Spectacles Spring Hinge Support for Adjustable Preload
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Solution Overview
Problem
Spring hinges for eyeglasses, particularly those used in plastic frames, face challenges in manufacturing costs and lack of adjustable preload, which hinders their widespread adoption in cost-effective manufacturing methods like injection molding and 3D printing.
Innovation Solution
A hinge component featuring a sheet metal support with a stop and anchoring elements allows for adjustable preload by changing the anchoring position relative to the mounting position, utilizing a sheet metal bent design that is cost-effective to produce and can be adjusted during manufacturing and use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional hinge components are used in plastic frames, then manufacturing costs are reduced, but the spring element's preload cannot be adjusted during use
Solution Approach 1:
The hinge component is divided into separate functional elements: a carrier with anchoring elements, a temple component with a stop, and a spring element. The contact surface on the carrier is separated from the bracket part, allowing independent adjustment of the anchoring position without affecting the mounting position. This segmentation enables preload adjustability while maintaining a relatively simple overall structure.
Solution Approach 2:
The hinge component is designed to be self-adjustable by the user. By applying force to the contact surface, the user can directly change the anchoring position of the carrier relative to the mounting position, thereby adjusting the spring element's preload without requiring external tools or complex adjustment mechanisms. The component serves itself through simple user interaction.
2Adaptability or versatility
If the anchoring position is fixed, then manufacturing is simplified, but the spring element's preload cannot be readjusted during use
Solution Approach 1:
The hinge component transitions from a fixed anchoring position to a dynamic, adjustable anchoring position. The carrier can be moved along the temple component by applying force to the contact surface, allowing the anchoring position to be changed relative to the mounting position. This dynamic capability enables preload readjustment during use while maintaining ease of manufacture through simple geometric features rather than complex mechanisms.
Solution Approach 2:
The invention changes the positional parameter of the anchoring position from fixed to variable. By providing a contact surface that allows the carrier to be displaced along the temple component, the anchoring position can be adjusted to change the preload of the spring element. This parameter change is achieved through simple geometric features (contact surface and stop) rather than complex adjustment mechanisms, maintaining ease of manufacture.
3Ease of operation
If the contact surface is integrated into the bracket part, then the structure is simpler, but the anchoring position cannot be changed independently
Solution Approach 1:
The contact surface is separated from the bracket part and integrated into the carrier instead. This segmentation allows the carrier to move independently along the temple component by applying force to the contact surface, changing the anchoring position without affecting the mounting position of the bracket part. The stop on the bracket part provides a reference point while the carrier's independent movement enables adjustable anchoring.
Solution Approach 2:
The carrier acts as an intermediary between the bracket part and the spring element. It provides a contact surface that can be acted upon to change the anchoring position, while its movement is constrained by the stop on the bracket part. This intermediary structure enables independent adjustment of the anchoring position without requiring changes to the bracket part or mounting position.
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
Enables precise and reproducible adjustment of spring preload, reducing manufacturing costs and allowing for readjustment during use, thus enhancing the functionality and cost-effectiveness of spring hinges in eyeglasses.
Implementation Method 1
a spring element (21), which is received by the support (9) and rests against the first support surface (19) with a first effective end (23)
Data Source
Figure 1~2b
Figure 3~4
Figure 5~6
AI summary
The invention relates to a hinge part (7) for a spring hinge on spectacles, having a support (9), which comprises a first support face (19), wherein a spring element (21) is received by the support (9) and with a first working end (23) bears on the first support face (19), wherein the support (9) comprises anchoring elements (11) for anchoring the support (9) in a spectacles element (1) in a mounting position, and with a bracket part (13), which is arranged in the support (9), is displaceable relative to the support (9), which support also comprises a second support face (25), on which the spring element (21) bears with a second working end (27), wherein the bracket part (13) comprises a stop (15) which is designed to contact the spectacles element (1) in a installation position of the bracket part (13), and wherein the support (9) comprises a pressure face (17) which is exposed by the bracket part (13) and which is arranged in such a manner that the anchoring position can be modified relative to the assembly position by applying a force to the pressure face (17).