Spectacles support device
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Solution Overview
Problem
Existing support devices for glasses on bicycles and motorcycles often experience excessive movement, leading to discomfort and potential damage due to rocking phenomena, especially during sports activities on uneven terrain.
Innovation Solution
A support device with a strap featuring a loop and relief abutments on either side of the loop to immobilize the glasses' arms, preventing pivoting and ensuring secure attachment by adjusting to different tube diameters and using elastic materials for improved fit and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple strap with loop is used to hold glasses, then the device complexity is reduced and ease of manufacture is improved, but the glasses stability deteriorates due to excessive movement and swinging
Solution Approach 1:
The strap is designed with differentiated local structures: a proximal appendage with a loop for glass insertion, a distal appendage with opening for locking, and relief features at specific locations. These localized structural variations provide stability functions without requiring complete redesign of the entire strap, thus maintaining overall simplicity while improving glasses stability.
Solution Approach 2:
The relief features (first relief forming a stop, second relief forming a counter-stop) are pre-positioned on the strap to anticipate and prevent excessive glass movement before it occurs. These features create predetermined stopping points that limit the range of motion, thereby preventing swinging and maintaining glasses stability proactively.
2Reliability
If the strap is made elastic to improve fit and friction, then the attachment reliability is improved, but the device complexity increases due to material selection and manufacturing constraints
Solution Approach 1:
The strap utilizes elastic material properties to dynamically adjust its physical parameters (length, tension, friction coefficient) based on the tube diameter and insertion force. This allows the same elastic strap structure to reliably attach to various tube sizes while maintaining sufficient friction and holding force, achieving high attachment reliability without requiring multiple different strap designs.
3Stability of the object's composition
If relief features are added to immobilize glasses, then the glasses stability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The stabilization function is segmented into two independent relief features: a first relief forming a stop and a second relief forming a counter-stop. This segmentation allows each relief to be optimized for its specific function (one limiting movement in one direction, the other in the opposite direction), simplifying the manufacturing precision requirements compared to a single complex positioning feature.
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 effectively limits or prohibits swinging of glasses, reducing visual and physical discomfort and preventing collisions by maintaining the glasses' stability and secure attachment to the handlebars, even on uneven terrain.
Implementation Method 1
using elastic materials for improved fit and friction
Implementation Method 2
using elastic materials for improved fit and friction
Data Source
Figure 1~2
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AI summary
The invention concerns a support device (10) for spectacles, having a first face (12) and a second face (14) opposite the first face, and comprising: - a strap (16), - a proximal appendage (22) of the strap and a distal appendage (32) of the strap (16), the proximal appendage and the distal appendage being connected by a strap body (18), - a loop (24) made in the proximal appendage (22), - at least one aperture (40) of at least one of the strap body (18) and the distal appendage (32) of the strap, allowing an engagement of the proximal appendage (22) of the strap through the strap body (18), respectively of the distal appendage of the strap (32), - a retaining lock (18a, 18b, 28, 28a, 28b, 42) of the proximal appendage (22) through the aperture (40), in a position of use of the support device. According to the invention, the device comprises at least a first relief (50, 60) forming an immobilising stop (52, 82) for the spectacle arm in the vicinity of the loop (24) in this position of use of the support device, the relief protruding on the first face. The invention is applicable to the fastening of a pair of spectacles to the handlebars of a bicycle.