Pince-Nez Bridge Knobs for Secure Nose Placement
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Solution Overview
Problem
Existing reading glasses are difficult to place correctly on the nose without damaging the glass surface and lack ergonomic design for comfort and secure fit, especially for users with varying nose sizes.
Innovation Solution
The reading glasses feature a lens bridge with studs for improved grip and placement, an ergonomic design based on average nose measurements, and a copolyester material with elasticity for a secure yet comfortable fit, ensuring the glasses stay on the nose without causing discomfort or pain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If reading glasses are made small to fit into compact spaces, then portability is improved, but ease of placement on the nose deteriorates
Solution Approach 1:
Studs are introduced as intermediary elements on the lens bridge to mediate between the user's fingers and the small glasses, providing enhanced grip and control during placement despite the reduced size of the glasses
Solution Approach 2:
The lens bridge is equipped with studs at specific locations (two on outer surface, one in center upper part) to create localized grip points that improve handling without increasing the overall size of the glasses
2Adaptability or versatility
If the lens bridge is made elastic to accommodate various nose sizes, then adaptability is improved, but the risk of damaging the glass surface during placement worsens
Solution Approach 1:
The elastic lens bridge is pre-formed with an ellipsoidal cross-section that anticipates the need for deformation during placement, allowing it to flexibly adapt to different nose sizes without requiring forceful manipulation that could damage the glass lenses
Solution Approach 2:
The lens bridge material parameters are selected to provide optimal elasticity, allowing the bridge to deform and conform to various nose shapes while maintaining sufficient structural integrity to support the lenses without causing damage
3Reliability
If the nose pads apply greater pinch force to secure the glasses on wider noses, then stability is improved, but comfort deteriorates due to excessive pressure
Solution Approach 1:
The nose pads are designed with dynamic elasticity that allows them to automatically adjust the pinch force according to the nose width - exerting greater force on wider noses to prevent slipping while applying gentler force on narrower noses to avoid discomfort
Solution Approach 2:
The material parameters of the nose pads are optimized to provide variable pinch force based on the deformation extent, ensuring adequate holding force for different nose sizes without causing pain or leaving marks
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 allows for convenient and secure placement of reading glasses on the nose, accommodating various nose sizes, while maintaining optical clarity and comfort, ensuring the glasses remain in place without abrasion or excessive pressure.
Implementation Method 1
The material of the glasses has to have sufficiently good elasticity and flowability indicators
Data Source
AI summary
Reading glasses, more specifically pince-nez glasses, for short-term, close viewing and reading. For better placement of the reading glasses on the nose, the bridge of the reading glasses is provided with knobs, of which two are located on the outside, making it comfortable to grasp and place the glasses on the nose with two fingers and third knob is located on the upper centre of the bridge. Bridge of the reading glasses is ergonomic. The measurements of the radius of bridge of the reading glasses have been developed ellipsoidal in shape, where radius r1 is 7.0 mm and r2 is 7.5 mm and the angle α of the bridge is 36°.