsion force that would cause discomfort.
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 design securely maintains eyeglasses in place during various activities, reduces discomfort, and accommodates diverse nose shapes and sizes, enhancing usability and comfort.
Implementation Method 1
pad arms attached to a nose bridge via a spring in each of the pad arms
Implementation Method 2
The spring may be activated via one or more levers. As such, a lever would be activating a torsion spring by pulling the pad arms apart
Implementation Method 3
The pad arms are made in a twisted and substantially flared pattern so as to capture as much of surface area on each side of a nose bridge as possible. Furthermore, a twisted configuration as shown in the figures allows for increased comfort by alleviating pressure on the skin surface of a nose
Data Source
AI summary
The disclosed device is eyeglasses frame that is self-maintained upon a nose using pad arms attached to a nose bridge via a spring in each of the pad arms. The spring may be activated via one or more levers. As such, a lever would be activating a torsion spring by pulling the pad arms apart to allow for a passage of a nose bridge. Once the pad arms have been placed over the desired location along a nose bridge of a wearer, or removed therefrom, the levers are released returning the pad arms to a pinched orientation with respect to the nose bridge.